4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
12 #include <linux/f2fs_fs.h>
13 #include <linux/pagemap.h>
14 #include <linux/sched.h>
15 #include <linux/ctype.h>
16 #include <linux/dcache.h>
17 #include <linux/namei.h>
23 #include <trace/events/f2fs.h>
25 static struct inode
*f2fs_new_inode(struct inode
*dir
, umode_t mode
)
27 struct f2fs_sb_info
*sbi
= F2FS_I_SB(dir
);
30 bool nid_free
= false;
33 inode
= new_inode(dir
->i_sb
);
35 return ERR_PTR(-ENOMEM
);
38 if (!alloc_nid(sbi
, &ino
)) {
45 inode_init_owner(inode
, dir
, mode
);
49 inode
->i_mtime
= inode
->i_atime
= inode
->i_ctime
= CURRENT_TIME
;
50 inode
->i_generation
= sbi
->s_next_generation
++;
52 err
= insert_inode_locked(inode
);
59 /* If the directory encrypted, then we should encrypt the inode. */
60 if (f2fs_encrypted_inode(dir
) && f2fs_may_encrypt(inode
))
61 f2fs_set_encrypted_inode(inode
);
63 if (test_opt(sbi
, INLINE_DATA
) && f2fs_may_inline_data(inode
))
64 set_inode_flag(F2FS_I(inode
), FI_INLINE_DATA
);
65 if (f2fs_may_inline_dentry(inode
))
66 set_inode_flag(F2FS_I(inode
), FI_INLINE_DENTRY
);
68 f2fs_init_extent_tree(inode
, NULL
);
70 stat_inc_inline_xattr(inode
);
71 stat_inc_inline_inode(inode
);
72 stat_inc_inline_dir(inode
);
74 trace_f2fs_new_inode(inode
, 0);
75 mark_inode_dirty(inode
);
79 trace_f2fs_new_inode(inode
, err
);
80 make_bad_inode(inode
);
82 set_inode_flag(F2FS_I(inode
), FI_FREE_NID
);
87 static int is_multimedia_file(const unsigned char *s
, const char *sub
)
89 size_t slen
= strlen(s
);
90 size_t sublen
= strlen(sub
);
93 * filename format of multimedia file should be defined as:
94 * "filename + '.' + extension".
96 if (slen
< sublen
+ 2)
99 if (s
[slen
- sublen
- 1] != '.')
102 return !strncasecmp(s
+ slen
- sublen
, sub
, sublen
);
106 * Set multimedia files as cold files for hot/cold data separation
108 static inline void set_cold_files(struct f2fs_sb_info
*sbi
, struct inode
*inode
,
109 const unsigned char *name
)
112 __u8 (*extlist
)[8] = sbi
->raw_super
->extension_list
;
114 int count
= le32_to_cpu(sbi
->raw_super
->extension_count
);
115 for (i
= 0; i
< count
; i
++) {
116 if (is_multimedia_file(name
, extlist
[i
])) {
117 file_set_cold(inode
);
123 static int f2fs_create(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
,
126 struct f2fs_sb_info
*sbi
= F2FS_I_SB(dir
);
131 inode
= f2fs_new_inode(dir
, mode
);
133 return PTR_ERR(inode
);
135 if (!test_opt(sbi
, DISABLE_EXT_IDENTIFY
))
136 set_cold_files(sbi
, inode
, dentry
->d_name
.name
);
138 inode
->i_op
= &f2fs_file_inode_operations
;
139 inode
->i_fop
= &f2fs_file_operations
;
140 inode
->i_mapping
->a_ops
= &f2fs_dblock_aops
;
143 f2fs_balance_fs(sbi
, true);
146 err
= f2fs_add_link(dentry
, inode
);
151 alloc_nid_done(sbi
, ino
);
153 d_instantiate(dentry
, inode
);
