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> | |
1da177e4 LT |
39 | #include <linux/delay.h> |
40 | #include <linux/errno.h> | |
41 | #include <linux/string.h> | |
652f89f6 TM |
42 | #include <linux/ratelimit.h> |
43 | #include <linux/printk.h> | |
5a0e3ad6 | 44 | #include <linux/slab.h> |
1da177e4 LT |
45 | #include <linux/sunrpc/clnt.h> |
46 | #include <linux/nfs.h> | |
47 | #include <linux/nfs4.h> | |
48 | #include <linux/nfs_fs.h> | |
49 | #include <linux/nfs_page.h> | |
9b7160c5 | 50 | #include <linux/nfs_mount.h> |
1da177e4 | 51 | #include <linux/namei.h> |
02a913a7 | 52 | #include <linux/mount.h> |
99fe60d0 | 53 | #include <linux/module.h> |
6926afd1 | 54 | #include <linux/nfs_idmap.h> |
64c2ce8b | 55 | #include <linux/xattr.h> |
c7a360b0 | 56 | #include <linux/utsname.h> |
d310310c | 57 | #include <linux/freezer.h> |
1da177e4 | 58 | |
4ce79717 | 59 | #include "nfs4_fs.h" |
1da177e4 | 60 | #include "delegation.h" |
101070ca | 61 | #include "internal.h" |
006ea73e | 62 | #include "iostat.h" |
fc931582 | 63 | #include "callback.h" |
b1f69b75 | 64 | #include "pnfs.h" |
f092075d | 65 | #include "netns.h" |
73e39aaa TM |
66 | #include "nfs4session.h" |
67 | ||
1da177e4 LT |
68 | |
69 | #define NFSDBG_FACILITY NFSDBG_PROC | |
70 | ||
2066fe89 | 71 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
72 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
73 | ||
cdd4e68b | 74 | struct nfs4_opendata; |
864472e9 | 75 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
b257957e | 76 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data); |
1da177e4 | 77 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
9e33bed5 | 78 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *); |
81934ddb | 79 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); |
bae36241 | 80 | static int nfs4_proc_getattr(struct nfs_server *, struct nfs_fh *, struct nfs_fattr *); |
9936781d | 81 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr); |
0ab64e0e TM |
82 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
83 | struct nfs_fattr *fattr, struct iattr *sattr, | |
84 | struct nfs4_state *state); | |
f062eb6c | 85 | #ifdef CONFIG_NFS_V4_1 |
1cab0652 BS |
86 | static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *); |
87 | static int nfs41_free_stateid(struct nfs_server *, nfs4_stateid *); | |
f062eb6c | 88 | #endif |
1da177e4 | 89 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 90 | static int nfs4_map_errors(int err) |
1da177e4 | 91 | { |
52567b03 TM |
92 | if (err >= -1000) |
93 | return err; | |
94 | switch (err) { | |
95 | case -NFS4ERR_RESOURCE: | |
96 | return -EREMOTEIO; | |
7ebb9315 BS |
97 | case -NFS4ERR_WRONGSEC: |
98 | return -EPERM; | |
3ddeb7c5 TM |
99 | case -NFS4ERR_BADOWNER: |
100 | case -NFS4ERR_BADNAME: | |
101 | return -EINVAL; | |
fb13bfa7 TM |
102 | case -NFS4ERR_SHARE_DENIED: |
103 | return -EACCES; | |
f25efd85 SD |
104 | case -NFS4ERR_MINOR_VERS_MISMATCH: |
105 | return -EPROTONOSUPPORT; | |
6168f62c WAA |
106 | case -NFS4ERR_ACCESS: |
107 | return -EACCES; | |
52567b03 | 108 | default: |
1da177e4 | 109 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 110 | __func__, -err); |
52567b03 | 111 | break; |
1da177e4 | 112 | } |
52567b03 | 113 | return -EIO; |
1da177e4 LT |
114 | } |
115 | ||
116 | /* | |
117 | * This is our standard bitmap for GETATTR requests. | |
118 | */ | |
1549210f | 119 | const u32 nfs4_fattr_bitmap[3] = { |
1da177e4 LT |
120 | FATTR4_WORD0_TYPE |
121 | | FATTR4_WORD0_CHANGE | |
122 | | FATTR4_WORD0_SIZE | |
123 | | FATTR4_WORD0_FSID | |
124 | | FATTR4_WORD0_FILEID, | |
125 | FATTR4_WORD1_MODE | |
126 | | FATTR4_WORD1_NUMLINKS | |
127 | | FATTR4_WORD1_OWNER | |
128 | | FATTR4_WORD1_OWNER_GROUP | |
129 | | FATTR4_WORD1_RAWDEV | |
130 | | FATTR4_WORD1_SPACE_USED | |
131 | | FATTR4_WORD1_TIME_ACCESS | |
132 | | FATTR4_WORD1_TIME_METADATA | |
133 | | FATTR4_WORD1_TIME_MODIFY | |
134 | }; | |
135 | ||
1549210f TM |
136 | static const u32 nfs4_pnfs_open_bitmap[3] = { |
137 | FATTR4_WORD0_TYPE | |
138 | | FATTR4_WORD0_CHANGE | |
139 | | FATTR4_WORD0_SIZE | |
140 | | FATTR4_WORD0_FSID | |
141 | | FATTR4_WORD0_FILEID, | |
142 | FATTR4_WORD1_MODE | |
143 | | FATTR4_WORD1_NUMLINKS | |
144 | | FATTR4_WORD1_OWNER | |
145 | | FATTR4_WORD1_OWNER_GROUP | |
146 | | FATTR4_WORD1_RAWDEV | |
147 | | FATTR4_WORD1_SPACE_USED | |
148 | | FATTR4_WORD1_TIME_ACCESS | |
149 | | FATTR4_WORD1_TIME_METADATA | |
150 | | FATTR4_WORD1_TIME_MODIFY, | |
151 | FATTR4_WORD2_MDSTHRESHOLD | |
152 | }; | |
153 | ||
e23008ec AA |
154 | static const u32 nfs4_open_noattr_bitmap[3] = { |
155 | FATTR4_WORD0_TYPE | |
156 | | FATTR4_WORD0_CHANGE | |
157 | | FATTR4_WORD0_FILEID, | |
158 | }; | |
159 | ||
1da177e4 LT |
160 | const u32 nfs4_statfs_bitmap[2] = { |
161 | FATTR4_WORD0_FILES_AVAIL | |
162 | | FATTR4_WORD0_FILES_FREE | |
163 | | FATTR4_WORD0_FILES_TOTAL, | |
164 | FATTR4_WORD1_SPACE_AVAIL | |
165 | | FATTR4_WORD1_SPACE_FREE | |
166 | | FATTR4_WORD1_SPACE_TOTAL | |
167 | }; | |
168 | ||
4ce79717 | 169 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
170 | FATTR4_WORD0_MAXLINK |
171 | | FATTR4_WORD0_MAXNAME, | |
172 | 0 | |
173 | }; | |
174 | ||
dae100c2 | 175 | const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE |
1da177e4 LT |
176 | | FATTR4_WORD0_MAXREAD |
177 | | FATTR4_WORD0_MAXWRITE | |
178 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 179 | FATTR4_WORD1_TIME_DELTA |
dae100c2 FI |
180 | | FATTR4_WORD1_FS_LAYOUT_TYPES, |
181 | FATTR4_WORD2_LAYOUT_BLKSIZE | |
1da177e4 LT |
182 | }; |
183 | ||
830b8e33 MN |
184 | const u32 nfs4_fs_locations_bitmap[2] = { |
185 | FATTR4_WORD0_TYPE | |
186 | | FATTR4_WORD0_CHANGE | |
187 | | FATTR4_WORD0_SIZE | |
188 | | FATTR4_WORD0_FSID | |
189 | | FATTR4_WORD0_FILEID | |
190 | | FATTR4_WORD0_FS_LOCATIONS, | |
191 | FATTR4_WORD1_MODE | |
192 | | FATTR4_WORD1_NUMLINKS | |
193 | | FATTR4_WORD1_OWNER | |
194 | | FATTR4_WORD1_OWNER_GROUP | |
195 | | FATTR4_WORD1_RAWDEV | |
196 | | FATTR4_WORD1_SPACE_USED | |
197 | | FATTR4_WORD1_TIME_ACCESS | |
198 | | FATTR4_WORD1_TIME_METADATA | |
199 | | FATTR4_WORD1_TIME_MODIFY | |
200 | | FATTR4_WORD1_MOUNTED_ON_FILEID | |
201 | }; | |
202 | ||
bc4785cd | 203 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
204 | struct nfs4_readdir_arg *readdir) |
205 | { | |
0dbb4c67 | 206 | __be32 *start, *p; |
1da177e4 | 207 | |
1da177e4 | 208 | if (cookie > 2) { |
b7ef1956 | 209 | readdir->cookie = cookie; |
1da177e4 LT |
210 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
211 | return; | |
212 | } | |
213 | ||
214 | readdir->cookie = 0; | |
215 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
216 | if (cookie == 2) | |
217 | return; | |
218 | ||
219 | /* | |
220 | * NFSv4 servers do not return entries for '.' and '..' | |
221 | * Therefore, we fake these entries here. We let '.' | |
222 | * have cookie 0 and '..' have cookie 1. Note that | |
223 | * when talking to the server, we always send cookie 0 | |
224 | * instead of 1 or 2. | |
225 | */ | |
2b86ce2d | 226 | start = p = kmap_atomic(*readdir->pages); |
1da177e4 LT |
227 | |
228 | if (cookie == 0) { | |
229 | *p++ = xdr_one; /* next */ | |
230 | *p++ = xdr_zero; /* cookie, first word */ | |
231 | *p++ = xdr_one; /* cookie, second word */ | |
232 | *p++ = xdr_one; /* entry len */ | |
233 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
234 | p++; | |
235 | *p++ = xdr_one; /* bitmap length */ | |
236 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
237 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 238 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
239 | } |
240 | ||
241 | *p++ = xdr_one; /* next */ | |
242 | *p++ = xdr_zero; /* cookie, first word */ | |
243 | *p++ = xdr_two; /* cookie, second word */ | |
244 | *p++ = xdr_two; /* entry len */ | |
245 | memcpy(p, "..\0\0", 4); /* entry */ | |
246 | p++; | |
247 | *p++ = xdr_one; /* bitmap length */ | |
248 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
249 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 250 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
251 | |
252 | readdir->pgbase = (char *)p - (char *)start; | |
253 | readdir->count -= readdir->pgbase; | |
2b86ce2d | 254 | kunmap_atomic(start); |
1da177e4 LT |
255 | } |
256 | ||
65de872e TM |
257 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) |
258 | { | |
259 | int res = 0; | |
260 | ||
261 | might_sleep(); | |
262 | ||
263 | if (*timeout <= 0) | |
264 | *timeout = NFS4_POLL_RETRY_MIN; | |
265 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
266 | *timeout = NFS4_POLL_RETRY_MAX; | |
d310310c | 267 | freezable_schedule_timeout_killable(*timeout); |
65de872e TM |
268 | if (fatal_signal_pending(current)) |
269 | res = -ERESTARTSYS; | |
270 | *timeout <<= 1; | |
271 | return res; | |
272 | } | |
273 | ||
274 | /* This is the error handling routine for processes that are allowed | |
275 | * to sleep. | |
276 | */ | |
b064eca2 | 277 | static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
65de872e TM |
278 | { |
279 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 280 | struct nfs4_state *state = exception->state; |
3114ea7a | 281 | struct inode *inode = exception->inode; |
65de872e TM |
282 | int ret = errorcode; |
283 | ||
284 | exception->retry = 0; | |
285 | switch(errorcode) { | |
286 | case 0: | |
287 | return 0; | |
3114ea7a | 288 | case -NFS4ERR_OPENMODE: |
011e2a7f | 289 | if (inode && nfs4_have_delegation(inode, FMODE_READ)) { |
57ec14c5 | 290 | nfs4_inode_return_delegation(inode); |
3114ea7a TM |
291 | exception->retry = 1; |
292 | return 0; | |
293 | } | |
294 | if (state == NULL) | |
295 | break; | |
296 | nfs4_schedule_stateid_recovery(server, state); | |
297 | goto wait_on_recovery; | |
a1d0b5ee | 298 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
299 | case -NFS4ERR_ADMIN_REVOKED: |
300 | case -NFS4ERR_BAD_STATEID: | |
9e33bed5 TM |
301 | if (state == NULL) |
302 | break; | |
14977489 | 303 | nfs_remove_bad_delegation(state->inode); |
0400a6b0 TM |
304 | nfs4_schedule_stateid_recovery(server, state); |
305 | goto wait_on_recovery; | |
0ced63d1 TM |
306 | case -NFS4ERR_EXPIRED: |
307 | if (state != NULL) | |
308 | nfs4_schedule_stateid_recovery(server, state); | |
65de872e | 309 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 310 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
311 | nfs4_schedule_lease_recovery(clp); |
312 | goto wait_on_recovery; | |
03391693 | 313 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
314 | case -NFS4ERR_BADSESSION: |
315 | case -NFS4ERR_BADSLOT: | |
316 | case -NFS4ERR_BAD_HIGH_SLOT: | |
317 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
318 | case -NFS4ERR_DEADSESSION: | |
319 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
320 | case -NFS4ERR_SEQ_MISORDERED: | |
321 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
322 | errorcode); | |
9f594791 | 323 | nfs4_schedule_session_recovery(clp->cl_session, errorcode); |
399f11c3 | 324 | goto wait_on_recovery; |
03391693 | 325 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 326 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
327 | if (exception->timeout > HZ) { |
328 | /* We have retried a decent amount, time to | |
329 | * fail | |
330 | */ | |
331 | ret = -EBUSY; | |
332 | break; | |
333 | } | |
65de872e TM |
334 | case -NFS4ERR_GRACE: |
335 | case -NFS4ERR_DELAY: | |
2c643488 | 336 | case -EKEYEXPIRED: |
65de872e TM |
337 | ret = nfs4_delay(server->client, &exception->timeout); |
338 | if (ret != 0) | |
339 | break; | |
a8a4ae3a | 340 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
341 | case -NFS4ERR_OLD_STATEID: |
342 | exception->retry = 1; | |
b064eca2 TM |
343 | break; |
344 | case -NFS4ERR_BADOWNER: | |
345 | /* The following works around a Linux server bug! */ | |
346 | case -NFS4ERR_BADNAME: | |
347 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
348 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
349 | exception->retry = 1; | |
350 | printk(KERN_WARNING "NFS: v4 server %s " | |
351 | "does not accept raw " | |
352 | "uid/gids. " | |
353 | "Reenabling the idmapper.\n", | |
354 | server->nfs_client->cl_hostname); | |
355 | } | |
65de872e TM |
356 | } |
357 | /* We failed to handle the error */ | |
358 | return nfs4_map_errors(ret); | |
0400a6b0 | 359 | wait_on_recovery: |
a2c0b9e2 TM |
360 | ret = nfs4_wait_clnt_recover(clp); |
361 | if (ret == 0) | |
362 | exception->retry = 1; | |
363 | return ret; | |
65de872e TM |
364 | } |
365 | ||
366 | ||
452e9352 | 367 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 368 | { |
1da177e4 LT |
369 | spin_lock(&clp->cl_lock); |
370 | if (time_before(clp->cl_last_renewal,timestamp)) | |
371 | clp->cl_last_renewal = timestamp; | |
372 | spin_unlock(&clp->cl_lock); | |
373 | } | |
374 | ||
452e9352 TM |
375 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
376 | { | |
377 | do_renew_lease(server->nfs_client, timestamp); | |
378 | } | |
379 | ||
cccef3b9 AA |
380 | #if defined(CONFIG_NFS_V4_1) |
381 | ||
961a828d TM |
382 | bool nfs4_set_task_privileged(struct rpc_task *task, void *dummy) |
383 | { | |
384 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
385 | return true; | |
e2c4ab3c AA |
386 | } |
387 | ||
d185a334 | 388 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 | 389 | { |
e3725ec0 | 390 | struct nfs4_session *session; |
13615871 AA |
391 | struct nfs4_slot_table *tbl; |
392 | ||
dfb4f309 | 393 | if (!res->sr_slot) { |
13615871 AA |
394 | /* just wake up the next guy waiting since |
395 | * we may have not consumed a slot after all */ | |
691daf3b | 396 | dprintk("%s: No slot\n", __func__); |
35dc1d74 | 397 | return; |
13615871 | 398 | } |
e3725ec0 TM |
399 | tbl = res->sr_slot->table; |
400 | session = tbl->session; | |
ea028ac9 | 401 | |
35dc1d74 | 402 | spin_lock(&tbl->slot_tbl_lock); |
f4af6e2a | 403 | nfs4_free_slot(tbl, res->sr_slot); |
5d63360d TM |
404 | if (!nfs4_session_draining(session)) |
405 | rpc_wake_up_first(&tbl->slot_tbl_waitq, | |
406 | nfs4_set_task_privileged, NULL); | |
35dc1d74 | 407 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 408 | res->sr_slot = NULL; |
13615871 AA |
409 | } |
410 | ||
14516c3a | 411 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c | 412 | { |
e3725ec0 | 413 | struct nfs4_session *session; |
933602e3 | 414 | struct nfs4_slot *slot; |
b0df806c | 415 | unsigned long timestamp; |
14516c3a | 416 | struct nfs_client *clp; |
b0df806c AA |
417 | |
418 | /* | |
419 | * sr_status remains 1 if an RPC level error occurred. The server | |
420 | * may or may not have processed the sequence operation.. | |
421 | * Proceed as if the server received and processed the sequence | |
422 | * operation. | |
423 | */ | |
424 | if (res->sr_status == 1) | |
425 | res->sr_status = NFS_OK; | |
426 | ||
468f8613 BS |
427 | /* don't increment the sequence number if the task wasn't sent */ |
428 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
429 | goto out; |
430 | ||
933602e3 | 431 | slot = res->sr_slot; |
e3725ec0 | 432 | session = slot->table->session; |
933602e3 | 433 | |
691daf3b | 434 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
435 | switch (res->sr_status) { |
436 | case 0: | |
b0df806c | 437 | /* Update the slot's sequence and clientid lease timer */ |
933602e3 TM |
438 | ++slot->seq_nr; |
439 | timestamp = slot->renewal_time; | |
e3725ec0 | 440 | clp = session->clp; |
452e9352 | 441 | do_renew_lease(clp, timestamp); |
0629e370 | 442 | /* Check sequence flags */ |
b4410c2f TM |
443 | if (res->sr_status_flags != 0) |
444 | nfs4_schedule_lease_recovery(clp); | |
464ee9f9 | 445 | nfs41_update_target_slotid(slot->table, slot, res); |
14516c3a TM |
446 | break; |
447 | case -NFS4ERR_DELAY: | |
448 | /* The server detected a resend of the RPC call and | |
449 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
450 | * of RFC5661. | |
451 | */ | |
df2fabff | 452 | dprintk("%s: slot=%u seq=%u: Operation in progress\n", |
dfb4f309 | 453 | __func__, |
df2fabff | 454 | slot->slot_nr, |
933602e3 | 455 | slot->seq_nr); |
14516c3a TM |
456 | goto out_retry; |
457 | default: | |
458 | /* Just update the slot sequence no. */ | |
933602e3 | 459 | ++slot->seq_nr; |
b0df806c AA |
460 | } |
461 | out: | |
462 | /* The session may be reset by one of the error handlers. */ | |
463 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 464 | nfs41_sequence_free_slot(res); |
14516c3a TM |
465 | return 1; |
466 | out_retry: | |
d05dd4e9 | 467 | if (!rpc_restart_call(task)) |
14516c3a TM |
468 | goto out; |
469 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
470 | return 0; | |
b0df806c AA |
471 | } |
472 | ||
14516c3a TM |
473 | static int nfs4_sequence_done(struct rpc_task *task, |
474 | struct nfs4_sequence_res *res) | |
df896455 | 475 | { |
e3725ec0 | 476 | if (res->sr_slot == NULL) |
14516c3a TM |
477 | return 1; |
478 | return nfs41_sequence_done(task, res); | |
df896455 TM |
479 | } |
480 | ||
9d12b216 TM |
481 | static void nfs41_init_sequence(struct nfs4_sequence_args *args, |
482 | struct nfs4_sequence_res *res, int cache_reply) | |
483 | { | |
2b2fa717 | 484 | args->sa_slot = NULL; |
9d12b216 TM |
485 | args->sa_cache_this = 0; |
486 | if (cache_reply) | |
487 | args->sa_cache_this = 1; | |
9d12b216 TM |
488 | res->sr_slot = NULL; |
489 | } | |
490 | ||
dc70d7b3 | 491 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
492 | struct nfs4_sequence_args *args, |
493 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
494 | struct rpc_task *task) |
495 | { | |
fbcd4abc AA |
496 | struct nfs4_slot *slot; |
497 | struct nfs4_slot_table *tbl; | |
fbcd4abc AA |
498 | |
499 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 500 | /* slot already allocated? */ |
dfb4f309 | 501 | if (res->sr_slot != NULL) |
ce5039c1 AA |
502 | return 0; |
503 | ||
fbcd4abc AA |
504 | tbl = &session->fc_slot_table; |
505 | ||
69d206b5 TM |
506 | task->tk_timeout = 0; |
507 | ||
fbcd4abc | 508 | spin_lock(&tbl->slot_tbl_lock); |
a2118c33 | 509 | if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) && |
5601a00d | 510 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { |
0b1c8fc4 | 511 | /* The state manager will wait until the slot table is empty */ |
05f0d236 | 512 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
b069d94a | 513 | spin_unlock(&tbl->slot_tbl_lock); |
0b1c8fc4 | 514 | dprintk("%s session is draining\n", __func__); |
05f0d236 | 515 | return -EAGAIN; |
b069d94a AA |
516 | } |
517 | ||
689cf5c1 AB |
518 | if (!rpc_queue_empty(&tbl->slot_tbl_waitq) && |
519 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { | |
520 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
521 | spin_unlock(&tbl->slot_tbl_lock); | |
522 | dprintk("%s enforce FIFO order\n", __func__); | |
523 | return -EAGAIN; | |
524 | } | |
525 | ||
2dc03b7f | 526 | slot = nfs4_alloc_slot(tbl); |
69d206b5 TM |
527 | if (IS_ERR(slot)) { |
528 | /* If out of memory, try again in 1/4 second */ | |
529 | if (slot == ERR_PTR(-ENOMEM)) | |
530 | task->tk_timeout = HZ >> 2; | |
fbcd4abc AA |
531 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
532 | spin_unlock(&tbl->slot_tbl_lock); | |
533 | dprintk("<-- %s: no free slots\n", __func__); | |
534 | return -EAGAIN; | |
535 | } | |
536 | spin_unlock(&tbl->slot_tbl_lock); | |
537 | ||
689cf5c1 | 538 | rpc_task_set_priority(task, RPC_PRIORITY_NORMAL); |
2b2fa717 TM |
539 | |
540 | args->sa_slot = slot; | |
fbcd4abc | 541 | |
2dc03b7f TM |
542 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, |
543 | slot->slot_nr, slot->seq_nr); | |
fbcd4abc | 544 | |
dfb4f309 | 545 | res->sr_slot = slot; |
2a6e26cd | 546 | res->sr_status_flags = 0; |
fbcd4abc AA |
547 | /* |
548 | * sr_status is only set in decode_sequence, and so will remain | |
549 | * set to 1 if an rpc level failure occurs. | |
550 | */ | |
551 | res->sr_status = 1; | |
ce5039c1 AA |
552 | return 0; |
553 | } | |
dc70d7b3 | 554 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 555 | |
035168ab | 556 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
557 | struct nfs4_sequence_args *args, |
558 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
559 | struct rpc_task *task) |
560 | { | |
035168ab | 561 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
562 | int ret = 0; |
563 | ||
9d12b216 | 564 | if (session == NULL) |
035168ab | 565 | goto out; |
035168ab | 566 | |
df2fabff | 567 | dprintk("--> %s clp %p session %p sr_slot %d\n", |
dfb4f309 | 568 | __func__, session->clp, session, res->sr_slot ? |
df2fabff | 569 | res->sr_slot->slot_nr : -1); |
ce5039c1 | 570 | |
9d12b216 | 571 | ret = nfs41_setup_sequence(session, args, res, task); |
ce5039c1 AA |
572 | out: |
573 | dprintk("<-- %s status=%d\n", __func__, ret); | |
574 | return ret; | |
575 | } | |
576 | ||
577 | struct nfs41_call_sync_data { | |
035168ab | 578 | const struct nfs_server *seq_server; |
ce5039c1 AA |
579 | struct nfs4_sequence_args *seq_args; |
580 | struct nfs4_sequence_res *seq_res; | |
ce5039c1 AA |
581 | }; |
582 | ||
583 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
584 | { | |
585 | struct nfs41_call_sync_data *data = calldata; | |
586 | ||
035168ab TM |
587 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
588 | ||
589 | if (nfs4_setup_sequence(data->seq_server, data->seq_args, | |
9d12b216 | 590 | data->seq_res, task)) |
ce5039c1 AA |
591 | return; |
592 | rpc_call_start(task); | |
593 | } | |
594 | ||
b257957e AB |
595 | static void nfs41_call_priv_sync_prepare(struct rpc_task *task, void *calldata) |
596 | { | |
597 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
598 | nfs41_call_sync_prepare(task, calldata); | |
599 | } | |
600 | ||
69ab40c4 AA |
601 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
602 | { | |
603 | struct nfs41_call_sync_data *data = calldata; | |
604 | ||
14516c3a | 605 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
606 | } |
607 | ||
17280175 | 608 | static const struct rpc_call_ops nfs41_call_sync_ops = { |
ce5039c1 | 609 | .rpc_call_prepare = nfs41_call_sync_prepare, |
69ab40c4 | 610 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
611 | }; |
612 | ||
17280175 | 613 | static const struct rpc_call_ops nfs41_call_priv_sync_ops = { |
b257957e AB |
614 | .rpc_call_prepare = nfs41_call_priv_sync_prepare, |
615 | .rpc_call_done = nfs41_call_sync_done, | |
616 | }; | |
617 | ||
7c513058 BS |
618 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
619 | struct nfs_server *server, | |
ce5039c1 AA |
620 | struct rpc_message *msg, |
621 | struct nfs4_sequence_args *args, | |
622 | struct nfs4_sequence_res *res, | |
b257957e | 623 | int privileged) |
ce5039c1 AA |
624 | { |
625 | int ret; | |
626 | struct rpc_task *task; | |
627 | struct nfs41_call_sync_data data = { | |
035168ab | 628 | .seq_server = server, |
ce5039c1 AA |
629 | .seq_args = args, |
630 | .seq_res = res, | |
ce5039c1 AA |
631 | }; |
632 | struct rpc_task_setup task_setup = { | |
7c513058 | 633 | .rpc_client = clnt, |
ce5039c1 AA |
634 | .rpc_message = msg, |
635 | .callback_ops = &nfs41_call_sync_ops, | |
636 | .callback_data = &data | |
637 | }; | |
638 | ||
b257957e AB |
639 | if (privileged) |
640 | task_setup.callback_ops = &nfs41_call_priv_sync_ops; | |
ce5039c1 AA |
641 | task = rpc_run_task(&task_setup); |
642 | if (IS_ERR(task)) | |
643 | ret = PTR_ERR(task); | |
644 | else { | |
645 | ret = task->tk_status; | |
646 | rpc_put_task(task); | |
647 | } | |
648 | return ret; | |
649 | } | |
650 | ||
7c513058 BS |
651 | int _nfs4_call_sync_session(struct rpc_clnt *clnt, |
652 | struct nfs_server *server, | |
cccef3b9 AA |
653 | struct rpc_message *msg, |
654 | struct nfs4_sequence_args *args, | |
655 | struct nfs4_sequence_res *res, | |
656 | int cache_reply) | |
657 | { | |
9d12b216 TM |
658 | nfs41_init_sequence(args, res, cache_reply); |
659 | return nfs4_call_sync_sequence(clnt, server, msg, args, res, 0); | |
cccef3b9 AA |
660 | } |
661 | ||
df896455 | 662 | #else |
9d12b216 TM |
663 | static inline |
664 | void nfs41_init_sequence(struct nfs4_sequence_args *args, | |
665 | struct nfs4_sequence_res *res, int cache_reply) | |
666 | { | |
667 | } | |
668 | ||
14516c3a TM |
669 | static int nfs4_sequence_done(struct rpc_task *task, |
670 | struct nfs4_sequence_res *res) | |
df896455 | 671 | { |
14516c3a | 672 | return 1; |
df896455 | 673 | } |
cccef3b9 AA |
674 | #endif /* CONFIG_NFS_V4_1 */ |
675 | ||
7c513058 BS |
676 | int _nfs4_call_sync(struct rpc_clnt *clnt, |
677 | struct nfs_server *server, | |
cccef3b9 AA |
678 | struct rpc_message *msg, |
679 | struct nfs4_sequence_args *args, | |
680 | struct nfs4_sequence_res *res, | |
681 | int cache_reply) | |
682 | { | |
9d12b216 | 683 | nfs41_init_sequence(args, res, cache_reply); |
7c513058 | 684 | return rpc_call_sync(clnt, msg, 0); |
cccef3b9 AA |
685 | } |
686 | ||
e73b83f2 | 687 | static inline |
7c513058 BS |
688 | int nfs4_call_sync(struct rpc_clnt *clnt, |
689 | struct nfs_server *server, | |
e73b83f2 BS |
690 | struct rpc_message *msg, |
691 | struct nfs4_sequence_args *args, | |
692 | struct nfs4_sequence_res *res, | |
693 | int cache_reply) | |
694 | { | |
7c513058 BS |
695 | return server->nfs_client->cl_mvops->call_sync(clnt, server, msg, |
696 | args, res, cache_reply); | |
e73b83f2 | 697 | } |
cccef3b9 | 698 | |
38478b24 | 699 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 700 | { |
38478b24 | 701 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 702 | |
38478b24 | 703 | spin_lock(&dir->i_lock); |
359d7d1c | 704 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA; |
a9a4a87a | 705 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 706 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 707 | dir->i_version = cinfo->after; |
38478b24 | 708 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
709 | } |
710 | ||
e56e0b78 | 711 | struct nfs4_opendata { |
c6d00e63 | 712 | struct kref kref; |
e56e0b78 TM |
713 | struct nfs_openargs o_arg; |
714 | struct nfs_openres o_res; | |
cdd4e68b TM |
715 | struct nfs_open_confirmargs c_arg; |
716 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
717 | struct nfs4_string owner_name; |
718 | struct nfs4_string group_name; | |
e56e0b78 | 719 | struct nfs_fattr f_attr; |
e56e0b78 | 720 | struct dentry *dir; |
82a2c1b7 | 721 | struct dentry *dentry; |
e56e0b78 | 722 | struct nfs4_state_owner *owner; |
aac00a8d | 723 | struct nfs4_state *state; |
e56e0b78 | 724 | struct iattr attrs; |
26e976a8 | 725 | unsigned long timestamp; |
3e309914 | 726 | unsigned int rpc_done : 1; |
24ac23ab TM |
727 | int rpc_status; |
728 | int cancelled; | |
e56e0b78 TM |
729 | }; |
730 | ||
2ced46c2 TM |
731 | |
732 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
733 | { | |
734 | p->o_res.f_attr = &p->f_attr; | |
c1d51931 TM |
735 | p->o_res.seqid = p->o_arg.seqid; |
736 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 | 737 | p->o_res.server = p->o_arg.server; |
5f657530 | 738 | p->o_res.access_request = p->o_arg.access; |
2ced46c2 | 739 | nfs_fattr_init(&p->f_attr); |
6926afd1 | 740 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
741 | } |
742 | ||
82a2c1b7 | 743 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 744 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be TM |
745 | const struct iattr *attrs, |
746 | gfp_t gfp_mask) | |
e56e0b78 | 747 | { |
82a2c1b7 | 748 | struct dentry *parent = dget_parent(dentry); |
e56e0b78 TM |
749 | struct inode *dir = parent->d_inode; |
750 | struct nfs_server *server = NFS_SERVER(dir); | |
751 | struct nfs4_opendata *p; | |
752 | ||
8535b2be | 753 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
754 | if (p == NULL) |
755 | goto err; | |
8535b2be | 756 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 TM |
757 | if (p->o_arg.seqid == NULL) |
758 | goto err_free; | |
82a2c1b7 AV |
759 | nfs_sb_active(dentry->d_sb); |
760 | p->dentry = dget(dentry); | |
e56e0b78 TM |
761 | p->dir = parent; |
762 | p->owner = sp; | |
763 | atomic_inc(&sp->so_count); | |
764 | p->o_arg.fh = NFS_FH(dir); | |
dc0b027d TM |
765 | p->o_arg.open_flags = flags; |
766 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
ae2bb032 WAA |
767 | /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS |
768 | * will return permission denied for all bits until close */ | |
769 | if (!(flags & O_EXCL)) { | |
770 | /* ask server to check for all possible rights as results | |
771 | * are cached */ | |
772 | p->o_arg.access = NFS4_ACCESS_READ | NFS4_ACCESS_MODIFY | | |
773 | NFS4_ACCESS_EXTEND | NFS4_ACCESS_EXECUTE; | |
ae2bb032 | 774 | } |
7539bbab | 775 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
95b72eb0 TM |
776 | p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time); |
777 | p->o_arg.id.uniquifier = sp->so_seqid.owner_id; | |
82a2c1b7 | 778 | p->o_arg.name = &dentry->d_name; |
e56e0b78 TM |
779 | p->o_arg.server = server; |
780 | p->o_arg.bitmask = server->attr_bitmask; | |
1549210f | 781 | p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0]; |
e56e0b78 | 782 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; |
536e43d1 | 783 | if (attrs != NULL && attrs->ia_valid != 0) { |
cd93710e | 784 | __be32 verf[2]; |
d77d76ff | 785 | |
e56e0b78 TM |
786 | p->o_arg.u.attrs = &p->attrs; |
787 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
cd93710e CL |
788 | |
789 | verf[0] = jiffies; | |
790 | verf[1] = current->pid; | |
791 | memcpy(p->o_arg.u.verifier.data, verf, | |
792 | sizeof(p->o_arg.u.verifier.data)); | |
e56e0b78 | 793 | } |
cdd4e68b TM |
794 | p->c_arg.fh = &p->o_res.fh; |
795 | p->c_arg.stateid = &p->o_res.stateid; | |
796 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 797 | nfs4_init_opendata_res(p); |
c6d00e63 | 798 | kref_init(&p->kref); |
e56e0b78 TM |
799 | return p; |
800 | err_free: | |
801 | kfree(p); | |
802 | err: | |
803 | dput(parent); | |
804 | return NULL; | |
805 | } | |
806 | ||
c6d00e63 | 807 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 808 | { |
c6d00e63 TM |
809 | struct nfs4_opendata *p = container_of(kref, |
810 | struct nfs4_opendata, kref); | |
82a2c1b7 | 811 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
812 | |
813 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
814 | if (p->state != NULL) |
815 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
816 | nfs4_put_state_owner(p->owner); |
817 | dput(p->dir); | |
82a2c1b7 AV |
818 | dput(p->dentry); |
819 | nfs_sb_deactive(sb); | |
6926afd1 | 820 | nfs_fattr_free_names(&p->f_attr); |
c6d00e63 TM |
821 | kfree(p); |
822 | } | |
823 | ||
824 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
825 | { | |
826 | if (p != NULL) | |
827 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
828 | } |
829 | ||
06f814a3 TM |
830 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
831 | { | |
06f814a3 TM |
832 | int ret; |
833 | ||
06f814a3 | 834 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
835 | return ret; |
836 | } | |
837 | ||
dc0b027d | 838 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
839 | { |
840 | int ret = 0; | |
dc0b027d | 841 | |
536e43d1 | 842 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
843 | goto out; |
844 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 845 | case FMODE_READ: |
88069f77 TM |
846 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
847 | && state->n_rdonly != 0; | |
6ee41268 TM |
848 | break; |
849 | case FMODE_WRITE: | |
88069f77 TM |
850 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
851 | && state->n_wronly != 0; | |
6ee41268 TM |
852 | break; |
853 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
854 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
855 | && state->n_rdwr != 0; | |
6ee41268 | 856 | } |
dc0b027d | 857 | out: |
6ee41268 TM |
858 | return ret; |
859 | } | |
860 | ||
dc0b027d | 861 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 862 | { |
652f89f6 TM |
863 | if (delegation == NULL) |
864 | return 0; | |
dc0b027d | 865 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 866 | return 0; |
15c831bf | 867 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 868 | return 0; |
b7391f44 | 869 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
870 | return 1; |
871 | } | |
872 | ||
dc0b027d | 873 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 874 | { |
dc0b027d | 875 | switch (fmode) { |
e7616923 TM |
876 | case FMODE_WRITE: |
877 | state->n_wronly++; | |
878 | break; | |
879 | case FMODE_READ: | |
880 | state->n_rdonly++; | |
881 | break; | |
