1 // SPDX-License-Identifier: GPL-2.0
5 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
6 * http://www.samsung.com/
9 #include <linux/f2fs_fs.h>
10 #include <linux/pagemap.h>
11 #include <linux/sched.h>
12 #include <linux/ctype.h>
13 #include <linux/random.h>
14 #include <linux/dcache.h>
15 #include <linux/namei.h>
16 #include <linux/quotaops.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;
34 inode = new_inode(dir->i_sb);
36 return ERR_PTR(-ENOMEM);
39 if (!f2fs_alloc_nid(sbi, &ino)) {
48 inode_init_owner(inode, dir, mode);
52 inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
53 F2FS_I(inode)->i_crtime = inode->i_mtime;
54 inode->i_generation = prandom_u32();
56 if (S_ISDIR(inode->i_mode))
57 F2FS_I(inode)->i_current_depth = 1;
59 err = insert_inode_locked(inode);
65 if (f2fs_sb_has_project_quota(sbi) &&
66 (F2FS_I(dir)->i_flags & F2FS_PROJINHERIT_FL))
67 F2FS_I(inode)->i_projid = F2FS_I(dir)->i_projid;
69 F2FS_I(inode)->i_projid = make_kprojid(&init_user_ns,
72 err = dquot_initialize(inode);
76 set_inode_flag(inode, FI_NEW_INODE);
78 /* If the directory encrypted, then we should encrypt the inode. */
79 if ((IS_ENCRYPTED(dir) || DUMMY_ENCRYPTION_ENABLED(sbi)) &&
80 f2fs_may_encrypt(inode))
81 f2fs_set_encrypted_inode(inode);
83 if (f2fs_sb_has_extra_attr(sbi)) {
84 set_inode_flag(inode, FI_EXTRA_ATTR);
85 F2FS_I(inode)->i_extra_isize = F2FS_TOTAL_EXTRA_ATTR_SIZE;
88 if (test_opt(sbi, INLINE_XATTR))
89 set_inode_flag(inode, FI_INLINE_XATTR);
91 if (test_opt(sbi, INLINE_DATA) && f2fs_may_inline_data(inode))
92 set_inode_flag(inode, FI_INLINE_DATA);
93 if (f2fs_may_inline_dentry(inode))
94 set_inode_flag(inode, FI_INLINE_DENTRY);
96 if (f2fs_sb_has_flexible_inline_xattr(sbi)) {
97 f2fs_bug_on(sbi, !f2fs_has_extra_attr(inode));
98 if (f2fs_has_inline_xattr(inode))
99 xattr_size = F2FS_OPTION(sbi).inline_xattr_size;
100 /* Otherwise, will be 0 */
101 } else if (f2fs_has_inline_xattr(inode) ||
102 f2fs_has_inline_dentry(inode)) {
103 xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
105 F2FS_I(inode)->i_inline_xattr_size = xattr_size;
107 f2fs_init_extent_tree(inode, NULL);
109 stat_inc_inline_xattr(inode);
110 stat_inc_inline_inode(inode);
111 stat_inc_inline_dir(inode);
113 F2FS_I(inode)->i_flags =
114 f2fs_mask_flags(mode, F2FS_I(dir)->i_flags & F2FS_FL_INHERITED);
116 if (S_ISDIR(inode->i_mode))
117 F2FS_I(inode)->i_flags |= F2FS_INDEX_FL;
119 if (F2FS_I(inode)->i_flags & F2FS_PROJINHERIT_FL)
120 set_inode_flag(inode, FI_PROJ_INHERIT);
122 f2fs_set_inode_flags(inode);
124 trace_f2fs_new_inode(inode, 0);
128 trace_f2fs_new_inode(inode, err);
129 make_bad_inode(inode);
131 set_inode_flag(inode, FI_FREE_NID);
135 trace_f2fs_new_inode(inode, err);
137 inode->i_flags |= S_NOQUOTA;
139 set_inode_flag(inode, FI_FREE_NID);
141 unlock_new_inode(inode);
146 static inline int is_extension_exist(const unsigned char *s, const char *sub)
148 size_t slen = strlen(s);
149 size_t sublen = strlen(sub);
153 * filename format of multimedia file should be defined as:
154 * "filename + '.' + extension + (optional: '.' + temp extension)".
