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
is_extension_exist(const unsigned char * s,const char * sub,bool tmp_ext,bool tmp_dot)25 static inline bool is_extension_exist(const unsigned char *s, const char *sub,
26 bool tmp_ext, bool tmp_dot)
27 {
28 size_t slen = strlen(s);
29 size_t sublen = strlen(sub);
30 int i;
31
32 if (sublen == 1 && *sub == '*')
33 return true;
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 false;
41
42 if (!tmp_ext) {
43 /* file has no temp extension */
44 if (s[slen - sublen - 1] != '.')
45 return false;
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 if (!tmp_dot)
54 return true;
55 if (i == slen - sublen - 1 || s[i + 1 + sublen] == '.')
56 return true;
57 }
58 }
59
60 return false;
61 }
62
is_temperature_extension(const unsigned char * s,const char * sub)63 static inline bool is_temperature_extension(const unsigned char *s, const char *sub)
64 {
65 return is_extension_exist(s, sub, true, false);
66 }
67
is_compress_extension(const unsigned char * s,const char * sub)68 static inline bool is_compress_extension(const unsigned char *s, const char *sub)
69 {
70 return is_extension_exist(s, sub, true, true);
71 }
72
f2fs_update_extension_list(struct f2fs_sb_info * sbi,const char * name,bool hot,bool set)73 int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
74 bool hot, bool set)
75 {
76 __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
77 int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
78 int hot_count = sbi->raw_super->hot_ext_count;
79 int total_count = cold_count + hot_count;
80 int start, count;
81 int i;
82
83 if (set) {
84 if (total_count == F2FS_MAX_EXTENSION)
85 return -EINVAL;
86 } else {
87 if (!hot && !cold_count)
88 return -EINVAL;
89 if (hot && !hot_count)
90 return -EINVAL;
91 }
92
93 if (hot) {
94 start = cold_count;
95 count = total_count;
96 } else {
97 start = 0;
98 count = cold_count;
99 }
100
101 for (i = start; i < count; i++) {
102 if (strcmp(name, extlist[i]))
103 continue;
104
105 if (set)
106 return -EINVAL;
107
108 memcpy(extlist[i], extlist[i + 1],
109 F2FS_EXTENSION_LEN * (total_count - i - 1));
110 memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN);
111 if (hot)
112 sbi->raw_super->hot_ext_count = hot_count - 1;
113 else
114 sbi->raw_super->extension_count =
115 cpu_to_le32(cold_count - 1);
116 return 0;
117 }
118
119 if (!set)
120 return -EINVAL;
121
122 if (hot) {
123 memcpy(extlist[count], name, strlen(name));
124 sbi->raw_super->hot_ext_count = hot_count + 1;
125 } else {
126 char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN];
127
128 memcpy(buf, &extlist[cold_count],
129 F2FS_EXTENSION_LEN * hot_count);
130 memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN);
131 memcpy(extlist[cold_count], name, strlen(name));
132 memcpy(&extlist[cold_count + 1], buf,
133 F2FS_EXTENSION_LEN * hot_count);
134 sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1);
135 }
136 return 0;
137 }
138
set_compress_new_inode(struct f2fs_sb_info * sbi,struct inode * dir,struct inode * inode,const unsigned char * name)139 static void set_compress_new_inode(struct f2fs_sb_info *sbi, struct inode *dir,
140 struct inode *inode, const unsigned char *name)
141 {
142 __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
143 unsigned char (*noext)[F2FS_EXTENSION_LEN] =
144 F2FS_OPTION(sbi).noextensions;
145 unsigned char (*ext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).extensions;
146 unsigned char ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
147 unsigned char noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
148 int i, cold_count, hot_count;
149
150 if (!f2fs_sb_has_compression(sbi))
151 return;
152
153 if (S_ISDIR(inode->i_mode))
154 goto inherit_comp;
155
156 /* This name comes only from normal files. */
157 if (!name)
158 return;
159
160 /* Don't compress hot files. */
161 f2fs_down_read(&sbi->sb_lock);
162 cold_count = le32_to_cpu(sbi->raw_super->extension_count);
163 hot_count = sbi->raw_super->hot_ext_count;
164 for (i = cold_count; i < cold_count + hot_count; i++)
165 if (is_temperature_extension(name, extlist[i]))
166 break;
167 f2fs_up_read(&sbi->sb_lock);
168 if (i < (cold_count + hot_count))
169 return;
170
171 /* Don't compress unallowed extension. */
172 for (i = 0; i < noext_cnt; i++)
173 if (is_compress_extension(name, noext[i]))
174 return;
175
176 /* Compress wanting extension. */
177 for (i = 0; i < ext_cnt; i++) {
178 if (is_compress_extension(name, ext[i])) {
179 set_compress_context(inode);
180 return;
181 }
182 }
183 inherit_comp:
184 /* Inherit the {no-}compression flag in directory */
185 if (F2FS_I(dir)->i_flags & F2FS_NOCOMP_FL) {
