Commit | Line | Data |
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1f327613 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
53c06f4e | 2 | /* |
53c06f4e AK |
3 | * This file contains vfs inode ops for the 9P2000.L protocol. |
4 | * | |
5 | * Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com> | |
6 | * Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov> | |
53c06f4e AK |
7 | */ |
8 | ||
9 | #include <linux/module.h> | |
10 | #include <linux/errno.h> | |
11 | #include <linux/fs.h> | |
12 | #include <linux/file.h> | |
13 | #include <linux/pagemap.h> | |
14 | #include <linux/stat.h> | |
15 | #include <linux/string.h> | |
53c06f4e | 16 | #include <linux/namei.h> |
53c06f4e AK |
17 | #include <linux/sched.h> |
18 | #include <linux/slab.h> | |
19 | #include <linux/xattr.h> | |
20 | #include <linux/posix_acl.h> | |
21 | #include <net/9p/9p.h> | |
22 | #include <net/9p/client.h> | |
23 | ||
24 | #include "v9fs.h" | |
25 | #include "v9fs_vfs.h" | |
26 | #include "fid.h" | |
27 | #include "cache.h" | |
28 | #include "xattr.h" | |
29 | #include "acl.h" | |
30 | ||
31 | static int | |
5ebb29be | 32 | v9fs_vfs_mknod_dotl(struct mnt_idmap *idmap, struct inode *dir, |
549c7297 | 33 | struct dentry *dentry, umode_t omode, dev_t rdev); |
53c06f4e AK |
34 | |
35 | /** | |
bc868036 DH |
36 | * v9fs_get_fsgid_for_create - Helper function to get the gid for a new object |
37 | * @dir_inode: The directory inode | |
38 | * | |
39 | * Helper function to get the gid for creating a | |
53c06f4e AK |
40 | * new file system object. This checks the S_ISGID to determine the owning |
41 | * group of the new file system object. | |
42 | */ | |
43 | ||
d4ef4e35 | 44 | static kgid_t v9fs_get_fsgid_for_create(struct inode *dir_inode) |
53c06f4e AK |
45 | { |
46 | BUG_ON(dir_inode == NULL); | |
47 | ||
48 | if (dir_inode->i_mode & S_ISGID) { | |
49 | /* set_gid bit is set.*/ | |
50 | return dir_inode->i_gid; | |
51 | } | |
52 | return current_fsgid(); | |
53 | } | |
54 | ||
fd2421f5 AK |
55 | static int v9fs_test_inode_dotl(struct inode *inode, void *data) |
56 | { | |
57 | struct v9fs_inode *v9inode = V9FS_I(inode); | |
58 | struct p9_stat_dotl *st = (struct p9_stat_dotl *)data; | |
59 | ||
60 | /* don't match inode of different type */ | |
6e3e2c43 | 61 | if (inode_wrong_type(inode, st->st_mode)) |
fd2421f5 AK |
62 | return 0; |
63 | ||
64 | if (inode->i_generation != st->st_gen) | |
65 | return 0; | |
66 | ||
67 | /* compare qid details */ | |
68 | if (memcmp(&v9inode->qid.version, | |
69 | &st->qid.version, sizeof(v9inode->qid.version))) | |
70 | return 0; | |
71 | ||
72 | if (v9inode->qid.type != st->qid.type) | |
73 | return 0; | |
8ee03163 TT |
74 | |
75 | if (v9inode->qid.path != st->qid.path) | |
76 | return 0; | |
fd2421f5 AK |
77 | return 1; |
78 | } | |
79 | ||
ed80fcfa AK |
80 | /* Always get a new inode */ |
81 | static int v9fs_test_new_inode_dotl(struct inode *inode, void *data) | |
82 | { | |
83 | return 0; | |
84 | } | |
85 | ||
fd2421f5 AK |
86 | static int v9fs_set_inode_dotl(struct inode *inode, void *data) |
87 | { | |
88 | struct v9fs_inode *v9inode = V9FS_I(inode); | |
89 | struct p9_stat_dotl *st = (struct p9_stat_dotl *)data; | |
90 | ||
91 | memcpy(&v9inode->qid, &st->qid, sizeof(st->qid)); | |
92 | inode->i_generation = st->st_gen; | |
93 | return 0; | |
94 | } | |
95 | ||
5ffc0cb3 AK |
96 | static struct inode *v9fs_qid_iget_dotl(struct super_block *sb, |
97 | struct p9_qid *qid, | |
98 | struct p9_fid *fid, | |
ed80fcfa AK |
99 | struct p9_stat_dotl *st, |
100 | int new) | |
5ffc0cb3 AK |
101 | { |
102 | int retval; | |
103 | unsigned long i_ino; | |
104 | struct inode *inode; | |
105 | struct v9fs_session_info *v9ses = sb->s_fs_info; | |
6e195b0f | 106 | int (*test)(struct inode *inode, void *data); |
ed80fcfa AK |
107 | |
108 | if (new) | |
109 | test = v9fs_test_new_inode_dotl; | |
110 | else | |
111 | test = v9fs_test_inode_dotl; | |
5ffc0cb3 AK |
112 | |
113 | i_ino = v9fs_qid2ino(qid); | |
ed80fcfa | 114 | inode = iget5_locked(sb, i_ino, test, v9fs_set_inode_dotl, st); |
5ffc0cb3 AK |
115 | if (!inode) |
116 | return ERR_PTR(-ENOMEM); | |
117 | if (!(inode->i_state & I_NEW)) | |
118 | return inode; | |
119 | /* | |
120 | * initialize the inode with the stat info | |
121 | * FIXME!! we may need support for stale inodes | |
122 | * later. | |
123 | */ | |
fd2421f5 | 124 | inode->i_ino = i_ino; |
45089142 AK |
125 | retval = v9fs_init_inode(v9ses, inode, |
126 | st->st_mode, new_decode_dev(st->st_rdev)); | |
5ffc0cb3 AK |
127 | if (retval) |
128 | goto error; | |
129 | ||
5e3cc1ee | 130 | v9fs_stat2inode_dotl(st, inode, 0); |
5ffc0cb3 | 131 | v9fs_cache_inode_get_cookie(inode); |
5ffc0cb3 AK |