156 if (slen < sublen + 2)
159 for (i = 1; i < slen - sublen; i++) {
162 if (!strncasecmp(s + i + 1, sub, sublen))
170 * Set multimedia files as cold files for hot/cold data separation
172 static inline void set_file_temperature(struct f2fs_sb_info *sbi, struct inode *inode,
173 const unsigned char *name)
175 __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
176 int i, cold_count, hot_count;
178 down_read(&sbi->sb_lock);
180 cold_count = le32_to_cpu(sbi->raw_super->extension_count);
181 hot_count = sbi->raw_super->hot_ext_count;
183 for (i = 0; i < cold_count + hot_count; i++) {
184 if (is_extension_exist(name, extlist[i]))
188 up_read(&sbi->sb_lock);
190 if (i == cold_count + hot_count)
194 file_set_cold(inode);
199 int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
202 __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
203 int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
204 int hot_count = sbi->raw_super->hot_ext_count;
205 int total_count = cold_count + hot_count;
210 if (total_count == F2FS_MAX_EXTENSION)
213 if (!hot && !cold_count)
215 if (hot && !hot_count)
227 for (i = start; i < count; i++) {
228 if (strcmp(name, extlist[i]))
234 memcpy(extlist[i], extlist[i + 1],
235 F2FS_EXTENSION_LEN * (total_count - i - 1));
236 memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN);
238 sbi->raw_super->hot_ext_count = hot_count - 1;
240 sbi->raw_super->extension_count =
241 cpu_to_le32(cold_count - 1);
249 memcpy(extlist[count], name, strlen(name));
250 sbi->raw_super->hot_ext_count = hot_count + 1;
252 char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN];
254 memcpy(buf, &extlist[cold_count],
255 F2FS_EXTENSION_LEN * hot_count);
256 memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN);
257 memcpy(extlist[cold_count], name, strlen(name));
258 memcpy(&extlist[cold_count + 1], buf,
259 F2FS_EXTENSION_LEN * hot_count);
260 sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1);
265 static int f2fs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
268 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
273 if (unlikely(f2fs_cp_error(sbi)))
275 if (!f2fs_is_checkpoint_ready(sbi))
278 err = dquot_initialize(dir);
282 inode = f2fs_new_inode(dir, mode);
284 return PTR_ERR(inode);
286 if (!test_opt(sbi, DISABLE_EXT_IDENTIFY))
287 set_file_temperature(sbi, inode, dentry->d_name.name);
289 inode->i_op = &f2fs_file_inode_operations;
290 inode->i_fop = &f2fs_file_operations;
291 inode->i_mapping->a_ops = &f2fs_dblock_aops;
295 err = f2fs_add_link(dentry, inode);
300 f2fs_alloc_nid_done(sbi, ino);
302 d_instantiate_new(dentry, inode);
305 f2fs_sync_fs(sbi->sb, 1);
307 f2fs_balance_fs(sbi, true);
310 f2fs_handle_failed_inode(inode);
314 static int f2fs_link(struct dentry *old_dentry, struct inode *dir,
315 struct dentry *dentry)
317 struct inode *inode = d_inode(old_dentry);
318 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
321 if (unlikely(f2fs_cp_error(sbi)))
323 if (!f2fs_is_checkpoint_ready(sbi))
326 err = fscrypt_prepare_link(old_dentry, dir, dentry);
330 if (is_inode_flag_set(dir, FI_PROJ_INHERIT) &&
331 (!projid_eq(F2FS_I(dir)->i_projid,
332 F2FS_I(old_dentry->d_inode)->i_projid)))
335 err = dquot_initialize(dir);
339 f2fs_balance_fs(sbi, true);
341 inode->i_ctime = current_time(inode);
344 set_inode_flag(inode, FI_INC_LINK);
346 err = f2fs_add_link(dentry, inode);
351 d_instantiate(dentry, inode);
354 f2fs_sync_fs(sbi->sb, 1);
357 clear_inode_flag(inode, FI_INC_LINK);