186 F2FS_I(inode)->i_flags |= F2FS_NOCOMP_FL;
187 f2fs_mark_inode_dirty_sync(inode, true);
188 } else if (F2FS_I(dir)->i_flags & F2FS_COMPR_FL) {
189 set_compress_context(inode);
190 }
191 }
192
193 /*
194 * Set file's temperature for hot/cold data separation
195 */
set_file_temperature(struct f2fs_sb_info * sbi,struct inode * inode,const unsigned char * name)196 static void set_file_temperature(struct f2fs_sb_info *sbi, struct inode *inode,
197 const unsigned char *name)
198 {
199 __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
200 int i, cold_count, hot_count;
201
202 f2fs_down_read(&sbi->sb_lock);
203 cold_count = le32_to_cpu(sbi->raw_super->extension_count);
204 hot_count = sbi->raw_super->hot_ext_count;
205 for (i = 0; i < cold_count + hot_count; i++)
206 if (is_temperature_extension(name, extlist[i]))
207 break;
208 f2fs_up_read(&sbi->sb_lock);
209
210 if (i == cold_count + hot_count)
211 return;
212
213 if (i < cold_count)
214 file_set_cold(inode);
215 else
216 file_set_hot(inode);
217 }
218
f2fs_new_inode(struct mnt_idmap * idmap,struct inode * dir,umode_t mode,const char * name)219 static struct inode *f2fs_new_inode(struct mnt_idmap *idmap,
220 struct inode *dir, umode_t mode,
221 const char *name)
222 {
223 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
224 struct f2fs_inode_info *fi;
225 nid_t ino;
226 struct inode *inode;
227 bool nid_free = false;
228 bool encrypt = false;
229 int xattr_size = 0;
230 int err;
231
232 inode = new_inode(dir->i_sb);
233 if (!inode)
234 return ERR_PTR(-ENOMEM);
235
236 if (!f2fs_alloc_nid(sbi, &ino)) {
237 err = -ENOSPC;
238 goto fail;
239 }
240
241 nid_free = true;
242
243 inode_init_owner(idmap, inode, dir, mode);
244
245 fi = F2FS_I(inode);
246 inode->i_ino = ino;
247 inode->i_blocks = 0;
248 simple_inode_init_ts(inode);
249 fi->i_crtime = inode_get_mtime(inode);
250 inode->i_generation = get_random_u32();
251
252 if (S_ISDIR(inode->i_mode))
253 fi->i_current_depth = 1;
254
255 err = insert_inode_locked(inode);
256 if (err) {
257 err = -EINVAL;
258 goto fail;
259 }
260
261 if (f2fs_sb_has_project_quota(sbi) &&
262 (F2FS_I(dir)->i_flags & F2FS_PROJINHERIT_FL))
263 fi->i_projid = F2FS_I(dir)->i_projid;
264 else
265 fi->i_projid = make_kprojid(&init_user_ns,
266 F2FS_DEF_PROJID);
267
268 err = fscrypt_prepare_new_inode(dir, inode, &encrypt);
269 if (err)
270 goto fail_drop;
271
272 err = f2fs_dquot_initialize(inode);
273 if (err)
274 goto fail_drop;
275
276 set_inode_flag(inode, FI_NEW_INODE);
277
278 if (encrypt)
279 f2fs_set_encrypted_inode(inode);
280
281 if (f2fs_sb_has_extra_attr(sbi)) {
282 set_inode_flag(inode, FI_EXTRA_ATTR);
283 fi->i_extra_isize = F2FS_TOTAL_EXTRA_ATTR_SIZE;
284 }
285
286 if (test_opt(sbi, INLINE_XATTR))
287 set_inode_flag(inode, FI_INLINE_XATTR);
288
289 if (f2fs_may_inline_dentry(inode))
290 set_inode_flag(inode, FI_INLINE_DENTRY);
291
292 if (f2fs_sb_has_flexible_inline_xattr(sbi)) {
293 f2fs_bug_on(sbi, !f2fs_has_extra_attr(inode));
294 if (f2fs_has_inline_xattr(inode))
295 xattr_size = F2FS_OPTION(sbi).inline_xattr_size;
296 /* Otherwise, will be 0 */
297 } else if (f2fs_has_inline_xattr(inode) ||
298 f2fs_has_inline_dentry(inode)) {
299 xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
300 }
301 fi->i_inline_xattr_size = xattr_size;
302
303 fi->i_flags =
304 f2fs_mask_flags(mode, F2FS_I(dir)->i_flags & F2FS_FL_INHERITED);
305
306 if (S_ISDIR(inode->i_mode))
307 fi->i_flags |= F2FS_INDEX_FL;
308
309 if (fi->i_flags & F2FS_PROJINHERIT_FL)
310 set_inode_flag(inode, FI_PROJ_INHERIT);
311
312 /* Check compression first. */
313 set_compress_new_inode(sbi, dir, inode, name);
314
315 /* Should enable inline_data after compression set */
316 if (test_opt(sbi, INLINE_DATA) && f2fs_may_inline_data(inode))
317 set_inode_flag(inode, FI_INLINE_DATA);
318
319 if (name && !test_opt(sbi, DISABLE_EXT_IDENTIFY))
320 set_file_temperature(sbi, inode, name);
321
322 stat_inc_inline_xattr(inode);
323 stat_inc_inline_inode(inode);
324 stat_inc_inline_dir(inode);
325
326 f2fs_set_inode_flags(inode);
327
328 f2fs_init_extent_tree(inode);
329
330 trace_f2fs_new_inode(inode, 0);
331 return inode;
332
333 fail:
334 trace_f2fs_new_inode(inode, err);
335 make_bad_inode(inode);
336 if (nid_free)
337 set_inode_flag(inode, FI_FREE_NID);
338 iput(inode);
339 return ERR_PTR(err);
340 fail_drop:
341 trace_f2fs_new_inode(inode, err);
342 dquot_drop(inode);
343 inode->i_flags |= S_NOQUOTA;
344 make_bad_inode(inode);
345 if (nid_free)
346 set_inode_flag(inode, FI_FREE_NID);
347 clear_nlink(inode);
348 unlock_new_inode(inode);
349 iput(inode);
350 return ERR_PTR(err);
351 }
352
