Commit | Line | Data |
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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 | * | |
4b420ab4 | 16 | * Modified for NILFS by Amagai Yoshiji and Ryusuke Konishi. |
d2500652 RK |
17 | */ |
18 | /* | |
19 | * linux/fs/ext2/namei.c | |
20 | * | |
21 | * Copyright (C) 1992, 1993, 1994, 1995 | |
22 | * Remy Card (card@masi.ibp.fr) | |
23 | * Laboratoire MASI - Institut Blaise Pascal | |
24 | * Universite Pierre et Marie Curie (Paris VI) | |
25 | * | |
26 | * from | |
27 | * | |
28 | * linux/fs/minix/namei.c | |
29 | * | |
30 | * Copyright (C) 1991, 1992 Linus Torvalds | |
31 | * | |
32 | * Big-endian to little-endian byte-swapping/bitmaps by | |
33 | * David S. Miller (davem@caip.rutgers.edu), 1995 | |
34 | */ | |
35 | ||
36 | #include <linux/pagemap.h> | |
37 | #include "nilfs.h" | |
8e656fd5 | 38 | #include "export.h" |
d2500652 | 39 | |
8e656fd5 RK |
40 | #define NILFS_FID_SIZE_NON_CONNECTABLE \ |
41 | (offsetof(struct nilfs_fid, parent_gen) / 4) | |
42 | #define NILFS_FID_SIZE_CONNECTABLE (sizeof(struct nilfs_fid) / 4) | |
d2500652 RK |
43 | |
44 | static inline int nilfs_add_nondir(struct dentry *dentry, struct inode *inode) | |
45 | { | |
46 | int err = nilfs_add_link(dentry, inode); | |
4ad364ca | 47 | |
d2500652 | 48 | if (!err) { |
f440ea85 | 49 | d_instantiate_new(dentry, inode); |
d2500652 RK |
50 | return 0; |
51 | } | |
52 | inode_dec_link_count(inode); | |
705304a8 | 53 | unlock_new_inode(inode); |
d2500652 RK |
54 | iput(inode); |
55 | return err; | |
56 | } | |
57 | ||
58 | /* | |
59 | * Methods themselves. | |
60 | */ | |
61 | ||
62 | static struct dentry * | |
00cd8dd3 | 63 | nilfs_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags) |
d2500652 RK |
64 | { |
65 | struct inode *inode; | |
66 | ino_t ino; | |
67 | ||
68 | if (dentry->d_name.len > NILFS_NAME_LEN) | |
69 | return ERR_PTR(-ENAMETOOLONG); | |
70 | ||
0319003d | 71 | ino = nilfs_inode_by_name(dir, &dentry->d_name); |
a9049376 | 72 | inode = ino ? nilfs_iget(dir->i_sb, NILFS_I(dir)->i_root, ino) : NULL; |
d2500652 RK |
73 | return d_splice_alias(inode, dentry); |
74 | } | |
75 | ||
d2500652 RK |
76 | /* |
77 | * By the time this is called, we already have created | |
78 | * the directory cache entry for the new file, but it | |
79 | * is so far negative - it has no inode. | |
80 | * | |
81 | * If the create succeeds, we fill in the inode information | |
82 | * with d_instantiate(). | |
83 | */ | |
4acdaf27 | 84 | static int nilfs_create(struct inode *dir, struct dentry *dentry, umode_t mode, |
ebfc3b49 | 85 | bool excl) |
d2500652 RK |
86 | { |
87 | struct inode *inode; | |
88 | struct nilfs_transaction_info ti; | |
47420c79 | 89 | int err; |
d2500652 RK |
90 | |
91 | err = nilfs_transaction_begin(dir->i_sb, &ti, 1); | |
