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 | ||
5d385153 JP |
26 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
27 | ||
2bad8471 EVH |
28 | #include <linux/module.h> |
29 | #include <linux/errno.h> | |
30 | #include <linux/fs.h> | |
31 | #include <linux/file.h> | |
32 | #include <linux/pagemap.h> | |
33 | #include <linux/stat.h> | |
34 | #include <linux/string.h> | |
2bad8471 EVH |
35 | #include <linux/inet.h> |
36 | #include <linux/namei.h> | |
37 | #include <linux/idr.h> | |
e8edc6e0 | 38 | #include <linux/sched.h> |
5a0e3ad6 | 39 | #include <linux/slab.h> |
ebf46264 | 40 | #include <linux/xattr.h> |
85ff872d | 41 | #include <linux/posix_acl.h> |
bd238fb4 LI |
42 | #include <net/9p/9p.h> |
43 | #include <net/9p/client.h> | |
2bad8471 | 44 | |
2bad8471 | 45 | #include "v9fs.h" |
2bad8471 | 46 | #include "v9fs_vfs.h" |
2bad8471 | 47 | #include "fid.h" |
60e78d2c | 48 | #include "cache.h" |
ebf46264 | 49 | #include "xattr.h" |
85ff872d | 50 | #include "acl.h" |
2bad8471 | 51 | |
754661f1 | 52 | static const struct inode_operations v9fs_dir_inode_operations; |
9b6533c9 | 53 | static const struct inode_operations v9fs_dir_inode_operations_dotu; |
754661f1 AV |
54 | static const struct inode_operations v9fs_file_inode_operations; |
55 | static const struct inode_operations v9fs_symlink_inode_operations; | |
f5fc6145 | 56 | |
2bad8471 EVH |
57 | /** |
58 | * unixmode2p9mode - convert unix mode bits to plan 9 | |
59 | * @v9ses: v9fs session information | |
60 | * @mode: mode to convert | |
61 | * | |
62 | */ | |
63 | ||
3eda0de6 | 64 | static u32 unixmode2p9mode(struct v9fs_session_info *v9ses, umode_t mode) |
2bad8471 EVH |
65 | { |
66 | int res; | |
67 | res = mode & 0777; | |
68 | if (S_ISDIR(mode)) | |
bd238fb4 | 69 | res |= P9_DMDIR; |
dd6102fb | 70 | if (v9fs_proto_dotu(v9ses)) { |
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; | |
2bad8471 | 88 | } |
2bad8471 EVH |
89 | return res; |
90 | } | |
91 | ||
df345c67 AK |
92 | /** |
93 | * p9mode2perm- convert plan9 mode bits to unix permission bits | |
94 | * @v9ses: v9fs session information | |
95 | * @stat: p9_wstat from which mode need to be derived | |
96 | * | |
97 | */ | |
98 | static int p9mode2perm(struct v9fs_session_info *v9ses, | |
99 | struct p9_wstat *stat) | |
100 | { | |
101 | int res; | |
102 | int mode = stat->mode; | |
103 | ||
104 | res = mode & S_IALLUGO; | |
105 | if (v9fs_proto_dotu(v9ses)) { | |
106 | if ((mode & P9_DMSETUID) == P9_DMSETUID) | |
107 | res |= S_ISUID; | |
108 | ||
109 | if ((mode & P9_DMSETGID) == P9_DMSETGID) | |
110 | res |= S_ISGID; | |
111 | ||
112 | if ((mode & P9_DMSETVTX) == P9_DMSETVTX) | |
113 | res |= S_ISVTX; | |
114 | } | |
115 | return res; | |
116 | } | |
117 | ||
2bad8471 EVH |
118 | /** |
119 | * p9mode2unixmode- convert plan9 mode bits to unix mode bits | |
120 | * @v9ses: v9fs session information | |
45089142 AK |
121 | * @stat: p9_wstat from which mode need to be derived |
122 | * @rdev: major number, minor number in case of device files. | |
2bad8471 EVH |
123 | * |
124 | */ | |
3eda0de6 AV |
125 | static umode_t p9mode2unixmode(struct v9fs_session_info *v9ses, |
126 | struct p9_wstat *stat, dev_t *rdev) | |
2bad8471 EVH |
127 | { |
128 | int res; | |
3eda0de6 | 129 | u32 mode = stat->mode; |
2bad8471 | 130 | |
45089142 | 131 | *rdev = 0; |
df345c67 | 132 | res = p9mode2perm(v9ses, stat); |
2bad8471 | 133 | |
bd238fb4 | 134 | if ((mode & P9_DMDIR) == P9_DMDIR) |
2bad8471 | 135 | res |= S_IFDIR; |
dd6102fb | 136 | else if ((mode & P9_DMSYMLINK) && (v9fs_proto_dotu(v9ses))) |
2bad8471 | 137 | res |= S_IFLNK; |
dd6102fb | 138 | else if ((mode & P9_DMSOCKET) && (v9fs_proto_dotu(v9ses)) |
2bad8471 EVH |
139 | && (v9ses->nodev == 0)) |
140 | res |= S_IFSOCK; | |
dd6102fb | 141 | else if ((mode & P9_DMNAMEDPIPE) && (v9fs_proto_dotu(v9ses)) |
2bad8471 EVH |
142 | && (v9ses->nodev == 0)) |
143 | res |= S_IFIFO; | |
dd6102fb | 144 | else if ((mode & P9_DMDEVICE) && (v9fs_proto_dotu(v9ses)) |
45089142 AK |
145 | && (v9ses->nodev == 0)) { |
146 | char type = 0, ext[32]; | |
147 | int major = -1, minor = -1; | |
148 | ||
b3f8ab4b | 149 | strlcpy(ext, stat->extension, sizeof(ext)); |
afe604d0 | 150 | sscanf(ext, "%c %i %i", &type, &major, &minor); |
45089142 AK |
151 | switch (type) { |
152 | case 'c': | |
153 | res |= S_IFCHR; | |
154 | break; | |
155 | case 'b': | |
156 | res |= S_IFBLK; | |
157 | break; | |
158 | default: | |
5d385153 JP |
159 | p9_debug(P9_DEBUG_ERROR, "Unknown special type %c %s\n", |
160 | type, stat->extension); | |
45089142 AK |
161 | }; |
162 | *rdev = MKDEV(major, minor); | |
163 | } else | |
2bad8471 EVH |
164 | res |= S_IFREG; |
165 | ||
2bad8471 EVH |
166 | return res; |
167 | } | |
168 | ||
ee443996 EVH |
169 | /** |
170 | * v9fs_uflags2omode- convert posix open flags to plan 9 mode bits | |
171 | * @uflags: flags to convert | |
2e4bef41 | 172 | * @extended: if .u extensions are active |
ee443996 EVH |
173 | */ |
174 | ||
2e4bef41 | 175 | int v9fs_uflags2omode(int uflags, int extended) |
6a3124a3 LI |
176 | { |
177 | int ret; | |
178 | ||
179 | ret = 0; | |
180 | switch (uflags&3) { | |
181 | default: | |
182 | case O_RDONLY: | |
bd238fb4 | 183 | ret = P9_OREAD; |
6a3124a3 LI |
184 | break; |
185 | ||
186 | case O_WRONLY: | |
bd238fb4 | 187 | ret = P9_OWRITE; |
6a3124a3 LI |
188 | break; |
189 | ||
190 | case O_RDWR: | |
bd238fb4 | 191 | ret = P9_ORDWR; |
6a3124a3 LI |
192 | break; |
193 | } | |
194 | ||
2e4bef41 EVH |
195 | if (extended) { |
196 | if (uflags & O_EXCL) | |
197 | ret |= P9_OEXCL; | |
198 | ||
199 | if (uflags & O_APPEND) | |
200 | ret |= P9_OAPPEND; | |
201 | } | |
6a3124a3 LI |
202 | |
203 | return ret; | |
204 | } | |
205 | ||
2bad8471 | 206 | /** |
531b1094 | 207 | * v9fs_blank_wstat - helper function to setup a 9P stat structure |
531b1094 | 208 | * @wstat: structure to initialize |
2bad8471 EVH |
209 | * |
210 | */ | |
211 | ||
7a4439c4 | 212 | void |
bd238fb4 | 213 | v9fs_blank_wstat(struct p9_wstat *wstat) |
2bad8471 | 214 | { |
531b1094 LI |
215 | wstat->type = ~0; |
216 | wstat->dev = ~0; | |
217 | wstat->qid.type = ~0; | |
218 | wstat->qid.version = ~0; | |
219 | *((long long *)&wstat->qid.path) = ~0; | |
220 | wstat->mode = ~0; | |
221 | wstat->atime = ~0; | |
222 | wstat->mtime = ~0; | |
223 | wstat->length = ~0; | |
224 | wstat->name = NULL; | |
225 | wstat->uid = NULL; | |
226 | wstat->gid = NULL; | |
227 | wstat->muid = NULL; | |
447c5094 EB |
228 | wstat->n_uid = INVALID_UID; |
229 | wstat->n_gid = INVALID_GID; | |
230 | wstat->n_muid = INVALID_UID; | |
531b1094 | 231 | wstat->extension = NULL; |
2bad8471 EVH |
232 | } |