f2fs_create(struct mnt_idmap * idmap,struct inode * dir,struct dentry * dentry,umode_t mode,bool excl)353 static int f2fs_create(struct mnt_idmap *idmap, struct inode *dir,
354 struct dentry *dentry, umode_t mode, bool excl)
355 {
356 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
357 struct inode *inode;
358 nid_t ino = 0;
359 int err;
360
361 if (unlikely(f2fs_cp_error(sbi)))
362 return -EIO;
363 if (!f2fs_is_checkpoint_ready(sbi))
364 return -ENOSPC;
365
366 err = f2fs_dquot_initialize(dir);
367 if (err)
368 return err;
369
370 inode = f2fs_new_inode(idmap, dir, mode, dentry->d_name.name);
371 if (IS_ERR(inode))
372 return PTR_ERR(inode);
373
374 inode->i_op = &f2fs_file_inode_operations;
375 inode->i_fop = &f2fs_file_operations;
376 inode->i_mapping->a_ops = &f2fs_dblock_aops;
377 ino = inode->i_ino;
378
379 f2fs_lock_op(sbi);
380 err = f2fs_add_link(dentry, inode);
381 if (err)
382 goto out;
383 f2fs_unlock_op(sbi);
384
385 f2fs_alloc_nid_done(sbi, ino);
386
387 d_instantiate_new(dentry, inode);
388
389 if (IS_DIRSYNC(dir))
390 f2fs_sync_fs(sbi->sb, 1);
391
392 f2fs_balance_fs(sbi, true);
393 return 0;
394 out:
395 f2fs_handle_failed_inode(inode);
396 return err;
397 }
398
f2fs_link(struct dentry * old_dentry,struct inode * dir,struct dentry * dentry)399 static int f2fs_link(struct dentry *old_dentry, struct inode *dir,
400 struct dentry *dentry)
401 {
402 struct inode *inode = d_inode(old_dentry);
403 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
404 int err;
405
406 if (unlikely(f2fs_cp_error(sbi)))
407 return -EIO;
408 if (!f2fs_is_checkpoint_ready(sbi))
409 return -ENOSPC;
410
411 err = fscrypt_prepare_link(old_dentry, dir, dentry);
412 if (err)
413 return err;
414
415 if (is_inode_flag_set(dir, FI_PROJ_INHERIT) &&
416 (!projid_eq(F2FS_I(dir)->i_projid,
417 F2FS_I(old_dentry->d_inode)->i_projid)))
418 return -EXDEV;
419
420 err = f2fs_dquot_initialize(dir);
421 if (err)
422 return err;
423
424 f2fs_balance_fs(sbi, true);
425
426 inode_set_ctime_current(inode);
427 ihold(inode);
428
429 set_inode_flag(inode, FI_INC_LINK);
430 f2fs_lock_op(sbi);
431 err = f2fs_add_link(dentry, inode);
432 if (err)
433 goto out;
434 f2fs_unlock_op(sbi);
435
436 d_instantiate(dentry, inode);
437
438 if (IS_DIRSYNC(dir))
439 f2fs_sync_fs(sbi->sb, 1);
440 return 0;
441 out:
442 clear_inode_flag(inode, FI_INC_LINK);
443 iput(inode);
444 f2fs_unlock_op(sbi);
445 return err;
446 }
447
f2fs_get_parent(struct dentry * child)448 struct dentry *f2fs_get_parent(struct dentry *child)
449 {
450 struct page *page;
451 unsigned long ino = f2fs_inode_by_name(d_inode(child), &dotdot_name, &page);
452
453 if (!ino) {
454 if (IS_ERR(page))
455 return ERR_CAST(page);
456 return ERR_PTR(-ENOENT);
457 }
458 return d_obtain_alias(f2fs_iget(child->d_sb, ino));
459 }
460
f2fs_lookup(struct inode * dir,struct dentry * dentry,unsigned int flags)461 static struct dentry *f2fs_lookup(struct inode *dir, struct dentry *dentry,
462 unsigned int flags)
463 {
464 struct inode *inode = NULL;
465 struct f2fs_dir_entry *de;
466 struct page *page;
467 struct dentry *new;
468 nid_t ino = -1;
469 int err = 0;
470 struct f2fs_filename fname;
471
472 trace_f2fs_lookup_start(dir, dentry, flags);
473
474 if (dentry->d_name.len > F2FS_NAME_LEN) {
475 err = -ENAMETOOLONG;
476 goto out;
477 }
478
479 err = f2fs_prepare_lookup(dir, dentry, &fname);
480 if (err == -ENOENT)
481 goto out_splice;
482 if (err)
483 goto out;
484 de = __f2fs_find_entry(dir, &fname, &page);
485 f2fs_free_filename(&fname);
486
487 if (!de) {
488 if (IS_ERR(page)) {
489 err = PTR_ERR(page);
490 goto out;
491 }
492 err = -ENOENT;
493 goto out_splice;
494 }
495
496 ino = le32_to_cpu(de->ino);
497 f2fs_put_page(page, 0);
498
499 inode = f2fs_iget(dir->i_sb, ino);
500 if (IS_ERR(inode)) {
501 err = PTR_ERR(inode);
502 goto out;
503 }
504
505 if (inode->i_nlink == 0) {
506 f2fs_warn(F2FS_I_SB(inode), "%s: inode (ino=%lx) has zero i_nlink",
507 __func__, inode->i_ino);
508 err = -EFSCORRUPTED;
509 set_sbi_flag(F2FS_I_SB(inode), SBI_NEED_FSCK);
510 goto out_iput;
511 }
512
513 if (IS_ENCRYPTED(dir) &&
514 (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode)) &&
515 !fscrypt_has_permitted_context(dir, inode)) {
516 f2fs_warn(F2FS_I_SB(inode), "Inconsistent encryption contexts: %lu/%lu",
517 dir->i_ino, inode->i_ino);
518 err = -EPERM;
519 goto out_iput;
520 }
521 out_splice:
522 if (IS_ENABLED(CONFIG_UNICODE) && !inode && IS_CASEFOLDED(dir)) {
523 /* Eventually we want to call d_add_ci(dentry, NULL)
524 * for negative dentries in the encoding case as
525 * well. For now, prevent the negative dentry
526 * from being cached.
