Commit | Line | Data |
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ae98043f | 1 | // SPDX-License-Identifier: GPL-2.0+ |
d2500652 | 2 | /* |
94ee1d91 | 3 | * NILFS pathname lookup operations. |
d2500652 RK |
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 | */ | |
6c960e68 | 75 | static int nilfs_create(struct mnt_idmap *idmap, struct inode *dir, |
549c7297 | 76 | struct dentry *dentry, umode_t mode, 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 | |
5ebb29be | 103 | nilfs_mknod(struct mnt_idmap *idmap, struct inode *dir, |
549c7297 | 104 | struct dentry *dentry, umode_t mode, dev_t rdev) |
d2500652 RK |
105 | { |
106 | struct inode *inode; | |
107 | struct nilfs_transaction_info ti; | |
47420c79 | 108 | int err; |
d2500652 | 109 | |
d2500652 RK |
110 | err = nilfs_transaction_begin(dir->i_sb, &ti, 1); |
111 | if (err) | |
112 | return err; | |
113 | inode = nilfs_new_inode(dir, mode); | |
114 | err = PTR_ERR(inode); | |
115 | if (!IS_ERR(inode)) { | |
116 | init_special_inode(inode, inode->i_mode, rdev); | |
abdb318b | 117 | nilfs_mark_inode_dirty(inode); |
d2500652 RK |
118 | err = nilfs_add_nondir(dentry, inode); |
119 | } | |
47420c79 RK |
120 | if (!err) |
121 | err = nilfs_transaction_commit(dir->i_sb); | |
122 | else | |
123 | nilfs_transaction_abort(dir->i_sb); | |
124 | ||
125 | return err; | |
d2500652 RK |
126 | } |
127 | ||
7a77db95 | 128 | static int nilfs_symlink(struct mnt_idmap *idmap, struct inode *dir, |
549c7297 | 129 | struct dentry *dentry, const char *symname) |
d2500652 RK |
130 | { |
131 | struct nilfs_transaction_info ti; | |
132 | struct super_block *sb = dir->i_sb; | |
0c6c44cb | 133 | unsigned int l = strlen(symname) + 1; |
d2500652 | 134 | struct inode *inode; |
47420c79 | 135 | int err; |
d2500652 RK |
136 | |
137 | if (l > sb->s_blocksize) | |
138 | return -ENAMETOOLONG; | |
139 | ||
140 | err = nilfs_transaction_begin(dir->i_sb, &ti, 1); | |
141 | if (err) | |
142 | return err; | |
143 | ||
3147db89 | 144 | inode = nilfs_new_inode(dir, S_IFLNK | 0777); |
d2500652 RK |
145 | err = PTR_ERR(inode); |
146 | if (IS_ERR(inode)) | |
147 | goto out; | |
148 | ||
149 | /* slow symlink */ | |
150 | inode->i_op = &nilfs_symlink_inode_operations; | |
21fc61c7 | 151 | inode_nohighmem(inode); |
d2500652 RK |
152 | inode->i_mapping->a_ops = &nilfs_aops; |
153 | err = page_symlink(inode, symname, l); | |
154 | if (err) | |
155 | goto out_fail; | |
156 | ||
157 | /* mark_inode_dirty(inode); */ | |
9ca941d4 | 158 | /* page_symlink() do this */ |
d2500652 RK |
159 | |
160 | err = nilfs_add_nondir(dentry, inode); | |
161 | out: | |
47420c79 RK |
162 | if (!err) |
163 | err = nilfs_transaction_commit(dir->i_sb); | |
164 | else | |
165 | nilfs_transaction_abort(dir->i_sb); | |
166 | ||
167 | return err; | |
d2500652 RK |
