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
f2fs_new_inode(struct inode * dir,umode_t mode)25 static struct inode *f2fs_new_inode(struct inode *dir, umode_t mode)
26 {
27 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
28 nid_t ino;
29 struct inode *inode;
30 bool nid_free = false;
31 bool encrypt = false;
32 int xattr_size = 0;
33 int err;
34
35 inode = new_inode(dir->i_sb);
36 if (!inode)
37 return ERR_PTR(-ENOMEM);
38
39 f2fs_lock_op(sbi);
40 if (!f2fs_alloc_nid(sbi, &ino)) {
41 f2fs_unlock_op(sbi);
42 err = -ENOSPC;
43 goto fail;
44 }
45 f2fs_unlock_op(sbi);
46
47 nid_free = true;
48
49 inode_init_owner(&init_user_ns, inode, dir, mode);
50
51 inode->i_ino = ino;
52 inode->i_blocks = 0;
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 = prandom_u32();
56
57 if (S_ISDIR(inode->i_mode))
58 F2FS_I(inode)->i_current_depth = 1;
59
60 err = insert_inode_locked(inode);
61 if (err) {
62 err = -EINVAL;
63 goto fail;
64 }
65
66 if (f2fs_sb_has_project_quota(sbi) &&
67 (F2FS_I(dir)->i_flags & F2FS_PROJINHERIT_FL))
68 F2FS_I(inode)->i_projid = F2FS_I(dir)->i_projid;
69 else
70 F2FS_I(inode)->i_projid = make_kprojid(&init_user_ns,
71 F2FS_DEF_PROJID);
72
73 err = fscrypt_prepare_new_inode(dir, inode, &encrypt);
74 if (err)
75 goto fail_drop;
76
77 err = dquot_initialize(inode);
78 if (err)
79 goto fail_drop;
80
81 set_inode_flag(inode, FI_NEW_INODE);
82
83 if (encrypt)
84 f2fs_set_encrypted_inode(inode);
85
86 if (f2fs_sb_has_extra_attr(sbi)) {
87 set_inode_flag(inode, FI_EXTRA_ATTR);
88 F2FS_I(inode)->i_extra_isize = F2FS_TOTAL_EXTRA_ATTR_SIZE;
89 }
90
91 if (test_opt(sbi, INLINE_XATTR))
92 set_inode_flag(inode, FI_INLINE_XATTR);
93
94 if (test_opt(sbi, INLINE_DATA) && f2fs_may_inline_data(inode))
95 set_inode_flag(inode, FI_INLINE_DATA);
96 if (f2fs_may_inline_dentry(inode))
97 set_inode_flag(inode, FI_INLINE_DENTRY);
98
99 if (f2fs_sb_has_flexible_inline_xattr(sbi)) {
100 f2fs_bug_on(sbi, !f2fs_has_extra_attr(inode));
101 if (f2fs_has_inline_xattr(inode))
102 xattr_size = F2FS_OPTION(sbi).inline_xattr_size;
103 /* Otherwise, will be 0 */
104 } else if (f2fs_has_inline_xattr(inode) ||
105 f2fs_has_inline_dentry(inode)) {
106 xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
107 }
108 F2FS_I(inode)->i_inline_xattr_size = xattr_size;
109
110 f2fs_init_extent_tree(inode, NULL);
111
112 stat_inc_inline_xattr(inode);
113 stat_inc_inline_inode(inode);
114 stat_inc_inline_dir(inode);
115
116 F2FS_I(inode)->i_flags =
117 f2fs_mask_flags(mode, F2FS_I(dir)->i_flags & F2FS_FL_INHERITED);
118
119 if (S_ISDIR(inode->i_mode))
120 F2FS_I(inode)->i_flags |= F2FS_INDEX_FL;
121
122 if (F2FS_I(inode)->i_flags & F2FS_PROJINHERIT_FL)
123 set_inode_flag(inode, FI_PROJ_INHERIT);
124
125 if (f2fs_sb_has_compression(sbi)) {
126 /* Inherit the compression flag in directory */
127 if ((F2FS_I(dir)->i_flags & F2FS_COMPR_FL) &&
128 f2fs_may_compress(inode))
129 set_compress_context(inode);
130 }
131
132 f2fs_set_inode_flags(inode);
133
134 trace_f2fs_new_inode(inode, 0);
135 return inode;
136
137 fail:
138 trace_f2fs_new_inode(inode, err);
139 make_bad_inode(inode);
140 if (nid_free)
141 set_inode_flag(inode, FI_FREE_NID);
142 iput(inode);
143 return ERR_PTR(err);
144 fail_drop:
145 trace_f2fs_new_inode(inode, err);
146 dquot_drop(inode);
147 inode->i_flags |= S_NOQUOTA;
148 if (nid_free)
149 set_inode_flag(inode, FI_FREE_NID);
150 clear_nlink(inode);
151 unlock_new_inode(inode);
152 iput(inode);
153 return ERR_PTR(err);
154 }
155
is_extension_exist(const unsigned char * s,const char * sub)156 static inline int is_extension_exist(const unsigned char *s, const char *sub)
157 {
158 size_t slen = strlen(s);
159 size_t sublen = strlen(sub);
160 int i;
161
162 if (sublen == 1 && *sub == '*')
163 return 1;
164
165 /*
166 * filename format of multimedia file should be defined as:
167 * "filename + '.' + extension + (optional: '.' + temp extension)".
168 */
169 if (slen < sublen + 2)
170 return 0;
171
172 for (i = 1; i < slen - sublen; i++) {
173 if (s[i] != '.')
