Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/nfs/nfs4proc.c | |
3 | * | |
4 | * Client-side procedure declarations for NFSv4. | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
36 | */ | |
37 | ||
38 | #include <linux/mm.h> | |
39 | #include <linux/utsname.h> | |
40 | #include <linux/delay.h> | |
41 | #include <linux/errno.h> | |
42 | #include <linux/string.h> | |
43 | #include <linux/sunrpc/clnt.h> | |
44 | #include <linux/nfs.h> | |
45 | #include <linux/nfs4.h> | |
46 | #include <linux/nfs_fs.h> | |
47 | #include <linux/nfs_page.h> | |
48 | #include <linux/smp_lock.h> | |
49 | #include <linux/namei.h> | |
02a913a7 | 50 | #include <linux/mount.h> |
1da177e4 | 51 | |
4ce79717 | 52 | #include "nfs4_fs.h" |
1da177e4 | 53 | #include "delegation.h" |
101070ca | 54 | #include "internal.h" |
006ea73e | 55 | #include "iostat.h" |
1da177e4 LT |
56 | |
57 | #define NFSDBG_FACILITY NFSDBG_PROC | |
58 | ||
2066fe89 | 59 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
60 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
61 | ||
cdd4e68b | 62 | struct nfs4_opendata; |
864472e9 | 63 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
1da177e4 | 64 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
faf5f49c | 65 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *); |
9936781d TM |
66 | static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr); |
67 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr); | |
1da177e4 | 68 | |
1da177e4 LT |
69 | /* Prevent leaks of NFSv4 errors into userland */ |
70 | int nfs4_map_errors(int err) | |
71 | { | |
72 | if (err < -1000) { | |
73 | dprintk("%s could not handle NFSv4 error %d\n", | |
3110ff80 | 74 | __func__, -err); |
1da177e4 LT |
75 | return -EIO; |
76 | } | |
77 | return err; | |
78 | } | |
79 | ||
80 | /* | |
81 | * This is our standard bitmap for GETATTR requests. | |
82 | */ | |
83 | const u32 nfs4_fattr_bitmap[2] = { | |
84 | FATTR4_WORD0_TYPE | |
85 | | FATTR4_WORD0_CHANGE | |
86 | | FATTR4_WORD0_SIZE | |
87 | | FATTR4_WORD0_FSID | |
88 | | FATTR4_WORD0_FILEID, | |
89 | FATTR4_WORD1_MODE | |
90 | | FATTR4_WORD1_NUMLINKS | |
91 | | FATTR4_WORD1_OWNER | |
92 | | FATTR4_WORD1_OWNER_GROUP | |
93 | | FATTR4_WORD1_RAWDEV | |
94 | | FATTR4_WORD1_SPACE_USED | |
95 | | FATTR4_WORD1_TIME_ACCESS | |
96 | | FATTR4_WORD1_TIME_METADATA | |
97 | | FATTR4_WORD1_TIME_MODIFY | |
98 | }; | |
99 | ||
100 | const u32 nfs4_statfs_bitmap[2] = { | |
101 | FATTR4_WORD0_FILES_AVAIL | |
102 | | FATTR4_WORD0_FILES_FREE | |
103 | | FATTR4_WORD0_FILES_TOTAL, | |
104 | FATTR4_WORD1_SPACE_AVAIL | |
105 | | FATTR4_WORD1_SPACE_FREE | |
106 | | FATTR4_WORD1_SPACE_TOTAL | |
107 | }; | |
108 | ||
4ce79717 | 109 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
110 | FATTR4_WORD0_MAXLINK |
111 | | FATTR4_WORD0_MAXNAME, | |
112 | 0 | |
113 | }; | |
114 | ||
115 | const u32 nfs4_fsinfo_bitmap[2] = { FATTR4_WORD0_MAXFILESIZE | |
116 | | FATTR4_WORD0_MAXREAD | |
117 | | FATTR4_WORD0_MAXWRITE | |
118 | | FATTR4_WORD0_LEASE_TIME, | |
119 | 0 | |
120 | }; | |
121 | ||
830b8e33 MN |
122 | const u32 nfs4_fs_locations_bitmap[2] = { |
123 | FATTR4_WORD0_TYPE | |
124 | | FATTR4_WORD0_CHANGE | |
125 | | FATTR4_WORD0_SIZE | |
126 | | FATTR4_WORD0_FSID | |
127 | | FATTR4_WORD0_FILEID | |
128 | | FATTR4_WORD0_FS_LOCATIONS, | |
129 | FATTR4_WORD1_MODE | |
130 | | FATTR4_WORD1_NUMLINKS | |
131 | | FATTR4_WORD1_OWNER | |
132 | | FATTR4_WORD1_OWNER_GROUP | |
133 | | FATTR4_WORD1_RAWDEV | |
134 | | FATTR4_WORD1_SPACE_USED | |
135 | | FATTR4_WORD1_TIME_ACCESS | |
136 | | FATTR4_WORD1_TIME_METADATA | |
137 | | FATTR4_WORD1_TIME_MODIFY | |
138 | | FATTR4_WORD1_MOUNTED_ON_FILEID | |
139 | }; | |
140 | ||
bc4785cd | 141 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
142 | struct nfs4_readdir_arg *readdir) |
143 | { | |
0dbb4c67 | 144 | __be32 *start, *p; |
1da177e4 LT |
145 | |
146 | BUG_ON(readdir->count < 80); | |
147 | if (cookie > 2) { | |
b7ef1956 | 148 | readdir->cookie = cookie; |
1da177e4 LT |
149 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
150 | return; | |
151 | } | |
152 | ||
153 | readdir->cookie = 0; | |
154 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
155 | if (cookie == 2) | |
156 | return; | |
157 | ||
158 | /* | |
159 | * NFSv4 servers do not return entries for '.' and '..' | |
160 | * Therefore, we fake these entries here. We let '.' | |
161 | * have cookie 0 and '..' have cookie 1. Note that | |
162 | * when talking to the server, we always send cookie 0 | |
163 | * instead of 1 or 2. | |
164 | */ | |
0dbb4c67 | 165 | start = p = kmap_atomic(*readdir->pages, KM_USER0); |
1da177e4 LT |
166 | |
167 | if (cookie == 0) { | |
168 | *p++ = xdr_one; /* next */ | |
169 | *p++ = xdr_zero; /* cookie, first word */ | |
170 | *p++ = xdr_one; /* cookie, second word */ | |
171 | *p++ = xdr_one; /* entry len */ | |
172 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
173 | p++; | |
174 | *p++ = xdr_one; /* bitmap length */ | |
175 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
176 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 177 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
178 | } |
179 | ||
180 | *p++ = xdr_one; /* next */ | |
181 | *p++ = xdr_zero; /* cookie, first word */ | |
182 | *p++ = xdr_two; /* cookie, second word */ | |
183 | *p++ = xdr_two; /* entry len */ | |
184 | memcpy(p, "..\0\0", 4); /* entry */ | |
185 | p++; | |
186 | *p++ = xdr_one; /* bitmap length */ | |
187 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
188 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 189 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
190 | |
191 | readdir->pgbase = (char *)p - (char *)start; | |
192 | readdir->count -= readdir->pgbase; | |
193 | kunmap_atomic(start, KM_USER0); | |
194 | } | |
195 | ||
65de872e TM |
196 | static int nfs4_wait_bit_killable(void *word) |
197 | { | |
198 | if (fatal_signal_pending(current)) | |
199 | return -ERESTARTSYS; | |
200 | schedule(); | |
201 | return 0; | |
202 | } | |
203 | ||
204 | static int nfs4_wait_clnt_recover(struct nfs_client *clp) | |
205 | { | |
206 | int res; | |
207 | ||
208 | might_sleep(); | |
209 | ||
210 | rwsem_acquire(&clp->cl_sem.dep_map, 0, 0, _RET_IP_); | |
211 | ||
212 | res = wait_on_bit(&clp->cl_state, NFS4CLNT_STATE_RECOVER, | |
213 | nfs4_wait_bit_killable, TASK_KILLABLE); | |
214 | ||
215 | rwsem_release(&clp->cl_sem.dep_map, 1, _RET_IP_); | |
216 | return res; | |
217 | } | |
218 | ||
219 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) | |
220 | { | |
221 | int res = 0; | |
222 | ||
223 | might_sleep(); | |
224 | ||
225 | if (*timeout <= 0) | |
226 | *timeout = NFS4_POLL_RETRY_MIN; | |
227 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
228 | *timeout = NFS4_POLL_RETRY_MAX; | |
229 | schedule_timeout_killable(*timeout); | |
230 | if (fatal_signal_pending(current)) | |
231 | res = -ERESTARTSYS; | |
232 | *timeout <<= 1; | |
233 | return res; | |
234 | } | |
235 | ||
236 | /* This is the error handling routine for processes that are allowed | |
237 | * to sleep. | |
238 | */ | |
239 | static int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct nfs4_exception *exception) | |
240 | { | |
241 | struct nfs_client *clp = server->nfs_client; | |
242 | int ret = errorcode; | |
243 | ||
244 | exception->retry = 0; | |
245 | switch(errorcode) { | |
246 | case 0: | |
247 | return 0; | |
248 | case -NFS4ERR_STALE_CLIENTID: | |
249 | case -NFS4ERR_STALE_STATEID: | |
250 | case -NFS4ERR_EXPIRED: | |
251 | nfs4_schedule_state_recovery(clp); | |
252 | ret = nfs4_wait_clnt_recover(clp); | |
253 | if (ret == 0) | |
254 | exception->retry = 1; | |
255 | break; | |
256 | case -NFS4ERR_FILE_OPEN: | |
257 | case -NFS4ERR_GRACE: | |
258 | case -NFS4ERR_DELAY: | |
259 | ret = nfs4_delay(server->client, &exception->timeout); | |
260 | if (ret != 0) | |
261 | break; | |
262 | case -NFS4ERR_OLD_STATEID: | |
263 | exception->retry = 1; | |
264 | } | |
265 | /* We failed to handle the error */ | |
266 | return nfs4_map_errors(ret); | |
267 | } | |
268 | ||
269 | ||
26e976a8 | 270 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
1da177e4 | 271 | { |
7539bbab | 272 | struct nfs_client *clp = server->nfs_client; |
1da177e4 LT |
273 | spin_lock(&clp->cl_lock); |
274 | if (time_before(clp->cl_last_renewal,timestamp)) | |
275 | clp->cl_last_renewal = timestamp; | |
276 | spin_unlock(&clp->cl_lock); | |
277 | } | |
278 | ||
38478b24 | 279 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 280 | { |
38478b24 | 281 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 282 | |
38478b24 | 283 | spin_lock(&dir->i_lock); |
40d24704 TM |
284 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; |
285 | if (!cinfo->atomic || cinfo->before != nfsi->change_attr) | |
bfc69a45 | 286 | nfs_force_lookup_revalidate(dir); |
40d24704 | 287 | nfsi->change_attr = cinfo->after; |
38478b24 | 288 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
289 | } |
290 | ||
e56e0b78 | 291 | struct nfs4_opendata { |
c6d00e63 | 292 | struct kref kref; |
e56e0b78 TM |
293 | struct nfs_openargs o_arg; |
294 | struct nfs_openres o_res; | |
cdd4e68b TM |
295 | struct nfs_open_confirmargs c_arg; |
296 | struct nfs_open_confirmres c_res; | |
e56e0b78 TM |
297 | struct nfs_fattr f_attr; |
298 | struct nfs_fattr dir_attr; | |
ad389da7 | 299 | struct path path; |
e56e0b78 TM |
300 | struct dentry *dir; |
301 | struct nfs4_state_owner *owner; | |
aac00a8d | 302 | struct nfs4_state *state; |
e56e0b78 | 303 | struct iattr attrs; |
26e976a8 | 304 | unsigned long timestamp; |
3e309914 | 305 | unsigned int rpc_done : 1; |
24ac23ab TM |
306 | int rpc_status; |
307 | int cancelled; | |
e56e0b78 TM |
308 | }; |
309 | ||
2ced46c2 TM |
310 | |
311 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
312 | { | |
313 | p->o_res.f_attr = &p->f_attr; | |
314 | p->o_res.dir_attr = &p->dir_attr; | |
c1d51931 TM |
315 | p->o_res.seqid = p->o_arg.seqid; |
316 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 TM |
317 | p->o_res.server = p->o_arg.server; |
318 | nfs_fattr_init(&p->f_attr); | |
319 | nfs_fattr_init(&p->dir_attr); | |
320 | } | |
321 | ||
ad389da7 | 322 | static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path, |
e56e0b78 TM |
323 | struct nfs4_state_owner *sp, int flags, |
324 | const struct iattr *attrs) | |
325 | { | |
ad389da7 | 326 | struct dentry *parent = dget_parent(path->dentry); |
e56e0b78 TM |
327 | struct inode *dir = parent->d_inode; |
328 | struct nfs_server *server = NFS_SERVER(dir); | |
329 | struct nfs4_opendata *p; | |
330 | ||
331 | p = kzalloc(sizeof(*p), GFP_KERNEL); | |
332 | if (p == NULL) | |
333 | goto err; | |
334 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid); | |
335 | if (p->o_arg.seqid == NULL) | |
336 | goto err_free; | |
ad389da7 TM |
337 | p->path.mnt = mntget(path->mnt); |
338 | p->path.dentry = dget(path->dentry); | |
e56e0b78 TM |
339 | p->dir = parent; |
340 | p->owner = sp; | |
341 | atomic_inc(&sp->so_count); | |
342 | p->o_arg.fh = NFS_FH(dir); | |
343 | p->o_arg.open_flags = flags, | |
7539bbab | 344 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 345 | p->o_arg.id = sp->so_owner_id.id; |
ad389da7 | 346 | p->o_arg.name = &p->path.dentry->d_name; |
e56e0b78 TM |
347 | p->o_arg.server = server; |
348 | p->o_arg.bitmask = server->attr_bitmask; | |
349 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; | |
e56e0b78 TM |
350 | if (flags & O_EXCL) { |
351 | u32 *s = (u32 *) p->o_arg.u.verifier.data; | |
352 | s[0] = jiffies; | |
353 | s[1] = current->pid; | |
354 | } else if (flags & O_CREAT) { | |
355 | p->o_arg.u.attrs = &p->attrs; | |
356 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
357 | } | |
cdd4e68b TM |
358 | p->c_arg.fh = &p->o_res.fh; |
359 | p->c_arg.stateid = &p->o_res.stateid; | |
360 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 361 | nfs4_init_opendata_res(p); |
c6d00e63 | 362 | kref_init(&p->kref); |
e56e0b78 TM |
363 | return p; |
364 | err_free: | |
365 | kfree(p); | |
366 | err: | |
367 | dput(parent); | |
368 | return NULL; | |
369 | } | |
370 | ||
c6d00e63 | 371 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 372 | { |
c6d00e63 TM |
373 | struct nfs4_opendata *p = container_of(kref, |
374 | struct nfs4_opendata, kref); | |
375 | ||
376 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
377 | if (p->state != NULL) |
378 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
379 | nfs4_put_state_owner(p->owner); |
380 | dput(p->dir); | |
31f31db1 | 381 | path_put(&p->path); |
c6d00e63 TM |
382 | kfree(p); |
383 | } | |
384 | ||
385 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
386 | { | |
387 | if (p != NULL) | |
388 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
389 | } |
390 | ||
06f814a3 TM |
391 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
392 | { | |
06f814a3 TM |
393 | int ret; |
394 | ||
06f814a3 | 395 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
396 | return ret; |
397 | } | |
398 | ||
6ee41268 TM |
399 | static int can_open_cached(struct nfs4_state *state, int mode) |
400 | { | |
401 | int ret = 0; | |
402 | switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) { | |
403 | case FMODE_READ: | |
404 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0; | |
6ee41268 TM |
405 | break; |
406 | case FMODE_WRITE: | |
407 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0; | |
6ee41268 TM |
408 | break; |
409 | case FMODE_READ|FMODE_WRITE: | |
410 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0; | |
411 | } | |
412 | return ret; | |
413 | } | |
414 | ||
aac00a8d TM |
415 | static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags) |
416 | { | |
417 | if ((delegation->type & open_flags) != open_flags) | |
418 | return 0; | |
15c831bf | 419 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d TM |
420 | return 0; |
421 | return 1; | |
422 | } | |
423 | ||
003707c7 | 424 | static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags) |
e7616923 TM |
425 | { |
426 | switch (open_flags) { | |
427 | case FMODE_WRITE: | |
428 | state->n_wronly++; | |
429 | break; | |
430 | case FMODE_READ: | |
431 | state->n_rdonly++; | |
432 | break; | |
433 | case FMODE_READ|FMODE_WRITE: | |
434 | state->n_rdwr++; | |
435 | } | |
003707c7 TM |
436 | nfs4_state_set_mode_locked(state, state->state | open_flags); |
437 | } | |
438 | ||
439 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags) | |
440 | { | |
441 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
442 | memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data)); | |
443 | memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data)); | |
444 | switch (open_flags) { | |
445 | case FMODE_READ: | |
446 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
447 | break; | |
448 | case FMODE_WRITE: | |
449 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
450 | break; | |
451 | case FMODE_READ|FMODE_WRITE: | |
452 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
453 | } | |
e7616923 TM |
454 | } |
455 | ||
003707c7 TM |
456 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags) |
457 | { | |
8bda4e4c | 458 | write_seqlock(&state->seqlock); |
003707c7 | 459 | nfs_set_open_stateid_locked(state, stateid, open_flags); |
8bda4e4c | 460 | write_sequnlock(&state->seqlock); |
003707c7 TM |
461 | } |
462 | ||
34310430 | 463 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags) |
1da177e4 | 464 | { |
8bda4e4c TM |
465 | /* |
466 | * Protect the call to nfs4_state_set_mode_locked and | |
467 | * serialise the stateid update | |
468 | */ | |
469 | write_seqlock(&state->seqlock); | |
003707c7 TM |
470 | if (deleg_stateid != NULL) { |
471 | memcpy(state->stateid.data, deleg_stateid->data, sizeof(state->stateid.data)); | |
472 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
473 | } | |
474 | if (open_stateid != NULL) | |
475 | nfs_set_open_stateid_locked(state, open_stateid, open_flags); | |
8bda4e4c TM |
476 | write_sequnlock(&state->seqlock); |
477 | spin_lock(&state->owner->so_lock); | |
e7616923 | 478 | update_open_stateflags(state, open_flags); |
ec073428 | 479 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
480 | } |
481 | ||
34310430 TM |
482 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags) |
483 | { | |
484 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
485 | struct nfs_delegation *deleg_cur; | |
486 | int ret = 0; | |
487 | ||
488 | open_flags &= (FMODE_READ|FMODE_WRITE); | |
489 | ||
490 | rcu_read_lock(); | |
491 | deleg_cur = rcu_dereference(nfsi->delegation); | |
492 | if (deleg_cur == NULL) | |
493 | goto no_delegation; | |
494 | ||
495 | spin_lock(&deleg_cur->lock); | |
496 | if (nfsi->delegation != deleg_cur || | |
497 | (deleg_cur->type & open_flags) != open_flags) | |
498 | goto no_delegation_unlock; | |
499 | ||
500 | if (delegation == NULL) | |
501 | delegation = &deleg_cur->stateid; | |
502 | else if (memcmp(deleg_cur->stateid.data, delegation->data, NFS4_STATEID_SIZE) != 0) | |
503 | goto no_delegation_unlock; | |
504 | ||
505 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags); | |
506 | ret = 1; | |
507 | no_delegation_unlock: | |
508 | spin_unlock(&deleg_cur->lock); | |
509 | no_delegation: | |
510 | rcu_read_unlock(); | |
511 | ||
512 | if (!ret && open_stateid != NULL) { | |
513 | __update_open_stateid(state, open_stateid, NULL, open_flags); | |
514 | ret = 1; | |
515 | } | |
516 | ||
517 | return ret; | |
518 | } | |
519 | ||
520 | ||
aac00a8d TM |
521 | static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags) |
522 | { | |
523 | struct nfs_delegation *delegation; | |
524 | ||
