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 | 253 | struct inode *inode = container_of(head, struct inode, i_rcu); |
a78ce05d | 254 | kmem_cache_free(v9fs_inode_cache, V9FS_I(inode)); |
60e78d2c | 255 | } |
fa0d7e3d NP |
256 | |
257 | void v9fs_destroy_inode(struct inode *inode) | |
258 | { | |
259 | call_rcu(&inode->i_rcu, v9fs_i_callback); | |
260 | } | |
60e78d2c | 261 | |
5ffc0cb3 | 262 | int v9fs_init_inode(struct v9fs_session_info *v9ses, |
45089142 | 263 | struct inode *inode, int mode, dev_t rdev) |
2bad8471 | 264 | { |
5ffc0cb3 | 265 | int err = 0; |
2bb54115 | 266 | |
217f206d | 267 | inode_init_owner(inode, NULL, mode); |
2bb54115 | 268 | inode->i_blocks = 0; |
45089142 | 269 | inode->i_rdev = rdev; |
2bb54115 AK |
270 | inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME; |
271 | inode->i_mapping->a_ops = &v9fs_addr_operations; | |
272 | ||
273 | switch (mode & S_IFMT) { | |
274 | case S_IFIFO: | |
275 | case S_IFBLK: | |
276 | case S_IFCHR: | |
277 | case S_IFSOCK: | |
4b43516a MK |
278 | if (v9fs_proto_dotl(v9ses)) { |
279 | inode->i_op = &v9fs_file_inode_operations_dotl; | |
4b43516a MK |
280 | } else if (v9fs_proto_dotu(v9ses)) { |
281 | inode->i_op = &v9fs_file_inode_operations; | |
4b43516a | 282 | } else { |
bd238fb4 | 283 | P9_DPRINTK(P9_DEBUG_ERROR, |
2bb54115 AK |
284 | "special files without extended mode\n"); |
285 | err = -EINVAL; | |
286 | goto error; | |
2bad8471 | 287 | } |
2bb54115 AK |
288 | init_special_inode(inode, inode->i_mode, inode->i_rdev); |
289 | break; | |
290 | case S_IFREG: | |
9b6533c9 SK |
291 | if (v9fs_proto_dotl(v9ses)) { |
292 | inode->i_op = &v9fs_file_inode_operations_dotl; | |
29236f4e AK |
293 | if (v9ses->cache) |
294 | inode->i_fop = | |
295 | &v9fs_cached_file_operations_dotl; | |
296 | else | |
297 | inode->i_fop = &v9fs_file_operations_dotl; | |
9b6533c9 SK |
298 | } else { |
299 | inode->i_op = &v9fs_file_inode_operations; | |
29236f4e AK |
300 | if (v9ses->cache) |
301 | inode->i_fop = &v9fs_cached_file_operations; | |
302 | else | |
303 | inode->i_fop = &v9fs_file_operations; | |
9b6533c9 SK |
304 | } |
305 | ||
2bb54115 AK |
306 | break; |
307 | case S_IFLNK: | |
9b6533c9 SK |
308 | if (!v9fs_proto_dotu(v9ses) && !v9fs_proto_dotl(v9ses)) { |
309 | P9_DPRINTK(P9_DEBUG_ERROR, "extended modes used with " | |
310 | "legacy protocol.\n"); | |
2bb54115 AK |
311 | err = -EINVAL; |
312 | goto error; | |
313 | } | |
9b6533c9 SK |
314 | |
315 | if (v9fs_proto_dotl(v9ses)) | |
316 | inode->i_op = &v9fs_symlink_inode_operations_dotl; | |
317 | else | |
318 | inode->i_op = &v9fs_symlink_inode_operations; | |
319 | ||
2bb54115 AK |
320 | break; |
321 | case S_IFDIR: | |
322 | inc_nlink(inode); | |
9b6533c9 SK |
323 | if (v9fs_proto_dotl(v9ses)) |
324 | inode->i_op = &v9fs_dir_inode_operations_dotl; | |
325 | else if (v9fs_proto_dotu(v9ses)) | |
326 | inode->i_op = &v9fs_dir_inode_operations_dotu; | |
2bb54115 AK |
327 | else |
328 | inode->i_op = &v9fs_dir_inode_operations; | |
9b6533c9 SK |
329 | |
330 | if (v9fs_proto_dotl(v9ses)) | |
331 | inode->i_fop = &v9fs_dir_operations_dotl; | |
332 | else | |
333 | inode->i_fop = &v9fs_dir_operations; | |
334 | ||
2bb54115 AK |
335 | break; |
336 | default: | |
337 | P9_DPRINTK(P9_DEBUG_ERROR, "BAD mode 0x%x S_IFMT 0x%x\n", | |
338 | mode, mode & S_IFMT); | |
339 | err = -EINVAL; | |
340 | goto error; | |
2bad8471 | 341 | } |
5ffc0cb3 AK |
342 | error: |
343 | return err; | |
2bb54115 | 344 | |
5ffc0cb3 | 345 | } |
2bb54115 | 346 | |
5ffc0cb3 AK |
347 | /** |
348 | * v9fs_get_inode - helper function to setup an inode | |
349 | * @sb: superblock | |
350 | * @mode: mode to setup inode with | |
351 | * | |
352 | */ | |
353 | ||
45089142 | 354 | struct inode *v9fs_get_inode(struct super_block *sb, int mode, dev_t rdev) |
5ffc0cb3 AK |
355 | { |
356 | int err; | |
357 | struct inode *inode; | |
358 | struct v9fs_session_info *v9ses = sb->s_fs_info; | |
359 | ||
360 | P9_DPRINTK(P9_DEBUG_VFS, "super block: %p mode: %o\n", sb, mode); | |
361 | ||
362 | inode = new_inode(sb); | |
363 | if (!inode) { | |
364 | P9_EPRINTK(KERN_WARNING, "Problem allocating inode\n"); | |
365 | return ERR_PTR(-ENOMEM); | |
366 | } | |
45089142 | 367 | err = v9fs_init_inode(v9ses, inode, mode, rdev); |
5ffc0cb3 AK |
368 | if (err) { |
369 | iput(inode); | |
370 | return ERR_PTR(err); | |
371 | } | |
372 | return inode; | |
2bad8471 EVH |
373 | } |
374 | ||
bd238fb4 | 375 | /* |
6a3124a3 LI |
376 | static struct v9fs_fid* |
377 | v9fs_clone_walk(struct v9fs_session_info *v9ses, u32 fid, struct dentry *dentry) | |
378 | { | |
379 | int err; | |
736c4b85 | 380 | int nfid; |
6a3124a3 LI |
381 | struct v9fs_fid *ret; |
382 | struct v9fs_fcall *fcall; | |
383 | ||
384 | nfid = v9fs_get_idpool(&v9ses->fidpool); | |
385 | if (nfid < 0) { | |
0b8dd177 | 386 | eprintk(KERN_WARNING, "no free fids available\n"); |
731805b4 | 387 | return ERR_PTR(-ENOSPC); |
0b8dd177 LI |
388 | } |
389 | ||
6a3124a3 LI |
390 | err = v9fs_t_walk(v9ses, fid, nfid, (char *) dentry->d_name.name, |
391 | &fcall); | |
392 | ||
393 | if (err < 0) { | |
41e5a6ac LI |
394 | if (fcall && fcall->id == RWALK) |
395 | goto clunk_fid; | |
396 | ||
6a3124a3 LI |
397 | PRINT_FCALL_ERROR("walk error", fcall); |
398 | v9fs_put_idpool(nfid, &v9ses->fidpool); | |
399 | goto error; | |
0b8dd177 | 400 | } |
6a3124a3 | 401 | |
3cf6429a LI |
402 | kfree(fcall); |
403 | fcall = NULL; | |
6a3124a3 LI |
404 | ret = v9fs_fid_create(v9ses, nfid); |
405 | if (!ret) { | |
406 | err = -ENOMEM; | |
407 | goto clunk_fid; | |
408 | } | |
0b8dd177 | 409 | |
6a3124a3 LI |
410 | err = v9fs_fid_insert(ret, dentry); |
411 | if (err < 0) { | |
412 | v9fs_fid_destroy(ret); | |
413 | goto clunk_fid; | |
