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 | 51 | static const struct inode_operations v9fs_dir_inode_operations_dotu; |
754661f1 AV |
52 | static const struct inode_operations v9fs_file_inode_operations; |
53 | static const struct inode_operations v9fs_symlink_inode_operations; | |
f5fc6145 | 54 | |
2bad8471 EVH |
55 | /** |
56 | * unixmode2p9mode - convert unix mode bits to plan 9 | |
57 | * @v9ses: v9fs session information | |
58 | * @mode: mode to convert | |
59 | * | |
60 | */ | |
61 | ||
3eda0de6 | 62 | static u32 unixmode2p9mode(struct v9fs_session_info *v9ses, umode_t mode) |
2bad8471 EVH |
63 | { |
64 | int res; | |
65 | res = mode & 0777; | |
66 | if (S_ISDIR(mode)) | |
bd238fb4 | 67 | res |= P9_DMDIR; |
dd6102fb | 68 | if (v9fs_proto_dotu(v9ses)) { |
2bad8471 EVH |
69 | if (v9ses->nodev == 0) { |
70 | if (S_ISSOCK(mode)) | |
bd238fb4 | 71 | res |= P9_DMSOCKET; |
2bad8471 | 72 | if (S_ISFIFO(mode)) |
bd238fb4 | 73 | res |= P9_DMNAMEDPIPE; |
2bad8471 | 74 | if (S_ISBLK(mode)) |
bd238fb4 | 75 | res |= P9_DMDEVICE; |
2bad8471 | 76 | if (S_ISCHR(mode)) |
bd238fb4 | 77 | res |= P9_DMDEVICE; |
2bad8471 EVH |
78 | } |
79 | ||
80 | if ((mode & S_ISUID) == S_ISUID) | |
bd238fb4 | 81 | res |= P9_DMSETUID; |
2bad8471 | 82 | if ((mode & S_ISGID) == S_ISGID) |
bd238fb4 | 83 | res |= P9_DMSETGID; |
d199d652 AL |
84 | if ((mode & S_ISVTX) == S_ISVTX) |
85 | res |= P9_DMSETVTX; | |
2bad8471 | 86 | } |
2bad8471 EVH |
87 | return res; |
88 | } | |
89 | ||
90 | /** | |
91 | * p9mode2unixmode- convert plan9 mode bits to unix mode bits | |
92 | * @v9ses: v9fs session information | |
45089142 AK |
93 | * @stat: p9_wstat from which mode need to be derived |
94 | * @rdev: major number, minor number in case of device files. | |
2bad8471 EVH |
95 | * |
96 | */ | |
3eda0de6 AV |
97 | static umode_t p9mode2unixmode(struct v9fs_session_info *v9ses, |
98 | struct p9_wstat *stat, dev_t *rdev) | |
2bad8471 EVH |
99 | { |
100 | int res; | |
3eda0de6 | 101 | u32 mode = stat->mode; |
2bad8471 | 102 | |
45089142 AK |
103 | res = mode & S_IALLUGO; |
104 | *rdev = 0; | |
2bad8471 | 105 | |
bd238fb4 | 106 | if ((mode & P9_DMDIR) == P9_DMDIR) |
2bad8471 | 107 | res |= S_IFDIR; |
dd6102fb | 108 | else if ((mode & P9_DMSYMLINK) && (v9fs_proto_dotu(v9ses))) |
2bad8471 | 109 | res |= S_IFLNK; |
dd6102fb | 110 | else if ((mode & P9_DMSOCKET) && (v9fs_proto_dotu(v9ses)) |
2bad8471 EVH |
111 | && (v9ses->nodev == 0)) |
112 | res |= S_IFSOCK; | |
dd6102fb | 113 | else if ((mode & P9_DMNAMEDPIPE) && (v9fs_proto_dotu(v9ses)) |
2bad8471 EVH |
114 | && (v9ses->nodev == 0)) |
115 | res |= S_IFIFO; | |
dd6102fb | 116 | else if ((mode & P9_DMDEVICE) && (v9fs_proto_dotu(v9ses)) |
45089142 AK |
117 | && (v9ses->nodev == 0)) { |
118 | char type = 0, ext[32]; | |
119 | int major = -1, minor = -1; | |
120 | ||
121 | strncpy(ext, stat->extension, sizeof(ext)); | |
122 | sscanf(ext, "%c %u %u", &type, &major, &minor); | |
123 | switch (type) { | |
124 | case 'c': | |
125 | res |= S_IFCHR; | |
126 | break; | |
127 | case 'b': | |
128 | res |= S_IFBLK; | |
129 | break; | |
130 | default: | |
131 | P9_DPRINTK(P9_DEBUG_ERROR, | |
132 | "Unknown special type %c %s\n", type, | |
133 | stat->extension); | |
134 | }; | |
135 | *rdev = MKDEV(major, minor); | |
136 | } else | |
2bad8471 EVH |
137 | res |= S_IFREG; |
138 | ||
dd6102fb | 139 | if (v9fs_proto_dotu(v9ses)) { |
bd238fb4 | 140 | if ((mode & P9_DMSETUID) == P9_DMSETUID) |
2bad8471 EVH |
141 | res |= S_ISUID; |
142 | ||
bd238fb4 | 143 | if ((mode & P9_DMSETGID) == P9_DMSETGID) |
2bad8471 | 144 | res |= S_ISGID; |
d199d652 AL |
145 | |
146 | if ((mode & P9_DMSETVTX) == P9_DMSETVTX) | |
147 | res |= S_ISVTX; | |
2bad8471 | 148 | } |
2bad8471 EVH |
149 | return res; |
150 | } | |
151 | ||
ee443996 EVH |
152 | /** |
153 | * v9fs_uflags2omode- convert posix open flags to plan 9 mode bits | |
154 | * @uflags: flags to convert | |
2e4bef41 | 155 | * @extended: if .u extensions are active |
ee443996 EVH |
156 | */ |
157 | ||
2e4bef41 | 158 | int v9fs_uflags2omode(int uflags, int extended) |
6a3124a3 LI |
159 | { |
160 | int ret; | |
161 | ||
162 | ret = 0; | |
163 | switch (uflags&3) { | |
164 | default: | |
165 | case O_RDONLY: | |
bd238fb4 | 166 | ret = P9_OREAD; |
6a3124a3 LI |
167 | break; |
168 | ||
169 | case O_WRONLY: | |
bd238fb4 | 170 | ret = P9_OWRITE; |
6a3124a3 LI |
171 | break; |
172 | ||
173 | case O_RDWR: | |
bd238fb4 | 174 | ret = P9_ORDWR; |
6a3124a3 LI |
175 | break; |
176 | } | |
177 | ||
6a3124a3 | 178 | if (uflags & O_TRUNC) |
bd238fb4 | 179 | ret |= P9_OTRUNC; |
6a3124a3 | 180 | |
2e4bef41 EVH |
181 | if (extended) { |
182 | if (uflags & O_EXCL) | |
183 | ret |= P9_OEXCL; | |
184 | ||
185 | if (uflags & O_APPEND) | |
186 | ret |= P9_OAPPEND; | |
187 | } | |
6a3124a3 LI |
188 | |
189 | return ret; | |
190 | } | |
191 | ||
2bad8471 | 192 | /** |
531b1094 | 193 | * v9fs_blank_wstat - helper function to setup a 9P stat structure |
531b1094 | 194 | * @wstat: structure to initialize |
2bad8471 EVH |
195 | * |
196 | */ | |
197 | ||
7a4439c4 | 198 | void |
bd238fb4 | 199 | v9fs_blank_wstat(struct p9_wstat *wstat) |
2bad8471 | 200 | { |
531b1094 LI |
201 | wstat->type = ~0; |
202 | wstat->dev = ~0; | |
203 | wstat->qid.type = ~0; | |
204 | wstat->qid.version = ~0; | |
205 | *((long long *)&wstat->qid.path) = ~0; | |
206 | wstat->mode = ~0; | |
207 | wstat->atime = ~0; | |
208 | wstat->mtime = ~0; | |
209 | wstat->length = ~0; | |
210 | wstat->name = NULL; | |
211 | wstat->uid = NULL; | |
212 | wstat->gid = NULL; | |
213 | wstat->muid = NULL; | |
214 | wstat->n_uid = ~0; | |
215 | wstat->n_gid = ~0; | |
216 | wstat->n_muid = ~0; | |
217 | wstat->extension = NULL; | |
2bad8471 EVH |
218 | } |
219 | ||
60e78d2c AK |
220 | /** |
221 | * v9fs_alloc_inode - helper function to allocate an inode | |
60e78d2c AK |
222 | * |
223 | */ | |
60e78d2c AK |
224 | struct inode *v9fs_alloc_inode(struct super_block *sb) |
225 | { | |
a78ce05d AK |
226 | struct v9fs_inode *v9inode; |
227 | v9inode = (struct v9fs_inode *)kmem_cache_alloc(v9fs_inode_cache, | |
228 | GFP_KERNEL); | |
229 | if (!v9inode) | |
60e78d2c | 230 | return NULL; |
a78ce05d AK |
231 | #ifdef CONFIG_9P_FSCACHE |
232 | v9inode->fscache = NULL; | |
a78ce05d AK |
233 | spin_lock_init(&v9inode->fscache_lock); |
234 | #endif | |
6b39f6d2 | 235 | v9inode->writeback_fid = NULL; |
b3cbea03 | 236 | v9inode->cache_validity = 0; |
5a7e0a8c | 237 | mutex_init(&v9inode->v_mutex); |
a78ce05d | 238 | return &v9inode->vfs_inode; |
60e78d2c AK |
239 | } |
240 | ||
241 | /** | |