527 */
528 trace_f2fs_lookup_end(dir, dentry, ino, err);
529 return NULL;
530 }
531
532 new = d_splice_alias(inode, dentry);
533 trace_f2fs_lookup_end(dir, !IS_ERR_OR_NULL(new) ? new : dentry,
534 ino, IS_ERR(new) ? PTR_ERR(new) : err);
535 return new;
536 out_iput:
537 iput(inode);
538 out:
539 trace_f2fs_lookup_end(dir, dentry, ino, err);
540 return ERR_PTR(err);
541 }
542
f2fs_unlink(struct inode * dir,struct dentry * dentry)543 static int f2fs_unlink(struct inode *dir, struct dentry *dentry)
544 {
545 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
546 struct inode *inode = d_inode(dentry);
547 struct f2fs_dir_entry *de;
548 struct page *page;
549 int err;
550
551 trace_f2fs_unlink_enter(dir, dentry);
552
553 if (unlikely(f2fs_cp_error(sbi))) {
554 err = -EIO;
555 goto fail;
556 }
557
558 err = f2fs_dquot_initialize(dir);
559 if (err)
560 goto fail;
561 err = f2fs_dquot_initialize(inode);
562 if (err)
563 goto fail;
564
565 de = f2fs_find_entry(dir, &dentry->d_name, &page);
566 if (!de) {
567 if (IS_ERR(page))
568 err = PTR_ERR(page);
569 goto fail;
570 }
571
572 f2fs_balance_fs(sbi, true);
573
574 f2fs_lock_op(sbi);
575 err = f2fs_acquire_orphan_inode(sbi);
576 if (err) {
577 f2fs_unlock_op(sbi);
578 f2fs_put_page(page, 0);
579 goto fail;
580 }
581 f2fs_delete_entry(de, page, dir, inode);
582 f2fs_unlock_op(sbi);
583
584 /* VFS negative dentries are incompatible with Encoding and
585 * Case-insensitiveness. Eventually we'll want avoid
586 * invalidating the dentries here, alongside with returning the
587 * negative dentries at f2fs_lookup(), when it is better
588 * supported by the VFS for the CI case.
589 */
590 if (IS_ENABLED(CONFIG_UNICODE) && IS_CASEFOLDED(dir))
591 d_invalidate(dentry);
592
593 if (IS_DIRSYNC(dir))
594 f2fs_sync_fs(sbi->sb, 1);
595 fail:
596 trace_f2fs_unlink_exit(inode, err);
597 return err;
598 }
599
f2fs_get_link(struct dentry * dentry,struct inode * inode,struct delayed_call * done)600 static const char *f2fs_get_link(struct dentry *dentry,
601 struct inode *inode,
602 struct delayed_call *done)
603 {
604 const char *link = page_get_link(dentry, inode, done);
605
606 if (!IS_ERR(link) && !*link) {
607 /* this is broken symlink case */
608 do_delayed_call(done);
609 clear_delayed_call(done);
610 link = ERR_PTR(-ENOENT);
611 }
612 return link;
613 }
614
f2fs_symlink(struct mnt_idmap * idmap,struct inode * dir,struct dentry * dentry,const char * symname)615 static int f2fs_symlink(struct mnt_idmap *idmap, struct inode *dir,
616 struct dentry *dentry, const char *symname)
617 {
618 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
619 struct inode *inode;
620 size_t len = strlen(symname);
621 struct fscrypt_str disk_link;
622 int err;
623
624 if (unlikely(f2fs_cp_error(sbi)))
625 return -EIO;
626 if (!f2fs_is_checkpoint_ready(sbi))
627 return -ENOSPC;
628
629 err = fscrypt_prepare_symlink(dir, symname, len, dir->i_sb->s_blocksize,
630 &disk_link);
631 if (err)
632 return err;
633
634 err = f2fs_dquot_initialize(dir);
635 if (err)
636 return err;
637
638 inode = f2fs_new_inode(idmap, dir, S_IFLNK | S_IRWXUGO, NULL);
639 if (IS_ERR(inode))
640 return PTR_ERR(inode);
641
642 if (IS_ENCRYPTED(inode))
643 inode->i_op = &f2fs_encrypted_symlink_inode_operations;
644 else
645 inode->i_op = &f2fs_symlink_inode_operations;
646 inode_nohighmem(inode);
647 inode->i_mapping->a_ops = &f2fs_dblock_aops;
648
649 f2fs_lock_op(sbi);
650 err = f2fs_add_link(dentry, inode);
651 if (err)
652 goto out_f2fs_handle_failed_inode;
653 f2fs_unlock_op(sbi);
654 f2fs_alloc_nid_done(sbi, inode->i_ino);
655
656 err = fscrypt_encrypt_symlink(inode, symname, len, &disk_link);
657 if (err)
658 goto err_out;
659
660 err = page_symlink(inode, disk_link.name, disk_link.len);
661
662 err_out:
663 d_instantiate_new(dentry, inode);
664
665 /*
666 * Let's flush symlink data in order to avoid broken symlink as much as
667 * possible. Nevertheless, fsyncing is the best way, but there is no
668 * way to get a file descriptor in order to flush that.
669 *
670 * Note that, it needs to do dir->fsync to make this recoverable.
671 * If the symlink path is stored into inline_data, there is no
672 * performance regression.
