From: Konstantin Komarov almaz.alexandrovich@paragon-software.com
mainline inclusion from mainline-v5.15 commit 66019837a5563e1f80a4228b7d110d8c52bfdd8b category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I4G67J?from=project-issue CVE: NA
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This is possible because of moving lock into ntfs_create_inode.
Reviewed-by: Kari Argillander kari.argillander@gmail.com Signed-off-by: Konstantin Komarov almaz.alexandrovich@paragon-software.com Signed-off-by: Yin Xiujiang yinxiujiang@kylinos.cn Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com Acked-by: Hou Tao houtao1@huawei.com Acked-by: Xie XiuQi xiexiuqi@huawei.com Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com --- fs/ntfs3/xattr.c | 55 ++++++++++++------------------------------------ 1 file changed, 14 insertions(+), 41 deletions(-)
diff --git a/fs/ntfs3/xattr.c b/fs/ntfs3/xattr.c index 59ec5e61a239..83bbee277e12 100644 --- a/fs/ntfs3/xattr.c +++ b/fs/ntfs3/xattr.c @@ -693,54 +693,27 @@ int ntfs_init_acl(struct user_namespace *mnt_userns, struct inode *inode, 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; - } + err = posix_acl_create(dir, &inode->i_mode, &default_acl, &acl); + if (err) + return err;
- if (default_acl) + if (default_acl) { err = ntfs_set_acl_ex(mnt_userns, inode, default_acl, ACL_TYPE_DEFAULT, 1); + posix_acl_release(default_acl); + } else { + inode->i_default_acl = NULL; + }
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); + else { + if (!err) + err = ntfs_set_acl_ex(mnt_userns, inode, acl, + ACL_TYPE_ACCESS, 1); + posix_acl_release(acl); + }
-out: return err; } #endif