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 inline bool is_extension_exist(const unsigned char *s, const char *sub,
28 size_t slen = strlen(s);
29 size_t sublen = strlen(sub);
32 if (sublen == 1 && *sub == '*')
36 * filename format of multimedia file should be defined as:
37 * "filename + '.' + extension + (optional: '.' + temp extension)".
39 if (slen < sublen + 2)
43 /* file has no temp extension */
44 if (s[slen - sublen - 1] != '.')
46 return !strncasecmp(s + slen - sublen, sub, sublen);
49 for (i = 1; i < slen - sublen; i++) {
52 if (!strncasecmp(s + i + 1, sub, sublen))
59 int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
62 __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
63 int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
64 int hot_count = sbi->raw_super->hot_ext_count;
65 int total_count = cold_count + hot_count;
70 if (total_count == F2FS_MAX_EXTENSION)
73 if (!hot && !cold_count)
75 if (hot && !hot_count)
87 for (i = start; i < count; i++) {
88 if (strcmp(name, extlist[i]))
94 memcpy(extlist[i], extlist[i + 1],
95 F2FS_EXTENSION_LEN * (total_count - i - 1));
96 memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN);
98 sbi->raw_super->hot_ext_count = hot_count - 1;
100 sbi->raw_super->extension_count =
101 cpu_to_le32(cold_count - 1);
109 memcpy(extlist[count], name, strlen(name));
110 sbi->raw_super->hot_ext_count = hot_count + 1;
112 char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN];
114 memcpy(buf, &extlist[cold_count],
115 F2FS_EXTENSION_LEN * hot_count);
116 memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN);
117 memcpy(extlist[cold_count], name, strlen(name));
118 memcpy(&extlist[cold_count + 1], buf,
119 F2FS_EXTENSION_LEN * hot_count);
120 sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1);
125 static void set_compress_new_inode(struct f2fs_sb_info *sbi, struct inode *dir,
126 struct inode *inode, const unsigned char *name)
128 __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
129 unsigned char (*noext)[F2FS_EXTENSION_LEN] =
130 F2FS_OPTION(sbi).noextensions;
131 unsigned char (*ext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).extensions;
132 unsigned char ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
133 unsigned char noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
134 int i, cold_count, hot_count;
136 if (!f2fs_sb_has_compression(sbi))
139 if (S_ISDIR(inode->i_mode))
142 /* This name comes only from normal files. */
146 /* Don't compress hot files. */
147 f2fs_down_read(&sbi->sb_lock);
148 cold_count = le32_to_cpu(sbi->raw_super->extension_count);
149 hot_count = sbi->raw_super->hot_ext_count;
150 for (i = cold_count; i < cold_count + hot_count; i++)
151 if (is_extension_exist(name, extlist[i], false))
153 f2fs_up_read(&sbi->sb_lock);
154 if (i < (cold_count + hot_count))
157 /* Don't compress unallowed extension. */
158 for (i = 0; i < noext_cnt; i++)
159 if (is_extension_exist(name, noext[i], false))
162 /* Compress wanting extension. */
163 for (i = 0; i < ext_cnt; i++) {
164 if (is_extension_exist(name, ext[i], false)) {
165 set_compress_context(inode);
170 /* Inherit the {no-}compression flag in directory */
171 if (F2FS_I(dir)->i_flags & F2FS_NOCOMP_FL) {
172 F2FS_I(inode)->i_flags |= F2FS_NOCOMP_FL;
173 f2fs_mark_inode_dirty_sync(inode, true);
174 } else if (F2FS_I(dir)->i_flags & F2FS_COMPR_FL) {
175 set_compress_context(inode);
180 * Set file's temperature for hot/cold data separation
182 static void set_file_temperature(struct f2fs_sb_info *sbi, struct inode *inode,
183 const unsigned char *name)
185 __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
186 int i, cold_count, hot_count;
188 f2fs_down_read(&sbi->sb_lock);
189 cold_count = le32_to_cpu(sbi->raw_super->extension_count);
190 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], true))
194 f2fs_up_read(&sbi->sb_lock);
196 if (i == cold_count + hot_count)
200 file_set_cold(inode);
