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> | |
5a0e3ad6 | 42 | #include <linux/slab.h> |
1da177e4 | 43 | #include <linux/sunrpc/clnt.h> |
8f70e95f | 44 | #include <linux/sunrpc/gss_api.h> |
1da177e4 LT |
45 | #include <linux/nfs.h> |
46 | #include <linux/nfs4.h> | |
47 | #include <linux/nfs_fs.h> | |
48 | #include <linux/nfs_page.h> | |
9b7160c5 | 49 | #include <linux/nfs_mount.h> |
1da177e4 | 50 | #include <linux/namei.h> |
02a913a7 | 51 | #include <linux/mount.h> |
99fe60d0 | 52 | #include <linux/module.h> |
5a0ffe54 | 53 | #include <linux/sunrpc/bc_xprt.h> |
64c2ce8b | 54 | #include <linux/xattr.h> |
c7a360b0 | 55 | #include <linux/utsname.h> |
1da177e4 | 56 | |
4ce79717 | 57 | #include "nfs4_fs.h" |
1da177e4 | 58 | #include "delegation.h" |
101070ca | 59 | #include "internal.h" |
006ea73e | 60 | #include "iostat.h" |
fc931582 | 61 | #include "callback.h" |
b1f69b75 | 62 | #include "pnfs.h" |
1da177e4 LT |
63 | |
64 | #define NFSDBG_FACILITY NFSDBG_PROC | |
65 | ||
2066fe89 | 66 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
67 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
68 | ||
a78cb57a TM |
69 | #define NFS4_MAX_LOOP_ON_RECOVER (10) |
70 | ||
cdd4e68b | 71 | struct nfs4_opendata; |
864472e9 | 72 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
b257957e | 73 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data); |
1da177e4 | 74 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
9e33bed5 | 75 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *); |
9936781d | 76 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr); |
0ab64e0e TM |
77 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
78 | struct nfs_fattr *fattr, struct iattr *sattr, | |
79 | struct nfs4_state *state); | |
f062eb6c BS |
80 | #ifdef CONFIG_NFS_V4_1 |
81 | static int nfs41_test_stateid(struct nfs_server *, struct nfs4_state *); | |
82 | static int nfs41_free_stateid(struct nfs_server *, struct nfs4_state *); | |
83 | #endif | |
1da177e4 | 84 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 85 | static int nfs4_map_errors(int err) |
1da177e4 | 86 | { |
52567b03 TM |
87 | if (err >= -1000) |
88 | return err; | |
89 | switch (err) { | |
90 | case -NFS4ERR_RESOURCE: | |
91 | return -EREMOTEIO; | |
7ebb9315 BS |
92 | case -NFS4ERR_WRONGSEC: |
93 | return -EPERM; | |
3ddeb7c5 TM |
94 | case -NFS4ERR_BADOWNER: |
95 | case -NFS4ERR_BADNAME: | |
96 | return -EINVAL; | |
52567b03 | 97 | default: |
1da177e4 | 98 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 99 | __func__, -err); |
52567b03 | 100 | break; |
1da177e4 | 101 | } |
52567b03 | 102 | return -EIO; |
1da177e4 LT |
103 | } |
104 | ||
105 | /* | |
106 | * This is our standard bitmap for GETATTR requests. | |
107 | */ | |
108 | const u32 nfs4_fattr_bitmap[2] = { | |
109 | FATTR4_WORD0_TYPE | |
110 | | FATTR4_WORD0_CHANGE | |
111 | | FATTR4_WORD0_SIZE | |
112 | | FATTR4_WORD0_FSID | |
113 | | FATTR4_WORD0_FILEID, | |
114 | FATTR4_WORD1_MODE | |
115 | | FATTR4_WORD1_NUMLINKS | |
116 | | FATTR4_WORD1_OWNER | |
117 | | FATTR4_WORD1_OWNER_GROUP | |
118 | | FATTR4_WORD1_RAWDEV | |
119 | | FATTR4_WORD1_SPACE_USED | |
120 | | FATTR4_WORD1_TIME_ACCESS | |
121 | | FATTR4_WORD1_TIME_METADATA | |
122 | | FATTR4_WORD1_TIME_MODIFY | |
123 | }; | |
124 | ||
125 | const u32 nfs4_statfs_bitmap[2] = { | |
126 | FATTR4_WORD0_FILES_AVAIL | |
127 | | FATTR4_WORD0_FILES_FREE | |
128 | | FATTR4_WORD0_FILES_TOTAL, | |
129 | FATTR4_WORD1_SPACE_AVAIL | |
130 | | FATTR4_WORD1_SPACE_FREE | |
131 | | FATTR4_WORD1_SPACE_TOTAL | |
132 | }; | |
133 | ||
4ce79717 | 134 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
135 | FATTR4_WORD0_MAXLINK |
136 | | FATTR4_WORD0_MAXNAME, | |
137 | 0 | |
138 | }; | |
139 | ||
dae100c2 | 140 | const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE |
1da177e4 LT |
141 | | FATTR4_WORD0_MAXREAD |
142 | | FATTR4_WORD0_MAXWRITE | |
143 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 144 | FATTR4_WORD1_TIME_DELTA |
dae100c2 FI |
145 | | FATTR4_WORD1_FS_LAYOUT_TYPES, |
146 | FATTR4_WORD2_LAYOUT_BLKSIZE | |
1da177e4 LT |
147 | }; |
148 | ||
830b8e33 MN |
149 | const u32 nfs4_fs_locations_bitmap[2] = { |
150 | FATTR4_WORD0_TYPE | |
151 | | FATTR4_WORD0_CHANGE | |
152 | | FATTR4_WORD0_SIZE | |
153 | | FATTR4_WORD0_FSID | |
154 | | FATTR4_WORD0_FILEID | |
155 | | FATTR4_WORD0_FS_LOCATIONS, | |
156 | FATTR4_WORD1_MODE | |
157 | | FATTR4_WORD1_NUMLINKS | |
158 | | FATTR4_WORD1_OWNER | |
159 | | FATTR4_WORD1_OWNER_GROUP | |
160 | | FATTR4_WORD1_RAWDEV | |
161 | | FATTR4_WORD1_SPACE_USED | |
162 | | FATTR4_WORD1_TIME_ACCESS | |
163 | | FATTR4_WORD1_TIME_METADATA | |
164 | | FATTR4_WORD1_TIME_MODIFY | |
165 | | FATTR4_WORD1_MOUNTED_ON_FILEID | |
166 | }; | |
167 | ||
bc4785cd | 168 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
169 | struct nfs4_readdir_arg *readdir) |
170 | { | |
0dbb4c67 | 171 | __be32 *start, *p; |
1da177e4 LT |
172 | |
173 | BUG_ON(readdir->count < 80); | |
174 | if (cookie > 2) { | |
b7ef1956 | 175 | readdir->cookie = cookie; |
1da177e4 LT |
176 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
177 | return; | |
178 | } | |
179 | ||
180 | readdir->cookie = 0; | |
181 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
182 | if (cookie == 2) | |
183 | return; | |
184 | ||
185 | /* | |
186 | * NFSv4 servers do not return entries for '.' and '..' | |
187 | * Therefore, we fake these entries here. We let '.' | |
188 | * have cookie 0 and '..' have cookie 1. Note that | |
189 | * when talking to the server, we always send cookie 0 | |
190 | * instead of 1 or 2. | |
191 | */ | |
0dbb4c67 | 192 | start = p = kmap_atomic(*readdir->pages, KM_USER0); |
1da177e4 LT |
193 | |
194 | if (cookie == 0) { | |
195 | *p++ = xdr_one; /* next */ | |
196 | *p++ = xdr_zero; /* cookie, first word */ | |
197 | *p++ = xdr_one; /* cookie, second word */ | |
198 | *p++ = xdr_one; /* entry len */ | |
199 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
200 | p++; | |
201 | *p++ = xdr_one; /* bitmap length */ | |
202 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
203 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 204 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
205 | } |
206 | ||
207 | *p++ = xdr_one; /* next */ | |
208 | *p++ = xdr_zero; /* cookie, first word */ | |
209 | *p++ = xdr_two; /* cookie, second word */ | |
210 | *p++ = xdr_two; /* entry len */ | |
211 | memcpy(p, "..\0\0", 4); /* entry */ | |
212 | p++; | |
213 | *p++ = xdr_one; /* bitmap length */ | |
214 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
215 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 216 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
217 | |
218 | readdir->pgbase = (char *)p - (char *)start; | |
219 | readdir->count -= readdir->pgbase; | |
220 | kunmap_atomic(start, KM_USER0); | |
221 | } | |
222 | ||
65de872e TM |
223 | static int nfs4_wait_clnt_recover(struct nfs_client *clp) |
224 | { | |
225 | int res; | |
226 | ||
227 | might_sleep(); | |
228 | ||
e005e804 | 229 | res = wait_on_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING, |
72cb77f4 | 230 | nfs_wait_bit_killable, TASK_KILLABLE); |
65de872e TM |
231 | return res; |
232 | } | |
233 | ||
234 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) | |
235 | { | |
236 | int res = 0; | |
237 | ||
238 | might_sleep(); | |
239 | ||
240 | if (*timeout <= 0) | |
241 | *timeout = NFS4_POLL_RETRY_MIN; | |
242 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
243 | *timeout = NFS4_POLL_RETRY_MAX; | |
244 | schedule_timeout_killable(*timeout); | |
245 | if (fatal_signal_pending(current)) | |
246 | res = -ERESTARTSYS; | |
247 | *timeout <<= 1; | |
248 | return res; | |
249 | } | |
250 | ||
251 | /* This is the error handling routine for processes that are allowed | |
252 | * to sleep. | |
253 | */ | |
b064eca2 | 254 | static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
65de872e TM |
255 | { |
256 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 257 | struct nfs4_state *state = exception->state; |
65de872e TM |
258 | int ret = errorcode; |
259 | ||
260 | exception->retry = 0; | |
261 | switch(errorcode) { | |
262 | case 0: | |
263 | return 0; | |
9e33bed5 TM |
264 | case -NFS4ERR_ADMIN_REVOKED: |
265 | case -NFS4ERR_BAD_STATEID: | |
266 | case -NFS4ERR_OPENMODE: | |
267 | if (state == NULL) | |
268 | break; | |
0400a6b0 TM |
269 | nfs4_schedule_stateid_recovery(server, state); |
270 | goto wait_on_recovery; | |
0ced63d1 TM |
271 | case -NFS4ERR_EXPIRED: |
272 | if (state != NULL) | |
273 | nfs4_schedule_stateid_recovery(server, state); | |
65de872e | 274 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 275 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
276 | nfs4_schedule_lease_recovery(clp); |
277 | goto wait_on_recovery; | |
03391693 | 278 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
279 | case -NFS4ERR_BADSESSION: |
280 | case -NFS4ERR_BADSLOT: | |
281 | case -NFS4ERR_BAD_HIGH_SLOT: | |
282 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
283 | case -NFS4ERR_DEADSESSION: | |
284 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
285 | case -NFS4ERR_SEQ_MISORDERED: | |
286 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
287 | errorcode); | |
0400a6b0 | 288 | nfs4_schedule_session_recovery(clp->cl_session); |
4745e315 | 289 | exception->retry = 1; |
b9179237 | 290 | break; |
03391693 | 291 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 292 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
293 | if (exception->timeout > HZ) { |
294 | /* We have retried a decent amount, time to | |
295 | * fail | |
296 | */ | |
297 | ret = -EBUSY; | |
298 | break; | |
299 | } | |
65de872e TM |
300 | case -NFS4ERR_GRACE: |
301 | case -NFS4ERR_DELAY: | |
2c643488 | 302 | case -EKEYEXPIRED: |
65de872e TM |
303 | ret = nfs4_delay(server->client, &exception->timeout); |
304 | if (ret != 0) | |
305 | break; | |
a8a4ae3a | 306 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
307 | case -NFS4ERR_OLD_STATEID: |
308 | exception->retry = 1; | |
b064eca2 TM |
309 | break; |
310 | case -NFS4ERR_BADOWNER: | |
311 | /* The following works around a Linux server bug! */ | |
312 | case -NFS4ERR_BADNAME: | |
313 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
314 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
315 | exception->retry = 1; | |
316 | printk(KERN_WARNING "NFS: v4 server %s " | |
317 | "does not accept raw " | |
318 | "uid/gids. " | |
319 | "Reenabling the idmapper.\n", | |
320 | server->nfs_client->cl_hostname); | |
321 | } | |
65de872e TM |
322 | } |
323 | /* We failed to handle the error */ | |
324 | return nfs4_map_errors(ret); | |
0400a6b0 | 325 | wait_on_recovery: |
a2c0b9e2 TM |
326 | ret = nfs4_wait_clnt_recover(clp); |
327 | if (ret == 0) | |
328 | exception->retry = 1; | |
329 | return ret; | |
65de872e TM |
330 | } |
331 | ||
332 | ||
452e9352 | 333 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 334 | { |
1da177e4 LT |
335 | spin_lock(&clp->cl_lock); |
336 | if (time_before(clp->cl_last_renewal,timestamp)) | |
337 | clp->cl_last_renewal = timestamp; | |
338 | spin_unlock(&clp->cl_lock); | |
339 | } | |
340 | ||
452e9352 TM |
341 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
342 | { | |
343 | do_renew_lease(server->nfs_client, timestamp); | |
344 | } | |
345 | ||
cccef3b9 AA |
346 | #if defined(CONFIG_NFS_V4_1) |
347 | ||
e2c4ab3c AA |
348 | /* |
349 | * nfs4_free_slot - free a slot and efficiently update slot table. | |
350 | * | |
351 | * freeing a slot is trivially done by clearing its respective bit | |
352 | * in the bitmap. | |
353 | * If the freed slotid equals highest_used_slotid we want to update it | |
354 | * so that the server would be able to size down the slot table if needed, | |
355 | * otherwise we know that the highest_used_slotid is still in use. | |
356 | * When updating highest_used_slotid there may be "holes" in the bitmap | |
357 | * so we need to scan down from highest_used_slotid to 0 looking for the now | |
358 | * highest slotid in use. | |
359 | * If none found, highest_used_slotid is set to -1. | |
35dc1d74 TM |
360 | * |
361 | * Must be called while holding tbl->slot_tbl_lock | |
e2c4ab3c AA |
362 | */ |
363 | static void | |
dfb4f309 | 364 | nfs4_free_slot(struct nfs4_slot_table *tbl, struct nfs4_slot *free_slot) |
e2c4ab3c | 365 | { |
dfb4f309 | 366 | int free_slotid = free_slot - tbl->slots; |
e2c4ab3c AA |
367 | int slotid = free_slotid; |
368 | ||
dfb4f309 | 369 | BUG_ON(slotid < 0 || slotid >= NFS4_MAX_SLOT_TABLE); |
e2c4ab3c AA |
370 | /* clear used bit in bitmap */ |
371 | __clear_bit(slotid, tbl->used_slots); | |
372 | ||
373 | /* update highest_used_slotid when it is freed */ | |
374 | if (slotid == tbl->highest_used_slotid) { | |
375 | slotid = find_last_bit(tbl->used_slots, tbl->max_slots); | |
bcb56164 | 376 | if (slotid < tbl->max_slots) |
e2c4ab3c AA |
377 | tbl->highest_used_slotid = slotid; |
378 | else | |
379 | tbl->highest_used_slotid = -1; | |
380 | } | |
e2c4ab3c AA |
381 | dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__, |
382 | free_slotid, tbl->highest_used_slotid); | |
383 | } | |
384 | ||
3bfb0fc5 | 385 | /* |
42acd021 | 386 | * Signal state manager thread if session fore channel is drained |
3bfb0fc5 | 387 | */ |
42acd021 | 388 | static void nfs4_check_drain_fc_complete(struct nfs4_session *ses) |
3bfb0fc5 | 389 | { |
689cf5c1 AB |
390 | struct rpc_task *task; |
391 | ||
a2118c33 | 392 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state)) { |
689cf5c1 AB |
393 | task = rpc_wake_up_next(&ses->fc_slot_table.slot_tbl_waitq); |
394 | if (task) | |
395 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
3bfb0fc5 AB |
396 | return; |
397 | } | |
398 | ||
399 | if (ses->fc_slot_table.highest_used_slotid != -1) | |
400 | return; | |
401 | ||
42acd021 AA |
402 | dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__); |
403 | complete(&ses->fc_slot_table.complete); | |
404 | } | |
405 | ||
406 | /* | |
407 | * Signal state manager thread if session back channel is drained | |
408 | */ | |
409 | void nfs4_check_drain_bc_complete(struct nfs4_session *ses) | |
410 | { | |
411 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state) || | |
412 | ses->bc_slot_table.highest_used_slotid != -1) | |
413 | return; | |
414 | dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__); | |
415 | complete(&ses->bc_slot_table.complete); | |
3bfb0fc5 AB |
416 | } |
417 | ||
d185a334 | 418 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 AA |
419 | { |
420 | struct nfs4_slot_table *tbl; | |
421 | ||
d185a334 | 422 | tbl = &res->sr_session->fc_slot_table; |
dfb4f309 | 423 | if (!res->sr_slot) { |
13615871 AA |
424 | /* just wake up the next guy waiting since |
425 | * we may have not consumed a slot after all */ | |
691daf3b | 426 | dprintk("%s: No slot\n", __func__); |
35dc1d74 | 427 | return; |
13615871 | 428 | } |
ea028ac9 | 429 | |
35dc1d74 | 430 | spin_lock(&tbl->slot_tbl_lock); |
dfb4f309 | 431 | nfs4_free_slot(tbl, res->sr_slot); |
42acd021 | 432 | nfs4_check_drain_fc_complete(res->sr_session); |
35dc1d74 | 433 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 434 | res->sr_slot = NULL; |
13615871 AA |
435 | } |
436 | ||
14516c3a | 437 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c AA |
438 | { |
439 | unsigned long timestamp; | |
14516c3a | 440 | struct nfs_client *clp; |
b0df806c AA |
441 | |
442 | /* | |
443 | * sr_status remains 1 if an RPC level error occurred. The server | |
444 | * may or may not have processed the sequence operation.. | |
445 | * Proceed as if the server received and processed the sequence | |
446 | * operation. | |
447 | */ | |
448 | if (res->sr_status == 1) | |
449 | res->sr_status = NFS_OK; | |
450 | ||
468f8613 BS |
451 | /* don't increment the sequence number if the task wasn't sent */ |
452 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
453 | goto out; |
454 | ||
691daf3b | 455 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
456 | switch (res->sr_status) { |
457 | case 0: | |
b0df806c | 458 | /* Update the slot's sequence and clientid lease timer */ |
dfb4f309 | 459 | ++res->sr_slot->seq_nr; |
b0df806c | 460 | timestamp = res->sr_renewal_time; |
14516c3a | 461 | clp = res->sr_session->clp; |
452e9352 | 462 | do_renew_lease(clp, timestamp); |
0629e370 | 463 | /* Check sequence flags */ |
b4410c2f TM |
464 | if (res->sr_status_flags != 0) |
465 | nfs4_schedule_lease_recovery(clp); | |
14516c3a TM |
466 | break; |
467 | case -NFS4ERR_DELAY: | |
468 | /* The server detected a resend of the RPC call and | |
469 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
470 | * of RFC5661. | |
471 | */ | |
12364a4f | 472 | dprintk("%s: slot=%td seq=%d: Operation in progress\n", |
dfb4f309 BH |
473 | __func__, |
474 | res->sr_slot - res->sr_session->fc_slot_table.slots, | |
475 | res->sr_slot->seq_nr); | |
14516c3a TM |
476 | goto out_retry; |
477 | default: | |
478 | /* Just update the slot sequence no. */ | |
dfb4f309 | 479 | ++res->sr_slot->seq_nr; |
b0df806c AA |
480 | } |
481 | out: | |
482 | /* The session may be reset by one of the error handlers. */ | |
483 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 484 | nfs41_sequence_free_slot(res); |
14516c3a TM |
485 | return 1; |
486 | out_retry: | |
d05dd4e9 | 487 | if (!rpc_restart_call(task)) |
14516c3a TM |
488 | goto out; |
489 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
490 | return 0; | |
b0df806c AA |
491 | } |
492 | ||
14516c3a TM |
493 | static int nfs4_sequence_done(struct rpc_task *task, |
494 | struct nfs4_sequence_res *res) | |
df896455 | 495 | { |
14516c3a TM |
496 | if (res->sr_session == NULL) |
497 | return 1; | |
498 | return nfs41_sequence_done(task, res); | |
df896455 TM |
499 | } |
500 | ||
510b8175 BH |
501 | /* |
502 | * nfs4_find_slot - efficiently look for a free slot | |
503 | * | |
504 | * nfs4_find_slot looks for an unset bit in the used_slots bitmap. | |
505 | * If found, we mark the slot as used, update the highest_used_slotid, | |
506 | * and respectively set up the sequence operation args. | |
507 | * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise. | |
fbcd4abc AA |
508 | * |
509 | * Note: must be called with under the slot_tbl_lock. | |
510b8175 BH |
510 | */ |
511 | static u8 | |
40ead580 | 512 | nfs4_find_slot(struct nfs4_slot_table *tbl) |
510b8175 BH |
513 | { |
514 | int slotid; | |
515 | u8 ret_id = NFS4_MAX_SLOT_TABLE; | |
516 | BUILD_BUG_ON((u8)NFS4_MAX_SLOT_TABLE != (int)NFS4_MAX_SLOT_TABLE); | |
517 | ||
510b8175 BH |
518 | dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n", |
519 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, | |
520 | tbl->max_slots); | |
521 | slotid = find_first_zero_bit(tbl->used_slots, tbl->max_slots); | |
522 | if (slotid >= tbl->max_slots) | |
523 | goto out; | |
524 | __set_bit(slotid, tbl->used_slots); | |
525 | if (slotid > tbl->highest_used_slotid) | |
526 | tbl->highest_used_slotid = slotid; | |
527 | ret_id = slotid; | |
528 | out: | |
529 | dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n", | |
530 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, ret_id); | |
510b8175 BH |
531 | return ret_id; |
532 | } | |
533 | ||
dc70d7b3 | 534 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
535 | struct nfs4_sequence_args *args, |
536 | struct nfs4_sequence_res *res, | |
537 | int cache_reply, | |
538 | struct rpc_task *task) | |
539 | { | |
fbcd4abc AA |
540 | struct nfs4_slot *slot; |
541 | struct nfs4_slot_table *tbl; | |
542 | u8 slotid; | |
543 | ||
544 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 545 | /* slot already allocated? */ |
dfb4f309 | 546 | if (res->sr_slot != NULL) |
ce5039c1 AA |
547 | return 0; |
548 | ||
fbcd4abc AA |
549 | tbl = &session->fc_slot_table; |
550 | ||
551 | spin_lock(&tbl->slot_tbl_lock); | |
a2118c33 | 552 | if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) && |
5601a00d | 553 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { |
ea028ac9 AA |
554 | /* |
555 | * The state manager will wait until the slot table is empty. | |
556 | * Schedule the reset thread | |
557 | */ | |
05f0d236 | 558 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
b069d94a | 559 | spin_unlock(&tbl->slot_tbl_lock); |
bcb56164 | 560 | dprintk("%s Schedule Session Reset\n", __func__); |
05f0d236 | 561 | return -EAGAIN; |
b069d94a AA |
562 | } |
563 | ||
689cf5c1 AB |
564 | if (!rpc_queue_empty(&tbl->slot_tbl_waitq) && |
565 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { | |
566 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
567 | spin_unlock(&tbl->slot_tbl_lock); | |
568 | dprintk("%s enforce FIFO order\n", __func__); | |
569 | return -EAGAIN; | |
570 | } | |
571 | ||
40ead580 | 572 | slotid = nfs4_find_slot(tbl); |
fbcd4abc AA |
573 | if (slotid == NFS4_MAX_SLOT_TABLE) { |
574 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
575 | spin_unlock(&tbl->slot_tbl_lock); | |
576 | dprintk("<-- %s: no free slots\n", __func__); | |
577 | return -EAGAIN; | |
578 | } | |
579 | spin_unlock(&tbl->slot_tbl_lock); | |
580 | ||
689cf5c1 | 581 | rpc_task_set_priority(task, RPC_PRIORITY_NORMAL); |
fbcd4abc | 582 | slot = tbl->slots + slotid; |
99fe60d0 | 583 | args->sa_session = session; |
fbcd4abc AA |
584 | args->sa_slotid = slotid; |
585 | args->sa_cache_this = cache_reply; | |
586 | ||
587 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, slotid, slot->seq_nr); | |
588 | ||
99fe60d0 | 589 | res->sr_session = session; |
dfb4f309 | 590 | res->sr_slot = slot; |
fbcd4abc | 591 | res->sr_renewal_time = jiffies; |
2a6e26cd | 592 | res->sr_status_flags = 0; |
fbcd4abc AA |
593 | /* |
594 | * sr_status is only set in decode_sequence, and so will remain | |
595 | * set to 1 if an rpc level failure occurs. | |
596 | */ | |
597 | res->sr_status = 1; | |
ce5039c1 AA |
598 | return 0; |
599 | } | |
dc70d7b3 | 600 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 601 | |
035168ab | 602 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
603 | struct nfs4_sequence_args *args, |
604 | struct nfs4_sequence_res *res, | |
605 | int cache_reply, | |
606 | struct rpc_task *task) | |
607 | { | |
035168ab | 608 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
609 | int ret = 0; |
610 | ||
035168ab TM |
611 | if (session == NULL) { |
612 | args->sa_session = NULL; | |
613 | res->sr_session = NULL; | |
614 | goto out; | |
615 | } | |
616 | ||
12364a4f | 617 | dprintk("--> %s clp %p session %p sr_slot %td\n", |
dfb4f309 BH |
618 | __func__, session->clp, session, res->sr_slot ? |
619 | res->sr_slot - session->fc_slot_table.slots : -1); | |
ce5039c1 | 620 | |
035168ab | 621 | ret = nfs41_setup_sequence(session, args, res, cache_reply, |
ce5039c1 | 622 | task); |
ce5039c1 AA |
623 | out: |
624 | dprintk("<-- %s status=%d\n", __func__, ret); | |
625 | return ret; | |
626 | } | |
627 | ||
628 | struct nfs41_call_sync_data { | |
035168ab | 629 | const struct nfs_server *seq_server; |
ce5039c1 AA |
630 | struct nfs4_sequence_args *seq_args; |
631 | struct nfs4_sequence_res *seq_res; | |
632 | int cache_reply; | |
633 | }; | |
634 | ||
635 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
636 | { | |
637 | struct nfs41_call_sync_data *data = calldata; | |
638 | ||
035168ab TM |
639 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
640 | ||
641 | if (nfs4_setup_sequence(data->seq_server, data->seq_args, | |
ce5039c1 AA |
642 | data->seq_res, data->cache_reply, task)) |
643 | return; | |
644 | rpc_call_start(task); | |
645 | } | |
646 | ||
b257957e AB |
647 | static void nfs41_call_priv_sync_prepare(struct rpc_task *task, void *calldata) |
648 | { | |
649 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
650 | nfs41_call_sync_prepare(task, calldata); | |
651 | } | |
652 | ||
69ab40c4 AA |
653 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
654 | { | |
655 | struct nfs41_call_sync_data *data = calldata; | |
656 | ||
14516c3a | 657 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
658 | } |
659 | ||
ce5039c1 AA |
660 | struct rpc_call_ops nfs41_call_sync_ops = { |
661 | .rpc_call_prepare = nfs41_call_sync_prepare, | |
69ab40c4 | 662 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
663 | }; |
664 | ||
b257957e AB |
665 | struct rpc_call_ops nfs41_call_priv_sync_ops = { |
666 | .rpc_call_prepare = nfs41_call_priv_sync_prepare, | |
667 | .rpc_call_done = nfs41_call_sync_done, | |
668 | }; | |
669 | ||
7c513058 BS |
670 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
671 | struct nfs_server *server, | |
ce5039c1 AA |
672 | struct rpc_message *msg, |
673 | struct nfs4_sequence_args *args, | |
674 | struct nfs4_sequence_res *res, | |
b257957e AB |
675 | int cache_reply, |
676 | int privileged) | |
ce5039c1 AA |
677 | { |
678 | int ret; | |
679 | struct rpc_task *task; | |
680 | struct nfs41_call_sync_data data = { | |
035168ab | 681 | .seq_server = server, |
ce5039c1 AA |
682 | .seq_args = args, |
683 | .seq_res = res, | |
684 | .cache_reply = cache_reply, | |
685 | }; | |
686 | struct rpc_task_setup task_setup = { | |
7c513058 | 687 | .rpc_client = clnt, |
ce5039c1 AA |
688 | .rpc_message = msg, |
689 | .callback_ops = &nfs41_call_sync_ops, | |
690 | .callback_data = &data | |
691 | }; | |
692 | ||
dfb4f309 | 693 | res->sr_slot = NULL; |
b257957e AB |
694 | if (privileged) |
695 | task_setup.callback_ops = &nfs41_call_priv_sync_ops; | |
ce5039c1 AA |
696 | task = rpc_run_task(&task_setup); |
697 | if (IS_ERR(task)) | |
698 | ret = PTR_ERR(task); | |
699 | else { | |
700 | ret = task->tk_status; | |
701 | rpc_put_task(task); | |
702 | } | |
703 | return ret; | |
704 | } | |
705 | ||
7c513058 BS |
706 | int _nfs4_call_sync_session(struct rpc_clnt *clnt, |
707 | struct nfs_server *server, | |
cccef3b9 AA |
708 | struct rpc_message *msg, |
709 | struct nfs4_sequence_args *args, | |
710 | struct nfs4_sequence_res *res, | |
711 | int cache_reply) | |
712 | { | |
7c513058 | 713 | return nfs4_call_sync_sequence(clnt, server, msg, args, res, cache_reply, 0); |
cccef3b9 AA |
714 | } |
715 | ||
df896455 | 716 | #else |
14516c3a TM |
717 | static int nfs4_sequence_done(struct rpc_task *task, |
718 | struct nfs4_sequence_res *res) | |
df896455 | 719 | { |
14516c3a | 720 | return 1; |
df896455 | 721 | } |
cccef3b9 AA |
722 | #endif /* CONFIG_NFS_V4_1 */ |
723 | ||
7c513058 BS |
724 | int _nfs4_call_sync(struct rpc_clnt *clnt, |
725 | struct nfs_server *server, | |
cccef3b9 AA |
726 | struct rpc_message *msg, |
727 | struct nfs4_sequence_args *args, | |
728 | struct nfs4_sequence_res *res, | |
729 | int cache_reply) | |
730 | { | |
f3752975 | 731 | args->sa_session = res->sr_session = NULL; |
7c513058 | 732 | return rpc_call_sync(clnt, msg, 0); |
cccef3b9 AA |
733 | } |
734 | ||
e73b83f2 | 735 | static inline |
7c513058 BS |
736 | int nfs4_call_sync(struct rpc_clnt *clnt, |
737 | struct nfs_server *server, | |
e73b83f2 BS |
738 | struct rpc_message *msg, |
739 | struct nfs4_sequence_args *args, | |
740 | struct nfs4_sequence_res *res, | |
741 | int cache_reply) | |
742 | { | |
7c513058 BS |
743 | return server->nfs_client->cl_mvops->call_sync(clnt, server, msg, |
744 | args, res, cache_reply); | |
e73b83f2 | 745 | } |
cccef3b9 | 746 | |
38478b24 | 747 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 748 | { |
38478b24 | 749 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 750 | |
38478b24 | 751 | spin_lock(&dir->i_lock); |
40d24704 | 752 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; |
a9a4a87a | 753 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 754 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 755 | dir->i_version = cinfo->after; |
38478b24 | 756 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
757 | } |
758 | ||
e56e0b78 | 759 | struct nfs4_opendata { |
c6d00e63 | 760 | struct kref kref; |
e56e0b78 TM |
761 | struct nfs_openargs o_arg; |
762 | struct nfs_openres o_res; | |
cdd4e68b TM |
763 | struct nfs_open_confirmargs c_arg; |
764 | struct nfs_open_confirmres c_res; | |
e56e0b78 TM |
765 | struct nfs_fattr f_attr; |
766 | struct nfs_fattr dir_attr; | |
e56e0b78 | 767 | struct dentry *dir; |
82a2c1b7 | 768 | struct dentry *dentry; |
e56e0b78 | 769 | struct nfs4_state_owner *owner; |
aac00a8d | 770 | struct nfs4_state *state; |
e56e0b78 | 771 | struct iattr attrs; |
26e976a8 | 772 | unsigned long timestamp; |
3e309914 | 773 | unsigned int rpc_done : 1; |
24ac23ab TM |
774 | int rpc_status; |
775 | int cancelled; | |
e56e0b78 TM |
776 | }; |
777 | ||
2ced46c2 TM |
778 | |
779 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
780 | { | |
781 | p->o_res.f_attr = &p->f_attr; | |
782 | p->o_res.dir_attr = &p->dir_attr; | |
c1d51931 TM |
783 | p->o_res.seqid = p->o_arg.seqid; |
784 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 TM |
