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 | ||
73c592b9 | 62 | static int unixmode2p9mode(struct v9fs_session_info *v9ses, int 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 | 69 | if (S_ISLNK(mode)) |
bd238fb4 | 70 | res |= P9_DMSYMLINK; |
2bad8471 EVH |
71 | if (v9ses->nodev == 0) { |
72 | if (S_ISSOCK(mode)) | |
bd238fb4 | 73 | res |= P9_DMSOCKET; |
2bad8471 | 74 | if (S_ISFIFO(mode)) |
bd238fb4 | 75 | res |= P9_DMNAMEDPIPE; |
2bad8471 | 76 | if (S_ISBLK(mode)) |
bd238fb4 | 77 | res |= P9_DMDEVICE; |
2bad8471 | 78 | if (S_ISCHR(mode)) |
bd238fb4 | 79 | res |= P9_DMDEVICE; |
2bad8471 EVH |
80 | } |
81 | ||
82 | if ((mode & S_ISUID) == S_ISUID) | |
bd238fb4 | 83 | res |= P9_DMSETUID; |
2bad8471 | 84 | if ((mode & S_ISGID) == S_ISGID) |
bd238fb4 | 85 | res |= P9_DMSETGID; |
d199d652 AL |
86 | if ((mode & S_ISVTX) == S_ISVTX) |
87 | res |= P9_DMSETVTX; | |
bd238fb4 LI |
88 | if ((mode & P9_DMLINK)) |
89 | res |= P9_DMLINK; | |
2bad8471 EVH |
90 | } |
91 | ||
92 | return res; | |
93 | } | |
94 | ||
95 | /** | |
96 | * p9mode2unixmode- convert plan9 mode bits to unix mode bits | |
97 | * @v9ses: v9fs session information | |
45089142 AK |
98 | * @stat: p9_wstat from which mode need to be derived |
99 | * @rdev: major number, minor number in case of device files. | |
2bad8471 EVH |
100 | * |
101 | */ | |
45089142 AK |
102 | static int p9mode2unixmode(struct v9fs_session_info *v9ses, |
103 | struct p9_wstat *stat, dev_t *rdev) | |
2bad8471 EVH |
104 | { |
105 | int res; | |
45089142 | 106 | int mode = stat->mode; |
2bad8471 | 107 | |
45089142 AK |
108 | res = mode & S_IALLUGO; |
109 | *rdev = 0; | |
2bad8471 | 110 | |
bd238fb4 | 111 | if ((mode & P9_DMDIR) == P9_DMDIR) |
2bad8471 | 112 | res |= S_IFDIR; |
dd6102fb | 113 | else if ((mode & P9_DMSYMLINK) && (v9fs_proto_dotu(v9ses))) |
2bad8471 | 114 | res |= S_IFLNK; |
dd6102fb | 115 | else if ((mode & P9_DMSOCKET) && (v9fs_proto_dotu(v9ses)) |
2bad8471 EVH |
116 | && (v9ses->nodev == 0)) |
117 | res |= S_IFSOCK; | |
dd6102fb | 118 | else if ((mode & P9_DMNAMEDPIPE) && (v9fs_proto_dotu(v9ses)) |
2bad8471 EVH |
119 | && (v9ses->nodev == 0)) |
120 | res |= S_IFIFO; | |
dd6102fb | 121 | else if ((mode & P9_DMDEVICE) && (v9fs_proto_dotu(v9ses)) |
45089142 AK |
122 | && (v9ses->nodev == 0)) { |
123 | char type = 0, ext[32]; | |
124 | int major = -1, minor = -1; | |
125 | ||
126 | strncpy(ext, stat->extension, sizeof(ext)); | |
127 | sscanf(ext, "%c %u %u", &type, &major, &minor); | |
128 | switch (type) { | |
129 | case 'c': | |
130 | res |= S_IFCHR; | |
131 | break; | |
132 | case 'b': | |
133 | res |= S_IFBLK; | |
134 | break; | |
135 | default: | |
136 | P9_DPRINTK(P9_DEBUG_ERROR, | |
137 | "Unknown special type %c %s\n", type, | |
138 | stat->extension); | |
139 | }; | |
140 | *rdev = MKDEV(major, minor); | |
141 | } else | |
2bad8471 EVH |
142 | res |= S_IFREG; |
143 | ||
dd6102fb | 144 | if (v9fs_proto_dotu(v9ses)) { |
bd238fb4 | 145 | if ((mode & P9_DMSETUID) == P9_DMSETUID) |
2bad8471 EVH |
146 | res |= S_ISUID; |
147 | ||
bd238fb4 | 148 | if ((mode & P9_DMSETGID) == P9_DMSETGID) |
2bad8471 | 149 | res |= S_ISGID; |
d199d652 AL |
150 | |
151 | if ((mode & P9_DMSETVTX) == P9_DMSETVTX) | |
152 | res |= S_ISVTX; | |
2bad8471 | 153 | } |
2bad8471 EVH |
154 | return res; |
155 | } | |
156 | ||
ee443996 EVH |
157 | /** |
158 | * v9fs_uflags2omode- convert posix open flags to plan 9 mode bits | |
159 | * @uflags: flags to convert | |
2e4bef41 | 160 | * @extended: if .u extensions are active |
ee443996 EVH |
161 | */ |
162 | ||
2e4bef41 | 163 | int v9fs_uflags2omode(int uflags, int extended) |
6a3124a3 LI |
164 | { |
165 | int ret; | |
166 | ||
167 | ret = 0; | |
168 | switch (uflags&3) { | |
169 | default: | |
170 | case O_RDONLY: | |
bd238fb4 | 171 | ret = P9_OREAD; |
6a3124a3 LI |
172 | break; |
173 | ||
174 | case O_WRONLY: | |
bd238fb4 | 175 | ret = P9_OWRITE; |
6a3124a3 LI |
176 | break; |
177 | ||
178 | case O_RDWR: | |
bd238fb4 | 179 | ret = P9_ORDWR; |
6a3124a3 LI |
180 | break; |
181 | } | |
182 | ||
6a3124a3 | 183 | if (uflags & O_TRUNC) |
bd238fb4 | 184 | ret |= P9_OTRUNC; |
6a3124a3 | 185 | |
2e4bef41 EVH |
186 | if (extended) { |
187 | if (uflags & O_EXCL) | |
188 | ret |= P9_OEXCL; | |
189 | ||
190 | if (uflags & O_APPEND) | |
191 | ret |= P9_OAPPEND; | |
192 | } | |
6a3124a3 LI |
193 | |
194 | return ret; | |
195 | } | |
196 | ||
2bad8471 | 197 | /** |
531b1094 | 198 | * v9fs_blank_wstat - helper function to setup a 9P stat structure |
531b1094 | 199 | * @wstat: structure to initialize |
2bad8471 EVH |
200 | * |
201 | */ | |
202 | ||
7a4439c4 | 203 | void |
bd238fb4 | 204 | v9fs_blank_wstat(struct p9_wstat *wstat) |
2bad8471 | 205 | { |
531b1094 LI |
206 | wstat->type = ~0; |
207 | wstat->dev = ~0; | |
208 | wstat->qid.type = ~0; | |
209 | wstat->qid.version = ~0; | |
210 | *((long long *)&wstat->qid.path) = ~0; | |
211 | wstat->mode = ~0; | |
212 | wstat->atime = ~0; | |
213 | wstat->mtime = ~0; | |
214 | wstat->length = ~0; | |
215 | wstat->name = NULL; | |
216 | wstat->uid = NULL; | |
217 | wstat->gid = NULL; | |
218 | wstat->muid = NULL; | |
219 | wstat->n_uid = ~0; | |
220 | wstat->n_gid = ~0; | |
221 | wstat->n_muid = ~0; | |
222 | wstat->extension = NULL; | |
2bad8471 EVH |
223 | } |
224 | ||
60e78d2c AK |
225 | /** |
226 | * v9fs_alloc_inode - helper function to allocate an inode | |
60e78d2c AK |
227 | * |
228 | */ | |
60e78d2c AK |
229 | struct inode *v9fs_alloc_inode(struct super_block *sb) |
230 | { | |
a78ce05d AK |
231 | struct v9fs_inode *v9inode; |
232 | v9inode = (struct v9fs_inode *)kmem_cache_alloc(v9fs_inode_cache, | |
233 | GFP_KERNEL); | |
234 | if (!v9inode) | |
60e78d2c | 235 | return NULL; |
a78ce05d AK |
236 | #ifdef CONFIG_9P_FSCACHE |
237 | v9inode->fscache = NULL; | |
a78ce05d AK |
238 | spin_lock_init(&v9inode->fscache_lock); |
239 | #endif | |
6b39f6d2 | 240 | v9inode->writeback_fid = NULL; |
b3cbea03 | 241 | v9inode->cache_validity = 0; |
5a7e0a8c | 242 | mutex_init(&v9inode->v_mutex); |
a78ce05d | 243 | return &v9inode->vfs_inode; |
60e78d2c AK |
244 | } |
245 | ||
246 | /** | |
247 | * v9fs_destroy_inode - destroy an inode | |
248 | * | |
249 | */ | |
250 | ||
fa0d7e3d | 251 | static void v9fs_i_callback(struct rcu_head *head) |
60e78d2c | 252 | { |
fa0d7e3d NP |
253 | struct inode *inode = container_of(head, struct inode, i_rcu); |
254 | INIT_LIST_HEAD(&inode->i_dentry); | |
a78ce05d | 255 | kmem_cache_free(v9fs_inode_cache, V9FS_I(inode)); |
60e78d2c | 256 | } |
