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> |
bd238fb4 LI |
38 | #include <net/9p/9p.h> |
39 | #include <net/9p/client.h> | |
2bad8471 | 40 | |
2bad8471 | 41 | #include "v9fs.h" |
2bad8471 | 42 | #include "v9fs_vfs.h" |
2bad8471 | 43 | #include "fid.h" |
60e78d2c | 44 | #include "cache.h" |
2bad8471 | 45 | |
754661f1 | 46 | static const struct inode_operations v9fs_dir_inode_operations; |
9b6533c9 SK |
47 | static const struct inode_operations v9fs_dir_inode_operations_dotu; |
48 | static const struct inode_operations v9fs_dir_inode_operations_dotl; | |
754661f1 | 49 | static const struct inode_operations v9fs_file_inode_operations; |
9b6533c9 | 50 | static const struct inode_operations v9fs_file_inode_operations_dotl; |
754661f1 | 51 | static const struct inode_operations v9fs_symlink_inode_operations; |
9b6533c9 | 52 | static const struct inode_operations v9fs_symlink_inode_operations_dotl; |
2bad8471 EVH |
53 | |
54 | /** | |
55 | * unixmode2p9mode - convert unix mode bits to plan 9 | |
56 | * @v9ses: v9fs session information | |
57 | * @mode: mode to convert | |
58 | * | |
59 | */ | |
60 | ||
73c592b9 | 61 | static int unixmode2p9mode(struct v9fs_session_info *v9ses, int mode) |
2bad8471 EVH |
62 | { |
63 | int res; | |
64 | res = mode & 0777; | |
65 | if (S_ISDIR(mode)) | |
bd238fb4 | 66 | res |= P9_DMDIR; |
dd6102fb | 67 | if (v9fs_proto_dotu(v9ses)) { |
2bad8471 | 68 | if (S_ISLNK(mode)) |
bd238fb4 | 69 | res |= P9_DMSYMLINK; |
2bad8471 EVH |
70 | if (v9ses->nodev == 0) { |
71 | if (S_ISSOCK(mode)) | |
bd238fb4 | 72 | res |= P9_DMSOCKET; |
2bad8471 | 73 | if (S_ISFIFO(mode)) |
bd238fb4 | 74 | res |= P9_DMNAMEDPIPE; |
2bad8471 | 75 | if (S_ISBLK(mode)) |
bd238fb4 | 76 | res |= P9_DMDEVICE; |
2bad8471 | 77 | if (S_ISCHR(mode)) |
bd238fb4 | 78 | res |= P9_DMDEVICE; |
2bad8471 EVH |
79 | } |
80 | ||
81 | if ((mode & S_ISUID) == S_ISUID) | |
bd238fb4 | 82 | res |= P9_DMSETUID; |
2bad8471 | 83 | if ((mode & S_ISGID) == S_ISGID) |
bd238fb4 | 84 | res |= P9_DMSETGID; |
d199d652 AL |
85 | if ((mode & S_ISVTX) == S_ISVTX) |
86 | res |= P9_DMSETVTX; | |
bd238fb4 LI |
87 | if ((mode & P9_DMLINK)) |
88 | res |= P9_DMLINK; | |
2bad8471 EVH |
89 | } |
90 | ||
91 | return res; | |
92 | } | |
93 | ||
94 | /** | |
95 | * p9mode2unixmode- convert plan9 mode bits to unix mode bits | |
96 | * @v9ses: v9fs session information | |
97 | * @mode: mode to convert | |
98 | * | |
99 | */ | |
100 | ||
73c592b9 | 101 | static int p9mode2unixmode(struct v9fs_session_info *v9ses, int mode) |
2bad8471 EVH |
102 | { |
103 | int res; | |
104 | ||
105 | res = mode & 0777; | |
106 | ||
bd238fb4 | 107 | if ((mode & P9_DMDIR) == P9_DMDIR) |
2bad8471 | 108 | res |= S_IFDIR; |
dd6102fb | 109 | else if ((mode & P9_DMSYMLINK) && (v9fs_proto_dotu(v9ses))) |
2bad8471 | 110 | res |= S_IFLNK; |
dd6102fb | 111 | else if ((mode & P9_DMSOCKET) && (v9fs_proto_dotu(v9ses)) |
2bad8471 EVH |
112 | && (v9ses->nodev == 0)) |
113 | res |= S_IFSOCK; | |
dd6102fb | 114 | else if ((mode & P9_DMNAMEDPIPE) && (v9fs_proto_dotu(v9ses)) |
2bad8471 EVH |
115 | && (v9ses->nodev == 0)) |
116 | res |= S_IFIFO; | |
dd6102fb | 117 | else if ((mode & P9_DMDEVICE) && (v9fs_proto_dotu(v9ses)) |
2bad8471 EVH |
118 | && (v9ses->nodev == 0)) |
119 | res |= S_IFBLK; | |
120 | else | |
121 | res |= S_IFREG; | |
122 | ||
dd6102fb | 123 | if (v9fs_proto_dotu(v9ses)) { |
bd238fb4 | 124 | if ((mode & P9_DMSETUID) == P9_DMSETUID) |
2bad8471 EVH |
125 | res |= S_ISUID; |
126 | ||
bd238fb4 | 127 | if ((mode & P9_DMSETGID) == P9_DMSETGID) |
2bad8471 | 128 | res |= S_ISGID; |
d199d652 AL |
129 | |
130 | if ((mode & P9_DMSETVTX) == P9_DMSETVTX) | |
131 | res |= S_ISVTX; | |
2bad8471 EVH |
132 | } |
133 | ||
134 | return res; | |
135 | } | |
136 | ||
ee443996 EVH |
137 | /** |
138 | * v9fs_uflags2omode- convert posix open flags to plan 9 mode bits | |
139 | * @uflags: flags to convert | |
2e4bef41 | 140 | * @extended: if .u extensions are active |
ee443996 EVH |
141 | */ |
142 | ||
2e4bef41 | 143 | int v9fs_uflags2omode(int uflags, int extended) |
6a3124a3 LI |
144 | { |
145 | int ret; | |
146 | ||
147 | ret = 0; | |
148 | switch (uflags&3) { | |
149 | default: | |
150 | case O_RDONLY: | |
bd238fb4 | 151 | ret = P9_OREAD; |
6a3124a3 LI |
152 | break; |
153 | ||
154 | case O_WRONLY: | |
bd238fb4 | 155 | ret = P9_OWRITE; |
6a3124a3 LI |
156 | break; |
157 | ||
158 | case O_RDWR: | |
bd238fb4 | 159 | ret = P9_ORDWR; |
6a3124a3 LI |
160 | break; |
161 | } | |
162 | ||
6a3124a3 | 163 | if (uflags & O_TRUNC) |
bd238fb4 | 164 | ret |= P9_OTRUNC; |
6a3124a3 | 165 | |
2e4bef41 EVH |
166 | if (extended) { |
167 | if (uflags & O_EXCL) | |
168 | ret |= P9_OEXCL; | |
169 | ||
170 | if (uflags & O_APPEND) | |
171 | ret |= P9_OAPPEND; | |
172 | } | |
6a3124a3 LI |
173 | |
174 | return ret; | |
175 | } | |
176 | ||
2bad8471 | 177 | /** |
531b1094 | 178 | * v9fs_blank_wstat - helper function to setup a 9P stat structure |
531b1094 | 179 | * @wstat: structure to initialize |
2bad8471 EVH |
180 | * |
181 | */ | |
182 | ||
7a4439c4 | 183 | void |
bd238fb4 | 184 | v9fs_blank_wstat(struct p9_wstat *wstat) |
2bad8471 | 185 | { |
531b1094 LI |
186 | wstat->type = ~0; |
187 | wstat->dev = ~0; | |
188 | wstat->qid.type = ~0; | |
189 | wstat->qid.version = ~0; | |
190 | *((long long *)&wstat->qid.path) = ~0; | |
191 | wstat->mode = ~0; | |
192 | wstat->atime = ~0; | |
193 | wstat->mtime = ~0; | |
194 | wstat->length = ~0; | |
195 | wstat->name = NULL; | |
196 | wstat->uid = NULL; | |
197 | wstat->gid = NULL; | |
198 | wstat->muid = NULL; | |
199 | wstat->n_uid = ~0; | |
200 | wstat->n_gid = ~0; | |
201 | wstat->n_muid = ~0; | |
202 | wstat->extension = NULL; | |
2bad8471 EVH |
203 | } |
204 | ||
60e78d2c AK |
205 | #ifdef CONFIG_9P_FSCACHE |
206 | /** | |
207 | * v9fs_alloc_inode - helper function to allocate an inode | |
208 | * This callback is executed before setting up the inode so that we | |
209 | * can associate a vcookie with each inode. | |
210 | * | |
211 | */ | |
212 | ||
213 | struct inode *v9fs_alloc_inode(struct super_block *sb) | |
214 | { | |
215 | struct v9fs_cookie *vcookie; | |
216 | vcookie = (struct v9fs_cookie *)kmem_cache_alloc(vcookie_cache, | |
217 | GFP_KERNEL); | |
218 | if (!vcookie) | |
219 | return NULL; | |
220 | ||
221 | vcookie->fscache = NULL; | |
222 | vcookie->qid = NULL; | |
223 | spin_lock_init(&vcookie->lock); | |
224 | return &vcookie->inode; | |
225 | } | |
226 | ||
227 | /** | |
228 | * v9fs_destroy_inode - destroy an inode | |
229 | * | |
230 | */ | |
231 | ||
232 | void v9fs_destroy_inode(struct inode *inode) | |
233 | { | |
234 | kmem_cache_free(vcookie_cache, v9fs_inode2cookie(inode)); | |
235 | } | |
236 | #endif | |
237 | ||
09d34ee5 EVH |
238 | /** |
239 | * v9fs_get_fsgid_for_create - Helper function to get the gid for creating a | |
