Commit | Line | Data |
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1f327613 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
2bad8471 | 2 | /* |
73c592b9 | 3 | * This file contains vfs inode ops for the 9P2000 protocol. |
2bad8471 EVH |
4 | * |
5 | * Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com> | |
6 | * Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov> | |
2bad8471 EVH |
7 | */ |
8 | ||
5d385153 JP |
9 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
10 | ||
2bad8471 EVH |
11 | #include <linux/module.h> |
12 | #include <linux/errno.h> | |
13 | #include <linux/fs.h> | |
14 | #include <linux/file.h> | |
15 | #include <linux/pagemap.h> | |
16 | #include <linux/stat.h> | |
17 | #include <linux/string.h> | |
2bad8471 | 18 | #include <linux/namei.h> |
e8edc6e0 | 19 | #include <linux/sched.h> |
5a0e3ad6 | 20 | #include <linux/slab.h> |
ebf46264 | 21 | #include <linux/xattr.h> |
85ff872d | 22 | #include <linux/posix_acl.h> |
bd238fb4 LI |
23 | #include <net/9p/9p.h> |
24 | #include <net/9p/client.h> | |
2bad8471 | 25 | |
2bad8471 | 26 | #include "v9fs.h" |
2bad8471 | 27 | #include "v9fs_vfs.h" |
2bad8471 | 28 | #include "fid.h" |
60e78d2c | 29 | #include "cache.h" |
ebf46264 | 30 | #include "xattr.h" |
85ff872d | 31 | #include "acl.h" |
2bad8471 | 32 | |
754661f1 | 33 | static const struct inode_operations v9fs_dir_inode_operations; |
9b6533c9 | 34 | static const struct inode_operations v9fs_dir_inode_operations_dotu; |
754661f1 AV |
35 | static const struct inode_operations v9fs_file_inode_operations; |
36 | static const struct inode_operations v9fs_symlink_inode_operations; | |
f5fc6145 | 37 | |
2bad8471 EVH |
38 | /** |
39 | * unixmode2p9mode - convert unix mode bits to plan 9 | |
40 | * @v9ses: v9fs session information | |
41 | * @mode: mode to convert | |
42 | * | |
43 | */ | |
44 | ||
3eda0de6 | 45 | static u32 unixmode2p9mode(struct v9fs_session_info *v9ses, umode_t mode) |
2bad8471 EVH |
46 | { |
47 | int res; | |
6e195b0f | 48 | |
2bad8471 EVH |
49 | res = mode & 0777; |
50 | if (S_ISDIR(mode)) | |
bd238fb4 | 51 | res |= P9_DMDIR; |
dd6102fb | 52 | if (v9fs_proto_dotu(v9ses)) { |
2bad8471 EVH |
53 | if (v9ses->nodev == 0) { |
54 | if (S_ISSOCK(mode)) | |
bd238fb4 | 55 | res |= P9_DMSOCKET; |
2bad8471 | 56 | if (S_ISFIFO(mode)) |
bd238fb4 | 57 | res |= P9_DMNAMEDPIPE; |
2bad8471 | 58 | if (S_ISBLK(mode)) |
bd238fb4 | 59 | res |= P9_DMDEVICE; |
2bad8471 | 60 | if (S_ISCHR(mode)) |
bd238fb4 | 61 | res |= P9_DMDEVICE; |
2bad8471 EVH |
62 | } |
63 | ||
64 | if ((mode & S_ISUID) == S_ISUID) | |
bd238fb4 | 65 | res |= P9_DMSETUID; |
2bad8471 | 66 | if ((mode & S_ISGID) == S_ISGID) |
bd238fb4 | 67 | res |= P9_DMSETGID; |
d199d652 AL |
68 | if ((mode & S_ISVTX) == S_ISVTX) |
69 | res |= P9_DMSETVTX; | |
2bad8471 | 70 | } |
2bad8471 EVH |
71 | return res; |
72 | } | |
73 | ||
df345c67 AK |
74 | /** |
75 | * p9mode2perm- convert plan9 mode bits to unix permission bits | |
76 | * @v9ses: v9fs session information | |
77 | * @stat: p9_wstat from which mode need to be derived | |
78 | * | |
79 | */ | |
80 | static int p9mode2perm(struct v9fs_session_info *v9ses, | |
81 | struct p9_wstat *stat) | |
82 | { | |
83 | int res; | |
84 | int mode = stat->mode; | |
85 | ||
86 | res = mode & S_IALLUGO; | |
87 | if (v9fs_proto_dotu(v9ses)) { | |
88 | if ((mode & P9_DMSETUID) == P9_DMSETUID) | |
89 | res |= S_ISUID; | |
90 | ||
91 | if ((mode & P9_DMSETGID) == P9_DMSETGID) | |
92 | res |= S_ISGID; | |
93 | ||
94 | if ((mode & P9_DMSETVTX) == P9_DMSETVTX) | |
95 | res |= S_ISVTX; | |
96 | } | |
97 | return res; | |
98 | } | |
99 | ||
2bad8471 EVH |
100 | /** |
101 | * p9mode2unixmode- convert plan9 mode bits to unix mode bits | |
102 | * @v9ses: v9fs session information | |
45089142 AK |
103 | * @stat: p9_wstat from which mode need to be derived |
104 | * @rdev: major number, minor number in case of device files. | |
2bad8471 EVH |
105 | * |
106 | */ | |
3eda0de6 AV |
107 | static umode_t p9mode2unixmode(struct v9fs_session_info *v9ses, |
108 | struct p9_wstat *stat, dev_t *rdev) | |
2bad8471 | 109 | { |
05f975cd | 110 | int res, r; |
3eda0de6 | 111 | u32 mode = stat->mode; |
2bad8471 | 112 | |
45089142 | 113 | *rdev = 0; |
df345c67 | 114 | res = p9mode2perm(v9ses, stat); |
2bad8471 | 115 | |
bd238fb4 | 116 | if ((mode & P9_DMDIR) == P9_DMDIR) |
2bad8471 | 117 | res |= S_IFDIR; |
dd6102fb | 118 | else if ((mode & P9_DMSYMLINK) && (v9fs_proto_dotu(v9ses))) |
2bad8471 | 119 | res |= S_IFLNK; |
dd6102fb | 120 | else if ((mode & P9_DMSOCKET) && (v9fs_proto_dotu(v9ses)) |
2bad8471 EVH |
121 | && (v9ses->nodev == 0)) |
122 | res |= S_IFSOCK; | |
dd6102fb | 123 | else if ((mode & P9_DMNAMEDPIPE) && (v9fs_proto_dotu(v9ses)) |
2bad8471 EVH |
124 | && (v9ses->nodev == 0)) |
125 | res |= S_IFIFO; | |
dd6102fb | 126 | else if ((mode & P9_DMDEVICE) && (v9fs_proto_dotu(v9ses)) |
45089142 | 127 | && (v9ses->nodev == 0)) { |
05f975cd | 128 | char type = 0; |
45089142 AK |
129 | int major = -1, minor = -1; |
130 | ||
05f975cd DM |
131 | r = sscanf(stat->extension, "%c %i %i", &type, &major, &minor); |
132 | if (r != 3) { | |
133 | p9_debug(P9_DEBUG_ERROR, | |
134 | "invalid device string, umode will be bogus: %s\n", | |
135 | stat->extension); | |
136 | return res; | |
137 | } | |
45089142 AK |
138 | switch (type) { |
139 | case 'c': | |
140 | res |= S_IFCHR; | |
141 | break; | |
142 | case 'b': | |
143 | res |= S_IFBLK; | |
144 | break; | |
145 | default: | |
5d385153 JP |
146 | p9_debug(P9_DEBUG_ERROR, "Unknown special type %c %s\n", |
147 | type, stat->extension); | |
51958817 | 148 | } |
45089142 AK |
149 | *rdev = MKDEV(major, minor); |
150 | } else | |
2bad8471 EVH |
151 | res |= S_IFREG; |
152 | ||
2bad8471 EVH |
153 | return res; |
154 | } | |
155 | ||
ee443996 EVH |
156 | /** |
157 | * v9fs_uflags2omode- convert posix open flags to plan 9 mode bits | |
158 | * @uflags: flags to convert | |
2e4bef41 | 159 | * @extended: if .u extensions are active |
ee443996 EVH |
160 | */ |
161 | ||
2e4bef41 | 162 | int v9fs_uflags2omode(int uflags, int extended) |
6a3124a3 LI |
163 | { |
164 | int ret; | |
165 | ||
6a3124a3 LI |
166 | switch (uflags&3) { |
167 | default: | |
168 | case O_RDONLY: | |
bd238fb4 | 169 | ret = P9_OREAD; |
6a3124a3 LI |
170 | break; |
171 | ||
172 | case O_WRONLY: | |
bd238fb4 | 173 | ret = P9_OWRITE; |
6a3124a3 LI |
174 | break; |
175 | ||
176 | case O_RDWR: | |
bd238fb4 | 177 | ret = P9_ORDWR; |
6a3124a3 LI |
178 | break; |
179 | } | |
180 | ||
2e4bef41 EVH |
181 | if (extended) { |
182 | if (uflags & O_EXCL) | |
183 | ret |= P9_OEXCL; | |
184 | ||
185 | if (uflags & O_APPEND) | |
186 | ret |= P9_OAPPEND; | |
187 | } | |
6a3124a3 LI |
188 | |
189 | return ret; | |
