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 user_namespace *mnt_userns,
26 struct inode *dir, umode_t mode)
28 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
31 bool nid_free = false;
36 inode = new_inode(dir->i_sb);
38 return ERR_PTR(-ENOMEM);
41 if (!f2fs_alloc_nid(sbi, &ino)) {
50 inode_init_owner(mnt_userns, inode, dir, mode);
54 inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
55 F2FS_I(inode)->i_crtime = inode->i_mtime;
56 inode->i_generation = prandom_u32();
58 if (S_ISDIR(inode->i_mode))
59 F2FS_I(inode)->i_current_depth = 1;
61 err = insert_inode_locked(inode);
67 if (f2fs_sb_has_project_quota(sbi) &&
68 (F2FS_I(dir)->i_flags & F2FS_PROJINHERIT_FL))
69 F2FS_I(inode)->i_projid = F2FS_I(dir)->i_projid;
71 F2FS_I(inode)->i_projid = make_kprojid(mnt_userns,
74 err = fscrypt_prepare_new_inode(dir, inode, &encrypt);
78 err = f2fs_dquot_initialize(inode);
82 set_inode_flag(inode, FI_NEW_INODE);
85 f2fs_set_encrypted_inode(inode);
87 if (f2fs_sb_has_extra_attr(sbi)) {
88 set_inode_flag(inode, FI_EXTRA_ATTR);
89 F2FS_I(inode)->i_extra_isize = F2FS_TOTAL_EXTRA_ATTR_SIZE;
92 if (test_opt(sbi, INLINE_XATTR))
93 set_inode_flag(inode, FI_INLINE_XATTR);
95 if (test_opt(sbi, INLINE_DATA) && f2fs_may_inline_data(inode))
96 set_inode_flag(inode, FI_INLINE_DATA);
97 if (f2fs_may_inline_dentry(inode))
98 set_inode_flag(inode, FI_INLINE_DENTRY);
100 if (f2fs_sb_has_flexible_inline_xattr(sbi)) {
101 f2fs_bug_on(sbi, !f2fs_has_extra_attr(inode));
102 if (f2fs_has_inline_xattr(inode))
103 xattr_size = F2FS_OPTION(sbi).inline_xattr_size;
104 /* Otherwise, will be 0 */
105 } else if (f2fs_has_inline_xattr(inode) ||
106 f2fs_has_inline_dentry(inode)) {
107 xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
109 F2FS_I(inode)->i_inline_xattr_size = xattr_size;
111 f2fs_init_extent_tree(inode, NULL);
113 stat_inc_inline_xattr(inode);
114 stat_inc_inline_inode(inode);
115 stat_inc_inline_dir(inode);
117 F2FS_I(inode)->i_flags =
118 f2fs_mask_flags(mode, F2FS_I(dir)->i_flags & F2FS_FL_INHERITED);
120 if (S_ISDIR(inode->i_mode))
121 F2FS_I(inode)->i_flags |= F2FS_INDEX_FL;
123 if (F2FS_I(inode)->i_flags & F2FS_PROJINHERIT_FL)
124 set_inode_flag(inode, FI_PROJ_INHERIT);
126 if (f2fs_sb_has_compression(sbi)) {
127 /* Inherit the compression flag in directory */
128 if ((F2FS_I(dir)->i_flags & F2FS_COMPR_FL) &&
129 f2fs_may_compress(inode))
130 set_compress_context(inode);
133 f2fs_set_inode_flags(inode);
135 trace_f2fs_new_inode(inode, 0);
139 trace_f2fs_new_inode(inode, err);
140 make_bad_inode(inode);
142 set_inode_flag(inode, FI_FREE_NID);
146 trace_f2fs_new_inode(inode, err);
148 inode->i_flags |= S_NOQUOTA;
150 set_inode_flag(inode, FI_FREE_NID);
152 unlock_new_inode(inode);
157 static inline int is_extension_exist(const unsigned char *s, const char *sub,
160 size_t slen = strlen(s);
161 size_t sublen = strlen(sub);
164 if (sublen == 1 && *sub == '*')
168 * filename format of multimedia file should be defined as:
169 * "filename + '.' + extension + (optional: '.' + temp extension)".
171 if (slen < sublen + 2)
175 /* file has no temp extension */
176 if (s[slen - sublen - 1] != '.')
