Commit | Line | Data |
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1f327613 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
53c06f4e AK |
2 | /* |
3 | * linux/fs/9p/vfs_inode_dotl.c | |
4 | * | |
5 | * This file contains vfs inode ops for the 9P2000.L protocol. | |
6 | * | |
7 | * Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com> | |
8 | * Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov> | |
53c06f4e AK |
9 | */ |
10 | ||
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> | |
18 | #include <linux/inet.h> | |
19 | #include <linux/namei.h> | |
20 | #include <linux/idr.h> | |
21 | #include <linux/sched.h> | |
22 | #include <linux/slab.h> | |
23 | #include <linux/xattr.h> | |
24 | #include <linux/posix_acl.h> | |
25 | #include <net/9p/9p.h> | |
26 | #include <net/9p/client.h> | |
27 | ||
28 | #include "v9fs.h" | |
29 | #include "v9fs_vfs.h" | |
30 | #include "fid.h" | |
31 | #include "cache.h" | |
32 | #include "xattr.h" | |
33 | #include "acl.h" | |
34 | ||
35 | static int | |
1a67aafb | 36 | v9fs_vfs_mknod_dotl(struct inode *dir, struct dentry *dentry, umode_t omode, |
53c06f4e AK |
37 | dev_t rdev); |
38 | ||
39 | /** | |
40 | * v9fs_get_fsgid_for_create - Helper function to get the gid for creating a | |
41 | * new file system object. This checks the S_ISGID to determine the owning | |
42 | * group of the new file system object. | |
43 | */ | |
44 | ||
d4ef4e35 | 45 | static kgid_t v9fs_get_fsgid_for_create(struct inode *dir_inode) |
53c06f4e AK |
46 | { |
47 | BUG_ON(dir_inode == NULL); | |
48 | ||
49 | if (dir_inode->i_mode & S_ISGID) { | |
50 | /* set_gid bit is set.*/ | |
51 | return dir_inode->i_gid; | |
52 | } | |
53 | return current_fsgid(); | |
54 | } | |
55 | ||
fd2421f5 AK |
56 | static int v9fs_test_inode_dotl(struct inode *inode, void *data) |
57 | { | |
58 | struct v9fs_inode *v9inode = V9FS_I(inode); | |
59 | struct p9_stat_dotl *st = (struct p9_stat_dotl *)data; | |
60 | ||
61 | /* don't match inode of different type */ | |
62 | if ((inode->i_mode & S_IFMT) != (st->st_mode & S_IFMT)) | |
63 | return 0; | |
64 | ||
65 | if (inode->i_generation != st->st_gen) | |
66 | return 0; | |
67 | ||
68 | /* compare qid details */ | |
69 | if (memcmp(&v9inode->qid.version, | |
70 | &st->qid.version, sizeof(v9inode->qid.version))) | |
71 | return 0; | |
72 | ||
73 | if (v9inode->qid.type != st->qid.type) | |
74 | return 0; | |
8ee03163 TT |
75 | |
76 | if (v9inode->qid.path != st->qid.path) | |
77 | return 0; | |
fd2421f5 AK |
78 | return 1; |
79 | } | |
80 | ||
ed80fcfa AK |
81 | /* Always get a new inode */ |
82 | static int v9fs_test_new_inode_dotl(struct inode *inode, void *data) | |
83 | { | |
84 | return 0; | |
85 | } | |
86 | ||
fd2421f5 AK |
87 | static int v9fs_set_inode_dotl(struct inode *inode, void *data) |
88 | { | |
89 | struct v9fs_inode *v9inode = V9FS_I(inode); | |
90 | struct p9_stat_dotl *st = (struct p9_stat_dotl *)data; | |
91 | ||
92 | memcpy(&v9inode->qid, &st->qid, sizeof(st->qid)); | |
93 | inode->i_generation = st->st_gen; | |
94 | return 0; | |
95 | } | |
96 | ||
5ffc0cb3 AK |
97 | static struct inode *v9fs_qid_iget_dotl(struct super_block *sb, |
98 | struct p9_qid *qid, | |
99 | struct p9_fid *fid, | |
ed80fcfa AK |
100 | struct p9_stat_dotl *st, |
101 | int new) | |
5ffc0cb3 AK |
102 | { |
103 | int retval; | |
104 | unsigned long i_ino; | |
105 | struct inode *inode; | |
106 | struct v9fs_session_info *v9ses = sb->s_fs_info; | |
ed80fcfa AK |
107 | int (*test)(struct inode *, void *); |
108 | ||
109 | if (new) | |
110 | test = v9fs_test_new_inode_dotl; | |
111 | else | |
112 | test = v9fs_test_inode_dotl; | |
5ffc0cb3 AK |
113 | |
114 | i_ino = v9fs_qid2ino(qid); | |
ed80fcfa | 115 | inode = iget5_locked(sb, i_ino, test, v9fs_set_inode_dotl, st); |
5ffc0cb3 AK |
116 | if (!inode) |
117 | return ERR_PTR(-ENOMEM); | |
118 | if (!(inode->i_state & I_NEW)) | |
119 | return inode; | |
120 | /* | |
121 | * initialize the inode with the stat info | |
122 | * FIXME!! we may need support for stale inodes | |
123 | * later. | |
124 | */ | |
fd2421f5 | 125 | inode->i_ino = i_ino; |
45089142 AK |
126 | retval = v9fs_init_inode(v9ses, inode, |
127 | st->st_mode, new_decode_dev(st->st_rdev)); | |
5ffc0cb3 AK |
128 | if (retval) |
129 | goto error; | |
130 | ||
5e3cc1ee | 131 | v9fs_stat2inode_dotl(st, inode, 0); |
5ffc0cb3 | 132 | v9fs_cache_inode_get_cookie(inode); |
5ffc0cb3 AK |
133 | retval = v9fs_get_acl(inode, fid); |
134 | if (retval) | |
135 | goto error; | |
136 | ||
137 | unlock_new_inode(inode); | |
138 | return inode; | |
139 | error: | |
0a73d0a2 | 140 | iget_failed(inode); |
5ffc0cb3 AK |
141 | return ERR_PTR(retval); |
142 | ||
143 | } | |
144 | ||
