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,
26 bool tmp_ext, bool tmp_dot)
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)) {
55 if (i == slen - sublen - 1 || s[i + 1 + sublen] == '.')
63 static inline bool is_temperature_extension(const unsigned char *s, const char *sub)
65 return is_extension_exist(s, sub, true, false);
68 static inline bool is_compress_extension(const unsigned char *s, const char *sub)
70 return is_extension_exist(s, sub, true, true);
73 int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
76 __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
77 int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
78 int hot_count = sbi->raw_super->hot_ext_count;
79 int total_count = cold_count + hot_count;
84 if (total_count == F2FS_MAX_EXTENSION)
87 if (!hot && !cold_count)
89 if (hot && !hot_count)
101 for (i = start; i < count; i++) {
102 if (strcmp(name, extlist[i]))
108 memcpy(extlist[i], extlist[i + 1],
109 F2FS_EXTENSION_LEN * (total_count - i - 1));
110 memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN);
112 sbi->raw_super->hot_ext_count = hot_count - 1;
114 sbi->raw_super->extension_count =
115 cpu_to_le32(cold_count - 1);
123 memcpy(extlist[count], name, strlen(name));
124 sbi->raw_super->hot_ext_count = hot_count + 1;
126 char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN];
128 memcpy(buf, &extlist[cold_count],
129 F2FS_EXTENSION_LEN * hot_count);
130 memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN);
131 memcpy(extlist[cold_count], name, strlen(name));
132 memcpy(&extlist[cold_count + 1], buf,
133 F2FS_EXTENSION_LEN * hot_count);
134 sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1);
139 static void set_compress_new_inode(struct f2fs_sb_info *sbi, struct inode *dir,
140 struct inode *inode, const unsigned char *name)
142 __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
143 unsigned char (*noext)[F2FS_EXTENSION_LEN] =
144 F2FS_OPTION(sbi).noextensions;
145 unsigned char (*ext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).extensions;
146 unsigned char ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
147 unsigned char noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
148 int i, cold_count, hot_count;
150 if (!f2fs_sb_has_compression(sbi))
153 if (S_ISDIR(inode->i_mode))
156 /* This name comes only from normal files. */
160 /* Don't compress hot files. */
161 f2fs_down_read(&sbi->sb_lock);
162 cold_count = le32_to_cpu(sbi->raw_super->extension_count);
163 hot_count = sbi->raw_super->hot_ext_count;
164 for (i = cold_count; i < cold_count + hot_count; i++)
165 if (is_temperature_extension(name, extlist[i]))
167 f2fs_up_read(&sbi->sb_lock);
168 if (i < (cold_count + hot_count))
171 /* Don't compress unallowed extension. */
172 for (i = 0; i < noext_cnt; i++)
173 if (is_compress_extension(name, noext[i]))
176 /* Compress wanting extension. */
177 for (i = 0; i < ext_cnt; i++) {
178 if (is_compress_extension(name, ext[i])) {
179 set_compress_context(inode);
184 /* Inherit the {no-}compression flag in directory */
185 if (F2FS_I(dir)->i_flags & F2FS_NOCOMP_FL) {
186 F2FS_I(inode)->i_flags |= F2FS_NOCOMP_FL;
187 f2fs_mark_inode_dirty_sync(inode, true);
188 } else if (F2FS_I(dir)->i_flags & F2FS_COMPR_FL) {
189 set_compress_context(inode);
194 * Set file's temperature for hot/cold data separation
196 static void set_file_temperature(struct f2fs_sb_info *sbi, struct inode *inode,
197 const unsigned char *name)