174 continue;
175 if (!strncasecmp(s + i + 1, sub, sublen))
176 return 1;
177 }
178
179 return 0;
180 }
181
182 /*
183 * Set file's temperature for hot/cold data separation
184 */
set_file_temperature(struct f2fs_sb_info * sbi,struct inode * inode,const unsigned char * name)185 static inline void set_file_temperature(struct f2fs_sb_info *sbi, struct inode *inode,
186 const unsigned char *name)
187 {
188 __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
189 int i, cold_count, hot_count;
190
191 down_read(&sbi->sb_lock);
192
193 cold_count = le32_to_cpu(sbi->raw_super->extension_count);
194 hot_count = sbi->raw_super->hot_ext_count;
195
196 for (i = 0; i < cold_count + hot_count; i++) {
197 if (is_extension_exist(name, extlist[i]))
198 break;
199 }
200
201 up_read(&sbi->sb_lock);
202
203 if (i == cold_count + hot_count)
204 return;
205
206 if (i < cold_count)
207 file_set_cold(inode);
208 else
209 file_set_hot(inode);
210 }
211
f2fs_update_extension_list(struct f2fs_sb_info * sbi,const char * name,bool hot,bool set)212 int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
213 bool hot, bool set)
214 {
215 __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
216 int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
217 int hot_count = sbi->raw_super->hot_ext_count;
218 int total_count = cold_count + hot_count;
219 int start, count;
220 int i;
221
222 if (set) {
223 if (total_count == F2FS_MAX_EXTENSION)
224 return -EINVAL;
225 } else {
226 if (!hot && !cold_count)
227 return -EINVAL;
228 if (hot && !hot_count)
229 return -EINVAL;
230 }
231
232 if (hot) {
233 start = cold_count;
234 count = total_count;
235 } else {
236 start = 0;
237 count = cold_count;
238 }
239
240 for (i = start; i < count; i++) {
241 if (strcmp(name, extlist[i]))
242 continue;
243
244 if (set)
245 return -EINVAL;
246
247 memcpy(extlist[i], extlist[i + 1],
248 F2FS_EXTENSION_LEN * (total_count - i - 1));
249 memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN);
250 if (hot)
251 sbi->raw_super->hot_ext_count = hot_count - 1;
252 else
253 sbi->raw_super->extension_count =
254 cpu_to_le32(cold_count - 1);
255 return 0;
256 }
257
258 if (!set)
259 return -EINVAL;
260
261 if (hot) {
262 memcpy(extlist[count], name, strlen(name));
263 sbi->raw_super->hot_ext_count = hot_count + 1;
264 } else {
265 char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN];
266
267 memcpy(buf, &extlist[cold_count],
268 F2FS_EXTENSION_LEN * hot_count);
269 memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN);
270 memcpy(extlist[cold_count], name, strlen(name));
271 memcpy(&extlist[cold_count + 1], buf,
272 F2FS_EXTENSION_LEN * hot_count);
273 sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1);
274 }
275 return 0;
276 }
277
set_compress_inode(struct f2fs_sb_info * sbi,struct inode * inode,const unsigned char * name)278 static void set_compress_inode(struct f2fs_sb_info *sbi, struct inode *inode,
279 const unsigned char *name)
280 {
281 __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
282 unsigned char (*ext)[F2FS_EXTENSION_LEN];
283 unsigned int ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
284 int i, cold_count, hot_count;
285
286 if (!f2fs_sb_has_compression(sbi) ||
287 is_inode_flag_set(inode, FI_COMPRESSED_FILE) ||
288 F2FS_I(inode)->i_flags & F2FS_NOCOMP_FL ||
289 !f2fs_may_compress(inode))
290 return;
291
292 down_read(&sbi->sb_lock);
293
294 cold_count = le32_to_cpu(sbi->raw_super->extension_count);
295 hot_count = sbi->raw_super->hot_ext_count;
296
297 for (i = cold_count; i < cold_count + hot_count; i++) {
298 if (is_extension_exist(name, extlist[i])) {
299 up_read(&sbi->sb_lock);
300 return;
301 }
302 }
303
304 up_read(&sbi->sb_lock);
305
306 ext = F2FS_OPTION(sbi).extensions;
307
308 for (i = 0; i < ext_cnt; i++) {
309 if (!is_extension_exist(name, ext[i]))
310 continue;
311
312 set_compress_context(inode);
313 return;
314 }
315 }
316
f2fs_create(struct user_namespace * mnt_userns,struct inode * dir,struct dentry * dentry,umode_t mode,bool excl)317 static int f2fs_create(struct user_namespace *mnt_userns, struct inode *dir,
318 struct dentry *dentry, umode_t mode, bool excl)
319 {
320 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
321 struct inode *inode;
322 nid_t ino = 0;
323 int err;
324
325 if (unlikely(f2fs_cp_error(sbi)))
326 return -EIO;
327 if (!f2fs_is_checkpoint_ready(sbi))
328 return -ENOSPC;
329
330 err = dquot_initialize(dir);
331 if (err)
332 return err;
333
334 inode = f2fs_new_inode(dir, mode);
335 if (IS_ERR(inode))
336 return PTR_ERR(inode);
337
338 if (!test_opt(sbi, DISABLE_EXT_IDENTIFY))
339 set_file_temperature(sbi, inode, dentry->d_name.name);
340
341 set_compress_inode(sbi, inode, dentry->d_name.name);
342
343 inode->i_op = &f2fs_file_inode_operations;
344 inode->i_fop = &f2fs_file_operations;
345 inode->i_mapping->a_ops = &f2fs_dblock_aops;
346 ino = inode->i_ino;
347
348 f2fs_lock_op(sbi);
349 err = f2fs_add_link(dentry, inode);
350 if (err)
351 goto out;
352 f2fs_unlock_op(sbi);
353
354 f2fs_alloc_nid_done(sbi, ino);
355
