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Commit | Line | Data |
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ae98043f | 1 | // SPDX-License-Identifier: GPL-2.0+ |
d2500652 RK |
2 | /* |
3 | * namei.c - NILFS pathname lookup operations. | |
4 | * | |
5 | * Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation. | |
6 | * | |
4b420ab4 | 7 | * Modified for NILFS by Amagai Yoshiji and Ryusuke Konishi. |
d2500652 RK |
8 | */ |
9 | /* | |
10 | * linux/fs/ext2/namei.c | |
11 | * | |
12 | * Copyright (C) 1992, 1993, 1994, 1995 | |
13 | * Remy Card (card@masi.ibp.fr) | |
14 | * Laboratoire MASI - Institut Blaise Pascal | |
15 | * Universite Pierre et Marie Curie (Paris VI) | |
16 | * | |
17 | * from | |
18 | * | |
19 | * linux/fs/minix/namei.c | |
20 | * | |
21 | * Copyright (C) 1991, 1992 Linus Torvalds | |
22 | * | |
23 | * Big-endian to little-endian byte-swapping/bitmaps by | |
24 | * David S. Miller (davem@caip.rutgers.edu), 1995 | |
25 | */ | |
26 | ||
27 | #include <linux/pagemap.h> | |
28 | #include "nilfs.h" | |
8e656fd5 | 29 | #include "export.h" |
d2500652 | 30 | |
8e656fd5 RK |
31 | #define NILFS_FID_SIZE_NON_CONNECTABLE \ |
32 | (offsetof(struct nilfs_fid, parent_gen) / 4) | |
33 | #define NILFS_FID_SIZE_CONNECTABLE (sizeof(struct nilfs_fid) / 4) | |
d2500652 RK |
34 | |
35 | static inline int nilfs_add_nondir(struct dentry *dentry, struct inode *inode) | |
36 | { | |
37 | int err = nilfs_add_link(dentry, inode); | |
4ad364ca | 38 | |
d2500652 | 39 | if (!err) { |
1e2e547a | 40 | d_instantiate_new(dentry, inode); |
d2500652 RK |
41 | return 0; |
42 | } | |
43 | inode_dec_link_count(inode); | |
705304a8 | 44 | unlock_new_inode(inode); |
d2500652 RK |
45 | iput(inode); |
46 | return err; | |
47 | } | |
48 | ||
49 | /* | |
50 | * Methods themselves. | |
51 | */ | |
52 | ||
53 | static struct dentry * | |
00cd8dd3 | 54 | nilfs_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags) |
d2500652 RK |
55 | { |
56 | struct inode *inode; | |
57 | ino_t ino; | |
58 | ||
59 | if (dentry->d_name.len > NILFS_NAME_LEN) | |
60 | return ERR_PTR(-ENAMETOOLONG); | |
61 | ||
0319003d | 62 | ino = nilfs_inode_by_name(dir, &dentry->d_name); |
a9049376 | 63 | inode = ino ? nilfs_iget(dir->i_sb, NILFS_I(dir)->i_root, ino) : NULL; |
d2500652 RK |
64 | return d_splice_alias(inode, dentry); |
65 | } | |
66 | ||
d2500652 RK |
67 | /* |
68 | * By the time this is called, we already have created | |
69 | * the directory cache entry for the new file, but it | |
70 | * is so far negative - it has no inode. | |
71 | * | |
72 | * If the create succeeds, we fill in the inode information | |
73 | * with d_instantiate(). | |
74 | */ | |
4acdaf27 | 75 | static int nilfs_create(struct inode *dir, struct dentry *dentry, umode_t mode, |
ebfc3b49 | 76 | bool excl) |