882 | case FMODE_READ|FMODE_WRITE: | |
883 | state->n_rdwr++; | |
884 | } | |
dc0b027d | 885 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
886 | } |
887 | ||
dc0b027d | 888 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
889 | { |
890 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
f597c537 TM |
891 | nfs4_stateid_copy(&state->stateid, stateid); |
892 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
dc0b027d | 893 | switch (fmode) { |
003707c7 TM |
894 | case FMODE_READ: |
895 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
896 | break; | |
897 | case FMODE_WRITE: | |
898 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
899 | break; | |
900 | case FMODE_READ|FMODE_WRITE: | |
901 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
902 | } | |
e7616923 TM |
903 | } |
904 | ||
dc0b027d | 905 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 906 | { |
8bda4e4c | 907 | write_seqlock(&state->seqlock); |
dc0b027d | 908 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 909 | write_sequnlock(&state->seqlock); |
003707c7 TM |
910 | } |
911 | ||
dc0b027d | 912 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 913 | { |
8bda4e4c TM |
914 | /* |
915 | * Protect the call to nfs4_state_set_mode_locked and | |
916 | * serialise the stateid update | |
917 | */ | |
918 | write_seqlock(&state->seqlock); | |
003707c7 | 919 | if (deleg_stateid != NULL) { |
f597c537 | 920 | nfs4_stateid_copy(&state->stateid, deleg_stateid); |
003707c7 TM |
921 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
922 | } | |
923 | if (open_stateid != NULL) | |
dc0b027d | 924 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
925 | write_sequnlock(&state->seqlock); |
926 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 927 | update_open_stateflags(state, fmode); |
ec073428 | 928 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
929 | } |
930 | ||
dc0b027d | 931 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
932 | { |
933 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
934 | struct nfs_delegation *deleg_cur; | |
935 | int ret = 0; | |
936 | ||
dc0b027d | 937 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
938 | |
939 | rcu_read_lock(); | |
940 | deleg_cur = rcu_dereference(nfsi->delegation); | |
941 | if (deleg_cur == NULL) | |
942 | goto no_delegation; | |
943 | ||
944 | spin_lock(&deleg_cur->lock); | |
945 | if (nfsi->delegation != deleg_cur || | |
dc0b027d | 946 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
947 | goto no_delegation_unlock; |
948 | ||
949 | if (delegation == NULL) | |
950 | delegation = &deleg_cur->stateid; | |
f597c537 | 951 | else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) |
34310430 TM |
952 | goto no_delegation_unlock; |
953 | ||
b7391f44 | 954 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 955 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
956 | ret = 1; |
957 | no_delegation_unlock: | |
958 | spin_unlock(&deleg_cur->lock); | |
959 | no_delegation: | |
960 | rcu_read_unlock(); | |
961 | ||
962 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 963 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
964 | ret = 1; |
965 | } | |
966 | ||
967 | return ret; | |
968 | } | |
969 | ||
970 | ||
dc0b027d | 971 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
972 | { |
973 | struct nfs_delegation *delegation; | |
974 | ||
975 | rcu_read_lock(); | |
976 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 977 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
978 | rcu_read_unlock(); |
979 | return; | |
980 | } | |
981 | rcu_read_unlock(); | |
57ec14c5 | 982 | nfs4_inode_return_delegation(inode); |
aac00a8d TM |
983 | } |
984 | ||
6ee41268 | 985 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
986 | { |
987 | struct nfs4_state *state = opendata->state; | |
988 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
989 | struct nfs_delegation *delegation; | |
536e43d1 | 990 | int open_mode = opendata->o_arg.open_flags & (O_EXCL|O_TRUNC); |
dc0b027d | 991 | fmode_t fmode = opendata->o_arg.fmode; |
aac00a8d TM |
992 | nfs4_stateid stateid; |
993 | int ret = -EAGAIN; | |
994 | ||
aac00a8d | 995 | for (;;) { |
dc0b027d | 996 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 997 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
998 | if (can_open_cached(state, fmode, open_mode)) { |
999 | update_open_stateflags(state, fmode); | |
6ee41268 | 1000 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
1001 | goto out_return_state; |
1002 | } | |
1003 | spin_unlock(&state->owner->so_lock); | |
1004 | } | |
34310430 TM |
1005 | rcu_read_lock(); |
1006 | delegation = rcu_dereference(nfsi->delegation); | |
652f89f6 | 1007 | if (!can_open_delegated(delegation, fmode)) { |
34310430 | 1008 | rcu_read_unlock(); |
aac00a8d | 1009 | break; |
34310430 | 1010 | } |
aac00a8d | 1011 | /* Save the delegation */ |
f597c537 | 1012 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1013 | rcu_read_unlock(); |
af22f94a | 1014 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
1015 | if (ret != 0) |
1016 | goto out; | |
1017 | ret = -EAGAIN; | |
34310430 TM |
1018 | |
1019 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1020 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1021 | goto out_return_state; |
aac00a8d | 1022 | } |
aac00a8d TM |
1023 | out: |
1024 | return ERR_PTR(ret); | |
1025 | out_return_state: | |
1026 | atomic_inc(&state->count); | |
1027 | return state; | |
1028 | } | |
1029 | ||
e23008ec AA |
1030 | static void |
1031 | nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state) | |
1032 | { | |
1033 | struct nfs_client *clp = NFS_SERVER(state->inode)->nfs_client; | |
1034 | struct nfs_delegation *delegation; | |
1035 | int delegation_flags = 0; | |
1036 | ||
1037 | rcu_read_lock(); | |
1038 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
1039 | if (delegation) | |
1040 | delegation_flags = delegation->flags; | |
1041 | rcu_read_unlock(); | |
1042 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) { | |
1043 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " | |
1044 | "returning a delegation for " | |
1045 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
1046 | clp->cl_hostname); | |
1047 | } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) | |
1048 | nfs_inode_set_delegation(state->inode, | |
1049 | data->owner->so_cred, | |
1050 | &data->o_res); | |
1051 | else | |
1052 | nfs_inode_reclaim_delegation(state->inode, | |
1053 | data->owner->so_cred, | |
1054 | &data->o_res); | |
1055 | } | |
1056 | ||
1057 | /* | |
1058 | * Check the inode attributes against the CLAIM_PREVIOUS returned attributes | |
1059 | * and update the nfs4_state. | |
1060 | */ | |
1061 | static struct nfs4_state * | |
1062 | _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data) | |
1063 | { | |
1064 | struct inode *inode = data->state->inode; | |
1065 | struct nfs4_state *state = data->state; | |
1066 | int ret; | |
1067 | ||
1068 | if (!data->rpc_done) { | |
1069 | ret = data->rpc_status; | |
1070 | goto err; | |
1071 | } | |
1072 | ||
1073 | ret = -ESTALE; | |
1074 | if (!(data->f_attr.valid & NFS_ATTR_FATTR_TYPE) || | |
1075 | !(data->f_attr.valid & NFS_ATTR_FATTR_FILEID) || | |
1076 | !(data->f_attr.valid & NFS_ATTR_FATTR_CHANGE)) | |
1077 | goto err; | |
1078 | ||
1079 | ret = -ENOMEM; | |
1080 | state = nfs4_get_open_state(inode, data->owner); | |
1081 | if (state == NULL) | |
1082 | goto err; | |
1083 | ||
1084 | ret = nfs_refresh_inode(inode, &data->f_attr); | |
1085 | if (ret) | |
1086 | goto err; | |
1087 | ||
1088 | if (data->o_res.delegation_type != 0) | |
1089 | nfs4_opendata_check_deleg(data, state); | |
1090 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
1091 | data->o_arg.fmode); | |
1092 | ||
1093 | return state; | |
1094 | err: | |
1095 | return ERR_PTR(ret); | |
1096 | ||
1097 | } | |
1098 | ||
1099 | static struct nfs4_state * | |
1100 | _nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
24ac23ab TM |
1101 | { |
1102 | struct inode *inode; | |
1103 | struct nfs4_state *state = NULL; | |
1b370bc2 | 1104 | int ret; |
24ac23ab | 1105 | |
aac00a8d | 1106 | if (!data->rpc_done) { |
6ee41268 | 1107 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1108 | goto out; |
1109 | } | |
1110 | ||
1b370bc2 | 1111 | ret = -EAGAIN; |
24ac23ab | 1112 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1113 | goto err; |
24ac23ab | 1114 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 1115 | ret = PTR_ERR(inode); |
03f28e3a | 1116 | if (IS_ERR(inode)) |
1b370bc2 TM |
1117 | goto err; |
1118 | ret = -ENOMEM; | |
24ac23ab TM |
1119 | state = nfs4_get_open_state(inode, data->owner); |
1120 | if (state == NULL) | |
1b370bc2 | 1121 | goto err_put_inode; |
e23008ec AA |
1122 | if (data->o_res.delegation_type != 0) |
1123 | nfs4_opendata_check_deleg(data, state); | |
34310430 | 1124 | update_open_stateid(state, &data->o_res.stateid, NULL, |
dc0b027d | 1125 | data->o_arg.fmode); |
24ac23ab | 1126 | iput(inode); |
aac00a8d | 1127 | out: |
24ac23ab | 1128 | return state; |
1b370bc2 TM |
1129 | err_put_inode: |
1130 | iput(inode); | |
1131 | err: | |
1132 | return ERR_PTR(ret); | |
24ac23ab TM |
1133 | } |
1134 | ||
e23008ec AA |
1135 | static struct nfs4_state * |
1136 | nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
1137 | { | |
1138 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) | |
1139 | return _nfs4_opendata_reclaim_to_nfs4_state(data); | |
1140 | return _nfs4_opendata_to_nfs4_state(data); | |
1141 | } | |
1142 | ||
864472e9 TM |
1143 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1144 | { | |
1145 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1146 | struct nfs_open_context *ctx; | |
1147 | ||
1148 | spin_lock(&state->inode->i_lock); | |
1149 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1150 | if (ctx->state != state) | |
1151 | continue; | |
1152 | get_nfs_open_context(ctx); | |
1153 | spin_unlock(&state->inode->i_lock); | |
1154 | return ctx; | |
1155 | } | |
1156 | spin_unlock(&state->inode->i_lock); | |
1157 | return ERR_PTR(-ENOENT); | |
1158 | } | |
1159 | ||
6f220ed5 TM |
1160 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
1161 | { | |
1162 | struct nfs4_opendata *opendata; | |
1163 | ||
3d4ff43d | 1164 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, NULL, GFP_NOFS); |
6f220ed5 TM |
1165 | if (opendata == NULL) |
1166 | return ERR_PTR(-ENOMEM); | |
1167 | opendata->state = state; | |
1168 | atomic_inc(&state->count); | |
1169 | return opendata; | |
1170 | } | |
1171 | ||
dc0b027d | 1172 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1173 | { |
2ced46c2 | 1174 | struct nfs4_state *newstate; |
864472e9 TM |
1175 | int ret; |
1176 | ||
dc0b027d TM |
1177 | opendata->o_arg.open_flags = 0; |
1178 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1179 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1180 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1181 | nfs4_init_opendata_res(opendata); | |
b257957e | 1182 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1183 | if (ret != 0) |
1184 | return ret; | |
2ced46c2 | 1185 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1186 | if (IS_ERR(newstate)) |
1187 | return PTR_ERR(newstate); | |
643168c2 | 1188 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1189 | *res = newstate; |
864472e9 TM |
1190 | return 0; |
1191 | } | |
1192 | ||
1193 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1194 | { | |
864472e9 | 1195 | struct nfs4_state *newstate; |
864472e9 TM |
1196 | int ret; |
1197 | ||
1198 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1199 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
1200 | smp_rmb(); |
1201 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1202 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1203 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1204 | if (ret != 0) |
1205 | return ret; | |
2ced46c2 TM |
1206 | if (newstate != state) |
1207 | return -ESTALE; | |
864472e9 TM |
1208 | } |
1209 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1210 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1211 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1212 | if (ret != 0) |
1213 | return ret; | |
2ced46c2 TM |
1214 | if (newstate != state) |
1215 | return -ESTALE; | |
864472e9 TM |
1216 | } |
1217 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1218 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1219 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1220 | if (ret != 0) |
1221 | return ret; | |
2ced46c2 TM |
1222 | if (newstate != state) |
1223 | return -ESTALE; | |
864472e9 | 1224 | } |
1ac7e2fd TM |
1225 | /* |
1226 | * We may have performed cached opens for all three recoveries. | |
1227 | * Check if we need to update the current stateid. | |
1228 | */ | |
1229 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 1230 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 1231 | write_seqlock(&state->seqlock); |
1ac7e2fd | 1232 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 1233 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 1234 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1235 | } |
864472e9 TM |
1236 | return 0; |
1237 | } | |
1238 | ||
1da177e4 LT |
1239 | /* |
1240 | * OPEN_RECLAIM: | |
1241 | * reclaim state on the server after a reboot. | |
1da177e4 | 1242 | */ |
539cd03a | 1243 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1244 | { |
1ac7e2fd | 1245 | struct nfs_delegation *delegation; |
864472e9 | 1246 | struct nfs4_opendata *opendata; |
dc0b027d | 1247 | fmode_t delegation_type = 0; |
1da177e4 LT |
1248 | int status; |
1249 | ||
6f220ed5 TM |
1250 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1251 | if (IS_ERR(opendata)) | |
1252 | return PTR_ERR(opendata); | |
864472e9 TM |
1253 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
1254 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
1255 | rcu_read_lock(); |
1256 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1257 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1258 | delegation_type = delegation->type; |
1ac7e2fd | 1259 | rcu_read_unlock(); |
864472e9 TM |
1260 | opendata->o_arg.u.delegation_type = delegation_type; |
1261 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1262 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1263 | return status; |
1264 | } | |
1265 | ||
539cd03a | 1266 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1267 | { |
1268 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1269 | struct nfs4_exception exception = { }; | |
1270 | int err; | |
1271 | do { | |
539cd03a | 1272 | err = _nfs4_do_open_reclaim(ctx, state); |
168667c4 | 1273 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1274 | break; |
1275 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1276 | } while (exception.retry); |
1277 | return err; | |
1278 | } | |
1279 | ||
864472e9 TM |
1280 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1281 | { | |
1282 | struct nfs_open_context *ctx; | |
1283 | int ret; | |
1284 | ||
1285 | ctx = nfs4_state_find_open_context(state); | |
1286 | if (IS_ERR(ctx)) | |
1287 | return PTR_ERR(ctx); | |
539cd03a | 1288 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1289 | put_nfs_open_context(ctx); |
1290 | return ret; | |
1291 | } | |
1292 | ||
13437e12 | 1293 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 1294 | { |
e56e0b78 | 1295 | struct nfs4_opendata *opendata; |
864472e9 | 1296 | int ret; |
1da177e4 | 1297 | |
6f220ed5 TM |
1298 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1299 | if (IS_ERR(opendata)) | |
1300 | return PTR_ERR(opendata); | |
e56e0b78 | 1301 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
f597c537 | 1302 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); |
864472e9 | 1303 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 1304 | nfs4_opendata_put(opendata); |
864472e9 | 1305 | return ret; |
1da177e4 LT |
1306 | } |
1307 | ||
13437e12 | 1308 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
1309 | { |
1310 | struct nfs4_exception exception = { }; | |
539cd03a | 1311 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
1312 | int err; |
1313 | do { | |
13437e12 | 1314 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
1315 | switch (err) { |
1316 | case 0: | |
965b5d67 TM |
1317 | case -ENOENT: |
1318 | case -ESTALE: | |
1319 | goto out; | |
bcfa49f6 RL |
1320 | case -NFS4ERR_BADSESSION: |
1321 | case -NFS4ERR_BADSLOT: | |
1322 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1323 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1324 | case -NFS4ERR_DEADSESSION: | |
9f594791 | 1325 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); |
bcfa49f6 | 1326 | goto out; |
1da177e4 LT |
1327 | case -NFS4ERR_STALE_CLIENTID: |
1328 | case -NFS4ERR_STALE_STATEID: | |
1329 | case -NFS4ERR_EXPIRED: | |
1330 | /* Don't recall a delegation if it was lost */ | |
0400a6b0 | 1331 | nfs4_schedule_lease_recovery(server->nfs_client); |
965b5d67 TM |
1332 | goto out; |
1333 | case -ERESTARTSYS: | |
1334 | /* | |
1335 | * The show must go on: exit, but mark the | |
1336 | * stateid as needing recovery. | |
1337 | */ | |
a1d0b5ee | 1338 | case -NFS4ERR_DELEG_REVOKED: |
965b5d67 TM |
1339 | case -NFS4ERR_ADMIN_REVOKED: |
1340 | case -NFS4ERR_BAD_STATEID: | |
a1d0b5ee TM |
1341 | nfs_inode_find_state_and_recover(state->inode, |
1342 | stateid); | |
0400a6b0 | 1343 | nfs4_schedule_stateid_recovery(server, state); |
168667c4 TM |
1344 | case -EKEYEXPIRED: |
1345 | /* | |
1346 | * User RPCSEC_GSS context has expired. | |
1347 | * We cannot recover this stateid now, so | |
1348 | * skip it and allow recovery thread to | |
1349 | * proceed. | |
1350 | */ | |
965b5d67 TM |
1351 | case -ENOMEM: |
1352 | err = 0; | |
1353 | goto out; | |
1da177e4 LT |
1354 | } |
1355 | err = nfs4_handle_exception(server, err, &exception); | |
1356 | } while (exception.retry); | |
965b5d67 | 1357 | out: |
1da177e4 LT |
1358 | return err; |
1359 | } | |
1360 | ||
cdd4e68b TM |
1361 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1362 | { | |
1363 | struct nfs4_opendata *data = calldata; | |
1364 | ||
1365 | data->rpc_status = task->tk_status; | |
26e976a8 | 1366 | if (data->rpc_status == 0) { |
f597c537 | 1367 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 1368 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1369 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1370 | data->rpc_done = 1; |
26e976a8 | 1371 | } |
cdd4e68b TM |
1372 | } |
1373 | ||
1374 | static void nfs4_open_confirm_release(void *calldata) | |
1375 | { | |
1376 | struct nfs4_opendata *data = calldata; | |
1377 | struct nfs4_state *state = NULL; | |
1378 | ||
1379 | /* If this request hasn't been cancelled, do nothing */ | |
1380 | if (data->cancelled == 0) | |
1381 | goto out_free; | |
1382 | /* In case of error, no cleanup! */ | |
3e309914 | 1383 | if (!data->rpc_done) |
cdd4e68b | 1384 | goto out_free; |
cdd4e68b | 1385 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1386 | if (!IS_ERR(state)) |
643168c2 | 1387 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1388 | out_free: |
c6d00e63 | 1389 | nfs4_opendata_put(data); |
cdd4e68b TM |
1390 | } |
1391 | ||
1392 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1393 | .rpc_call_done = nfs4_open_confirm_done, |
1394 | .rpc_release = nfs4_open_confirm_release, | |
1395 | }; | |
1396 | ||
1397 | /* | |
1398 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1399 | */ | |
1400 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1401 | { | |
1402 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1403 | struct rpc_task *task; | |
5138fde0 TM |
1404 | struct rpc_message msg = { |
1405 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1406 | .rpc_argp = &data->c_arg, | |
1407 | .rpc_resp = &data->c_res, | |
1408 | .rpc_cred = data->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 TM |
1413 | .callback_ops = &nfs4_open_confirm_ops, |
1414 | .callback_data = data, | |
101070ca | 1415 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1416 | .flags = RPC_TASK_ASYNC, |
1417 | }; | |
1da177e4 LT |
1418 | int status; |
1419 | ||
c6d00e63 | 1420 | kref_get(&data->kref); |
3e309914 TM |
1421 | data->rpc_done = 0; |
1422 | data->rpc_status = 0; | |
5138fde0 | 1423 | data->timestamp = jiffies; |
c970aa85 | 1424 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1425 | if (IS_ERR(task)) |
cdd4e68b | 1426 | return PTR_ERR(task); |
cdd4e68b TM |
1427 | status = nfs4_wait_for_completion_rpc_task(task); |
1428 | if (status != 0) { | |
1429 | data->cancelled = 1; | |
1430 | smp_wmb(); | |
1431 | } else | |
1432 | status = data->rpc_status; | |
e6b3c4db | 1433 | rpc_put_task(task); |
1da177e4 LT |
1434 | return status; |
1435 | } | |
1436 | ||
24ac23ab | 1437 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1438 | { |
24ac23ab TM |
1439 | struct nfs4_opendata *data = calldata; |
1440 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 1441 | |
24ac23ab TM |
1442 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
1443 | return; | |
aac00a8d TM |
1444 | /* |
1445 | * Check if we still need to send an OPEN call, or if we can use | |
1446 | * a delegation instead. | |
1447 | */ | |
1448 | if (data->state != NULL) { | |
1449 | struct nfs_delegation *delegation; | |
1450 | ||
dc0b027d | 1451 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1452 | goto out_no_action; |
aac00a8d TM |
1453 | rcu_read_lock(); |
1454 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
652f89f6 TM |
1455 | if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR && |
1456 | can_open_delegated(delegation, data->o_arg.fmode)) | |
1457 | goto unlock_no_action; | |
aac00a8d TM |
1458 | rcu_read_unlock(); |
1459 | } | |
95b72eb0 | 1460 | /* Update client id. */ |
1f0e890d | 1461 | data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; |
6f220ed5 | 1462 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 1463 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
e23008ec | 1464 | data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0]; |
6f220ed5 TM |
1465 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1466 | } | |
26e976a8 | 1467 | data->timestamp = jiffies; |
035168ab | 1468 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 1469 | &data->o_arg.seq_args, |
2240a9e2 TM |
1470 | &data->o_res.seq_res, |
1471 | task) != 0) | |
1472 | nfs_release_seqid(data->o_arg.seqid); | |
1473 | else | |
1474 | rpc_call_start(task); | |
6ee41268 | 1475 | return; |
652f89f6 TM |
1476 | unlock_no_action: |
1477 | rcu_read_unlock(); | |
6ee41268 TM |
1478 | out_no_action: |
1479 | task->tk_action = NULL; | |
1480 | ||
24ac23ab | 1481 | } |
1da177e4 | 1482 | |
b257957e AB |
1483 | static void nfs4_recover_open_prepare(struct rpc_task *task, void *calldata) |
1484 | { | |
1485 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
1486 | nfs4_open_prepare(task, calldata); | |
1487 | } | |
1488 | ||
24ac23ab TM |
1489 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1490 | { | |
1491 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1492 | |
24ac23ab | 1493 | data->rpc_status = task->tk_status; |
d898528c | 1494 | |
14516c3a TM |
1495 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1496 | return; | |
d898528c | 1497 | |
24ac23ab | 1498 | if (task->tk_status == 0) { |
807d66d8 TM |
1499 | if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) { |
1500 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1501 | case S_IFREG: |
1502 | break; | |
1503 | case S_IFLNK: | |
24ac23ab | 1504 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1505 | break; |
1506 | case S_IFDIR: | |
24ac23ab | 1507 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1508 | break; |
1509 | default: | |
24ac23ab | 1510 | data->rpc_status = -ENOTDIR; |
807d66d8 | 1511 | } |
6f926b5b | 1512 | } |
26e976a8 | 1513 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1514 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1515 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1516 | } |
3e309914 | 1517 | data->rpc_done = 1; |
24ac23ab | 1518 | } |
6f926b5b | 1519 | |
24ac23ab TM |
1520 | static void nfs4_open_release(void *calldata) |
1521 | { | |
1522 | struct nfs4_opendata *data = calldata; | |
1523 | struct nfs4_state *state = NULL; | |
1524 | ||
1525 | /* If this request hasn't been cancelled, do nothing */ | |
1526 | if (data->cancelled == 0) | |
1527 | goto out_free; | |
1528 | /* In case of error, no cleanup! */ | |
3e309914 | 1529 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1530 | goto out_free; |
1531 | /* In case we need an open_confirm, no cleanup! */ | |
1532 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1533 | goto out_free; | |
24ac23ab | 1534 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1535 | if (!IS_ERR(state)) |
643168c2 | 1536 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1537 | out_free: |
c6d00e63 | 1538 | nfs4_opendata_put(data); |
24ac23ab TM |
1539 | } |
1540 | ||
1541 | static const struct rpc_call_ops nfs4_open_ops = { | |
1542 | .rpc_call_prepare = nfs4_open_prepare, | |
1543 | .rpc_call_done = nfs4_open_done, | |
1544 | .rpc_release = nfs4_open_release, | |
1545 | }; | |
1546 | ||
b257957e AB |
1547 | static const struct rpc_call_ops nfs4_recover_open_ops = { |
1548 | .rpc_call_prepare = nfs4_recover_open_prepare, | |
1549 | .rpc_call_done = nfs4_open_done, | |
1550 | .rpc_release = nfs4_open_release, | |
1551 | }; | |
1552 | ||
1553 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) | |
24ac23ab TM |
1554 | { |
1555 | struct inode *dir = data->dir->d_inode; | |
1556 | struct nfs_server *server = NFS_SERVER(dir); | |
1557 | struct nfs_openargs *o_arg = &data->o_arg; | |
1558 | struct nfs_openres *o_res = &data->o_res; | |
1559 | struct rpc_task *task; | |
5138fde0 TM |
1560 | struct rpc_message msg = { |
1561 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1562 | .rpc_argp = o_arg, | |
1563 | .rpc_resp = o_res, | |
1564 | .rpc_cred = data->owner->so_cred, | |
1565 | }; | |
c970aa85 TM |
1566 | struct rpc_task_setup task_setup_data = { |
1567 | .rpc_client = server->client, | |
5138fde0 | 1568 | .rpc_message = &msg, |
c970aa85 TM |
1569 | .callback_ops = &nfs4_open_ops, |
1570 | .callback_data = data, | |
101070ca | 1571 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1572 | .flags = RPC_TASK_ASYNC, |
1573 | }; | |
24ac23ab TM |
1574 | int status; |
1575 | ||
9d12b216 | 1576 | nfs41_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 1577 | kref_get(&data->kref); |
3e309914 TM |
1578 | data->rpc_done = 0; |
1579 | data->rpc_status = 0; | |
2ced46c2 | 1580 | data->cancelled = 0; |
b257957e AB |
1581 | if (isrecover) |
1582 | task_setup_data.callback_ops = &nfs4_recover_open_ops; | |
c970aa85 | 1583 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1584 | if (IS_ERR(task)) |
1585 | return PTR_ERR(task); | |
1586 | status = nfs4_wait_for_completion_rpc_task(task); | |
1587 | if (status != 0) { | |
1588 | data->cancelled = 1; | |
1589 | smp_wmb(); | |
1590 | } else | |
1591 | status = data->rpc_status; | |
1592 | rpc_put_task(task); | |
1593 | ||
1594 | return status; | |
1595 | } | |
1596 | ||
1597 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1598 | { | |
1599 | struct inode *dir = data->dir->d_inode; | |
1600 | struct nfs_openres *o_res = &data->o_res; | |
1601 | int status; | |
1602 | ||
1603 | status = nfs4_run_open_task(data, 1); | |
1604 | if (status != 0 || !data->rpc_done) | |
1605 | return status; | |
1606 | ||
6926afd1 TM |
1607 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
1608 | ||
b257957e AB |
1609 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
1610 | status = _nfs4_proc_open_confirm(data); | |
1611 | if (status != 0) | |
1612 | return status; | |
1613 | } | |
1614 | ||
1615 | return status; | |
1616 | } | |
1617 | ||
6168f62c WAA |
1618 | static int nfs4_opendata_access(struct rpc_cred *cred, |
1619 | struct nfs4_opendata *opendata, | |
1620 | struct nfs4_state *state, fmode_t fmode) | |
1621 | { | |
1622 | struct nfs_access_entry cache; | |
1623 | u32 mask; | |
1624 | ||
1625 | /* access call failed or for some reason the server doesn't | |
1626 | * support any access modes -- defer access call until later */ | |
1627 | if (opendata->o_res.access_supported == 0) | |
1628 | return 0; | |
1629 | ||
1630 | mask = 0; | |
bbd3a8ee WAA |
1631 | /* don't check MAY_WRITE - a newly created file may not have |
1632 | * write mode bits, but POSIX allows the creating process to write */ | |
6168f62c WAA |
1633 | if (fmode & FMODE_READ) |
1634 | mask |= MAY_READ; | |
6168f62c WAA |
1635 | if (fmode & FMODE_EXEC) |
1636 | mask |= MAY_EXEC; | |
1637 | ||
1638 | cache.cred = cred; | |
1639 | cache.jiffies = jiffies; | |
1640 | nfs_access_set_mask(&cache, opendata->o_res.access_result); | |
1641 | nfs_access_add_cache(state->inode, &cache); | |
1642 | ||
bbd3a8ee | 1643 | if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0) |
6168f62c WAA |
1644 | return 0; |
1645 | ||
1646 | /* even though OPEN succeeded, access is denied. Close the file */ | |
1647 | nfs4_close_state(state, fmode); | |
998f40b5 | 1648 | return -EACCES; |
6168f62c WAA |
1649 | } |
1650 | ||
b257957e AB |
1651 | /* |
1652 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1653 | */ | |
1654 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1655 | { | |
1656 | struct inode *dir = data->dir->d_inode; | |
1657 | struct nfs_server *server = NFS_SERVER(dir); | |
1658 | struct nfs_openargs *o_arg = &data->o_arg; | |
1659 | struct nfs_openres *o_res = &data->o_res; | |
1660 | int status; | |
1661 | ||
1662 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
1663 | if (!data->rpc_done) |
1664 | return status; | |
1665 | if (status != 0) { | |
1666 | if (status == -NFS4ERR_BADNAME && | |
1667 | !(o_arg->open_flags & O_CREAT)) | |
1668 | return -ENOENT; | |
24ac23ab | 1669 | return status; |
08ef7bd3 | 1670 | } |
24ac23ab | 1671 | |
6926afd1 TM |
1672 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
1673 | ||
90ff0c54 | 1674 | if (o_arg->open_flags & O_CREAT) |
56ae19f3 | 1675 | update_changeattr(dir, &o_res->cinfo); |
0df5dd4a TM |
1676 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1677 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1678 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1679 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1680 | if (status != 0) |
24ac23ab | 1681 | return status; |
1da177e4 LT |
1682 | } |
1683 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1684 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1685 | return 0; |
1da177e4 LT |
1686 | } |
1687 | ||
d83217c1 AA |
1688 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1689 | { | |
1690 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1691 | } | |
1692 | ||
1da177e4 LT |
1693 | /* |
1694 | * OPEN_EXPIRED: | |
1695 | * reclaim state on the server after a network partition. | |
1696 | * Assumes caller holds the appropriate lock | |
1697 | */ | |
539cd03a | 1698 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1699 | { |
e56e0b78 | 1700 | struct nfs4_opendata *opendata; |
864472e9 | 1701 | int ret; |
1da177e4 | 1702 | |
6f220ed5 TM |
1703 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1704 | if (IS_ERR(opendata)) | |
1705 | return PTR_ERR(opendata); | |
864472e9 | 1706 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1707 | if (ret == -ESTALE) |
3d4ff43d | 1708 | d_drop(ctx->dentry); |
c6d00e63 | 1709 | nfs4_opendata_put(opendata); |
864472e9 | 1710 | return ret; |
1da177e4 LT |
1711 | } |
1712 | ||
a9ed2e25 | 1713 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1714 | { |
539cd03a | 1715 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1716 | struct nfs4_exception exception = { }; |
1717 | int err; | |
1718 | ||
1719 | do { | |
539cd03a | 1720 | err = _nfs4_open_expired(ctx, state); |
a9ed2e25 TM |
1721 | switch (err) { |
1722 | default: | |
1723 | goto out; | |
1724 | case -NFS4ERR_GRACE: | |
1725 | case -NFS4ERR_DELAY: | |
1726 | nfs4_handle_exception(server, err, &exception); | |
1727 | err = 0; | |
1728 | } | |
202b50dc | 1729 | } while (exception.retry); |
a9ed2e25 | 1730 | out: |
202b50dc TM |
1731 | return err; |
1732 | } | |
1733 | ||
1da177e4 LT |
1734 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1735 | { | |
1da177e4 | 1736 | struct nfs_open_context *ctx; |
864472e9 | 1737 | int ret; |