132 | retval = v9fs_get_acl(inode, fid); |
133 | if (retval) | |
134 | goto error; | |
135 | ||
136 | unlock_new_inode(inode); | |
137 | return inode; | |
138 | error: | |
0a73d0a2 | 139 | iget_failed(inode); |
5ffc0cb3 AK |
140 | return ERR_PTR(retval); |
141 | ||
142 | } | |
143 | ||
53c06f4e | 144 | struct inode * |
a78ce05d | 145 | v9fs_inode_from_fid_dotl(struct v9fs_session_info *v9ses, struct p9_fid *fid, |
ed80fcfa | 146 | struct super_block *sb, int new) |
53c06f4e | 147 | { |
53c06f4e | 148 | struct p9_stat_dotl *st; |
5ffc0cb3 | 149 | struct inode *inode = NULL; |
53c06f4e | 150 | |
fd2421f5 | 151 | st = p9_client_getattr_dotl(fid, P9_STATS_BASIC | P9_STATS_GEN); |
53c06f4e AK |
152 | if (IS_ERR(st)) |
153 | return ERR_CAST(st); | |
154 | ||
ed80fcfa | 155 | inode = v9fs_qid_iget_dotl(sb, &st->qid, fid, st, new); |
53c06f4e | 156 | kfree(st); |
5ffc0cb3 | 157 | return inode; |
53c06f4e AK |
158 | } |
159 | ||
f88657ce AK |
160 | struct dotl_openflag_map { |
161 | int open_flag; | |
162 | int dotl_flag; | |
163 | }; | |
164 | ||
165 | static int v9fs_mapped_dotl_flags(int flags) | |
166 | { | |
167 | int i; | |
168 | int rflags = 0; | |
169 | struct dotl_openflag_map dotl_oflag_map[] = { | |
170 | { O_CREAT, P9_DOTL_CREATE }, | |
171 | { O_EXCL, P9_DOTL_EXCL }, | |
172 | { O_NOCTTY, P9_DOTL_NOCTTY }, | |
f88657ce AK |
173 | { O_APPEND, P9_DOTL_APPEND }, |
174 | { O_NONBLOCK, P9_DOTL_NONBLOCK }, | |
175 | { O_DSYNC, P9_DOTL_DSYNC }, | |
176 | { FASYNC, P9_DOTL_FASYNC }, | |
177 | { O_DIRECT, P9_DOTL_DIRECT }, | |
178 | { O_LARGEFILE, P9_DOTL_LARGEFILE }, | |
179 | { O_DIRECTORY, P9_DOTL_DIRECTORY }, | |
180 | { O_NOFOLLOW, P9_DOTL_NOFOLLOW }, | |
181 | { O_NOATIME, P9_DOTL_NOATIME }, | |
182 | { O_CLOEXEC, P9_DOTL_CLOEXEC }, | |
183 | { O_SYNC, P9_DOTL_SYNC}, | |
184 | }; | |
185 | for (i = 0; i < ARRAY_SIZE(dotl_oflag_map); i++) { | |
186 | if (flags & dotl_oflag_map[i].open_flag) | |
187 | rflags |= dotl_oflag_map[i].dotl_flag; | |
188 | } | |
189 | return rflags; | |
190 | } | |
191 | ||
192 | /** | |
193 | * v9fs_open_to_dotl_flags- convert Linux specific open flags to | |
194 | * plan 9 open flag. | |
195 | * @flags: flags to convert | |
196 | */ | |
197 | int v9fs_open_to_dotl_flags(int flags) | |
198 | { | |
199 | int rflags = 0; | |
200 | ||
201 | /* | |
202 | * We have same bits for P9_DOTL_READONLY, P9_DOTL_WRONLY | |
203 | * and P9_DOTL_NOACCESS | |
204 | */ | |
205 | rflags |= flags & O_ACCMODE; | |
206 | rflags |= v9fs_mapped_dotl_flags(flags); | |
207 | ||
208 | return rflags; | |
209 | } | |
210 | ||
53c06f4e AK |
211 | /** |
212 | * v9fs_vfs_create_dotl - VFS hook to create files for 9P2000.L protocol. | |
6c960e68 | 213 | * @idmap: The user namespace of the mount |
53c06f4e AK |
214 | * @dir: directory inode that is being created |
215 | * @dentry: dentry that is being deleted | |
fd2916bd | 216 | * @omode: create permissions |
bc868036 | 217 | * @excl: True if the file must not yet exist |
53c06f4e AK |
218 | * |
219 | */ | |
53c06f4e | 220 | static int |
6c960e68 | 221 | v9fs_vfs_create_dotl(struct mnt_idmap *idmap, struct inode *dir, |
549c7297 | 222 | struct dentry *dentry, umode_t omode, bool excl) |
e43ae79c | 223 | { |
5ebb29be | 224 | return v9fs_vfs_mknod_dotl(idmap, dir, dentry, omode, 0); |
e43ae79c MS |
225 | } |
226 | ||
d9585277 | 227 | static int |
e43ae79c | 228 | v9fs_vfs_atomic_open_dotl(struct inode *dir, struct dentry *dentry, |
6e195b0f | 229 | struct file *file, unsigned int flags, umode_t omode) |
53c06f4e AK |
230 | { |
231 | int err = 0; | |
d4ef4e35 | 232 | kgid_t gid; |
d3fb6120 | 233 | umode_t mode; |
1543b4c5 | 234 | int p9_omode = v9fs_open_to_dotl_flags(flags); |
7880b43b | 235 | const unsigned char *name = NULL; |
53c06f4e AK |
236 | struct p9_qid qid; |
237 | struct inode *inode; | |
6b39f6d2 | 238 | struct p9_fid *fid = NULL; |
1543b4c5 | 239 | struct p9_fid *dfid = NULL, *ofid = NULL; |
6b39f6d2 | 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; |
6e195b0f | 260 | p9_debug(P9_DEBUG_VFS, "name:%s flags:0x%x mode:0x%x\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) { | |
1543b4c5 | 284 | p9_debug(P9_DEBUG_VFS, "Failed to get acl values in create %d\n", |
5d385153 | 285 | err); |
dafbe689 | 286 | goto out; |
53c06f4e | 287 | } |
1543b4c5 | 288 | |
4eb31178 | 289 | if ((v9ses->cache & CACHE_WRITEBACK) && (p9_omode & P9_OWRITE)) { |
21e26d5e | 290 | p9_omode = (p9_omode & ~P9_OWRITE) | P9_ORDWR; |
1543b4c5 EVH |
291 | p9_debug(P9_DEBUG_CACHE, |
292 | "write-only file with writeback enabled, creating w/ O_RDWR\n"); | |
293 | } | |
294 | err = p9_client_create_dotl(ofid, name, p9_omode, mode, gid, &qid); | |
53c06f4e | 295 | if (err < 0) { |
