4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
12 #include <linux/f2fs_fs.h>
13 #include <linux/pagemap.h>
14 #include <linux/sched.h>
15 #include <linux/ctype.h>
16 #include <linux/dcache.h>
17 #include <linux/namei.h>
18 #include <linux/quotaops.h>
24 #include <trace/events/f2fs.h>
26 static struct inode *f2fs_new_inode(struct inode *dir, umode_t mode)
28 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
31 bool nid_free = false;
35 inode = new_inode(dir->i_sb);
37 return ERR_PTR(-ENOMEM);
40 if (!f2fs_alloc_nid(sbi, &ino)) {
49 inode_init_owner(inode, dir, mode);
53 inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
54 F2FS_I(inode)->i_crtime = inode->i_mtime;
55 inode->i_generation = sbi->s_next_generation++;
57 if (S_ISDIR(inode->i_mode))
58 F2FS_I(inode)->i_current_depth = 1;
60 err = insert_inode_locked(inode);
66 if (f2fs_sb_has_project_quota(sbi->sb) &&
67 (F2FS_I(dir)->i_flags & F2FS_PROJINHERIT_FL))
68 F2FS_I(inode)->i_projid = F2FS_I(dir)->i_projid;
70 F2FS_I(inode)->i_projid = make_kprojid(&init_user_ns,
73 err = dquot_initialize(inode);
77 err = dquot_alloc_inode(inode);
81 set_inode_flag(inode, FI_NEW_INODE);
83 /* If the directory encrypted, then we should encrypt the inode. */
84 if ((f2fs_encrypted_inode(dir) || DUMMY_ENCRYPTION_ENABLED(sbi)) &&
85 f2fs_may_encrypt(inode))
86 f2fs_set_encrypted_inode(inode);
88 if (f2fs_sb_has_extra_attr(sbi->sb)) {
89 set_inode_flag(inode, FI_EXTRA_ATTR);
90 F2FS_I(inode)->i_extra_isize = F2FS_TOTAL_EXTRA_ATTR_SIZE;
93 if (test_opt(sbi, INLINE_XATTR))
94 set_inode_flag(inode, FI_INLINE_XATTR);
96 if (test_opt(sbi, INLINE_DATA) && f2fs_may_inline_data(inode))
97 set_inode_flag(inode, FI_INLINE_DATA);
98 if (f2fs_may_inline_dentry(inode))
99 set_inode_flag(inode, FI_INLINE_DENTRY);
101 if (f2fs_sb_has_flexible_inline_xattr(sbi->sb)) {
102 f2fs_bug_on(sbi, !f2fs_has_extra_attr(inode));
103 if (f2fs_has_inline_xattr(inode))
104 xattr_size = F2FS_OPTION(sbi).inline_xattr_size;
105 /* Otherwise, will be 0 */
106 } else if (f2fs_has_inline_xattr(inode) ||
107 f2fs_has_inline_dentry(inode)) {
108 xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
110 F2FS_I(inode)->i_inline_xattr_size = xattr_size;
112 f2fs_init_extent_tree(inode, NULL);
114 stat_inc_inline_xattr(inode);
115 stat_inc_inline_inode(inode);
116 stat_inc_inline_dir(inode);
118 F2FS_I(inode)->i_flags =
119 f2fs_mask_flags(mode, F2FS_I(dir)->i_flags & F2FS_FL_INHERITED);
121 if (S_ISDIR(inode->i_mode))
122 F2FS_I(inode)->i_flags |= F2FS_INDEX_FL;
124 if (F2FS_I(inode)->i_flags & F2FS_PROJINHERIT_FL)
125 set_inode_flag(inode, FI_PROJ_INHERIT);
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 int is_extension_exist(const unsigned char *s, const char *sub)
153 size_t slen = strlen(s);
154 size_t sublen = strlen(sub);
158 * filename format of multimedia file should be defined as:
159 * "filename + '.' + extension + (optional: '.' + temp extension)".