199 __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
200 int i, cold_count, hot_count;
202 f2fs_down_read(&sbi->sb_lock);
203 cold_count = le32_to_cpu(sbi->raw_super->extension_count);
204 hot_count = sbi->raw_super->hot_ext_count;
205 for (i = 0; i < cold_count + hot_count; i++)
206 if (is_temperature_extension(name, extlist[i]))
208 f2fs_up_read(&sbi->sb_lock);
210 if (i == cold_count + hot_count)
214 file_set_cold(inode);
219 static struct inode *f2fs_new_inode(struct mnt_idmap *idmap,
220 struct inode *dir, umode_t mode,
223 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
226 bool nid_free = false;
227 bool encrypt = false;
231 inode = new_inode(dir->i_sb);
233 return ERR_PTR(-ENOMEM);
235 if (!f2fs_alloc_nid(sbi, &ino)) {
242 inode_init_owner(idmap, inode, dir, mode);
246 inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode);
247 F2FS_I(inode)->i_crtime = inode->i_mtime;
248 inode->i_generation = get_random_u32();
250 if (S_ISDIR(inode->i_mode))
251 F2FS_I(inode)->i_current_depth = 1;
253 err = insert_inode_locked(inode);
259 if (f2fs_sb_has_project_quota(sbi) &&
260 (F2FS_I(dir)->i_flags & F2FS_PROJINHERIT_FL))
261 F2FS_I(inode)->i_projid = F2FS_I(dir)->i_projid;
263 F2FS_I(inode)->i_projid = make_kprojid(&init_user_ns,
266 err = fscrypt_prepare_new_inode(dir, inode, &encrypt);
270 err = f2fs_dquot_initialize(inode);
274 set_inode_flag(inode, FI_NEW_INODE);
277 f2fs_set_encrypted_inode(inode);
279 if (f2fs_sb_has_extra_attr(sbi)) {
280 set_inode_flag(inode, FI_EXTRA_ATTR);
281 F2FS_I(inode)->i_extra_isize = F2FS_TOTAL_EXTRA_ATTR_SIZE;
284 if (test_opt(sbi, INLINE_XATTR))
285 set_inode_flag(inode, FI_INLINE_XATTR);
287 if (f2fs_may_inline_dentry(inode))
288 set_inode_flag(inode, FI_INLINE_DENTRY);
290 if (f2fs_sb_has_flexible_inline_xattr(sbi)) {
291 f2fs_bug_on(sbi, !f2fs_has_extra_attr(inode));
292 if (f2fs_has_inline_xattr(inode))
293 xattr_size = F2FS_OPTION(sbi).inline_xattr_size;
294 /* Otherwise, will be 0 */
295 } else if (f2fs_has_inline_xattr(inode) ||
296 f2fs_has_inline_dentry(inode)) {
297 xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
299 F2FS_I(inode)->i_inline_xattr_size = xattr_size;
301 F2FS_I(inode)->i_flags =
302 f2fs_mask_flags(mode, F2FS_I(dir)->i_flags & F2FS_FL_INHERITED);
304 if (S_ISDIR(inode->i_mode))
305 F2FS_I(inode)->i_flags |= F2FS_INDEX_FL;
307 if (F2FS_I(inode)->i_flags & F2FS_PROJINHERIT_FL)
308 set_inode_flag(inode, FI_PROJ_INHERIT);
310 /* Check compression first. */
311 set_compress_new_inode(sbi, dir, inode, name);
313 /* Should enable inline_data after compression set */
314 if (test_opt(sbi, INLINE_DATA) && f2fs_may_inline_data(inode))
315 set_inode_flag(inode, FI_INLINE_DATA);
317 if (name && !test_opt(sbi, DISABLE_EXT_IDENTIFY))
318 set_file_temperature(sbi, inode, name);
320 stat_inc_inline_xattr(inode);
321 stat_inc_inline_inode(inode);
322 stat_inc_inline_dir(inode);
324 f2fs_set_inode_flags(inode);
326 f2fs_init_extent_tree(inode);
328 trace_f2fs_new_inode(inode, 0);
332 trace_f2fs_new_inode(inode, err);
333 make_bad_inode(inode);
335 set_inode_flag(inode, FI_FREE_NID);
339 trace_f2fs_new_inode(inode, err);
341 inode->i_flags |= S_NOQUOTA;
343 set_inode_flag(inode, FI_FREE_NID);
345 unlock_new_inode(inode);
350 static int f2fs_create(struct mnt_idmap *idmap, struct inode *dir,
351 struct dentry *dentry, umode_t mode, bool excl)
353 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
