328cd20b16a54eed738b35b908b6eafc0f68ca43
[releases.git] / namei.c
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * fs/f2fs/namei.c
4  *
5  * Copyright (c) 2012 Samsung Electronics Co., Ltd.
6  *             http://www.samsung.com/
7  */
8 #include <linux/fs.h>
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>
17
18 #include "f2fs.h"
19 #include "node.h"
20 #include "segment.h"
21 #include "xattr.h"
22 #include "acl.h"
23 #include <trace/events/f2fs.h>
24
25 static inline int is_extension_exist(const unsigned char *s, const char *sub,
26                                                 bool tmp_ext)
27 {
28         size_t slen = strlen(s);
29         size_t sublen = strlen(sub);
30         int i;
31
32         if (sublen == 1 && *sub == '*')
33                 return 1;
34
35         /*
36          * filename format of multimedia file should be defined as:
37          * "filename + '.' + extension + (optional: '.' + temp extension)".
38          */
39         if (slen < sublen + 2)
40                 return 0;
41
42         if (!tmp_ext) {
43                 /* file has no temp extension */
44                 if (s[slen - sublen - 1] != '.')
45                         return 0;
46                 return !strncasecmp(s + slen - sublen, sub, sublen);
47         }
48
49         for (i = 1; i < slen - sublen; i++) {
50                 if (s[i] != '.')
51                         continue;
52                 if (!strncasecmp(s + i + 1, sub, sublen))
53                         return 1;
54         }
55
56         return 0;
57 }
58
59 int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
60                                                         bool hot, bool set)
61 {
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;
66         int start, count;
67         int i;
68
69         if (set) {
70                 if (total_count == F2FS_MAX_EXTENSION)
71                         return -EINVAL;
72         } else {
73                 if (!hot && !cold_count)
74                         return -EINVAL;
75                 if (hot && !hot_count)
76                         return -EINVAL;
77         }
78
79         if (hot) {
80                 start = cold_count;
81                 count = total_count;
82         } else {
83                 start = 0;
84                 count = cold_count;
85         }
86
87         for (i = start; i < count; i++) {
88                 if (strcmp(name, extlist[i]))
89                         continue;
90
91                 if (set)
92                         return -EINVAL;
93
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);
97                 if (hot)
98                         sbi->raw_super->hot_ext_count = hot_count - 1;
99                 else
100                         sbi->raw_super->extension_count =
101                                                 cpu_to_le32(cold_count - 1);
102                 return 0;
103         }
104
105         if (!set)
106                 return -EINVAL;
107
108         if (hot) {
109                 memcpy(extlist[count], name, strlen(name));
110                 sbi->raw_super->hot_ext_count = hot_count + 1;
111         } else {
112                 char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN];
113
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);
121         }
122         return 0;
123 }
124
125 static void set_compress_new_inode(struct f2fs_sb_info *sbi, struct inode *dir,
126                                 struct inode *inode, const unsigned char *name)
127 {
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;
135
136         if (!f2fs_sb_has_compression(sbi))
137                 return;
138
139         if (S_ISDIR(inode->i_mode))
140                 goto inherit_comp;
141
142         /* This name comes only from normal files. */
143         if (!name)
144                 return;
145
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))
152                         break;
153         f2fs_up_read(&sbi->sb_lock);
154         if (i < (cold_count + hot_count))
155                 return;
156
157         /* Don't compress unallowed extension. */
158         for (i = 0; i < noext_cnt; i++)
159                 if (is_extension_exist(name, noext[i], false))
160                         return;
161
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);
166                         return;
167                 }
168         }
169 inherit_comp:
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);
176         }
177 }
178
179 static struct inode *f2fs_new_inode(struct user_namespace *mnt_userns,
180                                                 struct inode *dir, umode_t mode,
181                                                 const char *name)
182 {
183         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
184         nid_t ino;
185         struct inode *inode;
186         bool nid_free = false;
187         bool encrypt = false;
188         int xattr_size = 0;
189         int err;
190
191         inode = new_inode(dir->i_sb);
192         if (!inode)
193                 return ERR_PTR(-ENOMEM);
194
195         if (!f2fs_alloc_nid(sbi, &ino)) {
196                 err = -ENOSPC;
197                 goto fail;
198         }
199
200         nid_free = true;
201
202         inode_init_owner(mnt_userns, inode, dir, mode);
203
204         inode->i_ino = ino;
205         inode->i_blocks = 0;
206         inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
207         F2FS_I(inode)->i_crtime = inode->i_mtime;
208         inode->i_generation = get_random_u32();
209
210         if (S_ISDIR(inode->i_mode))
211                 F2FS_I(inode)->i_current_depth = 1;
212
213         err = insert_inode_locked(inode);
214         if (err) {
215                 err = -EINVAL;
216                 goto fail;
217         }
218
219         if (f2fs_sb_has_project_quota(sbi) &&
220                 (F2FS_I(dir)->i_flags & F2FS_PROJINHERIT_FL))
221                 F2FS_I(inode)->i_projid = F2FS_I(dir)->i_projid;
222         else
223                 F2FS_I(inode)->i_projid = make_kprojid(mnt_userns,