525 | rcu_read_lock(); | |
526 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
527 | if (delegation == NULL || (delegation->type & open_flags) == open_flags) { | |
528 | rcu_read_unlock(); | |
529 | return; | |
530 | } | |
531 | rcu_read_unlock(); | |
532 | nfs_inode_return_delegation(inode); | |
533 | } | |
534 | ||
6ee41268 | 535 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
536 | { |
537 | struct nfs4_state *state = opendata->state; | |
538 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
539 | struct nfs_delegation *delegation; | |
540 | int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL); | |
541 | nfs4_stateid stateid; | |
542 | int ret = -EAGAIN; | |
543 | ||
aac00a8d | 544 | for (;;) { |
6ee41268 TM |
545 | if (can_open_cached(state, open_mode)) { |
546 | spin_lock(&state->owner->so_lock); | |
547 | if (can_open_cached(state, open_mode)) { | |
548 | update_open_stateflags(state, open_mode); | |
549 | spin_unlock(&state->owner->so_lock); | |
6ee41268 TM |
550 | goto out_return_state; |
551 | } | |
552 | spin_unlock(&state->owner->so_lock); | |
553 | } | |
34310430 TM |
554 | rcu_read_lock(); |
555 | delegation = rcu_dereference(nfsi->delegation); | |
556 | if (delegation == NULL || | |
557 | !can_open_delegated(delegation, open_mode)) { | |
558 | rcu_read_unlock(); | |
aac00a8d | 559 | break; |
34310430 | 560 | } |
aac00a8d TM |
561 | /* Save the delegation */ |
562 | memcpy(stateid.data, delegation->stateid.data, sizeof(stateid.data)); | |
563 | rcu_read_unlock(); | |
af22f94a | 564 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
565 | if (ret != 0) |
566 | goto out; | |
567 | ret = -EAGAIN; | |
34310430 TM |
568 | |
569 | /* Try to update the stateid using the delegation */ | |
570 | if (update_open_stateid(state, NULL, &stateid, open_mode)) | |
571 | goto out_return_state; | |
aac00a8d | 572 | } |
aac00a8d TM |
573 | out: |
574 | return ERR_PTR(ret); | |
575 | out_return_state: | |
576 | atomic_inc(&state->count); | |
577 | return state; | |
578 | } | |
579 | ||
24ac23ab TM |
580 | static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) |
581 | { | |
582 | struct inode *inode; | |
583 | struct nfs4_state *state = NULL; | |
003707c7 | 584 | struct nfs_delegation *delegation; |
1b370bc2 | 585 | int ret; |
24ac23ab | 586 | |
aac00a8d | 587 | if (!data->rpc_done) { |
6ee41268 | 588 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
589 | goto out; |
590 | } | |
591 | ||
1b370bc2 | 592 | ret = -EAGAIN; |
24ac23ab | 593 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 594 | goto err; |
24ac23ab | 595 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 596 | ret = PTR_ERR(inode); |
03f28e3a | 597 | if (IS_ERR(inode)) |
1b370bc2 TM |
598 | goto err; |
599 | ret = -ENOMEM; | |
24ac23ab TM |
600 | state = nfs4_get_open_state(inode, data->owner); |
601 | if (state == NULL) | |
1b370bc2 | 602 | goto err_put_inode; |
549d6ed5 | 603 | if (data->o_res.delegation_type != 0) { |
549d6ed5 TM |
604 | int delegation_flags = 0; |
605 | ||
003707c7 TM |
606 | rcu_read_lock(); |
607 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
608 | if (delegation) | |
609 | delegation_flags = delegation->flags; | |
610 | rcu_read_unlock(); | |
15c831bf | 611 | if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) |
549d6ed5 TM |
612 | nfs_inode_set_delegation(state->inode, |
613 | data->owner->so_cred, | |
614 | &data->o_res); | |
615 | else | |
616 | nfs_inode_reclaim_delegation(state->inode, | |
617 | data->owner->so_cred, | |
618 | &data->o_res); | |
619 | } | |
34310430 TM |
620 | |
621 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
622 | data->o_arg.open_flags); | |
24ac23ab | 623 | iput(inode); |
aac00a8d | 624 | out: |
24ac23ab | 625 | return state; |
1b370bc2 TM |
626 | err_put_inode: |
627 | iput(inode); | |
628 | err: | |
629 | return ERR_PTR(ret); | |
24ac23ab TM |
630 | } |
631 | ||
864472e9 TM |
632 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
633 | { | |
634 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
635 | struct nfs_open_context *ctx; | |
636 | ||
637 | spin_lock(&state->inode->i_lock); | |
638 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
639 | if (ctx->state != state) | |
640 | continue; | |
641 | get_nfs_open_context(ctx); | |
642 | spin_unlock(&state->inode->i_lock); | |
643 | return ctx; | |
644 | } | |
645 | spin_unlock(&state->inode->i_lock); | |
646 | return ERR_PTR(-ENOENT); | |
647 | } | |
648 | ||
6f220ed5 TM |
649 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
650 | { | |
651 | struct nfs4_opendata *opendata; | |
652 | ||
653 | opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL); | |
654 | if (opendata == NULL) | |
655 | return ERR_PTR(-ENOMEM); | |
656 | opendata->state = state; | |
657 | atomic_inc(&state->count); | |
658 | return opendata; | |
659 | } | |
660 | ||
2ced46c2 | 661 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res) |
864472e9 | 662 | { |
2ced46c2 | 663 | struct nfs4_state *newstate; |
864472e9 TM |
664 | int ret; |
665 | ||
666 | opendata->o_arg.open_flags = openflags; | |
2ced46c2 TM |
667 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
668 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
669 | nfs4_init_opendata_res(opendata); | |
864472e9 TM |
670 | ret = _nfs4_proc_open(opendata); |
671 | if (ret != 0) | |
672 | return ret; | |
2ced46c2 | 673 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
674 | if (IS_ERR(newstate)) |
675 | return PTR_ERR(newstate); | |
676 | nfs4_close_state(&opendata->path, newstate, openflags); | |
2ced46c2 | 677 | *res = newstate; |
864472e9 TM |
678 | return 0; |
679 | } | |
680 | ||
681 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
682 | { | |
864472e9 | 683 | struct nfs4_state *newstate; |
864472e9 TM |
684 | int ret; |
685 | ||
686 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 687 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
688 | smp_rmb(); |
689 | if (state->n_rdwr != 0) { | |
2ced46c2 | 690 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
691 | if (ret != 0) |
692 | return ret; | |
2ced46c2 TM |
693 | if (newstate != state) |
694 | return -ESTALE; | |
864472e9 TM |
695 | } |
696 | if (state->n_wronly != 0) { | |
2ced46c2 | 697 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
698 | if (ret != 0) |
699 | return ret; | |
2ced46c2 TM |
700 | if (newstate != state) |
701 | return -ESTALE; | |
864472e9 TM |
702 | } |
703 | if (state->n_rdonly != 0) { | |
2ced46c2 | 704 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
705 | if (ret != 0) |
706 | return ret; | |
2ced46c2 TM |
707 | if (newstate != state) |
708 | return -ESTALE; | |
864472e9 | 709 | } |
1ac7e2fd TM |
710 | /* |
711 | * We may have performed cached opens for all three recoveries. | |
712 | * Check if we need to update the current stateid. | |
713 | */ | |
714 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
715 | memcmp(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)) != 0) { | |
8bda4e4c | 716 | write_seqlock(&state->seqlock); |
1ac7e2fd TM |
717 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
718 | memcpy(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)); | |
8bda4e4c | 719 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 720 | } |
864472e9 TM |
721 | return 0; |
722 | } | |
723 | ||
1da177e4 LT |
724 | /* |
725 | * OPEN_RECLAIM: | |
726 | * reclaim state on the server after a reboot. | |
1da177e4 | 727 | */ |
539cd03a | 728 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 729 | { |
1ac7e2fd | 730 | struct nfs_delegation *delegation; |
864472e9 TM |
731 | struct nfs4_opendata *opendata; |
732 | int delegation_type = 0; | |
1da177e4 LT |
733 | int status; |
734 | ||
6f220ed5 TM |
735 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
736 | if (IS_ERR(opendata)) | |
737 | return PTR_ERR(opendata); | |
864472e9 TM |
738 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
739 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
740 | rcu_read_lock(); |
741 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 742 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 743 | delegation_type = delegation->type; |
1ac7e2fd | 744 | rcu_read_unlock(); |
864472e9 TM |
745 | opendata->o_arg.u.delegation_type = delegation_type; |
746 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 747 | nfs4_opendata_put(opendata); |
1da177e4 LT |
748 | return status; |
749 | } | |
750 | ||
539cd03a | 751 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
752 | { |
753 | struct nfs_server *server = NFS_SERVER(state->inode); | |
754 | struct nfs4_exception exception = { }; | |
755 | int err; | |
756 | do { | |
539cd03a | 757 | err = _nfs4_do_open_reclaim(ctx, state); |
202b50dc TM |
758 | if (err != -NFS4ERR_DELAY) |
759 | break; | |
760 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
761 | } while (exception.retry); |
762 | return err; | |
763 | } | |
764 | ||
864472e9 TM |
765 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
766 | { | |
767 | struct nfs_open_context *ctx; | |
768 | int ret; | |
769 | ||
770 | ctx = nfs4_state_find_open_context(state); | |
771 | if (IS_ERR(ctx)) | |
772 | return PTR_ERR(ctx); | |
539cd03a | 773 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
774 | put_nfs_open_context(ctx); |
775 | return ret; | |
776 | } | |
777 | ||
13437e12 | 778 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 779 | { |
e56e0b78 | 780 | struct nfs4_opendata *opendata; |
864472e9 | 781 | int ret; |
1da177e4 | 782 | |
6f220ed5 TM |
783 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
784 | if (IS_ERR(opendata)) | |
785 | return PTR_ERR(opendata); | |
e56e0b78 | 786 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
13437e12 | 787 | memcpy(opendata->o_arg.u.delegation.data, stateid->data, |
e56e0b78 | 788 | sizeof(opendata->o_arg.u.delegation.data)); |
864472e9 | 789 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 790 | nfs4_opendata_put(opendata); |
864472e9 | 791 | return ret; |
1da177e4 LT |
792 | } |
793 | ||
13437e12 | 794 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
795 | { |
796 | struct nfs4_exception exception = { }; | |
539cd03a | 797 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
798 | int err; |
799 | do { | |
13437e12 | 800 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
801 | switch (err) { |
802 | case 0: | |
803 | return err; | |
804 | case -NFS4ERR_STALE_CLIENTID: | |
805 | case -NFS4ERR_STALE_STATEID: | |
806 | case -NFS4ERR_EXPIRED: | |
807 | /* Don't recall a delegation if it was lost */ | |
7539bbab | 808 | nfs4_schedule_state_recovery(server->nfs_client); |
1da177e4 LT |
809 | return err; |
810 | } | |
811 | err = nfs4_handle_exception(server, err, &exception); | |
812 | } while (exception.retry); | |
813 | return err; | |
814 | } | |
815 | ||
cdd4e68b TM |
816 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
817 | { | |
818 | struct nfs4_opendata *data = calldata; | |
819 | ||
820 | data->rpc_status = task->tk_status; | |
821 | if (RPC_ASSASSINATED(task)) | |
822 | return; | |
26e976a8 | 823 | if (data->rpc_status == 0) { |
cdd4e68b TM |
824 | memcpy(data->o_res.stateid.data, data->c_res.stateid.data, |
825 | sizeof(data->o_res.stateid.data)); | |
bb22629e | 826 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 827 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 828 | data->rpc_done = 1; |
26e976a8 | 829 | } |
cdd4e68b TM |
830 | } |
831 | ||
832 | static void nfs4_open_confirm_release(void *calldata) | |
833 | { | |
834 | struct nfs4_opendata *data = calldata; | |
835 | struct nfs4_state *state = NULL; | |
836 | ||
837 | /* If this request hasn't been cancelled, do nothing */ | |
838 | if (data->cancelled == 0) | |
839 | goto out_free; | |
840 | /* In case of error, no cleanup! */ | |
3e309914 | 841 | if (!data->rpc_done) |
cdd4e68b | 842 | goto out_free; |
cdd4e68b | 843 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 844 | if (!IS_ERR(state)) |
4a35bd41 | 845 | nfs4_close_state(&data->path, state, data->o_arg.open_flags); |
cdd4e68b | 846 | out_free: |
c6d00e63 | 847 | nfs4_opendata_put(data); |
cdd4e68b TM |
848 | } |
849 | ||
850 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
851 | .rpc_call_done = nfs4_open_confirm_done, |
852 | .rpc_release = nfs4_open_confirm_release, | |
853 | }; | |
854 | ||
855 | /* | |
856 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
857 | */ | |
858 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
859 | { | |
860 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
861 | struct rpc_task *task; | |
5138fde0 TM |
862 | struct rpc_message msg = { |
863 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
864 | .rpc_argp = &data->c_arg, | |
865 | .rpc_resp = &data->c_res, | |
866 | .rpc_cred = data->owner->so_cred, | |
867 | }; | |
c970aa85 TM |
868 | struct rpc_task_setup task_setup_data = { |
869 | .rpc_client = server->client, | |
5138fde0 | 870 | .rpc_message = &msg, |
c970aa85 TM |
871 | .callback_ops = &nfs4_open_confirm_ops, |
872 | .callback_data = data, | |
101070ca | 873 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
874 | .flags = RPC_TASK_ASYNC, |
875 | }; | |
1da177e4 LT |
876 | int status; |
877 | ||
c6d00e63 | 878 | kref_get(&data->kref); |
3e309914 TM |
879 | data->rpc_done = 0; |
880 | data->rpc_status = 0; | |
5138fde0 | 881 | data->timestamp = jiffies; |
c970aa85 | 882 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 883 | if (IS_ERR(task)) |
cdd4e68b | 884 | return PTR_ERR(task); |
cdd4e68b TM |
885 | status = nfs4_wait_for_completion_rpc_task(task); |
886 | if (status != 0) { | |
887 | data->cancelled = 1; | |
888 | smp_wmb(); | |
889 | } else | |
890 | status = data->rpc_status; | |
e6b3c4db | 891 | rpc_put_task(task); |
1da177e4 LT |
892 | return status; |
893 | } | |
894 | ||
24ac23ab | 895 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 896 | { |
24ac23ab TM |
897 | struct nfs4_opendata *data = calldata; |
898 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 899 | |
24ac23ab TM |
900 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
901 | return; | |
aac00a8d TM |
902 | /* |
903 | * Check if we still need to send an OPEN call, or if we can use | |
904 | * a delegation instead. | |
905 | */ | |
906 | if (data->state != NULL) { | |
907 | struct nfs_delegation *delegation; | |
908 | ||
6ee41268 TM |
909 | if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL))) |
910 | goto out_no_action; | |
aac00a8d TM |
911 | rcu_read_lock(); |
912 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
913 | if (delegation != NULL && | |
15c831bf | 914 | test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) == 0) { |
aac00a8d | 915 | rcu_read_unlock(); |
6ee41268 | 916 | goto out_no_action; |
aac00a8d TM |
917 | } |
918 | rcu_read_unlock(); | |
919 | } | |
24ac23ab | 920 | /* Update sequence id. */ |
9f958ab8 | 921 | data->o_arg.id = sp->so_owner_id.id; |
24ac23ab | 922 | data->o_arg.clientid = sp->so_client->cl_clientid; |
6f220ed5 | 923 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 924 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
6f220ed5 TM |
925 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
926 | } | |
26e976a8 | 927 | data->timestamp = jiffies; |
5138fde0 | 928 | rpc_call_start(task); |
6ee41268 TM |
929 | return; |
930 | out_no_action: | |
931 | task->tk_action = NULL; | |
932 | ||
24ac23ab | 933 | } |
1da177e4 | 934 | |
24ac23ab TM |
935 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
936 | { | |
937 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 938 | |
24ac23ab TM |
939 | data->rpc_status = task->tk_status; |
940 | if (RPC_ASSASSINATED(task)) | |
941 | return; | |
942 | if (task->tk_status == 0) { | |
943 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
944 | case S_IFREG: |
945 | break; | |
946 | case S_IFLNK: | |
24ac23ab | 947 | data->rpc_status = -ELOOP; |
6f926b5b TM |
948 | break; |
949 | case S_IFDIR: | |
24ac23ab | 950 | data->rpc_status = -EISDIR; |
6f926b5b TM |
951 | break; |
952 | default: | |
24ac23ab | 953 | data->rpc_status = -ENOTDIR; |
6f926b5b | 954 | } |
26e976a8 | 955 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
956 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
957 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 958 | } |
3e309914 | 959 | data->rpc_done = 1; |
24ac23ab | 960 | } |
6f926b5b | 961 | |
24ac23ab TM |
962 | static void nfs4_open_release(void *calldata) |
963 | { | |
964 | struct nfs4_opendata *data = calldata; | |
965 | struct nfs4_state *state = NULL; | |
966 | ||
967 | /* If this request hasn't been cancelled, do nothing */ | |
968 | if (data->cancelled == 0) | |
969 | goto out_free; | |
970 | /* In case of error, no cleanup! */ | |
3e309914 | 971 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
972 | goto out_free; |
973 | /* In case we need an open_confirm, no cleanup! */ | |
974 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
975 | goto out_free; | |
24ac23ab | 976 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 977 | if (!IS_ERR(state)) |
4a35bd41 | 978 | nfs4_close_state(&data->path, state, data->o_arg.open_flags); |
24ac23ab | 979 | out_free: |
c6d00e63 | 980 | nfs4_opendata_put(data); |
24ac23ab TM |
981 | } |
982 | ||
983 | static const struct rpc_call_ops nfs4_open_ops = { | |
984 | .rpc_call_prepare = nfs4_open_prepare, | |
985 | .rpc_call_done = nfs4_open_done, | |
986 | .rpc_release = nfs4_open_release, | |
987 | }; | |
988 | ||
989 | /* | |
990 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
991 | */ | |
992 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