fa0d7e3d NP |
257 | |
258 | void v9fs_destroy_inode(struct inode *inode) | |
259 | { | |
260 | call_rcu(&inode->i_rcu, v9fs_i_callback); | |
261 | } | |
60e78d2c | 262 | |
5ffc0cb3 | 263 | int v9fs_init_inode(struct v9fs_session_info *v9ses, |
45089142 | 264 | struct inode *inode, int mode, dev_t rdev) |
2bad8471 | 265 | { |
5ffc0cb3 | 266 | int err = 0; |
2bb54115 | 267 | |
217f206d | 268 | inode_init_owner(inode, NULL, mode); |
2bb54115 | 269 | inode->i_blocks = 0; |
45089142 | 270 | inode->i_rdev = rdev; |
2bb54115 AK |
271 | inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME; |
272 | inode->i_mapping->a_ops = &v9fs_addr_operations; | |
273 | ||
274 | switch (mode & S_IFMT) { | |
275 | case S_IFIFO: | |
276 | case S_IFBLK: | |
277 | case S_IFCHR: | |
278 | case S_IFSOCK: | |
4b43516a MK |
279 | if (v9fs_proto_dotl(v9ses)) { |
280 | inode->i_op = &v9fs_file_inode_operations_dotl; | |
4b43516a MK |
281 | } else if (v9fs_proto_dotu(v9ses)) { |
282 | inode->i_op = &v9fs_file_inode_operations; | |
4b43516a | 283 | } else { |
bd238fb4 | 284 | P9_DPRINTK(P9_DEBUG_ERROR, |
2bb54115 AK |
285 | "special files without extended mode\n"); |
286 | err = -EINVAL; | |
287 | goto error; | |
2bad8471 | 288 | } |
2bb54115 AK |
289 | init_special_inode(inode, inode->i_mode, inode->i_rdev); |
290 | break; | |
291 | case S_IFREG: | |
9b6533c9 SK |
292 | if (v9fs_proto_dotl(v9ses)) { |
293 | inode->i_op = &v9fs_file_inode_operations_dotl; | |
29236f4e AK |
294 | if (v9ses->cache) |
295 | inode->i_fop = | |
296 | &v9fs_cached_file_operations_dotl; | |
297 | else | |
298 | inode->i_fop = &v9fs_file_operations_dotl; | |
9b6533c9 SK |
299 | } else { |
300 | inode->i_op = &v9fs_file_inode_operations; | |
29236f4e AK |
301 | if (v9ses->cache) |
302 | inode->i_fop = &v9fs_cached_file_operations; | |
303 | else | |
304 | inode->i_fop = &v9fs_file_operations; | |
9b6533c9 SK |
305 | } |
306 | ||
2bb54115 AK |
307 | break; |
308 | case S_IFLNK: | |
9b6533c9 SK |
309 | if (!v9fs_proto_dotu(v9ses) && !v9fs_proto_dotl(v9ses)) { |
310 | P9_DPRINTK(P9_DEBUG_ERROR, "extended modes used with " | |
311 | "legacy protocol.\n"); | |
2bb54115 AK |
312 | err = -EINVAL; |
313 | goto error; | |
314 | } | |
9b6533c9 SK |
315 | |
316 | if (v9fs_proto_dotl(v9ses)) | |
317 | inode->i_op = &v9fs_symlink_inode_operations_dotl; | |
318 | else | |
319 | inode->i_op = &v9fs_symlink_inode_operations; | |
320 | ||
2bb54115 AK |
321 | break; |
322 | case S_IFDIR: | |
323 | inc_nlink(inode); | |
9b6533c9 SK |
324 | if (v9fs_proto_dotl(v9ses)) |
325 | inode->i_op = &v9fs_dir_inode_operations_dotl; | |
326 | else if (v9fs_proto_dotu(v9ses)) | |
327 | inode->i_op = &v9fs_dir_inode_operations_dotu; | |
2bb54115 AK |
328 | else |
329 | inode->i_op = &v9fs_dir_inode_operations; | |
9b6533c9 SK |
330 | |
331 | if (v9fs_proto_dotl(v9ses)) | |
332 | inode->i_fop = &v9fs_dir_operations_dotl; | |
333 | else | |
334 | inode->i_fop = &v9fs_dir_operations; | |
335 | ||
2bb54115 AK |
336 | break; |
337 | default: | |
338 | P9_DPRINTK(P9_DEBUG_ERROR, "BAD mode 0x%x S_IFMT 0x%x\n", | |
339 | mode, mode & S_IFMT); | |
340 | err = -EINVAL; | |
341 | goto error; | |
2bad8471 | 342 | } |
5ffc0cb3 AK |
343 | error: |
344 | return err; | |
2bb54115 | 345 | |
5ffc0cb3 | 346 | } |
2bb54115 | 347 | |
5ffc0cb3 AK |
348 | /** |
349 | * v9fs_get_inode - helper function to setup an inode | |
350 | * @sb: superblock | |
351 | * @mode: mode to setup inode with | |
352 | * | |
353 | */ | |
354 | ||
45089142 | 355 | struct inode *v9fs_get_inode(struct super_block *sb, int mode, dev_t rdev) |
5ffc0cb3 AK |
356 | { |
357 | int err; | |
358 | struct inode *inode; | |
359 | struct v9fs_session_info *v9ses = sb->s_fs_info; | |
360 | ||
361 | P9_DPRINTK(P9_DEBUG_VFS, "super block: %p mode: %o\n", sb, mode); | |
362 | ||
363 | inode = new_inode(sb); | |
364 | if (!inode) { | |
365 | P9_EPRINTK(KERN_WARNING, "Problem allocating inode\n"); | |
366 | return ERR_PTR(-ENOMEM); | |
367 | } | |
45089142 | 368 | err = v9fs_init_inode(v9ses, inode, mode, rdev); |
5ffc0cb3 AK |
369 | if (err) { |
370 | iput(inode); | |
371 | return ERR_PTR(err); | |
372 | } | |
373 | return inode; | |
2bad8471 EVH |
374 | } |
375 | ||
bd238fb4 | 376 | /* |
6a3124a3 LI |
377 | static struct v9fs_fid* |
378 | v9fs_clone_walk(struct v9fs_session_info *v9ses, u32 fid, struct dentry *dentry) | |
379 | { | |
380 | int err; | |
736c4b85 | 381 | int nfid; |
6a3124a3 LI |
382 | struct v9fs_fid *ret; |
383 | struct v9fs_fcall *fcall; | |
384 | ||
385 | nfid = v9fs_get_idpool(&v9ses->fidpool); | |
386 | if (nfid < 0) { | |
0b8dd177 | 387 | eprintk(KERN_WARNING, "no free fids available\n"); |
731805b4 | 388 | return ERR_PTR(-ENOSPC); |
0b8dd177 LI |
389 | } |
390 | ||
6a3124a3 LI |
391 | err = v9fs_t_walk(v9ses, fid, nfid, (char *) dentry->d_name.name, |
392 | &fcall); | |
393 | ||
394 | if (err < 0) { | |
41e5a6ac LI |
395 | if (fcall && fcall->id == RWALK) |
396 | goto clunk_fid; | |
397 | ||
6a3124a3 LI |
398 | PRINT_FCALL_ERROR("walk error", fcall); |
399 | v9fs_put_idpool(nfid, &v9ses->fidpool); | |
400 | goto error; | |
0b8dd177 | 401 | } |
6a3124a3 | 402 | |
3cf6429a LI |
403 | kfree(fcall); |
404 | fcall = NULL; | |
6a3124a3 LI |
405 | ret = v9fs_fid_create(v9ses, nfid); |
406 | if (!ret) { | |
407 | err = -ENOMEM; | |
408 | goto clunk_fid; | |
409 | } | |
0b8dd177 | 410 | |
6a3124a3 LI |
411 | err = v9fs_fid_insert(ret, dentry); |
412 | if (err < 0) { | |
413 | v9fs_fid_destroy(ret); | |
414 | goto clunk_fid; | |
0b8dd177 | 415 | } |
2bad8471 | 416 | |
6a3124a3 | 417 | return ret; |
2bad8471 | 418 | |
6a3124a3 LI |
419 | clunk_fid: |
420 | v9fs_t_clunk(v9ses, nfid); | |
2bad8471 | 421 | |
6a3124a3 LI |
422 | error: |
423 | kfree(fcall); | |
424 | return ERR_PTR(err); | |
425 | } | |
bd238fb4 | 426 | */ |
2bad8471 | 427 | |
60e78d2c AK |
428 | |
429 | /** | |
430 | * v9fs_clear_inode - release an inode | |
431 | * @inode: inode to release | |
432 | * | |
433 | */ | |
b57922d9 | 434 | void v9fs_evict_inode(struct inode *inode) |
60e78d2c | 435 | { |
6b39f6d2 AK |
436 | struct v9fs_inode *v9inode = V9FS_I(inode); |
437 | ||
b57922d9 AV |
438 | truncate_inode_pages(inode->i_mapping, 0); |
439 | end_writeback(inode); | |
60e78d2c AK |
440 | filemap_fdatawrite(inode->i_mapping); |
441 | ||
442 | #ifdef CONFIG_9P_FSCACHE | |
443 | v9fs_cache_inode_put_cookie(inode); | |
444 | #endif | |
6b39f6d2 AK |
445 | /* clunk the fid stashed in writeback_fid */ |
446 | if (v9inode->writeback_fid) { | |