1da177e4 | 1738 | |
864472e9 TM |
1739 | ctx = nfs4_state_find_open_context(state); |
1740 | if (IS_ERR(ctx)) | |
1741 | return PTR_ERR(ctx); | |
539cd03a | 1742 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1743 | put_nfs_open_context(ctx); |
1744 | return ret; | |
1da177e4 LT |
1745 | } |
1746 | ||
f062eb6c | 1747 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd | 1748 | static void nfs41_clear_delegation_stateid(struct nfs4_state *state) |
f062eb6c | 1749 | { |
f062eb6c | 1750 | struct nfs_server *server = NFS_SERVER(state->inode); |
3e60ffdd CL |
1751 | nfs4_stateid *stateid = &state->stateid; |
1752 | int status; | |
1753 | ||
1754 | /* If a state reset has been done, test_stateid is unneeded */ | |
1755 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
1756 | return; | |
1757 | ||
1758 | status = nfs41_test_stateid(server, stateid); | |
1759 | if (status != NFS_OK) { | |
1760 | /* Free the stateid unless the server explicitly | |
1761 | * informs us the stateid is unrecognized. */ | |
1762 | if (status != -NFS4ERR_BAD_STATEID) | |
1763 | nfs41_free_stateid(server, stateid); | |
6938867e | 1764 | nfs_remove_bad_delegation(state->inode); |
3e60ffdd | 1765 | |
6938867e BS |
1766 | write_seqlock(&state->seqlock); |
1767 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
1768 | write_sequnlock(&state->seqlock); | |
3e60ffdd CL |
1769 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
1770 | } | |
1771 | } | |
1772 | ||
1773 | /** | |
1774 | * nfs41_check_open_stateid - possibly free an open stateid | |
1775 | * | |
1776 | * @state: NFSv4 state for an inode | |
1777 | * | |
1778 | * Returns NFS_OK if recovery for this stateid is now finished. | |
1779 | * Otherwise a negative NFS4ERR value is returned. | |
1780 | */ | |
1781 | static int nfs41_check_open_stateid(struct nfs4_state *state) | |
1782 | { | |
1783 | struct nfs_server *server = NFS_SERVER(state->inode); | |
fcb6d9c6 | 1784 | nfs4_stateid *stateid = &state->open_stateid; |
3e60ffdd CL |
1785 | int status; |
1786 | ||
1787 | /* If a state reset has been done, test_stateid is unneeded */ | |
1788 | if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) && | |
1789 | (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) && | |
1790 | (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0)) | |
1791 | return -NFS4ERR_BAD_STATEID; | |
1792 | ||
1793 | status = nfs41_test_stateid(server, stateid); | |
1794 | if (status != NFS_OK) { | |
1795 | /* Free the stateid unless the server explicitly | |
1796 | * informs us the stateid is unrecognized. */ | |
1797 | if (status != -NFS4ERR_BAD_STATEID) | |
1798 | nfs41_free_stateid(server, stateid); | |
1799 | ||
1800 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1801 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1802 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
b01dd1d8 BS |
1803 | } |
1804 | return status; | |
1805 | } | |
1806 | ||
1807 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
1808 | { | |
eb64cf96 | 1809 | int status; |
b01dd1d8 | 1810 | |
3e60ffdd CL |
1811 | nfs41_clear_delegation_stateid(state); |
1812 | status = nfs41_check_open_stateid(state); | |
eb64cf96 CL |
1813 | if (status != NFS_OK) |
1814 | status = nfs4_open_expired(sp, state); | |
1815 | return status; | |
f062eb6c BS |
1816 | } |
1817 | #endif | |
1818 | ||
aa53ed54 JL |
1819 | /* |
1820 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1821 | * fields corresponding to attributes that were used to store the verifier. | |
1822 | * Make sure we clobber those fields in the later setattr call | |
1823 | */ | |
1824 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1825 | { | |
1826 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1827 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1828 | sattr->ia_valid |= ATTR_ATIME; | |
1829 | ||
1830 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1831 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1832 | sattr->ia_valid |= ATTR_MTIME; | |
1833 | } | |
1834 | ||
1da177e4 | 1835 | /* |
24ac23ab | 1836 | * Returns a referenced nfs4_state |
1da177e4 | 1837 | */ |
82be417a AA |
1838 | static int _nfs4_do_open(struct inode *dir, |
1839 | struct dentry *dentry, | |
1840 | fmode_t fmode, | |
1841 | int flags, | |
1842 | struct iattr *sattr, | |
1843 | struct rpc_cred *cred, | |
1844 | struct nfs4_state **res, | |
1845 | struct nfs4_threshold **ctx_th) | |
1da177e4 LT |
1846 | { |
1847 | struct nfs4_state_owner *sp; | |
1848 | struct nfs4_state *state = NULL; | |
1849 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1850 | struct nfs4_opendata *opendata; |
aac00a8d | 1851 | int status; |
1da177e4 LT |
1852 | |
1853 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 1854 | status = -ENOMEM; |
d1e284d5 TM |
1855 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
1856 | if (sp == NULL) { | |
1da177e4 LT |
1857 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
1858 | goto out_err; | |
1859 | } | |
58d9714a TM |
1860 | status = nfs4_recover_expired_lease(server); |
1861 | if (status != 0) | |
b4454fe1 | 1862 | goto err_put_state_owner; |
82a2c1b7 AV |
1863 | if (dentry->d_inode != NULL) |
1864 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 1865 | status = -ENOMEM; |
82a2c1b7 | 1866 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, GFP_KERNEL); |
e56e0b78 | 1867 | if (opendata == NULL) |
95d35cb4 | 1868 | goto err_put_state_owner; |
1da177e4 | 1869 | |
82be417a AA |
1870 | if (ctx_th && server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
1871 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
1872 | if (!opendata->f_attr.mdsthreshold) | |
1873 | goto err_opendata_put; | |
1549210f | 1874 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 1875 | } |
82a2c1b7 AV |
1876 | if (dentry->d_inode != NULL) |
1877 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 1878 | |
24ac23ab | 1879 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1880 | if (status != 0) |
c6d00e63 | 1881 | goto err_opendata_put; |
1da177e4 | 1882 | |
24ac23ab | 1883 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1884 | status = PTR_ERR(state); |
1885 | if (IS_ERR(state)) | |
c6d00e63 | 1886 | goto err_opendata_put; |
0df5dd4a | 1887 | if (server->caps & NFS_CAP_POSIX_LOCK) |
8e469ebd | 1888 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); |
0ab64e0e | 1889 | |
6168f62c WAA |
1890 | status = nfs4_opendata_access(cred, opendata, state, fmode); |
1891 | if (status != 0) | |
1892 | goto err_opendata_put; | |
1893 | ||
0ab64e0e TM |
1894 | if (opendata->o_arg.open_flags & O_EXCL) { |
1895 | nfs4_exclusive_attrset(opendata, sattr); | |
1896 | ||
1897 | nfs_fattr_init(opendata->o_res.f_attr); | |
1898 | status = nfs4_do_setattr(state->inode, cred, | |
1899 | opendata->o_res.f_attr, sattr, | |
1900 | state); | |
1901 | if (status == 0) | |
1902 | nfs_setattr_update_inode(state->inode, sattr); | |
1903 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
1904 | } | |
82be417a AA |
1905 | |
1906 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) | |
1907 | *ctx_th = opendata->f_attr.mdsthreshold; | |
1908 | else | |
1909 | kfree(opendata->f_attr.mdsthreshold); | |
1910 | opendata->f_attr.mdsthreshold = NULL; | |
1911 | ||
c6d00e63 | 1912 | nfs4_opendata_put(opendata); |
1da177e4 | 1913 | nfs4_put_state_owner(sp); |
1da177e4 LT |
1914 | *res = state; |
1915 | return 0; | |
c6d00e63 | 1916 | err_opendata_put: |
82be417a | 1917 | kfree(opendata->f_attr.mdsthreshold); |
c6d00e63 | 1918 | nfs4_opendata_put(opendata); |
e56e0b78 TM |
1919 | err_put_state_owner: |
1920 | nfs4_put_state_owner(sp); | |
1da177e4 | 1921 | out_err: |
1da177e4 LT |
1922 | *res = NULL; |
1923 | return status; | |
1924 | } | |
1925 | ||
1926 | ||
82be417a AA |
1927 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
1928 | struct dentry *dentry, | |
1929 | fmode_t fmode, | |
1930 | int flags, | |
1931 | struct iattr *sattr, | |
1932 | struct rpc_cred *cred, | |
1933 | struct nfs4_threshold **ctx_th) | |
1da177e4 LT |
1934 | { |
1935 | struct nfs4_exception exception = { }; | |
1936 | struct nfs4_state *res; | |
1937 | int status; | |
1938 | ||
6168f62c | 1939 | fmode &= FMODE_READ|FMODE_WRITE|FMODE_EXEC; |
1da177e4 | 1940 | do { |
82be417a AA |
1941 | status = _nfs4_do_open(dir, dentry, fmode, flags, sattr, cred, |
1942 | &res, ctx_th); | |
1da177e4 LT |
1943 | if (status == 0) |
1944 | break; | |
1945 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1946 | * book-keeping w.r.t. state-changing operations | |
1947 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1948 | * It is actually a sign of a bug on the client or on the server. | |
1949 | * | |
1950 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1951 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1952 | * have unhashed the old state_owner for us, and that we can |
1953 | * therefore safely retry using a new one. We should still warn | |
1954 | * the user though... | |
1955 | */ | |
1956 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 1957 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
1958 | " returned a bad sequence-id error!\n", |
1959 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1960 | exception.retry = 1; |
1961 | continue; | |
1962 | } | |
550f5747 TM |
1963 | /* |
1964 | * BAD_STATEID on OPEN means that the server cancelled our | |
1965 | * state before it received the OPEN_CONFIRM. | |
1966 | * Recover by retrying the request as per the discussion | |
1967 | * on Page 181 of RFC3530. | |
1968 | */ | |
1969 | if (status == -NFS4ERR_BAD_STATEID) { | |
1970 | exception.retry = 1; | |
1971 | continue; | |
1972 | } | |
aac00a8d TM |
1973 | if (status == -EAGAIN) { |
1974 | /* We must have found a delegation */ | |
1975 | exception.retry = 1; | |
1976 | continue; | |
1977 | } | |
1da177e4 LT |
1978 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1979 | status, &exception)); | |
1980 | } while (exception.retry); | |
1981 | return res; | |
1982 | } | |
1983 | ||
659bfcd6 TM |
1984 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1985 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1986 | struct nfs4_state *state) | |
1da177e4 | 1987 | { |
3e4f6290 | 1988 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1989 | struct nfs_setattrargs arg = { |
3e4f6290 | 1990 | .fh = NFS_FH(inode), |
1da177e4 LT |
1991 | .iap = sattr, |
1992 | .server = server, | |
1993 | .bitmask = server->attr_bitmask, | |
1994 | }; | |
1995 | struct nfs_setattrres res = { | |
1996 | .fattr = fattr, | |
1997 | .server = server, | |
1998 | }; | |
1999 | struct rpc_message msg = { | |
659bfcd6 TM |
2000 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
2001 | .rpc_argp = &arg, | |
2002 | .rpc_resp = &res, | |
2003 | .rpc_cred = cred, | |
1da177e4 | 2004 | }; |
26e976a8 | 2005 | unsigned long timestamp = jiffies; |
65e4308d | 2006 | int status; |
1da177e4 | 2007 | |
0e574af1 | 2008 | nfs_fattr_init(fattr); |
1da177e4 | 2009 | |
4fc8796d | 2010 | if (state != NULL) { |
2a369153 TM |
2011 | struct nfs_lockowner lockowner = { |
2012 | .l_owner = current->files, | |
2013 | .l_pid = current->tgid, | |
2014 | }; | |
4fc8796d | 2015 | nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, |
2a369153 | 2016 | &lockowner); |
4fc8796d TM |
2017 | } else if (nfs4_copy_delegation_stateid(&arg.stateid, inode, |
2018 | FMODE_WRITE)) { | |
3e4f6290 | 2019 | /* Use that stateid */ |
08e9eac4 | 2020 | } else |
f597c537 | 2021 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 2022 | |
7c513058 | 2023 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
2024 | if (status == 0 && state != NULL) |
2025 | renew_lease(server, timestamp); | |
65e4308d | 2026 | return status; |
1da177e4 LT |
2027 | } |
2028 | ||
659bfcd6 TM |
2029 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2030 | struct nfs_fattr *fattr, struct iattr *sattr, | |
2031 | struct nfs4_state *state) | |
1da177e4 | 2032 | { |
3e4f6290 | 2033 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
2034 | struct nfs4_exception exception = { |
2035 | .state = state, | |
3114ea7a | 2036 | .inode = inode, |
a1d0b5ee | 2037 | }; |
1da177e4 LT |
2038 | int err; |
2039 | do { | |
451146be TM |
2040 | err = _nfs4_do_setattr(inode, cred, fattr, sattr, state); |
2041 | switch (err) { | |
2042 | case -NFS4ERR_OPENMODE: | |
2043 | if (state && !(state->state & FMODE_WRITE)) { | |
2044 | err = -EBADF; | |
2045 | if (sattr->ia_valid & ATTR_OPEN) | |
2046 | err = -EACCES; | |
2047 | goto out; | |
2048 | } | |
2049 | } | |
2050 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 2051 | } while (exception.retry); |
451146be | 2052 | out: |
1da177e4 LT |
2053 | return err; |
2054 | } | |
2055 | ||
2056 | struct nfs4_closedata { | |
2057 | struct inode *inode; | |
2058 | struct nfs4_state *state; | |
2059 | struct nfs_closeargs arg; | |
2060 | struct nfs_closeres res; | |
516a6af6 | 2061 | struct nfs_fattr fattr; |
26e976a8 | 2062 | unsigned long timestamp; |
f7e8917a FI |
2063 | bool roc; |
2064 | u32 roc_barrier; | |
1da177e4 LT |
2065 | }; |
2066 | ||
963d8fe5 | 2067 | static void nfs4_free_closedata(void *data) |
9512135d | 2068 | { |
963d8fe5 TM |
2069 | struct nfs4_closedata *calldata = data; |
2070 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 2071 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 2072 | |
f7e8917a FI |
2073 | if (calldata->roc) |
2074 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
2075 | nfs4_put_open_state(calldata->state); |
2076 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 2077 | nfs4_put_state_owner(sp); |
324d003b | 2078 | nfs_sb_deactive_async(sb); |
9512135d TM |
2079 | kfree(calldata); |
2080 | } | |
2081 | ||
88069f77 TM |
2082 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
2083 | fmode_t fmode) | |
2084 | { | |
2085 | spin_lock(&state->owner->so_lock); | |
2086 | if (!(fmode & FMODE_READ)) | |
2087 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2088 | if (!(fmode & FMODE_WRITE)) | |
2089 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2090 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
2091 | spin_unlock(&state->owner->so_lock); | |
2092 | } | |
2093 | ||
963d8fe5 | 2094 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2095 | { |
963d8fe5 | 2096 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2097 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
2098 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
2099 | ||
a3ca5651 | 2100 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2101 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2102 | return; | |
1da177e4 LT |
2103 | /* hmm. we are done with the inode, and in the process of freeing |
2104 | * the state_owner. we keep this around to process errors | |
2105 | */ | |
1da177e4 LT |
2106 | switch (task->tk_status) { |
2107 | case 0: | |
f7e8917a FI |
2108 | if (calldata->roc) |
2109 | pnfs_roc_set_barrier(state->inode, | |
2110 | calldata->roc_barrier); | |
45328c35 | 2111 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 2112 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
2113 | nfs4_close_clear_stateid_flags(state, |
2114 | calldata->arg.fmode); | |
1da177e4 LT |
2115 | break; |
2116 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
2117 | case -NFS4ERR_OLD_STATEID: |
2118 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2119 | case -NFS4ERR_EXPIRED: |
dc0b027d | 2120 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2121 | break; |
1da177e4 | 2122 | default: |
72211dbe TM |
2123 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
2124 | rpc_restart_call_prepare(task); | |
1da177e4 | 2125 | } |
72211dbe | 2126 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2127 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2128 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2129 | } |
2130 | ||
4ce70ada | 2131 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2132 | { |
4ce70ada | 2133 | struct nfs4_closedata *calldata = data; |
9512135d | 2134 | struct nfs4_state *state = calldata->state; |
7fdab069 | 2135 | struct inode *inode = calldata->inode; |
88069f77 | 2136 | int call_close = 0; |
9512135d | 2137 | |
a3ca5651 | 2138 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2139 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 2140 | return; |
003707c7 | 2141 | |
88069f77 TM |
2142 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
2143 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 2144 | spin_lock(&state->owner->so_lock); |
003707c7 | 2145 | /* Calculate the change in open mode */ |
e7616923 | 2146 | if (state->n_rdwr == 0) { |
003707c7 | 2147 | if (state->n_rdonly == 0) { |
88069f77 TM |
2148 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
2149 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2150 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
2151 | } |
2152 | if (state->n_wronly == 0) { | |
88069f77 TM |
2153 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
2154 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2155 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 2156 | } |
e7616923 | 2157 | } |
4cecb76f | 2158 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2159 | |
2160 | if (!call_close) { | |
963d8fe5 TM |
2161 | /* Note: exit _without_ calling nfs4_close_done */ |
2162 | task->tk_action = NULL; | |
a3ca5651 | 2163 | goto out; |
9512135d | 2164 | } |
88069f77 | 2165 | |
f7e8917a | 2166 | if (calldata->arg.fmode == 0) { |
88069f77 | 2167 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a | 2168 | if (calldata->roc && |
7fdab069 | 2169 | pnfs_roc_drain(inode, &calldata->roc_barrier, task)) |
a3ca5651 | 2170 | goto out; |
f7e8917a | 2171 | } |
88069f77 | 2172 | |
516a6af6 | 2173 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2174 | calldata->timestamp = jiffies; |
7fdab069 | 2175 | if (nfs4_setup_sequence(NFS_SERVER(inode), |
9d12b216 TM |
2176 | &calldata->arg.seq_args, |
2177 | &calldata->res.seq_res, | |
2240a9e2 TM |
2178 | task) != 0) |
2179 | nfs_release_seqid(calldata->arg.seqid); | |
2180 | else | |
2181 | rpc_call_start(task); | |
a3ca5651 CL |
2182 | out: |
2183 | dprintk("%s: done!\n", __func__); | |
1da177e4 LT |
2184 | } |
2185 | ||
963d8fe5 | 2186 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2187 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2188 | .rpc_call_done = nfs4_close_done, |
2189 | .rpc_release = nfs4_free_closedata, | |
2190 | }; | |
2191 | ||
1da177e4 LT |
2192 | /* |
2193 | * It is possible for data to be read/written from a mem-mapped file | |
2194 | * after the sys_close call (which hits the vfs layer as a flush). | |
2195 | * This means that we can't safely call nfsv4 close on a file until | |
2196 | * the inode is cleared. This in turn means that we are not good | |
2197 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2198 | * share state even when we are done with one of the three share | |
2199 | * stateid's in the inode. | |
2200 | * | |
2201 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2202 | */ | |
1f7977c1 | 2203 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) |
1da177e4 | 2204 | { |
4a35bd41 | 2205 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2206 | struct nfs4_closedata *calldata; |
b39e625b TM |
2207 | struct nfs4_state_owner *sp = state->owner; |
2208 | struct rpc_task *task; | |
5138fde0 TM |
2209 | struct rpc_message msg = { |
2210 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2211 | .rpc_cred = state->owner->so_cred, | |
2212 | }; | |
c970aa85 TM |
2213 | struct rpc_task_setup task_setup_data = { |
2214 | .rpc_client = server->client, | |
5138fde0 | 2215 | .rpc_message = &msg, |
c970aa85 | 2216 | .callback_ops = &nfs4_close_ops, |
101070ca | 2217 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2218 | .flags = RPC_TASK_ASYNC, |
2219 | }; | |
9512135d | 2220 | int status = -ENOMEM; |
1da177e4 | 2221 | |
8535b2be | 2222 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2223 | if (calldata == NULL) |
9512135d | 2224 | goto out; |
9d12b216 | 2225 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2226 | calldata->inode = state->inode; |
1da177e4 | 2227 | calldata->state = state; |
4a35bd41 | 2228 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2229 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2230 | /* Serialization for the sequence id */ |
8535b2be | 2231 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2232 | if (calldata->arg.seqid == NULL) |
2233 | goto out_free_calldata; | |
dc0b027d | 2234 | calldata->arg.fmode = 0; |
a65318bf | 2235 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2236 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2237 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2238 | calldata->res.server = server; |
1f7977c1 | 2239 | calldata->roc = pnfs_roc(state->inode); |
643168c2 | 2240 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2241 | |
1174dd1f TM |
2242 | msg.rpc_argp = &calldata->arg; |
2243 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2244 | task_setup_data.callback_data = calldata; |
2245 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2246 | if (IS_ERR(task)) |
2247 | return PTR_ERR(task); | |
a49c3c77 TM |
2248 | status = 0; |
2249 | if (wait) | |
2250 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2251 | rpc_put_task(task); |
a49c3c77 | 2252 | return status; |
9512135d TM |
2253 | out_free_calldata: |
2254 | kfree(calldata); | |
2255 | out: | |
b39e625b TM |
2256 | nfs4_put_open_state(state); |
2257 | nfs4_put_state_owner(sp); | |
9512135d | 2258 | return status; |
1da177e4 LT |
2259 | } |
2260 | ||
2b484297 | 2261 | static struct inode * |
cd9a1c0e | 2262 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2263 | { |
1da177e4 | 2264 | struct nfs4_state *state; |
1da177e4 | 2265 | |
565277f6 | 2266 | /* Protect against concurrent sillydeletes */ |
82be417a AA |
2267 | state = nfs4_do_open(dir, ctx->dentry, ctx->mode, open_flags, attr, |
2268 | ctx->cred, &ctx->mdsthreshold); | |
f46e0bd3 TM |
2269 | if (IS_ERR(state)) |
2270 | return ERR_CAST(state); | |
cd9a1c0e | 2271 | ctx->state = state; |
f46e0bd3 | 2272 | return igrab(state->inode); |
1da177e4 LT |
2273 | } |
2274 | ||
1185a552 | 2275 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2276 | { |
2277 | if (ctx->state == NULL) | |
2278 | return; | |
2279 | if (is_sync) | |
643168c2 | 2280 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2281 | else |
643168c2 | 2282 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2283 | } |
1da177e4 LT |
2284 | |
2285 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2286 | { | |
43652ad5 BH |
2287 | struct nfs4_server_caps_arg args = { |
2288 | .fhandle = fhandle, | |
2289 | }; | |
1da177e4 LT |
2290 | struct nfs4_server_caps_res res = {}; |
2291 | struct rpc_message msg = { | |
2292 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2293 | .rpc_argp = &args, |
1da177e4 LT |
2294 | .rpc_resp = &res, |
2295 | }; | |
2296 | int status; | |
2297 | ||
7c513058 | 2298 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2299 | if (status == 0) { |
2300 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2301 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2302 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2303 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2304 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2305 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2306 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2307 | server->caps |= NFS_CAP_ACLS; | |
2308 | if (res.has_links != 0) | |
2309 | server->caps |= NFS_CAP_HARDLINKS; | |
2310 | if (res.has_symlinks != 0) | |
2311 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2312 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2313 | server->caps |= NFS_CAP_FILEID; | |
2314 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2315 | server->caps |= NFS_CAP_MODE; | |
2316 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2317 | server->caps |= NFS_CAP_NLINK; | |
2318 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2319 | server->caps |= NFS_CAP_OWNER; | |
2320 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2321 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2322 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2323 | server->caps |= NFS_CAP_ATIME; | |
2324 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2325 | server->caps |= NFS_CAP_CTIME; | |
2326 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2327 | server->caps |= NFS_CAP_MTIME; | |
2328 | ||
a65318bf TM |
2329 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2330 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2331 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 | 2332 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 2333 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 2334 | } |
cccef3b9 | 2335 | |
1da177e4 LT |
2336 | return status; |
2337 | } | |
2338 | ||
55a97593 | 2339 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2340 | { |
2341 | struct nfs4_exception exception = { }; | |
2342 | int err; | |
2343 | do { | |
2344 | err = nfs4_handle_exception(server, | |
2345 | _nfs4_server_capabilities(server, fhandle), | |
2346 | &exception); | |
2347 | } while (exception.retry); | |
2348 | return err; | |
2349 | } | |
2350 | ||
2351 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2352 | struct nfs_fsinfo *info) | |
2353 | { | |
1da177e4 LT |
2354 | struct nfs4_lookup_root_arg args = { |
2355 | .bitmask = nfs4_fattr_bitmap, | |
2356 | }; | |
2357 | struct nfs4_lookup_res res = { | |
2358 | .server = server, | |
0e574af1 | 2359 | .fattr = info->fattr, |
1da177e4 LT |
2360 | .fh = fhandle, |
2361 | }; | |
2362 | struct rpc_message msg = { | |
2363 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2364 | .rpc_argp = &args, | |
2365 | .rpc_resp = &res, | |
2366 | }; | |
008f55d0 | 2367 | |
0e574af1 | 2368 | nfs_fattr_init(info->fattr); |
7c513058 | 2369 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2370 | } |
2371 | ||
2372 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2373 | struct nfs_fsinfo *info) | |
2374 | { | |
2375 | struct nfs4_exception exception = { }; | |
2376 | int err; | |
2377 | do { | |
fb8a5ba8 BS |
2378 | err = _nfs4_lookup_root(server, fhandle, info); |
2379 | switch (err) { | |
2380 | case 0: | |
2381 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 2382 | goto out; |
fb8a5ba8 BS |
2383 | default: |
2384 | err = nfs4_handle_exception(server, err, &exception); | |
2385 | } | |
1da177e4 | 2386 | } while (exception.retry); |
05e9cfb4 | 2387 | out: |
1da177e4 LT |
2388 | return err; |
2389 | } | |
2390 | ||
8f70e95f BS |
2391 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2392 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2393 | { | |
2394 | struct rpc_auth *auth; | |
2395 | int ret; | |
2396 | ||
2397 | auth = rpcauth_create(flavor, server->client); | |
e8d920c5 | 2398 | if (IS_ERR(auth)) { |
8f70e95f BS |
2399 | ret = -EIO; |
2400 | goto out; | |
2401 | } | |
2402 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2403 | out: |
2404 | return ret; | |
2405 | } | |
2406 | ||
801a16dc | 2407 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2408 | struct nfs_fsinfo *info) |
1da177e4 | 2409 | { |
8f70e95f | 2410 | int i, len, status = 0; |
0fabee24 | 2411 | rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS]; |
1da177e4 | 2412 | |
6a1a1e34 | 2413 | len = rpcauth_list_flavors(flav_array, ARRAY_SIZE(flav_array)); |
4ea8fed5 TM |
2414 | if (len < 0) |
2415 | return len; | |
8f70e95f BS |
2416 | |
2417 | for (i = 0; i < len; i++) { | |
6a1a1e34 CL |
2418 | /* AUTH_UNIX is the default flavor if none was specified, |
2419 | * thus has already been tried. */ | |
2420 | if (flav_array[i] == RPC_AUTH_UNIX) | |
2421 | continue; | |
2422 | ||
8f70e95f | 2423 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); |
fb8a5ba8 | 2424 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2425 | continue; |
2426 | break; | |
8f70e95f | 2427 | } |
fb8a5ba8 BS |
2428 | /* |
2429 | * -EACCESS could mean that the user doesn't have correct permissions | |
2430 | * to access the mount. It could also mean that we tried to mount | |
2431 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2432 | * existing mount programs don't handle -EACCES very well so it should | |
2433 | * be mapped to -EPERM instead. | |
2434 | */ | |
2435 | if (status == -EACCES) | |
2436 | status = -EPERM; | |
801a16dc BS |
2437 | return status; |
2438 | } | |
2439 | ||
2440 | /* | |
2441 | * get the file handle for the "/" directory on the server | |
2442 | */ | |
3028eb2b BS |
2443 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
2444 | struct nfs_fsinfo *info) | |
801a16dc | 2445 | { |
fca78d6d | 2446 | int minor_version = server->nfs_client->cl_minorversion; |
801a16dc | 2447 | int status = nfs4_lookup_root(server, fhandle, info); |
fb8a5ba8 BS |
2448 | if ((status == -NFS4ERR_WRONGSEC) && !(server->flags & NFS_MOUNT_SECFLAVOUR)) |
2449 | /* | |
2450 | * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM | |
2451 | * by nfs4_map_errors() as this function exits. | |
2452 | */ | |
fca78d6d | 2453 | status = nfs_v4_minor_ops[minor_version]->find_root_sec(server, fhandle, info); |
1da177e4 LT |
2454 | if (status == 0) |
2455 | status = nfs4_server_capabilities(server, fhandle); | |
2456 | if (status == 0) | |
2457 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2458 | return nfs4_map_errors(status); |
1da177e4 LT |
2459 | } |
2460 | ||
bae36241 BS |
2461 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
2462 | struct nfs_fsinfo *info) | |
2463 | { | |
2464 | int error; | |
2465 | struct nfs_fattr *fattr = info->fattr; | |
2466 | ||
2467 | error = nfs4_server_capabilities(server, mntfh); | |
2468 | if (error < 0) { | |
2469 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
2470 | return error; | |
2471 | } | |
2472 | ||
2473 | error = nfs4_proc_getattr(server, mntfh, fattr); | |
2474 | if (error < 0) { | |
2475 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
2476 | return error; | |
2477 | } | |
2478 | ||
2479 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
2480 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
2481 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
2482 | ||
2483 | return error; | |
2484 | } | |
2485 | ||
6b97fd3d MN |
2486 | /* |
2487 | * Get locations and (maybe) other attributes of a referral. | |
2488 | * Note that we'll actually follow the referral later when | |
2489 | * we detect fsid mismatch in inode revalidation | |
2490 | */ | |
f05d147f BS |
2491 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
2492 | const struct qstr *name, struct nfs_fattr *fattr, | |
2493 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
2494 | { |
2495 | int status = -ENOMEM; | |
2496 | struct page *page = NULL; | |
2497 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2498 | |
2499 | page = alloc_page(GFP_KERNEL); | |
2500 | if (page == NULL) | |
2501 | goto out; | |
2502 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2503 | if (locations == NULL) | |
2504 | goto out; | |
2505 | ||
f05d147f | 2506 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
2507 | if (status != 0) |
2508 | goto out; | |
2509 | /* Make sure server returned a different fsid for the referral */ | |
2510 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2511 | dprintk("%s: server did not return a different fsid for" |
2512 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2513 | status = -EIO; |
2514 | goto out; | |
2515 | } | |
533eb461 AA |
2516 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2517 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2518 | |
533eb461 | 2519 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2520 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2521 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2522 | out: | |
2523 | if (page) | |
2524 | __free_page(page); | |
5d7ca35a | 2525 | kfree(locations); |
6b97fd3d MN |
2526 | return status; |
2527 | } | |
2528 | ||
1da177e4 LT |
2529 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2530 | { | |
2531 | struct nfs4_getattr_arg args = { | |
2532 | .fh = fhandle, | |
2533 | .bitmask = server->attr_bitmask, | |
2534 | }; | |
2535 | struct nfs4_getattr_res res = { | |
2536 | .fattr = fattr, | |
2537 | .server = server, | |
2538 | }; | |
2539 | struct rpc_message msg = { | |