993 | { | |
994 | struct inode *dir = data->dir->d_inode; | |
995 | struct nfs_server *server = NFS_SERVER(dir); | |
996 | struct nfs_openargs *o_arg = &data->o_arg; | |
997 | struct nfs_openres *o_res = &data->o_res; | |
998 | struct rpc_task *task; | |
5138fde0 TM |
999 | struct rpc_message msg = { |
1000 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1001 | .rpc_argp = o_arg, | |
1002 | .rpc_resp = o_res, | |
1003 | .rpc_cred = data->owner->so_cred, | |
1004 | }; | |
c970aa85 TM |
1005 | struct rpc_task_setup task_setup_data = { |
1006 | .rpc_client = server->client, | |
5138fde0 | 1007 | .rpc_message = &msg, |
c970aa85 TM |
1008 | .callback_ops = &nfs4_open_ops, |
1009 | .callback_data = data, | |
101070ca | 1010 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1011 | .flags = RPC_TASK_ASYNC, |
1012 | }; | |
24ac23ab TM |
1013 | int status; |
1014 | ||
c6d00e63 | 1015 | kref_get(&data->kref); |
3e309914 TM |
1016 | data->rpc_done = 0; |
1017 | data->rpc_status = 0; | |
2ced46c2 | 1018 | data->cancelled = 0; |
c970aa85 | 1019 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1020 | if (IS_ERR(task)) |
24ac23ab | 1021 | return PTR_ERR(task); |
24ac23ab TM |
1022 | status = nfs4_wait_for_completion_rpc_task(task); |
1023 | if (status != 0) { | |
1024 | data->cancelled = 1; | |
1025 | smp_wmb(); | |
1026 | } else | |
1027 | status = data->rpc_status; | |
e6b3c4db | 1028 | rpc_put_task(task); |
3e309914 | 1029 | if (status != 0 || !data->rpc_done) |
24ac23ab TM |
1030 | return status; |
1031 | ||
9936781d TM |
1032 | if (o_res->fh.size == 0) |
1033 | _nfs4_proc_lookup(dir, o_arg->name, &o_res->fh, o_res->f_attr); | |
1034 | ||
56ae19f3 TM |
1035 | if (o_arg->open_flags & O_CREAT) { |
1036 | update_changeattr(dir, &o_res->cinfo); | |
1037 | nfs_post_op_update_inode(dir, o_res->dir_attr); | |
1038 | } else | |
1039 | nfs_refresh_inode(dir, o_res->dir_attr); | |
1da177e4 | 1040 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1041 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1042 | if (status != 0) |
24ac23ab | 1043 | return status; |
1da177e4 LT |
1044 | } |
1045 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1046 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1047 | return 0; |
1da177e4 LT |
1048 | } |
1049 | ||
10afec90 | 1050 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
58d9714a | 1051 | { |
7539bbab | 1052 | struct nfs_client *clp = server->nfs_client; |
6b30954e | 1053 | int ret; |
58d9714a | 1054 | |
6b30954e | 1055 | for (;;) { |
65de872e | 1056 | ret = nfs4_wait_clnt_recover(clp); |
6b30954e TM |
1057 | if (ret != 0) |
1058 | return ret; | |
e598d843 TM |
1059 | if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) && |
1060 | !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state)) | |
6b30954e | 1061 | break; |
58d9714a | 1062 | nfs4_schedule_state_recovery(clp); |
6b30954e TM |
1063 | } |
1064 | return 0; | |
58d9714a TM |
1065 | } |
1066 | ||
1da177e4 LT |
1067 | /* |
1068 | * OPEN_EXPIRED: | |
1069 | * reclaim state on the server after a network partition. | |
1070 | * Assumes caller holds the appropriate lock | |
1071 | */ | |
539cd03a | 1072 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1073 | { |
e56e0b78 | 1074 | struct nfs4_opendata *opendata; |
864472e9 | 1075 | int ret; |
1da177e4 | 1076 | |
6f220ed5 TM |
1077 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1078 | if (IS_ERR(opendata)) | |
1079 | return PTR_ERR(opendata); | |
864472e9 | 1080 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1081 | if (ret == -ESTALE) |
539cd03a | 1082 | d_drop(ctx->path.dentry); |
c6d00e63 | 1083 | nfs4_opendata_put(opendata); |
864472e9 | 1084 | return ret; |
1da177e4 LT |
1085 | } |
1086 | ||
539cd03a | 1087 | static inline int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1088 | { |
539cd03a | 1089 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1090 | struct nfs4_exception exception = { }; |
1091 | int err; | |
1092 | ||
1093 | do { | |
539cd03a | 1094 | err = _nfs4_open_expired(ctx, state); |
202b50dc TM |
1095 | if (err == -NFS4ERR_DELAY) |
1096 | nfs4_handle_exception(server, err, &exception); | |
1097 | } while (exception.retry); | |
1098 | return err; | |
1099 | } | |
1100 | ||
1da177e4 LT |
1101 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1102 | { | |
1da177e4 | 1103 | struct nfs_open_context *ctx; |
864472e9 | 1104 | int ret; |
1da177e4 | 1105 | |
864472e9 TM |
1106 | ctx = nfs4_state_find_open_context(state); |
1107 | if (IS_ERR(ctx)) | |
1108 | return PTR_ERR(ctx); | |
539cd03a | 1109 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1110 | put_nfs_open_context(ctx); |
1111 | return ret; | |
1da177e4 LT |
1112 | } |
1113 | ||
aa53ed54 JL |
1114 | /* |
1115 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1116 | * fields corresponding to attributes that were used to store the verifier. | |
1117 | * Make sure we clobber those fields in the later setattr call | |
1118 | */ | |
1119 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1120 | { | |
1121 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1122 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1123 | sattr->ia_valid |= ATTR_ATIME; | |
1124 | ||
1125 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1126 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1127 | sattr->ia_valid |= ATTR_MTIME; | |
1128 | } | |
1129 | ||
1da177e4 | 1130 | /* |
24ac23ab | 1131 | * Returns a referenced nfs4_state |
1da177e4 | 1132 | */ |
ad389da7 | 1133 | static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res) |
1da177e4 LT |
1134 | { |
1135 | struct nfs4_state_owner *sp; | |
1136 | struct nfs4_state *state = NULL; | |
1137 | struct nfs_server *server = NFS_SERVER(dir); | |
7539bbab | 1138 | struct nfs_client *clp = server->nfs_client; |
e56e0b78 | 1139 | struct nfs4_opendata *opendata; |
aac00a8d | 1140 | int status; |
1da177e4 LT |
1141 | |
1142 | /* Protect against reboot recovery conflicts */ | |
1da177e4 LT |
1143 | status = -ENOMEM; |
1144 | if (!(sp = nfs4_get_state_owner(server, cred))) { | |
1145 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); | |
1146 | goto out_err; | |
1147 | } | |
58d9714a TM |
1148 | status = nfs4_recover_expired_lease(server); |
1149 | if (status != 0) | |
b4454fe1 | 1150 | goto err_put_state_owner; |
aac00a8d TM |
1151 | if (path->dentry->d_inode != NULL) |
1152 | nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE)); | |
58d9714a TM |
1153 | down_read(&clp->cl_sem); |
1154 | status = -ENOMEM; | |
ad389da7 | 1155 | opendata = nfs4_opendata_alloc(path, sp, flags, sattr); |
e56e0b78 | 1156 | if (opendata == NULL) |
76723de0 | 1157 | goto err_release_rwsem; |
1da177e4 | 1158 | |
aac00a8d TM |
1159 | if (path->dentry->d_inode != NULL) |
1160 | opendata->state = nfs4_get_open_state(path->dentry->d_inode, sp); | |
1161 | ||
24ac23ab | 1162 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1163 | if (status != 0) |
c6d00e63 | 1164 | goto err_opendata_put; |
1da177e4 | 1165 | |
aa53ed54 JL |
1166 | if (opendata->o_arg.open_flags & O_EXCL) |
1167 | nfs4_exclusive_attrset(opendata, sattr); | |
1168 | ||
24ac23ab | 1169 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1170 | status = PTR_ERR(state); |
1171 | if (IS_ERR(state)) | |
c6d00e63 | 1172 | goto err_opendata_put; |
c6d00e63 | 1173 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1174 | nfs4_put_state_owner(sp); |
1175 | up_read(&clp->cl_sem); | |
1176 | *res = state; | |
1177 | return 0; | |
c6d00e63 TM |
1178 | err_opendata_put: |
1179 | nfs4_opendata_put(opendata); | |
76723de0 TM |
1180 | err_release_rwsem: |
1181 | up_read(&clp->cl_sem); | |
e56e0b78 TM |
1182 | err_put_state_owner: |
1183 | nfs4_put_state_owner(sp); | |
1da177e4 | 1184 | out_err: |
1da177e4 LT |
1185 | *res = NULL; |
1186 | return status; | |
1187 | } | |
1188 | ||
1189 | ||
ad389da7 | 1190 | static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred) |
1da177e4 LT |
1191 | { |
1192 | struct nfs4_exception exception = { }; | |
1193 | struct nfs4_state *res; | |
1194 | int status; | |
1195 | ||
1196 | do { | |
ad389da7 | 1197 | status = _nfs4_do_open(dir, path, flags, sattr, cred, &res); |
1da177e4 LT |
1198 | if (status == 0) |
1199 | break; | |
1200 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1201 | * book-keeping w.r.t. state-changing operations | |
1202 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1203 | * It is actually a sign of a bug on the client or on the server. | |
1204 | * | |
1205 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1206 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1207 | * have unhashed the old state_owner for us, and that we can |
1208 | * therefore safely retry using a new one. We should still warn | |
1209 | * the user though... | |
1210 | */ | |
1211 | if (status == -NFS4ERR_BAD_SEQID) { | |
6f43ddcc TM |
1212 | printk(KERN_WARNING "NFS: v4 server %s " |
1213 | " returned a bad sequence-id error!\n", | |
1214 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1215 | exception.retry = 1; |
1216 | continue; | |
1217 | } | |
550f5747 TM |
1218 | /* |
1219 | * BAD_STATEID on OPEN means that the server cancelled our | |
1220 | * state before it received the OPEN_CONFIRM. | |
1221 | * Recover by retrying the request as per the discussion | |
1222 | * on Page 181 of RFC3530. | |
1223 | */ | |
1224 | if (status == -NFS4ERR_BAD_STATEID) { | |
1225 | exception.retry = 1; | |
1226 | continue; | |
1227 | } | |
aac00a8d TM |
1228 | if (status == -EAGAIN) { |
1229 | /* We must have found a delegation */ | |
1230 | exception.retry = 1; | |
1231 | continue; | |
1232 | } | |
1da177e4 LT |
1233 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1234 | status, &exception)); | |
1235 | } while (exception.retry); | |
1236 | return res; | |
1237 | } | |
1238 | ||
659bfcd6 TM |
1239 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1240 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1241 | struct nfs4_state *state) | |
1da177e4 | 1242 | { |
3e4f6290 | 1243 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1244 | struct nfs_setattrargs arg = { |
3e4f6290 | 1245 | .fh = NFS_FH(inode), |
1da177e4 LT |
1246 | .iap = sattr, |
1247 | .server = server, | |
1248 | .bitmask = server->attr_bitmask, | |
1249 | }; | |
1250 | struct nfs_setattrres res = { | |
1251 | .fattr = fattr, | |
1252 | .server = server, | |
1253 | }; | |
1254 | struct rpc_message msg = { | |
659bfcd6 TM |
1255 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
1256 | .rpc_argp = &arg, | |
1257 | .rpc_resp = &res, | |
1258 | .rpc_cred = cred, | |
1da177e4 | 1259 | }; |
26e976a8 | 1260 | unsigned long timestamp = jiffies; |
65e4308d | 1261 | int status; |
1da177e4 | 1262 | |
0e574af1 | 1263 | nfs_fattr_init(fattr); |
1da177e4 | 1264 | |
3e4f6290 TM |
1265 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) { |
1266 | /* Use that stateid */ | |
1267 | } else if (state != NULL) { | |
08e9eac4 TM |
1268 | nfs4_copy_stateid(&arg.stateid, state, current->files); |
1269 | } else | |
1da177e4 LT |
1270 | memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid)); |
1271 | ||
65e4308d | 1272 | status = rpc_call_sync(server->client, &msg, 0); |
26e976a8 TM |
1273 | if (status == 0 && state != NULL) |
1274 | renew_lease(server, timestamp); | |
65e4308d | 1275 | return status; |
1da177e4 LT |
1276 | } |
1277 | ||
659bfcd6 TM |
1278 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1279 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1280 | struct nfs4_state *state) | |
1da177e4 | 1281 | { |
3e4f6290 | 1282 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
1283 | struct nfs4_exception exception = { }; |
1284 | int err; | |
1285 | do { | |
1286 | err = nfs4_handle_exception(server, | |
659bfcd6 | 1287 | _nfs4_do_setattr(inode, cred, fattr, sattr, state), |
1da177e4 LT |
1288 | &exception); |
1289 | } while (exception.retry); | |
1290 | return err; | |
1291 | } | |
1292 | ||
1293 | struct nfs4_closedata { | |
4a35bd41 | 1294 | struct path path; |
1da177e4 LT |
1295 | struct inode *inode; |
1296 | struct nfs4_state *state; | |
1297 | struct nfs_closeargs arg; | |
1298 | struct nfs_closeres res; | |
516a6af6 | 1299 | struct nfs_fattr fattr; |
26e976a8 | 1300 | unsigned long timestamp; |
1da177e4 LT |
1301 | }; |
1302 | ||
963d8fe5 | 1303 | static void nfs4_free_closedata(void *data) |
9512135d | 1304 | { |
963d8fe5 TM |
1305 | struct nfs4_closedata *calldata = data; |
1306 | struct nfs4_state_owner *sp = calldata->state->owner; | |
9512135d TM |
1307 | |
1308 | nfs4_put_open_state(calldata->state); | |
1309 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 1310 | nfs4_put_state_owner(sp); |
31f31db1 | 1311 | path_put(&calldata->path); |
9512135d TM |
1312 | kfree(calldata); |
1313 | } | |
1314 | ||
963d8fe5 | 1315 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 1316 | { |
963d8fe5 | 1317 | struct nfs4_closedata *calldata = data; |
1da177e4 | 1318 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
1319 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
1320 | ||
4ce70ada TM |
1321 | if (RPC_ASSASSINATED(task)) |
1322 | return; | |
1da177e4 LT |
1323 | /* hmm. we are done with the inode, and in the process of freeing |
1324 | * the state_owner. we keep this around to process errors | |
1325 | */ | |
1da177e4 LT |
1326 | switch (task->tk_status) { |
1327 | case 0: | |
45328c35 | 1328 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 1329 | renew_lease(server, calldata->timestamp); |
1da177e4 LT |
1330 | break; |
1331 | case -NFS4ERR_STALE_STATEID: | |
1332 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
1333 | break; |
1334 | default: | |
1335 | if (nfs4_async_handle_error(task, server) == -EAGAIN) { | |
1336 | rpc_restart_call(task); | |
1337 | return; | |
1338 | } | |
1339 | } | |
516a6af6 | 1340 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
1da177e4 LT |
1341 | } |
1342 | ||
4ce70ada | 1343 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 1344 | { |
4ce70ada | 1345 | struct nfs4_closedata *calldata = data; |
9512135d | 1346 | struct nfs4_state *state = calldata->state; |
003707c7 | 1347 | int clear_rd, clear_wr, clear_rdwr; |
9512135d | 1348 | |
963d8fe5 | 1349 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 1350 | return; |
003707c7 | 1351 | |
003707c7 | 1352 | clear_rd = clear_wr = clear_rdwr = 0; |
4cecb76f | 1353 | spin_lock(&state->owner->so_lock); |
003707c7 | 1354 | /* Calculate the change in open mode */ |
e7616923 | 1355 | if (state->n_rdwr == 0) { |
003707c7 | 1356 | if (state->n_rdonly == 0) { |
003707c7 TM |
1357 | clear_rd |= test_and_clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
1358 | clear_rdwr |= test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1359 | } | |
1360 | if (state->n_wronly == 0) { | |
003707c7 TM |
1361 | clear_wr |= test_and_clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
1362 | clear_rdwr |= test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1363 | } | |
e7616923 | 1364 | } |
4cecb76f | 1365 | spin_unlock(&state->owner->so_lock); |
003707c7 | 1366 | if (!clear_rd && !clear_wr && !clear_rdwr) { |
963d8fe5 TM |
1367 | /* Note: exit _without_ calling nfs4_close_done */ |
1368 | task->tk_action = NULL; | |
9512135d TM |
1369 | return; |
1370 | } | |
516a6af6 | 1371 | nfs_fattr_init(calldata->res.fattr); |
45328c35 | 1372 | if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) { |
5138fde0 | 1373 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
45328c35 TM |
1374 | calldata->arg.open_flags = FMODE_READ; |
1375 | } else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) { | |
5138fde0 | 1376 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
45328c35 TM |
1377 | calldata->arg.open_flags = FMODE_WRITE; |
1378 | } | |
26e976a8 | 1379 | calldata->timestamp = jiffies; |
5138fde0 | 1380 | rpc_call_start(task); |
1da177e4 LT |
1381 | } |
1382 | ||
963d8fe5 | 1383 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 1384 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
1385 | .rpc_call_done = nfs4_close_done, |
1386 | .rpc_release = nfs4_free_closedata, | |
1387 | }; | |
1388 | ||
1da177e4 LT |
1389 | /* |
1390 | * It is possible for data to be read/written from a mem-mapped file | |
1391 | * after the sys_close call (which hits the vfs layer as a flush). | |
1392 | * This means that we can't safely call nfsv4 close on a file until | |
1393 | * the inode is cleared. This in turn means that we are not good | |
1394 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
1395 | * share state even when we are done with one of the three share | |
1396 | * stateid's in the inode. | |
1397 | * | |
1398 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
1399 | */ | |
a49c3c77 | 1400 | int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait) |
1da177e4 | 1401 | { |
4a35bd41 | 1402 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 1403 | struct nfs4_closedata *calldata; |
b39e625b TM |
1404 | struct nfs4_state_owner *sp = state->owner; |
1405 | struct rpc_task *task; | |
5138fde0 TM |
1406 | struct rpc_message msg = { |
1407 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
1408 | .rpc_cred = state->owner->so_cred, | |
1409 | }; | |
c970aa85 TM |
1410 | struct rpc_task_setup task_setup_data = { |
1411 | .rpc_client = server->client, | |
5138fde0 | 1412 | .rpc_message = &msg, |
c970aa85 | 1413 | .callback_ops = &nfs4_close_ops, |
101070ca | 1414 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1415 | .flags = RPC_TASK_ASYNC, |
1416 | }; | |
9512135d | 1417 | int status = -ENOMEM; |
