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d2500652 RK |
1 | /* |
2 | * namei.c - NILFS pathname lookup operations. | |
3 | * | |
4 | * Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | * | |
20 | * Modified for NILFS by Amagai Yoshiji <amagai@osrg.net>, | |
21 | * Ryusuke Konishi <ryusuke@osrg.net> | |
22 | */ | |
23 | /* | |
24 | * linux/fs/ext2/namei.c | |
25 | * | |
26 | * Copyright (C) 1992, 1993, 1994, 1995 | |
27 | * Remy Card (card@masi.ibp.fr) | |
28 | * Laboratoire MASI - Institut Blaise Pascal | |
29 | * Universite Pierre et Marie Curie (Paris VI) | |
30 | * | |
31 | * from | |
32 | * | |
33 | * linux/fs/minix/namei.c | |
34 | * | |
35 | * Copyright (C) 1991, 1992 Linus Torvalds | |
36 | * | |
37 | * Big-endian to little-endian byte-swapping/bitmaps by | |
38 | * David S. Miller (davem@caip.rutgers.edu), 1995 | |
39 | */ | |
40 | ||
41 | #include <linux/pagemap.h> | |
42 | #include "nilfs.h" | |
8e656fd5 | 43 | #include "export.h" |
d2500652 | 44 | |
8e656fd5 RK |
45 | #define NILFS_FID_SIZE_NON_CONNECTABLE \ |
46 | (offsetof(struct nilfs_fid, parent_gen) / 4) | |
47 | #define NILFS_FID_SIZE_CONNECTABLE (sizeof(struct nilfs_fid) / 4) | |
d2500652 RK |
48 | |
49 | static inline int nilfs_add_nondir(struct dentry *dentry, struct inode *inode) | |
50 | { | |
51 | int err = nilfs_add_link(dentry, inode); | |
52 | if (!err) { | |
53 | d_instantiate(dentry, inode); | |
705304a8 | 54 | unlock_new_inode(inode); |
d2500652 RK |
55 | return 0; |
56 | } | |
57 | inode_dec_link_count(inode); | |
705304a8 | 58 | unlock_new_inode(inode); |
d2500652 RK |
59 | iput(inode); |
60 | return err; | |
61 | } | |
62 | ||
63 | /* | |
64 | * Methods themselves. | |
65 | */ | |
66 | ||
67 | static struct dentry * | |
00cd8dd3 | 68 | nilfs_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags) |
d2500652 RK |
69 | { |
70 | struct inode *inode; | |
71 | ino_t ino; | |
72 | ||
73 | if (dentry->d_name.len > NILFS_NAME_LEN) | |
74 | return ERR_PTR(-ENAMETOOLONG); | |
75 | ||
0319003d | 76 | ino = nilfs_inode_by_name(dir, &dentry->d_name); |
a9049376 | 77 | inode = ino ? nilfs_iget(dir->i_sb, NILFS_I(dir)->i_root, ino) : NULL; |
d2500652 RK |
78 | return d_splice_alias(inode, dentry); |
79 | } | |
80 | ||
d2500652 RK |
81 | /* |
82 | * By the time this is called, we already have created | |
83 | * the directory cache entry for the new file, but it | |
84 | * is so far negative - it has no inode. | |
85 | * | |
86 | * If the create succeeds, we fill in the inode information | |
87 | * with d_instantiate(). | |
88 | */ | |
4acdaf27 | 89 | static int nilfs_create(struct inode *dir, struct dentry *dentry, umode_t mode, |
ebfc3b49 | 90 | bool excl) |
d2500652 RK |
91 | { |
92 | struct inode *inode; | |
93 | struct nilfs_transaction_info ti; | |
47420c79 | 94 | int err; |
d2500652 RK |
95 | |
96 | err = nilfs_transaction_begin(dir->i_sb, &ti, 1); | |
97 | if (err) | |
98 | return err; | |
99 | inode = nilfs_new_inode(dir, mode); | |
100 | err = PTR_ERR(inode); | |
101 | if (!IS_ERR(inode)) { | |
102 | inode->i_op = &nilfs_file_inode_operations; | |
103 | inode->i_fop = &nilfs_file_operations; | |
104 | inode->i_mapping->a_ops = &nilfs_aops; | |
abdb318b | 105 | nilfs_mark_inode_dirty(inode); |