161 if (slen < sublen + 2)
164 for (i = 1; i < slen - sublen; i++) {
167 if (!strncasecmp(s + i + 1, sub, sublen))
175 * Set multimedia files as cold files for hot/cold data separation
177 static inline void set_file_temperature(struct f2fs_sb_info *sbi, struct inode *inode,
178 const unsigned char *name)
180 __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
181 int i, cold_count, hot_count;
183 down_read(&sbi->sb_lock);
185 cold_count = le32_to_cpu(sbi->raw_super->extension_count);
186 hot_count = sbi->raw_super->hot_ext_count;
188 for (i = 0; i < cold_count + hot_count; i++) {
189 if (!is_extension_exist(name, extlist[i]))
192 file_set_cold(inode);
198 up_read(&sbi->sb_lock);
201 int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
204 __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
205 int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
206 int hot_count = sbi->raw_super->hot_ext_count;
207 int total_count = cold_count + hot_count;
212 if (total_count == F2FS_MAX_EXTENSION)
215 if (!hot && !cold_count)
217 if (hot && !hot_count)
229 for (i = start; i < count; i++) {
230 if (strcmp(name, extlist[i]))
236 memcpy(extlist[i], extlist[i + 1],
237 F2FS_EXTENSION_LEN * (total_count - i - 1));
238 memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN);
240 sbi->raw_super->hot_ext_count = hot_count - 1;
242 sbi->raw_super->extension_count =
243 cpu_to_le32(cold_count - 1);
251 memcpy(extlist[count], name, strlen(name));
252 sbi->raw_super->hot_ext_count = hot_count + 1;
254 char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN];
256 memcpy(buf, &extlist[cold_count],
257 F2FS_EXTENSION_LEN * hot_count);
258 memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN);
259 memcpy(extlist[cold_count], name, strlen(name));
260 memcpy(&extlist[cold_count + 1], buf,
261 F2FS_EXTENSION_LEN * hot_count);
262 sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1);
267 static int f2fs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
270 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
275 if (unlikely(f2fs_cp_error(sbi)))
278 err = dquot_initialize(dir);
282 inode = f2fs_new_inode(dir, mode);
284 return PTR_ERR(inode);
286 if (!test_opt(sbi, DISABLE_EXT_IDENTIFY))
287 set_file_temperature(sbi, inode, dentry->d_name.name);
289 inode->i_op = &f2fs_file_inode_operations;
290 inode->i_fop = &f2fs_file_operations;
291 inode->i_mapping->a_ops = &f2fs_dblock_aops;
295 err = f2fs_add_link(dentry, inode);
300 f2fs_alloc_nid_done(sbi, ino);
302 d_instantiate_new(dentry, inode);
305 f2fs_sync_fs(sbi->sb, 1);
307 f2fs_balance_fs(sbi, true);
310 f2fs_handle_failed_inode(inode);
314 static int f2fs_link(struct dentry *old_dentry, struct inode *dir,
315 struct dentry *dentry)
317 struct inode *inode = d_inode(old_dentry);
318 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
321 if (unlikely(f2fs_cp_error(sbi)))
324 err = fscrypt_prepare_link(old_dentry, dir, dentry);
328 if (is_inode_flag_set(dir, FI_PROJ_INHERIT) &&
329 (!projid_eq(F2FS_I(dir)->i_projid,
330 F2FS_I(old_dentry->d_inode)->i_projid)))
333 err = dquot_initialize(dir);
337 f2fs_balance_fs(sbi, true);
