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 (f2fs_may_encrypt(dir, inode))
79 f2fs_set_encrypted_inode(inode);
81 if (f2fs_sb_has_extra_attr(sbi)) {
82 set_inode_flag(inode, FI_EXTRA_ATTR);
83 F2FS_I(inode)->i_extra_isize = F2FS_TOTAL_EXTRA_ATTR_SIZE;
86 if (test_opt(sbi, INLINE_XATTR))
87 set_inode_flag(inode, FI_INLINE_XATTR);
89 if (test_opt(sbi, INLINE_DATA) && f2fs_may_inline_data(inode))
90 set_inode_flag(inode, FI_INLINE_DATA);
91 if (f2fs_may_inline_dentry(inode))
92 set_inode_flag(inode, FI_INLINE_DENTRY);
94 if (f2fs_sb_has_flexible_inline_xattr(sbi)) {
95 f2fs_bug_on(sbi, !f2fs_has_extra_attr(inode));
96 if (f2fs_has_inline_xattr(inode))
97 xattr_size = F2FS_OPTION(sbi).inline_xattr_size;
98 /* Otherwise, will be 0 */
99 } else if (f2fs_has_inline_xattr(inode) ||
100 f2fs_has_inline_dentry(inode)) {
101 xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
103 F2FS_I(inode)->i_inline_xattr_size = xattr_size;
105 f2fs_init_extent_tree(inode, NULL);
107 stat_inc_inline_xattr(inode);
108 stat_inc_inline_inode(inode);
109 stat_inc_inline_dir(inode);
111 F2FS_I(inode)->i_flags =
112 f2fs_mask_flags(mode, F2FS_I(dir)->i_flags & F2FS_FL_INHERITED);
114 if (S_ISDIR(inode->i_mode))
115 F2FS_I(inode)->i_flags |= F2FS_INDEX_FL;
117 if (F2FS_I(inode)->i_flags & F2FS_PROJINHERIT_FL)
118 set_inode_flag(inode, FI_PROJ_INHERIT);
120 if (f2fs_sb_has_compression(sbi)) {
121 /* Inherit the compression flag in directory */
122 if ((F2FS_I(dir)->i_flags & F2FS_COMPR_FL) &&
123 f2fs_may_compress(inode))
124 set_compress_context(inode);
127 f2fs_set_inode_flags(inode);
129 trace_f2fs_new_inode(inode, 0);
133 trace_f2fs_new_inode(inode, err);
134 make_bad_inode(inode);
136 set_inode_flag(inode, FI_FREE_NID);
140 trace_f2fs_new_inode(inode, err);
142 inode->i_flags |= S_NOQUOTA;
144 set_inode_flag(inode, FI_FREE_NID);
146 unlock_new_inode(inode);
151 static inline int is_extension_exist(const unsigned char *s, const char *sub)
153 size_t slen = strlen(s);
154 size_t sublen = strlen(sub);
157 if (sublen == 1 && *sub == '*')
161 * filename format of multimedia file should be defined as:
162 * "filename + '.' + extension + (optional: '.' + temp extension)".