178 return !strncasecmp(s + slen - sublen, sub, sublen);
181 for (i = 1; i < slen - sublen; i++) {
184 if (!strncasecmp(s + i + 1, sub, sublen))
192 * Set file's temperature for hot/cold data separation
194 static inline void set_file_temperature(struct f2fs_sb_info *sbi, struct inode *inode,
195 const unsigned char *name)
197 __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
198 int i, cold_count, hot_count;
200 f2fs_down_read(&sbi->sb_lock);
202 cold_count = le32_to_cpu(sbi->raw_super->extension_count);
203 hot_count = sbi->raw_super->hot_ext_count;
205 for (i = 0; i < cold_count + hot_count; i++) {
206 if (is_extension_exist(name, extlist[i], true))
210 f2fs_up_read(&sbi->sb_lock);
212 if (i == cold_count + hot_count)
216 file_set_cold(inode);
221 int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
224 __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
225 int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
226 int hot_count = sbi->raw_super->hot_ext_count;
227 int total_count = cold_count + hot_count;
232 if (total_count == F2FS_MAX_EXTENSION)
235 if (!hot && !cold_count)
237 if (hot && !hot_count)
249 for (i = start; i < count; i++) {
250 if (strcmp(name, extlist[i]))
256 memcpy(extlist[i], extlist[i + 1],
257 F2FS_EXTENSION_LEN * (total_count - i - 1));
258 memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN);
260 sbi->raw_super->hot_ext_count = hot_count - 1;
262 sbi->raw_super->extension_count =
263 cpu_to_le32(cold_count - 1);
271 memcpy(extlist[count], name, strlen(name));
272 sbi->raw_super->hot_ext_count = hot_count + 1;
274 char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN];
276 memcpy(buf, &extlist[cold_count],
277 F2FS_EXTENSION_LEN * hot_count);
278 memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN);
279 memcpy(extlist[cold_count], name, strlen(name));
280 memcpy(&extlist[cold_count + 1], buf,
281 F2FS_EXTENSION_LEN * hot_count);
282 sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1);
287 static void set_compress_inode(struct f2fs_sb_info *sbi, struct inode *inode,
288 const unsigned char *name)
290 __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
291 unsigned char (*noext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).noextensions;
292 unsigned char (*ext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).extensions;
293 unsigned char ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
294 unsigned char noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
295 int i, cold_count, hot_count;
297 if (!f2fs_sb_has_compression(sbi) ||
298 F2FS_I(inode)->i_flags & F2FS_NOCOMP_FL ||
299 !f2fs_may_compress(inode) ||
300 (!ext_cnt && !noext_cnt))
303 f2fs_down_read(&sbi->sb_lock);
305 cold_count = le32_to_cpu(sbi->raw_super->extension_count);
306 hot_count = sbi->raw_super->hot_ext_count;
308 for (i = cold_count; i < cold_count + hot_count; i++) {
309 if (is_extension_exist(name, extlist[i], false)) {
310 f2fs_up_read(&sbi->sb_lock);
315 f2fs_up_read(&sbi->sb_lock);
317 for (i = 0; i < noext_cnt; i++) {
318 if (is_extension_exist(name, noext[i], false)) {
319 f2fs_disable_compressed_file(inode);
324 if (is_inode_flag_set(inode, FI_COMPRESSED_FILE))
327 for (i = 0; i < ext_cnt; i++) {
328 if (!is_extension_exist(name, ext[i], false))
331 set_compress_context(inode);
336 static int f2fs_create(struct user_namespace *mnt_userns, struct inode *dir,
337 struct dentry *dentry, umode_t mode, bool excl)
339 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
344 if (unlikely(f2fs_cp_error(sbi)))
346 if (!f2fs_is_checkpoint_ready(sbi))
349 err = f2fs_dquot_initialize(dir);
353 inode = f2fs_new_inode(mnt_userns, dir, mode);
355 return PTR_ERR(inode);
357 if (!test_opt(sbi, DISABLE_EXT_IDENTIFY))
358 set_file_temperature(sbi, inode, dentry->d_name.name);
360 set_compress_inode(sbi, inode, dentry->d_name.name);
362 inode->i_op = &f2fs_file_inode_operations;
363 inode->i_fop = &f2fs_file_operations;
364 inode->i_mapping->a_ops = &f2fs_dblock_aops;
368 err = f2fs_add_link(dentry, inode);
373 f2fs_alloc_nid_done(sbi, ino);
375 d_instantiate_new(dentry, inode);
378 f2fs_sync_fs(sbi->sb, 1);
380 f2fs_balance_fs(sbi, true);
383 f2fs_handle_failed_inode(inode);
387 static int f2fs_link(struct dentry *old_dentry, struct inode *dir,
