Commit | Line | Data |
---|---|---|
2bad8471 EVH |
1 | /* |
2 | * linux/fs/9p/vfs_inode.c | |
3 | * | |
73c592b9 | 4 | * This file contains vfs inode ops for the 9P2000 protocol. |
2bad8471 EVH |
5 | * |
6 | * Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com> | |
7 | * Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov> | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
42e8c509 EVH |
10 | * it under the terms of the GNU General Public License version 2 |
11 | * as published by the Free Software Foundation. | |
2bad8471 EVH |
12 | * |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to: | |
20 | * Free Software Foundation | |
21 | * 51 Franklin Street, Fifth Floor | |
22 | * Boston, MA 02111-1301 USA | |
23 | * | |
24 | */ | |
25 | ||
26 | #include <linux/module.h> | |
27 | #include <linux/errno.h> | |
28 | #include <linux/fs.h> | |
29 | #include <linux/file.h> | |
30 | #include <linux/pagemap.h> | |
31 | #include <linux/stat.h> | |
32 | #include <linux/string.h> | |
2bad8471 EVH |
33 | #include <linux/inet.h> |
34 | #include <linux/namei.h> | |
35 | #include <linux/idr.h> | |
e8edc6e0 | 36 | #include <linux/sched.h> |
5a0e3ad6 | 37 | #include <linux/slab.h> |
ebf46264 | 38 | #include <linux/xattr.h> |
85ff872d | 39 | #include <linux/posix_acl.h> |
bd238fb4 LI |
40 | #include <net/9p/9p.h> |
41 | #include <net/9p/client.h> | |
2bad8471 | 42 | |
2bad8471 | 43 | #include "v9fs.h" |
2bad8471 | 44 | #include "v9fs_vfs.h" |
2bad8471 | 45 | #include "fid.h" |
60e78d2c | 46 | #include "cache.h" |
ebf46264 | 47 | #include "xattr.h" |
85ff872d | 48 | #include "acl.h" |
2bad8471 | 49 | |
754661f1 | 50 | static const struct inode_operations v9fs_dir_inode_operations; |
9b6533c9 SK |
51 | static const struct inode_operations v9fs_dir_inode_operations_dotu; |
52 | static const struct inode_operations v9fs_dir_inode_operations_dotl; | |
754661f1 | 53 | static const struct inode_operations v9fs_file_inode_operations; |
9b6533c9 | 54 | static const struct inode_operations v9fs_file_inode_operations_dotl; |
754661f1 | 55 | static const struct inode_operations v9fs_symlink_inode_operations; |
9b6533c9 | 56 | static const struct inode_operations v9fs_symlink_inode_operations_dotl; |
2bad8471 EVH |
57 | |
58 | /** | |
59 | * unixmode2p9mode - convert unix mode bits to plan 9 | |
60 | * @v9ses: v9fs session information | |
61 | * @mode: mode to convert | |
62 | * | |
63 | */ | |
64 | ||
73c592b9 | 65 | static int unixmode2p9mode(struct v9fs_session_info *v9ses, int mode) |
2bad8471 EVH |
66 | { |
67 | int res; | |
68 | res = mode & 0777; | |
69 | if (S_ISDIR(mode)) | |
bd238fb4 | 70 | res |= P9_DMDIR; |
dd6102fb | 71 | if (v9fs_proto_dotu(v9ses)) { |
2bad8471 | 72 | if (S_ISLNK(mode)) |
bd238fb4 | 73 | res |= P9_DMSYMLINK; |
2bad8471 EVH |
74 | if (v9ses->nodev == 0) { |
75 | if (S_ISSOCK(mode)) | |
bd238fb4 | 76 | res |= P9_DMSOCKET; |
2bad8471 | 77 | if (S_ISFIFO(mode)) |
bd238fb4 | 78 | res |= P9_DMNAMEDPIPE; |
2bad8471 | 79 | if (S_ISBLK(mode)) |
bd238fb4 | 80 | res |= P9_DMDEVICE; |
2bad8471 | 81 | if (S_ISCHR(mode)) |
bd238fb4 | 82 | res |= P9_DMDEVICE; |
2bad8471 EVH |
83 | } |
84 | ||
85 | if ((mode & S_ISUID) == S_ISUID) | |
bd238fb4 | 86 | res |= P9_DMSETUID; |
2bad8471 | 87 | if ((mode & S_ISGID) == S_ISGID) |
bd238fb4 | 88 | res |= P9_DMSETGID; |
d199d652 AL |
89 | if ((mode & S_ISVTX) == S_ISVTX) |
90 | res |= P9_DMSETVTX; | |
bd238fb4 LI |
91 | if ((mode & P9_DMLINK)) |
92 | res |= P9_DMLINK; | |
2bad8471 EVH |
93 | } |
94 | ||
95 | return res; | |
96 | } | |
97 | ||
98 | /** | |
99 | * p9mode2unixmode- convert plan9 mode bits to unix mode bits | |
100 | * @v9ses: v9fs session information | |
101 | * @mode: mode to convert | |
102 | * | |
103 | */ | |
104 | ||
73c592b9 | 105 | static int p9mode2unixmode(struct v9fs_session_info *v9ses, int mode) |
2bad8471 EVH |
106 | { |
107 | int res; | |
108 | ||
109 | res = mode & 0777; | |
110 | ||
bd238fb4 | 111 | if ((mode & P9_DMDIR) == P9_DMDIR) |
2bad8471 | 112 | res |= S_IFDIR; |
dd6102fb | 113 | else if ((mode & P9_DMSYMLINK) && (v9fs_proto_dotu(v9ses))) |
2bad8471 | 114 | res |= S_IFLNK; |
dd6102fb | 115 | else if ((mode & P9_DMSOCKET) && (v9fs_proto_dotu(v9ses)) |
2bad8471 EVH |
116 | && (v9ses->nodev == 0)) |
117 | res |= S_IFSOCK; | |
dd6102fb | 118 | else if ((mode & P9_DMNAMEDPIPE) && (v9fs_proto_dotu(v9ses)) |
2bad8471 EVH |
119 | && (v9ses->nodev == 0)) |
120 | res |= S_IFIFO; | |
dd6102fb | 121 | else if ((mode & P9_DMDEVICE) && (v9fs_proto_dotu(v9ses)) |
2bad8471 EVH |
122 | && (v9ses->nodev == 0)) |
123 | res |= S_IFBLK; | |
124 | else | |
125 | res |= S_IFREG; | |
126 | ||
dd6102fb | 127 | if (v9fs_proto_dotu(v9ses)) { |
bd238fb4 | 128 | if ((mode & P9_DMSETUID) == P9_DMSETUID) |
2bad8471 EVH |
129 | res |= S_ISUID; |
130 | ||
bd238fb4 | 131 | if ((mode & P9_DMSETGID) == P9_DMSETGID) |
2bad8471 | 132 | res |= S_ISGID; |
d199d652 AL |
133 | |
134 | if ((mode & P9_DMSETVTX) == P9_DMSETVTX) | |
135 | res |= S_ISVTX; | |
2bad8471 EVH |
136 | } |
137 | ||
138 | return res; | |
139 | } | |
140 | ||
ee443996 EVH |
141 | /** |
142 | * v9fs_uflags2omode- convert posix open flags to plan 9 mode bits | |
143 | * @uflags: flags to convert | |
2e4bef41 | 144 | * @extended: if .u extensions are active |
ee443996 EVH |
145 | */ |
146 | ||
2e4bef41 | 147 | int v9fs_uflags2omode(int uflags, int extended) |
6a3124a3 LI |
148 | { |
149 | int ret; | |
150 | ||
151 | ret = 0; | |
152 | switch (uflags&3) { | |
153 | default: | |
154 | case O_RDONLY: | |
bd238fb4 | 155 | ret = P9_OREAD; |
6a3124a3 LI |
156 | break; |
157 | ||
158 | case O_WRONLY: | |
bd238fb4 | 159 | ret = P9_OWRITE; |
6a3124a3 LI |
160 | break; |
161 | ||
162 | case O_RDWR: | |
bd238fb4 | 163 | ret = P9_ORDWR; |
6a3124a3 LI |
164 | break; |
165 | } | |
166 | ||
6a3124a3 | 167 | if (uflags & O_TRUNC) |
bd238fb4 | 168 | ret |= P9_OTRUNC; |
6a3124a3 | 169 | |
2e4bef41 EVH |
170 | if (extended) { |
171 | if (uflags & O_EXCL) | |
172 | ret |= P9_OEXCL; | |
173 | ||
174 | if (uflags & O_APPEND) | |
175 | ret |= P9_OAPPEND; | |
176 | } | |
6a3124a3 LI |
177 | |
178 | return ret; | |
179 | } | |
180 | ||
2bad8471 | 181 | /** |
531b1094 | 182 | * v9fs_blank_wstat - helper function to setup a 9P stat structure |
531b1094 | 183 | * @wstat: structure to initialize |
2bad8471 EVH |
184 | * |
185 | */ | |
186 | ||
7a4439c4 | 187 | void |
bd238fb4 | 188 | v9fs_blank_wstat(struct p9_wstat *wstat) |
2bad8471 | 189 | { |
531b1094 LI |
190 | wstat->type = ~0; |
191 | wstat->dev = ~0; | |
192 | wstat->qid.type = ~0; | |
193 | wstat->qid.version = ~0; | |
194 | *((long long *)&wstat->qid.path) = ~0; | |
195 | wstat->mode = ~0; | |
196 | wstat->atime = ~0; | |
197 | wstat->mtime = ~0; | |
198 | wstat->length = ~0; | |
199 | wstat->name = NULL; | |
200 | wstat->uid = NULL; | |
201 | wstat->gid = NULL; | |
202 | wstat->muid = NULL; | |
203 | wstat->n_uid = ~0; | |
204 | wstat->n_gid = ~0; | |
205 | wstat->n_muid = ~0; | |
206 | wstat->extension = NULL; | |
2bad8471 EVH |
207 | } |
208 | ||
60e78d2c AK |
209 | #ifdef CONFIG_9P_FSCACHE |
210 | /** | |
211 | * v9fs_alloc_inode - helper function to allocate an inode | |
212 | * This callback is executed before setting up the inode so that we | |
213 | * can associate a vcookie with each inode. | |
214 | * | |
215 | */ | |
216 | ||
217 | struct inode *v9fs_alloc_inode(struct super_block *sb) | |
218 | { | |
219 | struct v9fs_cookie *vcookie; | |
220 | vcookie = (struct v9fs_cookie *)kmem_cache_alloc(vcookie_cache, | |
221 | GFP_KERNEL); | |
222 | if (!vcookie) | |
223 | return NULL; | |
224 | ||
225 | vcookie->fscache = NULL; | |
226 | vcookie->qid = NULL; | |
227 | spin_lock_init(&vcookie->lock); | |
228 | return &vcookie->inode; | |
229 | } | |
230 | ||
231 | /** | |
232 | * v9fs_destroy_inode - destroy an inode | |
233 | * | |
234 | */ | |
235 | ||
236 | void v9fs_destroy_inode(struct inode *inode) | |
237 | { | |
238 | kmem_cache_free(vcookie_cache, v9fs_inode2cookie(inode)); | |
239 | } | |
240 | #endif | |
241 | ||
09d34ee5 EVH |
242 | /** |
243 | * v9fs_get_fsgid_for_create - Helper function to get the gid for creating a | |
244 | * new file system object. This checks the S_ISGID to determine the owning | |
245 | * group of the new file system object. | |
246 | */ | |
247 | ||
248 | static gid_t v9fs_get_fsgid_for_create(struct inode *dir_inode) | |
249 | { | |
250 | BUG_ON(dir_inode == NULL); | |
251 | ||
252 | if (dir_inode->i_mode & S_ISGID) { | |
253 | /* set_gid bit is set.*/ | |
254 | return dir_inode->i_gid; | |
255 | } | |
256 | return current_fsgid(); | |
257 | } | |
258 | ||
259 | /** | |
260 | * v9fs_dentry_from_dir_inode - helper function to get the dentry from | |
261 | * dir inode. | |
262 | * | |
263 | */ | |
264 | ||
ea137533 | 265 | static struct dentry *v9fs_dentry_from_dir_inode(struct inode *inode) |
09d34ee5 EVH |
266 | { |
267 | struct dentry *dentry; | |
268 | ||
269 | spin_lock(&dcache_lock); | |
