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[PATCH openEuler-1.0-LTS] md: fix a warning caused by a race between concurrent md_ioctl()s
by Yang Yingliang 09 Dec '21
by Yang Yingliang 09 Dec '21
09 Dec '21
From: "Dae R. Jeong" <dae.r.jeong(a)kaist.ac.kr>
mainline inclusion
from mainline-v5.11-rc1
commit c731b84b51bf7fe83448bea8f56a6d55006b0615
category: bugfix
bugzilla: 185833
CVE: NA
-----------------------------------------------
Syzkaller reports a warning as belows.
WARNING: CPU: 0 PID: 9647 at drivers/md/md.c:7169
...
Call Trace:
...
RIP: 0010:md_ioctl+0x4017/0x5980 drivers/md/md.c:7169
RSP: 0018:ffff888096027950 EFLAGS: 00010293
RAX: ffff88809322c380 RBX: 0000000000000932 RCX: ffffffff84e266f2
RDX: 0000000000000000 RSI: ffffffff84e299f7 RDI: 0000000000000007
RBP: ffff888096027bc0 R08: ffff88809322c380 R09: ffffed101341a482
R10: ffff888096027940 R11: ffff88809a0d240f R12: 0000000000000932
R13: ffff8880a2c14100 R14: ffff88809a0d2268 R15: ffff88809a0d2408
__blkdev_driver_ioctl block/ioctl.c:304 [inline]
blkdev_ioctl+0xece/0x1c10 block/ioctl.c:606
block_ioctl+0xee/0x130 fs/block_dev.c:1930
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:509 [inline]
do_vfs_ioctl+0xd5f/0x1380 fs/ioctl.c:696
ksys_ioctl+0xab/0xd0 fs/ioctl.c:713
__do_sys_ioctl fs/ioctl.c:720 [inline]
__se_sys_ioctl fs/ioctl.c:718 [inline]
__x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718
do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301
entry_SYSCALL_64_after_hwframe+0x49/0xbe
This is caused by a race between two concurrenct md_ioctl()s closing
the array.
CPU1 (md_ioctl()) CPU2 (md_ioctl())
------ ------
set_bit(MD_CLOSING, &mddev->flags);
did_set_md_closing = true;
WARN_ON_ONCE(test_bit(MD_CLOSING,
&mddev->flags));
if(did_set_md_closing)
clear_bit(MD_CLOSING, &mddev->flags);
Fix the warning by returning immediately if the MD_CLOSING bit is set
in &mddev->flags which indicates that the array is being closed.
Fixes: 065e519e71b2 ("md: MD_CLOSING needs to be cleared after called md_set_readonly or do_md_stop")
Reported-by: syzbot+1e46a0864c1a6e9bd3d8(a)syzkaller.appspotmail.com
Cc: stable(a)vger.kernel.org
Signed-off-by: Dae R. Jeong <dae.r.jeong(a)kaist.ac.kr>
Signed-off-by: Song Liu <songliubraving(a)fb.com>
Signed-off-by: Ye Bin <yebin10(a)huawei.com>
Reviewed-by: Jason Yan <yanaijie(a)huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com>
---
drivers/md/md.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 8a2656cf7127d..409ec5ffd28d3 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -7306,8 +7306,11 @@ static int md_ioctl(struct block_device *bdev, fmode_t mode,
err = -EBUSY;
goto out;
}
- WARN_ON_ONCE(test_bit(MD_CLOSING, &mddev->flags));
- set_bit(MD_CLOSING, &mddev->flags);
+ if (test_and_set_bit(MD_CLOSING, &mddev->flags)) {
+ mutex_unlock(&mddev->open_mutex);
+ err = -EBUSY;
+ goto out;
+ }
did_set_md_closing = true;
mutex_unlock(&mddev->open_mutex);
sync_blockdev(bdev);
--
2.25.1
1
0
09 Dec '21
From: Yonglong Liu <liuyonglong(a)huawei.com>
driver inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I4LD5U
CVE: NA
----------------------------
When multiple users access debugfs at the same time, the process
of alloc and release memory becomes disordered, causing the
kernel crash like this:
[763845.759089] PC is at kfree+0x19c/0x1a0
[763845.759100] LR is at kvfree+0x3c/0x58
[763845.759103] pc : [<ffff00000828878c>] lr : [<ffff00000823432c>] pstate: 60400009
[763845.759105] sp : ffff00003744fc90
[763845.759108] x29: ffff00003744fc90 x28: ffff8027dc87b800
[763845.759115] x27: ffff0000088a1000 x26: ffff000002970f48
[763845.759121] x25: ffff802502600000 x24: 00000000000000af
[763845.759127] x23: 0000000000010000 x22: 0000000013dc0000
[763845.759133] x21: ffff00000823432c x20: ffff802502600000
[763845.759139] x19: ffff802502600000 x18: 0000ffffdaa06b10
[763845.759145] x17: 00000000004201c8 x16: ffff0000082b2b10
[763845.759151] x15: 000000000003013f x14: 0000ffffa462ffe0
[763845.759157] x13: ffffffffffffffff x12: 0433526ae61f3300
[763845.759163] x11: ffff000009694b30 x10: 0000000000000001
[763845.759169] x9 : 000000000007b224 x8 : ffff000009719edc
[763845.759175] x7 : ffff7fe009409800 x6 : 00000045757af8cf
[763845.759181] x5 : ffff8027fced69f0 x4 : 0000000000000000
[763845.759187] x3 : 0000000000000000 x2 : 0433526ae61f3300
[763845.759192] x1 : 0000000000000000 x0 : dead000000000100
[763845.759200] Process cat (pid: 57988, stack limit = 0xffff000037440000)
[763845.759203] Call trace:
[763845.759207] Exception stack(0xffff00003744fb50 to 0xffff00003744fc90)
[763845.759211] fb40: dead000000000100 0000000000000000
[768745.759215] fb60: 0433526ae61f3300 0000000000000000 0000000000000000 ffff8027fced69f0
[763845.759219] fb80: 00000045757af8cf ffff7fe009409800 ffff000009719edc 000000000007b224
[763845.759222] fba0: 0000000000000001 ffff000009694b30 0433526ae61f3300 ffffffffffffffff
[763845.759226] fbc0: 0000ffffa462ffe0 000000000003013f ffff0000082b2b10 00000000004201c8
[763845.759231] fbe0: 0000ffffdaa06b10 ffff802502600000 ffff802502600000 ffff00000823432c
[763845.759235] fc00: 0000000013dc0000 0000000000010000 00000000000000af ffff802502600000
[763845.759238] fc20: ffff000002970f48 ffff0000088a1000 ffff8027dc87b800 ffff00003744fc90
[763845.759243] fc40: ffff00000823432c ffff00003744fc90 ffff00000828878c 0000000060400009
[763845.759247] fc60: ffff00003744feb0 0000000013dc0000 0000ffffffffffff 0000000000000023
[763845.759250] fc80: ffff00003744fc90 ffff00000828878c
[763845.759259] [<ffff00000828878c>] kfree+0x19c/0x1a0
[763845.759263] [<ffff00000823432c>] kvfree+0x3c/0x58
[763845.759306] [<ffff00000295ab94>] hns3_dbg_read+0x94/0x240 [hns3]
[763845.759318] [<ffff000008359550>] full_proxy_read+0x60/0x90
[763845.759324] [<ffff0000082b22a4>] __vfs_read+0x58/0x178
[763845.759327] [<ffff0000082b2454>] vfs_read+0x90/0x14c
[763845.759332] [<ffff0000082b2b70>] SyS_read+0x60/0xc0
This patch adds a mutex lock to fix the race condition, and need
to call hns3_dbg_read_cmd() function when buffer is NULL to
avoid reading empty data.
Fixes: c91910efc03a ("net: hns3: refactor the debugfs process")
Signed-off-by: Yonglong Liu <liuyonglong(a)huawei.com>
Reviewed-by: li yongxin <liyongxin1(a)huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com>
---
drivers/net/ethernet/hisilicon/hns3/hnae3.h | 1 +
.../ethernet/hisilicon/hns3/hns3_debugfs.c | 19 +++++++++++++------
2 files changed, 14 insertions(+), 6 deletions(-)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hnae3.h b/drivers/net/ethernet/hisilicon/hns3/hnae3.h
index c9ac1e7cf4492..048de5b367c19 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hnae3.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hnae3.h
@@ -764,6 +764,7 @@ struct hnae3_handle {
u8 netdev_flags;
struct dentry *hnae3_dbgfs;
+ struct mutex dbgfs_lock;
/* Network interface message level enabled bits */
u32 msg_enable;
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c b/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
index 7f3b7084e382f..c68e5f3d0ba52 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
@@ -807,6 +807,7 @@ static ssize_t hns3_dbg_read(struct file *filp, char __user *buffer,
if (ret)
return ret;
+ mutex_lock(&handle->dbgfs_lock);
save_buf = &hns3_dbg_cmd[index].buf;
if (!test_bit(HNS3_NIC_STATE_INITED, &priv->state) ||
@@ -819,15 +820,15 @@ static ssize_t hns3_dbg_read(struct file *filp, char __user *buffer,
read_buf = *save_buf;
} else {
read_buf = kvzalloc(hns3_dbg_cmd[index].buf_len, GFP_KERNEL);
- if (!read_buf)
- return -ENOMEM;
+ if (!read_buf) {
+ ret = -ENOMEM;
+ goto out;
+ }
/* save the buffer addr until the last read operation */
*save_buf = read_buf;
- }
- /* get data ready for the first time to read */
- if (!*ppos) {
+ /* get data ready for the first time to read */
ret = hns3_dbg_read_cmd(dbg_data, hns3_dbg_cmd[index].cmd,
read_buf, hns3_dbg_cmd[index].buf_len);
if (ret)
@@ -836,8 +837,10 @@ static ssize_t hns3_dbg_read(struct file *filp, char __user *buffer,
size = simple_read_from_buffer(buffer, count, ppos, read_buf,
strlen(read_buf));
- if (size > 0)
+ if (size > 0) {
+ mutex_unlock(&handle->dbgfs_lock);
return size;
+ }
out:
/* free the buffer for the last read operation */
@@ -846,6 +849,7 @@ static ssize_t hns3_dbg_read(struct file *filp, char __user *buffer,
*save_buf = NULL;
}
+ mutex_unlock(&handle->dbgfs_lock);
return ret;
}
@@ -916,6 +920,7 @@ int hns3_dbg_init(struct hnae3_handle *handle)
debugfs_create_dir(hns3_dbg_dentry[i].name,
handle->hnae3_dbgfs);
+ mutex_init(&handle->dbgfs_lock);
for (i = 0; i < ARRAY_SIZE(hns3_dbg_cmd); i++) {
if (!hns3_dbg_cmd[i].init) {
dev_err(&handle->pdev->dev,
@@ -936,6 +941,7 @@ int hns3_dbg_init(struct hnae3_handle *handle)
return 0;
out:
+ mutex_destroy(&handle->dbgfs_lock);
debugfs_remove_recursive(handle->hnae3_dbgfs);
handle->hnae3_dbgfs = NULL;
return ret;
@@ -951,6 +957,7 @@ void hns3_dbg_uninit(struct hnae3_handle *handle)
hns3_dbg_cmd[i].buf = NULL;
}
+ mutex_destroy(&handle->dbgfs_lock);
debugfs_remove_recursive(handle->hnae3_dbgfs);
handle->hnae3_dbgfs = NULL;
}
--
2.25.1
1
1
09 Dec '21
hulk inclusion
category: bugfix
bugzilla: NA
CVE: NA
---------------------------
If config DEBUG_SPINLOCK or DEBUG_LOCK_ALLOC is enabled,
don't need fix the kabi broken.
It's introduced by 93c5c1d15abcd ("af_unix: fix races in sk_peer_pid and sk_peer_cred accesses").
Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com>
Reviewed-by: Cheng Jian <cj.chengjian(a)huawei.com>
Reviewed-by: Yue Haibing <yuehaibing(a)huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com>
---
include/net/sock.h | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/include/net/sock.h b/include/net/sock.h
index b90b92882b3b8..803464e66e02c 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -472,7 +472,9 @@ struct sock {
u32 sk_ack_backlog;
u32 sk_max_ack_backlog;
kuid_t sk_uid;
+#if defined(CONFIG_DEBUG_SPINLOCK) || defined(CONFIG_DEBUG_LOCK_ALLOC)
spinlock_t sk_peer_lock;
+#endif
struct pid *sk_peer_pid;
const struct cred *sk_peer_cred;
@@ -513,7 +515,18 @@ struct sock {
struct sock_reuseport __rcu *sk_reuseport_cb;
struct rcu_head sk_rcu;
+#if !defined(CONFIG_DEBUG_SPINLOCK) && !defined(CONFIG_DEBUG_LOCK_ALLOC)
+#ifndef __GENKSYMS__
+ union {
+ spinlock_t sk_peer_lock;
+ unsigned long kabi_reserve1;
+ };
+#else
KABI_RESERVE(1)
+#endif
+#else
+ KABI_RESERVE(1)
+#endif
KABI_RESERVE(2)
KABI_RESERVE(3)
KABI_RESERVE(4)
--
2.25.1
1
0
[PATCH openEuler-1.0-LTS 01/31] cifs: fix incorrect check for null pointer in header_assemble
by Yang Yingliang 08 Dec '21
by Yang Yingliang 08 Dec '21
08 Dec '21
From: Steve French <stfrench(a)microsoft.com>
stable inclusion
from linux-4.19.209
commit 43d2e0fbc67f8bcfb069130f4028a04887ae76b6
--------------------------------
commit 9ed38fd4a15417cac83967360cf20b853bfab9b6 upstream.
Although very unlikely that the tlink pointer would be null in this case,
get_next_mid function can in theory return null (but not an error)
so need to check for null (not for IS_ERR, which can not be returned
here).
Address warning:
fs/smbfs_client/connect.c:2392 cifs_match_super()
warn: 'tlink' isn't an ERR_PTR
Pointed out by Dan Carpenter via smatch code analysis tool
CC: stable(a)vger.kernel.org
Reported-by: Dan Carpenter <dan.carpenter(a)oracle.com>
Acked-by: Ronnie Sahlberg <lsahlber(a)redhat.com>
Signed-off-by: Steve French <stfrench(a)microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org>
Acked-by: Jason Yan <yanaijie(a)huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com>
---
fs/cifs/connect.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 907be252c5d47..36104dd8eb4dd 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -3373,9 +3373,10 @@ cifs_match_super(struct super_block *sb, void *data)
spin_lock(&cifs_tcp_ses_lock);
cifs_sb = CIFS_SB(sb);
tlink = cifs_get_tlink(cifs_sb_master_tlink(cifs_sb));
- if (IS_ERR(tlink)) {
+ if (tlink == NULL) {
+ /* can not match superblock if tlink were ever null */
spin_unlock(&cifs_tcp_ses_lock);
- return rc;
+ return 0;
}
tcon = tlink_tcon(tlink);
ses = tcon->ses;
--
2.25.1
1
30
[PATCH OLK-5.10 107/107] fs/ntfs3: Add ntfs3 module in openeuler_defconfig
by Yin Xiujiang 08 Dec '21
by Yin Xiujiang 08 Dec '21
08 Dec '21
kylin inclusion
category: feature
bugzilla:
https://gitee.com/openeuler/kernel/issues/I4G67J?from=project-issue
CVE: NA
-------------------------------------------------
This adds ntfs3 module in openeuler_defconfig
Signed-off-by: Yin Xiujiang <yinxiujiang(a)kylinos.cn>
---
arch/arm64/configs/openeuler_defconfig | 4 ++++
arch/x86/configs/openeuler_defconfig | 4 ++++
2 files changed, 8 insertions(+)
diff --git a/arch/arm64/configs/openeuler_defconfig b/arch/arm64/configs/openeuler_defconfig
index 76d6a118330d..b1e8524eb5e6 100644
--- a/arch/arm64/configs/openeuler_defconfig
+++ b/arch/arm64/configs/openeuler_defconfig
@@ -6163,6 +6163,10 @@ CONFIG_EXFAT_DEFAULT_IOCHARSET="utf8"
CONFIG_NTFS_FS=m
# CONFIG_NTFS_DEBUG is not set
# CONFIG_NTFS_RW is not set
+CONFIG_NTFS3_FS=m
+CONFIG_NTFS3_64BIT_CLUSTER=y
+CONFIG_NTFS3_LZX_XPRESS=y
+CONFIG_NTFS3_FS_POSIX_ACL=y
# end of DOS/FAT/EXFAT/NT Filesystems
#
diff --git a/arch/x86/configs/openeuler_defconfig b/arch/x86/configs/openeuler_defconfig
index b25d908dc7a1..83e143d139fa 100644
--- a/arch/x86/configs/openeuler_defconfig
+++ b/arch/x86/configs/openeuler_defconfig
@@ -7515,6 +7515,10 @@ CONFIG_EXFAT_DEFAULT_IOCHARSET="utf8"
CONFIG_NTFS_FS=m
# CONFIG_NTFS_DEBUG is not set
# CONFIG_NTFS_RW is not set
+CONFIG_NTFS3_FS=m
+CONFIG_NTFS3_64BIT_CLUSTER=y
+CONFIG_NTFS3_LZX_XPRESS=y
+CONFIG_NTFS3_FS_POSIX_ACL=y
# end of DOS/FAT/EXFAT/NT Filesystems
#
--
2.30.0
1
0
08 Dec '21
From: Christophe JAILLET <christophe.jaillet(a)wanadoo.fr>
mainline inclusion
from mainline-v5.15
commit 808bc0a82bcd2cbe32a139613325b1a3e03f35f1
category: feature
bugzilla:
https://gitee.com/openeuler/kernel/issues/I4G67J?from=project-issue
CVE: NA
----------------------------------------------------------------------
There is already a 'u8 mask' defined at the top of the function.
There is no need to define a new one here.
Remove the useless and shadowing new 'mask' variable.
Signed-off-by: Christophe JAILLET <christophe.jaillet(a)wanadoo.fr>
Reviewed-by: Kari Argillander <kari.argillander(a)gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
Signed-off-by: Yin Xiujiang <yinxiujiang(a)kylinos.cn>
---
fs/ntfs3/bitfunc.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/fs/ntfs3/bitfunc.c b/fs/ntfs3/bitfunc.c
index bf10e2da5c6e..50d838093790 100644
--- a/fs/ntfs3/bitfunc.c
+++ b/fs/ntfs3/bitfunc.c
@@ -119,8 +119,7 @@ bool are_bits_set(const ulong *lmap, size_t bit, size_t nbits)
pos = nbits & 7;
if (pos) {
- u8 mask = fill_mask[pos];
-
+ mask = fill_mask[pos];
if ((*map & mask) != mask)
return false;
}
--
2.30.0
1
0
[PATCH OLK-5.10 080/107] fs/ntfs3: Remove a useless test in 'indx_find()'
by Yin Xiujiang 08 Dec '21
by Yin Xiujiang 08 Dec '21
08 Dec '21
From: Christophe JAILLET <christophe.jaillet(a)wanadoo.fr>
mainline inclusion
from mainline-v5.15
commit d2846bf33c1423ff872c7a7c2afde292ad502c04
category: feature
bugzilla:
https://gitee.com/openeuler/kernel/issues/I4G67J?from=project-issue
CVE: NA
----------------------------------------------------------------------
'fnd' has been dereferenced several time before, so testing it here is
pointless.
Moreover, all callers of 'indx_find()' already have some error handling
code that makes sure that no NULL 'fnd' is passed.
So, remove the useless test.
Signed-off-by: Christophe JAILLET <christophe.jaillet(a)wanadoo.fr>
Reviewed-by: Kari Argillander <kari.argillander(a)gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
Signed-off-by: Yin Xiujiang <yinxiujiang(a)kylinos.cn>
---
fs/ntfs3/index.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/fs/ntfs3/index.c b/fs/ntfs3/index.c
index 4f71a91f07d9..6f81e3a49abf 100644
--- a/fs/ntfs3/index.c
+++ b/fs/ntfs3/index.c
@@ -1072,9 +1072,7 @@ int indx_find(struct ntfs_index *indx, struct ntfs_inode *ni,
if (!e)
return -EINVAL;
- if (fnd)
- fnd->root_de = e;
-
+ fnd->root_de = e;
err = 0;
for (;;) {
--
2.30.0
1
0
08 Dec '21
From: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
mainline inclusion
from mainline-v5.15
commit 56eaeb10e2619081cc383febf6740a4c3e806777
category: feature
bugzilla:
https://gitee.com/openeuler/kernel/issues/I4G67J?from=project-issue
CVE: NA
----------------------------------------------------------------------
xfstest generic/041 works with 3003 hardlinks.
Because of this we raise hardlinks limit to 4000.
There are no drawbacks or regressions.
Theoretically we can raise all the way up to ffff,
but there is no practical use for this.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
Signed-off-by: Yin Xiujiang <yinxiujiang(a)kylinos.cn>
---
fs/ntfs3/ntfs.h | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/fs/ntfs3/ntfs.h b/fs/ntfs3/ntfs.h
index 303a162c3158..9cc396b117bf 100644
--- a/fs/ntfs3/ntfs.h
+++ b/fs/ntfs3/ntfs.h
@@ -26,9 +26,11 @@
#define NTFS_NAME_LEN 255
-/* ntfs.sys used 500 maximum links on-disk struct allows up to 0xffff. */
-#define NTFS_LINK_MAX 0x400
-//#define NTFS_LINK_MAX 0xffff
+/*
+ * ntfs.sys used 500 maximum links on-disk struct allows up to 0xffff.
+ * xfstest generic/041 creates 3003 hardlinks.
+ */
+#define NTFS_LINK_MAX 4000
/*
* Activate to use 64 bit clusters instead of 32 bits in ntfs.sys.
--
2.30.0
1
0
08 Dec '21
From: Colin Ian King <colin.king(a)canonical.com>
mainline inclusion
from mainline-v5.15
commit 880301bb313295a65523e79bc5666f5cf49eb3ed
category: feature
bugzilla:
https://gitee.com/openeuler/kernel/issues/I4G67J?from=project-issue
CVE: NA
----------------------------------------------------------------------
Currently a failed allocation on sbi->upcase will cause an exit via
the label free_sbi causing a memory leak on object opts. Fix this by
re-ordering the exit paths free_opts and free_sbi so that kfree's occur
in the reverse allocation order.
Addresses-Coverity: ("Resource leak")
Fixes: 27fac77707a1 ("fs/ntfs3: Init spi more in init_fs_context than fill_super")
Signed-off-by: Colin Ian King <colin.king(a)canonical.com>
Reviewed-by: Kari Argillander <kari.argillander(a)gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
Signed-off-by: Yin Xiujiang <yinxiujiang(a)kylinos.cn>
---
fs/ntfs3/super.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/ntfs3/super.c b/fs/ntfs3/super.c
index cefb9ddaf4db..6a535b144ff9 100644
--- a/fs/ntfs3/super.c
+++ b/fs/ntfs3/super.c
@@ -1393,10 +1393,10 @@ static int ntfs_init_fs_context(struct fs_context *fc)
fc->ops = &ntfs_context_ops;
return 0;
-free_opts:
- kfree(opts);
free_sbi:
kfree(sbi);
+free_opts:
+ kfree(opts);
return -ENOMEM;
}
--
2.30.0
1
0
[PATCH OLK-5.10 048/107] fs/ntfs3: Add missing header and guards to lib/ headers
by Yin Xiujiang 08 Dec '21
by Yin Xiujiang 08 Dec '21
08 Dec '21
From: Kari Argillander <kari.argillander(a)gmail.com>
mainline inclusion
from mainline-v5.15
commit b6ba81034b1b74cf426abcece4becda2611504a4
category: feature
bugzilla:
https://gitee.com/openeuler/kernel/issues/I4G67J?from=project-issue
CVE: NA
----------------------------------------------------------------------
size_t needs header. Add missing header guards so that compiler will
only include these ones.
Signed-off-by: Kari Argillander <kari.argillander(a)gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
Signed-off-by: Yin Xiujiang <yinxiujiang(a)kylinos.cn>
---
fs/ntfs3/lib/decompress_common.h | 5 +++++
fs/ntfs3/lib/lib.h | 6 ++++++
2 files changed, 11 insertions(+)
diff --git a/fs/ntfs3/lib/decompress_common.h b/fs/ntfs3/lib/decompress_common.h
index 2d70ae42f1b5..dd7ced000d0e 100644
--- a/fs/ntfs3/lib/decompress_common.h
+++ b/fs/ntfs3/lib/decompress_common.h
@@ -5,6 +5,9 @@
* Copyright (C) 2015 Eric Biggers
*/
+#ifndef _LINUX_NTFS3_LIB_DECOMPRESS_COMMON_H
+#define _LINUX_NTFS3_LIB_DECOMPRESS_COMMON_H
+
#include <linux/string.h>
#include <linux/compiler.h>
#include <linux/types.h>
@@ -336,3 +339,5 @@ static forceinline u8 *lz_copy(u8 *dst, u32 length, u32 offset, const u8 *bufend
return dst;
}
+
+#endif /* _LINUX_NTFS3_LIB_DECOMPRESS_COMMON_H */
diff --git a/fs/ntfs3/lib/lib.h b/fs/ntfs3/lib/lib.h
index f508fbad2e71..90309a5ae59c 100644
--- a/fs/ntfs3/lib/lib.h
+++ b/fs/ntfs3/lib/lib.h
@@ -7,6 +7,10 @@
* - linux kernel code style
*/
+#ifndef _LINUX_NTFS3_LIB_LIB_H
+#define _LINUX_NTFS3_LIB_LIB_H
+
+#include <linux/types.h>
/* globals from xpress_decompress.c */
struct xpress_decompressor *xpress_allocate_decompressor(void);
@@ -24,3 +28,5 @@ int lzx_decompress(struct lzx_decompressor *__restrict d,
const void *__restrict compressed_data,
size_t compressed_size, void *__restrict uncompressed_data,
size_t uncompressed_size);
+
+#endif /* _LINUX_NTFS3_LIB_LIB_H */
--
2.30.0
1
0
[PATCH OLK-5.10 047/107] fs/ntfs3: Add missing headers and forward declarations to ntfs_fs.h
by Yin Xiujiang 08 Dec '21
by Yin Xiujiang 08 Dec '21
08 Dec '21
From: Kari Argillander <kari.argillander(a)gmail.com>
mainline inclusion
from mainline-v5.15
commit f239b3a95dd4f7daba26ea17f339a5b19a7d40a1
category: feature
bugzilla:
https://gitee.com/openeuler/kernel/issues/I4G67J?from=project-issue
CVE: NA
----------------------------------------------------------------------
We do not have headers at all in this file. We should have them so that
not every .c file needs to include all of the stuff which this file need
for building. This way we can remove some headers from other files and
get better picture what is needed. This can save some compilation time.
And this can help if we sometimes want to separate this one big header.
Also use forward declarations for structs and enums when it not included
straight with include and it is used in function declarations input.
This will prevent possible compiler warning:
xxx declared inside parameter list will not be visible
outside of this definition or declaration
Here is list which I made when parsing this. There is not necessarily
all example from this header file, but this just proofs we need it.
<linux/blkdev.h> SECTOR_SHIFT
<linux/buffer_head.h> sb_bread(), put_bh
<linux/cleancache.h> put_page()
<linux/fs.h> struct inode (Just struct ntfs_inode need it)
<linux/highmem.h> kunmap(), kmap()
<linux/kernel.h> cpu_to_leXX() ALIGN
<linux/mm.h> kvfree()
<linux/mutex.h> struct mutex, mutex_(un/try)lock()
<linux/page-flags.h> PageError()
<linux/pagemap.h> read_mapping_page()
<linux/rbtree.h> struct rb_root
<linux/rwsem.h> struct rw_semaphore
<linux/slab.h> krfree(), kzalloc()
<linux/string.h> memset()
<linux/time64.h> struct timespec64
<linux/types.h> uXX, __leXX
<linux/uidgid.h> kuid_t, kgid_t
<asm/div64.h> do_div()
<asm/page.h> PAGE_SIZE
"debug.h" ntfs_err() (Just one entry. Maybe we can drop this)
"ntfs.h" Do you even ask?
Signed-off-by: Kari Argillander <kari.argillander(a)gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
Signed-off-by: Yin Xiujiang <yinxiujiang(a)kylinos.cn>
---
fs/ntfs3/ntfs_fs.h | 31 +++++++++++++++++++++++++++++++
1 file changed, 31 insertions(+)
diff --git a/fs/ntfs3/ntfs_fs.h b/fs/ntfs3/ntfs_fs.h
index 372cda697dd4..dae6dd4ac619 100644
--- a/fs/ntfs3/ntfs_fs.h
+++ b/fs/ntfs3/ntfs_fs.h
@@ -9,6 +9,37 @@
#ifndef _LINUX_NTFS3_NTFS_FS_H
#define _LINUX_NTFS3_NTFS_FS_H
+#include <linux/blkdev.h>
+#include <linux/buffer_head.h>
+#include <linux/cleancache.h>
+#include <linux/fs.h>
+#include <linux/highmem.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/mutex.h>
+#include <linux/page-flags.h>
+#include <linux/pagemap.h>
+#include <linux/rbtree.h>
+#include <linux/rwsem.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/time64.h>
+#include <linux/types.h>
+#include <linux/uidgid.h>
+#include <asm/div64.h>
+#include <asm/page.h>
+
+#include "debug.h"
+#include "ntfs.h"
+
+struct dentry;
+struct fiemap_extent_info;
+struct user_namespace;
+struct page;
+struct writeback_control;
+enum utf16_endian;
+
+
#define MINUS_ONE_T ((size_t)(-1))
/* Biggest MFT / smallest cluster */
#define MAXIMUM_BYTES_PER_MFT 4096
--
2.30.0
1
0
08 Dec '21
From: Kari Argillander <kari.argillander(a)gmail.com>
mainline inclusion
from mainline-v5.15
commit 4dfe83320e1e9665b986840b426742ea764e08d7
category: feature
bugzilla:
https://gitee.com/openeuler/kernel/issues/I4G67J?from=project-issue
CVE: NA
----------------------------------------------------------------------
We do not have header files at all in this file. Add following headers
and there is also explanation which for it was added. Note that
explanation might not be complete, but it just proofs it is needed.
<linux/blkdev.h> // SECTOR_SHIFT
<linux/build_bug.h> // static_assert()
<linux/kernel.h> // cpu_to_le64, cpu_to_le32, ALIGN
<linux/stddef.h> // offsetof()
<linux/string.h> // memcmp()
<linux/types.h> //__le32, __le16
"debug.h" // PtrOffset(), Add2Ptr()
Signed-off-by: Kari Argillander <kari.argillander(a)gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
Signed-off-by: Yin Xiujiang <yinxiujiang(a)kylinos.cn>
---
fs/ntfs3/ntfs.h | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/fs/ntfs3/ntfs.h b/fs/ntfs3/ntfs.h
index 6bb3e595263b..695b684bce20 100644
--- a/fs/ntfs3/ntfs.h
+++ b/fs/ntfs3/ntfs.h
@@ -10,6 +10,15 @@
#ifndef _LINUX_NTFS3_NTFS_H
#define _LINUX_NTFS3_NTFS_H
+#include <linux/blkdev.h>
+#include <linux/build_bug.h>
+#include <linux/kernel.h>
+#include <linux/stddef.h>
+#include <linux/string.h>
+#include <linux/types.h>
+
+#include "debug.h"
+
/* TODO: Check 4K MFT record and 512 bytes cluster. */
/* Activate this define to use binary search in indexes. */
--
2.30.0
1
0
[PATCH OLK-5.10 044/107] fs/ntfs3: Remove redundant initialization of variable err
by Yin Xiujiang 08 Dec '21
by Yin Xiujiang 08 Dec '21
08 Dec '21
From: Colin Ian King <colin.king(a)canonical.com>
mainline inclusion
from mainline-v5.15
commit 0327c6d01a97a3242cf10717819994aa6e095a1d
category: feature
bugzilla:
https://gitee.com/openeuler/kernel/issues/I4G67J?from=project-issue
CVE: NA
----------------------------------------------------------------------
The variable err is being initialized with a value that is never read, it
is being updated later on. The assignment is redundant and can be removed.
Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king(a)canonical.com>
Reviewed-by: Kari Argillander <kari.argillander(a)gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
Signed-off-by: Yin Xiujiang <yinxiujiang(a)kylinos.cn>
---
fs/ntfs3/index.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/ntfs3/index.c b/fs/ntfs3/index.c
index 0daca9adc54c..b1175542d854 100644
--- a/fs/ntfs3/index.c
+++ b/fs/ntfs3/index.c
@@ -1401,7 +1401,7 @@ int indx_find_raw(struct ntfs_index *indx, struct ntfs_inode *ni,
static int indx_create_allocate(struct ntfs_index *indx, struct ntfs_inode *ni,
CLST *vbn)
{
- int err = -ENOMEM;
+ int err;
struct ntfs_sb_info *sbi = ni->mi.sbi;
struct ATTRIB *bitmap;
struct ATTRIB *alloc;
--
2.30.0
1
0
[PATCH OLK-5.10 042/107] fs/ntfs3: Rename mount option no_acs_rules > (no)acsrules
by Yin Xiujiang 08 Dec '21
by Yin Xiujiang 08 Dec '21
08 Dec '21
From: Kari Argillander <kari.argillander(a)gmail.com>
mainline inclusion
from mainline-v5.15
commit 28a941ffc1404b66d67228cbe8392bbadb94af0d
category: feature
bugzilla:
https://gitee.com/openeuler/kernel/issues/I4G67J?from=project-issue
CVE: NA
----------------------------------------------------------------------
Rename mount option no_acs_rules to (no)acsrules. This allow us to use
possibility to mount with options noaclrules or aclrules.
Acked-by: Christian Brauner <christian.brauner(a)ubuntu.com>
Reviewed-by: Christoph Hellwig <hch(a)lst.de>
Signed-off-by: Kari Argillander <kari.argillander(a)gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
Signed-off-by: Yin Xiujiang <yinxiujiang(a)kylinos.cn>
---
Documentation/filesystems/ntfs3.rst | 2 +-
fs/ntfs3/file.c | 2 +-
fs/ntfs3/ntfs_fs.h | 2 +-
fs/ntfs3/super.c | 12 ++++++------
fs/ntfs3/xattr.c | 2 +-
5 files changed, 10 insertions(+), 10 deletions(-)
diff --git a/Documentation/filesystems/ntfs3.rst b/Documentation/filesystems/ntfs3.rst
index ded706474825..7b6afe452197 100644
--- a/Documentation/filesystems/ntfs3.rst
+++ b/Documentation/filesystems/ntfs3.rst
@@ -73,7 +73,7 @@ prealloc Preallocate space for files excessively when file size is
increasing on writes. Decreases fragmentation in case of
parallel write operations to different files.
-no_acs_rules "No access rules" mount option sets access rights for
+noacsrules "No access rules" mount option sets access rights for
files/folders to 777 and owner/group to root. This mount
option absorbs all other permissions:
- permissions change for files/folders will be reported
diff --git a/fs/ntfs3/file.c b/fs/ntfs3/file.c
index fef57141b161..0743d806c567 100644
--- a/fs/ntfs3/file.c
+++ b/fs/ntfs3/file.c
@@ -737,7 +737,7 @@ int ntfs3_setattr(struct user_namespace *mnt_userns, struct dentry *dentry,
umode_t mode = inode->i_mode;
int err;
- if (sbi->options->no_acs_rules) {
+ if (sbi->options->noacsrules) {
/* "No access rules" - Force any changes of time etc. */
attr->ia_valid |= ATTR_FORCE;
/* and disable for editing some attributes. */
diff --git a/fs/ntfs3/ntfs_fs.h b/fs/ntfs3/ntfs_fs.h
index aa18f12b7096..15bab48bc1ad 100644
--- a/fs/ntfs3/ntfs_fs.h
+++ b/fs/ntfs3/ntfs_fs.h
@@ -70,7 +70,7 @@ struct ntfs_mount_options {
showmeta : 1, /* Show meta files. */
nohidden : 1, /* Do not show hidden files. */
force : 1, /* Rw mount dirty volume. */
- no_acs_rules : 1, /*Exclude acs rules. */
+ noacsrules : 1, /*Exclude acs rules. */
prealloc : 1 /* Preallocate space when file is growing. */
;
};
diff --git a/fs/ntfs3/super.c b/fs/ntfs3/super.c
index 503e2e23f711..0690e7e4f00d 100644
--- a/fs/ntfs3/super.c
+++ b/fs/ntfs3/super.c
@@ -228,7 +228,7 @@ enum Opt {
Opt_acl,
Opt_iocharset,
Opt_prealloc,
- Opt_no_acs_rules,
+ Opt_noacsrules,
Opt_err,
};
@@ -246,7 +246,7 @@ static const struct fs_parameter_spec ntfs_fs_parameters[] = {
fsparam_flag_no("acl", Opt_acl),
fsparam_flag_no("showmeta", Opt_showmeta),
fsparam_flag_no("prealloc", Opt_prealloc),
- fsparam_flag("no_acs_rules", Opt_no_acs_rules),
+ fsparam_flag_no("acsrules", Opt_noacsrules),
fsparam_string("iocharset", Opt_iocharset),
__fsparam(fs_param_is_string,
@@ -358,8 +358,8 @@ static int ntfs_fs_parse_param(struct fs_context *fc,
case Opt_prealloc:
opts->prealloc = result.negated ? 0 : 1;
break;
- case Opt_no_acs_rules:
- opts->no_acs_rules = 1;
+ case Opt_noacsrules:
+ opts->noacsrules = result.negated ? 1 : 0;
break;
default:
/* Should not be here unless we forget add case. */
@@ -547,8 +547,8 @@ static int ntfs_show_options(struct seq_file *m, struct dentry *root)
seq_puts(m, ",nohidden");
if (opts->force)
seq_puts(m, ",force");
- if (opts->no_acs_rules)
- seq_puts(m, ",no_acs_rules");
+ if (opts->noacsrules)
+ seq_puts(m, ",noacsrules");
if (opts->prealloc)
seq_puts(m, ",prealloc");
if (sb->s_flags & SB_POSIXACL)
diff --git a/fs/ntfs3/xattr.c b/fs/ntfs3/xattr.c
index ac4b37bf8832..6f88cb77a17f 100644
--- a/fs/ntfs3/xattr.c
+++ b/fs/ntfs3/xattr.c
@@ -769,7 +769,7 @@ int ntfs_acl_chmod(struct user_namespace *mnt_userns, struct inode *inode)
int ntfs_permission(struct user_namespace *mnt_userns, struct inode *inode,
int mask)
{
- if (ntfs_sb(inode->i_sb)->options->no_acs_rules) {
+ if (ntfs_sb(inode->i_sb)->options->noacsrules) {
/* "No access rules" mode - Allow all changes. */
return 0;
}
--
2.30.0
1
0
[PATCH OLK-5.10 041/107] fs/ntfs3: Add iocharset= mount option as alias for nls=
by Yin Xiujiang 08 Dec '21
by Yin Xiujiang 08 Dec '21
08 Dec '21
From: Kari Argillander <kari.argillander(a)gmail.com>
mainline inclusion
from mainline-v5.15
commit e274cde8c7550cac46eb7aba3a77aff44ae0b301
category: feature
bugzilla:
https://gitee.com/openeuler/kernel/issues/I4G67J?from=project-issue
CVE: NA
----------------------------------------------------------------------
Other fs drivers are using iocharset= mount option for specifying charset.
So add it also for ntfs3 and mark old nls= mount option as deprecated.
Reviewed-by: Pali Rohár <pali(a)kernel.org>
Signed-off-by: Kari Argillander <kari.argillander(a)gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
Signed-off-by: Yin Xiujiang <yinxiujiang(a)kylinos.cn>
---
Documentation/filesystems/ntfs3.rst | 4 ++--
fs/ntfs3/super.c | 18 +++++++++++-------
2 files changed, 13 insertions(+), 9 deletions(-)
diff --git a/Documentation/filesystems/ntfs3.rst b/Documentation/filesystems/ntfs3.rst
index af7158de6fde..ded706474825 100644
--- a/Documentation/filesystems/ntfs3.rst
+++ b/Documentation/filesystems/ntfs3.rst
@@ -32,12 +32,12 @@ generic ones.
===============================================================================
-nls=name This option informs the driver how to interpret path
+iocharset=name This option informs the driver how to interpret path
strings and translate them to Unicode and back. If
this option is not set, the default codepage will be
used (CONFIG_NLS_DEFAULT).
Examples:
- 'nls=utf8'
+ 'iocharset=utf8'
uid=
gid=
diff --git a/fs/ntfs3/super.c b/fs/ntfs3/super.c
index 729ead6f2fac..503e2e23f711 100644
--- a/fs/ntfs3/super.c
+++ b/fs/ntfs3/super.c
@@ -226,7 +226,7 @@ enum Opt {
Opt_nohidden,
Opt_showmeta,
Opt_acl,
- Opt_nls,
+ Opt_iocharset,
Opt_prealloc,
Opt_no_acs_rules,
Opt_err,
@@ -245,9 +245,13 @@ static const struct fs_parameter_spec ntfs_fs_parameters[] = {
fsparam_flag_no("hidden", Opt_nohidden),
fsparam_flag_no("acl", Opt_acl),
fsparam_flag_no("showmeta", Opt_showmeta),
- fsparam_string("nls", Opt_nls),
fsparam_flag_no("prealloc", Opt_prealloc),
fsparam_flag("no_acs_rules", Opt_no_acs_rules),
+ fsparam_string("iocharset", Opt_iocharset),
+
+ __fsparam(fs_param_is_string,
+ "nls", Opt_iocharset,
+ fs_param_deprecated, NULL),
{}
};
@@ -346,7 +350,7 @@ static int ntfs_fs_parse_param(struct fs_context *fc,
case Opt_showmeta:
opts->showmeta = result.negated ? 0 : 1;
break;
- case Opt_nls:
+ case Opt_iocharset:
kfree(opts->nls_name);
opts->nls_name = param->string;
param->string = NULL;
@@ -380,11 +384,11 @@ static int ntfs_fs_reconfigure(struct fs_context *fc)
new_opts->nls = ntfs_load_nls(new_opts->nls_name);
if (IS_ERR(new_opts->nls)) {
new_opts->nls = NULL;
- errorf(fc, "ntfs3: Cannot load nls %s", new_opts->nls_name);
+ errorf(fc, "ntfs3: Cannot load iocharset %s", new_opts->nls_name);
return -EINVAL;
}
if (new_opts->nls != sbi->options->nls)
- return invalf(fc, "ntfs3: Cannot use different nls when remounting!");
+ return invalf(fc, "ntfs3: Cannot use different iocharset when remounting!");
sync_filesystem(sb);
@@ -528,9 +532,9 @@ static int ntfs_show_options(struct seq_file *m, struct dentry *root)
if (opts->dmask)
seq_printf(m, ",dmask=%04o", ~opts->fs_dmask_inv);
if (opts->nls)
- seq_printf(m, ",nls=%s", opts->nls->charset);
+ seq_printf(m, ",iocharset=%s", opts->nls->charset);
else
- seq_puts(m, ",nls=utf8");
+ seq_puts(m, ",iocharset=utf8");
if (opts->sys_immutable)
seq_puts(m, ",sys_immutable");
if (opts->discard)
--
2.30.0
1
0
[PATCH OLK-5.10 040/107] fs/ntfs3: Make mount option nohidden more universal
by Yin Xiujiang 08 Dec '21
by Yin Xiujiang 08 Dec '21
08 Dec '21
From: Kari Argillander <kari.argillander(a)gmail.com>
mainline inclusion
from mainline-v5.15
commit 9d1939f4575f3fda70dd94542dbd4d775e104132
category: feature
bugzilla:
https://gitee.com/openeuler/kernel/issues/I4G67J?from=project-issue
CVE: NA
----------------------------------------------------------------------
If we call Opt_nohidden with just keyword hidden, then we can use
hidden/nohidden when mounting. We already use this method for almoust
all other parameters so it is just logical that this will use same
method.
Acked-by: Christian Brauner <christian.brauner(a)ubuntu.com>
Reviewed-by: Christoph Hellwig <hch(a)lst.de>
Reviewed-by: Pali Rohár <pali(a)kernel.org>
Signed-off-by: Kari Argillander <kari.argillander(a)gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
Signed-off-by: Yin Xiujiang <yinxiujiang(a)kylinos.cn>
---
fs/ntfs3/super.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/ntfs3/super.c b/fs/ntfs3/super.c
index 420cd1409170..729ead6f2fac 100644
--- a/fs/ntfs3/super.c
+++ b/fs/ntfs3/super.c
@@ -242,7 +242,7 @@ static const struct fs_parameter_spec ntfs_fs_parameters[] = {
fsparam_flag_no("discard", Opt_discard),
fsparam_flag_no("force", Opt_force),
fsparam_flag_no("sparse", Opt_sparse),
- fsparam_flag("nohidden", Opt_nohidden),
+ fsparam_flag_no("hidden", Opt_nohidden),
fsparam_flag_no("acl", Opt_acl),
fsparam_flag_no("showmeta", Opt_showmeta),
fsparam_string("nls", Opt_nls),
@@ -331,7 +331,7 @@ static int ntfs_fs_parse_param(struct fs_context *fc,
opts->sparse = result.negated ? 0 : 1;
break;
case Opt_nohidden:
- opts->nohidden = 1;
+ opts->nohidden = result.negated ? 1 : 0;
break;
case Opt_acl:
if (!result.negated)
--
2.30.0
1
0
[PATCH OLK-5.10 035/107] fs/ntfs3: Remove unnecesarry mount option noatime
by Yin Xiujiang 08 Dec '21
by Yin Xiujiang 08 Dec '21
08 Dec '21
From: Kari Argillander <kari.argillander(a)gmail.com>
mainline inclusion
from mainline-v5.15
commit b8a30b4171b9a3c22ef0605ed74a21544d00c680
category: feature
bugzilla:
https://gitee.com/openeuler/kernel/issues/I4G67J?from=project-issue
CVE: NA
----------------------------------------------------------------------
Remove unnecesarry mount option noatime because this will be handled
by VFS. Our option parser will never get opt like this.
Acked-by: Christian Brauner <christian.brauner(a)ubuntu.com>
Reviewed-by: Christoph Hellwig <hch(a)lst.de>
Reviewed-by: Pali Rohár <pali(a)kernel.org>
Signed-off-by: Kari Argillander <kari.argillander(a)gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
Signed-off-by: Yin Xiujiang <yinxiujiang(a)kylinos.cn>
---
Documentation/filesystems/ntfs3.rst | 4 ----
fs/ntfs3/super.c | 7 -------
2 files changed, 11 deletions(-)
diff --git a/Documentation/filesystems/ntfs3.rst b/Documentation/filesystems/ntfs3.rst
index ffe9ea0c1499..af7158de6fde 100644
--- a/Documentation/filesystems/ntfs3.rst
+++ b/Documentation/filesystems/ntfs3.rst
@@ -85,10 +85,6 @@ acl Support POSIX ACLs (Access Control Lists). Effective if
supported by Kernel. Not to be confused with NTFS ACLs.
The option specified as acl enables support for POSIX ACLs.
-noatime All files and directories will not update their last access
- time attribute if a partition is mounted with this parameter.
- This option can speed up file system operation.
-
===============================================================================
ToDo list
diff --git a/fs/ntfs3/super.c b/fs/ntfs3/super.c
index 55bbc9200a10..a18b99a3e3b5 100644
--- a/fs/ntfs3/super.c
+++ b/fs/ntfs3/super.c
@@ -223,7 +223,6 @@ enum Opt {
Opt_nohidden,
Opt_showmeta,
Opt_acl,
- Opt_noatime,
Opt_nls,
Opt_prealloc,
Opt_no_acs_rules,
@@ -242,7 +241,6 @@ static const match_table_t ntfs_tokens = {
{ Opt_sparse, "sparse" },
{ Opt_nohidden, "nohidden" },
{ Opt_acl, "acl" },
- { Opt_noatime, "noatime" },
{ Opt_showmeta, "showmeta" },
{ Opt_nls, "nls=%s" },
{ Opt_prealloc, "prealloc" },
@@ -333,9 +331,6 @@ static noinline int ntfs_parse_options(struct super_block *sb, char *options,
ntfs_err(sb, "support for ACL not compiled in!");
return -EINVAL;
#endif
- case Opt_noatime:
- sb->s_flags |= SB_NOATIME;
- break;
case Opt_showmeta:
opts->showmeta = 1;
break;
@@ -587,8 +582,6 @@ static int ntfs_show_options(struct seq_file *m, struct dentry *root)
seq_puts(m, ",prealloc");
if (sb->s_flags & SB_POSIXACL)
seq_puts(m, ",acl");
- if (sb->s_flags & SB_NOATIME)
- seq_puts(m, ",noatime");
return 0;
}
--
2.30.0
1
0
[PATCH OLK-5.10 031/107] fs/ntfs3: Fix integer overflow in ni_fiemap with fiemap_prep()
by Yin Xiujiang 08 Dec '21
by Yin Xiujiang 08 Dec '21
08 Dec '21
From: Kari Argillander <kari.argillander(a)gmail.com>
mainline inclusion
from mainline-v5.15
commit d4e8e135a9af7d8d939bba1874ab314322fc2dc2
category: feature
bugzilla:
https://gitee.com/openeuler/kernel/issues/I4G67J?from=project-issue
CVE: NA
----------------------------------------------------------------------
Use fiemap_prep() to check valid flags. It also shrink request scope
(@len) to what the fs can actually handle.
This address following Smatch static checker warning:
fs/ntfs3/frecord.c:1894 ni_fiemap()
warn: potential integer overflow from user 'vbo + len'
Because fiemap_prep() shrinks @len this cannot happened anymore.
Reported-by: Dan Carpenter <dan.carpenter(a)oracle.com>
Link: lore.kernel.org/ntfs3/20210825080440.GA17407@kili/
Fixes: 4342306f0f0d ("fs/ntfs3: Add file operations and implementation")
Signed-off-by: Kari Argillander <kari.argillander(a)gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
Signed-off-by: Yin Xiujiang <yinxiujiang(a)kylinos.cn>
---
fs/ntfs3/file.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/fs/ntfs3/file.c b/fs/ntfs3/file.c
index 89557d60a9b0..f9c9a8c91b46 100644
--- a/fs/ntfs3/file.c
+++ b/fs/ntfs3/file.c
@@ -1212,8 +1212,9 @@ int ntfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
int err;
struct ntfs_inode *ni = ntfs_i(inode);
- if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR)
- return -EOPNOTSUPP;
+ err = fiemap_prep(inode, fieinfo, start, &len, ~FIEMAP_FLAG_XATTR);
+ if (err)
+ return err;
ni_lock(ni);
--
2.30.0
1
0
[PATCH OLK-5.10 030/107] fs/ntfs3: Restyle comments to better align with kernel-doc
by Yin Xiujiang 08 Dec '21
by Yin Xiujiang 08 Dec '21
08 Dec '21
From: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
mainline inclusion
from mainline-v5.15
commit d3624466b56dd5b1886c1dff500525b544c19c83
category: feature
bugzilla:
https://gitee.com/openeuler/kernel/issues/I4G67J?from=project-issue
CVE: NA
----------------------------------------------------------------------
Signed-off-by: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
Signed-off-by: Yin Xiujiang <yinxiujiang(a)kylinos.cn>
---
fs/ntfs3/attrib.c | 18 +++++++++++-------
fs/ntfs3/bitmap.c | 5 ++---
fs/ntfs3/file.c | 18 +++++++++---------
fs/ntfs3/frecord.c | 27 +++++++++++++--------------
fs/ntfs3/fslog.c | 11 +++++++----
fs/ntfs3/fsntfs.c | 8 ++++----
fs/ntfs3/index.c | 8 +++++---
fs/ntfs3/inode.c | 20 ++++++++++----------
fs/ntfs3/lznt.c | 5 +++--
fs/ntfs3/ntfs.h | 2 +-
fs/ntfs3/ntfs_fs.h | 24 ++++++++++++------------
fs/ntfs3/record.c | 2 +-
fs/ntfs3/super.c | 2 +-
fs/ntfs3/upcase.c | 2 +-
fs/ntfs3/xattr.c | 7 ++++---
15 files changed, 84 insertions(+), 75 deletions(-)
diff --git a/fs/ntfs3/attrib.c b/fs/ntfs3/attrib.c
index ffc323bacc9f..34c4cbf7e29b 100644
--- a/fs/ntfs3/attrib.c
+++ b/fs/ntfs3/attrib.c
@@ -199,6 +199,7 @@ int attr_allocate_clusters(struct ntfs_sb_info *sbi, struct runs_tree *run,
/* Add new fragment into run storage. */
if (!run_add_entry(run, vcn, lcn, flen, opt == ALLOCATE_MFT)) {
+ /* Undo last 'ntfs_look_for_free_space' */
down_write_nested(&wnd->rw_lock, BITMAP_MUTEX_CLUSTERS);
wnd_set_free(wnd, lcn, flen);
up_write(&wnd->rw_lock);
@@ -351,7 +352,6 @@ int attr_make_nonresident(struct ntfs_inode *ni, struct ATTRIB *attr,
run_close(run);
out1:
kfree(attr_s);
- /* Reinsert le. */
out:
return err;
}
@@ -1153,14 +1153,18 @@ int attr_load_runs_vcn(struct ntfs_inode *ni, enum ATTR_TYPE type,
u16 ro;
attr = ni_find_attr(ni, NULL, NULL, type, name, name_len, &vcn, NULL);
- if (!attr)
+ if (!attr) {
+ /* Is record corrupted? */
return -ENOENT;
+ }
svcn = le64_to_cpu(attr->nres.svcn);
evcn = le64_to_cpu(attr->nres.evcn);
- if (evcn < vcn || vcn < svcn)
+ if (evcn < vcn || vcn < svcn) {
+ /* Is record corrupted? */
return -EINVAL;
+ }
ro = le16_to_cpu(attr->nres.run_off);
err = run_unpack_ex(run, ni->mi.sbi, ni->mi.rno, svcn, evcn, svcn,
@@ -1171,7 +1175,7 @@ int attr_load_runs_vcn(struct ntfs_inode *ni, enum ATTR_TYPE type,
}
/*
- * attr_wof_load_runs_range - Load runs for given range [from to).
+ * attr_load_runs_range - Load runs for given range [from to).
*/
int attr_load_runs_range(struct ntfs_inode *ni, enum ATTR_TYPE type,
const __le16 *name, u8 name_len, struct runs_tree *run,
@@ -1974,7 +1978,7 @@ int attr_punch_hole(struct ntfs_inode *ni, u64 vbo, u64 bytes, u32 *frame_size)
total_size = le64_to_cpu(attr_b->nres.total_size);
if (vbo >= alloc_size) {
- // NOTE: It is allowed.
+ /* NOTE: It is allowed. */
return 0;
}
@@ -1986,9 +1990,9 @@ int attr_punch_hole(struct ntfs_inode *ni, u64 vbo, u64 bytes, u32 *frame_size)
bytes -= vbo;
if ((vbo & mask) || (bytes & mask)) {
- /* We have to zero a range(s)*/
+ /* We have to zero a range(s). */
if (frame_size == NULL) {
- /* Caller insists range is aligned */
+ /* Caller insists range is aligned. */
return -EINVAL;
}
*frame_size = mask + 1;
diff --git a/fs/ntfs3/bitmap.c b/fs/ntfs3/bitmap.c
index 06ae38adb8ad..831501555009 100644
--- a/fs/ntfs3/bitmap.c
+++ b/fs/ntfs3/bitmap.c
@@ -29,7 +29,6 @@ struct rb_node_key {
size_t key;
};
-/* Tree is sorted by start (key). */
struct e_node {
struct rb_node_key start; /* Tree sorted by start. */
struct rb_node_key count; /* Tree sorted by len. */
@@ -1117,7 +1116,7 @@ size_t wnd_find(struct wnd_bitmap *wnd, size_t to_alloc, size_t hint,
sb = wnd->sb;
log2_bits = sb->s_blocksize_bits + 3;
- /* At most two ranges [hint, max_alloc) + [0, hint) */
+ /* At most two ranges [hint, max_alloc) + [0, hint). */
Again:
/* TODO: Optimize request for case nbits > wbits. */
@@ -1241,7 +1240,7 @@ size_t wnd_find(struct wnd_bitmap *wnd, size_t to_alloc, size_t hint,
continue;
}
- /* Read window */
+ /* Read window. */
bh = wnd_map(wnd, iw);
if (IS_ERR(bh)) {
// TODO: Error.
diff --git a/fs/ntfs3/file.c b/fs/ntfs3/file.c
index 62ebfa324bff..89557d60a9b0 100644
--- a/fs/ntfs3/file.c
+++ b/fs/ntfs3/file.c
@@ -190,7 +190,8 @@ static int ntfs_extend_initialized_size(struct file *file,
/*
* ntfs_zero_range - Helper function for punch_hole.
- * It zeroes a range [vbo, vbo_to)
+ *
+ * It zeroes a range [vbo, vbo_to).
*/
static int ntfs_zero_range(struct inode *inode, u64 vbo, u64 vbo_to)
{
@@ -231,12 +232,12 @@ static int ntfs_zero_range(struct inode *inode, u64 vbo, u64 vbo_to)
if (!buffer_mapped(bh)) {
ntfs_get_block(inode, iblock, bh, 0);
- /* unmapped? It's a hole - nothing to do */
+ /* Unmapped? It's a hole - nothing to do. */
if (!buffer_mapped(bh))
continue;
}
- /* Ok, it's mapped. Make sure it's up-to-date */
+ /* Ok, it's mapped. Make sure it's up-to-date. */
if (PageUptodate(page))
set_buffer_uptodate(bh);
@@ -272,9 +273,8 @@ static int ntfs_zero_range(struct inode *inode, u64 vbo, u64 vbo_to)
}
/*
- * ntfs_sparse_cluster
+ * ntfs_sparse_cluster - Helper function to zero a new allocated clusters.
*
- * Helper function to zero a new allocated clusters
* NOTE: 512 <= cluster size <= 2M
*/
void ntfs_sparse_cluster(struct inode *inode, struct page *page0, CLST vcn,
@@ -588,7 +588,7 @@ static long ntfs_fallocate(struct file *file, int mode, loff_t vbo, loff_t len)
truncate_pagecache(inode, vbo_down);
if (!is_sparsed(ni) && !is_compressed(ni)) {
- /* normal file */
+ /* Normal file. */
err = ntfs_zero_range(inode, vbo, end);
goto out;
}
@@ -599,7 +599,7 @@ static long ntfs_fallocate(struct file *file, int mode, loff_t vbo, loff_t len)
if (err != E_NTFS_NOTALIGNED)
goto out;
- /* process not aligned punch */
+ /* Process not aligned punch. */
mask = frame_size - 1;
vbo_a = (vbo + mask) & ~mask;
end_a = end & ~mask;
@@ -647,7 +647,7 @@ static long ntfs_fallocate(struct file *file, int mode, loff_t vbo, loff_t len)
if (err)
goto out;
- /* Wait for existing dio to complete */
+ /* Wait for existing dio to complete. */
inode_dio_wait(inode);
truncate_pagecache(inode, vbo_down);
@@ -1127,7 +1127,7 @@ static ssize_t ntfs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
goto out;
if (WARN_ON(ni->ni_flags & NI_FLAG_COMPRESSED_MASK)) {
- /* Should never be here, see ntfs_file_open() */
+ /* Should never be here, see ntfs_file_open(). */
ret = -EOPNOTSUPP;
goto out;
}
diff --git a/fs/ntfs3/frecord.c b/fs/ntfs3/frecord.c
index 3f48b612ec96..938b12d56ca6 100644
--- a/fs/ntfs3/frecord.c
+++ b/fs/ntfs3/frecord.c
@@ -56,7 +56,7 @@ static struct mft_inode *ni_find_mi(struct ntfs_inode *ni, CLST rno)
/*
* ni_add_mi - Add new mft_inode into ntfs_inode.
-*/
+ */
static void ni_add_mi(struct ntfs_inode *ni, struct mft_inode *mi)
{
ni_ins_mi(ni, &ni->mi_tree, mi->rno, &mi->node);
@@ -70,9 +70,8 @@ void ni_remove_mi(struct ntfs_inode *ni, struct mft_inode *mi)
rb_erase(&mi->node, &ni->mi_tree);
}
-/* ni_std
- *
- * Return: Pointer into std_info from primary record.
+/*
+ * ni_std - Return: Pointer into std_info from primary record.
*/
struct ATTR_STD_INFO *ni_std(struct ntfs_inode *ni)
{
@@ -385,7 +384,7 @@ bool ni_add_subrecord(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi)
/*
* ni_remove_attr - Remove all attributes for the given type/name/id.
-*/
+ */
int ni_remove_attr(struct ntfs_inode *ni, enum ATTR_TYPE type,
const __le16 *name, size_t name_len, bool base_only,
const __le16 *id)
@@ -740,7 +739,7 @@ static int ni_try_remove_attr_list(struct ntfs_inode *ni)
/*
* ni_create_attr_list - Generates an attribute list for this primary record.
-*/
+ */
int ni_create_attr_list(struct ntfs_inode *ni)
{
struct ntfs_sb_info *sbi = ni->mi.sbi;
@@ -939,7 +938,7 @@ static int ni_ins_attr_ext(struct ntfs_inode *ni, struct ATTR_LIST_ENTRY *le,
if (is_mft_data &&
(mi_enum_attr(mi, NULL) ||
vbo <= ((u64)mi->rno << sbi->record_bits))) {
- /* We can't accept this record 'case MFT's bootstrapping. */
+ /* We can't accept this record 'cause MFT's bootstrapping. */
continue;
}
if (is_mft &&
@@ -1078,7 +1077,7 @@ static int ni_insert_attr(struct ntfs_inode *ni, enum ATTR_TYPE type,
*/
max_free = free;
- /* Estimate the result of moving all possible attributes away.*/
+ /* Estimate the result of moving all possible attributes away. */
attr = NULL;
while ((attr = mi_enum_attr(&ni->mi, attr))) {
@@ -1095,7 +1094,7 @@ static int ni_insert_attr(struct ntfs_inode *ni, enum ATTR_TYPE type,
goto out;
}
- /* Start real attribute moving */
+ /* Start real attribute moving. */
attr = NULL;
for (;;) {
@@ -1542,7 +1541,7 @@ int ni_delete_all(struct ntfs_inode *ni)
node = next;
}
- /* Free base record */
+ /* Free base record. */
clear_rec_inuse(ni->mi.mrec);
ni->mi.dirty = true;
err = mi_write(&ni->mi, 0);
@@ -2243,7 +2242,7 @@ int ni_decompress_file(struct ntfs_inode *ni)
}
if (attr->non_res && is_attr_sparsed(attr)) {
- /* Sarsed attribute header is 8 bytes bigger than normal. */
+ /* Sparsed attribute header is 8 bytes bigger than normal. */
struct MFT_REC *rec = mi->mrec;
u32 used = le32_to_cpu(rec->used);
u32 asize = le32_to_cpu(attr->size);
@@ -2324,7 +2323,7 @@ static int decompress_lzx_xpress(struct ntfs_sb_info *sbi, const char *cmpr,
mutex_lock(&sbi->compress.mtx_xpress);
ctx = sbi->compress.xpress;
if (!ctx) {
- /* Lazy initialize Xpress decompress context */
+ /* Lazy initialize Xpress decompress context. */
ctx = xpress_allocate_decompressor();
if (!ctx) {
err = -ENOMEM;
@@ -2348,7 +2347,7 @@ static int decompress_lzx_xpress(struct ntfs_sb_info *sbi, const char *cmpr,
/*
* ni_read_frame
*
- * Pages - array of locked pages.
+ * Pages - Array of locked pages.
*/
int ni_read_frame(struct ntfs_inode *ni, u64 frame_vbo, struct page **pages,
u32 pages_per_frame)
@@ -2740,7 +2739,7 @@ int ni_write_frame(struct ntfs_inode *ni, struct page **pages,
lznt = NULL;
}
- /* Compress: frame_mem -> frame_ondisk. */
+ /* Compress: frame_mem -> frame_ondisk */
compr_size = compress_lznt(frame_mem, frame_size, frame_ondisk,
frame_size, sbi->compress.lznt);
mutex_unlock(&sbi->compress.mtx_lznt);
diff --git a/fs/ntfs3/fslog.c b/fs/ntfs3/fslog.c
index 6f6057129fdd..b5853aed0e25 100644
--- a/fs/ntfs3/fslog.c
+++ b/fs/ntfs3/fslog.c
@@ -1362,7 +1362,8 @@ static void log_create(struct ntfs_log *log, u32 l_size, const u64 last_lsn,
/* Compute the log page values. */
log->data_off = ALIGN(
offsetof(struct RECORD_PAGE_HDR, fixups) +
- sizeof(short) * ((log->page_size >> SECTOR_SHIFT) + 1), 8);
+ sizeof(short) * ((log->page_size >> SECTOR_SHIFT) + 1),
+ 8);
log->data_size = log->page_size - log->data_off;
log->record_header_len = sizeof(struct LFS_RECORD_HDR);
@@ -1372,7 +1373,9 @@ static void log_create(struct ntfs_log *log, u32 l_size, const u64 last_lsn,
/* Compute the restart page values. */
log->ra_off = ALIGN(
offsetof(struct RESTART_HDR, fixups) +
- sizeof(short) * ((log->sys_page_size >> SECTOR_SHIFT) + 1), 8);
+ sizeof(short) *
+ ((log->sys_page_size >> SECTOR_SHIFT) + 1),
+ 8);
log->restart_size = log->sys_page_size - log->ra_off;
log->ra_size = struct_size(log->ra, clients, 1);
log->current_openlog_count = open_log_count;
@@ -5132,8 +5135,8 @@ int log_replay(struct ntfs_inode *ni, bool *initialized)
rh->sys_page_size = cpu_to_le32(log->page_size);
rh->page_size = cpu_to_le32(log->page_size);
- t16 = ALIGN(offsetof(struct RESTART_HDR, fixups) +
- sizeof(short) * t16, 8);
+ t16 = ALIGN(offsetof(struct RESTART_HDR, fixups) + sizeof(short) * t16,
+ 8);
rh->ra_off = cpu_to_le16(t16);
rh->minor_ver = cpu_to_le16(1); // 0x1A:
rh->major_ver = cpu_to_le16(1); // 0x1C:
diff --git a/fs/ntfs3/fsntfs.c b/fs/ntfs3/fsntfs.c
index 669249439217..91e3743e1442 100644
--- a/fs/ntfs3/fsntfs.c
+++ b/fs/ntfs3/fsntfs.c
@@ -312,7 +312,7 @@ int ntfs_loadlog_and_replay(struct ntfs_inode *ni, struct ntfs_sb_info *sbi)
if (sb_rdonly(sb) || !initialized)
goto out;
- /* Fill LogFile by '-1' if it is initialized.ssss */
+ /* Fill LogFile by '-1' if it is initialized. */
err = ntfs_bio_fill_1(sbi, &ni->file.run);
out:
@@ -960,10 +960,10 @@ int ntfs_set_state(struct ntfs_sb_info *sbi, enum NTFS_DIRTY_FLAGS dirty)
/* verify(!ntfs_update_mftmirr()); */
/*
- * if we used wait=1, sync_inode_metadata waits for the io for the
+ * If we used wait=1, sync_inode_metadata waits for the io for the
* inode to finish. It hangs when media is removed.
* So wait=0 is sent down to sync_inode_metadata
- * and filemap_fdatawrite is used for the data blocks
+ * and filemap_fdatawrite is used for the data blocks.
*/
err = sync_inode_metadata(&ni->vfs_inode, 0);
if (!err)
@@ -1917,7 +1917,7 @@ int ntfs_security_init(struct ntfs_sb_info *sbi)
sbi->security.next_id = SECURITY_ID_FIRST;
/* Always write new security at the end of bucket. */
sbi->security.next_off =
- ALIGN(sds_size - SecurityDescriptorsBlockSize, 16);
+ ALIGN(sds_size - SecurityDescriptorsBlockSize, 16);
off = 0;
ne = NULL;
diff --git a/fs/ntfs3/index.c b/fs/ntfs3/index.c
index 1224b8e42b3e..0daca9adc54c 100644
--- a/fs/ntfs3/index.c
+++ b/fs/ntfs3/index.c
@@ -2624,17 +2624,19 @@ int indx_update_dup(struct ntfs_inode *ni, struct ntfs_sb_info *sbi,
e_fname = (struct ATTR_FILE_NAME *)(e + 1);
if (!memcmp(&e_fname->dup, dup, sizeof(*dup))) {
- /* Nothing to update in index! Try to avoid this call. */
+ /*
+ * Nothing to update in index! Try to avoid this call.
+ */
goto out;
}
memcpy(&e_fname->dup, dup, sizeof(*dup));
if (fnd->level) {
- /* directory entry in index */
+ /* Directory entry in index. */
err = indx_write(indx, ni, fnd->nodes[fnd->level - 1], sync);
} else {
- /* directory entry in directory MFT record */
+ /* Directory entry in directory MFT record. */
mi->dirty = true;
if (sync)
err = mi_write(mi, 1);
diff --git a/fs/ntfs3/inode.c b/fs/ntfs3/inode.c
index 8f72066b3229..db2a5a4c38e4 100644
--- a/fs/ntfs3/inode.c
+++ b/fs/ntfs3/inode.c
@@ -89,7 +89,7 @@ static struct inode *ntfs_read_mft(struct inode *inode,
}
if (le32_to_cpu(rec->total) != sbi->record_size) {
- // Bad inode?
+ /* Bad inode? */
err = -EINVAL;
goto out;
}
@@ -605,7 +605,7 @@ static noinline int ntfs_get_block_vbo(struct inode *inode, u64 vbo,
if (vbo >= valid)
set_buffer_new(bh);
} else if (create) {
- /*normal write*/
+ /* Normal write. */
if (bytes > bh->b_size)
bytes = bh->b_size;
@@ -1091,7 +1091,7 @@ int inode_write_data(struct inode *inode, const void *data, size_t bytes)
/*
* ntfs_reparse_bytes
*
- * Number of bytes to for REPARSE_DATA_BUFFER(IO_REPARSE_TAG_SYMLINK)
+ * Number of bytes for REPARSE_DATA_BUFFER(IO_REPARSE_TAG_SYMLINK)
* for unicode string of @uni_len length.
*/
static inline u32 ntfs_reparse_bytes(u32 uni_len)
@@ -1205,13 +1205,13 @@ struct inode *ntfs_create_inode(struct user_namespace *mnt_userns,
return ERR_PTR(-EINVAL);
if (S_ISDIR(mode)) {
- /* use parent's directory attributes */
+ /* Use parent's directory attributes. */
fa = dir_ni->std_fa | FILE_ATTRIBUTE_DIRECTORY |
FILE_ATTRIBUTE_ARCHIVE;
/*
- * By default child directory inherits parent attributes
- * root directory is hidden + system
- * Make an exception for children in root
+ * By default child directory inherits parent attributes.
+ * Root directory is hidden + system.
+ * Make an exception for children in root.
*/
if (dir->i_ino == MFT_REC_ROOT)
fa &= ~(FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_SYSTEM);
@@ -1220,8 +1220,8 @@ struct inode *ntfs_create_inode(struct user_namespace *mnt_userns,
fa = FILE_ATTRIBUTE_REPARSE_POINT;
/*
- * linux: there are dir/file/symlink and so on.
- * NTFS: symlinks are "dir + reparse" or "file + reparse".
+ * Linux: there are dir/file/symlink and so on.
+ * NTFS: symlinks are "dir + reparse" or "file + reparse"
* It is good idea to create:
* dir + reparse if 'symname' points to directory
* or
@@ -1860,7 +1860,7 @@ static noinline int ntfs_readlink_hlp(struct inode *inode, char *buffer,
default:
if (IsReparseTagMicrosoft(rp->ReparseTag)) {
- /* unknown Microsoft Tag */
+ /* Unknown Microsoft Tag. */
goto out;
}
if (!IsReparseTagNameSurrogate(rp->ReparseTag) ||
diff --git a/fs/ntfs3/lznt.c b/fs/ntfs3/lznt.c
index 3acf0d9f0b15..f1f691a67cc4 100644
--- a/fs/ntfs3/lznt.c
+++ b/fs/ntfs3/lznt.c
@@ -296,8 +296,9 @@ static inline ssize_t decompress_chunk(u8 *unc, u8 *unc_end, const u8 *cmpr,
*/
struct lznt *get_lznt_ctx(int level)
{
- struct lznt *r = kzalloc(level ? offsetof(struct lznt, hash) :
- sizeof(struct lznt), GFP_NOFS);
+ struct lznt *r = kzalloc(level ? offsetof(struct lznt, hash)
+ : sizeof(struct lznt),
+ GFP_NOFS);
if (r)
r->std = !level;
diff --git a/fs/ntfs3/ntfs.h b/fs/ntfs3/ntfs.h
index 0fd7bffb98d4..6bb3e595263b 100644
--- a/fs/ntfs3/ntfs.h
+++ b/fs/ntfs3/ntfs.h
@@ -262,7 +262,7 @@ enum RECORD_FLAG {
RECORD_FLAG_UNKNOWN = cpu_to_le16(0x0008),
};
-/* MFT Record structure, */
+/* MFT Record structure. */
struct MFT_REC {
struct NTFS_RECORD_HEADER rhdr; // 'FILE'
diff --git a/fs/ntfs3/ntfs_fs.h b/fs/ntfs3/ntfs_fs.h
index f9436cbbc347..97e682ebcfb9 100644
--- a/fs/ntfs3/ntfs_fs.h
+++ b/fs/ntfs3/ntfs_fs.h
@@ -59,18 +59,18 @@ struct ntfs_mount_options {
u16 fs_fmask_inv;
u16 fs_dmask_inv;
- unsigned uid : 1, /* uid was set. */
- gid : 1, /* gid was set. */
- fmask : 1, /* fmask was set. */
- dmask : 1, /* dmask was set. */
- sys_immutable : 1,/* Immutable system files. */
- discard : 1, /* Issue discard requests on deletions. */
- sparse : 1, /* Create sparse files. */
- showmeta : 1, /* Show meta files. */
- nohidden : 1, /* Do not show hidden files. */
- force : 1, /* Rw mount dirty volume. */
- no_acs_rules : 1,/*Exclude acs rules. */
- prealloc : 1 /* Preallocate space when file is growing. */
+ unsigned uid : 1, /* uid was set. */
+ gid : 1, /* gid was set. */
+ fmask : 1, /* fmask was set. */
+ dmask : 1, /* dmask was set. */
+ sys_immutable : 1, /* Immutable system files. */
+ discard : 1, /* Issue discard requests on deletions. */
+ sparse : 1, /* Create sparse files. */
+ showmeta : 1, /* Show meta files. */
+ nohidden : 1, /* Do not show hidden files. */
+ force : 1, /* Rw mount dirty volume. */
+ no_acs_rules : 1, /*Exclude acs rules. */
+ prealloc : 1 /* Preallocate space when file is growing. */
;
};
diff --git a/fs/ntfs3/record.c b/fs/ntfs3/record.c
index 61e3f2fb619f..103705c86772 100644
--- a/fs/ntfs3/record.c
+++ b/fs/ntfs3/record.c
@@ -219,7 +219,7 @@ struct ATTRIB *mi_enum_attr(struct mft_inode *mi, struct ATTRIB *attr)
asize = le32_to_cpu(attr->size);
if (asize < SIZEOF_RESIDENT) {
- /* Impossible 'cause we should not return such attribute */
+ /* Impossible 'cause we should not return such attribute. */
return NULL;
}
diff --git a/fs/ntfs3/super.c b/fs/ntfs3/super.c
index 2fbab8a931ee..dbecf095da59 100644
--- a/fs/ntfs3/super.c
+++ b/fs/ntfs3/super.c
@@ -1053,7 +1053,7 @@ static int ntfs_fill_super(struct super_block *sb, void *data, int silent)
iput(inode);
- /* Load $LogFile to replay. */
+ /* Load LogFile to replay. */
ref.low = cpu_to_le32(MFT_REC_LOG);
ref.seq = cpu_to_le16(MFT_REC_LOG);
inode = ntfs_iget5(sb, &ref, &NAME_LOGFILE);
diff --git a/fs/ntfs3/upcase.c b/fs/ntfs3/upcase.c
index eb65bbd939e8..bbeba778237e 100644
--- a/fs/ntfs3/upcase.c
+++ b/fs/ntfs3/upcase.c
@@ -34,7 +34,7 @@ static inline u16 upcase_unicode_char(const u16 *upcase, u16 chr)
* - Case insensitive
* - If name equals and 'bothcases' then
* - Case sensitive
- * 'Straigth way' code scans input names twice in worst case.
+ * 'Straight way' code scans input names twice in worst case.
* Optimized code scans input names only once.
*/
int ntfs_cmp_names(const __le16 *s1, size_t l1, const __le16 *s2, size_t l2,
diff --git a/fs/ntfs3/xattr.c b/fs/ntfs3/xattr.c
index 22fd5eb32c5b..b15d532e4a17 100644
--- a/fs/ntfs3/xattr.c
+++ b/fs/ntfs3/xattr.c
@@ -26,9 +26,10 @@
static inline size_t unpacked_ea_size(const struct EA_FULL *ea)
{
return ea->size ? le32_to_cpu(ea->size)
- : ALIGN(struct_size(
- ea, name,
- 1 + ea->name_len + le16_to_cpu(ea->elength)), 4);
+ : ALIGN(struct_size(ea, name,
+ 1 + ea->name_len +
+ le16_to_cpu(ea->elength)),
+ 4);
}
static inline size_t packed_ea_size(const struct EA_FULL *ea)
--
2.30.0
1
0
[PATCH OLK-5.10 026/107] fs/ntfs3: Fix error handling in indx_insert_into_root()
by Yin Xiujiang 08 Dec '21
by Yin Xiujiang 08 Dec '21
08 Dec '21
From: Dan Carpenter <dan.carpenter(a)oracle.com>
mainline inclusion
from mainline-v5.15
commit b8155e95de38b25a69dfb03e4731fd6c5a28531e
category: feature
bugzilla:
https://gitee.com/openeuler/kernel/issues/I4G67J?from=project-issue
CVE: NA
----------------------------------------------------------------------
There are three bugs in this code:
1) If indx_get_root() fails, then return -EINVAL instead of success.
2) On the "/* make root external */" -EOPNOTSUPP; error path it should
free "re" but it has a memory leak.
3) If indx_new() fails then it will lead to an error pointer dereference
when we call put_indx_node().
I've re-written the error handling to be more clear.
Fixes: 82cae269cfa9 ("fs/ntfs3: Add initialization of super block")
Signed-off-by: Dan Carpenter <dan.carpenter(a)oracle.com>
Reviewed-by: Kari Argillander <kari.argillander(a)gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
Signed-off-by: Yin Xiujiang <yinxiujiang(a)kylinos.cn>
---
fs/ntfs3/index.c | 36 ++++++++++++++++--------------------
1 file changed, 16 insertions(+), 20 deletions(-)
diff --git a/fs/ntfs3/index.c b/fs/ntfs3/index.c
index f4729aa50671..69c6c4e0b4d9 100644
--- a/fs/ntfs3/index.c
+++ b/fs/ntfs3/index.c
@@ -1555,12 +1555,12 @@ static int indx_insert_into_root(struct ntfs_index *indx, struct ntfs_inode *ni,
u32 root_size, new_root_size;
struct ntfs_sb_info *sbi;
int ds_root;
- struct INDEX_ROOT *root, *a_root = NULL;
+ struct INDEX_ROOT *root, *a_root;
/* Get the record this root placed in */
root = indx_get_root(indx, ni, &attr, &mi);
if (!root)
- goto out;
+ return -EINVAL;
/*
* Try easy case:
@@ -1592,10 +1592,8 @@ static int indx_insert_into_root(struct ntfs_index *indx, struct ntfs_inode *ni,
/* Make a copy of root attribute to restore if error */
a_root = kmemdup(attr, asize, GFP_NOFS);
- if (!a_root) {
- err = -ENOMEM;
- goto out;
- }
+ if (!a_root)
+ return -ENOMEM;
/* copy all the non-end entries from the index root to the new buffer.*/
to_move = 0;
@@ -1605,7 +1603,7 @@ static int indx_insert_into_root(struct ntfs_index *indx, struct ntfs_inode *ni,
for (e = e0;; e = hdr_next_de(hdr, e)) {
if (!e) {
err = -EINVAL;
- goto out;
+ goto out_free_root;
}
if (de_is_last(e))
@@ -1613,14 +1611,13 @@ static int indx_insert_into_root(struct ntfs_index *indx, struct ntfs_inode *ni,
to_move += le16_to_cpu(e->size);
}
- n = NULL;
if (!to_move) {
re = NULL;
} else {
re = kmemdup(e0, to_move, GFP_NOFS);
if (!re) {
err = -ENOMEM;
- goto out;
+ goto out_free_root;
}
}
@@ -1637,7 +1634,7 @@ static int indx_insert_into_root(struct ntfs_index *indx, struct ntfs_inode *ni,
if (ds_root > 0 && used + ds_root > sbi->max_bytes_per_attr) {
/* make root external */
err = -EOPNOTSUPP;
- goto out;
+ goto out_free_re;
}
if (ds_root)
@@ -1667,7 +1664,7 @@ static int indx_insert_into_root(struct ntfs_index *indx, struct ntfs_inode *ni,
/* bug? */
ntfs_set_state(sbi, NTFS_DIRTY_ERROR);
err = -EINVAL;
- goto out1;
+ goto out_free_re;
}
if (err) {
@@ -1678,7 +1675,7 @@ static int indx_insert_into_root(struct ntfs_index *indx, struct ntfs_inode *ni,
/* bug? */
ntfs_set_state(sbi, NTFS_DIRTY_ERROR);
}
- goto out1;
+ goto out_free_re;
}
e = (struct NTFS_DE *)(root + 1);
@@ -1689,7 +1686,7 @@ static int indx_insert_into_root(struct ntfs_index *indx, struct ntfs_inode *ni,
n = indx_new(indx, ni, new_vbn, sub_vbn);
if (IS_ERR(n)) {
err = PTR_ERR(n);
- goto out1;
+ goto out_free_re;
}
hdr = &n->index->ihdr;
@@ -1716,7 +1713,7 @@ static int indx_insert_into_root(struct ntfs_index *indx, struct ntfs_inode *ni,
put_indx_node(n);
fnd_clear(fnd);
err = indx_insert_entry(indx, ni, new_de, ctx, fnd);
- goto out;
+ goto out_free_root;
}
/*
@@ -1726,7 +1723,7 @@ static int indx_insert_into_root(struct ntfs_index *indx, struct ntfs_inode *ni,
e = hdr_insert_de(indx, hdr, new_de, NULL, ctx);
if (!e) {
err = -EINVAL;
- goto out1;
+ goto out_put_n;
}
fnd_push(fnd, n, e);
@@ -1735,12 +1732,11 @@ static int indx_insert_into_root(struct ntfs_index *indx, struct ntfs_inode *ni,
n = NULL;
-out1:
+out_put_n:
+ put_indx_node(n);
+out_free_re:
kfree(re);
- if (n)
- put_indx_node(n);
-
-out:
+out_free_root:
kfree(a_root);
return err;
}
--
2.30.0
1
0
[PATCH OLK-5.10 025/107] fs/ntfs3: Potential NULL dereference in hdr_find_split()
by Yin Xiujiang 08 Dec '21
by Yin Xiujiang 08 Dec '21
08 Dec '21
From: Dan Carpenter <dan.carpenter(a)oracle.com>
mainline inclusion
from mainline-v5.15
commit 8c83a4851da1c7eda83098ade238665b15774da3
category: feature
bugzilla:
https://gitee.com/openeuler/kernel/issues/I4G67J?from=project-issue
CVE: NA
----------------------------------------------------------------------
The "e" pointer is dereferenced before it has been checked for NULL.
Move the dereference after the NULL check to prevent an Oops.
Fixes: 82cae269cfa9 ("fs/ntfs3: Add initialization of super block")
Signed-off-by: Dan Carpenter <dan.carpenter(a)oracle.com>
Reviewed-by: Kari Argillander <kari.argillander(a)gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
Signed-off-by: Yin Xiujiang <yinxiujiang(a)kylinos.cn>
---
fs/ntfs3/index.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/fs/ntfs3/index.c b/fs/ntfs3/index.c
index 5fb41c9c8910..f4729aa50671 100644
--- a/fs/ntfs3/index.c
+++ b/fs/ntfs3/index.c
@@ -557,11 +557,12 @@ static const struct NTFS_DE *hdr_find_split(const struct INDEX_HDR *hdr)
size_t o;
const struct NTFS_DE *e = hdr_first_de(hdr);
u32 used_2 = le32_to_cpu(hdr->used) >> 1;
- u16 esize = le16_to_cpu(e->size);
+ u16 esize;
if (!e || de_is_last(e))
return NULL;
+ esize = le16_to_cpu(e->size);
for (o = le32_to_cpu(hdr->de_off) + esize; o < used_2; o += esize) {
const struct NTFS_DE *p = e;
--
2.30.0
1
0
08 Dec '21
From: Dan Carpenter <dan.carpenter(a)oracle.com>
mainline inclusion
from mainline-v5.15
commit 04810f000afdbdd37825ca7f563f036119422cb7
category: feature
bugzilla:
https://gitee.com/openeuler/kernel/issues/I4G67J?from=project-issue
CVE: NA
----------------------------------------------------------------------
Return -EINVAL if ni_find_attr() fails. Don't return success.
Fixes: 82cae269cfa9 ("fs/ntfs3: Add initialization of super block")
Signed-off-by: Dan Carpenter <dan.carpenter(a)oracle.com>
Reviewed-by: Kari Argillander <kari.argillander(a)gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
Signed-off-by: Yin Xiujiang <yinxiujiang(a)kylinos.cn>
---
fs/ntfs3/index.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/fs/ntfs3/index.c b/fs/ntfs3/index.c
index 334a3cef714b..5fb41c9c8910 100644
--- a/fs/ntfs3/index.c
+++ b/fs/ntfs3/index.c
@@ -1500,6 +1500,7 @@ static int indx_add_allocate(struct ntfs_index *indx, struct ntfs_inode *ni,
alloc = ni_find_attr(ni, NULL, NULL, ATTR_ALLOC, in->name, in->name_len,
NULL, &mi);
if (!alloc) {
+ err = -EINVAL;
if (bmp)
goto out2;
goto out1;
--
2.30.0
1
0
[PATCH OLK-5.10 023/107] fs/ntfs3: fix an error code in ntfs_get_acl_ex()
by Yin Xiujiang 08 Dec '21
by Yin Xiujiang 08 Dec '21
08 Dec '21
From: Dan Carpenter <dan.carpenter(a)oracle.com>
mainline inclusion
from mainline-v5.15
commit 2926e4297053c735ab65450192dfba32a4f47fa9
category: feature
bugzilla:
https://gitee.com/openeuler/kernel/issues/I4G67J?from=project-issue
CVE: NA
----------------------------------------------------------------------
The ntfs_get_ea() function returns negative error codes or on success
it returns the length. In the original code a zero length return was
treated as -ENODATA and results in a NULL return. But it should be
treated as an invalid length and result in an PTR_ERR(-EINVAL) return.
Fixes: be71b5cba2e6 ("fs/ntfs3: Add attrib operations")
Signed-off-by: Dan Carpenter <dan.carpenter(a)oracle.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
Signed-off-by: Yin Xiujiang <yinxiujiang(a)kylinos.cn>
---
fs/ntfs3/xattr.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/ntfs3/xattr.c b/fs/ntfs3/xattr.c
index af89e50f7b9f..d3d5b9d331d1 100644
--- a/fs/ntfs3/xattr.c
+++ b/fs/ntfs3/xattr.c
@@ -521,7 +521,7 @@ static struct posix_acl *ntfs_get_acl_ex(struct user_namespace *mnt_userns,
ni_unlock(ni);
/* Translate extended attribute to acl */
- if (err > 0) {
+ if (err >= 0) {
acl = posix_acl_from_xattr(mnt_userns, buf, err);
if (!IS_ERR(acl))
set_cached_acl(inode, type, acl);
--
2.30.0
1
0
08 Dec '21
From: Dan Carpenter <dan.carpenter(a)oracle.com>
mainline inclusion
from mainline-v5.15
commit a1b04d380ab64790a7b4a8eb52e14679e47065ab
category: feature
bugzilla:
https://gitee.com/openeuler/kernel/issues/I4G67J?from=project-issue
CVE: NA
----------------------------------------------------------------------
Add a check for when the kzalloc() in init_rsttbl() fails. Some of
the callers checked for NULL and some did not. I went down the call
tree and added NULL checks where ever they were missing.
Fixes: b46acd6a6a62 ("fs/ntfs3: Add NTFS journal")
Signed-off-by: Dan Carpenter <dan.carpenter(a)oracle.com>
Reviewed-by: Kari Argillander <kari.argillander(a)gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
Signed-off-by: Yin Xiujiang <yinxiujiang(a)kylinos.cn>
---
fs/ntfs3/fslog.c | 18 ++++++++++++++++--
1 file changed, 16 insertions(+), 2 deletions(-)
diff --git a/fs/ntfs3/fslog.c b/fs/ntfs3/fslog.c
index 2c213b55979e..7144ea8a9ab8 100644
--- a/fs/ntfs3/fslog.c
+++ b/fs/ntfs3/fslog.c
@@ -809,6 +809,9 @@ static inline struct RESTART_TABLE *init_rsttbl(u16 esize, u16 used)
u32 lf = sizeof(struct RESTART_TABLE) + (used - 1) * esize;
struct RESTART_TABLE *t = kzalloc(bytes, GFP_NOFS);
+ if (!t)
+ return NULL;
+
t->size = cpu_to_le16(esize);
t->used = cpu_to_le16(used);
t->free_goal = cpu_to_le32(~0u);
@@ -831,7 +834,11 @@ static inline struct RESTART_TABLE *extend_rsttbl(struct RESTART_TABLE *tbl,
u16 esize = le16_to_cpu(tbl->size);
__le32 osize = cpu_to_le32(bytes_per_rt(tbl));
u32 used = le16_to_cpu(tbl->used);
- struct RESTART_TABLE *rt = init_rsttbl(esize, used + add);
+ struct RESTART_TABLE *rt;
+
+ rt = init_rsttbl(esize, used + add);
+ if (!rt)
+ return NULL;
memcpy(rt + 1, tbl + 1, esize * used);
@@ -864,8 +871,11 @@ static inline void *alloc_rsttbl_idx(struct RESTART_TABLE **tbl)
__le32 *e;
struct RESTART_TABLE *t = *tbl;
- if (!t->first_free)
+ if (!t->first_free) {
*tbl = t = extend_rsttbl(t, 16, ~0u);
+ if (!t)
+ return NULL;
+ }
off = le32_to_cpu(t->first_free);
@@ -4482,6 +4492,10 @@ int log_replay(struct ntfs_inode *ni, bool *initialized)
}
dp = alloc_rsttbl_idx(&dptbl);
+ if (!dp) {
+ err = -ENOMEM;
+ goto out;
+ }
dp->target_attr = cpu_to_le32(t16);
dp->transfer_len = cpu_to_le32(t32 << sbi->cluster_bits);
dp->lcns_follow = cpu_to_le32(t32);
--
2.30.0
1
0
[PATCH OLK-5.10 021/107] fs/ntfs3: Use kcalloc/kmalloc_array over kzalloc/kmalloc
by Yin Xiujiang 08 Dec '21
by Yin Xiujiang 08 Dec '21
08 Dec '21
From: Kari Argillander <kari.argillander(a)gmail.com>
mainline inclusion
from mainline-v5.15
commit 345482bc431f6492beb464696341626057f67771
category: feature
bugzilla:
https://gitee.com/openeuler/kernel/issues/I4G67J?from=project-issue
CVE: NA
----------------------------------------------------------------------
Use kcalloc/kmalloc_array over kzalloc/kmalloc when we allocate array.
Checkpatch found these after we did not use our own defined allocation
wrappers.
Reviewed-by: Christoph Hellwig <hch(a)lst.de>
Signed-off-by: Kari Argillander <kari.argillander(a)gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
Signed-off-by: Yin Xiujiang <yinxiujiang(a)kylinos.cn>
---
fs/ntfs3/bitmap.c | 2 +-
fs/ntfs3/file.c | 2 +-
fs/ntfs3/frecord.c | 7 +++----
3 files changed, 5 insertions(+), 6 deletions(-)
diff --git a/fs/ntfs3/bitmap.c b/fs/ntfs3/bitmap.c
index d502bba323d0..2de05062c78b 100644
--- a/fs/ntfs3/bitmap.c
+++ b/fs/ntfs3/bitmap.c
@@ -683,7 +683,7 @@ int wnd_init(struct wnd_bitmap *wnd, struct super_block *sb, size_t nbits)
if (!wnd->bits_last)
wnd->bits_last = wbits;
- wnd->free_bits = kzalloc(wnd->nwnd * sizeof(u16), GFP_NOFS);
+ wnd->free_bits = kcalloc(wnd->nwnd, sizeof(u16), GFP_NOFS);
if (!wnd->free_bits)
return -ENOMEM;
diff --git a/fs/ntfs3/file.c b/fs/ntfs3/file.c
index 8d27c520bec5..a959f6197c99 100644
--- a/fs/ntfs3/file.c
+++ b/fs/ntfs3/file.c
@@ -900,7 +900,7 @@ static ssize_t ntfs_compress_write(struct kiocb *iocb, struct iov_iter *from)
return -EOPNOTSUPP;
}
- pages = kmalloc(pages_per_frame * sizeof(struct page *), GFP_NOFS);
+ pages = kmalloc_array(pages_per_frame, sizeof(struct page *), GFP_NOFS);
if (!pages)
return -ENOMEM;
diff --git a/fs/ntfs3/frecord.c b/fs/ntfs3/frecord.c
index 2f7d16543530..329bc76dfb09 100644
--- a/fs/ntfs3/frecord.c
+++ b/fs/ntfs3/frecord.c
@@ -2054,7 +2054,7 @@ int ni_readpage_cmpr(struct ntfs_inode *ni, struct page *page)
idx = (vbo - frame_vbo) >> PAGE_SHIFT;
pages_per_frame = frame_size >> PAGE_SHIFT;
- pages = kzalloc(pages_per_frame * sizeof(struct page *), GFP_NOFS);
+ pages = kcalloc(pages_per_frame, sizeof(struct page *), GFP_NOFS);
if (!pages) {
err = -ENOMEM;
goto out;
@@ -2137,7 +2137,7 @@ int ni_decompress_file(struct ntfs_inode *ni)
frame_bits = ni_ext_compress_bits(ni);
frame_size = 1u << frame_bits;
pages_per_frame = frame_size >> PAGE_SHIFT;
- pages = kzalloc(pages_per_frame * sizeof(struct page *), GFP_NOFS);
+ pages = kcalloc(pages_per_frame, sizeof(struct page *), GFP_NOFS);
if (!pages) {
err = -ENOMEM;
goto out;
@@ -2709,8 +2709,7 @@ int ni_write_frame(struct ntfs_inode *ni, struct page **pages,
goto out;
}
- pages_disk = kzalloc(pages_per_frame * sizeof(struct page *),
- GFP_NOFS);
+ pages_disk = kcalloc(pages_per_frame, sizeof(struct page *), GFP_NOFS);
if (!pages_disk) {
err = -ENOMEM;
goto out;
--
2.30.0
1
0
[PATCH OLK-5.10 017/107] fs/ntfs3: Remove unused including <linux/version.h>
by Yin Xiujiang 08 Dec '21
by Yin Xiujiang 08 Dec '21
08 Dec '21
From: Jiapeng Chong <jiapeng.chong(a)linux.alibaba.com>
mainline inclusion
from mainline-v5.15
commit 1263eddfea9988125a4b9608efecc8aff2c721f9
category: feature
bugzilla:
https://gitee.com/openeuler/kernel/issues/I4G67J?from=project-issue
CVE: NA
----------------------------------------------------------------------
Eliminate the follow versioncheck warning:
./fs/ntfs3/inode.c: 16 linux/version.h not needed.
Reported-by: Abaci Robot <abaci(a)linux.alibaba.com>
Fixes: 82cae269cfa9 ("fs/ntfs3: Add initialization of super block")
Signed-off-by: Jiapeng Chong <jiapeng.chong(a)linux.alibaba.com>
Reviewed-by: Kari Argillander <kari.argillander(a)gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
Signed-off-by: Yin Xiujiang <yinxiujiang(a)kylinos.cn>
---
fs/ntfs3/inode.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/fs/ntfs3/inode.c b/fs/ntfs3/inode.c
index a573c6e98cb8..ed64489edf73 100644
--- a/fs/ntfs3/inode.c
+++ b/fs/ntfs3/inode.c
@@ -13,7 +13,6 @@
#include <linux/namei.h>
#include <linux/nls.h>
#include <linux/uio.h>
-#include <linux/version.h>
#include <linux/writeback.h>
#include "debug.h"
--
2.30.0
1
0
08 Dec '21
From: "Gustavo A. R. Silva" <gustavoars(a)kernel.org>
mainline inclusion
from mainline-v5.15
commit abfeb2ee2103f07dd93b9d7b32317e26d1c8ef79
category: feature
bugzilla:
https://gitee.com/openeuler/kernel/issues/I4G67J?from=project-issue
CVE: NA
----------------------------------------------------------------------
Fix the following fallthrough warnings:
fs/ntfs3/inode.c:1792:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]
fs/ntfs3/index.c:178:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]
This helps with the ongoing efforts to globally enable
-Wimplicit-fallthrough for Clang.
Link: https://github.com/KSPP/linux/issues/115
Signed-off-by: Gustavo A. R. Silva <gustavoars(a)kernel.org>
Reviewed-by: Nathan Chancellor <nathan(a)kernel.org>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
Signed-off-by: Yin Xiujiang <yinxiujiang(a)kylinos.cn>
---
fs/ntfs3/index.c | 1 +
fs/ntfs3/inode.c | 1 +
2 files changed, 2 insertions(+)
diff --git a/fs/ntfs3/index.c b/fs/ntfs3/index.c
index 9386c551e208..189d46e2c38d 100644
--- a/fs/ntfs3/index.c
+++ b/fs/ntfs3/index.c
@@ -175,6 +175,7 @@ static inline NTFS_CMP_FUNC get_cmp_func(const struct INDEX_ROOT *root)
default:
break;
}
+ break;
default:
break;
}
diff --git a/fs/ntfs3/inode.c b/fs/ntfs3/inode.c
index bf51e294432e..a573c6e98cb8 100644
--- a/fs/ntfs3/inode.c
+++ b/fs/ntfs3/inode.c
@@ -1789,6 +1789,7 @@ int ntfs_unlink_inode(struct inode *dir, const struct dentry *dentry)
switch (err) {
case 0:
drop_nlink(inode);
+ break;
case -ENOTEMPTY:
case -ENOSPC:
case -EROFS:
--
2.30.0
1
0
08 Dec '21
From: Kari Argillander <kari.argillander(a)gmail.com>
mainline inclusion
from mainline-v5.15
commit be87e821fdb5ec8c6d404f29e118130c7879ce5b
category: feature
bugzilla:
https://gitee.com/openeuler/kernel/issues/I4G67J?from=project-issue
CVE: NA
----------------------------------------------------------------------
In one source file there is for some reason non utf8 char. But hey this
is fs development so this kind of thing might happen.
Signed-off-by: Kari Argillander <kari.argillander(a)gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
Signed-off-by: Yin Xiujiang <yinxiujiang(a)kylinos.cn>
---
fs/ntfs3/frecord.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/ntfs3/frecord.c b/fs/ntfs3/frecord.c
index c3121bf9c62f..e377d72477df 100644
--- a/fs/ntfs3/frecord.c
+++ b/fs/ntfs3/frecord.c
@@ -1784,7 +1784,7 @@ enum REPARSE_SIGN ni_parse_reparse(struct ntfs_inode *ni, struct ATTRIB *attr,
/*
* WOF - Windows Overlay Filter - used to compress files with lzx/xpress
* Unlike native NTFS file compression, the Windows Overlay Filter supports
- * only read operations. This means that it doesn�t need to sector-align each
+ * only read operations. This means that it doesn't need to sector-align each
* compressed chunk, so the compressed data can be packed more tightly together.
* If you open the file for writing, the Windows Overlay Filter just decompresses
* the entire file, turning it back into a plain file.
--
2.30.0
1
0
[PATCH OLK-5.10 014/107] fs/ntfs3: Remove unused variable cnt in ntfs_security_init()
by Yin Xiujiang 08 Dec '21
by Yin Xiujiang 08 Dec '21
08 Dec '21
From: Nathan Chancellor <nathan(a)kernel.org>
mainline inclusion
from mainline-v5.15
commit 8c01308b6d6b2bc8e9163c6a3400856fb782dee6
category: feature
bugzilla:
https://gitee.com/openeuler/kernel/issues/I4G67J?from=project-issue
CVE: NA
----------------------------------------------------------------------
Clang warns:
fs/ntfs3/fsntfs.c:1874:9: warning: variable 'cnt' set but not used
[-Wunused-but-set-variable]
size_t cnt, off;
^
1 warning generated.
It is indeed unused so remove it.
Fixes: 82cae269cfa9 ("fs/ntfs3: Add initialization of super block")
Signed-off-by: Nathan Chancellor <nathan(a)kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers(a)google.com>
Reviewed-by: Kari Argillander <kari.argillander(a)gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
Signed-off-by: Yin Xiujiang <yinxiujiang(a)kylinos.cn>
---
fs/ntfs3/fsntfs.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/fs/ntfs3/fsntfs.c b/fs/ntfs3/fsntfs.c
index 92140050fb6c..c6599c514acf 100644
--- a/fs/ntfs3/fsntfs.c
+++ b/fs/ntfs3/fsntfs.c
@@ -1871,7 +1871,7 @@ int ntfs_security_init(struct ntfs_sb_info *sbi)
struct ATTRIB *attr;
struct ATTR_LIST_ENTRY *le;
u64 sds_size;
- size_t cnt, off;
+ size_t off;
struct NTFS_DE *ne;
struct NTFS_DE_SII *sii_e;
struct ntfs_fnd *fnd_sii = NULL;
@@ -1946,7 +1946,6 @@ int ntfs_security_init(struct ntfs_sb_info *sbi)
sbi->security.next_off =
Quad2Align(sds_size - SecurityDescriptorsBlockSize);
- cnt = 0;
off = 0;
ne = NULL;
@@ -1964,8 +1963,6 @@ int ntfs_security_init(struct ntfs_sb_info *sbi)
next_id = le32_to_cpu(sii_e->sec_id) + 1;
if (next_id >= sbi->security.next_id)
sbi->security.next_id = next_id;
-
- cnt += 1;
}
sbi->security.ni = ni;
--
2.30.0
1
0
[PATCH OLK-5.10 013/107] fs/ntfs3: Fix integer overflow in multiplication
by Yin Xiujiang 08 Dec '21
by Yin Xiujiang 08 Dec '21
08 Dec '21
From: Colin Ian King <colin.king(a)canonical.com>
mainline inclusion
from mainline-v5.15
commit 71eeb6ace80be7389d942b9647765417e5b039f7
category: feature
bugzilla:
https://gitee.com/openeuler/kernel/issues/I4G67J?from=project-issue
CVE: NA
----------------------------------------------------------------------
The multiplication of the u32 data_size with a int is being performed
using 32 bit arithmetic however the results is being assigned to the
variable nbits that is a size_t (64 bit) value. Fix a potential
integer overflow by casting the u32 value to a size_t before the
multiply to use a size_t sized bit multiply operation.
Addresses-Coverity: ("Unintentional integer overflow")
Fixes: 82cae269cfa9 ("fs/ntfs3: Add initialization of super block")
Signed-off-by: Colin Ian King <colin.king(a)canonical.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
Signed-off-by: Yin Xiujiang <yinxiujiang(a)kylinos.cn>
---
fs/ntfs3/index.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/ntfs3/index.c b/fs/ntfs3/index.c
index 6aa9540ece47..9386c551e208 100644
--- a/fs/ntfs3/index.c
+++ b/fs/ntfs3/index.c
@@ -2012,7 +2012,7 @@ static int indx_shrink(struct ntfs_index *indx, struct ntfs_inode *ni,
unsigned long pos;
const unsigned long *bm = resident_data(b);
- nbits = le32_to_cpu(b->res.data_size) * 8;
+ nbits = (size_t)le32_to_cpu(b->res.data_size) * 8;
if (bit >= nbits)
return 0;
--
2.30.0
1
0
[PATCH OLK-5.10 012/107] fs/ntfs3: Add ifndef + define to all header files
by Yin Xiujiang 08 Dec '21
by Yin Xiujiang 08 Dec '21
08 Dec '21
From: Kari Argillander <kari.argillander(a)gmail.com>
mainline inclusion
from mainline-v5.15
commit 87790b65343932411af43bc9b218f086ecebd6a5
category: feature
bugzilla:
https://gitee.com/openeuler/kernel/issues/I4G67J?from=project-issue
CVE: NA
----------------------------------------------------------------------
Add guards so that compiler will only include header files once.
Signed-off-by: Kari Argillander <kari.argillander(a)gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
Signed-off-by: Yin Xiujiang <yinxiujiang(a)kylinos.cn>
---
fs/ntfs3/debug.h | 5 +++++
fs/ntfs3/ntfs.h | 3 +++
fs/ntfs3/ntfs_fs.h | 5 +++++
3 files changed, 13 insertions(+)
diff --git a/fs/ntfs3/debug.h b/fs/ntfs3/debug.h
index 15ac42185e5b..357d9f4dfba7 100644
--- a/fs/ntfs3/debug.h
+++ b/fs/ntfs3/debug.h
@@ -7,6 +7,9 @@
*/
// clang-format off
+#ifndef _LINUX_NTFS3_DEBUG_H
+#define _LINUX_NTFS3_DEBUG_H
+
#ifndef Add2Ptr
#define Add2Ptr(P, I) ((void *)((u8 *)(P) + (I)))
#define PtrOffset(B, O) ((size_t)((size_t)(O) - (size_t)(B)))
@@ -61,4 +64,6 @@ void ntfs_inode_printk(struct inode *inode, const char *fmt, ...)
#define ntfs_free(p) kfree(p)
#define ntfs_vfree(p) kvfree(p)
#define ntfs_memdup(src, len) kmemdup(src, len, GFP_NOFS)
+
+#endif /* _LINUX_NTFS3_DEBUG_H */
// clang-format on
diff --git a/fs/ntfs3/ntfs.h b/fs/ntfs3/ntfs.h
index 40398e6c39c9..16da514af124 100644
--- a/fs/ntfs3/ntfs.h
+++ b/fs/ntfs3/ntfs.h
@@ -7,6 +7,8 @@
*/
// clang-format off
+#ifndef _LINUX_NTFS3_NTFS_H
+#define _LINUX_NTFS3_NTFS_H
/* TODO:
* - Check 4K mft record and 512 bytes cluster
@@ -1235,4 +1237,5 @@ struct SID {
};
static_assert(offsetof(struct SID, SubAuthority) == 8);
+#endif /* _LINUX_NTFS3_NTFS_H */
// clang-format on
diff --git a/fs/ntfs3/ntfs_fs.h b/fs/ntfs3/ntfs_fs.h
index c8ea6dd38c21..b5da2f06f7cb 100644
--- a/fs/ntfs3/ntfs_fs.h
+++ b/fs/ntfs3/ntfs_fs.h
@@ -6,6 +6,9 @@
*/
// clang-format off
+#ifndef _LINUX_NTFS3_NTFS_FS_H
+#define _LINUX_NTFS3_NTFS_FS_H
+
#define MINUS_ONE_T ((size_t)(-1))
/* Biggest MFT / smallest cluster */
#define MAXIMUM_BYTES_PER_MFT 4096
@@ -1085,3 +1088,5 @@ static inline void le64_sub_cpu(__le64 *var, u64 val)
{
*var = cpu_to_le64(le64_to_cpu(*var) - val);
}
+
+#endif /* _LINUX_NTFS3_NTFS_FS_H */
--
2.30.0
1
0
08 Dec '21
From: Kari Argillander <kari.argillander(a)gmail.com>
mainline inclusion
from mainline-v5.15
commit 528c9b3d1edf291685151afecd741d176f527ddf
category: feature
bugzilla:
https://gitee.com/openeuler/kernel/issues/I4G67J?from=project-issue
CVE: NA
----------------------------------------------------------------------
We do not need our own implementation for this function in this
driver. It is much better to use generic one.
Signed-off-by: Kari Argillander <kari.argillander(a)gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
Signed-off-by: Yin Xiujiang <yinxiujiang(a)kylinos.cn>
---
fs/ntfs3/ntfs_fs.h | 5 -----
fs/ntfs3/run.c | 3 ++-
fs/ntfs3/super.c | 9 +++++----
3 files changed, 7 insertions(+), 10 deletions(-)
diff --git a/fs/ntfs3/ntfs_fs.h b/fs/ntfs3/ntfs_fs.h
index 0c3ac89c3115..c8ea6dd38c21 100644
--- a/fs/ntfs3/ntfs_fs.h
+++ b/fs/ntfs3/ntfs_fs.h
@@ -972,11 +972,6 @@ static inline struct buffer_head *ntfs_bread(struct super_block *sb,
return NULL;
}
-static inline bool is_power_of2(size_t v)
-{
- return v && !(v & (v - 1));
-}
-
static inline struct ntfs_inode *ntfs_i(struct inode *inode)
{
return container_of(inode, struct ntfs_inode, vfs_inode);
diff --git a/fs/ntfs3/run.c b/fs/ntfs3/run.c
index f9c362ac672e..60c64deab738 100644
--- a/fs/ntfs3/run.c
+++ b/fs/ntfs3/run.c
@@ -9,6 +9,7 @@
#include <linux/blkdev.h>
#include <linux/buffer_head.h>
#include <linux/fs.h>
+#include <linux/log2.h>
#include <linux/nls.h>
#include "debug.h"
@@ -376,7 +377,7 @@ bool run_add_entry(struct runs_tree *run, CLST vcn, CLST lcn, CLST len,
if (!used) {
bytes = 64;
} else if (used <= 16 * PAGE_SIZE) {
- if (is_power_of2(run->allocated))
+ if (is_power_of_2(run->allocated))
bytes = run->allocated << 1;
else
bytes = (size_t)1
diff --git a/fs/ntfs3/super.c b/fs/ntfs3/super.c
index 84d4f389f685..903975b7e832 100644
--- a/fs/ntfs3/super.c
+++ b/fs/ntfs3/super.c
@@ -29,6 +29,7 @@
#include <linux/exportfs.h>
#include <linux/fs.h>
#include <linux/iversion.h>
+#include <linux/log2.h>
#include <linux/module.h>
#include <linux/nls.h>
#include <linux/parser.h>
@@ -735,13 +736,13 @@ static int ntfs_init_from_boot(struct super_block *sb, u32 sector_size,
boot_sector_size = (u32)boot->bytes_per_sector[1] << 8;
if (boot->bytes_per_sector[0] || boot_sector_size < SECTOR_SIZE ||
- !is_power_of2(boot_sector_size)) {
+ !is_power_of_2(boot_sector_size)) {
goto out;
}
/* cluster size: 512, 1K, 2K, 4K, ... 2M */
sct_per_clst = true_sectors_per_clst(boot);
- if (!is_power_of2(sct_per_clst))
+ if (!is_power_of_2(sct_per_clst))
goto out;
mlcn = le64_to_cpu(boot->mft_clst);
@@ -757,14 +758,14 @@ static int ntfs_init_from_boot(struct super_block *sb, u32 sector_size,
/* Check MFT record size */
if ((boot->record_size < 0 &&
SECTOR_SIZE > (2U << (-boot->record_size))) ||
- (boot->record_size >= 0 && !is_power_of2(boot->record_size))) {
+ (boot->record_size >= 0 && !is_power_of_2(boot->record_size))) {
goto out;
}
/* Check index record size */
if ((boot->index_size < 0 &&
SECTOR_SIZE > (2U << (-boot->index_size))) ||
- (boot->index_size >= 0 && !is_power_of2(boot->index_size))) {
+ (boot->index_size >= 0 && !is_power_of_2(boot->index_size))) {
goto out;
}
--
2.30.0
1
0
08 Dec '21
From: Colin Ian King <colin.king(a)canonical.com>
mainline inclusion
from mainline-v5.15
commit f8d87ed9f0d546ac5b05e8e7d2b148d4b77599fa
category: feature
bugzilla:
https://gitee.com/openeuler/kernel/issues/I4G67J?from=project-issue
CVE: NA
----------------------------------------------------------------------
There is a spelling mistake in a ntfs_err error message. Also
fix various spelling mistakes in comments.
Signed-off-by: Colin Ian King <colin.king(a)canonical.com>
Reviewed-by: Kari Argillander <kari.argillander(a)gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
Signed-off-by: Yin Xiujiang <yinxiujiang(a)kylinos.cn>
---
fs/ntfs3/debug.h | 2 +-
fs/ntfs3/lib/decompress_common.c | 2 +-
fs/ntfs3/run.c | 2 +-
fs/ntfs3/super.c | 4 ++--
fs/ntfs3/upcase.c | 2 +-
5 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/fs/ntfs3/debug.h b/fs/ntfs3/debug.h
index dfaa4c79dc6d..15ac42185e5b 100644
--- a/fs/ntfs3/debug.h
+++ b/fs/ntfs3/debug.h
@@ -3,7 +3,7 @@
*
* Copyright (C) 2019-2021 Paragon Software GmbH, All rights reserved.
*
- * useful functions for debuging
+ * useful functions for debugging
*/
// clang-format off
diff --git a/fs/ntfs3/lib/decompress_common.c b/fs/ntfs3/lib/decompress_common.c
index 83c9e93aea77..850d8e8c8f1f 100644
--- a/fs/ntfs3/lib/decompress_common.c
+++ b/fs/ntfs3/lib/decompress_common.c
@@ -292,7 +292,7 @@ int make_huffman_decode_table(u16 decode_table[], const u32 num_syms,
* of as simply the root of the tree. The
* representation of these internal nodes is
* simply the index of the left child combined
- * with the special bits 0xC000 to distingush
+ * with the special bits 0xC000 to distinguish
* the entry from direct mapping and leaf node
* entries.
*/
diff --git a/fs/ntfs3/run.c b/fs/ntfs3/run.c
index 5cdf6efe67e0..f9c362ac672e 100644
--- a/fs/ntfs3/run.c
+++ b/fs/ntfs3/run.c
@@ -949,7 +949,7 @@ int run_unpack(struct runs_tree *run, struct ntfs_sb_info *sbi, CLST ino,
if (next_vcn > 0x100000000ull || (lcn + len) > 0x100000000ull) {
ntfs_err(
sbi->sb,
- "This driver is compiled whitout CONFIG_NTFS3_64BIT_CLUSTER (like windows driver).\n"
+ "This driver is compiled without CONFIG_NTFS3_64BIT_CLUSTER (like windows driver).\n"
"Volume contains 64 bits run: vcn %llx, lcn %llx, len %llx.\n"
"Activate CONFIG_NTFS3_64BIT_CLUSTER to process this case",
vcn64, lcn, len);
diff --git a/fs/ntfs3/super.c b/fs/ntfs3/super.c
index 6be13e256c1a..84d4f389f685 100644
--- a/fs/ntfs3/super.c
+++ b/fs/ntfs3/super.c
@@ -124,7 +124,7 @@ void ntfs_inode_printk(struct inode *inode, const char *fmt, ...)
/*
* Shared memory struct.