224                                                         F2FS_DEF_PROJID);
225
226         err = fscrypt_prepare_new_inode(dir, inode, &encrypt);
227         if (err)
228                 goto fail_drop;
229
230         err = f2fs_dquot_initialize(inode);
231         if (err)
232                 goto fail_drop;
233
234         set_inode_flag(inode, FI_NEW_INODE);
235
236         if (encrypt)
237                 f2fs_set_encrypted_inode(inode);
238
239         if (f2fs_sb_has_extra_attr(sbi)) {
240                 set_inode_flag(inode, FI_EXTRA_ATTR);
241                 F2FS_I(inode)->i_extra_isize = F2FS_TOTAL_EXTRA_ATTR_SIZE;
242         }
243
244         if (test_opt(sbi, INLINE_XATTR))
245                 set_inode_flag(inode, FI_INLINE_XATTR);
246
247         if (f2fs_may_inline_dentry(inode))
248                 set_inode_flag(inode, FI_INLINE_DENTRY);
249
250         if (f2fs_sb_has_flexible_inline_xattr(sbi)) {
251                 f2fs_bug_on(sbi, !f2fs_has_extra_attr(inode));
252                 if (f2fs_has_inline_xattr(inode))
253                         xattr_size = F2FS_OPTION(sbi).inline_xattr_size;
254                 /* Otherwise, will be 0 */
255         } else if (f2fs_has_inline_xattr(inode) ||
256                                 f2fs_has_inline_dentry(inode)) {
257                 xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
258         }
259         F2FS_I(inode)->i_inline_xattr_size = xattr_size;
260
261         F2FS_I(inode)->i_flags =
262                 f2fs_mask_flags(mode, F2FS_I(dir)->i_flags & F2FS_FL_INHERITED);
263
264         if (S_ISDIR(inode->i_mode))
265                 F2FS_I(inode)->i_flags |= F2FS_INDEX_FL;
266
267         if (F2FS_I(inode)->i_flags & F2FS_PROJINHERIT_FL)
268                 set_inode_flag(inode, FI_PROJ_INHERIT);
269
270         /* Check compression first. */
271         set_compress_new_inode(sbi, dir, inode, name);
272
273         /* Should enable inline_data after compression set */
274         if (test_opt(sbi, INLINE_DATA) && f2fs_may_inline_data(inode))
275                 set_inode_flag(inode, FI_INLINE_DATA);
276
277         stat_inc_inline_xattr(inode);
278         stat_inc_inline_inode(inode);
279         stat_inc_inline_dir(inode);
280
281         f2fs_set_inode_flags(inode);
282
283         f2fs_init_extent_tree(inode);
284
285         trace_f2fs_new_inode(inode, 0);
286         return inode;
287
288 fail:
289         trace_f2fs_new_inode(inode, err);
290         make_bad_inode(inode);
291         if (nid_free)
292                 set_inode_flag(inode, FI_FREE_NID);
293         iput(inode);
294         return ERR_PTR(err);
295 fail_drop:
296         trace_f2fs_new_inode(inode, err);
297         dquot_drop(inode);
298         inode->i_flags |= S_NOQUOTA;
299         if (nid_free)
300                 set_inode_flag(inode, FI_FREE_NID);
301         clear_nlink(inode);
302         unlock_new_inode(inode);
303         iput(inode);
304         return ERR_PTR(err);
305 }
306
307 /*
308  * Set file's temperature for hot/cold data separation
309  */
310 static inline void set_file_temperature(struct f2fs_sb_info *sbi, struct inode *inode,
311                 const unsigned char *name)
312 {
313         __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
314         int i, cold_count, hot_count;
315
316         f2fs_down_read(&sbi->sb_lock);
317
318         cold_count = le32_to_cpu(sbi->raw_super->extension_count);
319         hot_count = sbi->raw_super->hot_ext_count;
320
321         for (i = 0; i < cold_count + hot_count; i++) {
322                 if (is_extension_exist(name, extlist[i], true))
323                         break;
324         }
325
326         f2fs_up_read(&sbi->sb_lock);
327
328         if (i == cold_count + hot_count)
329                 return;
330
331         if (i < cold_count)
332                 file_set_cold(inode);
333         else
334                 file_set_hot(inode);
335 }
336
337 static int f2fs_create(struct user_namespace *mnt_userns, struct inode *dir,
338                        struct dentry *dentry, umode_t mode, bool excl)
339 {
340         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
341         struct inode *inode;
342         nid_t ino = 0;
343         int err;
344
345         if (unlikely(f2fs_cp_error(sbi)))
346                 return -EIO;
347         if (!f2fs_is_checkpoint_ready(sbi))
348                 return -ENOSPC;
349
350         err = f2fs_dquot_initialize(dir);
351         if (err)
352                 return err;
353
354         inode = f2fs_new_inode(mnt_userns, dir, mode, dentry->d_name.name);
355         if (IS_ERR(inode))
356                 return PTR_ERR(inode);
357
358         if (!test_opt(sbi, DISABLE_EXT_IDENTIFY))
359                 set_file_temperature(sbi, inode, dentry->d_name.name);
360
361         inode->i_op = &f2fs_file_inode_operations;
362         inode->i_fop = &f2fs_file_operations;
363         inode->i_mapping->a_ops = &f2fs_dblock_aops;
364         ino = inode->i_ino;
365
366         f2fs_lock_op(sbi);
367         err = f2fs_add_link(dentry, inode);
368         if (err)
369                 goto out;
370         f2fs_unlock_op(sbi);
371
372         f2fs_alloc_nid_done(sbi, ino);
373
374         d_instantiate_new(dentry, inode);
375
376         if (IS_DIRSYNC(dir))
377                 f2fs_sync_fs(sbi->sb, 1);
378
379         f2fs_balance_fs(sbi, true);
380         return 0;
381 out:
382         f2fs_handle_failed_inode(inode);
383         return err;
384 }
385
386 static int f2fs_link(struct dentry *old_dentry, struct inode *dir,
387                 struct dentry *dentry)
388 {
389         struct inode *inode = d_inode(old_dentry);
390         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
391         int err;
392
393         if (unlikely(f2fs_cp_error(sbi)))
394                 return -EIO;
395         if (!f2fs_is_checkpoint_ready(sbi))
396                 return -ENOSPC;
397
398         err = fscrypt_prepare_link(old_dentry, dir, dentry);
399         if (err)
400                 return err;
