3 * Copyright (C) 2011 Novell Inc.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 as published by
7 * the Free Software Foundation.
11 #include <linux/namei.h>
12 #include <linux/xattr.h>
13 #include <linux/security.h>
14 #include <linux/cred.h>
15 #include <linux/posix_acl.h>
16 #include <linux/posix_acl_xattr.h>
17 #include "overlayfs.h"
19 void ovl_cleanup(struct inode
*wdir
, struct dentry
*wdentry
)
24 if (d_is_dir(wdentry
))
25 err
= ovl_do_rmdir(wdir
, wdentry
);
27 err
= ovl_do_unlink(wdir
, wdentry
);
31 pr_err("overlayfs: cleanup of '%pd2' failed (%i)\n",
36 struct dentry
*ovl_lookup_temp(struct dentry
*workdir
, struct dentry
*dentry
)
41 snprintf(name
, sizeof(name
), "#%lx", (unsigned long) dentry
);
43 temp
= lookup_one_len(name
, workdir
, strlen(name
));
44 if (!IS_ERR(temp
) && temp
->d_inode
) {
45 pr_err("overlayfs: workdir/%s already exists\n", name
);
53 /* caller holds i_mutex on workdir */
54 static struct dentry
*ovl_whiteout(struct dentry
*workdir
,
55 struct dentry
*dentry
)
58 struct dentry
*whiteout
;
59 struct inode
*wdir
= workdir
->d_inode
;
61 whiteout
= ovl_lookup_temp(workdir
, dentry
);
65 err
= ovl_do_whiteout(wdir
, whiteout
);
68 whiteout
= ERR_PTR(err
);
74 int ovl_create_real(struct inode
*dir
, struct dentry
*newdentry
,
75 struct kstat
*stat
, const char *link
,
76 struct dentry
*hardlink
, bool debug
)
80 if (newdentry
->d_inode
)
84 err
= ovl_do_link(hardlink
, dir
, newdentry
, debug
);
86 switch (stat
->mode
& S_IFMT
) {
88 err
= ovl_do_create(dir
, newdentry
, stat
->mode
, debug
);
92 err
= ovl_do_mkdir(dir
, newdentry
, stat
->mode
, debug
);
99 err
= ovl_do_mknod(dir
, newdentry
,
100 stat
->mode
, stat
->rdev
, debug
);
104 err
= ovl_do_symlink(dir
, newdentry
, link
, debug
);
111 if (!err
&& WARN_ON(!newdentry
->d_inode
)) {
113 * Not quite sure if non-instantiated dentry is legal or not.
114 * VFS doesn't seem to care so check and warn here.
121 static int ovl_set_opaque(struct dentry
*upperdentry
)
123 return ovl_do_setxattr(upperdentry
, OVL_XATTR_OPAQUE
, "y", 1, 0);
126 static void ovl_remove_opaque(struct dentry
*upperdentry
)
130 err
= ovl_do_removexattr(upperdentry
, OVL_XATTR_OPAQUE
);
132 pr_warn("overlayfs: failed to remove opaque from '%s' (%i)\n",
133 upperdentry
->d_name
.name
, err
);
137 static int ovl_dir_getattr(struct vfsmount
*mnt
, struct dentry
*dentry
,
141 enum ovl_path_type type
;
142 struct path realpath
;
143 const struct cred
*old_cred
;
145 type
= ovl_path_real(dentry
, &realpath
);
146 old_cred
= ovl_override_creds(dentry
->d_sb
);
147 err
= vfs_getattr(&realpath
, stat
);
148 revert_creds(old_cred
);
152 stat
->dev
= dentry
->d_sb
->s_dev
;
153 stat
->ino
= dentry
->d_inode
->i_ino
;
156 * It's probably not worth it to count subdirs to get the
157 * correct link count. nlink=1 seems to pacify 'find' and
160 if (OVL_TYPE_MERGE(type
))
166 /* Common operations required to be done after creation of file on upper */
167 static void ovl_instantiate(struct dentry
*dentry
, struct inode
*inode
,
168 struct dentry
*newdentry
, bool hardlink
)
170 ovl_dentry_version_inc(dentry
->d_parent
);
171 ovl_dentry_update(dentry
, newdentry