1543b4c5 | 296 | p9_debug(P9_DEBUG_VFS, "p9_client_open_dotl failed in create %d\n", |
5d385153 | 297 | err); |
dafbe689 | 298 | goto out; |
53c06f4e | 299 | } |
d28c61f0 | 300 | v9fs_invalidate_inode_attr(dir); |
53c06f4e | 301 | |
af7542fc AK |
302 | /* instantiate inode and assign the unopened fid to the dentry */ |
303 | fid = p9_client_walk(dfid, 1, &name, 1); | |
304 | if (IS_ERR(fid)) { | |
305 | err = PTR_ERR(fid); | |
5d385153 | 306 | p9_debug(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err); |
dafbe689 | 307 | goto out; |
53c06f4e | 308 | } |
ed80fcfa | 309 | inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb); |
af7542fc AK |
310 | if (IS_ERR(inode)) { |
311 | err = PTR_ERR(inode); | |
5d385153 | 312 | p9_debug(P9_DEBUG_VFS, "inode creation failed %d\n", err); |
dafbe689 | 313 | goto out; |
af7542fc | 314 | } |
3592ac44 AV |
315 | /* Now set the ACL based on the default value */ |
316 | v9fs_set_create_acl(inode, fid, dacl, pacl); | |
317 | ||
dafbe689 | 318 | v9fs_fid_add(dentry, &fid); |
5441ae5e | 319 | d_instantiate(dentry, inode); |
af7542fc | 320 | |
af7542fc | 321 | /* Since we are opening a file, assign the open fid to the file */ |
be12af3e | 322 | err = finish_open(file, dentry, generic_file_open); |
30d90494 | 323 | if (err) |
dafbe689 | 324 | goto out; |
30d90494 | 325 | file->private_data = ofid; |
344504e9 | 326 | #ifdef CONFIG_9P_FSCACHE |
4eb31178 | 327 | if (v9ses->cache & CACHE_FSCACHE) { |
1543b4c5 | 328 | struct v9fs_inode *v9inode = V9FS_I(inode); |
24e42e32 DH |
329 | fscache_use_cookie(v9fs_inode_cookie(v9inode), |
330 | file->f_mode & FMODE_WRITE); | |
1543b4c5 | 331 | } |
344504e9 | 332 | #endif |
1543b4c5 | 333 | v9fs_fid_add_modes(ofid, v9ses->flags, v9ses->cache, flags); |
dafbe689 | 334 | v9fs_open_fid_add(inode, &ofid); |
73a09dd9 | 335 | file->f_mode |= FMODE_CREATED; |
e43ae79c | 336 | out: |
dafbe689 DM |
337 | p9_fid_put(dfid); |
338 | p9_fid_put(ofid); | |
339 | p9_fid_put(fid); | |
5fa6300a | 340 | v9fs_put_acl(dacl, pacl); |
e43ae79c | 341 | dput(res); |
d9585277 | 342 | return err; |
53c06f4e AK |
343 | } |
344 | ||
345 | /** | |
346 | * v9fs_vfs_mkdir_dotl - VFS mkdir hook to create a directory | |
c54bd91e | 347 | * @idmap: The idmap of the mount |
53c06f4e AK |
348 | * @dir: inode that is being unlinked |
349 | * @dentry: dentry that is being unlinked | |
fd2916bd | 350 | * @omode: mode for new directory |
53c06f4e AK |
351 | * |
352 | */ | |
353 | ||
c54bd91e | 354 | static int v9fs_vfs_mkdir_dotl(struct mnt_idmap *idmap, |
549c7297 CB |
355 | struct inode *dir, struct dentry *dentry, |
356 | umode_t omode) | |
53c06f4e AK |
357 | { |
358 | int err; | |
359 | struct v9fs_session_info *v9ses; | |
360 | struct p9_fid *fid = NULL, *dfid = NULL; | |
d4ef4e35 | 361 | kgid_t gid; |
7880b43b | 362 | const unsigned char *name; |
d3fb6120 | 363 | umode_t mode; |
53c06f4e AK |
364 | struct inode *inode; |
365 | struct p9_qid qid; | |
53c06f4e AK |
366 | struct posix_acl *dacl = NULL, *pacl = NULL; |
367 | ||
4b8e9923 | 368 | p9_debug(P9_DEBUG_VFS, "name %pd\n", dentry); |
53c06f4e AK |
369 | v9ses = v9fs_inode2v9ses(dir); |
370 | ||
371 | omode |= S_IFDIR; | |
372 | if (dir->i_mode & S_ISGID) | |
373 | omode |= S_ISGID; | |
374 | ||
77d5a6b7 | 375 | dfid = v9fs_parent_fid(dentry); |
53c06f4e AK |
376 | if (IS_ERR(dfid)) { |
377 | err = PTR_ERR(dfid); | |
5d385153 | 378 | p9_debug(P9_DEBUG_VFS, "fid lookup failed %d\n", err); |
53c06f4e AK |
379 | goto error; |
380 | } | |
381 | ||
382 | gid = v9fs_get_fsgid_for_create(dir); | |
383 | mode = omode; | |
384 | /* Update mode based on ACL value */ | |
385 | err = v9fs_acl_mode(dir, &mode, &dacl, &pacl); | |
386 | if (err) { | |
5d385153 JP |
387 | p9_debug(P9_DEBUG_VFS, "Failed to get acl values in mkdir %d\n", |
388 | err); | |
53c06f4e AK |
389 | goto error; |
390 | } | |
7880b43b | 391 | name = dentry->d_name.name; |
53c06f4e AK |
392 | err = p9_client_mkdir_dotl(dfid, name, mode, gid, &qid); |
393 | if (err < 0) | |
394 | goto error; | |
3592ac44 AV |
395 | fid = p9_client_walk(dfid, 1, &name, 1); |
396 | if (IS_ERR(fid)) { | |
397 | err = PTR_ERR(fid); | |
398 | p9_debug(P9_DEBUG_VFS, "p9_client_walk failed %d\n", | |
399 | err); | |
3592ac44 AV |
400 | goto error; |
401 | } | |
402 | ||
53c06f4e | 403 | /* instantiate inode and assign the unopened fid to the dentry */ |
4eb31178 | 404 | if (v9ses->cache & (CACHE_META|CACHE_LOOSE)) { |
ed80fcfa | 405 | inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb); |
53c06f4e AK |
406 | if (IS_ERR(inode)) { |
407 | err = PTR_ERR(inode); | |
5d385153 JP |
408 | p9_debug(P9_DEBUG_VFS, "inode creation failed %d\n", |
409 | err); | |
53c06f4e AK |
410 | goto error; |
411 | } | |
dafbe689 | 412 | v9fs_fid_add(dentry, &fid); |