233 | ||
60e78d2c AK |
234 | /** |
235 | * v9fs_alloc_inode - helper function to allocate an inode | |
60e78d2c AK |
236 | * |
237 | */ | |
60e78d2c AK |
238 | struct inode *v9fs_alloc_inode(struct super_block *sb) |
239 | { | |
a78ce05d AK |
240 | struct v9fs_inode *v9inode; |
241 | v9inode = (struct v9fs_inode *)kmem_cache_alloc(v9fs_inode_cache, | |
242 | GFP_KERNEL); | |
243 | if (!v9inode) | |
60e78d2c | 244 | return NULL; |
a78ce05d AK |
245 | #ifdef CONFIG_9P_FSCACHE |
246 | v9inode->fscache = NULL; | |
8f5fed1e | 247 | mutex_init(&v9inode->fscache_lock); |
a78ce05d | 248 | #endif |
6b39f6d2 | 249 | v9inode->writeback_fid = NULL; |
b3cbea03 | 250 | v9inode->cache_validity = 0; |
5a7e0a8c | 251 | mutex_init(&v9inode->v_mutex); |
a78ce05d | 252 | return &v9inode->vfs_inode; |
60e78d2c AK |
253 | } |
254 | ||
255 | /** | |
256 | * v9fs_destroy_inode - destroy an inode | |
257 | * | |
258 | */ | |
259 | ||
fa0d7e3d | 260 | static void v9fs_i_callback(struct rcu_head *head) |
60e78d2c | 261 | { |
fa0d7e3d | 262 | struct inode *inode = container_of(head, struct inode, i_rcu); |
a78ce05d | 263 | kmem_cache_free(v9fs_inode_cache, V9FS_I(inode)); |
60e78d2c | 264 | } |
fa0d7e3d NP |
265 | |
266 | void v9fs_destroy_inode(struct inode *inode) | |
267 | { | |
268 | call_rcu(&inode->i_rcu, v9fs_i_callback); | |
269 | } | |
60e78d2c | 270 | |
5ffc0cb3 | 271 | int v9fs_init_inode(struct v9fs_session_info *v9ses, |
3eda0de6 | 272 | struct inode *inode, umode_t mode, dev_t rdev) |
2bad8471 | 273 | { |
5ffc0cb3 | 274 | int err = 0; |
2bb54115 | 275 | |
217f206d | 276 | inode_init_owner(inode, NULL, mode); |
2bb54115 | 277 | inode->i_blocks = 0; |
45089142 | 278 | inode->i_rdev = rdev; |
078cd827 | 279 | inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode); |
2bb54115 AK |
280 | inode->i_mapping->a_ops = &v9fs_addr_operations; |
281 | ||
282 | switch (mode & S_IFMT) { | |
283 | case S_IFIFO: | |
284 | case S_IFBLK: | |
285 | case S_IFCHR: | |
286 | case S_IFSOCK: | |
4b43516a MK |
287 | if (v9fs_proto_dotl(v9ses)) { |
288 | inode->i_op = &v9fs_file_inode_operations_dotl; | |
4b43516a MK |
289 | } else if (v9fs_proto_dotu(v9ses)) { |
290 | inode->i_op = &v9fs_file_inode_operations; | |
4b43516a | 291 | } else { |
5d385153 JP |
292 | p9_debug(P9_DEBUG_ERROR, |
293 | "special files without extended mode\n"); | |
2bb54115 AK |
294 | err = -EINVAL; |
295 | goto error; | |
2bad8471 | 296 | } |
2bb54115 AK |
297 | init_special_inode(inode, inode->i_mode, inode->i_rdev); |
298 | break; | |
299 | case S_IFREG: | |
9b6533c9 SK |
300 | if (v9fs_proto_dotl(v9ses)) { |
301 | inode->i_op = &v9fs_file_inode_operations_dotl; | |
fb89b45c DM |
302 | if (v9ses->cache == CACHE_LOOSE || |
303 | v9ses->cache == CACHE_FSCACHE) | |
29236f4e AK |
304 | inode->i_fop = |
305 | &v9fs_cached_file_operations_dotl; | |
fb89b45c DM |
306 | else if (v9ses->cache == CACHE_MMAP) |
307 | inode->i_fop = &v9fs_mmap_file_operations_dotl; | |
29236f4e AK |
308 | else |
309 | inode->i_fop = &v9fs_file_operations_dotl; | |
9b6533c9 SK |
310 | } else { |
311 | inode->i_op = &v9fs_file_inode_operations; | |
fb89b45c DM |
312 | if (v9ses->cache == CACHE_LOOSE || |
313 | v9ses->cache == CACHE_FSCACHE) | |
314 | inode->i_fop = | |
315 | &v9fs_cached_file_operations; | |
316 | else if (v9ses->cache == CACHE_MMAP) | |
317 | inode->i_fop = &v9fs_mmap_file_operations; | |
29236f4e AK |
318 | else |
319 | inode->i_fop = &v9fs_file_operations; | |
9b6533c9 SK |
320 | } |
321 | ||
2bb54115 AK |
322 | break; |
323 | case S_IFLNK: | |
9b6533c9 | 324 | if (!v9fs_proto_dotu(v9ses) && !v9fs_proto_dotl(v9ses)) { |
5d385153 JP |
325 | p9_debug(P9_DEBUG_ERROR, |
326 | "extended modes used with legacy protocol\n"); | |
2bb54115 AK |
327 | err = -EINVAL; |
328 | goto error; | |
329 | } | |
9b6533c9 SK |
330 | |
331 | if (v9fs_proto_dotl(v9ses)) | |
332 | inode->i_op = &v9fs_symlink_inode_operations_dotl; | |
333 | else | |
334 | inode->i_op = &v9fs_symlink_inode_operations; | |
335 | ||
2bb54115 AK |
336 | break; |
337 | case S_IFDIR: | |
338 | inc_nlink(inode); | |
9b6533c9 SK |
339 | if (v9fs_proto_dotl(v9ses)) |
340 | inode->i_op = &v9fs_dir_inode_operations_dotl; | |
341 | else if (v9fs_proto_dotu(v9ses)) | |
342 | inode->i_op = &v9fs_dir_inode_operations_dotu; | |
2bb54115 AK |
343 | else |
344 | inode->i_op = &v9fs_dir_inode_operations; | |
9b6533c9 SK |
345 | |
346 | if (v9fs_proto_dotl(v9ses)) | |
347 | inode->i_fop = &v9fs_dir_operations_dotl; | |
348 | else | |
349 | inode->i_fop = &v9fs_dir_operations; | |
350 | ||
2bb54115 AK |
351 | break; |
352 | default: | |
609eac1c | 353 | p9_debug(P9_DEBUG_ERROR, "BAD mode 0x%hx S_IFMT 0x%x\n", |
5d385153 | 354 | mode, mode & S_IFMT); |
2bb54115 AK |
355 | err = -EINVAL; |
356 | goto error; | |
2bad8471 | 357 | } |
5ffc0cb3 AK |
358 | error: |
359 | return err; | |
2bb54115 | 360 | |
5ffc0cb3 | 361 | } |
2bb54115 | 362 | |
5ffc0cb3 AK |
363 | /** |
364 | * v9fs_get_inode - helper function to setup an inode | |
365 | * @sb: superblock | |
366 | * @mode: mode to setup inode with | |
367 | * | |
368 | */ | |
369 | ||
3eda0de6 | 370 | struct inode *v9fs_get_inode(struct super_block *sb, umode_t mode, dev_t rdev) |
5ffc0cb3 AK |
371 | { |
372 | int err; | |
373 | struct inode *inode; | |
374 | struct v9fs_session_info *v9ses = sb->s_fs_info; | |
375 | ||
609eac1c | 376 | p9_debug(P9_DEBUG_VFS, "super block: %p mode: %ho\n", sb, mode); |
5ffc0cb3 AK |
377 | |
378 | inode = new_inode(sb); | |
379 | if (!inode) { | |
5d385153 JP |
380 | pr_warn("%s (%d): Problem allocating inode\n", |
381 | __func__, task_pid_nr(current)); | |
5ffc0cb3 AK |
382 | return ERR_PTR(-ENOMEM); |
383 | } | |
45089142 | 384 | err = v9fs_init_inode(v9ses, inode, mode, rdev); |
5ffc0cb3 AK |
385 | if (err) { |
386 | iput(inode); | |
387 | return ERR_PTR(err); | |
388 | } | |
389 | return inode; | |
2bad8471 EVH |
390 | } |
391 | ||
bd238fb4 | 392 | /* |
6a3124a3 LI |
393 | static struct v9fs_fid* |
394 | v9fs_clone_walk(struct v9fs_session_info *v9ses, u32 fid, struct dentry *dentry) | |
395 | { | |
396 | int err; | |
736c4b85 | 397 | int nfid; |
6a3124a3 LI |
398 | struct v9fs_fid *ret; |
399 | struct v9fs_fcall *fcall; | |
400 | ||
401 | nfid = v9fs_get_idpool(&v9ses->fidpool); | |
402 | if (nfid < 0) { | |
0b8dd177 | 403 | eprintk(KERN_WARNING, "no free fids available\n"); |
731805b4 | 404 | return ERR_PTR(-ENOSPC); |
0b8dd177 LI |
405 | } |
406 | ||
6a3124a3 LI |
407 | err = v9fs_t_walk(v9ses, fid, nfid, (char *) dentry->d_name.name, |
408 | &fcall); | |
409 | ||
410 | if (err < 0) { | |
41e5a6ac LI |
411 | if (fcall && fcall->id == RWALK) |