2540 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2541 | .rpc_argp = &args, | |
2542 | .rpc_resp = &res, | |
2543 | }; | |
2544 | ||
0e574af1 | 2545 | nfs_fattr_init(fattr); |
7c513058 | 2546 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2547 | } |
2548 | ||
2549 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2550 | { | |
2551 | struct nfs4_exception exception = { }; | |
2552 | int err; | |
2553 | do { | |
2554 | err = nfs4_handle_exception(server, | |
2555 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2556 | &exception); | |
2557 | } while (exception.retry); | |
2558 | return err; | |
2559 | } | |
2560 | ||
2561 | /* | |
2562 | * The file is not closed if it is opened due to the a request to change | |
2563 | * the size of the file. The open call will not be needed once the | |
2564 | * VFS layer lookup-intents are implemented. | |
2565 | * | |
2566 | * Close is called when the inode is destroyed. | |
2567 | * If we haven't opened the file for O_WRONLY, we | |
2568 | * need to in the size_change case to obtain a stateid. | |
2569 | * | |
2570 | * Got race? | |
2571 | * Because OPEN is always done by name in nfsv4, it is | |
2572 | * possible that we opened a different file by the same | |
2573 | * name. We can recognize this race condition, but we | |
2574 | * can't do anything about it besides returning an error. | |
2575 | * | |
2576 | * This will be fixed with VFS changes (lookup-intent). | |
2577 | */ | |
2578 | static int | |
2579 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2580 | struct iattr *sattr) | |
2581 | { | |
08e9eac4 | 2582 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2583 | struct rpc_cred *cred = NULL; |
d530838b | 2584 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2585 | int status; |
2586 | ||
8a1636c4 BH |
2587 | if (pnfs_ld_layoutret_on_setattr(inode)) |
2588 | pnfs_return_layout(inode); | |
2589 | ||
0e574af1 | 2590 | nfs_fattr_init(fattr); |
1da177e4 | 2591 | |
2669940d AA |
2592 | /* Deal with open(O_TRUNC) */ |
2593 | if (sattr->ia_valid & ATTR_OPEN) | |
2594 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME|ATTR_OPEN); | |
2595 | ||
2596 | /* Optimization: if the end result is no change, don't RPC */ | |
2597 | if ((sattr->ia_valid & ~(ATTR_FILE)) == 0) | |
2598 | return 0; | |
2599 | ||
d530838b | 2600 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2601 | if (sattr->ia_valid & ATTR_FILE) { |
2602 | struct nfs_open_context *ctx; | |
2603 | ||
2604 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2605 | if (ctx) { |
2606 | cred = ctx->cred; | |
2607 | state = ctx->state; | |
2608 | } | |
659bfcd6 | 2609 | } |
08e9eac4 | 2610 | |
659bfcd6 | 2611 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2612 | if (status == 0) |
2613 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2614 | return status; |
2615 | } | |
2616 | ||
0c2e53f1 TM |
2617 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
2618 | const struct qstr *name, struct nfs_fh *fhandle, | |
2619 | struct nfs_fattr *fattr) | |
2b3de441 | 2620 | { |
0c2e53f1 | 2621 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
2622 | int status; |
2623 | struct nfs4_lookup_arg args = { | |
2624 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 2625 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
2626 | .name = name, |
2627 | }; | |
2628 | struct nfs4_lookup_res res = { | |
2629 | .server = server, | |
2630 | .fattr = fattr, | |
2631 | .fh = fhandle, | |
2632 | }; | |
2633 | struct rpc_message msg = { | |
2634 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2635 | .rpc_argp = &args, | |
2636 | .rpc_resp = &res, | |
2637 | }; | |
2638 | ||
2639 | nfs_fattr_init(fattr); | |
2640 | ||
1da177e4 | 2641 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 2642 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2643 | dprintk("NFS reply lookup: %d\n", status); |
2644 | return status; | |
2645 | } | |
2646 | ||
72de53ec | 2647 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 2648 | { |
7ebb9315 | 2649 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 2650 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
2651 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
2652 | fattr->nlink = 2; | |
2653 | } | |
2654 | ||
72de53ec BS |
2655 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
2656 | struct qstr *name, struct nfs_fh *fhandle, | |
2657 | struct nfs_fattr *fattr) | |
1da177e4 LT |
2658 | { |
2659 | struct nfs4_exception exception = { }; | |
72de53ec | 2660 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
2661 | int err; |
2662 | do { | |
72de53ec BS |
2663 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr); |
2664 | switch (err) { | |
08ef7bd3 | 2665 | case -NFS4ERR_BADNAME: |
72de53ec BS |
2666 | err = -ENOENT; |
2667 | goto out; | |
0c2e53f1 | 2668 | case -NFS4ERR_MOVED: |
f05d147f | 2669 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
72de53ec | 2670 | goto out; |
0c2e53f1 | 2671 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
2672 | err = -EPERM; |
2673 | if (client != *clnt) | |
2674 | goto out; | |
2675 | ||
2676 | client = nfs4_create_sec_client(client, dir, name); | |
2677 | if (IS_ERR(client)) | |
2678 | return PTR_ERR(client); | |
2679 | ||
2680 | exception.retry = 1; | |
2681 | break; | |
2682 | default: | |
2683 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 2684 | } |
1da177e4 | 2685 | } while (exception.retry); |
72de53ec BS |
2686 | |
2687 | out: | |
2688 | if (err == 0) | |
2689 | *clnt = client; | |
2690 | else if (client != *clnt) | |
2691 | rpc_shutdown_client(client); | |
2692 | ||
1da177e4 LT |
2693 | return err; |
2694 | } | |
2695 | ||
80a16b21 | 2696 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, |
72de53ec BS |
2697 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2698 | { | |
2699 | int status; | |
2700 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
2701 | ||
2702 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2703 | if (client != NFS_CLIENT(dir)) { | |
2704 | rpc_shutdown_client(client); | |
2705 | nfs_fixup_secinfo_attributes(fattr); | |
2706 | } | |
2707 | return status; | |
2708 | } | |
2709 | ||
f05d147f BS |
2710 | struct rpc_clnt * |
2711 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, | |
2712 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2713 | { | |
2714 | int status; | |
2715 | struct rpc_clnt *client = rpc_clone_client(NFS_CLIENT(dir)); | |
2716 | ||
2717 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2718 | if (status < 0) { | |
2719 | rpc_shutdown_client(client); | |
2720 | return ERR_PTR(status); | |
2721 | } | |
2722 | return client; | |
2723 | } | |
2724 | ||
1da177e4 LT |
2725 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
2726 | { | |
76b32999 | 2727 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2728 | struct nfs4_accessargs args = { |
2729 | .fh = NFS_FH(inode), | |
a4980e78 | 2730 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
2731 | }; |
2732 | struct nfs4_accessres res = { | |
2733 | .server = server, | |
1da177e4 | 2734 | }; |
1da177e4 LT |
2735 | struct rpc_message msg = { |
2736 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2737 | .rpc_argp = &args, | |
2738 | .rpc_resp = &res, | |
2739 | .rpc_cred = entry->cred, | |
2740 | }; | |
2741 | int mode = entry->mask; | |
2742 | int status; | |
2743 | ||
2744 | /* | |
2745 | * Determine which access bits we want to ask for... | |
2746 | */ | |
2747 | if (mode & MAY_READ) | |
2748 | args.access |= NFS4_ACCESS_READ; | |
2749 | if (S_ISDIR(inode->i_mode)) { | |
2750 | if (mode & MAY_WRITE) | |
2751 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2752 | if (mode & MAY_EXEC) | |
2753 | args.access |= NFS4_ACCESS_LOOKUP; | |
2754 | } else { | |
2755 | if (mode & MAY_WRITE) | |
2756 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2757 | if (mode & MAY_EXEC) | |
2758 | args.access |= NFS4_ACCESS_EXECUTE; | |
2759 | } | |
c407d41a TM |
2760 | |
2761 | res.fattr = nfs_alloc_fattr(); | |
2762 | if (res.fattr == NULL) | |
2763 | return -ENOMEM; | |
2764 | ||
7c513058 | 2765 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 2766 | if (!status) { |
6168f62c | 2767 | nfs_access_set_mask(entry, res.access); |
c407d41a | 2768 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2769 | } |
c407d41a | 2770 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2771 | return status; |
2772 | } | |
2773 | ||
2774 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2775 | { | |
2776 | struct nfs4_exception exception = { }; | |
2777 | int err; | |
2778 | do { | |
2779 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2780 | _nfs4_proc_access(inode, entry), | |
2781 | &exception); | |
2782 | } while (exception.retry); | |
2783 | return err; | |
2784 | } | |
2785 | ||
2786 | /* | |
2787 | * TODO: For the time being, we don't try to get any attributes | |
2788 | * along with any of the zero-copy operations READ, READDIR, | |
2789 | * READLINK, WRITE. | |
2790 | * | |
2791 | * In the case of the first three, we want to put the GETATTR | |
2792 | * after the read-type operation -- this is because it is hard | |
2793 | * to predict the length of a GETATTR response in v4, and thus | |
2794 | * align the READ data correctly. This means that the GETATTR | |
2795 | * may end up partially falling into the page cache, and we should | |
2796 | * shift it into the 'tail' of the xdr_buf before processing. | |
2797 | * To do this efficiently, we need to know the total length | |
2798 | * of data received, which doesn't seem to be available outside | |
2799 | * of the RPC layer. | |
2800 | * | |
2801 | * In the case of WRITE, we also want to put the GETATTR after | |
2802 | * the operation -- in this case because we want to make sure | |
140150db | 2803 | * we get the post-operation mtime and size. |
1da177e4 LT |
2804 | * |
2805 | * Both of these changes to the XDR layer would in fact be quite | |
2806 | * minor, but I decided to leave them for a subsequent patch. | |
2807 | */ | |
2808 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2809 | unsigned int pgbase, unsigned int pglen) | |
2810 | { | |
2811 | struct nfs4_readlink args = { | |
2812 | .fh = NFS_FH(inode), | |
2813 | .pgbase = pgbase, | |
2814 | .pglen = pglen, | |
2815 | .pages = &page, | |
2816 | }; | |
f50c7000 | 2817 | struct nfs4_readlink_res res; |
1da177e4 LT |
2818 | struct rpc_message msg = { |
2819 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2820 | .rpc_argp = &args, | |
f50c7000 | 2821 | .rpc_resp = &res, |
1da177e4 LT |
2822 | }; |
2823 | ||
7c513058 | 2824 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2825 | } |
2826 | ||
2827 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2828 | unsigned int pgbase, unsigned int pglen) | |
2829 | { | |
2830 | struct nfs4_exception exception = { }; | |
2831 | int err; | |
2832 | do { | |
2833 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2834 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2835 | &exception); | |
2836 | } while (exception.retry); | |
2837 | return err; | |
2838 | } | |
2839 | ||
1da177e4 | 2840 | /* |
8867fe58 | 2841 | * This is just for mknod. open(O_CREAT) will always do ->open_context(). |
1da177e4 | 2842 | */ |
1da177e4 LT |
2843 | static int |
2844 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 2845 | int flags) |
1da177e4 | 2846 | { |
8867fe58 | 2847 | struct nfs_open_context *ctx; |
1da177e4 | 2848 | struct nfs4_state *state; |
1da177e4 LT |
2849 | int status = 0; |
2850 | ||
8867fe58 MS |
2851 | ctx = alloc_nfs_open_context(dentry, FMODE_READ); |
2852 | if (IS_ERR(ctx)) | |
2853 | return PTR_ERR(ctx); | |
2854 | ||
a8a5da99 | 2855 | sattr->ia_mode &= ~current_umask(); |
8626e4a4 TM |
2856 | state = nfs4_do_open(dir, dentry, ctx->mode, |
2857 | flags, sattr, ctx->cred, | |
2858 | &ctx->mdsthreshold); | |
d4d9cdcb | 2859 | d_drop(dentry); |
1da177e4 LT |
2860 | if (IS_ERR(state)) { |
2861 | status = PTR_ERR(state); | |
c0204fd2 | 2862 | goto out; |
1da177e4 | 2863 | } |
d4d9cdcb | 2864 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2865 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
8867fe58 | 2866 | ctx->state = state; |
1da177e4 | 2867 | out: |
8867fe58 | 2868 | put_nfs_open_context(ctx); |
1da177e4 LT |
2869 | return status; |
2870 | } | |
2871 | ||
2872 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2873 | { | |
16e42959 | 2874 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2875 | struct nfs_removeargs args = { |
1da177e4 | 2876 | .fh = NFS_FH(dir), |
26fe5750 | 2877 | .name = *name, |
16e42959 | 2878 | }; |
4fdc17b2 | 2879 | struct nfs_removeres res = { |
16e42959 | 2880 | .server = server, |
1da177e4 | 2881 | }; |
1da177e4 | 2882 | struct rpc_message msg = { |
4fdc17b2 TM |
2883 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
2884 | .rpc_argp = &args, | |
2885 | .rpc_resp = &res, | |
1da177e4 | 2886 | }; |
778d2817 | 2887 | int status; |
1da177e4 | 2888 | |
7c513058 | 2889 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 2890 | if (status == 0) |
16e42959 | 2891 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
2892 | return status; |
2893 | } | |
2894 | ||
2895 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2896 | { | |
2897 | struct nfs4_exception exception = { }; | |
2898 | int err; | |
2899 | do { | |
2900 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2901 | _nfs4_proc_remove(dir, name), | |
2902 | &exception); | |
2903 | } while (exception.retry); | |
2904 | return err; | |
2905 | } | |
2906 | ||
e4eff1a6 | 2907 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 2908 | { |
e4eff1a6 TM |
2909 | struct nfs_server *server = NFS_SERVER(dir); |
2910 | struct nfs_removeargs *args = msg->rpc_argp; | |
2911 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 2912 | |
e4eff1a6 | 2913 | res->server = server; |
1da177e4 | 2914 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
9d12b216 | 2915 | nfs41_init_sequence(&args->seq_args, &res->seq_res, 1); |
1da177e4 LT |
2916 | } |
2917 | ||
34e137cc BS |
2918 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
2919 | { | |
2920 | if (nfs4_setup_sequence(NFS_SERVER(data->dir), | |
2921 | &data->args.seq_args, | |
2922 | &data->res.seq_res, | |
2923 | task)) | |
2924 | return; | |
2925 | rpc_call_start(task); | |
1da177e4 LT |
2926 | } |
2927 | ||
e4eff1a6 | 2928 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 2929 | { |
e4eff1a6 TM |
2930 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
2931 | ||
14516c3a TM |
2932 | if (!nfs4_sequence_done(task, &res->seq_res)) |
2933 | return 0; | |
9e33bed5 | 2934 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
2935 | return 0; |
2936 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 2937 | return 1; |
1da177e4 LT |
2938 | } |
2939 | ||
d3d4152a JL |
2940 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
2941 | { | |
2942 | struct nfs_server *server = NFS_SERVER(dir); | |
2943 | struct nfs_renameargs *arg = msg->rpc_argp; | |
2944 | struct nfs_renameres *res = msg->rpc_resp; | |
2945 | ||
2946 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 2947 | res->server = server; |
9d12b216 | 2948 | nfs41_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
2949 | } |
2950 | ||
c6bfa1a1 BS |
2951 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
2952 | { | |
2953 | if (nfs4_setup_sequence(NFS_SERVER(data->old_dir), | |
2954 | &data->args.seq_args, | |
2955 | &data->res.seq_res, | |
2956 | task)) | |
2957 | return; | |
2958 | rpc_call_start(task); | |
d3d4152a JL |
2959 | } |
2960 | ||
2961 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
2962 | struct inode *new_dir) | |
2963 | { | |
2964 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
2965 | ||
2966 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
2967 | return 0; | |
2968 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
2969 | return 0; | |
2970 | ||
2971 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 2972 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
2973 | return 1; |
2974 | } | |
2975 | ||
1da177e4 LT |
2976 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
2977 | struct inode *new_dir, struct qstr *new_name) | |
2978 | { | |
6caf2c82 | 2979 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 2980 | struct nfs_renameargs arg = { |
1da177e4 LT |
2981 | .old_dir = NFS_FH(old_dir), |
2982 | .new_dir = NFS_FH(new_dir), | |
2983 | .old_name = old_name, | |
2984 | .new_name = new_name, | |
6caf2c82 | 2985 | }; |
e8582a8b | 2986 | struct nfs_renameres res = { |
6caf2c82 | 2987 | .server = server, |
1da177e4 | 2988 | }; |
1da177e4 LT |
2989 | struct rpc_message msg = { |
2990 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
2991 | .rpc_argp = &arg, | |
2992 | .rpc_resp = &res, | |
2993 | }; | |
011fff72 | 2994 | int status = -ENOMEM; |
1da177e4 | 2995 | |
7c513058 | 2996 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
2997 | if (!status) { |
2998 | update_changeattr(old_dir, &res.old_cinfo); | |
2999 | update_changeattr(new_dir, &res.new_cinfo); | |
3000 | } | |
3001 | return status; | |
3002 | } | |
3003 | ||
3004 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
3005 | struct inode *new_dir, struct qstr *new_name) | |
3006 | { | |
3007 | struct nfs4_exception exception = { }; | |
3008 | int err; | |
3009 | do { | |
3010 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
3011 | _nfs4_proc_rename(old_dir, old_name, | |
3012 | new_dir, new_name), | |
3013 | &exception); | |
3014 | } while (exception.retry); | |
3015 | return err; | |
3016 | } | |
3017 | ||
3018 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3019 | { | |
91ba2eee | 3020 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3021 | struct nfs4_link_arg arg = { |
3022 | .fh = NFS_FH(inode), | |
3023 | .dir_fh = NFS_FH(dir), | |
3024 | .name = name, | |
91ba2eee TM |
3025 | .bitmask = server->attr_bitmask, |
3026 | }; | |
91ba2eee TM |
3027 | struct nfs4_link_res res = { |
3028 | .server = server, | |
1da177e4 | 3029 | }; |
1da177e4 LT |
3030 | struct rpc_message msg = { |
3031 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
3032 | .rpc_argp = &arg, | |
91ba2eee | 3033 | .rpc_resp = &res, |
1da177e4 | 3034 | }; |
136f2627 TM |
3035 | int status = -ENOMEM; |
3036 | ||
3037 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 3038 | if (res.fattr == NULL) |
136f2627 | 3039 | goto out; |
1da177e4 | 3040 | |
7c513058 | 3041 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
3042 | if (!status) { |
3043 | update_changeattr(dir, &res.cinfo); | |
73a3d07c | 3044 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 3045 | } |
136f2627 | 3046 | out: |
136f2627 | 3047 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3048 | return status; |
3049 | } | |
3050 | ||
3051 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3052 | { | |
3053 | struct nfs4_exception exception = { }; | |
3054 | int err; | |
3055 | do { | |
3056 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3057 | _nfs4_proc_link(inode, dir, name), | |
3058 | &exception); | |
3059 | } while (exception.retry); | |
3060 | return err; | |
3061 | } | |
3062 | ||
57dc9a57 TM |
3063 | struct nfs4_createdata { |
3064 | struct rpc_message msg; | |
3065 | struct nfs4_create_arg arg; | |
3066 | struct nfs4_create_res res; | |
3067 | struct nfs_fh fh; | |
3068 | struct nfs_fattr fattr; | |
57dc9a57 TM |
3069 | }; |
3070 | ||
3071 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
3072 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
3073 | { | |
3074 | struct nfs4_createdata *data; | |
3075 | ||
3076 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3077 | if (data != NULL) { | |
3078 | struct nfs_server *server = NFS_SERVER(dir); | |
3079 | ||
3080 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
3081 | data->msg.rpc_argp = &data->arg; | |
3082 | data->msg.rpc_resp = &data->res; | |
3083 | data->arg.dir_fh = NFS_FH(dir); | |
3084 | data->arg.server = server; | |
3085 | data->arg.name = name; | |
3086 | data->arg.attrs = sattr; | |
3087 | data->arg.ftype = ftype; | |
3088 | data->arg.bitmask = server->attr_bitmask; | |
3089 | data->res.server = server; | |
3090 | data->res.fh = &data->fh; | |
3091 | data->res.fattr = &data->fattr; | |
57dc9a57 | 3092 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
3093 | } |
3094 | return data; | |
3095 | } | |
3096 | ||
3097 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3098 | { | |
7c513058 | 3099 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3100 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3101 | if (status == 0) { |
3102 | update_changeattr(dir, &data->res.dir_cinfo); | |
57dc9a57 TM |
3103 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); |
3104 | } | |
3105 | return status; | |
3106 | } | |
3107 | ||
3108 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3109 | { | |
3110 | kfree(data); | |
3111 | } | |
3112 | ||
4f390c15 | 3113 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3114 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 3115 | { |
57dc9a57 TM |
3116 | struct nfs4_createdata *data; |
3117 | int status = -ENAMETOOLONG; | |
1da177e4 | 3118 | |
94a6d753 | 3119 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 3120 | goto out; |
4f390c15 | 3121 | |
57dc9a57 TM |
3122 | status = -ENOMEM; |
3123 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
3124 | if (data == NULL) | |
3125 | goto out; | |
3126 | ||
3127 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
3128 | data->arg.u.symlink.pages = &page; | |
3129 | data->arg.u.symlink.len = len; | |
1da177e4 | 3130 | |
57dc9a57 TM |
3131 | status = nfs4_do_create(dir, dentry, data); |
3132 | ||
3133 | nfs4_free_createdata(data); | |
3134 | out: | |
1da177e4 LT |
3135 | return status; |
3136 | } | |
3137 | ||
4f390c15 | 3138 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3139 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
3140 | { |
3141 | struct nfs4_exception exception = { }; | |
3142 | int err; | |
3143 | do { | |
3144 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
3145 | _nfs4_proc_symlink(dir, dentry, page, |
3146 | len, sattr), | |
1da177e4 LT |
3147 | &exception); |
3148 | } while (exception.retry); | |
3149 | return err; | |
3150 | } | |
3151 | ||
3152 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3153 | struct iattr *sattr) | |
3154 | { | |
57dc9a57 TM |
3155 | struct nfs4_createdata *data; |
3156 | int status = -ENOMEM; | |
1da177e4 | 3157 | |
57dc9a57 TM |
3158 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3159 | if (data == NULL) | |
3160 | goto out; | |
3161 | ||
3162 | status = nfs4_do_create(dir, dentry, data); | |
3163 | ||
3164 | nfs4_free_createdata(data); | |
3165 | out: | |
1da177e4 LT |
3166 | return status; |
3167 | } | |
3168 | ||
3169 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3170 | struct iattr *sattr) | |
3171 | { | |
3172 | struct nfs4_exception exception = { }; | |
3173 | int err; | |
a8a5da99 AK |
3174 | |
3175 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3176 | do { |
3177 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3178 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
3179 | &exception); | |
3180 | } while (exception.retry); | |
3181 | return err; | |
3182 | } | |
3183 | ||
3184 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3185 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3186 | { |
3187 | struct inode *dir = dentry->d_inode; | |
3188 | struct nfs4_readdir_arg args = { | |
3189 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3190 | .pages = pages, |
1da177e4 LT |
3191 | .pgbase = 0, |
3192 | .count = count, | |
96d25e53 | 3193 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3194 | .plus = plus, |
1da177e4 LT |
3195 | }; |
3196 | struct nfs4_readdir_res res; | |
3197 | struct rpc_message msg = { | |
3198 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3199 | .rpc_argp = &args, | |
3200 | .rpc_resp = &res, | |
3201 | .rpc_cred = cred, | |
3202 | }; | |
3203 | int status; | |
3204 | ||
3110ff80 | 3205 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
3206 | dentry->d_parent->d_name.name, |
3207 | dentry->d_name.name, | |
3208 | (unsigned long long)cookie); | |
c3f52af3 | 3209 | nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args); |
1da177e4 | 3210 | res.pgbase = args.pgbase; |
7c513058 | 3211 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3212 | if (status >= 0) { |
c3f52af3 | 3213 | memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3214 | status += args.pgbase; |
3215 | } | |
c4812998 TM |
3216 | |
3217 | nfs_invalidate_atime(dir); | |
3218 | ||
3110ff80 | 3219 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3220 | return status; |
3221 | } | |
3222 | ||
3223 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3224 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3225 | { |
3226 | struct nfs4_exception exception = { }; | |
3227 | int err; | |
3228 | do { | |
3229 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
3230 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 3231 | pages, count, plus), |
1da177e4 LT |
3232 | &exception); |
3233 | } while (exception.retry); | |
3234 | return err; | |
3235 | } | |
3236 | ||
3237 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3238 | struct iattr *sattr, dev_t rdev) | |
3239 | { | |
57dc9a57 TM |
3240 | struct nfs4_createdata *data; |
3241 | int mode = sattr->ia_mode; | |
3242 | int status = -ENOMEM; | |
1da177e4 | 3243 | |
57dc9a57 TM |
3244 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); |
3245 | if (data == NULL) | |
3246 | goto out; | |
3247 | ||
1da177e4 | 3248 | if (S_ISFIFO(mode)) |
57dc9a57 | 3249 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3250 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3251 | data->arg.ftype = NF4BLK; |
3252 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3253 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3254 | } |
3255 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3256 | data->arg.ftype = NF4CHR; |
3257 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3258 | data->arg.u.device.specdata2 = MINOR(rdev); | |
4ea8fed5 TM |
3259 | } else if (!S_ISSOCK(mode)) { |
3260 | status = -EINVAL; | |
3261 | goto out_free; | |
1da177e4 | 3262 | } |
1da177e4 | 3263 | |
57dc9a57 | 3264 | status = nfs4_do_create(dir, dentry, data); |
4ea8fed5 | 3265 | out_free: |
57dc9a57 TM |
3266 | nfs4_free_createdata(data); |
3267 | out: | |
1da177e4 LT |
3268 | return status; |
3269 | } | |
3270 | ||
3271 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3272 | struct iattr *sattr, dev_t rdev) | |
3273 | { | |
3274 | struct nfs4_exception exception = { }; | |
3275 | int err; | |
a8a5da99 AK |
3276 | |
3277 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3278 | do { |
3279 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3280 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
3281 | &exception); | |
3282 | } while (exception.retry); | |
3283 | return err; | |
3284 | } | |
3285 | ||
3286 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3287 | struct nfs_fsstat *fsstat) | |
3288 | { | |
3289 | struct nfs4_statfs_arg args = { | |
3290 | .fh = fhandle, | |
3291 | .bitmask = server->attr_bitmask, | |
3292 | }; | |
24ad148a BH |
3293 | struct nfs4_statfs_res res = { |
3294 | .fsstat = fsstat, | |
3295 | }; | |
1da177e4 LT |
3296 | struct rpc_message msg = { |
3297 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3298 | .rpc_argp = &args, | |
24ad148a | 3299 | .rpc_resp = &res, |
1da177e4 LT |
3300 | }; |
3301 | ||
0e574af1 | 3302 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3303 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3304 | } |
3305 | ||
3306 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3307 | { | |
3308 | struct nfs4_exception exception = { }; | |
3309 | int err; | |
3310 | do { | |
3311 | err = nfs4_handle_exception(server, | |
3312 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3313 | &exception); | |
3314 | } while (exception.retry); | |
3315 | return err; | |
3316 | } | |
3317 | ||
3318 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3319 | struct nfs_fsinfo *fsinfo) | |
3320 | { | |
3321 | struct nfs4_fsinfo_arg args = { | |
3322 | .fh = fhandle, | |
3323 | .bitmask = server->attr_bitmask, | |
3324 | }; | |
3dda5e43 BH |
3325 | struct nfs4_fsinfo_res res = { |
3326 | .fsinfo = fsinfo, | |
3327 | }; | |
1da177e4 LT |
3328 | struct rpc_message msg = { |
3329 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3330 | .rpc_argp = &args, | |
3dda5e43 | 3331 | .rpc_resp = &res, |
1da177e4 LT |
3332 | }; |
3333 | ||
7c513058 | 3334 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3335 | } |
3336 | ||
3337 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3338 | { | |
3339 | struct nfs4_exception exception = { }; | |
3340 | int err; | |
3341 | ||
3342 | do { | |
3343 | err = nfs4_handle_exception(server, | |
3344 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
3345 | &exception); | |
3346 | } while (exception.retry); | |
3347 | return err; | |
3348 | } | |
3349 | ||
3350 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3351 | { | |
e38eb650 BS |
3352 | int error; |
3353 | ||
0e574af1 | 3354 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 | 3355 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
dc182549 PT |
3356 | if (error == 0) { |
3357 | /* block layout checks this! */ | |
3358 | server->pnfs_blksize = fsinfo->blksize; | |
e38eb650 | 3359 | set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype); |
dc182549 | 3360 | } |
e38eb650 BS |
3361 | |
3362 | return error; | |
1da177e4 LT |
3363 | } |
3364 | ||
3365 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3366 | struct nfs_pathconf *pathconf) | |
3367 | { | |
3368 | struct nfs4_pathconf_arg args = { | |
3369 | .fh = fhandle, | |
3370 | .bitmask = server->attr_bitmask, | |
3371 | }; | |
d45b2989 BH |
3372 | struct nfs4_pathconf_res res = { |
3373 | .pathconf = pathconf, | |
3374 | }; | |
1da177e4 LT |
3375 | struct rpc_message msg = { |
3376 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3377 | .rpc_argp = &args, | |
d45b2989 | 3378 | .rpc_resp = &res, |
1da177e4 LT |
3379 | }; |
3380 | ||
3381 | /* None of the pathconf attributes are mandatory to implement */ | |
3382 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3383 | memset(pathconf, 0, sizeof(*pathconf)); | |
3384 | return 0; | |
3385 | } | |
3386 | ||
0e574af1 | 3387 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3388 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3389 | } |
3390 | ||
3391 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3392 | struct nfs_pathconf *pathconf) | |
3393 | { | |
3394 | struct nfs4_exception exception = { }; | |
3395 | int err; | |
3396 | ||
3397 | do { | |
3398 | err = nfs4_handle_exception(server, | |
3399 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3400 | &exception); | |
3401 | } while (exception.retry); | |
3402 | return err; | |
3403 | } | |
3404 | ||
d20581aa BH |
3405 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3406 | { | |
cd841605 | 3407 | nfs_invalidate_atime(data->header->inode); |
d20581aa BH |
3408 | } |
3409 | ||
cbdabc7f | 3410 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3411 | { |
cd841605 | 3412 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
1da177e4 | 3413 | |
9e33bed5 | 3414 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3415 | rpc_restart_call_prepare(task); |
ec06c096 | 3416 | return -EAGAIN; |
1da177e4 | 3417 | } |
8850df99 | 3418 | |
d20581aa | 3419 | __nfs4_read_done_cb(data); |
1da177e4 | 3420 | if (task->tk_status > 0) |
ec06c096 TM |
3421 | renew_lease(server, data->timestamp); |
3422 | return 0; | |
1da177e4 LT |
3423 | } |
3424 | ||
cbdabc7f AA |
3425 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3426 | { | |
3427 | ||
3428 | dprintk("--> %s\n", __func__); | |
3429 | ||
3430 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3431 | return -EAGAIN; | |
3432 | ||
d20581aa BH |
3433 | return data->read_done_cb ? data->read_done_cb(task, data) : |
3434 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
3435 | } |
3436 | ||
bdc7f021 | 3437 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3438 | { |
1da177e4 | 3439 | data->timestamp = jiffies; |
cbdabc7f | 3440 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3441 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