388 struct dentry *dentry)
390 struct inode *inode = d_inode(old_dentry);
391 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
394 if (unlikely(f2fs_cp_error(sbi)))
396 if (!f2fs_is_checkpoint_ready(sbi))
399 err = fscrypt_prepare_link(old_dentry, dir, dentry);
403 if (is_inode_flag_set(dir, FI_PROJ_INHERIT) &&
404 (!projid_eq(F2FS_I(dir)->i_projid,
405 F2FS_I(old_dentry->d_inode)->i_projid)))
408 err = f2fs_dquot_initialize(dir);
412 f2fs_balance_fs(sbi, true);
414 inode->i_ctime = current_time(inode);
417 set_inode_flag(inode, FI_INC_LINK);
419 err = f2fs_add_link(dentry, inode);
424 d_instantiate(dentry, inode);
427 f2fs_sync_fs(sbi->sb, 1);
430 clear_inode_flag(inode, FI_INC_LINK);
436 struct dentry *f2fs_get_parent(struct dentry *child)
439 unsigned long ino = f2fs_inode_by_name(d_inode(child), &dotdot_name, &page);
443 return ERR_CAST(page);
444 return ERR_PTR(-ENOENT);
446 return d_obtain_alias(f2fs_iget(child->d_sb, ino));
449 static int __recover_dot_dentries(struct inode *dir, nid_t pino)
451 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
452 struct qstr dot = QSTR_INIT(".", 1);
453 struct qstr dotdot = QSTR_INIT("..", 2);
454 struct f2fs_dir_entry *de;
458 if (f2fs_readonly(sbi->sb)) {
459 f2fs_info(sbi, "skip recovering inline_dots inode (ino:%lu, pino:%u) in readonly mountpoint",
464 err = f2fs_dquot_initialize(dir);
468 f2fs_balance_fs(sbi, true);
472 de = f2fs_find_entry(dir, &dot, &page);
474 f2fs_put_page(page, 0);
475 } else if (IS_ERR(page)) {
479 err = f2fs_do_add_link(dir, &dot, NULL, dir->i_ino, S_IFDIR);
484 de = f2fs_find_entry(dir, &dotdot, &page);
486 f2fs_put_page(page, 0);
487 else if (IS_ERR(page))
490 err = f2fs_do_add_link(dir, &dotdot, NULL, pino, S_IFDIR);
493 clear_inode_flag(dir, FI_INLINE_DOTS);
499 static struct dentry *f2fs_lookup(struct inode *dir, struct dentry *dentry,
502 struct inode *inode = NULL;
503 struct f2fs_dir_entry *de;
508 unsigned int root_ino = F2FS_ROOT_INO(F2FS_I_SB(dir));
509 struct f2fs_filename fname;
511 trace_f2fs_lookup_start(dir, dentry, flags);
513 if (dentry->d_name.len > F2FS_NAME_LEN) {
518 err = f2fs_prepare_lookup(dir, dentry, &fname);
519 generic_set_encrypted_ci_d_ops(dentry);
524 de = __f2fs_find_entry(dir, &fname, &page);
525 f2fs_free_filename(&fname);
536 ino = le32_to_cpu(de->ino);
537 f2fs_put_page(page, 0);
539 inode = f2fs_iget(dir->i_sb, ino);
541 err = PTR_ERR(inode);
545 if ((dir->i_ino == root_ino) && f2fs_has_inline_dots(dir)) {
546 err = __recover_dot_dentries(dir, root_ino);
551 if (f2fs_has_inline_dots(inode)) {
552 err = __recover_dot_dentries(inode, dir->i_ino);
556 if (IS_ENCRYPTED(dir) &&
557 (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode)) &&
558 !fscrypt_has_permitted_context(dir, inode)) {
559 f2fs_warn(F2FS_I_SB(inode), "Inconsistent encryption contexts: %lu/%lu",
560 dir->i_ino, inode->i_ino);
565 #if IS_ENABLED(CONFIG_UNICODE)
566 if (!inode && IS_CASEFOLDED(dir)) {
567 /* Eventually we want to call d_add_ci(dentry, NULL)
568 * for negative dentries in the encoding case as
569 * well. For now, prevent the negative dentry
572 trace_f2fs_lookup_end(dir, dentry, ino, err);
576 new = d_splice_alias(inode, dentry);
577 err = PTR_ERR_OR_ZERO(new);
578 trace_f2fs_lookup_end(dir, dentry, ino, !new ? -ENOENT : err);
583 trace_f2fs_lookup_end(dir, dentry, ino, err);
587 static int f2fs_unlink(struct inode *dir, struct dentry *dentry)
589 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
590 struct inode *inode = d_inode(dentry);
591 struct f2fs_dir_entry *de;
595 trace_f2fs_unlink_enter(dir, dentry);
597 if (unlikely(f2fs_cp_error(sbi))) {
602 err = f2fs_dquot_initialize(dir);
605 err = f2fs_dquot_initialize(inode);
609 de = f2fs_find_entry(dir, &dentry->d_name, &page);
616 f2fs_balance_fs(sbi, true);
619 err = f2fs_acquire_orphan_inode(sbi);
622 f2fs_put_page(page, 0);
625 f2fs_delete_entry(de, page, dir, inode);
626 #if IS_ENABLED(CONFIG_UNICODE)
627 /* VFS negative dentries are incompatible with Encoding and
628 * Case-insensitiveness. Eventually we'll want avoid
629 * invalidating the dentries here, alongside with returning the
630 * negative dentries at f2fs_lookup(), when it is better
631 * supported by the VFS for the CI case.