412 | goto clunk_fid; | |
413 | ||
6a3124a3 LI |
414 | PRINT_FCALL_ERROR("walk error", fcall); |
415 | v9fs_put_idpool(nfid, &v9ses->fidpool); | |
416 | goto error; | |
0b8dd177 | 417 | } |
6a3124a3 | 418 | |
3cf6429a LI |
419 | kfree(fcall); |
420 | fcall = NULL; | |
6a3124a3 LI |
421 | ret = v9fs_fid_create(v9ses, nfid); |
422 | if (!ret) { | |
423 | err = -ENOMEM; | |
424 | goto clunk_fid; | |
425 | } | |
0b8dd177 | 426 | |
6a3124a3 LI |
427 | err = v9fs_fid_insert(ret, dentry); |
428 | if (err < 0) { | |
429 | v9fs_fid_destroy(ret); | |
430 | goto clunk_fid; | |
0b8dd177 | 431 | } |
2bad8471 | 432 | |
6a3124a3 | 433 | return ret; |
2bad8471 | 434 | |
6a3124a3 LI |
435 | clunk_fid: |
436 | v9fs_t_clunk(v9ses, nfid); | |
2bad8471 | 437 | |
6a3124a3 LI |
438 | error: |
439 | kfree(fcall); | |
440 | return ERR_PTR(err); | |
441 | } | |
bd238fb4 | 442 | */ |
2bad8471 | 443 | |
60e78d2c AK |
444 | |
445 | /** | |
446 | * v9fs_clear_inode - release an inode | |
447 | * @inode: inode to release | |
448 | * | |
449 | */ | |
b57922d9 | 450 | void v9fs_evict_inode(struct inode *inode) |
60e78d2c | 451 | { |
6b39f6d2 AK |
452 | struct v9fs_inode *v9inode = V9FS_I(inode); |
453 | ||
4ad78628 | 454 | truncate_inode_pages_final(&inode->i_data); |
dbd5768f | 455 | clear_inode(inode); |
4ad78628 | 456 | filemap_fdatawrite(&inode->i_data); |
60e78d2c | 457 | |
60e78d2c | 458 | v9fs_cache_inode_put_cookie(inode); |
6b39f6d2 AK |
459 | /* clunk the fid stashed in writeback_fid */ |
460 | if (v9inode->writeback_fid) { | |
461 | p9_client_clunk(v9inode->writeback_fid); | |
462 | v9inode->writeback_fid = NULL; | |
3cf387d7 | 463 | } |
60e78d2c AK |
464 | } |
465 | ||
fd2421f5 AK |
466 | static int v9fs_test_inode(struct inode *inode, void *data) |
467 | { | |
468 | int umode; | |
45089142 | 469 | dev_t rdev; |
fd2421f5 AK |
470 | struct v9fs_inode *v9inode = V9FS_I(inode); |
471 | struct p9_wstat *st = (struct p9_wstat *)data; | |
472 | struct v9fs_session_info *v9ses = v9fs_inode2v9ses(inode); | |
473 | ||
45089142 | 474 | umode = p9mode2unixmode(v9ses, st, &rdev); |
fd2421f5 AK |
475 | /* don't match inode of different type */ |
476 | if ((inode->i_mode & S_IFMT) != (umode & S_IFMT)) | |
477 | return 0; | |
478 | ||
479 | /* compare qid details */ | |
480 | if (memcmp(&v9inode->qid.version, | |
481 | &st->qid.version, sizeof(v9inode->qid.version))) | |
482 | return 0; | |
483 | ||
484 | if (v9inode->qid.type != st->qid.type) | |
485 | return 0; | |
8ee03163 TT |
486 | |
487 | if (v9inode->qid.path != st->qid.path) | |
488 | return 0; | |
fd2421f5 AK |
489 | return 1; |
490 | } | |
491 | ||
ed80fcfa AK |
492 | static int v9fs_test_new_inode(struct inode *inode, void *data) |
493 | { | |
494 | return 0; | |
495 | } | |
496 | ||
fd2421f5 AK |
497 | static int v9fs_set_inode(struct inode *inode, void *data) |
498 | { | |
499 | struct v9fs_inode *v9inode = V9FS_I(inode); | |
500 | struct p9_wstat *st = (struct p9_wstat *)data; | |
501 | ||
502 | memcpy(&v9inode->qid, &st->qid, sizeof(st->qid)); | |
503 | return 0; | |
504 | } | |
505 | ||
5ffc0cb3 AK |
506 | static struct inode *v9fs_qid_iget(struct super_block *sb, |
507 | struct p9_qid *qid, | |
ed80fcfa AK |
508 | struct p9_wstat *st, |
509 | int new) | |
6a3124a3 | 510 | { |
45089142 | 511 | dev_t rdev; |
3eda0de6 AV |
512 | int retval; |
513 | umode_t umode; | |
5ffc0cb3 AK |
514 | unsigned long i_ino; |
515 | struct inode *inode; | |
516 | struct v9fs_session_info *v9ses = sb->s_fs_info; | |
ed80fcfa AK |
517 | int (*test)(struct inode *, void *); |
518 | ||
519 | if (new) | |
520 | test = v9fs_test_new_inode; | |
521 | else | |
522 | test = v9fs_test_inode; | |
2bad8471 | 523 | |
5ffc0cb3 | 524 | i_ino = v9fs_qid2ino(qid); |
ed80fcfa | 525 | inode = iget5_locked(sb, i_ino, test, v9fs_set_inode, st); |
5ffc0cb3 AK |
526 | if (!inode) |
527 | return ERR_PTR(-ENOMEM); | |
528 | if (!(inode->i_state & I_NEW)) | |
529 | return inode; | |
530 | /* | |
531 | * initialize the inode with the stat info | |
532 | * FIXME!! we may need support for stale inodes | |
533 | * later. | |
534 | */ | |
fd2421f5 | 535 | inode->i_ino = i_ino; |
45089142 AK |
536 | umode = p9mode2unixmode(v9ses, st, &rdev); |
537 | retval = v9fs_init_inode(v9ses, inode, umode, rdev); | |
5ffc0cb3 | 538 | if (retval) |
6a3124a3 | 539 | goto error; |
60e78d2c | 540 | |
5ffc0cb3 | 541 | v9fs_stat2inode(st, inode, sb); |
5ffc0cb3 | 542 | v9fs_cache_inode_get_cookie(inode); |
5ffc0cb3 AK |
543 | unlock_new_inode(inode); |
544 | return inode; | |
6a3124a3 | 545 | error: |
0a73d0a2 | 546 | iget_failed(inode); |
5ffc0cb3 AK |
547 | return ERR_PTR(retval); |
548 | ||
549 | } | |
550 | ||
551 | struct inode * | |
a78ce05d | 552 | v9fs_inode_from_fid(struct v9fs_session_info *v9ses, struct p9_fid *fid, |
ed80fcfa | 553 | struct super_block *sb, int new) |
5ffc0cb3 AK |
554 | { |
555 | struct p9_wstat *st; | |
556 | struct inode *inode = NULL; | |
557 | ||
558 | st = p9_client_stat(fid); | |
559 | if (IS_ERR(st)) | |
560 | return ERR_CAST(st); | |
561 | ||
ed80fcfa | 562 | inode = v9fs_qid_iget(sb, &st->qid, st, new); |
02bc3567 | 563 | p9stat_free(st); |
bd238fb4 | 564 | kfree(st); |
5ffc0cb3 | 565 | return inode; |
2bad8471 EVH |
566 | } |
567 | ||
f88657ce AK |
568 | /** |
569 | * v9fs_at_to_dotl_flags- convert Linux specific AT flags to | |
570 | * plan 9 AT flag. | |
571 | * @flags: flags to convert | |
572 | */ | |
573 | static int v9fs_at_to_dotl_flags(int flags) | |
574 | { | |
575 | int rflags = 0; | |
576 | if (flags & AT_REMOVEDIR) | |
577 | rflags |= P9_DOTL_AT_REMOVEDIR; | |
578 | return rflags; | |
579 | } | |
580 | ||
2bad8471 EVH |
581 | /** |
582 | * v9fs_remove - helper function to remove files and directories | |
73c592b9 | 583 | * @dir: directory inode that is being deleted |
48e370ff | 584 | * @dentry: dentry that is being deleted |
fd2916bd | 585 | * @flags: removing a directory |
2bad8471 EVH |
586 | * |
587 | */ | |
588 | ||
48e370ff | 589 | static int v9fs_remove(struct inode *dir, struct dentry *dentry, int flags) |
2bad8471 | 590 | { |
48e370ff AK |
591 | struct inode *inode; |
592 | int retval = -EOPNOTSUPP; | |
593 | struct p9_fid *v9fid, *dfid; | |
594 | struct v9fs_session_info *v9ses; | |
2bad8471 | 595 | |
5d385153 JP |
596 | p9_debug(P9_DEBUG_VFS, "inode: %p dentry: %p rmdir: %x\n", |
597 | dir, dentry, flags); | |
2bad8471 | 598 | |
48e370ff | 599 | v9ses = v9fs_inode2v9ses(dir); |
2b0143b5 | 600 | inode = d_inode(dentry); |
77d5a6b7 | 601 | dfid = v9fs_parent_fid(dentry); |
48e370ff AK |
602 | if (IS_ERR(dfid)) { |
603 | retval = PTR_ERR(dfid); | |