53c06f4e | 145 | struct inode * |
a78ce05d | 146 | v9fs_inode_from_fid_dotl(struct v9fs_session_info *v9ses, struct p9_fid *fid, |
ed80fcfa | 147 | struct super_block *sb, int new) |
53c06f4e | 148 | { |
53c06f4e | 149 | struct p9_stat_dotl *st; |
5ffc0cb3 | 150 | struct inode *inode = NULL; |
53c06f4e | 151 | |
fd2421f5 | 152 | st = p9_client_getattr_dotl(fid, P9_STATS_BASIC | P9_STATS_GEN); |
53c06f4e AK |
153 | if (IS_ERR(st)) |
154 | return ERR_CAST(st); | |
155 | ||
ed80fcfa | 156 | inode = v9fs_qid_iget_dotl(sb, &st->qid, fid, st, new); |
53c06f4e | 157 | kfree(st); |
5ffc0cb3 | 158 | return inode; |
53c06f4e AK |
159 | } |
160 | ||
f88657ce AK |
161 | struct dotl_openflag_map { |
162 | int open_flag; | |
163 | int dotl_flag; | |
164 | }; | |
165 | ||
166 | static int v9fs_mapped_dotl_flags(int flags) | |
167 | { | |
168 | int i; | |
169 | int rflags = 0; | |
170 | struct dotl_openflag_map dotl_oflag_map[] = { | |
171 | { O_CREAT, P9_DOTL_CREATE }, | |
172 | { O_EXCL, P9_DOTL_EXCL }, | |
173 | { O_NOCTTY, P9_DOTL_NOCTTY }, | |
f88657ce AK |
174 | { O_APPEND, P9_DOTL_APPEND }, |
175 | { O_NONBLOCK, P9_DOTL_NONBLOCK }, | |
176 | { O_DSYNC, P9_DOTL_DSYNC }, | |
177 | { FASYNC, P9_DOTL_FASYNC }, | |
178 | { O_DIRECT, P9_DOTL_DIRECT }, | |
179 | { O_LARGEFILE, P9_DOTL_LARGEFILE }, | |
180 | { O_DIRECTORY, P9_DOTL_DIRECTORY }, | |
181 | { O_NOFOLLOW, P9_DOTL_NOFOLLOW }, | |
182 | { O_NOATIME, P9_DOTL_NOATIME }, | |
183 | { O_CLOEXEC, P9_DOTL_CLOEXEC }, | |
184 | { O_SYNC, P9_DOTL_SYNC}, | |
185 | }; | |
186 | for (i = 0; i < ARRAY_SIZE(dotl_oflag_map); i++) { | |
187 | if (flags & dotl_oflag_map[i].open_flag) | |
188 | rflags |= dotl_oflag_map[i].dotl_flag; | |
189 | } | |
190 | return rflags; | |
191 | } | |
192 | ||
193 | /** | |
194 | * v9fs_open_to_dotl_flags- convert Linux specific open flags to | |
195 | * plan 9 open flag. | |
196 | * @flags: flags to convert | |
197 | */ | |
198 | int v9fs_open_to_dotl_flags(int flags) | |
199 | { | |
200 | int rflags = 0; | |
201 | ||
202 | /* | |
203 | * We have same bits for P9_DOTL_READONLY, P9_DOTL_WRONLY | |
204 | * and P9_DOTL_NOACCESS | |
205 | */ | |
206 | rflags |= flags & O_ACCMODE; | |
207 | rflags |= v9fs_mapped_dotl_flags(flags); | |
208 | ||
209 | return rflags; | |
210 | } | |
211 | ||
53c06f4e AK |
212 | /** |
213 | * v9fs_vfs_create_dotl - VFS hook to create files for 9P2000.L protocol. | |
214 | * @dir: directory inode that is being created | |
215 | * @dentry: dentry that is being deleted | |
fd2916bd | 216 | * @omode: create permissions |
53c06f4e AK |
217 | * |
218 | */ | |
219 | ||
220 | static int | |
4acdaf27 | 221 | v9fs_vfs_create_dotl(struct inode *dir, struct dentry *dentry, umode_t omode, |
ebfc3b49 | 222 | bool excl) |
e43ae79c MS |
223 | { |
224 | return v9fs_vfs_mknod_dotl(dir, dentry, omode, 0); | |
225 | } | |
226 | ||
d9585277 | 227 | static int |
e43ae79c | 228 | v9fs_vfs_atomic_open_dotl(struct inode *dir, struct dentry *dentry, |
44907d79 | 229 | struct file *file, unsigned flags, umode_t omode) |
53c06f4e AK |
230 | { |
231 | int err = 0; | |
d4ef4e35 | 232 | kgid_t gid; |
d3fb6120 | 233 | umode_t mode; |
7880b43b | 234 | const unsigned char *name = NULL; |
53c06f4e AK |
235 | struct p9_qid qid; |
236 | struct inode *inode; | |
6b39f6d2 AK |
237 | struct p9_fid *fid = NULL; |
238 | struct v9fs_inode *v9inode; | |
239 | struct p9_fid *dfid, *ofid, *inode_fid; | |
240 | struct v9fs_session_info *v9ses; | |
53c06f4e | 241 | struct posix_acl *pacl = NULL, *dacl = NULL; |
e43ae79c | 242 | struct dentry *res = NULL; |
53c06f4e | 243 | |
00699ad8 | 244 | if (d_in_lookup(dentry)) { |
00cd8dd3 | 245 | res = v9fs_vfs_lookup(dir, dentry, 0); |
e43ae79c | 246 | if (IS_ERR(res)) |
d9585277 | 247 | return PTR_ERR(res); |
e43ae79c MS |
248 | |
249 | if (res) | |
250 | dentry = res; | |
251 | } | |
252 | ||
253 | /* Only creates */ | |
2b0143b5 | 254 | if (!(flags & O_CREAT) || d_really_is_positive(dentry)) |
b6f4bee0 | 255 | return finish_no_open(file, res); |
53c06f4e | 256 | |
e43ae79c MS |
257 | v9ses = v9fs_inode2v9ses(dir); |
258 | ||
7880b43b | 259 | name = dentry->d_name.name; |
609eac1c | 260 | p9_debug(P9_DEBUG_VFS, "name:%s flags:0x%x mode:0x%hx\n", |
5d385153 | 261 | name, flags, omode); |
53c06f4e | 262 | |
77d5a6b7 | 263 | dfid = v9fs_parent_fid(dentry); |
53c06f4e AK |
264 | if (IS_ERR(dfid)) { |
265 | err = PTR_ERR(dfid); | |
5d385153 | 266 | p9_debug(P9_DEBUG_VFS, "fid lookup failed %d\n", err); |
d9585277 | 267 | goto out; |
53c06f4e AK |
268 | } |
269 | ||
270 | /* clone a fid to use for creation */ | |
7d50a29f | 271 | ofid = clone_fid(dfid); |
53c06f4e AK |
272 | if (IS_ERR(ofid)) { |
273 | err = PTR_ERR(ofid); | |