205 static struct inode *f2fs_new_inode(struct mnt_idmap *idmap,
206 struct inode *dir, umode_t mode,
209 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
212 bool nid_free = false;
213 bool encrypt = false;
217 inode = new_inode(dir->i_sb);
219 return ERR_PTR(-ENOMEM);
221 if (!f2fs_alloc_nid(sbi, &ino)) {
228 inode_init_owner(idmap, inode, dir, mode);
232 inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
233 F2FS_I(inode)->i_crtime = inode->i_mtime;
234 inode->i_generation = get_random_u32();
236 if (S_ISDIR(inode->i_mode))
237 F2FS_I(inode)->i_current_depth = 1;
239 err = insert_inode_locked(inode);
245 if (f2fs_sb_has_project_quota(sbi) &&
246 (F2FS_I(dir)->i_flags & F2FS_PROJINHERIT_FL))
247 F2FS_I(inode)->i_projid = F2FS_I(dir)->i_projid;
249 F2FS_I(inode)->i_projid = make_kprojid(&init_user_ns,
252 err = fscrypt_prepare_new_inode(dir, inode, &encrypt);
256 err = f2fs_dquot_initialize(inode);
260 set_inode_flag(inode, FI_NEW_INODE);
263 f2fs_set_encrypted_inode(inode);
265 if (f2fs_sb_has_extra_attr(sbi)) {
266 set_inode_flag(inode, FI_EXTRA_ATTR);
267 F2FS_I(inode)->i_extra_isize = F2FS_TOTAL_EXTRA_ATTR_SIZE;
270 if (test_opt(sbi, INLINE_XATTR))
271 set_inode_flag(inode, FI_INLINE_XATTR);
273 if (f2fs_may_inline_dentry(inode))
274 set_inode_flag(inode, FI_INLINE_DENTRY);
276 if (f2fs_sb_has_flexible_inline_xattr(sbi)) {
277 f2fs_bug_on(sbi, !f2fs_has_extra_attr(inode));
278 if (f2fs_has_inline_xattr(inode))
279 xattr_size = F2FS_OPTION(sbi).inline_xattr_size;
280 /* Otherwise, will be 0 */
281 } else if (f2fs_has_inline_xattr(inode) ||
282 f2fs_has_inline_dentry(inode)) {
283 xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
285 F2FS_I(inode)->i_inline_xattr_size = xattr_size;
287 F2FS_I(inode)->i_flags =
288 f2fs_mask_flags(mode, F2FS_I(dir)->i_flags & F2FS_FL_INHERITED);
290 if (S_ISDIR(inode->i_mode))
291 F2FS_I(inode)->i_flags |= F2FS_INDEX_FL;
293 if (F2FS_I(inode)->i_flags & F2FS_PROJINHERIT_FL)
294 set_inode_flag(inode, FI_PROJ_INHERIT);
296 /* Check compression first. */
297 set_compress_new_inode(sbi, dir, inode, name);
299 /* Should enable inline_data after compression set */
300 if (test_opt(sbi, INLINE_DATA) && f2fs_may_inline_data(inode))
301 set_inode_flag(inode, FI_INLINE_DATA);
303 if (name && !test_opt(sbi, DISABLE_EXT_IDENTIFY))
304 set_file_temperature(sbi, inode, name);
306 stat_inc_inline_xattr(inode);
307 stat_inc_inline_inode(inode);
308 stat_inc_inline_dir(inode);
310 f2fs_set_inode_flags(inode);
312 f2fs_init_extent_tree(inode);
314 trace_f2fs_new_inode(inode, 0);
318 trace_f2fs_new_inode(inode, err);
319 make_bad_inode(inode);
321 set_inode_flag(inode, FI_FREE_NID);
325 trace_f2fs_new_inode(inode, err);
327 inode->i_flags |= S_NOQUOTA;
329 set_inode_flag(inode, FI_FREE_NID);
331 unlock_new_inode(inode);
336 static int f2fs_create(struct mnt_idmap *idmap, 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(idmap, dir, mode, dentry->d_name.name);
355 return PTR_ERR(inode);
357 inode->i_op = &f2fs_file_inode_operations;
358 inode->i_fop = &f2fs_file_operations;
359 inode->i_mapping->a_ops = &f2fs_dblock_aops;
363 err = f2fs_add_link(dentry, inode);
368 f2fs_alloc_nid_done(sbi, ino);
370 d_instantiate_new(dentry, inode);
373 f2fs_sync_fs(sbi->sb, 1);
375 f2fs_balance_fs(sbi, true);
378 f2fs_handle_failed_inode(inode);
382 static int f2fs_link(struct dentry *old_dentry, struct inode *dir,
383 struct dentry *dentry)
385 struct inode *inode = d_inode(old_dentry);
386 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
389 if (unlikely(f2fs_cp_error(sbi)))
391 if (!f2fs_is_checkpoint_ready(sbi))
394 err = fscrypt_prepare_link(old_dentry, dir, dentry);
398 if (is_inode_flag_set(dir, FI_PROJ_INHERIT) &&
399 (!projid_eq(F2FS_I(dir)->i_projid,
400 F2FS_I(old_dentry->d_inode)->i_projid)))
403 err = f2fs_dquot_initialize(dir);
407 f2fs_balance_fs(sbi, true);
409 inode->i_ctime = current_time(inode);