339 inode->i_ctime = current_time(inode);
342 set_inode_flag(inode, FI_INC_LINK);
344 err = f2fs_add_link(dentry, inode);
349 d_instantiate(dentry, inode);
352 f2fs_sync_fs(sbi->sb, 1);
355 clear_inode_flag(inode, FI_INC_LINK);
361 struct dentry *f2fs_get_parent(struct dentry *child)
363 struct qstr dotdot = QSTR_INIT("..", 2);
365 unsigned long ino = f2fs_inode_by_name(d_inode(child), &dotdot, &page);
368 return ERR_CAST(page);
369 return ERR_PTR(-ENOENT);
371 return d_obtain_alias(f2fs_iget(child->d_sb, ino));
374 static int __recover_dot_dentries(struct inode *dir, nid_t pino)
376 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
377 struct qstr dot = QSTR_INIT(".", 1);
378 struct qstr dotdot = QSTR_INIT("..", 2);
379 struct f2fs_dir_entry *de;
383 if (f2fs_readonly(sbi->sb)) {
384 f2fs_msg(sbi->sb, KERN_INFO,
385 "skip recovering inline_dots inode (ino:%lu, pino:%u) "
386 "in readonly mountpoint", dir->i_ino, pino);
390 err = dquot_initialize(dir);
394 f2fs_balance_fs(sbi, true);
398 de = f2fs_find_entry(dir, &dot, &page);
400 f2fs_put_page(page, 0);
401 } else if (IS_ERR(page)) {
405 err = f2fs_do_add_link(dir, &dot, NULL, dir->i_ino, S_IFDIR);
410 de = f2fs_find_entry(dir, &dotdot, &page);
412 f2fs_put_page(page, 0);
413 else if (IS_ERR(page))
416 err = f2fs_do_add_link(dir, &dotdot, NULL, pino, S_IFDIR);
419 clear_inode_flag(dir, FI_INLINE_DOTS);
425 static struct dentry *f2fs_lookup(struct inode *dir, struct dentry *dentry,
428 struct inode *inode = NULL;
429 struct f2fs_dir_entry *de;
434 unsigned int root_ino = F2FS_ROOT_INO(F2FS_I_SB(dir));
435 struct fscrypt_name fname;
437 trace_f2fs_lookup_start(dir, dentry, flags);
439 if (dentry->d_name.len > F2FS_NAME_LEN) {
444 err = fscrypt_prepare_lookup(dir, dentry, &fname);
449 de = __f2fs_find_entry(dir, &fname, &page);
450 fscrypt_free_filename(&fname);
460 ino = le32_to_cpu(de->ino);
461 f2fs_put_page(page, 0);
463 inode = f2fs_iget(dir->i_sb, ino);
465 err = PTR_ERR(inode);
469 if ((dir->i_ino == root_ino) && f2fs_has_inline_dots(dir)) {
470 err = __recover_dot_dentries(dir, root_ino);
475 if (f2fs_has_inline_dots(inode)) {
476 err = __recover_dot_dentries(inode, dir->i_ino);
480 if (f2fs_encrypted_inode(dir) &&
481 (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode)) &&
482 !fscrypt_has_permitted_context(dir, inode)) {
483 f2fs_msg(inode->i_sb, KERN_WARNING,
484 "Inconsistent encryption contexts: %lu/%lu",
485 dir->i_ino, inode->i_ino);
490 new = d_splice_alias(inode, dentry);
491 err = PTR_ERR_OR_ZERO(new);
492 trace_f2fs_lookup_end(dir, dentry, ino, err);
497 trace_f2fs_lookup_end(dir, dentry, ino, err);
501 static int f2fs_unlink(struct inode *dir, struct dentry *dentry)
503 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
504 struct inode *inode = d_inode(dentry);
505 struct f2fs_dir_entry *de;
509 trace_f2fs_unlink_enter(dir, dentry);
511 if (unlikely(f2fs_cp_error(sbi)))
514 err = dquot_initialize(dir);
517 err = dquot_initialize(inode);
521 de = f2fs_find_entry(dir, &dentry->d_name, &page);
528 f2fs_balance_fs(sbi, true);
531 err = f2fs_acquire_orphan_inode(sbi);
534 f2fs_put_page(page, 0);
