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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); | |
54 | return 0; | |
55 | } | |
56 | inode_dec_link_count(inode); | |
57 | iput(inode); | |
58 | return err; | |
59 | } | |
60 | ||
61 | /* | |
62 | * Methods themselves. | |
63 | */ | |
64 | ||
65 | static struct dentry * | |
66 | nilfs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd) | |
67 | { | |
68 | struct inode *inode; | |
69 | ino_t ino; | |
70 | ||
71 | if (dentry->d_name.len > NILFS_NAME_LEN) | |
72 | return ERR_PTR(-ENAMETOOLONG); | |
73 | ||
0319003d | 74 | ino = nilfs_inode_by_name(dir, &dentry->d_name); |
d2500652 RK |
75 | inode = NULL; |
76 | if (ino) { | |
4d8d9293 | 77 | inode = nilfs_iget(dir->i_sb, NILFS_I(dir)->i_root, ino); |
d2500652 RK |
78 | if (IS_ERR(inode)) |
79 | return ERR_CAST(inode); | |
80 | } | |
81 | return d_splice_alias(inode, dentry); | |
82 | } | |
83 | ||
d2500652 RK |
84 | /* |
85 | * By the time this is called, we already have created | |
86 | * the directory cache entry for the new file, but it | |
87 | * is so far negative - it has no inode. | |
88 | * | |
89 | * If the create succeeds, we fill in the inode information | |
90 | * with d_instantiate(). | |
91 | */ | |
92 | static int nilfs_create(struct inode *dir, struct dentry *dentry, int mode, | |
93 | struct nameidata *nd) | |
94 | { | |
95 | struct inode *inode; | |
96 | struct nilfs_transaction_info ti; | |
47420c79 | 97 | int err; |
d2500652 RK |
98 | |
99 | err = nilfs_transaction_begin(dir->i_sb, &ti, 1); | |
100 | if (err) | |
101 | return err; | |
102 | inode = nilfs_new_inode(dir, mode); | |
103 | err = PTR_ERR(inode); | |
104 | if (!IS_ERR(inode)) { | |
105 | inode->i_op = &nilfs_file_inode_operations; | |
106 | inode->i_fop = &nilfs_file_operations; | |
107 | inode->i_mapping->a_ops = &nilfs_aops; | |
abdb318b | 108 | nilfs_mark_inode_dirty(inode); |
d2500652 RK |
109 | err = nilfs_add_nondir(dentry, inode); |
110 | } | |
47420c79 RK |
111 | if (!err) |
112 | err = nilfs_transaction_commit(dir->i_sb); | |
113 | else | |
114 | nilfs_transaction_abort(dir->i_sb); | |
115 | ||
116 | return err; | |
d2500652 RK |
117 | } |
118 | ||
119 | static int | |
120 | nilfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t rdev) | |
121 | { | |
122 | struct inode *inode; | |
123 | struct nilfs_transaction_info ti; | |
47420c79 | 124 | int err; |
d2500652 RK |
125 | |
126 | if (!new_valid_dev(rdev)) | |
127 | return -EINVAL; | |
128 | ||
129 | err = nilfs_transaction_begin(dir->i_sb, &ti, 1); | |
130 | if (err) | |
131 | return err; | |
132 | inode = nilfs_new_inode(dir, mode); | |
133 | err = PTR_ERR(inode); | |
134 | if (!IS_ERR(inode)) { | |
135 | init_special_inode(inode, inode->i_mode, rdev); | |
abdb318b | 136 | nilfs_mark_inode_dirty(inode); |
d2500652 RK |
137 | err = nilfs_add_nondir(dentry, inode); |
138 | } | |
47420c79 RK |
139 | if (!err) |
140 | err = nilfs_transaction_commit(dir->i_sb); | |
141 | else | |