363 struct dentry *f2fs_get_parent(struct dentry *child)
365 struct qstr dotdot = QSTR_INIT("..", 2);
367 unsigned long ino = f2fs_inode_by_name(d_inode(child), &dotdot, &page);
370 return ERR_CAST(page);
371 return ERR_PTR(-ENOENT);
373 return d_obtain_alias(f2fs_iget(child->d_sb, ino));
376 static int __recover_dot_dentries(struct inode *dir, nid_t pino)
378 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
379 struct qstr dot = QSTR_INIT(".", 1);
380 struct qstr dotdot = QSTR_INIT("..", 2);
381 struct f2fs_dir_entry *de;
385 if (f2fs_readonly(sbi->sb)) {
386 f2fs_info(sbi, "skip recovering inline_dots inode (ino:%lu, pino:%u) in readonly mountpoint",
391 err = dquot_initialize(dir);
395 f2fs_balance_fs(sbi, true);
399 de = f2fs_find_entry(dir, &dot, &page);
401 f2fs_put_page(page, 0);
402 } else if (IS_ERR(page)) {
406 err = f2fs_do_add_link(dir, &dot, NULL, dir->i_ino, S_IFDIR);
411 de = f2fs_find_entry(dir, &dotdot, &page);
413 f2fs_put_page(page, 0);
414 else if (IS_ERR(page))
417 err = f2fs_do_add_link(dir, &dotdot, NULL, pino, S_IFDIR);
420 clear_inode_flag(dir, FI_INLINE_DOTS);
426 static struct dentry *f2fs_lookup(struct inode *dir, struct dentry *dentry,
429 struct inode *inode = NULL;
430 struct f2fs_dir_entry *de;
435 unsigned int root_ino = F2FS_ROOT_INO(F2FS_I_SB(dir));
436 struct fscrypt_name fname;
438 trace_f2fs_lookup_start(dir, dentry, flags);
440 if (dentry->d_name.len > F2FS_NAME_LEN) {
445 err = fscrypt_prepare_lookup(dir, dentry, &fname);
450 de = __f2fs_find_entry(dir, &fname, &page);
451 fscrypt_free_filename(&fname);
461 ino = le32_to_cpu(de->ino);
462 f2fs_put_page(page, 0);
464 inode = f2fs_iget(dir->i_sb, ino);
466 err = PTR_ERR(inode);
470 if ((dir->i_ino == root_ino) && f2fs_has_inline_dots(dir)) {
471 err = __recover_dot_dentries(dir, root_ino);
476 if (f2fs_has_inline_dots(inode)) {
477 err = __recover_dot_dentries(inode, dir->i_ino);
481 if (IS_ENCRYPTED(dir) &&
482 (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode)) &&
483 !fscrypt_has_permitted_context(dir, inode)) {
484 f2fs_warn(F2FS_I_SB(inode), "Inconsistent encryption contexts: %lu/%lu",
485 dir->i_ino, inode->i_ino);
490 #ifdef CONFIG_UNICODE
491 if (!inode && IS_CASEFOLDED(dir)) {
492 /* Eventually we want to call d_add_ci(dentry, NULL)
493 * for negative dentries in the encoding case as
494 * well. For now, prevent the negative dentry
497 trace_f2fs_lookup_end(dir, dentry, ino, err);
501 new = d_splice_alias(inode, dentry);
502 err = PTR_ERR_OR_ZERO(new);
503 trace_f2fs_lookup_end(dir, dentry, ino, err);
508 trace_f2fs_lookup_end(dir, dentry, ino, err);
512 static int f2fs_unlink(struct inode *dir, struct dentry *dentry)
514 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
515 struct inode *inode = d_inode(dentry);
516 struct f2fs_dir_entry *de;
520 trace_f2fs_unlink_enter(dir, dentry);
522 if (unlikely(f2fs_cp_error(sbi)))
525 err = dquot_initialize(dir);
528 err = dquot_initialize(inode);
532 de = f2fs_find_entry(dir, &dentry->d_name, &page);
539 f2fs_balance_fs(sbi, true);
542 err = f2fs_acquire_orphan_inode(sbi);
545 f2fs_put_page(page, 0);
548 f2fs_delete_entry(de, page, dir, inode);
549 #ifdef CONFIG_UNICODE
550 /* VFS negative dentries are incompatible with Encoding and
551 * Case-insensitiveness. Eventually we'll want avoid
552 * invalidating the dentries here, alongside with returning the
553 * negative dentries at f2fs_lookup(), when it is better
554 * supported by the VFS for the CI case.