358 if (unlikely(f2fs_cp_error(sbi)))
360 if (!f2fs_is_checkpoint_ready(sbi))
363 err = f2fs_dquot_initialize(dir);
367 inode = f2fs_new_inode(idmap, dir, mode, dentry->d_name.name);
369 return PTR_ERR(inode);
371 inode->i_op = &f2fs_file_inode_operations;
372 inode->i_fop = &f2fs_file_operations;
373 inode->i_mapping->a_ops = &f2fs_dblock_aops;
377 err = f2fs_add_link(dentry, inode);
382 f2fs_alloc_nid_done(sbi, ino);
384 d_instantiate_new(dentry, inode);
387 f2fs_sync_fs(sbi->sb, 1);
389 f2fs_balance_fs(sbi, true);
392 f2fs_handle_failed_inode(inode);
396 static int f2fs_link(struct dentry *old_dentry, struct inode *dir,
397 struct dentry *dentry)
399 struct inode *inode = d_inode(old_dentry);
400 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
403 if (unlikely(f2fs_cp_error(sbi)))
405 if (!f2fs_is_checkpoint_ready(sbi))
408 err = fscrypt_prepare_link(old_dentry, dir, dentry);
412 if (is_inode_flag_set(dir, FI_PROJ_INHERIT) &&
413 (!projid_eq(F2FS_I(dir)->i_projid,
414 F2FS_I(old_dentry->d_inode)->i_projid)))
417 err = f2fs_dquot_initialize(dir);
421 f2fs_balance_fs(sbi, true);
423 inode_set_ctime_current(inode);
426 set_inode_flag(inode, FI_INC_LINK);
428 err = f2fs_add_link(dentry, inode);
433 d_instantiate(dentry, inode);
436 f2fs_sync_fs(sbi->sb, 1);
439 clear_inode_flag(inode, FI_INC_LINK);
445 struct dentry *f2fs_get_parent(struct dentry *child)
448 unsigned long ino = f2fs_inode_by_name(d_inode(child), &dotdot_name, &page);
452 return ERR_CAST(page);
453 return ERR_PTR(-ENOENT);
455 return d_obtain_alias(f2fs_iget(child->d_sb, ino));
458 static int __recover_dot_dentries(struct inode *dir, nid_t pino)
460 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
461 struct qstr dot = QSTR_INIT(".", 1);
462 struct qstr dotdot = QSTR_INIT("..", 2);
463 struct f2fs_dir_entry *de;
467 if (f2fs_readonly(sbi->sb)) {
468 f2fs_info(sbi, "skip recovering inline_dots inode (ino:%lu, pino:%u) in readonly mountpoint",
473 if (!S_ISDIR(dir->i_mode)) {
474 f2fs_err(sbi, "inconsistent inode status, skip recovering inline_dots inode (ino:%lu, i_mode:%u, pino:%u)",
475 dir->i_ino, dir->i_mode, pino);
476 set_sbi_flag(sbi, SBI_NEED_FSCK);
480 err = f2fs_dquot_initialize(dir);
484 f2fs_balance_fs(sbi, true);
488 de = f2fs_find_entry(dir, &dot, &page);
490 f2fs_put_page(page, 0);
491 } else if (IS_ERR(page)) {
495 err = f2fs_do_add_link(dir, &dot, NULL, dir->i_ino, S_IFDIR);
500 de = f2fs_find_entry(dir, &dotdot, &page);
502 f2fs_put_page(page, 0);
503 else if (IS_ERR(page))
506 err = f2fs_do_add_link(dir, &dotdot, NULL, pino, S_IFDIR);
509 clear_inode_flag(dir, FI_INLINE_DOTS);
515 static struct dentry *f2fs_lookup(struct inode *dir, struct dentry *dentry,
518 struct inode *inode = NULL;
519 struct f2fs_dir_entry *de;
524 unsigned int root_ino = F2FS_ROOT_INO(F2FS_I_SB(dir));
525 struct f2fs_filename fname;
527 trace_f2fs_lookup_start(dir, dentry, flags);
529 if (dentry->d_name.len > F2FS_NAME_LEN) {
534 err = f2fs_prepare_lookup(dir, dentry, &fname);
535 generic_set_encrypted_ci_d_ops(dentry);
540 de = __f2fs_find_entry(dir, &fname, &page);
541 f2fs_free_filename(&fname);
552 ino = le32_to_cpu(de->ino);
553 f2fs_put_page(page, 0);
555 inode = f2fs_iget(dir->i_sb, ino);
557 err = PTR_ERR(inode);
561 if ((dir->i_ino == root_ino) && f2fs_has_inline_dots(dir)) {
562 err = __recover_dot_dentries(dir, root_ino);
567 if (f2fs_has_inline_dots(inode)) {
568 err = __recover_dot_dentries(inode, dir->i_ino);
572 if (IS_ENCRYPTED(dir) &&