0b8dd177 | 414 | } |
2bad8471 | 415 | |
6a3124a3 | 416 | return ret; |
2bad8471 | 417 | |
6a3124a3 LI |
418 | clunk_fid: |
419 | v9fs_t_clunk(v9ses, nfid); | |
2bad8471 | 420 | |
6a3124a3 LI |
421 | error: |
422 | kfree(fcall); | |
423 | return ERR_PTR(err); | |
424 | } | |
bd238fb4 | 425 | */ |
2bad8471 | 426 | |
60e78d2c AK |
427 | |
428 | /** | |
429 | * v9fs_clear_inode - release an inode | |
430 | * @inode: inode to release | |
431 | * | |
432 | */ | |
b57922d9 | 433 | void v9fs_evict_inode(struct inode *inode) |
60e78d2c | 434 | { |
6b39f6d2 AK |
435 | struct v9fs_inode *v9inode = V9FS_I(inode); |
436 | ||
b57922d9 AV |
437 | truncate_inode_pages(inode->i_mapping, 0); |
438 | end_writeback(inode); | |
60e78d2c AK |
439 | filemap_fdatawrite(inode->i_mapping); |
440 | ||
441 | #ifdef CONFIG_9P_FSCACHE | |
442 | v9fs_cache_inode_put_cookie(inode); | |
443 | #endif | |
6b39f6d2 AK |
444 | /* clunk the fid stashed in writeback_fid */ |
445 | if (v9inode->writeback_fid) { | |
446 | p9_client_clunk(v9inode->writeback_fid); | |
447 | v9inode->writeback_fid = NULL; | |
3cf387d7 | 448 | } |
60e78d2c AK |
449 | } |
450 | ||
fd2421f5 AK |
451 | static int v9fs_test_inode(struct inode *inode, void *data) |
452 | { | |
453 | int umode; | |
45089142 | 454 | dev_t rdev; |
fd2421f5 AK |
455 | struct v9fs_inode *v9inode = V9FS_I(inode); |
456 | struct p9_wstat *st = (struct p9_wstat *)data; | |
457 | struct v9fs_session_info *v9ses = v9fs_inode2v9ses(inode); | |
458 | ||
45089142 | 459 | umode = p9mode2unixmode(v9ses, st, &rdev); |
fd2421f5 AK |
460 | /* don't match inode of different type */ |
461 | if ((inode->i_mode & S_IFMT) != (umode & S_IFMT)) | |
462 | return 0; | |
463 | ||
464 | /* compare qid details */ | |
465 | if (memcmp(&v9inode->qid.version, | |
466 | &st->qid.version, sizeof(v9inode->qid.version))) | |
467 | return 0; | |
468 | ||
469 | if (v9inode->qid.type != st->qid.type) | |
470 | return 0; | |
471 | return 1; | |
472 | } | |
473 | ||
ed80fcfa AK |
474 | static int v9fs_test_new_inode(struct inode *inode, void *data) |
475 | { | |
476 | return 0; | |
477 | } | |
478 | ||
fd2421f5 AK |
479 | static int v9fs_set_inode(struct inode *inode, void *data) |
480 | { | |
481 | struct v9fs_inode *v9inode = V9FS_I(inode); | |
482 | struct p9_wstat *st = (struct p9_wstat *)data; | |
483 | ||
484 | memcpy(&v9inode->qid, &st->qid, sizeof(st->qid)); | |
485 | return 0; | |
486 | } | |
487 | ||
5ffc0cb3 AK |
488 | static struct inode *v9fs_qid_iget(struct super_block *sb, |
489 | struct p9_qid *qid, | |
ed80fcfa AK |
490 | struct p9_wstat *st, |
491 | int new) | |
6a3124a3 | 492 | { |
45089142 | 493 | dev_t rdev; |
5ffc0cb3 AK |
494 | int retval, umode; |
495 | unsigned long i_ino; | |
496 | struct inode *inode; | |
497 | struct v9fs_session_info *v9ses = sb->s_fs_info; | |
ed80fcfa AK |
498 | int (*test)(struct inode *, void *); |
499 | ||
500 | if (new) | |
501 | test = v9fs_test_new_inode; | |
502 | else | |
503 | test = v9fs_test_inode; | |
2bad8471 | 504 | |
5ffc0cb3 | 505 | i_ino = v9fs_qid2ino(qid); |
ed80fcfa | 506 | inode = iget5_locked(sb, i_ino, test, v9fs_set_inode, st); |
5ffc0cb3 AK |
507 | if (!inode) |
508 | return ERR_PTR(-ENOMEM); | |
509 | if (!(inode->i_state & I_NEW)) | |
510 | return inode; | |
511 | /* | |
512 | * initialize the inode with the stat info | |
513 | * FIXME!! we may need support for stale inodes | |
514 | * later. | |
515 | */ | |
fd2421f5 | 516 | inode->i_ino = i_ino; |
45089142 AK |
517 | umode = p9mode2unixmode(v9ses, st, &rdev); |
518 | retval = v9fs_init_inode(v9ses, inode, umode, rdev); | |
5ffc0cb3 | 519 | if (retval) |
6a3124a3 | 520 | goto error; |
60e78d2c | 521 | |
5ffc0cb3 | 522 | v9fs_stat2inode(st, inode, sb); |
60e78d2c | 523 | #ifdef CONFIG_9P_FSCACHE |
5ffc0cb3 | 524 | v9fs_cache_inode_get_cookie(inode); |
60e78d2c | 525 | #endif |
5ffc0cb3 AK |
526 | unlock_new_inode(inode); |
527 | return inode; | |
6a3124a3 | 528 | error: |
5ffc0cb3 AK |
529 | unlock_new_inode(inode); |
530 | iput(inode); | |
531 | return ERR_PTR(retval); | |
532 | ||
533 | } | |
534 | ||
535 | struct inode * | |
a78ce05d | 536 | v9fs_inode_from_fid(struct v9fs_session_info *v9ses, struct p9_fid *fid, |
ed80fcfa | 537 | struct super_block *sb, int new) |
5ffc0cb3 AK |
538 | { |
539 | struct p9_wstat *st; | |
540 | struct inode *inode = NULL; | |
541 | ||
542 | st = p9_client_stat(fid); | |
543 | if (IS_ERR(st)) | |
544 | return ERR_CAST(st); | |
545 | ||
ed80fcfa | 546 | inode = v9fs_qid_iget(sb, &st->qid, st, new); |
02bc3567 | 547 | p9stat_free(st); |
bd238fb4 | 548 | kfree(st); |
5ffc0cb3 | 549 | return inode; |
2bad8471 EVH |
550 | } |
551 | ||
f88657ce AK |
552 | /** |
553 | * v9fs_at_to_dotl_flags- convert Linux specific AT flags to | |
554 | * plan 9 AT flag. | |
555 | * @flags: flags to convert | |
556 | */ | |
557 | static int v9fs_at_to_dotl_flags(int flags) | |
558 | { | |
559 | int rflags = 0; | |
560 | if (flags & AT_REMOVEDIR) | |
561 | rflags |= P9_DOTL_AT_REMOVEDIR; | |
562 | return rflags; | |
563 | } | |
564 | ||
2bad8471 EVH |
565 | /** |
566 | * v9fs_remove - helper function to remove files and directories | |
73c592b9 | 567 | * @dir: directory inode that is being deleted |
48e370ff | 568 | * @dentry: dentry that is being deleted |
73c592b9 | 569 | * @rmdir: removing a directory |
2bad8471 EVH |
570 | * |
571 | */ | |
572 | ||
48e370ff | 573 | static int v9fs_remove(struct inode *dir, struct dentry *dentry, int flags) |
2bad8471 | 574 | { |
48e370ff AK |
575 | struct inode *inode; |
576 | int retval = -EOPNOTSUPP; | |
577 | struct p9_fid *v9fid, *dfid; | |
578 | struct v9fs_session_info *v9ses; | |
2bad8471 | 579 | |
48e370ff AK |