537 f2fs_delete_entry(de, page, dir, inode);
541 f2fs_sync_fs(sbi->sb, 1);
543 trace_f2fs_unlink_exit(inode, err);
547 static const char *f2fs_get_link(struct dentry *dentry,
549 struct delayed_call *done)
551 const char *link = page_get_link(dentry, inode, done);
552 if (!IS_ERR(link) && !*link) {
553 /* this is broken symlink case */
554 do_delayed_call(done);
555 clear_delayed_call(done);
556 link = ERR_PTR(-ENOENT);
561 static int f2fs_symlink(struct inode *dir, struct dentry *dentry,
564 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
566 size_t len = strlen(symname);
567 struct fscrypt_str disk_link;
570 if (unlikely(f2fs_cp_error(sbi)))
573 err = fscrypt_prepare_symlink(dir, symname, len, dir->i_sb->s_blocksize,
578 err = dquot_initialize(dir);
582 inode = f2fs_new_inode(dir, S_IFLNK | S_IRWXUGO);
584 return PTR_ERR(inode);
586 if (IS_ENCRYPTED(inode))
587 inode->i_op = &f2fs_encrypted_symlink_inode_operations;
589 inode->i_op = &f2fs_symlink_inode_operations;
590 inode_nohighmem(inode);
591 inode->i_mapping->a_ops = &f2fs_dblock_aops;
594 err = f2fs_add_link(dentry, inode);
596 goto out_f2fs_handle_failed_inode;
598 f2fs_alloc_nid_done(sbi, inode->i_ino);
600 err = fscrypt_encrypt_symlink(inode, symname, len, &disk_link);
604 err = page_symlink(inode, disk_link.name, disk_link.len);
607 d_instantiate_new(dentry, inode);
610 * Let's flush symlink data in order to avoid broken symlink as much as
611 * possible. Nevertheless, fsyncing is the best way, but there is no
612 * way to get a file descriptor in order to flush that.
614 * Note that, it needs to do dir->fsync to make this recoverable.
615 * If the symlink path is stored into inline_data, there is no
616 * performance regression.
619 filemap_write_and_wait_range(inode->i_mapping, 0,
623 f2fs_sync_fs(sbi->sb, 1);
625 f2fs_unlink(dir, dentry);
628 f2fs_balance_fs(sbi, true);
629 goto out_free_encrypted_link;
631 out_f2fs_handle_failed_inode:
632 f2fs_handle_failed_inode(inode);
633 out_free_encrypted_link:
634 if (disk_link.name != (unsigned char *)symname)
635 kfree(disk_link.name);
639 static int f2fs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
641 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
645 if (unlikely(f2fs_cp_error(sbi)))
648 err = dquot_initialize(dir);
652 inode = f2fs_new_inode(dir, S_IFDIR | mode);
654 return PTR_ERR(inode);
656 inode->i_op = &f2fs_dir_inode_operations;
657 inode->i_fop = &f2fs_dir_operations;
658 inode->i_mapping->a_ops = &f2fs_dblock_aops;
659 inode_nohighmem(inode);
661 set_inode_flag(inode, FI_INC_LINK);
663 err = f2fs_add_link(dentry, inode);
668 f2fs_alloc_nid_done(sbi, inode->i_ino);
670 d_instantiate_new(dentry, inode);
673 f2fs_sync_fs(sbi->sb, 1);
675 f2fs_balance_fs(sbi, true);
679 clear_inode_flag(inode, FI_INC_LINK);
680 f2fs_handle_failed_inode(inode);
684 static int f2fs_rmdir(struct inode *dir, struct dentry *dentry)
686 struct inode *inode = d_inode(dentry);
687 if (f2fs_empty_dir(inode))
688 return f2fs_unlink(dir, dentry);
692 static int f2fs_mknod(struct inode *dir, struct dentry *dentry,
693 umode_t mode, dev_t rdev)