447 | p9_client_clunk(v9inode->writeback_fid); | |
448 | v9inode->writeback_fid = NULL; | |
3cf387d7 | 449 | } |
60e78d2c AK |
450 | } |
451 | ||
fd2421f5 AK |
452 | static int v9fs_test_inode(struct inode *inode, void *data) |
453 | { | |
454 | int umode; | |
45089142 | 455 | dev_t rdev; |
fd2421f5 AK |
456 | struct v9fs_inode *v9inode = V9FS_I(inode); |
457 | struct p9_wstat *st = (struct p9_wstat *)data; | |
458 | struct v9fs_session_info *v9ses = v9fs_inode2v9ses(inode); | |
459 | ||
45089142 | 460 | umode = p9mode2unixmode(v9ses, st, &rdev); |
fd2421f5 AK |
461 | /* don't match inode of different type */ |
462 | if ((inode->i_mode & S_IFMT) != (umode & S_IFMT)) | |
463 | return 0; | |
464 | ||
465 | /* compare qid details */ | |
466 | if (memcmp(&v9inode->qid.version, | |
467 | &st->qid.version, sizeof(v9inode->qid.version))) | |
468 | return 0; | |
469 | ||
470 | if (v9inode->qid.type != st->qid.type) | |
471 | return 0; | |
472 | return 1; | |
473 | } | |
474 | ||
ed80fcfa AK |
475 | static int v9fs_test_new_inode(struct inode *inode, void *data) |
476 | { | |
477 | return 0; | |
478 | } | |
479 | ||
fd2421f5 AK |
480 | static int v9fs_set_inode(struct inode *inode, void *data) |
481 | { | |
482 | struct v9fs_inode *v9inode = V9FS_I(inode); | |
483 | struct p9_wstat *st = (struct p9_wstat *)data; | |
484 | ||
485 | memcpy(&v9inode->qid, &st->qid, sizeof(st->qid)); | |
486 | return 0; | |
487 | } | |
488 | ||
5ffc0cb3 AK |
489 | static struct inode *v9fs_qid_iget(struct super_block *sb, |
490 | struct p9_qid *qid, | |
ed80fcfa AK |
491 | struct p9_wstat *st, |
492 | int new) | |
6a3124a3 | 493 | { |
45089142 | 494 | dev_t rdev; |
5ffc0cb3 AK |
495 | int retval, umode; |
496 | unsigned long i_ino; | |
497 | struct inode *inode; | |
498 | struct v9fs_session_info *v9ses = sb->s_fs_info; | |
ed80fcfa AK |
499 | int (*test)(struct inode *, void *); |
500 | ||
501 | if (new) | |
502 | test = v9fs_test_new_inode; | |
503 | else | |
504 | test = v9fs_test_inode; | |
2bad8471 | 505 | |
5ffc0cb3 | 506 | i_ino = v9fs_qid2ino(qid); |
ed80fcfa | 507 | inode = iget5_locked(sb, i_ino, test, v9fs_set_inode, st); |
5ffc0cb3 AK |
508 | if (!inode) |
509 | return ERR_PTR(-ENOMEM); | |
510 | if (!(inode->i_state & I_NEW)) | |
511 | return inode; | |
512 | /* | |
513 | * initialize the inode with the stat info | |
514 | * FIXME!! we may need support for stale inodes | |
515 | * later. | |
516 | */ | |
fd2421f5 | 517 | inode->i_ino = i_ino; |
45089142 AK |
518 | umode = p9mode2unixmode(v9ses, st, &rdev); |
519 | retval = v9fs_init_inode(v9ses, inode, umode, rdev); | |
5ffc0cb3 | 520 | if (retval) |
6a3124a3 | 521 | goto error; |
60e78d2c | 522 | |
5ffc0cb3 | 523 | v9fs_stat2inode(st, inode, sb); |
60e78d2c | 524 | #ifdef CONFIG_9P_FSCACHE |
5ffc0cb3 | 525 | v9fs_cache_inode_get_cookie(inode); |
60e78d2c | 526 | #endif |
5ffc0cb3 AK |
527 | unlock_new_inode(inode); |
528 | return inode; | |
6a3124a3 | 529 | error: |
5ffc0cb3 AK |
530 | unlock_new_inode(inode); |
531 | iput(inode); | |
532 | return ERR_PTR(retval); | |
533 | ||
534 | } | |
535 | ||
536 | struct inode * | |
a78ce05d | 537 | v9fs_inode_from_fid(struct v9fs_session_info *v9ses, struct p9_fid *fid, |
ed80fcfa | 538 | struct super_block *sb, int new) |
5ffc0cb3 AK |
539 | { |
540 | struct p9_wstat *st; | |
541 | struct inode *inode = NULL; | |
542 | ||
543 | st = p9_client_stat(fid); | |
544 | if (IS_ERR(st)) | |
545 | return ERR_CAST(st); | |
546 | ||
ed80fcfa | 547 | inode = v9fs_qid_iget(sb, &st->qid, st, new); |
02bc3567 | 548 | p9stat_free(st); |
bd238fb4 | 549 | kfree(st); |
5ffc0cb3 | 550 | return inode; |
2bad8471 EVH |
551 | } |
552 | ||
f88657ce AK |
553 | /** |
554 | * v9fs_at_to_dotl_flags- convert Linux specific AT flags to | |
555 | * plan 9 AT flag. | |
556 | * @flags: flags to convert | |
557 | */ | |
558 | static int v9fs_at_to_dotl_flags(int flags) | |
559 | { | |
560 | int rflags = 0; | |
561 | if (flags & AT_REMOVEDIR) | |
562 | rflags |= P9_DOTL_AT_REMOVEDIR; | |
563 | return rflags; | |
564 | } | |
565 | ||
2bad8471 EVH |
566 | /** |
567 | * v9fs_remove - helper function to remove files and directories | |
73c592b9 | 568 | * @dir: directory inode that is being deleted |
48e370ff | 569 | * @dentry: dentry that is being deleted |
73c592b9 | 570 | * @rmdir: removing a directory |
2bad8471 EVH |
571 | * |
572 | */ | |
573 | ||
48e370ff | 574 | static int v9fs_remove(struct inode *dir, struct dentry *dentry, int flags) |
2bad8471 | 575 | { |
48e370ff AK |
576 | struct inode *inode; |
577 | int retval = -EOPNOTSUPP; | |
578 | struct p9_fid *v9fid, *dfid; | |
579 | struct v9fs_session_info *v9ses; | |
2bad8471 | 580 | |
48e370ff AK |
581 | P9_DPRINTK(P9_DEBUG_VFS, "inode: %p dentry: %p rmdir: %x\n", |
582 | dir, dentry, flags); | |
2bad8471 | 583 | |
48e370ff AK |
584 | v9ses = v9fs_inode2v9ses(dir); |
585 | inode = dentry->d_inode; | |
586 | dfid = v9fs_fid_lookup(dentry->d_parent); | |
587 | if (IS_ERR(dfid)) { | |
588 | retval = PTR_ERR(dfid); | |
589 | P9_DPRINTK(P9_DEBUG_VFS, "fid lookup failed %d\n", retval); | |
590 | return retval; | |
591 | } | |
592 | if (v9fs_proto_dotl(v9ses)) | |
f88657ce AK |
593 | retval = p9_client_unlinkat(dfid, dentry->d_name.name, |
594 | v9fs_at_to_dotl_flags(flags)); | |
48e370ff AK |
595 | if (retval == -EOPNOTSUPP) { |
596 | /* Try the one based on path */ | |
597 | v9fid = v9fs_fid_clone(dentry); | |
598 | if (IS_ERR(v9fid)) | |
599 | return PTR_ERR(v9fid); | |
600 | retval = p9_client_remove(v9fid); | |
601 | } | |
b271ec47 AK |
602 | if (!retval) { |
603 | /* | |
604 | * directories on unlink should have zero | |
605 | * link count | |
606 | */ | |
48e370ff AK |
607 | if (flags & AT_REMOVEDIR) { |
608 | clear_nlink(inode); | |
b271ec47 AK |
609 | drop_nlink(dir); |
610 | } else | |
48e370ff | 611 | drop_nlink(inode); |
d28c61f0 | 612 | |
48e370ff | 613 | v9fs_invalidate_inode_attr(inode); |
d28c61f0 | 614 | v9fs_invalidate_inode_attr(dir); |
b271ec47 | 615 | } |
d994f405 | 616 | return retval; |
2bad8471 EVH |
617 | } |
618 | ||
619 | /** | |
bd238fb4 | 620 | * v9fs_create - Create a file |
ee443996 EVH |
621 | * @v9ses: session information |
622 | * @dir: directory that dentry is being created in | |
bd238fb4 | 623 | * @dentry: dentry that is being created |
0e15597e | 624 | * @extension: 9p2000.u extension string to support devices, etc. |
bd238fb4 LI |
625 | * @perm: create permissions |
626 | * @mode: open mode | |
2bad8471 EVH |
627 | * |
628 | */ | |