633 if (IS_CASEFOLDED(dir))
634 d_invalidate(dentry);
639 f2fs_sync_fs(sbi->sb, 1);
641 trace_f2fs_unlink_exit(inode, err);
645 static const char *f2fs_get_link(struct dentry *dentry,
647 struct delayed_call *done)
649 const char *link = page_get_link(dentry, inode, done);
651 if (!IS_ERR(link) && !*link) {
652 /* this is broken symlink case */
653 do_delayed_call(done);
654 clear_delayed_call(done);
655 link = ERR_PTR(-ENOENT);
660 static int f2fs_symlink(struct user_namespace *mnt_userns, struct inode *dir,
661 struct dentry *dentry, const char *symname)
663 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
665 size_t len = strlen(symname);
666 struct fscrypt_str disk_link;
669 if (unlikely(f2fs_cp_error(sbi)))
671 if (!f2fs_is_checkpoint_ready(sbi))
674 err = fscrypt_prepare_symlink(dir, symname, len, dir->i_sb->s_blocksize,
679 err = f2fs_dquot_initialize(dir);
683 inode = f2fs_new_inode(mnt_userns, dir, S_IFLNK | S_IRWXUGO);
685 return PTR_ERR(inode);
687 if (IS_ENCRYPTED(inode))
688 inode->i_op = &f2fs_encrypted_symlink_inode_operations;
690 inode->i_op = &f2fs_symlink_inode_operations;
691 inode_nohighmem(inode);
692 inode->i_mapping->a_ops = &f2fs_dblock_aops;
695 err = f2fs_add_link(dentry, inode);
697 goto out_f2fs_handle_failed_inode;
699 f2fs_alloc_nid_done(sbi, inode->i_ino);
701 err = fscrypt_encrypt_symlink(inode, symname, len, &disk_link);
705 err = page_symlink(inode, disk_link.name, disk_link.len);
708 d_instantiate_new(dentry, inode);
711 * Let's flush symlink data in order to avoid broken symlink as much as
712 * possible. Nevertheless, fsyncing is the best way, but there is no
713 * way to get a file descriptor in order to flush that.
715 * Note that, it needs to do dir->fsync to make this recoverable.
716 * If the symlink path is stored into inline_data, there is no
717 * performance regression.