164 if (slen < sublen + 2)
167 for (i = 1; i < slen - sublen; i++) {
170 if (!strncasecmp(s + i + 1, sub, sublen))
178 * Set file's temperature for hot/cold data separation
180 static inline void set_file_temperature(struct f2fs_sb_info *sbi, struct inode *inode,
181 const unsigned char *name)
183 __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
184 int i, cold_count, hot_count;
186 down_read(&sbi->sb_lock);
188 cold_count = le32_to_cpu(sbi->raw_super->extension_count);
189 hot_count = sbi->raw_super->hot_ext_count;
191 for (i = 0; i < cold_count + hot_count; i++) {
192 if (is_extension_exist(name, extlist[i]))
196 up_read(&sbi->sb_lock);
198 if (i == cold_count + hot_count)
202 file_set_cold(inode);
207 int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
210 __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
211 int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
212 int hot_count = sbi->raw_super->hot_ext_count;
213 int total_count = cold_count + hot_count;
218 if (total_count == F2FS_MAX_EXTENSION)
221 if (!hot && !cold_count)
223 if (hot && !hot_count)
235 for (i = start; i < count; i++) {
236 if (strcmp(name, extlist[i]))
242 memcpy(extlist[i], extlist[i + 1],
243 F2FS_EXTENSION_LEN * (total_count - i - 1));
244 memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN);
246 sbi->raw_super->hot_ext_count = hot_count - 1;
248 sbi->raw_super->extension_count =
249 cpu_to_le32(cold_count - 1);
257 memcpy(extlist[count], name, strlen(name));
258 sbi->raw_super->hot_ext_count = hot_count + 1;
260 char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN];
262 memcpy(buf, &extlist[cold_count],
263 F2FS_EXTENSION_LEN * hot_count);
264 memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN);
265 memcpy(extlist[cold_count], name, strlen(name));
266 memcpy(&extlist[cold_count + 1], buf,
267 F2FS_EXTENSION_LEN * hot_count);
268 sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1);
273 static void set_compress_inode(struct f2fs_sb_info *sbi, struct inode *inode,
274 const unsigned char *name)
276 __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
277 unsigned char (*ext)[F2FS_EXTENSION_LEN];
278 unsigned int ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
279 int i, cold_count, hot_count;
281 if (!f2fs_sb_has_compression(sbi) ||
282 is_inode_flag_set(inode, FI_COMPRESSED_FILE) ||
283 F2FS_I(inode)->i_flags & F2FS_NOCOMP_FL ||
284 !f2fs_may_compress(inode))
287 down_read(&sbi->sb_lock);
289 cold_count = le32_to_cpu(sbi->raw_super->extension_count);
290 hot_count = sbi->raw_super->hot_ext_count;
292 for (i = cold_count; i < cold_count + hot_count; i++) {
293 if (is_extension_exist(name, extlist[i])) {
294 up_read(&sbi->sb_lock);
299 up_read(&sbi->sb_lock);
301 ext = F2FS_OPTION(sbi).extensions;
303 for (i = 0; i < ext_cnt; i++) {
304 if (!is_extension_exist(name, ext[i]))
307 set_compress_context(inode);
312 static int f2fs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
315 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
320 if (unlikely(f2fs_cp_error(sbi)))
322 if (!f2fs_is_checkpoint_ready(sbi))
325 err = dquot_initialize(dir);
329 inode = f2fs_new_inode(dir, mode);
331 return PTR_ERR(inode);
333 if (!test_opt(sbi, DISABLE_EXT_IDENTIFY))
334 set_file_temperature(sbi, inode, dentry->d_name.name);
336 set_compress_inode(sbi, inode, dentry->d_name.name);
338 inode->i_op = &f2fs_file_inode_operations;
339 inode->i_fop = &f2fs_file_operations;
340 inode->i_mapping->a_ops = &f2fs_dblock_aops;
344 err = f2fs_add_link(dentry, inode);
349 f2fs_alloc_nid_done(sbi, ino);
351 d_instantiate_new(dentry, inode);
354 f2fs_sync_fs(sbi->sb, 1);
356 f2fs_balance_fs(sbi, true);
359 f2fs_handle_failed_inode(inode);
363 static int f2fs_link(struct dentry *old_dentry, struct inode *dir,
364 struct dentry *dentry)
366 struct inode *inode = d_inode(old_dentry);
367 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
370 if (unlikely(f2fs_cp_error(sbi)))
372 if (!f2fs_is_checkpoint_ready(sbi))