242 | * v9fs_destroy_inode - destroy an inode | |
243 | * | |
244 | */ | |
245 | ||
fa0d7e3d | 246 | static void v9fs_i_callback(struct rcu_head *head) |
60e78d2c | 247 | { |
fa0d7e3d | 248 | struct inode *inode = container_of(head, struct inode, i_rcu); |
a78ce05d | 249 | kmem_cache_free(v9fs_inode_cache, V9FS_I(inode)); |
60e78d2c | 250 | } |
fa0d7e3d NP |
251 | |
252 | void v9fs_destroy_inode(struct inode *inode) | |
253 | { | |
254 | call_rcu(&inode->i_rcu, v9fs_i_callback); | |
255 | } | |
60e78d2c | 256 | |
5ffc0cb3 | 257 | int v9fs_init_inode(struct v9fs_session_info *v9ses, |
3eda0de6 | 258 | struct inode *inode, umode_t mode, dev_t rdev) |
2bad8471 | 259 | { |
5ffc0cb3 | 260 | int err = 0; |
2bb54115 | 261 | |
217f206d | 262 | inode_init_owner(inode, NULL, mode); |
2bb54115 | 263 | inode->i_blocks = 0; |
45089142 | 264 | inode->i_rdev = rdev; |
2bb54115 AK |
265 | inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME; |
266 | inode->i_mapping->a_ops = &v9fs_addr_operations; | |
267 | ||
268 | switch (mode & S_IFMT) { | |
269 | case S_IFIFO: | |
270 | case S_IFBLK: | |
271 | case S_IFCHR: | |
272 | case S_IFSOCK: | |
4b43516a MK |
273 | if (v9fs_proto_dotl(v9ses)) { |
274 | inode->i_op = &v9fs_file_inode_operations_dotl; | |
4b43516a MK |
275 | } else if (v9fs_proto_dotu(v9ses)) { |
276 | inode->i_op = &v9fs_file_inode_operations; | |
4b43516a | 277 | } else { |
bd238fb4 | 278 | P9_DPRINTK(P9_DEBUG_ERROR, |
2bb54115 AK |
279 | "special files without extended mode\n"); |
280 | err = -EINVAL; | |
281 | goto error; | |
2bad8471 | 282 | } |
2bb54115 AK |
283 | init_special_inode(inode, inode->i_mode, inode->i_rdev); |
284 | break; | |
285 | case S_IFREG: | |
9b6533c9 SK |
286 | if (v9fs_proto_dotl(v9ses)) { |
287 | inode->i_op = &v9fs_file_inode_operations_dotl; | |
29236f4e AK |
288 | if (v9ses->cache) |
289 | inode->i_fop = | |
290 | &v9fs_cached_file_operations_dotl; | |
291 | else | |
292 | inode->i_fop = &v9fs_file_operations_dotl; | |
9b6533c9 SK |
293 | } else { |
294 | inode->i_op = &v9fs_file_inode_operations; | |
29236f4e AK |
295 | if (v9ses->cache) |
296 | inode->i_fop = &v9fs_cached_file_operations; | |
297 | else | |
298 | inode->i_fop = &v9fs_file_operations; | |
9b6533c9 SK |
299 | } |
300 | ||
2bb54115 AK |
301 | break; |
302 | case S_IFLNK: | |
9b6533c9 SK |
303 | if (!v9fs_proto_dotu(v9ses) && !v9fs_proto_dotl(v9ses)) { |
304 | P9_DPRINTK(P9_DEBUG_ERROR, "extended modes used with " | |
305 | "legacy protocol.\n"); | |
2bb54115 AK |
306 | err = -EINVAL; |
307 | goto error; | |
308 | } | |
9b6533c9 SK |
309 | |
310 | if (v9fs_proto_dotl(v9ses)) | |
311 | inode->i_op = &v9fs_symlink_inode_operations_dotl; | |
312 | else | |
313 | inode->i_op = &v9fs_symlink_inode_operations; | |
314 | ||
2bb54115 AK |
315 | break; |
316 | case S_IFDIR: | |
317 | inc_nlink(inode); | |
9b6533c9 SK |
318 | if (v9fs_proto_dotl(v9ses)) |
319 | inode->i_op = &v9fs_dir_inode_operations_dotl; | |
320 | else if (v9fs_proto_dotu(v9ses)) | |
321 | inode->i_op = &v9fs_dir_inode_operations_dotu; | |
2bb54115 AK |
322 | else |
323 | inode->i_op = &v9fs_dir_inode_operations; | |
9b6533c9 SK |
324 | |
325 | if (v9fs_proto_dotl(v9ses)) | |
326 | inode->i_fop = &v9fs_dir_operations_dotl; | |
327 | else | |
328 | inode->i_fop = &v9fs_dir_operations; | |
329 | ||
2bb54115 AK |
330 | break; |
331 | default: | |
3eda0de6 | 332 | P9_DPRINTK(P9_DEBUG_ERROR, "BAD mode 0x%hx S_IFMT 0x%x\n", |
2bb54115 AK |
333 | mode, mode & S_IFMT); |
334 | err = -EINVAL; | |
335 | goto error; | |
2bad8471 | 336 | } |
5ffc0cb3 AK |
337 | error: |
338 | return err; | |
2bb54115 | 339 | |
5ffc0cb3 | 340 | } |
2bb54115 | 341 | |
5ffc0cb3 AK |
342 | /** |
343 | * v9fs_get_inode - helper function to setup an inode | |
344 | * @sb: superblock | |
345 | * @mode: mode to setup inode with | |
346 | * | |
347 | */ | |
348 | ||
3eda0de6 | 349 | struct inode *v9fs_get_inode(struct super_block *sb, umode_t mode, dev_t rdev) |
5ffc0cb3 AK |
350 | { |
351 | int err; | |
352 | struct inode *inode; | |
353 | struct v9fs_session_info *v9ses = sb->s_fs_info; | |
354 | ||
3eda0de6 | 355 | P9_DPRINTK(P9_DEBUG_VFS, "super block: %p mode: %ho\n", sb, mode); |
5ffc0cb3 AK |
356 | |
357 | inode = new_inode(sb); | |
358 | if (!inode) { | |
359 | P9_EPRINTK(KERN_WARNING, "Problem allocating inode\n"); | |
360 | return ERR_PTR(-ENOMEM); | |
361 | } | |
45089142 | 362 | err = v9fs_init_inode(v9ses, inode, mode, rdev); |
5ffc0cb3 AK |
363 | if (err) { |
364 | iput(inode); | |
365 | return ERR_PTR(err); | |
366 | } | |
367 | return inode; | |
2bad8471 EVH |
368 | } |
369 | ||
bd238fb4 | 370 | /* |
6a3124a3 LI |
371 | static struct v9fs_fid* |
372 | v9fs_clone_walk(struct v9fs_session_info *v9ses, u32 fid, struct dentry *dentry) | |
373 | { | |
374 | int err; | |
736c4b85 | 375 | int nfid; |
6a3124a3 LI |
376 | struct v9fs_fid *ret; |
377 | struct v9fs_fcall *fcall; | |
378 | ||
379 | nfid = v9fs_get_idpool(&v9ses->fidpool); | |
380 | if (nfid < 0) { | |
0b8dd177 | 381 | eprintk(KERN_WARNING, "no free fids available\n"); |
731805b4 | 382 | return ERR_PTR(-ENOSPC); |
0b8dd177 LI |
383 | } |
384 | ||
6a3124a3 LI |
385 | err = v9fs_t_walk(v9ses, fid, nfid, (char *) dentry->d_name.name, |
386 | &fcall); | |
387 | ||
388 | if (err < 0) { | |
41e5a6ac LI |
389 | if (fcall && fcall->id == RWALK) |
390 | goto clunk_fid; | |
391 | ||
6a3124a3 LI |
392 | PRINT_FCALL_ERROR("walk error", fcall); |
393 | v9fs_put_idpool(nfid, &v9ses->fidpool); | |
394 | goto error; | |
0b8dd177 | 395 | } |
6a3124a3 | 396 | |
3cf6429a LI |
397 | kfree(fcall); |
398 | fcall = NULL; | |
6a3124a3 LI |
399 | ret = v9fs_fid_create(v9ses, nfid); |
400 | if (!ret) { | |
401 | err = -ENOMEM; | |
402 | goto clunk_fid; | |
403 | } | |
0b8dd177 | 404 | |
6a3124a3 LI |
405 | err = v9fs_fid_insert(ret, dentry); |
406 | if (err < 0) { | |
407 | v9fs_fid_destroy(ret); | |
408 | goto clunk_fid; | |
0b8dd177 | 409 | } |
2bad8471 | 410 | |
6a3124a3 | 411 | return ret; |
2bad8471 | 412 | |
6a3124a3 LI |
413 | clunk_fid: |
414 | v9fs_t_clunk(v9ses, nfid); | |
2bad8471 | 415 | |
6a3124a3 LI |
416 | error: |
417 | kfree(fcall); | |
418 | return ERR_PTR(err); | |
419 | } | |
bd238fb4 | 420 | */ |
2bad8471 | 421 | |
60e78d2c AK |
422 | |
423 | /** | |
424 | * v9fs_clear_inode - release an inode | |
425 | * @inode: inode to release | |
426 | * | |
427 | */ | |
b57922d9 | 428 | void v9fs_evict_inode(struct inode *inode) |
60e78d2c | 429 | { |
6b39f6d2 AK |
430 | struct v9fs_inode *v9inode = V9FS_I(inode); |
431 | ||
b57922d9 AV |
432 | truncate_inode_pages(inode->i_mapping, 0); |