*
- * on-disk ntfs's upcase table is created by ntfs formater
+ * on-disk ntfs's upcase table is created by ntfs formatter
* 'upcase' table is 128K bytes of memory
* we should read it into memory when mounting
* Several ntfs volumes likely use the same 'upcase' table
@@ -1208,7 +1208,7 @@ static int ntfs_fill_super(struct super_block *sb, void *data, int silent)
sbi->def_entries = 1;
done = sizeof(struct ATTR_DEF_ENTRY);
sbi->reparse.max_size = MAXIMUM_REPARSE_DATA_BUFFER_SIZE;
- sbi->ea_max_size = 0x10000; /* default formater value */
+ sbi->ea_max_size = 0x10000; /* default formatter value */
while (done + sizeof(struct ATTR_DEF_ENTRY) <= bytes) {
u32 t32 = le32_to_cpu(t->type);
diff --git a/fs/ntfs3/upcase.c b/fs/ntfs3/upcase.c
index 9617382aca64..b53943538f9f 100644
--- a/fs/ntfs3/upcase.c
+++ b/fs/ntfs3/upcase.c
@@ -27,7 +27,7 @@ static inline u16 upcase_unicode_char(const u16 *upcase, u16 chr)
/*
* Thanks Kari Argillander <kari.argillander(a)gmail.com> for idea and implementation 'bothcase'
*
- * Straigth way to compare names:
+ * Straight way to compare names:
* - case insensitive
* - if name equals and 'bothcases' then
* - case sensitive
--
2.30.0
1
0
[PATCH OLK-5.10 009/107] fs/ntfs3: Add NTFS3 in fs/Kconfig and fs/Makefile
by Yin Xiujiang 08 Dec '21
by Yin Xiujiang 08 Dec '21
08 Dec '21
From: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
mainline inclusion
from mainline-v5.15
commit 6e5be40d32fb1907285277c02e74493ed43d77fe
category: feature
bugzilla:
https://gitee.com/openeuler/kernel/issues/I4G67J?from=project-issue
CVE: NA
----------------------------------------------------------------------
This adds NTFS3 in fs/Kconfig and fs/Makefile
Signed-off-by: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
Signed-off-by: Yin Xiujiang <yinxiujiang(a)kylinos.cn>
---
fs/Kconfig | 1 +
fs/Makefile | 1 +
2 files changed, 2 insertions(+)
diff --git a/fs/Kconfig b/fs/Kconfig
index 3cc647e00f3c..225088d505f4 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -145,6 +145,7 @@ menu "DOS/FAT/EXFAT/NT Filesystems"
source "fs/fat/Kconfig"
source "fs/exfat/Kconfig"
source "fs/ntfs/Kconfig"
+source "fs/ntfs3/Kconfig"
endmenu
endif # BLOCK
diff --git a/fs/Makefile b/fs/Makefile
index fec76c1b4e06..73acb48ce6bc 100644
--- a/fs/Makefile
+++ b/fs/Makefile
@@ -102,6 +102,7 @@ obj-$(CONFIG_SYSV_FS) += sysv/
obj-$(CONFIG_CIFS) += cifs/
obj-$(CONFIG_HPFS_FS) += hpfs/
obj-$(CONFIG_NTFS_FS) += ntfs/
+obj-$(CONFIG_NTFS3_FS) += ntfs3/
obj-$(CONFIG_UFS_FS) += ufs/
obj-$(CONFIG_EFS_FS) += efs/
obj-$(CONFIG_JFFS2_FS) += jffs2/
--
2.30.0
1
0
08 Dec '21
From: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
mainline inclusion
from mainline-v5.15
commit 12dad495eaab95e0bb784c43869073617c513ea4
category: feature
bugzilla:
https://gitee.com/openeuler/kernel/issues/I4G67J?from=project-issue
CVE: NA
----------------------------------------------------------------------
This adds Kconfig, Makefile and doc
Signed-off-by: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
Signed-off-by: Yin Xiujiang <yinxiujiang(a)kylinos.cn>
---
Documentation/filesystems/index.rst | 1 +
Documentation/filesystems/ntfs3.rst | 106 ++++++++++++++++++++++++++++
fs/ntfs3/Kconfig | 46 ++++++++++++
fs/ntfs3/Makefile | 36 ++++++++++
4 files changed, 189 insertions(+)
create mode 100644 Documentation/filesystems/ntfs3.rst
create mode 100644 fs/ntfs3/Kconfig
create mode 100644 fs/ntfs3/Makefile
diff --git a/Documentation/filesystems/index.rst b/Documentation/filesystems/index.rst
index 98f59a864242..757684537248 100644
--- a/Documentation/filesystems/index.rst
+++ b/Documentation/filesystems/index.rst
@@ -97,6 +97,7 @@ Documentation for filesystem implementations.
nilfs2
nfs/index
ntfs
+ ntfs3
ocfs2
ocfs2-online-filecheck
omfs
diff --git a/Documentation/filesystems/ntfs3.rst b/Documentation/filesystems/ntfs3.rst
new file mode 100644
index 000000000000..ffe9ea0c1499
--- /dev/null
+++ b/Documentation/filesystems/ntfs3.rst
@@ -0,0 +1,106 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+=====
+NTFS3
+=====
+
+
+Summary and Features
+====================
+
+NTFS3 is fully functional NTFS Read-Write driver. The driver works with
+NTFS versions up to 3.1, normal/compressed/sparse files
+and journal replaying. File system type to use on mount is 'ntfs3'.
+
+- This driver implements NTFS read/write support for normal, sparse and
+ compressed files.
+- Supports native journal replaying;
+- Supports extended attributes
+ Predefined extended attributes:
+ - 'system.ntfs_security' gets/sets security
+ descriptor (SECURITY_DESCRIPTOR_RELATIVE)
+ - 'system.ntfs_attrib' gets/sets ntfs file/dir attributes.
+ Note: applied to empty files, this allows to switch type between
+ sparse(0x200), compressed(0x800) and normal;
+- Supports NFS export of mounted NTFS volumes.
+
+Mount Options
+=============
+
+The list below describes mount options supported by NTFS3 driver in addition to
+generic ones.
+
+===============================================================================
+
+nls=name This option informs the driver how to interpret path
+ strings and translate them to Unicode and back. If
+ this option is not set, the default codepage will be
+ used (CONFIG_NLS_DEFAULT).
+ Examples:
+ 'nls=utf8'
+
+uid=
+gid=
+umask= Controls the default permissions for files/directories created
+ after the NTFS volume is mounted.
+
+fmask=
+dmask= Instead of specifying umask which applies both to
+ files and directories, fmask applies only to files and
+ dmask only to directories.
+
+nohidden Files with the Windows-specific HIDDEN (FILE_ATTRIBUTE_HIDDEN)
+ attribute will not be shown under Linux.
+
+sys_immutable Files with the Windows-specific SYSTEM
+ (FILE_ATTRIBUTE_SYSTEM) attribute will be marked as system
+ immutable files.
+
+discard Enable support of the TRIM command for improved performance
+ on delete operations, which is recommended for use with the
+ solid-state drives (SSD).
+
+force Forces the driver to mount partitions even if 'dirty' flag
+ (volume dirty) is set. Not recommended for use.
+
+sparse Create new files as "sparse".
+
+showmeta Use this parameter to show all meta-files (System Files) on
+ a mounted NTFS partition.
+ By default, all meta-files are hidden.
+
+prealloc Preallocate space for files excessively when file size is
+ increasing on writes. Decreases fragmentation in case of
+ parallel write operations to different files.
+
+no_acs_rules "No access rules" mount option sets access rights for
+ files/folders to 777 and owner/group to root. This mount
+ option absorbs all other permissions:
+ - permissions change for files/folders will be reported
+ as successful, but they will remain 777;
+ - owner/group change will be reported as successful, but
+ they will stay as root
+
+acl Support POSIX ACLs (Access Control Lists). Effective if
+ supported by Kernel. Not to be confused with NTFS ACLs.
+ The option specified as acl enables support for POSIX ACLs.
+
+noatime All files and directories will not update their last access
+ time attribute if a partition is mounted with this parameter.
+ This option can speed up file system operation.
+
+===============================================================================
+
+ToDo list
+=========
+
+- Full journaling support (currently journal replaying is supported) over JBD.
+
+
+References
+==========
+https://www.paragon-software.com/home/ntfs-linux-professional/
+ - Commercial version of the NTFS driver for Linux.
+
+almaz.alexandrovich(a)paragon-software.com
+ - Direct e-mail address for feedback and requests on the NTFS3 implementation.
diff --git a/fs/ntfs3/Kconfig b/fs/ntfs3/Kconfig
new file mode 100644
index 000000000000..6e4cbc48ab8e
--- /dev/null
+++ b/fs/ntfs3/Kconfig
@@ -0,0 +1,46 @@
+# SPDX-License-Identifier: GPL-2.0-only
+config NTFS3_FS
+ tristate "NTFS Read-Write file system support"
+ select NLS
+ help
+ Windows OS native file system (NTFS) support up to NTFS version 3.1.
+
+ Y or M enables the NTFS3 driver with full features enabled (read,
+ write, journal replaying, sparse/compressed files support).
+ File system type to use on mount is "ntfs3". Module name (M option)
+ is also "ntfs3".
+
+ Documentation: <file:Documentation/filesystems/ntfs3.rst>
+
+config NTFS3_64BIT_CLUSTER
+ bool "64 bits per NTFS clusters"
+ depends on NTFS3_FS && 64BIT
+ help
+ Windows implementation of ntfs.sys uses 32 bits per clusters.
+ If activated 64 bits per clusters you will be able to use 4k cluster
+ for 16T+ volumes. Windows will not be able to mount such volumes.
+
+ It is recommended to say N here.
+
+config NTFS3_LZX_XPRESS
+ bool "activate support of external compressions lzx/xpress"
+ depends on NTFS3_FS
+ help
+ In Windows 10 one can use command "compact" to compress any files.
+ 4 possible variants of compression are: xpress4k, xpress8k, xpress16k and lzx.
+ If activated you will be able to read such files correctly.
+
+ It is recommended to say Y here.
+
+config NTFS3_FS_POSIX_ACL
+ bool "NTFS POSIX Access Control Lists"
+ depends on NTFS3_FS
+ select FS_POSIX_ACL
+ help
+ POSIX Access Control Lists (ACLs) support additional access rights
+ for users and groups beyond the standard owner/group/world scheme,
+ and this option selects support for ACLs specifically for ntfs
+ filesystems.
+ NOTE: this is linux only feature. Windows will ignore these ACLs.
+
+ If you don't know what Access Control Lists are, say N.
diff --git a/fs/ntfs3/Makefile b/fs/ntfs3/Makefile
new file mode 100644
index 000000000000..279701b62bbe
--- /dev/null
+++ b/fs/ntfs3/Makefile
@@ -0,0 +1,36 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for the ntfs3 filesystem support.
+#
+
+# to check robot warnings
+ccflags-y += -Wint-to-pointer-cast \
+ $(call cc-option,-Wunused-but-set-variable,-Wunused-const-variable) \
+ $(call cc-option,-Wold-style-declaration,-Wout-of-line-declaration)
+
+obj-$(CONFIG_NTFS3_FS) += ntfs3.o
+
+ntfs3-y := attrib.o \
+ attrlist.o \
+ bitfunc.o \
+ bitmap.o \
+ dir.o \
+ fsntfs.o \
+ frecord.o \
+ file.o \
+ fslog.o \
+ inode.o \
+ index.o \
+ lznt.o \
+ namei.o \
+ record.o \
+ run.o \
+ super.o \
+ upcase.o \
+ xattr.o
+
+ntfs3-$(CONFIG_NTFS3_LZX_XPRESS) += $(addprefix lib/,\
+ decompress_common.o \
+ lzx_decompress.o \
+ xpress_decompress.o \
+ )
\ No newline at end of file
--
2.30.0
1
0
From: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
mainline inclusion
from mainline-v5.15
commit b46acd6a6a627d876898e1c84d3f84902264b445
category: feature
bugzilla:
https://gitee.com/openeuler/kernel/issues/I4G67J?from=project-issue
CVE: NA
----------------------------------------------------------------------
This adds NTFS journal
Signed-off-by: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
Signed-off-by: Yin Xiujiang <yinxiujiang(a)kylinos.cn>
---
fs/ntfs3/fslog.c | 5182 ++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 5182 insertions(+)
create mode 100644 fs/ntfs3/fslog.c
diff --git a/fs/ntfs3/fslog.c b/fs/ntfs3/fslog.c
new file mode 100644
index 000000000000..397ba6a956e7
--- /dev/null
+++ b/fs/ntfs3/fslog.c
@@ -0,0 +1,5182 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ *
+ * Copyright (C) 2019-2021 Paragon Software GmbH, All rights reserved.
+ *
+ */
+
+#include <linux/blkdev.h>
+#include <linux/buffer_head.h>
+#include <linux/fs.h>
+#include <linux/hash.h>
+#include <linux/nls.h>
+#include <linux/random.h>
+#include <linux/ratelimit.h>
+#include <linux/slab.h>
+
+#include "debug.h"
+#include "ntfs.h"
+#include "ntfs_fs.h"
+
+/*
+ * LOG FILE structs
+ */
+
+// clang-format off
+
+#define MaxLogFileSize 0x100000000ull
+#define DefaultLogPageSize 4096
+#define MinLogRecordPages 0x30
+
+struct RESTART_HDR {
+ struct NTFS_RECORD_HEADER rhdr; // 'RSTR'
+ __le32 sys_page_size; // 0x10: Page size of the system which initialized the log
+ __le32 page_size; // 0x14: Log page size used for this log file
+ __le16 ra_off; // 0x18:
+ __le16 minor_ver; // 0x1A:
+ __le16 major_ver; // 0x1C:
+ __le16 fixups[];
+};
+
+#define LFS_NO_CLIENT 0xffff
+#define LFS_NO_CLIENT_LE cpu_to_le16(0xffff)
+
+struct CLIENT_REC {
+ __le64 oldest_lsn;
+ __le64 restart_lsn; // 0x08:
+ __le16 prev_client; // 0x10:
+ __le16 next_client; // 0x12:
+ __le16 seq_num; // 0x14:
+ u8 align[6]; // 0x16
+ __le32 name_bytes; // 0x1C: in bytes
+ __le16 name[32]; // 0x20: name of client
+};
+
+static_assert(sizeof(struct CLIENT_REC) == 0x60);
+
+/* Two copies of these will exist at the beginning of the log file */
+struct RESTART_AREA {
+ __le64 current_lsn; // 0x00: Current logical end of log file
+ __le16 log_clients; // 0x08: Maximum number of clients
+ __le16 client_idx[2]; // 0x0A: free/use index into the client record arrays
+ __le16 flags; // 0x0E: See RESTART_SINGLE_PAGE_IO
+ __le32 seq_num_bits; // 0x10: the number of bits in sequence number.
+ __le16 ra_len; // 0x14:
+ __le16 client_off; // 0x16:
+ __le64 l_size; // 0x18: Usable log file size.
+ __le32 last_lsn_data_len; // 0x20:
+ __le16 rec_hdr_len; // 0x24: log page data offset
+ __le16 data_off; // 0x26: log page data length
+ __le32 open_log_count; // 0x28:
+ __le32 align[5]; // 0x2C:
+ struct CLIENT_REC clients[]; // 0x40:
+};
+
+struct LOG_REC_HDR {
+ __le16 redo_op; // 0x00: NTFS_LOG_OPERATION
+ __le16 undo_op; // 0x02: NTFS_LOG_OPERATION
+ __le16 redo_off; // 0x04: Offset to Redo record
+ __le16 redo_len; // 0x06: Redo length
+ __le16 undo_off; // 0x08: Offset to Undo record
+ __le16 undo_len; // 0x0A: Undo length
+ __le16 target_attr; // 0x0C:
+ __le16 lcns_follow; // 0x0E:
+ __le16 record_off; // 0x10:
+ __le16 attr_off; // 0x12:
+ __le16 cluster_off; // 0x14:
+ __le16 reserved; // 0x16:
+ __le64 target_vcn; // 0x18:
+ __le64 page_lcns[]; // 0x20:
+};
+
+static_assert(sizeof(struct LOG_REC_HDR) == 0x20);
+
+#define RESTART_ENTRY_ALLOCATED 0xFFFFFFFF
+#define RESTART_ENTRY_ALLOCATED_LE cpu_to_le32(0xFFFFFFFF)
+
+struct RESTART_TABLE {
+ __le16 size; // 0x00: In bytes
+ __le16 used; // 0x02: entries
+ __le16 total; // 0x04: entries
+ __le16 res[3]; // 0x06:
+ __le32 free_goal; // 0x0C:
+ __le32 first_free; // 0x10
+ __le32 last_free; // 0x14
+
+};
+
+static_assert(sizeof(struct RESTART_TABLE) == 0x18);
+
+struct ATTR_NAME_ENTRY {
+ __le16 off; // offset in the Open attribute Table
+ __le16 name_bytes;
+ __le16 name[];
+};
+
+struct OPEN_ATTR_ENRTY {
+ __le32 next; // 0x00: RESTART_ENTRY_ALLOCATED if allocated
+ __le32 bytes_per_index; // 0x04:
+ enum ATTR_TYPE type; // 0x08:
+ u8 is_dirty_pages; // 0x0C:
+ u8 is_attr_name; // 0x0B: Faked field to manage 'ptr'
+ u8 name_len; // 0x0C: Faked field to manage 'ptr'
+ u8 res;
+ struct MFT_REF ref; // 0x10: File Reference of file containing attribute
+ __le64 open_record_lsn; // 0x18:
+ void *ptr; // 0x20:
+};
+
+/* 32 bit version of 'struct OPEN_ATTR_ENRTY' */
+struct OPEN_ATTR_ENRTY_32 {
+ __le32 next; // 0x00: RESTART_ENTRY_ALLOCATED if allocated
+ __le32 ptr; // 0x04:
+ struct MFT_REF ref; // 0x08:
+ __le64 open_record_lsn; // 0x10:
+ u8 is_dirty_pages; // 0x18:
+ u8 is_attr_name; // 0x19
+ u8 res1[2];
+ enum ATTR_TYPE type; // 0x1C:
+ u8 name_len; // 0x20: in wchar
+ u8 res2[3];
+ __le32 AttributeName; // 0x24:
+ __le32 bytes_per_index; // 0x28:
+};
+
+#define SIZEOF_OPENATTRIBUTEENTRY0 0x2c
+// static_assert( 0x2C == sizeof(struct OPEN_ATTR_ENRTY_32) );
+static_assert(sizeof(struct OPEN_ATTR_ENRTY) < SIZEOF_OPENATTRIBUTEENTRY0);
+
+/*
+ * One entry exists in the Dirty Pages Table for each page which is dirty at the
+ * time the Restart Area is written
+ */
+struct DIR_PAGE_ENTRY {
+ __le32 next; // 0x00: RESTART_ENTRY_ALLOCATED if allocated
+ __le32 target_attr; // 0x04: Index into the Open attribute Table
+ __le32 transfer_len; // 0x08:
+ __le32 lcns_follow; // 0x0C:
+ __le64 vcn; // 0x10: Vcn of dirty page
+ __le64 oldest_lsn; // 0x18:
+ __le64 page_lcns[]; // 0x20:
+};
+
+static_assert(sizeof(struct DIR_PAGE_ENTRY) == 0x20);
+
+/* 32 bit version of 'struct DIR_PAGE_ENTRY' */
+struct DIR_PAGE_ENTRY_32 {
+ __le32 next; // 0x00: RESTART_ENTRY_ALLOCATED if allocated
+ __le32 target_attr; // 0x04: Index into the Open attribute Table
+ __le32 transfer_len; // 0x08:
+ __le32 lcns_follow; // 0x0C:
+ __le32 reserved; // 0x10:
+ __le32 vcn_low; // 0x14: Vcn of dirty page
+ __le32 vcn_hi; // 0x18: Vcn of dirty page
+ __le32 oldest_lsn_low; // 0x1C:
+ __le32 oldest_lsn_hi; // 0x1C:
+ __le32 page_lcns_low; // 0x24:
+ __le32 page_lcns_hi; // 0x24:
+};
+
+static_assert(offsetof(struct DIR_PAGE_ENTRY_32, vcn_low) == 0x14);
+static_assert(sizeof(struct DIR_PAGE_ENTRY_32) == 0x2c);
+
+enum transact_state {
+ TransactionUninitialized = 0,
+ TransactionActive,
+ TransactionPrepared,
+ TransactionCommitted
+};
+
+struct TRANSACTION_ENTRY {
+ __le32 next; // 0x00: RESTART_ENTRY_ALLOCATED if allocated
+ u8 transact_state; // 0x04:
+ u8 reserved[3]; // 0x05:
+ __le64 first_lsn; // 0x08:
+ __le64 prev_lsn; // 0x10:
+ __le64 undo_next_lsn; // 0x18:
+ __le32 undo_records; // 0x20: Number of undo log records pending abort
+ __le32 undo_len; // 0x24: Total undo size
+};
+
+static_assert(sizeof(struct TRANSACTION_ENTRY) == 0x28);
+
+struct NTFS_RESTART {
+ __le32 major_ver; // 0x00:
+ __le32 minor_ver; // 0x04:
+ __le64 check_point_start; // 0x08:
+ __le64 open_attr_table_lsn; // 0x10:
+ __le64 attr_names_lsn; // 0x18:
+ __le64 dirty_pages_table_lsn; // 0x20:
+ __le64 transact_table_lsn; // 0x28:
+ __le32 open_attr_len; // 0x30: In bytes
+ __le32 attr_names_len; // 0x34: In bytes
+ __le32 dirty_pages_len; // 0x38: In bytes
+ __le32 transact_table_len; // 0x3C: In bytes
+};
+
+static_assert(sizeof(struct NTFS_RESTART) == 0x40);
+
+struct NEW_ATTRIBUTE_SIZES {
+ __le64 alloc_size;
+ __le64 valid_size;
+ __le64 data_size;
+ __le64 total_size;
+};
+
+struct BITMAP_RANGE {
+ __le32 bitmap_off;
+ __le32 bits;
+};
+
+struct LCN_RANGE {
+ __le64 lcn;
+ __le64 len;
+};
+
+/* The following type defines the different log record types */
+#define LfsClientRecord cpu_to_le32(1)
+#define LfsClientRestart cpu_to_le32(2)
+
+/* This is used to uniquely identify a client for a particular log file */
+struct CLIENT_ID {
+ __le16 seq_num;
+ __le16 client_idx;
+};
+
+/* This is the header that begins every Log Record in the log file */
+struct LFS_RECORD_HDR {
+ __le64 this_lsn; // 0x00:
+ __le64 client_prev_lsn; // 0x08:
+ __le64 client_undo_next_lsn; // 0x10:
+ __le32 client_data_len; // 0x18:
+ struct CLIENT_ID client; // 0x1C: Owner of this log record
+ __le32 record_type; // 0x20: LfsClientRecord or LfsClientRestart
+ __le32 transact_id; // 0x24:
+ __le16 flags; // 0x28: LOG_RECORD_MULTI_PAGE
+ u8 align[6]; // 0x2A:
+};
+
+#define LOG_RECORD_MULTI_PAGE cpu_to_le16(1)
+
+static_assert(sizeof(struct LFS_RECORD_HDR) == 0x30);
+
+struct LFS_RECORD {
+ __le16 next_record_off; // 0x00: Offset of the free space in the page
+ u8 align[6]; // 0x02:
+ __le64 last_end_lsn; // 0x08: lsn for the last log record which ends on the page
+};
+
+static_assert(sizeof(struct LFS_RECORD) == 0x10);
+
+struct RECORD_PAGE_HDR {
+ struct NTFS_RECORD_HEADER rhdr; // 'RCRD'
+ __le32 rflags; // 0x10: See LOG_PAGE_LOG_RECORD_END
+ __le16 page_count; // 0x14:
+ __le16 page_pos; // 0x16:
+ struct LFS_RECORD record_hdr; // 0x18
+ __le16 fixups[10]; // 0x28
+ __le32 file_off; // 0x3c: used when major version >= 2
+};
+
+// clang-format on
+
+// Page contains the end of a log record
+#define LOG_PAGE_LOG_RECORD_END cpu_to_le32(0x00000001)
+
+static inline bool is_log_record_end(const struct RECORD_PAGE_HDR *hdr)
+{
+ return hdr->rflags & LOG_PAGE_LOG_RECORD_END;
+}
+
+static_assert(offsetof(struct RECORD_PAGE_HDR, file_off) == 0x3c);
+
+/*
+ * END of NTFS LOG structures
+ */
+
+/* Define some tuning parameters to keep the restart tables a reasonable size */
+#define INITIAL_NUMBER_TRANSACTIONS 5
+
+enum NTFS_LOG_OPERATION {
+
+ Noop = 0x00,
+ CompensationLogRecord = 0x01,
+ InitializeFileRecordSegment = 0x02,
+ DeallocateFileRecordSegment = 0x03,
+ WriteEndOfFileRecordSegment = 0x04,
+ CreateAttribute = 0x05,
+ DeleteAttribute = 0x06,
+ UpdateResidentValue = 0x07,
+ UpdateNonresidentValue = 0x08,
+ UpdateMappingPairs = 0x09,
+ DeleteDirtyClusters = 0x0A,
+ SetNewAttributeSizes = 0x0B,
+ AddIndexEntryRoot = 0x0C,
+ DeleteIndexEntryRoot = 0x0D,
+ AddIndexEntryAllocation = 0x0E,
+ DeleteIndexEntryAllocation = 0x0F,
+ WriteEndOfIndexBuffer = 0x10,
+ SetIndexEntryVcnRoot = 0x11,
+ SetIndexEntryVcnAllocation = 0x12,
+ UpdateFileNameRoot = 0x13,
+ UpdateFileNameAllocation = 0x14,
+ SetBitsInNonresidentBitMap = 0x15,
+ ClearBitsInNonresidentBitMap = 0x16,
+ HotFix = 0x17,
+ EndTopLevelAction = 0x18,
+ PrepareTransaction = 0x19,
+ CommitTransaction = 0x1A,
+ ForgetTransaction = 0x1B,
+ OpenNonresidentAttribute = 0x1C,
+ OpenAttributeTableDump = 0x1D,
+ AttributeNamesDump = 0x1E,
+ DirtyPageTableDump = 0x1F,
+ TransactionTableDump = 0x20,
+ UpdateRecordDataRoot = 0x21,
+ UpdateRecordDataAllocation = 0x22,
+
+ UpdateRelativeDataInIndex =
+ 0x23, // NtOfsRestartUpdateRelativeDataInIndex
+ UpdateRelativeDataInIndex2 = 0x24,
+ ZeroEndOfFileRecord = 0x25,
+};
+
+/*
+ * Array for log records which require a target attribute
+ * A true indicates that the corresponding restart operation requires a target attribute
+ */
+static const u8 AttributeRequired[] = {
+ 0xFC, 0xFB, 0xFF, 0x10, 0x06,
+};
+
+static inline bool is_target_required(u16 op)
+{
+ bool ret = op <= UpdateRecordDataAllocation &&
+ (AttributeRequired[op >> 3] >> (op & 7) & 1);
+ return ret;
+}
+
+static inline bool can_skip_action(enum NTFS_LOG_OPERATION op)
+{
+ switch (op) {
+ case Noop:
+ case DeleteDirtyClusters:
+ case HotFix:
+ case EndTopLevelAction:
+ case PrepareTransaction:
+ case CommitTransaction:
+ case ForgetTransaction:
+ case CompensationLogRecord:
+ case OpenNonresidentAttribute:
+ case OpenAttributeTableDump:
+ case AttributeNamesDump:
+ case DirtyPageTableDump:
+ case TransactionTableDump:
+ return true;
+ default:
+ return false;
+ }
+}
+
+enum { lcb_ctx_undo_next, lcb_ctx_prev, lcb_ctx_next };
+
+/* bytes per restart table */
+static inline u32 bytes_per_rt(const struct RESTART_TABLE *rt)
+{
+ return le16_to_cpu(rt->used) * le16_to_cpu(rt->size) +
+ sizeof(struct RESTART_TABLE);
+}
+
+/* log record length */
+static inline u32 lrh_length(const struct LOG_REC_HDR *lr)
+{
+ u16 t16 = le16_to_cpu(lr->lcns_follow);
+
+ return struct_size(lr, page_lcns, max_t(u16, 1, t16));
+}
+
+struct lcb {
+ struct LFS_RECORD_HDR *lrh; // Log record header of the current lsn
+ struct LOG_REC_HDR *log_rec;
+ u32 ctx_mode; // lcb_ctx_undo_next/lcb_ctx_prev/lcb_ctx_next
+ struct CLIENT_ID client;
+ bool alloc; // if true the we should deallocate 'log_rec'
+};
+
+static void lcb_put(struct lcb *lcb)
+{
+ if (lcb->alloc)
+ ntfs_free(lcb->log_rec);
+ ntfs_free(lcb->lrh);
+ ntfs_free(lcb);
+}
+
+/*
+ * oldest_client_lsn
+ *
+ * find the oldest lsn from active clients.
+ */
+static inline void oldest_client_lsn(const struct CLIENT_REC *ca,
+ __le16 next_client, u64 *oldest_lsn)
+{
+ while (next_client != LFS_NO_CLIENT_LE) {
+ const struct CLIENT_REC *cr = ca + le16_to_cpu(next_client);
+ u64 lsn = le64_to_cpu(cr->oldest_lsn);
+
+ /* ignore this block if it's oldest lsn is 0 */
+ if (lsn && lsn < *oldest_lsn)
+ *oldest_lsn = lsn;
+
+ next_client = cr->next_client;
+ }
+}
+
+static inline bool is_rst_page_hdr_valid(u32 file_off,
+ const struct RESTART_HDR *rhdr)
+{
+ u32 sys_page = le32_to_cpu(rhdr->sys_page_size);
+ u32 page_size = le32_to_cpu(rhdr->page_size);
+ u32 end_usa;
+ u16 ro;
+
+ if (sys_page < SECTOR_SIZE || page_size < SECTOR_SIZE ||
+ sys_page & (sys_page - 1) || page_size & (page_size - 1)) {
+ return false;
+ }
+
+ /* Check that if the file offset isn't 0, it is the system page size */
+ if (file_off && file_off != sys_page)
+ return false;
+
+ /* Check support version 1.1+ */
+ if (le16_to_cpu(rhdr->major_ver) <= 1 && !rhdr->minor_ver)
+ return false;
+
+ if (le16_to_cpu(rhdr->major_ver) > 2)
+ return false;
+
+ ro = le16_to_cpu(rhdr->ra_off);
+ if (!IsQuadAligned(ro) || ro > sys_page)
+ return false;
+
+ end_usa = ((sys_page >> SECTOR_SHIFT) + 1) * sizeof(short);
+ end_usa += le16_to_cpu(rhdr->rhdr.fix_off);
+
+ if (ro < end_usa)
+ return false;
+
+ return true;
+}
+
+static inline bool is_rst_area_valid(const struct RESTART_HDR *rhdr)
+{
+ const struct RESTART_AREA *ra;
+ u16 cl, fl, ul;
+ u32 off, l_size, file_dat_bits, file_size_round;
+ u16 ro = le16_to_cpu(rhdr->ra_off);
+ u32 sys_page = le32_to_cpu(rhdr->sys_page_size);
+
+ if (ro + offsetof(struct RESTART_AREA, l_size) >
+ SECTOR_SIZE - sizeof(short))
+ return false;
+
+ ra = Add2Ptr(rhdr, ro);
+ cl = le16_to_cpu(ra->log_clients);
+
+ if (cl > 1)
+ return false;
+
+ off = le16_to_cpu(ra->client_off);
+
+ if (!IsQuadAligned(off) || ro + off > SECTOR_SIZE - sizeof(short))
+ return false;
+
+ off += cl * sizeof(struct CLIENT_REC);
+
+ if (off > sys_page)
+ return false;
+
+ /*
+ * Check the restart length field and whether the entire
+ * restart area is contained that length
+ */
+ if (le16_to_cpu(rhdr->ra_off) + le16_to_cpu(ra->ra_len) > sys_page ||
+ off > le16_to_cpu(ra->ra_len)) {
+ return false;
+ }
+
+ /*
+ * As a final check make sure that the use list and the free list
+ * are either empty or point to a valid client
+ */
+ fl = le16_to_cpu(ra->client_idx[0]);
+ ul = le16_to_cpu(ra->client_idx[1]);
+ if ((fl != LFS_NO_CLIENT && fl >= cl) ||
+ (ul != LFS_NO_CLIENT && ul >= cl))
+ return false;
+
+ /* Make sure the sequence number bits match the log file size */
+ l_size = le64_to_cpu(ra->l_size);
+
+ file_dat_bits = sizeof(u64) * 8 - le32_to_cpu(ra->seq_num_bits);
+ file_size_round = 1u << (file_dat_bits + 3);
+ if (file_size_round != l_size &&
+ (file_size_round < l_size || (file_size_round / 2) > l_size)) {
+ return false;
+ }
+
+ /* The log page data offset and record header length must be quad-aligned */
+ if (!IsQuadAligned(le16_to_cpu(ra->data_off)) ||
+ !IsQuadAligned(le16_to_cpu(ra->rec_hdr_len)))
+ return false;
+
+ return true;
+}
+
+static inline bool is_client_area_valid(const struct RESTART_HDR *rhdr,
+ bool usa_error)
+{
+ u16 ro = le16_to_cpu(rhdr->ra_off);
+ const struct RESTART_AREA *ra = Add2Ptr(rhdr, ro);
+ u16 ra_len = le16_to_cpu(ra->ra_len);
+ const struct CLIENT_REC *ca;
+ u32 i;
+
+ if (usa_error && ra_len + ro > SECTOR_SIZE - sizeof(short))
+ return false;
+
+ /* Find the start of the client array */
+ ca = Add2Ptr(ra, le16_to_cpu(ra->client_off));
+
+ /*
+ * Start with the free list
+ * Check that all the clients are valid and that there isn't a cycle
+ * Do the in-use list on the second pass
+ */
+ for (i = 0; i < 2; i++) {
+ u16 client_idx = le16_to_cpu(ra->client_idx[i]);
+ bool first_client = true;
+ u16 clients = le16_to_cpu(ra->log_clients);
+
+ while (client_idx != LFS_NO_CLIENT) {
+ const struct CLIENT_REC *cr;
+
+ if (!clients ||
+ client_idx >= le16_to_cpu(ra->log_clients))
+ return false;
+
+ clients -= 1;
+ cr = ca + client_idx;
+
+ client_idx = le16_to_cpu(cr->next_client);
+
+ if (first_client) {
+ first_client = false;
+ if (cr->prev_client != LFS_NO_CLIENT_LE)
+ return false;
+ }
+ }
+ }
+
+ return true;
+}
+
+/*
+ * remove_client
+ *
+ * remove a client record from a client record list an restart area
+ */
+static inline void remove_client(struct CLIENT_REC *ca,
+ const struct CLIENT_REC *cr, __le16 *head)
+{
+ if (cr->prev_client == LFS_NO_CLIENT_LE)
+ *head = cr->next_client;
+ else
+ ca[le16_to_cpu(cr->prev_client)].next_client = cr->next_client;
+
+ if (cr->next_client != LFS_NO_CLIENT_LE)
+ ca[le16_to_cpu(cr->next_client)].prev_client = cr->prev_client;
+}
+
+/*
+ * add_client
+ *
+ * add a client record to the start of a list
+ */
+static inline void add_client(struct CLIENT_REC *ca, u16 index, __le16 *head)
+{
+ struct CLIENT_REC *cr = ca + index;
+
+ cr->prev_client = LFS_NO_CLIENT_LE;
+ cr->next_client = *head;
+
+ if (*head != LFS_NO_CLIENT_LE)
+ ca[le16_to_cpu(*head)].prev_client = cpu_to_le16(index);
+
+ *head = cpu_to_le16(index);
+}
+
+/*
+ * enum_rstbl
+ *
+ */
+static inline void *enum_rstbl(struct RESTART_TABLE *t, void *c)
+{
+ __le32 *e;
+ u32 bprt;
+ u16 rsize = t ? le16_to_cpu(t->size) : 0;
+
+ if (!c) {
+ if (!t || !t->total)
+ return NULL;
+ e = Add2Ptr(t, sizeof(struct RESTART_TABLE));
+ } else {
+ e = Add2Ptr(c, rsize);
+ }
+
+ /* Loop until we hit the first one allocated, or the end of the list */
+ for (bprt = bytes_per_rt(t); PtrOffset(t, e) < bprt;
+ e = Add2Ptr(e, rsize)) {
+ if (*e == RESTART_ENTRY_ALLOCATED_LE)
+ return e;
+ }
+ return NULL;
+}
+
+/*
+ * find_dp
+ *
+ * searches for a 'vcn' in Dirty Page Table,
+ */
+static inline struct DIR_PAGE_ENTRY *find_dp(struct RESTART_TABLE *dptbl,
+ u32 target_attr, u64 vcn)
+{
+ __le32 ta = cpu_to_le32(target_attr);
+ struct DIR_PAGE_ENTRY *dp = NULL;
+
+ while ((dp = enum_rstbl(dptbl, dp))) {
+ u64 dp_vcn = le64_to_cpu(dp->vcn);
+
+ if (dp->target_attr == ta && vcn >= dp_vcn &&
+ vcn < dp_vcn + le32_to_cpu(dp->lcns_follow)) {
+ return dp;
+ }
+ }
+ return NULL;
+}
+
+static inline u32 norm_file_page(u32 page_size, u32 *l_size, bool use_default)
+{
+ if (use_default)
+ page_size = DefaultLogPageSize;
+
+ /* Round the file size down to a system page boundary */
+ *l_size &= ~(page_size - 1);
+
+ /* File should contain at least 2 restart pages and MinLogRecordPages pages */
+ if (*l_size < (MinLogRecordPages + 2) * page_size)
+ return 0;
+
+ return page_size;
+}
+
+static bool check_log_rec(const struct LOG_REC_HDR *lr, u32 bytes, u32 tr,
+ u32 bytes_per_attr_entry)
+{
+ u16 t16;
+
+ if (bytes < sizeof(struct LOG_REC_HDR))
+ return false;
+ if (!tr)
+ return false;
+
+ if ((tr - sizeof(struct RESTART_TABLE)) %
+ sizeof(struct TRANSACTION_ENTRY))
+ return false;
+
+ if (le16_to_cpu(lr->redo_off) & 7)
+ return false;
+
+ if (le16_to_cpu(lr->undo_off) & 7)
+ return false;
+
+ if (lr->target_attr)
+ goto check_lcns;
+
+ if (is_target_required(le16_to_cpu(lr->redo_op)))
+ return false;
+
+ if (is_target_required(le16_to_cpu(lr->undo_op)))
+ return false;
+
+check_lcns:
+ if (!lr->lcns_follow)
+ goto check_length;
+
+ t16 = le16_to_cpu(lr->target_attr);
+ if ((t16 - sizeof(struct RESTART_TABLE)) % bytes_per_attr_entry)
+ return false;
+
+check_length:
+ if (bytes < lrh_length(lr))
+ return false;
+
+ return true;
+}
+
+static bool check_rstbl(const struct RESTART_TABLE *rt, size_t bytes)
+{
+ u32 ts;
+ u32 i, off;
+ u16 rsize = le16_to_cpu(rt->size);
+ u16 ne = le16_to_cpu(rt->used);
+ u32 ff = le32_to_cpu(rt->first_free);
+ u32 lf = le32_to_cpu(rt->last_free);
+
+ ts = rsize * ne + sizeof(struct RESTART_TABLE);
+
+ if (!rsize || rsize > bytes ||
+ rsize + sizeof(struct RESTART_TABLE) > bytes || bytes < ts ||
+ le16_to_cpu(rt->total) > ne || ff > ts || lf > ts ||
+ (ff && ff < sizeof(struct RESTART_TABLE)) ||
+ (lf && lf < sizeof(struct RESTART_TABLE))) {
+ return false;
+ }
+
+ /* Verify each entry is either allocated or points
+ * to a valid offset the table
+ */
+ for (i = 0; i < ne; i++) {
+ off = le32_to_cpu(*(__le32 *)Add2Ptr(
+ rt, i * rsize + sizeof(struct RESTART_TABLE)));
+
+ if (off != RESTART_ENTRY_ALLOCATED && off &&
+ (off < sizeof(struct RESTART_TABLE) ||
+ ((off - sizeof(struct RESTART_TABLE)) % rsize))) {
+ return false;
+ }
+ }
+
+ /* Walk through the list headed by the first entry to make
+ * sure none of the entries are currently being used
+ */
+ for (off = ff; off;) {
+ if (off == RESTART_ENTRY_ALLOCATED)
+ return false;
+
+ off = le32_to_cpu(*(__le32 *)Add2Ptr(rt, off));
+ }
+
+ return true;
+}
+
+/*
+ * free_rsttbl_idx
+ *
+ * frees a previously allocated index a Restart Table.
+ */
+static inline void free_rsttbl_idx(struct RESTART_TABLE *rt, u32 off)
+{
+ __le32 *e;
+ u32 lf = le32_to_cpu(rt->last_free);
+ __le32 off_le = cpu_to_le32(off);
+
+ e = Add2Ptr(rt, off);
+
+ if (off < le32_to_cpu(rt->free_goal)) {
+ *e = rt->first_free;
+ rt->first_free = off_le;
+ if (!lf)
+ rt->last_free = off_le;
+ } else {
+ if (lf)
+ *(__le32 *)Add2Ptr(rt, lf) = off_le;
+ else
+ rt->first_free = off_le;
+
+ rt->last_free = off_le;
+ *e = 0;
+ }
+
+ le16_sub_cpu(&rt->total, 1);
+}
+
+static inline struct RESTART_TABLE *init_rsttbl(u16 esize, u16 used)
+{
+ __le32 *e, *last_free;
+ u32 off;
+ u32 bytes = esize * used + sizeof(struct RESTART_TABLE);
+ u32 lf = sizeof(struct RESTART_TABLE) + (used - 1) * esize;
+ struct RESTART_TABLE *t = ntfs_zalloc(bytes);
+
+ t->size = cpu_to_le16(esize);
+ t->used = cpu_to_le16(used);
+ t->free_goal = cpu_to_le32(~0u);
+ t->first_free = cpu_to_le32(sizeof(struct RESTART_TABLE));
+ t->last_free = cpu_to_le32(lf);
+
+ e = (__le32 *)(t + 1);
+ last_free = Add2Ptr(t, lf);
+
+ for (off = sizeof(struct RESTART_TABLE) + esize; e < last_free;
+ e = Add2Ptr(e, esize), off += esize) {
+ *e = cpu_to_le32(off);
+ }
+ return t;
+}
+
+static inline struct RESTART_TABLE *extend_rsttbl(struct RESTART_TABLE *tbl,
+ u32 add, u32 free_goal)
+{
+ u16 esize = le16_to_cpu(tbl->size);
+ __le32 osize = cpu_to_le32(bytes_per_rt(tbl));
+ u32 used = le16_to_cpu(tbl->used);
+ struct RESTART_TABLE *rt = init_rsttbl(esize, used + add);
+
+ memcpy(rt + 1, tbl + 1, esize * used);
+
+ rt->free_goal = free_goal == ~0u
+ ? cpu_to_le32(~0u)
+ : cpu_to_le32(sizeof(struct RESTART_TABLE) +
+ free_goal * esize);
+
+ if (tbl->first_free) {
+ rt->first_free = tbl->first_free;
+ *(__le32 *)Add2Ptr(rt, le32_to_cpu(tbl->last_free)) = osize;
+ } else {
+ rt->first_free = osize;
+ }
+
+ rt->total = tbl->total;
+
+ ntfs_free(tbl);
+ return rt;
+}
+
+/*
+ * alloc_rsttbl_idx
+ *
+ * allocates an index from within a previously initialized Restart Table
+ */
+static inline void *alloc_rsttbl_idx(struct RESTART_TABLE **tbl)
+{
+ u32 off;
+ __le32 *e;
+ struct RESTART_TABLE *t = *tbl;
+
+ if (!t->first_free)
+ *tbl = t = extend_rsttbl(t, 16, ~0u);
+
+ off = le32_to_cpu(t->first_free);
+
+ /* Dequeue this entry and zero it. */
+ e = Add2Ptr(t, off);
+
+ t->first_free = *e;
+
+ memset(e, 0, le16_to_cpu(t->size));
+
+ *e = RESTART_ENTRY_ALLOCATED_LE;
+
+ /* If list is going empty, then we fix the last_free as well. */
+ if (!t->first_free)
+ t->last_free = 0;
+
+ le16_add_cpu(&t->total, 1);
+
+ return Add2Ptr(t, off);
+}
+
+/*
+ * alloc_rsttbl_from_idx
+ *
+ * allocates a specific index from within a previously initialized Restart Table
+ */
+static inline void *alloc_rsttbl_from_idx(struct RESTART_TABLE **tbl, u32 vbo)
+{
+ u32 off;
+ __le32 *e;
+ struct RESTART_TABLE *rt = *tbl;
+ u32 bytes = bytes_per_rt(rt);
+ u16 esize = le16_to_cpu(rt->size);
+
+ /* If the entry is not the table, we will have to extend the table */
+ if (vbo >= bytes) {
+ /*
+ * extend the size by computing the number of entries between
+ * the existing size and the desired index and adding
+ * 1 to that
+ */
+ u32 bytes2idx = vbo - bytes;
+
+ /* There should always be an integral number of entries being added */
+ /* Now extend the table */
+ *tbl = rt = extend_rsttbl(rt, bytes2idx / esize + 1, bytes);
+ if (!rt)
+ return NULL;
+ }
+
+ /* see if the entry is already allocated, and just return if it is. */
+ e = Add2Ptr(rt, vbo);
+
+ if (*e == RESTART_ENTRY_ALLOCATED_LE)
+ return e;
+
+ /*
+ * Walk through the table, looking for the entry we're
+ * interested and the previous entry
+ */
+ off = le32_to_cpu(rt->first_free);
+ e = Add2Ptr(rt, off);
+
+ if (off == vbo) {
+ /* this is a match */
+ rt->first_free = *e;
+ goto skip_looking;
+ }
+
+ /*
+ * need to walk through the list looking for the predecessor of our entry
+ */
+ for (;;) {
+ /* Remember the entry just found */
+ u32 last_off = off;
+ __le32 *last_e = e;
+
+ /* should never run of entries. */
+
+ /* Lookup up the next entry the list */
+ off = le32_to_cpu(*last_e);
+ e = Add2Ptr(rt, off);
+
+ /* If this is our match we are done */
+ if (off == vbo) {
+ *last_e = *e;
+
+ /* If this was the last entry, we update that the table as well */
+ if (le32_to_cpu(rt->last_free) == off)
+ rt->last_free = cpu_to_le32(last_off);
+ break;
+ }
+ }
+
+skip_looking:
+ /* If the list is now empty, we fix the last_free as well */
+ if (!rt->first_free)
+ rt->last_free = 0;
+
+ /* Zero this entry */
+ memset(e, 0, esize);
+ *e = RESTART_ENTRY_ALLOCATED_LE;
+
+ le16_add_cpu(&rt->total, 1);
+
+ return e;
+}
+
+#define RESTART_SINGLE_PAGE_IO cpu_to_le16(0x0001)
+
+#define NTFSLOG_WRAPPED 0x00000001
+#define NTFSLOG_MULTIPLE_PAGE_IO 0x00000002
+#define NTFSLOG_NO_LAST_LSN 0x00000004
+#define NTFSLOG_REUSE_TAIL 0x00000010
+#define NTFSLOG_NO_OLDEST_LSN 0x00000020
+
+/*
+ * Helper struct to work with NTFS LogFile
+ */
+struct ntfs_log {
+ struct ntfs_inode *ni;
+
+ u32 l_size;
+ u32 sys_page_size;
+ u32 sys_page_mask;
+ u32 page_size;
+ u32 page_mask; // page_size - 1
+ u8 page_bits;
+ struct RECORD_PAGE_HDR *one_page_buf;
+
+ struct RESTART_TABLE *open_attr_tbl;
+ u32 transaction_id;
+ u32 clst_per_page;
+
+ u32 first_page;
+ u32 next_page;
+ u32 ra_off;
+ u32 data_off;
+ u32 restart_size;
+ u32 data_size;
+ u16 record_header_len;
+ u64 seq_num;
+ u32 seq_num_bits;
+ u32 file_data_bits;
+ u32 seq_num_mask; /* (1 << file_data_bits) - 1 */
+
+ struct RESTART_AREA *ra; /* in-memory image of the next restart area */
+ u32 ra_size; /* the usable size of the restart area */
+
+ /*
+ * If true, then the in-memory restart area is to be written
+ * to the first position on the disk
+ */
+ bool init_ra;
+ bool set_dirty; /* true if we need to set dirty flag */
+
+ u64 oldest_lsn;
+
+ u32 oldest_lsn_off;
+ u64 last_lsn;
+
+ u32 total_avail;
+ u32 total_avail_pages;
+ u32 total_undo_commit;
+ u32 max_current_avail;
+ u32 current_avail;
+ u32 reserved;
+
+ short major_ver;
+ short minor_ver;
+
+ u32 l_flags; /* See NTFSLOG_XXX */
+ u32 current_openlog_count; /* On-disk value for open_log_count */
+
+ struct CLIENT_ID client_id;
+ u32 client_undo_commit;
+};
+
+static inline u32 lsn_to_vbo(struct ntfs_log *log, const u64 lsn)
+{
+ u32 vbo = (lsn << log->seq_num_bits) >> (log->seq_num_bits - 3);
+
+ return vbo;
+}
+
+/* compute the offset in the log file of the next log page */
+static inline u32 next_page_off(struct ntfs_log *log, u32 off)
+{
+ off = (off & ~log->sys_page_mask) + log->page_size;
+ return off >= log->l_size ? log->first_page : off;
+}
+
+static inline u32 lsn_to_page_off(struct ntfs_log *log, u64 lsn)
+{
+ return (((u32)lsn) << 3) & log->page_mask;
+}
+
+static inline u64 vbo_to_lsn(struct ntfs_log *log, u32 off, u64 Seq)
+{
+ return (off >> 3) + (Seq << log->file_data_bits);
+}
+
+static inline bool is_lsn_in_file(struct ntfs_log *log, u64 lsn)
+{
+ return lsn >= log->oldest_lsn &&
+ lsn <= le64_to_cpu(log->ra->current_lsn);
+}
+
+static inline u32 hdr_file_off(struct ntfs_log *log,
+ struct RECORD_PAGE_HDR *hdr)
+{
+ if (log->major_ver < 2)
+ return le64_to_cpu(hdr->rhdr.lsn);
+
+ return le32_to_cpu(hdr->file_off);
+}
+
+static inline u64 base_lsn(struct ntfs_log *log,
+ const struct RECORD_PAGE_HDR *hdr, u64 lsn)
+{
+ u64 h_lsn = le64_to_cpu(hdr->rhdr.lsn);
+ u64 ret = (((h_lsn >> log->file_data_bits) +
+ (lsn < (lsn_to_vbo(log, h_lsn) & ~log->page_mask) ? 1 : 0))
+ << log->file_data_bits) +
+ ((((is_log_record_end(hdr) &&
+ h_lsn <= le64_to_cpu(hdr->record_hdr.last_end_lsn))
+ ? le16_to_cpu(hdr->record_hdr.next_record_off)
+ : log->page_size) +
+ lsn) >>
+ 3);
+
+ return ret;
+}
+
+static inline bool verify_client_lsn(struct ntfs_log *log,
+ const struct CLIENT_REC *client, u64 lsn)
+{
+ return lsn >= le64_to_cpu(client->oldest_lsn) &&
+ lsn <= le64_to_cpu(log->ra->current_lsn) && lsn;
+}
+
+struct restart_info {
+ u64 last_lsn;
+ struct RESTART_HDR *r_page;
+ u32 vbo;
+ bool chkdsk_was_run;
+ bool valid_page;
+ bool initialized;
+ bool restart;
+};
+
+static int read_log_page(struct ntfs_log *log, u32 vbo,
+ struct RECORD_PAGE_HDR **buffer, bool *usa_error)
+{
+ int err = 0;
+ u32 page_idx = vbo >> log->page_bits;
+ u32 page_off = vbo & log->page_mask;
+ u32 bytes = log->page_size - page_off;
+ void *to_free = NULL;
+ u32 page_vbo = page_idx << log->page_bits;
+ struct RECORD_PAGE_HDR *page_buf;
+ struct ntfs_inode *ni = log->ni;
+ bool bBAAD;
+
+ if (vbo >= log->l_size)
+ return -EINVAL;
+
+ if (!*buffer) {
+ to_free = ntfs_malloc(bytes);
+ if (!to_free)
+ return -ENOMEM;
+ *buffer = to_free;
+ }
+
+ page_buf = page_off ? log->one_page_buf : *buffer;
+
+ err = ntfs_read_run_nb(ni->mi.sbi, &ni->file.run, page_vbo, page_buf,
+ log->page_size, NULL);
+ if (err)
+ goto out;
+
+ if (page_buf->rhdr.sign != NTFS_FFFF_SIGNATURE)
+ ntfs_fix_post_read(&page_buf->rhdr, PAGE_SIZE, false);
+
+ if (page_buf != *buffer)
+ memcpy(*buffer, Add2Ptr(page_buf, page_off), bytes);
+
+ bBAAD = page_buf->rhdr.sign == NTFS_BAAD_SIGNATURE;
+
+ if (usa_error)
+ *usa_error = bBAAD;
+ /* Check that the update sequence array for this page is valid */
+ /* If we don't allow errors, raise an error status */
+ else if (bBAAD)
+ err = -EINVAL;
+
+out:
+ if (err && to_free) {
+ ntfs_free(to_free);
+ *buffer = NULL;
+ }
+
+ return err;
+}
+
+/*
+ * log_read_rst
+ *
+ * it walks through 512 blocks of the file looking for a valid restart page header
+ * It will stop the first time we find a valid page header
+ */
+static int log_read_rst(struct ntfs_log *log, u32 l_size, bool first,
+ struct restart_info *info)
+{
+ u32 skip, vbo;
+ struct RESTART_HDR *r_page = ntfs_malloc(DefaultLogPageSize);
+
+ if (!r_page)
+ return -ENOMEM;
+
+ memset(info, 0, sizeof(struct restart_info));
+
+ /* Determine which restart area we are looking for */
+ if (first) {
+ vbo = 0;
+ skip = 512;
+ } else {
+ vbo = 512;
+ skip = 0;
+ }
+
+ /* loop continuously until we succeed */
+ for (; vbo < l_size; vbo = 2 * vbo + skip, skip = 0) {
+ bool usa_error;
+ u32 sys_page_size;
+ bool brst, bchk;
+ struct RESTART_AREA *ra;
+
+ /* Read a page header at the current offset */
+ if (read_log_page(log, vbo, (struct RECORD_PAGE_HDR **)&r_page,
+ &usa_error)) {
+ /* ignore any errors */
+ continue;
+ }
+
+ /* exit if the signature is a log record page */
+ if (r_page->rhdr.sign == NTFS_RCRD_SIGNATURE) {
+ info->initialized = true;
+ break;
+ }
+
+ brst = r_page->rhdr.sign == NTFS_RSTR_SIGNATURE;
+ bchk = r_page->rhdr.sign == NTFS_CHKD_SIGNATURE;
+
+ if (!bchk && !brst) {
+ if (r_page->rhdr.sign != NTFS_FFFF_SIGNATURE) {
+ /*
+ * Remember if the signature does not
+ * indicate uninitialized file
+ */
+ info->initialized = true;
+ }
+ continue;
+ }
+
+ ra = NULL;
+ info->valid_page = false;
+ info->initialized = true;
+ info->vbo = vbo;
+
+ /* Let's check the restart area if this is a valid page */
+ if (!is_rst_page_hdr_valid(vbo, r_page))
+ goto check_result;
+ ra = Add2Ptr(r_page, le16_to_cpu(r_page->ra_off));
+
+ if (!is_rst_area_valid(r_page))
+ goto check_result;
+
+ /*
+ * We have a valid restart page header and restart area.
+ * If chkdsk was run or we have no clients then we have
+ * no more checking to do
+ */
+ if (bchk || ra->client_idx[1] == LFS_NO_CLIENT_LE) {
+ info->valid_page = true;
+ goto check_result;
+ }
+
+ /* Read the entire restart area */
+ sys_page_size = le32_to_cpu(r_page->sys_page_size);
+ if (DefaultLogPageSize != sys_page_size) {
+ ntfs_free(r_page);
+ r_page = ntfs_zalloc(sys_page_size);
+ if (!r_page)
+ return -ENOMEM;
+
+ if (read_log_page(log, vbo,
+ (struct RECORD_PAGE_HDR **)&r_page,
+ &usa_error)) {
+ /* ignore any errors */
+ ntfs_free(r_page);
+ r_page = NULL;
+ continue;
+ }
+ }
+
+ if (is_client_area_valid(r_page, usa_error)) {
+ info->valid_page = true;
+ ra = Add2Ptr(r_page, le16_to_cpu(r_page->ra_off));
+ }
+
+check_result:
+ /* If chkdsk was run then update the caller's values and return */
+ if (r_page->rhdr.sign == NTFS_CHKD_SIGNATURE) {
+ info->chkdsk_was_run = true;
+ info->last_lsn = le64_to_cpu(r_page->rhdr.lsn);
+ info->restart = true;
+ info->r_page = r_page;
+ return 0;
+ }
+
+ /* If we have a valid page then copy the values we need from it */
+ if (info->valid_page) {
+ info->last_lsn = le64_to_cpu(ra->current_lsn);
+ info->restart = true;
+ info->r_page = r_page;
+ return 0;
+ }
+ }
+
+ ntfs_free(r_page);
+
+ return 0;
+}
+
+/*
+ * log_init_pg_hdr
+ *
+ * init "log' from restart page header
+ */
+static void log_init_pg_hdr(struct ntfs_log *log, u32 sys_page_size,
+ u32 page_size, u16 major_ver, u16 minor_ver)
+{
+ log->sys_page_size = sys_page_size;
+ log->sys_page_mask = sys_page_size - 1;
+ log->page_size = page_size;
+ log->page_mask = page_size - 1;
+ log->page_bits = blksize_bits(page_size);
+
+ log->clst_per_page = log->page_size >> log->ni->mi.sbi->cluster_bits;
+ if (!log->clst_per_page)
+ log->clst_per_page = 1;
+
+ log->first_page = major_ver >= 2
+ ? 0x22 * page_size
+ : ((sys_page_size << 1) + (page_size << 1));
+ log->major_ver = major_ver;
+ log->minor_ver = minor_ver;
+}
+
+/*
+ * log_create
+ *
+ * init "log" in cases when we don't have a restart area to use
+ */
+static void log_create(struct ntfs_log *log, u32 l_size, const u64 last_lsn,
+ u32 open_log_count, bool wrapped, bool use_multi_page)
+{
+ log->l_size = l_size;
+ /* All file offsets must be quadword aligned */
+ log->file_data_bits = blksize_bits(l_size) - 3;
+ log->seq_num_mask = (8 << log->file_data_bits) - 1;
+ log->seq_num_bits = sizeof(u64) * 8 - log->file_data_bits;
+ log->seq_num = (last_lsn >> log->file_data_bits) + 2;
+ log->next_page = log->first_page;
+ log->oldest_lsn = log->seq_num << log->file_data_bits;
+ log->oldest_lsn_off = 0;
+ log->last_lsn = log->oldest_lsn;
+
+ log->l_flags |= NTFSLOG_NO_LAST_LSN | NTFSLOG_NO_OLDEST_LSN;
+
+ /* Set the correct flags for the I/O and indicate if we have wrapped */
+ if (wrapped)
+ log->l_flags |= NTFSLOG_WRAPPED;
+
+ if (use_multi_page)
+ log->l_flags |= NTFSLOG_MULTIPLE_PAGE_IO;
+
+ /* Compute the log page values */
+ log->data_off = QuadAlign(
+ offsetof(struct RECORD_PAGE_HDR, fixups) +
+ sizeof(short) * ((log->page_size >> SECTOR_SHIFT) + 1));
+ log->data_size = log->page_size - log->data_off;
+ log->record_header_len = sizeof(struct LFS_RECORD_HDR);
+
+ /* Remember the different page sizes for reservation */
+ log->reserved = log->data_size - log->record_header_len;
+
+ /* Compute the restart page values. */
+ log->ra_off = QuadAlign(
+ offsetof(struct RESTART_HDR, fixups) +
+ sizeof(short) * ((log->sys_page_size >> SECTOR_SHIFT) + 1));
+ log->restart_size = log->sys_page_size - log->ra_off;
+ log->ra_size = struct_size(log->ra, clients, 1);
+ log->current_openlog_count = open_log_count;
+
+ /*
+ * The total available log file space is the number of
+ * log file pages times the space available on each page
+ */
+ log->total_avail_pages = log->l_size - log->first_page;
+ log->total_avail = log->total_avail_pages >> log->page_bits;
+
+ /*
+ * We assume that we can't use the end of the page less than
+ * the file record size
+ * Then we won't need to reserve more than the caller asks for
+ */
+ log->max_current_avail = log->total_avail * log->reserved;
+ log->total_avail = log->total_avail * log->data_size;
+ log->current_avail = log->max_current_avail;
+}
+
+/*
+ * log_create_ra
+ *
+ * This routine is called to fill a restart area from the values stored in 'log'
+ */
+static struct RESTART_AREA *log_create_ra(struct ntfs_log *log)
+{
+ struct CLIENT_REC *cr;
+ struct RESTART_AREA *ra = ntfs_zalloc(log->restart_size);
+
+ if (!ra)
+ return NULL;
+
+ ra->current_lsn = cpu_to_le64(log->last_lsn);
+ ra->log_clients = cpu_to_le16(1);
+ ra->client_idx[1] = LFS_NO_CLIENT_LE;
+ if (log->l_flags & NTFSLOG_MULTIPLE_PAGE_IO)
+ ra->flags = RESTART_SINGLE_PAGE_IO;
+ ra->seq_num_bits = cpu_to_le32(log->seq_num_bits);
+ ra->ra_len = cpu_to_le16(log->ra_size);
+ ra->client_off = cpu_to_le16(offsetof(struct RESTART_AREA, clients));
+ ra->l_size = cpu_to_le64(log->l_size);
+ ra->rec_hdr_len = cpu_to_le16(log->record_header_len);
+ ra->data_off = cpu_to_le16(log->data_off);
+ ra->open_log_count = cpu_to_le32(log->current_openlog_count + 1);
+
+ cr = ra->clients;
+
+ cr->prev_client = LFS_NO_CLIENT_LE;
+ cr->next_client = LFS_NO_CLIENT_LE;
+
+ return ra;
+}
+
+static u32 final_log_off(struct ntfs_log *log, u64 lsn, u32 data_len)
+{
+ u32 base_vbo = lsn << 3;
+ u32 final_log_off = (base_vbo & log->seq_num_mask) & ~log->page_mask;
+ u32 page_off = base_vbo & log->page_mask;
+ u32 tail = log->page_size - page_off;
+
+ page_off -= 1;
+
+ /* Add the length of the header */
+ data_len += log->record_header_len;
+
+ /*
+ * If this lsn is contained this log page we are done
+ * Otherwise we need to walk through several log pages
+ */
+ if (data_len > tail) {
+ data_len -= tail;
+ tail = log->data_size;
+ page_off = log->data_off - 1;
+
+ for (;;) {
+ final_log_off = next_page_off(log, final_log_off);
+
+ /* We are done if the remaining bytes fit on this page */
+ if (data_len <= tail)
+ break;
+ data_len -= tail;
+ }
+ }
+
+ /*
+ * We add the remaining bytes to our starting position on this page
+ * and then add that value to the file offset of this log page
+ */
+ return final_log_off + data_len + page_off;
+}
+
+static int next_log_lsn(struct ntfs_log *log, const struct LFS_RECORD_HDR *rh,
+ u64 *lsn)
+{
+ int err;
+ u64 this_lsn = le64_to_cpu(rh->this_lsn);
+ u32 vbo = lsn_to_vbo(log, this_lsn);
+ u32 end =
+ final_log_off(log, this_lsn, le32_to_cpu(rh->client_data_len));
+ u32 hdr_off = end & ~log->sys_page_mask;
+ u64 seq = this_lsn >> log->file_data_bits;
+ struct RECORD_PAGE_HDR *page = NULL;
+
+ /* Remember if we wrapped */
+ if (end <= vbo)
+ seq += 1;
+
+ /* log page header for this page */
+ err = read_log_page(log, hdr_off, &page, NULL);
+ if (err)
+ return err;
+
+ /*
+ * If the lsn we were given was not the last lsn on this page,
+ * then the starting offset for the next lsn is on a quad word
+ * boundary following the last file offset for the current lsn
+ * Otherwise the file offset is the start of the data on the next page
+ */
+ if (this_lsn == le64_to_cpu(page->rhdr.lsn)) {
+ /* If we wrapped, we need to increment the sequence number */
+ hdr_off = next_page_off(log, hdr_off);
+ if (hdr_off == log->first_page)
+ seq += 1;
+
+ vbo = hdr_off + log->data_off;
+ } else {
+ vbo = QuadAlign(end);
+ }
+
+ /* Compute the lsn based on the file offset and the sequence count */
+ *lsn = vbo_to_lsn(log, vbo, seq);
+
+ /*
+ * If this lsn is within the legal range for the file, we return true
+ * Otherwise false indicates that there are no more lsn's
+ */
+ if (!is_lsn_in_file(log, *lsn))
+ *lsn = 0;
+
+ ntfs_free(page);
+
+ return 0;
+}
+
+/*
+ * current_log_avail
+ *
+ * calculate the number of bytes available for log records
+ */
+static u32 current_log_avail(struct ntfs_log *log)
+{
+ u32 oldest_off, next_free_off, free_bytes;
+
+ if (log->l_flags & NTFSLOG_NO_LAST_LSN) {
+ /* The entire file is available */
+ return log->max_current_avail;
+ }
+
+ /*
+ * If there is a last lsn the restart area then we know that we will
+ * have to compute the free range
+ * If there is no oldest lsn then start at the first page of the file
+ */
+ oldest_off = (log->l_flags & NTFSLOG_NO_OLDEST_LSN)
+ ? log->first_page
+ : (log->oldest_lsn_off & ~log->sys_page_mask);
+
+ /*
+ * We will use the next log page offset to compute the next free page\
+ * If we are going to reuse this page go to the next page
+ * If we are at the first page then use the end of the file
+ */
+ next_free_off = (log->l_flags & NTFSLOG_REUSE_TAIL)
+ ? log->next_page + log->page_size
+ : log->next_page == log->first_page
+ ? log->l_size
+ : log->next_page;
+
+ /* If the two offsets are the same then there is no available space */
+ if (oldest_off == next_free_off)
+ return 0;
+ /*
+ * If the free offset follows the oldest offset then subtract
+ * this range from the total available pages
+ */
+ free_bytes =
+ oldest_off < next_free_off
+ ? log->total_avail_pages - (next_free_off - oldest_off)
+ : oldest_off - next_free_off;
+
+ free_bytes >>= log->page_bits;
+ return free_bytes * log->reserved;
+}
+
+static bool check_subseq_log_page(struct ntfs_log *log,
+ const struct RECORD_PAGE_HDR *rp, u32 vbo,
+ u64 seq)
+{
+ u64 lsn_seq;
+ const struct NTFS_RECORD_HEADER *rhdr = &rp->rhdr;
+ u64 lsn = le64_to_cpu(rhdr->lsn);
+
+ if (rhdr->sign == NTFS_FFFF_SIGNATURE || !rhdr->sign)
+ return false;
+
+ /*
+ * If the last lsn on the page occurs was written after the page
+ * that caused the original error then we have a fatal error
+ */
+ lsn_seq = lsn >> log->file_data_bits;
+
+ /*
+ * If the sequence number for the lsn the page is equal or greater
+ * than lsn we expect, then this is a subsequent write
+ */
+ return lsn_seq >= seq ||
+ (lsn_seq == seq - 1 && log->first_page == vbo &&
+ vbo != (lsn_to_vbo(log, lsn) & ~log->page_mask));
+}
+
+/*
+ * last_log_lsn
+ *
+ * This routine walks through the log pages for a file, searching for the
+ * last log page written to the file
+ */
+static int last_log_lsn(struct ntfs_log *log)
+{
+ int err;
+ bool usa_error = false;
+ bool replace_page = false;
+ bool reuse_page = log->l_flags & NTFSLOG_REUSE_TAIL;
+ bool wrapped_file, wrapped;
+
+ u32 page_cnt = 1, page_pos = 1;
+ u32 page_off = 0, page_off1 = 0, saved_off = 0;
+ u32 final_off, second_off, final_off_prev = 0, second_off_prev = 0;
+ u32 first_file_off = 0, second_file_off = 0;
+ u32 part_io_count = 0;
+ u32 tails = 0;
+ u32 this_off, curpage_off, nextpage_off, remain_pages;
+
+ u64 expected_seq, seq_base = 0, lsn_base = 0;
+ u64 best_lsn, best_lsn1, best_lsn2;
+ u64 lsn_cur, lsn1, lsn2;
+ u64 last_ok_lsn = reuse_page ? log->last_lsn : 0;
+
+ u16 cur_pos, best_page_pos;
+
+ struct RECORD_PAGE_HDR *page = NULL;
+ struct RECORD_PAGE_HDR *tst_page = NULL;
+ struct RECORD_PAGE_HDR *first_tail = NULL;
+ struct RECORD_PAGE_HDR *second_tail = NULL;
+ struct RECORD_PAGE_HDR *tail_page = NULL;
+ struct RECORD_PAGE_HDR *second_tail_prev = NULL;
+ struct RECORD_PAGE_HDR *first_tail_prev = NULL;
+ struct RECORD_PAGE_HDR *page_bufs = NULL;
+ struct RECORD_PAGE_HDR *best_page;
+
+ if (log->major_ver >= 2) {
+ final_off = 0x02 * log->page_size;
+ second_off = 0x12 * log->page_size;
+
+ // 0x10 == 0x12 - 0x2
+ page_bufs = ntfs_malloc(log->page_size * 0x10);
+ if (!page_bufs)
+ return -ENOMEM;
+ } else {
+ second_off = log->first_page - log->page_size;
+ final_off = second_off - log->page_size;
+ }
+
+next_tail:
+ /* Read second tail page (at pos 3/0x12000) */
+ if (read_log_page(log, second_off, &second_tail, &usa_error) ||
+ usa_error || second_tail->rhdr.sign != NTFS_RCRD_SIGNATURE) {
+ ntfs_free(second_tail);
+ second_tail = NULL;
+ second_file_off = 0;
+ lsn2 = 0;
+ } else {
+ second_file_off = hdr_file_off(log, second_tail);
+ lsn2 = le64_to_cpu(second_tail->record_hdr.last_end_lsn);
+ }
+
+ /* Read first tail page (at pos 2/0x2000 ) */
+ if (read_log_page(log, final_off, &first_tail, &usa_error) ||
+ usa_error || first_tail->rhdr.sign != NTFS_RCRD_SIGNATURE) {
+ ntfs_free(first_tail);
+ first_tail = NULL;
+ first_file_off = 0;
+ lsn1 = 0;
+ } else {
+ first_file_off = hdr_file_off(log, first_tail);
+ lsn1 = le64_to_cpu(first_tail->record_hdr.last_end_lsn);
+ }
+
+ if (log->major_ver < 2) {
+ int best_page;
+
+ first_tail_prev = first_tail;
+ final_off_prev = first_file_off;
+ second_tail_prev = second_tail;
+ second_off_prev = second_file_off;
+ tails = 1;
+
+ if (!first_tail && !second_tail)
+ goto tail_read;
+
+ if (first_tail && second_tail)
+ best_page = lsn1 < lsn2 ? 1 : 0;
+ else if (first_tail)
+ best_page = 0;
+ else
+ best_page = 1;
+
+ page_off = best_page ? second_file_off : first_file_off;
+ seq_base = (best_page ? lsn2 : lsn1) >> log->file_data_bits;
+ goto tail_read;
+ }
+
+ best_lsn1 = first_tail ? base_lsn(log, first_tail, first_file_off) : 0;
+ best_lsn2 =
+ second_tail ? base_lsn(log, second_tail, second_file_off) : 0;
+
+ if (first_tail && second_tail) {
+ if (best_lsn1 > best_lsn2) {
+ best_lsn = best_lsn1;
+ best_page = first_tail;
+ this_off = first_file_off;
+ } else {
+ best_lsn = best_lsn2;
+ best_page = second_tail;
+ this_off = second_file_off;
+ }
+ } else if (first_tail) {
+ best_lsn = best_lsn1;
+ best_page = first_tail;
+ this_off = first_file_off;
+ } else if (second_tail) {
+ best_lsn = best_lsn2;
+ best_page = second_tail;
+ this_off = second_file_off;
+ } else {
+ goto tail_read;
+ }
+
+ best_page_pos = le16_to_cpu(best_page->page_pos);
+
+ if (!tails) {
+ if (best_page_pos == page_pos) {
+ seq_base = best_lsn >> log->file_data_bits;
+ saved_off = page_off = le32_to_cpu(best_page->file_off);
+ lsn_base = best_lsn;
+
+ memmove(page_bufs, best_page, log->page_size);
+
+ page_cnt = le16_to_cpu(best_page->page_count);
+ if (page_cnt > 1)
+ page_pos += 1;
+
+ tails = 1;
+ }
+ } else if (seq_base == (best_lsn >> log->file_data_bits) &&
+ saved_off + log->page_size == this_off &&
+ lsn_base < best_lsn &&
+ (page_pos != page_cnt || best_page_pos == page_pos ||
+ best_page_pos == 1) &&
+ (page_pos >= page_cnt || best_page_pos == page_pos)) {
+ u16 bppc = le16_to_cpu(best_page->page_count);
+
+ saved_off += log->page_size;
+ lsn_base = best_lsn;
+
+ memmove(Add2Ptr(page_bufs, tails * log->page_size), best_page,
+ log->page_size);
+
+ tails += 1;
+
+ if (best_page_pos != bppc) {
+ page_cnt = bppc;
+ page_pos = best_page_pos;
+
+ if (page_cnt > 1)
+ page_pos += 1;
+ } else {
+ page_pos = page_cnt = 1;
+ }
+ } else {
+ ntfs_free(first_tail);
+ ntfs_free(second_tail);
+ goto tail_read;
+ }
+
+ ntfs_free(first_tail_prev);
+ first_tail_prev = first_tail;
+ final_off_prev = first_file_off;
+ first_tail = NULL;
+
+ ntfs_free(second_tail_prev);
+ second_tail_prev = second_tail;
+ second_off_prev = second_file_off;
+ second_tail = NULL;
+
+ final_off += log->page_size;
+ second_off += log->page_size;
+
+ if (tails < 0x10)
+ goto next_tail;
+tail_read:
+ first_tail = first_tail_prev;
+ final_off = final_off_prev;
+
+ second_tail = second_tail_prev;
+ second_off = second_off_prev;
+
+ page_cnt = page_pos = 1;
+
+ curpage_off = seq_base == log->seq_num ? min(log->next_page, page_off)
+ : log->next_page;
+
+ wrapped_file =
+ curpage_off == log->first_page &&
+ !(log->l_flags & (NTFSLOG_NO_LAST_LSN | NTFSLOG_REUSE_TAIL));
+
+ expected_seq = wrapped_file ? (log->seq_num + 1) : log->seq_num;
+
+ nextpage_off = curpage_off;
+
+next_page:
+ tail_page = NULL;
+ /* Read the next log page */
+ err = read_log_page(log, curpage_off, &page, &usa_error);
+
+ /* Compute the next log page offset the file */
+ nextpage_off = next_page_off(log, curpage_off);
+ wrapped = nextpage_off == log->first_page;
+
+ if (tails > 1) {
+ struct RECORD_PAGE_HDR *cur_page =
+ Add2Ptr(page_bufs, curpage_off - page_off);
+
+ if (curpage_off == saved_off) {
+ tail_page = cur_page;
+ goto use_tail_page;
+ }
+
+ if (page_off > curpage_off || curpage_off >= saved_off)
+ goto use_tail_page;
+
+ if (page_off1)
+ goto use_cur_page;
+
+ if (!err && !usa_error &&
+ page->rhdr.sign == NTFS_RCRD_SIGNATURE &&
+ cur_page->rhdr.lsn == page->rhdr.lsn &&
+ cur_page->record_hdr.next_record_off ==
+ page->record_hdr.next_record_off &&
+ ((page_pos == page_cnt &&
+ le16_to_cpu(page->page_pos) == 1) ||
+ (page_pos != page_cnt &&
+ le16_to_cpu(page->page_pos) == page_pos + 1 &&
+ le16_to_cpu(page->page_count) == page_cnt))) {
+ cur_page = NULL;
+ goto use_tail_page;
+ }
+
+ page_off1 = page_off;
+
+use_cur_page:
+
+ lsn_cur = le64_to_cpu(cur_page->rhdr.lsn);
+
+ if (last_ok_lsn !=
+ le64_to_cpu(cur_page->record_hdr.last_end_lsn) &&
+ ((lsn_cur >> log->file_data_bits) +
+ ((curpage_off <
+ (lsn_to_vbo(log, lsn_cur) & ~log->page_mask))
+ ? 1
+ : 0)) != expected_seq) {
+ goto check_tail;
+ }
+
+ if (!is_log_record_end(cur_page)) {
+ tail_page = NULL;
+ last_ok_lsn = lsn_cur;
+ goto next_page_1;
+ }
+
+ log->seq_num = expected_seq;
+ log->l_flags &= ~NTFSLOG_NO_LAST_LSN;
+ log->last_lsn = le64_to_cpu(cur_page->record_hdr.last_end_lsn);
+ log->ra->current_lsn = cur_page->record_hdr.last_end_lsn;
+
+ if (log->record_header_len <=
+ log->page_size -
+ le16_to_cpu(cur_page->record_hdr.next_record_off)) {
+ log->l_flags |= NTFSLOG_REUSE_TAIL;
+ log->next_page = curpage_off;
+ } else {
+ log->l_flags &= ~NTFSLOG_REUSE_TAIL;
+ log->next_page = nextpage_off;
+ }
+
+ if (wrapped_file)
+ log->l_flags |= NTFSLOG_WRAPPED;
+
+ last_ok_lsn = le64_to_cpu(cur_page->record_hdr.last_end_lsn);
+ goto next_page_1;
+ }
+
+ /*
+ * If we are at the expected first page of a transfer check to see
+ * if either tail copy is at this offset
+ * If this page is the last page of a transfer, check if we wrote
+ * a subsequent tail copy
+ */
+ if (page_cnt == page_pos || page_cnt == page_pos + 1) {
+ /*
+ * Check if the offset matches either the first or second
+ * tail copy. It is possible it will match both
+ */
+ if (curpage_off == final_off)
+ tail_page = first_tail;
+
+ /*
+ * If we already matched on the first page then
+ * check the ending lsn's.
+ */
+ if (curpage_off == second_off) {
+ if (!tail_page ||
+ (second_tail &&
+ le64_to_cpu(second_tail->record_hdr.last_end_lsn) >
+ le64_to_cpu(first_tail->record_hdr
+ .last_end_lsn))) {
+ tail_page = second_tail;
+ }
+ }
+ }
+
+use_tail_page:
+ if (tail_page) {
+ /* we have a candidate for a tail copy */
+ lsn_cur = le64_to_cpu(tail_page->record_hdr.last_end_lsn);
+
+ if (last_ok_lsn < lsn_cur) {
+ /*
+ * If the sequence number is not expected,
+ * then don't use the tail copy
+ */
+ if (expected_seq != (lsn_cur >> log->file_data_bits))
+ tail_page = NULL;
+ } else if (last_ok_lsn > lsn_cur) {
+ /*
+ * If the last lsn is greater than the one on
+ * this page then forget this tail
+ */
+ tail_page = NULL;
+ }
+ }
+
+ /* If we have an error on the current page, we will break of this loop */
+ if (err || usa_error)
+ goto check_tail;
+
+ /*
+ * Done if the last lsn on this page doesn't match the previous known
+ * last lsn or the sequence number is not expected
+ */
+ lsn_cur = le64_to_cpu(page->rhdr.lsn);
+ if (last_ok_lsn != lsn_cur &&
+ expected_seq != (lsn_cur >> log->file_data_bits)) {
+ goto check_tail;
+ }
+
+ /*
+ * Check that the page position and page count values are correct
+ * If this is the first page of a transfer the position must be 1
+ * and the count will be unknown
+ */
+ if (page_cnt == page_pos) {
+ if (page->page_pos != cpu_to_le16(1) &&
+ (!reuse_page || page->page_pos != page->page_count)) {
+ /*
+ * If the current page is the first page we are
+ * looking at and we are reusing this page then
+ * it can be either the first or last page of a
+ * transfer. Otherwise it can only be the first.
+ */
+ goto check_tail;
+ }
+ } else if (le16_to_cpu(page->page_count) != page_cnt ||
+ le16_to_cpu(page->page_pos) != page_pos + 1) {
+ /*
+ * The page position better be 1 more than the last page
+ * position and the page count better match
+ */
+ goto check_tail;
+ }
+
+ /*
+ * We have a valid page the file and may have a valid page
+ * the tail copy area
+ * If the tail page was written after the page the file then
+ * break of the loop
+ */
+ if (tail_page &&
+ le64_to_cpu(tail_page->record_hdr.last_end_lsn) > lsn_cur) {
+ /* Remember if we will replace the page */
+ replace_page = true;
+ goto check_tail;
+ }
+
+ tail_page = NULL;
+
+ if (is_log_record_end(page)) {
+ /*
+ * Since we have read this page we know the sequence number
+ * is the same as our expected value
+ */
+ log->seq_num = expected_seq;
+ log->last_lsn = le64_to_cpu(page->record_hdr.last_end_lsn);
+ log->ra->current_lsn = page->record_hdr.last_end_lsn;
+ log->l_flags &= ~NTFSLOG_NO_LAST_LSN;
+
+ /*
+ * If there is room on this page for another header then
+ * remember we want to reuse the page
+ */
+ if (log->record_header_len <=
+ log->page_size -
+ le16_to_cpu(page->record_hdr.next_record_off)) {
+ log->l_flags |= NTFSLOG_REUSE_TAIL;
+ log->next_page = curpage_off;
+ } else {
+ log->l_flags &= ~NTFSLOG_REUSE_TAIL;
+ log->next_page = nextpage_off;
+ }
+
+ /* Remember if we wrapped the log file */
+ if (wrapped_file)
+ log->l_flags |= NTFSLOG_WRAPPED;
+ }
+
+ /*
+ * Remember the last page count and position.
+ * Also remember the last known lsn
+ */
+ page_cnt = le16_to_cpu(page->page_count);
+ page_pos = le16_to_cpu(page->page_pos);
+ last_ok_lsn = le64_to_cpu(page->rhdr.lsn);
+
+next_page_1:
+
+ if (wrapped) {
+ expected_seq += 1;
+ wrapped_file = 1;
+ }
+
+ curpage_off = nextpage_off;
+ ntfs_free(page);
+ page = NULL;
+ reuse_page = 0;
+ goto next_page;
+
+check_tail:
+ if (tail_page) {
+ log->seq_num = expected_seq;
+ log->last_lsn = le64_to_cpu(tail_page->record_hdr.last_end_lsn);
+ log->ra->current_lsn = tail_page->record_hdr.last_end_lsn;
+ log->l_flags &= ~NTFSLOG_NO_LAST_LSN;
+
+ if (log->page_size -
+ le16_to_cpu(
+ tail_page->record_hdr.next_record_off) >=
+ log->record_header_len) {
+ log->l_flags |= NTFSLOG_REUSE_TAIL;
+ log->next_page = curpage_off;
+ } else {
+ log->l_flags &= ~NTFSLOG_REUSE_TAIL;
+ log->next_page = nextpage_off;
+ }
+
+ if (wrapped)
+ log->l_flags |= NTFSLOG_WRAPPED;
+ }
+
+ /* Remember that the partial IO will start at the next page */
+ second_off = nextpage_off;
+
+ /*
+ * If the next page is the first page of the file then update
+ * the sequence number for log records which begon the next page
+ */
+ if (wrapped)
+ expected_seq += 1;
+
+ /*
+ * If we have a tail copy or are performing single page I/O we can
+ * immediately look at the next page
+ */
+ if (replace_page || (log->ra->flags & RESTART_SINGLE_PAGE_IO)) {
+ page_cnt = 2;
+ page_pos = 1;
+ goto check_valid;
+ }
+
+ if (page_pos != page_cnt)
+ goto check_valid;
+ /*
+ * If the next page causes us to wrap to the beginning of the log
+ * file then we know which page to check next.
+ */
+ if (wrapped) {
+ page_cnt = 2;
+ page_pos = 1;
+ goto check_valid;
+ }
+
+ cur_pos = 2;
+
+next_test_page:
+ ntfs_free(tst_page);
+ tst_page = NULL;
+
+ /* Walk through the file, reading log pages */
+ err = read_log_page(log, nextpage_off, &tst_page, &usa_error);
+
+ /*
+ * If we get a USA error then assume that we correctly found
+ * the end of the original transfer
+ */
+ if (usa_error)
+ goto file_is_valid;
+
+ /*
+ * If we were able to read the page, we examine it to see if it
+ * is the same or different Io block
+ */
+ if (err)
+ goto next_test_page_1;
+
+ if (le16_to_cpu(tst_page->page_pos) == cur_pos &&
+ check_subseq_log_page(log, tst_page, nextpage_off, expected_seq)) {
+ page_cnt = le16_to_cpu(tst_page->page_count) + 1;
+ page_pos = le16_to_cpu(tst_page->page_pos);
+ goto check_valid;
+ } else {
+ goto file_is_valid;
+ }
+
+next_test_page_1:
+
+ nextpage_off = next_page_off(log, curpage_off);
+ wrapped = nextpage_off == log->first_page;
+
+ if (wrapped) {
+ expected_seq += 1;
+ page_cnt = 2;
+ page_pos = 1;
+ }
+
+ cur_pos += 1;
+ part_io_count += 1;
+ if (!wrapped)
+ goto next_test_page;
+
+check_valid:
+ /* Skip over the remaining pages this transfer */
+ remain_pages = page_cnt - page_pos - 1;
+ part_io_count += remain_pages;
+
+ while (remain_pages--) {
+ nextpage_off = next_page_off(log, curpage_off);
+ wrapped = nextpage_off == log->first_page;
+
+ if (wrapped)
+ expected_seq += 1;
+ }
+
+ /* Call our routine to check this log page */
+ ntfs_free(tst_page);
+ tst_page = NULL;
+
+ err = read_log_page(log, nextpage_off, &tst_page, &usa_error);
+ if (!err && !usa_error &&
+ check_subseq_log_page(log, tst_page, nextpage_off, expected_seq)) {
+ err = -EINVAL;
+ goto out;
+ }
+
+file_is_valid:
+
+ /* We have a valid file */
+ if (page_off1 || tail_page) {
+ struct RECORD_PAGE_HDR *tmp_page;
+
+ if (sb_rdonly(log->ni->mi.sbi->sb)) {
+ err = -EROFS;
+ goto out;
+ }
+
+ if (page_off1) {
+ tmp_page = Add2Ptr(page_bufs, page_off1 - page_off);
+ tails -= (page_off1 - page_off) / log->page_size;
+ if (!tail_page)
+ tails -= 1;
+ } else {
+ tmp_page = tail_page;
+ tails = 1;
+ }
+
+ while (tails--) {
+ u64 off = hdr_file_off(log, tmp_page);
+
+ if (!page) {
+ page = ntfs_malloc(log->page_size);
+ if (!page)
+ return -ENOMEM;
+ }
+
+ /*
+ * Correct page and copy the data from this page
+ * into it and flush it to disk
+ */
+ memcpy(page, tmp_page, log->page_size);
+
+ /* Fill last flushed lsn value flush the page */
+ if (log->major_ver < 2)
+ page->rhdr.lsn = page->record_hdr.last_end_lsn;
+ else
+ page->file_off = 0;
+
+ page->page_pos = page->page_count = cpu_to_le16(1);
+
+ ntfs_fix_pre_write(&page->rhdr, log->page_size);
+
+ err = ntfs_sb_write_run(log->ni->mi.sbi,
+ &log->ni->file.run, off, page,
+ log->page_size);
+
+ if (err)
+ goto out;
+
+ if (part_io_count && second_off == off) {
+ second_off += log->page_size;
+ part_io_count -= 1;
+ }
+
+ tmp_page = Add2Ptr(tmp_page, log->page_size);
+ }
+ }
+
+ if (part_io_count) {
+ if (sb_rdonly(log->ni->mi.sbi->sb)) {
+ err = -EROFS;
+ goto out;
+ }
+ }
+
+out:
+ ntfs_free(second_tail);
+ ntfs_free(first_tail);
+ ntfs_free(page);
+ ntfs_free(tst_page);
+ ntfs_free(page_bufs);
+
+ return err;
+}
+
+/*
+ * read_log_rec_buf
+ *
+ * copies a log record from the file to a buffer
+ * The log record may span several log pages and may even wrap the file
+ */
+static int read_log_rec_buf(struct ntfs_log *log,
+ const struct LFS_RECORD_HDR *rh, void *buffer)
+{
+ int err;
+ struct RECORD_PAGE_HDR *ph = NULL;
+ u64 lsn = le64_to_cpu(rh->this_lsn);
+ u32 vbo = lsn_to_vbo(log, lsn) & ~log->page_mask;
+ u32 off = lsn_to_page_off(log, lsn) + log->record_header_len;
+ u32 data_len = le32_to_cpu(rh->client_data_len);
+
+ /*
+ * While there are more bytes to transfer,
+ * we continue to attempt to perform the read
+ */
+ for (;;) {
+ bool usa_error;
+ u32 tail = log->page_size - off;
+
+ if (tail >= data_len)
+ tail = data_len;
+
+ data_len -= tail;
+
+ err = read_log_page(log, vbo, &ph, &usa_error);
+ if (err)
+ goto out;
+
+ /*
+ * The last lsn on this page better be greater or equal
+ * to the lsn we are copying
+ */
+ if (lsn > le64_to_cpu(ph->rhdr.lsn)) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ memcpy(buffer, Add2Ptr(ph, off), tail);
+
+ /* If there are no more bytes to transfer, we exit the loop */
+ if (!data_len) {
+ if (!is_log_record_end(ph) ||
+ lsn > le64_to_cpu(ph->record_hdr.last_end_lsn)) {
+ err = -EINVAL;
+ goto out;
+ }
+ break;
+ }
+
+ if (ph->rhdr.lsn == ph->record_hdr.last_end_lsn ||
+ lsn > le64_to_cpu(ph->rhdr.lsn)) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ vbo = next_page_off(log, vbo);
+ off = log->data_off;
+
+ /*
+ * adjust our pointer the user's buffer to transfer
+ * the next block to
+ */
+ buffer = Add2Ptr(buffer, tail);
+ }
+
+out:
+ ntfs_free(ph);
+ return err;
+}
+
+static int read_rst_area(struct ntfs_log *log, struct NTFS_RESTART **rst_,
+ u64 *lsn)
+{
+ int err;
+ struct LFS_RECORD_HDR *rh = NULL;
+ const struct CLIENT_REC *cr =
+ Add2Ptr(log->ra, le16_to_cpu(log->ra->client_off));
+ u64 lsnr, lsnc = le64_to_cpu(cr->restart_lsn);
+ u32 len;
+ struct NTFS_RESTART *rst;
+
+ *lsn = 0;
+ *rst_ = NULL;
+
+ /* If the client doesn't have a restart area, go ahead and exit now */
+ if (!lsnc)
+ return 0;
+
+ err = read_log_page(log, lsn_to_vbo(log, lsnc),
+ (struct RECORD_PAGE_HDR **)&rh, NULL);
+ if (err)
+ return err;
+
+ rst = NULL;
+ lsnr = le64_to_cpu(rh->this_lsn);
+
+ if (lsnc != lsnr) {
+ /* If the lsn values don't match, then the disk is corrupt */
+ err = -EINVAL;
+ goto out;
+ }
+
+ *lsn = lsnr;
+ len = le32_to_cpu(rh->client_data_len);
+
+ if (!len) {
+ err = 0;
+ goto out;
+ }
+
+ if (len < sizeof(struct NTFS_RESTART)) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ rst = ntfs_malloc(len);
+ if (!rst) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ /* Copy the data into the 'rst' buffer */
+ err = read_log_rec_buf(log, rh, rst);
+ if (err)
+ goto out;
+
+ *rst_ = rst;
+ rst = NULL;
+
+out:
+ ntfs_free(rh);
+ ntfs_free(rst);
+
+ return err;
+}
+
+static int find_log_rec(struct ntfs_log *log, u64 lsn, struct lcb *lcb)
+{
+ int err;
+ struct LFS_RECORD_HDR *rh = lcb->lrh;
+ u32 rec_len, len;
+
+ /* Read the record header for this lsn */
+ if (!rh) {
+ err = read_log_page(log, lsn_to_vbo(log, lsn),
+ (struct RECORD_PAGE_HDR **)&rh, NULL);
+
+ lcb->lrh = rh;
+ if (err)
+ return err;
+ }
+
+ /*
+ * If the lsn the log record doesn't match the desired
+ * lsn then the disk is corrupt
+ */
+ if (lsn != le64_to_cpu(rh->this_lsn))
+ return -EINVAL;
+
+ len = le32_to_cpu(rh->client_data_len);
+
+ /*
+ * check that the length field isn't greater than the total
+ * available space the log file
+ */
+ rec_len = len + log->record_header_len;
+ if (rec_len >= log->total_avail)
+ return -EINVAL;
+
+ /*
+ * If the entire log record is on this log page,
+ * put a pointer to the log record the context block
+ */
+ if (rh->flags & LOG_RECORD_MULTI_PAGE) {
+ void *lr = ntfs_malloc(len);
+
+ if (!lr)
+ return -ENOMEM;
+
+ lcb->log_rec = lr;
+ lcb->alloc = true;
+
+ /* Copy the data into the buffer returned */
+ err = read_log_rec_buf(log, rh, lr);
+ if (err)
+ return err;
+ } else {
+ /* If beyond the end of the current page -> an error */
+ u32 page_off = lsn_to_page_off(log, lsn);
+
+ if (page_off + len + log->record_header_len > log->page_size)
+ return -EINVAL;
+
+ lcb->log_rec = Add2Ptr(rh, sizeof(struct LFS_RECORD_HDR));
+ lcb->alloc = false;
+ }
+
+ return 0;
+}
+
+/*
+ * read_log_rec_lcb
+ *
+ * initiates the query operation.
+ */
+static int read_log_rec_lcb(struct ntfs_log *log, u64 lsn, u32 ctx_mode,
+ struct lcb **lcb_)
+{
+ int err;
+ const struct CLIENT_REC *cr;
+ struct lcb *lcb;
+
+ switch (ctx_mode) {
+ case lcb_ctx_undo_next:
+ case lcb_ctx_prev:
+ case lcb_ctx_next:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* check that the given lsn is the legal range for this client */
+ cr = Add2Ptr(log->ra, le16_to_cpu(log->ra->client_off));
+
+ if (!verify_client_lsn(log, cr, lsn))
+ return -EINVAL;
+
+ lcb = ntfs_zalloc(sizeof(struct lcb));
+ if (!lcb)
+ return -ENOMEM;
+ lcb->client = log->client_id;
+ lcb->ctx_mode = ctx_mode;
+
+ /* Find the log record indicated by the given lsn */
+ err = find_log_rec(log, lsn, lcb);
+ if (err)
+ goto out;
+
+ *lcb_ = lcb;
+ return 0;
+
+out:
+ lcb_put(lcb);
+ *lcb_ = NULL;
+ return err;
+}
+
+/*
+ * find_client_next_lsn
+ *
+ * attempt to find the next lsn to return to a client based on the context mode.