168 | |
169 | out_fail: | |
565de406 | 170 | drop_nlink(inode); |
abdb318b | 171 | nilfs_mark_inode_dirty(inode); |
705304a8 | 172 | unlock_new_inode(inode); |
d2500652 RK |
173 | iput(inode); |
174 | goto out; | |
175 | } | |
176 | ||
177 | static int nilfs_link(struct dentry *old_dentry, struct inode *dir, | |
178 | struct dentry *dentry) | |
179 | { | |
2b0143b5 | 180 | struct inode *inode = d_inode(old_dentry); |
d2500652 | 181 | struct nilfs_transaction_info ti; |
47420c79 | 182 | int err; |
d2500652 | 183 | |
d2500652 RK |
184 | err = nilfs_transaction_begin(dir->i_sb, &ti, 1); |
185 | if (err) | |
186 | return err; | |
187 | ||
078cd827 | 188 | inode->i_ctime = current_time(inode); |
d2500652 | 189 | inode_inc_link_count(inode); |
7de9c6ee | 190 | ihold(inode); |
d2500652 | 191 | |
705304a8 RK |
192 | err = nilfs_add_link(dentry, inode); |
193 | if (!err) { | |
194 | d_instantiate(dentry, inode); | |
47420c79 | 195 | err = nilfs_transaction_commit(dir->i_sb); |
705304a8 RK |
196 | } else { |
197 | inode_dec_link_count(inode); | |
198 | iput(inode); | |
47420c79 | 199 | nilfs_transaction_abort(dir->i_sb); |
705304a8 | 200 | } |
47420c79 RK |
201 | |
202 | return err; | |
d2500652 RK |
203 | } |
204 | ||
c54bd91e | 205 | static int nilfs_mkdir(struct mnt_idmap *idmap, struct inode *dir, |
549c7297 | 206 | struct dentry *dentry, umode_t mode) |
d2500652 RK |
207 | { |
208 | struct inode *inode; | |
209 | struct nilfs_transaction_info ti; | |
47420c79 | 210 | int err; |
d2500652 | 211 | |
d2500652 RK |
212 | err = nilfs_transaction_begin(dir->i_sb, &ti, 1); |
213 | if (err) | |
214 | return err; | |
215 | ||
565de406 | 216 | inc_nlink(dir); |
d2500652 RK |
217 | |
218 | inode = nilfs_new_inode(dir, S_IFDIR | mode); | |
219 | err = PTR_ERR(inode); | |
220 | if (IS_ERR(inode)) | |
221 | goto out_dir; | |
222 | ||
223 | inode->i_op = &nilfs_dir_inode_operations; | |
224 | inode->i_fop = &nilfs_dir_operations; | |
225 | inode->i_mapping->a_ops = &nilfs_aops; | |
226 | ||
565de406 | 227 | inc_nlink(inode); |
d2500652 RK |
228 | |
229 | err = nilfs_make_empty(inode, dir); | |
230 | if (err) | |
231 | goto out_fail; | |
232 | ||
233 | err = nilfs_add_link(dentry, inode); | |
234 | if (err) | |
235 | goto out_fail; | |
236 | ||
abdb318b | 237 | nilfs_mark_inode_dirty(inode); |
1e2e547a | 238 | d_instantiate_new(dentry, inode); |
d2500652 | 239 | out: |
47420c79 RK |
240 | if (!err) |
241 | err = nilfs_transaction_commit(dir->i_sb); | |
242 | else | |
243 | nilfs_transaction_abort(dir->i_sb); | |
244 | ||
245 | return err; | |
d2500652 RK |
246 | |
247 | out_fail: | |
565de406 | 248 | drop_nlink(inode); |
565de406 | 249 | drop_nlink(inode); |
abdb318b | 250 | nilfs_mark_inode_dirty(inode); |
705304a8 | 251 | unlock_new_inode(inode); |
d2500652 RK |