785 | p->o_res.server = p->o_arg.server; |
786 | nfs_fattr_init(&p->f_attr); | |
787 | nfs_fattr_init(&p->dir_attr); | |
788 | } | |
789 | ||
82a2c1b7 | 790 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 791 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be TM |
792 | const struct iattr *attrs, |
793 | gfp_t gfp_mask) | |
e56e0b78 | 794 | { |
82a2c1b7 | 795 | struct dentry *parent = dget_parent(dentry); |
e56e0b78 TM |
796 | struct inode *dir = parent->d_inode; |
797 | struct nfs_server *server = NFS_SERVER(dir); | |
798 | struct nfs4_opendata *p; | |
799 | ||
8535b2be | 800 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
801 | if (p == NULL) |
802 | goto err; | |
8535b2be | 803 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 TM |
804 | if (p->o_arg.seqid == NULL) |
805 | goto err_free; | |
82a2c1b7 AV |
806 | nfs_sb_active(dentry->d_sb); |
807 | p->dentry = dget(dentry); | |
e56e0b78 TM |
808 | p->dir = parent; |
809 | p->owner = sp; | |
810 | atomic_inc(&sp->so_count); | |
811 | p->o_arg.fh = NFS_FH(dir); | |
dc0b027d TM |
812 | p->o_arg.open_flags = flags; |
813 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
7539bbab | 814 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 815 | p->o_arg.id = sp->so_owner_id.id; |
82a2c1b7 | 816 | p->o_arg.name = &dentry->d_name; |
e56e0b78 TM |
817 | p->o_arg.server = server; |
818 | p->o_arg.bitmask = server->attr_bitmask; | |
819 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; | |
d77d76ff TM |
820 | if (flags & O_CREAT) { |
821 | u32 *s; | |
822 | ||
e56e0b78 TM |
823 | p->o_arg.u.attrs = &p->attrs; |
824 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
d77d76ff TM |
825 | s = (u32 *) p->o_arg.u.verifier.data; |
826 | s[0] = jiffies; | |
827 | s[1] = current->pid; | |
e56e0b78 | 828 | } |
cdd4e68b TM |
829 | p->c_arg.fh = &p->o_res.fh; |
830 | p->c_arg.stateid = &p->o_res.stateid; | |
831 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 832 | nfs4_init_opendata_res(p); |
c6d00e63 | 833 | kref_init(&p->kref); |
e56e0b78 TM |
834 | return p; |
835 | err_free: | |
836 | kfree(p); | |
837 | err: | |
838 | dput(parent); | |
839 | return NULL; | |
840 | } | |
841 | ||
c6d00e63 | 842 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 843 | { |
c6d00e63 TM |
844 | struct nfs4_opendata *p = container_of(kref, |
845 | struct nfs4_opendata, kref); | |
82a2c1b7 | 846 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
847 | |
848 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
849 | if (p->state != NULL) |
850 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
851 | nfs4_put_state_owner(p->owner); |
852 | dput(p->dir); | |
82a2c1b7 AV |
853 | dput(p->dentry); |
854 | nfs_sb_deactive(sb); | |
c6d00e63 TM |
855 | kfree(p); |
856 | } | |
857 | ||
858 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
859 | { | |
860 | if (p != NULL) | |
861 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
862 | } |
863 | ||
06f814a3 TM |
864 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
865 | { | |
06f814a3 TM |
866 | int ret; |
867 | ||
06f814a3 | 868 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
869 | return ret; |
870 | } | |
871 | ||
dc0b027d | 872 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
873 | { |
874 | int ret = 0; | |
dc0b027d TM |
875 | |
876 | if (open_mode & O_EXCL) | |
877 | goto out; | |
878 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 879 | case FMODE_READ: |
88069f77 TM |
880 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
881 | && state->n_rdonly != 0; | |
6ee41268 TM |
882 | break; |
883 | case FMODE_WRITE: | |
88069f77 TM |
884 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
885 | && state->n_wronly != 0; | |
6ee41268 TM |
886 | break; |
887 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
888 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
889 | && state->n_rdwr != 0; | |
6ee41268 | 890 | } |
dc0b027d | 891 | out: |
6ee41268 TM |
892 | return ret; |
893 | } | |
894 | ||
dc0b027d | 895 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 896 | { |
dc0b027d | 897 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 898 | return 0; |
15c831bf | 899 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 900 | return 0; |
b7391f44 | 901 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
902 | return 1; |
903 | } | |
904 | ||
dc0b027d | 905 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 906 | { |
dc0b027d | 907 | switch (fmode) { |
e7616923 TM |
908 | case FMODE_WRITE: |
909 | state->n_wronly++; | |
910 | break; | |
911 | case FMODE_READ: | |
912 | state->n_rdonly++; | |
913 | break; | |
914 | case FMODE_READ|FMODE_WRITE: | |
915 | state->n_rdwr++; | |
916 | } | |
dc0b027d | 917 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
918 | } |
919 | ||
dc0b027d | 920 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
921 | { |
922 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
923 | memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data)); | |
924 | memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data)); | |
dc0b027d | 925 | switch (fmode) { |
003707c7 TM |
926 | case FMODE_READ: |
927 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
928 | break; | |
929 | case FMODE_WRITE: | |
930 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
931 | break; | |
932 | case FMODE_READ|FMODE_WRITE: | |
933 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
934 | } | |
e7616923 TM |
935 | } |
936 | ||
dc0b027d | 937 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 938 | { |
8bda4e4c | 939 | write_seqlock(&state->seqlock); |
dc0b027d | 940 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 941 | write_sequnlock(&state->seqlock); |
003707c7 TM |
942 | } |
943 | ||
dc0b027d | 944 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 945 | { |
8bda4e4c TM |
946 | /* |
947 | * Protect the call to nfs4_state_set_mode_locked and | |
948 | * serialise the stateid update | |
949 | */ | |
950 | write_seqlock(&state->seqlock); | |
003707c7 TM |
951 | if (deleg_stateid != NULL) { |
952 | memcpy(state->stateid.data, deleg_stateid->data, sizeof(state->stateid.data)); | |
953 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
954 | } | |
955 | if (open_stateid != NULL) | |
dc0b027d | 956 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
957 | write_sequnlock(&state->seqlock); |
958 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 959 | update_open_stateflags(state, fmode); |
ec073428 | 960 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
961 | } |
962 | ||
dc0b027d | 963 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
964 | { |
965 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
966 | struct nfs_delegation *deleg_cur; | |
967 | int ret = 0; | |
968 | ||
dc0b027d | 969 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
970 | |
971 | rcu_read_lock(); | |
972 | deleg_cur = rcu_dereference(nfsi->delegation); | |
973 | if (deleg_cur == NULL) | |
974 | goto no_delegation; | |
975 | ||
976 | spin_lock(&deleg_cur->lock); | |
977 | if (nfsi->delegation != deleg_cur || | |
dc0b027d | 978 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
979 | goto no_delegation_unlock; |
980 | ||
981 | if (delegation == NULL) | |
982 | delegation = &deleg_cur->stateid; | |
983 | else if (memcmp(deleg_cur->stateid.data, delegation->data, NFS4_STATEID_SIZE) != 0) | |
984 | goto no_delegation_unlock; | |
985 | ||
b7391f44 | 986 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 987 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
988 | ret = 1; |
989 | no_delegation_unlock: | |
990 | spin_unlock(&deleg_cur->lock); | |
991 | no_delegation: | |
992 | rcu_read_unlock(); | |
993 | ||
994 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 995 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
996 | ret = 1; |
997 | } | |
998 | ||
999 | return ret; | |
1000 | } | |
1001 | ||
1002 | ||
dc0b027d | 1003 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1004 | { |
1005 | struct nfs_delegation *delegation; | |
1006 | ||
1007 | rcu_read_lock(); | |
1008 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1009 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1010 | rcu_read_unlock(); |
1011 | return; | |
1012 | } | |
1013 | rcu_read_unlock(); | |
1014 | nfs_inode_return_delegation(inode); | |
1015 | } | |
1016 | ||
6ee41268 | 1017 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1018 | { |
1019 | struct nfs4_state *state = opendata->state; | |
1020 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1021 | struct nfs_delegation *delegation; | |
dc0b027d TM |
1022 | int open_mode = opendata->o_arg.open_flags & O_EXCL; |
1023 | fmode_t fmode = opendata->o_arg.fmode; | |
aac00a8d TM |
1024 | nfs4_stateid stateid; |
1025 | int ret = -EAGAIN; | |
1026 | ||
aac00a8d | 1027 | for (;;) { |
dc0b027d | 1028 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 1029 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
1030 | if (can_open_cached(state, fmode, open_mode)) { |
1031 | update_open_stateflags(state, fmode); | |
6ee41268 | 1032 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
1033 | goto out_return_state; |
1034 | } | |
1035 | spin_unlock(&state->owner->so_lock); | |
1036 | } | |
34310430 TM |
1037 | rcu_read_lock(); |
1038 | delegation = rcu_dereference(nfsi->delegation); | |
1039 | if (delegation == NULL || | |
dc0b027d | 1040 | !can_open_delegated(delegation, fmode)) { |
34310430 | 1041 | rcu_read_unlock(); |
aac00a8d | 1042 | break; |
34310430 | 1043 | } |
aac00a8d TM |
1044 | /* Save the delegation */ |
1045 | memcpy(stateid.data, delegation->stateid.data, sizeof(stateid.data)); | |
1046 | rcu_read_unlock(); | |
af22f94a | 1047 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
1048 | if (ret != 0) |
1049 | goto out; | |
1050 | ret = -EAGAIN; | |
34310430 TM |
1051 | |
1052 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1053 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1054 | goto out_return_state; |
aac00a8d | 1055 | } |
aac00a8d TM |
1056 | out: |
1057 | return ERR_PTR(ret); | |
1058 | out_return_state: | |
1059 | atomic_inc(&state->count); | |
1060 | return state; | |
1061 | } | |
1062 | ||
24ac23ab TM |
1063 | static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) |
1064 | { | |
1065 | struct inode *inode; | |
1066 | struct nfs4_state *state = NULL; | |
003707c7 | 1067 | struct nfs_delegation *delegation; |
1b370bc2 | 1068 | int ret; |
24ac23ab | 1069 | |
aac00a8d | 1070 | if (!data->rpc_done) { |
6ee41268 | 1071 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1072 | goto out; |
1073 | } | |
1074 | ||
1b370bc2 | 1075 | ret = -EAGAIN; |
24ac23ab | 1076 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1077 | goto err; |
24ac23ab | 1078 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 1079 | ret = PTR_ERR(inode); |
03f28e3a | 1080 | if (IS_ERR(inode)) |
1b370bc2 TM |
1081 | goto err; |
1082 | ret = -ENOMEM; | |
24ac23ab TM |
1083 | state = nfs4_get_open_state(inode, data->owner); |
1084 | if (state == NULL) | |
1b370bc2 | 1085 | goto err_put_inode; |
549d6ed5 | 1086 | if (data->o_res.delegation_type != 0) { |
549d6ed5 TM |
1087 | int delegation_flags = 0; |
1088 | ||
003707c7 TM |
1089 | rcu_read_lock(); |
1090 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
1091 | if (delegation) | |
1092 | delegation_flags = delegation->flags; | |
1093 | rcu_read_unlock(); | |
15c831bf | 1094 | if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) |
549d6ed5 TM |
1095 | nfs_inode_set_delegation(state->inode, |
1096 | data->owner->so_cred, | |
1097 | &data->o_res); | |
1098 | else | |
1099 | nfs_inode_reclaim_delegation(state->inode, | |
1100 | data->owner->so_cred, | |
1101 | &data->o_res); | |
1102 | } | |
34310430 TM |
1103 | |
1104 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
dc0b027d | 1105 | data->o_arg.fmode); |
24ac23ab | 1106 | iput(inode); |
aac00a8d | 1107 | out: |
24ac23ab | 1108 | return state; |
1b370bc2 TM |
1109 | err_put_inode: |
1110 | iput(inode); | |
1111 | err: | |
1112 | return ERR_PTR(ret); | |
24ac23ab TM |
1113 | } |
1114 | ||
864472e9 TM |
1115 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1116 | { | |
1117 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1118 | struct nfs_open_context *ctx; | |
1119 | ||
1120 | spin_lock(&state->inode->i_lock); | |
1121 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1122 | if (ctx->state != state) | |
1123 | continue; | |
1124 | get_nfs_open_context(ctx); | |
1125 | spin_unlock(&state->inode->i_lock); | |
1126 | return ctx; | |
1127 | } | |
1128 | spin_unlock(&state->inode->i_lock); | |
1129 | return ERR_PTR(-ENOENT); | |
1130 | } | |
1131 | ||
6f220ed5 TM |
1132 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
1133 | { | |
1134 | struct nfs4_opendata *opendata; | |
1135 | ||
3d4ff43d | 1136 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, NULL, GFP_NOFS); |
6f220ed5 TM |
1137 | if (opendata == NULL) |
1138 | return ERR_PTR(-ENOMEM); | |
1139 | opendata->state = state; | |
1140 | atomic_inc(&state->count); | |
1141 | return opendata; | |
1142 | } | |
1143 | ||
dc0b027d | 1144 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1145 | { |
2ced46c2 | 1146 | struct nfs4_state *newstate; |
864472e9 TM |
1147 | int ret; |
1148 | ||
dc0b027d TM |
1149 | opendata->o_arg.open_flags = 0; |
1150 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1151 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1152 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1153 | nfs4_init_opendata_res(opendata); | |
b257957e | 1154 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1155 | if (ret != 0) |
1156 | return ret; | |
2ced46c2 | 1157 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1158 | if (IS_ERR(newstate)) |
1159 | return PTR_ERR(newstate); | |
643168c2 | 1160 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1161 | *res = newstate; |
864472e9 TM |
1162 | return 0; |
1163 | } | |
1164 | ||
1165 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1166 | { | |
864472e9 | 1167 | struct nfs4_state *newstate; |
864472e9 TM |
1168 | int ret; |
1169 | ||
1170 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1171 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
1172 | smp_rmb(); |
1173 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1174 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1175 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1176 | if (ret != 0) |
1177 | return ret; | |
2ced46c2 TM |
1178 | if (newstate != state) |
1179 | return -ESTALE; | |
864472e9 TM |
1180 | } |
1181 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1182 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1183 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1184 | if (ret != 0) |
1185 | return ret; | |
2ced46c2 TM |
1186 | if (newstate != state) |
1187 | return -ESTALE; | |
864472e9 TM |
1188 | } |
1189 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1190 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1191 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1192 | if (ret != 0) |
1193 | return ret; | |
2ced46c2 TM |
1194 | if (newstate != state) |
1195 | return -ESTALE; | |
864472e9 | 1196 | } |
1ac7e2fd TM |
1197 | /* |
1198 | * We may have performed cached opens for all three recoveries. | |
1199 | * Check if we need to update the current stateid. | |
1200 | */ | |
1201 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
1202 | memcmp(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)) != 0) { | |
8bda4e4c | 1203 | write_seqlock(&state->seqlock); |
1ac7e2fd TM |
1204 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
1205 | memcpy(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)); | |
8bda4e4c | 1206 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1207 | } |
864472e9 TM |
1208 | return 0; |
1209 | } | |
1210 | ||
1da177e4 LT |
1211 | /* |
1212 | * OPEN_RECLAIM: | |
1213 | * reclaim state on the server after a reboot. | |
1da177e4 | 1214 | */ |
539cd03a | 1215 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1216 | { |
1ac7e2fd | 1217 | struct nfs_delegation *delegation; |
864472e9 | 1218 | struct nfs4_opendata *opendata; |
dc0b027d | 1219 | fmode_t delegation_type = 0; |
1da177e4 LT |
1220 | int status; |
1221 | ||
6f220ed5 TM |
1222 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1223 | if (IS_ERR(opendata)) | |
1224 | return PTR_ERR(opendata); | |
864472e9 TM |
1225 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
1226 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
1227 | rcu_read_lock(); |
1228 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1229 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1230 | delegation_type = delegation->type; |
1ac7e2fd | 1231 | rcu_read_unlock(); |
864472e9 TM |
1232 | opendata->o_arg.u.delegation_type = delegation_type; |
1233 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1234 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1235 | return status; |
1236 | } | |
1237 | ||
539cd03a | 1238 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1239 | { |
1240 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1241 | struct nfs4_exception exception = { }; | |
1242 | int err; | |
1243 | do { | |
539cd03a | 1244 | err = _nfs4_do_open_reclaim(ctx, state); |
168667c4 | 1245 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1246 | break; |
1247 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1248 | } while (exception.retry); |
1249 | return err; | |
1250 | } | |
1251 | ||
864472e9 TM |
1252 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1253 | { | |
1254 | struct nfs_open_context *ctx; | |
1255 | int ret; | |
1256 | ||
1257 | ctx = nfs4_state_find_open_context(state); | |
1258 | if (IS_ERR(ctx)) | |
1259 | return PTR_ERR(ctx); | |
539cd03a | 1260 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1261 | put_nfs_open_context(ctx); |
1262 | return ret; | |
1263 | } | |
1264 | ||
13437e12 | 1265 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 1266 | { |
e56e0b78 | 1267 | struct nfs4_opendata *opendata; |
864472e9 | 1268 | int ret; |
1da177e4 | 1269 | |
6f220ed5 TM |
1270 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1271 | if (IS_ERR(opendata)) | |
1272 | return PTR_ERR(opendata); | |
e56e0b78 | 1273 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
13437e12 | 1274 | memcpy(opendata->o_arg.u.delegation.data, stateid->data, |
e56e0b78 | 1275 | sizeof(opendata->o_arg.u.delegation.data)); |
864472e9 | 1276 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 1277 | nfs4_opendata_put(opendata); |
864472e9 | 1278 | return ret; |
1da177e4 LT |
1279 | } |
1280 | ||
13437e12 | 1281 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
1282 | { |
1283 | struct nfs4_exception exception = { }; | |
539cd03a | 1284 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
1285 | int err; |
1286 | do { | |
13437e12 | 1287 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
1288 | switch (err) { |
1289 | case 0: | |
965b5d67 TM |
1290 | case -ENOENT: |
1291 | case -ESTALE: | |
1292 | goto out; | |
bcfa49f6 RL |
1293 | case -NFS4ERR_BADSESSION: |
1294 | case -NFS4ERR_BADSLOT: | |
1295 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1296 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1297 | case -NFS4ERR_DEADSESSION: | |
0400a6b0 | 1298 | nfs4_schedule_session_recovery(server->nfs_client->cl_session); |
bcfa49f6 | 1299 | goto out; |
1da177e4 LT |
1300 | case -NFS4ERR_STALE_CLIENTID: |
1301 | case -NFS4ERR_STALE_STATEID: | |
1302 | case -NFS4ERR_EXPIRED: | |
1303 | /* Don't recall a delegation if it was lost */ | |
0400a6b0 | 1304 | nfs4_schedule_lease_recovery(server->nfs_client); |
965b5d67 TM |
1305 | goto out; |
1306 | case -ERESTARTSYS: | |
1307 | /* | |
1308 | * The show must go on: exit, but mark the | |
1309 | * stateid as needing recovery. | |
1310 | */ | |
1311 | case -NFS4ERR_ADMIN_REVOKED: | |
1312 | case -NFS4ERR_BAD_STATEID: | |
0400a6b0 | 1313 | nfs4_schedule_stateid_recovery(server, state); |
168667c4 TM |
1314 | case -EKEYEXPIRED: |
1315 | /* | |
1316 | * User RPCSEC_GSS context has expired. | |
1317 | * We cannot recover this stateid now, so | |
1318 | * skip it and allow recovery thread to | |
1319 | * proceed. | |
1320 | */ | |
965b5d67 TM |
1321 | case -ENOMEM: |
1322 | err = 0; | |
1323 | goto out; | |
1da177e4 LT |
1324 | } |
1325 | err = nfs4_handle_exception(server, err, &exception); | |
1326 | } while (exception.retry); | |
965b5d67 | 1327 | out: |
1da177e4 LT |
1328 | return err; |
1329 | } | |
1330 | ||
cdd4e68b TM |
1331 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1332 | { | |
1333 | struct nfs4_opendata *data = calldata; | |
1334 | ||
1335 | data->rpc_status = task->tk_status; | |
26e976a8 | 1336 | if (data->rpc_status == 0) { |
cdd4e68b TM |
1337 | memcpy(data->o_res.stateid.data, data->c_res.stateid.data, |
1338 | sizeof(data->o_res.stateid.data)); | |
bb22629e | 1339 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1340 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1341 | data->rpc_done = 1; |
26e976a8 | 1342 | } |
cdd4e68b TM |
1343 | } |
1344 | ||
1345 | static void nfs4_open_confirm_release(void *calldata) | |
1346 | { | |
1347 | struct nfs4_opendata *data = calldata; | |
1348 | struct nfs4_state *state = NULL; | |
1349 | ||
1350 | /* If this request hasn't been cancelled, do nothing */ | |
1351 | if (data->cancelled == 0) | |
1352 | goto out_free; | |
1353 | /* In case of error, no cleanup! */ | |
3e309914 | 1354 | if (!data->rpc_done) |
cdd4e68b | 1355 | goto out_free; |
cdd4e68b | 1356 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1357 | if (!IS_ERR(state)) |
643168c2 | 1358 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1359 | out_free: |
c6d00e63 | 1360 | nfs4_opendata_put(data); |
cdd4e68b TM |
1361 | } |
1362 | ||
1363 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1364 | .rpc_call_done = nfs4_open_confirm_done, |
1365 | .rpc_release = nfs4_open_confirm_release, | |
1366 | }; | |
1367 | ||
1368 | /* | |
1369 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1370 | */ | |
1371 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1372 | { | |
1373 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1374 | struct rpc_task *task; | |
5138fde0 TM |
1375 | struct rpc_message msg = { |
1376 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1377 | .rpc_argp = &data->c_arg, | |
1378 | .rpc_resp = &data->c_res, | |
1379 | .rpc_cred = data->owner->so_cred, | |
1380 | }; | |
c970aa85 TM |
1381 | struct rpc_task_setup task_setup_data = { |
1382 | .rpc_client = server->client, | |
5138fde0 | 1383 | .rpc_message = &msg, |
c970aa85 TM |
1384 | .callback_ops = &nfs4_open_confirm_ops, |
1385 | .callback_data = data, | |
101070ca | 1386 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1387 | .flags = RPC_TASK_ASYNC, |
1388 | }; | |
1da177e4 LT |
1389 | int status; |
1390 | ||
c6d00e63 | 1391 | kref_get(&data->kref); |
3e309914 TM |
1392 | data->rpc_done = 0; |
1393 | data->rpc_status = 0; | |
5138fde0 | 1394 | data->timestamp = jiffies; |
c970aa85 | 1395 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1396 | if (IS_ERR(task)) |
cdd4e68b | 1397 | return PTR_ERR(task); |
cdd4e68b TM |
1398 | status = nfs4_wait_for_completion_rpc_task(task); |
1399 | if (status != 0) { | |
1400 | data->cancelled = 1; | |
1401 | smp_wmb(); | |
1402 | } else | |
1403 | status = data->rpc_status; | |
e6b3c4db | 1404 | rpc_put_task(task); |
1da177e4 LT |
1405 | return status; |
1406 | } | |
1407 | ||
24ac23ab | 1408 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1409 | { |
24ac23ab TM |
1410 | struct nfs4_opendata *data = calldata; |
1411 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 1412 | |
24ac23ab TM |
1413 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
1414 | return; | |
aac00a8d TM |
1415 | /* |
1416 | * Check if we still need to send an OPEN call, or if we can use | |
1417 | * a delegation instead. | |
1418 | */ | |
1419 | if (data->state != NULL) { | |
1420 | struct nfs_delegation *delegation; | |
1421 | ||
dc0b027d | 1422 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1423 | goto out_no_action; |
aac00a8d TM |
1424 | rcu_read_lock(); |
1425 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
1426 | if (delegation != NULL && | |
15c831bf | 1427 | test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) == 0) { |
aac00a8d | 1428 | rcu_read_unlock(); |
6ee41268 | 1429 | goto out_no_action; |
aac00a8d TM |
1430 | } |
1431 | rcu_read_unlock(); | |
1432 | } | |
24ac23ab | 1433 | /* Update sequence id. */ |
9f958ab8 | 1434 | data->o_arg.id = sp->so_owner_id.id; |
1f0e890d | 1435 | data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; |
6f220ed5 | 1436 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 1437 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
6f220ed5 TM |
1438 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1439 | } | |
26e976a8 | 1440 | data->timestamp = jiffies; |
035168ab | 1441 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c AA |
1442 | &data->o_arg.seq_args, |
1443 | &data->o_res.seq_res, 1, task)) | |
1444 | return; | |
5138fde0 | 1445 | rpc_call_start(task); |
6ee41268 TM |
1446 | return; |
1447 | out_no_action: | |
1448 | task->tk_action = NULL; | |
1449 | ||
24ac23ab | 1450 | } |
1da177e4 | 1451 | |
b257957e AB |
1452 | static void nfs4_recover_open_prepare(struct rpc_task *task, void *calldata) |
1453 | { | |
1454 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
1455 | nfs4_open_prepare(task, calldata); | |
1456 | } | |
1457 | ||
24ac23ab TM |
1458 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1459 | { | |
1460 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1461 | |
24ac23ab | 1462 | data->rpc_status = task->tk_status; |
d898528c | 1463 | |
14516c3a TM |
1464 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1465 | return; | |
d898528c | 1466 | |
24ac23ab TM |
1467 | if (task->tk_status == 0) { |
1468 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1469 | case S_IFREG: |
1470 | break; | |
1471 | case S_IFLNK: | |
24ac23ab | 1472 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1473 | break; |
1474 | case S_IFDIR: | |
24ac23ab | 1475 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1476 | break; |
1477 | default: | |
24ac23ab | 1478 | data->rpc_status = -ENOTDIR; |
6f926b5b | 1479 | } |
26e976a8 | 1480 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1481 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1482 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1483 | } |
3e309914 | 1484 | data->rpc_done = 1; |
24ac23ab | 1485 | } |
6f926b5b | 1486 | |
24ac23ab TM |
1487 | static void nfs4_open_release(void *calldata) |
1488 | { | |
1489 | struct nfs4_opendata *data = calldata; | |
1490 | struct nfs4_state *state = NULL; | |
1491 | ||
1492 | /* If this request hasn't been cancelled, do nothing */ | |
1493 | if (data->cancelled == 0) | |
1494 | goto out_free; | |
1495 | /* In case of error, no cleanup! */ | |
3e309914 | 1496 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1497 | goto out_free; |
1498 | /* In case we need an open_confirm, no cleanup! */ | |
1499 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1500 | goto out_free; | |
24ac23ab | 1501 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1502 | if (!IS_ERR(state)) |
643168c2 | 1503 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1504 | out_free: |
c6d00e63 | 1505 | nfs4_opendata_put(data); |
24ac23ab TM |
1506 | } |
1507 | ||
1508 | static const struct rpc_call_ops nfs4_open_ops = { | |
1509 | .rpc_call_prepare = nfs4_open_prepare, | |
1510 | .rpc_call_done = nfs4_open_done, | |
1511 | .rpc_release = nfs4_open_release, | |
1512 | }; | |
1513 | ||
b257957e AB |
1514 | static const struct rpc_call_ops nfs4_recover_open_ops = { |
1515 | .rpc_call_prepare = nfs4_recover_open_prepare, | |
1516 | .rpc_call_done = nfs4_open_done, | |
1517 | .rpc_release = nfs4_open_release, | |
1518 | }; | |
1519 | ||
1520 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) | |
24ac23ab TM |
1521 | { |
1522 | struct inode *dir = data->dir->d_inode; | |
1523 | struct nfs_server *server = NFS_SERVER(dir); | |
1524 | struct nfs_openargs *o_arg = &data->o_arg; | |
1525 | struct nfs_openres *o_res = &data->o_res; | |
1526 | struct rpc_task *task; | |
5138fde0 TM |
1527 | struct rpc_message msg = { |
1528 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1529 | .rpc_argp = o_arg, | |
1530 | .rpc_resp = o_res, | |
1531 | .rpc_cred = data->owner->so_cred, | |
1532 | }; | |
c970aa85 TM |
1533 | struct rpc_task_setup task_setup_data = { |
1534 | .rpc_client = server->client, | |
5138fde0 | 1535 | .rpc_message = &msg, |
c970aa85 TM |