+ */
+static int find_client_next_lsn(struct ntfs_log *log, struct lcb *lcb, u64 *lsn)
+{
+ int err;
+ u64 next_lsn;
+ struct LFS_RECORD_HDR *hdr;
+
+ hdr = lcb->lrh;
+ *lsn = 0;
+
+ if (lcb_ctx_next != lcb->ctx_mode)
+ goto check_undo_next;
+
+ /* Loop as long as another lsn can be found */
+ for (;;) {
+ u64 current_lsn;
+
+ err = next_log_lsn(log, hdr, ¤t_lsn);
+ if (err)
+ goto out;
+
+ if (!current_lsn)
+ break;
+
+ if (hdr != lcb->lrh)
+ ntfs_free(hdr);
+
+ hdr = NULL;
+ err = read_log_page(log, lsn_to_vbo(log, current_lsn),
+ (struct RECORD_PAGE_HDR **)&hdr, NULL);
+ if (err)
+ goto out;
+
+ if (memcmp(&hdr->client, &lcb->client,
+ sizeof(struct CLIENT_ID))) {
+ /*err = -EINVAL; */
+ } else if (LfsClientRecord == hdr->record_type) {
+ ntfs_free(lcb->lrh);
+ lcb->lrh = hdr;
+ *lsn = current_lsn;
+ return 0;
+ }
+ }
+
+out:
+ if (hdr != lcb->lrh)
+ ntfs_free(hdr);
+ return err;
+
+check_undo_next:
+ if (lcb_ctx_undo_next == lcb->ctx_mode)
+ next_lsn = le64_to_cpu(hdr->client_undo_next_lsn);
+ else if (lcb_ctx_prev == lcb->ctx_mode)
+ next_lsn = le64_to_cpu(hdr->client_prev_lsn);
+ else
+ return 0;
+
+ if (!next_lsn)
+ return 0;
+
+ if (!verify_client_lsn(
+ log, Add2Ptr(log->ra, le16_to_cpu(log->ra->client_off)),
+ next_lsn))
+ return 0;
+
+ hdr = NULL;
+ err = read_log_page(log, lsn_to_vbo(log, next_lsn),
+ (struct RECORD_PAGE_HDR **)&hdr, NULL);
+ if (err)
+ return err;
+ ntfs_free(lcb->lrh);
+ lcb->lrh = hdr;
+
+ *lsn = next_lsn;
+
+ return 0;
+}
+
+static int read_next_log_rec(struct ntfs_log *log, struct lcb *lcb, u64 *lsn)
+{
+ int err;
+
+ err = find_client_next_lsn(log, lcb, lsn);
+ if (err)
+ return err;
+
+ if (!*lsn)
+ return 0;
+
+ if (lcb->alloc)
+ ntfs_free(lcb->log_rec);
+
+ lcb->log_rec = NULL;
+ lcb->alloc = false;
+ ntfs_free(lcb->lrh);
+ lcb->lrh = NULL;
+
+ return find_log_rec(log, *lsn, lcb);
+}
+
+static inline bool check_index_header(const struct INDEX_HDR *hdr, size_t bytes)
+{
+ __le16 mask;
+ u32 min_de, de_off, used, total;
+ const struct NTFS_DE *e;
+
+ if (hdr_has_subnode(hdr)) {
+ min_de = sizeof(struct NTFS_DE) + sizeof(u64);
+ mask = NTFS_IE_HAS_SUBNODES;
+ } else {
+ min_de = sizeof(struct NTFS_DE);
+ mask = 0;
+ }
+
+ de_off = le32_to_cpu(hdr->de_off);
+ used = le32_to_cpu(hdr->used);
+ total = le32_to_cpu(hdr->total);
+
+ if (de_off > bytes - min_de || used > bytes || total > bytes ||
+ de_off + min_de > used || used > total) {
+ return false;
+ }
+
+ e = Add2Ptr(hdr, de_off);
+ for (;;) {
+ u16 esize = le16_to_cpu(e->size);
+ struct NTFS_DE *next = Add2Ptr(e, esize);
+
+ if (esize < min_de || PtrOffset(hdr, next) > used ||
+ (e->flags & NTFS_IE_HAS_SUBNODES) != mask) {
+ return false;
+ }
+
+ if (de_is_last(e))
+ break;
+
+ e = next;
+ }
+
+ return true;
+}
+
+static inline bool check_index_buffer(const struct INDEX_BUFFER *ib, u32 bytes)
+{
+ u16 fo;
+ const struct NTFS_RECORD_HEADER *r = &ib->rhdr;
+
+ if (r->sign != NTFS_INDX_SIGNATURE)
+ return false;
+
+ fo = (SECTOR_SIZE - ((bytes >> SECTOR_SHIFT) + 1) * sizeof(short));
+
+ if (le16_to_cpu(r->fix_off) > fo)
+ return false;
+
+ if ((le16_to_cpu(r->fix_num) - 1) * SECTOR_SIZE != bytes)
+ return false;
+
+ return check_index_header(&ib->ihdr,
+ bytes - offsetof(struct INDEX_BUFFER, ihdr));
+}
+
+static inline bool check_index_root(const struct ATTRIB *attr,
+ struct ntfs_sb_info *sbi)
+{
+ bool ret;
+ const struct INDEX_ROOT *root = resident_data(attr);
+ u8 index_bits = le32_to_cpu(root->index_block_size) >= sbi->cluster_size
+ ? sbi->cluster_bits
+ : SECTOR_SHIFT;
+ u8 block_clst = root->index_block_clst;
+
+ if (le32_to_cpu(attr->res.data_size) < sizeof(struct INDEX_ROOT) ||
+ (root->type != ATTR_NAME && root->type != ATTR_ZERO) ||
+ (root->type == ATTR_NAME &&
+ root->rule != NTFS_COLLATION_TYPE_FILENAME) ||
+ (le32_to_cpu(root->index_block_size) !=
+ (block_clst << index_bits)) ||
+ (block_clst != 1 && block_clst != 2 && block_clst != 4 &&
+ block_clst != 8 && block_clst != 0x10 && block_clst != 0x20 &&
+ block_clst != 0x40 && block_clst != 0x80)) {
+ return false;
+ }
+
+ ret = check_index_header(&root->ihdr,
+ le32_to_cpu(attr->res.data_size) -
+ offsetof(struct INDEX_ROOT, ihdr));
+ return ret;
+}
+
+static inline bool check_attr(const struct MFT_REC *rec,
+ const struct ATTRIB *attr,
+ struct ntfs_sb_info *sbi)
+{
+ u32 asize = le32_to_cpu(attr->size);
+ u32 rsize = 0;
+ u64 dsize, svcn, evcn;
+ u16 run_off;
+
+ /* Check the fixed part of the attribute record header */
+ if (asize >= sbi->record_size ||
+ asize + PtrOffset(rec, attr) >= sbi->record_size ||
+ (attr->name_len &&
+ le16_to_cpu(attr->name_off) + attr->name_len * sizeof(short) >
+ asize)) {
+ return false;
+ }
+
+ /* Check the attribute fields */
+ switch (attr->non_res) {
+ case 0:
+ rsize = le32_to_cpu(attr->res.data_size);
+ if (rsize >= asize ||
+ le16_to_cpu(attr->res.data_off) + rsize > asize) {
+ return false;
+ }
+ break;
+
+ case 1:
+ dsize = le64_to_cpu(attr->nres.data_size);
+ svcn = le64_to_cpu(attr->nres.svcn);
+ evcn = le64_to_cpu(attr->nres.evcn);
+ run_off = le16_to_cpu(attr->nres.run_off);
+
+ if (svcn > evcn + 1 || run_off >= asize ||
+ le64_to_cpu(attr->nres.valid_size) > dsize ||
+ dsize > le64_to_cpu(attr->nres.alloc_size)) {
+ return false;
+ }
+
+ if (run_unpack(NULL, sbi, 0, svcn, evcn, svcn,
+ Add2Ptr(attr, run_off), asize - run_off) < 0) {
+ return false;
+ }
+
+ return true;
+
+ default:
+ return false;
+ }
+
+ switch (attr->type) {
+ case ATTR_NAME:
+ if (fname_full_size(Add2Ptr(
+ attr, le16_to_cpu(attr->res.data_off))) > asize) {
+ return false;
+ }
+ break;
+
+ case ATTR_ROOT:
+ return check_index_root(attr, sbi);
+
+ case ATTR_STD:
+ if (rsize < sizeof(struct ATTR_STD_INFO5) &&
+ rsize != sizeof(struct ATTR_STD_INFO)) {
+ return false;
+ }
+ break;
+
+ case ATTR_LIST:
+ case ATTR_ID:
+ case ATTR_SECURE:
+ case ATTR_LABEL:
+ case ATTR_VOL_INFO:
+ case ATTR_DATA:
+ case ATTR_ALLOC:
+ case ATTR_BITMAP:
+ case ATTR_REPARSE:
+ case ATTR_EA_INFO:
+ case ATTR_EA:
+ case ATTR_PROPERTYSET:
+ case ATTR_LOGGED_UTILITY_STREAM:
+ break;
+
+ default:
+ return false;
+ }
+
+ return true;
+}
+
+static inline bool check_file_record(const struct MFT_REC *rec,
+ const struct MFT_REC *rec2,
+ struct ntfs_sb_info *sbi)
+{
+ const struct ATTRIB *attr;
+ u16 fo = le16_to_cpu(rec->rhdr.fix_off);
+ u16 fn = le16_to_cpu(rec->rhdr.fix_num);
+ u16 ao = le16_to_cpu(rec->attr_off);
+ u32 rs = sbi->record_size;
+
+ /* check the file record header for consistency */
+ if (rec->rhdr.sign != NTFS_FILE_SIGNATURE ||
+ fo > (SECTOR_SIZE - ((rs >> SECTOR_SHIFT) + 1) * sizeof(short)) ||
+ (fn - 1) * SECTOR_SIZE != rs || ao < MFTRECORD_FIXUP_OFFSET_1 ||
+ ao > sbi->record_size - SIZEOF_RESIDENT || !is_rec_inuse(rec) ||
+ le32_to_cpu(rec->total) != rs) {
+ return false;
+ }
+
+ /* Loop to check all of the attributes */
+ for (attr = Add2Ptr(rec, ao); attr->type != ATTR_END;
+ attr = Add2Ptr(attr, le32_to_cpu(attr->size))) {
+ if (check_attr(rec, attr, sbi))
+ continue;
+ return false;
+ }
+
+ return true;
+}
+
+static inline int check_lsn(const struct NTFS_RECORD_HEADER *hdr,
+ const u64 *rlsn)
+{
+ u64 lsn;
+
+ if (!rlsn)
+ return true;
+
+ lsn = le64_to_cpu(hdr->lsn);
+
+ if (hdr->sign == NTFS_HOLE_SIGNATURE)
+ return false;
+
+ if (*rlsn > lsn)
+ return true;
+
+ return false;
+}
+
+static inline bool check_if_attr(const struct MFT_REC *rec,
+ const struct LOG_REC_HDR *lrh)
+{
+ u16 ro = le16_to_cpu(lrh->record_off);
+ u16 o = le16_to_cpu(rec->attr_off);
+ const struct ATTRIB *attr = Add2Ptr(rec, o);
+
+ while (o < ro) {
+ u32 asize;
+
+ if (attr->type == ATTR_END)
+ break;
+
+ asize = le32_to_cpu(attr->size);
+ if (!asize)
+ break;
+
+ o += asize;
+ attr = Add2Ptr(attr, asize);
+ }
+
+ return o == ro;
+}
+
+static inline bool check_if_index_root(const struct MFT_REC *rec,
+ const struct LOG_REC_HDR *lrh)
+{
+ u16 ro = le16_to_cpu(lrh->record_off);
+ u16 o = le16_to_cpu(rec->attr_off);
+ const struct ATTRIB *attr = Add2Ptr(rec, o);
+
+ while (o < ro) {
+ u32 asize;
+
+ if (attr->type == ATTR_END)
+ break;
+
+ asize = le32_to_cpu(attr->size);
+ if (!asize)
+ break;
+
+ o += asize;
+ attr = Add2Ptr(attr, asize);
+ }
+
+ return o == ro && attr->type == ATTR_ROOT;
+}
+
+static inline bool check_if_root_index(const struct ATTRIB *attr,
+ const struct INDEX_HDR *hdr,
+ const struct LOG_REC_HDR *lrh)
+{
+ u16 ao = le16_to_cpu(lrh->attr_off);
+ u32 de_off = le32_to_cpu(hdr->de_off);
+ u32 o = PtrOffset(attr, hdr) + de_off;
+ const struct NTFS_DE *e = Add2Ptr(hdr, de_off);
+ u32 asize = le32_to_cpu(attr->size);
+
+ while (o < ao) {
+ u16 esize;
+
+ if (o >= asize)
+ break;
+
+ esize = le16_to_cpu(e->size);
+ if (!esize)
+ break;
+
+ o += esize;
+ e = Add2Ptr(e, esize);
+ }
+
+ return o == ao;
+}
+
+static inline bool check_if_alloc_index(const struct INDEX_HDR *hdr,
+ u32 attr_off)
+{
+ u32 de_off = le32_to_cpu(hdr->de_off);
+ u32 o = offsetof(struct INDEX_BUFFER, ihdr) + de_off;
+ const struct NTFS_DE *e = Add2Ptr(hdr, de_off);
+ u32 used = le32_to_cpu(hdr->used);
+
+ while (o < attr_off) {
+ u16 esize;
+
+ if (de_off >= used)
+ break;
+
+ esize = le16_to_cpu(e->size);
+ if (!esize)
+ break;
+
+ o += esize;
+ de_off += esize;
+ e = Add2Ptr(e, esize);
+ }
+
+ return o == attr_off;
+}
+
+static inline void change_attr_size(struct MFT_REC *rec, struct ATTRIB *attr,
+ u32 nsize)
+{
+ u32 asize = le32_to_cpu(attr->size);
+ int dsize = nsize - asize;
+ u8 *next = Add2Ptr(attr, asize);
+ u32 used = le32_to_cpu(rec->used);
+
+ memmove(Add2Ptr(attr, nsize), next, used - PtrOffset(rec, next));
+
+ rec->used = cpu_to_le32(used + dsize);
+ attr->size = cpu_to_le32(nsize);
+}
+
+struct OpenAttr {
+ struct ATTRIB *attr;
+ struct runs_tree *run1;
+ struct runs_tree run0;
+ struct ntfs_inode *ni;
+ // CLST rno;
+};
+
+/* Returns 0 if 'attr' has the same type and name */
+static inline int cmp_type_and_name(const struct ATTRIB *a1,
+ const struct ATTRIB *a2)
+{
+ return a1->type != a2->type || a1->name_len != a2->name_len ||
+ (a1->name_len && memcmp(attr_name(a1), attr_name(a2),
+ a1->name_len * sizeof(short)));
+}
+
+static struct OpenAttr *find_loaded_attr(struct ntfs_log *log,
+ const struct ATTRIB *attr, CLST rno)
+{
+ struct OPEN_ATTR_ENRTY *oe = NULL;
+
+ while ((oe = enum_rstbl(log->open_attr_tbl, oe))) {
+ struct OpenAttr *op_attr;
+
+ if (ino_get(&oe->ref) != rno)
+ continue;
+
+ op_attr = (struct OpenAttr *)oe->ptr;
+ if (!cmp_type_and_name(op_attr->attr, attr))
+ return op_attr;
+ }
+ return NULL;
+}
+
+static struct ATTRIB *attr_create_nonres_log(struct ntfs_sb_info *sbi,
+ enum ATTR_TYPE type, u64 size,
+ const u16 *name, size_t name_len,
+ __le16 flags)
+{
+ struct ATTRIB *attr;
+ u32 name_size = QuadAlign(name_len * sizeof(short));
+ bool is_ext = flags & (ATTR_FLAG_COMPRESSED | ATTR_FLAG_SPARSED);
+ u32 asize = name_size +
+ (is_ext ? SIZEOF_NONRESIDENT_EX : SIZEOF_NONRESIDENT);
+
+ attr = ntfs_zalloc(asize);
+ if (!attr)
+ return NULL;
+
+ attr->type = type;
+ attr->size = cpu_to_le32(asize);
+ attr->flags = flags;
+ attr->non_res = 1;
+ attr->name_len = name_len;
+
+ attr->nres.evcn = cpu_to_le64((u64)bytes_to_cluster(sbi, size) - 1);
+ attr->nres.alloc_size = cpu_to_le64(ntfs_up_cluster(sbi, size));
+ attr->nres.data_size = cpu_to_le64(size);
+ attr->nres.valid_size = attr->nres.data_size;
+ if (is_ext) {
+ attr->name_off = SIZEOF_NONRESIDENT_EX_LE;
+ if (is_attr_compressed(attr))
+ attr->nres.c_unit = COMPRESSION_UNIT;
+
+ attr->nres.run_off =
+ cpu_to_le16(SIZEOF_NONRESIDENT_EX + name_size);
+ memcpy(Add2Ptr(attr, SIZEOF_NONRESIDENT_EX), name,
+ name_len * sizeof(short));
+ } else {
+ attr->name_off = SIZEOF_NONRESIDENT_LE;
+ attr->nres.run_off =
+ cpu_to_le16(SIZEOF_NONRESIDENT + name_size);
+ memcpy(Add2Ptr(attr, SIZEOF_NONRESIDENT), name,
+ name_len * sizeof(short));
+ }
+
+ return attr;
+}
+
+/*
+ * do_action
+ *
+ * common routine for the Redo and Undo Passes
+ * If rlsn is NULL then undo
+ */
+static int do_action(struct ntfs_log *log, struct OPEN_ATTR_ENRTY *oe,
+ const struct LOG_REC_HDR *lrh, u32 op, void *data,
+ u32 dlen, u32 rec_len, const u64 *rlsn)
+{
+ int err = 0;
+ struct ntfs_sb_info *sbi = log->ni->mi.sbi;
+ struct inode *inode = NULL, *inode_parent;
+ struct mft_inode *mi = NULL, *mi2_child = NULL;
+ CLST rno = 0, rno_base = 0;
+ struct INDEX_BUFFER *ib = NULL;
+ struct MFT_REC *rec = NULL;
+ struct ATTRIB *attr = NULL, *attr2;
+ struct INDEX_HDR *hdr;
+ struct INDEX_ROOT *root;
+ struct NTFS_DE *e, *e1, *e2;
+ struct NEW_ATTRIBUTE_SIZES *new_sz;
+ struct ATTR_FILE_NAME *fname;
+ struct OpenAttr *oa, *oa2;
+ u32 nsize, t32, asize, used, esize, bmp_off, bmp_bits;
+ u16 id, id2;
+ u32 record_size = sbi->record_size;
+ u64 t64;
+ u16 roff = le16_to_cpu(lrh->record_off);
+ u16 aoff = le16_to_cpu(lrh->attr_off);
+ u64 lco = 0;
+ u64 cbo = (u64)le16_to_cpu(lrh->cluster_off) << SECTOR_SHIFT;
+ u64 tvo = le64_to_cpu(lrh->target_vcn) << sbi->cluster_bits;
+ u64 vbo = cbo + tvo;
+ void *buffer_le = NULL;
+ u32 bytes = 0;
+ bool a_dirty = false;
+ u16 data_off;
+
+ oa = oe->ptr;
+
+ /* Big switch to prepare */
+ switch (op) {
+ /* ============================================================
+ * Process MFT records, as described by the current log record
+ * ============================================================
+ */
+ case InitializeFileRecordSegment:
+ case DeallocateFileRecordSegment:
+ case WriteEndOfFileRecordSegment:
+ case CreateAttribute:
+ case DeleteAttribute:
+ case UpdateResidentValue:
+ case UpdateMappingPairs:
+ case SetNewAttributeSizes:
+ case AddIndexEntryRoot:
+ case DeleteIndexEntryRoot:
+ case SetIndexEntryVcnRoot:
+ case UpdateFileNameRoot:
+ case UpdateRecordDataRoot:
+ case ZeroEndOfFileRecord:
+ rno = vbo >> sbi->record_bits;
+ inode = ilookup(sbi->sb, rno);
+ if (inode) {
+ mi = &ntfs_i(inode)->mi;
+ } else if (op == InitializeFileRecordSegment) {
+ mi = ntfs_zalloc(sizeof(struct mft_inode));
+ if (!mi)
+ return -ENOMEM;
+ err = mi_format_new(mi, sbi, rno, 0, false);
+ if (err)
+ goto out;
+ } else {
+ /* read from disk */
+ err = mi_get(sbi, rno, &mi);
+ if (err)
+ return err;
+ }
+ rec = mi->mrec;
+
+ if (op == DeallocateFileRecordSegment)
+ goto skip_load_parent;
+
+ if (InitializeFileRecordSegment != op) {
+ if (rec->rhdr.sign == NTFS_BAAD_SIGNATURE)
+ goto dirty_vol;
+ if (!check_lsn(&rec->rhdr, rlsn))
+ goto out;
+ if (!check_file_record(rec, NULL, sbi))
+ goto dirty_vol;
+ attr = Add2Ptr(rec, roff);
+ }
+
+ if (is_rec_base(rec) || InitializeFileRecordSegment == op) {
+ rno_base = rno;
+ goto skip_load_parent;
+ }
+
+ rno_base = ino_get(&rec->parent_ref);
+ inode_parent = ntfs_iget5(sbi->sb, &rec->parent_ref, NULL);
+ if (IS_ERR(inode_parent))
+ goto skip_load_parent;
+
+ if (is_bad_inode(inode_parent)) {
+ iput(inode_parent);
+ goto skip_load_parent;
+ }
+
+ if (ni_load_mi_ex(ntfs_i(inode_parent), rno, &mi2_child)) {
+ iput(inode_parent);
+ } else {
+ if (mi2_child->mrec != mi->mrec)
+ memcpy(mi2_child->mrec, mi->mrec,
+ sbi->record_size);
+
+ if (inode)
+ iput(inode);
+ else if (mi)
+ mi_put(mi);
+
+ inode = inode_parent;
+ mi = mi2_child;
+ rec = mi2_child->mrec;
+ attr = Add2Ptr(rec, roff);
+ }
+
+skip_load_parent:
+ inode_parent = NULL;
+ break;
+
+ /* ============================================================
+ * Process attributes, as described by the current log record
+ * ============================================================
+ */
+ case UpdateNonresidentValue:
+ case AddIndexEntryAllocation:
+ case DeleteIndexEntryAllocation:
+ case WriteEndOfIndexBuffer:
+ case SetIndexEntryVcnAllocation:
+ case UpdateFileNameAllocation:
+ case SetBitsInNonresidentBitMap:
+ case ClearBitsInNonresidentBitMap:
+ case UpdateRecordDataAllocation:
+ attr = oa->attr;
+ bytes = UpdateNonresidentValue == op ? dlen : 0;
+ lco = (u64)le16_to_cpu(lrh->lcns_follow) << sbi->cluster_bits;
+
+ if (attr->type == ATTR_ALLOC) {
+ t32 = le32_to_cpu(oe->bytes_per_index);
+ if (bytes < t32)
+ bytes = t32;
+ }
+
+ if (!bytes)
+ bytes = lco - cbo;
+
+ bytes += roff;
+ if (attr->type == ATTR_ALLOC)
+ bytes = (bytes + 511) & ~511; // align
+
+ buffer_le = ntfs_malloc(bytes);
+ if (!buffer_le)
+ return -ENOMEM;
+
+ err = ntfs_read_run_nb(sbi, oa->run1, vbo, buffer_le, bytes,
+ NULL);
+ if (err)
+ goto out;
+
+ if (attr->type == ATTR_ALLOC && *(int *)buffer_le)
+ ntfs_fix_post_read(buffer_le, bytes, false);
+ break;
+
+ default:
+ WARN_ON(1);
+ }
+
+ /* Big switch to do operation */
+ switch (op) {
+ case InitializeFileRecordSegment:
+ if (roff + dlen > record_size)
+ goto dirty_vol;
+
+ memcpy(Add2Ptr(rec, roff), data, dlen);
+ mi->dirty = true;
+ break;
+
+ case DeallocateFileRecordSegment:
+ clear_rec_inuse(rec);
+ le16_add_cpu(&rec->seq, 1);
+ mi->dirty = true;
+ break;
+
+ case WriteEndOfFileRecordSegment:
+ attr2 = (struct ATTRIB *)data;
+ if (!check_if_attr(rec, lrh) || roff + dlen > record_size)
+ goto dirty_vol;
+
+ memmove(attr, attr2, dlen);
+ rec->used = cpu_to_le32(QuadAlign(roff + dlen));
+
+ mi->dirty = true;
+ break;
+
+ case CreateAttribute:
+ attr2 = (struct ATTRIB *)data;
+ asize = le32_to_cpu(attr2->size);
+ used = le32_to_cpu(rec->used);
+
+ if (!check_if_attr(rec, lrh) || dlen < SIZEOF_RESIDENT ||
+ !IsQuadAligned(asize) ||
+ Add2Ptr(attr2, asize) > Add2Ptr(lrh, rec_len) ||
+ dlen > record_size - used) {
+ goto dirty_vol;
+ }
+
+ memmove(Add2Ptr(attr, asize), attr, used - roff);
+ memcpy(attr, attr2, asize);
+
+ rec->used = cpu_to_le32(used + asize);
+ id = le16_to_cpu(rec->next_attr_id);
+ id2 = le16_to_cpu(attr2->id);
+ if (id <= id2)
+ rec->next_attr_id = cpu_to_le16(id2 + 1);
+ if (is_attr_indexed(attr))
+ le16_add_cpu(&rec->hard_links, 1);
+
+ oa2 = find_loaded_attr(log, attr, rno_base);
+ if (oa2) {
+ void *p2 = ntfs_memdup(attr, le32_to_cpu(attr->size));
+
+ if (p2) {
+ // run_close(oa2->run1);
+ ntfs_free(oa2->attr);
+ oa2->attr = p2;
+ }
+ }
+
+ mi->dirty = true;
+ break;
+
+ case DeleteAttribute:
+ asize = le32_to_cpu(attr->size);
+ used = le32_to_cpu(rec->used);
+
+ if (!check_if_attr(rec, lrh))
+ goto dirty_vol;
+
+ rec->used = cpu_to_le32(used - asize);
+ if (is_attr_indexed(attr))
+ le16_add_cpu(&rec->hard_links, -1);
+
+ memmove(attr, Add2Ptr(attr, asize), used - asize - roff);
+
+ mi->dirty = true;
+ break;
+
+ case UpdateResidentValue:
+ nsize = aoff + dlen;
+
+ if (!check_if_attr(rec, lrh))
+ goto dirty_vol;
+
+ asize = le32_to_cpu(attr->size);
+ used = le32_to_cpu(rec->used);
+
+ if (lrh->redo_len == lrh->undo_len) {
+ if (nsize > asize)
+ goto dirty_vol;
+ goto move_data;
+ }
+
+ if (nsize > asize && nsize - asize > record_size - used)
+ goto dirty_vol;
+
+ nsize = QuadAlign(nsize);
+ data_off = le16_to_cpu(attr->res.data_off);
+
+ if (nsize < asize) {
+ memmove(Add2Ptr(attr, aoff), data, dlen);
+ data = NULL; // To skip below memmove
+ }
+
+ memmove(Add2Ptr(attr, nsize), Add2Ptr(attr, asize),
+ used - le16_to_cpu(lrh->record_off) - asize);
+
+ rec->used = cpu_to_le32(used + nsize - asize);
+ attr->size = cpu_to_le32(nsize);
+ attr->res.data_size = cpu_to_le32(aoff + dlen - data_off);
+
+move_data:
+ if (data)
+ memmove(Add2Ptr(attr, aoff), data, dlen);
+
+ oa2 = find_loaded_attr(log, attr, rno_base);
+ if (oa2) {
+ void *p2 = ntfs_memdup(attr, le32_to_cpu(attr->size));
+
+ if (p2) {
+ // run_close(&oa2->run0);
+ oa2->run1 = &oa2->run0;
+ ntfs_free(oa2->attr);
+ oa2->attr = p2;
+ }
+ }
+
+ mi->dirty = true;
+ break;
+
+ case UpdateMappingPairs:
+ nsize = aoff + dlen;
+ asize = le32_to_cpu(attr->size);
+ used = le32_to_cpu(rec->used);
+
+ if (!check_if_attr(rec, lrh) || !attr->non_res ||
+ aoff < le16_to_cpu(attr->nres.run_off) || aoff > asize ||
+ (nsize > asize && nsize - asize > record_size - used)) {
+ goto dirty_vol;
+ }
+
+ nsize = QuadAlign(nsize);
+
+ memmove(Add2Ptr(attr, nsize), Add2Ptr(attr, asize),
+ used - le16_to_cpu(lrh->record_off) - asize);
+ rec->used = cpu_to_le32(used + nsize - asize);
+ attr->size = cpu_to_le32(nsize);
+ memmove(Add2Ptr(attr, aoff), data, dlen);
+
+ if (run_get_highest_vcn(le64_to_cpu(attr->nres.svcn),
+ attr_run(attr), &t64)) {
+ goto dirty_vol;
+ }
+
+ attr->nres.evcn = cpu_to_le64(t64);
+ oa2 = find_loaded_attr(log, attr, rno_base);
+ if (oa2 && oa2->attr->non_res)
+ oa2->attr->nres.evcn = attr->nres.evcn;
+
+ mi->dirty = true;
+ break;
+
+ case SetNewAttributeSizes:
+ new_sz = data;
+ if (!check_if_attr(rec, lrh) || !attr->non_res)
+ goto dirty_vol;
+
+ attr->nres.alloc_size = new_sz->alloc_size;
+ attr->nres.data_size = new_sz->data_size;
+ attr->nres.valid_size = new_sz->valid_size;
+
+ if (dlen >= sizeof(struct NEW_ATTRIBUTE_SIZES))
+ attr->nres.total_size = new_sz->total_size;
+
+ oa2 = find_loaded_attr(log, attr, rno_base);
+ if (oa2) {
+ void *p2 = ntfs_memdup(attr, le32_to_cpu(attr->size));
+
+ if (p2) {
+ ntfs_free(oa2->attr);
+ oa2->attr = p2;
+ }
+ }
+ mi->dirty = true;
+ break;
+
+ case AddIndexEntryRoot:
+ e = (struct NTFS_DE *)data;
+ esize = le16_to_cpu(e->size);
+ root = resident_data(attr);
+ hdr = &root->ihdr;
+ used = le32_to_cpu(hdr->used);
+
+ if (!check_if_index_root(rec, lrh) ||
+ !check_if_root_index(attr, hdr, lrh) ||
+ Add2Ptr(data, esize) > Add2Ptr(lrh, rec_len) ||
+ esize > le32_to_cpu(rec->total) - le32_to_cpu(rec->used)) {
+ goto dirty_vol;
+ }
+
+ e1 = Add2Ptr(attr, le16_to_cpu(lrh->attr_off));
+
+ change_attr_size(rec, attr, le32_to_cpu(attr->size) + esize);
+
+ memmove(Add2Ptr(e1, esize), e1,
+ PtrOffset(e1, Add2Ptr(hdr, used)));
+ memmove(e1, e, esize);
+
+ le32_add_cpu(&attr->res.data_size, esize);
+ hdr->used = cpu_to_le32(used + esize);
+ le32_add_cpu(&hdr->total, esize);
+
+ mi->dirty = true;
+ break;
+
+ case DeleteIndexEntryRoot:
+ root = resident_data(attr);
+ hdr = &root->ihdr;
+ used = le32_to_cpu(hdr->used);
+
+ if (!check_if_index_root(rec, lrh) ||
+ !check_if_root_index(attr, hdr, lrh)) {
+ goto dirty_vol;
+ }
+
+ e1 = Add2Ptr(attr, le16_to_cpu(lrh->attr_off));
+ esize = le16_to_cpu(e1->size);
+ e2 = Add2Ptr(e1, esize);
+
+ memmove(e1, e2, PtrOffset(e2, Add2Ptr(hdr, used)));
+
+ le32_sub_cpu(&attr->res.data_size, esize);
+ hdr->used = cpu_to_le32(used - esize);
+ le32_sub_cpu(&hdr->total, esize);
+
+ change_attr_size(rec, attr, le32_to_cpu(attr->size) - esize);
+
+ mi->dirty = true;
+ break;
+
+ case SetIndexEntryVcnRoot:
+ root = resident_data(attr);
+ hdr = &root->ihdr;
+
+ if (!check_if_index_root(rec, lrh) ||
+ !check_if_root_index(attr, hdr, lrh)) {
+ goto dirty_vol;
+ }
+
+ e = Add2Ptr(attr, le16_to_cpu(lrh->attr_off));
+
+ de_set_vbn_le(e, *(__le64 *)data);
+ mi->dirty = true;
+ break;
+
+ case UpdateFileNameRoot:
+ root = resident_data(attr);
+ hdr = &root->ihdr;
+
+ if (!check_if_index_root(rec, lrh) ||
+ !check_if_root_index(attr, hdr, lrh)) {
+ goto dirty_vol;
+ }
+
+ e = Add2Ptr(attr, le16_to_cpu(lrh->attr_off));
+ fname = (struct ATTR_FILE_NAME *)(e + 1);
+ memmove(&fname->dup, data, sizeof(fname->dup)); //
+ mi->dirty = true;
+ break;
+
+ case UpdateRecordDataRoot:
+ root = resident_data(attr);
+ hdr = &root->ihdr;
+
+ if (!check_if_index_root(rec, lrh) ||
+ !check_if_root_index(attr, hdr, lrh)) {
+ goto dirty_vol;
+ }
+
+ e = Add2Ptr(attr, le16_to_cpu(lrh->attr_off));
+
+ memmove(Add2Ptr(e, le16_to_cpu(e->view.data_off)), data, dlen);
+
+ mi->dirty = true;
+ break;
+
+ case ZeroEndOfFileRecord:
+ if (roff + dlen > record_size)
+ goto dirty_vol;
+
+ memset(attr, 0, dlen);
+ mi->dirty = true;
+ break;
+
+ case UpdateNonresidentValue:
+ if (lco < cbo + roff + dlen)
+ goto dirty_vol;
+
+ memcpy(Add2Ptr(buffer_le, roff), data, dlen);
+
+ a_dirty = true;
+ if (attr->type == ATTR_ALLOC)
+ ntfs_fix_pre_write(buffer_le, bytes);
+ break;
+
+ case AddIndexEntryAllocation:
+ ib = Add2Ptr(buffer_le, roff);
+ hdr = &ib->ihdr;
+ e = data;
+ esize = le16_to_cpu(e->size);
+ e1 = Add2Ptr(ib, aoff);
+
+ if (is_baad(&ib->rhdr))
+ goto dirty_vol;
+ if (!check_lsn(&ib->rhdr, rlsn))
+ goto out;
+
+ used = le32_to_cpu(hdr->used);
+
+ if (!check_index_buffer(ib, bytes) ||
+ !check_if_alloc_index(hdr, aoff) ||
+ Add2Ptr(e, esize) > Add2Ptr(lrh, rec_len) ||
+ used + esize > le32_to_cpu(hdr->total)) {
+ goto dirty_vol;
+ }
+
+ memmove(Add2Ptr(e1, esize), e1,
+ PtrOffset(e1, Add2Ptr(hdr, used)));
+ memcpy(e1, e, esize);
+
+ hdr->used = cpu_to_le32(used + esize);
+
+ a_dirty = true;
+
+ ntfs_fix_pre_write(&ib->rhdr, bytes);
+ break;
+
+ case DeleteIndexEntryAllocation:
+ ib = Add2Ptr(buffer_le, roff);
+ hdr = &ib->ihdr;
+ e = Add2Ptr(ib, aoff);
+ esize = le16_to_cpu(e->size);
+
+ if (is_baad(&ib->rhdr))
+ goto dirty_vol;
+ if (!check_lsn(&ib->rhdr, rlsn))
+ goto out;
+
+ if (!check_index_buffer(ib, bytes) ||
+ !check_if_alloc_index(hdr, aoff)) {
+ goto dirty_vol;
+ }
+
+ e1 = Add2Ptr(e, esize);
+ nsize = esize;
+ used = le32_to_cpu(hdr->used);
+
+ memmove(e, e1, PtrOffset(e1, Add2Ptr(hdr, used)));
+
+ hdr->used = cpu_to_le32(used - nsize);
+
+ a_dirty = true;
+
+ ntfs_fix_pre_write(&ib->rhdr, bytes);
+ break;
+
+ case WriteEndOfIndexBuffer:
+ ib = Add2Ptr(buffer_le, roff);
+ hdr = &ib->ihdr;
+ e = Add2Ptr(ib, aoff);
+
+ if (is_baad(&ib->rhdr))
+ goto dirty_vol;
+ if (!check_lsn(&ib->rhdr, rlsn))
+ goto out;
+ if (!check_index_buffer(ib, bytes) ||
+ !check_if_alloc_index(hdr, aoff) ||
+ aoff + dlen > offsetof(struct INDEX_BUFFER, ihdr) +
+ le32_to_cpu(hdr->total)) {
+ goto dirty_vol;
+ }
+
+ hdr->used = cpu_to_le32(dlen + PtrOffset(hdr, e));
+ memmove(e, data, dlen);
+
+ a_dirty = true;
+ ntfs_fix_pre_write(&ib->rhdr, bytes);
+ break;
+
+ case SetIndexEntryVcnAllocation:
+ ib = Add2Ptr(buffer_le, roff);
+ hdr = &ib->ihdr;
+ e = Add2Ptr(ib, aoff);
+
+ if (is_baad(&ib->rhdr))
+ goto dirty_vol;
+
+ if (!check_lsn(&ib->rhdr, rlsn))
+ goto out;
+ if (!check_index_buffer(ib, bytes) ||
+ !check_if_alloc_index(hdr, aoff)) {
+ goto dirty_vol;
+ }
+
+ de_set_vbn_le(e, *(__le64 *)data);
+
+ a_dirty = true;
+ ntfs_fix_pre_write(&ib->rhdr, bytes);
+ break;
+
+ case UpdateFileNameAllocation:
+ ib = Add2Ptr(buffer_le, roff);
+ hdr = &ib->ihdr;
+ e = Add2Ptr(ib, aoff);
+
+ if (is_baad(&ib->rhdr))
+ goto dirty_vol;
+
+ if (!check_lsn(&ib->rhdr, rlsn))
+ goto out;
+ if (!check_index_buffer(ib, bytes) ||
+ !check_if_alloc_index(hdr, aoff)) {
+ goto dirty_vol;
+ }
+
+ fname = (struct ATTR_FILE_NAME *)(e + 1);
+ memmove(&fname->dup, data, sizeof(fname->dup));
+
+ a_dirty = true;
+ ntfs_fix_pre_write(&ib->rhdr, bytes);
+ break;
+
+ case SetBitsInNonresidentBitMap:
+ bmp_off =
+ le32_to_cpu(((struct BITMAP_RANGE *)data)->bitmap_off);
+ bmp_bits = le32_to_cpu(((struct BITMAP_RANGE *)data)->bits);
+
+ if (cbo + (bmp_off + 7) / 8 > lco ||
+ cbo + ((bmp_off + bmp_bits + 7) / 8) > lco) {
+ goto dirty_vol;
+ }
+
+ __bitmap_set(Add2Ptr(buffer_le, roff), bmp_off, bmp_bits);
+ a_dirty = true;
+ break;
+
+ case ClearBitsInNonresidentBitMap:
+ bmp_off =
+ le32_to_cpu(((struct BITMAP_RANGE *)data)->bitmap_off);
+ bmp_bits = le32_to_cpu(((struct BITMAP_RANGE *)data)->bits);
+
+ if (cbo + (bmp_off + 7) / 8 > lco ||
+ cbo + ((bmp_off + bmp_bits + 7) / 8) > lco) {
+ goto dirty_vol;
+ }
+
+ __bitmap_clear(Add2Ptr(buffer_le, roff), bmp_off, bmp_bits);
+ a_dirty = true;
+ break;
+
+ case UpdateRecordDataAllocation:
+ ib = Add2Ptr(buffer_le, roff);
+ hdr = &ib->ihdr;
+ e = Add2Ptr(ib, aoff);
+
+ if (is_baad(&ib->rhdr))
+ goto dirty_vol;
+
+ if (!check_lsn(&ib->rhdr, rlsn))
+ goto out;
+ if (!check_index_buffer(ib, bytes) ||
+ !check_if_alloc_index(hdr, aoff)) {
+ goto dirty_vol;
+ }
+
+ memmove(Add2Ptr(e, le16_to_cpu(e->view.data_off)), data, dlen);
+
+ a_dirty = true;
+ ntfs_fix_pre_write(&ib->rhdr, bytes);
+ break;
+
+ default:
+ WARN_ON(1);
+ }
+
+ if (rlsn) {
+ __le64 t64 = cpu_to_le64(*rlsn);
+
+ if (rec)
+ rec->rhdr.lsn = t64;
+ if (ib)
+ ib->rhdr.lsn = t64;
+ }
+
+ if (mi && mi->dirty) {
+ err = mi_write(mi, 0);
+ if (err)
+ goto out;
+ }
+
+ if (a_dirty) {
+ attr = oa->attr;
+ err = ntfs_sb_write_run(sbi, oa->run1, vbo, buffer_le, bytes);
+ if (err)
+ goto out;
+ }
+
+out:
+
+ if (inode)
+ iput(inode);
+ else if (mi != mi2_child)
+ mi_put(mi);
+
+ ntfs_free(buffer_le);
+
+ return err;
+
+dirty_vol:
+ log->set_dirty = true;
+ goto out;
+}
+
+/*
+ * log_replay
+ *
+ * this function is called during mount operation
+ * it replays log and empties it
+ * initialized is set false if logfile contains '-1'
+ */
+int log_replay(struct ntfs_inode *ni, bool *initialized)
+{
+ int err;
+ struct ntfs_sb_info *sbi = ni->mi.sbi;
+ struct ntfs_log *log;
+
+ struct restart_info rst_info, rst_info2;
+ u64 rec_lsn, ra_lsn, checkpt_lsn = 0, rlsn = 0;
+ struct ATTR_NAME_ENTRY *attr_names = NULL;
+ struct ATTR_NAME_ENTRY *ane;
+ struct RESTART_TABLE *dptbl = NULL;
+ struct RESTART_TABLE *trtbl = NULL;
+ const struct RESTART_TABLE *rt;
+ struct RESTART_TABLE *oatbl = NULL;
+ struct inode *inode;
+ struct OpenAttr *oa;
+ struct ntfs_inode *ni_oe;
+ struct ATTRIB *attr = NULL;
+ u64 size, vcn, undo_next_lsn;
+ CLST rno, lcn, lcn0, len0, clen;
+ void *data;
+ struct NTFS_RESTART *rst = NULL;
+ struct lcb *lcb = NULL;
+ struct OPEN_ATTR_ENRTY *oe;
+ struct TRANSACTION_ENTRY *tr;
+ struct DIR_PAGE_ENTRY *dp;
+ u32 i, bytes_per_attr_entry;
+ u32 l_size = ni->vfs_inode.i_size;
+ u32 orig_file_size = l_size;
+ u32 page_size, vbo, tail, off, dlen;
+ u32 saved_len, rec_len, transact_id;
+ bool use_second_page;
+ struct RESTART_AREA *ra2, *ra = NULL;
+ struct CLIENT_REC *ca, *cr;
+ __le16 client;
+ struct RESTART_HDR *rh;
+ const struct LFS_RECORD_HDR *frh;
+ const struct LOG_REC_HDR *lrh;
+ bool is_mapped;
+ bool is_ro = sb_rdonly(sbi->sb);
+ u64 t64;
+ u16 t16;
+ u32 t32;
+
+ /* Get the size of page. NOTE: To replay we can use default page */
+#if PAGE_SIZE >= DefaultLogPageSize && PAGE_SIZE <= DefaultLogPageSize * 2
+ page_size = norm_file_page(PAGE_SIZE, &l_size, true);
+#else
+ page_size = norm_file_page(PAGE_SIZE, &l_size, false);
+#endif
+ if (!page_size)
+ return -EINVAL;
+
+ log = ntfs_zalloc(sizeof(struct ntfs_log));
+ if (!log)
+ return -ENOMEM;
+
+ log->ni = ni;
+ log->l_size = l_size;
+ log->one_page_buf = ntfs_malloc(page_size);
+
+ if (!log->one_page_buf) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ log->page_size = page_size;
+ log->page_mask = page_size - 1;
+ log->page_bits = blksize_bits(page_size);
+
+ /* Look for a restart area on the disk */
+ err = log_read_rst(log, l_size, true, &rst_info);
+ if (err)
+ goto out;
+
+ /* remember 'initialized' */
+ *initialized = rst_info.initialized;
+
+ if (!rst_info.restart) {
+ if (rst_info.initialized) {
+ /* no restart area but the file is not initialized */
+ err = -EINVAL;
+ goto out;
+ }
+
+ log_init_pg_hdr(log, page_size, page_size, 1, 1);
+ log_create(log, l_size, 0, get_random_int(), false, false);
+
+ log->ra = ra;
+
+ ra = log_create_ra(log);
+ if (!ra) {
+ err = -ENOMEM;
+ goto out;
+ }
+ log->ra = ra;
+ log->init_ra = true;
+
+ goto process_log;
+ }
+
+ /*
+ * If the restart offset above wasn't zero then we won't
+ * look for a second restart
+ */
+ if (rst_info.vbo)
+ goto check_restart_area;
+
+ err = log_read_rst(log, l_size, false, &rst_info2);
+
+ /* Determine which restart area to use */
+ if (!rst_info2.restart || rst_info2.last_lsn <= rst_info.last_lsn)
+ goto use_first_page;
+
+ use_second_page = true;
+
+ if (rst_info.chkdsk_was_run && page_size != rst_info.vbo) {
+ struct RECORD_PAGE_HDR *sp = NULL;
+ bool usa_error;
+
+ if (!read_log_page(log, page_size, &sp, &usa_error) &&
+ sp->rhdr.sign == NTFS_CHKD_SIGNATURE) {
+ use_second_page = false;
+ }
+ ntfs_free(sp);
+ }
+
+ if (use_second_page) {
+ ntfs_free(rst_info.r_page);
+ memcpy(&rst_info, &rst_info2, sizeof(struct restart_info));
+ rst_info2.r_page = NULL;
+ }
+
+use_first_page:
+ ntfs_free(rst_info2.r_page);
+
+check_restart_area:
+ /* If the restart area is at offset 0, we want to write the second restart area first */
+ log->init_ra = !!rst_info.vbo;
+
+ /* If we have a valid page then grab a pointer to the restart area */
+ ra2 = rst_info.valid_page
+ ? Add2Ptr(rst_info.r_page,
+ le16_to_cpu(rst_info.r_page->ra_off))
+ : NULL;
+
+ if (rst_info.chkdsk_was_run ||
+ (ra2 && ra2->client_idx[1] == LFS_NO_CLIENT_LE)) {
+ bool wrapped = false;
+ bool use_multi_page = false;
+ u32 open_log_count;
+
+ /* Do some checks based on whether we have a valid log page */
+ if (!rst_info.valid_page) {
+ open_log_count = get_random_int();
+ goto init_log_instance;
+ }
+ open_log_count = le32_to_cpu(ra2->open_log_count);
+
+ /*
+ * If the restart page size isn't changing then we want to
+ * check how much work we need to do
+ */
+ if (page_size != le32_to_cpu(rst_info.r_page->sys_page_size))
+ goto init_log_instance;
+
+init_log_instance:
+ log_init_pg_hdr(log, page_size, page_size, 1, 1);
+
+ log_create(log, l_size, rst_info.last_lsn, open_log_count,
+ wrapped, use_multi_page);
+
+ ra = log_create_ra(log);
+ if (!ra) {
+ err = -ENOMEM;
+ goto out;
+ }
+ log->ra = ra;
+
+ /* Put the restart areas and initialize the log file as required */
+ goto process_log;
+ }
+
+ if (!ra2) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ /*
+ * If the log page or the system page sizes have changed, we can't use the log file
+ * We must use the system page size instead of the default size
+ * if there is not a clean shutdown
+ */
+ t32 = le32_to_cpu(rst_info.r_page->sys_page_size);
+ if (page_size != t32) {
+ l_size = orig_file_size;
+ page_size =
+ norm_file_page(t32, &l_size, t32 == DefaultLogPageSize);
+ }
+
+ if (page_size != t32 ||
+ page_size != le32_to_cpu(rst_info.r_page->page_size)) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ /* If the file size has shrunk then we won't mount it */
+ if (l_size < le64_to_cpu(ra2->l_size)) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ log_init_pg_hdr(log, page_size, page_size,
+ le16_to_cpu(rst_info.r_page->major_ver),
+ le16_to_cpu(rst_info.r_page->minor_ver));
+
+ log->l_size = le64_to_cpu(ra2->l_size);
+ log->seq_num_bits = le32_to_cpu(ra2->seq_num_bits);
+ log->file_data_bits = sizeof(u64) * 8 - log->seq_num_bits;
+ log->seq_num_mask = (8 << log->file_data_bits) - 1;
+ log->last_lsn = le64_to_cpu(ra2->current_lsn);
+ log->seq_num = log->last_lsn >> log->file_data_bits;
+ log->ra_off = le16_to_cpu(rst_info.r_page->ra_off);
+ log->restart_size = log->sys_page_size - log->ra_off;
+ log->record_header_len = le16_to_cpu(ra2->rec_hdr_len);
+ log->ra_size = le16_to_cpu(ra2->ra_len);
+ log->data_off = le16_to_cpu(ra2->data_off);
+ log->data_size = log->page_size - log->data_off;
+ log->reserved = log->data_size - log->record_header_len;
+
+ vbo = lsn_to_vbo(log, log->last_lsn);
+
+ if (vbo < log->first_page) {
+ /* This is a pseudo lsn */
+ log->l_flags |= NTFSLOG_NO_LAST_LSN;
+ log->next_page = log->first_page;
+ goto find_oldest;
+ }
+
+ /* Find the end of this log record */
+ off = final_log_off(log, log->last_lsn,
+ le32_to_cpu(ra2->last_lsn_data_len));
+
+ /* If we wrapped the file then increment the sequence number */
+ if (off <= vbo) {
+ log->seq_num += 1;
+ log->l_flags |= NTFSLOG_WRAPPED;
+ }
+
+ /* Now compute the next log page to use */
+ vbo &= ~log->sys_page_mask;
+ tail = log->page_size - (off & log->page_mask) - 1;
+
+ /* If we can fit another log record on the page, move back a page the log file */
+ if (tail >= log->record_header_len) {
+ log->l_flags |= NTFSLOG_REUSE_TAIL;
+ log->next_page = vbo;
+ } else {
+ log->next_page = next_page_off(log, vbo);
+ }
+
+find_oldest:
+ /* Find the oldest client lsn. Use the last flushed lsn as a starting point */
+ log->oldest_lsn = log->last_lsn;
+ oldest_client_lsn(Add2Ptr(ra2, le16_to_cpu(ra2->client_off)),
+ ra2->client_idx[1], &log->oldest_lsn);
+ log->oldest_lsn_off = lsn_to_vbo(log, log->oldest_lsn);
+
+ if (log->oldest_lsn_off < log->first_page)
+ log->l_flags |= NTFSLOG_NO_OLDEST_LSN;
+
+ if (!(ra2->flags & RESTART_SINGLE_PAGE_IO))
+ log->l_flags |= NTFSLOG_WRAPPED | NTFSLOG_MULTIPLE_PAGE_IO;
+
+ log->current_openlog_count = le32_to_cpu(ra2->open_log_count);
+ log->total_avail_pages = log->l_size - log->first_page;
+ log->total_avail = log->total_avail_pages >> log->page_bits;
+ log->max_current_avail = log->total_avail * log->reserved;
+ log->total_avail = log->total_avail * log->data_size;
+
+ log->current_avail = current_log_avail(log);
+
+ ra = ntfs_zalloc(log->restart_size);
+ if (!ra) {
+ err = -ENOMEM;
+ goto out;
+ }
+ log->ra = ra;
+
+ t16 = le16_to_cpu(ra2->client_off);
+ if (t16 == offsetof(struct RESTART_AREA, clients)) {
+ memcpy(ra, ra2, log->ra_size);
+ } else {
+ memcpy(ra, ra2, offsetof(struct RESTART_AREA, clients));
+ memcpy(ra->clients, Add2Ptr(ra2, t16),
+ le16_to_cpu(ra2->ra_len) - t16);
+
+ log->current_openlog_count = get_random_int();
+ ra->open_log_count = cpu_to_le32(log->current_openlog_count);
+ log->ra_size = offsetof(struct RESTART_AREA, clients) +
+ sizeof(struct CLIENT_REC);
+ ra->client_off =
+ cpu_to_le16(offsetof(struct RESTART_AREA, clients));
+ ra->ra_len = cpu_to_le16(log->ra_size);
+ }
+
+ le32_add_cpu(&ra->open_log_count, 1);
+
+ /* Now we need to walk through looking for the last lsn */
+ err = last_log_lsn(log);
+ if (err)
+ goto out;
+
+ log->current_avail = current_log_avail(log);
+
+ /* Remember which restart area to write first */
+ log->init_ra = rst_info.vbo;
+
+process_log:
+ /* 1.0, 1.1, 2.0 log->major_ver/minor_ver - short values */
+ switch ((log->major_ver << 16) + log->minor_ver) {
+ case 0x10000:
+ case 0x10001:
+ case 0x20000:
+ break;
+ default:
+ ntfs_warn(sbi->sb, "\x24LogFile version %d.%d is not supported",
+ log->major_ver, log->minor_ver);
+ err = -EOPNOTSUPP;
+ log->set_dirty = true;
+ goto out;
+ }
+
+ /* One client "NTFS" per logfile */
+ ca = Add2Ptr(ra, le16_to_cpu(ra->client_off));
+
+ for (client = ra->client_idx[1];; client = cr->next_client) {
+ if (client == LFS_NO_CLIENT_LE) {
+ /* Insert "NTFS" client LogFile */
+ client = ra->client_idx[0];
+ if (client == LFS_NO_CLIENT_LE)
+ return -EINVAL;
+
+ t16 = le16_to_cpu(client);
+ cr = ca + t16;
+
+ remove_client(ca, cr, &ra->client_idx[0]);
+
+ cr->restart_lsn = 0;
+ cr->oldest_lsn = cpu_to_le64(log->oldest_lsn);
+ cr->name_bytes = cpu_to_le32(8);
+ cr->name[0] = cpu_to_le16('N');
+ cr->name[1] = cpu_to_le16('T');
+ cr->name[2] = cpu_to_le16('F');
+ cr->name[3] = cpu_to_le16('S');
+
+ add_client(ca, t16, &ra->client_idx[1]);
+ break;
+ }
+
+ cr = ca + le16_to_cpu(client);
+
+ if (cpu_to_le32(8) == cr->name_bytes &&
+ cpu_to_le16('N') == cr->name[0] &&
+ cpu_to_le16('T') == cr->name[1] &&
+ cpu_to_le16('F') == cr->name[2] &&
+ cpu_to_le16('S') == cr->name[3])
+ break;
+ }
+
+ /* Update the client handle with the client block information */
+ log->client_id.seq_num = cr->seq_num;
+ log->client_id.client_idx = client;
+
+ err = read_rst_area(log, &rst, &ra_lsn);
+ if (err)
+ goto out;
+
+ if (!rst)
+ goto out;
+
+ bytes_per_attr_entry = !rst->major_ver ? 0x2C : 0x28;
+
+ checkpt_lsn = le64_to_cpu(rst->check_point_start);
+ if (!checkpt_lsn)
+ checkpt_lsn = ra_lsn;
+
+ /* Allocate and Read the Transaction Table */
+ if (!rst->transact_table_len)
+ goto check_dirty_page_table;
+
+ t64 = le64_to_cpu(rst->transact_table_lsn);
+ err = read_log_rec_lcb(log, t64, lcb_ctx_prev, &lcb);
+ if (err)
+ goto out;
+
+ lrh = lcb->log_rec;
+ frh = lcb->lrh;
+ rec_len = le32_to_cpu(frh->client_data_len);
+
+ if (!check_log_rec(lrh, rec_len, le32_to_cpu(frh->transact_id),
+ bytes_per_attr_entry)) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ t16 = le16_to_cpu(lrh->redo_off);
+
+ rt = Add2Ptr(lrh, t16);
+ t32 = rec_len - t16;
+
+ /* Now check that this is a valid restart table */
+ if (!check_rstbl(rt, t32)) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ trtbl = ntfs_memdup(rt, t32);
+ if (!trtbl) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ lcb_put(lcb);
+ lcb = NULL;
+
+check_dirty_page_table:
+ /* The next record back should be the Dirty Pages Table */
+ if (!rst->dirty_pages_len)
+ goto check_attribute_names;
+
+ t64 = le64_to_cpu(rst->dirty_pages_table_lsn);
+ err = read_log_rec_lcb(log, t64, lcb_ctx_prev, &lcb);
+ if (err)
+ goto out;
+
+ lrh = lcb->log_rec;
+ frh = lcb->lrh;
+ rec_len = le32_to_cpu(frh->client_data_len);
+
+ if (!check_log_rec(lrh, rec_len, le32_to_cpu(frh->transact_id),
+ bytes_per_attr_entry)) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ t16 = le16_to_cpu(lrh->redo_off);
+
+ rt = Add2Ptr(lrh, t16);
+ t32 = rec_len - t16;
+
+ /* Now check that this is a valid restart table */
+ if (!check_rstbl(rt, t32)) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ dptbl = ntfs_memdup(rt, t32);
+ if (!dptbl) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ /* Convert Ra version '0' into version '1' */
+ if (rst->major_ver)
+ goto end_conv_1;
+
+ dp = NULL;
+ while ((dp = enum_rstbl(dptbl, dp))) {
+ struct DIR_PAGE_ENTRY_32 *dp0 = (struct DIR_PAGE_ENTRY_32 *)dp;
+ // NOTE: Danger. Check for of boundary
+ memmove(&dp->vcn, &dp0->vcn_low,
+ 2 * sizeof(u64) +
+ le32_to_cpu(dp->lcns_follow) * sizeof(u64));
+ }
+
+end_conv_1:
+ lcb_put(lcb);
+ lcb = NULL;
+
+ /* Go through the table and remove the duplicates, remembering the oldest lsn values */
+ if (sbi->cluster_size <= log->page_size)
+ goto trace_dp_table;
+
+ dp = NULL;
+ while ((dp = enum_rstbl(dptbl, dp))) {
+ struct DIR_PAGE_ENTRY *next = dp;
+
+ while ((next = enum_rstbl(dptbl, next))) {
+ if (next->target_attr == dp->target_attr &&
+ next->vcn == dp->vcn) {
+ if (le64_to_cpu(next->oldest_lsn) <
+ le64_to_cpu(dp->oldest_lsn)) {
+ dp->oldest_lsn = next->oldest_lsn;
+ }
+
+ free_rsttbl_idx(dptbl, PtrOffset(dptbl, next));
+ }
+ }
+ }
+trace_dp_table:
+check_attribute_names:
+ /* The next record should be the Attribute Names */
+ if (!rst->attr_names_len)
+ goto check_attr_table;
+
+ t64 = le64_to_cpu(rst->attr_names_lsn);
+ err = read_log_rec_lcb(log, t64, lcb_ctx_prev, &lcb);
+ if (err)
+ goto out;
+
+ lrh = lcb->log_rec;
+ frh = lcb->lrh;
+ rec_len = le32_to_cpu(frh->client_data_len);
+
+ if (!check_log_rec(lrh, rec_len, le32_to_cpu(frh->transact_id),
+ bytes_per_attr_entry)) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ t32 = lrh_length(lrh);
+ rec_len -= t32;
+
+ attr_names = ntfs_memdup(Add2Ptr(lrh, t32), rec_len);
+
+ lcb_put(lcb);
+ lcb = NULL;
+
+check_attr_table:
+ /* The next record should be the attribute Table */
+ if (!rst->open_attr_len)
+ goto check_attribute_names2;
+
+ t64 = le64_to_cpu(rst->open_attr_table_lsn);
+ err = read_log_rec_lcb(log, t64, lcb_ctx_prev, &lcb);
+ if (err)
+ goto out;
+
+ lrh = lcb->log_rec;
+ frh = lcb->lrh;
+ rec_len = le32_to_cpu(frh->client_data_len);
+
+ if (!check_log_rec(lrh, rec_len, le32_to_cpu(frh->transact_id),
+ bytes_per_attr_entry)) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ t16 = le16_to_cpu(lrh->redo_off);
+
+ rt = Add2Ptr(lrh, t16);
+ t32 = rec_len - t16;
+
+ if (!check_rstbl(rt, t32)) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ oatbl = ntfs_memdup(rt, t32);
+ if (!oatbl) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ log->open_attr_tbl = oatbl;
+
+ /* Clear all of the Attr pointers */
+ oe = NULL;
+ while ((oe = enum_rstbl(oatbl, oe))) {
+ if (!rst->major_ver) {
+ struct OPEN_ATTR_ENRTY_32 oe0;
+
+ /* Really 'oe' points to OPEN_ATTR_ENRTY_32 */
+ memcpy(&oe0, oe, SIZEOF_OPENATTRIBUTEENTRY0);
+
+ oe->bytes_per_index = oe0.bytes_per_index;
+ oe->type = oe0.type;
+ oe->is_dirty_pages = oe0.is_dirty_pages;
+ oe->name_len = 0;
+ oe->ref = oe0.ref;
+ oe->open_record_lsn = oe0.open_record_lsn;
+ }
+
+ oe->is_attr_name = 0;
+ oe->ptr = NULL;
+ }
+
+ lcb_put(lcb);
+ lcb = NULL;
+
+check_attribute_names2:
+ if (!rst->attr_names_len)
+ goto trace_attribute_table;
+
+ ane = attr_names;
+ if (!oatbl)
+ goto trace_attribute_table;
+ while (ane->off) {
+ /* TODO: Clear table on exit! */
+ oe = Add2Ptr(oatbl, le16_to_cpu(ane->off));
+ t16 = le16_to_cpu(ane->name_bytes);
+ oe->name_len = t16 / sizeof(short);
+ oe->ptr = ane->name;
+ oe->is_attr_name = 2;
+ ane = Add2Ptr(ane, sizeof(struct ATTR_NAME_ENTRY) + t16);
+ }
+
+trace_attribute_table:
+ /*
+ * If the checkpt_lsn is zero, then this is a freshly
+ * formatted disk and we have no work to do
+ */
+ if (!checkpt_lsn) {
+ err = 0;
+ goto out;
+ }
+
+ if (!oatbl) {
+ oatbl = init_rsttbl(bytes_per_attr_entry, 8);
+ if (!oatbl) {
+ err = -ENOMEM;
+ goto out;
+ }
+ }
+
+ log->open_attr_tbl = oatbl;
+
+ /* Start the analysis pass from the Checkpoint lsn. */
+ rec_lsn = checkpt_lsn;
+
+ /* Read the first lsn */
+ err = read_log_rec_lcb(log, checkpt_lsn, lcb_ctx_next, &lcb);
+ if (err)
+ goto out;
+
+ /* Loop to read all subsequent records to the end of the log file */
+next_log_record_analyze:
+ err = read_next_log_rec(log, lcb, &rec_lsn);
+ if (err)
+ goto out;
+
+ if (!rec_lsn)
+ goto end_log_records_enumerate;
+
+ frh = lcb->lrh;
+ transact_id = le32_to_cpu(frh->transact_id);
+ rec_len = le32_to_cpu(frh->client_data_len);
+ lrh = lcb->log_rec;
+
+ if (!check_log_rec(lrh, rec_len, transact_id, bytes_per_attr_entry)) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ /*
+ * The first lsn after the previous lsn remembered
+ * the checkpoint is the first candidate for the rlsn
+ */
+ if (!rlsn)
+ rlsn = rec_lsn;
+
+ if (LfsClientRecord != frh->record_type)
+ goto next_log_record_analyze;
+
+ /*
+ * Now update the Transaction Table for this transaction
+ * If there is no entry present or it is unallocated we allocate the entry
+ */
+ if (!trtbl) {
+ trtbl = init_rsttbl(sizeof(struct TRANSACTION_ENTRY),
+ INITIAL_NUMBER_TRANSACTIONS);
+ if (!trtbl) {
+ err = -ENOMEM;
+ goto out;
+ }
+ }
+
+ tr = Add2Ptr(trtbl, transact_id);
+
+ if (transact_id >= bytes_per_rt(trtbl) ||
+ tr->next != RESTART_ENTRY_ALLOCATED_LE) {
+ tr = alloc_rsttbl_from_idx(&trtbl, transact_id);
+ if (!tr) {
+ err = -ENOMEM;
+ goto out;
+ }
+ tr->transact_state = TransactionActive;
+ tr->first_lsn = cpu_to_le64(rec_lsn);
+ }
+
+ tr->prev_lsn = tr->undo_next_lsn = cpu_to_le64(rec_lsn);
+
+ /*
+ * If this is a compensation log record, then change
+ * the undo_next_lsn to be the undo_next_lsn of this record
+ */
+ if (lrh->undo_op == cpu_to_le16(CompensationLogRecord))
+ tr->undo_next_lsn = frh->client_undo_next_lsn;
+
+ /* Dispatch to handle log record depending on type */
+ switch (le16_to_cpu(lrh->redo_op)) {
+ case InitializeFileRecordSegment:
+ case DeallocateFileRecordSegment:
+ case WriteEndOfFileRecordSegment:
+ case CreateAttribute:
+ case DeleteAttribute:
+ case UpdateResidentValue:
+ case UpdateNonresidentValue:
+ case UpdateMappingPairs:
+ case SetNewAttributeSizes:
+ case AddIndexEntryRoot:
+ case DeleteIndexEntryRoot:
+ case AddIndexEntryAllocation:
+ case DeleteIndexEntryAllocation:
+ case WriteEndOfIndexBuffer:
+ case SetIndexEntryVcnRoot:
+ case SetIndexEntryVcnAllocation:
+ case UpdateFileNameRoot:
+ case UpdateFileNameAllocation:
+ case SetBitsInNonresidentBitMap:
+ case ClearBitsInNonresidentBitMap:
+ case UpdateRecordDataRoot:
+ case UpdateRecordDataAllocation:
+ case ZeroEndOfFileRecord:
+ t16 = le16_to_cpu(lrh->target_attr);
+ t64 = le64_to_cpu(lrh->target_vcn);
+ dp = find_dp(dptbl, t16, t64);
+
+ if (dp)
+ goto copy_lcns;
+
+ /*
+ * Calculate the number of clusters per page the system
+ * which wrote the checkpoint, possibly creating the table
+ */
+ if (dptbl) {
+ t32 = (le16_to_cpu(dptbl->size) -
+ sizeof(struct DIR_PAGE_ENTRY)) /
+ sizeof(u64);
+ } else {
+ t32 = log->clst_per_page;
+ ntfs_free(dptbl);
+ dptbl = init_rsttbl(struct_size(dp, page_lcns, t32),
+ 32);
+ if (!dptbl) {
+ err = -ENOMEM;
+ goto out;
+ }
+ }
+
+ dp = alloc_rsttbl_idx(&dptbl);
+ dp->target_attr = cpu_to_le32(t16);
+ dp->transfer_len = cpu_to_le32(t32 << sbi->cluster_bits);
+ dp->lcns_follow = cpu_to_le32(t32);
+ dp->vcn = cpu_to_le64(t64 & ~((u64)t32 - 1));
+ dp->oldest_lsn = cpu_to_le64(rec_lsn);
+
+copy_lcns:
+ /*
+ * Copy the Lcns from the log record into the Dirty Page Entry
+ * TODO: for different page size support, must somehow make
+ * whole routine a loop, case Lcns do not fit below
+ */
+ t16 = le16_to_cpu(lrh->lcns_follow);
+ for (i = 0; i < t16; i++) {
+ size_t j = (size_t)(le64_to_cpu(lrh->target_vcn) -
+ le64_to_cpu(dp->vcn));
+ dp->page_lcns[j + i] = lrh->page_lcns[i];
+ }
+
+ goto next_log_record_analyze;
+
+ case DeleteDirtyClusters: {
+ u32 range_count =
+ le16_to_cpu(lrh->redo_len) / sizeof(struct LCN_RANGE);
+ const struct LCN_RANGE *r =
+ Add2Ptr(lrh, le16_to_cpu(lrh->redo_off));
+
+ /* Loop through all of the Lcn ranges this log record */
+ for (i = 0; i < range_count; i++, r++) {
+ u64 lcn0 = le64_to_cpu(r->lcn);
+ u64 lcn_e = lcn0 + le64_to_cpu(r->len) - 1;
+
+ dp = NULL;
+ while ((dp = enum_rstbl(dptbl, dp))) {
+ u32 j;
+
+ t32 = le32_to_cpu(dp->lcns_follow);
+ for (j = 0; j < t32; j++) {
+ t64 = le64_to_cpu(dp->page_lcns[j]);
+ if (t64 >= lcn0 && t64 <= lcn_e)
+ dp->page_lcns[j] = 0;
+ }
+ }
+ }
+ goto next_log_record_analyze;
+ ;
+ }
+
+ case OpenNonresidentAttribute:
+ t16 = le16_to_cpu(lrh->target_attr);
+ if (t16 >= bytes_per_rt(oatbl)) {
+ /*
+ * Compute how big the table needs to be.
+ * Add 10 extra entries for some cushion
+ */
+ u32 new_e = t16 / le16_to_cpu(oatbl->size);
+
+ new_e += 10 - le16_to_cpu(oatbl->used);
+
+ oatbl = extend_rsttbl(oatbl, new_e, ~0u);
+ log->open_attr_tbl = oatbl;
+ if (!oatbl) {
+ err = -ENOMEM;
+ goto out;
+ }
+ }
+
+ /* Point to the entry being opened */
+ oe = alloc_rsttbl_from_idx(&oatbl, t16);
+ log->open_attr_tbl = oatbl;
+ if (!oe) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ /* Initialize this entry from the log record */
+ t16 = le16_to_cpu(lrh->redo_off);
+ if (!rst->major_ver) {
+ /* Convert version '0' into version '1' */
+ struct OPEN_ATTR_ENRTY_32 *oe0 = Add2Ptr(lrh, t16);
+
+ oe->bytes_per_index = oe0->bytes_per_index;
+ oe->type = oe0->type;
+ oe->is_dirty_pages = oe0->is_dirty_pages;
+ oe->name_len = 0; //oe0.name_len;
+ oe->ref = oe0->ref;
+ oe->open_record_lsn = oe0->open_record_lsn;
+ } else {
+ memcpy(oe, Add2Ptr(lrh, t16), bytes_per_attr_entry);
+ }
+
+ t16 = le16_to_cpu(lrh->undo_len);
+ if (t16) {
+ oe->ptr = ntfs_malloc(t16);
+ if (!oe->ptr) {
+ err = -ENOMEM;
+ goto out;
+ }
+ oe->name_len = t16 / sizeof(short);
+ memcpy(oe->ptr,
+ Add2Ptr(lrh, le16_to_cpu(lrh->undo_off)), t16);
+ oe->is_attr_name = 1;
+ } else {
+ oe->ptr = NULL;
+ oe->is_attr_name = 0;
+ }
+
+ goto next_log_record_analyze;
+
+ case HotFix:
+ t16 = le16_to_cpu(lrh->target_attr);
+ t64 = le64_to_cpu(lrh->target_vcn);
+ dp = find_dp(dptbl, t16, t64);
+ if (dp) {
+ size_t j = le64_to_cpu(lrh->target_vcn) -
+ le64_to_cpu(dp->vcn);
+ if (dp->page_lcns[j])
+ dp->page_lcns[j] = lrh->page_lcns[0];
+ }
+ goto next_log_record_analyze;
+
+ case EndTopLevelAction:
+ tr = Add2Ptr(trtbl, transact_id);
+ tr->prev_lsn = cpu_to_le64(rec_lsn);
+ tr->undo_next_lsn = frh->client_undo_next_lsn;
+ goto next_log_record_analyze;
+
+ case PrepareTransaction:
+ tr = Add2Ptr(trtbl, transact_id);
+ tr->transact_state = TransactionPrepared;
+ goto next_log_record_analyze;
+
+ case CommitTransaction:
+ tr = Add2Ptr(trtbl, transact_id);
+ tr->transact_state = TransactionCommitted;
+ goto next_log_record_analyze;
+
+ case ForgetTransaction:
+ free_rsttbl_idx(trtbl, transact_id);
+ goto next_log_record_analyze;
+
+ case Noop:
+ case OpenAttributeTableDump:
+ case AttributeNamesDump:
+ case DirtyPageTableDump:
+ case TransactionTableDump:
+ /* The following cases require no action the Analysis Pass */
+ goto next_log_record_analyze;
+
+ default:
+ /*
+ * All codes will be explicitly handled.
+ * If we see a code we do not expect, then we are trouble
+ */
+ goto next_log_record_analyze;
+ }
+
+end_log_records_enumerate:
+ lcb_put(lcb);
+ lcb = NULL;
+
+ /*
+ * Scan the Dirty Page Table and Transaction Table for
+ * the lowest lsn, and return it as the Redo lsn
+ */
+ dp = NULL;
+ while ((dp = enum_rstbl(dptbl, dp))) {
+ t64 = le64_to_cpu(dp->oldest_lsn);
+ if (t64 && t64 < rlsn)
+ rlsn = t64;
+ }
+
+ tr = NULL;
+ while ((tr = enum_rstbl(trtbl, tr))) {
+ t64 = le64_to_cpu(tr->first_lsn);
+ if (t64 && t64 < rlsn)
+ rlsn = t64;
+ }
+
+ /* Only proceed if the Dirty Page Table or Transaction table are not empty */
+ if ((!dptbl || !dptbl->total) && (!trtbl || !trtbl->total))
+ goto end_reply;
+
+ sbi->flags |= NTFS_FLAGS_NEED_REPLAY;
+ if (is_ro)
+ goto out;
+
+ /* Reopen all of the attributes with dirty pages */
+ oe = NULL;
+next_open_attribute:
+
+ oe = enum_rstbl(oatbl, oe);
+ if (!oe) {
+ err = 0;
+ dp = NULL;
+ goto next_dirty_page;
+ }
+
+ oa = ntfs_zalloc(sizeof(struct OpenAttr));
+ if (!oa) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ inode = ntfs_iget5(sbi->sb, &oe->ref, NULL);
+ if (IS_ERR(inode))
+ goto fake_attr;
+
+ if (is_bad_inode(inode)) {
+ iput(inode);
+fake_attr:
+ if (oa->ni) {
+ iput(&oa->ni->vfs_inode);
+ oa->ni = NULL;
+ }
+
+ attr = attr_create_nonres_log(sbi, oe->type, 0, oe->ptr,
+ oe->name_len, 0);
+ if (!attr) {
+ ntfs_free(oa);
+ err = -ENOMEM;
+ goto out;
+ }
+ oa->attr = attr;
+ oa->run1 = &oa->run0;
+ goto final_oe;
+ }
+
+ ni_oe = ntfs_i(inode);
+ oa->ni = ni_oe;
+
+ attr = ni_find_attr(ni_oe, NULL, NULL, oe->type, oe->ptr, oe->name_len,
+ NULL, NULL);
+
+ if (!attr)
+ goto fake_attr;
+
+ t32 = le32_to_cpu(attr->size);
+ oa->attr = ntfs_memdup(attr, t32);
+ if (!oa->attr)
+ goto fake_attr;
+
+ if (!S_ISDIR(inode->i_mode)) {
+ if (attr->type == ATTR_DATA && !attr->name_len) {
+ oa->run1 = &ni_oe->file.run;
+ goto final_oe;
+ }
+ } else {
+ if (attr->type == ATTR_ALLOC &&
+ attr->name_len == ARRAY_SIZE(I30_NAME) &&
+ !memcmp(attr_name(attr), I30_NAME, sizeof(I30_NAME))) {
+ oa->run1 = &ni_oe->dir.alloc_run;
+ goto final_oe;
+ }
+ }
+
+ if (attr->non_res) {
+ u16 roff = le16_to_cpu(attr->nres.run_off);
+ CLST svcn = le64_to_cpu(attr->nres.svcn);
+
+ err = run_unpack(&oa->run0, sbi, inode->i_ino, svcn,
+ le64_to_cpu(attr->nres.evcn), svcn,
+ Add2Ptr(attr, roff), t32 - roff);
+ if (err < 0) {
+ ntfs_free(oa->attr);
+ oa->attr = NULL;
+ goto fake_attr;
+ }
+ err = 0;
+ }
+ oa->run1 = &oa->run0;
+ attr = oa->attr;
+
+final_oe:
+ if (oe->is_attr_name == 1)
+ ntfs_free(oe->ptr);
+ oe->is_attr_name = 0;
+ oe->ptr = oa;
+ oe->name_len = attr->name_len;
+
+ goto next_open_attribute;
+
+ /*
+ * Now loop through the dirty page table to extract all of the Vcn/Lcn
+ * Mapping that we have, and insert it into the appropriate run
+ */
+next_dirty_page:
+ dp = enum_rstbl(dptbl, dp);
+ if (!dp)
+ goto do_redo_1;
+
+ oe = Add2Ptr(oatbl, le32_to_cpu(dp->target_attr));
+
+ if (oe->next != RESTART_ENTRY_ALLOCATED_LE)
+ goto next_dirty_page;
+
+ oa = oe->ptr;
+ if (!oa)
+ goto next_dirty_page;
+
+ i = -1;
+next_dirty_page_vcn:
+ i += 1;
+ if (i >= le32_to_cpu(dp->lcns_follow))
+ goto next_dirty_page;
+
+ vcn = le64_to_cpu(dp->vcn) + i;
+ size = (vcn + 1) << sbi->cluster_bits;
+
+ if (!dp->page_lcns[i])
+ goto next_dirty_page_vcn;
+
+ rno = ino_get(&oe->ref);
+ if (rno <= MFT_REC_MIRR &&
+ size < (MFT_REC_VOL + 1) * sbi->record_size &&
+ oe->type == ATTR_DATA) {
+ goto next_dirty_page_vcn;
+ }
+
+ lcn = le64_to_cpu(dp->page_lcns[i]);
+
+ if ((!run_lookup_entry(oa->run1, vcn, &lcn0, &len0, NULL) ||
+ lcn0 != lcn) &&
+ !run_add_entry(oa->run1, vcn, lcn, 1, false)) {
+ err = -ENOMEM;
+ goto out;
+ }
+ attr = oa->attr;
+ t64 = le64_to_cpu(attr->nres.alloc_size);
+ if (size > t64) {
+ attr->nres.valid_size = attr->nres.data_size =
+ attr->nres.alloc_size = cpu_to_le64(size);
+ }
+ goto next_dirty_page_vcn;
+
+do_redo_1:
+ /*
+ * Perform the Redo Pass, to restore all of the dirty pages to the same
+ * contents that they had immediately before the crash
+ * If the dirty page table is empty, then we can skip the entire Redo Pass
+ */
+ if (!dptbl || !dptbl->total)
+ goto do_undo_action;
+
+ rec_lsn = rlsn;
+
+ /*
+ * Read the record at the Redo lsn, before falling
+ * into common code to handle each record
+ */
+ err = read_log_rec_lcb(log, rlsn, lcb_ctx_next, &lcb);
+ if (err)
+ goto out;
+
+ /*
+ * Now loop to read all of our log records forwards,
+ * until we hit the end of the file, cleaning up at the end
+ */
+do_action_next:
+ frh = lcb->lrh;
+
+ if (LfsClientRecord != frh->record_type)
+ goto read_next_log_do_action;
+
+ transact_id = le32_to_cpu(frh->transact_id);
+ rec_len = le32_to_cpu(frh->client_data_len);
+ lrh = lcb->log_rec;
+
+ if (!check_log_rec(lrh, rec_len, transact_id, bytes_per_attr_entry)) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ /* Ignore log records that do not update pages */
+ if (lrh->lcns_follow)
+ goto find_dirty_page;
+
+ goto read_next_log_do_action;
+
+find_dirty_page:
+ t16 = le16_to_cpu(lrh->target_attr);
+ t64 = le64_to_cpu(lrh->target_vcn);
+ dp = find_dp(dptbl, t16, t64);
+
+ if (!dp)
+ goto read_next_log_do_action;
+
+ if (rec_lsn < le64_to_cpu(dp->oldest_lsn))
+ goto read_next_log_do_action;
+
+ t16 = le16_to_cpu(lrh->target_attr);
+ if (t16 >= bytes_per_rt(oatbl)) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ oe = Add2Ptr(oatbl, t16);
+
+ if (oe->next != RESTART_ENTRY_ALLOCATED_LE) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ oa = oe->ptr;
+
+ if (!oa) {
+ err = -EINVAL;
+ goto out;
+ }
+ attr = oa->attr;
+
+ vcn = le64_to_cpu(lrh->target_vcn);
+
+ if (!run_lookup_entry(oa->run1, vcn, &lcn, NULL, NULL) ||
+ lcn == SPARSE_LCN) {
+ goto read_next_log_do_action;
+ }
+
+ /* Point to the Redo data and get its length */
+ data = Add2Ptr(lrh, le16_to_cpu(lrh->redo_off));
+ dlen = le16_to_cpu(lrh->redo_len);
+
+ /* Shorten length by any Lcns which were deleted */
+ saved_len = dlen;
+
+ for (i = le16_to_cpu(lrh->lcns_follow); i; i--) {
+ size_t j;
+ u32 alen, voff;
+
+ voff = le16_to_cpu(lrh->record_off) +
+ le16_to_cpu(lrh->attr_off);
+ voff += le16_to_cpu(lrh->cluster_off) << SECTOR_SHIFT;
+
+ /* If the Vcn question is allocated, we can just get out.*/
+ j = le64_to_cpu(lrh->target_vcn) - le64_to_cpu(dp->vcn);
+ if (dp->page_lcns[j + i - 1])
+ break;
+
+ if (!saved_len)
+ saved_len = 1;
+
+ /*
+ * Calculate the allocated space left relative to the
+ * log record Vcn, after removing this unallocated Vcn
+ */
+ alen = (i - 1) << sbi->cluster_bits;
+
+ /*
+ * If the update described this log record goes beyond
+ * the allocated space, then we will have to reduce the length
+ */
+ if (voff >= alen)
+ dlen = 0;
+ else if (voff + dlen > alen)
+ dlen = alen - voff;
+ }
+
+ /* If the resulting dlen from above is now zero, we can skip this log record */
+ if (!dlen && saved_len)
+ goto read_next_log_do_action;
+
+ t16 = le16_to_cpu(lrh->redo_op);
+ if (can_skip_action(t16))
+ goto read_next_log_do_action;
+
+ /* Apply the Redo operation a common routine */
+ err = do_action(log, oe, lrh, t16, data, dlen, rec_len, &rec_lsn);
+ if (err)
+ goto out;
+
+ /* Keep reading and looping back until end of file */
+read_next_log_do_action:
+ err = read_next_log_rec(log, lcb, &rec_lsn);
+ if (!err && rec_lsn)
+ goto do_action_next;
+
+ lcb_put(lcb);
+ lcb = NULL;
+
+do_undo_action:
+ /* Scan Transaction Table */
+ tr = NULL;
+transaction_table_next:
+ tr = enum_rstbl(trtbl, tr);
+ if (!tr)
+ goto undo_action_done;
+
+ if (TransactionActive != tr->transact_state || !tr->undo_next_lsn) {
+ free_rsttbl_idx(trtbl, PtrOffset(trtbl, tr));
+ goto transaction_table_next;
+ }
+
+ log->transaction_id = PtrOffset(trtbl, tr);
+ undo_next_lsn = le64_to_cpu(tr->undo_next_lsn);
+
+ /*
+ * We only have to do anything if the transaction has
+ * something its undo_next_lsn field
+ */
+ if (!undo_next_lsn)
+ goto commit_undo;
+
+ /* Read the first record to be undone by this transaction */
+ err = read_log_rec_lcb(log, undo_next_lsn, lcb_ctx_undo_next, &lcb);
+ if (err)
+ goto out;
+
+ /*
+ * Now loop to read all of our log records forwards,
+ * until we hit the end of the file, cleaning up at the end
+ */
+undo_action_next:
+
+ lrh = lcb->log_rec;
+ frh = lcb->lrh;
+ transact_id = le32_to_cpu(frh->transact_id);
+ rec_len = le32_to_cpu(frh->client_data_len);
+
+ if (!check_log_rec(lrh, rec_len, transact_id, bytes_per_attr_entry)) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ if (lrh->undo_op == cpu_to_le16(Noop))
+ goto read_next_log_undo_action;
+
+ oe = Add2Ptr(oatbl, le16_to_cpu(lrh->target_attr));
+ oa = oe->ptr;
+
+ t16 = le16_to_cpu(lrh->lcns_follow);
+ if (!t16)
+ goto add_allocated_vcns;
+
+ is_mapped = run_lookup_entry(oa->run1, le64_to_cpu(lrh->target_vcn),
+ &lcn, &clen, NULL);
+
+ /*
+ * If the mapping isn't already the table or the mapping
+ * corresponds to a hole the mapping, we need to make sure
+ * there is no partial page already memory
+ */
+ if (is_mapped && lcn != SPARSE_LCN && clen >= t16)
+ goto add_allocated_vcns;
+
+ vcn = le64_to_cpu(lrh->target_vcn);
+ vcn &= ~(log->clst_per_page - 1);
+
+add_allocated_vcns:
+ for (i = 0, vcn = le64_to_cpu(lrh->target_vcn),
+ size = (vcn + 1) << sbi->cluster_bits;
+ i < t16; i++, vcn += 1, size += sbi->cluster_size) {
+ attr = oa->attr;
+ if (!attr->non_res) {
+ if (size > le32_to_cpu(attr->res.data_size))
+ attr->res.data_size = cpu_to_le32(size);
+ } else {
+ if (size > le64_to_cpu(attr->nres.data_size))
+ attr->nres.valid_size = attr->nres.data_size =
+ attr->nres.alloc_size =
+ cpu_to_le64(size);
+ }
+ }
+
+ t16 = le16_to_cpu(lrh->undo_op);
+ if (can_skip_action(t16))
+ goto read_next_log_undo_action;
+
+ /* Point to the Redo data and get its length */
+ data = Add2Ptr(lrh, le16_to_cpu(lrh->undo_off));
+ dlen = le16_to_cpu(lrh->undo_len);
+
+ /* it is time to apply the undo action */
+ err = do_action(log, oe, lrh, t16, data, dlen, rec_len, NULL);
+
+read_next_log_undo_action:
+ /*
+ * Keep reading and looping back until we have read the
+ * last record for this transaction
+ */
+ err = read_next_log_rec(log, lcb, &rec_lsn);
+ if (err)
+ goto out;
+
+ if (rec_lsn)
+ goto undo_action_next;
+
+ lcb_put(lcb);
+ lcb = NULL;
+
+commit_undo:
+ free_rsttbl_idx(trtbl, log->transaction_id);
+
+ log->transaction_id = 0;
+
+ goto transaction_table_next;
+
+undo_action_done:
+
+ ntfs_update_mftmirr(sbi, 0);
+
+ sbi->flags &= ~NTFS_FLAGS_NEED_REPLAY;
+
+end_reply:
+
+ err = 0;
+ if (is_ro)
+ goto out;
+
+ rh = ntfs_zalloc(log->page_size);
+ if (!rh) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ rh->rhdr.sign = NTFS_RSTR_SIGNATURE;
+ rh->rhdr.fix_off = cpu_to_le16(offsetof(struct RESTART_HDR, fixups));
+ t16 = (log->page_size >> SECTOR_SHIFT) + 1;
+ rh->rhdr.fix_num = cpu_to_le16(t16);
+ rh->sys_page_size = cpu_to_le32(log->page_size);
+ rh->page_size = cpu_to_le32(log->page_size);
+
+ t16 = QuadAlign(offsetof(struct RESTART_HDR, fixups) +
+ sizeof(short) * t16);
+ rh->ra_off = cpu_to_le16(t16);
+ rh->minor_ver = cpu_to_le16(1); // 0x1A:
+ rh->major_ver = cpu_to_le16(1); // 0x1C:
+
+ ra2 = Add2Ptr(rh, t16);
+ memcpy(ra2, ra, sizeof(struct RESTART_AREA));
+
+ ra2->client_idx[0] = 0;
+ ra2->client_idx[1] = LFS_NO_CLIENT_LE;
+ ra2->flags = cpu_to_le16(2);
+
+ le32_add_cpu(&ra2->open_log_count, 1);
+
+ ntfs_fix_pre_write(&rh->rhdr, log->page_size);
+
+ err = ntfs_sb_write_run(sbi, &ni->file.run, 0, rh, log->page_size);
+ if (!err)
+ err = ntfs_sb_write_run(sbi, &log->ni->file.run, log->page_size,
+ rh, log->page_size);
+
+ ntfs_free(rh);
+ if (err)
+ goto out;
+
+out:
+ ntfs_free(rst);
+ if (lcb)
+ lcb_put(lcb);
+
+ /* Scan the Open Attribute Table to close all of the open attributes */
+ oe = NULL;
+ while ((oe = enum_rstbl(oatbl, oe))) {
+ rno = ino_get(&oe->ref);
+
+ if (oe->is_attr_name == 1) {
+ ntfs_free(oe->ptr);
+ oe->ptr = NULL;
+ continue;
+ }
+
+ if (oe->is_attr_name)
+ continue;
+
+ oa = oe->ptr;
+ if (!oa)
+ continue;
+
+ run_close(&oa->run0);
+ ntfs_free(oa->attr);
+ if (oa->ni)
+ iput(&oa->ni->vfs_inode);
+ ntfs_free(oa);
+ }
+
+ ntfs_free(trtbl);
+ ntfs_free(oatbl);
+ ntfs_free(dptbl);
+ ntfs_free(attr_names);
+ ntfs_free(rst_info.r_page);
+
+ ntfs_free(ra);
+ ntfs_free(log->one_page_buf);
+
+ if (err)
+ sbi->flags |= NTFS_FLAGS_NEED_REPLAY;
+
+ if (err == -EROFS)
+ err = 0;
+ else if (log->set_dirty)
+ ntfs_set_state(sbi, NTFS_DIRTY_ERROR);
+
+ ntfs_free(log);
+
+ return err;
+}
--
2.30.0
1
0
From: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
mainline inclusion
from mainline-v5.15-rc1
commit 522e010b58379fbe19b38fdef5016bca0c3cf405
category: feature
bugzilla:
https://gitee.com/openeuler/kernel/issues/I4G67J?from=project-issue
CVE: NA
----------------------------------------------------------------------
This patch adds different types of NTFS-applicable compressions:
- lznt
- lzx
- xpress
Latter two (lzx, xpress) implement Windows Compact OS feature and
were taken from ntfs-3g system comression plugin authored by Eric Biggers
(https://github.com/ebiggers/ntfs-3g-system-compression)
which were ported to ntfs3 and adapted to Linux Kernel environment.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
Signed-off-by: Yin Xiujiang <yinxiujiang(a)kylinos.cn>
---
fs/ntfs3/lib/decompress_common.c | 332 +++++++++++++++
fs/ntfs3/lib/decompress_common.h | 352 ++++++++++++++++
fs/ntfs3/lib/lib.h | 26 ++
fs/ntfs3/lib/lzx_decompress.c | 683 +++++++++++++++++++++++++++++++
fs/ntfs3/lib/xpress_decompress.c | 155 +++++++
fs/ntfs3/lznt.c | 452 ++++++++++++++++++++
6 files changed, 2000 insertions(+)
create mode 100644 fs/ntfs3/lib/decompress_common.c
create mode 100644 fs/ntfs3/lib/decompress_common.h
create mode 100644 fs/ntfs3/lib/lib.h
create mode 100644 fs/ntfs3/lib/lzx_decompress.c
create mode 100644 fs/ntfs3/lib/xpress_decompress.c
create mode 100644 fs/ntfs3/lznt.c
diff --git a/fs/ntfs3/lib/decompress_common.c b/fs/ntfs3/lib/decompress_common.c
new file mode 100644
index 000000000000..83c9e93aea77
--- /dev/null
+++ b/fs/ntfs3/lib/decompress_common.c
@@ -0,0 +1,332 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * decompress_common.c - Code shared by the XPRESS and LZX decompressors
+ *
+ * Copyright (C) 2015 Eric Biggers
+ *
+ * This program is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free Software
+ * Foundation, either version 2 of the License, or (at your option) any later
+ * version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "decompress_common.h"
+
+/*
+ * make_huffman_decode_table() -
+ *
+ * Build a decoding table for a canonical prefix code, or "Huffman code".
+ *
+ * This is an internal function, not part of the library API!
+ *
+ * This takes as input the length of the codeword for each symbol in the
+ * alphabet and produces as output a table that can be used for fast
+ * decoding of prefix-encoded symbols using read_huffsym().
+ *
+ * Strictly speaking, a canonical prefix code might not be a Huffman
+ * code. But this algorithm will work either way; and in fact, since
+ * Huffman codes are defined in terms of symbol frequencies, there is no
+ * way for the decompressor to know whether the code is a true Huffman
+ * code or not until all symbols have been decoded.
+ *
+ * Because the prefix code is assumed to be "canonical", it can be
+ * reconstructed directly from the codeword lengths. A prefix code is
+ * canonical if and only if a longer codeword never lexicographically
+ * precedes a shorter codeword, and the lexicographic ordering of
+ * codewords of the same length is the same as the lexicographic ordering
+ * of the corresponding symbols. Consequently, we can sort the symbols
+ * primarily by codeword length and secondarily by symbol value, then
+ * reconstruct the prefix code by generating codewords lexicographically
+ * in that order.
+ *
+ * This function does not, however, generate the prefix code explicitly.
+ * Instead, it directly builds a table for decoding symbols using the
+ * code. The basic idea is this: given the next 'max_codeword_len' bits
+ * in the input, we can look up the decoded symbol by indexing a table
+ * containing 2**max_codeword_len entries. A codeword with length
+ * 'max_codeword_len' will have exactly one entry in this table, whereas
+ * a codeword shorter than 'max_codeword_len' will have multiple entries
+ * in this table. Precisely, a codeword of length n will be represented
+ * by 2**(max_codeword_len - n) entries in this table. The 0-based index
+ * of each such entry will contain the corresponding codeword as a prefix
+ * when zero-padded on the left to 'max_codeword_len' binary digits.
+ *
+ * That's the basic idea, but we implement two optimizations regarding
+ * the format of the decode table itself:
+ *
+ * - For many compression formats, the maximum codeword length is too
+ * long for it to be efficient to build the full decoding table
+ * whenever a new prefix code is used. Instead, we can build the table
+ * using only 2**table_bits entries, where 'table_bits' is some number
+ * less than or equal to 'max_codeword_len'. Then, only codewords of
+ * length 'table_bits' and shorter can be directly looked up. For
+ * longer codewords, the direct lookup instead produces the root of a
+ * binary tree. Using this tree, the decoder can do traditional
+ * bit-by-bit decoding of the remainder of the codeword. Child nodes
+ * are allocated in extra entries at the end of the table; leaf nodes
+ * contain symbols. Note that the long-codeword case is, in general,
+ * not performance critical, since in Huffman codes the most frequently
+ * used symbols are assigned the shortest codeword lengths.
+ *
+ * - When we decode a symbol using a direct lookup of the table, we still
+ * need to know its length so that the bitstream can be advanced by the
+ * appropriate number of bits. The simple solution is to simply retain
+ * the 'lens' array and use the decoded symbol as an index into it.
+ * However, this requires two separate array accesses in the fast path.
+ * The optimization is to store the length directly in the decode
+ * table. We use the bottom 11 bits for the symbol and the top 5 bits
+ * for the length. In addition, to combine this optimization with the
+ * previous one, we introduce a special case where the top 2 bits of
+ * the length are both set if the entry is actually the root of a
+ * binary tree.
+ *
+ * @decode_table:
+ * The array in which to create the decoding table. This must have
+ * a length of at least ((2**table_bits) + 2 * num_syms) entries.
+ *
+ * @num_syms:
+ * The number of symbols in the alphabet; also, the length of the
+ * 'lens' array. Must be less than or equal to 2048.
+ *
+ * @table_bits:
+ * The order of the decode table size, as explained above. Must be
+ * less than or equal to 13.
+ *
+ * @lens:
+ * An array of length @num_syms, indexable by symbol, that gives the
+ * length of the codeword, in bits, for that symbol. The length can
+ * be 0, which means that the symbol does not have a codeword
+ * assigned.
+ *
+ * @max_codeword_len:
+ * The longest codeword length allowed in the compression format.
+ * All entries in 'lens' must be less than or equal to this value.
+ * This must be less than or equal to 23.
+ *
+ * @working_space
+ * A temporary array of length '2 * (max_codeword_len + 1) +
+ * num_syms'.
+ *
+ * Returns 0 on success, or -1 if the lengths do not form a valid prefix
+ * code.
+ */
+int make_huffman_decode_table(u16 decode_table[], const u32 num_syms,
+ const u32 table_bits, const u8 lens[],
+ const u32 max_codeword_len,
+ u16 working_space[])
+{
+ const u32 table_num_entries = 1 << table_bits;
+ u16 * const len_counts = &working_space[0];
+ u16 * const offsets = &working_space[1 * (max_codeword_len + 1)];
+ u16 * const sorted_syms = &working_space[2 * (max_codeword_len + 1)];
+ int left;
+ void *decode_table_ptr;
+ u32 sym_idx;
+ u32 codeword_len;
+ u32 stores_per_loop;
+ u32 decode_table_pos;
+ u32 len;
+ u32 sym;
+
+ /* Count how many symbols have each possible codeword length.
+ * Note that a length of 0 indicates the corresponding symbol is not
+ * used in the code and therefore does not have a codeword.
+ */
+ for (len = 0; len <= max_codeword_len; len++)
+ len_counts[len] = 0;
+ for (sym = 0; sym < num_syms; sym++)
+ len_counts[lens[sym]]++;
+
+ /* We can assume all lengths are <= max_codeword_len, but we
+ * cannot assume they form a valid prefix code. A codeword of
+ * length n should require a proportion of the codespace equaling
+ * (1/2)^n. The code is valid if and only if the codespace is
+ * exactly filled by the lengths, by this measure.
+ */
+ left = 1;
+ for (len = 1; len <= max_codeword_len; len++) {
+ left <<= 1;
+ left -= len_counts[len];
+ if (left < 0) {
+ /* The lengths overflow the codespace; that is, the code
+ * is over-subscribed.
+ */
+ return -1;
+ }
+ }
+
+ if (left) {
+ /* The lengths do not fill the codespace; that is, they form an
+ * incomplete set.
+ */
+ if (left == (1 << max_codeword_len)) {
+ /* The code is completely empty. This is arguably
+ * invalid, but in fact it is valid in LZX and XPRESS,
+ * so we must allow it. By definition, no symbols can
+ * be decoded with an empty code. Consequently, we
+ * technically don't even need to fill in the decode
+ * table. However, to avoid accessing uninitialized
+ * memory if the algorithm nevertheless attempts to
+ * decode symbols using such a code, we zero out the
+ * decode table.
+ */
+ memset(decode_table, 0,
+ table_num_entries * sizeof(decode_table[0]));
+ return 0;
+ }
+ return -1;
+ }
+
+ /* Sort the symbols primarily by length and secondarily by symbol order.
+ */
+
+ /* Initialize 'offsets' so that offsets[len] for 1 <= len <=
+ * max_codeword_len is the number of codewords shorter than 'len' bits.
+ */
+ offsets[1] = 0;
+ for (len = 1; len < max_codeword_len; len++)
+ offsets[len + 1] = offsets[len] + len_counts[len];
+
+ /* Use the 'offsets' array to sort the symbols. Note that we do not
+ * include symbols that are not used in the code. Consequently, fewer
+ * than 'num_syms' entries in 'sorted_syms' may be filled.
+ */
+ for (sym = 0; sym < num_syms; sym++)
+ if (lens[sym])
+ sorted_syms[offsets[lens[sym]]++] = sym;
+
+ /* Fill entries for codewords with length <= table_bits
+ * --- that is, those short enough for a direct mapping.
+ *
+ * The table will start with entries for the shortest codeword(s), which
+ * have the most entries. From there, the number of entries per
+ * codeword will decrease.
+ */
+ decode_table_ptr = decode_table;
+ sym_idx = 0;
+ codeword_len = 1;
+ stores_per_loop = (1 << (table_bits - codeword_len));
+ for (; stores_per_loop != 0; codeword_len++, stores_per_loop >>= 1) {
+ u32 end_sym_idx = sym_idx + len_counts[codeword_len];
+
+ for (; sym_idx < end_sym_idx; sym_idx++) {
+ u16 entry;
+ u16 *p;
+ u32 n;
+
+ entry = ((u32)codeword_len << 11) | sorted_syms[sym_idx];
+ p = (u16 *)decode_table_ptr;
+ n = stores_per_loop;
+
+ do {
+ *p++ = entry;
+ } while (--n);
+
+ decode_table_ptr = p;
+ }
+ }
+
+ /* If we've filled in the entire table, we are done. Otherwise,
+ * there are codewords longer than table_bits for which we must
+ * generate binary trees.
+ */
+ decode_table_pos = (u16 *)decode_table_ptr - decode_table;
+ if (decode_table_pos != table_num_entries) {
+ u32 j;
+ u32 next_free_tree_slot;
+ u32 cur_codeword;
+
+ /* First, zero out the remaining entries. This is
+ * necessary so that these entries appear as
+ * "unallocated" in the next part. Each of these entries
+ * will eventually be filled with the representation of
+ * the root node of a binary tree.
+ */
+ j = decode_table_pos;
+ do {
+ decode_table[j] = 0;
+ } while (++j != table_num_entries);
+
+ /* We allocate child nodes starting at the end of the
+ * direct lookup table. Note that there should be
+ * 2*num_syms extra entries for this purpose, although
+ * fewer than this may actually be needed.
+ */
+ next_free_tree_slot = table_num_entries;
+
+ /* Iterate through each codeword with length greater than
+ * 'table_bits', primarily in order of codeword length
+ * and secondarily in order of symbol.
+ */
+ for (cur_codeword = decode_table_pos << 1;
+ codeword_len <= max_codeword_len;
+ codeword_len++, cur_codeword <<= 1) {
+ u32 end_sym_idx = sym_idx + len_counts[codeword_len];
+
+ for (; sym_idx < end_sym_idx; sym_idx++, cur_codeword++) {
+ /* 'sorted_sym' is the symbol represented by the
+ * codeword.
+ */
+ u32 sorted_sym = sorted_syms[sym_idx];
+ u32 extra_bits = codeword_len - table_bits;
+ u32 node_idx = cur_codeword >> extra_bits;
+
+ /* Go through each bit of the current codeword
+ * beyond the prefix of length @table_bits and
+ * walk the appropriate binary tree, allocating
+ * any slots that have not yet been allocated.
+ *
+ * Note that the 'pointer' entry to the binary
+ * tree, which is stored in the direct lookup
+ * portion of the table, is represented
+ * identically to other internal (non-leaf)
+ * nodes of the binary tree; it can be thought
+ * of as simply the root of the tree. The
+ * representation of these internal nodes is
+ * simply the index of the left child combined
+ * with the special bits 0xC000 to distingush
+ * the entry from direct mapping and leaf node
+ * entries.
+ */
+ do {
+ /* At least one bit remains in the
+ * codeword, but the current node is an
+ * unallocated leaf. Change it to an
+ * internal node.
+ */
+ if (decode_table[node_idx] == 0) {
+ decode_table[node_idx] =
+ next_free_tree_slot | 0xC000;
+ decode_table[next_free_tree_slot++] = 0;
+ decode_table[next_free_tree_slot++] = 0;
+ }
+
+ /* Go to the left child if the next bit
+ * in the codeword is 0; otherwise go to
+ * the right child.
+ */
+ node_idx = decode_table[node_idx] & 0x3FFF;
+ --extra_bits;
+ node_idx += (cur_codeword >> extra_bits) & 1;
+ } while (extra_bits != 0);
+
+ /* We've traversed the tree using the entire
+ * codeword, and we're now at the entry where
+ * the actual symbol will be stored. This is
+ * distinguished from internal nodes by not
+ * having its high two bits set.
+ */
+ decode_table[node_idx] = sorted_sym;
+ }
+ }
+ }
+ return 0;
+}
diff --git a/fs/ntfs3/lib/decompress_common.h b/fs/ntfs3/lib/decompress_common.h
new file mode 100644
index 000000000000..66297f398403
--- /dev/null
+++ b/fs/ntfs3/lib/decompress_common.h
@@ -0,0 +1,352 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+/*
+ * decompress_common.h - Code shared by the XPRESS and LZX decompressors
+ *
+ * Copyright (C) 2015 Eric Biggers
+ *
+ * This program is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free Software
+ * Foundation, either version 2 of the License, or (at your option) any later
+ * version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/string.h>
+#include <linux/compiler.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <asm/unaligned.h>
+
+
+/* "Force inline" macro (not required, but helpful for performance) */
+#define forceinline __always_inline
+
+/* Enable whole-word match copying on selected architectures */
+#if defined(__i386__) || defined(__x86_64__) || defined(__ARM_FEATURE_UNALIGNED)
+# define FAST_UNALIGNED_ACCESS
+#endif
+
+/* Size of a machine word */
+#define WORDBYTES (sizeof(size_t))
+
+static forceinline void
+copy_unaligned_word(const void *src, void *dst)
+{
+ put_unaligned(get_unaligned((const size_t *)src), (size_t *)dst);
+}
+
+
+/* Generate a "word" with platform-dependent size whose bytes all contain the
+ * value 'b'.
+ */
+static forceinline size_t repeat_byte(u8 b)
+{
+ size_t v;
+
+ v = b;
+ v |= v << 8;
+ v |= v << 16;
+ v |= v << ((WORDBYTES == 8) ? 32 : 0);
+ return v;
+}
+
+/* Structure that encapsulates a block of in-memory data being interpreted as a
+ * stream of bits, optionally with interwoven literal bytes. Bits are assumed
+ * to be stored in little endian 16-bit coding units, with the bits ordered high
+ * to low.
+ */
+struct input_bitstream {
+
+ /* Bits that have been read from the input buffer. The bits are
+ * left-justified; the next bit is always bit 31.
+ */
+ u32 bitbuf;
+
+ /* Number of bits currently held in @bitbuf. */
+ u32 bitsleft;
+
+ /* Pointer to the next byte to be retrieved from the input buffer. */
+ const u8 *next;
+
+ /* Pointer to just past the end of the input buffer. */
+ const u8 *end;
+};
+
+/* Initialize a bitstream to read from the specified input buffer. */
+static forceinline void init_input_bitstream(struct input_bitstream *is,
+ const void *buffer, u32 size)
+{
+ is->bitbuf = 0;
+ is->bitsleft = 0;
+ is->next = buffer;
+ is->end = is->next + size;
+}
+
+/* Ensure the bit buffer variable for the bitstream contains at least @num_bits
+ * bits. Following this, bitstream_peek_bits() and/or bitstream_remove_bits()
+ * may be called on the bitstream to peek or remove up to @num_bits bits. Note
+ * that @num_bits must be <= 16.
+ */
+static forceinline void bitstream_ensure_bits(struct input_bitstream *is,
+ u32 num_bits)
+{
+ if (is->bitsleft < num_bits) {
+ if (is->end - is->next >= 2) {
+ is->bitbuf |= (u32)get_unaligned_le16(is->next)
+ << (16 - is->bitsleft);
+ is->next += 2;
+ }
+ is->bitsleft += 16;
+ }
+}
+
+/* Return the next @num_bits bits from the bitstream, without removing them.
+ * There must be at least @num_bits remaining in the buffer variable, from a
+ * previous call to bitstream_ensure_bits().
+ */
+static forceinline u32
+bitstream_peek_bits(const struct input_bitstream *is, const u32 num_bits)
+{
+ return (is->bitbuf >> 1) >> (sizeof(is->bitbuf) * 8 - num_bits - 1);
+}
+
+/* Remove @num_bits from the bitstream. There must be at least @num_bits
+ * remaining in the buffer variable, from a previous call to
+ * bitstream_ensure_bits().
+ */
+static forceinline void
+bitstream_remove_bits(struct input_bitstream *is, u32 num_bits)
+{
+ is->bitbuf <<= num_bits;
+ is->bitsleft -= num_bits;
+}
+
+/* Remove and return @num_bits bits from the bitstream. There must be at least
+ * @num_bits remaining in the buffer variable, from a previous call to
+ * bitstream_ensure_bits().
+ */
+static forceinline u32
+bitstream_pop_bits(struct input_bitstream *is, u32 num_bits)
+{
+ u32 bits = bitstream_peek_bits(is, num_bits);
+
+ bitstream_remove_bits(is, num_bits);
+ return bits;
+}
+
+/* Read and return the next @num_bits bits from the bitstream. */
+static forceinline u32
+bitstream_read_bits(struct input_bitstream *is, u32 num_bits)
+{
+ bitstream_ensure_bits(is, num_bits);
+ return bitstream_pop_bits(is, num_bits);
+}
+
+/* Read and return the next literal byte embedded in the bitstream. */
+static forceinline u8
+bitstream_read_byte(struct input_bitstream *is)
+{
+ if (unlikely(is->end == is->next))
+ return 0;
+ return *is->next++;
+}
+
+/* Read and return the next 16-bit integer embedded in the bitstream. */
+static forceinline u16
+bitstream_read_u16(struct input_bitstream *is)
+{
+ u16 v;
+
+ if (unlikely(is->end - is->next < 2))
+ return 0;
+ v = get_unaligned_le16(is->next);
+ is->next += 2;
+ return v;
+}
+
+/* Read and return the next 32-bit integer embedded in the bitstream. */
+static forceinline u32
+bitstream_read_u32(struct input_bitstream *is)
+{
+ u32 v;
+
+ if (unlikely(is->end - is->next < 4))
+ return 0;
+ v = get_unaligned_le32(is->next);
+ is->next += 4;
+ return v;
+}
+
+/* Read into @dst_buffer an array of literal bytes embedded in the bitstream.
+ * Return either a pointer to the byte past the last written, or NULL if the
+ * read overflows the input buffer.
+ */
+static forceinline void *bitstream_read_bytes(struct input_bitstream *is,
+ void *dst_buffer, size_t count)
+{
+ if ((size_t)(is->end - is->next) < count)
+ return NULL;
+ memcpy(dst_buffer, is->next, count);
+ is->next += count;
+ return (u8 *)dst_buffer + count;
+}
+
+/* Align the input bitstream on a coding-unit boundary. */
+static forceinline void bitstream_align(struct input_bitstream *is)
+{
+ is->bitsleft = 0;
+ is->bitbuf = 0;
+}
+
+extern int make_huffman_decode_table(u16 decode_table[], const u32 num_syms,
+ const u32 num_bits, const u8 lens[],
+ const u32 max_codeword_len,
+ u16 working_space[]);
+
+
+/* Reads and returns the next Huffman-encoded symbol from a bitstream. If the
+ * input data is exhausted, the Huffman symbol is decoded as if the missing bits
+ * are all zeroes.
+ */
+static forceinline u32 read_huffsym(struct input_bitstream *istream,
+ const u16 decode_table[],
+ u32 table_bits,
+ u32 max_codeword_len)
+{
+ u32 entry;
+ u32 key_bits;
+
+ bitstream_ensure_bits(istream, max_codeword_len);
+
+ /* Index the decode table by the next table_bits bits of the input. */
+ key_bits = bitstream_peek_bits(istream, table_bits);
+ entry = decode_table[key_bits];
+ if (entry < 0xC000) {
+ /* Fast case: The decode table directly provided the
+ * symbol and codeword length. The low 11 bits are the
+ * symbol, and the high 5 bits are the codeword length.
+ */
+ bitstream_remove_bits(istream, entry >> 11);
+ return entry & 0x7FF;
+ }
+ /* Slow case: The codeword for the symbol is longer than
+ * table_bits, so the symbol does not have an entry
+ * directly in the first (1 << table_bits) entries of the
+ * decode table. Traverse the appropriate binary tree
+ * bit-by-bit to decode the symbol.
+ */
+ bitstream_remove_bits(istream, table_bits);
+ do {
+ key_bits = (entry & 0x3FFF) + bitstream_pop_bits(istream, 1);
+ } while ((entry = decode_table[key_bits]) >= 0xC000);
+ return entry;
+}
+
+/*
+ * Copy an LZ77 match at (dst - offset) to dst.
+ *
+ * The length and offset must be already validated --- that is, (dst - offset)
+ * can't underrun the output buffer, and (dst + length) can't overrun the output
+ * buffer. Also, the length cannot be 0.
+ *
+ * @bufend points to the byte past the end of the output buffer. This function
+ * won't write any data beyond this position.
+ *
+ * Returns dst + length.
+ */
+static forceinline u8 *lz_copy(u8 *dst, u32 length, u32 offset, const u8 *bufend,
+ u32 min_length)
+{
+ const u8 *src = dst - offset;
+
+ /*
+ * Try to copy one machine word at a time. On i386 and x86_64 this is
+ * faster than copying one byte at a time, unless the data is
+ * near-random and all the matches have very short lengths. Note that
+ * since this requires unaligned memory accesses, it won't necessarily
+ * be faster on every architecture.
+ *
+ * Also note that we might copy more than the length of the match. For
+ * example, if a word is 8 bytes and the match is of length 5, then
+ * we'll simply copy 8 bytes. This is okay as long as we don't write
+ * beyond the end of the output buffer, hence the check for (bufend -
+ * end >= WORDBYTES - 1).
+ */
+#ifdef FAST_UNALIGNED_ACCESS
+ u8 * const end = dst + length;
+
+ if (bufend - end >= (ptrdiff_t)(WORDBYTES - 1)) {
+
+ if (offset >= WORDBYTES) {
+ /* The source and destination words don't overlap. */
+
+ /* To improve branch prediction, one iteration of this
+ * loop is unrolled. Most matches are short and will
+ * fail the first check. But if that check passes, then
+ * it becomes increasing likely that the match is long
+ * and we'll need to continue copying.
+ */
+
+ copy_unaligned_word(src, dst);
+ src += WORDBYTES;
+ dst += WORDBYTES;
+
+ if (dst < end) {
+ do {
+ copy_unaligned_word(src, dst);
+ src += WORDBYTES;
+ dst += WORDBYTES;
+ } while (dst < end);
+ }
+ return end;
+ } else if (offset == 1) {
+
+ /* Offset 1 matches are equivalent to run-length
+ * encoding of the previous byte. This case is common
+ * if the data contains many repeated bytes.
+ */
+ size_t v = repeat_byte(*(dst - 1));
+
+ do {
+ put_unaligned(v, (size_t *)dst);
+ src += WORDBYTES;
+ dst += WORDBYTES;
+ } while (dst < end);
+ return end;
+ }
+ /*
+ * We don't bother with special cases for other 'offset <
+ * WORDBYTES', which are usually rarer than 'offset == 1'. Extra
+ * checks will just slow things down. Actually, it's possible
+ * to handle all the 'offset < WORDBYTES' cases using the same
+ * code, but it still becomes more complicated doesn't seem any
+ * faster overall; it definitely slows down the more common
+ * 'offset == 1' case.
+ */
+ }
+#endif /* FAST_UNALIGNED_ACCESS */
+
+ /* Fall back to a bytewise copy. */
+
+ if (min_length >= 2) {
+ *dst++ = *src++;
+ length--;
+ }
+ if (min_length >= 3) {
+ *dst++ = *src++;
+ length--;
+ }
+ do {
+ *dst++ = *src++;
+ } while (--length);
+
+ return dst;
+}
diff --git a/fs/ntfs3/lib/lib.h b/fs/ntfs3/lib/lib.h
new file mode 100644
index 000000000000..f508fbad2e71
--- /dev/null
+++ b/fs/ntfs3/lib/lib.h
@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Adapted for linux kernel by Alexander Mamaev:
+ * - remove implementations of get_unaligned_
+ * - assume GCC is always defined
+ * - ISO C90
+ * - linux kernel code style
+ */
+
+
+/* globals from xpress_decompress.c */
+struct xpress_decompressor *xpress_allocate_decompressor(void);
+void xpress_free_decompressor(struct xpress_decompressor *d);
+int xpress_decompress(struct xpress_decompressor *__restrict d,
+ const void *__restrict compressed_data,
+ size_t compressed_size,
+ void *__restrict uncompressed_data,
+ size_t uncompressed_size);
+
+/* globals from lzx_decompress.c */
+struct lzx_decompressor *lzx_allocate_decompressor(void);
+void lzx_free_decompressor(struct lzx_decompressor *d);
+int lzx_decompress(struct lzx_decompressor *__restrict d,
+ const void *__restrict compressed_data,
+ size_t compressed_size, void *__restrict uncompressed_data,
+ size_t uncompressed_size);
diff --git a/fs/ntfs3/lib/lzx_decompress.c b/fs/ntfs3/lib/lzx_decompress.c
new file mode 100644
index 000000000000..77a381a693d1
--- /dev/null
+++ b/fs/ntfs3/lib/lzx_decompress.c
@@ -0,0 +1,683 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * lzx_decompress.c - A decompressor for the LZX compression format, which can
+ * be used in "System Compressed" files. This is based on the code from wimlib.
+ * This code only supports a window size (dictionary size) of 32768 bytes, since
+ * this is the only size used in System Compression.
+ *
+ * Copyright (C) 2015 Eric Biggers
+ *
+ * This program is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free Software
+ * Foundation, either version 2 of the License, or (at your option) any later
+ * version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "decompress_common.h"
+#include "lib.h"
+
+/* Number of literal byte values */
+#define LZX_NUM_CHARS 256
+
+/* The smallest and largest allowed match lengths */
+#define LZX_MIN_MATCH_LEN 2
+#define LZX_MAX_MATCH_LEN 257
+
+/* Number of distinct match lengths that can be represented */
+#define LZX_NUM_LENS (LZX_MAX_MATCH_LEN - LZX_MIN_MATCH_LEN + 1)
+
+/* Number of match lengths for which no length symbol is required */
+#define LZX_NUM_PRIMARY_LENS 7
+#define LZX_NUM_LEN_HEADERS (LZX_NUM_PRIMARY_LENS + 1)
+
+/* Valid values of the 3-bit block type field */
+#define LZX_BLOCKTYPE_VERBATIM 1
+#define LZX_BLOCKTYPE_ALIGNED 2
+#define LZX_BLOCKTYPE_UNCOMPRESSED 3
+
+/* Number of offset slots for a window size of 32768 */
+#define LZX_NUM_OFFSET_SLOTS 30
+
+/* Number of symbols in the main code for a window size of 32768 */
+#define LZX_MAINCODE_NUM_SYMBOLS \
+ (LZX_NUM_CHARS + (LZX_NUM_OFFSET_SLOTS * LZX_NUM_LEN_HEADERS))
+
+/* Number of symbols in the length code */
+#define LZX_LENCODE_NUM_SYMBOLS (LZX_NUM_LENS - LZX_NUM_PRIMARY_LENS)
+
+/* Number of symbols in the precode */
+#define LZX_PRECODE_NUM_SYMBOLS 20
+
+/* Number of bits in which each precode codeword length is represented */
+#define LZX_PRECODE_ELEMENT_SIZE 4
+
+/* Number of low-order bits of each match offset that are entropy-encoded in
+ * aligned offset blocks
+ */
+#define LZX_NUM_ALIGNED_OFFSET_BITS 3
+
+/* Number of symbols in the aligned offset code */
+#define LZX_ALIGNEDCODE_NUM_SYMBOLS (1 << LZX_NUM_ALIGNED_OFFSET_BITS)
+
+/* Mask for the match offset bits that are entropy-encoded in aligned offset
+ * blocks
+ */
+#define LZX_ALIGNED_OFFSET_BITMASK ((1 << LZX_NUM_ALIGNED_OFFSET_BITS) - 1)
+
+/* Number of bits in which each aligned offset codeword length is represented */
+#define LZX_ALIGNEDCODE_ELEMENT_SIZE 3
+
+/* Maximum lengths (in bits) of the codewords in each Huffman code */
+#define LZX_MAX_MAIN_CODEWORD_LEN 16
+#define LZX_MAX_LEN_CODEWORD_LEN 16
+#define LZX_MAX_PRE_CODEWORD_LEN ((1 << LZX_PRECODE_ELEMENT_SIZE) - 1)
+#define LZX_MAX_ALIGNED_CODEWORD_LEN ((1 << LZX_ALIGNEDCODE_ELEMENT_SIZE) - 1)
+
+/* The default "filesize" value used in pre/post-processing. In the LZX format
+ * used in cabinet files this value must be given to the decompressor, whereas
+ * in the LZX format used in WIM files and system-compressed files this value is
+ * fixed at 12000000.
+ */
+#define LZX_DEFAULT_FILESIZE 12000000
+
+/* Assumed block size when the encoded block size begins with a 0 bit. */
+#define LZX_DEFAULT_BLOCK_SIZE 32768
+
+/* Number of offsets in the recent (or "repeat") offsets queue. */
+#define LZX_NUM_RECENT_OFFSETS 3
+
+/* These values are chosen for fast decompression. */
+#define LZX_MAINCODE_TABLEBITS 11
+#define LZX_LENCODE_TABLEBITS 10
+#define LZX_PRECODE_TABLEBITS 6
+#define LZX_ALIGNEDCODE_TABLEBITS 7
+
+#define LZX_READ_LENS_MAX_OVERRUN 50
+
+/* Mapping: offset slot => first match offset that uses that offset slot.
+ */
+static const u32 lzx_offset_slot_base[LZX_NUM_OFFSET_SLOTS + 1] = {
+ 0, 1, 2, 3, 4, /* 0 --- 4 */
+ 6, 8, 12, 16, 24, /* 5 --- 9 */
+ 32, 48, 64, 96, 128, /* 10 --- 14 */
+ 192, 256, 384, 512, 768, /* 15 --- 19 */
+ 1024, 1536, 2048, 3072, 4096, /* 20 --- 24 */
+ 6144, 8192, 12288, 16384, 24576, /* 25 --- 29 */
+ 32768, /* extra */
+};
+
+/* Mapping: offset slot => how many extra bits must be read and added to the
+ * corresponding offset slot base to decode the match offset.
+ */
+static const u8 lzx_extra_offset_bits[LZX_NUM_OFFSET_SLOTS] = {
+ 0, 0, 0, 0, 1,
+ 1, 2, 2, 3, 3,
+ 4, 4, 5, 5, 6,
+ 6, 7, 7, 8, 8,
+ 9, 9, 10, 10, 11,
+ 11, 12, 12, 13, 13,
+};
+
+/* Reusable heap-allocated memory for LZX decompression */
+struct lzx_decompressor {
+
+ /* Huffman decoding tables, and arrays that map symbols to codeword
+ * lengths
+ */
+
+ u16 maincode_decode_table[(1 << LZX_MAINCODE_TABLEBITS) +
+ (LZX_MAINCODE_NUM_SYMBOLS * 2)];
+ u8 maincode_lens[LZX_MAINCODE_NUM_SYMBOLS + LZX_READ_LENS_MAX_OVERRUN];
+
+
+ u16 lencode_decode_table[(1 << LZX_LENCODE_TABLEBITS) +
+ (LZX_LENCODE_NUM_SYMBOLS * 2)];
+ u8 lencode_lens[LZX_LENCODE_NUM_SYMBOLS + LZX_READ_LENS_MAX_OVERRUN];
+
+
+ u16 alignedcode_decode_table[(1 << LZX_ALIGNEDCODE_TABLEBITS) +
+ (LZX_ALIGNEDCODE_NUM_SYMBOLS * 2)];
+ u8 alignedcode_lens[LZX_ALIGNEDCODE_NUM_SYMBOLS];
+
+ u16 precode_decode_table[(1 << LZX_PRECODE_TABLEBITS) +
+ (LZX_PRECODE_NUM_SYMBOLS * 2)];
+ u8 precode_lens[LZX_PRECODE_NUM_SYMBOLS];
+
+ /* Temporary space for make_huffman_decode_table() */
+ u16 working_space[2 * (1 + LZX_MAX_MAIN_CODEWORD_LEN) +
+ LZX_MAINCODE_NUM_SYMBOLS];
+};
+
+static void undo_e8_translation(void *target, s32 input_pos)
+{
+ s32 abs_offset, rel_offset;
+
+ abs_offset = get_unaligned_le32(target);
+ if (abs_offset >= 0) {
+ if (abs_offset < LZX_DEFAULT_FILESIZE) {
+ /* "good translation" */
+ rel_offset = abs_offset - input_pos;
+ put_unaligned_le32(rel_offset, target);
+ }
+ } else {
+ if (abs_offset >= -input_pos) {
+ /* "compensating translation" */
+ rel_offset = abs_offset + LZX_DEFAULT_FILESIZE;
+ put_unaligned_le32(rel_offset, target);
+ }
+ }
+}
+
+/*
+ * Undo the 'E8' preprocessing used in LZX. Before compression, the
+ * uncompressed data was preprocessed by changing the targets of suspected x86
+ * CALL instructions from relative offsets to absolute offsets. After
+ * match/literal decoding, the decompressor must undo the translation.
+ */
+static void lzx_postprocess(u8 *data, u32 size)
+{
+ /*
+ * A worthwhile optimization is to push the end-of-buffer check into the
+ * relatively rare E8 case. This is possible if we replace the last six
+ * bytes of data with E8 bytes; then we are guaranteed to hit an E8 byte
+ * before reaching end-of-buffer. In addition, this scheme guarantees
+ * that no translation can begin following an E8 byte in the last 10
+ * bytes because a 4-byte offset containing E8 as its high byte is a
+ * large negative number that is not valid for translation. That is
+ * exactly what we need.
+ */
+ u8 *tail;
+ u8 saved_bytes[6];
+ u8 *p;
+
+ if (size <= 10)
+ return;
+
+ tail = &data[size - 6];
+ memcpy(saved_bytes, tail, 6);
+ memset(tail, 0xE8, 6);
+ p = data;
+ for (;;) {
+ while (*p != 0xE8)
+ p++;
+ if (p >= tail)
+ break;
+ undo_e8_translation(p + 1, p - data);
+ p += 5;
+ }
+ memcpy(tail, saved_bytes, 6);
+}
+
+/* Read a Huffman-encoded symbol using the precode. */
+static forceinline u32 read_presym(const struct lzx_decompressor *d,
+ struct input_bitstream *is)
+{
+ return read_huffsym(is, d->precode_decode_table,
+ LZX_PRECODE_TABLEBITS, LZX_MAX_PRE_CODEWORD_LEN);
+}
+
+/* Read a Huffman-encoded symbol using the main code. */
+static forceinline u32 read_mainsym(const struct lzx_decompressor *d,
+ struct input_bitstream *is)
+{
+ return read_huffsym(is, d->maincode_decode_table,
+ LZX_MAINCODE_TABLEBITS, LZX_MAX_MAIN_CODEWORD_LEN);
+}
+
+/* Read a Huffman-encoded symbol using the length code. */
+static forceinline u32 read_lensym(const struct lzx_decompressor *d,
+ struct input_bitstream *is)
+{
+ return read_huffsym(is, d->lencode_decode_table,
+ LZX_LENCODE_TABLEBITS, LZX_MAX_LEN_CODEWORD_LEN);
+}
+
+/* Read a Huffman-encoded symbol using the aligned offset code. */
+static forceinline u32 read_alignedsym(const struct lzx_decompressor *d,
+ struct input_bitstream *is)
+{
+ return read_huffsym(is, d->alignedcode_decode_table,
+ LZX_ALIGNEDCODE_TABLEBITS,
+ LZX_MAX_ALIGNED_CODEWORD_LEN);
+}
+
+/*
+ * Read the precode from the compressed input bitstream, then use it to decode
+ * @num_lens codeword length values.
+ *
+ * @is: The input bitstream.
+ *
+ * @lens: An array that contains the length values from the previous time
+ * the codeword lengths for this Huffman code were read, or all 0's
+ * if this is the first time. This array must have at least
+ * (@num_lens + LZX_READ_LENS_MAX_OVERRUN) entries.
+ *
+ * @num_lens: Number of length values to decode.
+ *
+ * Returns 0 on success, or -1 if the data was invalid.
+ */
+static int lzx_read_codeword_lens(struct lzx_decompressor *d,
+ struct input_bitstream *is,
+ u8 *lens, u32 num_lens)
+{
+ u8 *len_ptr = lens;
+ u8 *lens_end = lens + num_lens;
+ int i;
+
+ /* Read the lengths of the precode codewords. These are given
+ * explicitly.
+ */
+ for (i = 0; i < LZX_PRECODE_NUM_SYMBOLS; i++) {
+ d->precode_lens[i] =
+ bitstream_read_bits(is, LZX_PRECODE_ELEMENT_SIZE);
+ }
+
+ /* Make the decoding table for the precode. */
+ if (make_huffman_decode_table(d->precode_decode_table,
+ LZX_PRECODE_NUM_SYMBOLS,
+ LZX_PRECODE_TABLEBITS,
+ d->precode_lens,
+ LZX_MAX_PRE_CODEWORD_LEN,
+ d->working_space))
+ return -1;
+
+ /* Decode the codeword lengths. */
+ do {
+ u32 presym;
+ u8 len;
+
+ /* Read the next precode symbol. */
+ presym = read_presym(d, is);
+ if (presym < 17) {
+ /* Difference from old length */
+ len = *len_ptr - presym;
+ if ((s8)len < 0)
+ len += 17;
+ *len_ptr++ = len;
+ } else {
+ /* Special RLE values */
+
+ u32 run_len;
+
+ if (presym == 17) {
+ /* Run of 0's */
+ run_len = 4 + bitstream_read_bits(is, 4);
+ len = 0;
+ } else if (presym == 18) {
+ /* Longer run of 0's */
+ run_len = 20 + bitstream_read_bits(is, 5);
+ len = 0;
+ } else {
+ /* Run of identical lengths */
+ run_len = 4 + bitstream_read_bits(is, 1);
+ presym = read_presym(d, is);
+ if (presym > 17)
+ return -1;
+ len = *len_ptr - presym;
+ if ((s8)len < 0)
+ len += 17;
+ }
+
+ do {
+ *len_ptr++ = len;
+ } while (--run_len);
+ /* Worst case overrun is when presym == 18,
+ * run_len == 20 + 31, and only 1 length was remaining.
+ * So LZX_READ_LENS_MAX_OVERRUN == 50.
+ *
+ * Overrun while reading the first half of maincode_lens
+ * can corrupt the previous values in the second half.
+ * This doesn't really matter because the resulting
+ * lengths will still be in range, and data that
+ * generates overruns is invalid anyway.
+ */
+ }
+ } while (len_ptr < lens_end);
+
+ return 0;
+}
+
+/*
+ * Read the header of an LZX block and save the block type and (uncompressed)
+ * size in *block_type_ret and *block_size_ret, respectively.
+ *
+ * If the block is compressed, also update the Huffman decode @tables with the
+ * new Huffman codes. If the block is uncompressed, also update the match
+ * offset @queue with the new match offsets.
+ *
+ * Return 0 on success, or -1 if the data was invalid.
+ */
+static int lzx_read_block_header(struct lzx_decompressor *d,
+ struct input_bitstream *is,
+ int *block_type_ret,
+ u32 *block_size_ret,
+ u32 recent_offsets[])
+{
+ int block_type;
+ u32 block_size;
+ int i;
+
+ bitstream_ensure_bits(is, 4);
+
+ /* The first three bits tell us what kind of block it is, and should be
+ * one of the LZX_BLOCKTYPE_* values.
+ */
+ block_type = bitstream_pop_bits(is, 3);
+
+ /* Read the block size. */
+ if (bitstream_pop_bits(is, 1)) {
+ block_size = LZX_DEFAULT_BLOCK_SIZE;
+ } else {
+ block_size = 0;
+ block_size |= bitstream_read_bits(is, 8);
+ block_size <<= 8;
+ block_size |= bitstream_read_bits(is, 8);
+ }
+
+ switch (block_type) {
+
+ case LZX_BLOCKTYPE_ALIGNED:
+
+ /* Read the aligned offset code and prepare its decode table.
+ */
+
+ for (i = 0; i < LZX_ALIGNEDCODE_NUM_SYMBOLS; i++) {
+ d->alignedcode_lens[i] =
+ bitstream_read_bits(is,
+ LZX_ALIGNEDCODE_ELEMENT_SIZE);
+ }
+
+ if (make_huffman_decode_table(d->alignedcode_decode_table,
+ LZX_ALIGNEDCODE_NUM_SYMBOLS,
+ LZX_ALIGNEDCODE_TABLEBITS,
+ d->alignedcode_lens,
+ LZX_MAX_ALIGNED_CODEWORD_LEN,
+ d->working_space))
+ return -1;
+
+ /* Fall though, since the rest of the header for aligned offset
+ * blocks is the same as that for verbatim blocks.
+ */
+ fallthrough;
+
+ case LZX_BLOCKTYPE_VERBATIM:
+
+ /* Read the main code and prepare its decode table.
+ *
+ * Note that the codeword lengths in the main code are encoded
+ * in two parts: one part for literal symbols, and one part for
+ * match symbols.
+ */
+
+ if (lzx_read_codeword_lens(d, is, d->maincode_lens,
+ LZX_NUM_CHARS))
+ return -1;
+
+ if (lzx_read_codeword_lens(d, is,
+ d->maincode_lens + LZX_NUM_CHARS,
+ LZX_MAINCODE_NUM_SYMBOLS - LZX_NUM_CHARS))
+ return -1;
+
+ if (make_huffman_decode_table(d->maincode_decode_table,
+ LZX_MAINCODE_NUM_SYMBOLS,
+ LZX_MAINCODE_TABLEBITS,
+ d->maincode_lens,
+ LZX_MAX_MAIN_CODEWORD_LEN,
+ d->working_space))
+ return -1;
+
+ /* Read the length code and prepare its decode table. */
+
+ if (lzx_read_codeword_lens(d, is, d->lencode_lens,
+ LZX_LENCODE_NUM_SYMBOLS))
+ return -1;
+
+ if (make_huffman_decode_table(d->lencode_decode_table,
+ LZX_LENCODE_NUM_SYMBOLS,
+ LZX_LENCODE_TABLEBITS,
+ d->lencode_lens,
+ LZX_MAX_LEN_CODEWORD_LEN,
+ d->working_space))
+ return -1;
+
+ break;
+
+ case LZX_BLOCKTYPE_UNCOMPRESSED:
+
+ /* Before reading the three recent offsets from the uncompressed
+ * block header, the stream must be aligned on a 16-bit
+ * boundary. But if the stream is *already* aligned, then the
+ * next 16 bits must be discarded.
+ */
+ bitstream_ensure_bits(is, 1);
+ bitstream_align(is);
+
+ recent_offsets[0] = bitstream_read_u32(is);
+ recent_offsets[1] = bitstream_read_u32(is);
+ recent_offsets[2] = bitstream_read_u32(is);
+
+ /* Offsets of 0 are invalid. */
+ if (recent_offsets[0] == 0 || recent_offsets[1] == 0 ||
+ recent_offsets[2] == 0)
+ return -1;
+ break;
+
+ default:
+ /* Unrecognized block type. */
+ return -1;
+ }
+
+ *block_type_ret = block_type;
+ *block_size_ret = block_size;
+ return 0;
+}
+
+/* Decompress a block of LZX-compressed data. */
+static int lzx_decompress_block(const struct lzx_decompressor *d,
+ struct input_bitstream *is,
+ int block_type, u32 block_size,
+ u8 * const out_begin, u8 *out_next,
+ u32 recent_offsets[])
+{
+ u8 * const block_end = out_next + block_size;
+ u32 ones_if_aligned = 0U - (block_type == LZX_BLOCKTYPE_ALIGNED);
+
+ do {
+ u32 mainsym;
+ u32 match_len;
+ u32 match_offset;
+ u32 offset_slot;
+ u32 num_extra_bits;
+
+ mainsym = read_mainsym(d, is);
+ if (mainsym < LZX_NUM_CHARS) {
+ /* Literal */
+ *out_next++ = mainsym;
+ continue;
+ }
+
+ /* Match */
+
+ /* Decode the length header and offset slot. */
+ mainsym -= LZX_NUM_CHARS;
+ match_len = mainsym % LZX_NUM_LEN_HEADERS;
+ offset_slot = mainsym / LZX_NUM_LEN_HEADERS;
+
+ /* If needed, read a length symbol to decode the full length. */
+ if (match_len == LZX_NUM_PRIMARY_LENS)
+ match_len += read_lensym(d, is);
+ match_len += LZX_MIN_MATCH_LEN;
+
+ if (offset_slot < LZX_NUM_RECENT_OFFSETS) {
+ /* Repeat offset */
+
+ /* Note: This isn't a real LRU queue, since using the R2
+ * offset doesn't bump the R1 offset down to R2. This
+ * quirk allows all 3 recent offsets to be handled by
+ * the same code. (For R0, the swap is a no-op.)
+ */
+ match_offset = recent_offsets[offset_slot];
+ recent_offsets[offset_slot] = recent_offsets[0];
+ recent_offsets[0] = match_offset;
+ } else {
+ /* Explicit offset */
+
+ /* Look up the number of extra bits that need to be read
+ * to decode offsets with this offset slot.
+ */
+ num_extra_bits = lzx_extra_offset_bits[offset_slot];
+
+ /* Start with the offset slot base value. */
+ match_offset = lzx_offset_slot_base[offset_slot];
+
+ /* In aligned offset blocks, the low-order 3 bits of
+ * each offset are encoded using the aligned offset
+ * code. Otherwise, all the extra bits are literal.