bd238fb4 LI |
629 | static struct p9_fid * |
630 | v9fs_create(struct v9fs_session_info *v9ses, struct inode *dir, | |
631 | struct dentry *dentry, char *extension, u32 perm, u8 mode) | |
2bad8471 | 632 | { |
6a3124a3 | 633 | int err; |
bd238fb4 LI |
634 | char *name; |
635 | struct p9_fid *dfid, *ofid, *fid; | |
6a3124a3 | 636 | struct inode *inode; |
6a3124a3 | 637 | |
51a87c55 EVH |
638 | P9_DPRINTK(P9_DEBUG_VFS, "name %s\n", dentry->d_name.name); |
639 | ||
bd238fb4 LI |
640 | err = 0; |
641 | ofid = NULL; | |
642 | fid = NULL; | |
643 | name = (char *) dentry->d_name.name; | |
6d27e64d | 644 | dfid = v9fs_fid_lookup(dentry->d_parent); |
ba17674f | 645 | if (IS_ERR(dfid)) { |
da977b2c | 646 | err = PTR_ERR(dfid); |
6d27e64d VJ |
647 | P9_DPRINTK(P9_DEBUG_VFS, "fid lookup failed %d\n", err); |
648 | return ERR_PTR(err); | |
da977b2c | 649 | } |
6a3124a3 | 650 | |
bd238fb4 LI |
651 | /* clone a fid to use for creation */ |
652 | ofid = p9_client_walk(dfid, 0, NULL, 1); | |
653 | if (IS_ERR(ofid)) { | |
654 | err = PTR_ERR(ofid); | |
51a87c55 | 655 | P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err); |
6d27e64d | 656 | return ERR_PTR(err); |
bd238fb4 | 657 | } |
6a3124a3 | 658 | |
bd238fb4 | 659 | err = p9_client_fcreate(ofid, name, perm, mode, extension); |
51a87c55 EVH |
660 | if (err < 0) { |
661 | P9_DPRINTK(P9_DEBUG_VFS, "p9_client_fcreate failed %d\n", err); | |
bd238fb4 | 662 | goto error; |
51a87c55 | 663 | } |
6a3124a3 | 664 | |
bd238fb4 | 665 | /* now walk from the parent so we can get unopened fid */ |
6d27e64d | 666 | fid = p9_client_walk(dfid, 1, &name, 1); |
bd238fb4 LI |
667 | if (IS_ERR(fid)) { |
668 | err = PTR_ERR(fid); | |
51a87c55 | 669 | P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err); |
bd238fb4 | 670 | fid = NULL; |
6a3124a3 | 671 | goto error; |
6d27e64d | 672 | } |
6a3124a3 | 673 | |
bd238fb4 | 674 | /* instantiate inode and assign the unopened fid to the dentry */ |
ed80fcfa | 675 | inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb); |
6a3124a3 LI |
676 | if (IS_ERR(inode)) { |
677 | err = PTR_ERR(inode); | |
51a87c55 | 678 | P9_DPRINTK(P9_DEBUG_VFS, "inode creation failed %d\n", err); |
6a3124a3 LI |
679 | goto error; |
680 | } | |
50fb6d2b AK |
681 | err = v9fs_fid_add(dentry, fid); |
682 | if (err < 0) | |
683 | goto error; | |
5441ae5e | 684 | d_instantiate(dentry, inode); |
bd238fb4 | 685 | return ofid; |
bd238fb4 | 686 | error: |
bd238fb4 LI |
687 | if (ofid) |
688 | p9_client_clunk(ofid); | |
689 | ||
690 | if (fid) | |
691 | p9_client_clunk(fid); | |
692 | ||
693 | return ERR_PTR(err); | |
694 | } | |
695 | ||
696 | /** | |
697 | * v9fs_vfs_create - VFS hook to create files | |
ee443996 | 698 | * @dir: directory inode that is being created |
bd238fb4 LI |
699 | * @dentry: dentry that is being deleted |
700 | * @mode: create permissions | |
701 | * @nd: path information | |
702 | * | |
703 | */ | |
6a3124a3 | 704 | |
bd238fb4 LI |
705 | static int |
706 | v9fs_vfs_create(struct inode *dir, struct dentry *dentry, int mode, | |
707 | struct nameidata *nd) | |
708 | { | |
709 | int err; | |
710 | u32 perm; | |
711 | int flags; | |
6b39f6d2 AK |
712 | struct file *filp; |
713 | struct v9fs_inode *v9inode; | |
bd238fb4 | 714 | struct v9fs_session_info *v9ses; |
3cf387d7 | 715 | struct p9_fid *fid, *inode_fid; |
bd238fb4 LI |
716 | |
717 | err = 0; | |
718 | fid = NULL; | |
719 | v9ses = v9fs_inode2v9ses(dir); | |
720 | perm = unixmode2p9mode(v9ses, mode); | |
dd7dd556 | 721 | if (nd) |
8a5e929d | 722 | flags = nd->intent.open.flags; |
bd238fb4 LI |
723 | else |
724 | flags = O_RDWR; | |
725 | ||
726 | fid = v9fs_create(v9ses, dir, dentry, NULL, perm, | |
dd6102fb SK |
727 | v9fs_uflags2omode(flags, |
728 | v9fs_proto_dotu(v9ses))); | |
bd238fb4 LI |
729 | if (IS_ERR(fid)) { |
730 | err = PTR_ERR(fid); | |
731 | fid = NULL; | |
732 | goto error; | |
733 | } | |
734 | ||
d28c61f0 | 735 | v9fs_invalidate_inode_attr(dir); |
bd238fb4 | 736 | /* if we are opening a file, assign the open fid to the file */ |
dd7dd556 | 737 | if (nd) { |
6b39f6d2 | 738 | v9inode = V9FS_I(dentry->d_inode); |
5a7e0a8c | 739 | mutex_lock(&v9inode->v_mutex); |
7add697a AK |
740 | if (v9ses->cache && !v9inode->writeback_fid && |
741 | ((flags & O_ACCMODE) != O_RDONLY)) { | |
3cf387d7 | 742 | /* |
6b39f6d2 | 743 | * clone a fid and add it to writeback_fid |
3cf387d7 AK |
744 | * we do it during open time instead of |
745 | * page dirty time via write_begin/page_mkwrite | |
746 | * because we want write after unlink usecase | |
747 | * to work. | |
748 | */ | |
749 | inode_fid = v9fs_writeback_fid(dentry); | |
750 | if (IS_ERR(inode_fid)) { | |
751 | err = PTR_ERR(inode_fid); | |
5a7e0a8c | 752 | mutex_unlock(&v9inode->v_mutex); |
3cf387d7 AK |
753 | goto error; |
754 | } | |
6b39f6d2 | 755 | v9inode->writeback_fid = (void *) inode_fid; |
3cf387d7 | 756 | } |
5a7e0a8c | 757 | mutex_unlock(&v9inode->v_mutex); |
877cb3d4 | 758 | filp = lookup_instantiate_filp(nd, dentry, generic_file_open); |
6a3124a3 | 759 | if (IS_ERR(filp)) { |
bd238fb4 LI |
760 | err = PTR_ERR(filp); |
761 | goto error; | |
6a3124a3 LI |
762 | } |
763 | ||
bd238fb4 | 764 | filp->private_data = fid; |
46848de0 AK |
765 | #ifdef CONFIG_9P_FSCACHE |
766 | if (v9ses->cache) | |
767 | v9fs_cache_inode_set_cookie(dentry->d_inode, filp); | |
768 | #endif | |
bd238fb4 LI |
769 | } else |
770 | p9_client_clunk(fid); | |
6a3124a3 LI |
771 | |
772 | return 0; | |
773 | ||
774 | error: | |
bd238fb4 LI |
775 | if (fid) |
776 | p9_client_clunk(fid); | |
6a3124a3 | 777 | |
6a3124a3 | 778 | return err; |
2bad8471 EVH |
779 | } |
780 | ||
781 | /** | |
782 | * v9fs_vfs_mkdir - VFS mkdir hook to create a directory | |
ee443996 | 783 | * @dir: inode that is being unlinked |
2bad8471 EVH |
784 | * @dentry: dentry that is being unlinked |
785 | * @mode: mode for new directory | |
786 | * | |
787 | */ | |
788 | ||
6a3124a3 | 789 | static int v9fs_vfs_mkdir(struct inode *dir, struct dentry *dentry, int mode) |
2bad8471 | 790 | { |
6a3124a3 | 791 | int err; |
bd238fb4 | 792 | u32 perm; |
bd238fb4 | 793 | struct p9_fid *fid; |
d28c61f0 | 794 | struct v9fs_session_info *v9ses; |
6a3124a3 | 795 | |
bd238fb4 LI |
796 | P9_DPRINTK(P9_DEBUG_VFS, "name %s\n", dentry->d_name.name); |
797 | err = 0; | |
6a3124a3 | 798 | v9ses = v9fs_inode2v9ses(dir); |
6a3124a3 | 799 | perm = unixmode2p9mode(v9ses, mode | S_IFDIR); |
bd238fb4 LI |
800 | fid = v9fs_create(v9ses, dir, dentry, NULL, perm, P9_OREAD); |