3592ac44 | 413 | v9fs_set_create_acl(inode, fid, dacl, pacl); |
5441ae5e | 414 | d_instantiate(dentry, inode); |
2ea03e1d | 415 | err = 0; |
53c06f4e AK |
416 | } else { |
417 | /* | |
418 | * Not in cached mode. No need to populate | |
419 | * inode with stat. We need to get an inode | |
420 | * so that we can set the acl with dentry | |
421 | */ | |
45089142 | 422 | inode = v9fs_get_inode(dir->i_sb, mode, 0); |
53c06f4e AK |
423 | if (IS_ERR(inode)) { |
424 | err = PTR_ERR(inode); | |
425 | goto error; | |
426 | } | |
3592ac44 | 427 | v9fs_set_create_acl(inode, fid, dacl, pacl); |
53c06f4e AK |
428 | d_instantiate(dentry, inode); |
429 | } | |
b271ec47 | 430 | inc_nlink(dir); |
d28c61f0 | 431 | v9fs_invalidate_inode_attr(dir); |
53c06f4e | 432 | error: |
dafbe689 | 433 | p9_fid_put(fid); |
5fa6300a | 434 | v9fs_put_acl(dacl, pacl); |
b48dbb99 | 435 | p9_fid_put(dfid); |
53c06f4e AK |
436 | return err; |
437 | } | |
438 | ||
439 | static int | |
b74d24f7 | 440 | v9fs_vfs_getattr_dotl(struct mnt_idmap *idmap, |
549c7297 CB |
441 | const struct path *path, struct kstat *stat, |
442 | u32 request_mask, unsigned int flags) | |
53c06f4e | 443 | { |
a528d35e | 444 | struct dentry *dentry = path->dentry; |
53c06f4e AK |
445 | struct v9fs_session_info *v9ses; |
446 | struct p9_fid *fid; | |
d9bc0d11 | 447 | struct inode *inode = d_inode(dentry); |
53c06f4e AK |
448 | struct p9_stat_dotl *st; |
449 | ||
5d385153 | 450 | p9_debug(P9_DEBUG_VFS, "dentry: %p\n", dentry); |
42869c8a | 451 | v9ses = v9fs_dentry2v9ses(dentry); |
4eb31178 | 452 | if (v9ses->cache & (CACHE_META|CACHE_LOOSE)) { |
0d72b928 | 453 | generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); |
a1211908 | 454 | return 0; |
1543b4c5 | 455 | } else if (v9ses->cache) { |
d9bc0d11 EVH |
456 | if (S_ISREG(inode->i_mode)) { |
457 | int retval = filemap_fdatawrite(inode->i_mapping); | |
458 | ||
459 | if (retval) | |
460 | p9_debug(P9_DEBUG_ERROR, | |
461 | "flushing writeback during getattr returned %d\n", retval); | |
462 | } | |
a1211908 | 463 | } |
53c06f4e AK |
464 | fid = v9fs_fid_lookup(dentry); |
465 | if (IS_ERR(fid)) | |
466 | return PTR_ERR(fid); | |
467 | ||
468 | /* Ask for all the fields in stat structure. Server will return | |
469 | * whatever it supports | |
470 | */ | |
471 | ||
472 | st = p9_client_getattr_dotl(fid, P9_STATS_ALL); | |
b48dbb99 | 473 | p9_fid_put(fid); |
53c06f4e AK |
474 | if (IS_ERR(st)) |
475 | return PTR_ERR(st); | |
476 | ||
5e3cc1ee | 477 | v9fs_stat2inode_dotl(st, d_inode(dentry), 0); |
0d72b928 | 478 | generic_fillattr(&nop_mnt_idmap, request_mask, d_inode(dentry), stat); |
53c06f4e AK |
479 | /* Change block size to what the server returned */ |
480 | stat->blksize = st->st_blksize; | |
481 | ||
482 | kfree(st); | |
483 | return 0; | |
484 | } | |
485 | ||
f766619d AK |
486 | /* |
487 | * Attribute flags. | |
488 | */ | |
489 | #define P9_ATTR_MODE (1 << 0) | |
490 | #define P9_ATTR_UID (1 << 1) | |
491 | #define P9_ATTR_GID (1 << 2) | |
492 | #define P9_ATTR_SIZE (1 << 3) | |
493 | #define P9_ATTR_ATIME (1 << 4) | |
494 | #define P9_ATTR_MTIME (1 << 5) | |
495 | #define P9_ATTR_CTIME (1 << 6) | |
496 | #define P9_ATTR_ATIME_SET (1 << 7) | |
497 | #define P9_ATTR_MTIME_SET (1 << 8) | |
498 | ||
499 | struct dotl_iattr_map { | |
500 | int iattr_valid; | |
501 | int p9_iattr_valid; | |
502 | }; | |
503 | ||
504 | static int v9fs_mapped_iattr_valid(int iattr_valid) | |
505 | { | |
506 | int i; | |
507 | int p9_iattr_valid = 0; | |
508 | struct dotl_iattr_map dotl_iattr_map[] = { | |
509 | { ATTR_MODE, P9_ATTR_MODE }, | |
510 | { ATTR_UID, P9_ATTR_UID }, | |
511 | { ATTR_GID, P9_ATTR_GID }, | |
512 | { ATTR_SIZE, P9_ATTR_SIZE }, | |
513 | { ATTR_ATIME, P9_ATTR_ATIME }, | |
514 | { ATTR_MTIME, P9_ATTR_MTIME }, | |
515 | { ATTR_CTIME, P9_ATTR_CTIME }, | |
516 | { ATTR_ATIME_SET, P9_ATTR_ATIME_SET }, | |
517 | { ATTR_MTIME_SET, P9_ATTR_MTIME_SET }, | |
518 | }; | |
519 | for (i = 0; i < ARRAY_SIZE(dotl_iattr_map); i++) { | |
520 | if (iattr_valid & dotl_iattr_map[i].iattr_valid) | |
521 | p9_iattr_valid |= dotl_iattr_map[i].p9_iattr_valid; | |
522 | } | |
523 | return p9_iattr_valid; | |
524 | } | |
525 | ||
53c06f4e AK |
526 | /** |
527 | * v9fs_vfs_setattr_dotl - set file metadata | |
c1632a0f | 528 | * @idmap: idmap of the mount |
53c06f4e AK |
529 | * @dentry: file whose metadata to set |
530 | * @iattr: metadata assignment structure | |
531 | * | |
532 | */ | |
533 | ||
c1632a0f | 534 | int v9fs_vfs_setattr_dotl(struct mnt_idmap *idmap, |
549c7297 | 535 | struct dentry *dentry, struct iattr *iattr) |
53c06f4e | 536 | { |
6636b6dc | 537 | int retval, use_dentry = 0; |
d9bc0d11 | 538 | struct inode *inode = d_inode(dentry); |