356 d_instantiate_new(dentry, inode);
357
358 if (IS_DIRSYNC(dir))
359 f2fs_sync_fs(sbi->sb, 1);
360
361 f2fs_balance_fs(sbi, true);
362 return 0;
363 out:
364 f2fs_handle_failed_inode(inode);
365 return err;
366 }
367
f2fs_link(struct dentry * old_dentry,struct inode * dir,struct dentry * dentry)368 static int f2fs_link(struct dentry *old_dentry, struct inode *dir,
369 struct dentry *dentry)
370 {
371 struct inode *inode = d_inode(old_dentry);
372 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
373 int err;
374
375 if (unlikely(f2fs_cp_error(sbi)))
376 return -EIO;
377 if (!f2fs_is_checkpoint_ready(sbi))
378 return -ENOSPC;
379
380 err = fscrypt_prepare_link(old_dentry, dir, dentry);
381 if (err)
382 return err;
383
384 if (is_inode_flag_set(dir, FI_PROJ_INHERIT) &&
385 (!projid_eq(F2FS_I(dir)->i_projid,
386 F2FS_I(old_dentry->d_inode)->i_projid)))
387 return -EXDEV;
388
389 err = dquot_initialize(dir);
390 if (err)
391 return err;
392
393 f2fs_balance_fs(sbi, true);
394
395 inode->i_ctime = current_time(inode);
396 ihold(inode);
397
398 set_inode_flag(inode, FI_INC_LINK);
399 f2fs_lock_op(sbi);
400 err = f2fs_add_link(dentry, inode);
401 if (err)
402 goto out;
403 f2fs_unlock_op(sbi);
404
405 d_instantiate(dentry, inode);
406
407 if (IS_DIRSYNC(dir))
408 f2fs_sync_fs(sbi->sb, 1);
409 return 0;
410 out:
411 clear_inode_flag(inode, FI_INC_LINK);
412 iput(inode);
413 f2fs_unlock_op(sbi);
414 return err;
415 }
416
f2fs_get_parent(struct dentry * child)417 struct dentry *f2fs_get_parent(struct dentry *child)
418 {
419 struct page *page;
420 unsigned long ino = f2fs_inode_by_name(d_inode(child), &dotdot_name, &page);
421
422 if (!ino) {
423 if (IS_ERR(page))
424 return ERR_CAST(page);
425 return ERR_PTR(-ENOENT);
426 }
427 return d_obtain_alias(f2fs_iget(child->d_sb, ino));
428 }
429
__recover_dot_dentries(struct inode * dir,nid_t pino)430 static int __recover_dot_dentries(struct inode *dir, nid_t pino)
431 {
432 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
433 struct qstr dot = QSTR_INIT(".", 1);
434 struct qstr dotdot = QSTR_INIT("..", 2);
435 struct f2fs_dir_entry *de;
436 struct page *page;
437 int err = 0;
438
439 if (f2fs_readonly(sbi->sb)) {
440 f2fs_info(sbi, "skip recovering inline_dots inode (ino:%lu, pino:%u) in readonly mountpoint",
441 dir->i_ino, pino);
442 return 0;
443 }
444
445 err = dquot_initialize(dir);
446 if (err)
447 return err;
448
449 f2fs_balance_fs(sbi, true);
450
451 f2fs_lock_op(sbi);
452
453 de = f2fs_find_entry(dir, &dot, &page);
454 if (de) {
455 f2fs_put_page(page, 0);
456 } else if (IS_ERR(page)) {
457 err = PTR_ERR(page);
458 goto out;
459 } else {
460 err = f2fs_do_add_link(dir, &dot, NULL, dir->i_ino, S_IFDIR);
461 if (err)
462 goto out;
463 }
464
465 de = f2fs_find_entry(dir, &dotdot, &page);
466 if (de)
467 f2fs_put_page(page, 0);
468 else if (IS_ERR(page))
469 err = PTR_ERR(page);
470 else
471 err = f2fs_do_add_link(dir, &dotdot, NULL, pino, S_IFDIR);
472 out:
473 if (!err)
474 clear_inode_flag(dir, FI_INLINE_DOTS);
475
476 f2fs_unlock_op(sbi);
477 return err;
478 }
479
f2fs_lookup(struct inode * dir,struct dentry * dentry,unsigned int flags)480 static struct dentry *f2fs_lookup(struct inode *dir, struct dentry *dentry,
481 unsigned int flags)
482 {
483 struct inode *inode = NULL;
484 struct f2fs_dir_entry *de;
485 struct page *page;
486 struct dentry *new;
487 nid_t ino = -1;
488 int err = 0;
489 unsigned int root_ino = F2FS_ROOT_INO(F2FS_I_SB(dir));
490 struct f2fs_filename fname;
491
492 trace_f2fs_lookup_start(dir, dentry, flags);
493
494 if (dentry->d_name.len > F2FS_NAME_LEN) {
495 err = -ENAMETOOLONG;
496 goto out;
497 }
498
499 err = f2fs_prepare_lookup(dir, dentry, &fname);
500 generic_set_encrypted_ci_d_ops(dentry);
501 if (err == -ENOENT)
502 goto out_splice;
503 if (err)
504 goto out;
505 de = __f2fs_find_entry(dir, &fname, &page);
506 f2fs_free_filename(&fname);
507
508 if (!de) {
509 if (IS_ERR(page)) {
510 err = PTR_ERR(page);
511 goto out;
512 }
513 err = -ENOENT;
514 goto out_splice;
515 }
516
517 ino = le32_to_cpu(de->ino);
518 f2fs_put_page(page, 0);
519
520 inode = f2fs_iget(dir->i_sb, ino);
521 if (IS_ERR(inode)) {
522 err = PTR_ERR(inode);
523 goto out;
524 }
525
526 if ((dir->i_ino == root_ino) && f2fs_has_inline_dots(dir)) {
527 err = __recover_dot_dentries(dir, root_ino);
528 if (err)
529 goto out_iput;
530 }
531
532 if (f2fs_has_inline_dots(inode)) {
533 err = __recover_dot_dentries(inode, dir->i_ino);
534 if (err)
535 goto out_iput;
536 }
537 if (IS_ENCRYPTED(dir) &&
538 (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode)) &&
539 !fscrypt_has_permitted_context(dir, inode)) {
540 f2fs_warn(F2FS_I_SB(inode), "Inconsistent encryption contexts: %lu/%lu",
541 dir->i_ino, inode->i_ino);
542 err = -EPERM;
543 goto out_iput;
544 }
545 out_splice:
546 #ifdef CONFIG_UNICODE
547 if (!inode && IS_CASEFOLDED(dir)) {
548 /* Eventually we want to call d_add_ci(dentry, NULL)
549 * for negative dentries in the encoding case as
550 * well. For now, prevent the negative dentry
551 * from being cached.