375 err = fscrypt_prepare_link(old_dentry, dir, dentry);
379 if (is_inode_flag_set(dir, FI_PROJ_INHERIT) &&
380 (!projid_eq(F2FS_I(dir)->i_projid,
381 F2FS_I(old_dentry->d_inode)->i_projid)))
384 err = dquot_initialize(dir);
388 f2fs_balance_fs(sbi, true);
390 inode->i_ctime = current_time(inode);
393 set_inode_flag(inode, FI_INC_LINK);
395 err = f2fs_add_link(dentry, inode);
400 d_instantiate(dentry, inode);
403 f2fs_sync_fs(sbi->sb, 1);
406 clear_inode_flag(inode, FI_INC_LINK);
412 struct dentry *f2fs_get_parent(struct dentry *child)
414 struct qstr dotdot = QSTR_INIT("..", 2);
416 unsigned long ino = f2fs_inode_by_name(d_inode(child), &dotdot, &page);
419 return ERR_CAST(page);
420 return ERR_PTR(-ENOENT);
422 return d_obtain_alias(f2fs_iget(child->d_sb, ino));
425 static int __recover_dot_dentries(struct inode *dir, nid_t pino)
427 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
428 struct qstr dot = QSTR_INIT(".", 1);
429 struct qstr dotdot = QSTR_INIT("..", 2);
430 struct f2fs_dir_entry *de;
434 if (f2fs_readonly(sbi->sb)) {
435 f2fs_info(sbi, "skip recovering inline_dots inode (ino:%lu, pino:%u) in readonly mountpoint",
440 err = dquot_initialize(dir);
444 f2fs_balance_fs(sbi, true);
448 de = f2fs_find_entry(dir, &dot, &page);
450 f2fs_put_page(page, 0);
451 } else if (IS_ERR(page)) {
455 err = f2fs_do_add_link(dir, &dot, NULL, dir->i_ino, S_IFDIR);
460 de = f2fs_find_entry(dir, &dotdot, &page);
462 f2fs_put_page(page, 0);
463 else if (IS_ERR(page))
466 err = f2fs_do_add_link(dir, &dotdot, NULL, pino, S_IFDIR);
469 clear_inode_flag(dir, FI_INLINE_DOTS);
475 static struct dentry *f2fs_lookup(struct inode *dir, struct dentry *dentry,
478 struct inode *inode = NULL;
479 struct f2fs_dir_entry *de;
484 unsigned int root_ino = F2FS_ROOT_INO(F2FS_I_SB(dir));
485 struct f2fs_filename fname;
487 trace_f2fs_lookup_start(dir, dentry, flags);
489 if (dentry->d_name.len > F2FS_NAME_LEN) {
494 err = f2fs_prepare_lookup(dir, dentry, &fname);
499 de = __f2fs_find_entry(dir, &fname, &page);
500 f2fs_free_filename(&fname);
511 ino = le32_to_cpu(de->ino);
512 f2fs_put_page(page, 0);
514 inode = f2fs_iget(dir->i_sb, ino);
516 err = PTR_ERR(inode);
520 if ((dir->i_ino == root_ino) && f2fs_has_inline_dots(dir)) {
521 err = __recover_dot_dentries(dir, root_ino);
526 if (f2fs_has_inline_dots(inode)) {
527 err = __recover_dot_dentries(inode, dir->i_ino);
531 if (IS_ENCRYPTED(dir) &&
532 (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode)) &&
533 !fscrypt_has_permitted_context(dir, inode)) {
534 f2fs_warn(F2FS_I_SB(inode), "Inconsistent encryption contexts: %lu/%lu",
535 dir->i_ino, inode->i_ino);
540 #ifdef CONFIG_UNICODE
541 if (!inode && IS_CASEFOLDED(dir)) {
542 /* Eventually we want to call d_add_ci(dentry, NULL)
543 * for negative dentries in the encoding case as
544 * well. For now, prevent the negative dentry
547 trace_f2fs_lookup_end(dir, dentry, ino, err);
551 new = d_splice_alias(inode, dentry);
552 err = PTR_ERR_OR_ZERO(new);
553 trace_f2fs_lookup_end(dir, dentry, ino, !new ? -ENOENT : err);
558 trace_f2fs_lookup_end(dir, dentry, ino, err);
562 static int f2fs_unlink(struct inode *dir, struct dentry *dentry)
564 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
565 struct inode *inode = d_inode(dentry);
566 struct f2fs_dir_entry *de;
570 trace_f2fs_unlink_enter(dir, dentry);
572 if (unlikely(f2fs_cp_error(sbi)))
575 err = dquot_initialize(dir);
578 err = dquot_initialize(inode);
582 de = f2fs_find_entry(dir, &dentry->d_name, &page);
589 f2fs_balance_fs(sbi, true);
592 err = f2fs_acquire_orphan_inode(sbi);
595 f2fs_put_page(page, 0);
598 f2fs_delete_entry(de, page, dir, inode);
599 #ifdef CONFIG_UNICODE
600 /* VFS negative dentries are incompatible with Encoding and
601 * Case-insensitiveness. Eventually we'll want avoid
602 * invalidating the dentries here, alongside with returning the
603 * negative dentries at f2fs_lookup(), when it is better
604 * supported by the VFS for the CI case.