1536 | .callback_ops = &nfs4_open_ops, |
1537 | .callback_data = data, | |
101070ca | 1538 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1539 | .flags = RPC_TASK_ASYNC, |
1540 | }; | |
24ac23ab TM |
1541 | int status; |
1542 | ||
c6d00e63 | 1543 | kref_get(&data->kref); |
3e309914 TM |
1544 | data->rpc_done = 0; |
1545 | data->rpc_status = 0; | |
2ced46c2 | 1546 | data->cancelled = 0; |
b257957e AB |
1547 | if (isrecover) |
1548 | task_setup_data.callback_ops = &nfs4_recover_open_ops; | |
c970aa85 | 1549 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1550 | if (IS_ERR(task)) |
1551 | return PTR_ERR(task); | |
1552 | status = nfs4_wait_for_completion_rpc_task(task); | |
1553 | if (status != 0) { | |
1554 | data->cancelled = 1; | |
1555 | smp_wmb(); | |
1556 | } else | |
1557 | status = data->rpc_status; | |
1558 | rpc_put_task(task); | |
1559 | ||
1560 | return status; | |
1561 | } | |
1562 | ||
1563 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1564 | { | |
1565 | struct inode *dir = data->dir->d_inode; | |
1566 | struct nfs_openres *o_res = &data->o_res; | |
1567 | int status; | |
1568 | ||
1569 | status = nfs4_run_open_task(data, 1); | |
1570 | if (status != 0 || !data->rpc_done) | |
1571 | return status; | |
1572 | ||
1573 | nfs_refresh_inode(dir, o_res->dir_attr); | |
1574 | ||
1575 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { | |
1576 | status = _nfs4_proc_open_confirm(data); | |
1577 | if (status != 0) | |
1578 | return status; | |
1579 | } | |
1580 | ||
1581 | return status; | |
1582 | } | |
1583 | ||
1584 | /* | |
1585 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1586 | */ | |
1587 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1588 | { | |
1589 | struct inode *dir = data->dir->d_inode; | |
1590 | struct nfs_server *server = NFS_SERVER(dir); | |
1591 | struct nfs_openargs *o_arg = &data->o_arg; | |
1592 | struct nfs_openres *o_res = &data->o_res; | |
1593 | int status; | |
1594 | ||
1595 | status = nfs4_run_open_task(data, 0); | |
3e309914 | 1596 | if (status != 0 || !data->rpc_done) |
24ac23ab TM |
1597 | return status; |
1598 | ||
56ae19f3 TM |
1599 | if (o_arg->open_flags & O_CREAT) { |
1600 | update_changeattr(dir, &o_res->cinfo); | |
1601 | nfs_post_op_update_inode(dir, o_res->dir_attr); | |
1602 | } else | |
1603 | nfs_refresh_inode(dir, o_res->dir_attr); | |
0df5dd4a TM |
1604 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1605 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1606 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1607 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1608 | if (status != 0) |
24ac23ab | 1609 | return status; |
1da177e4 LT |
1610 | } |
1611 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1612 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1613 | return 0; |
1da177e4 LT |
1614 | } |
1615 | ||
d83217c1 | 1616 | static int nfs4_client_recover_expired_lease(struct nfs_client *clp) |
58d9714a | 1617 | { |
a78cb57a | 1618 | unsigned int loop; |
6b30954e | 1619 | int ret; |
58d9714a | 1620 | |
a78cb57a | 1621 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { |
65de872e | 1622 | ret = nfs4_wait_clnt_recover(clp); |
6b30954e | 1623 | if (ret != 0) |
a78cb57a | 1624 | break; |
e598d843 TM |
1625 | if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) && |
1626 | !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state)) | |
6b30954e | 1627 | break; |
0400a6b0 | 1628 | nfs4_schedule_state_manager(clp); |
a78cb57a | 1629 | ret = -EIO; |
6b30954e | 1630 | } |
a78cb57a | 1631 | return ret; |
58d9714a TM |
1632 | } |
1633 | ||
d83217c1 AA |
1634 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1635 | { | |
1636 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1637 | } | |
1638 | ||
1da177e4 LT |
1639 | /* |
1640 | * OPEN_EXPIRED: | |
1641 | * reclaim state on the server after a network partition. | |
1642 | * Assumes caller holds the appropriate lock | |
1643 | */ | |
539cd03a | 1644 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1645 | { |
e56e0b78 | 1646 | struct nfs4_opendata *opendata; |
864472e9 | 1647 | int ret; |
1da177e4 | 1648 | |
6f220ed5 TM |
1649 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1650 | if (IS_ERR(opendata)) | |
1651 | return PTR_ERR(opendata); | |
864472e9 | 1652 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1653 | if (ret == -ESTALE) |
3d4ff43d | 1654 | d_drop(ctx->dentry); |
c6d00e63 | 1655 | nfs4_opendata_put(opendata); |
864472e9 | 1656 | return ret; |
1da177e4 LT |
1657 | } |
1658 | ||
a9ed2e25 | 1659 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1660 | { |
539cd03a | 1661 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1662 | struct nfs4_exception exception = { }; |
1663 | int err; | |
1664 | ||
1665 | do { | |
539cd03a | 1666 | err = _nfs4_open_expired(ctx, state); |
a9ed2e25 TM |
1667 | switch (err) { |
1668 | default: | |
1669 | goto out; | |
1670 | case -NFS4ERR_GRACE: | |
1671 | case -NFS4ERR_DELAY: | |
1672 | nfs4_handle_exception(server, err, &exception); | |
1673 | err = 0; | |
1674 | } | |
202b50dc | 1675 | } while (exception.retry); |
a9ed2e25 | 1676 | out: |
202b50dc TM |
1677 | return err; |
1678 | } | |
1679 | ||
1da177e4 LT |
1680 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1681 | { | |
1da177e4 | 1682 | struct nfs_open_context *ctx; |
864472e9 | 1683 | int ret; |
1da177e4 | 1684 | |
864472e9 TM |
1685 | ctx = nfs4_state_find_open_context(state); |
1686 | if (IS_ERR(ctx)) | |
1687 | return PTR_ERR(ctx); | |
539cd03a | 1688 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1689 | put_nfs_open_context(ctx); |
1690 | return ret; | |
1da177e4 LT |
1691 | } |
1692 | ||
f062eb6c BS |
1693 | #if defined(CONFIG_NFS_V4_1) |
1694 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
1695 | { | |
1696 | int status; | |
1697 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1698 | ||
1699 | status = nfs41_test_stateid(server, state); | |
1700 | if (status == NFS_OK) | |
1701 | return 0; | |
1702 | nfs41_free_stateid(server, state); | |
1703 | return nfs4_open_expired(sp, state); | |
1704 | } | |
1705 | #endif | |
1706 | ||
aa53ed54 JL |
1707 | /* |
1708 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1709 | * fields corresponding to attributes that were used to store the verifier. | |
1710 | * Make sure we clobber those fields in the later setattr call | |
1711 | */ | |
1712 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1713 | { | |
1714 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1715 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1716 | sattr->ia_valid |= ATTR_ATIME; | |
1717 | ||
1718 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1719 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1720 | sattr->ia_valid |= ATTR_MTIME; | |
1721 | } | |
1722 | ||
1da177e4 | 1723 | /* |
24ac23ab | 1724 | * Returns a referenced nfs4_state |
1da177e4 | 1725 | */ |
82a2c1b7 | 1726 | static int _nfs4_do_open(struct inode *dir, struct dentry *dentry, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res) |
1da177e4 LT |
1727 | { |
1728 | struct nfs4_state_owner *sp; | |
1729 | struct nfs4_state *state = NULL; | |
1730 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1731 | struct nfs4_opendata *opendata; |
aac00a8d | 1732 | int status; |
1da177e4 LT |
1733 | |
1734 | /* Protect against reboot recovery conflicts */ | |
1da177e4 LT |
1735 | status = -ENOMEM; |
1736 | if (!(sp = nfs4_get_state_owner(server, cred))) { | |
1737 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); | |
1738 | goto out_err; | |
1739 | } | |
58d9714a TM |
1740 | status = nfs4_recover_expired_lease(server); |
1741 | if (status != 0) | |
b4454fe1 | 1742 | goto err_put_state_owner; |
82a2c1b7 AV |
1743 | if (dentry->d_inode != NULL) |
1744 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 1745 | status = -ENOMEM; |
82a2c1b7 | 1746 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, GFP_KERNEL); |
e56e0b78 | 1747 | if (opendata == NULL) |
95d35cb4 | 1748 | goto err_put_state_owner; |
1da177e4 | 1749 | |
82a2c1b7 AV |
1750 | if (dentry->d_inode != NULL) |
1751 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 1752 | |
24ac23ab | 1753 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1754 | if (status != 0) |
c6d00e63 | 1755 | goto err_opendata_put; |
1da177e4 | 1756 | |
24ac23ab | 1757 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1758 | status = PTR_ERR(state); |
1759 | if (IS_ERR(state)) | |
c6d00e63 | 1760 | goto err_opendata_put; |
0df5dd4a | 1761 | if (server->caps & NFS_CAP_POSIX_LOCK) |
8e469ebd | 1762 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); |
0ab64e0e TM |
1763 | |
1764 | if (opendata->o_arg.open_flags & O_EXCL) { | |
1765 | nfs4_exclusive_attrset(opendata, sattr); | |
1766 | ||
1767 | nfs_fattr_init(opendata->o_res.f_attr); | |
1768 | status = nfs4_do_setattr(state->inode, cred, | |
1769 | opendata->o_res.f_attr, sattr, | |
1770 | state); | |
1771 | if (status == 0) | |
1772 | nfs_setattr_update_inode(state->inode, sattr); | |
1773 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
1774 | } | |
c6d00e63 | 1775 | nfs4_opendata_put(opendata); |
1da177e4 | 1776 | nfs4_put_state_owner(sp); |
1da177e4 LT |
1777 | *res = state; |
1778 | return 0; | |
c6d00e63 TM |
1779 | err_opendata_put: |
1780 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
1781 | err_put_state_owner: |
1782 | nfs4_put_state_owner(sp); | |
1da177e4 | 1783 | out_err: |
1da177e4 LT |
1784 | *res = NULL; |
1785 | return status; | |
1786 | } | |
1787 | ||
1788 | ||
82a2c1b7 | 1789 | static struct nfs4_state *nfs4_do_open(struct inode *dir, struct dentry *dentry, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred) |
1da177e4 LT |
1790 | { |
1791 | struct nfs4_exception exception = { }; | |
1792 | struct nfs4_state *res; | |
1793 | int status; | |
1794 | ||
1795 | do { | |
82a2c1b7 | 1796 | status = _nfs4_do_open(dir, dentry, fmode, flags, sattr, cred, &res); |
1da177e4 LT |
1797 | if (status == 0) |
1798 | break; | |
1799 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1800 | * book-keeping w.r.t. state-changing operations | |
1801 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1802 | * It is actually a sign of a bug on the client or on the server. | |
1803 | * | |
1804 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1805 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1806 | * have unhashed the old state_owner for us, and that we can |
1807 | * therefore safely retry using a new one. We should still warn | |
1808 | * the user though... | |
1809 | */ | |
1810 | if (status == -NFS4ERR_BAD_SEQID) { | |
6f43ddcc TM |
1811 | printk(KERN_WARNING "NFS: v4 server %s " |
1812 | " returned a bad sequence-id error!\n", | |
1813 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1814 | exception.retry = 1; |
1815 | continue; | |
1816 | } | |
550f5747 TM |
1817 | /* |
1818 | * BAD_STATEID on OPEN means that the server cancelled our | |
1819 | * state before it received the OPEN_CONFIRM. | |
1820 | * Recover by retrying the request as per the discussion | |
1821 | * on Page 181 of RFC3530. | |
1822 | */ | |
1823 | if (status == -NFS4ERR_BAD_STATEID) { | |
1824 | exception.retry = 1; | |
1825 | continue; | |
1826 | } | |
aac00a8d TM |
1827 | if (status == -EAGAIN) { |
1828 | /* We must have found a delegation */ | |
1829 | exception.retry = 1; | |
1830 | continue; | |
1831 | } | |
1da177e4 LT |
1832 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1833 | status, &exception)); | |
1834 | } while (exception.retry); | |
1835 | return res; | |
1836 | } | |
1837 | ||
659bfcd6 TM |
1838 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1839 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1840 | struct nfs4_state *state) | |
1da177e4 | 1841 | { |
3e4f6290 | 1842 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1843 | struct nfs_setattrargs arg = { |
3e4f6290 | 1844 | .fh = NFS_FH(inode), |
1da177e4 LT |
1845 | .iap = sattr, |
1846 | .server = server, | |
1847 | .bitmask = server->attr_bitmask, | |
1848 | }; | |
1849 | struct nfs_setattrres res = { | |
1850 | .fattr = fattr, | |
1851 | .server = server, | |
1852 | }; | |
1853 | struct rpc_message msg = { | |
659bfcd6 TM |
1854 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
1855 | .rpc_argp = &arg, | |
1856 | .rpc_resp = &res, | |
1857 | .rpc_cred = cred, | |
1da177e4 | 1858 | }; |
26e976a8 | 1859 | unsigned long timestamp = jiffies; |
65e4308d | 1860 | int status; |
1da177e4 | 1861 | |
0e574af1 | 1862 | nfs_fattr_init(fattr); |
1da177e4 | 1863 | |
3e4f6290 TM |
1864 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) { |
1865 | /* Use that stateid */ | |
1866 | } else if (state != NULL) { | |
77041ed9 | 1867 | nfs4_copy_stateid(&arg.stateid, state, current->files, current->tgid); |
08e9eac4 | 1868 | } else |
1da177e4 LT |
1869 | memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid)); |
1870 | ||
7c513058 | 1871 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
1872 | if (status == 0 && state != NULL) |
1873 | renew_lease(server, timestamp); | |
65e4308d | 1874 | return status; |
1da177e4 LT |
1875 | } |
1876 | ||
659bfcd6 TM |
1877 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1878 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1879 | struct nfs4_state *state) | |
1da177e4 | 1880 | { |
3e4f6290 | 1881 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
1882 | struct nfs4_exception exception = { }; |
1883 | int err; | |
1884 | do { | |
1885 | err = nfs4_handle_exception(server, | |
659bfcd6 | 1886 | _nfs4_do_setattr(inode, cred, fattr, sattr, state), |
1da177e4 LT |
1887 | &exception); |
1888 | } while (exception.retry); | |
1889 | return err; | |
1890 | } | |
1891 | ||
1892 | struct nfs4_closedata { | |
1893 | struct inode *inode; | |
1894 | struct nfs4_state *state; | |
1895 | struct nfs_closeargs arg; | |
1896 | struct nfs_closeres res; | |
516a6af6 | 1897 | struct nfs_fattr fattr; |
26e976a8 | 1898 | unsigned long timestamp; |
f7e8917a FI |
1899 | bool roc; |
1900 | u32 roc_barrier; | |
1da177e4 LT |
1901 | }; |
1902 | ||
963d8fe5 | 1903 | static void nfs4_free_closedata(void *data) |
9512135d | 1904 | { |
963d8fe5 TM |
1905 | struct nfs4_closedata *calldata = data; |
1906 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 1907 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 1908 | |
f7e8917a FI |
1909 | if (calldata->roc) |
1910 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
1911 | nfs4_put_open_state(calldata->state); |
1912 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 1913 | nfs4_put_state_owner(sp); |
643168c2 | 1914 | nfs_sb_deactive(sb); |
9512135d TM |
1915 | kfree(calldata); |
1916 | } | |
1917 | ||
88069f77 TM |
1918 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
1919 | fmode_t fmode) | |
1920 | { | |
1921 | spin_lock(&state->owner->so_lock); | |
1922 | if (!(fmode & FMODE_READ)) | |
1923 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1924 | if (!(fmode & FMODE_WRITE)) | |
1925 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1926 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1927 | spin_unlock(&state->owner->so_lock); | |
1928 | } | |
1929 | ||
963d8fe5 | 1930 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 1931 | { |
963d8fe5 | 1932 | struct nfs4_closedata *calldata = data; |
1da177e4 | 1933 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
1934 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
1935 | ||
14516c3a TM |
1936 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
1937 | return; | |
1da177e4 LT |
1938 | /* hmm. we are done with the inode, and in the process of freeing |
1939 | * the state_owner. we keep this around to process errors | |
1940 | */ | |
1da177e4 LT |
1941 | switch (task->tk_status) { |
1942 | case 0: | |
f7e8917a FI |
1943 | if (calldata->roc) |
1944 | pnfs_roc_set_barrier(state->inode, | |
1945 | calldata->roc_barrier); | |
45328c35 | 1946 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 1947 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
1948 | nfs4_close_clear_stateid_flags(state, |
1949 | calldata->arg.fmode); | |
1da177e4 LT |
1950 | break; |
1951 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
1952 | case -NFS4ERR_OLD_STATEID: |
1953 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 1954 | case -NFS4ERR_EXPIRED: |
dc0b027d | 1955 | if (calldata->arg.fmode == 0) |
9e33bed5 | 1956 | break; |
1da177e4 | 1957 | default: |
72211dbe TM |
1958 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
1959 | rpc_restart_call_prepare(task); | |
1da177e4 | 1960 | } |
72211dbe | 1961 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 1962 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
1da177e4 LT |
1963 | } |
1964 | ||
4ce70ada | 1965 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 1966 | { |
4ce70ada | 1967 | struct nfs4_closedata *calldata = data; |
9512135d | 1968 | struct nfs4_state *state = calldata->state; |
88069f77 | 1969 | int call_close = 0; |
9512135d | 1970 | |
963d8fe5 | 1971 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 1972 | return; |
003707c7 | 1973 | |
88069f77 TM |
1974 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
1975 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 1976 | spin_lock(&state->owner->so_lock); |
003707c7 | 1977 | /* Calculate the change in open mode */ |
e7616923 | 1978 | if (state->n_rdwr == 0) { |
003707c7 | 1979 | if (state->n_rdonly == 0) { |
88069f77 TM |
1980 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
1981 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
1982 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
1983 | } |
1984 | if (state->n_wronly == 0) { | |
88069f77 TM |
1985 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
1986 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
1987 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 1988 | } |
e7616923 | 1989 | } |
4cecb76f | 1990 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
1991 | |
1992 | if (!call_close) { | |
963d8fe5 TM |
1993 | /* Note: exit _without_ calling nfs4_close_done */ |
1994 | task->tk_action = NULL; | |
9512135d TM |
1995 | return; |
1996 | } | |
88069f77 | 1997 | |
f7e8917a | 1998 | if (calldata->arg.fmode == 0) { |
88069f77 | 1999 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a FI |
2000 | if (calldata->roc && |
2001 | pnfs_roc_drain(calldata->inode, &calldata->roc_barrier)) { | |
2002 | rpc_sleep_on(&NFS_SERVER(calldata->inode)->roc_rpcwaitq, | |
2003 | task, NULL); | |
2004 | return; | |
2005 | } | |
2006 | } | |
88069f77 | 2007 | |
516a6af6 | 2008 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2009 | calldata->timestamp = jiffies; |
035168ab | 2010 | if (nfs4_setup_sequence(NFS_SERVER(calldata->inode), |
19ddab06 AA |
2011 | &calldata->arg.seq_args, &calldata->res.seq_res, |
2012 | 1, task)) | |
2013 | return; | |
5138fde0 | 2014 | rpc_call_start(task); |
1da177e4 LT |
2015 | } |
2016 | ||
963d8fe5 | 2017 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2018 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2019 | .rpc_call_done = nfs4_close_done, |
2020 | .rpc_release = nfs4_free_closedata, | |
2021 | }; | |
2022 | ||
1da177e4 LT |
2023 | /* |
2024 | * It is possible for data to be read/written from a mem-mapped file | |
2025 | * after the sys_close call (which hits the vfs layer as a flush). | |
2026 | * This means that we can't safely call nfsv4 close on a file until | |
2027 | * the inode is cleared. This in turn means that we are not good | |
2028 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2029 | * share state even when we are done with one of the three share | |
2030 | * stateid's in the inode. | |
2031 | * | |
2032 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2033 | */ | |
643168c2 | 2034 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait, bool roc) |
1da177e4 | 2035 | { |
4a35bd41 | 2036 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2037 | struct nfs4_closedata *calldata; |
b39e625b TM |
2038 | struct nfs4_state_owner *sp = state->owner; |
2039 | struct rpc_task *task; | |
5138fde0 TM |
2040 | struct rpc_message msg = { |
2041 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2042 | .rpc_cred = state->owner->so_cred, | |
2043 | }; | |
c970aa85 TM |
2044 | struct rpc_task_setup task_setup_data = { |
2045 | .rpc_client = server->client, | |
5138fde0 | 2046 | .rpc_message = &msg, |
c970aa85 | 2047 | .callback_ops = &nfs4_close_ops, |
101070ca | 2048 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2049 | .flags = RPC_TASK_ASYNC, |
2050 | }; | |
9512135d | 2051 | int status = -ENOMEM; |
1da177e4 | 2052 | |
8535b2be | 2053 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2054 | if (calldata == NULL) |
9512135d | 2055 | goto out; |
4a35bd41 | 2056 | calldata->inode = state->inode; |
1da177e4 | 2057 | calldata->state = state; |
4a35bd41 | 2058 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2059 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2060 | /* Serialization for the sequence id */ |
8535b2be | 2061 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2062 | if (calldata->arg.seqid == NULL) |
2063 | goto out_free_calldata; | |
dc0b027d | 2064 | calldata->arg.fmode = 0; |
a65318bf | 2065 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2066 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2067 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2068 | calldata->res.server = server; |
f7e8917a | 2069 | calldata->roc = roc; |
643168c2 | 2070 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2071 | |
1174dd1f TM |
2072 | msg.rpc_argp = &calldata->arg; |
2073 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2074 | task_setup_data.callback_data = calldata; |
2075 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2076 | if (IS_ERR(task)) |
2077 | return PTR_ERR(task); | |
a49c3c77 TM |
2078 | status = 0; |
2079 | if (wait) | |
2080 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2081 | rpc_put_task(task); |
a49c3c77 | 2082 | return status; |
9512135d TM |
2083 | out_free_calldata: |
2084 | kfree(calldata); | |
2085 | out: | |
f7e8917a FI |
2086 | if (roc) |
2087 | pnfs_roc_release(state->inode); | |
b39e625b TM |
2088 | nfs4_put_open_state(state); |
2089 | nfs4_put_state_owner(sp); | |
9512135d | 2090 | return status; |
1da177e4 LT |
2091 | } |
2092 | ||
2b484297 | 2093 | static struct inode * |
cd9a1c0e | 2094 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2095 | { |
1da177e4 | 2096 | struct nfs4_state *state; |
1da177e4 | 2097 | |
565277f6 | 2098 | /* Protect against concurrent sillydeletes */ |
3d4ff43d | 2099 | state = nfs4_do_open(dir, ctx->dentry, ctx->mode, open_flags, attr, ctx->cred); |
f46e0bd3 TM |
2100 | if (IS_ERR(state)) |
2101 | return ERR_CAST(state); | |
cd9a1c0e | 2102 | ctx->state = state; |
f46e0bd3 | 2103 | return igrab(state->inode); |
1da177e4 LT |
2104 | } |
2105 | ||
1185a552 | 2106 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2107 | { |
2108 | if (ctx->state == NULL) | |
2109 | return; | |
2110 | if (is_sync) | |
643168c2 | 2111 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2112 | else |
643168c2 | 2113 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2114 | } |
1da177e4 LT |
2115 | |
2116 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2117 | { | |
43652ad5 BH |
2118 | struct nfs4_server_caps_arg args = { |
2119 | .fhandle = fhandle, | |
2120 | }; | |
1da177e4 LT |
2121 | struct nfs4_server_caps_res res = {}; |
2122 | struct rpc_message msg = { | |
2123 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2124 | .rpc_argp = &args, |
1da177e4 LT |
2125 | .rpc_resp = &res, |
2126 | }; | |
2127 | int status; | |
2128 | ||
7c513058 | 2129 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2130 | if (status == 0) { |
2131 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2132 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2133 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2134 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2135 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2136 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2137 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2138 | server->caps |= NFS_CAP_ACLS; | |
2139 | if (res.has_links != 0) | |
2140 | server->caps |= NFS_CAP_HARDLINKS; | |
2141 | if (res.has_symlinks != 0) | |
2142 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2143 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2144 | server->caps |= NFS_CAP_FILEID; | |
2145 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2146 | server->caps |= NFS_CAP_MODE; | |
2147 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2148 | server->caps |= NFS_CAP_NLINK; | |
2149 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2150 | server->caps |= NFS_CAP_OWNER; | |
2151 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2152 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2153 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2154 | server->caps |= NFS_CAP_ATIME; | |
2155 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2156 | server->caps |= NFS_CAP_CTIME; | |
2157 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2158 | server->caps |= NFS_CAP_MTIME; | |
2159 | ||
a65318bf TM |
2160 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2161 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2162 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 LT |
2163 | server->acl_bitmask = res.acl_bitmask; |
2164 | } | |
cccef3b9 | 2165 | |
1da177e4 LT |
2166 | return status; |
2167 | } | |
2168 | ||
55a97593 | 2169 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2170 | { |
2171 | struct nfs4_exception exception = { }; | |
2172 | int err; | |
2173 | do { | |
2174 | err = nfs4_handle_exception(server, | |
2175 | _nfs4_server_capabilities(server, fhandle), | |
2176 | &exception); | |
2177 | } while (exception.retry); | |
2178 | return err; | |
2179 | } | |
2180 | ||
2181 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2182 | struct nfs_fsinfo *info) | |
2183 | { | |
1da177e4 LT |
2184 | struct nfs4_lookup_root_arg args = { |
2185 | .bitmask = nfs4_fattr_bitmap, | |
2186 | }; | |
2187 | struct nfs4_lookup_res res = { | |
2188 | .server = server, | |
0e574af1 | 2189 | .fattr = info->fattr, |
1da177e4 LT |
2190 | .fh = fhandle, |
2191 | }; | |
2192 | struct rpc_message msg = { | |
2193 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2194 | .rpc_argp = &args, | |
2195 | .rpc_resp = &res, | |
2196 | }; | |
008f55d0 | 2197 | |
0e574af1 | 2198 | nfs_fattr_init(info->fattr); |
7c513058 | 2199 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2200 | } |
2201 | ||
2202 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2203 | struct nfs_fsinfo *info) | |
2204 | { | |
2205 | struct nfs4_exception exception = { }; | |
2206 | int err; | |
2207 | do { | |
fb8a5ba8 BS |
2208 | err = _nfs4_lookup_root(server, fhandle, info); |
2209 | switch (err) { | |
2210 | case 0: | |
2211 | case -NFS4ERR_WRONGSEC: | |
2212 | break; | |
2213 | default: | |
2214 | err = nfs4_handle_exception(server, err, &exception); | |
2215 | } | |
1da177e4 LT |
2216 | } while (exception.retry); |
2217 | return err; | |
2218 | } | |
2219 | ||
8f70e95f BS |
2220 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2221 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2222 | { | |
2223 | struct rpc_auth *auth; | |
2224 | int ret; | |
2225 | ||
2226 | auth = rpcauth_create(flavor, server->client); | |
2227 | if (!auth) { | |
2228 | ret = -EIO; | |
2229 | goto out; | |
2230 | } | |
2231 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2232 | out: |
2233 | return ret; | |
2234 | } | |
2235 | ||
801a16dc | 2236 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2237 | struct nfs_fsinfo *info) |
1da177e4 | 2238 | { |
8f70e95f | 2239 | int i, len, status = 0; |
0fabee24 | 2240 | rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS]; |
1da177e4 | 2241 | |
801a16dc BS |
2242 | len = gss_mech_list_pseudoflavors(&flav_array[0]); |
2243 | flav_array[len] = RPC_AUTH_NULL; | |
2244 | len += 1; | |
8f70e95f BS |
2245 | |
2246 | for (i = 0; i < len; i++) { | |
2247 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); | |
fb8a5ba8 | 2248 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2249 | continue; |
2250 | break; | |
8f70e95f | 2251 | } |
fb8a5ba8 BS |
2252 | /* |
2253 | * -EACCESS could mean that the user doesn't have correct permissions | |
2254 | * to access the mount. It could also mean that we tried to mount | |
2255 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2256 | * existing mount programs don't handle -EACCES very well so it should | |
2257 | * be mapped to -EPERM instead. | |
2258 | */ | |
2259 | if (status == -EACCES) | |