573 (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode)) &&
574 !fscrypt_has_permitted_context(dir, inode)) {
575 f2fs_warn(F2FS_I_SB(inode), "Inconsistent encryption contexts: %lu/%lu",
576 dir->i_ino, inode->i_ino);
581 #if IS_ENABLED(CONFIG_UNICODE)
582 if (!inode && IS_CASEFOLDED(dir)) {
583 /* Eventually we want to call d_add_ci(dentry, NULL)
584 * for negative dentries in the encoding case as
585 * well. For now, prevent the negative dentry
588 trace_f2fs_lookup_end(dir, dentry, ino, err);
592 new = d_splice_alias(inode, dentry);
593 trace_f2fs_lookup_end(dir, !IS_ERR_OR_NULL(new) ? new : dentry,
594 ino, IS_ERR(new) ? PTR_ERR(new) : err);
599 trace_f2fs_lookup_end(dir, dentry, ino, err);
603 static int f2fs_unlink(struct inode *dir, struct dentry *dentry)
605 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
606 struct inode *inode = d_inode(dentry);
607 struct f2fs_dir_entry *de;
611 trace_f2fs_unlink_enter(dir, dentry);
613 if (unlikely(f2fs_cp_error(sbi))) {
618 err = f2fs_dquot_initialize(dir);
621 err = f2fs_dquot_initialize(inode);
625 de = f2fs_find_entry(dir, &dentry->d_name, &page);
632 f2fs_balance_fs(sbi, true);
635 err = f2fs_acquire_orphan_inode(sbi);
638 f2fs_put_page(page, 0);
641 f2fs_delete_entry(de, page, dir, inode);
644 #if IS_ENABLED(CONFIG_UNICODE)
645 /* VFS negative dentries are incompatible with Encoding and
646 * Case-insensitiveness. Eventually we'll want avoid
647 * invalidating the dentries here, alongside with returning the
648 * negative dentries at f2fs_lookup(), when it is better
649 * supported by the VFS for the CI case.
651 if (IS_CASEFOLDED(dir))
652 d_invalidate(dentry);
655 f2fs_sync_fs(sbi->sb, 1);
657 trace_f2fs_unlink_exit(inode, err);
661 static const char *f2fs_get_link(struct dentry *dentry,
663 struct delayed_call *done)
665 const char *link = page_get_link(dentry, inode, done);
667 if (!IS_ERR(link) && !*link) {
668 /* this is broken symlink case */
669 do_delayed_call(done);
670 clear_delayed_call(done);
671 link = ERR_PTR(-ENOENT);
676 static int f2fs_symlink(struct mnt_idmap *idmap, struct inode *dir,
677 struct dentry *dentry, const char *symname)
679 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
681 size_t len = strlen(symname);
682 struct fscrypt_str disk_link;
685 if (unlikely(f2fs_cp_error(sbi)))
687 if (!f2fs_is_checkpoint_ready(sbi))
690 err = fscrypt_prepare_symlink(dir, symname, len, dir->i_sb->s_blocksize,
695 err = f2fs_dquot_initialize(dir);
699 inode = f2fs_new_inode(idmap, dir, S_IFLNK | S_IRWXUGO, NULL);
701 return PTR_ERR(inode);
703 if (IS_ENCRYPTED(inode))
704 inode->i_op = &f2fs_encrypted_symlink_inode_operations;
706 inode->i_op = &f2fs_symlink_inode_operations;
707 inode_nohighmem(inode);
708 inode->i_mapping->a_ops = &f2fs_dblock_aops;
711 err = f2fs_add_link(dentry, inode);
713 goto out_f2fs_handle_failed_inode;
715 f2fs_alloc_nid_done(sbi, inode->i_ino);
717 err = fscrypt_encrypt_symlink(inode, symname, len, &disk_link);
721 err = page_symlink(inode, disk_link.name, disk_link.len);
724 d_instantiate_new(dentry, inode);
727 * Let's flush symlink data in order to avoid broken symlink as much as
728 * possible. Nevertheless, fsyncing is the best way, but there is no
729 * way to get a file descriptor in order to flush that.
731 * Note that, it needs to do dir->fsync to make this recoverable.
732 * If the symlink path is stored into inline_data, there is no
733 * performance regression.