190 | } | |
191 | ||
2bad8471 | 192 | /** |
531b1094 | 193 | * v9fs_blank_wstat - helper function to setup a 9P stat structure |
531b1094 | 194 | * @wstat: structure to initialize |
2bad8471 EVH |
195 | * |
196 | */ | |
197 | ||
7a4439c4 | 198 | void |
bd238fb4 | 199 | v9fs_blank_wstat(struct p9_wstat *wstat) |
2bad8471 | 200 | { |
531b1094 LI |
201 | wstat->type = ~0; |
202 | wstat->dev = ~0; | |
203 | wstat->qid.type = ~0; | |
204 | wstat->qid.version = ~0; | |
205 | *((long long *)&wstat->qid.path) = ~0; | |
206 | wstat->mode = ~0; | |
207 | wstat->atime = ~0; | |
208 | wstat->mtime = ~0; | |
209 | wstat->length = ~0; | |
210 | wstat->name = NULL; | |
211 | wstat->uid = NULL; | |
212 | wstat->gid = NULL; | |
213 | wstat->muid = NULL; | |
447c5094 EB |
214 | wstat->n_uid = INVALID_UID; |
215 | wstat->n_gid = INVALID_GID; | |
216 | wstat->n_muid = INVALID_UID; | |
531b1094 | 217 | wstat->extension = NULL; |
2bad8471 EVH |
218 | } |
219 | ||
60e78d2c AK |
220 | /** |
221 | * v9fs_alloc_inode - helper function to allocate an inode | |
bc868036 | 222 | * @sb: The superblock to allocate the inode from |
60e78d2c | 223 | */ |
60e78d2c AK |
224 | struct inode *v9fs_alloc_inode(struct super_block *sb) |
225 | { | |
a78ce05d | 226 | struct v9fs_inode *v9inode; |
6e195b0f | 227 | |
fd60b288 | 228 | v9inode = alloc_inode_sb(sb, v9fs_inode_cache, GFP_KERNEL); |
a78ce05d | 229 | if (!v9inode) |
60e78d2c | 230 | return NULL; |
b3cbea03 | 231 | v9inode->cache_validity = 0; |
5a7e0a8c | 232 | mutex_init(&v9inode->v_mutex); |
874c8ca1 | 233 | return &v9inode->netfs.inode; |
60e78d2c AK |
234 | } |
235 | ||
236 | /** | |
5e8a0770 | 237 | * v9fs_free_inode - destroy an inode |
bc868036 | 238 | * @inode: The inode to be freed |
60e78d2c AK |
239 | */ |
240 | ||
5e8a0770 | 241 | void v9fs_free_inode(struct inode *inode) |
60e78d2c | 242 | { |
a78ce05d | 243 | kmem_cache_free(v9fs_inode_cache, V9FS_I(inode)); |
60e78d2c | 244 | } |
fa0d7e3d | 245 | |
bc899ee1 DH |
246 | /* |
247 | * Set parameters for the netfs library | |
248 | */ | |
9546ac78 | 249 | void v9fs_set_netfs_context(struct inode *inode) |
bc899ee1 | 250 | { |
e81fb419 | 251 | struct v9fs_inode *v9inode = V9FS_I(inode); |
100ccd18 | 252 | netfs_inode_init(&v9inode->netfs, &v9fs_req_ops, true); |
bc899ee1 DH |
253 | } |
254 | ||
5ffc0cb3 | 255 | int v9fs_init_inode(struct v9fs_session_info *v9ses, |
3eda0de6 | 256 | struct inode *inode, umode_t mode, dev_t rdev) |
2bad8471 | 257 | { |
5ffc0cb3 | 258 | int err = 0; |
2bb54115 | 259 | |
f2d40141 | 260 | inode_init_owner(&nop_mnt_idmap, inode, NULL, mode); |
2bb54115 | 261 | inode->i_blocks = 0; |
45089142 | 262 | inode->i_rdev = rdev; |
d0242a3a | 263 | simple_inode_init_ts(inode); |
2bb54115 | 264 | inode->i_mapping->a_ops = &v9fs_addr_operations; |
987a6485 | 265 | inode->i_private = NULL; |
2bb54115 AK |
266 | |
267 | switch (mode & S_IFMT) { | |
268 | case S_IFIFO: | |
269 | case S_IFBLK: | |
270 | case S_IFCHR: | |
271 | case S_IFSOCK: | |
4b43516a MK |
272 | if (v9fs_proto_dotl(v9ses)) { |
273 | inode->i_op = &v9fs_file_inode_operations_dotl; | |
4b43516a MK |
274 | } else if (v9fs_proto_dotu(v9ses)) { |
275 | inode->i_op = &v9fs_file_inode_operations; | |
4b43516a | 276 | } else { |
5d385153 JP |
277 | p9_debug(P9_DEBUG_ERROR, |
278 | "special files without extended mode\n"); | |
2bb54115 AK |
279 | err = -EINVAL; |
280 | goto error; | |
2bad8471 | 281 | } |
2bb54115 AK |
282 | init_special_inode(inode, inode->i_mode, inode->i_rdev); |
283 | break; | |
284 | case S_IFREG: | |
9b6533c9 SK |
285 | if (v9fs_proto_dotl(v9ses)) { |
286 | inode->i_op = &v9fs_file_inode_operations_dotl; | |
d9bc0d11 | 287 | inode->i_fop = &v9fs_file_operations_dotl; |
9b6533c9 SK |
288 | } else { |
289 | inode->i_op = &v9fs_file_inode_operations; | |
d9bc0d11 | 290 | inode->i_fop = &v9fs_file_operations; |
9b6533c9 SK |
291 | } |
292 | ||
2bb54115 AK |
293 | break; |
294 | case S_IFLNK: | |
9b6533c9 | 295 | if (!v9fs_proto_dotu(v9ses) && !v9fs_proto_dotl(v9ses)) { |
5d385153 JP |
296 | p9_debug(P9_DEBUG_ERROR, |
297 | "extended modes used with legacy protocol\n"); | |
2bb54115 AK |
298 | err = -EINVAL; |
299 | goto error; | |
300 | } | |
9b6533c9 SK |
301 | |
302 | if (v9fs_proto_dotl(v9ses)) | |
303 | inode->i_op = &v9fs_symlink_inode_operations_dotl; | |
304 | else | |
305 | inode->i_op = &v9fs_symlink_inode_operations; | |
306 | ||
2bb54115 AK |
307 | break; |
308 | case S_IFDIR: | |
309 | inc_nlink(inode); | |
9b6533c9 SK |
310 | if (v9fs_proto_dotl(v9ses)) |
311 | inode->i_op = &v9fs_dir_inode_operations_dotl; | |
312 | else if (v9fs_proto_dotu(v9ses)) | |
313 | inode->i_op = &v9fs_dir_inode_operations_dotu; | |
2bb54115 AK |
314 | else |
315 | inode->i_op = &v9fs_dir_inode_operations; | |
9b6533c9 SK |
316 | |
317 | if (v9fs_proto_dotl(v9ses)) | |
318 | inode->i_fop = &v9fs_dir_operations_dotl; | |
319 | else | |
320 | inode->i_fop = &v9fs_dir_operations; | |
321 | ||
2bb54115 AK |
322 | break; |
323 | default: | |
609eac1c | 324 | p9_debug(P9_DEBUG_ERROR, "BAD mode 0x%hx S_IFMT 0x%x\n", |
5d385153 | 325 | mode, mode & S_IFMT); |
2bb54115 AK |
326 | err = -EINVAL; |
327 | goto error; | |
2bad8471 | 328 | } |
5ffc0cb3 AK |
329 | error: |
330 | return err; | |
2bb54115 | 331 | |
5ffc0cb3 | 332 | } |
2bb54115 | 333 | |
60e78d2c | 334 | /** |
bc868036 | 335 | * v9fs_evict_inode - Remove an inode from the inode cache |
60e78d2c AK |
336 | * @inode: inode to release |
337 | * | |
338 | */ | |
b57922d9 | 339 | void v9fs_evict_inode(struct inode *inode) |
60e78d2c | 340 | { |
4eb31178 EVH |
341 | struct v9fs_inode __maybe_unused *v9inode = V9FS_I(inode); |
342 | __le32 __maybe_unused version; | |
6b39f6d2 | 343 | |
4ad78628 | 344 | truncate_inode_pages_final(&inode->i_data); |
4eb31178 | 345 | |
93c84614 | 346 | version = cpu_to_le32(v9inode->qid.version); |
c9c4ff12 | 347 | netfs_clear_inode_writeback(inode, &version); |
4eb31178 | 348 | |
dbd5768f | 349 | clear_inode(inode); |
4ad78628 | 350 | filemap_fdatawrite(&inode->i_data); |
60e78d2c | 351 | |
4eb31178 | 352 | #ifdef CONFIG_9P_FSCACHE |
24e42e32 | 353 | fscache_relinquish_cookie(v9fs_inode_cookie(v9inode), false); |
4eb31178 | 354 | #endif |
60e78d2c AK |
355 | } |
356 | ||
fd2421f5 AK |
357 | static int v9fs_test_inode(struct inode *inode, void *data) |
358 | { | |
359 | int umode; | |
45089142 | 360 | dev_t rdev; |
fd2421f5 AK |
361 | struct v9fs_inode *v9inode = V9FS_I(inode); |
362 | struct p9_wstat *st = (struct p9_wstat *)data; | |
363 | struct v9fs_session_info *v9ses = v9fs_inode2v9ses(inode); | |
364 | ||
45089142 | 365 | umode = p9mode2unixmode(v9ses, st, &rdev); |
fd2421f5 | 366 | /* don't match inode of different type */ |
