Thanks for your patch.
But your patch set seems incomplete, not all the 107 patches have been received by the maillist.
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/2021/12/?...
please resend your patch set.
在 2021/12/8 13:42, Yin Xiujiang 写道:
From: Konstantin Komarov almaz.alexandrovich@paragon-software.com
mainline inclusion from mainline-v5.15 commit 4534a70b7056fd4b9a1c6db5a4ce3c98546b291e category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I4G67J?from=project-issue CVE: NA
This adds headers and misc files
Signed-off-by: Konstantin Komarov almaz.alexandrovich@paragon-software.com Signed-off-by: Yin Xiujiang yinxiujiang@kylinos.cn
fs/ntfs3/debug.h | 64 +++ fs/ntfs3/ntfs.h | 1238 ++++++++++++++++++++++++++++++++++++++++++++ fs/ntfs3/ntfs_fs.h | 1092 ++++++++++++++++++++++++++++++++++++++ fs/ntfs3/upcase.c | 105 ++++ 4 files changed, 2499 insertions(+) create mode 100644 fs/ntfs3/debug.h create mode 100644 fs/ntfs3/ntfs.h create mode 100644 fs/ntfs3/ntfs_fs.h create mode 100644 fs/ntfs3/upcase.c
diff --git a/fs/ntfs3/debug.h b/fs/ntfs3/debug.h new file mode 100644 index 000000000000..dfaa4c79dc6d --- /dev/null +++ b/fs/ntfs3/debug.h @@ -0,0 +1,64 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/*
- Copyright (C) 2019-2021 Paragon Software GmbH, All rights reserved.
- useful functions for debuging
- */
+// clang-format off +#ifndef Add2Ptr +#define Add2Ptr(P, I) ((void *)((u8 *)(P) + (I))) +#define PtrOffset(B, O) ((size_t)((size_t)(O) - (size_t)(B))) +#endif
+#define QuadAlign(n) (((n) + 7u) & (~7u)) +#define IsQuadAligned(n) (!((size_t)(n)&7u)) +#define Quad2Align(n) (((n) + 15u) & (~15u)) +#define IsQuad2Aligned(n) (!((size_t)(n)&15u)) +#define Quad4Align(n) (((n) + 31u) & (~31u)) +#define IsSizeTAligned(n) (!((size_t)(n) & (sizeof(size_t) - 1))) +#define DwordAlign(n) (((n) + 3u) & (~3u)) +#define IsDwordAligned(n) (!((size_t)(n)&3u)) +#define WordAlign(n) (((n) + 1u) & (~1u)) +#define IsWordAligned(n) (!((size_t)(n)&1u))
+#ifdef CONFIG_PRINTK +__printf(2, 3) +void ntfs_printk(const struct super_block *sb, const char *fmt, ...); +__printf(2, 3) +void ntfs_inode_printk(struct inode *inode, const char *fmt, ...); +#else +static inline __printf(2, 3) +void ntfs_printk(const struct super_block *sb, const char *fmt, ...) +{ +}
+static inline __printf(2, 3) +void ntfs_inode_printk(struct inode *inode, const char *fmt, ...) +{ +} +#endif
+/*
- Logging macros ( thanks Joe Perches joe@perches.com for implementation )
- */
+#define ntfs_err(sb, fmt, ...) ntfs_printk(sb, KERN_ERR fmt, ##__VA_ARGS__) +#define ntfs_warn(sb, fmt, ...) ntfs_printk(sb, KERN_WARNING fmt, ##__VA_ARGS__) +#define ntfs_info(sb, fmt, ...) ntfs_printk(sb, KERN_INFO fmt, ##__VA_ARGS__) +#define ntfs_notice(sb, fmt, ...) \
- ntfs_printk(sb, KERN_NOTICE fmt, ##__VA_ARGS__)
+#define ntfs_inode_err(inode, fmt, ...) \
- ntfs_inode_printk(inode, KERN_ERR fmt, ##__VA_ARGS__)
+#define ntfs_inode_warn(inode, fmt, ...) \
- ntfs_inode_printk(inode, KERN_WARNING fmt, ##__VA_ARGS__)
+#define ntfs_malloc(s) kmalloc(s, GFP_NOFS) +#define ntfs_zalloc(s) kzalloc(s, GFP_NOFS) +#define ntfs_vmalloc(s) kvmalloc(s, GFP_KERNEL) +#define ntfs_free(p) kfree(p) +#define ntfs_vfree(p) kvfree(p) +#define ntfs_memdup(src, len) kmemdup(src, len, GFP_NOFS) +// clang-format on diff --git a/fs/ntfs3/ntfs.h b/fs/ntfs3/ntfs.h new file mode 100644 index 000000000000..40398e6c39c9 --- /dev/null +++ b/fs/ntfs3/ntfs.h @@ -0,0 +1,1238 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/*
- Copyright (C) 2019-2021 Paragon Software GmbH, All rights reserved.
- on-disk ntfs structs
- */
+// clang-format off
+/* TODO:
- Check 4K mft record and 512 bytes cluster
- */
+/*
- Activate this define to use binary search in indexes
- */
+#define NTFS3_INDEX_BINARY_SEARCH
+/*
- Check each run for marked clusters
- */
+#define NTFS3_CHECK_FREE_CLST
+#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
+/*
- Activate to use 64 bit clusters instead of 32 bits in ntfs.sys
- Logical and virtual cluster number
- If needed, may be redefined to use 64 bit value
- */
+//#define CONFIG_NTFS3_64BIT_CLUSTER
+#define NTFS_LZNT_MAX_CLUSTER 4096 +#define NTFS_LZNT_CUNIT 4 +#define NTFS_LZNT_CLUSTERS (1u<<NTFS_LZNT_CUNIT)
+struct GUID {
- __le32 Data1;
- __le16 Data2;
- __le16 Data3;
- u8 Data4[8];
+};
+/*
- this struct repeats layout of ATTR_FILE_NAME
- at offset 0x40
- it used to store global constants NAME_MFT/NAME_MIRROR...
- most constant names are shorter than 10
- */
+struct cpu_str {
- u8 len;
- u8 unused;
- u16 name[10];
+};
+struct le_str {
- u8 len;
- u8 unused;
- __le16 name[];
+};
+static_assert(SECTOR_SHIFT == 9);
+#ifdef CONFIG_NTFS3_64BIT_CLUSTER +typedef u64 CLST; +static_assert(sizeof(size_t) == 8); +#else +typedef u32 CLST; +#endif
+#define SPARSE_LCN64 ((u64)-1) +#define SPARSE_LCN ((CLST)-1) +#define RESIDENT_LCN ((CLST)-2) +#define COMPRESSED_LCN ((CLST)-3)
+#define COMPRESSION_UNIT 4 +#define COMPRESS_MAX_CLUSTER 0x1000 +#define MFT_INCREASE_CHUNK 1024
+enum RECORD_NUM {
- MFT_REC_MFT = 0,
- MFT_REC_MIRR = 1,
- MFT_REC_LOG = 2,
- MFT_REC_VOL = 3,
- MFT_REC_ATTR = 4,
- MFT_REC_ROOT = 5,
- MFT_REC_BITMAP = 6,
- MFT_REC_BOOT = 7,
- MFT_REC_BADCLUST = 8,
- //MFT_REC_QUOTA = 9,
- MFT_REC_SECURE = 9, // NTFS 3.0
- MFT_REC_UPCASE = 10,
- MFT_REC_EXTEND = 11, // NTFS 3.0
- MFT_REC_RESERVED = 11,
- MFT_REC_FREE = 16,
- MFT_REC_USER = 24,
+};
+enum ATTR_TYPE {
- ATTR_ZERO = cpu_to_le32(0x00),
- ATTR_STD = cpu_to_le32(0x10),
- ATTR_LIST = cpu_to_le32(0x20),
- ATTR_NAME = cpu_to_le32(0x30),
- // ATTR_VOLUME_VERSION on Nt4
- ATTR_ID = cpu_to_le32(0x40),
- ATTR_SECURE = cpu_to_le32(0x50),
- ATTR_LABEL = cpu_to_le32(0x60),
- ATTR_VOL_INFO = cpu_to_le32(0x70),
- ATTR_DATA = cpu_to_le32(0x80),
- ATTR_ROOT = cpu_to_le32(0x90),
- ATTR_ALLOC = cpu_to_le32(0xA0),
- ATTR_BITMAP = cpu_to_le32(0xB0),
- // ATTR_SYMLINK on Nt4
- ATTR_REPARSE = cpu_to_le32(0xC0),
- ATTR_EA_INFO = cpu_to_le32(0xD0),
- ATTR_EA = cpu_to_le32(0xE0),
- ATTR_PROPERTYSET = cpu_to_le32(0xF0),
- ATTR_LOGGED_UTILITY_STREAM = cpu_to_le32(0x100),
- ATTR_END = cpu_to_le32(0xFFFFFFFF)
+};
+static_assert(sizeof(enum ATTR_TYPE) == 4);
+enum FILE_ATTRIBUTE {
- FILE_ATTRIBUTE_READONLY = cpu_to_le32(0x00000001),
- FILE_ATTRIBUTE_HIDDEN = cpu_to_le32(0x00000002),
- FILE_ATTRIBUTE_SYSTEM = cpu_to_le32(0x00000004),
- FILE_ATTRIBUTE_ARCHIVE = cpu_to_le32(0x00000020),
- FILE_ATTRIBUTE_DEVICE = cpu_to_le32(0x00000040),
- FILE_ATTRIBUTE_TEMPORARY = cpu_to_le32(0x00000100),
- FILE_ATTRIBUTE_SPARSE_FILE = cpu_to_le32(0x00000200),
- FILE_ATTRIBUTE_REPARSE_POINT = cpu_to_le32(0x00000400),
- FILE_ATTRIBUTE_COMPRESSED = cpu_to_le32(0x00000800),
- FILE_ATTRIBUTE_OFFLINE = cpu_to_le32(0x00001000),
- FILE_ATTRIBUTE_NOT_CONTENT_INDEXED = cpu_to_le32(0x00002000),
- FILE_ATTRIBUTE_ENCRYPTED = cpu_to_le32(0x00004000),
- FILE_ATTRIBUTE_VALID_FLAGS = cpu_to_le32(0x00007fb7),
- FILE_ATTRIBUTE_DIRECTORY = cpu_to_le32(0x10000000),
+};
+static_assert(sizeof(enum FILE_ATTRIBUTE) == 4);
+extern const struct cpu_str NAME_MFT; +extern const struct cpu_str NAME_MIRROR; +extern const struct cpu_str NAME_LOGFILE; +extern const struct cpu_str NAME_VOLUME; +extern const struct cpu_str NAME_ATTRDEF; +extern const struct cpu_str NAME_ROOT; +extern const struct cpu_str NAME_BITMAP; +extern const struct cpu_str NAME_BOOT; +extern const struct cpu_str NAME_BADCLUS; +extern const struct cpu_str NAME_QUOTA; +extern const struct cpu_str NAME_SECURE; +extern const struct cpu_str NAME_UPCASE; +extern const struct cpu_str NAME_EXTEND; +extern const struct cpu_str NAME_OBJID; +extern const struct cpu_str NAME_REPARSE; +extern const struct cpu_str NAME_USNJRNL;
+extern const __le16 I30_NAME[4]; +extern const __le16 SII_NAME[4]; +extern const __le16 SDH_NAME[4]; +extern const __le16 SO_NAME[2]; +extern const __le16 SQ_NAME[2]; +extern const __le16 SR_NAME[2];
+extern const __le16 BAD_NAME[4]; +extern const __le16 SDS_NAME[4]; +extern const __le16 WOF_NAME[17]; /* WofCompressedData */
+/* MFT record number structure */ +struct MFT_REF {
- __le32 low; // The low part of the number
- __le16 high; // The high part of the number
- __le16 seq; // The sequence number of MFT record
+};
+static_assert(sizeof(__le64) == sizeof(struct MFT_REF));
+static inline CLST ino_get(const struct MFT_REF *ref) +{ +#ifdef CONFIG_NTFS3_64BIT_CLUSTER
- return le32_to_cpu(ref->low) | ((u64)le16_to_cpu(ref->high) << 32);
+#else
- return le32_to_cpu(ref->low);
+#endif +}
+struct NTFS_BOOT {
- u8 jump_code[3]; // 0x00: Jump to boot code
- u8 system_id[8]; // 0x03: System ID, equals "NTFS "
- // NOTE: this member is not aligned(!)