5d385153 | 274 | p9_debug(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err); |
d9585277 | 275 | goto out; |
53c06f4e AK |
276 | } |
277 | ||
278 | gid = v9fs_get_fsgid_for_create(dir); | |
279 | ||
280 | mode = omode; | |
281 | /* Update mode based on ACL value */ | |
282 | err = v9fs_acl_mode(dir, &mode, &dacl, &pacl); | |
283 | if (err) { | |
5d385153 JP |
284 | p9_debug(P9_DEBUG_VFS, "Failed to get acl values in creat %d\n", |
285 | err); | |
53c06f4e AK |
286 | goto error; |
287 | } | |
f88657ce AK |
288 | err = p9_client_create_dotl(ofid, name, v9fs_open_to_dotl_flags(flags), |
289 | mode, gid, &qid); | |
53c06f4e | 290 | if (err < 0) { |
5d385153 JP |
291 | p9_debug(P9_DEBUG_VFS, "p9_client_open_dotl failed in creat %d\n", |
292 | err); | |
53c06f4e AK |
293 | goto error; |
294 | } | |
d28c61f0 | 295 | v9fs_invalidate_inode_attr(dir); |
53c06f4e | 296 | |
af7542fc AK |
297 | /* instantiate inode and assign the unopened fid to the dentry */ |
298 | fid = p9_client_walk(dfid, 1, &name, 1); | |
6636b6dc | 299 | p9_client_clunk(dfid); |
af7542fc AK |
300 | if (IS_ERR(fid)) { |
301 | err = PTR_ERR(fid); | |
5d385153 | 302 | p9_debug(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err); |
53c06f4e | 303 | fid = NULL; |
af7542fc | 304 | goto error; |
53c06f4e | 305 | } |
ed80fcfa | 306 | inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb); |
af7542fc AK |
307 | if (IS_ERR(inode)) { |
308 | err = PTR_ERR(inode); | |
5d385153 | 309 | p9_debug(P9_DEBUG_VFS, "inode creation failed %d\n", err); |
af7542fc AK |
310 | goto error; |
311 | } | |
3592ac44 AV |
312 | /* Now set the ACL based on the default value */ |
313 | v9fs_set_create_acl(inode, fid, dacl, pacl); | |
314 | ||
2ea03e1d | 315 | v9fs_fid_add(dentry, fid); |
5441ae5e | 316 | d_instantiate(dentry, inode); |
af7542fc | 317 | |
6b39f6d2 | 318 | v9inode = V9FS_I(inode); |
5a7e0a8c | 319 | mutex_lock(&v9inode->v_mutex); |
fb89b45c DM |
320 | if ((v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) && |
321 | !v9inode->writeback_fid && | |
7add697a | 322 | ((flags & O_ACCMODE) != O_RDONLY)) { |
3cf387d7 | 323 | /* |
6b39f6d2 | 324 | * clone a fid and add it to writeback_fid |
3cf387d7 AK |
325 | * we do it during open time instead of |
326 | * page dirty time via write_begin/page_mkwrite | |
327 | * because we want write after unlink usecase | |
328 | * to work. | |
329 | */ | |
330 | inode_fid = v9fs_writeback_fid(dentry); | |
331 | if (IS_ERR(inode_fid)) { | |
332 | err = PTR_ERR(inode_fid); | |
5a7e0a8c | 333 | mutex_unlock(&v9inode->v_mutex); |
398c4f0e | 334 | goto err_clunk_old_fid; |
3cf387d7 | 335 | } |
6b39f6d2 | 336 | v9inode->writeback_fid = (void *) inode_fid; |
3cf387d7 | 337 | } |
5a7e0a8c | 338 | mutex_unlock(&v9inode->v_mutex); |
af7542fc | 339 | /* Since we are opening a file, assign the open fid to the file */ |
be12af3e | 340 | err = finish_open(file, dentry, generic_file_open); |
30d90494 | 341 | if (err) |
398c4f0e | 342 | goto err_clunk_old_fid; |
30d90494 | 343 | file->private_data = ofid; |
fb89b45c | 344 | if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) |
30d90494 | 345 | v9fs_cache_inode_set_cookie(inode, file); |
987a6485 | 346 | v9fs_open_fid_add(inode, ofid); |
73a09dd9 | 347 | file->f_mode |= FMODE_CREATED; |
e43ae79c | 348 | out: |
5fa6300a | 349 | v9fs_put_acl(dacl, pacl); |
e43ae79c | 350 | dput(res); |
d9585277 | 351 | return err; |
53c06f4e AK |
352 | |
353 | error: | |
53c06f4e AK |
354 | if (fid) |
355 | p9_client_clunk(fid); | |
398c4f0e AK |
356 | err_clunk_old_fid: |
357 | if (ofid) | |
358 | p9_client_clunk(ofid); | |
e43ae79c | 359 | goto out; |
53c06f4e AK |
360 | } |
361 | ||
362 | /** | |
363 | * v9fs_vfs_mkdir_dotl - VFS mkdir hook to create a directory | |
364 | * @dir: inode that is being unlinked | |
365 | * @dentry: dentry that is being unlinked | |
fd2916bd | 366 | * @omode: mode for new directory |
53c06f4e AK |
367 | * |
368 | */ | |
369 | ||
370 | static int v9fs_vfs_mkdir_dotl(struct inode *dir, | |
18bb1db3 | 371 | struct dentry *dentry, umode_t omode) |
53c06f4e AK |
372 | { |
373 | int err; | |
374 | struct v9fs_session_info *v9ses; | |
375 | struct p9_fid *fid = NULL, *dfid = NULL; | |
d4ef4e35 | 376 | kgid_t gid; |
7880b43b | 377 | const unsigned char *name; |
d3fb6120 | 378 | umode_t mode; |
53c06f4e AK |
379 | struct inode *inode; |
380 | struct p9_qid qid; | |
53c06f4e AK |
381 | struct posix_acl *dacl = NULL, *pacl = NULL; |
382 | ||
4b8e9923 | 383 | p9_debug(P9_DEBUG_VFS, "name %pd\n", dentry); |
53c06f4e AK |
384 | err = 0; |
385 | v9ses = v9fs_inode2v9ses(dir); | |
386 | ||
387 | omode |= S_IFDIR; | |
388 | if (dir->i_mode & S_ISGID) | |
389 | omode |= S_ISGID; | |