270 | /* Directory should have only one entry. */ | |
271 | BUG_ON(S_ISDIR(inode->i_mode) && !list_is_singular(&inode->i_dentry)); | |
272 | dentry = list_entry(inode->i_dentry.next, struct dentry, d_alias); | |
273 | spin_unlock(&dcache_lock); | |
274 | return dentry; | |
275 | } | |
276 | ||
2bad8471 EVH |
277 | /** |
278 | * v9fs_get_inode - helper function to setup an inode | |
279 | * @sb: superblock | |
280 | * @mode: mode to setup inode with | |
281 | * | |
282 | */ | |
283 | ||
284 | struct inode *v9fs_get_inode(struct super_block *sb, int mode) | |
285 | { | |
2bb54115 | 286 | int err; |
6a3124a3 | 287 | struct inode *inode; |
b501611a | 288 | struct v9fs_session_info *v9ses = sb->s_fs_info; |
2bad8471 | 289 | |
bd238fb4 | 290 | P9_DPRINTK(P9_DEBUG_VFS, "super block: %p mode: %o\n", sb, mode); |
2bad8471 EVH |
291 | |
292 | inode = new_inode(sb); | |
2bb54115 AK |
293 | if (!inode) { |
294 | P9_EPRINTK(KERN_WARNING, "Problem allocating inode\n"); | |
48559b4c | 295 | return ERR_PTR(-ENOMEM); |
2bb54115 AK |
296 | } |
297 | ||
217f206d | 298 | inode_init_owner(inode, NULL, mode); |
2bb54115 AK |
299 | inode->i_blocks = 0; |
300 | inode->i_rdev = 0; | |
301 | inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME; | |
302 | inode->i_mapping->a_ops = &v9fs_addr_operations; | |
303 | ||
304 | switch (mode & S_IFMT) { | |
305 | case S_IFIFO: | |
306 | case S_IFBLK: | |
307 | case S_IFCHR: | |
308 | case S_IFSOCK: | |
4b43516a MK |
309 | if (v9fs_proto_dotl(v9ses)) { |
310 | inode->i_op = &v9fs_file_inode_operations_dotl; | |
311 | inode->i_fop = &v9fs_file_operations_dotl; | |
312 | } else if (v9fs_proto_dotu(v9ses)) { | |
313 | inode->i_op = &v9fs_file_inode_operations; | |
314 | inode->i_fop = &v9fs_file_operations; | |
315 | } else { | |
bd238fb4 | 316 | P9_DPRINTK(P9_DEBUG_ERROR, |
2bb54115 AK |
317 | "special files without extended mode\n"); |
318 | err = -EINVAL; | |
319 | goto error; | |
2bad8471 | 320 | } |
2bb54115 AK |
321 | init_special_inode(inode, inode->i_mode, inode->i_rdev); |
322 | break; | |
323 | case S_IFREG: | |
9b6533c9 SK |
324 | if (v9fs_proto_dotl(v9ses)) { |
325 | inode->i_op = &v9fs_file_inode_operations_dotl; | |
326 | inode->i_fop = &v9fs_file_operations_dotl; | |
327 | } else { | |
328 | inode->i_op = &v9fs_file_inode_operations; | |
329 | inode->i_fop = &v9fs_file_operations; | |
330 | } | |
331 | ||
2bb54115 | 332 | break; |
9b6533c9 | 333 | |
2bb54115 | 334 | case S_IFLNK: |
9b6533c9 SK |
335 | if (!v9fs_proto_dotu(v9ses) && !v9fs_proto_dotl(v9ses)) { |
336 | P9_DPRINTK(P9_DEBUG_ERROR, "extended modes used with " | |
337 | "legacy protocol.\n"); | |
2bb54115 AK |
338 | err = -EINVAL; |
339 | goto error; | |
340 | } | |
9b6533c9 SK |
341 | |
342 | if (v9fs_proto_dotl(v9ses)) | |
343 | inode->i_op = &v9fs_symlink_inode_operations_dotl; | |
344 | else | |
345 | inode->i_op = &v9fs_symlink_inode_operations; | |
346 | ||
2bb54115 AK |
347 | break; |
348 | case S_IFDIR: | |
349 | inc_nlink(inode); | |
9b6533c9 SK |
350 | if (v9fs_proto_dotl(v9ses)) |
351 | inode->i_op = &v9fs_dir_inode_operations_dotl; | |
352 | else if (v9fs_proto_dotu(v9ses)) | |
353 | inode->i_op = &v9fs_dir_inode_operations_dotu; | |
2bb54115 AK |
354 | else |
355 | inode->i_op = &v9fs_dir_inode_operations; | |
9b6533c9 SK |
356 | |
357 | if (v9fs_proto_dotl(v9ses)) | |
358 | inode->i_fop = &v9fs_dir_operations_dotl; | |
359 | else | |
360 | inode->i_fop = &v9fs_dir_operations; | |
361 | ||
2bb54115 AK |
362 | break; |
363 | default: | |
364 | P9_DPRINTK(P9_DEBUG_ERROR, "BAD mode 0x%x S_IFMT 0x%x\n", | |
365 | mode, mode & S_IFMT); | |
366 | err = -EINVAL; | |
367 | goto error; | |
2bad8471 | 368 | } |
2bb54115 | 369 | |
2bad8471 | 370 | return inode; |
2bb54115 AK |
371 | |
372 | error: | |
373 | iput(inode); | |
374 | return ERR_PTR(err); | |
2bad8471 EVH |
375 | } |
376 | ||
bd238fb4 | 377 | /* |
6a3124a3 LI |
378 | static struct v9fs_fid* |
379 | v9fs_clone_walk(struct v9fs_session_info *v9ses, u32 fid, struct dentry *dentry) | |
380 | { | |
381 | int err; | |
736c4b85 | 382 | int nfid; |
6a3124a3 LI |
383 | struct v9fs_fid *ret; |
384 | struct v9fs_fcall *fcall; | |
385 | ||
386 | nfid = v9fs_get_idpool(&v9ses->fidpool); | |
387 | if (nfid < 0) { | |
0b8dd177 | 388 | eprintk(KERN_WARNING, "no free fids available\n"); |
731805b4 | 389 | return ERR_PTR(-ENOSPC); |
0b8dd177 LI |
390 | } |
391 | ||
6a3124a3 LI |
392 | err = v9fs_t_walk(v9ses, fid, nfid, (char *) dentry->d_name.name, |
393 | &fcall); | |
394 | ||
395 | if (err < 0) { | |
41e5a6ac LI |
396 | if (fcall && fcall->id == RWALK) |
397 | goto clunk_fid; | |
398 | ||
6a3124a3 LI |
399 | PRINT_FCALL_ERROR("walk error", fcall); |
400 | v9fs_put_idpool(nfid, &v9ses->fidpool); | |
401 | goto error; | |
0b8dd177 | 402 | } |
6a3124a3 | 403 | |
3cf6429a LI |
404 | kfree(fcall); |
405 | fcall = NULL; | |
6a3124a3 LI |
406 | ret = v9fs_fid_create(v9ses, nfid); |
407 | if (!ret) { | |
408 | err = -ENOMEM; | |
409 | goto clunk_fid; | |
410 | } | |
0b8dd177 | 411 | |
6a3124a3 LI |
412 | err = v9fs_fid_insert(ret, dentry); |
413 | if (err < 0) { | |
414 | v9fs_fid_destroy(ret); | |
415 | goto clunk_fid; | |
0b8dd177 | 416 | } |
2bad8471 | 417 | |
6a3124a3 | 418 | return ret; |
2bad8471 | 419 | |
6a3124a3 LI |
420 | clunk_fid: |
421 | v9fs_t_clunk(v9ses, nfid); | |
2bad8471 | 422 | |
6a3124a3 LI |
423 | error: |
424 | kfree(fcall); | |
425 | return ERR_PTR(err); | |
426 | } | |
bd238fb4 | 427 | */ |
2bad8471 | 428 | |
60e78d2c AK |
429 | |
430 | /** | |
431 | * v9fs_clear_inode - release an inode | |
432 | * @inode: inode to release | |
433 | * | |
434 | */ | |
b57922d9 | 435 | void v9fs_evict_inode(struct inode *inode) |
60e78d2c | 436 | { |
b57922d9 AV |
437 | truncate_inode_pages(inode->i_mapping, 0); |
438 | end_writeback(inode); | |
60e78d2c AK |
439 | filemap_fdatawrite(inode->i_mapping); |
440 | ||
441 | #ifdef CONFIG_9P_FSCACHE | |
442 | v9fs_cache_inode_put_cookie(inode); | |
443 | #endif | |
444 | } | |
445 | ||
5174fdab | 446 | static struct inode * |
f0853122 | 447 | v9fs_inode(struct v9fs_session_info *v9ses, struct p9_fid *fid, |
6a3124a3 LI |
448 | struct super_block *sb) |
449 | { | |
450 | int err, umode; | |
f0853122 | 451 | struct inode *ret = NULL; |
51a87c55 | 452 | struct p9_wstat *st; |
531b1094 | 453 | |
bd238fb4 | 454 | st = p9_client_stat(fid); |
02bc3567 AK |
455 | if (IS_ERR(st)) |
456 | return ERR_CAST(st); | |
2bad8471 | 457 | |
bd238fb4 | 458 | umode = p9mode2unixmode(v9ses, st->mode); |
6a3124a3 LI |
459 | ret = v9fs_get_inode(sb, umode); |
460 | if (IS_ERR(ret)) { | |
461 | err = PTR_ERR(ret); | |
6a3124a3 LI |
462 | goto error; |
463 | } | |
2bad8471 | 464 | |
bd238fb4 LI |
465 | v9fs_stat2inode(st, ret, sb); |
466 | ret->i_ino = v9fs_qid2ino(&st->qid); | |
60e78d2c AK |
467 | |
468 | #ifdef CONFIG_9P_FSCACHE | |
469 | v9fs_vcookie_set_qid(ret, &st->qid); | |
470 | v9fs_cache_inode_get_cookie(ret); | |
471 | #endif | |
02bc3567 | 472 | p9stat_free(st); |
bd238fb4 | 473 | kfree(st); |
6a3124a3 | 474 | return ret; |
6a3124a3 | 475 | error: |
02bc3567 | 476 | p9stat_free(st); |
bd238fb4 | 477 | kfree(st); |
6a3124a3 | 478 | return ERR_PTR(err); |
2bad8471 EVH |
479 | } |
480 | ||
f0853122 SK |
481 | static struct inode * |
482 | v9fs_inode_dotl(struct v9fs_session_info *v9ses, struct p9_fid *fid, | |
483 | struct super_block *sb) | |
484 | { | |
485 | struct inode *ret = NULL; | |
486 | int err; | |
487 | struct p9_stat_dotl *st; | |
488 | ||
489 | st = p9_client_getattr_dotl(fid, P9_STATS_BASIC); | |
490 | if (IS_ERR(st)) | |
491 | return ERR_CAST(st); | |
492 | ||
493 | ret = v9fs_get_inode(sb, st->st_mode); | |
494 | if (IS_ERR(ret)) { | |
495 | err = PTR_ERR(ret); | |
496 | goto error; | |
497 | } | |
498 | ||
499 | v9fs_stat2inode_dotl(st, ret); | |
500 | ret->i_ino = v9fs_qid2ino(&st->qid); | |
501 | #ifdef CONFIG_9P_FSCACHE | |
502 | v9fs_vcookie_set_qid(ret, &st->qid); | |
503 | v9fs_cache_inode_get_cookie(ret); | |
504 | #endif | |
85ff872d AK |
505 | err = v9fs_get_acl(ret, fid); |
506 | if (err) { | |
507 | iput(ret); | |
508 | goto error; | |
509 | } | |
f0853122 SK |
510 | kfree(st); |
511 | return ret; | |
512 | error: | |
513 | kfree(st); | |
514 | return ERR_PTR(err); | |
515 | } | |
516 | ||
517 | /** | |
518 | * v9fs_inode_from_fid - Helper routine to populate an inode by | |
519 | * issuing a attribute request | |
520 | * @v9ses: session information | |
521 | * @fid: fid to issue attribute request for | |
522 | * @sb: superblock on which to create inode | |
523 | * | |
524 | */ | |
525 | static inline struct inode * | |
526 | v9fs_inode_from_fid(struct v9fs_session_info *v9ses, struct p9_fid *fid, | |
527 | struct super_block *sb) | |
528 | { | |
529 | if (v9fs_proto_dotl(v9ses)) | |
530 | return v9fs_inode_dotl(v9ses, fid, sb); | |
531 | else | |
532 | return v9fs_inode(v9ses, fid, sb); | |
533 | } | |
534 | ||
2bad8471 EVH |