695 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
699 if (unlikely(f2fs_cp_error(sbi)))
702 err = dquot_initialize(dir);
706 inode = f2fs_new_inode(dir, mode);
708 return PTR_ERR(inode);
710 init_special_inode(inode, inode->i_mode, rdev);
711 inode->i_op = &f2fs_special_inode_operations;
714 err = f2fs_add_link(dentry, inode);
719 f2fs_alloc_nid_done(sbi, inode->i_ino);
721 d_instantiate_new(dentry, inode);
724 f2fs_sync_fs(sbi->sb, 1);
726 f2fs_balance_fs(sbi, true);
729 f2fs_handle_failed_inode(inode);
733 static int __f2fs_tmpfile(struct inode *dir, struct dentry *dentry,
734 umode_t mode, struct inode **whiteout)
736 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
740 err = dquot_initialize(dir);
744 inode = f2fs_new_inode(dir, mode);
746 return PTR_ERR(inode);
749 init_special_inode(inode, inode->i_mode, WHITEOUT_DEV);
750 inode->i_op = &f2fs_special_inode_operations;
752 inode->i_op = &f2fs_file_inode_operations;
753 inode->i_fop = &f2fs_file_operations;
754 inode->i_mapping->a_ops = &f2fs_dblock_aops;
758 err = f2fs_acquire_orphan_inode(sbi);
762 err = f2fs_do_tmpfile(inode, dir);
767 * add this non-linked tmpfile to orphan list, in this way we could
768 * remove all unused data of tmpfile after abnormal power-off.
770 f2fs_add_orphan_inode(inode);
771 f2fs_alloc_nid_done(sbi, inode->i_ino);
774 f2fs_i_links_write(inode, false);
776 spin_lock(&inode->i_lock);
777 inode->i_state |= I_LINKABLE;
778 spin_unlock(&inode->i_lock);
782 d_tmpfile(dentry, inode);
784 /* link_count was changed by d_tmpfile as well. */
786 unlock_new_inode(inode);
788 f2fs_balance_fs(sbi, true);
792 f2fs_release_orphan_inode(sbi);
794 f2fs_handle_failed_inode(inode);
798 static int f2fs_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode)
800 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
802 if (unlikely(f2fs_cp_error(sbi)))
805 if (f2fs_encrypted_inode(dir) || DUMMY_ENCRYPTION_ENABLED(sbi)) {
806 int err = fscrypt_get_encryption_info(dir);
811 return __f2fs_tmpfile(dir, dentry, mode, NULL);
814 static int f2fs_create_whiteout(struct inode *dir, struct inode **whiteout)
816 if (unlikely(f2fs_cp_error(F2FS_I_SB(dir))))
819 return __f2fs_tmpfile(dir, NULL, S_IFCHR | WHITEOUT_MODE, whiteout);
822 static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry,
823 struct inode *new_dir, struct dentry *new_dentry,
826 struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir);
827 struct inode *old_inode = d_inode(old_dentry);
828 struct inode *new_inode = d_inode(new_dentry);
829 struct inode *whiteout = NULL;
830 struct page *old_dir_page;
831 struct page *old_page, *new_page = NULL;
832 struct f2fs_dir_entry *old_dir_entry = NULL;
833 struct f2fs_dir_entry *old_entry;
834 struct f2fs_dir_entry *new_entry;
835 bool is_old_inline = f2fs_has_inline_dentry(old_dir);
838 if (unlikely(f2fs_cp_error(sbi)))
841 if (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
842 (!projid_eq(F2FS_I(new_dir)->i_projid,
843 F2FS_I(old_dentry->d_inode)->i_projid)))
846 if (flags & RENAME_WHITEOUT) {
847 err = f2fs_create_whiteout(old_dir, &whiteout);
852 err = dquot_initialize(old_dir);
856 err = dquot_initialize(new_dir);