9d12b216 | 3442 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
1da177e4 LT |
3443 | } |
3444 | ||
ea7c3303 BS |
3445 | static void nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) |
3446 | { | |
cd841605 | 3447 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
ea7c3303 BS |
3448 | &data->args.seq_args, |
3449 | &data->res.seq_res, | |
3450 | task)) | |
3451 | return; | |
3452 | rpc_call_start(task); | |
1da177e4 LT |
3453 | } |
3454 | ||
b029bc9b | 3455 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3456 | { |
cd841605 | 3457 | struct inode *inode = data->header->inode; |
1da177e4 | 3458 | |
9e33bed5 | 3459 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3460 | rpc_restart_call_prepare(task); |
788e7a89 | 3461 | return -EAGAIN; |
1da177e4 | 3462 | } |
4f9838c7 | 3463 | if (task->tk_status >= 0) { |
1da177e4 | 3464 | renew_lease(NFS_SERVER(inode), data->timestamp); |
5a37f851 | 3465 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); |
4f9838c7 | 3466 | } |
788e7a89 | 3467 | return 0; |
1da177e4 LT |
3468 | } |
3469 | ||
b029bc9b FI |
3470 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3471 | { | |
3472 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3473 | return -EAGAIN; | |
d20581aa BH |
3474 | return data->write_done_cb ? data->write_done_cb(task, data) : |
3475 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
3476 | } |
3477 | ||
5a37f851 TM |
3478 | static |
3479 | bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data *data) | |
a69aef14 | 3480 | { |
5a37f851 TM |
3481 | const struct nfs_pgio_header *hdr = data->header; |
3482 | ||
3483 | /* Don't request attributes for pNFS or O_DIRECT writes */ | |
3484 | if (data->ds_clp != NULL || hdr->dreq != NULL) | |
3485 | return false; | |
3486 | /* Otherwise, request attributes if and only if we don't hold | |
3487 | * a delegation | |
3488 | */ | |
011e2a7f | 3489 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 3490 | } |
a69aef14 | 3491 | |
bdc7f021 | 3492 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3493 | { |
cd841605 | 3494 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
bdc7f021 | 3495 | |
5a37f851 | 3496 | if (!nfs4_write_need_cache_consistency_data(data)) { |
7ffd1064 FI |
3497 | data->args.bitmask = NULL; |
3498 | data->res.fattr = NULL; | |
3499 | } else | |
3500 | data->args.bitmask = server->cache_consistency_bitmask; | |
5a37f851 | 3501 | |
b029bc9b FI |
3502 | if (!data->write_done_cb) |
3503 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3504 | data->res.server = server; |
1da177e4 LT |
3505 | data->timestamp = jiffies; |
3506 | ||
bdc7f021 | 3507 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
9d12b216 | 3508 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3509 | } |
3510 | ||
c6cb80d0 BS |
3511 | static void nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) |
3512 | { | |
cd841605 | 3513 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
c6cb80d0 BS |
3514 | &data->args.seq_args, |
3515 | &data->res.seq_res, | |
3516 | task)) | |
3517 | return; | |
3518 | rpc_call_start(task); | |
1da177e4 LT |
3519 | } |
3520 | ||
0b7c0153 | 3521 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 BS |
3522 | { |
3523 | if (nfs4_setup_sequence(NFS_SERVER(data->inode), | |
3524 | &data->args.seq_args, | |
3525 | &data->res.seq_res, | |
3526 | task)) | |
3527 | return; | |
3528 | rpc_call_start(task); | |
1da177e4 LT |
3529 | } |
3530 | ||
0b7c0153 | 3531 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 3532 | { |
1da177e4 | 3533 | struct inode *inode = data->inode; |
14516c3a | 3534 | |
9e33bed5 | 3535 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
d00c5d43 | 3536 | rpc_restart_call_prepare(task); |
788e7a89 | 3537 | return -EAGAIN; |
1da177e4 | 3538 | } |
788e7a89 | 3539 | return 0; |
1da177e4 LT |
3540 | } |
3541 | ||
0b7c0153 | 3542 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
3543 | { |
3544 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3545 | return -EAGAIN; | |
0b7c0153 | 3546 | return data->commit_done_cb(task, data); |
5f452431 FI |
3547 | } |
3548 | ||
0b7c0153 | 3549 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 3550 | { |
788e7a89 | 3551 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 3552 | |
0b7c0153 FI |
3553 | if (data->commit_done_cb == NULL) |
3554 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 3555 | data->res.server = server; |
bdc7f021 | 3556 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
9d12b216 | 3557 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3558 | } |
3559 | ||
9bc4e3ca CL |
3560 | struct nfs4_renewdata { |
3561 | struct nfs_client *client; | |
3562 | unsigned long timestamp; | |
3563 | }; | |
3564 | ||
1da177e4 LT |
3565 | /* |
3566 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3567 | * standalone procedure for queueing an asynchronous RENEW. | |
3568 | */ | |
9bc4e3ca | 3569 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3570 | { |
9bc4e3ca CL |
3571 | struct nfs4_renewdata *data = calldata; |
3572 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3573 | |
0851de06 AB |
3574 | if (atomic_read(&clp->cl_count) > 1) |
3575 | nfs4_schedule_state_renewal(clp); | |
3576 | nfs_put_client(clp); | |
9bc4e3ca | 3577 | kfree(data); |
dc96aef9 AB |
3578 | } |
3579 | ||
9bc4e3ca | 3580 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3581 | { |
9bc4e3ca CL |
3582 | struct nfs4_renewdata *data = calldata; |
3583 | struct nfs_client *clp = data->client; | |
3584 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3585 | |
3586 | if (task->tk_status < 0) { | |
95baa25c | 3587 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
3588 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
3589 | return; | |
3590 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 3591 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
3592 | return; |
3593 | } | |
3594 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 3595 | } |
452e9352 | 3596 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3597 | } |
3598 | ||
963d8fe5 TM |
3599 | static const struct rpc_call_ops nfs4_renew_ops = { |
3600 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3601 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3602 | }; |
3603 | ||
2f60ea6b | 3604 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
3605 | { |
3606 | struct rpc_message msg = { | |
3607 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3608 | .rpc_argp = clp, | |
b4454fe1 | 3609 | .rpc_cred = cred, |
1da177e4 | 3610 | }; |
9bc4e3ca | 3611 | struct nfs4_renewdata *data; |
1da177e4 | 3612 | |
2f60ea6b TM |
3613 | if (renew_flags == 0) |
3614 | return 0; | |
0851de06 AB |
3615 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3616 | return -EIO; | |
b569ad34 | 3617 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
3618 | if (data == NULL) |
3619 | return -ENOMEM; | |
3620 | data->client = clp; | |
3621 | data->timestamp = jiffies; | |
1da177e4 | 3622 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, |
9bc4e3ca | 3623 | &nfs4_renew_ops, data); |
1da177e4 LT |
3624 | } |
3625 | ||
8534d4ec | 3626 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3627 | { |
3628 | struct rpc_message msg = { | |
3629 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3630 | .rpc_argp = clp, | |
b4454fe1 | 3631 | .rpc_cred = cred, |
1da177e4 LT |
3632 | }; |
3633 | unsigned long now = jiffies; | |
3634 | int status; | |
3635 | ||
3636 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3637 | if (status < 0) | |
3638 | return status; | |
452e9352 | 3639 | do_renew_lease(clp, now); |
1da177e4 LT |
3640 | return 0; |
3641 | } | |
3642 | ||
aa1870af BF |
3643 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3644 | { | |
3645 | return (server->caps & NFS_CAP_ACLS) | |
3646 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3647 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3648 | } | |
3649 | ||
21f498c2 TM |
3650 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that |
3651 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on | |
aa1870af BF |
3652 | * the stack. |
3653 | */ | |
21f498c2 | 3654 | #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) |
aa1870af | 3655 | |
e9e3d724 NH |
3656 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
3657 | struct page **pages, unsigned int *pgbase) | |
3658 | { | |
3659 | struct page *newpage, **spages; | |
3660 | int rc = 0; | |
3661 | size_t len; | |
3662 | spages = pages; | |
3663 | ||
3664 | do { | |
21f498c2 | 3665 | len = min_t(size_t, PAGE_SIZE, buflen); |
e9e3d724 NH |
3666 | newpage = alloc_page(GFP_KERNEL); |
3667 | ||
3668 | if (newpage == NULL) | |
3669 | goto unwind; | |
3670 | memcpy(page_address(newpage), buf, len); | |
3671 | buf += len; | |
3672 | buflen -= len; | |
3673 | *pages++ = newpage; | |
3674 | rc++; | |
3675 | } while (buflen != 0); | |
3676 | ||
3677 | return rc; | |
3678 | ||
3679 | unwind: | |
3680 | for(; rc > 0; rc--) | |
3681 | __free_page(spages[rc-1]); | |
3682 | return -ENOMEM; | |
3683 | } | |
3684 | ||
e50a1c2e BF |
3685 | struct nfs4_cached_acl { |
3686 | int cached; | |
3687 | size_t len; | |
3e9d4154 | 3688 | char data[0]; |
e50a1c2e BF |
3689 | }; |
3690 | ||
3691 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3692 | { | |
3693 | struct nfs_inode *nfsi = NFS_I(inode); | |
3694 | ||
3695 | spin_lock(&inode->i_lock); | |
3696 | kfree(nfsi->nfs4_acl); | |
3697 | nfsi->nfs4_acl = acl; | |
3698 | spin_unlock(&inode->i_lock); | |
3699 | } | |
3700 | ||
3701 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3702 | { | |
3703 | nfs4_set_cached_acl(inode, NULL); | |
3704 | } | |
3705 | ||
3706 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3707 | { | |
3708 | struct nfs_inode *nfsi = NFS_I(inode); | |
3709 | struct nfs4_cached_acl *acl; | |
3710 | int ret = -ENOENT; | |
3711 | ||
3712 | spin_lock(&inode->i_lock); | |
3713 | acl = nfsi->nfs4_acl; | |
3714 | if (acl == NULL) | |
3715 | goto out; | |
3716 | if (buf == NULL) /* user is just asking for length */ | |
3717 | goto out_len; | |
3718 | if (acl->cached == 0) | |
3719 | goto out; | |
3720 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3721 | if (acl->len > buflen) | |
3722 | goto out; | |
3723 | memcpy(buf, acl->data, acl->len); | |
3724 | out_len: | |
3725 | ret = acl->len; | |
3726 | out: | |
3727 | spin_unlock(&inode->i_lock); | |
3728 | return ret; | |
3729 | } | |
3730 | ||
5794d21e | 3731 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
3732 | { |
3733 | struct nfs4_cached_acl *acl; | |
b291f1b1 | 3734 | size_t buflen = sizeof(*acl) + acl_len; |
e50a1c2e | 3735 | |
1f1ea6c2 | 3736 | if (buflen <= PAGE_SIZE) { |
b291f1b1 | 3737 | acl = kmalloc(buflen, GFP_KERNEL); |
e50a1c2e BF |
3738 | if (acl == NULL) |
3739 | goto out; | |
3740 | acl->cached = 1; | |
5794d21e | 3741 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
3742 | } else { |
3743 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3744 | if (acl == NULL) | |
3745 | goto out; | |
3746 | acl->cached = 0; | |
3747 | } | |
3748 | acl->len = acl_len; | |
3749 | out: | |
3750 | nfs4_set_cached_acl(inode, acl); | |
3751 | } | |
3752 | ||
bf118a34 AA |
3753 | /* |
3754 | * The getxattr API returns the required buffer length when called with a | |
3755 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
3756 | * the required buf. On a NULL buf, we send a page of data to the server | |
3757 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
3758 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
3759 | * the cache. If not so, we throw away the page, and cache the required | |
3760 | * length. The next getxattr call will then produce another round trip to | |
3761 | * the server, this time with the input buf of the required size. | |
3762 | */ | |
16b4289c | 3763 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3764 | { |
bf118a34 | 3765 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
3766 | struct nfs_getaclargs args = { |
3767 | .fh = NFS_FH(inode), | |
3768 | .acl_pages = pages, | |
3769 | .acl_len = buflen, | |
3770 | }; | |
663c79b3 BH |
3771 | struct nfs_getaclres res = { |
3772 | .acl_len = buflen, | |
3773 | }; | |
aa1870af BF |
3774 | struct rpc_message msg = { |
3775 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3776 | .rpc_argp = &args, | |
663c79b3 | 3777 | .rpc_resp = &res, |
aa1870af | 3778 | }; |
21f498c2 TM |
3779 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
3780 | int ret = -ENOMEM, i; | |
aa1870af | 3781 | |
bf118a34 AA |
3782 | /* As long as we're doing a round trip to the server anyway, |
3783 | * let's be prepared for a page of acl data. */ | |
3784 | if (npages == 0) | |
3785 | npages = 1; | |
21f498c2 TM |
3786 | if (npages > ARRAY_SIZE(pages)) |
3787 | return -ERANGE; | |
5a006899 | 3788 | |
bf118a34 AA |
3789 | for (i = 0; i < npages; i++) { |
3790 | pages[i] = alloc_page(GFP_KERNEL); | |
3791 | if (!pages[i]) | |
3792 | goto out_free; | |
e50a1c2e | 3793 | } |
5a006899 SP |
3794 | |
3795 | /* for decoding across pages */ | |
3796 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
3797 | if (!res.acl_scratch) | |
3798 | goto out_free; | |
3799 | ||
bf118a34 AA |
3800 | args.acl_len = npages * PAGE_SIZE; |
3801 | args.acl_pgbase = 0; | |
5a006899 | 3802 | |
de040bec | 3803 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
3804 | __func__, buf, buflen, npages, args.acl_len); |
3805 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
3806 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
3807 | if (ret) |
3808 | goto out_free; | |
bf118a34 | 3809 | |
1f1ea6c2 TM |
3810 | /* Handle the case where the passed-in buffer is too short */ |
3811 | if (res.acl_flags & NFS4_ACL_TRUNC) { | |
3812 | /* Did the user only issue a request for the acl length? */ | |
3813 | if (buf == NULL) | |
3814 | goto out_ok; | |
e50a1c2e | 3815 | ret = -ERANGE; |
1f1ea6c2 | 3816 | goto out_free; |
e50a1c2e | 3817 | } |
1f1ea6c2 TM |
3818 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len); |
3819 | if (buf) | |
3820 | _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len); | |
3821 | out_ok: | |
3822 | ret = res.acl_len; | |
e50a1c2e | 3823 | out_free: |
bf118a34 AA |
3824 | for (i = 0; i < npages; i++) |
3825 | if (pages[i]) | |
3826 | __free_page(pages[i]); | |
331818f1 TM |
3827 | if (res.acl_scratch) |
3828 | __free_page(res.acl_scratch); | |
aa1870af BF |
3829 | return ret; |
3830 | } | |
3831 | ||
16b4289c TM |
3832 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
3833 | { | |
3834 | struct nfs4_exception exception = { }; | |
3835 | ssize_t ret; | |
3836 | do { | |
3837 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
3838 | if (ret >= 0) | |
3839 | break; | |
3840 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
3841 | } while (exception.retry); | |
3842 | return ret; | |
3843 | } | |
3844 | ||
e50a1c2e BF |
3845 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
3846 | { | |
3847 | struct nfs_server *server = NFS_SERVER(inode); | |
3848 | int ret; | |
3849 | ||
3850 | if (!nfs4_server_supports_acls(server)) | |
3851 | return -EOPNOTSUPP; | |
3852 | ret = nfs_revalidate_inode(server, inode); | |
3853 | if (ret < 0) | |
3854 | return ret; | |
08a22b39 AK |
3855 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
3856 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
3857 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
3858 | if (ret != -ENOENT) | |
bf118a34 AA |
3859 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
3860 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
3861 | return ret; |
3862 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
3863 | } | |
3864 | ||
16b4289c | 3865 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
3866 | { |
3867 | struct nfs_server *server = NFS_SERVER(inode); | |
3868 | struct page *pages[NFS4ACL_MAXPAGES]; | |
3869 | struct nfs_setaclargs arg = { | |
3870 | .fh = NFS_FH(inode), | |
3871 | .acl_pages = pages, | |
3872 | .acl_len = buflen, | |
3873 | }; | |
73c403a9 | 3874 | struct nfs_setaclres res; |
4b580ee3 BF |
3875 | struct rpc_message msg = { |
3876 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
3877 | .rpc_argp = &arg, | |
73c403a9 | 3878 | .rpc_resp = &res, |
4b580ee3 | 3879 | }; |
21f498c2 | 3880 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
e9e3d724 | 3881 | int ret, i; |
4b580ee3 BF |
3882 | |
3883 | if (!nfs4_server_supports_acls(server)) | |
3884 | return -EOPNOTSUPP; | |
21f498c2 TM |
3885 | if (npages > ARRAY_SIZE(pages)) |
3886 | return -ERANGE; | |
e9e3d724 NH |
3887 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
3888 | if (i < 0) | |
3889 | return i; | |
57ec14c5 | 3890 | nfs4_inode_return_delegation(inode); |
7c513058 | 3891 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
3892 | |
3893 | /* | |
3894 | * Free each page after tx, so the only ref left is | |
3895 | * held by the network stack | |
3896 | */ | |
3897 | for (; i > 0; i--) | |
3898 | put_page(pages[i-1]); | |
3899 | ||
08a22b39 AK |
3900 | /* |
3901 | * Acl update can result in inode attribute update. | |
3902 | * so mark the attribute cache invalid. | |
3903 | */ | |
3904 | spin_lock(&inode->i_lock); | |
3905 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
3906 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
3907 | nfs_access_zap_cache(inode); |
3908 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
3909 | return ret; |
3910 | } | |
3911 | ||
16b4289c TM |
3912 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
3913 | { | |
3914 | struct nfs4_exception exception = { }; | |
3915 | int err; | |
3916 | do { | |
3917 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3918 | __nfs4_proc_set_acl(inode, buf, buflen), | |
3919 | &exception); | |
3920 | } while (exception.retry); | |
3921 | return err; | |
3922 | } | |
3923 | ||
1da177e4 | 3924 | static int |
aa5190d0 | 3925 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 3926 | { |
aa5190d0 TM |
3927 | struct nfs_client *clp = server->nfs_client; |
3928 | ||
3929 | if (task->tk_status >= 0) | |
1da177e4 LT |
3930 | return 0; |
3931 | switch(task->tk_status) { | |
a1d0b5ee | 3932 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
3933 | case -NFS4ERR_ADMIN_REVOKED: |
3934 | case -NFS4ERR_BAD_STATEID: | |
14977489 TM |
3935 | if (state == NULL) |
3936 | break; | |
3937 | nfs_remove_bad_delegation(state->inode); | |
9e33bed5 TM |
3938 | case -NFS4ERR_OPENMODE: |
3939 | if (state == NULL) | |
3940 | break; | |
0400a6b0 TM |
3941 | nfs4_schedule_stateid_recovery(server, state); |
3942 | goto wait_on_recovery; | |
0ced63d1 TM |
3943 | case -NFS4ERR_EXPIRED: |
3944 | if (state != NULL) | |
3945 | nfs4_schedule_stateid_recovery(server, state); | |
1da177e4 | 3946 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 3947 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
3948 | nfs4_schedule_lease_recovery(clp); |
3949 | goto wait_on_recovery; | |
4745e315 AA |
3950 | #if defined(CONFIG_NFS_V4_1) |
3951 | case -NFS4ERR_BADSESSION: | |
3952 | case -NFS4ERR_BADSLOT: | |
3953 | case -NFS4ERR_BAD_HIGH_SLOT: | |
3954 | case -NFS4ERR_DEADSESSION: | |
3955 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
3956 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
3957 | case -NFS4ERR_SEQ_MISORDERED: | |
3958 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
3959 | task->tk_status); | |
9f594791 | 3960 | nfs4_schedule_session_recovery(clp->cl_session, task->tk_status); |
4745e315 AA |
3961 | task->tk_status = 0; |
3962 | return -EAGAIN; | |
3963 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 3964 | case -NFS4ERR_DELAY: |
aa5190d0 | 3965 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 3966 | case -NFS4ERR_GRACE: |
2c643488 | 3967 | case -EKEYEXPIRED: |
1da177e4 LT |
3968 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
3969 | task->tk_status = 0; | |
3970 | return -EAGAIN; | |
a8a4ae3a | 3971 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
3972 | case -NFS4ERR_OLD_STATEID: |
3973 | task->tk_status = 0; | |
3974 | return -EAGAIN; | |
3975 | } | |
3976 | task->tk_status = nfs4_map_errors(task->tk_status); | |
3977 | return 0; | |
0400a6b0 | 3978 | wait_on_recovery: |
a2c0b9e2 | 3979 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
3980 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
3981 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
3982 | task->tk_status = 0; | |
3983 | return -EAGAIN; | |
1da177e4 LT |
3984 | } |
3985 | ||
f092075d CL |
3986 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
3987 | nfs4_verifier *bootverf) | |
cd93710e CL |
3988 | { |
3989 | __be32 verf[2]; | |
3990 | ||
2c820d9a CL |
3991 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
3992 | /* An impossible timestamp guarantees this value | |
3993 | * will never match a generated boot time. */ | |
3994 | verf[0] = 0; | |
3995 | verf[1] = (__be32)(NSEC_PER_SEC + 1); | |
3996 | } else { | |
f092075d CL |
3997 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
3998 | verf[0] = (__be32)nn->boot_time.tv_sec; | |
3999 | verf[1] = (__be32)nn->boot_time.tv_nsec; | |
2c820d9a | 4000 | } |
cd93710e CL |
4001 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
4002 | } | |
4003 | ||
e984a55a CL |
4004 | static unsigned int |
4005 | nfs4_init_nonuniform_client_string(const struct nfs_client *clp, | |
4006 | char *buf, size_t len) | |
4007 | { | |
4008 | unsigned int result; | |
4009 | ||
4010 | rcu_read_lock(); | |
4011 | result = scnprintf(buf, len, "Linux NFSv4.0 %s/%s %s", | |
4012 | clp->cl_ipaddr, | |
4013 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4014 | RPC_DISPLAY_ADDR), | |
4015 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4016 | RPC_DISPLAY_PROTO)); | |
4017 | rcu_read_unlock(); | |
4018 | return result; | |
4019 | } | |
4020 | ||
4021 | static unsigned int | |
4022 | nfs4_init_uniform_client_string(const struct nfs_client *clp, | |
4023 | char *buf, size_t len) | |
4024 | { | |
6f2ea7f2 CL |
4025 | char *nodename = clp->cl_rpcclient->cl_nodename; |
4026 | ||
4027 | if (nfs4_client_id_uniquifier[0] != '\0') | |
4028 | nodename = nfs4_client_id_uniquifier; | |
e984a55a CL |
4029 | return scnprintf(buf, len, "Linux NFSv%u.%u %s", |
4030 | clp->rpc_ops->version, clp->cl_minorversion, | |
6f2ea7f2 | 4031 | nodename); |
e984a55a CL |
4032 | } |
4033 | ||
6bbb4ae8 CL |
4034 | /** |
4035 | * nfs4_proc_setclientid - Negotiate client ID | |
4036 | * @clp: state data structure | |
4037 | * @program: RPC program for NFSv4 callback service | |
4038 | * @port: IP port number for NFS4 callback service | |
4039 | * @cred: RPC credential to use for this call | |
4040 | * @res: where to place the result | |
4041 | * | |
4042 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4043 | */ | |
bb8b27e5 TM |
4044 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
4045 | unsigned short port, struct rpc_cred *cred, | |
4046 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
4047 | { |
4048 | nfs4_verifier sc_verifier; | |
4049 | struct nfs4_setclientid setclientid = { | |
4050 | .sc_verifier = &sc_verifier, | |
4051 | .sc_prog = program, | |
f4eecd5d | 4052 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
4053 | }; |
4054 | struct rpc_message msg = { | |
4055 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
4056 | .rpc_argp = &setclientid, | |
bb8b27e5 | 4057 | .rpc_resp = res, |
286d7d6a | 4058 | .rpc_cred = cred, |
1da177e4 | 4059 | }; |
6bbb4ae8 | 4060 | int status; |
1da177e4 | 4061 | |
de734831 | 4062 | /* nfs_client_id4 */ |
f092075d | 4063 | nfs4_init_boot_verifier(clp, &sc_verifier); |
e984a55a CL |
4064 | if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags)) |
4065 | setclientid.sc_name_len = | |
4066 | nfs4_init_uniform_client_string(clp, | |
4067 | setclientid.sc_name, | |
4068 | sizeof(setclientid.sc_name)); | |
4069 | else | |
4070 | setclientid.sc_name_len = | |
4071 | nfs4_init_nonuniform_client_string(clp, | |
4072 | setclientid.sc_name, | |
4073 | sizeof(setclientid.sc_name)); | |
de734831 | 4074 | /* cb_client4 */ |
e984a55a | 4075 | rcu_read_lock(); |
de734831 | 4076 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, |
d4d3c507 CL |
4077 | sizeof(setclientid.sc_netid), |
4078 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4079 | RPC_DISPLAY_NETID)); | |
de734831 CL |
4080 | rcu_read_unlock(); |
4081 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, | |
d4d3c507 | 4082 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
4083 | clp->cl_ipaddr, port >> 8, port & 255); |
4084 | ||
6bbb4ae8 CL |
4085 | dprintk("NFS call setclientid auth=%s, '%.*s'\n", |
4086 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4087 | setclientid.sc_name_len, setclientid.sc_name); | |
4088 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
4089 | dprintk("NFS reply setclientid: %d\n", status); | |
4090 | return status; | |
1da177e4 LT |
4091 | } |
4092 | ||
6bbb4ae8 CL |
4093 | /** |
4094 | * nfs4_proc_setclientid_confirm - Confirm client ID | |
4095 | * @clp: state data structure | |
4096 | * @res: result of a previous SETCLIENTID | |
4097 | * @cred: RPC credential to use for this call | |
4098 | * | |
4099 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4100 | */ | |
fd954ae1 | 4101 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
4102 | struct nfs4_setclientid_res *arg, |
4103 | struct rpc_cred *cred) | |
1da177e4 LT |
4104 | { |
4105 | struct nfs_fsinfo fsinfo; | |
4106 | struct rpc_message msg = { | |
4107 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 4108 | .rpc_argp = arg, |
1da177e4 | 4109 | .rpc_resp = &fsinfo, |
286d7d6a | 4110 | .rpc_cred = cred, |
1da177e4 LT |
4111 | }; |
4112 | unsigned long now; | |
4113 | int status; | |
4114 | ||
6bbb4ae8 CL |
4115 | dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", |
4116 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4117 | clp->cl_clientid); | |
1da177e4 | 4118 | now = jiffies; |
1bd714f2 | 4119 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
4120 | if (status == 0) { |
4121 | spin_lock(&clp->cl_lock); | |
4122 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
4123 | clp->cl_last_renewal = now; | |
4124 | spin_unlock(&clp->cl_lock); | |
4125 | } | |
6bbb4ae8 | 4126 | dprintk("NFS reply setclientid_confirm: %d\n", status); |
1da177e4 LT |
4127 | return status; |
4128 | } | |
4129 | ||
fe650407 TM |
4130 | struct nfs4_delegreturndata { |
4131 | struct nfs4_delegreturnargs args; | |
fa178f29 | 4132 | struct nfs4_delegreturnres res; |
fe650407 TM |
4133 | struct nfs_fh fh; |
4134 | nfs4_stateid stateid; | |
26e976a8 | 4135 | unsigned long timestamp; |
fa178f29 | 4136 | struct nfs_fattr fattr; |
fe650407 TM |
4137 | int rpc_status; |
4138 | }; | |
4139 | ||
fe650407 TM |
4140 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
4141 | { | |
4142 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 4143 | |
14516c3a TM |
4144 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4145 | return; | |
938e1010 | 4146 | |
79708861 RL |
4147 | switch (task->tk_status) { |
4148 | case -NFS4ERR_STALE_STATEID: | |
4149 | case -NFS4ERR_EXPIRED: | |
4150 | case 0: | |
fa178f29 | 4151 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
4152 | break; |
4153 | default: | |
4154 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
4155 | -EAGAIN) { | |
d00c5d43 | 4156 | rpc_restart_call_prepare(task); |
79708861 RL |
4157 | return; |
4158 | } | |
4159 | } | |
4160 | data->rpc_status = task->tk_status; | |
fe650407 TM |
4161 | } |
4162 | ||
4163 | static void nfs4_delegreturn_release(void *calldata) | |
4164 | { | |
fe650407 TM |
4165 | kfree(calldata); |
4166 | } | |
4167 | ||
938e1010 AA |
4168 | #if defined(CONFIG_NFS_V4_1) |
4169 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
4170 | { | |
4171 | struct nfs4_delegreturndata *d_data; | |
4172 | ||
4173 | d_data = (struct nfs4_delegreturndata *)data; | |
4174 | ||
035168ab | 4175 | if (nfs4_setup_sequence(d_data->res.server, |
938e1010 | 4176 | &d_data->args.seq_args, |
9d12b216 | 4177 | &d_data->res.seq_res, task)) |
938e1010 AA |
4178 | return; |
4179 | rpc_call_start(task); | |
4180 | } | |
4181 | #endif /* CONFIG_NFS_V4_1 */ | |
4182 | ||
c8d149f3 | 4183 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
4184 | #if defined(CONFIG_NFS_V4_1) |
4185 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
4186 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
4187 | .rpc_call_done = nfs4_delegreturn_done, |
4188 | .rpc_release = nfs4_delegreturn_release, | |
4189 | }; | |
4190 | ||
e6f81075 | 4191 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
4192 | { |
4193 | struct nfs4_delegreturndata *data; | |
fa178f29 | 4194 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 4195 | struct rpc_task *task; |
5138fde0 TM |
4196 | struct rpc_message msg = { |
4197 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
4198 | .rpc_cred = cred, | |
4199 | }; | |
c970aa85 TM |
4200 | struct rpc_task_setup task_setup_data = { |
4201 | .rpc_client = server->client, | |
5138fde0 | 4202 | .rpc_message = &msg, |
c970aa85 TM |
4203 | .callback_ops = &nfs4_delegreturn_ops, |
4204 | .flags = RPC_TASK_ASYNC, | |
4205 | }; | |
e6f81075 | 4206 | int status = 0; |
fe650407 | 4207 | |
8535b2be | 4208 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
4209 | if (data == NULL) |
4210 | return -ENOMEM; | |
9d12b216 | 4211 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
4212 | data->args.fhandle = &data->fh; |
4213 | data->args.stateid = &data->stateid; | |
9e907fec | 4214 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 4215 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 4216 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
4217 | data->res.fattr = &data->fattr; |
4218 | data->res.server = server; | |
5138fde0 | 4219 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 4220 | data->timestamp = jiffies; |
fe650407 TM |
4221 | data->rpc_status = 0; |
4222 | ||
c970aa85 | 4223 | task_setup_data.callback_data = data; |
1174dd1f TM |
4224 | msg.rpc_argp = &data->args; |
4225 | msg.rpc_resp = &data->res; | |
c970aa85 | 4226 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 4227 | if (IS_ERR(task)) |
fe650407 | 4228 | return PTR_ERR(task); |
e6f81075 TM |
4229 | if (!issync) |
4230 | goto out; | |
fe650407 | 4231 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
4232 | if (status != 0) |
4233 | goto out; | |
4234 | status = data->rpc_status; | |
e144cbcc TM |
4235 | if (status == 0) |
4236 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
4237 | else | |
4238 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 4239 | out: |
e6b3c4db | 4240 | rpc_put_task(task); |
fe650407 | 4241 | return status; |
1da177e4 LT |
4242 | } |
4243 | ||
e6f81075 | 4244 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
4245 | { |
4246 | struct nfs_server *server = NFS_SERVER(inode); | |
4247 | struct nfs4_exception exception = { }; | |
4248 | int err; | |
4249 | do { | |
e6f81075 | 4250 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
4251 | switch (err) { |
4252 | case -NFS4ERR_STALE_STATEID: | |
4253 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
4254 | case 0: |
4255 | return 0; | |
4256 | } | |
4257 | err = nfs4_handle_exception(server, err, &exception); | |
4258 | } while (exception.retry); | |
4259 | return err; | |
4260 | } | |
4261 | ||
4262 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
4263 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
4264 | ||
4265 | /* | |
4266 | * sleep, with exponential backoff, and retry the LOCK operation. | |
4267 | */ | |
4268 | static unsigned long | |
4269 | nfs4_set_lock_task_retry(unsigned long timeout) | |
4270 | { | |
d310310c | 4271 | freezable_schedule_timeout_killable(timeout); |
1da177e4 LT |
4272 | timeout <<= 1; |
4273 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
4274 | return NFS4_LOCK_MAXTIMEOUT; | |
4275 | return timeout; | |
4276 | } | |
4277 | ||
1da177e4 LT |
4278 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4279 | { | |
4280 | struct inode *inode = state->inode; | |
4281 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 4282 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 4283 | struct nfs_lockt_args arg = { |
1da177e4 | 4284 | .fh = NFS_FH(inode), |
911d1aaf | 4285 | .fl = request, |
1da177e4 | 4286 | }; |
911d1aaf TM |