390 | ||
77d5a6b7 | 391 | dfid = v9fs_parent_fid(dentry); |
53c06f4e AK |
392 | if (IS_ERR(dfid)) { |
393 | err = PTR_ERR(dfid); | |
5d385153 | 394 | p9_debug(P9_DEBUG_VFS, "fid lookup failed %d\n", err); |
53c06f4e AK |
395 | dfid = NULL; |
396 | goto error; | |
397 | } | |
398 | ||
399 | gid = v9fs_get_fsgid_for_create(dir); | |
400 | mode = omode; | |
401 | /* Update mode based on ACL value */ | |
402 | err = v9fs_acl_mode(dir, &mode, &dacl, &pacl); | |
403 | if (err) { | |
5d385153 JP |
404 | p9_debug(P9_DEBUG_VFS, "Failed to get acl values in mkdir %d\n", |
405 | err); | |
53c06f4e AK |
406 | goto error; |
407 | } | |
7880b43b | 408 | name = dentry->d_name.name; |
53c06f4e AK |
409 | err = p9_client_mkdir_dotl(dfid, name, mode, gid, &qid); |
410 | if (err < 0) | |
411 | goto error; | |
3592ac44 AV |
412 | fid = p9_client_walk(dfid, 1, &name, 1); |
413 | if (IS_ERR(fid)) { | |
414 | err = PTR_ERR(fid); | |
415 | p9_debug(P9_DEBUG_VFS, "p9_client_walk failed %d\n", | |
416 | err); | |
417 | fid = NULL; | |
418 | goto error; | |
419 | } | |
420 | ||
53c06f4e AK |
421 | /* instantiate inode and assign the unopened fid to the dentry */ |
422 | if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) { | |
ed80fcfa | 423 | inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb); |
53c06f4e AK |
424 | if (IS_ERR(inode)) { |
425 | err = PTR_ERR(inode); | |
5d385153 JP |
426 | p9_debug(P9_DEBUG_VFS, "inode creation failed %d\n", |
427 | err); | |
53c06f4e AK |
428 | goto error; |
429 | } | |
2ea03e1d | 430 | v9fs_fid_add(dentry, fid); |
3592ac44 | 431 | v9fs_set_create_acl(inode, fid, dacl, pacl); |
5441ae5e | 432 | d_instantiate(dentry, inode); |
53c06f4e | 433 | fid = NULL; |
2ea03e1d | 434 | err = 0; |
53c06f4e AK |
435 | } else { |
436 | /* | |
437 | * Not in cached mode. No need to populate | |
438 | * inode with stat. We need to get an inode | |
439 | * so that we can set the acl with dentry | |
440 | */ | |
45089142 | 441 | inode = v9fs_get_inode(dir->i_sb, mode, 0); |
53c06f4e AK |
442 | if (IS_ERR(inode)) { |
443 | err = PTR_ERR(inode); | |
444 | goto error; | |
445 | } | |
3592ac44 | 446 | v9fs_set_create_acl(inode, fid, dacl, pacl); |
53c06f4e AK |
447 | d_instantiate(dentry, inode); |
448 | } | |
b271ec47 | 449 | inc_nlink(dir); |
d28c61f0 | 450 | v9fs_invalidate_inode_attr(dir); |
53c06f4e AK |
451 | error: |
452 | if (fid) | |
453 | p9_client_clunk(fid); | |
5fa6300a | 454 | v9fs_put_acl(dacl, pacl); |
6636b6dc | 455 | p9_client_clunk(dfid); |
53c06f4e AK |
456 | return err; |
457 | } | |
458 | ||
459 | static int | |
a528d35e DH |
460 | v9fs_vfs_getattr_dotl(const struct path *path, struct kstat *stat, |
461 | u32 request_mask, unsigned int flags) | |
53c06f4e | 462 | { |
a528d35e | 463 | struct dentry *dentry = path->dentry; |
53c06f4e AK |
464 | struct v9fs_session_info *v9ses; |
465 | struct p9_fid *fid; | |
466 | struct p9_stat_dotl *st; | |
467 | ||
5d385153 | 468 | p9_debug(P9_DEBUG_VFS, "dentry: %p\n", dentry); |
42869c8a | 469 | v9ses = v9fs_dentry2v9ses(dentry); |
a1211908 | 470 | if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) { |
0d56a451 | 471 | generic_fillattr(&init_user_ns, d_inode(dentry), stat); |
a1211908 AK |
472 | return 0; |
473 | } | |
53c06f4e AK |
474 | fid = v9fs_fid_lookup(dentry); |
475 | if (IS_ERR(fid)) | |
476 | return PTR_ERR(fid); | |
477 | ||
478 | /* Ask for all the fields in stat structure. Server will return | |
479 | * whatever it supports | |
480 | */ | |
481 | ||
482 | st = p9_client_getattr_dotl(fid, P9_STATS_ALL); | |
6636b6dc | 483 | p9_client_clunk(fid); |
53c06f4e AK |
484 | if (IS_ERR(st)) |
485 | return PTR_ERR(st); | |
486 | ||
5e3cc1ee | 487 | v9fs_stat2inode_dotl(st, d_inode(dentry), 0); |
0d56a451 | 488 | generic_fillattr(&init_user_ns, d_inode(dentry), stat); |
53c06f4e AK |
489 | /* Change block size to what the server returned */ |
490 | stat->blksize = st->st_blksize; | |
491 | ||
492 | kfree(st); | |
493 | return 0; | |
494 | } | |
495 | ||
f766619d AK |
496 | /* |
497 | * Attribute flags. | |
498 | */ | |
499 | #define P9_ATTR_MODE (1 << 0) | |
500 | #define P9_ATTR_UID (1 << 1) | |
501 | #define P9_ATTR_GID (1 << 2) | |
502 | #define P9_ATTR_SIZE (1 << 3) | |
503 | #define P9_ATTR_ATIME (1 << 4) | |
504 | #define P9_ATTR_MTIME (1 << 5) | |
505 | #define P9_ATTR_CTIME (1 << 6) | |
506 | #define P9_ATTR_ATIME_SET (1 << 7) | |
507 | #define P9_ATTR_MTIME_SET (1 << 8) | |
508 | ||
509 | struct dotl_iattr_map { | |
510 | int iattr_valid; | |
511 | int p9_iattr_valid; | |
512 | }; | |
513 | ||
514 | static int v9fs_mapped_iattr_valid(int iattr_valid) | |
515 | { | |
516 | int i; | |
517 | int p9_iattr_valid = 0; | |