);
173 ovl_inode_update(inode
, d_inode(newdentry
));
174 ovl_copyattr(newdentry
->d_inode
, inode
);
176 WARN_ON(ovl_inode_real(inode
, NULL
) != d_inode(newdentry
));
179 d_instantiate(dentry
, inode
);
182 static int ovl_create_upper(struct dentry
*dentry
, struct inode
*inode
,
183 struct kstat
*stat
, const char *link
,
184 struct dentry
*hardlink
)
186 struct dentry
*upperdir
= ovl_dentry_upper(dentry
->d_parent
);
187 struct inode
*udir
= upperdir
->d_inode
;
188 struct dentry
*newdentry
;
191 if (!hardlink
&& !IS_POSIXACL(udir
))
192 stat
->mode
&= ~current_umask();
194 inode_lock_nested(udir
, I_MUTEX_PARENT
);
195 newdentry
= lookup_one_len(dentry
->d_name
.name
, upperdir
,
197 err
= PTR_ERR(newdentry
);
198 if (IS_ERR(newdentry
))
200 err
= ovl_create_real(udir
, newdentry
, stat
, link
, hardlink
, false);
204 ovl_instantiate(dentry
, inode
, newdentry
, !!hardlink
);
213 static int ovl_lock_rename_workdir(struct dentry
*workdir
,
214 struct dentry
*upperdir
)
216 /* Workdir should not be the same as upperdir */
217 if (workdir
== upperdir
)
220 /* Workdir should not be subdir of upperdir and vice versa */
221 if (lock_rename(workdir
, upperdir
) != NULL
)
227 unlock_rename(workdir
, upperdir
);
229 pr_err("overlayfs: failed to lock workdir+upperdir\n");
233 static struct dentry
*ovl_clear_empty(struct dentry
*dentry
,
234 struct list_head
*list
)
236 struct dentry
*workdir
= ovl_workdir(dentry
);
237 struct inode
*wdir
= workdir
->d_inode
;
238 struct dentry
*upperdir
= ovl_dentry_upper(dentry
->d_parent
);
239 struct inode
*udir
= upperdir
->d_inode
;
240 struct path upperpath
;
241 struct dentry
*upper
;
242 struct dentry
*opaquedir
;
246 if (WARN_ON(!workdir
))
247 return ERR_PTR(-EROFS
);
249 err
= ovl_lock_rename_workdir(workdir
, upperdir
);
253 ovl_path_upper(dentry
, &upperpath
);
254 err
= vfs_getattr(&upperpath
, &stat
);
259 if (!S_ISDIR(stat
.mode
))
261 upper
= upperpath
.dentry
;
262 if (upper
->d_parent
->d_inode
!= udir
)
265 opaquedir
= ovl_lookup_temp(workdir
, dentry
);
266 err
= PTR_ERR(opaquedir
);
267 if (IS_ERR(opaquedir
))
270 err
= ovl_create_real(wdir
, opaquedir
, &stat
, NULL
, NULL
, true);
274 err
= ovl_copy_xattr(upper
, opaquedir
);
278 err
= ovl_set_opaque(opaquedir
);
282 inode_lock(opaquedir
->d_inode
);
283 err
= ovl_set_attr(opaquedir
, &stat
);
284 inode_unlock(opaquedir
->d_inode
);
288 err
= ovl_do_rename(wdir
, opaquedir
, udir
, upper
, RENAME_EXCHANGE
);
292 ovl_cleanup_whiteouts(upper
, list
);
293 ovl_cleanup(wdir
, upper
);
294 unlock_rename(workdir
, upperdir
);
296 /* dentry's upper doesn't match now, get rid of it */
302 ovl_cleanup(wdir
, opaquedir
);
306 unlock_rename(workdir
, upperdir
);
311 static struct dentry
*ovl_check_empty_and_clear(struct dentry
*dentry
)
314 struct dentry
*ret
= NULL
;
315 enum ovl_path_type type
= ovl_path_type(dentry
);
318 err
= ovl_check_empty_dir(dentry
, &list
);
325 * When removing an empty opaque directory, then it makes no sense to
326 * replace it with an exact replica of itself.
328 * If no upperdentry then skip clearing whiteouts.
330 * Can race with copy-up, since we don't hold the upperdir mutex.