606 if (IS_CASEFOLDED(dir))
607 d_invalidate(dentry);
612 f2fs_sync_fs(sbi->sb, 1);
614 trace_f2fs_unlink_exit(inode, err);
618 static const char *f2fs_get_link(struct dentry *dentry,
620 struct delayed_call *done)
622 const char *link = page_get_link(dentry, inode, done);
623 if (!IS_ERR(link) && !*link) {
624 /* this is broken symlink case */
625 do_delayed_call(done);
626 clear_delayed_call(done);
627 link = ERR_PTR(-ENOENT);
632 static int f2fs_symlink(struct inode *dir, struct dentry *dentry,
635 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
637 size_t len = strlen(symname);
638 struct fscrypt_str disk_link;
641 if (unlikely(f2fs_cp_error(sbi)))
643 if (!f2fs_is_checkpoint_ready(sbi))
646 err = fscrypt_prepare_symlink(dir, symname, len, dir->i_sb->s_blocksize,
651 err = dquot_initialize(dir);
655 inode = f2fs_new_inode(dir, S_IFLNK | S_IRWXUGO);
657 return PTR_ERR(inode);
659 if (IS_ENCRYPTED(inode))
660 inode->i_op = &f2fs_encrypted_symlink_inode_operations;
662 inode->i_op = &f2fs_symlink_inode_operations;
663 inode_nohighmem(inode);
664 inode->i_mapping->a_ops = &f2fs_dblock_aops;
667 err = f2fs_add_link(dentry, inode);
669 goto out_f2fs_handle_failed_inode;
671 f2fs_alloc_nid_done(sbi, inode->i_ino);
673 err = fscrypt_encrypt_symlink(inode, symname, len, &disk_link);
677 err = page_symlink(inode, disk_link.name, disk_link.len);
680 d_instantiate_new(dentry, inode);
683 * Let's flush symlink data in order to avoid broken symlink as much as
684 * possible. Nevertheless, fsyncing is the best way, but there is no
685 * way to get a file descriptor in order to flush that.
687 * Note that, it needs to do dir->fsync to make this recoverable.
688 * If the symlink path is stored into inline_data, there is no
689 * performance regression.