736 filemap_write_and_wait_range(inode->i_mapping, 0,
740 f2fs_sync_fs(sbi->sb, 1);
742 f2fs_unlink(dir, dentry);
745 f2fs_balance_fs(sbi, true);
746 goto out_free_encrypted_link;
748 out_f2fs_handle_failed_inode:
749 f2fs_handle_failed_inode(inode);
750 out_free_encrypted_link:
751 if (disk_link.name != (unsigned char *)symname)
752 kfree(disk_link.name);
756 static int f2fs_mkdir(struct mnt_idmap *idmap, struct inode *dir,
757 struct dentry *dentry, umode_t mode)
759 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
763 if (unlikely(f2fs_cp_error(sbi)))
766 err = f2fs_dquot_initialize(dir);
770 inode = f2fs_new_inode(idmap, dir, S_IFDIR | mode, NULL);
772 return PTR_ERR(inode);
774 inode->i_op = &f2fs_dir_inode_operations;
775 inode->i_fop = &f2fs_dir_operations;
776 inode->i_mapping->a_ops = &f2fs_dblock_aops;
777 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
779 set_inode_flag(inode, FI_INC_LINK);
781 err = f2fs_add_link(dentry, inode);
786 f2fs_alloc_nid_done(sbi, inode->i_ino);
788 d_instantiate_new(dentry, inode);
791 f2fs_sync_fs(sbi->sb, 1);
793 f2fs_balance_fs(sbi, true);
797 clear_inode_flag(inode, FI_INC_LINK);
798 f2fs_handle_failed_inode(inode);
802 static int f2fs_rmdir(struct inode *dir, struct dentry *dentry)
804 struct inode *inode = d_inode(dentry);
806 if (f2fs_empty_dir(inode))
807 return f2fs_unlink(dir, dentry);
811 static int f2fs_mknod(struct mnt_idmap *idmap, struct inode *dir,
812 struct dentry *dentry, umode_t mode, dev_t rdev)
814 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
818 if (unlikely(f2fs_cp_error(sbi)))
820 if (!f2fs_is_checkpoint_ready(sbi))
823 err = f2fs_dquot_initialize(dir);
827 inode = f2fs_new_inode(idmap, dir, mode, NULL);
829 return PTR_ERR(inode);
831 init_special_inode(inode, inode->i_mode, rdev);
832 inode->i_op = &f2fs_special_inode_operations;
835 err = f2fs_add_link(dentry, inode);
840 f2fs_alloc_nid_done(sbi, inode->i_ino);
842 d_instantiate_new(dentry, inode);
845 f2fs_sync_fs(sbi->sb, 1);
847 f2fs_balance_fs(sbi, true);
850 f2fs_handle_failed_inode(inode);
854 static int __f2fs_tmpfile(struct mnt_idmap *idmap, struct inode *dir,
855 struct file *file, umode_t mode, bool is_whiteout,
856 struct inode **new_inode)
858 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
862 err = f2fs_dquot_initialize(dir);
866 inode = f2fs_new_inode(idmap, dir, mode, NULL);
868 return PTR_ERR(inode);
871 init_special_inode(inode, inode->i_mode, WHITEOUT_DEV);
872 inode->i_op = &f2fs_special_inode_operations;
874 inode->i_op = &f2fs_file_inode_operations;
875 inode->i_fop = &f2fs_file_operations;
876 inode->i_mapping->a_ops = &f2fs_dblock_aops;
880 err = f2fs_acquire_orphan_inode(sbi);
884 err = f2fs_do_tmpfile(inode, dir);
889 * add this non-linked tmpfile to orphan list, in this way we could
890 * remove all unused data of tmpfile after abnormal power-off.
892 f2fs_add_orphan_inode(inode);
893 f2fs_alloc_nid_done(sbi, inode->i_ino);
896 f2fs_i_links_write(inode, false);
898 spin_lock(&inode->i_lock);
899 inode->i_state |= I_LINKABLE;
900 spin_unlock(&inode->i_lock);
903 d_tmpfile(file, inode);
905 f2fs_i_links_write(inode, false);
907 /* link_count was changed by d_tmpfile as well. */
909 unlock_new_inode(inode);
914 f2fs_balance_fs(sbi, true);
918 f2fs_release_orphan_inode(sbi);
920 f2fs_handle_failed_inode(inode);
924 static int f2fs_tmpfile(struct mnt_idmap *idmap, struct inode *dir,
925 struct file *file, umode_t mode)
927 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
930 if (unlikely(f2fs_cp_error(sbi)))
932 if (!f2fs_is_checkpoint_ready(sbi))
935 err = __f2fs_tmpfile(idmap, dir, file, mode, false, NULL);
937 return finish_open_simple(file, err);
940 static int f2fs_create_whiteout(struct mnt_idmap *idmap,
941 struct inode *dir, struct inode **whiteout)
943 return __f2fs_tmpfile(idmap, dir, NULL,
944 S_IFCHR | WHITEOUT_MODE, true, whiteout);
947 int f2fs_get_tmpfile(struct mnt_idmap *idmap, struct inode *dir,
948 struct inode **new_inode)
950 return __f2fs_tmpfile(idmap, dir, NULL, S_IFREG, false, new_inode);
953 static int f2fs_rename(struct mnt_idmap *idmap, struct inode *old_dir,
954 struct dentry *old_dentry, struct inode *new_dir,
955 struct dentry *new_dentry, unsigned int flags)
957 struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir);
958 struct inode *old_inode = d_inode(old_dentry);
959 struct inode *new_inode = d_inode(new_dentry);
960 struct inode *whiteout = NULL;
961 struct page *old_dir_page = NULL;
962 struct page *old_page, *new_page = NULL;
963 struct f2fs_dir_entry *old_dir_entry = NULL;
964 struct f2fs_dir_entry *old_entry;
965 struct f2fs_dir_entry *new_entry;
968 if (unlikely(f2fs_cp_error(sbi)))
970 if (!f2fs_is_checkpoint_ready(sbi))
973 if (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
974 (!projid_eq(F2FS_I(new_dir)->i_projid,
975 F2FS_I(old_dentry->d_inode)->i_projid)))
979 * If new_inode is null, the below renaming flow will
980 * add a link in old_dir which can convert inline_dir.