154 unlock_new_inode(inode
);
157 f2fs_sync_fs(sbi
->sb
, 1);
160 handle_failed_inode(inode
);
164 static int f2fs_link(struct dentry
*old_dentry
, struct inode
*dir
,
165 struct dentry
*dentry
)
167 struct inode
*inode
= d_inode(old_dentry
);
168 struct f2fs_sb_info
*sbi
= F2FS_I_SB(dir
);
171 if (f2fs_encrypted_inode(dir
) &&
172 !fscrypt_has_permitted_context(dir
, inode
))
175 f2fs_balance_fs(sbi
, true);
177 inode
->i_ctime
= CURRENT_TIME
;
180 set_inode_flag(F2FS_I(inode
), FI_INC_LINK
);
182 err
= f2fs_add_link(dentry
, inode
);
187 d_instantiate(dentry
, inode
);
190 f2fs_sync_fs(sbi
->sb
, 1);
193 clear_inode_flag(F2FS_I(inode
), FI_INC_LINK
);
199 struct dentry
*f2fs_get_parent(struct dentry
*child
)
201 struct qstr dotdot
= QSTR_INIT("..", 2);
202 unsigned long ino
= f2fs_inode_by_name(d_inode(child
), &dotdot
);
204 return ERR_PTR(-ENOENT
);
205 return d_obtain_alias(f2fs_iget(d_inode(child
)->i_sb
, ino
));
208 static int __recover_dot_dentries(struct inode
*dir
, nid_t pino
)
210 struct f2fs_sb_info
*sbi
= F2FS_I_SB(dir
);
211 struct qstr dot
= QSTR_INIT(".", 1);
212 struct qstr dotdot
= QSTR_INIT("..", 2);
213 struct f2fs_dir_entry
*de
;
217 if (f2fs_readonly(sbi
->sb
)) {
218 f2fs_msg(sbi
->sb
, KERN_INFO
,
219 "skip recovering inline_dots inode (ino:%lu, pino:%u) "
220 "in readonly mountpoint", dir
->i_ino
, pino
);
224 f2fs_balance_fs(sbi
, true);
228 de
= f2fs_find_entry(dir
, &dot
, &page
);
230 f2fs_dentry_kunmap(dir
, page
);
231 f2fs_put_page(page
, 0);
233 err
= __f2fs_add_link(dir
, &dot
, NULL
, dir
->i_ino
, S_IFDIR
);
238 de
= f2fs_find_entry(dir
, &dotdot
, &page
);
240 f2fs_dentry_kunmap(dir
, page
);
241 f2fs_put_page(page
, 0);
243 err
= __f2fs_add_link(dir
, &dotdot
, NULL
, pino
, S_IFDIR
);
247 clear_inode_flag(F2FS_I(dir
), FI_INLINE_DOTS
);
248 mark_inode_dirty(dir
);
255 static struct dentry
*f2fs_lookup(struct inode
*dir
, struct dentry
*dentry
,
258 struct inode
*inode
= NULL
;
259 struct f2fs_dir_entry
*de
;
263 unsigned int root_ino
= F2FS_ROOT_INO(F2FS_I_SB(dir
));
265 if (dentry
->d_name
.len
> F2FS_NAME_LEN
)
266 return ERR_PTR(-ENAMETOOLONG
);
268 de
= f2fs_find_entry(dir
, &dentry
->d_name
, &page
);
270 return d_splice_alias(inode
, dentry
);
272 ino
= le32_to_cpu(de
->ino
);
273 f2fs_dentry_kunmap(dir
, page
);
274 f2fs_put_page(page
, 0);
276 inode
= f2fs_iget(dir
->i_sb
, ino
);
278 return ERR_CAST(inode
);
280 if ((dir
->i_ino
== root_ino
) && f2fs_has_inline_dots(dir
)) {
281 err
= __recover_dot_dentries(dir
, root_ino
);
286 if (f2fs_has_inline_dots(inode
)) {
287 err
= __recover_dot_dentries(inode
, dir
->i_ino
);
291 return d_splice_alias(inode
, dentry
);
298 static int f2fs_unlink(struct inode
*dir
, struct dentry
*dentry
)
300 struct f2fs_sb_info
*sbi
= F2FS_I_SB(dir
);
301 struct inode
*inode