673 */
674 if (!err) {
675 filemap_write_and_wait_range(inode->i_mapping, 0,
676 disk_link.len - 1);
677
678 if (IS_DIRSYNC(dir))
679 f2fs_sync_fs(sbi->sb, 1);
680 } else {
681 f2fs_unlink(dir, dentry);
682 }
683
684 f2fs_balance_fs(sbi, true);
685 goto out_free_encrypted_link;
686
687 out_f2fs_handle_failed_inode:
688 f2fs_handle_failed_inode(inode);
689 out_free_encrypted_link:
690 if (disk_link.name != (unsigned char *)symname)
691 kfree(disk_link.name);
692 return err;
693 }
694
f2fs_mkdir(struct mnt_idmap * idmap,struct inode * dir,struct dentry * dentry,umode_t mode)695 static struct dentry *f2fs_mkdir(struct mnt_idmap *idmap, struct inode *dir,
696 struct dentry *dentry, umode_t mode)
697 {
698 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
699 struct inode *inode;
700 int err;
701
702 if (unlikely(f2fs_cp_error(sbi)))
703 return ERR_PTR(-EIO);
704
705 err = f2fs_dquot_initialize(dir);
706 if (err)
707 return ERR_PTR(err);
708
709 inode = f2fs_new_inode(idmap, dir, S_IFDIR | mode, NULL);
710 if (IS_ERR(inode))
711 return ERR_CAST(inode);
712
713 inode->i_op = &f2fs_dir_inode_operations;
714 inode->i_fop = &f2fs_dir_operations;
715 inode->i_mapping->a_ops = &f2fs_dblock_aops;
716 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
717
718 set_inode_flag(inode, FI_INC_LINK);
719 f2fs_lock_op(sbi);
720 err = f2fs_add_link(dentry, inode);
721 if (err)
722 goto out_fail;
723 f2fs_unlock_op(sbi);
724
725 f2fs_alloc_nid_done(sbi, inode->i_ino);
726
727 d_instantiate_new(dentry, inode);
728
729 if (IS_DIRSYNC(dir))
730 f2fs_sync_fs(sbi->sb, 1);
731
732 f2fs_balance_fs(sbi, true);
733 return NULL;
734
735 out_fail:
736 clear_inode_flag(inode, FI_INC_LINK);
737 f2fs_handle_failed_inode(inode);
738 return ERR_PTR(err);
739 }
740
f2fs_rmdir(struct inode * dir,struct dentry * dentry)741 static int f2fs_rmdir(struct inode *dir, struct dentry *dentry)
742 {
743 struct inode *inode = d_inode(dentry);
744
745 if (f2fs_empty_dir(inode))
746 return f2fs_unlink(dir, dentry);
747 return -ENOTEMPTY;
748 }
749
f2fs_mknod(struct mnt_idmap * idmap,struct inode * dir,struct dentry * dentry,umode_t mode,dev_t rdev)750 static int f2fs_mknod(struct mnt_idmap *idmap, struct inode *dir,
751 struct dentry *dentry, umode_t mode, dev_t rdev)
752 {
753 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
754 struct inode *inode;
755 int err = 0;
756
757 if (unlikely(f2fs_cp_error(sbi)))
758 return -EIO;
759 if (!f2fs_is_checkpoint_ready(sbi))
760 return -ENOSPC;
761
762 err = f2fs_dquot_initialize(dir);
763 if (err)
764 return err;
765
766 inode = f2fs_new_inode(idmap, dir, mode, NULL);
767 if (IS_ERR(inode))
768 return PTR_ERR(inode);
769
770 init_special_inode(inode, inode->i_mode, rdev);
771 inode->i_op = &f2fs_special_inode_operations;
772
773 f2fs_lock_op(sbi);
774 err = f2fs_add_link(dentry, inode);
775 if (err)
776 goto out;
777 f2fs_unlock_op(sbi);
778
779 f2fs_alloc_nid_done(sbi, inode->i_ino);
780
781 d_instantiate_new(dentry, inode);
782
783 if (IS_DIRSYNC(dir))
784 f2fs_sync_fs(sbi->sb, 1);
785
786 f2fs_balance_fs(sbi, true);
787 return 0;
788 out:
789 f2fs_handle_failed_inode(inode);
790 return err;
791 }
792
__f2fs_tmpfile(struct mnt_idmap * idmap,struct inode * dir,struct file * file,umode_t mode,bool is_whiteout,struct inode ** new_inode,struct f2fs_filename * fname)793 static int __f2fs_tmpfile(struct mnt_idmap *idmap, struct inode *dir,
794 struct file *file, umode_t mode, bool is_whiteout,
795 struct inode **new_inode, struct f2fs_filename *fname)
796 {
797 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
798 struct inode *inode;
799 int err;
800
801 err = f2fs_dquot_initialize(dir);
802 if (err)
803 return err;
804
805 inode = f2fs_new_inode(idmap, dir, mode, NULL);
806 if (IS_ERR(inode))
807 return PTR_ERR(inode);
808
809 if (is_whiteout) {
810 init_special_inode(inode, inode->i_mode, WHITEOUT_DEV);
811 inode->i_op = &f2fs_special_inode_operations;
812 } else {
813 inode->i_op = &f2fs_file_inode_operations;
814 inode->i_fop = &f2fs_file_operations;
815 inode->i_mapping->a_ops = &f2fs_dblock_aops;
816 }
817
818 f2fs_lock_op(sbi);
819 err = f2fs_acquire_orphan_inode(sbi);
820 if (err)
821 goto out;
822
823 err = f2fs_do_tmpfile(inode, dir, fname);
824 if (err)
825 goto release_out;
826
827 /*
828 * add this non-linked tmpfile to orphan list, in this way we could
829 * remove all unused data of tmpfile after abnormal power-off.