d2500652 RK |
106 | err = nilfs_add_nondir(dentry, inode); |
107 | } | |
47420c79 RK |
108 | if (!err) |
109 | err = nilfs_transaction_commit(dir->i_sb); | |
110 | else | |
111 | nilfs_transaction_abort(dir->i_sb); | |
112 | ||
113 | return err; | |
d2500652 RK |
114 | } |
115 | ||
116 | static int | |
1a67aafb | 117 | nilfs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t rdev) |
d2500652 RK |
118 | { |
119 | struct inode *inode; | |
120 | struct nilfs_transaction_info ti; | |
47420c79 | 121 | int err; |
d2500652 RK |
122 | |
123 | if (!new_valid_dev(rdev)) | |
124 | return -EINVAL; | |
125 | ||
126 | err = nilfs_transaction_begin(dir->i_sb, &ti, 1); | |
127 | if (err) | |
128 | return err; | |
129 | inode = nilfs_new_inode(dir, mode); | |
130 | err = PTR_ERR(inode); | |
131 | if (!IS_ERR(inode)) { | |
132 | init_special_inode(inode, inode->i_mode, rdev); | |
abdb318b | 133 | nilfs_mark_inode_dirty(inode); |
d2500652 RK |
134 | err = nilfs_add_nondir(dentry, inode); |
135 | } | |
47420c79 RK |
136 | if (!err) |
137 | err = nilfs_transaction_commit(dir->i_sb); | |
138 | else | |
139 | nilfs_transaction_abort(dir->i_sb); | |
140 | ||
141 | return err; | |
d2500652 RK |
142 | } |
143 | ||
144 | static int nilfs_symlink(struct inode *dir, struct dentry *dentry, | |
145 | const char *symname) | |
146 | { | |
147 | struct nilfs_transaction_info ti; | |
148 | struct super_block *sb = dir->i_sb; | |
149 | unsigned l = strlen(symname)+1; | |
150 | struct inode *inode; | |
47420c79 | 151 | int err; |
d2500652 RK |
152 | |
153 | if (l > sb->s_blocksize) | |
154 | return -ENAMETOOLONG; | |
155 | ||
156 | err = nilfs_transaction_begin(dir->i_sb, &ti, 1); | |
157 | if (err) | |
158 | return err; | |
159 | ||
160 | inode = nilfs_new_inode(dir, S_IFLNK | S_IRWXUGO); | |
161 | err = PTR_ERR(inode); | |
162 | if (IS_ERR(inode)) | |
163 | goto out; | |
164 | ||
165 | /* slow symlink */ | |
166 | inode->i_op = &nilfs_symlink_inode_operations; | |
167 | inode->i_mapping->a_ops = &nilfs_aops; | |
168 | err = page_symlink(inode, symname, l); | |
169 | if (err) | |
170 | goto out_fail; | |
171 | ||
172 | /* mark_inode_dirty(inode); */ | |
9ca941d4 | 173 | /* page_symlink() do this */ |
d2500652 RK |
174 | |
175 | err = nilfs_add_nondir(dentry, inode); | |
176 | out: | |
47420c79 RK |
177 | if (!err) |
178 | err = nilfs_transaction_commit(dir->i_sb); | |
179 | else | |
180 | nilfs_transaction_abort(dir->i_sb); | |
181 | ||
182 | return err; | |
d2500652 RK |
183 | |
184 | out_fail: | |
565de406 | 185 | drop_nlink(inode); |
abdb318b | 186 | nilfs_mark_inode_dirty(inode); |
705304a8 | 187 | unlock_new_inode(inode); |
d2500652 RK |
188 | iput(inode); |
189 | goto out; | |
190 | } | |
191 | ||
192 | static int nilfs_link(struct dentry *old_dentry, struct inode *dir, | |
193 | struct dentry *dentry) | |
194 | { | |
195 | struct inode *inode = old_dentry->d_inode; | |
196 | struct nilfs_transaction_info ti; | |
47420c79 | 197 | int err; |
d2500652 | 198 | |
d2500652 RK |
199 | err = nilfs_transaction_begin(dir->i_sb, &ti, 1); |
200 | if (err) | |
201 | return err; | |
202 | ||
203 | inode->i_ctime = CURRENT_TIME; | |
204 | inode_inc_link_count(inode); | |