- // bytes_per_sector[0] must be 0
- // bytes_per_sector[1] must be multiplied by 256
- u8 bytes_per_sector[2]; // 0x0B: Bytes per sector
- u8 sectors_per_clusters;// 0x0D: Sectors per cluster
- u8 unused1[7];
- u8 media_type; // 0x15: Media type (0xF8 - harddisk)
- u8 unused2[2];
- __le16 sct_per_track; // 0x18: number of sectors per track
- __le16 heads; // 0x1A: number of heads per cylinder
- __le32 hidden_sectors; // 0x1C: number of 'hidden' sectors
- u8 unused3[4];
- u8 bios_drive_num; // 0x24: BIOS drive number =0x80
- u8 unused4;
- u8 signature_ex; // 0x26: Extended BOOT signature =0x80
- u8 unused5;
- __le64 sectors_per_volume;// 0x28: size of volume in sectors
- __le64 mft_clst; // 0x30: first cluster of $MFT
- __le64 mft2_clst; // 0x38: first cluster of $MFTMirr
- s8 record_size; // 0x40: size of MFT record in clusters(sectors)
- u8 unused6[3];
- s8 index_size; // 0x44: size of INDX record in clusters(sectors)
- u8 unused7[3];
- __le64 serial_num; // 0x48: Volume serial number
- __le32 check_sum; // 0x50: Simple additive checksum of all
// of the u32's which precede the 'check_sum'- u8 boot_code[0x200 - 0x50 - 2 - 4]; // 0x54:
- u8 boot_magic[2]; // 0x1FE: Boot signature =0x55 + 0xAA
+};
+static_assert(sizeof(struct NTFS_BOOT) == 0x200);
+enum NTFS_SIGNATURE {
- NTFS_FILE_SIGNATURE = cpu_to_le32(0x454C4946), // 'FILE'
- NTFS_INDX_SIGNATURE = cpu_to_le32(0x58444E49), // 'INDX'
- NTFS_CHKD_SIGNATURE = cpu_to_le32(0x444B4843), // 'CHKD'
- NTFS_RSTR_SIGNATURE = cpu_to_le32(0x52545352), // 'RSTR'
- NTFS_RCRD_SIGNATURE = cpu_to_le32(0x44524352), // 'RCRD'
- NTFS_BAAD_SIGNATURE = cpu_to_le32(0x44414142), // 'BAAD'
- NTFS_HOLE_SIGNATURE = cpu_to_le32(0x454C4F48), // 'HOLE'
- NTFS_FFFF_SIGNATURE = cpu_to_le32(0xffffffff),
+};
+static_assert(sizeof(enum NTFS_SIGNATURE) == 4);
+/* MFT Record header structure */ +struct NTFS_RECORD_HEADER {
- /* Record magic number, equals 'FILE'/'INDX'/'RSTR'/'RCRD' */
- enum NTFS_SIGNATURE sign; // 0x00:
- __le16 fix_off; // 0x04:
- __le16 fix_num; // 0x06:
- __le64 lsn; // 0x08: Log file sequence number
+};
+static_assert(sizeof(struct NTFS_RECORD_HEADER) == 0x10);
+static inline int is_baad(const struct NTFS_RECORD_HEADER *hdr) +{
- return hdr->sign == NTFS_BAAD_SIGNATURE;
+}
+/* Possible bits in struct MFT_REC.flags */ +enum RECORD_FLAG {
- RECORD_FLAG_IN_USE = cpu_to_le16(0x0001),
- RECORD_FLAG_DIR = cpu_to_le16(0x0002),
- RECORD_FLAG_SYSTEM = cpu_to_le16(0x0004),
- RECORD_FLAG_UNKNOWN = cpu_to_le16(0x0008),
+};
+/* MFT Record structure */ +struct MFT_REC {
- struct NTFS_RECORD_HEADER rhdr; // 'FILE'
- __le16 seq; // 0x10: Sequence number for this record
- __le16 hard_links; // 0x12: The number of hard links to record
- __le16 attr_off; // 0x14: Offset to attributes
- __le16 flags; // 0x16: See RECORD_FLAG
- __le32 used; // 0x18: The size of used part
- __le32 total; // 0x1C: Total record size
- struct MFT_REF parent_ref; // 0x20: Parent MFT record
- __le16 next_attr_id; // 0x28: The next attribute Id
- __le16 res; // 0x2A: High part of mft record?
- __le32 mft_record; // 0x2C: Current mft record number
- __le16 fixups[]; // 0x30:
+};
+#define MFTRECORD_FIXUP_OFFSET_1 offsetof(struct MFT_REC, res) +#define MFTRECORD_FIXUP_OFFSET_3 offsetof(struct MFT_REC, fixups)
+static_assert(MFTRECORD_FIXUP_OFFSET_1 == 0x2A); +static_assert(MFTRECORD_FIXUP_OFFSET_3 == 0x30);
+static inline bool is_rec_base(const struct MFT_REC *rec) +{
- const struct MFT_REF *r = &rec->parent_ref;
- return !r->low && !r->high && !r->seq;
+}
+static inline bool is_mft_rec5(const struct MFT_REC *rec) +{
- return le16_to_cpu(rec->rhdr.fix_off) >=
offsetof(struct MFT_REC, fixups);+}
+static inline bool is_rec_inuse(const struct MFT_REC *rec) +{
- return rec->flags & RECORD_FLAG_IN_USE;
+}
+static inline bool clear_rec_inuse(struct MFT_REC *rec) +{
- return rec->flags &= ~RECORD_FLAG_IN_USE;
+}
+/* Possible values of ATTR_RESIDENT.flags */ +#define RESIDENT_FLAG_INDEXED 0x01
+struct ATTR_RESIDENT {
- __le32 data_size; // 0x10: The size of data
- __le16 data_off; // 0x14: Offset to data
- u8 flags; // 0x16: resident flags ( 1 - indexed )
- u8 res; // 0x17:
+}; // sizeof() = 0x18
+struct ATTR_NONRESIDENT {
- __le64 svcn; // 0x10: Starting VCN of this segment
- __le64 evcn; // 0x18: End VCN of this segment
- __le16 run_off; // 0x20: Offset to packed runs
- // Unit of Compression size for this stream, expressed
- // as a log of the cluster size.
- //
- // 0 means file is not compressed
- // 1, 2, 3, and 4 are potentially legal values if the
- // stream is compressed, however the implementation
- // may only choose to use 4, or possibly 3. Note
- // that 4 means cluster size time 16. If convenient
- // the implementation may wish to accept a
- // reasonable range of legal values here (1-5?),
- // even if the implementation only generates
- // a smaller set of values itself.
- u8 c_unit; // 0x22
- u8 res1[5]; // 0x23:
- __le64 alloc_size; // 0x28: The allocated size of attribute in bytes
// (multiple of cluster size)- __le64 data_size; // 0x30: The size of attribute in bytes <= alloc_size
- __le64 valid_size; // 0x38: The size of valid part in bytes <= data_size
- __le64 total_size; // 0x40: The sum of the allocated clusters for a file
// (present only for the first segment (0 == vcn)// of compressed attribute)+}; // sizeof()=0x40 or 0x48 (if compressed)
+/* Possible values of ATTRIB.flags: */ +#define ATTR_FLAG_COMPRESSED cpu_to_le16(0x0001) +#define ATTR_FLAG_COMPRESSED_MASK cpu_to_le16(0x00FF) +#define ATTR_FLAG_ENCRYPTED cpu_to_le16(0x4000) +#define ATTR_FLAG_SPARSED cpu_to_le16(0x8000)
+struct ATTRIB {
- enum ATTR_TYPE type; // 0x00: The type of this attribute
- __le32 size; // 0x04: The size of this attribute
- u8 non_res; // 0x08: Is this attribute non-resident ?
- u8 name_len; // 0x09: This attribute name length
- __le16 name_off; // 0x0A: Offset to the attribute name
- __le16 flags; // 0x0C: See ATTR_FLAG_XXX
- __le16 id; // 0x0E: unique id (per record)
- union {
struct ATTR_RESIDENT res; // 0x10struct ATTR_NONRESIDENT nres; // 0x10- };
+};
+/* Define attribute sizes */ +#define SIZEOF_RESIDENT 0x18 +#define SIZEOF_NONRESIDENT_EX 0x48 +#define SIZEOF_NONRESIDENT 0x40
+#define SIZEOF_RESIDENT_LE cpu_to_le16(0x18) +#define SIZEOF_NONRESIDENT_EX_LE cpu_to_le16(0x48) +#define SIZEOF_NONRESIDENT_LE cpu_to_le16(0x40)
+static inline u64 attr_ondisk_size(const struct ATTRIB *attr) +{
- return attr->non_res ? ((attr->flags &
(ATTR_FLAG_COMPRESSED | ATTR_FLAG_SPARSED)) ?le64_to_cpu(attr->nres.total_size) :le64_to_cpu(attr->nres.alloc_size)) :QuadAlign(le32_to_cpu(attr->res.data_size));+}
+static inline u64 attr_size(const struct ATTRIB *attr) +{
- return attr->non_res ? le64_to_cpu(attr->nres.data_size) :
le32_to_cpu(attr->res.data_size);+}
+static inline bool is_attr_encrypted(const struct ATTRIB *attr) +{
- return attr->flags & ATTR_FLAG_ENCRYPTED;
+}
+static inline bool is_attr_sparsed(const struct ATTRIB *attr) +{
- return attr->flags & ATTR_FLAG_SPARSED;
+}
+static inline bool is_attr_compressed(const struct ATTRIB *attr) +{
- return attr->flags & ATTR_FLAG_COMPRESSED;
+}
+static inline bool is_attr_ext(const struct ATTRIB *attr) +{
- return attr->flags & (ATTR_FLAG_SPARSED | ATTR_FLAG_COMPRESSED);
+}
+static inline bool is_attr_indexed(const struct ATTRIB *attr) +{
- return !attr->non_res && (attr->res.flags & RESIDENT_FLAG_INDEXED);
+}
+static inline __le16 const *attr_name(const struct ATTRIB *attr) +{
- return Add2Ptr(attr, le16_to_cpu(attr->name_off));
+}
+static inline u64 attr_svcn(const struct ATTRIB *attr) +{
- return attr->non_res ? le64_to_cpu(attr->nres.svcn) : 0;
+}
+/* the size of resident attribute by its resident size */ +#define BYTES_PER_RESIDENT(b) (0x18 + (b))
+static_assert(sizeof(struct ATTRIB) == 0x48); +static_assert(sizeof(((struct ATTRIB *)NULL)->res) == 0x08); +static_assert(sizeof(((struct ATTRIB *)NULL)->nres) == 0x38);
+static inline void *resident_data_ex(const struct ATTRIB *attr, u32 datasize) +{
- u32 asize, rsize;
- u16 off;
- if (attr->non_res)
return NULL;- asize = le32_to_cpu(attr->size);
- off = le16_to_cpu(attr->res.data_off);
- if (asize < datasize + off)
return NULL;- rsize = le32_to_cpu(attr->res.data_size);
- if (rsize < datasize)
return NULL;- return Add2Ptr(attr, off);
+}
+static inline void *resident_data(const struct ATTRIB *attr) +{
- return Add2Ptr(attr, le16_to_cpu(attr->res.data_off));
+}
+static inline void *attr_run(const struct ATTRIB *attr) +{
- return Add2Ptr(attr, le16_to_cpu(attr->nres.run_off));
+}
+/* Standard information attribute (0x10) */ +struct ATTR_STD_INFO {
- __le64 cr_time; // 0x00: File creation file
- __le64 m_time; // 0x08: File modification time
- __le64 c_time; // 0x10: Last time any attribute was modified
- __le64 a_time; // 0x18: File last access time
- enum FILE_ATTRIBUTE fa; // 0x20: Standard DOS attributes & more
- __le32 max_ver_num; // 0x24: Maximum Number of Versions
- __le32 ver_num; // 0x28: Version Number
- __le32 class_id; // 0x2C: Class Id from bidirectional Class Id index
+};
+static_assert(sizeof(struct ATTR_STD_INFO) == 0x30);
+#define SECURITY_ID_INVALID 0x00000000 +#define SECURITY_ID_FIRST 0x00000100
+struct ATTR_STD_INFO5 {
- __le64 cr_time; // 0x00: File creation file
- __le64 m_time; // 0x08: File modification time
- __le64 c_time; // 0x10: Last time any attribute was modified
- __le64 a_time; // 0x18: File last access time
- enum FILE_ATTRIBUTE fa; // 0x20: Standard DOS attributes & more
- __le32 max_ver_num; // 0x24: Maximum Number of Versions
- __le32 ver_num; // 0x28: Version Number
- __le32 class_id; // 0x2C: Class Id from bidirectional Class Id index
- __le32 owner_id; // 0x30: Owner Id of the user owning the file.