6e3e2c43 | 367 | if (inode_wrong_type(inode, umode)) |
fd2421f5 AK |
368 | return 0; |
369 | ||
370 | /* compare qid details */ | |
371 | if (memcmp(&v9inode->qid.version, | |
372 | &st->qid.version, sizeof(v9inode->qid.version))) | |
373 | return 0; | |
374 | ||
375 | if (v9inode->qid.type != st->qid.type) | |
376 | return 0; | |
8ee03163 TT |
377 | |
378 | if (v9inode->qid.path != st->qid.path) | |
379 | return 0; | |
fd2421f5 AK |
380 | return 1; |
381 | } | |
382 | ||
ed80fcfa AK |
383 | static int v9fs_test_new_inode(struct inode *inode, void *data) |
384 | { | |
385 | return 0; | |
386 | } | |
387 | ||
fd2421f5 AK |
388 | static int v9fs_set_inode(struct inode *inode, void *data) |
389 | { | |
390 | struct v9fs_inode *v9inode = V9FS_I(inode); | |
391 | struct p9_wstat *st = (struct p9_wstat *)data; | |
392 | ||
393 | memcpy(&v9inode->qid, &st->qid, sizeof(st->qid)); | |
394 | return 0; | |
395 | } | |
396 | ||
5ffc0cb3 AK |
397 | static struct inode *v9fs_qid_iget(struct super_block *sb, |
398 | struct p9_qid *qid, | |
ed80fcfa AK |
399 | struct p9_wstat *st, |
400 | int new) | |
6a3124a3 | 401 | { |
45089142 | 402 | dev_t rdev; |
3eda0de6 AV |
403 | int retval; |
404 | umode_t umode; | |
5ffc0cb3 AK |
405 | struct inode *inode; |
406 | struct v9fs_session_info *v9ses = sb->s_fs_info; | |
6e195b0f | 407 | int (*test)(struct inode *inode, void *data); |
ed80fcfa AK |
408 | |
409 | if (new) | |
410 | test = v9fs_test_new_inode; | |
411 | else | |
412 | test = v9fs_test_inode; | |
2bad8471 | 413 | |
b91a2669 | 414 | inode = iget5_locked(sb, QID2INO(qid), test, v9fs_set_inode, st); |
5ffc0cb3 AK |
415 | if (!inode) |
416 | return ERR_PTR(-ENOMEM); | |
417 | if (!(inode->i_state & I_NEW)) | |
418 | return inode; | |
419 | /* | |
420 | * initialize the inode with the stat info | |
421 | * FIXME!! we may need support for stale inodes | |
422 | * later. | |
423 | */ | |
b91a2669 | 424 | inode->i_ino = QID2INO(qid); |
45089142 AK |
425 | umode = p9mode2unixmode(v9ses, st, &rdev); |
426 | retval = v9fs_init_inode(v9ses, inode, umode, rdev); | |
5ffc0cb3 | 427 | if (retval) |
6a3124a3 | 428 | goto error; |
60e78d2c | 429 | |
5e3cc1ee | 430 | v9fs_stat2inode(st, inode, sb, 0); |
9546ac78 | 431 | v9fs_set_netfs_context(inode); |
5ffc0cb3 | 432 | v9fs_cache_inode_get_cookie(inode); |
5ffc0cb3 AK |
433 | unlock_new_inode(inode); |
434 | return inode; | |
6a3124a3 | 435 | error: |
0a73d0a2 | 436 | iget_failed(inode); |
5ffc0cb3 AK |
437 | return ERR_PTR(retval); |
438 | ||
439 | } | |
440 | ||
441 | struct inode * | |
a78ce05d | 442 | v9fs_inode_from_fid(struct v9fs_session_info *v9ses, struct p9_fid *fid, |
ed80fcfa | 443 | struct super_block *sb, int new) |
5ffc0cb3 AK |
444 | { |
445 | struct p9_wstat *st; | |
446 | struct inode *inode = NULL; | |
447 | ||
448 | st = p9_client_stat(fid); | |
449 | if (IS_ERR(st)) | |
450 | return ERR_CAST(st); | |
451 | ||
ed80fcfa | 452 | inode = v9fs_qid_iget(sb, &st->qid, st, new); |
02bc3567 | 453 | p9stat_free(st); |
bd238fb4 | 454 | kfree(st); |
5ffc0cb3 | 455 | return inode; |
2bad8471 EVH |
456 | } |
457 | ||
f88657ce AK |
458 | /** |
459 | * v9fs_at_to_dotl_flags- convert Linux specific AT flags to | |
460 | * plan 9 AT flag. | |
461 | * @flags: flags to convert | |
462 | */ | |
463 | static int v9fs_at_to_dotl_flags(int flags) | |
464 | { | |
465 | int rflags = 0; | |
6e195b0f | 466 | |
f88657ce AK |
467 | if (flags & AT_REMOVEDIR) |
468 | rflags |= P9_DOTL_AT_REMOVEDIR; | |
6e195b0f | 469 | |
f88657ce AK |
470 | return rflags; |
471 | } | |
472 | ||
ac89b2ef EG |
473 | /** |
474 | * v9fs_dec_count - helper functon to drop i_nlink. | |
475 | * | |
476 | * If a directory had nlink <= 2 (including . and ..), then we should not drop | |
477 | * the link count, which indicates the underlying exported fs doesn't maintain | |
478 | * nlink accurately. e.g. | |
479 | * - overlayfs sets nlink to 1 for merged dir | |
480 | * - ext4 (with dir_nlink feature enabled) sets nlink to 1 if a dir has more | |
481 | * than EXT4_LINK_MAX (65000) links. | |
482 | * | |
483 | * @inode: inode whose nlink is being dropped | |
484 | */ | |
485 | static void v9fs_dec_count(struct inode *inode) | |
486 | { | |
487 | if (!S_ISDIR(inode->i_mode) || inode->i_nlink > 2) | |
488 | drop_nlink(inode); | |
489 | } | |
490 | ||
2bad8471 EVH |
491 | /** |
492 | * v9fs_remove - helper function to remove files and directories | |
73c592b9 | 493 | * @dir: directory inode that is being deleted |
48e370ff | 494 | * @dentry: dentry that is being deleted |
fd2916bd | 495 | * @flags: removing a directory |
2bad8471 EVH |
496 | * |
497 | */ | |
498 | ||
48e370ff | 499 | static int v9fs_remove(struct inode *dir, struct dentry *dentry, int flags) |
2bad8471 | 500 | { |
48e370ff AK |
501 | struct inode *inode; |
502 | int retval = -EOPNOTSUPP; | |
503 | struct p9_fid *v9fid, *dfid; | |
504 | struct v9fs_session_info *v9ses; | |
2bad8471 | 505 | |
5d385153 JP |
506 | p9_debug(P9_DEBUG_VFS, "inode: %p dentry: %p rmdir: %x\n", |
507 | dir, dentry, flags); | |
2bad8471 | 508 | |
48e370ff | 509 | v9ses = v9fs_inode2v9ses(dir); |
2b0143b5 | 510 | inode = d_inode(dentry); |
77d5a6b7 | 511 | dfid = v9fs_parent_fid(dentry); |
48e370ff AK |
512 | if (IS_ERR(dfid)) { |
513 | retval = PTR_ERR(dfid); | |
5d385153 | 514 | p9_debug(P9_DEBUG_VFS, "fid lookup failed %d\n", retval); |
48e370ff AK |
515 | return retval; |
516 | } | |
517 | if (v9fs_proto_dotl(v9ses)) | |
f88657ce AK |
518 | retval = p9_client_unlinkat(dfid, dentry->d_name.name, |
519 | v9fs_at_to_dotl_flags(flags)); | |
b48dbb99 | 520 | p9_fid_put(dfid); |
48e370ff AK |
521 | if (retval == -EOPNOTSUPP) { |
522 | /* Try the one based on path */ | |
523 | v9fid = v9fs_fid_clone(dentry); | |
524 | if (IS_ERR(v9fid)) | |
525 | return PTR_ERR(v9fid); | |
526 | retval = p9_client_remove(v9fid); | |
527 | } | |
b271ec47 AK |
528 | if (!retval) { |
529 | /* | |
530 | * directories on unlink should have zero | |
531 | * link count | |
532 | */ | |
48e370ff AK |
533 | if (flags & AT_REMOVEDIR) { |
534 | clear_nlink(inode); | |
ac89b2ef | 535 | v9fs_dec_count(dir); |
b271ec47 | 536 | } else |
ac89b2ef | 537 | v9fs_dec_count(inode); |
d28c61f0 | 538 | |
48e370ff | 539 | v9fs_invalidate_inode_attr(inode); |
d28c61f0 | 540 | v9fs_invalidate_inode_attr(dir); |
154372e6 EVH |
541 | |
542 | /* invalidate all fids associated with dentry */ | |
543 | /* NOTE: This will not include open fids */ | |
544 | dentry->d_op->d_release(dentry); | |
b271ec47 | 545 | } |
d994f405 | 546 | return retval; |
2bad8471 EVH |
547 | } |
548 | ||
549 | /** | |
bd238fb4 | 550 | * v9fs_create - Create a file |
ee443996 EVH |
551 | * @v9ses: session information |
552 | * @dir: directory that dentry is being created in | |