580 | P9_DPRINTK(P9_DEBUG_VFS, "inode: %p dentry: %p rmdir: %x\n", |
581 | dir, dentry, flags); | |
2bad8471 | 582 | |
48e370ff AK |
583 | v9ses = v9fs_inode2v9ses(dir); |
584 | inode = dentry->d_inode; | |
585 | dfid = v9fs_fid_lookup(dentry->d_parent); | |
586 | if (IS_ERR(dfid)) { | |
587 | retval = PTR_ERR(dfid); | |
588 | P9_DPRINTK(P9_DEBUG_VFS, "fid lookup failed %d\n", retval); | |
589 | return retval; | |
590 | } | |
591 | if (v9fs_proto_dotl(v9ses)) | |
f88657ce AK |
592 | retval = p9_client_unlinkat(dfid, dentry->d_name.name, |
593 | v9fs_at_to_dotl_flags(flags)); | |
48e370ff AK |
594 | if (retval == -EOPNOTSUPP) { |
595 | /* Try the one based on path */ | |
596 | v9fid = v9fs_fid_clone(dentry); | |
597 | if (IS_ERR(v9fid)) | |
598 | return PTR_ERR(v9fid); | |
599 | retval = p9_client_remove(v9fid); | |
600 | } | |
b271ec47 AK |
601 | if (!retval) { |
602 | /* | |
603 | * directories on unlink should have zero | |
604 | * link count | |
605 | */ | |
48e370ff AK |
606 | if (flags & AT_REMOVEDIR) { |
607 | clear_nlink(inode); | |
b271ec47 AK |
608 | drop_nlink(dir); |
609 | } else | |
48e370ff | 610 | drop_nlink(inode); |
d28c61f0 | 611 | |
48e370ff | 612 | v9fs_invalidate_inode_attr(inode); |
d28c61f0 | 613 | v9fs_invalidate_inode_attr(dir); |
b271ec47 | 614 | } |
d994f405 | 615 | return retval; |
2bad8471 EVH |
616 | } |
617 | ||
618 | /** | |
bd238fb4 | 619 | * v9fs_create - Create a file |
ee443996 EVH |
620 | * @v9ses: session information |
621 | * @dir: directory that dentry is being created in | |
bd238fb4 | 622 | * @dentry: dentry that is being created |
0e15597e | 623 | * @extension: 9p2000.u extension string to support devices, etc. |
bd238fb4 LI |
624 | * @perm: create permissions |
625 | * @mode: open mode | |
2bad8471 EVH |
626 | * |
627 | */ | |
bd238fb4 LI |
628 | static struct p9_fid * |
629 | v9fs_create(struct v9fs_session_info *v9ses, struct inode *dir, | |
630 | struct dentry *dentry, char *extension, u32 perm, u8 mode) | |
2bad8471 | 631 | { |
6a3124a3 | 632 | int err; |
bd238fb4 LI |
633 | char *name; |
634 | struct p9_fid *dfid, *ofid, *fid; | |
6a3124a3 | 635 | struct inode *inode; |
6a3124a3 | 636 | |
51a87c55 EVH |
637 | P9_DPRINTK(P9_DEBUG_VFS, "name %s\n", dentry->d_name.name); |
638 | ||
bd238fb4 LI |
639 | err = 0; |
640 | ofid = NULL; | |
641 | fid = NULL; | |
642 | name = (char *) dentry->d_name.name; | |
6d27e64d | 643 | dfid = v9fs_fid_lookup(dentry->d_parent); |
ba17674f | 644 | if (IS_ERR(dfid)) { |
da977b2c | 645 | err = PTR_ERR(dfid); |
6d27e64d VJ |
646 | P9_DPRINTK(P9_DEBUG_VFS, "fid lookup failed %d\n", err); |
647 | return ERR_PTR(err); | |
da977b2c | 648 | } |
6a3124a3 | 649 | |
bd238fb4 LI |
650 | /* clone a fid to use for creation */ |
651 | ofid = p9_client_walk(dfid, 0, NULL, 1); | |
652 | if (IS_ERR(ofid)) { | |
653 | err = PTR_ERR(ofid); | |
51a87c55 | 654 | P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err); |
6d27e64d | 655 | return ERR_PTR(err); |
bd238fb4 | 656 | } |
6a3124a3 | 657 | |
bd238fb4 | 658 | err = p9_client_fcreate(ofid, name, perm, mode, extension); |
51a87c55 EVH |
659 | if (err < 0) { |
660 | P9_DPRINTK(P9_DEBUG_VFS, "p9_client_fcreate failed %d\n", err); | |
bd238fb4 | 661 | goto error; |
51a87c55 | 662 | } |
6a3124a3 | 663 | |
bd238fb4 | 664 | /* now walk from the parent so we can get unopened fid */ |
6d27e64d | 665 | fid = p9_client_walk(dfid, 1, &name, 1); |
bd238fb4 LI |
666 | if (IS_ERR(fid)) { |
667 | err = PTR_ERR(fid); | |
51a87c55 | 668 | P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err); |
bd238fb4 | 669 | fid = NULL; |
6a3124a3 | 670 | goto error; |
6d27e64d | 671 | } |
6a3124a3 | 672 | |
bd238fb4 | 673 | /* instantiate inode and assign the unopened fid to the dentry */ |
ed80fcfa | 674 | inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb); |
6a3124a3 LI |
675 | if (IS_ERR(inode)) { |
676 | err = PTR_ERR(inode); | |
51a87c55 | 677 | P9_DPRINTK(P9_DEBUG_VFS, "inode creation failed %d\n", err); |
6a3124a3 LI |
678 | goto error; |
679 | } | |
50fb6d2b AK |
680 | err = v9fs_fid_add(dentry, fid); |
681 | if (err < 0) | |
682 | goto error; | |
5441ae5e | 683 | d_instantiate(dentry, inode); |
bd238fb4 | 684 | return ofid; |
bd238fb4 | 685 | error: |
bd238fb4 LI |
686 | if (ofid) |
687 | p9_client_clunk(ofid); | |
688 | ||
689 | if (fid) | |
690 | p9_client_clunk(fid); | |
691 | ||
692 | return ERR_PTR(err); | |
693 | } | |
694 | ||
695 | /** | |
696 | * v9fs_vfs_create - VFS hook to create files | |
ee443996 | 697 | * @dir: directory inode that is being created |
bd238fb4 LI |
698 | * @dentry: dentry that is being deleted |
699 | * @mode: create permissions | |
700 | * @nd: path information | |
701 | * | |
702 | */ | |
6a3124a3 | 703 | |
bd238fb4 LI |
704 | static int |
705 | v9fs_vfs_create(struct inode *dir, struct dentry *dentry, int mode, | |
706 | struct nameidata *nd) | |
707 | { | |
708 | int err; | |
709 | u32 perm; | |
710 | int flags; | |
6b39f6d2 AK |
711 | struct file *filp; |
712 | struct v9fs_inode *v9inode; | |
bd238fb4 | 713 | struct v9fs_session_info *v9ses; |
3cf387d7 | 714 | struct p9_fid *fid, *inode_fid; |
bd238fb4 LI |
715 | |
716 | err = 0; | |
717 | fid = NULL; | |
718 | v9ses = v9fs_inode2v9ses(dir); | |
719 | perm = unixmode2p9mode(v9ses, mode); | |
dd7dd556 | 720 | if (nd) |
8a5e929d | 721 | flags = nd->intent.open.flags; |
bd238fb4 LI |
722 | else |
723 | flags = O_RDWR; | |
724 | ||
725 | fid = v9fs_create(v9ses, dir, dentry, NULL, perm, | |
dd6102fb SK |
726 | v9fs_uflags2omode(flags, |
727 | v9fs_proto_dotu(v9ses))); | |
bd238fb4 LI |
728 | if (IS_ERR(fid)) { |
729 | err = PTR_ERR(fid); | |
730 | fid = NULL; | |
731 | goto error; | |
732 | } | |
733 | ||
d28c61f0 | 734 | v9fs_invalidate_inode_attr(dir); |