+ */
+
+ if ((num_extra_bits & ones_if_aligned) >= LZX_NUM_ALIGNED_OFFSET_BITS) {
+ match_offset +=
+ bitstream_read_bits(is, num_extra_bits -
+ LZX_NUM_ALIGNED_OFFSET_BITS)
+ << LZX_NUM_ALIGNED_OFFSET_BITS;
+ match_offset += read_alignedsym(d, is);
+ } else {
+ match_offset += bitstream_read_bits(is, num_extra_bits);
+ }
+
+ /* Adjust the offset. */
+ match_offset -= (LZX_NUM_RECENT_OFFSETS - 1);
+
+ /* Update the recent offsets. */
+ recent_offsets[2] = recent_offsets[1];
+ recent_offsets[1] = recent_offsets[0];
+ recent_offsets[0] = match_offset;
+ }
+
+ /* Validate the match, then copy it to the current position. */
+
+ if (match_len > (size_t)(block_end - out_next))
+ return -1;
+
+ if (match_offset > (size_t)(out_next - out_begin))
+ return -1;
+
+ out_next = lz_copy(out_next, match_len, match_offset,
+ block_end, LZX_MIN_MATCH_LEN);
+
+ } while (out_next != block_end);
+
+ return 0;
+}
+
+/*
+ * lzx_allocate_decompressor - Allocate an LZX decompressor
+ *
+ * Return the pointer to the decompressor on success, or return NULL and set
+ * errno on failure.
+ */
+struct lzx_decompressor *lzx_allocate_decompressor(void)
+{
+ return kmalloc(sizeof(struct lzx_decompressor), GFP_NOFS);
+}
+
+/*
+ * lzx_decompress - Decompress a buffer of LZX-compressed data
+ *
+ * @decompressor: A decompressor allocated with lzx_allocate_decompressor()
+ * @compressed_data: The buffer of data to decompress
+ * @compressed_size: Number of bytes of compressed data
+ * @uncompressed_data: The buffer in which to store the decompressed data
+ * @uncompressed_size: The number of bytes the data decompresses into
+ *
+ * Return 0 on success, or return -1 and set errno on failure.
+ */
+int lzx_decompress(struct lzx_decompressor *decompressor,
+ const void *compressed_data, size_t compressed_size,
+ void *uncompressed_data, size_t uncompressed_size)
+{
+ struct lzx_decompressor *d = decompressor;
+ u8 * const out_begin = uncompressed_data;
+ u8 *out_next = out_begin;
+ u8 * const out_end = out_begin + uncompressed_size;
+ struct input_bitstream is;
+ u32 recent_offsets[LZX_NUM_RECENT_OFFSETS] = {1, 1, 1};
+ int e8_status = 0;
+
+ init_input_bitstream(&is, compressed_data, compressed_size);
+
+ /* Codeword lengths begin as all 0's for delta encoding purposes. */
+ memset(d->maincode_lens, 0, LZX_MAINCODE_NUM_SYMBOLS);
+ memset(d->lencode_lens, 0, LZX_LENCODE_NUM_SYMBOLS);
+
+ /* Decompress blocks until we have all the uncompressed data. */
+
+ while (out_next != out_end) {
+ int block_type;
+ u32 block_size;
+
+ if (lzx_read_block_header(d, &is, &block_type, &block_size,
+ recent_offsets))
+ goto invalid;
+
+ if (block_size < 1 || block_size > (size_t)(out_end - out_next))
+ goto invalid;
+
+ if (block_type != LZX_BLOCKTYPE_UNCOMPRESSED) {
+
+ /* Compressed block */
+
+ if (lzx_decompress_block(d,
+ &is,
+ block_type,
+ block_size,
+ out_begin,
+ out_next,
+ recent_offsets))
+ goto invalid;
+
+ e8_status |= d->maincode_lens[0xe8];
+ out_next += block_size;
+ } else {
+ /* Uncompressed block */
+
+ out_next = bitstream_read_bytes(&is, out_next,
+ block_size);
+ if (!out_next)
+ goto invalid;
+
+ if (block_size & 1)
+ bitstream_read_byte(&is);
+
+ e8_status = 1;
+ }
+ }
+
+ /* Postprocess the data unless it cannot possibly contain 0xe8 bytes. */
+ if (e8_status)
+ lzx_postprocess(uncompressed_data, uncompressed_size);
+
+ return 0;
+
+invalid:
+ return -1;
+}
+
+/*
+ * lzx_free_decompressor - Free an LZX decompressor
+ *
+ * @decompressor: A decompressor that was allocated with
+ * lzx_allocate_decompressor(), or NULL.
+ */
+void lzx_free_decompressor(struct lzx_decompressor *decompressor)
+{
+ kfree(decompressor);
+}
diff --git a/fs/ntfs3/lib/xpress_decompress.c b/fs/ntfs3/lib/xpress_decompress.c
new file mode 100644
index 000000000000..3d98f36a981e
--- /dev/null
+++ b/fs/ntfs3/lib/xpress_decompress.c
@@ -0,0 +1,155 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * xpress_decompress.c - A decompressor for the XPRESS compression format
+ * (Huffman variant), which can be used in "System Compressed" files. This is
+ * based on the code from wimlib.
+ *
+ * Copyright (C) 2015 Eric Biggers
+ *
+ * This program is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free Software
+ * Foundation, either version 2 of the License, or (at your option) any later
+ * version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "decompress_common.h"
+#include "lib.h"
+
+#define XPRESS_NUM_SYMBOLS 512
+#define XPRESS_MAX_CODEWORD_LEN 15
+#define XPRESS_MIN_MATCH_LEN 3
+
+/* This value is chosen for fast decompression. */
+#define XPRESS_TABLEBITS 12
+
+/* Reusable heap-allocated memory for XPRESS decompression */
+struct xpress_decompressor {
+
+ /* The Huffman decoding table */
+ u16 decode_table[(1 << XPRESS_TABLEBITS) + 2 * XPRESS_NUM_SYMBOLS];
+
+ /* An array that maps symbols to codeword lengths */
+ u8 lens[XPRESS_NUM_SYMBOLS];
+
+ /* Temporary space for make_huffman_decode_table() */
+ u16 working_space[2 * (1 + XPRESS_MAX_CODEWORD_LEN) +
+ XPRESS_NUM_SYMBOLS];
+};
+
+/*
+ * xpress_allocate_decompressor - Allocate an XPRESS decompressor
+ *
+ * Return the pointer to the decompressor on success, or return NULL and set
+ * errno on failure.
+ */
+struct xpress_decompressor *xpress_allocate_decompressor(void)
+{
+ return kmalloc(sizeof(struct xpress_decompressor), GFP_NOFS);
+}
+
+/*
+ * xpress_decompress - Decompress a buffer of XPRESS-compressed data
+ *
+ * @decompressor: A decompressor that was allocated with
+ * xpress_allocate_decompressor()
+ * @compressed_data: The buffer of data to decompress
+ * @compressed_size: Number of bytes of compressed data
+ * @uncompressed_data: The buffer in which to store the decompressed data
+ * @uncompressed_size: The number of bytes the data decompresses into
+ *
+ * Return 0 on success, or return -1 and set errno on failure.
+ */
+int xpress_decompress(struct xpress_decompressor *decompressor,
+ const void *compressed_data, size_t compressed_size,
+ void *uncompressed_data, size_t uncompressed_size)
+{
+ struct xpress_decompressor *d = decompressor;
+ const u8 * const in_begin = compressed_data;
+ u8 * const out_begin = uncompressed_data;
+ u8 *out_next = out_begin;
+ u8 * const out_end = out_begin + uncompressed_size;
+ struct input_bitstream is;
+ u32 i;
+
+ /* Read the Huffman codeword lengths. */
+ if (compressed_size < XPRESS_NUM_SYMBOLS / 2)
+ goto invalid;
+ for (i = 0; i < XPRESS_NUM_SYMBOLS / 2; i++) {
+ d->lens[i*2 + 0] = in_begin[i] & 0xF;
+ d->lens[i*2 + 1] = in_begin[i] >> 4;
+ }
+
+ /* Build a decoding table for the Huffman code. */
+ if (make_huffman_decode_table(d->decode_table, XPRESS_NUM_SYMBOLS,
+ XPRESS_TABLEBITS, d->lens,
+ XPRESS_MAX_CODEWORD_LEN,
+ d->working_space))
+ goto invalid;
+
+ /* Decode the matches and literals. */
+
+ init_input_bitstream(&is, in_begin + XPRESS_NUM_SYMBOLS / 2,
+ compressed_size - XPRESS_NUM_SYMBOLS / 2);
+
+ while (out_next != out_end) {
+ u32 sym;
+ u32 log2_offset;
+ u32 length;
+ u32 offset;
+
+ sym = read_huffsym(&is, d->decode_table,
+ XPRESS_TABLEBITS, XPRESS_MAX_CODEWORD_LEN);
+ if (sym < 256) {
+ /* Literal */
+ *out_next++ = sym;
+ } else {
+ /* Match */
+ length = sym & 0xf;
+ log2_offset = (sym >> 4) & 0xf;
+
+ bitstream_ensure_bits(&is, 16);
+
+ offset = ((u32)1 << log2_offset) |
+ bitstream_pop_bits(&is, log2_offset);
+
+ if (length == 0xf) {
+ length += bitstream_read_byte(&is);
+ if (length == 0xf + 0xff)
+ length = bitstream_read_u16(&is);
+ }
+ length += XPRESS_MIN_MATCH_LEN;
+
+ if (offset > (size_t)(out_next - out_begin))
+ goto invalid;
+
+ if (length > (size_t)(out_end - out_next))
+ goto invalid;
+
+ out_next = lz_copy(out_next, length, offset, out_end,
+ XPRESS_MIN_MATCH_LEN);
+ }
+ }
+ return 0;
+
+invalid:
+ return -1;
+}
+
+/*
+ * xpress_free_decompressor - Free an XPRESS decompressor
+ *
+ * @decompressor: A decompressor that was allocated with
+ * xpress_allocate_decompressor(), or NULL.
+ */
+void xpress_free_decompressor(struct xpress_decompressor *decompressor)
+{
+ kfree(decompressor);
+}
diff --git a/fs/ntfs3/lznt.c b/fs/ntfs3/lznt.c
new file mode 100644
index 000000000000..ead9ab7d69b3
--- /dev/null
+++ b/fs/ntfs3/lznt.c
@@ -0,0 +1,452 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ *
+ * Copyright (C) 2019-2021 Paragon Software GmbH, All rights reserved.
+ *
+ */
+#include <linux/blkdev.h>
+#include <linux/buffer_head.h>
+#include <linux/fs.h>
+#include <linux/nls.h>
+
+#include "debug.h"
+#include "ntfs.h"
+#include "ntfs_fs.h"
+
+// clang-format off
+/* src buffer is zero */
+#define LZNT_ERROR_ALL_ZEROS 1
+#define LZNT_CHUNK_SIZE 0x1000
+// clang-format on
+
+struct lznt_hash {
+ const u8 *p1;
+ const u8 *p2;
+};
+
+struct lznt {
+ const u8 *unc;
+ const u8 *unc_end;
+ const u8 *best_match;
+ size_t max_len;
+ bool std;
+
+ struct lznt_hash hash[LZNT_CHUNK_SIZE];
+};
+
+static inline size_t get_match_len(const u8 *ptr, const u8 *end, const u8 *prev,
+ size_t max_len)
+{
+ size_t len = 0;
+
+ while (ptr + len < end && ptr[len] == prev[len] && ++len < max_len)
+ ;
+ return len;
+}
+
+static size_t longest_match_std(const u8 *src, struct lznt *ctx)
+{
+ size_t hash_index;
+ size_t len1 = 0, len2 = 0;
+ const u8 **hash;
+
+ hash_index =
+ ((40543U * ((((src[0] << 4) ^ src[1]) << 4) ^ src[2])) >> 4) &
+ (LZNT_CHUNK_SIZE - 1);
+
+ hash = &(ctx->hash[hash_index].p1);
+
+ if (hash[0] >= ctx->unc && hash[0] < src && hash[0][0] == src[0] &&
+ hash[0][1] == src[1] && hash[0][2] == src[2]) {
+ len1 = 3;
+ if (ctx->max_len > 3)
+ len1 += get_match_len(src + 3, ctx->unc_end,
+ hash[0] + 3, ctx->max_len - 3);
+ }
+
+ if (hash[1] >= ctx->unc && hash[1] < src && hash[1][0] == src[0] &&
+ hash[1][1] == src[1] && hash[1][2] == src[2]) {
+ len2 = 3;
+ if (ctx->max_len > 3)
+ len2 += get_match_len(src + 3, ctx->unc_end,
+ hash[1] + 3, ctx->max_len - 3);
+ }
+
+ /* Compare two matches and select the best one */
+ if (len1 < len2) {
+ ctx->best_match = hash[1];
+ len1 = len2;
+ } else {
+ ctx->best_match = hash[0];
+ }
+
+ hash[1] = hash[0];
+ hash[0] = src;
+ return len1;
+}
+
+static size_t longest_match_best(const u8 *src, struct lznt *ctx)
+{
+ size_t max_len;
+ const u8 *ptr;
+
+ if (ctx->unc >= src || !ctx->max_len)
+ return 0;
+
+ max_len = 0;
+ for (ptr = ctx->unc; ptr < src; ++ptr) {
+ size_t len =
+ get_match_len(src, ctx->unc_end, ptr, ctx->max_len);
+ if (len >= max_len) {
+ max_len = len;
+ ctx->best_match = ptr;
+ }
+ }
+
+ return max_len >= 3 ? max_len : 0;
+}
+
+static const size_t s_max_len[] = {
+ 0x1002, 0x802, 0x402, 0x202, 0x102, 0x82, 0x42, 0x22, 0x12,
+};
+
+static const size_t s_max_off[] = {
+ 0x10, 0x20, 0x40, 0x80, 0x100, 0x200, 0x400, 0x800, 0x1000,
+};
+
+static inline u16 make_pair(size_t offset, size_t len, size_t index)
+{
+ return ((offset - 1) << (12 - index)) |
+ ((len - 3) & (((1 << (12 - index)) - 1)));
+}
+
+static inline size_t parse_pair(u16 pair, size_t *offset, size_t index)
+{
+ *offset = 1 + (pair >> (12 - index));
+ return 3 + (pair & ((1 << (12 - index)) - 1));
+}
+
+/*
+ * compress_chunk
+ *
+ * returns one of the three values:
+ * 0 - ok, 'cmpr' contains 'cmpr_chunk_size' bytes of compressed data
+ * 1 - input buffer is full zero
+ * -2 - the compressed buffer is too small to hold the compressed data
+ */
+static inline int compress_chunk(size_t (*match)(const u8 *, struct lznt *),
+ const u8 *unc, const u8 *unc_end, u8 *cmpr,
+ u8 *cmpr_end, size_t *cmpr_chunk_size,
+ struct lznt *ctx)
+{
+ size_t cnt = 0;
+ size_t idx = 0;
+ const u8 *up = unc;
+ u8 *cp = cmpr + 3;
+ u8 *cp2 = cmpr + 2;
+ u8 not_zero = 0;
+ /* Control byte of 8-bit values: ( 0 - means byte as is, 1 - short pair ) */
+ u8 ohdr = 0;
+ u8 *last;
+ u16 t16;
+
+ if (unc + LZNT_CHUNK_SIZE < unc_end)
+ unc_end = unc + LZNT_CHUNK_SIZE;
+
+ last = min(cmpr + LZNT_CHUNK_SIZE + sizeof(short), cmpr_end);
+
+ ctx->unc = unc;
+ ctx->unc_end = unc_end;
+ ctx->max_len = s_max_len[0];
+
+ while (up < unc_end) {
+ size_t max_len;
+
+ while (unc + s_max_off[idx] < up)
+ ctx->max_len = s_max_len[++idx];
+
+ // Find match
+ max_len = up + 3 <= unc_end ? (*match)(up, ctx) : 0;
+
+ if (!max_len) {
+ if (cp >= last)
+ goto NotCompressed;
+ not_zero |= *cp++ = *up++;
+ } else if (cp + 1 >= last) {
+ goto NotCompressed;
+ } else {
+ t16 = make_pair(up - ctx->best_match, max_len, idx);
+ *cp++ = t16;
+ *cp++ = t16 >> 8;
+
+ ohdr |= 1 << cnt;
+ up += max_len;
+ }
+
+ cnt = (cnt + 1) & 7;
+ if (!cnt) {
+ *cp2 = ohdr;
+ ohdr = 0;
+ cp2 = cp;
+ cp += 1;
+ }
+ }
+
+ if (cp2 < last)
+ *cp2 = ohdr;
+ else
+ cp -= 1;
+
+ *cmpr_chunk_size = cp - cmpr;
+
+ t16 = (*cmpr_chunk_size - 3) | 0xB000;
+ cmpr[0] = t16;
+ cmpr[1] = t16 >> 8;
+
+ return not_zero ? 0 : LZNT_ERROR_ALL_ZEROS;
+
+NotCompressed:
+
+ if ((cmpr + LZNT_CHUNK_SIZE + sizeof(short)) > last)
+ return -2;
+
+ /*
+ * Copy non cmpr data
+ * 0x3FFF == ((LZNT_CHUNK_SIZE + 2 - 3) | 0x3000)
+ */
+ cmpr[0] = 0xff;
+ cmpr[1] = 0x3f;
+
+ memcpy(cmpr + sizeof(short), unc, LZNT_CHUNK_SIZE);
+ *cmpr_chunk_size = LZNT_CHUNK_SIZE + sizeof(short);
+
+ return 0;
+}
+
+static inline ssize_t decompress_chunk(u8 *unc, u8 *unc_end, const u8 *cmpr,
+ const u8 *cmpr_end)
+{
+ u8 *up = unc;
+ u8 ch = *cmpr++;
+ size_t bit = 0;
+ size_t index = 0;
+ u16 pair;
+ size_t offset, length;
+
+ /* Do decompression until pointers are inside range */
+ while (up < unc_end && cmpr < cmpr_end) {
+ /* Correct index */
+ while (unc + s_max_off[index] < up)
+ index += 1;
+
+ /* Check the current flag for zero */
+ if (!(ch & (1 << bit))) {
+ /* Just copy byte */
+ *up++ = *cmpr++;
+ goto next;
+ }
+
+ /* Check for boundary */
+ if (cmpr + 1 >= cmpr_end)
+ return -EINVAL;
+
+ /* Read a short from little endian stream */
+ pair = cmpr[1];
+ pair <<= 8;
+ pair |= cmpr[0];
+
+ cmpr += 2;
+
+ /* Translate packed information into offset and length */
+ length = parse_pair(pair, &offset, index);
+
+ /* Check offset for boundary */
+ if (unc + offset > up)
+ return -EINVAL;
+
+ /* Truncate the length if necessary */
+ if (up + length >= unc_end)
+ length = unc_end - up;
+
+ /* Now we copy bytes. This is the heart of LZ algorithm. */
+ for (; length > 0; length--, up++)
+ *up = *(up - offset);
+
+next:
+ /* Advance flag bit value */
+ bit = (bit + 1) & 7;
+
+ if (!bit) {
+ if (cmpr >= cmpr_end)
+ break;
+
+ ch = *cmpr++;
+ }
+ }
+
+ /* return the size of uncompressed data */
+ return up - unc;
+}
+
+/*
+ * 0 - standard compression
+ * !0 - best compression, requires a lot of cpu
+ */
+struct lznt *get_lznt_ctx(int level)
+{
+ struct lznt *r = ntfs_zalloc(level ? offsetof(struct lznt, hash)
+ : sizeof(struct lznt));
+
+ if (r)
+ r->std = !level;
+ return r;
+}
+
+/*
+ * compress_lznt
+ *
+ * Compresses "unc" into "cmpr"
+ * +x - ok, 'cmpr' contains 'final_compressed_size' bytes of compressed data
+ * 0 - input buffer is full zero
+ */
+size_t compress_lznt(const void *unc, size_t unc_size, void *cmpr,
+ size_t cmpr_size, struct lznt *ctx)
+{
+ int err;
+ size_t (*match)(const u8 *src, struct lznt *ctx);
+ u8 *p = cmpr;
+ u8 *end = p + cmpr_size;
+ const u8 *unc_chunk = unc;
+ const u8 *unc_end = unc_chunk + unc_size;
+ bool is_zero = true;
+
+ if (ctx->std) {
+ match = &longest_match_std;
+ memset(ctx->hash, 0, sizeof(ctx->hash));
+ } else {
+ match = &longest_match_best;
+ }
+
+ /* compression cycle */
+ for (; unc_chunk < unc_end; unc_chunk += LZNT_CHUNK_SIZE) {
+ cmpr_size = 0;
+ err = compress_chunk(match, unc_chunk, unc_end, p, end,
+ &cmpr_size, ctx);
+ if (err < 0)
+ return unc_size;
+
+ if (is_zero && err != LZNT_ERROR_ALL_ZEROS)
+ is_zero = false;
+
+ p += cmpr_size;
+ }
+
+ if (p <= end - 2)
+ p[0] = p[1] = 0;
+
+ return is_zero ? 0 : PtrOffset(cmpr, p);
+}
+
+/*
+ * decompress_lznt
+ *
+ * decompresses "cmpr" into "unc"
+ */
+ssize_t decompress_lznt(const void *cmpr, size_t cmpr_size, void *unc,
+ size_t unc_size)
+{
+ const u8 *cmpr_chunk = cmpr;
+ const u8 *cmpr_end = cmpr_chunk + cmpr_size;
+ u8 *unc_chunk = unc;
+ u8 *unc_end = unc_chunk + unc_size;
+ u16 chunk_hdr;
+
+ if (cmpr_size < sizeof(short))
+ return -EINVAL;
+
+ /* read chunk header */
+ chunk_hdr = cmpr_chunk[1];
+ chunk_hdr <<= 8;
+ chunk_hdr |= cmpr_chunk[0];
+
+ /* loop through decompressing chunks */
+ for (;;) {
+ size_t chunk_size_saved;
+ size_t unc_use;
+ size_t cmpr_use = 3 + (chunk_hdr & (LZNT_CHUNK_SIZE - 1));
+
+ /* Check that the chunk actually fits the supplied buffer */
+ if (cmpr_chunk + cmpr_use > cmpr_end)
+ return -EINVAL;
+
+ /* First make sure the chunk contains compressed data */
+ if (chunk_hdr & 0x8000) {
+ /* Decompress a chunk and return if we get an error */
+ ssize_t err =
+ decompress_chunk(unc_chunk, unc_end,
+ cmpr_chunk + sizeof(chunk_hdr),
+ cmpr_chunk + cmpr_use);
+ if (err < 0)
+ return err;
+ unc_use = err;
+ } else {
+ /* This chunk does not contain compressed data */
+ unc_use = unc_chunk + LZNT_CHUNK_SIZE > unc_end
+ ? unc_end - unc_chunk
+ : LZNT_CHUNK_SIZE;
+
+ if (cmpr_chunk + sizeof(chunk_hdr) + unc_use >
+ cmpr_end) {
+ return -EINVAL;
+ }
+
+ memcpy(unc_chunk, cmpr_chunk + sizeof(chunk_hdr),
+ unc_use);
+ }
+
+ /* Advance pointers */
+ cmpr_chunk += cmpr_use;
+ unc_chunk += unc_use;
+
+ /* Check for the end of unc buffer */
+ if (unc_chunk >= unc_end)
+ break;
+
+ /* Proceed the next chunk */
+ if (cmpr_chunk > cmpr_end - 2)
+ break;
+
+ chunk_size_saved = LZNT_CHUNK_SIZE;
+
+ /* read chunk header */
+ chunk_hdr = cmpr_chunk[1];
+ chunk_hdr <<= 8;
+ chunk_hdr |= cmpr_chunk[0];
+
+ if (!chunk_hdr)
+ break;
+
+ /* Check the size of unc buffer */
+ if (unc_use < chunk_size_saved) {
+ size_t t1 = chunk_size_saved - unc_use;
+ u8 *t2 = unc_chunk + t1;
+
+ /* 'Zero' memory */
+ if (t2 >= unc_end)
+ break;
+
+ memset(unc_chunk, 0, t1);
+ unc_chunk = t2;
+ }
+ }
+
+ /* Check compression boundary */
+ if (cmpr_chunk > cmpr_end)
+ return -EINVAL;
+
+ /*
+ * The unc size is just a difference between current
+ * pointer and original one
+ */
+ return PtrOffset(unc, unc_chunk);
+}
--
2.30.0
1
0
From: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
mainline inclusion
from mainline-v5.15-rc1
commit be71b5cba2e6485e8959da7a9f9a44461a1bb074
category: feature
bugzilla:
https://gitee.com/openeuler/kernel/issues/I4G67J?from=project-issue
CVE: NA
----------------------------------------------------------------------
This adds attrib operations
Signed-off-by: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
Signed-off-by: Yin Xiujiang <yinxiujiang(a)kylinos.cn>
---
fs/ntfs3/attrib.c | 2096 +++++++++++++++++++++++++++++++++++++++++++
fs/ntfs3/attrlist.c | 456 ++++++++++
fs/ntfs3/xattr.c | 1128 +++++++++++++++++++++++
3 files changed, 3680 insertions(+)
create mode 100644 fs/ntfs3/attrib.c
create mode 100644 fs/ntfs3/attrlist.c
create mode 100644 fs/ntfs3/xattr.c
diff --git a/fs/ntfs3/attrib.c b/fs/ntfs3/attrib.c
new file mode 100644
index 000000000000..046dc57f75f2
--- /dev/null
+++ b/fs/ntfs3/attrib.c
@@ -0,0 +1,2096 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ *
+ * Copyright (C) 2019-2021 Paragon Software GmbH, All rights reserved.
+ *
+ * TODO: merge attr_set_size/attr_data_get_block/attr_allocate_frame?
+ */
+
+#include <linux/blkdev.h>
+#include <linux/buffer_head.h>
+#include <linux/fs.h>
+#include <linux/hash.h>
+#include <linux/nls.h>
+#include <linux/ratelimit.h>
+#include <linux/slab.h>
+
+#include "debug.h"
+#include "ntfs.h"
+#include "ntfs_fs.h"
+
+/*
+ * You can set external NTFS_MIN_LOG2_OF_CLUMP/NTFS_MAX_LOG2_OF_CLUMP to manage
+ * preallocate algorithm
+ */
+#ifndef NTFS_MIN_LOG2_OF_CLUMP
+#define NTFS_MIN_LOG2_OF_CLUMP 16
+#endif
+
+#ifndef NTFS_MAX_LOG2_OF_CLUMP
+#define NTFS_MAX_LOG2_OF_CLUMP 26
+#endif
+
+// 16M
+#define NTFS_CLUMP_MIN (1 << (NTFS_MIN_LOG2_OF_CLUMP + 8))
+// 16G
+#define NTFS_CLUMP_MAX (1ull << (NTFS_MAX_LOG2_OF_CLUMP + 8))
+
+/*
+ * get_pre_allocated
+ *
+ */
+static inline u64 get_pre_allocated(u64 size)
+{
+ u32 clump;
+ u8 align_shift;
+ u64 ret;
+
+ if (size <= NTFS_CLUMP_MIN) {
+ clump = 1 << NTFS_MIN_LOG2_OF_CLUMP;
+ align_shift = NTFS_MIN_LOG2_OF_CLUMP;
+ } else if (size >= NTFS_CLUMP_MAX) {
+ clump = 1 << NTFS_MAX_LOG2_OF_CLUMP;
+ align_shift = NTFS_MAX_LOG2_OF_CLUMP;
+ } else {
+ align_shift = NTFS_MIN_LOG2_OF_CLUMP - 1 +
+ __ffs(size >> (8 + NTFS_MIN_LOG2_OF_CLUMP));
+ clump = 1u << align_shift;
+ }
+
+ ret = (((size + clump - 1) >> align_shift)) << align_shift;
+
+ return ret;
+}
+
+/*
+ * attr_must_be_resident
+ *
+ * returns true if attribute must be resident
+ */
+static inline bool attr_must_be_resident(struct ntfs_sb_info *sbi,
+ enum ATTR_TYPE type)
+{
+ const struct ATTR_DEF_ENTRY *de;
+
+ switch (type) {
+ case ATTR_STD:
+ case ATTR_NAME:
+ case ATTR_ID:
+ case ATTR_LABEL:
+ case ATTR_VOL_INFO:
+ case ATTR_ROOT:
+ case ATTR_EA_INFO:
+ return true;
+ default:
+ de = ntfs_query_def(sbi, type);
+ if (de && (de->flags & NTFS_ATTR_MUST_BE_RESIDENT))
+ return true;
+ return false;
+ }
+}
+
+/*
+ * attr_load_runs
+ *
+ * load all runs stored in 'attr'
+ */
+int attr_load_runs(struct ATTRIB *attr, struct ntfs_inode *ni,
+ struct runs_tree *run, const CLST *vcn)
+{
+ int err;
+ CLST svcn = le64_to_cpu(attr->nres.svcn);
+ CLST evcn = le64_to_cpu(attr->nres.evcn);
+ u32 asize;
+ u16 run_off;
+
+ if (svcn >= evcn + 1 || run_is_mapped_full(run, svcn, evcn))
+ return 0;
+
+ if (vcn && (evcn < *vcn || *vcn < svcn))
+ return -EINVAL;
+
+ asize = le32_to_cpu(attr->size);
+ run_off = le16_to_cpu(attr->nres.run_off);
+ err = run_unpack_ex(run, ni->mi.sbi, ni->mi.rno, svcn, evcn,
+ vcn ? *vcn : svcn, Add2Ptr(attr, run_off),
+ asize - run_off);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+/*
+ * int run_deallocate_ex
+ *
+ * Deallocate clusters
+ */
+static int run_deallocate_ex(struct ntfs_sb_info *sbi, struct runs_tree *run,
+ CLST vcn, CLST len, CLST *done, bool trim)
+{
+ int err = 0;
+ CLST vcn_next, vcn0 = vcn, lcn, clen, dn = 0;
+ size_t idx;
+
+ if (!len)
+ goto out;
+
+ if (!run_lookup_entry(run, vcn, &lcn, &clen, &idx)) {
+failed:
+ run_truncate(run, vcn0);
+ err = -EINVAL;
+ goto out;
+ }
+
+ for (;;) {
+ if (clen > len)
+ clen = len;
+
+ if (!clen) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ if (lcn != SPARSE_LCN) {
+ mark_as_free_ex(sbi, lcn, clen, trim);
+ dn += clen;
+ }
+
+ len -= clen;
+ if (!len)
+ break;
+
+ vcn_next = vcn + clen;
+ if (!run_get_entry(run, ++idx, &vcn, &lcn, &clen) ||
+ vcn != vcn_next) {
+ // save memory - don't load entire run
+ goto failed;
+ }
+ }
+
+out:
+ if (done)
+ *done += dn;
+
+ return err;
+}
+
+/*
+ * attr_allocate_clusters
+ *
+ * find free space, mark it as used and store in 'run'
+ */
+int attr_allocate_clusters(struct ntfs_sb_info *sbi, struct runs_tree *run,
+ CLST vcn, CLST lcn, CLST len, CLST *pre_alloc,
+ enum ALLOCATE_OPT opt, CLST *alen, const size_t fr,
+ CLST *new_lcn)
+{
+ int err;
+ CLST flen, vcn0 = vcn, pre = pre_alloc ? *pre_alloc : 0;
+ struct wnd_bitmap *wnd = &sbi->used.bitmap;
+ size_t cnt = run->count;
+
+ for (;;) {
+ err = ntfs_look_for_free_space(sbi, lcn, len + pre, &lcn, &flen,
+ opt);
+
+ if (err == -ENOSPC && pre) {
+ pre = 0;
+ if (*pre_alloc)
+ *pre_alloc = 0;
+ continue;
+ }
+
+ if (err)
+ goto out;
+
+ if (new_lcn && vcn == vcn0)
+ *new_lcn = lcn;
+
+ /* Add new fragment into run storage */
+ if (!run_add_entry(run, vcn, lcn, flen, opt == ALLOCATE_MFT)) {
+ down_write_nested(&wnd->rw_lock, BITMAP_MUTEX_CLUSTERS);
+ wnd_set_free(wnd, lcn, flen);
+ up_write(&wnd->rw_lock);
+ err = -ENOMEM;
+ goto out;
+ }
+
+ vcn += flen;
+
+ if (flen >= len || opt == ALLOCATE_MFT ||
+ (fr && run->count - cnt >= fr)) {
+ *alen = vcn - vcn0;
+ return 0;
+ }
+
+ len -= flen;
+ }
+
+out:
+ /* undo */
+ run_deallocate_ex(sbi, run, vcn0, vcn - vcn0, NULL, false);
+ run_truncate(run, vcn0);
+
+ return err;
+}
+
+/*
+ * if page is not NULL - it is already contains resident data
+ * and locked (called from ni_write_frame)
+ */
+int attr_make_nonresident(struct ntfs_inode *ni, struct ATTRIB *attr,
+ struct ATTR_LIST_ENTRY *le, struct mft_inode *mi,
+ u64 new_size, struct runs_tree *run,
+ struct ATTRIB **ins_attr, struct page *page)
+{
+ struct ntfs_sb_info *sbi;
+ struct ATTRIB *attr_s;
+ struct MFT_REC *rec;
+ u32 used, asize, rsize, aoff, align;
+ bool is_data;
+ CLST len, alen;
+ char *next;
+ int err;
+
+ if (attr->non_res) {
+ *ins_attr = attr;
+ return 0;
+ }
+
+ sbi = mi->sbi;
+ rec = mi->mrec;
+ attr_s = NULL;
+ used = le32_to_cpu(rec->used);
+ asize = le32_to_cpu(attr->size);
+ next = Add2Ptr(attr, asize);
+ aoff = PtrOffset(rec, attr);
+ rsize = le32_to_cpu(attr->res.data_size);
+ is_data = attr->type == ATTR_DATA && !attr->name_len;
+
+ align = sbi->cluster_size;
+ if (is_attr_compressed(attr))
+ align <<= COMPRESSION_UNIT;
+ len = (rsize + align - 1) >> sbi->cluster_bits;
+
+ run_init(run);
+
+ /* make a copy of original attribute */
+ attr_s = ntfs_memdup(attr, asize);
+ if (!attr_s) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ if (!len) {
+ /* empty resident -> empty nonresident */
+ alen = 0;
+ } else {
+ const char *data = resident_data(attr);
+
+ err = attr_allocate_clusters(sbi, run, 0, 0, len, NULL,
+ ALLOCATE_DEF, &alen, 0, NULL);
+ if (err)
+ goto out1;
+
+ if (!rsize) {
+ /* empty resident -> non empty nonresident */
+ } else if (!is_data) {
+ err = ntfs_sb_write_run(sbi, run, 0, data, rsize);
+ if (err)
+ goto out2;
+ } else if (!page) {
+ char *kaddr;
+
+ page = grab_cache_page(ni->vfs_inode.i_mapping, 0);
+ if (!page) {
+ err = -ENOMEM;
+ goto out2;
+ }
+ kaddr = kmap_atomic(page);
+ memcpy(kaddr, data, rsize);
+ memset(kaddr + rsize, 0, PAGE_SIZE - rsize);
+ kunmap_atomic(kaddr);
+ flush_dcache_page(page);
+ SetPageUptodate(page);
+ set_page_dirty(page);
+ unlock_page(page);
+ put_page(page);
+ }
+ }
+
+ /* remove original attribute */
+ used -= asize;
+ memmove(attr, Add2Ptr(attr, asize), used - aoff);
+ rec->used = cpu_to_le32(used);
+ mi->dirty = true;
+ if (le)
+ al_remove_le(ni, le);
+
+ err = ni_insert_nonresident(ni, attr_s->type, attr_name(attr_s),
+ attr_s->name_len, run, 0, alen,
+ attr_s->flags, &attr, NULL);
+ if (err)
+ goto out3;
+
+ ntfs_free(attr_s);
+ attr->nres.data_size = cpu_to_le64(rsize);
+ attr->nres.valid_size = attr->nres.data_size;
+
+ *ins_attr = attr;
+
+ if (is_data)
+ ni->ni_flags &= ~NI_FLAG_RESIDENT;
+
+ /* Resident attribute becomes non resident */
+ return 0;
+
+out3:
+ attr = Add2Ptr(rec, aoff);
+ memmove(next, attr, used - aoff);
+ memcpy(attr, attr_s, asize);
+ rec->used = cpu_to_le32(used + asize);
+ mi->dirty = true;
+out2:
+ /* undo: do not trim new allocated clusters */
+ run_deallocate(sbi, run, false);
+ run_close(run);
+out1:
+ ntfs_free(attr_s);
+ /*reinsert le*/
+out:
+ return err;
+}
+
+/*
+ * attr_set_size_res
+ *
+ * helper for attr_set_size
+ */
+static int attr_set_size_res(struct ntfs_inode *ni, struct ATTRIB *attr,
+ struct ATTR_LIST_ENTRY *le, struct mft_inode *mi,
+ u64 new_size, struct runs_tree *run,
+ struct ATTRIB **ins_attr)
+{
+ struct ntfs_sb_info *sbi = mi->sbi;
+ struct MFT_REC *rec = mi->mrec;
+ u32 used = le32_to_cpu(rec->used);
+ u32 asize = le32_to_cpu(attr->size);
+ u32 aoff = PtrOffset(rec, attr);
+ u32 rsize = le32_to_cpu(attr->res.data_size);
+ u32 tail = used - aoff - asize;
+ char *next = Add2Ptr(attr, asize);
+ s64 dsize = QuadAlign(new_size) - QuadAlign(rsize);
+
+ if (dsize < 0) {
+ memmove(next + dsize, next, tail);
+ } else if (dsize > 0) {
+ if (used + dsize > sbi->max_bytes_per_attr)
+ return attr_make_nonresident(ni, attr, le, mi, new_size,
+ run, ins_attr, NULL);
+
+ memmove(next + dsize, next, tail);
+ memset(next, 0, dsize);
+ }
+
+ if (new_size > rsize)
+ memset(Add2Ptr(resident_data(attr), rsize), 0,
+ new_size - rsize);
+
+ rec->used = cpu_to_le32(used + dsize);
+ attr->size = cpu_to_le32(asize + dsize);
+ attr->res.data_size = cpu_to_le32(new_size);
+ mi->dirty = true;
+ *ins_attr = attr;
+
+ return 0;
+}
+
+/*
+ * attr_set_size
+ *
+ * change the size of attribute
+ * Extend:
+ * - sparse/compressed: no allocated clusters
+ * - normal: append allocated and preallocated new clusters
+ * Shrink:
+ * - no deallocate if keep_prealloc is set
+ */
+int attr_set_size(struct ntfs_inode *ni, enum ATTR_TYPE type,
+ const __le16 *name, u8 name_len, struct runs_tree *run,
+ u64 new_size, const u64 *new_valid, bool keep_prealloc,
+ struct ATTRIB **ret)
+{
+ int err = 0;
+ struct ntfs_sb_info *sbi = ni->mi.sbi;
+ u8 cluster_bits = sbi->cluster_bits;
+ bool is_mft =
+ ni->mi.rno == MFT_REC_MFT && type == ATTR_DATA && !name_len;
+ u64 old_valid, old_size, old_alloc, new_alloc, new_alloc_tmp;
+ struct ATTRIB *attr = NULL, *attr_b;
+ struct ATTR_LIST_ENTRY *le, *le_b;
+ struct mft_inode *mi, *mi_b;
+ CLST alen, vcn, lcn, new_alen, old_alen, svcn, evcn;
+ CLST next_svcn, pre_alloc = -1, done = 0;
+ bool is_ext;
+ u32 align;
+ struct MFT_REC *rec;
+
+again:
+ le_b = NULL;
+ attr_b = ni_find_attr(ni, NULL, &le_b, type, name, name_len, NULL,
+ &mi_b);
+ if (!attr_b) {
+ err = -ENOENT;
+ goto out;
+ }
+
+ if (!attr_b->non_res) {
+ err = attr_set_size_res(ni, attr_b, le_b, mi_b, new_size, run,
+ &attr_b);
+ if (err || !attr_b->non_res)
+ goto out;
+
+ /* layout of records may be changed, so do a full search */
+ goto again;
+ }
+
+ is_ext = is_attr_ext(attr_b);
+
+again_1:
+ align = sbi->cluster_size;
+
+ if (is_ext) {
+ align <<= attr_b->nres.c_unit;
+ if (is_attr_sparsed(attr_b))
+ keep_prealloc = false;
+ }
+
+ old_valid = le64_to_cpu(attr_b->nres.valid_size);
+ old_size = le64_to_cpu(attr_b->nres.data_size);
+ old_alloc = le64_to_cpu(attr_b->nres.alloc_size);
+ old_alen = old_alloc >> cluster_bits;
+
+ new_alloc = (new_size + align - 1) & ~(u64)(align - 1);
+ new_alen = new_alloc >> cluster_bits;
+
+ if (keep_prealloc && is_ext)
+ keep_prealloc = false;
+
+ if (keep_prealloc && new_size < old_size) {
+ attr_b->nres.data_size = cpu_to_le64(new_size);
+ mi_b->dirty = true;
+ goto ok;
+ }
+
+ vcn = old_alen - 1;
+
+ svcn = le64_to_cpu(attr_b->nres.svcn);
+ evcn = le64_to_cpu(attr_b->nres.evcn);
+
+ if (svcn <= vcn && vcn <= evcn) {
+ attr = attr_b;
+ le = le_b;
+ mi = mi_b;
+ } else if (!le_b) {
+ err = -EINVAL;
+ goto out;
+ } else {
+ le = le_b;
+ attr = ni_find_attr(ni, attr_b, &le, type, name, name_len, &vcn,
+ &mi);
+ if (!attr) {
+ err = -EINVAL;
+ goto out;
+ }
+
+next_le_1:
+ svcn = le64_to_cpu(attr->nres.svcn);
+ evcn = le64_to_cpu(attr->nres.evcn);
+ }
+
+next_le:
+ rec = mi->mrec;
+
+ err = attr_load_runs(attr, ni, run, NULL);
+ if (err)
+ goto out;
+
+ if (new_size > old_size) {
+ CLST to_allocate;
+ size_t free;
+
+ if (new_alloc <= old_alloc) {
+ attr_b->nres.data_size = cpu_to_le64(new_size);
+ mi_b->dirty = true;
+ goto ok;
+ }
+
+ to_allocate = new_alen - old_alen;
+add_alloc_in_same_attr_seg:
+ lcn = 0;
+ if (is_mft) {
+ /* mft allocates clusters from mftzone */
+ pre_alloc = 0;
+ } else if (is_ext) {
+ /* no preallocate for sparse/compress */
+ pre_alloc = 0;
+ } else if (pre_alloc == -1) {
+ pre_alloc = 0;
+ if (type == ATTR_DATA && !name_len &&
+ sbi->options.prealloc) {
+ CLST new_alen2 = bytes_to_cluster(
+ sbi, get_pre_allocated(new_size));
+ pre_alloc = new_alen2 - new_alen;
+ }
+
+ /* Get the last lcn to allocate from */
+ if (old_alen &&
+ !run_lookup_entry(run, vcn, &lcn, NULL, NULL)) {
+ lcn = SPARSE_LCN;
+ }
+
+ if (lcn == SPARSE_LCN)
+ lcn = 0;
+ else if (lcn)
+ lcn += 1;
+
+ free = wnd_zeroes(&sbi->used.bitmap);
+ if (to_allocate > free) {
+ err = -ENOSPC;
+ goto out;
+ }
+
+ if (pre_alloc && to_allocate + pre_alloc > free)
+ pre_alloc = 0;
+ }
+
+ vcn = old_alen;
+
+ if (is_ext) {
+ if (!run_add_entry(run, vcn, SPARSE_LCN, to_allocate,
+ false)) {
+ err = -ENOMEM;
+ goto out;
+ }
+ alen = to_allocate;
+ } else {
+ /* ~3 bytes per fragment */
+ err = attr_allocate_clusters(
+ sbi, run, vcn, lcn, to_allocate, &pre_alloc,
+ is_mft ? ALLOCATE_MFT : 0, &alen,
+ is_mft ? 0
+ : (sbi->record_size -
+ le32_to_cpu(rec->used) + 8) /
+ 3 +
+ 1,
+ NULL);
+ if (err)
+ goto out;
+ }
+
+ done += alen;
+ vcn += alen;
+ if (to_allocate > alen)
+ to_allocate -= alen;
+ else
+ to_allocate = 0;
+
+pack_runs:
+ err = mi_pack_runs(mi, attr, run, vcn - svcn);
+ if (err)
+ goto out;
+
+ next_svcn = le64_to_cpu(attr->nres.evcn) + 1;
+ new_alloc_tmp = (u64)next_svcn << cluster_bits;
+ attr_b->nres.alloc_size = cpu_to_le64(new_alloc_tmp);
+ mi_b->dirty = true;
+
+ if (next_svcn >= vcn && !to_allocate) {
+ /* Normal way. update attribute and exit */
+ attr_b->nres.data_size = cpu_to_le64(new_size);
+ goto ok;
+ }
+
+ /* at least two mft to avoid recursive loop*/
+ if (is_mft && next_svcn == vcn &&
+ ((u64)done << sbi->cluster_bits) >= 2 * sbi->record_size) {
+ new_size = new_alloc_tmp;
+ attr_b->nres.data_size = attr_b->nres.alloc_size;
+ goto ok;
+ }
+
+ if (le32_to_cpu(rec->used) < sbi->record_size) {
+ old_alen = next_svcn;
+ evcn = old_alen - 1;
+ goto add_alloc_in_same_attr_seg;
+ }
+
+ attr_b->nres.data_size = attr_b->nres.alloc_size;
+ if (new_alloc_tmp < old_valid)
+ attr_b->nres.valid_size = attr_b->nres.data_size;
+
+ if (type == ATTR_LIST) {
+ err = ni_expand_list(ni);
+ if (err)
+ goto out;
+ if (next_svcn < vcn)
+ goto pack_runs;
+
+ /* layout of records is changed */
+ goto again;
+ }
+
+ if (!ni->attr_list.size) {
+ err = ni_create_attr_list(ni);
+ if (err)
+ goto out;
+ /* layout of records is changed */
+ }
+
+ if (next_svcn >= vcn) {
+ /* this is mft data, repeat */
+ goto again;
+ }
+
+ /* insert new attribute segment */
+ err = ni_insert_nonresident(ni, type, name, name_len, run,
+ next_svcn, vcn - next_svcn,
+ attr_b->flags, &attr, &mi);
+ if (err)
+ goto out;
+
+ if (!is_mft)
+ run_truncate_head(run, evcn + 1);
+
+ svcn = le64_to_cpu(attr->nres.svcn);
+ evcn = le64_to_cpu(attr->nres.evcn);
+
+ le_b = NULL;
+ /* layout of records maybe changed */
+ /* find base attribute to update*/
+ attr_b = ni_find_attr(ni, NULL, &le_b, type, name, name_len,
+ NULL, &mi_b);
+ if (!attr_b) {
+ err = -ENOENT;
+ goto out;
+ }
+
+ attr_b->nres.alloc_size = cpu_to_le64((u64)vcn << cluster_bits);
+ attr_b->nres.data_size = attr_b->nres.alloc_size;
+ attr_b->nres.valid_size = attr_b->nres.alloc_size;
+ mi_b->dirty = true;
+ goto again_1;
+ }
+
+ if (new_size != old_size ||
+ (new_alloc != old_alloc && !keep_prealloc)) {
+ vcn = max(svcn, new_alen);
+ new_alloc_tmp = (u64)vcn << cluster_bits;
+
+ alen = 0;
+ err = run_deallocate_ex(sbi, run, vcn, evcn - vcn + 1, &alen,
+ true);
+ if (err)
+ goto out;
+
+ run_truncate(run, vcn);
+
+ if (vcn > svcn) {
+ err = mi_pack_runs(mi, attr, run, vcn - svcn);
+ if (err)
+ goto out;
+ } else if (le && le->vcn) {
+ u16 le_sz = le16_to_cpu(le->size);
+
+ /*
+ * NOTE: list entries for one attribute are always
+ * the same size. We deal with last entry (vcn==0)
+ * and it is not first in entries array
+ * (list entry for std attribute always first)
+ * So it is safe to step back
+ */
+ mi_remove_attr(mi, attr);
+
+ if (!al_remove_le(ni, le)) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ le = (struct ATTR_LIST_ENTRY *)((u8 *)le - le_sz);
+ } else {
+ attr->nres.evcn = cpu_to_le64((u64)vcn - 1);
+ mi->dirty = true;
+ }
+
+ attr_b->nres.alloc_size = cpu_to_le64(new_alloc_tmp);
+
+ if (vcn == new_alen) {
+ attr_b->nres.data_size = cpu_to_le64(new_size);
+ if (new_size < old_valid)
+ attr_b->nres.valid_size =
+ attr_b->nres.data_size;
+ } else {
+ if (new_alloc_tmp <=
+ le64_to_cpu(attr_b->nres.data_size))
+ attr_b->nres.data_size =
+ attr_b->nres.alloc_size;
+ if (new_alloc_tmp <
+ le64_to_cpu(attr_b->nres.valid_size))
+ attr_b->nres.valid_size =
+ attr_b->nres.alloc_size;
+ }
+
+ if (is_ext)
+ le64_sub_cpu(&attr_b->nres.total_size,
+ ((u64)alen << cluster_bits));
+
+ mi_b->dirty = true;
+
+ if (new_alloc_tmp <= new_alloc)
+ goto ok;
+
+ old_size = new_alloc_tmp;
+ vcn = svcn - 1;
+
+ if (le == le_b) {
+ attr = attr_b;
+ mi = mi_b;
+ evcn = svcn - 1;
+ svcn = 0;
+ goto next_le;
+ }
+
+ if (le->type != type || le->name_len != name_len ||
+ memcmp(le_name(le), name, name_len * sizeof(short))) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ err = ni_load_mi(ni, le, &mi);
+ if (err)
+ goto out;
+
+ attr = mi_find_attr(mi, NULL, type, name, name_len, &le->id);
+ if (!attr) {
+ err = -EINVAL;
+ goto out;
+ }
+ goto next_le_1;
+ }
+
+ok:
+ if (new_valid) {
+ __le64 valid = cpu_to_le64(min(*new_valid, new_size));
+
+ if (attr_b->nres.valid_size != valid) {
+ attr_b->nres.valid_size = valid;
+ mi_b->dirty = true;
+ }
+ }
+
+out:
+ if (!err && attr_b && ret)
+ *ret = attr_b;
+
+ /* update inode_set_bytes*/
+ if (!err && ((type == ATTR_DATA && !name_len) ||
+ (type == ATTR_ALLOC && name == I30_NAME))) {
+ bool dirty = false;
+
+ if (ni->vfs_inode.i_size != new_size) {
+ ni->vfs_inode.i_size = new_size;
+ dirty = true;
+ }
+
+ if (attr_b && attr_b->non_res) {
+ new_alloc = le64_to_cpu(attr_b->nres.alloc_size);
+ if (inode_get_bytes(&ni->vfs_inode) != new_alloc) {
+ inode_set_bytes(&ni->vfs_inode, new_alloc);
+ dirty = true;
+ }
+ }
+
+ if (dirty) {
+ ni->ni_flags |= NI_FLAG_UPDATE_PARENT;
+ mark_inode_dirty(&ni->vfs_inode);
+ }
+ }
+
+ return err;
+}
+
+int attr_data_get_block(struct ntfs_inode *ni, CLST vcn, CLST clen, CLST *lcn,
+ CLST *len, bool *new)
+{
+ int err = 0;
+ struct runs_tree *run = &ni->file.run;
+ struct ntfs_sb_info *sbi;
+ u8 cluster_bits;
+ struct ATTRIB *attr = NULL, *attr_b;
+ struct ATTR_LIST_ENTRY *le, *le_b;
+ struct mft_inode *mi, *mi_b;
+ CLST hint, svcn, to_alloc, evcn1, next_svcn, asize, end;
+ u64 total_size;
+ u32 clst_per_frame;
+ bool ok;
+
+ if (new)
+ *new = false;
+
+ down_read(&ni->file.run_lock);
+ ok = run_lookup_entry(run, vcn, lcn, len, NULL);
+ up_read(&ni->file.run_lock);
+
+ if (ok && (*lcn != SPARSE_LCN || !new)) {
+ /* normal way */
+ return 0;
+ }
+
+ if (!clen)
+ clen = 1;
+
+ if (ok && clen > *len)
+ clen = *len;
+
+ sbi = ni->mi.sbi;
+ cluster_bits = sbi->cluster_bits;
+
+ ni_lock(ni);
+ down_write(&ni->file.run_lock);
+
+ le_b = NULL;
+ attr_b = ni_find_attr(ni, NULL, &le_b, ATTR_DATA, NULL, 0, NULL, &mi_b);
+ if (!attr_b) {
+ err = -ENOENT;
+ goto out;
+ }
+
+ if (!attr_b->non_res) {
+ *lcn = RESIDENT_LCN;
+ *len = 1;
+ goto out;
+ }
+
+ asize = le64_to_cpu(attr_b->nres.alloc_size) >> sbi->cluster_bits;
+ if (vcn >= asize) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ clst_per_frame = 1u << attr_b->nres.c_unit;
+ to_alloc = (clen + clst_per_frame - 1) & ~(clst_per_frame - 1);
+
+ if (vcn + to_alloc > asize)
+ to_alloc = asize - vcn;
+
+ svcn = le64_to_cpu(attr_b->nres.svcn);
+ evcn1 = le64_to_cpu(attr_b->nres.evcn) + 1;
+
+ attr = attr_b;
+ le = le_b;
+ mi = mi_b;
+
+ if (le_b && (vcn < svcn || evcn1 <= vcn)) {
+ attr = ni_find_attr(ni, attr_b, &le, ATTR_DATA, NULL, 0, &vcn,
+ &mi);
+ if (!attr) {
+ err = -EINVAL;
+ goto out;
+ }
+ svcn = le64_to_cpu(attr->nres.svcn);
+ evcn1 = le64_to_cpu(attr->nres.evcn) + 1;
+ }
+
+ err = attr_load_runs(attr, ni, run, NULL);
+ if (err)
+ goto out;
+
+ if (!ok) {
+ ok = run_lookup_entry(run, vcn, lcn, len, NULL);
+ if (ok && (*lcn != SPARSE_LCN || !new)) {
+ /* normal way */
+ err = 0;
+ goto ok;
+ }
+
+ if (!ok && !new) {
+ *len = 0;
+ err = 0;
+ goto ok;
+ }
+
+ if (ok && clen > *len) {
+ clen = *len;
+ to_alloc = (clen + clst_per_frame - 1) &
+ ~(clst_per_frame - 1);
+ }
+ }
+
+ if (!is_attr_ext(attr_b)) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ /* Get the last lcn to allocate from */
+ hint = 0;
+
+ if (vcn > evcn1) {
+ if (!run_add_entry(run, evcn1, SPARSE_LCN, vcn - evcn1,
+ false)) {
+ err = -ENOMEM;
+ goto out;
+ }
+ } else if (vcn && !run_lookup_entry(run, vcn - 1, &hint, NULL, NULL)) {
+ hint = -1;
+ }
+
+ err = attr_allocate_clusters(
+ sbi, run, vcn, hint + 1, to_alloc, NULL, 0, len,
+ (sbi->record_size - le32_to_cpu(mi->mrec->used) + 8) / 3 + 1,
+ lcn);
+ if (err)
+ goto out;
+ *new = true;
+
+ end = vcn + *len;
+
+ total_size = le64_to_cpu(attr_b->nres.total_size) +
+ ((u64)*len << cluster_bits);
+
+repack:
+ err = mi_pack_runs(mi, attr, run, max(end, evcn1) - svcn);
+ if (err)
+ goto out;
+
+ attr_b->nres.total_size = cpu_to_le64(total_size);
+ inode_set_bytes(&ni->vfs_inode, total_size);
+ ni->ni_flags |= NI_FLAG_UPDATE_PARENT;
+
+ mi_b->dirty = true;
+ mark_inode_dirty(&ni->vfs_inode);
+
+ /* stored [vcn : next_svcn) from [vcn : end) */
+ next_svcn = le64_to_cpu(attr->nres.evcn) + 1;
+
+ if (end <= evcn1) {
+ if (next_svcn == evcn1) {
+ /* Normal way. update attribute and exit */
+ goto ok;
+ }
+ /* add new segment [next_svcn : evcn1 - next_svcn )*/
+ if (!ni->attr_list.size) {
+ err = ni_create_attr_list(ni);
+ if (err)
+ goto out;
+ /* layout of records is changed */
+ le_b = NULL;
+ attr_b = ni_find_attr(ni, NULL, &le_b, ATTR_DATA, NULL,
+ 0, NULL, &mi_b);
+ if (!attr_b) {
+ err = -ENOENT;
+ goto out;
+ }
+
+ attr = attr_b;
+ le = le_b;
+ mi = mi_b;
+ goto repack;
+ }
+ }
+
+ svcn = evcn1;
+
+ /* Estimate next attribute */
+ attr = ni_find_attr(ni, attr, &le, ATTR_DATA, NULL, 0, &svcn, &mi);
+
+ if (attr) {
+ CLST alloc = bytes_to_cluster(
+ sbi, le64_to_cpu(attr_b->nres.alloc_size));
+ CLST evcn = le64_to_cpu(attr->nres.evcn);
+
+ if (end < next_svcn)
+ end = next_svcn;
+ while (end > evcn) {
+ /* remove segment [svcn : evcn)*/
+ mi_remove_attr(mi, attr);
+
+ if (!al_remove_le(ni, le)) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ if (evcn + 1 >= alloc) {
+ /* last attribute segment */
+ evcn1 = evcn + 1;
+ goto ins_ext;
+ }
+
+ if (ni_load_mi(ni, le, &mi)) {
+ attr = NULL;
+ goto out;
+ }
+
+ attr = mi_find_attr(mi, NULL, ATTR_DATA, NULL, 0,
+ &le->id);
+ if (!attr) {
+ err = -EINVAL;
+ goto out;
+ }
+ svcn = le64_to_cpu(attr->nres.svcn);
+ evcn = le64_to_cpu(attr->nres.evcn);
+ }
+
+ if (end < svcn)
+ end = svcn;
+
+ err = attr_load_runs(attr, ni, run, &end);
+ if (err)
+ goto out;
+
+ evcn1 = evcn + 1;
+ attr->nres.svcn = cpu_to_le64(next_svcn);
+ err = mi_pack_runs(mi, attr, run, evcn1 - next_svcn);
+ if (err)
+ goto out;
+
+ le->vcn = cpu_to_le64(next_svcn);
+ ni->attr_list.dirty = true;
+ mi->dirty = true;
+
+ next_svcn = le64_to_cpu(attr->nres.evcn) + 1;
+ }
+ins_ext:
+ if (evcn1 > next_svcn) {
+ err = ni_insert_nonresident(ni, ATTR_DATA, NULL, 0, run,
+ next_svcn, evcn1 - next_svcn,
+ attr_b->flags, &attr, &mi);
+ if (err)
+ goto out;
+ }
+ok:
+ run_truncate_around(run, vcn);
+out:
+ up_write(&ni->file.run_lock);
+ ni_unlock(ni);
+
+ return err;
+}
+
+int attr_data_read_resident(struct ntfs_inode *ni, struct page *page)
+{
+ u64 vbo;
+ struct ATTRIB *attr;
+ u32 data_size;
+
+ attr = ni_find_attr(ni, NULL, NULL, ATTR_DATA, NULL, 0, NULL, NULL);
+ if (!attr)
+ return -EINVAL;
+
+ if (attr->non_res)
+ return E_NTFS_NONRESIDENT;
+
+ vbo = page->index << PAGE_SHIFT;
+ data_size = le32_to_cpu(attr->res.data_size);
+ if (vbo < data_size) {
+ const char *data = resident_data(attr);
+ char *kaddr = kmap_atomic(page);
+ u32 use = data_size - vbo;
+
+ if (use > PAGE_SIZE)
+ use = PAGE_SIZE;
+
+ memcpy(kaddr, data + vbo, use);
+ memset(kaddr + use, 0, PAGE_SIZE - use);
+ kunmap_atomic(kaddr);
+ flush_dcache_page(page);
+ SetPageUptodate(page);
+ } else if (!PageUptodate(page)) {
+ zero_user_segment(page, 0, PAGE_SIZE);
+ SetPageUptodate(page);
+ }
+
+ return 0;
+}
+
+int attr_data_write_resident(struct ntfs_inode *ni, struct page *page)
+{
+ u64 vbo;
+ struct mft_inode *mi;
+ struct ATTRIB *attr;
+ u32 data_size;
+
+ attr = ni_find_attr(ni, NULL, NULL, ATTR_DATA, NULL, 0, NULL, &mi);
+ if (!attr)
+ return -EINVAL;
+
+ if (attr->non_res) {
+ /*return special error code to check this case*/
+ return E_NTFS_NONRESIDENT;
+ }
+
+ vbo = page->index << PAGE_SHIFT;
+ data_size = le32_to_cpu(attr->res.data_size);
+ if (vbo < data_size) {
+ char *data = resident_data(attr);
+ char *kaddr = kmap_atomic(page);
+ u32 use = data_size - vbo;
+
+ if (use > PAGE_SIZE)
+ use = PAGE_SIZE;
+ memcpy(data + vbo, kaddr, use);
+ kunmap_atomic(kaddr);
+ mi->dirty = true;
+ }
+ ni->i_valid = data_size;
+
+ return 0;
+}
+
+/*
+ * attr_load_runs_vcn
+ *
+ * load runs with vcn
+ */
+int attr_load_runs_vcn(struct ntfs_inode *ni, enum ATTR_TYPE type,
+ const __le16 *name, u8 name_len, struct runs_tree *run,
+ CLST vcn)
+{
+ struct ATTRIB *attr;
+ int err;
+ CLST svcn, evcn;
+ u16 ro;
+
+ attr = ni_find_attr(ni, NULL, NULL, type, name, name_len, &vcn, NULL);
+ if (!attr)
+ return -ENOENT;
+
+ svcn = le64_to_cpu(attr->nres.svcn);
+ evcn = le64_to_cpu(attr->nres.evcn);
+
+ if (evcn < vcn || vcn < svcn)
+ return -EINVAL;
+
+ ro = le16_to_cpu(attr->nres.run_off);
+ err = run_unpack_ex(run, ni->mi.sbi, ni->mi.rno, svcn, evcn, svcn,
+ Add2Ptr(attr, ro), le32_to_cpu(attr->size) - ro);
+ if (err < 0)
+ return err;
+ return 0;
+}
+
+/*
+ * load runs for given range [from to)
+ */
+int attr_load_runs_range(struct ntfs_inode *ni, enum ATTR_TYPE type,
+ const __le16 *name, u8 name_len, struct runs_tree *run,
+ u64 from, u64 to)
+{
+ struct ntfs_sb_info *sbi = ni->mi.sbi;
+ u8 cluster_bits = sbi->cluster_bits;
+ CLST vcn = from >> cluster_bits;
+ CLST vcn_last = (to - 1) >> cluster_bits;
+ CLST lcn, clen;
+ int err;
+
+ for (vcn = from >> cluster_bits; vcn <= vcn_last; vcn += clen) {
+ if (!run_lookup_entry(run, vcn, &lcn, &clen, NULL)) {
+ err = attr_load_runs_vcn(ni, type, name, name_len, run,
+ vcn);
+ if (err)
+ return err;
+ clen = 0; /*next run_lookup_entry(vcn) must be success*/
+ }
+ }
+
+ return 0;
+}
+
+#ifdef CONFIG_NTFS3_LZX_XPRESS
+/*
+ * attr_wof_frame_info
+ *
+ * read header of xpress/lzx file to get info about frame
+ */
+int attr_wof_frame_info(struct ntfs_inode *ni, struct ATTRIB *attr,
+ struct runs_tree *run, u64 frame, u64 frames,
+ u8 frame_bits, u32 *ondisk_size, u64 *vbo_data)
+{
+ struct ntfs_sb_info *sbi = ni->mi.sbi;
+ u64 vbo[2], off[2], wof_size;
+ u32 voff;
+ u8 bytes_per_off;
+ char *addr;
+ struct page *page;
+ int i, err;
+ __le32 *off32;
+ __le64 *off64;
+
+ if (ni->vfs_inode.i_size < 0x100000000ull) {
+ /* file starts with array of 32 bit offsets */
+ bytes_per_off = sizeof(__le32);
+ vbo[1] = frame << 2;
+ *vbo_data = frames << 2;
+ } else {
+ /* file starts with array of 64 bit offsets */
+ bytes_per_off = sizeof(__le64);
+ vbo[1] = frame << 3;
+ *vbo_data = frames << 3;
+ }
+
+ /*
+ * read 4/8 bytes at [vbo - 4(8)] == offset where compressed frame starts
+ * read 4/8 bytes at [vbo] == offset where compressed frame ends
+ */
+ if (!attr->non_res) {
+ if (vbo[1] + bytes_per_off > le32_to_cpu(attr->res.data_size)) {
+ ntfs_inode_err(&ni->vfs_inode, "is corrupted");
+ return -EINVAL;
+ }
+ addr = resident_data(attr);
+
+ if (bytes_per_off == sizeof(__le32)) {
+ off32 = Add2Ptr(addr, vbo[1]);
+ off[0] = vbo[1] ? le32_to_cpu(off32[-1]) : 0;
+ off[1] = le32_to_cpu(off32[0]);
+ } else {
+ off64 = Add2Ptr(addr, vbo[1]);
+ off[0] = vbo[1] ? le64_to_cpu(off64[-1]) : 0;
+ off[1] = le64_to_cpu(off64[0]);
+ }
+
+ *vbo_data += off[0];
+ *ondisk_size = off[1] - off[0];
+ return 0;
+ }
+
+ wof_size = le64_to_cpu(attr->nres.data_size);
+ down_write(&ni->file.run_lock);
+ page = ni->file.offs_page;
+ if (!page) {
+ page = alloc_page(GFP_KERNEL);
+ if (!page) {
+ err = -ENOMEM;
+ goto out;
+ }
+ page->index = -1;
+ ni->file.offs_page = page;
+ }
+ lock_page(page);
+ addr = page_address(page);
+
+ if (vbo[1]) {
+ voff = vbo[1] & (PAGE_SIZE - 1);
+ vbo[0] = vbo[1] - bytes_per_off;
+ i = 0;
+ } else {
+ voff = 0;
+ vbo[0] = 0;
+ off[0] = 0;
+ i = 1;
+ }
+
+ do {
+ pgoff_t index = vbo[i] >> PAGE_SHIFT;
+
+ if (index != page->index) {
+ u64 from = vbo[i] & ~(u64)(PAGE_SIZE - 1);
+ u64 to = min(from + PAGE_SIZE, wof_size);
+
+ err = attr_load_runs_range(ni, ATTR_DATA, WOF_NAME,
+ ARRAY_SIZE(WOF_NAME), run,
+ from, to);
+ if (err)
+ goto out1;
+
+ err = ntfs_bio_pages(sbi, run, &page, 1, from,
+ to - from, REQ_OP_READ);
+ if (err) {
+ page->index = -1;
+ goto out1;
+ }
+ page->index = index;
+ }
+
+ if (i) {
+ if (bytes_per_off == sizeof(__le32)) {
+ off32 = Add2Ptr(addr, voff);
+ off[1] = le32_to_cpu(*off32);
+ } else {
+ off64 = Add2Ptr(addr, voff);
+ off[1] = le64_to_cpu(*off64);
+ }
+ } else if (!voff) {
+ if (bytes_per_off == sizeof(__le32)) {
+ off32 = Add2Ptr(addr, PAGE_SIZE - sizeof(u32));
+ off[0] = le32_to_cpu(*off32);
+ } else {
+ off64 = Add2Ptr(addr, PAGE_SIZE - sizeof(u64));
+ off[0] = le64_to_cpu(*off64);
+ }
+ } else {
+ /* two values in one page*/
+ if (bytes_per_off == sizeof(__le32)) {
+ off32 = Add2Ptr(addr, voff);
+ off[0] = le32_to_cpu(off32[-1]);
+ off[1] = le32_to_cpu(off32[0]);
+ } else {
+ off64 = Add2Ptr(addr, voff);
+ off[0] = le64_to_cpu(off64[-1]);
+ off[1] = le64_to_cpu(off64[0]);
+ }
+ break;
+ }
+ } while (++i < 2);
+
+ *vbo_data += off[0];
+ *ondisk_size = off[1] - off[0];
+
+out1:
+ unlock_page(page);
+out:
+ up_write(&ni->file.run_lock);
+ return err;
+}
+#endif
+
+/*
+ * attr_is_frame_compressed
+ *
+ * This function is used to detect compressed frame
+ */
+int attr_is_frame_compressed(struct ntfs_inode *ni, struct ATTRIB *attr,
+ CLST frame, CLST *clst_data)
+{
+ int err;
+ u32 clst_frame;
+ CLST clen, lcn, vcn, alen, slen, vcn_next;
+ size_t idx;
+ struct runs_tree *run;
+
+ *clst_data = 0;
+
+ if (!is_attr_compressed(attr))
+ return 0;
+
+ if (!attr->non_res)
+ return 0;
+
+ clst_frame = 1u << attr->nres.c_unit;
+ vcn = frame * clst_frame;
+ run = &ni->file.run;
+
+ if (!run_lookup_entry(run, vcn, &lcn, &clen, &idx)) {
+ err = attr_load_runs_vcn(ni, attr->type, attr_name(attr),
+ attr->name_len, run, vcn);
+ if (err)
+ return err;
+
+ if (!run_lookup_entry(run, vcn, &lcn, &clen, &idx))
+ return -EINVAL;
+ }
+
+ if (lcn == SPARSE_LCN) {
+ /* sparsed frame */
+ return 0;
+ }
+
+ if (clen >= clst_frame) {
+ /*
+ * The frame is not compressed 'cause
+ * it does not contain any sparse clusters
+ */
+ *clst_data = clst_frame;
+ return 0;
+ }
+
+ alen = bytes_to_cluster(ni->mi.sbi, le64_to_cpu(attr->nres.alloc_size));
+ slen = 0;
+ *clst_data = clen;
+
+ /*
+ * The frame is compressed if *clst_data + slen >= clst_frame
+ * Check next fragments
+ */
+ while ((vcn += clen) < alen) {
+ vcn_next = vcn;
+
+ if (!run_get_entry(run, ++idx, &vcn, &lcn, &clen) ||
+ vcn_next != vcn) {
+ err = attr_load_runs_vcn(ni, attr->type,
+ attr_name(attr),
+ attr->name_len, run, vcn_next);
+ if (err)
+ return err;
+ vcn = vcn_next;
+
+ if (!run_lookup_entry(run, vcn, &lcn, &clen, &idx))
+ return -EINVAL;
+ }
+
+ if (lcn == SPARSE_LCN) {
+ slen += clen;
+ } else {
+ if (slen) {
+ /*
+ * data_clusters + sparse_clusters =
+ * not enough for frame
+ */
+ return -EINVAL;
+ }
+ *clst_data += clen;
+ }
+
+ if (*clst_data + slen >= clst_frame) {
+ if (!slen) {
+ /*
+ * There is no sparsed clusters in this frame
+ * So it is not compressed
+ */
+ *clst_data = clst_frame;
+ } else {
+ /*frame is compressed*/
+ }
+ break;
+ }
+ }
+
+ return 0;
+}
+
+/*
+ * attr_allocate_frame
+ *
+ * allocate/free clusters for 'frame'
+ * assumed: down_write(&ni->file.run_lock);
+ */
+int attr_allocate_frame(struct ntfs_inode *ni, CLST frame, size_t compr_size,
+ u64 new_valid)
+{
+ int err = 0;
+ struct runs_tree *run = &ni->file.run;
+ struct ntfs_sb_info *sbi = ni->mi.sbi;
+ struct ATTRIB *attr = NULL, *attr_b;
+ struct ATTR_LIST_ENTRY *le, *le_b;
+ struct mft_inode *mi, *mi_b;
+ CLST svcn, evcn1, next_svcn, lcn, len;
+ CLST vcn, end, clst_data;
+ u64 total_size, valid_size, data_size;
+
+ le_b = NULL;
+ attr_b = ni_find_attr(ni, NULL, &le_b, ATTR_DATA, NULL, 0, NULL, &mi_b);
+ if (!attr_b)
+ return -ENOENT;
+
+ if (!is_attr_ext(attr_b))
+ return -EINVAL;
+
+ vcn = frame << NTFS_LZNT_CUNIT;
+ total_size = le64_to_cpu(attr_b->nres.total_size);
+
+ svcn = le64_to_cpu(attr_b->nres.svcn);
+ evcn1 = le64_to_cpu(attr_b->nres.evcn) + 1;
+ data_size = le64_to_cpu(attr_b->nres.data_size);
+
+ if (svcn <= vcn && vcn < evcn1) {
+ attr = attr_b;
+ le = le_b;
+ mi = mi_b;
+ } else if (!le_b) {
+ err = -EINVAL;
+ goto out;
+ } else {
+ le = le_b;
+ attr = ni_find_attr(ni, attr_b, &le, ATTR_DATA, NULL, 0, &vcn,
+ &mi);
+ if (!attr) {
+ err = -EINVAL;
+ goto out;
+ }
+ svcn = le64_to_cpu(attr->nres.svcn);
+ evcn1 = le64_to_cpu(attr->nres.evcn) + 1;
+ }
+
+ err = attr_load_runs(attr, ni, run, NULL);
+ if (err)
+ goto out;
+
+ err = attr_is_frame_compressed(ni, attr_b, frame, &clst_data);
+ if (err)
+ goto out;
+
+ total_size -= (u64)clst_data << sbi->cluster_bits;
+
+ len = bytes_to_cluster(sbi, compr_size);
+
+ if (len == clst_data)
+ goto out;
+
+ if (len < clst_data) {
+ err = run_deallocate_ex(sbi, run, vcn + len, clst_data - len,
+ NULL, true);
+ if (err)
+ goto out;
+
+ if (!run_add_entry(run, vcn + len, SPARSE_LCN, clst_data - len,
+ false)) {
+ err = -ENOMEM;
+ goto out;
+ }
+ end = vcn + clst_data;
+ /* run contains updated range [vcn + len : end) */
+ } else {
+ CLST alen, hint = 0;
+ /* Get the last lcn to allocate from */
+ if (vcn + clst_data &&
+ !run_lookup_entry(run, vcn + clst_data - 1, &hint, NULL,
+ NULL)) {
+ hint = -1;
+ }
+
+ err = attr_allocate_clusters(sbi, run, vcn + clst_data,
+ hint + 1, len - clst_data, NULL, 0,
+ &alen, 0, &lcn);
+ if (err)
+ goto out;
+
+ end = vcn + len;
+ /* run contains updated range [vcn + clst_data : end) */
+ }
+
+ total_size += (u64)len << sbi->cluster_bits;
+
+repack:
+ err = mi_pack_runs(mi, attr, run, max(end, evcn1) - svcn);
+ if (err)
+ goto out;
+
+ attr_b->nres.total_size = cpu_to_le64(total_size);
+ inode_set_bytes(&ni->vfs_inode, total_size);
+
+ mi_b->dirty = true;
+ mark_inode_dirty(&ni->vfs_inode);
+
+ /* stored [vcn : next_svcn) from [vcn : end) */
+ next_svcn = le64_to_cpu(attr->nres.evcn) + 1;
+
+ if (end <= evcn1) {
+ if (next_svcn == evcn1) {
+ /* Normal way. update attribute and exit */
+ goto ok;
+ }
+ /* add new segment [next_svcn : evcn1 - next_svcn )*/
+ if (!ni->attr_list.size) {
+ err = ni_create_attr_list(ni);
+ if (err)
+ goto out;
+ /* layout of records is changed */
+ le_b = NULL;
+ attr_b = ni_find_attr(ni, NULL, &le_b, ATTR_DATA, NULL,
+ 0, NULL, &mi_b);
+ if (!attr_b) {
+ err = -ENOENT;
+ goto out;
+ }
+
+ attr = attr_b;
+ le = le_b;
+ mi = mi_b;
+ goto repack;
+ }
+ }
+
+ svcn = evcn1;
+
+ /* Estimate next attribute */
+ attr = ni_find_attr(ni, attr, &le, ATTR_DATA, NULL, 0, &svcn, &mi);
+
+ if (attr) {
+ CLST alloc = bytes_to_cluster(
+ sbi, le64_to_cpu(attr_b->nres.alloc_size));
+ CLST evcn = le64_to_cpu(attr->nres.evcn);
+
+ if (end < next_svcn)
+ end = next_svcn;
+ while (end > evcn) {
+ /* remove segment [svcn : evcn)*/
+ mi_remove_attr(mi, attr);
+
+ if (!al_remove_le(ni, le)) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ if (evcn + 1 >= alloc) {
+ /* last attribute segment */
+ evcn1 = evcn + 1;
+ goto ins_ext;
+ }
+
+ if (ni_load_mi(ni, le, &mi)) {
+ attr = NULL;
+ goto out;
+ }
+
+ attr = mi_find_attr(mi, NULL, ATTR_DATA, NULL, 0,
+ &le->id);
+ if (!attr) {
+ err = -EINVAL;
+ goto out;
+ }
+ svcn = le64_to_cpu(attr->nres.svcn);
+ evcn = le64_to_cpu(attr->nres.evcn);
+ }
+
+ if (end < svcn)
+ end = svcn;
+
+ err = attr_load_runs(attr, ni, run, &end);
+ if (err)
+ goto out;
+
+ evcn1 = evcn + 1;
+ attr->nres.svcn = cpu_to_le64(next_svcn);
+ err = mi_pack_runs(mi, attr, run, evcn1 - next_svcn);
+ if (err)
+ goto out;
+
+ le->vcn = cpu_to_le64(next_svcn);
+ ni->attr_list.dirty = true;
+ mi->dirty = true;
+
+ next_svcn = le64_to_cpu(attr->nres.evcn) + 1;
+ }
+ins_ext:
+ if (evcn1 > next_svcn) {
+ err = ni_insert_nonresident(ni, ATTR_DATA, NULL, 0, run,
+ next_svcn, evcn1 - next_svcn,
+ attr_b->flags, &attr, &mi);
+ if (err)
+ goto out;
+ }
+ok:
+ run_truncate_around(run, vcn);
+out:
+ if (new_valid > data_size)
+ new_valid = data_size;
+
+ valid_size = le64_to_cpu(attr_b->nres.valid_size);
+ if (new_valid != valid_size) {
+ attr_b->nres.valid_size = cpu_to_le64(valid_size);
+ mi_b->dirty = true;
+ }
+
+ return err;
+}
+
+/* Collapse range in file */
+int attr_collapse_range(struct ntfs_inode *ni, u64 vbo, u64 bytes)
+{
+ int err = 0;
+ struct runs_tree *run = &ni->file.run;
+ struct ntfs_sb_info *sbi = ni->mi.sbi;
+ struct ATTRIB *attr = NULL, *attr_b;
+ struct ATTR_LIST_ENTRY *le, *le_b;
+ struct mft_inode *mi, *mi_b;
+ CLST svcn, evcn1, len, dealloc, alen;
+ CLST vcn, end;
+ u64 valid_size, data_size, alloc_size, total_size;
+ u32 mask;
+ __le16 a_flags;
+
+ if (!bytes)
+ return 0;
+
+ le_b = NULL;
+ attr_b = ni_find_attr(ni, NULL, &le_b, ATTR_DATA, NULL, 0, NULL, &mi_b);
+ if (!attr_b)
+ return -ENOENT;
+
+ if (!attr_b->non_res) {
+ /* Attribute is resident. Nothing to do? */
+ return 0;
+ }
+
+ data_size = le64_to_cpu(attr_b->nres.data_size);
+ alloc_size = le64_to_cpu(attr_b->nres.alloc_size);
+ a_flags = attr_b->flags;
+
+ if (is_attr_ext(attr_b)) {
+ total_size = le64_to_cpu(attr_b->nres.total_size);
+ mask = (sbi->cluster_size << attr_b->nres.c_unit) - 1;
+ } else {
+ total_size = alloc_size;
+ mask = sbi->cluster_mask;
+ }
+
+ if ((vbo & mask) || (bytes & mask)) {
+ /* allow to collapse only cluster aligned ranges */
+ return -EINVAL;
+ }
+
+ if (vbo > data_size)
+ return -EINVAL;
+
+ down_write(&ni->file.run_lock);
+
+ if (vbo + bytes >= data_size) {
+ u64 new_valid = min(ni->i_valid, vbo);
+
+ /* Simple truncate file at 'vbo' */
+ truncate_setsize(&ni->vfs_inode, vbo);
+ err = attr_set_size(ni, ATTR_DATA, NULL, 0, &ni->file.run, vbo,
+ &new_valid, true, NULL);
+
+ if (!err && new_valid < ni->i_valid)
+ ni->i_valid = new_valid;
+
+ goto out;
+ }
+
+ /*
+ * Enumerate all attribute segments and collapse
+ */
+ alen = alloc_size >> sbi->cluster_bits;
+ vcn = vbo >> sbi->cluster_bits;
+ len = bytes >> sbi->cluster_bits;
+ end = vcn + len;
+ dealloc = 0;
+
+ svcn = le64_to_cpu(attr_b->nres.svcn);
+ evcn1 = le64_to_cpu(attr_b->nres.evcn) + 1;
+
+ if (svcn <= vcn && vcn < evcn1) {
+ attr = attr_b;
+ le = le_b;
+ mi = mi_b;
+ } else if (!le_b) {
+ err = -EINVAL;
+ goto out;
+ } else {
+ le = le_b;
+ attr = ni_find_attr(ni, attr_b, &le, ATTR_DATA, NULL, 0, &vcn,
+ &mi);
+ if (!attr) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ svcn = le64_to_cpu(attr->nres.svcn);
+ evcn1 = le64_to_cpu(attr->nres.evcn) + 1;
+ }
+
+ for (;;) {
+ if (svcn >= end) {
+ /* shift vcn */
+ attr->nres.svcn = cpu_to_le64(svcn - len);
+ attr->nres.evcn = cpu_to_le64(evcn1 - 1 - len);
+ if (le) {
+ le->vcn = attr->nres.svcn;
+ ni->attr_list.dirty = true;
+ }
+ mi->dirty = true;
+ } else if (svcn < vcn || end < evcn1) {
+ CLST vcn1, eat, next_svcn;
+
+ /* collapse a part of this attribute segment */
+ err = attr_load_runs(attr, ni, run, &svcn);
+ if (err)
+ goto out;
+ vcn1 = max(vcn, svcn);
+ eat = min(end, evcn1) - vcn1;
+
+ err = run_deallocate_ex(sbi, run, vcn1, eat, &dealloc,
+ true);
+ if (err)
+ goto out;
+
+ if (!run_collapse_range(run, vcn1, eat)) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ if (svcn >= vcn) {
+ /* shift vcn */
+ attr->nres.svcn = cpu_to_le64(vcn);
+ if (le) {
+ le->vcn = attr->nres.svcn;
+ ni->attr_list.dirty = true;
+ }
+ }
+
+ err = mi_pack_runs(mi, attr, run, evcn1 - svcn - eat);
+ if (err)
+ goto out;
+
+ next_svcn = le64_to_cpu(attr->nres.evcn) + 1;
+ if (next_svcn + eat < evcn1) {
+ err = ni_insert_nonresident(
+ ni, ATTR_DATA, NULL, 0, run, next_svcn,
+ evcn1 - eat - next_svcn, a_flags, &attr,
+ &mi);
+ if (err)
+ goto out;
+
+ /* layout of records maybe changed */
+ attr_b = NULL;
+ le = al_find_ex(ni, NULL, ATTR_DATA, NULL, 0,
+ &next_svcn);
+ if (!le) {
+ err = -EINVAL;
+ goto out;
+ }
+ }
+
+ /* free all allocated memory */
+ run_truncate(run, 0);
+ } else {
+ u16 le_sz;
+ u16 roff = le16_to_cpu(attr->nres.run_off);
+
+ /*run==1 means unpack and deallocate*/
+ run_unpack_ex(RUN_DEALLOCATE, sbi, ni->mi.rno, svcn,
+ evcn1 - 1, svcn, Add2Ptr(attr, roff),
+ le32_to_cpu(attr->size) - roff);
+
+ /* delete this attribute segment */
+ mi_remove_attr(mi, attr);
+ if (!le)
+ break;
+
+ le_sz = le16_to_cpu(le->size);
+ if (!al_remove_le(ni, le)) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ if (evcn1 >= alen)
+ break;
+
+ if (!svcn) {
+ /* Load next record that contains this attribute */
+ if (ni_load_mi(ni, le, &mi)) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ /* Look for required attribute */
+ attr = mi_find_attr(mi, NULL, ATTR_DATA, NULL,
+ 0, &le->id);
+ if (!attr) {
+ err = -EINVAL;
+ goto out;
+ }
+ goto next_attr;
+ }
+ le = (struct ATTR_LIST_ENTRY *)((u8 *)le - le_sz);
+ }
+
+ if (evcn1 >= alen)
+ break;
+
+ attr = ni_enum_attr_ex(ni, attr, &le, &mi);
+ if (!attr) {
+ err = -EINVAL;
+ goto out;
+ }
+
+next_attr:
+ svcn = le64_to_cpu(attr->nres.svcn);
+ evcn1 = le64_to_cpu(attr->nres.evcn) + 1;
+ }
+
+ if (!attr_b) {
+ le_b = NULL;
+ attr_b = ni_find_attr(ni, NULL, &le_b, ATTR_DATA, NULL, 0, NULL,
+ &mi_b);
+ if (!attr_b) {
+ err = -ENOENT;
+ goto out;
+ }
+ }
+
+ data_size -= bytes;
+ valid_size = ni->i_valid;
+ if (vbo + bytes <= valid_size)
+ valid_size -= bytes;
+ else if (vbo < valid_size)
+ valid_size = vbo;
+
+ attr_b->nres.alloc_size = cpu_to_le64(alloc_size - bytes);
+ attr_b->nres.data_size = cpu_to_le64(data_size);
+ attr_b->nres.valid_size = cpu_to_le64(min(valid_size, data_size));
+ total_size -= (u64)dealloc << sbi->cluster_bits;
+ if (is_attr_ext(attr_b))
+ attr_b->nres.total_size = cpu_to_le64(total_size);
+ mi_b->dirty = true;
+
+ /*update inode size*/
+ ni->i_valid = valid_size;
+ ni->vfs_inode.i_size = data_size;
+ inode_set_bytes(&ni->vfs_inode, total_size);
+ ni->ni_flags |= NI_FLAG_UPDATE_PARENT;
+ mark_inode_dirty(&ni->vfs_inode);
+
+out:
+ up_write(&ni->file.run_lock);
+ if (err)
+ make_bad_inode(&ni->vfs_inode);
+
+ return err;
+}
+
+/* not for normal files */
+int attr_punch_hole(struct ntfs_inode *ni, u64 vbo, u64 bytes, u32 *frame_size)
+{
+ int err = 0;
+ struct runs_tree *run = &ni->file.run;
+ struct ntfs_sb_info *sbi = ni->mi.sbi;
+ struct ATTRIB *attr = NULL, *attr_b;
+ struct ATTR_LIST_ENTRY *le, *le_b;
+ struct mft_inode *mi, *mi_b;
+ CLST svcn, evcn1, vcn, len, end, alen, dealloc;
+ u64 total_size, alloc_size;
+ u32 mask;
+
+ if (!bytes)
+ return 0;
+
+ le_b = NULL;
+ attr_b = ni_find_attr(ni, NULL, &le_b, ATTR_DATA, NULL, 0, NULL, &mi_b);
+ if (!attr_b)
+ return -ENOENT;
+
+ if (!attr_b->non_res) {
+ u32 data_size = le32_to_cpu(attr->res.data_size);
+ u32 from, to;
+
+ if (vbo > data_size)
+ return 0;
+
+ from = vbo;
+ to = (vbo + bytes) < data_size ? (vbo + bytes) : data_size;
+ memset(Add2Ptr(resident_data(attr_b), from), 0, to - from);
+ return 0;
+ }
+
+ if (!is_attr_ext(attr_b))
+ return -EOPNOTSUPP;
+
+ alloc_size = le64_to_cpu(attr_b->nres.alloc_size);
+ total_size = le64_to_cpu(attr_b->nres.total_size);
+
+ if (vbo >= alloc_size) {
+ // NOTE: it is allowed
+ return 0;
+ }
+
+ mask = (sbi->cluster_size << attr_b->nres.c_unit) - 1;
+
+ bytes += vbo;
+ if (bytes > alloc_size)
+ bytes = alloc_size;
+ bytes -= vbo;
+
+ if ((vbo & mask) || (bytes & mask)) {
+ /* We have to zero a range(s)*/
+ if (frame_size == NULL) {
+ /* Caller insists range is aligned */
+ return -EINVAL;
+ }
+ *frame_size = mask + 1;
+ return E_NTFS_NOTALIGNED;
+ }
+
+ down_write(&ni->file.run_lock);
+ /*
+ * Enumerate all attribute segments and punch hole where necessary
+ */
+ alen = alloc_size >> sbi->cluster_bits;
+ vcn = vbo >> sbi->cluster_bits;
+ len = bytes >> sbi->cluster_bits;
+ end = vcn + len;
+ dealloc = 0;
+
+ svcn = le64_to_cpu(attr_b->nres.svcn);
+ evcn1 = le64_to_cpu(attr_b->nres.evcn) + 1;
+
+ if (svcn <= vcn && vcn < evcn1) {
+ attr = attr_b;
+ le = le_b;
+ mi = mi_b;
+ } else if (!le_b) {
+ err = -EINVAL;
+ goto out;
+ } else {
+ le = le_b;
+ attr = ni_find_attr(ni, attr_b, &le, ATTR_DATA, NULL, 0, &vcn,
+ &mi);
+ if (!attr) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ svcn = le64_to_cpu(attr->nres.svcn);
+ evcn1 = le64_to_cpu(attr->nres.evcn) + 1;
+ }
+
+ while (svcn < end) {
+ CLST vcn1, zero, dealloc2;
+
+ err = attr_load_runs(attr, ni, run, &svcn);
+ if (err)
+ goto out;
+ vcn1 = max(vcn, svcn);
+ zero = min(end, evcn1) - vcn1;
+
+ dealloc2 = dealloc;
+ err = run_deallocate_ex(sbi, run, vcn1, zero, &dealloc, true);
+ if (err)
+ goto out;
+
+ if (dealloc2 == dealloc) {
+ /* looks like the required range is already sparsed */
+ } else {
+ if (!run_add_entry(run, vcn1, SPARSE_LCN, zero,
+ false)) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ err = mi_pack_runs(mi, attr, run, evcn1 - svcn);
+ if (err)
+ goto out;
+ }
+ /* free all allocated memory */
+ run_truncate(run, 0);
+
+ if (evcn1 >= alen)
+ break;
+
+ attr = ni_enum_attr_ex(ni, attr, &le, &mi);
+ if (!attr) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ svcn = le64_to_cpu(attr->nres.svcn);
+ evcn1 = le64_to_cpu(attr->nres.evcn) + 1;
+ }
+
+ total_size -= (u64)dealloc << sbi->cluster_bits;
+ attr_b->nres.total_size = cpu_to_le64(total_size);
+ mi_b->dirty = true;
+
+ /*update inode size*/
+ inode_set_bytes(&ni->vfs_inode, total_size);
+ ni->ni_flags |= NI_FLAG_UPDATE_PARENT;
+ mark_inode_dirty(&ni->vfs_inode);
+
+out:
+ up_write(&ni->file.run_lock);
+ if (err)
+ make_bad_inode(&ni->vfs_inode);
+
+ return err;
+}
diff --git a/fs/ntfs3/attrlist.c b/fs/ntfs3/attrlist.c
new file mode 100644
index 000000000000..ea561361b576
--- /dev/null
+++ b/fs/ntfs3/attrlist.c
@@ -0,0 +1,456 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ *
+ * Copyright (C) 2019-2021 Paragon Software GmbH, All rights reserved.
+ *
+ */
+
+#include <linux/blkdev.h>
+#include <linux/buffer_head.h>
+#include <linux/fs.h>
+#include <linux/nls.h>
+
+#include "debug.h"
+#include "ntfs.h"
+#include "ntfs_fs.h"
+
+/* Returns true if le is valid */
+static inline bool al_is_valid_le(const struct ntfs_inode *ni,
+ struct ATTR_LIST_ENTRY *le)
+{
+ if (!le || !ni->attr_list.le || !ni->attr_list.size)
+ return false;
+
+ return PtrOffset(ni->attr_list.le, le) + le16_to_cpu(le->size) <=
+ ni->attr_list.size;
+}
+
+void al_destroy(struct ntfs_inode *ni)
+{
+ run_close(&ni->attr_list.run);
+ ntfs_free(ni->attr_list.le);
+ ni->attr_list.le = NULL;
+ ni->attr_list.size = 0;
+ ni->attr_list.dirty = false;
+}
+
+/*
+ * ntfs_load_attr_list
+ *
+ * This method makes sure that the ATTRIB list, if present,
+ * has been properly set up.
+ */
+int ntfs_load_attr_list(struct ntfs_inode *ni, struct ATTRIB *attr)
+{
+ int err;
+ size_t lsize;
+ void *le = NULL;
+
+ if (ni->attr_list.size)
+ return 0;
+
+ if (!attr->non_res) {
+ lsize = le32_to_cpu(attr->res.data_size);
+ le = ntfs_malloc(al_aligned(lsize));
+ if (!le) {
+ err = -ENOMEM;
+ goto out;
+ }
+ memcpy(le, resident_data(attr), lsize);
+ } else if (attr->nres.svcn) {
+ err = -EINVAL;
+ goto out;
+ } else {
+ u16 run_off = le16_to_cpu(attr->nres.run_off);
+
+ lsize = le64_to_cpu(attr->nres.data_size);
+
+ run_init(&ni->attr_list.run);
+
+ err = run_unpack_ex(&ni->attr_list.run, ni->mi.sbi, ni->mi.rno,
+ 0, le64_to_cpu(attr->nres.evcn), 0,
+ Add2Ptr(attr, run_off),
+ le32_to_cpu(attr->size) - run_off);
+ if (err < 0)
+ goto out;
+
+ le = ntfs_malloc(al_aligned(lsize));
+ if (!le) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ err = ntfs_read_run_nb(ni->mi.sbi, &ni->attr_list.run, 0, le,
+ lsize, NULL);
+ if (err)
+ goto out;
+ }
+
+ ni->attr_list.size = lsize;
+ ni->attr_list.le = le;
+
+ return 0;
+
+out:
+ ni->attr_list.le = le;
+ al_destroy(ni);
+
+ return err;
+}
+
+/*
+ * al_enumerate
+ *
+ * Returns the next list 'le'
+ * if 'le' is NULL then returns the first 'le'
+ */
+struct ATTR_LIST_ENTRY *al_enumerate(struct ntfs_inode *ni,
+ struct ATTR_LIST_ENTRY *le)
+{
+ size_t off;
+ u16 sz;
+
+ if (!le) {
+ le = ni->attr_list.le;
+ } else {
+ sz = le16_to_cpu(le->size);
+ if (sz < sizeof(struct ATTR_LIST_ENTRY)) {
+ /* Impossible 'cause we should not return such 'le' */
+ return NULL;
+ }
+ le = Add2Ptr(le, sz);
+ }
+
+ /* Check boundary */
+ off = PtrOffset(ni->attr_list.le, le);
+ if (off + sizeof(struct ATTR_LIST_ENTRY) > ni->attr_list.size) {
+ // The regular end of list
+ return NULL;
+ }
+
+ sz = le16_to_cpu(le->size);
+
+ /* Check 'le' for errors */
+ if (sz < sizeof(struct ATTR_LIST_ENTRY) ||
+ off + sz > ni->attr_list.size ||
+ sz < le->name_off + le->name_len * sizeof(short)) {
+ return NULL;
+ }
+
+ return le;
+}
+
+/*
+ * al_find_le
+ *
+ * finds the first 'le' in the list which matches type, name and vcn
+ * Returns NULL if not found
+ */
+struct ATTR_LIST_ENTRY *al_find_le(struct ntfs_inode *ni,
+ struct ATTR_LIST_ENTRY *le,
+ const struct ATTRIB *attr)
+{
+ CLST svcn = attr_svcn(attr);
+
+ return al_find_ex(ni, le, attr->type, attr_name(attr), attr->name_len,
+ &svcn);
+}
+
+/*
+ * al_find_ex
+ *
+ * finds the first 'le' in the list which matches type, name and vcn
+ * Returns NULL if not found
+ */
+struct ATTR_LIST_ENTRY *al_find_ex(struct ntfs_inode *ni,
+ struct ATTR_LIST_ENTRY *le,
+ enum ATTR_TYPE type, const __le16 *name,
+ u8 name_len, const CLST *vcn)
+{
+ struct ATTR_LIST_ENTRY *ret = NULL;
+ u32 type_in = le32_to_cpu(type);
+
+ while ((le = al_enumerate(ni, le))) {
+ u64 le_vcn;
+ int diff = le32_to_cpu(le->type) - type_in;
+
+ /* List entries are sorted by type, name and vcn */
+ if (diff < 0)
+ continue;
+
+ if (diff > 0)
+ return ret;
+
+ if (le->name_len != name_len)
+ continue;
+
+ le_vcn = le64_to_cpu(le->vcn);
+ if (!le_vcn) {
+ /*
+ * compare entry names only for entry with vcn == 0
+ */
+ diff = ntfs_cmp_names(le_name(le), name_len, name,
+ name_len, ni->mi.sbi->upcase,
+ true);
+ if (diff < 0)
+ continue;
+
+ if (diff > 0)
+ return ret;
+ }
+
+ if (!vcn)
+ return le;
+
+ if (*vcn == le_vcn)
+ return le;
+
+ if (*vcn < le_vcn)
+ return ret;
+
+ ret = le;
+ }
+
+ return ret;
+}
+
+/*
+ * al_find_le_to_insert
+ *
+ * finds the first list entry which matches type, name and vcn
+ */
+static struct ATTR_LIST_ENTRY *al_find_le_to_insert(struct ntfs_inode *ni,
+ enum ATTR_TYPE type,
+ const __le16 *name,
+ u8 name_len, CLST vcn)
+{
+ struct ATTR_LIST_ENTRY *le = NULL, *prev;
+ u32 type_in = le32_to_cpu(type);
+
+ /* List entries are sorted by type, name, vcn */
+ while ((le = al_enumerate(ni, prev = le))) {
+ int diff = le32_to_cpu(le->type) - type_in;
+
+ if (diff < 0)
+ continue;
+
+ if (diff > 0)
+ return le;
+
+ if (!le->vcn) {
+ /*
+ * compare entry names only for entry with vcn == 0
+ */
+ diff = ntfs_cmp_names(le_name(le), le->name_len, name,
+ name_len, ni->mi.sbi->upcase,
+ true);
+ if (diff < 0)
+ continue;
+
+ if (diff > 0)
+ return le;
+ }
+
+ if (le64_to_cpu(le->vcn) >= vcn)
+ return le;
+ }
+
+ return prev ? Add2Ptr(prev, le16_to_cpu(prev->size)) : ni->attr_list.le;
+}
+
+/*
+ * al_add_le
+ *
+ * adds an "attribute list entry" to the list.
+ */
+int al_add_le(struct ntfs_inode *ni, enum ATTR_TYPE type, const __le16 *name,
+ u8 name_len, CLST svcn, __le16 id, const struct MFT_REF *ref,
+ struct ATTR_LIST_ENTRY **new_le)
+{
+ int err;
+ struct ATTRIB *attr;
+ struct ATTR_LIST_ENTRY *le;
+ size_t off;
+ u16 sz;
+ size_t asize, new_asize;
+ u64 new_size;
+ typeof(ni->attr_list) *al = &ni->attr_list;
+
+ /*
+ * Compute the size of the new 'le'
+ */
+ sz = le_size(name_len);
+ new_size = al->size + sz;
+ asize = al_aligned(al->size);
+ new_asize = al_aligned(new_size);
+
+ /* Scan forward to the point at which the new 'le' should be inserted. */
+ le = al_find_le_to_insert(ni, type, name, name_len, svcn);
+ off = PtrOffset(al->le, le);
+
+ if (new_size > asize) {
+ void *ptr = ntfs_malloc(new_asize);
+
+ if (!ptr)
+ return -ENOMEM;
+
+ memcpy(ptr, al->le, off);
+ memcpy(Add2Ptr(ptr, off + sz), le, al->size - off);
+ le = Add2Ptr(ptr, off);
+ ntfs_free(al->le);
+ al->le = ptr;
+ } else {
+ memmove(Add2Ptr(le, sz), le, al->size - off);
+ }
+
+ al->size = new_size;
+
+ le->type = type;
+ le->size = cpu_to_le16(sz);
+ le->name_len = name_len;
+ le->name_off = offsetof(struct ATTR_LIST_ENTRY, name);
+ le->vcn = cpu_to_le64(svcn);
+ le->ref = *ref;
+ le->id = id;
+ memcpy(le->name, name, sizeof(short) * name_len);
+
+ al->dirty = true;
+
+ err = attr_set_size(ni, ATTR_LIST, NULL, 0, &al->run, new_size,
+ &new_size, true, &attr);
+ if (err)
+ return err;
+
+ if (attr && attr->non_res) {
+ err = ntfs_sb_write_run(ni->mi.sbi, &al->run, 0, al->le,
+ al->size);
+ if (err)
+ return err;
+ }
+
+ al->dirty = false;
+ *new_le = le;
+
+ return 0;
+}
+
+/*
+ * al_remove_le
+ *
+ * removes 'le' from attribute list
+ */
+bool al_remove_le(struct ntfs_inode *ni, struct ATTR_LIST_ENTRY *le)
+{
+ u16 size;
+ size_t off;
+ typeof(ni->attr_list) *al = &ni->attr_list;
+
+ if (!al_is_valid_le(ni, le))
+ return false;
+
+ /* Save on stack the size of 'le' */
+ size = le16_to_cpu(le->size);
+ off = PtrOffset(al->le, le);
+
+ memmove(le, Add2Ptr(le, size), al->size - (off + size));
+
+ al->size -= size;
+ al->dirty = true;
+
+ return true;
+}
+
+/*
+ * al_delete_le
+ *
+ * deletes from the list the first 'le' which matches its parameters.
+ */
+bool al_delete_le(struct ntfs_inode *ni, enum ATTR_TYPE type, CLST vcn,
+ const __le16 *name, size_t name_len,
+ const struct MFT_REF *ref)
+{
+ u16 size;
+ struct ATTR_LIST_ENTRY *le;
+ size_t off;
+ typeof(ni->attr_list) *al = &ni->attr_list;
+
+ /* Scan forward to the first 'le' that matches the input */
+ le = al_find_ex(ni, NULL, type, name, name_len, &vcn);
+ if (!le)
+ return false;
+
+ off = PtrOffset(al->le, le);
+
+next:
+ if (off >= al->size)
+ return false;
+ if (le->type != type)
+ return false;
+ if (le->name_len != name_len)
+ return false;
+ if (name_len && ntfs_cmp_names(le_name(le), name_len, name, name_len,
+ ni->mi.sbi->upcase, true))
+ return false;
+ if (le64_to_cpu(le->vcn) != vcn)
+ return false;
+
+ /*
+ * The caller specified a segment reference, so we have to
+ * scan through the matching entries until we find that segment
+ * reference or we run of matching entries.
+ */
+ if (ref && memcmp(ref, &le->ref, sizeof(*ref))) {
+ off += le16_to_cpu(le->size);
+ le = Add2Ptr(al->le, off);
+ goto next;
+ }
+
+ /* Save on stack the size of 'le' */
+ size = le16_to_cpu(le->size);
+ /* Delete 'le'. */
+ memmove(le, Add2Ptr(le, size), al->size - (off + size));
+
+ al->size -= size;
+ al->dirty = true;
+
+ return true;
+}
+
+/*
+ * al_update
+ */
+int al_update(struct ntfs_inode *ni)
+{
+ int err;
+ struct ATTRIB *attr;
+ typeof(ni->attr_list) *al = &ni->attr_list;
+
+ if (!al->dirty || !al->size)
+ return 0;
+
+ /*
+ * attribute list increased on demand in al_add_le
+ * attribute list decreased here
+ */
+ err = attr_set_size(ni, ATTR_LIST, NULL, 0, &al->run, al->size, NULL,
+ false, &attr);
+ if (err)
+ goto out;
+
+ if (!attr->non_res) {
+ memcpy(resident_data(attr), al->le, al->size);
+ } else {
+ err = ntfs_sb_write_run(ni->mi.sbi, &al->run, 0, al->le,
+ al->size);
+ if (err)
+ goto out;
+
+ attr->nres.valid_size = attr->nres.data_size;
+ }
+
+ ni->mi.dirty = true;
+ al->dirty = false;
+
+out:
+ return err;
+}
diff --git a/fs/ntfs3/xattr.c b/fs/ntfs3/xattr.c
new file mode 100644
index 000000000000..98871c895e77
--- /dev/null
+++ b/fs/ntfs3/xattr.c
@@ -0,0 +1,1128 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ *
+ * Copyright (C) 2019-2021 Paragon Software GmbH, All rights reserved.
+ *
+ */
+
+#include <linux/blkdev.h>
+#include <linux/buffer_head.h>
+#include <linux/fs.h>
+#include <linux/nls.h>
+#include <linux/posix_acl.h>
+#include <linux/posix_acl_xattr.h>
+#include <linux/xattr.h>
+
+#include "debug.h"
+#include "ntfs.h"
+#include "ntfs_fs.h"
+
+// clang-format off
+#define SYSTEM_DOS_ATTRIB "system.dos_attrib"
+#define SYSTEM_NTFS_ATTRIB "system.ntfs_attrib"
+#define SYSTEM_NTFS_SECURITY "system.ntfs_security"
+// clang-format on
+
+static inline size_t unpacked_ea_size(const struct EA_FULL *ea)
+{
+ return ea->size ? le32_to_cpu(ea->size)
+ : DwordAlign(struct_size(
+ ea, name,
+ 1 + ea->name_len + le16_to_cpu(ea->elength)));
+}
+
+static inline size_t packed_ea_size(const struct EA_FULL *ea)
+{
+ return struct_size(ea, name,
+ 1 + ea->name_len + le16_to_cpu(ea->elength)) -
+ offsetof(struct EA_FULL, flags);
+}
+
+/*
+ * find_ea
+ *
+ * assume there is at least one xattr in the list
+ */
+static inline bool find_ea(const struct EA_FULL *ea_all, u32 bytes,
+ const char *name, u8 name_len, u32 *off)
+{
+ *off = 0;
+
+ if (!ea_all || !bytes)
+ return false;
+
+ for (;;) {
+ const struct EA_FULL *ea = Add2Ptr(ea_all, *off);
+ u32 next_off = *off + unpacked_ea_size(ea);
+
+ if (next_off > bytes)
+ return false;
+
+ if (ea->name_len == name_len &&
+ !memcmp(ea->name, name, name_len))
+ return true;
+
+ *off = next_off;
+ if (next_off >= bytes)
+ return false;
+ }
+}
+
+/*
+ * ntfs_read_ea
+ *
+ * reads all extended attributes
+ * ea - new allocated memory
+ * info - pointer into resident data
+ */
+static int ntfs_read_ea(struct ntfs_inode *ni, struct EA_FULL **ea,
+ size_t add_bytes, const struct EA_INFO **info)
+{
+ int err;
+ struct ATTR_LIST_ENTRY *le = NULL;
+ struct ATTRIB *attr_info, *attr_ea;
+ void *ea_p;
+ u32 size;
+
+ static_assert(le32_to_cpu(ATTR_EA_INFO) < le32_to_cpu(ATTR_EA));
+
+ *ea = NULL;
+ *info = NULL;
+
+ attr_info =
+ ni_find_attr(ni, NULL, &le, ATTR_EA_INFO, NULL, 0, NULL, NULL);
+ attr_ea =
+ ni_find_attr(ni, attr_info, &le, ATTR_EA, NULL, 0, NULL, NULL);
+
+ if (!attr_ea || !attr_info)
+ return 0;
+
+ *info = resident_data_ex(attr_info, sizeof(struct EA_INFO));
+ if (!*info)
+ return -EINVAL;
+
+ /* Check Ea limit */
+ size = le32_to_cpu((*info)->size);
+ if (size > ni->mi.sbi->ea_max_size)
+ return -EFBIG;
+
+ if (attr_size(attr_ea) > ni->mi.sbi->ea_max_size)
+ return -EFBIG;
+
+ /* Allocate memory for packed Ea */
+ ea_p = ntfs_malloc(size + add_bytes);
+ if (!ea_p)
+ return -ENOMEM;
+
+ if (attr_ea->non_res) {
+ struct runs_tree run;
+
+ run_init(&run);
+
+ err = attr_load_runs(attr_ea, ni, &run, NULL);
+ if (!err)
+ err = ntfs_read_run_nb(ni->mi.sbi, &run, 0, ea_p, size,
+ NULL);
+ run_close(&run);
+
+ if (err)
+ goto out;
+ } else {
+ void *p = resident_data_ex(attr_ea, size);
+
+ if (!p) {
+ err = -EINVAL;
+ goto out;
+ }
+ memcpy(ea_p, p, size);
+ }
+
+ memset(Add2Ptr(ea_p, size), 0, add_bytes);
+ *ea = ea_p;
+ return 0;
+
+out:
+ ntfs_free(ea_p);
+ *ea = NULL;
+ return err;
+}
+
+/*
+ * ntfs_list_ea
+ *
+ * copy a list of xattrs names into the buffer
+ * provided, or compute the buffer size required
+ *
+ * Returns a negative error number on failure, or the number of bytes
+ * used / required on success.
+ */
+static ssize_t ntfs_list_ea(struct ntfs_inode *ni, char *buffer,
+ size_t bytes_per_buffer)
+{
+ const struct EA_INFO *info;
+ struct EA_FULL *ea_all = NULL;
+ const struct EA_FULL *ea;
+ u32 off, size;
+ int err;
+ size_t ret;
+
+ err = ntfs_read_ea(ni, &ea_all, 0, &info);
+ if (err)
+ return err;
+
+ if (!info || !ea_all)
+ return 0;
+
+ size = le32_to_cpu(info->size);
+
+ /* Enumerate all xattrs */
+ for (ret = 0, off = 0; off < size; off += unpacked_ea_size(ea)) {
+ ea = Add2Ptr(ea_all, off);
+
+ if (buffer) {
+ if (ret + ea->name_len + 1 > bytes_per_buffer) {
+ err = -ERANGE;
+ goto out;
+ }
+
+ memcpy(buffer + ret, ea->name, ea->name_len);
+ buffer[ret + ea->name_len] = 0;
+ }
+
+ ret += ea->name_len + 1;
+ }
+
+out:
+ ntfs_free(ea_all);
+ return err ? err : ret;
+}
+
+static int ntfs_get_ea(struct inode *inode, const char *name, size_t name_len,
+ void *buffer, size_t size, size_t *required)
+{
+ struct ntfs_inode *ni = ntfs_i(inode);
+ const struct EA_INFO *info;
+ struct EA_FULL *ea_all = NULL;
+ const struct EA_FULL *ea;
+ u32 off, len;
+ int err;
+
+ if (!(ni->ni_flags & NI_FLAG_EA))
+ return -ENODATA;
+
+ if (!required)
+ ni_lock(ni);
+
+ len = 0;
+
+ if (name_len > 255) {
+ err = -ENAMETOOLONG;
+ goto out;
+ }
+
+ err = ntfs_read_ea(ni, &ea_all, 0, &info);
+ if (err)
+ goto out;
+
+ if (!info)
+ goto out;
+
+ /* Enumerate all xattrs */
+ if (!find_ea(ea_all, le32_to_cpu(info->size), name, name_len, &off)) {
+ err = -ENODATA;
+ goto out;
+ }
+ ea = Add2Ptr(ea_all, off);
+
+ len = le16_to_cpu(ea->elength);
+ if (!buffer) {
+ err = 0;
+ goto out;
+ }
+
+ if (len > size) {
+ err = -ERANGE;
+ if (required)
+ *required = len;
+ goto out;
+ }
+
+ memcpy(buffer, ea->name + ea->name_len + 1, len);
+ err = 0;
+
+out:
+ ntfs_free(ea_all);
+ if (!required)
+ ni_unlock(ni);
+
+ return err ? err : len;
+}
+
+static noinline int ntfs_set_ea(struct inode *inode, const char *name,
+ size_t name_len, const void *value,
+ size_t val_size, int flags, int locked)
+{
+ struct ntfs_inode *ni = ntfs_i(inode);
+ struct ntfs_sb_info *sbi = ni->mi.sbi;
+ int err;
+ struct EA_INFO ea_info;
+ const struct EA_INFO *info;
+ struct EA_FULL *new_ea;
+ struct EA_FULL *ea_all = NULL;
+ size_t add, new_pack;
+ u32 off, size;
+ __le16 size_pack;
+ struct ATTRIB *attr;
+ struct ATTR_LIST_ENTRY *le;
+ struct mft_inode *mi;
+ struct runs_tree ea_run;
+ u64 new_sz;
+ void *p;
+
+ if (!locked)
+ ni_lock(ni);
+
+ run_init(&ea_run);
+
+ if (name_len > 255) {
+ err = -ENAMETOOLONG;
+ goto out;
+ }
+
+ add = DwordAlign(struct_size(ea_all, name, 1 + name_len + val_size));
+
+ err = ntfs_read_ea(ni, &ea_all, add, &info);
+ if (err)
+ goto out;
+
+ if (!info) {
+ memset(&ea_info, 0, sizeof(ea_info));
+ size = 0;
+ size_pack = 0;
+ } else {
+ memcpy(&ea_info, info, sizeof(ea_info));
+ size = le32_to_cpu(ea_info.size);
+ size_pack = ea_info.size_pack;
+ }
+
+ if (info && find_ea(ea_all, size, name, name_len, &off)) {
+ struct EA_FULL *ea;
+ size_t ea_sz;
+
+ if (flags & XATTR_CREATE) {
+ err = -EEXIST;
+ goto out;
+ }
+
+ ea = Add2Ptr(ea_all, off);
+
+ /*
+ * Check simple case when we try to insert xattr with the same value
+ * e.g. ntfs_save_wsl_perm
+ */
+ if (val_size && le16_to_cpu(ea->elength) == val_size &&
+ !memcmp(ea->name + ea->name_len + 1, value, val_size)) {
+ /* xattr already contains the required value */
+ goto out;
+ }
+
+ /* Remove current xattr */
+ if (ea->flags & FILE_NEED_EA)
+ le16_add_cpu(&ea_info.count, -1);
+
+ ea_sz = unpacked_ea_size(ea);
+
+ le16_add_cpu(&ea_info.size_pack, 0 - packed_ea_size(ea));
+
+ memmove(ea, Add2Ptr(ea, ea_sz), size - off - ea_sz);
+
+ size -= ea_sz;
+ memset(Add2Ptr(ea_all, size), 0, ea_sz);
+
+ ea_info.size = cpu_to_le32(size);
+
+ if ((flags & XATTR_REPLACE) && !val_size) {
+ /* remove xattr */
+ goto update_ea;
+ }
+ } else {
+ if (flags & XATTR_REPLACE) {
+ err = -ENODATA;
+ goto out;
+ }
+
+ if (!ea_all) {
+ ea_all = ntfs_zalloc(add);
+ if (!ea_all) {
+ err = -ENOMEM;
+ goto out;
+ }
+ }
+ }
+
+ /* append new xattr */
+ new_ea = Add2Ptr(ea_all, size);
+ new_ea->size = cpu_to_le32(add);
+ new_ea->flags = 0;
+ new_ea->name_len = name_len;
+ new_ea->elength = cpu_to_le16(val_size);
+ memcpy(new_ea->name, name, name_len);
+ new_ea->name[name_len] = 0;
+ memcpy(new_ea->name + name_len + 1, value, val_size);
+ new_pack = le16_to_cpu(ea_info.size_pack) + packed_ea_size(new_ea);
+
+ /* should fit into 16 bits */
+ if (new_pack > 0xffff) {
+ err = -EFBIG; // -EINVAL?
+ goto out;
+ }
+ ea_info.size_pack = cpu_to_le16(new_pack);
+
+ /* new size of ATTR_EA */
+ size += add;
+ if (size > sbi->ea_max_size) {
+ err = -EFBIG; // -EINVAL?