412 set_inode_flag(inode, FI_INC_LINK);
414 err = f2fs_add_link(dentry, inode);
419 d_instantiate(dentry, inode);
422 f2fs_sync_fs(sbi->sb, 1);
425 clear_inode_flag(inode, FI_INC_LINK);
431 struct dentry *f2fs_get_parent(struct dentry *child)
434 unsigned long ino = f2fs_inode_by_name(d_inode(child), &dotdot_name, &page);
438 return ERR_CAST(page);
439 return ERR_PTR(-ENOENT);
441 return d_obtain_alias(f2fs_iget(child->d_sb, ino));
444 static int __recover_dot_dentries(struct inode *dir, nid_t pino)
446 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
447 struct qstr dot = QSTR_INIT(".", 1);
448 struct qstr dotdot = QSTR_INIT("..", 2);
449 struct f2fs_dir_entry *de;
453 if (f2fs_readonly(sbi->sb)) {
454 f2fs_info(sbi, "skip recovering inline_dots inode (ino:%lu, pino:%u) in readonly mountpoint",
459 if (!S_ISDIR(dir->i_mode)) {
460 f2fs_err(sbi, "inconsistent inode status, skip recovering inline_dots inode (ino:%lu, i_mode:%u, pino:%u)",
461 dir->i_ino, dir->i_mode, pino);
462 set_sbi_flag(sbi, SBI_NEED_FSCK);
466 err = f2fs_dquot_initialize(dir);
470 f2fs_balance_fs(sbi, true);
474 de = f2fs_find_entry(dir, &dot, &page);
476 f2fs_put_page(page, 0);
477 } else if (IS_ERR(page)) {
481 err = f2fs_do_add_link(dir, &dot, NULL, dir->i_ino, S_IFDIR);
486 de = f2fs_find_entry(dir, &dotdot, &page);
488 f2fs_put_page(page, 0);
489 else if (IS_ERR(page))
492 err = f2fs_do_add_link(dir, &dotdot, NULL, pino, S_IFDIR);
495 clear_inode_flag(dir, FI_INLINE_DOTS);
501 static struct dentry *f2fs_lookup(struct inode *dir, struct dentry *dentry,
504 struct inode *inode = NULL;
505 struct f2fs_dir_entry *de;
510 unsigned int root_ino = F2FS_ROOT_INO(F2FS_I_SB(dir));
511 struct f2fs_filename fname;
513 trace_f2fs_lookup_start(dir, dentry, flags);
515 if (dentry->d_name.len > F2FS_NAME_LEN) {
520 err = f2fs_prepare_lookup(dir, dentry, &fname);
521 generic_set_encrypted_ci_d_ops(dentry);
526 de = __f2fs_find_entry(dir, &fname, &page);
527 f2fs_free_filename(&fname);
538 ino = le32_to_cpu(de->ino);
539 f2fs_put_page(page, 0);
541 inode = f2fs_iget(dir->i_sb, ino);
543 err = PTR_ERR(inode);
547 if ((dir->i_ino == root_ino) && f2fs_has_inline_dots(dir)) {
548 err = __recover_dot_dentries(dir, root_ino);
553 if (f2fs_has_inline_dots(inode)) {
554 err = __recover_dot_dentries(inode, dir->i_ino);
558 if (IS_ENCRYPTED(dir) &&
559 (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode)) &&
560 !fscrypt_has_permitted_context(dir, inode)) {
561 f2fs_warn(F2FS_I_SB(inode), "Inconsistent encryption contexts: %lu/%lu",
562 dir->i_ino, inode->i_ino);
567 #if IS_ENABLED(CONFIG_UNICODE)
568 if (!inode && IS_CASEFOLDED(dir)) {
569 /* Eventually we want to call d_add_ci(dentry, NULL)
570 * for negative dentries in the encoding case as
571 * well. For now, prevent the negative dentry
574 trace_f2fs_lookup_end(dir, dentry, ino, err);
578 new = d_splice_alias(inode, dentry);
579 err = PTR_ERR_OR_ZERO(new);
580 trace_f2fs_lookup_end(dir, dentry, ino, !new ? -ENOENT : err);
585 trace_f2fs_lookup_end(dir, dentry, ino, err);
589 static int f2fs_unlink(struct inode *dir, struct dentry *dentry)
591 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
592 struct inode *inode = d_inode(dentry);
593 struct f2fs_dir_entry *de;
597 trace_f2fs_unlink_enter(dir, dentry);
599 if (unlikely(f2fs_cp_error(sbi))) {
604 err = f2fs_dquot_initialize(dir);
607 err = f2fs_dquot_initialize(inode);
611 de = f2fs_find_entry(dir, &dentry->d_name, &page);
618 f2fs_balance_fs(sbi, true);
621 err = f2fs_acquire_orphan_inode(sbi);
624 f2fs_put_page(page, 0);
627 f2fs_delete_entry(de, page, dir, inode);
630 #if IS_ENABLED(CONFIG_UNICODE)
631 /* VFS negative dentries are incompatible with Encoding and
632 * Case-insensitiveness. Eventually we'll want avoid
633 * invalidating the dentries here, alongside with returning the
634 * negative dentries at f2fs_lookup(), when it is better
635 * supported by the VFS for the CI case.