830 */
831 f2fs_add_orphan_inode(inode);
832 f2fs_alloc_nid_done(sbi, inode->i_ino);
833
834 if (is_whiteout) {
835 f2fs_i_links_write(inode, false);
836
837 spin_lock(&inode->i_lock);
838 inode->i_state |= I_LINKABLE;
839 spin_unlock(&inode->i_lock);
840 } else {
841 if (file)
842 d_tmpfile(file, inode);
843 else
844 f2fs_i_links_write(inode, false);
845 }
846 /* link_count was changed by d_tmpfile as well. */
847 f2fs_unlock_op(sbi);
848 unlock_new_inode(inode);
849
850 if (new_inode)
851 *new_inode = inode;
852
853 f2fs_balance_fs(sbi, true);
854 return 0;
855
856 release_out:
857 f2fs_release_orphan_inode(sbi);
858 out:
859 f2fs_handle_failed_inode(inode);
860 return err;
861 }
862
f2fs_tmpfile(struct mnt_idmap * idmap,struct inode * dir,struct file * file,umode_t mode)863 static int f2fs_tmpfile(struct mnt_idmap *idmap, struct inode *dir,
864 struct file *file, umode_t mode)
865 {
866 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
867 int err;
868
869 if (unlikely(f2fs_cp_error(sbi)))
870 return -EIO;
871 if (!f2fs_is_checkpoint_ready(sbi))
872 return -ENOSPC;
873
874 err = __f2fs_tmpfile(idmap, dir, file, mode, false, NULL, NULL);
875
876 return finish_open_simple(file, err);
877 }
878
f2fs_create_whiteout(struct mnt_idmap * idmap,struct inode * dir,struct inode ** whiteout,struct f2fs_filename * fname)879 static int f2fs_create_whiteout(struct mnt_idmap *idmap,
880 struct inode *dir, struct inode **whiteout,
881 struct f2fs_filename *fname)
882 {
883 return __f2fs_tmpfile(idmap, dir, NULL, S_IFCHR | WHITEOUT_MODE,
884 true, whiteout, fname);
885 }
886
f2fs_get_tmpfile(struct mnt_idmap * idmap,struct inode * dir,struct inode ** new_inode)887 int f2fs_get_tmpfile(struct mnt_idmap *idmap, struct inode *dir,
888 struct inode **new_inode)
889 {
890 return __f2fs_tmpfile(idmap, dir, NULL, S_IFREG,
891 false, new_inode, NULL);
892 }
893
f2fs_rename(struct mnt_idmap * idmap,struct inode * old_dir,struct dentry * old_dentry,struct inode * new_dir,struct dentry * new_dentry,unsigned int flags)894 static int f2fs_rename(struct mnt_idmap *idmap, struct inode *old_dir,
895 struct dentry *old_dentry, struct inode *new_dir,
896 struct dentry *new_dentry, unsigned int flags)
897 {
898 struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir);
899 struct inode *old_inode = d_inode(old_dentry);
900 struct inode *new_inode = d_inode(new_dentry);
901 struct inode *whiteout = NULL;
902 struct page *old_dir_page = NULL;
903 struct page *old_page, *new_page = NULL;
904 struct f2fs_dir_entry *old_dir_entry = NULL;
905 struct f2fs_dir_entry *old_entry;
906 struct f2fs_dir_entry *new_entry;
907 bool old_is_dir = S_ISDIR(old_inode->i_mode);
908 int err;
909
910 if (unlikely(f2fs_cp_error(sbi)))
911 return -EIO;
912 if (!f2fs_is_checkpoint_ready(sbi))
913 return -ENOSPC;
914
915 if (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
916 (!projid_eq(F2FS_I(new_dir)->i_projid,
917 F2FS_I(old_dentry->d_inode)->i_projid)))
918 return -EXDEV;
919
920 /*
921 * If new_inode is null, the below renaming flow will
922 * add a link in old_dir which can convert inline_dir.
923 * After then, if we failed to get the entry due to other
924 * reasons like ENOMEM, we had to remove the new entry.
925 * Instead of adding such the error handling routine, let's
926 * simply convert first here.
927 */
928 if (old_dir == new_dir && !new_inode) {
929 err = f2fs_try_convert_inline_dir(old_dir, new_dentry);
930 if (err)
931 return err;
932 }
933
934 if (flags & RENAME_WHITEOUT) {
935 struct f2fs_filename fname;
936
937 err = f2fs_setup_filename(old_dir, &old_dentry->d_name,
938 0, &fname);
939 if (err)
940 return err;
941
942 err = f2fs_create_whiteout(idmap, old_dir, &whiteout, &fname);
943 if (err)
944 return err;
945 }
946
947 err = f2fs_dquot_initialize(old_dir);
948 if (err)
949 goto out;
950
951 err = f2fs_dquot_initialize(new_dir);
952 if (err)
953 goto out;
954
955 if (new_inode) {
956 err = f2fs_dquot_initialize(new_inode);
957 if (err)
958 goto out;
959 }
960
961 err = -ENOENT;
962 old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page);
963 if (!old_entry) {
964 if (IS_ERR(old_page))
965 err = PTR_ERR(old_page);
966 goto out;
967 }
968
969 if (old_is_dir && old_dir != new_dir) {
970 old_dir_entry = f2fs_parent_dir(old_inode, &old_dir_page);
971 if (!old_dir_entry) {
972 if (IS_ERR(old_dir_page))
973 err = PTR_ERR(old_dir_page);
974 goto out_old;
975 }
976 }
977
978 if (new_inode) {
979
980 err = -ENOTEMPTY;
981 if (old_is_dir && !f2fs_empty_dir(new_inode))
982 goto out_dir;
983
984 err = -ENOENT;
985 new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name,
986 &new_page);
987 if (!new_entry) {
988 if (IS_ERR(new_page))
989 err = PTR_ERR(new_page);
990 goto out_dir;
991 }
992
993 f2fs_balance_fs(sbi, true);
994
995 f2fs_lock_op(sbi);
996
997 err = f2fs_acquire_orphan_inode(sbi);