240 | * new file system object. This checks the S_ISGID to determine the owning | |
241 | * group of the new file system object. | |
242 | */ | |
243 | ||
244 | static gid_t v9fs_get_fsgid_for_create(struct inode *dir_inode) | |
245 | { | |
246 | BUG_ON(dir_inode == NULL); | |
247 | ||
248 | if (dir_inode->i_mode & S_ISGID) { | |
249 | /* set_gid bit is set.*/ | |
250 | return dir_inode->i_gid; | |
251 | } | |
252 | return current_fsgid(); | |
253 | } | |
254 | ||
255 | /** | |
256 | * v9fs_dentry_from_dir_inode - helper function to get the dentry from | |
257 | * dir inode. | |
258 | * | |
259 | */ | |
260 | ||
261 | struct dentry *v9fs_dentry_from_dir_inode(struct inode *inode) | |
262 | { | |
263 | struct dentry *dentry; | |
264 | ||
265 | spin_lock(&dcache_lock); | |
266 | /* Directory should have only one entry. */ | |
267 | BUG_ON(S_ISDIR(inode->i_mode) && !list_is_singular(&inode->i_dentry)); | |
268 | dentry = list_entry(inode->i_dentry.next, struct dentry, d_alias); | |
269 | spin_unlock(&dcache_lock); | |
270 | return dentry; | |
271 | } | |
272 | ||
2bad8471 EVH |
273 | /** |
274 | * v9fs_get_inode - helper function to setup an inode | |
275 | * @sb: superblock | |
276 | * @mode: mode to setup inode with | |
277 | * | |
278 | */ | |
279 | ||
280 | struct inode *v9fs_get_inode(struct super_block *sb, int mode) | |
281 | { | |
2bb54115 | 282 | int err; |
6a3124a3 | 283 | struct inode *inode; |
b501611a | 284 | struct v9fs_session_info *v9ses = sb->s_fs_info; |
2bad8471 | 285 | |
bd238fb4 | 286 | P9_DPRINTK(P9_DEBUG_VFS, "super block: %p mode: %o\n", sb, mode); |
2bad8471 EVH |
287 | |
288 | inode = new_inode(sb); | |
2bb54115 AK |
289 | if (!inode) { |
290 | P9_EPRINTK(KERN_WARNING, "Problem allocating inode\n"); | |
48559b4c | 291 | return ERR_PTR(-ENOMEM); |
2bb54115 AK |
292 | } |
293 | ||
217f206d | 294 | inode_init_owner(inode, NULL, mode); |
2bb54115 AK |
295 | inode->i_blocks = 0; |
296 | inode->i_rdev = 0; | |
297 | inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME; | |
298 | inode->i_mapping->a_ops = &v9fs_addr_operations; | |
299 | ||
300 | switch (mode & S_IFMT) { | |
301 | case S_IFIFO: | |
302 | case S_IFBLK: | |
303 | case S_IFCHR: | |
304 | case S_IFSOCK: | |
dd6102fb | 305 | if (!v9fs_proto_dotu(v9ses)) { |
bd238fb4 | 306 | P9_DPRINTK(P9_DEBUG_ERROR, |
2bb54115 AK |
307 | "special files without extended mode\n"); |
308 | err = -EINVAL; | |
309 | goto error; | |
2bad8471 | 310 | } |
2bb54115 AK |
311 | init_special_inode(inode, inode->i_mode, inode->i_rdev); |
312 | break; | |
313 | case S_IFREG: | |
9b6533c9 SK |
314 | if (v9fs_proto_dotl(v9ses)) { |
315 | inode->i_op = &v9fs_file_inode_operations_dotl; | |
316 | inode->i_fop = &v9fs_file_operations_dotl; | |
317 | } else { | |
318 | inode->i_op = &v9fs_file_inode_operations; | |
319 | inode->i_fop = &v9fs_file_operations; | |
320 | } | |
321 | ||
2bb54115 | 322 | break; |
9b6533c9 | 323 | |
2bb54115 | 324 | case S_IFLNK: |
9b6533c9 SK |
325 | if (!v9fs_proto_dotu(v9ses) && !v9fs_proto_dotl(v9ses)) { |
326 | P9_DPRINTK(P9_DEBUG_ERROR, "extended modes used with " | |
327 | "legacy protocol.\n"); | |
2bb54115 AK |
328 | err = -EINVAL; |
329 | goto error; | |
330 | } | |
9b6533c9 SK |
331 | |
332 | if (v9fs_proto_dotl(v9ses)) | |
333 | inode->i_op = &v9fs_symlink_inode_operations_dotl; | |
334 | else | |
335 | inode->i_op = &v9fs_symlink_inode_operations; | |
336 | ||
2bb54115 AK |
337 | break; |
338 | case S_IFDIR: | |
339 | inc_nlink(inode); | |
9b6533c9 SK |
340 | if (v9fs_proto_dotl(v9ses)) |
341 | inode->i_op = &v9fs_dir_inode_operations_dotl; | |
342 | else if (v9fs_proto_dotu(v9ses)) | |
343 | inode->i_op = &v9fs_dir_inode_operations_dotu; | |
2bb54115 AK |
344 | else |
345 | inode->i_op = &v9fs_dir_inode_operations; | |
9b6533c9 SK |
346 | |
347 | if (v9fs_proto_dotl(v9ses)) | |
348 | inode->i_fop = &v9fs_dir_operations_dotl; | |
349 | else | |
350 | inode->i_fop = &v9fs_dir_operations; | |
351 | ||
2bb54115 AK |
352 | break; |
353 | default: | |
354 | P9_DPRINTK(P9_DEBUG_ERROR, "BAD mode 0x%x S_IFMT 0x%x\n", | |
355 | mode, mode & S_IFMT); | |
356 | err = -EINVAL; | |
357 | goto error; | |
2bad8471 | 358 | } |
2bb54115 | 359 | |
2bad8471 | 360 | return inode; |
2bb54115 AK |
361 | |
362 | error: | |
363 | iput(inode); | |
364 | return ERR_PTR(err); | |
2bad8471 EVH |
365 | } |
366 | ||
bd238fb4 | 367 | /* |
6a3124a3 LI |
368 | static struct v9fs_fid* |
369 | v9fs_clone_walk(struct v9fs_session_info *v9ses, u32 fid, struct dentry *dentry) | |
370 | { | |
371 | int err; | |
736c4b85 | 372 | int nfid; |
6a3124a3 LI |
373 | struct v9fs_fid *ret; |
374 | struct v9fs_fcall *fcall; | |
375 | ||
376 | nfid = v9fs_get_idpool(&v9ses->fidpool); | |
377 | if (nfid < 0) { | |
0b8dd177 | 378 | eprintk(KERN_WARNING, "no free fids available\n"); |
731805b4 | 379 | return ERR_PTR(-ENOSPC); |
0b8dd177 LI |
380 | } |
381 | ||
6a3124a3 LI |
382 | err = v9fs_t_walk(v9ses, fid, nfid, (char *) dentry->d_name.name, |
383 | &fcall); | |
384 | ||
385 | if (err < 0) { | |
41e5a6ac LI |
386 | if (fcall && fcall->id == RWALK) |
387 | goto clunk_fid; | |
388 | ||
6a3124a3 LI |
389 | PRINT_FCALL_ERROR("walk error", fcall); |
390 | v9fs_put_idpool(nfid, &v9ses->fidpool); | |
391 | goto error; | |
0b8dd177 | 392 | } |
6a3124a3 | 393 | |
3cf6429a LI |
394 | kfree(fcall); |
395 | fcall = NULL; | |
6a3124a3 LI |
396 | ret = v9fs_fid_create(v9ses, nfid); |
397 | if (!ret) { | |
398 | err = -ENOMEM; | |
399 | goto clunk_fid; | |
400 | } | |
0b8dd177 | 401 | |
6a3124a3 LI |
402 | err = v9fs_fid_insert(ret, dentry); |
403 | if (err < 0) { | |
404 | v9fs_fid_destroy(ret); | |
405 | goto clunk_fid; | |
0b8dd177 | 406 | } |
2bad8471 | 407 | |
6a3124a3 | 408 | return ret; |
2bad8471 | 409 | |
6a3124a3 LI |
410 | clunk_fid: |
411 | v9fs_t_clunk(v9ses, nfid); | |
2bad8471 | 412 | |
6a3124a3 LI |
413 | error: |
414 | kfree(fcall); | |
415 | return ERR_PTR(err); | |
416 | } | |
bd238fb4 | 417 | */ |
2bad8471 | 418 | |
60e78d2c AK |
419 | |
420 | /** | |
421 | * v9fs_clear_inode - release an inode | |
422 | * @inode: inode to release | |
423 | * | |
424 | */ | |
425 | void v9fs_clear_inode(struct inode *inode) | |
426 | { | |
427 | filemap_fdatawrite(inode->i_mapping); | |
428 | ||
429 | #ifdef CONFIG_9P_FSCACHE | |
430 | v9fs_cache_inode_put_cookie(inode); | |
431 | #endif | |
432 | } | |
433 | ||
5174fdab | 434 | static struct inode * |
f0853122 | 435 | v9fs_inode(struct v9fs_session_info *v9ses, struct p9_fid *fid, |
6a3124a3 LI |
436 | struct super_block *sb) |
437 | { | |
438 | int err, umode; | |
f0853122 | 439 | struct inode *ret = NULL; |
51a87c55 | 440 | struct p9_wstat *st; |
531b1094 | 441 | |
bd238fb4 | 442 | st = p9_client_stat(fid); |
02bc3567 AK |
443 | if (IS_ERR(st)) |
444 | return ERR_CAST(st); | |
2bad8471 | 445 | |
bd238fb4 | 446 | umode = p9mode2unixmode(v9ses, st->mode); |
6a3124a3 LI |