637 if (IS_CASEFOLDED(dir))
638 d_invalidate(dentry);
641 f2fs_sync_fs(sbi->sb, 1);
643 trace_f2fs_unlink_exit(inode, err);
647 static const char *f2fs_get_link(struct dentry *dentry,
649 struct delayed_call *done)
651 const char *link = page_get_link(dentry, inode, done);
653 if (!IS_ERR(link) && !*link) {
654 /* this is broken symlink case */
655 do_delayed_call(done);
656 clear_delayed_call(done);
657 link = ERR_PTR(-ENOENT);
662 static int f2fs_symlink(struct mnt_idmap *idmap, struct inode *dir,
663 struct dentry *dentry, const char *symname)
665 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
667 size_t len = strlen(symname);
668 struct fscrypt_str disk_link;
671 if (unlikely(f2fs_cp_error(sbi)))
673 if (!f2fs_is_checkpoint_ready(sbi))
676 err = fscrypt_prepare_symlink(dir, symname, len, dir->i_sb->s_blocksize,
681 err = f2fs_dquot_initialize(dir);
685 inode = f2fs_new_inode(idmap, dir, S_IFLNK | S_IRWXUGO, NULL);
687 return PTR_ERR(inode);
689 if (IS_ENCRYPTED(inode))
690 inode->i_op = &f2fs_encrypted_symlink_inode_operations;
692 inode->i_op = &f2fs_symlink_inode_operations;
693 inode_nohighmem(inode);
694 inode->i_mapping->a_ops = &f2fs_dblock_aops;
697 err = f2fs_add_link(dentry, inode);
699 goto out_f2fs_handle_failed_inode;
701 f2fs_alloc_nid_done(sbi, inode->i_ino);
703 err = fscrypt_encrypt_symlink(inode, symname, len, &disk_link);
707 err = page_symlink(inode, disk_link.name, disk_link.len);
710 d_instantiate_new(dentry, inode);
713 * Let's flush symlink data in order to avoid broken symlink as much as
714 * possible. Nevertheless, fsyncing is the best way, but there is no
715 * way to get a file descriptor in order to flush that.
717 * Note that, it needs to do dir->fsync to make this recoverable.
718 * If the symlink path is stored into inline_data, there is no
719 * performance regression.
