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ntfs3: Implement fileattr_get for case sensitivity

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Report NTFS case sensitivity behavior via the FS_XFLAG_CASEFOLD
flag. NTFS always preserves case at rest.

Reviewed-by: Roland Mainz <roland.mainz@nrubsig.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Link: https://patch.msgid.link/20260507-case-sensitivity-v14-5-e62cc8200435@oracle.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Chuck Lever 2026-05-07 04:52:58 -04:00 committed by Christian Brauner
parent 27e0b573dd
commit eeb7b37b97
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3 changed files with 31 additions and 0 deletions
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29
fs/ntfs3/file.c
View File

@ -180,6 +180,34 @@ long ntfs_compat_ioctl(struct file *filp, u32 cmd, unsigned long arg)
}
#endif
/*
* ntfs_fileattr_get - inode_operations::fileattr_get
*/
int ntfs_fileattr_get(struct dentry *dentry, struct file_kattr *fa)
{
struct inode *inode = d_inode(dentry);
struct ntfs_sb_info *sbi = inode->i_sb->s_fs_info;
/* Avoid any operation if inode is bad. */
if (unlikely(is_bad_ni(ntfs_i(inode))))
return -EINVAL;
/*
* NTFS preserves case (the default). Case sensitivity depends on
* mount options: with "nocase", NTFS is case-insensitive;
* otherwise it is case-sensitive.
*/
if (sbi->options->nocase) {
fa->fsx_xflags |= FS_XFLAG_CASEFOLD;
fa->flags |= FS_CASEFOLD_FL;
}
if (inode->i_flags & S_IMMUTABLE) {
fa->fsx_xflags |= FS_XFLAG_IMMUTABLE;
fa->flags |= FS_IMMUTABLE_FL;
}
return 0;
}
/*
* ntfs_getattr - inode_operations::getattr
*/
@ -1547,6 +1575,7 @@ const struct inode_operations ntfs_file_inode_operations = {
.get_acl = ntfs_get_acl,
.set_acl = ntfs_set_acl,
.fiemap = ntfs_fiemap,
.fileattr_get = ntfs_fileattr_get,
};
const struct file_operations ntfs_file_operations = {

1
fs/ntfs3/namei.c
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@ -518,6 +518,7 @@ const struct inode_operations ntfs_dir_inode_operations = {
.getattr = ntfs_getattr,
.listxattr = ntfs_listxattr,
.fiemap = ntfs_fiemap,
.fileattr_get = ntfs_fileattr_get,
};
const struct inode_operations ntfs_special_inode_operations = {

1
fs/ntfs3/ntfs_fs.h
View File

@ -529,6 +529,7 @@ bool dir_is_empty(struct inode *dir);
extern const struct file_operations ntfs_dir_operations;
/* Globals from file.c */
int ntfs_fileattr_get(struct dentry *dentry, struct file_kattr *fa);
int ntfs_getattr(struct mnt_idmap *idmap, const struct path *path,
struct kstat *stat, u32 request_mask, u32 flags);
int ntfs_setattr(struct mnt_idmap *idmap, struct dentry *dentry,