bd238fb4 | 735 | /* if we are opening a file, assign the open fid to the file */ |
dd7dd556 | 736 | if (nd) { |
6b39f6d2 | 737 | v9inode = V9FS_I(dentry->d_inode); |
5a7e0a8c | 738 | mutex_lock(&v9inode->v_mutex); |
7add697a AK |
739 | if (v9ses->cache && !v9inode->writeback_fid && |
740 | ((flags & O_ACCMODE) != O_RDONLY)) { | |
3cf387d7 | 741 | /* |
6b39f6d2 | 742 | * clone a fid and add it to writeback_fid |
3cf387d7 AK |
743 | * we do it during open time instead of |
744 | * page dirty time via write_begin/page_mkwrite | |
745 | * because we want write after unlink usecase | |
746 | * to work. | |
747 | */ | |
748 | inode_fid = v9fs_writeback_fid(dentry); | |
749 | if (IS_ERR(inode_fid)) { | |
750 | err = PTR_ERR(inode_fid); | |
5a7e0a8c | 751 | mutex_unlock(&v9inode->v_mutex); |
3cf387d7 AK |
752 | goto error; |
753 | } | |
6b39f6d2 | 754 | v9inode->writeback_fid = (void *) inode_fid; |
3cf387d7 | 755 | } |
5a7e0a8c | 756 | mutex_unlock(&v9inode->v_mutex); |
877cb3d4 | 757 | filp = lookup_instantiate_filp(nd, dentry, generic_file_open); |
6a3124a3 | 758 | if (IS_ERR(filp)) { |
bd238fb4 LI |
759 | err = PTR_ERR(filp); |
760 | goto error; | |
6a3124a3 LI |
761 | } |
762 | ||
bd238fb4 | 763 | filp->private_data = fid; |
46848de0 AK |
764 | #ifdef CONFIG_9P_FSCACHE |
765 | if (v9ses->cache) | |
766 | v9fs_cache_inode_set_cookie(dentry->d_inode, filp); | |
767 | #endif | |
bd238fb4 LI |
768 | } else |
769 | p9_client_clunk(fid); | |
6a3124a3 LI |
770 | |
771 | return 0; | |
772 | ||
773 | error: | |
bd238fb4 LI |
774 | if (fid) |
775 | p9_client_clunk(fid); | |
6a3124a3 | 776 | |
6a3124a3 | 777 | return err; |
2bad8471 EVH |
778 | } |
779 | ||
780 | /** | |
781 | * v9fs_vfs_mkdir - VFS mkdir hook to create a directory | |
ee443996 | 782 | * @dir: inode that is being unlinked |
2bad8471 EVH |
783 | * @dentry: dentry that is being unlinked |
784 | * @mode: mode for new directory | |
785 | * | |
786 | */ | |
787 | ||
6a3124a3 | 788 | static int v9fs_vfs_mkdir(struct inode *dir, struct dentry *dentry, int mode) |
2bad8471 | 789 | { |
6a3124a3 | 790 | int err; |
bd238fb4 | 791 | u32 perm; |
bd238fb4 | 792 | struct p9_fid *fid; |
d28c61f0 | 793 | struct v9fs_session_info *v9ses; |
6a3124a3 | 794 | |
bd238fb4 LI |
795 | P9_DPRINTK(P9_DEBUG_VFS, "name %s\n", dentry->d_name.name); |
796 | err = 0; | |
6a3124a3 | 797 | v9ses = v9fs_inode2v9ses(dir); |
6a3124a3 | 798 | perm = unixmode2p9mode(v9ses, mode | S_IFDIR); |
bd238fb4 LI |
799 | fid = v9fs_create(v9ses, dir, dentry, NULL, perm, P9_OREAD); |
800 | if (IS_ERR(fid)) { | |
801 | err = PTR_ERR(fid); | |
802 | fid = NULL; | |
d28c61f0 | 803 | } else { |
b271ec47 | 804 | inc_nlink(dir); |
d28c61f0 AK |
805 | v9fs_invalidate_inode_attr(dir); |
806 | } | |
6a3124a3 | 807 | |
bd238fb4 LI |
808 | if (fid) |
809 | p9_client_clunk(fid); | |
6a3124a3 | 810 | |
6a3124a3 | 811 | return err; |
2bad8471 EVH |
812 | } |
813 | ||
814 | /** | |
815 | * v9fs_vfs_lookup - VFS lookup hook to "walk" to a new inode | |
816 | * @dir: inode that is being walked from | |
817 | * @dentry: dentry that is being walked to? | |
818 | * @nameidata: path data | |
819 | * | |
820 | */ | |
821 | ||
53c06f4e | 822 | struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry, |
2bad8471 EVH |
823 | struct nameidata *nameidata) |
824 | { | |
73f50717 | 825 | struct dentry *res; |
2bad8471 EVH |
826 | struct super_block *sb; |
827 | struct v9fs_session_info *v9ses; | |
bd238fb4 | 828 | struct p9_fid *dfid, *fid; |
2bad8471 | 829 | struct inode *inode; |
bd238fb4 | 830 | char *name; |
2bad8471 EVH |
831 | int result = 0; |
832 | ||
bd238fb4 | 833 | P9_DPRINTK(P9_DEBUG_VFS, "dir: %p dentry: (%s) %p nameidata: %p\n", |
731805b4 | 834 | dir, dentry->d_name.name, dentry, nameidata); |
2bad8471 | 835 | |
11e9b49b SK |
836 | if (dentry->d_name.len > NAME_MAX) |
837 | return ERR_PTR(-ENAMETOOLONG); | |
838 | ||
2bad8471 EVH |
839 | sb = dir->i_sb; |
840 | v9ses = v9fs_inode2v9ses(dir); | |
a534c8d1 | 841 | /* We can walk d_parent because we hold the dir->i_mutex */ |
bd238fb4 LI |
842 | dfid = v9fs_fid_lookup(dentry->d_parent); |
843 | if (IS_ERR(dfid)) | |
e231c2ee | 844 | return ERR_CAST(dfid); |
bd238fb4 LI |
845 | |
846 | name = (char *) dentry->d_name.name; | |
847 | fid = p9_client_walk(dfid, 1, &name, 1); | |
848 | if (IS_ERR(fid)) { | |
849 | result = PTR_ERR(fid); | |
2bad8471 | 850 | if (result == -ENOENT) { |
85e0df24 AK |
851 | inode = NULL; |
852 | goto inst_out; | |
2bad8471 | 853 | } |
2bad8471 | 854 | |
bd238fb4 | 855 | return ERR_PTR(result); |
2bad8471 | 856 | } |
73f50717 AK |
857 | /* |
858 | * Make sure we don't use a wrong inode due to parallel | |
859 | * unlink. For cached mode create calls request for new | |
860 | * inode. But with cache disabled, lookup should do this. | |
861 | */ | |
862 | if (v9ses->cache) | |
863 | inode = v9fs_get_inode_from_fid(v9ses, fid, dir->i_sb); | |
864 | else | |
865 | inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb); | |
bd238fb4 LI |
866 | if (IS_ERR(inode)) { |
867 | result = PTR_ERR(inode); | |
868 | inode = NULL; | |
869 | goto error; | |
2bad8471 | 870 | } |
bd238fb4 | 871 | result = v9fs_fid_add(dentry, fid); |
6a3124a3 | 872 | if (result < 0) |
9856af8b | 873 | goto error_iput; |
85e0df24 | 874 | inst_out: |
73f50717 AK |
875 | /* |
876 | * If we had a rename on the server and a parallel lookup | |
877 | * for the new name, then make sure we instantiate with | |
878 | * the new name. ie look up for a/b, while on server somebody | |
879 | * moved b under k and client parallely did a lookup for | |
880 | * k/b. | |
881 | */ | |
882 | res = d_materialise_unique(dentry, inode); | |
883 | if (!IS_ERR(res)) | |
884 | return res; | |