2260 | status = -EPERM; | |
801a16dc BS |
2261 | return status; |
2262 | } | |
2263 | ||
2264 | /* | |
2265 | * get the file handle for the "/" directory on the server | |
2266 | */ | |
2267 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2268 | struct nfs_fsinfo *info) | |
2269 | { | |
fca78d6d | 2270 | int minor_version = server->nfs_client->cl_minorversion; |
801a16dc | 2271 | int status = nfs4_lookup_root(server, fhandle, info); |
fb8a5ba8 BS |
2272 | if ((status == -NFS4ERR_WRONGSEC) && !(server->flags & NFS_MOUNT_SECFLAVOUR)) |
2273 | /* | |
2274 | * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM | |
2275 | * by nfs4_map_errors() as this function exits. | |
2276 | */ | |
fca78d6d | 2277 | status = nfs_v4_minor_ops[minor_version]->find_root_sec(server, fhandle, info); |
1da177e4 LT |
2278 | if (status == 0) |
2279 | status = nfs4_server_capabilities(server, fhandle); | |
2280 | if (status == 0) | |
2281 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2282 | return nfs4_map_errors(status); |
1da177e4 LT |
2283 | } |
2284 | ||
533eb461 | 2285 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); |
6b97fd3d MN |
2286 | /* |
2287 | * Get locations and (maybe) other attributes of a referral. | |
2288 | * Note that we'll actually follow the referral later when | |
2289 | * we detect fsid mismatch in inode revalidation | |
2290 | */ | |
533eb461 AA |
2291 | static int nfs4_get_referral(struct inode *dir, const struct qstr *name, |
2292 | struct nfs_fattr *fattr, struct nfs_fh *fhandle) | |
6b97fd3d MN |
2293 | { |
2294 | int status = -ENOMEM; | |
2295 | struct page *page = NULL; | |
2296 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2297 | |
2298 | page = alloc_page(GFP_KERNEL); | |
2299 | if (page == NULL) | |
2300 | goto out; | |
2301 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2302 | if (locations == NULL) | |
2303 | goto out; | |
2304 | ||
c228fd3a | 2305 | status = nfs4_proc_fs_locations(dir, name, locations, page); |
6b97fd3d MN |
2306 | if (status != 0) |
2307 | goto out; | |
2308 | /* Make sure server returned a different fsid for the referral */ | |
2309 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2310 | dprintk("%s: server did not return a different fsid for" |
2311 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2312 | status = -EIO; |
2313 | goto out; | |
2314 | } | |
533eb461 AA |
2315 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2316 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2317 | |
533eb461 | 2318 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2319 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2320 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2321 | out: | |
2322 | if (page) | |
2323 | __free_page(page); | |
5d7ca35a | 2324 | kfree(locations); |
6b97fd3d MN |
2325 | return status; |
2326 | } | |
2327 | ||
1da177e4 LT |
2328 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2329 | { | |
2330 | struct nfs4_getattr_arg args = { | |
2331 | .fh = fhandle, | |
2332 | .bitmask = server->attr_bitmask, | |
2333 | }; | |
2334 | struct nfs4_getattr_res res = { | |
2335 | .fattr = fattr, | |
2336 | .server = server, | |
2337 | }; | |
2338 | struct rpc_message msg = { | |
2339 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2340 | .rpc_argp = &args, | |
2341 | .rpc_resp = &res, | |
2342 | }; | |
2343 | ||
0e574af1 | 2344 | nfs_fattr_init(fattr); |
7c513058 | 2345 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2346 | } |
2347 | ||
2348 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2349 | { | |
2350 | struct nfs4_exception exception = { }; | |
2351 | int err; | |
2352 | do { | |
2353 | err = nfs4_handle_exception(server, | |
2354 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2355 | &exception); | |
2356 | } while (exception.retry); | |
2357 | return err; | |
2358 | } | |
2359 | ||
2360 | /* | |
2361 | * The file is not closed if it is opened due to the a request to change | |
2362 | * the size of the file. The open call will not be needed once the | |
2363 | * VFS layer lookup-intents are implemented. | |
2364 | * | |
2365 | * Close is called when the inode is destroyed. | |
2366 | * If we haven't opened the file for O_WRONLY, we | |
2367 | * need to in the size_change case to obtain a stateid. | |
2368 | * | |
2369 | * Got race? | |
2370 | * Because OPEN is always done by name in nfsv4, it is | |
2371 | * possible that we opened a different file by the same | |
2372 | * name. We can recognize this race condition, but we | |
2373 | * can't do anything about it besides returning an error. | |
2374 | * | |
2375 | * This will be fixed with VFS changes (lookup-intent). | |
2376 | */ | |
2377 | static int | |
2378 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2379 | struct iattr *sattr) | |
2380 | { | |
08e9eac4 | 2381 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2382 | struct rpc_cred *cred = NULL; |
d530838b | 2383 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2384 | int status; |
2385 | ||
8a1636c4 BH |
2386 | if (pnfs_ld_layoutret_on_setattr(inode)) |
2387 | pnfs_return_layout(inode); | |
2388 | ||
0e574af1 | 2389 | nfs_fattr_init(fattr); |
1da177e4 | 2390 | |
d530838b | 2391 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2392 | if (sattr->ia_valid & ATTR_FILE) { |
2393 | struct nfs_open_context *ctx; | |
2394 | ||
2395 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2396 | if (ctx) { |
2397 | cred = ctx->cred; | |
2398 | state = ctx->state; | |
2399 | } | |
659bfcd6 | 2400 | } |
08e9eac4 | 2401 | |
659bfcd6 | 2402 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2403 | if (status == 0) |
2404 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2405 | return status; |
2406 | } | |
2407 | ||
0c2e53f1 TM |
2408 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
2409 | const struct qstr *name, struct nfs_fh *fhandle, | |
2410 | struct nfs_fattr *fattr) | |
2b3de441 | 2411 | { |
0c2e53f1 | 2412 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
2413 | int status; |
2414 | struct nfs4_lookup_arg args = { | |
2415 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 2416 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
2417 | .name = name, |
2418 | }; | |
2419 | struct nfs4_lookup_res res = { | |
2420 | .server = server, | |
2421 | .fattr = fattr, | |
2422 | .fh = fhandle, | |
2423 | }; | |
2424 | struct rpc_message msg = { | |
2425 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2426 | .rpc_argp = &args, | |
2427 | .rpc_resp = &res, | |
2428 | }; | |
2429 | ||
2430 | nfs_fattr_init(fattr); | |
2431 | ||
1da177e4 | 2432 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 2433 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2434 | dprintk("NFS reply lookup: %d\n", status); |
2435 | return status; | |
2436 | } | |
2437 | ||
7ebb9315 BS |
2438 | void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr, struct nfs_fh *fh) |
2439 | { | |
2440 | memset(fh, 0, sizeof(struct nfs_fh)); | |
2441 | fattr->fsid.major = 1; | |
2442 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
2443 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_FSID | NFS_ATTR_FATTR_MOUNTPOINT; | |
2444 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; | |
2445 | fattr->nlink = 2; | |
2446 | } | |
2447 | ||
7c513058 BS |
2448 | static int nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, struct qstr *name, |
2449 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
1da177e4 LT |
2450 | { |
2451 | struct nfs4_exception exception = { }; | |
2452 | int err; | |
2453 | do { | |
0c2e53f1 TM |
2454 | int status; |
2455 | ||
2456 | status = _nfs4_proc_lookup(clnt, dir, name, fhandle, fattr); | |
2457 | switch (status) { | |
2458 | case -NFS4ERR_MOVED: | |
2459 | err = nfs4_get_referral(dir, name, fattr, fhandle); | |
2460 | break; | |
2461 | case -NFS4ERR_WRONGSEC: | |
7ebb9315 | 2462 | nfs_fixup_secinfo_attributes(fattr, fhandle); |
0c2e53f1 TM |
2463 | } |
2464 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2465 | status, &exception); | |
1da177e4 LT |
2466 | } while (exception.retry); |
2467 | return err; | |
2468 | } | |
2469 | ||
2470 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2471 | { | |
76b32999 | 2472 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2473 | struct nfs4_accessargs args = { |
2474 | .fh = NFS_FH(inode), | |
76b32999 TM |
2475 | .bitmask = server->attr_bitmask, |
2476 | }; | |
2477 | struct nfs4_accessres res = { | |
2478 | .server = server, | |
1da177e4 | 2479 | }; |
1da177e4 LT |
2480 | struct rpc_message msg = { |
2481 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2482 | .rpc_argp = &args, | |
2483 | .rpc_resp = &res, | |
2484 | .rpc_cred = entry->cred, | |
2485 | }; | |
2486 | int mode = entry->mask; | |
2487 | int status; | |
2488 | ||
2489 | /* | |
2490 | * Determine which access bits we want to ask for... | |
2491 | */ | |
2492 | if (mode & MAY_READ) | |
2493 | args.access |= NFS4_ACCESS_READ; | |
2494 | if (S_ISDIR(inode->i_mode)) { | |
2495 | if (mode & MAY_WRITE) | |
2496 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2497 | if (mode & MAY_EXEC) | |
2498 | args.access |= NFS4_ACCESS_LOOKUP; | |
2499 | } else { | |
2500 | if (mode & MAY_WRITE) | |
2501 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2502 | if (mode & MAY_EXEC) | |
2503 | args.access |= NFS4_ACCESS_EXECUTE; | |
2504 | } | |
c407d41a TM |
2505 | |
2506 | res.fattr = nfs_alloc_fattr(); | |
2507 | if (res.fattr == NULL) | |
2508 | return -ENOMEM; | |
2509 | ||
7c513058 | 2510 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2511 | if (!status) { |
2512 | entry->mask = 0; | |
2513 | if (res.access & NFS4_ACCESS_READ) | |
2514 | entry->mask |= MAY_READ; | |
2515 | if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE)) | |
2516 | entry->mask |= MAY_WRITE; | |
2517 | if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE)) | |
2518 | entry->mask |= MAY_EXEC; | |
c407d41a | 2519 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2520 | } |
c407d41a | 2521 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2522 | return status; |
2523 | } | |
2524 | ||
2525 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2526 | { | |
2527 | struct nfs4_exception exception = { }; | |
2528 | int err; | |
2529 | do { | |
2530 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2531 | _nfs4_proc_access(inode, entry), | |
2532 | &exception); | |
2533 | } while (exception.retry); | |
2534 | return err; | |
2535 | } | |
2536 | ||
2537 | /* | |
2538 | * TODO: For the time being, we don't try to get any attributes | |
2539 | * along with any of the zero-copy operations READ, READDIR, | |
2540 | * READLINK, WRITE. | |
2541 | * | |
2542 | * In the case of the first three, we want to put the GETATTR | |
2543 | * after the read-type operation -- this is because it is hard | |
2544 | * to predict the length of a GETATTR response in v4, and thus | |
2545 | * align the READ data correctly. This means that the GETATTR | |
2546 | * may end up partially falling into the page cache, and we should | |
2547 | * shift it into the 'tail' of the xdr_buf before processing. | |
2548 | * To do this efficiently, we need to know the total length | |
2549 | * of data received, which doesn't seem to be available outside | |
2550 | * of the RPC layer. | |
2551 | * | |
2552 | * In the case of WRITE, we also want to put the GETATTR after | |
2553 | * the operation -- in this case because we want to make sure | |
2554 | * we get the post-operation mtime and size. This means that | |
2555 | * we can't use xdr_encode_pages() as written: we need a variant | |
2556 | * of it which would leave room in the 'tail' iovec. | |
2557 | * | |
2558 | * Both of these changes to the XDR layer would in fact be quite | |
2559 | * minor, but I decided to leave them for a subsequent patch. | |
2560 | */ | |
2561 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2562 | unsigned int pgbase, unsigned int pglen) | |
2563 | { | |
2564 | struct nfs4_readlink args = { | |
2565 | .fh = NFS_FH(inode), | |
2566 | .pgbase = pgbase, | |
2567 | .pglen = pglen, | |
2568 | .pages = &page, | |
2569 | }; | |
f50c7000 | 2570 | struct nfs4_readlink_res res; |
1da177e4 LT |
2571 | struct rpc_message msg = { |
2572 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2573 | .rpc_argp = &args, | |
f50c7000 | 2574 | .rpc_resp = &res, |
1da177e4 LT |
2575 | }; |
2576 | ||
7c513058 | 2577 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2578 | } |
2579 | ||
2580 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2581 | unsigned int pgbase, unsigned int pglen) | |
2582 | { | |
2583 | struct nfs4_exception exception = { }; | |
2584 | int err; | |
2585 | do { | |
2586 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2587 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2588 | &exception); | |
2589 | } while (exception.retry); | |
2590 | return err; | |
2591 | } | |
2592 | ||
1da177e4 LT |
2593 | /* |
2594 | * Got race? | |
2595 | * We will need to arrange for the VFS layer to provide an atomic open. | |
2596 | * Until then, this create/open method is prone to inefficiency and race | |
2597 | * conditions due to the lookup, create, and open VFS calls from sys_open() | |
2598 | * placed on the wire. | |
2599 | * | |
2600 | * Given the above sorry state of affairs, I'm simply sending an OPEN. | |
2601 | * The file will be opened again in the subsequent VFS open call | |
2602 | * (nfs4_proc_file_open). | |
2603 | * | |
2604 | * The open for read will just hang around to be used by any process that | |
2605 | * opens the file O_RDONLY. This will all be resolved with the VFS changes. | |
2606 | */ | |
2607 | ||
2608 | static int | |
2609 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
c0204fd2 | 2610 | int flags, struct nfs_open_context *ctx) |
1da177e4 | 2611 | { |
82a2c1b7 | 2612 | struct dentry *de = dentry; |
1da177e4 | 2613 | struct nfs4_state *state; |
c0204fd2 TM |
2614 | struct rpc_cred *cred = NULL; |
2615 | fmode_t fmode = 0; | |
1da177e4 LT |
2616 | int status = 0; |
2617 | ||
c0204fd2 TM |
2618 | if (ctx != NULL) { |
2619 | cred = ctx->cred; | |
3d4ff43d | 2620 | de = ctx->dentry; |
c0204fd2 | 2621 | fmode = ctx->mode; |
1da177e4 | 2622 | } |
a8a5da99 | 2623 | sattr->ia_mode &= ~current_umask(); |
82a2c1b7 | 2624 | state = nfs4_do_open(dir, de, fmode, flags, sattr, cred); |
d4d9cdcb | 2625 | d_drop(dentry); |
1da177e4 LT |
2626 | if (IS_ERR(state)) { |
2627 | status = PTR_ERR(state); | |
c0204fd2 | 2628 | goto out; |
1da177e4 | 2629 | } |
d4d9cdcb | 2630 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2631 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
c0204fd2 TM |
2632 | if (ctx != NULL) |
2633 | ctx->state = state; | |
02a913a7 | 2634 | else |
643168c2 | 2635 | nfs4_close_sync(state, fmode); |
1da177e4 LT |
2636 | out: |
2637 | return status; | |
2638 | } | |
2639 | ||
2640 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2641 | { | |
16e42959 | 2642 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2643 | struct nfs_removeargs args = { |
1da177e4 | 2644 | .fh = NFS_FH(dir), |
4fdc17b2 TM |
2645 | .name.len = name->len, |
2646 | .name.name = name->name, | |
16e42959 TM |
2647 | .bitmask = server->attr_bitmask, |
2648 | }; | |
4fdc17b2 | 2649 | struct nfs_removeres res = { |
16e42959 | 2650 | .server = server, |
1da177e4 | 2651 | }; |
1da177e4 | 2652 | struct rpc_message msg = { |
4fdc17b2 TM |
2653 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
2654 | .rpc_argp = &args, | |
2655 | .rpc_resp = &res, | |
1da177e4 | 2656 | }; |
d346890b TM |
2657 | int status = -ENOMEM; |
2658 | ||
2659 | res.dir_attr = nfs_alloc_fattr(); | |
2660 | if (res.dir_attr == NULL) | |
2661 | goto out; | |
1da177e4 | 2662 | |
7c513058 | 2663 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
16e42959 TM |
2664 | if (status == 0) { |
2665 | update_changeattr(dir, &res.cinfo); | |
d346890b | 2666 | nfs_post_op_update_inode(dir, res.dir_attr); |
16e42959 | 2667 | } |
d346890b TM |
2668 | nfs_free_fattr(res.dir_attr); |
2669 | out: | |
1da177e4 LT |
2670 | return status; |
2671 | } | |
2672 | ||
2673 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2674 | { | |
2675 | struct nfs4_exception exception = { }; | |
2676 | int err; | |
2677 | do { | |
2678 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2679 | _nfs4_proc_remove(dir, name), | |
2680 | &exception); | |
2681 | } while (exception.retry); | |
2682 | return err; | |
2683 | } | |
2684 | ||
e4eff1a6 | 2685 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 2686 | { |
e4eff1a6 TM |
2687 | struct nfs_server *server = NFS_SERVER(dir); |
2688 | struct nfs_removeargs *args = msg->rpc_argp; | |
2689 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 2690 | |
a65318bf | 2691 | args->bitmask = server->cache_consistency_bitmask; |
e4eff1a6 | 2692 | res->server = server; |
dfb4f309 | 2693 | res->seq_res.sr_slot = NULL; |
1da177e4 | 2694 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
1da177e4 LT |
2695 | } |
2696 | ||
e4eff1a6 | 2697 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 2698 | { |
e4eff1a6 TM |
2699 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
2700 | ||
14516c3a TM |
2701 | if (!nfs4_sequence_done(task, &res->seq_res)) |
2702 | return 0; | |
9e33bed5 | 2703 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
2704 | return 0; |
2705 | update_changeattr(dir, &res->cinfo); | |
d346890b | 2706 | nfs_post_op_update_inode(dir, res->dir_attr); |
e4eff1a6 | 2707 | return 1; |
1da177e4 LT |
2708 | } |
2709 | ||
d3d4152a JL |
2710 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
2711 | { | |
2712 | struct nfs_server *server = NFS_SERVER(dir); | |
2713 | struct nfs_renameargs *arg = msg->rpc_argp; | |
2714 | struct nfs_renameres *res = msg->rpc_resp; | |
2715 | ||
2716 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
2717 | arg->bitmask = server->attr_bitmask; | |
2718 | res->server = server; | |
2719 | } | |
2720 | ||
2721 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
2722 | struct inode *new_dir) | |
2723 | { | |
2724 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
2725 | ||
2726 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
2727 | return 0; | |
2728 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
2729 | return 0; | |
2730 | ||
2731 | update_changeattr(old_dir, &res->old_cinfo); | |
2732 | nfs_post_op_update_inode(old_dir, res->old_fattr); | |
2733 | update_changeattr(new_dir, &res->new_cinfo); | |
2734 | nfs_post_op_update_inode(new_dir, res->new_fattr); | |
2735 | return 1; | |
2736 | } | |
2737 | ||
1da177e4 LT |
2738 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
2739 | struct inode *new_dir, struct qstr *new_name) | |
2740 | { | |
6caf2c82 | 2741 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 2742 | struct nfs_renameargs arg = { |
1da177e4 LT |
2743 | .old_dir = NFS_FH(old_dir), |
2744 | .new_dir = NFS_FH(new_dir), | |
2745 | .old_name = old_name, | |
2746 | .new_name = new_name, | |
6caf2c82 TM |
2747 | .bitmask = server->attr_bitmask, |
2748 | }; | |
e8582a8b | 2749 | struct nfs_renameres res = { |
6caf2c82 | 2750 | .server = server, |
1da177e4 | 2751 | }; |
1da177e4 LT |
2752 | struct rpc_message msg = { |
2753 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
2754 | .rpc_argp = &arg, | |
2755 | .rpc_resp = &res, | |
2756 | }; | |
011fff72 | 2757 | int status = -ENOMEM; |
1da177e4 | 2758 | |
011fff72 TM |
2759 | res.old_fattr = nfs_alloc_fattr(); |
2760 | res.new_fattr = nfs_alloc_fattr(); | |
2761 | if (res.old_fattr == NULL || res.new_fattr == NULL) | |
2762 | goto out; | |
1da177e4 | 2763 | |
7c513058 | 2764 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
2765 | if (!status) { |
2766 | update_changeattr(old_dir, &res.old_cinfo); | |
6caf2c82 | 2767 | nfs_post_op_update_inode(old_dir, res.old_fattr); |
1da177e4 | 2768 | update_changeattr(new_dir, &res.new_cinfo); |
6caf2c82 | 2769 | nfs_post_op_update_inode(new_dir, res.new_fattr); |
1da177e4 | 2770 | } |
011fff72 TM |
2771 | out: |
2772 | nfs_free_fattr(res.new_fattr); | |
2773 | nfs_free_fattr(res.old_fattr); | |
1da177e4 LT |
2774 | return status; |
2775 | } | |
2776 | ||
2777 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2778 | struct inode *new_dir, struct qstr *new_name) | |
2779 | { | |
2780 | struct nfs4_exception exception = { }; | |
2781 | int err; | |
2782 | do { | |
2783 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
2784 | _nfs4_proc_rename(old_dir, old_name, | |
2785 | new_dir, new_name), | |
2786 | &exception); | |
2787 | } while (exception.retry); | |
2788 | return err; | |
2789 | } | |
2790 | ||
2791 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2792 | { | |
91ba2eee | 2793 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2794 | struct nfs4_link_arg arg = { |
2795 | .fh = NFS_FH(inode), | |
2796 | .dir_fh = NFS_FH(dir), | |
2797 | .name = name, | |
91ba2eee TM |
2798 | .bitmask = server->attr_bitmask, |
2799 | }; | |
91ba2eee TM |
2800 | struct nfs4_link_res res = { |
2801 | .server = server, | |
1da177e4 | 2802 | }; |
1da177e4 LT |
2803 | struct rpc_message msg = { |
2804 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
2805 | .rpc_argp = &arg, | |
91ba2eee | 2806 | .rpc_resp = &res, |
1da177e4 | 2807 | }; |
136f2627 TM |
2808 | int status = -ENOMEM; |
2809 | ||
2810 | res.fattr = nfs_alloc_fattr(); | |
2811 | res.dir_attr = nfs_alloc_fattr(); | |
2812 | if (res.fattr == NULL || res.dir_attr == NULL) | |
2813 | goto out; | |
1da177e4 | 2814 | |
7c513058 | 2815 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
2816 | if (!status) { |
2817 | update_changeattr(dir, &res.cinfo); | |
2818 | nfs_post_op_update_inode(dir, res.dir_attr); | |
73a3d07c | 2819 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 2820 | } |
136f2627 TM |
2821 | out: |
2822 | nfs_free_fattr(res.dir_attr); | |
2823 | nfs_free_fattr(res.fattr); | |
1da177e4 LT |
2824 | return status; |
2825 | } | |
2826 | ||
2827 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2828 | { | |
2829 | struct nfs4_exception exception = { }; | |
2830 | int err; | |
2831 | do { | |
2832 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2833 | _nfs4_proc_link(inode, dir, name), | |
2834 | &exception); | |
2835 | } while (exception.retry); | |
2836 | return err; | |
2837 | } | |
2838 | ||
57dc9a57 TM |
2839 | struct nfs4_createdata { |
2840 | struct rpc_message msg; | |
2841 | struct nfs4_create_arg arg; | |
2842 | struct nfs4_create_res res; | |
2843 | struct nfs_fh fh; | |
2844 | struct nfs_fattr fattr; | |
2845 | struct nfs_fattr dir_fattr; | |
2846 | }; | |
2847 | ||
2848 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
2849 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
2850 | { | |
2851 | struct nfs4_createdata *data; | |
2852 | ||
2853 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
2854 | if (data != NULL) { | |
2855 | struct nfs_server *server = NFS_SERVER(dir); | |
2856 | ||
2857 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
2858 | data->msg.rpc_argp = &data->arg; | |
2859 | data->msg.rpc_resp = &data->res; | |
2860 | data->arg.dir_fh = NFS_FH(dir); | |
2861 | data->arg.server = server; | |
2862 | data->arg.name = name; | |
2863 | data->arg.attrs = sattr; | |
2864 | data->arg.ftype = ftype; | |
2865 | data->arg.bitmask = server->attr_bitmask; | |
2866 | data->res.server = server; | |
2867 | data->res.fh = &data->fh; | |
2868 | data->res.fattr = &data->fattr; | |
2869 | data->res.dir_fattr = &data->dir_fattr; | |
2870 | nfs_fattr_init(data->res.fattr); | |
2871 | nfs_fattr_init(data->res.dir_fattr); | |
2872 | } | |
2873 | return data; | |
2874 | } | |
2875 | ||
2876 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
2877 | { | |
7c513058 | 2878 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 2879 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
2880 | if (status == 0) { |
2881 | update_changeattr(dir, &data->res.dir_cinfo); | |
2882 | nfs_post_op_update_inode(dir, data->res.dir_fattr); | |
2883 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); | |
2884 | } | |
2885 | return status; | |
2886 | } | |
2887 | ||
2888 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
2889 | { | |
2890 | kfree(data); | |
2891 | } | |
2892 | ||
4f390c15 | 2893 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2894 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 2895 | { |
57dc9a57 TM |
2896 | struct nfs4_createdata *data; |
2897 | int status = -ENAMETOOLONG; | |
1da177e4 | 2898 | |
94a6d753 | 2899 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 2900 | goto out; |
4f390c15 | 2901 | |
57dc9a57 TM |
2902 | status = -ENOMEM; |
2903 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
2904 | if (data == NULL) | |
2905 | goto out; | |
2906 | ||
2907 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
2908 | data->arg.u.symlink.pages = &page; | |
2909 | data->arg.u.symlink.len = len; | |
1da177e4 | 2910 | |
57dc9a57 TM |
2911 | status = nfs4_do_create(dir, dentry, data); |
2912 | ||
2913 | nfs4_free_createdata(data); | |
2914 | out: | |
1da177e4 LT |
2915 | return status; |
2916 | } | |
2917 | ||
4f390c15 | 2918 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2919 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
2920 | { |
2921 | struct nfs4_exception exception = { }; | |
2922 | int err; | |
2923 | do { | |
2924 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
2925 | _nfs4_proc_symlink(dir, dentry, page, |
2926 | len, sattr), | |
1da177e4 LT |
2927 | &exception); |
2928 | } while (exception.retry); | |
2929 | return err; | |
2930 | } | |
2931 | ||
2932 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2933 | struct iattr *sattr) | |
2934 | { | |
57dc9a57 TM |
2935 | struct nfs4_createdata *data; |
2936 | int status = -ENOMEM; | |
1da177e4 | 2937 | |
57dc9a57 TM |
2938 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
2939 | if (data == NULL) | |
2940 | goto out; | |
2941 | ||
2942 | status = nfs4_do_create(dir, dentry, data); | |
2943 | ||
2944 | nfs4_free_createdata(data); | |
2945 | out: | |
1da177e4 LT |
2946 | return status; |
2947 | } | |
2948 | ||
2949 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2950 | struct iattr *sattr) | |
2951 | { | |
2952 | struct nfs4_exception exception = { }; | |
2953 | int err; | |
a8a5da99 AK |
2954 | |
2955 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
2956 | do { |
2957 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2958 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
2959 | &exception); | |
2960 | } while (exception.retry); | |
2961 | return err; | |
2962 | } | |
2963 | ||
2964 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 2965 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
2966 | { |
2967 | struct inode *dir = dentry->d_inode; | |
2968 | struct nfs4_readdir_arg args = { | |
2969 | .fh = NFS_FH(dir), | |
56e4ebf8 | 2970 | .pages = pages, |
1da177e4 LT |
2971 | .pgbase = 0, |
2972 | .count = count, | |
96d25e53 | 2973 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 2974 | .plus = plus, |
1da177e4 LT |
2975 | }; |
2976 | struct nfs4_readdir_res res; | |
2977 | struct rpc_message msg = { | |
2978 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
2979 | .rpc_argp = &args, | |
2980 | .rpc_resp = &res, | |
2981 | .rpc_cred = cred, | |
2982 | }; | |
2983 | int status; | |
2984 | ||
3110ff80 | 2985 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
2986 | dentry->d_parent->d_name.name, |
2987 | dentry->d_name.name, | |
2988 | (unsigned long long)cookie); | |
1da177e4 LT |
2989 | nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args); |
2990 | res.pgbase = args.pgbase; | |
7c513058 | 2991 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 2992 | if (status >= 0) { |
1da177e4 | 2993 | memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
2994 | status += args.pgbase; |
2995 | } | |
c4812998 TM |
2996 | |
2997 | nfs_invalidate_atime(dir); | |
2998 | ||
3110ff80 | 2999 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3000 | return status; |
3001 | } | |
3002 | ||
3003 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3004 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3005 | { |
3006 | struct nfs4_exception exception = { }; | |
3007 | int err; | |
3008 | do { | |
3009 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
3010 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 3011 | pages, count, plus), |
1da177e4 LT |
3012 | &exception); |
3013 | } while (exception.retry); | |
3014 | return err; | |
3015 | } | |
3016 | ||
3017 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3018 | struct iattr *sattr, dev_t rdev) | |
3019 | { | |
57dc9a57 TM |
3020 | struct nfs4_createdata *data; |
3021 | int mode = sattr->ia_mode; | |