92 | if (err) | |
93 | return err; | |
94 | inode = nilfs_new_inode(dir, mode); | |
95 | err = PTR_ERR(inode); | |
96 | if (!IS_ERR(inode)) { | |
97 | inode->i_op = &nilfs_file_inode_operations; | |
98 | inode->i_fop = &nilfs_file_operations; | |
99 | inode->i_mapping->a_ops = &nilfs_aops; | |
abdb318b | 100 | nilfs_mark_inode_dirty(inode); |
d2500652 RK |
101 | err = nilfs_add_nondir(dentry, inode); |
102 | } | |
47420c79 RK |
103 | if (!err) |
104 | err = nilfs_transaction_commit(dir->i_sb); | |
105 | else | |
106 | nilfs_transaction_abort(dir->i_sb); | |
107 | ||
108 | return err; | |
d2500652 RK |
109 | } |
110 | ||
111 | static int | |
1a67aafb | 112 | nilfs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t rdev) |
d2500652 RK |
113 | { |
114 | struct inode *inode; | |
115 | struct nilfs_transaction_info ti; | |
47420c79 | 116 | int err; |
d2500652 | 117 | |
d2500652 RK |
118 | err = nilfs_transaction_begin(dir->i_sb, &ti, 1); |
119 | if (err) | |
120 | return err; | |
121 | inode = nilfs_new_inode(dir, mode); | |
122 | err = PTR_ERR(inode); | |
123 | if (!IS_ERR(inode)) { | |
124 | init_special_inode(inode, inode->i_mode, rdev); | |
abdb318b | 125 | nilfs_mark_inode_dirty(inode); |
d2500652 RK |
126 | err = nilfs_add_nondir(dentry, inode); |
127 | } | |
47420c79 RK |
128 | if (!err) |
129 | err = nilfs_transaction_commit(dir->i_sb); | |
130 | else | |
131 | nilfs_transaction_abort(dir->i_sb); | |
132 | ||
133 | return err; | |
d2500652 RK |
134 | } |
135 | ||
136 | static int nilfs_symlink(struct inode *dir, struct dentry *dentry, | |
137 | const char *symname) | |
138 | { | |
139 | struct nilfs_transaction_info ti; | |
140 | struct super_block *sb = dir->i_sb; | |
0c6c44cb | 141 | unsigned int l = strlen(symname) + 1; |
d2500652 | 142 | struct inode *inode; |
47420c79 | 143 | int err; |
d2500652 RK |
144 | |
145 | if (l > sb->s_blocksize) | |
146 | return -ENAMETOOLONG; | |
147 | ||
148 | err = nilfs_transaction_begin(dir->i_sb, &ti, 1); | |
149 | if (err) | |
150 | return err; | |
151 | ||
152 | inode = nilfs_new_inode(dir, S_IFLNK | S_IRWXUGO); | |
153 | err = PTR_ERR(inode); | |
154 | if (IS_ERR(inode)) | |
155 | goto out; | |
156 | ||
157 | /* slow symlink */ | |
158 | inode->i_op = &nilfs_symlink_inode_operations; | |
21fc61c7 | 159 | inode_nohighmem(inode); |
d2500652 RK |
160 | inode->i_mapping->a_ops = &nilfs_aops; |
161 | err = page_symlink(inode, symname, l); | |
162 | if (err) | |
163 | goto out_fail; | |
164 | ||
165 | /* mark_inode_dirty(inode); */ | |
9ca941d4 | 166 | /* page_symlink() do this */ |
d2500652 RK |
167 | |
168 | err = nilfs_add_nondir(dentry, inode); | |
169 | out: | |
47420c79 RK |
170 | if (!err) |
171 | err = nilfs_transaction_commit(dir->i_sb); | |
172 | else | |