861 err = dquot_initialize(new_inode);
866 old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page);
868 if (IS_ERR(old_page))
869 err = PTR_ERR(old_page);
873 if (S_ISDIR(old_inode->i_mode)) {
874 old_dir_entry = f2fs_parent_dir(old_inode, &old_dir_page);
875 if (!old_dir_entry) {
876 if (IS_ERR(old_dir_page))
877 err = PTR_ERR(old_dir_page);
885 if (old_dir_entry && !f2fs_empty_dir(new_inode))
889 new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name,
892 if (IS_ERR(new_page))
893 err = PTR_ERR(new_page);
897 f2fs_balance_fs(sbi, true);
901 err = f2fs_acquire_orphan_inode(sbi);
905 f2fs_set_link(new_dir, new_entry, new_page, old_inode);
907 new_inode->i_ctime = current_time(new_inode);
908 down_write(&F2FS_I(new_inode)->i_sem);
910 f2fs_i_links_write(new_inode, false);
911 f2fs_i_links_write(new_inode, false);
912 up_write(&F2FS_I(new_inode)->i_sem);
914 if (!new_inode->i_nlink)
915 f2fs_add_orphan_inode(new_inode);
917 f2fs_release_orphan_inode(sbi);
919 f2fs_balance_fs(sbi, true);
923 err = f2fs_add_link(new_dentry, old_inode);
930 f2fs_i_links_write(new_dir, true);
933 * old entry and new entry can locate in the same inline
934 * dentry in inode, when attaching new entry in inline dentry,
935 * it could force inline dentry conversion, after that,
936 * old_entry and old_page will point to wrong address, in
937 * order to avoid this, let's do the check and update here.
939 if (is_old_inline && !f2fs_has_inline_dentry(old_dir)) {
940 f2fs_put_page(old_page, 0);
943 old_entry = f2fs_find_entry(old_dir,
944 &old_dentry->d_name, &old_page);
947 if (IS_ERR(old_page))
948 err = PTR_ERR(old_page);
955 down_write(&F2FS_I(old_inode)->i_sem);
956 if (!old_dir_entry || whiteout)
957 file_lost_pino(old_inode);
959 /* adjust dir's i_pino to pass fsck check */
960 f2fs_i_pino_write(old_inode, new_dir->i_ino);
961 up_write(&F2FS_I(old_inode)->i_sem);
963 old_inode->i_ctime = current_time(old_inode);
964 f2fs_mark_inode_dirty_sync(old_inode, false);
966 f2fs_delete_entry(old_entry, old_page, old_dir, NULL);
969 set_inode_flag(whiteout, FI_INC_LINK);
970 err = f2fs_add_link(old_dentry, whiteout);
974 spin_lock(&whiteout->i_lock);
975 whiteout->i_state &= ~I_LINKABLE;
976 spin_unlock(&whiteout->i_lock);
982 if (old_dir != new_dir && !whiteout)
983 f2fs_set_link(old_inode, old_dir_entry,
984 old_dir_page, new_dir);
986 f2fs_put_page(old_dir_page, 0);
987 f2fs_i_links_write(old_dir, false);
989 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) {
990 f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO);
991 if (S_ISDIR(old_inode->i_mode))
992 f2fs_add_ino_entry(sbi, old_inode->i_ino,
998 if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir))
999 f2fs_sync_fs(sbi->sb, 1);
1003 f2fs_unlock_op(sbi);
1005 f2fs_put_page(new_page, 0);
1008 f2fs_put_page(old_dir_page, 0);
1010 f2fs_put_page(old_page, 0);
1017 static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry,
1018 struct inode *new_dir, struct dentry *new_dentry)
1020 struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir);
1021 struct inode *old_inode = d_inode(old_dentry);