+ goto out;
+ }
+ ea_info.size = cpu_to_le32(size);
+
+update_ea:
+
+ if (!info) {
+ /* Create xattr */
+ if (!size) {
+ err = 0;
+ goto out;
+ }
+
+ err = ni_insert_resident(ni, sizeof(struct EA_INFO),
+ ATTR_EA_INFO, NULL, 0, NULL, NULL);
+ if (err)
+ goto out;
+
+ err = ni_insert_resident(ni, 0, ATTR_EA, NULL, 0, NULL, NULL);
+ if (err)
+ goto out;
+ }
+
+ new_sz = size;
+ err = attr_set_size(ni, ATTR_EA, NULL, 0, &ea_run, new_sz, &new_sz,
+ false, NULL);
+ if (err)
+ goto out;
+
+ le = NULL;
+ attr = ni_find_attr(ni, NULL, &le, ATTR_EA_INFO, NULL, 0, NULL, &mi);
+ if (!attr) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ if (!size) {
+ /* delete xattr, ATTR_EA_INFO */
+ err = ni_remove_attr_le(ni, attr, le);
+ if (err)
+ goto out;
+ } else {
+ p = resident_data_ex(attr, sizeof(struct EA_INFO));
+ if (!p) {
+ err = -EINVAL;
+ goto out;
+ }
+ memcpy(p, &ea_info, sizeof(struct EA_INFO));
+ mi->dirty = true;
+ }
+
+ le = NULL;
+ attr = ni_find_attr(ni, NULL, &le, ATTR_EA, NULL, 0, NULL, &mi);
+ if (!attr) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ if (!size) {
+ /* delete xattr, ATTR_EA */
+ err = ni_remove_attr_le(ni, attr, le);
+ if (err)
+ goto out;
+ } else if (attr->non_res) {
+ err = ntfs_sb_write_run(sbi, &ea_run, 0, ea_all, size);
+ if (err)
+ goto out;
+ } else {
+ p = resident_data_ex(attr, size);
+ if (!p) {
+ err = -EINVAL;
+ goto out;
+ }
+ memcpy(p, ea_all, size);
+ mi->dirty = true;
+ }
+
+ /* Check if we delete the last xattr */
+ if (size)
+ ni->ni_flags |= NI_FLAG_EA;
+ else
+ ni->ni_flags &= ~NI_FLAG_EA;
+
+ if (ea_info.size_pack != size_pack)
+ ni->ni_flags |= NI_FLAG_UPDATE_PARENT;
+ mark_inode_dirty(&ni->vfs_inode);
+
+out:
+ if (!locked)
+ ni_unlock(ni);
+
+ run_close(&ea_run);
+ ntfs_free(ea_all);
+
+ return err;
+}
+
+#ifdef CONFIG_NTFS3_FS_POSIX_ACL
+static inline void ntfs_posix_acl_release(struct posix_acl *acl)
+{
+ if (acl && refcount_dec_and_test(&acl->a_refcount))
+ kfree(acl);
+}
+
+static struct posix_acl *ntfs_get_acl_ex(struct user_namespace *mnt_userns,
+ struct inode *inode, int type,
+ int locked)
+{
+ struct ntfs_inode *ni = ntfs_i(inode);
+ const char *name;
+ size_t name_len;
+ struct posix_acl *acl;
+ size_t req;
+ int err;
+ void *buf;
+
+ /* allocate PATH_MAX bytes */
+ buf = __getname();
+ if (!buf)
+ return ERR_PTR(-ENOMEM);
+
+ /* Possible values of 'type' was already checked above */
+ if (type == ACL_TYPE_ACCESS) {
+ name = XATTR_NAME_POSIX_ACL_ACCESS;
+ name_len = sizeof(XATTR_NAME_POSIX_ACL_ACCESS) - 1;
+ } else {
+ name = XATTR_NAME_POSIX_ACL_DEFAULT;
+ name_len = sizeof(XATTR_NAME_POSIX_ACL_DEFAULT) - 1;
+ }
+
+ if (!locked)
+ ni_lock(ni);
+
+ err = ntfs_get_ea(inode, name, name_len, buf, PATH_MAX, &req);
+
+ if (!locked)
+ ni_unlock(ni);
+
+ /* Translate extended attribute to acl */
+ if (err > 0) {
+ acl = posix_acl_from_xattr(mnt_userns, buf, err);
+ if (!IS_ERR(acl))
+ set_cached_acl(inode, type, acl);
+ } else {
+ acl = err == -ENODATA ? NULL : ERR_PTR(err);
+ }
+
+ __putname(buf);
+
+ return acl;
+}
+
+/*
+ * ntfs_get_acl
+ *
+ * inode_operations::get_acl
+ */
+struct posix_acl *ntfs_get_acl(struct inode *inode, int type)
+{
+ /* TODO: init_user_ns? */
+ return ntfs_get_acl_ex(&init_user_ns, inode, type, 0);
+}
+
+static noinline int ntfs_set_acl_ex(struct user_namespace *mnt_userns,
+ struct inode *inode, struct posix_acl *acl,
+ int type, int locked)
+{
+ const char *name;
+ size_t size, name_len;
+ void *value = NULL;
+ int err = 0;
+
+ if (S_ISLNK(inode->i_mode))
+ return -EOPNOTSUPP;
+
+ switch (type) {
+ case ACL_TYPE_ACCESS:
+ if (acl) {
+ umode_t mode = inode->i_mode;
+
+ err = posix_acl_equiv_mode(acl, &mode);
+ if (err < 0)
+ return err;
+
+ if (inode->i_mode != mode) {
+ inode->i_mode = mode;
+ mark_inode_dirty(inode);
+ }
+
+ if (!err) {
+ /*
+ * acl can be exactly represented in the
+ * traditional file mode permission bits
+ */
+ acl = NULL;
+ }
+ }
+ name = XATTR_NAME_POSIX_ACL_ACCESS;
+ name_len = sizeof(XATTR_NAME_POSIX_ACL_ACCESS) - 1;
+ break;
+
+ case ACL_TYPE_DEFAULT:
+ if (!S_ISDIR(inode->i_mode))
+ return acl ? -EACCES : 0;
+ name = XATTR_NAME_POSIX_ACL_DEFAULT;
+ name_len = sizeof(XATTR_NAME_POSIX_ACL_DEFAULT) - 1;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ if (!acl) {
+ size = 0;
+ value = NULL;
+ } else {
+ size = posix_acl_xattr_size(acl->a_count);
+ value = ntfs_malloc(size);
+ if (!value)
+ return -ENOMEM;
+
+ err = posix_acl_to_xattr(mnt_userns, acl, value, size);
+ if (err < 0)
+ goto out;
+ }
+
+ err = ntfs_set_ea(inode, name, name_len, value, size,
+ acl ? 0 : XATTR_REPLACE, locked);
+ if (!err)
+ set_cached_acl(inode, type, acl);
+
+out:
+ ntfs_free(value);
+
+ return err;
+}
+
+/*
+ * ntfs_set_acl
+ *
+ * inode_operations::set_acl
+ */
+int ntfs_set_acl(struct user_namespace *mnt_userns, struct inode *inode,
+ struct posix_acl *acl, int type)
+{
+ return ntfs_set_acl_ex(mnt_userns, inode, acl, type, 0);
+}
+
+static int ntfs_xattr_get_acl(struct user_namespace *mnt_userns,
+ struct inode *inode, int type, void *buffer,
+ size_t size)
+{
+ struct posix_acl *acl;
+ int err;
+
+ if (!(inode->i_sb->s_flags & SB_POSIXACL))
+ return -EOPNOTSUPP;
+
+ acl = ntfs_get_acl(inode, type);
+ if (IS_ERR(acl))
+ return PTR_ERR(acl);
+
+ if (!acl)
+ return -ENODATA;
+
+ err = posix_acl_to_xattr(mnt_userns, acl, buffer, size);
+ ntfs_posix_acl_release(acl);
+
+ return err;
+}
+
+static int ntfs_xattr_set_acl(struct user_namespace *mnt_userns,
+ struct inode *inode, int type, const void *value,
+ size_t size)
+{
+ struct posix_acl *acl;
+ int err;
+
+ if (!(inode->i_sb->s_flags & SB_POSIXACL))
+ return -EOPNOTSUPP;
+
+ if (!inode_owner_or_capable(mnt_userns, inode))
+ return -EPERM;
+
+ if (!value) {
+ acl = NULL;
+ } else {
+ acl = posix_acl_from_xattr(mnt_userns, value, size);
+ if (IS_ERR(acl))
+ return PTR_ERR(acl);
+
+ if (acl) {
+ err = posix_acl_valid(mnt_userns, acl);
+ if (err)
+ goto release_and_out;
+ }
+ }
+
+ err = ntfs_set_acl(mnt_userns, inode, acl, type);
+
+release_and_out:
+ ntfs_posix_acl_release(acl);
+ return err;
+}
+
+/*
+ * Initialize the ACLs of a new inode. Called from ntfs_create_inode.
+ */
+int ntfs_init_acl(struct user_namespace *mnt_userns, struct inode *inode,
+ struct inode *dir)
+{
+ struct posix_acl *default_acl, *acl;
+ int err;
+
+ /*
+ * TODO refactoring lock
+ * ni_lock(dir) ... -> posix_acl_create(dir,...) -> ntfs_get_acl -> ni_lock(dir)
+ */
+ inode->i_default_acl = NULL;
+
+ default_acl = ntfs_get_acl_ex(mnt_userns, dir, ACL_TYPE_DEFAULT, 1);
+
+ if (!default_acl || default_acl == ERR_PTR(-EOPNOTSUPP)) {
+ inode->i_mode &= ~current_umask();
+ err = 0;
+ goto out;
+ }
+
+ if (IS_ERR(default_acl)) {
+ err = PTR_ERR(default_acl);
+ goto out;
+ }
+
+ acl = default_acl;
+ err = __posix_acl_create(&acl, GFP_NOFS, &inode->i_mode);
+ if (err < 0)
+ goto out1;
+ if (!err) {
+ posix_acl_release(acl);
+ acl = NULL;
+ }
+
+ if (!S_ISDIR(inode->i_mode)) {
+ posix_acl_release(default_acl);
+ default_acl = NULL;
+ }
+
+ if (default_acl)
+ err = ntfs_set_acl_ex(mnt_userns, inode, default_acl,
+ ACL_TYPE_DEFAULT, 1);
+
+ if (!acl)
+ inode->i_acl = NULL;
+ else if (!err)
+ err = ntfs_set_acl_ex(mnt_userns, inode, acl, ACL_TYPE_ACCESS,
+ 1);
+
+ posix_acl_release(acl);
+out1:
+ posix_acl_release(default_acl);
+
+out:
+ return err;
+}
+#endif
+
+/*
+ * ntfs_acl_chmod
+ *
+ * helper for 'ntfs3_setattr'
+ */
+int ntfs_acl_chmod(struct user_namespace *mnt_userns, struct inode *inode)
+{
+ struct super_block *sb = inode->i_sb;
+
+ if (!(sb->s_flags & SB_POSIXACL))
+ return 0;
+
+ if (S_ISLNK(inode->i_mode))
+ return -EOPNOTSUPP;
+
+ return posix_acl_chmod(mnt_userns, inode, inode->i_mode);
+}
+
+/*
+ * ntfs_permission
+ *
+ * inode_operations::permission
+ */
+int ntfs_permission(struct user_namespace *mnt_userns, struct inode *inode,
+ int mask)
+{
+ if (ntfs_sb(inode->i_sb)->options.no_acs_rules) {
+ /* "no access rules" mode - allow all changes */
+ return 0;
+ }
+
+ return generic_permission(mnt_userns, inode, mask);
+}
+
+/*
+ * ntfs_listxattr
+ *
+ * inode_operations::listxattr
+ */
+ssize_t ntfs_listxattr(struct dentry *dentry, char *buffer, size_t size)
+{
+ struct inode *inode = d_inode(dentry);
+ struct ntfs_inode *ni = ntfs_i(inode);
+ ssize_t ret;
+
+ if (!(ni->ni_flags & NI_FLAG_EA)) {
+ /* no xattr in file */
+ return 0;
+ }
+
+ ni_lock(ni);
+
+ ret = ntfs_list_ea(ni, buffer, size);
+
+ ni_unlock(ni);
+
+ return ret;
+}
+
+static int ntfs_getxattr(const struct xattr_handler *handler, struct dentry *de,
+ struct inode *inode, const char *name, void *buffer,
+ size_t size)
+{
+ int err;
+ struct ntfs_inode *ni = ntfs_i(inode);
+ size_t name_len = strlen(name);
+
+ /* Dispatch request */
+ if (name_len == sizeof(SYSTEM_DOS_ATTRIB) - 1 &&
+ !memcmp(name, SYSTEM_DOS_ATTRIB, sizeof(SYSTEM_DOS_ATTRIB))) {
+ /* system.dos_attrib */
+ if (!buffer) {
+ err = sizeof(u8);
+ } else if (size < sizeof(u8)) {
+ err = -ENODATA;
+ } else {
+ err = sizeof(u8);
+ *(u8 *)buffer = le32_to_cpu(ni->std_fa);
+ }
+ goto out;
+ }
+
+ if (name_len == sizeof(SYSTEM_NTFS_ATTRIB) - 1 &&
+ !memcmp(name, SYSTEM_NTFS_ATTRIB, sizeof(SYSTEM_NTFS_ATTRIB))) {
+ /* system.ntfs_attrib */
+ if (!buffer) {
+ err = sizeof(u32);
+ } else if (size < sizeof(u32)) {
+ err = -ENODATA;
+ } else {
+ err = sizeof(u32);
+ *(u32 *)buffer = le32_to_cpu(ni->std_fa);
+ }
+ goto out;
+ }
+
+ if (name_len == sizeof(SYSTEM_NTFS_SECURITY) - 1 &&
+ !memcmp(name, SYSTEM_NTFS_SECURITY, sizeof(SYSTEM_NTFS_SECURITY))) {
+ /* system.ntfs_security*/
+ struct SECURITY_DESCRIPTOR_RELATIVE *sd = NULL;
+ size_t sd_size = 0;
+
+ if (!is_ntfs3(ni->mi.sbi)) {
+ /* we should get nt4 security */
+ err = -EINVAL;
+ goto out;
+ } else if (le32_to_cpu(ni->std_security_id) <
+ SECURITY_ID_FIRST) {
+ err = -ENOENT;
+ goto out;
+ }
+
+ err = ntfs_get_security_by_id(ni->mi.sbi, ni->std_security_id,
+ &sd, &sd_size);
+ if (err)
+ goto out;
+
+ if (!is_sd_valid(sd, sd_size)) {
+ ntfs_inode_warn(
+ inode,
+ "looks like you get incorrect security descriptor id=%u",
+ ni->std_security_id);
+ }
+
+ if (!buffer) {
+ err = sd_size;
+ } else if (size < sd_size) {
+ err = -ENODATA;
+ } else {
+ err = sd_size;
+ memcpy(buffer, sd, sd_size);
+ }
+ ntfs_free(sd);
+ goto out;
+ }
+
+#ifdef CONFIG_NTFS3_FS_POSIX_ACL
+ if ((name_len == sizeof(XATTR_NAME_POSIX_ACL_ACCESS) - 1 &&
+ !memcmp(name, XATTR_NAME_POSIX_ACL_ACCESS,
+ sizeof(XATTR_NAME_POSIX_ACL_ACCESS))) ||
+ (name_len == sizeof(XATTR_NAME_POSIX_ACL_DEFAULT) - 1 &&
+ !memcmp(name, XATTR_NAME_POSIX_ACL_DEFAULT,
+ sizeof(XATTR_NAME_POSIX_ACL_DEFAULT)))) {
+ /* TODO: init_user_ns? */
+ err = ntfs_xattr_get_acl(
+ &init_user_ns, inode,
+ name_len == sizeof(XATTR_NAME_POSIX_ACL_ACCESS) - 1
+ ? ACL_TYPE_ACCESS
+ : ACL_TYPE_DEFAULT,
+ buffer, size);
+ goto out;
+ }
+#endif
+ /* deal with ntfs extended attribute */
+ err = ntfs_get_ea(inode, name, name_len, buffer, size, NULL);
+
+out:
+ return err;
+}
+
+/*
+ * ntfs_setxattr
+ *
+ * inode_operations::setxattr
+ */
+static noinline int ntfs_setxattr(const struct xattr_handler *handler,
+ struct user_namespace *mnt_userns,
+ struct dentry *de, struct inode *inode,
+ const char *name, const void *value,
+ size_t size, int flags)
+{
+ int err = -EINVAL;
+ struct ntfs_inode *ni = ntfs_i(inode);
+ size_t name_len = strlen(name);
+ enum FILE_ATTRIBUTE new_fa;
+
+ /* Dispatch request */
+ if (name_len == sizeof(SYSTEM_DOS_ATTRIB) - 1 &&
+ !memcmp(name, SYSTEM_DOS_ATTRIB, sizeof(SYSTEM_DOS_ATTRIB))) {
+ if (sizeof(u8) != size)
+ goto out;
+ new_fa = cpu_to_le32(*(u8 *)value);
+ goto set_new_fa;
+ }
+
+ if (name_len == sizeof(SYSTEM_NTFS_ATTRIB) - 1 &&
+ !memcmp(name, SYSTEM_NTFS_ATTRIB, sizeof(SYSTEM_NTFS_ATTRIB))) {
+ if (size != sizeof(u32))
+ goto out;
+ new_fa = cpu_to_le32(*(u32 *)value);
+
+ if (S_ISREG(inode->i_mode)) {
+ /* Process compressed/sparsed in special way*/
+ ni_lock(ni);
+ err = ni_new_attr_flags(ni, new_fa);
+ ni_unlock(ni);
+ if (err)
+ goto out;
+ }
+set_new_fa:
+ /*
+ * Thanks Mark Harmstone:
+ * keep directory bit consistency
+ */
+ if (S_ISDIR(inode->i_mode))
+ new_fa |= FILE_ATTRIBUTE_DIRECTORY;
+ else
+ new_fa &= ~FILE_ATTRIBUTE_DIRECTORY;
+
+ if (ni->std_fa != new_fa) {
+ ni->std_fa = new_fa;
+ if (new_fa & FILE_ATTRIBUTE_READONLY)
+ inode->i_mode &= ~0222;
+ else
+ inode->i_mode |= 0222;
+ /* std attribute always in primary record */
+ ni->mi.dirty = true;
+ mark_inode_dirty(inode);
+ }
+ err = 0;
+
+ goto out;
+ }
+
+ if (name_len == sizeof(SYSTEM_NTFS_SECURITY) - 1 &&
+ !memcmp(name, SYSTEM_NTFS_SECURITY, sizeof(SYSTEM_NTFS_SECURITY))) {
+ /* system.ntfs_security*/
+ __le32 security_id;
+ bool inserted;
+ struct ATTR_STD_INFO5 *std;
+
+ if (!is_ntfs3(ni->mi.sbi)) {
+ /*
+ * we should replace ATTR_SECURE
+ * Skip this way cause it is nt4 feature
+ */
+ err = -EINVAL;
+ goto out;
+ }
+
+ if (!is_sd_valid(value, size)) {
+ err = -EINVAL;
+ ntfs_inode_warn(
+ inode,
+ "you try to set invalid security descriptor");
+ goto out;
+ }
+
+ err = ntfs_insert_security(ni->mi.sbi, value, size,
+ &security_id, &inserted);
+ if (err)
+ goto out;
+
+ ni_lock(ni);
+ std = ni_std5(ni);
+ if (!std) {
+ err = -EINVAL;
+ } else if (std->security_id != security_id) {
+ std->security_id = ni->std_security_id = security_id;
+ /* std attribute always in primary record */
+ ni->mi.dirty = true;
+ mark_inode_dirty(&ni->vfs_inode);
+ }
+ ni_unlock(ni);
+ goto out;
+ }
+
+#ifdef CONFIG_NTFS3_FS_POSIX_ACL
+ if ((name_len == sizeof(XATTR_NAME_POSIX_ACL_ACCESS) - 1 &&
+ !memcmp(name, XATTR_NAME_POSIX_ACL_ACCESS,
+ sizeof(XATTR_NAME_POSIX_ACL_ACCESS))) ||
+ (name_len == sizeof(XATTR_NAME_POSIX_ACL_DEFAULT) - 1 &&
+ !memcmp(name, XATTR_NAME_POSIX_ACL_DEFAULT,
+ sizeof(XATTR_NAME_POSIX_ACL_DEFAULT)))) {
+ err = ntfs_xattr_set_acl(
+ mnt_userns, inode,
+ name_len == sizeof(XATTR_NAME_POSIX_ACL_ACCESS) - 1
+ ? ACL_TYPE_ACCESS
+ : ACL_TYPE_DEFAULT,
+ value, size);
+ goto out;
+ }
+#endif
+ /* deal with ntfs extended attribute */
+ err = ntfs_set_ea(inode, name, name_len, value, size, flags, 0);
+
+out:
+ return err;
+}
+
+/*
+ * ntfs_save_wsl_perm
+ *
+ * save uid/gid/mode in xattr
+ */
+int ntfs_save_wsl_perm(struct inode *inode)
+{
+ int err;
+ __le32 value;
+
+ value = cpu_to_le32(i_uid_read(inode));
+ err = ntfs_set_ea(inode, "$LXUID", sizeof("$LXUID") - 1, &value,
+ sizeof(value), 0, 0);
+ if (err)
+ goto out;
+
+ value = cpu_to_le32(i_gid_read(inode));
+ err = ntfs_set_ea(inode, "$LXGID", sizeof("$LXGID") - 1, &value,
+ sizeof(value), 0, 0);
+ if (err)
+ goto out;
+
+ value = cpu_to_le32(inode->i_mode);
+ err = ntfs_set_ea(inode, "$LXMOD", sizeof("$LXMOD") - 1, &value,
+ sizeof(value), 0, 0);
+ if (err)
+ goto out;
+
+ if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
+ value = cpu_to_le32(inode->i_rdev);
+ err = ntfs_set_ea(inode, "$LXDEV", sizeof("$LXDEV") - 1, &value,
+ sizeof(value), 0, 0);
+ if (err)
+ goto out;
+ }
+
+out:
+ /* In case of error should we delete all WSL xattr? */
+ return err;
+}
+
+/*
+ * ntfs_get_wsl_perm
+ *
+ * get uid/gid/mode from xattr
+ * it is called from ntfs_iget5->ntfs_read_mft
+ */
+void ntfs_get_wsl_perm(struct inode *inode)
+{
+ size_t sz;
+ __le32 value[3];
+
+ if (ntfs_get_ea(inode, "$LXUID", sizeof("$LXUID") - 1, &value[0],
+ sizeof(value[0]), &sz) == sizeof(value[0]) &&
+ ntfs_get_ea(inode, "$LXGID", sizeof("$LXGID") - 1, &value[1],
+ sizeof(value[1]), &sz) == sizeof(value[1]) &&
+ ntfs_get_ea(inode, "$LXMOD", sizeof("$LXMOD") - 1, &value[2],
+ sizeof(value[2]), &sz) == sizeof(value[2])) {
+ i_uid_write(inode, (uid_t)le32_to_cpu(value[0]));
+ i_gid_write(inode, (gid_t)le32_to_cpu(value[1]));
+ inode->i_mode = le32_to_cpu(value[2]);
+
+ if (ntfs_get_ea(inode, "$LXDEV", sizeof("$$LXDEV") - 1,
+ &value[0], sizeof(value),
+ &sz) == sizeof(value[0])) {
+ inode->i_rdev = le32_to_cpu(value[0]);
+ }
+ }
+}
+
+static bool ntfs_xattr_user_list(struct dentry *dentry)
+{
+ return true;
+}
+
+// clang-format off
+static const struct xattr_handler ntfs_xattr_handler = {
+ .prefix = "",
+ .get = ntfs_getxattr,
+ .set = ntfs_setxattr,
+ .list = ntfs_xattr_user_list,
+};
+
+const struct xattr_handler *ntfs_xattr_handlers[] = {
+ &ntfs_xattr_handler,
+ NULL,
+};
+// clang-format on
--
2.30.0
1
0
From: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
mainline inclusion
from mainline-v5.15-rc1
commit 3f3b442b5ad2455507c9bfdacf39a3792eb3a6d0
category: feature
bugzilla:
https://gitee.com/openeuler/kernel/issues/I4G67J?from=project-issue
CVE: NA
----------------------------------------------------------------------
This adds bitmap
Signed-off-by: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
Signed-off-by: Yin Xiujiang <yinxiujiang(a)kylinos.cn>
---
fs/ntfs3/bitfunc.c | 135 ++++
fs/ntfs3/bitmap.c | 1519 ++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 1654 insertions(+)
create mode 100644 fs/ntfs3/bitfunc.c
create mode 100644 fs/ntfs3/bitmap.c
diff --git a/fs/ntfs3/bitfunc.c b/fs/ntfs3/bitfunc.c
new file mode 100644
index 000000000000..2de5faef2721
--- /dev/null
+++ b/fs/ntfs3/bitfunc.c
@@ -0,0 +1,135 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ *
+ * Copyright (C) 2019-2021 Paragon Software GmbH, All rights reserved.
+ *
+ */
+#include <linux/blkdev.h>
+#include <linux/buffer_head.h>
+#include <linux/fs.h>
+#include <linux/nls.h>
+
+#include "debug.h"
+#include "ntfs.h"
+#include "ntfs_fs.h"
+
+#define BITS_IN_SIZE_T (sizeof(size_t) * 8)
+
+/*
+ * fill_mask[i] - first i bits are '1' , i = 0,1,2,3,4,5,6,7,8
+ * fill_mask[i] = 0xFF >> (8-i)
+ */
+static const u8 fill_mask[] = { 0x00, 0x01, 0x03, 0x07, 0x0F,
+ 0x1F, 0x3F, 0x7F, 0xFF };
+
+/*
+ * zero_mask[i] - first i bits are '0' , i = 0,1,2,3,4,5,6,7,8
+ * zero_mask[i] = 0xFF << i
+ */
+static const u8 zero_mask[] = { 0xFF, 0xFE, 0xFC, 0xF8, 0xF0,
+ 0xE0, 0xC0, 0x80, 0x00 };
+
+/*
+ * are_bits_clear
+ *
+ * Returns true if all bits [bit, bit+nbits) are zeros "0"
+ */
+bool are_bits_clear(const ulong *lmap, size_t bit, size_t nbits)
+{
+ size_t pos = bit & 7;
+ const u8 *map = (u8 *)lmap + (bit >> 3);
+
+ if (pos) {
+ if (8 - pos >= nbits)
+ return !nbits || !(*map & fill_mask[pos + nbits] &
+ zero_mask[pos]);
+
+ if (*map++ & zero_mask[pos])
+ return false;
+ nbits -= 8 - pos;
+ }
+
+ pos = ((size_t)map) & (sizeof(size_t) - 1);
+ if (pos) {
+ pos = sizeof(size_t) - pos;
+ if (nbits >= pos * 8) {
+ for (nbits -= pos * 8; pos; pos--, map++) {
+ if (*map)
+ return false;
+ }
+ }
+ }
+
+ for (pos = nbits / BITS_IN_SIZE_T; pos; pos--, map += sizeof(size_t)) {
+ if (*((size_t *)map))
+ return false;
+ }
+
+ for (pos = (nbits % BITS_IN_SIZE_T) >> 3; pos; pos--, map++) {
+ if (*map)
+ return false;
+ }
+
+ pos = nbits & 7;
+ if (pos && (*map & fill_mask[pos]))
+ return false;
+
+ // All bits are zero
+ return true;
+}
+
+/*
+ * are_bits_set
+ *
+ * Returns true if all bits [bit, bit+nbits) are ones "1"
+ */
+bool are_bits_set(const ulong *lmap, size_t bit, size_t nbits)
+{
+ u8 mask;
+ size_t pos = bit & 7;
+ const u8 *map = (u8 *)lmap + (bit >> 3);
+
+ if (pos) {
+ if (8 - pos >= nbits) {
+ mask = fill_mask[pos + nbits] & zero_mask[pos];
+ return !nbits || (*map & mask) == mask;
+ }
+
+ mask = zero_mask[pos];
+ if ((*map++ & mask) != mask)
+ return false;
+ nbits -= 8 - pos;
+ }
+
+ pos = ((size_t)map) & (sizeof(size_t) - 1);
+ if (pos) {
+ pos = sizeof(size_t) - pos;
+ if (nbits >= pos * 8) {
+ for (nbits -= pos * 8; pos; pos--, map++) {
+ if (*map != 0xFF)
+ return false;
+ }
+ }
+ }
+
+ for (pos = nbits / BITS_IN_SIZE_T; pos; pos--, map += sizeof(size_t)) {
+ if (*((size_t *)map) != MINUS_ONE_T)
+ return false;
+ }
+
+ for (pos = (nbits % BITS_IN_SIZE_T) >> 3; pos; pos--, map++) {
+ if (*map != 0xFF)
+ return false;
+ }
+
+ pos = nbits & 7;
+ if (pos) {
+ u8 mask = fill_mask[pos];
+
+ if ((*map & mask) != mask)
+ return false;
+ }
+
+ // All bits are ones
+ return true;
+}
diff --git a/fs/ntfs3/bitmap.c b/fs/ntfs3/bitmap.c
new file mode 100644
index 000000000000..32aab0031221
--- /dev/null
+++ b/fs/ntfs3/bitmap.c
@@ -0,0 +1,1519 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ *
+ * Copyright (C) 2019-2021 Paragon Software GmbH, All rights reserved.
+ *
+ * This code builds two trees of free clusters extents.
+ * Trees are sorted by start of extent and by length of extent.
+ * NTFS_MAX_WND_EXTENTS defines the maximum number of elements in trees.
+ * In extreme case code reads on-disk bitmap to find free clusters
+ *
+ */
+
+#include <linux/blkdev.h>
+#include <linux/buffer_head.h>
+#include <linux/fs.h>
+#include <linux/nls.h>
+
+#include "debug.h"
+#include "ntfs.h"
+#include "ntfs_fs.h"
+
+/*
+ * Maximum number of extents in tree.
+ */
+#define NTFS_MAX_WND_EXTENTS (32u * 1024u)
+
+struct rb_node_key {
+ struct rb_node node;
+ size_t key;
+};
+
+/*
+ * Tree is sorted by start (key)
+ */
+struct e_node {
+ struct rb_node_key start; /* Tree sorted by start */
+ struct rb_node_key count; /* Tree sorted by len*/
+};
+
+static int wnd_rescan(struct wnd_bitmap *wnd);
+static struct buffer_head *wnd_map(struct wnd_bitmap *wnd, size_t iw);
+static bool wnd_is_free_hlp(struct wnd_bitmap *wnd, size_t bit, size_t bits);
+
+static struct kmem_cache *ntfs_enode_cachep;
+
+int __init ntfs3_init_bitmap(void)
+{
+ ntfs_enode_cachep =
+ kmem_cache_create("ntfs3_enode_cache", sizeof(struct e_node), 0,
+ SLAB_RECLAIM_ACCOUNT, NULL);
+ return ntfs_enode_cachep ? 0 : -ENOMEM;
+}
+
+void ntfs3_exit_bitmap(void)
+{
+ kmem_cache_destroy(ntfs_enode_cachep);
+}
+
+static inline u32 wnd_bits(const struct wnd_bitmap *wnd, size_t i)
+{
+ return i + 1 == wnd->nwnd ? wnd->bits_last : wnd->sb->s_blocksize * 8;
+}
+
+/*
+ * b_pos + b_len - biggest fragment
+ * Scan range [wpos wbits) window 'buf'
+ * Returns -1 if not found
+ */
+static size_t wnd_scan(const ulong *buf, size_t wbit, u32 wpos, u32 wend,
+ size_t to_alloc, size_t *prev_tail, size_t *b_pos,
+ size_t *b_len)
+{
+ while (wpos < wend) {
+ size_t free_len;
+ u32 free_bits, end;
+ u32 used = find_next_zero_bit(buf, wend, wpos);
+
+ if (used >= wend) {
+ if (*b_len < *prev_tail) {
+ *b_pos = wbit - *prev_tail;
+ *b_len = *prev_tail;
+ }
+
+ *prev_tail = 0;
+ return -1;
+ }
+
+ if (used > wpos) {
+ wpos = used;
+ if (*b_len < *prev_tail) {
+ *b_pos = wbit - *prev_tail;
+ *b_len = *prev_tail;
+ }
+
+ *prev_tail = 0;
+ }
+
+ /*
+ * Now we have a fragment [wpos, wend) staring with 0
+ */
+ end = wpos + to_alloc - *prev_tail;
+ free_bits = find_next_bit(buf, min(end, wend), wpos);
+
+ free_len = *prev_tail + free_bits - wpos;
+
+ if (*b_len < free_len) {
+ *b_pos = wbit + wpos - *prev_tail;
+ *b_len = free_len;
+ }
+
+ if (free_len >= to_alloc)
+ return wbit + wpos - *prev_tail;
+
+ if (free_bits >= wend) {
+ *prev_tail += free_bits - wpos;
+ return -1;
+ }
+
+ wpos = free_bits + 1;
+
+ *prev_tail = 0;
+ }
+
+ return -1;
+}
+
+/*
+ * wnd_close
+ *
+ * Frees all resources
+ */
+void wnd_close(struct wnd_bitmap *wnd)
+{
+ struct rb_node *node, *next;
+
+ ntfs_free(wnd->free_bits);
+ run_close(&wnd->run);
+
+ node = rb_first(&wnd->start_tree);
+
+ while (node) {
+ next = rb_next(node);
+ rb_erase(node, &wnd->start_tree);
+ kmem_cache_free(ntfs_enode_cachep,
+ rb_entry(node, struct e_node, start.node));
+ node = next;
+ }
+}
+
+static struct rb_node *rb_lookup(struct rb_root *root, size_t v)
+{
+ struct rb_node **p = &root->rb_node;
+ struct rb_node *r = NULL;
+
+ while (*p) {
+ struct rb_node_key *k;
+
+ k = rb_entry(*p, struct rb_node_key, node);
+ if (v < k->key) {
+ p = &(*p)->rb_left;
+ } else if (v > k->key) {
+ r = &k->node;
+ p = &(*p)->rb_right;
+ } else {
+ return &k->node;
+ }
+ }
+
+ return r;
+}
+
+/*
+ * rb_insert_count
+ *
+ * Helper function to insert special kind of 'count' tree
+ */
+static inline bool rb_insert_count(struct rb_root *root, struct e_node *e)
+{
+ struct rb_node **p = &root->rb_node;
+ struct rb_node *parent = NULL;
+ size_t e_ckey = e->count.key;
+ size_t e_skey = e->start.key;
+
+ while (*p) {
+ struct e_node *k =
+ rb_entry(parent = *p, struct e_node, count.node);
+
+ if (e_ckey > k->count.key) {
+ p = &(*p)->rb_left;
+ } else if (e_ckey < k->count.key) {
+ p = &(*p)->rb_right;
+ } else if (e_skey < k->start.key) {
+ p = &(*p)->rb_left;
+ } else if (e_skey > k->start.key) {
+ p = &(*p)->rb_right;
+ } else {
+ WARN_ON(1);
+ return false;
+ }
+ }
+
+ rb_link_node(&e->count.node, parent, p);
+ rb_insert_color(&e->count.node, root);
+ return true;
+}
+
+/*
+ * inline bool rb_insert_start
+ *
+ * Helper function to insert special kind of 'start' tree
+ */
+static inline bool rb_insert_start(struct rb_root *root, struct e_node *e)
+{
+ struct rb_node **p = &root->rb_node;
+ struct rb_node *parent = NULL;
+ size_t e_skey = e->start.key;
+
+ while (*p) {
+ struct e_node *k;
+
+ parent = *p;
+
+ k = rb_entry(parent, struct e_node, start.node);
+ if (e_skey < k->start.key) {
+ p = &(*p)->rb_left;
+ } else if (e_skey > k->start.key) {
+ p = &(*p)->rb_right;
+ } else {
+ WARN_ON(1);
+ return false;
+ }
+ }
+
+ rb_link_node(&e->start.node, parent, p);
+ rb_insert_color(&e->start.node, root);
+ return true;
+}
+
+/*
+ * wnd_add_free_ext
+ *
+ * adds a new extent of free space
+ * build = 1 when building tree
+ */
+static void wnd_add_free_ext(struct wnd_bitmap *wnd, size_t bit, size_t len,
+ bool build)
+{
+ struct e_node *e, *e0 = NULL;
+ size_t ib, end_in = bit + len;
+ struct rb_node *n;
+
+ if (build) {
+ /* Use extent_min to filter too short extents */
+ if (wnd->count >= NTFS_MAX_WND_EXTENTS &&
+ len <= wnd->extent_min) {
+ wnd->uptodated = -1;
+ return;
+ }
+ } else {
+ /* Try to find extent before 'bit' */
+ n = rb_lookup(&wnd->start_tree, bit);
+
+ if (!n) {
+ n = rb_first(&wnd->start_tree);
+ } else {
+ e = rb_entry(n, struct e_node, start.node);
+ n = rb_next(n);
+ if (e->start.key + e->count.key == bit) {
+ /* Remove left */
+ bit = e->start.key;
+ len += e->count.key;
+ rb_erase(&e->start.node, &wnd->start_tree);
+ rb_erase(&e->count.node, &wnd->count_tree);
+ wnd->count -= 1;
+ e0 = e;
+ }
+ }
+
+ while (n) {
+ size_t next_end;
+
+ e = rb_entry(n, struct e_node, start.node);
+ next_end = e->start.key + e->count.key;
+ if (e->start.key > end_in)
+ break;
+
+ /* Remove right */
+ n = rb_next(n);
+ len += next_end - end_in;
+ end_in = next_end;
+ rb_erase(&e->start.node, &wnd->start_tree);
+ rb_erase(&e->count.node, &wnd->count_tree);
+ wnd->count -= 1;
+
+ if (!e0)
+ e0 = e;
+ else
+ kmem_cache_free(ntfs_enode_cachep, e);
+ }
+
+ if (wnd->uptodated != 1) {
+ /* Check bits before 'bit' */
+ ib = wnd->zone_bit == wnd->zone_end ||
+ bit < wnd->zone_end
+ ? 0
+ : wnd->zone_end;
+
+ while (bit > ib && wnd_is_free_hlp(wnd, bit - 1, 1)) {
+ bit -= 1;
+ len += 1;
+ }
+
+ /* Check bits after 'end_in' */
+ ib = wnd->zone_bit == wnd->zone_end ||
+ end_in > wnd->zone_bit
+ ? wnd->nbits
+ : wnd->zone_bit;
+
+ while (end_in < ib && wnd_is_free_hlp(wnd, end_in, 1)) {
+ end_in += 1;
+ len += 1;
+ }
+ }
+ }
+ /* Insert new fragment */
+ if (wnd->count >= NTFS_MAX_WND_EXTENTS) {
+ if (e0)
+ kmem_cache_free(ntfs_enode_cachep, e0);
+
+ wnd->uptodated = -1;
+
+ /* Compare with smallest fragment */
+ n = rb_last(&wnd->count_tree);
+ e = rb_entry(n, struct e_node, count.node);
+ if (len <= e->count.key)
+ goto out; /* Do not insert small fragments */
+
+ if (build) {
+ struct e_node *e2;
+
+ n = rb_prev(n);
+ e2 = rb_entry(n, struct e_node, count.node);
+ /* smallest fragment will be 'e2->count.key' */
+ wnd->extent_min = e2->count.key;
+ }
+
+ /* Replace smallest fragment by new one */
+ rb_erase(&e->start.node, &wnd->start_tree);
+ rb_erase(&e->count.node, &wnd->count_tree);
+ wnd->count -= 1;
+ } else {
+ e = e0 ? e0 : kmem_cache_alloc(ntfs_enode_cachep, GFP_ATOMIC);
+ if (!e) {
+ wnd->uptodated = -1;
+ goto out;
+ }
+
+ if (build && len <= wnd->extent_min)
+ wnd->extent_min = len;
+ }
+ e->start.key = bit;
+ e->count.key = len;
+ if (len > wnd->extent_max)
+ wnd->extent_max = len;
+
+ rb_insert_start(&wnd->start_tree, e);
+ rb_insert_count(&wnd->count_tree, e);
+ wnd->count += 1;
+
+out:;
+}
+
+/*
+ * wnd_remove_free_ext
+ *
+ * removes a run from the cached free space
+ */
+static void wnd_remove_free_ext(struct wnd_bitmap *wnd, size_t bit, size_t len)
+{
+ struct rb_node *n, *n3;
+ struct e_node *e, *e3;
+ size_t end_in = bit + len;
+ size_t end3, end, new_key, new_len, max_new_len;
+
+ /* Try to find extent before 'bit' */
+ n = rb_lookup(&wnd->start_tree, bit);
+
+ if (!n)
+ return;
+
+ e = rb_entry(n, struct e_node, start.node);
+ end = e->start.key + e->count.key;
+
+ new_key = new_len = 0;
+ len = e->count.key;
+
+ /* Range [bit,end_in) must be inside 'e' or outside 'e' and 'n' */
+ if (e->start.key > bit)
+ ;
+ else if (end_in <= end) {
+ /* Range [bit,end_in) inside 'e' */
+ new_key = end_in;
+ new_len = end - end_in;
+ len = bit - e->start.key;
+ } else if (bit > end) {
+ bool bmax = false;
+
+ n3 = rb_next(n);
+
+ while (n3) {
+ e3 = rb_entry(n3, struct e_node, start.node);
+ if (e3->start.key >= end_in)
+ break;
+
+ if (e3->count.key == wnd->extent_max)
+ bmax = true;
+
+ end3 = e3->start.key + e3->count.key;
+ if (end3 > end_in) {
+ e3->start.key = end_in;
+ rb_erase(&e3->count.node, &wnd->count_tree);
+ e3->count.key = end3 - end_in;
+ rb_insert_count(&wnd->count_tree, e3);
+ break;
+ }
+
+ n3 = rb_next(n3);
+ rb_erase(&e3->start.node, &wnd->start_tree);
+ rb_erase(&e3->count.node, &wnd->count_tree);
+ wnd->count -= 1;
+ kmem_cache_free(ntfs_enode_cachep, e3);
+ }
+ if (!bmax)
+ return;
+ n3 = rb_first(&wnd->count_tree);
+ wnd->extent_max =
+ n3 ? rb_entry(n3, struct e_node, count.node)->count.key
+ : 0;
+ return;
+ }
+
+ if (e->count.key != wnd->extent_max) {
+ ;
+ } else if (rb_prev(&e->count.node)) {
+ ;
+ } else {
+ n3 = rb_next(&e->count.node);
+ max_new_len = len > new_len ? len : new_len;
+ if (!n3) {
+ wnd->extent_max = max_new_len;
+ } else {
+ e3 = rb_entry(n3, struct e_node, count.node);
+ wnd->extent_max = max(e3->count.key, max_new_len);
+ }
+ }
+
+ if (!len) {
+ if (new_len) {
+ e->start.key = new_key;
+ rb_erase(&e->count.node, &wnd->count_tree);
+ e->count.key = new_len;
+ rb_insert_count(&wnd->count_tree, e);
+ } else {
+ rb_erase(&e->start.node, &wnd->start_tree);
+ rb_erase(&e->count.node, &wnd->count_tree);
+ wnd->count -= 1;
+ kmem_cache_free(ntfs_enode_cachep, e);
+ }
+ goto out;
+ }
+ rb_erase(&e->count.node, &wnd->count_tree);
+ e->count.key = len;
+ rb_insert_count(&wnd->count_tree, e);
+
+ if (!new_len)
+ goto out;
+
+ if (wnd->count >= NTFS_MAX_WND_EXTENTS) {
+ wnd->uptodated = -1;
+
+ /* Get minimal extent */
+ e = rb_entry(rb_last(&wnd->count_tree), struct e_node,
+ count.node);
+ if (e->count.key > new_len)
+ goto out;
+
+ /* Replace minimum */
+ rb_erase(&e->start.node, &wnd->start_tree);
+ rb_erase(&e->count.node, &wnd->count_tree);
+ wnd->count -= 1;
+ } else {
+ e = kmem_cache_alloc(ntfs_enode_cachep, GFP_ATOMIC);
+ if (!e)
+ wnd->uptodated = -1;
+ }
+
+ if (e) {
+ e->start.key = new_key;
+ e->count.key = new_len;
+ rb_insert_start(&wnd->start_tree, e);
+ rb_insert_count(&wnd->count_tree, e);
+ wnd->count += 1;
+ }
+
+out:
+ if (!wnd->count && 1 != wnd->uptodated)
+ wnd_rescan(wnd);
+}
+
+/*
+ * wnd_rescan
+ *
+ * Scan all bitmap. used while initialization.
+ */
+static int wnd_rescan(struct wnd_bitmap *wnd)
+{
+ int err = 0;
+ size_t prev_tail = 0;
+ struct super_block *sb = wnd->sb;
+ struct ntfs_sb_info *sbi = sb->s_fs_info;
+ u64 lbo, len = 0;
+ u32 blocksize = sb->s_blocksize;
+ u8 cluster_bits = sbi->cluster_bits;
+ u32 wbits = 8 * sb->s_blocksize;
+ u32 used, frb;
+ const ulong *buf;
+ size_t wpos, wbit, iw, vbo;
+ struct buffer_head *bh = NULL;
+ CLST lcn, clen;
+
+ wnd->uptodated = 0;
+ wnd->extent_max = 0;
+ wnd->extent_min = MINUS_ONE_T;
+ wnd->total_zeroes = 0;
+
+ vbo = 0;
+
+ for (iw = 0; iw < wnd->nwnd; iw++) {
+ if (iw + 1 == wnd->nwnd)
+ wbits = wnd->bits_last;
+
+ if (wnd->inited) {
+ if (!wnd->free_bits[iw]) {
+ /* all ones */
+ if (prev_tail) {
+ wnd_add_free_ext(wnd,
+ vbo * 8 - prev_tail,
+ prev_tail, true);
+ prev_tail = 0;
+ }
+ goto next_wnd;
+ }
+ if (wbits == wnd->free_bits[iw]) {
+ /* all zeroes */
+ prev_tail += wbits;
+ wnd->total_zeroes += wbits;
+ goto next_wnd;
+ }
+ }
+
+ if (!len) {
+ u32 off = vbo & sbi->cluster_mask;
+
+ if (!run_lookup_entry(&wnd->run, vbo >> cluster_bits,
+ &lcn, &clen, NULL)) {
+ err = -ENOENT;
+ goto out;
+ }
+
+ lbo = ((u64)lcn << cluster_bits) + off;
+ len = ((u64)clen << cluster_bits) - off;
+ }
+
+ bh = ntfs_bread(sb, lbo >> sb->s_blocksize_bits);
+ if (!bh) {
+ err = -EIO;
+ goto out;
+ }
+
+ buf = (ulong *)bh->b_data;
+
+ used = __bitmap_weight(buf, wbits);
+ if (used < wbits) {
+ frb = wbits - used;
+ wnd->free_bits[iw] = frb;
+ wnd->total_zeroes += frb;
+ }
+
+ wpos = 0;
+ wbit = vbo * 8;
+
+ if (wbit + wbits > wnd->nbits)
+ wbits = wnd->nbits - wbit;
+
+ do {
+ used = find_next_zero_bit(buf, wbits, wpos);
+
+ if (used > wpos && prev_tail) {
+ wnd_add_free_ext(wnd, wbit + wpos - prev_tail,
+ prev_tail, true);
+ prev_tail = 0;
+ }
+
+ wpos = used;
+
+ if (wpos >= wbits) {
+ /* No free blocks */
+ prev_tail = 0;
+ break;
+ }
+
+ frb = find_next_bit(buf, wbits, wpos);
+ if (frb >= wbits) {
+ /* keep last free block */
+ prev_tail += frb - wpos;
+ break;
+ }
+
+ wnd_add_free_ext(wnd, wbit + wpos - prev_tail,
+ frb + prev_tail - wpos, true);
+
+ /* Skip free block and first '1' */
+ wpos = frb + 1;
+ /* Reset previous tail */
+ prev_tail = 0;
+ } while (wpos < wbits);
+
+next_wnd:
+
+ if (bh)
+ put_bh(bh);
+ bh = NULL;
+
+ vbo += blocksize;
+ if (len) {
+ len -= blocksize;
+ lbo += blocksize;
+ }
+ }
+
+ /* Add last block */
+ if (prev_tail)
+ wnd_add_free_ext(wnd, wnd->nbits - prev_tail, prev_tail, true);
+
+ /*
+ * Before init cycle wnd->uptodated was 0
+ * If any errors or limits occurs while initialization then
+ * wnd->uptodated will be -1
+ * If 'uptodated' is still 0 then Tree is really updated
+ */
+ if (!wnd->uptodated)
+ wnd->uptodated = 1;
+
+ if (wnd->zone_bit != wnd->zone_end) {
+ size_t zlen = wnd->zone_end - wnd->zone_bit;
+
+ wnd->zone_end = wnd->zone_bit;
+ wnd_zone_set(wnd, wnd->zone_bit, zlen);
+ }
+
+out:
+ return err;
+}
+
+/*
+ * wnd_init
+ */
+int wnd_init(struct wnd_bitmap *wnd, struct super_block *sb, size_t nbits)
+{
+ int err;
+ u32 blocksize = sb->s_blocksize;
+ u32 wbits = blocksize * 8;
+
+ init_rwsem(&wnd->rw_lock);
+
+ wnd->sb = sb;
+ wnd->nbits = nbits;
+ wnd->total_zeroes = nbits;
+ wnd->extent_max = MINUS_ONE_T;
+ wnd->zone_bit = wnd->zone_end = 0;
+ wnd->nwnd = bytes_to_block(sb, bitmap_size(nbits));
+ wnd->bits_last = nbits & (wbits - 1);
+ if (!wnd->bits_last)
+ wnd->bits_last = wbits;
+
+ wnd->free_bits = ntfs_zalloc(wnd->nwnd * sizeof(u16));
+ if (!wnd->free_bits)
+ return -ENOMEM;
+
+ err = wnd_rescan(wnd);
+ if (err)
+ return err;
+
+ wnd->inited = true;
+
+ return 0;
+}
+
+/*
+ * wnd_map
+ *
+ * call sb_bread for requested window
+ */
+static struct buffer_head *wnd_map(struct wnd_bitmap *wnd, size_t iw)
+{
+ size_t vbo;
+ CLST lcn, clen;
+ struct super_block *sb = wnd->sb;
+ struct ntfs_sb_info *sbi;
+ struct buffer_head *bh;
+ u64 lbo;
+
+ sbi = sb->s_fs_info;
+ vbo = (u64)iw << sb->s_blocksize_bits;
+
+ if (!run_lookup_entry(&wnd->run, vbo >> sbi->cluster_bits, &lcn, &clen,
+ NULL)) {
+ return ERR_PTR(-ENOENT);
+ }
+
+ lbo = ((u64)lcn << sbi->cluster_bits) + (vbo & sbi->cluster_mask);
+
+ bh = ntfs_bread(wnd->sb, lbo >> sb->s_blocksize_bits);
+ if (!bh)
+ return ERR_PTR(-EIO);
+
+ return bh;
+}
+
+/*
+ * wnd_set_free
+ *
+ * Marks the bits range from bit to bit + bits as free
+ */
+int wnd_set_free(struct wnd_bitmap *wnd, size_t bit, size_t bits)
+{
+ int err = 0;
+ struct super_block *sb = wnd->sb;
+ size_t bits0 = bits;
+ u32 wbits = 8 * sb->s_blocksize;
+ size_t iw = bit >> (sb->s_blocksize_bits + 3);
+ u32 wbit = bit & (wbits - 1);
+ struct buffer_head *bh;
+
+ while (iw < wnd->nwnd && bits) {
+ u32 tail, op;
+ ulong *buf;
+
+ if (iw + 1 == wnd->nwnd)
+ wbits = wnd->bits_last;
+
+ tail = wbits - wbit;
+ op = tail < bits ? tail : bits;
+
+ bh = wnd_map(wnd, iw);
+ if (IS_ERR(bh)) {
+ err = PTR_ERR(bh);
+ break;
+ }
+
+ buf = (ulong *)bh->b_data;
+
+ lock_buffer(bh);
+
+ __bitmap_clear(buf, wbit, op);
+
+ wnd->free_bits[iw] += op;
+
+ set_buffer_uptodate(bh);
+ mark_buffer_dirty(bh);
+ unlock_buffer(bh);
+ put_bh(bh);
+
+ wnd->total_zeroes += op;
+ bits -= op;
+ wbit = 0;
+ iw += 1;
+ }
+
+ wnd_add_free_ext(wnd, bit, bits0, false);
+
+ return err;
+}
+
+/*
+ * wnd_set_used
+ *
+ * Marks the bits range from bit to bit + bits as used
+ */
+int wnd_set_used(struct wnd_bitmap *wnd, size_t bit, size_t bits)
+{
+ int err = 0;
+ struct super_block *sb = wnd->sb;
+ size_t bits0 = bits;
+ size_t iw = bit >> (sb->s_blocksize_bits + 3);
+ u32 wbits = 8 * sb->s_blocksize;
+ u32 wbit = bit & (wbits - 1);
+ struct buffer_head *bh;
+
+ while (iw < wnd->nwnd && bits) {
+ u32 tail, op;
+ ulong *buf;
+
+ if (unlikely(iw + 1 == wnd->nwnd))
+ wbits = wnd->bits_last;
+
+ tail = wbits - wbit;
+ op = tail < bits ? tail : bits;
+
+ bh = wnd_map(wnd, iw);
+ if (IS_ERR(bh)) {
+ err = PTR_ERR(bh);
+ break;
+ }
+ buf = (ulong *)bh->b_data;
+
+ lock_buffer(bh);
+
+ __bitmap_set(buf, wbit, op);
+ wnd->free_bits[iw] -= op;
+
+ set_buffer_uptodate(bh);
+ mark_buffer_dirty(bh);
+ unlock_buffer(bh);
+ put_bh(bh);
+
+ wnd->total_zeroes -= op;
+ bits -= op;
+ wbit = 0;
+ iw += 1;
+ }
+
+ if (!RB_EMPTY_ROOT(&wnd->start_tree))
+ wnd_remove_free_ext(wnd, bit, bits0);
+
+ return err;
+}
+
+/*
+ * wnd_is_free_hlp
+ *
+ * Returns true if all clusters [bit, bit+bits) are free (bitmap only)
+ */
+static bool wnd_is_free_hlp(struct wnd_bitmap *wnd, size_t bit, size_t bits)
+{
+ struct super_block *sb = wnd->sb;
+ size_t iw = bit >> (sb->s_blocksize_bits + 3);
+ u32 wbits = 8 * sb->s_blocksize;
+ u32 wbit = bit & (wbits - 1);
+
+ while (iw < wnd->nwnd && bits) {
+ u32 tail, op;
+
+ if (unlikely(iw + 1 == wnd->nwnd))
+ wbits = wnd->bits_last;
+
+ tail = wbits - wbit;
+ op = tail < bits ? tail : bits;
+
+ if (wbits != wnd->free_bits[iw]) {
+ bool ret;
+ struct buffer_head *bh = wnd_map(wnd, iw);
+
+ if (IS_ERR(bh))
+ return false;
+
+ ret = are_bits_clear((ulong *)bh->b_data, wbit, op);
+
+ put_bh(bh);
+ if (!ret)
+ return false;
+ }
+
+ bits -= op;
+ wbit = 0;
+ iw += 1;
+ }
+
+ return true;
+}
+
+/*
+ * wnd_is_free
+ *
+ * Returns true if all clusters [bit, bit+bits) are free
+ */
+bool wnd_is_free(struct wnd_bitmap *wnd, size_t bit, size_t bits)
+{
+ bool ret;
+ struct rb_node *n;
+ size_t end;
+ struct e_node *e;
+
+ if (RB_EMPTY_ROOT(&wnd->start_tree))
+ goto use_wnd;
+
+ n = rb_lookup(&wnd->start_tree, bit);
+ if (!n)
+ goto use_wnd;
+
+ e = rb_entry(n, struct e_node, start.node);
+
+ end = e->start.key + e->count.key;
+
+ if (bit < end && bit + bits <= end)
+ return true;
+
+use_wnd:
+ ret = wnd_is_free_hlp(wnd, bit, bits);
+
+ return ret;
+}
+
+/*
+ * wnd_is_used
+ *
+ * Returns true if all clusters [bit, bit+bits) are used
+ */
+bool wnd_is_used(struct wnd_bitmap *wnd, size_t bit, size_t bits)
+{
+ bool ret = false;
+ struct super_block *sb = wnd->sb;
+ size_t iw = bit >> (sb->s_blocksize_bits + 3);
+ u32 wbits = 8 * sb->s_blocksize;
+ u32 wbit = bit & (wbits - 1);
+ size_t end;
+ struct rb_node *n;
+ struct e_node *e;
+
+ if (RB_EMPTY_ROOT(&wnd->start_tree))
+ goto use_wnd;
+
+ end = bit + bits;
+ n = rb_lookup(&wnd->start_tree, end - 1);
+ if (!n)
+ goto use_wnd;
+
+ e = rb_entry(n, struct e_node, start.node);
+ if (e->start.key + e->count.key > bit)
+ return false;
+
+use_wnd:
+ while (iw < wnd->nwnd && bits) {
+ u32 tail, op;
+
+ if (unlikely(iw + 1 == wnd->nwnd))
+ wbits = wnd->bits_last;
+
+ tail = wbits - wbit;
+ op = tail < bits ? tail : bits;
+
+ if (wnd->free_bits[iw]) {
+ bool ret;
+ struct buffer_head *bh = wnd_map(wnd, iw);
+
+ if (IS_ERR(bh))
+ goto out;
+
+ ret = are_bits_set((ulong *)bh->b_data, wbit, op);
+ put_bh(bh);
+ if (!ret)
+ goto out;
+ }
+
+ bits -= op;
+ wbit = 0;
+ iw += 1;
+ }
+ ret = true;
+
+out:
+ return ret;
+}
+
+/*
+ * wnd_find
+ * - flags - BITMAP_FIND_XXX flags
+ *
+ * looks for free space
+ * Returns 0 if not found
+ */
+size_t wnd_find(struct wnd_bitmap *wnd, size_t to_alloc, size_t hint,
+ size_t flags, size_t *allocated)
+{
+ struct super_block *sb;
+ u32 wbits, wpos, wzbit, wzend;
+ size_t fnd, max_alloc, b_len, b_pos;
+ size_t iw, prev_tail, nwnd, wbit, ebit, zbit, zend;
+ size_t to_alloc0 = to_alloc;
+ const ulong *buf;
+ const struct e_node *e;
+ const struct rb_node *pr, *cr;
+ u8 log2_bits;
+ bool fbits_valid;
+ struct buffer_head *bh;
+
+ /* fast checking for available free space */
+ if (flags & BITMAP_FIND_FULL) {
+ size_t zeroes = wnd_zeroes(wnd);
+
+ zeroes -= wnd->zone_end - wnd->zone_bit;
+ if (zeroes < to_alloc0)
+ goto no_space;
+
+ if (to_alloc0 > wnd->extent_max)
+ goto no_space;
+ } else {
+ if (to_alloc > wnd->extent_max)
+ to_alloc = wnd->extent_max;
+ }
+
+ if (wnd->zone_bit <= hint && hint < wnd->zone_end)
+ hint = wnd->zone_end;
+
+ max_alloc = wnd->nbits;
+ b_len = b_pos = 0;
+
+ if (hint >= max_alloc)
+ hint = 0;
+
+ if (RB_EMPTY_ROOT(&wnd->start_tree)) {
+ if (wnd->uptodated == 1) {
+ /* extents tree is updated -> no free space */
+ goto no_space;
+ }
+ goto scan_bitmap;
+ }
+
+ e = NULL;
+ if (!hint)
+ goto allocate_biggest;
+
+ /* Use hint: enumerate extents by start >= hint */
+ pr = NULL;
+ cr = wnd->start_tree.rb_node;
+
+ for (;;) {
+ e = rb_entry(cr, struct e_node, start.node);
+
+ if (e->start.key == hint)
+ break;
+
+ if (e->start.key < hint) {
+ pr = cr;
+ cr = cr->rb_right;
+ if (!cr)
+ break;
+ continue;
+ }
+
+ cr = cr->rb_left;
+ if (!cr) {
+ e = pr ? rb_entry(pr, struct e_node, start.node) : NULL;
+ break;
+ }
+ }
+
+ if (!e)
+ goto allocate_biggest;
+
+ if (e->start.key + e->count.key > hint) {
+ /* We have found extension with 'hint' inside */
+ size_t len = e->start.key + e->count.key - hint;
+
+ if (len >= to_alloc && hint + to_alloc <= max_alloc) {
+ fnd = hint;
+ goto found;
+ }
+
+ if (!(flags & BITMAP_FIND_FULL)) {
+ if (len > to_alloc)
+ len = to_alloc;
+
+ if (hint + len <= max_alloc) {
+ fnd = hint;
+ to_alloc = len;
+ goto found;
+ }
+ }
+ }
+
+allocate_biggest:
+ /* Allocate from biggest free extent */
+ e = rb_entry(rb_first(&wnd->count_tree), struct e_node, count.node);
+ if (e->count.key != wnd->extent_max)
+ wnd->extent_max = e->count.key;
+
+ if (e->count.key < max_alloc) {
+ if (e->count.key >= to_alloc) {
+ ;
+ } else if (flags & BITMAP_FIND_FULL) {
+ if (e->count.key < to_alloc0) {
+ /* Biggest free block is less then requested */
+ goto no_space;
+ }
+ to_alloc = e->count.key;
+ } else if (-1 != wnd->uptodated) {
+ to_alloc = e->count.key;
+ } else {
+ /* Check if we can use more bits */
+ size_t op, max_check;
+ struct rb_root start_tree;
+
+ memcpy(&start_tree, &wnd->start_tree,
+ sizeof(struct rb_root));
+ memset(&wnd->start_tree, 0, sizeof(struct rb_root));
+
+ max_check = e->start.key + to_alloc;
+ if (max_check > max_alloc)
+ max_check = max_alloc;
+ for (op = e->start.key + e->count.key; op < max_check;
+ op++) {
+ if (!wnd_is_free(wnd, op, 1))
+ break;
+ }
+ memcpy(&wnd->start_tree, &start_tree,
+ sizeof(struct rb_root));
+ to_alloc = op - e->start.key;
+ }
+
+ /* Prepare to return */
+ fnd = e->start.key;
+ if (e->start.key + to_alloc > max_alloc)
+ to_alloc = max_alloc - e->start.key;
+ goto found;
+ }
+
+ if (wnd->uptodated == 1) {
+ /* extents tree is updated -> no free space */
+ goto no_space;
+ }
+
+ b_len = e->count.key;
+ b_pos = e->start.key;
+
+scan_bitmap:
+ sb = wnd->sb;
+ log2_bits = sb->s_blocksize_bits + 3;
+
+ /* At most two ranges [hint, max_alloc) + [0, hint) */
+Again:
+
+ /* TODO: optimize request for case nbits > wbits */
+ iw = hint >> log2_bits;
+ wbits = sb->s_blocksize * 8;
+ wpos = hint & (wbits - 1);
+ prev_tail = 0;
+ fbits_valid = true;
+
+ if (max_alloc == wnd->nbits) {
+ nwnd = wnd->nwnd;
+ } else {
+ size_t t = max_alloc + wbits - 1;
+
+ nwnd = likely(t > max_alloc) ? (t >> log2_bits) : wnd->nwnd;
+ }
+
+ /* Enumerate all windows */
+ for (; iw < nwnd; iw++) {
+ wbit = iw << log2_bits;
+
+ if (!wnd->free_bits[iw]) {
+ if (prev_tail > b_len) {
+ b_pos = wbit - prev_tail;
+ b_len = prev_tail;
+ }
+
+ /* Skip full used window */
+ prev_tail = 0;
+ wpos = 0;
+ continue;
+ }
+
+ if (unlikely(iw + 1 == nwnd)) {
+ if (max_alloc == wnd->nbits) {
+ wbits = wnd->bits_last;
+ } else {
+ size_t t = max_alloc & (wbits - 1);
+
+ if (t) {
+ wbits = t;
+ fbits_valid = false;
+ }
+ }
+ }
+
+ if (wnd->zone_end > wnd->zone_bit) {
+ ebit = wbit + wbits;
+ zbit = max(wnd->zone_bit, wbit);
+ zend = min(wnd->zone_end, ebit);
+
+ /* Here we have a window [wbit, ebit) and zone [zbit, zend) */
+ if (zend <= zbit) {
+ /* Zone does not overlap window */
+ } else {
+ wzbit = zbit - wbit;
+ wzend = zend - wbit;
+
+ /* Zone overlaps window */
+ if (wnd->free_bits[iw] == wzend - wzbit) {
+ prev_tail = 0;
+ wpos = 0;
+ continue;
+ }
+
+ /* Scan two ranges window: [wbit, zbit) and [zend, ebit) */
+ bh = wnd_map(wnd, iw);
+
+ if (IS_ERR(bh)) {
+ /* TODO: error */
+ prev_tail = 0;
+ wpos = 0;
+ continue;
+ }
+
+ buf = (ulong *)bh->b_data;
+
+ /* Scan range [wbit, zbit) */
+ if (wpos < wzbit) {
+ /* Scan range [wpos, zbit) */
+ fnd = wnd_scan(buf, wbit, wpos, wzbit,
+ to_alloc, &prev_tail,
+ &b_pos, &b_len);
+ if (fnd != MINUS_ONE_T) {
+ put_bh(bh);
+ goto found;
+ }
+ }
+
+ prev_tail = 0;
+
+ /* Scan range [zend, ebit) */
+ if (wzend < wbits) {
+ fnd = wnd_scan(buf, wbit,
+ max(wzend, wpos), wbits,
+ to_alloc, &prev_tail,
+ &b_pos, &b_len);
+ if (fnd != MINUS_ONE_T) {
+ put_bh(bh);
+ goto found;
+ }
+ }
+
+ wpos = 0;
+ put_bh(bh);
+ continue;
+ }
+ }
+
+ /* Current window does not overlap zone */
+ if (!wpos && fbits_valid && wnd->free_bits[iw] == wbits) {
+ /* window is empty */
+ if (prev_tail + wbits >= to_alloc) {
+ fnd = wbit + wpos - prev_tail;
+ goto found;
+ }
+
+ /* Increase 'prev_tail' and process next window */
+ prev_tail += wbits;
+ wpos = 0;
+ continue;
+ }
+
+ /* read window */
+ bh = wnd_map(wnd, iw);
+ if (IS_ERR(bh)) {
+ // TODO: error
+ prev_tail = 0;
+ wpos = 0;
+ continue;
+ }
+
+ buf = (ulong *)bh->b_data;
+
+ /* Scan range [wpos, eBits) */
+ fnd = wnd_scan(buf, wbit, wpos, wbits, to_alloc, &prev_tail,
+ &b_pos, &b_len);
+ put_bh(bh);
+ if (fnd != MINUS_ONE_T)
+ goto found;
+ }
+
+ if (b_len < prev_tail) {
+ /* The last fragment */
+ b_len = prev_tail;
+ b_pos = max_alloc - prev_tail;
+ }
+
+ if (hint) {
+ /*
+ * We have scanned range [hint max_alloc)
+ * Prepare to scan range [0 hint + to_alloc)
+ */
+ size_t nextmax = hint + to_alloc;
+
+ if (likely(nextmax >= hint) && nextmax < max_alloc)
+ max_alloc = nextmax;
+ hint = 0;
+ goto Again;
+ }
+
+ if (!b_len)
+ goto no_space;
+
+ wnd->extent_max = b_len;
+
+ if (flags & BITMAP_FIND_FULL)
+ goto no_space;
+
+ fnd = b_pos;
+ to_alloc = b_len;
+
+found:
+ if (flags & BITMAP_FIND_MARK_AS_USED) {
+ /* TODO optimize remove extent (pass 'e'?) */
+ if (wnd_set_used(wnd, fnd, to_alloc))
+ goto no_space;
+ } else if (wnd->extent_max != MINUS_ONE_T &&
+ to_alloc > wnd->extent_max) {
+ wnd->extent_max = to_alloc;
+ }
+
+ *allocated = fnd;
+ return to_alloc;
+
+no_space:
+ return 0;
+}
+
+/*
+ * wnd_extend
+ *
+ * Extend bitmap ($MFT bitmap)
+ */
+int wnd_extend(struct wnd_bitmap *wnd, size_t new_bits)
+{
+ int err;
+ struct super_block *sb = wnd->sb;
+ struct ntfs_sb_info *sbi = sb->s_fs_info;
+ u32 blocksize = sb->s_blocksize;
+ u32 wbits = blocksize * 8;
+ u32 b0, new_last;
+ size_t bits, iw, new_wnd;
+ size_t old_bits = wnd->nbits;
+ u16 *new_free;
+
+ if (new_bits <= old_bits)
+ return -EINVAL;
+
+ /* align to 8 byte boundary */
+ new_wnd = bytes_to_block(sb, bitmap_size(new_bits));
+ new_last = new_bits & (wbits - 1);
+ if (!new_last)
+ new_last = wbits;
+
+ if (new_wnd != wnd->nwnd) {
+ new_free = ntfs_malloc(new_wnd * sizeof(u16));
+ if (!new_free)
+ return -ENOMEM;
+
+ if (new_free != wnd->free_bits)
+ memcpy(new_free, wnd->free_bits,
+ wnd->nwnd * sizeof(short));
+ memset(new_free + wnd->nwnd, 0,
+ (new_wnd - wnd->nwnd) * sizeof(short));
+ ntfs_free(wnd->free_bits);
+ wnd->free_bits = new_free;
+ }
+
+ /* Zero bits [old_bits,new_bits) */
+ bits = new_bits - old_bits;
+ b0 = old_bits & (wbits - 1);
+
+ for (iw = old_bits >> (sb->s_blocksize_bits + 3); bits; iw += 1) {
+ u32 op;
+ size_t frb;
+ u64 vbo, lbo, bytes;
+ struct buffer_head *bh;
+ ulong *buf;
+
+ if (iw + 1 == new_wnd)
+ wbits = new_last;
+
+ op = b0 + bits > wbits ? wbits - b0 : bits;
+ vbo = (u64)iw * blocksize;
+
+ err = ntfs_vbo_to_lbo(sbi, &wnd->run, vbo, &lbo, &bytes);
+ if (err)
+ break;
+
+ bh = ntfs_bread(sb, lbo >> sb->s_blocksize_bits);
+ if (!bh)
+ return -EIO;
+
+ lock_buffer(bh);
+ buf = (ulong *)bh->b_data;
+
+ __bitmap_clear(buf, b0, blocksize * 8 - b0);
+ frb = wbits - __bitmap_weight(buf, wbits);
+ wnd->total_zeroes += frb - wnd->free_bits[iw];
+ wnd->free_bits[iw] = frb;
+
+ set_buffer_uptodate(bh);
+ mark_buffer_dirty(bh);
+ unlock_buffer(bh);
+ /*err = sync_dirty_buffer(bh);*/
+
+ b0 = 0;
+ bits -= op;
+ }
+
+ wnd->nbits = new_bits;
+ wnd->nwnd = new_wnd;
+ wnd->bits_last = new_last;
+
+ wnd_add_free_ext(wnd, old_bits, new_bits - old_bits, false);
+
+ return 0;
+}
+
+/*
+ * wnd_zone_set
+ */
+void wnd_zone_set(struct wnd_bitmap *wnd, size_t lcn, size_t len)
+{
+ size_t zlen;
+
+ zlen = wnd->zone_end - wnd->zone_bit;
+ if (zlen)
+ wnd_add_free_ext(wnd, wnd->zone_bit, zlen, false);
+
+ if (!RB_EMPTY_ROOT(&wnd->start_tree) && len)
+ wnd_remove_free_ext(wnd, lcn, len);
+
+ wnd->zone_bit = lcn;
+ wnd->zone_end = lcn + len;
+}
+
+int ntfs_trim_fs(struct ntfs_sb_info *sbi, struct fstrim_range *range)
+{
+ int err = 0;
+ struct super_block *sb = sbi->sb;
+ struct wnd_bitmap *wnd = &sbi->used.bitmap;
+ u32 wbits = 8 * sb->s_blocksize;
+ CLST len = 0, lcn = 0, done = 0;
+ CLST minlen = bytes_to_cluster(sbi, range->minlen);
+ CLST lcn_from = bytes_to_cluster(sbi, range->start);
+ size_t iw = lcn_from >> (sb->s_blocksize_bits + 3);
+ u32 wbit = lcn_from & (wbits - 1);
+ const ulong *buf;
+ CLST lcn_to;
+
+ if (!minlen)
+ minlen = 1;
+
+ if (range->len == (u64)-1)
+ lcn_to = wnd->nbits;
+ else
+ lcn_to = bytes_to_cluster(sbi, range->start + range->len);
+
+ down_read_nested(&wnd->rw_lock, BITMAP_MUTEX_CLUSTERS);
+
+ for (; iw < wnd->nbits; iw++, wbit = 0) {
+ CLST lcn_wnd = iw * wbits;
+ struct buffer_head *bh;
+
+ if (lcn_wnd > lcn_to)
+ break;
+
+ if (!wnd->free_bits[iw])
+ continue;
+
+ if (iw + 1 == wnd->nwnd)
+ wbits = wnd->bits_last;
+
+ if (lcn_wnd + wbits > lcn_to)
+ wbits = lcn_to - lcn_wnd;
+
+ bh = wnd_map(wnd, iw);
+ if (IS_ERR(bh)) {
+ err = PTR_ERR(bh);
+ break;
+ }
+
+ buf = (ulong *)bh->b_data;
+
+ for (; wbit < wbits; wbit++) {
+ if (!test_bit(wbit, buf)) {
+ if (!len)
+ lcn = lcn_wnd + wbit;
+ len += 1;
+ continue;
+ }
+ if (len >= minlen) {
+ err = ntfs_discard(sbi, lcn, len);
+ if (err)
+ goto out;
+ done += len;
+ }
+ len = 0;
+ }
+ put_bh(bh);
+ }
+
+ /* Process the last fragment */
+ if (len >= minlen) {
+ err = ntfs_discard(sbi, lcn, len);
+ if (err)
+ goto out;
+ done += len;
+ }
+
+out:
+ range->len = (u64)done << sbi->cluster_bits;
+
+ up_read(&wnd->rw_lock);
+
+ return err;
+}
--
2.30.0
1
0
08 Dec '21
From: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
mainline inclusion
from mainline-v5.15-rc1
commit 82cae269cfa953032fbb8980a7d554d60fb00b17
category: feature
bugzilla:
https://gitee.com/openeuler/kernel/issues/I4G67J?from=project-issue
CVE: NA
----------------------------------------------------------------------
This adds initialization of super block
Signed-off-by: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com>
Signed-off-by: Yin Xiujiang <yinxiujiang(a)kylinos.cn>
---
fs/ntfs3/fsntfs.c | 2551 +++++++++++++++++++++++++++++++++++++++++++
fs/ntfs3/index.c | 2647 +++++++++++++++++++++++++++++++++++++++++++++
fs/ntfs3/inode.c | 2029 ++++++++++++++++++++++++++++++++++
fs/ntfs3/super.c | 1504 ++++++++++++++++++++++++++
4 files changed, 8731 insertions(+)
create mode 100644 fs/ntfs3/fsntfs.c
create mode 100644 fs/ntfs3/index.c
create mode 100644 fs/ntfs3/inode.c
create mode 100644 fs/ntfs3/super.c
diff --git a/fs/ntfs3/fsntfs.c b/fs/ntfs3/fsntfs.c
new file mode 100644
index 000000000000..92140050fb6c
--- /dev/null
+++ b/fs/ntfs3/fsntfs.c
@@ -0,0 +1,2551 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ *
+ * Copyright (C) 2019-2021 Paragon Software GmbH, All rights reserved.
+ *
+ */
+
+#include <linux/blkdev.h>
+#include <linux/buffer_head.h>
+#include <linux/fs.h>
+#include <linux/nls.h>
+
+#include "debug.h"
+#include "ntfs.h"
+#include "ntfs_fs.h"
+
+// clang-format off
+const struct cpu_str NAME_MFT = {
+ 4, 0, { '$', 'M', 'F', 'T' },
+};
+const struct cpu_str NAME_MIRROR = {
+ 8, 0, { '$', 'M', 'F', 'T', 'M', 'i', 'r', 'r' },
+};
+const struct cpu_str NAME_LOGFILE = {
+ 8, 0, { '$', 'L', 'o', 'g', 'F', 'i', 'l', 'e' },
+};
+const struct cpu_str NAME_VOLUME = {
+ 7, 0, { '$', 'V', 'o', 'l', 'u', 'm', 'e' },
+};
+const struct cpu_str NAME_ATTRDEF = {
+ 8, 0, { '$', 'A', 't', 't', 'r', 'D', 'e', 'f' },
+};
+const struct cpu_str NAME_ROOT = {
+ 1, 0, { '.' },
+};
+const struct cpu_str NAME_BITMAP = {
+ 7, 0, { '$', 'B', 'i', 't', 'm', 'a', 'p' },
+};
+const struct cpu_str NAME_BOOT = {
+ 5, 0, { '$', 'B', 'o', 'o', 't' },
+};
+const struct cpu_str NAME_BADCLUS = {
+ 8, 0, { '$', 'B', 'a', 'd', 'C', 'l', 'u', 's' },
+};
+const struct cpu_str NAME_QUOTA = {
+ 6, 0, { '$', 'Q', 'u', 'o', 't', 'a' },
+};
+const struct cpu_str NAME_SECURE = {
+ 7, 0, { '$', 'S', 'e', 'c', 'u', 'r', 'e' },
+};
+const struct cpu_str NAME_UPCASE = {
+ 7, 0, { '$', 'U', 'p', 'C', 'a', 's', 'e' },
+};
+const struct cpu_str NAME_EXTEND = {
+ 7, 0, { '$', 'E', 'x', 't', 'e', 'n', 'd' },
+};
+const struct cpu_str NAME_OBJID = {
+ 6, 0, { '$', 'O', 'b', 'j', 'I', 'd' },
+};
+const struct cpu_str NAME_REPARSE = {
+ 8, 0, { '$', 'R', 'e', 'p', 'a', 'r', 's', 'e' },
+};
+const struct cpu_str NAME_USNJRNL = {
+ 8, 0, { '$', 'U', 's', 'n', 'J', 'r', 'n', 'l' },
+};
+const __le16 BAD_NAME[4] = {
+ cpu_to_le16('$'), cpu_to_le16('B'), cpu_to_le16('a'), cpu_to_le16('d'),
+};
+const __le16 I30_NAME[4] = {
+ cpu_to_le16('$'), cpu_to_le16('I'), cpu_to_le16('3'), cpu_to_le16('0'),
+};
+const __le16 SII_NAME[4] = {
+ cpu_to_le16('$'), cpu_to_le16('S'), cpu_to_le16('I'), cpu_to_le16('I'),
+};
+const __le16 SDH_NAME[4] = {
+ cpu_to_le16('$'), cpu_to_le16('S'), cpu_to_le16('D'), cpu_to_le16('H'),
+};
+const __le16 SDS_NAME[4] = {
+ cpu_to_le16('$'), cpu_to_le16('S'), cpu_to_le16('D'), cpu_to_le16('S'),
+};
+const __le16 SO_NAME[2] = {
+ cpu_to_le16('$'), cpu_to_le16('O'),
+};
+const __le16 SQ_NAME[2] = {
+ cpu_to_le16('$'), cpu_to_le16('Q'),
+};
+const __le16 SR_NAME[2] = {
+ cpu_to_le16('$'), cpu_to_le16('R'),
+};
+
+#ifdef CONFIG_NTFS3_LZX_XPRESS
+const __le16 WOF_NAME[17] = {
+ cpu_to_le16('W'), cpu_to_le16('o'), cpu_to_le16('f'), cpu_to_le16('C'),
+ cpu_to_le16('o'), cpu_to_le16('m'), cpu_to_le16('p'), cpu_to_le16('r'),
+ cpu_to_le16('e'), cpu_to_le16('s'), cpu_to_le16('s'), cpu_to_le16('e'),
+ cpu_to_le16('d'), cpu_to_le16('D'), cpu_to_le16('a'), cpu_to_le16('t'),
+ cpu_to_le16('a'),
+};
+#endif
+
+// clang-format on
+
+/*
+ * ntfs_fix_pre_write
+ *
+ * inserts fixups into 'rhdr' before writing to disk
+ */
+bool ntfs_fix_pre_write(struct NTFS_RECORD_HEADER *rhdr, size_t bytes)
+{
+ u16 *fixup, *ptr;
+ u16 sample;
+ u16 fo = le16_to_cpu(rhdr->fix_off);
+ u16 fn = le16_to_cpu(rhdr->fix_num);
+
+ if ((fo & 1) || fo + fn * sizeof(short) > SECTOR_SIZE || !fn-- ||
+ fn * SECTOR_SIZE > bytes) {
+ return false;
+ }
+
+ /* Get fixup pointer */
+ fixup = Add2Ptr(rhdr, fo);
+
+ if (*fixup >= 0x7FFF)
+ *fixup = 1;
+ else
+ *fixup += 1;
+
+ sample = *fixup;
+
+ ptr = Add2Ptr(rhdr, SECTOR_SIZE - sizeof(short));
+
+ while (fn--) {
+ *++fixup = *ptr;
+ *ptr = sample;
+ ptr += SECTOR_SIZE / sizeof(short);
+ }
+ return true;
+}
+
+/*
+ * ntfs_fix_post_read
+ *
+ * remove fixups after reading from disk
+ * Returns < 0 if error, 0 if ok, 1 if need to update fixups
+ */
+int ntfs_fix_post_read(struct NTFS_RECORD_HEADER *rhdr, size_t bytes,
+ bool simple)
+{
+ int ret;
+ u16 *fixup, *ptr;
+ u16 sample, fo, fn;
+
+ fo = le16_to_cpu(rhdr->fix_off);
+ fn = simple ? ((bytes >> SECTOR_SHIFT) + 1)
+ : le16_to_cpu(rhdr->fix_num);
+
+ /* Check errors */
+ if ((fo & 1) || fo + fn * sizeof(short) > SECTOR_SIZE || !fn-- ||
+ fn * SECTOR_SIZE > bytes) {
+ return -EINVAL; /* native chkntfs returns ok! */
+ }
+
+ /* Get fixup pointer */
+ fixup = Add2Ptr(rhdr, fo);
+ sample = *fixup;
+ ptr = Add2Ptr(rhdr, SECTOR_SIZE - sizeof(short));
+ ret = 0;
+
+ while (fn--) {
+ /* Test current word */
+ if (*ptr != sample) {
+ /* Fixup does not match! Is it serious error? */
+ ret = -E_NTFS_FIXUP;
+ }
+
+ /* Replace fixup */
+ *ptr = *++fixup;
+ ptr += SECTOR_SIZE / sizeof(short);
+ }
+
+ return ret;
+}
+
+/*
+ * ntfs_extend_init
+ *
+ * loads $Extend file
+ */
+int ntfs_extend_init(struct ntfs_sb_info *sbi)
+{
+ int err;
+ struct super_block *sb = sbi->sb;
+ struct inode *inode, *inode2;
+ struct MFT_REF ref;
+
+ if (sbi->volume.major_ver < 3) {
+ ntfs_notice(sb, "Skip $Extend 'cause NTFS version");
+ return 0;
+ }
+
+ ref.low = cpu_to_le32(MFT_REC_EXTEND);
+ ref.high = 0;
+ ref.seq = cpu_to_le16(MFT_REC_EXTEND);
+ inode = ntfs_iget5(sb, &ref, &NAME_EXTEND);
+ if (IS_ERR(inode)) {
+ err = PTR_ERR(inode);
+ ntfs_err(sb, "Failed to load $Extend.");
+ inode = NULL;
+ goto out;
+ }
+
+ /* if ntfs_iget5 reads from disk it never returns bad inode */
+ if (!S_ISDIR(inode->i_mode)) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ /* Try to find $ObjId */
+ inode2 = dir_search_u(inode, &NAME_OBJID, NULL);
+ if (inode2 && !IS_ERR(inode2)) {
+ if (is_bad_inode(inode2)) {
+ iput(inode2);
+ } else {
+ sbi->objid.ni = ntfs_i(inode2);
+ sbi->objid_no = inode2->i_ino;
+ }
+ }
+
+ /* Try to find $Quota */
+ inode2 = dir_search_u(inode, &NAME_QUOTA, NULL);
+ if (inode2 && !IS_ERR(inode2)) {
+ sbi->quota_no = inode2->i_ino;
+ iput(inode2);
+ }
+
+ /* Try to find $Reparse */
+ inode2 = dir_search_u(inode, &NAME_REPARSE, NULL);
+ if (inode2 && !IS_ERR(inode2)) {
+ sbi->reparse.ni = ntfs_i(inode2);
+ sbi->reparse_no = inode2->i_ino;
+ }
+
+ /* Try to find $UsnJrnl */
+ inode2 = dir_search_u(inode, &NAME_USNJRNL, NULL);
+ if (inode2 && !IS_ERR(inode2)) {
+ sbi->usn_jrnl_no = inode2->i_ino;
+ iput(inode2);
+ }
+
+ err = 0;
+out:
+ iput(inode);
+ return err;
+}
+
+int ntfs_loadlog_and_replay(struct ntfs_inode *ni, struct ntfs_sb_info *sbi)
+{
+ int err = 0;
+ struct super_block *sb = sbi->sb;
+ bool initialized = false;
+ struct MFT_REF ref;
+ struct inode *inode;
+
+ /* Check for 4GB */
+ if (ni->vfs_inode.i_size >= 0x100000000ull) {
+ ntfs_err(sb, "\x24LogFile is too big");
+ err = -EINVAL;
+ goto out;
+ }
+
+ sbi->flags |= NTFS_FLAGS_LOG_REPLAYING;
+
+ ref.low = cpu_to_le32(MFT_REC_MFT);
+ ref.high = 0;
+ ref.seq = cpu_to_le16(1);
+
+ inode = ntfs_iget5(sb, &ref, NULL);
+
+ if (IS_ERR(inode))
+ inode = NULL;
+
+ if (!inode) {
+ /* Try to use mft copy */
+ u64 t64 = sbi->mft.lbo;
+
+ sbi->mft.lbo = sbi->mft.lbo2;
+ inode = ntfs_iget5(sb, &ref, NULL);
+ sbi->mft.lbo = t64;
+ if (IS_ERR(inode))
+ inode = NULL;
+ }
+
+ if (!inode) {
+ err = -EINVAL;
+ ntfs_err(sb, "Failed to load $MFT.");
+ goto out;
+ }
+
+ sbi->mft.ni = ntfs_i(inode);
+
+ /* LogFile should not contains attribute list */
+ err = ni_load_all_mi(sbi->mft.ni);
+ if (!err)
+ err = log_replay(ni, &initialized);
+
+ iput(inode);
+ sbi->mft.ni = NULL;
+
+ sync_blockdev(sb->s_bdev);
+ invalidate_bdev(sb->s_bdev);
+
+ if (sbi->flags & NTFS_FLAGS_NEED_REPLAY) {
+ err = 0;
+ goto out;
+ }
+
+ if (sb_rdonly(sb) || !initialized)
+ goto out;
+
+ /* fill LogFile by '-1' if it is initialized */
+ err = ntfs_bio_fill_1(sbi, &ni->file.run);
+
+out:
+ sbi->flags &= ~NTFS_FLAGS_LOG_REPLAYING;
+
+ return err;
+}
+
+/*
+ * ntfs_query_def
+ *
+ * returns current ATTR_DEF_ENTRY for given attribute type
+ */
+const struct ATTR_DEF_ENTRY *ntfs_query_def(struct ntfs_sb_info *sbi,
+ enum ATTR_TYPE type)
+{
+ int type_in = le32_to_cpu(type);
+ size_t min_idx = 0;
+ size_t max_idx = sbi->def_entries - 1;
+
+ while (min_idx <= max_idx) {
+ size_t i = min_idx + ((max_idx - min_idx) >> 1);
+ const struct ATTR_DEF_ENTRY *entry = sbi->def_table + i;
+ int diff = le32_to_cpu(entry->type) - type_in;
+
+ if (!diff)
+ return entry;
+ if (diff < 0)
+ min_idx = i + 1;
+ else if (i)
+ max_idx = i - 1;
+ else
+ return NULL;
+ }
+ return NULL;
+}
+
+/*
+ * ntfs_look_for_free_space
+ *
+ * looks for a free space in bitmap
+ */
+int ntfs_look_for_free_space(struct ntfs_sb_info *sbi, CLST lcn, CLST len,
+ CLST *new_lcn, CLST *new_len,
+ enum ALLOCATE_OPT opt)
+{
+ int err;
+ struct super_block *sb = sbi->sb;
+ size_t a_lcn, zlen, zeroes, zlcn, zlen2, ztrim, new_zlen;
+ struct wnd_bitmap *wnd = &sbi->used.bitmap;
+
+ down_write_nested(&wnd->rw_lock, BITMAP_MUTEX_CLUSTERS);
+ if (opt & ALLOCATE_MFT) {
+ CLST alen;
+
+ zlen = wnd_zone_len(wnd);
+
+ if (!zlen) {
+ err = ntfs_refresh_zone(sbi);
+ if (err)
+ goto out;
+
+ zlen = wnd_zone_len(wnd);
+
+ if (!zlen) {
+ ntfs_err(sbi->sb,
+ "no free space to extend mft");
+ err = -ENOSPC;
+ goto out;
+ }
+ }
+
+ lcn = wnd_zone_bit(wnd);
+ alen = zlen > len ? len : zlen;
+
+ wnd_zone_set(wnd, lcn + alen, zlen - alen);
+
+ err = wnd_set_used(wnd, lcn, alen);
+ if (err)
+ goto out;
+
+ *new_lcn = lcn;
+ *new_len = alen;
+ goto ok;
+ }
+
+ /*
+ * 'Cause cluster 0 is always used this value means that we should use
+ * cached value of 'next_free_lcn' to improve performance
+ */
+ if (!lcn)
+ lcn = sbi->used.next_free_lcn;
+
+ if (lcn >= wnd->nbits)
+ lcn = 0;
+
+ *new_len = wnd_find(wnd, len, lcn, BITMAP_FIND_MARK_AS_USED, &a_lcn);
+ if (*new_len) {
+ *new_lcn = a_lcn;
+ goto ok;
+ }
+
+ /* Try to use clusters from MftZone */
+ zlen = wnd_zone_len(wnd);
+ zeroes = wnd_zeroes(wnd);
+
+ /* Check too big request */
+ if (len > zeroes + zlen)
+ goto no_space;
+
+ if (zlen <= NTFS_MIN_MFT_ZONE)
+ goto no_space;
+
+ /* How many clusters to cat from zone */
+ zlcn = wnd_zone_bit(wnd);
+ zlen2 = zlen >> 1;
+ ztrim = len > zlen ? zlen : (len > zlen2 ? len : zlen2);
+ new_zlen = zlen - ztrim;
+
+ if (new_zlen < NTFS_MIN_MFT_ZONE) {
+ new_zlen = NTFS_MIN_MFT_ZONE;
+ if (new_zlen > zlen)
+ new_zlen = zlen;
+ }
+
+ wnd_zone_set(wnd, zlcn, new_zlen);
+
+ /* allocate continues clusters */
+ *new_len =
+ wnd_find(wnd, len, 0,
+ BITMAP_FIND_MARK_AS_USED | BITMAP_FIND_FULL, &a_lcn);
+ if (*new_len) {
+ *new_lcn = a_lcn;
+ goto ok;
+ }
+
+no_space:
+ up_write(&wnd->rw_lock);
+
+ return -ENOSPC;
+
+ok:
+ err = 0;
+
+ ntfs_unmap_meta(sb, *new_lcn, *new_len);
+
+ if (opt & ALLOCATE_MFT)
+ goto out;
+
+ /* Set hint for next requests */
+ sbi->used.next_free_lcn = *new_lcn + *new_len;
+
+out:
+ up_write(&wnd->rw_lock);
+ return err;
+}
+
+/*
+ * ntfs_extend_mft
+ *
+ * allocates additional MFT records
+ * sbi->mft.bitmap is locked for write
+ *
+ * NOTE: recursive:
+ * ntfs_look_free_mft ->
+ * ntfs_extend_mft ->
+ * attr_set_size ->
+ * ni_insert_nonresident ->
+ * ni_insert_attr ->
+ * ni_ins_attr_ext ->
+ * ntfs_look_free_mft ->
+ * ntfs_extend_mft
+ * To avoid recursive always allocate space for two new mft records
+ * see attrib.c: "at least two mft to avoid recursive loop"
+ */
+static int ntfs_extend_mft(struct ntfs_sb_info *sbi)
+{
+ int err;
+ struct ntfs_inode *ni = sbi->mft.ni;
+ size_t new_mft_total;
+ u64 new_mft_bytes, new_bitmap_bytes;
+ struct ATTRIB *attr;
+ struct wnd_bitmap *wnd = &sbi->mft.bitmap;
+
+ new_mft_total = (wnd->nbits + MFT_INCREASE_CHUNK + 127) & (CLST)~127;
+ new_mft_bytes = (u64)new_mft_total << sbi->record_bits;
+
+ /* Step 1: Resize $MFT::DATA */
+ down_write(&ni->file.run_lock);
+ err = attr_set_size(ni, ATTR_DATA, NULL, 0, &ni->file.run,
+ new_mft_bytes, NULL, false, &attr);
+
+ if (err) {
+ up_write(&ni->file.run_lock);
+ goto out;
+ }
+
+ attr->nres.valid_size = attr->nres.data_size;
+ new_mft_total = le64_to_cpu(attr->nres.alloc_size) >> sbi->record_bits;
+ ni->mi.dirty = true;
+
+ /* Step 2: Resize $MFT::BITMAP */
+ new_bitmap_bytes = bitmap_size(new_mft_total);
+
+ err = attr_set_size(ni, ATTR_BITMAP, NULL, 0, &sbi->mft.bitmap.run,
+ new_bitmap_bytes, &new_bitmap_bytes, true, NULL);
+
+ /* Refresh Mft Zone if necessary */
+ down_write_nested(&sbi->used.bitmap.rw_lock, BITMAP_MUTEX_CLUSTERS);
+
+ ntfs_refresh_zone(sbi);
+
+ up_write(&sbi->used.bitmap.rw_lock);
+ up_write(&ni->file.run_lock);
+
+ if (err)
+ goto out;
+
+ err = wnd_extend(wnd, new_mft_total);
+
+ if (err)
+ goto out;
+
+ ntfs_clear_mft_tail(sbi, sbi->mft.used, new_mft_total);
+
+ err = _ni_write_inode(&ni->vfs_inode, 0);
+out:
+ return err;
+}
+
+/*
+ * ntfs_look_free_mft
+ *
+ * looks for a free MFT record
+ */
+int ntfs_look_free_mft(struct ntfs_sb_info *sbi, CLST *rno, bool mft,
+ struct ntfs_inode *ni, struct mft_inode **mi)
+{
+ int err = 0;
+ size_t zbit, zlen, from, to, fr;
+ size_t mft_total;
+ struct MFT_REF ref;
+ struct super_block *sb = sbi->sb;
+ struct wnd_bitmap *wnd = &sbi->mft.bitmap;
+ u32 ir;
+
+ static_assert(sizeof(sbi->mft.reserved_bitmap) * 8 >=
+ MFT_REC_FREE - MFT_REC_RESERVED);
+
+ if (!mft)
+ down_write_nested(&wnd->rw_lock, BITMAP_MUTEX_MFT);
+
+ zlen = wnd_zone_len(wnd);
+
+ /* Always reserve space for MFT */
+ if (zlen) {
+ if (mft) {
+ zbit = wnd_zone_bit(wnd);
+ *rno = zbit;
+ wnd_zone_set(wnd, zbit + 1, zlen - 1);
+ }
+ goto found;
+ }
+
+ /* No MFT zone. find the nearest to '0' free MFT */
+ if (!wnd_find(wnd, 1, MFT_REC_FREE, 0, &zbit)) {
+ /* Resize MFT */
+ mft_total = wnd->nbits;
+
+ err = ntfs_extend_mft(sbi);
+ if (!err) {
+ zbit = mft_total;
+ goto reserve_mft;
+ }
+
+ if (!mft || MFT_REC_FREE == sbi->mft.next_reserved)
+ goto out;
+
+ err = 0;
+
+ /*
+ * Look for free record reserved area [11-16) ==
+ * [MFT_REC_RESERVED, MFT_REC_FREE ) MFT bitmap always
+ * marks it as used
+ */
+ if (!sbi->mft.reserved_bitmap) {
+ /* Once per session create internal bitmap for 5 bits */
+ sbi->mft.reserved_bitmap = 0xFF;
+
+ ref.high = 0;
+ for (ir = MFT_REC_RESERVED; ir < MFT_REC_FREE; ir++) {
+ struct inode *i;
+ struct ntfs_inode *ni;
+ struct MFT_REC *mrec;
+
+ ref.low = cpu_to_le32(ir);
+ ref.seq = cpu_to_le16(ir);
+
+ i = ntfs_iget5(sb, &ref, NULL);
+ if (IS_ERR(i)) {
+next:
+ ntfs_notice(
+ sb,
+ "Invalid reserved record %x",
+ ref.low);
+ continue;
+ }
+ if (is_bad_inode(i)) {
+ iput(i);
+ goto next;
+ }
+
+ ni = ntfs_i(i);
+
+ mrec = ni->mi.mrec;
+
+ if (!is_rec_base(mrec))
+ goto next;
+
+ if (mrec->hard_links)
+ goto next;
+
+ if (!ni_std(ni))
+ goto next;
+
+ if (ni_find_attr(ni, NULL, NULL, ATTR_NAME,
+ NULL, 0, NULL, NULL))
+ goto next;
+
+ __clear_bit(ir - MFT_REC_RESERVED,
+ &sbi->mft.reserved_bitmap);
+ }
+ }
+
+ /* Scan 5 bits for zero. Bit 0 == MFT_REC_RESERVED */
+ zbit = find_next_zero_bit(&sbi->mft.reserved_bitmap,
+ MFT_REC_FREE, MFT_REC_RESERVED);
+ if (zbit >= MFT_REC_FREE) {
+ sbi->mft.next_reserved = MFT_REC_FREE;
+ goto out;
+ }
+
+ zlen = 1;
+ sbi->mft.next_reserved = zbit;
+ } else {
+reserve_mft:
+ zlen = zbit == MFT_REC_FREE ? (MFT_REC_USER - MFT_REC_FREE) : 4;
+ if (zbit + zlen > wnd->nbits)
+ zlen = wnd->nbits - zbit;
+
+ while (zlen > 1 && !wnd_is_free(wnd, zbit, zlen))
+ zlen -= 1;
+
+ /* [zbit, zbit + zlen) will be used for Mft itself */
+ from = sbi->mft.used;
+ if (from < zbit)
+ from = zbit;
+ to = zbit + zlen;
+ if (from < to) {
+ ntfs_clear_mft_tail(sbi, from, to);
+ sbi->mft.used = to;
+ }
+ }
+
+ if (mft) {
+ *rno = zbit;
+ zbit += 1;
+ zlen -= 1;
+ }
+
+ wnd_zone_set(wnd, zbit, zlen);
+
+found:
+ if (!mft) {
+ /* The request to get record for general purpose */
+ if (sbi->mft.next_free < MFT_REC_USER)
+ sbi->mft.next_free = MFT_REC_USER;
+
+ for (;;) {
+ if (sbi->mft.next_free >= sbi->mft.bitmap.nbits) {
+ } else if (!wnd_find(wnd, 1, MFT_REC_USER, 0, &fr)) {
+ sbi->mft.next_free = sbi->mft.bitmap.nbits;
+ } else {
+ *rno = fr;
+ sbi->mft.next_free = *rno + 1;
+ break;
+ }
+
+ err = ntfs_extend_mft(sbi);
+ if (err)
+ goto out;
+ }
+ }
+
+ if (ni && !ni_add_subrecord(ni, *rno, mi)) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ /* We have found a record that are not reserved for next MFT */
+ if (*rno >= MFT_REC_FREE)
+ wnd_set_used(wnd, *rno, 1);
+ else if (*rno >= MFT_REC_RESERVED && sbi->mft.reserved_bitmap_inited)
+ __set_bit(*rno - MFT_REC_RESERVED, &sbi->mft.reserved_bitmap);
+
+out:
+ if (!mft)
+ up_write(&wnd->rw_lock);
+
+ return err;
+}
+
+/*
+ * ntfs_mark_rec_free
+ *
+ * marks record as free
+ */
+void ntfs_mark_rec_free(struct ntfs_sb_info *sbi, CLST rno)
+{
+ struct wnd_bitmap *wnd = &sbi->mft.bitmap;
+
+ down_write_nested(&wnd->rw_lock, BITMAP_MUTEX_MFT);
+ if (rno >= wnd->nbits)
+ goto out;
+
+ if (rno >= MFT_REC_FREE) {
+ if (!wnd_is_used(wnd, rno, 1))
+ ntfs_set_state(sbi, NTFS_DIRTY_ERROR);
+ else
+ wnd_set_free(wnd, rno, 1);
+ } else if (rno >= MFT_REC_RESERVED && sbi->mft.reserved_bitmap_inited) {
+ __clear_bit(rno - MFT_REC_RESERVED, &sbi->mft.reserved_bitmap);
+ }
+
+ if (rno < wnd_zone_bit(wnd))
+ wnd_zone_set(wnd, rno, 1);
+ else if (rno < sbi->mft.next_free && rno >= MFT_REC_USER)
+ sbi->mft.next_free = rno;
+
+out:
+ up_write(&wnd->rw_lock);
+}
+
+/*
+ * ntfs_clear_mft_tail
+ *
+ * formats empty records [from, to)
+ * sbi->mft.bitmap is locked for write
+ */
+int ntfs_clear_mft_tail(struct ntfs_sb_info *sbi, size_t from, size_t to)
+{
+ int err;
+ u32 rs;
+ u64 vbo;
+ struct runs_tree *run;
+ struct ntfs_inode *ni;
+
+ if (from >= to)
+ return 0;
+
+ rs = sbi->record_size;
+ ni = sbi->mft.ni;
+ run = &ni->file.run;
+
+ down_read(&ni->file.run_lock);
+ vbo = (u64)from * rs;
+ for (; from < to; from++, vbo += rs) {
+ struct ntfs_buffers nb;
+
+ err = ntfs_get_bh(sbi, run, vbo, rs, &nb);
+ if (err)
+ goto out;
+
+ err = ntfs_write_bh(sbi, &sbi->new_rec->rhdr, &nb, 0);
+ nb_put(&nb);
+ if (err)
+ goto out;
+ }
+
+out:
+ sbi->mft.used = from;
+ up_read(&ni->file.run_lock);
+ return err;
+}
+
+/*
+ * ntfs_refresh_zone
+ *
+ * refreshes Mft zone
+ * sbi->used.bitmap is locked for rw
+ * sbi->mft.bitmap is locked for write
+ * sbi->mft.ni->file.run_lock for write
+ */
+int ntfs_refresh_zone(struct ntfs_sb_info *sbi)
+{
+ CLST zone_limit, zone_max, lcn, vcn, len;
+ size_t lcn_s, zlen;
+ struct wnd_bitmap *wnd = &sbi->used.bitmap;
+ struct ntfs_inode *ni = sbi->mft.ni;
+
+ /* Do not change anything unless we have non empty Mft zone */
+ if (wnd_zone_len(wnd))
+ return 0;
+
+ /*
+ * Compute the mft zone at two steps
+ * It would be nice if we are able to allocate
+ * 1/8 of total clusters for MFT but not more then 512 MB
+ */
+ zone_limit = (512 * 1024 * 1024) >> sbi->cluster_bits;
+ zone_max = wnd->nbits >> 3;
+ if (zone_max > zone_limit)
+ zone_max = zone_limit;
+
+ vcn = bytes_to_cluster(sbi,
+ (u64)sbi->mft.bitmap.nbits << sbi->record_bits);
+
+ if (!run_lookup_entry(&ni->file.run, vcn - 1, &lcn, &len, NULL))
+ lcn = SPARSE_LCN;
+
+ /* We should always find Last Lcn for MFT */
+ if (lcn == SPARSE_LCN)
+ return -EINVAL;
+
+ lcn_s = lcn + 1;
+
+ /* Try to allocate clusters after last MFT run */
+ zlen = wnd_find(wnd, zone_max, lcn_s, 0, &lcn_s);
+ if (!zlen) {
+ ntfs_notice(sbi->sb, "MftZone: unavailable");
+ return 0;
+ }
+
+ /* Truncate too large zone */
+ wnd_zone_set(wnd, lcn_s, zlen);
+
+ return 0;
+}
+
+/*
+ * ntfs_update_mftmirr
+ *
+ * updates $MFTMirr data
+ */
+int ntfs_update_mftmirr(struct ntfs_sb_info *sbi, int wait)
+{
+ int err;
+ struct super_block *sb = sbi->sb;
+ u32 blocksize = sb->s_blocksize;
+ sector_t block1, block2;
+ u32 bytes;
+
+ if (!(sbi->flags & NTFS_FLAGS_MFTMIRR))
+ return 0;
+
+ err = 0;
+ bytes = sbi->mft.recs_mirr << sbi->record_bits;
+ block1 = sbi->mft.lbo >> sb->s_blocksize_bits;
+ block2 = sbi->mft.lbo2 >> sb->s_blocksize_bits;
+
+ for (; bytes >= blocksize; bytes -= blocksize) {
+ struct buffer_head *bh1, *bh2;
+
+ bh1 = sb_bread(sb, block1++);
+ if (!bh1) {
+ err = -EIO;
+ goto out;
+ }
+
+ bh2 = sb_getblk(sb, block2++);
+ if (!bh2) {
+ put_bh(bh1);
+ err = -EIO;
+ goto out;
+ }
+
+ if (buffer_locked(bh2))
+ __wait_on_buffer(bh2);
+
+ lock_buffer(bh2);
+ memcpy(bh2->b_data, bh1->b_data, blocksize);
+ set_buffer_uptodate(bh2);
+ mark_buffer_dirty(bh2);
+ unlock_buffer(bh2);
+
+ put_bh(bh1);
+ bh1 = NULL;
+
+ if (wait)
+ err = sync_dirty_buffer(bh2);
+
+ put_bh(bh2);
+ if (err)
+ goto out;
+ }
+
+ sbi->flags &= ~NTFS_FLAGS_MFTMIRR;
+
+out:
+ return err;
+}
+
+/*
+ * ntfs_set_state
+ *
+ * mount: ntfs_set_state(NTFS_DIRTY_DIRTY)
+ * umount: ntfs_set_state(NTFS_DIRTY_CLEAR)
+ * ntfs error: ntfs_set_state(NTFS_DIRTY_ERROR)
+ */
+int ntfs_set_state(struct ntfs_sb_info *sbi, enum NTFS_DIRTY_FLAGS dirty)
+{
+ int err;
+ struct ATTRIB *attr;
+ struct VOLUME_INFO *info;
+ struct mft_inode *mi;
+ struct ntfs_inode *ni;
+
+ /*
+ * do not change state if fs was real_dirty
+ * do not change state if fs already dirty(clear)
+ * do not change any thing if mounted read only
+ */
+ if (sbi->volume.real_dirty || sb_rdonly(sbi->sb))
+ return 0;
+
+ /* Check cached value */
+ if ((dirty == NTFS_DIRTY_CLEAR ? 0 : VOLUME_FLAG_DIRTY) ==
+ (sbi->volume.flags & VOLUME_FLAG_DIRTY))
+ return 0;
+
+ ni = sbi->volume.ni;
+ if (!ni)
+ return -EINVAL;
+
+ mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_DIRTY);
+
+ attr = ni_find_attr(ni, NULL, NULL, ATTR_VOL_INFO, NULL, 0, NULL, &mi);
+ if (!attr) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ info = resident_data_ex(attr, SIZEOF_ATTRIBUTE_VOLUME_INFO);
+ if (!info) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ switch (dirty) {
+ case NTFS_DIRTY_ERROR:
+ ntfs_notice(sbi->sb, "Mark volume as dirty due to NTFS errors");
+ sbi->volume.real_dirty = true;
+ fallthrough;
+ case NTFS_DIRTY_DIRTY:
+ info->flags |= VOLUME_FLAG_DIRTY;
+ break;
+ case NTFS_DIRTY_CLEAR:
+ info->flags &= ~VOLUME_FLAG_DIRTY;
+ break;
+ }
+ /* cache current volume flags*/
+ sbi->volume.flags = info->flags;
+ mi->dirty = true;
+ err = 0;
+
+out:
+ ni_unlock(ni);
+ if (err)
+ return err;
+
+ mark_inode_dirty(&ni->vfs_inode);
+ /*verify(!ntfs_update_mftmirr()); */
+
+ /*
+ * if we used wait=1, sync_inode_metadata waits for the io for the
+ * inode to finish. It hangs when media is removed.