401
402         if (is_inode_flag_set(dir, FI_PROJ_INHERIT) &&
403                         (!projid_eq(F2FS_I(dir)->i_projid,
404                         F2FS_I(old_dentry->d_inode)->i_projid)))
405                 return -EXDEV;
406
407         err = f2fs_dquot_initialize(dir);
408         if (err)
409                 return err;
410
411         f2fs_balance_fs(sbi, true);
412
413         inode->i_ctime = current_time(inode);
414         ihold(inode);
415
416         set_inode_flag(inode, FI_INC_LINK);
417         f2fs_lock_op(sbi);
418         err = f2fs_add_link(dentry, inode);
419         if (err)
420                 goto out;
421         f2fs_unlock_op(sbi);
422
423         d_instantiate(dentry, inode);
424
425         if (IS_DIRSYNC(dir))
426                 f2fs_sync_fs(sbi->sb, 1);
427         return 0;
428 out:
429         clear_inode_flag(inode, FI_INC_LINK);
430         iput(inode);
431         f2fs_unlock_op(sbi);
432         return err;
433 }
434
435 struct dentry *f2fs_get_parent(struct dentry *child)
436 {
437         struct page *page;
438         unsigned long ino = f2fs_inode_by_name(d_inode(child), &dotdot_name, &page);
439
440         if (!ino) {
441                 if (IS_ERR(page))
442                         return ERR_CAST(page);
443                 return ERR_PTR(-ENOENT);
444         }
445         return d_obtain_alias(f2fs_iget(child->d_sb, ino));
446 }
447
448 static int __recover_dot_dentries(struct inode *dir, nid_t pino)
449 {
450         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
451         struct qstr dot = QSTR_INIT(".", 1);
452         struct qstr dotdot = QSTR_INIT("..", 2);
453         struct f2fs_dir_entry *de;
454         struct page *page;
455         int err = 0;
456
457         if (f2fs_readonly(sbi->sb)) {
458                 f2fs_info(sbi, "skip recovering inline_dots inode (ino:%lu, pino:%u) in readonly mountpoint",
459                           dir->i_ino, pino);
460                 return 0;
461         }
462
463         if (!S_ISDIR(dir->i_mode)) {
464                 f2fs_err(sbi, "inconsistent inode status, skip recovering inline_dots inode (ino:%lu, i_mode:%u, pino:%u)",
465                           dir->i_ino, dir->i_mode, pino);
466                 set_sbi_flag(sbi, SBI_NEED_FSCK);
467                 return -ENOTDIR;
468         }
469
470         err = f2fs_dquot_initialize(dir);
471         if (err)
472                 return err;
473
474         f2fs_balance_fs(sbi, true);
475
476         f2fs_lock_op(sbi);
477
478         de = f2fs_find_entry(dir, &dot, &page);
479         if (de) {
480                 f2fs_put_page(page, 0);
481         } else if (IS_ERR(page)) {
482                 err = PTR_ERR(page);
483                 goto out;
484         } else {
485                 err = f2fs_do_add_link(dir, &dot, NULL, dir->i_ino, S_IFDIR);
486                 if (err)
487                         goto out;
488         }
489
490         de = f2fs_find_entry(dir, &dotdot, &page);
491         if (de)
492                 f2fs_put_page(page, 0);
493         else if (IS_ERR(page))
494                 err = PTR_ERR(page);
495         else
496                 err = f2fs_do_add_link(dir, &dotdot, NULL, pino, S_IFDIR);
497 out:
498         if (!err)
499                 clear_inode_flag(dir, FI_INLINE_DOTS);
500
501         f2fs_unlock_op(sbi);
502         return err;
503 }
504
505 static struct dentry *f2fs_lookup(struct inode *dir, struct dentry *dentry,
506                 unsigned int flags)
507 {
508         struct inode *inode = NULL;
509         struct f2fs_dir_entry *de;
510         struct page *page;
511         struct dentry *new;
512         nid_t ino = -1;
513         int err = 0;
514         unsigned int root_ino = F2FS_ROOT_INO(F2FS_I_SB(dir));
515         struct f2fs_filename fname;
516
517         trace_f2fs_lookup_start(dir, dentry, flags);
518
519         if (dentry->d_name.len > F2FS_NAME_LEN) {
520                 err = -ENAMETOOLONG;
521                 goto out;
522         }
523
524         err = f2fs_prepare_lookup(dir, dentry, &fname);
525         generic_set_encrypted_ci_d_ops(dentry);
526         if (err == -ENOENT)
527                 goto out_splice;
528         if (err)
529                 goto out;
530         de = __f2fs_find_entry(dir, &fname, &page);
531         f2fs_free_filename(&fname);
532
533         if (!de) {
534                 if (IS_ERR(page)) {
535                         err = PTR_ERR(page);
536                         goto out;
537                 }
538                 err = -ENOENT;
539                 goto out_splice;
540         }
541
542         ino = le32_to_cpu(de->ino);
543         f2fs_put_page(page, 0);
544
545         inode = f2fs_iget(dir->i_sb, ino);
546         if (IS_ERR(inode)) {
547                 err = PTR_ERR(inode);
548                 goto out;
549         }
550
551         if ((dir->i_ino == root_ino) && f2fs_has_inline_dots(dir)) {
552                 err = __recover_dot_dentries(dir, root_ino);
553                 if (err)
554                         goto out_iput;
555         }
556
557         if (f2fs_has_inline_dots(inode)) {
558                 err = __recover_dot_dentries(inode, dir->i_ino);
559                 if (err)
560                         goto out_iput;
561         }
562         if (IS_ENCRYPTED(dir) &&
563             (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode)) &&
564             !fscrypt_has_permitted_context(dir, inode)) {
565                 f2fs_warn(F2FS_I_SB(inode), "Inconsistent encryption contexts: %lu/%lu",
566                           dir->i_ino, inode->i_ino);
567                 err = -EPERM;
568                 goto out_iput;
569         }
570 out_splice:
571 #if IS_ENABLED(CONFIG_UNICODE)
572         if (!inode && IS_CASEFOLDED(dir)) {
573                 /* Eventually we want to call d_add_ci(dentry, NULL)
574                  * for negative dentries in the encoding case as
575                  * well.  For now, prevent the negative dentry
576                  * from being cached.