885 | result = PTR_ERR(res); | |
9856af8b AK |
886 | error_iput: |
887 | iput(inode); | |
bd238fb4 | 888 | error: |
62aa528e | 889 | p9_client_clunk(fid); |
da977b2c | 890 | |
2bad8471 EVH |
891 | return ERR_PTR(result); |
892 | } | |
893 | ||
894 | /** | |
895 | * v9fs_vfs_unlink - VFS unlink hook to delete an inode | |
896 | * @i: inode that is being unlinked | |
73c592b9 | 897 | * @d: dentry that is being unlinked |
2bad8471 EVH |
898 | * |
899 | */ | |
900 | ||
53c06f4e | 901 | int v9fs_vfs_unlink(struct inode *i, struct dentry *d) |
2bad8471 EVH |
902 | { |
903 | return v9fs_remove(i, d, 0); | |
904 | } | |
905 | ||
906 | /** | |
907 | * v9fs_vfs_rmdir - VFS unlink hook to delete a directory | |
908 | * @i: inode that is being unlinked | |
73c592b9 | 909 | * @d: dentry that is being unlinked |
2bad8471 EVH |
910 | * |
911 | */ | |
912 | ||
53c06f4e | 913 | int v9fs_vfs_rmdir(struct inode *i, struct dentry *d) |
2bad8471 | 914 | { |
48e370ff | 915 | return v9fs_remove(i, d, AT_REMOVEDIR); |
2bad8471 EVH |
916 | } |
917 | ||
918 | /** | |
919 | * v9fs_vfs_rename - VFS hook to rename an inode | |
920 | * @old_dir: old dir inode | |
921 | * @old_dentry: old dentry | |
922 | * @new_dir: new dir inode | |
923 | * @new_dentry: new dentry | |
924 | * | |
925 | */ | |
926 | ||
53c06f4e | 927 | int |
2bad8471 EVH |
928 | v9fs_vfs_rename(struct inode *old_dir, struct dentry *old_dentry, |
929 | struct inode *new_dir, struct dentry *new_dentry) | |
930 | { | |
d28c61f0 | 931 | int retval; |
bd238fb4 | 932 | struct inode *old_inode; |
b271ec47 | 933 | struct inode *new_inode; |
bd238fb4 LI |
934 | struct v9fs_session_info *v9ses; |
935 | struct p9_fid *oldfid; | |
936 | struct p9_fid *olddirfid; | |
937 | struct p9_fid *newdirfid; | |
938 | struct p9_wstat wstat; | |
2bad8471 | 939 | |
bd238fb4 LI |
940 | P9_DPRINTK(P9_DEBUG_VFS, "\n"); |
941 | retval = 0; | |
942 | old_inode = old_dentry->d_inode; | |
b271ec47 | 943 | new_inode = new_dentry->d_inode; |
bd238fb4 LI |
944 | v9ses = v9fs_inode2v9ses(old_inode); |
945 | oldfid = v9fs_fid_lookup(old_dentry); | |
ba17674f | 946 | if (IS_ERR(oldfid)) |
da977b2c EVH |
947 | return PTR_ERR(oldfid); |
948 | ||
949 | olddirfid = v9fs_fid_clone(old_dentry->d_parent); | |
ba17674f | 950 | if (IS_ERR(olddirfid)) { |
da977b2c | 951 | retval = PTR_ERR(olddirfid); |
bd238fb4 | 952 | goto done; |
da977b2c EVH |
953 | } |
954 | ||
955 | newdirfid = v9fs_fid_clone(new_dentry->d_parent); | |
ba17674f | 956 | if (IS_ERR(newdirfid)) { |
da977b2c | 957 | retval = PTR_ERR(newdirfid); |
bd238fb4 | 958 | goto clunk_olddir; |
2bad8471 EVH |
959 | } |
960 | ||
a534c8d1 | 961 | down_write(&v9ses->rename_sem); |
4681dbda | 962 | if (v9fs_proto_dotl(v9ses)) { |
9e8fb38e AK |
963 | retval = p9_client_renameat(olddirfid, old_dentry->d_name.name, |
964 | newdirfid, new_dentry->d_name.name); | |
965 | if (retval == -EOPNOTSUPP) | |
966 | retval = p9_client_rename(oldfid, newdirfid, | |
967 | new_dentry->d_name.name); | |
968 | if (retval != -EOPNOTSUPP) | |
4681dbda SK |
969 | goto clunk_newdir; |
970 | } | |
a534c8d1 AK |
971 | if (old_dentry->d_parent != new_dentry->d_parent) { |
972 | /* | |
973 | * 9P .u can only handle file rename in the same directory | |
974 | */ | |
4681dbda | 975 | |
bd238fb4 LI |
976 | P9_DPRINTK(P9_DEBUG_ERROR, |
977 | "old dir and new dir are different\n"); | |
621997cd | 978 | retval = -EXDEV; |
bd238fb4 | 979 | goto clunk_newdir; |
2bad8471 | 980 | } |
531b1094 | 981 | v9fs_blank_wstat(&wstat); |
ba17674f | 982 | wstat.muid = v9ses->uname; |
531b1094 | 983 | wstat.name = (char *) new_dentry->d_name.name; |
bd238fb4 | 984 | retval = p9_client_wstat(oldfid, &wstat); |
2bad8471 | 985 | |
bd238fb4 | 986 | clunk_newdir: |
b271ec47 AK |
987 | if (!retval) { |
988 | if (new_inode) { | |
989 | if (S_ISDIR(new_inode->i_mode)) | |
990 | clear_nlink(new_inode); | |
991 | else | |
992 | drop_nlink(new_inode); | |
993 | } | |
994 | if (S_ISDIR(old_inode->i_mode)) { | |
995 | if (!new_inode) | |
996 | inc_nlink(new_dir); | |
997 | drop_nlink(old_dir); | |
998 | } | |
3bc86de3 | 999 | v9fs_invalidate_inode_attr(old_inode); |
d28c61f0 AK |
1000 | v9fs_invalidate_inode_attr(old_dir); |
1001 | v9fs_invalidate_inode_attr(new_dir); | |
3bc86de3 | 1002 | |
a534c8d1 AK |
1003 | /* successful rename */ |
1004 | d_move(old_dentry, new_dentry); | |
b271ec47 | 1005 | } |
a534c8d1 | 1006 | up_write(&v9ses->rename_sem); |
22150c4f | 1007 | p9_client_clunk(newdirfid); |
2bad8471 | 1008 | |
bd238fb4 | 1009 | clunk_olddir: |
22150c4f | 1010 | p9_client_clunk(olddirfid); |
da977b2c | 1011 | |
bd238fb4 | 1012 | done: |
2bad8471 EVH |
1013 | return retval; |
1014 | } | |
1015 | ||
1016 | /** | |
943ffb58 | 1017 | * v9fs_vfs_getattr - retrieve file metadata |
ee443996 EVH |
1018 | * @mnt: mount information |
1019 | * @dentry: file to get attributes on | |
1020 | * @stat: metadata structure to populate | |
2bad8471 EVH |
1021 | * |
1022 | */ | |
1023 | ||
1024 | static int | |
1025 | v9fs_vfs_getattr(struct vfsmount *mnt, struct dentry *dentry, | |
1026 | struct kstat *stat) | |
1027 | { | |
bd238fb4 LI |
1028 | int err; |
1029 | struct v9fs_session_info *v9ses; | |
1030 | struct p9_fid *fid; | |
51a87c55 | 1031 | struct p9_wstat *st; |
bd238fb4 LI |
1032 | |
1033 | P9_DPRINTK(P9_DEBUG_VFS, "dentry: %p\n", dentry); | |
1034 | err = -EPERM; | |
42869c8a | 1035 | v9ses = v9fs_dentry2v9ses(dentry); |
a1211908 AK |
1036 | if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) { |
1037 | generic_fillattr(dentry->d_inode, stat); | |
1038 | return 0; | |
1039 | } | |
bd238fb4 LI |
1040 | fid = v9fs_fid_lookup(dentry); |
1041 | if (IS_ERR(fid)) | |
da977b2c | 1042 | return PTR_ERR(fid); |
2bad8471 | 1043 | |