+ * So wait=0 is sent down to sync_inode_metadata
+ * and filemap_fdatawrite is used for the data blocks
+ */
+ err = sync_inode_metadata(&ni->vfs_inode, 0);
+ if (!err)
+ err = filemap_fdatawrite(ni->vfs_inode.i_mapping);
+
+ return err;
+}
+
+/*
+ * security_hash
+ *
+ * calculates a hash of security descriptor
+ */
+static inline __le32 security_hash(const void *sd, size_t bytes)
+{
+ u32 hash = 0;
+ const __le32 *ptr = sd;
+
+ bytes >>= 2;
+ while (bytes--)
+ hash = ((hash >> 0x1D) | (hash << 3)) + le32_to_cpu(*ptr++);
+ return cpu_to_le32(hash);
+}
+
+int ntfs_sb_read(struct super_block *sb, u64 lbo, size_t bytes, void *buffer)
+{
+ struct block_device *bdev = sb->s_bdev;
+ u32 blocksize = sb->s_blocksize;
+ u64 block = lbo >> sb->s_blocksize_bits;
+ u32 off = lbo & (blocksize - 1);
+ u32 op = blocksize - off;
+
+ for (; bytes; block += 1, off = 0, op = blocksize) {
+ struct buffer_head *bh = __bread(bdev, block, blocksize);
+
+ if (!bh)
+ return -EIO;
+
+ if (op > bytes)
+ op = bytes;
+
+ memcpy(buffer, bh->b_data + off, op);
+
+ put_bh(bh);
+
+ bytes -= op;
+ buffer = Add2Ptr(buffer, op);
+ }
+
+ return 0;
+}
+
+int ntfs_sb_write(struct super_block *sb, u64 lbo, size_t bytes,
+ const void *buf, int wait)
+{
+ u32 blocksize = sb->s_blocksize;
+ struct block_device *bdev = sb->s_bdev;
+ sector_t block = lbo >> sb->s_blocksize_bits;
+ u32 off = lbo & (blocksize - 1);
+ u32 op = blocksize - off;
+ struct buffer_head *bh;
+
+ if (!wait && (sb->s_flags & SB_SYNCHRONOUS))
+ wait = 1;
+
+ for (; bytes; block += 1, off = 0, op = blocksize) {
+ if (op > bytes)
+ op = bytes;
+
+ if (op < blocksize) {
+ bh = __bread(bdev, block, blocksize);
+ if (!bh) {
+ ntfs_err(sb, "failed to read block %llx",
+ (u64)block);
+ return -EIO;
+ }
+ } else {
+ bh = __getblk(bdev, block, blocksize);
+ if (!bh)
+ return -ENOMEM;
+ }
+
+ if (buffer_locked(bh))
+ __wait_on_buffer(bh);
+
+ lock_buffer(bh);
+ if (buf) {
+ memcpy(bh->b_data + off, buf, op);
+ buf = Add2Ptr(buf, op);
+ } else {
+ memset(bh->b_data + off, -1, op);
+ }
+
+ set_buffer_uptodate(bh);
+ mark_buffer_dirty(bh);
+ unlock_buffer(bh);
+
+ if (wait) {
+ int err = sync_dirty_buffer(bh);
+
+ if (err) {
+ ntfs_err(
+ sb,
+ "failed to sync buffer at block %llx, error %d",
+ (u64)block, err);
+ put_bh(bh);
+ return err;
+ }
+ }
+
+ put_bh(bh);
+
+ bytes -= op;
+ }
+ return 0;
+}
+
+int ntfs_sb_write_run(struct ntfs_sb_info *sbi, const struct runs_tree *run,
+ u64 vbo, const void *buf, size_t bytes)
+{
+ struct super_block *sb = sbi->sb;
+ u8 cluster_bits = sbi->cluster_bits;
+ u32 off = vbo & sbi->cluster_mask;
+ CLST lcn, clen, vcn = vbo >> cluster_bits, vcn_next;
+ u64 lbo, len;
+ size_t idx;
+
+ if (!run_lookup_entry(run, vcn, &lcn, &clen, &idx))
+ return -ENOENT;
+
+ if (lcn == SPARSE_LCN)
+ return -EINVAL;
+
+ lbo = ((u64)lcn << cluster_bits) + off;
+ len = ((u64)clen << cluster_bits) - off;
+
+ for (;;) {
+ u32 op = len < bytes ? len : bytes;
+ int err = ntfs_sb_write(sb, lbo, op, buf, 0);
+
+ if (err)
+ return err;
+
+ bytes -= op;
+ if (!bytes)
+ break;
+
+ vcn_next = vcn + clen;
+ if (!run_get_entry(run, ++idx, &vcn, &lcn, &clen) ||
+ vcn != vcn_next)
+ return -ENOENT;
+
+ if (lcn == SPARSE_LCN)
+ return -EINVAL;
+
+ if (buf)
+ buf = Add2Ptr(buf, op);
+
+ lbo = ((u64)lcn << cluster_bits);
+ len = ((u64)clen << cluster_bits);
+ }
+
+ return 0;
+}
+
+struct buffer_head *ntfs_bread_run(struct ntfs_sb_info *sbi,
+ const struct runs_tree *run, u64 vbo)
+{
+ struct super_block *sb = sbi->sb;
+ u8 cluster_bits = sbi->cluster_bits;
+ CLST lcn;
+ u64 lbo;
+
+ if (!run_lookup_entry(run, vbo >> cluster_bits, &lcn, NULL, NULL))
+ return ERR_PTR(-ENOENT);
+
+ lbo = ((u64)lcn << cluster_bits) + (vbo & sbi->cluster_mask);
+
+ return ntfs_bread(sb, lbo >> sb->s_blocksize_bits);
+}
+
+int ntfs_read_run_nb(struct ntfs_sb_info *sbi, const struct runs_tree *run,
+ u64 vbo, void *buf, u32 bytes, struct ntfs_buffers *nb)
+{
+ int err;
+ struct super_block *sb = sbi->sb;
+ u32 blocksize = sb->s_blocksize;
+ u8 cluster_bits = sbi->cluster_bits;
+ u32 off = vbo & sbi->cluster_mask;
+ u32 nbh = 0;
+ CLST vcn_next, vcn = vbo >> cluster_bits;
+ CLST lcn, clen;
+ u64 lbo, len;
+ size_t idx;
+ struct buffer_head *bh;
+
+ if (!run) {
+ /* first reading of $Volume + $MFTMirr + LogFile goes here*/
+ if (vbo > MFT_REC_VOL * sbi->record_size) {
+ err = -ENOENT;
+ goto out;
+ }
+
+ /* use absolute boot's 'MFTCluster' to read record */
+ lbo = vbo + sbi->mft.lbo;
+ len = sbi->record_size;
+ } else if (!run_lookup_entry(run, vcn, &lcn, &clen, &idx)) {
+ err = -ENOENT;
+ goto out;
+ } else {
+ if (lcn == SPARSE_LCN) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ lbo = ((u64)lcn << cluster_bits) + off;
+ len = ((u64)clen << cluster_bits) - off;
+ }
+
+ off = lbo & (blocksize - 1);
+ if (nb) {
+ nb->off = off;
+ nb->bytes = bytes;
+ }
+
+ for (;;) {
+ u32 len32 = len >= bytes ? bytes : len;
+ sector_t block = lbo >> sb->s_blocksize_bits;
+
+ do {
+ u32 op = blocksize - off;
+
+ if (op > len32)
+ op = len32;
+
+ bh = ntfs_bread(sb, block);
+ if (!bh) {
+ err = -EIO;
+ goto out;
+ }
+
+ if (buf) {
+ memcpy(buf, bh->b_data + off, op);
+ buf = Add2Ptr(buf, op);
+ }
+
+ if (!nb) {
+ put_bh(bh);
+ } else if (nbh >= ARRAY_SIZE(nb->bh)) {
+ err = -EINVAL;
+ goto out;
+ } else {
+ nb->bh[nbh++] = bh;
+ nb->nbufs = nbh;
+ }
+
+ bytes -= op;
+ if (!bytes)
+ return 0;
+ len32 -= op;
+ block += 1;
+ off = 0;
+
+ } while (len32);
+
+ vcn_next = vcn + clen;
+ if (!run_get_entry(run, ++idx, &vcn, &lcn, &clen) ||
+ vcn != vcn_next) {
+ err = -ENOENT;
+ goto out;
+ }
+
+ if (lcn == SPARSE_LCN) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ lbo = ((u64)lcn << cluster_bits);
+ len = ((u64)clen << cluster_bits);
+ }
+
+out:
+ if (!nbh)
+ return err;
+
+ while (nbh) {
+ put_bh(nb->bh[--nbh]);
+ nb->bh[nbh] = NULL;
+ }
+
+ nb->nbufs = 0;
+ return err;
+}
+
+/* Returns < 0 if error, 0 if ok, '-E_NTFS_FIXUP' if need to update fixups */
+int ntfs_read_bh(struct ntfs_sb_info *sbi, const struct runs_tree *run, u64 vbo,
+ struct NTFS_RECORD_HEADER *rhdr, u32 bytes,
+ struct ntfs_buffers *nb)
+{
+ int err = ntfs_read_run_nb(sbi, run, vbo, rhdr, bytes, nb);
+
+ if (err)
+ return err;
+ return ntfs_fix_post_read(rhdr, nb->bytes, true);
+}
+
+int ntfs_get_bh(struct ntfs_sb_info *sbi, const struct runs_tree *run, u64 vbo,
+ u32 bytes, struct ntfs_buffers *nb)
+{
+ int err = 0;
+ struct super_block *sb = sbi->sb;
+ u32 blocksize = sb->s_blocksize;
+ u8 cluster_bits = sbi->cluster_bits;
+ CLST vcn_next, vcn = vbo >> cluster_bits;
+ u32 off;
+ u32 nbh = 0;
+ CLST lcn, clen;
+ u64 lbo, len;
+ size_t idx;
+
+ nb->bytes = bytes;
+
+ if (!run_lookup_entry(run, vcn, &lcn, &clen, &idx)) {
+ err = -ENOENT;
+ goto out;
+ }
+
+ off = vbo & sbi->cluster_mask;
+ lbo = ((u64)lcn << cluster_bits) + off;
+ len = ((u64)clen << cluster_bits) - off;
+
+ nb->off = off = lbo & (blocksize - 1);
+
+ for (;;) {
+ u32 len32 = len < bytes ? len : bytes;
+ sector_t block = lbo >> sb->s_blocksize_bits;
+
+ do {
+ u32 op;
+ struct buffer_head *bh;
+
+ if (nbh >= ARRAY_SIZE(nb->bh)) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ op = blocksize - off;
+ if (op > len32)
+ op = len32;
+
+ if (op == blocksize) {
+ bh = sb_getblk(sb, block);
+ if (!bh) {
+ err = -ENOMEM;
+ goto out;
+ }
+ if (buffer_locked(bh))
+ __wait_on_buffer(bh);
+ set_buffer_uptodate(bh);
+ } else {
+ bh = ntfs_bread(sb, block);
+ if (!bh) {
+ err = -EIO;
+ goto out;
+ }
+ }
+
+ nb->bh[nbh++] = bh;
+ bytes -= op;
+ if (!bytes) {
+ nb->nbufs = nbh;
+ return 0;
+ }
+
+ block += 1;
+ len32 -= op;
+ off = 0;
+ } while (len32);
+
+ vcn_next = vcn + clen;
+ if (!run_get_entry(run, ++idx, &vcn, &lcn, &clen) ||
+ vcn != vcn_next) {
+ err = -ENOENT;
+ goto out;
+ }
+
+ lbo = ((u64)lcn << cluster_bits);
+ len = ((u64)clen << cluster_bits);
+ }
+
+out:
+ while (nbh) {
+ put_bh(nb->bh[--nbh]);
+ nb->bh[nbh] = NULL;
+ }
+
+ nb->nbufs = 0;
+
+ return err;
+}
+
+int ntfs_write_bh(struct ntfs_sb_info *sbi, struct NTFS_RECORD_HEADER *rhdr,
+ struct ntfs_buffers *nb, int sync)
+{
+ int err = 0;
+ struct super_block *sb = sbi->sb;
+ u32 block_size = sb->s_blocksize;
+ u32 bytes = nb->bytes;
+ u32 off = nb->off;
+ u16 fo = le16_to_cpu(rhdr->fix_off);
+ u16 fn = le16_to_cpu(rhdr->fix_num);
+ u32 idx;
+ __le16 *fixup;
+ __le16 sample;
+
+ if ((fo & 1) || fo + fn * sizeof(short) > SECTOR_SIZE || !fn-- ||
+ fn * SECTOR_SIZE > bytes) {
+ return -EINVAL;
+ }
+
+ for (idx = 0; bytes && idx < nb->nbufs; idx += 1, off = 0) {
+ u32 op = block_size - off;
+ char *bh_data;
+ struct buffer_head *bh = nb->bh[idx];
+ __le16 *ptr, *end_data;
+
+ if (op > bytes)
+ op = bytes;
+
+ if (buffer_locked(bh))
+ __wait_on_buffer(bh);
+
+ lock_buffer(nb->bh[idx]);
+
+ bh_data = bh->b_data + off;
+ end_data = Add2Ptr(bh_data, op);
+ memcpy(bh_data, rhdr, op);
+
+ if (!idx) {
+ u16 t16;
+
+ fixup = Add2Ptr(bh_data, fo);
+ sample = *fixup;
+ t16 = le16_to_cpu(sample);
+ if (t16 >= 0x7FFF) {
+ sample = *fixup = cpu_to_le16(1);
+ } else {
+ sample = cpu_to_le16(t16 + 1);
+ *fixup = sample;
+ }
+
+ *(__le16 *)Add2Ptr(rhdr, fo) = sample;
+ }
+
+ ptr = Add2Ptr(bh_data, SECTOR_SIZE - sizeof(short));
+
+ do {
+ *++fixup = *ptr;
+ *ptr = sample;
+ ptr += SECTOR_SIZE / sizeof(short);
+ } while (ptr < end_data);
+
+ set_buffer_uptodate(bh);
+ mark_buffer_dirty(bh);
+ unlock_buffer(bh);
+
+ if (sync) {
+ int err2 = sync_dirty_buffer(bh);
+
+ if (!err && err2)
+ err = err2;
+ }
+
+ bytes -= op;
+ rhdr = Add2Ptr(rhdr, op);
+ }
+
+ return err;
+}
+
+static inline struct bio *ntfs_alloc_bio(u32 nr_vecs)
+{
+ struct bio *bio = bio_alloc(GFP_NOFS | __GFP_HIGH, nr_vecs);
+
+ if (!bio && (current->flags & PF_MEMALLOC)) {
+ while (!bio && (nr_vecs /= 2))
+ bio = bio_alloc(GFP_NOFS | __GFP_HIGH, nr_vecs);
+ }
+ return bio;
+}
+
+/* read/write pages from/to disk*/
+int ntfs_bio_pages(struct ntfs_sb_info *sbi, const struct runs_tree *run,
+ struct page **pages, u32 nr_pages, u64 vbo, u32 bytes,
+ u32 op)
+{
+ int err = 0;
+ struct bio *new, *bio = NULL;
+ struct super_block *sb = sbi->sb;
+ struct block_device *bdev = sb->s_bdev;
+ struct page *page;
+ u8 cluster_bits = sbi->cluster_bits;
+ CLST lcn, clen, vcn, vcn_next;
+ u32 add, off, page_idx;
+ u64 lbo, len;
+ size_t run_idx;
+ struct blk_plug plug;
+
+ if (!bytes)
+ return 0;
+
+ blk_start_plug(&plug);
+
+ /* align vbo and bytes to be 512 bytes aligned */
+ lbo = (vbo + bytes + 511) & ~511ull;
+ vbo = vbo & ~511ull;
+ bytes = lbo - vbo;
+
+ vcn = vbo >> cluster_bits;
+ if (!run_lookup_entry(run, vcn, &lcn, &clen, &run_idx)) {
+ err = -ENOENT;
+ goto out;
+ }
+ off = vbo & sbi->cluster_mask;
+ page_idx = 0;
+ page = pages[0];
+
+ for (;;) {
+ lbo = ((u64)lcn << cluster_bits) + off;
+ len = ((u64)clen << cluster_bits) - off;
+new_bio:
+ new = ntfs_alloc_bio(nr_pages - page_idx);
+ if (!new) {
+ err = -ENOMEM;
+ goto out;
+ }
+ if (bio) {
+ bio_chain(bio, new);
+ submit_bio(bio);
+ }
+ bio = new;
+ bio_set_dev(bio, bdev);
+ bio->bi_iter.bi_sector = lbo >> 9;
+ bio->bi_opf = op;
+
+ while (len) {
+ off = vbo & (PAGE_SIZE - 1);
+ add = off + len > PAGE_SIZE ? (PAGE_SIZE - off) : len;
+
+ if (bio_add_page(bio, page, add, off) < add)
+ goto new_bio;
+
+ if (bytes <= add)
+ goto out;
+ bytes -= add;
+ vbo += add;
+
+ if (add + off == PAGE_SIZE) {
+ page_idx += 1;
+ if (WARN_ON(page_idx >= nr_pages)) {
+ err = -EINVAL;
+ goto out;
+ }
+ page = pages[page_idx];
+ }
+
+ if (len <= add)
+ break;
+ len -= add;
+ lbo += add;
+ }
+
+ vcn_next = vcn + clen;
+ if (!run_get_entry(run, ++run_idx, &vcn, &lcn, &clen) ||
+ vcn != vcn_next) {
+ err = -ENOENT;
+ goto out;
+ }
+ off = 0;
+ }
+out:
+ if (bio) {
+ if (!err)
+ err = submit_bio_wait(bio);
+ bio_put(bio);
+ }
+ blk_finish_plug(&plug);
+
+ return err;
+}
+
+/*
+ * Helper for ntfs_loadlog_and_replay
+ * fill on-disk logfile range by (-1)
+ * this means empty logfile
+ */
+int ntfs_bio_fill_1(struct ntfs_sb_info *sbi, const struct runs_tree *run)
+{
+ int err = 0;
+ struct super_block *sb = sbi->sb;
+ struct block_device *bdev = sb->s_bdev;
+ u8 cluster_bits = sbi->cluster_bits;
+ struct bio *new, *bio = NULL;
+ CLST lcn, clen;
+ u64 lbo, len;
+ size_t run_idx;
+ struct page *fill;
+ void *kaddr;
+ struct blk_plug plug;
+
+ fill = alloc_page(GFP_KERNEL);
+ if (!fill)
+ return -ENOMEM;
+
+ kaddr = kmap_atomic(fill);
+ memset(kaddr, -1, PAGE_SIZE);
+ kunmap_atomic(kaddr);
+ flush_dcache_page(fill);
+ lock_page(fill);
+
+ if (!run_lookup_entry(run, 0, &lcn, &clen, &run_idx)) {
+ err = -ENOENT;
+ goto out;
+ }
+
+ /*
+ * TODO: try blkdev_issue_write_same
+ */
+ blk_start_plug(&plug);
+ do {
+ lbo = (u64)lcn << cluster_bits;
+ len = (u64)clen << cluster_bits;
+new_bio:
+ new = ntfs_alloc_bio(BIO_MAX_VECS);
+ if (!new) {
+ err = -ENOMEM;
+ break;
+ }
+ if (bio) {
+ bio_chain(bio, new);
+ submit_bio(bio);
+ }
+ bio = new;
+ bio_set_dev(bio, bdev);
+ bio->bi_opf = REQ_OP_WRITE;
+ bio->bi_iter.bi_sector = lbo >> 9;
+
+ for (;;) {
+ u32 add = len > PAGE_SIZE ? PAGE_SIZE : len;
+
+ if (bio_add_page(bio, fill, add, 0) < add)
+ goto new_bio;
+
+ lbo += add;
+ if (len <= add)
+ break;
+ len -= add;
+ }
+ } while (run_get_entry(run, ++run_idx, NULL, &lcn, &clen));
+
+ if (bio) {
+ if (!err)
+ err = submit_bio_wait(bio);
+ bio_put(bio);
+ }
+ blk_finish_plug(&plug);
+out:
+ unlock_page(fill);
+ put_page(fill);
+
+ return err;
+}
+
+int ntfs_vbo_to_lbo(struct ntfs_sb_info *sbi, const struct runs_tree *run,
+ u64 vbo, u64 *lbo, u64 *bytes)
+{
+ u32 off;
+ CLST lcn, len;
+ u8 cluster_bits = sbi->cluster_bits;
+
+ if (!run_lookup_entry(run, vbo >> cluster_bits, &lcn, &len, NULL))
+ return -ENOENT;
+
+ off = vbo & sbi->cluster_mask;
+ *lbo = lcn == SPARSE_LCN ? -1 : (((u64)lcn << cluster_bits) + off);
+ *bytes = ((u64)len << cluster_bits) - off;
+
+ return 0;
+}
+
+struct ntfs_inode *ntfs_new_inode(struct ntfs_sb_info *sbi, CLST rno, bool dir)
+{
+ int err = 0;
+ struct super_block *sb = sbi->sb;
+ struct inode *inode = new_inode(sb);
+ struct ntfs_inode *ni;
+
+ if (!inode)
+ return ERR_PTR(-ENOMEM);
+
+ ni = ntfs_i(inode);
+
+ err = mi_format_new(&ni->mi, sbi, rno, dir ? RECORD_FLAG_DIR : 0,
+ false);
+ if (err)
+ goto out;
+
+ inode->i_ino = rno;
+ if (insert_inode_locked(inode) < 0) {
+ err = -EIO;
+ goto out;
+ }
+
+out:
+ if (err) {
+ iput(inode);
+ ni = ERR_PTR(err);
+ }
+ return ni;
+}
+
+/*
+ * O:BAG:BAD:(A;OICI;FA;;;WD)
+ * owner S-1-5-32-544 (Administrators)
+ * group S-1-5-32-544 (Administrators)
+ * ACE: allow S-1-1-0 (Everyone) with FILE_ALL_ACCESS
+ */
+const u8 s_default_security[] __aligned(8) = {
+ 0x01, 0x00, 0x04, 0x80, 0x30, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x02, 0x00, 0x1C, 0x00,
+ 0x01, 0x00, 0x00, 0x00, 0x00, 0x03, 0x14, 0x00, 0xFF, 0x01, 0x1F, 0x00,
+ 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
+ 0x01, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x20, 0x00, 0x00, 0x00,
+ 0x20, 0x02, 0x00, 0x00, 0x01, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05,
+ 0x20, 0x00, 0x00, 0x00, 0x20, 0x02, 0x00, 0x00,
+};
+
+static_assert(sizeof(s_default_security) == 0x50);
+
+static inline u32 sid_length(const struct SID *sid)
+{
+ return struct_size(sid, SubAuthority, sid->SubAuthorityCount);
+}
+
+/*
+ * Thanks Mark Harmstone for idea
+ */
+static bool is_acl_valid(const struct ACL *acl, u32 len)
+{
+ const struct ACE_HEADER *ace;
+ u32 i;
+ u16 ace_count, ace_size;
+
+ if (acl->AclRevision != ACL_REVISION &&
+ acl->AclRevision != ACL_REVISION_DS) {
+ /*
+ * This value should be ACL_REVISION, unless the ACL contains an
+ * object-specific ACE, in which case this value must be ACL_REVISION_DS.
+ * All ACEs in an ACL must be at the same revision level.
+ */
+ return false;
+ }
+
+ if (acl->Sbz1)
+ return false;
+
+ if (le16_to_cpu(acl->AclSize) > len)
+ return false;
+
+ if (acl->Sbz2)
+ return false;
+
+ len -= sizeof(struct ACL);
+ ace = (struct ACE_HEADER *)&acl[1];
+ ace_count = le16_to_cpu(acl->AceCount);
+
+ for (i = 0; i < ace_count; i++) {
+ if (len < sizeof(struct ACE_HEADER))
+ return false;
+
+ ace_size = le16_to_cpu(ace->AceSize);
+ if (len < ace_size)
+ return false;
+
+ len -= ace_size;
+ ace = Add2Ptr(ace, ace_size);
+ }
+
+ return true;
+}
+
+bool is_sd_valid(const struct SECURITY_DESCRIPTOR_RELATIVE *sd, u32 len)
+{
+ u32 sd_owner, sd_group, sd_sacl, sd_dacl;
+
+ if (len < sizeof(struct SECURITY_DESCRIPTOR_RELATIVE))
+ return false;
+
+ if (sd->Revision != 1)
+ return false;
+
+ if (sd->Sbz1)
+ return false;
+
+ if (!(sd->Control & SE_SELF_RELATIVE))
+ return false;
+
+ sd_owner = le32_to_cpu(sd->Owner);
+ if (sd_owner) {
+ const struct SID *owner = Add2Ptr(sd, sd_owner);
+
+ if (sd_owner + offsetof(struct SID, SubAuthority) > len)
+ return false;
+
+ if (owner->Revision != 1)
+ return false;
+
+ if (sd_owner + sid_length(owner) > len)
+ return false;
+ }
+
+ sd_group = le32_to_cpu(sd->Group);
+ if (sd_group) {
+ const struct SID *group = Add2Ptr(sd, sd_group);
+
+ if (sd_group + offsetof(struct SID, SubAuthority) > len)
+ return false;
+
+ if (group->Revision != 1)
+ return false;
+
+ if (sd_group + sid_length(group) > len)
+ return false;
+ }
+
+ sd_sacl = le32_to_cpu(sd->Sacl);
+ if (sd_sacl) {
+ const struct ACL *sacl = Add2Ptr(sd, sd_sacl);
+
+ if (sd_sacl + sizeof(struct ACL) > len)
+ return false;
+
+ if (!is_acl_valid(sacl, len - sd_sacl))
+ return false;
+ }
+
+ sd_dacl = le32_to_cpu(sd->Dacl);
+ if (sd_dacl) {
+ const struct ACL *dacl = Add2Ptr(sd, sd_dacl);
+
+ if (sd_dacl + sizeof(struct ACL) > len)
+ return false;
+
+ if (!is_acl_valid(dacl, len - sd_dacl))
+ return false;
+ }
+
+ return true;
+}
+
+/*
+ * ntfs_security_init
+ *
+ * loads and parse $Secure
+ */
+int ntfs_security_init(struct ntfs_sb_info *sbi)
+{
+ int err;
+ struct super_block *sb = sbi->sb;
+ struct inode *inode;
+ struct ntfs_inode *ni;
+ struct MFT_REF ref;
+ struct ATTRIB *attr;
+ struct ATTR_LIST_ENTRY *le;
+ u64 sds_size;
+ size_t cnt, off;
+ struct NTFS_DE *ne;
+ struct NTFS_DE_SII *sii_e;
+ struct ntfs_fnd *fnd_sii = NULL;
+ const struct INDEX_ROOT *root_sii;
+ const struct INDEX_ROOT *root_sdh;
+ struct ntfs_index *indx_sdh = &sbi->security.index_sdh;
+ struct ntfs_index *indx_sii = &sbi->security.index_sii;
+
+ ref.low = cpu_to_le32(MFT_REC_SECURE);
+ ref.high = 0;
+ ref.seq = cpu_to_le16(MFT_REC_SECURE);
+
+ inode = ntfs_iget5(sb, &ref, &NAME_SECURE);
+ if (IS_ERR(inode)) {
+ err = PTR_ERR(inode);
+ ntfs_err(sb, "Failed to load $Secure.");
+ inode = NULL;
+ goto out;
+ }
+
+ ni = ntfs_i(inode);
+
+ le = NULL;
+
+ attr = ni_find_attr(ni, NULL, &le, ATTR_ROOT, SDH_NAME,
+ ARRAY_SIZE(SDH_NAME), NULL, NULL);
+ if (!attr) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ root_sdh = resident_data(attr);
+ if (root_sdh->type != ATTR_ZERO ||
+ root_sdh->rule != NTFS_COLLATION_TYPE_SECURITY_HASH) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ err = indx_init(indx_sdh, sbi, attr, INDEX_MUTEX_SDH);
+ if (err)
+ goto out;
+
+ attr = ni_find_attr(ni, attr, &le, ATTR_ROOT, SII_NAME,
+ ARRAY_SIZE(SII_NAME), NULL, NULL);
+ if (!attr) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ root_sii = resident_data(attr);
+ if (root_sii->type != ATTR_ZERO ||
+ root_sii->rule != NTFS_COLLATION_TYPE_UINT) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ err = indx_init(indx_sii, sbi, attr, INDEX_MUTEX_SII);
+ if (err)
+ goto out;
+
+ fnd_sii = fnd_get();
+ if (!fnd_sii) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ sds_size = inode->i_size;
+
+ /* Find the last valid Id */
+ sbi->security.next_id = SECURITY_ID_FIRST;
+ /* Always write new security at the end of bucket */
+ sbi->security.next_off =
+ Quad2Align(sds_size - SecurityDescriptorsBlockSize);
+
+ cnt = 0;
+ off = 0;
+ ne = NULL;
+
+ for (;;) {
+ u32 next_id;
+
+ err = indx_find_raw(indx_sii, ni, root_sii, &ne, &off, fnd_sii);
+ if (err || !ne)
+ break;
+
+ sii_e = (struct NTFS_DE_SII *)ne;
+ if (le16_to_cpu(ne->view.data_size) < SIZEOF_SECURITY_HDR)
+ continue;
+
+ next_id = le32_to_cpu(sii_e->sec_id) + 1;
+ if (next_id >= sbi->security.next_id)
+ sbi->security.next_id = next_id;
+
+ cnt += 1;
+ }
+
+ sbi->security.ni = ni;
+ inode = NULL;
+out:
+ iput(inode);
+ fnd_put(fnd_sii);
+
+ return err;
+}
+
+/*
+ * ntfs_get_security_by_id
+ *
+ * reads security descriptor by id
+ */
+int ntfs_get_security_by_id(struct ntfs_sb_info *sbi, __le32 security_id,
+ struct SECURITY_DESCRIPTOR_RELATIVE **sd,
+ size_t *size)
+{
+ int err;
+ int diff;
+ struct ntfs_inode *ni = sbi->security.ni;
+ struct ntfs_index *indx = &sbi->security.index_sii;
+ void *p = NULL;
+ struct NTFS_DE_SII *sii_e;
+ struct ntfs_fnd *fnd_sii;
+ struct SECURITY_HDR d_security;
+ const struct INDEX_ROOT *root_sii;
+ u32 t32;
+
+ *sd = NULL;
+
+ mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_SECURITY);
+
+ fnd_sii = fnd_get();
+ if (!fnd_sii) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ root_sii = indx_get_root(indx, ni, NULL, NULL);
+ if (!root_sii) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ /* Try to find this SECURITY descriptor in SII indexes */
+ err = indx_find(indx, ni, root_sii, &security_id, sizeof(security_id),
+ NULL, &diff, (struct NTFS_DE **)&sii_e, fnd_sii);
+ if (err)
+ goto out;
+
+ if (diff)
+ goto out;
+
+ t32 = le32_to_cpu(sii_e->sec_hdr.size);
+ if (t32 < SIZEOF_SECURITY_HDR) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ if (t32 > SIZEOF_SECURITY_HDR + 0x10000) {
+ /*
+ * looks like too big security. 0x10000 - is arbitrary big number
+ */
+ err = -EFBIG;
+ goto out;
+ }
+
+ *size = t32 - SIZEOF_SECURITY_HDR;
+
+ p = ntfs_malloc(*size);
+ if (!p) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ err = ntfs_read_run_nb(sbi, &ni->file.run,
+ le64_to_cpu(sii_e->sec_hdr.off), &d_security,
+ sizeof(d_security), NULL);
+ if (err)
+ goto out;
+
+ if (memcmp(&d_security, &sii_e->sec_hdr, SIZEOF_SECURITY_HDR)) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ err = ntfs_read_run_nb(sbi, &ni->file.run,
+ le64_to_cpu(sii_e->sec_hdr.off) +
+ SIZEOF_SECURITY_HDR,
+ p, *size, NULL);
+ if (err)
+ goto out;
+
+ *sd = p;
+ p = NULL;
+
+out:
+ ntfs_free(p);
+ fnd_put(fnd_sii);
+ ni_unlock(ni);
+
+ return err;
+}
+
+/*
+ * ntfs_insert_security
+ *
+ * inserts security descriptor into $Secure::SDS
+ *
+ * SECURITY Descriptor Stream data is organized into chunks of 256K bytes
+ * and it contains a mirror copy of each security descriptor. When writing
+ * to a security descriptor at location X, another copy will be written at
+ * location (X+256K).
+ * When writing a security descriptor that will cross the 256K boundary,
+ * the pointer will be advanced by 256K to skip
+ * over the mirror portion.
+ */
+int ntfs_insert_security(struct ntfs_sb_info *sbi,
+ const struct SECURITY_DESCRIPTOR_RELATIVE *sd,
+ u32 size_sd, __le32 *security_id, bool *inserted)
+{
+ int err, diff;
+ struct ntfs_inode *ni = sbi->security.ni;
+ struct ntfs_index *indx_sdh = &sbi->security.index_sdh;
+ struct ntfs_index *indx_sii = &sbi->security.index_sii;
+ struct NTFS_DE_SDH *e;
+ struct NTFS_DE_SDH sdh_e;
+ struct NTFS_DE_SII sii_e;
+ struct SECURITY_HDR *d_security;
+ u32 new_sec_size = size_sd + SIZEOF_SECURITY_HDR;
+ u32 aligned_sec_size = Quad2Align(new_sec_size);
+ struct SECURITY_KEY hash_key;
+ struct ntfs_fnd *fnd_sdh = NULL;
+ const struct INDEX_ROOT *root_sdh;
+ const struct INDEX_ROOT *root_sii;
+ u64 mirr_off, new_sds_size;
+ u32 next, left;
+
+ static_assert((1 << Log2OfSecurityDescriptorsBlockSize) ==
+ SecurityDescriptorsBlockSize);
+
+ hash_key.hash = security_hash(sd, size_sd);
+ hash_key.sec_id = SECURITY_ID_INVALID;
+
+ if (inserted)
+ *inserted = false;
+ *security_id = SECURITY_ID_INVALID;
+
+ /* Allocate a temporal buffer*/
+ d_security = ntfs_zalloc(aligned_sec_size);
+ if (!d_security)
+ return -ENOMEM;
+
+ mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_SECURITY);
+
+ fnd_sdh = fnd_get();
+ if (!fnd_sdh) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ root_sdh = indx_get_root(indx_sdh, ni, NULL, NULL);
+ if (!root_sdh) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ root_sii = indx_get_root(indx_sii, ni, NULL, NULL);
+ if (!root_sii) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ /*
+ * Check if such security already exists
+ * use "SDH" and hash -> to get the offset in "SDS"
+ */
+ err = indx_find(indx_sdh, ni, root_sdh, &hash_key, sizeof(hash_key),
+ &d_security->key.sec_id, &diff, (struct NTFS_DE **)&e,
+ fnd_sdh);
+ if (err)
+ goto out;
+
+ while (e) {
+ if (le32_to_cpu(e->sec_hdr.size) == new_sec_size) {
+ err = ntfs_read_run_nb(sbi, &ni->file.run,
+ le64_to_cpu(e->sec_hdr.off),
+ d_security, new_sec_size, NULL);
+ if (err)
+ goto out;
+
+ if (le32_to_cpu(d_security->size) == new_sec_size &&
+ d_security->key.hash == hash_key.hash &&
+ !memcmp(d_security + 1, sd, size_sd)) {
+ *security_id = d_security->key.sec_id;
+ /*such security already exists*/
+ err = 0;
+ goto out;
+ }
+ }
+
+ err = indx_find_sort(indx_sdh, ni, root_sdh,
+ (struct NTFS_DE **)&e, fnd_sdh);
+ if (err)
+ goto out;
+
+ if (!e || e->key.hash != hash_key.hash)
+ break;
+ }
+
+ /* Zero unused space */
+ next = sbi->security.next_off & (SecurityDescriptorsBlockSize - 1);
+ left = SecurityDescriptorsBlockSize - next;
+
+ /* Zero gap until SecurityDescriptorsBlockSize */
+ if (left < new_sec_size) {
+ /* zero "left" bytes from sbi->security.next_off */
+ sbi->security.next_off += SecurityDescriptorsBlockSize + left;
+ }
+
+ /* Zero tail of previous security */
+ //used = ni->vfs_inode.i_size & (SecurityDescriptorsBlockSize - 1);
+
+ /*
+ * Example:
+ * 0x40438 == ni->vfs_inode.i_size
+ * 0x00440 == sbi->security.next_off
+ * need to zero [0x438-0x440)
+ * if (next > used) {
+ * u32 tozero = next - used;
+ * zero "tozero" bytes from sbi->security.next_off - tozero
+ */
+
+ /* format new security descriptor */
+ d_security->key.hash = hash_key.hash;
+ d_security->key.sec_id = cpu_to_le32(sbi->security.next_id);
+ d_security->off = cpu_to_le64(sbi->security.next_off);
+ d_security->size = cpu_to_le32(new_sec_size);
+ memcpy(d_security + 1, sd, size_sd);
+
+ /* Write main SDS bucket */
+ err = ntfs_sb_write_run(sbi, &ni->file.run, sbi->security.next_off,
+ d_security, aligned_sec_size);
+
+ if (err)
+ goto out;
+
+ mirr_off = sbi->security.next_off + SecurityDescriptorsBlockSize;
+ new_sds_size = mirr_off + aligned_sec_size;
+
+ if (new_sds_size > ni->vfs_inode.i_size) {
+ err = attr_set_size(ni, ATTR_DATA, SDS_NAME,
+ ARRAY_SIZE(SDS_NAME), &ni->file.run,
+ new_sds_size, &new_sds_size, false, NULL);
+ if (err)
+ goto out;
+ }
+
+ /* Write copy SDS bucket */
+ err = ntfs_sb_write_run(sbi, &ni->file.run, mirr_off, d_security,
+ aligned_sec_size);
+ if (err)
+ goto out;
+
+ /* Fill SII entry */
+ sii_e.de.view.data_off =
+ cpu_to_le16(offsetof(struct NTFS_DE_SII, sec_hdr));
+ sii_e.de.view.data_size = cpu_to_le16(SIZEOF_SECURITY_HDR);
+ sii_e.de.view.res = 0;
+ sii_e.de.size = cpu_to_le16(SIZEOF_SII_DIRENTRY);
+ sii_e.de.key_size = cpu_to_le16(sizeof(d_security->key.sec_id));
+ sii_e.de.flags = 0;
+ sii_e.de.res = 0;
+ sii_e.sec_id = d_security->key.sec_id;
+ memcpy(&sii_e.sec_hdr, d_security, SIZEOF_SECURITY_HDR);
+
+ err = indx_insert_entry(indx_sii, ni, &sii_e.de, NULL, NULL);
+ if (err)
+ goto out;
+
+ /* Fill SDH entry */
+ sdh_e.de.view.data_off =
+ cpu_to_le16(offsetof(struct NTFS_DE_SDH, sec_hdr));
+ sdh_e.de.view.data_size = cpu_to_le16(SIZEOF_SECURITY_HDR);
+ sdh_e.de.view.res = 0;
+ sdh_e.de.size = cpu_to_le16(SIZEOF_SDH_DIRENTRY);
+ sdh_e.de.key_size = cpu_to_le16(sizeof(sdh_e.key));
+ sdh_e.de.flags = 0;
+ sdh_e.de.res = 0;
+ sdh_e.key.hash = d_security->key.hash;
+ sdh_e.key.sec_id = d_security->key.sec_id;
+ memcpy(&sdh_e.sec_hdr, d_security, SIZEOF_SECURITY_HDR);
+ sdh_e.magic[0] = cpu_to_le16('I');
+ sdh_e.magic[1] = cpu_to_le16('I');
+
+ fnd_clear(fnd_sdh);
+ err = indx_insert_entry(indx_sdh, ni, &sdh_e.de, (void *)(size_t)1,
+ fnd_sdh);
+ if (err)
+ goto out;
+
+ *security_id = d_security->key.sec_id;
+ if (inserted)
+ *inserted = true;
+
+ /* Update Id and offset for next descriptor */
+ sbi->security.next_id += 1;
+ sbi->security.next_off += aligned_sec_size;
+
+out:
+ fnd_put(fnd_sdh);
+ mark_inode_dirty(&ni->vfs_inode);
+ ni_unlock(ni);
+ ntfs_free(d_security);
+
+ return err;
+}
+
+/*
+ * ntfs_reparse_init
+ *
+ * loads and parse $Extend/$Reparse
+ */
+int ntfs_reparse_init(struct ntfs_sb_info *sbi)
+{
+ int err;
+ struct ntfs_inode *ni = sbi->reparse.ni;
+ struct ntfs_index *indx = &sbi->reparse.index_r;
+ struct ATTRIB *attr;
+ struct ATTR_LIST_ENTRY *le;
+ const struct INDEX_ROOT *root_r;
+
+ if (!ni)
+ return 0;
+
+ le = NULL;
+ attr = ni_find_attr(ni, NULL, &le, ATTR_ROOT, SR_NAME,
+ ARRAY_SIZE(SR_NAME), NULL, NULL);
+ if (!attr) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ root_r = resident_data(attr);
+ if (root_r->type != ATTR_ZERO ||
+ root_r->rule != NTFS_COLLATION_TYPE_UINTS) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ err = indx_init(indx, sbi, attr, INDEX_MUTEX_SR);
+ if (err)
+ goto out;
+
+out:
+ return err;
+}
+
+/*
+ * ntfs_objid_init
+ *
+ * loads and parse $Extend/$ObjId
+ */
+int ntfs_objid_init(struct ntfs_sb_info *sbi)
+{
+ int err;
+ struct ntfs_inode *ni = sbi->objid.ni;
+ struct ntfs_index *indx = &sbi->objid.index_o;
+ struct ATTRIB *attr;
+ struct ATTR_LIST_ENTRY *le;
+ const struct INDEX_ROOT *root;
+
+ if (!ni)
+ return 0;
+
+ le = NULL;
+ attr = ni_find_attr(ni, NULL, &le, ATTR_ROOT, SO_NAME,
+ ARRAY_SIZE(SO_NAME), NULL, NULL);
+ if (!attr) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ root = resident_data(attr);
+ if (root->type != ATTR_ZERO ||
+ root->rule != NTFS_COLLATION_TYPE_UINTS) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ err = indx_init(indx, sbi, attr, INDEX_MUTEX_SO);
+ if (err)
+ goto out;
+
+out:
+ return err;
+}
+
+int ntfs_objid_remove(struct ntfs_sb_info *sbi, struct GUID *guid)
+{
+ int err;
+ struct ntfs_inode *ni = sbi->objid.ni;
+ struct ntfs_index *indx = &sbi->objid.index_o;
+
+ if (!ni)
+ return -EINVAL;
+
+ mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_OBJID);
+
+ err = indx_delete_entry(indx, ni, guid, sizeof(*guid), NULL);
+
+ mark_inode_dirty(&ni->vfs_inode);
+ ni_unlock(ni);
+
+ return err;
+}
+
+int ntfs_insert_reparse(struct ntfs_sb_info *sbi, __le32 rtag,
+ const struct MFT_REF *ref)
+{
+ int err;
+ struct ntfs_inode *ni = sbi->reparse.ni;
+ struct ntfs_index *indx = &sbi->reparse.index_r;
+ struct NTFS_DE_R re;
+
+ if (!ni)
+ return -EINVAL;
+
+ memset(&re, 0, sizeof(re));
+
+ re.de.view.data_off = cpu_to_le16(offsetof(struct NTFS_DE_R, zero));
+ re.de.size = cpu_to_le16(sizeof(struct NTFS_DE_R));
+ re.de.key_size = cpu_to_le16(sizeof(re.key));
+
+ re.key.ReparseTag = rtag;
+ memcpy(&re.key.ref, ref, sizeof(*ref));
+
+ mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_REPARSE);
+
+ err = indx_insert_entry(indx, ni, &re.de, NULL, NULL);
+
+ mark_inode_dirty(&ni->vfs_inode);
+ ni_unlock(ni);
+
+ return err;
+}
+
+int ntfs_remove_reparse(struct ntfs_sb_info *sbi, __le32 rtag,
+ const struct MFT_REF *ref)
+{
+ int err, diff;
+ struct ntfs_inode *ni = sbi->reparse.ni;
+ struct ntfs_index *indx = &sbi->reparse.index_r;
+ struct ntfs_fnd *fnd = NULL;
+ struct REPARSE_KEY rkey;
+ struct NTFS_DE_R *re;
+ struct INDEX_ROOT *root_r;
+
+ if (!ni)
+ return -EINVAL;
+
+ rkey.ReparseTag = rtag;
+ rkey.ref = *ref;
+
+ mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_REPARSE);
+
+ if (rtag) {
+ err = indx_delete_entry(indx, ni, &rkey, sizeof(rkey), NULL);
+ goto out1;
+ }
+
+ fnd = fnd_get();
+ if (!fnd) {
+ err = -ENOMEM;
+ goto out1;
+ }
+
+ root_r = indx_get_root(indx, ni, NULL, NULL);
+ if (!root_r) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ /* 1 - forces to ignore rkey.ReparseTag when comparing keys */
+ err = indx_find(indx, ni, root_r, &rkey, sizeof(rkey), (void *)1, &diff,
+ (struct NTFS_DE **)&re, fnd);
+ if (err)
+ goto out;
+
+ if (memcmp(&re->key.ref, ref, sizeof(*ref))) {
+ /* Impossible. Looks like volume corrupt?*/
+ goto out;
+ }
+
+ memcpy(&rkey, &re->key, sizeof(rkey));
+
+ fnd_put(fnd);
+ fnd = NULL;
+
+ err = indx_delete_entry(indx, ni, &rkey, sizeof(rkey), NULL);
+ if (err)
+ goto out;
+
+out:
+ fnd_put(fnd);
+
+out1:
+ mark_inode_dirty(&ni->vfs_inode);
+ ni_unlock(ni);
+
+ return err;
+}
+
+static inline void ntfs_unmap_and_discard(struct ntfs_sb_info *sbi, CLST lcn,
+ CLST len)
+{
+ ntfs_unmap_meta(sbi->sb, lcn, len);
+ ntfs_discard(sbi, lcn, len);
+}
+
+void mark_as_free_ex(struct ntfs_sb_info *sbi, CLST lcn, CLST len, bool trim)
+{
+ CLST end, i;
+ struct wnd_bitmap *wnd = &sbi->used.bitmap;
+
+ down_write_nested(&wnd->rw_lock, BITMAP_MUTEX_CLUSTERS);
+ if (!wnd_is_used(wnd, lcn, len)) {
+ ntfs_set_state(sbi, NTFS_DIRTY_ERROR);
+
+ end = lcn + len;
+ len = 0;
+ for (i = lcn; i < end; i++) {
+ if (wnd_is_used(wnd, i, 1)) {
+ if (!len)
+ lcn = i;
+ len += 1;
+ continue;
+ }
+
+ if (!len)
+ continue;
+
+ if (trim)
+ ntfs_unmap_and_discard(sbi, lcn, len);
+
+ wnd_set_free(wnd, lcn, len);
+ len = 0;
+ }
+
+ if (!len)
+ goto out;
+ }
+
+ if (trim)
+ ntfs_unmap_and_discard(sbi, lcn, len);
+ wnd_set_free(wnd, lcn, len);
+
+out:
+ up_write(&wnd->rw_lock);
+}
+
+/*
+ * run_deallocate
+ *
+ * deallocate clusters
+ */
+int run_deallocate(struct ntfs_sb_info *sbi, struct runs_tree *run, bool trim)
+{
+ CLST lcn, len;
+ size_t idx = 0;
+
+ while (run_get_entry(run, idx++, NULL, &lcn, &len)) {
+ if (lcn == SPARSE_LCN)
+ continue;
+
+ mark_as_free_ex(sbi, lcn, len, trim);
+ }
+
+ return 0;
+}
diff --git a/fs/ntfs3/index.c b/fs/ntfs3/index.c
new file mode 100644
index 000000000000..6aa9540ece47
--- /dev/null
+++ b/fs/ntfs3/index.c
@@ -0,0 +1,2647 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ *
+ * Copyright (C) 2019-2021 Paragon Software GmbH, All rights reserved.
+ *
+ */
+
+#include <linux/blkdev.h>
+#include <linux/buffer_head.h>
+#include <linux/fs.h>
+#include <linux/nls.h>
+
+#include "debug.h"
+#include "ntfs.h"
+#include "ntfs_fs.h"
+
+static const struct INDEX_NAMES {
+ const __le16 *name;
+ u8 name_len;
+} s_index_names[INDEX_MUTEX_TOTAL] = {
+ { I30_NAME, ARRAY_SIZE(I30_NAME) }, { SII_NAME, ARRAY_SIZE(SII_NAME) },
+ { SDH_NAME, ARRAY_SIZE(SDH_NAME) }, { SO_NAME, ARRAY_SIZE(SO_NAME) },
+ { SQ_NAME, ARRAY_SIZE(SQ_NAME) }, { SR_NAME, ARRAY_SIZE(SR_NAME) },
+};
+
+/*
+ * compare two names in index
+ * if l1 != 0
+ * both names are little endian on-disk ATTR_FILE_NAME structs
+ * else
+ * key1 - cpu_str, key2 - ATTR_FILE_NAME
+ */
+static int cmp_fnames(const void *key1, size_t l1, const void *key2, size_t l2,
+ const void *data)
+{
+ const struct ATTR_FILE_NAME *f2 = key2;
+ const struct ntfs_sb_info *sbi = data;
+ const struct ATTR_FILE_NAME *f1;
+ u16 fsize2;
+ bool both_case;
+
+ if (l2 <= offsetof(struct ATTR_FILE_NAME, name))
+ return -1;
+
+ fsize2 = fname_full_size(f2);
+ if (l2 < fsize2)
+ return -1;
+
+ both_case = f2->type != FILE_NAME_DOS /*&& !sbi->options.nocase*/;
+ if (!l1) {
+ const struct le_str *s2 = (struct le_str *)&f2->name_len;
+
+ /*
+ * If names are equal (case insensitive)
+ * try to compare it case sensitive
+ */
+ return ntfs_cmp_names_cpu(key1, s2, sbi->upcase, both_case);
+ }
+
+ f1 = key1;
+ return ntfs_cmp_names(f1->name, f1->name_len, f2->name, f2->name_len,
+ sbi->upcase, both_case);
+}
+
+/* $SII of $Secure and $Q of Quota */
+static int cmp_uint(const void *key1, size_t l1, const void *key2, size_t l2,
+ const void *data)
+{
+ const u32 *k1 = key1;
+ const u32 *k2 = key2;
+
+ if (l2 < sizeof(u32))
+ return -1;
+
+ if (*k1 < *k2)
+ return -1;
+ if (*k1 > *k2)
+ return 1;
+ return 0;
+}
+
+/* $SDH of $Secure */
+static int cmp_sdh(const void *key1, size_t l1, const void *key2, size_t l2,
+ const void *data)
+{
+ const struct SECURITY_KEY *k1 = key1;
+ const struct SECURITY_KEY *k2 = key2;
+ u32 t1, t2;
+
+ if (l2 < sizeof(struct SECURITY_KEY))
+ return -1;
+
+ t1 = le32_to_cpu(k1->hash);
+ t2 = le32_to_cpu(k2->hash);
+
+ /* First value is a hash value itself */
+ if (t1 < t2)
+ return -1;
+ if (t1 > t2)
+ return 1;
+
+ /* Second value is security Id */
+ if (data) {
+ t1 = le32_to_cpu(k1->sec_id);
+ t2 = le32_to_cpu(k2->sec_id);
+ if (t1 < t2)
+ return -1;
+ if (t1 > t2)
+ return 1;
+ }
+
+ return 0;
+}
+
+/* $O of ObjId and "$R" for Reparse */
+static int cmp_uints(const void *key1, size_t l1, const void *key2, size_t l2,
+ const void *data)
+{
+ const __le32 *k1 = key1;
+ const __le32 *k2 = key2;
+ size_t count;
+
+ if ((size_t)data == 1) {
+ /*
+ * ni_delete_all -> ntfs_remove_reparse -> delete all with this reference
+ * k1, k2 - pointers to REPARSE_KEY
+ */
+
+ k1 += 1; // skip REPARSE_KEY.ReparseTag
+ k2 += 1; // skip REPARSE_KEY.ReparseTag
+ if (l2 <= sizeof(int))
+ return -1;
+ l2 -= sizeof(int);
+ if (l1 <= sizeof(int))
+ return 1;
+ l1 -= sizeof(int);
+ }
+
+ if (l2 < sizeof(int))
+ return -1;
+
+ for (count = min(l1, l2) >> 2; count > 0; --count, ++k1, ++k2) {
+ u32 t1 = le32_to_cpu(*k1);
+ u32 t2 = le32_to_cpu(*k2);
+
+ if (t1 > t2)
+ return 1;
+ if (t1 < t2)
+ return -1;
+ }
+
+ if (l1 > l2)
+ return 1;
+ if (l1 < l2)
+ return -1;
+
+ return 0;
+}
+
+static inline NTFS_CMP_FUNC get_cmp_func(const struct INDEX_ROOT *root)
+{
+ switch (root->type) {
+ case ATTR_NAME:
+ if (root->rule == NTFS_COLLATION_TYPE_FILENAME)
+ return &cmp_fnames;
+ break;
+ case ATTR_ZERO:
+ switch (root->rule) {
+ case NTFS_COLLATION_TYPE_UINT:
+ return &cmp_uint;
+ case NTFS_COLLATION_TYPE_SECURITY_HASH:
+ return &cmp_sdh;
+ case NTFS_COLLATION_TYPE_UINTS:
+ return &cmp_uints;
+ default:
+ break;
+ }
+ default:
+ break;
+ }
+
+ return NULL;
+}
+
+struct bmp_buf {
+ struct ATTRIB *b;
+ struct mft_inode *mi;
+ struct buffer_head *bh;
+ ulong *buf;
+ size_t bit;
+ u32 nbits;
+ u64 new_valid;
+};
+
+static int bmp_buf_get(struct ntfs_index *indx, struct ntfs_inode *ni,
+ size_t bit, struct bmp_buf *bbuf)
+{
+ struct ATTRIB *b;
+ size_t data_size, valid_size, vbo, off = bit >> 3;
+ struct ntfs_sb_info *sbi = ni->mi.sbi;
+ CLST vcn = off >> sbi->cluster_bits;
+ struct ATTR_LIST_ENTRY *le = NULL;
+ struct buffer_head *bh;
+ struct super_block *sb;
+ u32 blocksize;
+ const struct INDEX_NAMES *in = &s_index_names[indx->type];
+
+ bbuf->bh = NULL;
+
+ b = ni_find_attr(ni, NULL, &le, ATTR_BITMAP, in->name, in->name_len,
+ &vcn, &bbuf->mi);
+ bbuf->b = b;
+ if (!b)
+ return -EINVAL;
+
+ if (!b->non_res) {
+ data_size = le32_to_cpu(b->res.data_size);
+
+ if (off >= data_size)
+ return -EINVAL;
+
+ bbuf->buf = (ulong *)resident_data(b);
+ bbuf->bit = 0;
+ bbuf->nbits = data_size * 8;
+
+ return 0;
+ }
+
+ data_size = le64_to_cpu(b->nres.data_size);
+ if (WARN_ON(off >= data_size)) {
+ /* looks like filesystem error */
+ return -EINVAL;
+ }
+
+ valid_size = le64_to_cpu(b->nres.valid_size);
+
+ bh = ntfs_bread_run(sbi, &indx->bitmap_run, off);
+ if (!bh)
+ return -EIO;
+
+ if (IS_ERR(bh))
+ return PTR_ERR(bh);
+
+ bbuf->bh = bh;
+
+ if (buffer_locked(bh))
+ __wait_on_buffer(bh);
+
+ lock_buffer(bh);
+
+ sb = sbi->sb;
+ blocksize = sb->s_blocksize;
+
+ vbo = off & ~(size_t)sbi->block_mask;
+
+ bbuf->new_valid = vbo + blocksize;
+ if (bbuf->new_valid <= valid_size)
+ bbuf->new_valid = 0;
+ else if (bbuf->new_valid > data_size)
+ bbuf->new_valid = data_size;
+
+ if (vbo >= valid_size) {
+ memset(bh->b_data, 0, blocksize);
+ } else if (vbo + blocksize > valid_size) {
+ u32 voff = valid_size & sbi->block_mask;
+
+ memset(bh->b_data + voff, 0, blocksize - voff);
+ }
+
+ bbuf->buf = (ulong *)bh->b_data;
+ bbuf->bit = 8 * (off & ~(size_t)sbi->block_mask);
+ bbuf->nbits = 8 * blocksize;
+
+ return 0;
+}
+
+static void bmp_buf_put(struct bmp_buf *bbuf, bool dirty)
+{
+ struct buffer_head *bh = bbuf->bh;
+ struct ATTRIB *b = bbuf->b;
+
+ if (!bh) {
+ if (b && !b->non_res && dirty)
+ bbuf->mi->dirty = true;
+ return;
+ }
+
+ if (!dirty)
+ goto out;
+
+ if (bbuf->new_valid) {
+ b->nres.valid_size = cpu_to_le64(bbuf->new_valid);
+ bbuf->mi->dirty = true;
+ }
+
+ set_buffer_uptodate(bh);
+ mark_buffer_dirty(bh);
+
+out:
+ unlock_buffer(bh);
+ put_bh(bh);
+}
+
+/*
+ * indx_mark_used
+ *
+ * marks the bit 'bit' as used
+ */
+static int indx_mark_used(struct ntfs_index *indx, struct ntfs_inode *ni,
+ size_t bit)
+{
+ int err;
+ struct bmp_buf bbuf;
+
+ err = bmp_buf_get(indx, ni, bit, &bbuf);
+ if (err)
+ return err;
+
+ __set_bit(bit - bbuf.bit, bbuf.buf);
+
+ bmp_buf_put(&bbuf, true);
+
+ return 0;
+}
+
+/*
+ * indx_mark_free
+ *
+ * the bit 'bit' as free
+ */
+static int indx_mark_free(struct ntfs_index *indx, struct ntfs_inode *ni,
+ size_t bit)
+{
+ int err;
+ struct bmp_buf bbuf;
+
+ err = bmp_buf_get(indx, ni, bit, &bbuf);
+ if (err)
+ return err;
+
+ __clear_bit(bit - bbuf.bit, bbuf.buf);
+
+ bmp_buf_put(&bbuf, true);
+
+ return 0;
+}
+
+/*
+ * if ntfs_readdir calls this function (indx_used_bit -> scan_nres_bitmap),
+ * inode is shared locked and no ni_lock
+ * use rw_semaphore for read/write access to bitmap_run
+ */
+static int scan_nres_bitmap(struct ntfs_inode *ni, struct ATTRIB *bitmap,
+ struct ntfs_index *indx, size_t from,
+ bool (*fn)(const ulong *buf, u32 bit, u32 bits,
+ size_t *ret),
+ size_t *ret)
+{
+ struct ntfs_sb_info *sbi = ni->mi.sbi;
+ struct super_block *sb = sbi->sb;
+ struct runs_tree *run = &indx->bitmap_run;
+ struct rw_semaphore *lock = &indx->run_lock;
+ u32 nbits = sb->s_blocksize * 8;
+ u32 blocksize = sb->s_blocksize;
+ u64 valid_size = le64_to_cpu(bitmap->nres.valid_size);
+ u64 data_size = le64_to_cpu(bitmap->nres.data_size);
+ sector_t eblock = bytes_to_block(sb, data_size);
+ size_t vbo = from >> 3;
+ sector_t blk = (vbo & sbi->cluster_mask) >> sb->s_blocksize_bits;
+ sector_t vblock = vbo >> sb->s_blocksize_bits;
+ sector_t blen, block;
+ CLST lcn, clen, vcn, vcn_next;
+ size_t idx;
+ struct buffer_head *bh;
+ bool ok;
+
+ *ret = MINUS_ONE_T;
+
+ if (vblock >= eblock)
+ return 0;
+
+ from &= nbits - 1;
+ vcn = vbo >> sbi->cluster_bits;
+
+ down_read(lock);
+ ok = run_lookup_entry(run, vcn, &lcn, &clen, &idx);
+ up_read(lock);
+
+next_run:
+ if (!ok) {
+ int err;
+ const struct INDEX_NAMES *name = &s_index_names[indx->type];
+
+ down_write(lock);
+ err = attr_load_runs_vcn(ni, ATTR_BITMAP, name->name,
+ name->name_len, run, vcn);
+ up_write(lock);
+ if (err)
+ return err;
+ down_read(lock);
+ ok = run_lookup_entry(run, vcn, &lcn, &clen, &idx);
+ up_read(lock);
+ if (!ok)
+ return -EINVAL;
+ }
+
+ blen = (sector_t)clen * sbi->blocks_per_cluster;
+ block = (sector_t)lcn * sbi->blocks_per_cluster;
+
+ for (; blk < blen; blk++, from = 0) {
+ bh = ntfs_bread(sb, block + blk);
+ if (!bh)
+ return -EIO;
+
+ vbo = (u64)vblock << sb->s_blocksize_bits;
+ if (vbo >= valid_size) {
+ memset(bh->b_data, 0, blocksize);
+ } else if (vbo + blocksize > valid_size) {
+ u32 voff = valid_size & sbi->block_mask;
+
+ memset(bh->b_data + voff, 0, blocksize - voff);
+ }
+
+ if (vbo + blocksize > data_size)
+ nbits = 8 * (data_size - vbo);
+
+ ok = nbits > from ? (*fn)((ulong *)bh->b_data, from, nbits, ret)
+ : false;
+ put_bh(bh);
+
+ if (ok) {
+ *ret += 8 * vbo;
+ return 0;
+ }
+
+ if (++vblock >= eblock) {
+ *ret = MINUS_ONE_T;
+ return 0;
+ }
+ }
+ blk = 0;
+ vcn_next = vcn + clen;
+ down_read(lock);
+ ok = run_get_entry(run, ++idx, &vcn, &lcn, &clen) && vcn == vcn_next;
+ if (!ok)
+ vcn = vcn_next;
+ up_read(lock);
+ goto next_run;
+}
+
+static bool scan_for_free(const ulong *buf, u32 bit, u32 bits, size_t *ret)
+{
+ size_t pos = find_next_zero_bit(buf, bits, bit);
+
+ if (pos >= bits)
+ return false;
+ *ret = pos;
+ return true;
+}
+
+/*
+ * indx_find_free
+ *
+ * looks for free bit
+ * returns -1 if no free bits
+ */
+static int indx_find_free(struct ntfs_index *indx, struct ntfs_inode *ni,
+ size_t *bit, struct ATTRIB **bitmap)
+{
+ struct ATTRIB *b;
+ struct ATTR_LIST_ENTRY *le = NULL;
+ const struct INDEX_NAMES *in = &s_index_names[indx->type];
+ int err;
+
+ b = ni_find_attr(ni, NULL, &le, ATTR_BITMAP, in->name, in->name_len,
+ NULL, NULL);
+
+ if (!b)
+ return -ENOENT;
+
+ *bitmap = b;
+ *bit = MINUS_ONE_T;
+
+ if (!b->non_res) {
+ u32 nbits = 8 * le32_to_cpu(b->res.data_size);
+ size_t pos = find_next_zero_bit(resident_data(b), nbits, 0);
+
+ if (pos < nbits)
+ *bit = pos;
+ } else {
+ err = scan_nres_bitmap(ni, b, indx, 0, &scan_for_free, bit);
+
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+static bool scan_for_used(const ulong *buf, u32 bit, u32 bits, size_t *ret)
+{
+ size_t pos = find_next_bit(buf, bits, bit);
+
+ if (pos >= bits)
+ return false;
+ *ret = pos;
+ return true;
+}
+
+/*
+ * indx_used_bit
+ *
+ * looks for used bit
+ * returns MINUS_ONE_T if no used bits
+ */
+int indx_used_bit(struct ntfs_index *indx, struct ntfs_inode *ni, size_t *bit)
+{
+ struct ATTRIB *b;
+ struct ATTR_LIST_ENTRY *le = NULL;
+ size_t from = *bit;
+ const struct INDEX_NAMES *in = &s_index_names[indx->type];
+ int err;
+
+ b = ni_find_attr(ni, NULL, &le, ATTR_BITMAP, in->name, in->name_len,
+ NULL, NULL);
+
+ if (!b)
+ return -ENOENT;
+
+ *bit = MINUS_ONE_T;
+
+ if (!b->non_res) {
+ u32 nbits = le32_to_cpu(b->res.data_size) * 8;
+ size_t pos = find_next_bit(resident_data(b), nbits, from);
+
+ if (pos < nbits)
+ *bit = pos;
+ } else {
+ err = scan_nres_bitmap(ni, b, indx, from, &scan_for_used, bit);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+/*
+ * hdr_find_split
+ *
+ * finds a point at which the index allocation buffer would like to
+ * be split.
+ * NOTE: This function should never return 'END' entry NULL returns on error
+ */
+static const struct NTFS_DE *hdr_find_split(const struct INDEX_HDR *hdr)
+{
+ size_t o;
+ const struct NTFS_DE *e = hdr_first_de(hdr);
+ u32 used_2 = le32_to_cpu(hdr->used) >> 1;
+ u16 esize = le16_to_cpu(e->size);
+
+ if (!e || de_is_last(e))
+ return NULL;
+
+ for (o = le32_to_cpu(hdr->de_off) + esize; o < used_2; o += esize) {
+ const struct NTFS_DE *p = e;
+
+ e = Add2Ptr(hdr, o);
+
+ /* We must not return END entry */
+ if (de_is_last(e))
+ return p;
+
+ esize = le16_to_cpu(e->size);
+ }
+
+ return e;
+}
+
+/*
+ * hdr_insert_head
+ *
+ * inserts some entries at the beginning of the buffer.
+ * It is used to insert entries into a newly-created buffer.
+ */
+static const struct NTFS_DE *hdr_insert_head(struct INDEX_HDR *hdr,
+ const void *ins, u32 ins_bytes)
+{
+ u32 to_move;
+ struct NTFS_DE *e = hdr_first_de(hdr);
+ u32 used = le32_to_cpu(hdr->used);
+
+ if (!e)
+ return NULL;
+
+ /* Now we just make room for the inserted entries and jam it in. */
+ to_move = used - le32_to_cpu(hdr->de_off);
+ memmove(Add2Ptr(e, ins_bytes), e, to_move);
+ memcpy(e, ins, ins_bytes);
+ hdr->used = cpu_to_le32(used + ins_bytes);
+
+ return e;
+}
+
+void fnd_clear(struct ntfs_fnd *fnd)
+{
+ int i;
+
+ for (i = 0; i < fnd->level; i++) {
+ struct indx_node *n = fnd->nodes[i];
+
+ if (!n)
+ continue;
+
+ put_indx_node(n);
+ fnd->nodes[i] = NULL;
+ }
+ fnd->level = 0;
+ fnd->root_de = NULL;
+}
+
+static int fnd_push(struct ntfs_fnd *fnd, struct indx_node *n,
+ struct NTFS_DE *e)
+{
+ int i;
+
+ i = fnd->level;
+ if (i < 0 || i >= ARRAY_SIZE(fnd->nodes))
+ return -EINVAL;
+ fnd->nodes[i] = n;
+ fnd->de[i] = e;
+ fnd->level += 1;
+ return 0;
+}
+
+static struct indx_node *fnd_pop(struct ntfs_fnd *fnd)
+{
+ struct indx_node *n;
+ int i = fnd->level;
+
+ i -= 1;
+ n = fnd->nodes[i];
+ fnd->nodes[i] = NULL;
+ fnd->level = i;
+
+ return n;
+}
+
+static bool fnd_is_empty(struct ntfs_fnd *fnd)
+{
+ if (!fnd->level)
+ return !fnd->root_de;
+
+ return !fnd->de[fnd->level - 1];
+}
+
+/*
+ * hdr_find_e
+ *
+ * locates an entry the index buffer.
+ * If no matching entry is found, it returns the first entry which is greater
+ * than the desired entry If the search key is greater than all the entries the
+ * buffer, it returns the 'end' entry. This function does a binary search of the
+ * current index buffer, for the first entry that is <= to the search value
+ * Returns NULL if error
+ */
+static struct NTFS_DE *hdr_find_e(const struct ntfs_index *indx,
+ const struct INDEX_HDR *hdr, const void *key,
+ size_t key_len, const void *ctx, int *diff)
+{
+ struct NTFS_DE *e;
+ NTFS_CMP_FUNC cmp = indx->cmp;
+ u32 e_size, e_key_len;
+ u32 end = le32_to_cpu(hdr->used);
+ u32 off = le32_to_cpu(hdr->de_off);
+
+#ifdef NTFS3_INDEX_BINARY_SEARCH
+ int max_idx = 0, fnd, min_idx;
+ int nslots = 64;
+ u16 *offs;
+
+ if (end > 0x10000)
+ goto next;
+
+ offs = ntfs_malloc(sizeof(u16) * nslots);
+ if (!offs)
+ goto next;
+
+ /* use binary search algorithm */
+next1:
+ if (off + sizeof(struct NTFS_DE) > end) {
+ e = NULL;
+ goto out1;
+ }
+ e = Add2Ptr(hdr, off);
+ e_size = le16_to_cpu(e->size);
+
+ if (e_size < sizeof(struct NTFS_DE) || off + e_size > end) {
+ e = NULL;
+ goto out1;
+ }
+
+ if (max_idx >= nslots) {
+ u16 *ptr;
+ int new_slots = QuadAlign(2 * nslots);
+
+ ptr = ntfs_malloc(sizeof(u16) * new_slots);
+ if (ptr)
+ memcpy(ptr, offs, sizeof(u16) * max_idx);
+ ntfs_free(offs);
+ offs = ptr;
+ nslots = new_slots;
+ if (!ptr)
+ goto next;
+ }
+
+ /* Store entry table */
+ offs[max_idx] = off;
+
+ if (!de_is_last(e)) {
+ off += e_size;
+ max_idx += 1;
+ goto next1;
+ }
+
+ /*
+ * Table of pointers is created
+ * Use binary search to find entry that is <= to the search value
+ */
+ fnd = -1;
+ min_idx = 0;
+
+ while (min_idx <= max_idx) {
+ int mid_idx = min_idx + ((max_idx - min_idx) >> 1);
+ int diff2;
+
+ e = Add2Ptr(hdr, offs[mid_idx]);
+
+ e_key_len = le16_to_cpu(e->key_size);
+
+ diff2 = (*cmp)(key, key_len, e + 1, e_key_len, ctx);
+
+ if (!diff2) {
+ *diff = 0;
+ goto out1;
+ }
+
+ if (diff2 < 0) {
+ max_idx = mid_idx - 1;
+ fnd = mid_idx;
+ if (!fnd)
+ break;
+ } else {
+ min_idx = mid_idx + 1;
+ }
+ }
+
+ if (fnd == -1) {
+ e = NULL;
+ goto out1;
+ }
+
+ *diff = -1;
+ e = Add2Ptr(hdr, offs[fnd]);
+
+out1:
+ ntfs_free(offs);
+
+ return e;
+#endif
+
+next:
+ /*
+ * Entries index are sorted
+ * Enumerate all entries until we find entry that is <= to the search value
+ */
+ if (off + sizeof(struct NTFS_DE) > end)
+ return NULL;
+
+ e = Add2Ptr(hdr, off);
+ e_size = le16_to_cpu(e->size);
+
+ if (e_size < sizeof(struct NTFS_DE) || off + e_size > end)
+ return NULL;
+
+ off += e_size;
+
+ e_key_len = le16_to_cpu(e->key_size);
+
+ *diff = (*cmp)(key, key_len, e + 1, e_key_len, ctx);
+ if (!*diff)
+ return e;
+
+ if (*diff <= 0)
+ return e;
+
+ if (de_is_last(e)) {
+ *diff = 1;
+ return e;
+ }
+ goto next;
+}
+
+/*
+ * hdr_insert_de
+ *
+ * inserts an index entry into the buffer.
+ * 'before' should be a pointer previously returned from hdr_find_e
+ */
+static struct NTFS_DE *hdr_insert_de(const struct ntfs_index *indx,
+ struct INDEX_HDR *hdr,
+ const struct NTFS_DE *de,
+ struct NTFS_DE *before, const void *ctx)
+{
+ int diff;
+ size_t off = PtrOffset(hdr, before);
+ u32 used = le32_to_cpu(hdr->used);
+ u32 total = le32_to_cpu(hdr->total);
+ u16 de_size = le16_to_cpu(de->size);
+
+ /* First, check to see if there's enough room */
+ if (used + de_size > total)
+ return NULL;
+
+ /* We know there's enough space, so we know we'll succeed. */
+ if (before) {
+ /* Check that before is inside Index */
+ if (off >= used || off < le32_to_cpu(hdr->de_off) ||
+ off + le16_to_cpu(before->size) > total) {
+ return NULL;
+ }
+ goto ok;
+ }
+ /* No insert point is applied. Get it manually */
+ before = hdr_find_e(indx, hdr, de + 1, le16_to_cpu(de->key_size), ctx,
+ &diff);
+ if (!before)
+ return NULL;
+ off = PtrOffset(hdr, before);
+
+ok:
+ /* Now we just make room for the entry and jam it in. */
+ memmove(Add2Ptr(before, de_size), before, used - off);
+
+ hdr->used = cpu_to_le32(used + de_size);
+ memcpy(before, de, de_size);
+
+ return before;
+}
+
+/*
+ * hdr_delete_de
+ *
+ * removes an entry from the index buffer
+ */
+static inline struct NTFS_DE *hdr_delete_de(struct INDEX_HDR *hdr,
+ struct NTFS_DE *re)
+{
+ u32 used = le32_to_cpu(hdr->used);
+ u16 esize = le16_to_cpu(re->size);
+ u32 off = PtrOffset(hdr, re);
+ int bytes = used - (off + esize);
+
+ if (off >= used || esize < sizeof(struct NTFS_DE) ||
+ bytes < sizeof(struct NTFS_DE))
+ return NULL;
+
+ hdr->used = cpu_to_le32(used - esize);
+ memmove(re, Add2Ptr(re, esize), bytes);
+
+ return re;
+}
+
+void indx_clear(struct ntfs_index *indx)
+{
+ run_close(&indx->alloc_run);
+ run_close(&indx->bitmap_run);
+}
+
+int indx_init(struct ntfs_index *indx, struct ntfs_sb_info *sbi,
+ const struct ATTRIB *attr, enum index_mutex_classed type)
+{
+ u32 t32;
+ const struct INDEX_ROOT *root = resident_data(attr);
+
+ /* Check root fields */
+ if (!root->index_block_clst)
+ return -EINVAL;
+
+ indx->type = type;
+ indx->idx2vbn_bits = __ffs(root->index_block_clst);
+
+ t32 = le32_to_cpu(root->index_block_size);
+ indx->index_bits = blksize_bits(t32);
+
+ /* Check index record size */
+ if (t32 < sbi->cluster_size) {
+ /* index record is smaller than a cluster, use 512 blocks */
+ if (t32 != root->index_block_clst * SECTOR_SIZE)
+ return -EINVAL;
+
+ /* Check alignment to a cluster */
+ if ((sbi->cluster_size >> SECTOR_SHIFT) &
+ (root->index_block_clst - 1)) {
+ return -EINVAL;
+ }
+
+ indx->vbn2vbo_bits = SECTOR_SHIFT;
+ } else {
+ /* index record must be a multiple of cluster size */
+ if (t32 != root->index_block_clst << sbi->cluster_bits)
+ return -EINVAL;
+
+ indx->vbn2vbo_bits = sbi->cluster_bits;
+ }
+
+ init_rwsem(&indx->run_lock);
+
+ indx->cmp = get_cmp_func(root);
+ return indx->cmp ? 0 : -EINVAL;
+}
+
+static struct indx_node *indx_new(struct ntfs_index *indx,
+ struct ntfs_inode *ni, CLST vbn,
+ const __le64 *sub_vbn)
+{
+ int err;
+ struct NTFS_DE *e;
+ struct indx_node *r;
+ struct INDEX_HDR *hdr;
+ struct INDEX_BUFFER *index;
+ u64 vbo = (u64)vbn << indx->vbn2vbo_bits;
+ u32 bytes = 1u << indx->index_bits;
+ u16 fn;
+ u32 eo;
+
+ r = ntfs_zalloc(sizeof(struct indx_node));
+ if (!r)
+ return ERR_PTR(-ENOMEM);
+
+ index = ntfs_zalloc(bytes);
+ if (!index) {
+ ntfs_free(r);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ err = ntfs_get_bh(ni->mi.sbi, &indx->alloc_run, vbo, bytes, &r->nb);
+
+ if (err) {
+ ntfs_free(index);
+ ntfs_free(r);
+ return ERR_PTR(err);
+ }
+
+ /* Create header */
+ index->rhdr.sign = NTFS_INDX_SIGNATURE;
+ index->rhdr.fix_off = cpu_to_le16(sizeof(struct INDEX_BUFFER)); // 0x28
+ fn = (bytes >> SECTOR_SHIFT) + 1; // 9
+ index->rhdr.fix_num = cpu_to_le16(fn);
+ index->vbn = cpu_to_le64(vbn);
+ hdr = &index->ihdr;
+ eo = QuadAlign(sizeof(struct INDEX_BUFFER) + fn * sizeof(short));
+ hdr->de_off = cpu_to_le32(eo);
+
+ e = Add2Ptr(hdr, eo);
+
+ if (sub_vbn) {
+ e->flags = NTFS_IE_LAST | NTFS_IE_HAS_SUBNODES;
+ e->size = cpu_to_le16(sizeof(struct NTFS_DE) + sizeof(u64));
+ hdr->used =
+ cpu_to_le32(eo + sizeof(struct NTFS_DE) + sizeof(u64));
+ de_set_vbn_le(e, *sub_vbn);
+ hdr->flags = 1;
+ } else {
+ e->size = cpu_to_le16(sizeof(struct NTFS_DE));
+ hdr->used = cpu_to_le32(eo + sizeof(struct NTFS_DE));
+ e->flags = NTFS_IE_LAST;
+ }
+
+ hdr->total = cpu_to_le32(bytes - offsetof(struct INDEX_BUFFER, ihdr));
+
+ r->index = index;
+ return r;
+}
+
+struct INDEX_ROOT *indx_get_root(struct ntfs_index *indx, struct ntfs_inode *ni,
+ struct ATTRIB **attr, struct mft_inode **mi)
+{
+ struct ATTR_LIST_ENTRY *le = NULL;
+ struct ATTRIB *a;
+ const struct INDEX_NAMES *in = &s_index_names[indx->type];
+
+ a = ni_find_attr(ni, NULL, &le, ATTR_ROOT, in->name, in->name_len, NULL,
+ mi);
+ if (!a)
+ return NULL;
+
+ if (attr)
+ *attr = a;
+
+ return resident_data_ex(a, sizeof(struct INDEX_ROOT));
+}
+
+static int indx_write(struct ntfs_index *indx, struct ntfs_inode *ni,
+ struct indx_node *node, int sync)
+{
+ struct INDEX_BUFFER *ib = node->index;
+
+ return ntfs_write_bh(ni->mi.sbi, &ib->rhdr, &node->nb, sync);
+}
+
+/*
+ * if ntfs_readdir calls this function
+ * inode is shared locked and no ni_lock
+ * use rw_semaphore for read/write access to alloc_run
+ */
+int indx_read(struct ntfs_index *indx, struct ntfs_inode *ni, CLST vbn,
+ struct indx_node **node)
+{
+ int err;
+ struct INDEX_BUFFER *ib;
+ struct runs_tree *run = &indx->alloc_run;
+ struct rw_semaphore *lock = &indx->run_lock;
+ u64 vbo = (u64)vbn << indx->vbn2vbo_bits;
+ u32 bytes = 1u << indx->index_bits;
+ struct indx_node *in = *node;
+ const struct INDEX_NAMES *name;
+
+ if (!in) {
+ in = ntfs_zalloc(sizeof(struct indx_node));
+ if (!in)
+ return -ENOMEM;
+ } else {
+ nb_put(&in->nb);
+ }
+
+ ib = in->index;
+ if (!ib) {
+ ib = ntfs_malloc(bytes);
+ if (!ib) {
+ err = -ENOMEM;
+ goto out;
+ }
+ }
+
+ down_read(lock);
+ err = ntfs_read_bh(ni->mi.sbi, run, vbo, &ib->rhdr, bytes, &in->nb);
+ up_read(lock);
+ if (!err)
+ goto ok;
+
+ if (err == -E_NTFS_FIXUP)
+ goto ok;
+
+ if (err != -ENOENT)
+ goto out;
+
+ name = &s_index_names[indx->type];
+ down_write(lock);
+ err = attr_load_runs_range(ni, ATTR_ALLOC, name->name, name->name_len,
+ run, vbo, vbo + bytes);
+ up_write(lock);
+ if (err)
+ goto out;
+
+ down_read(lock);
+ err = ntfs_read_bh(ni->mi.sbi, run, vbo, &ib->rhdr, bytes, &in->nb);
+ up_read(lock);
+ if (err == -E_NTFS_FIXUP)
+ goto ok;
+
+ if (err)
+ goto out;
+
+ok:
+ if (err == -E_NTFS_FIXUP) {
+ ntfs_write_bh(ni->mi.sbi, &ib->rhdr, &in->nb, 0);
+ err = 0;
+ }
+
+ in->index = ib;
+ *node = in;
+
+out:
+ if (ib != in->index)
+ ntfs_free(ib);
+
+ if (*node != in) {
+ nb_put(&in->nb);
+ ntfs_free(in);
+ }
+
+ return err;
+}
+
+/*
+ * indx_find
+ *
+ * scans NTFS directory for given entry
+ */
+int indx_find(struct ntfs_index *indx, struct ntfs_inode *ni,
+ const struct INDEX_ROOT *root, const void *key, size_t key_len,
+ const void *ctx, int *diff, struct NTFS_DE **entry,
+ struct ntfs_fnd *fnd)
+{
+ int err;
+ struct NTFS_DE *e;
+ const struct INDEX_HDR *hdr;
+ struct indx_node *node;
+
+ if (!root)
+ root = indx_get_root(&ni->dir, ni, NULL, NULL);
+
+ if (!root) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ hdr = &root->ihdr;
+
+ /* Check cache */
+ e = fnd->level ? fnd->de[fnd->level - 1] : fnd->root_de;
+ if (e && !de_is_last(e) &&
+ !(*indx->cmp)(key, key_len, e + 1, le16_to_cpu(e->key_size), ctx)) {
+ *entry = e;
+ *diff = 0;
+ return 0;
+ }
+
+ /* Soft finder reset */
+ fnd_clear(fnd);
+
+ /* Lookup entry that is <= to the search value */
+ e = hdr_find_e(indx, hdr, key, key_len, ctx, diff);
+ if (!e)
+ return -EINVAL;
+
+ if (fnd)
+ fnd->root_de = e;
+
+ err = 0;
+
+ for (;;) {
+ node = NULL;
+ if (*diff >= 0 || !de_has_vcn_ex(e)) {
+ *entry = e;
+ goto out;
+ }
+
+ /* Read next level. */
+ err = indx_read(indx, ni, de_get_vbn(e), &node);
+ if (err)
+ goto out;
+
+ /* Lookup entry that is <= to the search value */
+ e = hdr_find_e(indx, &node->index->ihdr, key, key_len, ctx,
+ diff);
+ if (!e) {
+ err = -EINVAL;
+ put_indx_node(node);
+ goto out;
+ }
+
+ fnd_push(fnd, node, e);
+ }
+
+out:
+ return err;
+}
+
+int indx_find_sort(struct ntfs_index *indx, struct ntfs_inode *ni,
+ const struct INDEX_ROOT *root, struct NTFS_DE **entry,
+ struct ntfs_fnd *fnd)
+{
+ int err;
+ struct indx_node *n = NULL;
+ struct NTFS_DE *e;
+ size_t iter = 0;
+ int level = fnd->level;
+
+ if (!*entry) {
+ /* Start find */
+ e = hdr_first_de(&root->ihdr);
+ if (!e)
+ return 0;
+ fnd_clear(fnd);
+ fnd->root_de = e;
+ } else if (!level) {
+ if (de_is_last(fnd->root_de)) {
+ *entry = NULL;
+ return 0;
+ }
+
+ e = hdr_next_de(&root->ihdr, fnd->root_de);
+ if (!e)
+ return -EINVAL;
+ fnd->root_de = e;
+ } else {
+ n = fnd->nodes[level - 1];
+ e = fnd->de[level - 1];
+
+ if (de_is_last(e))
+ goto pop_level;
+
+ e = hdr_next_de(&n->index->ihdr, e);
+ if (!e)
+ return -EINVAL;
+
+ fnd->de[level - 1] = e;
+ }
+
+ /* Just to avoid tree cycle */
+next_iter:
+ if (iter++ >= 1000)
+ return -EINVAL;
+
+ while (de_has_vcn_ex(e)) {
+ if (le16_to_cpu(e->size) <
+ sizeof(struct NTFS_DE) + sizeof(u64)) {
+ if (n) {
+ fnd_pop(fnd);
+ ntfs_free(n);
+ }
+ return -EINVAL;
+ }
+
+ /* Read next level */
+ err = indx_read(indx, ni, de_get_vbn(e), &n);
+ if (err)
+ return err;
+
+ /* Try next level */
+ e = hdr_first_de(&n->index->ihdr);
+ if (!e) {
+ ntfs_free(n);
+ return -EINVAL;
+ }
+
+ fnd_push(fnd, n, e);
+ }
+
+ if (le16_to_cpu(e->size) > sizeof(struct NTFS_DE)) {
+ *entry = e;
+ return 0;
+ }
+
+pop_level:
+ for (;;) {
+ if (!de_is_last(e))
+ goto next_iter;
+
+ /* Pop one level */
+ if (n) {
+ fnd_pop(fnd);
+ ntfs_free(n);
+ }
+
+ level = fnd->level;
+
+ if (level) {
+ n = fnd->nodes[level - 1];
+ e = fnd->de[level - 1];
+ } else if (fnd->root_de) {
+ n = NULL;
+ e = fnd->root_de;
+ fnd->root_de = NULL;
+ } else {
+ *entry = NULL;
+ return 0;
+ }
+
+ if (le16_to_cpu(e->size) > sizeof(struct NTFS_DE)) {
+ *entry = e;
+ if (!fnd->root_de)
+ fnd->root_de = e;
+ return 0;
+ }
+ }
+}
+
+int indx_find_raw(struct ntfs_index *indx, struct ntfs_inode *ni,
+ const struct INDEX_ROOT *root, struct NTFS_DE **entry,
+ size_t *off, struct ntfs_fnd *fnd)
+{
+ int err;
+ struct indx_node *n = NULL;
+ struct NTFS_DE *e = NULL;
+ struct NTFS_DE *e2;
+ size_t bit;
+ CLST next_used_vbn;
+ CLST next_vbn;
+ u32 record_size = ni->mi.sbi->record_size;
+
+ /* Use non sorted algorithm */
+ if (!*entry) {
+ /* This is the first call */
+ e = hdr_first_de(&root->ihdr);
+ if (!e)
+ return 0;
+ fnd_clear(fnd);
+ fnd->root_de = e;
+
+ /* The first call with setup of initial element */
+ if (*off >= record_size) {
+ next_vbn = (((*off - record_size) >> indx->index_bits))
+ << indx->idx2vbn_bits;
+ /* jump inside cycle 'for'*/
+ goto next;
+ }
+
+ /* Start enumeration from root */
+ *off = 0;
+ } else if (!fnd->root_de)
+ return -EINVAL;
+
+ for (;;) {
+ /* Check if current entry can be used */
+ if (e && le16_to_cpu(e->size) > sizeof(struct NTFS_DE))
+ goto ok;
+
+ if (!fnd->level) {
+ /* Continue to enumerate root */
+ if (!de_is_last(fnd->root_de)) {
+ e = hdr_next_de(&root->ihdr, fnd->root_de);
+ if (!e)
+ return -EINVAL;
+ fnd->root_de = e;
+ continue;
+ }
+
+ /* Start to enumerate indexes from 0 */
+ next_vbn = 0;
+ } else {
+ /* Continue to enumerate indexes */
+ e2 = fnd->de[fnd->level - 1];
+
+ n = fnd->nodes[fnd->level - 1];
+
+ if (!de_is_last(e2)) {
+ e = hdr_next_de(&n->index->ihdr, e2);
+ if (!e)
+ return -EINVAL;
+ fnd->de[fnd->level - 1] = e;
+ continue;
+ }
+
+ /* Continue with next index */
+ next_vbn = le64_to_cpu(n->index->vbn) +
+ root->index_block_clst;
+ }
+
+next:
+ /* Release current index */
+ if (n) {
+ fnd_pop(fnd);
+ put_indx_node(n);
+ n = NULL;
+ }
+
+ /* Skip all free indexes */
+ bit = next_vbn >> indx->idx2vbn_bits;
+ err = indx_used_bit(indx, ni, &bit);
+ if (err == -ENOENT || bit == MINUS_ONE_T) {
+ /* No used indexes */
+ *entry = NULL;
+ return 0;
+ }
+
+ next_used_vbn = bit << indx->idx2vbn_bits;
+
+ /* Read buffer into memory */
+ err = indx_read(indx, ni, next_used_vbn, &n);
+ if (err)
+ return err;
+
+ e = hdr_first_de(&n->index->ihdr);
+ fnd_push(fnd, n, e);
+ if (!e)
+ return -EINVAL;
+ }
+
+ok:
+ /* return offset to restore enumerator if necessary */
+ if (!n) {
+ /* 'e' points in root */
+ *off = PtrOffset(&root->ihdr, e);
+ } else {
+ /* 'e' points in index */
+ *off = (le64_to_cpu(n->index->vbn) << indx->vbn2vbo_bits) +
+ record_size + PtrOffset(&n->index->ihdr, e);
+ }
+
+ *entry = e;
+ return 0;
+}
+
+/*
+ * indx_create_allocate
+ *
+ * create "Allocation + Bitmap" attributes
+ */
+static int indx_create_allocate(struct ntfs_index *indx, struct ntfs_inode *ni,
+ CLST *vbn)
+{
+ int err = -ENOMEM;
+ struct ntfs_sb_info *sbi = ni->mi.sbi;
+ struct ATTRIB *bitmap;
+ struct ATTRIB *alloc;
+ u32 data_size = 1u << indx->index_bits;
+ u32 alloc_size = ntfs_up_cluster(sbi, data_size);
+ CLST len = alloc_size >> sbi->cluster_bits;
+ const struct INDEX_NAMES *in = &s_index_names[indx->type];
+ CLST alen;
+ struct runs_tree run;
+
+ run_init(&run);
+
+ err = attr_allocate_clusters(sbi, &run, 0, 0, len, NULL, 0, &alen, 0,
+ NULL);
+ if (err)
+ goto out;
+
+ err = ni_insert_nonresident(ni, ATTR_ALLOC, in->name, in->name_len,
+ &run, 0, len, 0, &alloc, NULL);
+ if (err)
+ goto out1;
+
+ alloc->nres.valid_size = alloc->nres.data_size = cpu_to_le64(data_size);
+
+ err = ni_insert_resident(ni, bitmap_size(1), ATTR_BITMAP, in->name,
+ in->name_len, &bitmap, NULL);
+ if (err)
+ goto out2;
+
+ if (in->name == I30_NAME) {
+ ni->vfs_inode.i_size = data_size;
+ inode_set_bytes(&ni->vfs_inode, alloc_size);
+ }
+
+ memcpy(&indx->alloc_run, &run, sizeof(run));
+
+ *vbn = 0;
+
+ return 0;
+
+out2:
+ mi_remove_attr(&ni->mi, alloc);
+
+out1:
+ run_deallocate(sbi, &run, false);
+
+out:
+ return err;
+}
+
+/*
+ * indx_add_allocate
+ *
+ * add clusters to index
+ */
+static int indx_add_allocate(struct ntfs_index *indx, struct ntfs_inode *ni,
+ CLST *vbn)
+{
+ int err;
+ size_t bit;
+ u64 data_size;
+ u64 bmp_size, bmp_size_v;
+ struct ATTRIB *bmp, *alloc;
+ struct mft_inode *mi;
+ const struct INDEX_NAMES *in = &s_index_names[indx->type];
+
+ err = indx_find_free(indx, ni, &bit, &bmp);
+ if (err)
+ goto out1;
+
+ if (bit != MINUS_ONE_T) {
+ bmp = NULL;
+ } else {
+ if (bmp->non_res) {
+ bmp_size = le64_to_cpu(bmp->nres.data_size);
+ bmp_size_v = le64_to_cpu(bmp->nres.valid_size);
+ } else {
+ bmp_size = bmp_size_v = le32_to_cpu(bmp->res.data_size);
+ }
+
+ bit = bmp_size << 3;
+ }
+
+ data_size = (u64)(bit + 1) << indx->index_bits;
+
+ if (bmp) {
+ /* Increase bitmap */
+ err = attr_set_size(ni, ATTR_BITMAP, in->name, in->name_len,
+ &indx->bitmap_run, bitmap_size(bit + 1),
+ NULL, true, NULL);
+ if (err)
+ goto out1;
+ }
+
+ alloc = ni_find_attr(ni, NULL, NULL, ATTR_ALLOC, in->name, in->name_len,
+ NULL, &mi);
+ if (!alloc) {
+ if (bmp)
+ goto out2;
+ goto out1;
+ }
+
+ /* Increase allocation */
+ err = attr_set_size(ni, ATTR_ALLOC, in->name, in->name_len,
+ &indx->alloc_run, data_size, &data_size, true,
+ NULL);
+ if (err) {
+ if (bmp)
+ goto out2;
+ goto out1;
+ }
+
+ *vbn = bit << indx->idx2vbn_bits;
+
+ return 0;
+
+out2:
+ /* Ops (no space?) */
+ attr_set_size(ni, ATTR_BITMAP, in->name, in->name_len,
+ &indx->bitmap_run, bmp_size, &bmp_size_v, false, NULL);
+
+out1:
+ return err;
+}
+
+/*
+ * indx_insert_into_root
+ *
+ * attempts to insert an entry into the index root
+ * If necessary, it will twiddle the index b-tree.
+ */
+static int indx_insert_into_root(struct ntfs_index *indx, struct ntfs_inode *ni,
+ const struct NTFS_DE *new_de,
+ struct NTFS_DE *root_de, const void *ctx,
+ struct ntfs_fnd *fnd)
+{
+ int err = 0;
+ struct NTFS_DE *e, *e0, *re;
+ struct mft_inode *mi;
+ struct ATTRIB *attr;
+ struct MFT_REC *rec;
+ struct INDEX_HDR *hdr;
+ struct indx_node *n;
+ CLST new_vbn;
+ __le64 *sub_vbn, t_vbn;
+ u16 new_de_size;
+ u32 hdr_used, hdr_total, asize, used, to_move;
+ u32 root_size, new_root_size;
+ struct ntfs_sb_info *sbi;
+ int ds_root;
+ struct INDEX_ROOT *root, *a_root = NULL;
+
+ /* Get the record this root placed in */
+ root = indx_get_root(indx, ni, &attr, &mi);
+ if (!root)
+ goto out;
+
+ /*
+ * Try easy case:
+ * hdr_insert_de will succeed if there's room the root for the new entry.
+ */
+ hdr = &root->ihdr;
+ sbi = ni->mi.sbi;
+ rec = mi->mrec;
+ used = le32_to_cpu(rec->used);
+ new_de_size = le16_to_cpu(new_de->size);
+ hdr_used = le32_to_cpu(hdr->used);
+ hdr_total = le32_to_cpu(hdr->total);
+ asize = le32_to_cpu(attr->size);
+ root_size = le32_to_cpu(attr->res.data_size);
+
+ ds_root = new_de_size + hdr_used - hdr_total;
+
+ if (used + ds_root < sbi->max_bytes_per_attr) {
+ /* make a room for new elements */
+ mi_resize_attr(mi, attr, ds_root);
+ hdr->total = cpu_to_le32(hdr_total + ds_root);
+ e = hdr_insert_de(indx, hdr, new_de, root_de, ctx);
+ WARN_ON(!e);
+ fnd_clear(fnd);
+ fnd->root_de = e;
+
+ return 0;
+ }
+
+ /* Make a copy of root attribute to restore if error */
+ a_root = ntfs_memdup(attr, asize);
+ if (!a_root) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ /* copy all the non-end entries from the index root to the new buffer.*/
+ to_move = 0;
+ e0 = hdr_first_de(hdr);
+
+ /* Calculate the size to copy */
+ for (e = e0;; e = hdr_next_de(hdr, e)) {
+ if (!e) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ if (de_is_last(e))
+ break;
+ to_move += le16_to_cpu(e->size);
+ }
+
+ n = NULL;
+ if (!to_move) {
+ re = NULL;
+ } else {
+ re = ntfs_memdup(e0, to_move);
+ if (!re) {
+ err = -ENOMEM;
+ goto out;
+ }
+ }
+
+ sub_vbn = NULL;
+ if (de_has_vcn(e)) {
+ t_vbn = de_get_vbn_le(e);
+ sub_vbn = &t_vbn;
+ }
+
+ new_root_size = sizeof(struct INDEX_ROOT) + sizeof(struct NTFS_DE) +
+ sizeof(u64);
+ ds_root = new_root_size - root_size;
+
+ if (ds_root > 0 && used + ds_root > sbi->max_bytes_per_attr) {
+ /* make root external */
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+
+ if (ds_root)
+ mi_resize_attr(mi, attr, ds_root);
+
+ /* Fill first entry (vcn will be set later) */
+ e = (struct NTFS_DE *)(root + 1);
+ memset(e, 0, sizeof(struct NTFS_DE));
+ e->size = cpu_to_le16(sizeof(struct NTFS_DE) + sizeof(u64));
+ e->flags = NTFS_IE_HAS_SUBNODES | NTFS_IE_LAST;
+
+ hdr->flags = 1;
+ hdr->used = hdr->total =
+ cpu_to_le32(new_root_size - offsetof(struct INDEX_ROOT, ihdr));
+
+ fnd->root_de = hdr_first_de(hdr);
+ mi->dirty = true;
+
+ /* Create alloc and bitmap attributes (if not) */
+ err = run_is_empty(&indx->alloc_run)
+ ? indx_create_allocate(indx, ni, &new_vbn)
+ : indx_add_allocate(indx, ni, &new_vbn);
+
+ /* layout of record may be changed, so rescan root */
+ root = indx_get_root(indx, ni, &attr, &mi);
+ if (!root) {
+ /* bug? */
+ ntfs_set_state(sbi, NTFS_DIRTY_ERROR);
+ err = -EINVAL;
+ goto out1;
+ }
+
+ if (err) {
+ /* restore root */
+ if (mi_resize_attr(mi, attr, -ds_root))
+ memcpy(attr, a_root, asize);
+ else {
+ /* bug? */
+ ntfs_set_state(sbi, NTFS_DIRTY_ERROR);
+ }
+ goto out1;
+ }
+
+ e = (struct NTFS_DE *)(root + 1);
+ *(__le64 *)(e + 1) = cpu_to_le64(new_vbn);
+ mi->dirty = true;
+
+ /* now we can create/format the new buffer and copy the entries into */
+ n = indx_new(indx, ni, new_vbn, sub_vbn);
+ if (IS_ERR(n)) {
+ err = PTR_ERR(n);
+ goto out1;
+ }
+
+ hdr = &n->index->ihdr;
+ hdr_used = le32_to_cpu(hdr->used);
+ hdr_total = le32_to_cpu(hdr->total);
+
+ /* Copy root entries into new buffer */
+ hdr_insert_head(hdr, re, to_move);
+
+ /* Update bitmap attribute */
+ indx_mark_used(indx, ni, new_vbn >> indx->idx2vbn_bits);
+
+ /* Check if we can insert new entry new index buffer */
+ if (hdr_used + new_de_size > hdr_total) {
+ /*
+ * This occurs if mft record is the same or bigger than index
+ * buffer. Move all root new index and have no space to add
+ * new entry classic case when mft record is 1K and index
+ * buffer 4K the problem should not occurs
+ */
+ ntfs_free(re);
+ indx_write(indx, ni, n, 0);
+
+ put_indx_node(n);
+ fnd_clear(fnd);
+ err = indx_insert_entry(indx, ni, new_de, ctx, fnd);
+ goto out;
+ }
+
+ /*
+ * Now root is a parent for new index buffer
+ * Insert NewEntry a new buffer
+ */
+ e = hdr_insert_de(indx, hdr, new_de, NULL, ctx);
+ if (!e) {
+ err = -EINVAL;
+ goto out1;
+ }
+ fnd_push(fnd, n, e);
+
+ /* Just write updates index into disk */
+ indx_write(indx, ni, n, 0);
+
+ n = NULL;
+
+out1:
+ ntfs_free(re);
+ if (n)
+ put_indx_node(n);
+
+out:
+ ntfs_free(a_root);
+ return err;
+}
+
+/*
+ * indx_insert_into_buffer
+ *
+ * attempts to insert an entry into an Index Allocation Buffer.
+ * If necessary, it will split the buffer.
+ */
+static int
+indx_insert_into_buffer(struct ntfs_index *indx, struct ntfs_inode *ni,
+ struct INDEX_ROOT *root, const struct NTFS_DE *new_de,
+ const void *ctx, int level, struct ntfs_fnd *fnd)
+{
+ int err;
+ const struct NTFS_DE *sp;
+ struct NTFS_DE *e, *de_t, *up_e = NULL;
+ struct indx_node *n2 = NULL;
+ struct indx_node *n1 = fnd->nodes[level];
+ struct INDEX_HDR *hdr1 = &n1->index->ihdr;
+ struct INDEX_HDR *hdr2;
+ u32 to_copy, used;
+ CLST new_vbn;
+ __le64 t_vbn, *sub_vbn;
+ u16 sp_size;
+
+ /* Try the most easy case */
+ e = fnd->level - 1 == level ? fnd->de[level] : NULL;
+ e = hdr_insert_de(indx, hdr1, new_de, e, ctx);
+ fnd->de[level] = e;
+ if (e) {
+ /* Just write updated index into disk */
+ indx_write(indx, ni, n1, 0);
+ return 0;
+ }
+
+ /*
+ * No space to insert into buffer. Split it.
+ * To split we:
+ * - Save split point ('cause index buffers will be changed)
+ * - Allocate NewBuffer and copy all entries <= sp into new buffer
+ * - Remove all entries (sp including) from TargetBuffer
+ * - Insert NewEntry into left or right buffer (depending on sp <=>
+ * NewEntry)
+ * - Insert sp into parent buffer (or root)
+ * - Make sp a parent for new buffer
+ */
+ sp = hdr_find_split(hdr1);
+ if (!sp)
+ return -EINVAL;
+
+ sp_size = le16_to_cpu(sp->size);
+ up_e = ntfs_malloc(sp_size + sizeof(u64));
+ if (!up_e)
+ return -ENOMEM;
+ memcpy(up_e, sp, sp_size);
+
+ if (!hdr1->flags) {
+ up_e->flags |= NTFS_IE_HAS_SUBNODES;
+ up_e->size = cpu_to_le16(sp_size + sizeof(u64));
+ sub_vbn = NULL;
+ } else {
+ t_vbn = de_get_vbn_le(up_e);
+ sub_vbn = &t_vbn;
+ }
+
+ /* Allocate on disk a new index allocation buffer. */
+ err = indx_add_allocate(indx, ni, &new_vbn);
+ if (err)
+ goto out;
+
+ /* Allocate and format memory a new index buffer */
+ n2 = indx_new(indx, ni, new_vbn, sub_vbn);
+ if (IS_ERR(n2)) {
+ err = PTR_ERR(n2);
+ goto out;
+ }
+
+ hdr2 = &n2->index->ihdr;
+
+ /* Make sp a parent for new buffer */
+ de_set_vbn(up_e, new_vbn);
+
+ /* copy all the entries <= sp into the new buffer. */
+ de_t = hdr_first_de(hdr1);
+ to_copy = PtrOffset(de_t, sp);
+ hdr_insert_head(hdr2, de_t, to_copy);
+
+ /* remove all entries (sp including) from hdr1 */
+ used = le32_to_cpu(hdr1->used) - to_copy - sp_size;
+ memmove(de_t, Add2Ptr(sp, sp_size), used - le32_to_cpu(hdr1->de_off));
+ hdr1->used = cpu_to_le32(used);
+
+ /* Insert new entry into left or right buffer (depending on sp <=> new_de) */
+ hdr_insert_de(indx,
+ (*indx->cmp)(new_de + 1, le16_to_cpu(new_de->key_size),
+ up_e + 1, le16_to_cpu(up_e->key_size),
+ ctx) < 0
+ ? hdr2
+ : hdr1,
+ new_de, NULL, ctx);
+
+ indx_mark_used(indx, ni, new_vbn >> indx->idx2vbn_bits);
+
+ indx_write(indx, ni, n1, 0);
+ indx_write(indx, ni, n2, 0);
+
+ put_indx_node(n2);
+
+ /*
+ * we've finished splitting everybody, so we are ready to
+ * insert the promoted entry into the parent.
+ */
+ if (!level) {
+ /* Insert in root */
+ err = indx_insert_into_root(indx, ni, up_e, NULL, ctx, fnd);
+ if (err)
+ goto out;
+ } else {
+ /*
+ * The target buffer's parent is another index buffer
+ * TODO: Remove recursion
+ */
+ err = indx_insert_into_buffer(indx, ni, root, up_e, ctx,
+ level - 1, fnd);
+ if (err)
+ goto out;
+ }
+
+out:
+ ntfs_free(up_e);
+
+ return err;
+}
+
+/*
+ * indx_insert_entry
+ *
+ * inserts new entry into index
+ */
+int indx_insert_entry(struct ntfs_index *indx, struct ntfs_inode *ni,
+ const struct NTFS_DE *new_de, const void *ctx,
+ struct ntfs_fnd *fnd)
+{
+ int err;
+ int diff;
+ struct NTFS_DE *e;
+ struct ntfs_fnd *fnd_a = NULL;
+ struct INDEX_ROOT *root;
+
+ if (!fnd) {
+ fnd_a = fnd_get();
+ if (!fnd_a) {
+ err = -ENOMEM;
+ goto out1;
+ }
+ fnd = fnd_a;
+ }
+
+ root = indx_get_root(indx, ni, NULL, NULL);
+ if (!root) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ if (fnd_is_empty(fnd)) {
+ /* Find the spot the tree where we want to insert the new entry. */
+ err = indx_find(indx, ni, root, new_de + 1,
+ le16_to_cpu(new_de->key_size), ctx, &diff, &e,
+ fnd);
+ if (err)
+ goto out;
+
+ if (!diff) {
+ err = -EEXIST;
+ goto out;
+ }
+ }
+
+ if (!fnd->level) {
+ /* The root is also a leaf, so we'll insert the new entry into it. */
+ err = indx_insert_into_root(indx, ni, new_de, fnd->root_de, ctx,
+ fnd);
+ if (err)
+ goto out;
+ } else {
+ /* found a leaf buffer, so we'll insert the new entry into it.*/
+ err = indx_insert_into_buffer(indx, ni, root, new_de, ctx,
+ fnd->level - 1, fnd);
+ if (err)
+ goto out;
+ }
+
+out:
+ fnd_put(fnd_a);
+out1:
+ return err;
+}
+
+/*
+ * indx_find_buffer
+ *
+ * locates a buffer the tree.
+ */
+static struct indx_node *indx_find_buffer(struct ntfs_index *indx,
+ struct ntfs_inode *ni,
+ const struct INDEX_ROOT *root,
+ __le64 vbn, struct indx_node *n)
+{
+ int err;
+ const struct NTFS_DE *e;
+ struct indx_node *r;
+ const struct INDEX_HDR *hdr = n ? &n->index->ihdr : &root->ihdr;
+
+ /* Step 1: Scan one level */
+ for (e = hdr_first_de(hdr);; e = hdr_next_de(hdr, e)) {
+ if (!e)
+ return ERR_PTR(-EINVAL);
+
+ if (de_has_vcn(e) && vbn == de_get_vbn_le(e))
+ return n;
+
+ if (de_is_last(e))
+ break;
+ }
+
+ /* Step2: Do recursion */
+ e = Add2Ptr(hdr, le32_to_cpu(hdr->de_off));
+ for (;;) {
+ if (de_has_vcn_ex(e)) {
+ err = indx_read(indx, ni, de_get_vbn(e), &n);
+ if (err)
+ return ERR_PTR(err);
+
+ r = indx_find_buffer(indx, ni, root, vbn, n);
+ if (r)
+ return r;
+ }
+
+ if (de_is_last(e))
+ break;
+
+ e = Add2Ptr(e, le16_to_cpu(e->size));
+ }
+
+ return NULL;
+}
+
+/*
+ * indx_shrink
+ *
+ * deallocates unused tail indexes
+ */
+static int indx_shrink(struct ntfs_index *indx, struct ntfs_inode *ni,
+ size_t bit)
+{
+ int err = 0;
+ u64 bpb, new_data;
+ size_t nbits;
+ struct ATTRIB *b;
+ struct ATTR_LIST_ENTRY *le = NULL;
+ const struct INDEX_NAMES *in = &s_index_names[indx->type];
+
+ b = ni_find_attr(ni, NULL, &le, ATTR_BITMAP, in->name, in->name_len,
+ NULL, NULL);
+
+ if (!b)
+ return -ENOENT;
+
+ if (!b->non_res) {
+ unsigned long pos;
+ const unsigned long *bm = resident_data(b);
+
+ nbits = le32_to_cpu(b->res.data_size) * 8;
+
+ if (bit >= nbits)
+ return 0;
+
+ pos = find_next_bit(bm, nbits, bit);
+ if (pos < nbits)
+ return 0;
+ } else {
+ size_t used = MINUS_ONE_T;
+
+ nbits = le64_to_cpu(b->nres.data_size) * 8;
+
+ if (bit >= nbits)
+ return 0;
+
+ err = scan_nres_bitmap(ni, b, indx, bit, &scan_for_used, &used);
+ if (err)
+ return err;
+
+ if (used != MINUS_ONE_T)
+ return 0;
+ }
+
+ new_data = (u64)bit << indx->index_bits;
+
+ err = attr_set_size(ni, ATTR_ALLOC, in->name, in->name_len,
+ &indx->alloc_run, new_data, &new_data, false, NULL);
+ if (err)
+ return err;
+
+ bpb = bitmap_size(bit);
+ if (bpb * 8 == nbits)
+ return 0;
+
+ err = attr_set_size(ni, ATTR_BITMAP, in->name, in->name_len,
+ &indx->bitmap_run, bpb, &bpb, false, NULL);
+
+ return err;
+}
+
+static int indx_free_children(struct ntfs_index *indx, struct ntfs_inode *ni,
+ const struct NTFS_DE *e, bool trim)
+{
+ int err;
+ struct indx_node *n;
+ struct INDEX_HDR *hdr;
+ CLST vbn = de_get_vbn(e);
+ size_t i;
+
+ err = indx_read(indx, ni, vbn, &n);
+ if (err)
+ return err;
+
+ hdr = &n->index->ihdr;
+ /* First, recurse into the children, if any.*/
+ if (hdr_has_subnode(hdr)) {
+ for (e = hdr_first_de(hdr); e; e = hdr_next_de(hdr, e)) {
+ indx_free_children(indx, ni, e, false);
+ if (de_is_last(e))
+ break;
+ }
+ }
+
+ put_indx_node(n);
+
+ i = vbn >> indx->idx2vbn_bits;
+ /* We've gotten rid of the children; add this buffer to the free list. */
+ indx_mark_free(indx, ni, i);
+
+ if (!trim)
+ return 0;
+
+ /*
+ * If there are no used indexes after current free index
+ * then we can truncate allocation and bitmap
+ * Use bitmap to estimate the case
+ */
+ indx_shrink(indx, ni, i + 1);
+ return 0;
+}
+
+/*
+ * indx_get_entry_to_replace
+ *
+ * finds a replacement entry for a deleted entry
+ * always returns a node entry:
+ * NTFS_IE_HAS_SUBNODES is set the flags and the size includes the sub_vcn
+ */
+static int indx_get_entry_to_replace(struct ntfs_index *indx,
+ struct ntfs_inode *ni,
+ const struct NTFS_DE *de_next,
+ struct NTFS_DE **de_to_replace,
+ struct ntfs_fnd *fnd)
+{
+ int err;
+ int level = -1;
+ CLST vbn;
+ struct NTFS_DE *e, *te, *re;
+ struct indx_node *n;
+ struct INDEX_BUFFER *ib;
+
+ *de_to_replace = NULL;
+
+ /* Find first leaf entry down from de_next */
+ vbn = de_get_vbn(de_next);
+ for (;;) {
+ n = NULL;
+ err = indx_read(indx, ni, vbn, &n);
+ if (err)
+ goto out;
+
+ e = hdr_first_de(&n->index->ihdr);
+ fnd_push(fnd, n, e);
+
+ if (!de_is_last(e)) {
+ /*
+ * This buffer is non-empty, so its first entry could be used as the
+ * replacement entry.
+ */
+ level = fnd->level - 1;
+ }
+
+ if (!de_has_vcn(e))
+ break;
+
+ /* This buffer is a node. Continue to go down */
+ vbn = de_get_vbn(e);
+ }
+
+ if (level == -1)
+ goto out;
+
+ n = fnd->nodes[level];
+ te = hdr_first_de(&n->index->ihdr);
+ /* Copy the candidate entry into the replacement entry buffer. */
+ re = ntfs_malloc(le16_to_cpu(te->size) + sizeof(u64));
+ if (!re) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ *de_to_replace = re;
+ memcpy(re, te, le16_to_cpu(te->size));
+
+ if (!de_has_vcn(re)) {
+ /*
+ * The replacement entry we found doesn't have a sub_vcn. increase its size
+ * to hold one.
+ */
+ le16_add_cpu(&re->size, sizeof(u64));
+ re->flags |= NTFS_IE_HAS_SUBNODES;
+ } else {
+ /*
+ * The replacement entry we found was a node entry, which means that all
+ * its child buffers are empty. Return them to the free pool.
+ */
+ indx_free_children(indx, ni, te, true);
+ }
+
+ /*
+ * Expunge the replacement entry from its former location,
+ * and then write that buffer.
+ */
+ ib = n->index;
+ e = hdr_delete_de(&ib->ihdr, te);
+
+ fnd->de[level] = e;
+ indx_write(indx, ni, n, 0);
+
+ /* Check to see if this action created an empty leaf. */
+ if (ib_is_leaf(ib) && ib_is_empty(ib))
+ return 0;
+
+out:
+ fnd_clear(fnd);
+ return err;
+}
+
+/*
+ * indx_delete_entry
+ *
+ * deletes an entry from the index.
+ */
+int indx_delete_entry(struct ntfs_index *indx, struct ntfs_inode *ni,
+ const void *key, u32 key_len, const void *ctx)
+{
+ int err, diff;
+ struct INDEX_ROOT *root;
+ struct INDEX_HDR *hdr;
+ struct ntfs_fnd *fnd, *fnd2;
+ struct INDEX_BUFFER *ib;
+ struct NTFS_DE *e, *re, *next, *prev, *me;
+ struct indx_node *n, *n2d = NULL;
+ __le64 sub_vbn;
+ int level, level2;
+ struct ATTRIB *attr;
+ struct mft_inode *mi;
+ u32 e_size, root_size, new_root_size;
+ size_t trim_bit;
+ const struct INDEX_NAMES *in;
+
+ fnd = fnd_get();
+ if (!fnd) {
+ err = -ENOMEM;
+ goto out2;
+ }
+
+ fnd2 = fnd_get();
+ if (!fnd2) {
+ err = -ENOMEM;
+ goto out1;
+ }
+
+ root = indx_get_root(indx, ni, &attr, &mi);
+ if (!root) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ /* Locate the entry to remove. */
+ err = indx_find(indx, ni, root, key, key_len, ctx, &diff, &e, fnd);
+ if (err)
+ goto out;
+
+ if (!e || diff) {
+ err = -ENOENT;
+ goto out;
+ }
+
+ level = fnd->level;
+
+ if (level) {
+ n = fnd->nodes[level - 1];
+ e = fnd->de[level - 1];
+ ib = n->index;
+ hdr = &ib->ihdr;
+ } else {
+ hdr = &root->ihdr;
+ e = fnd->root_de;
+ n = NULL;
+ }
+
+ e_size = le16_to_cpu(e->size);
+
+ if (!de_has_vcn_ex(e)) {
+ /* The entry to delete is a leaf, so we can just rip it out */
+ hdr_delete_de(hdr, e);
+
+ if (!level) {
+ hdr->total = hdr->used;
+
+ /* Shrink resident root attribute */
+ mi_resize_attr(mi, attr, 0 - e_size);
+ goto out;
+ }
+
+ indx_write(indx, ni, n, 0);
+
+ /*
+ * Check to see if removing that entry made
+ * the leaf empty.
+ */
+ if (ib_is_leaf(ib) && ib_is_empty(ib)) {
+ fnd_pop(fnd);
+ fnd_push(fnd2, n, e);
+ }
+ } else {
+ /*
+ * The entry we wish to delete is a node buffer, so we
+ * have to find a replacement for it.
+ */
+ next = de_get_next(e);
+
+ err = indx_get_entry_to_replace(indx, ni, next, &re, fnd2);
+ if (err)
+ goto out;
+
+ if (re) {
+ de_set_vbn_le(re, de_get_vbn_le(e));
+ hdr_delete_de(hdr, e);
+
+ err = level ? indx_insert_into_buffer(indx, ni, root,
+ re, ctx,
+ fnd->level - 1,
+ fnd)
+ : indx_insert_into_root(indx, ni, re, e,
+ ctx, fnd);
+ ntfs_free(re);
+
+ if (err)
+ goto out;
+ } else {
+ /*
+ * There is no replacement for the current entry.
+ * This means that the subtree rooted at its node is empty,
+ * and can be deleted, which turn means that the node can
+ * just inherit the deleted entry sub_vcn
+ */
+ indx_free_children(indx, ni, next, true);
+
+ de_set_vbn_le(next, de_get_vbn_le(e));
+ hdr_delete_de(hdr, e);
+ if (level) {
+ indx_write(indx, ni, n, 0);
+ } else {
+ hdr->total = hdr->used;
+
+ /* Shrink resident root attribute */
+ mi_resize_attr(mi, attr, 0 - e_size);
+ }
+ }
+ }
+
+ /* Delete a branch of tree */
+ if (!fnd2 || !fnd2->level)
+ goto out;
+
+ /* Reinit root 'cause it can be changed */
+ root = indx_get_root(indx, ni, &attr, &mi);
+ if (!root) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ n2d = NULL;
+ sub_vbn = fnd2->nodes[0]->index->vbn;
+ level2 = 0;
+ level = fnd->level;
+
+ hdr = level ? &fnd->nodes[level - 1]->index->ihdr : &root->ihdr;
+
+ /* Scan current level */
+ for (e = hdr_first_de(hdr);; e = hdr_next_de(hdr, e)) {
+ if (!e) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ if (de_has_vcn(e) && sub_vbn == de_get_vbn_le(e))
+ break;
+
+ if (de_is_last(e)) {
+ e = NULL;
+ break;
+ }
+ }
+
+ if (!e) {
+ /* Do slow search from root */
+ struct indx_node *in;
+
+ fnd_clear(fnd);
+
+ in = indx_find_buffer(indx, ni, root, sub_vbn, NULL);
+ if (IS_ERR(in)) {
+ err = PTR_ERR(in);
+ goto out;
+ }
+
+ if (in)
+ fnd_push(fnd, in, NULL);
+ }
+
+ /* Merge fnd2 -> fnd */
+ for (level = 0; level < fnd2->level; level++) {
+ fnd_push(fnd, fnd2->nodes[level], fnd2->de[level]);
+ fnd2->nodes[level] = NULL;
+ }
+ fnd2->level = 0;
+
+ hdr = NULL;
+ for (level = fnd->level; level; level--) {
+ struct indx_node *in = fnd->nodes[level - 1];
+
+ ib = in->index;
+ if (ib_is_empty(ib)) {
+ sub_vbn = ib->vbn;
+ } else {
+ hdr = &ib->ihdr;
+ n2d = in;
+ level2 = level;
+ break;
+ }
+ }
+
+ if (!hdr)
+ hdr = &root->ihdr;
+
+ e = hdr_first_de(hdr);
+ if (!e) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ if (hdr != &root->ihdr || !de_is_last(e)) {
+ prev = NULL;
+ while (!de_is_last(e)) {
+ if (de_has_vcn(e) && sub_vbn == de_get_vbn_le(e))
+ break;
+ prev = e;
+ e = hdr_next_de(hdr, e);
+ if (!e) {
+ err = -EINVAL;
+ goto out;
+ }
+ }
+
+ if (sub_vbn != de_get_vbn_le(e)) {
+ /*
+ * Didn't find the parent entry, although this buffer is the parent trail.
+ * Something is corrupt.
+ */
+ err = -EINVAL;
+ goto out;
+ }
+
+ if (de_is_last(e)) {
+ /*
+ * Since we can't remove the end entry, we'll remove its
+ * predecessor instead. This means we have to transfer the
+ * predecessor's sub_vcn to the end entry.
+ * Note: that this index block is not empty, so the
+ * predecessor must exist
+ */
+ if (!prev) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ if (de_has_vcn(prev)) {
+ de_set_vbn_le(e, de_get_vbn_le(prev));
+ } else if (de_has_vcn(e)) {
+ le16_sub_cpu(&e->size, sizeof(u64));
+ e->flags &= ~NTFS_IE_HAS_SUBNODES;
+ le32_sub_cpu(&hdr->used, sizeof(u64));
+ }
+ e = prev;
+ }
+
+ /*
+ * Copy the current entry into a temporary buffer (stripping off its
+ * down-pointer, if any) and delete it from the current buffer or root,
+ * as appropriate.
+ */
+ e_size = le16_to_cpu(e->size);
+ me = ntfs_memdup(e, e_size);
+ if (!me) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ if (de_has_vcn(me)) {
+ me->flags &= ~NTFS_IE_HAS_SUBNODES;
+ le16_sub_cpu(&me->size, sizeof(u64));
+ }
+
+ hdr_delete_de(hdr, e);
+
+ if (hdr == &root->ihdr) {
+ level = 0;
+ hdr->total = hdr->used;
+
+ /* Shrink resident root attribute */
+ mi_resize_attr(mi, attr, 0 - e_size);
+ } else {
+ indx_write(indx, ni, n2d, 0);
+ level = level2;
+ }
+
+ /* Mark unused buffers as free */
+ trim_bit = -1;
+ for (; level < fnd->level; level++) {
+ ib = fnd->nodes[level]->index;
+ if (ib_is_empty(ib)) {
+ size_t k = le64_to_cpu(ib->vbn) >>
+ indx->idx2vbn_bits;
+
+ indx_mark_free(indx, ni, k);
+ if (k < trim_bit)
+ trim_bit = k;
+ }
+ }
+
+ fnd_clear(fnd);
+ /*fnd->root_de = NULL;*/
+
+ /*
+ * Re-insert the entry into the tree.
+ * Find the spot the tree where we want to insert the new entry.
+ */
+ err = indx_insert_entry(indx, ni, me, ctx, fnd);
+ ntfs_free(me);
+ if (err)
+ goto out;
+
+ if (trim_bit != -1)
+ indx_shrink(indx, ni, trim_bit);
+ } else {
+ /*
+ * This tree needs to be collapsed down to an empty root.
+ * Recreate the index root as an empty leaf and free all the bits the
+ * index allocation bitmap.