- __le32 security_id; // 0x34: The Security Id is a key in the $SII Index and $SDS
- __le64 quota_charge; // 0x38:
- __le64 usn; // 0x40: Last Update Sequence Number of the file. This is a direct
// index into the file $UsnJrnl. If zero, the USN Journal is// disabled.+};
+static_assert(sizeof(struct ATTR_STD_INFO5) == 0x48);
+/* attribute list entry structure (0x20) */ +struct ATTR_LIST_ENTRY {
- enum ATTR_TYPE type; // 0x00: The type of attribute
- __le16 size; // 0x04: The size of this record
- u8 name_len; // 0x06: The length of attribute name
- u8 name_off; // 0x07: The offset to attribute name
- __le64 vcn; // 0x08: Starting VCN of this attribute
- struct MFT_REF ref; // 0x10: MFT record number with attribute
- __le16 id; // 0x18: struct ATTRIB ID
- __le16 name[3]; // 0x1A: Just to align. To get real name can use bNameOffset
+}; // sizeof(0x20)
+static_assert(sizeof(struct ATTR_LIST_ENTRY) == 0x20);
+static inline u32 le_size(u8 name_len) +{
- return QuadAlign(offsetof(struct ATTR_LIST_ENTRY, name) +
name_len * sizeof(short));+}
+/* returns 0 if 'attr' has the same type and name */ +static inline int le_cmp(const struct ATTR_LIST_ENTRY *le,
const struct ATTRIB *attr)+{
- return le->type != attr->type || le->name_len != attr->name_len ||
(!le->name_len &&memcmp(Add2Ptr(le, le->name_off),Add2Ptr(attr, le16_to_cpu(attr->name_off)),le->name_len * sizeof(short)));+}
+static inline __le16 const *le_name(const struct ATTR_LIST_ENTRY *le) +{
- return Add2Ptr(le, le->name_off);
+}
+/* File name types (the field type in struct ATTR_FILE_NAME ) */ +#define FILE_NAME_POSIX 0 +#define FILE_NAME_UNICODE 1 +#define FILE_NAME_DOS 2 +#define FILE_NAME_UNICODE_AND_DOS (FILE_NAME_DOS | FILE_NAME_UNICODE)
+/* Filename attribute structure (0x30) */ +struct NTFS_DUP_INFO {
- __le64 cr_time; // 0x00: File creation file
- __le64 m_time; // 0x08: File modification time
- __le64 c_time; // 0x10: Last time any attribute was modified
- __le64 a_time; // 0x18: File last access time
- __le64 alloc_size; // 0x20: Data attribute allocated size, multiple of cluster size
- __le64 data_size; // 0x28: Data attribute size <= Dataalloc_size
- enum FILE_ATTRIBUTE fa; // 0x30: Standard DOS attributes & more
- __le16 ea_size; // 0x34: Packed EAs
- __le16 reparse; // 0x36: Used by Reparse
+}; // 0x38
+struct ATTR_FILE_NAME {
- struct MFT_REF home; // 0x00: MFT record for directory
- struct NTFS_DUP_INFO dup;// 0x08
- u8 name_len; // 0x40: File name length in words
- u8 type; // 0x41: File name type
- __le16 name[]; // 0x42: File name
+};
+static_assert(sizeof(((struct ATTR_FILE_NAME *)NULL)->dup) == 0x38); +static_assert(offsetof(struct ATTR_FILE_NAME, name) == 0x42); +#define SIZEOF_ATTRIBUTE_FILENAME 0x44 +#define SIZEOF_ATTRIBUTE_FILENAME_MAX (0x42 + 255 * 2)
+static inline struct ATTRIB *attr_from_name(struct ATTR_FILE_NAME *fname) +{
- return (struct ATTRIB *)((char *)fname - SIZEOF_RESIDENT);
+}
+static inline u16 fname_full_size(const struct ATTR_FILE_NAME *fname) +{
- // don't return struct_size(fname, name, fname->name_len);
- return offsetof(struct ATTR_FILE_NAME, name) +
fname->name_len * sizeof(short);+}
+static inline u8 paired_name(u8 type) +{
- if (type == FILE_NAME_UNICODE)
return FILE_NAME_DOS;- if (type == FILE_NAME_DOS)
return FILE_NAME_UNICODE;- return FILE_NAME_POSIX;
+}
+/* Index entry defines ( the field flags in NtfsDirEntry ) */ +#define NTFS_IE_HAS_SUBNODES cpu_to_le16(1) +#define NTFS_IE_LAST cpu_to_le16(2)
+/* Directory entry structure */ +struct NTFS_DE {
- union {
struct MFT_REF ref; // 0x00: MFT record number with this filestruct {__le16 data_off; // 0x00:__le16 data_size; // 0x02:__le32 res; // 0x04: must be 0} view;- };
- __le16 size; // 0x08: The size of this entry
- __le16 key_size; // 0x0A: The size of File name length in bytes + 0x42
- __le16 flags; // 0x0C: Entry flags: NTFS_IE_XXX
- __le16 res; // 0x0E:
- // Here any indexed attribute can be placed
- // One of them is:
- // struct ATTR_FILE_NAME AttrFileName;
- //
- // The last 8 bytes of this structure contains
- // the VBN of subnode
- // !!! Note !!!
- // This field is presented only if (flags & NTFS_IE_HAS_SUBNODES)
- // __le64 vbn;
+};
+static_assert(sizeof(struct NTFS_DE) == 0x10);
+static inline void de_set_vbn_le(struct NTFS_DE *e, __le64 vcn) +{
- __le64 *v = Add2Ptr(e, le16_to_cpu(e->size) - sizeof(__le64));
- *v = vcn;
+}
+static inline void de_set_vbn(struct NTFS_DE *e, CLST vcn) +{
- __le64 *v = Add2Ptr(e, le16_to_cpu(e->size) - sizeof(__le64));
- *v = cpu_to_le64(vcn);
+}
+static inline __le64 de_get_vbn_le(const struct NTFS_DE *e) +{
- return *(__le64 *)Add2Ptr(e, le16_to_cpu(e->size) - sizeof(__le64));
+}
+static inline CLST de_get_vbn(const struct NTFS_DE *e) +{
- __le64 *v = Add2Ptr(e, le16_to_cpu(e->size) - sizeof(__le64));
- return le64_to_cpu(*v);
+}
+static inline struct NTFS_DE *de_get_next(const struct NTFS_DE *e) +{
- return Add2Ptr(e, le16_to_cpu(e->size));
+}
+static inline struct ATTR_FILE_NAME *de_get_fname(const struct NTFS_DE *e) +{
- return le16_to_cpu(e->key_size) >= SIZEOF_ATTRIBUTE_FILENAME ?
Add2Ptr(e, sizeof(struct NTFS_DE)) :NULL;+}
+static inline bool de_is_last(const struct NTFS_DE *e) +{
- return e->flags & NTFS_IE_LAST;
+}
+static inline bool de_has_vcn(const struct NTFS_DE *e) +{
- return e->flags & NTFS_IE_HAS_SUBNODES;
+}
+static inline bool de_has_vcn_ex(const struct NTFS_DE *e) +{
- return (e->flags & NTFS_IE_HAS_SUBNODES) &&
(u64)(-1) != *((u64 *)Add2Ptr(e, le16_to_cpu(e->size) -sizeof(__le64)));+}
+#define MAX_BYTES_PER_NAME_ENTRY \
- QuadAlign(sizeof(struct NTFS_DE) + \
offsetof(struct ATTR_FILE_NAME, name) + \NTFS_NAME_LEN * sizeof(short))+struct INDEX_HDR {
- __le32 de_off; // 0x00: The offset from the start of this structure
// to the first NTFS_DE- __le32 used; // 0x04: The size of this structure plus all
// entries (quad-word aligned)- __le32 total; // 0x08: The allocated size of for this structure plus all entries
- u8 flags; // 0x0C: 0x00 = Small directory, 0x01 = Large directory
- u8 res[3];
- //
- // de_off + used <= total
- //
+};
+static_assert(sizeof(struct INDEX_HDR) == 0x10);
+static inline struct NTFS_DE *hdr_first_de(const struct INDEX_HDR *hdr) +{
- u32 de_off = le32_to_cpu(hdr->de_off);
- u32 used = le32_to_cpu(hdr->used);
- struct NTFS_DE *e = Add2Ptr(hdr, de_off);
- u16 esize;
- if (de_off >= used || de_off >= le32_to_cpu(hdr->total))
return NULL;- esize = le16_to_cpu(e->size);
- if (esize < sizeof(struct NTFS_DE) || de_off + esize > used)
return NULL;- return e;
+}
+static inline struct NTFS_DE *hdr_next_de(const struct INDEX_HDR *hdr,
const struct NTFS_DE *e)+{
- size_t off = PtrOffset(hdr, e);
- u32 used = le32_to_cpu(hdr->used);
- u16 esize;
- if (off >= used)
return NULL;- esize = le16_to_cpu(e->size);
- if (esize < sizeof(struct NTFS_DE) ||
off + esize + sizeof(struct NTFS_DE) > used)return NULL;- return Add2Ptr(e, esize);
+}
+static inline bool hdr_has_subnode(const struct INDEX_HDR *hdr) +{
- return hdr->flags & 1;
+}
+struct INDEX_BUFFER {
- struct NTFS_RECORD_HEADER rhdr; // 'INDX'
- __le64 vbn; // 0x10: vcn if index >= cluster or vsn id index < cluster
- struct INDEX_HDR ihdr; // 0x18:
+};
+static_assert(sizeof(struct INDEX_BUFFER) == 0x28);
+static inline bool ib_is_empty(const struct INDEX_BUFFER *ib) +{
- const struct NTFS_DE *first = hdr_first_de(&ib->ihdr);
- return !first || de_is_last(first);
+}
+static inline bool ib_is_leaf(const struct INDEX_BUFFER *ib) +{
- return !(ib->ihdr.flags & 1);
+}
+/* Index root structure ( 0x90 ) */ +enum COLLATION_RULE {
- NTFS_COLLATION_TYPE_BINARY = cpu_to_le32(0),
- // $I30
- NTFS_COLLATION_TYPE_FILENAME = cpu_to_le32(0x01),
- // $SII of $Secure and $Q of Quota
- NTFS_COLLATION_TYPE_UINT = cpu_to_le32(0x10),
- // $O of Quota
- NTFS_COLLATION_TYPE_SID = cpu_to_le32(0x11),
- // $SDH of $Secure
- NTFS_COLLATION_TYPE_SECURITY_HASH = cpu_to_le32(0x12),
- // $O of ObjId and "$R" for Reparse
- NTFS_COLLATION_TYPE_UINTS = cpu_to_le32(0x13)
+};
+static_assert(sizeof(enum COLLATION_RULE) == 4);
+// +struct INDEX_ROOT {
- enum ATTR_TYPE type; // 0x00: The type of attribute to index on
- enum COLLATION_RULE rule; // 0x04: The rule
- __le32 index_block_size;// 0x08: The size of index record
- u8 index_block_clst; // 0x0C: The number of clusters or sectors per index
- u8 res[3];
- struct INDEX_HDR ihdr; // 0x10:
+};
+static_assert(sizeof(struct INDEX_ROOT) == 0x20); +static_assert(offsetof(struct INDEX_ROOT, ihdr) == 0x10);
+#define VOLUME_FLAG_DIRTY cpu_to_le16(0x0001) +#define VOLUME_FLAG_RESIZE_LOG_FILE cpu_to_le16(0x0002)
+struct VOLUME_INFO {
- __le64 res1; // 0x00
- u8 major_ver; // 0x08: NTFS major version number (before .)