577                  */
578                 trace_f2fs_lookup_end(dir, dentry, ino, err);
579                 return NULL;
580         }
581 #endif
582         new = d_splice_alias(inode, dentry);
583         err = PTR_ERR_OR_ZERO(new);
584         trace_f2fs_lookup_end(dir, dentry, ino, !new ? -ENOENT : err);
585         return new;
586 out_iput:
587         iput(inode);
588 out:
589         trace_f2fs_lookup_end(dir, dentry, ino, err);
590         return ERR_PTR(err);
591 }
592
593 static int f2fs_unlink(struct inode *dir, struct dentry *dentry)
594 {
595         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
596         struct inode *inode = d_inode(dentry);
597         struct f2fs_dir_entry *de;
598         struct page *page;
599         int err;
600
601         trace_f2fs_unlink_enter(dir, dentry);
602
603         if (unlikely(f2fs_cp_error(sbi))) {
604                 err = -EIO;
605                 goto fail;
606         }
607
608         err = f2fs_dquot_initialize(dir);
609         if (err)
610                 goto fail;
611         err = f2fs_dquot_initialize(inode);
612         if (err)
613                 goto fail;
614
615         de = f2fs_find_entry(dir, &dentry->d_name, &page);
616         if (!de) {
617                 if (IS_ERR(page))
618                         err = PTR_ERR(page);
619                 goto fail;
620         }
621
622         f2fs_balance_fs(sbi, true);
623
624         f2fs_lock_op(sbi);
625         err = f2fs_acquire_orphan_inode(sbi);
626         if (err) {
627                 f2fs_unlock_op(sbi);
628                 f2fs_put_page(page, 0);
629                 goto fail;
630         }
631         f2fs_delete_entry(de, page, dir, inode);
632 #if IS_ENABLED(CONFIG_UNICODE)
633         /* VFS negative dentries are incompatible with Encoding and
634          * Case-insensitiveness. Eventually we'll want avoid
635          * invalidating the dentries here, alongside with returning the
636          * negative dentries at f2fs_lookup(), when it is better
637          * supported by the VFS for the CI case.
638          */
639         if (IS_CASEFOLDED(dir))
640                 d_invalidate(dentry);
641 #endif
642         f2fs_unlock_op(sbi);
643
644         if (IS_DIRSYNC(dir))
645                 f2fs_sync_fs(sbi->sb, 1);
646 fail:
647         trace_f2fs_unlink_exit(inode, err);
648         return err;
649 }
650
651 static const char *f2fs_get_link(struct dentry *dentry,
652                                  struct inode *inode,
653                                  struct delayed_call *done)
654 {
655         const char *link = page_get_link(dentry, inode, done);
656
657         if (!IS_ERR(link) && !*link) {
658                 /* this is broken symlink case */
659                 do_delayed_call(done);
660                 clear_delayed_call(done);
661                 link = ERR_PTR(-ENOENT);
662         }
663         return link;
664 }
665
666 static int f2fs_symlink(struct user_namespace *mnt_userns, struct inode *dir,
667                         struct dentry *dentry, const char *symname)
668 {
669         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
670         struct inode *inode;
671         size_t len = strlen(symname);
672         struct fscrypt_str disk_link;
673         int err;
674
675         if (unlikely(f2fs_cp_error(sbi)))
676                 return -EIO;
677         if (!f2fs_is_checkpoint_ready(sbi))
678                 return -ENOSPC;
679
680         err = fscrypt_prepare_symlink(dir, symname, len, dir->i_sb->s_blocksize,
681                                       &disk_link);
682         if (err)
683                 return err;
684
685         err = f2fs_dquot_initialize(dir);
686         if (err)
687                 return err;
688
689         inode = f2fs_new_inode(mnt_userns, dir, S_IFLNK | S_IRWXUGO, NULL);
690         if (IS_ERR(inode))
691                 return PTR_ERR(inode);
692
693         if (IS_ENCRYPTED(inode))
694                 inode->i_op = &f2fs_encrypted_symlink_inode_operations;
695         else
696                 inode->i_op = &f2fs_symlink_inode_operations;
697         inode_nohighmem(inode);
698         inode->i_mapping->a_ops = &f2fs_dblock_aops;
699
700         f2fs_lock_op(sbi);
701         err = f2fs_add_link(dentry, inode);
702         if (err)
703                 goto out_f2fs_handle_failed_inode;
704         f2fs_unlock_op(sbi);
705         f2fs_alloc_nid_done(sbi, inode->i_ino);
706
707         err = fscrypt_encrypt_symlink(inode, symname, len, &disk_link);
708         if (err)
709                 goto err_out;
710
711         err = page_symlink(inode, disk_link.name, disk_link.len);
712
713 err_out:
714         d_instantiate_new(dentry, inode);
715
716         /*
717          * Let's flush symlink data in order to avoid broken symlink as much as
718          * possible. Nevertheless, fsyncing is the best way, but there is no
719          * way to get a file descriptor in order to flush that.
720          *
721          * Note that, it needs to do dir->fsync to make this recoverable.
722          * If the symlink path is stored into inline_data, there is no
723          * performance regression.