518 | struct dotl_iattr_map dotl_iattr_map[] = { | |
519 | { ATTR_MODE, P9_ATTR_MODE }, | |
520 | { ATTR_UID, P9_ATTR_UID }, | |
521 | { ATTR_GID, P9_ATTR_GID }, | |
522 | { ATTR_SIZE, P9_ATTR_SIZE }, | |
523 | { ATTR_ATIME, P9_ATTR_ATIME }, | |
524 | { ATTR_MTIME, P9_ATTR_MTIME }, | |
525 | { ATTR_CTIME, P9_ATTR_CTIME }, | |
526 | { ATTR_ATIME_SET, P9_ATTR_ATIME_SET }, | |
527 | { ATTR_MTIME_SET, P9_ATTR_MTIME_SET }, | |
528 | }; | |
529 | for (i = 0; i < ARRAY_SIZE(dotl_iattr_map); i++) { | |
530 | if (iattr_valid & dotl_iattr_map[i].iattr_valid) | |
531 | p9_iattr_valid |= dotl_iattr_map[i].p9_iattr_valid; | |
532 | } | |
533 | return p9_iattr_valid; | |
534 | } | |
535 | ||
53c06f4e AK |
536 | /** |
537 | * v9fs_vfs_setattr_dotl - set file metadata | |
538 | * @dentry: file whose metadata to set | |
539 | * @iattr: metadata assignment structure | |
540 | * | |
541 | */ | |
542 | ||
543 | int v9fs_vfs_setattr_dotl(struct dentry *dentry, struct iattr *iattr) | |
544 | { | |
6636b6dc | 545 | int retval, use_dentry = 0; |
66246641 | 546 | struct p9_fid *fid = NULL; |
53c06f4e | 547 | struct p9_iattr_dotl p9attr; |
2b0143b5 | 548 | struct inode *inode = d_inode(dentry); |
53c06f4e | 549 | |
5d385153 | 550 | p9_debug(P9_DEBUG_VFS, "\n"); |
53c06f4e | 551 | |
2f221d6f | 552 | retval = setattr_prepare(&init_user_ns, dentry, iattr); |
53c06f4e AK |
553 | if (retval) |
554 | return retval; | |
555 | ||
f766619d | 556 | p9attr.valid = v9fs_mapped_iattr_valid(iattr->ia_valid); |
53c06f4e AK |
557 | p9attr.mode = iattr->ia_mode; |
558 | p9attr.uid = iattr->ia_uid; | |
559 | p9attr.gid = iattr->ia_gid; | |
560 | p9attr.size = iattr->ia_size; | |
561 | p9attr.atime_sec = iattr->ia_atime.tv_sec; | |
562 | p9attr.atime_nsec = iattr->ia_atime.tv_nsec; | |
563 | p9attr.mtime_sec = iattr->ia_mtime.tv_sec; | |
564 | p9attr.mtime_nsec = iattr->ia_mtime.tv_nsec; | |
565 | ||
66246641 JW |
566 | if (iattr->ia_valid & ATTR_FILE) { |
567 | fid = iattr->ia_file->private_data; | |
568 | WARN_ON(!fid); | |
569 | } | |
6636b6dc | 570 | if (!fid) { |
66246641 | 571 | fid = v9fs_fid_lookup(dentry); |
6636b6dc JW |
572 | use_dentry = 1; |
573 | } | |
53c06f4e AK |
574 | if (IS_ERR(fid)) |
575 | return PTR_ERR(fid); | |
576 | ||
3dc5436a | 577 | /* Write all dirty data */ |
be308f07 AV |
578 | if (S_ISREG(inode->i_mode)) |
579 | filemap_write_and_wait(inode->i_mapping); | |
3dc5436a | 580 | |
f10fc50f | 581 | retval = p9_client_setattr(fid, &p9attr); |
6636b6dc JW |
582 | if (retval < 0) { |
583 | if (use_dentry) | |
584 | p9_client_clunk(fid); | |
f10fc50f | 585 | return retval; |
6636b6dc | 586 | } |
53c06f4e | 587 | |
059c138b | 588 | if ((iattr->ia_valid & ATTR_SIZE) && |
be308f07 AV |
589 | iattr->ia_size != i_size_read(inode)) |
590 | truncate_setsize(inode, iattr->ia_size); | |
059c138b | 591 | |
be308f07 | 592 | v9fs_invalidate_inode_attr(inode); |
2f221d6f | 593 | setattr_copy(&init_user_ns, inode, iattr); |
be308f07 | 594 | mark_inode_dirty(inode); |
53c06f4e AK |
595 | if (iattr->ia_valid & ATTR_MODE) { |
596 | /* We also want to update ACL when we update mode bits */ | |
be308f07 | 597 | retval = v9fs_acl_chmod(inode, fid); |
6636b6dc JW |
598 | if (retval < 0) { |
599 | if (use_dentry) | |
600 | p9_client_clunk(fid); | |
53c06f4e | 601 | return retval; |
6636b6dc | 602 | } |
53c06f4e | 603 | } |
6636b6dc JW |
604 | if (use_dentry) |
605 | p9_client_clunk(fid); | |
606 | ||
53c06f4e AK |
607 | return 0; |
608 | } | |
609 | ||
610 | /** | |
611 | * v9fs_stat2inode_dotl - populate an inode structure with stat info | |
612 | * @stat: stat structure | |
613 | * @inode: inode to populate | |
5e3cc1ee | 614 | * @flags: ctrl flags (e.g. V9FS_STAT2INODE_KEEP_ISIZE) |
53c06f4e AK |
615 | * |
616 | */ | |
617 | ||
618 | void | |
5e3cc1ee HT |
619 | v9fs_stat2inode_dotl(struct p9_stat_dotl *stat, struct inode *inode, |
620 | unsigned int flags) | |
53c06f4e | 621 | { |
3eda0de6 | 622 | umode_t mode; |
b3cbea03 | 623 | struct v9fs_inode *v9inode = V9FS_I(inode); |
53c06f4e AK |
624 | |
625 | if ((stat->st_result_mask & P9_STATS_BASIC) == P9_STATS_BASIC) { | |
626 | inode->i_atime.tv_sec = stat->st_atime_sec; | |
627 | inode->i_atime.tv_nsec = stat->st_atime_nsec; | |
628 | inode->i_mtime.tv_sec = stat->st_mtime_sec; | |
629 | inode->i_mtime.tv_nsec = stat->st_mtime_nsec; | |
630 | inode->i_ctime.tv_sec = stat->st_ctime_sec; | |
631 | inode->i_ctime.tv_nsec = stat->st_ctime_nsec; | |
632 | inode->i_uid = stat->st_uid; | |
633 | inode->i_gid = stat->st_gid; | |
bfe86848 | 634 | set_nlink(inode, stat->st_nlink); |
53c06f4e | 635 | |
45089142 AK |
636 | mode = stat->st_mode & S_IALLUGO; |
637 | mode |= inode->i_mode & ~S_IALLUGO; | |
638 | inode->i_mode = mode; | |