+ */
+ fnd_clear(fnd);
+ fnd_clear(fnd2);
+
+ in = &s_index_names[indx->type];
+
+ err = attr_set_size(ni, ATTR_ALLOC, in->name, in->name_len,
+ &indx->alloc_run, 0, NULL, false, NULL);
+ err = ni_remove_attr(ni, ATTR_ALLOC, in->name, in->name_len,
+ false, NULL);
+ run_close(&indx->alloc_run);
+
+ err = attr_set_size(ni, ATTR_BITMAP, in->name, in->name_len,
+ &indx->bitmap_run, 0, NULL, false, NULL);
+ err = ni_remove_attr(ni, ATTR_BITMAP, in->name, in->name_len,
+ false, NULL);
+ run_close(&indx->bitmap_run);
+
+ root = indx_get_root(indx, ni, &attr, &mi);
+ if (!root) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ root_size = le32_to_cpu(attr->res.data_size);
+ new_root_size =
+ sizeof(struct INDEX_ROOT) + sizeof(struct NTFS_DE);
+
+ if (new_root_size != root_size &&
+ !mi_resize_attr(mi, attr, new_root_size - root_size)) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ /* Fill first entry */
+ e = (struct NTFS_DE *)(root + 1);
+ e->ref.low = 0;
+ e->ref.high = 0;
+ e->ref.seq = 0;
+ e->size = cpu_to_le16(sizeof(struct NTFS_DE));
+ e->flags = NTFS_IE_LAST; // 0x02
+ e->key_size = 0;
+ e->res = 0;
+
+ hdr = &root->ihdr;
+ hdr->flags = 0;
+ hdr->used = hdr->total = cpu_to_le32(
+ new_root_size - offsetof(struct INDEX_ROOT, ihdr));
+ mi->dirty = true;
+ }
+
+out:
+ fnd_put(fnd2);
+out1:
+ fnd_put(fnd);
+out2:
+ return err;
+}
+
+/*
+ * Update duplicated information in directory entry
+ * 'dup' - info from MFT record
+ */
+int indx_update_dup(struct ntfs_inode *ni, struct ntfs_sb_info *sbi,
+ const struct ATTR_FILE_NAME *fname,
+ const struct NTFS_DUP_INFO *dup, int sync)
+{
+ int err, diff;
+ struct NTFS_DE *e = NULL;
+ struct ATTR_FILE_NAME *e_fname;
+ struct ntfs_fnd *fnd;
+ struct INDEX_ROOT *root;
+ struct mft_inode *mi;
+ struct ntfs_index *indx = &ni->dir;
+
+ fnd = fnd_get();
+ if (!fnd) {
+ err = -ENOMEM;
+ goto out1;
+ }
+
+ root = indx_get_root(indx, ni, NULL, &mi);
+ if (!root) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ /* Find entry in directory */
+ err = indx_find(indx, ni, root, fname, fname_full_size(fname), sbi,
+ &diff, &e, fnd);
+ if (err)
+ goto out;
+
+ if (!e) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ if (diff) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ e_fname = (struct ATTR_FILE_NAME *)(e + 1);
+
+ if (!memcmp(&e_fname->dup, dup, sizeof(*dup))) {
+ /* nothing to update in index! Try to avoid this call */
+ goto out;
+ }
+
+ memcpy(&e_fname->dup, dup, sizeof(*dup));
+
+ if (fnd->level) {
+ /* directory entry in index */
+ err = indx_write(indx, ni, fnd->nodes[fnd->level - 1], sync);
+ } else {
+ /* directory entry in directory MFT record */
+ mi->dirty = true;
+ if (sync)
+ err = mi_write(mi, 1);
+ else
+ mark_inode_dirty(&ni->vfs_inode);
+ }
+
+out:
+ fnd_put(fnd);
+
+out1:
+ return err;
+}
diff --git a/fs/ntfs3/inode.c b/fs/ntfs3/inode.c
new file mode 100644
index 000000000000..bf51e294432e
--- /dev/null
+++ b/fs/ntfs3/inode.c
@@ -0,0 +1,2029 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ *
+ * Copyright (C) 2019-2021 Paragon Software GmbH, All rights reserved.
+ *
+ */
+
+#include <linux/blkdev.h>
+#include <linux/buffer_head.h>
+#include <linux/fs.h>
+#include <linux/iversion.h>
+#include <linux/mpage.h>
+#include <linux/namei.h>
+#include <linux/nls.h>
+#include <linux/uio.h>
+#include <linux/version.h>
+#include <linux/writeback.h>
+
+#include "debug.h"
+#include "ntfs.h"
+#include "ntfs_fs.h"
+
+/*
+ * ntfs_read_mft
+ *
+ * reads record and parses MFT
+ */
+static struct inode *ntfs_read_mft(struct inode *inode,
+ const struct cpu_str *name,
+ const struct MFT_REF *ref)
+{
+ int err = 0;
+ struct ntfs_inode *ni = ntfs_i(inode);
+ struct super_block *sb = inode->i_sb;
+ struct ntfs_sb_info *sbi = sb->s_fs_info;
+ mode_t mode = 0;
+ struct ATTR_STD_INFO5 *std5 = NULL;
+ struct ATTR_LIST_ENTRY *le;
+ struct ATTRIB *attr;
+ bool is_match = false;
+ bool is_root = false;
+ bool is_dir;
+ unsigned long ino = inode->i_ino;
+ u32 rp_fa = 0, asize, t32;
+ u16 roff, rsize, names = 0;
+ const struct ATTR_FILE_NAME *fname = NULL;
+ const struct INDEX_ROOT *root;
+ struct REPARSE_DATA_BUFFER rp; // 0x18 bytes
+ u64 t64;
+ struct MFT_REC *rec;
+ struct runs_tree *run;
+
+ inode->i_op = NULL;
+ /* Setup 'uid' and 'gid' */
+ inode->i_uid = sbi->options.fs_uid;
+ inode->i_gid = sbi->options.fs_gid;
+
+ err = mi_init(&ni->mi, sbi, ino);
+ if (err)
+ goto out;
+
+ if (!sbi->mft.ni && ino == MFT_REC_MFT && !sb->s_root) {
+ t64 = sbi->mft.lbo >> sbi->cluster_bits;
+ t32 = bytes_to_cluster(sbi, MFT_REC_VOL * sbi->record_size);
+ sbi->mft.ni = ni;
+ init_rwsem(&ni->file.run_lock);
+
+ if (!run_add_entry(&ni->file.run, 0, t64, t32, true)) {
+ err = -ENOMEM;
+ goto out;
+ }
+ }
+
+ err = mi_read(&ni->mi, ino == MFT_REC_MFT);
+
+ if (err)
+ goto out;
+
+ rec = ni->mi.mrec;
+
+ if (sbi->flags & NTFS_FLAGS_LOG_REPLAYING) {
+ ;
+ } else if (ref->seq != rec->seq) {
+ err = -EINVAL;
+ ntfs_err(sb, "MFT: r=%lx, expect seq=%x instead of %x!", ino,
+ le16_to_cpu(ref->seq), le16_to_cpu(rec->seq));
+ goto out;
+ } else if (!is_rec_inuse(rec)) {
+ err = -EINVAL;
+ ntfs_err(sb, "Inode r=%x is not in use!", (u32)ino);
+ goto out;
+ }
+
+ if (le32_to_cpu(rec->total) != sbi->record_size) {
+ // bad inode?
+ err = -EINVAL;
+ goto out;
+ }
+
+ if (!is_rec_base(rec))
+ goto Ok;
+
+ /* record should contain $I30 root */
+ is_dir = rec->flags & RECORD_FLAG_DIR;
+
+ inode->i_generation = le16_to_cpu(rec->seq);
+
+ /* Enumerate all struct Attributes MFT */
+ le = NULL;
+ attr = NULL;
+
+ /*
+ * to reduce tab pressure use goto instead of
+ * while( (attr = ni_enum_attr_ex(ni, attr, &le, NULL) ))
+ */
+next_attr:
+ run = NULL;
+ err = -EINVAL;
+ attr = ni_enum_attr_ex(ni, attr, &le, NULL);
+ if (!attr)
+ goto end_enum;
+
+ if (le && le->vcn) {
+ /* This is non primary attribute segment. Ignore if not MFT */
+ if (ino != MFT_REC_MFT || attr->type != ATTR_DATA)
+ goto next_attr;
+
+ run = &ni->file.run;
+ asize = le32_to_cpu(attr->size);
+ goto attr_unpack_run;
+ }
+
+ roff = attr->non_res ? 0 : le16_to_cpu(attr->res.data_off);
+ rsize = attr->non_res ? 0 : le32_to_cpu(attr->res.data_size);
+ asize = le32_to_cpu(attr->size);
+
+ switch (attr->type) {
+ case ATTR_STD:
+ if (attr->non_res ||
+ asize < sizeof(struct ATTR_STD_INFO) + roff ||
+ rsize < sizeof(struct ATTR_STD_INFO))
+ goto out;
+
+ if (std5)
+ goto next_attr;
+
+ std5 = Add2Ptr(attr, roff);
+
+#ifdef STATX_BTIME
+ nt2kernel(std5->cr_time, &ni->i_crtime);
+#endif
+ nt2kernel(std5->a_time, &inode->i_atime);
+ nt2kernel(std5->c_time, &inode->i_ctime);
+ nt2kernel(std5->m_time, &inode->i_mtime);
+
+ ni->std_fa = std5->fa;
+
+ if (asize >= sizeof(struct ATTR_STD_INFO5) + roff &&
+ rsize >= sizeof(struct ATTR_STD_INFO5))
+ ni->std_security_id = std5->security_id;
+ goto next_attr;
+
+ case ATTR_LIST:
+ if (attr->name_len || le || ino == MFT_REC_LOG)
+ goto out;
+
+ err = ntfs_load_attr_list(ni, attr);
+ if (err)
+ goto out;
+
+ le = NULL;
+ attr = NULL;
+ goto next_attr;
+
+ case ATTR_NAME:
+ if (attr->non_res || asize < SIZEOF_ATTRIBUTE_FILENAME + roff ||
+ rsize < SIZEOF_ATTRIBUTE_FILENAME)
+ goto out;
+
+ fname = Add2Ptr(attr, roff);
+ if (fname->type == FILE_NAME_DOS)
+ goto next_attr;
+
+ names += 1;
+ if (name && name->len == fname->name_len &&
+ !ntfs_cmp_names_cpu(name, (struct le_str *)&fname->name_len,
+ NULL, false))
+ is_match = true;
+
+ goto next_attr;
+
+ case ATTR_DATA:
+ if (is_dir) {
+ /* ignore data attribute in dir record */
+ goto next_attr;
+ }
+
+ if (ino == MFT_REC_BADCLUST && !attr->non_res)
+ goto next_attr;
+
+ if (attr->name_len &&
+ ((ino != MFT_REC_BADCLUST || !attr->non_res ||
+ attr->name_len != ARRAY_SIZE(BAD_NAME) ||
+ memcmp(attr_name(attr), BAD_NAME, sizeof(BAD_NAME))) &&
+ (ino != MFT_REC_SECURE || !attr->non_res ||
+ attr->name_len != ARRAY_SIZE(SDS_NAME) ||
+ memcmp(attr_name(attr), SDS_NAME, sizeof(SDS_NAME))))) {
+ /* file contains stream attribute. ignore it */
+ goto next_attr;
+ }
+
+ if (is_attr_sparsed(attr))
+ ni->std_fa |= FILE_ATTRIBUTE_SPARSE_FILE;
+ else
+ ni->std_fa &= ~FILE_ATTRIBUTE_SPARSE_FILE;
+
+ if (is_attr_compressed(attr))
+ ni->std_fa |= FILE_ATTRIBUTE_COMPRESSED;
+ else
+ ni->std_fa &= ~FILE_ATTRIBUTE_COMPRESSED;
+
+ if (is_attr_encrypted(attr))
+ ni->std_fa |= FILE_ATTRIBUTE_ENCRYPTED;
+ else
+ ni->std_fa &= ~FILE_ATTRIBUTE_ENCRYPTED;
+
+ if (!attr->non_res) {
+ ni->i_valid = inode->i_size = rsize;
+ inode_set_bytes(inode, rsize);
+ t32 = asize;
+ } else {
+ t32 = le16_to_cpu(attr->nres.run_off);
+ }
+
+ mode = S_IFREG | (0777 & sbi->options.fs_fmask_inv);
+
+ if (!attr->non_res) {
+ ni->ni_flags |= NI_FLAG_RESIDENT;
+ goto next_attr;
+ }
+
+ inode_set_bytes(inode, attr_ondisk_size(attr));
+
+ ni->i_valid = le64_to_cpu(attr->nres.valid_size);
+ inode->i_size = le64_to_cpu(attr->nres.data_size);
+ if (!attr->nres.alloc_size)
+ goto next_attr;
+
+ run = ino == MFT_REC_BITMAP ? &sbi->used.bitmap.run
+ : &ni->file.run;
+ break;
+
+ case ATTR_ROOT:
+ if (attr->non_res)
+ goto out;
+
+ root = Add2Ptr(attr, roff);
+ is_root = true;
+
+ if (attr->name_len != ARRAY_SIZE(I30_NAME) ||
+ memcmp(attr_name(attr), I30_NAME, sizeof(I30_NAME)))
+ goto next_attr;
+
+ if (root->type != ATTR_NAME ||
+ root->rule != NTFS_COLLATION_TYPE_FILENAME)
+ goto out;
+
+ if (!is_dir)
+ goto next_attr;
+
+ ni->ni_flags |= NI_FLAG_DIR;
+
+ err = indx_init(&ni->dir, sbi, attr, INDEX_MUTEX_I30);
+ if (err)
+ goto out;
+
+ mode = sb->s_root
+ ? (S_IFDIR | (0777 & sbi->options.fs_dmask_inv))
+ : (S_IFDIR | 0777);
+ goto next_attr;
+
+ case ATTR_ALLOC:
+ if (!is_root || attr->name_len != ARRAY_SIZE(I30_NAME) ||
+ memcmp(attr_name(attr), I30_NAME, sizeof(I30_NAME)))
+ goto next_attr;
+
+ inode->i_size = le64_to_cpu(attr->nres.data_size);
+ ni->i_valid = le64_to_cpu(attr->nres.valid_size);
+ inode_set_bytes(inode, le64_to_cpu(attr->nres.alloc_size));
+
+ run = &ni->dir.alloc_run;
+ break;
+
+ case ATTR_BITMAP:
+ if (ino == MFT_REC_MFT) {
+ if (!attr->non_res)
+ goto out;
+#ifndef CONFIG_NTFS3_64BIT_CLUSTER
+ /* 0x20000000 = 2^32 / 8 */
+ if (le64_to_cpu(attr->nres.alloc_size) >= 0x20000000)
+ goto out;
+#endif
+ run = &sbi->mft.bitmap.run;
+ break;
+ } else if (is_dir && attr->name_len == ARRAY_SIZE(I30_NAME) &&
+ !memcmp(attr_name(attr), I30_NAME,
+ sizeof(I30_NAME)) &&
+ attr->non_res) {
+ run = &ni->dir.bitmap_run;
+ break;
+ }
+ goto next_attr;
+
+ case ATTR_REPARSE:
+ if (attr->name_len)
+ goto next_attr;
+
+ rp_fa = ni_parse_reparse(ni, attr, &rp);
+ switch (rp_fa) {
+ case REPARSE_LINK:
+ if (!attr->non_res) {
+ inode->i_size = rsize;
+ inode_set_bytes(inode, rsize);
+ t32 = asize;
+ } else {
+ inode->i_size =
+ le64_to_cpu(attr->nres.data_size);
+ t32 = le16_to_cpu(attr->nres.run_off);
+ }
+
+ /* Looks like normal symlink */
+ ni->i_valid = inode->i_size;
+
+ /* Clear directory bit */
+ if (ni->ni_flags & NI_FLAG_DIR) {
+ indx_clear(&ni->dir);
+ memset(&ni->dir, 0, sizeof(ni->dir));
+ ni->ni_flags &= ~NI_FLAG_DIR;
+ } else {
+ run_close(&ni->file.run);
+ }
+ mode = S_IFLNK | 0777;
+ is_dir = false;
+ if (attr->non_res) {
+ run = &ni->file.run;
+ goto attr_unpack_run; // double break
+ }
+ break;
+
+ case REPARSE_COMPRESSED:
+ break;
+
+ case REPARSE_DEDUPLICATED:
+ break;
+ }
+ goto next_attr;
+
+ case ATTR_EA_INFO:
+ if (!attr->name_len &&
+ resident_data_ex(attr, sizeof(struct EA_INFO))) {
+ ni->ni_flags |= NI_FLAG_EA;
+ /*
+ * ntfs_get_wsl_perm updates inode->i_uid, inode->i_gid, inode->i_mode
+ */
+ inode->i_mode = mode;
+ ntfs_get_wsl_perm(inode);
+ mode = inode->i_mode;
+ }
+ goto next_attr;
+
+ default:
+ goto next_attr;
+ }
+
+attr_unpack_run:
+ roff = le16_to_cpu(attr->nres.run_off);
+
+ t64 = le64_to_cpu(attr->nres.svcn);
+ err = run_unpack_ex(run, sbi, ino, t64, le64_to_cpu(attr->nres.evcn),
+ t64, Add2Ptr(attr, roff), asize - roff);
+ if (err < 0)
+ goto out;
+ err = 0;
+ goto next_attr;
+
+end_enum:
+
+ if (!std5)
+ goto out;
+
+ if (!is_match && name) {
+ /* reuse rec as buffer for ascii name */
+ err = -ENOENT;
+ goto out;
+ }
+
+ if (std5->fa & FILE_ATTRIBUTE_READONLY)
+ mode &= ~0222;
+
+ if (!names) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ set_nlink(inode, names);
+
+ if (S_ISDIR(mode)) {
+ ni->std_fa |= FILE_ATTRIBUTE_DIRECTORY;
+
+ /*
+ * dot and dot-dot should be included in count but was not
+ * included in enumeration.
+ * Usually a hard links to directories are disabled
+ */
+ inode->i_op = &ntfs_dir_inode_operations;
+ inode->i_fop = &ntfs_dir_operations;
+ ni->i_valid = 0;
+ } else if (S_ISLNK(mode)) {
+ ni->std_fa &= ~FILE_ATTRIBUTE_DIRECTORY;
+ inode->i_op = &ntfs_link_inode_operations;
+ inode->i_fop = NULL;
+ inode_nohighmem(inode); // ??
+ } else if (S_ISREG(mode)) {
+ ni->std_fa &= ~FILE_ATTRIBUTE_DIRECTORY;
+ inode->i_op = &ntfs_file_inode_operations;
+ inode->i_fop = &ntfs_file_operations;
+ inode->i_mapping->a_ops =
+ is_compressed(ni) ? &ntfs_aops_cmpr : &ntfs_aops;
+ if (ino != MFT_REC_MFT)
+ init_rwsem(&ni->file.run_lock);
+ } else if (S_ISCHR(mode) || S_ISBLK(mode) || S_ISFIFO(mode) ||
+ S_ISSOCK(mode)) {
+ inode->i_op = &ntfs_special_inode_operations;
+ init_special_inode(inode, mode, inode->i_rdev);
+ } else if (fname && fname->home.low == cpu_to_le32(MFT_REC_EXTEND) &&
+ fname->home.seq == cpu_to_le16(MFT_REC_EXTEND)) {
+ /* Records in $Extend are not a files or general directories */
+ } else {
+ err = -EINVAL;
+ goto out;
+ }
+
+ if ((sbi->options.sys_immutable &&
+ (std5->fa & FILE_ATTRIBUTE_SYSTEM)) &&
+ !S_ISFIFO(mode) && !S_ISSOCK(mode) && !S_ISLNK(mode)) {
+ inode->i_flags |= S_IMMUTABLE;
+ } else {
+ inode->i_flags &= ~S_IMMUTABLE;
+ }
+
+ inode->i_mode = mode;
+ if (!(ni->ni_flags & NI_FLAG_EA)) {
+ /* if no xattr then no security (stored in xattr) */
+ inode->i_flags |= S_NOSEC;
+ }
+
+Ok:
+ if (ino == MFT_REC_MFT && !sb->s_root)
+ sbi->mft.ni = NULL;
+
+ unlock_new_inode(inode);
+
+ return inode;
+
+out:
+ if (ino == MFT_REC_MFT && !sb->s_root)
+ sbi->mft.ni = NULL;
+
+ iget_failed(inode);
+ return ERR_PTR(err);
+}
+
+/* returns 1 if match */
+static int ntfs_test_inode(struct inode *inode, void *data)
+{
+ struct MFT_REF *ref = data;
+
+ return ino_get(ref) == inode->i_ino;
+}
+
+static int ntfs_set_inode(struct inode *inode, void *data)
+{
+ const struct MFT_REF *ref = data;
+
+ inode->i_ino = ino_get(ref);
+ return 0;
+}
+
+struct inode *ntfs_iget5(struct super_block *sb, const struct MFT_REF *ref,
+ const struct cpu_str *name)
+{
+ struct inode *inode;
+
+ inode = iget5_locked(sb, ino_get(ref), ntfs_test_inode, ntfs_set_inode,
+ (void *)ref);
+ if (unlikely(!inode))
+ return ERR_PTR(-ENOMEM);
+
+ /* If this is a freshly allocated inode, need to read it now. */
+ if (inode->i_state & I_NEW)
+ inode = ntfs_read_mft(inode, name, ref);
+ else if (ref->seq != ntfs_i(inode)->mi.mrec->seq) {
+ /* inode overlaps? */
+ make_bad_inode(inode);
+ }
+
+ return inode;
+}
+
+enum get_block_ctx {
+ GET_BLOCK_GENERAL = 0,
+ GET_BLOCK_WRITE_BEGIN = 1,
+ GET_BLOCK_DIRECT_IO_R = 2,
+ GET_BLOCK_DIRECT_IO_W = 3,
+ GET_BLOCK_BMAP = 4,
+};
+
+static noinline int ntfs_get_block_vbo(struct inode *inode, u64 vbo,
+ struct buffer_head *bh, int create,
+ enum get_block_ctx ctx)
+{
+ struct super_block *sb = inode->i_sb;
+ struct ntfs_sb_info *sbi = sb->s_fs_info;
+ struct ntfs_inode *ni = ntfs_i(inode);
+ struct page *page = bh->b_page;
+ u8 cluster_bits = sbi->cluster_bits;
+ u32 block_size = sb->s_blocksize;
+ u64 bytes, lbo, valid;
+ u32 off;
+ int err;
+ CLST vcn, lcn, len;
+ bool new;
+
+ /*clear previous state*/
+ clear_buffer_new(bh);
+ clear_buffer_uptodate(bh);
+
+ /* direct write uses 'create=0'*/
+ if (!create && vbo >= ni->i_valid) {
+ /* out of valid */
+ return 0;
+ }
+
+ if (vbo >= inode->i_size) {
+ /* out of size */
+ return 0;
+ }
+
+ if (is_resident(ni)) {
+ ni_lock(ni);
+ err = attr_data_read_resident(ni, page);
+ ni_unlock(ni);
+
+ if (!err)
+ set_buffer_uptodate(bh);
+ bh->b_size = block_size;
+ return err;
+ }
+
+ vcn = vbo >> cluster_bits;
+ off = vbo & sbi->cluster_mask;
+ new = false;
+
+ err = attr_data_get_block(ni, vcn, 1, &lcn, &len, create ? &new : NULL);
+ if (err)
+ goto out;
+
+ if (!len)
+ return 0;
+
+ bytes = ((u64)len << cluster_bits) - off;
+
+ if (lcn == SPARSE_LCN) {
+ if (!create) {
+ if (bh->b_size > bytes)
+ bh->b_size = bytes;
+ return 0;
+ }
+ WARN_ON(1);
+ }
+
+ if (new) {
+ set_buffer_new(bh);
+ if ((len << cluster_bits) > block_size)
+ ntfs_sparse_cluster(inode, page, vcn, len);
+ }
+
+ lbo = ((u64)lcn << cluster_bits) + off;
+
+ set_buffer_mapped(bh);
+ bh->b_bdev = sb->s_bdev;
+ bh->b_blocknr = lbo >> sb->s_blocksize_bits;
+
+ valid = ni->i_valid;
+
+ if (ctx == GET_BLOCK_DIRECT_IO_W) {
+ /*ntfs_direct_IO will update ni->i_valid */
+ if (vbo >= valid)
+ set_buffer_new(bh);
+ } else if (create) {
+ /*normal write*/
+ if (bytes > bh->b_size)
+ bytes = bh->b_size;
+
+ if (vbo >= valid)
+ set_buffer_new(bh);
+
+ if (vbo + bytes > valid) {
+ ni->i_valid = vbo + bytes;
+ mark_inode_dirty(inode);
+ }
+ } else if (vbo >= valid) {
+ /* read out of valid data*/
+ /* should never be here 'cause already checked */
+ clear_buffer_mapped(bh);
+ } else if (vbo + bytes <= valid) {
+ /* normal read */
+ } else if (vbo + block_size <= valid) {
+ /* normal short read */
+ bytes = block_size;
+ } else {
+ /*
+ * read across valid size: vbo < valid && valid < vbo + block_size
+ */
+ bytes = block_size;
+
+ if (page) {
+ u32 voff = valid - vbo;
+
+ bh->b_size = block_size;
+ off = vbo & (PAGE_SIZE - 1);
+ set_bh_page(bh, page, off);
+ ll_rw_block(REQ_OP_READ, 0, 1, &bh);
+ wait_on_buffer(bh);
+ if (!buffer_uptodate(bh)) {
+ err = -EIO;
+ goto out;
+ }
+ zero_user_segment(page, off + voff, off + block_size);
+ }
+ }
+
+ if (bh->b_size > bytes)
+ bh->b_size = bytes;
+
+#ifndef __LP64__
+ if (ctx == GET_BLOCK_DIRECT_IO_W || ctx == GET_BLOCK_DIRECT_IO_R) {
+ static_assert(sizeof(size_t) < sizeof(loff_t));
+ if (bytes > 0x40000000u)
+ bh->b_size = 0x40000000u;
+ }
+#endif
+
+ return 0;
+
+out:
+ return err;
+}
+
+int ntfs_get_block(struct inode *inode, sector_t vbn,
+ struct buffer_head *bh_result, int create)
+{
+ return ntfs_get_block_vbo(inode, (u64)vbn << inode->i_blkbits,
+ bh_result, create, GET_BLOCK_GENERAL);
+}
+
+static int ntfs_get_block_bmap(struct inode *inode, sector_t vsn,
+ struct buffer_head *bh_result, int create)
+{
+ return ntfs_get_block_vbo(inode,
+ (u64)vsn << inode->i_sb->s_blocksize_bits,
+ bh_result, create, GET_BLOCK_BMAP);
+}
+
+static sector_t ntfs_bmap(struct address_space *mapping, sector_t block)
+{
+ return generic_block_bmap(mapping, block, ntfs_get_block_bmap);
+}
+
+static int ntfs_readpage(struct file *file, struct page *page)
+{
+ int err;
+ struct address_space *mapping = page->mapping;
+ struct inode *inode = mapping->host;
+ struct ntfs_inode *ni = ntfs_i(inode);
+
+ if (is_resident(ni)) {
+ ni_lock(ni);
+ err = attr_data_read_resident(ni, page);
+ ni_unlock(ni);
+ if (err != E_NTFS_NONRESIDENT) {
+ unlock_page(page);
+ return err;
+ }
+ }
+
+ if (is_compressed(ni)) {
+ ni_lock(ni);
+ err = ni_readpage_cmpr(ni, page);
+ ni_unlock(ni);
+ return err;
+ }
+
+ /* normal + sparse files */
+ return mpage_readpage(page, ntfs_get_block);
+}
+
+static void ntfs_readahead(struct readahead_control *rac)
+{
+ struct address_space *mapping = rac->mapping;
+ struct inode *inode = mapping->host;
+ struct ntfs_inode *ni = ntfs_i(inode);
+ u64 valid;
+ loff_t pos;
+
+ if (is_resident(ni)) {
+ /* no readahead for resident */
+ return;
+ }
+
+ if (is_compressed(ni)) {
+ /* no readahead for compressed */
+ return;
+ }
+
+ valid = ni->i_valid;
+ pos = readahead_pos(rac);
+
+ if (valid < i_size_read(inode) && pos <= valid &&
+ valid < pos + readahead_length(rac)) {
+ /* range cross 'valid'. read it page by page */
+ return;
+ }
+
+ mpage_readahead(rac, ntfs_get_block);
+}
+
+static int ntfs_get_block_direct_IO_R(struct inode *inode, sector_t iblock,
+ struct buffer_head *bh_result, int create)
+{
+ return ntfs_get_block_vbo(inode, (u64)iblock << inode->i_blkbits,
+ bh_result, create, GET_BLOCK_DIRECT_IO_R);
+}
+
+static int ntfs_get_block_direct_IO_W(struct inode *inode, sector_t iblock,
+ struct buffer_head *bh_result, int create)
+{
+ return ntfs_get_block_vbo(inode, (u64)iblock << inode->i_blkbits,
+ bh_result, create, GET_BLOCK_DIRECT_IO_W);
+}
+
+static ssize_t ntfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
+{
+ struct file *file = iocb->ki_filp;
+ struct address_space *mapping = file->f_mapping;
+ struct inode *inode = mapping->host;
+ struct ntfs_inode *ni = ntfs_i(inode);
+ loff_t vbo = iocb->ki_pos;
+ loff_t end;
+ int wr = iov_iter_rw(iter) & WRITE;
+ loff_t valid;
+ ssize_t ret;
+
+ if (is_resident(ni)) {
+ /*switch to buffered write*/
+ ret = 0;
+ goto out;
+ }
+
+ ret = blockdev_direct_IO(iocb, inode, iter,
+ wr ? ntfs_get_block_direct_IO_W
+ : ntfs_get_block_direct_IO_R);
+
+ if (ret <= 0)
+ goto out;
+
+ end = vbo + ret;
+ valid = ni->i_valid;
+ if (wr) {
+ if (end > valid && !S_ISBLK(inode->i_mode)) {
+ ni->i_valid = end;
+ mark_inode_dirty(inode);
+ }
+ } else if (vbo < valid && valid < end) {
+ /* fix page */
+ iov_iter_revert(iter, end - valid);
+ iov_iter_zero(end - valid, iter);
+ }
+
+out:
+ return ret;
+}
+
+int ntfs_set_size(struct inode *inode, u64 new_size)
+{
+ struct super_block *sb = inode->i_sb;
+ struct ntfs_sb_info *sbi = sb->s_fs_info;
+ struct ntfs_inode *ni = ntfs_i(inode);
+ int err;
+
+ /* Check for maximum file size */
+ if (is_sparsed(ni) || is_compressed(ni)) {
+ if (new_size > sbi->maxbytes_sparse) {
+ err = -EFBIG;
+ goto out;
+ }
+ } else if (new_size > sbi->maxbytes) {
+ err = -EFBIG;
+ goto out;
+ }
+
+ ni_lock(ni);
+ down_write(&ni->file.run_lock);
+
+ err = attr_set_size(ni, ATTR_DATA, NULL, 0, &ni->file.run, new_size,
+ &ni->i_valid, true, NULL);
+
+ up_write(&ni->file.run_lock);
+ ni_unlock(ni);
+
+ mark_inode_dirty(inode);
+
+out:
+ return err;
+}
+
+static int ntfs_writepage(struct page *page, struct writeback_control *wbc)
+{
+ struct address_space *mapping = page->mapping;
+ struct inode *inode = mapping->host;
+ struct ntfs_inode *ni = ntfs_i(inode);
+ int err;
+
+ if (is_resident(ni)) {
+ ni_lock(ni);
+ err = attr_data_write_resident(ni, page);
+ ni_unlock(ni);
+ if (err != E_NTFS_NONRESIDENT) {
+ unlock_page(page);
+ return err;
+ }
+ }
+
+ return block_write_full_page(page, ntfs_get_block, wbc);
+}
+
+static int ntfs_writepages(struct address_space *mapping,
+ struct writeback_control *wbc)
+{
+ struct inode *inode = mapping->host;
+ struct ntfs_inode *ni = ntfs_i(inode);
+ /* redirect call to 'ntfs_writepage' for resident files*/
+ get_block_t *get_block = is_resident(ni) ? NULL : &ntfs_get_block;
+
+ return mpage_writepages(mapping, wbc, get_block);
+}
+
+static int ntfs_get_block_write_begin(struct inode *inode, sector_t vbn,
+ struct buffer_head *bh_result, int create)
+{
+ return ntfs_get_block_vbo(inode, (u64)vbn << inode->i_blkbits,
+ bh_result, create, GET_BLOCK_WRITE_BEGIN);
+}
+
+static int ntfs_write_begin(struct file *file, struct address_space *mapping,
+ loff_t pos, u32 len, u32 flags, struct page **pagep,
+ void **fsdata)
+{
+ int err;
+ struct inode *inode = mapping->host;
+ struct ntfs_inode *ni = ntfs_i(inode);
+
+ *pagep = NULL;
+ if (is_resident(ni)) {
+ struct page *page = grab_cache_page_write_begin(
+ mapping, pos >> PAGE_SHIFT, flags);
+
+ if (!page) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ ni_lock(ni);
+ err = attr_data_read_resident(ni, page);
+ ni_unlock(ni);
+
+ if (!err) {
+ *pagep = page;
+ goto out;
+ }
+ unlock_page(page);
+ put_page(page);
+
+ if (err != E_NTFS_NONRESIDENT)
+ goto out;
+ }
+
+ err = block_write_begin(mapping, pos, len, flags, pagep,
+ ntfs_get_block_write_begin);
+
+out:
+ return err;
+}
+
+/* address_space_operations::write_end */
+static int ntfs_write_end(struct file *file, struct address_space *mapping,
+ loff_t pos, u32 len, u32 copied, struct page *page,
+ void *fsdata)
+
+{
+ struct inode *inode = mapping->host;
+ struct ntfs_inode *ni = ntfs_i(inode);
+ u64 valid = ni->i_valid;
+ bool dirty = false;
+ int err;
+
+ if (is_resident(ni)) {
+ ni_lock(ni);
+ err = attr_data_write_resident(ni, page);
+ ni_unlock(ni);
+ if (!err) {
+ dirty = true;
+ /* clear any buffers in page*/
+ if (page_has_buffers(page)) {
+ struct buffer_head *head, *bh;
+
+ bh = head = page_buffers(page);
+ do {
+ clear_buffer_dirty(bh);
+ clear_buffer_mapped(bh);
+ set_buffer_uptodate(bh);
+ } while (head != (bh = bh->b_this_page));
+ }
+ SetPageUptodate(page);
+ err = copied;
+ }
+ unlock_page(page);
+ put_page(page);
+ } else {
+ err = generic_write_end(file, mapping, pos, len, copied, page,
+ fsdata);
+ }
+
+ if (err >= 0) {
+ if (!(ni->std_fa & FILE_ATTRIBUTE_ARCHIVE)) {
+ inode->i_ctime = inode->i_mtime = current_time(inode);
+ ni->std_fa |= FILE_ATTRIBUTE_ARCHIVE;
+ dirty = true;
+ }
+
+ if (valid != ni->i_valid) {
+ /* ni->i_valid is changed in ntfs_get_block_vbo */
+ dirty = true;
+ }
+
+ if (dirty)
+ mark_inode_dirty(inode);
+ }
+
+ return err;
+}
+
+int reset_log_file(struct inode *inode)
+{
+ int err;
+ loff_t pos = 0;
+ u32 log_size = inode->i_size;
+ struct address_space *mapping = inode->i_mapping;
+
+ for (;;) {
+ u32 len;
+ void *kaddr;
+ struct page *page;
+
+ len = pos + PAGE_SIZE > log_size ? (log_size - pos) : PAGE_SIZE;
+
+ err = block_write_begin(mapping, pos, len, 0, &page,
+ ntfs_get_block_write_begin);
+ if (err)
+ goto out;
+
+ kaddr = kmap_atomic(page);
+ memset(kaddr, -1, len);
+ kunmap_atomic(kaddr);
+ flush_dcache_page(page);
+
+ err = block_write_end(NULL, mapping, pos, len, len, page, NULL);
+ if (err < 0)
+ goto out;
+ pos += len;
+
+ if (pos >= log_size)
+ break;
+ balance_dirty_pages_ratelimited(mapping);
+ }
+out:
+ mark_inode_dirty_sync(inode);
+
+ return err;
+}
+
+int ntfs3_write_inode(struct inode *inode, struct writeback_control *wbc)
+{
+ return _ni_write_inode(inode, wbc->sync_mode == WB_SYNC_ALL);
+}
+
+int ntfs_sync_inode(struct inode *inode)
+{
+ return _ni_write_inode(inode, 1);
+}
+
+/*
+ * helper function for ntfs_flush_inodes. This writes both the inode
+ * and the file data blocks, waiting for in flight data blocks before
+ * the start of the call. It does not wait for any io started
+ * during the call
+ */
+static int writeback_inode(struct inode *inode)
+{
+ int ret = sync_inode_metadata(inode, 0);
+
+ if (!ret)
+ ret = filemap_fdatawrite(inode->i_mapping);
+ return ret;
+}
+
+/*
+ * write data and metadata corresponding to i1 and i2. The io is
+ * started but we do not wait for any of it to finish.
+ *
+ * filemap_flush is used for the block device, so if there is a dirty
+ * page for a block already in flight, we will not wait and start the
+ * io over again
+ */
+int ntfs_flush_inodes(struct super_block *sb, struct inode *i1,
+ struct inode *i2)
+{
+ int ret = 0;
+
+ if (i1)
+ ret = writeback_inode(i1);
+ if (!ret && i2)
+ ret = writeback_inode(i2);
+ if (!ret)
+ ret = filemap_flush(sb->s_bdev->bd_inode->i_mapping);
+ return ret;
+}
+
+int inode_write_data(struct inode *inode, const void *data, size_t bytes)
+{
+ pgoff_t idx;
+
+ /* Write non resident data */
+ for (idx = 0; bytes; idx++) {
+ size_t op = bytes > PAGE_SIZE ? PAGE_SIZE : bytes;
+ struct page *page = ntfs_map_page(inode->i_mapping, idx);
+
+ if (IS_ERR(page))
+ return PTR_ERR(page);
+
+ lock_page(page);
+ WARN_ON(!PageUptodate(page));
+ ClearPageUptodate(page);
+
+ memcpy(page_address(page), data, op);
+
+ flush_dcache_page(page);
+ SetPageUptodate(page);
+ unlock_page(page);
+
+ ntfs_unmap_page(page);
+
+ bytes -= op;
+ data = Add2Ptr(data, PAGE_SIZE);
+ }
+ return 0;
+}
+
+/*
+ * number of bytes to for REPARSE_DATA_BUFFER(IO_REPARSE_TAG_SYMLINK)
+ * for unicode string of 'uni_len' length
+ */
+static inline u32 ntfs_reparse_bytes(u32 uni_len)
+{
+ /* header + unicode string + decorated unicode string */
+ return sizeof(short) * (2 * uni_len + 4) +
+ offsetof(struct REPARSE_DATA_BUFFER,
+ SymbolicLinkReparseBuffer.PathBuffer);
+}
+
+static struct REPARSE_DATA_BUFFER *
+ntfs_create_reparse_buffer(struct ntfs_sb_info *sbi, const char *symname,
+ u32 size, u16 *nsize)
+{
+ int i, err;
+ struct REPARSE_DATA_BUFFER *rp;
+ __le16 *rp_name;
+ typeof(rp->SymbolicLinkReparseBuffer) *rs;
+
+ rp = ntfs_zalloc(ntfs_reparse_bytes(2 * size + 2));
+ if (!rp)
+ return ERR_PTR(-ENOMEM);
+
+ rs = &rp->SymbolicLinkReparseBuffer;
+ rp_name = rs->PathBuffer;
+
+ /* Convert link name to utf16 */
+ err = ntfs_nls_to_utf16(sbi, symname, size,
+ (struct cpu_str *)(rp_name - 1), 2 * size,
+ UTF16_LITTLE_ENDIAN);
+ if (err < 0)
+ goto out;
+
+ /* err = the length of unicode name of symlink */
+ *nsize = ntfs_reparse_bytes(err);
+
+ if (*nsize > sbi->reparse.max_size) {
+ err = -EFBIG;
+ goto out;
+ }
+
+ /* translate linux '/' into windows '\' */
+ for (i = 0; i < err; i++) {
+ if (rp_name[i] == cpu_to_le16('/'))
+ rp_name[i] = cpu_to_le16('\\');
+ }
+
+ rp->ReparseTag = IO_REPARSE_TAG_SYMLINK;
+ rp->ReparseDataLength =
+ cpu_to_le16(*nsize - offsetof(struct REPARSE_DATA_BUFFER,
+ SymbolicLinkReparseBuffer));
+
+ /* PrintName + SubstituteName */
+ rs->SubstituteNameOffset = cpu_to_le16(sizeof(short) * err);
+ rs->SubstituteNameLength = cpu_to_le16(sizeof(short) * err + 8);
+ rs->PrintNameLength = rs->SubstituteNameOffset;
+
+ /*
+ * TODO: use relative path if possible to allow windows to parse this path
+ * 0-absolute path 1- relative path (SYMLINK_FLAG_RELATIVE)
+ */
+ rs->Flags = 0;
+
+ memmove(rp_name + err + 4, rp_name, sizeof(short) * err);
+
+ /* decorate SubstituteName */
+ rp_name += err;
+ rp_name[0] = cpu_to_le16('\\');
+ rp_name[1] = cpu_to_le16('?');
+ rp_name[2] = cpu_to_le16('?');
+ rp_name[3] = cpu_to_le16('\\');
+
+ return rp;
+out:
+ ntfs_free(rp);
+ return ERR_PTR(err);
+}
+
+struct inode *ntfs_create_inode(struct user_namespace *mnt_userns,
+ struct inode *dir, struct dentry *dentry,
+ const struct cpu_str *uni, umode_t mode,
+ dev_t dev, const char *symname, u32 size,
+ struct ntfs_fnd *fnd)
+{
+ int err;
+ struct super_block *sb = dir->i_sb;
+ struct ntfs_sb_info *sbi = sb->s_fs_info;
+ const struct qstr *name = &dentry->d_name;
+ CLST ino = 0;
+ struct ntfs_inode *dir_ni = ntfs_i(dir);
+ struct ntfs_inode *ni = NULL;
+ struct inode *inode = NULL;
+ struct ATTRIB *attr;
+ struct ATTR_STD_INFO5 *std5;
+ struct ATTR_FILE_NAME *fname;
+ struct MFT_REC *rec;
+ u32 asize, dsize, sd_size;
+ enum FILE_ATTRIBUTE fa;
+ __le32 security_id = SECURITY_ID_INVALID;
+ CLST vcn;
+ const void *sd;
+ u16 t16, nsize = 0, aid = 0;
+ struct INDEX_ROOT *root, *dir_root;
+ struct NTFS_DE *e, *new_de = NULL;
+ struct REPARSE_DATA_BUFFER *rp = NULL;
+ bool rp_inserted = false;
+
+ dir_root = indx_get_root(&dir_ni->dir, dir_ni, NULL, NULL);
+ if (!dir_root)
+ return ERR_PTR(-EINVAL);
+
+ if (S_ISDIR(mode)) {
+ /* use parent's directory attributes */
+ fa = dir_ni->std_fa | FILE_ATTRIBUTE_DIRECTORY |
+ FILE_ATTRIBUTE_ARCHIVE;
+ /*
+ * By default child directory inherits parent attributes
+ * root directory is hidden + system
+ * Make an exception for children in root
+ */
+ if (dir->i_ino == MFT_REC_ROOT)
+ fa &= ~(FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_SYSTEM);
+ } else if (S_ISLNK(mode)) {
+ /* It is good idea that link should be the same type (file/dir) as target */
+ fa = FILE_ATTRIBUTE_REPARSE_POINT;
+
+ /*
+ * linux: there are dir/file/symlink and so on
+ * NTFS: symlinks are "dir + reparse" or "file + reparse"
+ * It is good idea to create:
+ * dir + reparse if 'symname' points to directory
+ * or
+ * file + reparse if 'symname' points to file
+ * Unfortunately kern_path hangs if symname contains 'dir'
+ */
+
+ /*
+ * struct path path;
+ *
+ * if (!kern_path(symname, LOOKUP_FOLLOW, &path)){
+ * struct inode *target = d_inode(path.dentry);
+ *
+ * if (S_ISDIR(target->i_mode))
+ * fa |= FILE_ATTRIBUTE_DIRECTORY;
+ * // if ( target->i_sb == sb ){
+ * // use relative path?
+ * // }
+ * path_put(&path);
+ * }
+ */
+ } else if (S_ISREG(mode)) {
+ if (sbi->options.sparse) {
+ /* sparsed regular file, cause option 'sparse' */
+ fa = FILE_ATTRIBUTE_SPARSE_FILE |
+ FILE_ATTRIBUTE_ARCHIVE;
+ } else if (dir_ni->std_fa & FILE_ATTRIBUTE_COMPRESSED) {
+ /* compressed regular file, if parent is compressed */
+ fa = FILE_ATTRIBUTE_COMPRESSED | FILE_ATTRIBUTE_ARCHIVE;
+ } else {
+ /* regular file, default attributes */
+ fa = FILE_ATTRIBUTE_ARCHIVE;
+ }
+ } else {
+ fa = FILE_ATTRIBUTE_ARCHIVE;
+ }
+
+ if (!(mode & 0222))
+ fa |= FILE_ATTRIBUTE_READONLY;
+
+ /* allocate PATH_MAX bytes */
+ new_de = __getname();
+ if (!new_de) {
+ err = -ENOMEM;
+ goto out1;
+ }
+
+ /*mark rw ntfs as dirty. it will be cleared at umount*/
+ ntfs_set_state(sbi, NTFS_DIRTY_DIRTY);
+
+ /* Step 1: allocate and fill new mft record */
+ err = ntfs_look_free_mft(sbi, &ino, false, NULL, NULL);
+ if (err)
+ goto out2;
+
+ ni = ntfs_new_inode(sbi, ino, fa & FILE_ATTRIBUTE_DIRECTORY);
+ if (IS_ERR(ni)) {
+ err = PTR_ERR(ni);
+ ni = NULL;
+ goto out3;
+ }
+ inode = &ni->vfs_inode;
+ inode_init_owner(mnt_userns, inode, dir, mode);
+
+ inode->i_atime = inode->i_mtime = inode->i_ctime = ni->i_crtime =
+ current_time(inode);
+
+ rec = ni->mi.mrec;
+ rec->hard_links = cpu_to_le16(1);
+ attr = Add2Ptr(rec, le16_to_cpu(rec->attr_off));
+
+ /* Get default security id */
+ sd = s_default_security;
+ sd_size = sizeof(s_default_security);
+
+ if (is_ntfs3(sbi)) {
+ security_id = dir_ni->std_security_id;
+ if (le32_to_cpu(security_id) < SECURITY_ID_FIRST) {
+ security_id = sbi->security.def_security_id;
+
+ if (security_id == SECURITY_ID_INVALID &&
+ !ntfs_insert_security(sbi, sd, sd_size,
+ &security_id, NULL))
+ sbi->security.def_security_id = security_id;
+ }
+ }
+
+ /* Insert standard info */
+ std5 = Add2Ptr(attr, SIZEOF_RESIDENT);
+
+ if (security_id == SECURITY_ID_INVALID) {
+ dsize = sizeof(struct ATTR_STD_INFO);
+ } else {
+ dsize = sizeof(struct ATTR_STD_INFO5);
+ std5->security_id = security_id;
+ ni->std_security_id = security_id;
+ }
+ asize = SIZEOF_RESIDENT + dsize;
+
+ attr->type = ATTR_STD;
+ attr->size = cpu_to_le32(asize);
+ attr->id = cpu_to_le16(aid++);
+ attr->res.data_off = SIZEOF_RESIDENT_LE;
+ attr->res.data_size = cpu_to_le32(dsize);
+
+ std5->cr_time = std5->m_time = std5->c_time = std5->a_time =
+ kernel2nt(&inode->i_atime);
+
+ ni->std_fa = fa;
+ std5->fa = fa;
+
+ attr = Add2Ptr(attr, asize);
+
+ /* Insert file name */
+ err = fill_name_de(sbi, new_de, name, uni);
+ if (err)
+ goto out4;
+
+ mi_get_ref(&ni->mi, &new_de->ref);
+
+ fname = (struct ATTR_FILE_NAME *)(new_de + 1);
+ mi_get_ref(&dir_ni->mi, &fname->home);
+ fname->dup.cr_time = fname->dup.m_time = fname->dup.c_time =
+ fname->dup.a_time = std5->cr_time;
+ fname->dup.alloc_size = fname->dup.data_size = 0;
+ fname->dup.fa = std5->fa;
+ fname->dup.ea_size = fname->dup.reparse = 0;
+
+ dsize = le16_to_cpu(new_de->key_size);
+ asize = QuadAlign(SIZEOF_RESIDENT + dsize);
+
+ attr->type = ATTR_NAME;
+ attr->size = cpu_to_le32(asize);
+ attr->res.data_off = SIZEOF_RESIDENT_LE;
+ attr->res.flags = RESIDENT_FLAG_INDEXED;
+ attr->id = cpu_to_le16(aid++);
+ attr->res.data_size = cpu_to_le32(dsize);
+ memcpy(Add2Ptr(attr, SIZEOF_RESIDENT), fname, dsize);
+
+ attr = Add2Ptr(attr, asize);
+
+ if (security_id == SECURITY_ID_INVALID) {
+ /* Insert security attribute */
+ asize = SIZEOF_RESIDENT + QuadAlign(sd_size);
+
+ attr->type = ATTR_SECURE;
+ attr->size = cpu_to_le32(asize);
+ attr->id = cpu_to_le16(aid++);
+ attr->res.data_off = SIZEOF_RESIDENT_LE;
+ attr->res.data_size = cpu_to_le32(sd_size);
+ memcpy(Add2Ptr(attr, SIZEOF_RESIDENT), sd, sd_size);
+
+ attr = Add2Ptr(attr, asize);
+ }
+
+ if (fa & FILE_ATTRIBUTE_DIRECTORY) {
+ /*
+ * regular directory or symlink to directory
+ * Create root attribute
+ */
+ dsize = sizeof(struct INDEX_ROOT) + sizeof(struct NTFS_DE);
+ asize = sizeof(I30_NAME) + SIZEOF_RESIDENT + dsize;
+
+ attr->type = ATTR_ROOT;
+ attr->size = cpu_to_le32(asize);
+ attr->id = cpu_to_le16(aid++);
+
+ attr->name_len = ARRAY_SIZE(I30_NAME);
+ attr->name_off = SIZEOF_RESIDENT_LE;
+ attr->res.data_off =
+ cpu_to_le16(sizeof(I30_NAME) + SIZEOF_RESIDENT);
+ attr->res.data_size = cpu_to_le32(dsize);
+ memcpy(Add2Ptr(attr, SIZEOF_RESIDENT), I30_NAME,
+ sizeof(I30_NAME));
+
+ root = Add2Ptr(attr, sizeof(I30_NAME) + SIZEOF_RESIDENT);
+ memcpy(root, dir_root, offsetof(struct INDEX_ROOT, ihdr));
+ root->ihdr.de_off =
+ cpu_to_le32(sizeof(struct INDEX_HDR)); // 0x10
+ root->ihdr.used = cpu_to_le32(sizeof(struct INDEX_HDR) +
+ sizeof(struct NTFS_DE));
+ root->ihdr.total = root->ihdr.used;
+
+ e = Add2Ptr(root, sizeof(struct INDEX_ROOT));
+ e->size = cpu_to_le16(sizeof(struct NTFS_DE));
+ e->flags = NTFS_IE_LAST;
+ } else if (S_ISLNK(mode)) {
+ /*
+ * symlink to file
+ * Create empty resident data attribute
+ */
+ asize = SIZEOF_RESIDENT;
+
+ /* insert empty ATTR_DATA */
+ attr->type = ATTR_DATA;
+ attr->size = cpu_to_le32(SIZEOF_RESIDENT);
+ attr->id = cpu_to_le16(aid++);
+ attr->name_off = SIZEOF_RESIDENT_LE;
+ attr->res.data_off = SIZEOF_RESIDENT_LE;
+ } else {
+ /*
+ * regular file or node
+ */
+ attr->type = ATTR_DATA;
+ attr->id = cpu_to_le16(aid++);
+
+ if (S_ISREG(mode)) {
+ /* Create empty non resident data attribute */
+ attr->non_res = 1;
+ attr->nres.evcn = cpu_to_le64(-1ll);
+ if (fa & FILE_ATTRIBUTE_SPARSE_FILE) {
+ attr->size =
+ cpu_to_le32(SIZEOF_NONRESIDENT_EX + 8);
+ attr->name_off = SIZEOF_NONRESIDENT_EX_LE;
+ attr->flags = ATTR_FLAG_SPARSED;
+ asize = SIZEOF_NONRESIDENT_EX + 8;
+ } else if (fa & FILE_ATTRIBUTE_COMPRESSED) {
+ attr->size =
+ cpu_to_le32(SIZEOF_NONRESIDENT_EX + 8);
+ attr->name_off = SIZEOF_NONRESIDENT_EX_LE;
+ attr->flags = ATTR_FLAG_COMPRESSED;
+ attr->nres.c_unit = COMPRESSION_UNIT;
+ asize = SIZEOF_NONRESIDENT_EX + 8;
+ } else {
+ attr->size =
+ cpu_to_le32(SIZEOF_NONRESIDENT + 8);
+ attr->name_off = SIZEOF_NONRESIDENT_LE;
+ asize = SIZEOF_NONRESIDENT + 8;
+ }
+ attr->nres.run_off = attr->name_off;
+ } else {
+ /* Create empty resident data attribute */
+ attr->size = cpu_to_le32(SIZEOF_RESIDENT);
+ attr->name_off = SIZEOF_RESIDENT_LE;
+ if (fa & FILE_ATTRIBUTE_SPARSE_FILE)
+ attr->flags = ATTR_FLAG_SPARSED;
+ else if (fa & FILE_ATTRIBUTE_COMPRESSED)
+ attr->flags = ATTR_FLAG_COMPRESSED;
+ attr->res.data_off = SIZEOF_RESIDENT_LE;
+ asize = SIZEOF_RESIDENT;
+ ni->ni_flags |= NI_FLAG_RESIDENT;
+ }
+ }
+
+ if (S_ISDIR(mode)) {
+ ni->ni_flags |= NI_FLAG_DIR;
+ err = indx_init(&ni->dir, sbi, attr, INDEX_MUTEX_I30);
+ if (err)
+ goto out4;
+ } else if (S_ISLNK(mode)) {
+ rp = ntfs_create_reparse_buffer(sbi, symname, size, &nsize);
+
+ if (IS_ERR(rp)) {
+ err = PTR_ERR(rp);
+ rp = NULL;
+ goto out4;
+ }
+
+ /*
+ * Insert ATTR_REPARSE
+ */
+ attr = Add2Ptr(attr, asize);
+ attr->type = ATTR_REPARSE;
+ attr->id = cpu_to_le16(aid++);
+
+ /* resident or non resident? */
+ asize = QuadAlign(SIZEOF_RESIDENT + nsize);
+ t16 = PtrOffset(rec, attr);
+
+ if (asize + t16 + 8 > sbi->record_size) {
+ CLST alen;
+ CLST clst = bytes_to_cluster(sbi, nsize);
+
+ /* bytes per runs */
+ t16 = sbi->record_size - t16 - SIZEOF_NONRESIDENT;
+
+ attr->non_res = 1;
+ attr->nres.evcn = cpu_to_le64(clst - 1);
+ attr->name_off = SIZEOF_NONRESIDENT_LE;
+ attr->nres.run_off = attr->name_off;
+ attr->nres.data_size = cpu_to_le64(nsize);
+ attr->nres.valid_size = attr->nres.data_size;
+ attr->nres.alloc_size =
+ cpu_to_le64(ntfs_up_cluster(sbi, nsize));
+
+ err = attr_allocate_clusters(sbi, &ni->file.run, 0, 0,
+ clst, NULL, 0, &alen, 0,
+ NULL);
+ if (err)
+ goto out5;
+
+ err = run_pack(&ni->file.run, 0, clst,
+ Add2Ptr(attr, SIZEOF_NONRESIDENT), t16,
+ &vcn);
+ if (err < 0)
+ goto out5;
+
+ if (vcn != clst) {
+ err = -EINVAL;
+ goto out5;
+ }
+
+ asize = SIZEOF_NONRESIDENT + QuadAlign(err);
+ inode->i_size = nsize;
+ } else {
+ attr->res.data_off = SIZEOF_RESIDENT_LE;
+ attr->res.data_size = cpu_to_le32(nsize);
+ memcpy(Add2Ptr(attr, SIZEOF_RESIDENT), rp, nsize);
+ inode->i_size = nsize;
+ nsize = 0;
+ }
+
+ attr->size = cpu_to_le32(asize);
+
+ err = ntfs_insert_reparse(sbi, IO_REPARSE_TAG_SYMLINK,
+ &new_de->ref);
+ if (err)
+ goto out5;
+
+ rp_inserted = true;
+ }
+
+ attr = Add2Ptr(attr, asize);
+ attr->type = ATTR_END;
+
+ rec->used = cpu_to_le32(PtrOffset(rec, attr) + 8);
+ rec->next_attr_id = cpu_to_le16(aid);
+
+ /* Step 2: Add new name in index */
+ err = indx_insert_entry(&dir_ni->dir, dir_ni, new_de, sbi, fnd);
+ if (err)
+ goto out6;
+
+ /* Update current directory record */
+ mark_inode_dirty(dir);
+
+ inode->i_generation = le16_to_cpu(rec->seq);
+
+ dir->i_mtime = dir->i_ctime = inode->i_atime;
+
+ if (S_ISDIR(mode)) {
+ if (dir->i_mode & S_ISGID)
+ mode |= S_ISGID;
+ inode->i_op = &ntfs_dir_inode_operations;
+ inode->i_fop = &ntfs_dir_operations;
+ } else if (S_ISLNK(mode)) {
+ inode->i_op = &ntfs_link_inode_operations;
+ inode->i_fop = NULL;
+ inode->i_mapping->a_ops = &ntfs_aops;
+ } else if (S_ISREG(mode)) {
+ inode->i_op = &ntfs_file_inode_operations;
+ inode->i_fop = &ntfs_file_operations;
+ inode->i_mapping->a_ops =
+ is_compressed(ni) ? &ntfs_aops_cmpr : &ntfs_aops;
+ init_rwsem(&ni->file.run_lock);
+ } else {
+ inode->i_op = &ntfs_special_inode_operations;
+ init_special_inode(inode, mode, dev);
+ }
+
+#ifdef CONFIG_NTFS3_FS_POSIX_ACL
+ if (!S_ISLNK(mode) && (sb->s_flags & SB_POSIXACL)) {
+ err = ntfs_init_acl(mnt_userns, inode, dir);
+ if (err)
+ goto out6;
+ } else
+#endif
+ {
+ inode->i_flags |= S_NOSEC;
+ }
+
+ /* Write non resident data */
+ if (nsize) {
+ err = ntfs_sb_write_run(sbi, &ni->file.run, 0, rp, nsize);
+ if (err)
+ goto out7;
+ }
+
+ /* call 'd_instantiate' after inode->i_op is set but before finish_open */
+ d_instantiate(dentry, inode);
+
+ ntfs_save_wsl_perm(inode);
+ mark_inode_dirty(inode);
+ mark_inode_dirty(dir);
+
+ /* normal exit */
+ goto out2;
+
+out7:
+
+ /* undo 'indx_insert_entry' */
+ indx_delete_entry(&dir_ni->dir, dir_ni, new_de + 1,
+ le16_to_cpu(new_de->key_size), sbi);
+out6:
+ if (rp_inserted)
+ ntfs_remove_reparse(sbi, IO_REPARSE_TAG_SYMLINK, &new_de->ref);
+
+out5:
+ if (S_ISDIR(mode) || run_is_empty(&ni->file.run))
+ goto out4;
+
+ run_deallocate(sbi, &ni->file.run, false);
+
+out4:
+ clear_rec_inuse(rec);
+ clear_nlink(inode);
+ ni->mi.dirty = false;
+ discard_new_inode(inode);
+out3:
+ ntfs_mark_rec_free(sbi, ino);
+
+out2:
+ __putname(new_de);
+ ntfs_free(rp);
+
+out1:
+ if (err)
+ return ERR_PTR(err);
+
+ unlock_new_inode(inode);
+
+ return inode;
+}
+
+int ntfs_link_inode(struct inode *inode, struct dentry *dentry)
+{
+ int err;
+ struct inode *dir = d_inode(dentry->d_parent);
+ struct ntfs_inode *dir_ni = ntfs_i(dir);
+ struct ntfs_inode *ni = ntfs_i(inode);
+ struct super_block *sb = inode->i_sb;
+ struct ntfs_sb_info *sbi = sb->s_fs_info;
+ const struct qstr *name = &dentry->d_name;
+ struct NTFS_DE *new_de = NULL;
+ struct ATTR_FILE_NAME *fname;
+ struct ATTRIB *attr;
+ u16 key_size;
+ struct INDEX_ROOT *dir_root;
+
+ dir_root = indx_get_root(&dir_ni->dir, dir_ni, NULL, NULL);
+ if (!dir_root)
+ return -EINVAL;
+
+ /* allocate PATH_MAX bytes */
+ new_de = __getname();
+ if (!new_de)
+ return -ENOMEM;
+
+ /*mark rw ntfs as dirty. it will be cleared at umount*/
+ ntfs_set_state(ni->mi.sbi, NTFS_DIRTY_DIRTY);
+
+ // Insert file name
+ err = fill_name_de(sbi, new_de, name, NULL);
+ if (err)
+ goto out;
+
+ key_size = le16_to_cpu(new_de->key_size);
+ err = ni_insert_resident(ni, key_size, ATTR_NAME, NULL, 0, &attr, NULL);
+ if (err)
+ goto out;
+
+ mi_get_ref(&ni->mi, &new_de->ref);
+
+ fname = (struct ATTR_FILE_NAME *)(new_de + 1);
+ mi_get_ref(&dir_ni->mi, &fname->home);
+ fname->dup.cr_time = fname->dup.m_time = fname->dup.c_time =
+ fname->dup.a_time = kernel2nt(&inode->i_ctime);
+ fname->dup.alloc_size = fname->dup.data_size = 0;
+ fname->dup.fa = ni->std_fa;
+ fname->dup.ea_size = fname->dup.reparse = 0;
+
+ memcpy(Add2Ptr(attr, SIZEOF_RESIDENT), fname, key_size);
+
+ err = indx_insert_entry(&dir_ni->dir, dir_ni, new_de, sbi, NULL);
+ if (err)
+ goto out;
+
+ le16_add_cpu(&ni->mi.mrec->hard_links, 1);
+ ni->mi.dirty = true;
+
+out:
+ __putname(new_de);
+ return err;
+}
+
+/*
+ * ntfs_unlink_inode
+ *
+ * inode_operations::unlink
+ * inode_operations::rmdir
+ */
+int ntfs_unlink_inode(struct inode *dir, const struct dentry *dentry)
+{
+ int err;
+ struct super_block *sb = dir->i_sb;
+ struct ntfs_sb_info *sbi = sb->s_fs_info;
+ struct inode *inode = d_inode(dentry);
+ struct ntfs_inode *ni = ntfs_i(inode);
+ const struct qstr *name = &dentry->d_name;
+ struct ntfs_inode *dir_ni = ntfs_i(dir);
+ struct ntfs_index *indx = &dir_ni->dir;
+ struct cpu_str *uni = NULL;
+ struct ATTR_FILE_NAME *fname;
+ u8 name_type;
+ struct ATTR_LIST_ENTRY *le;
+ struct MFT_REF ref;
+ bool is_dir = S_ISDIR(inode->i_mode);
+ struct INDEX_ROOT *dir_root;
+
+ dir_root = indx_get_root(indx, dir_ni, NULL, NULL);
+ if (!dir_root)
+ return -EINVAL;
+
+ ni_lock(ni);
+
+ if (is_dir && !dir_is_empty(inode)) {
+ err = -ENOTEMPTY;
+ goto out1;
+ }
+
+ if (ntfs_is_meta_file(sbi, inode->i_ino)) {
+ err = -EINVAL;
+ goto out1;
+ }
+
+ /* allocate PATH_MAX bytes */
+ uni = __getname();
+ if (!uni) {
+ err = -ENOMEM;
+ goto out1;
+ }
+
+ /* Convert input string to unicode */
+ err = ntfs_nls_to_utf16(sbi, name->name, name->len, uni, NTFS_NAME_LEN,
+ UTF16_HOST_ENDIAN);
+ if (err < 0)
+ goto out2;
+
+ /*mark rw ntfs as dirty. it will be cleared at umount*/
+ ntfs_set_state(sbi, NTFS_DIRTY_DIRTY);
+
+ /* find name in record */
+ mi_get_ref(&dir_ni->mi, &ref);
+
+ le = NULL;
+ fname = ni_fname_name(ni, uni, &ref, &le);
+ if (!fname) {
+ err = -ENOENT;
+ goto out3;
+ }
+
+ name_type = paired_name(fname->type);
+
+ err = indx_delete_entry(indx, dir_ni, fname, fname_full_size(fname),
+ sbi);
+ if (err)
+ goto out3;
+
+ /* Then remove name from mft */
+ ni_remove_attr_le(ni, attr_from_name(fname), le);
+
+ le16_add_cpu(&ni->mi.mrec->hard_links, -1);
+ ni->mi.dirty = true;
+
+ if (name_type != FILE_NAME_POSIX) {
+ /* Now we should delete name by type */
+ fname = ni_fname_type(ni, name_type, &le);
+ if (fname) {
+ err = indx_delete_entry(indx, dir_ni, fname,
+ fname_full_size(fname), sbi);
+ if (err)
+ goto out3;
+
+ ni_remove_attr_le(ni, attr_from_name(fname), le);
+
+ le16_add_cpu(&ni->mi.mrec->hard_links, -1);
+ }
+ }
+out3:
+ switch (err) {
+ case 0:
+ drop_nlink(inode);
+ case -ENOTEMPTY:
+ case -ENOSPC:
+ case -EROFS:
+ break;
+ default:
+ make_bad_inode(inode);
+ }
+
+ dir->i_mtime = dir->i_ctime = current_time(dir);
+ mark_inode_dirty(dir);
+ inode->i_ctime = dir->i_ctime;
+ if (inode->i_nlink)
+ mark_inode_dirty(inode);
+
+out2:
+ __putname(uni);
+out1:
+ ni_unlock(ni);
+ return err;
+}
+
+void ntfs_evict_inode(struct inode *inode)
+{
+ truncate_inode_pages_final(&inode->i_data);
+
+ if (inode->i_nlink)
+ _ni_write_inode(inode, inode_needs_sync(inode));
+
+ invalidate_inode_buffers(inode);
+ clear_inode(inode);
+
+ ni_clear(ntfs_i(inode));
+}
+
+static noinline int ntfs_readlink_hlp(struct inode *inode, char *buffer,
+ int buflen)
+{
+ int i, err = 0;
+ struct ntfs_inode *ni = ntfs_i(inode);
+ struct super_block *sb = inode->i_sb;
+ struct ntfs_sb_info *sbi = sb->s_fs_info;
+ u64 i_size = inode->i_size;
+ u16 nlen = 0;
+ void *to_free = NULL;
+ struct REPARSE_DATA_BUFFER *rp;
+ struct le_str *uni;
+ struct ATTRIB *attr;
+
+ /* Reparse data present. Try to parse it */
+ static_assert(!offsetof(struct REPARSE_DATA_BUFFER, ReparseTag));
+ static_assert(sizeof(u32) == sizeof(rp->ReparseTag));
+
+ *buffer = 0;
+
+ /* Read into temporal buffer */
+ if (i_size > sbi->reparse.max_size || i_size <= sizeof(u32)) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ attr = ni_find_attr(ni, NULL, NULL, ATTR_REPARSE, NULL, 0, NULL, NULL);
+ if (!attr) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ if (!attr->non_res) {
+ rp = resident_data_ex(attr, i_size);
+ if (!rp) {
+ err = -EINVAL;
+ goto out;
+ }
+ } else {
+ rp = ntfs_malloc(i_size);
+ if (!rp) {
+ err = -ENOMEM;
+ goto out;
+ }
+ to_free = rp;
+ err = ntfs_read_run_nb(sbi, &ni->file.run, 0, rp, i_size, NULL);
+ if (err)
+ goto out;
+ }
+
+ err = -EINVAL;
+
+ /* Microsoft Tag */
+ switch (rp->ReparseTag) {
+ case IO_REPARSE_TAG_MOUNT_POINT:
+ /* Mount points and junctions */
+ /* Can we use 'Rp->MountPointReparseBuffer.PrintNameLength'? */
+ if (i_size <= offsetof(struct REPARSE_DATA_BUFFER,
+ MountPointReparseBuffer.PathBuffer))
+ goto out;
+ uni = Add2Ptr(rp,
+ offsetof(struct REPARSE_DATA_BUFFER,
+ MountPointReparseBuffer.PathBuffer) +
+ le16_to_cpu(rp->MountPointReparseBuffer
+ .PrintNameOffset) -
+ 2);
+ nlen = le16_to_cpu(rp->MountPointReparseBuffer.PrintNameLength);
+ break;
+
+ case IO_REPARSE_TAG_SYMLINK:
+ /* FolderSymbolicLink */
+ /* Can we use 'Rp->SymbolicLinkReparseBuffer.PrintNameLength'? */
+ if (i_size <= offsetof(struct REPARSE_DATA_BUFFER,
+ SymbolicLinkReparseBuffer.PathBuffer))
+ goto out;
+ uni = Add2Ptr(rp,
+ offsetof(struct REPARSE_DATA_BUFFER,
+ SymbolicLinkReparseBuffer.PathBuffer) +
+ le16_to_cpu(rp->SymbolicLinkReparseBuffer
+ .PrintNameOffset) -
+ 2);
+ nlen = le16_to_cpu(
+ rp->SymbolicLinkReparseBuffer.PrintNameLength);
+ break;
+
+ case IO_REPARSE_TAG_CLOUD:
+ case IO_REPARSE_TAG_CLOUD_1:
+ case IO_REPARSE_TAG_CLOUD_2:
+ case IO_REPARSE_TAG_CLOUD_3:
+ case IO_REPARSE_TAG_CLOUD_4:
+ case IO_REPARSE_TAG_CLOUD_5:
+ case IO_REPARSE_TAG_CLOUD_6:
+ case IO_REPARSE_TAG_CLOUD_7:
+ case IO_REPARSE_TAG_CLOUD_8:
+ case IO_REPARSE_TAG_CLOUD_9:
+ case IO_REPARSE_TAG_CLOUD_A:
+ case IO_REPARSE_TAG_CLOUD_B:
+ case IO_REPARSE_TAG_CLOUD_C:
+ case IO_REPARSE_TAG_CLOUD_D:
+ case IO_REPARSE_TAG_CLOUD_E:
+ case IO_REPARSE_TAG_CLOUD_F:
+ err = sizeof("OneDrive") - 1;
+ if (err > buflen)
+ err = buflen;
+ memcpy(buffer, "OneDrive", err);
+ goto out;
+
+ default:
+ if (IsReparseTagMicrosoft(rp->ReparseTag)) {
+ /* unknown Microsoft Tag */
+ goto out;
+ }
+ if (!IsReparseTagNameSurrogate(rp->ReparseTag) ||
+ i_size <= sizeof(struct REPARSE_POINT)) {
+ goto out;
+ }
+
+ /* Users tag */
+ uni = Add2Ptr(rp, sizeof(struct REPARSE_POINT) - 2);
+ nlen = le16_to_cpu(rp->ReparseDataLength) -
+ sizeof(struct REPARSE_POINT);
+ }
+
+ /* Convert nlen from bytes to UNICODE chars */
+ nlen >>= 1;
+
+ /* Check that name is available */
+ if (!nlen || &uni->name[nlen] > (__le16 *)Add2Ptr(rp, i_size))
+ goto out;
+
+ /* If name is already zero terminated then truncate it now */
+ if (!uni->name[nlen - 1])
+ nlen -= 1;
+ uni->len = nlen;
+
+ err = ntfs_utf16_to_nls(sbi, uni, buffer, buflen);
+
+ if (err < 0)
+ goto out;
+
+ /* translate windows '\' into linux '/' */
+ for (i = 0; i < err; i++) {
+ if (buffer[i] == '\\')
+ buffer[i] = '/';
+ }
+
+ /* Always set last zero */
+ buffer[err] = 0;
+out:
+ ntfs_free(to_free);
+ return err;
+}
+
+static const char *ntfs_get_link(struct dentry *de, struct inode *inode,
+ struct delayed_call *done)
+{
+ int err;
+ char *ret;
+
+ if (!de)
+ return ERR_PTR(-ECHILD);
+
+ ret = kmalloc(PAGE_SIZE, GFP_NOFS);
+ if (!ret)
+ return ERR_PTR(-ENOMEM);
+
+ err = ntfs_readlink_hlp(inode, ret, PAGE_SIZE);
+ if (err < 0) {
+ kfree(ret);
+ return ERR_PTR(err);
+ }
+
+ set_delayed_call(done, kfree_link, ret);
+
+ return ret;
+}
+
+// clang-format off
+const struct inode_operations ntfs_link_inode_operations = {
+ .get_link = ntfs_get_link,
+ .setattr = ntfs3_setattr,
+ .listxattr = ntfs_listxattr,
+ .permission = ntfs_permission,
+ .get_acl = ntfs_get_acl,
+ .set_acl = ntfs_set_acl,
+};
+
+const struct address_space_operations ntfs_aops = {
+ .readpage = ntfs_readpage,
+ .readahead = ntfs_readahead,
+ .writepage = ntfs_writepage,
+ .writepages = ntfs_writepages,
+ .write_begin = ntfs_write_begin,
+ .write_end = ntfs_write_end,
+ .direct_IO = ntfs_direct_IO,
+ .bmap = ntfs_bmap,
+ .set_page_dirty = __set_page_dirty_buffers,
+};
+
+const struct address_space_operations ntfs_aops_cmpr = {
+ .readpage = ntfs_readpage,
+ .readahead = ntfs_readahead,
+};
+// clang-format on
diff --git a/fs/ntfs3/super.c b/fs/ntfs3/super.c
new file mode 100644
index 000000000000..6be13e256c1a
--- /dev/null
+++ b/fs/ntfs3/super.c
@@ -0,0 +1,1504 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ *
+ * Copyright (C) 2019-2021 Paragon Software GmbH, All rights reserved.
+ *
+ *
+ * terminology
+ *
+ * cluster - allocation unit - 512,1K,2K,4K,...,2M
+ * vcn - virtual cluster number - offset inside the file in clusters
+ * vbo - virtual byte offset - offset inside the file in bytes
+ * lcn - logical cluster number - 0 based cluster in clusters heap
+ * lbo - logical byte offset - absolute position inside volume
+ * run - maps vcn to lcn - stored in attributes in packed form
+ * attr - attribute segment - std/name/data etc records inside MFT
+ * mi - mft inode - one MFT record(usually 1024 bytes or 4K), consists of attributes
+ * ni - ntfs inode - extends linux inode. consists of one or more mft inodes
+ * index - unit inside directory - 2K, 4K, <=page size, does not depend on cluster size
+ *
+ * WSL - Windows Subsystem for Linux
+ * https://docs.microsoft.com/en-us/windows/wsl/file-permissions
+ * It stores uid/gid/mode/dev in xattr
+ *
+ */
+
+#include <linux/backing-dev.h>
+#include <linux/blkdev.h>
+#include <linux/buffer_head.h>
+#include <linux/exportfs.h>
+#include <linux/fs.h>
+#include <linux/iversion.h>
+#include <linux/module.h>
+#include <linux/nls.h>
+#include <linux/parser.h>
+#include <linux/seq_file.h>
+#include <linux/statfs.h>
+
+#include "debug.h"
+#include "ntfs.h"
+#include "ntfs_fs.h"
+#ifdef CONFIG_NTFS3_LZX_XPRESS
+#include "lib/lib.h"
+#endif
+
+#ifdef CONFIG_PRINTK
+/*
+ * Trace warnings/notices/errors
+ * Thanks Joe Perches <joe(a)perches.com> for implementation
+ */
+void ntfs_printk(const struct super_block *sb, const char *fmt, ...)
+{
+ struct va_format vaf;
+ va_list args;
+ int level;
+ struct ntfs_sb_info *sbi = sb->s_fs_info;
+
+ /*should we use different ratelimits for warnings/notices/errors? */
+ if (!___ratelimit(&sbi->msg_ratelimit, "ntfs3"))
+ return;
+
+ va_start(args, fmt);
+
+ level = printk_get_level(fmt);
+ vaf.fmt = printk_skip_level(fmt);
+ vaf.va = &args;
+ printk("%c%cntfs3: %s: %pV\n", KERN_SOH_ASCII, level, sb->s_id, &vaf);
+
+ va_end(args);
+}
+
+static char s_name_buf[512];
+static atomic_t s_name_buf_cnt = ATOMIC_INIT(1); // 1 means 'free s_name_buf'
+
+/* print warnings/notices/errors about inode using name or inode number */
+void ntfs_inode_printk(struct inode *inode, const char *fmt, ...)
+{
+ struct super_block *sb = inode->i_sb;
+ struct ntfs_sb_info *sbi = sb->s_fs_info;
+ char *name;
+ va_list args;
+ struct va_format vaf;
+ int level;
+
+ if (!___ratelimit(&sbi->msg_ratelimit, "ntfs3"))
+ return;
+
+ /* use static allocated buffer, if possible */
+ name = atomic_dec_and_test(&s_name_buf_cnt)
+ ? s_name_buf
+ : kmalloc(sizeof(s_name_buf), GFP_NOFS);
+
+ if (name) {
+ struct dentry *de = d_find_alias(inode);
+ const u32 name_len = ARRAY_SIZE(s_name_buf) - 1;
+
+ if (de) {
+ spin_lock(&de->d_lock);
+ snprintf(name, name_len, " \"%s\"", de->d_name.name);
+ spin_unlock(&de->d_lock);
+ name[name_len] = 0; /* to be sure*/
+ } else {
+ name[0] = 0;
+ }
+ dput(de); /* cocci warns if placed in branch "if (de)" */
+ }
+
+ va_start(args, fmt);
+
+ level = printk_get_level(fmt);
+ vaf.fmt = printk_skip_level(fmt);
+ vaf.va = &args;
+
+ printk("%c%cntfs3: %s: ino=%lx,%s %pV\n", KERN_SOH_ASCII, level,
+ sb->s_id, inode->i_ino, name ? name : "", &vaf);
+
+ va_end(args);
+
+ atomic_inc(&s_name_buf_cnt);
+ if (name != s_name_buf)
+ kfree(name);
+}
+#endif
+
+/*
+ * Shared memory struct.
+ *
+ * on-disk ntfs's upcase table is created by ntfs formater
+ * 'upcase' table is 128K bytes of memory
+ * we should read it into memory when mounting
+ * Several ntfs volumes likely use the same 'upcase' table
+ * It is good idea to share in-memory 'upcase' table between different volumes
+ * Unfortunately winxp/vista/win7 use different upcase tables
+ */
+static DEFINE_SPINLOCK(s_shared_lock);
+
+static struct {
+ void *ptr;
+ u32 len;
+ int cnt;
+} s_shared[8];
+
+/*
+ * ntfs_set_shared
+ *
+ * Returns 'ptr' if pointer was saved in shared memory
+ * Returns NULL if pointer was not shared
+ */
+void *ntfs_set_shared(void *ptr, u32 bytes)
+{
+ void *ret = NULL;
+ int i, j = -1;
+
+ spin_lock(&s_shared_lock);
+ for (i = 0; i < ARRAY_SIZE(s_shared); i++) {
+ if (!s_shared[i].cnt) {
+ j = i;
+ } else if (bytes == s_shared[i].len &&
+ !memcmp(s_shared[i].ptr, ptr, bytes)) {
+ s_shared[i].cnt += 1;
+ ret = s_shared[i].ptr;
+ break;
+ }
+ }
+
+ if (!ret && j != -1) {
+ s_shared[j].ptr = ptr;
+ s_shared[j].len = bytes;
+ s_shared[j].cnt = 1;
+ ret = ptr;
+ }
+ spin_unlock(&s_shared_lock);
+
+ return ret;
+}
+
+/*
+ * ntfs_put_shared
+ *
+ * Returns 'ptr' if pointer is not shared anymore
+ * Returns NULL if pointer is still shared
+ */
+void *ntfs_put_shared(void *ptr)
+{
+ void *ret = ptr;
+ int i;
+
+ spin_lock(&s_shared_lock);
+ for (i = 0; i < ARRAY_SIZE(s_shared); i++) {
+ if (s_shared[i].cnt && s_shared[i].ptr == ptr) {
+ if (--s_shared[i].cnt)
+ ret = NULL;
+ break;
+ }
+ }
+ spin_unlock(&s_shared_lock);
+
+ return ret;
+}
+
+static inline void clear_mount_options(struct ntfs_mount_options *options)
+{
+ unload_nls(options->nls);
+}
+
+enum Opt {
+ Opt_uid,
+ Opt_gid,
+ Opt_umask,
+ Opt_dmask,
+ Opt_fmask,
+ Opt_immutable,
+ Opt_discard,
+ Opt_force,
+ Opt_sparse,
+ Opt_nohidden,
+ Opt_showmeta,
+ Opt_acl,
+ Opt_noatime,
+ Opt_nls,
+ Opt_prealloc,
+ Opt_no_acs_rules,
+ Opt_err,
+};
+
+static const match_table_t ntfs_tokens = {
+ { Opt_uid, "uid=%u" },
+ { Opt_gid, "gid=%u" },
+ { Opt_umask, "umask=%o" },
+ { Opt_dmask, "dmask=%o" },
+ { Opt_fmask, "fmask=%o" },
+ { Opt_immutable, "sys_immutable" },
+ { Opt_discard, "discard" },
+ { Opt_force, "force" },
+ { Opt_sparse, "sparse" },
+ { Opt_nohidden, "nohidden" },
+ { Opt_acl, "acl" },
+ { Opt_noatime, "noatime" },
+ { Opt_showmeta, "showmeta" },
+ { Opt_nls, "nls=%s" },
+ { Opt_prealloc, "prealloc" },
+ { Opt_no_acs_rules, "no_acs_rules" },
+ { Opt_err, NULL },
+};
+
+static noinline int ntfs_parse_options(struct super_block *sb, char *options,
+ int silent,
+ struct ntfs_mount_options *opts)
+{
+ char *p;
+ substring_t args[MAX_OPT_ARGS];
+ int option;
+ char nls_name[30];
+ struct nls_table *nls;
+
+ opts->fs_uid = current_uid();
+ opts->fs_gid = current_gid();
+ opts->fs_fmask_inv = opts->fs_dmask_inv = ~current_umask();
+ nls_name[0] = 0;
+
+ if (!options)
+ goto out;
+
+ while ((p = strsep(&options, ","))) {
+ int token;
+
+ if (!*p)
+ continue;
+
+ token = match_token(p, ntfs_tokens, args);
+ switch (token) {
+ case Opt_immutable:
+ opts->sys_immutable = 1;
+ break;
+ case Opt_uid:
+ if (match_int(&args[0], &option))
+ return -EINVAL;
+ opts->fs_uid = make_kuid(current_user_ns(), option);
+ if (!uid_valid(opts->fs_uid))
+ return -EINVAL;
+ opts->uid = 1;
+ break;
+ case Opt_gid:
+ if (match_int(&args[0], &option))
+ return -EINVAL;
+ opts->fs_gid = make_kgid(current_user_ns(), option);
+ if (!gid_valid(opts->fs_gid))
+ return -EINVAL;
+ opts->gid = 1;
+ break;
+ case Opt_umask:
+ if (match_octal(&args[0], &option))
+ return -EINVAL;
+ opts->fs_fmask_inv = opts->fs_dmask_inv = ~option;
+ opts->fmask = opts->dmask = 1;
+ break;
+ case Opt_dmask:
+ if (match_octal(&args[0], &option))
+ return -EINVAL;
+ opts->fs_dmask_inv = ~option;
+ opts->dmask = 1;
+ break;
+ case Opt_fmask:
+ if (match_octal(&args[0], &option))
+ return -EINVAL;
+ opts->fs_fmask_inv = ~option;
+ opts->fmask = 1;
+ break;
+ case Opt_discard:
+ opts->discard = 1;
+ break;
+ case Opt_force:
+ opts->force = 1;
+ break;
+ case Opt_sparse:
+ opts->sparse = 1;
+ break;
+ case Opt_nohidden:
+ opts->nohidden = 1;
+ break;
+ case Opt_acl:
+#ifdef CONFIG_NTFS3_FS_POSIX_ACL
+ sb->s_flags |= SB_POSIXACL;
+ break;
+#else
+ ntfs_err(sb, "support for ACL not compiled in!");
+ return -EINVAL;
+#endif
+ case Opt_noatime:
+ sb->s_flags |= SB_NOATIME;
+ break;
+ case Opt_showmeta:
+ opts->showmeta = 1;
+ break;
+ case Opt_nls:
+ match_strlcpy(nls_name, &args[0], sizeof(nls_name));
+ break;
+ case Opt_prealloc:
+ opts->prealloc = 1;
+ break;
+ case Opt_no_acs_rules:
+ opts->no_acs_rules = 1;
+ break;
+ default:
+ if (!silent)
+ ntfs_err(
+ sb,
+ "Unrecognized mount option \"%s\" or missing value",
+ p);
+ //return -EINVAL;
+ }
+ }
+
+out:
+ if (!strcmp(nls_name[0] ? nls_name : CONFIG_NLS_DEFAULT, "utf8")) {
+ /* For UTF-8 use utf16s_to_utf8s/utf8s_to_utf16s instead of nls */
+ nls = NULL;
+ } else if (nls_name[0]) {
+ nls = load_nls(nls_name);
+ if (!nls) {
+ ntfs_err(sb, "failed to load \"%s\"", nls_name);
+ return -EINVAL;
+ }
+ } else {
+ nls = load_nls_default();
+ if (!nls) {
+ ntfs_err(sb, "failed to load default nls");
+ return -EINVAL;
+ }
+ }
+ opts->nls = nls;
+
+ return 0;
+}
+
+static int ntfs_remount(struct super_block *sb, int *flags, char *data)
+{
+ int err, ro_rw;
+ struct ntfs_sb_info *sbi = sb->s_fs_info;
+ struct ntfs_mount_options old_opts;
+ char *orig_data = kstrdup(data, GFP_KERNEL);
+
+ if (data && !orig_data)
+ return -ENOMEM;
+
+ /* Store original options */
+ memcpy(&old_opts, &sbi->options, sizeof(old_opts));
+ clear_mount_options(&sbi->options);
+ memset(&sbi->options, 0, sizeof(sbi->options));
+
+ err = ntfs_parse_options(sb, data, 0, &sbi->options);
+ if (err)
+ goto restore_opts;
+
+ ro_rw = sb_rdonly(sb) && !(*flags & SB_RDONLY);
+ if (ro_rw && (sbi->flags & NTFS_FLAGS_NEED_REPLAY)) {
+ ntfs_warn(
+ sb,
+ "Couldn't remount rw because journal is not replayed. Please umount/remount instead\n");
+ err = -EINVAL;
+ goto restore_opts;
+ }
+
+ sync_filesystem(sb);
+
+ if (ro_rw && (sbi->volume.flags & VOLUME_FLAG_DIRTY) &&
+ !sbi->options.force) {
+ ntfs_warn(sb, "volume is dirty and \"force\" flag is not set!");
+ err = -EINVAL;
+ goto restore_opts;
+ }
+
+ clear_mount_options(&old_opts);
+
+ *flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME) |
+ SB_NODIRATIME | SB_NOATIME;
+ ntfs_info(sb, "re-mounted. Opts: %s", orig_data);
+ err = 0;
+ goto out;
+
+restore_opts:
+ clear_mount_options(&sbi->options);
+ memcpy(&sbi->options, &old_opts, sizeof(old_opts));
+
+out:
+ kfree(orig_data);
+ return err;
+}
+
+static struct kmem_cache *ntfs_inode_cachep;
+
+static struct inode *ntfs_alloc_inode(struct super_block *sb)
+{
+ struct ntfs_inode *ni = kmem_cache_alloc(ntfs_inode_cachep, GFP_NOFS);
+
+ if (!ni)
+ return NULL;
+
+ memset(ni, 0, offsetof(struct ntfs_inode, vfs_inode));
+
+ mutex_init(&ni->ni_lock);
+
+ return &ni->vfs_inode;
+}
+
+static void ntfs_i_callback(struct rcu_head *head)
+{
+ struct inode *inode = container_of(head, struct inode, i_rcu);
+ struct ntfs_inode *ni = ntfs_i(inode);
+
+ mutex_destroy(&ni->ni_lock);
+
+ kmem_cache_free(ntfs_inode_cachep, ni);
+}
+
+static void ntfs_destroy_inode(struct inode *inode)
+{
+ call_rcu(&inode->i_rcu, ntfs_i_callback);
+}
+
+static void init_once(void *foo)
+{
+ struct ntfs_inode *ni = foo;
+
+ inode_init_once(&ni->vfs_inode);
+}
+
+/* noinline to reduce binary size*/
+static noinline void put_ntfs(struct ntfs_sb_info *sbi)
+{
+ ntfs_free(sbi->new_rec);
+ ntfs_vfree(ntfs_put_shared(sbi->upcase));
+ ntfs_free(sbi->def_table);
+
+ wnd_close(&sbi->mft.bitmap);
+ wnd_close(&sbi->used.bitmap);
+
+ if (sbi->mft.ni)
+ iput(&sbi->mft.ni->vfs_inode);
+
+ if (sbi->security.ni)
+ iput(&sbi->security.ni->vfs_inode);
+
+ if (sbi->reparse.ni)
+ iput(&sbi->reparse.ni->vfs_inode);
+
+ if (sbi->objid.ni)
+ iput(&sbi->objid.ni->vfs_inode);
+
+ if (sbi->volume.ni)
+ iput(&sbi->volume.ni->vfs_inode);
+
+ ntfs_update_mftmirr(sbi, 0);
+
+ indx_clear(&sbi->security.index_sii);
+ indx_clear(&sbi->security.index_sdh);
+ indx_clear(&sbi->reparse.index_r);
+ indx_clear(&sbi->objid.index_o);
+ ntfs_free(sbi->compress.lznt);
+#ifdef CONFIG_NTFS3_LZX_XPRESS
+ xpress_free_decompressor(sbi->compress.xpress);
+ lzx_free_decompressor(sbi->compress.lzx);
+#endif
+ clear_mount_options(&sbi->options);
+
+ ntfs_free(sbi);
+}
+
+static void ntfs_put_super(struct super_block *sb)
+{
+ struct ntfs_sb_info *sbi = sb->s_fs_info;
+
+ /*mark rw ntfs as clear, if possible*/
+ ntfs_set_state(sbi, NTFS_DIRTY_CLEAR);
+
+ put_ntfs(sbi);
+
+ sync_blockdev(sb->s_bdev);
+}
+
+static int ntfs_statfs(struct dentry *dentry, struct kstatfs *buf)
+{
+ struct super_block *sb = dentry->d_sb;
+ struct ntfs_sb_info *sbi = sb->s_fs_info;
+ struct wnd_bitmap *wnd = &sbi->used.bitmap;
+
+ buf->f_type = sb->s_magic;
+ buf->f_bsize = sbi->cluster_size;
+ buf->f_blocks = wnd->nbits;
+
+ buf->f_bfree = buf->f_bavail = wnd_zeroes(wnd);
+ buf->f_fsid.val[0] = sbi->volume.ser_num;
+ buf->f_fsid.val[1] = (sbi->volume.ser_num >> 32);
+ buf->f_namelen = NTFS_NAME_LEN;
+
+ return 0;
+}
+
+static int ntfs_show_options(struct seq_file *m, struct dentry *root)
+{
+ struct super_block *sb = root->d_sb;
+ struct ntfs_sb_info *sbi = sb->s_fs_info;
+ struct ntfs_mount_options *opts = &sbi->options;
+ struct user_namespace *user_ns = seq_user_ns(m);
+
+ if (opts->uid)
+ seq_printf(m, ",uid=%u",
+ from_kuid_munged(user_ns, opts->fs_uid));
+ if (opts->gid)
+ seq_printf(m, ",gid=%u",
+ from_kgid_munged(user_ns, opts->fs_gid));
+ if (opts->fmask)
+ seq_printf(m, ",fmask=%04o", ~opts->fs_fmask_inv);
+ if (opts->dmask)
+ seq_printf(m, ",dmask=%04o", ~opts->fs_dmask_inv);
+ if (opts->nls)
+ seq_printf(m, ",nls=%s", opts->nls->charset);
+ else
+ seq_puts(m, ",nls=utf8");
+ if (opts->sys_immutable)
+ seq_puts(m, ",sys_immutable");
+ if (opts->discard)
+ seq_puts(m, ",discard");
+ if (opts->sparse)
+ seq_puts(m, ",sparse");
+ if (opts->showmeta)
+ seq_puts(m, ",showmeta");
+ if (opts->nohidden)
+ seq_puts(m, ",nohidden");
+ if (opts->force)
+ seq_puts(m, ",force");
+ if (opts->no_acs_rules)
+ seq_puts(m, ",no_acs_rules");
+ if (opts->prealloc)
+ seq_puts(m, ",prealloc");
+ if (sb->s_flags & SB_POSIXACL)
+ seq_puts(m, ",acl");
+ if (sb->s_flags & SB_NOATIME)
+ seq_puts(m, ",noatime");
+
+ return 0;
+}
+
+/*super_operations::sync_fs*/
+static int ntfs_sync_fs(struct super_block *sb, int wait)
+{
+ int err = 0, err2;
+ struct ntfs_sb_info *sbi = sb->s_fs_info;
+ struct ntfs_inode *ni;
+ struct inode *inode;
+
+ ni = sbi->security.ni;
+ if (ni) {
+ inode = &ni->vfs_inode;
+ err2 = _ni_write_inode(inode, wait);
+ if (err2 && !err)
+ err = err2;
+ }
+
+ ni = sbi->objid.ni;
+ if (ni) {
+ inode = &ni->vfs_inode;
+ err2 = _ni_write_inode(inode, wait);
+ if (err2 && !err)
+ err = err2;
+ }
+
+ ni = sbi->reparse.ni;
+ if (ni) {
+ inode = &ni->vfs_inode;
+ err2 = _ni_write_inode(inode, wait);
+ if (err2 && !err)
+ err = err2;
+ }
+
+ if (!err)
+ ntfs_set_state(sbi, NTFS_DIRTY_CLEAR);
+
+ ntfs_update_mftmirr(sbi, wait);
+
+ return err;
+}
+
+static const struct super_operations ntfs_sops = {
+ .alloc_inode = ntfs_alloc_inode,
+ .destroy_inode = ntfs_destroy_inode,
+ .evict_inode = ntfs_evict_inode,
+ .put_super = ntfs_put_super,
+ .statfs = ntfs_statfs,
+ .show_options = ntfs_show_options,
+ .sync_fs = ntfs_sync_fs,
+ .remount_fs = ntfs_remount,
+ .write_inode = ntfs3_write_inode,
+};
+
+static struct inode *ntfs_export_get_inode(struct super_block *sb, u64 ino,
+ u32 generation)
+{
+ struct MFT_REF ref;
+ struct inode *inode;
+
+ ref.low = cpu_to_le32(ino);
+#ifdef CONFIG_NTFS3_64BIT_CLUSTER
+ ref.high = cpu_to_le16(ino >> 32);
+#else
+ ref.high = 0;
+#endif
+ ref.seq = cpu_to_le16(generation);
+
+ inode = ntfs_iget5(sb, &ref, NULL);
+ if (!IS_ERR(inode) && is_bad_inode(inode)) {
+ iput(inode);
+ inode = ERR_PTR(-ESTALE);
+ }
+
+ return inode;
+}
+
+static struct dentry *ntfs_fh_to_dentry(struct super_block *sb, struct fid *fid,
+ int fh_len, int fh_type)
+{
+ return generic_fh_to_dentry(sb, fid, fh_len, fh_type,
+ ntfs_export_get_inode);
+}
+
+static struct dentry *ntfs_fh_to_parent(struct super_block *sb, struct fid *fid,
+ int fh_len, int fh_type)
+{
+ return generic_fh_to_parent(sb, fid, fh_len, fh_type,
+ ntfs_export_get_inode);
+}
+
+/* TODO: == ntfs_sync_inode */
+static int ntfs_nfs_commit_metadata(struct inode *inode)
+{
+ return _ni_write_inode(inode, 1);
+}
+
+static const struct export_operations ntfs_export_ops = {
+ .fh_to_dentry = ntfs_fh_to_dentry,
+ .fh_to_parent = ntfs_fh_to_parent,
+ .get_parent = ntfs3_get_parent,
+ .commit_metadata = ntfs_nfs_commit_metadata,
+};
+
+/* Returns Gb,Mb to print with "%u.%02u Gb" */
+static u32 format_size_gb(const u64 bytes, u32 *mb)
+{
+ /* Do simple right 30 bit shift of 64 bit value */
+ u64 kbytes = bytes >> 10;
+ u32 kbytes32 = kbytes;
+
+ *mb = (100 * (kbytes32 & 0xfffff) + 0x7ffff) >> 20;
+ if (*mb >= 100)
+ *mb = 99;
+
+ return (kbytes32 >> 20) | (((u32)(kbytes >> 32)) << 12);
+}
+
+static u32 true_sectors_per_clst(const struct NTFS_BOOT *boot)
+{
+ return boot->sectors_per_clusters <= 0x80
+ ? boot->sectors_per_clusters
+ : (1u << (0 - boot->sectors_per_clusters));
+}
+
+/* inits internal info from on-disk boot sector*/
+static int ntfs_init_from_boot(struct super_block *sb, u32 sector_size,
+ u64 dev_size)
+{
+ struct ntfs_sb_info *sbi = sb->s_fs_info;
+ int err;
+ u32 mb, gb, boot_sector_size, sct_per_clst, record_size;
+ u64 sectors, clusters, fs_size, mlcn, mlcn2;
+ struct NTFS_BOOT *boot;
+ struct buffer_head *bh;
+ struct MFT_REC *rec;
+ u16 fn, ao;
+
+ sbi->volume.blocks = dev_size >> PAGE_SHIFT;
+
+ bh = ntfs_bread(sb, 0);
+ if (!bh)
+ return -EIO;
+
+ err = -EINVAL;
+ boot = (struct NTFS_BOOT *)bh->b_data;
+
+ if (memcmp(boot->system_id, "NTFS ", sizeof("NTFS ") - 1))
+ goto out;
+
+ /* 0x55AA is not mandaroty. Thanks Maxim Suhanov*/
+ /*if (0x55 != boot->boot_magic[0] || 0xAA != boot->boot_magic[1])
+ * goto out;
+ */
+
+ boot_sector_size = (u32)boot->bytes_per_sector[1] << 8;
+ if (boot->bytes_per_sector[0] || boot_sector_size < SECTOR_SIZE ||
+ !is_power_of2(boot_sector_size)) {
+ goto out;
+ }
+
+ /* cluster size: 512, 1K, 2K, 4K, ... 2M */
+ sct_per_clst = true_sectors_per_clst(boot);
+ if (!is_power_of2(sct_per_clst))
+ goto out;
+
+ mlcn = le64_to_cpu(boot->mft_clst);
+ mlcn2 = le64_to_cpu(boot->mft2_clst);
+ sectors = le64_to_cpu(boot->sectors_per_volume);
+
+ if (mlcn * sct_per_clst >= sectors)
+ goto out;
+
+ if (mlcn2 * sct_per_clst >= sectors)
+ goto out;
+
+ /* Check MFT record size */
+ if ((boot->record_size < 0 &&
+ SECTOR_SIZE > (2U << (-boot->record_size))) ||
+ (boot->record_size >= 0 && !is_power_of2(boot->record_size))) {
+ goto out;
+ }
+
+ /* Check index record size */
+ if ((boot->index_size < 0 &&
+ SECTOR_SIZE > (2U << (-boot->index_size))) ||
+ (boot->index_size >= 0 && !is_power_of2(boot->index_size))) {
+ goto out;
+ }
+
+ sbi->sector_size = boot_sector_size;
+ sbi->sector_bits = blksize_bits(boot_sector_size);
+ fs_size = (sectors + 1) << sbi->sector_bits;
+
+ gb = format_size_gb(fs_size, &mb);
+
+ /*
+ * - Volume formatted and mounted with the same sector size
+ * - Volume formatted 4K and mounted as 512
+ * - Volume formatted 512 and mounted as 4K
+ */
+ if (sbi->sector_size != sector_size) {
+ ntfs_warn(sb,
+ "Different NTFS' sector size and media sector size");
+ dev_size += sector_size - 1;
+ }
+
+ sbi->cluster_size = boot_sector_size * sct_per_clst;
+ sbi->cluster_bits = blksize_bits(sbi->cluster_size);
+
+ sbi->mft.lbo = mlcn << sbi->cluster_bits;
+ sbi->mft.lbo2 = mlcn2 << sbi->cluster_bits;
+
+ if (sbi->cluster_size < sbi->sector_size)
+ goto out;
+
+ sbi->cluster_mask = sbi->cluster_size - 1;
+ sbi->cluster_mask_inv = ~(u64)sbi->cluster_mask;
+ sbi->record_size = record_size = boot->record_size < 0
+ ? 1 << (-boot->record_size)
+ : (u32)boot->record_size
+ << sbi->cluster_bits;
+
+ if (record_size > MAXIMUM_BYTES_PER_MFT)
+ goto out;
+
+ sbi->record_bits = blksize_bits(record_size);
+ sbi->attr_size_tr = (5 * record_size >> 4); // ~320 bytes
+
+ sbi->max_bytes_per_attr =
+ record_size - QuadAlign(MFTRECORD_FIXUP_OFFSET_1) -
+ QuadAlign(((record_size >> SECTOR_SHIFT) * sizeof(short))) -
+ QuadAlign(sizeof(enum ATTR_TYPE));
+
+ sbi->index_size = boot->index_size < 0
+ ? 1u << (-boot->index_size)
+ : (u32)boot->index_size << sbi->cluster_bits;
+
+ sbi->volume.ser_num = le64_to_cpu(boot->serial_num);
+ sbi->volume.size = sectors << sbi->sector_bits;
+
+ /* warning if RAW volume */
+ if (dev_size < fs_size) {
+ u32 mb0, gb0;
+
+ gb0 = format_size_gb(dev_size, &mb0);
+ ntfs_warn(
+ sb,
+ "RAW NTFS volume: Filesystem size %u.%02u Gb > volume size %u.%02u Gb. Mount in read-only",
+ gb, mb, gb0, mb0);
+ sb->s_flags |= SB_RDONLY;
+ }
+
+ clusters = sbi->volume.size >> sbi->cluster_bits;
+#ifndef CONFIG_NTFS3_64BIT_CLUSTER
+ /* 32 bits per cluster */
+ if (clusters >> 32) {
+ ntfs_notice(
+ sb,
+ "NTFS %u.%02u Gb is too big to use 32 bits per cluster",
+ gb, mb);
+ goto out;
+ }
+#elif BITS_PER_LONG < 64
+#error "CONFIG_NTFS3_64BIT_CLUSTER incompatible in 32 bit OS"
+#endif
+
+ sbi->used.bitmap.nbits = clusters;
+
+ rec = ntfs_zalloc(record_size);
+ if (!rec) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ sbi->new_rec = rec;
+ rec->rhdr.sign = NTFS_FILE_SIGNATURE;
+ rec->rhdr.fix_off = cpu_to_le16(MFTRECORD_FIXUP_OFFSET_1);
+ fn = (sbi->record_size >> SECTOR_SHIFT) + 1;
+ rec->rhdr.fix_num = cpu_to_le16(fn);
+ ao = QuadAlign(MFTRECORD_FIXUP_OFFSET_1 + sizeof(short) * fn);
+ rec->attr_off = cpu_to_le16(ao);
+ rec->used = cpu_to_le32(ao + QuadAlign(sizeof(enum ATTR_TYPE)));
+ rec->total = cpu_to_le32(sbi->record_size);
+ ((struct ATTRIB *)Add2Ptr(rec, ao))->type = ATTR_END;
+
+ if (sbi->cluster_size < PAGE_SIZE)
+ sb_set_blocksize(sb, sbi->cluster_size);
+
+ sbi->block_mask = sb->s_blocksize - 1;
+ sbi->blocks_per_cluster = sbi->cluster_size >> sb->s_blocksize_bits;
+ sbi->volume.blocks = sbi->volume.size >> sb->s_blocksize_bits;
+
+ /* Maximum size for normal files */
+ sbi->maxbytes = (clusters << sbi->cluster_bits) - 1;
+
+#ifdef CONFIG_NTFS3_64BIT_CLUSTER
+ if (clusters >= (1ull << (64 - sbi->cluster_bits)))
+ sbi->maxbytes = -1;
+ sbi->maxbytes_sparse = -1;
+#else
+ /* Maximum size for sparse file */
+ sbi->maxbytes_sparse = (1ull << (sbi->cluster_bits + 32)) - 1;
+#endif
+
+ err = 0;
+
+out:
+ brelse(bh);
+
+ return err;
+}
+
+/* try to mount*/
+static int ntfs_fill_super(struct super_block *sb, void *data, int silent)
+{
+ int err;
+ struct ntfs_sb_info *sbi;
+ struct block_device *bdev = sb->s_bdev;
+ struct inode *bd_inode = bdev->bd_inode;
+ struct request_queue *rq = bdev_get_queue(bdev);
+ struct inode *inode = NULL;
+ struct ntfs_inode *ni;
+ size_t i, tt;
+ CLST vcn, lcn, len;
+ struct ATTRIB *attr;
+ const struct VOLUME_INFO *info;
+ u32 idx, done, bytes;
+ struct ATTR_DEF_ENTRY *t;
+ u16 *upcase = NULL;
+ u16 *shared;
+ bool is_ro;
+ struct MFT_REF ref;
+
+ ref.high = 0;
+
+ sbi = ntfs_zalloc(sizeof(struct ntfs_sb_info));
+ if (!sbi)
+ return -ENOMEM;
+
+ sb->s_fs_info = sbi;
+ sbi->sb = sb;
+ sb->s_flags |= SB_NODIRATIME;
+ sb->s_magic = 0x7366746e; // "ntfs"
+ sb->s_op = &ntfs_sops;
+ sb->s_export_op = &ntfs_export_ops;
+ sb->s_time_gran = NTFS_TIME_GRAN; // 100 nsec
+ sb->s_xattr = ntfs_xattr_handlers;
+
+ ratelimit_state_init(&sbi->msg_ratelimit, DEFAULT_RATELIMIT_INTERVAL,
+ DEFAULT_RATELIMIT_BURST);
+
+ err = ntfs_parse_options(sb, data, silent, &sbi->options);
+ if (err)
+ goto out;
+
+ if (!rq || !blk_queue_discard(rq) || !rq->limits.discard_granularity) {
+ ;
+ } else {
+ sbi->discard_granularity = rq->limits.discard_granularity;
+ sbi->discard_granularity_mask_inv =
+ ~(u64)(sbi->discard_granularity - 1);
+ }
+
+ sb_set_blocksize(sb, PAGE_SIZE);
+
+ /* parse boot */
+ err = ntfs_init_from_boot(sb, rq ? queue_logical_block_size(rq) : 512,
+ bd_inode->i_size);
+ if (err)
+ goto out;
+
+#ifdef CONFIG_NTFS3_64BIT_CLUSTER
+ sb->s_maxbytes = MAX_LFS_FILESIZE;
+#else
+ sb->s_maxbytes = 0xFFFFFFFFull << sbi->cluster_bits;
+#endif
+
+ mutex_init(&sbi->compress.mtx_lznt);
+#ifdef CONFIG_NTFS3_LZX_XPRESS
+ mutex_init(&sbi->compress.mtx_xpress);
+ mutex_init(&sbi->compress.mtx_lzx);
+#endif
+
+ /*
+ * Load $Volume. This should be done before LogFile
+ * 'cause 'sbi->volume.ni' is used 'ntfs_set_state'
+ */
+ ref.low = cpu_to_le32(MFT_REC_VOL);
+ ref.seq = cpu_to_le16(MFT_REC_VOL);
+ inode = ntfs_iget5(sb, &ref, &NAME_VOLUME);
+ if (IS_ERR(inode)) {
+ err = PTR_ERR(inode);
+ ntfs_err(sb, "Failed to load $Volume.");
+ inode = NULL;
+ goto out;
+ }
+
+ ni = ntfs_i(inode);
+
+ /* Load and save label (not necessary) */
+ attr = ni_find_attr(ni, NULL, NULL, ATTR_LABEL, NULL, 0, NULL, NULL);
+
+ if (!attr) {
+ /* It is ok if no ATTR_LABEL */
+ } else if (!attr->non_res && !is_attr_ext(attr)) {
+ /* $AttrDef allows labels to be up to 128 symbols */
+ err = utf16s_to_utf8s(resident_data(attr),
+ le32_to_cpu(attr->res.data_size) >> 1,
+ UTF16_LITTLE_ENDIAN, sbi->volume.label,
+ sizeof(sbi->volume.label));
+ if (err < 0)
+ sbi->volume.label[0] = 0;
+ } else {
+ /* should we break mounting here? */
+ //err = -EINVAL;
+ //goto out;
+ }
+
+ attr = ni_find_attr(ni, attr, NULL, ATTR_VOL_INFO, NULL, 0, NULL, NULL);
+ if (!attr || is_attr_ext(attr)) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ info = resident_data_ex(attr, SIZEOF_ATTRIBUTE_VOLUME_INFO);
+ if (!info) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ sbi->volume.major_ver = info->major_ver;
+ sbi->volume.minor_ver = info->minor_ver;
+ sbi->volume.flags = info->flags;
+
+ sbi->volume.ni = ni;
+ inode = NULL;
+
+ /* Load $MFTMirr to estimate recs_mirr */
+ ref.low = cpu_to_le32(MFT_REC_MIRR);
+ ref.seq = cpu_to_le16(MFT_REC_MIRR);
+ inode = ntfs_iget5(sb, &ref, &NAME_MIRROR);
+ if (IS_ERR(inode)) {
+ err = PTR_ERR(inode);
+ ntfs_err(sb, "Failed to load $MFTMirr.");
+ inode = NULL;
+ goto out;
+ }
+
+ sbi->mft.recs_mirr =
+ ntfs_up_cluster(sbi, inode->i_size) >> sbi->record_bits;
+
+ iput(inode);
+
+ /* Load LogFile to replay */
+ ref.low = cpu_to_le32(MFT_REC_LOG);
+ ref.seq = cpu_to_le16(MFT_REC_LOG);
+ inode = ntfs_iget5(sb, &ref, &NAME_LOGFILE);
+ if (IS_ERR(inode)) {
+ err = PTR_ERR(inode);
+ ntfs_err(sb, "Failed to load \x24LogFile.");
+ inode = NULL;
+ goto out;
+ }
+
+ ni = ntfs_i(inode);
+
+ err = ntfs_loadlog_and_replay(ni, sbi);
+ if (err)
+ goto out;
+
+ iput(inode);
+ inode = NULL;
+
+ is_ro = sb_rdonly(sbi->sb);
+
+ if (sbi->flags & NTFS_FLAGS_NEED_REPLAY) {
+ if (!is_ro) {
+ ntfs_warn(sb,
+ "failed to replay log file. Can't mount rw!");
+ err = -EINVAL;
+ goto out;
+ }
+ } else if (sbi->volume.flags & VOLUME_FLAG_DIRTY) {
+ if (!is_ro && !sbi->options.force) {
+ ntfs_warn(
+ sb,
+ "volume is dirty and \"force\" flag is not set!");
+ err = -EINVAL;
+ goto out;
+ }
+ }
+
+ /* Load $MFT */
+ ref.low = cpu_to_le32(MFT_REC_MFT);
+ ref.seq = cpu_to_le16(1);
+
+ inode = ntfs_iget5(sb, &ref, &NAME_MFT);
+ if (IS_ERR(inode)) {
+ err = PTR_ERR(inode);
+ ntfs_err(sb, "Failed to load $MFT.");
+ inode = NULL;
+ goto out;
+ }
+
+ ni = ntfs_i(inode);
+
+ sbi->mft.used = ni->i_valid >> sbi->record_bits;
+ tt = inode->i_size >> sbi->record_bits;
+ sbi->mft.next_free = MFT_REC_USER;
+
+ err = wnd_init(&sbi->mft.bitmap, sb, tt);
+ if (err)
+ goto out;
+
+ err = ni_load_all_mi(ni);
+ if (err)
+ goto out;
+
+ sbi->mft.ni = ni;
+
+ /* Load $BadClus */
+ ref.low = cpu_to_le32(MFT_REC_BADCLUST);
+ ref.seq = cpu_to_le16(MFT_REC_BADCLUST);
+ inode = ntfs_iget5(sb, &ref, &NAME_BADCLUS);
+ if (IS_ERR(inode)) {
+ err = PTR_ERR(inode);
+ ntfs_err(sb, "Failed to load $BadClus.");
+ inode = NULL;
+ goto out;
+ }
+
+ ni = ntfs_i(inode);
+
+ for (i = 0; run_get_entry(&ni->file.run, i, &vcn, &lcn, &len); i++) {
+ if (lcn == SPARSE_LCN)
+ continue;
+
+ if (!sbi->bad_clusters)
+ ntfs_notice(sb, "Volume contains bad blocks");
+
+ sbi->bad_clusters += len;
+ }
+
+ iput(inode);
+
+ /* Load $Bitmap */
+ ref.low = cpu_to_le32(MFT_REC_BITMAP);
+ ref.seq = cpu_to_le16(MFT_REC_BITMAP);
+ inode = ntfs_iget5(sb, &ref, &NAME_BITMAP);
+ if (IS_ERR(inode)) {
+ err = PTR_ERR(inode);
+ ntfs_err(sb, "Failed to load $Bitmap.");
+ inode = NULL;
+ goto out;
+ }
+
+ ni = ntfs_i(inode);
+
+#ifndef CONFIG_NTFS3_64BIT_CLUSTER
+ if (inode->i_size >> 32) {
+ err = -EINVAL;
+ goto out;
+ }
+#endif
+
+ /* Check bitmap boundary */
+ tt = sbi->used.bitmap.nbits;
+ if (inode->i_size < bitmap_size(tt)) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ /* Not necessary */
+ sbi->used.bitmap.set_tail = true;
+ err = wnd_init(&sbi->used.bitmap, sbi->sb, tt);
+ if (err)
+ goto out;
+
+ iput(inode);
+
+ /* Compute the mft zone */
+ err = ntfs_refresh_zone(sbi);
+ if (err)
+ goto out;
+
+ /* Load $AttrDef */
+ ref.low = cpu_to_le32(MFT_REC_ATTR);
+ ref.seq = cpu_to_le16(MFT_REC_ATTR);
+ inode = ntfs_iget5(sbi->sb, &ref, &NAME_ATTRDEF);
+ if (IS_ERR(inode)) {
+ err = PTR_ERR(inode);
+ ntfs_err(sb, "Failed to load $AttrDef -> %d", err);
+ inode = NULL;
+ goto out;
+ }
+
+ if (inode->i_size < sizeof(struct ATTR_DEF_ENTRY)) {
+ err = -EINVAL;
+ goto out;
+ }
+ bytes = inode->i_size;
+ sbi->def_table = t = ntfs_malloc(bytes);
+ if (!t) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ for (done = idx = 0; done < bytes; done += PAGE_SIZE, idx++) {
+ unsigned long tail = bytes - done;
+ struct page *page = ntfs_map_page(inode->i_mapping, idx);
+
+ if (IS_ERR(page)) {
+ err = PTR_ERR(page);
+ goto out;
+ }
+ memcpy(Add2Ptr(t, done), page_address(page),
+ min(PAGE_SIZE, tail));
+ ntfs_unmap_page(page);
+
+ if (!idx && ATTR_STD != t->type) {
+ err = -EINVAL;
+ goto out;
+ }
+ }
+
+ t += 1;
+ sbi->def_entries = 1;
+ done = sizeof(struct ATTR_DEF_ENTRY);
+ sbi->reparse.max_size = MAXIMUM_REPARSE_DATA_BUFFER_SIZE;
+ sbi->ea_max_size = 0x10000; /* default formater value */
+
+ while (done + sizeof(struct ATTR_DEF_ENTRY) <= bytes) {
+ u32 t32 = le32_to_cpu(t->type);
+ u64 sz = le64_to_cpu(t->max_sz);
+
+ if ((t32 & 0xF) || le32_to_cpu(t[-1].type) >= t32)
+ break;
+
+ if (t->type == ATTR_REPARSE)
+ sbi->reparse.max_size = sz;
+ else if (t->type == ATTR_EA)
+ sbi->ea_max_size = sz;
+
+ done += sizeof(struct ATTR_DEF_ENTRY);
+ t += 1;
+ sbi->def_entries += 1;
+ }
+ iput(inode);
+
+ /* Load $UpCase */
+ ref.low = cpu_to_le32(MFT_REC_UPCASE);
+ ref.seq = cpu_to_le16(MFT_REC_UPCASE);
+ inode = ntfs_iget5(sb, &ref, &NAME_UPCASE);
+ if (IS_ERR(inode)) {
+ err = PTR_ERR(inode);
+ ntfs_err(sb, "Failed to load \x24LogFile.");
+ inode = NULL;
+ goto out;
+ }
+
+ ni = ntfs_i(inode);
+
+ if (inode->i_size != 0x10000 * sizeof(short)) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ sbi->upcase = upcase = ntfs_vmalloc(0x10000 * sizeof(short));
+ if (!upcase) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ for (idx = 0; idx < (0x10000 * sizeof(short) >> PAGE_SHIFT); idx++) {
+ const __le16 *src;
+ u16 *dst = Add2Ptr(upcase, idx << PAGE_SHIFT);
+ struct page *page = ntfs_map_page(inode->i_mapping, idx);
+
+ if (IS_ERR(page)) {
+ err = PTR_ERR(page);
+ goto out;
+ }
+
+ src = page_address(page);
+
+#ifdef __BIG_ENDIAN
+ for (i = 0; i < PAGE_SIZE / sizeof(u16); i++)
+ *dst++ = le16_to_cpu(*src++);
+#else
+ memcpy(dst, src, PAGE_SIZE);
+#endif
+ ntfs_unmap_page(page);
+ }
+
+ shared = ntfs_set_shared(upcase, 0x10000 * sizeof(short));
+ if (shared && upcase != shared) {
+ sbi->upcase = shared;
+ ntfs_vfree(upcase);
+ }
+
+ iput(inode);
+ inode = NULL;
+
+ if (is_ntfs3(sbi)) {
+ /* Load $Secure */
+ err = ntfs_security_init(sbi);
+ if (err)
+ goto out;
+
+ /* Load $Extend */
+ err = ntfs_extend_init(sbi);
+ if (err)
+ goto load_root;
+
+ /* Load $Extend\$Reparse */
+ err = ntfs_reparse_init(sbi);
+ if (err)
+ goto load_root;
+
+ /* Load $Extend\$ObjId */
+ err = ntfs_objid_init(sbi);
+ if (err)
+ goto load_root;
+ }
+
+load_root:
+ /* Load root */
+ ref.low = cpu_to_le32(MFT_REC_ROOT);
+ ref.seq = cpu_to_le16(MFT_REC_ROOT);
+ inode = ntfs_iget5(sb, &ref, &NAME_ROOT);
+ if (IS_ERR(inode)) {
+ err = PTR_ERR(inode);
+ ntfs_err(sb, "Failed to load root.");
+ inode = NULL;
+ goto out;
+ }
+
+ ni = ntfs_i(inode);
+
+ sb->s_root = d_make_root(inode);
+
+ if (!sb->s_root) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ return 0;
+
+out:
+ iput(inode);
+
+ if (sb->s_root) {
+ d_drop(sb->s_root);
+ sb->s_root = NULL;
+ }
+
+ put_ntfs(sbi);
+
+ sb->s_fs_info = NULL;
+ return err;
+}
+
+void ntfs_unmap_meta(struct super_block *sb, CLST lcn, CLST len)
+{
+ struct ntfs_sb_info *sbi = sb->s_fs_info;
+ struct block_device *bdev = sb->s_bdev;
+ sector_t devblock = (u64)lcn * sbi->blocks_per_cluster;
+ unsigned long blocks = (u64)len * sbi->blocks_per_cluster;
+ unsigned long cnt = 0;
+ unsigned long limit = global_zone_page_state(NR_FREE_PAGES)
+ << (PAGE_SHIFT - sb->s_blocksize_bits);
+
+ if (limit >= 0x2000)
+ limit -= 0x1000;
+ else if (limit < 32)
+ limit = 32;
+ else
+ limit >>= 1;
+
+ while (blocks--) {
+ clean_bdev_aliases(bdev, devblock++, 1);
+ if (cnt++ >= limit) {
+ sync_blockdev(bdev);
+ cnt = 0;
+ }
+ }
+}
+
+/*
+ * ntfs_discard
+ *
+ * issue a discard request (trim for SSD)
+ */
+int ntfs_discard(struct ntfs_sb_info *sbi, CLST lcn, CLST len)
+{
+ int err;
+ u64 lbo, bytes, start, end;
+ struct super_block *sb;
+
+ if (sbi->used.next_free_lcn == lcn + len)
+ sbi->used.next_free_lcn = lcn;
+
+ if (sbi->flags & NTFS_FLAGS_NODISCARD)
+ return -EOPNOTSUPP;
+
+ if (!sbi->options.discard)
+ return -EOPNOTSUPP;
+
+ lbo = (u64)lcn << sbi->cluster_bits;
+ bytes = (u64)len << sbi->cluster_bits;
+
+ /* Align up 'start' on discard_granularity */
+ start = (lbo + sbi->discard_granularity - 1) &
+ sbi->discard_granularity_mask_inv;
+ /* Align down 'end' on discard_granularity */
+ end = (lbo + bytes) & sbi->discard_granularity_mask_inv;
+
+ sb = sbi->sb;
+ if (start >= end)
+ return 0;
+
+ err = blkdev_issue_discard(sb->s_bdev, start >> 9, (end - start) >> 9,
+ GFP_NOFS, 0);
+
+ if (err == -EOPNOTSUPP)
+ sbi->flags |= NTFS_FLAGS_NODISCARD;
+
+ return err;
+}
+
+static struct dentry *ntfs_mount(struct file_system_type *fs_type, int flags,
+ const char *dev_name, void *data)
+{
+ return mount_bdev(fs_type, flags, dev_name, data, ntfs_fill_super);
+}
+
+// clang-format off
+static struct file_system_type ntfs_fs_type = {
+ .owner = THIS_MODULE,
+ .name = "ntfs3",
+ .mount = ntfs_mount,
+ .kill_sb = kill_block_super,
+ .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP,
+};
+// clang-format on
+
+static int __init init_ntfs_fs(void)
+{
+ int err;
+
+ pr_notice("ntfs3: Index binary search\n");
+ pr_notice("ntfs3: Hot fix free clusters\n");
+ pr_notice("ntfs3: Max link count %u\n", NTFS_LINK_MAX);
+
+#ifdef CONFIG_NTFS3_FS_POSIX_ACL
+ pr_notice("ntfs3: Enabled Linux POSIX ACLs support\n");
+#endif
+#ifdef CONFIG_NTFS3_64BIT_CLUSTER
+ pr_notice("ntfs3: Activated 64 bits per cluster\n");
+#else
+ pr_notice("ntfs3: Activated 32 bits per cluster\n");
+#endif
+#ifdef CONFIG_NTFS3_LZX_XPRESS
+ pr_notice("ntfs3: Read-only lzx/xpress compression included\n");
+#endif
+
+ err = ntfs3_init_bitmap();
+ if (err)
+ return err;
+
+ ntfs_inode_cachep = kmem_cache_create(
+ "ntfs_inode_cache", sizeof(struct ntfs_inode), 0,
+ (SLAB_RECLAIM_ACCOUNT | SLAB_MEM_SPREAD | SLAB_ACCOUNT),
+ init_once);
+ if (!ntfs_inode_cachep) {
+ err = -ENOMEM;
+ goto out1;
+ }
+
+ err = register_filesystem(&ntfs_fs_type);
+ if (err)
+ goto out;
+
+ return 0;
+out:
+ kmem_cache_destroy(ntfs_inode_cachep);
+out1:
+ ntfs3_exit_bitmap();
+ return err;
+}
+
+static void __exit exit_ntfs_fs(void)
+{
+ if (ntfs_inode_cachep) {
+ rcu_barrier();
+ kmem_cache_destroy(ntfs_inode_cachep);
+ }
+
+ unregister_filesystem(&ntfs_fs_type);
+ ntfs3_exit_bitmap();
+}
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("ntfs3 read/write filesystem");
+MODULE_INFO(behaviour, "Index binary search");
+MODULE_INFO(behaviour, "Hot fix free clusters");
+#ifdef CONFIG_NTFS3_FS_POSIX_ACL
+MODULE_INFO(behaviour, "Enabled Linux POSIX ACLs support");
+#endif
+#ifdef CONFIG_NTFS3_64BIT_CLUSTER
+MODULE_INFO(cluster, "Activated 64 bits per cluster");
+#else
+MODULE_INFO(cluster, "Activated 32 bits per cluster");
+#endif
+#ifdef CONFIG_NTFS3_LZX_XPRESS
+MODULE_INFO(compression, "Read-only lzx/xpress compression included");
+#endif
+
+MODULE_AUTHOR("Konstantin Komarov");
+MODULE_ALIAS_FS("ntfs3");
+
+module_init(init_ntfs_fs);
+module_exit(exit_ntfs_fs);
--
2.30.0
1
0
07 Dec '21
From: 沈子俊 <shenzijun(a)kylinos.cn>
mainline inclusion
from mainline-v5.16
commit 4a7e1e5fc294687a8941fa3eeb4a7e8539ca5e2f
category: bugfix
bugzilla: NA
CVE: NA
-----------------------------------------------------------------
When building with clang and GNU as, there is a warning about ignored
changed section attributes:
/tmp/sm4-c916c8.s: Assembler messages:
/tmp/sm4-c916c8.s:677: Warning: ignoring changed section attributes for
.data..cacheline_aligned
"static const" places the data in .rodata but __cacheline_aligned has
the section attribute to place it in .data..cacheline_aligned, in
addition to the aligned attribute.