447 | ret = v9fs_get_inode(sb, umode); |
448 | if (IS_ERR(ret)) { | |
449 | err = PTR_ERR(ret); | |
6a3124a3 LI |
450 | goto error; |
451 | } | |
2bad8471 | 452 | |
bd238fb4 LI |
453 | v9fs_stat2inode(st, ret, sb); |
454 | ret->i_ino = v9fs_qid2ino(&st->qid); | |
60e78d2c AK |
455 | |
456 | #ifdef CONFIG_9P_FSCACHE | |
457 | v9fs_vcookie_set_qid(ret, &st->qid); | |
458 | v9fs_cache_inode_get_cookie(ret); | |
459 | #endif | |
02bc3567 | 460 | p9stat_free(st); |
bd238fb4 | 461 | kfree(st); |
6a3124a3 | 462 | return ret; |
6a3124a3 | 463 | error: |
02bc3567 | 464 | p9stat_free(st); |
bd238fb4 | 465 | kfree(st); |
6a3124a3 | 466 | return ERR_PTR(err); |
2bad8471 EVH |
467 | } |
468 | ||
f0853122 SK |
469 | static struct inode * |
470 | v9fs_inode_dotl(struct v9fs_session_info *v9ses, struct p9_fid *fid, | |
471 | struct super_block *sb) | |
472 | { | |
473 | struct inode *ret = NULL; | |
474 | int err; | |
475 | struct p9_stat_dotl *st; | |
476 | ||
477 | st = p9_client_getattr_dotl(fid, P9_STATS_BASIC); | |
478 | if (IS_ERR(st)) | |
479 | return ERR_CAST(st); | |
480 | ||
481 | ret = v9fs_get_inode(sb, st->st_mode); | |
482 | if (IS_ERR(ret)) { | |
483 | err = PTR_ERR(ret); | |
484 | goto error; | |
485 | } | |
486 | ||
487 | v9fs_stat2inode_dotl(st, ret); | |
488 | ret->i_ino = v9fs_qid2ino(&st->qid); | |
489 | #ifdef CONFIG_9P_FSCACHE | |
490 | v9fs_vcookie_set_qid(ret, &st->qid); | |
491 | v9fs_cache_inode_get_cookie(ret); | |
492 | #endif | |
493 | kfree(st); | |
494 | return ret; | |
495 | error: | |
496 | kfree(st); | |
497 | return ERR_PTR(err); | |
498 | } | |
499 | ||
500 | /** | |
501 | * v9fs_inode_from_fid - Helper routine to populate an inode by | |
502 | * issuing a attribute request | |
503 | * @v9ses: session information | |
504 | * @fid: fid to issue attribute request for | |
505 | * @sb: superblock on which to create inode | |
506 | * | |
507 | */ | |
508 | static inline struct inode * | |
509 | v9fs_inode_from_fid(struct v9fs_session_info *v9ses, struct p9_fid *fid, | |
510 | struct super_block *sb) | |
511 | { | |
512 | if (v9fs_proto_dotl(v9ses)) | |
513 | return v9fs_inode_dotl(v9ses, fid, sb); | |
514 | else | |
515 | return v9fs_inode(v9ses, fid, sb); | |
516 | } | |
517 | ||
2bad8471 EVH |
518 | /** |
519 | * v9fs_remove - helper function to remove files and directories | |
73c592b9 EVH |
520 | * @dir: directory inode that is being deleted |
521 | * @file: dentry that is being deleted | |
522 | * @rmdir: removing a directory | |
2bad8471 EVH |
523 | * |
524 | */ | |
525 | ||
526 | static int v9fs_remove(struct inode *dir, struct dentry *file, int rmdir) | |
527 | { | |
d994f405 | 528 | int retval; |
bd238fb4 | 529 | struct inode *file_inode; |
bd238fb4 | 530 | struct p9_fid *v9fid; |
2bad8471 | 531 | |
bd238fb4 | 532 | P9_DPRINTK(P9_DEBUG_VFS, "inode: %p dentry: %p rmdir: %d\n", dir, file, |
2bad8471 EVH |
533 | rmdir); |
534 | ||
535 | file_inode = file->d_inode; | |
c959df9f | 536 | v9fid = v9fs_fid_clone(file); |
ba17674f | 537 | if (IS_ERR(v9fid)) |
da977b2c | 538 | return PTR_ERR(v9fid); |
2bad8471 | 539 | |
d994f405 AK |
540 | retval = p9_client_remove(v9fid); |
541 | if (!retval) | |
542 | drop_nlink(file_inode); | |
543 | return retval; | |
2bad8471 EVH |
544 | } |
545 | ||
6a3124a3 LI |
546 | static int |
547 | v9fs_open_created(struct inode *inode, struct file *file) | |
548 | { | |
549 | return 0; | |
550 | } | |
551 | ||
bd238fb4 | 552 | |
2bad8471 | 553 | /** |
bd238fb4 | 554 | * v9fs_create - Create a file |
ee443996 EVH |
555 | * @v9ses: session information |
556 | * @dir: directory that dentry is being created in | |
bd238fb4 | 557 | * @dentry: dentry that is being created |
0e15597e | 558 | * @extension: 9p2000.u extension string to support devices, etc. |
bd238fb4 LI |
559 | * @perm: create permissions |
560 | * @mode: open mode | |
2bad8471 EVH |
561 | * |
562 | */ | |
bd238fb4 LI |
563 | static struct p9_fid * |
564 | v9fs_create(struct v9fs_session_info *v9ses, struct inode *dir, | |
565 | struct dentry *dentry, char *extension, u32 perm, u8 mode) | |
2bad8471 | 566 | { |
6a3124a3 | 567 | int err; |
bd238fb4 LI |
568 | char *name; |
569 | struct p9_fid *dfid, *ofid, *fid; | |
6a3124a3 | 570 | struct inode *inode; |
6a3124a3 | 571 | |
51a87c55 EVH |
572 | P9_DPRINTK(P9_DEBUG_VFS, "name %s\n", dentry->d_name.name); |
573 | ||
bd238fb4 LI |
574 | err = 0; |
575 | ofid = NULL; | |
576 | fid = NULL; | |
577 | name = (char *) dentry->d_name.name; | |
6d27e64d | 578 | dfid = v9fs_fid_lookup(dentry->d_parent); |
ba17674f | 579 | if (IS_ERR(dfid)) { |
da977b2c | 580 | err = PTR_ERR(dfid); |
6d27e64d VJ |
581 | P9_DPRINTK(P9_DEBUG_VFS, "fid lookup failed %d\n", err); |
582 | return ERR_PTR(err); | |
da977b2c | 583 | } |
6a3124a3 | 584 | |
bd238fb4 LI |
585 | /* clone a fid to use for creation */ |
586 | ofid = p9_client_walk(dfid, 0, NULL, 1); | |
587 | if (IS_ERR(ofid)) { | |
588 | err = PTR_ERR(ofid); | |
51a87c55 | 589 | P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err); |
6d27e64d | 590 | return ERR_PTR(err); |
bd238fb4 | 591 | } |
6a3124a3 | 592 | |
bd238fb4 | 593 | err = p9_client_fcreate(ofid, name, perm, mode, extension); |
51a87c55 EVH |
594 | if (err < 0) { |
595 | P9_DPRINTK(P9_DEBUG_VFS, "p9_client_fcreate failed %d\n", err); | |
bd238fb4 | 596 | goto error; |
51a87c55 | 597 | } |
6a3124a3 | 598 | |
bd238fb4 | 599 | /* now walk from the parent so we can get unopened fid */ |
6d27e64d | 600 | fid = p9_client_walk(dfid, 1, &name, 1); |
bd238fb4 LI |
601 | if (IS_ERR(fid)) { |
602 | err = PTR_ERR(fid); | |
51a87c55 | 603 | P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err); |
bd238fb4 | 604 | fid = NULL; |
6a3124a3 | 605 | goto error; |
6d27e64d | 606 | } |
6a3124a3 | 607 | |
bd238fb4 LI |
608 | /* instantiate inode and assign the unopened fid to the dentry */ |
609 | inode = v9fs_inode_from_fid(v9ses, fid, dir->i_sb); | |
6a3124a3 LI |
610 | if (IS_ERR(inode)) { |
611 | err = PTR_ERR(inode); | |
51a87c55 | 612 | P9_DPRINTK(P9_DEBUG_VFS, "inode creation failed %d\n", err); |
6a3124a3 LI |
613 | goto error; |
614 | } | |
615 | ||
ba17674f | 616 | if (v9ses->cache) |
e03abc0c EVH |
617 | dentry->d_op = &v9fs_cached_dentry_operations; |
618 | else | |
619 | dentry->d_op = &v9fs_dentry_operations; | |
bd238fb4 | 620 | |
6a3124a3 | 621 | d_instantiate(dentry, inode); |
50fb6d2b AK |
622 | err = v9fs_fid_add(dentry, fid); |
623 | if (err < 0) | |
624 | goto error; | |
625 | ||
bd238fb4 | 626 | return ofid; |
6a3124a3 | 627 | |
bd238fb4 | 628 | error: |
bd238fb4 LI |
629 | if (ofid) |
630 | p9_client_clunk(ofid); | |
631 | ||
632 | if (fid) | |
633 | p9_client_clunk(fid); | |
634 | ||
635 | return ERR_PTR(err); | |
636 | } | |
637 | ||
638 | /** | |
639 | * v9fs_vfs_create - VFS hook to create files | |
ee443996 | 640 | * @dir: directory inode that is being created |