- u8 minor_ver; // 0x09: NTFS minor version number (after .)
- __le16 flags; // 0x0A: Volume flags, see VOLUME_FLAG_XXX
+}; // sizeof=0xC
+#define SIZEOF_ATTRIBUTE_VOLUME_INFO 0xc
+#define NTFS_LABEL_MAX_LENGTH (0x100 / sizeof(short)) +#define NTFS_ATTR_INDEXABLE cpu_to_le32(0x00000002) +#define NTFS_ATTR_DUPALLOWED cpu_to_le32(0x00000004) +#define NTFS_ATTR_MUST_BE_INDEXED cpu_to_le32(0x00000010) +#define NTFS_ATTR_MUST_BE_NAMED cpu_to_le32(0x00000020) +#define NTFS_ATTR_MUST_BE_RESIDENT cpu_to_le32(0x00000040) +#define NTFS_ATTR_LOG_ALWAYS cpu_to_le32(0x00000080)
+/* $AttrDef file entry */ +struct ATTR_DEF_ENTRY {
- __le16 name[0x40]; // 0x00: Attr name
- enum ATTR_TYPE type; // 0x80: struct ATTRIB type
- __le32 res; // 0x84:
- enum COLLATION_RULE rule; // 0x88:
- __le32 flags; // 0x8C: NTFS_ATTR_XXX (see above)
- __le64 min_sz; // 0x90: Minimum attribute data size
- __le64 max_sz; // 0x98: Maximum attribute data size
+};
+static_assert(sizeof(struct ATTR_DEF_ENTRY) == 0xa0);
+/* Object ID (0x40) */ +struct OBJECT_ID {
- struct GUID ObjId; // 0x00: Unique Id assigned to file
- struct GUID BirthVolumeId;// 0x10: Birth Volume Id is the Object Id of the Volume on
// which the Object Id was allocated. It never changes- struct GUID BirthObjectId; // 0x20: Birth Object Id is the first Object Id that was
// ever assigned to this MFT Record. I.e. If the Object Id// is changed for some reason, this field will reflect the// original value of the Object Id.- struct GUID DomainId; // 0x30: Domain Id is currently unused but it is intended to be
// used in a network environment where the local machine is// part of a Windows 2000 Domain. This may be used in a Windows// 2000 Advanced Server managed domain.+};
+static_assert(sizeof(struct OBJECT_ID) == 0x40);
+/* O Directory entry structure ( rule = 0x13 ) */ +struct NTFS_DE_O {
- struct NTFS_DE de;
- struct GUID ObjId; // 0x10: Unique Id assigned to file
- struct MFT_REF ref; // 0x20: MFT record number with this file
- struct GUID BirthVolumeId; // 0x28: Birth Volume Id is the Object Id of the Volume on
// which the Object Id was allocated. It never changes- struct GUID BirthObjectId; // 0x38: Birth Object Id is the first Object Id that was
// ever assigned to this MFT Record. I.e. If the Object Id// is changed for some reason, this field will reflect the// original value of the Object Id.// This field is valid if data_size == 0x48- struct GUID BirthDomainId; // 0x48: Domain Id is currently unused but it is intended
// to be used in a network environment where the local// machine is part of a Windows 2000 Domain. This may be// used in a Windows 2000 Advanced Server managed domain.+};
+static_assert(sizeof(struct NTFS_DE_O) == 0x58);
+#define NTFS_OBJECT_ENTRY_DATA_SIZE1 \
- 0x38 // struct NTFS_DE_O.BirthDomainId is not used
+#define NTFS_OBJECT_ENTRY_DATA_SIZE2 \
- 0x48 // struct NTFS_DE_O.BirthDomainId is used
+/* Q Directory entry structure ( rule = 0x11 ) */ +struct NTFS_DE_Q {
- struct NTFS_DE de;
- __le32 owner_id; // 0x10: Unique Id assigned to file
- __le32 Version; // 0x14: 0x02
- __le32 flags2; // 0x18: Quota flags, see above
- __le64 BytesUsed; // 0x1C:
- __le64 ChangeTime; // 0x24:
- __le64 WarningLimit; // 0x28:
- __le64 HardLimit; // 0x34:
- __le64 ExceededTime; // 0x3C:
- // SID is placed here
+}; // sizeof() = 0x44
+#define SIZEOF_NTFS_DE_Q 0x44
+#define SecurityDescriptorsBlockSize 0x40000 // 256K +#define SecurityDescriptorMaxSize 0x20000 // 128K +#define Log2OfSecurityDescriptorsBlockSize 18
+struct SECURITY_KEY {
- __le32 hash; // Hash value for descriptor
- __le32 sec_id; // Security Id (guaranteed unique)
+};
+/* Security descriptors (the content of $Secure::SDS data stream) */ +struct SECURITY_HDR {
- struct SECURITY_KEY key; // 0x00: Security Key
- __le64 off; // 0x08: Offset of this entry in the file
- __le32 size; // 0x10: Size of this entry, 8 byte aligned
- //
- // Security descriptor itself is placed here
- // Total size is 16 byte aligned
- //
+} __packed;
+#define SIZEOF_SECURITY_HDR 0x14
+/* SII Directory entry structure */ +struct NTFS_DE_SII {
- struct NTFS_DE de;
- __le32 sec_id; // 0x10: Key: sizeof(security_id) = wKeySize
- struct SECURITY_HDR sec_hdr; // 0x14:
+} __packed;
+#define SIZEOF_SII_DIRENTRY 0x28
+/* SDH Directory entry structure */ +struct NTFS_DE_SDH {
- struct NTFS_DE de;
- struct SECURITY_KEY key; // 0x10: Key
- struct SECURITY_HDR sec_hdr; // 0x18: Data
- __le16 magic[2]; // 0x2C: 0x00490049 "I I"
+};
+#define SIZEOF_SDH_DIRENTRY 0x30
+struct REPARSE_KEY {
- __le32 ReparseTag; // 0x00: Reparse Tag
- struct MFT_REF ref; // 0x04: MFT record number with this file
+}; // sizeof() = 0x0C
+static_assert(offsetof(struct REPARSE_KEY, ref) == 0x04); +#define SIZEOF_REPARSE_KEY 0x0C
+/* Reparse Directory entry structure */ +struct NTFS_DE_R {
- struct NTFS_DE de;
- struct REPARSE_KEY key; // 0x10: Reparse Key
- u32 zero; // 0x1c
+}; // sizeof() = 0x20
+static_assert(sizeof(struct NTFS_DE_R) == 0x20);
+/* CompressReparseBuffer.WofVersion */ +#define WOF_CURRENT_VERSION cpu_to_le32(1) +/* CompressReparseBuffer.WofProvider */ +#define WOF_PROVIDER_WIM cpu_to_le32(1) +/* CompressReparseBuffer.WofProvider */ +#define WOF_PROVIDER_SYSTEM cpu_to_le32(2) +/* CompressReparseBuffer.ProviderVer */ +#define WOF_PROVIDER_CURRENT_VERSION cpu_to_le32(1)
+#define WOF_COMPRESSION_XPRESS4K cpu_to_le32(0) // 4k +#define WOF_COMPRESSION_LZX32K cpu_to_le32(1) // 32k +#define WOF_COMPRESSION_XPRESS8K cpu_to_le32(2) // 8k +#define WOF_COMPRESSION_XPRESS16K cpu_to_le32(3) // 16k
+/*
- ATTR_REPARSE (0xC0)
- The reparse struct GUID structure is used by all 3rd party layered drivers to
- store data in a reparse point. For non-Microsoft tags, The struct GUID field
- cannot be GUID_NULL.
- The constraints on reparse tags are defined below.
- Microsoft tags can also be used with this format of the reparse point buffer.
- */
+struct REPARSE_POINT {
- __le32 ReparseTag; // 0x00:
- __le16 ReparseDataLength;// 0x04:
- __le16 Reserved;
- struct GUID Guid; // 0x08:
- //
- // Here GenericReparseBuffer is placed
- //
+};
+static_assert(sizeof(struct REPARSE_POINT) == 0x18);
+// +// Maximum allowed size of the reparse data. +// +#define MAXIMUM_REPARSE_DATA_BUFFER_SIZE (16 * 1024)
+// +// The value of the following constant needs to satisfy the following +// conditions: +// (1) Be at least as large as the largest of the reserved tags. +// (2) Be strictly smaller than all the tags in use. +// +#define IO_REPARSE_TAG_RESERVED_RANGE 1
+// +// The reparse tags are a ULONG. The 32 bits are laid out as follows: +// +// 3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 +// 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 +// +-+-+-+-+-----------------------+-------------------------------+ +// |M|R|N|R| Reserved bits | Reparse Tag Value | +// +-+-+-+-+-----------------------+-------------------------------+ +// +// M is the Microsoft bit. When set to 1, it denotes a tag owned by Microsoft. +// All ISVs must use a tag with a 0 in this position. +// Note: If a Microsoft tag is used by non-Microsoft software, the +// behavior is not defined. +// +// R is reserved. Must be zero for non-Microsoft tags. +// +// N is name surrogate. When set to 1, the file represents another named +// entity in the system. +// +// The M and N bits are OR-able. +// The following macros check for the M and N bit values: +//
+// +// Macro to determine whether a reparse point tag corresponds to a tag +// owned by Microsoft. +// +#define IsReparseTagMicrosoft(_tag) (((_tag)&IO_REPARSE_TAG_MICROSOFT))
+// +// Macro to determine whether a reparse point tag is a name surrogate +// +#define IsReparseTagNameSurrogate(_tag) (((_tag)&IO_REPARSE_TAG_NAME_SURROGATE))
+// +// The following constant represents the bits that are valid to use in +// reparse tags. +// +#define IO_REPARSE_TAG_VALID_VALUES 0xF000FFFF
+// +// Macro to determine whether a reparse tag is a valid tag. +// +#define IsReparseTagValid(_tag) \
- (!((_tag) & ~IO_REPARSE_TAG_VALID_VALUES) && \
((_tag) > IO_REPARSE_TAG_RESERVED_RANGE))+// +// Microsoft tags for reparse points. +//
+enum IO_REPARSE_TAG {
- IO_REPARSE_TAG_SYMBOLIC_LINK = cpu_to_le32(0),
- IO_REPARSE_TAG_NAME_SURROGATE = cpu_to_le32(0x20000000),
- IO_REPARSE_TAG_MICROSOFT = cpu_to_le32(0x80000000),
- IO_REPARSE_TAG_MOUNT_POINT = cpu_to_le32(0xA0000003),
- IO_REPARSE_TAG_SYMLINK = cpu_to_le32(0xA000000C),
- IO_REPARSE_TAG_HSM = cpu_to_le32(0xC0000004),
- IO_REPARSE_TAG_SIS = cpu_to_le32(0x80000007),
- IO_REPARSE_TAG_DEDUP = cpu_to_le32(0x80000013),
- IO_REPARSE_TAG_COMPRESS = cpu_to_le32(0x80000017),
- //
- // The reparse tag 0x80000008 is reserved for Microsoft internal use
- // (may be published in the future)
- //
- //
- // Microsoft reparse tag reserved for DFS
- //
- IO_REPARSE_TAG_DFS = cpu_to_le32(0x8000000A),
- //
- // Microsoft reparse tag reserved for the file system filter manager
- //
- IO_REPARSE_TAG_FILTER_MANAGER = cpu_to_le32(0x8000000B),
- //
- // Non-Microsoft tags for reparse points
- //
- //
- // Tag allocated to CONGRUENT, May 2000. Used by IFSTEST
- //
- IO_REPARSE_TAG_IFSTEST_CONGRUENT = cpu_to_le32(0x00000009),
- //
- // Tag allocated to ARKIVIO
- //
- IO_REPARSE_TAG_ARKIVIO = cpu_to_le32(0x0000000C),
- //
- // Tag allocated to SOLUTIONSOFT
- //
- IO_REPARSE_TAG_SOLUTIONSOFT = cpu_to_le32(0x2000000D),
- //
- // Tag allocated to COMMVAULT
- //
- IO_REPARSE_TAG_COMMVAULT = cpu_to_le32(0x0000000E),
- // OneDrive??