5d385153 | 604 | p9_debug(P9_DEBUG_VFS, "fid lookup failed %d\n", retval); |
48e370ff AK |
605 | return retval; |
606 | } | |
607 | if (v9fs_proto_dotl(v9ses)) | |
f88657ce AK |
608 | retval = p9_client_unlinkat(dfid, dentry->d_name.name, |
609 | v9fs_at_to_dotl_flags(flags)); | |
48e370ff AK |
610 | if (retval == -EOPNOTSUPP) { |
611 | /* Try the one based on path */ | |
612 | v9fid = v9fs_fid_clone(dentry); | |
613 | if (IS_ERR(v9fid)) | |
614 | return PTR_ERR(v9fid); | |
615 | retval = p9_client_remove(v9fid); | |
616 | } | |
b271ec47 AK |
617 | if (!retval) { |
618 | /* | |
619 | * directories on unlink should have zero | |
620 | * link count | |
621 | */ | |
48e370ff AK |
622 | if (flags & AT_REMOVEDIR) { |
623 | clear_nlink(inode); | |
b271ec47 AK |
624 | drop_nlink(dir); |
625 | } else | |
48e370ff | 626 | drop_nlink(inode); |
d28c61f0 | 627 | |
48e370ff | 628 | v9fs_invalidate_inode_attr(inode); |
d28c61f0 | 629 | v9fs_invalidate_inode_attr(dir); |
b271ec47 | 630 | } |
d994f405 | 631 | return retval; |
2bad8471 EVH |
632 | } |
633 | ||
634 | /** | |
bd238fb4 | 635 | * v9fs_create - Create a file |
ee443996 EVH |
636 | * @v9ses: session information |
637 | * @dir: directory that dentry is being created in | |
bd238fb4 | 638 | * @dentry: dentry that is being created |
0e15597e | 639 | * @extension: 9p2000.u extension string to support devices, etc. |
bd238fb4 LI |
640 | * @perm: create permissions |
641 | * @mode: open mode | |
2bad8471 EVH |
642 | * |
643 | */ | |
bd238fb4 LI |
644 | static struct p9_fid * |
645 | v9fs_create(struct v9fs_session_info *v9ses, struct inode *dir, | |
646 | struct dentry *dentry, char *extension, u32 perm, u8 mode) | |
2bad8471 | 647 | { |
6a3124a3 | 648 | int err; |
7880b43b | 649 | const unsigned char *name; |
bd238fb4 | 650 | struct p9_fid *dfid, *ofid, *fid; |
6a3124a3 | 651 | struct inode *inode; |
6a3124a3 | 652 | |
4b8e9923 | 653 | p9_debug(P9_DEBUG_VFS, "name %pd\n", dentry); |
51a87c55 | 654 | |
bd238fb4 LI |
655 | err = 0; |
656 | ofid = NULL; | |
657 | fid = NULL; | |
7880b43b | 658 | name = dentry->d_name.name; |
77d5a6b7 | 659 | dfid = v9fs_parent_fid(dentry); |
ba17674f | 660 | if (IS_ERR(dfid)) { |
da977b2c | 661 | err = PTR_ERR(dfid); |
5d385153 | 662 | p9_debug(P9_DEBUG_VFS, "fid lookup failed %d\n", err); |
6d27e64d | 663 | return ERR_PTR(err); |
da977b2c | 664 | } |
6a3124a3 | 665 | |
bd238fb4 | 666 | /* clone a fid to use for creation */ |
7d50a29f | 667 | ofid = clone_fid(dfid); |
bd238fb4 LI |
668 | if (IS_ERR(ofid)) { |
669 | err = PTR_ERR(ofid); | |
5d385153 | 670 | p9_debug(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err); |
6d27e64d | 671 | return ERR_PTR(err); |
bd238fb4 | 672 | } |
6a3124a3 | 673 | |
bd238fb4 | 674 | err = p9_client_fcreate(ofid, name, perm, mode, extension); |
51a87c55 | 675 | if (err < 0) { |
5d385153 | 676 | p9_debug(P9_DEBUG_VFS, "p9_client_fcreate failed %d\n", err); |
6a3124a3 | 677 | goto error; |
6d27e64d | 678 | } |
6a3124a3 | 679 | |
b6054793 AK |
680 | if (!(perm & P9_DMLINK)) { |
681 | /* now walk from the parent so we can get unopened fid */ | |
682 | fid = p9_client_walk(dfid, 1, &name, 1); | |
683 | if (IS_ERR(fid)) { | |
684 | err = PTR_ERR(fid); | |
685 | p9_debug(P9_DEBUG_VFS, | |
686 | "p9_client_walk failed %d\n", err); | |
687 | fid = NULL; | |
688 | goto error; | |
689 | } | |
690 | /* | |
691 | * instantiate inode and assign the unopened fid to the dentry | |
692 | */ | |
693 | inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb); | |
694 | if (IS_ERR(inode)) { | |
695 | err = PTR_ERR(inode); | |
696 | p9_debug(P9_DEBUG_VFS, | |
697 | "inode creation failed %d\n", err); | |
698 | goto error; | |
699 | } | |
2ea03e1d | 700 | v9fs_fid_add(dentry, fid); |
b6054793 | 701 | d_instantiate(dentry, inode); |
6a3124a3 | 702 | } |
bd238fb4 | 703 | return ofid; |
bd238fb4 | 704 | error: |
bd238fb4 LI |
705 | if (ofid) |
706 | p9_client_clunk(ofid); | |
707 | ||
708 | if (fid) | |
709 | p9_client_clunk(fid); | |
710 | ||
711 | return ERR_PTR(err); | |
712 | } | |
713 | ||
714 | /** | |
e43ae79c MS |
715 | * v9fs_vfs_create - VFS hook to create a regular file |
716 | * | |
717 | * open(.., O_CREAT) is handled in v9fs_vfs_atomic_open(). This is only called | |
718 | * for mknod(2). | |
719 | * | |
ee443996 | 720 | * @dir: directory inode that is being created |
bd238fb4 LI |
721 | * @dentry: dentry that is being deleted |
722 | * @mode: create permissions | |
bd238fb4 LI |
723 | * |
724 | */ | |
6a3124a3 | 725 | |
bd238fb4 | 726 | static int |
4acdaf27 | 727 | v9fs_vfs_create(struct inode *dir, struct dentry *dentry, umode_t mode, |
ebfc3b49 | 728 | bool excl) |
bd238fb4 | 729 | { |
e43ae79c MS |
730 | struct v9fs_session_info *v9ses = v9fs_inode2v9ses(dir); |
731 | u32 perm = unixmode2p9mode(v9ses, mode); | |
732 | struct p9_fid *fid; | |
bd238fb4 | 733 | |
e43ae79c MS |
734 | /* P9_OEXCL? */ |
735 | fid = v9fs_create(v9ses, dir, dentry, NULL, perm, P9_ORDWR); | |
736 | if (IS_ERR(fid)) | |
737 | return PTR_ERR(fid); | |
bd238fb4 | 738 | |
d28c61f0 | 739 | v9fs_invalidate_inode_attr(dir); |
e43ae79c | 740 | p9_client_clunk(fid); |
6a3124a3 LI |
741 | |
742 | return 0; | |
2bad8471 EVH |
743 | } |
744 | ||
745 | /** | |
746 | * v9fs_vfs_mkdir - VFS mkdir hook to create a directory | |
ee443996 | 747 | * @dir: inode that is being unlinked |
2bad8471 EVH |
748 | * @dentry: dentry that is being unlinked |
749 | * @mode: mode for new directory | |
750 | * | |
751 | */ | |
752 | ||
18bb1db3 | 753 | static int v9fs_vfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) |
2bad8471 | 754 | { |
6a3124a3 | 755 | int err; |
bd238fb4 | 756 | u32 perm; |
bd238fb4 | 757 | struct p9_fid *fid; |
d28c61f0 | 758 | struct v9fs_session_info *v9ses; |
6a3124a3 | 759 | |
4b8e9923 | 760 | p9_debug(P9_DEBUG_VFS, "name %pd\n", dentry); |
bd238fb4 | 761 | err = 0; |
6a3124a3 | 762 | v9ses = v9fs_inode2v9ses(dir); |
6a3124a3 | 763 | perm = unixmode2p9mode(v9ses, mode | S_IFDIR); |
bd238fb4 LI |
764 | fid = v9fs_create(v9ses, dir, dentry, NULL, perm, P9_OREAD); |
765 | if (IS_ERR(fid)) { | |
766 | err = PTR_ERR(fid); | |
767 | fid = NULL; | |
d28c61f0 | 768 | } else { |
b271ec47 | 769 | inc_nlink(dir); |
d28c61f0 AK |
770 | v9fs_invalidate_inode_attr(dir); |
771 | } | |
6a3124a3 | 772 | |
bd238fb4 LI |
773 | if (fid) |
774 | p9_client_clunk(fid); | |
6a3124a3 | 775 | |
6a3124a3 | 776 | return err; |
2bad8471 EVH |
777 | } |
778 | ||
779 | /** | |
780 | * v9fs_vfs_lookup - VFS lookup hook to "walk" to a new inode | |
781 | * @dir: inode that is being walked from | |
782 | * @dentry: dentry that is being walked to? | |
fd2916bd | 783 | * @flags: lookup flags (unused) |