d2500652 RK |
77 | { |
78 | struct inode *inode; | |
79 | struct nilfs_transaction_info ti; | |
47420c79 | 80 | int err; |
d2500652 RK |
81 | |
82 | err = nilfs_transaction_begin(dir->i_sb, &ti, 1); | |
83 | if (err) | |
84 | return err; | |
85 | inode = nilfs_new_inode(dir, mode); | |
86 | err = PTR_ERR(inode); | |
87 | if (!IS_ERR(inode)) { | |
88 | inode->i_op = &nilfs_file_inode_operations; | |
89 | inode->i_fop = &nilfs_file_operations; | |
90 | inode->i_mapping->a_ops = &nilfs_aops; | |
abdb318b | 91 | nilfs_mark_inode_dirty(inode); |
d2500652 RK |
92 | err = nilfs_add_nondir(dentry, inode); |
93 | } | |
47420c79 RK |
94 | if (!err) |
95 | err = nilfs_transaction_commit(dir->i_sb); | |
96 | else | |
97 | nilfs_transaction_abort(dir->i_sb); | |
98 | ||
99 | return err; | |
d2500652 RK |
100 | } |
101 | ||
102 | static int | |
1a67aafb | 103 | nilfs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t rdev) |
d2500652 RK |
104 | { |
105 | struct inode *inode; | |
106 | struct nilfs_transaction_info ti; | |
47420c79 | 107 | int err; |
d2500652 | 108 | |
d2500652 RK |
109 | err = nilfs_transaction_begin(dir->i_sb, &ti, 1); |
110 | if (err) | |
111 | return err; | |
112 | inode = nilfs_new_inode(dir, mode); | |
113 | err = PTR_ERR(inode); | |
114 | if (!IS_ERR(inode)) { | |
115 | init_special_inode(inode, inode->i_mode, rdev); | |
abdb318b | 116 | nilfs_mark_inode_dirty(inode); |
d2500652 RK |
117 | err = nilfs_add_nondir(dentry, inode); |
118 | } | |
47420c79 RK |
119 | if (!err) |
120 | err = nilfs_transaction_commit(dir->i_sb); | |
121 | else | |
122 | nilfs_transaction_abort(dir->i_sb); | |
123 | ||
124 | return err; | |
d2500652 RK |
125 | } |
126 | ||
127 | static int nilfs_symlink(struct inode *dir, struct dentry *dentry, | |
128 | const char *symname) | |
129 | { | |
130 | struct nilfs_transaction_info ti; | |
131 | struct super_block *sb = dir->i_sb; | |
0c6c44cb | 132 | unsigned int l = strlen(symname) + 1; |
d2500652 | 133 | struct inode *inode; |
47420c79 | 134 | int err; |
d2500652 RK |
135 | |
136 | if (l > sb->s_blocksize) | |
137 | return -ENAMETOOLONG; | |
138 | ||
139 | err = nilfs_transaction_begin(dir->i_sb, &ti, 1); | |
140 | if (err) | |
141 | return err; | |
142 | ||
3147db89 | 143 | inode = nilfs_new_inode(dir, S_IFLNK | 0777); |
d2500652 RK |
144 | err = PTR_ERR(inode); |
145 | if (IS_ERR(inode)) | |
146 | goto out; | |
147 | ||
148 | /* slow symlink */ | |
149 | inode->i_op = &nilfs_symlink_inode_operations; | |
21fc61c7 | 150 | inode_nohighmem(inode); |
d2500652 RK |
151 | inode->i_mapping->a_ops = &nilfs_aops; |
152 | err = page_symlink(inode, symname, l); | |
153 | if (err) | |
154 | goto out_fail; | |
155 | ||
156 | /* mark_inode_dirty(inode); */ | |
9ca941d4 | 157 | /* page_symlink() do this */ |
d2500652 RK |
158 | |