998 if (err)
999 goto put_out_dir;
1000
1001 f2fs_set_link(new_dir, new_entry, new_page, old_inode);
1002 new_page = NULL;
1003
1004 inode_set_ctime_current(new_inode);
1005 f2fs_down_write(&F2FS_I(new_inode)->i_sem);
1006 if (old_is_dir)
1007 f2fs_i_links_write(new_inode, false);
1008 f2fs_i_links_write(new_inode, false);
1009 f2fs_up_write(&F2FS_I(new_inode)->i_sem);
1010
1011 if (!new_inode->i_nlink)
1012 f2fs_add_orphan_inode(new_inode);
1013 else
1014 f2fs_release_orphan_inode(sbi);
1015 } else {
1016 f2fs_balance_fs(sbi, true);
1017
1018 f2fs_lock_op(sbi);
1019
1020 err = f2fs_add_link(new_dentry, old_inode);
1021 if (err) {
1022 f2fs_unlock_op(sbi);
1023 goto out_dir;
1024 }
1025
1026 if (old_is_dir)
1027 f2fs_i_links_write(new_dir, true);
1028 }
1029
1030 f2fs_down_write(&F2FS_I(old_inode)->i_sem);
1031 if (!old_is_dir || whiteout)
1032 file_lost_pino(old_inode);
1033 else
1034 /* adjust dir's i_pino to pass fsck check */
1035 f2fs_i_pino_write(old_inode, new_dir->i_ino);
1036 f2fs_up_write(&F2FS_I(old_inode)->i_sem);
1037
1038 inode_set_ctime_current(old_inode);
1039 f2fs_mark_inode_dirty_sync(old_inode, false);
1040
1041 f2fs_delete_entry(old_entry, old_page, old_dir, NULL);
1042 old_page = NULL;
1043
1044 if (whiteout) {
1045 set_inode_flag(whiteout, FI_INC_LINK);
1046 err = f2fs_add_link(old_dentry, whiteout);
1047 if (err)
1048 goto put_out_dir;
1049
1050 spin_lock(&whiteout->i_lock);
1051 whiteout->i_state &= ~I_LINKABLE;
1052 spin_unlock(&whiteout->i_lock);
1053
1054 iput(whiteout);
1055 }
1056
1057 if (old_dir_entry)
1058 f2fs_set_link(old_inode, old_dir_entry, old_dir_page, new_dir);
1059 if (old_is_dir)
1060 f2fs_i_links_write(old_dir, false);
1061
1062 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) {
1063 f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO);
1064 if (S_ISDIR(old_inode->i_mode))
1065 f2fs_add_ino_entry(sbi, old_inode->i_ino,
1066 TRANS_DIR_INO);
1067 }
1068
1069 f2fs_unlock_op(sbi);
1070
1071 if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir))
1072 f2fs_sync_fs(sbi->sb, 1);
1073
1074 f2fs_update_time(sbi, REQ_TIME);
1075 return 0;
1076
1077 put_out_dir:
1078 f2fs_unlock_op(sbi);
1079 f2fs_put_page(new_page, 0);
1080 out_dir:
1081 if (old_dir_entry)
1082 f2fs_put_page(old_dir_page, 0);
1083 out_old:
1084 f2fs_put_page(old_page, 0);
1085 out:
1086 iput(whiteout);
1087 return err;
1088 }
1089
f2fs_cross_rename(struct inode * old_dir,struct dentry * old_dentry,struct inode * new_dir,struct dentry * new_dentry)1090 static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry,
1091 struct inode *new_dir, struct dentry *new_dentry)
1092 {
1093 struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir);
1094 struct inode *old_inode = d_inode(old_dentry);
1095 struct inode *new_inode = d_inode(new_dentry);
1096 struct page *old_dir_page, *new_dir_page;
1097 struct page *old_page, *new_page;
1098 struct f2fs_dir_entry *old_dir_entry = NULL, *new_dir_entry = NULL;
1099 struct f2fs_dir_entry *old_entry, *new_entry;
1100 int old_nlink = 0, new_nlink = 0;
1101 int err;
1102
1103 if (unlikely(f2fs_cp_error(sbi)))
1104 return -EIO;
1105 if (!f2fs_is_checkpoint_ready(sbi))
1106 return -ENOSPC;
1107
1108 if ((is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
1109 !projid_eq(F2FS_I(new_dir)->i_projid,
1110 F2FS_I(old_dentry->d_inode)->i_projid)) ||
1111 (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
1112 !projid_eq(F2FS_I(old_dir)->i_projid,
1113 F2FS_I(new_dentry->d_inode)->i_projid)))
1114 return -EXDEV;
1115
1116 err = f2fs_dquot_initialize(old_dir);
1117 if (err)
1118 goto out;
1119
1120 err = f2fs_dquot_initialize(new_dir);
1121 if (err)
1122 goto out;
1123
1124 err = -ENOENT;
1125 old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page);
1126 if (!old_entry) {
1127 if (IS_ERR(old_page))
1128 err = PTR_ERR(old_page);
1129 goto out;
1130 }
1131
1132 new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name, &new_page);
1133 if (!new_entry) {
1134 if (IS_ERR(new_page))
1135 err = PTR_ERR(new_page);
1136 goto out_old;
1137 }
1138
1139 /* prepare for updating ".." directory entry info later */
1140 if (old_dir != new_dir) {
1141 if (S_ISDIR(old_inode->i_mode)) {
1142 old_dir_entry = f2fs_parent_dir(old_inode,
1143 &old_dir_page);
1144 if (!old_dir_entry) {
1145 if (IS_ERR(old_dir_page))
1146 err = PTR_ERR(old_dir_page);
1147 goto out_new;
1148 }
1149 }
1150
1151 if (S_ISDIR(new_inode->i_mode)) {
1152 new_dir_entry = f2fs_parent_dir(new_inode,
1153 &new_dir_page);
1154 if (!new_dir_entry) {
1155 if (IS_ERR(new_dir_page))
1156 err = PTR_ERR(new_dir_page);
1157 goto out_old_dir;
1158 }
1159 }
1160 }
1161
1162 /*
1163 * If cross rename between file and directory those are not
1164 * in the same directory, we will inc nlink of file's parent
1165 * later, so we should check upper boundary of its nlink.