53c06f4e | 639 | |
5e3cc1ee HT |
640 | if (!(flags & V9FS_STAT2INODE_KEEP_ISIZE)) |
641 | v9fs_i_size_write(inode, stat->st_size); | |
53c06f4e AK |
642 | inode->i_blocks = stat->st_blocks; |
643 | } else { | |
644 | if (stat->st_result_mask & P9_STATS_ATIME) { | |
645 | inode->i_atime.tv_sec = stat->st_atime_sec; | |
646 | inode->i_atime.tv_nsec = stat->st_atime_nsec; | |
647 | } | |
648 | if (stat->st_result_mask & P9_STATS_MTIME) { | |
649 | inode->i_mtime.tv_sec = stat->st_mtime_sec; | |
650 | inode->i_mtime.tv_nsec = stat->st_mtime_nsec; | |
651 | } | |
652 | if (stat->st_result_mask & P9_STATS_CTIME) { | |
653 | inode->i_ctime.tv_sec = stat->st_ctime_sec; | |
654 | inode->i_ctime.tv_nsec = stat->st_ctime_nsec; | |
655 | } | |
656 | if (stat->st_result_mask & P9_STATS_UID) | |
657 | inode->i_uid = stat->st_uid; | |
658 | if (stat->st_result_mask & P9_STATS_GID) | |
659 | inode->i_gid = stat->st_gid; | |
660 | if (stat->st_result_mask & P9_STATS_NLINK) | |
bfe86848 | 661 | set_nlink(inode, stat->st_nlink); |
53c06f4e AK |
662 | if (stat->st_result_mask & P9_STATS_MODE) { |
663 | inode->i_mode = stat->st_mode; | |
664 | if ((S_ISBLK(inode->i_mode)) || | |
665 | (S_ISCHR(inode->i_mode))) | |
666 | init_special_inode(inode, inode->i_mode, | |
667 | inode->i_rdev); | |
668 | } | |
669 | if (stat->st_result_mask & P9_STATS_RDEV) | |
670 | inode->i_rdev = new_decode_dev(stat->st_rdev); | |
5e3cc1ee HT |
671 | if (!(flags & V9FS_STAT2INODE_KEEP_ISIZE) && |
672 | stat->st_result_mask & P9_STATS_SIZE) | |
673 | v9fs_i_size_write(inode, stat->st_size); | |
53c06f4e AK |
674 | if (stat->st_result_mask & P9_STATS_BLOCKS) |
675 | inode->i_blocks = stat->st_blocks; | |
676 | } | |
677 | if (stat->st_result_mask & P9_STATS_GEN) | |
fd2421f5 | 678 | inode->i_generation = stat->st_gen; |
53c06f4e AK |
679 | |
680 | /* Currently we don't support P9_STATS_BTIME and P9_STATS_DATA_VERSION | |
681 | * because the inode structure does not have fields for them. | |
682 | */ | |
b3cbea03 | 683 | v9inode->cache_validity &= ~V9FS_INO_INVALID_ATTR; |
53c06f4e AK |
684 | } |
685 | ||
686 | static int | |
687 | v9fs_vfs_symlink_dotl(struct inode *dir, struct dentry *dentry, | |
688 | const char *symname) | |
689 | { | |
53c06f4e | 690 | int err; |
d4ef4e35 | 691 | kgid_t gid; |
7880b43b | 692 | const unsigned char *name; |
d28c61f0 AK |
693 | struct p9_qid qid; |
694 | struct inode *inode; | |
695 | struct p9_fid *dfid; | |
696 | struct p9_fid *fid = NULL; | |
697 | struct v9fs_session_info *v9ses; | |
53c06f4e | 698 | |
7880b43b | 699 | name = dentry->d_name.name; |
5d385153 | 700 | p9_debug(P9_DEBUG_VFS, "%lu,%s,%s\n", dir->i_ino, name, symname); |
53c06f4e AK |
701 | v9ses = v9fs_inode2v9ses(dir); |
702 | ||
77d5a6b7 | 703 | dfid = v9fs_parent_fid(dentry); |
53c06f4e AK |
704 | if (IS_ERR(dfid)) { |
705 | err = PTR_ERR(dfid); | |
5d385153 | 706 | p9_debug(P9_DEBUG_VFS, "fid lookup failed %d\n", err); |
53c06f4e AK |
707 | return err; |
708 | } | |
709 | ||
710 | gid = v9fs_get_fsgid_for_create(dir); | |
711 | ||
712 | /* Server doesn't alter fid on TSYMLINK. Hence no need to clone it. */ | |
7880b43b | 713 | err = p9_client_symlink(dfid, name, symname, gid, &qid); |
53c06f4e AK |
714 | |
715 | if (err < 0) { | |
5d385153 | 716 | p9_debug(P9_DEBUG_VFS, "p9_client_symlink failed %d\n", err); |
53c06f4e AK |
717 | goto error; |
718 | } | |
719 | ||
d28c61f0 | 720 | v9fs_invalidate_inode_attr(dir); |
fb89b45c | 721 | if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) { |
53c06f4e AK |
722 | /* Now walk from the parent so we can get an unopened fid. */ |
723 | fid = p9_client_walk(dfid, 1, &name, 1); | |
724 | if (IS_ERR(fid)) { | |
725 | err = PTR_ERR(fid); | |
5d385153 JP |
726 | p9_debug(P9_DEBUG_VFS, "p9_client_walk failed %d\n", |
727 | err); | |
53c06f4e AK |
728 | fid = NULL; |
729 | goto error; | |
730 | } | |
731 | ||
732 | /* instantiate inode and assign the unopened fid to dentry */ | |
ed80fcfa | 733 | inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb); |
53c06f4e AK |
734 | if (IS_ERR(inode)) { |
735 | err = PTR_ERR(inode); | |
5d385153 JP |
736 | p9_debug(P9_DEBUG_VFS, "inode creation failed %d\n", |
737 | err); | |
53c06f4e AK |
738 | goto error; |
739 | } | |
2ea03e1d | 740 | v9fs_fid_add(dentry, fid); |
5441ae5e | 741 | d_instantiate(dentry, inode); |
53c06f4e | 742 | fid = NULL; |
2ea03e1d | 743 | err = 0; |
53c06f4e AK |
744 | } else { |
745 | /* Not in cached mode. No need to populate inode with stat */ | |
45089142 | 746 | inode = v9fs_get_inode(dir->i_sb, S_IFLNK, 0); |
53c06f4e AK |
747 | if (IS_ERR(inode)) { |
748 | err = PTR_ERR(inode); | |
749 | goto error; | |
750 | } | |
53c06f4e AK |