142 | nilfs_transaction_abort(dir->i_sb); | |
143 | ||
144 | return err; | |
d2500652 RK |
145 | } |
146 | ||
147 | static int nilfs_symlink(struct inode *dir, struct dentry *dentry, | |
148 | const char *symname) | |
149 | { | |
150 | struct nilfs_transaction_info ti; | |
151 | struct super_block *sb = dir->i_sb; | |
152 | unsigned l = strlen(symname)+1; | |
153 | struct inode *inode; | |
47420c79 | 154 | int err; |
d2500652 RK |
155 | |
156 | if (l > sb->s_blocksize) | |
157 | return -ENAMETOOLONG; | |
158 | ||
159 | err = nilfs_transaction_begin(dir->i_sb, &ti, 1); | |
160 | if (err) | |
161 | return err; | |
162 | ||
163 | inode = nilfs_new_inode(dir, S_IFLNK | S_IRWXUGO); | |
164 | err = PTR_ERR(inode); | |
165 | if (IS_ERR(inode)) | |
166 | goto out; | |
167 | ||
168 | /* slow symlink */ | |
169 | inode->i_op = &nilfs_symlink_inode_operations; | |
170 | inode->i_mapping->a_ops = &nilfs_aops; | |
171 | err = page_symlink(inode, symname, l); | |
172 | if (err) | |
173 | goto out_fail; | |
174 | ||
175 | /* mark_inode_dirty(inode); */ | |
9ca941d4 | 176 | /* page_symlink() do this */ |
d2500652 RK |
177 | |
178 | err = nilfs_add_nondir(dentry, inode); | |
179 | out: | |
47420c79 RK |
180 | if (!err) |
181 | err = nilfs_transaction_commit(dir->i_sb); | |
182 | else | |
183 | nilfs_transaction_abort(dir->i_sb); | |
184 | ||
185 | return err; | |
d2500652 RK |
186 | |
187 | out_fail: | |
565de406 | 188 | drop_nlink(inode); |
abdb318b | 189 | nilfs_mark_inode_dirty(inode); |
d2500652 RK |
190 | iput(inode); |
191 | goto out; | |
192 | } | |
193 | ||
194 | static int nilfs_link(struct dentry *old_dentry, struct inode *dir, | |
195 | struct dentry *dentry) | |
196 | { | |
197 | struct inode *inode = old_dentry->d_inode; | |
198 | struct nilfs_transaction_info ti; | |
47420c79 | 199 | int err; |
d2500652 RK |
200 | |
201 | if (inode->i_nlink >= NILFS_LINK_MAX) | |
202 | return -EMLINK; | |
203 | ||
204 | err = nilfs_transaction_begin(dir->i_sb, &ti, 1); | |
205 | if (err) | |
206 | return err; | |
207 | ||
208 | inode->i_ctime = CURRENT_TIME; | |
209 | inode_inc_link_count(inode); | |
7de9c6ee | 210 | ihold(inode); |
d2500652 RK |
211 | |
212 | err = nilfs_add_nondir(dentry, inode); | |
47420c79 RK |
213 | if (!err) |
214 | err = nilfs_transaction_commit(dir->i_sb); | |
215 | else | |
216 | nilfs_transaction_abort(dir->i_sb); | |
217 | ||
218 | return err; | |
d2500652 RK |
219 | } |
220 | ||
221 | static int nilfs_mkdir(struct inode *dir, struct dentry *dentry, int mode) | |
222 | { | |
223 | struct inode *inode; | |
224 | struct nilfs_transaction_info ti; | |
47420c79 | 225 | int err; |
d2500652 RK |
226 | |
227 | if (dir->i_nlink >= NILFS_LINK_MAX) | |
228 | return -EMLINK; | |
229 | ||
230 | err = nilfs_transaction_begin(dir->i_sb, &ti, 1); | |
231 | if (err) | |
232 | return err; | |
233 | ||
565de406 | 234 | inc_nlink(dir); |
d2500652 RK |
235 | |
236 | inode = nilfs_new_inode(dir, S_IFDIR | mode); | |
237 | err = PTR_ERR(inode); | |
238 | if (IS_ERR(inode)) | |