= d_inode(dentry
);
302 struct f2fs_dir_entry
*de
;
306 trace_f2fs_unlink_enter(dir
, dentry
);
308 de
= f2fs_find_entry(dir
, &dentry
->d_name
, &page
);
312 f2fs_balance_fs(sbi
, true);
315 err
= acquire_orphan_inode(sbi
);
318 f2fs_dentry_kunmap(dir
, page
);
319 f2fs_put_page(page
, 0);
322 f2fs_delete_entry(de
, page
, dir
, inode
);
325 /* In order to evict this inode, we set it dirty */
326 mark_inode_dirty(inode
);
329 f2fs_sync_fs(sbi
->sb
, 1);
331 trace_f2fs_unlink_exit(inode
, err
);
335 static const char *f2fs_get_link(struct dentry
*dentry
,
337 struct delayed_call
*done
)
339 const char *link
= page_get_link(dentry
, inode
, done
);
340 if (!IS_ERR(link
) && !*link
) {
341 /* this is broken symlink case */
342 do_delayed_call(done
);
343 clear_delayed_call(done
);
344 link
= ERR_PTR(-ENOENT
);
349 static int f2fs_symlink(struct inode
*dir
, struct dentry
*dentry
,
352 struct f2fs_sb_info
*sbi
= F2FS_I_SB(dir
);
354 size_t len
= strlen(symname
);
355 struct fscrypt_str disk_link
= FSTR_INIT((char *)symname
, len
+ 1);
356 struct fscrypt_symlink_data
*sd
= NULL
;
359 if (f2fs_encrypted_inode(dir
)) {
360 err
= fscrypt_get_encryption_info(dir
);
364 if (!fscrypt_has_encryption_key(dir
))
367 disk_link
.len
= (fscrypt_fname_encrypted_size(dir
, len
) +
368 sizeof(struct fscrypt_symlink_data
));
371 if (disk_link
.len
> dir
->i_sb
->s_blocksize
)
372 return -ENAMETOOLONG
;
374 inode
= f2fs_new_inode(dir
, S_IFLNK
| S_IRWXUGO
);
376 return PTR_ERR(inode
);
378 if (f2fs_encrypted_inode(inode
))
379 inode
->i_op
= &f2fs_encrypted_symlink_inode_operations
;
381 inode
->i_op
= &f2fs_symlink_inode_operations
;
382 inode_nohighmem(inode
);
383 inode
->i_mapping
->a_ops
= &f2fs_dblock_aops
;
385 f2fs_balance_fs(sbi
, true);
388 err
= f2fs_add_link(dentry
, inode
);
392 alloc_nid_done(sbi
, inode
->i_ino
);
394 if (f2fs_encrypted_inode(inode
)) {
395 struct qstr istr
= QSTR_INIT(symname
, len
);
396 struct fscrypt_str ostr
;
398 sd
= kzalloc(disk_link
.len
, GFP_NOFS
);
404 err
= fscrypt_get_encryption_info(inode
);
408 if (!fscrypt_has_encryption_key(inode
)) {
413 ostr
.name
= sd
->encrypted_path
;
414 ostr
.len
= disk_link
.len
;
415 err
= fscrypt_fname_usr_to_disk(inode
, &istr
, &ostr
);
419 sd
->len
= cpu_to_le16(ostr
.len
);
420 disk_link
.name
= (char *)sd
;
423 err
= page_symlink(inode
, disk_link
.name
, disk_link
.len
);
426 d_instantiate(dentry
, inode
);
427 unlock_new_inode(inode
);
430 * Let's flush symlink data in order to avoid broken symlink as much as
431 * possible. Nevertheless, fsyncing is the best way, but there is no
432 * way to get a file descriptor in order to flush that.
434 * Note that, it needs to do dir->fsync to make this recoverable.
435 * If the symlink path is stored into inline_data, there is no
436 * performance regression.