692 filemap_write_and_wait_range(inode->i_mapping, 0,
696 f2fs_sync_fs(sbi->sb, 1);
698 f2fs_unlink(dir, dentry);
701 f2fs_balance_fs(sbi, true);
702 goto out_free_encrypted_link;
704 out_f2fs_handle_failed_inode:
705 f2fs_handle_failed_inode(inode);
706 out_free_encrypted_link:
707 if (disk_link.name != (unsigned char *)symname)
708 kvfree(disk_link.name);
712 static int f2fs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
714 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
718 if (unlikely(f2fs_cp_error(sbi)))
721 err = dquot_initialize(dir);
725 inode = f2fs_new_inode(dir, S_IFDIR | mode);
727 return PTR_ERR(inode);
729 inode->i_op = &f2fs_dir_inode_operations;
730 inode->i_fop = &f2fs_dir_operations;
731 inode->i_mapping->a_ops = &f2fs_dblock_aops;
732 inode_nohighmem(inode);
734 set_inode_flag(inode, FI_INC_LINK);
736 err = f2fs_add_link(dentry, inode);
741 f2fs_alloc_nid_done(sbi, inode->i_ino);
743 d_instantiate_new(dentry, inode);
746 f2fs_sync_fs(sbi->sb, 1);
748 f2fs_balance_fs(sbi, true);
752 clear_inode_flag(inode, FI_INC_LINK);
753 f2fs_handle_failed_inode(inode);
757 static int f2fs_rmdir(struct inode *dir, struct dentry *dentry)
759 struct inode *inode = d_inode(dentry);
760 if (f2fs_empty_dir(inode))
761 return f2fs_unlink(dir, dentry);
765 static int f2fs_mknod(struct inode *dir, struct dentry *dentry,
766 umode_t mode, dev_t rdev)
768 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
772 if (unlikely(f2fs_cp_error(sbi)))
774 if (!f2fs_is_checkpoint_ready(sbi))
777 err = dquot_initialize(dir);
781 inode = f2fs_new_inode(dir, mode);
783 return PTR_ERR(inode);
785 init_special_inode(inode, inode->i_mode, rdev);
786 inode->i_op = &f2fs_special_inode_operations;
789 err = f2fs_add_link(dentry, inode);
794 f2fs_alloc_nid_done(sbi, inode->i_ino);
796 d_instantiate_new(dentry, inode);
799 f2fs_sync_fs(sbi->sb, 1);
801 f2fs_balance_fs(sbi, true);
804 f2fs_handle_failed_inode(inode);
808 static int __f2fs_tmpfile(struct inode *dir, struct dentry *dentry,
809 umode_t mode, struct inode **whiteout)
811 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
815 err = dquot_initialize(dir);
819 inode = f2fs_new_inode(dir, mode);
821 return PTR_ERR(inode);
824 init_special_inode(inode, inode->i_mode, WHITEOUT_DEV);
825 inode->i_op = &f2fs_special_inode_operations;
827 inode->i_op = &f2fs_file_inode_operations;
828 inode->i_fop = &f2fs_file_operations;
829 inode->i_mapping->a_ops = &f2fs_dblock_aops;
833 err = f2fs_acquire_orphan_inode(sbi);
837 err = f2fs_do_tmpfile(inode, dir);
842 * add this non-linked tmpfile to orphan list, in this way we could
843 * remove all unused data of tmpfile after abnormal power-off.
845 f2fs_add_orphan_inode(inode);
846 f2fs_alloc_nid_done(sbi, inode->i_ino);
849 f2fs_i_links_write(inode, false);
850 inode->i_state |= I_LINKABLE;
853 d_tmpfile(dentry, inode);
855 /* link_count was changed by d_tmpfile as well. */
857 unlock_new_inode(inode);
859 f2fs_balance_fs(sbi, true);
863 f2fs_release_orphan_inode(sbi);
865 f2fs_handle_failed_inode(inode);
869 static int f2fs_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode)
871 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
873 if (unlikely(f2fs_cp_error(sbi)))
875 if (!f2fs_is_checkpoint_ready(sbi))
878 return __f2fs_tmpfile(dir, dentry, mode, NULL);
881 static int f2fs_create_whiteout(struct inode *dir, struct inode **whiteout)
883 if (unlikely(f2fs_cp_error(F2FS_I_SB(dir))))
886 return __f2fs_tmpfile(dir, NULL, S_IFCHR | WHITEOUT_MODE, whiteout);
889 static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry,
890 struct inode *new_dir, struct dentry *new_dentry,
893 struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir);
894 struct inode *old_inode = d_inode(old_dentry);
895 struct inode *new_inode = d_inode(new_dentry);
896 struct inode *whiteout = NULL;
897 struct page *old_dir_page = NULL;
898 struct page *old_page, *new_page = NULL;
899 struct f2fs_dir_entry *old_dir_entry = NULL;
900 struct f2fs_dir_entry *old_entry;
901 struct f2fs_dir_entry *new_entry;
904 if (unlikely(f2fs_cp_error(sbi)))
906 if (!f2fs_is_checkpoint_ready(sbi))
909 if (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
910 (!projid_eq(F2FS_I(new_dir)->i_projid,
911 F2FS_I(old_dentry->d_inode)->i_projid)))
915 * If new_inode is null, the below renaming flow will
916 * add a link in old_dir which can conver inline_dir.