1da177e4 | 1418 | |
9512135d | 1419 | calldata = kmalloc(sizeof(*calldata), GFP_KERNEL); |
1da177e4 | 1420 | if (calldata == NULL) |
9512135d | 1421 | goto out; |
4a35bd41 | 1422 | calldata->inode = state->inode; |
1da177e4 | 1423 | calldata->state = state; |
4a35bd41 | 1424 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 1425 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 1426 | /* Serialization for the sequence id */ |
cee54fc9 | 1427 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid); |
9512135d TM |
1428 | if (calldata->arg.seqid == NULL) |
1429 | goto out_free_calldata; | |
516a6af6 TM |
1430 | calldata->arg.bitmask = server->attr_bitmask; |
1431 | calldata->res.fattr = &calldata->fattr; | |
c1d51931 | 1432 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 1433 | calldata->res.server = server; |
4a35bd41 TM |
1434 | calldata->path.mnt = mntget(path->mnt); |
1435 | calldata->path.dentry = dget(path->dentry); | |
9512135d | 1436 | |
5138fde0 TM |
1437 | msg.rpc_argp = &calldata->arg, |
1438 | msg.rpc_resp = &calldata->res, | |
c970aa85 TM |
1439 | task_setup_data.callback_data = calldata; |
1440 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
1441 | if (IS_ERR(task)) |
1442 | return PTR_ERR(task); | |
a49c3c77 TM |
1443 | status = 0; |
1444 | if (wait) | |
1445 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 1446 | rpc_put_task(task); |
a49c3c77 | 1447 | return status; |
9512135d TM |
1448 | out_free_calldata: |
1449 | kfree(calldata); | |
1450 | out: | |
b39e625b TM |
1451 | nfs4_put_open_state(state); |
1452 | nfs4_put_state_owner(sp); | |
9512135d | 1453 | return status; |
1da177e4 LT |
1454 | } |
1455 | ||
4a35bd41 | 1456 | static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state) |
02a913a7 TM |
1457 | { |
1458 | struct file *filp; | |
1b45c46c | 1459 | int ret; |
02a913a7 | 1460 | |
1b45c46c TM |
1461 | /* If the open_intent is for execute, we have an extra check to make */ |
1462 | if (nd->intent.open.flags & FMODE_EXEC) { | |
af22f94a | 1463 | ret = nfs_may_open(state->inode, |
1b45c46c TM |
1464 | state->owner->so_cred, |
1465 | nd->intent.open.flags); | |
1466 | if (ret < 0) | |
1467 | goto out_close; | |
1468 | } | |
4a35bd41 | 1469 | filp = lookup_instantiate_filp(nd, path->dentry, NULL); |
02a913a7 TM |
1470 | if (!IS_ERR(filp)) { |
1471 | struct nfs_open_context *ctx; | |
cd3758e3 | 1472 | ctx = nfs_file_open_context(filp); |
02a913a7 | 1473 | ctx->state = state; |
95cf959b TM |
1474 | return 0; |
1475 | } | |
1b45c46c TM |
1476 | ret = PTR_ERR(filp); |
1477 | out_close: | |
a49c3c77 | 1478 | nfs4_close_sync(path, state, nd->intent.open.flags); |
1b45c46c | 1479 | return ret; |
02a913a7 TM |
1480 | } |
1481 | ||
1482 | struct dentry * | |
1da177e4 LT |
1483 | nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd) |
1484 | { | |
ad389da7 | 1485 | struct path path = { |
4ac91378 | 1486 | .mnt = nd->path.mnt, |
ad389da7 TM |
1487 | .dentry = dentry, |
1488 | }; | |
4ac91378 | 1489 | struct dentry *parent; |
1da177e4 LT |
1490 | struct iattr attr; |
1491 | struct rpc_cred *cred; | |
1492 | struct nfs4_state *state; | |
02a913a7 | 1493 | struct dentry *res; |
1da177e4 LT |
1494 | |
1495 | if (nd->flags & LOOKUP_CREATE) { | |
1496 | attr.ia_mode = nd->intent.open.create_mode; | |
1497 | attr.ia_valid = ATTR_MODE; | |
1498 | if (!IS_POSIXACL(dir)) | |
1499 | attr.ia_mode &= ~current->fs->umask; | |
1500 | } else { | |
1501 | attr.ia_valid = 0; | |
1502 | BUG_ON(nd->intent.open.flags & O_CREAT); | |
1503 | } | |
1504 | ||
98a8e323 | 1505 | cred = rpc_lookup_cred(); |
1da177e4 | 1506 | if (IS_ERR(cred)) |
02a913a7 | 1507 | return (struct dentry *)cred; |
565277f6 TM |
1508 | parent = dentry->d_parent; |
1509 | /* Protect against concurrent sillydeletes */ | |
1510 | nfs_block_sillyrename(parent); | |
ad389da7 | 1511 | state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred); |
1da177e4 | 1512 | put_rpccred(cred); |
02a913a7 | 1513 | if (IS_ERR(state)) { |
d75340cc | 1514 | if (PTR_ERR(state) == -ENOENT) { |
02a913a7 | 1515 | d_add(dentry, NULL); |
d75340cc TM |
1516 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
1517 | } | |
565277f6 | 1518 | nfs_unblock_sillyrename(parent); |
02a913a7 TM |
1519 | return (struct dentry *)state; |
1520 | } | |
24ac23ab | 1521 | res = d_add_unique(dentry, igrab(state->inode)); |
02a913a7 | 1522 | if (res != NULL) |
deee9369 | 1523 | path.dentry = res; |
d75340cc | 1524 | nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir)); |
565277f6 | 1525 | nfs_unblock_sillyrename(parent); |
4a35bd41 | 1526 | nfs4_intent_set_file(nd, &path, state); |
02a913a7 | 1527 | return res; |
1da177e4 LT |
1528 | } |
1529 | ||
1530 | int | |
02a913a7 | 1531 | nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, struct nameidata *nd) |
1da177e4 | 1532 | { |
ad389da7 | 1533 | struct path path = { |
4ac91378 | 1534 | .mnt = nd->path.mnt, |
ad389da7 TM |
1535 | .dentry = dentry, |
1536 | }; | |
1da177e4 LT |
1537 | struct rpc_cred *cred; |
1538 | struct nfs4_state *state; | |
1da177e4 | 1539 | |
98a8e323 | 1540 | cred = rpc_lookup_cred(); |
1da177e4 LT |
1541 | if (IS_ERR(cred)) |
1542 | return PTR_ERR(cred); | |
aac00a8d | 1543 | state = nfs4_do_open(dir, &path, openflags, NULL, cred); |
1da177e4 | 1544 | put_rpccred(cred); |
02a913a7 TM |
1545 | if (IS_ERR(state)) { |
1546 | switch (PTR_ERR(state)) { | |
1547 | case -EPERM: | |
1548 | case -EACCES: | |
1549 | case -EDQUOT: | |
1550 | case -ENOSPC: | |
1551 | case -EROFS: | |
1552 | lookup_instantiate_filp(nd, (struct dentry *)state, NULL); | |
1553 | return 1; | |
b87c0adf CL |
1554 | default: |
1555 | goto out_drop; | |
02a913a7 | 1556 | } |
02a913a7 | 1557 | } |
24ac23ab | 1558 | if (state->inode == dentry->d_inode) { |
d75340cc | 1559 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
4a35bd41 | 1560 | nfs4_intent_set_file(nd, &path, state); |
1da177e4 LT |
1561 | return 1; |
1562 | } | |
a49c3c77 | 1563 | nfs4_close_sync(&path, state, openflags); |
02a913a7 TM |
1564 | out_drop: |
1565 | d_drop(dentry); | |
1da177e4 LT |
1566 | return 0; |
1567 | } | |
1568 | ||
1569 | ||
1570 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
1571 | { | |
1572 | struct nfs4_server_caps_res res = {}; | |
1573 | struct rpc_message msg = { | |
1574 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
1575 | .rpc_argp = fhandle, | |
1576 | .rpc_resp = &res, | |
1577 | }; | |
1578 | int status; | |
1579 | ||
1580 | status = rpc_call_sync(server->client, &msg, 0); | |
1581 | if (status == 0) { | |
1582 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
1583 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) | |
1584 | server->caps |= NFS_CAP_ACLS; | |
1585 | if (res.has_links != 0) | |
1586 | server->caps |= NFS_CAP_HARDLINKS; | |
1587 | if (res.has_symlinks != 0) | |
1588 | server->caps |= NFS_CAP_SYMLINKS; | |
1589 | server->acl_bitmask = res.acl_bitmask; | |
1590 | } | |
1591 | return status; | |
1592 | } | |
1593 | ||
55a97593 | 1594 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
1595 | { |
1596 | struct nfs4_exception exception = { }; | |
1597 | int err; | |
1598 | do { | |
1599 | err = nfs4_handle_exception(server, | |
1600 | _nfs4_server_capabilities(server, fhandle), | |
1601 | &exception); | |
1602 | } while (exception.retry); | |
1603 | return err; | |
1604 | } | |
1605 | ||
1606 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
1607 | struct nfs_fsinfo *info) | |
1608 | { | |
1da177e4 LT |
1609 | struct nfs4_lookup_root_arg args = { |
1610 | .bitmask = nfs4_fattr_bitmap, | |
1611 | }; | |
1612 | struct nfs4_lookup_res res = { | |
1613 | .server = server, | |
0e574af1 | 1614 | .fattr = info->fattr, |
1da177e4 LT |
1615 | .fh = fhandle, |
1616 | }; | |
1617 | struct rpc_message msg = { | |
1618 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
1619 | .rpc_argp = &args, | |
1620 | .rpc_resp = &res, | |
1621 | }; | |
0e574af1 | 1622 | nfs_fattr_init(info->fattr); |
1da177e4 LT |
1623 | return rpc_call_sync(server->client, &msg, 0); |
1624 | } | |
1625 | ||
1626 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
1627 | struct nfs_fsinfo *info) | |
1628 | { | |
1629 | struct nfs4_exception exception = { }; | |
1630 | int err; | |
1631 | do { | |
1632 | err = nfs4_handle_exception(server, | |
1633 | _nfs4_lookup_root(server, fhandle, info), | |
1634 | &exception); | |
1635 | } while (exception.retry); | |
1636 | return err; | |
1637 | } | |
1638 | ||
54ceac45 DH |
1639 | /* |
1640 | * get the file handle for the "/" directory on the server | |
1641 | */ | |
1da177e4 | 1642 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 1643 | struct nfs_fsinfo *info) |
1da177e4 | 1644 | { |
1da177e4 LT |
1645 | int status; |
1646 | ||
1da177e4 | 1647 | status = nfs4_lookup_root(server, fhandle, info); |
1da177e4 LT |
1648 | if (status == 0) |
1649 | status = nfs4_server_capabilities(server, fhandle); | |
1650 | if (status == 0) | |
1651 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 1652 | return nfs4_map_errors(status); |
1da177e4 LT |
1653 | } |
1654 | ||
6b97fd3d MN |
1655 | /* |
1656 | * Get locations and (maybe) other attributes of a referral. | |
1657 | * Note that we'll actually follow the referral later when | |
1658 | * we detect fsid mismatch in inode revalidation | |
1659 | */ | |
56659e99 | 1660 | static int nfs4_get_referral(struct inode *dir, const struct qstr *name, struct nfs_fattr *fattr, struct nfs_fh *fhandle) |
6b97fd3d MN |
1661 | { |
1662 | int status = -ENOMEM; | |
1663 | struct page *page = NULL; | |
1664 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
1665 | |
1666 | page = alloc_page(GFP_KERNEL); | |
1667 | if (page == NULL) | |
1668 | goto out; | |
1669 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
1670 | if (locations == NULL) | |
1671 | goto out; | |
1672 | ||
c228fd3a | 1673 | status = nfs4_proc_fs_locations(dir, name, locations, page); |
6b97fd3d MN |
1674 | if (status != 0) |
1675 | goto out; | |
1676 | /* Make sure server returned a different fsid for the referral */ | |
1677 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
3110ff80 | 1678 | dprintk("%s: server did not return a different fsid for a referral at %s\n", __func__, name->name); |
6b97fd3d MN |
1679 | status = -EIO; |
1680 | goto out; | |
1681 | } | |
1682 | ||
1683 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); | |
1684 | fattr->valid |= NFS_ATTR_FATTR_V4_REFERRAL; | |
1685 | if (!fattr->mode) | |
1686 | fattr->mode = S_IFDIR; | |
1687 | memset(fhandle, 0, sizeof(struct nfs_fh)); | |
1688 | out: | |
1689 | if (page) | |
1690 | __free_page(page); | |
1691 | if (locations) | |
1692 | kfree(locations); | |
1693 | return status; | |
1694 | } | |
1695 | ||
1da177e4 LT |
1696 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
1697 | { | |
1698 | struct nfs4_getattr_arg args = { | |
1699 | .fh = fhandle, | |
1700 | .bitmask = server->attr_bitmask, | |
1701 | }; | |
1702 | struct nfs4_getattr_res res = { | |
1703 | .fattr = fattr, | |
1704 | .server = server, | |
1705 | }; | |
1706 | struct rpc_message msg = { | |
1707 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
1708 | .rpc_argp = &args, | |
1709 | .rpc_resp = &res, | |
1710 | }; | |
1711 | ||
0e574af1 | 1712 | nfs_fattr_init(fattr); |
1da177e4 LT |
1713 | return rpc_call_sync(server->client, &msg, 0); |
1714 | } | |
1715 | ||
1716 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
1717 | { | |
1718 | struct nfs4_exception exception = { }; | |
1719 | int err; | |
1720 | do { | |
1721 | err = nfs4_handle_exception(server, | |
1722 | _nfs4_proc_getattr(server, fhandle, fattr), | |
1723 | &exception); | |
1724 | } while (exception.retry); | |
1725 | return err; | |
1726 | } | |
1727 | ||
1728 | /* | |
1729 | * The file is not closed if it is opened due to the a request to change | |
1730 | * the size of the file. The open call will not be needed once the | |
1731 | * VFS layer lookup-intents are implemented. | |
1732 | * | |
1733 | * Close is called when the inode is destroyed. | |
1734 | * If we haven't opened the file for O_WRONLY, we | |
1735 | * need to in the size_change case to obtain a stateid. | |
1736 | * | |
1737 | * Got race? | |
1738 | * Because OPEN is always done by name in nfsv4, it is | |
1739 | * possible that we opened a different file by the same | |
1740 | * name. We can recognize this race condition, but we | |
1741 | * can't do anything about it besides returning an error. | |
1742 | * | |
1743 | * This will be fixed with VFS changes (lookup-intent). | |
1744 | */ | |
1745 | static int | |
1746 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
1747 | struct iattr *sattr) | |
1748 | { | |
08e9eac4 | 1749 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 1750 | struct rpc_cred *cred = NULL; |
d530838b | 1751 | struct nfs4_state *state = NULL; |
1da177e4 LT |
1752 | int status; |
1753 | ||
0e574af1 | 1754 | nfs_fattr_init(fattr); |
1da177e4 | 1755 | |
d530838b | 1756 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
1757 | if (sattr->ia_valid & ATTR_FILE) { |
1758 | struct nfs_open_context *ctx; | |
1759 | ||
1760 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
1761 | if (ctx) { |
1762 | cred = ctx->cred; | |
1763 | state = ctx->state; | |
1764 | } | |
659bfcd6 | 1765 | } |
08e9eac4 | 1766 | |
659bfcd6 | 1767 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
1768 | if (status == 0) |
1769 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
1770 | return status; |
1771 | } | |
1772 | ||
56659e99 TM |
1773 | static int _nfs4_proc_lookupfh(struct nfs_server *server, const struct nfs_fh *dirfh, |
1774 | const struct qstr *name, struct nfs_fh *fhandle, | |
2b3de441 DH |
1775 | struct nfs_fattr *fattr) |
1776 | { | |
1777 | int status; | |
1778 | struct nfs4_lookup_arg args = { | |
1779 | .bitmask = server->attr_bitmask, | |
1780 | .dir_fh = dirfh, | |
1781 | .name = name, | |
1782 | }; | |
1783 | struct nfs4_lookup_res res = { | |
1784 | .server = server, | |
1785 | .fattr = fattr, | |
1786 | .fh = fhandle, | |
1787 | }; | |
1788 | struct rpc_message msg = { | |
1789 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
1790 | .rpc_argp = &args, | |
1791 | .rpc_resp = &res, | |
1792 | }; | |
1793 | ||
1794 | nfs_fattr_init(fattr); | |
1795 | ||
1796 | dprintk("NFS call lookupfh %s\n", name->name); | |
1797 | status = rpc_call_sync(server->client, &msg, 0); | |
1798 | dprintk("NFS reply lookupfh: %d\n", status); | |
2b3de441 DH |
1799 | return status; |
1800 | } | |
1801 | ||
1802 | static int nfs4_proc_lookupfh(struct nfs_server *server, struct nfs_fh *dirfh, | |
1803 | struct qstr *name, struct nfs_fh *fhandle, | |
1804 | struct nfs_fattr *fattr) | |
1805 | { | |
1806 | struct nfs4_exception exception = { }; | |
1807 | int err; | |
1808 | do { | |
4e56e082 TM |
1809 | err = _nfs4_proc_lookupfh(server, dirfh, name, fhandle, fattr); |
1810 | /* FIXME: !!!! */ | |
1811 | if (err == -NFS4ERR_MOVED) { | |
1812 | err = -EREMOTE; | |
1813 | break; | |
1814 | } | |
1815 | err = nfs4_handle_exception(server, err, &exception); | |
2b3de441 DH |
1816 | } while (exception.retry); |
1817 | return err; | |
1818 | } | |
1819 | ||
56659e99 | 1820 | static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, |
1da177e4 LT |
1821 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
1822 | { | |
4e56e082 | 1823 | int status; |
1da177e4 LT |
1824 | |
1825 | dprintk("NFS call lookup %s\n", name->name); | |
4e56e082 | 1826 | status = _nfs4_proc_lookupfh(NFS_SERVER(dir), NFS_FH(dir), name, fhandle, fattr); |
6b97fd3d MN |
1827 | if (status == -NFS4ERR_MOVED) |
1828 | status = nfs4_get_referral(dir, name, fattr, fhandle); | |
1da177e4 LT |
1829 | dprintk("NFS reply lookup: %d\n", status); |
1830 | return status; | |
1831 | } | |
1832 | ||
1833 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
1834 | { | |
1835 | struct nfs4_exception exception = { }; | |
1836 | int err; | |
1837 | do { | |
1838 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
1839 | _nfs4_proc_lookup(dir, name, fhandle, fattr), | |
1840 | &exception); | |
1841 | } while (exception.retry); | |
1842 | return err; | |
1843 | } | |
1844 | ||
1845 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
1846 | { | |
76b32999 TM |
1847 | struct nfs_server *server = NFS_SERVER(inode); |
1848 | struct nfs_fattr fattr; | |
1da177e4 LT |
1849 | struct nfs4_accessargs args = { |
1850 | .fh = NFS_FH(inode), | |
76b32999 TM |
1851 | .bitmask = server->attr_bitmask, |
1852 | }; | |
1853 | struct nfs4_accessres res = { | |
1854 | .server = server, | |
1855 | .fattr = &fattr, | |
1da177e4 | 1856 | }; |
1da177e4 LT |
1857 | struct rpc_message msg = { |
1858 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
1859 | .rpc_argp = &args, | |
1860 | .rpc_resp = &res, | |
1861 | .rpc_cred = entry->cred, | |
1862 | }; | |
1863 | int mode = entry->mask; | |
1864 | int status; | |
1865 | ||
1866 | /* | |
1867 | * Determine which access bits we want to ask for... | |
1868 | */ | |
1869 | if (mode & MAY_READ) | |
1870 | args.access |= NFS4_ACCESS_READ; | |
1871 | if (S_ISDIR(inode->i_mode)) { | |
1872 | if (mode & MAY_WRITE) | |
1873 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
1874 | if (mode & MAY_EXEC) | |
1875 | args.access |= NFS4_ACCESS_LOOKUP; | |
1876 | } else { | |
1877 | if (mode & MAY_WRITE) | |
1878 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
1879 | if (mode & MAY_EXEC) | |
1880 | args.access |= NFS4_ACCESS_EXECUTE; | |
1881 | } | |
76b32999 | 1882 | nfs_fattr_init(&fattr); |
1da177e4 LT |
1883 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