To keep the alignment but avoid attempting to change sections, use the
____cacheline_aligned attribute, which is just the aligned attribute.
Fixes: 2b31277af577 ("crypto: sm4 - create SM4 library based on sm4 generic code")
Link: https://github.com/ClangBuiltLinux/linux/issues/1441
Signed-off-by: Nathan Chancellor <nathan(a)kernel.org>
Reviewed-by: Tianjia Zhang <tianjia.zhang(a)linux.alibaba.com>
Signed-off-by: Herbert Xu <herbert(a)gondor.apana.org.au>
Signed-off-by: 沈子俊 <shenzijun(a)kylinos.cn>
---
lib/crypto/sm4.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/lib/crypto/sm4.c b/lib/crypto/sm4.c
index 633b59fed9db..284e62576d0c 100644
--- a/lib/crypto/sm4.c
+++ b/lib/crypto/sm4.c
@@ -15,7 +15,7 @@ static const u32 fk[4] = {
0xa3b1bac6, 0x56aa3350, 0x677d9197, 0xb27022dc
};
-static const u32 __cacheline_aligned ck[32] = {
+static const u32 ____cacheline_aligned ck[32] = {
0x00070e15, 0x1c232a31, 0x383f464d, 0x545b6269,
0x70777e85, 0x8c939aa1, 0xa8afb6bd, 0xc4cbd2d9,
0xe0e7eef5, 0xfc030a11, 0x181f262d, 0x343b4249,
@@ -26,7 +26,7 @@ static const u32 __cacheline_aligned ck[32] = {
0x10171e25, 0x2c333a41, 0x484f565d, 0x646b7279
};
-static const u8 __cacheline_aligned sbox[256] = {
+static const u8 ____cacheline_aligned sbox[256] = {
0xd6, 0x90, 0xe9, 0xfe, 0xcc, 0xe1, 0x3d, 0xb7,
0x16, 0xb6, 0x14, 0xc2, 0x28, 0xfb, 0x2c, 0x05,
0x2b, 0x67, 0x9a, 0x76, 0x2a, 0xbe, 0x04, 0xc3,
--
2.30.0
1
2
[PATCH openEuler-1.0-LTS 1/6] ext4: always panic when errors=panic is specified
by Yang Yingliang 07 Dec '21
by Yang Yingliang 07 Dec '21
07 Dec '21
From: Ye Bin <yebin10(a)huawei.com>
mainline inclusion
from mainline-v5.13-rc1
commit ac2f7ca51b0929461ea49918f27c11b680f28995
category: bugfix
bugzilla: 182973
CVE: NA
-------------------------------------------------
Before commit 014c9caa29d3 ("ext4: make ext4_abort() use
__ext4_error()"), the following series of commands would trigger a
panic:
1. mount /dev/sda -o ro,errors=panic test
2. mount /dev/sda -o remount,abort test
After commit 014c9caa29d3, remounting a file system using the test
mount option "abort" will no longer trigger a panic. This commit will
restore the behaviour immediately before commit 014c9caa29d3.
(However, note that the Linux kernel's behavior has not been
consistent; some previous kernel versions, including 5.4 and 4.19
similarly did not panic after using the mount option "abort".)
This also makes a change to long-standing behaviour; namely, the
following series commands will now cause a panic, when previously it
did not:
1. mount /dev/sda -o ro,errors=panic test
2. echo test > /sys/fs/ext4/sda/trigger_fs_error
However, this makes ext4's behaviour much more consistent, so this is
a good thing.
Cc: stable(a)kernel.org
Fixes: 014c9caa29d3 ("ext4: make ext4_abort() use __ext4_error()")
Signed-off-by: Ye Bin <yebin10(a)huawei.com>
Link: https://lore.kernel.org/r/20210401081903.3421208-1-yebin10@huawei.com
Signed-off-by: Theodore Ts'o <tytso(a)mit.edu>
Signed-off-by: Zheng Liang <zhengliang6(a)huawei.com>
Reviewed-by: Zhang Yi <yi.zhang(a)huawei.com>
Reviewed-by: Zhang Yi <yi.zhang(a)huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com>
---
fs/ext4/super.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index a051671f7cb89..5a58f72ac2090 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -652,12 +652,6 @@ static void ext4_handle_error(struct super_block *sb, bool force_ro, int error,
ext4_commit_super(sb);
}
- if (sb_rdonly(sb))
- return;
-
- if (continue_fs)
- goto out;
-
/*
* We force ERRORS_RO behavior when system is rebooting. Otherwise we
* could panic during 'reboot -f' as the underlying device got already
@@ -668,6 +662,12 @@ static void ext4_handle_error(struct super_block *sb, bool force_ro, int error,
sb->s_id);
}
+ if (sb_rdonly(sb))
+ return;
+
+ if (continue_fs)
+ goto out;
+
ext4_msg(sb, KERN_CRIT, "Remounting filesystem read-only");
/*
* Make sure updated value of ->s_mount_flags will be visible before
--
2.25.1
1
5
Backport 5.10.81 LTS patches from upstream.
Borislav Petkov (1):
selftests/x86/iopl: Adjust to the faked iopl CLI/STI usage
Gao Xiang (1):
erofs: fix unsafe pagevec reuse of hooked pclusters
Greg Thelen (1):
perf/core: Avoid put_page() when GUP fails
Joakim Zhang (2):
net: stmmac: add clocks management for gmac driver
net: stmmac: fix system hang if change mac address after interface
ifdown
Kees Cook (1):
fortify: Explicitly disable Clang support
Marc Zyngier (2):
PCI/MSI: Deal with devices lying about their MSI mask capability
PCI: Add MSI masking quirk for Nvidia ION AHCI
Masami Hiramatsu (1):
bootconfig: init: Fix memblock leak in xbc_make_cmdline()
Michael Riesch (1):
net: stmmac: dwmac-rk: fix unbalanced pm_runtime_enable warnings
Nathan Chancellor (1):
scripts/lld-version.sh: Rewrite based on upstream ld-version.sh
Peter Zijlstra (1):
x86/iopl: Fake iopl(3) CLI/STI usage
Subbaraman Narayanamurthy (1):
thermal: Fix NULL pointer dereferences in of_thermal_ functions
Sven Schnelle (1):
parisc/entry: fix trace test in syscall exit path
Thomas Gleixner (1):
PCI/MSI: Destroy sysfs before freeing entries
Wei Yongjun (1):
net: stmmac: platform: fix build error with !CONFIG_PM_SLEEP
Wong Vee Khee (1):
net: stmmac: fix issue where clk is being unprepared twice
Xie Yongji (2):
block: Add a helper to validate the block size
loop: Use blk_validate_block_size() to validate block size
Yang Yingliang (1):
net: stmmac: fix missing unlock on error in stmmac_suspend()
Yue Hu (1):
erofs: remove the occupied parameter from z_erofs_pagevec_enqueue()
arch/parisc/kernel/entry.S | 2 +-
arch/x86/include/asm/insn-eval.h | 1 +
arch/x86/include/asm/processor.h | 1 +
arch/x86/kernel/process.c | 1 +
arch/x86/kernel/traps.c | 34 ++++++
arch/x86/lib/insn-eval.c | 2 +-
drivers/block/loop.c | 19 +--
.../net/ethernet/stmicro/stmmac/dwmac-rk.c | 9 --
drivers/net/ethernet/stmicro/stmmac/stmmac.h | 1 +
.../net/ethernet/stmicro/stmmac/stmmac_main.c | 87 ++++++++++++--
.../net/ethernet/stmicro/stmmac/stmmac_mdio.c | 111 ++++++++++++++----
.../ethernet/stmicro/stmmac/stmmac_platform.c | 30 ++++-
drivers/pci/msi.c | 27 +++--
drivers/pci/quirks.c | 6 +
drivers/thermal/thermal_of.c | 9 +-
fs/erofs/zdata.c | 15 ++-
fs/erofs/zpvec.h | 14 ++-
include/linux/blkdev.h | 8 ++
include/linux/pci.h | 2 +
init/main.c | 1 +
kernel/events/core.c | 10 +-
scripts/lld-version.sh | 35 ++++--
security/Kconfig | 3 +
tools/testing/selftests/x86/iopl.c | 78 ++++++++----
24 files changed, 375 insertions(+), 131 deletions(-)
--
2.20.1
1
21
Backport 5.10.80 LTS patches from upstream.
Ahmad Fatoum (1):
watchdog: f71808e_wdt: fix inaccurate report in WDIOC_GETTIMEOUT
Ajay Singh (1):
wilc1000: fix possible memory leak in cfg_scan_result()
Alagu Sankar (1):
ath10k: high latency fixes for beacon buffer
Aleksander Jan Bajkowski (3):
MIPS: lantiq: dma: add small delay after reset
MIPS: lantiq: dma: reset correct number of channel
MIPS: lantiq: dma: fix burst length for DEU
Alex Bee (1):
arm64: dts: rockchip: Fix GPU register width for RK3328
Alex Deucher (1):
drm/amdgpu/gmc6: fix DMA mask from 44 to 40 bits
Alex Xu (Hello71) (1):
drm/plane-helper: fix uninitialized variable reference
Alexander Tsoy (1):
ALSA: usb-audio: Add registration quirk for JBL Quantum 400
Alexandru Ardelean (1):
iio: st_sensors: disable regulators after device unregistration
Alexei Starovoitov (2):
bpf: Fix propagation of bounds from 64-bit min/max into 32-bit and
var_off.
bpf: Fix propagation of signed bounds from 64-bit min/max into 32-bit.
Alexey Gladkov (1):
Fix user namespace leak
Alok Prasad (1):
RDMA/qedr: Fix NULL deref for query_qp on the GSI QP
Amelie Delaunay (3):
usb: dwc2: drd: fix dwc2_force_mode call in dwc2_ovr_init
usb: dwc2: drd: fix dwc2_drd_role_sw_set when clock could be disabled
usb: dwc2: drd: reset current session before setting the new one
Amit Engel (1):
nvmet-tcp: fix header digest verification
Anand Jain (1):
btrfs: call btrfs_check_rw_degradable only if there is a missing
device
Anand Moon (2):
arm64: dts: meson-g12a: Fix the pwm regulator supply properties
arm64: dts: meson-g12b: Fix the pwm regulator supply properties
Anant Thazhemadam (1):
media: usb: dvd-usb: fix uninit-value bug in dibusb_read_eeprom_byte()
Anders Roxell (1):
PM: hibernate: fix sparse warnings
Andrea Righi (1):
selftests/bpf: Fix fclose/pclose mismatch in test_progs
Andreas Gruenbacher (3):
iov_iter: Fix iov_iter_get_pages{,_alloc} page fault return value
gfs2: Cancel remote delete work asynchronously
gfs2: Fix glock_hash_walk bugs
Andreas Kemnade (1):
arm: dts: omap3-gta04a4: accelerometer irq fix
Andrej Shadura (2):
HID: u2fzero: clarify error check and length calculations
HID: u2fzero: properly handle timeouts in usb_submit_urb
Andrey Grodzovsky (1):
drm/amdgpu: Fix MMIO access page fault
Andrii Nakryiko (6):
selftests/bpf: Fix strobemeta selftest regression
libbpf: Fix BTF data layout checks and allow empty BTF
libbpf: Allow loading empty BTFs
libbpf: Fix overflow in BTF sanity checks
libbpf: Fix BTF header parsing checks
selftests/bpf: Fix also no-alu32 strobemeta selftest
André Almeida (1):
ACPI: battery: Accept charges over the design capacity as full
Andy Shevchenko (2):
iio: st_sensors: Call st_sensors_power_enable() from bus drivers
serial: 8250_dw: Drop wrong use of ACPI_PTR()
Anel Orazgaliyeva (1):
cpuidle: Fix kobject memory leaks in error paths
Anson Jacob (1):
drm/amd/display: dcn20_resource_construct reduce scope of FPU enabled
Anssi Hannula (1):
serial: xilinx_uartps: Fix race condition causing stuck TX
Antoine Tenart (1):
net-sysfs: try not to restart the syscall if it will fail eventually
Arnaud Pouliquen (1):
rpmsg: Fix rpmsg_create_ept return when RPMSG config is not defined
Arnd Bergmann (9):
hyperv/vmbus: include linux/bitops.h
ifb: fix building without CONFIG_NET_CLS_ACT
ARM: 9136/1: ARMv7-M uses BE-8, not BE-32
drm/amdgpu: fix warning for overflow check
crypto: ecc - fix CRYPTO_DEFAULT_RNG dependency
memstick: avoid out-of-range warning
arm64: pgtable: make __pte_to_phys/__phys_to_pte_val inline functions
ARM: 9156/1: drop cc-option fallbacks for architecture selection
ath10k: fix invalid dma_addr_t token assignment
Arun Easi (1):
scsi: qla2xxx: Fix kernel crash when accessing port_speed sysfs file
Asmaa Mnebhi (1):
gpio: mlxbf2.c: Add check for bgpio_init failure
Austin Kim (2):
ALSA: synth: missing check for possible NULL after the call to kstrdup
evm: mark evm_fixmode as __ro_after_init
Baochen Qiang (2):
ath11k: Change DMA_FROM_DEVICE to DMA_TO_DEVICE when map reinjected
packets
ath11k: Fix memory leak in ath11k_qmi_driver_event_work
Baptiste Lepers (1):
pnfs/flexfiles: Fix misplaced barrier in nfs4_ff_layout_prepare_ds
Barnabás Pőcze (1):
platform/x86: wmi: do not fail if disabling fails
Bastien Roucariès (1):
ARM: dts: sun7i: A20-olinuxino-lime2: Fix ethernet phy-mode
Benjamin Li (2):
wcn36xx: handle connection loss indication
wcn36xx: add proper DMA memory barriers in rx path
Bixuan Cui (1):
powerpc/44x/fsp2: add missing of_node_put
Bjorn Andersson (1):
soc: qcom: rpmhpd: Make power_on actually enable the domain
Borislav Petkov (1):
x86/sev: Make the #VC exception stacks part of the default stacks
storage
Brett Creeley (1):
ice: Fix not stopping Tx queues for VFs
Bryan O'Donoghue (1):
wcn36xx: Fix Antenna Diversity Switching
Bryant Mairs (1):
drm: panel-orientation-quirks: Add quirk for Aya Neo 2021
Can Guo (1):
scsi: ufs: Refactor ufshcd_setup_clocks() to remove skip_ref_clk
Charan Teja Reddy (1):
dma-buf: WARN on dmabuf release with pending attachments
Chen-Yu Tsai (2):
media: rkvdec: Do not override sizeimage for output format
media: rkvdec: Support dynamic resolution changes
Chengfeng Ye (1):
nfc: pn533: Fix double free when pn533_fill_fragment_skbs() fails
Chenyuan Mi (1):
drm/nouveau/svm: Fix refcount leak bug and missing check against null
bug
Christian Löhle (1):
mmc: dw_mmc: Dont wait for DRTO on Write RSP error
Christoph Hellwig (1):
rds: stop using dmapool
Christophe JAILLET (6):
media: mtk-vpu: Fix a resource leak in the error handling path of
'mtk_vpu_probe()'
mmc: mxs-mmc: disable regulator on error and in the remove function
clk: mvebu: ap-cpu-clk: Fix a memory leak in error handling paths
soc/tegra: Fix an error handling path in tegra_powergate_power_up()
remoteproc: Fix a memory leak in an error handling path in
'rproc_handle_vdev()'
i2c: xlr: Fix a resource leak in the error handling path of
'xlr_i2c_probe()'
Christophe Leroy (1):
video: fbdev: chipsfb: use memset_io() instead of memset()
Claudio Imbrenda (2):
KVM: s390: pv: avoid double free of sida page
KVM: s390: pv: avoid stalls for kvm_s390_pv_init_vm
Claudiu Beznea (2):
clk: at91: sam9x60-pll: use DIV_ROUND_CLOSEST_ULL
dmaengine: at_xdmac: fix AT_XDMAC_CC_PERID() macro
Clément Léger (1):
clk: at91: check pmc node status before registering syscore ops
Colin Ian King (4):
media: cxd2880-spi: Fix a null pointer dereference on error handling
path
media: cx23885: Fix snd_card_free call on null card pointer
media: em28xx: Don't use ops->suspend if it is NULL
mmc: moxart: Fix null pointer dereference on pointer host
Corey Minyard (1):
ipmi: Disable some operations during a panic
Cyril Strejc (1):
net: multicast: calculate csum of looped-back and forwarded packets
Damien Le Moal (1):
libata: fix read log timeout value
Dan Carpenter (13):
tpm: Check for integer overflow in tpm2_map_response_body()
ath11k: fix some sleeping in atomic bugs
b43legacy: fix a lower bounds test
b43: fix a lower bounds test
memstick: jmb38x_ms: use appropriate free function in
jmb38x_ms_alloc_host()
drm/msm: potential error pointer dereference in init()
drm/msm: uninitialized variable in msm_gem_import()
usb: gadget: hid: fix error code in do_config()
scsi: csiostor: Uninitialized data in csio_ln_vnp_read_cbfn()
phy: ti: gmii-sel: check of_get_address() for failure
rtc: rv3032: fix error handling in rv3032_clkout_set_rate()
zram: off by one in read_block_state()
gve: Fix off by one in gve_tx_timeout()
Dan Schatzberg (1):
cgroup: Fix rootcg cpu.stat guest double counting
Daniel Borkmann (2):
net, neigh: Fix NTF_EXT_LEARNED in combination with NTF_USE
net, neigh: Enable state migration between NUD_PERMANENT and NTF_USE
Daniel Jordan (1):
crypto: pcrypt - Delay write to padata->info
Dave Jones (1):
x86/mce: Add errata workaround for Skylake SKX37
David Hildenbrand (1):
s390/gmap: don't unconditionally call pte_unmap_unlock() in
__gmap_zap()
Davide Baldo (1):
ALSA: hda/realtek: Fixes HP Spectre x360 15-eb1xxx speakers
Derong Liu (1):
mmc: mtk-sd: Add wait dma stop done flow
Desmond Cheong Zhi Xi (1):
Bluetooth: fix init and cleanup of sco_conn.timeout_work
Dinghao Liu (1):
Bluetooth: btmtkuart: fix a memleak in mtk_hci_wmt_sync
Dirk Bender (1):
media: mt9p031: Fix corrupted frame after restarting stream
Dmitriy Ulitin (1):
media: stm32: Potential NULL pointer dereference in dcmi_irq_thread()
Dmitry Bogdanov (1):
scsi: qla2xxx: Fix unmap of already freed sgl
Dmitry Osipenko (1):
soc/tegra: pmc: Fix imbalanced clock disabling in error code path
Dominique Martinet (1):
9p/net: fix missing error check in p9_check_errors
Dongli Zhang (2):
xen/netfront: stop tx queues during live migration
vmxnet3: do not stop tx queues after netif_device_detach()
Dongliang Mu (2):
JFS: fix memleak in jfs_mount
memory: fsl_ifc: fix leak of irq and nand_irq in fsl_ifc_ctrl_probe
Dust Li (1):
net/smc: fix sk_refcnt underflow on linkdown and fallback
Eiichi Tsukata (1):
vsock: prevent unnecessary refcnt inc for nonblocking connect
Eric Badger (1):
EDAC/sb_edac: Fix top-of-high-memory value for Broadwell/Haswell
Eric Biggers (1):
fscrypt: allow 256-bit master keys with AES-256-XTS
Eric Dumazet (4):
net: annotate data-race in neigh_output()
tcp: switch orphan_count to bare per-cpu counters
llc: fix out-of-bound array index in llc_sk_dev_hash()
net/sched: sch_taprio: fix undefined behavior in ktime_mono_to_any
Eric W. Biederman (3):
signal: Remove the bogus sigkill_pending in ptrace_stop
signal/mips: Update (_save|_restore)_fp_context to fail with -EFAULT
signal/sh: Use force_sig(SIGKILL) instead of do_group_exit(SIGKILL)
Erik Ekman (2):
sfc: Export fibre-specific supported link modes
sfc: Don't use netif_info before net_device setup
Evgeny Novikov (3):
media: atomisp: Fix error handling in probe
media: dvb-frontends: mn88443x: Handle errors of clk_prepare_enable()
mtd: spi-nor: hisi-sfc: Remove excessive clk_disable_unprepare()
Fabio Estevam (1):
ath10k: sdio: Add missing BH locking around napi_schdule()
Filipe Manana (1):
btrfs: fix lost error handling when replaying directory deletes
Florian Westphal (3):
fcnal-test: kill hanging ping/nettest binaries on cleanup
vrf: run conntrack only in context of lower/physdev for locally
generated packets
netfilter: nfnetlink_queue: fix OOB when mac header was cleared
Frank Rowand (1):
of: unittest: fix EXPECT text for gpio hog errors
Gao Xiang (1):
erofs: don't trigger WARN() when decompression fails
Geert Uytterhoeven (6):
arm64: dts: renesas: beacon: Fix Ethernet PHY mode
pinctrl: renesas: checker: Fix off-by-one bug in drive register check
mips: cm: Convert to bitfield API to fix out-of-bounds access
auxdisplay: img-ascii-lcd: Fix lock-up when displaying empty string
auxdisplay: ht16k33: Connect backlight to fbdev
auxdisplay: ht16k33: Fix frame buffer device blanking
Giovanni Cabiddu (2):
crypto: qat - detect PFVF collision after ACK
crypto: qat - disregard spurious PFVF interrupts
Guo Ren (1):
irqchip/sifive-plic: Fixup EOI failed when masked
Guru Das Srinagesh (1):
firmware: qcom_scm: Fix error retval in __qcom_scm_is_call_available()
Halil Pasic (1):
s390/cio: make ccw_device_dma_* more robust
Hannes Reinecke (1):
nvme: drop scan_lock and always kick requeue list when removing
namespaces
Hans de Goede (6):
drm: panel-orientation-quirks: Update the Lenovo Ideapad D330 quirk
(v2)
drm: panel-orientation-quirks: Add quirk for KD Kurio Smart C15200
2-in-1
drm: panel-orientation-quirks: Add quirk for the Samsung Galaxy Book
10.6
brcmfmac: Add DMI nvram filename quirk for Cyberbook T116 tablet
power: supply: bq27xxx: Fix kernel crash on IRQ handler register error
ACPI: PMIC: Fix intel_pmic_regs_handler() read accesses
Hao Wu (1):
tpm: fix Atmel TPM crash caused by too frequent queries
Harald Freudenberger (1):
s390/ap: Fix hanging ioctl caused by orphaned replies
Helge Deller (4):
parisc: Fix set_fixmap() on PA1.x CPUs
parisc: Fix ptrace check on syscall return
task_stack: Fix end_of_stack() for architectures with upwards-growing
stack
parisc: Fix backtrace to always include init funtion names
Henrik Grimler (1):
power: supply: max17042_battery: use VFSOC for capacity when no rsns
Iago Toral Quiroga (1):
drm/v3d: fix wait for TMU write combiner flush
Ian Rogers (1):
perf bpf: Add missing free to bpf_event__print_bpf_prog_info()
Igor Pylypiv (1):
scsi: pm80xx: Fix misleading log statement in
pm8001_mpi_get_nvmd_resp()
Ilya Leoshkevich (1):
libbpf: Fix endianness detection in BPF_CORE_READ_BITFIELD_PROBED()
Imre Deak (2):
ALSA: hda: Release controller display power during shutdown/reboot
ALSA: hda: Fix hang during shutdown due to link reset
Ingmar Klein (1):
PCI: Mark Atheros QCA6174 to avoid bus reset
Israel Rukshin (3):
nvmet: fix use-after-free when a port is removed
nvmet-rdma: fix use-after-free when a port is removed
nvmet-tcp: fix use-after-free when a port is removed
J. Bruce Fields (1):
nfsd: don't alloc under spinlock in rpc_parse_scope_id
Jack Andersen (1):
mfd: dln2: Add cell for initializing DLN2 ADC
Jackie Liu (3):
ARM: s3c: irq-s3c24xx: Fix return value check for s3c24xx_init_intc()
MIPS: loongson64: make CPU_LOONGSON64 depends on MIPS_FP_SUPPORT
ar7: fix kernel builds for compiler test
Jaegeuk Kim (1):
f2fs: should use GFP_NOFS for directory inodes
Jakob Hauser (1):
power: supply: rt5033_battery: Change voltage values to µV
Jakub Kicinski (4):
net: sched: update default qdisc visibility after Tx queue cnt changes
net: stream: don't purge sk_error_queue in sk_stream_kill_queues()
udp6: allow SO_MARK ctrl msg to affect routing
ethtool: fix ethtool msg len calculation for pause stats
Jan Kara (1):
ocfs2: fix data corruption on truncate
Jane Malalane (1):
x86/cpu: Fix migration safety with X86_BUG_NULL_SEL
Janghyub Seo (1):
r8169: Add device 10ec:8162 to driver r8169
Janis Schoetterl-Glausch (1):
KVM: s390: Fix handle_sske page fault handling
Jaroslav Kysela (1):
ALSA: hda/realtek: Add a quirk for Acer Spin SP513-54N
Jason Ormes (1):
ALSA: usb-audio: Line6 HX-Stomp XL USB_ID for 48k-fixed quirk
Jens Axboe (2):
block: bump max plugged deferred size from 16 to 32
block: remove inaccurate requeue check
Jeremy Soller (1):
ALSA: hda/realtek: Headset fixup for Clevo NH77HJQ
Jernej Skrabec (1):
drm/sun4i: Fix macros in sun8i_csc.h
Jessica Zhang (1):
drm/msm: Fix potential NULL dereference in DPU SSPP
Jia-Ju Bai (1):
fs: orangefs: fix error return code of orangefs_revalidate_lookup()
Jiasheng Jiang (1):
rxrpc: Fix _usecs_to_jiffies() by using usecs_to_jiffies()
Jim Mattson (1):
KVM: selftests: Fix nested SVM tests when built with clang
Jiri Olsa (1):
selftests/bpf: Fix perf_buffer test on system with offline cpus
Joerg Roedel (1):
x86/sev: Fix stack type check in vc_switch_off_ist()
Johan Hovold (14):
Input: iforce - fix control-message timeout
ALSA: ua101: fix division by zero at probe
ALSA: 6fire: fix control and bulk message timeouts
ALSA: line6: fix control and interrupt message timeouts
mwifiex: fix division by zero in fw download path
ath6kl: fix division by zero in send path
ath6kl: fix control-message timeout
ath10k: fix control-message timeout
ath10k: fix division by zero in send path
rtl8187: fix control-message timeouts
serial: 8250: fix racy uartclk update
most: fix control-message timeouts
USB: iowarrior: fix control-message timeouts
USB: chipidea: fix interrupt deadlock
Johannes Berg (1):
iwlwifi: mvm: disable RX-diversity in powersave
John Fastabend (2):
bpf, sockmap: Remove unhash handler for BPF sockmap usage
bpf: sockmap, strparser, and tls are reusing qdisc_skb_cb and
colliding
John Fraker (1):
gve: Recover from queue stall due to missed IRQ
Johnathon Clark (1):
ALSA: hda/realtek: Fix mic mute LED for the HP Spectre x360 14
Jon Maxwell (1):
tcp: don't free a FIN sk_buff in tcp_remove_empty_skb()
Jonas Dreßler (5):
mwifiex: Read a PCI register after writing the TX ring write pointer
mwifiex: Try waking the firmware until we get an interrupt
mwifiex: Run SET_BSS_MODE when changing from P2P to STATION vif-type
mwifiex: Properly initialize private structure on interface type
changes
mwifiex: Send DELBA requests according to spec
Josef Bacik (1):
btrfs: do not take the uuid_mutex in btrfs_rm_device
Josh Don (1):
fs/proc/uptime.c: Fix idle time reporting in /proc/uptime
Josh Poimboeuf (1):
objtool: Add xen_start_kernel() to noreturn list
Juergen Gross (1):
xen/balloon: add late_initcall_sync() for initial ballooning done
Junji Wei (1):
RDMA/rxe: Fix wrong port_cap_flags
Kai-Heng Feng (1):
ALSA: hda/realtek: Add quirk for HP EliteBook 840 G7 mute LED
Kalesh Singh (1):
tracing/cfi: Fix cmp_entries_* functions signature mismatch
Kan Liang (2):
perf/x86/intel/uncore: Support extra IMC channel on Ice Lake server
perf/x86/intel/uncore: Fix Intel ICX IIO event constraints
Kees Cook (5):
leaking_addresses: Always print a trailing newline
media: radio-wl1273: Avoid card name truncation
media: si470x: Avoid card name truncation
media: tm6000: Avoid card name truncation
clocksource/drivers/timer-ti-dm: Select TIMER_OF
Kewei Xu (1):
i2c: mediatek: fixing the incorrect register offset
Kishon Vijay Abraham I (2):
arm64: dts: ti: k3-j721e-main: Fix "max-virtual-functions" in PCIe EP
nodes
arm64: dts: ti: k3-j721e-main: Fix "bus-range" upto 256 bus number for
PCIe
Krzysztof Kozlowski (3):
regulator: s5m8767: do not use reset value as DVS voltage if GPIO DVS
is disabled
regulator: dt-bindings: samsung,s5m8767: correct
s5m8767,pmic-buck-default-dvs-idx property
mfd: core: Add missing of_node_put for loop iteration
Kumar Kartikeya Dwivedi (1):
selftests/bpf: Fix fd cleanup in sk_lookup test
Kunihiko Hayashi (1):
PCI: uniphier: Serialize INTx masking/unmasking and fix the bit
operation
Lad Prabhakar (1):
spi: spi-rpc-if: Check return value of rpcif_sw_init()
Lars-Peter Clausen (1):
dmaengine: dmaengine_desc_callback_valid(): Check for
`callback_result`
Lasse Collin (2):
lib/xz: Avoid overlapping memcpy() with invalid input with in-place
decompression
lib/xz: Validate the value before assigning it to an enum variable
Lee Jones (1):
soc: qcom: rpmhpd: Provide some missing struct member descriptions
Leon Romanovsky (1):
RDMA/mlx4: Return missed an error if device doesn't support steering
Li Chen (1):
PCI: cadence: Add cdns_plat_pcie_probe() missing return
Li Zhang (1):
btrfs: clear MISSING device status bit in btrfs_close_one_device
Linus Lüssing (1):
ath9k: Fix potential interrupt storm on queue reset
Linus Walleij (1):
net: dsa: rtl8366rb: Fix off-by-one bug
Loic Poulain (6):
wcn36xx: Fix HT40 capability for 2Ghz band
wcn36xx: Fix tx_status mechanism
wcn36xx: Fix (QoS) null data frame bitrate/modulation
wcn36xx: Correct band/freq reporting on RX
ath10k: Fix missing frame timestamp for beacon/probe-resp
wcn36xx: Fix discarded frames due to wrong sequence number
Lorenz Bauer (3):
bpf: Define bpf_jit_alloc_exec_limit for arm64 JIT
bpf: Prevent increasing bpf_jit_limit above max
selftests: bpf: Convert sk_lookup ctx access tests to PROG_TEST_RUN
Lorenzo Bianconi (3):
mt76: mt7615: fix endianness warning in mt7615_mac_write_txwi
mt76: mt76x02: fix endianness warnings in mt76x02_mac.c
mt76: mt7915: fix possible infinite loop release semaphore
Lucas Tanure (1):
ASoC: cs42l42: Disable regulators if probe fails
Lukas Wunner (1):
ifb: Depend on netfilter alternatively to tc
Maciej W. Rozycki (1):
MIPS: Fix assembly error from MIPSr2 code used within
MIPS_ISA_ARCH_LEVEL
Marc Kleine-Budde (1):
can: mcp251xfd: mcp251xfd_chip_start(): fix error handling for
mcp251xfd_chip_rx_int_enable()
Marek Behún (4):
PCI: pci-bridge-emul: Fix emulation of W1C bits
PCI: aardvark: Fix return value of MSI domain .alloc() method
PCI: aardvark: Read all 16-bits from PCIE_MSI_PAYLOAD_REG
PCI: aardvark: Don't spam about PIO Response Status
Marek Vasut (3):
rsi: Fix module dev_oper_mode parameter description
ARM: dts: stm32: Reduce DHCOR SPI NOR frequency to 50 MHz
video: backlight: Drop maximum brightness override for brightness zero
Marijn Suijten (1):
ARM: dts: qcom: msm8974: Add xo_board reference clock to DSI0 PHY
Mario (1):
drm: panel-orientation-quirks: Add quirk for GPD Win3
Mark Brown (1):
tpm_tis_spi: Add missing SPI ID
Mark Rutland (2):
KVM: arm64: Extract ESR_ELx.EC only
irq: mips: avoid nested irq_enter()
Markus Schneider-Pargmann (1):
hwrng: mtk - Force runtime pm ops for sleep ops
Martin Fuzzey (3):
rsi: fix occasional initialisation failure with BT coex
rsi: fix key enabled check causing unwanted encryption for vap_id > 0
rsi: fix rate mask set leading to P2P failure
Martin Kepplinger (1):
media: imx: set a media_device bus_info string
Masami Hiramatsu (2):
ia64: kprobes: Fix to pass correct trampoline address to the handler
ARM: clang: Do not rely on lr register for stacktrace
Mathias Nyman (1):
xhci: Fix USB 3.1 enumeration issues by increasing roothub
power-on-good delay
Matthew Auld (1):
drm/ttm: stop calling tt_swapin in vm_access
Matthias Schiffer (1):
net: phy: micrel: make *-skew-ps check more lenient
Maurizio Lombardi (1):
nvmet-tcp: fix a memory leak when releasing a queue
Max Gurtovoy (1):
nvme-rdma: fix error code in nvme_rdma_setup_ctrl
Maxim Kiselev (1):
net: davinci_emac: Fix interrupt pacing disable
Meng Li (2):
soc: fsl: dpio: replace smp_processor_id with raw_smp_processor_id
soc: fsl: dpio: use the combined functions to protect critical zone
Menglong Dong (1):
workqueue: make sysfs of unbound kworker cpumask more clever
Miaohe Lin (1):
mm/zsmalloc.c: close race window between zs_pool_dec_isolated() and
zs_unregister_migration()
Michael Ellerman (1):
powerpc: Fix is_kvm_guest() / kvm_para_available()
Michael Pratt (1):
posix-cpu-timers: Clear task::posix_cputimers_work in copy_process()
Michael Tretter (1):
media: allegro: ignore interrupt if mailbox is not initialized
Michael Walle (1):
crypto: caam - disable pkc for non-E SoCs
Michal Hocko (1):
mm, oom: do not trigger out_of_memory from the #PF
Michał Mirosław (1):
ARM: 9155/1: fix early early_iounmap()
Miklos Szeredi (1):
fuse: fix page stealing
Miquel Raynal (9):
mtd: rawnand: socrates: Keep the driver compatible with on-die ECC
engines
mtd: rawnand: ams-delta: Keep the driver compatible with on-die ECC
engines
mtd: rawnand: xway: Keep the driver compatible with on-die ECC engines
mtd: rawnand: mpc5121: Keep the driver compatible with on-die ECC
engines
mtd: rawnand: gpio: Keep the driver compatible with on-die ECC engines
mtd: rawnand: pasemi: Keep the driver compatible with on-die ECC
engines
mtd: rawnand: orion: Keep the driver compatible with on-die ECC
engines
mtd: rawnand: plat_nand: Keep the driver compatible with on-die ECC
engines
mtd: rawnand: au1550nd: Keep the driver compatible with on-die ECC
engines
Muchun Song (1):
seq_file: fix passing wrong private data
Nadezda Lutovinova (2):
media: s5p-mfc: Add checking to s5p_mfc_probe().
media: rcar-csi2: Add checking to rcsi2_start_receiver()
Naohiro Aota (1):
block: schedule queue restart after BLK_STS_ZONE_RESOURCE
Nathan Chancellor (1):
platform/x86: thinkpad_acpi: Fix bitwise vs. logical warning
Nathan Lynch (1):
powerpc: fix unbalanced node refcount in check_kvm_guest()
Naveen N. Rao (4):
powerpc/lib: Add helper to check if offset is within conditional
branch range
powerpc/bpf: Validate branch ranges
powerpc/security: Add a helper to query stf_barrier type
powerpc/bpf: Emit stf barrier instruction sequences for BPF_NOSPEC
Neeraj Upadhyay (1):
rcu: Fix existing exp request check in sync_sched_exp_online_cleanup()
Nehal Bakulchandra Shah (1):
usb: xhci: Enable runtime-pm by default on AMD Yellow Carp platform
Nikita Yushchenko (1):
staging: most: dim2: do not double-register the same device
Nuno Sá (2):
iio: ad5770r: make devicetree property reading consistent
iio: adis: do not disabe IRQs in 'adis_init()'
Olivier Moysan (2):
ARM: dts: stm32: fix SAI sub nodes register range
ARM: dts: stm32: fix AV96 board SAI2 pin muxing on stm32mp15
Ondrej Mosnacek (1):
selinux: fix race condition when computing ocontext SIDs
Pablo Neira Ayuso (2):
netfilter: conntrack: set on IPS_ASSURED if flows enters internal
stream state
netfilter: nft_dynset: relax superfluous check on set updates
Pali Rohár (13):
serial: core: Fix initializing and restoring termios speed
PCI: aardvark: Do not clear status bits of masked interrupts
PCI: aardvark: Fix checking for link up via LTSSM state
PCI: aardvark: Do not unmask unused interrupts
PCI: aardvark: Fix reporting Data Link Layer Link Active
PCI: aardvark: Fix configuring Reference clock
PCI: aardvark: Fix support for bus mastering and PCI_COMMAND on
emulated bridge
PCI: aardvark: Fix support for PCI_BRIDGE_CTL_BUS_RESET on emulated
bridge
PCI: aardvark: Set PCI Bridge Class Code to PCI Bridge
PCI: aardvark: Fix support for PCI_ROM_ADDRESS1 on emulated bridge
PCI: aardvark: Fix preserving PCI_EXP_RTCTL_CRSSVE flag on emulated
bridge
PCI: Add PCI_EXP_DEVCTL_PAYLOAD_* macros
PCI: aardvark: Fix PCIe Max Payload Size setting
Paul E. McKenney (1):
rcu-tasks: Move RTGS_WAIT_CBS to beginning of rcu_tasks_kthread() loop
Pavel Skripkin (3):
ALSA: mixer: fix deadlock in snd_mixer_oss_set_volume
media: em28xx: add missing em28xx_close_extension
media: dvb-usb: fix ununit-value in az6027_rc_query
Pawan Gupta (1):
smackfs: Fix use-after-free in netlbl_catmap_walk()
Paweł Anikiel (1):
reset: socfpga: add empty driver allowing consumers to probe
Pekka Korpinen (1):
iio: dac: ad5446: Fix ad5622_write() return value
Peter Rosin (1):
ARM: dts: at91: tse850: the emac<->phy interface is rmii
Peter Zijlstra (5):
locking/lockdep: Avoid RCU-induced noinstr fail
x86: Increase exception stack sizes
x86/xen: Mark cpu_bringup_and_idle() as dead_end_function
objtool: Fix static_call list generation
rcu: Always inline rcu_dynticks_task*_{enter,exit}()
Phoenix Huang (1):
Input: elantench - fix misreporting trackpoint coordinates
Pradeep Kumar Chitrapu (1):
ath11k: fix packet drops due to incorrect 6 GHz freq value in rx
status
Punit Agrawal (1):
kprobes: Do not use local variable when creating debugfs file
Quentin Monnet (1):
bpftool: Avoid leaking the JSON writer prepared for program metadata
Quinn Tran (4):
scsi: qla2xxx: Fix use after free in eh_abort path
scsi: qla2xxx: Relogin during fabric disturbance
scsi: qla2xxx: Fix gnl list corruption
scsi: qla2xxx: Turn off target reset during issue_lip
Rafael J. Wysocki (2):
PM: sleep: Do not let "syscore" devices runtime-suspend during system
transitions
ACPICA: Avoid evaluating methods too early during system resume
Rafał Miłecki (1):
ARM: dts: BCM5301X: Fix memory nodes names
Rahul Lakkireddy (1):
cxgb4: fix eeprom len when diagnostics not implemented
Rahul Tanwar (1):
pinctrl: equilibrium: Fix function addition in multiple groups
Rajat Asthana (1):
media: mceusb: return without resubmitting URB in case of -EPROTO
error.
Randy Dunlap (5):
mmc: winbond: don't build on M68K
ia64: don't do IA64_CMPXCHG_DEBUG without CONFIG_PRINTK
usb: musb: select GENERIC_PHY instead of depending on it
usb: typec: STUSB160X should select REGMAP_I2C
m68k: set a default value for MEMORY_RESERVE
Ranjani Sridharan (1):
ASoC: SOF: topology: do not power down primary core during topology
removal
Reimar Döffinger (1):
libata: fix checking of DMA state
Ricardo Koller (1):
KVM: selftests: Add operand to vmsave/vmload/vmrun in svm.c
Ricardo Ribalda (7):
media: v4l2-ioctl: Fix check_ext_ctrls
media: uvcvideo: Set capability in s_param
media: uvcvideo: Return -EIO for control errors
media: uvcvideo: Set unique vdev name based in type
media: ipu3-imgu: imgu_fmt: Handle properly try
media: ipu3-imgu: VIDIOC_QUERYCAP: Fix bus_info
media: v4l2-ioctl: S_CTRL output the right value
Richard Fitzgerald (4):
ASoC: cs42l42: Correct some register default values
ASoC: cs42l42: Defer probe if request_threaded_irq() returns
EPROBE_DEFER
ASoC: cs42l42: Use device_property API instead of of_property
ASoC: cs42l42: Correct configuring of switch inversion from ts-inv
Robert-Ionut Alexa (1):
soc: fsl: dpaa2-console: free buffer before returning from
dpaa2_console_read
Russell King (Oracle) (1):
net: phylink: avoid mvneta warning when setting pause parameters
Ryder Lee (1):
mt76: mt7915: fix an off-by-one bound check
Sandeep Maheswaram (1):
phy: qcom-snps: Correct the FSEL_MASK
Saurav Kashyap (1):
scsi: qla2xxx: Changes to support FCP2 Target
Scott Wood (1):
rcutorture: Avoid problematic critical section nesting on PREEMPT_RT
Sean Christopherson (3):
x86/irq: Ensure PI wakeup handler is unregistered before module unload
KVM: VMX: Unregister posted interrupt wakeup handler on hardware
unsetup
KVM: nVMX: Query current VMCS when determining if MSR bitmaps are in
use
Sean Young (3):
media: ite-cir: IR receiver stop working after receive overflow
media: ir-kbd-i2c: improve responsiveness of hauppauge zilog receivers
media: ir_toy: assignment to be16 should be of correct type
Sebastian Andrzej Siewior (1):
lockdep: Let lock_is_held_type() detect recursive read as read
Sebastian Krzyszkowiak (2):
power: supply: max17042_battery: Prevent int underflow in
set_soc_threshold
power: supply: max17042_battery: Clear status bits in interrupt
handler
Seevalamuthu Mariappan (1):
ath11k: Align bss_chan_info structure with firmware
Selvin Xavier (1):
RDMA/bnxt_re: Fix query SRQ failure
Shaoying Xu (1):
ext4: fix lazy initialization next schedule time computation in more
granular unit
Shayne Chen (2):
mt76: mt7915: fix sta_rec_wtbl tag len
mt76: mt7915: fix muar_idx in mt7915_mcu_alloc_sta_req()
Shuah Khan (2):
selftests: kvm: fix mismatched fclose() after popen()
selftests/core: fix conflicting types compile error for close_range()
Shyam Sundar S K (1):
net: amd-xgbe: Toggle PLL settings during rate change
Sidong Yang (1):
btrfs: reflink: initialize return value to 0 in btrfs_extent_same()
Simon Ser (1):
drm/panel-orientation-quirks: add Valve Steam Deck
Srikar Dronamraju (3):
powerpc: Refactor is_kvm_guest() declaration to new header
powerpc: Rename is_kvm_guest() to check_kvm_guest()
powerpc: Reintroduce is_kvm_guest() as a fast-path check
Srinivas Kandagatla (2):
soundwire: debugfs: use controller id and link_id for debugfs
scsi: ufs: ufshcd-pltfrm: Fix memory leak due to probe defer
Sriram R (2):
ath11k: Avoid reg rules update during firmware recovery
ath11k: Avoid race during regd updates
Stafford Horne (1):
openrisc: fix SMP tlb flush NULL pointer dereference
Stefan Agner (2):
phy: micrel: ksz8041nl: do not use power down mode
serial: imx: fix detach/attach of serial console
Stefan Schaeckeler (1):
ACPI: AC: Quirk GK45 to skip reading _PSR
Stephan Gerhold (2):
arm64: dts: qcom: msm8916: Fix Secondary MI2S bit clock
arm64: dts: qcom: pm8916: Remove wrong reg-names for rtc@6000
Stephen Suryaputra (1):
gre/sit: Don't generate link-local addr if addr_gen_mode is
IN6_ADDR_GEN_MODE_NONE
Steven Rostedt (VMware) (2):
ring-buffer: Protect ring_buffer_reset() from reentrancy
tracefs: Have tracefs directories not set OTH permission bits by
default
Sudarshan Rajagopalan (1):
arm64: mm: update max_pfn after memory hotplug
Sukadev Bhattiprolu (2):
ibmvnic: don't stop queue in xmit
ibmvnic: Process crqs after enabling interrupts
Sungjong Seo (1):
exfat: fix incorrect loading of i_blocks for large files
Sven Eckelmann (1):
ath10k: fix max antenna gain unit
Sven Schnelle (4):
parisc: fix warning in flush_tlb_all
parisc/unwind: fix unwinder when CONFIG_64BIT is enabled
parisc/kgdb: add kgdb_roundup() to make kgdb work with idle polling
s390/tape: fix timer initialization in tape_std_assign()
Sylwester Dziedziuch (1):
ice: Fix replacing VF hardware MAC to existing MAC filter
Tadeusz Struk (1):
scsi: core: Remove command size deduction from scsi_setup_scsi_cmnd()
Takashi Iwai (8):
Input: i8042 - Add quirk for Fujitsu Lifebook T725
ALSA: hda/realtek: Add a quirk for HP OMEN 15 mute LED
ALSA: hda/realtek: Add quirk for ASUS UX550VE
ALSA: hda: Free card instance properly at probe errors
ALSA: timer: Unconditionally unlink slave instances, too
ALSA: mixer: oss: Fix racy access to slots
ALSA: hda: Reduce udelay() at SKL+ position reporting
ALSA: hda: Use position buffer for SKL+ again
Tang Bin (1):
crypto: s5p-sss - Add error handling in s5p_aes_probe()
Tao Zhang (1):
coresight: cti: Correct the parameter for pm_runtime_put
Tetsuo Handa (2):
smackfs: use __GFP_NOFAIL for smk_cipso_doi()
smackfs: use netlbl_cfg_cipsov4_del() for deleting cipso_v4_doi
Thomas Perrot (1):
spi: spl022: fix Microwire full duplex mode
Tiezhu Yang (1):
samples/kretprobes: Fix return value if register_kretprobe() failed
Tim Crawford (1):
ALSA: hda/realtek: Add quirk for Clevo PC70HS
Tim Gardner (2):
drm/msm: prevent NULL dereference in msm_gpu_crashstate_capture()
net: enetc: unmap DMA in enetc_send_cmd()
Todd Kjos (3):
binder: use euid from cred instead of using task
binder: use cred instead of task for selinux checks
binder: use cred instead of task for getsecid
Tom Lendacky (3):
x86/sme: Use #define USE_EARLY_PGTABLE_L5 in mem_encrypt_identity.c
arch/cc: Introduce a function to check for confidential computing
features
x86/sev: Add an x86 version of cc_platform_has()
Tom Rix (2):
media: TDA1997x: handle short reads of hdmi info frame.
apparmor: fix error check
Tong Zhang (1):
scsi: dc395: Fix error case unwinding
Tony Lindgren (3):
mmc: sdhci-omap: Fix NULL pointer exception if regulator is not
configured
mmc: sdhci-omap: Fix context restore
bus: ti-sysc: Fix timekeeping_suspended warning on resume
Tony Lu (1):
net/smc: Fix smc_link->llc_testlink_time overflow
Trond Myklebust (6):
NFS: Fix dentry verifier races
NFS: Fix deadlocks in nfs_scan_commit_list()
NFS: Fix up commit deadlocks
NFS: Fix an Oops in pnfs_mark_request_commit()
NFSv4: Fix a regression in nfs_set_open_stateid_locked()
SUNRPC: Partial revert of commit 6f9f17287e78
Tuo Li (2):
media: s5p-mfc: fix possible null-pointer dereference in
s5p_mfc_probe()
ath: dfs_pattern_detector: Fix possible null-pointer dereference in
channel_detector_create()
Vasant Hegde (1):
powerpc/powernv/prd: Unregister OPAL_MSG_PRD2 notifier during module
unload
Vasily Averin (2):
memcg: prohibit unconditional exceeding the limit of dying tasks
mm, oom: pagefault_out_of_memory: don't force global OOM for dying
tasks
Vegard Nossum (1):
staging: ks7010: select CRYPTO_HASH/CRYPTO_MICHAEL_MIC
Vincent Donnefort (1):
PM: EM: Fix inefficient states detection
Vineeth Vijayan (1):
s390/cio: check the subchannel validity for dev_busid
Vitaly Kuznetsov (1):
x86/hyperv: Protect set_hv_tscchange_cb() against getting preempted
Vladimir Oltean (1):
net: stmmac: allow a tc-taprio base-time of zero
Vladimir Zapolskiy (1):
phy: qcom-qusb2: Fix a memory leak on probe
Waiman Long (1):
cgroup: Make rebind_subsystems() disable v2 controllers all at once
Walter Stoll (1):
watchdog: Fix OMAP watchdog early handling
Wan Jiabing (1):
soc: qcom: apr: Add of_node_put() before return
Wang Hai (3):
USB: serial: keyspan: fix memleak on probe errors
libertas_tf: Fix possible memory leak in probe and disconnect
libertas: Fix possible memory leak in probe and disconnect
Wen Gong (1):
ath11k: add handler for scan event WMI_SCAN_EVENT_DEQUEUED
Wen Gu (1):
net/smc: Correct spelling mistake to TCPF_SYN_RECV
Willem de Bruijn (1):
selftests/net: udpgso_bench_rx: fix port argument
Wolfram Sang (1):
memory: renesas-rpc-if: Correct QSPI data transfer in Manual mode
Xiao Ni (1):
md: update superblock after changing rdev flags in state_store
Xiaoming Ni (2):
powerpc/85xx: Fix oops when mpc85xx_smp_guts_ids node cannot be found
powerpc/85xx: fix timebase sync issue when CONFIG_HOTPLUG_CPU=n
Xin Xiong (1):
mmc: moxart: Fix reference count leaks in moxart_probe
Xuan Zhuo (1):
virtio_ring: check desc == NULL when using indirect with packed
Yajun Deng (1):
net: net_namespace: Fix undefined member in key_remove_domain()
Yang Yingliang (6):
ASoC: soc-core: fix null-ptr-deref in snd_soc_del_component_unlocked()
pinctrl: core: fix possible memory leak in pinctrl_enable()
spi: bcm-qspi: Fix missing clk_disable_unprepare() on error in
bcm_qspi_probe()
hwmon: Fix possible memleak in __hwmon_device_register()
driver core: Fix possible memory leak in device_link_add()
power: supply: max17040: fix null-ptr-deref in max17040_probe()
Yazen Ghannam (1):
EDAC/amd64: Handle three rank interleaving mode
Yifan Zhang (1):
drm/amdkfd: fix resume error when iommu disabled in Picasso
Yu Xiao (1):
nfp: bpf: relax prog rejection for mtu check through max_pkt_offset
YueHaibing (2):
opp: Fix return in _opp_add_static_v2()
xen-pciback: Fix return in pm_ctrl_init()
Zev Weiss (3):
hwmon: (pmbus/lm25066) Add offset coefficients
hwmon: (pmbus/lm25066) Let compiler determine outer dimension of
lm25066_coeff
mtd: core: don't remove debugfs directory if device is in use
Zhang Changzhong (2):
can: j1939: j1939_tp_cmd_recv(): ignore abort message in the BAM
transport
can: j1939: j1939_can_recv(): ignore messages with invalid source
address
Zhang Qiao (1):
kernel/sched: Fix sched_fork() access an invalid sched_task_group
Zheyu Ma (7):
cavium: Return negative value when pci_alloc_irq_vectors() fails
scsi: qla2xxx: Return -ENOMEM if kzalloc() fails
mISDN: Fix return values of the probe function
cavium: Fix return values of the probe function
media: netup_unidvb: handle interrupt properly according to the
firmware
memstick: r592: Fix a UAF bug when removing the driver
mwl8k: Fix use-after-free in mwl8k_fw_state_machine()
Ziyang Xuan (2):
rsi: stop thread firstly in rsi_91x_init() error handling
net: vlan: fix a UAF in vlan_dev_real_dev()
Zong-Zhe Yang (1):
rtw88: fix RX clock gate setting while fifo dump
jing yangyang (1):
firmware/psci: fix application of sizeof to pointer
liuyuntao (1):
virtio-gpu: fix possible memory allocation failure
.../admin-guide/kernel-parameters.txt | 7 +
.../bindings/regulator/samsung,s5m8767.txt | 23 +-
Documentation/filesystems/fscrypt.rst | 10 +-
arch/Kconfig | 3 +
arch/arm/Makefile | 22 +-
arch/arm/boot/dts/at91-tse850-3.dts | 2 +-
arch/arm/boot/dts/bcm4708-netgear-r6250.dts | 2 +-
arch/arm/boot/dts/bcm4709-asus-rt-ac87u.dts | 2 +-
.../boot/dts/bcm4709-buffalo-wxr-1900dhp.dts | 2 +-
arch/arm/boot/dts/bcm4709-linksys-ea9200.dts | 2 +-
arch/arm/boot/dts/bcm4709-netgear-r7000.dts | 2 +-
arch/arm/boot/dts/bcm4709-netgear-r8000.dts | 2 +-
.../boot/dts/bcm4709-tplink-archer-c9-v1.dts | 2 +-
arch/arm/boot/dts/bcm47094-luxul-xwc-2000.dts | 2 +-
arch/arm/boot/dts/bcm53016-meraki-mr32.dts | 2 +-
arch/arm/boot/dts/bcm94708.dts | 2 +-
arch/arm/boot/dts/bcm94709.dts | 2 +-
arch/arm/boot/dts/omap3-gta04.dtsi | 2 +-
arch/arm/boot/dts/qcom-msm8974.dtsi | 4 +-
arch/arm/boot/dts/stm32mp15-pinctrl.dtsi | 8 +-
arch/arm/boot/dts/stm32mp151.dtsi | 16 +-
arch/arm/boot/dts/stm32mp15xx-dhcor-som.dtsi | 2 +-
.../boot/dts/sun7i-a20-olinuxino-lime2.dts | 2 +-
arch/arm/kernel/stacktrace.c | 3 +-
arch/arm/mach-s3c/irq-s3c24xx.c | 22 +-
arch/arm/mm/Kconfig | 2 +-
arch/arm/mm/mmu.c | 4 +-
.../boot/dts/amlogic/meson-g12a-sei510.dts | 2 +-
.../boot/dts/amlogic/meson-g12a-u200.dts | 2 +-
.../boot/dts/amlogic/meson-g12a-x96-max.dts | 2 +-
.../dts/amlogic/meson-g12b-khadas-vim3.dtsi | 4 +-
.../dts/amlogic/meson-g12b-odroid-n2.dtsi | 4 +-
.../boot/dts/amlogic/meson-g12b-w400.dtsi | 4 +-
arch/arm64/boot/dts/qcom/msm8916.dtsi | 8 +-
arch/arm64/boot/dts/qcom/pm8916.dtsi | 1 -
.../boot/dts/renesas/beacon-renesom-som.dtsi | 1 +
arch/arm64/boot/dts/rockchip/rk3328.dtsi | 2 +-
arch/arm64/boot/dts/ti/k3-j721e-main.dtsi | 16 +-
arch/arm64/include/asm/esr.h | 1 +
arch/arm64/include/asm/pgtable.h | 12 +-
arch/arm64/kvm/hyp/hyp-entry.S | 2 +-
arch/arm64/kvm/hyp/nvhe/host.S | 2 +-
arch/arm64/mm/mmu.c | 5 +
arch/arm64/net/bpf_jit_comp.c | 5 +
arch/ia64/Kconfig.debug | 2 +-
arch/ia64/kernel/kprobes.c | 9 +-
arch/m68k/Kconfig.machine | 1 +
arch/mips/Kconfig | 1 +
arch/mips/include/asm/cmpxchg.h | 5 +-
arch/mips/include/asm/mips-cm.h | 12 +-
arch/mips/kernel/mips-cm.c | 21 +-
arch/mips/kernel/r2300_fpu.S | 4 +-
arch/mips/kernel/syscall.c | 9 -
arch/mips/lantiq/xway/dma.c | 23 +-
arch/openrisc/kernel/dma.c | 4 +-
arch/openrisc/kernel/smp.c | 6 +-
arch/parisc/kernel/entry.S | 2 +-
arch/parisc/kernel/smp.c | 19 +-
arch/parisc/kernel/unwind.c | 21 +-
arch/parisc/kernel/vmlinux.lds.S | 3 +-
arch/parisc/mm/fixmap.c | 5 +-
arch/parisc/mm/init.c | 4 +-
arch/powerpc/include/asm/code-patching.h | 1 +
arch/powerpc/include/asm/firmware.h | 6 -
arch/powerpc/include/asm/kvm_guest.h | 25 ++
arch/powerpc/include/asm/kvm_para.h | 2 +-
arch/powerpc/include/asm/security_features.h | 5 +
arch/powerpc/kernel/firmware.c | 12 +-
arch/powerpc/kernel/security.c | 5 +
arch/powerpc/lib/code-patching.c | 7 +-
arch/powerpc/net/bpf_jit.h | 33 ++-
arch/powerpc/net/bpf_jit64.h | 8 +-
arch/powerpc/net/bpf_jit_comp64.c | 64 ++++-
arch/powerpc/platforms/44x/fsp2.c | 2 +
arch/powerpc/platforms/85xx/Makefile | 4 +-
arch/powerpc/platforms/85xx/mpc85xx_pm_ops.c | 7 +-
arch/powerpc/platforms/85xx/smp.c | 12 +-
arch/powerpc/platforms/powernv/opal-prd.c | 12 +-
arch/powerpc/platforms/pseries/smp.c | 3 +
arch/s390/kvm/priv.c | 2 +
arch/s390/kvm/pv.c | 21 +-
arch/s390/mm/gmap.c | 5 +-
arch/sh/kernel/cpu/fpu.c | 10 +-
arch/x86/Kconfig | 1 +
arch/x86/events/intel/uncore_snbep.c | 6 +-
arch/x86/hyperv/hv_init.c | 5 +-
arch/x86/include/asm/cpu_entry_area.h | 8 +-
arch/x86/include/asm/mem_encrypt.h | 1 +
arch/x86/include/asm/page_64_types.h | 2 +-
arch/x86/kernel/Makefile | 6 +
arch/x86/kernel/cc_platform.c | 69 +++++
arch/x86/kernel/cpu/amd.c | 2 +
arch/x86/kernel/cpu/common.c | 44 ++-
arch/x86/kernel/cpu/cpu.h | 1 +
arch/x86/kernel/cpu/hygon.c | 2 +
arch/x86/kernel/cpu/mce/intel.c | 5 +-
arch/x86/kernel/irq.c | 4 +-
arch/x86/kernel/sev-es.c | 32 ---
arch/x86/kernel/traps.c | 2 +-
arch/x86/kvm/vmx/vmx.c | 15 +-
arch/x86/mm/cpu_entry_area.c | 7 +
arch/x86/mm/mem_encrypt.c | 1 +
arch/x86/mm/mem_encrypt_identity.c | 9 +
block/blk-mq.c | 18 +-
block/blk.h | 6 +
crypto/Kconfig | 2 +-
crypto/pcrypt.c | 12 +-
drivers/acpi/ac.c | 19 ++
drivers/acpi/acpica/acglobal.h | 2 +
drivers/acpi/acpica/hwesleep.c | 8 +-
drivers/acpi/acpica/hwsleep.c | 11 +-
drivers/acpi/acpica/hwxfsleep.c | 7 +
drivers/acpi/battery.c | 2 +-
drivers/acpi/pmic/intel_pmic.c | 51 ++--
drivers/android/binder.c | 22 +-
drivers/ata/libata-core.c | 2 +-
drivers/ata/libata-eh.c | 8 +
drivers/auxdisplay/ht16k33.c | 66 +++--
drivers/auxdisplay/img-ascii-lcd.c | 10 +
drivers/base/core.c | 4 +-
drivers/base/power/main.c | 9 +-
drivers/block/zram/zram_drv.c | 2 +-
drivers/bluetooth/btmtkuart.c | 13 +-
drivers/bus/ti-sysc.c | 65 ++++-
drivers/char/hw_random/mtk-rng.c | 9 +-
drivers/char/ipmi/ipmi_msghandler.c | 10 +-
drivers/char/ipmi/ipmi_watchdog.c | 17 +-
drivers/char/tpm/tpm2-space.c | 3 +
drivers/char/tpm/tpm_tis_core.c | 26 +-
drivers/char/tpm/tpm_tis_core.h | 4 +
drivers/char/tpm/tpm_tis_spi_main.c | 1 +
drivers/clk/at91/clk-sam9x60-pll.c | 4 +-
drivers/clk/at91/pmc.c | 5 +
drivers/clk/mvebu/ap-cpu-clk.c | 14 +-
drivers/clocksource/Kconfig | 1 +
drivers/cpuidle/sysfs.c | 5 +-
drivers/crypto/caam/caampkc.c | 19 +-
drivers/crypto/caam/regs.h | 3 +
drivers/crypto/qat/qat_common/adf_pf2vf_msg.c | 13 +
drivers/crypto/qat/qat_common/adf_vf_isr.c | 6 +
drivers/crypto/s5p-sss.c | 2 +
drivers/dma-buf/dma-buf.c | 1 +
drivers/dma/at_xdmac.c | 2 +-
drivers/dma/dmaengine.h | 2 +-
drivers/edac/amd64_edac.c | 22 +-
drivers/edac/sb_edac.c | 2 +-
drivers/firmware/psci/psci_checker.c | 2 +-
drivers/firmware/qcom_scm.c | 2 +-
drivers/gpio/gpio-mlxbf2.c | 5 +
drivers/gpu/drm/amd/amdgpu/amdgpu_bo_list.c | 2 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_bo_list.h | 2 +-
drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c | 4 +-
drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c | 8 +-
drivers/gpu/drm/amd/amdgpu/vcn_v2_5.c | 17 +-
drivers/gpu/drm/amd/amdkfd/kfd_device.c | 1 +
.../drm/amd/display/dc/dcn20/dcn20_resource.c | 16 +-
.../gpu/drm/drm_panel_orientation_quirks.c | 47 +++-
drivers/gpu/drm/drm_plane_helper.c | 1 -
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.c | 8 +-
drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 4 +
drivers/gpu/drm/msm/msm_gem.c | 4 +-
drivers/gpu/drm/msm/msm_gpu.c | 2 +-
drivers/gpu/drm/nouveau/nouveau_svm.c | 4 +
drivers/gpu/drm/sun4i/sun8i_csc.h | 4 +-
drivers/gpu/drm/ttm/ttm_bo_vm.c | 5 -
drivers/gpu/drm/v3d/v3d_gem.c | 4 +-
drivers/gpu/drm/virtio/virtgpu_vq.c | 8 +-
drivers/hid/hid-u2fzero.c | 10 +-
drivers/hv/hyperv_vmbus.h | 1 +
drivers/hwmon/hwmon.c | 6 +-
drivers/hwmon/pmbus/lm25066.c | 25 +-
.../hwtracing/coresight/coresight-cti-core.c | 2 +-
drivers/i2c/busses/i2c-mt65xx.c | 2 +-
drivers/i2c/busses/i2c-xlr.c | 6 +-
drivers/iio/accel/st_accel_core.c | 21 +-
drivers/iio/accel/st_accel_i2c.c | 17 +-
drivers/iio/accel/st_accel_spi.c | 17 +-
drivers/iio/dac/ad5446.c | 9 +-
drivers/iio/dac/ad5770r.c | 2 +-
drivers/iio/gyro/st_gyro_core.c | 15 +-
drivers/iio/gyro/st_gyro_i2c.c | 17 +-
drivers/iio/gyro/st_gyro_spi.c | 17 +-
drivers/iio/imu/adis.c | 4 +-
drivers/iio/magnetometer/st_magn_core.c | 15 +-
drivers/iio/magnetometer/st_magn_i2c.c | 14 +-
drivers/iio/magnetometer/st_magn_spi.c | 14 +-
drivers/iio/pressure/st_pressure_core.c | 15 +-
drivers/iio/pressure/st_pressure_i2c.c | 17 +-
drivers/iio/pressure/st_pressure_spi.c | 17 +-
drivers/infiniband/hw/bnxt_re/qplib_fp.c | 3 +-
drivers/infiniband/hw/mlx4/qp.c | 4 +-
drivers/infiniband/hw/qedr/verbs.c | 15 +-
drivers/infiniband/sw/rxe/rxe_param.h | 2 +-
drivers/input/joystick/iforce/iforce-usb.c | 2 +-
drivers/input/mouse/elantech.c | 13 +
drivers/input/serio/i8042-x86ia64io.h | 14 +
drivers/irqchip/irq-bcm6345-l1.c | 2 +-
drivers/irqchip/irq-sifive-plic.c | 8 +-
drivers/isdn/hardware/mISDN/hfcpci.c | 8 +-
drivers/md/md.c | 11 +-
drivers/media/dvb-frontends/mn88443x.c | 18 +-
drivers/media/i2c/ir-kbd-i2c.c | 1 +
drivers/media/i2c/mt9p031.c | 28 +-
drivers/media/i2c/tda1997x.c | 8 +-
drivers/media/pci/cx23885/cx23885-alsa.c | 3 +-
.../pci/netup_unidvb/netup_unidvb_core.c | 27 +-
drivers/media/platform/mtk-vpu/mtk_vpu.c | 5 +-
drivers/media/platform/rcar-vin/rcar-csi2.c | 2 +
drivers/media/platform/s5p-mfc/s5p_mfc.c | 6 +-
drivers/media/platform/stm32/stm32-dcmi.c | 19 +-
drivers/media/radio/radio-wl1273.c | 2 +-
drivers/media/radio/si470x/radio-si470x-i2c.c | 2 +-
drivers/media/radio/si470x/radio-si470x-usb.c | 2 +-
drivers/media/rc/ir_toy.c | 2 +-
drivers/media/rc/ite-cir.c | 2 +-
drivers/media/rc/mceusb.c | 1 +
drivers/media/spi/cxd2880-spi.c | 2 +-
drivers/media/usb/dvb-usb/az6027.c | 1 +
drivers/media/usb/dvb-usb/dibusb-common.c | 2 +-
drivers/media/usb/em28xx/em28xx-cards.c | 5 +-
drivers/media/usb/em28xx/em28xx-core.c | 5 +-
drivers/media/usb/tm6000/tm6000-video.c | 3 +-
drivers/media/usb/uvc/uvc_driver.c | 7 +-
drivers/media/usb/uvc/uvc_v4l2.c | 7 +-
drivers/media/usb/uvc/uvc_video.c | 5 +
drivers/media/v4l2-core/v4l2-ioctl.c | 67 +++--
drivers/memory/fsl_ifc.c | 13 +-
drivers/memory/renesas-rpc-if.c | 113 +++++---
drivers/memstick/core/ms_block.c | 2 +-
drivers/memstick/host/jmb38x_ms.c | 2 +-
drivers/memstick/host/r592.c | 8 +-
drivers/mfd/dln2.c | 18 ++
drivers/mfd/mfd-core.c | 2 +
drivers/mmc/host/Kconfig | 2 +-
drivers/mmc/host/dw_mmc.c | 3 +-
drivers/mmc/host/moxart-mmc.c | 29 +-
drivers/mmc/host/mtk-sd.c | 5 +
drivers/mmc/host/mxs-mmc.c | 10 +
drivers/mmc/host/sdhci-omap.c | 18 +-
drivers/most/most_usb.c | 5 +-
drivers/mtd/mtdcore.c | 4 +-
drivers/mtd/nand/raw/ams-delta.c | 12 +-
drivers/mtd/nand/raw/au1550nd.c | 12 +-
drivers/mtd/nand/raw/gpio.c | 12 +-
drivers/mtd/nand/raw/mpc5121_nfc.c | 12 +-
drivers/mtd/nand/raw/orion_nand.c | 12 +-
drivers/mtd/nand/raw/pasemi_nand.c | 12 +-
drivers/mtd/nand/raw/plat_nand.c | 12 +-
drivers/mtd/nand/raw/socrates_nand.c | 12 +-
drivers/mtd/nand/raw/xway_nand.c | 12 +-
drivers/mtd/spi-nor/controllers/hisi-sfc.c | 1 -
drivers/net/Kconfig | 2 +-
.../net/can/spi/mcp251xfd/mcp251xfd-core.c | 2 +-
drivers/net/dsa/rtl8366rb.c | 2 +-
drivers/net/ethernet/amd/xgbe/xgbe-common.h | 8 +
drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c | 20 +-
.../net/ethernet/cavium/thunder/nic_main.c | 2 +-
.../net/ethernet/cavium/thunder/nicvf_main.c | 4 +-
.../ethernet/chelsio/cxgb4/cxgb4_ethtool.c | 7 +-
drivers/net/ethernet/chelsio/cxgb4/t4_hw.h | 2 +
.../chelsio/inline_crypto/chtls/chtls_cm.c | 2 +-
.../chelsio/inline_crypto/chtls/chtls_cm.h | 2 +-
.../net/ethernet/freescale/enetc/enetc_qos.c | 18 +-
drivers/net/ethernet/google/gve/gve.h | 4 +-
drivers/net/ethernet/google/gve/gve_adminq.h | 1 +
drivers/net/ethernet/google/gve/gve_main.c | 48 +++-
drivers/net/ethernet/ibm/ibmvnic.c | 5 +-
drivers/net/ethernet/intel/ice/ice_base.c | 2 +-
.../net/ethernet/intel/ice/ice_virtchnl_pf.c | 20 +-
drivers/net/ethernet/netronome/nfp/bpf/main.c | 16 +-
drivers/net/ethernet/netronome/nfp/bpf/main.h | 2 +
.../net/ethernet/netronome/nfp/bpf/offload.c | 17 +-
drivers/net/ethernet/realtek/r8169_main.c | 1 +
drivers/net/ethernet/sfc/mcdi_port_common.c | 37 ++-
drivers/net/ethernet/sfc/ptp.c | 4 +-
drivers/net/ethernet/sfc/siena_sriov.c | 2 +-
.../net/ethernet/stmicro/stmmac/stmmac_tc.c | 2 -
drivers/net/ethernet/ti/davinci_emac.c | 16 +-
drivers/net/ifb.c | 2 +
drivers/net/phy/micrel.c | 9 +-
drivers/net/phy/phylink.c | 2 +-
drivers/net/vmxnet3/vmxnet3_drv.c | 1 -
drivers/net/vrf.c | 28 +-
drivers/net/wireless/ath/ath10k/mac.c | 45 +++-
drivers/net/wireless/ath/ath10k/sdio.c | 5 +-
drivers/net/wireless/ath/ath10k/usb.c | 7 +-
drivers/net/wireless/ath/ath10k/wmi.c | 4 +
drivers/net/wireless/ath/ath10k/wmi.h | 3 +
drivers/net/wireless/ath/ath11k/dbring.c | 16 +-
drivers/net/wireless/ath/ath11k/dp_rx.c | 13 +-
drivers/net/wireless/ath/ath11k/mac.c | 2 +-
drivers/net/wireless/ath/ath11k/qmi.c | 4 +-
drivers/net/wireless/ath/ath11k/reg.c | 11 +-
drivers/net/wireless/ath/ath11k/reg.h | 2 +-
drivers/net/wireless/ath/ath11k/wmi.c | 40 ++-
drivers/net/wireless/ath/ath11k/wmi.h | 3 +-
drivers/net/wireless/ath/ath6kl/usb.c | 7 +-
drivers/net/wireless/ath/ath9k/main.c | 4 +-
.../net/wireless/ath/dfs_pattern_detector.c | 10 +-
drivers/net/wireless/ath/wcn36xx/dxe.c | 49 ++--
drivers/net/wireless/ath/wcn36xx/main.c | 8 +-
drivers/net/wireless/ath/wcn36xx/smd.c | 44 ++-
drivers/net/wireless/ath/wcn36xx/txrx.c | 64 +++--
drivers/net/wireless/ath/wcn36xx/txrx.h | 3 +-
drivers/net/wireless/broadcom/b43/phy_g.c | 2 +-
.../net/wireless/broadcom/b43legacy/radio.c | 2 +-
.../broadcom/brcm80211/brcmfmac/dmi.c | 10 +
.../net/wireless/intel/iwlwifi/mvm/utils.c | 3 +
.../net/wireless/marvell/libertas/if_usb.c | 2 +
.../net/wireless/marvell/libertas_tf/if_usb.c | 2 +
drivers/net/wireless/marvell/mwifiex/11n.c | 5 +-
.../net/wireless/marvell/mwifiex/cfg80211.c | 32 +--
drivers/net/wireless/marvell/mwifiex/pcie.c | 36 ++-
drivers/net/wireless/marvell/mwifiex/usb.c | 16 ++
drivers/net/wireless/marvell/mwl8k.c | 2 +-
.../net/wireless/mediatek/mt76/mt7615/mac.c | 15 +-
.../net/wireless/mediatek/mt76/mt76x02_mac.c | 13 +-
.../net/wireless/mediatek/mt76/mt7915/mcu.c | 8 +-
.../wireless/microchip/wilc1000/cfg80211.c | 3 +-
.../realtek/rtl818x/rtl8187/rtl8225.c | 14 +-
drivers/net/wireless/realtek/rtw88/fw.c | 7 +-
drivers/net/wireless/realtek/rtw88/reg.h | 1 +
drivers/net/wireless/rsi/rsi_91x_core.c | 2 +
drivers/net/wireless/rsi/rsi_91x_hal.c | 10 +-
drivers/net/wireless/rsi/rsi_91x_mac80211.c | 74 ++----
drivers/net/wireless/rsi/rsi_91x_main.c | 17 +-
drivers/net/wireless/rsi/rsi_91x_mgmt.c | 24 +-
drivers/net/wireless/rsi/rsi_91x_sdio.c | 5 +-
drivers/net/wireless/rsi/rsi_91x_usb.c | 5 +-
drivers/net/wireless/rsi/rsi_hal.h | 11 +
drivers/net/wireless/rsi/rsi_main.h | 15 +-
drivers/net/xen-netfront.c | 8 +
drivers/nfc/pn533/pn533.c | 6 +-
drivers/nvme/host/multipath.c | 9 +-
drivers/nvme/host/rdma.c | 2 +
drivers/nvme/target/configfs.c | 2 +
drivers/nvme/target/rdma.c | 24 ++
drivers/nvme/target/tcp.c | 21 +-
drivers/of/unittest.c | 16 +-
drivers/opp/of.c | 2 +-
.../controller/cadence/pcie-cadence-plat.c | 2 +
drivers/pci/controller/dwc/pcie-uniphier.c | 26 +-
drivers/pci/controller/pci-aardvark.c | 251 +++++++++++++++---
drivers/pci/pci-bridge-emul.c | 13 +
drivers/pci/quirks.c | 1 +
drivers/phy/qualcomm/phy-qcom-qusb2.c | 16 +-
drivers/phy/qualcomm/phy-qcom-snps-femto-v2.c | 2 +-
drivers/phy/ti/phy-gmii-sel.c | 2 +
drivers/pinctrl/core.c | 2 +
drivers/pinctrl/pinctrl-equilibrium.c | 7 +-
drivers/pinctrl/renesas/core.c | 2 +-
drivers/platform/x86/thinkpad_acpi.c | 2 +-
drivers/platform/x86/wmi.c | 9 +-
drivers/power/supply/bq27xxx_battery_i2c.c | 3 +-
drivers/power/supply/max17040_battery.c | 2 +
drivers/power/supply/max17042_battery.c | 12 +-
drivers/power/supply/rt5033_battery.c | 2 +-
drivers/regulator/s5m8767.c | 21 +-
drivers/remoteproc/remoteproc_core.c | 8 +-
drivers/reset/reset-socfpga.c | 26 ++
drivers/rtc/rtc-rv3032.c | 4 +-
drivers/s390/char/tape_std.c | 3 +-
drivers/s390/cio/css.c | 4 +-
drivers/s390/cio/device_ops.c | 12 +-
drivers/s390/crypto/ap_queue.c | 2 +
drivers/scsi/csiostor/csio_lnode.c | 2 +-
drivers/scsi/dc395x.c | 1 +
drivers/scsi/pm8001/pm8001_hwi.c | 2 +-
drivers/scsi/qla2xxx/qla_attr.c | 24 +-
drivers/scsi/qla2xxx/qla_dbg.c | 3 +-
drivers/scsi/qla2xxx/qla_gbl.h | 2 -
drivers/scsi/qla2xxx/qla_init.c | 54 +++-
drivers/scsi/qla2xxx/qla_mr.c | 23 --
drivers/scsi/qla2xxx/qla_os.c | 47 ++--
drivers/scsi/qla2xxx/qla_target.c | 14 +-
drivers/scsi/scsi_lib.c | 2 -
drivers/scsi/ufs/ufshcd-pltfrm.c | 6 +-
drivers/scsi/ufs/ufshcd.c | 29 +-
drivers/scsi/ufs/ufshcd.h | 3 +
drivers/soc/fsl/dpaa2-console.c | 1 +
drivers/soc/fsl/dpio/dpio-service.c | 2 +-
drivers/soc/fsl/dpio/qbman-portal.c | 9 +-
drivers/soc/qcom/apr.c | 2 +
drivers/soc/qcom/rpmhpd.c | 21 +-
drivers/soc/tegra/pmc.c | 4 +-
drivers/soundwire/debugfs.c | 2 +-
drivers/spi/spi-bcm-qspi.c | 5 +-
drivers/spi/spi-pl022.c | 5 +-
drivers/spi/spi-rpc-if.c | 4 +-
drivers/staging/ks7010/Kconfig | 3 +
.../staging/media/allegro-dvt/allegro-core.c | 9 +
.../media/atomisp/i2c/atomisp-lm3554.c | 37 ++-
.../staging/media/imx/imx-media-dev-common.c | 2 +
drivers/staging/media/ipu3/ipu3-v4l2.c | 7 +-
drivers/staging/media/rkvdec/rkvdec-h264.c | 5 +-
drivers/staging/media/rkvdec/rkvdec.c | 40 +--
drivers/staging/most/dim2/Makefile | 2 +-
drivers/staging/most/dim2/dim2.c | 24 +-
drivers/staging/most/dim2/sysfs.c | 49 ----
drivers/staging/most/dim2/sysfs.h | 11 -
drivers/tty/serial/8250/8250_dw.c | 2 +-
drivers/tty/serial/8250/8250_port.c | 21 +-
drivers/tty/serial/imx.c | 4 +-
drivers/tty/serial/serial_core.c | 16 +-
drivers/tty/serial/xilinx_uartps.c | 3 +-
drivers/usb/chipidea/core.c | 23 +-
drivers/usb/dwc2/drd.c | 24 +-
drivers/usb/gadget/legacy/hid.c | 4 +-
drivers/usb/host/xhci-hub.c | 3 +-
drivers/usb/host/xhci-pci.c | 16 ++
drivers/usb/misc/iowarrior.c | 8 +-
drivers/usb/musb/Kconfig | 2 +-
drivers/usb/serial/keyspan.c | 15 +-
drivers/usb/typec/Kconfig | 4 +-
drivers/video/backlight/backlight.c | 6 -
drivers/video/fbdev/chipsfb.c | 2 +-
drivers/virtio/virtio_ring.c | 14 +-
drivers/watchdog/Kconfig | 2 +-
drivers/watchdog/f71808e_wdt.c | 4 +-
drivers/watchdog/omap_wdt.c | 6 +-
drivers/xen/balloon.c | 86 ++++--
.../xen/xen-pciback/conf_space_capability.c | 2 +-
fs/btrfs/disk-io.c | 3 +-
fs/btrfs/reflink.c | 2 +-
fs/btrfs/tree-log.c | 4 +-
fs/btrfs/volumes.c | 14 +-
fs/crypto/fscrypt_private.h | 5 +-
fs/crypto/hkdf.c | 11 +-
fs/crypto/keysetup.c | 57 +++-
fs/erofs/decompressor.c | 1 -
fs/exfat/inode.c | 2 +-
fs/ext4/super.c | 9 +-
fs/f2fs/inode.c | 2 +-
fs/f2fs/namei.c | 2 +-
fs/fuse/dev.c | 14 +-
fs/gfs2/glock.c | 24 +-
fs/jfs/jfs_mount.c | 51 ++--
fs/nfs/dir.c | 7 +-
fs/nfs/direct.c | 2 +-
fs/nfs/flexfilelayout/flexfilelayoutdev.c | 4 +-
fs/nfs/nfs4idmap.c | 2 +-
fs/nfs/nfs4proc.c | 15 +-
fs/nfs/pnfs.h | 2 +-
fs/nfs/pnfs_nfs.c | 6 +-
fs/nfs/write.c | 26 +-
fs/ocfs2/file.c | 8 +-
fs/orangefs/dcache.c | 4 +-
fs/proc/stat.c | 4 +-
fs/proc/uptime.c | 14 +-
fs/tracefs/inode.c | 3 +-
include/linux/blkdev.h | 2 -
include/linux/cc_platform.h | 88 ++++++
include/linux/console.h | 2 +
include/linux/ethtool_netlink.h | 3 +
include/linux/filter.h | 1 +
include/linux/kernel_stat.h | 1 +
include/linux/libata.h | 2 +-
include/linux/lsm_hook_defs.h | 14 +-
include/linux/lsm_hooks.h | 14 +-
include/linux/nfs_fs.h | 1 +
include/linux/posix-timers.h | 2 +
include/linux/rpmsg.h | 2 +-
include/linux/sched/task.h | 3 +-
include/linux/sched/task_stack.h | 4 +
include/linux/security.h | 33 ++-
include/linux/seq_file.h | 2 +-
include/linux/tpm.h | 1 +
include/memory/renesas-rpc-if.h | 1 +
include/net/inet_connection_sock.h | 2 +-
include/net/llc.h | 4 +-
include/net/neighbour.h | 12 +-
include/net/sch_generic.h | 4 +
include/net/sock.h | 2 +-
include/net/strparser.h | 16 +-
include/net/tcp.h | 17 +-
include/net/udp.h | 5 +-
include/uapi/linux/ethtool_netlink.h | 4 +-
include/uapi/linux/pci_regs.h | 6 +
kernel/bpf/core.c | 4 +-
kernel/bpf/verifier.c | 4 +-
kernel/cgroup/cgroup.c | 31 ++-
kernel/cgroup/rstat.c | 2 -
kernel/fork.c | 3 +-
kernel/kprobes.c | 3 +-
kernel/locking/lockdep.c | 4 +-
kernel/power/energy_model.c | 23 +-
kernel/power/swap.c | 2 +-
kernel/rcu/rcutorture.c | 48 +++-
kernel/rcu/tasks.h | 3 +-
kernel/rcu/tree_exp.h | 2 +-
kernel/rcu/tree_plugin.h | 8 +-
kernel/sched/core.c | 43 +--
kernel/signal.c | 18 +-
kernel/time/posix-cpu-timers.c | 19 +-
kernel/trace/ring_buffer.c | 5 +
kernel/trace/tracing_map.c | 40 +--
kernel/workqueue.c | 15 +-
lib/decompress_unxz.c | 2 +-
lib/iov_iter.c | 5 +-
lib/xz/xz_dec_lzma2.c | 21 +-
lib/xz/xz_dec_stream.c | 6 +-
mm/memcontrol.c | 27 +-
mm/oom_kill.c | 23 +-
mm/zsmalloc.c | 7 +-
net/8021q/vlan.c | 3 -
net/8021q/vlan_dev.c | 3 +
net/9p/client.c | 2 +
net/bluetooth/sco.c | 9 +-
net/can/j1939/main.c | 7 +
net/can/j1939/transport.c | 6 +
net/core/dev.c | 5 +-
net/core/filter.c | 21 ++
net/core/neighbour.c | 48 ++--
net/core/net-sysfs.c | 55 ++++
net/core/net_namespace.c | 4 +
net/core/stream.c | 3 -
net/core/sysctl_net_core.c | 2 +-
net/dccp/dccp.h | 2 +-
net/dccp/proto.c | 14 +-
net/ethtool/pause.c | 3 +-
net/ipv4/inet_connection_sock.c | 4 +-
net/ipv4/inet_hashtables.c | 2 +-
net/ipv4/proc.c | 2 +-
net/ipv4/tcp.c | 40 ++-
net/ipv4/tcp_bpf.c | 1 -
net/ipv6/addrconf.c | 3 +
net/ipv6/udp.c | 2 +-
net/netfilter/nf_conntrack_proto_udp.c | 7 +-
net/netfilter/nfnetlink_queue.c | 2 +-
net/netfilter/nft_dynset.c | 11 +-
net/rds/ib.c | 10 -
net/rds/ib.h | 6 -
net/rds/ib_cm.c | 128 +++++----
net/rds/ib_recv.c | 18 +-
net/rds/ib_send.c | 8 +
net/rxrpc/rtt.c | 2 +-
net/sched/sch_generic.c | 9 +
net/sched/sch_mq.c | 24 ++
net/sched/sch_mqprio.c | 23 ++
net/sched/sch_taprio.c | 27 +-
net/smc/af_smc.c | 20 +-
net/smc/smc_llc.c | 2 +-
net/strparser/strparser.c | 10 +-
net/sunrpc/addr.c | 40 ++-
net/sunrpc/xprt.c | 28 +-
net/vmw_vsock/af_vsock.c | 2 +
samples/kprobes/kretprobe_example.c | 2 +-
scripts/leaking_addresses.pl | 3 +-
security/apparmor/label.c | 4 +-
security/integrity/evm/evm_main.c | 2 +-
security/security.c | 14 +-
security/selinux/hooks.c | 36 ++-
security/selinux/ss/services.c | 162 ++++++-----
security/smack/smackfs.c | 11 +-
sound/core/oss/mixer_oss.c | 43 ++-
sound/core/timer.c | 13 +-
sound/pci/hda/hda_intel.c | 74 +++---
sound/pci/hda/patch_realtek.c | 82 ++++++
sound/soc/codecs/cs42l42.c | 88 +++---
sound/soc/soc-core.c | 1 +
sound/soc/sof/topology.c | 9 +
sound/synth/emux/emux.c | 2 +-
sound/usb/6fire/comm.c | 2 +-
sound/usb/6fire/firmware.c | 6 +-
sound/usb/format.c | 1 +
sound/usb/line6/driver.c | 14 +-
sound/usb/line6/driver.h | 2 +-
sound/usb/line6/podhd.c | 6 +-
sound/usb/line6/toneport.c | 2 +-
sound/usb/misc/ua101.c | 4 +-
sound/usb/quirks.c | 1 +
tools/bpf/bpftool/prog.c | 16 +-
tools/lib/bpf/bpf_core_read.h | 2 +-
tools/lib/bpf/btf.c | 25 +-
tools/objtool/check.c | 19 +-
tools/perf/util/bpf-event.c | 4 +-
.../selftests/bpf/prog_tests/perf_buffer.c | 4 +-
.../selftests/bpf/prog_tests/sk_lookup.c | 85 ++++--
.../testing/selftests/bpf/progs/strobemeta.h | 4 +-
.../selftests/bpf/progs/test_sk_lookup.c | 62 +++--
tools/testing/selftests/bpf/test_progs.c | 4 +-
.../selftests/bpf/verifier/array_access.c | 2 +-
.../testing/selftests/core/close_range_test.c | 2 +-
tools/testing/selftests/kvm/lib/x86_64/svm.c | 22 +-
.../selftests/kvm/x86_64/mmio_warning_test.c | 2 +-
tools/testing/selftests/net/fcnal-test.sh | 3 +
tools/testing/selftests/net/udpgso_bench_rx.c | 11 +-
587 files changed, 4709 insertions(+), 2317 deletions(-)
create mode 100644 arch/powerpc/include/asm/kvm_guest.h
create mode 100644 arch/x86/kernel/cc_platform.c
delete mode 100644 drivers/staging/most/dim2/sysfs.c
create mode 100644 include/linux/cc_platform.h
--
2.20.1
1
557
From: 沈子俊 <shenzijun(a)kylinos.cn>
kylin inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I4A842?from=project-issue
CVE: NA
-------------------------------------------------------------------------
Add the configuration in arch/x86/configs/openeuler_defconfig
Signed-off-by: 沈子俊 <shenzijun(a)kylinos.cn>
---
arch/x86/configs/openeuler_defconfig | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/x86/configs/openeuler_defconfig b/arch/x86/configs/openeuler_defconfig
index b25d908dc7a1..9b23f113f669 100644
--- a/arch/x86/configs/openeuler_defconfig
+++ b/arch/x86/configs/openeuler_defconfig
@@ -7991,6 +7991,8 @@ CONFIG_CRYPTO_SERPENT_SSE2_X86_64=m
CONFIG_CRYPTO_SERPENT_AVX_X86_64=m
CONFIG_CRYPTO_SERPENT_AVX2_X86_64=m
CONFIG_CRYPTO_SM4=m
+CONFIG_CRYPTO_SM4_AESNI_AVX_X86_64=m
+CONFIG_CRYPTO_SM4_AESNI_AVX2_X86_64=m
CONFIG_CRYPTO_TEA=m
CONFIG_CRYPTO_TWOFISH=m
CONFIG_CRYPTO_TWOFISH_COMMON=m
--
2.30.0
1
0
[PATCH openEuler-5.10 01/54] hugetlb: before freeing hugetlb page set dtor to appropriate value
by Zheng Zengkai 03 Dec '21
by Zheng Zengkai 03 Dec '21
03 Dec '21
From: Mike Kravetz <mike.kravetz(a)oracle.com>
mainline inclusion
from mainline-v5.15-rc1
commit e32d20c0c88b1cd0a44f882c4f0eb2f536363d1b
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I4IGRQ
CVE: NA
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?…
----------------------------------------------------------------------
When removing a hugetlb page from the pool the ref count is set to one (as
the free page has no ref count) and compound page destructor is set to
NULL_COMPOUND_DTOR. Since a subsequent call to free the hugetlb page will
call __free_pages for non-gigantic pages and free_gigantic_page for
gigantic pages the destructor is not used.
However, consider the following race with code taking a speculative
reference on the page:
Thread 0 Thread 1
-------- --------
remove_hugetlb_page
set_page_refcounted(page);
set_compound_page_dtor(page,
NULL_COMPOUND_DTOR);
get_page_unless_zero(page)
__update_and_free_page
__free_pages(page,
huge_page_order(h));
/* Note that __free_pages() will simply drop
the reference to the page. */
put_page(page)
__put_compound_page()
destroy_compound_page
NULL_COMPOUND_DTOR
BUG: kernel NULL pointer
dereference, address:
0000000000000000
To address this race, set the dtor to the normal compound page dtor for
non-gigantic pages. The dtor for gigantic pages does not matter as
gigantic pages are changed from a compound page to 'just a group of pages'
before freeing. Hence, the destructor is not used.
Link: https://lkml.kernel.org/r/20210809184832.18342-4-mike.kravetz@oracle.com
Signed-off-by: Mike Kravetz <mike.kravetz(a)oracle.com>
Reviewed-by: Muchun Song <songmuchun(a)bytedance.com>
Cc: Michal Hocko <mhocko(a)suse.com>
Cc: Oscar Salvador <osalvador(a)suse.de>
Cc: David Hildenbrand <david(a)redhat.com>
Cc: Matthew Wilcox <willy(a)infradead.org>
Cc: Naoya Horiguchi <naoya.horiguchi(a)linux.dev>
Cc: Mina Almasry <almasrymina(a)google.com>
Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds(a)linux-foundation.org>
Signed-off-by: Chen Wandun <chenwandun(a)huawei.com>
Reviewed-by: Kefeng Wang <wangkefeng.wang(a)huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai(a)huawei.com>
---
mm/hugetlb.c | 22 +++++++++++++++++++++-
1 file changed, 21 insertions(+), 1 deletion(-)
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 47dd6b5e0040..6ae2d2e90681 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -1364,8 +1364,28 @@ static void remove_hugetlb_page(struct hstate *h, struct page *page,
h->surplus_huge_pages_node[nid]--;
}
+ /*
+ * Very subtle
+ *
+ * For non-gigantic pages set the destructor to the normal compound
+ * page dtor. This is needed in case someone takes an additional
+ * temporary ref to the page, and freeing is delayed until they drop
+ * their reference.
+ *
+ * For gigantic pages set the destructor to the null dtor. This
+ * destructor will never be called. Before freeing the gigantic
+ * page destroy_compound_gigantic_page will turn the compound page
+ * into a simple group of pages. After this the destructor does not
+ * apply.
+ *
+ * This handles the case where more than one ref is held when and
+ * after update_and_free_page is called.
+ */
set_page_refcounted(page);
- set_compound_page_dtor(page, NULL_COMPOUND_DTOR);
+ if (hstate_is_gigantic(h))
+ set_compound_page_dtor(page, NULL_COMPOUND_DTOR);
+ else
+ set_compound_page_dtor(page, COMPOUND_PAGE_DTOR);
h->nr_huge_pages--;
h->nr_huge_pages_node[nid]--;
--
2.20.1
1
53
On 2021/12/3 17:46, 郑振鹏 wrote:
> 谢工，您好
>
> 在千兆驱动合入4.19内核完成后，我打算先推万兆驱动4.19内核功能升级及同步最新bug修复的补丁，再准备5.10内核千兆驱动补丁。
5.10 会在 3 月份发 22.03 LTS 版本，不打算这个版本带进来吗
>
> BR，
> zhenpeng
>
> ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> ****************************************************************
>
> 郑振鹏(zheng zhenpeng)
>
> 北京网迅科技有限公司杭州分公司 软件工程师
>
> 浙江省杭州市西湖区文三路478号华星时代广场A座507室 310013
>
> Beijing WangXun Technology Co., Ltd. Software Engineer.
>
> Room A507, HuaXing Times Square, No.478 West Wensan Road.
>
> West Lake District, Hangzhou City, 310013 ZHEJIANG, P.R.CHINA.
>
>
>
> Office: +86(0571)89807901-8014
>
> Mobile: +86-13656681762
>
> E-Mail: z <mailto:jianwang@trustnetic.com>henpengzheng(a)net-swift.com
>
> ****************************************************************
>
>
> *发件人：* Xie XiuQi <mailto:xiexiuqi@huawei.com>
> *发送时间：* 2021-12-03 16:15
> *收件人：* 郑振鹏 <mailto:zhenpengzheng@net-swift.com>; QiuLaibin <mailto:qiulaibin@huawei.com>
> *抄送：* yangyingliang(a)huawei.com <mailto:yangyingliang@huawei.com>; kernel(a)openeuler.org <mailto:kernel@openeuler.org>
> *主题：* Re: 【openEuler】Netswift Giga NIC驱动合入openEuler20.03
>
>
> On 2021/12/3 15:17, 郑振鹏 wrote:
> > 您好，
> >
> > 目前我只在x86平台上测试我此次提交的patch，如果完成arm平台测试我再提交新的patch。
>
> 感谢。
>
> Netswift Giga NIC 对 22.03 （5.10内核） 的支持，这个是不是也在做。
>
> >
> > BR，
> > zhenpeng
> >
> >
> ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
> >
> > ****************************************************************
> >
> > 郑振鹏(zheng zhenpeng)
> >
> > 北京网迅科技有限公司杭州分公司 软件工程师
> >
> > 浙江省杭州市西湖区文三路478号华星时代广场A座507室 310013
> >
> > Beijing WangXun Technology Co., Ltd. Software Engineer.
> >
> > Room A507, HuaXing Times Square, No.478 West Wensan Road.
> >
> > West Lake District, Hangzhou City, 310013 ZHEJIANG, P.R.CHINA.
> >
> >
> >
> > Office: +86(0571)89807901-8014
> >
> > Mobile: +86-13656681762
> >
> > E-Mail: z <mailto:jianwang@trustnetic.com>henpengzheng(a)net-swift.com
> >
> > ****************************************************************
> >
> >
> > *发件人：* QiuLaibin <mailto:qiulaibin@huawei.com>
> > *发送时间：* 2021-12-03 15:01
> > *收件人：* zhenpengzheng(a)net-swift.com <mailto:zhenpengzheng@net-swift.com>
> > *抄送：* Xiexiuqi <mailto:xiexiuqi@huawei.com>; yangyingliang(a)huawei.com <mailto:yangyingliang@huawei.com>
> > *主题：* 【openEuler】Netswift Giga NIC驱动合入openEuler20.03
> > pengzheng您好：
> >
> > 非常感谢您的提交！
> >
> > 目前我们正在向版本合入先前您针对openEuler提交的Netswift Giga NIC驱补丁集：
> >
> > [openEuler-1.0-LTS,1/2] net: ngbe: Add Netswift Giga NIC driver
> > [openEuler-1.0-LTS,2/2] x86/config: Enable netswift Giga NIC driver for x86
> >
> > 但鉴于您在编译config只在X86的config中打开，因此我们需要确认是否该驱动只能支持X86平台；arm上是否可以打开支持，若arm相关的config误打开是否会引入问题。
> >
> > best regard
> > Laibin Qiu
> >
> >
> >
>
1
0
TC 议题申报：
议题：openEuler 22.03 LTS ARM64 版本(5.10 内核）内核页大小及支持CPU规格决策：
决策点1：openEuler 22.03 LTS 是否默认采用 4K 页表 （配合 48 BIT VA/PA)
决策点2：openEuler 22.03 LTS 如果默认采用 4K 页表，是否需要在单独出 64K 页表的 kernel 包。
决策点3：openEuler 22.03 LTS 支持最大 CPU 数：NR_CPUS=4096, NODES 支持 128.
（20.03 原版本配置：64K, 48 BIT VA/PA, NR_CPUS 1024, NODES 16)
之前的讨论链接：
https://gitee.com/openeuler/kernel/issues/I4HDHZ
理由1：从讨论看，64K 兼容性问题比较多，且业界OS多采用4K，方便驱动及上层软件在兼容性认证，
也利于支撑更多的使用场景。性能上，64K 优势场景，可以采用大页，或者单独 64K 版本支持。
理由2：52 BIT 大内存支持，需要 64K 页，4K 页最大支持 48 BIT VA/PA, 256T 内存空间。如果要支
持更大 PB 级内存，需要 64K。
理由3：从未来几年诉求，和业界OS支持规格来看，CPU 数目增加是趋势，从兼容性和规格考虑，
NR_CPUS 与业界OS最大的 4096 一致。当前4路飞腾S2500 最大 32 个 nodes，为满足未来几年
的演进诉求，NODES 数拟最大支持 128.
On 2021/12/3 14:35, yangcong wrote:
>
>
> 申报议题：
> 议题5：License风险识别系统引入openEuler社区 - 杨聪 <yangcong_hit(a)163.com>
> 议题6：针对openEuler社区repo不同的类型（内容），选择license的策略 - 杨聪 <yangcong_hit(a)163.com>
> 在2021年12月1日 09:34，Hufeng (Solar, Euler)<solar.hu(a)huawei.com> 写道：
> 当前已有议题如下
> 议题1：release management sig工作计划 - 胡峰（延期到本次例会）
> 议题2：openEuler 新技术领域规划讨论：Edge – 刘寿永，Embedded – 任慰 （延期到本次例会）
> 议题3：NestOS的社区资源支持与立项讨论：杜奕威 <duyiwei(a)kylinos.cn>（延期到本次例会）
> a. 如何从openEuler官网下载NestOS镜像
> b. 提供相关资源以部署nestos所需要的自动更新环境
> c. 如何立项使更多的人参与到NestOS中
> 议题4： Greenplum白皮书评审-270162781(a)qq.com - bo zhao
> 上会前请确认会议遗留问题闭环情况
>
>
> -----Original Message-----
> From: Hufeng (Solar, Euler)
> Sent: Tuesday, November 30, 2021 2:45 PM
> To: tc(a)openeuler.org; 'dev(a)openeuler.org' <dev(a)openeuler.org>
> Subject: [TC]议题收集，请给位议题申报人按时与会，谢谢。RE: [Dev] openEuler 技术委员会例会
>
> 当前已有议题如下
> 议题1：release management sig工作计划 - 胡峰（延期到本次例会）
> 议题2：openEuler 新技术领域规划讨论：Edge – 刘寿永，Embedded – 任慰 （延期到本次例会）
> 议题3：NestOS的社区资源支持与立项讨论：杜奕威 <duyiwei(a)kylinos.cn>（延期到本次例会）
> a. 如何从openEuler官网下载NestOS镜像
> b. 提供相关资源以部署nestos所需要的自动更新环境
> c. 如何立项使更多的人参与到NestOS中
>
> -----Original Message-----
> From: openEuler conference [mailto:public@openeuler.org]
> Sent: Tuesday, November 30, 2021 2:35 PM
> Subject: [Dev] openEuler 技术委员会例会
>
> 您好！
>
> TC SIG 邀请您参加 2021-12-01 10:00 召开的ZOOM会议(自动录制)
>
> 会议主题：openEuler 技术委员会例会
>
> 会议链接：https://us06web.zoom.us/j/82159612220?pwd=ZlNxWkEwY1MyUlQ3SmtFNmNEVGtwQT09
>
> 温馨提醒：建议接入会议后修改参会人的姓名，也可以使用您在gitee.com的ID
>
> 更多资讯尽在：https://openeuler.org/zh/
>
>
>
>
> Hello!
>
> openEuler TC SIG invites you to attend the ZOOM conference(auto recording) will be held at 2021-12-01 10:00,
>
> The subject of the conference is openEuler 技术委员会例会,
>
> You can join the meeting at https://us06web.zoom.us/j/82159612220?pwd=ZlNxWkEwY1MyUlQ3SmtFNmNEVGtwQT09.
>
> Note: You are advised to change the participant name after joining the conference or use your ID at gitee.com.
>
> More information: https://openeuler.org/en/
>
> _______________________________________________
> Dev mailing list -- dev(a)openeuler.org
> To unsubscribe send an email to dev-leave(a)openeuler.org
> _______________________________________________
> Dev mailing list -- dev(a)openeuler.org
> To unsubscribe send an email to dev-leave(a)openeuler.org
> _______________________________________________
> Tc mailing list -- tc(a)openeuler.org
> To unsubscribe send an email to tc-leave(a)openeuler.org
>
3
2
On 2021/12/3 15:17, 郑振鹏 wrote:
> 您好，
>
> 目前我只在x86平台上测试我此次提交的patch，如果完成arm平台测试我再提交新的patch。
感谢。
Netswift Giga NIC 对 22.03 （5.10内核） 的支持，这个是不是也在做。
>
> BR，
> zhenpeng
>
> ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> ****************************************************************
>
> 郑振鹏(zheng zhenpeng)
>
> 北京网迅科技有限公司杭州分公司 软件工程师
>
> 浙江省杭州市西湖区文三路478号华星时代广场A座507室 310013
>
> Beijing WangXun Technology Co., Ltd. Software Engineer.
>
> Room A507, HuaXing Times Square, No.478 West Wensan Road.
>
> West Lake District, Hangzhou City, 310013 ZHEJIANG, P.R.CHINA.
>
>
>
> Office: +86(0571)89807901-8014
>
> Mobile: +86-13656681762
>
> E-Mail: z <mailto:jianwang@trustnetic.com>henpengzheng(a)net-swift.com
>
> ****************************************************************
>
>
> *发件人：* QiuLaibin <mailto:qiulaibin@huawei.com>
> *发送时间：* 2021-12-03 15:01
> *收件人：* zhenpengzheng(a)net-swift.com <mailto:zhenpengzheng@net-swift.com>
> *抄送：* Xiexiuqi <mailto:xiexiuqi@huawei.com>; yangyingliang(a)huawei.com <mailto:yangyingliang@huawei.com>
> *主题：* 【openEuler】Netswift Giga NIC驱动合入openEuler20.03
> pengzheng您好：
>
> 非常感谢您的提交！
>
> 目前我们正在向版本合入先前您针对openEuler提交的Netswift Giga NIC驱补丁集：
>
> [openEuler-1.0-LTS,1/2] net: ngbe: Add Netswift Giga NIC driver
> [openEuler-1.0-LTS,2/2] x86/config: Enable netswift Giga NIC driver for x86
>
> 但鉴于您在编译config只在X86的config中打开，因此我们需要确认是否该驱动只能支持X86平台；arm上是否可以打开支持，若arm相关的config误打开是否会引入问题。
>
> best regard
> Laibin Qiu
>
>
>
1
0
[PATCH openEuler-1.0-LTS] config: disable CONFIG_NGBE by default in hulk_defconfig
by Yang Yingliang 03 Dec '21
by Yang Yingliang 03 Dec '21
03 Dec '21
driver inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I4C4XW?from=project-issue
CVE: NA
---------------------------------------
Disable CONFIG_NGBE by default CONFIG_NGBE on ARM64.
Reviewed-by: Cheng Jian <cj.chengjian(a)huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com>
---
arch/arm64/configs/hulk_defconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm64/configs/hulk_defconfig b/arch/arm64/configs/hulk_defconfig
index fdf628f1fa028..e80f4b7fde56d 100644
--- a/arch/arm64/configs/hulk_defconfig
+++ b/arch/arm64/configs/hulk_defconfig
@@ -2491,6 +2491,7 @@ CONFIG_ICE=m
CONFIG_FM10K=m
CONFIG_NET_VENDOR_NETSWIFT=y
CONFIG_TXGBE=m
+# CONFIG_NGBE is not set
# CONFIG_JME is not set
# CONFIG_NET_VENDOR_MARVELL is not set
CONFIG_NET_VENDOR_MELLANOX=y
--
2.25.1
1
0