433 | end_writeback(inode); | |
60e78d2c AK |
434 | filemap_fdatawrite(inode->i_mapping); |
435 | ||
436 | #ifdef CONFIG_9P_FSCACHE | |
437 | v9fs_cache_inode_put_cookie(inode); | |
438 | #endif | |
6b39f6d2 AK |
439 | /* clunk the fid stashed in writeback_fid */ |
440 | if (v9inode->writeback_fid) { | |
441 | p9_client_clunk(v9inode->writeback_fid); | |
442 | v9inode->writeback_fid = NULL; | |
3cf387d7 | 443 | } |
60e78d2c AK |
444 | } |
445 | ||
fd2421f5 AK |
446 | static int v9fs_test_inode(struct inode *inode, void *data) |
447 | { | |
448 | int umode; | |
45089142 | 449 | dev_t rdev; |
fd2421f5 AK |
450 | struct v9fs_inode *v9inode = V9FS_I(inode); |
451 | struct p9_wstat *st = (struct p9_wstat *)data; | |
452 | struct v9fs_session_info *v9ses = v9fs_inode2v9ses(inode); | |
453 | ||
45089142 | 454 | umode = p9mode2unixmode(v9ses, st, &rdev); |
fd2421f5 AK |
455 | /* don't match inode of different type */ |
456 | if ((inode->i_mode & S_IFMT) != (umode & S_IFMT)) | |
457 | return 0; | |
458 | ||
459 | /* compare qid details */ | |
460 | if (memcmp(&v9inode->qid.version, | |
461 | &st->qid.version, sizeof(v9inode->qid.version))) | |
462 | return 0; | |
463 | ||
464 | if (v9inode->qid.type != st->qid.type) | |
465 | return 0; | |
466 | return 1; | |
467 | } | |
468 | ||
ed80fcfa AK |
469 | static int v9fs_test_new_inode(struct inode *inode, void *data) |
470 | { | |
471 | return 0; | |
472 | } | |
473 | ||
fd2421f5 AK |
474 | static int v9fs_set_inode(struct inode *inode, void *data) |
475 | { | |
476 | struct v9fs_inode *v9inode = V9FS_I(inode); | |
477 | struct p9_wstat *st = (struct p9_wstat *)data; | |
478 | ||
479 | memcpy(&v9inode->qid, &st->qid, sizeof(st->qid)); | |
480 | return 0; | |
481 | } | |
482 | ||
5ffc0cb3 AK |
483 | static struct inode *v9fs_qid_iget(struct super_block *sb, |
484 | struct p9_qid *qid, | |
ed80fcfa AK |
485 | struct p9_wstat *st, |
486 | int new) | |
6a3124a3 | 487 | { |
45089142 | 488 | dev_t rdev; |
3eda0de6 AV |
489 | int retval; |
490 | umode_t umode; | |
5ffc0cb3 AK |
491 | unsigned long i_ino; |
492 | struct inode *inode; | |
493 | struct v9fs_session_info *v9ses = sb->s_fs_info; | |
ed80fcfa AK |
494 | int (*test)(struct inode *, void *); |
495 | ||
496 | if (new) | |
497 | test = v9fs_test_new_inode; | |
498 | else | |
499 | test = v9fs_test_inode; | |
2bad8471 | 500 | |
5ffc0cb3 | 501 | i_ino = v9fs_qid2ino(qid); |
ed80fcfa | 502 | inode = iget5_locked(sb, i_ino, test, v9fs_set_inode, st); |
5ffc0cb3 AK |
503 | if (!inode) |
504 | return ERR_PTR(-ENOMEM); | |
505 | if (!(inode->i_state & I_NEW)) | |
506 | return inode; | |
507 | /* | |
508 | * initialize the inode with the stat info | |
509 | * FIXME!! we may need support for stale inodes | |
510 | * later. | |
511 | */ | |
fd2421f5 | 512 | inode->i_ino = i_ino; |
45089142 AK |
513 | umode = p9mode2unixmode(v9ses, st, &rdev); |
514 | retval = v9fs_init_inode(v9ses, inode, umode, rdev); | |
5ffc0cb3 | 515 | if (retval) |
6a3124a3 | 516 | goto error; |
60e78d2c | 517 | |
5ffc0cb3 | 518 | v9fs_stat2inode(st, inode, sb); |
60e78d2c | 519 | #ifdef CONFIG_9P_FSCACHE |
5ffc0cb3 | 520 | v9fs_cache_inode_get_cookie(inode); |
60e78d2c | 521 | #endif |
5ffc0cb3 AK |
522 | unlock_new_inode(inode); |
523 | return inode; | |
6a3124a3 | 524 | error: |
5ffc0cb3 AK |
525 | unlock_new_inode(inode); |
526 | iput(inode); | |
527 | return ERR_PTR(retval); | |
528 | ||
529 | } | |
530 | ||
531 | struct inode * | |
a78ce05d | 532 | v9fs_inode_from_fid(struct v9fs_session_info *v9ses, struct p9_fid *fid, |
ed80fcfa | 533 | struct super_block *sb, int new) |
5ffc0cb3 AK |
534 | { |
535 | struct p9_wstat *st; | |
536 | struct inode *inode = NULL; | |
537 | ||
538 | st = p9_client_stat(fid); | |
539 | if (IS_ERR(st)) | |
540 | return ERR_CAST(st); | |
541 | ||
ed80fcfa | 542 | inode = v9fs_qid_iget(sb, &st->qid, st, new); |
02bc3567 | 543 | p9stat_free(st); |
bd238fb4 | 544 | kfree(st); |
5ffc0cb3 | 545 | return inode; |
2bad8471 EVH |
546 | } |
547 | ||
f88657ce AK |
548 | /** |
549 | * v9fs_at_to_dotl_flags- convert Linux specific AT flags to | |
550 | * plan 9 AT flag. | |
551 | * @flags: flags to convert | |
552 | */ | |
553 | static int v9fs_at_to_dotl_flags(int flags) | |
554 | { | |
555 | int rflags = 0; | |
556 | if (flags & AT_REMOVEDIR) | |
557 | rflags |= P9_DOTL_AT_REMOVEDIR; | |
558 | return rflags; | |
559 | } | |
560 | ||
2bad8471 EVH |
561 | /** |
562 | * v9fs_remove - helper function to remove files and directories | |
73c592b9 | 563 | * @dir: directory inode that is being deleted |
48e370ff | 564 | * @dentry: dentry that is being deleted |
73c592b9 | 565 | * @rmdir: removing a directory |
2bad8471 EVH |
566 | * |
567 | */ | |
568 | ||
48e370ff | 569 | static int v9fs_remove(struct inode *dir, struct dentry *dentry, int flags) |
2bad8471 | 570 | { |
48e370ff AK |
571 | struct inode *inode; |
572 | int retval = -EOPNOTSUPP; | |
573 | struct p9_fid *v9fid, *dfid; | |
574 | struct v9fs_session_info *v9ses; | |
2bad8471 | 575 | |
48e370ff AK |
576 | P9_DPRINTK(P9_DEBUG_VFS, "inode: %p dentry: %p rmdir: %x\n", |
577 | dir, dentry, flags); | |
2bad8471 | 578 | |
48e370ff AK |
579 | v9ses = v9fs_inode2v9ses(dir); |
580 | inode = dentry->d_inode; | |
581 | dfid = v9fs_fid_lookup(dentry->d_parent); | |
582 | if (IS_ERR(dfid)) { | |
583 | retval = PTR_ERR(dfid); | |
584 | P9_DPRINTK(P9_DEBUG_VFS, "fid lookup failed %d\n", retval); | |
585 | return retval; | |
586 | } | |
587 | if (v9fs_proto_dotl(v9ses)) | |
f88657ce AK |
588 | retval = p9_client_unlinkat(dfid, dentry->d_name.name, |
589 | v9fs_at_to_dotl_flags(flags)); | |
48e370ff AK |
590 | if (retval == -EOPNOTSUPP) { |
591 | /* Try the one based on path */ | |
592 | v9fid = v9fs_fid_clone(dentry); | |
593 | if (IS_ERR(v9fid)) | |
594 | return PTR_ERR(v9fid); | |
595 | retval = p9_client_remove(v9fid); | |
596 | } | |
b271ec47 AK |
597 | if (!retval) { |
598 | /* | |
599 | * directories on unlink should have zero | |
600 | * link count | |
601 | */ | |
48e370ff AK |
602 | if (flags & AT_REMOVEDIR) { |
603 | clear_nlink(inode); | |
b271ec47 AK |
604 | drop_nlink(dir); |
605 | } else | |
48e370ff | 606 | drop_nlink(inode); |
d28c61f0 | 607 | |
48e370ff | 608 | v9fs_invalidate_inode_attr(inode); |
d28c61f0 | 609 | v9fs_invalidate_inode_attr(dir); |
b271ec47 | 610 | } |
d994f405 | 611 | return retval; |
2bad8471 EVH |
612 | } |
613 | ||
614 | /** | |
bd238fb4 | 615 | * v9fs_create - Create a file |
ee443996 EVH |
616 | * @v9ses: session information |
617 | * @dir: directory that dentry is being created in | |
bd238fb4 | 618 | * @dentry: dentry that is being created |