7de9c6ee | 205 | ihold(inode); |
d2500652 | 206 | |
705304a8 RK |
207 | err = nilfs_add_link(dentry, inode); |
208 | if (!err) { | |
209 | d_instantiate(dentry, inode); | |
47420c79 | 210 | err = nilfs_transaction_commit(dir->i_sb); |
705304a8 RK |
211 | } else { |
212 | inode_dec_link_count(inode); | |
213 | iput(inode); | |
47420c79 | 214 | nilfs_transaction_abort(dir->i_sb); |
705304a8 | 215 | } |
47420c79 RK |
216 | |
217 | return err; | |
d2500652 RK |
218 | } |
219 | ||
18bb1db3 | 220 | static int nilfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) |
d2500652 RK |
221 | { |
222 | struct inode *inode; | |
223 | struct nilfs_transaction_info ti; | |
47420c79 | 224 | int err; |
d2500652 | 225 | |
d2500652 RK |
226 | err = nilfs_transaction_begin(dir->i_sb, &ti, 1); |
227 | if (err) | |
228 | return err; | |
229 | ||
565de406 | 230 | inc_nlink(dir); |
d2500652 RK |
231 | |
232 | inode = nilfs_new_inode(dir, S_IFDIR | mode); | |
233 | err = PTR_ERR(inode); | |
234 | if (IS_ERR(inode)) | |
235 | goto out_dir; | |
236 | ||
237 | inode->i_op = &nilfs_dir_inode_operations; | |
238 | inode->i_fop = &nilfs_dir_operations; | |
239 | inode->i_mapping->a_ops = &nilfs_aops; | |
240 | ||
565de406 | 241 | inc_nlink(inode); |
d2500652 RK |
242 | |
243 | err = nilfs_make_empty(inode, dir); | |
244 | if (err) | |
245 | goto out_fail; | |
246 | ||
247 | err = nilfs_add_link(dentry, inode); | |
248 | if (err) | |
249 | goto out_fail; | |
250 | ||
abdb318b | 251 | nilfs_mark_inode_dirty(inode); |
d2500652 | 252 | d_instantiate(dentry, inode); |
705304a8 | 253 | unlock_new_inode(inode); |
d2500652 | 254 | out: |
47420c79 RK |
255 | if (!err) |
256 | err = nilfs_transaction_commit(dir->i_sb); | |
257 | else | |
258 | nilfs_transaction_abort(dir->i_sb); | |
259 | ||
260 | return err; | |
d2500652 RK |
261 | |
262 | out_fail: | |
565de406 | 263 | drop_nlink(inode); |
565de406 | 264 | drop_nlink(inode); |
abdb318b | 265 | nilfs_mark_inode_dirty(inode); |
705304a8 | 266 | unlock_new_inode(inode); |
d2500652 RK |
267 | iput(inode); |
268 | out_dir: | |
565de406 | 269 | drop_nlink(dir); |
abdb318b | 270 | nilfs_mark_inode_dirty(dir); |
d2500652 RK |
271 | goto out; |
272 | } | |
273 | ||
4cd76c3c | 274 | static int nilfs_do_unlink(struct inode *dir, struct dentry *dentry) |
d2500652 RK |
275 | { |
276 | struct inode *inode; | |
277 | struct nilfs_dir_entry *de; | |
278 | struct page *page; | |
47420c79 | 279 | int err; |
d2500652 | 280 | |
d2500652 | 281 | err = -ENOENT; |
0319003d | 282 | de = nilfs_find_entry(dir, &dentry->d_name, &page); |
d2500652 RK |
283 | if (!de) |
284 | goto out; | |
285 | ||
286 | inode = dentry->d_inode; | |
287 | err = -EIO; | |
288 | if (le64_to_cpu(de->inode) != inode->i_ino) | |
289 | goto out; | |
290 | ||
291 | if (!inode->i_nlink) { | |
292 | nilfs_warning(inode->i_sb, __func__, | |
293 | "deleting nonexistent file (%lu), %d\n", | |
294 | inode->i_ino, inode->i_nlink); | |
bfe86848 | 295 | set_nlink(inode, 1); |
d2500652 RK |
296 | } |
297 | err = nilfs_delete_entry(de, page); | |
298 | if (err) | |
299 | goto out; | |
300 | ||
301 | inode->i_ctime = dir->i_ctime; | |
565de406 | 302 | drop_nlink(inode); |
d2500652 RK |
303 | err = 0; |
304 | out: | |