801 | if (IS_ERR(fid)) { | |
802 | err = PTR_ERR(fid); | |
803 | fid = NULL; | |
d28c61f0 | 804 | } else { |
b271ec47 | 805 | inc_nlink(dir); |
d28c61f0 AK |
806 | v9fs_invalidate_inode_attr(dir); |
807 | } | |
6a3124a3 | 808 | |
bd238fb4 LI |
809 | if (fid) |
810 | p9_client_clunk(fid); | |
6a3124a3 | 811 | |
6a3124a3 | 812 | return err; |
2bad8471 EVH |
813 | } |
814 | ||
815 | /** | |
816 | * v9fs_vfs_lookup - VFS lookup hook to "walk" to a new inode | |
817 | * @dir: inode that is being walked from | |
818 | * @dentry: dentry that is being walked to? | |
819 | * @nameidata: path data | |
820 | * | |
821 | */ | |
822 | ||
53c06f4e | 823 | struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry, |
2bad8471 EVH |
824 | struct nameidata *nameidata) |
825 | { | |
73f50717 | 826 | struct dentry *res; |
2bad8471 EVH |
827 | struct super_block *sb; |
828 | struct v9fs_session_info *v9ses; | |
bd238fb4 | 829 | struct p9_fid *dfid, *fid; |
2bad8471 | 830 | struct inode *inode; |
bd238fb4 | 831 | char *name; |
2bad8471 EVH |
832 | int result = 0; |
833 | ||
bd238fb4 | 834 | P9_DPRINTK(P9_DEBUG_VFS, "dir: %p dentry: (%s) %p nameidata: %p\n", |
731805b4 | 835 | dir, dentry->d_name.name, dentry, nameidata); |
2bad8471 | 836 | |
11e9b49b SK |
837 | if (dentry->d_name.len > NAME_MAX) |
838 | return ERR_PTR(-ENAMETOOLONG); | |
839 | ||
2bad8471 EVH |
840 | sb = dir->i_sb; |
841 | v9ses = v9fs_inode2v9ses(dir); | |
a534c8d1 | 842 | /* We can walk d_parent because we hold the dir->i_mutex */ |
bd238fb4 LI |
843 | dfid = v9fs_fid_lookup(dentry->d_parent); |
844 | if (IS_ERR(dfid)) | |
e231c2ee | 845 | return ERR_CAST(dfid); |
bd238fb4 LI |
846 | |
847 | name = (char *) dentry->d_name.name; | |
848 | fid = p9_client_walk(dfid, 1, &name, 1); | |
849 | if (IS_ERR(fid)) { | |
850 | result = PTR_ERR(fid); | |
2bad8471 | 851 | if (result == -ENOENT) { |
85e0df24 AK |
852 | inode = NULL; |
853 | goto inst_out; | |
2bad8471 | 854 | } |
2bad8471 | 855 | |
bd238fb4 | 856 | return ERR_PTR(result); |
2bad8471 | 857 | } |
73f50717 AK |
858 | /* |
859 | * Make sure we don't use a wrong inode due to parallel | |
860 | * unlink. For cached mode create calls request for new | |
861 | * inode. But with cache disabled, lookup should do this. | |
862 | */ | |
863 | if (v9ses->cache) | |
864 | inode = v9fs_get_inode_from_fid(v9ses, fid, dir->i_sb); | |
865 | else | |
866 | inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb); | |
bd238fb4 LI |
867 | if (IS_ERR(inode)) { |
868 | result = PTR_ERR(inode); | |
869 | inode = NULL; | |
870 | goto error; | |
2bad8471 | 871 | } |
bd238fb4 | 872 | result = v9fs_fid_add(dentry, fid); |
6a3124a3 | 873 | if (result < 0) |
9856af8b | 874 | goto error_iput; |
85e0df24 | 875 | inst_out: |
73f50717 AK |
876 | /* |
877 | * If we had a rename on the server and a parallel lookup | |
878 | * for the new name, then make sure we instantiate with | |
879 | * the new name. ie look up for a/b, while on server somebody | |
880 | * moved b under k and client parallely did a lookup for | |
881 | * k/b. | |
882 | */ | |
883 | res = d_materialise_unique(dentry, inode); | |
884 | if (!IS_ERR(res)) | |
885 | return res; | |
886 | result = PTR_ERR(res); | |
9856af8b AK |
887 | error_iput: |
888 | iput(inode); | |
bd238fb4 | 889 | error: |
62aa528e | 890 | p9_client_clunk(fid); |
da977b2c | 891 | |
2bad8471 EVH |
892 | return ERR_PTR(result); |
893 | } | |
894 | ||
895 | /** | |
896 | * v9fs_vfs_unlink - VFS unlink hook to delete an inode | |
897 | * @i: inode that is being unlinked | |
73c592b9 | 898 | * @d: dentry that is being unlinked |
2bad8471 EVH |
899 | * |
900 | */ | |
901 | ||
53c06f4e | 902 | int v9fs_vfs_unlink(struct inode *i, struct dentry *d) |
2bad8471 EVH |
903 | { |
904 | return v9fs_remove(i, d, 0); | |
905 | } | |
906 | ||
907 | /** | |
908 | * v9fs_vfs_rmdir - VFS unlink hook to delete a directory | |
909 | * @i: inode that is being unlinked | |
73c592b9 | 910 | * @d: dentry that is being unlinked |
2bad8471 EVH |
911 | * |
912 | */ | |
913 | ||
53c06f4e | 914 | int v9fs_vfs_rmdir(struct inode *i, struct dentry *d) |
2bad8471 | 915 | { |
48e370ff | 916 | return v9fs_remove(i, d, AT_REMOVEDIR); |
2bad8471 EVH |
917 | } |
918 | ||
919 | /** | |
920 | * v9fs_vfs_rename - VFS hook to rename an inode | |
921 | * @old_dir: old dir inode | |
922 | * @old_dentry: old dentry | |
923 | * @new_dir: new dir inode | |
924 | * @new_dentry: new dentry | |
925 | * | |
926 | */ | |
927 | ||
53c06f4e | 928 | int |
2bad8471 EVH |
929 | v9fs_vfs_rename(struct inode *old_dir, struct dentry *old_dentry, |
930 | struct inode *new_dir, struct dentry *new_dentry) | |
931 | { | |
d28c61f0 | 932 | int retval; |
bd238fb4 | 933 | struct inode *old_inode; |
b271ec47 | 934 | struct inode *new_inode; |
bd238fb4 LI |
935 | struct v9fs_session_info *v9ses; |
936 | struct p9_fid *oldfid; | |
937 | struct p9_fid *olddirfid; | |
938 | struct p9_fid *newdirfid; | |
939 | struct p9_wstat wstat; | |
2bad8471 | 940 | |
bd238fb4 LI |
941 | P9_DPRINTK(P9_DEBUG_VFS, "\n"); |
942 | retval = 0; | |
943 | old_inode = old_dentry->d_inode; | |
b271ec47 | 944 | new_inode = new_dentry->d_inode; |
bd238fb4 LI |
945 | v9ses = v9fs_inode2v9ses(old_inode); |
946 | oldfid = v9fs_fid_lookup(old_dentry); | |
ba17674f | 947 | if (IS_ERR(oldfid)) |
da977b2c EVH |
948 | return PTR_ERR(oldfid); |
949 | ||
950 | olddirfid = v9fs_fid_clone(old_dentry->d_parent); | |
ba17674f | 951 | if (IS_ERR(olddirfid)) { |
da977b2c | 952 | retval = PTR_ERR(olddirfid); |
bd238fb4 | 953 | goto done; |
da977b2c EVH |
954 | } |
955 | ||
956 | newdirfid = v9fs_fid_clone(new_dentry->d_parent); | |
ba17674f | 957 | if (IS_ERR(newdirfid)) { |
da977b2c | 958 | retval = PTR_ERR(newdirfid); |
bd238fb4 | 959 | goto clunk_olddir; |
2bad8471 EVH |
960 | } |
961 | ||
a534c8d1 | 962 | down_write(&v9ses->rename_sem); |
4681dbda | 963 | if (v9fs_proto_dotl(v9ses)) { |
9e8fb38e AK |
964 | retval = p9_client_renameat(olddirfid, old_dentry->d_name.name, |
965 | newdirfid, new_dentry->d_name.name); | |
966 | if (retval == -EOPNOTSUPP) | |
967 | retval = p9_client_rename(oldfid, newdirfid, | |
968 | new_dentry->d_name.name); | |
969 | if (retval != -EOPNOTSUPP) | |
4681dbda SK |
970 | goto clunk_newdir; |
971 | } | |
a534c8d1 AK |
972 | if (old_dentry->d_parent != new_dentry->d_parent) { |
973 | /* | |
974 | * 9P .u can only handle file rename in the same directory | |
975 | */ | |
4681dbda | 976 | |
bd238fb4 LI |
977 | P9_DPRINTK(P9_DEBUG_ERROR, |