1022 struct inode *new_inode = d_inode(new_dentry);
1023 struct page *old_dir_page, *new_dir_page;
1024 struct page *old_page, *new_page;
1025 struct f2fs_dir_entry *old_dir_entry = NULL, *new_dir_entry = NULL;
1026 struct f2fs_dir_entry *old_entry, *new_entry;
1027 int old_nlink = 0, new_nlink = 0;
1030 if (unlikely(f2fs_cp_error(sbi)))
1033 if ((is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
1034 !projid_eq(F2FS_I(new_dir)->i_projid,
1035 F2FS_I(old_dentry->d_inode)->i_projid)) ||
1036 (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
1037 !projid_eq(F2FS_I(old_dir)->i_projid,
1038 F2FS_I(new_dentry->d_inode)->i_projid)))
1041 err = dquot_initialize(old_dir);
1045 err = dquot_initialize(new_dir);
1049 old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page);
1051 if (IS_ERR(old_page))
1052 err = PTR_ERR(old_page);
1056 new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name, &new_page);
1058 if (IS_ERR(new_page))
1059 err = PTR_ERR(new_page);
1063 /* prepare for updating ".." directory entry info later */
1064 if (old_dir != new_dir) {
1065 if (S_ISDIR(old_inode->i_mode)) {
1066 old_dir_entry = f2fs_parent_dir(old_inode,
1068 if (!old_dir_entry) {
1069 if (IS_ERR(old_dir_page))
1070 err = PTR_ERR(old_dir_page);
1075 if (S_ISDIR(new_inode->i_mode)) {
1076 new_dir_entry = f2fs_parent_dir(new_inode,
1078 if (!new_dir_entry) {
1079 if (IS_ERR(new_dir_page))
1080 err = PTR_ERR(new_dir_page);
1087 * If cross rename between file and directory those are not
1088 * in the same directory, we will inc nlink of file's parent
1089 * later, so we should check upper boundary of its nlink.
1091 if ((!old_dir_entry || !new_dir_entry) &&
1092 old_dir_entry != new_dir_entry) {
1093 old_nlink = old_dir_entry ? -1 : 1;
1094 new_nlink = -old_nlink;
1096 if ((old_nlink > 0 && old_dir->i_nlink >= F2FS_LINK_MAX) ||
1097 (new_nlink > 0 && new_dir->i_nlink >= F2FS_LINK_MAX))
1101 f2fs_balance_fs(sbi, true);
1105 /* update ".." directory entry info of old dentry */
1107 f2fs_set_link(old_inode, old_dir_entry, old_dir_page, new_dir);
1109 /* update ".." directory entry info of new dentry */
1111 f2fs_set_link(new_inode, new_dir_entry, new_dir_page, old_dir);
1113 /* update directory entry info of old dir inode */
1114 f2fs_set_link(old_dir, old_entry, old_page, new_inode);
1116 down_write(&F2FS_I(old_inode)->i_sem);
1118 file_lost_pino(old_inode);
1120 /* adjust dir's i_pino to pass fsck check */
1121 f2fs_i_pino_write(old_inode, new_dir->i_ino);
1122 up_write(&F2FS_I(old_inode)->i_sem);
1124 old_dir->i_ctime = current_time(old_dir);
1126 down_write(&F2FS_I(old_dir)->i_sem);
1127 f2fs_i_links_write(old_dir, old_nlink > 0);
1128 up_write(&F2FS_I(old_dir)->i_sem);
1130 f2fs_mark_inode_dirty_sync(old_dir, false);
1132 /* update directory entry info of new dir inode */
1133 f2fs_set_link(new_dir, new_entry, new_page, old_inode);
1135 down_write(&F2FS_I(new_inode)->i_sem);
1137 file_lost_pino(new_inode);
1139 /* adjust dir's i_pino to pass fsck check */
1140 f2fs_i_pino_write(new_inode, old_dir->i_ino);
1141 up_write(&F2FS_I(new_inode)->i_sem);
1143 new_dir->i_ctime = current_time(new_dir);