720 filemap_write_and_wait_range(inode->i_mapping, 0,
724 f2fs_sync_fs(sbi->sb, 1);
726 f2fs_unlink(dir, dentry);
729 f2fs_balance_fs(sbi, true);
730 goto out_free_encrypted_link;
732 out_f2fs_handle_failed_inode:
733 f2fs_handle_failed_inode(inode);
734 out_free_encrypted_link:
735 if (disk_link.name != (unsigned char *)symname)
736 kfree(disk_link.name);
740 static int f2fs_mkdir(struct user_namespace *mnt_userns, struct inode *dir,
741 struct dentry *dentry, umode_t mode)
743 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
747 if (unlikely(f2fs_cp_error(sbi)))
750 err = f2fs_dquot_initialize(dir);
754 inode = f2fs_new_inode(mnt_userns, dir, S_IFDIR | mode);
756 return PTR_ERR(inode);
758 inode->i_op = &f2fs_dir_inode_operations;
759 inode->i_fop = &f2fs_dir_operations;
760 inode->i_mapping->a_ops = &f2fs_dblock_aops;
761 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
763 set_inode_flag(inode, FI_INC_LINK);
765 err = f2fs_add_link(dentry, inode);
770 f2fs_alloc_nid_done(sbi, inode->i_ino);
772 d_instantiate_new(dentry, inode);
775 f2fs_sync_fs(sbi->sb, 1);
777 f2fs_balance_fs(sbi, true);
781 clear_inode_flag(inode, FI_INC_LINK);
782 f2fs_handle_failed_inode(inode);
786 static int f2fs_rmdir(struct inode *dir, struct dentry *dentry)
788 struct inode *inode = d_inode(dentry);
790 if (f2fs_empty_dir(inode))
791 return f2fs_unlink(dir, dentry);
795 static int f2fs_mknod(struct user_namespace *mnt_userns, struct inode *dir,
796 struct dentry *dentry, umode_t mode, dev_t rdev)
798 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
802 if (unlikely(f2fs_cp_error(sbi)))
804 if (!f2fs_is_checkpoint_ready(sbi))
807 err = f2fs_dquot_initialize(dir);
811 inode = f2fs_new_inode(mnt_userns, dir, mode);
813 return PTR_ERR(inode);
815 init_special_inode(inode, inode->i_mode, rdev);
816 inode->i_op = &f2fs_special_inode_operations;
819 err = f2fs_add_link(dentry, inode);
824 f2fs_alloc_nid_done(sbi, inode->i_ino);
826 d_instantiate_new(dentry, inode);
829 f2fs_sync_fs(sbi->sb, 1);
831 f2fs_balance_fs(sbi, true);
834 f2fs_handle_failed_inode(inode);
838 static int __f2fs_tmpfile(struct user_namespace *mnt_userns, struct inode *dir,
839 struct dentry *dentry, umode_t mode,
840 struct inode **whiteout)
842 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
846 err = f2fs_dquot_initialize(dir);
850 inode = f2fs_new_inode(mnt_userns, dir, mode);
852 return PTR_ERR(inode);
855 init_special_inode(inode, inode->i_mode, WHITEOUT_DEV);
856 inode->i_op = &f2fs_special_inode_operations;
858 inode->i_op = &f2fs_file_inode_operations;
859 inode->i_fop = &f2fs_file_operations;
860 inode->i_mapping->a_ops = &f2fs_dblock_aops;
864 err = f2fs_acquire_orphan_inode(sbi);
868 err = f2fs_do_tmpfile(inode, dir);
873 * add this non-linked tmpfile to orphan list, in this way we could
874 * remove all unused data of tmpfile after abnormal power-off.
876 f2fs_add_orphan_inode(inode);
877 f2fs_alloc_nid_done(sbi, inode->i_ino);
880 f2fs_i_links_write(inode, false);
882 spin_lock(&inode->i_lock);
883 inode->i_state |= I_LINKABLE;
884 spin_unlock(&inode->i_lock);
888 d_tmpfile(dentry, inode);
890 /* link_count was changed by d_tmpfile as well. */
892 unlock_new_inode(inode);
894 f2fs_balance_fs(sbi, true);
898 f2fs_release_orphan_inode(sbi);
900 f2fs_handle_failed_inode(inode);
904 static int f2fs_tmpfile(struct user_namespace *mnt_userns, struct inode *dir,
905 struct dentry *dentry, umode_t mode)
907 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
909 if (unlikely(f2fs_cp_error(sbi)))
911 if (!f2fs_is_checkpoint_ready(sbi))
914 return __f2fs_tmpfile(mnt_userns, dir, dentry, mode, NULL);
917 static int f2fs_create_whiteout(struct user_namespace *mnt_userns,
918 struct inode *dir, struct inode **whiteout)
920 if (unlikely(f2fs_cp_error(F2FS_I_SB(dir))))
923 return __f2fs_tmpfile(mnt_userns, dir, NULL,
924 S_IFCHR | WHITEOUT_MODE, whiteout);
927 static int f2fs_rename(struct user_namespace *mnt_userns, struct inode *old_dir,
928 struct dentry *old_dentry, struct inode *new_dir,
929 struct dentry *new_dentry, unsigned int flags)
931 struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir);
932 struct inode *old_inode = d_inode(old_dentry);
933 struct inode *new_inode = d_inode(new_dentry);
934 struct inode *whiteout = NULL;
935 struct page *old_dir_page = NULL;
936 struct page *old_page, *new_page = NULL;
937 struct f2fs_dir_entry *old_dir_entry = NULL;
938 struct f2fs_dir_entry *old_entry;
939 struct f2fs_dir_entry *new_entry;
942 if (unlikely(f2fs_cp_error(sbi)))
944 if (!f2fs_is_checkpoint_ready(sbi))
947 if (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
948 (!projid_eq(F2FS_I(new_dir)->i_projid,
949 F2FS_I(old_dentry->d_inode)->i_projid)))
953 * If new_inode is null, the below renaming flow will
954 * add a link in old_dir which can conver inline_dir.