0e15597e | 619 | * @extension: 9p2000.u extension string to support devices, etc. |
bd238fb4 LI |
620 | * @perm: create permissions |
621 | * @mode: open mode | |
2bad8471 EVH |
622 | * |
623 | */ | |
bd238fb4 LI |
624 | static struct p9_fid * |
625 | v9fs_create(struct v9fs_session_info *v9ses, struct inode *dir, | |
626 | struct dentry *dentry, char *extension, u32 perm, u8 mode) | |
2bad8471 | 627 | { |
6a3124a3 | 628 | int err; |
bd238fb4 LI |
629 | char *name; |
630 | struct p9_fid *dfid, *ofid, *fid; | |
6a3124a3 | 631 | struct inode *inode; |
6a3124a3 | 632 | |
51a87c55 EVH |
633 | P9_DPRINTK(P9_DEBUG_VFS, "name %s\n", dentry->d_name.name); |
634 | ||
bd238fb4 LI |
635 | err = 0; |
636 | ofid = NULL; | |
637 | fid = NULL; | |
638 | name = (char *) dentry->d_name.name; | |
6d27e64d | 639 | dfid = v9fs_fid_lookup(dentry->d_parent); |
ba17674f | 640 | if (IS_ERR(dfid)) { |
da977b2c | 641 | err = PTR_ERR(dfid); |
6d27e64d VJ |
642 | P9_DPRINTK(P9_DEBUG_VFS, "fid lookup failed %d\n", err); |
643 | return ERR_PTR(err); | |
da977b2c | 644 | } |
6a3124a3 | 645 | |
bd238fb4 LI |
646 | /* clone a fid to use for creation */ |
647 | ofid = p9_client_walk(dfid, 0, NULL, 1); | |
648 | if (IS_ERR(ofid)) { | |
649 | err = PTR_ERR(ofid); | |
51a87c55 | 650 | P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err); |
6d27e64d | 651 | return ERR_PTR(err); |
bd238fb4 | 652 | } |
6a3124a3 | 653 | |
bd238fb4 | 654 | err = p9_client_fcreate(ofid, name, perm, mode, extension); |
51a87c55 EVH |
655 | if (err < 0) { |
656 | P9_DPRINTK(P9_DEBUG_VFS, "p9_client_fcreate failed %d\n", err); | |
bd238fb4 | 657 | goto error; |
51a87c55 | 658 | } |
6a3124a3 | 659 | |
bd238fb4 | 660 | /* now walk from the parent so we can get unopened fid */ |
6d27e64d | 661 | fid = p9_client_walk(dfid, 1, &name, 1); |
bd238fb4 LI |
662 | if (IS_ERR(fid)) { |
663 | err = PTR_ERR(fid); | |
51a87c55 | 664 | P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err); |
bd238fb4 | 665 | fid = NULL; |
6a3124a3 | 666 | goto error; |
6d27e64d | 667 | } |
6a3124a3 | 668 | |
bd238fb4 | 669 | /* instantiate inode and assign the unopened fid to the dentry */ |
ed80fcfa | 670 | inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb); |
6a3124a3 LI |
671 | if (IS_ERR(inode)) { |
672 | err = PTR_ERR(inode); | |
51a87c55 | 673 | P9_DPRINTK(P9_DEBUG_VFS, "inode creation failed %d\n", err); |
6a3124a3 LI |
674 | goto error; |
675 | } | |
50fb6d2b AK |
676 | err = v9fs_fid_add(dentry, fid); |
677 | if (err < 0) | |
678 | goto error; | |
5441ae5e | 679 | d_instantiate(dentry, inode); |
bd238fb4 | 680 | return ofid; |
bd238fb4 | 681 | error: |
bd238fb4 LI |
682 | if (ofid) |
683 | p9_client_clunk(ofid); | |
684 | ||
685 | if (fid) | |
686 | p9_client_clunk(fid); | |
687 | ||
688 | return ERR_PTR(err); | |
689 | } | |
690 | ||
691 | /** | |
692 | * v9fs_vfs_create - VFS hook to create files | |
ee443996 | 693 | * @dir: directory inode that is being created |
bd238fb4 LI |
694 | * @dentry: dentry that is being deleted |
695 | * @mode: create permissions | |
696 | * @nd: path information | |
697 | * | |
698 | */ | |
6a3124a3 | 699 | |
bd238fb4 | 700 | static int |
4acdaf27 | 701 | v9fs_vfs_create(struct inode *dir, struct dentry *dentry, umode_t mode, |
bd238fb4 LI |
702 | struct nameidata *nd) |
703 | { | |
704 | int err; | |
705 | u32 perm; | |
706 | int flags; | |
6b39f6d2 AK |
707 | struct file *filp; |
708 | struct v9fs_inode *v9inode; | |
bd238fb4 | 709 | struct v9fs_session_info *v9ses; |
3cf387d7 | 710 | struct p9_fid *fid, *inode_fid; |
bd238fb4 LI |
711 | |
712 | err = 0; | |
713 | fid = NULL; | |
714 | v9ses = v9fs_inode2v9ses(dir); | |
715 | perm = unixmode2p9mode(v9ses, mode); | |
dd7dd556 | 716 | if (nd) |
8a5e929d | 717 | flags = nd->intent.open.flags; |
bd238fb4 LI |
718 | else |
719 | flags = O_RDWR; | |
720 | ||
721 | fid = v9fs_create(v9ses, dir, dentry, NULL, perm, | |
dd6102fb SK |
722 | v9fs_uflags2omode(flags, |
723 | v9fs_proto_dotu(v9ses))); | |
bd238fb4 LI |
724 | if (IS_ERR(fid)) { |
725 | err = PTR_ERR(fid); | |
726 | fid = NULL; | |
727 | goto error; | |
728 | } | |
729 | ||
d28c61f0 | 730 | v9fs_invalidate_inode_attr(dir); |
bd238fb4 | 731 | /* if we are opening a file, assign the open fid to the file */ |
dd7dd556 | 732 | if (nd) { |
6b39f6d2 | 733 | v9inode = V9FS_I(dentry->d_inode); |
5a7e0a8c | 734 | mutex_lock(&v9inode->v_mutex); |
7add697a AK |
735 | if (v9ses->cache && !v9inode->writeback_fid && |
736 | ((flags & O_ACCMODE) != O_RDONLY)) { | |
3cf387d7 | 737 | /* |
6b39f6d2 | 738 | * clone a fid and add it to writeback_fid |
3cf387d7 AK |
739 | * we do it during open time instead of |
740 | * page dirty time via write_begin/page_mkwrite | |
741 | * because we want write after unlink usecase | |
742 | * to work. | |
743 | */ | |
744 | inode_fid = v9fs_writeback_fid(dentry); | |
745 | if (IS_ERR(inode_fid)) { | |
746 | err = PTR_ERR(inode_fid); | |
5a7e0a8c | 747 | mutex_unlock(&v9inode->v_mutex); |
3cf387d7 AK |
748 | goto error; |
749 | } | |
6b39f6d2 | 750 | v9inode->writeback_fid = (void *) inode_fid; |
3cf387d7 | 751 | } |
5a7e0a8c | 752 | mutex_unlock(&v9inode->v_mutex); |
877cb3d4 | 753 | filp = lookup_instantiate_filp(nd, dentry, generic_file_open); |
6a3124a3 | 754 | if (IS_ERR(filp)) { |
bd238fb4 LI |
755 | err = PTR_ERR(filp); |
756 | goto error; | |
6a3124a3 LI |
757 | } |
758 | ||
bd238fb4 | 759 | filp->private_data = fid; |
46848de0 AK |
760 | #ifdef CONFIG_9P_FSCACHE |
761 | if (v9ses->cache) | |
762 | v9fs_cache_inode_set_cookie(dentry->d_inode, filp); | |
763 | #endif | |
bd238fb4 LI |
764 | } else |
765 | p9_client_clunk(fid); | |
6a3124a3 LI |
766 | |
767 | return 0; | |
768 | ||
769 | error: | |
bd238fb4 LI |
770 | if (fid) |
771 | p9_client_clunk(fid); | |
6a3124a3 | 772 | |
6a3124a3 | 773 | return err; |
2bad8471 EVH |
774 | } |
775 | ||
776 | /** | |
777 | * v9fs_vfs_mkdir - VFS mkdir hook to create a directory | |
ee443996 | 778 | * @dir: inode that is being unlinked |
2bad8471 EVH |
779 | * @dentry: dentry that is being unlinked |
780 | * @mode: mode for new directory | |
781 | * | |
782 | */ | |
783 | ||
18bb1db3 | 784 | static int v9fs_vfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) |
2bad8471 | 785 | { |
6a3124a3 | 786 | int err; |
bd238fb4 | 787 | u32 perm; |
bd238fb4 | 788 | struct p9_fid *fid; |
d28c61f0 | 789 | struct v9fs_session_info *v9ses; |
6a3124a3 | 790 | |
bd238fb4 LI |
791 | P9_DPRINTK(P9_DEBUG_VFS, "name %s\n", dentry->d_name.name); |
792 | err = 0; | |
6a3124a3 | 793 | v9ses = v9fs_inode2v9ses(dir); |