- IO_REPARSE_TAG_CLOUD = cpu_to_le32(0x9000001A),
- IO_REPARSE_TAG_CLOUD_1 = cpu_to_le32(0x9000101A),
- IO_REPARSE_TAG_CLOUD_2 = cpu_to_le32(0x9000201A),
- IO_REPARSE_TAG_CLOUD_3 = cpu_to_le32(0x9000301A),
- IO_REPARSE_TAG_CLOUD_4 = cpu_to_le32(0x9000401A),
- IO_REPARSE_TAG_CLOUD_5 = cpu_to_le32(0x9000501A),
- IO_REPARSE_TAG_CLOUD_6 = cpu_to_le32(0x9000601A),
- IO_REPARSE_TAG_CLOUD_7 = cpu_to_le32(0x9000701A),
- IO_REPARSE_TAG_CLOUD_8 = cpu_to_le32(0x9000801A),
- IO_REPARSE_TAG_CLOUD_9 = cpu_to_le32(0x9000901A),
- IO_REPARSE_TAG_CLOUD_A = cpu_to_le32(0x9000A01A),
- IO_REPARSE_TAG_CLOUD_B = cpu_to_le32(0x9000B01A),
- IO_REPARSE_TAG_CLOUD_C = cpu_to_le32(0x9000C01A),
- IO_REPARSE_TAG_CLOUD_D = cpu_to_le32(0x9000D01A),
- IO_REPARSE_TAG_CLOUD_E = cpu_to_le32(0x9000E01A),
- IO_REPARSE_TAG_CLOUD_F = cpu_to_le32(0x9000F01A),
+};
+#define SYMLINK_FLAG_RELATIVE 1
+/* Microsoft reparse buffer. (see DDK for details) */ +struct REPARSE_DATA_BUFFER {
- __le32 ReparseTag; // 0x00:
- __le16 ReparseDataLength; // 0x04:
- __le16 Reserved;
- union {
// If ReparseTag == 0xA0000003 (IO_REPARSE_TAG_MOUNT_POINT)struct {__le16 SubstituteNameOffset; // 0x08__le16 SubstituteNameLength; // 0x0A__le16 PrintNameOffset; // 0x0C__le16 PrintNameLength; // 0x0E__le16 PathBuffer[]; // 0x10} MountPointReparseBuffer;// If ReparseTag == 0xA000000C (IO_REPARSE_TAG_SYMLINK)// https://msdn.microsoft.com/en-us/library/cc232006.aspxstruct {__le16 SubstituteNameOffset; // 0x08__le16 SubstituteNameLength; // 0x0A__le16 PrintNameOffset; // 0x0C__le16 PrintNameLength; // 0x0E// 0-absolute path 1- relative path, SYMLINK_FLAG_RELATIVE__le32 Flags; // 0x10__le16 PathBuffer[]; // 0x14} SymbolicLinkReparseBuffer;// If ReparseTag == 0x80000017Ustruct {__le32 WofVersion; // 0x08 == 1/* 1 - WIM backing provider ("WIMBoot"),* 2 - System compressed file provider*/__le32 WofProvider; // 0x0C__le32 ProviderVer; // 0x10: == 1 WOF_FILE_PROVIDER_CURRENT_VERSION == 1__le32 CompressionFormat; // 0x14: 0, 1, 2, 3. See WOF_COMPRESSION_XXX} CompressReparseBuffer;struct {u8 DataBuffer[1]; // 0x08} GenericReparseBuffer;- };
+};
+/* ATTR_EA_INFO (0xD0) */
+#define FILE_NEED_EA 0x80 // See ntifs.h +/* FILE_NEED_EA, indicates that the file to which the EA belongs cannot be
- interpreted without understanding the associated extended attributes.
- */
+struct EA_INFO {
- __le16 size_pack; // 0x00: Size of buffer to hold in packed form
- __le16 count; // 0x02: Count of EA's with FILE_NEED_EA bit set
- __le32 size; // 0x04: Size of buffer to hold in unpacked form
+};
+static_assert(sizeof(struct EA_INFO) == 8);
+/* ATTR_EA (0xE0) */ +struct EA_FULL {
- __le32 size; // 0x00: (not in packed)
- u8 flags; // 0x04
- u8 name_len; // 0x05
- __le16 elength; // 0x06
- u8 name[]; // 0x08
+};
+static_assert(offsetof(struct EA_FULL, name) == 8);
+#define ACL_REVISION 2 +#define ACL_REVISION_DS 4
+#define SE_SELF_RELATIVE cpu_to_le16(0x8000)
+struct SECURITY_DESCRIPTOR_RELATIVE {
- u8 Revision;
- u8 Sbz1;
- __le16 Control;
- __le32 Owner;
- __le32 Group;
- __le32 Sacl;
- __le32 Dacl;
+}; +static_assert(sizeof(struct SECURITY_DESCRIPTOR_RELATIVE) == 0x14);
+struct ACE_HEADER {
- u8 AceType;
- u8 AceFlags;
- __le16 AceSize;
+}; +static_assert(sizeof(struct ACE_HEADER) == 4);
+struct ACL {
- u8 AclRevision;
- u8 Sbz1;
- __le16 AclSize;
- __le16 AceCount;
- __le16 Sbz2;
+}; +static_assert(sizeof(struct ACL) == 8);
+struct SID {
- u8 Revision;
- u8 SubAuthorityCount;
- u8 IdentifierAuthority[6];
- __le32 SubAuthority[];
+}; +static_assert(offsetof(struct SID, SubAuthority) == 8);
+// clang-format on diff --git a/fs/ntfs3/ntfs_fs.h b/fs/ntfs3/ntfs_fs.h new file mode 100644 index 000000000000..0c3ac89c3115 --- /dev/null +++ b/fs/ntfs3/ntfs_fs.h @@ -0,0 +1,1092 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/*
- Copyright (C) 2019-2021 Paragon Software GmbH, All rights reserved.
- */
+// clang-format off +#define MINUS_ONE_T ((size_t)(-1)) +/* Biggest MFT / smallest cluster */ +#define MAXIMUM_BYTES_PER_MFT 4096 +#define NTFS_BLOCKS_PER_MFT_RECORD (MAXIMUM_BYTES_PER_MFT / 512)
+#define MAXIMUM_BYTES_PER_INDEX 4096 +#define NTFS_BLOCKS_PER_INODE (MAXIMUM_BYTES_PER_INDEX / 512)
+/* ntfs specific error code when fixup failed*/ +#define E_NTFS_FIXUP 555 +/* ntfs specific error code about resident->nonresident*/ +#define E_NTFS_NONRESIDENT 556 +/* ntfs specific error code about punch hole*/ +#define E_NTFS_NOTALIGNED 557
+/* sbi->flags */ +#define NTFS_FLAGS_NODISCARD 0x00000001 +/* Set when LogFile is replaying */ +#define NTFS_FLAGS_LOG_REPLAYING 0x00000008 +/* Set when we changed first MFT's which copy must be updated in $MftMirr */ +#define NTFS_FLAGS_MFTMIRR 0x00001000 +#define NTFS_FLAGS_NEED_REPLAY 0x04000000
+/* ni->ni_flags */ +/*
- Data attribute is external compressed (lzx/xpress)
- 1 - WOF_COMPRESSION_XPRESS4K
- 2 - WOF_COMPRESSION_XPRESS8K
- 3 - WOF_COMPRESSION_XPRESS16K
- 4 - WOF_COMPRESSION_LZX32K
- */
+#define NI_FLAG_COMPRESSED_MASK 0x0000000f +/* Data attribute is deduplicated */ +#define NI_FLAG_DEDUPLICATED 0x00000010 +#define NI_FLAG_EA 0x00000020 +#define NI_FLAG_DIR 0x00000040 +#define NI_FLAG_RESIDENT 0x00000080 +#define NI_FLAG_UPDATE_PARENT 0x00000100 +// clang-format on
+struct ntfs_mount_options {
- struct nls_table *nls;
- kuid_t fs_uid;
- kgid_t fs_gid;
- 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*/;+};
+/* special value to unpack and deallocate*/ +#define RUN_DEALLOCATE ((struct runs_tree *)(size_t)1)
+/* TODO: use rb tree instead of array */ +struct runs_tree {
- struct ntfs_run *runs;
- size_t count; // Currently used size a ntfs_run storage.
- size_t allocated; // Currently allocated ntfs_run storage size.