bd238fb4 LI |
1044 | st = p9_client_stat(fid); |
1045 | if (IS_ERR(st)) | |
1046 | return PTR_ERR(st); | |
2bad8471 | 1047 | |
bd238fb4 | 1048 | v9fs_stat2inode(st, dentry->d_inode, dentry->d_inode->i_sb); |
45089142 | 1049 | generic_fillattr(dentry->d_inode, stat); |
2bad8471 | 1050 | |
62b2be59 | 1051 | p9stat_free(st); |
bd238fb4 LI |
1052 | kfree(st); |
1053 | return 0; | |
2bad8471 EVH |
1054 | } |
1055 | ||
1056 | /** | |
1057 | * v9fs_vfs_setattr - set file metadata | |
1058 | * @dentry: file whose metadata to set | |
1059 | * @iattr: metadata assignment structure | |
1060 | * | |
1061 | */ | |
1062 | ||
1063 | static int v9fs_vfs_setattr(struct dentry *dentry, struct iattr *iattr) | |
1064 | { | |
bd238fb4 LI |
1065 | int retval; |
1066 | struct v9fs_session_info *v9ses; | |
1067 | struct p9_fid *fid; | |
1068 | struct p9_wstat wstat; | |
2bad8471 | 1069 | |
bd238fb4 | 1070 | P9_DPRINTK(P9_DEBUG_VFS, "\n"); |
059c138b AK |
1071 | retval = inode_change_ok(dentry->d_inode, iattr); |
1072 | if (retval) | |
1073 | return retval; | |
1074 | ||
bd238fb4 | 1075 | retval = -EPERM; |
42869c8a | 1076 | v9ses = v9fs_dentry2v9ses(dentry); |
bd238fb4 | 1077 | fid = v9fs_fid_lookup(dentry); |
da977b2c EVH |
1078 | if(IS_ERR(fid)) |
1079 | return PTR_ERR(fid); | |
2bad8471 | 1080 | |
531b1094 | 1081 | v9fs_blank_wstat(&wstat); |
2bad8471 | 1082 | if (iattr->ia_valid & ATTR_MODE) |
531b1094 | 1083 | wstat.mode = unixmode2p9mode(v9ses, iattr->ia_mode); |
2bad8471 EVH |
1084 | |
1085 | if (iattr->ia_valid & ATTR_MTIME) | |
531b1094 | 1086 | wstat.mtime = iattr->ia_mtime.tv_sec; |
2bad8471 EVH |
1087 | |
1088 | if (iattr->ia_valid & ATTR_ATIME) | |
531b1094 | 1089 | wstat.atime = iattr->ia_atime.tv_sec; |
2bad8471 EVH |
1090 | |
1091 | if (iattr->ia_valid & ATTR_SIZE) | |
531b1094 | 1092 | wstat.length = iattr->ia_size; |
2bad8471 | 1093 | |
dd6102fb | 1094 | if (v9fs_proto_dotu(v9ses)) { |
531b1094 LI |
1095 | if (iattr->ia_valid & ATTR_UID) |
1096 | wstat.n_uid = iattr->ia_uid; | |
2bad8471 | 1097 | |
531b1094 LI |
1098 | if (iattr->ia_valid & ATTR_GID) |
1099 | wstat.n_gid = iattr->ia_gid; | |
2bad8471 | 1100 | } |
059c138b | 1101 | |
3dc5436a AK |
1102 | /* Write all dirty data */ |
1103 | if (S_ISREG(dentry->d_inode->i_mode)) | |
1104 | filemap_write_and_wait(dentry->d_inode->i_mapping); | |
1105 | ||
f10fc50f AK |
1106 | retval = p9_client_wstat(fid, &wstat); |
1107 | if (retval < 0) | |
1108 | return retval; | |
059c138b AK |
1109 | |
1110 | if ((iattr->ia_valid & ATTR_SIZE) && | |
1111 | iattr->ia_size != i_size_read(dentry->d_inode)) | |
1112 | truncate_setsize(dentry->d_inode, iattr->ia_size); | |
1113 | ||
f10fc50f | 1114 | v9fs_invalidate_inode_attr(dentry->d_inode); |
2bad8471 | 1115 | |
1025774c CH |
1116 | setattr_copy(dentry->d_inode, iattr); |
1117 | mark_inode_dirty(dentry->d_inode); | |
1118 | return 0; | |
2bad8471 EVH |
1119 | } |
1120 | ||
1121 | /** | |
531b1094 LI |
1122 | * v9fs_stat2inode - populate an inode structure with mistat info |
1123 | * @stat: Plan 9 metadata (mistat) structure | |
2bad8471 EVH |
1124 | * @inode: inode to populate |
1125 | * @sb: superblock of filesystem | |
1126 | * | |
1127 | */ | |
1128 | ||
1129 | void | |
51a87c55 | 1130 | v9fs_stat2inode(struct p9_wstat *stat, struct inode *inode, |
531b1094 | 1131 | struct super_block *sb) |
2bad8471 | 1132 | { |
45089142 | 1133 | mode_t mode; |
531b1094 | 1134 | char ext[32]; |
5717144a AK |
1135 | char tag_name[14]; |
1136 | unsigned int i_nlink; | |
2bad8471 | 1137 | struct v9fs_session_info *v9ses = sb->s_fs_info; |
b3cbea03 | 1138 | struct v9fs_inode *v9inode = V9FS_I(inode); |
2bad8471 | 1139 | |
bfe86848 | 1140 | set_nlink(inode, 1); |
2bad8471 | 1141 | |
531b1094 LI |
1142 | inode->i_atime.tv_sec = stat->atime; |
1143 | inode->i_mtime.tv_sec = stat->mtime; | |
1144 | inode->i_ctime.tv_sec = stat->mtime; | |
2bad8471 | 1145 | |
bd32b82d LI |
1146 | inode->i_uid = v9ses->dfltuid; |
1147 | inode->i_gid = v9ses->dfltgid; | |
2bad8471 | 1148 | |
dd6102fb | 1149 | if (v9fs_proto_dotu(v9ses)) { |
531b1094 LI |
1150 | inode->i_uid = stat->n_uid; |
1151 | inode->i_gid = stat->n_gid; | |
2bad8471 | 1152 | } |
5717144a AK |
1153 | if ((S_ISREG(inode->i_mode)) || (S_ISDIR(inode->i_mode))) { |
1154 | if (v9fs_proto_dotu(v9ses) && (stat->extension[0] != '\0')) { | |
1155 | /* | |
1156 | * Hadlink support got added later to | |
1157 | * to the .u extension. So there can be | |
1158 | * server out there that doesn't support | |
1159 | * this even with .u extension. So check | |
1160 | * for non NULL stat->extension | |
1161 | */ | |
1162 | strncpy(ext, stat->extension, sizeof(ext)); | |
1163 | /* HARDLINKCOUNT %u */ | |
1164 | sscanf(ext, "%13s %u", tag_name, &i_nlink); | |
1165 | if (!strncmp(tag_name, "HARDLINKCOUNT", 13)) | |
bfe86848 | 1166 | set_nlink(inode, i_nlink); |
5717144a AK |
1167 | } |
1168 | } | |
45089142 AK |
1169 | mode = stat->mode & S_IALLUGO; |
1170 | mode |= inode->i_mode & ~S_IALLUGO; | |
1171 | inode->i_mode = mode; | |
7549ae3e | 1172 | i_size_write(inode, stat->length); |
2bad8471 | 1173 | |
bd238fb4 | 1174 | /* not real number of blocks, but 512 byte ones ... */ |
7549ae3e | 1175 | inode->i_blocks = (i_size_read(inode) + 512 - 1) >> 9; |
b3cbea03 | 1176 | v9inode->cache_validity &= ~V9FS_INO_INVALID_ATTR; |
2bad8471 EVH |
1177 | } |
1178 | ||
1179 | /** | |
1180 | * v9fs_qid2ino - convert qid into inode number | |
1181 | * @qid: qid to hash | |
1182 | * | |
1183 | * BUG: potential for inode number collisions? | |
1184 | */ | |
1185 | ||
bd238fb4 | 1186 | ino_t v9fs_qid2ino(struct p9_qid *qid) |
2bad8471 EVH |
1187 | { |
1188 | u64 path = qid->path + 2; | |
1189 | ino_t i = 0; | |
1190 | ||