2bad8471 EVH |
784 | * |
785 | */ | |
786 | ||
53c06f4e | 787 | struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry, |
00cd8dd3 | 788 | unsigned int flags) |
2bad8471 | 789 | { |
73f50717 | 790 | struct dentry *res; |
2bad8471 | 791 | struct v9fs_session_info *v9ses; |
bd238fb4 | 792 | struct p9_fid *dfid, *fid; |
2bad8471 | 793 | struct inode *inode; |
7880b43b | 794 | const unsigned char *name; |
2bad8471 | 795 | |
4b8e9923 AV |
796 | p9_debug(P9_DEBUG_VFS, "dir: %p dentry: (%pd) %p flags: %x\n", |
797 | dir, dentry, dentry, flags); | |
2bad8471 | 798 | |
11e9b49b SK |
799 | if (dentry->d_name.len > NAME_MAX) |
800 | return ERR_PTR(-ENAMETOOLONG); | |
801 | ||
2bad8471 | 802 | v9ses = v9fs_inode2v9ses(dir); |
a534c8d1 | 803 | /* We can walk d_parent because we hold the dir->i_mutex */ |
77d5a6b7 | 804 | dfid = v9fs_parent_fid(dentry); |
bd238fb4 | 805 | if (IS_ERR(dfid)) |
e231c2ee | 806 | return ERR_CAST(dfid); |
bd238fb4 | 807 | |
7880b43b | 808 | name = dentry->d_name.name; |
bd238fb4 LI |
809 | fid = p9_client_walk(dfid, 1, &name, 1); |
810 | if (IS_ERR(fid)) { | |
7b5be621 AV |
811 | if (fid == ERR_PTR(-ENOENT)) { |
812 | d_add(dentry, NULL); | |
813 | return NULL; | |
2bad8471 | 814 | } |
7b5be621 | 815 | return ERR_CAST(fid); |
2bad8471 | 816 | } |
73f50717 AK |
817 | /* |
818 | * Make sure we don't use a wrong inode due to parallel | |
819 | * unlink. For cached mode create calls request for new | |
820 | * inode. But with cache disabled, lookup should do this. | |
821 | */ | |
fb89b45c | 822 | if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) |
73f50717 AK |
823 | inode = v9fs_get_inode_from_fid(v9ses, fid, dir->i_sb); |
824 | else | |
825 | inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb); | |
bd238fb4 | 826 | if (IS_ERR(inode)) { |
7b5be621 AV |
827 | p9_client_clunk(fid); |
828 | return ERR_CAST(inode); | |
2bad8471 | 829 | } |
73f50717 AK |
830 | /* |
831 | * If we had a rename on the server and a parallel lookup | |
832 | * for the new name, then make sure we instantiate with | |
833 | * the new name. ie look up for a/b, while on server somebody | |
834 | * moved b under k and client parallely did a lookup for | |
835 | * k/b. | |
836 | */ | |
41d28bca | 837 | res = d_splice_alias(inode, dentry); |
a3b2157e AV |
838 | if (!res) |
839 | v9fs_fid_add(dentry, fid); | |
840 | else if (!IS_ERR(res)) | |
841 | v9fs_fid_add(res, fid); | |
842 | else | |
7b5be621 AV |
843 | p9_client_clunk(fid); |
844 | return res; | |
2bad8471 EVH |
845 | } |
846 | ||
d9585277 | 847 | static int |
e43ae79c | 848 | v9fs_vfs_atomic_open(struct inode *dir, struct dentry *dentry, |
30d90494 | 849 | struct file *file, unsigned flags, umode_t mode, |
47237687 | 850 | int *opened) |
e43ae79c MS |
851 | { |
852 | int err; | |
853 | u32 perm; | |
e43ae79c MS |
854 | struct v9fs_inode *v9inode; |
855 | struct v9fs_session_info *v9ses; | |
856 | struct p9_fid *fid, *inode_fid; | |
857 | struct dentry *res = NULL; | |
858 | ||
00699ad8 | 859 | if (d_in_lookup(dentry)) { |
00cd8dd3 | 860 | res = v9fs_vfs_lookup(dir, dentry, 0); |
e43ae79c | 861 | if (IS_ERR(res)) |
d9585277 | 862 | return PTR_ERR(res); |
e43ae79c MS |
863 | |
864 | if (res) | |
865 | dentry = res; | |
866 | } | |
867 | ||
868 | /* Only creates */ | |
2b0143b5 | 869 | if (!(flags & O_CREAT) || d_really_is_positive(dentry)) |
e45198a6 | 870 | return finish_no_open(file, res); |
e43ae79c MS |
871 | |
872 | err = 0; | |
fae74696 | 873 | |
e43ae79c MS |
874 | v9ses = v9fs_inode2v9ses(dir); |
875 | perm = unixmode2p9mode(v9ses, mode); | |
876 | fid = v9fs_create(v9ses, dir, dentry, NULL, perm, | |
877 | v9fs_uflags2omode(flags, | |
878 | v9fs_proto_dotu(v9ses))); | |
879 | if (IS_ERR(fid)) { | |
880 | err = PTR_ERR(fid); | |
881 | fid = NULL; | |
882 | goto error; | |
883 | } | |
884 | ||
885 | v9fs_invalidate_inode_attr(dir); | |
2b0143b5 | 886 | v9inode = V9FS_I(d_inode(dentry)); |
e43ae79c | 887 | mutex_lock(&v9inode->v_mutex); |
fb89b45c DM |
888 | if ((v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) && |
889 | !v9inode->writeback_fid && | |
e43ae79c MS |
890 | ((flags & O_ACCMODE) != O_RDONLY)) { |
891 | /* | |
892 | * clone a fid and add it to writeback_fid | |
893 | * we do it during open time instead of | |
894 | * page dirty time via write_begin/page_mkwrite | |
895 | * because we want write after unlink usecase | |
896 | * to work. | |
897 | */ | |
898 | inode_fid = v9fs_writeback_fid(dentry); | |
899 | if (IS_ERR(inode_fid)) { | |
900 | err = PTR_ERR(inode_fid); | |
901 | mutex_unlock(&v9inode->v_mutex); | |
902 | goto error; | |
903 | } | |
904 | v9inode->writeback_fid = (void *) inode_fid; | |
905 | } | |
906 | mutex_unlock(&v9inode->v_mutex); | |
30d90494 AV |
907 | err = finish_open(file, dentry, generic_file_open, opened); |
908 | if (err) | |
e43ae79c | 909 | goto error; |
e43ae79c | 910 | |
30d90494 | 911 | file->private_data = fid; |
fb89b45c | 912 | if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) |
2b0143b5 | 913 | v9fs_cache_inode_set_cookie(d_inode(dentry), file); |
e43ae79c | 914 | |
47237687 | 915 | *opened |= FILE_CREATED; |
e43ae79c MS |
916 | out: |
917 | dput(res); | |
d9585277 | 918 | return err; |
e43ae79c MS |
919 | |
920 | error: | |
921 | if (fid) | |
922 | p9_client_clunk(fid); | |
e43ae79c MS |
923 | goto out; |
924 | } | |
925 | ||
2bad8471 EVH |
926 | /** |
927 | * v9fs_vfs_unlink - VFS unlink hook to delete an inode | |
928 | * @i: inode that is being unlinked | |
73c592b9 | 929 | * @d: dentry that is being unlinked |
2bad8471 EVH |
930 | * |
931 | */ | |
932 | ||
53c06f4e | 933 | int v9fs_vfs_unlink(struct inode *i, struct dentry *d) |
2bad8471 EVH |
934 | { |
935 | return v9fs_remove(i, d, 0); | |
936 | } | |
937 | ||
938 | /** | |
939 | * v9fs_vfs_rmdir - VFS unlink hook to delete a directory | |
940 | * @i: inode that is being unlinked | |
73c592b9 | 941 | * @d: dentry that is being unlinked |
2bad8471 EVH |
942 | * |
943 | */ | |
944 | ||
53c06f4e | 945 | int v9fs_vfs_rmdir(struct inode *i, struct dentry *d) |
2bad8471 | 946 | { |
48e370ff | 947 | return v9fs_remove(i, d, AT_REMOVEDIR); |
2bad8471 EVH |
948 | } |
949 | ||
950 | /** | |
951 | * v9fs_vfs_rename - VFS hook to rename an inode | |
952 | * @old_dir: old dir inode | |
953 | * @old_dentry: old dentry | |
954 | * @new_dir: new dir inode | |
955 | * @new_dentry: new dentry | |
956 | * | |
957 | */ | |
958 | ||
53c06f4e | 959 | int |
2bad8471 | 960 | v9fs_vfs_rename(struct inode *old_dir, struct dentry *old_dentry, |
1cd66c93 MS |
961 | struct inode *new_dir, struct dentry *new_dentry, |
962 | unsigned int flags) | |