751 | d_instantiate(dentry, inode); |
752 | } | |
753 | ||
754 | error: | |
755 | if (fid) | |
756 | p9_client_clunk(fid); | |
757 | ||
6636b6dc | 758 | p9_client_clunk(dfid); |
53c06f4e AK |
759 | return err; |
760 | } | |
761 | ||
762 | /** | |
763 | * v9fs_vfs_link_dotl - create a hardlink for dotl | |
764 | * @old_dentry: dentry for file to link to | |
765 | * @dir: inode destination for new link | |
766 | * @dentry: dentry for link | |
767 | * | |
768 | */ | |
769 | ||
770 | static int | |
771 | v9fs_vfs_link_dotl(struct dentry *old_dentry, struct inode *dir, | |
772 | struct dentry *dentry) | |
773 | { | |
774 | int err; | |
d28c61f0 AK |
775 | struct p9_fid *dfid, *oldfid; |
776 | struct v9fs_session_info *v9ses; | |
53c06f4e | 777 | |
4b8e9923 AV |
778 | p9_debug(P9_DEBUG_VFS, "dir ino: %lu, old_name: %pd, new_name: %pd\n", |
779 | dir->i_ino, old_dentry, dentry); | |
53c06f4e AK |
780 | |
781 | v9ses = v9fs_inode2v9ses(dir); | |
77d5a6b7 | 782 | dfid = v9fs_parent_fid(dentry); |
53c06f4e AK |
783 | if (IS_ERR(dfid)) |
784 | return PTR_ERR(dfid); | |
785 | ||
786 | oldfid = v9fs_fid_lookup(old_dentry); | |
6636b6dc JW |
787 | if (IS_ERR(oldfid)) { |
788 | p9_client_clunk(dfid); | |
53c06f4e | 789 | return PTR_ERR(oldfid); |
6636b6dc | 790 | } |
53c06f4e | 791 | |
7880b43b | 792 | err = p9_client_link(dfid, oldfid, dentry->d_name.name); |
53c06f4e | 793 | |
6636b6dc JW |
794 | p9_client_clunk(dfid); |
795 | p9_client_clunk(oldfid); | |
53c06f4e | 796 | if (err < 0) { |
5d385153 | 797 | p9_debug(P9_DEBUG_VFS, "p9_client_link failed %d\n", err); |
53c06f4e AK |
798 | return err; |
799 | } | |
800 | ||
d28c61f0 | 801 | v9fs_invalidate_inode_attr(dir); |
53c06f4e AK |
802 | if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) { |
803 | /* Get the latest stat info from server. */ | |
804 | struct p9_fid *fid; | |
53c06f4e AK |
805 | fid = v9fs_fid_lookup(old_dentry); |
806 | if (IS_ERR(fid)) | |
807 | return PTR_ERR(fid); | |
808 | ||
2b0143b5 | 809 | v9fs_refresh_inode_dotl(fid, d_inode(old_dentry)); |
6636b6dc | 810 | p9_client_clunk(fid); |
53c06f4e | 811 | } |
2b0143b5 DH |
812 | ihold(d_inode(old_dentry)); |
813 | d_instantiate(dentry, d_inode(old_dentry)); | |
53c06f4e AK |
814 | |
815 | return err; | |
816 | } | |
817 | ||
818 | /** | |
819 | * v9fs_vfs_mknod_dotl - create a special file | |
820 | * @dir: inode destination for new link | |
821 | * @dentry: dentry for file | |
fd2916bd | 822 | * @omode: mode for creation |
53c06f4e AK |
823 | * @rdev: device associated with special file |
824 | * | |
825 | */ | |
826 | static int | |
1a67aafb | 827 | v9fs_vfs_mknod_dotl(struct inode *dir, struct dentry *dentry, umode_t omode, |
53c06f4e AK |
828 | dev_t rdev) |
829 | { | |
830 | int err; | |
d4ef4e35 | 831 | kgid_t gid; |
7880b43b | 832 | const unsigned char *name; |
d3fb6120 | 833 | umode_t mode; |
53c06f4e AK |
834 | struct v9fs_session_info *v9ses; |
835 | struct p9_fid *fid = NULL, *dfid = NULL; | |
836 | struct inode *inode; | |
53c06f4e | 837 | struct p9_qid qid; |
53c06f4e AK |
838 | struct posix_acl *dacl = NULL, *pacl = NULL; |
839 | ||
a455589f AV |
840 | p9_debug(P9_DEBUG_VFS, " %lu,%pd mode: %hx MAJOR: %u MINOR: %u\n", |
841 | dir->i_ino, dentry, omode, | |
5d385153 | 842 | MAJOR(rdev), MINOR(rdev)); |
53c06f4e | 843 | |
53c06f4e | 844 | v9ses = v9fs_inode2v9ses(dir); |
77d5a6b7 | 845 | dfid = v9fs_parent_fid(dentry); |
53c06f4e AK |
846 | if (IS_ERR(dfid)) { |
847 | err = PTR_ERR(dfid); | |
5d385153 | 848 | p9_debug(P9_DEBUG_VFS, "fid lookup failed %d\n", err); |
53c06f4e AK |
849 | dfid = NULL; |
850 | goto error; | |
851 | } | |
852 | ||
853 | gid = v9fs_get_fsgid_for_create(dir); | |
854 | mode = omode; | |
855 | /* Update mode based on ACL value */ | |
856 | err = v9fs_acl_mode(dir, &mode, &dacl, &pacl); | |
857 | if (err) { | |
5d385153 JP |
858 | p9_debug(P9_DEBUG_VFS, "Failed to get acl values in mknod %d\n", |
859 | err); | |
53c06f4e AK |
860 | goto error; |
861 | } | |
7880b43b | 862 | name = dentry->d_name.name; |
53c06f4e AK |
863 | |
864 | err = p9_client_mknod_dotl(dfid, name, mode, rdev, gid, &qid); | |
865 | if (err < 0) | |
866 | goto error; | |
867 | ||
d28c61f0 | 868 | v9fs_invalidate_inode_attr(dir); |
3592ac44 AV |
869 | fid = p9_client_walk(dfid, 1, &name, 1); |
870 | if (IS_ERR(fid)) { | |
871 | err = PTR_ERR(fid); | |
872 | p9_debug(P9_DEBUG_VFS, "p9_client_walk failed %d\n", | |
873 | err); | |
874 | fid = NULL; | |
875 | goto error; | |
876 | } | |
877 | ||
53c06f4e AK |
878 | /* instantiate inode and assign the unopened fid to the dentry */ |
879 | if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) { | |
ed80fcfa | 880 | inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb); |