556 if (IS_CASEFOLDED(dir))
557 d_invalidate(dentry);
562 f2fs_sync_fs(sbi->sb, 1);
564 trace_f2fs_unlink_exit(inode, err);
568 static const char *f2fs_get_link(struct dentry *dentry,
570 struct delayed_call *done)
572 const char *link = page_get_link(dentry, inode, done);
573 if (!IS_ERR(link) && !*link) {
574 /* this is broken symlink case */
575 do_delayed_call(done);
576 clear_delayed_call(done);
577 link = ERR_PTR(-ENOENT);
582 static int f2fs_symlink(struct inode *dir, struct dentry *dentry,
585 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
587 size_t len = strlen(symname);
588 struct fscrypt_str disk_link;
591 if (unlikely(f2fs_cp_error(sbi)))
593 if (!f2fs_is_checkpoint_ready(sbi))
596 err = fscrypt_prepare_symlink(dir, symname, len, dir->i_sb->s_blocksize,
601 err = dquot_initialize(dir);
605 inode = f2fs_new_inode(dir, S_IFLNK | S_IRWXUGO);
607 return PTR_ERR(inode);
609 if (IS_ENCRYPTED(inode))
610 inode->i_op = &f2fs_encrypted_symlink_inode_operations;
612 inode->i_op = &f2fs_symlink_inode_operations;
613 inode_nohighmem(inode);
614 inode->i_mapping->a_ops = &f2fs_dblock_aops;
617 err = f2fs_add_link(dentry, inode);
619 goto out_f2fs_handle_failed_inode;
621 f2fs_alloc_nid_done(sbi, inode->i_ino);
623 err = fscrypt_encrypt_symlink(inode, symname, len, &disk_link);
627 err = page_symlink(inode, disk_link.name, disk_link.len);
630 d_instantiate_new(dentry, inode);
633 * Let's flush symlink data in order to avoid broken symlink as much as
634 * possible. Nevertheless, fsyncing is the best way, but there is no
635 * way to get a file descriptor in order to flush that.
637 * Note that, it needs to do dir->fsync to make this recoverable.
638 * If the symlink path is stored into inline_data, there is no
639 * performance regression.
642 filemap_write_and_wait_range(inode->i_mapping, 0,
646 f2fs_sync_fs(sbi->sb, 1);
648 f2fs_unlink(dir, dentry);
651 f2fs_balance_fs(sbi, true);
652 goto out_free_encrypted_link;
654 out_f2fs_handle_failed_inode:
655 f2fs_handle_failed_inode(inode);
656 out_free_encrypted_link:
657 if (disk_link.name != (unsigned char *)symname)
658 kvfree(disk_link.name);
662 static int f2fs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
664 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
668 if (unlikely(f2fs_cp_error(sbi)))
671 err = dquot_initialize(dir);
675 inode = f2fs_new_inode(dir, S_IFDIR | mode);
677 return PTR_ERR(inode);
679 inode->i_op = &f2fs_dir_inode_operations;
680 inode->i_fop = &f2fs_dir_operations;
681 inode->i_mapping->a_ops = &f2fs_dblock_aops;
682 inode_nohighmem(inode);
684 set_inode_flag(inode, FI_INC_LINK);
686 err = f2fs_add_link(dentry, inode);
691 f2fs_alloc_nid_done(sbi, inode->i_ino);
693 d_instantiate_new(dentry, inode);
696 f2fs_sync_fs(sbi->sb, 1);
698 f2fs_balance_fs(sbi, true);
702 clear_inode_flag(inode, FI_INC_LINK);
703 f2fs_handle_failed_inode(inode);
707 static int f2fs_rmdir(struct inode *dir, struct dentry *dentry)
709 struct inode *inode = d_inode(dentry);
710 if (f2fs_empty_dir(inode))
711 return f2fs_unlink(dir, dentry);
715 static int f2fs_mknod(struct inode *dir, struct dentry *dentry,