159 | err = nilfs_add_nondir(dentry, inode); | |
160 | out: | |
47420c79 RK |
161 | if (!err) |
162 | err = nilfs_transaction_commit(dir->i_sb); | |
163 | else | |
164 | nilfs_transaction_abort(dir->i_sb); | |
165 | ||
166 | return err; | |
d2500652 RK |
167 | |
168 | out_fail: | |
565de406 | 169 | drop_nlink(inode); |
abdb318b | 170 | nilfs_mark_inode_dirty(inode); |
705304a8 | 171 | unlock_new_inode(inode); |
d2500652 RK |
172 | iput(inode); |
173 | goto out; | |
174 | } | |
175 | ||
176 | static int nilfs_link(struct dentry *old_dentry, struct inode *dir, | |
177 | struct dentry *dentry) | |
178 | { | |
2b0143b5 | 179 | struct inode *inode = d_inode(old_dentry); |
d2500652 | 180 | struct nilfs_transaction_info ti; |
47420c79 | 181 | int err; |
d2500652 | 182 | |
d2500652 RK |
183 | err = nilfs_transaction_begin(dir->i_sb, &ti, 1); |
184 | if (err) | |
185 | return err; | |
186 | ||
078cd827 | 187 | inode->i_ctime = current_time(inode); |
d2500652 | 188 | inode_inc_link_count(inode); |
7de9c6ee | 189 | ihold(inode); |
d2500652 | 190 | |
705304a8 RK |
191 | err = nilfs_add_link(dentry, inode); |
192 | if (!err) { | |
193 | d_instantiate(dentry, inode); | |
47420c79 | 194 | err = nilfs_transaction_commit(dir->i_sb); |
705304a8 RK |
195 | } else { |
196 | inode_dec_link_count(inode); | |
197 | iput(inode); | |
47420c79 | 198 | nilfs_transaction_abort(dir->i_sb); |
705304a8 | 199 | } |
47420c79 RK |
200 | |
201 | return err; | |
d2500652 RK |
202 | } |
203 | ||
18bb1db3 | 204 | static int nilfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) |
d2500652 RK |
205 | { |
206 | struct inode *inode; | |
207 | struct nilfs_transaction_info ti; | |
47420c79 | 208 | int err; |
d2500652 | 209 | |
d2500652 RK |
210 | err = nilfs_transaction_begin(dir->i_sb, &ti, 1); |
211 | if (err) | |
212 | return err; | |
213 | ||
565de406 | 214 | inc_nlink(dir); |
d2500652 RK |
215 | |
216 | inode = nilfs_new_inode(dir, S_IFDIR | mode); | |
217 | err = PTR_ERR(inode); | |
218 | if (IS_ERR(inode)) | |
219 | goto out_dir; | |
220 | ||
221 | inode->i_op = &nilfs_dir_inode_operations; | |
222 | inode->i_fop = &nilfs_dir_operations; | |
223 | inode->i_mapping->a_ops = &nilfs_aops; | |
224 | ||
565de406 | 225 | inc_nlink(inode); |
d2500652 RK |
226 | |
227 | err = nilfs_make_empty(inode, dir); | |
228 | if (err) | |
229 | goto out_fail; | |
230 | ||
231 | err = nilfs_add_link(dentry, inode); | |
232 | if (err) | |
233 | goto out_fail; | |
234 | ||
abdb318b | 235 | nilfs_mark_inode_dirty(inode); |
1e2e547a | 236 | d_instantiate_new(dentry, inode); |
d2500652 | 237 | out: |
47420c79 RK |
238 | if (!err) |
239 | err = nilfs_transaction_commit(dir->i_sb); | |
240 | else | |
241 | nilfs_transaction_abort(dir->i_sb); | |
242 | ||
243 | return err; | |
d2500652 RK |
244 | |
245 | out_fail: | |