917 * After then, if we failed to get the entry due to other
918 * reasons like ENOMEM, we had to remove the new entry.
919 * Instead of adding such the error handling routine, let's
920 * simply convert first here.
922 if (old_dir == new_dir && !new_inode) {
923 err = f2fs_try_convert_inline_dir(old_dir, new_dentry);
928 if (flags & RENAME_WHITEOUT) {
929 err = f2fs_create_whiteout(old_dir, &whiteout);
934 err = dquot_initialize(old_dir);
938 err = dquot_initialize(new_dir);
943 err = dquot_initialize(new_inode);
949 old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page);
951 if (IS_ERR(old_page))
952 err = PTR_ERR(old_page);
956 if (S_ISDIR(old_inode->i_mode)) {
957 old_dir_entry = f2fs_parent_dir(old_inode, &old_dir_page);
958 if (!old_dir_entry) {
959 if (IS_ERR(old_dir_page))
960 err = PTR_ERR(old_dir_page);
968 if (old_dir_entry && !f2fs_empty_dir(new_inode))
972 new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name,
975 if (IS_ERR(new_page))
976 err = PTR_ERR(new_page);
980 f2fs_balance_fs(sbi, true);
984 err = f2fs_acquire_orphan_inode(sbi);
988 f2fs_set_link(new_dir, new_entry, new_page, old_inode);
991 new_inode->i_ctime = current_time(new_inode);
992 down_write(&F2FS_I(new_inode)->i_sem);
994 f2fs_i_links_write(new_inode, false);
995 f2fs_i_links_write(new_inode, false);
996 up_write(&F2FS_I(new_inode)->i_sem);
998 if (!new_inode->i_nlink)
999 f2fs_add_orphan_inode(new_inode);
1001 f2fs_release_orphan_inode(sbi);
1003 f2fs_balance_fs(sbi, true);
1007 err = f2fs_add_link(new_dentry, old_inode);
1009 f2fs_unlock_op(sbi);
1014 f2fs_i_links_write(new_dir, true);
1017 down_write(&F2FS_I(old_inode)->i_sem);
1018 if (!old_dir_entry || whiteout)
1019 file_lost_pino(old_inode);
1021 /* adjust dir's i_pino to pass fsck check */
1022 f2fs_i_pino_write(old_inode, new_dir->i_ino);
1023 up_write(&F2FS_I(old_inode)->i_sem);
1025 old_inode->i_ctime = current_time(old_inode);
1026 f2fs_mark_inode_dirty_sync(old_inode, false);
1028 f2fs_delete_entry(old_entry, old_page, old_dir, NULL);
1032 set_inode_flag(whiteout, FI_INC_LINK);
1033 err = f2fs_add_link(old_dentry, whiteout);
1036 whiteout->i_state &= ~I_LINKABLE;
1040 if (old_dir_entry) {
1041 if (old_dir != new_dir && !whiteout)
1042 f2fs_set_link(old_inode, old_dir_entry,
1043 old_dir_page, new_dir);
1045 f2fs_put_page(old_dir_page, 0);
1046 f2fs_i_links_write(old_dir, false);
1048 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) {
1049 f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO);
1050 if (S_ISDIR(old_inode->i_mode))
1051 f2fs_add_ino_entry(sbi, old_inode->i_ino,
1055 f2fs_unlock_op(sbi);
1057 if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir))
1058 f2fs_sync_fs(sbi->sb, 1);
1060 f2fs_update_time(sbi, REQ_TIME);
1064 f2fs_unlock_op(sbi);
1065 f2fs_put_page(new_page, 0);
1068 f2fs_put_page(old_dir_page, 0);
1070 f2fs_put_page(old_page, 0);
1077 static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry,
1078 struct inode *new_dir, struct dentry *new_dentry)
1080 struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir);