173 | nilfs_transaction_abort(dir->i_sb); | |
174 | ||
175 | return err; | |
d2500652 RK |
176 | |
177 | out_fail: | |
565de406 | 178 | drop_nlink(inode); |
abdb318b | 179 | nilfs_mark_inode_dirty(inode); |
705304a8 | 180 | unlock_new_inode(inode); |
d2500652 RK |
181 | iput(inode); |
182 | goto out; | |
183 | } | |
184 | ||
185 | static int nilfs_link(struct dentry *old_dentry, struct inode *dir, | |
186 | struct dentry *dentry) | |
187 | { | |
2b0143b5 | 188 | struct inode *inode = d_inode(old_dentry); |
d2500652 | 189 | struct nilfs_transaction_info ti; |
47420c79 | 190 | int err; |
d2500652 | 191 | |
d2500652 RK |
192 | err = nilfs_transaction_begin(dir->i_sb, &ti, 1); |
193 | if (err) | |
194 | return err; | |
195 | ||
078cd827 | 196 | inode->i_ctime = current_time(inode); |
d2500652 | 197 | inode_inc_link_count(inode); |
7de9c6ee | 198 | ihold(inode); |
d2500652 | 199 | |
705304a8 RK |
200 | err = nilfs_add_link(dentry, inode); |
201 | if (!err) { | |
202 | d_instantiate(dentry, inode); | |
47420c79 | 203 | err = nilfs_transaction_commit(dir->i_sb); |
705304a8 RK |
204 | } else { |
205 | inode_dec_link_count(inode); | |
206 | iput(inode); | |
47420c79 | 207 | nilfs_transaction_abort(dir->i_sb); |
705304a8 | 208 | } |
47420c79 RK |
209 | |
210 | return err; | |
d2500652 RK |
211 | } |
212 | ||
18bb1db3 | 213 | static int nilfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) |
d2500652 RK |
214 | { |
215 | struct inode *inode; | |
216 | struct nilfs_transaction_info ti; | |
47420c79 | 217 | int err; |
d2500652 | 218 | |
d2500652 RK |
219 | err = nilfs_transaction_begin(dir->i_sb, &ti, 1); |
220 | if (err) | |
221 | return err; | |
222 | ||
565de406 | 223 | inc_nlink(dir); |
d2500652 RK |
224 | |
225 | inode = nilfs_new_inode(dir, S_IFDIR | mode); | |
226 | err = PTR_ERR(inode); | |
227 | if (IS_ERR(inode)) | |
228 | goto out_dir; | |
229 | ||
230 | inode->i_op = &nilfs_dir_inode_operations; | |
231 | inode->i_fop = &nilfs_dir_operations; | |
232 | inode->i_mapping->a_ops = &nilfs_aops; | |
233 | ||
565de406 | 234 | inc_nlink(inode); |
d2500652 RK |
235 | |
236 | err = nilfs_make_empty(inode, dir); | |
237 | if (err) | |
238 | goto out_fail; | |
239 | ||
240 | err = nilfs_add_link(dentry, inode); | |
241 | if (err) | |
242 | goto out_fail; | |
243 | ||
abdb318b | 244 | nilfs_mark_inode_dirty(inode); |
f440ea85 | 245 | d_instantiate_new(dentry, inode); |
d2500652 | 246 | out: |
47420c79 RK |
247 | if (!err) |
248 | err = nilfs_transaction_commit(dir->i_sb); | |
249 | else | |
250 | nilfs_transaction_abort(dir->i_sb); | |
251 | ||
252 | return err; | |
d2500652 RK |
253 | |
254 | out_fail: | |
565de406 | 255 | drop_nlink(inode); |
565de406 | 256 | drop_nlink(inode); |
abdb318b | 257 | nilfs_mark_inode_dirty(inode); |
705304a8 | 258 | unlock_new_inode(inode); |