bd238fb4 LI |
641 | * @dentry: dentry that is being deleted |
642 | * @mode: create permissions | |
643 | * @nd: path information | |
644 | * | |
645 | */ | |
6a3124a3 | 646 | |
bd238fb4 LI |
647 | static int |
648 | v9fs_vfs_create(struct inode *dir, struct dentry *dentry, int mode, | |
649 | struct nameidata *nd) | |
650 | { | |
651 | int err; | |
652 | u32 perm; | |
653 | int flags; | |
654 | struct v9fs_session_info *v9ses; | |
655 | struct p9_fid *fid; | |
656 | struct file *filp; | |
657 | ||
658 | err = 0; | |
659 | fid = NULL; | |
660 | v9ses = v9fs_inode2v9ses(dir); | |
661 | perm = unixmode2p9mode(v9ses, mode); | |
662 | if (nd && nd->flags & LOOKUP_OPEN) | |
663 | flags = nd->intent.open.flags - 1; | |
664 | else | |
665 | flags = O_RDWR; | |
666 | ||
667 | fid = v9fs_create(v9ses, dir, dentry, NULL, perm, | |
dd6102fb SK |
668 | v9fs_uflags2omode(flags, |
669 | v9fs_proto_dotu(v9ses))); | |
bd238fb4 LI |
670 | if (IS_ERR(fid)) { |
671 | err = PTR_ERR(fid); | |
672 | fid = NULL; | |
673 | goto error; | |
674 | } | |
675 | ||
676 | /* if we are opening a file, assign the open fid to the file */ | |
677 | if (nd && nd->flags & LOOKUP_OPEN) { | |
6a3124a3 LI |
678 | filp = lookup_instantiate_filp(nd, dentry, v9fs_open_created); |
679 | if (IS_ERR(filp)) { | |
bd238fb4 LI |
680 | err = PTR_ERR(filp); |
681 | goto error; | |
6a3124a3 LI |
682 | } |
683 | ||
bd238fb4 LI |
684 | filp->private_data = fid; |
685 | } else | |
686 | p9_client_clunk(fid); | |
6a3124a3 LI |
687 | |
688 | return 0; | |
689 | ||
690 | error: | |
bd238fb4 LI |
691 | if (fid) |
692 | p9_client_clunk(fid); | |
6a3124a3 | 693 | |
6a3124a3 | 694 | return err; |
2bad8471 EVH |
695 | } |
696 | ||
697 | /** | |
698 | * v9fs_vfs_mkdir - VFS mkdir hook to create a directory | |
ee443996 | 699 | * @dir: inode that is being unlinked |
2bad8471 EVH |
700 | * @dentry: dentry that is being unlinked |
701 | * @mode: mode for new directory | |
702 | * | |
703 | */ | |
704 | ||
6a3124a3 | 705 | static int v9fs_vfs_mkdir(struct inode *dir, struct dentry *dentry, int mode) |
2bad8471 | 706 | { |
6a3124a3 | 707 | int err; |
bd238fb4 | 708 | u32 perm; |
6a3124a3 | 709 | struct v9fs_session_info *v9ses; |
bd238fb4 | 710 | struct p9_fid *fid; |
6a3124a3 | 711 | |
bd238fb4 LI |
712 | P9_DPRINTK(P9_DEBUG_VFS, "name %s\n", dentry->d_name.name); |
713 | err = 0; | |
6a3124a3 | 714 | v9ses = v9fs_inode2v9ses(dir); |
6a3124a3 | 715 | perm = unixmode2p9mode(v9ses, mode | S_IFDIR); |
bd238fb4 LI |
716 | fid = v9fs_create(v9ses, dir, dentry, NULL, perm, P9_OREAD); |
717 | if (IS_ERR(fid)) { | |
718 | err = PTR_ERR(fid); | |
719 | fid = NULL; | |
6a3124a3 LI |
720 | } |
721 | ||
bd238fb4 LI |
722 | if (fid) |
723 | p9_client_clunk(fid); | |
6a3124a3 | 724 | |
6a3124a3 | 725 | return err; |
2bad8471 EVH |
726 | } |
727 | ||
728 | /** | |
729 | * v9fs_vfs_lookup - VFS lookup hook to "walk" to a new inode | |
730 | * @dir: inode that is being walked from | |
731 | * @dentry: dentry that is being walked to? | |
732 | * @nameidata: path data | |
733 | * | |
734 | */ | |
735 | ||
736 | static struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry, | |
737 | struct nameidata *nameidata) | |
738 | { | |
739 | struct super_block *sb; | |
740 | struct v9fs_session_info *v9ses; | |
bd238fb4 | 741 | struct p9_fid *dfid, *fid; |
2bad8471 | 742 | struct inode *inode; |
bd238fb4 | 743 | char *name; |
2bad8471 EVH |
744 | int result = 0; |
745 | ||
bd238fb4 | 746 | P9_DPRINTK(P9_DEBUG_VFS, "dir: %p dentry: (%s) %p nameidata: %p\n", |
731805b4 | 747 | dir, dentry->d_name.name, dentry, nameidata); |
2bad8471 | 748 | |
11e9b49b SK |
749 | if (dentry->d_name.len > NAME_MAX) |
750 | return ERR_PTR(-ENAMETOOLONG); | |
751 | ||
2bad8471 EVH |
752 | sb = dir->i_sb; |
753 | v9ses = v9fs_inode2v9ses(dir); | |
bd238fb4 LI |
754 | dfid = v9fs_fid_lookup(dentry->d_parent); |
755 | if (IS_ERR(dfid)) | |
e231c2ee | 756 | return ERR_CAST(dfid); |
bd238fb4 LI |
757 | |
758 | name = (char *) dentry->d_name.name; | |
759 | fid = p9_client_walk(dfid, 1, &name, 1); | |
760 | if (IS_ERR(fid)) { | |
761 | result = PTR_ERR(fid); | |
2bad8471 | 762 | if (result == -ENOENT) { |
85e0df24 AK |
763 | inode = NULL; |
764 | goto inst_out; | |
2bad8471 | 765 | } |
2bad8471 | 766 | |
bd238fb4 | 767 | return ERR_PTR(result); |
2bad8471 EVH |
768 | } |
769 | ||
bd238fb4 LI |
770 | inode = v9fs_inode_from_fid(v9ses, fid, dir->i_sb); |
771 | if (IS_ERR(inode)) { | |
772 | result = PTR_ERR(inode); | |
773 | inode = NULL; | |
774 | goto error; | |
2bad8471 EVH |
775 | } |
776 | ||
bd238fb4 | 777 | result = v9fs_fid_add(dentry, fid); |
6a3124a3 | 778 | if (result < 0) |
bd238fb4 | 779 | goto error; |
6a3124a3 | 780 | |
85e0df24 AK |
781 | inst_out: |
782 | if (v9ses->cache) | |
e03abc0c EVH |
783 | dentry->d_op = &v9fs_cached_dentry_operations; |
784 | else | |
785 | dentry->d_op = &v9fs_dentry_operations; | |
2bad8471 EVH |
786 | |
787 | d_add(dentry, inode); | |
2bad8471 EVH |
788 | return NULL; |
789 | ||
bd238fb4 | 790 | error: |
62aa528e | 791 | p9_client_clunk(fid); |
da977b2c | 792 | |
2bad8471 EVH |
793 | return ERR_PTR(result); |
794 | } | |
795 | ||
796 | /** | |
797 | * v9fs_vfs_unlink - VFS unlink hook to delete an inode | |
798 | * @i: inode that is being unlinked | |
73c592b9 | 799 | * @d: dentry that is being unlinked |
2bad8471 EVH |
800 | * |
801 | */ | |
802 | ||
803 | static int v9fs_vfs_unlink(struct inode *i, struct dentry *d) | |
804 | { | |
805 | return v9fs_remove(i, d, 0); | |
806 | } | |
807 | ||
808 | /** | |
809 | * v9fs_vfs_rmdir - VFS unlink hook to delete a directory | |
810 | * @i: inode that is being unlinked | |
73c592b9 | 811 | * @d: dentry that is being unlinked |
2bad8471 EVH |
812 | * |
813 | */ | |
814 | ||
815 | static int v9fs_vfs_rmdir(struct inode *i, struct dentry *d) | |
816 | { | |
817 | return v9fs_remove(i, d, 1); | |
818 | } | |
819 | ||
820 | /** | |
821 | * v9fs_vfs_rename - VFS hook to rename an inode | |
822 | * @old_dir: old dir inode | |
823 | * @old_dentry: old dentry | |
824 | * @new_dir: new dir inode | |
825 | * @new_dentry: new dentry | |
826 | * | |
827 | */ | |
828 | ||
829 | static int | |
830 | v9fs_vfs_rename(struct inode *old_dir, struct dentry *old_dentry, | |
831 | struct inode *new_dir, struct dentry *new_dentry) | |
832 | { | |
bd238fb4 LI |
833 | struct inode *old_inode; |
834 | struct v9fs_session_info *v9ses; | |
835 | struct p9_fid *oldfid; | |
836 | struct p9_fid *olddirfid; | |
837 | struct p9_fid *newdirfid; | |
838 | struct p9_wstat wstat; | |
839 | int retval; | |
2bad8471 | 840 | |
bd238fb4 LI |
841 | P9_DPRINTK(P9_DEBUG_VFS, "\n"); |
842 | retval = 0; | |
843 | old_inode = old_dentry->d_inode; | |
844 | v9ses = v9fs_inode2v9ses(old_inode); | |
845 | oldfid = v9fs_fid_lookup(old_dentry); | |
ba17674f | 846 | if (IS_ERR(oldfid)) |