331 * Doesn't matter, since copy-up can't create a non-empty directory
334 if (OVL_TYPE_UPPER(type
) && OVL_TYPE_MERGE(type
))
335 ret
= ovl_clear_empty(dentry
, &list
);
338 ovl_cache_free(&list
);
343 static int ovl_set_upper_acl(struct dentry
*upperdentry
, const char *name
,
344 const struct posix_acl
*acl
)
350 if (!IS_ENABLED(CONFIG_FS_POSIX_ACL
) || !acl
)
353 size
= posix_acl_to_xattr(NULL
, acl
, NULL
, 0);
354 buffer
= kmalloc(size
, GFP_KERNEL
);
358 size
= posix_acl_to_xattr(&init_user_ns
, acl
, buffer
, size
);
363 err
= vfs_setxattr(upperdentry
, name
, buffer
, size
, XATTR_CREATE
);
369 static int ovl_create_over_whiteout(struct dentry
*dentry
, struct inode
*inode
,
370 struct kstat
*stat
, const char *link
,
371 struct dentry
*hardlink
)
373 struct dentry
*workdir
= ovl_workdir(dentry
);
374 struct inode
*wdir
= workdir
->d_inode
;
375 struct dentry
*upperdir
= ovl_dentry_upper(dentry
->d_parent
);
376 struct inode
*udir
= upperdir
->d_inode
;
377 struct dentry
*upper
;
378 struct dentry
*newdentry
;
380 struct posix_acl
*acl
, *default_acl
;
382 if (WARN_ON(!workdir
))
386 err
= posix_acl_create(dentry
->d_parent
->d_inode
,
387 &stat
->mode
, &default_acl
, &acl
);
392 err
= ovl_lock_rename_workdir(workdir
, upperdir
);
396 newdentry
= ovl_lookup_temp(workdir
, dentry
);
397 err
= PTR_ERR(newdentry
);
398 if (IS_ERR(newdentry
))
401 upper
= lookup_one_len(dentry
->d_name
.name
, upperdir
,
403 err
= PTR_ERR(upper
);
407 err
= ovl_create_real(wdir
, newdentry
, stat
, link
, hardlink
, true);
412 * mode could have been mutilated due to umask (e.g. sgid directory)
415 !S_ISLNK(stat
->mode
) && newdentry
->d_inode
->i_mode
!= stat
->mode
) {
416 struct iattr attr
= {
417 .ia_valid
= ATTR_MODE
,
418 .ia_mode
= stat
->mode
,
420 inode_lock(newdentry
->d_inode
);
421 err
= notify_change(newdentry
, &attr
, NULL
);
422 inode_unlock(newdentry
->d_inode
);
427 err
= ovl_set_upper_acl(newdentry
, XATTR_NAME_POSIX_ACL_ACCESS
,
432 err
= ovl_set_upper_acl(newdentry
, XATTR_NAME_POSIX_ACL_DEFAULT
,
438 if (!hardlink
&& S_ISDIR(stat
->mode
)) {
439 err
= ovl_set_opaque(newdentry
);
443 err
= ovl_do_rename(wdir
, newdentry
, udir
, upper
,
448 ovl_cleanup(wdir
, upper
);
450 err
= ovl_do_rename(wdir
, newdentry
, udir
, upper
, 0);
454 ovl_instantiate(dentry
, inode
, newdentry
, !!hardlink
);
461 unlock_rename(workdir
, upperdir
);
464 posix_acl_release(acl
);
465 posix_acl_release(default_acl
);
470 ovl_cleanup(wdir
, newdentry
);
474 static int ovl_create_or_link(struct dentry
*dentry
, struct inode
*inode
,
475 struct kstat
*stat
, const char *link
,
476 struct dentry
*hardlink
)
479 const struct cred
*old_cred
;
480 struct cred
*override_cred
;
482 err
= ovl_copy_up(dentry
->d_parent
);
486 old_cred
= ovl_override_creds(dentry
->d_sb
);
488 override_cred
= prepare_creds();
490 override_cred
->fsuid
= inode
->i_uid
;
491 override_cred
->fsgid
= inode
->i_gid
;
492 put_cred(override_creds(override_cred
));
493 put_cred(override_cred
);
495 if (!ovl_dentry_is_opaque(dentry
))
496 err
= ovl_create_upper(dentry
, inode
, stat
, link
,
499 err
= ovl_create_over_whiteout(dentry