724          */
725         if (!err) {
726                 filemap_write_and_wait_range(inode->i_mapping, 0,
727                                                         disk_link.len - 1);
728
729                 if (IS_DIRSYNC(dir))
730                         f2fs_sync_fs(sbi->sb, 1);
731         } else {
732                 f2fs_unlink(dir, dentry);
733         }
734
735         f2fs_balance_fs(sbi, true);
736         goto out_free_encrypted_link;
737
738 out_f2fs_handle_failed_inode:
739         f2fs_handle_failed_inode(inode);
740 out_free_encrypted_link:
741         if (disk_link.name != (unsigned char *)symname)
742                 kfree(disk_link.name);
743         return err;
744 }
745
746 static int f2fs_mkdir(struct user_namespace *mnt_userns, struct inode *dir,
747                       struct dentry *dentry, umode_t mode)
748 {
749         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
750         struct inode *inode;
751         int err;
752
753         if (unlikely(f2fs_cp_error(sbi)))
754                 return -EIO;
755
756         err = f2fs_dquot_initialize(dir);
757         if (err)
758                 return err;
759
760         inode = f2fs_new_inode(mnt_userns, dir, S_IFDIR | mode, NULL);
761         if (IS_ERR(inode))
762                 return PTR_ERR(inode);
763
764         inode->i_op = &f2fs_dir_inode_operations;
765         inode->i_fop = &f2fs_dir_operations;
766         inode->i_mapping->a_ops = &f2fs_dblock_aops;
767         mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
768
769         set_inode_flag(inode, FI_INC_LINK);
770         f2fs_lock_op(sbi);
771         err = f2fs_add_link(dentry, inode);
772         if (err)
773                 goto out_fail;
774         f2fs_unlock_op(sbi);
775
776         f2fs_alloc_nid_done(sbi, inode->i_ino);
777
778         d_instantiate_new(dentry, inode);
779
780         if (IS_DIRSYNC(dir))
781                 f2fs_sync_fs(sbi->sb, 1);
782
783         f2fs_balance_fs(sbi, true);
784         return 0;
785
786 out_fail:
787         clear_inode_flag(inode, FI_INC_LINK);
788         f2fs_handle_failed_inode(inode);
789         return err;
790 }
791
792 static int f2fs_rmdir(struct inode *dir, struct dentry *dentry)
793 {
794         struct inode *inode = d_inode(dentry);
795
796         if (f2fs_empty_dir(inode))
797                 return f2fs_unlink(dir, dentry);
798         return -ENOTEMPTY;
799 }
800
801 static int f2fs_mknod(struct user_namespace *mnt_userns, struct inode *dir,
802                       struct dentry *dentry, umode_t mode, dev_t rdev)
803 {
804         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
805         struct inode *inode;
806         int err = 0;
807
808         if (unlikely(f2fs_cp_error(sbi)))
809                 return -EIO;
810         if (!f2fs_is_checkpoint_ready(sbi))
811                 return -ENOSPC;
812
813         err = f2fs_dquot_initialize(dir);
814         if (err)
815                 return err;
816
817         inode = f2fs_new_inode(mnt_userns, dir, mode, NULL);
818         if (IS_ERR(inode))
819                 return PTR_ERR(inode);
820
821         init_special_inode(inode, inode->i_mode, rdev);
822         inode->i_op = &f2fs_special_inode_operations;
823
824         f2fs_lock_op(sbi);
825         err = f2fs_add_link(dentry, inode);
826         if (err)
827                 goto out;
828         f2fs_unlock_op(sbi);
829
830         f2fs_alloc_nid_done(sbi, inode->i_ino);
831
832         d_instantiate_new(dentry, inode);
833
834         if (IS_DIRSYNC(dir))
835                 f2fs_sync_fs(sbi->sb, 1);
836
837         f2fs_balance_fs(sbi, true);
838         return 0;
839 out:
840         f2fs_handle_failed_inode(inode);
841         return err;
842 }
843
844 static int __f2fs_tmpfile(struct user_namespace *mnt_userns, struct inode *dir,
845                           struct file *file, umode_t mode, bool is_whiteout,
846                           struct inode **new_inode)
847 {
848         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
849         struct inode *inode;
850         int err;
851
852         err = f2fs_dquot_initialize(dir);
853         if (err)
854                 return err;
855
856         inode = f2fs_new_inode(mnt_userns, dir, mode, NULL);
857         if (IS_ERR(inode))
858                 return PTR_ERR(inode);
859
860         if (is_whiteout) {
861                 init_special_inode(inode, inode->i_mode, WHITEOUT_DEV);
862                 inode->i_op = &f2fs_special_inode_operations;
863         } else {
864                 inode->i_op = &f2fs_file_inode_operations;
865                 inode->i_fop = &f2fs_file_operations;
866                 inode->i_mapping->a_ops = &f2fs_dblock_aops;
867         }
868
869         f2fs_lock_op(sbi);
870         err = f2fs_acquire_orphan_inode(sbi);
871         if (err)
872                 goto out;
873
874         err = f2fs_do_tmpfile(inode, dir);
875         if (err)
876                 goto release_out;
877
878         /*
879          * add this non-linked tmpfile to orphan list, in this way we could
880          * remove all unused data of tmpfile after abnormal power-off.
881          */
882         f2fs_add_orphan_inode(inode);
883         f2fs_alloc_nid_done(sbi, inode->i_ino);
884
885         if (is_whiteout) {
886                 f2fs_i_links_write(inode, false);
887
888                 spin_lock(&inode->i_lock);
889                 inode->i_state |= I_LINKABLE;
890                 spin_unlock(&inode->i_lock);
891         } else {
892                 if (file)
893                         d_tmpfile(file, inode);
894                 else
895                         f2fs_i_links_write(inode, false);
896         }
897         /* link_count was changed by d_tmpfile as well. */
898         f2fs_unlock_op(sbi);
899         unlock_new_inode(inode);
900
901         if (new_inode)
902                 *new_inode = inode;
903
904         f2fs_balance_fs(sbi, true);
905         return 0;
906
907 release_out:
908         f2fs_release_orphan_inode(sbi);
909 out:
910         f2fs_handle_failed_inode(inode);
911         return err;
912 }
913
914 static int f2fs_tmpfile(struct user_namespace *mnt_userns, struct inode *dir,
915                         struct file *file, umode_t mode)
916 {
917         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
918         int err;
919
920         if (unlikely(f2fs_cp_error(sbi)))
921                 return -EIO;
922         if (!f2fs_is_checkpoint_ready(sbi))
923                 return -ENOSPC;
924
925         err = __f2fs_tmpfile(mnt_userns, dir, file, mode, false, NULL);
926
927         return finish_open_simple(file, err);
928 }
929
930 static int f2fs_create_whiteout(struct user_namespace *mnt_userns,
931                                 struct inode *dir, struct inode **whiteout)
932 {
933         if (unlikely(f2fs_cp_error(F2FS_I_SB(dir))))
934                 return -EIO;
935
936         return __f2fs_tmpfile(mnt_userns, dir, NULL,
937                                 S_IFCHR | WHITEOUT_MODE, true, whiteout);
938 }
939
940 int f2fs_get_tmpfile(struct user_namespace *mnt_userns, struct inode *dir,
941                      struct inode **new_inode)
942 {
943         return __f2fs_tmpfile(mnt_userns, dir, NULL, S_IFREG, false, new_inode);
944 }
945
946 static int f2fs_rename(struct user_namespace *mnt_userns, struct inode *old_dir,
947                         struct dentry *old_dentry, struct inode *new_dir,
948                         struct dentry *new_dentry, unsigned int flags)
949 {
950         struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir);
951         struct inode *old_inode = d_inode(old_dentry);
952         struct inode *new_inode = d_inode(new_dentry);
953         struct inode *whiteout = NULL;
954         struct page *old_dir_page = NULL;
955         struct page *old_page, *new_page = NULL;
956         struct f2fs_dir_entry *old_dir_entry = NULL;
957         struct f2fs_dir_entry *old_entry;
958         struct f2fs_dir_entry *new_entry;
959         int err;
960
961         if (unlikely(f2fs_cp_error(sbi)))
962                 return -EIO;
963         if (!f2fs_is_checkpoint_ready(sbi))
964                 return -ENOSPC;
965
966         if (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
967                         (!projid_eq(F2FS_I(new_dir)->i_projid,
968                         F2FS_I(old_dentry->d_inode)->i_projid)))
969                 return -EXDEV;
970
971         /*
972          * If new_inode is null, the below renaming flow will
973          * add a link in old_dir which can conver inline_dir.