+};
+struct ntfs_buffers {
- /* Biggest MFT / smallest cluster = 4096 / 512 = 8 */
- /* Biggest index / smallest cluster = 4096 / 512 = 8 */
- struct buffer_head *bh[PAGE_SIZE >> SECTOR_SHIFT];
- u32 bytes;
- u32 nbufs;
- u32 off;
+};
+enum ALLOCATE_OPT {
- ALLOCATE_DEF = 0, // Allocate all clusters
- ALLOCATE_MFT = 1, // Allocate for MFT
+};
+enum bitmap_mutex_classes {
- BITMAP_MUTEX_CLUSTERS = 0,
- BITMAP_MUTEX_MFT = 1,
+};
+struct wnd_bitmap {
- struct super_block *sb;
- struct rw_semaphore rw_lock;
- struct runs_tree run;
- size_t nbits;
- size_t total_zeroes; // total number of free bits
- u16 *free_bits; // free bits in each window
- size_t nwnd;
- u32 bits_last; // bits in last window
- struct rb_root start_tree; // extents, sorted by 'start'
- struct rb_root count_tree; // extents, sorted by 'count + start'
- size_t count; // extents count
- /*
* -1 Tree is activated but not updated (too many fragments)* 0 - Tree is not activated* 1 - Tree is activated and updated*/- int uptodated;
- size_t extent_min; // Minimal extent used while building
- size_t extent_max; // Upper estimate of biggest free block
- /* Zone [bit, end) */
- size_t zone_bit;
- size_t zone_end;
- bool set_tail; // not necessary in driver
- bool inited;
+};
+typedef int (*NTFS_CMP_FUNC)(const void *key1, size_t len1, const void *key2,
size_t len2, const void *param);+enum index_mutex_classed {
- INDEX_MUTEX_I30 = 0,
- INDEX_MUTEX_SII = 1,
- INDEX_MUTEX_SDH = 2,
- INDEX_MUTEX_SO = 3,
- INDEX_MUTEX_SQ = 4,
- INDEX_MUTEX_SR = 5,
- INDEX_MUTEX_TOTAL
+};
+/* ntfs_index - allocation unit inside directory */ +struct ntfs_index {
- struct runs_tree bitmap_run;
- struct runs_tree alloc_run;
- /* read/write access to 'bitmap_run'/'alloc_run' while ntfs_readdir */
- struct rw_semaphore run_lock;
- /*TODO: remove 'cmp'*/
- NTFS_CMP_FUNC cmp;
- u8 index_bits; // log2(root->index_block_size)
- u8 idx2vbn_bits; // log2(root->index_block_clst)
- u8 vbn2vbo_bits; // index_block_size < cluster? 9 : cluster_bits
- u8 type; // index_mutex_classed
+};
+/* Minimum mft zone */ +#define NTFS_MIN_MFT_ZONE 100
+/* ntfs file system in-core superblock data */ +struct ntfs_sb_info {
- struct super_block *sb;
- u32 discard_granularity;
- u64 discard_granularity_mask_inv; // ~(discard_granularity_mask_inv-1)
- u32 cluster_size; // bytes per cluster
- u32 cluster_mask; // == cluster_size - 1
- u64 cluster_mask_inv; // ~(cluster_size - 1)
- u32 block_mask; // sb->s_blocksize - 1
- u32 blocks_per_cluster; // cluster_size / sb->s_blocksize
- u32 record_size;
- u32 sector_size;
- u32 index_size;
- u8 sector_bits;
- u8 cluster_bits;
- u8 record_bits;
- u64 maxbytes; // Maximum size for normal files
- u64 maxbytes_sparse; // Maximum size for sparse file
- u32 flags; // See NTFS_FLAGS_XXX
- CLST bad_clusters; // The count of marked bad clusters
- u16 max_bytes_per_attr; // maximum attribute size in record
- u16 attr_size_tr; // attribute size threshold (320 bytes)
- /* Records in $Extend */
- CLST objid_no;
- CLST quota_no;
- CLST reparse_no;
- CLST usn_jrnl_no;
- struct ATTR_DEF_ENTRY *def_table; // attribute definition table
- u32 def_entries;
- u32 ea_max_size;
- struct MFT_REC *new_rec;
- u16 *upcase;
- struct {
u64 lbo, lbo2;struct ntfs_inode *ni;struct wnd_bitmap bitmap; // $MFT::Bitmap/** MFT records [11-24) used to expand MFT itself* They always marked as used in $MFT::Bitmap* 'reserved_bitmap' contains real bitmap of these records*/ulong reserved_bitmap; // bitmap of used records [11 - 24)size_t next_free; // The next record to allocate fromsize_t used; // mft valid size in recordsu32 recs_mirr; // Number of records in MFTMirru8 next_reserved;u8 reserved_bitmap_inited;- } mft;
- struct {
struct wnd_bitmap bitmap; // $Bitmap::DataCLST next_free_lcn;- } used;
- struct {
u64 size; // in bytesu64 blocks; // in blocksu64 ser_num;struct ntfs_inode *ni;__le16 flags; // cached current VOLUME_INFO::flags, VOLUME_FLAG_DIRTYu8 major_ver;u8 minor_ver;char label[65];bool real_dirty; /* real fs state*/- } volume;
- struct {
struct ntfs_index index_sii;struct ntfs_index index_sdh;struct ntfs_inode *ni;u32 next_id;u64 next_off;__le32 def_security_id;- } security;
- struct {
struct ntfs_index index_r;struct ntfs_inode *ni;u64 max_size; // 16K- } reparse;
- struct {
struct ntfs_index index_o;struct ntfs_inode *ni;- } objid;
- struct {
struct mutex mtx_lznt;struct lznt *lznt;+#ifdef CONFIG_NTFS3_LZX_XPRESS
struct mutex mtx_xpress;struct xpress_decompressor *xpress;struct mutex mtx_lzx;struct lzx_decompressor *lzx;+#endif
- } compress;
- struct ntfs_mount_options options;
- struct ratelimit_state msg_ratelimit;
+};
+/*
- one MFT record(usually 1024 bytes), consists of attributes
- */
+struct mft_inode {
- struct rb_node node;
- struct ntfs_sb_info *sbi;
- struct MFT_REC *mrec;
- struct ntfs_buffers nb;
- CLST rno;
- bool dirty;
+};
+/* nested class for ntfs_inode::ni_lock */ +enum ntfs_inode_mutex_lock_class {
- NTFS_INODE_MUTEX_DIRTY,
- NTFS_INODE_MUTEX_SECURITY,
- NTFS_INODE_MUTEX_OBJID,
- NTFS_INODE_MUTEX_REPARSE,
- NTFS_INODE_MUTEX_NORMAL,
- NTFS_INODE_MUTEX_PARENT,
+};
+/*
- ntfs inode - extends linux inode. consists of one or more mft inodes
- */
+struct ntfs_inode {
- struct mft_inode mi; // base record
- /*
* Valid size: [0 - i_valid) - these range in file contains valid data* Range [i_valid - inode->i_size) - contains 0* Usually i_valid <= inode->i_size*/- u64 i_valid;
- struct timespec64 i_crtime;
- struct mutex ni_lock;
- /* file attributes from std */
- enum FILE_ATTRIBUTE std_fa;
- __le32 std_security_id;
- /*
* tree of mft_inode* not empty when primary MFT record (usually 1024 bytes) can't save all attributes* e.g. file becomes too fragmented or contains a lot of names*/- struct rb_root mi_tree;
- /*
* This member is used in ntfs_readdir to ensure that all subrecords are loaded*/- u8 mi_loaded;
- union {
struct ntfs_index dir;struct {struct rw_semaphore run_lock;struct runs_tree run;+#ifdef CONFIG_NTFS3_LZX_XPRESS
struct page *offs_page;+#endif
} file;- };
- struct {
struct runs_tree run;struct ATTR_LIST_ENTRY *le; // 1K aligned memorysize_t size;bool dirty;- } attr_list;
- size_t ni_flags; // NI_FLAG_XXX
- struct inode vfs_inode;
+};
+struct indx_node {
- struct ntfs_buffers nb;
- struct INDEX_BUFFER *index;
+};
+struct ntfs_fnd {
- int level;
- struct indx_node *nodes[20];
- struct NTFS_DE *de[20];
- struct NTFS_DE *root_de;
+};
+enum REPARSE_SIGN {
- REPARSE_NONE = 0,
- REPARSE_COMPRESSED = 1,
- REPARSE_DEDUPLICATED = 2,
- REPARSE_LINK = 3
+};
+/* functions from attrib.c*/ +int attr_load_runs(struct ATTRIB *attr, struct ntfs_inode *ni,
struct runs_tree *run, const CLST *vcn);+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 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);+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 attr_data_get_block(struct ntfs_inode *ni, CLST vcn, CLST clen, CLST *lcn,
CLST *len, bool *new);+int attr_data_read_resident(struct ntfs_inode *ni, struct page *page); +int attr_data_write_resident(struct ntfs_inode *ni, struct page *page); +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);+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);+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);+int attr_is_frame_compressed(struct ntfs_inode *ni, struct ATTRIB *attr,
CLST frame, CLST *clst_data);+int attr_allocate_frame(struct ntfs_inode *ni, CLST frame, size_t compr_size,
u64 new_valid);+int attr_collapse_range(struct ntfs_inode *ni, u64 vbo, u64 bytes); +int attr_punch_hole(struct ntfs_inode *ni, u64 vbo, u64 bytes, u32 *frame_size);
+/* functions from attrlist.c*/ +void al_destroy(struct ntfs_inode *ni); +bool al_verify(struct ntfs_inode *ni); +int ntfs_load_attr_list(struct ntfs_inode *ni, struct ATTRIB *attr); +struct ATTR_LIST_ENTRY *al_enumerate(struct ntfs_inode *ni,
struct ATTR_LIST_ENTRY *le);+struct ATTR_LIST_ENTRY *al_find_le(struct ntfs_inode *ni,
struct ATTR_LIST_ENTRY *le,const struct ATTRIB *attr);+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);+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);+bool al_remove_le(struct ntfs_inode *ni, struct ATTR_LIST_ENTRY *le); +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);+int al_update(struct ntfs_inode *ni); +static inline size_t al_aligned(size_t size) +{
- return (size + 1023) & ~(size_t)1023;
+}
+/* globals from bitfunc.c */ +bool are_bits_clear(const ulong *map, size_t bit, size_t nbits); +bool are_bits_set(const ulong *map, size_t bit, size_t nbits); +size_t get_set_bits_ex(const ulong *map, size_t bit, size_t nbits);
+/* globals from dir.c */ +int ntfs_utf16_to_nls(struct ntfs_sb_info *sbi, const struct le_str *uni,
u8 *buf, int buf_len);+int ntfs_nls_to_utf16(struct ntfs_sb_info *sbi, const u8 *name, u32 name_len,
struct cpu_str *uni, u32 max_ulen,enum utf16_endian endian);+struct inode *dir_search_u(struct inode *dir, const struct cpu_str *uni,
struct ntfs_fnd *fnd);+bool dir_is_empty(struct inode *dir); +extern const struct file_operations ntfs_dir_operations;
+/* globals from file.c*/ +int ntfs_getattr(struct user_namespace *mnt_userns, const struct path *path,
struct kstat *stat, u32 request_mask, u32 flags);+void ntfs_sparse_cluster(struct inode *inode, struct page *page0, CLST vcn,
CLST len);+int ntfs3_setattr(struct user_namespace *mnt_userns, struct dentry *dentry,
struct iattr *attr);+int ntfs_file_open(struct inode *inode, struct file *file); +int ntfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
__u64 start, __u64 len);+extern const struct inode_operations ntfs_special_inode_operations; +extern const struct inode_operations ntfs_file_inode_operations; +extern const struct file_operations ntfs_file_operations;
+/* globals from frecord.c */ +void ni_remove_mi(struct ntfs_inode *ni, struct mft_inode *mi); +struct ATTR_STD_INFO *ni_std(struct ntfs_inode *ni); +struct ATTR_STD_INFO5 *ni_std5(struct ntfs_inode *ni); +void ni_clear(struct ntfs_inode *ni); +int ni_load_mi_ex(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi); +int ni_load_mi(struct ntfs_inode *ni, struct ATTR_LIST_ENTRY *le,
struct mft_inode **mi);+struct ATTRIB *ni_find_attr(struct ntfs_inode *ni, struct ATTRIB *attr,
struct ATTR_LIST_ENTRY **entry_o,enum ATTR_TYPE type, const __le16 *name,u8 name_len, const CLST *vcn,struct mft_inode **mi);+struct ATTRIB *ni_enum_attr_ex(struct ntfs_inode *ni, struct ATTRIB *attr,
struct ATTR_LIST_ENTRY **le,struct mft_inode **mi);+struct ATTRIB *ni_load_attr(struct ntfs_inode *ni, enum ATTR_TYPE type,