535 | /** |
536 | * v9fs_remove - helper function to remove files and directories | |
73c592b9 EVH |
537 | * @dir: directory inode that is being deleted |
538 | * @file: dentry that is being deleted | |
539 | * @rmdir: removing a directory | |
2bad8471 EVH |
540 | * |
541 | */ | |
542 | ||
543 | static int v9fs_remove(struct inode *dir, struct dentry *file, int rmdir) | |
544 | { | |
d994f405 | 545 | int retval; |
bd238fb4 | 546 | struct inode *file_inode; |
bd238fb4 | 547 | struct p9_fid *v9fid; |
2bad8471 | 548 | |
bd238fb4 | 549 | P9_DPRINTK(P9_DEBUG_VFS, "inode: %p dentry: %p rmdir: %d\n", dir, file, |
2bad8471 EVH |
550 | rmdir); |
551 | ||
552 | file_inode = file->d_inode; | |
c959df9f | 553 | v9fid = v9fs_fid_clone(file); |
ba17674f | 554 | if (IS_ERR(v9fid)) |
da977b2c | 555 | return PTR_ERR(v9fid); |
2bad8471 | 556 | |
d994f405 AK |
557 | retval = p9_client_remove(v9fid); |
558 | if (!retval) | |
559 | drop_nlink(file_inode); | |
560 | return retval; | |
2bad8471 EVH |
561 | } |
562 | ||
6a3124a3 LI |
563 | static int |
564 | v9fs_open_created(struct inode *inode, struct file *file) | |
565 | { | |
566 | return 0; | |
567 | } | |
568 | ||
bd238fb4 | 569 | |
2bad8471 | 570 | /** |
bd238fb4 | 571 | * v9fs_create - Create a file |
ee443996 EVH |
572 | * @v9ses: session information |
573 | * @dir: directory that dentry is being created in | |
bd238fb4 | 574 | * @dentry: dentry that is being created |
0e15597e | 575 | * @extension: 9p2000.u extension string to support devices, etc. |
bd238fb4 LI |
576 | * @perm: create permissions |
577 | * @mode: open mode | |
2bad8471 EVH |
578 | * |
579 | */ | |
bd238fb4 LI |
580 | static struct p9_fid * |
581 | v9fs_create(struct v9fs_session_info *v9ses, struct inode *dir, | |
582 | struct dentry *dentry, char *extension, u32 perm, u8 mode) | |
2bad8471 | 583 | { |
6a3124a3 | 584 | int err; |
bd238fb4 LI |
585 | char *name; |
586 | struct p9_fid *dfid, *ofid, *fid; | |
6a3124a3 | 587 | struct inode *inode; |
6a3124a3 | 588 | |
51a87c55 EVH |
589 | P9_DPRINTK(P9_DEBUG_VFS, "name %s\n", dentry->d_name.name); |
590 | ||
bd238fb4 LI |
591 | err = 0; |
592 | ofid = NULL; | |
593 | fid = NULL; | |
594 | name = (char *) dentry->d_name.name; | |
6d27e64d | 595 | dfid = v9fs_fid_lookup(dentry->d_parent); |
ba17674f | 596 | if (IS_ERR(dfid)) { |
da977b2c | 597 | err = PTR_ERR(dfid); |
6d27e64d VJ |
598 | P9_DPRINTK(P9_DEBUG_VFS, "fid lookup failed %d\n", err); |
599 | return ERR_PTR(err); | |
da977b2c | 600 | } |
6a3124a3 | 601 | |
bd238fb4 LI |
602 | /* clone a fid to use for creation */ |
603 | ofid = p9_client_walk(dfid, 0, NULL, 1); | |
604 | if (IS_ERR(ofid)) { | |
605 | err = PTR_ERR(ofid); | |
51a87c55 | 606 | P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err); |
6d27e64d | 607 | return ERR_PTR(err); |
bd238fb4 | 608 | } |
6a3124a3 | 609 | |
bd238fb4 | 610 | err = p9_client_fcreate(ofid, name, perm, mode, extension); |
51a87c55 EVH |
611 | if (err < 0) { |
612 | P9_DPRINTK(P9_DEBUG_VFS, "p9_client_fcreate failed %d\n", err); | |
bd238fb4 | 613 | goto error; |
51a87c55 | 614 | } |
6a3124a3 | 615 | |
bd238fb4 | 616 | /* now walk from the parent so we can get unopened fid */ |
6d27e64d | 617 | fid = p9_client_walk(dfid, 1, &name, 1); |
bd238fb4 LI |
618 | if (IS_ERR(fid)) { |
619 | err = PTR_ERR(fid); | |
51a87c55 | 620 | P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err); |
bd238fb4 | 621 | fid = NULL; |
6a3124a3 | 622 | goto error; |
6d27e64d | 623 | } |
6a3124a3 | 624 | |
bd238fb4 LI |
625 | /* instantiate inode and assign the unopened fid to the dentry */ |
626 | inode = v9fs_inode_from_fid(v9ses, fid, dir->i_sb); | |
6a3124a3 LI |
627 | if (IS_ERR(inode)) { |
628 | err = PTR_ERR(inode); | |
51a87c55 | 629 | P9_DPRINTK(P9_DEBUG_VFS, "inode creation failed %d\n", err); |
6a3124a3 LI |
630 | goto error; |
631 | } | |
632 | ||
ba17674f | 633 | if (v9ses->cache) |
e03abc0c EVH |
634 | dentry->d_op = &v9fs_cached_dentry_operations; |
635 | else | |
636 | dentry->d_op = &v9fs_dentry_operations; | |
bd238fb4 | 637 | |
6a3124a3 | 638 | d_instantiate(dentry, inode); |
50fb6d2b AK |
639 | err = v9fs_fid_add(dentry, fid); |
640 | if (err < 0) | |
641 | goto error; | |
642 | ||
bd238fb4 | 643 | return ofid; |
6a3124a3 | 644 | |
bd238fb4 | 645 | error: |
bd238fb4 LI |
646 | if (ofid) |
647 | p9_client_clunk(ofid); | |
648 | ||
649 | if (fid) | |
650 | p9_client_clunk(fid); | |
651 | ||
652 | return ERR_PTR(err); | |
653 | } | |
654 | ||
5643135a VJJ |
655 | /** |
656 | * v9fs_vfs_create_dotl - VFS hook to create files for 9P2000.L protocol. | |
657 | * @dir: directory inode that is being created | |
658 | * @dentry: dentry that is being deleted | |
659 | * @mode: create permissions | |
660 | * @nd: path information | |
661 | * | |
662 | */ | |
663 | ||
664 | static int | |
665 | v9fs_vfs_create_dotl(struct inode *dir, struct dentry *dentry, int mode, | |
666 | struct nameidata *nd) | |
667 | { | |
668 | int err = 0; | |
669 | char *name = NULL; | |
670 | gid_t gid; | |
671 | int flags; | |
672 | struct v9fs_session_info *v9ses; | |
673 | struct p9_fid *fid = NULL; | |
674 | struct p9_fid *dfid, *ofid; | |
675 | struct file *filp; | |
676 | struct p9_qid qid; | |
677 | struct inode *inode; | |
678 | ||
679 | v9ses = v9fs_inode2v9ses(dir); | |
680 | if (nd && nd->flags & LOOKUP_OPEN) | |
681 | flags = nd->intent.open.flags - 1; | |
682 | else | |
683 | flags = O_RDWR; | |
684 | ||
685 | name = (char *) dentry->d_name.name; | |
686 | P9_DPRINTK(P9_DEBUG_VFS, "v9fs_vfs_create_dotl: name:%s flags:0x%x " | |
687 | "mode:0x%x\n", name, flags, mode); | |
688 | ||
689 | dfid = v9fs_fid_lookup(dentry->d_parent); | |
690 | if (IS_ERR(dfid)) { | |
691 | err = PTR_ERR(dfid); | |
692 | P9_DPRINTK(P9_DEBUG_VFS, "fid lookup failed %d\n", err); | |
693 | return err; | |
694 | } | |
695 | ||
696 | /* clone a fid to use for creation */ | |
697 | ofid = p9_client_walk(dfid, 0, NULL, 1); | |
698 | if (IS_ERR(ofid)) { | |
699 | err = PTR_ERR(ofid); | |
700 | P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err); | |
701 | return err; | |
702 | } | |
703 | ||
704 | gid = v9fs_get_fsgid_for_create(dir); | |
705 | err = p9_client_create_dotl(ofid, name, flags, mode, gid, &qid); | |
706 | if (err < 0) { | |
707 | P9_DPRINTK(P9_DEBUG_VFS, | |
708 | "p9_client_open_dotl failed in creat %d\n", | |
709 | err); | |
710 | goto error; | |
711 | } | |
712 | ||
713 | /* No need to populate the inode if we are not opening the file AND | |
714 | * not in cached mode. | |
715 | */ | |
716 | if (!v9ses->cache && !(nd && nd->flags & LOOKUP_OPEN)) { | |
717 | /* Not in cached mode. No need to populate inode with stat */ | |
718 | dentry->d_op = &v9fs_dentry_operations; | |
719 | p9_client_clunk(ofid); | |
720 | d_instantiate(dentry, NULL); | |
721 | return 0; | |
722 | } | |
723 | ||
724 | /* Now walk from the parent so we can get an unopened fid. */ | |
725 | fid = p9_client_walk(dfid, 1, &name, 1); | |
726 | if (IS_ERR(fid)) { | |
727 | err = PTR_ERR(fid); | |
728 | P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err); | |
729 | fid = NULL; | |
730 | goto error; | |
731 | } | |
732 | ||
733 | /* instantiate inode and assign the unopened fid to dentry */ | |
734 | inode = v9fs_inode_from_fid(v9ses, fid, dir->i_sb); | |
735 | if (IS_ERR(inode)) { | |
736 | err = PTR_ERR(inode); | |
737 | P9_DPRINTK(P9_DEBUG_VFS, "inode creation failed %d\n", err); | |
738 | goto error; | |
739 | } | |
3c30750f AK |
740 | if (v9ses->cache) |
741 | dentry->d_op = &v9fs_cached_dentry_operations; | |
742 | else | |
743 | dentry->d_op = &v9fs_dentry_operations; | |
5643135a VJJ |
744 | d_instantiate(dentry, inode); |
745 | err = v9fs_fid_add(dentry, fid); | |
746 | if (err < 0) | |
747 | goto error; | |
748 | ||
749 | /* if we are opening a file, assign the open fid to the file */ | |
750 | if (nd && nd->flags & LOOKUP_OPEN) { | |
751 | filp = lookup_instantiate_filp(nd, dentry, v9fs_open_created); | |
752 | if (IS_ERR(filp)) { | |
753 | p9_client_clunk(ofid); | |
754 | return PTR_ERR(filp); | |
755 | } | |
756 | filp->private_data = ofid; | |
757 | } else | |
758 | p9_client_clunk(ofid); | |
759 | ||
760 | return 0; | |
761 | ||
762 | error: | |
763 | if (ofid) | |
764 | p9_client_clunk(ofid); | |
765 | if (fid) | |
766 | p9_client_clunk(fid); | |
767 | return err; | |
768 | } | |
769 | ||
bd238fb4 LI |
770 | /** |
771 | * v9fs_vfs_create - VFS hook to create files | |
ee443996 | 772 | * @dir: directory inode that is being created |
bd238fb4 LI |
773 | * @dentry: dentry that is being deleted |
774 | * @mode: create permissions | |
775 | * @nd: path information | |
776 | * | |
777 | */ | |
6a3124a3 | 778 | |
bd238fb4 LI |
779 | static int |
780 | v9fs_vfs_create(struct inode *dir, struct dentry *dentry, int mode, | |
781 | struct nameidata *nd) | |
782 | { | |
783 | int err; | |
784 | u32 perm; | |
785 | int flags; | |
786 | struct v9fs_session_info *v9ses; | |