1081 struct inode *old_inode = d_inode(old_dentry);
1082 struct inode *new_inode = d_inode(new_dentry);
1083 struct page *old_dir_page, *new_dir_page;
1084 struct page *old_page, *new_page;
1085 struct f2fs_dir_entry *old_dir_entry = NULL, *new_dir_entry = NULL;
1086 struct f2fs_dir_entry *old_entry, *new_entry;
1087 int old_nlink = 0, new_nlink = 0;
1090 if (unlikely(f2fs_cp_error(sbi)))
1092 if (!f2fs_is_checkpoint_ready(sbi))
1095 if ((is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
1096 !projid_eq(F2FS_I(new_dir)->i_projid,
1097 F2FS_I(old_dentry->d_inode)->i_projid)) ||
1098 (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
1099 !projid_eq(F2FS_I(old_dir)->i_projid,
1100 F2FS_I(new_dentry->d_inode)->i_projid)))
1103 err = dquot_initialize(old_dir);
1107 err = dquot_initialize(new_dir);
1112 old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page);
1114 if (IS_ERR(old_page))
1115 err = PTR_ERR(old_page);
1119 new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name, &new_page);
1121 if (IS_ERR(new_page))
1122 err = PTR_ERR(new_page);
1126 /* prepare for updating ".." directory entry info later */
1127 if (old_dir != new_dir) {
1128 if (S_ISDIR(old_inode->i_mode)) {
1129 old_dir_entry = f2fs_parent_dir(old_inode,
1131 if (!old_dir_entry) {
1132 if (IS_ERR(old_dir_page))
1133 err = PTR_ERR(old_dir_page);
1138 if (S_ISDIR(new_inode->i_mode)) {
1139 new_dir_entry = f2fs_parent_dir(new_inode,
1141 if (!new_dir_entry) {
1142 if (IS_ERR(new_dir_page))
1143 err = PTR_ERR(new_dir_page);
1150 * If cross rename between file and directory those are not
1151 * in the same directory, we will inc nlink of file's parent
1152 * later, so we should check upper boundary of its nlink.
1154 if ((!old_dir_entry || !new_dir_entry) &&
1155 old_dir_entry != new_dir_entry) {
1156 old_nlink = old_dir_entry ? -1 : 1;
1157 new_nlink = -old_nlink;
1159 if ((old_nlink > 0 && old_dir->i_nlink >= F2FS_LINK_MAX) ||
1160 (new_nlink > 0 && new_dir->i_nlink >= F2FS_LINK_MAX))
1164 f2fs_balance_fs(sbi, true);
1168 /* update ".." directory entry info of old dentry */
1170 f2fs_set_link(old_inode, old_dir_entry, old_dir_page, new_dir);
1172 /* update ".." directory entry info of new dentry */
1174 f2fs_set_link(new_inode, new_dir_entry, new_dir_page, old_dir);
1176 /* update directory entry info of old dir inode */
1177 f2fs_set_link(old_dir, old_entry, old_page, new_inode);
1179 down_write(&F2FS_I(old_inode)->i_sem);
1181 file_lost_pino(old_inode);
1183 /* adjust dir's i_pino to pass fsck check */
1184 f2fs_i_pino_write(old_inode, new_dir->i_ino);
1185 up_write(&F2FS_I(old_inode)->i_sem);
1187 old_dir->i_ctime = current_time(old_dir);
1189 down_write(&F2FS_I(old_dir)->i_sem);
1190 f2fs_i_links_write(old_dir, old_nlink > 0);
1191 up_write(&F2FS_I(old_dir)->i_sem);
1193 f2fs_mark_inode_dirty_sync(old_dir, false);
1195 /* update directory entry info of new dir inode */
1196 f2fs_set_link(new_dir, new_entry, new_page, old_inode);
1198 down_write(&F2FS_I(new_inode)->i_sem);