3022 | int status = -ENOMEM; | |
1da177e4 LT |
3023 | |
3024 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
3025 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
57dc9a57 TM |
3026 | |
3027 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); | |
3028 | if (data == NULL) | |
3029 | goto out; | |
3030 | ||
1da177e4 | 3031 | if (S_ISFIFO(mode)) |
57dc9a57 | 3032 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3033 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3034 | data->arg.ftype = NF4BLK; |
3035 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3036 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3037 | } |
3038 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3039 | data->arg.ftype = NF4CHR; |
3040 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3041 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 | 3042 | } |
1da177e4 | 3043 | |
57dc9a57 TM |
3044 | status = nfs4_do_create(dir, dentry, data); |
3045 | ||
3046 | nfs4_free_createdata(data); | |
3047 | out: | |
1da177e4 LT |
3048 | return status; |
3049 | } | |
3050 | ||
3051 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3052 | struct iattr *sattr, dev_t rdev) | |
3053 | { | |
3054 | struct nfs4_exception exception = { }; | |
3055 | int err; | |
a8a5da99 AK |
3056 | |
3057 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3058 | do { |
3059 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3060 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
3061 | &exception); | |
3062 | } while (exception.retry); | |
3063 | return err; | |
3064 | } | |
3065 | ||
3066 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3067 | struct nfs_fsstat *fsstat) | |
3068 | { | |
3069 | struct nfs4_statfs_arg args = { | |
3070 | .fh = fhandle, | |
3071 | .bitmask = server->attr_bitmask, | |
3072 | }; | |
24ad148a BH |
3073 | struct nfs4_statfs_res res = { |
3074 | .fsstat = fsstat, | |
3075 | }; | |
1da177e4 LT |
3076 | struct rpc_message msg = { |
3077 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3078 | .rpc_argp = &args, | |
24ad148a | 3079 | .rpc_resp = &res, |
1da177e4 LT |
3080 | }; |
3081 | ||
0e574af1 | 3082 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3083 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3084 | } |
3085 | ||
3086 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3087 | { | |
3088 | struct nfs4_exception exception = { }; | |
3089 | int err; | |
3090 | do { | |
3091 | err = nfs4_handle_exception(server, | |
3092 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3093 | &exception); | |
3094 | } while (exception.retry); | |
3095 | return err; | |
3096 | } | |
3097 | ||
3098 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3099 | struct nfs_fsinfo *fsinfo) | |
3100 | { | |
3101 | struct nfs4_fsinfo_arg args = { | |
3102 | .fh = fhandle, | |
3103 | .bitmask = server->attr_bitmask, | |
3104 | }; | |
3dda5e43 BH |
3105 | struct nfs4_fsinfo_res res = { |
3106 | .fsinfo = fsinfo, | |
3107 | }; | |
1da177e4 LT |
3108 | struct rpc_message msg = { |
3109 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3110 | .rpc_argp = &args, | |
3dda5e43 | 3111 | .rpc_resp = &res, |
1da177e4 LT |
3112 | }; |
3113 | ||
7c513058 | 3114 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3115 | } |
3116 | ||
3117 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3118 | { | |
3119 | struct nfs4_exception exception = { }; | |
3120 | int err; | |
3121 | ||
3122 | do { | |
3123 | err = nfs4_handle_exception(server, | |
3124 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
3125 | &exception); | |
3126 | } while (exception.retry); | |
3127 | return err; | |
3128 | } | |
3129 | ||
3130 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3131 | { | |
0e574af1 | 3132 | nfs_fattr_init(fsinfo->fattr); |
1da177e4 LT |
3133 | return nfs4_do_fsinfo(server, fhandle, fsinfo); |
3134 | } | |
3135 | ||
3136 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3137 | struct nfs_pathconf *pathconf) | |
3138 | { | |
3139 | struct nfs4_pathconf_arg args = { | |
3140 | .fh = fhandle, | |
3141 | .bitmask = server->attr_bitmask, | |
3142 | }; | |
d45b2989 BH |
3143 | struct nfs4_pathconf_res res = { |
3144 | .pathconf = pathconf, | |
3145 | }; | |
1da177e4 LT |
3146 | struct rpc_message msg = { |
3147 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3148 | .rpc_argp = &args, | |
d45b2989 | 3149 | .rpc_resp = &res, |
1da177e4 LT |
3150 | }; |
3151 | ||
3152 | /* None of the pathconf attributes are mandatory to implement */ | |
3153 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3154 | memset(pathconf, 0, sizeof(*pathconf)); | |
3155 | return 0; | |
3156 | } | |
3157 | ||
0e574af1 | 3158 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3159 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3160 | } |
3161 | ||
3162 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3163 | struct nfs_pathconf *pathconf) | |
3164 | { | |
3165 | struct nfs4_exception exception = { }; | |
3166 | int err; | |
3167 | ||
3168 | do { | |
3169 | err = nfs4_handle_exception(server, | |
3170 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3171 | &exception); | |
3172 | } while (exception.retry); | |
3173 | return err; | |
3174 | } | |
3175 | ||
d20581aa BH |
3176 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3177 | { | |
3178 | nfs_invalidate_atime(data->inode); | |
3179 | } | |
3180 | ||
cbdabc7f | 3181 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3182 | { |
ec06c096 | 3183 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 3184 | |
9e33bed5 | 3185 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
0110ee15 | 3186 | nfs_restart_rpc(task, server->nfs_client); |
ec06c096 | 3187 | return -EAGAIN; |
1da177e4 | 3188 | } |
8850df99 | 3189 | |
d20581aa | 3190 | __nfs4_read_done_cb(data); |
1da177e4 | 3191 | if (task->tk_status > 0) |
ec06c096 TM |
3192 | renew_lease(server, data->timestamp); |
3193 | return 0; | |
1da177e4 LT |
3194 | } |
3195 | ||
cbdabc7f AA |
3196 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3197 | { | |
3198 | ||
3199 | dprintk("--> %s\n", __func__); | |
3200 | ||
3201 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3202 | return -EAGAIN; | |
3203 | ||
d20581aa BH |
3204 | return data->read_done_cb ? data->read_done_cb(task, data) : |
3205 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
3206 | } |
3207 | ||
bdc7f021 | 3208 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3209 | { |
1da177e4 | 3210 | data->timestamp = jiffies; |
cbdabc7f | 3211 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3212 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
1da177e4 LT |
3213 | } |
3214 | ||
cbdabc7f AA |
3215 | /* Reset the the nfs_read_data to send the read to the MDS. */ |
3216 | void nfs4_reset_read(struct rpc_task *task, struct nfs_read_data *data) | |
3217 | { | |
3218 | dprintk("%s Reset task for i/o through\n", __func__); | |
3219 | put_lseg(data->lseg); | |
3220 | data->lseg = NULL; | |
3221 | /* offsets will differ in the dense stripe case */ | |
3222 | data->args.offset = data->mds_offset; | |
3223 | data->ds_clp = NULL; | |
3224 | data->args.fh = NFS_FH(data->inode); | |
3225 | data->read_done_cb = nfs4_read_done_cb; | |
3226 | task->tk_ops = data->mds_ops; | |
3227 | rpc_task_reset_client(task, NFS_CLIENT(data->inode)); | |
3228 | } | |
3229 | EXPORT_SYMBOL_GPL(nfs4_reset_read); | |
3230 | ||
b029bc9b | 3231 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3232 | { |
1da177e4 LT |
3233 | struct inode *inode = data->inode; |
3234 | ||
9e33bed5 | 3235 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
0110ee15 | 3236 | nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client); |
788e7a89 | 3237 | return -EAGAIN; |
1da177e4 | 3238 | } |
4f9838c7 | 3239 | if (task->tk_status >= 0) { |
1da177e4 | 3240 | renew_lease(NFS_SERVER(inode), data->timestamp); |
70ca8852 | 3241 | nfs_post_op_update_inode_force_wcc(inode, data->res.fattr); |
4f9838c7 | 3242 | } |
788e7a89 | 3243 | return 0; |
1da177e4 LT |
3244 | } |
3245 | ||
b029bc9b FI |
3246 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3247 | { | |
3248 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3249 | return -EAGAIN; | |
d20581aa BH |
3250 | return data->write_done_cb ? data->write_done_cb(task, data) : |
3251 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
3252 | } |
3253 | ||
a69aef14 FI |
3254 | /* Reset the the nfs_write_data to send the write to the MDS. */ |
3255 | void nfs4_reset_write(struct rpc_task *task, struct nfs_write_data *data) | |
3256 | { | |
3257 | dprintk("%s Reset task for i/o through\n", __func__); | |
3258 | put_lseg(data->lseg); | |
3259 | data->lseg = NULL; | |
3260 | data->ds_clp = NULL; | |
3261 | data->write_done_cb = nfs4_write_done_cb; | |
3262 | data->args.fh = NFS_FH(data->inode); | |
3263 | data->args.bitmask = data->res.server->cache_consistency_bitmask; | |
3264 | data->args.offset = data->mds_offset; | |
3265 | data->res.fattr = &data->fattr; | |
3266 | task->tk_ops = data->mds_ops; | |
3267 | rpc_task_reset_client(task, NFS_CLIENT(data->inode)); | |
3268 | } | |
3269 | EXPORT_SYMBOL_GPL(nfs4_reset_write); | |
3270 | ||
bdc7f021 | 3271 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3272 | { |
bdc7f021 TM |
3273 | struct nfs_server *server = NFS_SERVER(data->inode); |
3274 | ||
7ffd1064 FI |
3275 | if (data->lseg) { |
3276 | data->args.bitmask = NULL; | |
3277 | data->res.fattr = NULL; | |
3278 | } else | |
3279 | data->args.bitmask = server->cache_consistency_bitmask; | |
b029bc9b FI |
3280 | if (!data->write_done_cb) |
3281 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3282 | data->res.server = server; |
1da177e4 LT |
3283 | data->timestamp = jiffies; |
3284 | ||
bdc7f021 | 3285 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
1da177e4 LT |
3286 | } |
3287 | ||
5f452431 | 3288 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3289 | { |
1da177e4 | 3290 | struct inode *inode = data->inode; |
14516c3a | 3291 | |
9e33bed5 | 3292 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
0110ee15 | 3293 | nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client); |
788e7a89 | 3294 | return -EAGAIN; |
1da177e4 | 3295 | } |
9e08a3c5 | 3296 | nfs_refresh_inode(inode, data->res.fattr); |
788e7a89 | 3297 | return 0; |
1da177e4 LT |
3298 | } |
3299 | ||
5f452431 FI |
3300 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data) |
3301 | { | |
3302 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3303 | return -EAGAIN; | |
3304 | return data->write_done_cb(task, data); | |
3305 | } | |
3306 | ||
bdc7f021 | 3307 | static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3308 | { |
788e7a89 | 3309 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce FI |
3310 | |
3311 | if (data->lseg) { | |
3312 | data->args.bitmask = NULL; | |
3313 | data->res.fattr = NULL; | |
3314 | } else | |
3315 | data->args.bitmask = server->cache_consistency_bitmask; | |
5f452431 FI |
3316 | if (!data->write_done_cb) |
3317 | data->write_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 3318 | data->res.server = server; |
bdc7f021 | 3319 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
1da177e4 LT |
3320 | } |
3321 | ||
9bc4e3ca CL |
3322 | struct nfs4_renewdata { |
3323 | struct nfs_client *client; | |
3324 | unsigned long timestamp; | |
3325 | }; | |
3326 | ||
1da177e4 LT |
3327 | /* |
3328 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3329 | * standalone procedure for queueing an asynchronous RENEW. | |
3330 | */ | |
9bc4e3ca | 3331 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3332 | { |
9bc4e3ca CL |
3333 | struct nfs4_renewdata *data = calldata; |
3334 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3335 | |
0851de06 AB |
3336 | if (atomic_read(&clp->cl_count) > 1) |
3337 | nfs4_schedule_state_renewal(clp); | |
3338 | nfs_put_client(clp); | |
9bc4e3ca | 3339 | kfree(data); |
dc96aef9 AB |
3340 | } |
3341 | ||
9bc4e3ca | 3342 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3343 | { |
9bc4e3ca CL |
3344 | struct nfs4_renewdata *data = calldata; |
3345 | struct nfs_client *clp = data->client; | |
3346 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3347 | |
3348 | if (task->tk_status < 0) { | |
95baa25c | 3349 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
3350 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
3351 | return; | |
3352 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 3353 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
3354 | return; |
3355 | } | |
3356 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 3357 | } |
452e9352 | 3358 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3359 | } |
3360 | ||
963d8fe5 TM |
3361 | static const struct rpc_call_ops nfs4_renew_ops = { |
3362 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3363 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3364 | }; |
3365 | ||
2f60ea6b | 3366 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
3367 | { |
3368 | struct rpc_message msg = { | |
3369 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3370 | .rpc_argp = clp, | |
b4454fe1 | 3371 | .rpc_cred = cred, |
1da177e4 | 3372 | }; |
9bc4e3ca | 3373 | struct nfs4_renewdata *data; |
1da177e4 | 3374 | |
2f60ea6b TM |
3375 | if (renew_flags == 0) |
3376 | return 0; | |
0851de06 AB |
3377 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3378 | return -EIO; | |
b569ad34 | 3379 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
3380 | if (data == NULL) |
3381 | return -ENOMEM; | |
3382 | data->client = clp; | |
3383 | data->timestamp = jiffies; | |
1da177e4 | 3384 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, |
9bc4e3ca | 3385 | &nfs4_renew_ops, data); |
1da177e4 LT |
3386 | } |
3387 | ||
8534d4ec | 3388 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3389 | { |
3390 | struct rpc_message msg = { | |
3391 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3392 | .rpc_argp = clp, | |
b4454fe1 | 3393 | .rpc_cred = cred, |
1da177e4 LT |
3394 | }; |
3395 | unsigned long now = jiffies; | |
3396 | int status; | |
3397 | ||
3398 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3399 | if (status < 0) | |
3400 | return status; | |
452e9352 | 3401 | do_renew_lease(clp, now); |
1da177e4 LT |
3402 | return 0; |
3403 | } | |
3404 | ||
aa1870af BF |
3405 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3406 | { | |
3407 | return (server->caps & NFS_CAP_ACLS) | |
3408 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3409 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3410 | } | |
3411 | ||
3412 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that | |
3413 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on | |
3414 | * the stack. | |
3415 | */ | |
3416 | #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT) | |
3417 | ||
3418 | static void buf_to_pages(const void *buf, size_t buflen, | |
3419 | struct page **pages, unsigned int *pgbase) | |
3420 | { | |
3421 | const void *p = buf; | |
3422 | ||
3423 | *pgbase = offset_in_page(buf); | |
3424 | p -= *pgbase; | |
3425 | while (p < buf + buflen) { | |
3426 | *(pages++) = virt_to_page(p); | |
3427 | p += PAGE_CACHE_SIZE; | |
3428 | } | |
3429 | } | |
3430 | ||
e9e3d724 NH |
3431 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
3432 | struct page **pages, unsigned int *pgbase) | |
3433 | { | |
3434 | struct page *newpage, **spages; | |
3435 | int rc = 0; | |
3436 | size_t len; | |
3437 | spages = pages; | |
3438 | ||
3439 | do { | |
43b7c3f0 | 3440 | len = min_t(size_t, PAGE_CACHE_SIZE, buflen); |
e9e3d724 NH |
3441 | newpage = alloc_page(GFP_KERNEL); |
3442 | ||
3443 | if (newpage == NULL) | |
3444 | goto unwind; | |
3445 | memcpy(page_address(newpage), buf, len); | |
3446 | buf += len; | |
3447 | buflen -= len; | |
3448 | *pages++ = newpage; | |
3449 | rc++; | |
3450 | } while (buflen != 0); | |
3451 | ||
3452 | return rc; | |
3453 | ||
3454 | unwind: | |
3455 | for(; rc > 0; rc--) | |
3456 | __free_page(spages[rc-1]); | |
3457 | return -ENOMEM; | |
3458 | } | |
3459 | ||
e50a1c2e BF |
3460 | struct nfs4_cached_acl { |
3461 | int cached; | |
3462 | size_t len; | |
3e9d4154 | 3463 | char data[0]; |
e50a1c2e BF |
3464 | }; |
3465 | ||
3466 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3467 | { | |
3468 | struct nfs_inode *nfsi = NFS_I(inode); | |
3469 | ||
3470 | spin_lock(&inode->i_lock); | |
3471 | kfree(nfsi->nfs4_acl); | |
3472 | nfsi->nfs4_acl = acl; | |
3473 | spin_unlock(&inode->i_lock); | |
3474 | } | |
3475 | ||
3476 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3477 | { | |
3478 | nfs4_set_cached_acl(inode, NULL); | |
3479 | } | |
3480 | ||
3481 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3482 | { | |
3483 | struct nfs_inode *nfsi = NFS_I(inode); | |
3484 | struct nfs4_cached_acl *acl; | |
3485 | int ret = -ENOENT; | |
3486 | ||
3487 | spin_lock(&inode->i_lock); | |
3488 | acl = nfsi->nfs4_acl; | |
3489 | if (acl == NULL) | |
3490 | goto out; | |
3491 | if (buf == NULL) /* user is just asking for length */ | |
3492 | goto out_len; | |
3493 | if (acl->cached == 0) | |
3494 | goto out; | |
3495 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3496 | if (acl->len > buflen) | |
3497 | goto out; | |
3498 | memcpy(buf, acl->data, acl->len); | |
3499 | out_len: | |
3500 | ret = acl->len; | |
3501 | out: | |
3502 | spin_unlock(&inode->i_lock); | |
3503 | return ret; | |
3504 | } | |
3505 | ||
3506 | static void nfs4_write_cached_acl(struct inode *inode, const char *buf, size_t acl_len) | |
3507 | { | |
3508 | struct nfs4_cached_acl *acl; | |
3509 | ||
3510 | if (buf && acl_len <= PAGE_SIZE) { | |
3511 | acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL); | |
3512 | if (acl == NULL) | |
3513 | goto out; | |
3514 | acl->cached = 1; | |
3515 | memcpy(acl->data, buf, acl_len); | |
3516 | } else { | |
3517 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3518 | if (acl == NULL) | |
3519 | goto out; | |
3520 | acl->cached = 0; | |
3521 | } | |
3522 | acl->len = acl_len; | |
3523 | out: | |
3524 | nfs4_set_cached_acl(inode, acl); | |
3525 | } | |
3526 | ||
16b4289c | 3527 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3528 | { |
aa1870af BF |
3529 | struct page *pages[NFS4ACL_MAXPAGES]; |
3530 | struct nfs_getaclargs args = { | |
3531 | .fh = NFS_FH(inode), | |
3532 | .acl_pages = pages, | |
3533 | .acl_len = buflen, | |
3534 | }; | |
663c79b3 BH |
3535 | struct nfs_getaclres res = { |
3536 | .acl_len = buflen, | |
3537 | }; | |
e50a1c2e | 3538 | void *resp_buf; |
aa1870af BF |
3539 | struct rpc_message msg = { |
3540 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3541 | .rpc_argp = &args, | |
663c79b3 | 3542 | .rpc_resp = &res, |
aa1870af | 3543 | }; |
e50a1c2e | 3544 | struct page *localpage = NULL; |
aa1870af BF |
3545 | int ret; |
3546 | ||
e50a1c2e BF |
3547 | if (buflen < PAGE_SIZE) { |
3548 | /* As long as we're doing a round trip to the server anyway, | |
3549 | * let's be prepared for a page of acl data. */ | |
3550 | localpage = alloc_page(GFP_KERNEL); | |
3551 | resp_buf = page_address(localpage); | |
3552 | if (localpage == NULL) | |
3553 | return -ENOMEM; | |
3554 | args.acl_pages[0] = localpage; | |
3555 | args.acl_pgbase = 0; | |
663c79b3 | 3556 | args.acl_len = PAGE_SIZE; |
e50a1c2e BF |
3557 | } else { |
3558 | resp_buf = buf; | |
3559 | buf_to_pages(buf, buflen, args.acl_pages, &args.acl_pgbase); | |
3560 | } | |
7c513058 | 3561 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
e50a1c2e BF |
3562 | if (ret) |
3563 | goto out_free; | |
663c79b3 BH |
3564 | if (res.acl_len > args.acl_len) |
3565 | nfs4_write_cached_acl(inode, NULL, res.acl_len); | |
e50a1c2e | 3566 | else |
663c79b3 | 3567 | nfs4_write_cached_acl(inode, resp_buf, res.acl_len); |
e50a1c2e BF |
3568 | if (buf) { |
3569 | ret = -ERANGE; | |
663c79b3 | 3570 | if (res.acl_len > buflen) |
e50a1c2e BF |
3571 | goto out_free; |
3572 | if (localpage) | |
663c79b3 | 3573 | memcpy(buf, resp_buf, res.acl_len); |
e50a1c2e | 3574 | } |
663c79b3 | 3575 | ret = res.acl_len; |
e50a1c2e BF |
3576 | out_free: |
3577 | if (localpage) | |
3578 | __free_page(localpage); | |
aa1870af BF |
3579 | return ret; |
3580 | } | |
3581 | ||
16b4289c TM |
3582 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
3583 | { | |
3584 | struct nfs4_exception exception = { }; | |
3585 | ssize_t ret; | |
3586 | do { | |
3587 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
3588 | if (ret >= 0) | |
3589 | break; | |
3590 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
3591 | } while (exception.retry); | |
3592 | return ret; | |
3593 | } | |
3594 | ||
e50a1c2e BF |
3595 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
3596 | { | |
3597 | struct nfs_server *server = NFS_SERVER(inode); | |
3598 | int ret; | |
3599 | ||
3600 | if (!nfs4_server_supports_acls(server)) | |
3601 | return -EOPNOTSUPP; | |
3602 | ret = nfs_revalidate_inode(server, inode); | |
3603 | if (ret < 0) | |
3604 | return ret; | |
08a22b39 AK |
3605 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
3606 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
3607 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
3608 | if (ret != -ENOENT) | |
3609 | return ret; | |
3610 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
3611 | } | |
3612 | ||
16b4289c | 3613 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
3614 | { |
3615 | struct nfs_server *server = NFS_SERVER(inode); | |
3616 | struct page *pages[NFS4ACL_MAXPAGES]; | |
3617 | struct nfs_setaclargs arg = { | |
3618 | .fh = NFS_FH(inode), | |
3619 | .acl_pages = pages, | |
3620 | .acl_len = buflen, | |
3621 | }; | |
73c403a9 | 3622 | struct nfs_setaclres res; |
4b580ee3 BF |
3623 | struct rpc_message msg = { |
3624 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
3625 | .rpc_argp = &arg, | |
73c403a9 | 3626 | .rpc_resp = &res, |
4b580ee3 | 3627 | }; |
e9e3d724 | 3628 | int ret, i; |
4b580ee3 BF |
3629 | |
3630 | if (!nfs4_server_supports_acls(server)) | |
3631 | return -EOPNOTSUPP; | |
e9e3d724 NH |
3632 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
3633 | if (i < 0) | |
3634 | return i; | |
642ac549 | 3635 | nfs_inode_return_delegation(inode); |
7c513058 | 3636 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
3637 | |
3638 | /* | |
3639 | * Free each page after tx, so the only ref left is | |
3640 | * held by the network stack | |
3641 | */ | |
3642 | for (; i > 0; i--) | |
3643 | put_page(pages[i-1]); | |
3644 | ||
08a22b39 AK |
3645 | /* |
3646 | * Acl update can result in inode attribute update. | |
3647 | * so mark the attribute cache invalid. | |
3648 | */ | |
3649 | spin_lock(&inode->i_lock); | |
3650 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
3651 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
3652 | nfs_access_zap_cache(inode); |
3653 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
3654 | return ret; |
3655 | } | |
3656 | ||
16b4289c TM |
3657 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
3658 | { | |
3659 | struct nfs4_exception exception = { }; | |
3660 | int err; | |
3661 | do { | |
3662 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3663 | __nfs4_proc_set_acl(inode, buf, buflen), | |
3664 | &exception); | |
3665 | } while (exception.retry); | |
3666 | return err; | |
3667 | } | |
3668 | ||
1da177e4 | 3669 | static int |
aa5190d0 | 3670 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 3671 | { |
aa5190d0 TM |
3672 | struct nfs_client *clp = server->nfs_client; |
3673 | ||
3674 | if (task->tk_status >= 0) | |
1da177e4 LT |
3675 | return 0; |
3676 | switch(task->tk_status) { | |
9e33bed5 TM |
3677 | case -NFS4ERR_ADMIN_REVOKED: |
3678 | case -NFS4ERR_BAD_STATEID: | |
3679 | case -NFS4ERR_OPENMODE: | |
3680 | if (state == NULL) | |
3681 | break; | |
0400a6b0 TM |
3682 | nfs4_schedule_stateid_recovery(server, state); |
3683 | goto wait_on_recovery; | |
0ced63d1 TM |
3684 | case -NFS4ERR_EXPIRED: |
3685 | if (state != NULL) | |
3686 | nfs4_schedule_stateid_recovery(server, state); | |
1da177e4 | 3687 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 3688 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
3689 | nfs4_schedule_lease_recovery(clp); |
3690 | goto wait_on_recovery; | |
4745e315 AA |
3691 | #if defined(CONFIG_NFS_V4_1) |
3692 | case -NFS4ERR_BADSESSION: | |
3693 | case -NFS4ERR_BADSLOT: | |
3694 | case -NFS4ERR_BAD_HIGH_SLOT: | |
3695 | case -NFS4ERR_DEADSESSION: | |
3696 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
3697 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
3698 | case -NFS4ERR_SEQ_MISORDERED: | |
3699 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
3700 | task->tk_status); | |
0400a6b0 | 3701 | nfs4_schedule_session_recovery(clp->cl_session); |
4745e315 AA |
3702 | task->tk_status = 0; |
3703 | return -EAGAIN; | |
3704 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 3705 | case -NFS4ERR_DELAY: |
aa5190d0 | 3706 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 3707 | case -NFS4ERR_GRACE: |
2c643488 | 3708 | case -EKEYEXPIRED: |
1da177e4 LT |
3709 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
3710 | task->tk_status = 0; | |
3711 | return -EAGAIN; | |
a8a4ae3a | 3712 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
3713 | case -NFS4ERR_OLD_STATEID: |
3714 | task->tk_status = 0; | |
3715 | return -EAGAIN; | |
3716 | } | |
3717 | task->tk_status = nfs4_map_errors(task->tk_status); | |
3718 | return 0; | |
0400a6b0 | 3719 | wait_on_recovery: |
a2c0b9e2 | 3720 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
3721 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
3722 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
3723 | task->tk_status = 0; | |
3724 | return -EAGAIN; | |
1da177e4 LT |
3725 | } |
3726 | ||
bb8b27e5 TM |
3727 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
3728 | unsigned short port, struct rpc_cred *cred, | |
3729 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
3730 | { |
3731 | nfs4_verifier sc_verifier; | |
3732 | struct nfs4_setclientid setclientid = { | |
3733 | .sc_verifier = &sc_verifier, | |
3734 | .sc_prog = program, | |
f4eecd5d | 3735 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
3736 | }; |
3737 | struct rpc_message msg = { | |
3738 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
3739 | .rpc_argp = &setclientid, | |
bb8b27e5 | 3740 | .rpc_resp = res, |
286d7d6a | 3741 | .rpc_cred = cred, |
1da177e4 | 3742 | }; |
bc4785cd | 3743 | __be32 *p; |
1da177e4 LT |
3744 | int loop = 0; |
3745 | int status; | |
3746 | ||
bc4785cd | 3747 | p = (__be32*)sc_verifier.data; |
1da177e4 LT |
3748 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); |
3749 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
3750 | ||
3751 | for(;;) { | |
3752 | setclientid.sc_name_len = scnprintf(setclientid.sc_name, | |
69dd716c | 3753 | sizeof(setclientid.sc_name), "%s/%s %s %s %u", |
d4d3c507 CL |
3754 | clp->cl_ipaddr, |
3755 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3756 | RPC_DISPLAY_ADDR), | |
69dd716c TM |
3757 | rpc_peeraddr2str(clp->cl_rpcclient, |
3758 | RPC_DISPLAY_PROTO), | |
78ea323b | 3759 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
1da177e4 LT |
3760 | clp->cl_id_uniquifier); |
3761 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, | |
d4d3c507 CL |
3762 | sizeof(setclientid.sc_netid), |
3763 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3764 | RPC_DISPLAY_NETID)); | |
1da177e4 | 3765 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 3766 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
3767 | clp->cl_ipaddr, port >> 8, port & 255); |
3768 | ||
1bd714f2 | 3769 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
3770 | if (status != -NFS4ERR_CLID_INUSE) |
3771 | break; | |
fd954ae1 TM |
3772 | if (loop != 0) { |
3773 | ++clp->cl_id_uniquifier; | |
1da177e4 | 3774 | break; |
fd954ae1 TM |
3775 | } |
3776 | ++loop; | |
3777 | ssleep(clp->cl_lease_time / HZ + 1); | |
1da177e4 LT |
3778 | } |
3779 | return status; | |
3780 | } | |
3781 | ||
fd954ae1 | 3782 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
3783 | struct nfs4_setclientid_res *arg, |
3784 | struct rpc_cred *cred) | |
1da177e4 LT |
3785 | { |
3786 | struct nfs_fsinfo fsinfo; | |
3787 | struct rpc_message msg = { | |
3788 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 3789 | .rpc_argp = arg, |
1da177e4 | 3790 | .rpc_resp = &fsinfo, |
286d7d6a | 3791 | .rpc_cred = cred, |
1da177e4 LT |
3792 | }; |
3793 | unsigned long now; | |
3794 | int status; | |
3795 | ||
3796 | now = jiffies; | |
1bd714f2 | 3797 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
3798 | if (status == 0) { |
3799 | spin_lock(&clp->cl_lock); | |
3800 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
3801 | clp->cl_last_renewal = now; | |