981 * After then, if we failed to get the entry due to other
982 * reasons like ENOMEM, we had to remove the new entry.
983 * Instead of adding such the error handling routine, let's
984 * simply convert first here.
986 if (old_dir == new_dir && !new_inode) {
987 err = f2fs_try_convert_inline_dir(old_dir, new_dentry);
992 if (flags & RENAME_WHITEOUT) {
993 err = f2fs_create_whiteout(idmap, old_dir, &whiteout);
998 err = f2fs_dquot_initialize(old_dir);
1002 err = f2fs_dquot_initialize(new_dir);
1007 err = f2fs_dquot_initialize(new_inode);
1013 old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page);
1015 if (IS_ERR(old_page))
1016 err = PTR_ERR(old_page);
1020 if (S_ISDIR(old_inode->i_mode)) {
1021 old_dir_entry = f2fs_parent_dir(old_inode, &old_dir_page);
1022 if (!old_dir_entry) {
1023 if (IS_ERR(old_dir_page))
1024 err = PTR_ERR(old_dir_page);
1032 if (old_dir_entry && !f2fs_empty_dir(new_inode))
1036 new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name,
1039 if (IS_ERR(new_page))
1040 err = PTR_ERR(new_page);
1044 f2fs_balance_fs(sbi, true);
1048 err = f2fs_acquire_orphan_inode(sbi);
1052 f2fs_set_link(new_dir, new_entry, new_page, old_inode);
1055 inode_set_ctime_current(new_inode);
1056 f2fs_down_write(&F2FS_I(new_inode)->i_sem);
1058 f2fs_i_links_write(new_inode, false);
1059 f2fs_i_links_write(new_inode, false);
1060 f2fs_up_write(&F2FS_I(new_inode)->i_sem);
1062 if (!new_inode->i_nlink)
1063 f2fs_add_orphan_inode(new_inode);
1065 f2fs_release_orphan_inode(sbi);
1067 f2fs_balance_fs(sbi, true);
1071 err = f2fs_add_link(new_dentry, old_inode);
1073 f2fs_unlock_op(sbi);
1078 f2fs_i_links_write(new_dir, true);
1081 f2fs_down_write(&F2FS_I(old_inode)->i_sem);
1082 if (!old_dir_entry || whiteout)
1083 file_lost_pino(old_inode);
1085 /* adjust dir's i_pino to pass fsck check */
1086 f2fs_i_pino_write(old_inode, new_dir->i_ino);
1087 f2fs_up_write(&F2FS_I(old_inode)->i_sem);
1089 inode_set_ctime_current(old_inode);
1090 f2fs_mark_inode_dirty_sync(old_inode, false);
1092 f2fs_delete_entry(old_entry, old_page, old_dir, NULL);
1096 set_inode_flag(whiteout, FI_INC_LINK);
1097 err = f2fs_add_link(old_dentry, whiteout);
1101 spin_lock(&whiteout->i_lock);
1102 whiteout->i_state &= ~I_LINKABLE;
1103 spin_unlock(&whiteout->i_lock);
1108 if (old_dir_entry) {
1109 if (old_dir != new_dir && !whiteout)
1110 f2fs_set_link(old_inode, old_dir_entry,
1111 old_dir_page, new_dir);
1113 f2fs_put_page(old_dir_page, 0);
1114 f2fs_i_links_write(old_dir, false);
1116 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) {
1117 f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO);
1118 if (S_ISDIR(old_inode->i_mode))
1119 f2fs_add_ino_entry(sbi, old_inode->i_ino,
1123 f2fs_unlock_op(sbi);
1125 if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir))
1126 f2fs_sync_fs(sbi->sb, 1);
1128 f2fs_update_time(sbi, REQ_TIME);
1132 f2fs_unlock_op(sbi);
1133 f2fs_put_page(new_page, 0);
1136 f2fs_put_page(old_dir_page, 0);
1138 f2fs_put_page(old_page, 0);
1144 static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry,
1145 struct inode *new_dir, struct dentry *new_dentry)
1147 struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir);
1148 struct inode *old_inode = d_inode(old_dentry);