1200 file_lost_pino(new_inode);
1202 /* adjust dir's i_pino to pass fsck check */
1203 f2fs_i_pino_write(new_inode, old_dir->i_ino);
1204 up_write(&F2FS_I(new_inode)->i_sem);
1206 new_dir->i_ctime = current_time(new_dir);
1208 down_write(&F2FS_I(new_dir)->i_sem);
1209 f2fs_i_links_write(new_dir, new_nlink > 0);
1210 up_write(&F2FS_I(new_dir)->i_sem);
1212 f2fs_mark_inode_dirty_sync(new_dir, false);
1214 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) {
1215 f2fs_add_ino_entry(sbi, old_dir->i_ino, TRANS_DIR_INO);
1216 f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO);
1219 f2fs_unlock_op(sbi);
1221 if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir))
1222 f2fs_sync_fs(sbi->sb, 1);
1224 f2fs_update_time(sbi, REQ_TIME);
1227 if (new_dir_entry) {
1228 f2fs_put_page(new_dir_page, 0);
1231 if (old_dir_entry) {
1232 f2fs_put_page(old_dir_page, 0);
1235 f2fs_put_page(new_page, 0);
1237 f2fs_put_page(old_page, 0);
1242 static int f2fs_rename2(struct inode *old_dir, struct dentry *old_dentry,
1243 struct inode *new_dir, struct dentry *new_dentry,
1248 if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE | RENAME_WHITEOUT))
1251 err = fscrypt_prepare_rename(old_dir, old_dentry, new_dir, new_dentry,
1256 if (flags & RENAME_EXCHANGE) {
1257 return f2fs_cross_rename(old_dir, old_dentry,
1258 new_dir, new_dentry);
1261 * VFS has already handled the new dentry existence case,
1262 * here, we just deal with "RENAME_NOREPLACE" as regular rename.
1264 return f2fs_rename(old_dir, old_dentry, new_dir, new_dentry, flags);
1267 static const char *f2fs_encrypted_get_link(struct dentry *dentry,
1268 struct inode *inode,
1269 struct delayed_call *done)
1275 return ERR_PTR(-ECHILD);
1277 page = read_mapping_page(inode->i_mapping, 0, NULL);
1279 return ERR_CAST(page);
1281 target = fscrypt_get_symlink(inode, page_address(page),
1282 inode->i_sb->s_blocksize, done);
1287 const struct inode_operations f2fs_encrypted_symlink_inode_operations = {
1288 .get_link = f2fs_encrypted_get_link,
1289 .getattr = f2fs_getattr,
1290 .setattr = f2fs_setattr,
1291 .listxattr = f2fs_listxattr,
1294 const struct inode_operations f2fs_dir_inode_operations = {
1295 .create = f2fs_create,
1296 .lookup = f2fs_lookup,
1298 .unlink = f2fs_unlink,
1299 .symlink = f2fs_symlink,
1300 .mkdir = f2fs_mkdir,
1301 .rmdir = f2fs_rmdir,
1302 .mknod = f2fs_mknod,
1303 .rename = f2fs_rename2,
1304 .tmpfile = f2fs_tmpfile,
1305 .getattr = f2fs_getattr,
1306 .setattr = f2fs_setattr,
1307 .get_acl = f2fs_get_acl,
1308 .set_acl = f2fs_set_acl,
1309 .listxattr = f2fs_listxattr,
1310 .fiemap = f2fs_fiemap,
1313 const struct inode_operations f2fs_symlink_inode_operations = {
1314 .get_link = f2fs_get_link,
1315 .getattr = f2fs_getattr,
1316 .setattr = f2fs_setattr,
1317 .listxattr = f2fs_listxattr,
1320 const struct inode_operations f2fs_special_inode_operations = {
1321 .getattr = f2fs_getattr,
1322 .setattr = f2fs_setattr,
1323 .get_acl = f2fs_get_acl,
1324 .set_acl = f2fs_set_acl,
1325 .listxattr = f2fs_listxattr,