716 umode_t mode, dev_t rdev)
718 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
722 if (unlikely(f2fs_cp_error(sbi)))
724 if (!f2fs_is_checkpoint_ready(sbi))
727 err = dquot_initialize(dir);
731 inode = f2fs_new_inode(dir, mode);
733 return PTR_ERR(inode);
735 init_special_inode(inode, inode->i_mode, rdev);
736 inode->i_op = &f2fs_special_inode_operations;
739 err = f2fs_add_link(dentry, inode);
744 f2fs_alloc_nid_done(sbi, inode->i_ino);
746 d_instantiate_new(dentry, inode);
749 f2fs_sync_fs(sbi->sb, 1);
751 f2fs_balance_fs(sbi, true);
754 f2fs_handle_failed_inode(inode);
758 static int __f2fs_tmpfile(struct inode *dir, struct dentry *dentry,
759 umode_t mode, struct inode **whiteout)
761 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
765 err = dquot_initialize(dir);
769 inode = f2fs_new_inode(dir, mode);
771 return PTR_ERR(inode);
774 init_special_inode(inode, inode->i_mode, WHITEOUT_DEV);
775 inode->i_op = &f2fs_special_inode_operations;
777 inode->i_op = &f2fs_file_inode_operations;
778 inode->i_fop = &f2fs_file_operations;
779 inode->i_mapping->a_ops = &f2fs_dblock_aops;
783 err = f2fs_acquire_orphan_inode(sbi);
787 err = f2fs_do_tmpfile(inode, dir);
792 * add this non-linked tmpfile to orphan list, in this way we could
793 * remove all unused data of tmpfile after abnormal power-off.
795 f2fs_add_orphan_inode(inode);
796 f2fs_alloc_nid_done(sbi, inode->i_ino);
799 f2fs_i_links_write(inode, false);
802 d_tmpfile(dentry, inode);
804 /* link_count was changed by d_tmpfile as well. */
806 unlock_new_inode(inode);
808 f2fs_balance_fs(sbi, true);
812 f2fs_release_orphan_inode(sbi);
814 f2fs_handle_failed_inode(inode);
818 static int f2fs_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode)
820 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
822 if (unlikely(f2fs_cp_error(sbi)))
824 if (!f2fs_is_checkpoint_ready(sbi))
827 if (IS_ENCRYPTED(dir) || DUMMY_ENCRYPTION_ENABLED(sbi)) {
828 int err = fscrypt_get_encryption_info(dir);
833 return __f2fs_tmpfile(dir, dentry, mode, NULL);
836 static int f2fs_create_whiteout(struct inode *dir, struct inode **whiteout)
838 if (unlikely(f2fs_cp_error(F2FS_I_SB(dir))))
841 return __f2fs_tmpfile(dir, NULL, S_IFCHR | WHITEOUT_MODE, whiteout);
844 static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry,
845 struct inode *new_dir, struct dentry *new_dentry,
848 struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir);
849 struct inode *old_inode = d_inode(old_dentry);
850 struct inode *new_inode = d_inode(new_dentry);
851 struct inode *whiteout = NULL;
852 struct page *old_dir_page;
853 struct page *old_page, *new_page = NULL;
854 struct f2fs_dir_entry *old_dir_entry = NULL;
855 struct f2fs_dir_entry *old_entry;
856 struct f2fs_dir_entry *new_entry;
857 bool is_old_inline = f2fs_has_inline_dentry(old_dir);
860 if (unlikely(f2fs_cp_error(sbi)))
862 if (!f2fs_is_checkpoint_ready(sbi))
865 if (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
866 (!projid_eq(F2FS_I(new_dir)->i_projid,
867 F2FS_I(old_dentry->d_inode)->i_projid)))
870 err = dquot_initialize(old_dir);
874 err = dquot_initialize(new_dir);