3802 | spin_unlock(&clp->cl_lock); | |
3803 | } | |
3804 | return status; | |
3805 | } | |
3806 | ||
fe650407 TM |
3807 | struct nfs4_delegreturndata { |
3808 | struct nfs4_delegreturnargs args; | |
fa178f29 | 3809 | struct nfs4_delegreturnres res; |
fe650407 TM |
3810 | struct nfs_fh fh; |
3811 | nfs4_stateid stateid; | |
26e976a8 | 3812 | unsigned long timestamp; |
fa178f29 | 3813 | struct nfs_fattr fattr; |
fe650407 TM |
3814 | int rpc_status; |
3815 | }; | |
3816 | ||
fe650407 TM |
3817 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
3818 | { | |
3819 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 3820 | |
14516c3a TM |
3821 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
3822 | return; | |
938e1010 | 3823 | |
79708861 RL |
3824 | switch (task->tk_status) { |
3825 | case -NFS4ERR_STALE_STATEID: | |
3826 | case -NFS4ERR_EXPIRED: | |
3827 | case 0: | |
fa178f29 | 3828 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
3829 | break; |
3830 | default: | |
3831 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
3832 | -EAGAIN) { | |
3833 | nfs_restart_rpc(task, data->res.server->nfs_client); | |
3834 | return; | |
3835 | } | |
3836 | } | |
3837 | data->rpc_status = task->tk_status; | |
fe650407 TM |
3838 | } |
3839 | ||
3840 | static void nfs4_delegreturn_release(void *calldata) | |
3841 | { | |
fe650407 TM |
3842 | kfree(calldata); |
3843 | } | |
3844 | ||
938e1010 AA |
3845 | #if defined(CONFIG_NFS_V4_1) |
3846 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
3847 | { | |
3848 | struct nfs4_delegreturndata *d_data; | |
3849 | ||
3850 | d_data = (struct nfs4_delegreturndata *)data; | |
3851 | ||
035168ab | 3852 | if (nfs4_setup_sequence(d_data->res.server, |
938e1010 AA |
3853 | &d_data->args.seq_args, |
3854 | &d_data->res.seq_res, 1, task)) | |
3855 | return; | |
3856 | rpc_call_start(task); | |
3857 | } | |
3858 | #endif /* CONFIG_NFS_V4_1 */ | |
3859 | ||
c8d149f3 | 3860 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
3861 | #if defined(CONFIG_NFS_V4_1) |
3862 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
3863 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
3864 | .rpc_call_done = nfs4_delegreturn_done, |
3865 | .rpc_release = nfs4_delegreturn_release, | |
3866 | }; | |
3867 | ||
e6f81075 | 3868 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
3869 | { |
3870 | struct nfs4_delegreturndata *data; | |
fa178f29 | 3871 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 3872 | struct rpc_task *task; |
5138fde0 TM |
3873 | struct rpc_message msg = { |
3874 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
3875 | .rpc_cred = cred, | |
3876 | }; | |
c970aa85 TM |
3877 | struct rpc_task_setup task_setup_data = { |
3878 | .rpc_client = server->client, | |
5138fde0 | 3879 | .rpc_message = &msg, |
c970aa85 TM |
3880 | .callback_ops = &nfs4_delegreturn_ops, |
3881 | .flags = RPC_TASK_ASYNC, | |
3882 | }; | |
e6f81075 | 3883 | int status = 0; |
fe650407 | 3884 | |
8535b2be | 3885 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
3886 | if (data == NULL) |
3887 | return -ENOMEM; | |
3888 | data->args.fhandle = &data->fh; | |
3889 | data->args.stateid = &data->stateid; | |
fa178f29 | 3890 | data->args.bitmask = server->attr_bitmask; |
fe650407 TM |
3891 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
3892 | memcpy(&data->stateid, stateid, sizeof(data->stateid)); | |
fa178f29 TM |
3893 | data->res.fattr = &data->fattr; |
3894 | data->res.server = server; | |
5138fde0 | 3895 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 3896 | data->timestamp = jiffies; |
fe650407 TM |
3897 | data->rpc_status = 0; |
3898 | ||
c970aa85 | 3899 | task_setup_data.callback_data = data; |
1174dd1f TM |
3900 | msg.rpc_argp = &data->args; |
3901 | msg.rpc_resp = &data->res; | |
c970aa85 | 3902 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 3903 | if (IS_ERR(task)) |
fe650407 | 3904 | return PTR_ERR(task); |
e6f81075 TM |
3905 | if (!issync) |
3906 | goto out; | |
fe650407 | 3907 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
3908 | if (status != 0) |
3909 | goto out; | |
3910 | status = data->rpc_status; | |
3911 | if (status != 0) | |
3912 | goto out; | |
3913 | nfs_refresh_inode(inode, &data->fattr); | |
3914 | out: | |
e6b3c4db | 3915 | rpc_put_task(task); |
fe650407 | 3916 | return status; |
1da177e4 LT |
3917 | } |
3918 | ||
e6f81075 | 3919 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
3920 | { |
3921 | struct nfs_server *server = NFS_SERVER(inode); | |
3922 | struct nfs4_exception exception = { }; | |
3923 | int err; | |
3924 | do { | |
e6f81075 | 3925 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
3926 | switch (err) { |
3927 | case -NFS4ERR_STALE_STATEID: | |
3928 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
3929 | case 0: |
3930 | return 0; | |
3931 | } | |
3932 | err = nfs4_handle_exception(server, err, &exception); | |
3933 | } while (exception.retry); | |
3934 | return err; | |
3935 | } | |
3936 | ||
3937 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
3938 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
3939 | ||
3940 | /* | |
3941 | * sleep, with exponential backoff, and retry the LOCK operation. | |
3942 | */ | |
3943 | static unsigned long | |
3944 | nfs4_set_lock_task_retry(unsigned long timeout) | |
3945 | { | |
150030b7 | 3946 | schedule_timeout_killable(timeout); |
1da177e4 LT |
3947 | timeout <<= 1; |
3948 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
3949 | return NFS4_LOCK_MAXTIMEOUT; | |
3950 | return timeout; | |
3951 | } | |
3952 | ||
1da177e4 LT |
3953 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
3954 | { | |
3955 | struct inode *inode = state->inode; | |
3956 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 3957 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 3958 | struct nfs_lockt_args arg = { |
1da177e4 | 3959 | .fh = NFS_FH(inode), |
911d1aaf | 3960 | .fl = request, |
1da177e4 | 3961 | }; |
911d1aaf TM |
3962 | struct nfs_lockt_res res = { |
3963 | .denied = request, | |
1da177e4 LT |
3964 | }; |
3965 | struct rpc_message msg = { | |
3966 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
3967 | .rpc_argp = &arg, | |
3968 | .rpc_resp = &res, | |
3969 | .rpc_cred = state->owner->so_cred, | |
3970 | }; | |
1da177e4 LT |
3971 | struct nfs4_lock_state *lsp; |
3972 | int status; | |
3973 | ||
911d1aaf | 3974 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
3975 | status = nfs4_set_lock_state(state, request); |
3976 | if (status != 0) | |
3977 | goto out; | |
3978 | lsp = request->fl_u.nfs4_fl.owner; | |
9f958ab8 | 3979 | arg.lock_owner.id = lsp->ls_id.id; |
d035c36c | 3980 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 3981 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
3982 | switch (status) { |
3983 | case 0: | |
3984 | request->fl_type = F_UNLCK; | |
3985 | break; | |
3986 | case -NFS4ERR_DENIED: | |
3987 | status = 0; | |
1da177e4 | 3988 | } |
70cc6487 | 3989 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 3990 | out: |
1da177e4 LT |
3991 | return status; |
3992 | } | |
3993 | ||
3994 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
3995 | { | |
3996 | struct nfs4_exception exception = { }; | |
3997 | int err; | |
3998 | ||
3999 | do { | |
4000 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
4001 | _nfs4_proc_getlk(state, cmd, request), | |
4002 | &exception); | |
4003 | } while (exception.retry); | |
4004 | return err; | |
4005 | } | |
4006 | ||
4007 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
4008 | { | |
4009 | int res = 0; | |
4010 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
4011 | case FL_POSIX: | |
4012 | res = posix_lock_file_wait(file, fl); | |
4013 | break; | |
4014 | case FL_FLOCK: | |
4015 | res = flock_lock_file_wait(file, fl); | |
4016 | break; | |
4017 | default: | |
4018 | BUG(); | |
4019 | } | |
1da177e4 LT |
4020 | return res; |
4021 | } | |
4022 | ||
faf5f49c | 4023 | struct nfs4_unlockdata { |
911d1aaf TM |
4024 | struct nfs_locku_args arg; |
4025 | struct nfs_locku_res res; | |
faf5f49c TM |
4026 | struct nfs4_lock_state *lsp; |
4027 | struct nfs_open_context *ctx; | |
911d1aaf TM |
4028 | struct file_lock fl; |
4029 | const struct nfs_server *server; | |
26e976a8 | 4030 | unsigned long timestamp; |
faf5f49c TM |
4031 | }; |
4032 | ||
911d1aaf TM |
4033 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
4034 | struct nfs_open_context *ctx, | |
4035 | struct nfs4_lock_state *lsp, | |
4036 | struct nfs_seqid *seqid) | |
4037 | { | |
4038 | struct nfs4_unlockdata *p; | |
4039 | struct inode *inode = lsp->ls_state->inode; | |
4040 | ||
8535b2be | 4041 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
4042 | if (p == NULL) |
4043 | return NULL; | |
4044 | p->arg.fh = NFS_FH(inode); | |
4045 | p->arg.fl = &p->fl; | |
4046 | p->arg.seqid = seqid; | |
c1d51931 | 4047 | p->res.seqid = seqid; |
911d1aaf TM |
4048 | p->arg.stateid = &lsp->ls_stateid; |
4049 | p->lsp = lsp; | |
4050 | atomic_inc(&lsp->ls_count); | |
4051 | /* Ensure we don't close file until we're done freeing locks! */ | |
4052 | p->ctx = get_nfs_open_context(ctx); | |
4053 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4054 | p->server = NFS_SERVER(inode); | |
4055 | return p; | |
4056 | } | |
4057 | ||
06f814a3 | 4058 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 4059 | { |
963d8fe5 | 4060 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 4061 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
4062 | nfs4_put_lock_state(calldata->lsp); |
4063 | put_nfs_open_context(calldata->ctx); | |
4064 | kfree(calldata); | |
faf5f49c TM |
4065 | } |
4066 | ||
963d8fe5 | 4067 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 4068 | { |
963d8fe5 | 4069 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4070 | |
14516c3a TM |
4071 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
4072 | return; | |
faf5f49c TM |
4073 | switch (task->tk_status) { |
4074 | case 0: | |
4075 | memcpy(calldata->lsp->ls_stateid.data, | |
911d1aaf | 4076 | calldata->res.stateid.data, |
faf5f49c | 4077 | sizeof(calldata->lsp->ls_stateid.data)); |
26e976a8 | 4078 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 4079 | break; |
9e33bed5 TM |
4080 | case -NFS4ERR_BAD_STATEID: |
4081 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
4082 | case -NFS4ERR_STALE_STATEID: |
4083 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
4084 | break; |
4085 | default: | |
9e33bed5 | 4086 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
0110ee15 | 4087 | nfs_restart_rpc(task, |
d61e612a | 4088 | calldata->server->nfs_client); |
faf5f49c | 4089 | } |
faf5f49c TM |
4090 | } |
4091 | ||
4ce70ada | 4092 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 4093 | { |
4ce70ada | 4094 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4095 | |
911d1aaf | 4096 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c TM |
4097 | return; |
4098 | if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) { | |
963d8fe5 TM |
4099 | /* Note: exit _without_ running nfs4_locku_done */ |
4100 | task->tk_action = NULL; | |
faf5f49c TM |
4101 | return; |
4102 | } | |
26e976a8 | 4103 | calldata->timestamp = jiffies; |
035168ab | 4104 | if (nfs4_setup_sequence(calldata->server, |
a893693c AA |
4105 | &calldata->arg.seq_args, |
4106 | &calldata->res.seq_res, 1, task)) | |
4107 | return; | |
5138fde0 | 4108 | rpc_call_start(task); |
faf5f49c TM |
4109 | } |
4110 | ||
963d8fe5 | 4111 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 4112 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 4113 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 4114 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
4115 | }; |
4116 | ||
a5d16a4d TM |
4117 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
4118 | struct nfs_open_context *ctx, | |
4119 | struct nfs4_lock_state *lsp, | |
4120 | struct nfs_seqid *seqid) | |
4121 | { | |
4122 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
4123 | struct rpc_message msg = { |
4124 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
4125 | .rpc_cred = ctx->cred, | |
4126 | }; | |
c970aa85 TM |
4127 | struct rpc_task_setup task_setup_data = { |
4128 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 4129 | .rpc_message = &msg, |
c970aa85 | 4130 | .callback_ops = &nfs4_locku_ops, |
101070ca | 4131 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4132 | .flags = RPC_TASK_ASYNC, |
4133 | }; | |
a5d16a4d | 4134 | |
137d6aca FF |
4135 | /* Ensure this is an unlock - when canceling a lock, the |
4136 | * canceled lock is passed in, and it won't be an unlock. | |
4137 | */ | |
4138 | fl->fl_type = F_UNLCK; | |
4139 | ||
a5d16a4d TM |
4140 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
4141 | if (data == NULL) { | |
4142 | nfs_free_seqid(seqid); | |
4143 | return ERR_PTR(-ENOMEM); | |
4144 | } | |
4145 | ||
1174dd1f TM |
4146 | msg.rpc_argp = &data->arg; |
4147 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4148 | task_setup_data.callback_data = data; |
4149 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
4150 | } |
4151 | ||
faf5f49c TM |
4152 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
4153 | { | |
19e03c57 | 4154 | struct nfs_inode *nfsi = NFS_I(state->inode); |
911d1aaf | 4155 | struct nfs_seqid *seqid; |
1da177e4 | 4156 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
4157 | struct rpc_task *task; |
4158 | int status = 0; | |
536ff0f8 | 4159 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 4160 | |
8d0a8a9d | 4161 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
4162 | /* Unlock _before_ we do the RPC call */ |
4163 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
4164 | down_read(&nfsi->rwsem); |
4165 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
4166 | up_read(&nfsi->rwsem); | |
9b073574 | 4167 | goto out; |
19e03c57 TM |
4168 | } |
4169 | up_read(&nfsi->rwsem); | |
8d0a8a9d | 4170 | if (status != 0) |
9b073574 TM |
4171 | goto out; |
4172 | /* Is this a delegated lock? */ | |
4173 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
4174 | goto out; | |
8d0a8a9d | 4175 | lsp = request->fl_u.nfs4_fl.owner; |
8535b2be | 4176 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 4177 | status = -ENOMEM; |
911d1aaf | 4178 | if (seqid == NULL) |
9b073574 | 4179 | goto out; |
cd3758e3 | 4180 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
4181 | status = PTR_ERR(task); |
4182 | if (IS_ERR(task)) | |
9b073574 | 4183 | goto out; |
a5d16a4d | 4184 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 4185 | rpc_put_task(task); |
9b073574 | 4186 | out: |
536ff0f8 | 4187 | request->fl_flags = fl_flags; |
1da177e4 LT |
4188 | return status; |
4189 | } | |
4190 | ||
a5d16a4d TM |
4191 | struct nfs4_lockdata { |
4192 | struct nfs_lock_args arg; | |
4193 | struct nfs_lock_res res; | |
4194 | struct nfs4_lock_state *lsp; | |
4195 | struct nfs_open_context *ctx; | |
4196 | struct file_lock fl; | |
26e976a8 | 4197 | unsigned long timestamp; |
a5d16a4d TM |
4198 | int rpc_status; |
4199 | int cancelled; | |
66179efe | 4200 | struct nfs_server *server; |
a5d16a4d TM |
4201 | }; |
4202 | ||
4203 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
4204 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
4205 | gfp_t gfp_mask) | |
1da177e4 | 4206 | { |
a5d16a4d TM |
4207 | struct nfs4_lockdata *p; |
4208 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 4209 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 4210 | |
8535b2be | 4211 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
4212 | if (p == NULL) |
4213 | return NULL; | |
4214 | ||
4215 | p->arg.fh = NFS_FH(inode); | |
4216 | p->arg.fl = &p->fl; | |
8535b2be | 4217 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4218 | if (p->arg.open_seqid == NULL) |
4219 | goto out_free; | |
8535b2be | 4220 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4221 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4222 | goto out_free_seqid; |
a5d16a4d | 4223 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4224 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 4225 | p->arg.lock_owner.id = lsp->ls_id.id; |
d035c36c | 4226 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 4227 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4228 | p->lsp = lsp; |
66179efe | 4229 | p->server = server; |
a5d16a4d TM |
4230 | atomic_inc(&lsp->ls_count); |
4231 | p->ctx = get_nfs_open_context(ctx); | |
4232 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4233 | return p; | |
2f74c0a0 TM |
4234 | out_free_seqid: |
4235 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4236 | out_free: |
4237 | kfree(p); | |
4238 | return NULL; | |
4239 | } | |
4240 | ||
4241 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4242 | { | |
4243 | struct nfs4_lockdata *data = calldata; | |
4244 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4245 | |
3110ff80 | 4246 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
4247 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
4248 | return; | |
a5d16a4d TM |
4249 | /* Do we need to do an open_to_lock_owner? */ |
4250 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 TM |
4251 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
4252 | return; | |
a5d16a4d TM |
4253 | data->arg.open_stateid = &state->stateid; |
4254 | data->arg.new_lock_owner = 1; | |
c1d51931 | 4255 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4256 | } else |
4257 | data->arg.new_lock_owner = 0; | |
26e976a8 | 4258 | data->timestamp = jiffies; |
035168ab TM |
4259 | if (nfs4_setup_sequence(data->server, |
4260 | &data->arg.seq_args, | |
66179efe AA |
4261 | &data->res.seq_res, 1, task)) |
4262 | return; | |
5138fde0 | 4263 | rpc_call_start(task); |
3110ff80 | 4264 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
a5d16a4d TM |
4265 | } |
4266 | ||
b257957e AB |
4267 | static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata) |
4268 | { | |
4269 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
4270 | nfs4_lock_prepare(task, calldata); | |
4271 | } | |
4272 | ||
a5d16a4d TM |
4273 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4274 | { | |
4275 | struct nfs4_lockdata *data = calldata; | |
4276 | ||
3110ff80 | 4277 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4278 | |
14516c3a TM |
4279 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4280 | return; | |
66179efe | 4281 | |
a5d16a4d | 4282 | data->rpc_status = task->tk_status; |
a5d16a4d | 4283 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4284 | if (data->rpc_status == 0) |
4285 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4286 | else | |
4287 | goto out; | |
4288 | } | |
4289 | if (data->rpc_status == 0) { | |
4290 | memcpy(data->lsp->ls_stateid.data, data->res.stateid.data, | |
4291 | sizeof(data->lsp->ls_stateid.data)); | |
4292 | data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; | |
3d4ff43d | 4293 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 4294 | } |
a5d16a4d | 4295 | out: |
3110ff80 | 4296 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4297 | } |
4298 | ||
4299 | static void nfs4_lock_release(void *calldata) | |
4300 | { | |
4301 | struct nfs4_lockdata *data = calldata; | |
4302 | ||
3110ff80 | 4303 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4304 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4305 | if (data->cancelled != 0) { |
4306 | struct rpc_task *task; | |
4307 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4308 | data->arg.lock_seqid); | |
4309 | if (!IS_ERR(task)) | |
bf294b41 | 4310 | rpc_put_task_async(task); |
3110ff80 | 4311 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4312 | } else |
4313 | nfs_free_seqid(data->arg.lock_seqid); | |
4314 | nfs4_put_lock_state(data->lsp); | |
4315 | put_nfs_open_context(data->ctx); | |
4316 | kfree(data); | |
3110ff80 | 4317 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4318 | } |
4319 | ||
4320 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4321 | .rpc_call_prepare = nfs4_lock_prepare, | |
4322 | .rpc_call_done = nfs4_lock_done, | |
4323 | .rpc_release = nfs4_lock_release, | |
4324 | }; | |
4325 | ||
b257957e AB |
4326 | static const struct rpc_call_ops nfs4_recover_lock_ops = { |
4327 | .rpc_call_prepare = nfs4_recover_lock_prepare, | |
4328 | .rpc_call_done = nfs4_lock_done, | |
4329 | .rpc_release = nfs4_lock_release, | |
4330 | }; | |
4331 | ||
2bee72a6 TM |
4332 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4333 | { | |
2bee72a6 TM |
4334 | switch (error) { |
4335 | case -NFS4ERR_ADMIN_REVOKED: | |
4336 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 4337 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 TM |
4338 | if (new_lock_owner != 0 || |
4339 | (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0) | |
ecac799a | 4340 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
4341 | break; |
4342 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 4343 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
4344 | case -NFS4ERR_EXPIRED: |
4345 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
4346 | }; |
4347 | } | |
4348 | ||
afe6c27c | 4349 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4350 | { |
4351 | struct nfs4_lockdata *data; | |
4352 | struct rpc_task *task; | |
5138fde0 TM |
4353 | struct rpc_message msg = { |
4354 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4355 | .rpc_cred = state->owner->so_cred, | |
4356 | }; | |
c970aa85 TM |
4357 | struct rpc_task_setup task_setup_data = { |
4358 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4359 | .rpc_message = &msg, |
c970aa85 | 4360 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4361 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4362 | .flags = RPC_TASK_ASYNC, |
4363 | }; | |
a5d16a4d TM |
4364 | int ret; |
4365 | ||
3110ff80 | 4366 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4367 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4368 | fl->fl_u.nfs4_fl.owner, |
4369 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4370 | if (data == NULL) |
4371 | return -ENOMEM; | |
4372 | if (IS_SETLKW(cmd)) | |
4373 | data->arg.block = 1; | |
b257957e AB |
4374 | if (recovery_type > NFS_LOCK_NEW) { |
4375 | if (recovery_type == NFS_LOCK_RECLAIM) | |
afe6c27c | 4376 | data->arg.reclaim = NFS_LOCK_RECLAIM; |
b257957e AB |
4377 | task_setup_data.callback_ops = &nfs4_recover_lock_ops; |
4378 | } | |
1174dd1f TM |
4379 | msg.rpc_argp = &data->arg; |
4380 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4381 | task_setup_data.callback_data = data; |
4382 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 4383 | if (IS_ERR(task)) |
a5d16a4d | 4384 | return PTR_ERR(task); |
a5d16a4d TM |
4385 | ret = nfs4_wait_for_completion_rpc_task(task); |
4386 | if (ret == 0) { | |
4387 | ret = data->rpc_status; | |
2bee72a6 TM |
4388 | if (ret) |
4389 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4390 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4391 | } else |
4392 | data->cancelled = 1; | |
e6b3c4db | 4393 | rpc_put_task(task); |
3110ff80 | 4394 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4395 | return ret; |
1da177e4 LT |
4396 | } |
4397 | ||
4398 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4399 | { | |
202b50dc TM |
4400 | struct nfs_server *server = NFS_SERVER(state->inode); |
4401 | struct nfs4_exception exception = { }; | |
4402 | int err; | |
4403 | ||
4404 | do { | |
42a2d13e TM |
4405 | /* Cache the lock if possible... */ |
4406 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4407 | return 0; | |
afe6c27c | 4408 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 4409 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
4410 | break; |
4411 | nfs4_handle_exception(server, err, &exception); | |
4412 | } while (exception.retry); | |
4413 | return err; | |
1da177e4 LT |
4414 | } |
4415 | ||
4416 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4417 | { | |
202b50dc TM |
4418 | struct nfs_server *server = NFS_SERVER(state->inode); |
4419 | struct nfs4_exception exception = { }; | |
4420 | int err; | |
4421 | ||
6bfc93ef TM |
4422 | err = nfs4_set_lock_state(state, request); |
4423 | if (err != 0) | |
4424 | return err; | |
202b50dc | 4425 | do { |
42a2d13e TM |
4426 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4427 | return 0; | |
afe6c27c | 4428 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
4429 | switch (err) { |
4430 | default: | |
4431 | goto out; | |
4432 | case -NFS4ERR_GRACE: | |
4433 | case -NFS4ERR_DELAY: | |
4434 | nfs4_handle_exception(server, err, &exception); | |
4435 | err = 0; | |
4436 | } | |
202b50dc | 4437 | } while (exception.retry); |
a9ed2e25 | 4438 | out: |
202b50dc | 4439 | return err; |
1da177e4 LT |
4440 | } |
4441 | ||
f062eb6c BS |
4442 | #if defined(CONFIG_NFS_V4_1) |
4443 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4444 | { | |
4445 | int status; | |
4446 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4447 | ||
4448 | status = nfs41_test_stateid(server, state); | |
4449 | if (status == NFS_OK) | |
4450 | return 0; | |
4451 | nfs41_free_stateid(server, state); | |
4452 | return nfs4_lock_expired(state, request); | |
4453 | } | |
4454 | #endif | |
4455 | ||
1da177e4 LT |
4456 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4457 | { | |
19e03c57 | 4458 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 4459 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 4460 | int status = -ENOLCK; |
1da177e4 | 4461 | |
8e469ebd TM |
4462 | if ((fl_flags & FL_POSIX) && |
4463 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
4464 | goto out; | |
6bfc93ef | 4465 | /* Is this a delegated open? */ |
6bfc93ef TM |
4466 | status = nfs4_set_lock_state(state, request); |
4467 | if (status != 0) | |
4468 | goto out; | |
01c3b861 TM |
4469 | request->fl_flags |= FL_ACCESS; |
4470 | status = do_vfs_lock(request->fl_file, request); | |
4471 | if (status < 0) | |
4472 | goto out; | |
19e03c57 | 4473 | down_read(&nfsi->rwsem); |
01c3b861 | 4474 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 4475 | /* Yes: cache locks! */ |
01c3b861 | 4476 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
4477 | request->fl_flags = fl_flags & ~FL_SLEEP; |
4478 | status = do_vfs_lock(request->fl_file, request); | |
4479 | goto out_unlock; | |
01c3b861 | 4480 | } |
afe6c27c | 4481 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 4482 | if (status != 0) |
01c3b861 | 4483 | goto out_unlock; |
6bfc93ef | 4484 | /* Note: we always want to sleep here! */ |
01c3b861 | 4485 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 4486 | if (do_vfs_lock(request->fl_file, request) < 0) |
3110ff80 | 4487 | printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __func__); |
01c3b861 | 4488 | out_unlock: |
19e03c57 | 4489 | up_read(&nfsi->rwsem); |
01c3b861 TM |
4490 | out: |
4491 | request->fl_flags = fl_flags; | |
1da177e4 LT |
4492 | return status; |
4493 | } | |
4494 | ||
4495 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4496 | { | |
4497 | struct nfs4_exception exception = { }; | |
4498 | int err; | |
4499 | ||
4500 | do { | |
965b5d67 TM |
4501 | err = _nfs4_proc_setlk(state, cmd, request); |
4502 | if (err == -NFS4ERR_DENIED) | |
4503 | err = -EAGAIN; | |
1da177e4 | 4504 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 4505 | err, &exception); |
1da177e4 LT |
4506 | } while (exception.retry); |
4507 | return err; | |
4508 | } | |
4509 | ||
4510 | static int | |
4511 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
4512 | { | |
4513 | struct nfs_open_context *ctx; | |
4514 | struct nfs4_state *state; | |
4515 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
4516 | int status; | |
4517 | ||
4518 | /* verify open state */ | |
cd3758e3 | 4519 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
4520 | state = ctx->state; |
4521 | ||
4522 | if (request->fl_start < 0 || request->fl_end < 0) | |
4523 | return -EINVAL; | |
4524 | ||
d953126a TM |
4525 | if (IS_GETLK(cmd)) { |
4526 | if (state != NULL) | |
4527 | return nfs4_proc_getlk(state, F_GETLK, request); | |
4528 | return 0; | |
4529 | } | |
1da177e4 LT |
4530 | |
4531 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
4532 | return -EINVAL; | |
4533 | ||
d953126a TM |
4534 | if (request->fl_type == F_UNLCK) { |
4535 | if (state != NULL) | |
4536 | return nfs4_proc_unlck(state, cmd, request); | |
4537 | return 0; | |
4538 | } | |
1da177e4 | 4539 | |
d953126a TM |
4540 | if (state == NULL) |
4541 | return -ENOLCK; | |
1da177e4 LT |
4542 | do { |
4543 | status = nfs4_proc_setlk(state, cmd, request); | |
4544 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
4545 | break; | |
4546 | timeout = nfs4_set_lock_task_retry(timeout); | |
4547 | status = -ERESTARTSYS; | |
4548 | if (signalled()) | |