1884 | if (!status) { | |
1885 | entry->mask = 0; | |
1886 | if (res.access & NFS4_ACCESS_READ) | |
1887 | entry->mask |= MAY_READ; | |
1888 | if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE)) | |
1889 | entry->mask |= MAY_WRITE; | |
1890 | if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE)) | |
1891 | entry->mask |= MAY_EXEC; | |
76b32999 | 1892 | nfs_refresh_inode(inode, &fattr); |
1da177e4 LT |
1893 | } |
1894 | return status; | |
1895 | } | |
1896 | ||
1897 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
1898 | { | |
1899 | struct nfs4_exception exception = { }; | |
1900 | int err; | |
1901 | do { | |
1902 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
1903 | _nfs4_proc_access(inode, entry), | |
1904 | &exception); | |
1905 | } while (exception.retry); | |
1906 | return err; | |
1907 | } | |
1908 | ||
1909 | /* | |
1910 | * TODO: For the time being, we don't try to get any attributes | |
1911 | * along with any of the zero-copy operations READ, READDIR, | |
1912 | * READLINK, WRITE. | |
1913 | * | |
1914 | * In the case of the first three, we want to put the GETATTR | |
1915 | * after the read-type operation -- this is because it is hard | |
1916 | * to predict the length of a GETATTR response in v4, and thus | |
1917 | * align the READ data correctly. This means that the GETATTR | |
1918 | * may end up partially falling into the page cache, and we should | |
1919 | * shift it into the 'tail' of the xdr_buf before processing. | |
1920 | * To do this efficiently, we need to know the total length | |
1921 | * of data received, which doesn't seem to be available outside | |
1922 | * of the RPC layer. | |
1923 | * | |
1924 | * In the case of WRITE, we also want to put the GETATTR after | |
1925 | * the operation -- in this case because we want to make sure | |
1926 | * we get the post-operation mtime and size. This means that | |
1927 | * we can't use xdr_encode_pages() as written: we need a variant | |
1928 | * of it which would leave room in the 'tail' iovec. | |
1929 | * | |
1930 | * Both of these changes to the XDR layer would in fact be quite | |
1931 | * minor, but I decided to leave them for a subsequent patch. | |
1932 | */ | |
1933 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
1934 | unsigned int pgbase, unsigned int pglen) | |
1935 | { | |
1936 | struct nfs4_readlink args = { | |
1937 | .fh = NFS_FH(inode), | |
1938 | .pgbase = pgbase, | |
1939 | .pglen = pglen, | |
1940 | .pages = &page, | |
1941 | }; | |
1942 | struct rpc_message msg = { | |
1943 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
1944 | .rpc_argp = &args, | |
1945 | .rpc_resp = NULL, | |
1946 | }; | |
1947 | ||
1948 | return rpc_call_sync(NFS_CLIENT(inode), &msg, 0); | |
1949 | } | |
1950 | ||
1951 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
1952 | unsigned int pgbase, unsigned int pglen) | |
1953 | { | |
1954 | struct nfs4_exception exception = { }; | |
1955 | int err; | |
1956 | do { | |
1957 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
1958 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
1959 | &exception); | |
1960 | } while (exception.retry); | |
1961 | return err; | |
1962 | } | |
1963 | ||
1da177e4 LT |
1964 | /* |
1965 | * Got race? | |
1966 | * We will need to arrange for the VFS layer to provide an atomic open. | |
1967 | * Until then, this create/open method is prone to inefficiency and race | |
1968 | * conditions due to the lookup, create, and open VFS calls from sys_open() | |
1969 | * placed on the wire. | |
1970 | * | |
1971 | * Given the above sorry state of affairs, I'm simply sending an OPEN. | |
1972 | * The file will be opened again in the subsequent VFS open call | |
1973 | * (nfs4_proc_file_open). | |
1974 | * | |
1975 | * The open for read will just hang around to be used by any process that | |
1976 | * opens the file O_RDONLY. This will all be resolved with the VFS changes. | |
1977 | */ | |
1978 | ||
1979 | static int | |
1980 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
02a913a7 | 1981 | int flags, struct nameidata *nd) |
1da177e4 | 1982 | { |
ad389da7 | 1983 | struct path path = { |
4ac91378 | 1984 | .mnt = nd->path.mnt, |
ad389da7 TM |
1985 | .dentry = dentry, |
1986 | }; | |
1da177e4 LT |
1987 | struct nfs4_state *state; |
1988 | struct rpc_cred *cred; | |
1989 | int status = 0; | |
1990 | ||
98a8e323 | 1991 | cred = rpc_lookup_cred(); |
1da177e4 LT |
1992 | if (IS_ERR(cred)) { |
1993 | status = PTR_ERR(cred); | |
1994 | goto out; | |
1995 | } | |
ad389da7 | 1996 | state = nfs4_do_open(dir, &path, flags, sattr, cred); |
d4d9cdcb | 1997 | d_drop(dentry); |
1da177e4 LT |
1998 | if (IS_ERR(state)) { |
1999 | status = PTR_ERR(state); | |
659bfcd6 | 2000 | goto out_putcred; |
1da177e4 | 2001 | } |
d4d9cdcb | 2002 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2003 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
1da177e4 LT |
2004 | if (flags & O_EXCL) { |
2005 | struct nfs_fattr fattr; | |
659bfcd6 | 2006 | status = nfs4_do_setattr(state->inode, cred, &fattr, sattr, state); |
02a913a7 | 2007 | if (status == 0) |
65e4308d | 2008 | nfs_setattr_update_inode(state->inode, sattr); |
aa53ed54 | 2009 | nfs_post_op_update_inode(state->inode, &fattr); |
02a913a7 | 2010 | } |
ad389da7 | 2011 | if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0) |
4a35bd41 | 2012 | status = nfs4_intent_set_file(nd, &path, state); |
02a913a7 | 2013 | else |
a49c3c77 | 2014 | nfs4_close_sync(&path, state, flags); |
659bfcd6 TM |
2015 | out_putcred: |
2016 | put_rpccred(cred); | |
1da177e4 LT |
2017 | out: |
2018 | return status; | |
2019 | } | |
2020 | ||
2021 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2022 | { | |
16e42959 | 2023 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2024 | struct nfs_removeargs args = { |
1da177e4 | 2025 | .fh = NFS_FH(dir), |
4fdc17b2 TM |
2026 | .name.len = name->len, |
2027 | .name.name = name->name, | |
16e42959 TM |
2028 | .bitmask = server->attr_bitmask, |
2029 | }; | |
4fdc17b2 | 2030 | struct nfs_removeres res = { |
16e42959 | 2031 | .server = server, |
1da177e4 | 2032 | }; |
1da177e4 | 2033 | struct rpc_message msg = { |
4fdc17b2 TM |
2034 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
2035 | .rpc_argp = &args, | |
2036 | .rpc_resp = &res, | |
1da177e4 LT |
2037 | }; |
2038 | int status; | |
2039 | ||
4fdc17b2 | 2040 | nfs_fattr_init(&res.dir_attr); |
16e42959 TM |
2041 | status = rpc_call_sync(server->client, &msg, 0); |
2042 | if (status == 0) { | |
2043 | update_changeattr(dir, &res.cinfo); | |
4fdc17b2 | 2044 | nfs_post_op_update_inode(dir, &res.dir_attr); |
16e42959 | 2045 | } |
1da177e4 LT |
2046 | return status; |
2047 | } | |
2048 | ||
2049 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2050 | { | |
2051 | struct nfs4_exception exception = { }; | |
2052 | int err; | |
2053 | do { | |
2054 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2055 | _nfs4_proc_remove(dir, name), | |
2056 | &exception); | |
2057 | } while (exception.retry); | |
2058 | return err; | |
2059 | } | |
2060 | ||
e4eff1a6 | 2061 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 2062 | { |
e4eff1a6 TM |
2063 | struct nfs_server *server = NFS_SERVER(dir); |
2064 | struct nfs_removeargs *args = msg->rpc_argp; | |
2065 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 2066 | |
e4eff1a6 TM |
2067 | args->bitmask = server->attr_bitmask; |
2068 | res->server = server; | |
1da177e4 | 2069 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
1da177e4 LT |
2070 | } |
2071 | ||
e4eff1a6 | 2072 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 2073 | { |
e4eff1a6 TM |
2074 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
2075 | ||
2076 | if (nfs4_async_handle_error(task, res->server) == -EAGAIN) | |
2077 | return 0; | |
2078 | update_changeattr(dir, &res->cinfo); | |
2079 | nfs_post_op_update_inode(dir, &res->dir_attr); | |
2080 | return 1; | |
1da177e4 LT |
2081 | } |
2082 | ||
2083 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2084 | struct inode *new_dir, struct qstr *new_name) | |
2085 | { | |
6caf2c82 | 2086 | struct nfs_server *server = NFS_SERVER(old_dir); |
1da177e4 LT |
2087 | struct nfs4_rename_arg arg = { |
2088 | .old_dir = NFS_FH(old_dir), | |
2089 | .new_dir = NFS_FH(new_dir), | |
2090 | .old_name = old_name, | |
2091 | .new_name = new_name, | |
6caf2c82 TM |
2092 | .bitmask = server->attr_bitmask, |
2093 | }; | |
2094 | struct nfs_fattr old_fattr, new_fattr; | |
2095 | struct nfs4_rename_res res = { | |
2096 | .server = server, | |
2097 | .old_fattr = &old_fattr, | |
2098 | .new_fattr = &new_fattr, | |
1da177e4 | 2099 | }; |
1da177e4 LT |
2100 | struct rpc_message msg = { |
2101 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
2102 | .rpc_argp = &arg, | |
2103 | .rpc_resp = &res, | |
2104 | }; | |
2105 | int status; | |
2106 | ||
6caf2c82 TM |
2107 | nfs_fattr_init(res.old_fattr); |
2108 | nfs_fattr_init(res.new_fattr); | |
2109 | status = rpc_call_sync(server->client, &msg, 0); | |
1da177e4 LT |
2110 | |
2111 | if (!status) { | |
2112 | update_changeattr(old_dir, &res.old_cinfo); | |
6caf2c82 | 2113 | nfs_post_op_update_inode(old_dir, res.old_fattr); |
1da177e4 | 2114 | update_changeattr(new_dir, &res.new_cinfo); |
6caf2c82 | 2115 | nfs_post_op_update_inode(new_dir, res.new_fattr); |
1da177e4 LT |
2116 | } |
2117 | return status; | |
2118 | } | |
2119 | ||
2120 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2121 | struct inode *new_dir, struct qstr *new_name) | |
2122 | { | |
2123 | struct nfs4_exception exception = { }; | |
2124 | int err; | |
2125 | do { | |
2126 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
2127 | _nfs4_proc_rename(old_dir, old_name, | |
2128 | new_dir, new_name), | |
2129 | &exception); | |
2130 | } while (exception.retry); | |
2131 | return err; | |
2132 | } | |
2133 | ||
2134 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2135 | { | |
91ba2eee | 2136 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2137 | struct nfs4_link_arg arg = { |
2138 | .fh = NFS_FH(inode), | |
2139 | .dir_fh = NFS_FH(dir), | |
2140 | .name = name, | |
91ba2eee TM |
2141 | .bitmask = server->attr_bitmask, |
2142 | }; | |
2143 | struct nfs_fattr fattr, dir_attr; | |
2144 | struct nfs4_link_res res = { | |
2145 | .server = server, | |
2146 | .fattr = &fattr, | |
2147 | .dir_attr = &dir_attr, | |
1da177e4 | 2148 | }; |
1da177e4 LT |
2149 | struct rpc_message msg = { |
2150 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
2151 | .rpc_argp = &arg, | |
91ba2eee | 2152 | .rpc_resp = &res, |
1da177e4 LT |
2153 | }; |
2154 | int status; | |
2155 | ||
91ba2eee TM |
2156 | nfs_fattr_init(res.fattr); |
2157 | nfs_fattr_init(res.dir_attr); | |
2158 | status = rpc_call_sync(server->client, &msg, 0); | |
2159 | if (!status) { | |
2160 | update_changeattr(dir, &res.cinfo); | |
2161 | nfs_post_op_update_inode(dir, res.dir_attr); | |
73a3d07c | 2162 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 2163 | } |
1da177e4 LT |
2164 | |
2165 | return status; | |
2166 | } | |
2167 | ||
2168 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2169 | { | |
2170 | struct nfs4_exception exception = { }; | |
2171 | int err; | |
2172 | do { | |
2173 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2174 | _nfs4_proc_link(inode, dir, name), | |
2175 | &exception); | |
2176 | } while (exception.retry); | |
2177 | return err; | |
2178 | } | |
2179 | ||
57dc9a57 TM |
2180 | struct nfs4_createdata { |
2181 | struct rpc_message msg; | |
2182 | struct nfs4_create_arg arg; | |
2183 | struct nfs4_create_res res; | |
2184 | struct nfs_fh fh; | |
2185 | struct nfs_fattr fattr; | |
2186 | struct nfs_fattr dir_fattr; | |
2187 | }; | |
2188 | ||
2189 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
2190 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
2191 | { | |
2192 | struct nfs4_createdata *data; | |
2193 | ||
2194 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
2195 | if (data != NULL) { | |
2196 | struct nfs_server *server = NFS_SERVER(dir); | |
2197 | ||
2198 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
2199 | data->msg.rpc_argp = &data->arg; | |
2200 | data->msg.rpc_resp = &data->res; | |
2201 | data->arg.dir_fh = NFS_FH(dir); | |
2202 | data->arg.server = server; | |
2203 | data->arg.name = name; | |
2204 | data->arg.attrs = sattr; | |
2205 | data->arg.ftype = ftype; | |
2206 | data->arg.bitmask = server->attr_bitmask; | |
2207 | data->res.server = server; | |
2208 | data->res.fh = &data->fh; | |
2209 | data->res.fattr = &data->fattr; | |
2210 | data->res.dir_fattr = &data->dir_fattr; | |
2211 | nfs_fattr_init(data->res.fattr); | |
2212 | nfs_fattr_init(data->res.dir_fattr); | |
2213 | } | |
2214 | return data; | |
2215 | } | |
2216 | ||
2217 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
2218 | { | |
2219 | int status = rpc_call_sync(NFS_CLIENT(dir), &data->msg, 0); | |
2220 | if (status == 0) { | |
2221 | update_changeattr(dir, &data->res.dir_cinfo); | |
2222 | nfs_post_op_update_inode(dir, data->res.dir_fattr); | |
2223 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); | |
2224 | } | |
2225 | return status; | |
2226 | } | |
2227 | ||
2228 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
2229 | { | |
2230 | kfree(data); | |
2231 | } | |
2232 | ||
4f390c15 | 2233 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2234 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 2235 | { |
57dc9a57 TM |
2236 | struct nfs4_createdata *data; |
2237 | int status = -ENAMETOOLONG; | |
1da177e4 | 2238 | |
94a6d753 | 2239 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 2240 | goto out; |
4f390c15 | 2241 | |
57dc9a57 TM |
2242 | status = -ENOMEM; |
2243 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
2244 | if (data == NULL) | |
2245 | goto out; | |
2246 | ||
2247 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
2248 | data->arg.u.symlink.pages = &page; | |
2249 | data->arg.u.symlink.len = len; | |
1da177e4 | 2250 | |
57dc9a57 TM |
2251 | status = nfs4_do_create(dir, dentry, data); |
2252 | ||
2253 | nfs4_free_createdata(data); | |
2254 | out: | |
1da177e4 LT |
2255 | return status; |
2256 | } | |
2257 | ||
4f390c15 | 2258 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2259 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
2260 | { |
2261 | struct nfs4_exception exception = { }; | |
2262 | int err; | |
2263 | do { | |
2264 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
2265 | _nfs4_proc_symlink(dir, dentry, page, |
2266 | len, sattr), | |
1da177e4 LT |
2267 | &exception); |
2268 | } while (exception.retry); | |
2269 | return err; | |
2270 | } | |
2271 | ||
2272 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2273 | struct iattr *sattr) | |
2274 | { | |
57dc9a57 TM |
2275 | struct nfs4_createdata *data; |
2276 | int status = -ENOMEM; | |
1da177e4 | 2277 | |
57dc9a57 TM |
2278 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
2279 | if (data == NULL) | |
2280 | goto out; | |
2281 | ||
2282 | status = nfs4_do_create(dir, dentry, data); | |
2283 | ||
2284 | nfs4_free_createdata(data); | |
2285 | out: | |
1da177e4 LT |
2286 | return status; |
2287 | } | |
2288 | ||
2289 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2290 | struct iattr *sattr) | |
2291 | { | |
2292 | struct nfs4_exception exception = { }; | |
2293 | int err; | |
2294 | do { | |
2295 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2296 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
2297 | &exception); | |
2298 | } while (exception.retry); | |
2299 | return err; | |
2300 | } | |
2301 | ||
2302 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
2303 | u64 cookie, struct page *page, unsigned int count, int plus) | |
2304 | { | |
2305 | struct inode *dir = dentry->d_inode; | |
2306 | struct nfs4_readdir_arg args = { | |
2307 | .fh = NFS_FH(dir), | |
2308 | .pages = &page, | |
2309 | .pgbase = 0, | |
2310 | .count = count, | |
2311 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, | |
2312 | }; | |
2313 | struct nfs4_readdir_res res; | |
2314 | struct rpc_message msg = { | |
2315 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
2316 | .rpc_argp = &args, | |
2317 | .rpc_resp = &res, | |
2318 | .rpc_cred = cred, | |
2319 | }; | |
2320 | int status; | |
2321 | ||
3110ff80 | 2322 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
2323 | dentry->d_parent->d_name.name, |
2324 | dentry->d_name.name, | |
2325 | (unsigned long long)cookie); | |
1da177e4 LT |
2326 | nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args); |
2327 | res.pgbase = args.pgbase; | |
2328 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); | |
2329 | if (status == 0) | |
2330 | memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE); | |
c4812998 TM |
2331 | |
2332 | nfs_invalidate_atime(dir); | |
2333 | ||
3110ff80 | 2334 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
2335 | return status; |
2336 | } | |
2337 | ||
2338 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
2339 | u64 cookie, struct page *page, unsigned int count, int plus) | |
2340 | { | |
2341 | struct nfs4_exception exception = { }; | |
2342 | int err; | |
2343 | do { | |
2344 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
2345 | _nfs4_proc_readdir(dentry, cred, cookie, | |
2346 | page, count, plus), | |
2347 | &exception); | |
2348 | } while (exception.retry); | |
2349 | return err; | |
2350 | } | |
2351 | ||
2352 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
2353 | struct iattr *sattr, dev_t rdev) | |
2354 | { | |
57dc9a57 TM |
2355 | struct nfs4_createdata *data; |
2356 | int mode = sattr->ia_mode; | |