bd238fb4 | 553 | * @dentry: dentry that is being created |
0e15597e | 554 | * @extension: 9p2000.u extension string to support devices, etc. |
bd238fb4 LI |
555 | * @perm: create permissions |
556 | * @mode: open mode | |
2bad8471 EVH |
557 | * |
558 | */ | |
bd238fb4 LI |
559 | static struct p9_fid * |
560 | v9fs_create(struct v9fs_session_info *v9ses, struct inode *dir, | |
561 | struct dentry *dentry, char *extension, u32 perm, u8 mode) | |
2bad8471 | 562 | { |
6a3124a3 | 563 | int err; |
7880b43b | 564 | const unsigned char *name; |
6636b6dc | 565 | struct p9_fid *dfid, *ofid = NULL, *fid = NULL; |
6a3124a3 | 566 | struct inode *inode; |
6a3124a3 | 567 | |
4b8e9923 | 568 | p9_debug(P9_DEBUG_VFS, "name %pd\n", dentry); |
51a87c55 | 569 | |
7880b43b | 570 | name = dentry->d_name.name; |
77d5a6b7 | 571 | dfid = v9fs_parent_fid(dentry); |
ba17674f | 572 | if (IS_ERR(dfid)) { |
da977b2c | 573 | err = PTR_ERR(dfid); |
5d385153 | 574 | p9_debug(P9_DEBUG_VFS, "fid lookup failed %d\n", err); |
6d27e64d | 575 | return ERR_PTR(err); |
da977b2c | 576 | } |
6a3124a3 | 577 | |
bd238fb4 | 578 | /* clone a fid to use for creation */ |
7d50a29f | 579 | ofid = clone_fid(dfid); |
bd238fb4 LI |
580 | if (IS_ERR(ofid)) { |
581 | err = PTR_ERR(ofid); | |
5d385153 | 582 | p9_debug(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err); |
dafbe689 | 583 | goto error; |
bd238fb4 | 584 | } |
6a3124a3 | 585 | |
bd238fb4 | 586 | err = p9_client_fcreate(ofid, name, perm, mode, extension); |
51a87c55 | 587 | if (err < 0) { |
5d385153 | 588 | p9_debug(P9_DEBUG_VFS, "p9_client_fcreate failed %d\n", err); |
6a3124a3 | 589 | goto error; |
6d27e64d | 590 | } |
6a3124a3 | 591 | |
b6054793 AK |
592 | if (!(perm & P9_DMLINK)) { |
593 | /* now walk from the parent so we can get unopened fid */ | |
594 | fid = p9_client_walk(dfid, 1, &name, 1); | |
595 | if (IS_ERR(fid)) { | |
596 | err = PTR_ERR(fid); | |
597 | p9_debug(P9_DEBUG_VFS, | |
598 | "p9_client_walk failed %d\n", err); | |
b6054793 AK |
599 | goto error; |
600 | } | |
601 | /* | |
602 | * instantiate inode and assign the unopened fid to the dentry | |
603 | */ | |
604 | inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb); | |
605 | if (IS_ERR(inode)) { | |
606 | err = PTR_ERR(inode); | |
607 | p9_debug(P9_DEBUG_VFS, | |
608 | "inode creation failed %d\n", err); | |
609 | goto error; | |
610 | } | |
dafbe689 | 611 | v9fs_fid_add(dentry, &fid); |
b6054793 | 612 | d_instantiate(dentry, inode); |
6a3124a3 | 613 | } |
b48dbb99 | 614 | p9_fid_put(dfid); |
bd238fb4 | 615 | return ofid; |
bd238fb4 | 616 | error: |
dafbe689 DM |
617 | p9_fid_put(dfid); |
618 | p9_fid_put(ofid); | |
619 | p9_fid_put(fid); | |
bd238fb4 LI |
620 | return ERR_PTR(err); |
621 | } | |
622 | ||
623 | /** | |
e43ae79c | 624 | * v9fs_vfs_create - VFS hook to create a regular file |
6c960e68 | 625 | * @idmap: idmap of the mount |
bc868036 DH |
626 | * @dir: The parent directory |
627 | * @dentry: The name of file to be created | |
628 | * @mode: The UNIX file mode to set | |
629 | * @excl: True if the file must not yet exist | |
e43ae79c MS |
630 | * |
631 | * open(.., O_CREAT) is handled in v9fs_vfs_atomic_open(). This is only called | |
632 | * for mknod(2). | |
633 | * | |
bd238fb4 | 634 | */ |
6a3124a3 | 635 | |
bd238fb4 | 636 | static int |
6c960e68 | 637 | v9fs_vfs_create(struct mnt_idmap *idmap, struct inode *dir, |
549c7297 | 638 | struct dentry *dentry, umode_t mode, bool excl) |
bd238fb4 | 639 | { |
e43ae79c MS |
640 | struct v9fs_session_info *v9ses = v9fs_inode2v9ses(dir); |
641 | u32 perm = unixmode2p9mode(v9ses, mode); | |
642 | struct p9_fid *fid; | |
bd238fb4 | 643 | |
e43ae79c MS |
644 | /* P9_OEXCL? */ |
645 | fid = v9fs_create(v9ses, dir, dentry, NULL, perm, P9_ORDWR); | |
646 | if (IS_ERR(fid)) | |
647 | return PTR_ERR(fid); | |
bd238fb4 | 648 | |
d28c61f0 | 649 | v9fs_invalidate_inode_attr(dir); |
b48dbb99 | 650 | p9_fid_put(fid); |
6a3124a3 LI |
651 | |
652 | return 0; | |
2bad8471 EVH |
653 | } |
654 | ||
655 | /** | |
656 | * v9fs_vfs_mkdir - VFS mkdir hook to create a directory | |
c54bd91e | 657 | * @idmap: idmap of the mount |
ee443996 | 658 | * @dir: inode that is being unlinked |
2bad8471 EVH |
659 | * @dentry: dentry that is being unlinked |
660 | * @mode: mode for new directory | |
661 | * | |
662 | */ | |
663 | ||
c54bd91e | 664 | static int v9fs_vfs_mkdir(struct mnt_idmap *idmap, struct inode *dir, |
549c7297 | 665 | struct dentry *dentry, umode_t mode) |
2bad8471 | 666 | { |
6a3124a3 | 667 | int err; |
bd238fb4 | 668 | u32 perm; |
bd238fb4 | 669 | struct p9_fid *fid; |
d28c61f0 | 670 | struct v9fs_session_info *v9ses; |
6a3124a3 | 671 | |
4b8e9923 | 672 | p9_debug(P9_DEBUG_VFS, "name %pd\n", dentry); |
bd238fb4 | 673 | err = 0; |
6a3124a3 | 674 | v9ses = v9fs_inode2v9ses(dir); |
6a3124a3 | 675 | perm = unixmode2p9mode(v9ses, mode | S_IFDIR); |
bd238fb4 LI |
676 | fid = v9fs_create(v9ses, dir, dentry, NULL, perm, P9_OREAD); |
677 | if (IS_ERR(fid)) { | |
678 | err = PTR_ERR(fid); | |
679 | fid = NULL; | |
d28c61f0 | 680 | } else { |
b271ec47 | 681 | inc_nlink(dir); |
d28c61f0 AK |
682 | v9fs_invalidate_inode_attr(dir); |
683 | } | |
6a3124a3 | 684 | |
bd238fb4 | 685 | if (fid) |
b48dbb99 | 686 | p9_fid_put(fid); |
6a3124a3 | 687 | |
6a3124a3 | 688 | return err; |
2bad8471 EVH |
689 | } |
690 | ||
691 | /** | |
692 | * v9fs_vfs_lookup - VFS lookup hook to "walk" to a new inode | |
693 | * @dir: inode that is being walked from | |
694 | * @dentry: dentry that is being walked to? | |
fd2916bd | 695 | * @flags: lookup flags (unused) |
2bad8471 EVH |
696 | * |
697 | */ | |
698 | ||
53c06f4e | 699 | struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry, |
00cd8dd3 | 700 | unsigned int flags) |
2bad8471 | 701 | { |
73f50717 | 702 | struct dentry *res; |
2bad8471 | 703 | struct v9fs_session_info *v9ses; |
bd238fb4 | 704 | struct p9_fid *dfid, *fid; |
2bad8471 | 705 | struct inode *inode; |
7880b43b | 706 | const unsigned char *name; |
2bad8471 | 707 | |
4b8e9923 AV |
708 | p9_debug(P9_DEBUG_VFS, "dir: %p dentry: (%pd) %p flags: %x\n", |
709 | dir, dentry, dentry, flags); | |
2bad8471 | 710 | |
11e9b49b SK |
711 | if (dentry->d_name.len > NAME_MAX) |
712 | return ERR_PTR(-ENAMETOOLONG); | |
713 | ||
2bad8471 | 714 | v9ses = v9fs_inode2v9ses(dir); |
a534c8d1 | 715 | /* We can walk d_parent because we hold the dir->i_mutex */ |
77d5a6b7 | 716 | dfid = v9fs_parent_fid(dentry); |
bd238fb4 | 717 | if (IS_ERR(dfid)) |
e231c2ee | 718 | return ERR_CAST(dfid); |
bd238fb4 | 719 | |
73f50717 AK |
720 | /* |
721 | * Make sure we don't use a wrong inode due to parallel | |
722 | * unlink. For cached mode create calls request for new | |