978 | "old dir and new dir are different\n"); | |
621997cd | 979 | retval = -EXDEV; |
bd238fb4 | 980 | goto clunk_newdir; |
2bad8471 | 981 | } |
531b1094 | 982 | v9fs_blank_wstat(&wstat); |
ba17674f | 983 | wstat.muid = v9ses->uname; |
531b1094 | 984 | wstat.name = (char *) new_dentry->d_name.name; |
bd238fb4 | 985 | retval = p9_client_wstat(oldfid, &wstat); |
2bad8471 | 986 | |
bd238fb4 | 987 | clunk_newdir: |
b271ec47 AK |
988 | if (!retval) { |
989 | if (new_inode) { | |
990 | if (S_ISDIR(new_inode->i_mode)) | |
991 | clear_nlink(new_inode); | |
992 | else | |
993 | drop_nlink(new_inode); | |
994 | } | |
995 | if (S_ISDIR(old_inode->i_mode)) { | |
996 | if (!new_inode) | |
997 | inc_nlink(new_dir); | |
998 | drop_nlink(old_dir); | |
999 | } | |
3bc86de3 | 1000 | v9fs_invalidate_inode_attr(old_inode); |
d28c61f0 AK |
1001 | v9fs_invalidate_inode_attr(old_dir); |
1002 | v9fs_invalidate_inode_attr(new_dir); | |
3bc86de3 | 1003 | |
a534c8d1 AK |
1004 | /* successful rename */ |
1005 | d_move(old_dentry, new_dentry); | |
b271ec47 | 1006 | } |
a534c8d1 | 1007 | up_write(&v9ses->rename_sem); |
22150c4f | 1008 | p9_client_clunk(newdirfid); |
2bad8471 | 1009 | |
bd238fb4 | 1010 | clunk_olddir: |
22150c4f | 1011 | p9_client_clunk(olddirfid); |
da977b2c | 1012 | |
bd238fb4 | 1013 | done: |
2bad8471 EVH |
1014 | return retval; |
1015 | } | |
1016 | ||
1017 | /** | |
943ffb58 | 1018 | * v9fs_vfs_getattr - retrieve file metadata |
ee443996 EVH |
1019 | * @mnt: mount information |
1020 | * @dentry: file to get attributes on | |
1021 | * @stat: metadata structure to populate | |
2bad8471 EVH |
1022 | * |
1023 | */ | |
1024 | ||
1025 | static int | |
1026 | v9fs_vfs_getattr(struct vfsmount *mnt, struct dentry *dentry, | |
1027 | struct kstat *stat) | |
1028 | { | |
bd238fb4 LI |
1029 | int err; |
1030 | struct v9fs_session_info *v9ses; | |
1031 | struct p9_fid *fid; | |
51a87c55 | 1032 | struct p9_wstat *st; |
bd238fb4 LI |
1033 | |
1034 | P9_DPRINTK(P9_DEBUG_VFS, "dentry: %p\n", dentry); | |
1035 | err = -EPERM; | |
42869c8a | 1036 | v9ses = v9fs_dentry2v9ses(dentry); |
a1211908 AK |
1037 | if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) { |
1038 | generic_fillattr(dentry->d_inode, stat); | |
1039 | return 0; | |
1040 | } | |
bd238fb4 LI |
1041 | fid = v9fs_fid_lookup(dentry); |
1042 | if (IS_ERR(fid)) | |
da977b2c | 1043 | return PTR_ERR(fid); |
2bad8471 | 1044 | |
bd238fb4 LI |
1045 | st = p9_client_stat(fid); |
1046 | if (IS_ERR(st)) | |
1047 | return PTR_ERR(st); | |
2bad8471 | 1048 | |
bd238fb4 | 1049 | v9fs_stat2inode(st, dentry->d_inode, dentry->d_inode->i_sb); |
45089142 | 1050 | generic_fillattr(dentry->d_inode, stat); |
2bad8471 | 1051 | |
62b2be59 | 1052 | p9stat_free(st); |
bd238fb4 LI |
1053 | kfree(st); |
1054 | return 0; | |
2bad8471 EVH |
1055 | } |
1056 | ||
1057 | /** | |
1058 | * v9fs_vfs_setattr - set file metadata | |
1059 | * @dentry: file whose metadata to set | |
1060 | * @iattr: metadata assignment structure | |
1061 | * | |
1062 | */ | |
1063 | ||
1064 | static int v9fs_vfs_setattr(struct dentry *dentry, struct iattr *iattr) | |
1065 | { | |
bd238fb4 LI |
1066 | int retval; |
1067 | struct v9fs_session_info *v9ses; | |
1068 | struct p9_fid *fid; | |
1069 | struct p9_wstat wstat; | |
2bad8471 | 1070 | |
bd238fb4 | 1071 | P9_DPRINTK(P9_DEBUG_VFS, "\n"); |
059c138b AK |
1072 | retval = inode_change_ok(dentry->d_inode, iattr); |
1073 | if (retval) | |
1074 | return retval; | |
1075 | ||
bd238fb4 | 1076 | retval = -EPERM; |
42869c8a | 1077 | v9ses = v9fs_dentry2v9ses(dentry); |
bd238fb4 | 1078 | fid = v9fs_fid_lookup(dentry); |
da977b2c EVH |
1079 | if(IS_ERR(fid)) |
1080 | return PTR_ERR(fid); | |
2bad8471 | 1081 | |
531b1094 | 1082 | v9fs_blank_wstat(&wstat); |
2bad8471 | 1083 | if (iattr->ia_valid & ATTR_MODE) |
531b1094 | 1084 | wstat.mode = unixmode2p9mode(v9ses, iattr->ia_mode); |
2bad8471 EVH |
1085 | |
1086 | if (iattr->ia_valid & ATTR_MTIME) | |
531b1094 | 1087 | wstat.mtime = iattr->ia_mtime.tv_sec; |
2bad8471 EVH |
1088 | |
1089 | if (iattr->ia_valid & ATTR_ATIME) | |
531b1094 | 1090 | wstat.atime = iattr->ia_atime.tv_sec; |
2bad8471 EVH |
1091 | |
1092 | if (iattr->ia_valid & ATTR_SIZE) | |
531b1094 | 1093 | wstat.length = iattr->ia_size; |
2bad8471 | 1094 | |
dd6102fb | 1095 | if (v9fs_proto_dotu(v9ses)) { |
531b1094 LI |
1096 | if (iattr->ia_valid & ATTR_UID) |
1097 | wstat.n_uid = iattr->ia_uid; | |
2bad8471 | 1098 | |
531b1094 LI |
1099 | if (iattr->ia_valid & ATTR_GID) |
1100 | wstat.n_gid = iattr->ia_gid; | |
2bad8471 | 1101 | } |
059c138b | 1102 | |
3dc5436a AK |
1103 | /* Write all dirty data */ |
1104 | if (S_ISREG(dentry->d_inode->i_mode)) | |
1105 | filemap_write_and_wait(dentry->d_inode->i_mapping); | |
1106 | ||
f10fc50f AK |
1107 | retval = p9_client_wstat(fid, &wstat); |
1108 | if (retval < 0) | |
1109 | return retval; | |
059c138b AK |
1110 | |
1111 | if ((iattr->ia_valid & ATTR_SIZE) && | |
1112 | iattr->ia_size != i_size_read(dentry->d_inode)) | |
1113 | truncate_setsize(dentry->d_inode, iattr->ia_size); | |
1114 | ||
f10fc50f | 1115 | v9fs_invalidate_inode_attr(dentry->d_inode); |
2bad8471 | 1116 | |
1025774c CH |
1117 | setattr_copy(dentry->d_inode, iattr); |
1118 | mark_inode_dirty(dentry->d_inode); | |
1119 | return 0; | |
2bad8471 EVH |
1120 | } |
1121 | ||
1122 | /** | |
531b1094 LI |
1123 | * v9fs_stat2inode - populate an inode structure with mistat info |
1124 | * @stat: Plan 9 metadata (mistat) structure | |
2bad8471 EVH |
1125 | * @inode: inode to populate |
1126 | * @sb: superblock of filesystem | |
1127 | * | |
1128 | */ | |
1129 | ||
1130 | void | |
51a87c55 | 1131 | v9fs_stat2inode(struct p9_wstat *stat, struct inode *inode, |
531b1094 | 1132 | struct super_block *sb) |
2bad8471 | 1133 | { |
45089142 | 1134 | mode_t mode; |
531b1094 | 1135 | char ext[32]; |
5717144a AK |
1136 | char tag_name[14]; |
1137 | unsigned int i_nlink; | |
2bad8471 | 1138 | struct v9fs_session_info *v9ses = sb->s_fs_info; |
b3cbea03 | 1139 | struct v9fs_inode *v9inode = V9FS_I(inode); |
2bad8471 EVH |
1140 | |
1141 | inode->i_nlink = 1; | |
1142 | ||
531b1094 LI |
1143 | inode->i_atime.tv_sec = stat->atime; |
1144 | inode->i_mtime.tv_sec = stat->mtime; | |
1145 | inode->i_ctime.tv_sec = stat->mtime; | |
2bad8471 | 1146 | |
bd32b82d LI |
1147 | inode->i_uid = v9ses->dfltuid; |
1148 | inode->i_gid = v9ses->dfltgid; | |
2bad8471 | 1149 | |
dd6102fb | 1150 | if (v9fs_proto_dotu(v9ses)) { |
531b1094 LI |
1151 | inode->i_uid = stat->n_uid; |