const __le16 *name, u8 name_len, CLST vcn,struct mft_inode **pmi);+int ni_load_all_mi(struct ntfs_inode *ni); +bool ni_add_subrecord(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi); +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);+int ni_create_attr_list(struct ntfs_inode *ni); +int ni_expand_list(struct ntfs_inode *ni); +int ni_insert_nonresident(struct ntfs_inode *ni, enum ATTR_TYPE type,
const __le16 *name, u8 name_len,const struct runs_tree *run, CLST svcn, CLST len,__le16 flags, struct ATTRIB **new_attr,struct mft_inode **mi);+int ni_insert_resident(struct ntfs_inode *ni, u32 data_size,
enum ATTR_TYPE type, const __le16 *name, u8 name_len,struct ATTRIB **new_attr, struct mft_inode **mi);+int ni_remove_attr_le(struct ntfs_inode *ni, struct ATTRIB *attr,
struct ATTR_LIST_ENTRY *le);+int ni_delete_all(struct ntfs_inode *ni); +struct ATTR_FILE_NAME *ni_fname_name(struct ntfs_inode *ni,
const struct cpu_str *uni,const struct MFT_REF *home,struct ATTR_LIST_ENTRY **entry);+struct ATTR_FILE_NAME *ni_fname_type(struct ntfs_inode *ni, u8 name_type,
struct ATTR_LIST_ENTRY **entry);+int ni_new_attr_flags(struct ntfs_inode *ni, enum FILE_ATTRIBUTE new_fa); +enum REPARSE_SIGN ni_parse_reparse(struct ntfs_inode *ni, struct ATTRIB *attr,
void *buffer);+int ni_write_inode(struct inode *inode, int sync, const char *hint); +#define _ni_write_inode(i, w) ni_write_inode(i, w, __func__) +int ni_fiemap(struct ntfs_inode *ni, struct fiemap_extent_info *fieinfo,
__u64 vbo, __u64 len);+int ni_readpage_cmpr(struct ntfs_inode *ni, struct page *page); +int ni_decompress_file(struct ntfs_inode *ni); +int ni_read_frame(struct ntfs_inode *ni, u64 frame_vbo, struct page **pages,
u32 pages_per_frame);+int ni_write_frame(struct ntfs_inode *ni, struct page **pages,
u32 pages_per_frame);+/* globals from fslog.c */ +int log_replay(struct ntfs_inode *ni, bool *initialized);
+/* globals from fsntfs.c */ +bool ntfs_fix_pre_write(struct NTFS_RECORD_HEADER *rhdr, size_t bytes); +int ntfs_fix_post_read(struct NTFS_RECORD_HEADER *rhdr, size_t bytes,
bool simple);+int ntfs_extend_init(struct ntfs_sb_info *sbi); +int ntfs_loadlog_and_replay(struct ntfs_inode *ni, struct ntfs_sb_info *sbi); +const struct ATTR_DEF_ENTRY *ntfs_query_def(struct ntfs_sb_info *sbi,
enum ATTR_TYPE Type);+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 ntfs_look_free_mft(struct ntfs_sb_info *sbi, CLST *rno, bool mft,
struct ntfs_inode *ni, struct mft_inode **mi);+void ntfs_mark_rec_free(struct ntfs_sb_info *sbi, CLST rno); +int ntfs_clear_mft_tail(struct ntfs_sb_info *sbi, size_t from, size_t to); +int ntfs_refresh_zone(struct ntfs_sb_info *sbi); +int ntfs_update_mftmirr(struct ntfs_sb_info *sbi, int wait); +enum NTFS_DIRTY_FLAGS {
- NTFS_DIRTY_CLEAR = 0,
- NTFS_DIRTY_DIRTY = 1,
- NTFS_DIRTY_ERROR = 2,
+}; +int ntfs_set_state(struct ntfs_sb_info *sbi, enum NTFS_DIRTY_FLAGS dirty); +int ntfs_sb_read(struct super_block *sb, u64 lbo, size_t bytes, void *buffer); +int ntfs_sb_write(struct super_block *sb, u64 lbo, size_t bytes,
const void *buffer, int wait);+int ntfs_sb_write_run(struct ntfs_sb_info *sbi, const struct runs_tree *run,
u64 vbo, const void *buf, size_t bytes);+struct buffer_head *ntfs_bread_run(struct ntfs_sb_info *sbi,
const struct runs_tree *run, u64 vbo);+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 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 ntfs_get_bh(struct ntfs_sb_info *sbi, const struct runs_tree *run, u64 vbo,
u32 bytes, struct ntfs_buffers *nb);+int ntfs_write_bh(struct ntfs_sb_info *sbi, struct NTFS_RECORD_HEADER *rhdr,
struct ntfs_buffers *nb, int sync);+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 ntfs_bio_fill_1(struct ntfs_sb_info *sbi, const struct runs_tree *run); +int ntfs_vbo_to_lbo(struct ntfs_sb_info *sbi, const struct runs_tree *run,
u64 vbo, u64 *lbo, u64 *bytes);+struct ntfs_inode *ntfs_new_inode(struct ntfs_sb_info *sbi, CLST nRec,
bool dir);+extern const u8 s_default_security[0x50]; +bool is_sd_valid(const struct SECURITY_DESCRIPTOR_RELATIVE *sd, u32 len); +int ntfs_security_init(struct ntfs_sb_info *sbi); +int ntfs_get_security_by_id(struct ntfs_sb_info *sbi, __le32 security_id,
struct SECURITY_DESCRIPTOR_RELATIVE **sd,size_t *size);+int ntfs_insert_security(struct ntfs_sb_info *sbi,
const struct SECURITY_DESCRIPTOR_RELATIVE *sd,u32 size, __le32 *security_id, bool *inserted);+int ntfs_reparse_init(struct ntfs_sb_info *sbi); +int ntfs_objid_init(struct ntfs_sb_info *sbi); +int ntfs_objid_remove(struct ntfs_sb_info *sbi, struct GUID *guid); +int ntfs_insert_reparse(struct ntfs_sb_info *sbi, __le32 rtag,
const struct MFT_REF *ref);+int ntfs_remove_reparse(struct ntfs_sb_info *sbi, __le32 rtag,
const struct MFT_REF *ref);+void mark_as_free_ex(struct ntfs_sb_info *sbi, CLST lcn, CLST len, bool trim); +int run_deallocate(struct ntfs_sb_info *sbi, struct runs_tree *run, bool trim);
+/* globals from index.c */ +int indx_used_bit(struct ntfs_index *indx, struct ntfs_inode *ni, size_t *bit); +void fnd_clear(struct ntfs_fnd *fnd); +static inline struct ntfs_fnd *fnd_get(void) +{
- return ntfs_zalloc(sizeof(struct ntfs_fnd));
+} +static inline void fnd_put(struct ntfs_fnd *fnd) +{
- if (fnd) {
fnd_clear(fnd);ntfs_free(fnd);- }
+} +void indx_clear(struct ntfs_index *idx); +int indx_init(struct ntfs_index *indx, struct ntfs_sb_info *sbi,
const struct ATTRIB *attr, enum index_mutex_classed type);+struct INDEX_ROOT *indx_get_root(struct ntfs_index *indx, struct ntfs_inode *ni,
struct ATTRIB **attr, struct mft_inode **mi);+int indx_read(struct ntfs_index *idx, struct ntfs_inode *ni, CLST vbn,
struct indx_node **node);+int indx_find(struct ntfs_index *indx, struct ntfs_inode *dir,
const struct INDEX_ROOT *root, const void *Key, size_t KeyLen,const void *param, int *diff, struct NTFS_DE **entry,struct ntfs_fnd *fnd);+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 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 indx_insert_entry(struct ntfs_index *indx, struct ntfs_inode *ni,
const struct NTFS_DE *new_de, const void *param,struct ntfs_fnd *fnd);+int indx_delete_entry(struct ntfs_index *indx, struct ntfs_inode *ni,
const void *key, u32 key_len, const void *param);+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);+/* globals from inode.c */ +struct inode *ntfs_iget5(struct super_block *sb, const struct MFT_REF *ref,
const struct cpu_str *name);+int ntfs_set_size(struct inode *inode, u64 new_size); +int reset_log_file(struct inode *inode); +int ntfs_get_block(struct inode *inode, sector_t vbn,
struct buffer_head *bh_result, int create);+int ntfs3_write_inode(struct inode *inode, struct writeback_control *wbc); +int ntfs_sync_inode(struct inode *inode); +int ntfs_flush_inodes(struct super_block *sb, struct inode *i1,
struct inode *i2);+int inode_write_data(struct inode *inode, const void *data, size_t bytes); +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 ntfs_link_inode(struct inode *inode, struct dentry *dentry); +int ntfs_unlink_inode(struct inode *dir, const struct dentry *dentry); +void ntfs_evict_inode(struct inode *inode); +extern const struct inode_operations ntfs_link_inode_operations; +extern const struct address_space_operations ntfs_aops; +extern const struct address_space_operations ntfs_aops_cmpr;
+/* globals from name_i.c*/ +int fill_name_de(struct ntfs_sb_info *sbi, void *buf, const struct qstr *name,
const struct cpu_str *uni);+struct dentry *ntfs3_get_parent(struct dentry *child);
+extern const struct inode_operations ntfs_dir_inode_operations; +extern const struct inode_operations ntfs_special_inode_operations;
+/* globals from record.c */ +int mi_get(struct ntfs_sb_info *sbi, CLST rno, struct mft_inode **mi); +void mi_put(struct mft_inode *mi); +int mi_init(struct mft_inode *mi, struct ntfs_sb_info *sbi, CLST rno); +int mi_read(struct mft_inode *mi, bool is_mft); +struct ATTRIB *mi_enum_attr(struct mft_inode *mi, struct ATTRIB *attr); +// TODO: id? +struct ATTRIB *mi_find_attr(struct mft_inode *mi, struct ATTRIB *attr,
enum ATTR_TYPE type, const __le16 *name,size_t name_len, const __le16 *id);+static inline struct ATTRIB *rec_find_attr_le(struct mft_inode *rec,
struct ATTR_LIST_ENTRY *le)+{
- return mi_find_attr(rec, NULL, le->type, le_name(le), le->name_len,
&le->id);+} +int mi_write(struct mft_inode *mi, int wait); +int mi_format_new(struct mft_inode *mi, struct ntfs_sb_info *sbi, CLST rno,
__le16 flags, bool is_mft);+void mi_mark_free(struct mft_inode *mi); +struct ATTRIB *mi_insert_attr(struct mft_inode *mi, enum ATTR_TYPE type,
const __le16 *name, u8 name_len, u32 asize,u16 name_off);+bool mi_remove_attr(struct mft_inode *mi, struct ATTRIB *attr); +bool mi_resize_attr(struct mft_inode *mi, struct ATTRIB *attr, int bytes); +int mi_pack_runs(struct mft_inode *mi, struct ATTRIB *attr,
struct runs_tree *run, CLST len);+static inline bool mi_is_ref(const struct mft_inode *mi,
const struct MFT_REF *ref)+{
- if (le32_to_cpu(ref->low) != mi->rno)
return false;- if (ref->seq != mi->mrec->seq)
return false;+#ifdef CONFIG_NTFS3_64BIT_CLUSTER
- return le16_to_cpu(ref->high) == (mi->rno >> 32);
+#else
- return !ref->high;
+#endif +}
+static inline void mi_get_ref(const struct mft_inode *mi, struct MFT_REF *ref) +{
- ref->low = cpu_to_le32(mi->rno);
+#ifdef CONFIG_NTFS3_64BIT_CLUSTER
- ref->high = cpu_to_le16(mi->rno >> 32);
+#else
- ref->high = 0;
+#endif
- ref->seq = mi->mrec->seq;
+}
+/* globals from run.c */ +bool run_lookup_entry(const struct runs_tree *run, CLST vcn, CLST *lcn,
CLST *len, size_t *index);+void run_truncate(struct runs_tree *run, CLST vcn); +void run_truncate_head(struct runs_tree *run, CLST vcn); +void run_truncate_around(struct runs_tree *run, CLST vcn); +bool run_lookup(const struct runs_tree *run, CLST vcn, size_t *Index); +bool run_add_entry(struct runs_tree *run, CLST vcn, CLST lcn, CLST len,
bool is_mft);+bool run_collapse_range(struct runs_tree *run, CLST vcn, CLST len); +bool run_get_entry(const struct runs_tree *run, size_t index, CLST *vcn,
CLST *lcn, CLST *len);+bool run_is_mapped_full(const struct runs_tree *run, CLST svcn, CLST evcn);
+int run_pack(const struct runs_tree *run, CLST svcn, CLST len, u8 *run_buf,
u32 run_buf_size, CLST *packed_vcns);+int run_unpack(struct runs_tree *run, struct ntfs_sb_info *sbi, CLST ino,
CLST svcn, CLST evcn, CLST vcn, const u8 *run_buf,u32 run_buf_size);+#ifdef NTFS3_CHECK_FREE_CLST +int run_unpack_ex(struct runs_tree *run, struct ntfs_sb_info *sbi, CLST ino,