252 | iput(inode); |
253 | out_dir: | |
565de406 | 254 | drop_nlink(dir); |
abdb318b | 255 | nilfs_mark_inode_dirty(dir); |
d2500652 RK |
256 | goto out; |
257 | } | |
258 | ||
4cd76c3c | 259 | static int nilfs_do_unlink(struct inode *dir, struct dentry *dentry) |
d2500652 RK |
260 | { |
261 | struct inode *inode; | |
262 | struct nilfs_dir_entry *de; | |
263 | struct page *page; | |
47420c79 | 264 | int err; |
d2500652 | 265 | |
d2500652 | 266 | err = -ENOENT; |
0319003d | 267 | de = nilfs_find_entry(dir, &dentry->d_name, &page); |
d2500652 RK |
268 | if (!de) |
269 | goto out; | |
270 | ||
2b0143b5 | 271 | inode = d_inode(dentry); |
d2500652 RK |
272 | err = -EIO; |
273 | if (le64_to_cpu(de->inode) != inode->i_ino) | |
274 | goto out; | |
275 | ||
276 | if (!inode->i_nlink) { | |
a1d0747a JP |
277 | nilfs_warn(inode->i_sb, |
278 | "deleting nonexistent file (ino=%lu), %d", | |
279 | inode->i_ino, inode->i_nlink); | |
bfe86848 | 280 | set_nlink(inode, 1); |
d2500652 RK |
281 | } |
282 | err = nilfs_delete_entry(de, page); | |
283 | if (err) | |
284 | goto out; | |
285 | ||
286 | inode->i_ctime = dir->i_ctime; | |
565de406 | 287 | drop_nlink(inode); |
d2500652 RK |
288 | err = 0; |
289 | out: | |
4cd76c3c JS |
290 | return err; |
291 | } | |
292 | ||
293 | static int nilfs_unlink(struct inode *dir, struct dentry *dentry) | |
294 | { | |
295 | struct nilfs_transaction_info ti; | |
296 | int err; | |
297 | ||
298 | err = nilfs_transaction_begin(dir->i_sb, &ti, 0); | |
299 | if (err) | |
300 | return err; | |
301 | ||
302 | err = nilfs_do_unlink(dir, dentry); | |
303 | ||
304 | if (!err) { | |
abdb318b | 305 | nilfs_mark_inode_dirty(dir); |
2b0143b5 | 306 | nilfs_mark_inode_dirty(d_inode(dentry)); |
47420c79 | 307 | err = nilfs_transaction_commit(dir->i_sb); |
4cd76c3c | 308 | } else |
47420c79 RK |
309 | nilfs_transaction_abort(dir->i_sb); |
310 | ||
311 | return err; | |
d2500652 RK |
312 | } |
313 | ||
314 | static int nilfs_rmdir(struct inode *dir, struct dentry *dentry) | |
315 | { | |
2b0143b5 | 316 | struct inode *inode = d_inode(dentry); |
d2500652 | 317 | struct nilfs_transaction_info ti; |
47420c79 | 318 | int err; |
d2500652 RK |
319 | |
320 | err = nilfs_transaction_begin(dir->i_sb, &ti, 0); | |
321 | if (err) | |
322 | return err; | |
323 | ||
324 | err = -ENOTEMPTY; | |
325 | if (nilfs_empty_dir(inode)) { | |
4cd76c3c | 326 | err = nilfs_do_unlink(dir, dentry); |
d2500652 RK |
327 | if (!err) { |
328 | inode->i_size = 0; | |
565de406 | 329 | drop_nlink(inode); |
abdb318b | 330 | nilfs_mark_inode_dirty(inode); |
565de406 | 331 | drop_nlink(dir); |
abdb318b | 332 | nilfs_mark_inode_dirty(dir); |
d2500652 RK |
333 | } |
334 | } | |
47420c79 RK |
335 | if (!err) |
336 | err = nilfs_transaction_commit(dir->i_sb); | |
337 | else | |