d2500652 RK |
259 | iput(inode); |
260 | out_dir: | |
565de406 | 261 | drop_nlink(dir); |
abdb318b | 262 | nilfs_mark_inode_dirty(dir); |
d2500652 RK |
263 | goto out; |
264 | } | |
265 | ||
4cd76c3c | 266 | static int nilfs_do_unlink(struct inode *dir, struct dentry *dentry) |
d2500652 RK |
267 | { |
268 | struct inode *inode; | |
269 | struct nilfs_dir_entry *de; | |
270 | struct page *page; | |
47420c79 | 271 | int err; |
d2500652 | 272 | |
d2500652 | 273 | err = -ENOENT; |
0319003d | 274 | de = nilfs_find_entry(dir, &dentry->d_name, &page); |
d2500652 RK |
275 | if (!de) |
276 | goto out; | |
277 | ||
2b0143b5 | 278 | inode = d_inode(dentry); |
d2500652 RK |
279 | err = -EIO; |
280 | if (le64_to_cpu(de->inode) != inode->i_ino) | |
281 | goto out; | |
282 | ||
283 | if (!inode->i_nlink) { | |
d6517deb RK |
284 | nilfs_msg(inode->i_sb, KERN_WARNING, |
285 | "deleting nonexistent file (ino=%lu), %d", | |
286 | inode->i_ino, inode->i_nlink); | |
bfe86848 | 287 | set_nlink(inode, 1); |
d2500652 RK |
288 | } |
289 | err = nilfs_delete_entry(de, page); | |
290 | if (err) | |
291 | goto out; | |
292 | ||
293 | inode->i_ctime = dir->i_ctime; | |
565de406 | 294 | drop_nlink(inode); |
d2500652 RK |
295 | err = 0; |
296 | out: | |
4cd76c3c JS |
297 | return err; |
298 | } | |
299 | ||
300 | static int nilfs_unlink(struct inode *dir, struct dentry *dentry) | |
301 | { | |
302 | struct nilfs_transaction_info ti; | |
303 | int err; | |
304 | ||
305 | err = nilfs_transaction_begin(dir->i_sb, &ti, 0); | |
306 | if (err) | |
307 | return err; | |
308 | ||
309 | err = nilfs_do_unlink(dir, dentry); | |
310 | ||
311 | if (!err) { | |
abdb318b | 312 | nilfs_mark_inode_dirty(dir); |
2b0143b5 | 313 | nilfs_mark_inode_dirty(d_inode(dentry)); |
47420c79 | 314 | err = nilfs_transaction_commit(dir->i_sb); |
4cd76c3c | 315 | } else |
47420c79 RK |
316 | nilfs_transaction_abort(dir->i_sb); |
317 | ||
318 | return err; | |
d2500652 RK |
319 | } |
320 | ||
321 | static int nilfs_rmdir(struct inode *dir, struct dentry *dentry) | |
322 | { | |
2b0143b5 | 323 | struct inode *inode = d_inode(dentry); |
d2500652 | 324 | struct nilfs_transaction_info ti; |
47420c79 | 325 | int err; |
d2500652 RK |
326 | |
327 | err = nilfs_transaction_begin(dir->i_sb, &ti, 0); | |
328 | if (err) | |
329 | return err; | |
330 | ||
331 | err = -ENOTEMPTY; | |
332 | if (nilfs_empty_dir(inode)) { | |
4cd76c3c | 333 | err = nilfs_do_unlink(dir, dentry); |
d2500652 RK |
334 | if (!err) { |
335 | inode->i_size = 0; | |
565de406 | 336 | drop_nlink(inode); |
abdb318b | 337 | nilfs_mark_inode_dirty(inode); |
565de406 | 338 | drop_nlink(dir); |
abdb318b | 339 | nilfs_mark_inode_dirty(dir); |
d2500652 RK |
340 | } |
341 | } | |
47420c79 RK |
342 | if (!err) |