, inode
, stat
,
502 revert_creds(old_cred
);
504 struct inode
*realinode
= d_inode(ovl_dentry_upper(dentry
));
506 WARN_ON(inode
->i_mode
!= realinode
->i_mode
);
507 WARN_ON(!uid_eq(inode
->i_uid
, realinode
->i_uid
));
508 WARN_ON(!gid_eq(inode
->i_gid
, realinode
->i_gid
));
513 static int ovl_create_object(struct dentry
*dentry
, int mode
, dev_t rdev
,
518 struct kstat stat
= {
522 err
= ovl_want_write(dentry
);
527 inode
= ovl_new_inode(dentry
->d_sb
, mode
);
531 inode_init_owner(inode
, dentry
->d_parent
->d_inode
, mode
);
532 stat
.mode
= inode
->i_mode
;
534 err
= ovl_create_or_link(dentry
, inode
, &stat
, link
, NULL
);
539 ovl_drop_write(dentry
);
544 static int ovl_create(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
,
547 return ovl_create_object(dentry
, (mode
& 07777) | S_IFREG
, 0, NULL
);
550 static int ovl_mkdir(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
)
552 return ovl_create_object(dentry
, (mode
& 07777) | S_IFDIR
, 0, NULL
);
555 static int ovl_mknod(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
,
558 /* Don't allow creation of "whiteout" on overlay */
559 if (S_ISCHR(mode
) && rdev
== WHITEOUT_DEV
)
562 return ovl_create_object(dentry
, mode
, rdev
, NULL
);
565 static int ovl_symlink(struct inode
*dir
, struct dentry
*dentry
,
568 return ovl_create_object(dentry
, S_IFLNK
, 0, link
);
571 static int ovl_link(struct dentry
*old
, struct inode
*newdir
,
577 err
= ovl_want_write(old
);
581 err
= ovl_copy_up(old
);
585 inode
= d_inode(old
);
588 err
= ovl_create_or_link(new, inode
, NULL
, NULL
, ovl_dentry_upper(old
));
598 static int ovl_remove_and_whiteout(struct dentry
*dentry
, bool is_dir
)
600 struct dentry
*workdir
= ovl_workdir(dentry
);
601 struct inode
*wdir
= workdir
->d_inode
;
602 struct dentry
*upperdir
= ovl_dentry_upper(dentry
->d_parent
);
603 struct inode
*udir
= upperdir
->d_inode
;
604 struct dentry
*whiteout
;
605 struct dentry
*upper
;
606 struct dentry
*opaquedir
= NULL
;
610 if (WARN_ON(!workdir
))
614 opaquedir
= ovl_check_empty_and_clear(dentry
);
615 err
= PTR_ERR(opaquedir
);
616 if (IS_ERR(opaquedir
))
620 err
= ovl_lock_rename_workdir(workdir
, upperdir
);
624 upper
= lookup_one_len(dentry
->d_name
.name
, upperdir
,
626 err
= PTR_ERR(upper
);
631 if ((opaquedir
&& upper
!= opaquedir
) ||
632 (!opaquedir
&& ovl_dentry_upper(dentry
) &&
633 upper
!= ovl_dentry_upper(dentry
))) {
637 whiteout
= ovl_whiteout(workdir
, dentry
);
638 err
= PTR_ERR(whiteout
);
639 if (IS_ERR(whiteout
))
643 flags
= RENAME_EXCHANGE
;
645 err
= ovl_do_rename(wdir
, whiteout
, udir
, upper
, flags
);
649 ovl_cleanup(wdir
, upper
);
651 ovl_dentry_version_inc(dentry
->d_parent
);
658 unlock_rename(workdir
, upperdir
);
665 ovl_cleanup(wdir
, whiteout
);
669 static int ovl_remove_upper(struct dentry
*dentry
, bool is_dir
)
671 struct dentry
*upperdir
= ovl_dentry_upper(dentry
->d_parent
);
672 struct inode
*dir
= upperdir
->d_inode
;
673 struct dentry
*upper
;
676 inode_lock_nested(dir
, I_MUTEX_PARENT
);
677 upper
= lookup_one_len(dentry
->d_name
.name
, upperdir
,
679 err
= PTR_ERR(upper
);
684 if (upper
== ovl_dentry_upper(dentry