338 | nilfs_transaction_abort(dir->i_sb); | |
339 | ||
340 | return err; | |
d2500652 RK |
341 | } |
342 | ||
e18275ae | 343 | static int nilfs_rename(struct mnt_idmap *idmap, |
549c7297 CB |
344 | struct inode *old_dir, struct dentry *old_dentry, |
345 | struct inode *new_dir, struct dentry *new_dentry, | |
f03b8ad8 | 346 | unsigned int flags) |
d2500652 | 347 | { |
2b0143b5 DH |
348 | struct inode *old_inode = d_inode(old_dentry); |
349 | struct inode *new_inode = d_inode(new_dentry); | |
d2500652 RK |
350 | struct page *dir_page = NULL; |
351 | struct nilfs_dir_entry *dir_de = NULL; | |
352 | struct page *old_page; | |
353 | struct nilfs_dir_entry *old_de; | |
354 | struct nilfs_transaction_info ti; | |
355 | int err; | |
356 | ||
f03b8ad8 MS |
357 | if (flags & ~RENAME_NOREPLACE) |
358 | return -EINVAL; | |
359 | ||
d2500652 RK |
360 | err = nilfs_transaction_begin(old_dir->i_sb, &ti, 1); |
361 | if (unlikely(err)) | |
362 | return err; | |
363 | ||
364 | err = -ENOENT; | |
0319003d | 365 | old_de = nilfs_find_entry(old_dir, &old_dentry->d_name, &old_page); |
d2500652 RK |
366 | if (!old_de) |
367 | goto out; | |
368 | ||
369 | if (S_ISDIR(old_inode->i_mode)) { | |
370 | err = -EIO; | |
371 | dir_de = nilfs_dotdot(old_inode, &dir_page); | |
372 | if (!dir_de) | |
373 | goto out_old; | |
374 | } | |
375 | ||
376 | if (new_inode) { | |
377 | struct page *new_page; | |
378 | struct nilfs_dir_entry *new_de; | |
379 | ||
380 | err = -ENOTEMPTY; | |
381 | if (dir_de && !nilfs_empty_dir(new_inode)) | |
382 | goto out_dir; | |
383 | ||
384 | err = -ENOENT; | |
0319003d | 385 | new_de = nilfs_find_entry(new_dir, &new_dentry->d_name, &new_page); |
d2500652 RK |
386 | if (!new_de) |
387 | goto out_dir; | |
d2500652 | 388 | nilfs_set_link(new_dir, new_de, new_page, old_inode); |
abdb318b | 389 | nilfs_mark_inode_dirty(new_dir); |
078cd827 | 390 | new_inode->i_ctime = current_time(new_inode); |
d2500652 RK |
391 | if (dir_de) |
392 | drop_nlink(new_inode); | |
565de406 | 393 | drop_nlink(new_inode); |
abdb318b | 394 | nilfs_mark_inode_dirty(new_inode); |
d2500652 | 395 | } else { |
d2500652 | 396 | err = nilfs_add_link(new_dentry, old_inode); |
30eb43d3 | 397 | if (err) |
d2500652 | 398 | goto out_dir; |
565de406 JS |
399 | if (dir_de) { |
400 | inc_nlink(new_dir); | |
abdb318b | 401 | nilfs_mark_inode_dirty(new_dir); |
565de406 | 402 | } |
d2500652 RK |
403 | } |
404 | ||
405 | /* | |
406 | * Like most other Unix systems, set the ctime for inodes on a | |
407 | * rename. | |
d2500652 | 408 | */ |
078cd827 | 409 | old_inode->i_ctime = current_time(old_inode); |
d2500652 RK |
410 | |
411 | nilfs_delete_entry(old_de, old_page); | |
d2500652 RK |
412 | |
413 | if (dir_de) { | |
414 | nilfs_set_link(old_inode, dir_de, dir_page, new_dir); | |
565de406 | 415 | drop_nlink(old_dir); |