552 */
553 trace_f2fs_lookup_end(dir, dentry, ino, err);
554 return NULL;
555 }
556 #endif
557 new = d_splice_alias(inode, dentry);
558 err = PTR_ERR_OR_ZERO(new);
559 trace_f2fs_lookup_end(dir, dentry, ino, !new ? -ENOENT : err);
560 return new;
561 out_iput:
562 iput(inode);
563 out:
564 trace_f2fs_lookup_end(dir, dentry, ino, err);
565 return ERR_PTR(err);
566 }
567
f2fs_unlink(struct inode * dir,struct dentry * dentry)568 static int f2fs_unlink(struct inode *dir, struct dentry *dentry)
569 {
570 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
571 struct inode *inode = d_inode(dentry);
572 struct f2fs_dir_entry *de;
573 struct page *page;
574 int err;
575
576 trace_f2fs_unlink_enter(dir, dentry);
577
578 if (unlikely(f2fs_cp_error(sbi))) {
579 err = -EIO;
580 goto fail;
581 }
582
583 err = dquot_initialize(dir);
584 if (err)
585 goto fail;
586 err = dquot_initialize(inode);
587 if (err)
588 goto fail;
589
590 de = f2fs_find_entry(dir, &dentry->d_name, &page);
591 if (!de) {
592 if (IS_ERR(page))
593 err = PTR_ERR(page);
594 goto fail;
595 }
596
597 f2fs_balance_fs(sbi, true);
598
599 f2fs_lock_op(sbi);
600 err = f2fs_acquire_orphan_inode(sbi);
601 if (err) {
602 f2fs_unlock_op(sbi);
603 f2fs_put_page(page, 0);
604 goto fail;
605 }
606 f2fs_delete_entry(de, page, dir, inode);
607 #ifdef CONFIG_UNICODE
608 /* VFS negative dentries are incompatible with Encoding and
609 * Case-insensitiveness. Eventually we'll want avoid
610 * invalidating the dentries here, alongside with returning the
611 * negative dentries at f2fs_lookup(), when it is better
612 * supported by the VFS for the CI case.
613 */
614 if (IS_CASEFOLDED(dir))
615 d_invalidate(dentry);
616 #endif
617 f2fs_unlock_op(sbi);
618
619 if (IS_DIRSYNC(dir))
620 f2fs_sync_fs(sbi->sb, 1);
621 fail:
622 trace_f2fs_unlink_exit(inode, err);
623 return err;
624 }
625
f2fs_get_link(struct dentry * dentry,struct inode * inode,struct delayed_call * done)626 static const char *f2fs_get_link(struct dentry *dentry,
627 struct inode *inode,
628 struct delayed_call *done)
629 {
630 const char *link = page_get_link(dentry, inode, done);
631
632 if (!IS_ERR(link) && !*link) {
633 /* this is broken symlink case */
634 do_delayed_call(done);
635 clear_delayed_call(done);
636 link = ERR_PTR(-ENOENT);
637 }
638 return link;
639 }
640
f2fs_symlink(struct user_namespace * mnt_userns,struct inode * dir,struct dentry * dentry,const char * symname)641 static int f2fs_symlink(struct user_namespace *mnt_userns, struct inode *dir,
642 struct dentry *dentry, const char *symname)
643 {
644 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
645 struct inode *inode;
646 size_t len = strlen(symname);
647 struct fscrypt_str disk_link;
648 int err;
649
650 if (unlikely(f2fs_cp_error(sbi)))
651 return -EIO;
652 if (!f2fs_is_checkpoint_ready(sbi))
653 return -ENOSPC;
654
655 err = fscrypt_prepare_symlink(dir, symname, len, dir->i_sb->s_blocksize,
656 &disk_link);
657 if (err)
658 return err;
659
660 err = dquot_initialize(dir);
661 if (err)
662 return err;
663
664 inode = f2fs_new_inode(dir, S_IFLNK | S_IRWXUGO);
665 if (IS_ERR(inode))
666 return PTR_ERR(inode);
667
668 if (IS_ENCRYPTED(inode))
669 inode->i_op = &f2fs_encrypted_symlink_inode_operations;
670 else
671 inode->i_op = &f2fs_symlink_inode_operations;
672 inode_nohighmem(inode);
673 inode->i_mapping->a_ops = &f2fs_dblock_aops;
674
675 f2fs_lock_op(sbi);
676 err = f2fs_add_link(dentry, inode);
677 if (err)
678 goto out_f2fs_handle_failed_inode;
679 f2fs_unlock_op(sbi);
680 f2fs_alloc_nid_done(sbi, inode->i_ino);
681
682 err = fscrypt_encrypt_symlink(inode, symname, len, &disk_link);
683 if (err)
684 goto err_out;
685
686 err = page_symlink(inode, disk_link.name, disk_link.len);
687
688 err_out:
689 d_instantiate_new(dentry, inode);
690
691 /*
692 * Let's flush symlink data in order to avoid broken symlink as much as
693 * possible. Nevertheless, fsyncing is the best way, but there is no
694 * way to get a file descriptor in order to flush that.
695 *
696 * Note that, it needs to do dir->fsync to make this recoverable.
697 * If the symlink path is stored into inline_data, there is no
698 * performance regression.