4549 | break; | |
4550 | } while(status < 0); | |
1da177e4 LT |
4551 | return status; |
4552 | } | |
4553 | ||
888e694c TM |
4554 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
4555 | { | |
4556 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4557 | struct nfs4_exception exception = { }; | |
4558 | int err; | |
4559 | ||
4560 | err = nfs4_set_lock_state(state, fl); | |
4561 | if (err != 0) | |
4562 | goto out; | |
4563 | do { | |
afe6c27c | 4564 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
d5122201 TM |
4565 | switch (err) { |
4566 | default: | |
4567 | printk(KERN_ERR "%s: unhandled error %d.\n", | |
4568 | __func__, err); | |
4569 | case 0: | |
965b5d67 | 4570 | case -ESTALE: |
d5122201 TM |
4571 | goto out; |
4572 | case -NFS4ERR_EXPIRED: | |
0ced63d1 | 4573 | nfs4_schedule_stateid_recovery(server, state); |
d5122201 | 4574 | case -NFS4ERR_STALE_CLIENTID: |
965b5d67 | 4575 | case -NFS4ERR_STALE_STATEID: |
0400a6b0 TM |
4576 | nfs4_schedule_lease_recovery(server->nfs_client); |
4577 | goto out; | |
74e7bb73 RL |
4578 | case -NFS4ERR_BADSESSION: |
4579 | case -NFS4ERR_BADSLOT: | |
4580 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4581 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4582 | case -NFS4ERR_DEADSESSION: | |
0400a6b0 | 4583 | nfs4_schedule_session_recovery(server->nfs_client->cl_session); |
d5122201 | 4584 | goto out; |
965b5d67 TM |
4585 | case -ERESTARTSYS: |
4586 | /* | |
4587 | * The show must go on: exit, but mark the | |
4588 | * stateid as needing recovery. | |
4589 | */ | |
4590 | case -NFS4ERR_ADMIN_REVOKED: | |
4591 | case -NFS4ERR_BAD_STATEID: | |
4592 | case -NFS4ERR_OPENMODE: | |
0400a6b0 | 4593 | nfs4_schedule_stateid_recovery(server, state); |
965b5d67 TM |
4594 | err = 0; |
4595 | goto out; | |
168667c4 TM |
4596 | case -EKEYEXPIRED: |
4597 | /* | |
4598 | * User RPCSEC_GSS context has expired. | |
4599 | * We cannot recover this stateid now, so | |
4600 | * skip it and allow recovery thread to | |
4601 | * proceed. | |
4602 | */ | |
4603 | err = 0; | |
4604 | goto out; | |
965b5d67 TM |
4605 | case -ENOMEM: |
4606 | case -NFS4ERR_DENIED: | |
4607 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
4608 | err = 0; | |
4609 | goto out; | |
d5122201 TM |
4610 | case -NFS4ERR_DELAY: |
4611 | break; | |
4612 | } | |
888e694c TM |
4613 | err = nfs4_handle_exception(server, err, &exception); |
4614 | } while (exception.retry); | |
4615 | out: | |
4616 | return err; | |
4617 | } | |
6b3b5496 | 4618 | |
d3c7b7cc TM |
4619 | static void nfs4_release_lockowner_release(void *calldata) |
4620 | { | |
4621 | kfree(calldata); | |
4622 | } | |
4623 | ||
4624 | const struct rpc_call_ops nfs4_release_lockowner_ops = { | |
4625 | .rpc_release = nfs4_release_lockowner_release, | |
4626 | }; | |
4627 | ||
4628 | void nfs4_release_lockowner(const struct nfs4_lock_state *lsp) | |
4629 | { | |
4630 | struct nfs_server *server = lsp->ls_state->owner->so_server; | |
4631 | struct nfs_release_lockowner_args *args; | |
4632 | struct rpc_message msg = { | |
4633 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
4634 | }; | |
4635 | ||
4636 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
4637 | return; | |
4638 | args = kmalloc(sizeof(*args), GFP_NOFS); | |
4639 | if (!args) | |
4640 | return; | |
4641 | args->lock_owner.clientid = server->nfs_client->cl_clientid; | |
4642 | args->lock_owner.id = lsp->ls_id.id; | |
d035c36c | 4643 | args->lock_owner.s_dev = server->s_dev; |
d3c7b7cc TM |
4644 | msg.rpc_argp = args; |
4645 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, args); | |
4646 | } | |
4647 | ||
aa1870af BF |
4648 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
4649 | ||
64c2ce8b AK |
4650 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
4651 | const void *buf, size_t buflen, | |
4652 | int flags, int type) | |
6b3b5496 | 4653 | { |
64c2ce8b AK |
4654 | if (strcmp(key, "") != 0) |
4655 | return -EINVAL; | |
4b580ee3 | 4656 | |
64c2ce8b | 4657 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4658 | } |
4659 | ||
64c2ce8b AK |
4660 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
4661 | void *buf, size_t buflen, int type) | |
6b3b5496 | 4662 | { |
64c2ce8b AK |
4663 | if (strcmp(key, "") != 0) |
4664 | return -EINVAL; | |
aa1870af | 4665 | |
64c2ce8b | 4666 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4667 | } |
4668 | ||
64c2ce8b AK |
4669 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
4670 | size_t list_len, const char *name, | |
4671 | size_t name_len, int type) | |
6b3b5496 | 4672 | { |
64c2ce8b | 4673 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 4674 | |
096455a2 BF |
4675 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
4676 | return 0; | |
64c2ce8b AK |
4677 | |
4678 | if (list && len <= list_len) | |
4679 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 4680 | return len; |
6b3b5496 BF |
4681 | } |
4682 | ||
533eb461 AA |
4683 | /* |
4684 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
4685 | */ | |
69aaaae1 TM |
4686 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
4687 | { | |
533eb461 AA |
4688 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
4689 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
4690 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
4691 | (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL))) | |
69aaaae1 TM |
4692 | return; |
4693 | ||
4694 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
4695 | NFS_ATTR_FATTR_NLINK; | |
4696 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; | |
4697 | fattr->nlink = 2; | |
4698 | } | |
4699 | ||
56659e99 | 4700 | int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, |
7aaa0b3b | 4701 | struct nfs4_fs_locations *fs_locations, struct page *page) |
683b57b4 TM |
4702 | { |
4703 | struct nfs_server *server = NFS_SERVER(dir); | |
4704 | u32 bitmask[2] = { | |
361e624f | 4705 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
4706 | }; |
4707 | struct nfs4_fs_locations_arg args = { | |
4708 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 4709 | .name = name, |
683b57b4 TM |
4710 | .page = page, |
4711 | .bitmask = bitmask, | |
4712 | }; | |
22958463 BH |
4713 | struct nfs4_fs_locations_res res = { |
4714 | .fs_locations = fs_locations, | |
4715 | }; | |
683b57b4 TM |
4716 | struct rpc_message msg = { |
4717 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
4718 | .rpc_argp = &args, | |
22958463 | 4719 | .rpc_resp = &res, |
683b57b4 TM |
4720 | }; |
4721 | int status; | |
4722 | ||
3110ff80 | 4723 | dprintk("%s: start\n", __func__); |
533eb461 AA |
4724 | |
4725 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
4726 | * is not supported */ | |
4727 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
4728 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
4729 | else | |
4730 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
4731 | ||
c228fd3a | 4732 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 4733 | fs_locations->server = server; |
830b8e33 | 4734 | fs_locations->nlocations = 0; |
7c513058 | 4735 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 4736 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
4737 | return status; |
4738 | } | |
4739 | ||
5a5ea0d4 BS |
4740 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) |
4741 | { | |
4742 | int status; | |
4743 | struct nfs4_secinfo_arg args = { | |
4744 | .dir_fh = NFS_FH(dir), | |
4745 | .name = name, | |
4746 | }; | |
4747 | struct nfs4_secinfo_res res = { | |
4748 | .flavors = flavors, | |
4749 | }; | |
4750 | struct rpc_message msg = { | |
4751 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
4752 | .rpc_argp = &args, | |
4753 | .rpc_resp = &res, | |
4754 | }; | |
4755 | ||
4756 | dprintk("NFS call secinfo %s\n", name->name); | |
4757 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); | |
4758 | dprintk("NFS reply secinfo: %d\n", status); | |
4759 | return status; | |
4760 | } | |
4761 | ||
4762 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) | |
4763 | { | |
4764 | struct nfs4_exception exception = { }; | |
4765 | int err; | |
4766 | do { | |
4767 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
4768 | _nfs4_proc_secinfo(dir, name, flavors), | |
4769 | &exception); | |
4770 | } while (exception.retry); | |
4771 | return err; | |
4772 | } | |
4773 | ||
557134a3 | 4774 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
4775 | /* |
4776 | * Check the exchange flags returned by the server for invalid flags, having | |
4777 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
4778 | * DS flags set. | |
4779 | */ | |
4780 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
4781 | { | |
4782 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
4783 | goto out_inval; | |
4784 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
4785 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
4786 | goto out_inval; | |
4787 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
4788 | goto out_inval; | |
4789 | return NFS_OK; | |
4790 | out_inval: | |
4791 | return -NFS4ERR_INVAL; | |
4792 | } | |
4793 | ||
78fe0f41 WAA |
4794 | static bool |
4795 | nfs41_same_server_scope(struct server_scope *a, struct server_scope *b) | |
4796 | { | |
4797 | if (a->server_scope_sz == b->server_scope_sz && | |
4798 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
4799 | return true; | |
4800 | ||
4801 | return false; | |
4802 | } | |
4803 | ||
99fe60d0 BH |
4804 | /* |
4805 | * nfs4_proc_exchange_id() | |
4806 | * | |
4807 | * Since the clientid has expired, all compounds using sessions | |
4808 | * associated with the stale clientid will be returning | |
4809 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
4810 | * be in some phase of session reset. | |
4811 | */ | |
4d643d1d | 4812 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
4813 | { |
4814 | nfs4_verifier verifier; | |
4815 | struct nfs41_exchange_id_args args = { | |
4816 | .client = clp, | |
357f54d6 | 4817 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, |
99fe60d0 BH |
4818 | }; |
4819 | struct nfs41_exchange_id_res res = { | |
4820 | .client = clp, | |
4821 | }; | |
4822 | int status; | |
4823 | struct rpc_message msg = { | |
4824 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
4825 | .rpc_argp = &args, | |
4826 | .rpc_resp = &res, | |
4827 | .rpc_cred = cred, | |
4828 | }; | |
4829 | __be32 *p; | |
4830 | ||
4831 | dprintk("--> %s\n", __func__); | |
4832 | BUG_ON(clp == NULL); | |
a7b72103 | 4833 | |
99fe60d0 BH |
4834 | p = (u32 *)verifier.data; |
4835 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); | |
4836 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
4837 | args.verifier = &verifier; | |
4838 | ||
c7a360b0 AA |
4839 | args.id_len = scnprintf(args.id, sizeof(args.id), |
4840 | "%s/%s.%s/%u", | |
4841 | clp->cl_ipaddr, | |
4842 | init_utsname()->nodename, | |
4843 | init_utsname()->domainname, | |
4844 | clp->cl_rpcclient->cl_auth->au_flavor); | |
99fe60d0 | 4845 | |
78fe0f41 WAA |
4846 | res.server_scope = kzalloc(sizeof(struct server_scope), GFP_KERNEL); |
4847 | if (unlikely(!res.server_scope)) | |
4848 | return -ENOMEM; | |
4849 | ||
1bd714f2 | 4850 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c7a360b0 AA |
4851 | if (!status) |
4852 | status = nfs4_check_cl_exchange_flags(clp->cl_exchange_flags); | |
78fe0f41 WAA |
4853 | |
4854 | if (!status) { | |
4855 | if (clp->server_scope && | |
4856 | !nfs41_same_server_scope(clp->server_scope, | |
4857 | res.server_scope)) { | |
4858 | dprintk("%s: server_scope mismatch detected\n", | |
4859 | __func__); | |
4860 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
4861 | kfree(clp->server_scope); | |
4862 | clp->server_scope = NULL; | |
4863 | } | |
4864 | ||
4865 | if (!clp->server_scope) | |
4866 | clp->server_scope = res.server_scope; | |
4867 | else | |
4868 | kfree(res.server_scope); | |
4869 | } | |
4870 | ||
99fe60d0 BH |
4871 | dprintk("<-- %s status= %d\n", __func__, status); |
4872 | return status; | |
4873 | } | |
4874 | ||
2050f0cc AA |
4875 | struct nfs4_get_lease_time_data { |
4876 | struct nfs4_get_lease_time_args *args; | |
4877 | struct nfs4_get_lease_time_res *res; | |
4878 | struct nfs_client *clp; | |
4879 | }; | |
4880 | ||
4881 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
4882 | void *calldata) | |
4883 | { | |
4884 | int ret; | |
4885 | struct nfs4_get_lease_time_data *data = | |
4886 | (struct nfs4_get_lease_time_data *)calldata; | |
4887 | ||
4888 | dprintk("--> %s\n", __func__); | |
689cf5c1 | 4889 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
2050f0cc AA |
4890 | /* just setup sequence, do not trigger session recovery |
4891 | since we're invoked within one */ | |
4892 | ret = nfs41_setup_sequence(data->clp->cl_session, | |
689cf5c1 AB |
4893 | &data->args->la_seq_args, |
4894 | &data->res->lr_seq_res, 0, task); | |
2050f0cc AA |
4895 | |
4896 | BUG_ON(ret == -EAGAIN); | |
4897 | rpc_call_start(task); | |
4898 | dprintk("<-- %s\n", __func__); | |
4899 | } | |
4900 | ||
4901 | /* | |
4902 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
4903 | * from sequence operation or clientid errors. | |
4904 | */ | |
4905 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
4906 | { | |
4907 | struct nfs4_get_lease_time_data *data = | |
4908 | (struct nfs4_get_lease_time_data *)calldata; | |
4909 | ||
4910 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
4911 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
4912 | return; | |
2050f0cc AA |
4913 | switch (task->tk_status) { |
4914 | case -NFS4ERR_DELAY: | |
4915 | case -NFS4ERR_GRACE: | |
4916 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
4917 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
4918 | task->tk_status = 0; | |
a8a4ae3a AA |
4919 | /* fall through */ |
4920 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
0110ee15 | 4921 | nfs_restart_rpc(task, data->clp); |
2050f0cc AA |
4922 | return; |
4923 | } | |
2050f0cc AA |
4924 | dprintk("<-- %s\n", __func__); |
4925 | } | |
4926 | ||
4927 | struct rpc_call_ops nfs4_get_lease_time_ops = { | |
4928 | .rpc_call_prepare = nfs4_get_lease_time_prepare, | |
4929 | .rpc_call_done = nfs4_get_lease_time_done, | |
4930 | }; | |
4931 | ||
4932 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
4933 | { | |
4934 | struct rpc_task *task; | |
4935 | struct nfs4_get_lease_time_args args; | |
4936 | struct nfs4_get_lease_time_res res = { | |
4937 | .lr_fsinfo = fsinfo, | |
4938 | }; | |
4939 | struct nfs4_get_lease_time_data data = { | |
4940 | .args = &args, | |
4941 | .res = &res, | |
4942 | .clp = clp, | |
4943 | }; | |
4944 | struct rpc_message msg = { | |
4945 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
4946 | .rpc_argp = &args, | |
4947 | .rpc_resp = &res, | |
4948 | }; | |
4949 | struct rpc_task_setup task_setup = { | |
4950 | .rpc_client = clp->cl_rpcclient, | |
4951 | .rpc_message = &msg, | |
4952 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
4953 | .callback_data = &data, |
4954 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
4955 | }; |
4956 | int status; | |
4957 | ||
2050f0cc AA |
4958 | dprintk("--> %s\n", __func__); |
4959 | task = rpc_run_task(&task_setup); | |
4960 | ||
4961 | if (IS_ERR(task)) | |
4962 | status = PTR_ERR(task); | |
4963 | else { | |
4964 | status = task->tk_status; | |
4965 | rpc_put_task(task); | |
4966 | } | |
4967 | dprintk("<-- %s return %d\n", __func__, status); | |
4968 | ||
4969 | return status; | |
4970 | } | |
4971 | ||
b73dafa7 RL |
4972 | /* |
4973 | * Reset a slot table | |
4974 | */ | |
104aeba4 AA |
4975 | static int nfs4_reset_slot_table(struct nfs4_slot_table *tbl, u32 max_reqs, |
4976 | int ivalue) | |
ac72b7b3 | 4977 | { |
104aeba4 | 4978 | struct nfs4_slot *new = NULL; |
b73dafa7 | 4979 | int i; |
ac72b7b3 AA |
4980 | int ret = 0; |
4981 | ||
104aeba4 AA |
4982 | dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__, |
4983 | max_reqs, tbl->max_slots); | |
ac72b7b3 | 4984 | |
104aeba4 AA |
4985 | /* Does the newly negotiated max_reqs match the existing slot table? */ |
4986 | if (max_reqs != tbl->max_slots) { | |
4987 | ret = -ENOMEM; | |
4988 | new = kmalloc(max_reqs * sizeof(struct nfs4_slot), | |
8535b2be | 4989 | GFP_NOFS); |
104aeba4 AA |
4990 | if (!new) |
4991 | goto out; | |
4992 | ret = 0; | |
4993 | kfree(tbl->slots); | |
ac72b7b3 AA |
4994 | } |
4995 | spin_lock(&tbl->slot_tbl_lock); | |
104aeba4 AA |
4996 | if (new) { |
4997 | tbl->slots = new; | |
4998 | tbl->max_slots = max_reqs; | |
4999 | } | |
5000 | for (i = 0; i < tbl->max_slots; ++i) | |
b73dafa7 | 5001 | tbl->slots[i].seq_nr = ivalue; |
ac72b7b3 AA |
5002 | spin_unlock(&tbl->slot_tbl_lock); |
5003 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, | |
5004 | tbl, tbl->slots, tbl->max_slots); | |
5005 | out: | |
5006 | dprintk("<-- %s: return %d\n", __func__, ret); | |
5007 | return ret; | |
5008 | } | |
5009 | ||
b73dafa7 RL |
5010 | /* |
5011 | * Reset the forechannel and backchannel slot tables | |
5012 | */ | |
5013 | static int nfs4_reset_slot_tables(struct nfs4_session *session) | |
5014 | { | |
5015 | int status; | |
5016 | ||
5017 | status = nfs4_reset_slot_table(&session->fc_slot_table, | |
104aeba4 | 5018 | session->fc_attrs.max_reqs, 1); |
f8625a6a RL |
5019 | if (status) |
5020 | return status; | |
5021 | ||
5022 | status = nfs4_reset_slot_table(&session->bc_slot_table, | |
104aeba4 | 5023 | session->bc_attrs.max_reqs, 0); |
b73dafa7 RL |
5024 | return status; |
5025 | } | |
5026 | ||
f8625a6a RL |
5027 | /* Destroy the slot table */ |
5028 | static void nfs4_destroy_slot_tables(struct nfs4_session *session) | |
5029 | { | |
5030 | if (session->fc_slot_table.slots != NULL) { | |
5031 | kfree(session->fc_slot_table.slots); | |
5032 | session->fc_slot_table.slots = NULL; | |
5033 | } | |
5034 | if (session->bc_slot_table.slots != NULL) { | |
5035 | kfree(session->bc_slot_table.slots); | |
5036 | session->bc_slot_table.slots = NULL; | |
5037 | } | |
5038 | return; | |
5039 | } | |
5040 | ||
fc931582 AA |
5041 | /* |
5042 | * Initialize slot table | |
5043 | */ | |
050047ce RL |
5044 | static int nfs4_init_slot_table(struct nfs4_slot_table *tbl, |
5045 | int max_slots, int ivalue) | |
fc931582 | 5046 | { |
fc931582 AA |
5047 | struct nfs4_slot *slot; |
5048 | int ret = -ENOMEM; | |
5049 | ||
5050 | BUG_ON(max_slots > NFS4_MAX_SLOT_TABLE); | |
5051 | ||
050047ce | 5052 | dprintk("--> %s: max_reqs=%u\n", __func__, max_slots); |
fc931582 | 5053 | |
8535b2be | 5054 | slot = kcalloc(max_slots, sizeof(struct nfs4_slot), GFP_NOFS); |
fc931582 AA |
5055 | if (!slot) |
5056 | goto out; | |
fc931582 AA |
5057 | ret = 0; |
5058 | ||
5059 | spin_lock(&tbl->slot_tbl_lock); | |
fc931582 AA |
5060 | tbl->max_slots = max_slots; |
5061 | tbl->slots = slot; | |
5062 | tbl->highest_used_slotid = -1; /* no slot is currently used */ | |
5063 | spin_unlock(&tbl->slot_tbl_lock); | |
5064 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, | |
5065 | tbl, tbl->slots, tbl->max_slots); | |
5066 | out: | |
5067 | dprintk("<-- %s: return %d\n", __func__, ret); | |
5068 | return ret; | |
fc931582 AA |
5069 | } |
5070 | ||
050047ce RL |
5071 | /* |
5072 | * Initialize the forechannel and backchannel tables | |
5073 | */ | |
5074 | static int nfs4_init_slot_tables(struct nfs4_session *session) | |
5075 | { | |
f26468fb TM |
5076 | struct nfs4_slot_table *tbl; |
5077 | int status = 0; | |
050047ce | 5078 | |
f26468fb TM |
5079 | tbl = &session->fc_slot_table; |
5080 | if (tbl->slots == NULL) { | |
5081 | status = nfs4_init_slot_table(tbl, | |
5082 | session->fc_attrs.max_reqs, 1); | |
5083 | if (status) | |
5084 | return status; | |
5085 | } | |
050047ce | 5086 | |
f26468fb TM |
5087 | tbl = &session->bc_slot_table; |
5088 | if (tbl->slots == NULL) { | |
5089 | status = nfs4_init_slot_table(tbl, | |
5090 | session->bc_attrs.max_reqs, 0); | |
5091 | if (status) | |
5092 | nfs4_destroy_slot_tables(session); | |
5093 | } | |
f8625a6a RL |
5094 | |
5095 | return status; | |
557134a3 AA |
5096 | } |
5097 | ||
5098 | struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) | |
5099 | { | |
5100 | struct nfs4_session *session; | |
5101 | struct nfs4_slot_table *tbl; | |
5102 | ||
8535b2be | 5103 | session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); |
557134a3 AA |
5104 | if (!session) |
5105 | return NULL; | |
76db6d95 | 5106 | |
557134a3 | 5107 | tbl = &session->fc_slot_table; |
9dfdf404 | 5108 | tbl->highest_used_slotid = -1; |
557134a3 | 5109 | spin_lock_init(&tbl->slot_tbl_lock); |
689cf5c1 | 5110 | rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table"); |
42acd021 | 5111 | init_completion(&tbl->complete); |
f8625a6a RL |
5112 | |
5113 | tbl = &session->bc_slot_table; | |
9dfdf404 | 5114 | tbl->highest_used_slotid = -1; |
f8625a6a RL |
5115 | spin_lock_init(&tbl->slot_tbl_lock); |
5116 | rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table"); | |
42acd021 | 5117 | init_completion(&tbl->complete); |
f8625a6a | 5118 | |
1055d76d TM |
5119 | session->session_state = 1<<NFS4_SESSION_INITING; |
5120 | ||
557134a3 AA |
5121 | session->clp = clp; |
5122 | return session; | |
5123 | } | |
5124 | ||
5125 | void nfs4_destroy_session(struct nfs4_session *session) | |
5126 | { | |
5a0ffe54 AA |
5127 | nfs4_proc_destroy_session(session); |
5128 | dprintk("%s Destroy backchannel for xprt %p\n", | |
5129 | __func__, session->clp->cl_rpcclient->cl_xprt); | |
5130 | xprt_destroy_backchannel(session->clp->cl_rpcclient->cl_xprt, | |
5131 | NFS41_BC_MIN_CALLBACKS); | |
f8625a6a | 5132 | nfs4_destroy_slot_tables(session); |
557134a3 AA |
5133 | kfree(session); |
5134 | } | |
5135 | ||
fc931582 AA |
5136 | /* |
5137 | * Initialize the values to be used by the client in CREATE_SESSION | |
5138 | * If nfs4_init_session set the fore channel request and response sizes, | |
5139 | * use them. | |
5140 | * | |
5141 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
5142 | * always set csa_cachethis to FALSE because the current implementation | |
5143 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
5144 | */ | |
5145 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
5146 | { | |
5147 | struct nfs4_session *session = args->client->cl_session; | |
5148 | unsigned int mxrqst_sz = session->fc_attrs.max_rqst_sz, | |
5149 | mxresp_sz = session->fc_attrs.max_resp_sz; | |
5150 | ||
5151 | if (mxrqst_sz == 0) | |
5152 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
5153 | if (mxresp_sz == 0) | |
5154 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
5155 | /* Fore channel attributes */ | |
fc931582 AA |
5156 | args->fc_attrs.max_rqst_sz = mxrqst_sz; |
5157 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 AA |
5158 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
5159 | args->fc_attrs.max_reqs = session->clp->cl_rpcclient->cl_xprt->max_reqs; | |
5160 | ||
5161 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 5162 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
5163 | __func__, |
5164 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 5165 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
5166 | |
5167 | /* Back channel attributes */ | |
fc931582 AA |
5168 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
5169 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
5170 | args->bc_attrs.max_resp_sz_cached = 0; | |
5171 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
5172 | args->bc_attrs.max_reqs = 1; | |
5173 | ||
5174 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
5175 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
5176 | __func__, | |
5177 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
5178 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
5179 | args->bc_attrs.max_reqs); | |
5180 | } | |
5181 | ||
43c2e885 | 5182 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 5183 | { |
43c2e885 BF |
5184 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
5185 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
5186 | ||
43c2e885 BF |
5187 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
5188 | return -EINVAL; | |
5189 | /* | |
5190 | * Our requested max_ops is the minimum we need; we're not | |
5191 | * prepared to break up compounds into smaller pieces than that. | |
5192 | * So, no point even trying to continue if the server won't | |
5193 | * cooperate: | |
5194 | */ | |
5195 | if (rcvd->max_ops < sent->max_ops) | |
5196 | return -EINVAL; | |
5197 | if (rcvd->max_reqs == 0) | |
5198 | return -EINVAL; | |
5199 | return 0; | |
8d35301d AA |
5200 | } |
5201 | ||
43c2e885 BF |
5202 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
5203 | { | |
5204 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
5205 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 5206 | |
43c2e885 BF |
5207 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
5208 | return -EINVAL; | |
5209 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
5210 | return -EINVAL; | |
5211 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
5212 | return -EINVAL; | |
5213 | /* These would render the backchannel useless: */ | |
5214 | if (rcvd->max_ops == 0) | |
5215 | return -EINVAL; | |
5216 | if (rcvd->max_reqs == 0) | |
5217 | return -EINVAL; | |
5218 | return 0; | |
5219 | } | |
8d35301d | 5220 | |
8d35301d AA |
5221 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
5222 | struct nfs4_session *session) | |
5223 | { | |
43c2e885 | 5224 | int ret; |
8d35301d | 5225 | |
43c2e885 BF |
5226 | ret = nfs4_verify_fore_channel_attrs(args, session); |
5227 | if (ret) | |
5228 | return ret; | |
5229 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
5230 | } |
5231 | ||
fc931582 AA |
5232 | static int _nfs4_proc_create_session(struct nfs_client *clp) |
5233 | { | |
5234 | struct nfs4_session *session = clp->cl_session; | |
5235 | struct nfs41_create_session_args args = { | |
5236 | .client = clp, | |
5237 | .cb_program = NFS4_CALLBACK, | |
5238 | }; | |
5239 | struct nfs41_create_session_res res = { | |
5240 | .client = clp, | |
5241 | }; | |
5242 | struct rpc_message msg = { | |
5243 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
5244 | .rpc_argp = &args, | |
5245 | .rpc_resp = &res, | |
5246 | }; | |
5247 | int status; | |
5248 | ||
5249 | nfs4_init_channel_attrs(&args); | |
0f91421e | 5250 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 5251 | |
1bd714f2 | 5252 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
fc931582 | 5253 | |
8d35301d AA |
5254 | if (!status) |
5255 | /* Verify the session's negotiated channel_attrs values */ | |
5256 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
5257 | if (!status) { |
5258 | /* Increment the clientid slot sequence id */ | |
5259 | clp->cl_seqid++; | |
5260 | } | |
5261 | ||
5262 | return status; | |
5263 | } | |
5264 | ||
5265 | /* | |
5266 | * Issues a CREATE_SESSION operation to the server. | |
5267 | * It is the responsibility of the caller to verify the session is | |
5268 | * expired before calling this routine. | |
5269 | */ | |
f26468fb | 5270 | int nfs4_proc_create_session(struct nfs_client *clp) |
fc931582 AA |
5271 | { |
5272 | int status; | |
5273 | unsigned *ptr; | |
fc931582 AA |
5274 | struct nfs4_session *session = clp->cl_session; |
5275 | ||
5276 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
5277 | ||
fd954ae1 | 5278 | status = _nfs4_proc_create_session(clp); |
fc931582 AA |
5279 | if (status) |
5280 | goto out; | |
5281 | ||
f26468fb TM |
5282 | /* Init and reset the fore channel */ |
5283 | status = nfs4_init_slot_tables(session); | |
5284 | dprintk("slot table initialization returned %d\n", status); | |
5285 | if (status) | |
5286 | goto out; | |
5287 | status = nfs4_reset_slot_tables(session); | |
5288 | dprintk("slot table reset returned %d\n", status); | |
fc931582 AA |
5289 | if (status) |
5290 | goto out; | |
5291 | ||
5292 | ptr = (unsigned *)&session->sess_id.data[0]; | |
5293 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
5294 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
5295 | out: |
5296 | dprintk("<-- %s\n", __func__); | |
5297 | return status; | |
5298 | } | |
5299 | ||
0f3e66c6 AA |
5300 | /* |
5301 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
5302 | * The caller must serialize access to this routine. | |
5303 | */ | |
5304 | int nfs4_proc_destroy_session(struct nfs4_session *session) | |
5305 | { | |
5306 | int status = 0; | |
5307 | struct rpc_message msg; | |
5308 | ||
5309 | dprintk("--> nfs4_proc_destroy_session\n"); | |
5310 | ||
5311 | /* session is still being setup */ | |
5312 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
5313 | return status; | |
5314 | ||
5315 | msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION]; | |
5316 | msg.rpc_argp = session; | |
5317 | msg.rpc_resp = NULL; | |