1149 struct inode *new_inode = d_inode(new_dentry);
1150 struct page *old_dir_page, *new_dir_page;
1151 struct page *old_page, *new_page;
1152 struct f2fs_dir_entry *old_dir_entry = NULL, *new_dir_entry = NULL;
1153 struct f2fs_dir_entry *old_entry, *new_entry;
1154 int old_nlink = 0, new_nlink = 0;
1157 if (unlikely(f2fs_cp_error(sbi)))
1159 if (!f2fs_is_checkpoint_ready(sbi))
1162 if ((is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
1163 !projid_eq(F2FS_I(new_dir)->i_projid,
1164 F2FS_I(old_dentry->d_inode)->i_projid)) ||
1165 (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
1166 !projid_eq(F2FS_I(old_dir)->i_projid,
1167 F2FS_I(new_dentry->d_inode)->i_projid)))
1170 err = f2fs_dquot_initialize(old_dir);
1174 err = f2fs_dquot_initialize(new_dir);
1179 old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page);
1181 if (IS_ERR(old_page))
1182 err = PTR_ERR(old_page);
1186 new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name, &new_page);
1188 if (IS_ERR(new_page))
1189 err = PTR_ERR(new_page);
1193 /* prepare for updating ".." directory entry info later */
1194 if (old_dir != new_dir) {
1195 if (S_ISDIR(old_inode->i_mode)) {
1196 old_dir_entry = f2fs_parent_dir(old_inode,
1198 if (!old_dir_entry) {
1199 if (IS_ERR(old_dir_page))
1200 err = PTR_ERR(old_dir_page);
1205 if (S_ISDIR(new_inode->i_mode)) {
1206 new_dir_entry = f2fs_parent_dir(new_inode,
1208 if (!new_dir_entry) {
1209 if (IS_ERR(new_dir_page))
1210 err = PTR_ERR(new_dir_page);
1217 * If cross rename between file and directory those are not
1218 * in the same directory, we will inc nlink of file's parent
1219 * later, so we should check upper boundary of its nlink.
1221 if ((!old_dir_entry || !new_dir_entry) &&
1222 old_dir_entry != new_dir_entry) {
1223 old_nlink = old_dir_entry ? -1 : 1;
1224 new_nlink = -old_nlink;
1226 if ((old_nlink > 0 && old_dir->i_nlink >= F2FS_LINK_MAX) ||
1227 (new_nlink > 0 && new_dir->i_nlink >= F2FS_LINK_MAX))
1231 f2fs_balance_fs(sbi, true);
1235 /* update ".." directory entry info of old dentry */
1237 f2fs_set_link(old_inode, old_dir_entry, old_dir_page, new_dir);
1239 /* update ".." directory entry info of new dentry */
1241 f2fs_set_link(new_inode, new_dir_entry, new_dir_page, old_dir);
1243 /* update directory entry info of old dir inode */
1244 f2fs_set_link(old_dir, old_entry, old_page, new_inode);
1246 f2fs_down_write(&F2FS_I(old_inode)->i_sem);
1248 file_lost_pino(old_inode);
1250 /* adjust dir's i_pino to pass fsck check */
1251 f2fs_i_pino_write(old_inode, new_dir->i_ino);
1252 f2fs_up_write(&F2FS_I(old_inode)->i_sem);
1254 inode_set_ctime_current(old_dir);
1256 f2fs_down_write(&F2FS_I(old_dir)->i_sem);
1257 f2fs_i_links_write(old_dir, old_nlink > 0);
1258 f2fs_up_write(&F2FS_I(old_dir)->i_sem);
1260 f2fs_mark_inode_dirty_sync(old_dir, false);
1262 /* update directory entry info of new dir inode */
1263 f2fs_set_link(new_dir, new_entry, new_page, old_inode);
1265 f2fs_down_write(&F2FS_I(new_inode)->i_sem);
1267 file_lost_pino(new_inode);
1269 /* adjust dir's i_pino to pass fsck check */
1270 f2fs_i_pino_write(new_inode, old_dir->i_ino);
1271 f2fs_up_write(&F2FS_I(new_inode)->i_sem);
1273 inode_set_ctime_current(new_dir);