d2500652 | 416 | } |
abdb318b JS |
417 | nilfs_mark_inode_dirty(old_dir); |
418 | nilfs_mark_inode_dirty(old_inode); | |
d2500652 | 419 | |
47420c79 | 420 | err = nilfs_transaction_commit(old_dir->i_sb); |
d2500652 RK |
421 | return err; |
422 | ||
423 | out_dir: | |
424 | if (dir_de) { | |
425 | kunmap(dir_page); | |
09cbfeaf | 426 | put_page(dir_page); |
d2500652 RK |
427 | } |
428 | out_old: | |
429 | kunmap(old_page); | |
09cbfeaf | 430 | put_page(old_page); |
d2500652 | 431 | out: |
47420c79 | 432 | nilfs_transaction_abort(old_dir->i_sb); |
d2500652 RK |
433 | return err; |
434 | } | |
435 | ||
8e656fd5 RK |
436 | /* |
437 | * Export operations | |
438 | */ | |
439 | static struct dentry *nilfs_get_parent(struct dentry *child) | |
440 | { | |
441 | unsigned long ino; | |
442 | struct inode *inode; | |
8e656fd5 RK |
443 | struct nilfs_root *root; |
444 | ||
80e5d1ff | 445 | ino = nilfs_inode_by_name(d_inode(child), &dotdot_name); |
8e656fd5 RK |
446 | if (!ino) |
447 | return ERR_PTR(-ENOENT); | |
448 | ||
2b0143b5 | 449 | root = NILFS_I(d_inode(child))->i_root; |
8e656fd5 | 450 | |
fc64005c | 451 | inode = nilfs_iget(child->d_sb, root, ino); |
8e656fd5 RK |
452 | if (IS_ERR(inode)) |
453 | return ERR_CAST(inode); | |
454 | ||
455 | return d_obtain_alias(inode); | |
456 | } | |
457 | ||
458 | static struct dentry *nilfs_get_dentry(struct super_block *sb, u64 cno, | |
459 | u64 ino, u32 gen) | |
460 | { | |
461 | struct nilfs_root *root; | |
462 | struct inode *inode; | |
463 | ||
464 | if (ino < NILFS_FIRST_INO(sb) && ino != NILFS_ROOT_INO) | |
465 | return ERR_PTR(-ESTALE); | |
466 | ||
e3154e97 | 467 | root = nilfs_lookup_root(sb->s_fs_info, cno); |
8e656fd5 RK |
468 | if (!root) |
469 | return ERR_PTR(-ESTALE); | |
470 | ||
471 | inode = nilfs_iget(sb, root, ino); | |
472 | nilfs_put_root(root); | |
473 | ||
474 | if (IS_ERR(inode)) | |
475 | return ERR_CAST(inode); | |
476 | if (gen && inode->i_generation != gen) { | |
477 | iput(inode); | |
478 | return ERR_PTR(-ESTALE); | |
479 | } | |
480 | return d_obtain_alias(inode); | |
481 | } | |
482 | ||
483 | static struct dentry *nilfs_fh_to_dentry(struct super_block *sb, struct fid *fh, | |
484 | int fh_len, int fh_type) | |
485 | { | |
486 | struct nilfs_fid *fid = (struct nilfs_fid *)fh; | |
487 | ||
f73c2f1f | 488 | if (fh_len < NILFS_FID_SIZE_NON_CONNECTABLE || |
8e656fd5 RK |
489 | (fh_type != FILEID_NILFS_WITH_PARENT && |
490 | fh_type != FILEID_NILFS_WITHOUT_PARENT)) | |
491 | return NULL; | |
492 | ||
493 | return nilfs_get_dentry(sb, fid->cno, fid->ino, fid->gen); | |
494 | } | |
495 | ||
496 | static struct dentry *nilfs_fh_to_parent(struct super_block *sb, struct fid *fh, | |
497 | int fh_len, int fh_type) | |
498 | { | |
499 | struct nilfs_fid *fid = (struct nilfs_fid *)fh; | |