723 | * inode. But with cache disabled, lookup should do this. | |
724 | */ | |
500e2ab6 AV |
725 | name = dentry->d_name.name; |
726 | fid = p9_client_walk(dfid, 1, &name, 1); | |
b48dbb99 | 727 | p9_fid_put(dfid); |
500e2ab6 AV |
728 | if (fid == ERR_PTR(-ENOENT)) |
729 | inode = NULL; | |
730 | else if (IS_ERR(fid)) | |
731 | inode = ERR_CAST(fid); | |
4eb31178 | 732 | else if (v9ses->cache & (CACHE_META|CACHE_LOOSE)) |
73f50717 AK |
733 | inode = v9fs_get_inode_from_fid(v9ses, fid, dir->i_sb); |
734 | else | |
735 | inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb); | |
73f50717 AK |
736 | /* |
737 | * If we had a rename on the server and a parallel lookup | |
738 | * for the new name, then make sure we instantiate with | |
739 | * the new name. ie look up for a/b, while on server somebody | |
740 | * moved b under k and client parallely did a lookup for | |
741 | * k/b. | |
742 | */ | |
41d28bca | 743 | res = d_splice_alias(inode, dentry); |
500e2ab6 AV |
744 | if (!IS_ERR(fid)) { |
745 | if (!res) | |
dafbe689 | 746 | v9fs_fid_add(dentry, &fid); |
500e2ab6 | 747 | else if (!IS_ERR(res)) |
dafbe689 | 748 | v9fs_fid_add(res, &fid); |
500e2ab6 | 749 | else |
b48dbb99 | 750 | p9_fid_put(fid); |
500e2ab6 | 751 | } |
7b5be621 | 752 | return res; |
2bad8471 EVH |
753 | } |
754 | ||
d9585277 | 755 | static int |
e43ae79c | 756 | v9fs_vfs_atomic_open(struct inode *dir, struct dentry *dentry, |
6e195b0f | 757 | struct file *file, unsigned int flags, umode_t mode) |
e43ae79c MS |
758 | { |
759 | int err; | |
760 | u32 perm; | |
4eb31178 | 761 | struct v9fs_inode __maybe_unused *v9inode; |
e43ae79c | 762 | struct v9fs_session_info *v9ses; |
1543b4c5 | 763 | struct p9_fid *fid; |
e43ae79c | 764 | struct dentry *res = NULL; |
987a6485 | 765 | struct inode *inode; |
1543b4c5 | 766 | int p9_omode; |
e43ae79c | 767 | |
00699ad8 | 768 | if (d_in_lookup(dentry)) { |
00cd8dd3 | 769 | res = v9fs_vfs_lookup(dir, dentry, 0); |
e43ae79c | 770 | if (IS_ERR(res)) |
d9585277 | 771 | return PTR_ERR(res); |
e43ae79c MS |
772 | |
773 | if (res) | |
774 | dentry = res; | |
775 | } | |
776 | ||
777 | /* Only creates */ | |
2b0143b5 | 778 | if (!(flags & O_CREAT) || d_really_is_positive(dentry)) |
e45198a6 | 779 | return finish_no_open(file, res); |
e43ae79c | 780 | |
e43ae79c MS |
781 | v9ses = v9fs_inode2v9ses(dir); |
782 | perm = unixmode2p9mode(v9ses, mode); | |
1543b4c5 EVH |
783 | p9_omode = v9fs_uflags2omode(flags, v9fs_proto_dotu(v9ses)); |
784 | ||
4eb31178 | 785 | if ((v9ses->cache & CACHE_WRITEBACK) && (p9_omode & P9_OWRITE)) { |
21e26d5e | 786 | p9_omode = (p9_omode & ~P9_OWRITE) | P9_ORDWR; |
1543b4c5 EVH |
787 | p9_debug(P9_DEBUG_CACHE, |
788 | "write-only file with writeback enabled, creating w/ O_RDWR\n"); | |
789 | } | |
790 | fid = v9fs_create(v9ses, dir, dentry, NULL, perm, p9_omode); | |
e43ae79c MS |
791 | if (IS_ERR(fid)) { |
792 | err = PTR_ERR(fid); | |
e43ae79c MS |
793 | goto error; |
794 | } | |
795 | ||
796 | v9fs_invalidate_inode_attr(dir); | |
987a6485 GK |
797 | inode = d_inode(dentry); |
798 | v9inode = V9FS_I(inode); | |
be12af3e | 799 | err = finish_open(file, dentry, generic_file_open); |
30d90494 | 800 | if (err) |
e43ae79c | 801 | goto error; |
e43ae79c | 802 | |
30d90494 | 803 | file->private_data = fid; |
4eb31178 EVH |
804 | #ifdef CONFIG_9P_FSCACHE |
805 | if (v9ses->cache & CACHE_FSCACHE) | |
24e42e32 DH |
806 | fscache_use_cookie(v9fs_inode_cookie(v9inode), |
807 | file->f_mode & FMODE_WRITE); | |
4eb31178 | 808 | #endif |
1543b4c5 EVH |
809 | |
810 | v9fs_fid_add_modes(fid, v9ses->flags, v9ses->cache, file->f_flags); | |
dafbe689 | 811 | v9fs_open_fid_add(inode, &fid); |
e43ae79c | 812 | |
73a09dd9 | 813 | file->f_mode |= FMODE_CREATED; |
e43ae79c MS |
814 | out: |
815 | dput(res); | |
d9585277 | 816 | return err; |
e43ae79c MS |
817 | |
818 | error: | |
dafbe689 | 819 | p9_fid_put(fid); |
e43ae79c MS |
820 | goto out; |
821 | } | |
822 | ||
2bad8471 EVH |
823 | /** |
824 | * v9fs_vfs_unlink - VFS unlink hook to delete an inode | |
825 | * @i: inode that is being unlinked | |
73c592b9 | 826 | * @d: dentry that is being unlinked |
2bad8471 EVH |
827 | * |
828 | */ | |
829 | ||
53c06f4e | 830 | int v9fs_vfs_unlink(struct inode *i, struct dentry *d) |
2bad8471 EVH |
831 | { |
832 | return v9fs_remove(i, d, 0); | |
833 | } | |
834 | ||
835 | /** | |
836 | * v9fs_vfs_rmdir - VFS unlink hook to delete a directory | |
837 | * @i: inode that is being unlinked | |
73c592b9 | 838 | * @d: dentry that is being unlinked |
2bad8471 EVH |
839 | * |
840 | */ | |
841 | ||
53c06f4e | 842 | int v9fs_vfs_rmdir(struct inode *i, struct dentry *d) |
2bad8471 | 843 | { |
48e370ff | 844 | return v9fs_remove(i, d, AT_REMOVEDIR); |
2bad8471 EVH |
845 | } |
846 | ||
847 | /** | |
848 | * v9fs_vfs_rename - VFS hook to rename an inode | |
e18275ae | 849 | * @idmap: The idmap of the mount |
2bad8471 EVH |
850 | * @old_dir: old dir inode |
851 | * @old_dentry: old dentry | |
852 | * @new_dir: new dir inode | |
853 | * @new_dentry: new dentry | |
bc868036 | 854 | * @flags: RENAME_* flags |
2bad8471 EVH |
855 | * |
856 | */ | |
857 | ||
53c06f4e | 858 | int |
e18275ae | 859 | v9fs_vfs_rename(struct mnt_idmap *idmap, struct inode *old_dir, |
549c7297 CB |
860 | struct dentry *old_dentry, struct inode *new_dir, |
861 | struct dentry *new_dentry, unsigned int flags) | |
2bad8471 | 862 | { |
d28c61f0 | 863 | int retval; |
bd238fb4 | 864 | struct inode *old_inode; |
b271ec47 | 865 | struct inode *new_inode; |
bd238fb4 | 866 | struct v9fs_session_info *v9ses; |
dafbe689 DM |
867 | struct p9_fid *oldfid = NULL, *dfid = NULL; |
868 | struct p9_fid *olddirfid = NULL; | |
869 | struct p9_fid *newdirfid = NULL; | |
bd238fb4 | 870 | struct p9_wstat wstat; |
2bad8471 | 871 | |
1cd66c93 MS |
872 | if (flags) |
873 | return -EINVAL; | |
874 | ||
5d385153 | 875 | p9_debug(P9_DEBUG_VFS, "\n"); |
2b0143b5 DH |
876 | old_inode = d_inode(old_dentry); |
877 | new_inode = d_inode(new_dentry); | |
bd238fb4 LI |
878 | v9ses = v9fs_inode2v9ses(old_inode); |
879 | oldfid = v9fs_fid_lookup(old_dentry); | |
ba17674f | 880 | if (IS_ERR(oldfid)) |
da977b2c EVH |
881 | return PTR_ERR(oldfid); |
882 | ||
6636b6dc JW |
883 | dfid = v9fs_parent_fid(old_dentry); |
884 | olddirfid = clone_fid(dfid); | |
dafbe689 DM |
885 | p9_fid_put(dfid); |
886 | dfid = NULL; | |
6636b6dc | 887 | |
ba17674f | 888 | if (IS_ERR(olddirfid)) { |
da977b2c | 889 | retval = PTR_ERR(olddirfid); |
dafbe689 | 890 | goto error; |
da977b2c EVH |
891 | } |
892 | ||
6636b6dc JW |
893 | dfid = v9fs_parent_fid(new_dentry); |
894 | newdirfid = clone_fid(dfid); | |
b48dbb99 | 895 | p9_fid_put(dfid); |
dafbe689 | 896 | dfid = NULL; |
6636b6dc | 897 | |