da977b2c EVH |
847 | return PTR_ERR(oldfid); |
848 | ||
849 | olddirfid = v9fs_fid_clone(old_dentry->d_parent); | |
ba17674f | 850 | if (IS_ERR(olddirfid)) { |
da977b2c | 851 | retval = PTR_ERR(olddirfid); |
bd238fb4 | 852 | goto done; |
da977b2c EVH |
853 | } |
854 | ||
855 | newdirfid = v9fs_fid_clone(new_dentry->d_parent); | |
ba17674f | 856 | if (IS_ERR(newdirfid)) { |
da977b2c | 857 | retval = PTR_ERR(newdirfid); |
bd238fb4 | 858 | goto clunk_olddir; |
2bad8471 EVH |
859 | } |
860 | ||
4681dbda SK |
861 | if (v9fs_proto_dotl(v9ses)) { |
862 | retval = p9_client_rename(oldfid, newdirfid, | |
863 | (char *) new_dentry->d_name.name); | |
864 | if (retval != -ENOSYS) | |
865 | goto clunk_newdir; | |
866 | } | |
867 | ||
2bad8471 EVH |
868 | /* 9P can only handle file rename in the same directory */ |
869 | if (memcmp(&olddirfid->qid, &newdirfid->qid, sizeof(newdirfid->qid))) { | |
bd238fb4 LI |
870 | P9_DPRINTK(P9_DEBUG_ERROR, |
871 | "old dir and new dir are different\n"); | |
621997cd | 872 | retval = -EXDEV; |
bd238fb4 | 873 | goto clunk_newdir; |
2bad8471 EVH |
874 | } |
875 | ||
531b1094 | 876 | v9fs_blank_wstat(&wstat); |
ba17674f | 877 | wstat.muid = v9ses->uname; |
531b1094 | 878 | wstat.name = (char *) new_dentry->d_name.name; |
bd238fb4 | 879 | retval = p9_client_wstat(oldfid, &wstat); |
2bad8471 | 880 | |
bd238fb4 | 881 | clunk_newdir: |
22150c4f | 882 | p9_client_clunk(newdirfid); |
2bad8471 | 883 | |
bd238fb4 | 884 | clunk_olddir: |
22150c4f | 885 | p9_client_clunk(olddirfid); |
da977b2c | 886 | |
bd238fb4 | 887 | done: |
2bad8471 EVH |
888 | return retval; |
889 | } | |
890 | ||
891 | /** | |
943ffb58 | 892 | * v9fs_vfs_getattr - retrieve file metadata |
ee443996 EVH |
893 | * @mnt: mount information |
894 | * @dentry: file to get attributes on | |
895 | * @stat: metadata structure to populate | |
2bad8471 EVH |
896 | * |
897 | */ | |
898 | ||
899 | static int | |
900 | v9fs_vfs_getattr(struct vfsmount *mnt, struct dentry *dentry, | |
901 | struct kstat *stat) | |
902 | { | |
bd238fb4 LI |
903 | int err; |
904 | struct v9fs_session_info *v9ses; | |
905 | struct p9_fid *fid; | |
51a87c55 | 906 | struct p9_wstat *st; |
bd238fb4 LI |
907 | |
908 | P9_DPRINTK(P9_DEBUG_VFS, "dentry: %p\n", dentry); | |
909 | err = -EPERM; | |
910 | v9ses = v9fs_inode2v9ses(dentry->d_inode); | |
60e78d2c | 911 | if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) |
9523a841 EVH |
912 | return simple_getattr(mnt, dentry, stat); |
913 | ||
bd238fb4 LI |
914 | fid = v9fs_fid_lookup(dentry); |
915 | if (IS_ERR(fid)) | |
da977b2c | 916 | return PTR_ERR(fid); |
2bad8471 | 917 | |
bd238fb4 LI |
918 | st = p9_client_stat(fid); |
919 | if (IS_ERR(st)) | |
920 | return PTR_ERR(st); | |
2bad8471 | 921 | |
bd238fb4 | 922 | v9fs_stat2inode(st, dentry->d_inode, dentry->d_inode->i_sb); |
2bad8471 | 923 | generic_fillattr(dentry->d_inode, stat); |
2bad8471 | 924 | |
bd238fb4 LI |
925 | kfree(st); |
926 | return 0; | |
2bad8471 EVH |
927 | } |
928 | ||
f0853122 SK |
929 | static int |
930 | v9fs_vfs_getattr_dotl(struct vfsmount *mnt, struct dentry *dentry, | |
931 | struct kstat *stat) | |
932 | { | |
933 | int err; | |
934 | struct v9fs_session_info *v9ses; | |
935 | struct p9_fid *fid; | |
936 | struct p9_stat_dotl *st; | |
937 | ||
938 | P9_DPRINTK(P9_DEBUG_VFS, "dentry: %p\n", dentry); | |
939 | err = -EPERM; | |
940 | v9ses = v9fs_inode2v9ses(dentry->d_inode); | |
941 | if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) | |
942 | return simple_getattr(mnt, dentry, stat); | |
943 | ||
944 | fid = v9fs_fid_lookup(dentry); | |
945 | if (IS_ERR(fid)) | |
946 | return PTR_ERR(fid); | |
947 | ||
948 | /* Ask for all the fields in stat structure. Server will return | |
949 | * whatever it supports | |
950 | */ | |
951 | ||
952 | st = p9_client_getattr_dotl(fid, P9_STATS_ALL); | |
953 | if (IS_ERR(st)) | |
954 | return PTR_ERR(st); | |
955 | ||
956 | v9fs_stat2inode_dotl(st, dentry->d_inode); | |
957 | generic_fillattr(dentry->d_inode, stat); | |
958 | /* Change block size to what the server returned */ | |
959 | stat->blksize = st->st_blksize; | |
960 | ||
961 | kfree(st); | |
962 | return 0; | |
963 | } | |
964 | ||
2bad8471 EVH |
965 | /** |
966 | * v9fs_vfs_setattr - set file metadata | |
967 | * @dentry: file whose metadata to set | |
968 | * @iattr: metadata assignment structure | |
969 | * | |
970 | */ | |
971 | ||
972 | static int v9fs_vfs_setattr(struct dentry *dentry, struct iattr *iattr) | |
973 | { | |
bd238fb4 LI |
974 | int retval; |
975 | struct v9fs_session_info *v9ses; | |
976 | struct p9_fid *fid; | |
977 | struct p9_wstat wstat; | |
2bad8471 | 978 | |
bd238fb4 LI |
979 | P9_DPRINTK(P9_DEBUG_VFS, "\n"); |
980 | retval = -EPERM; | |
981 | v9ses = v9fs_inode2v9ses(dentry->d_inode); | |
982 | fid = v9fs_fid_lookup(dentry); | |
da977b2c EVH |
983 | if(IS_ERR(fid)) |
984 | return PTR_ERR(fid); | |
2bad8471 | 985 | |
531b1094 | 986 | v9fs_blank_wstat(&wstat); |
2bad8471 | 987 | if (iattr->ia_valid & ATTR_MODE) |
531b1094 | 988 | wstat.mode = unixmode2p9mode(v9ses, iattr->ia_mode); |
2bad8471 EVH |
989 | |
990 | if (iattr->ia_valid & ATTR_MTIME) | |
531b1094 | 991 | wstat.mtime = iattr->ia_mtime.tv_sec; |
2bad8471 EVH |
992 | |
993 | if (iattr->ia_valid & ATTR_ATIME) | |
531b1094 | 994 | wstat.atime = iattr->ia_atime.tv_sec; |
2bad8471 EVH |
995 | |
996 | if (iattr->ia_valid & ATTR_SIZE) | |
531b1094 | 997 | wstat.length = iattr->ia_size; |
2bad8471 | 998 | |
dd6102fb | 999 | if (v9fs_proto_dotu(v9ses)) { |
531b1094 LI |
1000 | if (iattr->ia_valid & ATTR_UID) |
1001 | wstat.n_uid = iattr->ia_uid; | |
2bad8471 | 1002 | |
531b1094 LI |
1003 | if (iattr->ia_valid & ATTR_GID) |
1004 | wstat.n_gid = iattr->ia_gid; | |
2bad8471 EVH |
1005 | } |
1006 | ||
bd238fb4 LI |
1007 | retval = p9_client_wstat(fid, &wstat); |
1008 | if (retval >= 0) | |
1009 | retval = inode_setattr(dentry->d_inode, iattr); | |
2bad8471 | 1010 | |
bd238fb4 | 1011 | return retval; |
2bad8471 EVH |
1012 | } |
1013 | ||
87d7845a SK |
1014 | /** |
1015 | * v9fs_vfs_setattr_dotl - set file metadata | |
1016 | * @dentry: file whose metadata to set | |
1017 | * @iattr: metadata assignment structure | |
1018 | * | |
1019 | */ | |
1020 | ||
1021 | static int v9fs_vfs_setattr_dotl(struct dentry *dentry, struct iattr *iattr) | |
1022 | { | |
1023 | int retval; | |
1024 | struct v9fs_session_info *v9ses; | |
1025 | struct p9_fid *fid; | |
1026 | struct p9_iattr_dotl p9attr; | |
1027 | ||
1028 | P9_DPRINTK(P9_DEBUG_VFS, "\n"); | |
1029 | ||
1030 | retval = inode_change_ok(dentry->d_inode, iattr); | |
1031 | if (retval) | |
1032 | return retval; | |
1033 | ||
1034 | p9attr.valid = iattr->ia_valid; | |
1035 | p9attr.mode = iattr->ia_mode; | |
1036 | p9attr.uid = iattr->ia_uid; | |
1037 | p9attr.gid = iattr->ia_gid; | |
1038 | p9attr.size = iattr->ia_size; | |