722 filemap_write_and_wait_range(inode->i_mapping, 0,
726 f2fs_sync_fs(sbi->sb, 1);
728 f2fs_unlink(dir, dentry);
731 f2fs_balance_fs(sbi, true);
732 goto out_free_encrypted_link;
734 out_f2fs_handle_failed_inode:
735 f2fs_handle_failed_inode(inode);
736 out_free_encrypted_link:
737 if (disk_link.name != (unsigned char *)symname)
738 kfree(disk_link.name);
742 static int f2fs_mkdir(struct mnt_idmap *idmap, struct inode *dir,
743 struct dentry *dentry, umode_t mode)
745 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
749 if (unlikely(f2fs_cp_error(sbi)))
752 err = f2fs_dquot_initialize(dir);
756 inode = f2fs_new_inode(idmap, dir, S_IFDIR | mode, NULL);
758 return PTR_ERR(inode);
760 inode->i_op = &f2fs_dir_inode_operations;
761 inode->i_fop = &f2fs_dir_operations;
762 inode->i_mapping->a_ops = &f2fs_dblock_aops;
763 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
765 set_inode_flag(inode, FI_INC_LINK);
767 err = f2fs_add_link(dentry, inode);
772 f2fs_alloc_nid_done(sbi, inode->i_ino);
774 d_instantiate_new(dentry, inode);
777 f2fs_sync_fs(sbi->sb, 1);
779 f2fs_balance_fs(sbi, true);
783 clear_inode_flag(inode, FI_INC_LINK);
784 f2fs_handle_failed_inode(inode);
788 static int f2fs_rmdir(struct inode *dir, struct dentry *dentry)
790 struct inode *inode = d_inode(dentry);
792 if (f2fs_empty_dir(inode))
793 return f2fs_unlink(dir, dentry);
797 static int f2fs_mknod(struct mnt_idmap *idmap, struct inode *dir,
798 struct dentry *dentry, umode_t mode, dev_t rdev)
800 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
804 if (unlikely(f2fs_cp_error(sbi)))
806 if (!f2fs_is_checkpoint_ready(sbi))
809 err = f2fs_dquot_initialize(dir);
813 inode = f2fs_new_inode(idmap, dir, mode, NULL);
815 return PTR_ERR(inode);
817 init_special_inode(inode, inode->i_mode, rdev);
818 inode->i_op = &f2fs_special_inode_operations;
821 err = f2fs_add_link(dentry, inode);
826 f2fs_alloc_nid_done(sbi, inode->i_ino);
828 d_instantiate_new(dentry, inode);
831 f2fs_sync_fs(sbi->sb, 1);
833 f2fs_balance_fs(sbi, true);
836 f2fs_handle_failed_inode(inode);
840 static int __f2fs_tmpfile(struct mnt_idmap *idmap, struct inode *dir,
841 struct file *file, umode_t mode, bool is_whiteout,
842 struct inode **new_inode)
844 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
848 err = f2fs_dquot_initialize(dir);
852 inode = f2fs_new_inode(idmap, dir, mode, NULL);
854 return PTR_ERR(inode);
857 init_special_inode(inode, inode->i_mode, WHITEOUT_DEV);
858 inode->i_op = &f2fs_special_inode_operations;
860 inode->i_op = &f2fs_file_inode_operations;
861 inode->i_fop = &f2fs_file_operations;
862 inode->i_mapping->a_ops = &f2fs_dblock_aops;
866 err = f2fs_acquire_orphan_inode(sbi);
870 err = f2fs_do_tmpfile(inode, dir);
875 * add this non-linked tmpfile to orphan list, in this way we could
876 * remove all unused data of tmpfile after abnormal power-off.
878 f2fs_add_orphan_inode(inode);
879 f2fs_alloc_nid_done(sbi, inode->i_ino);
882 f2fs_i_links_write(inode, false);
884 spin_lock(&inode->i_lock);
885 inode->i_state |= I_LINKABLE;
886 spin_unlock(&inode->i_lock);
889 d_tmpfile(file, inode);
891 f2fs_i_links_write(inode, false);
893 /* link_count was changed by d_tmpfile as well. */
895 unlock_new_inode(inode);
900 f2fs_balance_fs(sbi, true);
904 f2fs_release_orphan_inode(sbi);
906 f2fs_handle_failed_inode(inode);
910 static int f2fs_tmpfile(struct mnt_idmap *idmap, struct inode *dir,
911 struct file *file, umode_t mode)
913 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
916 if (unlikely(f2fs_cp_error(sbi)))
918 if (!f2fs_is_checkpoint_ready(sbi))
921 err = __f2fs_tmpfile(idmap, dir, file, mode, false, NULL);
923 return finish_open_simple(file, err);
926 static int f2fs_create_whiteout(struct mnt_idmap *idmap,
927 struct inode *dir, struct inode **whiteout)
929 return __f2fs_tmpfile(idmap, dir, NULL,
930 S_IFCHR | WHITEOUT_MODE, true, whiteout);
933 int f2fs_get_tmpfile(struct mnt_idmap *idmap, struct inode *dir,
934 struct inode **new_inode)
936 return __f2fs_tmpfile(idmap, dir, NULL, S_IFREG, false, new_inode);
939 static int f2fs_rename(struct mnt_idmap *idmap, struct inode *old_dir,
940 struct dentry *old_dentry, struct inode *new_dir,
941 struct dentry *new_dentry, unsigned int flags)
943 struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir);
944 struct inode *old_inode = d_inode(old_dentry);
945 struct inode *new_inode = d_inode(new_dentry);
946 struct inode *whiteout = NULL;
947 struct page *old_dir_page = NULL;
948 struct page *old_page, *new_page = NULL;
949 struct f2fs_dir_entry *old_dir_entry = NULL;
950 struct f2fs_dir_entry *old_entry;
951 struct f2fs_dir_entry *new_entry;
954 if (unlikely(f2fs_cp_error(sbi)))
956 if (!f2fs_is_checkpoint_ready(sbi))
959 if (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
960 (!projid_eq(F2FS_I(new_dir)->i_projid,
961 F2FS_I(old_dentry->d_inode)->i_projid)))
965 * If new_inode is null, the below renaming flow will
966 * add a link in old_dir which can convert inline_dir.