ba17674f | 898 | if (IS_ERR(newdirfid)) { |
da977b2c | 899 | retval = PTR_ERR(newdirfid); |
dafbe689 | 900 | goto error; |
2bad8471 EVH |
901 | } |
902 | ||
a534c8d1 | 903 | down_write(&v9ses->rename_sem); |
4681dbda | 904 | if (v9fs_proto_dotl(v9ses)) { |
9e8fb38e AK |
905 | retval = p9_client_renameat(olddirfid, old_dentry->d_name.name, |
906 | newdirfid, new_dentry->d_name.name); | |
907 | if (retval == -EOPNOTSUPP) | |
908 | retval = p9_client_rename(oldfid, newdirfid, | |
909 | new_dentry->d_name.name); | |
910 | if (retval != -EOPNOTSUPP) | |
dafbe689 | 911 | goto error_locked; |
4681dbda | 912 | } |
a534c8d1 AK |
913 | if (old_dentry->d_parent != new_dentry->d_parent) { |
914 | /* | |
915 | * 9P .u can only handle file rename in the same directory | |
916 | */ | |
4681dbda | 917 | |
5d385153 | 918 | p9_debug(P9_DEBUG_ERROR, "old dir and new dir are different\n"); |
621997cd | 919 | retval = -EXDEV; |
dafbe689 | 920 | goto error_locked; |
2bad8471 | 921 | } |
531b1094 | 922 | v9fs_blank_wstat(&wstat); |
ba17674f | 923 | wstat.muid = v9ses->uname; |
7880b43b | 924 | wstat.name = new_dentry->d_name.name; |
bd238fb4 | 925 | retval = p9_client_wstat(oldfid, &wstat); |
2bad8471 | 926 | |
dafbe689 | 927 | error_locked: |
b271ec47 AK |
928 | if (!retval) { |
929 | if (new_inode) { | |
930 | if (S_ISDIR(new_inode->i_mode)) | |
931 | clear_nlink(new_inode); | |
932 | else | |
ac89b2ef | 933 | v9fs_dec_count(new_inode); |
b271ec47 AK |
934 | } |
935 | if (S_ISDIR(old_inode->i_mode)) { | |
936 | if (!new_inode) | |
937 | inc_nlink(new_dir); | |
ac89b2ef | 938 | v9fs_dec_count(old_dir); |
b271ec47 | 939 | } |
3bc86de3 | 940 | v9fs_invalidate_inode_attr(old_inode); |
d28c61f0 AK |
941 | v9fs_invalidate_inode_attr(old_dir); |
942 | v9fs_invalidate_inode_attr(new_dir); | |
3bc86de3 | 943 | |
a534c8d1 AK |
944 | /* successful rename */ |
945 | d_move(old_dentry, new_dentry); | |
b271ec47 | 946 | } |
a534c8d1 | 947 | up_write(&v9ses->rename_sem); |
2bad8471 | 948 | |
dafbe689 DM |
949 | error: |
950 | p9_fid_put(newdirfid); | |
b48dbb99 | 951 | p9_fid_put(olddirfid); |
b48dbb99 | 952 | p9_fid_put(oldfid); |
2bad8471 EVH |
953 | return retval; |
954 | } | |
955 | ||
956 | /** | |
943ffb58 | 957 | * v9fs_vfs_getattr - retrieve file metadata |
b74d24f7 | 958 | * @idmap: idmap of the mount |
a528d35e | 959 | * @path: Object to query |
ee443996 | 960 | * @stat: metadata structure to populate |
a528d35e DH |
961 | * @request_mask: Mask of STATX_xxx flags indicating the caller's interests |
962 | * @flags: AT_STATX_xxx setting | |
2bad8471 EVH |
963 | * |
964 | */ | |
965 | ||
966 | static int | |
b74d24f7 | 967 | v9fs_vfs_getattr(struct mnt_idmap *idmap, const struct path *path, |
549c7297 | 968 | struct kstat *stat, u32 request_mask, unsigned int flags) |
2bad8471 | 969 | { |
a528d35e | 970 | struct dentry *dentry = path->dentry; |
d9bc0d11 | 971 | struct inode *inode = d_inode(dentry); |
bd238fb4 LI |
972 | struct v9fs_session_info *v9ses; |
973 | struct p9_fid *fid; | |
51a87c55 | 974 | struct p9_wstat *st; |
bd238fb4 | 975 | |
5d385153 | 976 | p9_debug(P9_DEBUG_VFS, "dentry: %p\n", dentry); |
42869c8a | 977 | v9ses = v9fs_dentry2v9ses(dentry); |
4eb31178 | 978 | if (v9ses->cache & (CACHE_META|CACHE_LOOSE)) { |
0d72b928 | 979 | generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); |
a1211908 | 980 | return 0; |
4eb31178 | 981 | } else if (v9ses->cache & CACHE_WRITEBACK) { |
d9bc0d11 EVH |
982 | if (S_ISREG(inode->i_mode)) { |
983 | int retval = filemap_fdatawrite(inode->i_mapping); | |
984 | ||
985 | if (retval) | |
986 | p9_debug(P9_DEBUG_ERROR, | |
987 | "flushing writeback during getattr returned %d\n", retval); | |
988 | } | |
a1211908 | 989 | } |
bd238fb4 LI |
990 | fid = v9fs_fid_lookup(dentry); |
991 | if (IS_ERR(fid)) | |
da977b2c | 992 | return PTR_ERR(fid); |
2bad8471 | 993 | |
bd238fb4 | 994 | st = p9_client_stat(fid); |
b48dbb99 | 995 | p9_fid_put(fid); |
bd238fb4 LI |
996 | if (IS_ERR(st)) |
997 | return PTR_ERR(st); | |
2bad8471 | 998 | |
5e3cc1ee | 999 | v9fs_stat2inode(st, d_inode(dentry), dentry->d_sb, 0); |
0d72b928 | 1000 | generic_fillattr(&nop_mnt_idmap, request_mask, d_inode(dentry), stat); |
2bad8471 | 1001 | |
62b2be59 | 1002 | p9stat_free(st); |
bd238fb4 LI |
1003 | kfree(st); |
1004 | return 0; | |
2bad8471 EVH |
1005 | } |
1006 | ||
1007 | /** | |
1008 | * v9fs_vfs_setattr - set file metadata | |
c1632a0f | 1009 | * @idmap: idmap of the mount |
2bad8471 EVH |
1010 | * @dentry: file whose metadata to set |
1011 | * @iattr: metadata assignment structure | |
1012 | * | |
1013 | */ | |
1014 | ||
c1632a0f | 1015 | static int v9fs_vfs_setattr(struct mnt_idmap *idmap, |
549c7297 | 1016 | struct dentry *dentry, struct iattr *iattr) |
2bad8471 | 1017 | { |
6636b6dc | 1018 | int retval, use_dentry = 0; |
24e42e32 | 1019 | struct inode *inode = d_inode(dentry); |
bd238fb4 | 1020 | struct v9fs_session_info *v9ses; |
66246641 | 1021 | struct p9_fid *fid = NULL; |
bd238fb4 | 1022 | struct p9_wstat wstat; |
2bad8471 | 1023 | |
5d385153 | 1024 | p9_debug(P9_DEBUG_VFS, "\n"); |
c1632a0f | 1025 | retval = setattr_prepare(&nop_mnt_idmap, dentry, iattr); |
059c138b AK |
1026 | if (retval) |
1027 | return retval; | |
1028 | ||
42869c8a | 1029 | v9ses = v9fs_dentry2v9ses(dentry); |
66246641 JW |
1030 | if (iattr->ia_valid & ATTR_FILE) { |
1031 | fid = iattr->ia_file->private_data; | |
1032 | WARN_ON(!fid); | |
1033 | } | |
6636b6dc | 1034 | if (!fid) { |
66246641 | 1035 | fid = v9fs_fid_lookup(dentry); |
6636b6dc JW |
1036 | use_dentry = 1; |
1037 | } | |
6e195b0f | 1038 | if (IS_ERR(fid)) |
da977b2c | 1039 | return PTR_ERR(fid); |
2bad8471 | 1040 | |
531b1094 | 1041 | v9fs_blank_wstat(&wstat); |
2bad8471 | 1042 | if (iattr->ia_valid & ATTR_MODE) |
531b1094 | 1043 | wstat.mode = unixmode2p9mode(v9ses, iattr->ia_mode); |
2bad8471 EVH |
1044 | |
1045 | if (iattr->ia_valid & ATTR_MTIME) | |
531b1094 | 1046 | wstat.mtime = iattr->ia_mtime.tv_sec; |
2bad8471 EVH |
1047 | |
1048 | if (iattr->ia_valid & ATTR_ATIME) | |
531b1094 | 1049 | wstat.atime = iattr->ia_atime.tv_sec; |
2bad8471 EVH |
1050 | |
1051 | if (iattr->ia_valid & ATTR_SIZE) | |
531b1094 | 1052 | wstat.length = iattr->ia_size; |
2bad8471 | 1053 | |
dd6102fb | 1054 | if (v9fs_proto_dotu(v9ses)) { |
531b1094 LI |
1055 | if (iattr->ia_valid & ATTR_UID) |
1056 | wstat.n_uid = iattr->ia_uid; | |
2bad8471 | 1057 | |
531b1094 LI |
1058 | if (iattr->ia_valid & ATTR_GID) |
1059 | wstat.n_gid = iattr->ia_gid; | |
2bad8471 | 1060 | } |
059c138b | 1061 | |
3dc5436a | 1062 | /* Write all dirty data */ |
d9bc0d11 EVH |
1063 | if (d_is_reg(dentry)) { |
1064 | retval = filemap_fdatawrite(inode->i_mapping); | |
1065 | if (retval) | |
1066 | p9_debug(P9_DEBUG_ERROR, | |