787 | struct p9_fid *fid; | |
788 | struct file *filp; | |
789 | ||
790 | err = 0; | |
791 | fid = NULL; | |
792 | v9ses = v9fs_inode2v9ses(dir); | |
793 | perm = unixmode2p9mode(v9ses, mode); | |
794 | if (nd && nd->flags & LOOKUP_OPEN) | |
795 | flags = nd->intent.open.flags - 1; | |
796 | else | |
797 | flags = O_RDWR; | |
798 | ||
799 | fid = v9fs_create(v9ses, dir, dentry, NULL, perm, | |
dd6102fb SK |
800 | v9fs_uflags2omode(flags, |
801 | v9fs_proto_dotu(v9ses))); | |
bd238fb4 LI |
802 | if (IS_ERR(fid)) { |
803 | err = PTR_ERR(fid); | |
804 | fid = NULL; | |
805 | goto error; | |
806 | } | |
807 | ||
808 | /* if we are opening a file, assign the open fid to the file */ | |
809 | if (nd && nd->flags & LOOKUP_OPEN) { | |
6a3124a3 LI |
810 | filp = lookup_instantiate_filp(nd, dentry, v9fs_open_created); |
811 | if (IS_ERR(filp)) { | |
bd238fb4 LI |
812 | err = PTR_ERR(filp); |
813 | goto error; | |
6a3124a3 LI |
814 | } |
815 | ||
bd238fb4 LI |
816 | filp->private_data = fid; |
817 | } else | |
818 | p9_client_clunk(fid); | |
6a3124a3 LI |
819 | |
820 | return 0; | |
821 | ||
822 | error: | |
bd238fb4 LI |
823 | if (fid) |
824 | p9_client_clunk(fid); | |
6a3124a3 | 825 | |
6a3124a3 | 826 | return err; |
2bad8471 EVH |
827 | } |
828 | ||
829 | /** | |
830 | * v9fs_vfs_mkdir - VFS mkdir hook to create a directory | |
ee443996 | 831 | * @dir: inode that is being unlinked |
2bad8471 EVH |
832 | * @dentry: dentry that is being unlinked |
833 | * @mode: mode for new directory | |
834 | * | |
835 | */ | |
836 | ||
6a3124a3 | 837 | static int v9fs_vfs_mkdir(struct inode *dir, struct dentry *dentry, int mode) |
2bad8471 | 838 | { |
6a3124a3 | 839 | int err; |
bd238fb4 | 840 | u32 perm; |
6a3124a3 | 841 | struct v9fs_session_info *v9ses; |
bd238fb4 | 842 | struct p9_fid *fid; |
6a3124a3 | 843 | |
bd238fb4 LI |
844 | P9_DPRINTK(P9_DEBUG_VFS, "name %s\n", dentry->d_name.name); |
845 | err = 0; | |
6a3124a3 | 846 | v9ses = v9fs_inode2v9ses(dir); |
6a3124a3 | 847 | perm = unixmode2p9mode(v9ses, mode | S_IFDIR); |
bd238fb4 LI |
848 | fid = v9fs_create(v9ses, dir, dentry, NULL, perm, P9_OREAD); |
849 | if (IS_ERR(fid)) { | |
850 | err = PTR_ERR(fid); | |
851 | fid = NULL; | |
6a3124a3 LI |
852 | } |
853 | ||
bd238fb4 LI |
854 | if (fid) |
855 | p9_client_clunk(fid); | |
6a3124a3 | 856 | |
6a3124a3 | 857 | return err; |
2bad8471 EVH |
858 | } |
859 | ||
01a622bd MK |
860 | |
861 | /** | |
862 | * v9fs_vfs_mkdir_dotl - VFS mkdir hook to create a directory | |
863 | * @dir: inode that is being unlinked | |
864 | * @dentry: dentry that is being unlinked | |
865 | * @mode: mode for new directory | |
866 | * | |
867 | */ | |
868 | ||
869 | static int v9fs_vfs_mkdir_dotl(struct inode *dir, struct dentry *dentry, | |
870 | int mode) | |
871 | { | |
872 | int err; | |
873 | struct v9fs_session_info *v9ses; | |
874 | struct p9_fid *fid = NULL, *dfid = NULL; | |
875 | gid_t gid; | |
876 | char *name; | |
877 | struct inode *inode; | |
878 | struct p9_qid qid; | |
879 | struct dentry *dir_dentry; | |
880 | ||
881 | P9_DPRINTK(P9_DEBUG_VFS, "name %s\n", dentry->d_name.name); | |
882 | err = 0; | |
883 | v9ses = v9fs_inode2v9ses(dir); | |
884 | ||
885 | mode |= S_IFDIR; | |
7c7298cf HPB |
886 | if (dir->i_mode & S_ISGID) |
887 | mode |= S_ISGID; | |
01a622bd MK |
888 | dir_dentry = v9fs_dentry_from_dir_inode(dir); |
889 | dfid = v9fs_fid_lookup(dir_dentry); | |
890 | if (IS_ERR(dfid)) { | |
891 | err = PTR_ERR(dfid); | |
892 | P9_DPRINTK(P9_DEBUG_VFS, "fid lookup failed %d\n", err); | |
893 | dfid = NULL; | |
894 | goto error; | |
895 | } | |
896 | ||
897 | gid = v9fs_get_fsgid_for_create(dir); | |
01a622bd MK |
898 | |
899 | name = (char *) dentry->d_name.name; | |
900 | err = p9_client_mkdir_dotl(dfid, name, mode, gid, &qid); | |
901 | if (err < 0) | |
902 | goto error; | |
903 | ||
904 | /* instantiate inode and assign the unopened fid to the dentry */ | |
905 | if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) { | |
906 | fid = p9_client_walk(dfid, 1, &name, 1); | |
907 | if (IS_ERR(fid)) { | |
908 | err = PTR_ERR(fid); | |
909 | P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n", | |
910 | err); | |
911 | fid = NULL; | |
912 | goto error; | |
913 | } | |
914 | ||
915 | inode = v9fs_inode_from_fid(v9ses, fid, dir->i_sb); | |
916 | if (IS_ERR(inode)) { | |
917 | err = PTR_ERR(inode); | |
918 | P9_DPRINTK(P9_DEBUG_VFS, "inode creation failed %d\n", | |
919 | err); | |
920 | goto error; | |
921 | } | |
922 | dentry->d_op = &v9fs_cached_dentry_operations; | |
923 | d_instantiate(dentry, inode); | |
924 | err = v9fs_fid_add(dentry, fid); | |
925 | if (err < 0) | |
926 | goto error; | |
927 | fid = NULL; | |
928 | } | |
929 | error: | |
930 | if (fid) | |
931 | p9_client_clunk(fid); | |
932 | return err; | |
933 | } | |
934 | ||
2bad8471 EVH |
935 | /** |
936 | * v9fs_vfs_lookup - VFS lookup hook to "walk" to a new inode | |
937 | * @dir: inode that is being walked from | |
938 | * @dentry: dentry that is being walked to? | |
939 | * @nameidata: path data | |
940 | * | |
941 | */ | |
942 | ||
943 | static struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry, | |
944 | struct nameidata *nameidata) | |
945 | { | |
946 | struct super_block *sb; | |
947 | struct v9fs_session_info *v9ses; | |
bd238fb4 | 948 | struct p9_fid *dfid, *fid; |
2bad8471 | 949 | struct inode *inode; |
bd238fb4 | 950 | char *name; |
2bad8471 EVH |
951 | int result = 0; |
952 | ||
bd238fb4 | 953 | P9_DPRINTK(P9_DEBUG_VFS, "dir: %p dentry: (%s) %p nameidata: %p\n", |
731805b4 | 954 | dir, dentry->d_name.name, dentry, nameidata); |
2bad8471 | 955 | |
11e9b49b SK |
956 | if (dentry->d_name.len > NAME_MAX) |
957 | return ERR_PTR(-ENAMETOOLONG); | |
958 | ||
2bad8471 EVH |
959 | sb = dir->i_sb; |
960 | v9ses = v9fs_inode2v9ses(dir); | |
a534c8d1 | 961 | /* We can walk d_parent because we hold the dir->i_mutex */ |
bd238fb4 LI |
962 | dfid = v9fs_fid_lookup(dentry->d_parent); |
963 | if (IS_ERR(dfid)) | |
e231c2ee | 964 | return ERR_CAST(dfid); |
bd238fb4 LI |
965 | |
966 | name = (char *) dentry->d_name.name; | |
967 | fid = p9_client_walk(dfid, 1, &name, 1); | |
968 | if (IS_ERR(fid)) { | |
969 | result = PTR_ERR(fid); | |
2bad8471 | 970 | if (result == -ENOENT) { |
85e0df24 AK |
971 | inode = NULL; |
972 | goto inst_out; | |
2bad8471 | 973 | } |
2bad8471 | 974 | |
bd238fb4 | 975 | return ERR_PTR(result); |
2bad8471 EVH |
976 | } |
977 | ||
bd238fb4 LI |
978 | inode = v9fs_inode_from_fid(v9ses, fid, dir->i_sb); |
979 | if (IS_ERR(inode)) { | |
980 | result = PTR_ERR(inode); | |
981 | inode = NULL; | |
982 | goto error; | |
2bad8471 EVH |
983 | } |
984 | ||
bd238fb4 | 985 | result = v9fs_fid_add(dentry, fid); |
6a3124a3 | 986 | if (result < 0) |
bd238fb4 | 987 | goto error; |
6a3124a3 | 988 | |
85e0df24 AK |
989 | inst_out: |
990 | if (v9ses->cache) | |
e03abc0c EVH |
991 | dentry->d_op = &v9fs_cached_dentry_operations; |
992 | else | |
993 | dentry->d_op = &v9fs_dentry_operations; | |
2bad8471 EVH |
994 | |
995 | d_add(dentry, inode); | |
2bad8471 EVH |
996 | return NULL; |
997 | ||
bd238fb4 | 998 | error: |
62aa528e | 999 | p9_client_clunk(fid); |
da977b2c | 1000 | |
2bad8471 EVH |
1001 | return ERR_PTR(result); |
1002 | } | |
1003 | ||
1004 | /** | |
1005 | * v9fs_vfs_unlink - VFS unlink hook to delete an inode | |
1006 | * @i: inode that is being unlinked | |
73c592b9 | 1007 | * @d: dentry that is being unlinked |
2bad8471 EVH |
1008 | * |
1009 | */ | |
1010 | ||
1011 | static int v9fs_vfs_unlink(struct inode *i, struct dentry *d) | |
1012 | { | |
1013 | return v9fs_remove(i, d, 0); | |
1014 | } | |
1015 | ||
1016 | /** | |
1017 | * v9fs_vfs_rmdir - VFS unlink hook to delete a directory | |
1018 | * @i: inode that is being unlinked | |
73c592b9 | 1019 | * @d: dentry that is being unlinked |
2bad8471 EVH |
1020 | * |
1021 | */ | |
1022 | ||
1023 | static int v9fs_vfs_rmdir(struct inode *i, struct dentry *d) | |
1024 | { | |
1025 | return v9fs_remove(i, d, 1); | |
1026 | } | |
1027 | ||
1028 | /** | |
1029 | * v9fs_vfs_rename - VFS hook to rename an inode | |
1030 | * @old_dir: old dir inode | |
1031 | * @old_dentry: old dentry | |
1032 | * @new_dir: new dir inode | |
1033 | * @new_dentry: new dentry | |
1034 | * | |
1035 | */ | |
1036 | ||
1037 | static int | |
1038 | v9fs_vfs_rename(struct inode *old_dir, struct dentry *old_dentry, | |
1039 | struct inode *new_dir, struct dentry *new_dentry) | |
1040 | { | |
bd238fb4 LI |
1041 | struct inode *old_inode; |
1042 | struct v9fs_session_info *v9ses; | |
1043 | struct p9_fid *oldfid; | |
1044 | struct p9_fid *olddirfid; | |
1045 | struct p9_fid *newdirfid; | |
1046 | struct p9_wstat wstat; | |
1047 | int retval; | |
2bad8471 | 1048 | |
bd238fb4 LI |
1049 | P9_DPRINTK(P9_DEBUG_VFS, "\n"); |
1050 | retval = 0; | |
1051 | old_inode = old_dentry->d_inode; | |
1052 | v9ses = v9fs_inode2v9ses(old_inode); | |
1053 | oldfid = v9fs_fid_lookup(old_dentry); | |