967 * After then, if we failed to get the entry due to other
968 * reasons like ENOMEM, we had to remove the new entry.
969 * Instead of adding such the error handling routine, let's
970 * simply convert first here.
972 if (old_dir == new_dir && !new_inode) {
973 err = f2fs_try_convert_inline_dir(old_dir, new_dentry);
978 if (flags & RENAME_WHITEOUT) {
979 err = f2fs_create_whiteout(idmap, old_dir, &whiteout);
984 err = f2fs_dquot_initialize(old_dir);
988 err = f2fs_dquot_initialize(new_dir);
993 err = f2fs_dquot_initialize(new_inode);
999 old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page);
1001 if (IS_ERR(old_page))
1002 err = PTR_ERR(old_page);
1006 if (S_ISDIR(old_inode->i_mode)) {
1007 old_dir_entry = f2fs_parent_dir(old_inode, &old_dir_page);
1008 if (!old_dir_entry) {
1009 if (IS_ERR(old_dir_page))
1010 err = PTR_ERR(old_dir_page);
1018 if (old_dir_entry && !f2fs_empty_dir(new_inode))
1022 new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name,
1025 if (IS_ERR(new_page))
1026 err = PTR_ERR(new_page);
1030 f2fs_balance_fs(sbi, true);
1034 err = f2fs_acquire_orphan_inode(sbi);
1038 f2fs_set_link(new_dir, new_entry, new_page, old_inode);
1041 new_inode->i_ctime = current_time(new_inode);
1042 f2fs_down_write(&F2FS_I(new_inode)->i_sem);
1044 f2fs_i_links_write(new_inode, false);
1045 f2fs_i_links_write(new_inode, false);
1046 f2fs_up_write(&F2FS_I(new_inode)->i_sem);
1048 if (!new_inode->i_nlink)
1049 f2fs_add_orphan_inode(new_inode);
1051 f2fs_release_orphan_inode(sbi);
1053 f2fs_balance_fs(sbi, true);
1057 err = f2fs_add_link(new_dentry, old_inode);
1059 f2fs_unlock_op(sbi);
1064 f2fs_i_links_write(new_dir, true);
1067 f2fs_down_write(&F2FS_I(old_inode)->i_sem);
1068 if (!old_dir_entry || whiteout)
1069 file_lost_pino(old_inode);
1071 /* adjust dir's i_pino to pass fsck check */
1072 f2fs_i_pino_write(old_inode, new_dir->i_ino);
1073 f2fs_up_write(&F2FS_I(old_inode)->i_sem);
1075 old_inode->i_ctime = current_time(old_inode);
1076 f2fs_mark_inode_dirty_sync(old_inode, false);
1078 f2fs_delete_entry(old_entry, old_page, old_dir, NULL);
1082 set_inode_flag(whiteout, FI_INC_LINK);
1083 err = f2fs_add_link(old_dentry, whiteout);
1087 spin_lock(&whiteout->i_lock);
1088 whiteout->i_state &= ~I_LINKABLE;
1089 spin_unlock(&whiteout->i_lock);
1094 if (old_dir_entry) {
1095 if (old_dir != new_dir && !whiteout)
1096 f2fs_set_link(old_inode, old_dir_entry,
1097 old_dir_page, new_dir);
1099 f2fs_put_page(old_dir_page, 0);
1100 f2fs_i_links_write(old_dir, false);
1102 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) {
1103 f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO);
1104 if (S_ISDIR(old_inode->i_mode))
1105 f2fs_add_ino_entry(sbi, old_inode->i_ino,
1109 f2fs_unlock_op(sbi);
1111 if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir))
1112 f2fs_sync_fs(sbi->sb, 1);
1114 f2fs_update_time(sbi, REQ_TIME);
1118 f2fs_unlock_op(sbi);
1119 f2fs_put_page(new_page, 0);
1122 f2fs_put_page(old_dir_page, 0);
1124 f2fs_put_page(old_page, 0);
1130 static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry,
1131 struct inode *new_dir, struct dentry *new_dentry)
1133 struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir);
1134 struct inode *old_inode = d_inode(old_dentry);