439 filemap_write_and_wait_range(inode
->i_mapping
, 0,
443 f2fs_sync_fs(sbi
->sb
, 1);
445 f2fs_unlink(dir
, dentry
);
451 handle_failed_inode(inode
);
455 static int f2fs_mkdir(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
)
457 struct f2fs_sb_info
*sbi
= F2FS_I_SB(dir
);
461 inode
= f2fs_new_inode(dir
, S_IFDIR
| mode
);
463 return PTR_ERR(inode
);
465 inode
->i_op
= &f2fs_dir_inode_operations
;
466 inode
->i_fop
= &f2fs_dir_operations
;
467 inode
->i_mapping
->a_ops
= &f2fs_dblock_aops
;
468 mapping_set_gfp_mask(inode
->i_mapping
, GFP_F2FS_HIGH_ZERO
);
470 f2fs_balance_fs(sbi
, true);
472 set_inode_flag(F2FS_I(inode
), FI_INC_LINK
);
474 err
= f2fs_add_link(dentry
, inode
);
479 alloc_nid_done(sbi
, inode
->i_ino
);
481 d_instantiate(dentry
, inode
);
482 unlock_new_inode(inode
);
485 f2fs_sync_fs(sbi
->sb
, 1);
489 clear_inode_flag(F2FS_I(inode
), FI_INC_LINK
);
490 handle_failed_inode(inode
);
494 static int f2fs_rmdir(struct inode
*dir
, struct dentry
*dentry
)
496 struct inode
*inode
= d_inode(dentry
);
497 if (f2fs_empty_dir(inode
))
498 return f2fs_unlink(dir
, dentry
);
502 static int f2fs_mknod(struct inode
*dir
, struct dentry
*dentry
,
503 umode_t mode
, dev_t rdev
)
505 struct f2fs_sb_info
*sbi
= F2FS_I_SB(dir
);
509 inode
= f2fs_new_inode(dir
, mode
);
511 return PTR_ERR(inode
);
513 init_special_inode(inode
, inode
->i_mode
, rdev
);
514 inode
->i_op
= &f2fs_special_inode_operations
;
516 f2fs_balance_fs(sbi
, true);
519 err
= f2fs_add_link(dentry
, inode
);
524 alloc_nid_done(sbi
, inode
->i_ino
);
526 d_instantiate(dentry
, inode
);
527 unlock_new_inode(inode
);
530 f2fs_sync_fs(sbi
->sb
, 1);
533 handle_failed_inode(inode
);
537 static int __f2fs_tmpfile(struct inode
*dir
, struct dentry
*dentry
,
538 umode_t mode
, struct inode
**whiteout
)
540 struct f2fs_sb_info
*sbi
= F2FS_I_SB(dir
);
544 inode
= f2fs_new_inode(dir
, mode
);
546 return PTR_ERR(inode
);
549 init_special_inode(inode
, inode
->i_mode
, WHITEOUT_DEV
);
550 inode
->i_op
= &f2fs_special_inode_operations
;
552 inode
->i_op
= &f2fs_file_inode_operations
;
553 inode
->i_fop
= &f2fs_file_operations
;
554 inode
->i_mapping
->a_ops
= &f2fs_dblock_aops
;
557 f2fs_balance_fs(sbi
, true);
560 err
= acquire_orphan_inode(sbi
);
564 err
= f2fs_do_tmpfile(inode
, dir
);
569 * add this non-linked tmpfile to orphan list, in this way we could
570 * remove all unused data of tmpfile after abnormal power-off.