239 | goto out_dir; | |
240 | ||
241 | inode->i_op = &nilfs_dir_inode_operations; | |
242 | inode->i_fop = &nilfs_dir_operations; | |
243 | inode->i_mapping->a_ops = &nilfs_aops; | |
244 | ||
565de406 | 245 | inc_nlink(inode); |
d2500652 RK |
246 | |
247 | err = nilfs_make_empty(inode, dir); | |
248 | if (err) | |
249 | goto out_fail; | |
250 | ||
251 | err = nilfs_add_link(dentry, inode); | |
252 | if (err) | |
253 | goto out_fail; | |
254 | ||
abdb318b | 255 | nilfs_mark_inode_dirty(inode); |
d2500652 RK |
256 | d_instantiate(dentry, inode); |
257 | out: | |
47420c79 RK |
258 | if (!err) |
259 | err = nilfs_transaction_commit(dir->i_sb); | |
260 | else | |
261 | nilfs_transaction_abort(dir->i_sb); | |
262 | ||
263 | return err; | |
d2500652 RK |
264 | |
265 | out_fail: | |
565de406 | 266 | drop_nlink(inode); |
565de406 | 267 | drop_nlink(inode); |
abdb318b | 268 | nilfs_mark_inode_dirty(inode); |
d2500652 RK |
269 | iput(inode); |
270 | out_dir: | |
565de406 | 271 | drop_nlink(dir); |
abdb318b | 272 | nilfs_mark_inode_dirty(dir); |
d2500652 RK |
273 | goto out; |
274 | } | |
275 | ||
4cd76c3c | 276 | static int nilfs_do_unlink(struct inode *dir, struct dentry *dentry) |
d2500652 RK |
277 | { |
278 | struct inode *inode; | |
279 | struct nilfs_dir_entry *de; | |
280 | struct page *page; | |
47420c79 | 281 | int err; |
d2500652 | 282 | |
d2500652 | 283 | err = -ENOENT; |
0319003d | 284 | de = nilfs_find_entry(dir, &dentry->d_name, &page); |
d2500652 RK |
285 | if (!de) |
286 | goto out; | |
287 | ||
288 | inode = dentry->d_inode; | |
289 | err = -EIO; | |
290 | if (le64_to_cpu(de->inode) != inode->i_ino) | |
291 | goto out; | |
292 | ||
293 | if (!inode->i_nlink) { | |
294 | nilfs_warning(inode->i_sb, __func__, | |
295 | "deleting nonexistent file (%lu), %d\n", | |
296 | inode->i_ino, inode->i_nlink); | |
297 | inode->i_nlink = 1; | |
298 | } | |
299 | err = nilfs_delete_entry(de, page); | |
300 | if (err) | |
301 | goto out; | |
302 | ||
303 | inode->i_ctime = dir->i_ctime; | |
565de406 | 304 | drop_nlink(inode); |
d2500652 RK |
305 | err = 0; |
306 | out: | |
4cd76c3c JS |
307 | return err; |
308 | } | |
309 | ||
310 | static int nilfs_unlink(struct inode *dir, struct dentry *dentry) | |
311 | { | |
312 | struct nilfs_transaction_info ti; | |
313 | int err; | |
314 | ||
315 | err = nilfs_transaction_begin(dir->i_sb, &ti, 0); | |
316 | if (err) | |
317 | return err; | |
318 | ||
319 | err = nilfs_do_unlink(dir, dentry); | |
320 | ||
321 | if (!err) { | |
abdb318b JS |
322 | nilfs_mark_inode_dirty(dir); |
323 | nilfs_mark_inode_dirty(dentry->d_inode); | |
47420c79 | 324 | err = nilfs_transaction_commit(dir->i_sb); |
4cd76c3c | 325 | } else |
47420c79 RK |
326 | nilfs_transaction_abort(dir->i_sb); |
327 | ||
328 | return err; | |
d2500652 RK |
329 | } |
330 | ||
331 | static int nilfs_rmdir(struct inode *dir, struct dentry *dentry) | |
332 | { | |
333 | struct inode *inode = dentry->d_inode; | |
334 | struct nilfs_transaction_info ti; | |