1039 | p9attr.atime_sec = iattr->ia_atime.tv_sec; | |
1040 | p9attr.atime_nsec = iattr->ia_atime.tv_nsec; | |
1041 | p9attr.mtime_sec = iattr->ia_mtime.tv_sec; | |
1042 | p9attr.mtime_nsec = iattr->ia_mtime.tv_nsec; | |
1043 | ||
1044 | retval = -EPERM; | |
1045 | v9ses = v9fs_inode2v9ses(dentry->d_inode); | |
1046 | fid = v9fs_fid_lookup(dentry); | |
1047 | if (IS_ERR(fid)) | |
1048 | return PTR_ERR(fid); | |
1049 | ||
1050 | retval = p9_client_setattr(fid, &p9attr); | |
1051 | if (retval >= 0) | |
1052 | retval = inode_setattr(dentry->d_inode, iattr); | |
1053 | ||
1054 | return retval; | |
1055 | } | |
1056 | ||
2bad8471 | 1057 | /** |
531b1094 LI |
1058 | * v9fs_stat2inode - populate an inode structure with mistat info |
1059 | * @stat: Plan 9 metadata (mistat) structure | |
2bad8471 EVH |
1060 | * @inode: inode to populate |
1061 | * @sb: superblock of filesystem | |
1062 | * | |
1063 | */ | |
1064 | ||
1065 | void | |
51a87c55 | 1066 | v9fs_stat2inode(struct p9_wstat *stat, struct inode *inode, |
531b1094 | 1067 | struct super_block *sb) |
2bad8471 | 1068 | { |
531b1094 | 1069 | char ext[32]; |
5717144a AK |
1070 | char tag_name[14]; |
1071 | unsigned int i_nlink; | |
2bad8471 EVH |
1072 | struct v9fs_session_info *v9ses = sb->s_fs_info; |
1073 | ||
1074 | inode->i_nlink = 1; | |
1075 | ||
531b1094 LI |
1076 | inode->i_atime.tv_sec = stat->atime; |
1077 | inode->i_mtime.tv_sec = stat->mtime; | |
1078 | inode->i_ctime.tv_sec = stat->mtime; | |
2bad8471 | 1079 | |
bd32b82d LI |
1080 | inode->i_uid = v9ses->dfltuid; |
1081 | inode->i_gid = v9ses->dfltgid; | |
2bad8471 | 1082 | |
dd6102fb | 1083 | if (v9fs_proto_dotu(v9ses)) { |
531b1094 LI |
1084 | inode->i_uid = stat->n_uid; |
1085 | inode->i_gid = stat->n_gid; | |
2bad8471 | 1086 | } |
5717144a AK |
1087 | if ((S_ISREG(inode->i_mode)) || (S_ISDIR(inode->i_mode))) { |
1088 | if (v9fs_proto_dotu(v9ses) && (stat->extension[0] != '\0')) { | |
1089 | /* | |
1090 | * Hadlink support got added later to | |
1091 | * to the .u extension. So there can be | |
1092 | * server out there that doesn't support | |
1093 | * this even with .u extension. So check | |
1094 | * for non NULL stat->extension | |
1095 | */ | |
1096 | strncpy(ext, stat->extension, sizeof(ext)); | |
1097 | /* HARDLINKCOUNT %u */ | |
1098 | sscanf(ext, "%13s %u", tag_name, &i_nlink); | |
1099 | if (!strncmp(tag_name, "HARDLINKCOUNT", 13)) | |
1100 | inode->i_nlink = i_nlink; | |
1101 | } | |
1102 | } | |
531b1094 | 1103 | inode->i_mode = p9mode2unixmode(v9ses, stat->mode); |
2bad8471 EVH |
1104 | if ((S_ISBLK(inode->i_mode)) || (S_ISCHR(inode->i_mode))) { |
1105 | char type = 0; | |
1106 | int major = -1; | |
1107 | int minor = -1; | |
531b1094 | 1108 | |
51a87c55 | 1109 | strncpy(ext, stat->extension, sizeof(ext)); |
531b1094 | 1110 | sscanf(ext, "%c %u %u", &type, &major, &minor); |
2bad8471 EVH |
1111 | switch (type) { |
1112 | case 'c': | |
1113 | inode->i_mode &= ~S_IFBLK; | |
1114 | inode->i_mode |= S_IFCHR; | |
1115 | break; | |
1116 | case 'b': | |
1117 | break; | |
1118 | default: | |
bd238fb4 | 1119 | P9_DPRINTK(P9_DEBUG_ERROR, |
51a87c55 EVH |
1120 | "Unknown special type %c %s\n", type, |
1121 | stat->extension); | |
2bad8471 EVH |
1122 | }; |
1123 | inode->i_rdev = MKDEV(major, minor); | |
57c7b4e6 | 1124 | init_special_inode(inode, inode->i_mode, inode->i_rdev); |
2bad8471 EVH |
1125 | } else |
1126 | inode->i_rdev = 0; | |
1127 | ||
7549ae3e | 1128 | i_size_write(inode, stat->length); |
2bad8471 | 1129 | |
bd238fb4 | 1130 | /* not real number of blocks, but 512 byte ones ... */ |
7549ae3e | 1131 | inode->i_blocks = (i_size_read(inode) + 512 - 1) >> 9; |
2bad8471 EVH |
1132 | } |
1133 | ||
f0853122 SK |
1134 | /** |
1135 | * v9fs_stat2inode_dotl - populate an inode structure with stat info | |
1136 | * @stat: stat structure | |
1137 | * @inode: inode to populate | |
1138 | * @sb: superblock of filesystem | |
1139 | * | |
1140 | */ | |
1141 | ||
1142 | void | |
1143 | v9fs_stat2inode_dotl(struct p9_stat_dotl *stat, struct inode *inode) | |
1144 | { | |
1145 | ||
1146 | if ((stat->st_result_mask & P9_STATS_BASIC) == P9_STATS_BASIC) { | |
1147 | inode->i_atime.tv_sec = stat->st_atime_sec; | |
1148 | inode->i_atime.tv_nsec = stat->st_atime_nsec; | |
1149 | inode->i_mtime.tv_sec = stat->st_mtime_sec; | |
1150 | inode->i_mtime.tv_nsec = stat->st_mtime_nsec; | |
1151 | inode->i_ctime.tv_sec = stat->st_ctime_sec; | |
1152 | inode->i_ctime.tv_nsec = stat->st_ctime_nsec; | |
1153 | inode->i_uid = stat->st_uid; | |
1154 | inode->i_gid = stat->st_gid; | |
1155 | inode->i_nlink = stat->st_nlink; | |
1156 | inode->i_mode = stat->st_mode; | |
1157 | inode->i_rdev = new_decode_dev(stat->st_rdev); | |
1158 | ||
1159 | if ((S_ISBLK(inode->i_mode)) || (S_ISCHR(inode->i_mode))) | |
1160 | init_special_inode(inode, inode->i_mode, inode->i_rdev); | |
1161 | ||
1162 | i_size_write(inode, stat->st_size); | |
1163 | inode->i_blocks = stat->st_blocks; | |
1164 | } else { | |
1165 | if (stat->st_result_mask & P9_STATS_ATIME) { | |
1166 | inode->i_atime.tv_sec = stat->st_atime_sec; | |
1167 | inode->i_atime.tv_nsec = stat->st_atime_nsec; | |
1168 | } | |
1169 | if (stat->st_result_mask & P9_STATS_MTIME) { | |
1170 | inode->i_mtime.tv_sec = stat->st_mtime_sec; | |
1171 | inode->i_mtime.tv_nsec = stat->st_mtime_nsec; | |
1172 | } | |
1173 | if (stat->st_result_mask & P9_STATS_CTIME) { | |
1174 | inode->i_ctime.tv_sec = stat->st_ctime_sec; | |
1175 | inode->i_ctime.tv_nsec = stat->st_ctime_nsec; | |
1176 | } | |
1177 | if (stat->st_result_mask & P9_STATS_UID) | |
1178 | inode->i_uid = stat->st_uid; | |
1179 | if (stat->st_result_mask & P9_STATS_GID) | |
1180 | inode->i_gid = stat->st_gid; | |
1181 | if (stat->st_result_mask & P9_STATS_NLINK) | |
1182 | inode->i_nlink = stat->st_nlink; | |
1183 | if (stat->st_result_mask & P9_STATS_MODE) { | |
1184 | inode->i_mode = stat->st_mode; | |
1185 | if ((S_ISBLK(inode->i_mode)) || | |
1186 | (S_ISCHR(inode->i_mode))) | |
1187 | init_special_inode(inode, inode->i_mode, | |
1188 | inode->i_rdev); | |
1189 | } | |
1190 | if (stat->st_result_mask & P9_STATS_RDEV) | |
1191 | inode->i_rdev = new_decode_dev(stat->st_rdev); | |
1192 | if (stat->st_result_mask & P9_STATS_SIZE) | |
1193 | i_size_write(inode, stat->st_size); | |
1194 | if (stat->st_result_mask & P9_STATS_BLOCKS) | |
1195 | inode->i_blocks = stat->st_blocks; | |
1196 | } | |
1197 | if (stat->st_result_mask & P9_STATS_GEN) | |
1198 | inode->i_generation = stat->st_gen; | |
1199 | ||
1200 | /* Currently we don't support P9_STATS_BTIME and P9_STATS_DATA_VERSION | |
1201 | * because the inode structure does not have fields for them. | |
1202 | */ | |
1203 | } | |
1204 | ||
2bad8471 EVH |
1205 | /** |
1206 | * v9fs_qid2ino - convert qid into inode number | |
1207 | * @qid: qid to hash | |
1208 | * | |
1209 | * BUG: potential for inode number collisions? | |