572 add_orphan_inode(sbi
, inode
->i_ino
);
575 alloc_nid_done(sbi
, inode
->i_ino
);
578 inode_dec_link_count(inode
);
581 d_tmpfile(dentry
, inode
);
583 unlock_new_inode(inode
);
587 release_orphan_inode(sbi
);
589 handle_failed_inode(inode
);
593 static int f2fs_tmpfile(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
)
595 if (f2fs_encrypted_inode(dir
)) {
596 int err
= fscrypt_get_encryption_info(dir
);
601 return __f2fs_tmpfile(dir
, dentry
, mode
, NULL
);
604 static int f2fs_create_whiteout(struct inode
*dir
, struct inode
**whiteout
)
606 return __f2fs_tmpfile(dir
, NULL
, S_IFCHR
| WHITEOUT_MODE
, whiteout
);
609 static int f2fs_rename(struct inode
*old_dir
, struct dentry
*old_dentry
,
610 struct inode
*new_dir
, struct dentry
*new_dentry
,
613 struct f2fs_sb_info
*sbi
= F2FS_I_SB(old_dir
);
614 struct inode
*old_inode
= d_inode(old_dentry
);
615 struct inode
*new_inode
= d_inode(new_dentry
);
616 struct inode
*whiteout
= NULL
;
617 struct page
*old_dir_page
;
618 struct page
*old_page
, *new_page
= NULL
;
619 struct f2fs_dir_entry
*old_dir_entry
= NULL
;
620 struct f2fs_dir_entry
*old_entry
;
621 struct f2fs_dir_entry
*new_entry
;
622 bool is_old_inline
= f2fs_has_inline_dentry(old_dir
);
625 if ((old_dir
!= new_dir
) && f2fs_encrypted_inode(new_dir
) &&
626 !fscrypt_has_permitted_context(new_dir
, old_inode
)) {
631 old_entry
= f2fs_find_entry(old_dir
, &old_dentry
->d_name
, &old_page
);
635 if (S_ISDIR(old_inode
->i_mode
)) {
637 old_dir_entry
= f2fs_parent_dir(old_inode
, &old_dir_page
);
642 if (flags
& RENAME_WHITEOUT
) {
643 err
= f2fs_create_whiteout(old_dir
, &whiteout
);
651 if (old_dir_entry
&& !f2fs_empty_dir(new_inode
))
655 new_entry
= f2fs_find_entry(new_dir
, &new_dentry
->d_name
,
660 f2fs_balance_fs(sbi
, true);
664 err
= acquire_orphan_inode(sbi
);
668 err
= update_dent_inode(old_inode
, new_inode
,
669 &new_dentry
->d_name
);
671 release_orphan_inode(sbi
);
675 f2fs_set_link(new_dir
, new_entry
, new_page
, old_inode
);
677 new_inode
->i_ctime
= CURRENT_TIME
;
678 down_write(&F2FS_I(new_inode
)->i_sem
);
680 drop_nlink(new_inode
);
681 drop_nlink(new_inode
);
682 up_write(&F2FS_I(new_inode
)->i_sem
);
684 mark_inode_dirty(new_inode
);
686 if (!new_inode
->i_nlink
)
687 add_orphan_inode(sbi
, new_inode
->i_ino
);
689 release_orphan_inode(sbi
);
691 update_inode_page(old_inode
);
692 update_inode_page(new_inode
);
694 f2fs_balance_fs(sbi
, true);
698 err
= f2fs_add_link(new_dentry
, old_inode
);
706 update_inode_page(new_dir
);
710 * old entry and new entry can locate in the same inline
711 * dentry in inode, when attaching new entry in inline dentry,
712 * it could force inline dentry conversion, after that,
713 * old_entry and old_page will point to wrong address, in
714 * order to avoid this, let's do the check and update here.