ba17674f | 1054 | if (IS_ERR(oldfid)) |
da977b2c EVH |
1055 | return PTR_ERR(oldfid); |
1056 | ||
1057 | olddirfid = v9fs_fid_clone(old_dentry->d_parent); | |
ba17674f | 1058 | if (IS_ERR(olddirfid)) { |
da977b2c | 1059 | retval = PTR_ERR(olddirfid); |
bd238fb4 | 1060 | goto done; |
da977b2c EVH |
1061 | } |
1062 | ||
1063 | newdirfid = v9fs_fid_clone(new_dentry->d_parent); | |
ba17674f | 1064 | if (IS_ERR(newdirfid)) { |
da977b2c | 1065 | retval = PTR_ERR(newdirfid); |
bd238fb4 | 1066 | goto clunk_olddir; |
2bad8471 EVH |
1067 | } |
1068 | ||
a534c8d1 | 1069 | down_write(&v9ses->rename_sem); |
4681dbda SK |
1070 | if (v9fs_proto_dotl(v9ses)) { |
1071 | retval = p9_client_rename(oldfid, newdirfid, | |
1072 | (char *) new_dentry->d_name.name); | |
1073 | if (retval != -ENOSYS) | |
1074 | goto clunk_newdir; | |
1075 | } | |
a534c8d1 AK |
1076 | if (old_dentry->d_parent != new_dentry->d_parent) { |
1077 | /* | |
1078 | * 9P .u can only handle file rename in the same directory | |
1079 | */ | |
4681dbda | 1080 | |
bd238fb4 LI |
1081 | P9_DPRINTK(P9_DEBUG_ERROR, |
1082 | "old dir and new dir are different\n"); | |
621997cd | 1083 | retval = -EXDEV; |
bd238fb4 | 1084 | goto clunk_newdir; |
2bad8471 | 1085 | } |
531b1094 | 1086 | v9fs_blank_wstat(&wstat); |
ba17674f | 1087 | wstat.muid = v9ses->uname; |
531b1094 | 1088 | wstat.name = (char *) new_dentry->d_name.name; |
bd238fb4 | 1089 | retval = p9_client_wstat(oldfid, &wstat); |
2bad8471 | 1090 | |
bd238fb4 | 1091 | clunk_newdir: |
a534c8d1 AK |
1092 | if (!retval) |
1093 | /* successful rename */ | |
1094 | d_move(old_dentry, new_dentry); | |
1095 | up_write(&v9ses->rename_sem); | |
22150c4f | 1096 | p9_client_clunk(newdirfid); |
2bad8471 | 1097 | |
bd238fb4 | 1098 | clunk_olddir: |
22150c4f | 1099 | p9_client_clunk(olddirfid); |
da977b2c | 1100 | |
bd238fb4 | 1101 | done: |
2bad8471 EVH |
1102 | return retval; |
1103 | } | |
1104 | ||
1105 | /** | |
943ffb58 | 1106 | * v9fs_vfs_getattr - retrieve file metadata |
ee443996 EVH |
1107 | * @mnt: mount information |
1108 | * @dentry: file to get attributes on | |
1109 | * @stat: metadata structure to populate | |
2bad8471 EVH |
1110 | * |
1111 | */ | |
1112 | ||
1113 | static int | |
1114 | v9fs_vfs_getattr(struct vfsmount *mnt, struct dentry *dentry, | |
1115 | struct kstat *stat) | |
1116 | { | |
bd238fb4 LI |
1117 | int err; |
1118 | struct v9fs_session_info *v9ses; | |
1119 | struct p9_fid *fid; | |
51a87c55 | 1120 | struct p9_wstat *st; |
bd238fb4 LI |
1121 | |
1122 | P9_DPRINTK(P9_DEBUG_VFS, "dentry: %p\n", dentry); | |
1123 | err = -EPERM; | |
1124 | v9ses = v9fs_inode2v9ses(dentry->d_inode); | |
60e78d2c | 1125 | if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) |
9523a841 EVH |
1126 | return simple_getattr(mnt, dentry, stat); |
1127 | ||
bd238fb4 LI |
1128 | fid = v9fs_fid_lookup(dentry); |
1129 | if (IS_ERR(fid)) | |
da977b2c | 1130 | return PTR_ERR(fid); |
2bad8471 | 1131 | |
bd238fb4 LI |
1132 | st = p9_client_stat(fid); |
1133 | if (IS_ERR(st)) | |
1134 | return PTR_ERR(st); | |
2bad8471 | 1135 | |
bd238fb4 | 1136 | v9fs_stat2inode(st, dentry->d_inode, dentry->d_inode->i_sb); |
2bad8471 | 1137 | generic_fillattr(dentry->d_inode, stat); |
2bad8471 | 1138 | |
62b2be59 | 1139 | p9stat_free(st); |
bd238fb4 LI |
1140 | kfree(st); |
1141 | return 0; | |
2bad8471 EVH |
1142 | } |
1143 | ||
f0853122 SK |
1144 | static int |
1145 | v9fs_vfs_getattr_dotl(struct vfsmount *mnt, struct dentry *dentry, | |
1146 | struct kstat *stat) | |
1147 | { | |
1148 | int err; | |
1149 | struct v9fs_session_info *v9ses; | |
1150 | struct p9_fid *fid; | |
1151 | struct p9_stat_dotl *st; | |
1152 | ||
1153 | P9_DPRINTK(P9_DEBUG_VFS, "dentry: %p\n", dentry); | |
1154 | err = -EPERM; | |
1155 | v9ses = v9fs_inode2v9ses(dentry->d_inode); | |
1156 | if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) | |
1157 | return simple_getattr(mnt, dentry, stat); | |
1158 | ||
1159 | fid = v9fs_fid_lookup(dentry); | |
1160 | if (IS_ERR(fid)) | |
1161 | return PTR_ERR(fid); | |
1162 | ||
1163 | /* Ask for all the fields in stat structure. Server will return | |
1164 | * whatever it supports | |
1165 | */ | |
1166 | ||
1167 | st = p9_client_getattr_dotl(fid, P9_STATS_ALL); | |
1168 | if (IS_ERR(st)) | |
1169 | return PTR_ERR(st); | |
1170 | ||
1171 | v9fs_stat2inode_dotl(st, dentry->d_inode); | |
1172 | generic_fillattr(dentry->d_inode, stat); | |
1173 | /* Change block size to what the server returned */ | |
1174 | stat->blksize = st->st_blksize; | |
1175 | ||
1176 | kfree(st); | |
1177 | return 0; | |
1178 | } | |
1179 | ||
2bad8471 EVH |
1180 | /** |
1181 | * v9fs_vfs_setattr - set file metadata | |
1182 | * @dentry: file whose metadata to set | |
1183 | * @iattr: metadata assignment structure | |
1184 | * | |
1185 | */ | |
1186 | ||
1187 | static int v9fs_vfs_setattr(struct dentry *dentry, struct iattr *iattr) | |
1188 | { | |
bd238fb4 LI |
1189 | int retval; |
1190 | struct v9fs_session_info *v9ses; | |
1191 | struct p9_fid *fid; | |
1192 | struct p9_wstat wstat; | |
2bad8471 | 1193 | |
bd238fb4 LI |
1194 | P9_DPRINTK(P9_DEBUG_VFS, "\n"); |
1195 | retval = -EPERM; | |
1196 | v9ses = v9fs_inode2v9ses(dentry->d_inode); | |
1197 | fid = v9fs_fid_lookup(dentry); | |
da977b2c EVH |
1198 | if(IS_ERR(fid)) |
1199 | return PTR_ERR(fid); | |
2bad8471 | 1200 | |
531b1094 | 1201 | v9fs_blank_wstat(&wstat); |
2bad8471 | 1202 | if (iattr->ia_valid & ATTR_MODE) |
531b1094 | 1203 | wstat.mode = unixmode2p9mode(v9ses, iattr->ia_mode); |
2bad8471 EVH |
1204 | |
1205 | if (iattr->ia_valid & ATTR_MTIME) | |
531b1094 | 1206 | wstat.mtime = iattr->ia_mtime.tv_sec; |
2bad8471 EVH |
1207 | |
1208 | if (iattr->ia_valid & ATTR_ATIME) | |
531b1094 | 1209 | wstat.atime = iattr->ia_atime.tv_sec; |
2bad8471 EVH |
1210 | |
1211 | if (iattr->ia_valid & ATTR_SIZE) | |
531b1094 | 1212 | wstat.length = iattr->ia_size; |
2bad8471 | 1213 | |
dd6102fb | 1214 | if (v9fs_proto_dotu(v9ses)) { |
531b1094 LI |
1215 | if (iattr->ia_valid & ATTR_UID) |
1216 | wstat.n_uid = iattr->ia_uid; | |
2bad8471 | 1217 | |
531b1094 LI |
1218 | if (iattr->ia_valid & ATTR_GID) |
1219 | wstat.n_gid = iattr->ia_gid; | |
2bad8471 EVH |
1220 | } |
1221 | ||
bd238fb4 | 1222 | retval = p9_client_wstat(fid, &wstat); |
1025774c CH |
1223 | if (retval < 0) |
1224 | return retval; | |
2bad8471 | 1225 | |
1025774c CH |
1226 | if ((iattr->ia_valid & ATTR_SIZE) && |
1227 | iattr->ia_size != i_size_read(dentry->d_inode)) { | |
1228 | retval = vmtruncate(dentry->d_inode, iattr->ia_size); | |
1229 | if (retval) | |
1230 | return retval; | |
1231 | } | |
2bad8471 | 1232 | |
1025774c CH |
1233 | setattr_copy(dentry->d_inode, iattr); |
1234 | mark_inode_dirty(dentry->d_inode); | |
1235 | return 0; | |
2bad8471 EVH |
1236 | } |
1237 | ||
87d7845a SK |
1238 | /** |
1239 | * v9fs_vfs_setattr_dotl - set file metadata | |
1240 | * @dentry: file whose metadata to set | |
1241 | * @iattr: metadata assignment structure | |
1242 | * | |
1243 | */ | |
1244 | ||
22d8dcdf | 1245 | int v9fs_vfs_setattr_dotl(struct dentry *dentry, struct iattr *iattr) |
87d7845a SK |
1246 | { |
1247 | int retval; | |
1248 | struct v9fs_session_info *v9ses; | |
1249 | struct p9_fid *fid; | |
1250 | struct p9_iattr_dotl p9attr; | |
1251 | ||
1252 | P9_DPRINTK(P9_DEBUG_VFS, "\n"); | |
1253 | ||
1254 | retval = inode_change_ok(dentry->d_inode, iattr); | |
1255 | if (retval) | |
1256 | return retval; | |
1257 | ||
1258 | p9attr.valid = iattr->ia_valid; | |
1259 | p9attr.mode = iattr->ia_mode; | |
1260 | p9attr.uid = iattr->ia_uid; | |
1261 | p9attr.gid = iattr->ia_gid; | |
1262 | p9attr.size = iattr->ia_size; | |
1263 | p9attr.atime_sec = iattr->ia_atime.tv_sec; | |
1264 | p9attr.atime_nsec = iattr->ia_atime.tv_nsec; | |
1265 | p9attr.mtime_sec = iattr->ia_mtime.tv_sec; | |
1266 | p9attr.mtime_nsec = iattr->ia_mtime.tv_nsec; | |
1267 | ||
1268 | retval = -EPERM; | |
1269 | v9ses = v9fs_inode2v9ses(dentry->d_inode); | |
1270 | fid = v9fs_fid_lookup(dentry); | |
1271 | if (IS_ERR(fid)) | |
1272 | return PTR_ERR(fid); | |
1273 | ||
1274 | retval = p9_client_setattr(fid, &p9attr); | |
8cef9c67 SR |
1275 | if (retval < 0) |
1276 | return retval; | |
87d7845a | 1277 | |
8cef9c67 SR |
1278 | if ((iattr->ia_valid & ATTR_SIZE) && |
1279 | iattr->ia_size != i_size_read(dentry->d_inode)) { | |
1280 | retval = vmtruncate(dentry->d_inode, iattr->ia_size); | |
1281 | if (retval) | |
1282 | return retval; | |
1283 | } | |
1284 | ||
1285 | setattr_copy(dentry->d_inode, iattr); | |
1286 | mark_inode_dirty(dentry->d_inode); | |
6e8dc555 AK |
1287 | if (iattr->ia_valid & ATTR_MODE) { |
1288 | /* We also want to update ACL when we update mode bits */ | |
1289 | retval = v9fs_acl_chmod(dentry); | |
1290 | if (retval < 0) | |
1291 | return retval; | |
1292 | } | |
8cef9c67 | 1293 | return 0; |
87d7845a SK |
1294 | } |
1295 | ||
2bad8471 | 1296 | /** |
531b1094 LI |