1152 | inode->i_gid = stat->n_gid; | |
2bad8471 | 1153 | } |
5717144a AK |
1154 | if ((S_ISREG(inode->i_mode)) || (S_ISDIR(inode->i_mode))) { |
1155 | if (v9fs_proto_dotu(v9ses) && (stat->extension[0] != '\0')) { | |
1156 | /* | |
1157 | * Hadlink support got added later to | |
1158 | * to the .u extension. So there can be | |
1159 | * server out there that doesn't support | |
1160 | * this even with .u extension. So check | |
1161 | * for non NULL stat->extension | |
1162 | */ | |
1163 | strncpy(ext, stat->extension, sizeof(ext)); | |
1164 | /* HARDLINKCOUNT %u */ | |
1165 | sscanf(ext, "%13s %u", tag_name, &i_nlink); | |
1166 | if (!strncmp(tag_name, "HARDLINKCOUNT", 13)) | |
1167 | inode->i_nlink = i_nlink; | |
1168 | } | |
1169 | } | |
45089142 AK |
1170 | mode = stat->mode & S_IALLUGO; |
1171 | mode |= inode->i_mode & ~S_IALLUGO; | |
1172 | inode->i_mode = mode; | |
7549ae3e | 1173 | i_size_write(inode, stat->length); |
2bad8471 | 1174 | |
bd238fb4 | 1175 | /* not real number of blocks, but 512 byte ones ... */ |
7549ae3e | 1176 | inode->i_blocks = (i_size_read(inode) + 512 - 1) >> 9; |
b3cbea03 | 1177 | v9inode->cache_validity &= ~V9FS_INO_INVALID_ATTR; |
2bad8471 EVH |
1178 | } |
1179 | ||
1180 | /** | |
1181 | * v9fs_qid2ino - convert qid into inode number | |
1182 | * @qid: qid to hash | |
1183 | * | |
1184 | * BUG: potential for inode number collisions? | |
1185 | */ | |
1186 | ||
bd238fb4 | 1187 | ino_t v9fs_qid2ino(struct p9_qid *qid) |
2bad8471 EVH |
1188 | { |
1189 | u64 path = qid->path + 2; | |
1190 | ino_t i = 0; | |
1191 | ||
1192 | if (sizeof(ino_t) == sizeof(path)) | |
1193 | memcpy(&i, &path, sizeof(ino_t)); | |
1194 | else | |
1195 | i = (ino_t) (path ^ (path >> 32)); | |
1196 | ||
1197 | return i; | |
1198 | } | |
1199 | ||
2bad8471 EVH |
1200 | /** |
1201 | * v9fs_readlink - read a symlink's location (internal version) | |
1202 | * @dentry: dentry for symlink | |
73c592b9 | 1203 | * @buffer: buffer to load symlink location into |
2bad8471 EVH |
1204 | * @buflen: length of buffer |
1205 | * | |
1206 | */ | |
1207 | ||
1208 | static int v9fs_readlink(struct dentry *dentry, char *buffer, int buflen) | |
1209 | { | |
bd238fb4 | 1210 | int retval; |
2bad8471 | 1211 | |
bd238fb4 LI |
1212 | struct v9fs_session_info *v9ses; |
1213 | struct p9_fid *fid; | |
51a87c55 | 1214 | struct p9_wstat *st; |
2bad8471 | 1215 | |
bd238fb4 LI |
1216 | P9_DPRINTK(P9_DEBUG_VFS, " %s\n", dentry->d_name.name); |
1217 | retval = -EPERM; | |
42869c8a | 1218 | v9ses = v9fs_dentry2v9ses(dentry); |
bd238fb4 | 1219 | fid = v9fs_fid_lookup(dentry); |
ba17674f | 1220 | if (IS_ERR(fid)) |
da977b2c | 1221 | return PTR_ERR(fid); |
2bad8471 | 1222 | |
329176cc | 1223 | if (!v9fs_proto_dotu(v9ses)) |
bd238fb4 | 1224 | return -EBADF; |
2bad8471 | 1225 | |
bd238fb4 LI |
1226 | st = p9_client_stat(fid); |
1227 | if (IS_ERR(st)) | |
1228 | return PTR_ERR(st); | |
2bad8471 | 1229 | |
bd238fb4 | 1230 | if (!(st->mode & P9_DMSYMLINK)) { |
2bad8471 | 1231 | retval = -EINVAL; |
bd238fb4 | 1232 | goto done; |
2bad8471 EVH |
1233 | } |
1234 | ||
1235 | /* copy extension buffer into buffer */ | |
51a87c55 | 1236 | strncpy(buffer, st->extension, buflen); |
2bad8471 | 1237 | |
bd238fb4 | 1238 | P9_DPRINTK(P9_DEBUG_VFS, |
51a87c55 | 1239 | "%s -> %s (%s)\n", dentry->d_name.name, st->extension, buffer); |
2bad8471 | 1240 | |
2511cd0b | 1241 | retval = strnlen(buffer, buflen); |
bd238fb4 | 1242 | done: |
62b2be59 | 1243 | p9stat_free(st); |
bd238fb4 | 1244 | kfree(st); |
2bad8471 EVH |
1245 | return retval; |
1246 | } | |
1247 | ||
2bad8471 EVH |
1248 | /** |
1249 | * v9fs_vfs_follow_link - follow a symlink path | |
1250 | * @dentry: dentry for symlink | |
1251 | * @nd: nameidata | |
1252 | * | |
1253 | */ | |
1254 | ||
1255 | static void *v9fs_vfs_follow_link(struct dentry *dentry, struct nameidata *nd) | |
1256 | { | |
1257 | int len = 0; | |
1258 | char *link = __getname(); | |
1259 | ||
bd238fb4 | 1260 | P9_DPRINTK(P9_DEBUG_VFS, "%s n", dentry->d_name.name); |
2bad8471 EVH |
1261 | |
1262 | if (!link) | |
1263 | link = ERR_PTR(-ENOMEM); | |
1264 | else { | |
16cce6d2 | 1265 | len = v9fs_readlink(dentry, link, PATH_MAX); |
2bad8471 EVH |
1266 | |
1267 | if (len < 0) { | |
ce44eeb6 | 1268 | __putname(link); |
2bad8471 EVH |
1269 | link = ERR_PTR(len); |
1270 | } else | |
2511cd0b | 1271 | link[min(len, PATH_MAX-1)] = 0; |
2bad8471 EVH |
1272 | } |
1273 | nd_set_link(nd, link); | |
1274 | ||
1275 | return NULL; | |
1276 | } | |
1277 | ||
1278 | /** | |
1279 | * v9fs_vfs_put_link - release a symlink path | |
1280 | * @dentry: dentry for symlink | |
1281 | * @nd: nameidata | |
ee443996 | 1282 | * @p: unused |
2bad8471 EVH |
1283 | * |
1284 | */ | |
1285 | ||
53c06f4e | 1286 | void |
ee443996 | 1287 | v9fs_vfs_put_link(struct dentry *dentry, struct nameidata *nd, void *p) |
2bad8471 EVH |
1288 | { |
1289 | char *s = nd_get_link(nd); | |
1290 | ||
6ff23207 DG |
1291 | P9_DPRINTK(P9_DEBUG_VFS, " %s %s\n", dentry->d_name.name, |
1292 | IS_ERR(s) ? "<error>" : s); | |
2bad8471 | 1293 | if (!IS_ERR(s)) |
ce44eeb6 | 1294 | __putname(s); |
2bad8471 EVH |
1295 | } |
1296 | ||
ee443996 EVH |
1297 | /** |
1298 | * v9fs_vfs_mkspecial - create a special file | |
1299 | * @dir: inode to create special file in | |
1300 | * @dentry: dentry to create | |
1301 | * @mode: mode to create special file | |
1302 | * @extension: 9p2000.u format extension string representing special file | |
1303 | * | |
1304 | */ | |
1305 | ||
531b1094 LI |
1306 | static int v9fs_vfs_mkspecial(struct inode *dir, struct dentry *dentry, |
1307 | int mode, const char *extension) | |
2bad8471 | 1308 | { |
bd238fb4 | 1309 | u32 perm; |
bd238fb4 | 1310 | struct p9_fid *fid; |
d28c61f0 | 1311 | struct v9fs_session_info *v9ses; |
2bad8471 | 1312 | |
6a3124a3 | 1313 | v9ses = v9fs_inode2v9ses(dir); |
dd6102fb | 1314 | if (!v9fs_proto_dotu(v9ses)) { |
bd238fb4 | 1315 | P9_DPRINTK(P9_DEBUG_ERROR, "not extended\n"); |
6a3124a3 | 1316 | return -EPERM; |
2bad8471 EVH |
1317 | } |
1318 | ||
da977b2c | 1319 | perm = unixmode2p9mode(v9ses, mode); |
bd238fb4 LI |
1320 | fid = v9fs_create(v9ses, dir, dentry, (char *) extension, perm, |
1321 | P9_OREAD); | |
1322 | if (IS_ERR(fid)) | |
1323 | return PTR_ERR(fid); | |
da977b2c | 1324 | |
d28c61f0 | 1325 | v9fs_invalidate_inode_attr(dir); |
bd238fb4 | 1326 | p9_client_clunk(fid); |
6a3124a3 | 1327 | return 0; |
531b1094 LI |
1328 | } |
1329 | ||
1330 | /** | |
1331 | * v9fs_vfs_symlink - helper function to create symlinks | |