879 err = dquot_initialize(new_inode);
885 old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page);
887 if (IS_ERR(old_page))
888 err = PTR_ERR(old_page);
892 if (S_ISDIR(old_inode->i_mode)) {
893 old_dir_entry = f2fs_parent_dir(old_inode, &old_dir_page);
894 if (!old_dir_entry) {
895 if (IS_ERR(old_dir_page))
896 err = PTR_ERR(old_dir_page);
901 if (flags & RENAME_WHITEOUT) {
902 err = f2fs_create_whiteout(old_dir, &whiteout);
910 if (old_dir_entry && !f2fs_empty_dir(new_inode))
914 new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name,
917 if (IS_ERR(new_page))
918 err = PTR_ERR(new_page);
922 f2fs_balance_fs(sbi, true);
926 err = f2fs_acquire_orphan_inode(sbi);
930 f2fs_set_link(new_dir, new_entry, new_page, old_inode);
932 new_inode->i_ctime = current_time(new_inode);
933 down_write(&F2FS_I(new_inode)->i_sem);
935 f2fs_i_links_write(new_inode, false);
936 f2fs_i_links_write(new_inode, false);
937 up_write(&F2FS_I(new_inode)->i_sem);
939 if (!new_inode->i_nlink)
940 f2fs_add_orphan_inode(new_inode);
942 f2fs_release_orphan_inode(sbi);
944 f2fs_balance_fs(sbi, true);
948 err = f2fs_add_link(new_dentry, old_inode);
955 f2fs_i_links_write(new_dir, true);
958 * old entry and new entry can locate in the same inline
959 * dentry in inode, when attaching new entry in inline dentry,
960 * it could force inline dentry conversion, after that,
961 * old_entry and old_page will point to wrong address, in
962 * order to avoid this, let's do the check and update here.
964 if (is_old_inline && !f2fs_has_inline_dentry(old_dir)) {
965 f2fs_put_page(old_page, 0);
968 old_entry = f2fs_find_entry(old_dir,
969 &old_dentry->d_name, &old_page);
972 if (IS_ERR(old_page))
973 err = PTR_ERR(old_page);
980 down_write(&F2FS_I(old_inode)->i_sem);
981 if (!old_dir_entry || whiteout)
982 file_lost_pino(old_inode);
984 /* adjust dir's i_pino to pass fsck check */
985 f2fs_i_pino_write(old_inode, new_dir->i_ino);
986 up_write(&F2FS_I(old_inode)->i_sem);
988 old_inode->i_ctime = current_time(old_inode);
989 f2fs_mark_inode_dirty_sync(old_inode, false);
991 f2fs_delete_entry(old_entry, old_page, old_dir, NULL);
994 whiteout->i_state |= I_LINKABLE;
995 set_inode_flag(whiteout, FI_INC_LINK);
996 err = f2fs_add_link(old_dentry, whiteout);
999 whiteout->i_state &= ~I_LINKABLE;
1003 if (old_dir_entry) {
1004 if (old_dir != new_dir && !whiteout)
1005 f2fs_set_link(old_inode, old_dir_entry,
1006 old_dir_page, new_dir);
1008 f2fs_put_page(old_dir_page, 0);
1009 f2fs_i_links_write(old_dir, false);
1011 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) {
1012 f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO);
1013 if (S_ISDIR(old_inode->i_mode))
1014 f2fs_add_ino_entry(sbi, old_inode->i_ino,
1018 f2fs_unlock_op(sbi);
1020 if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir))
1021 f2fs_sync_fs(sbi->sb, 1);
1023 f2fs_update_time(sbi, REQ_TIME);
1027 f2fs_unlock_op(sbi);
1029 f2fs_put_page(new_page, 0);
1035 f2fs_put_page(old_dir_page, 0);
1037 f2fs_put_page(old_page, 0);
1042 static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry,
1043 struct inode *new_dir, struct dentry *new_dentry)