716 if (is_old_inline
&& !f2fs_has_inline_dentry(old_dir
)) {
717 f2fs_put_page(old_page
, 0);
720 old_entry
= f2fs_find_entry(old_dir
,
721 &old_dentry
->d_name
, &old_page
);
730 down_write(&F2FS_I(old_inode
)->i_sem
);
731 file_lost_pino(old_inode
);
732 if (new_inode
&& file_enc_name(new_inode
))
733 file_set_enc_name(old_inode
);
734 up_write(&F2FS_I(old_inode
)->i_sem
);
736 old_inode
->i_ctime
= CURRENT_TIME
;
737 mark_inode_dirty(old_inode
);
739 f2fs_delete_entry(old_entry
, old_page
, old_dir
, NULL
);
742 whiteout
->i_state
|= I_LINKABLE
;
743 set_inode_flag(F2FS_I(whiteout
), FI_INC_LINK
);
744 err
= f2fs_add_link(old_dentry
, whiteout
);
747 whiteout
->i_state
&= ~I_LINKABLE
;
752 if (old_dir
!= new_dir
&& !whiteout
) {
753 f2fs_set_link(old_inode
, old_dir_entry
,
754 old_dir_page
, new_dir
);
755 update_inode_page(old_inode
);
757 f2fs_dentry_kunmap(old_inode
, old_dir_page
);
758 f2fs_put_page(old_dir_page
, 0);
761 mark_inode_dirty(old_dir
);
762 update_inode_page(old_dir
);
767 if (IS_DIRSYNC(old_dir
) || IS_DIRSYNC(new_dir
))
768 f2fs_sync_fs(sbi
->sb
, 1);
774 f2fs_dentry_kunmap(new_dir
, new_page
);
775 f2fs_put_page(new_page
, 0);
782 f2fs_dentry_kunmap(old_inode
, old_dir_page
);
783 f2fs_put_page(old_dir_page
, 0);
786 f2fs_dentry_kunmap(old_dir
, old_page
);
787 f2fs_put_page(old_page
, 0);
792 static int f2fs_cross_rename(struct inode
*old_dir
, struct dentry
*old_dentry
,
793 struct inode
*new_dir
, struct dentry
*new_dentry
)
795 struct f2fs_sb_info
*sbi
= F2FS_I_SB(old_dir
);
796 struct inode
*old_inode
= d_inode(old_dentry
);
797 struct inode
*new_inode
= d_inode(new_dentry
);
798 struct page
*old_dir_page
, *new_dir_page
;
799 struct page
*old_page
, *new_page
;
800 struct f2fs_dir_entry
*old_dir_entry
= NULL
, *new_dir_entry
= NULL
;
801 struct f2fs_dir_entry
*old_entry
, *new_entry
;
802 int old_nlink
= 0, new_nlink
= 0;
805 if ((f2fs_encrypted_inode(old_dir
) || f2fs_encrypted_inode(new_dir
)) &&
806 (old_dir
!= new_dir
) &&
807 (!fscrypt_has_permitted_context(new_dir
, old_inode
) ||
808 !fscrypt_has_permitted_context(old_dir
, new_inode
)))
811 old_entry
= f2fs_find_entry(old_dir
, &old_dentry
->d_name
, &old_page
);
815 new_entry
= f2fs_find_entry(new_dir
, &new_dentry
->d_name
, &new_page
);
819 /* prepare for updating ".." directory entry info later */
820 if (old_dir
!= new_dir
) {
821 if (S_ISDIR(old_inode
->i_mode
)) {
823 old_dir_entry
= f2fs_parent_dir(old_inode
,
829 if (S_ISDIR(new_inode
->i_mode
)) {
831 new_dir_entry
= f2fs_parent_dir(new_inode
,
839 * If cross rename between file and directory those are not
840 * in the same directory, we will inc nlink of file's parent
841 * later, so we should check upper boundary of its nlink.