4287 | struct nfs_lockt_res res = { |
4288 | .denied = request, | |
1da177e4 LT |
4289 | }; |
4290 | struct rpc_message msg = { | |
4291 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
4292 | .rpc_argp = &arg, | |
4293 | .rpc_resp = &res, | |
4294 | .rpc_cred = state->owner->so_cred, | |
4295 | }; | |
1da177e4 LT |
4296 | struct nfs4_lock_state *lsp; |
4297 | int status; | |
4298 | ||
911d1aaf | 4299 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
4300 | status = nfs4_set_lock_state(state, request); |
4301 | if (status != 0) | |
4302 | goto out; | |
4303 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 4304 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4305 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 4306 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
4307 | switch (status) { |
4308 | case 0: | |
4309 | request->fl_type = F_UNLCK; | |
4310 | break; | |
4311 | case -NFS4ERR_DENIED: | |
4312 | status = 0; | |
1da177e4 | 4313 | } |
70cc6487 | 4314 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 4315 | out: |
1da177e4 LT |
4316 | return status; |
4317 | } | |
4318 | ||
4319 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4320 | { | |
4321 | struct nfs4_exception exception = { }; | |
4322 | int err; | |
4323 | ||
4324 | do { | |
4325 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
4326 | _nfs4_proc_getlk(state, cmd, request), | |
4327 | &exception); | |
4328 | } while (exception.retry); | |
4329 | return err; | |
4330 | } | |
4331 | ||
4332 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
4333 | { | |
4334 | int res = 0; | |
4335 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
4336 | case FL_POSIX: | |
4337 | res = posix_lock_file_wait(file, fl); | |
4338 | break; | |
4339 | case FL_FLOCK: | |
4340 | res = flock_lock_file_wait(file, fl); | |
4341 | break; | |
4342 | default: | |
4343 | BUG(); | |
4344 | } | |
1da177e4 LT |
4345 | return res; |
4346 | } | |
4347 | ||
faf5f49c | 4348 | struct nfs4_unlockdata { |
911d1aaf TM |
4349 | struct nfs_locku_args arg; |
4350 | struct nfs_locku_res res; | |
faf5f49c TM |
4351 | struct nfs4_lock_state *lsp; |
4352 | struct nfs_open_context *ctx; | |
911d1aaf TM |
4353 | struct file_lock fl; |
4354 | const struct nfs_server *server; | |
26e976a8 | 4355 | unsigned long timestamp; |
faf5f49c TM |
4356 | }; |
4357 | ||
911d1aaf TM |
4358 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
4359 | struct nfs_open_context *ctx, | |
4360 | struct nfs4_lock_state *lsp, | |
4361 | struct nfs_seqid *seqid) | |
4362 | { | |
4363 | struct nfs4_unlockdata *p; | |
4364 | struct inode *inode = lsp->ls_state->inode; | |
4365 | ||
8535b2be | 4366 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
4367 | if (p == NULL) |
4368 | return NULL; | |
4369 | p->arg.fh = NFS_FH(inode); | |
4370 | p->arg.fl = &p->fl; | |
4371 | p->arg.seqid = seqid; | |
c1d51931 | 4372 | p->res.seqid = seqid; |
911d1aaf TM |
4373 | p->arg.stateid = &lsp->ls_stateid; |
4374 | p->lsp = lsp; | |
4375 | atomic_inc(&lsp->ls_count); | |
4376 | /* Ensure we don't close file until we're done freeing locks! */ | |
4377 | p->ctx = get_nfs_open_context(ctx); | |
4378 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4379 | p->server = NFS_SERVER(inode); | |
4380 | return p; | |
4381 | } | |
4382 | ||
06f814a3 | 4383 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 4384 | { |
963d8fe5 | 4385 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 4386 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
4387 | nfs4_put_lock_state(calldata->lsp); |
4388 | put_nfs_open_context(calldata->ctx); | |
4389 | kfree(calldata); | |
faf5f49c TM |
4390 | } |
4391 | ||
963d8fe5 | 4392 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 4393 | { |
963d8fe5 | 4394 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4395 | |
14516c3a TM |
4396 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
4397 | return; | |
faf5f49c TM |
4398 | switch (task->tk_status) { |
4399 | case 0: | |
f597c537 TM |
4400 | nfs4_stateid_copy(&calldata->lsp->ls_stateid, |
4401 | &calldata->res.stateid); | |
26e976a8 | 4402 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 4403 | break; |
9e33bed5 TM |
4404 | case -NFS4ERR_BAD_STATEID: |
4405 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
4406 | case -NFS4ERR_STALE_STATEID: |
4407 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
4408 | break; |
4409 | default: | |
9e33bed5 | 4410 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
d00c5d43 | 4411 | rpc_restart_call_prepare(task); |
faf5f49c | 4412 | } |
2b1bc308 | 4413 | nfs_release_seqid(calldata->arg.seqid); |
faf5f49c TM |
4414 | } |
4415 | ||
4ce70ada | 4416 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 4417 | { |
4ce70ada | 4418 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4419 | |
911d1aaf | 4420 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c | 4421 | return; |
795a88c9 | 4422 | if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) { |
963d8fe5 TM |
4423 | /* Note: exit _without_ running nfs4_locku_done */ |
4424 | task->tk_action = NULL; | |
faf5f49c TM |
4425 | return; |
4426 | } | |
26e976a8 | 4427 | calldata->timestamp = jiffies; |
035168ab | 4428 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 4429 | &calldata->arg.seq_args, |
2240a9e2 TM |
4430 | &calldata->res.seq_res, |
4431 | task) != 0) | |
4432 | nfs_release_seqid(calldata->arg.seqid); | |
4433 | else | |
4434 | rpc_call_start(task); | |
faf5f49c TM |
4435 | } |
4436 | ||
963d8fe5 | 4437 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 4438 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 4439 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 4440 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
4441 | }; |
4442 | ||
a5d16a4d TM |
4443 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
4444 | struct nfs_open_context *ctx, | |
4445 | struct nfs4_lock_state *lsp, | |
4446 | struct nfs_seqid *seqid) | |
4447 | { | |
4448 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
4449 | struct rpc_message msg = { |
4450 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
4451 | .rpc_cred = ctx->cred, | |
4452 | }; | |
c970aa85 TM |
4453 | struct rpc_task_setup task_setup_data = { |
4454 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 4455 | .rpc_message = &msg, |
c970aa85 | 4456 | .callback_ops = &nfs4_locku_ops, |
101070ca | 4457 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4458 | .flags = RPC_TASK_ASYNC, |
4459 | }; | |
a5d16a4d | 4460 | |
137d6aca FF |
4461 | /* Ensure this is an unlock - when canceling a lock, the |
4462 | * canceled lock is passed in, and it won't be an unlock. | |
4463 | */ | |
4464 | fl->fl_type = F_UNLCK; | |
4465 | ||
a5d16a4d TM |
4466 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
4467 | if (data == NULL) { | |
4468 | nfs_free_seqid(seqid); | |
4469 | return ERR_PTR(-ENOMEM); | |
4470 | } | |
4471 | ||
9d12b216 | 4472 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4473 | msg.rpc_argp = &data->arg; |
4474 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4475 | task_setup_data.callback_data = data; |
4476 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
4477 | } |
4478 | ||
faf5f49c TM |
4479 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
4480 | { | |
19e03c57 | 4481 | struct nfs_inode *nfsi = NFS_I(state->inode); |
911d1aaf | 4482 | struct nfs_seqid *seqid; |
1da177e4 | 4483 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
4484 | struct rpc_task *task; |
4485 | int status = 0; | |
536ff0f8 | 4486 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 4487 | |
8d0a8a9d | 4488 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
4489 | /* Unlock _before_ we do the RPC call */ |
4490 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
4491 | down_read(&nfsi->rwsem); |
4492 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
4493 | up_read(&nfsi->rwsem); | |
9b073574 | 4494 | goto out; |
19e03c57 TM |
4495 | } |
4496 | up_read(&nfsi->rwsem); | |
8d0a8a9d | 4497 | if (status != 0) |
9b073574 TM |
4498 | goto out; |
4499 | /* Is this a delegated lock? */ | |
4500 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
4501 | goto out; | |
8d0a8a9d | 4502 | lsp = request->fl_u.nfs4_fl.owner; |
8535b2be | 4503 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 4504 | status = -ENOMEM; |
911d1aaf | 4505 | if (seqid == NULL) |
9b073574 | 4506 | goto out; |
cd3758e3 | 4507 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
4508 | status = PTR_ERR(task); |
4509 | if (IS_ERR(task)) | |
9b073574 | 4510 | goto out; |
a5d16a4d | 4511 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 4512 | rpc_put_task(task); |
9b073574 | 4513 | out: |
536ff0f8 | 4514 | request->fl_flags = fl_flags; |
1da177e4 LT |
4515 | return status; |
4516 | } | |
4517 | ||
a5d16a4d TM |
4518 | struct nfs4_lockdata { |
4519 | struct nfs_lock_args arg; | |
4520 | struct nfs_lock_res res; | |
4521 | struct nfs4_lock_state *lsp; | |
4522 | struct nfs_open_context *ctx; | |
4523 | struct file_lock fl; | |
26e976a8 | 4524 | unsigned long timestamp; |
a5d16a4d TM |
4525 | int rpc_status; |
4526 | int cancelled; | |
66179efe | 4527 | struct nfs_server *server; |
a5d16a4d TM |
4528 | }; |
4529 | ||
4530 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
4531 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
4532 | gfp_t gfp_mask) | |
1da177e4 | 4533 | { |
a5d16a4d TM |
4534 | struct nfs4_lockdata *p; |
4535 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 4536 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 4537 | |
8535b2be | 4538 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
4539 | if (p == NULL) |
4540 | return NULL; | |
4541 | ||
4542 | p->arg.fh = NFS_FH(inode); | |
4543 | p->arg.fl = &p->fl; | |
8535b2be | 4544 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4545 | if (p->arg.open_seqid == NULL) |
4546 | goto out_free; | |
8535b2be | 4547 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4548 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4549 | goto out_free_seqid; |
a5d16a4d | 4550 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4551 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 4552 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4553 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 4554 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4555 | p->lsp = lsp; |
66179efe | 4556 | p->server = server; |
a5d16a4d TM |
4557 | atomic_inc(&lsp->ls_count); |
4558 | p->ctx = get_nfs_open_context(ctx); | |
4559 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4560 | return p; | |
2f74c0a0 TM |
4561 | out_free_seqid: |
4562 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4563 | out_free: |
4564 | kfree(p); | |
4565 | return NULL; | |
4566 | } | |
4567 | ||
4568 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4569 | { | |
4570 | struct nfs4_lockdata *data = calldata; | |
4571 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4572 | |
3110ff80 | 4573 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
4574 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
4575 | return; | |
a5d16a4d TM |
4576 | /* Do we need to do an open_to_lock_owner? */ |
4577 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 | 4578 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
2240a9e2 | 4579 | goto out_release_lock_seqid; |
a5d16a4d TM |
4580 | data->arg.open_stateid = &state->stateid; |
4581 | data->arg.new_lock_owner = 1; | |
c1d51931 | 4582 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4583 | } else |
4584 | data->arg.new_lock_owner = 0; | |
26e976a8 | 4585 | data->timestamp = jiffies; |
035168ab TM |
4586 | if (nfs4_setup_sequence(data->server, |
4587 | &data->arg.seq_args, | |
2240a9e2 TM |
4588 | &data->res.seq_res, |
4589 | task) == 0) { | |
4590 | rpc_call_start(task); | |
66179efe | 4591 | return; |
2240a9e2 TM |
4592 | } |
4593 | nfs_release_seqid(data->arg.open_seqid); | |
4594 | out_release_lock_seqid: | |
4595 | nfs_release_seqid(data->arg.lock_seqid); | |
4596 | dprintk("%s: done!, ret = %d\n", __func__, task->tk_status); | |
a5d16a4d TM |
4597 | } |
4598 | ||
b257957e AB |
4599 | static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata) |
4600 | { | |
4601 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
4602 | nfs4_lock_prepare(task, calldata); | |
4603 | } | |
4604 | ||
a5d16a4d TM |
4605 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4606 | { | |
4607 | struct nfs4_lockdata *data = calldata; | |
4608 | ||
3110ff80 | 4609 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4610 | |
14516c3a TM |
4611 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4612 | return; | |
66179efe | 4613 | |
a5d16a4d | 4614 | data->rpc_status = task->tk_status; |
a5d16a4d | 4615 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4616 | if (data->rpc_status == 0) |
4617 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4618 | else | |
4619 | goto out; | |
4620 | } | |
4621 | if (data->rpc_status == 0) { | |
f597c537 | 4622 | nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid); |
795a88c9 | 4623 | set_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags); |
3d4ff43d | 4624 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 4625 | } |
a5d16a4d | 4626 | out: |
3110ff80 | 4627 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4628 | } |
4629 | ||
4630 | static void nfs4_lock_release(void *calldata) | |
4631 | { | |
4632 | struct nfs4_lockdata *data = calldata; | |
4633 | ||
3110ff80 | 4634 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4635 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4636 | if (data->cancelled != 0) { |
4637 | struct rpc_task *task; | |
4638 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4639 | data->arg.lock_seqid); | |
4640 | if (!IS_ERR(task)) | |
bf294b41 | 4641 | rpc_put_task_async(task); |
3110ff80 | 4642 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4643 | } else |
4644 | nfs_free_seqid(data->arg.lock_seqid); | |
4645 | nfs4_put_lock_state(data->lsp); | |
4646 | put_nfs_open_context(data->ctx); | |
4647 | kfree(data); | |
3110ff80 | 4648 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4649 | } |
4650 | ||
4651 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4652 | .rpc_call_prepare = nfs4_lock_prepare, | |
4653 | .rpc_call_done = nfs4_lock_done, | |
4654 | .rpc_release = nfs4_lock_release, | |
4655 | }; | |
4656 | ||
b257957e AB |
4657 | static const struct rpc_call_ops nfs4_recover_lock_ops = { |
4658 | .rpc_call_prepare = nfs4_recover_lock_prepare, | |
4659 | .rpc_call_done = nfs4_lock_done, | |
4660 | .rpc_release = nfs4_lock_release, | |
4661 | }; | |
4662 | ||
2bee72a6 TM |
4663 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4664 | { | |
2bee72a6 TM |
4665 | switch (error) { |
4666 | case -NFS4ERR_ADMIN_REVOKED: | |
4667 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 4668 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 | 4669 | if (new_lock_owner != 0 || |
795a88c9 | 4670 | test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0) |
ecac799a | 4671 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
4672 | break; |
4673 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 4674 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
4675 | case -NFS4ERR_EXPIRED: |
4676 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
4677 | }; |
4678 | } | |
4679 | ||
afe6c27c | 4680 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4681 | { |
4682 | struct nfs4_lockdata *data; | |
4683 | struct rpc_task *task; | |
5138fde0 TM |
4684 | struct rpc_message msg = { |
4685 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4686 | .rpc_cred = state->owner->so_cred, | |
4687 | }; | |
c970aa85 TM |
4688 | struct rpc_task_setup task_setup_data = { |
4689 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4690 | .rpc_message = &msg, |
c970aa85 | 4691 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4692 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4693 | .flags = RPC_TASK_ASYNC, |
4694 | }; | |
a5d16a4d TM |
4695 | int ret; |
4696 | ||
3110ff80 | 4697 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4698 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4699 | fl->fl_u.nfs4_fl.owner, |
4700 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4701 | if (data == NULL) |
4702 | return -ENOMEM; | |
4703 | if (IS_SETLKW(cmd)) | |
4704 | data->arg.block = 1; | |
b257957e AB |
4705 | if (recovery_type > NFS_LOCK_NEW) { |
4706 | if (recovery_type == NFS_LOCK_RECLAIM) | |
afe6c27c | 4707 | data->arg.reclaim = NFS_LOCK_RECLAIM; |
b257957e AB |
4708 | task_setup_data.callback_ops = &nfs4_recover_lock_ops; |
4709 | } | |
9d12b216 | 4710 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4711 | msg.rpc_argp = &data->arg; |
4712 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4713 | task_setup_data.callback_data = data; |
4714 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 4715 | if (IS_ERR(task)) |
a5d16a4d | 4716 | return PTR_ERR(task); |
a5d16a4d TM |
4717 | ret = nfs4_wait_for_completion_rpc_task(task); |
4718 | if (ret == 0) { | |
4719 | ret = data->rpc_status; | |
2bee72a6 TM |
4720 | if (ret) |
4721 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4722 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4723 | } else |
4724 | data->cancelled = 1; | |
e6b3c4db | 4725 | rpc_put_task(task); |
3110ff80 | 4726 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4727 | return ret; |
1da177e4 LT |
4728 | } |
4729 | ||
4730 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4731 | { | |
202b50dc | 4732 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4733 | struct nfs4_exception exception = { |
4734 | .inode = state->inode, | |
4735 | }; | |
202b50dc TM |
4736 | int err; |
4737 | ||
4738 | do { | |
42a2d13e TM |
4739 | /* Cache the lock if possible... */ |
4740 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4741 | return 0; | |
afe6c27c | 4742 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 4743 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
4744 | break; |
4745 | nfs4_handle_exception(server, err, &exception); | |
4746 | } while (exception.retry); | |
4747 | return err; | |
1da177e4 LT |
4748 | } |
4749 | ||
4750 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4751 | { | |
202b50dc | 4752 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4753 | struct nfs4_exception exception = { |
4754 | .inode = state->inode, | |
4755 | }; | |
202b50dc TM |
4756 | int err; |
4757 | ||
6bfc93ef TM |
4758 | err = nfs4_set_lock_state(state, request); |
4759 | if (err != 0) | |
4760 | return err; | |
202b50dc | 4761 | do { |
42a2d13e TM |
4762 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4763 | return 0; | |
afe6c27c | 4764 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
4765 | switch (err) { |
4766 | default: | |
4767 | goto out; | |
4768 | case -NFS4ERR_GRACE: | |
4769 | case -NFS4ERR_DELAY: | |
4770 | nfs4_handle_exception(server, err, &exception); | |
4771 | err = 0; | |
4772 | } | |
202b50dc | 4773 | } while (exception.retry); |
a9ed2e25 | 4774 | out: |
202b50dc | 4775 | return err; |
1da177e4 LT |
4776 | } |
4777 | ||
f062eb6c | 4778 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd CL |
4779 | /** |
4780 | * nfs41_check_expired_locks - possibly free a lock stateid | |
4781 | * | |
4782 | * @state: NFSv4 state for an inode | |
4783 | * | |
4784 | * Returns NFS_OK if recovery for this stateid is now finished. | |
4785 | * Otherwise a negative NFS4ERR value is returned. | |
4786 | */ | |
b01dd1d8 | 4787 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 4788 | { |
eb64cf96 | 4789 | int status, ret = -NFS4ERR_BAD_STATEID; |
b01dd1d8 | 4790 | struct nfs4_lock_state *lsp; |
f062eb6c BS |
4791 | struct nfs_server *server = NFS_SERVER(state->inode); |
4792 | ||
b01dd1d8 | 4793 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
795a88c9 | 4794 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { |
b01dd1d8 BS |
4795 | status = nfs41_test_stateid(server, &lsp->ls_stateid); |
4796 | if (status != NFS_OK) { | |
3e60ffdd CL |
4797 | /* Free the stateid unless the server |
4798 | * informs us the stateid is unrecognized. */ | |
89af2739 CL |
4799 | if (status != -NFS4ERR_BAD_STATEID) |
4800 | nfs41_free_stateid(server, | |
4801 | &lsp->ls_stateid); | |
795a88c9 | 4802 | clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); |
b01dd1d8 BS |
4803 | ret = status; |
4804 | } | |
4805 | } | |
4806 | }; | |
4807 | ||
4808 | return ret; | |
4809 | } | |
4810 | ||
4811 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4812 | { | |
4813 | int status = NFS_OK; | |
4814 | ||
4815 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
4816 | status = nfs41_check_expired_locks(state); | |
eb64cf96 CL |
4817 | if (status != NFS_OK) |
4818 | status = nfs4_lock_expired(state, request); | |
4819 | return status; | |
f062eb6c BS |
4820 | } |
4821 | #endif | |
4822 | ||
1da177e4 LT |
4823 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4824 | { | |
19e03c57 | 4825 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 4826 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 4827 | int status = -ENOLCK; |
1da177e4 | 4828 | |
8e469ebd TM |
4829 | if ((fl_flags & FL_POSIX) && |
4830 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
4831 | goto out; | |
6bfc93ef | 4832 | /* Is this a delegated open? */ |
6bfc93ef TM |
4833 | status = nfs4_set_lock_state(state, request); |
4834 | if (status != 0) | |
4835 | goto out; | |
01c3b861 TM |
4836 | request->fl_flags |= FL_ACCESS; |
4837 | status = do_vfs_lock(request->fl_file, request); | |
4838 | if (status < 0) | |
4839 | goto out; | |
19e03c57 | 4840 | down_read(&nfsi->rwsem); |
01c3b861 | 4841 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 4842 | /* Yes: cache locks! */ |
01c3b861 | 4843 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
4844 | request->fl_flags = fl_flags & ~FL_SLEEP; |
4845 | status = do_vfs_lock(request->fl_file, request); | |
4846 | goto out_unlock; | |
01c3b861 | 4847 | } |
afe6c27c | 4848 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 4849 | if (status != 0) |
01c3b861 | 4850 | goto out_unlock; |
6bfc93ef | 4851 | /* Note: we always want to sleep here! */ |
01c3b861 | 4852 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 4853 | if (do_vfs_lock(request->fl_file, request) < 0) |
a030889a WAA |
4854 | printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " |
4855 | "manager!\n", __func__); | |
01c3b861 | 4856 | out_unlock: |
19e03c57 | 4857 | up_read(&nfsi->rwsem); |
01c3b861 TM |
4858 | out: |
4859 | request->fl_flags = fl_flags; | |
1da177e4 LT |
4860 | return status; |
4861 | } | |
4862 | ||
4863 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4864 | { | |
a1d0b5ee TM |
4865 | struct nfs4_exception exception = { |
4866 | .state = state, | |
05ffe24f | 4867 | .inode = state->inode, |
a1d0b5ee | 4868 | }; |
1da177e4 LT |
4869 | int err; |
4870 | ||
4871 | do { | |
965b5d67 TM |
4872 | err = _nfs4_proc_setlk(state, cmd, request); |
4873 | if (err == -NFS4ERR_DENIED) | |
4874 | err = -EAGAIN; | |
1da177e4 | 4875 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 4876 | err, &exception); |
1da177e4 LT |
4877 | } while (exception.retry); |
4878 | return err; | |
4879 | } | |
4880 | ||
4881 | static int | |
4882 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
4883 | { | |
4884 | struct nfs_open_context *ctx; | |
4885 | struct nfs4_state *state; | |
4886 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
4887 | int status; | |
4888 | ||
4889 | /* verify open state */ | |
cd3758e3 | 4890 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
4891 | state = ctx->state; |
4892 | ||
4893 | if (request->fl_start < 0 || request->fl_end < 0) | |
4894 | return -EINVAL; | |
4895 | ||
d953126a TM |
4896 | if (IS_GETLK(cmd)) { |
4897 | if (state != NULL) | |
4898 | return nfs4_proc_getlk(state, F_GETLK, request); | |
4899 | return 0; | |
4900 | } | |
1da177e4 LT |
4901 | |
4902 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
4903 | return -EINVAL; | |
4904 | ||
d953126a TM |
4905 | if (request->fl_type == F_UNLCK) { |
4906 | if (state != NULL) | |
4907 | return nfs4_proc_unlck(state, cmd, request); | |
4908 | return 0; | |
4909 | } | |
1da177e4 | 4910 | |
d953126a TM |
4911 | if (state == NULL) |
4912 | return -ENOLCK; | |
55725513 TM |
4913 | /* |
4914 | * Don't rely on the VFS having checked the file open mode, | |
4915 | * since it won't do this for flock() locks. | |
4916 | */ | |
f44106e2 | 4917 | switch (request->fl_type) { |
55725513 TM |
4918 | case F_RDLCK: |
4919 | if (!(filp->f_mode & FMODE_READ)) | |
4920 | return -EBADF; | |
4921 | break; | |
4922 | case F_WRLCK: | |
4923 | if (!(filp->f_mode & FMODE_WRITE)) | |
4924 | return -EBADF; | |
4925 | } | |
4926 | ||
1da177e4 LT |
4927 | do { |
4928 | status = nfs4_proc_setlk(state, cmd, request); | |
4929 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
4930 | break; | |
4931 | timeout = nfs4_set_lock_task_retry(timeout); | |
4932 | status = -ERESTARTSYS; | |
4933 | if (signalled()) | |
4934 | break; | |
4935 | } while(status < 0); | |
1da177e4 LT |
4936 | return status; |
4937 | } | |
4938 | ||
888e694c TM |
4939 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
4940 | { | |
4941 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4942 | struct nfs4_exception exception = { }; | |
4943 | int err; | |
4944 | ||
4945 | err = nfs4_set_lock_state(state, fl); | |
4946 | if (err != 0) | |
4947 | goto out; | |
4948 | do { | |
afe6c27c | 4949 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
d5122201 TM |
4950 | switch (err) { |
4951 | default: | |
a030889a WAA |
4952 | printk(KERN_ERR "NFS: %s: unhandled error " |
4953 | "%d.\n", __func__, err); | |
d5122201 | 4954 | case 0: |
965b5d67 | 4955 | case -ESTALE: |
d5122201 TM |
4956 | goto out; |
4957 | case -NFS4ERR_EXPIRED: | |
0ced63d1 | 4958 | nfs4_schedule_stateid_recovery(server, state); |
d5122201 | 4959 | case -NFS4ERR_STALE_CLIENTID: |
965b5d67 | 4960 | case -NFS4ERR_STALE_STATEID: |
0400a6b0 TM |
4961 | nfs4_schedule_lease_recovery(server->nfs_client); |
4962 | goto out; | |
74e7bb73 RL |
4963 | case -NFS4ERR_BADSESSION: |
4964 | case -NFS4ERR_BADSLOT: | |
4965 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4966 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4967 | case -NFS4ERR_DEADSESSION: | |
9f594791 | 4968 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); |
d5122201 | 4969 | goto out; |
965b5d67 TM |
4970 | case -ERESTARTSYS: |
4971 | /* | |
4972 | * The show must go on: exit, but mark the | |
4973 | * stateid as needing recovery. | |
4974 | */ | |
a1d0b5ee | 4975 | case -NFS4ERR_DELEG_REVOKED: |
965b5d67 TM |
4976 | case -NFS4ERR_ADMIN_REVOKED: |
4977 | case -NFS4ERR_BAD_STATEID: | |
4978 | case -NFS4ERR_OPENMODE: | |
0400a6b0 | 4979 | nfs4_schedule_stateid_recovery(server, state); |
965b5d67 TM |
4980 | err = 0; |
4981 | goto out; | |
168667c4 TM |
4982 | case -EKEYEXPIRED: |
4983 | /* | |
4984 | * User RPCSEC_GSS context has expired. | |
4985 | * We cannot recover this stateid now, so | |
4986 | * skip it and allow recovery thread to | |
4987 | * proceed. | |
4988 | */ | |
4989 | err = 0; | |
4990 | goto out; | |
965b5d67 TM |
4991 | case -ENOMEM: |
4992 | case -NFS4ERR_DENIED: | |
4993 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
4994 | err = 0; | |
4995 | goto out; | |
d5122201 TM |
4996 | case -NFS4ERR_DELAY: |
4997 | break; | |
4998 | } | |
888e694c TM |
4999 | err = nfs4_handle_exception(server, err, &exception); |
5000 | } while (exception.retry); | |
5001 | out: | |
5002 | return err; | |
5003 | } | |
6b3b5496 | 5004 | |
cf470c3e TM |
5005 | struct nfs_release_lockowner_data { |
5006 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 5007 | struct nfs_server *server; |
cf470c3e TM |
5008 | struct nfs_release_lockowner_args args; |
5009 | }; | |
5010 | ||
d3c7b7cc TM |
5011 | static void nfs4_release_lockowner_release(void *calldata) |
5012 | { | |
cf470c3e | 5013 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 5014 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
5015 | kfree(calldata); |
5016 | } | |
5017 | ||
17280175 | 5018 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
d3c7b7cc TM |
5019 | .rpc_release = nfs4_release_lockowner_release, |
5020 | }; | |
5021 | ||
cf470c3e | 5022 | int nfs4_release_lockowner(struct nfs4_lock_state *lsp) |
d3c7b7cc TM |
5023 | { |
5024 | struct nfs_server *server = lsp->ls_state->owner->so_server; | |
cf470c3e | 5025 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
5026 | struct rpc_message msg = { |
5027 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
5028 | }; | |
5029 | ||
5030 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
cf470c3e TM |
5031 | return -EINVAL; |
5032 | data = kmalloc(sizeof(*data), GFP_NOFS); | |
5033 | if (!data) | |
5034 | return -ENOMEM; | |
5035 | data->lsp = lsp; | |
5ae67c4f | 5036 | data->server = server; |
cf470c3e TM |
5037 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
5038 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
5039 | data->args.lock_owner.s_dev = server->s_dev; | |
5040 | msg.rpc_argp = &data->args; | |
5041 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); | |
5042 | return 0; | |
d3c7b7cc TM |
5043 | } |
5044 | ||
aa1870af BF |
5045 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
5046 | ||
64c2ce8b AK |
5047 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
5048 | const void *buf, size_t buflen, | |
5049 | int flags, int type) | |
6b3b5496 | 5050 | { |
64c2ce8b AK |
5051 | if (strcmp(key, "") != 0) |
5052 | return -EINVAL; | |
4b580ee3 | 5053 | |
64c2ce8b | 5054 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5055 | } |
5056 | ||
64c2ce8b AK |
5057 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
5058 | void *buf, size_t buflen, int type) | |
6b3b5496 | 5059 | { |
64c2ce8b AK |
5060 | if (strcmp(key, "") != 0) |
5061 | return -EINVAL; | |
aa1870af | 5062 | |
64c2ce8b | 5063 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5064 | } |
5065 | ||
64c2ce8b AK |
5066 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
5067 | size_t list_len, const char *name, | |
5068 | size_t name_len, int type) | |
6b3b5496 | 5069 | { |
64c2ce8b | 5070 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 5071 | |
096455a2 BF |
5072 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
5073 | return 0; | |
64c2ce8b AK |
5074 | |
5075 | if (list && len <= list_len) | |
5076 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 5077 | return len; |
6b3b5496 BF |
5078 | } |
5079 | ||
533eb461 AA |
5080 | /* |
5081 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
5082 | */ | |
69aaaae1 TM |
5083 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
5084 | { | |
533eb461 AA |
5085 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
5086 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
5087 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 5088 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
5089 | return; |
5090 | ||
5091 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 5092 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
5093 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
5094 | fattr->nlink = 2; | |
5095 | } | |
5096 | ||
f05d147f BS |
5097 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5098 | const struct qstr *name, | |
5099 | struct nfs4_fs_locations *fs_locations, | |
5100 | struct page *page) | |
683b57b4 TM |
5101 | { |
5102 | struct nfs_server *server = NFS_SERVER(dir); | |
5103 | u32 bitmask[2] = { | |
361e624f | 5104 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
5105 | }; |
5106 | struct nfs4_fs_locations_arg args = { | |
5107 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 5108 | .name = name, |
683b57b4 TM |
5109 | .page = page, |
5110 | .bitmask = bitmask, | |
5111 | }; | |
22958463 BH |
5112 | struct nfs4_fs_locations_res res = { |
5113 | .fs_locations = fs_locations, | |
5114 | }; | |
683b57b4 TM |
5115 | struct rpc_message msg = { |
5116 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
5117 | .rpc_argp = &args, | |
22958463 | 5118 | .rpc_resp = &res, |
683b57b4 TM |
5119 | }; |
5120 | int status; | |
5121 | ||
3110ff80 | 5122 | dprintk("%s: start\n", __func__); |
533eb461 AA |
5123 | |
5124 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