974          * After then, if we failed to get the entry due to other
975          * reasons like ENOMEM, we had to remove the new entry.
976          * Instead of adding such the error handling routine, let's
977          * simply convert first here.
978          */
979         if (old_dir == new_dir && !new_inode) {
980                 err = f2fs_try_convert_inline_dir(old_dir, new_dentry);
981                 if (err)
982                         return err;
983         }
984
985         if (flags & RENAME_WHITEOUT) {
986                 err = f2fs_create_whiteout(mnt_userns, old_dir, &whiteout);
987                 if (err)
988                         return err;
989         }
990
991         err = f2fs_dquot_initialize(old_dir);
992         if (err)
993                 goto out;
994
995         err = f2fs_dquot_initialize(new_dir);
996         if (err)
997                 goto out;
998
999         if (new_inode) {
1000                 err = f2fs_dquot_initialize(new_inode);
1001                 if (err)
1002                         goto out;
1003         }
1004
1005         err = -ENOENT;
1006         old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page);
1007         if (!old_entry) {
1008                 if (IS_ERR(old_page))
1009                         err = PTR_ERR(old_page);
1010                 goto out;
1011         }
1012
1013         if (S_ISDIR(old_inode->i_mode)) {
1014                 old_dir_entry = f2fs_parent_dir(old_inode, &old_dir_page);
1015                 if (!old_dir_entry) {
1016                         if (IS_ERR(old_dir_page))
1017                                 err = PTR_ERR(old_dir_page);
1018                         goto out_old;
1019                 }
1020         }
1021
1022         if (new_inode) {
1023
1024                 err = -ENOTEMPTY;
1025                 if (old_dir_entry && !f2fs_empty_dir(new_inode))
1026                         goto out_dir;
1027
1028                 err = -ENOENT;
1029                 new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name,
1030                                                 &new_page);
1031                 if (!new_entry) {
1032                         if (IS_ERR(new_page))
1033                                 err = PTR_ERR(new_page);
1034                         goto out_dir;
1035                 }
1036
1037                 f2fs_balance_fs(sbi, true);
1038
1039                 f2fs_lock_op(sbi);
1040
1041                 err = f2fs_acquire_orphan_inode(sbi);
1042                 if (err)
1043                         goto put_out_dir;
1044
1045                 f2fs_set_link(new_dir, new_entry, new_page, old_inode);
1046                 new_page = NULL;
1047
1048                 new_inode->i_ctime = current_time(new_inode);
1049                 f2fs_down_write(&F2FS_I(new_inode)->i_sem);
1050                 if (old_dir_entry)
1051                         f2fs_i_links_write(new_inode, false);
1052                 f2fs_i_links_write(new_inode, false);
1053                 f2fs_up_write(&F2FS_I(new_inode)->i_sem);
1054
1055                 if (!new_inode->i_nlink)
1056                         f2fs_add_orphan_inode(new_inode);
1057                 else
1058                         f2fs_release_orphan_inode(sbi);
1059         } else {
1060                 f2fs_balance_fs(sbi, true);
1061
1062                 f2fs_lock_op(sbi);
1063
1064                 err = f2fs_add_link(new_dentry, old_inode);
1065                 if (err) {
1066                         f2fs_unlock_op(sbi);
1067                         goto out_dir;
1068                 }
1069
1070                 if (old_dir_entry)
1071                         f2fs_i_links_write(new_dir, true);
1072         }
1073
1074         f2fs_down_write(&F2FS_I(old_inode)->i_sem);
1075         if (!old_dir_entry || whiteout)
1076                 file_lost_pino(old_inode);
1077         else
1078                 /* adjust dir's i_pino to pass fsck check */
1079                 f2fs_i_pino_write(old_inode, new_dir->i_ino);
1080         f2fs_up_write(&F2FS_I(old_inode)->i_sem);
1081
1082         old_inode->i_ctime = current_time(old_inode);
1083         f2fs_mark_inode_dirty_sync(old_inode, false);
1084
1085         f2fs_delete_entry(old_entry, old_page, old_dir, NULL);
1086         old_page = NULL;
1087
1088         if (whiteout) {
1089                 set_inode_flag(whiteout, FI_INC_LINK);
1090                 err = f2fs_add_link(old_dentry, whiteout);
1091                 if (err)
1092                         goto put_out_dir;
1093
1094                 spin_lock(&whiteout->i_lock);
1095                 whiteout->i_state &= ~I_LINKABLE;
1096                 spin_unlock(&whiteout->i_lock);
1097
1098                 iput(whiteout);
1099         }
1100
1101         if (old_dir_entry) {
1102                 if (old_dir != new_dir)
1103                         f2fs_set_link(old_inode, old_dir_entry,
1104                                                 old_dir_page, new_dir);
1105                 else
1106                         f2fs_put_page(old_dir_page, 0);
1107                 f2fs_i_links_write(old_dir, false);
1108         }
1109         if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) {
1110                 f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO);
1111                 if (S_ISDIR(old_inode->i_mode))
1112                         f2fs_add_ino_entry(sbi, old_inode->i_ino,
1113                                                         TRANS_DIR_INO);
1114         }
1115
1116         f2fs_unlock_op(sbi);
1117
1118         if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir))
1119                 f2fs_sync_fs(sbi->sb, 1);
1120
1121         f2fs_update_time(sbi, REQ_TIME);