6a3124a3 | 794 | perm = unixmode2p9mode(v9ses, mode | S_IFDIR); |
bd238fb4 LI |
795 | fid = v9fs_create(v9ses, dir, dentry, NULL, perm, P9_OREAD); |
796 | if (IS_ERR(fid)) { | |
797 | err = PTR_ERR(fid); | |
798 | fid = NULL; | |
d28c61f0 | 799 | } else { |
b271ec47 | 800 | inc_nlink(dir); |
d28c61f0 AK |
801 | v9fs_invalidate_inode_attr(dir); |
802 | } | |
6a3124a3 | 803 | |
bd238fb4 LI |
804 | if (fid) |
805 | p9_client_clunk(fid); | |
6a3124a3 | 806 | |
6a3124a3 | 807 | return err; |
2bad8471 EVH |
808 | } |
809 | ||
810 | /** | |
811 | * v9fs_vfs_lookup - VFS lookup hook to "walk" to a new inode | |
812 | * @dir: inode that is being walked from | |
813 | * @dentry: dentry that is being walked to? | |
814 | * @nameidata: path data | |
815 | * | |
816 | */ | |
817 | ||
53c06f4e | 818 | struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry, |
2bad8471 EVH |
819 | struct nameidata *nameidata) |
820 | { | |
73f50717 | 821 | struct dentry *res; |
2bad8471 EVH |
822 | struct super_block *sb; |
823 | struct v9fs_session_info *v9ses; | |
bd238fb4 | 824 | struct p9_fid *dfid, *fid; |
2bad8471 | 825 | struct inode *inode; |
bd238fb4 | 826 | char *name; |
2bad8471 EVH |
827 | int result = 0; |
828 | ||
bd238fb4 | 829 | P9_DPRINTK(P9_DEBUG_VFS, "dir: %p dentry: (%s) %p nameidata: %p\n", |
731805b4 | 830 | dir, dentry->d_name.name, dentry, nameidata); |
2bad8471 | 831 | |
11e9b49b SK |
832 | if (dentry->d_name.len > NAME_MAX) |
833 | return ERR_PTR(-ENAMETOOLONG); | |
834 | ||
2bad8471 EVH |
835 | sb = dir->i_sb; |
836 | v9ses = v9fs_inode2v9ses(dir); | |
a534c8d1 | 837 | /* We can walk d_parent because we hold the dir->i_mutex */ |
bd238fb4 LI |
838 | dfid = v9fs_fid_lookup(dentry->d_parent); |
839 | if (IS_ERR(dfid)) | |
e231c2ee | 840 | return ERR_CAST(dfid); |
bd238fb4 LI |
841 | |
842 | name = (char *) dentry->d_name.name; | |
843 | fid = p9_client_walk(dfid, 1, &name, 1); | |
844 | if (IS_ERR(fid)) { | |
845 | result = PTR_ERR(fid); | |
2bad8471 | 846 | if (result == -ENOENT) { |
85e0df24 AK |
847 | inode = NULL; |
848 | goto inst_out; | |
2bad8471 | 849 | } |
2bad8471 | 850 | |
bd238fb4 | 851 | return ERR_PTR(result); |
2bad8471 | 852 | } |
73f50717 AK |
853 | /* |
854 | * Make sure we don't use a wrong inode due to parallel | |
855 | * unlink. For cached mode create calls request for new | |
856 | * inode. But with cache disabled, lookup should do this. | |
857 | */ | |
858 | if (v9ses->cache) | |
859 | inode = v9fs_get_inode_from_fid(v9ses, fid, dir->i_sb); | |
860 | else | |
861 | inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb); | |
bd238fb4 LI |
862 | if (IS_ERR(inode)) { |
863 | result = PTR_ERR(inode); | |
864 | inode = NULL; | |
865 | goto error; | |
2bad8471 | 866 | } |
bd238fb4 | 867 | result = v9fs_fid_add(dentry, fid); |
6a3124a3 | 868 | if (result < 0) |
9856af8b | 869 | goto error_iput; |
85e0df24 | 870 | inst_out: |
73f50717 AK |
871 | /* |
872 | * If we had a rename on the server and a parallel lookup | |
873 | * for the new name, then make sure we instantiate with | |
874 | * the new name. ie look up for a/b, while on server somebody | |
875 | * moved b under k and client parallely did a lookup for | |
876 | * k/b. | |
877 | */ | |
878 | res = d_materialise_unique(dentry, inode); | |
879 | if (!IS_ERR(res)) | |
880 | return res; | |
881 | result = PTR_ERR(res); | |
9856af8b AK |
882 | error_iput: |
883 | iput(inode); | |
bd238fb4 | 884 | error: |
62aa528e | 885 | p9_client_clunk(fid); |
da977b2c | 886 | |
2bad8471 EVH |
887 | return ERR_PTR(result); |
888 | } | |
889 | ||
890 | /** | |
891 | * v9fs_vfs_unlink - VFS unlink hook to delete an inode | |
892 | * @i: inode that is being unlinked | |
73c592b9 | 893 | * @d: dentry that is being unlinked |
2bad8471 EVH |
894 | * |
895 | */ | |
896 | ||
53c06f4e | 897 | int v9fs_vfs_unlink(struct inode *i, struct dentry *d) |
2bad8471 EVH |
898 | { |
899 | return v9fs_remove(i, d, 0); | |
900 | } | |
901 | ||
902 | /** | |
903 | * v9fs_vfs_rmdir - VFS unlink hook to delete a directory | |
904 | * @i: inode that is being unlinked | |
73c592b9 | 905 | * @d: dentry that is being unlinked |
2bad8471 EVH |
906 | * |
907 | */ | |
908 | ||
53c06f4e | 909 | int v9fs_vfs_rmdir(struct inode *i, struct dentry *d) |
2bad8471 | 910 | { |
48e370ff | 911 | return v9fs_remove(i, d, AT_REMOVEDIR); |
2bad8471 EVH |
912 | } |
913 | ||
914 | /** | |
915 | * v9fs_vfs_rename - VFS hook to rename an inode | |
916 | * @old_dir: old dir inode | |
917 | * @old_dentry: old dentry | |
918 | * @new_dir: new dir inode | |
919 | * @new_dentry: new dentry | |
920 | * | |
921 | */ | |
922 | ||
53c06f4e | 923 | int |
2bad8471 EVH |
924 | v9fs_vfs_rename(struct inode *old_dir, struct dentry *old_dentry, |
925 | struct inode *new_dir, struct dentry *new_dentry) | |
926 | { | |
d28c61f0 | 927 | int retval; |
bd238fb4 | 928 | struct inode *old_inode; |
b271ec47 | 929 | struct inode *new_inode; |
bd238fb4 LI |
930 | struct v9fs_session_info *v9ses; |
931 | struct p9_fid *oldfid; | |
932 | struct p9_fid *olddirfid; | |
933 | struct p9_fid *newdirfid; | |
934 | struct p9_wstat wstat; | |
2bad8471 | 935 | |
bd238fb4 LI |
936 | P9_DPRINTK(P9_DEBUG_VFS, "\n"); |
937 | retval = 0; | |
938 | old_inode = old_dentry->d_inode; | |
b271ec47 | 939 | new_inode = new_dentry->d_inode; |
bd238fb4 LI |
940 | v9ses = v9fs_inode2v9ses(old_inode); |
941 | oldfid = v9fs_fid_lookup(old_dentry); | |
ba17674f | 942 | if (IS_ERR(oldfid)) |
da977b2c EVH |
943 | return PTR_ERR(oldfid); |
944 | ||
945 | olddirfid = v9fs_fid_clone(old_dentry->d_parent); | |
ba17674f | 946 | if (IS_ERR(olddirfid)) { |
da977b2c | 947 | retval = PTR_ERR(olddirfid); |
bd238fb4 | 948 | goto done; |
da977b2c EVH |
949 | } |
950 | ||
951 | newdirfid = v9fs_fid_clone(new_dentry->d_parent); | |
ba17674f | 952 | if (IS_ERR(newdirfid)) { |
da977b2c | 953 | retval = PTR_ERR(newdirfid); |
bd238fb4 | 954 | goto clunk_olddir; |
2bad8471 EVH |
955 | } |
956 | ||
a534c8d1 | 957 | down_write(&v9ses->rename_sem); |
4681dbda | 958 | if (v9fs_proto_dotl(v9ses)) { |
9e8fb38e AK |
959 | retval = p9_client_renameat(olddirfid, old_dentry->d_name.name, |
960 | newdirfid, new_dentry->d_name.name); | |
961 | if (retval == -EOPNOTSUPP) | |
962 | retval = p9_client_rename(oldfid, newdirfid, | |
963 | new_dentry->d_name.name); | |
964 | if (retval != -EOPNOTSUPP) | |
4681dbda SK |
965 | goto clunk_newdir; |
966 | } | |
a534c8d1 AK |
967 | if (old_dentry->d_parent != new_dentry->d_parent) { |
968 | /* | |
969 | * 9P .u can only handle file rename in the same directory | |
970 | */ | |