1210 | */ | |
1211 | ||
bd238fb4 | 1212 | ino_t v9fs_qid2ino(struct p9_qid *qid) |
2bad8471 EVH |
1213 | { |
1214 | u64 path = qid->path + 2; | |
1215 | ino_t i = 0; | |
1216 | ||
1217 | if (sizeof(ino_t) == sizeof(path)) | |
1218 | memcpy(&i, &path, sizeof(ino_t)); | |
1219 | else | |
1220 | i = (ino_t) (path ^ (path >> 32)); | |
1221 | ||
1222 | return i; | |
1223 | } | |
1224 | ||
2bad8471 EVH |
1225 | /** |
1226 | * v9fs_readlink - read a symlink's location (internal version) | |
1227 | * @dentry: dentry for symlink | |
73c592b9 | 1228 | * @buffer: buffer to load symlink location into |
2bad8471 EVH |
1229 | * @buflen: length of buffer |
1230 | * | |
1231 | */ | |
1232 | ||
1233 | static int v9fs_readlink(struct dentry *dentry, char *buffer, int buflen) | |
1234 | { | |
bd238fb4 | 1235 | int retval; |
2bad8471 | 1236 | |
bd238fb4 LI |
1237 | struct v9fs_session_info *v9ses; |
1238 | struct p9_fid *fid; | |
51a87c55 | 1239 | struct p9_wstat *st; |
2bad8471 | 1240 | |
bd238fb4 LI |
1241 | P9_DPRINTK(P9_DEBUG_VFS, " %s\n", dentry->d_name.name); |
1242 | retval = -EPERM; | |
1243 | v9ses = v9fs_inode2v9ses(dentry->d_inode); | |
1244 | fid = v9fs_fid_lookup(dentry); | |
ba17674f | 1245 | if (IS_ERR(fid)) |
da977b2c | 1246 | return PTR_ERR(fid); |
2bad8471 | 1247 | |
dd6102fb | 1248 | if (!v9fs_proto_dotu(v9ses)) |
bd238fb4 | 1249 | return -EBADF; |
2bad8471 | 1250 | |
bd238fb4 LI |
1251 | st = p9_client_stat(fid); |
1252 | if (IS_ERR(st)) | |
1253 | return PTR_ERR(st); | |
2bad8471 | 1254 | |
bd238fb4 | 1255 | if (!(st->mode & P9_DMSYMLINK)) { |
2bad8471 | 1256 | retval = -EINVAL; |
bd238fb4 | 1257 | goto done; |
2bad8471 EVH |
1258 | } |
1259 | ||
1260 | /* copy extension buffer into buffer */ | |
51a87c55 | 1261 | strncpy(buffer, st->extension, buflen); |
2bad8471 | 1262 | |
bd238fb4 | 1263 | P9_DPRINTK(P9_DEBUG_VFS, |
51a87c55 | 1264 | "%s -> %s (%s)\n", dentry->d_name.name, st->extension, buffer); |
2bad8471 | 1265 | |
2511cd0b | 1266 | retval = strnlen(buffer, buflen); |
bd238fb4 LI |
1267 | done: |
1268 | kfree(st); | |
2bad8471 EVH |
1269 | return retval; |
1270 | } | |
1271 | ||
2bad8471 EVH |
1272 | /** |
1273 | * v9fs_vfs_follow_link - follow a symlink path | |
1274 | * @dentry: dentry for symlink | |
1275 | * @nd: nameidata | |
1276 | * | |
1277 | */ | |
1278 | ||
1279 | static void *v9fs_vfs_follow_link(struct dentry *dentry, struct nameidata *nd) | |
1280 | { | |
1281 | int len = 0; | |
1282 | char *link = __getname(); | |
1283 | ||
bd238fb4 | 1284 | P9_DPRINTK(P9_DEBUG_VFS, "%s n", dentry->d_name.name); |
2bad8471 EVH |
1285 | |
1286 | if (!link) | |
1287 | link = ERR_PTR(-ENOMEM); | |
1288 | else { | |
16cce6d2 | 1289 | len = v9fs_readlink(dentry, link, PATH_MAX); |
2bad8471 EVH |
1290 | |
1291 | if (len < 0) { | |
ce44eeb6 | 1292 | __putname(link); |
2bad8471 EVH |
1293 | link = ERR_PTR(len); |
1294 | } else | |
2511cd0b | 1295 | link[min(len, PATH_MAX-1)] = 0; |
2bad8471 EVH |
1296 | } |
1297 | nd_set_link(nd, link); | |
1298 | ||
1299 | return NULL; | |
1300 | } | |
1301 | ||
1302 | /** | |
1303 | * v9fs_vfs_put_link - release a symlink path | |
1304 | * @dentry: dentry for symlink | |
1305 | * @nd: nameidata | |
ee443996 | 1306 | * @p: unused |
2bad8471 EVH |
1307 | * |
1308 | */ | |
1309 | ||
ee443996 EVH |
1310 | static void |
1311 | v9fs_vfs_put_link(struct dentry *dentry, struct nameidata *nd, void *p) | |
2bad8471 EVH |
1312 | { |
1313 | char *s = nd_get_link(nd); | |
1314 | ||
6ff23207 DG |
1315 | P9_DPRINTK(P9_DEBUG_VFS, " %s %s\n", dentry->d_name.name, |
1316 | IS_ERR(s) ? "<error>" : s); | |
2bad8471 | 1317 | if (!IS_ERR(s)) |
ce44eeb6 | 1318 | __putname(s); |
2bad8471 EVH |
1319 | } |
1320 | ||
ee443996 EVH |
1321 | /** |
1322 | * v9fs_vfs_mkspecial - create a special file | |
1323 | * @dir: inode to create special file in | |
1324 | * @dentry: dentry to create | |
1325 | * @mode: mode to create special file | |
1326 | * @extension: 9p2000.u format extension string representing special file | |
1327 | * | |
1328 | */ | |
1329 | ||
531b1094 LI |
1330 | static int v9fs_vfs_mkspecial(struct inode *dir, struct dentry *dentry, |
1331 | int mode, const char *extension) | |
2bad8471 | 1332 | { |
bd238fb4 | 1333 | u32 perm; |
531b1094 | 1334 | struct v9fs_session_info *v9ses; |
bd238fb4 | 1335 | struct p9_fid *fid; |
2bad8471 | 1336 | |
6a3124a3 | 1337 | v9ses = v9fs_inode2v9ses(dir); |
dd6102fb | 1338 | if (!v9fs_proto_dotu(v9ses)) { |
bd238fb4 | 1339 | P9_DPRINTK(P9_DEBUG_ERROR, "not extended\n"); |
6a3124a3 | 1340 | return -EPERM; |
2bad8471 EVH |
1341 | } |
1342 | ||
da977b2c | 1343 | perm = unixmode2p9mode(v9ses, mode); |
bd238fb4 LI |
1344 | fid = v9fs_create(v9ses, dir, dentry, (char *) extension, perm, |
1345 | P9_OREAD); | |
1346 | if (IS_ERR(fid)) | |
1347 | return PTR_ERR(fid); | |
da977b2c | 1348 | |
bd238fb4 | 1349 | p9_client_clunk(fid); |
6a3124a3 | 1350 | return 0; |
531b1094 LI |
1351 | } |
1352 | ||
1353 | /** | |
1354 | * v9fs_vfs_symlink - helper function to create symlinks | |
1355 | * @dir: directory inode containing symlink | |
1356 | * @dentry: dentry for symlink | |
1357 | * @symname: symlink data | |
1358 | * | |
ee443996 | 1359 | * See Also: 9P2000.u RFC for more information |
531b1094 LI |
1360 | * |
1361 | */ | |
1362 | ||
1363 | static int | |
1364 | v9fs_vfs_symlink(struct inode *dir, struct dentry *dentry, const char *symname) | |
1365 | { | |
bd238fb4 LI |
1366 | P9_DPRINTK(P9_DEBUG_VFS, " %lu,%s,%s\n", dir->i_ino, |
1367 | dentry->d_name.name, symname); | |
531b1094 LI |
1368 | |
1369 | return v9fs_vfs_mkspecial(dir, dentry, S_IFLNK, symname); | |
1370 | } | |
1371 | ||
1372 | /** | |
1373 | * v9fs_vfs_link - create a hardlink | |
1374 | * @old_dentry: dentry for file to link to | |
1375 | * @dir: inode destination for new link | |
1376 | * @dentry: dentry for link | |
1377 | * | |
1378 | */ | |
1379 | ||
531b1094 LI |
1380 | static int |
1381 | v9fs_vfs_link(struct dentry *old_dentry, struct inode *dir, | |
1382 | struct dentry *dentry) | |
1383 | { | |
1384 | int retval; | |
bd238fb4 | 1385 | struct p9_fid *oldfid; |
531b1094 LI |
1386 | char *name; |
1387 | ||
bd238fb4 LI |
1388 | P9_DPRINTK(P9_DEBUG_VFS, |
1389 | " %lu,%s,%s\n", dir->i_ino, dentry->d_name.name, | |
531b1094 LI |
1390 | old_dentry->d_name.name); |
1391 | ||
da977b2c | 1392 | oldfid = v9fs_fid_clone(old_dentry); |
ba17674f | 1393 | if (IS_ERR(oldfid)) |
da977b2c | 1394 | return PTR_ERR(oldfid); |
531b1094 LI |
1395 | |
1396 | name = __getname(); | |
da977b2c EVH |
1397 | if (unlikely(!name)) { |
1398 | retval = -ENOMEM; | |
1399 | goto clunk_fid; | |
1400 | } | |
0710d36a | 1401 | |
16cce6d2 | 1402 | sprintf(name, "%d\n", oldfid->fid); |
bd238fb4 | 1403 | retval = v9fs_vfs_mkspecial(dir, dentry, P9_DMLINK, name); |
531b1094 | 1404 | __putname(name); |
2bad8471 | 1405 | |