955 * After then, if we failed to get the entry due to other
956 * reasons like ENOMEM, we had to remove the new entry.
957 * Instead of adding such the error handling routine, let's
958 * simply convert first here.
960 if (old_dir == new_dir && !new_inode) {
961 err = f2fs_try_convert_inline_dir(old_dir, new_dentry);
966 if (flags & RENAME_WHITEOUT) {
967 err = f2fs_create_whiteout(mnt_userns, old_dir, &whiteout);
972 err = f2fs_dquot_initialize(old_dir);
976 err = f2fs_dquot_initialize(new_dir);
981 err = f2fs_dquot_initialize(new_inode);
987 old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page);
989 if (IS_ERR(old_page))
990 err = PTR_ERR(old_page);
994 if (S_ISDIR(old_inode->i_mode)) {
995 old_dir_entry = f2fs_parent_dir(old_inode, &old_dir_page);
996 if (!old_dir_entry) {
997 if (IS_ERR(old_dir_page))
998 err = PTR_ERR(old_dir_page);
1006 if (old_dir_entry && !f2fs_empty_dir(new_inode))
1010 new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name,
1013 if (IS_ERR(new_page))
1014 err = PTR_ERR(new_page);
1018 f2fs_balance_fs(sbi, true);
1022 err = f2fs_acquire_orphan_inode(sbi);
1026 f2fs_set_link(new_dir, new_entry, new_page, old_inode);
1029 new_inode->i_ctime = current_time(new_inode);
1030 f2fs_down_write(&F2FS_I(new_inode)->i_sem);
1032 f2fs_i_links_write(new_inode, false);
1033 f2fs_i_links_write(new_inode, false);
1034 f2fs_up_write(&F2FS_I(new_inode)->i_sem);
1036 if (!new_inode->i_nlink)
1037 f2fs_add_orphan_inode(new_inode);
1039 f2fs_release_orphan_inode(sbi);
1041 f2fs_balance_fs(sbi, true);
1045 err = f2fs_add_link(new_dentry, old_inode);
1047 f2fs_unlock_op(sbi);
1052 f2fs_i_links_write(new_dir, true);
1055 f2fs_down_write(&F2FS_I(old_inode)->i_sem);
1056 if (!old_dir_entry || whiteout)
1057 file_lost_pino(old_inode);
1059 /* adjust dir's i_pino to pass fsck check */
1060 f2fs_i_pino_write(old_inode, new_dir->i_ino);
1061 f2fs_up_write(&F2FS_I(old_inode)->i_sem);
1063 old_inode->i_ctime = current_time(old_inode);
1064 f2fs_mark_inode_dirty_sync(old_inode, false);
1066 f2fs_delete_entry(old_entry, old_page, old_dir, NULL);
1070 set_inode_flag(whiteout, FI_INC_LINK);
1071 err = f2fs_add_link(old_dentry, whiteout);
1075 spin_lock(&whiteout->i_lock);
1076 whiteout->i_state &= ~I_LINKABLE;
1077 spin_unlock(&whiteout->i_lock);
1082 if (old_dir_entry) {
1083 if (old_dir != new_dir && !whiteout)
1084 f2fs_set_link(old_inode, old_dir_entry,
1085 old_dir_page, new_dir);
1087 f2fs_put_page(old_dir_page, 0);
1088 f2fs_i_links_write(old_dir, false);
1090 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) {
1091 f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO);
1092 if (S_ISDIR(old_inode->i_mode))
1093 f2fs_add_ino_entry(sbi, old_inode->i_ino,
1097 f2fs_unlock_op(sbi);
1099 if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir))
1100 f2fs_sync_fs(sbi->sb, 1);
1102 f2fs_update_time(sbi, REQ_TIME);
1106 f2fs_unlock_op(sbi);
1107 f2fs_put_page(new_page, 0);
1110 f2fs_put_page(old_dir_page, 0);
1112 f2fs_put_page(old_page, 0);
1118 static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry,
1119 struct inode *new_dir, struct dentry *new_dentry)
1121 struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir);
1122 struct inode *old_inode = d_inode(old_dentry);