2357 | int status = -ENOMEM; | |
1da177e4 LT |
2358 | |
2359 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
2360 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
57dc9a57 TM |
2361 | |
2362 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); | |
2363 | if (data == NULL) | |
2364 | goto out; | |
2365 | ||
1da177e4 | 2366 | if (S_ISFIFO(mode)) |
57dc9a57 | 2367 | data->arg.ftype = NF4FIFO; |
1da177e4 | 2368 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
2369 | data->arg.ftype = NF4BLK; |
2370 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
2371 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
2372 | } |
2373 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
2374 | data->arg.ftype = NF4CHR; |
2375 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
2376 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 | 2377 | } |
1da177e4 | 2378 | |
57dc9a57 TM |
2379 | status = nfs4_do_create(dir, dentry, data); |
2380 | ||
2381 | nfs4_free_createdata(data); | |
2382 | out: | |
1da177e4 LT |
2383 | return status; |
2384 | } | |
2385 | ||
2386 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
2387 | struct iattr *sattr, dev_t rdev) | |
2388 | { | |
2389 | struct nfs4_exception exception = { }; | |
2390 | int err; | |
2391 | do { | |
2392 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2393 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
2394 | &exception); | |
2395 | } while (exception.retry); | |
2396 | return err; | |
2397 | } | |
2398 | ||
2399 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
2400 | struct nfs_fsstat *fsstat) | |
2401 | { | |
2402 | struct nfs4_statfs_arg args = { | |
2403 | .fh = fhandle, | |
2404 | .bitmask = server->attr_bitmask, | |
2405 | }; | |
2406 | struct rpc_message msg = { | |
2407 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
2408 | .rpc_argp = &args, | |
2409 | .rpc_resp = fsstat, | |
2410 | }; | |
2411 | ||
0e574af1 | 2412 | nfs_fattr_init(fsstat->fattr); |
1da177e4 LT |
2413 | return rpc_call_sync(server->client, &msg, 0); |
2414 | } | |
2415 | ||
2416 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
2417 | { | |
2418 | struct nfs4_exception exception = { }; | |
2419 | int err; | |
2420 | do { | |
2421 | err = nfs4_handle_exception(server, | |
2422 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
2423 | &exception); | |
2424 | } while (exception.retry); | |
2425 | return err; | |
2426 | } | |
2427 | ||
2428 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
2429 | struct nfs_fsinfo *fsinfo) | |
2430 | { | |
2431 | struct nfs4_fsinfo_arg args = { | |
2432 | .fh = fhandle, | |
2433 | .bitmask = server->attr_bitmask, | |
2434 | }; | |
2435 | struct rpc_message msg = { | |
2436 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
2437 | .rpc_argp = &args, | |
2438 | .rpc_resp = fsinfo, | |
2439 | }; | |
2440 | ||
2441 | return rpc_call_sync(server->client, &msg, 0); | |
2442 | } | |
2443 | ||
2444 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
2445 | { | |
2446 | struct nfs4_exception exception = { }; | |
2447 | int err; | |
2448 | ||
2449 | do { | |
2450 | err = nfs4_handle_exception(server, | |
2451 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
2452 | &exception); | |
2453 | } while (exception.retry); | |
2454 | return err; | |
2455 | } | |
2456 | ||
2457 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
2458 | { | |
0e574af1 | 2459 | nfs_fattr_init(fsinfo->fattr); |
1da177e4 LT |
2460 | return nfs4_do_fsinfo(server, fhandle, fsinfo); |
2461 | } | |
2462 | ||
2463 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
2464 | struct nfs_pathconf *pathconf) | |
2465 | { | |
2466 | struct nfs4_pathconf_arg args = { | |
2467 | .fh = fhandle, | |
2468 | .bitmask = server->attr_bitmask, | |
2469 | }; | |
2470 | struct rpc_message msg = { | |
2471 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
2472 | .rpc_argp = &args, | |
2473 | .rpc_resp = pathconf, | |
2474 | }; | |
2475 | ||
2476 | /* None of the pathconf attributes are mandatory to implement */ | |
2477 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
2478 | memset(pathconf, 0, sizeof(*pathconf)); | |
2479 | return 0; | |
2480 | } | |
2481 | ||
0e574af1 | 2482 | nfs_fattr_init(pathconf->fattr); |
1da177e4 LT |
2483 | return rpc_call_sync(server->client, &msg, 0); |
2484 | } | |
2485 | ||
2486 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
2487 | struct nfs_pathconf *pathconf) | |
2488 | { | |
2489 | struct nfs4_exception exception = { }; | |
2490 | int err; | |
2491 | ||
2492 | do { | |
2493 | err = nfs4_handle_exception(server, | |
2494 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
2495 | &exception); | |
2496 | } while (exception.retry); | |
2497 | return err; | |
2498 | } | |
2499 | ||
ec06c096 | 2500 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 2501 | { |
ec06c096 | 2502 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 2503 | |
ec06c096 | 2504 | if (nfs4_async_handle_error(task, server) == -EAGAIN) { |
1da177e4 | 2505 | rpc_restart_call(task); |
ec06c096 | 2506 | return -EAGAIN; |
1da177e4 | 2507 | } |
8850df99 TM |
2508 | |
2509 | nfs_invalidate_atime(data->inode); | |
1da177e4 | 2510 | if (task->tk_status > 0) |
ec06c096 TM |
2511 | renew_lease(server, data->timestamp); |
2512 | return 0; | |
1da177e4 LT |
2513 | } |
2514 | ||
bdc7f021 | 2515 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 2516 | { |
1da177e4 | 2517 | data->timestamp = jiffies; |
bdc7f021 | 2518 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
1da177e4 LT |
2519 | } |
2520 | ||
788e7a89 | 2521 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 2522 | { |
1da177e4 LT |
2523 | struct inode *inode = data->inode; |
2524 | ||
2525 | if (nfs4_async_handle_error(task, NFS_SERVER(inode)) == -EAGAIN) { | |
2526 | rpc_restart_call(task); | |
788e7a89 | 2527 | return -EAGAIN; |
1da177e4 | 2528 | } |
4f9838c7 | 2529 | if (task->tk_status >= 0) { |
1da177e4 | 2530 | renew_lease(NFS_SERVER(inode), data->timestamp); |
70ca8852 | 2531 | nfs_post_op_update_inode_force_wcc(inode, data->res.fattr); |
4f9838c7 | 2532 | } |
788e7a89 | 2533 | return 0; |
1da177e4 LT |
2534 | } |
2535 | ||
bdc7f021 | 2536 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 2537 | { |
bdc7f021 TM |
2538 | struct nfs_server *server = NFS_SERVER(data->inode); |
2539 | ||
4f9838c7 TM |
2540 | data->args.bitmask = server->attr_bitmask; |
2541 | data->res.server = server; | |
1da177e4 LT |
2542 | data->timestamp = jiffies; |
2543 | ||
bdc7f021 | 2544 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
1da177e4 LT |
2545 | } |
2546 | ||
788e7a89 | 2547 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 2548 | { |
1da177e4 LT |
2549 | struct inode *inode = data->inode; |
2550 | ||
2551 | if (nfs4_async_handle_error(task, NFS_SERVER(inode)) == -EAGAIN) { | |
2552 | rpc_restart_call(task); | |
788e7a89 | 2553 | return -EAGAIN; |
1da177e4 | 2554 | } |
9e08a3c5 | 2555 | nfs_refresh_inode(inode, data->res.fattr); |
788e7a89 | 2556 | return 0; |
1da177e4 LT |
2557 | } |
2558 | ||
bdc7f021 | 2559 | static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 2560 | { |
788e7a89 | 2561 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 2562 | |
4f9838c7 TM |
2563 | data->args.bitmask = server->attr_bitmask; |
2564 | data->res.server = server; | |
bdc7f021 | 2565 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
1da177e4 LT |
2566 | } |
2567 | ||
2568 | /* | |
2569 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
2570 | * standalone procedure for queueing an asynchronous RENEW. | |
2571 | */ | |
963d8fe5 | 2572 | static void nfs4_renew_done(struct rpc_task *task, void *data) |
1da177e4 | 2573 | { |
adfa6f98 | 2574 | struct nfs_client *clp = (struct nfs_client *)task->tk_msg.rpc_argp; |
963d8fe5 | 2575 | unsigned long timestamp = (unsigned long)data; |
1da177e4 LT |
2576 | |
2577 | if (task->tk_status < 0) { | |
2578 | switch (task->tk_status) { | |
2579 | case -NFS4ERR_STALE_CLIENTID: | |
2580 | case -NFS4ERR_EXPIRED: | |
2581 | case -NFS4ERR_CB_PATH_DOWN: | |
2582 | nfs4_schedule_state_recovery(clp); | |
2583 | } | |
2584 | return; | |
2585 | } | |
2586 | spin_lock(&clp->cl_lock); | |
2587 | if (time_before(clp->cl_last_renewal,timestamp)) | |
2588 | clp->cl_last_renewal = timestamp; | |
2589 | spin_unlock(&clp->cl_lock); | |
2590 | } | |
2591 | ||
963d8fe5 TM |
2592 | static const struct rpc_call_ops nfs4_renew_ops = { |
2593 | .rpc_call_done = nfs4_renew_done, | |
2594 | }; | |
2595 | ||
adfa6f98 | 2596 | int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
2597 | { |
2598 | struct rpc_message msg = { | |
2599 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
2600 | .rpc_argp = clp, | |
b4454fe1 | 2601 | .rpc_cred = cred, |
1da177e4 LT |
2602 | }; |
2603 | ||
2604 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, | |
963d8fe5 | 2605 | &nfs4_renew_ops, (void *)jiffies); |
1da177e4 LT |
2606 | } |
2607 | ||
adfa6f98 | 2608 | int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
2609 | { |
2610 | struct rpc_message msg = { | |
2611 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
2612 | .rpc_argp = clp, | |
b4454fe1 | 2613 | .rpc_cred = cred, |
1da177e4 LT |
2614 | }; |
2615 | unsigned long now = jiffies; | |
2616 | int status; | |
2617 | ||
2618 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
2619 | if (status < 0) | |
2620 | return status; | |
2621 | spin_lock(&clp->cl_lock); | |
2622 | if (time_before(clp->cl_last_renewal,now)) | |
2623 | clp->cl_last_renewal = now; | |
2624 | spin_unlock(&clp->cl_lock); | |
2625 | return 0; | |
2626 | } | |
2627 | ||
aa1870af BF |
2628 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
2629 | { | |
2630 | return (server->caps & NFS_CAP_ACLS) | |
2631 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
2632 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
2633 | } | |
2634 | ||
2635 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that | |
2636 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on | |
2637 | * the stack. | |
2638 | */ | |
2639 | #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT) | |
2640 | ||
2641 | static void buf_to_pages(const void *buf, size_t buflen, | |
2642 | struct page **pages, unsigned int *pgbase) | |
2643 | { | |
2644 | const void *p = buf; | |
2645 | ||
2646 | *pgbase = offset_in_page(buf); | |
2647 | p -= *pgbase; | |
2648 | while (p < buf + buflen) { | |
2649 | *(pages++) = virt_to_page(p); | |
2650 | p += PAGE_CACHE_SIZE; | |
2651 | } | |
2652 | } | |
2653 | ||
e50a1c2e BF |
2654 | struct nfs4_cached_acl { |
2655 | int cached; | |
2656 | size_t len; | |
3e9d4154 | 2657 | char data[0]; |
e50a1c2e BF |
2658 | }; |
2659 | ||
2660 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
2661 | { | |
2662 | struct nfs_inode *nfsi = NFS_I(inode); | |
2663 | ||
2664 | spin_lock(&inode->i_lock); | |
2665 | kfree(nfsi->nfs4_acl); | |
2666 | nfsi->nfs4_acl = acl; | |
2667 | spin_unlock(&inode->i_lock); | |
2668 | } | |
2669 | ||
2670 | static void nfs4_zap_acl_attr(struct inode *inode) | |
2671 | { | |
2672 | nfs4_set_cached_acl(inode, NULL); | |
2673 | } | |
2674 | ||
2675 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
2676 | { | |
2677 | struct nfs_inode *nfsi = NFS_I(inode); | |
2678 | struct nfs4_cached_acl *acl; | |
2679 | int ret = -ENOENT; | |
2680 | ||
2681 | spin_lock(&inode->i_lock); | |
2682 | acl = nfsi->nfs4_acl; | |
2683 | if (acl == NULL) | |
2684 | goto out; | |
2685 | if (buf == NULL) /* user is just asking for length */ | |
2686 | goto out_len; | |
2687 | if (acl->cached == 0) | |
2688 | goto out; | |
2689 | ret = -ERANGE; /* see getxattr(2) man page */ | |
2690 | if (acl->len > buflen) | |
2691 | goto out; | |
2692 | memcpy(buf, acl->data, acl->len); | |
2693 | out_len: | |
2694 | ret = acl->len; | |
2695 | out: | |
2696 | spin_unlock(&inode->i_lock); | |
2697 | return ret; | |
2698 | } | |
2699 | ||
2700 | static void nfs4_write_cached_acl(struct inode *inode, const char *buf, size_t acl_len) | |
2701 | { | |
2702 | struct nfs4_cached_acl *acl; | |
2703 | ||
2704 | if (buf && acl_len <= PAGE_SIZE) { | |
2705 | acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL); | |
2706 | if (acl == NULL) | |
2707 | goto out; | |
2708 | acl->cached = 1; | |
2709 | memcpy(acl->data, buf, acl_len); | |
2710 | } else { | |
2711 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
2712 | if (acl == NULL) | |
2713 | goto out; | |
2714 | acl->cached = 0; | |
2715 | } | |
2716 | acl->len = acl_len; | |
2717 | out: | |
2718 | nfs4_set_cached_acl(inode, acl); | |
2719 | } | |
2720 | ||
16b4289c | 2721 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 2722 | { |
aa1870af BF |
2723 | struct page *pages[NFS4ACL_MAXPAGES]; |
2724 | struct nfs_getaclargs args = { | |
2725 | .fh = NFS_FH(inode), | |
2726 | .acl_pages = pages, | |
2727 | .acl_len = buflen, | |
2728 | }; | |
2729 | size_t resp_len = buflen; | |
e50a1c2e | 2730 | void *resp_buf; |
aa1870af BF |
2731 | struct rpc_message msg = { |
2732 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
2733 | .rpc_argp = &args, | |
2734 | .rpc_resp = &resp_len, | |
2735 | }; | |
e50a1c2e | 2736 | struct page *localpage = NULL; |
aa1870af BF |
2737 | int ret; |
2738 | ||
e50a1c2e BF |
2739 | if (buflen < PAGE_SIZE) { |
2740 | /* As long as we're doing a round trip to the server anyway, | |
2741 | * let's be prepared for a page of acl data. */ | |
2742 | localpage = alloc_page(GFP_KERNEL); | |
2743 | resp_buf = page_address(localpage); | |
2744 | if (localpage == NULL) | |
2745 | return -ENOMEM; | |
2746 | args.acl_pages[0] = localpage; | |
2747 | args.acl_pgbase = 0; | |
1d95db8e | 2748 | resp_len = args.acl_len = PAGE_SIZE; |
e50a1c2e BF |
2749 | } else { |
2750 | resp_buf = buf; | |
2751 | buf_to_pages(buf, buflen, args.acl_pages, &args.acl_pgbase); | |
2752 | } | |
aa1870af | 2753 | ret = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
e50a1c2e BF |
2754 | if (ret) |
2755 | goto out_free; | |
2756 | if (resp_len > args.acl_len) | |
2757 | nfs4_write_cached_acl(inode, NULL, resp_len); | |
2758 | else | |
2759 | nfs4_write_cached_acl(inode, resp_buf, resp_len); | |
2760 | if (buf) { | |
2761 | ret = -ERANGE; | |
2762 | if (resp_len > buflen) | |
2763 | goto out_free; | |
2764 | if (localpage) | |
2765 | memcpy(buf, resp_buf, resp_len); | |
2766 | } | |
2767 | ret = resp_len; | |
2768 | out_free: | |
2769 | if (localpage) | |
2770 | __free_page(localpage); | |
aa1870af BF |
2771 | return ret; |
2772 | } | |
2773 | ||
16b4289c TM |
2774 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
2775 | { | |
2776 | struct nfs4_exception exception = { }; | |
2777 | ssize_t ret; | |
2778 | do { | |
2779 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
2780 | if (ret >= 0) | |
2781 | break; | |
2782 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
2783 | } while (exception.retry); | |
2784 | return ret; | |
2785 | } | |
2786 | ||
e50a1c2e BF |
2787 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
2788 | { | |
2789 | struct nfs_server *server = NFS_SERVER(inode); | |
2790 | int ret; | |
2791 | ||
2792 | if (!nfs4_server_supports_acls(server)) | |
2793 | return -EOPNOTSUPP; | |
2794 | ret = nfs_revalidate_inode(server, inode); | |
2795 | if (ret < 0) | |
2796 | return ret; | |
f41f7418 TM |
2797 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
2798 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
2799 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
2800 | if (ret != -ENOENT) | |
2801 | return ret; | |
2802 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
2803 | } | |
2804 | ||
16b4289c | 2805 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
2806 | { |
2807 | struct nfs_server *server = NFS_SERVER(inode); | |
2808 | struct page *pages[NFS4ACL_MAXPAGES]; | |
2809 | struct nfs_setaclargs arg = { | |
2810 | .fh = NFS_FH(inode), | |
2811 | .acl_pages = pages, | |
2812 | .acl_len = buflen, | |
2813 | }; | |
2814 | struct rpc_message msg = { | |
2815 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
2816 | .rpc_argp = &arg, | |
2817 | .rpc_resp = NULL, | |
2818 | }; | |
2819 | int ret; | |
2820 | ||
2821 | if (!nfs4_server_supports_acls(server)) | |
2822 | return -EOPNOTSUPP; | |
642ac549 | 2823 | nfs_inode_return_delegation(inode); |
4b580ee3 | 2824 | buf_to_pages(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
1f163415 | 2825 | ret = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
f41f7418 TM |
2826 | nfs_access_zap_cache(inode); |
2827 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
2828 | return ret; |
2829 | } | |
2830 | ||
16b4289c TM |
2831 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
2832 | { | |
2833 | struct nfs4_exception exception = { }; | |
2834 | int err; | |
2835 | do { | |
2836 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2837 | __nfs4_proc_set_acl(inode, buf, buflen), | |
2838 | &exception); | |
2839 | } while (exception.retry); | |
2840 | return err; | |
2841 | } | |
2842 | ||
1da177e4 | 2843 | static int |
faf5f49c | 2844 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server) |
1da177e4 | 2845 | { |
7539bbab | 2846 | struct nfs_client *clp = server->nfs_client; |
1da177e4 LT |
2847 | |
2848 | if (!clp || task->tk_status >= 0) | |
2849 | return 0; | |
2850 | switch(task->tk_status) { | |
2851 | case -NFS4ERR_STALE_CLIENTID: | |
2852 | case -NFS4ERR_STALE_STATEID: | |
2853 | case -NFS4ERR_EXPIRED: | |
5d00837b | 2854 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
1da177e4 | 2855 | nfs4_schedule_state_recovery(clp); |
433fbe4c | 2856 | if (test_bit(NFS4CLNT_STATE_RECOVER, &clp->cl_state) == 0) |