4eb31178 | 539 | struct v9fs_session_info __maybe_unused *v9ses; |
66246641 | 540 | struct p9_fid *fid = NULL; |
3cb6ee99 CB |
541 | struct p9_iattr_dotl p9attr = { |
542 | .uid = INVALID_UID, | |
543 | .gid = INVALID_GID, | |
544 | }; | |
53c06f4e | 545 | |
5d385153 | 546 | p9_debug(P9_DEBUG_VFS, "\n"); |
53c06f4e | 547 | |
c1632a0f | 548 | retval = setattr_prepare(&nop_mnt_idmap, dentry, iattr); |
53c06f4e AK |
549 | if (retval) |
550 | return retval; | |
551 | ||
d9bc0d11 EVH |
552 | v9ses = v9fs_dentry2v9ses(dentry); |
553 | ||
f766619d | 554 | p9attr.valid = v9fs_mapped_iattr_valid(iattr->ia_valid); |
3cb6ee99 CB |
555 | if (iattr->ia_valid & ATTR_MODE) |
556 | p9attr.mode = iattr->ia_mode; | |
557 | if (iattr->ia_valid & ATTR_UID) | |
558 | p9attr.uid = iattr->ia_uid; | |
559 | if (iattr->ia_valid & ATTR_GID) | |
560 | p9attr.gid = iattr->ia_gid; | |
561 | if (iattr->ia_valid & ATTR_SIZE) | |
562 | p9attr.size = iattr->ia_size; | |
563 | if (iattr->ia_valid & ATTR_ATIME_SET) { | |
564 | p9attr.atime_sec = iattr->ia_atime.tv_sec; | |
565 | p9attr.atime_nsec = iattr->ia_atime.tv_nsec; | |
566 | } | |
567 | if (iattr->ia_valid & ATTR_MTIME_SET) { | |
568 | p9attr.mtime_sec = iattr->ia_mtime.tv_sec; | |
569 | p9attr.mtime_nsec = iattr->ia_mtime.tv_nsec; | |
570 | } | |
53c06f4e | 571 | |
66246641 JW |
572 | if (iattr->ia_valid & ATTR_FILE) { |
573 | fid = iattr->ia_file->private_data; | |
574 | WARN_ON(!fid); | |
575 | } | |
6636b6dc | 576 | if (!fid) { |
66246641 | 577 | fid = v9fs_fid_lookup(dentry); |
6636b6dc JW |
578 | use_dentry = 1; |
579 | } | |
53c06f4e AK |
580 | if (IS_ERR(fid)) |
581 | return PTR_ERR(fid); | |
582 | ||
3dc5436a | 583 | /* Write all dirty data */ |
d9bc0d11 EVH |
584 | if (S_ISREG(inode->i_mode)) { |
585 | retval = filemap_fdatawrite(inode->i_mapping); | |
586 | if (retval < 0) | |
587 | p9_debug(P9_DEBUG_ERROR, | |
588 | "Flushing file prior to setattr failed: %d\n", retval); | |
589 | } | |
3dc5436a | 590 | |
f10fc50f | 591 | retval = p9_client_setattr(fid, &p9attr); |
6636b6dc JW |
592 | if (retval < 0) { |
593 | if (use_dentry) | |
b48dbb99 | 594 | p9_fid_put(fid); |
f10fc50f | 595 | return retval; |
6636b6dc | 596 | } |
53c06f4e | 597 | |
d9bc0d11 EVH |
598 | if ((iattr->ia_valid & ATTR_SIZE) && iattr->ia_size != |
599 | i_size_read(inode)) { | |
be308f07 | 600 | truncate_setsize(inode, iattr->ia_size); |
80105ed2 | 601 | netfs_resize_file(netfs_inode(inode), iattr->ia_size, true); |
1543b4c5 | 602 | |
4eb31178 EVH |
603 | #ifdef CONFIG_9P_FSCACHE |
604 | if (v9ses->cache & CACHE_FSCACHE) | |
605 | fscache_resize_cookie(v9fs_inode_cookie(V9FS_I(inode)), | |
606 | iattr->ia_size); | |
607 | #endif | |
d9bc0d11 | 608 | } |
059c138b | 609 | |
be308f07 | 610 | v9fs_invalidate_inode_attr(inode); |
c1632a0f | 611 | setattr_copy(&nop_mnt_idmap, inode, iattr); |
be308f07 | 612 | mark_inode_dirty(inode); |
53c06f4e AK |
613 | if (iattr->ia_valid & ATTR_MODE) { |
614 | /* We also want to update ACL when we update mode bits */ | |
be308f07 | 615 | retval = v9fs_acl_chmod(inode, fid); |
6636b6dc JW |
616 | if (retval < 0) { |
617 | if (use_dentry) | |
b48dbb99 | 618 | p9_fid_put(fid); |
53c06f4e | 619 | return retval; |
6636b6dc | 620 | } |
53c06f4e | 621 | } |
6636b6dc | 622 | if (use_dentry) |
b48dbb99 | 623 | p9_fid_put(fid); |
6636b6dc | 624 | |
53c06f4e AK |
625 | return 0; |
626 | } | |
627 | ||
628 | /** | |
629 | * v9fs_stat2inode_dotl - populate an inode structure with stat info | |
630 | * @stat: stat structure | |
631 | * @inode: inode to populate | |
5e3cc1ee | 632 | * @flags: ctrl flags (e.g. V9FS_STAT2INODE_KEEP_ISIZE) |
53c06f4e AK |
633 | * |
634 | */ | |
635 | ||
636 | void | |
5e3cc1ee HT |
637 | v9fs_stat2inode_dotl(struct p9_stat_dotl *stat, struct inode *inode, |
638 | unsigned int flags) | |
53c06f4e | 639 | { |
3eda0de6 | 640 | umode_t mode; |
b3cbea03 | 641 | struct v9fs_inode *v9inode = V9FS_I(inode); |
53c06f4e AK |
642 | |
643 | if ((stat->st_result_mask & P9_STATS_BASIC) == P9_STATS_BASIC) { | |
d0242a3a JL |
644 | inode_set_atime(inode, stat->st_atime_sec, |
645 | stat->st_atime_nsec); | |
646 | inode_set_mtime(inode, stat->st_mtime_sec, | |
647 | stat->st_mtime_nsec); | |
4f871800 JL |
648 | inode_set_ctime(inode, stat->st_ctime_sec, |
649 | stat->st_ctime_nsec); | |
53c06f4e AK |
650 | inode->i_uid = stat->st_uid; |
651 | inode->i_gid = stat->st_gid; | |
bfe86848 | 652 | set_nlink(inode, stat->st_nlink); |
53c06f4e | 653 | |
45089142 AK |
654 | mode = stat->st_mode & S_IALLUGO; |
655 | mode |= inode->i_mode & ~S_IALLUGO; | |
656 | inode->i_mode = mode; | |
53c06f4e | 657 | |
80105ed2 | 658 | v9inode->netfs.remote_i_size = stat->st_size; |
5e3cc1ee HT |