4cd76c3c JS |
305 | return err; |
306 | } | |
307 | ||
308 | static int nilfs_unlink(struct inode *dir, struct dentry *dentry) | |
309 | { | |
310 | struct nilfs_transaction_info ti; | |
311 | int err; | |
312 | ||
313 | err = nilfs_transaction_begin(dir->i_sb, &ti, 0); | |
314 | if (err) | |
315 | return err; | |
316 | ||
317 | err = nilfs_do_unlink(dir, dentry); | |
318 | ||
319 | if (!err) { | |
abdb318b JS |
320 | nilfs_mark_inode_dirty(dir); |
321 | nilfs_mark_inode_dirty(dentry->d_inode); | |
47420c79 | 322 | err = nilfs_transaction_commit(dir->i_sb); |
4cd76c3c | 323 | } else |
47420c79 RK |
324 | nilfs_transaction_abort(dir->i_sb); |
325 | ||
326 | return err; | |
d2500652 RK |
327 | } |
328 | ||
329 | static int nilfs_rmdir(struct inode *dir, struct dentry *dentry) | |
330 | { | |
331 | struct inode *inode = dentry->d_inode; | |
332 | struct nilfs_transaction_info ti; | |
47420c79 | 333 | int err; |
d2500652 RK |
334 | |
335 | err = nilfs_transaction_begin(dir->i_sb, &ti, 0); | |
336 | if (err) | |
337 | return err; | |
338 | ||
339 | err = -ENOTEMPTY; | |
340 | if (nilfs_empty_dir(inode)) { | |
4cd76c3c | 341 | err = nilfs_do_unlink(dir, dentry); |
d2500652 RK |
342 | if (!err) { |
343 | inode->i_size = 0; | |
565de406 | 344 | drop_nlink(inode); |
abdb318b | 345 | nilfs_mark_inode_dirty(inode); |
565de406 | 346 | drop_nlink(dir); |
abdb318b | 347 | nilfs_mark_inode_dirty(dir); |
d2500652 RK |
348 | } |
349 | } | |
47420c79 RK |
350 | if (!err) |
351 | err = nilfs_transaction_commit(dir->i_sb); | |
352 | else | |
353 | nilfs_transaction_abort(dir->i_sb); | |
354 | ||
355 | return err; | |
d2500652 RK |
356 | } |
357 | ||
358 | static int nilfs_rename(struct inode *old_dir, struct dentry *old_dentry, | |
359 | struct inode *new_dir, struct dentry *new_dentry) | |
360 | { | |
361 | struct inode *old_inode = old_dentry->d_inode; | |
362 | struct inode *new_inode = new_dentry->d_inode; | |
363 | struct page *dir_page = NULL; | |
364 | struct nilfs_dir_entry *dir_de = NULL; | |
365 | struct page *old_page; | |
366 | struct nilfs_dir_entry *old_de; | |
367 | struct nilfs_transaction_info ti; | |
368 | int err; | |
369 | ||
370 | err = nilfs_transaction_begin(old_dir->i_sb, &ti, 1); | |
371 | if (unlikely(err)) | |
372 | return err; | |
373 | ||
374 | err = -ENOENT; | |
0319003d | 375 | old_de = nilfs_find_entry(old_dir, &old_dentry->d_name, &old_page); |
d2500652 RK |
376 | if (!old_de) |
377 | goto out; | |
378 | ||
379 | if (S_ISDIR(old_inode->i_mode)) { | |
380 | err = -EIO; | |
381 | dir_de = nilfs_dotdot(old_inode, &dir_page); | |
382 | if (!dir_de) | |
383 | goto out_old; | |
384 | } | |
385 | ||
386 | if (new_inode) { | |
387 | struct page *new_page; | |
388 | struct nilfs_dir_entry *new_de; | |
389 | ||
390 | err = -ENOTEMPTY; | |
391 | if (dir_de && !nilfs_empty_dir(new_inode)) | |
392 | goto out_dir; | |
393 | ||
394 | err = -ENOENT; | |
0319003d | 395 | new_de = nilfs_find_entry(new_dir, &new_dentry->d_name, &new_page); |
d2500652 RK |
396 | if (!new_de) |
397 | goto out_dir; | |
d2500652 | 398 | nilfs_set_link(new_dir, new_de, new_page, old_inode); |
abdb318b | 399 | nilfs_mark_inode_dirty(new_dir); |
d2500652 RK |
400 | new_inode->i_ctime = CURRENT_TIME; |