1191 | if (sizeof(ino_t) == sizeof(path)) | |
1192 | memcpy(&i, &path, sizeof(ino_t)); | |
1193 | else | |
1194 | i = (ino_t) (path ^ (path >> 32)); | |
1195 | ||
1196 | return i; | |
1197 | } | |
1198 | ||
2bad8471 EVH |
1199 | /** |
1200 | * v9fs_readlink - read a symlink's location (internal version) | |
1201 | * @dentry: dentry for symlink | |
73c592b9 | 1202 | * @buffer: buffer to load symlink location into |
2bad8471 EVH |
1203 | * @buflen: length of buffer |
1204 | * | |
1205 | */ | |
1206 | ||
1207 | static int v9fs_readlink(struct dentry *dentry, char *buffer, int buflen) | |
1208 | { | |
bd238fb4 | 1209 | int retval; |
2bad8471 | 1210 | |
bd238fb4 LI |
1211 | struct v9fs_session_info *v9ses; |
1212 | struct p9_fid *fid; | |
51a87c55 | 1213 | struct p9_wstat *st; |
2bad8471 | 1214 | |
bd238fb4 LI |
1215 | P9_DPRINTK(P9_DEBUG_VFS, " %s\n", dentry->d_name.name); |
1216 | retval = -EPERM; | |
42869c8a | 1217 | v9ses = v9fs_dentry2v9ses(dentry); |
bd238fb4 | 1218 | fid = v9fs_fid_lookup(dentry); |
ba17674f | 1219 | if (IS_ERR(fid)) |
da977b2c | 1220 | return PTR_ERR(fid); |
2bad8471 | 1221 | |
329176cc | 1222 | if (!v9fs_proto_dotu(v9ses)) |
bd238fb4 | 1223 | return -EBADF; |
2bad8471 | 1224 | |
bd238fb4 LI |
1225 | st = p9_client_stat(fid); |
1226 | if (IS_ERR(st)) | |
1227 | return PTR_ERR(st); | |
2bad8471 | 1228 | |
bd238fb4 | 1229 | if (!(st->mode & P9_DMSYMLINK)) { |
2bad8471 | 1230 | retval = -EINVAL; |
bd238fb4 | 1231 | goto done; |
2bad8471 EVH |
1232 | } |
1233 | ||
1234 | /* copy extension buffer into buffer */ | |
51a87c55 | 1235 | strncpy(buffer, st->extension, buflen); |
2bad8471 | 1236 | |
bd238fb4 | 1237 | P9_DPRINTK(P9_DEBUG_VFS, |
51a87c55 | 1238 | "%s -> %s (%s)\n", dentry->d_name.name, st->extension, buffer); |
2bad8471 | 1239 | |
2511cd0b | 1240 | retval = strnlen(buffer, buflen); |
bd238fb4 | 1241 | done: |
62b2be59 | 1242 | p9stat_free(st); |
bd238fb4 | 1243 | kfree(st); |
2bad8471 EVH |
1244 | return retval; |
1245 | } | |
1246 | ||
2bad8471 EVH |
1247 | /** |
1248 | * v9fs_vfs_follow_link - follow a symlink path | |
1249 | * @dentry: dentry for symlink | |
1250 | * @nd: nameidata | |
1251 | * | |
1252 | */ | |
1253 | ||
1254 | static void *v9fs_vfs_follow_link(struct dentry *dentry, struct nameidata *nd) | |
1255 | { | |
1256 | int len = 0; | |
1257 | char *link = __getname(); | |
1258 | ||
bd238fb4 | 1259 | P9_DPRINTK(P9_DEBUG_VFS, "%s n", dentry->d_name.name); |
2bad8471 EVH |
1260 | |
1261 | if (!link) | |
1262 | link = ERR_PTR(-ENOMEM); | |
1263 | else { | |
16cce6d2 | 1264 | len = v9fs_readlink(dentry, link, PATH_MAX); |
2bad8471 EVH |
1265 | |
1266 | if (len < 0) { | |
ce44eeb6 | 1267 | __putname(link); |
2bad8471 EVH |
1268 | link = ERR_PTR(len); |
1269 | } else | |
2511cd0b | 1270 | link[min(len, PATH_MAX-1)] = 0; |
2bad8471 EVH |
1271 | } |
1272 | nd_set_link(nd, link); | |
1273 | ||
1274 | return NULL; | |
1275 | } | |
1276 | ||
1277 | /** | |
1278 | * v9fs_vfs_put_link - release a symlink path | |
1279 | * @dentry: dentry for symlink | |
1280 | * @nd: nameidata | |
ee443996 | 1281 | * @p: unused |
2bad8471 EVH |
1282 | * |
1283 | */ | |
1284 | ||
53c06f4e | 1285 | void |
ee443996 | 1286 | v9fs_vfs_put_link(struct dentry *dentry, struct nameidata *nd, void *p) |
2bad8471 EVH |
1287 | { |
1288 | char *s = nd_get_link(nd); | |
1289 | ||
6ff23207 DG |
1290 | P9_DPRINTK(P9_DEBUG_VFS, " %s %s\n", dentry->d_name.name, |
1291 | IS_ERR(s) ? "<error>" : s); | |
2bad8471 | 1292 | if (!IS_ERR(s)) |
ce44eeb6 | 1293 | __putname(s); |
2bad8471 EVH |
1294 | } |
1295 | ||
ee443996 EVH |
1296 | /** |
1297 | * v9fs_vfs_mkspecial - create a special file | |
1298 | * @dir: inode to create special file in | |
1299 | * @dentry: dentry to create | |
1300 | * @mode: mode to create special file | |
1301 | * @extension: 9p2000.u format extension string representing special file | |
1302 | * | |
1303 | */ | |
1304 | ||
531b1094 LI |
1305 | static int v9fs_vfs_mkspecial(struct inode *dir, struct dentry *dentry, |
1306 | int mode, const char *extension) | |
2bad8471 | 1307 | { |
bd238fb4 | 1308 | u32 perm; |
bd238fb4 | 1309 | struct p9_fid *fid; |
d28c61f0 | 1310 | struct v9fs_session_info *v9ses; |
2bad8471 | 1311 | |
6a3124a3 | 1312 | v9ses = v9fs_inode2v9ses(dir); |
dd6102fb | 1313 | if (!v9fs_proto_dotu(v9ses)) { |
bd238fb4 | 1314 | P9_DPRINTK(P9_DEBUG_ERROR, "not extended\n"); |
6a3124a3 | 1315 | return -EPERM; |
2bad8471 EVH |
1316 | } |
1317 | ||
da977b2c | 1318 | perm = unixmode2p9mode(v9ses, mode); |
bd238fb4 LI |
1319 | fid = v9fs_create(v9ses, dir, dentry, (char *) extension, perm, |
1320 | P9_OREAD); | |
1321 | if (IS_ERR(fid)) | |
1322 | return PTR_ERR(fid); | |
da977b2c | 1323 | |
d28c61f0 | 1324 | v9fs_invalidate_inode_attr(dir); |
bd238fb4 | 1325 | p9_client_clunk(fid); |
6a3124a3 | 1326 | return 0; |
531b1094 LI |
1327 | } |
1328 | ||
1329 | /** | |
1330 | * v9fs_vfs_symlink - helper function to create symlinks | |
1331 | * @dir: directory inode containing symlink | |
1332 | * @dentry: dentry for symlink | |
1333 | * @symname: symlink data | |
1334 | * | |
ee443996 | 1335 | * See Also: 9P2000.u RFC for more information |
531b1094 LI |
1336 | * |
1337 | */ | |
1338 | ||
1339 | static int | |
1340 | v9fs_vfs_symlink(struct inode *dir, struct dentry *dentry, const char *symname) | |
1341 | { | |
bd238fb4 LI |
1342 | P9_DPRINTK(P9_DEBUG_VFS, " %lu,%s,%s\n", dir->i_ino, |
1343 | dentry->d_name.name, symname); | |
531b1094 LI |
1344 | |
1345 | return v9fs_vfs_mkspecial(dir, dentry, S_IFLNK, symname); | |
1346 | } | |
1347 | ||
1348 | /** | |
1349 | * v9fs_vfs_link - create a hardlink | |
1350 | * @old_dentry: dentry for file to link to | |
1351 | * @dir: inode destination for new link | |