1332 | * @dir: directory inode containing symlink | |
1333 | * @dentry: dentry for symlink | |
1334 | * @symname: symlink data | |
1335 | * | |
ee443996 | 1336 | * See Also: 9P2000.u RFC for more information |
531b1094 LI |
1337 | * |
1338 | */ | |
1339 | ||
1340 | static int | |
1341 | v9fs_vfs_symlink(struct inode *dir, struct dentry *dentry, const char *symname) | |
1342 | { | |
bd238fb4 LI |
1343 | P9_DPRINTK(P9_DEBUG_VFS, " %lu,%s,%s\n", dir->i_ino, |
1344 | dentry->d_name.name, symname); | |
531b1094 LI |
1345 | |
1346 | return v9fs_vfs_mkspecial(dir, dentry, S_IFLNK, symname); | |
1347 | } | |
1348 | ||
1349 | /** | |
1350 | * v9fs_vfs_link - create a hardlink | |
1351 | * @old_dentry: dentry for file to link to | |
1352 | * @dir: inode destination for new link | |
1353 | * @dentry: dentry for link | |
1354 | * | |
1355 | */ | |
1356 | ||
531b1094 LI |
1357 | static int |
1358 | v9fs_vfs_link(struct dentry *old_dentry, struct inode *dir, | |
1359 | struct dentry *dentry) | |
1360 | { | |
1361 | int retval; | |
531b1094 | 1362 | char *name; |
d28c61f0 | 1363 | struct p9_fid *oldfid; |
531b1094 | 1364 | |
bd238fb4 LI |
1365 | P9_DPRINTK(P9_DEBUG_VFS, |
1366 | " %lu,%s,%s\n", dir->i_ino, dentry->d_name.name, | |
531b1094 LI |
1367 | old_dentry->d_name.name); |
1368 | ||
da977b2c | 1369 | oldfid = v9fs_fid_clone(old_dentry); |
ba17674f | 1370 | if (IS_ERR(oldfid)) |
da977b2c | 1371 | return PTR_ERR(oldfid); |
531b1094 LI |
1372 | |
1373 | name = __getname(); | |
da977b2c EVH |
1374 | if (unlikely(!name)) { |
1375 | retval = -ENOMEM; | |
1376 | goto clunk_fid; | |
1377 | } | |
0710d36a | 1378 | |
16cce6d2 | 1379 | sprintf(name, "%d\n", oldfid->fid); |
bd238fb4 | 1380 | retval = v9fs_vfs_mkspecial(dir, dentry, P9_DMLINK, name); |
531b1094 | 1381 | __putname(name); |
c06c066a AK |
1382 | if (!retval) { |
1383 | v9fs_refresh_inode(oldfid, old_dentry->d_inode); | |
d28c61f0 | 1384 | v9fs_invalidate_inode_attr(dir); |
c06c066a | 1385 | } |
da977b2c | 1386 | clunk_fid: |
bd238fb4 | 1387 | p9_client_clunk(oldfid); |
2bad8471 EVH |
1388 | return retval; |
1389 | } | |
1390 | ||
1391 | /** | |
1392 | * v9fs_vfs_mknod - create a special file | |
1393 | * @dir: inode destination for new link | |
1394 | * @dentry: dentry for file | |
1395 | * @mode: mode for creation | |
ee443996 | 1396 | * @rdev: device associated with special file |
2bad8471 EVH |
1397 | * |
1398 | */ | |
1399 | ||
1400 | static int | |
1401 | v9fs_vfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t rdev) | |
1402 | { | |
531b1094 LI |
1403 | int retval; |
1404 | char *name; | |
2bad8471 | 1405 | |
bd238fb4 LI |
1406 | P9_DPRINTK(P9_DEBUG_VFS, |
1407 | " %lu,%s mode: %x MAJOR: %u MINOR: %u\n", dir->i_ino, | |
2bad8471 EVH |
1408 | dentry->d_name.name, mode, MAJOR(rdev), MINOR(rdev)); |
1409 | ||
531b1094 LI |
1410 | if (!new_valid_dev(rdev)) |
1411 | return -EINVAL; | |
2bad8471 | 1412 | |
531b1094 | 1413 | name = __getname(); |
c0291a05 ET |
1414 | if (!name) |
1415 | return -ENOMEM; | |
2bad8471 EVH |
1416 | /* build extension */ |
1417 | if (S_ISBLK(mode)) | |
531b1094 | 1418 | sprintf(name, "b %u %u", MAJOR(rdev), MINOR(rdev)); |
2bad8471 | 1419 | else if (S_ISCHR(mode)) |
531b1094 | 1420 | sprintf(name, "c %u %u", MAJOR(rdev), MINOR(rdev)); |
73c592b9 | 1421 | else if (S_ISFIFO(mode)) |
531b1094 | 1422 | *name = 0; |
75cc5c9b VJ |
1423 | else if (S_ISSOCK(mode)) |
1424 | *name = 0; | |
2bad8471 | 1425 | else { |
531b1094 LI |
1426 | __putname(name); |
1427 | return -EINVAL; | |
2bad8471 EVH |
1428 | } |
1429 | ||
531b1094 LI |
1430 | retval = v9fs_vfs_mkspecial(dir, dentry, mode, name); |
1431 | __putname(name); | |
2bad8471 EVH |
1432 | |
1433 | return retval; | |
1434 | } | |
1435 | ||
b3cbea03 AK |
1436 | int v9fs_refresh_inode(struct p9_fid *fid, struct inode *inode) |
1437 | { | |
45089142 AK |
1438 | int umode; |
1439 | dev_t rdev; | |
b3cbea03 AK |
1440 | loff_t i_size; |
1441 | struct p9_wstat *st; | |
1442 | struct v9fs_session_info *v9ses; | |
1443 | ||
1444 | v9ses = v9fs_inode2v9ses(inode); | |
1445 | st = p9_client_stat(fid); | |
1446 | if (IS_ERR(st)) | |
1447 | return PTR_ERR(st); | |
45089142 AK |
1448 | /* |
1449 | * Don't update inode if the file type is different | |
1450 | */ | |
1451 | umode = p9mode2unixmode(v9ses, st, &rdev); | |
1452 | if ((inode->i_mode & S_IFMT) != (umode & S_IFMT)) | |
1453 | goto out; | |
b3cbea03 AK |
1454 | |
1455 | spin_lock(&inode->i_lock); | |
1456 | /* | |
1457 | * We don't want to refresh inode->i_size, | |
1458 | * because we may have cached data | |
1459 | */ | |
1460 | i_size = inode->i_size; | |
1461 | v9fs_stat2inode(st, inode, inode->i_sb); | |
1462 | if (v9ses->cache) | |
1463 | inode->i_size = i_size; | |
1464 | spin_unlock(&inode->i_lock); | |
45089142 | 1465 | out: |
b3cbea03 AK |
1466 | p9stat_free(st); |
1467 | kfree(st); | |
1468 | return 0; | |
1469 | } | |
1470 | ||
9b6533c9 SK |
1471 | static const struct inode_operations v9fs_dir_inode_operations_dotu = { |
1472 | .create = v9fs_vfs_create, | |
1473 | .lookup = v9fs_vfs_lookup, | |
1474 | .symlink = v9fs_vfs_symlink, | |
50cc42ff | 1475 | .link = v9fs_vfs_link, |
9b6533c9 SK |
1476 | .unlink = v9fs_vfs_unlink, |
1477 | .mkdir = v9fs_vfs_mkdir, | |
1478 | .rmdir = v9fs_vfs_rmdir, | |
1d76e313 | 1479 | .mknod = v9fs_vfs_mknod, |
9b6533c9 SK |
1480 | .rename = v9fs_vfs_rename, |
1481 | .getattr = v9fs_vfs_getattr, | |
1482 | .setattr = v9fs_vfs_setattr, | |
1483 | }; | |
1484 | ||
754661f1 | 1485 | static const struct inode_operations v9fs_dir_inode_operations = { |
b501611a EVH |
1486 | .create = v9fs_vfs_create, |
1487 | .lookup = v9fs_vfs_lookup, | |
1488 | .unlink = v9fs_vfs_unlink, | |
1489 | .mkdir = v9fs_vfs_mkdir, | |
1490 | .rmdir = v9fs_vfs_rmdir, | |
1491 | .mknod = v9fs_vfs_mknod, | |
1492 | .rename = v9fs_vfs_rename, | |
1493 | .getattr = v9fs_vfs_getattr, | |
1494 | .setattr = v9fs_vfs_setattr, | |
1495 | }; | |
1496 | ||
754661f1 | 1497 | static const struct inode_operations v9fs_file_inode_operations = { |
2bad8471 EVH |
1498 | .getattr = v9fs_vfs_getattr, |
1499 | .setattr = v9fs_vfs_setattr, | |
1500 | }; | |
1501 | ||
754661f1 | 1502 | static const struct inode_operations v9fs_symlink_inode_operations = { |
204f2f0e | 1503 | .readlink = generic_readlink, |
2bad8471 EVH |
1504 | .follow_link = v9fs_vfs_follow_link, |
1505 | .put_link = v9fs_vfs_put_link, | |
1506 | .getattr = v9fs_vfs_getattr, | |
1507 | .setattr = v9fs_vfs_setattr, | |
1508 | }; | |
9b6533c9 | 1509 |