401 | if (dir_de) | |
402 | drop_nlink(new_inode); | |
565de406 | 403 | drop_nlink(new_inode); |
abdb318b | 404 | nilfs_mark_inode_dirty(new_inode); |
d2500652 | 405 | } else { |
d2500652 | 406 | err = nilfs_add_link(new_dentry, old_inode); |
30eb43d3 | 407 | if (err) |
d2500652 | 408 | goto out_dir; |
565de406 JS |
409 | if (dir_de) { |
410 | inc_nlink(new_dir); | |
abdb318b | 411 | nilfs_mark_inode_dirty(new_dir); |
565de406 | 412 | } |
d2500652 RK |
413 | } |
414 | ||
415 | /* | |
416 | * Like most other Unix systems, set the ctime for inodes on a | |
417 | * rename. | |
d2500652 RK |
418 | */ |
419 | old_inode->i_ctime = CURRENT_TIME; | |
420 | ||
421 | nilfs_delete_entry(old_de, old_page); | |
d2500652 RK |
422 | |
423 | if (dir_de) { | |
424 | nilfs_set_link(old_inode, dir_de, dir_page, new_dir); | |
565de406 | 425 | drop_nlink(old_dir); |
d2500652 | 426 | } |
abdb318b JS |
427 | nilfs_mark_inode_dirty(old_dir); |
428 | nilfs_mark_inode_dirty(old_inode); | |
d2500652 | 429 | |
47420c79 | 430 | err = nilfs_transaction_commit(old_dir->i_sb); |
d2500652 RK |
431 | return err; |
432 | ||
433 | out_dir: | |
434 | if (dir_de) { | |
435 | kunmap(dir_page); | |
436 | page_cache_release(dir_page); | |
437 | } | |
438 | out_old: | |
439 | kunmap(old_page); | |
440 | page_cache_release(old_page); | |
441 | out: | |
47420c79 | 442 | nilfs_transaction_abort(old_dir->i_sb); |
d2500652 RK |
443 | return err; |
444 | } | |
445 | ||
8e656fd5 RK |
446 | /* |
447 | * Export operations | |
448 | */ | |
449 | static struct dentry *nilfs_get_parent(struct dentry *child) | |
450 | { | |
451 | unsigned long ino; | |
452 | struct inode *inode; | |
26fe5750 | 453 | struct qstr dotdot = QSTR_INIT("..", 2); |
8e656fd5 RK |
454 | struct nilfs_root *root; |
455 | ||
456 | ino = nilfs_inode_by_name(child->d_inode, &dotdot); | |
457 | if (!ino) | |
458 | return ERR_PTR(-ENOENT); | |
459 | ||
460 | root = NILFS_I(child->d_inode)->i_root; | |
461 | ||
462 | inode = nilfs_iget(child->d_inode->i_sb, root, ino); | |
463 | if (IS_ERR(inode)) | |
464 | return ERR_CAST(inode); | |
465 | ||
466 | return d_obtain_alias(inode); | |
467 | } | |
468 | ||
469 | static struct dentry *nilfs_get_dentry(struct super_block *sb, u64 cno, | |
470 | u64 ino, u32 gen) | |
471 | { | |
472 | struct nilfs_root *root; | |
473 | struct inode *inode; | |
474 | ||
475 | if (ino < NILFS_FIRST_INO(sb) && ino != NILFS_ROOT_INO) | |
476 | return ERR_PTR(-ESTALE); | |
477 | ||
e3154e97 | 478 | root = nilfs_lookup_root(sb->s_fs_info, cno); |
8e656fd5 RK |
479 | if (!root) |
480 | return ERR_PTR(-ESTALE); | |
481 | ||
482 | inode = nilfs_iget(sb, root, ino); | |
483 | nilfs_put_root(root); | |
484 | ||
485 | if (IS_ERR(inode)) | |
486 | return ERR_CAST(inode); | |
487 | if (gen && inode->i_generation != gen) { | |
488 | iput(inode); | |
489 | return ERR_PTR(-ESTALE); | |
490 | } | |
491 | return d_obtain_alias(inode); | |
492 | } | |
493 | ||
494 | static struct dentry *nilfs_fh_to_dentry(struct super_block *sb, struct fid *fh, | |
495 | int fh_len, int fh_type) | |
496 | { | |
497 | struct nilfs_fid *fid = (struct nilfs_fid *)fh; | |
498 | ||
499 | if ((fh_len != NILFS_FID_SIZE_NON_CONNECTABLE && | |