5125 | * is not supported */ | |
5126 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
5127 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
5128 | else | |
5129 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
5130 | ||
c228fd3a | 5131 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 5132 | fs_locations->server = server; |
830b8e33 | 5133 | fs_locations->nlocations = 0; |
f05d147f | 5134 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 5135 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
5136 | return status; |
5137 | } | |
5138 | ||
f05d147f BS |
5139 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5140 | const struct qstr *name, | |
5141 | struct nfs4_fs_locations *fs_locations, | |
5142 | struct page *page) | |
db0a9593 BS |
5143 | { |
5144 | struct nfs4_exception exception = { }; | |
5145 | int err; | |
5146 | do { | |
5147 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
f05d147f | 5148 | _nfs4_proc_fs_locations(client, dir, name, fs_locations, page), |
db0a9593 BS |
5149 | &exception); |
5150 | } while (exception.retry); | |
5151 | return err; | |
5152 | } | |
5153 | ||
5a5ea0d4 BS |
5154 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) |
5155 | { | |
5156 | int status; | |
5157 | struct nfs4_secinfo_arg args = { | |
5158 | .dir_fh = NFS_FH(dir), | |
5159 | .name = name, | |
5160 | }; | |
5161 | struct nfs4_secinfo_res res = { | |
5162 | .flavors = flavors, | |
5163 | }; | |
5164 | struct rpc_message msg = { | |
5165 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
5166 | .rpc_argp = &args, | |
5167 | .rpc_resp = &res, | |
5168 | }; | |
5169 | ||
5170 | dprintk("NFS call secinfo %s\n", name->name); | |
5171 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); | |
5172 | dprintk("NFS reply secinfo: %d\n", status); | |
5173 | return status; | |
5174 | } | |
5175 | ||
72de53ec BS |
5176 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
5177 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
5178 | { |
5179 | struct nfs4_exception exception = { }; | |
5180 | int err; | |
5181 | do { | |
5182 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
5183 | _nfs4_proc_secinfo(dir, name, flavors), | |
5184 | &exception); | |
5185 | } while (exception.retry); | |
5186 | return err; | |
5187 | } | |
5188 | ||
557134a3 | 5189 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
5190 | /* |
5191 | * Check the exchange flags returned by the server for invalid flags, having | |
5192 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
5193 | * DS flags set. | |
5194 | */ | |
5195 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
5196 | { | |
5197 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
5198 | goto out_inval; | |
5199 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
5200 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
5201 | goto out_inval; | |
5202 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
5203 | goto out_inval; | |
5204 | return NFS_OK; | |
5205 | out_inval: | |
5206 | return -NFS4ERR_INVAL; | |
5207 | } | |
5208 | ||
78fe0f41 | 5209 | static bool |
79d4e1f0 CL |
5210 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
5211 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
5212 | { |
5213 | if (a->server_scope_sz == b->server_scope_sz && | |
5214 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
5215 | return true; | |
5216 | ||
5217 | return false; | |
5218 | } | |
5219 | ||
7c44f1ae WAA |
5220 | /* |
5221 | * nfs4_proc_bind_conn_to_session() | |
5222 | * | |
5223 | * The 4.1 client currently uses the same TCP connection for the | |
5224 | * fore and backchannel. | |
5225 | */ | |
2cf047c9 | 5226 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred) |
7c44f1ae WAA |
5227 | { |
5228 | int status; | |
5229 | struct nfs41_bind_conn_to_session_res res; | |
5230 | struct rpc_message msg = { | |
5231 | .rpc_proc = | |
5232 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
5233 | .rpc_argp = clp, | |
5234 | .rpc_resp = &res, | |
2cf047c9 | 5235 | .rpc_cred = cred, |
7c44f1ae WAA |
5236 | }; |
5237 | ||
5238 | dprintk("--> %s\n", __func__); | |
7c44f1ae WAA |
5239 | |
5240 | res.session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); | |
5241 | if (unlikely(res.session == NULL)) { | |
5242 | status = -ENOMEM; | |
5243 | goto out; | |
5244 | } | |
5245 | ||
5246 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5247 | if (status == 0) { | |
5248 | if (memcmp(res.session->sess_id.data, | |
5249 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { | |
5250 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
5251 | status = -EIO; | |
5252 | goto out_session; | |
5253 | } | |
5254 | if (res.dir != NFS4_CDFS4_BOTH) { | |
5255 | dprintk("NFS: %s: Unexpected direction from server\n", | |
5256 | __func__); | |
5257 | status = -EIO; | |
5258 | goto out_session; | |
5259 | } | |
5260 | if (res.use_conn_in_rdma_mode) { | |
5261 | dprintk("NFS: %s: Server returned RDMA mode = true\n", | |
5262 | __func__); | |
5263 | status = -EIO; | |
5264 | goto out_session; | |
5265 | } | |
5266 | } | |
5267 | out_session: | |
5268 | kfree(res.session); | |
5269 | out: | |
5270 | dprintk("<-- %s status= %d\n", __func__, status); | |
5271 | return status; | |
5272 | } | |
5273 | ||
99fe60d0 BH |
5274 | /* |
5275 | * nfs4_proc_exchange_id() | |
5276 | * | |
6bbb4ae8 CL |
5277 | * Returns zero, a negative errno, or a negative NFS4ERR status code. |
5278 | * | |
99fe60d0 BH |
5279 | * Since the clientid has expired, all compounds using sessions |
5280 | * associated with the stale clientid will be returning | |
5281 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
5282 | * be in some phase of session reset. | |
5283 | */ | |
4d643d1d | 5284 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
5285 | { |
5286 | nfs4_verifier verifier; | |
5287 | struct nfs41_exchange_id_args args = { | |
cd93710e | 5288 | .verifier = &verifier, |
99fe60d0 | 5289 | .client = clp, |
357f54d6 | 5290 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, |
99fe60d0 BH |
5291 | }; |
5292 | struct nfs41_exchange_id_res res = { | |
32b01310 | 5293 | 0 |
99fe60d0 BH |
5294 | }; |
5295 | int status; | |
5296 | struct rpc_message msg = { | |
5297 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
5298 | .rpc_argp = &args, | |
5299 | .rpc_resp = &res, | |
5300 | .rpc_cred = cred, | |
5301 | }; | |
99fe60d0 | 5302 | |
f092075d | 5303 | nfs4_init_boot_verifier(clp, &verifier); |
e984a55a CL |
5304 | args.id_len = nfs4_init_uniform_client_string(clp, args.id, |
5305 | sizeof(args.id)); | |
6bbb4ae8 CL |
5306 | dprintk("NFS call exchange_id auth=%s, '%.*s'\n", |
5307 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
5308 | args.id_len, args.id); | |
99fe60d0 | 5309 | |
acdeb69d | 5310 | res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
bbafffd2 | 5311 | GFP_NOFS); |
acdeb69d | 5312 | if (unlikely(res.server_owner == NULL)) { |
abe9a6d5 WAA |
5313 | status = -ENOMEM; |
5314 | goto out; | |
5315 | } | |
78fe0f41 | 5316 | |
79d4e1f0 | 5317 | res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 5318 | GFP_NOFS); |
177313f1 | 5319 | if (unlikely(res.server_scope == NULL)) { |
abe9a6d5 | 5320 | status = -ENOMEM; |
acdeb69d | 5321 | goto out_server_owner; |
abe9a6d5 | 5322 | } |
78fe0f41 | 5323 | |
bbafffd2 | 5324 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
177313f1 | 5325 | if (unlikely(res.impl_id == NULL)) { |
7d2ed9ac WAA |
5326 | status = -ENOMEM; |
5327 | goto out_server_scope; | |
5328 | } | |
5329 | ||
1bd714f2 | 5330 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
177313f1 | 5331 | if (status == 0) |
32b01310 | 5332 | status = nfs4_check_cl_exchange_flags(res.flags); |
78fe0f41 | 5333 | |
acdeb69d | 5334 | if (status == 0) { |
32b01310 TM |
5335 | clp->cl_clientid = res.clientid; |
5336 | clp->cl_exchange_flags = (res.flags & ~EXCHGID4_FLAG_CONFIRMED_R); | |
5337 | if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R)) | |
5338 | clp->cl_seqid = res.seqid; | |
5339 | ||
acdeb69d CL |
5340 | kfree(clp->cl_serverowner); |
5341 | clp->cl_serverowner = res.server_owner; | |
5342 | res.server_owner = NULL; | |
78fe0f41 | 5343 | |
7d2ed9ac | 5344 | /* use the most recent implementation id */ |
59155546 CL |
5345 | kfree(clp->cl_implid); |
5346 | clp->cl_implid = res.impl_id; | |
7d2ed9ac | 5347 | |
177313f1 | 5348 | if (clp->cl_serverscope != NULL && |
79d4e1f0 | 5349 | !nfs41_same_server_scope(clp->cl_serverscope, |
78fe0f41 WAA |
5350 | res.server_scope)) { |
5351 | dprintk("%s: server_scope mismatch detected\n", | |
5352 | __func__); | |
5353 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
79d4e1f0 CL |
5354 | kfree(clp->cl_serverscope); |
5355 | clp->cl_serverscope = NULL; | |
78fe0f41 WAA |
5356 | } |
5357 | ||
177313f1 | 5358 | if (clp->cl_serverscope == NULL) { |
79d4e1f0 | 5359 | clp->cl_serverscope = res.server_scope; |
abe9a6d5 WAA |
5360 | goto out; |
5361 | } | |
32b01310 TM |
5362 | } else |
5363 | kfree(res.impl_id); | |
7d2ed9ac | 5364 | |
acdeb69d CL |
5365 | out_server_owner: |
5366 | kfree(res.server_owner); | |
7d2ed9ac | 5367 | out_server_scope: |
abe9a6d5 WAA |
5368 | kfree(res.server_scope); |
5369 | out: | |
177313f1 | 5370 | if (clp->cl_implid != NULL) |
6bbb4ae8 | 5371 | dprintk("NFS reply exchange_id: Server Implementation ID: " |
7d2ed9ac | 5372 | "domain: %s, name: %s, date: %llu,%u\n", |
6bbb4ae8 | 5373 | clp->cl_implid->domain, clp->cl_implid->name, |
59155546 CL |
5374 | clp->cl_implid->date.seconds, |
5375 | clp->cl_implid->date.nseconds); | |
6bbb4ae8 | 5376 | dprintk("NFS reply exchange_id: %d\n", status); |
99fe60d0 BH |
5377 | return status; |
5378 | } | |
5379 | ||
66245539 TM |
5380 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
5381 | struct rpc_cred *cred) | |
5382 | { | |
5383 | struct rpc_message msg = { | |
5384 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
5385 | .rpc_argp = clp, | |
5386 | .rpc_cred = cred, | |
5387 | }; | |
5388 | int status; | |
5389 | ||
5390 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5391 | if (status) | |
02c67525 | 5392 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
5393 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
5394 | return status; | |
5395 | } | |
5396 | ||
5397 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
5398 | struct rpc_cred *cred) | |
5399 | { | |
5400 | unsigned int loop; | |
5401 | int ret; | |
5402 | ||
5403 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
5404 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
5405 | switch (ret) { | |
5406 | case -NFS4ERR_DELAY: | |
5407 | case -NFS4ERR_CLIENTID_BUSY: | |
5408 | ssleep(1); | |
5409 | break; | |
5410 | default: | |
5411 | return ret; | |
5412 | } | |
5413 | } | |
5414 | return 0; | |
5415 | } | |
5416 | ||
5417 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
5418 | { | |
5419 | struct rpc_cred *cred; | |
5420 | int ret = 0; | |
5421 | ||
5422 | if (clp->cl_mvops->minor_version < 1) | |
5423 | goto out; | |
5424 | if (clp->cl_exchange_flags == 0) | |
5425 | goto out; | |
05f4c350 CL |
5426 | if (clp->cl_preserve_clid) |
5427 | goto out; | |
66245539 TM |
5428 | cred = nfs4_get_exchange_id_cred(clp); |
5429 | ret = nfs4_proc_destroy_clientid(clp, cred); | |
5430 | if (cred) | |
5431 | put_rpccred(cred); | |
5432 | switch (ret) { | |
5433 | case 0: | |
5434 | case -NFS4ERR_STALE_CLIENTID: | |
5435 | clp->cl_exchange_flags = 0; | |
5436 | } | |
5437 | out: | |
5438 | return ret; | |
5439 | } | |
5440 | ||
2050f0cc AA |
5441 | struct nfs4_get_lease_time_data { |
5442 | struct nfs4_get_lease_time_args *args; | |
5443 | struct nfs4_get_lease_time_res *res; | |
5444 | struct nfs_client *clp; | |
5445 | }; | |
5446 | ||
5447 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
5448 | void *calldata) | |
5449 | { | |
5450 | int ret; | |
5451 | struct nfs4_get_lease_time_data *data = | |
5452 | (struct nfs4_get_lease_time_data *)calldata; | |
5453 | ||
5454 | dprintk("--> %s\n", __func__); | |
689cf5c1 | 5455 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
2050f0cc AA |
5456 | /* just setup sequence, do not trigger session recovery |
5457 | since we're invoked within one */ | |
5458 | ret = nfs41_setup_sequence(data->clp->cl_session, | |
689cf5c1 | 5459 | &data->args->la_seq_args, |
9d12b216 | 5460 | &data->res->lr_seq_res, task); |
2050f0cc | 5461 | |
d3edcf96 TM |
5462 | if (ret != -EAGAIN) |
5463 | rpc_call_start(task); | |
2050f0cc AA |
5464 | dprintk("<-- %s\n", __func__); |
5465 | } | |
5466 | ||
5467 | /* | |
5468 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
5469 | * from sequence operation or clientid errors. | |
5470 | */ | |
5471 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
5472 | { | |
5473 | struct nfs4_get_lease_time_data *data = | |
5474 | (struct nfs4_get_lease_time_data *)calldata; | |
5475 | ||
5476 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5477 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
5478 | return; | |
2050f0cc AA |
5479 | switch (task->tk_status) { |
5480 | case -NFS4ERR_DELAY: | |
5481 | case -NFS4ERR_GRACE: | |
5482 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
5483 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
5484 | task->tk_status = 0; | |
a8a4ae3a AA |
5485 | /* fall through */ |
5486 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 5487 | rpc_restart_call_prepare(task); |
2050f0cc AA |
5488 | return; |
5489 | } | |
2050f0cc AA |
5490 | dprintk("<-- %s\n", __func__); |
5491 | } | |
5492 | ||
17280175 | 5493 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
5494 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
5495 | .rpc_call_done = nfs4_get_lease_time_done, | |
5496 | }; | |
5497 | ||
5498 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
5499 | { | |
5500 | struct rpc_task *task; | |
5501 | struct nfs4_get_lease_time_args args; | |
5502 | struct nfs4_get_lease_time_res res = { | |
5503 | .lr_fsinfo = fsinfo, | |
5504 | }; | |
5505 | struct nfs4_get_lease_time_data data = { | |
5506 | .args = &args, | |
5507 | .res = &res, | |
5508 | .clp = clp, | |
5509 | }; | |
5510 | struct rpc_message msg = { | |
5511 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
5512 | .rpc_argp = &args, | |
5513 | .rpc_resp = &res, | |
5514 | }; | |
5515 | struct rpc_task_setup task_setup = { | |
5516 | .rpc_client = clp->cl_rpcclient, | |
5517 | .rpc_message = &msg, | |
5518 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
5519 | .callback_data = &data, |
5520 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
5521 | }; |
5522 | int status; | |
5523 | ||
9d12b216 | 5524 | nfs41_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
2050f0cc AA |
5525 | dprintk("--> %s\n", __func__); |
5526 | task = rpc_run_task(&task_setup); | |
5527 | ||
5528 | if (IS_ERR(task)) | |
5529 | status = PTR_ERR(task); | |
5530 | else { | |
5531 | status = task->tk_status; | |
5532 | rpc_put_task(task); | |
5533 | } | |
5534 | dprintk("<-- %s return %d\n", __func__, status); | |
5535 | ||
5536 | return status; | |
5537 | } | |
5538 | ||
fc931582 AA |
5539 | /* |
5540 | * Initialize the values to be used by the client in CREATE_SESSION | |
5541 | * If nfs4_init_session set the fore channel request and response sizes, | |
5542 | * use them. | |
5543 | * | |
5544 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
5545 | * always set csa_cachethis to FALSE because the current implementation | |
5546 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
5547 | */ | |
5548 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
5549 | { | |
5550 | struct nfs4_session *session = args->client->cl_session; | |
ae72ae67 TM |
5551 | unsigned int mxrqst_sz = session->fc_target_max_rqst_sz, |
5552 | mxresp_sz = session->fc_target_max_resp_sz; | |
fc931582 AA |
5553 | |
5554 | if (mxrqst_sz == 0) | |
5555 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
5556 | if (mxresp_sz == 0) | |
5557 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
5558 | /* Fore channel attributes */ | |
fc931582 AA |
5559 | args->fc_attrs.max_rqst_sz = mxrqst_sz; |
5560 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 | 5561 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 5562 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
5563 | |
5564 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 5565 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
5566 | __func__, |
5567 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 5568 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
5569 | |
5570 | /* Back channel attributes */ | |
fc931582 AA |
5571 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
5572 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
5573 | args->bc_attrs.max_resp_sz_cached = 0; | |
5574 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
5575 | args->bc_attrs.max_reqs = 1; | |
5576 | ||
5577 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
5578 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
5579 | __func__, | |
5580 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
5581 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
5582 | args->bc_attrs.max_reqs); | |
5583 | } | |
5584 | ||
43c2e885 | 5585 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 5586 | { |
43c2e885 BF |
5587 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
5588 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
5589 | ||
43c2e885 BF |
5590 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
5591 | return -EINVAL; | |
5592 | /* | |
5593 | * Our requested max_ops is the minimum we need; we're not | |
5594 | * prepared to break up compounds into smaller pieces than that. | |
5595 | * So, no point even trying to continue if the server won't | |
5596 | * cooperate: | |
5597 | */ | |
5598 | if (rcvd->max_ops < sent->max_ops) | |
5599 | return -EINVAL; | |
5600 | if (rcvd->max_reqs == 0) | |
5601 | return -EINVAL; | |
b4b9a0c1 VG |
5602 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
5603 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 5604 | return 0; |
8d35301d AA |
5605 | } |
5606 | ||
43c2e885 BF |
5607 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
5608 | { | |
5609 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
5610 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 5611 | |
43c2e885 BF |
5612 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
5613 | return -EINVAL; | |
5614 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
5615 | return -EINVAL; | |
5616 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
5617 | return -EINVAL; | |
5618 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 5619 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 5620 | return -EINVAL; |
b4b9a0c1 | 5621 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 BF |
5622 | return -EINVAL; |
5623 | return 0; | |
5624 | } | |
8d35301d | 5625 | |
8d35301d AA |
5626 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
5627 | struct nfs4_session *session) | |
5628 | { | |
43c2e885 | 5629 | int ret; |
8d35301d | 5630 | |
43c2e885 BF |
5631 | ret = nfs4_verify_fore_channel_attrs(args, session); |
5632 | if (ret) | |
5633 | return ret; | |
5634 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
5635 | } |
5636 | ||
848f5bda TM |
5637 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
5638 | struct rpc_cred *cred) | |
fc931582 AA |
5639 | { |
5640 | struct nfs4_session *session = clp->cl_session; | |
5641 | struct nfs41_create_session_args args = { | |
5642 | .client = clp, | |
5643 | .cb_program = NFS4_CALLBACK, | |
5644 | }; | |
5645 | struct nfs41_create_session_res res = { | |
5646 | .client = clp, | |
5647 | }; | |
5648 | struct rpc_message msg = { | |
5649 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
5650 | .rpc_argp = &args, | |
5651 | .rpc_resp = &res, | |
848f5bda | 5652 | .rpc_cred = cred, |
fc931582 AA |
5653 | }; |
5654 | int status; | |
5655 | ||
5656 | nfs4_init_channel_attrs(&args); | |
0f91421e | 5657 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 5658 | |
1bd714f2 | 5659 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
fc931582 | 5660 | |
43095d39 | 5661 | if (!status) { |
8d35301d AA |
5662 | /* Verify the session's negotiated channel_attrs values */ |
5663 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
5664 | /* Increment the clientid slot sequence id */ |
5665 | clp->cl_seqid++; | |
5666 | } | |
5667 | ||
5668 | return status; | |
5669 | } | |
5670 | ||
5671 | /* | |
5672 | * Issues a CREATE_SESSION operation to the server. | |
5673 | * It is the responsibility of the caller to verify the session is | |
5674 | * expired before calling this routine. | |
5675 | */ | |
848f5bda | 5676 | int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred) |
fc931582 AA |
5677 | { |
5678 | int status; | |
5679 | unsigned *ptr; | |
fc931582 AA |
5680 | struct nfs4_session *session = clp->cl_session; |
5681 | ||
5682 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
5683 | ||
848f5bda | 5684 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
5685 | if (status) |
5686 | goto out; | |
5687 | ||
aacd5537 AA |
5688 | /* Init or reset the session slot tables */ |
5689 | status = nfs4_setup_session_slot_tables(session); | |
5690 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
5691 | if (status) |
5692 | goto out; | |
5693 | ||
5694 | ptr = (unsigned *)&session->sess_id.data[0]; | |
5695 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
5696 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
5697 | out: |
5698 | dprintk("<-- %s\n", __func__); | |
5699 | return status; | |
5700 | } | |
5701 | ||
0f3e66c6 AA |
5702 | /* |
5703 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
5704 | * The caller must serialize access to this routine. | |
5705 | */ | |
848f5bda TM |
5706 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
5707 | struct rpc_cred *cred) | |
0f3e66c6 | 5708 | { |
848f5bda TM |
5709 | struct rpc_message msg = { |
5710 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
5711 | .rpc_argp = session, | |
5712 | .rpc_cred = cred, | |
5713 | }; | |
0f3e66c6 | 5714 | int status = 0; |
0f3e66c6 AA |
5715 | |
5716 | dprintk("--> nfs4_proc_destroy_session\n"); | |
5717 | ||
5718 | /* session is still being setup */ | |
5719 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
5720 | return status; | |
5721 | ||
1bd714f2 | 5722 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
0f3e66c6 AA |
5723 | |
5724 | if (status) | |
08106ac7 | 5725 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
5726 | "Session has been destroyed regardless...\n", status); |
5727 | ||
5728 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
5729 | return status; | |
5730 | } | |
5731 | ||
fc01cea9 AA |
5732 | /* |
5733 | * Renew the cl_session lease. | |
5734 | */ | |
d5f8d3fe TM |
5735 | struct nfs4_sequence_data { |
5736 | struct nfs_client *clp; | |
5737 | struct nfs4_sequence_args args; | |
5738 | struct nfs4_sequence_res res; | |
5739 | }; | |
5740 | ||
dc96aef9 AB |
5741 | static void nfs41_sequence_release(void *data) |
5742 | { | |
d5f8d3fe TM |
5743 | struct nfs4_sequence_data *calldata = data; |
5744 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 5745 | |
7135840f AB |
5746 | if (atomic_read(&clp->cl_count) > 1) |
5747 | nfs4_schedule_state_renewal(clp); | |
5748 | nfs_put_client(clp); | |
d5f8d3fe | 5749 | kfree(calldata); |
dc96aef9 AB |
5750 | } |
5751 | ||
aa5190d0 TM |
5752 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5753 | { | |
5754 | switch(task->tk_status) { | |
5755 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5756 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5757 | return -EAGAIN; | |
5758 | default: | |
0400a6b0 | 5759 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5760 | } |
5761 | return 0; | |
5762 | } | |
5763 | ||
dc96aef9 | 5764 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 5765 | { |
d5f8d3fe TM |
5766 | struct nfs4_sequence_data *calldata = data; |
5767 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 5768 | |
14516c3a TM |
5769 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
5770 | return; | |
fc01cea9 AA |
5771 | |
5772 | if (task->tk_status < 0) { | |
5773 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
5774 | if (atomic_read(&clp->cl_count) == 1) |
5775 | goto out; | |
fc01cea9 | 5776 | |
aa5190d0 TM |
5777 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
5778 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
5779 | return; |
5780 | } | |
5781 | } | |
fc01cea9 | 5782 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 5783 | out: |
fc01cea9 AA |
5784 | dprintk("<-- %s\n", __func__); |
5785 | } | |
5786 | ||
5787 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
5788 | { | |
d5f8d3fe TM |
5789 | struct nfs4_sequence_data *calldata = data; |
5790 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
5791 | struct nfs4_sequence_args *args; |
5792 | struct nfs4_sequence_res *res; | |
5793 | ||
fc01cea9 AA |
5794 | args = task->tk_msg.rpc_argp; |
5795 | res = task->tk_msg.rpc_resp; | |
5796 | ||
9d12b216 | 5797 | if (nfs41_setup_sequence(clp->cl_session, args, res, task)) |
fc01cea9 AA |
5798 | return; |
5799 | rpc_call_start(task); | |
5800 | } | |
5801 | ||
6bdb5f21 BS |
5802 | static void nfs41_sequence_prepare_privileged(struct rpc_task *task, void *data) |
5803 | { | |
5804 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
5805 | nfs41_sequence_prepare(task, data); | |
5806 | } | |
5807 | ||
fc01cea9 AA |
5808 | static const struct rpc_call_ops nfs41_sequence_ops = { |
5809 | .rpc_call_done = nfs41_sequence_call_done, | |
5810 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 5811 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
5812 | }; |
5813 | ||
6bdb5f21 BS |
5814 | static const struct rpc_call_ops nfs41_sequence_privileged_ops = { |
5815 | .rpc_call_done = nfs41_sequence_call_done, | |
5816 | .rpc_call_prepare = nfs41_sequence_prepare_privileged, | |
5817 | .rpc_release = nfs41_sequence_release, | |
5818 | }; | |
5819 | ||
5820 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred, | |
5821 | const struct rpc_call_ops *seq_ops) | |
fc01cea9 | 5822 | { |
d5f8d3fe | 5823 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
5824 | struct rpc_message msg = { |
5825 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
5826 | .rpc_cred = cred, | |
5827 | }; | |
71ac6da9 TM |
5828 | struct rpc_task_setup task_setup_data = { |
5829 | .rpc_client = clp->cl_rpcclient, | |
5830 | .rpc_message = &msg, | |
6bdb5f21 | 5831 | .callback_ops = seq_ops, |
71ac6da9 TM |
5832 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT, |
5833 | }; | |
fc01cea9 | 5834 | |
7135840f | 5835 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 5836 | return ERR_PTR(-EIO); |
dfb4f309 | 5837 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 5838 | if (calldata == NULL) { |
7135840f | 5839 | nfs_put_client(clp); |
71ac6da9 | 5840 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 5841 | } |
9d12b216 | 5842 | nfs41_init_sequence(&calldata->args, &calldata->res, 0); |
d5f8d3fe TM |
5843 | msg.rpc_argp = &calldata->args; |
5844 | msg.rpc_resp = &calldata->res; | |
5845 | calldata->clp = clp; | |
71ac6da9 | 5846 | task_setup_data.callback_data = calldata; |
fc01cea9 | 5847 | |
71ac6da9 TM |
5848 | return rpc_run_task(&task_setup_data); |
5849 | } | |
5850 | ||
2f60ea6b | 5851 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
5852 | { |
5853 | struct rpc_task *task; | |
5854 | int ret = 0; | |
5855 | ||
2f60ea6b TM |
5856 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
5857 | return 0; | |
6bdb5f21 | 5858 | task = _nfs41_proc_sequence(clp, cred, &nfs41_sequence_ops); |
71ac6da9 TM |
5859 | if (IS_ERR(task)) |
5860 | ret = PTR_ERR(task); | |
5861 | else | |
bf294b41 | 5862 | rpc_put_task_async(task); |
71ac6da9 TM |
5863 | dprintk("<-- %s status=%d\n", __func__, ret); |
5864 | return ret; | |
5865 | } | |
5866 | ||
5867 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5868 | { | |
5869 | struct rpc_task *task; | |
5870 | int ret; | |
5871 | ||
6bdb5f21 | 5872 | task = _nfs41_proc_sequence(clp, cred, &nfs41_sequence_privileged_ops); |
71ac6da9 TM |
5873 | if (IS_ERR(task)) { |
5874 | ret = PTR_ERR(task); | |
5875 | goto out; | |
5876 | } | |
5877 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
5878 | if (!ret) { |
5879 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
5880 | ||
5881 | if (task->tk_status == 0) | |
5882 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 5883 | ret = task->tk_status; |
b4410c2f | 5884 | } |
71ac6da9 TM |
5885 | rpc_put_task(task); |
5886 | out: | |
5887 | dprintk("<-- %s status=%d\n", __func__, ret); | |
5888 | return ret; | |
fc01cea9 AA |
5889 | } |
5890 | ||
fce5c838 RL |
5891 | struct nfs4_reclaim_complete_data { |
5892 | struct nfs_client *clp; | |
5893 | struct nfs41_reclaim_complete_args arg; | |
5894 | struct nfs41_reclaim_complete_res res; | |
5895 | }; | |
5896 | ||
5897 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
5898 | { | |
5899 | struct nfs4_reclaim_complete_data *calldata = data; | |
5900 | ||
b257957e | 5901 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
035168ab TM |
5902 | if (nfs41_setup_sequence(calldata->clp->cl_session, |
5903 | &calldata->arg.seq_args, | |
9d12b216 | 5904 | &calldata->res.seq_res, task)) |
fce5c838 RL |
5905 | return; |
5906 | ||
5907 | rpc_call_start(task); | |
5908 | } | |
5909 | ||
aa5190d0 TM |
5910 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5911 | { | |
5912 | switch(task->tk_status) { | |
5913 | case 0: | |
5914 | case -NFS4ERR_COMPLETE_ALREADY: | |
5915 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
5916 | break; | |
5917 | case -NFS4ERR_DELAY: | |
aa5190d0 | 5918 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
5919 | /* fall through */ |
5920 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
5921 | return -EAGAIN; |
5922 | default: | |
0400a6b0 | 5923 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5924 | } |
5925 | return 0; | |
5926 | } | |
5927 | ||
fce5c838 RL |
5928 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
5929 | { | |
5930 | struct nfs4_reclaim_complete_data *calldata = data; | |
5931 | struct nfs_client *clp = calldata->clp; | |
5932 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
5933 | ||
5934 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5935 | if (!nfs41_sequence_done(task, res)) |
5936 | return; | |
fce5c838 | 5937 | |
aa5190d0 TM |
5938 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
5939 | rpc_restart_call_prepare(task); | |
5940 | return; | |
5941 | } | |
fce5c838 RL |
5942 | dprintk("<-- %s\n", __func__); |
5943 | } | |
5944 | ||
5945 | static void nfs4_free_reclaim_complete_data(void *data) | |
5946 | { | |
5947 | struct nfs4_reclaim_complete_data *calldata = data; | |
5948 | ||
5949 | kfree(calldata); | |
5950 | } | |
5951 | ||
5952 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
5953 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
5954 | .rpc_call_done = nfs4_reclaim_complete_done, | |
5955 | .rpc_release = nfs4_free_reclaim_complete_data, | |
5956 | }; | |
5957 | ||
5958 | /* | |
5959 | * Issue a global reclaim complete. | |
5960 | */ | |
5961 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
5962 | { | |
5963 | struct nfs4_reclaim_complete_data *calldata; | |
5964 | struct rpc_task *task; | |
5965 | struct rpc_message msg = { | |
5966 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
5967 | }; | |
5968 | struct rpc_task_setup task_setup_data = { | |
5969 | .rpc_client = clp->cl_rpcclient, | |
5970 | .rpc_message = &msg, | |
5971 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
5972 | .flags = RPC_TASK_ASYNC, | |
5973 | }; | |
5974 | int status = -ENOMEM; | |
5975 | ||
5976 | dprintk("--> %s\n", __func__); | |
8535b2be | 5977 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
5978 | if (calldata == NULL) |
5979 | goto out; | |
5980 | calldata->clp = clp; | |
5981 | calldata->arg.one_fs = 0; | |
fce5c838 | 5982 | |
9d12b216 | 5983 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
fce5c838 RL |
5984 | msg.rpc_argp = &calldata->arg; |
5985 | msg.rpc_resp = &calldata->res; | |
5986 | task_setup_data.callback_data = calldata; | |
5987 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 5988 | if (IS_ERR(task)) { |
fce5c838 | 5989 | status = PTR_ERR(task); |