1067 | "flushing writeback during setattr returned %d\n", retval); | |
1068 | } | |
3dc5436a | 1069 | |
f10fc50f | 1070 | retval = p9_client_wstat(fid, &wstat); |
6636b6dc JW |
1071 | |
1072 | if (use_dentry) | |
b48dbb99 | 1073 | p9_fid_put(fid); |
6636b6dc | 1074 | |
f10fc50f AK |
1075 | if (retval < 0) |
1076 | return retval; | |
059c138b AK |
1077 | |
1078 | if ((iattr->ia_valid & ATTR_SIZE) && | |
d9bc0d11 | 1079 | iattr->ia_size != i_size_read(inode)) { |
24e42e32 | 1080 | truncate_setsize(inode, iattr->ia_size); |
80105ed2 | 1081 | netfs_resize_file(netfs_inode(inode), iattr->ia_size, true); |
1543b4c5 | 1082 | |
4eb31178 EVH |
1083 | #ifdef CONFIG_9P_FSCACHE |
1084 | if (v9ses->cache & CACHE_FSCACHE) { | |
1085 | struct v9fs_inode *v9inode = V9FS_I(inode); | |
1086 | ||
d9bc0d11 | 1087 | fscache_resize_cookie(v9fs_inode_cookie(v9inode), iattr->ia_size); |
4eb31178 EVH |
1088 | } |
1089 | #endif | |
24e42e32 | 1090 | } |
059c138b | 1091 | |
24e42e32 | 1092 | v9fs_invalidate_inode_attr(inode); |
2bad8471 | 1093 | |
c1632a0f | 1094 | setattr_copy(&nop_mnt_idmap, inode, iattr); |
24e42e32 | 1095 | mark_inode_dirty(inode); |
1025774c | 1096 | return 0; |
2bad8471 EVH |
1097 | } |
1098 | ||
1099 | /** | |
531b1094 LI |
1100 | * v9fs_stat2inode - populate an inode structure with mistat info |
1101 | * @stat: Plan 9 metadata (mistat) structure | |
2bad8471 EVH |
1102 | * @inode: inode to populate |
1103 | * @sb: superblock of filesystem | |
5e3cc1ee | 1104 | * @flags: control flags (e.g. V9FS_STAT2INODE_KEEP_ISIZE) |
2bad8471 EVH |
1105 | * |
1106 | */ | |
1107 | ||
1108 | void | |
51a87c55 | 1109 | v9fs_stat2inode(struct p9_wstat *stat, struct inode *inode, |
5e3cc1ee | 1110 | struct super_block *sb, unsigned int flags) |
2bad8471 | 1111 | { |
3eda0de6 | 1112 | umode_t mode; |
2bad8471 | 1113 | struct v9fs_session_info *v9ses = sb->s_fs_info; |
b3cbea03 | 1114 | struct v9fs_inode *v9inode = V9FS_I(inode); |
2bad8471 | 1115 | |
bfe86848 | 1116 | set_nlink(inode, 1); |
2bad8471 | 1117 | |
d0242a3a JL |
1118 | inode_set_atime(inode, stat->atime, 0); |
1119 | inode_set_mtime(inode, stat->mtime, 0); | |
4f871800 | 1120 | inode_set_ctime(inode, stat->mtime, 0); |
2bad8471 | 1121 | |
bd32b82d LI |
1122 | inode->i_uid = v9ses->dfltuid; |
1123 | inode->i_gid = v9ses->dfltgid; | |
2bad8471 | 1124 | |
dd6102fb | 1125 | if (v9fs_proto_dotu(v9ses)) { |
531b1094 LI |
1126 | inode->i_uid = stat->n_uid; |
1127 | inode->i_gid = stat->n_gid; | |
2bad8471 | 1128 | } |
5717144a | 1129 | if ((S_ISREG(inode->i_mode)) || (S_ISDIR(inode->i_mode))) { |
9652c732 AV |
1130 | if (v9fs_proto_dotu(v9ses)) { |
1131 | unsigned int i_nlink; | |
5717144a | 1132 | /* |
9652c732 AV |
1133 | * Hadlink support got added later to the .u extension. |
1134 | * So there can be a server out there that doesn't | |
1135 | * support this even with .u extension. That would | |
1136 | * just leave us with stat->extension being an empty | |
1137 | * string, though. | |
5717144a | 1138 | */ |
5717144a | 1139 | /* HARDLINKCOUNT %u */ |
9652c732 AV |
1140 | if (sscanf(stat->extension, |
1141 | " HARDLINKCOUNT %u", &i_nlink) == 1) | |
bfe86848 | 1142 | set_nlink(inode, i_nlink); |
5717144a AK |
1143 | } |
1144 | } | |
df345c67 | 1145 | mode = p9mode2perm(v9ses, stat); |
45089142 AK |
1146 | mode |= inode->i_mode & ~S_IALLUGO; |
1147 | inode->i_mode = mode; | |
2bad8471 | 1148 | |
80105ed2 | 1149 | v9inode->netfs.remote_i_size = stat->length; |
5e3cc1ee HT |
1150 | if (!(flags & V9FS_STAT2INODE_KEEP_ISIZE)) |
1151 | v9fs_i_size_write(inode, stat->length); | |
bd238fb4 | 1152 | /* not real number of blocks, but 512 byte ones ... */ |
5e3cc1ee | 1153 | inode->i_blocks = (stat->length + 512 - 1) >> 9; |
b3cbea03 | 1154 | v9inode->cache_validity &= ~V9FS_INO_INVALID_ATTR; |
2bad8471 EVH |
1155 | } |
1156 | ||
2bad8471 | 1157 | /** |
6b255391 | 1158 | * v9fs_vfs_get_link - follow a symlink path |
2bad8471 | 1159 | * @dentry: dentry for symlink |
6b255391 | 1160 | * @inode: inode for symlink |
fceef393 | 1161 | * @done: delayed call for when we are done with the return value |
2bad8471 EVH |
1162 | */ |
1163 | ||
6b255391 | 1164 | static const char *v9fs_vfs_get_link(struct dentry *dentry, |
fceef393 AV |
1165 | struct inode *inode, |
1166 | struct delayed_call *done) | |
2bad8471 | 1167 | { |
6b255391 AV |
1168 | struct v9fs_session_info *v9ses; |
1169 | struct p9_fid *fid; | |
51a87c55 | 1170 | struct p9_wstat *st; |
680baacb | 1171 | char *res; |
2bad8471 | 1172 | |
6b255391 AV |
1173 | if (!dentry) |
1174 | return ERR_PTR(-ECHILD); | |
1175 | ||
1176 | v9ses = v9fs_dentry2v9ses(dentry); | |
e5690f26 DM |
1177 | if (!v9fs_proto_dotu(v9ses)) |
1178 | return ERR_PTR(-EBADF); | |
1179 | ||
90e4fc88 | 1180 | p9_debug(P9_DEBUG_VFS, "%pd\n", dentry); |
e5690f26 | 1181 | fid = v9fs_fid_lookup(dentry); |
90e4fc88 | 1182 | |
ba17674f | 1183 | if (IS_ERR(fid)) |
90e4fc88 | 1184 | return ERR_CAST(fid); |
2bad8471 | 1185 | |
bd238fb4 | 1186 | st = p9_client_stat(fid); |
b48dbb99 | 1187 | p9_fid_put(fid); |
bd238fb4 | 1188 | if (IS_ERR(st)) |
90e4fc88 | 1189 | return ERR_CAST(st); |
2bad8471 | 1190 | |
bd238fb4 | 1191 | if (!(st->mode & P9_DMSYMLINK)) { |
90e4fc88 AV |
1192 | p9stat_free(st); |
1193 | kfree(st); | |
1194 | return ERR_PTR(-EINVAL); | |
2bad8471 | 1195 | } |
680baacb | 1196 | res = st->extension; |
90e4fc88 | 1197 | st->extension = NULL; |
680baacb AV |
1198 | if (strlen(res) >= PATH_MAX) |
1199 | res[PATH_MAX - 1] = '\0'; | |
1200 | ||
62b2be59 | 1201 | p9stat_free(st); |
bd238fb4 | 1202 | kfree(st); |
fceef393 AV |
1203 | set_delayed_call(done, kfree_link, res); |
1204 | return res; | |
2bad8471 EVH |
1205 | } |
1206 | ||
ee443996 EVH |
1207 | /** |
1208 | * v9fs_vfs_mkspecial - create a special file | |
1209 | * @dir: inode to create special file in | |
1210 | * @dentry: dentry to create | |
fd2916bd | 1211 | * @perm: mode to create special file |
ee443996 EVH |
1212 | * @extension: 9p2000.u format extension string representing special file |
1213 | * | |
1214 | */ | |
1215 | ||
531b1094 | 1216 | static int v9fs_vfs_mkspecial(struct inode *dir, struct dentry *dentry, |
c2837de7 | 1217 | u32 perm, const char *extension) |
2bad8471 | 1218 | { |
bd238fb4 | 1219 | struct p9_fid *fid; |
d28c61f0 | 1220 | struct v9fs_session_info *v9ses; |
2bad8471 | 1221 | |
6a3124a3 | 1222 | v9ses = v9fs_inode2v9ses(dir); |
dd6102fb | 1223 | if (!v9fs_proto_dotu(v9ses)) { |
5d385153 | 1224 | p9_debug(P9_DEBUG_ERROR, "not extended\n"); |
6a3124a3 | 1225 | return -EPERM; |
2bad8471 EVH |
1226 | } |
1227 | ||
bd238fb4 LI |
1228 | fid = v9fs_create(v9ses, dir, dentry, (char *) extension, perm, |
1229 | P9_OREAD); | |
1230 | if (IS_ERR(fid)) | |