1123 struct inode *new_inode = d_inode(new_dentry);
1124 struct page *old_dir_page, *new_dir_page;
1125 struct page *old_page, *new_page;
1126 struct f2fs_dir_entry *old_dir_entry = NULL, *new_dir_entry = NULL;
1127 struct f2fs_dir_entry *old_entry, *new_entry;
1128 int old_nlink = 0, new_nlink = 0;
1131 if (unlikely(f2fs_cp_error(sbi)))
1133 if (!f2fs_is_checkpoint_ready(sbi))
1136 if ((is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
1137 !projid_eq(F2FS_I(new_dir)->i_projid,
1138 F2FS_I(old_dentry->d_inode)->i_projid)) ||
1139 (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
1140 !projid_eq(F2FS_I(old_dir)->i_projid,
1141 F2FS_I(new_dentry->d_inode)->i_projid)))
1144 err = f2fs_dquot_initialize(old_dir);
1148 err = f2fs_dquot_initialize(new_dir);
1153 old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page);
1155 if (IS_ERR(old_page))
1156 err = PTR_ERR(old_page);
1160 new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name, &new_page);
1162 if (IS_ERR(new_page))
1163 err = PTR_ERR(new_page);
1167 /* prepare for updating ".." directory entry info later */
1168 if (old_dir != new_dir) {
1169 if (S_ISDIR(old_inode->i_mode)) {
1170 old_dir_entry = f2fs_parent_dir(old_inode,
1172 if (!old_dir_entry) {
1173 if (IS_ERR(old_dir_page))
1174 err = PTR_ERR(old_dir_page);
1179 if (S_ISDIR(new_inode->i_mode)) {
1180 new_dir_entry = f2fs_parent_dir(new_inode,
1182 if (!new_dir_entry) {
1183 if (IS_ERR(new_dir_page))
1184 err = PTR_ERR(new_dir_page);
1191 * If cross rename between file and directory those are not
1192 * in the same directory, we will inc nlink of file's parent
1193 * later, so we should check upper boundary of its nlink.
1195 if ((!old_dir_entry || !new_dir_entry) &&
1196 old_dir_entry != new_dir_entry) {
1197 old_nlink = old_dir_entry ? -1 : 1;
1198 new_nlink = -old_nlink;
1200 if ((old_nlink > 0 && old_dir->i_nlink >= F2FS_LINK_MAX) ||
1201 (new_nlink > 0 && new_dir->i_nlink >= F2FS_LINK_MAX))
1205 f2fs_balance_fs(sbi, true);
1209 /* update ".." directory entry info of old dentry */
1211 f2fs_set_link(old_inode, old_dir_entry, old_dir_page, new_dir);
1213 /* update ".." directory entry info of new dentry */
1215 f2fs_set_link(new_inode, new_dir_entry, new_dir_page, old_dir);
1217 /* update directory entry info of old dir inode */
1218 f2fs_set_link(old_dir, old_entry, old_page, new_inode);
1220 f2fs_down_write(&F2FS_I(old_inode)->i_sem);
1222 file_lost_pino(old_inode);
1224 /* adjust dir's i_pino to pass fsck check */
1225 f2fs_i_pino_write(old_inode, new_dir->i_ino);
1226 f2fs_up_write(&F2FS_I(old_inode)->i_sem);
1228 old_dir->i_ctime = current_time(old_dir);
1230 f2fs_down_write(&F2FS_I(old_dir)->i_sem);
1231 f2fs_i_links_write(old_dir, old_nlink > 0);
1232 f2fs_up_write(&F2FS_I(old_dir)->i_sem);
1234 f2fs_mark_inode_dirty_sync(old_dir, false);
1236 /* update directory entry info of new dir inode */
1237 f2fs_set_link(new_dir, new_entry, new_page, old_inode);
1239 f2fs_down_write(&F2FS_I(new_inode)->i_sem);
1241 file_lost_pino(new_inode);
1243 /* adjust dir's i_pino to pass fsck check */
1244 f2fs_i_pino_write(new_inode, old_dir->i_ino);
1245 f2fs_up_write(&F2FS_I(new_inode)->i_sem);
1247 new_dir->i_ctime = current_time(new_dir);
1249 f2fs_down_write(&F2FS_I(new_dir)->i_sem);