565de406 | 246 | drop_nlink(inode); |
565de406 | 247 | drop_nlink(inode); |
abdb318b | 248 | nilfs_mark_inode_dirty(inode); |
705304a8 | 249 | unlock_new_inode(inode); |
d2500652 RK |
250 | iput(inode); |
251 | out_dir: | |
565de406 | 252 | drop_nlink(dir); |
abdb318b | 253 | nilfs_mark_inode_dirty(dir); |
d2500652 RK |
254 | goto out; |
255 | } | |
256 | ||
4cd76c3c | 257 | static int nilfs_do_unlink(struct inode *dir, struct dentry *dentry) |
d2500652 RK |
258 | { |
259 | struct inode *inode; | |
260 | struct nilfs_dir_entry *de; | |
261 | struct page *page; | |
47420c79 | 262 | int err; |
d2500652 | 263 | |
d2500652 | 264 | err = -ENOENT; |
0319003d | 265 | de = nilfs_find_entry(dir, &dentry->d_name, &page); |
d2500652 RK |
266 | if (!de) |
267 | goto out; | |
268 | ||
2b0143b5 | 269 | inode = d_inode(dentry); |
d2500652 RK |
270 | err = -EIO; |
271 | if (le64_to_cpu(de->inode) != inode->i_ino) | |
272 | goto out; | |
273 | ||
274 | if (!inode->i_nlink) { | |
d6517deb RK |
275 | nilfs_msg(inode->i_sb, KERN_WARNING, |
276 | "deleting nonexistent file (ino=%lu), %d", | |
277 | inode->i_ino, inode->i_nlink); | |
bfe86848 | 278 | set_nlink(inode, 1); |
d2500652 RK |
279 | } |
280 | err = nilfs_delete_entry(de, page); | |
281 | if (err) | |
282 | goto out; | |
283 | ||
284 | inode->i_ctime = dir->i_ctime; | |
565de406 | 285 | drop_nlink(inode); |
d2500652 RK |
286 | err = 0; |
287 | out: | |
4cd76c3c JS |
288 | return err; |
289 | } | |
290 | ||
291 | static int nilfs_unlink(struct inode *dir, struct dentry *dentry) | |
292 | { | |
293 | struct nilfs_transaction_info ti; | |
294 | int err; | |
295 | ||
296 | err = nilfs_transaction_begin(dir->i_sb, &ti, 0); | |
297 | if (err) | |
298 | return err; | |
299 | ||
300 | err = nilfs_do_unlink(dir, dentry); | |
301 | ||
302 | if (!err) { | |
abdb318b | 303 | nilfs_mark_inode_dirty(dir); |
2b0143b5 | 304 | nilfs_mark_inode_dirty(d_inode(dentry)); |
47420c79 | 305 | err = nilfs_transaction_commit(dir->i_sb); |
4cd76c3c | 306 | } else |
47420c79 RK |
307 | nilfs_transaction_abort(dir->i_sb); |
308 | ||
309 | return err; | |
d2500652 RK |
310 | } |
311 | ||
312 | static int nilfs_rmdir(struct inode *dir, struct dentry *dentry) | |
313 | { | |
2b0143b5 | 314 | struct inode *inode = d_inode(dentry); |
d2500652 | 315 | struct nilfs_transaction_info ti; |
47420c79 | 316 | int err; |
d2500652 RK |
317 | |
318 | err = nilfs_transaction_begin(dir->i_sb, &ti, 0); | |
319 | if (err) | |
320 | return err; | |
321 | ||
322 | err = -ENOTEMPTY; | |
323 | if (nilfs_empty_dir(inode)) { | |
4cd76c3c | 324 | err = nilfs_do_unlink(dir, dentry); |
d2500652 RK |
325 | if (!err) { |
326 | inode->i_size = 0; | |
565de406 | 327 | drop_nlink(inode); |
abdb318b | 328 | nilfs_mark_inode_dirty(inode); |
565de406 | 329 | drop_nlink(dir); |