500 | fh_len != NILFS_FID_SIZE_CONNECTABLE) || | |
501 | (fh_type != FILEID_NILFS_WITH_PARENT && | |
502 | fh_type != FILEID_NILFS_WITHOUT_PARENT)) | |
503 | return NULL; | |
504 | ||
505 | return nilfs_get_dentry(sb, fid->cno, fid->ino, fid->gen); | |
506 | } | |
507 | ||
508 | static struct dentry *nilfs_fh_to_parent(struct super_block *sb, struct fid *fh, | |
509 | int fh_len, int fh_type) | |
510 | { | |
511 | struct nilfs_fid *fid = (struct nilfs_fid *)fh; | |
512 | ||
513 | if (fh_len != NILFS_FID_SIZE_CONNECTABLE || | |
514 | fh_type != FILEID_NILFS_WITH_PARENT) | |
515 | return NULL; | |
516 | ||
517 | return nilfs_get_dentry(sb, fid->cno, fid->parent_ino, fid->parent_gen); | |
518 | } | |
519 | ||
b0b0382b AV |
520 | static int nilfs_encode_fh(struct inode *inode, __u32 *fh, int *lenp, |
521 | struct inode *parent) | |
8e656fd5 RK |
522 | { |
523 | struct nilfs_fid *fid = (struct nilfs_fid *)fh; | |
8e656fd5 RK |
524 | struct nilfs_root *root = NILFS_I(inode)->i_root; |
525 | int type; | |
526 | ||
b0b0382b AV |
527 | if (parent && *lenp < NILFS_FID_SIZE_CONNECTABLE) { |
528 | *lenp = NILFS_FID_SIZE_CONNECTABLE; | |
94e07a75 | 529 | return FILEID_INVALID; |
b0b0382b AV |
530 | } |
531 | if (*lenp < NILFS_FID_SIZE_NON_CONNECTABLE) { | |
532 | *lenp = NILFS_FID_SIZE_NON_CONNECTABLE; | |
94e07a75 | 533 | return FILEID_INVALID; |
b0b0382b | 534 | } |
8e656fd5 RK |
535 | |
536 | fid->cno = root->cno; | |
537 | fid->ino = inode->i_ino; | |
538 | fid->gen = inode->i_generation; | |
539 | ||
b0b0382b | 540 | if (parent) { |
8e656fd5 RK |
541 | fid->parent_ino = parent->i_ino; |
542 | fid->parent_gen = parent->i_generation; | |
8e656fd5 RK |
543 | type = FILEID_NILFS_WITH_PARENT; |
544 | *lenp = NILFS_FID_SIZE_CONNECTABLE; | |
545 | } else { | |
546 | type = FILEID_NILFS_WITHOUT_PARENT; | |
547 | *lenp = NILFS_FID_SIZE_NON_CONNECTABLE; | |
548 | } | |
549 | ||
550 | return type; | |
551 | } | |
552 | ||
6e1d5dcc | 553 | const struct inode_operations nilfs_dir_inode_operations = { |
d2500652 RK |
554 | .create = nilfs_create, |
555 | .lookup = nilfs_lookup, | |
556 | .link = nilfs_link, | |
557 | .unlink = nilfs_unlink, | |
558 | .symlink = nilfs_symlink, | |
559 | .mkdir = nilfs_mkdir, | |
560 | .rmdir = nilfs_rmdir, | |
561 | .mknod = nilfs_mknod, | |
562 | .rename = nilfs_rename, | |
563 | .setattr = nilfs_setattr, | |
564 | .permission = nilfs_permission, | |
622daaff | 565 | .fiemap = nilfs_fiemap, |
d2500652 RK |
566 | }; |
567 | ||
6e1d5dcc | 568 | const struct inode_operations nilfs_special_inode_operations = { |
d2500652 RK |
569 | .setattr = nilfs_setattr, |
570 | .permission = nilfs_permission, | |
571 | }; | |
572 | ||
6e1d5dcc | 573 | const struct inode_operations nilfs_symlink_inode_operations = { |
d2500652 RK |
574 | .readlink = generic_readlink, |
575 | .follow_link = page_follow_link_light, | |
576 | .put_link = page_put_link, | |
dc3d3b81 | 577 | .permission = nilfs_permission, |
d2500652 | 578 | }; |
8e656fd5 RK |
579 | |
580 | const struct export_operations nilfs_export_ops = { | |
581 | .encode_fh = nilfs_encode_fh, | |
582 | .fh_to_dentry = nilfs_fh_to_dentry, | |
583 | .fh_to_parent = nilfs_fh_to_parent, | |
584 | .get_parent = nilfs_get_parent, | |
585 | }; |