4681dbda | 971 | |
bd238fb4 LI |
972 | P9_DPRINTK(P9_DEBUG_ERROR, |
973 | "old dir and new dir are different\n"); | |
621997cd | 974 | retval = -EXDEV; |
bd238fb4 | 975 | goto clunk_newdir; |
2bad8471 | 976 | } |
531b1094 | 977 | v9fs_blank_wstat(&wstat); |
ba17674f | 978 | wstat.muid = v9ses->uname; |
531b1094 | 979 | wstat.name = (char *) new_dentry->d_name.name; |
bd238fb4 | 980 | retval = p9_client_wstat(oldfid, &wstat); |
2bad8471 | 981 | |
bd238fb4 | 982 | clunk_newdir: |
b271ec47 AK |
983 | if (!retval) { |
984 | if (new_inode) { | |
985 | if (S_ISDIR(new_inode->i_mode)) | |
986 | clear_nlink(new_inode); | |
987 | else | |
988 | drop_nlink(new_inode); | |
989 | } | |
990 | if (S_ISDIR(old_inode->i_mode)) { | |
991 | if (!new_inode) | |
992 | inc_nlink(new_dir); | |
993 | drop_nlink(old_dir); | |
994 | } | |
3bc86de3 | 995 | v9fs_invalidate_inode_attr(old_inode); |
d28c61f0 AK |
996 | v9fs_invalidate_inode_attr(old_dir); |
997 | v9fs_invalidate_inode_attr(new_dir); | |
3bc86de3 | 998 | |
a534c8d1 AK |
999 | /* successful rename */ |
1000 | d_move(old_dentry, new_dentry); | |
b271ec47 | 1001 | } |
a534c8d1 | 1002 | up_write(&v9ses->rename_sem); |
22150c4f | 1003 | p9_client_clunk(newdirfid); |
2bad8471 | 1004 | |
bd238fb4 | 1005 | clunk_olddir: |
22150c4f | 1006 | p9_client_clunk(olddirfid); |
da977b2c | 1007 | |
bd238fb4 | 1008 | done: |
2bad8471 EVH |
1009 | return retval; |
1010 | } | |
1011 | ||
1012 | /** | |
943ffb58 | 1013 | * v9fs_vfs_getattr - retrieve file metadata |
ee443996 EVH |
1014 | * @mnt: mount information |
1015 | * @dentry: file to get attributes on | |
1016 | * @stat: metadata structure to populate | |
2bad8471 EVH |
1017 | * |
1018 | */ | |
1019 | ||
1020 | static int | |
1021 | v9fs_vfs_getattr(struct vfsmount *mnt, struct dentry *dentry, | |
1022 | struct kstat *stat) | |
1023 | { | |
bd238fb4 LI |
1024 | int err; |
1025 | struct v9fs_session_info *v9ses; | |
1026 | struct p9_fid *fid; | |
51a87c55 | 1027 | struct p9_wstat *st; |
bd238fb4 LI |
1028 | |
1029 | P9_DPRINTK(P9_DEBUG_VFS, "dentry: %p\n", dentry); | |
1030 | err = -EPERM; | |
42869c8a | 1031 | v9ses = v9fs_dentry2v9ses(dentry); |
a1211908 AK |
1032 | if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) { |
1033 | generic_fillattr(dentry->d_inode, stat); | |
1034 | return 0; | |
1035 | } | |
bd238fb4 LI |
1036 | fid = v9fs_fid_lookup(dentry); |
1037 | if (IS_ERR(fid)) | |
da977b2c | 1038 | return PTR_ERR(fid); |
2bad8471 | 1039 | |
bd238fb4 LI |
1040 | st = p9_client_stat(fid); |
1041 | if (IS_ERR(st)) | |
1042 | return PTR_ERR(st); | |
2bad8471 | 1043 | |
bd238fb4 | 1044 | v9fs_stat2inode(st, dentry->d_inode, dentry->d_inode->i_sb); |
45089142 | 1045 | generic_fillattr(dentry->d_inode, stat); |
2bad8471 | 1046 | |
62b2be59 | 1047 | p9stat_free(st); |
bd238fb4 LI |
1048 | kfree(st); |
1049 | return 0; | |
2bad8471 EVH |
1050 | } |
1051 | ||
1052 | /** | |
1053 | * v9fs_vfs_setattr - set file metadata | |
1054 | * @dentry: file whose metadata to set | |
1055 | * @iattr: metadata assignment structure | |
1056 | * | |
1057 | */ | |
1058 | ||
1059 | static int v9fs_vfs_setattr(struct dentry *dentry, struct iattr *iattr) | |
1060 | { | |
bd238fb4 LI |
1061 | int retval; |
1062 | struct v9fs_session_info *v9ses; | |
1063 | struct p9_fid *fid; | |
1064 | struct p9_wstat wstat; | |
2bad8471 | 1065 | |
bd238fb4 | 1066 | P9_DPRINTK(P9_DEBUG_VFS, "\n"); |
059c138b AK |
1067 | retval = inode_change_ok(dentry->d_inode, iattr); |
1068 | if (retval) | |
1069 | return retval; | |
1070 | ||
bd238fb4 | 1071 | retval = -EPERM; |
42869c8a | 1072 | v9ses = v9fs_dentry2v9ses(dentry); |
bd238fb4 | 1073 | fid = v9fs_fid_lookup(dentry); |
da977b2c EVH |
1074 | if(IS_ERR(fid)) |
1075 | return PTR_ERR(fid); | |
2bad8471 | 1076 | |
531b1094 | 1077 | v9fs_blank_wstat(&wstat); |
2bad8471 | 1078 | if (iattr->ia_valid & ATTR_MODE) |
531b1094 | 1079 | wstat.mode = unixmode2p9mode(v9ses, iattr->ia_mode); |
2bad8471 EVH |
1080 | |
1081 | if (iattr->ia_valid & ATTR_MTIME) | |
531b1094 | 1082 | wstat.mtime = iattr->ia_mtime.tv_sec; |
2bad8471 EVH |
1083 | |
1084 | if (iattr->ia_valid & ATTR_ATIME) | |
531b1094 | 1085 | wstat.atime = iattr->ia_atime.tv_sec; |
2bad8471 EVH |
1086 | |
1087 | if (iattr->ia_valid & ATTR_SIZE) | |
531b1094 | 1088 | wstat.length = iattr->ia_size; |
2bad8471 | 1089 | |
dd6102fb | 1090 | if (v9fs_proto_dotu(v9ses)) { |
531b1094 LI |
1091 | if (iattr->ia_valid & ATTR_UID) |
1092 | wstat.n_uid = iattr->ia_uid; | |
2bad8471 | 1093 | |
531b1094 LI |
1094 | if (iattr->ia_valid & ATTR_GID) |
1095 | wstat.n_gid = iattr->ia_gid; | |
2bad8471 | 1096 | } |
059c138b | 1097 | |
3dc5436a AK |
1098 | /* Write all dirty data */ |
1099 | if (S_ISREG(dentry->d_inode->i_mode)) | |
1100 | filemap_write_and_wait(dentry->d_inode->i_mapping); | |
1101 | ||
f10fc50f AK |
1102 | retval = p9_client_wstat(fid, &wstat); |
1103 | if (retval < 0) | |
1104 | return retval; | |
059c138b AK |
1105 | |
1106 | if ((iattr->ia_valid & ATTR_SIZE) && | |
1107 | iattr->ia_size != i_size_read(dentry->d_inode)) | |
1108 | truncate_setsize(dentry->d_inode, iattr->ia_size); | |
1109 | ||
f10fc50f | 1110 | v9fs_invalidate_inode_attr(dentry->d_inode); |
2bad8471 | 1111 | |
1025774c CH |
1112 | setattr_copy(dentry->d_inode, iattr); |
1113 | mark_inode_dirty(dentry->d_inode); | |
1114 | return 0; | |
2bad8471 EVH |
1115 | } |
1116 | ||
1117 | /** | |
531b1094 LI |
1118 | * v9fs_stat2inode - populate an inode structure with mistat info |
1119 | * @stat: Plan 9 metadata (mistat) structure | |
2bad8471 EVH |
1120 | * @inode: inode to populate |
1121 | * @sb: superblock of filesystem | |
1122 | * | |
1123 | */ | |
1124 | ||
1125 | void | |
51a87c55 | 1126 | v9fs_stat2inode(struct p9_wstat *stat, struct inode *inode, |
531b1094 | 1127 | struct super_block *sb) |
2bad8471 | 1128 | { |
3eda0de6 | 1129 | umode_t mode; |
531b1094 | 1130 | char ext[32]; |
5717144a AK |
1131 | char tag_name[14]; |
1132 | unsigned int i_nlink; | |
2bad8471 | 1133 | struct v9fs_session_info *v9ses = sb->s_fs_info; |
b3cbea03 | 1134 | struct v9fs_inode *v9inode = V9FS_I(inode); |
2bad8471 | 1135 | |
bfe86848 | 1136 | set_nlink(inode, 1); |
2bad8471 | 1137 | |
531b1094 LI |
1138 | inode->i_atime.tv_sec = stat->atime; |
1139 | inode->i_mtime.tv_sec = stat->mtime; | |
1140 | inode->i_ctime.tv_sec = stat->mtime; | |
2bad8471 | 1141 | |
bd32b82d LI |
1142 | inode->i_uid = v9ses->dfltuid; |
1143 | inode->i_gid = v9ses->dfltgid; | |
2bad8471 | 1144 | |
dd6102fb | 1145 | if (v9fs_proto_dotu(v9ses)) { |
531b1094 LI |
1146 | inode->i_uid = stat->n_uid; |