1122         return 0;
1123
1124 put_out_dir:
1125         f2fs_unlock_op(sbi);
1126         f2fs_put_page(new_page, 0);
1127 out_dir:
1128         if (old_dir_entry)
1129                 f2fs_put_page(old_dir_page, 0);
1130 out_old:
1131         f2fs_put_page(old_page, 0);
1132 out:
1133         iput(whiteout);
1134         return err;
1135 }
1136
1137 static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry,
1138                              struct inode *new_dir, struct dentry *new_dentry)
1139 {
1140         struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir);
1141         struct inode *old_inode = d_inode(old_dentry);
1142         struct inode *new_inode = d_inode(new_dentry);
1143         struct page *old_dir_page, *new_dir_page;
1144         struct page *old_page, *new_page;
1145         struct f2fs_dir_entry *old_dir_entry = NULL, *new_dir_entry = NULL;
1146         struct f2fs_dir_entry *old_entry, *new_entry;
1147         int old_nlink = 0, new_nlink = 0;
1148         int err;
1149
1150         if (unlikely(f2fs_cp_error(sbi)))
1151                 return -EIO;
1152         if (!f2fs_is_checkpoint_ready(sbi))
1153                 return -ENOSPC;
1154
1155         if ((is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
1156                         !projid_eq(F2FS_I(new_dir)->i_projid,
1157                         F2FS_I(old_dentry->d_inode)->i_projid)) ||
1158             (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
1159                         !projid_eq(F2FS_I(old_dir)->i_projid,
1160                         F2FS_I(new_dentry->d_inode)->i_projid)))
1161                 return -EXDEV;
1162
1163         err = f2fs_dquot_initialize(old_dir);
1164         if (err)
1165                 goto out;
1166
1167         err = f2fs_dquot_initialize(new_dir);
1168         if (err)
1169                 goto out;
1170
1171         err = -ENOENT;
1172         old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page);
1173         if (!old_entry) {
1174                 if (IS_ERR(old_page))
1175                         err = PTR_ERR(old_page);
1176                 goto out;
1177         }
1178
1179         new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name, &new_page);
1180         if (!new_entry) {
1181                 if (IS_ERR(new_page))
1182                         err = PTR_ERR(new_page);
1183                 goto out_old;
1184         }
1185
1186         /* prepare for updating ".." directory entry info later */
1187         if (old_dir != new_dir) {
1188                 if (S_ISDIR(old_inode->i_mode)) {
1189                         old_dir_entry = f2fs_parent_dir(old_inode,
1190                                                         &old_dir_page);
1191                         if (!old_dir_entry) {
1192                                 if (IS_ERR(old_dir_page))
1193                                         err = PTR_ERR(old_dir_page);
1194                                 goto out_new;
1195                         }
1196                 }
1197
1198                 if (S_ISDIR(new_inode->i_mode)) {
1199                         new_dir_entry = f2fs_parent_dir(new_inode,
1200                                                         &new_dir_page);
1201                         if (!new_dir_entry) {
1202                                 if (IS_ERR(new_dir_page))
1203                                         err = PTR_ERR(new_dir_page);
1204                                 goto out_old_dir;
1205                         }
1206                 }
1207         }
1208
1209         /*
1210          * If cross rename between file and directory those are not
1211          * in the same directory, we will inc nlink of file's parent
1212          * later, so we should check upper boundary of its nlink.
1213          */
1214         if ((!old_dir_entry || !new_dir_entry) &&
1215                                 old_dir_entry != new_dir_entry) {
1216                 old_nlink = old_dir_entry ? -1 : 1;
1217                 new_nlink = -old_nlink;
1218                 err = -EMLINK;
1219                 if ((old_nlink > 0 && old_dir->i_nlink >= F2FS_LINK_MAX) ||
1220                         (new_nlink > 0 && new_dir->i_nlink >= F2FS_LINK_MAX))
1221                         goto out_new_dir;
1222         }
1223
1224         f2fs_balance_fs(sbi, true);
1225
1226         f2fs_lock_op(sbi);
1227
1228         /* update ".." directory entry info of old dentry */
1229         if (old_dir_entry)
1230                 f2fs_set_link(old_inode, old_dir_entry, old_dir_page, new_dir);
1231
1232         /* update ".." directory entry info of new dentry */
1233         if (new_dir_entry)
1234                 f2fs_set_link(new_inode, new_dir_entry, new_dir_page, old_dir);
1235
1236         /* update directory entry info of old dir inode */
1237         f2fs_set_link(old_dir, old_entry, old_page, new_inode);
1238
1239         f2fs_down_write(&F2FS_I(old_inode)->i_sem);
1240         if (!old_dir_entry)
1241                 file_lost_pino(old_inode);
1242         else
1243                 /* adjust dir's i_pino to pass fsck check */
1244                 f2fs_i_pino_write(old_inode, new_dir->i_ino);
1245         f2fs_up_write(&F2FS_I(old_inode)->i_sem);
1246
1247         old_dir->i_ctime = current_time(old_dir);
1248         if (old_nlink) {
1249                 f2fs_down_write(&F2FS_I(old_dir)->i_sem);
1250                 f2fs_i_links_write(old_dir, old_nlink > 0);
1251                 f2fs_up_write(&F2FS_I(old_dir)->i_sem);
1252         }
1253         f2fs_mark_inode_dirty_sync(old_dir, false);
1254
1255         /* update directory entry info of new dir inode */
1256         f2fs_set_link(new_dir, new_entry, new_page, old_inode);