659 | if (!(flags & V9FS_STAT2INODE_KEEP_ISIZE)) |
660 | v9fs_i_size_write(inode, stat->st_size); | |
53c06f4e AK |
661 | inode->i_blocks = stat->st_blocks; |
662 | } else { | |
663 | if (stat->st_result_mask & P9_STATS_ATIME) { | |
d0242a3a JL |
664 | inode_set_atime(inode, stat->st_atime_sec, |
665 | stat->st_atime_nsec); | |
53c06f4e AK |
666 | } |
667 | if (stat->st_result_mask & P9_STATS_MTIME) { | |
d0242a3a JL |
668 | inode_set_mtime(inode, stat->st_mtime_sec, |
669 | stat->st_mtime_nsec); | |
53c06f4e AK |
670 | } |
671 | if (stat->st_result_mask & P9_STATS_CTIME) { | |
4f871800 JL |
672 | inode_set_ctime(inode, stat->st_ctime_sec, |
673 | stat->st_ctime_nsec); | |
53c06f4e AK |
674 | } |
675 | if (stat->st_result_mask & P9_STATS_UID) | |
676 | inode->i_uid = stat->st_uid; | |
677 | if (stat->st_result_mask & P9_STATS_GID) | |
678 | inode->i_gid = stat->st_gid; | |
679 | if (stat->st_result_mask & P9_STATS_NLINK) | |
bfe86848 | 680 | set_nlink(inode, stat->st_nlink); |
53c06f4e | 681 | if (stat->st_result_mask & P9_STATS_MODE) { |
b577d0cd AV |
682 | mode = stat->st_mode & S_IALLUGO; |
683 | mode |= inode->i_mode & ~S_IALLUGO; | |
684 | inode->i_mode = mode; | |
53c06f4e | 685 | } |
5e3cc1ee | 686 | if (!(flags & V9FS_STAT2INODE_KEEP_ISIZE) && |
80105ed2 DH |
687 | stat->st_result_mask & P9_STATS_SIZE) { |
688 | v9inode->netfs.remote_i_size = stat->st_size; | |
5e3cc1ee | 689 | v9fs_i_size_write(inode, stat->st_size); |
80105ed2 | 690 | } |
53c06f4e AK |
691 | if (stat->st_result_mask & P9_STATS_BLOCKS) |
692 | inode->i_blocks = stat->st_blocks; | |
693 | } | |
694 | if (stat->st_result_mask & P9_STATS_GEN) | |
fd2421f5 | 695 | inode->i_generation = stat->st_gen; |
53c06f4e AK |
696 | |
697 | /* Currently we don't support P9_STATS_BTIME and P9_STATS_DATA_VERSION | |
698 | * because the inode structure does not have fields for them. | |
699 | */ | |
b3cbea03 | 700 | v9inode->cache_validity &= ~V9FS_INO_INVALID_ATTR; |
53c06f4e AK |
701 | } |
702 | ||
703 | static int | |
7a77db95 | 704 | v9fs_vfs_symlink_dotl(struct mnt_idmap *idmap, struct inode *dir, |
549c7297 | 705 | struct dentry *dentry, const char *symname) |
53c06f4e | 706 | { |
53c06f4e | 707 | int err; |
d4ef4e35 | 708 | kgid_t gid; |
7880b43b | 709 | const unsigned char *name; |
d28c61f0 AK |
710 | struct p9_qid qid; |
711 | struct inode *inode; | |
712 | struct p9_fid *dfid; | |
713 | struct p9_fid *fid = NULL; | |
714 | struct v9fs_session_info *v9ses; | |
53c06f4e | 715 | |
7880b43b | 716 | name = dentry->d_name.name; |
5d385153 | 717 | p9_debug(P9_DEBUG_VFS, "%lu,%s,%s\n", dir->i_ino, name, symname); |
53c06f4e AK |
718 | v9ses = v9fs_inode2v9ses(dir); |
719 | ||
77d5a6b7 | 720 | dfid = v9fs_parent_fid(dentry); |
53c06f4e AK |
721 | if (IS_ERR(dfid)) { |
722 | err = PTR_ERR(dfid); | |
5d385153 | 723 | p9_debug(P9_DEBUG_VFS, "fid lookup failed %d\n", err); |
53c06f4e AK |
724 | return err; |
725 | } | |
726 | ||
727 | gid = v9fs_get_fsgid_for_create(dir); | |
728 | ||
729 | /* Server doesn't alter fid on TSYMLINK. Hence no need to clone it. */ | |
7880b43b | 730 | err = p9_client_symlink(dfid, name, symname, gid, &qid); |
53c06f4e AK |
731 | |
732 | if (err < 0) { | |
5d385153 | 733 | p9_debug(P9_DEBUG_VFS, "p9_client_symlink failed %d\n", err); |
53c06f4e AK |
734 | goto error; |
735 | } | |
736 | ||
d28c61f0 | 737 | v9fs_invalidate_inode_attr(dir); |
4eb31178 | 738 | if (v9ses->cache & (CACHE_META|CACHE_LOOSE)) { |
53c06f4e AK |
739 | /* Now walk from the parent so we can get an unopened fid. */ |
740 | fid = p9_client_walk(dfid, 1, &name, 1); | |
741 | if (IS_ERR(fid)) { | |
742 | err = PTR_ERR(fid); | |
5d385153 JP |
743 | p9_debug(P9_DEBUG_VFS, "p9_client_walk failed %d\n", |
744 | err); | |
53c06f4e AK |
745 | goto error; |
746 | } | |
747 | ||
748 | /* instantiate inode and assign the unopened fid to dentry */ | |
ed80fcfa | 749 | inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb); |
53c06f4e AK |
750 | if (IS_ERR(inode)) { |
751 | err = PTR_ERR(inode); | |
5d385153 JP |
752 | p9_debug(P9_DEBUG_VFS, "inode creation failed %d\n", |
753 | err); | |
53c06f4e AK |
754 | goto error; |
755 | } | |
dafbe689 | 756 | v9fs_fid_add(dentry, &fid); |
5441ae5e | 757 | d_instantiate(dentry, inode); |
2ea03e1d | 758 | err = 0; |
53c06f4e AK |
759 | } else { |
760 | /* Not in cached mode. No need to populate inode with stat */ | |
45089142 | 761 | inode = v9fs_get_inode(dir->i_sb, S_IFLNK, 0); |
53c06f4e AK |
762 | if (IS_ERR(inode)) { |
763 | err = PTR_ERR(inode); | |
764 | goto error; | |
765 | } | |
53c06f4e AK |
766 | d_instantiate(dentry, inode); |
767 | } | |
768 | ||
769 | error: | |
dafbe689 | 770 | p9_fid_put(fid); |
b48dbb99 | 771 | p9_fid_put(dfid); |
53c06f4e AK |