abdb318b | 330 | nilfs_mark_inode_dirty(dir); |
d2500652 RK |
331 | } |
332 | } | |
47420c79 RK |
333 | if (!err) |
334 | err = nilfs_transaction_commit(dir->i_sb); | |
335 | else | |
336 | nilfs_transaction_abort(dir->i_sb); | |
337 | ||
338 | return err; | |
d2500652 RK |
339 | } |
340 | ||
341 | static int nilfs_rename(struct inode *old_dir, struct dentry *old_dentry, | |
f03b8ad8 MS |
342 | struct inode *new_dir, struct dentry *new_dentry, |
343 | unsigned int flags) | |
d2500652 | 344 | { |
2b0143b5 DH |
345 | struct inode *old_inode = d_inode(old_dentry); |
346 | struct inode *new_inode = d_inode(new_dentry); | |
d2500652 RK |
347 | struct page *dir_page = NULL; |
348 | struct nilfs_dir_entry *dir_de = NULL; | |
349 | struct page *old_page; | |
350 | struct nilfs_dir_entry *old_de; | |
351 | struct nilfs_transaction_info ti; | |
352 | int err; | |
353 | ||
f03b8ad8 MS |
354 | if (flags & ~RENAME_NOREPLACE) |
355 | return -EINVAL; | |
356 | ||
d2500652 RK |
357 | err = nilfs_transaction_begin(old_dir->i_sb, &ti, 1); |
358 | if (unlikely(err)) | |
359 | return err; | |
360 | ||
361 | err = -ENOENT; | |
0319003d | 362 | old_de = nilfs_find_entry(old_dir, &old_dentry->d_name, &old_page); |
d2500652 RK |
363 | if (!old_de) |
364 | goto out; | |
365 | ||
366 | if (S_ISDIR(old_inode->i_mode)) { | |
367 | err = -EIO; | |
368 | dir_de = nilfs_dotdot(old_inode, &dir_page); | |
369 | if (!dir_de) | |
370 | goto out_old; | |
371 | } | |
372 | ||
373 | if (new_inode) { | |
374 | struct page *new_page; | |
375 | struct nilfs_dir_entry *new_de; | |
376 | ||
377 | err = -ENOTEMPTY; | |
378 | if (dir_de && !nilfs_empty_dir(new_inode)) | |
379 | goto out_dir; | |
380 | ||
381 | err = -ENOENT; | |
0319003d | 382 | new_de = nilfs_find_entry(new_dir, &new_dentry->d_name, &new_page); |
d2500652 RK |
383 | if (!new_de) |
384 | goto out_dir; | |
d2500652 | 385 | nilfs_set_link(new_dir, new_de, new_page, old_inode); |
abdb318b | 386 | nilfs_mark_inode_dirty(new_dir); |
078cd827 | 387 | new_inode->i_ctime = current_time(new_inode); |
d2500652 RK |
388 | if (dir_de) |
389 | drop_nlink(new_inode); | |
565de406 | 390 | drop_nlink(new_inode); |
abdb318b | 391 | nilfs_mark_inode_dirty(new_inode); |
d2500652 | 392 | } else { |
d2500652 | 393 | err = nilfs_add_link(new_dentry, old_inode); |
30eb43d3 | 394 | if (err) |
d2500652 | 395 | goto out_dir; |
565de406 JS |
396 | if (dir_de) { |
397 | inc_nlink(new_dir); | |
abdb318b | 398 | nilfs_mark_inode_dirty(new_dir); |
565de406 | 399 | } |
d2500652 RK |
400 | } |
401 | ||
402 | /* | |
403 | * Like most other Unix systems, set the ctime for inodes on a | |
404 | * rename. | |
d2500652 | 405 | */ |
078cd827 | 406 | old_inode->i_ctime = current_time(old_inode); |
d2500652 RK |
407 | |
408 | nilfs_delete_entry(old_de, old_page); | |