1250 f2fs_i_links_write(new_dir, new_nlink > 0);
1251 f2fs_up_write(&F2FS_I(new_dir)->i_sem);
1253 f2fs_mark_inode_dirty_sync(new_dir, false);
1255 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) {
1256 f2fs_add_ino_entry(sbi, old_dir->i_ino, TRANS_DIR_INO);
1257 f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO);
1260 f2fs_unlock_op(sbi);
1262 if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir))
1263 f2fs_sync_fs(sbi->sb, 1);
1265 f2fs_update_time(sbi, REQ_TIME);
1268 if (new_dir_entry) {
1269 f2fs_put_page(new_dir_page, 0);
1272 if (old_dir_entry) {
1273 f2fs_put_page(old_dir_page, 0);
1276 f2fs_put_page(new_page, 0);
1278 f2fs_put_page(old_page, 0);
1283 static int f2fs_rename2(struct user_namespace *mnt_userns,
1284 struct inode *old_dir, struct dentry *old_dentry,
1285 struct inode *new_dir, struct dentry *new_dentry,
1290 if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE | RENAME_WHITEOUT))
1293 err = fscrypt_prepare_rename(old_dir, old_dentry, new_dir, new_dentry,
1298 if (flags & RENAME_EXCHANGE) {
1299 return f2fs_cross_rename(old_dir, old_dentry,
1300 new_dir, new_dentry);
1303 * VFS has already handled the new dentry existence case,
1304 * here, we just deal with "RENAME_NOREPLACE" as regular rename.
1306 return f2fs_rename(mnt_userns, old_dir, old_dentry,
1307 new_dir, new_dentry, flags);
1310 static const char *f2fs_encrypted_get_link(struct dentry *dentry,
1311 struct inode *inode,
1312 struct delayed_call *done)
1318 return ERR_PTR(-ECHILD);
1320 page = read_mapping_page(inode->i_mapping, 0, NULL);
1322 return ERR_CAST(page);
1324 target = fscrypt_get_symlink(inode, page_address(page),
1325 inode->i_sb->s_blocksize, done);
1330 static int f2fs_encrypted_symlink_getattr(struct user_namespace *mnt_userns,
1331 const struct path *path,
1332 struct kstat *stat, u32 request_mask,
1333 unsigned int query_flags)
1335 f2fs_getattr(mnt_userns, path, stat, request_mask, query_flags);
1337 return fscrypt_symlink_getattr(path, stat);
1340 const struct inode_operations f2fs_encrypted_symlink_inode_operations = {
1341 .get_link = f2fs_encrypted_get_link,
1342 .getattr = f2fs_encrypted_symlink_getattr,
1343 .setattr = f2fs_setattr,
1344 .listxattr = f2fs_listxattr,
1347 const struct inode_operations f2fs_dir_inode_operations = {
1348 .create = f2fs_create,
1349 .lookup = f2fs_lookup,
1351 .unlink = f2fs_unlink,
1352 .symlink = f2fs_symlink,
1353 .mkdir = f2fs_mkdir,
1354 .rmdir = f2fs_rmdir,
1355 .mknod = f2fs_mknod,
1356 .rename = f2fs_rename2,
1357 .tmpfile = f2fs_tmpfile,
1358 .getattr = f2fs_getattr,
1359 .setattr = f2fs_setattr,
1360 .get_acl = f2fs_get_acl,
1361 .set_acl = f2fs_set_acl,
1362 .listxattr = f2fs_listxattr,
1363 .fiemap = f2fs_fiemap,
1364 .fileattr_get = f2fs_fileattr_get,
1365 .fileattr_set = f2fs_fileattr_set,
1368 const struct inode_operations f2fs_symlink_inode_operations = {
1369 .get_link = f2fs_get_link,
1370 .getattr = f2fs_getattr,
1371 .setattr = f2fs_setattr,
1372 .listxattr = f2fs_listxattr,
1375 const struct inode_operations f2fs_special_inode_operations = {
1376 .getattr = f2fs_getattr,
1377 .setattr = f2fs_setattr,
1378 .get_acl = f2fs_get_acl,
1379 .set_acl = f2fs_set_acl,
1380 .listxattr = f2fs_listxattr,