699 */
700 if (!err) {
701 filemap_write_and_wait_range(inode->i_mapping, 0,
702 disk_link.len - 1);
703
704 if (IS_DIRSYNC(dir))
705 f2fs_sync_fs(sbi->sb, 1);
706 } else {
707 f2fs_unlink(dir, dentry);
708 }
709
710 f2fs_balance_fs(sbi, true);
711 goto out_free_encrypted_link;
712
713 out_f2fs_handle_failed_inode:
714 f2fs_handle_failed_inode(inode);
715 out_free_encrypted_link:
716 if (disk_link.name != (unsigned char *)symname)
717 kfree(disk_link.name);
718 return err;
719 }
720
f2fs_mkdir(struct user_namespace * mnt_userns,struct inode * dir,struct dentry * dentry,umode_t mode)721 static int f2fs_mkdir(struct user_namespace *mnt_userns, struct inode *dir,
722 struct dentry *dentry, umode_t mode)
723 {
724 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
725 struct inode *inode;
726 int err;
727
728 if (unlikely(f2fs_cp_error(sbi)))
729 return -EIO;
730
731 err = dquot_initialize(dir);
732 if (err)
733 return err;
734
735 inode = f2fs_new_inode(dir, S_IFDIR | mode);
736 if (IS_ERR(inode))
737 return PTR_ERR(inode);
738
739 inode->i_op = &f2fs_dir_inode_operations;
740 inode->i_fop = &f2fs_dir_operations;
741 inode->i_mapping->a_ops = &f2fs_dblock_aops;
742 inode_nohighmem(inode);
743
744 set_inode_flag(inode, FI_INC_LINK);
745 f2fs_lock_op(sbi);
746 err = f2fs_add_link(dentry, inode);
747 if (err)
748 goto out_fail;
749 f2fs_unlock_op(sbi);
750
751 f2fs_alloc_nid_done(sbi, inode->i_ino);
752
753 d_instantiate_new(dentry, inode);
754
755 if (IS_DIRSYNC(dir))
756 f2fs_sync_fs(sbi->sb, 1);
757
758 f2fs_balance_fs(sbi, true);
759 return 0;
760
761 out_fail:
762 clear_inode_flag(inode, FI_INC_LINK);
763 f2fs_handle_failed_inode(inode);
764 return err;
765 }
766
f2fs_rmdir(struct inode * dir,struct dentry * dentry)767 static int f2fs_rmdir(struct inode *dir, struct dentry *dentry)
768 {
769 struct inode *inode = d_inode(dentry);
770
771 if (f2fs_empty_dir(inode))
772 return f2fs_unlink(dir, dentry);
773 return -ENOTEMPTY;
774 }
775
f2fs_mknod(struct user_namespace * mnt_userns,struct inode * dir,struct dentry * dentry,umode_t mode,dev_t rdev)776 static int f2fs_mknod(struct user_namespace *mnt_userns, struct inode *dir,
777 struct dentry *dentry, umode_t mode, dev_t rdev)
778 {
779 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
780 struct inode *inode;
781 int err = 0;
782
783 if (unlikely(f2fs_cp_error(sbi)))
784 return -EIO;
785 if (!f2fs_is_checkpoint_ready(sbi))
786 return -ENOSPC;
787
788 err = dquot_initialize(dir);
789 if (err)
790 return err;
791
792 inode = f2fs_new_inode(dir, mode);
793 if (IS_ERR(inode))
794 return PTR_ERR(inode);
795
796 init_special_inode(inode, inode->i_mode, rdev);
797 inode->i_op = &f2fs_special_inode_operations;
798
799 f2fs_lock_op(sbi);
800 err = f2fs_add_link(dentry, inode);
801 if (err)
802 goto out;
803 f2fs_unlock_op(sbi);
804
805 f2fs_alloc_nid_done(sbi, inode->i_ino);
806
807 d_instantiate_new(dentry, inode);
808
809 if (IS_DIRSYNC(dir))
810 f2fs_sync_fs(sbi->sb, 1);
811
812 f2fs_balance_fs(sbi, true);
813 return 0;
814 out:
815 f2fs_handle_failed_inode(inode);
816 return err;
817 }
818
__f2fs_tmpfile(struct inode * dir,struct dentry * dentry,umode_t mode,struct inode ** whiteout)819 static int __f2fs_tmpfile(struct inode *dir, struct dentry *dentry,
820 umode_t mode, struct inode **whiteout)
821 {
822 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
823 struct inode *inode;
824 int err;
825
826 err = dquot_initialize(dir);
827 if (err)
828 return err;
829
830 inode = f2fs_new_inode(dir, mode);
831 if (IS_ERR(inode))
832 return PTR_ERR(inode);
833
834 if (whiteout) {
835 init_special_inode(inode, inode->i_mode, WHITEOUT_DEV);
836 inode->i_op = &f2fs_special_inode_operations;
837 } else {
838 inode->i_op = &f2fs_file_inode_operations;
839 inode->i_fop = &f2fs_file_operations;
840 inode->i_mapping->a_ops = &f2fs_dblock_aops;
841 }
842
843 f2fs_lock_op(sbi);
844 err = f2fs_acquire_orphan_inode(sbi);
845 if (err)
846 goto out;
847
848 err = f2fs_do_tmpfile(inode, dir);
849 if (err)
850 goto release_out;
851
852 /*
853 * add this non-linked tmpfile to orphan list, in this way we could
854 * remove all unused data of tmpfile after abnormal power-off.