53c06f4e AK |
881 | if (IS_ERR(inode)) { |
882 | err = PTR_ERR(inode); | |
5d385153 JP |
883 | p9_debug(P9_DEBUG_VFS, "inode creation failed %d\n", |
884 | err); | |
53c06f4e AK |
885 | goto error; |
886 | } | |
3592ac44 | 887 | v9fs_set_create_acl(inode, fid, dacl, pacl); |
2ea03e1d | 888 | v9fs_fid_add(dentry, fid); |
5441ae5e | 889 | d_instantiate(dentry, inode); |
53c06f4e | 890 | fid = NULL; |
2ea03e1d | 891 | err = 0; |
53c06f4e AK |
892 | } else { |
893 | /* | |
894 | * Not in cached mode. No need to populate inode with stat. | |
895 | * socket syscall returns a fd, so we need instantiate | |
896 | */ | |
45089142 | 897 | inode = v9fs_get_inode(dir->i_sb, mode, rdev); |
53c06f4e AK |
898 | if (IS_ERR(inode)) { |
899 | err = PTR_ERR(inode); | |
900 | goto error; | |
901 | } | |
3592ac44 | 902 | v9fs_set_create_acl(inode, fid, dacl, pacl); |
53c06f4e AK |
903 | d_instantiate(dentry, inode); |
904 | } | |
53c06f4e AK |
905 | error: |
906 | if (fid) | |
907 | p9_client_clunk(fid); | |
5fa6300a | 908 | v9fs_put_acl(dacl, pacl); |
6636b6dc JW |
909 | p9_client_clunk(dfid); |
910 | ||
53c06f4e AK |
911 | return err; |
912 | } | |
913 | ||
53c06f4e | 914 | /** |
6b255391 | 915 | * v9fs_vfs_get_link_dotl - follow a symlink path |
53c06f4e | 916 | * @dentry: dentry for symlink |
6b255391 | 917 | * @inode: inode for symlink |
fceef393 | 918 | * @done: destructor for return value |
53c06f4e AK |
919 | */ |
920 | ||
680baacb | 921 | static const char * |
6b255391 | 922 | v9fs_vfs_get_link_dotl(struct dentry *dentry, |
fceef393 AV |
923 | struct inode *inode, |
924 | struct delayed_call *done) | |
53c06f4e | 925 | { |
6b255391 | 926 | struct p9_fid *fid; |
31b6ceac | 927 | char *target; |
90e4fc88 | 928 | int retval; |
53c06f4e | 929 | |
6b255391 AV |
930 | if (!dentry) |
931 | return ERR_PTR(-ECHILD); | |
932 | ||
4b8e9923 | 933 | p9_debug(P9_DEBUG_VFS, "%pd\n", dentry); |
53c06f4e | 934 | |
6b255391 | 935 | fid = v9fs_fid_lookup(dentry); |
90e4fc88 AV |
936 | if (IS_ERR(fid)) |
937 | return ERR_CAST(fid); | |
31b6ceac | 938 | retval = p9_client_readlink(fid, &target); |
6636b6dc | 939 | p9_client_clunk(fid); |
90e4fc88 AV |
940 | if (retval) |
941 | return ERR_PTR(retval); | |
fceef393 AV |
942 | set_delayed_call(done, kfree_link, target); |
943 | return target; | |
53c06f4e AK |
944 | } |
945 | ||
b3cbea03 AK |
946 | int v9fs_refresh_inode_dotl(struct p9_fid *fid, struct inode *inode) |
947 | { | |
b3cbea03 AK |
948 | struct p9_stat_dotl *st; |
949 | struct v9fs_session_info *v9ses; | |
5e3cc1ee | 950 | unsigned int flags; |
b3cbea03 AK |
951 | |
952 | v9ses = v9fs_inode2v9ses(inode); | |
953 | st = p9_client_getattr_dotl(fid, P9_STATS_ALL); | |
954 | if (IS_ERR(st)) | |
955 | return PTR_ERR(st); | |
45089142 AK |
956 | /* |
957 | * Don't update inode if the file type is different | |
958 | */ | |
959 | if ((inode->i_mode & S_IFMT) != (st->st_mode & S_IFMT)) | |
960 | goto out; | |
b3cbea03 | 961 | |
b3cbea03 AK |
962 | /* |
963 | * We don't want to refresh inode->i_size, | |
964 | * because we may have cached data | |
965 | */ | |
5e3cc1ee HT |
966 | flags = (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) ? |
967 | V9FS_STAT2INODE_KEEP_ISIZE : 0; | |
968 | v9fs_stat2inode_dotl(st, inode, flags); | |
45089142 | 969 | out: |
b3cbea03 AK |
970 | kfree(st); |
971 | return 0; | |
972 | } | |
973 | ||
53c06f4e AK |
974 | const struct inode_operations v9fs_dir_inode_operations_dotl = { |
975 | .create = v9fs_vfs_create_dotl, | |
e43ae79c | 976 | .atomic_open = v9fs_vfs_atomic_open_dotl, |
53c06f4e AK |
977 | .lookup = v9fs_vfs_lookup, |
978 | .link = v9fs_vfs_link_dotl, | |
979 | .symlink = v9fs_vfs_symlink_dotl, | |
980 | .unlink = v9fs_vfs_unlink, | |
981 | .mkdir = v9fs_vfs_mkdir_dotl, | |
982 | .rmdir = v9fs_vfs_rmdir, | |
983 | .mknod = v9fs_vfs_mknod_dotl, | |
984 | .rename = v9fs_vfs_rename, | |
985 | .getattr = v9fs_vfs_getattr_dotl, | |
986 | .setattr = v9fs_vfs_setattr_dotl, | |
53c06f4e | 987 | .listxattr = v9fs_listxattr, |
4e34e719 | 988 | .get_acl = v9fs_iop_get_acl, |
53c06f4e AK |
989 | }; |
990 | ||
991 | const struct inode_operations v9fs_file_inode_operations_dotl = { | |
992 | .getattr = v9fs_vfs_getattr_dotl, | |
993 | .setattr = v9fs_vfs_setattr_dotl, | |
53c06f4e | 994 | .listxattr = v9fs_listxattr, |
4e34e719 | 995 | .get_acl = v9fs_iop_get_acl, |
53c06f4e AK |
996 | }; |
997 | ||
998 | const struct inode_operations v9fs_symlink_inode_operations_dotl = { | |
6b255391 | 999 | .get_link = v9fs_vfs_get_link_dotl, |
53c06f4e AK |
1000 | .getattr = v9fs_vfs_getattr_dotl, |
1001 | .setattr = v9fs_vfs_setattr_dotl, | |
53c06f4e AK |
1002 | .listxattr = v9fs_listxattr, |
1003 | }; |