)) {
686 err
= vfs_rmdir(dir
, upper
);
688 err
= vfs_unlink(dir
, upper
, NULL
);
689 ovl_dentry_version_inc(dentry
->d_parent
);
694 * Keeping this dentry hashed would mean having to release
695 * upperpath/lowerpath, which could only be done if we are the
696 * sole user of this dentry. Too tricky... Just unhash for
707 static inline int ovl_check_sticky(struct dentry
*dentry
)
709 struct inode
*dir
= ovl_dentry_real(dentry
->d_parent
)->d_inode
;
710 struct inode
*inode
= ovl_dentry_real(dentry
)->d_inode
;
712 if (check_sticky(dir
, inode
))
718 static int ovl_do_remove(struct dentry
*dentry
, bool is_dir
)
720 enum ovl_path_type type
;
722 const struct cred
*old_cred
;
725 err
= ovl_check_sticky(dentry
);
729 err
= ovl_want_write(dentry
);
733 err
= ovl_copy_up(dentry
->d_parent
);
737 type
= ovl_path_type(dentry
);
739 old_cred
= ovl_override_creds(dentry
->d_sb
);
740 if (OVL_TYPE_PURE_UPPER(type
))
741 err
= ovl_remove_upper(dentry
, is_dir
);
743 err
= ovl_remove_and_whiteout(dentry
, is_dir
);
744 revert_creds(old_cred
);
747 clear_nlink(dentry
->d_inode
);
749 drop_nlink(dentry
->d_inode
);
752 ovl_drop_write(dentry
);
757 static int ovl_unlink(struct inode
*dir
, struct dentry
*dentry
)
759 return ovl_do_remove(dentry
, false);
762 static int ovl_rmdir(struct inode
*dir
, struct dentry
*dentry
)
764 return ovl_do_remove(dentry
, true);
767 static int ovl_rename2(struct inode
*olddir
, struct dentry
*old
,
768 struct inode
*newdir
, struct dentry
*new,
772 enum ovl_path_type old_type
;
773 enum ovl_path_type new_type
;
774 struct dentry
*old_upperdir
;
775 struct dentry
*new_upperdir
;
776 struct dentry
*olddentry
;
777 struct dentry
*newdentry
;
781 bool cleanup_whiteout
= false;
782 bool overwrite
= !(flags
& RENAME_EXCHANGE
);
783 bool is_dir
= d_is_dir(old
);
784 bool new_is_dir
= false;
785 struct dentry
*opaquedir
= NULL
;
786 const struct cred
*old_cred
= NULL
;
789 if (flags
& ~(RENAME_EXCHANGE
| RENAME_NOREPLACE
))
792 flags
&= ~RENAME_NOREPLACE
;
794 err
= ovl_check_sticky(old
);
798 /* Don't copy up directory trees */
799 old_type
= ovl_path_type(old
);
801 if (OVL_TYPE_MERGE_OR_LOWER(old_type
) && is_dir
)
805 err
= ovl_check_sticky(new);
812 new_type
= ovl_path_type(new);
814 if (!overwrite
&& OVL_TYPE_MERGE_OR_LOWER(new_type
) && new_is_dir
)
818 if (!OVL_TYPE_UPPER(new_type
) && !OVL_TYPE_UPPER(old_type
)) {
819 if (ovl_dentry_lower(old
)->d_inode
==
820 ovl_dentry_lower(new)->d_inode
)
823 if (OVL_TYPE_UPPER(new_type
) && OVL_TYPE_UPPER(old_type
)) {
824 if (ovl_dentry_upper(old
)->d_inode
==
825 ovl_dentry_upper(new)->d_inode
)
829 if (ovl_dentry_is_opaque(new))
830 new_type
= __OVL_PATH_UPPER
;
832 new_type
= __OVL_PATH_UPPER
| __OVL_PATH_PURE
;
835 err
= ovl_want_write(old
);
839 err
= ovl_copy_up(old
);
843 err
= ovl_copy_up(new->d_parent
);
847 err
= ovl_copy_up(new);
852 old_opaque
= !OVL_TYPE_PURE_UPPER(old_type
);
853 new_opaque
= !OVL_TYPE_PURE_UPPER(new_type
);
855 old_cred
= ovl_override_creds(old
->d_sb
);
857 if (overwrite
&& OVL_TYPE_MERGE_OR_LOWER(new_type
) && new_is_dir
) {
858 opaquedir
= ovl_check_empty_and_clear(new);