1045 struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir);
1046 struct inode *old_inode = d_inode(old_dentry);
1047 struct inode *new_inode = d_inode(new_dentry);
1048 struct page *old_dir_page, *new_dir_page;
1049 struct page *old_page, *new_page;
1050 struct f2fs_dir_entry *old_dir_entry = NULL, *new_dir_entry = NULL;
1051 struct f2fs_dir_entry *old_entry, *new_entry;
1052 int old_nlink = 0, new_nlink = 0;
1055 if (unlikely(f2fs_cp_error(sbi)))
1057 if (!f2fs_is_checkpoint_ready(sbi))
1060 if ((is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
1061 !projid_eq(F2FS_I(new_dir)->i_projid,
1062 F2FS_I(old_dentry->d_inode)->i_projid)) ||
1063 (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
1064 !projid_eq(F2FS_I(old_dir)->i_projid,
1065 F2FS_I(new_dentry->d_inode)->i_projid)))
1068 err = dquot_initialize(old_dir);
1072 err = dquot_initialize(new_dir);
1077 old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page);
1079 if (IS_ERR(old_page))
1080 err = PTR_ERR(old_page);
1084 new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name, &new_page);
1086 if (IS_ERR(new_page))
1087 err = PTR_ERR(new_page);
1091 /* prepare for updating ".." directory entry info later */
1092 if (old_dir != new_dir) {
1093 if (S_ISDIR(old_inode->i_mode)) {
1094 old_dir_entry = f2fs_parent_dir(old_inode,
1096 if (!old_dir_entry) {
1097 if (IS_ERR(old_dir_page))
1098 err = PTR_ERR(old_dir_page);
1103 if (S_ISDIR(new_inode->i_mode)) {
1104 new_dir_entry = f2fs_parent_dir(new_inode,
1106 if (!new_dir_entry) {
1107 if (IS_ERR(new_dir_page))
1108 err = PTR_ERR(new_dir_page);
1115 * If cross rename between file and directory those are not
1116 * in the same directory, we will inc nlink of file's parent
1117 * later, so we should check upper boundary of its nlink.
1119 if ((!old_dir_entry || !new_dir_entry) &&
1120 old_dir_entry != new_dir_entry) {
1121 old_nlink = old_dir_entry ? -1 : 1;
1122 new_nlink = -old_nlink;
1124 if ((old_nlink > 0 && old_dir->i_nlink >= F2FS_LINK_MAX) ||
1125 (new_nlink > 0 && new_dir->i_nlink >= F2FS_LINK_MAX))
1129 f2fs_balance_fs(sbi, true);
1133 /* update ".." directory entry info of old dentry */
1135 f2fs_set_link(old_inode, old_dir_entry, old_dir_page, new_dir);
1137 /* update ".." directory entry info of new dentry */
1139 f2fs_set_link(new_inode, new_dir_entry, new_dir_page, old_dir);
1141 /* update directory entry info of old dir inode */
1142 f2fs_set_link(old_dir, old_entry, old_page, new_inode);
1144 down_write(&F2FS_I(old_inode)->i_sem);
1146 file_lost_pino(old_inode);
1148 /* adjust dir's i_pino to pass fsck check */
1149 f2fs_i_pino_write(old_inode, new_dir->i_ino);
1150 up_write(&F2FS_I(old_inode)->i_sem);
1152 old_dir->i_ctime = current_time(old_dir);
1154 down_write(&F2FS_I(old_dir)->i_sem);
1155 f2fs_i_links_write(old_dir, old_nlink > 0);
1156 up_write(&F2FS_I(old_dir)->i_sem);
1158 f2fs_mark_inode_dirty_sync(old_dir, false);
1160 /* update directory entry info of new dir inode */
1161 f2fs_set_link(new_dir, new_entry, new_page, old_inode);
1163 down_write(&F2FS_I(new_inode)->i_sem);
1165 file_lost_pino(new_inode);