1147 | inode->i_gid = stat->n_gid; | |
2bad8471 | 1148 | } |
5717144a AK |
1149 | if ((S_ISREG(inode->i_mode)) || (S_ISDIR(inode->i_mode))) { |
1150 | if (v9fs_proto_dotu(v9ses) && (stat->extension[0] != '\0')) { | |
1151 | /* | |
1152 | * Hadlink support got added later to | |
1153 | * to the .u extension. So there can be | |
1154 | * server out there that doesn't support | |
1155 | * this even with .u extension. So check | |
1156 | * for non NULL stat->extension | |
1157 | */ | |
1158 | strncpy(ext, stat->extension, sizeof(ext)); | |
1159 | /* HARDLINKCOUNT %u */ | |
1160 | sscanf(ext, "%13s %u", tag_name, &i_nlink); | |
1161 | if (!strncmp(tag_name, "HARDLINKCOUNT", 13)) | |
bfe86848 | 1162 | set_nlink(inode, i_nlink); |
5717144a AK |
1163 | } |
1164 | } | |
45089142 AK |
1165 | mode = stat->mode & S_IALLUGO; |
1166 | mode |= inode->i_mode & ~S_IALLUGO; | |
1167 | inode->i_mode = mode; | |
7549ae3e | 1168 | i_size_write(inode, stat->length); |
2bad8471 | 1169 | |
bd238fb4 | 1170 | /* not real number of blocks, but 512 byte ones ... */ |
7549ae3e | 1171 | inode->i_blocks = (i_size_read(inode) + 512 - 1) >> 9; |
b3cbea03 | 1172 | v9inode->cache_validity &= ~V9FS_INO_INVALID_ATTR; |
2bad8471 EVH |
1173 | } |
1174 | ||
1175 | /** | |
1176 | * v9fs_qid2ino - convert qid into inode number | |
1177 | * @qid: qid to hash | |
1178 | * | |
1179 | * BUG: potential for inode number collisions? | |
1180 | */ | |
1181 | ||
bd238fb4 | 1182 | ino_t v9fs_qid2ino(struct p9_qid *qid) |
2bad8471 EVH |
1183 | { |
1184 | u64 path = qid->path + 2; | |
1185 | ino_t i = 0; | |
1186 | ||
1187 | if (sizeof(ino_t) == sizeof(path)) | |
1188 | memcpy(&i, &path, sizeof(ino_t)); | |
1189 | else | |
1190 | i = (ino_t) (path ^ (path >> 32)); | |
1191 | ||
1192 | return i; | |
1193 | } | |
1194 | ||
2bad8471 EVH |
1195 | /** |
1196 | * v9fs_readlink - read a symlink's location (internal version) | |
1197 | * @dentry: dentry for symlink | |
73c592b9 | 1198 | * @buffer: buffer to load symlink location into |
2bad8471 EVH |
1199 | * @buflen: length of buffer |
1200 | * | |
1201 | */ | |
1202 | ||
1203 | static int v9fs_readlink(struct dentry *dentry, char *buffer, int buflen) | |
1204 | { | |
bd238fb4 | 1205 | int retval; |
2bad8471 | 1206 | |
bd238fb4 LI |
1207 | struct v9fs_session_info *v9ses; |
1208 | struct p9_fid *fid; | |
51a87c55 | 1209 | struct p9_wstat *st; |
2bad8471 | 1210 | |
bd238fb4 LI |
1211 | P9_DPRINTK(P9_DEBUG_VFS, " %s\n", dentry->d_name.name); |
1212 | retval = -EPERM; | |
42869c8a | 1213 | v9ses = v9fs_dentry2v9ses(dentry); |
bd238fb4 | 1214 | fid = v9fs_fid_lookup(dentry); |
ba17674f | 1215 | if (IS_ERR(fid)) |
da977b2c | 1216 | return PTR_ERR(fid); |
2bad8471 | 1217 | |
329176cc | 1218 | if (!v9fs_proto_dotu(v9ses)) |
bd238fb4 | 1219 | return -EBADF; |
2bad8471 | 1220 | |
bd238fb4 LI |
1221 | st = p9_client_stat(fid); |
1222 | if (IS_ERR(st)) | |
1223 | return PTR_ERR(st); | |
2bad8471 | 1224 | |
bd238fb4 | 1225 | if (!(st->mode & P9_DMSYMLINK)) { |
2bad8471 | 1226 | retval = -EINVAL; |
bd238fb4 | 1227 | goto done; |
2bad8471 EVH |
1228 | } |
1229 | ||
1230 | /* copy extension buffer into buffer */ | |
51a87c55 | 1231 | strncpy(buffer, st->extension, buflen); |
2bad8471 | 1232 | |
bd238fb4 | 1233 | P9_DPRINTK(P9_DEBUG_VFS, |
51a87c55 | 1234 | "%s -> %s (%s)\n", dentry->d_name.name, st->extension, buffer); |
2bad8471 | 1235 | |
2511cd0b | 1236 | retval = strnlen(buffer, buflen); |
bd238fb4 | 1237 | done: |
62b2be59 | 1238 | p9stat_free(st); |
bd238fb4 | 1239 | kfree(st); |
2bad8471 EVH |
1240 | return retval; |
1241 | } | |
1242 | ||
2bad8471 EVH |
1243 | /** |
1244 | * v9fs_vfs_follow_link - follow a symlink path | |
1245 | * @dentry: dentry for symlink | |
1246 | * @nd: nameidata | |
1247 | * | |
1248 | */ | |
1249 | ||
1250 | static void *v9fs_vfs_follow_link(struct dentry *dentry, struct nameidata *nd) | |
1251 | { | |
1252 | int len = 0; | |
1253 | char *link = __getname(); | |
1254 | ||
bd238fb4 | 1255 | P9_DPRINTK(P9_DEBUG_VFS, "%s n", dentry->d_name.name); |
2bad8471 EVH |
1256 | |
1257 | if (!link) | |
1258 | link = ERR_PTR(-ENOMEM); | |
1259 | else { | |
16cce6d2 | 1260 | len = v9fs_readlink(dentry, link, PATH_MAX); |
2bad8471 EVH |
1261 | |
1262 | if (len < 0) { | |
ce44eeb6 | 1263 | __putname(link); |
2bad8471 EVH |
1264 | link = ERR_PTR(len); |
1265 | } else | |
2511cd0b | 1266 | link[min(len, PATH_MAX-1)] = 0; |
2bad8471 EVH |
1267 | } |
1268 | nd_set_link(nd, link); | |
1269 | ||
1270 | return NULL; | |
1271 | } | |
1272 | ||
1273 | /** | |
1274 | * v9fs_vfs_put_link - release a symlink path | |
1275 | * @dentry: dentry for symlink | |
1276 | * @nd: nameidata | |
ee443996 | 1277 | * @p: unused |
2bad8471 EVH |
1278 | * |
1279 | */ | |
1280 | ||
53c06f4e | 1281 | void |
ee443996 | 1282 | v9fs_vfs_put_link(struct dentry *dentry, struct nameidata *nd, void *p) |
2bad8471 EVH |
1283 | { |
1284 | char *s = nd_get_link(nd); | |
1285 | ||
6ff23207 DG |
1286 | P9_DPRINTK(P9_DEBUG_VFS, " %s %s\n", dentry->d_name.name, |
1287 | IS_ERR(s) ? "<error>" : s); | |
2bad8471 | 1288 | if (!IS_ERR(s)) |
ce44eeb6 | 1289 | __putname(s); |
2bad8471 EVH |
1290 | } |
1291 | ||
ee443996 EVH |
1292 | /** |
1293 | * v9fs_vfs_mkspecial - create a special file | |
1294 | * @dir: inode to create special file in | |
1295 | * @dentry: dentry to create | |
1296 | * @mode: mode to create special file | |
1297 | * @extension: 9p2000.u format extension string representing special file | |
1298 | * | |
1299 | */ | |
1300 | ||
531b1094 | 1301 | static int v9fs_vfs_mkspecial(struct inode *dir, struct dentry *dentry, |
c2837de7 | 1302 | u32 perm, const char *extension) |
2bad8471 | 1303 | { |
bd238fb4 | 1304 | struct p9_fid *fid; |
d28c61f0 | 1305 | struct v9fs_session_info *v9ses; |
2bad8471 | 1306 | |
6a3124a3 | 1307 | v9ses = v9fs_inode2v9ses(dir); |
dd6102fb | 1308 | if (!v9fs_proto_dotu(v9ses)) { |
bd238fb4 | 1309 | P9_DPRINTK(P9_DEBUG_ERROR, "not extended\n"); |
6a3124a3 | 1310 | return -EPERM; |
2bad8471 EVH |
1311 | } |
1312 | ||
bd238fb4 LI |
1313 | fid = v9fs_create(v9ses, dir, dentry, (char *) extension, perm, |
1314 | P9_OREAD); | |
1315 | if (IS_ERR(fid)) | |
1316 | return PTR_ERR(fid); | |
da977b2c | 1317 | |
d28c61f0 | 1318 | v9fs_invalidate_inode_attr(dir); |
bd238fb4 | 1319 | p9_client_clunk(fid); |
6a3124a3 | 1320 | return 0; |
531b1094 LI |
1321 | } |
1322 | ||
1323 | /** | |
1324 | * v9fs_vfs_symlink - helper function to create symlinks | |
1325 | * @dir: directory inode containing symlink | |
1326 | * @dentry: dentry for symlink | |
1327 | * @symname: symlink data | |