343 | err = nilfs_transaction_commit(dir->i_sb); | |
344 | else | |
345 | nilfs_transaction_abort(dir->i_sb); | |
346 | ||
347 | return err; | |
d2500652 RK |
348 | } |
349 | ||
350 | static int nilfs_rename(struct inode *old_dir, struct dentry *old_dentry, | |
f03b8ad8 MS |
351 | struct inode *new_dir, struct dentry *new_dentry, |
352 | unsigned int flags) | |
d2500652 | 353 | { |
2b0143b5 DH |
354 | struct inode *old_inode = d_inode(old_dentry); |
355 | struct inode *new_inode = d_inode(new_dentry); | |
d2500652 RK |
356 | struct page *dir_page = NULL; |
357 | struct nilfs_dir_entry *dir_de = NULL; | |
358 | struct page *old_page; | |
359 | struct nilfs_dir_entry *old_de; | |
360 | struct nilfs_transaction_info ti; | |
361 | int err; | |
362 | ||
f03b8ad8 MS |
363 | if (flags & ~RENAME_NOREPLACE) |
364 | return -EINVAL; | |
365 | ||
d2500652 RK |
366 | err = nilfs_transaction_begin(old_dir->i_sb, &ti, 1); |
367 | if (unlikely(err)) | |
368 | return err; | |
369 | ||
370 | err = -ENOENT; | |
0319003d | 371 | old_de = nilfs_find_entry(old_dir, &old_dentry->d_name, &old_page); |
d2500652 RK |
372 | if (!old_de) |
373 | goto out; | |
374 | ||
375 | if (S_ISDIR(old_inode->i_mode)) { | |
376 | err = -EIO; | |
377 | dir_de = nilfs_dotdot(old_inode, &dir_page); | |
378 | if (!dir_de) | |
379 | goto out_old; | |
380 | } | |
381 | ||
382 | if (new_inode) { | |
383 | struct page *new_page; | |
384 | struct nilfs_dir_entry *new_de; | |
385 | ||
386 | err = -ENOTEMPTY; | |
387 | if (dir_de && !nilfs_empty_dir(new_inode)) | |
388 | goto out_dir; | |
389 | ||
390 | err = -ENOENT; | |
0319003d | 391 | new_de = nilfs_find_entry(new_dir, &new_dentry->d_name, &new_page); |
d2500652 RK |
392 | if (!new_de) |
393 | goto out_dir; | |
d2500652 | 394 | nilfs_set_link(new_dir, new_de, new_page, old_inode); |
abdb318b | 395 | nilfs_mark_inode_dirty(new_dir); |
078cd827 | 396 | new_inode->i_ctime = current_time(new_inode); |
d2500652 RK |
397 | if (dir_de) |
398 | drop_nlink(new_inode); | |
565de406 | 399 | drop_nlink(new_inode); |
abdb318b | 400 | nilfs_mark_inode_dirty(new_inode); |
d2500652 | 401 | } else { |
d2500652 | 402 | err = nilfs_add_link(new_dentry, old_inode); |
30eb43d3 | 403 | if (err) |
d2500652 | 404 | goto out_dir; |
565de406 JS |
405 | if (dir_de) { |
406 | inc_nlink(new_dir); | |
abdb318b | 407 | nilfs_mark_inode_dirty(new_dir); |
565de406 | 408 | } |
d2500652 RK |
409 | } |
410 | ||
411 | /* | |
412 | * Like most other Unix systems, set the ctime for inodes on a | |
413 | * rename. | |
d2500652 | 414 | */ |
078cd827 | 415 | old_inode->i_ctime = current_time(old_inode); |
d2500652 RK |
416 | |
417 | nilfs_delete_entry(old_de, old_page); | |
d2500652 RK |
418 | |
419 | if (dir_de) { | |
420 | nilfs_set_link(old_inode, dir_de, dir_page, new_dir); | |