1135 struct inode *new_inode = d_inode(new_dentry);
1136 struct page *old_dir_page, *new_dir_page;
1137 struct page *old_page, *new_page;
1138 struct f2fs_dir_entry *old_dir_entry = NULL, *new_dir_entry = NULL;
1139 struct f2fs_dir_entry *old_entry, *new_entry;
1140 int old_nlink = 0, new_nlink = 0;
1143 if (unlikely(f2fs_cp_error(sbi)))
1145 if (!f2fs_is_checkpoint_ready(sbi))
1148 if ((is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
1149 !projid_eq(F2FS_I(new_dir)->i_projid,
1150 F2FS_I(old_dentry->d_inode)->i_projid)) ||
1151 (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
1152 !projid_eq(F2FS_I(old_dir)->i_projid,
1153 F2FS_I(new_dentry->d_inode)->i_projid)))
1156 err = f2fs_dquot_initialize(old_dir);
1160 err = f2fs_dquot_initialize(new_dir);
1165 old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page);
1167 if (IS_ERR(old_page))
1168 err = PTR_ERR(old_page);
1172 new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name, &new_page);
1174 if (IS_ERR(new_page))
1175 err = PTR_ERR(new_page);
1179 /* prepare for updating ".." directory entry info later */
1180 if (old_dir != new_dir) {
1181 if (S_ISDIR(old_inode->i_mode)) {
1182 old_dir_entry = f2fs_parent_dir(old_inode,
1184 if (!old_dir_entry) {
1185 if (IS_ERR(old_dir_page))
1186 err = PTR_ERR(old_dir_page);
1191 if (S_ISDIR(new_inode->i_mode)) {
1192 new_dir_entry = f2fs_parent_dir(new_inode,
1194 if (!new_dir_entry) {
1195 if (IS_ERR(new_dir_page))
1196 err = PTR_ERR(new_dir_page);
1203 * If cross rename between file and directory those are not
1204 * in the same directory, we will inc nlink of file's parent
1205 * later, so we should check upper boundary of its nlink.
1207 if ((!old_dir_entry || !new_dir_entry) &&
1208 old_dir_entry != new_dir_entry) {
1209 old_nlink = old_dir_entry ? -1 : 1;
1210 new_nlink = -old_nlink;
1212 if ((old_nlink > 0 && old_dir->i_nlink >= F2FS_LINK_MAX) ||
1213 (new_nlink > 0 && new_dir->i_nlink >= F2FS_LINK_MAX))
1217 f2fs_balance_fs(sbi, true);
1221 /* update ".." directory entry info of old dentry */
1223 f2fs_set_link(old_inode, old_dir_entry, old_dir_page, new_dir);
1225 /* update ".." directory entry info of new dentry */
1227 f2fs_set_link(new_inode, new_dir_entry, new_dir_page, old_dir);
1229 /* update directory entry info of old dir inode */
1230 f2fs_set_link(old_dir, old_entry, old_page, new_inode);
1232 f2fs_down_write(&F2FS_I(old_inode)->i_sem);
1234 file_lost_pino(old_inode);
1236 /* adjust dir's i_pino to pass fsck check */
1237 f2fs_i_pino_write(old_inode, new_dir->i_ino);
1238 f2fs_up_write(&F2FS_I(old_inode)->i_sem);
1240 old_dir->i_ctime = current_time(old_dir);
1242 f2fs_down_write(&F2FS_I(old_dir)->i_sem);
1243 f2fs_i_links_write(old_dir, old_nlink > 0);
1244 f2fs_up_write(&F2FS_I(old_dir)->i_sem);
1246 f2fs_mark_inode_dirty_sync(old_dir, false);
1248 /* update directory entry info of new dir inode */
1249 f2fs_set_link(new_dir, new_entry, new_page, old_inode);
1251 f2fs_down_write(&F2FS_I(new_inode)->i_sem);
1253 file_lost_pino(new_inode);
1255 /* adjust dir's i_pino to pass fsck check */
1256 f2fs_i_pino_write(new_inode, old_dir->i_ino);
1257 f2fs_up_write(&F2FS_I(new_inode)->i_sem);
1259 new_dir->i_ctime = current_time(new_dir);