1257
1258         f2fs_down_write(&F2FS_I(new_inode)->i_sem);
1259         if (!new_dir_entry)
1260                 file_lost_pino(new_inode);
1261         else
1262                 /* adjust dir's i_pino to pass fsck check */
1263                 f2fs_i_pino_write(new_inode, old_dir->i_ino);
1264         f2fs_up_write(&F2FS_I(new_inode)->i_sem);
1265
1266         new_dir->i_ctime = current_time(new_dir);
1267         if (new_nlink) {
1268                 f2fs_down_write(&F2FS_I(new_dir)->i_sem);
1269                 f2fs_i_links_write(new_dir, new_nlink > 0);
1270                 f2fs_up_write(&F2FS_I(new_dir)->i_sem);
1271         }
1272         f2fs_mark_inode_dirty_sync(new_dir, false);
1273
1274         if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) {
1275                 f2fs_add_ino_entry(sbi, old_dir->i_ino, TRANS_DIR_INO);
1276                 f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO);
1277         }
1278
1279         f2fs_unlock_op(sbi);
1280
1281         if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir))
1282                 f2fs_sync_fs(sbi->sb, 1);
1283
1284         f2fs_update_time(sbi, REQ_TIME);
1285         return 0;
1286 out_new_dir:
1287         if (new_dir_entry) {
1288                 f2fs_put_page(new_dir_page, 0);
1289         }
1290 out_old_dir:
1291         if (old_dir_entry) {
1292                 f2fs_put_page(old_dir_page, 0);
1293         }
1294 out_new:
1295         f2fs_put_page(new_page, 0);
1296 out_old:
1297         f2fs_put_page(old_page, 0);
1298 out:
1299         return err;
1300 }
1301
1302 static int f2fs_rename2(struct user_namespace *mnt_userns,
1303                         struct inode *old_dir, struct dentry *old_dentry,
1304                         struct inode *new_dir, struct dentry *new_dentry,
1305                         unsigned int flags)
1306 {
1307         int err;
1308
1309         if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE | RENAME_WHITEOUT))
1310                 return -EINVAL;
1311
1312         err = fscrypt_prepare_rename(old_dir, old_dentry, new_dir, new_dentry,
1313                                      flags);
1314         if (err)
1315                 return err;
1316
1317         if (flags & RENAME_EXCHANGE) {
1318                 return f2fs_cross_rename(old_dir, old_dentry,
1319                                          new_dir, new_dentry);
1320         }
1321         /*
1322          * VFS has already handled the new dentry existence case,
1323          * here, we just deal with "RENAME_NOREPLACE" as regular rename.
1324          */
1325         return f2fs_rename(mnt_userns, old_dir, old_dentry,
1326                                         new_dir, new_dentry, flags);
1327 }
1328
1329 static const char *f2fs_encrypted_get_link(struct dentry *dentry,
1330                                            struct inode *inode,
1331                                            struct delayed_call *done)
1332 {
1333         struct page *page;
1334         const char *target;
1335
1336         if (!dentry)
1337                 return ERR_PTR(-ECHILD);
1338
1339         page = read_mapping_page(inode->i_mapping, 0, NULL);
1340         if (IS_ERR(page))
1341                 return ERR_CAST(page);
1342
1343         target = fscrypt_get_symlink(inode, page_address(page),
1344                                      inode->i_sb->s_blocksize, done);
1345         put_page(page);
1346         return target;
1347 }
1348
1349 static int f2fs_encrypted_symlink_getattr(struct user_namespace *mnt_userns,
1350                                           const struct path *path,
1351                                           struct kstat *stat, u32 request_mask,
1352                                           unsigned int query_flags)
1353 {
1354         f2fs_getattr(mnt_userns, path, stat, request_mask, query_flags);
1355
1356         return fscrypt_symlink_getattr(path, stat);
1357 }
1358
1359 const struct inode_operations f2fs_encrypted_symlink_inode_operations = {
1360         .get_link       = f2fs_encrypted_get_link,
1361         .getattr        = f2fs_encrypted_symlink_getattr,
1362         .setattr        = f2fs_setattr,
1363         .listxattr      = f2fs_listxattr,
1364 };
1365
1366 const struct inode_operations f2fs_dir_inode_operations = {
1367         .create         = f2fs_create,
1368         .lookup         = f2fs_lookup,
1369         .link           = f2fs_link,
1370         .unlink         = f2fs_unlink,
1371         .symlink        = f2fs_symlink,
1372         .mkdir          = f2fs_mkdir,
1373         .rmdir          = f2fs_rmdir,
1374         .mknod          = f2fs_mknod,
1375         .rename         = f2fs_rename2,
1376         .tmpfile        = f2fs_tmpfile,
1377         .getattr        = f2fs_getattr,
1378         .setattr        = f2fs_setattr,
1379         .get_acl        = f2fs_get_acl,
1380         .set_acl        = f2fs_set_acl,
1381         .listxattr      = f2fs_listxattr,
1382         .fiemap         = f2fs_fiemap,
1383         .fileattr_get   = f2fs_fileattr_get,
1384         .fileattr_set   = f2fs_fileattr_set,
1385 };
1386
1387 const struct inode_operations f2fs_symlink_inode_operations = {
1388         .get_link       = f2fs_get_link,
1389         .getattr        = f2fs_getattr,
1390         .setattr        = f2fs_setattr,
1391         .listxattr      = f2fs_listxattr,
1392 };
1393
1394 const struct inode_operations f2fs_special_inode_operations = {
1395         .getattr        = f2fs_getattr,
1396         .setattr        = f2fs_setattr,
1397         .get_acl        = f2fs_get_acl,
1398         .set_acl        = f2fs_set_acl,
1399         .listxattr      = f2fs_listxattr,
1400 };