1297 | * v9fs_stat2inode - populate an inode structure with mistat info |
1298 | * @stat: Plan 9 metadata (mistat) structure | |
2bad8471 EVH |
1299 | * @inode: inode to populate |
1300 | * @sb: superblock of filesystem | |
1301 | * | |
1302 | */ | |
1303 | ||
1304 | void | |
51a87c55 | 1305 | v9fs_stat2inode(struct p9_wstat *stat, struct inode *inode, |
531b1094 | 1306 | struct super_block *sb) |
2bad8471 | 1307 | { |
531b1094 | 1308 | char ext[32]; |
5717144a AK |
1309 | char tag_name[14]; |
1310 | unsigned int i_nlink; | |
2bad8471 EVH |
1311 | struct v9fs_session_info *v9ses = sb->s_fs_info; |
1312 | ||
1313 | inode->i_nlink = 1; | |
1314 | ||
531b1094 LI |
1315 | inode->i_atime.tv_sec = stat->atime; |
1316 | inode->i_mtime.tv_sec = stat->mtime; | |
1317 | inode->i_ctime.tv_sec = stat->mtime; | |
2bad8471 | 1318 | |
bd32b82d LI |
1319 | inode->i_uid = v9ses->dfltuid; |
1320 | inode->i_gid = v9ses->dfltgid; | |
2bad8471 | 1321 | |
dd6102fb | 1322 | if (v9fs_proto_dotu(v9ses)) { |
531b1094 LI |
1323 | inode->i_uid = stat->n_uid; |
1324 | inode->i_gid = stat->n_gid; | |
2bad8471 | 1325 | } |
5717144a AK |
1326 | if ((S_ISREG(inode->i_mode)) || (S_ISDIR(inode->i_mode))) { |
1327 | if (v9fs_proto_dotu(v9ses) && (stat->extension[0] != '\0')) { | |
1328 | /* | |
1329 | * Hadlink support got added later to | |
1330 | * to the .u extension. So there can be | |
1331 | * server out there that doesn't support | |
1332 | * this even with .u extension. So check | |
1333 | * for non NULL stat->extension | |
1334 | */ | |
1335 | strncpy(ext, stat->extension, sizeof(ext)); | |
1336 | /* HARDLINKCOUNT %u */ | |
1337 | sscanf(ext, "%13s %u", tag_name, &i_nlink); | |
1338 | if (!strncmp(tag_name, "HARDLINKCOUNT", 13)) | |
1339 | inode->i_nlink = i_nlink; | |
1340 | } | |
1341 | } | |
531b1094 | 1342 | inode->i_mode = p9mode2unixmode(v9ses, stat->mode); |
2bad8471 EVH |
1343 | if ((S_ISBLK(inode->i_mode)) || (S_ISCHR(inode->i_mode))) { |
1344 | char type = 0; | |
1345 | int major = -1; | |
1346 | int minor = -1; | |
531b1094 | 1347 | |
51a87c55 | 1348 | strncpy(ext, stat->extension, sizeof(ext)); |
531b1094 | 1349 | sscanf(ext, "%c %u %u", &type, &major, &minor); |
2bad8471 EVH |
1350 | switch (type) { |
1351 | case 'c': | |
1352 | inode->i_mode &= ~S_IFBLK; | |
1353 | inode->i_mode |= S_IFCHR; | |
1354 | break; | |
1355 | case 'b': | |
1356 | break; | |
1357 | default: | |
bd238fb4 | 1358 | P9_DPRINTK(P9_DEBUG_ERROR, |
51a87c55 EVH |
1359 | "Unknown special type %c %s\n", type, |
1360 | stat->extension); | |
2bad8471 EVH |
1361 | }; |
1362 | inode->i_rdev = MKDEV(major, minor); | |
57c7b4e6 | 1363 | init_special_inode(inode, inode->i_mode, inode->i_rdev); |
2bad8471 EVH |
1364 | } else |
1365 | inode->i_rdev = 0; | |
1366 | ||
7549ae3e | 1367 | i_size_write(inode, stat->length); |
2bad8471 | 1368 | |
bd238fb4 | 1369 | /* not real number of blocks, but 512 byte ones ... */ |
7549ae3e | 1370 | inode->i_blocks = (i_size_read(inode) + 512 - 1) >> 9; |
2bad8471 EVH |
1371 | } |
1372 | ||
f0853122 SK |
1373 | /** |
1374 | * v9fs_stat2inode_dotl - populate an inode structure with stat info | |
1375 | * @stat: stat structure | |
1376 | * @inode: inode to populate | |
1377 | * @sb: superblock of filesystem | |
1378 | * | |
1379 | */ | |
1380 | ||
1381 | void | |
1382 | v9fs_stat2inode_dotl(struct p9_stat_dotl *stat, struct inode *inode) | |
1383 | { | |
1384 | ||
1385 | if ((stat->st_result_mask & P9_STATS_BASIC) == P9_STATS_BASIC) { | |
1386 | inode->i_atime.tv_sec = stat->st_atime_sec; | |
1387 | inode->i_atime.tv_nsec = stat->st_atime_nsec; | |
1388 | inode->i_mtime.tv_sec = stat->st_mtime_sec; | |
1389 | inode->i_mtime.tv_nsec = stat->st_mtime_nsec; | |
1390 | inode->i_ctime.tv_sec = stat->st_ctime_sec; | |
1391 | inode->i_ctime.tv_nsec = stat->st_ctime_nsec; | |
1392 | inode->i_uid = stat->st_uid; | |
1393 | inode->i_gid = stat->st_gid; | |
1394 | inode->i_nlink = stat->st_nlink; | |
1395 | inode->i_mode = stat->st_mode; | |
1396 | inode->i_rdev = new_decode_dev(stat->st_rdev); | |
1397 | ||
1398 | if ((S_ISBLK(inode->i_mode)) || (S_ISCHR(inode->i_mode))) | |
1399 | init_special_inode(inode, inode->i_mode, inode->i_rdev); | |
1400 | ||
1401 | i_size_write(inode, stat->st_size); | |
1402 | inode->i_blocks = stat->st_blocks; | |
1403 | } else { | |
1404 | if (stat->st_result_mask & P9_STATS_ATIME) { | |
1405 | inode->i_atime.tv_sec = stat->st_atime_sec; | |
1406 | inode->i_atime.tv_nsec = stat->st_atime_nsec; | |
1407 | } | |
1408 | if (stat->st_result_mask & P9_STATS_MTIME) { | |
1409 | inode->i_mtime.tv_sec = stat->st_mtime_sec; | |
1410 | inode->i_mtime.tv_nsec = stat->st_mtime_nsec; | |
1411 | } | |
1412 | if (stat->st_result_mask & P9_STATS_CTIME) { | |
1413 | inode->i_ctime.tv_sec = stat->st_ctime_sec; | |
1414 | inode->i_ctime.tv_nsec = stat->st_ctime_nsec; | |
1415 | } | |
1416 | if (stat->st_result_mask & P9_STATS_UID) | |
1417 | inode->i_uid = stat->st_uid; | |
1418 | if (stat->st_result_mask & P9_STATS_GID) | |
1419 | inode->i_gid = stat->st_gid; | |
1420 | if (stat->st_result_mask & P9_STATS_NLINK) | |
1421 | inode->i_nlink = stat->st_nlink; | |
1422 | if (stat->st_result_mask & P9_STATS_MODE) { | |
1423 | inode->i_mode = stat->st_mode; | |
1424 | if ((S_ISBLK(inode->i_mode)) || | |
1425 | (S_ISCHR(inode->i_mode))) | |
1426 | init_special_inode(inode, inode->i_mode, | |
1427 | inode->i_rdev); | |
1428 | } | |
1429 | if (stat->st_result_mask & P9_STATS_RDEV) | |
1430 | inode->i_rdev = new_decode_dev(stat->st_rdev); | |
1431 | if (stat->st_result_mask & P9_STATS_SIZE) | |
1432 | i_size_write(inode, stat->st_size); | |
1433 | if (stat->st_result_mask & P9_STATS_BLOCKS) | |
1434 | inode->i_blocks = stat->st_blocks; | |
1435 | } | |
1436 | if (stat->st_result_mask & P9_STATS_GEN) | |
1437 | inode->i_generation = stat->st_gen; | |
1438 | ||
1439 | /* Currently we don't support P9_STATS_BTIME and P9_STATS_DATA_VERSION | |
1440 | * because the inode structure does not have fields for them. | |
1441 | */ | |
1442 | } | |
1443 | ||
2bad8471 EVH |
1444 | /** |
1445 | * v9fs_qid2ino - convert qid into inode number | |
1446 | * @qid: qid to hash | |
1447 | * | |
1448 | * BUG: potential for inode number collisions? | |
1449 | */ | |
1450 | ||
bd238fb4 | 1451 | ino_t v9fs_qid2ino(struct p9_qid *qid) |
2bad8471 EVH |
1452 | { |
1453 | u64 path = qid->path + 2; | |
1454 | ino_t i = 0; | |
1455 | ||
1456 | if (sizeof(ino_t) == sizeof(path)) | |
1457 | memcpy(&i, &path, sizeof(ino_t)); | |
1458 | else | |
1459 | i = (ino_t) (path ^ (path >> 32)); | |
1460 | ||
1461 | return i; | |
1462 | } | |
1463 | ||
2bad8471 EVH |
1464 | /** |
1465 | * v9fs_readlink - read a symlink's location (internal version) | |
1466 | * @dentry: dentry for symlink | |
73c592b9 | 1467 | * @buffer: buffer to load symlink location into |
2bad8471 EVH |
1468 | * @buflen: length of buffer |
1469 | * | |
1470 | */ | |
1471 | ||
1472 | static int v9fs_readlink(struct dentry *dentry, char *buffer, int buflen) | |
1473 | { | |
bd238fb4 | 1474 | int retval; |
2bad8471 | 1475 | |
bd238fb4 LI |
1476 | struct v9fs_session_info *v9ses; |
1477 | struct p9_fid *fid; | |
51a87c55 | 1478 | struct p9_wstat *st; |
2bad8471 | 1479 | |
bd238fb4 LI |
1480 | P9_DPRINTK(P9_DEBUG_VFS, " %s\n", dentry->d_name.name); |
1481 | retval = -EPERM; | |
1482 | v9ses = v9fs_inode2v9ses(dentry->d_inode); | |
1483 | fid = v9fs_fid_lookup(dentry); | |
ba17674f | 1484 | if (IS_ERR(fid)) |
da977b2c | 1485 | return PTR_ERR(fid); |
2bad8471 | 1486 | |
50cc42ff | 1487 | if (!v9fs_proto_dotu(v9ses) && !v9fs_proto_dotl(v9ses)) |
bd238fb4 | 1488 | return -EBADF; |
2bad8471 | 1489 | |
bd238fb4 LI |
1490 | st = p9_client_stat(fid); |
1491 | if (IS_ERR(st)) | |
1492 | return PTR_ERR(st); | |
2bad8471 | 1493 | |
bd238fb4 | 1494 | if (!(st->mode & P9_DMSYMLINK)) { |
2bad8471 | 1495 | retval = -EINVAL; |
bd238fb4 | 1496 | goto done; |
2bad8471 EVH |
1497 | } |
1498 | ||
1499 | /* copy extension buffer into buffer */ | |
51a87c55 | 1500 | strncpy(buffer, st->extension, buflen); |
2bad8471 | 1501 | |
bd238fb4 | 1502 | P9_DPRINTK(P9_DEBUG_VFS, |
51a87c55 | 1503 | "%s -> %s (%s)\n", dentry->d_name.name, st->extension, buffer); |
2bad8471 | 1504 | |
2511cd0b | 1505 | retval = strnlen(buffer, buflen); |
bd238fb4 | 1506 | done: |
62b2be59 | 1507 | p9stat_free(st); |
bd238fb4 | 1508 | kfree(st); |
2bad8471 EVH |
1509 | return retval; |
1510 | } | |
1511 | ||
2bad8471 EVH |
1512 | /** |
1513 | * v9fs_vfs_follow_link - follow a symlink path | |
1514 | * @dentry: dentry for symlink | |
1515 | * @nd: nameidata | |
1516 | * | |
1517 | */ | |
1518 | ||
1519 | static void *v9fs_vfs_follow_link(struct dentry *dentry, struct nameidata *nd) | |
1520 | { | |
1521 | int len = 0; | |
1522 | char *link = __getname(); | |
1523 | ||
bd238fb4 | 1524 | P9_DPRINTK(P9_DEBUG_VFS, "%s n", dentry->d_name.name); |
2bad8471 EVH |
1525 | |
1526 | if (!link) | |
1527 | link = ERR_PTR(-ENOMEM); | |