843 if ((!old_dir_entry
|| !new_dir_entry
) &&
844 old_dir_entry
!= new_dir_entry
) {
845 old_nlink
= old_dir_entry
? -1 : 1;
846 new_nlink
= -old_nlink
;
848 if ((old_nlink
> 0 && old_inode
->i_nlink
>= F2FS_LINK_MAX
) ||
849 (new_nlink
> 0 && new_inode
->i_nlink
>= F2FS_LINK_MAX
))
853 f2fs_balance_fs(sbi
, true);
857 err
= update_dent_inode(old_inode
, new_inode
, &new_dentry
->d_name
);
860 if (file_enc_name(new_inode
))
861 file_set_enc_name(old_inode
);
863 err
= update_dent_inode(new_inode
, old_inode
, &old_dentry
->d_name
);
866 if (file_enc_name(old_inode
))
867 file_set_enc_name(new_inode
);
869 /* update ".." directory entry info of old dentry */
871 f2fs_set_link(old_inode
, old_dir_entry
, old_dir_page
, new_dir
);
873 /* update ".." directory entry info of new dentry */
875 f2fs_set_link(new_inode
, new_dir_entry
, new_dir_page
, old_dir
);
877 /* update directory entry info of old dir inode */
878 f2fs_set_link(old_dir
, old_entry
, old_page
, new_inode
);
880 down_write(&F2FS_I(old_inode
)->i_sem
);
881 file_lost_pino(old_inode
);
882 up_write(&F2FS_I(old_inode
)->i_sem
);
884 update_inode_page(old_inode
);
886 old_dir
->i_ctime
= CURRENT_TIME
;
888 down_write(&F2FS_I(old_dir
)->i_sem
);
893 up_write(&F2FS_I(old_dir
)->i_sem
);
895 mark_inode_dirty(old_dir
);
896 update_inode_page(old_dir
);
898 /* update directory entry info of new dir inode */
899 f2fs_set_link(new_dir
, new_entry
, new_page
, old_inode
);
901 down_write(&F2FS_I(new_inode
)->i_sem
);
902 file_lost_pino(new_inode
);
903 up_write(&F2FS_I(new_inode
)->i_sem
);
905 update_inode_page(new_inode
);
907 new_dir
->i_ctime
= CURRENT_TIME
;
909 down_write(&F2FS_I(new_dir
)->i_sem
);
914 up_write(&F2FS_I(new_dir
)->i_sem
);
916 mark_inode_dirty(new_dir
);
917 update_inode_page(new_dir
);
921 if (IS_DIRSYNC(old_dir
) || IS_DIRSYNC(new_dir
))
922 f2fs_sync_fs(sbi
->sb
, 1);
926 * Still we may fail to recover name info of f2fs_inode here
927 * Drop it, once its name is set as encrypted
929 update_dent_inode(old_inode
, old_inode
, &old_dentry
->d_name
);
934 f2fs_dentry_kunmap(new_inode
, new_dir_page
);
935 f2fs_put_page(new_dir_page
, 0);
939 f2fs_dentry_kunmap(old_inode
, old_dir_page
);
940 f2fs_put_page(old_dir_page
, 0);
943 f2fs_dentry_kunmap(new_dir
, new_page
);
944 f2fs_put_page(new_page
, 0);
946 f2fs_dentry_kunmap(old_dir
, old_page
);
947 f2fs_put_page(old_page
, 0);
952 static int f2fs_rename2(struct inode
*old_dir
, struct dentry
*old_dentry
,
953 struct inode
*new_dir
, struct dentry
*new_dentry
,
956 if (flags
& ~(RENAME_NOREPLACE
| RENAME_EXCHANGE
| RENAME_WHITEOUT
))
959 if (flags
& RENAME_EXCHANGE
) {
960 return f2fs_cross_rename(old_dir
, old_dentry
,
961 new_dir
, new_dentry
);
964 * VFS has already handled the new dentry existence case,
965 * here, we just deal with "RENAME_NOREPLACE" as regular rename.