772 | return err; |
773 | } | |
774 | ||
775 | /** | |
776 | * v9fs_vfs_link_dotl - create a hardlink for dotl | |
777 | * @old_dentry: dentry for file to link to | |
778 | * @dir: inode destination for new link | |
779 | * @dentry: dentry for link | |
780 | * | |
781 | */ | |
782 | ||
783 | static int | |
784 | v9fs_vfs_link_dotl(struct dentry *old_dentry, struct inode *dir, | |
785 | struct dentry *dentry) | |
786 | { | |
787 | int err; | |
d28c61f0 AK |
788 | struct p9_fid *dfid, *oldfid; |
789 | struct v9fs_session_info *v9ses; | |
53c06f4e | 790 | |
4b8e9923 AV |
791 | p9_debug(P9_DEBUG_VFS, "dir ino: %lu, old_name: %pd, new_name: %pd\n", |
792 | dir->i_ino, old_dentry, dentry); | |
53c06f4e AK |
793 | |
794 | v9ses = v9fs_inode2v9ses(dir); | |
77d5a6b7 | 795 | dfid = v9fs_parent_fid(dentry); |
53c06f4e AK |
796 | if (IS_ERR(dfid)) |
797 | return PTR_ERR(dfid); | |
798 | ||
799 | oldfid = v9fs_fid_lookup(old_dentry); | |
6636b6dc | 800 | if (IS_ERR(oldfid)) { |
b48dbb99 | 801 | p9_fid_put(dfid); |
53c06f4e | 802 | return PTR_ERR(oldfid); |
6636b6dc | 803 | } |
53c06f4e | 804 | |
7880b43b | 805 | err = p9_client_link(dfid, oldfid, dentry->d_name.name); |
53c06f4e | 806 | |
b48dbb99 DM |
807 | p9_fid_put(dfid); |
808 | p9_fid_put(oldfid); | |
53c06f4e | 809 | if (err < 0) { |
5d385153 | 810 | p9_debug(P9_DEBUG_VFS, "p9_client_link failed %d\n", err); |
53c06f4e AK |
811 | return err; |
812 | } | |
813 | ||
d28c61f0 | 814 | v9fs_invalidate_inode_attr(dir); |
4eb31178 | 815 | if (v9ses->cache & (CACHE_META|CACHE_LOOSE)) { |
53c06f4e AK |
816 | /* Get the latest stat info from server. */ |
817 | struct p9_fid *fid; | |
6e195b0f | 818 | |
53c06f4e AK |
819 | fid = v9fs_fid_lookup(old_dentry); |
820 | if (IS_ERR(fid)) | |
821 | return PTR_ERR(fid); | |
822 | ||
2b0143b5 | 823 | v9fs_refresh_inode_dotl(fid, d_inode(old_dentry)); |
b48dbb99 | 824 | p9_fid_put(fid); |
53c06f4e | 825 | } |
2b0143b5 DH |
826 | ihold(d_inode(old_dentry)); |
827 | d_instantiate(dentry, d_inode(old_dentry)); | |
53c06f4e AK |
828 | |
829 | return err; | |
830 | } | |
831 | ||
832 | /** | |
833 | * v9fs_vfs_mknod_dotl - create a special file | |
5ebb29be | 834 | * @idmap: The idmap of the mount |
53c06f4e AK |
835 | * @dir: inode destination for new link |
836 | * @dentry: dentry for file | |
fd2916bd | 837 | * @omode: mode for creation |
53c06f4e AK |
838 | * @rdev: device associated with special file |
839 | * | |
840 | */ | |
841 | static int | |
5ebb29be | 842 | v9fs_vfs_mknod_dotl(struct mnt_idmap *idmap, struct inode *dir, |
549c7297 | 843 | struct dentry *dentry, umode_t omode, dev_t rdev) |
53c06f4e AK |
844 | { |
845 | int err; | |
d4ef4e35 | 846 | kgid_t gid; |
7880b43b | 847 | const unsigned char *name; |
d3fb6120 | 848 | umode_t mode; |
53c06f4e AK |
849 | struct v9fs_session_info *v9ses; |
850 | struct p9_fid *fid = NULL, *dfid = NULL; | |
851 | struct inode *inode; | |
53c06f4e | 852 | struct p9_qid qid; |
53c06f4e AK |
853 | struct posix_acl *dacl = NULL, *pacl = NULL; |
854 | ||
6e195b0f | 855 | p9_debug(P9_DEBUG_VFS, " %lu,%pd mode: %x MAJOR: %u MINOR: %u\n", |
a455589f | 856 | dir->i_ino, dentry, omode, |
5d385153 | 857 | MAJOR(rdev), MINOR(rdev)); |
53c06f4e | 858 | |
53c06f4e | 859 | v9ses = v9fs_inode2v9ses(dir); |
77d5a6b7 | 860 | dfid = v9fs_parent_fid(dentry); |
53c06f4e AK |
861 | if (IS_ERR(dfid)) { |
862 | err = PTR_ERR(dfid); | |
5d385153 | 863 | p9_debug(P9_DEBUG_VFS, "fid lookup failed %d\n", err); |
53c06f4e AK |
864 | goto error; |
865 | } | |
866 | ||
867 | gid = v9fs_get_fsgid_for_create(dir); | |
868 | mode = omode; | |
869 | /* Update mode based on ACL value */ | |
870 | err = v9fs_acl_mode(dir, &mode, &dacl, &pacl); | |
871 | if (err) { | |
5d385153 JP |
872 | p9_debug(P9_DEBUG_VFS, "Failed to get acl values in mknod %d\n", |
873 | err); | |
53c06f4e AK |
874 | goto error; |
875 | } | |
7880b43b | 876 | name = dentry->d_name.name; |
53c06f4e AK |
877 | |
878 | err = p9_client_mknod_dotl(dfid, name, mode, rdev, gid, &qid); | |
879 | if (err < 0) | |
880 | goto error; | |
881 | ||
d28c61f0 | 882 | v9fs_invalidate_inode_attr(dir); |
3592ac44 AV |
883 | fid = p9_client_walk(dfid, 1, &name, 1); |
884 | if (IS_ERR(fid)) { | |
885 | err = PTR_ERR(fid); | |
886 | p9_debug(P9_DEBUG_VFS, "p9_client_walk failed %d\n", | |
887 | err); | |
3592ac44 AV |
888 | goto error; |
889 | } | |
890 | ||
53c06f4e | 891 | /* instantiate inode and assign the unopened fid to the dentry */ |
4eb31178 | 892 | if (v9ses->cache & (CACHE_META|CACHE_LOOSE)) { |
ed80fcfa | 893 | inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb); |
53c06f4e AK |
894 | if (IS_ERR(inode)) { |
895 | err = PTR_ERR(inode); | |
5d385153 JP |
896 | p9_debug(P9_DEBUG_VFS, "inode creation failed %d\n", |