47420c79 | 335 | int err; |
d2500652 RK |
336 | |
337 | err = nilfs_transaction_begin(dir->i_sb, &ti, 0); | |
338 | if (err) | |
339 | return err; | |
340 | ||
341 | err = -ENOTEMPTY; | |
342 | if (nilfs_empty_dir(inode)) { | |
4cd76c3c | 343 | err = nilfs_do_unlink(dir, dentry); |
d2500652 RK |
344 | if (!err) { |
345 | inode->i_size = 0; | |
565de406 | 346 | drop_nlink(inode); |
abdb318b | 347 | nilfs_mark_inode_dirty(inode); |
565de406 | 348 | drop_nlink(dir); |
abdb318b | 349 | nilfs_mark_inode_dirty(dir); |
d2500652 RK |
350 | } |
351 | } | |
47420c79 RK |
352 | if (!err) |
353 | err = nilfs_transaction_commit(dir->i_sb); | |
354 | else | |
355 | nilfs_transaction_abort(dir->i_sb); | |
356 | ||
357 | return err; | |
d2500652 RK |
358 | } |
359 | ||
360 | static int nilfs_rename(struct inode *old_dir, struct dentry *old_dentry, | |
361 | struct inode *new_dir, struct dentry *new_dentry) | |
362 | { | |
363 | struct inode *old_inode = old_dentry->d_inode; | |
364 | struct inode *new_inode = new_dentry->d_inode; | |
365 | struct page *dir_page = NULL; | |
366 | struct nilfs_dir_entry *dir_de = NULL; | |
367 | struct page *old_page; | |
368 | struct nilfs_dir_entry *old_de; | |
369 | struct nilfs_transaction_info ti; | |
370 | int err; | |
371 | ||
372 | err = nilfs_transaction_begin(old_dir->i_sb, &ti, 1); | |
373 | if (unlikely(err)) | |
374 | return err; | |
375 | ||
376 | err = -ENOENT; | |
0319003d | 377 | old_de = nilfs_find_entry(old_dir, &old_dentry->d_name, &old_page); |
d2500652 RK |
378 | if (!old_de) |
379 | goto out; | |
380 | ||
381 | if (S_ISDIR(old_inode->i_mode)) { | |
382 | err = -EIO; | |
383 | dir_de = nilfs_dotdot(old_inode, &dir_page); | |
384 | if (!dir_de) | |
385 | goto out_old; | |
386 | } | |
387 | ||
388 | if (new_inode) { | |
389 | struct page *new_page; | |
390 | struct nilfs_dir_entry *new_de; | |
391 | ||
392 | err = -ENOTEMPTY; | |
393 | if (dir_de && !nilfs_empty_dir(new_inode)) | |
394 | goto out_dir; | |
395 | ||
396 | err = -ENOENT; | |
0319003d | 397 | new_de = nilfs_find_entry(new_dir, &new_dentry->d_name, &new_page); |
d2500652 RK |
398 | if (!new_de) |
399 | goto out_dir; | |
565de406 | 400 | inc_nlink(old_inode); |
d2500652 | 401 | nilfs_set_link(new_dir, new_de, new_page, old_inode); |
abdb318b | 402 | nilfs_mark_inode_dirty(new_dir); |
d2500652 RK |
403 | new_inode->i_ctime = CURRENT_TIME; |
404 | if (dir_de) | |
405 | drop_nlink(new_inode); | |
565de406 | 406 | drop_nlink(new_inode); |
abdb318b | 407 | nilfs_mark_inode_dirty(new_inode); |
d2500652 RK |
408 | } else { |
409 | if (dir_de) { | |
410 | err = -EMLINK; | |
411 | if (new_dir->i_nlink >= NILFS_LINK_MAX) | |
412 | goto out_dir; | |
413 | } | |
565de406 | 414 | inc_nlink(old_inode); |
d2500652 RK |
415 | err = nilfs_add_link(new_dentry, old_inode); |
416 | if (err) { | |
565de406 | 417 | drop_nlink(old_inode); |
abdb318b | 418 | nilfs_mark_inode_dirty(old_inode); |
d2500652 RK |
419 | goto out_dir; |
420 | } | |
565de406 JS |
421 | if (dir_de) { |