1528 | else { | |
16cce6d2 | 1529 | len = v9fs_readlink(dentry, link, PATH_MAX); |
2bad8471 EVH |
1530 | |
1531 | if (len < 0) { | |
ce44eeb6 | 1532 | __putname(link); |
2bad8471 EVH |
1533 | link = ERR_PTR(len); |
1534 | } else | |
2511cd0b | 1535 | link[min(len, PATH_MAX-1)] = 0; |
2bad8471 EVH |
1536 | } |
1537 | nd_set_link(nd, link); | |
1538 | ||
1539 | return NULL; | |
1540 | } | |
1541 | ||
1542 | /** | |
1543 | * v9fs_vfs_put_link - release a symlink path | |
1544 | * @dentry: dentry for symlink | |
1545 | * @nd: nameidata | |
ee443996 | 1546 | * @p: unused |
2bad8471 EVH |
1547 | * |
1548 | */ | |
1549 | ||
ee443996 EVH |
1550 | static void |
1551 | v9fs_vfs_put_link(struct dentry *dentry, struct nameidata *nd, void *p) | |
2bad8471 EVH |
1552 | { |
1553 | char *s = nd_get_link(nd); | |
1554 | ||
6ff23207 DG |
1555 | P9_DPRINTK(P9_DEBUG_VFS, " %s %s\n", dentry->d_name.name, |
1556 | IS_ERR(s) ? "<error>" : s); | |
2bad8471 | 1557 | if (!IS_ERR(s)) |
ce44eeb6 | 1558 | __putname(s); |
2bad8471 EVH |
1559 | } |
1560 | ||
ee443996 EVH |
1561 | /** |
1562 | * v9fs_vfs_mkspecial - create a special file | |
1563 | * @dir: inode to create special file in | |
1564 | * @dentry: dentry to create | |
1565 | * @mode: mode to create special file | |
1566 | * @extension: 9p2000.u format extension string representing special file | |
1567 | * | |
1568 | */ | |
1569 | ||
531b1094 LI |
1570 | static int v9fs_vfs_mkspecial(struct inode *dir, struct dentry *dentry, |
1571 | int mode, const char *extension) | |
2bad8471 | 1572 | { |
bd238fb4 | 1573 | u32 perm; |
531b1094 | 1574 | struct v9fs_session_info *v9ses; |
bd238fb4 | 1575 | struct p9_fid *fid; |
2bad8471 | 1576 | |
6a3124a3 | 1577 | v9ses = v9fs_inode2v9ses(dir); |
dd6102fb | 1578 | if (!v9fs_proto_dotu(v9ses)) { |
bd238fb4 | 1579 | P9_DPRINTK(P9_DEBUG_ERROR, "not extended\n"); |
6a3124a3 | 1580 | return -EPERM; |
2bad8471 EVH |
1581 | } |
1582 | ||
da977b2c | 1583 | perm = unixmode2p9mode(v9ses, mode); |
bd238fb4 LI |
1584 | fid = v9fs_create(v9ses, dir, dentry, (char *) extension, perm, |
1585 | P9_OREAD); | |
1586 | if (IS_ERR(fid)) | |
1587 | return PTR_ERR(fid); | |
da977b2c | 1588 | |
bd238fb4 | 1589 | p9_client_clunk(fid); |
6a3124a3 | 1590 | return 0; |
531b1094 LI |
1591 | } |
1592 | ||
50cc42ff VJJ |
1593 | /** |
1594 | * v9fs_vfs_symlink_dotl - helper function to create symlinks | |
1595 | * @dir: directory inode containing symlink | |
1596 | * @dentry: dentry for symlink | |
1597 | * @symname: symlink data | |
1598 | * | |
1599 | * See Also: 9P2000.L RFC for more information | |
1600 | * | |
1601 | */ | |
1602 | ||
1603 | static int | |
1604 | v9fs_vfs_symlink_dotl(struct inode *dir, struct dentry *dentry, | |
1605 | const char *symname) | |
1606 | { | |
1607 | struct v9fs_session_info *v9ses; | |
1608 | struct p9_fid *dfid; | |
1609 | struct p9_fid *fid = NULL; | |
1610 | struct inode *inode; | |
1611 | struct p9_qid qid; | |
1612 | char *name; | |
1613 | int err; | |
1614 | gid_t gid; | |
1615 | ||
1616 | name = (char *) dentry->d_name.name; | |
1617 | P9_DPRINTK(P9_DEBUG_VFS, "v9fs_vfs_symlink_dotl : %lu,%s,%s\n", | |
1618 | dir->i_ino, name, symname); | |
1619 | v9ses = v9fs_inode2v9ses(dir); | |
1620 | ||
1621 | dfid = v9fs_fid_lookup(dentry->d_parent); | |
1622 | if (IS_ERR(dfid)) { | |
1623 | err = PTR_ERR(dfid); | |
1624 | P9_DPRINTK(P9_DEBUG_VFS, "fid lookup failed %d\n", err); | |
1625 | return err; | |
1626 | } | |
1627 | ||
1628 | gid = v9fs_get_fsgid_for_create(dir); | |
1629 | ||
50cc42ff VJJ |
1630 | /* Server doesn't alter fid on TSYMLINK. Hence no need to clone it. */ |
1631 | err = p9_client_symlink(dfid, name, (char *)symname, gid, &qid); | |
1632 | ||
1633 | if (err < 0) { | |
1634 | P9_DPRINTK(P9_DEBUG_VFS, "p9_client_symlink failed %d\n", err); | |
1635 | goto error; | |
1636 | } | |
1637 | ||
1638 | if (v9ses->cache) { | |
1639 | /* Now walk from the parent so we can get an unopened fid. */ | |
1640 | fid = p9_client_walk(dfid, 1, &name, 1); | |
1641 | if (IS_ERR(fid)) { | |
1642 | err = PTR_ERR(fid); | |
1643 | P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n", | |
1644 | err); | |
1645 | fid = NULL; | |
1646 | goto error; | |
1647 | } | |
1648 | ||
1649 | /* instantiate inode and assign the unopened fid to dentry */ | |
1650 | inode = v9fs_inode_from_fid(v9ses, fid, dir->i_sb); | |
1651 | if (IS_ERR(inode)) { | |
1652 | err = PTR_ERR(inode); | |
1653 | P9_DPRINTK(P9_DEBUG_VFS, "inode creation failed %d\n", | |
1654 | err); | |
1655 | goto error; | |
1656 | } | |
1657 | dentry->d_op = &v9fs_cached_dentry_operations; | |
1658 | d_instantiate(dentry, inode); | |
1659 | err = v9fs_fid_add(dentry, fid); | |
1660 | if (err < 0) | |
1661 | goto error; | |
1662 | fid = NULL; | |
1663 | } else { | |
1664 | /* Not in cached mode. No need to populate inode with stat */ | |
1665 | inode = v9fs_get_inode(dir->i_sb, S_IFLNK); | |
1666 | if (IS_ERR(inode)) { | |
1667 | err = PTR_ERR(inode); | |
1668 | goto error; | |
1669 | } | |
1670 | dentry->d_op = &v9fs_dentry_operations; | |
1671 | d_instantiate(dentry, inode); | |
1672 | } | |
1673 | ||
1674 | error: | |
1675 | if (fid) | |
1676 | p9_client_clunk(fid); | |
1677 | ||
1678 | return err; | |
1679 | } | |
1680 | ||
531b1094 LI |
1681 | /** |
1682 | * v9fs_vfs_symlink - helper function to create symlinks | |
1683 | * @dir: directory inode containing symlink | |
1684 | * @dentry: dentry for symlink | |
1685 | * @symname: symlink data | |
1686 | * | |
ee443996 | 1687 | * See Also: 9P2000.u RFC for more information |
531b1094 LI |
1688 | * |
1689 | */ | |
1690 | ||
1691 | static int | |
1692 | v9fs_vfs_symlink(struct inode *dir, struct dentry *dentry, const char *symname) | |
1693 | { | |
bd238fb4 LI |
1694 | P9_DPRINTK(P9_DEBUG_VFS, " %lu,%s,%s\n", dir->i_ino, |
1695 | dentry->d_name.name, symname); | |
531b1094 LI |
1696 | |
1697 | return v9fs_vfs_mkspecial(dir, dentry, S_IFLNK, symname); | |
1698 | } | |
1699 | ||
1700 | /** | |
1701 | * v9fs_vfs_link - create a hardlink | |
1702 | * @old_dentry: dentry for file to link to | |
1703 | * @dir: inode destination for new link | |
1704 | * @dentry: dentry for link | |
1705 | * | |
1706 | */ | |
1707 | ||
531b1094 LI |
1708 | static int |
1709 | v9fs_vfs_link(struct dentry *old_dentry, struct inode *dir, | |
1710 | struct dentry *dentry) | |
1711 | { | |
1712 | int retval; | |
bd238fb4 | 1713 | struct p9_fid *oldfid; |
531b1094 LI |
1714 | char *name; |
1715 | ||
bd238fb4 LI |
1716 | P9_DPRINTK(P9_DEBUG_VFS, |
1717 | " %lu,%s,%s\n", dir->i_ino, dentry->d_name.name, | |
531b1094 LI |
1718 | old_dentry->d_name.name); |
1719 | ||
da977b2c | 1720 | oldfid = v9fs_fid_clone(old_dentry); |
ba17674f | 1721 | if (IS_ERR(oldfid)) |
da977b2c | 1722 | return PTR_ERR(oldfid); |
531b1094 LI |
1723 | |
1724 | name = __getname(); | |
da977b2c EVH |
1725 | if (unlikely(!name)) { |
1726 | retval = -ENOMEM; | |
1727 | goto clunk_fid; | |
1728 | } | |
0710d36a | 1729 | |
16cce6d2 | 1730 | sprintf(name, "%d\n", oldfid->fid); |
bd238fb4 | 1731 | retval = v9fs_vfs_mkspecial(dir, dentry, P9_DMLINK, name); |
531b1094 | 1732 | __putname(name); |
2bad8471 | 1733 | |
da977b2c | 1734 | clunk_fid: |
bd238fb4 | 1735 | p9_client_clunk(oldfid); |
2bad8471 EVH |
1736 | return retval; |
1737 | } | |
1738 | ||
09d34ee5 EVH |
1739 | /** |
1740 | * v9fs_vfs_link_dotl - create a hardlink for dotl | |
1741 | * @old_dentry: dentry for file to link to | |
1742 | * @dir: inode destination for new link | |
1743 | * @dentry: dentry for link | |
1744 | * | |
1745 | */ | |
1746 | ||
1747 | static int | |
1748 | v9fs_vfs_link_dotl(struct dentry *old_dentry, struct inode *dir, | |
1749 | struct dentry *dentry) | |
1750 | { | |
1751 | int err; | |
1752 | struct p9_fid *dfid, *oldfid; | |
1753 | char *name; | |
1754 | struct v9fs_session_info *v9ses; | |
1755 | struct dentry *dir_dentry; | |
1756 | ||
1757 | P9_DPRINTK(P9_DEBUG_VFS, "dir ino: %lu, old_name: %s, new_name: %s\n", | |
1758 | dir->i_ino, old_dentry->d_name.name, | |
1759 | dentry->d_name.name); | |
1760 | ||
1761 | v9ses = v9fs_inode2v9ses(dir); | |
1762 | dir_dentry = v9fs_dentry_from_dir_inode(dir); | |
1763 | dfid = v9fs_fid_lookup(dir_dentry); | |
1764 | if (IS_ERR(dfid)) | |
1765 | return PTR_ERR(dfid); | |
1766 | ||
1767 | oldfid = v9fs_fid_lookup(old_dentry); | |
1768 | if (IS_ERR(oldfid)) | |
1769 | return PTR_ERR(oldfid); | |
1770 | ||
1771 | name = (char *) dentry->d_name.name; | |
1772 | ||
1773 | err = p9_client_link(dfid, oldfid, (char *)dentry->d_name.name); | |
1774 | ||
1775 | if (err < 0) { | |
1776 | P9_DPRINTK(P9_DEBUG_VFS, "p9_client_link failed %d\n", err); | |
1777 | return err; | |
1778 | } | |
1779 | ||
1780 | if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) { | |
1781 | /* Get the latest stat info from server. */ | |
1782 | struct p9_fid *fid; | |
1783 | struct p9_stat_dotl *st; | |
1784 | ||
1785 | fid = v9fs_fid_lookup(old_dentry); | |