1328 | * | |
ee443996 | 1329 | * See Also: 9P2000.u RFC for more information |
531b1094 LI |
1330 | * |
1331 | */ | |
1332 | ||
1333 | static int | |
1334 | v9fs_vfs_symlink(struct inode *dir, struct dentry *dentry, const char *symname) | |
1335 | { | |
bd238fb4 LI |
1336 | P9_DPRINTK(P9_DEBUG_VFS, " %lu,%s,%s\n", dir->i_ino, |
1337 | dentry->d_name.name, symname); | |
531b1094 | 1338 | |
c2837de7 | 1339 | return v9fs_vfs_mkspecial(dir, dentry, P9_DMSYMLINK, symname); |
531b1094 LI |
1340 | } |
1341 | ||
1342 | /** | |
1343 | * v9fs_vfs_link - create a hardlink | |
1344 | * @old_dentry: dentry for file to link to | |
1345 | * @dir: inode destination for new link | |
1346 | * @dentry: dentry for link | |
1347 | * | |
1348 | */ | |
1349 | ||
531b1094 LI |
1350 | static int |
1351 | v9fs_vfs_link(struct dentry *old_dentry, struct inode *dir, | |
1352 | struct dentry *dentry) | |
1353 | { | |
1354 | int retval; | |
531b1094 | 1355 | char *name; |
d28c61f0 | 1356 | struct p9_fid *oldfid; |
531b1094 | 1357 | |
bd238fb4 LI |
1358 | P9_DPRINTK(P9_DEBUG_VFS, |
1359 | " %lu,%s,%s\n", dir->i_ino, dentry->d_name.name, | |
531b1094 LI |
1360 | old_dentry->d_name.name); |
1361 | ||
da977b2c | 1362 | oldfid = v9fs_fid_clone(old_dentry); |
ba17674f | 1363 | if (IS_ERR(oldfid)) |
da977b2c | 1364 | return PTR_ERR(oldfid); |
531b1094 LI |
1365 | |
1366 | name = __getname(); | |
da977b2c EVH |
1367 | if (unlikely(!name)) { |
1368 | retval = -ENOMEM; | |
1369 | goto clunk_fid; | |
1370 | } | |
0710d36a | 1371 | |
16cce6d2 | 1372 | sprintf(name, "%d\n", oldfid->fid); |
bd238fb4 | 1373 | retval = v9fs_vfs_mkspecial(dir, dentry, P9_DMLINK, name); |
531b1094 | 1374 | __putname(name); |
c06c066a AK |
1375 | if (!retval) { |
1376 | v9fs_refresh_inode(oldfid, old_dentry->d_inode); | |
d28c61f0 | 1377 | v9fs_invalidate_inode_attr(dir); |
c06c066a | 1378 | } |
da977b2c | 1379 | clunk_fid: |
bd238fb4 | 1380 | p9_client_clunk(oldfid); |
2bad8471 EVH |
1381 | return retval; |
1382 | } | |
1383 | ||
1384 | /** | |
1385 | * v9fs_vfs_mknod - create a special file | |
1386 | * @dir: inode destination for new link | |
1387 | * @dentry: dentry for file | |
1388 | * @mode: mode for creation | |
ee443996 | 1389 | * @rdev: device associated with special file |
2bad8471 EVH |
1390 | * |
1391 | */ | |
1392 | ||
1393 | static int | |
1a67aafb | 1394 | v9fs_vfs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t rdev) |
2bad8471 | 1395 | { |
c2837de7 | 1396 | struct v9fs_session_info *v9ses = v9fs_inode2v9ses(dir); |
531b1094 LI |
1397 | int retval; |
1398 | char *name; | |
c2837de7 | 1399 | u32 perm; |
2bad8471 | 1400 | |
bd238fb4 | 1401 | P9_DPRINTK(P9_DEBUG_VFS, |
c2837de7 | 1402 | " %lu,%s mode: %hx MAJOR: %u MINOR: %u\n", dir->i_ino, |
2bad8471 EVH |
1403 | dentry->d_name.name, mode, MAJOR(rdev), MINOR(rdev)); |
1404 | ||
531b1094 LI |
1405 | if (!new_valid_dev(rdev)) |
1406 | return -EINVAL; | |
2bad8471 | 1407 | |
531b1094 | 1408 | name = __getname(); |
c0291a05 ET |
1409 | if (!name) |
1410 | return -ENOMEM; | |
2bad8471 EVH |
1411 | /* build extension */ |
1412 | if (S_ISBLK(mode)) | |
531b1094 | 1413 | sprintf(name, "b %u %u", MAJOR(rdev), MINOR(rdev)); |
2bad8471 | 1414 | else if (S_ISCHR(mode)) |
531b1094 | 1415 | sprintf(name, "c %u %u", MAJOR(rdev), MINOR(rdev)); |
73c592b9 | 1416 | else if (S_ISFIFO(mode)) |
531b1094 | 1417 | *name = 0; |
75cc5c9b VJ |
1418 | else if (S_ISSOCK(mode)) |
1419 | *name = 0; | |
2bad8471 | 1420 | else { |
531b1094 LI |
1421 | __putname(name); |
1422 | return -EINVAL; | |
2bad8471 EVH |
1423 | } |
1424 | ||
c2837de7 AV |
1425 | perm = unixmode2p9mode(v9ses, mode); |
1426 | retval = v9fs_vfs_mkspecial(dir, dentry, perm, name); | |
531b1094 | 1427 | __putname(name); |
2bad8471 EVH |
1428 | |
1429 | return retval; | |
1430 | } | |
1431 | ||
b3cbea03 AK |
1432 | int v9fs_refresh_inode(struct p9_fid *fid, struct inode *inode) |
1433 | { | |
45089142 AK |
1434 | int umode; |
1435 | dev_t rdev; | |
b3cbea03 AK |
1436 | loff_t i_size; |
1437 | struct p9_wstat *st; | |
1438 | struct v9fs_session_info *v9ses; | |
1439 | ||
1440 | v9ses = v9fs_inode2v9ses(inode); | |
1441 | st = p9_client_stat(fid); | |
1442 | if (IS_ERR(st)) | |
1443 | return PTR_ERR(st); | |
45089142 AK |
1444 | /* |
1445 | * Don't update inode if the file type is different | |
1446 | */ | |
1447 | umode = p9mode2unixmode(v9ses, st, &rdev); | |
1448 | if ((inode->i_mode & S_IFMT) != (umode & S_IFMT)) | |
1449 | goto out; | |
b3cbea03 AK |
1450 | |
1451 | spin_lock(&inode->i_lock); | |
1452 | /* | |
1453 | * We don't want to refresh inode->i_size, | |
1454 | * because we may have cached data | |
1455 | */ | |
1456 | i_size = inode->i_size; | |
1457 | v9fs_stat2inode(st, inode, inode->i_sb); | |
1458 | if (v9ses->cache) | |
1459 | inode->i_size = i_size; | |
1460 | spin_unlock(&inode->i_lock); | |
45089142 | 1461 | out: |
b3cbea03 AK |
1462 | p9stat_free(st); |
1463 | kfree(st); | |
1464 | return 0; | |
1465 | } | |
1466 | ||
9b6533c9 SK |
1467 | static const struct inode_operations v9fs_dir_inode_operations_dotu = { |
1468 | .create = v9fs_vfs_create, | |
1469 | .lookup = v9fs_vfs_lookup, | |
1470 | .symlink = v9fs_vfs_symlink, | |
50cc42ff | 1471 | .link = v9fs_vfs_link, |
9b6533c9 SK |
1472 | .unlink = v9fs_vfs_unlink, |
1473 | .mkdir = v9fs_vfs_mkdir, | |
1474 | .rmdir = v9fs_vfs_rmdir, | |
1d76e313 | 1475 | .mknod = v9fs_vfs_mknod, |
9b6533c9 SK |
1476 | .rename = v9fs_vfs_rename, |
1477 | .getattr = v9fs_vfs_getattr, | |
1478 | .setattr = v9fs_vfs_setattr, | |
1479 | }; | |
1480 | ||
754661f1 | 1481 | static const struct inode_operations v9fs_dir_inode_operations = { |
b501611a EVH |
1482 | .create = v9fs_vfs_create, |
1483 | .lookup = v9fs_vfs_lookup, | |
1484 | .unlink = v9fs_vfs_unlink, | |
1485 | .mkdir = v9fs_vfs_mkdir, | |
1486 | .rmdir = v9fs_vfs_rmdir, | |
1487 | .mknod = v9fs_vfs_mknod, | |
1488 | .rename = v9fs_vfs_rename, | |
1489 | .getattr = v9fs_vfs_getattr, | |
1490 | .setattr = v9fs_vfs_setattr, | |
1491 | }; | |
1492 | ||
754661f1 | 1493 | static const struct inode_operations v9fs_file_inode_operations = { |
2bad8471 EVH |
1494 | .getattr = v9fs_vfs_getattr, |
1495 | .setattr = v9fs_vfs_setattr, | |
1496 | }; | |
1497 | ||
754661f1 | 1498 | static const struct inode_operations v9fs_symlink_inode_operations = { |
204f2f0e | 1499 | .readlink = generic_readlink, |
2bad8471 EVH |
1500 | .follow_link = v9fs_vfs_follow_link, |
1501 | .put_link = v9fs_vfs_put_link, | |
1502 | .getattr = v9fs_vfs_getattr, | |
1503 | .setattr = v9fs_vfs_setattr, | |
1504 | }; | |
9b6533c9 | 1505 |