422 | inc_nlink(new_dir); | |
abdb318b | 423 | nilfs_mark_inode_dirty(new_dir); |
565de406 | 424 | } |
d2500652 RK |
425 | } |
426 | ||
427 | /* | |
428 | * Like most other Unix systems, set the ctime for inodes on a | |
429 | * rename. | |
d2500652 RK |
430 | */ |
431 | old_inode->i_ctime = CURRENT_TIME; | |
432 | ||
433 | nilfs_delete_entry(old_de, old_page); | |
43f8bc26 | 434 | drop_nlink(old_inode); |
d2500652 RK |
435 | |
436 | if (dir_de) { | |
437 | nilfs_set_link(old_inode, dir_de, dir_page, new_dir); | |
565de406 | 438 | drop_nlink(old_dir); |
d2500652 | 439 | } |
abdb318b JS |
440 | nilfs_mark_inode_dirty(old_dir); |
441 | nilfs_mark_inode_dirty(old_inode); | |
d2500652 | 442 | |
47420c79 | 443 | err = nilfs_transaction_commit(old_dir->i_sb); |
d2500652 RK |
444 | return err; |
445 | ||
446 | out_dir: | |
447 | if (dir_de) { | |
448 | kunmap(dir_page); | |
449 | page_cache_release(dir_page); | |
450 | } | |
451 | out_old: | |
452 | kunmap(old_page); | |
453 | page_cache_release(old_page); | |
454 | out: | |
47420c79 | 455 | nilfs_transaction_abort(old_dir->i_sb); |
d2500652 RK |
456 | return err; |
457 | } | |
458 | ||
8e656fd5 RK |
459 | /* |
460 | * Export operations | |
461 | */ | |
462 | static struct dentry *nilfs_get_parent(struct dentry *child) | |
463 | { | |
464 | unsigned long ino; | |
465 | struct inode *inode; | |
466 | struct qstr dotdot = {.name = "..", .len = 2}; | |
467 | struct nilfs_root *root; | |
468 | ||
469 | ino = nilfs_inode_by_name(child->d_inode, &dotdot); | |
470 | if (!ino) | |
471 | return ERR_PTR(-ENOENT); | |
472 | ||
473 | root = NILFS_I(child->d_inode)->i_root; | |
474 | ||
475 | inode = nilfs_iget(child->d_inode->i_sb, root, ino); | |
476 | if (IS_ERR(inode)) | |
477 | return ERR_CAST(inode); | |
478 | ||
479 | return d_obtain_alias(inode); | |
480 | } | |
481 | ||
482 | static struct dentry *nilfs_get_dentry(struct super_block *sb, u64 cno, | |
483 | u64 ino, u32 gen) | |
484 | { | |
485 | struct nilfs_root *root; | |
486 | struct inode *inode; | |
487 | ||
488 | if (ino < NILFS_FIRST_INO(sb) && ino != NILFS_ROOT_INO) | |
489 | return ERR_PTR(-ESTALE); | |
490 | ||
491 | root = nilfs_lookup_root(NILFS_SB(sb)->s_nilfs, cno); | |
492 | if (!root) | |
493 | return ERR_PTR(-ESTALE); | |
494 | ||
495 | inode = nilfs_iget(sb, root, ino); | |
496 | nilfs_put_root(root); | |
497 | ||
498 | if (IS_ERR(inode)) | |
499 | return ERR_CAST(inode); | |
500 | if (gen && inode->i_generation != gen) { | |
501 | iput(inode); | |
502 | return ERR_PTR(-ESTALE); | |
503 | } | |
504 | return d_obtain_alias(inode); | |
505 | } | |
506 | ||
507 | static struct dentry *nilfs_fh_to_dentry(struct super_block *sb, struct fid *fh, | |
508 | int fh_len, int fh_type) | |
509 | { | |
510 | struct nilfs_fid *fid = (struct nilfs_fid *)fh; | |
511 | ||
512 | if ((fh_len != NILFS_FID_SIZE_NON_CONNECTABLE && | |
513 | fh_len != NILFS_FID_SIZE_CONNECTABLE) || | |
514 | (fh_type != FILEID_NILFS_WITH_PARENT && | |
515 | fh_type != FILEID_NILFS_WITHOUT_PARENT)) | |