1261 f2fs_down_write(&F2FS_I(new_dir)->i_sem);
1262 f2fs_i_links_write(new_dir, new_nlink > 0);
1263 f2fs_up_write(&F2FS_I(new_dir)->i_sem);
1265 f2fs_mark_inode_dirty_sync(new_dir, false);
1267 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) {
1268 f2fs_add_ino_entry(sbi, old_dir->i_ino, TRANS_DIR_INO);
1269 f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO);
1272 f2fs_unlock_op(sbi);
1274 if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir))
1275 f2fs_sync_fs(sbi->sb, 1);
1277 f2fs_update_time(sbi, REQ_TIME);
1280 if (new_dir_entry) {
1281 f2fs_put_page(new_dir_page, 0);
1284 if (old_dir_entry) {
1285 f2fs_put_page(old_dir_page, 0);
1288 f2fs_put_page(new_page, 0);
1290 f2fs_put_page(old_page, 0);
1295 static int f2fs_rename2(struct mnt_idmap *idmap,
1296 struct inode *old_dir, struct dentry *old_dentry,
1297 struct inode *new_dir, struct dentry *new_dentry,
1302 if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE | RENAME_WHITEOUT))
1305 err = fscrypt_prepare_rename(old_dir, old_dentry, new_dir, new_dentry,
1310 if (flags & RENAME_EXCHANGE) {
1311 return f2fs_cross_rename(old_dir, old_dentry,
1312 new_dir, new_dentry);
1315 * VFS has already handled the new dentry existence case,
1316 * here, we just deal with "RENAME_NOREPLACE" as regular rename.
1318 return f2fs_rename(idmap, old_dir, old_dentry,
1319 new_dir, new_dentry, flags);
1322 static const char *f2fs_encrypted_get_link(struct dentry *dentry,
1323 struct inode *inode,
1324 struct delayed_call *done)
1330 return ERR_PTR(-ECHILD);
1332 page = read_mapping_page(inode->i_mapping, 0, NULL);
1334 return ERR_CAST(page);
1336 target = fscrypt_get_symlink(inode, page_address(page),
1337 inode->i_sb->s_blocksize, done);
1342 static int f2fs_encrypted_symlink_getattr(struct mnt_idmap *idmap,
1343 const struct path *path,
1344 struct kstat *stat, u32 request_mask,
1345 unsigned int query_flags)
1347 f2fs_getattr(idmap, path, stat, request_mask, query_flags);
1349 return fscrypt_symlink_getattr(path, stat);
1352 const struct inode_operations f2fs_encrypted_symlink_inode_operations = {
1353 .get_link = f2fs_encrypted_get_link,
1354 .getattr = f2fs_encrypted_symlink_getattr,
1355 .setattr = f2fs_setattr,
1356 .listxattr = f2fs_listxattr,
1359 const struct inode_operations f2fs_dir_inode_operations = {
1360 .create = f2fs_create,
1361 .lookup = f2fs_lookup,
1363 .unlink = f2fs_unlink,
1364 .symlink = f2fs_symlink,
1365 .mkdir = f2fs_mkdir,
1366 .rmdir = f2fs_rmdir,
1367 .mknod = f2fs_mknod,
1368 .rename = f2fs_rename2,
1369 .tmpfile = f2fs_tmpfile,
1370 .getattr = f2fs_getattr,
1371 .setattr = f2fs_setattr,
1372 .get_inode_acl = f2fs_get_acl,
1373 .set_acl = f2fs_set_acl,
1374 .listxattr = f2fs_listxattr,
1375 .fiemap = f2fs_fiemap,
1376 .fileattr_get = f2fs_fileattr_get,
1377 .fileattr_set = f2fs_fileattr_set,
1380 const struct inode_operations f2fs_symlink_inode_operations = {
1381 .get_link = f2fs_get_link,
1382 .getattr = f2fs_getattr,
1383 .setattr = f2fs_setattr,
1384 .listxattr = f2fs_listxattr,
1387 const struct inode_operations f2fs_special_inode_operations = {
1388 .getattr = f2fs_getattr,
1389 .setattr = f2fs_setattr,
1390 .get_inode_acl = f2fs_get_acl,
1391 .set_acl = f2fs_set_acl,
1392 .listxattr = f2fs_listxattr,