855 */
856 f2fs_add_orphan_inode(inode);
857 f2fs_alloc_nid_done(sbi, inode->i_ino);
858
859 if (whiteout) {
860 f2fs_i_links_write(inode, false);
861
862 spin_lock(&inode->i_lock);
863 inode->i_state |= I_LINKABLE;
864 spin_unlock(&inode->i_lock);
865
866 *whiteout = inode;
867 } else {
868 d_tmpfile(dentry, inode);
869 }
870 /* link_count was changed by d_tmpfile as well. */
871 f2fs_unlock_op(sbi);
872 unlock_new_inode(inode);
873
874 f2fs_balance_fs(sbi, true);
875 return 0;
876
877 release_out:
878 f2fs_release_orphan_inode(sbi);
879 out:
880 f2fs_handle_failed_inode(inode);
881 return err;
882 }
883
f2fs_tmpfile(struct user_namespace * mnt_userns,struct inode * dir,struct dentry * dentry,umode_t mode)884 static int f2fs_tmpfile(struct user_namespace *mnt_userns, struct inode *dir,
885 struct dentry *dentry, umode_t mode)
886 {
887 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
888
889 if (unlikely(f2fs_cp_error(sbi)))
890 return -EIO;
891 if (!f2fs_is_checkpoint_ready(sbi))
892 return -ENOSPC;
893
894 return __f2fs_tmpfile(dir, dentry, mode, NULL);
895 }
896
f2fs_create_whiteout(struct inode * dir,struct inode ** whiteout)897 static int f2fs_create_whiteout(struct inode *dir, struct inode **whiteout)
898 {
899 if (unlikely(f2fs_cp_error(F2FS_I_SB(dir))))
900 return -EIO;
901
902 return __f2fs_tmpfile(dir, NULL, S_IFCHR | WHITEOUT_MODE, whiteout);
903 }
904
f2fs_rename(struct inode * old_dir,struct dentry * old_dentry,struct inode * new_dir,struct dentry * new_dentry,unsigned int flags)905 static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry,
906 struct inode *new_dir, struct dentry *new_dentry,
907 unsigned int flags)
908 {
909 struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir);
910 struct inode *old_inode = d_inode(old_dentry);
911 struct inode *new_inode = d_inode(new_dentry);
912 struct inode *whiteout = NULL;
913 struct page *old_dir_page = NULL;
914 struct page *old_page, *new_page = NULL;
915 struct f2fs_dir_entry *old_dir_entry = NULL;
916 struct f2fs_dir_entry *old_entry;
917 struct f2fs_dir_entry *new_entry;
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 if (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
926 (!projid_eq(F2FS_I(new_dir)->i_projid,
927 F2FS_I(old_dentry->d_inode)->i_projid)))
928 return -EXDEV;
929
930 /*
931 * If new_inode is null, the below renaming flow will
932 * add a link in old_dir which can conver inline_dir.
933 * After then, if we failed to get the entry due to other
934 * reasons like ENOMEM, we had to remove the new entry.
935 * Instead of adding such the error handling routine, let's
936 * simply convert first here.
937 */
938 if (old_dir == new_dir && !new_inode) {
939 err = f2fs_try_convert_inline_dir(old_dir, new_dentry);
940 if (err)
941 return err;
942 }
943
944 if (flags & RENAME_WHITEOUT) {
945 err = f2fs_create_whiteout(old_dir, &whiteout);
946 if (err)
947 return err;
948 }
949
950 err = dquot_initialize(old_dir);
951 if (err)
952 goto out;
953
954 err = dquot_initialize(new_dir);
955 if (err)
956 goto out;
957
958 if (new_inode) {
959 err = dquot_initialize(new_inode);
960 if (err)
961 goto out;
962 }
963
964 err = -ENOENT;
965 old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page);
966 if (!old_entry) {
967 if (IS_ERR(old_page))
968 err = PTR_ERR(old_page);
969 goto out;
970 }
971
972 if (S_ISDIR(old_inode->i_mode)) {
973 old_dir_entry = f2fs_parent_dir(old_inode, &old_dir_page);
974 if (!old_dir_entry) {
975 if (IS_ERR(old_dir_page))
976 err = PTR_ERR(old_dir_page);
977 goto out_old;
978 }
979 }
980
981 if (new_inode) {
982
983 err = -ENOTEMPTY;
984 if (old_dir_entry && !f2fs_empty_dir(new_inode))
985 goto out_dir;
986
987 err = -ENOENT;
988 new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name,
989 &new_page);
990 if (!new_entry) {
991 if (IS_ERR(new_page))
992 err = PTR_ERR(new_page);
993 goto out_dir;
994 }
995
996 f2fs_balance_fs(sbi, true);
997
998 f2fs_lock_op(sbi);
999
1000 err = f2fs_acquire_orphan_inode(sbi);
1001 if (err)
1002 goto put_out_dir;
1003
1004 f2fs_set_link(new_dir, new_entry, new_page, old_inode);
1005 new_page = NULL;
1006
1007 new_inode->i_ctime = current_time(new_inode);
1008 down_write(&F2FS_I(new_inode)->i_sem);
1009 if (old_dir_entry)
1010 f2fs_i_links_write(new_inode, false);
1011 f2fs_i_links_write(new_inode, false);
1012 up_write(&F2FS_I(new_inode)->i_sem);
1013
1014 if (!new_inode->i_nlink)
1015 f2fs_add_orphan_inode(new_inode);
1016 else