CLST svcn, CLST evcn, CLST vcn, const u8 *run_buf,u32 run_buf_size);+#else +#define run_unpack_ex run_unpack +#endif +int run_get_highest_vcn(CLST vcn, const u8 *run_buf, u64 *highest_vcn);
+/* globals from super.c */ +void *ntfs_set_shared(void *ptr, u32 bytes); +void *ntfs_put_shared(void *ptr); +void ntfs_unmap_meta(struct super_block *sb, CLST lcn, CLST len); +int ntfs_discard(struct ntfs_sb_info *sbi, CLST Lcn, CLST Len);
+/* globals from bitmap.c*/ +int __init ntfs3_init_bitmap(void); +void ntfs3_exit_bitmap(void); +void wnd_close(struct wnd_bitmap *wnd); +static inline size_t wnd_zeroes(const struct wnd_bitmap *wnd) +{
- return wnd->total_zeroes;
+} +int wnd_init(struct wnd_bitmap *wnd, struct super_block *sb, size_t nbits); +int wnd_set_free(struct wnd_bitmap *wnd, size_t bit, size_t bits); +int wnd_set_used(struct wnd_bitmap *wnd, size_t bit, size_t bits); +bool wnd_is_free(struct wnd_bitmap *wnd, size_t bit, size_t bits); +bool wnd_is_used(struct wnd_bitmap *wnd, size_t bit, size_t bits);
+/* Possible values for 'flags' 'wnd_find' */ +#define BITMAP_FIND_MARK_AS_USED 0x01 +#define BITMAP_FIND_FULL 0x02 +size_t wnd_find(struct wnd_bitmap *wnd, size_t to_alloc, size_t hint,
size_t flags, size_t *allocated);+int wnd_extend(struct wnd_bitmap *wnd, size_t new_bits); +void wnd_zone_set(struct wnd_bitmap *wnd, size_t Lcn, size_t Len); +int ntfs_trim_fs(struct ntfs_sb_info *sbi, struct fstrim_range *range);
+/* globals from upcase.c */ +int ntfs_cmp_names(const __le16 *s1, size_t l1, const __le16 *s2, size_t l2,
const u16 *upcase, bool bothcase);+int ntfs_cmp_names_cpu(const struct cpu_str *uni1, const struct le_str *uni2,
const u16 *upcase, bool bothcase);+/* globals from xattr.c */ +#ifdef CONFIG_NTFS3_FS_POSIX_ACL +struct posix_acl *ntfs_get_acl(struct inode *inode, int type); +int ntfs_set_acl(struct user_namespace *mnt_userns, struct inode *inode,
struct posix_acl *acl, int type);+int ntfs_init_acl(struct user_namespace *mnt_userns, struct inode *inode,
struct inode *dir);+#else +#define ntfs_get_acl NULL +#define ntfs_set_acl NULL +#endif
+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);+ssize_t ntfs_listxattr(struct dentry *dentry, char *buffer, size_t size); +extern const struct xattr_handler *ntfs_xattr_handlers[];
+int ntfs_save_wsl_perm(struct inode *inode); +void ntfs_get_wsl_perm(struct inode *inode);
+/* globals from lznt.c */ +struct lznt *get_lznt_ctx(int level); +size_t compress_lznt(const void *uncompressed, size_t uncompressed_size,
void *compressed, size_t compressed_size,struct lznt *ctx);+ssize_t decompress_lznt(const void *compressed, size_t compressed_size,
void *uncompressed, size_t uncompressed_size);+static inline bool is_ntfs3(struct ntfs_sb_info *sbi) +{
- return sbi->volume.major_ver >= 3;
+}
+/*(sb->s_flags & SB_ACTIVE)*/ +static inline bool is_mounted(struct ntfs_sb_info *sbi) +{
- return !!sbi->sb->s_root;
+}
+static inline bool ntfs_is_meta_file(struct ntfs_sb_info *sbi, CLST rno) +{
- return rno < MFT_REC_FREE || rno == sbi->objid_no ||
rno == sbi->quota_no || rno == sbi->reparse_no ||rno == sbi->usn_jrnl_no;+}
+static inline void ntfs_unmap_page(struct page *page) +{
- kunmap(page);
- put_page(page);
+}
+static inline struct page *ntfs_map_page(struct address_space *mapping,
unsigned long index)+{
- struct page *page = read_mapping_page(mapping, index, NULL);
- if (!IS_ERR(page)) {
kmap(page);if (!PageError(page))return page;ntfs_unmap_page(page);return ERR_PTR(-EIO);- }
- return page;
+}
+static inline size_t wnd_zone_bit(const struct wnd_bitmap *wnd) +{
- return wnd->zone_bit;
+}
+static inline size_t wnd_zone_len(const struct wnd_bitmap *wnd) +{
- return wnd->zone_end - wnd->zone_bit;
+}
+static inline void run_init(struct runs_tree *run) +{
- run->runs = NULL;
- run->count = 0;
- run->allocated = 0;
+}
+static inline struct runs_tree *run_alloc(void) +{
- return ntfs_zalloc(sizeof(struct runs_tree));
+}
+static inline void run_close(struct runs_tree *run) +{
- ntfs_vfree(run->runs);
- memset(run, 0, sizeof(*run));
+}
+static inline void run_free(struct runs_tree *run) +{
- if (run) {
ntfs_vfree(run->runs);ntfs_free(run);- }
+}
+static inline bool run_is_empty(struct runs_tree *run) +{
- return !run->count;
+}
+/* NTFS uses quad aligned bitmaps */ +static inline size_t bitmap_size(size_t bits) +{
- return QuadAlign((bits + 7) >> 3);
+}
+#define _100ns2seconds 10000000 +#define SecondsToStartOf1970 0x00000002B6109100
+#define NTFS_TIME_GRAN 100
+/*
- kernel2nt
- converts in-memory kernel timestamp into nt time
- */
+static inline __le64 kernel2nt(const struct timespec64 *ts) +{
- // 10^7 units of 100 nanoseconds one second
- return cpu_to_le64(_100ns2seconds *
(ts->tv_sec + SecondsToStartOf1970) +ts->tv_nsec / NTFS_TIME_GRAN);+}
+/*
- nt2kernel
- converts on-disk nt time into kernel timestamp
- */
+static inline void nt2kernel(const __le64 tm, struct timespec64 *ts) +{
- u64 t = le64_to_cpu(tm) - _100ns2seconds * SecondsToStartOf1970;
- // WARNING: do_div changes its first argument(!)
- ts->tv_nsec = do_div(t, _100ns2seconds) * 100;
- ts->tv_sec = t;
+}
+static inline struct ntfs_sb_info *ntfs_sb(struct super_block *sb) +{
- return sb->s_fs_info;
+}
+/* Align up on cluster boundary */ +static inline u64 ntfs_up_cluster(const struct ntfs_sb_info *sbi, u64 size) +{
- return (size + sbi->cluster_mask) & sbi->cluster_mask_inv;
+}
+/* Align up on cluster boundary */ +static inline u64 ntfs_up_block(const struct super_block *sb, u64 size) +{
- return (size + sb->s_blocksize - 1) & ~(u64)(sb->s_blocksize - 1);
+}
+static inline CLST bytes_to_cluster(const struct ntfs_sb_info *sbi, u64 size) +{
- return (size + sbi->cluster_mask) >> sbi->cluster_bits;
+}
+static inline u64 bytes_to_block(const struct super_block *sb, u64 size) +{
- return (size + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
+}
+static inline struct buffer_head *ntfs_bread(struct super_block *sb,
sector_t block)+{
- struct buffer_head *bh = sb_bread(sb, block);
- if (bh)
return bh;- ntfs_err(sb, "failed to read volume at offset 0x%llx",
(u64)block << sb->s_blocksize_bits);- 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);
+}
+static inline bool is_compressed(const struct ntfs_inode *ni) +{
- return (ni->std_fa & FILE_ATTRIBUTE_COMPRESSED) ||
(ni->ni_flags & NI_FLAG_COMPRESSED_MASK);+}
+static inline int ni_ext_compress_bits(const struct ntfs_inode *ni) +{
- return 0xb + (ni->ni_flags & NI_FLAG_COMPRESSED_MASK);
+}
+/* bits - 0xc, 0xd, 0xe, 0xf, 0x10 */ +static inline void ni_set_ext_compress_bits(struct ntfs_inode *ni, u8 bits) +{
- ni->ni_flags |= (bits - 0xb) & NI_FLAG_COMPRESSED_MASK;
+}
+static inline bool is_dedup(const struct ntfs_inode *ni) +{
- return ni->ni_flags & NI_FLAG_DEDUPLICATED;
+}
+static inline bool is_encrypted(const struct ntfs_inode *ni) +{
- return ni->std_fa & FILE_ATTRIBUTE_ENCRYPTED;
+}
+static inline bool is_sparsed(const struct ntfs_inode *ni) +{
- return ni->std_fa & FILE_ATTRIBUTE_SPARSE_FILE;
+}
+static inline int is_resident(struct ntfs_inode *ni) +{
- return ni->ni_flags & NI_FLAG_RESIDENT;
+}
+static inline void le16_sub_cpu(__le16 *var, u16 val) +{
- *var = cpu_to_le16(le16_to_cpu(*var) - val);
+}
+static inline void le32_sub_cpu(__le32 *var, u32 val) +{
- *var = cpu_to_le32(le32_to_cpu(*var) - val);
+}
+static inline void nb_put(struct ntfs_buffers *nb) +{
- u32 i, nbufs = nb->nbufs;
- if (!nbufs)
return;- for (i = 0; i < nbufs; i++)
put_bh(nb->bh[i]);- nb->nbufs = 0;
+}
+static inline void put_indx_node(struct indx_node *in) +{
- if (!in)
return;- ntfs_free(in->index);
- nb_put(&in->nb);
- ntfs_free(in);
+}
+static inline void mi_clear(struct mft_inode *mi) +{
- nb_put(&mi->nb);
- ntfs_free(mi->mrec);
- mi->mrec = NULL;
+}
+static inline void ni_lock(struct ntfs_inode *ni) +{
- mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_NORMAL);
+}
+static inline void ni_lock_dir(struct ntfs_inode *ni) +{
- mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_PARENT);
+}
+static inline void ni_unlock(struct ntfs_inode *ni) +{
- mutex_unlock(&ni->ni_lock);
+}
+static inline int ni_trylock(struct ntfs_inode *ni) +{
- return mutex_trylock(&ni->ni_lock);
+}
+static inline int attr_load_runs_attr(struct ntfs_inode *ni,
struct ATTRIB *attr,struct runs_tree *run, CLST vcn)+{
- return attr_load_runs_vcn(ni, attr->type, attr_name(attr),
attr->name_len, run, vcn);+}
+static inline void le64_sub_cpu(__le64 *var, u64 val) +{
- *var = cpu_to_le64(le64_to_cpu(*var) - val);
+} diff --git a/fs/ntfs3/upcase.c b/fs/ntfs3/upcase.c new file mode 100644 index 000000000000..9617382aca64 --- /dev/null +++ b/fs/ntfs3/upcase.c @@ -0,0 +1,105 @@ +// 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/module.h> +#include <linux/nls.h>
+#include "debug.h" +#include "ntfs.h" +#include "ntfs_fs.h"
+static inline u16 upcase_unicode_char(const u16 *upcase, u16 chr) +{
- if (chr < 'a')
return chr;- if (chr <= 'z')
return chr - ('a' - 'A');- return upcase[chr];
+}
+/*
- Thanks Kari Argillander kari.argillander@gmail.com for idea and implementation 'bothcase'
- Straigth way to compare names:
- case insensitive
- if name equals and 'bothcases' then
- case sensitive
- 'Straigth 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,
const u16 *upcase, bool bothcase)+{
- int diff1 = 0;
- int diff2;
- size_t len = min(l1, l2);
- if (!bothcase && upcase)
goto case_insentive;- for (; len; s1++, s2++, len--) {
diff1 = le16_to_cpu(*s1) - le16_to_cpu(*s2);if (diff1) {if (bothcase && upcase)goto case_insentive;return diff1;}- }
- return l1 - l2;
+case_insentive:
- for (; len; s1++, s2++, len--) {
diff2 = upcase_unicode_char(upcase, le16_to_cpu(*s1)) -upcase_unicode_char(upcase, le16_to_cpu(*s2));if (diff2)return diff2;- }
- diff2 = l1 - l2;
- return diff2 ? diff2 : diff1;
+}
+int ntfs_cmp_names_cpu(const struct cpu_str *uni1, const struct le_str *uni2,
const u16 *upcase, bool bothcase)+{
- const u16 *s1 = uni1->name;
- const __le16 *s2 = uni2->name;
- size_t l1 = uni1->len;
- size_t l2 = uni2->len;
- size_t len = min(l1, l2);
- int diff1 = 0;
- int diff2;
- if (!bothcase && upcase)
goto case_insentive;- for (; len; s1++, s2++, len--) {
diff1 = *s1 - le16_to_cpu(*s2);if (diff1) {if (bothcase && upcase)goto case_insentive;return diff1;}- }
- return l1 - l2;
+case_insentive:
- for (; len; s1++, s2++, len--) {
diff2 = upcase_unicode_char(upcase, *s1) -upcase_unicode_char(upcase, le16_to_cpu(*s2));if (diff2)return diff2;- }
- diff2 = l1 - l2;
- return diff2 ? diff2 : diff1;
+}