565de406 | 421 | drop_nlink(old_dir); |
d2500652 | 422 | } |
abdb318b JS |
423 | nilfs_mark_inode_dirty(old_dir); |
424 | nilfs_mark_inode_dirty(old_inode); | |
d2500652 | 425 | |
47420c79 | 426 | err = nilfs_transaction_commit(old_dir->i_sb); |
d2500652 RK |
427 | return err; |
428 | ||
429 | out_dir: | |
430 | if (dir_de) { | |
431 | kunmap(dir_page); | |
09cbfeaf | 432 | put_page(dir_page); |
d2500652 RK |
433 | } |
434 | out_old: | |
435 | kunmap(old_page); | |
09cbfeaf | 436 | put_page(old_page); |
d2500652 | 437 | out: |
47420c79 | 438 | nilfs_transaction_abort(old_dir->i_sb); |
d2500652 RK |
439 | return err; |
440 | } | |
441 | ||
8e656fd5 RK |
442 | /* |
443 | * Export operations | |
444 | */ | |
445 | static struct dentry *nilfs_get_parent(struct dentry *child) | |
446 | { | |
447 | unsigned long ino; | |
448 | struct inode *inode; | |
26fe5750 | 449 | struct qstr dotdot = QSTR_INIT("..", 2); |
8e656fd5 RK |
450 | struct nilfs_root *root; |
451 | ||
2b0143b5 | 452 | ino = nilfs_inode_by_name(d_inode(child), &dotdot); |
8e656fd5 RK |
453 | if (!ino) |
454 | return ERR_PTR(-ENOENT); | |
455 | ||
2b0143b5 | 456 | root = NILFS_I(d_inode(child))->i_root; |
8e656fd5 | 457 | |
fc64005c | 458 | inode = nilfs_iget(child->d_sb, root, ino); |
8e656fd5 RK |
459 | if (IS_ERR(inode)) |
460 | return ERR_CAST(inode); | |
461 | ||
462 | return d_obtain_alias(inode); | |
463 | } | |
464 | ||
465 | static struct dentry *nilfs_get_dentry(struct super_block *sb, u64 cno, | |
466 | u64 ino, u32 gen) | |
467 | { | |
468 | struct nilfs_root *root; | |
469 | struct inode *inode; | |
470 | ||
471 | if (ino < NILFS_FIRST_INO(sb) && ino != NILFS_ROOT_INO) | |
472 | return ERR_PTR(-ESTALE); | |
473 | ||
e3154e97 | 474 | root = nilfs_lookup_root(sb->s_fs_info, cno); |
8e656fd5 RK |
475 | if (!root) |
476 | return ERR_PTR(-ESTALE); | |
477 | ||
478 | inode = nilfs_iget(sb, root, ino); | |
479 | nilfs_put_root(root); | |
480 | ||
481 | if (IS_ERR(inode)) | |
482 | return ERR_CAST(inode); | |
483 | if (gen && inode->i_generation != gen) { | |
484 | iput(inode); | |
485 | return ERR_PTR(-ESTALE); | |
486 | } | |
487 | return d_obtain_alias(inode); | |
488 | } | |
489 | ||
490 | static struct dentry *nilfs_fh_to_dentry(struct super_block *sb, struct fid *fh, | |
491 | int fh_len, int fh_type) | |
492 | { | |
493 | struct nilfs_fid *fid = (struct nilfs_fid *)fh; | |
494 | ||
f73c2f1f | 495 | if (fh_len < NILFS_FID_SIZE_NON_CONNECTABLE || |
8e656fd5 RK |
496 | (fh_type != FILEID_NILFS_WITH_PARENT && |
497 | fh_type != FILEID_NILFS_WITHOUT_PARENT)) | |
498 | return NULL; | |
499 | ||
500 | return nilfs_get_dentry(sb, fid->cno, fid->ino, fid->gen); | |
501 | } | |
502 | ||
503 | static struct dentry *nilfs_fh_to_parent(struct super_block *sb, struct fid *fh, | |
504 | int fh_len, int fh_type) | |