fda13939 | 2857 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); |
1da177e4 LT |
2858 | task->tk_status = 0; |
2859 | return -EAGAIN; | |
1da177e4 | 2860 | case -NFS4ERR_DELAY: |
2e96d286 | 2861 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 2862 | case -NFS4ERR_GRACE: |
1da177e4 LT |
2863 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
2864 | task->tk_status = 0; | |
2865 | return -EAGAIN; | |
2866 | case -NFS4ERR_OLD_STATEID: | |
2867 | task->tk_status = 0; | |
2868 | return -EAGAIN; | |
2869 | } | |
2870 | task->tk_status = nfs4_map_errors(task->tk_status); | |
2871 | return 0; | |
2872 | } | |
2873 | ||
adfa6f98 | 2874 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, unsigned short port, struct rpc_cred *cred) |
1da177e4 LT |
2875 | { |
2876 | nfs4_verifier sc_verifier; | |
2877 | struct nfs4_setclientid setclientid = { | |
2878 | .sc_verifier = &sc_verifier, | |
2879 | .sc_prog = program, | |
2880 | }; | |
2881 | struct rpc_message msg = { | |
2882 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
2883 | .rpc_argp = &setclientid, | |
2884 | .rpc_resp = clp, | |
286d7d6a | 2885 | .rpc_cred = cred, |
1da177e4 | 2886 | }; |
bc4785cd | 2887 | __be32 *p; |
1da177e4 LT |
2888 | int loop = 0; |
2889 | int status; | |
2890 | ||
bc4785cd | 2891 | p = (__be32*)sc_verifier.data; |
1da177e4 LT |
2892 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); |
2893 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
2894 | ||
2895 | for(;;) { | |
2896 | setclientid.sc_name_len = scnprintf(setclientid.sc_name, | |
69dd716c | 2897 | sizeof(setclientid.sc_name), "%s/%s %s %s %u", |
d4d3c507 CL |
2898 | clp->cl_ipaddr, |
2899 | rpc_peeraddr2str(clp->cl_rpcclient, | |
2900 | RPC_DISPLAY_ADDR), | |
69dd716c TM |
2901 | rpc_peeraddr2str(clp->cl_rpcclient, |
2902 | RPC_DISPLAY_PROTO), | |
78ea323b | 2903 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
1da177e4 LT |
2904 | clp->cl_id_uniquifier); |
2905 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, | |
d4d3c507 CL |
2906 | sizeof(setclientid.sc_netid), |
2907 | rpc_peeraddr2str(clp->cl_rpcclient, | |
2908 | RPC_DISPLAY_NETID)); | |
1da177e4 | 2909 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 2910 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
2911 | clp->cl_ipaddr, port >> 8, port & 255); |
2912 | ||
2913 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
2914 | if (status != -NFS4ERR_CLID_INUSE) | |
2915 | break; | |
2916 | if (signalled()) | |
2917 | break; | |
2918 | if (loop++ & 1) | |
2919 | ssleep(clp->cl_lease_time + 1); | |
2920 | else | |
2921 | if (++clp->cl_id_uniquifier == 0) | |
2922 | break; | |
2923 | } | |
2924 | return status; | |
2925 | } | |
2926 | ||
adfa6f98 | 2927 | static int _nfs4_proc_setclientid_confirm(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
2928 | { |
2929 | struct nfs_fsinfo fsinfo; | |
2930 | struct rpc_message msg = { | |
2931 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
2932 | .rpc_argp = clp, | |
2933 | .rpc_resp = &fsinfo, | |
286d7d6a | 2934 | .rpc_cred = cred, |
1da177e4 LT |
2935 | }; |
2936 | unsigned long now; | |
2937 | int status; | |
2938 | ||
2939 | now = jiffies; | |
2940 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
2941 | if (status == 0) { | |
2942 | spin_lock(&clp->cl_lock); | |
2943 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
2944 | clp->cl_last_renewal = now; | |
2945 | spin_unlock(&clp->cl_lock); | |
2946 | } | |
2947 | return status; | |
2948 | } | |
2949 | ||
adfa6f98 | 2950 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, struct rpc_cred *cred) |
51581f3b | 2951 | { |
77e03677 | 2952 | long timeout = 0; |
51581f3b TM |
2953 | int err; |
2954 | do { | |
2955 | err = _nfs4_proc_setclientid_confirm(clp, cred); | |
2956 | switch (err) { | |
2957 | case 0: | |
2958 | return err; | |
2959 | case -NFS4ERR_RESOURCE: | |
2960 | /* The IBM lawyers misread another document! */ | |
2961 | case -NFS4ERR_DELAY: | |
2962 | err = nfs4_delay(clp->cl_rpcclient, &timeout); | |
2963 | } | |
2964 | } while (err == 0); | |
2965 | return err; | |
2966 | } | |
2967 | ||
fe650407 TM |
2968 | struct nfs4_delegreturndata { |
2969 | struct nfs4_delegreturnargs args; | |
fa178f29 | 2970 | struct nfs4_delegreturnres res; |
fe650407 TM |
2971 | struct nfs_fh fh; |
2972 | nfs4_stateid stateid; | |
26e976a8 | 2973 | unsigned long timestamp; |
fa178f29 | 2974 | struct nfs_fattr fattr; |
fe650407 TM |
2975 | int rpc_status; |
2976 | }; | |
2977 | ||
fe650407 TM |
2978 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
2979 | { | |
2980 | struct nfs4_delegreturndata *data = calldata; | |
2981 | data->rpc_status = task->tk_status; | |
26e976a8 | 2982 | if (data->rpc_status == 0) |
fa178f29 | 2983 | renew_lease(data->res.server, data->timestamp); |
fe650407 TM |
2984 | } |
2985 | ||
2986 | static void nfs4_delegreturn_release(void *calldata) | |
2987 | { | |
fe650407 TM |
2988 | kfree(calldata); |
2989 | } | |
2990 | ||
c8d149f3 | 2991 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
fe650407 TM |
2992 | .rpc_call_done = nfs4_delegreturn_done, |
2993 | .rpc_release = nfs4_delegreturn_release, | |
2994 | }; | |
2995 | ||
e6f81075 | 2996 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
2997 | { |
2998 | struct nfs4_delegreturndata *data; | |
fa178f29 | 2999 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 3000 | struct rpc_task *task; |
5138fde0 TM |
3001 | struct rpc_message msg = { |
3002 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
3003 | .rpc_cred = cred, | |
3004 | }; | |
c970aa85 TM |
3005 | struct rpc_task_setup task_setup_data = { |
3006 | .rpc_client = server->client, | |
5138fde0 | 3007 | .rpc_message = &msg, |
c970aa85 TM |
3008 | .callback_ops = &nfs4_delegreturn_ops, |
3009 | .flags = RPC_TASK_ASYNC, | |
3010 | }; | |
e6f81075 | 3011 | int status = 0; |
fe650407 TM |
3012 | |
3013 | data = kmalloc(sizeof(*data), GFP_KERNEL); | |
3014 | if (data == NULL) | |
3015 | return -ENOMEM; | |
3016 | data->args.fhandle = &data->fh; | |
3017 | data->args.stateid = &data->stateid; | |
fa178f29 | 3018 | data->args.bitmask = server->attr_bitmask; |
fe650407 TM |
3019 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
3020 | memcpy(&data->stateid, stateid, sizeof(data->stateid)); | |
fa178f29 TM |
3021 | data->res.fattr = &data->fattr; |
3022 | data->res.server = server; | |
5138fde0 | 3023 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 3024 | data->timestamp = jiffies; |
fe650407 TM |
3025 | data->rpc_status = 0; |
3026 | ||
c970aa85 | 3027 | task_setup_data.callback_data = data; |
5138fde0 TM |
3028 | msg.rpc_argp = &data->args, |
3029 | msg.rpc_resp = &data->res, | |
c970aa85 | 3030 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 3031 | if (IS_ERR(task)) |
fe650407 | 3032 | return PTR_ERR(task); |
e6f81075 TM |
3033 | if (!issync) |
3034 | goto out; | |
fe650407 | 3035 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
3036 | if (status != 0) |
3037 | goto out; | |
3038 | status = data->rpc_status; | |
3039 | if (status != 0) | |
3040 | goto out; | |
3041 | nfs_refresh_inode(inode, &data->fattr); | |
3042 | out: | |
e6b3c4db | 3043 | rpc_put_task(task); |
fe650407 | 3044 | return status; |
1da177e4 LT |
3045 | } |
3046 | ||
e6f81075 | 3047 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
3048 | { |
3049 | struct nfs_server *server = NFS_SERVER(inode); | |
3050 | struct nfs4_exception exception = { }; | |
3051 | int err; | |
3052 | do { | |
e6f81075 | 3053 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
3054 | switch (err) { |
3055 | case -NFS4ERR_STALE_STATEID: | |
3056 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
3057 | case 0: |
3058 | return 0; | |
3059 | } | |
3060 | err = nfs4_handle_exception(server, err, &exception); | |
3061 | } while (exception.retry); | |
3062 | return err; | |
3063 | } | |
3064 | ||
3065 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
3066 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
3067 | ||
3068 | /* | |
3069 | * sleep, with exponential backoff, and retry the LOCK operation. | |
3070 | */ | |
3071 | static unsigned long | |
3072 | nfs4_set_lock_task_retry(unsigned long timeout) | |
3073 | { | |
150030b7 | 3074 | schedule_timeout_killable(timeout); |
1da177e4 LT |
3075 | timeout <<= 1; |
3076 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
3077 | return NFS4_LOCK_MAXTIMEOUT; | |
3078 | return timeout; | |
3079 | } | |
3080 | ||
1da177e4 LT |
3081 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
3082 | { | |
3083 | struct inode *inode = state->inode; | |
3084 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 3085 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 3086 | struct nfs_lockt_args arg = { |
1da177e4 | 3087 | .fh = NFS_FH(inode), |
911d1aaf | 3088 | .fl = request, |
1da177e4 | 3089 | }; |
911d1aaf TM |
3090 | struct nfs_lockt_res res = { |
3091 | .denied = request, | |
1da177e4 LT |
3092 | }; |
3093 | struct rpc_message msg = { | |
3094 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
3095 | .rpc_argp = &arg, | |
3096 | .rpc_resp = &res, | |
3097 | .rpc_cred = state->owner->so_cred, | |
3098 | }; | |
1da177e4 LT |
3099 | struct nfs4_lock_state *lsp; |
3100 | int status; | |
3101 | ||
3102 | down_read(&clp->cl_sem); | |
911d1aaf | 3103 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
3104 | status = nfs4_set_lock_state(state, request); |
3105 | if (status != 0) | |
3106 | goto out; | |
3107 | lsp = request->fl_u.nfs4_fl.owner; | |
9f958ab8 | 3108 | arg.lock_owner.id = lsp->ls_id.id; |
1da177e4 | 3109 | status = rpc_call_sync(server->client, &msg, 0); |
911d1aaf TM |
3110 | switch (status) { |
3111 | case 0: | |
3112 | request->fl_type = F_UNLCK; | |
3113 | break; | |
3114 | case -NFS4ERR_DENIED: | |
3115 | status = 0; | |
1da177e4 | 3116 | } |
70cc6487 | 3117 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 3118 | out: |
1da177e4 LT |
3119 | up_read(&clp->cl_sem); |
3120 | return status; | |
3121 | } | |
3122 | ||
3123 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
3124 | { | |
3125 | struct nfs4_exception exception = { }; | |
3126 | int err; | |
3127 | ||
3128 | do { | |
3129 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
3130 | _nfs4_proc_getlk(state, cmd, request), | |
3131 | &exception); | |
3132 | } while (exception.retry); | |
3133 | return err; | |
3134 | } | |
3135 | ||
3136 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
3137 | { | |
3138 | int res = 0; | |
3139 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
3140 | case FL_POSIX: | |
3141 | res = posix_lock_file_wait(file, fl); | |
3142 | break; | |
3143 | case FL_FLOCK: | |
3144 | res = flock_lock_file_wait(file, fl); | |
3145 | break; | |
3146 | default: | |
3147 | BUG(); | |
3148 | } | |
1da177e4 LT |
3149 | return res; |
3150 | } | |
3151 | ||
faf5f49c | 3152 | struct nfs4_unlockdata { |
911d1aaf TM |
3153 | struct nfs_locku_args arg; |
3154 | struct nfs_locku_res res; | |
faf5f49c TM |
3155 | struct nfs4_lock_state *lsp; |
3156 | struct nfs_open_context *ctx; | |
911d1aaf TM |
3157 | struct file_lock fl; |
3158 | const struct nfs_server *server; | |
26e976a8 | 3159 | unsigned long timestamp; |
faf5f49c TM |
3160 | }; |
3161 | ||
911d1aaf TM |
3162 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
3163 | struct nfs_open_context *ctx, | |
3164 | struct nfs4_lock_state *lsp, | |
3165 | struct nfs_seqid *seqid) | |
3166 | { | |
3167 | struct nfs4_unlockdata *p; | |
3168 | struct inode *inode = lsp->ls_state->inode; | |
3169 | ||
3170 | p = kmalloc(sizeof(*p), GFP_KERNEL); | |
3171 | if (p == NULL) | |
3172 | return NULL; | |
3173 | p->arg.fh = NFS_FH(inode); | |
3174 | p->arg.fl = &p->fl; | |
3175 | p->arg.seqid = seqid; | |
c1d51931 | 3176 | p->res.seqid = seqid; |
911d1aaf TM |
3177 | p->arg.stateid = &lsp->ls_stateid; |
3178 | p->lsp = lsp; | |
3179 | atomic_inc(&lsp->ls_count); | |
3180 | /* Ensure we don't close file until we're done freeing locks! */ | |
3181 | p->ctx = get_nfs_open_context(ctx); | |
3182 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
3183 | p->server = NFS_SERVER(inode); | |
3184 | return p; | |
3185 | } | |
3186 | ||
06f814a3 | 3187 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 3188 | { |
963d8fe5 | 3189 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 3190 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
3191 | nfs4_put_lock_state(calldata->lsp); |
3192 | put_nfs_open_context(calldata->ctx); | |
3193 | kfree(calldata); | |
faf5f49c TM |
3194 | } |
3195 | ||
963d8fe5 | 3196 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 3197 | { |
963d8fe5 | 3198 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 3199 | |
06f814a3 TM |
3200 | if (RPC_ASSASSINATED(task)) |
3201 | return; | |
faf5f49c TM |
3202 | switch (task->tk_status) { |
3203 | case 0: | |
3204 | memcpy(calldata->lsp->ls_stateid.data, | |
911d1aaf | 3205 | calldata->res.stateid.data, |
faf5f49c | 3206 | sizeof(calldata->lsp->ls_stateid.data)); |
26e976a8 | 3207 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c TM |
3208 | break; |
3209 | case -NFS4ERR_STALE_STATEID: | |
3210 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
3211 | break; |
3212 | default: | |
a6a352e9 | 3213 | if (nfs4_async_handle_error(task, calldata->server) == -EAGAIN) |
faf5f49c | 3214 | rpc_restart_call(task); |
faf5f49c | 3215 | } |
faf5f49c TM |
3216 | } |
3217 | ||
4ce70ada | 3218 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 3219 | { |
4ce70ada | 3220 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 3221 | |
911d1aaf | 3222 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c TM |
3223 | return; |
3224 | if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) { | |
963d8fe5 TM |
3225 | /* Note: exit _without_ running nfs4_locku_done */ |
3226 | task->tk_action = NULL; | |
faf5f49c TM |
3227 | return; |
3228 | } | |
26e976a8 | 3229 | calldata->timestamp = jiffies; |
5138fde0 | 3230 | rpc_call_start(task); |
faf5f49c TM |
3231 | } |
3232 | ||
963d8fe5 | 3233 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 3234 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 3235 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 3236 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
3237 | }; |
3238 | ||
a5d16a4d TM |
3239 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
3240 | struct nfs_open_context *ctx, | |
3241 | struct nfs4_lock_state *lsp, | |
3242 | struct nfs_seqid *seqid) | |
3243 | { | |
3244 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
3245 | struct rpc_message msg = { |
3246 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
3247 | .rpc_cred = ctx->cred, | |
3248 | }; | |
c970aa85 TM |
3249 | struct rpc_task_setup task_setup_data = { |
3250 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 3251 | .rpc_message = &msg, |
c970aa85 | 3252 | .callback_ops = &nfs4_locku_ops, |
101070ca | 3253 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
3254 | .flags = RPC_TASK_ASYNC, |
3255 | }; | |
a5d16a4d | 3256 | |
137d6aca FF |
3257 | /* Ensure this is an unlock - when canceling a lock, the |
3258 | * canceled lock is passed in, and it won't be an unlock. | |
3259 | */ | |
3260 | fl->fl_type = F_UNLCK; | |
3261 | ||
a5d16a4d TM |
3262 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
3263 | if (data == NULL) { | |
3264 | nfs_free_seqid(seqid); | |
3265 | return ERR_PTR(-ENOMEM); | |
3266 | } | |
3267 | ||
5138fde0 TM |
3268 | msg.rpc_argp = &data->arg, |
3269 | msg.rpc_resp = &data->res, | |
c970aa85 TM |
3270 | task_setup_data.callback_data = data; |
3271 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
3272 | } |
3273 | ||
faf5f49c TM |
3274 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
3275 | { | |
19e03c57 TM |
3276 | struct nfs_client *clp = state->owner->so_client; |
3277 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
911d1aaf | 3278 | struct nfs_seqid *seqid; |
1da177e4 | 3279 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
3280 | struct rpc_task *task; |
3281 | int status = 0; | |
536ff0f8 | 3282 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 3283 | |
8d0a8a9d | 3284 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
3285 | /* Unlock _before_ we do the RPC call */ |
3286 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
3287 | down_read(&clp->cl_sem); |
3288 | down_read(&nfsi->rwsem); | |
3289 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
3290 | up_read(&nfsi->rwsem); | |
3291 | up_read(&clp->cl_sem); | |
9b073574 | 3292 | goto out; |
19e03c57 TM |
3293 | } |
3294 | up_read(&nfsi->rwsem); | |
3295 | up_read(&clp->cl_sem); | |
8d0a8a9d | 3296 | if (status != 0) |
9b073574 TM |
3297 | goto out; |
3298 | /* Is this a delegated lock? */ | |
3299 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
3300 | goto out; | |
8d0a8a9d | 3301 | lsp = request->fl_u.nfs4_fl.owner; |
911d1aaf | 3302 | seqid = nfs_alloc_seqid(&lsp->ls_seqid); |
9b073574 | 3303 | status = -ENOMEM; |
911d1aaf | 3304 | if (seqid == NULL) |
9b073574 | 3305 | goto out; |
cd3758e3 | 3306 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
3307 | status = PTR_ERR(task); |
3308 | if (IS_ERR(task)) | |
9b073574 | 3309 | goto out; |
a5d16a4d | 3310 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 3311 | rpc_put_task(task); |
9b073574 | 3312 | out: |
536ff0f8 | 3313 | request->fl_flags = fl_flags; |
1da177e4 LT |
3314 | return status; |
3315 | } | |
3316 | ||
a5d16a4d TM |
3317 | struct nfs4_lockdata { |
3318 | struct nfs_lock_args arg; | |
3319 | struct nfs_lock_res res; | |