1167 /* adjust dir's i_pino to pass fsck check */
1168 f2fs_i_pino_write(new_inode, old_dir->i_ino);
1169 up_write(&F2FS_I(new_inode)->i_sem);
1171 new_dir->i_ctime = current_time(new_dir);
1173 down_write(&F2FS_I(new_dir)->i_sem);
1174 f2fs_i_links_write(new_dir, new_nlink > 0);
1175 up_write(&F2FS_I(new_dir)->i_sem);
1177 f2fs_mark_inode_dirty_sync(new_dir, false);
1179 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) {
1180 f2fs_add_ino_entry(sbi, old_dir->i_ino, TRANS_DIR_INO);
1181 f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO);
1184 f2fs_unlock_op(sbi);
1186 if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir))
1187 f2fs_sync_fs(sbi->sb, 1);
1189 f2fs_update_time(sbi, REQ_TIME);
1192 if (new_dir_entry) {
1193 f2fs_put_page(new_dir_page, 0);
1196 if (old_dir_entry) {
1197 f2fs_put_page(old_dir_page, 0);
1200 f2fs_put_page(new_page, 0);
1202 f2fs_put_page(old_page, 0);
1207 static int f2fs_rename2(struct inode *old_dir, struct dentry *old_dentry,
1208 struct inode *new_dir, struct dentry *new_dentry,
1213 if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE | RENAME_WHITEOUT))
1216 err = fscrypt_prepare_rename(old_dir, old_dentry, new_dir, new_dentry,
1221 if (flags & RENAME_EXCHANGE) {
1222 return f2fs_cross_rename(old_dir, old_dentry,
1223 new_dir, new_dentry);
1226 * VFS has already handled the new dentry existence case,
1227 * here, we just deal with "RENAME_NOREPLACE" as regular rename.
1229 return f2fs_rename(old_dir, old_dentry, new_dir, new_dentry, flags);
1232 static const char *f2fs_encrypted_get_link(struct dentry *dentry,
1233 struct inode *inode,
1234 struct delayed_call *done)
1240 return ERR_PTR(-ECHILD);
1242 page = read_mapping_page(inode->i_mapping, 0, NULL);
1244 return ERR_CAST(page);
1246 target = fscrypt_get_symlink(inode, page_address(page),
1247 inode->i_sb->s_blocksize, done);
1252 const struct inode_operations f2fs_encrypted_symlink_inode_operations = {
1253 .get_link = f2fs_encrypted_get_link,
1254 .getattr = f2fs_getattr,
1255 .setattr = f2fs_setattr,
1256 #ifdef CONFIG_F2FS_FS_XATTR
1257 .listxattr = f2fs_listxattr,
1261 const struct inode_operations f2fs_dir_inode_operations = {
1262 .create = f2fs_create,
1263 .lookup = f2fs_lookup,
1265 .unlink = f2fs_unlink,
1266 .symlink = f2fs_symlink,
1267 .mkdir = f2fs_mkdir,
1268 .rmdir = f2fs_rmdir,
1269 .mknod = f2fs_mknod,
1270 .rename = f2fs_rename2,
1271 .tmpfile = f2fs_tmpfile,
1272 .getattr = f2fs_getattr,
1273 .setattr = f2fs_setattr,
1274 .get_acl = f2fs_get_acl,
1275 .set_acl = f2fs_set_acl,
1276 #ifdef CONFIG_F2FS_FS_XATTR
1277 .listxattr = f2fs_listxattr,
1279 .fiemap = f2fs_fiemap,
1282 const struct inode_operations f2fs_symlink_inode_operations = {
1283 .get_link = f2fs_get_link,
1284 .getattr = f2fs_getattr,
1285 .setattr = f2fs_setattr,
1286 #ifdef CONFIG_F2FS_FS_XATTR
1287 .listxattr = f2fs_listxattr,
1291 const struct inode_operations f2fs_special_inode_operations = {
1292 .getattr = f2fs_getattr,
1293 .setattr = f2fs_setattr,
1294 .get_acl = f2fs_get_acl,
1295 .set_acl = f2fs_set_acl,
1296 #ifdef CONFIG_F2FS_FS_XATTR
1297 .listxattr = f2fs_listxattr,