2bad8471 | 963 | { |
d28c61f0 | 964 | int retval; |
bd238fb4 | 965 | struct inode *old_inode; |
b271ec47 | 966 | struct inode *new_inode; |
bd238fb4 LI |
967 | struct v9fs_session_info *v9ses; |
968 | struct p9_fid *oldfid; | |
969 | struct p9_fid *olddirfid; | |
970 | struct p9_fid *newdirfid; | |
971 | struct p9_wstat wstat; | |
2bad8471 | 972 | |
1cd66c93 MS |
973 | if (flags) |
974 | return -EINVAL; | |
975 | ||
5d385153 | 976 | p9_debug(P9_DEBUG_VFS, "\n"); |
bd238fb4 | 977 | retval = 0; |
2b0143b5 DH |
978 | old_inode = d_inode(old_dentry); |
979 | new_inode = d_inode(new_dentry); | |
bd238fb4 LI |
980 | v9ses = v9fs_inode2v9ses(old_inode); |
981 | oldfid = v9fs_fid_lookup(old_dentry); | |
ba17674f | 982 | if (IS_ERR(oldfid)) |
da977b2c EVH |
983 | return PTR_ERR(oldfid); |
984 | ||
797fc16d | 985 | olddirfid = clone_fid(v9fs_parent_fid(old_dentry)); |
ba17674f | 986 | if (IS_ERR(olddirfid)) { |
da977b2c | 987 | retval = PTR_ERR(olddirfid); |
bd238fb4 | 988 | goto done; |
da977b2c EVH |
989 | } |
990 | ||
797fc16d | 991 | newdirfid = clone_fid(v9fs_parent_fid(new_dentry)); |
ba17674f | 992 | if (IS_ERR(newdirfid)) { |
da977b2c | 993 | retval = PTR_ERR(newdirfid); |
bd238fb4 | 994 | goto clunk_olddir; |
2bad8471 EVH |
995 | } |
996 | ||
a534c8d1 | 997 | down_write(&v9ses->rename_sem); |
4681dbda | 998 | if (v9fs_proto_dotl(v9ses)) { |
9e8fb38e AK |
999 | retval = p9_client_renameat(olddirfid, old_dentry->d_name.name, |
1000 | newdirfid, new_dentry->d_name.name); | |
1001 | if (retval == -EOPNOTSUPP) | |
1002 | retval = p9_client_rename(oldfid, newdirfid, | |
1003 | new_dentry->d_name.name); | |
1004 | if (retval != -EOPNOTSUPP) | |
4681dbda SK |
1005 | goto clunk_newdir; |
1006 | } | |
a534c8d1 AK |
1007 | if (old_dentry->d_parent != new_dentry->d_parent) { |
1008 | /* | |
1009 | * 9P .u can only handle file rename in the same directory | |
1010 | */ | |
4681dbda | 1011 | |
5d385153 | 1012 | p9_debug(P9_DEBUG_ERROR, "old dir and new dir are different\n"); |
621997cd | 1013 | retval = -EXDEV; |
bd238fb4 | 1014 | goto clunk_newdir; |
2bad8471 | 1015 | } |
531b1094 | 1016 | v9fs_blank_wstat(&wstat); |
ba17674f | 1017 | wstat.muid = v9ses->uname; |
7880b43b | 1018 | wstat.name = new_dentry->d_name.name; |
bd238fb4 | 1019 | retval = p9_client_wstat(oldfid, &wstat); |
2bad8471 | 1020 | |
bd238fb4 | 1021 | clunk_newdir: |
b271ec47 AK |
1022 | if (!retval) { |
1023 | if (new_inode) { | |
1024 | if (S_ISDIR(new_inode->i_mode)) | |
1025 | clear_nlink(new_inode); | |
1026 | else | |
1027 | drop_nlink(new_inode); | |
1028 | } | |
1029 | if (S_ISDIR(old_inode->i_mode)) { | |
1030 | if (!new_inode) | |
1031 | inc_nlink(new_dir); | |
1032 | drop_nlink(old_dir); | |
1033 | } | |
3bc86de3 | 1034 | v9fs_invalidate_inode_attr(old_inode); |
d28c61f0 AK |
1035 | v9fs_invalidate_inode_attr(old_dir); |
1036 | v9fs_invalidate_inode_attr(new_dir); | |
3bc86de3 | 1037 | |
a534c8d1 AK |
1038 | /* successful rename */ |
1039 | d_move(old_dentry, new_dentry); | |
b271ec47 | 1040 | } |
a534c8d1 | 1041 | up_write(&v9ses->rename_sem); |
22150c4f | 1042 | p9_client_clunk(newdirfid); |
2bad8471 | 1043 | |
bd238fb4 | 1044 | clunk_olddir: |
22150c4f | 1045 | p9_client_clunk(olddirfid); |
da977b2c | 1046 | |
bd238fb4 | 1047 | done: |
2bad8471 EVH |
1048 | return retval; |
1049 | } | |
1050 | ||
1051 | /** | |
943ffb58 | 1052 | * v9fs_vfs_getattr - retrieve file metadata |
a528d35e | 1053 | * @path: Object to query |
ee443996 | 1054 | * @stat: metadata structure to populate |
a528d35e DH |
1055 | * @request_mask: Mask of STATX_xxx flags indicating the caller's interests |
1056 | * @flags: AT_STATX_xxx setting | |
2bad8471 EVH |
1057 | * |
1058 | */ | |
1059 | ||
1060 | static int | |
a528d35e DH |
1061 | v9fs_vfs_getattr(const struct path *path, struct kstat *stat, |
1062 | u32 request_mask, unsigned int flags) | |
2bad8471 | 1063 | { |
a528d35e | 1064 | struct dentry *dentry = path->dentry; |
bd238fb4 LI |
1065 | struct v9fs_session_info *v9ses; |
1066 | struct p9_fid *fid; | |
51a87c55 | 1067 | struct p9_wstat *st; |
bd238fb4 | 1068 | |
5d385153 | 1069 | p9_debug(P9_DEBUG_VFS, "dentry: %p\n", dentry); |
42869c8a | 1070 | v9ses = v9fs_dentry2v9ses(dentry); |
a1211908 | 1071 | if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) { |
2b0143b5 | 1072 | generic_fillattr(d_inode(dentry), stat); |
a1211908 AK |
1073 | return 0; |
1074 | } | |
bd238fb4 LI |
1075 | fid = v9fs_fid_lookup(dentry); |
1076 | if (IS_ERR(fid)) | |
da977b2c | 1077 | return PTR_ERR(fid); |
2bad8471 | 1078 | |
bd238fb4 LI |
1079 | st = p9_client_stat(fid); |
1080 | if (IS_ERR(st)) | |
1081 | return PTR_ERR(st); | |
2bad8471 | 1082 | |
fc64005c | 1083 | v9fs_stat2inode(st, d_inode(dentry), dentry->d_sb); |
2b0143b5 | 1084 | generic_fillattr(d_inode(dentry), stat); |
2bad8471 | 1085 | |
62b2be59 | 1086 | p9stat_free(st); |
bd238fb4 LI |
1087 | kfree(st); |
1088 | return 0; | |
2bad8471 EVH |
1089 | } |
1090 | ||
1091 | /** | |
1092 | * v9fs_vfs_setattr - set file metadata | |
1093 | * @dentry: file whose metadata to set | |
1094 | * @iattr: metadata assignment structure | |
1095 | * | |
1096 | */ | |
1097 | ||
1098 | static int v9fs_vfs_setattr(struct dentry *dentry, struct iattr *iattr) | |
1099 | { | |
bd238fb4 LI |
1100 | int retval; |
1101 | struct v9fs_session_info *v9ses; | |
1102 | struct p9_fid *fid; | |
1103 | struct p9_wstat wstat; | |
2bad8471 | 1104 | |
5d385153 | 1105 | p9_debug(P9_DEBUG_VFS, "\n"); |
31051c85 | 1106 | retval = setattr_prepare(dentry, iattr); |
059c138b AK |
1107 | if (retval) |
1108 | return retval; | |
1109 | ||
bd238fb4 | 1110 | retval = -EPERM; |
42869c8a | 1111 | v9ses = v9fs_dentry2v9ses(dentry); |
bd238fb4 | 1112 | fid = v9fs_fid_lookup(dentry); |
da977b2c EVH |
1113 | if(IS_ERR(fid)) |
1114 | return PTR_ERR(fid); | |
2bad8471 | 1115 | |
531b1094 | 1116 | v9fs_blank_wstat(&wstat); |
2bad8471 | 1117 | if (iattr->ia_valid & ATTR_MODE) |
531b1094 | 1118 | wstat.mode = unixmode2p9mode(v9ses, iattr->ia_mode); |
2bad8471 EVH |
1119 | |
1120 | if (iattr->ia_valid & ATTR_MTIME) | |
531b1094 | 1121 | wstat.mtime = iattr->ia_mtime.tv_sec; |
2bad8471 EVH |
1122 | |
1123 | if (iattr->ia_valid & ATTR_ATIME) | |
531b1094 | 1124 | wstat.atime = iattr->ia_atime.tv_sec; |
2bad8471 EVH |
1125 | |
1126 | if (iattr->ia_valid & ATTR_SIZE) | |
531b1094 | 1127 | wstat.length = iattr->ia_size; |
2bad8471 | 1128 | |
dd6102fb | 1129 | if (v9fs_proto_dotu(v9ses)) { |
531b1094 LI |
1130 | if (iattr->ia_valid & ATTR_UID) |
1131 | wstat.n_uid = iattr->ia_uid; | |
2bad8471 | 1132 | |
531b1094 LI |
1133 | if (iattr->ia_valid & ATTR_GID) |