516 | return NULL; | |
517 | ||
518 | return nilfs_get_dentry(sb, fid->cno, fid->ino, fid->gen); | |
519 | } | |
520 | ||
521 | static struct dentry *nilfs_fh_to_parent(struct super_block *sb, struct fid *fh, | |
522 | int fh_len, int fh_type) | |
523 | { | |
524 | struct nilfs_fid *fid = (struct nilfs_fid *)fh; | |
525 | ||
526 | if (fh_len != NILFS_FID_SIZE_CONNECTABLE || | |
527 | fh_type != FILEID_NILFS_WITH_PARENT) | |
528 | return NULL; | |
529 | ||
530 | return nilfs_get_dentry(sb, fid->cno, fid->parent_ino, fid->parent_gen); | |
531 | } | |
532 | ||
533 | static int nilfs_encode_fh(struct dentry *dentry, __u32 *fh, int *lenp, | |
534 | int connectable) | |
535 | { | |
536 | struct nilfs_fid *fid = (struct nilfs_fid *)fh; | |
537 | struct inode *inode = dentry->d_inode; | |
538 | struct nilfs_root *root = NILFS_I(inode)->i_root; | |
539 | int type; | |
540 | ||
541 | if (*lenp < NILFS_FID_SIZE_NON_CONNECTABLE || | |
542 | (connectable && *lenp < NILFS_FID_SIZE_CONNECTABLE)) | |
543 | return 255; | |
544 | ||
545 | fid->cno = root->cno; | |
546 | fid->ino = inode->i_ino; | |
547 | fid->gen = inode->i_generation; | |
548 | ||
549 | if (connectable && !S_ISDIR(inode->i_mode)) { | |
550 | struct inode *parent; | |
551 | ||
552 | spin_lock(&dentry->d_lock); | |
553 | parent = dentry->d_parent->d_inode; | |
554 | fid->parent_ino = parent->i_ino; | |
555 | fid->parent_gen = parent->i_generation; | |
556 | spin_unlock(&dentry->d_lock); | |
557 | ||
558 | type = FILEID_NILFS_WITH_PARENT; | |
559 | *lenp = NILFS_FID_SIZE_CONNECTABLE; | |
560 | } else { | |
561 | type = FILEID_NILFS_WITHOUT_PARENT; | |
562 | *lenp = NILFS_FID_SIZE_NON_CONNECTABLE; | |
563 | } | |
564 | ||
565 | return type; | |
566 | } | |
567 | ||
6e1d5dcc | 568 | const struct inode_operations nilfs_dir_inode_operations = { |
d2500652 RK |
569 | .create = nilfs_create, |
570 | .lookup = nilfs_lookup, | |
571 | .link = nilfs_link, | |
572 | .unlink = nilfs_unlink, | |
573 | .symlink = nilfs_symlink, | |
574 | .mkdir = nilfs_mkdir, | |
575 | .rmdir = nilfs_rmdir, | |
576 | .mknod = nilfs_mknod, | |
577 | .rename = nilfs_rename, | |
578 | .setattr = nilfs_setattr, | |
579 | .permission = nilfs_permission, | |
580 | }; | |
581 | ||
6e1d5dcc | 582 | const struct inode_operations nilfs_special_inode_operations = { |
d2500652 RK |
583 | .setattr = nilfs_setattr, |
584 | .permission = nilfs_permission, | |
585 | }; | |
586 | ||
6e1d5dcc | 587 | const struct inode_operations nilfs_symlink_inode_operations = { |
d2500652 RK |
588 | .readlink = generic_readlink, |
589 | .follow_link = page_follow_link_light, | |
590 | .put_link = page_put_link, | |
dc3d3b81 | 591 | .permission = nilfs_permission, |
d2500652 | 592 | }; |
8e656fd5 RK |
593 | |
594 | const struct export_operations nilfs_export_ops = { | |
595 | .encode_fh = nilfs_encode_fh, | |
596 | .fh_to_dentry = nilfs_fh_to_dentry, | |
597 | .fh_to_parent = nilfs_fh_to_parent, | |
598 | .get_parent = nilfs_get_parent, | |
599 | }; |