505 | { | |
506 | struct nilfs_fid *fid = (struct nilfs_fid *)fh; | |
507 | ||
f73c2f1f | 508 | if (fh_len < NILFS_FID_SIZE_CONNECTABLE || |
8e656fd5 RK |
509 | fh_type != FILEID_NILFS_WITH_PARENT) |
510 | return NULL; | |
511 | ||
512 | return nilfs_get_dentry(sb, fid->cno, fid->parent_ino, fid->parent_gen); | |
513 | } | |
514 | ||
b0b0382b AV |
515 | static int nilfs_encode_fh(struct inode *inode, __u32 *fh, int *lenp, |
516 | struct inode *parent) | |
8e656fd5 RK |
517 | { |
518 | struct nilfs_fid *fid = (struct nilfs_fid *)fh; | |
8e656fd5 RK |
519 | struct nilfs_root *root = NILFS_I(inode)->i_root; |
520 | int type; | |
521 | ||
b0b0382b AV |
522 | if (parent && *lenp < NILFS_FID_SIZE_CONNECTABLE) { |
523 | *lenp = NILFS_FID_SIZE_CONNECTABLE; | |
94e07a75 | 524 | return FILEID_INVALID; |
b0b0382b AV |
525 | } |
526 | if (*lenp < NILFS_FID_SIZE_NON_CONNECTABLE) { | |
527 | *lenp = NILFS_FID_SIZE_NON_CONNECTABLE; | |
94e07a75 | 528 | return FILEID_INVALID; |
b0b0382b | 529 | } |
8e656fd5 RK |
530 | |
531 | fid->cno = root->cno; | |
532 | fid->ino = inode->i_ino; | |
533 | fid->gen = inode->i_generation; | |
534 | ||
b0b0382b | 535 | if (parent) { |
8e656fd5 RK |
536 | fid->parent_ino = parent->i_ino; |
537 | fid->parent_gen = parent->i_generation; | |
8e656fd5 RK |
538 | type = FILEID_NILFS_WITH_PARENT; |
539 | *lenp = NILFS_FID_SIZE_CONNECTABLE; | |
540 | } else { | |
541 | type = FILEID_NILFS_WITHOUT_PARENT; | |
542 | *lenp = NILFS_FID_SIZE_NON_CONNECTABLE; | |
543 | } | |
544 | ||
545 | return type; | |
546 | } | |
547 | ||
6e1d5dcc | 548 | const struct inode_operations nilfs_dir_inode_operations = { |
d2500652 RK |
549 | .create = nilfs_create, |
550 | .lookup = nilfs_lookup, | |
551 | .link = nilfs_link, | |
552 | .unlink = nilfs_unlink, | |
553 | .symlink = nilfs_symlink, | |
554 | .mkdir = nilfs_mkdir, | |
555 | .rmdir = nilfs_rmdir, | |
556 | .mknod = nilfs_mknod, | |
557 | .rename = nilfs_rename, | |
558 | .setattr = nilfs_setattr, | |
559 | .permission = nilfs_permission, | |
622daaff | 560 | .fiemap = nilfs_fiemap, |
d2500652 RK |
561 | }; |
562 | ||
6e1d5dcc | 563 | const struct inode_operations nilfs_special_inode_operations = { |
d2500652 RK |
564 | .setattr = nilfs_setattr, |
565 | .permission = nilfs_permission, | |
566 | }; | |
567 | ||
6e1d5dcc | 568 | const struct inode_operations nilfs_symlink_inode_operations = { |
6b255391 | 569 | .get_link = page_get_link, |
dc3d3b81 | 570 | .permission = nilfs_permission, |
d2500652 | 571 | }; |
8e656fd5 RK |
572 | |
573 | const struct export_operations nilfs_export_ops = { | |
574 | .encode_fh = nilfs_encode_fh, | |
575 | .fh_to_dentry = nilfs_fh_to_dentry, | |
576 | .fh_to_parent = nilfs_fh_to_parent, | |
577 | .get_parent = nilfs_get_parent, | |
578 | }; |