500 | ||
f73c2f1f | 501 | if (fh_len < NILFS_FID_SIZE_CONNECTABLE || |
8e656fd5 RK |
502 | fh_type != FILEID_NILFS_WITH_PARENT) |
503 | return NULL; | |
504 | ||
505 | return nilfs_get_dentry(sb, fid->cno, fid->parent_ino, fid->parent_gen); | |
506 | } | |
507 | ||
b0b0382b AV |
508 | static int nilfs_encode_fh(struct inode *inode, __u32 *fh, int *lenp, |
509 | struct inode *parent) | |
8e656fd5 RK |
510 | { |
511 | struct nilfs_fid *fid = (struct nilfs_fid *)fh; | |
8e656fd5 RK |
512 | struct nilfs_root *root = NILFS_I(inode)->i_root; |
513 | int type; | |
514 | ||
b0b0382b AV |
515 | if (parent && *lenp < NILFS_FID_SIZE_CONNECTABLE) { |
516 | *lenp = NILFS_FID_SIZE_CONNECTABLE; | |
94e07a75 | 517 | return FILEID_INVALID; |
b0b0382b AV |
518 | } |
519 | if (*lenp < NILFS_FID_SIZE_NON_CONNECTABLE) { | |
520 | *lenp = NILFS_FID_SIZE_NON_CONNECTABLE; | |
94e07a75 | 521 | return FILEID_INVALID; |
b0b0382b | 522 | } |
8e656fd5 RK |
523 | |
524 | fid->cno = root->cno; | |
525 | fid->ino = inode->i_ino; | |
526 | fid->gen = inode->i_generation; | |
527 | ||
b0b0382b | 528 | if (parent) { |
8e656fd5 RK |
529 | fid->parent_ino = parent->i_ino; |
530 | fid->parent_gen = parent->i_generation; | |
8e656fd5 RK |
531 | type = FILEID_NILFS_WITH_PARENT; |
532 | *lenp = NILFS_FID_SIZE_CONNECTABLE; | |
533 | } else { | |
534 | type = FILEID_NILFS_WITHOUT_PARENT; | |
535 | *lenp = NILFS_FID_SIZE_NON_CONNECTABLE; | |
536 | } | |
537 | ||
538 | return type; | |
539 | } | |
540 | ||
6e1d5dcc | 541 | const struct inode_operations nilfs_dir_inode_operations = { |
d2500652 RK |
542 | .create = nilfs_create, |
543 | .lookup = nilfs_lookup, | |
544 | .link = nilfs_link, | |
545 | .unlink = nilfs_unlink, | |
546 | .symlink = nilfs_symlink, | |
547 | .mkdir = nilfs_mkdir, | |
548 | .rmdir = nilfs_rmdir, | |
549 | .mknod = nilfs_mknod, | |
550 | .rename = nilfs_rename, | |
551 | .setattr = nilfs_setattr, | |
552 | .permission = nilfs_permission, | |
622daaff | 553 | .fiemap = nilfs_fiemap, |
7c7c436e MS |
554 | .fileattr_get = nilfs_fileattr_get, |
555 | .fileattr_set = nilfs_fileattr_set, | |
d2500652 RK |
556 | }; |
557 | ||
6e1d5dcc | 558 | const struct inode_operations nilfs_special_inode_operations = { |
d2500652 RK |
559 | .setattr = nilfs_setattr, |
560 | .permission = nilfs_permission, | |
561 | }; | |
562 | ||
6e1d5dcc | 563 | const struct inode_operations nilfs_symlink_inode_operations = { |
6b255391 | 564 | .get_link = page_get_link, |
dc3d3b81 | 565 | .permission = nilfs_permission, |
d2500652 | 566 | }; |
8e656fd5 RK |
567 | |
568 | const struct export_operations nilfs_export_ops = { | |
569 | .encode_fh = nilfs_encode_fh, | |
570 | .fh_to_dentry = nilfs_fh_to_dentry, | |
571 | .fh_to_parent = nilfs_fh_to_parent, | |
572 | .get_parent = nilfs_get_parent, | |
573 | }; |