859 err
= PTR_ERR(opaquedir
);
860 if (IS_ERR(opaquedir
)) {
862 goto out_revert_creds
;
868 if (new->d_inode
|| !new_opaque
) {
869 /* Whiteout source */
870 flags
|= RENAME_WHITEOUT
;
872 /* Switch whiteouts */
873 flags
|= RENAME_EXCHANGE
;
875 } else if (is_dir
&& !new->d_inode
&& new_opaque
) {
876 flags
|= RENAME_EXCHANGE
;
877 cleanup_whiteout
= true;
881 old_upperdir
= ovl_dentry_upper(old
->d_parent
);
882 new_upperdir
= ovl_dentry_upper(new->d_parent
);
884 trap
= lock_rename(new_upperdir
, old_upperdir
);
887 olddentry
= lookup_one_len(old
->d_name
.name
, old_upperdir
,
889 err
= PTR_ERR(olddentry
);
890 if (IS_ERR(olddentry
))
894 if (olddentry
!= ovl_dentry_upper(old
))
897 newdentry
= lookup_one_len(new->d_name
.name
, new_upperdir
,
899 err
= PTR_ERR(newdentry
);
900 if (IS_ERR(newdentry
))
904 if (ovl_dentry_upper(new)) {
906 if (newdentry
!= opaquedir
)
909 if (newdentry
!= ovl_dentry_upper(new))
913 if (!d_is_negative(newdentry
) &&
914 (!new_opaque
|| !ovl_is_whiteout(newdentry
)))
918 if (olddentry
== trap
)
920 if (newdentry
== trap
)
923 if (is_dir
&& !old_opaque
&& new_opaque
) {
924 err
= ovl_set_opaque(olddentry
);
928 if (!overwrite
&& new_is_dir
&& old_opaque
&& !new_opaque
) {
929 err
= ovl_set_opaque(newdentry
);
934 if (old_opaque
|| new_opaque
) {
935 err
= ovl_do_rename(old_upperdir
->d_inode
, olddentry
,
936 new_upperdir
->d_inode
, newdentry
,
939 /* No debug for the plain case */
940 BUG_ON(flags
& ~RENAME_EXCHANGE
);
941 err
= vfs_rename(old_upperdir
->d_inode
, olddentry
,
942 new_upperdir
->d_inode
, newdentry
,
947 if (is_dir
&& !old_opaque
&& new_opaque
)
948 ovl_remove_opaque(olddentry
);
949 if (!overwrite
&& new_is_dir
&& old_opaque
&& !new_opaque
)
950 ovl_remove_opaque(newdentry
);
954 if (is_dir
&& old_opaque
&& !new_opaque
)
955 ovl_remove_opaque(olddentry
);
956 if (!overwrite
&& new_is_dir
&& !old_opaque
&& new_opaque
)
957 ovl_remove_opaque(newdentry
);
960 * Old dentry now lives in different location. Dentries in
961 * lowerstack are stale. We cannot drop them here because
962 * access to them is lockless. This could be only pure upper
963 * or opaque directory - numlower is zero. Or upper non-dir
964 * entry - its pureness is tracked by flag opaque.
966 if (old_opaque
!= new_opaque
) {
967 ovl_dentry_set_opaque(old
, new_opaque
);
969 ovl_dentry_set_opaque(new, old_opaque
);
972 if (cleanup_whiteout
)
973 ovl_cleanup(old_upperdir
->d_inode
, newdentry
);
975 ovl_dentry_version_inc(old
->d_parent
);
976 ovl_dentry_version_inc(new->d_parent
);
983 unlock_rename(new_upperdir
, old_upperdir
);
985 revert_creds(old_cred
);
993 const struct inode_operations ovl_dir_inode_operations
= {
994 .lookup
= ovl_lookup
,
996 .symlink
= ovl_symlink
,
997 .unlink
= ovl_unlink
,
999 .rename2
= ovl_rename2
,
1001 .setattr
= ovl_setattr
,
1002 .create
= ovl_create
,
1004 .permission
= ovl_permission
,
1005 .getattr
= ovl_dir_getattr
,
1006 .setxattr
= generic_setxattr
,
1007 .getxattr
= generic_getxattr
,
1008 .listxattr
= ovl_listxattr
,
1009 .removexattr
= generic_removexattr
,
1010 .get_acl
= ovl_get_acl
,
1011 .update_time
= ovl_update_time
,