1231 | return PTR_ERR(fid); | |
da977b2c | 1232 | |
d28c61f0 | 1233 | v9fs_invalidate_inode_attr(dir); |
b48dbb99 | 1234 | p9_fid_put(fid); |
6a3124a3 | 1235 | return 0; |
531b1094 LI |
1236 | } |
1237 | ||
1238 | /** | |
1239 | * v9fs_vfs_symlink - helper function to create symlinks | |
7a77db95 | 1240 | * @idmap: idmap of the mount |
531b1094 LI |
1241 | * @dir: directory inode containing symlink |
1242 | * @dentry: dentry for symlink | |
1243 | * @symname: symlink data | |
1244 | * | |
ee443996 | 1245 | * See Also: 9P2000.u RFC for more information |
531b1094 LI |
1246 | * |
1247 | */ | |
1248 | ||
1249 | static int | |
7a77db95 | 1250 | v9fs_vfs_symlink(struct mnt_idmap *idmap, struct inode *dir, |
549c7297 | 1251 | struct dentry *dentry, const char *symname) |
531b1094 | 1252 | { |
4b8e9923 AV |
1253 | p9_debug(P9_DEBUG_VFS, " %lu,%pd,%s\n", |
1254 | dir->i_ino, dentry, symname); | |
531b1094 | 1255 | |
c2837de7 | 1256 | return v9fs_vfs_mkspecial(dir, dentry, P9_DMSYMLINK, symname); |
531b1094 LI |
1257 | } |
1258 | ||
b46c267e AV |
1259 | #define U32_MAX_DIGITS 10 |
1260 | ||
531b1094 LI |
1261 | /** |
1262 | * v9fs_vfs_link - create a hardlink | |
1263 | * @old_dentry: dentry for file to link to | |
1264 | * @dir: inode destination for new link | |
1265 | * @dentry: dentry for link | |
1266 | * | |
1267 | */ | |
1268 | ||
531b1094 LI |
1269 | static int |
1270 | v9fs_vfs_link(struct dentry *old_dentry, struct inode *dir, | |
1271 | struct dentry *dentry) | |
1272 | { | |
1273 | int retval; | |
b46c267e | 1274 | char name[1 + U32_MAX_DIGITS + 2]; /* sign + number + \n + \0 */ |
d28c61f0 | 1275 | struct p9_fid *oldfid; |
531b1094 | 1276 | |
4b8e9923 AV |
1277 | p9_debug(P9_DEBUG_VFS, " %lu,%pd,%pd\n", |
1278 | dir->i_ino, dentry, old_dentry); | |
531b1094 | 1279 | |
da977b2c | 1280 | oldfid = v9fs_fid_clone(old_dentry); |
ba17674f | 1281 | if (IS_ERR(oldfid)) |
da977b2c | 1282 | return PTR_ERR(oldfid); |
531b1094 | 1283 | |
16cce6d2 | 1284 | sprintf(name, "%d\n", oldfid->fid); |
bd238fb4 | 1285 | retval = v9fs_vfs_mkspecial(dir, dentry, P9_DMLINK, name); |
c06c066a | 1286 | if (!retval) { |
2b0143b5 | 1287 | v9fs_refresh_inode(oldfid, d_inode(old_dentry)); |
d28c61f0 | 1288 | v9fs_invalidate_inode_attr(dir); |
c06c066a | 1289 | } |
b48dbb99 | 1290 | p9_fid_put(oldfid); |
2bad8471 EVH |
1291 | return retval; |
1292 | } | |
1293 | ||
1294 | /** | |
1295 | * v9fs_vfs_mknod - create a special file | |
5ebb29be | 1296 | * @idmap: idmap of the mount |
2bad8471 EVH |
1297 | * @dir: inode destination for new link |
1298 | * @dentry: dentry for file | |
1299 | * @mode: mode for creation | |
ee443996 | 1300 | * @rdev: device associated with special file |
2bad8471 EVH |
1301 | * |
1302 | */ | |
1303 | ||
1304 | static int | |
5ebb29be | 1305 | v9fs_vfs_mknod(struct mnt_idmap *idmap, struct inode *dir, |
549c7297 | 1306 | struct dentry *dentry, umode_t mode, dev_t rdev) |
2bad8471 | 1307 | { |
c2837de7 | 1308 | struct v9fs_session_info *v9ses = v9fs_inode2v9ses(dir); |
531b1094 | 1309 | int retval; |
b46c267e | 1310 | char name[2 + U32_MAX_DIGITS + 1 + U32_MAX_DIGITS + 1]; |
c2837de7 | 1311 | u32 perm; |
2bad8471 | 1312 | |
6e195b0f | 1313 | p9_debug(P9_DEBUG_VFS, " %lu,%pd mode: %x MAJOR: %u MINOR: %u\n", |
4b8e9923 | 1314 | dir->i_ino, dentry, mode, |
5d385153 | 1315 | MAJOR(rdev), MINOR(rdev)); |
2bad8471 | 1316 | |
2bad8471 EVH |
1317 | /* build extension */ |
1318 | if (S_ISBLK(mode)) | |
531b1094 | 1319 | sprintf(name, "b %u %u", MAJOR(rdev), MINOR(rdev)); |
2bad8471 | 1320 | else if (S_ISCHR(mode)) |
531b1094 | 1321 | sprintf(name, "c %u %u", MAJOR(rdev), MINOR(rdev)); |
b46c267e | 1322 | else |
75cc5c9b | 1323 | *name = 0; |
2bad8471 | 1324 | |
c2837de7 AV |
1325 | perm = unixmode2p9mode(v9ses, mode); |
1326 | retval = v9fs_vfs_mkspecial(dir, dentry, perm, name); | |
2bad8471 EVH |
1327 | |
1328 | return retval; | |
1329 | } | |
1330 | ||
b3cbea03 AK |
1331 | int v9fs_refresh_inode(struct p9_fid *fid, struct inode *inode) |
1332 | { | |
45089142 AK |
1333 | int umode; |
1334 | dev_t rdev; | |
b3cbea03 AK |
1335 | struct p9_wstat *st; |
1336 | struct v9fs_session_info *v9ses; | |
5e3cc1ee | 1337 | unsigned int flags; |
b3cbea03 AK |
1338 | |
1339 | v9ses = v9fs_inode2v9ses(inode); | |
1340 | st = p9_client_stat(fid); | |
1341 | if (IS_ERR(st)) | |
1342 | return PTR_ERR(st); | |
45089142 AK |
1343 | /* |
1344 | * Don't update inode if the file type is different | |
1345 | */ | |
1346 | umode = p9mode2unixmode(v9ses, st, &rdev); | |
6e3e2c43 | 1347 | if (inode_wrong_type(inode, umode)) |
45089142 | 1348 | goto out; |
b3cbea03 | 1349 | |
b3cbea03 AK |
1350 | /* |
1351 | * We don't want to refresh inode->i_size, | |
1352 | * because we may have cached data | |
1353 | */ | |
4eb31178 | 1354 | flags = (v9ses->cache & CACHE_LOOSE) ? |
5e3cc1ee HT |
1355 | V9FS_STAT2INODE_KEEP_ISIZE : 0; |
1356 | v9fs_stat2inode(st, inode, inode->i_sb, flags); | |
45089142 | 1357 | out: |
b3cbea03 AK |
1358 | p9stat_free(st); |
1359 | kfree(st); | |
1360 | return 0; | |
1361 | } | |
1362 | ||
9b6533c9 SK |
1363 | static const struct inode_operations v9fs_dir_inode_operations_dotu = { |
1364 | .create = v9fs_vfs_create, | |
1365 | .lookup = v9fs_vfs_lookup, | |
e43ae79c | 1366 | .atomic_open = v9fs_vfs_atomic_open, |
9b6533c9 | 1367 | .symlink = v9fs_vfs_symlink, |
50cc42ff | 1368 | .link = v9fs_vfs_link, |
9b6533c9 SK |
1369 | .unlink = v9fs_vfs_unlink, |
1370 | .mkdir = v9fs_vfs_mkdir, | |
1371 | .rmdir = v9fs_vfs_rmdir, | |
1d76e313 | 1372 | .mknod = v9fs_vfs_mknod, |
9b6533c9 SK |
1373 | .rename = v9fs_vfs_rename, |
1374 | .getattr = v9fs_vfs_getattr, | |
1375 | .setattr = v9fs_vfs_setattr, | |
1376 | }; | |
1377 | ||
754661f1 | 1378 | static const struct inode_operations v9fs_dir_inode_operations = { |
b501611a EVH |
1379 | .create = v9fs_vfs_create, |
1380 | .lookup = v9fs_vfs_lookup, | |
e43ae79c | 1381 | .atomic_open = v9fs_vfs_atomic_open, |
b501611a EVH |
1382 | .unlink = v9fs_vfs_unlink, |
1383 | .mkdir = v9fs_vfs_mkdir, | |
1384 | .rmdir = v9fs_vfs_rmdir, | |
1385 | .mknod = v9fs_vfs_mknod, | |
1386 | .rename = v9fs_vfs_rename, | |
1387 | .getattr = v9fs_vfs_getattr, | |
1388 | .setattr = v9fs_vfs_setattr, | |
1389 | }; | |
1390 | ||
754661f1 | 1391 | static const struct inode_operations v9fs_file_inode_operations = { |
2bad8471 EVH |
1392 | .getattr = v9fs_vfs_getattr, |
1393 | .setattr = v9fs_vfs_setattr, | |
1394 | }; | |
1395 | ||
754661f1 | 1396 | static const struct inode_operations v9fs_symlink_inode_operations = { |
6b255391 | 1397 | .get_link = v9fs_vfs_get_link, |
2bad8471 EVH |
1398 | .getattr = v9fs_vfs_getattr, |
1399 | .setattr = v9fs_vfs_setattr, | |
1400 | }; | |
9b6533c9 | 1401 |