1017 f2fs_release_orphan_inode(sbi);
1018 } else {
1019 f2fs_balance_fs(sbi, true);
1020
1021 f2fs_lock_op(sbi);
1022
1023 err = f2fs_add_link(new_dentry, old_inode);
1024 if (err) {
1025 f2fs_unlock_op(sbi);
1026 goto out_dir;
1027 }
1028
1029 if (old_dir_entry)
1030 f2fs_i_links_write(new_dir, true);
1031 }
1032
1033 down_write(&F2FS_I(old_inode)->i_sem);
1034 if (!old_dir_entry || whiteout)
1035 file_lost_pino(old_inode);
1036 else
1037 /* adjust dir's i_pino to pass fsck check */
1038 f2fs_i_pino_write(old_inode, new_dir->i_ino);
1039 up_write(&F2FS_I(old_inode)->i_sem);
1040
1041 old_inode->i_ctime = current_time(old_inode);
1042 f2fs_mark_inode_dirty_sync(old_inode, false);
1043
1044 f2fs_delete_entry(old_entry, old_page, old_dir, NULL);
1045 old_page = NULL;
1046
1047 if (whiteout) {
1048 set_inode_flag(whiteout, FI_INC_LINK);
1049 err = f2fs_add_link(old_dentry, whiteout);
1050 if (err)
1051 goto put_out_dir;
1052
1053 spin_lock(&whiteout->i_lock);
1054 whiteout->i_state &= ~I_LINKABLE;
1055 spin_unlock(&whiteout->i_lock);
1056
1057 iput(whiteout);
1058 }
1059
1060 if (old_dir_entry) {
1061 if (old_dir != new_dir && !whiteout)
1062 f2fs_set_link(old_inode, old_dir_entry,
1063 old_dir_page, new_dir);
1064 else
1065 f2fs_put_page(old_dir_page, 0);
1066 f2fs_i_links_write(old_dir, false);
1067 }
1068 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) {
1069 f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO);
1070 if (S_ISDIR(old_inode->i_mode))
1071 f2fs_add_ino_entry(sbi, old_inode->i_ino,
1072 TRANS_DIR_INO);
1073 }
1074
1075 f2fs_unlock_op(sbi);
1076
1077 if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir))
1078 f2fs_sync_fs(sbi->sb, 1);
1079
1080 f2fs_update_time(sbi, REQ_TIME);
1081 return 0;
1082
1083 put_out_dir:
1084 f2fs_unlock_op(sbi);
1085 f2fs_put_page(new_page, 0);
1086 out_dir:
1087 if (old_dir_entry)
1088 f2fs_put_page(old_dir_page, 0);
1089 out_old:
1090 f2fs_put_page(old_page, 0);
1091 out:
1092 if (whiteout)
1093 iput(whiteout);
1094 return err;
1095 }
1096
f2fs_cross_rename(struct inode * old_dir,struct dentry * old_dentry,struct inode * new_dir,struct dentry * new_dentry)1097 static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry,
1098 struct inode *new_dir, struct dentry *new_dentry)
1099 {
1100 struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir);
1101 struct inode *old_inode = d_inode(old_dentry);
1102 struct inode *new_inode = d_inode(new_dentry);
1103 struct page *old_dir_page, *new_dir_page;
1104 struct page *old_page, *new_page;
1105 struct f2fs_dir_entry *old_dir_entry = NULL, *new_dir_entry = NULL;
1106 struct f2fs_dir_entry *old_entry, *new_entry;
1107 int old_nlink = 0, new_nlink = 0;
1108 int err;
1109
1110 if (unlikely(f2fs_cp_error(sbi)))
1111 return -EIO;
1112 if (!f2fs_is_checkpoint_ready(sbi))
1113 return -ENOSPC;
1114
1115 if ((is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
1116 !projid_eq(F2FS_I(new_dir)->i_projid,
1117 F2FS_I(old_dentry->d_inode)->i_projid)) ||
1118 (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
1119 !projid_eq(F2FS_I(old_dir)->i_projid,
1120 F2FS_I(new_dentry->d_inode)->i_projid)))
1121 return -EXDEV;
1122
1123 err = dquot_initialize(old_dir);
1124 if (err)
1125 goto out;
1126
1127 err = dquot_initialize(new_dir);
1128 if (err)
1129 goto out;
1130
1131 err = -ENOENT;
1132 old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page);
1133 if (!old_entry) {
1134 if (IS_ERR(old_page))
1135 err = PTR_ERR(old_page);
1136 goto out;
1137 }
1138
1139 new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name, &new_page);
1140 if (!new_entry) {
1141 if (IS_ERR(new_page))
1142 err = PTR_ERR(new_page);
1143 goto out_old;
1144 }
1145
1146 /* prepare for updating ".." directory entry info later */
1147 if (old_dir != new_dir) {
1148 if (S_ISDIR(old_inode->i_mode)) {
1149 old_dir_entry = f2fs_parent_dir(old_inode,
1150 &old_dir_page);
1151 if (!old_dir_entry) {
1152 if (IS_ERR(old_dir_page))
1153 err = PTR_ERR(old_dir_page);
1154 goto out_new;
1155 }
1156 }
1157
1158 if (S_ISDIR(new_inode->i_mode)) {
1159 new_dir_entry = f2fs_parent_dir(new_inode,
1160 &new_dir_page);
1161 if (!new_dir_entry) {
1162 if (IS_ERR(new_dir_page))
1163 err = PTR_ERR(new_dir_page);
1164 goto out_old_dir;
1165 }
1166 }
1167 }
1168
1169 /*
1170 * If cross rename between file and directory those are not
1171 * in the same directory, we will inc nlink of file's parent
1172 * later, so we should check upper boundary of its nlink.