da977b2c | 1406 | clunk_fid: |
bd238fb4 | 1407 | p9_client_clunk(oldfid); |
2bad8471 EVH |
1408 | return retval; |
1409 | } | |
1410 | ||
09d34ee5 EVH |
1411 | /** |
1412 | * v9fs_vfs_link_dotl - create a hardlink for dotl | |
1413 | * @old_dentry: dentry for file to link to | |
1414 | * @dir: inode destination for new link | |
1415 | * @dentry: dentry for link | |
1416 | * | |
1417 | */ | |
1418 | ||
1419 | static int | |
1420 | v9fs_vfs_link_dotl(struct dentry *old_dentry, struct inode *dir, | |
1421 | struct dentry *dentry) | |
1422 | { | |
1423 | int err; | |
1424 | struct p9_fid *dfid, *oldfid; | |
1425 | char *name; | |
1426 | struct v9fs_session_info *v9ses; | |
1427 | struct dentry *dir_dentry; | |
1428 | ||
1429 | P9_DPRINTK(P9_DEBUG_VFS, "dir ino: %lu, old_name: %s, new_name: %s\n", | |
1430 | dir->i_ino, old_dentry->d_name.name, | |
1431 | dentry->d_name.name); | |
1432 | ||
1433 | v9ses = v9fs_inode2v9ses(dir); | |
1434 | dir_dentry = v9fs_dentry_from_dir_inode(dir); | |
1435 | dfid = v9fs_fid_lookup(dir_dentry); | |
1436 | if (IS_ERR(dfid)) | |
1437 | return PTR_ERR(dfid); | |
1438 | ||
1439 | oldfid = v9fs_fid_lookup(old_dentry); | |
1440 | if (IS_ERR(oldfid)) | |
1441 | return PTR_ERR(oldfid); | |
1442 | ||
1443 | name = (char *) dentry->d_name.name; | |
1444 | ||
1445 | err = p9_client_link(dfid, oldfid, (char *)dentry->d_name.name); | |
1446 | ||
1447 | if (err < 0) { | |
1448 | P9_DPRINTK(P9_DEBUG_VFS, "p9_client_link failed %d\n", err); | |
1449 | return err; | |
1450 | } | |
1451 | ||
1452 | if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) { | |
1453 | /* Get the latest stat info from server. */ | |
1454 | struct p9_fid *fid; | |
1455 | struct p9_stat_dotl *st; | |
1456 | ||
1457 | fid = v9fs_fid_lookup(old_dentry); | |
1458 | if (IS_ERR(fid)) | |
1459 | return PTR_ERR(fid); | |
1460 | ||
1461 | st = p9_client_getattr_dotl(fid, P9_STATS_BASIC); | |
1462 | if (IS_ERR(st)) | |
1463 | return PTR_ERR(st); | |
1464 | ||
1465 | v9fs_stat2inode_dotl(st, old_dentry->d_inode); | |
1466 | ||
1467 | kfree(st); | |
1468 | } else { | |
1469 | /* Caching disabled. No need to get upto date stat info. | |
1470 | * This dentry will be released immediately. So, just i_count++ | |
1471 | */ | |
1472 | atomic_inc(&old_dentry->d_inode->i_count); | |
1473 | } | |
1474 | ||
1475 | dentry->d_op = old_dentry->d_op; | |
1476 | d_instantiate(dentry, old_dentry->d_inode); | |
1477 | ||
1478 | return err; | |
1479 | } | |
1480 | ||
2bad8471 EVH |
1481 | /** |
1482 | * v9fs_vfs_mknod - create a special file | |
1483 | * @dir: inode destination for new link | |
1484 | * @dentry: dentry for file | |
1485 | * @mode: mode for creation | |
ee443996 | 1486 | * @rdev: device associated with special file |
2bad8471 EVH |
1487 | * |
1488 | */ | |
1489 | ||
1490 | static int | |
1491 | v9fs_vfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t rdev) | |
1492 | { | |
531b1094 LI |
1493 | int retval; |
1494 | char *name; | |
2bad8471 | 1495 | |
bd238fb4 LI |
1496 | P9_DPRINTK(P9_DEBUG_VFS, |
1497 | " %lu,%s mode: %x MAJOR: %u MINOR: %u\n", dir->i_ino, | |
2bad8471 EVH |
1498 | dentry->d_name.name, mode, MAJOR(rdev), MINOR(rdev)); |
1499 | ||
531b1094 LI |
1500 | if (!new_valid_dev(rdev)) |
1501 | return -EINVAL; | |
2bad8471 | 1502 | |
531b1094 | 1503 | name = __getname(); |
c0291a05 ET |
1504 | if (!name) |
1505 | return -ENOMEM; | |
2bad8471 EVH |
1506 | /* build extension */ |
1507 | if (S_ISBLK(mode)) | |
531b1094 | 1508 | sprintf(name, "b %u %u", MAJOR(rdev), MINOR(rdev)); |
2bad8471 | 1509 | else if (S_ISCHR(mode)) |
531b1094 | 1510 | sprintf(name, "c %u %u", MAJOR(rdev), MINOR(rdev)); |
73c592b9 | 1511 | else if (S_ISFIFO(mode)) |
531b1094 | 1512 | *name = 0; |
75cc5c9b VJ |
1513 | else if (S_ISSOCK(mode)) |
1514 | *name = 0; | |
2bad8471 | 1515 | else { |
531b1094 LI |
1516 | __putname(name); |
1517 | return -EINVAL; | |
2bad8471 EVH |
1518 | } |
1519 | ||
531b1094 LI |
1520 | retval = v9fs_vfs_mkspecial(dir, dentry, mode, name); |
1521 | __putname(name); | |
2bad8471 EVH |
1522 | |
1523 | return retval; | |
1524 | } | |
1525 | ||
9b6533c9 SK |
1526 | static const struct inode_operations v9fs_dir_inode_operations_dotu = { |
1527 | .create = v9fs_vfs_create, | |
1528 | .lookup = v9fs_vfs_lookup, | |
1529 | .symlink = v9fs_vfs_symlink, | |
09d34ee5 | 1530 | .link = v9fs_vfs_link_dotl, |
9b6533c9 SK |
1531 | .unlink = v9fs_vfs_unlink, |
1532 | .mkdir = v9fs_vfs_mkdir, | |
1533 | .rmdir = v9fs_vfs_rmdir, | |
1534 | .mknod = v9fs_vfs_mknod, | |
1535 | .rename = v9fs_vfs_rename, | |
1536 | .getattr = v9fs_vfs_getattr, | |
1537 | .setattr = v9fs_vfs_setattr, | |
1538 | }; | |
1539 | ||
1540 | static const struct inode_operations v9fs_dir_inode_operations_dotl = { | |
2bad8471 EVH |
1541 | .create = v9fs_vfs_create, |
1542 | .lookup = v9fs_vfs_lookup, | |
1543 | .symlink = v9fs_vfs_symlink, | |
1544 | .link = v9fs_vfs_link, | |
1545 | .unlink = v9fs_vfs_unlink, | |
1546 | .mkdir = v9fs_vfs_mkdir, | |
1547 | .rmdir = v9fs_vfs_rmdir, | |
1548 | .mknod = v9fs_vfs_mknod, | |
1549 | .rename = v9fs_vfs_rename, | |
f0853122 | 1550 | .getattr = v9fs_vfs_getattr_dotl, |
87d7845a | 1551 | .setattr = v9fs_vfs_setattr_dotl, |
2bad8471 EVH |
1552 | }; |
1553 | ||
754661f1 | 1554 | static const struct inode_operations v9fs_dir_inode_operations = { |
b501611a EVH |
1555 | .create = v9fs_vfs_create, |
1556 | .lookup = v9fs_vfs_lookup, | |
1557 | .unlink = v9fs_vfs_unlink, | |
1558 | .mkdir = v9fs_vfs_mkdir, | |
1559 | .rmdir = v9fs_vfs_rmdir, | |
1560 | .mknod = v9fs_vfs_mknod, | |
1561 | .rename = v9fs_vfs_rename, | |
1562 | .getattr = v9fs_vfs_getattr, | |
1563 | .setattr = v9fs_vfs_setattr, | |
1564 | }; | |
1565 | ||
754661f1 | 1566 | static const struct inode_operations v9fs_file_inode_operations = { |
2bad8471 EVH |
1567 | .getattr = v9fs_vfs_getattr, |
1568 | .setattr = v9fs_vfs_setattr, | |
1569 | }; | |
1570 | ||
9b6533c9 | 1571 | static const struct inode_operations v9fs_file_inode_operations_dotl = { |
f0853122 | 1572 | .getattr = v9fs_vfs_getattr_dotl, |
87d7845a | 1573 | .setattr = v9fs_vfs_setattr_dotl, |
9b6533c9 SK |
1574 | }; |
1575 | ||
754661f1 | 1576 | static const struct inode_operations v9fs_symlink_inode_operations = { |
204f2f0e | 1577 | .readlink = generic_readlink, |
2bad8471 EVH |
1578 | .follow_link = v9fs_vfs_follow_link, |
1579 | .put_link = v9fs_vfs_put_link, | |
1580 | .getattr = v9fs_vfs_getattr, | |
1581 | .setattr = v9fs_vfs_setattr, | |
1582 | }; | |
9b6533c9 SK |
1583 | |
1584 | static const struct inode_operations v9fs_symlink_inode_operations_dotl = { | |
1585 | .readlink = generic_readlink, | |
1586 | .follow_link = v9fs_vfs_follow_link, | |
1587 | .put_link = v9fs_vfs_put_link, | |
f0853122 | 1588 | .getattr = v9fs_vfs_getattr_dotl, |
87d7845a | 1589 | .setattr = v9fs_vfs_setattr_dotl, |
9b6533c9 | 1590 | }; |