d2500652 RK |
409 | |
410 | if (dir_de) { | |
411 | nilfs_set_link(old_inode, dir_de, dir_page, new_dir); | |
565de406 | 412 | drop_nlink(old_dir); |
d2500652 | 413 | } |
abdb318b JS |
414 | nilfs_mark_inode_dirty(old_dir); |
415 | nilfs_mark_inode_dirty(old_inode); | |
d2500652 | 416 | |
47420c79 | 417 | err = nilfs_transaction_commit(old_dir->i_sb); |
d2500652 RK |
418 | return err; |
419 | ||
420 | out_dir: | |
421 | if (dir_de) { | |
422 | kunmap(dir_page); | |
09cbfeaf | 423 | put_page(dir_page); |
d2500652 RK |
424 | } |
425 | out_old: | |
426 | kunmap(old_page); | |
09cbfeaf | 427 | put_page(old_page); |
d2500652 | 428 | out: |
47420c79 | 429 | nilfs_transaction_abort(old_dir->i_sb); |
d2500652 RK |
430 | return err; |
431 | } | |
432 | ||
8e656fd5 RK |
433 | /* |
434 | * Export operations | |
435 | */ | |
436 | static struct dentry *nilfs_get_parent(struct dentry *child) | |
437 | { | |
438 | unsigned long ino; | |
439 | struct inode *inode; | |
26fe5750 | 440 | struct qstr dotdot = QSTR_INIT("..", 2); |
8e656fd5 RK |
441 | struct nilfs_root *root; |
442 | ||
2b0143b5 | 443 | ino = nilfs_inode_by_name(d_inode(child), &dotdot); |
8e656fd5 RK |
444 | if (!ino) |
445 | return ERR_PTR(-ENOENT); | |
446 | ||
2b0143b5 | 447 | root = NILFS_I(d_inode(child))->i_root; |
8e656fd5 | 448 | |
fc64005c | 449 | inode = nilfs_iget(child->d_sb, root, ino); |
8e656fd5 RK |
450 | if (IS_ERR(inode)) |
451 | return ERR_CAST(inode); | |
452 | ||
453 | return d_obtain_alias(inode); | |
454 | } | |
455 | ||
456 | static struct dentry *nilfs_get_dentry(struct super_block *sb, u64 cno, | |
457 | u64 ino, u32 gen) | |
458 | { | |
459 | struct nilfs_root *root; | |
460 | struct inode *inode; | |
461 | ||
462 | if (ino < NILFS_FIRST_INO(sb) && ino != NILFS_ROOT_INO) | |
463 | return ERR_PTR(-ESTALE); | |
464 | ||
e3154e97 | 465 | root = nilfs_lookup_root(sb->s_fs_info, cno); |
8e656fd5 RK |
466 | if (!root) |
467 | return ERR_PTR(-ESTALE); | |
468 | ||
469 | inode = nilfs_iget(sb, root, ino); | |
470 | nilfs_put_root(root); | |
471 | ||
472 | if (IS_ERR(inode)) | |
473 | return ERR_CAST(inode); | |
474 | if (gen && inode->i_generation != gen) { | |
475 | iput(inode); | |
476 | return ERR_PTR(-ESTALE); | |
477 | } | |
478 | return d_obtain_alias(inode); | |
479 | } | |
480 | ||
481 | static struct dentry *nilfs_fh_to_dentry(struct super_block *sb, struct fid *fh, | |
482 | int fh_len, int fh_type) | |
483 | { | |
484 | struct nilfs_fid *fid = (struct nilfs_fid *)fh; | |
485 | ||
f73c2f1f | 486 | if (fh_len < NILFS_FID_SIZE_NON_CONNECTABLE || |
8e656fd5 RK |
487 | (fh_type != FILEID_NILFS_WITH_PARENT && |
488 | fh_type != FILEID_NILFS_WITHOUT_PARENT)) | |
489 | return NULL; | |
490 | ||
491 | return nilfs_get_dentry(sb, fid->cno, fid->ino, fid->gen); | |
492 | } | |