1173 */
1174 if ((!old_dir_entry || !new_dir_entry) &&
1175 old_dir_entry != new_dir_entry) {
1176 old_nlink = old_dir_entry ? -1 : 1;
1177 new_nlink = -old_nlink;
1178 err = -EMLINK;
1179 if ((old_nlink > 0 && old_dir->i_nlink >= F2FS_LINK_MAX) ||
1180 (new_nlink > 0 && new_dir->i_nlink >= F2FS_LINK_MAX))
1181 goto out_new_dir;
1182 }
1183
1184 f2fs_balance_fs(sbi, true);
1185
1186 f2fs_lock_op(sbi);
1187
1188 /* update ".." directory entry info of old dentry */
1189 if (old_dir_entry)
1190 f2fs_set_link(old_inode, old_dir_entry, old_dir_page, new_dir);
1191
1192 /* update ".." directory entry info of new dentry */
1193 if (new_dir_entry)
1194 f2fs_set_link(new_inode, new_dir_entry, new_dir_page, old_dir);
1195
1196 /* update directory entry info of old dir inode */
1197 f2fs_set_link(old_dir, old_entry, old_page, new_inode);
1198
1199 down_write(&F2FS_I(old_inode)->i_sem);
1200 if (!old_dir_entry)
1201 file_lost_pino(old_inode);
1202 else
1203 /* adjust dir's i_pino to pass fsck check */
1204 f2fs_i_pino_write(old_inode, new_dir->i_ino);
1205 up_write(&F2FS_I(old_inode)->i_sem);
1206
1207 old_dir->i_ctime = current_time(old_dir);
1208 if (old_nlink) {
1209 down_write(&F2FS_I(old_dir)->i_sem);
1210 f2fs_i_links_write(old_dir, old_nlink > 0);
1211 up_write(&F2FS_I(old_dir)->i_sem);
1212 }
1213 f2fs_mark_inode_dirty_sync(old_dir, false);
1214
1215 /* update directory entry info of new dir inode */
1216 f2fs_set_link(new_dir, new_entry, new_page, old_inode);
1217
1218 down_write(&F2FS_I(new_inode)->i_sem);
1219 if (!new_dir_entry)
1220 file_lost_pino(new_inode);
1221 else
1222 /* adjust dir's i_pino to pass fsck check */
1223 f2fs_i_pino_write(new_inode, old_dir->i_ino);
1224 up_write(&F2FS_I(new_inode)->i_sem);
1225
1226 new_dir->i_ctime = current_time(new_dir);
1227 if (new_nlink) {
1228 down_write(&F2FS_I(new_dir)->i_sem);
1229 f2fs_i_links_write(new_dir, new_nlink > 0);
1230 up_write(&F2FS_I(new_dir)->i_sem);
1231 }
1232 f2fs_mark_inode_dirty_sync(new_dir, false);
1233
1234 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) {
1235 f2fs_add_ino_entry(sbi, old_dir->i_ino, TRANS_DIR_INO);
1236 f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO);
1237 }
1238
1239 f2fs_unlock_op(sbi);
1240
1241 if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir))
1242 f2fs_sync_fs(sbi->sb, 1);
1243
1244 f2fs_update_time(sbi, REQ_TIME);
1245 return 0;
1246 out_new_dir:
1247 if (new_dir_entry) {
1248 f2fs_put_page(new_dir_page, 0);
1249 }
1250 out_old_dir:
1251 if (old_dir_entry) {
1252 f2fs_put_page(old_dir_page, 0);
1253 }
1254 out_new:
1255 f2fs_put_page(new_page, 0);
1256 out_old:
1257 f2fs_put_page(old_page, 0);
1258 out:
1259 return err;
1260 }
1261
f2fs_rename2(struct user_namespace * mnt_userns,struct inode * old_dir,struct dentry * old_dentry,struct inode * new_dir,struct dentry * new_dentry,unsigned int flags)1262 static int f2fs_rename2(struct user_namespace *mnt_userns,
1263 struct inode *old_dir, struct dentry *old_dentry,
1264 struct inode *new_dir, struct dentry *new_dentry,
1265 unsigned int flags)
1266 {
1267 int err;
1268
1269 if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE | RENAME_WHITEOUT))
1270 return -EINVAL;
1271
1272 err = fscrypt_prepare_rename(old_dir, old_dentry, new_dir, new_dentry,
1273 flags);
1274 if (err)
1275 return err;
1276
1277 if (flags & RENAME_EXCHANGE) {
1278 return f2fs_cross_rename(old_dir, old_dentry,
1279 new_dir, new_dentry);
1280 }
1281 /*
1282 * VFS has already handled the new dentry existence case,
1283 * here, we just deal with "RENAME_NOREPLACE" as regular rename.
1284 */
1285 return f2fs_rename(old_dir, old_dentry, new_dir, new_dentry, flags);
1286 }
1287
f2fs_encrypted_get_link(struct dentry * dentry,struct inode * inode,struct delayed_call * done)1288 static const char *f2fs_encrypted_get_link(struct dentry *dentry,
1289 struct inode *inode,
1290 struct delayed_call *done)
1291 {
1292 struct page *page;
1293 const char *target;
1294
1295 if (!dentry)
1296 return ERR_PTR(-ECHILD);
1297
1298 page = read_mapping_page(inode->i_mapping, 0, NULL);
1299 if (IS_ERR(page))
1300 return ERR_CAST(page);
1301
1302 target = fscrypt_get_symlink(inode, page_address(page),
1303 inode->i_sb->s_blocksize, done);
1304 put_page(page);
1305 return target;
1306 }
1307
1308 const struct inode_operations f2fs_encrypted_symlink_inode_operations = {
1309 .get_link = f2fs_encrypted_get_link,
1310 .getattr = f2fs_getattr,
1311 .setattr = f2fs_setattr,
1312 .listxattr = f2fs_listxattr,
1313 };
1314
1315 const struct inode_operations f2fs_dir_inode_operations = {
1316 .create = f2fs_create,
1317 .lookup = f2fs_lookup,
1318 .link = f2fs_link,
1319 .unlink = f2fs_unlink,
1320 .symlink = f2fs_symlink,
1321 .mkdir = f2fs_mkdir,
1322 .rmdir = f2fs_rmdir,
1323 .mknod = f2fs_mknod,
1324 .rename = f2fs_rename2,
1325 .tmpfile = f2fs_tmpfile,
1326 .getattr = f2fs_getattr,
1327 .setattr = f2fs_setattr,
1328 .get_acl = f2fs_get_acl,
1329 .set_acl = f2fs_set_acl,
1330 .listxattr = f2fs_listxattr,
1331 .fiemap = f2fs_fiemap,
1332 .fileattr_get = f2fs_fileattr_get,
1333 .fileattr_set = f2fs_fileattr_set,
1334 };
1335
1336 const struct inode_operations f2fs_symlink_inode_operations = {
1337 .get_link = f2fs_get_link,
1338 .getattr = f2fs_getattr,
1339 .setattr = f2fs_setattr,
1340 .listxattr = f2fs_listxattr,
1341 };
1342
1343 const struct inode_operations f2fs_special_inode_operations = {
1344 .getattr = f2fs_getattr,
1345 .setattr = f2fs_setattr,
1346 .get_acl = f2fs_get_acl,
1347 .set_acl = f2fs_set_acl,
1348 .listxattr = f2fs_listxattr,
1349 };
1350