1134 | wstat.n_gid = iattr->ia_gid; | |
2bad8471 | 1135 | } |
059c138b | 1136 | |
3dc5436a | 1137 | /* Write all dirty data */ |
e36cb0b8 | 1138 | if (d_is_reg(dentry)) |
2b0143b5 | 1139 | filemap_write_and_wait(d_inode(dentry)->i_mapping); |
3dc5436a | 1140 | |
f10fc50f AK |
1141 | retval = p9_client_wstat(fid, &wstat); |
1142 | if (retval < 0) | |
1143 | return retval; | |
059c138b AK |
1144 | |
1145 | if ((iattr->ia_valid & ATTR_SIZE) && | |
2b0143b5 DH |
1146 | iattr->ia_size != i_size_read(d_inode(dentry))) |
1147 | truncate_setsize(d_inode(dentry), iattr->ia_size); | |
059c138b | 1148 | |
2b0143b5 | 1149 | v9fs_invalidate_inode_attr(d_inode(dentry)); |
2bad8471 | 1150 | |
2b0143b5 DH |
1151 | setattr_copy(d_inode(dentry), iattr); |
1152 | mark_inode_dirty(d_inode(dentry)); | |
1025774c | 1153 | return 0; |
2bad8471 EVH |
1154 | } |
1155 | ||
1156 | /** | |
531b1094 LI |
1157 | * v9fs_stat2inode - populate an inode structure with mistat info |
1158 | * @stat: Plan 9 metadata (mistat) structure | |
2bad8471 EVH |
1159 | * @inode: inode to populate |
1160 | * @sb: superblock of filesystem | |
1161 | * | |
1162 | */ | |
1163 | ||
1164 | void | |
51a87c55 | 1165 | v9fs_stat2inode(struct p9_wstat *stat, struct inode *inode, |
531b1094 | 1166 | struct super_block *sb) |
2bad8471 | 1167 | { |
3eda0de6 | 1168 | umode_t mode; |
531b1094 | 1169 | char ext[32]; |
5717144a AK |
1170 | char tag_name[14]; |
1171 | unsigned int i_nlink; | |
2bad8471 | 1172 | struct v9fs_session_info *v9ses = sb->s_fs_info; |
b3cbea03 | 1173 | struct v9fs_inode *v9inode = V9FS_I(inode); |
2bad8471 | 1174 | |
bfe86848 | 1175 | set_nlink(inode, 1); |
2bad8471 | 1176 | |
531b1094 LI |
1177 | inode->i_atime.tv_sec = stat->atime; |
1178 | inode->i_mtime.tv_sec = stat->mtime; | |
1179 | inode->i_ctime.tv_sec = stat->mtime; | |
2bad8471 | 1180 | |
bd32b82d LI |
1181 | inode->i_uid = v9ses->dfltuid; |
1182 | inode->i_gid = v9ses->dfltgid; | |
2bad8471 | 1183 | |
dd6102fb | 1184 | if (v9fs_proto_dotu(v9ses)) { |
531b1094 LI |
1185 | inode->i_uid = stat->n_uid; |
1186 | inode->i_gid = stat->n_gid; | |
2bad8471 | 1187 | } |
5717144a AK |
1188 | if ((S_ISREG(inode->i_mode)) || (S_ISDIR(inode->i_mode))) { |
1189 | if (v9fs_proto_dotu(v9ses) && (stat->extension[0] != '\0')) { | |
1190 | /* | |
1191 | * Hadlink support got added later to | |
1192 | * to the .u extension. So there can be | |
1193 | * server out there that doesn't support | |
1194 | * this even with .u extension. So check | |
1195 | * for non NULL stat->extension | |
1196 | */ | |
b3f8ab4b | 1197 | strlcpy(ext, stat->extension, sizeof(ext)); |
5717144a AK |
1198 | /* HARDLINKCOUNT %u */ |
1199 | sscanf(ext, "%13s %u", tag_name, &i_nlink); | |
1200 | if (!strncmp(tag_name, "HARDLINKCOUNT", 13)) | |
bfe86848 | 1201 | set_nlink(inode, i_nlink); |
5717144a AK |
1202 | } |
1203 | } | |
df345c67 | 1204 | mode = p9mode2perm(v9ses, stat); |
45089142 AK |
1205 | mode |= inode->i_mode & ~S_IALLUGO; |
1206 | inode->i_mode = mode; | |
7549ae3e | 1207 | i_size_write(inode, stat->length); |
2bad8471 | 1208 | |
bd238fb4 | 1209 | /* not real number of blocks, but 512 byte ones ... */ |
7549ae3e | 1210 | inode->i_blocks = (i_size_read(inode) + 512 - 1) >> 9; |
b3cbea03 | 1211 | v9inode->cache_validity &= ~V9FS_INO_INVALID_ATTR; |
2bad8471 EVH |
1212 | } |
1213 | ||
1214 | /** | |
1215 | * v9fs_qid2ino - convert qid into inode number | |
1216 | * @qid: qid to hash | |
1217 | * | |
1218 | * BUG: potential for inode number collisions? | |
1219 | */ | |
1220 | ||
bd238fb4 | 1221 | ino_t v9fs_qid2ino(struct p9_qid *qid) |
2bad8471 EVH |
1222 | { |
1223 | u64 path = qid->path + 2; | |
1224 | ino_t i = 0; | |
1225 | ||
1226 | if (sizeof(ino_t) == sizeof(path)) | |
1227 | memcpy(&i, &path, sizeof(ino_t)); | |
1228 | else | |
1229 | i = (ino_t) (path ^ (path >> 32)); | |
1230 | ||
1231 | return i; | |
1232 | } | |
1233 | ||
2bad8471 | 1234 | /** |
6b255391 | 1235 | * v9fs_vfs_get_link - follow a symlink path |
2bad8471 | 1236 | * @dentry: dentry for symlink |
6b255391 | 1237 | * @inode: inode for symlink |
fceef393 | 1238 | * @done: delayed call for when we are done with the return value |
2bad8471 EVH |
1239 | */ |
1240 | ||
6b255391 | 1241 | static const char *v9fs_vfs_get_link(struct dentry *dentry, |
fceef393 AV |
1242 | struct inode *inode, |
1243 | struct delayed_call *done) | |
2bad8471 | 1244 | { |
6b255391 AV |
1245 | struct v9fs_session_info *v9ses; |
1246 | struct p9_fid *fid; | |
51a87c55 | 1247 | struct p9_wstat *st; |
680baacb | 1248 | char *res; |
2bad8471 | 1249 | |
6b255391 AV |
1250 | if (!dentry) |
1251 | return ERR_PTR(-ECHILD); | |
1252 | ||
1253 | v9ses = v9fs_dentry2v9ses(dentry); | |
1254 | fid = v9fs_fid_lookup(dentry); | |
90e4fc88 AV |
1255 | p9_debug(P9_DEBUG_VFS, "%pd\n", dentry); |
1256 | ||
ba17674f | 1257 | if (IS_ERR(fid)) |
90e4fc88 | 1258 | return ERR_CAST(fid); |
2bad8471 | 1259 | |
329176cc | 1260 | if (!v9fs_proto_dotu(v9ses)) |
90e4fc88 | 1261 | return ERR_PTR(-EBADF); |
2bad8471 | 1262 | |
bd238fb4 LI |
1263 | st = p9_client_stat(fid); |
1264 | if (IS_ERR(st)) | |
90e4fc88 | 1265 | return ERR_CAST(st); |
2bad8471 | 1266 | |
bd238fb4 | 1267 | if (!(st->mode & P9_DMSYMLINK)) { |
90e4fc88 AV |
1268 | p9stat_free(st); |
1269 | kfree(st); | |
1270 | return ERR_PTR(-EINVAL); | |
2bad8471 | 1271 | } |
680baacb | 1272 | res = st->extension; |
90e4fc88 | 1273 | st->extension = NULL; |
680baacb AV |
1274 | if (strlen(res) >= PATH_MAX) |
1275 | res[PATH_MAX - 1] = '\0'; | |
1276 | ||
62b2be59 | 1277 | p9stat_free(st); |
bd238fb4 | 1278 | kfree(st); |
fceef393 AV |
1279 | set_delayed_call(done, kfree_link, res); |
1280 | return res; | |
2bad8471 EVH |
1281 | } |
1282 | ||
ee443996 EVH |
1283 | /** |
1284 | * v9fs_vfs_mkspecial - create a special file | |
1285 | * @dir: inode to create special file in | |
1286 | * @dentry: dentry to create | |
fd2916bd | 1287 | * @perm: mode to create special file |
ee443996 EVH |
1288 | * @extension: 9p2000.u format extension string representing special file |
1289 | * | |
1290 | */ | |
1291 | ||
531b1094 | 1292 | static int v9fs_vfs_mkspecial(struct inode *dir, struct dentry *dentry, |
c2837de7 | 1293 | u32 perm, const char *extension) |
2bad8471 | 1294 | { |
bd238fb4 | 1295 | struct p9_fid *fid; |
d28c61f0 | 1296 | struct v9fs_session_info *v9ses; |
2bad8471 | 1297 | |
6a3124a3 | 1298 | v9ses = v9fs_inode2v9ses(dir); |
dd6102fb | 1299 | if (!v9fs_proto_dotu(v9ses)) { |
5d385153 | 1300 | p9_debug(P9_DEBUG_ERROR, "not extended\n"); |
6a3124a3 | 1301 | return -EPERM; |
2bad8471 EVH |
1302 | } |
1303 | ||
bd238fb4 LI |
1304 | fid = v9fs_create(v9ses, dir, dentry, (char *) extension, perm, |