493 | ||
494 | static struct dentry *nilfs_fh_to_parent(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 | ||
f73c2f1f | 499 | if (fh_len < NILFS_FID_SIZE_CONNECTABLE || |
8e656fd5 RK |
500 | fh_type != FILEID_NILFS_WITH_PARENT) |
501 | return NULL; | |
502 | ||
503 | return nilfs_get_dentry(sb, fid->cno, fid->parent_ino, fid->parent_gen); | |
504 | } | |
505 | ||
b0b0382b AV |
506 | static int nilfs_encode_fh(struct inode *inode, __u32 *fh, int *lenp, |
507 | struct inode *parent) | |
8e656fd5 RK |
508 | { |
509 | struct nilfs_fid *fid = (struct nilfs_fid *)fh; | |
8e656fd5 RK |
510 | struct nilfs_root *root = NILFS_I(inode)->i_root; |
511 | int type; | |
512 | ||
b0b0382b AV |
513 | if (parent && *lenp < NILFS_FID_SIZE_CONNECTABLE) { |
514 | *lenp = NILFS_FID_SIZE_CONNECTABLE; | |
94e07a75 | 515 | return FILEID_INVALID; |
b0b0382b AV |
516 | } |
517 | if (*lenp < NILFS_FID_SIZE_NON_CONNECTABLE) { | |
518 | *lenp = NILFS_FID_SIZE_NON_CONNECTABLE; | |
94e07a75 | 519 | return FILEID_INVALID; |
b0b0382b | 520 | } |
8e656fd5 RK |
521 | |
522 | fid->cno = root->cno; | |
523 | fid->ino = inode->i_ino; | |
524 | fid->gen = inode->i_generation; | |
525 | ||
b0b0382b | 526 | if (parent) { |
8e656fd5 RK |
527 | fid->parent_ino = parent->i_ino; |
528 | fid->parent_gen = parent->i_generation; | |
8e656fd5 RK |
529 | type = FILEID_NILFS_WITH_PARENT; |
530 | *lenp = NILFS_FID_SIZE_CONNECTABLE; | |
531 | } else { | |
532 | type = FILEID_NILFS_WITHOUT_PARENT; | |
533 | *lenp = NILFS_FID_SIZE_NON_CONNECTABLE; | |
534 | } | |
535 | ||
536 | return type; | |
537 | } | |
538 | ||
6e1d5dcc | 539 | const struct inode_operations nilfs_dir_inode_operations = { |
d2500652 RK |
540 | .create = nilfs_create, |
541 | .lookup = nilfs_lookup, | |
542 | .link = nilfs_link, | |
543 | .unlink = nilfs_unlink, | |
544 | .symlink = nilfs_symlink, | |
545 | .mkdir = nilfs_mkdir, | |
546 | .rmdir = nilfs_rmdir, | |
547 | .mknod = nilfs_mknod, | |
548 | .rename = nilfs_rename, | |
549 | .setattr = nilfs_setattr, | |
550 | .permission = nilfs_permission, | |
622daaff | 551 | .fiemap = nilfs_fiemap, |
d2500652 RK |
552 | }; |
553 | ||
6e1d5dcc | 554 | const struct inode_operations nilfs_special_inode_operations = { |
d2500652 RK |
555 | .setattr = nilfs_setattr, |
556 | .permission = nilfs_permission, | |
557 | }; | |
558 | ||
6e1d5dcc | 559 | const struct inode_operations nilfs_symlink_inode_operations = { |
6b255391 | 560 | .get_link = page_get_link, |
dc3d3b81 | 561 | .permission = nilfs_permission, |
d2500652 | 562 | }; |
8e656fd5 RK |
563 | |
564 | const struct export_operations nilfs_export_ops = { | |
565 | .encode_fh = nilfs_encode_fh, | |
566 | .fh_to_dentry = nilfs_fh_to_dentry, | |
567 | .fh_to_parent = nilfs_fh_to_parent, | |
568 | .get_parent = nilfs_get_parent, | |
569 | }; |