1352 | * @dentry: dentry for link | |
1353 | * | |
1354 | */ | |
1355 | ||
531b1094 LI |
1356 | static int |
1357 | v9fs_vfs_link(struct dentry *old_dentry, struct inode *dir, | |
1358 | struct dentry *dentry) | |
1359 | { | |
1360 | int retval; | |
531b1094 | 1361 | char *name; |
d28c61f0 | 1362 | struct p9_fid *oldfid; |
531b1094 | 1363 | |
bd238fb4 LI |
1364 | P9_DPRINTK(P9_DEBUG_VFS, |
1365 | " %lu,%s,%s\n", dir->i_ino, dentry->d_name.name, | |
531b1094 LI |
1366 | old_dentry->d_name.name); |
1367 | ||
da977b2c | 1368 | oldfid = v9fs_fid_clone(old_dentry); |
ba17674f | 1369 | if (IS_ERR(oldfid)) |
da977b2c | 1370 | return PTR_ERR(oldfid); |
531b1094 LI |
1371 | |
1372 | name = __getname(); | |
da977b2c EVH |
1373 | if (unlikely(!name)) { |
1374 | retval = -ENOMEM; | |
1375 | goto clunk_fid; | |
1376 | } | |
0710d36a | 1377 | |
16cce6d2 | 1378 | sprintf(name, "%d\n", oldfid->fid); |
bd238fb4 | 1379 | retval = v9fs_vfs_mkspecial(dir, dentry, P9_DMLINK, name); |
531b1094 | 1380 | __putname(name); |
c06c066a AK |
1381 | if (!retval) { |
1382 | v9fs_refresh_inode(oldfid, old_dentry->d_inode); | |
d28c61f0 | 1383 | v9fs_invalidate_inode_attr(dir); |
c06c066a | 1384 | } |
da977b2c | 1385 | clunk_fid: |
bd238fb4 | 1386 | p9_client_clunk(oldfid); |
2bad8471 EVH |
1387 | return retval; |
1388 | } | |
1389 | ||
1390 | /** | |
1391 | * v9fs_vfs_mknod - create a special file | |
1392 | * @dir: inode destination for new link | |
1393 | * @dentry: dentry for file | |
1394 | * @mode: mode for creation | |
ee443996 | 1395 | * @rdev: device associated with special file |
2bad8471 EVH |
1396 | * |
1397 | */ | |
1398 | ||
1399 | static int | |
1400 | v9fs_vfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t rdev) | |
1401 | { | |
531b1094 LI |
1402 | int retval; |
1403 | char *name; | |
2bad8471 | 1404 | |
bd238fb4 LI |
1405 | P9_DPRINTK(P9_DEBUG_VFS, |
1406 | " %lu,%s mode: %x MAJOR: %u MINOR: %u\n", dir->i_ino, | |
2bad8471 EVH |
1407 | dentry->d_name.name, mode, MAJOR(rdev), MINOR(rdev)); |
1408 | ||
531b1094 LI |
1409 | if (!new_valid_dev(rdev)) |
1410 | return -EINVAL; | |
2bad8471 | 1411 | |
531b1094 | 1412 | name = __getname(); |
c0291a05 ET |
1413 | if (!name) |
1414 | return -ENOMEM; | |
2bad8471 EVH |
1415 | /* build extension */ |
1416 | if (S_ISBLK(mode)) | |
531b1094 | 1417 | sprintf(name, "b %u %u", MAJOR(rdev), MINOR(rdev)); |
2bad8471 | 1418 | else if (S_ISCHR(mode)) |
531b1094 | 1419 | sprintf(name, "c %u %u", MAJOR(rdev), MINOR(rdev)); |
73c592b9 | 1420 | else if (S_ISFIFO(mode)) |
531b1094 | 1421 | *name = 0; |
75cc5c9b VJ |
1422 | else if (S_ISSOCK(mode)) |
1423 | *name = 0; | |
2bad8471 | 1424 | else { |
531b1094 LI |
1425 | __putname(name); |
1426 | return -EINVAL; | |
2bad8471 EVH |
1427 | } |
1428 | ||
531b1094 LI |
1429 | retval = v9fs_vfs_mkspecial(dir, dentry, mode, name); |
1430 | __putname(name); | |
2bad8471 EVH |
1431 | |
1432 | return retval; | |
1433 | } | |
1434 | ||
b3cbea03 AK |
1435 | int v9fs_refresh_inode(struct p9_fid *fid, struct inode *inode) |
1436 | { | |
45089142 AK |
1437 | int umode; |
1438 | dev_t rdev; | |
b3cbea03 AK |
1439 | loff_t i_size; |
1440 | struct p9_wstat *st; | |
1441 | struct v9fs_session_info *v9ses; | |
1442 | ||
1443 | v9ses = v9fs_inode2v9ses(inode); | |
1444 | st = p9_client_stat(fid); | |
1445 | if (IS_ERR(st)) | |
1446 | return PTR_ERR(st); | |
45089142 AK |
1447 | /* |
1448 | * Don't update inode if the file type is different | |
1449 | */ | |
1450 | umode = p9mode2unixmode(v9ses, st, &rdev); | |
1451 | if ((inode->i_mode & S_IFMT) != (umode & S_IFMT)) | |
1452 | goto out; | |
b3cbea03 AK |
1453 | |
1454 | spin_lock(&inode->i_lock); | |
1455 | /* | |
1456 | * We don't want to refresh inode->i_size, | |
1457 | * because we may have cached data | |
1458 | */ | |
1459 | i_size = inode->i_size; | |
1460 | v9fs_stat2inode(st, inode, inode->i_sb); | |
1461 | if (v9ses->cache) | |
1462 | inode->i_size = i_size; | |
1463 | spin_unlock(&inode->i_lock); | |
45089142 | 1464 | out: |
b3cbea03 AK |
1465 | p9stat_free(st); |
1466 | kfree(st); | |
1467 | return 0; | |
1468 | } | |
1469 | ||
9b6533c9 SK |
1470 | static const struct inode_operations v9fs_dir_inode_operations_dotu = { |
1471 | .create = v9fs_vfs_create, | |
1472 | .lookup = v9fs_vfs_lookup, | |
1473 | .symlink = v9fs_vfs_symlink, | |
50cc42ff | 1474 | .link = v9fs_vfs_link, |
9b6533c9 SK |
1475 | .unlink = v9fs_vfs_unlink, |
1476 | .mkdir = v9fs_vfs_mkdir, | |
1477 | .rmdir = v9fs_vfs_rmdir, | |
1d76e313 | 1478 | .mknod = v9fs_vfs_mknod, |
9b6533c9 SK |
1479 | .rename = v9fs_vfs_rename, |
1480 | .getattr = v9fs_vfs_getattr, | |
1481 | .setattr = v9fs_vfs_setattr, | |
1482 | }; | |
1483 | ||
754661f1 | 1484 | static const struct inode_operations v9fs_dir_inode_operations = { |
b501611a EVH |
1485 | .create = v9fs_vfs_create, |
1486 | .lookup = v9fs_vfs_lookup, | |
1487 | .unlink = v9fs_vfs_unlink, | |
1488 | .mkdir = v9fs_vfs_mkdir, | |
1489 | .rmdir = v9fs_vfs_rmdir, | |
1490 | .mknod = v9fs_vfs_mknod, | |
1491 | .rename = v9fs_vfs_rename, | |
1492 | .getattr = v9fs_vfs_getattr, | |
1493 | .setattr = v9fs_vfs_setattr, | |
1494 | }; | |
1495 | ||
754661f1 | 1496 | static const struct inode_operations v9fs_file_inode_operations = { |
2bad8471 EVH |
1497 | .getattr = v9fs_vfs_getattr, |
1498 | .setattr = v9fs_vfs_setattr, | |
1499 | }; | |
1500 | ||
754661f1 | 1501 | static const struct inode_operations v9fs_symlink_inode_operations = { |
204f2f0e | 1502 | .readlink = generic_readlink, |
2bad8471 EVH |
1503 | .follow_link = v9fs_vfs_follow_link, |
1504 | .put_link = v9fs_vfs_put_link, | |
1505 | .getattr = v9fs_vfs_getattr, | |
1506 | .setattr = v9fs_vfs_setattr, | |
1507 | }; | |
9b6533c9 | 1508 |