897 | err); | |
53c06f4e AK |
898 | goto error; |
899 | } | |
3592ac44 | 900 | v9fs_set_create_acl(inode, fid, dacl, pacl); |
dafbe689 | 901 | v9fs_fid_add(dentry, &fid); |
5441ae5e | 902 | d_instantiate(dentry, inode); |
2ea03e1d | 903 | err = 0; |
53c06f4e AK |
904 | } else { |
905 | /* | |
906 | * Not in cached mode. No need to populate inode with stat. | |
907 | * socket syscall returns a fd, so we need instantiate | |
908 | */ | |
45089142 | 909 | inode = v9fs_get_inode(dir->i_sb, mode, rdev); |
53c06f4e AK |
910 | if (IS_ERR(inode)) { |
911 | err = PTR_ERR(inode); | |
912 | goto error; | |
913 | } | |
3592ac44 | 914 | v9fs_set_create_acl(inode, fid, dacl, pacl); |
53c06f4e AK |
915 | d_instantiate(dentry, inode); |
916 | } | |
53c06f4e | 917 | error: |
dafbe689 | 918 | p9_fid_put(fid); |
5fa6300a | 919 | v9fs_put_acl(dacl, pacl); |
b48dbb99 | 920 | p9_fid_put(dfid); |
6636b6dc | 921 | |
53c06f4e AK |
922 | return err; |
923 | } | |
924 | ||
53c06f4e | 925 | /** |
6b255391 | 926 | * v9fs_vfs_get_link_dotl - follow a symlink path |
53c06f4e | 927 | * @dentry: dentry for symlink |
6b255391 | 928 | * @inode: inode for symlink |
fceef393 | 929 | * @done: destructor for return value |
53c06f4e AK |
930 | */ |
931 | ||
680baacb | 932 | static const char * |
6b255391 | 933 | v9fs_vfs_get_link_dotl(struct dentry *dentry, |
fceef393 AV |
934 | struct inode *inode, |
935 | struct delayed_call *done) | |
53c06f4e | 936 | { |
6b255391 | 937 | struct p9_fid *fid; |
31b6ceac | 938 | char *target; |
90e4fc88 | 939 | int retval; |
53c06f4e | 940 | |
6b255391 AV |
941 | if (!dentry) |
942 | return ERR_PTR(-ECHILD); | |
943 | ||
4b8e9923 | 944 | p9_debug(P9_DEBUG_VFS, "%pd\n", dentry); |
53c06f4e | 945 | |
6b255391 | 946 | fid = v9fs_fid_lookup(dentry); |
90e4fc88 AV |
947 | if (IS_ERR(fid)) |
948 | return ERR_CAST(fid); | |
31b6ceac | 949 | retval = p9_client_readlink(fid, &target); |
b48dbb99 | 950 | p9_fid_put(fid); |
90e4fc88 AV |
951 | if (retval) |
952 | return ERR_PTR(retval); | |
fceef393 AV |
953 | set_delayed_call(done, kfree_link, target); |
954 | return target; | |
53c06f4e AK |
955 | } |
956 | ||
b3cbea03 AK |
957 | int v9fs_refresh_inode_dotl(struct p9_fid *fid, struct inode *inode) |
958 | { | |
b3cbea03 AK |
959 | struct p9_stat_dotl *st; |
960 | struct v9fs_session_info *v9ses; | |
5e3cc1ee | 961 | unsigned int flags; |
b3cbea03 AK |
962 | |
963 | v9ses = v9fs_inode2v9ses(inode); | |
964 | st = p9_client_getattr_dotl(fid, P9_STATS_ALL); | |
965 | if (IS_ERR(st)) | |
966 | return PTR_ERR(st); | |
45089142 AK |
967 | /* |
968 | * Don't update inode if the file type is different | |
969 | */ | |
6e3e2c43 | 970 | if (inode_wrong_type(inode, st->st_mode)) |
45089142 | 971 | goto out; |
b3cbea03 | 972 | |
b3cbea03 AK |
973 | /* |
974 | * We don't want to refresh inode->i_size, | |
975 | * because we may have cached data | |
976 | */ | |
4eb31178 | 977 | flags = (v9ses->cache & CACHE_LOOSE) ? |
5e3cc1ee HT |
978 | V9FS_STAT2INODE_KEEP_ISIZE : 0; |
979 | v9fs_stat2inode_dotl(st, inode, flags); | |
45089142 | 980 | out: |
b3cbea03 AK |
981 | kfree(st); |
982 | return 0; | |
983 | } | |
984 | ||
53c06f4e AK |
985 | const struct inode_operations v9fs_dir_inode_operations_dotl = { |
986 | .create = v9fs_vfs_create_dotl, | |
e43ae79c | 987 | .atomic_open = v9fs_vfs_atomic_open_dotl, |
53c06f4e AK |
988 | .lookup = v9fs_vfs_lookup, |
989 | .link = v9fs_vfs_link_dotl, | |
990 | .symlink = v9fs_vfs_symlink_dotl, | |
991 | .unlink = v9fs_vfs_unlink, | |
992 | .mkdir = v9fs_vfs_mkdir_dotl, | |
993 | .rmdir = v9fs_vfs_rmdir, | |
994 | .mknod = v9fs_vfs_mknod_dotl, | |
995 | .rename = v9fs_vfs_rename, | |
996 | .getattr = v9fs_vfs_getattr_dotl, | |
997 | .setattr = v9fs_vfs_setattr_dotl, | |
53c06f4e | 998 | .listxattr = v9fs_listxattr, |
6cd4d4e8 CB |
999 | .get_inode_acl = v9fs_iop_get_inode_acl, |
1000 | .get_acl = v9fs_iop_get_acl, | |
079da629 | 1001 | .set_acl = v9fs_iop_set_acl, |
53c06f4e AK |
1002 | }; |
1003 | ||
1004 | const struct inode_operations v9fs_file_inode_operations_dotl = { | |
1005 | .getattr = v9fs_vfs_getattr_dotl, | |
1006 | .setattr = v9fs_vfs_setattr_dotl, | |
53c06f4e | 1007 | .listxattr = v9fs_listxattr, |
6cd4d4e8 CB |
1008 | .get_inode_acl = v9fs_iop_get_inode_acl, |
1009 | .get_acl = v9fs_iop_get_acl, | |
079da629 | 1010 | .set_acl = v9fs_iop_set_acl, |
53c06f4e AK |
1011 | }; |
1012 | ||
1013 | const struct inode_operations v9fs_symlink_inode_operations_dotl = { | |
6b255391 | 1014 | .get_link = v9fs_vfs_get_link_dotl, |
53c06f4e AK |
1015 | .getattr = v9fs_vfs_getattr_dotl, |
1016 | .setattr = v9fs_vfs_setattr_dotl, | |
53c06f4e AK |
1017 | .listxattr = v9fs_listxattr, |
1018 | }; |