1166 */
1167 if ((!old_dir_entry || !new_dir_entry) &&
1168 old_dir_entry != new_dir_entry) {
1169 old_nlink = old_dir_entry ? -1 : 1;
1170 new_nlink = -old_nlink;
1171 err = -EMLINK;
1172 if ((old_nlink > 0 && old_dir->i_nlink >= F2FS_LINK_MAX) ||
1173 (new_nlink > 0 && new_dir->i_nlink >= F2FS_LINK_MAX))
1174 goto out_new_dir;
1175 }
1176
1177 f2fs_balance_fs(sbi, true);
1178
1179 f2fs_lock_op(sbi);
1180
1181 /* update ".." directory entry info of old dentry */
1182 if (old_dir_entry)
1183 f2fs_set_link(old_inode, old_dir_entry, old_dir_page, new_dir);
1184
1185 /* update ".." directory entry info of new dentry */
1186 if (new_dir_entry)
1187 f2fs_set_link(new_inode, new_dir_entry, new_dir_page, old_dir);
1188
1189 /* update directory entry info of old dir inode */
1190 f2fs_set_link(old_dir, old_entry, old_page, new_inode);
1191
1192 f2fs_down_write(&F2FS_I(old_inode)->i_sem);
1193 if (!old_dir_entry)
1194 file_lost_pino(old_inode);
1195 else
1196 /* adjust dir's i_pino to pass fsck check */
1197 f2fs_i_pino_write(old_inode, new_dir->i_ino);
1198 f2fs_up_write(&F2FS_I(old_inode)->i_sem);
1199
1200 inode_set_ctime_current(old_dir);
1201 if (old_nlink) {
1202 f2fs_down_write(&F2FS_I(old_dir)->i_sem);
1203 f2fs_i_links_write(old_dir, old_nlink > 0);
1204 f2fs_up_write(&F2FS_I(old_dir)->i_sem);
1205 }
1206 f2fs_mark_inode_dirty_sync(old_dir, false);
1207
1208 /* update directory entry info of new dir inode */
1209 f2fs_set_link(new_dir, new_entry, new_page, old_inode);
1210
1211 f2fs_down_write(&F2FS_I(new_inode)->i_sem);
1212 if (!new_dir_entry)
1213 file_lost_pino(new_inode);
1214 else
1215 /* adjust dir's i_pino to pass fsck check */
1216 f2fs_i_pino_write(new_inode, old_dir->i_ino);
1217 f2fs_up_write(&F2FS_I(new_inode)->i_sem);
1218
1219 inode_set_ctime_current(new_dir);
1220 if (new_nlink) {
1221 f2fs_down_write(&F2FS_I(new_dir)->i_sem);
1222 f2fs_i_links_write(new_dir, new_nlink > 0);
1223 f2fs_up_write(&F2FS_I(new_dir)->i_sem);
1224 }
1225 f2fs_mark_inode_dirty_sync(new_dir, false);
1226
1227 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) {
1228 f2fs_add_ino_entry(sbi, old_dir->i_ino, TRANS_DIR_INO);
1229 f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO);
1230 }
1231
1232 f2fs_unlock_op(sbi);
1233
1234 if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir))
1235 f2fs_sync_fs(sbi->sb, 1);
1236
1237 f2fs_update_time(sbi, REQ_TIME);
1238 return 0;
1239 out_new_dir:
1240 if (new_dir_entry) {
1241 f2fs_put_page(new_dir_page, 0);
1242 }
1243 out_old_dir:
1244 if (old_dir_entry) {
1245 f2fs_put_page(old_dir_page, 0);
1246 }
1247 out_new:
1248 f2fs_put_page(new_page, 0);
1249 out_old:
1250 f2fs_put_page(old_page, 0);
1251 out:
1252 return err;
1253 }
1254
f2fs_rename2(struct mnt_idmap * idmap,struct inode * old_dir,struct dentry * old_dentry,struct inode * new_dir,struct dentry * new_dentry,unsigned int flags)1255 static int f2fs_rename2(struct mnt_idmap *idmap,
1256 struct inode *old_dir, struct dentry *old_dentry,
1257 struct inode *new_dir, struct dentry *new_dentry,
1258 unsigned int flags)
1259 {
1260 int err;
1261
1262 if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE | RENAME_WHITEOUT))
1263 return -EINVAL;
1264
1265 trace_f2fs_rename_start(old_dir, old_dentry, new_dir, new_dentry,
1266 flags);
1267
1268 err = fscrypt_prepare_rename(old_dir, old_dentry, new_dir, new_dentry,
1269 flags);
1270 if (err)
1271 return err;
1272
1273 if (flags & RENAME_EXCHANGE)
1274 err = f2fs_cross_rename(old_dir, old_dentry,
1275 new_dir, new_dentry);
1276 else
1277 /*
1278 * VFS has already handled the new dentry existence case,
1279 * here, we just deal with "RENAME_NOREPLACE" as regular rename.
1280 */
1281 err = f2fs_rename(idmap, old_dir, old_dentry,
1282 new_dir, new_dentry, flags);
1283
1284 trace_f2fs_rename_end(old_dentry, new_dentry, flags, err);
1285 return err;
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
f2fs_encrypted_symlink_getattr(struct mnt_idmap * idmap,const struct path * path,struct kstat * stat,u32 request_mask,unsigned int query_flags)1308 static int f2fs_encrypted_symlink_getattr(struct mnt_idmap *idmap,
1309 const struct path *path,
1310 struct kstat *stat, u32 request_mask,
1311 unsigned int query_flags)
1312 {
1313 f2fs_getattr(idmap, path, stat, request_mask, query_flags);
1314
1315 return fscrypt_symlink_getattr(path, stat);
1316 }
1317
1318 const struct inode_operations f2fs_encrypted_symlink_inode_operations = {
1319 .get_link = f2fs_encrypted_get_link,
1320 .getattr = f2fs_encrypted_symlink_getattr,
1321 .setattr = f2fs_setattr,
1322 .listxattr = f2fs_listxattr,
1323 };
1324
1325 const struct inode_operations f2fs_dir_inode_operations = {
1326 .create = f2fs_create,
1327 .lookup = f2fs_lookup,
1328 .link = f2fs_link,
1329 .unlink = f2fs_unlink,
1330 .symlink = f2fs_symlink,
1331 .mkdir = f2fs_mkdir,
1332 .rmdir = f2fs_rmdir,
1333 .mknod = f2fs_mknod,
1334 .rename = f2fs_rename2,
1335 .tmpfile = f2fs_tmpfile,
1336 .getattr = f2fs_getattr,
1337 .setattr = f2fs_setattr,
1338 .get_inode_acl = f2fs_get_acl,
1339 .set_acl = f2fs_set_acl,
1340 .listxattr = f2fs_listxattr,
1341 .fiemap = f2fs_fiemap,
1342 .fileattr_get = f2fs_fileattr_get,
1343 .fileattr_set = f2fs_fileattr_set,
1344 };
1345
1346 const struct inode_operations f2fs_symlink_inode_operations = {
1347 .get_link = f2fs_get_link,
1348 .getattr = f2fs_getattr,
1349 .setattr = f2fs_setattr,
1350 .listxattr = f2fs_listxattr,
1351 };
1352
1353 const struct inode_operations f2fs_special_inode_operations = {
1354 .getattr = f2fs_getattr,
1355 .setattr = f2fs_setattr,
1356 .get_inode_acl = f2fs_get_acl,
1357 .set_acl = f2fs_set_acl,
1358 .listxattr = f2fs_listxattr,
1359 };
1360