acf82b85 DC |
5990 | goto out; |
5991 | } | |
c34c32ea AA |
5992 | status = nfs4_wait_for_completion_rpc_task(task); |
5993 | if (status == 0) | |
5994 | status = task->tk_status; | |
fce5c838 | 5995 | rpc_put_task(task); |
acf82b85 | 5996 | return 0; |
fce5c838 RL |
5997 | out: |
5998 | dprintk("<-- %s status=%d\n", __func__, status); | |
5999 | return status; | |
6000 | } | |
b1f69b75 AA |
6001 | |
6002 | static void | |
6003 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
6004 | { | |
6005 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 6006 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
b1f69b75 AA |
6007 | |
6008 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
6009 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
6010 | * right now covering the LAYOUTGET we are about to send. | |
6011 | * However, that is not so catastrophic, and there seems | |
6012 | * to be no way to prevent it completely. | |
6013 | */ | |
b1f69b75 | 6014 | if (nfs4_setup_sequence(server, &lgp->args.seq_args, |
9d12b216 | 6015 | &lgp->res.seq_res, task)) |
b1f69b75 | 6016 | return; |
cf7d63f1 FI |
6017 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
6018 | NFS_I(lgp->args.inode)->layout, | |
6019 | lgp->args.ctx->state)) { | |
6020 | rpc_exit(task, NFS4_OK); | |
6021 | return; | |
6022 | } | |
b1f69b75 AA |
6023 | rpc_call_start(task); |
6024 | } | |
6025 | ||
6026 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
6027 | { | |
6028 | struct nfs4_layoutget *lgp = calldata; | |
ee314c2a TM |
6029 | struct inode *inode = lgp->args.inode; |
6030 | struct nfs_server *server = NFS_SERVER(inode); | |
6031 | struct pnfs_layout_hdr *lo; | |
6032 | struct nfs4_state *state = NULL; | |
b1f69b75 AA |
6033 | |
6034 | dprintk("--> %s\n", __func__); | |
6035 | ||
6036 | if (!nfs4_sequence_done(task, &lgp->res.seq_res)) | |
ee314c2a | 6037 | goto out; |
b1f69b75 AA |
6038 | |
6039 | switch (task->tk_status) { | |
6040 | case 0: | |
ee314c2a | 6041 | goto out; |
b1f69b75 AA |
6042 | case -NFS4ERR_LAYOUTTRYLATER: |
6043 | case -NFS4ERR_RECALLCONFLICT: | |
6044 | task->tk_status = -NFS4ERR_DELAY; | |
ee314c2a TM |
6045 | break; |
6046 | case -NFS4ERR_EXPIRED: | |
6047 | case -NFS4ERR_BAD_STATEID: | |
6048 | spin_lock(&inode->i_lock); | |
6049 | lo = NFS_I(inode)->layout; | |
6050 | if (!lo || list_empty(&lo->plh_segs)) { | |
6051 | spin_unlock(&inode->i_lock); | |
6052 | /* If the open stateid was bad, then recover it. */ | |
6053 | state = lgp->args.ctx->state; | |
6054 | } else { | |
6055 | LIST_HEAD(head); | |
6056 | ||
6057 | pnfs_mark_matching_lsegs_invalid(lo, &head, NULL); | |
6058 | spin_unlock(&inode->i_lock); | |
6059 | /* Mark the bad layout state as invalid, then | |
6060 | * retry using the open stateid. */ | |
6061 | pnfs_free_lseg_list(&head); | |
b1f69b75 AA |
6062 | } |
6063 | } | |
ee314c2a TM |
6064 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
6065 | rpc_restart_call_prepare(task); | |
6066 | out: | |
b1f69b75 AA |
6067 | dprintk("<-- %s\n", __func__); |
6068 | } | |
6069 | ||
8554116e IK |
6070 | static size_t max_response_pages(struct nfs_server *server) |
6071 | { | |
6072 | u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; | |
6073 | return nfs_page_array_len(0, max_resp_sz); | |
6074 | } | |
6075 | ||
6076 | static void nfs4_free_pages(struct page **pages, size_t size) | |
6077 | { | |
6078 | int i; | |
6079 | ||
6080 | if (!pages) | |
6081 | return; | |
6082 | ||
6083 | for (i = 0; i < size; i++) { | |
6084 | if (!pages[i]) | |
6085 | break; | |
6086 | __free_page(pages[i]); | |
6087 | } | |
6088 | kfree(pages); | |
6089 | } | |
6090 | ||
6091 | static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags) | |
6092 | { | |
6093 | struct page **pages; | |
6094 | int i; | |
6095 | ||
6096 | pages = kcalloc(size, sizeof(struct page *), gfp_flags); | |
6097 | if (!pages) { | |
6098 | dprintk("%s: can't alloc array of %zu pages\n", __func__, size); | |
6099 | return NULL; | |
6100 | } | |
6101 | ||
6102 | for (i = 0; i < size; i++) { | |
6103 | pages[i] = alloc_page(gfp_flags); | |
6104 | if (!pages[i]) { | |
6105 | dprintk("%s: failed to allocate page\n", __func__); | |
6106 | nfs4_free_pages(pages, size); | |
6107 | return NULL; | |
6108 | } | |
6109 | } | |
6110 | ||
6111 | return pages; | |
6112 | } | |
6113 | ||
b1f69b75 AA |
6114 | static void nfs4_layoutget_release(void *calldata) |
6115 | { | |
6116 | struct nfs4_layoutget *lgp = calldata; | |
8554116e IK |
6117 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
6118 | size_t max_pages = max_response_pages(server); | |
b1f69b75 AA |
6119 | |
6120 | dprintk("--> %s\n", __func__); | |
8554116e | 6121 | nfs4_free_pages(lgp->args.layout.pages, max_pages); |
b1f69b75 AA |
6122 | put_nfs_open_context(lgp->args.ctx); |
6123 | kfree(calldata); | |
6124 | dprintk("<-- %s\n", __func__); | |
6125 | } | |
6126 | ||
6127 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
6128 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
6129 | .rpc_call_done = nfs4_layoutget_done, | |
6130 | .rpc_release = nfs4_layoutget_release, | |
6131 | }; | |
6132 | ||
a0b0a6e3 TM |
6133 | struct pnfs_layout_segment * |
6134 | nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags) | |
b1f69b75 AA |
6135 | { |
6136 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
8554116e | 6137 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
6138 | struct rpc_task *task; |
6139 | struct rpc_message msg = { | |
6140 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
6141 | .rpc_argp = &lgp->args, | |
6142 | .rpc_resp = &lgp->res, | |
6143 | }; | |
6144 | struct rpc_task_setup task_setup_data = { | |
6145 | .rpc_client = server->client, | |
6146 | .rpc_message = &msg, | |
6147 | .callback_ops = &nfs4_layoutget_call_ops, | |
6148 | .callback_data = lgp, | |
6149 | .flags = RPC_TASK_ASYNC, | |
6150 | }; | |
a0b0a6e3 | 6151 | struct pnfs_layout_segment *lseg = NULL; |
b1f69b75 AA |
6152 | int status = 0; |
6153 | ||
6154 | dprintk("--> %s\n", __func__); | |
6155 | ||
8554116e IK |
6156 | lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags); |
6157 | if (!lgp->args.layout.pages) { | |
6158 | nfs4_layoutget_release(lgp); | |
a0b0a6e3 | 6159 | return ERR_PTR(-ENOMEM); |
8554116e IK |
6160 | } |
6161 | lgp->args.layout.pglen = max_pages * PAGE_SIZE; | |
6162 | ||
35124a09 | 6163 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 6164 | lgp->res.seq_res.sr_slot = NULL; |
9d12b216 | 6165 | nfs41_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
b1f69b75 AA |
6166 | task = rpc_run_task(&task_setup_data); |
6167 | if (IS_ERR(task)) | |
a0b0a6e3 | 6168 | return ERR_CAST(task); |
b1f69b75 | 6169 | status = nfs4_wait_for_completion_rpc_task(task); |
c31663d4 FI |
6170 | if (status == 0) |
6171 | status = task->tk_status; | |
6172 | if (status == 0) | |
a0b0a6e3 | 6173 | lseg = pnfs_layout_process(lgp); |
b1f69b75 AA |
6174 | rpc_put_task(task); |
6175 | dprintk("<-- %s status=%d\n", __func__, status); | |
a0b0a6e3 TM |
6176 | if (status) |
6177 | return ERR_PTR(status); | |
6178 | return lseg; | |
b1f69b75 AA |
6179 | } |
6180 | ||
cbe82603 BH |
6181 | static void |
6182 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
6183 | { | |
6184 | struct nfs4_layoutreturn *lrp = calldata; | |
6185 | ||
6186 | dprintk("--> %s\n", __func__); | |
6187 | if (nfs41_setup_sequence(lrp->clp->cl_session, &lrp->args.seq_args, | |
9d12b216 | 6188 | &lrp->res.seq_res, task)) |
cbe82603 BH |
6189 | return; |
6190 | rpc_call_start(task); | |
6191 | } | |
6192 | ||
6193 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
6194 | { | |
6195 | struct nfs4_layoutreturn *lrp = calldata; | |
6196 | struct nfs_server *server; | |
6197 | ||
6198 | dprintk("--> %s\n", __func__); | |
6199 | ||
6200 | if (!nfs4_sequence_done(task, &lrp->res.seq_res)) | |
6201 | return; | |
6202 | ||
6203 | server = NFS_SERVER(lrp->args.inode); | |
6204 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 6205 | rpc_restart_call_prepare(task); |
cbe82603 BH |
6206 | return; |
6207 | } | |
cbe82603 BH |
6208 | dprintk("<-- %s\n", __func__); |
6209 | } | |
6210 | ||
6211 | static void nfs4_layoutreturn_release(void *calldata) | |
6212 | { | |
6213 | struct nfs4_layoutreturn *lrp = calldata; | |
849b286f | 6214 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
6215 | |
6216 | dprintk("--> %s\n", __func__); | |
849b286f TM |
6217 | spin_lock(&lo->plh_inode->i_lock); |
6218 | if (lrp->res.lrs_present) | |
6219 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); | |
6220 | lo->plh_block_lgets--; | |
6221 | spin_unlock(&lo->plh_inode->i_lock); | |
70c3bd2b | 6222 | pnfs_put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
6223 | kfree(calldata); |
6224 | dprintk("<-- %s\n", __func__); | |
6225 | } | |
6226 | ||
6227 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
6228 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
6229 | .rpc_call_done = nfs4_layoutreturn_done, | |
6230 | .rpc_release = nfs4_layoutreturn_release, | |
6231 | }; | |
6232 | ||
6233 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
6234 | { | |
6235 | struct rpc_task *task; | |
6236 | struct rpc_message msg = { | |
6237 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
6238 | .rpc_argp = &lrp->args, | |
6239 | .rpc_resp = &lrp->res, | |
6240 | }; | |
6241 | struct rpc_task_setup task_setup_data = { | |
6242 | .rpc_client = lrp->clp->cl_rpcclient, | |
6243 | .rpc_message = &msg, | |
6244 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
6245 | .callback_data = lrp, | |
6246 | }; | |
6247 | int status; | |
6248 | ||
6249 | dprintk("--> %s\n", __func__); | |
9d12b216 | 6250 | nfs41_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
6251 | task = rpc_run_task(&task_setup_data); |
6252 | if (IS_ERR(task)) | |
6253 | return PTR_ERR(task); | |
6254 | status = task->tk_status; | |
6255 | dprintk("<-- %s status=%d\n", __func__, status); | |
6256 | rpc_put_task(task); | |
6257 | return status; | |
6258 | } | |
6259 | ||
7f11d8d3 AA |
6260 | /* |
6261 | * Retrieve the list of Data Server devices from the MDS. | |
6262 | */ | |
6263 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
6264 | const struct nfs_fh *fh, | |
6265 | struct pnfs_devicelist *devlist) | |
6266 | { | |
6267 | struct nfs4_getdevicelist_args args = { | |
6268 | .fh = fh, | |
6269 | .layoutclass = server->pnfs_curr_ld->id, | |
6270 | }; | |
6271 | struct nfs4_getdevicelist_res res = { | |
6272 | .devlist = devlist, | |
6273 | }; | |
6274 | struct rpc_message msg = { | |
6275 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
6276 | .rpc_argp = &args, | |
6277 | .rpc_resp = &res, | |
6278 | }; | |
6279 | int status; | |
6280 | ||
6281 | dprintk("--> %s\n", __func__); | |
6282 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
6283 | &res.seq_res, 0); | |
6284 | dprintk("<-- %s status=%d\n", __func__, status); | |
6285 | return status; | |
6286 | } | |
6287 | ||
6288 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
6289 | const struct nfs_fh *fh, | |
6290 | struct pnfs_devicelist *devlist) | |
6291 | { | |
6292 | struct nfs4_exception exception = { }; | |
6293 | int err; | |
6294 | ||
6295 | do { | |
6296 | err = nfs4_handle_exception(server, | |
6297 | _nfs4_getdevicelist(server, fh, devlist), | |
6298 | &exception); | |
6299 | } while (exception.retry); | |
6300 | ||
6301 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
6302 | err, devlist->num_devs); | |
6303 | ||
6304 | return err; | |
6305 | } | |
6306 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
6307 | ||
b1f69b75 AA |
6308 | static int |
6309 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6310 | { | |
6311 | struct nfs4_getdeviceinfo_args args = { | |
6312 | .pdev = pdev, | |
6313 | }; | |
6314 | struct nfs4_getdeviceinfo_res res = { | |
6315 | .pdev = pdev, | |
6316 | }; | |
6317 | struct rpc_message msg = { | |
6318 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
6319 | .rpc_argp = &args, | |
6320 | .rpc_resp = &res, | |
6321 | }; | |
6322 | int status; | |
6323 | ||
6324 | dprintk("--> %s\n", __func__); | |
7c513058 | 6325 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
6326 | dprintk("<-- %s status=%d\n", __func__, status); |
6327 | ||
6328 | return status; | |
6329 | } | |
6330 | ||
6331 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6332 | { | |
6333 | struct nfs4_exception exception = { }; | |
6334 | int err; | |
6335 | ||
6336 | do { | |
6337 | err = nfs4_handle_exception(server, | |
6338 | _nfs4_proc_getdeviceinfo(server, pdev), | |
6339 | &exception); | |
6340 | } while (exception.retry); | |
6341 | return err; | |
6342 | } | |
6343 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
6344 | ||
863a3c6c AA |
6345 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
6346 | { | |
6347 | struct nfs4_layoutcommit_data *data = calldata; | |
6348 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6349 | ||
6350 | if (nfs4_setup_sequence(server, &data->args.seq_args, | |
9d12b216 | 6351 | &data->res.seq_res, task)) |
863a3c6c AA |
6352 | return; |
6353 | rpc_call_start(task); | |
6354 | } | |
6355 | ||
6356 | static void | |
6357 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
6358 | { | |
6359 | struct nfs4_layoutcommit_data *data = calldata; | |
6360 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6361 | ||
6362 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
6363 | return; | |
6364 | ||
6365 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
6366 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
6367 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
6368 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
6369 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 6370 | task->tk_status = 0; |
e59d27e0 TM |
6371 | break; |
6372 | case 0: | |
863a3c6c AA |
6373 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
6374 | data->res.fattr); | |
e59d27e0 TM |
6375 | break; |
6376 | default: | |
6377 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
6378 | rpc_restart_call_prepare(task); | |
6379 | return; | |
6380 | } | |
6381 | } | |
863a3c6c AA |
6382 | } |
6383 | ||
6384 | static void nfs4_layoutcommit_release(void *calldata) | |
6385 | { | |
6386 | struct nfs4_layoutcommit_data *data = calldata; | |
a9bae566 | 6387 | struct pnfs_layout_segment *lseg, *tmp; |
92407e75 | 6388 | unsigned long *bitlock = &NFS_I(data->args.inode)->flags; |
863a3c6c | 6389 | |
db29c089 | 6390 | pnfs_cleanup_layoutcommit(data); |
863a3c6c | 6391 | /* Matched by references in pnfs_set_layoutcommit */ |
a9bae566 PT |
6392 | list_for_each_entry_safe(lseg, tmp, &data->lseg_list, pls_lc_list) { |
6393 | list_del_init(&lseg->pls_lc_list); | |
6394 | if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT, | |
6395 | &lseg->pls_flags)) | |
9369a431 | 6396 | pnfs_put_lseg(lseg); |
a9bae566 | 6397 | } |
92407e75 PT |
6398 | |
6399 | clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING, bitlock); | |
6400 | smp_mb__after_clear_bit(); | |
6401 | wake_up_bit(bitlock, NFS_INO_LAYOUTCOMMITTING); | |
6402 | ||
863a3c6c AA |
6403 | put_rpccred(data->cred); |
6404 | kfree(data); | |
6405 | } | |
6406 | ||
6407 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
6408 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
6409 | .rpc_call_done = nfs4_layoutcommit_done, | |
6410 | .rpc_release = nfs4_layoutcommit_release, | |
6411 | }; | |
6412 | ||
6413 | int | |
ef311537 | 6414 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
6415 | { |
6416 | struct rpc_message msg = { | |
6417 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
6418 | .rpc_argp = &data->args, | |
6419 | .rpc_resp = &data->res, | |
6420 | .rpc_cred = data->cred, | |
6421 | }; | |
6422 | struct rpc_task_setup task_setup_data = { | |
6423 | .task = &data->task, | |
6424 | .rpc_client = NFS_CLIENT(data->args.inode), | |
6425 | .rpc_message = &msg, | |
6426 | .callback_ops = &nfs4_layoutcommit_ops, | |
6427 | .callback_data = data, | |
6428 | .flags = RPC_TASK_ASYNC, | |
6429 | }; | |
6430 | struct rpc_task *task; | |
6431 | int status = 0; | |
6432 | ||
6433 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
6434 | "lbw: %llu inode %lu\n", | |
6435 | data->task.tk_pid, sync, | |
6436 | data->args.lastbytewritten, | |
6437 | data->args.inode->i_ino); | |
6438 | ||
9d12b216 | 6439 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
6440 | task = rpc_run_task(&task_setup_data); |
6441 | if (IS_ERR(task)) | |
6442 | return PTR_ERR(task); | |
ef311537 | 6443 | if (sync == false) |
863a3c6c AA |
6444 | goto out; |
6445 | status = nfs4_wait_for_completion_rpc_task(task); | |
6446 | if (status != 0) | |
6447 | goto out; | |
6448 | status = task->tk_status; | |
6449 | out: | |
6450 | dprintk("%s: status %d\n", __func__, status); | |
6451 | rpc_put_task(task); | |
6452 | return status; | |
6453 | } | |
fca78d6d BS |
6454 | |
6455 | static int | |
6456 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6457 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6458 | { | |
6459 | struct nfs41_secinfo_no_name_args args = { | |
6460 | .style = SECINFO_STYLE_CURRENT_FH, | |
6461 | }; | |
6462 | struct nfs4_secinfo_res res = { | |
6463 | .flavors = flavors, | |
6464 | }; | |
6465 | struct rpc_message msg = { | |
6466 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
6467 | .rpc_argp = &args, | |
6468 | .rpc_resp = &res, | |
6469 | }; | |
6470 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); | |
6471 | } | |
6472 | ||
6473 | static int | |
6474 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6475 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6476 | { | |
6477 | struct nfs4_exception exception = { }; | |
6478 | int err; | |
6479 | do { | |
6480 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6481 | switch (err) { | |
6482 | case 0: | |
6483 | case -NFS4ERR_WRONGSEC: | |
6484 | case -NFS4ERR_NOTSUPP: | |
05e9cfb4 | 6485 | goto out; |
fca78d6d BS |
6486 | default: |
6487 | err = nfs4_handle_exception(server, err, &exception); | |
6488 | } | |
6489 | } while (exception.retry); | |
05e9cfb4 | 6490 | out: |
fca78d6d BS |
6491 | return err; |
6492 | } | |
6493 | ||
6494 | static int | |
6495 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
6496 | struct nfs_fsinfo *info) | |
6497 | { | |
6498 | int err; | |
6499 | struct page *page; | |
6500 | rpc_authflavor_t flavor; | |
6501 | struct nfs4_secinfo_flavors *flavors; | |
6502 | ||
6503 | page = alloc_page(GFP_KERNEL); | |
6504 | if (!page) { | |
6505 | err = -ENOMEM; | |
6506 | goto out; | |
6507 | } | |
6508 | ||
6509 | flavors = page_address(page); | |
6510 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6511 | ||
6512 | /* | |
6513 | * Fall back on "guess and check" method if | |
6514 | * the server doesn't support SECINFO_NO_NAME | |
6515 | */ | |
6516 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
6517 | err = nfs4_find_root_sec(server, fhandle, info); | |
6518 | goto out_freepage; | |
6519 | } | |
6520 | if (err) | |
6521 | goto out_freepage; | |
6522 | ||
6523 | flavor = nfs_find_best_sec(flavors); | |
6524 | if (err == 0) | |
6525 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
6526 | ||
6527 | out_freepage: | |
6528 | put_page(page); | |
6529 | if (err == -EACCES) | |
6530 | return -EPERM; | |
6531 | out: | |
6532 | return err; | |
6533 | } | |
1cab0652 BS |
6534 | |
6535 | static int _nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) | |
7d974794 BS |
6536 | { |
6537 | int status; | |
6538 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 6539 | .stateid = stateid, |
7d974794 BS |
6540 | }; |
6541 | struct nfs41_test_stateid_res res; | |
6542 | struct rpc_message msg = { | |
6543 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
6544 | .rpc_argp = &args, | |
6545 | .rpc_resp = &res, | |
6546 | }; | |
1cab0652 | 6547 | |
38527b15 | 6548 | dprintk("NFS call test_stateid %p\n", stateid); |
9d12b216 | 6549 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
1cab0652 | 6550 | status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
38527b15 CL |
6551 | if (status != NFS_OK) { |
6552 | dprintk("NFS reply test_stateid: failed, %d\n", status); | |
377e507d | 6553 | return status; |
38527b15 CL |
6554 | } |
6555 | dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status); | |
377e507d | 6556 | return -res.status; |
7d974794 BS |
6557 | } |
6558 | ||
38527b15 CL |
6559 | /** |
6560 | * nfs41_test_stateid - perform a TEST_STATEID operation | |
6561 | * | |
6562 | * @server: server / transport on which to perform the operation | |
6563 | * @stateid: state ID to test | |
6564 | * | |
6565 | * Returns NFS_OK if the server recognizes that "stateid" is valid. | |
6566 | * Otherwise a negative NFS4ERR value is returned if the operation | |
6567 | * failed or the state ID is not currently valid. | |
6568 | */ | |
1cab0652 | 6569 | static int nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
7d974794 BS |
6570 | { |
6571 | struct nfs4_exception exception = { }; | |
6572 | int err; | |
6573 | do { | |
377e507d CL |
6574 | err = _nfs41_test_stateid(server, stateid); |
6575 | if (err != -NFS4ERR_DELAY) | |
6576 | break; | |
6577 | nfs4_handle_exception(server, err, &exception); | |
7d974794 BS |
6578 | } while (exception.retry); |
6579 | return err; | |
6580 | } | |
9aeda35f | 6581 | |
1cab0652 | 6582 | static int _nfs4_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f | 6583 | { |
9aeda35f | 6584 | struct nfs41_free_stateid_args args = { |
1cab0652 | 6585 | .stateid = stateid, |
9aeda35f BS |
6586 | }; |
6587 | struct nfs41_free_stateid_res res; | |
6588 | struct rpc_message msg = { | |
6589 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
6590 | .rpc_argp = &args, | |
6591 | .rpc_resp = &res, | |
6592 | }; | |
38527b15 | 6593 | int status; |
9aeda35f | 6594 | |
38527b15 | 6595 | dprintk("NFS call free_stateid %p\n", stateid); |
9d12b216 | 6596 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
38527b15 | 6597 | status = nfs4_call_sync_sequence(server->client, server, &msg, |
377e507d | 6598 | &args.seq_args, &res.seq_res, 1); |
38527b15 CL |
6599 | dprintk("NFS reply free_stateid: %d\n", status); |
6600 | return status; | |
9aeda35f BS |
6601 | } |
6602 | ||
38527b15 CL |
6603 | /** |
6604 | * nfs41_free_stateid - perform a FREE_STATEID operation | |
6605 | * | |
6606 | * @server: server / transport on which to perform the operation | |
6607 | * @stateid: state ID to release | |
6608 | * | |
6609 | * Returns NFS_OK if the server freed "stateid". Otherwise a | |
6610 | * negative NFS4ERR value is returned. | |
6611 | */ | |
1cab0652 | 6612 | static int nfs41_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f BS |
6613 | { |
6614 | struct nfs4_exception exception = { }; | |
6615 | int err; | |
6616 | do { | |
377e507d CL |
6617 | err = _nfs4_free_stateid(server, stateid); |
6618 | if (err != -NFS4ERR_DELAY) | |
6619 | break; | |
6620 | nfs4_handle_exception(server, err, &exception); | |
9aeda35f BS |
6621 | } while (exception.retry); |
6622 | return err; | |
6623 | } | |
36281caa TM |
6624 | |
6625 | static bool nfs41_match_stateid(const nfs4_stateid *s1, | |
6626 | const nfs4_stateid *s2) | |
6627 | { | |
2d2f24ad | 6628 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
6629 | return false; |
6630 | ||
2d2f24ad | 6631 | if (s1->seqid == s2->seqid) |
36281caa | 6632 | return true; |
2d2f24ad | 6633 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
6634 | return true; |
6635 | ||
6636 | return false; | |
6637 | } | |
6638 | ||
557134a3 AA |
6639 | #endif /* CONFIG_NFS_V4_1 */ |
6640 | ||
36281caa TM |
6641 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
6642 | const nfs4_stateid *s2) | |
6643 | { | |
f597c537 | 6644 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
6645 | } |
6646 | ||
6647 | ||
17280175 | 6648 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 6649 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 6650 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
6651 | .recover_open = nfs4_open_reclaim, |
6652 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 6653 | .establish_clid = nfs4_init_clientid, |
90a16617 | 6654 | .get_clid_cred = nfs4_get_setclientid_cred, |
05f4c350 | 6655 | .detect_trunking = nfs40_discover_server_trunking, |
1da177e4 LT |
6656 | }; |
6657 | ||
591d71cb | 6658 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 6659 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
6660 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
6661 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
6662 | .recover_open = nfs4_open_reclaim, | |
6663 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 6664 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6665 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 6666 | .reclaim_complete = nfs41_proc_reclaim_complete, |
05f4c350 | 6667 | .detect_trunking = nfs41_discover_server_trunking, |
591d71cb AA |
6668 | }; |
6669 | #endif /* CONFIG_NFS_V4_1 */ | |
6670 | ||
17280175 | 6671 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
6672 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
6673 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
6674 | .recover_open = nfs4_open_expired, | |
6675 | .recover_lock = nfs4_lock_expired, | |
6676 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 6677 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
6678 | }; |
6679 | ||
6680 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 6681 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 6682 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 6683 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
6684 | .recover_open = nfs41_open_expired, |
6685 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 6686 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6687 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 6688 | }; |
591d71cb | 6689 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 6690 | |
17280175 | 6691 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 6692 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 6693 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 6694 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
6695 | }; |
6696 | ||
6697 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 6698 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 6699 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 6700 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 6701 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
6702 | }; |
6703 | #endif | |
6704 | ||
97dc1359 TM |
6705 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
6706 | .minor_version = 0, | |
6707 | .call_sync = _nfs4_call_sync, | |
36281caa | 6708 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 6709 | .find_root_sec = nfs4_find_root_sec, |
c48f4f35 TM |
6710 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
6711 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
6712 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
6713 | }; |
6714 | ||
6715 | #if defined(CONFIG_NFS_V4_1) | |
6716 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
6717 | .minor_version = 1, | |
6718 | .call_sync = _nfs4_call_sync_session, | |
36281caa | 6719 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 6720 | .find_root_sec = nfs41_find_root_sec, |
c48f4f35 TM |
6721 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
6722 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
6723 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
6724 | }; |
6725 | #endif | |
6726 | ||
97dc1359 TM |
6727 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
6728 | [0] = &nfs_v4_0_minor_ops, | |
6729 | #if defined(CONFIG_NFS_V4_1) | |
6730 | [1] = &nfs_v4_1_minor_ops, | |
6731 | #endif | |
6732 | }; | |
6733 | ||
73a79706 BS |
6734 | const struct inode_operations nfs4_dir_inode_operations = { |
6735 | .create = nfs_create, | |
6736 | .lookup = nfs_lookup, | |
6737 | .atomic_open = nfs_atomic_open, | |
6738 | .link = nfs_link, | |
6739 | .unlink = nfs_unlink, | |
6740 | .symlink = nfs_symlink, | |
6741 | .mkdir = nfs_mkdir, | |
6742 | .rmdir = nfs_rmdir, | |
6743 | .mknod = nfs_mknod, | |
6744 | .rename = nfs_rename, | |
6745 | .permission = nfs_permission, | |
6746 | .getattr = nfs_getattr, | |
6747 | .setattr = nfs_setattr, | |
6748 | .getxattr = generic_getxattr, | |
6749 | .setxattr = generic_setxattr, | |
6750 | .listxattr = generic_listxattr, | |
6751 | .removexattr = generic_removexattr, | |
6752 | }; | |
6753 | ||
92e1d5be | 6754 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
6755 | .permission = nfs_permission, |
6756 | .getattr = nfs_getattr, | |
6757 | .setattr = nfs_setattr, | |
64c2ce8b AK |
6758 | .getxattr = generic_getxattr, |
6759 | .setxattr = generic_setxattr, | |
6760 | .listxattr = generic_listxattr, | |
6761 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
6762 | }; |
6763 | ||
509de811 | 6764 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
6765 | .version = 4, /* protocol version */ |
6766 | .dentry_ops = &nfs4_dentry_operations, | |
6767 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 6768 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 6769 | .file_ops = &nfs4_file_operations, |
1da177e4 | 6770 | .getroot = nfs4_proc_get_root, |
281cad46 | 6771 | .submount = nfs4_submount, |
ff9099f2 | 6772 | .try_mount = nfs4_try_mount, |
1da177e4 LT |
6773 | .getattr = nfs4_proc_getattr, |
6774 | .setattr = nfs4_proc_setattr, | |
6775 | .lookup = nfs4_proc_lookup, | |
6776 | .access = nfs4_proc_access, | |
6777 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
6778 | .create = nfs4_proc_create, |
6779 | .remove = nfs4_proc_remove, | |
6780 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 6781 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 LT |
6782 | .unlink_done = nfs4_proc_unlink_done, |
6783 | .rename = nfs4_proc_rename, | |
d3d4152a | 6784 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 6785 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 6786 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
6787 | .link = nfs4_proc_link, |
6788 | .symlink = nfs4_proc_symlink, | |
6789 | .mkdir = nfs4_proc_mkdir, | |
6790 | .rmdir = nfs4_proc_remove, | |
6791 | .readdir = nfs4_proc_readdir, | |
6792 | .mknod = nfs4_proc_mknod, | |
6793 | .statfs = nfs4_proc_statfs, | |
6794 | .fsinfo = nfs4_proc_fsinfo, | |
6795 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 6796 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
6797 | .decode_dirent = nfs4_decode_dirent, |
6798 | .read_setup = nfs4_proc_read_setup, | |
1abb5088 | 6799 | .read_pageio_init = pnfs_pageio_init_read, |
ea7c3303 | 6800 | .read_rpc_prepare = nfs4_proc_read_rpc_prepare, |
ec06c096 | 6801 | .read_done = nfs4_read_done, |
1da177e4 | 6802 | .write_setup = nfs4_proc_write_setup, |
57208fa7 | 6803 | .write_pageio_init = pnfs_pageio_init_write, |
c6cb80d0 | 6804 | .write_rpc_prepare = nfs4_proc_write_rpc_prepare, |
788e7a89 | 6805 | .write_done = nfs4_write_done, |
1da177e4 | 6806 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 6807 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 6808 | .commit_done = nfs4_commit_done, |
1da177e4 | 6809 | .lock = nfs4_proc_lock, |
e50a1c2e | 6810 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 6811 | .close_context = nfs4_close_context, |
2b484297 | 6812 | .open_context = nfs4_atomic_open, |
011e2a7f | 6813 | .have_delegation = nfs4_have_delegation, |
57ec14c5 | 6814 | .return_delegation = nfs4_inode_return_delegation, |
6663ee7f | 6815 | .alloc_client = nfs4_alloc_client, |
45a52a02 | 6816 | .init_client = nfs4_init_client, |
cdb7eced | 6817 | .free_client = nfs4_free_client, |
1179acc6 BS |
6818 | .create_server = nfs4_create_server, |
6819 | .clone_server = nfs_clone_server, | |
1da177e4 LT |
6820 | }; |
6821 | ||
64c2ce8b AK |
6822 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
6823 | .prefix = XATTR_NAME_NFSV4_ACL, | |
6824 | .list = nfs4_xattr_list_nfs4_acl, | |
6825 | .get = nfs4_xattr_get_nfs4_acl, | |
6826 | .set = nfs4_xattr_set_nfs4_acl, | |
6827 | }; | |
6828 | ||
6829 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
6830 | &nfs4_xattr_nfs4_acl_handler, | |
6831 | NULL | |
6832 | }; | |
6833 | ||
1da177e4 LT |
6834 | /* |
6835 | * Local variables: | |
6836 | * c-basic-offset: 8 | |
6837 | * End: | |
6838 | */ |