967 return f2fs_rename(old_dir
, old_dentry
, new_dir
, new_dentry
, flags
);
970 static const char *f2fs_encrypted_get_link(struct dentry
*dentry
,
972 struct delayed_call
*done
)
974 struct page
*cpage
= NULL
;
975 char *caddr
, *paddr
= NULL
;
976 struct fscrypt_str cstr
= FSTR_INIT(NULL
, 0);
977 struct fscrypt_str pstr
= FSTR_INIT(NULL
, 0);
978 struct fscrypt_symlink_data
*sd
;
979 loff_t size
= min_t(loff_t
, i_size_read(inode
), PAGE_SIZE
- 1);
980 u32 max_size
= inode
->i_sb
->s_blocksize
;
984 return ERR_PTR(-ECHILD
);
986 res
= fscrypt_get_encryption_info(inode
);
990 cpage
= read_mapping_page(inode
->i_mapping
, 0, NULL
);
992 return ERR_CAST(cpage
);
993 caddr
= page_address(cpage
);
996 /* Symlink is encrypted */
997 sd
= (struct fscrypt_symlink_data
*)caddr
;
998 cstr
.name
= sd
->encrypted_path
;
999 cstr
.len
= le16_to_cpu(sd
->len
);
1001 /* this is broken symlink case */
1002 if (unlikely(cstr
.len
== 0)) {
1007 /* this is broken symlink case */
1008 if (unlikely(cstr
.name
[0] == 0)) {
1013 if ((cstr
.len
+ sizeof(struct fscrypt_symlink_data
) - 1) > max_size
) {
1014 /* Symlink data on the disk is corrupted */
1018 res
= fscrypt_fname_alloc_buffer(inode
, cstr
.len
, &pstr
);
1022 res
= fscrypt_fname_disk_to_usr(inode
, 0, 0, &cstr
, &pstr
);
1028 /* Null-terminate the name */
1031 page_cache_release(cpage
);
1032 set_delayed_call(done
, kfree_link
, paddr
);
1035 fscrypt_fname_free_buffer(&pstr
);
1036 page_cache_release(cpage
);
1037 return ERR_PTR(res
);
1040 const struct inode_operations f2fs_encrypted_symlink_inode_operations
= {
1041 .readlink
= generic_readlink
,
1042 .get_link
= f2fs_encrypted_get_link
,
1043 .getattr
= f2fs_getattr
,
1044 .setattr
= f2fs_setattr
,
1045 #ifdef CONFIG_F2FS_FS_XATTR
1046 .setxattr
= generic_setxattr
,
1047 .getxattr
= generic_getxattr
,
1048 .listxattr
= f2fs_listxattr
,
1049 .removexattr
= generic_removexattr
,
1053 const struct inode_operations f2fs_dir_inode_operations
= {
1054 .create
= f2fs_create
,
1055 .lookup
= f2fs_lookup
,
1057 .unlink
= f2fs_unlink
,
1058 .symlink
= f2fs_symlink
,
1059 .mkdir
= f2fs_mkdir
,
1060 .rmdir
= f2fs_rmdir
,
1061 .mknod
= f2fs_mknod
,
1062 .rename2
= f2fs_rename2
,
1063 .tmpfile
= f2fs_tmpfile
,
1064 .getattr
= f2fs_getattr
,
1065 .setattr
= f2fs_setattr
,
1066 .get_acl
= f2fs_get_acl
,
1067 .set_acl
= f2fs_set_acl
,
1068 #ifdef CONFIG_F2FS_FS_XATTR
1069 .setxattr
= generic_setxattr
,
1070 .getxattr
= generic_getxattr
,
1071 .listxattr
= f2fs_listxattr
,
1072 .removexattr
= generic_removexattr
,
1076 const struct inode_operations f2fs_symlink_inode_operations
= {
1077 .readlink
= generic_readlink
,
1078 .get_link
= f2fs_get_link
,
1079 .getattr
= f2fs_getattr
,
1080 .setattr
= f2fs_setattr
,
1081 #ifdef CONFIG_F2FS_FS_XATTR
1082 .setxattr
= generic_setxattr
,
1083 .getxattr
= generic_getxattr
,
1084 .listxattr
= f2fs_listxattr
,
1085 .removexattr
= generic_removexattr
,
1089 const struct inode_operations f2fs_special_inode_operations
= {
1090 .getattr
= f2fs_getattr
,
1091 .setattr
= f2fs_setattr
,
1092 .get_acl
= f2fs_get_acl
,
1093 .set_acl
= f2fs_set_acl
,
1094 #ifdef CONFIG_F2FS_FS_XATTR
1095 .setxattr
= generic_setxattr
,
1096 .getxattr
= generic_getxattr
,
1097 .listxattr
= f2fs_listxattr
,
1098 .removexattr
= generic_removexattr
,