1275 f2fs_down_write(&F2FS_I(new_dir)->i_sem);
1276 f2fs_i_links_write(new_dir, new_nlink > 0);
1277 f2fs_up_write(&F2FS_I(new_dir)->i_sem);
1279 f2fs_mark_inode_dirty_sync(new_dir, false);
1281 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) {
1282 f2fs_add_ino_entry(sbi, old_dir->i_ino, TRANS_DIR_INO);
1283 f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO);
1286 f2fs_unlock_op(sbi);
1288 if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir))
1289 f2fs_sync_fs(sbi->sb, 1);
1291 f2fs_update_time(sbi, REQ_TIME);
1294 if (new_dir_entry) {
1295 f2fs_put_page(new_dir_page, 0);
1298 if (old_dir_entry) {
1299 f2fs_put_page(old_dir_page, 0);
1302 f2fs_put_page(new_page, 0);
1304 f2fs_put_page(old_page, 0);
1309 static int f2fs_rename2(struct mnt_idmap *idmap,
1310 struct inode *old_dir, struct dentry *old_dentry,
1311 struct inode *new_dir, struct dentry *new_dentry,
1316 if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE | RENAME_WHITEOUT))
1319 err = fscrypt_prepare_rename(old_dir, old_dentry, new_dir, new_dentry,
1324 if (flags & RENAME_EXCHANGE) {
1325 return f2fs_cross_rename(old_dir, old_dentry,
1326 new_dir, new_dentry);
1329 * VFS has already handled the new dentry existence case,
1330 * here, we just deal with "RENAME_NOREPLACE" as regular rename.
1332 return f2fs_rename(idmap, old_dir, old_dentry,
1333 new_dir, new_dentry, flags);
1336 static const char *f2fs_encrypted_get_link(struct dentry *dentry,
1337 struct inode *inode,
1338 struct delayed_call *done)
1344 return ERR_PTR(-ECHILD);
1346 page = read_mapping_page(inode->i_mapping, 0, NULL);
1348 return ERR_CAST(page);
1350 target = fscrypt_get_symlink(inode, page_address(page),
1351 inode->i_sb->s_blocksize, done);
1356 static int f2fs_encrypted_symlink_getattr(struct mnt_idmap *idmap,
1357 const struct path *path,
1358 struct kstat *stat, u32 request_mask,
1359 unsigned int query_flags)
1361 f2fs_getattr(idmap, path, stat, request_mask, query_flags);
1363 return fscrypt_symlink_getattr(path, stat);
1366 const struct inode_operations f2fs_encrypted_symlink_inode_operations = {
1367 .get_link = f2fs_encrypted_get_link,
1368 .getattr = f2fs_encrypted_symlink_getattr,
1369 .setattr = f2fs_setattr,
1370 .listxattr = f2fs_listxattr,
1373 const struct inode_operations f2fs_dir_inode_operations = {
1374 .create = f2fs_create,
1375 .lookup = f2fs_lookup,
1377 .unlink = f2fs_unlink,
1378 .symlink = f2fs_symlink,
1379 .mkdir = f2fs_mkdir,
1380 .rmdir = f2fs_rmdir,
1381 .mknod = f2fs_mknod,
1382 .rename = f2fs_rename2,
1383 .tmpfile = f2fs_tmpfile,
1384 .getattr = f2fs_getattr,
1385 .setattr = f2fs_setattr,
1386 .get_inode_acl = f2fs_get_acl,
1387 .set_acl = f2fs_set_acl,
1388 .listxattr = f2fs_listxattr,
1389 .fiemap = f2fs_fiemap,
1390 .fileattr_get = f2fs_fileattr_get,
1391 .fileattr_set = f2fs_fileattr_set,
1394 const struct inode_operations f2fs_symlink_inode_operations = {
1395 .get_link = f2fs_get_link,
1396 .getattr = f2fs_getattr,
1397 .setattr = f2fs_setattr,
1398 .listxattr = f2fs_listxattr,
1401 const struct inode_operations f2fs_special_inode_operations = {
1402 .getattr = f2fs_getattr,
1403 .setattr = f2fs_setattr,
1404 .get_inode_acl = f2fs_get_acl,
1405 .set_acl = f2fs_set_acl,
1406 .listxattr = f2fs_listxattr,