1145 down_write(&F2FS_I(new_dir)->i_sem);
1146 f2fs_i_links_write(new_dir, new_nlink > 0);
1147 up_write(&F2FS_I(new_dir)->i_sem);
1149 f2fs_mark_inode_dirty_sync(new_dir, false);
1151 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) {
1152 f2fs_add_ino_entry(sbi, old_dir->i_ino, TRANS_DIR_INO);
1153 f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO);
1156 f2fs_unlock_op(sbi);
1158 if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir))
1159 f2fs_sync_fs(sbi->sb, 1);
1162 if (new_dir_entry) {
1163 f2fs_put_page(new_dir_page, 0);
1166 if (old_dir_entry) {
1167 f2fs_put_page(old_dir_page, 0);
1170 f2fs_put_page(new_page, 0);
1172 f2fs_put_page(old_page, 0);
1177 static int f2fs_rename2(struct inode *old_dir, struct dentry *old_dentry,
1178 struct inode *new_dir, struct dentry *new_dentry,
1183 if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE | RENAME_WHITEOUT))
1186 err = fscrypt_prepare_rename(old_dir, old_dentry, new_dir, new_dentry,
1191 if (flags & RENAME_EXCHANGE) {
1192 return f2fs_cross_rename(old_dir, old_dentry,
1193 new_dir, new_dentry);
1196 * VFS has already handled the new dentry existence case,
1197 * here, we just deal with "RENAME_NOREPLACE" as regular rename.
1199 return f2fs_rename(old_dir, old_dentry, new_dir, new_dentry, flags);
1202 static const char *f2fs_encrypted_get_link(struct dentry *dentry,
1203 struct inode *inode,
1204 struct delayed_call *done)
1210 return ERR_PTR(-ECHILD);
1212 page = read_mapping_page(inode->i_mapping, 0, NULL);
1214 return ERR_CAST(page);
1216 target = fscrypt_get_symlink(inode, page_address(page),
1217 inode->i_sb->s_blocksize, done);
1222 static int f2fs_encrypted_symlink_getattr(const struct path *path,
1223 struct kstat *stat, u32 request_mask,
1224 unsigned int query_flags)
1226 f2fs_getattr(path, stat, request_mask, query_flags);
1228 return fscrypt_symlink_getattr(path, stat);
1231 const struct inode_operations f2fs_encrypted_symlink_inode_operations = {
1232 .get_link = f2fs_encrypted_get_link,
1233 .getattr = f2fs_encrypted_symlink_getattr,
1234 .setattr = f2fs_setattr,
1235 #ifdef CONFIG_F2FS_FS_XATTR
1236 .listxattr = f2fs_listxattr,
1240 const struct inode_operations f2fs_dir_inode_operations = {
1241 .create = f2fs_create,
1242 .lookup = f2fs_lookup,
1244 .unlink = f2fs_unlink,
1245 .symlink = f2fs_symlink,
1246 .mkdir = f2fs_mkdir,
1247 .rmdir = f2fs_rmdir,
1248 .mknod = f2fs_mknod,
1249 .rename = f2fs_rename2,
1250 .tmpfile = f2fs_tmpfile,
1251 .getattr = f2fs_getattr,
1252 .setattr = f2fs_setattr,
1253 .get_acl = f2fs_get_acl,
1254 .set_acl = f2fs_set_acl,
1255 #ifdef CONFIG_F2FS_FS_XATTR
1256 .listxattr = f2fs_listxattr,
1260 const struct inode_operations f2fs_symlink_inode_operations = {
1261 .get_link = f2fs_get_link,
1262 .getattr = f2fs_getattr,
1263 .setattr = f2fs_setattr,
1264 #ifdef CONFIG_F2FS_FS_XATTR
1265 .listxattr = f2fs_listxattr,
1269 const struct inode_operations f2fs_special_inode_operations = {
1270 .getattr = f2fs_getattr,
1271 .setattr = f2fs_setattr,
1272 .get_acl = f2fs_get_acl,
1273 .set_acl = f2fs_set_acl,
1274 #ifdef CONFIG_F2FS_FS_XATTR
1275 .listxattr = f2fs_listxattr,