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fs/ntfs3: update mode in xattr when ACL can be reduced to mode 

If a file's ACL can be reduced to standard mode bits, update mode
accordingly, persist the change, and update the cached ACL. This keeps
mode and ACL consistent and avoids redundant xattrs.

Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
pull/1354/merge
Konstantin Komarov 2025-10-30 23:49:27 +03:00
parent d8e1e0d33d
commit 266ab6d02a
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1 changed files with 14 additions and 4 deletions
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18
fs/ntfs3/xattr.c
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@ -654,12 +654,22 @@ static noinline int ntfs_set_acl_ex(struct mnt_idmap *idmap,
err = ntfs_set_ea(inode, name, name_len, value, size, flags, 0, NULL);
if (err == -ENODATA && !size)
err = 0; /* Removing non existed xattr. */
if (!err) {
set_cached_acl(inode, type, acl);
if (err)
goto out;
if (inode->i_mode != mode) {
umode_t old_mode = inode->i_mode;
inode->i_mode = mode;
err = ntfs_save_wsl_perm(inode, NULL);
if (err) {
inode->i_mode = old_mode;
goto out;
}
inode->i_mode = mode;
inode_set_ctime_current(inode);
mark_inode_dirty(inode);
}
set_cached_acl(inode, type, acl);
inode_set_ctime_current(inode);
mark_inode_dirty(inode);
out:
kfree(value);