3320 | struct nfs4_lock_state *lsp; | |
3321 | struct nfs_open_context *ctx; | |
3322 | struct file_lock fl; | |
26e976a8 | 3323 | unsigned long timestamp; |
a5d16a4d TM |
3324 | int rpc_status; |
3325 | int cancelled; | |
3326 | }; | |
3327 | ||
3328 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
3329 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp) | |
1da177e4 | 3330 | { |
a5d16a4d TM |
3331 | struct nfs4_lockdata *p; |
3332 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 3333 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d TM |
3334 | |
3335 | p = kzalloc(sizeof(*p), GFP_KERNEL); | |
3336 | if (p == NULL) | |
3337 | return NULL; | |
3338 | ||
3339 | p->arg.fh = NFS_FH(inode); | |
3340 | p->arg.fl = &p->fl; | |
2f74c0a0 TM |
3341 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid); |
3342 | if (p->arg.open_seqid == NULL) | |
3343 | goto out_free; | |
a5d16a4d TM |
3344 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid); |
3345 | if (p->arg.lock_seqid == NULL) | |
2f74c0a0 | 3346 | goto out_free_seqid; |
a5d16a4d | 3347 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 3348 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 3349 | p->arg.lock_owner.id = lsp->ls_id.id; |
c1d51931 | 3350 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d TM |
3351 | p->lsp = lsp; |
3352 | atomic_inc(&lsp->ls_count); | |
3353 | p->ctx = get_nfs_open_context(ctx); | |
3354 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
3355 | return p; | |
2f74c0a0 TM |
3356 | out_free_seqid: |
3357 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
3358 | out_free: |
3359 | kfree(p); | |
3360 | return NULL; | |
3361 | } | |
3362 | ||
3363 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
3364 | { | |
3365 | struct nfs4_lockdata *data = calldata; | |
3366 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 3367 | |
3110ff80 | 3368 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
3369 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
3370 | return; | |
a5d16a4d TM |
3371 | /* Do we need to do an open_to_lock_owner? */ |
3372 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 TM |
3373 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
3374 | return; | |
a5d16a4d TM |
3375 | data->arg.open_stateid = &state->stateid; |
3376 | data->arg.new_lock_owner = 1; | |
c1d51931 | 3377 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
3378 | } else |
3379 | data->arg.new_lock_owner = 0; | |
26e976a8 | 3380 | data->timestamp = jiffies; |
5138fde0 | 3381 | rpc_call_start(task); |
3110ff80 | 3382 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
a5d16a4d TM |
3383 | } |
3384 | ||
3385 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) | |
3386 | { | |
3387 | struct nfs4_lockdata *data = calldata; | |
3388 | ||
3110ff80 | 3389 | dprintk("%s: begin!\n", __func__); |
a5d16a4d TM |
3390 | |
3391 | data->rpc_status = task->tk_status; | |
3392 | if (RPC_ASSASSINATED(task)) | |
3393 | goto out; | |
3394 | if (data->arg.new_lock_owner != 0) { | |
a5d16a4d TM |
3395 | if (data->rpc_status == 0) |
3396 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
3397 | else | |
3398 | goto out; | |
3399 | } | |
3400 | if (data->rpc_status == 0) { | |
3401 | memcpy(data->lsp->ls_stateid.data, data->res.stateid.data, | |
3402 | sizeof(data->lsp->ls_stateid.data)); | |
3403 | data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; | |
88be9f99 | 3404 | renew_lease(NFS_SERVER(data->ctx->path.dentry->d_inode), data->timestamp); |
a5d16a4d | 3405 | } |
a5d16a4d | 3406 | out: |
3110ff80 | 3407 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
3408 | } |
3409 | ||
3410 | static void nfs4_lock_release(void *calldata) | |
3411 | { | |
3412 | struct nfs4_lockdata *data = calldata; | |
3413 | ||
3110ff80 | 3414 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 3415 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
3416 | if (data->cancelled != 0) { |
3417 | struct rpc_task *task; | |
3418 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
3419 | data->arg.lock_seqid); | |
3420 | if (!IS_ERR(task)) | |
e6b3c4db | 3421 | rpc_put_task(task); |
3110ff80 | 3422 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
3423 | } else |
3424 | nfs_free_seqid(data->arg.lock_seqid); | |
3425 | nfs4_put_lock_state(data->lsp); | |
3426 | put_nfs_open_context(data->ctx); | |
3427 | kfree(data); | |
3110ff80 | 3428 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
3429 | } |
3430 | ||
3431 | static const struct rpc_call_ops nfs4_lock_ops = { | |
3432 | .rpc_call_prepare = nfs4_lock_prepare, | |
3433 | .rpc_call_done = nfs4_lock_done, | |
3434 | .rpc_release = nfs4_lock_release, | |
3435 | }; | |
3436 | ||
3437 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int reclaim) | |
3438 | { | |
3439 | struct nfs4_lockdata *data; | |
3440 | struct rpc_task *task; | |
5138fde0 TM |
3441 | struct rpc_message msg = { |
3442 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
3443 | .rpc_cred = state->owner->so_cred, | |
3444 | }; | |
c970aa85 TM |
3445 | struct rpc_task_setup task_setup_data = { |
3446 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 3447 | .rpc_message = &msg, |
c970aa85 | 3448 | .callback_ops = &nfs4_lock_ops, |
101070ca | 3449 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
3450 | .flags = RPC_TASK_ASYNC, |
3451 | }; | |
a5d16a4d TM |
3452 | int ret; |
3453 | ||
3110ff80 | 3454 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 3455 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
a5d16a4d TM |
3456 | fl->fl_u.nfs4_fl.owner); |
3457 | if (data == NULL) | |
3458 | return -ENOMEM; | |
3459 | if (IS_SETLKW(cmd)) | |
3460 | data->arg.block = 1; | |
3461 | if (reclaim != 0) | |
3462 | data->arg.reclaim = 1; | |
5138fde0 TM |
3463 | msg.rpc_argp = &data->arg, |
3464 | msg.rpc_resp = &data->res, | |
c970aa85 TM |
3465 | task_setup_data.callback_data = data; |
3466 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 3467 | if (IS_ERR(task)) |
a5d16a4d | 3468 | return PTR_ERR(task); |
a5d16a4d TM |
3469 | ret = nfs4_wait_for_completion_rpc_task(task); |
3470 | if (ret == 0) { | |
3471 | ret = data->rpc_status; | |
3472 | if (ret == -NFS4ERR_DENIED) | |
3473 | ret = -EAGAIN; | |
3474 | } else | |
3475 | data->cancelled = 1; | |
e6b3c4db | 3476 | rpc_put_task(task); |
3110ff80 | 3477 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 3478 | return ret; |
1da177e4 LT |
3479 | } |
3480 | ||
3481 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
3482 | { | |
202b50dc TM |
3483 | struct nfs_server *server = NFS_SERVER(state->inode); |
3484 | struct nfs4_exception exception = { }; | |
3485 | int err; | |
3486 | ||
3487 | do { | |
42a2d13e TM |
3488 | /* Cache the lock if possible... */ |
3489 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
3490 | return 0; | |
202b50dc TM |
3491 | err = _nfs4_do_setlk(state, F_SETLK, request, 1); |
3492 | if (err != -NFS4ERR_DELAY) | |
3493 | break; | |
3494 | nfs4_handle_exception(server, err, &exception); | |
3495 | } while (exception.retry); | |
3496 | return err; | |
1da177e4 LT |
3497 | } |
3498 | ||
3499 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
3500 | { | |
202b50dc TM |
3501 | struct nfs_server *server = NFS_SERVER(state->inode); |
3502 | struct nfs4_exception exception = { }; | |
3503 | int err; | |
3504 | ||
6bfc93ef TM |
3505 | err = nfs4_set_lock_state(state, request); |
3506 | if (err != 0) | |
3507 | return err; | |
202b50dc | 3508 | do { |
42a2d13e TM |
3509 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
3510 | return 0; | |
202b50dc TM |
3511 | err = _nfs4_do_setlk(state, F_SETLK, request, 0); |
3512 | if (err != -NFS4ERR_DELAY) | |
3513 | break; | |
3514 | nfs4_handle_exception(server, err, &exception); | |
3515 | } while (exception.retry); | |
3516 | return err; | |
1da177e4 LT |
3517 | } |
3518 | ||
3519 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
3520 | { | |
adfa6f98 | 3521 | struct nfs_client *clp = state->owner->so_client; |
19e03c57 | 3522 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 3523 | unsigned char fl_flags = request->fl_flags; |
1da177e4 LT |
3524 | int status; |
3525 | ||
6bfc93ef | 3526 | /* Is this a delegated open? */ |
6bfc93ef TM |
3527 | status = nfs4_set_lock_state(state, request); |
3528 | if (status != 0) | |
3529 | goto out; | |
01c3b861 TM |
3530 | request->fl_flags |= FL_ACCESS; |
3531 | status = do_vfs_lock(request->fl_file, request); | |
3532 | if (status < 0) | |
3533 | goto out; | |
3534 | down_read(&clp->cl_sem); | |
19e03c57 | 3535 | down_read(&nfsi->rwsem); |
01c3b861 | 3536 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 3537 | /* Yes: cache locks! */ |
01c3b861 | 3538 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
3539 | request->fl_flags = fl_flags & ~FL_SLEEP; |
3540 | status = do_vfs_lock(request->fl_file, request); | |
3541 | goto out_unlock; | |
01c3b861 | 3542 | } |
6bfc93ef TM |
3543 | status = _nfs4_do_setlk(state, cmd, request, 0); |
3544 | if (status != 0) | |
01c3b861 | 3545 | goto out_unlock; |
6bfc93ef | 3546 | /* Note: we always want to sleep here! */ |
01c3b861 | 3547 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 3548 | if (do_vfs_lock(request->fl_file, request) < 0) |
3110ff80 | 3549 | printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __func__); |
01c3b861 | 3550 | out_unlock: |
19e03c57 | 3551 | up_read(&nfsi->rwsem); |
1da177e4 | 3552 | up_read(&clp->cl_sem); |
01c3b861 TM |
3553 | out: |
3554 | request->fl_flags = fl_flags; | |
1da177e4 LT |
3555 | return status; |
3556 | } | |
3557 | ||
3558 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
3559 | { | |
3560 | struct nfs4_exception exception = { }; | |
3561 | int err; | |
3562 | ||
3563 | do { | |
3564 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
3565 | _nfs4_proc_setlk(state, cmd, request), | |
3566 | &exception); | |
3567 | } while (exception.retry); | |
3568 | return err; | |
3569 | } | |
3570 | ||
3571 | static int | |
3572 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
3573 | { | |
3574 | struct nfs_open_context *ctx; | |
3575 | struct nfs4_state *state; | |
3576 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
3577 | int status; | |
3578 | ||
3579 | /* verify open state */ | |
cd3758e3 | 3580 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
3581 | state = ctx->state; |
3582 | ||
3583 | if (request->fl_start < 0 || request->fl_end < 0) | |
3584 | return -EINVAL; | |
3585 | ||
3586 | if (IS_GETLK(cmd)) | |
3587 | return nfs4_proc_getlk(state, F_GETLK, request); | |
3588 | ||
3589 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
3590 | return -EINVAL; | |
3591 | ||
3592 | if (request->fl_type == F_UNLCK) | |
3593 | return nfs4_proc_unlck(state, cmd, request); | |
3594 | ||
3595 | do { | |
3596 | status = nfs4_proc_setlk(state, cmd, request); | |
3597 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
3598 | break; | |
3599 | timeout = nfs4_set_lock_task_retry(timeout); | |
3600 | status = -ERESTARTSYS; | |
3601 | if (signalled()) | |
3602 | break; | |
3603 | } while(status < 0); | |
1da177e4 LT |
3604 | return status; |
3605 | } | |
3606 | ||
888e694c TM |
3607 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
3608 | { | |
3609 | struct nfs_server *server = NFS_SERVER(state->inode); | |
3610 | struct nfs4_exception exception = { }; | |
3611 | int err; | |
3612 | ||
3613 | err = nfs4_set_lock_state(state, fl); | |
3614 | if (err != 0) | |
3615 | goto out; | |
3616 | do { | |
3617 | err = _nfs4_do_setlk(state, F_SETLK, fl, 0); | |
3618 | if (err != -NFS4ERR_DELAY) | |
3619 | break; | |
3620 | err = nfs4_handle_exception(server, err, &exception); | |
3621 | } while (exception.retry); | |
3622 | out: | |
3623 | return err; | |
3624 | } | |
6b3b5496 | 3625 | |
aa1870af BF |
3626 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
3627 | ||
6b3b5496 BF |
3628 | int nfs4_setxattr(struct dentry *dentry, const char *key, const void *buf, |
3629 | size_t buflen, int flags) | |
3630 | { | |
4b580ee3 BF |
3631 | struct inode *inode = dentry->d_inode; |
3632 | ||
3633 | if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0) | |
3634 | return -EOPNOTSUPP; | |
3635 | ||
4b580ee3 | 3636 | return nfs4_proc_set_acl(inode, buf, buflen); |
6b3b5496 BF |
3637 | } |
3638 | ||
3639 | /* The getxattr man page suggests returning -ENODATA for unknown attributes, | |
3640 | * and that's what we'll do for e.g. user attributes that haven't been set. | |
3641 | * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported | |
3642 | * attributes in kernel-managed attribute namespaces. */ | |
3643 | ssize_t nfs4_getxattr(struct dentry *dentry, const char *key, void *buf, | |
3644 | size_t buflen) | |
3645 | { | |
aa1870af BF |
3646 | struct inode *inode = dentry->d_inode; |
3647 | ||
3648 | if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0) | |
3649 | return -EOPNOTSUPP; | |
3650 | ||
3651 | return nfs4_proc_get_acl(inode, buf, buflen); | |
6b3b5496 BF |
3652 | } |
3653 | ||
3654 | ssize_t nfs4_listxattr(struct dentry *dentry, char *buf, size_t buflen) | |
3655 | { | |
aa1870af | 3656 | size_t len = strlen(XATTR_NAME_NFSV4_ACL) + 1; |
6b3b5496 | 3657 | |
096455a2 BF |
3658 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
3659 | return 0; | |
6b3b5496 BF |
3660 | if (buf && buflen < len) |
3661 | return -ERANGE; | |
3662 | if (buf) | |
aa1870af BF |
3663 | memcpy(buf, XATTR_NAME_NFSV4_ACL, len); |
3664 | return len; | |
6b3b5496 BF |
3665 | } |
3666 | ||
56659e99 | 3667 | int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, |
7aaa0b3b | 3668 | struct nfs4_fs_locations *fs_locations, struct page *page) |
683b57b4 TM |
3669 | { |
3670 | struct nfs_server *server = NFS_SERVER(dir); | |
3671 | u32 bitmask[2] = { | |
361e624f MN |
3672 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
3673 | [1] = FATTR4_WORD1_MOUNTED_ON_FILEID, | |
683b57b4 TM |
3674 | }; |
3675 | struct nfs4_fs_locations_arg args = { | |
3676 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 3677 | .name = name, |
683b57b4 TM |
3678 | .page = page, |
3679 | .bitmask = bitmask, | |
3680 | }; | |
3681 | struct rpc_message msg = { | |
3682 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
3683 | .rpc_argp = &args, | |
7aaa0b3b | 3684 | .rpc_resp = fs_locations, |
683b57b4 TM |
3685 | }; |
3686 | int status; | |
3687 | ||
3110ff80 | 3688 | dprintk("%s: start\n", __func__); |
c228fd3a | 3689 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 3690 | fs_locations->server = server; |
830b8e33 | 3691 | fs_locations->nlocations = 0; |
683b57b4 | 3692 | status = rpc_call_sync(server->client, &msg, 0); |
3110ff80 | 3693 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
3694 | return status; |
3695 | } | |
3696 | ||
1da177e4 | 3697 | struct nfs4_state_recovery_ops nfs4_reboot_recovery_ops = { |
7eff03ae | 3698 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 3699 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
3700 | .recover_open = nfs4_open_reclaim, |
3701 | .recover_lock = nfs4_lock_reclaim, | |
3702 | }; | |
3703 | ||
b79a4a1b | 3704 | struct nfs4_state_recovery_ops nfs4_nograce_recovery_ops = { |
7eff03ae | 3705 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 3706 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
1da177e4 LT |
3707 | .recover_open = nfs4_open_expired, |
3708 | .recover_lock = nfs4_lock_expired, | |
3709 | }; | |
3710 | ||
92e1d5be | 3711 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
3712 | .permission = nfs_permission, |
3713 | .getattr = nfs_getattr, | |
3714 | .setattr = nfs_setattr, | |
3715 | .getxattr = nfs4_getxattr, | |
3716 | .setxattr = nfs4_setxattr, | |
3717 | .listxattr = nfs4_listxattr, | |
3718 | }; | |
3719 | ||
509de811 | 3720 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
3721 | .version = 4, /* protocol version */ |
3722 | .dentry_ops = &nfs4_dentry_operations, | |
3723 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 3724 | .file_inode_ops = &nfs4_file_inode_operations, |
1da177e4 LT |
3725 | .getroot = nfs4_proc_get_root, |
3726 | .getattr = nfs4_proc_getattr, | |
3727 | .setattr = nfs4_proc_setattr, | |
2b3de441 | 3728 | .lookupfh = nfs4_proc_lookupfh, |
1da177e4 LT |
3729 | .lookup = nfs4_proc_lookup, |
3730 | .access = nfs4_proc_access, | |
3731 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
3732 | .create = nfs4_proc_create, |
3733 | .remove = nfs4_proc_remove, | |
3734 | .unlink_setup = nfs4_proc_unlink_setup, | |
3735 | .unlink_done = nfs4_proc_unlink_done, | |
3736 | .rename = nfs4_proc_rename, | |
3737 | .link = nfs4_proc_link, | |
3738 | .symlink = nfs4_proc_symlink, | |
3739 | .mkdir = nfs4_proc_mkdir, | |
3740 | .rmdir = nfs4_proc_remove, | |
3741 | .readdir = nfs4_proc_readdir, | |
3742 | .mknod = nfs4_proc_mknod, | |
3743 | .statfs = nfs4_proc_statfs, | |
3744 | .fsinfo = nfs4_proc_fsinfo, | |
3745 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 3746 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
3747 | .decode_dirent = nfs4_decode_dirent, |
3748 | .read_setup = nfs4_proc_read_setup, | |
ec06c096 | 3749 | .read_done = nfs4_read_done, |
1da177e4 | 3750 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 3751 | .write_done = nfs4_write_done, |
1da177e4 | 3752 | .commit_setup = nfs4_proc_commit_setup, |
788e7a89 | 3753 | .commit_done = nfs4_commit_done, |
1da177e4 | 3754 | .lock = nfs4_proc_lock, |
e50a1c2e | 3755 | .clear_acl_cache = nfs4_zap_acl_attr, |
1da177e4 LT |
3756 | }; |
3757 | ||
3758 | /* | |
3759 | * Local variables: | |
3760 | * c-basic-offset: 8 | |
3761 | * End: | |
3762 | */ |