1305 | P9_OREAD); | |
1306 | if (IS_ERR(fid)) | |
1307 | return PTR_ERR(fid); | |
da977b2c | 1308 | |
d28c61f0 | 1309 | v9fs_invalidate_inode_attr(dir); |
bd238fb4 | 1310 | p9_client_clunk(fid); |
6a3124a3 | 1311 | return 0; |
531b1094 LI |
1312 | } |
1313 | ||
1314 | /** | |
1315 | * v9fs_vfs_symlink - helper function to create symlinks | |
1316 | * @dir: directory inode containing symlink | |
1317 | * @dentry: dentry for symlink | |
1318 | * @symname: symlink data | |
1319 | * | |
ee443996 | 1320 | * See Also: 9P2000.u RFC for more information |
531b1094 LI |
1321 | * |
1322 | */ | |
1323 | ||
1324 | static int | |
1325 | v9fs_vfs_symlink(struct inode *dir, struct dentry *dentry, const char *symname) | |
1326 | { | |
4b8e9923 AV |
1327 | p9_debug(P9_DEBUG_VFS, " %lu,%pd,%s\n", |
1328 | dir->i_ino, dentry, symname); | |
531b1094 | 1329 | |
c2837de7 | 1330 | return v9fs_vfs_mkspecial(dir, dentry, P9_DMSYMLINK, symname); |
531b1094 LI |
1331 | } |
1332 | ||
b46c267e AV |
1333 | #define U32_MAX_DIGITS 10 |
1334 | ||
531b1094 LI |
1335 | /** |
1336 | * v9fs_vfs_link - create a hardlink | |
1337 | * @old_dentry: dentry for file to link to | |
1338 | * @dir: inode destination for new link | |
1339 | * @dentry: dentry for link | |
1340 | * | |
1341 | */ | |
1342 | ||
531b1094 LI |
1343 | static int |
1344 | v9fs_vfs_link(struct dentry *old_dentry, struct inode *dir, | |
1345 | struct dentry *dentry) | |
1346 | { | |
1347 | int retval; | |
b46c267e | 1348 | char name[1 + U32_MAX_DIGITS + 2]; /* sign + number + \n + \0 */ |
d28c61f0 | 1349 | struct p9_fid *oldfid; |
531b1094 | 1350 | |
4b8e9923 AV |
1351 | p9_debug(P9_DEBUG_VFS, " %lu,%pd,%pd\n", |
1352 | dir->i_ino, dentry, old_dentry); | |
531b1094 | 1353 | |
da977b2c | 1354 | oldfid = v9fs_fid_clone(old_dentry); |
ba17674f | 1355 | if (IS_ERR(oldfid)) |
da977b2c | 1356 | return PTR_ERR(oldfid); |
531b1094 | 1357 | |
16cce6d2 | 1358 | sprintf(name, "%d\n", oldfid->fid); |
bd238fb4 | 1359 | retval = v9fs_vfs_mkspecial(dir, dentry, P9_DMLINK, name); |
c06c066a | 1360 | if (!retval) { |
2b0143b5 | 1361 | v9fs_refresh_inode(oldfid, d_inode(old_dentry)); |
d28c61f0 | 1362 | v9fs_invalidate_inode_attr(dir); |
c06c066a | 1363 | } |
bd238fb4 | 1364 | p9_client_clunk(oldfid); |
2bad8471 EVH |
1365 | return retval; |
1366 | } | |
1367 | ||
1368 | /** | |
1369 | * v9fs_vfs_mknod - create a special file | |
1370 | * @dir: inode destination for new link | |
1371 | * @dentry: dentry for file | |
1372 | * @mode: mode for creation | |
ee443996 | 1373 | * @rdev: device associated with special file |
2bad8471 EVH |
1374 | * |
1375 | */ | |
1376 | ||
1377 | static int | |
1a67aafb | 1378 | v9fs_vfs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t rdev) |
2bad8471 | 1379 | { |
c2837de7 | 1380 | struct v9fs_session_info *v9ses = v9fs_inode2v9ses(dir); |
531b1094 | 1381 | int retval; |
b46c267e | 1382 | char name[2 + U32_MAX_DIGITS + 1 + U32_MAX_DIGITS + 1]; |
c2837de7 | 1383 | u32 perm; |
2bad8471 | 1384 | |
4b8e9923 AV |
1385 | p9_debug(P9_DEBUG_VFS, " %lu,%pd mode: %hx MAJOR: %u MINOR: %u\n", |
1386 | dir->i_ino, dentry, mode, | |
5d385153 | 1387 | MAJOR(rdev), MINOR(rdev)); |
2bad8471 | 1388 | |
2bad8471 EVH |
1389 | /* build extension */ |
1390 | if (S_ISBLK(mode)) | |
531b1094 | 1391 | sprintf(name, "b %u %u", MAJOR(rdev), MINOR(rdev)); |
2bad8471 | 1392 | else if (S_ISCHR(mode)) |
531b1094 | 1393 | sprintf(name, "c %u %u", MAJOR(rdev), MINOR(rdev)); |
b46c267e | 1394 | else |
75cc5c9b | 1395 | *name = 0; |
2bad8471 | 1396 | |
c2837de7 AV |
1397 | perm = unixmode2p9mode(v9ses, mode); |
1398 | retval = v9fs_vfs_mkspecial(dir, dentry, perm, name); | |
2bad8471 EVH |
1399 | |
1400 | return retval; | |
1401 | } | |
1402 | ||
b3cbea03 AK |
1403 | int v9fs_refresh_inode(struct p9_fid *fid, struct inode *inode) |
1404 | { | |
45089142 AK |
1405 | int umode; |
1406 | dev_t rdev; | |
b3cbea03 AK |
1407 | loff_t i_size; |
1408 | struct p9_wstat *st; | |
1409 | struct v9fs_session_info *v9ses; | |
1410 | ||
1411 | v9ses = v9fs_inode2v9ses(inode); | |
1412 | st = p9_client_stat(fid); | |
1413 | if (IS_ERR(st)) | |
1414 | return PTR_ERR(st); | |
45089142 AK |
1415 | /* |
1416 | * Don't update inode if the file type is different | |
1417 | */ | |
1418 | umode = p9mode2unixmode(v9ses, st, &rdev); | |
1419 | if ((inode->i_mode & S_IFMT) != (umode & S_IFMT)) | |
1420 | goto out; | |
b3cbea03 AK |
1421 | |
1422 | spin_lock(&inode->i_lock); | |
1423 | /* | |
1424 | * We don't want to refresh inode->i_size, | |
1425 | * because we may have cached data | |
1426 | */ | |
1427 | i_size = inode->i_size; | |
1428 | v9fs_stat2inode(st, inode, inode->i_sb); | |
fb89b45c | 1429 | if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) |
b3cbea03 AK |
1430 | inode->i_size = i_size; |
1431 | spin_unlock(&inode->i_lock); | |
45089142 | 1432 | out: |
b3cbea03 AK |
1433 | p9stat_free(st); |
1434 | kfree(st); | |
1435 | return 0; | |
1436 | } | |
1437 | ||
9b6533c9 SK |
1438 | static const struct inode_operations v9fs_dir_inode_operations_dotu = { |
1439 | .create = v9fs_vfs_create, | |
1440 | .lookup = v9fs_vfs_lookup, | |
e43ae79c | 1441 | .atomic_open = v9fs_vfs_atomic_open, |
9b6533c9 | 1442 | .symlink = v9fs_vfs_symlink, |
50cc42ff | 1443 | .link = v9fs_vfs_link, |
9b6533c9 SK |
1444 | .unlink = v9fs_vfs_unlink, |
1445 | .mkdir = v9fs_vfs_mkdir, | |
1446 | .rmdir = v9fs_vfs_rmdir, | |
1d76e313 | 1447 | .mknod = v9fs_vfs_mknod, |
9b6533c9 SK |
1448 | .rename = v9fs_vfs_rename, |
1449 | .getattr = v9fs_vfs_getattr, | |
1450 | .setattr = v9fs_vfs_setattr, | |
1451 | }; | |
1452 | ||
754661f1 | 1453 | static const struct inode_operations v9fs_dir_inode_operations = { |
b501611a EVH |
1454 | .create = v9fs_vfs_create, |
1455 | .lookup = v9fs_vfs_lookup, | |
e43ae79c | 1456 | .atomic_open = v9fs_vfs_atomic_open, |
b501611a EVH |
1457 | .unlink = v9fs_vfs_unlink, |
1458 | .mkdir = v9fs_vfs_mkdir, | |
1459 | .rmdir = v9fs_vfs_rmdir, | |
1460 | .mknod = v9fs_vfs_mknod, | |
1461 | .rename = v9fs_vfs_rename, | |
1462 | .getattr = v9fs_vfs_getattr, | |
1463 | .setattr = v9fs_vfs_setattr, | |
1464 | }; | |
1465 | ||
754661f1 | 1466 | static const struct inode_operations v9fs_file_inode_operations = { |
2bad8471 EVH |
1467 | .getattr = v9fs_vfs_getattr, |
1468 | .setattr = v9fs_vfs_setattr, | |
1469 | }; | |
1470 | ||
754661f1 | 1471 | static const struct inode_operations v9fs_symlink_inode_operations = { |
6b255391 | 1472 | .get_link = v9fs_vfs_get_link, |
2bad8471 EVH |
1473 | .getattr = v9fs_vfs_getattr, |
1474 | .setattr = v9fs_vfs_setattr, | |
1475 | }; | |
9b6533c9 | 1476 |