1786 | if (IS_ERR(fid)) | |
1787 | return PTR_ERR(fid); | |
1788 | ||
1789 | st = p9_client_getattr_dotl(fid, P9_STATS_BASIC); | |
1790 | if (IS_ERR(st)) | |
1791 | return PTR_ERR(st); | |
1792 | ||
1793 | v9fs_stat2inode_dotl(st, old_dentry->d_inode); | |
1794 | ||
1795 | kfree(st); | |
1796 | } else { | |
1797 | /* Caching disabled. No need to get upto date stat info. | |
7de9c6ee AV |
1798 | * This dentry will be released immediately. So, just hold the |
1799 | * inode | |
09d34ee5 | 1800 | */ |
7de9c6ee | 1801 | ihold(old_dentry->d_inode); |
09d34ee5 EVH |
1802 | } |
1803 | ||
1804 | dentry->d_op = old_dentry->d_op; | |
1805 | d_instantiate(dentry, old_dentry->d_inode); | |
1806 | ||
1807 | return err; | |
1808 | } | |
1809 | ||
2bad8471 EVH |
1810 | /** |
1811 | * v9fs_vfs_mknod - create a special file | |
1812 | * @dir: inode destination for new link | |
1813 | * @dentry: dentry for file | |
1814 | * @mode: mode for creation | |
ee443996 | 1815 | * @rdev: device associated with special file |
2bad8471 EVH |
1816 | * |
1817 | */ | |
1818 | ||
1819 | static int | |
1820 | v9fs_vfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t rdev) | |
1821 | { | |
531b1094 LI |
1822 | int retval; |
1823 | char *name; | |
2bad8471 | 1824 | |
bd238fb4 LI |
1825 | P9_DPRINTK(P9_DEBUG_VFS, |
1826 | " %lu,%s mode: %x MAJOR: %u MINOR: %u\n", dir->i_ino, | |
2bad8471 EVH |
1827 | dentry->d_name.name, mode, MAJOR(rdev), MINOR(rdev)); |
1828 | ||
531b1094 LI |
1829 | if (!new_valid_dev(rdev)) |
1830 | return -EINVAL; | |
2bad8471 | 1831 | |
531b1094 | 1832 | name = __getname(); |
c0291a05 ET |
1833 | if (!name) |
1834 | return -ENOMEM; | |
2bad8471 EVH |
1835 | /* build extension */ |
1836 | if (S_ISBLK(mode)) | |
531b1094 | 1837 | sprintf(name, "b %u %u", MAJOR(rdev), MINOR(rdev)); |
2bad8471 | 1838 | else if (S_ISCHR(mode)) |
531b1094 | 1839 | sprintf(name, "c %u %u", MAJOR(rdev), MINOR(rdev)); |
73c592b9 | 1840 | else if (S_ISFIFO(mode)) |
531b1094 | 1841 | *name = 0; |
75cc5c9b VJ |
1842 | else if (S_ISSOCK(mode)) |
1843 | *name = 0; | |
2bad8471 | 1844 | else { |
531b1094 LI |
1845 | __putname(name); |
1846 | return -EINVAL; | |
2bad8471 EVH |
1847 | } |
1848 | ||
531b1094 LI |
1849 | retval = v9fs_vfs_mkspecial(dir, dentry, mode, name); |
1850 | __putname(name); | |
2bad8471 EVH |
1851 | |
1852 | return retval; | |
1853 | } | |
1854 | ||
4b43516a MK |
1855 | /** |
1856 | * v9fs_vfs_mknod_dotl - create a special file | |
1857 | * @dir: inode destination for new link | |
1858 | * @dentry: dentry for file | |
1859 | * @mode: mode for creation | |
1860 | * @rdev: device associated with special file | |
1861 | * | |
1862 | */ | |
1863 | static int | |
1864 | v9fs_vfs_mknod_dotl(struct inode *dir, struct dentry *dentry, int mode, | |
1865 | dev_t rdev) | |
1866 | { | |
1867 | int err; | |
1868 | char *name; | |
1869 | struct v9fs_session_info *v9ses; | |
1870 | struct p9_fid *fid = NULL, *dfid = NULL; | |
1871 | struct inode *inode; | |
1872 | gid_t gid; | |
1873 | struct p9_qid qid; | |
01a622bd | 1874 | struct dentry *dir_dentry; |
4b43516a MK |
1875 | |
1876 | P9_DPRINTK(P9_DEBUG_VFS, | |
1877 | " %lu,%s mode: %x MAJOR: %u MINOR: %u\n", dir->i_ino, | |
1878 | dentry->d_name.name, mode, MAJOR(rdev), MINOR(rdev)); | |
1879 | ||
1880 | if (!new_valid_dev(rdev)) | |
1881 | return -EINVAL; | |
1882 | ||
1883 | v9ses = v9fs_inode2v9ses(dir); | |
1884 | dir_dentry = v9fs_dentry_from_dir_inode(dir); | |
01a622bd | 1885 | dfid = v9fs_fid_lookup(dir_dentry); |
4b43516a MK |
1886 | if (IS_ERR(dfid)) { |
1887 | err = PTR_ERR(dfid); | |
1888 | P9_DPRINTK(P9_DEBUG_VFS, "fid lookup failed %d\n", err); | |
1889 | dfid = NULL; | |
1890 | goto error; | |
1891 | } | |
1892 | ||
1893 | gid = v9fs_get_fsgid_for_create(dir); | |
4b43516a MK |
1894 | |
1895 | name = (char *) dentry->d_name.name; | |
1896 | ||
1897 | err = p9_client_mknod_dotl(dfid, name, mode, rdev, gid, &qid); | |
1898 | if (err < 0) | |
1899 | goto error; | |
1900 | ||
1901 | /* instantiate inode and assign the unopened fid to the dentry */ | |
1902 | if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) { | |
1903 | fid = p9_client_walk(dfid, 1, &name, 1); | |
1904 | if (IS_ERR(fid)) { | |
1905 | err = PTR_ERR(fid); | |
1906 | P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n", | |
1907 | err); | |
1908 | fid = NULL; | |
1909 | goto error; | |
1910 | } | |
1911 | ||
1912 | inode = v9fs_inode_from_fid(v9ses, fid, dir->i_sb); | |
1913 | if (IS_ERR(inode)) { | |
1914 | err = PTR_ERR(inode); | |
1915 | P9_DPRINTK(P9_DEBUG_VFS, "inode creation failed %d\n", | |
1916 | err); | |
1917 | goto error; | |
1918 | } | |
1919 | dentry->d_op = &v9fs_cached_dentry_operations; | |
1920 | d_instantiate(dentry, inode); | |
1921 | err = v9fs_fid_add(dentry, fid); | |
1922 | if (err < 0) | |
1923 | goto error; | |
1924 | fid = NULL; | |
1925 | } else { | |
1926 | /* | |
1927 | * Not in cached mode. No need to populate inode with stat. | |
1928 | * socket syscall returns a fd, so we need instantiate | |
1929 | */ | |
1930 | inode = v9fs_get_inode(dir->i_sb, mode); | |
1931 | if (IS_ERR(inode)) { | |
1932 | err = PTR_ERR(inode); | |
1933 | goto error; | |
1934 | } | |
1935 | dentry->d_op = &v9fs_dentry_operations; | |
1936 | d_instantiate(dentry, inode); | |
1937 | } | |
1938 | ||
1939 | error: | |
1940 | if (fid) | |
1941 | p9_client_clunk(fid); | |
1942 | return err; | |
1943 | } | |
1944 | ||
9b6533c9 SK |
1945 | static const struct inode_operations v9fs_dir_inode_operations_dotu = { |
1946 | .create = v9fs_vfs_create, | |
1947 | .lookup = v9fs_vfs_lookup, | |
1948 | .symlink = v9fs_vfs_symlink, | |
50cc42ff | 1949 | .link = v9fs_vfs_link, |
9b6533c9 SK |
1950 | .unlink = v9fs_vfs_unlink, |
1951 | .mkdir = v9fs_vfs_mkdir, | |
1952 | .rmdir = v9fs_vfs_rmdir, | |
1d76e313 | 1953 | .mknod = v9fs_vfs_mknod, |
9b6533c9 SK |
1954 | .rename = v9fs_vfs_rename, |
1955 | .getattr = v9fs_vfs_getattr, | |
1956 | .setattr = v9fs_vfs_setattr, | |
1957 | }; | |
1958 | ||
1959 | static const struct inode_operations v9fs_dir_inode_operations_dotl = { | |
5643135a | 1960 | .create = v9fs_vfs_create_dotl, |
2bad8471 | 1961 | .lookup = v9fs_vfs_lookup, |
50cc42ff VJJ |
1962 | .link = v9fs_vfs_link_dotl, |
1963 | .symlink = v9fs_vfs_symlink_dotl, | |
2bad8471 | 1964 | .unlink = v9fs_vfs_unlink, |
01a622bd | 1965 | .mkdir = v9fs_vfs_mkdir_dotl, |
2bad8471 | 1966 | .rmdir = v9fs_vfs_rmdir, |
4b43516a | 1967 | .mknod = v9fs_vfs_mknod_dotl, |
2bad8471 | 1968 | .rename = v9fs_vfs_rename, |
f0853122 | 1969 | .getattr = v9fs_vfs_getattr_dotl, |
87d7845a | 1970 | .setattr = v9fs_vfs_setattr_dotl, |
ebf46264 AK |
1971 | .setxattr = generic_setxattr, |
1972 | .getxattr = generic_getxattr, | |
1973 | .removexattr = generic_removexattr, | |
1974 | .listxattr = v9fs_listxattr, | |
85ff872d | 1975 | .check_acl = v9fs_check_acl, |
2bad8471 EVH |
1976 | }; |
1977 | ||
754661f1 | 1978 | static const struct inode_operations v9fs_dir_inode_operations = { |
b501611a EVH |
1979 | .create = v9fs_vfs_create, |
1980 | .lookup = v9fs_vfs_lookup, | |
1981 | .unlink = v9fs_vfs_unlink, | |
1982 | .mkdir = v9fs_vfs_mkdir, | |
1983 | .rmdir = v9fs_vfs_rmdir, | |
1984 | .mknod = v9fs_vfs_mknod, | |
1985 | .rename = v9fs_vfs_rename, | |
1986 | .getattr = v9fs_vfs_getattr, | |
1987 | .setattr = v9fs_vfs_setattr, | |
1988 | }; | |
1989 | ||
754661f1 | 1990 | static const struct inode_operations v9fs_file_inode_operations = { |
2bad8471 EVH |
1991 | .getattr = v9fs_vfs_getattr, |
1992 | .setattr = v9fs_vfs_setattr, | |
1993 | }; | |
1994 | ||
9b6533c9 | 1995 | static const struct inode_operations v9fs_file_inode_operations_dotl = { |
f0853122 | 1996 | .getattr = v9fs_vfs_getattr_dotl, |
87d7845a | 1997 | .setattr = v9fs_vfs_setattr_dotl, |
ebf46264 AK |
1998 | .setxattr = generic_setxattr, |
1999 | .getxattr = generic_getxattr, | |
2000 | .removexattr = generic_removexattr, | |
2001 | .listxattr = v9fs_listxattr, | |
85ff872d | 2002 | .check_acl = v9fs_check_acl, |
9b6533c9 SK |
2003 | }; |
2004 | ||
754661f1 | 2005 | static const struct inode_operations v9fs_symlink_inode_operations = { |
204f2f0e | 2006 | .readlink = generic_readlink, |
2bad8471 EVH |
2007 | .follow_link = v9fs_vfs_follow_link, |
2008 | .put_link = v9fs_vfs_put_link, | |
2009 | .getattr = v9fs_vfs_getattr, | |
2010 | .setattr = v9fs_vfs_setattr, | |
2011 | }; | |
9b6533c9 SK |
2012 | |
2013 | static const struct inode_operations v9fs_symlink_inode_operations_dotl = { | |
2014 | .readlink = generic_readlink, | |
2015 | .follow_link = v9fs_vfs_follow_link, | |
2016 | .put_link = v9fs_vfs_put_link, | |
f0853122 | 2017 | .getattr = v9fs_vfs_getattr_dotl, |
87d7845a | 2018 | .setattr = v9fs_vfs_setattr_dotl, |
ebf46264 AK |
2019 | .setxattr = generic_setxattr, |
2020 | .getxattr = generic_getxattr, | |
2021 | .removexattr = generic_removexattr, | |
2022 | .listxattr = v9fs_listxattr, | |
9b6533c9 | 2023 | }; |