5318 | msg.rpc_cred = NULL; | |
1bd714f2 | 5319 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
0f3e66c6 AA |
5320 | |
5321 | if (status) | |
5322 | printk(KERN_WARNING | |
5323 | "Got error %d from the server on DESTROY_SESSION. " | |
5324 | "Session has been destroyed regardless...\n", status); | |
5325 | ||
5326 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
5327 | return status; | |
5328 | } | |
5329 | ||
fccba804 TM |
5330 | int nfs4_init_session(struct nfs_server *server) |
5331 | { | |
5332 | struct nfs_client *clp = server->nfs_client; | |
2449ea2e | 5333 | struct nfs4_session *session; |
68bf05ef | 5334 | unsigned int rsize, wsize; |
fccba804 TM |
5335 | int ret; |
5336 | ||
5337 | if (!nfs4_has_session(clp)) | |
5338 | return 0; | |
5339 | ||
1055d76d TM |
5340 | session = clp->cl_session; |
5341 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5342 | return 0; | |
5343 | ||
68bf05ef AA |
5344 | rsize = server->rsize; |
5345 | if (rsize == 0) | |
5346 | rsize = NFS_MAX_FILE_IO_SIZE; | |
5347 | wsize = server->wsize; | |
5348 | if (wsize == 0) | |
5349 | wsize = NFS_MAX_FILE_IO_SIZE; | |
5350 | ||
68bf05ef AA |
5351 | session->fc_attrs.max_rqst_sz = wsize + nfs41_maxwrite_overhead; |
5352 | session->fc_attrs.max_resp_sz = rsize + nfs41_maxread_overhead; | |
2449ea2e | 5353 | |
fccba804 TM |
5354 | ret = nfs4_recover_expired_lease(server); |
5355 | if (!ret) | |
5356 | ret = nfs4_check_client_ready(clp); | |
5357 | return ret; | |
5358 | } | |
5359 | ||
d83217c1 AA |
5360 | int nfs4_init_ds_session(struct nfs_client *clp) |
5361 | { | |
5362 | struct nfs4_session *session = clp->cl_session; | |
5363 | int ret; | |
5364 | ||
5365 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5366 | return 0; | |
5367 | ||
5368 | ret = nfs4_client_recover_expired_lease(clp); | |
5369 | if (!ret) | |
5370 | /* Test for the DS role */ | |
5371 | if (!is_ds_client(clp)) | |
5372 | ret = -ENODEV; | |
5373 | if (!ret) | |
5374 | ret = nfs4_check_client_ready(clp); | |
5375 | return ret; | |
5376 | ||
5377 | } | |
5378 | EXPORT_SYMBOL_GPL(nfs4_init_ds_session); | |
5379 | ||
5380 | ||
fc01cea9 AA |
5381 | /* |
5382 | * Renew the cl_session lease. | |
5383 | */ | |
d5f8d3fe TM |
5384 | struct nfs4_sequence_data { |
5385 | struct nfs_client *clp; | |
5386 | struct nfs4_sequence_args args; | |
5387 | struct nfs4_sequence_res res; | |
5388 | }; | |
5389 | ||
dc96aef9 AB |
5390 | static void nfs41_sequence_release(void *data) |
5391 | { | |
d5f8d3fe TM |
5392 | struct nfs4_sequence_data *calldata = data; |
5393 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 5394 | |
7135840f AB |
5395 | if (atomic_read(&clp->cl_count) > 1) |
5396 | nfs4_schedule_state_renewal(clp); | |
5397 | nfs_put_client(clp); | |
d5f8d3fe | 5398 | kfree(calldata); |
dc96aef9 AB |
5399 | } |
5400 | ||
aa5190d0 TM |
5401 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5402 | { | |
5403 | switch(task->tk_status) { | |
5404 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5405 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5406 | return -EAGAIN; | |
5407 | default: | |
0400a6b0 | 5408 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5409 | } |
5410 | return 0; | |
5411 | } | |
5412 | ||
dc96aef9 | 5413 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 5414 | { |
d5f8d3fe TM |
5415 | struct nfs4_sequence_data *calldata = data; |
5416 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 5417 | |
14516c3a TM |
5418 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
5419 | return; | |
fc01cea9 AA |
5420 | |
5421 | if (task->tk_status < 0) { | |
5422 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
5423 | if (atomic_read(&clp->cl_count) == 1) |
5424 | goto out; | |
fc01cea9 | 5425 | |
aa5190d0 TM |
5426 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
5427 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
5428 | return; |
5429 | } | |
5430 | } | |
fc01cea9 | 5431 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 5432 | out: |
fc01cea9 AA |
5433 | dprintk("<-- %s\n", __func__); |
5434 | } | |
5435 | ||
5436 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
5437 | { | |
d5f8d3fe TM |
5438 | struct nfs4_sequence_data *calldata = data; |
5439 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
5440 | struct nfs4_sequence_args *args; |
5441 | struct nfs4_sequence_res *res; | |
5442 | ||
fc01cea9 AA |
5443 | args = task->tk_msg.rpc_argp; |
5444 | res = task->tk_msg.rpc_resp; | |
5445 | ||
035168ab | 5446 | if (nfs41_setup_sequence(clp->cl_session, args, res, 0, task)) |
fc01cea9 AA |
5447 | return; |
5448 | rpc_call_start(task); | |
5449 | } | |
5450 | ||
5451 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
5452 | .rpc_call_done = nfs41_sequence_call_done, | |
5453 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 5454 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
5455 | }; |
5456 | ||
71ac6da9 | 5457 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) |
fc01cea9 | 5458 | { |
d5f8d3fe | 5459 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
5460 | struct rpc_message msg = { |
5461 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
5462 | .rpc_cred = cred, | |
5463 | }; | |
71ac6da9 TM |
5464 | struct rpc_task_setup task_setup_data = { |
5465 | .rpc_client = clp->cl_rpcclient, | |
5466 | .rpc_message = &msg, | |
5467 | .callback_ops = &nfs41_sequence_ops, | |
5468 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT, | |
5469 | }; | |
fc01cea9 | 5470 | |
7135840f | 5471 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 5472 | return ERR_PTR(-EIO); |
dfb4f309 | 5473 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 5474 | if (calldata == NULL) { |
7135840f | 5475 | nfs_put_client(clp); |
71ac6da9 | 5476 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 5477 | } |
d5f8d3fe TM |
5478 | msg.rpc_argp = &calldata->args; |
5479 | msg.rpc_resp = &calldata->res; | |
5480 | calldata->clp = clp; | |
71ac6da9 | 5481 | task_setup_data.callback_data = calldata; |
fc01cea9 | 5482 | |
71ac6da9 TM |
5483 | return rpc_run_task(&task_setup_data); |
5484 | } | |
5485 | ||
2f60ea6b | 5486 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
5487 | { |
5488 | struct rpc_task *task; | |
5489 | int ret = 0; | |
5490 | ||
2f60ea6b TM |
5491 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
5492 | return 0; | |
71ac6da9 TM |
5493 | task = _nfs41_proc_sequence(clp, cred); |
5494 | if (IS_ERR(task)) | |
5495 | ret = PTR_ERR(task); | |
5496 | else | |
bf294b41 | 5497 | rpc_put_task_async(task); |
71ac6da9 TM |
5498 | dprintk("<-- %s status=%d\n", __func__, ret); |
5499 | return ret; | |
5500 | } | |
5501 | ||
5502 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5503 | { | |
5504 | struct rpc_task *task; | |
5505 | int ret; | |
5506 | ||
5507 | task = _nfs41_proc_sequence(clp, cred); | |
5508 | if (IS_ERR(task)) { | |
5509 | ret = PTR_ERR(task); | |
5510 | goto out; | |
5511 | } | |
5512 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
5513 | if (!ret) { |
5514 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
5515 | ||
5516 | if (task->tk_status == 0) | |
5517 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 5518 | ret = task->tk_status; |
b4410c2f | 5519 | } |
71ac6da9 TM |
5520 | rpc_put_task(task); |
5521 | out: | |
5522 | dprintk("<-- %s status=%d\n", __func__, ret); | |
5523 | return ret; | |
fc01cea9 AA |
5524 | } |
5525 | ||
fce5c838 RL |
5526 | struct nfs4_reclaim_complete_data { |
5527 | struct nfs_client *clp; | |
5528 | struct nfs41_reclaim_complete_args arg; | |
5529 | struct nfs41_reclaim_complete_res res; | |
5530 | }; | |
5531 | ||
5532 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
5533 | { | |
5534 | struct nfs4_reclaim_complete_data *calldata = data; | |
5535 | ||
b257957e | 5536 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
035168ab TM |
5537 | if (nfs41_setup_sequence(calldata->clp->cl_session, |
5538 | &calldata->arg.seq_args, | |
fce5c838 RL |
5539 | &calldata->res.seq_res, 0, task)) |
5540 | return; | |
5541 | ||
5542 | rpc_call_start(task); | |
5543 | } | |
5544 | ||
aa5190d0 TM |
5545 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5546 | { | |
5547 | switch(task->tk_status) { | |
5548 | case 0: | |
5549 | case -NFS4ERR_COMPLETE_ALREADY: | |
5550 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
5551 | break; | |
5552 | case -NFS4ERR_DELAY: | |
aa5190d0 | 5553 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
5554 | /* fall through */ |
5555 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
5556 | return -EAGAIN; |
5557 | default: | |
0400a6b0 | 5558 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5559 | } |
5560 | return 0; | |
5561 | } | |
5562 | ||
fce5c838 RL |
5563 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
5564 | { | |
5565 | struct nfs4_reclaim_complete_data *calldata = data; | |
5566 | struct nfs_client *clp = calldata->clp; | |
5567 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
5568 | ||
5569 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5570 | if (!nfs41_sequence_done(task, res)) |
5571 | return; | |
fce5c838 | 5572 | |
aa5190d0 TM |
5573 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
5574 | rpc_restart_call_prepare(task); | |
5575 | return; | |
5576 | } | |
fce5c838 RL |
5577 | dprintk("<-- %s\n", __func__); |
5578 | } | |
5579 | ||
5580 | static void nfs4_free_reclaim_complete_data(void *data) | |
5581 | { | |
5582 | struct nfs4_reclaim_complete_data *calldata = data; | |
5583 | ||
5584 | kfree(calldata); | |
5585 | } | |
5586 | ||
5587 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
5588 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
5589 | .rpc_call_done = nfs4_reclaim_complete_done, | |
5590 | .rpc_release = nfs4_free_reclaim_complete_data, | |
5591 | }; | |
5592 | ||
5593 | /* | |
5594 | * Issue a global reclaim complete. | |
5595 | */ | |
5596 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
5597 | { | |
5598 | struct nfs4_reclaim_complete_data *calldata; | |
5599 | struct rpc_task *task; | |
5600 | struct rpc_message msg = { | |
5601 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
5602 | }; | |
5603 | struct rpc_task_setup task_setup_data = { | |
5604 | .rpc_client = clp->cl_rpcclient, | |
5605 | .rpc_message = &msg, | |
5606 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
5607 | .flags = RPC_TASK_ASYNC, | |
5608 | }; | |
5609 | int status = -ENOMEM; | |
5610 | ||
5611 | dprintk("--> %s\n", __func__); | |
8535b2be | 5612 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
5613 | if (calldata == NULL) |
5614 | goto out; | |
5615 | calldata->clp = clp; | |
5616 | calldata->arg.one_fs = 0; | |
fce5c838 RL |
5617 | |
5618 | msg.rpc_argp = &calldata->arg; | |
5619 | msg.rpc_resp = &calldata->res; | |
5620 | task_setup_data.callback_data = calldata; | |
5621 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 5622 | if (IS_ERR(task)) { |
fce5c838 | 5623 | status = PTR_ERR(task); |
acf82b85 DC |
5624 | goto out; |
5625 | } | |
c34c32ea AA |
5626 | status = nfs4_wait_for_completion_rpc_task(task); |
5627 | if (status == 0) | |
5628 | status = task->tk_status; | |
fce5c838 | 5629 | rpc_put_task(task); |
acf82b85 | 5630 | return 0; |
fce5c838 RL |
5631 | out: |
5632 | dprintk("<-- %s status=%d\n", __func__, status); | |
5633 | return status; | |
5634 | } | |
b1f69b75 AA |
5635 | |
5636 | static void | |
5637 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
5638 | { | |
5639 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 5640 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
b1f69b75 AA |
5641 | |
5642 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
5643 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
5644 | * right now covering the LAYOUTGET we are about to send. | |
5645 | * However, that is not so catastrophic, and there seems | |
5646 | * to be no way to prevent it completely. | |
5647 | */ | |
b1f69b75 AA |
5648 | if (nfs4_setup_sequence(server, &lgp->args.seq_args, |
5649 | &lgp->res.seq_res, 0, task)) | |
5650 | return; | |
cf7d63f1 FI |
5651 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
5652 | NFS_I(lgp->args.inode)->layout, | |
5653 | lgp->args.ctx->state)) { | |
5654 | rpc_exit(task, NFS4_OK); | |
5655 | return; | |
5656 | } | |
b1f69b75 AA |
5657 | rpc_call_start(task); |
5658 | } | |
5659 | ||
5660 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
5661 | { | |
5662 | struct nfs4_layoutget *lgp = calldata; | |
5663 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5664 | ||
5665 | dprintk("--> %s\n", __func__); | |
5666 | ||
5667 | if (!nfs4_sequence_done(task, &lgp->res.seq_res)) | |
5668 | return; | |
5669 | ||
5670 | switch (task->tk_status) { | |
5671 | case 0: | |
5672 | break; | |
5673 | case -NFS4ERR_LAYOUTTRYLATER: | |
5674 | case -NFS4ERR_RECALLCONFLICT: | |
5675 | task->tk_status = -NFS4ERR_DELAY; | |
5676 | /* Fall through */ | |
5677 | default: | |
5678 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
5679 | rpc_restart_call_prepare(task); | |
5680 | return; | |
5681 | } | |
5682 | } | |
b1f69b75 AA |
5683 | dprintk("<-- %s\n", __func__); |
5684 | } | |
5685 | ||
5686 | static void nfs4_layoutget_release(void *calldata) | |
5687 | { | |
5688 | struct nfs4_layoutget *lgp = calldata; | |
5689 | ||
5690 | dprintk("--> %s\n", __func__); | |
b1f69b75 AA |
5691 | put_nfs_open_context(lgp->args.ctx); |
5692 | kfree(calldata); | |
5693 | dprintk("<-- %s\n", __func__); | |
5694 | } | |
5695 | ||
5696 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
5697 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
5698 | .rpc_call_done = nfs4_layoutget_done, | |
5699 | .rpc_release = nfs4_layoutget_release, | |
5700 | }; | |
5701 | ||
5702 | int nfs4_proc_layoutget(struct nfs4_layoutget *lgp) | |
5703 | { | |
5704 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5705 | struct rpc_task *task; | |
5706 | struct rpc_message msg = { | |
5707 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
5708 | .rpc_argp = &lgp->args, | |
5709 | .rpc_resp = &lgp->res, | |
5710 | }; | |
5711 | struct rpc_task_setup task_setup_data = { | |
5712 | .rpc_client = server->client, | |
5713 | .rpc_message = &msg, | |
5714 | .callback_ops = &nfs4_layoutget_call_ops, | |
5715 | .callback_data = lgp, | |
5716 | .flags = RPC_TASK_ASYNC, | |
5717 | }; | |
5718 | int status = 0; | |
5719 | ||
5720 | dprintk("--> %s\n", __func__); | |
5721 | ||
35124a09 | 5722 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 AA |
5723 | lgp->res.seq_res.sr_slot = NULL; |
5724 | task = rpc_run_task(&task_setup_data); | |
5725 | if (IS_ERR(task)) | |
5726 | return PTR_ERR(task); | |
5727 | status = nfs4_wait_for_completion_rpc_task(task); | |
c31663d4 FI |
5728 | if (status == 0) |
5729 | status = task->tk_status; | |
5730 | if (status == 0) | |
5731 | status = pnfs_layout_process(lgp); | |
b1f69b75 AA |
5732 | rpc_put_task(task); |
5733 | dprintk("<-- %s status=%d\n", __func__, status); | |
5734 | return status; | |
5735 | } | |
5736 | ||
cbe82603 BH |
5737 | static void |
5738 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
5739 | { | |
5740 | struct nfs4_layoutreturn *lrp = calldata; | |
5741 | ||
5742 | dprintk("--> %s\n", __func__); | |
5743 | if (nfs41_setup_sequence(lrp->clp->cl_session, &lrp->args.seq_args, | |
5744 | &lrp->res.seq_res, 0, task)) | |
5745 | return; | |
5746 | rpc_call_start(task); | |
5747 | } | |
5748 | ||
5749 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
5750 | { | |
5751 | struct nfs4_layoutreturn *lrp = calldata; | |
5752 | struct nfs_server *server; | |
a56aaa02 | 5753 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
5754 | |
5755 | dprintk("--> %s\n", __func__); | |
5756 | ||
5757 | if (!nfs4_sequence_done(task, &lrp->res.seq_res)) | |
5758 | return; | |
5759 | ||
5760 | server = NFS_SERVER(lrp->args.inode); | |
5761 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
5762 | nfs_restart_rpc(task, lrp->clp); | |
5763 | return; | |
5764 | } | |
a2e1d4f2 | 5765 | spin_lock(&lo->plh_inode->i_lock); |
cbe82603 | 5766 | if (task->tk_status == 0) { |
cbe82603 | 5767 | if (lrp->res.lrs_present) { |
cbe82603 | 5768 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); |
cbe82603 BH |
5769 | } else |
5770 | BUG_ON(!list_empty(&lo->plh_segs)); | |
5771 | } | |
a2e1d4f2 FI |
5772 | lo->plh_block_lgets--; |
5773 | spin_unlock(&lo->plh_inode->i_lock); | |
cbe82603 BH |
5774 | dprintk("<-- %s\n", __func__); |
5775 | } | |
5776 | ||
5777 | static void nfs4_layoutreturn_release(void *calldata) | |
5778 | { | |
5779 | struct nfs4_layoutreturn *lrp = calldata; | |
5780 | ||
5781 | dprintk("--> %s\n", __func__); | |
a56aaa02 | 5782 | put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
5783 | kfree(calldata); |
5784 | dprintk("<-- %s\n", __func__); | |
5785 | } | |
5786 | ||
5787 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
5788 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
5789 | .rpc_call_done = nfs4_layoutreturn_done, | |
5790 | .rpc_release = nfs4_layoutreturn_release, | |
5791 | }; | |
5792 | ||
5793 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
5794 | { | |
5795 | struct rpc_task *task; | |
5796 | struct rpc_message msg = { | |
5797 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
5798 | .rpc_argp = &lrp->args, | |
5799 | .rpc_resp = &lrp->res, | |
5800 | }; | |
5801 | struct rpc_task_setup task_setup_data = { | |
5802 | .rpc_client = lrp->clp->cl_rpcclient, | |
5803 | .rpc_message = &msg, | |
5804 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
5805 | .callback_data = lrp, | |
5806 | }; | |
5807 | int status; | |
5808 | ||
5809 | dprintk("--> %s\n", __func__); | |
5810 | task = rpc_run_task(&task_setup_data); | |
5811 | if (IS_ERR(task)) | |
5812 | return PTR_ERR(task); | |
5813 | status = task->tk_status; | |
5814 | dprintk("<-- %s status=%d\n", __func__, status); | |
5815 | rpc_put_task(task); | |
5816 | return status; | |
5817 | } | |
5818 | ||
7f11d8d3 AA |
5819 | /* |
5820 | * Retrieve the list of Data Server devices from the MDS. | |
5821 | */ | |
5822 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
5823 | const struct nfs_fh *fh, | |
5824 | struct pnfs_devicelist *devlist) | |
5825 | { | |
5826 | struct nfs4_getdevicelist_args args = { | |
5827 | .fh = fh, | |
5828 | .layoutclass = server->pnfs_curr_ld->id, | |
5829 | }; | |
5830 | struct nfs4_getdevicelist_res res = { | |
5831 | .devlist = devlist, | |
5832 | }; | |
5833 | struct rpc_message msg = { | |
5834 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
5835 | .rpc_argp = &args, | |
5836 | .rpc_resp = &res, | |
5837 | }; | |
5838 | int status; | |
5839 | ||
5840 | dprintk("--> %s\n", __func__); | |
5841 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
5842 | &res.seq_res, 0); | |
5843 | dprintk("<-- %s status=%d\n", __func__, status); | |
5844 | return status; | |
5845 | } | |
5846 | ||
5847 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
5848 | const struct nfs_fh *fh, | |
5849 | struct pnfs_devicelist *devlist) | |
5850 | { | |
5851 | struct nfs4_exception exception = { }; | |
5852 | int err; | |
5853 | ||
5854 | do { | |
5855 | err = nfs4_handle_exception(server, | |
5856 | _nfs4_getdevicelist(server, fh, devlist), | |
5857 | &exception); | |
5858 | } while (exception.retry); | |
5859 | ||
5860 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
5861 | err, devlist->num_devs); | |
5862 | ||
5863 | return err; | |
5864 | } | |
5865 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
5866 | ||
b1f69b75 AA |
5867 | static int |
5868 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
5869 | { | |
5870 | struct nfs4_getdeviceinfo_args args = { | |
5871 | .pdev = pdev, | |
5872 | }; | |
5873 | struct nfs4_getdeviceinfo_res res = { | |
5874 | .pdev = pdev, | |
5875 | }; | |
5876 | struct rpc_message msg = { | |
5877 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
5878 | .rpc_argp = &args, | |
5879 | .rpc_resp = &res, | |
5880 | }; | |
5881 | int status; | |
5882 | ||
5883 | dprintk("--> %s\n", __func__); | |
7c513058 | 5884 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
5885 | dprintk("<-- %s status=%d\n", __func__, status); |
5886 | ||
5887 | return status; | |
5888 | } | |
5889 | ||
5890 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
5891 | { | |
5892 | struct nfs4_exception exception = { }; | |
5893 | int err; | |
5894 | ||
5895 | do { | |
5896 | err = nfs4_handle_exception(server, | |
5897 | _nfs4_proc_getdeviceinfo(server, pdev), | |
5898 | &exception); | |
5899 | } while (exception.retry); | |
5900 | return err; | |
5901 | } | |
5902 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
5903 | ||
863a3c6c AA |
5904 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
5905 | { | |
5906 | struct nfs4_layoutcommit_data *data = calldata; | |
5907 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
5908 | ||
5909 | if (nfs4_setup_sequence(server, &data->args.seq_args, | |
5910 | &data->res.seq_res, 1, task)) | |
5911 | return; | |
5912 | rpc_call_start(task); | |
5913 | } | |
5914 | ||
5915 | static void | |
5916 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
5917 | { | |
5918 | struct nfs4_layoutcommit_data *data = calldata; | |
5919 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
5920 | ||
5921 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
5922 | return; | |
5923 | ||
5924 | switch (task->tk_status) { /* Just ignore these failures */ | |
5925 | case NFS4ERR_DELEG_REVOKED: /* layout was recalled */ | |
5926 | case NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
5927 | case NFS4ERR_BADLAYOUT: /* no layout */ | |
5928 | case NFS4ERR_GRACE: /* loca_recalim always false */ | |
5929 | task->tk_status = 0; | |
5930 | } | |
5931 | ||
5932 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
5933 | nfs_restart_rpc(task, server->nfs_client); | |
5934 | return; | |
5935 | } | |
5936 | ||
5937 | if (task->tk_status == 0) | |
5938 | nfs_post_op_update_inode_force_wcc(data->args.inode, | |
5939 | data->res.fattr); | |
5940 | } | |
5941 | ||
5942 | static void nfs4_layoutcommit_release(void *calldata) | |
5943 | { | |
5944 | struct nfs4_layoutcommit_data *data = calldata; | |
a9bae566 | 5945 | struct pnfs_layout_segment *lseg, *tmp; |
863a3c6c | 5946 | |
db29c089 | 5947 | pnfs_cleanup_layoutcommit(data); |
863a3c6c | 5948 | /* Matched by references in pnfs_set_layoutcommit */ |
a9bae566 PT |
5949 | list_for_each_entry_safe(lseg, tmp, &data->lseg_list, pls_lc_list) { |
5950 | list_del_init(&lseg->pls_lc_list); | |
5951 | if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT, | |
5952 | &lseg->pls_flags)) | |
5953 | put_lseg(lseg); | |
5954 | } | |
863a3c6c AA |
5955 | put_rpccred(data->cred); |
5956 | kfree(data); | |
5957 | } | |
5958 | ||
5959 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
5960 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
5961 | .rpc_call_done = nfs4_layoutcommit_done, | |
5962 | .rpc_release = nfs4_layoutcommit_release, | |
5963 | }; | |
5964 | ||
5965 | int | |
ef311537 | 5966 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
5967 | { |
5968 | struct rpc_message msg = { | |
5969 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
5970 | .rpc_argp = &data->args, | |
5971 | .rpc_resp = &data->res, | |
5972 | .rpc_cred = data->cred, | |
5973 | }; | |
5974 | struct rpc_task_setup task_setup_data = { | |
5975 | .task = &data->task, | |
5976 | .rpc_client = NFS_CLIENT(data->args.inode), | |
5977 | .rpc_message = &msg, | |
5978 | .callback_ops = &nfs4_layoutcommit_ops, | |
5979 | .callback_data = data, | |
5980 | .flags = RPC_TASK_ASYNC, | |
5981 | }; | |
5982 | struct rpc_task *task; | |
5983 | int status = 0; | |
5984 | ||
5985 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
5986 | "lbw: %llu inode %lu\n", | |
5987 | data->task.tk_pid, sync, | |
5988 | data->args.lastbytewritten, | |
5989 | data->args.inode->i_ino); | |
5990 | ||
5991 | task = rpc_run_task(&task_setup_data); | |
5992 | if (IS_ERR(task)) | |
5993 | return PTR_ERR(task); | |
ef311537 | 5994 | if (sync == false) |
863a3c6c AA |
5995 | goto out; |
5996 | status = nfs4_wait_for_completion_rpc_task(task); | |
5997 | if (status != 0) | |
5998 | goto out; | |
5999 | status = task->tk_status; | |
6000 | out: | |
6001 | dprintk("%s: status %d\n", __func__, status); | |
6002 | rpc_put_task(task); | |
6003 | return status; | |
6004 | } | |
fca78d6d BS |
6005 | |
6006 | static int | |
6007 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6008 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6009 | { | |
6010 | struct nfs41_secinfo_no_name_args args = { | |
6011 | .style = SECINFO_STYLE_CURRENT_FH, | |
6012 | }; | |
6013 | struct nfs4_secinfo_res res = { | |
6014 | .flavors = flavors, | |
6015 | }; | |
6016 | struct rpc_message msg = { | |
6017 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
6018 | .rpc_argp = &args, | |
6019 | .rpc_resp = &res, | |
6020 | }; | |
6021 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); | |
6022 | } | |
6023 | ||
6024 | static int | |
6025 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6026 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6027 | { | |
6028 | struct nfs4_exception exception = { }; | |
6029 | int err; | |
6030 | do { | |
6031 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6032 | switch (err) { | |
6033 | case 0: | |
6034 | case -NFS4ERR_WRONGSEC: | |
6035 | case -NFS4ERR_NOTSUPP: | |
6036 | break; | |
6037 | default: | |
6038 | err = nfs4_handle_exception(server, err, &exception); | |
6039 | } | |
6040 | } while (exception.retry); | |
6041 | return err; | |
6042 | } | |
6043 | ||
6044 | static int | |
6045 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
6046 | struct nfs_fsinfo *info) | |
6047 | { | |
6048 | int err; | |
6049 | struct page *page; | |
6050 | rpc_authflavor_t flavor; | |
6051 | struct nfs4_secinfo_flavors *flavors; | |
6052 | ||
6053 | page = alloc_page(GFP_KERNEL); | |
6054 | if (!page) { | |
6055 | err = -ENOMEM; | |
6056 | goto out; | |
6057 | } | |
6058 | ||
6059 | flavors = page_address(page); | |
6060 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6061 | ||
6062 | /* | |
6063 | * Fall back on "guess and check" method if | |
6064 | * the server doesn't support SECINFO_NO_NAME | |
6065 | */ | |
6066 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
6067 | err = nfs4_find_root_sec(server, fhandle, info); | |
6068 | goto out_freepage; | |
6069 | } | |
6070 | if (err) | |
6071 | goto out_freepage; | |
6072 | ||
6073 | flavor = nfs_find_best_sec(flavors); | |
6074 | if (err == 0) | |
6075 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
6076 | ||
6077 | out_freepage: | |
6078 | put_page(page); | |
6079 | if (err == -EACCES) | |
6080 | return -EPERM; | |
6081 | out: | |
6082 | return err; | |
6083 | } | |
7d974794 BS |
6084 | static int _nfs41_test_stateid(struct nfs_server *server, struct nfs4_state *state) |
6085 | { | |
6086 | int status; | |
6087 | struct nfs41_test_stateid_args args = { | |
6088 | .stateid = &state->stateid, | |
6089 | }; | |
6090 | struct nfs41_test_stateid_res res; | |
6091 | struct rpc_message msg = { | |
6092 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
6093 | .rpc_argp = &args, | |
6094 | .rpc_resp = &res, | |
6095 | }; | |
6096 | args.seq_args.sa_session = res.seq_res.sr_session = NULL; | |
6097 | status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 0, 1); | |
6098 | return status; | |
6099 | } | |
6100 | ||
6101 | static int nfs41_test_stateid(struct nfs_server *server, struct nfs4_state *state) | |
6102 | { | |
6103 | struct nfs4_exception exception = { }; | |
6104 | int err; | |
6105 | do { | |
6106 | err = nfs4_handle_exception(server, | |
6107 | _nfs41_test_stateid(server, state), | |
6108 | &exception); | |
6109 | } while (exception.retry); | |
6110 | return err; | |
6111 | } | |
9aeda35f BS |
6112 | |
6113 | static int _nfs4_free_stateid(struct nfs_server *server, struct nfs4_state *state) | |
6114 | { | |
6115 | int status; | |
6116 | struct nfs41_free_stateid_args args = { | |
6117 | .stateid = &state->stateid, | |
6118 | }; | |
6119 | struct nfs41_free_stateid_res res; | |
6120 | struct rpc_message msg = { | |
6121 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
6122 | .rpc_argp = &args, | |
6123 | .rpc_resp = &res, | |
6124 | }; | |
6125 | ||
6126 | args.seq_args.sa_session = res.seq_res.sr_session = NULL; | |
6127 | status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 0, 1); | |
6128 | return status; | |
6129 | } | |
6130 | ||
6131 | static int nfs41_free_stateid(struct nfs_server *server, struct nfs4_state *state) | |
6132 | { | |
6133 | struct nfs4_exception exception = { }; | |
6134 | int err; | |
6135 | do { | |
6136 | err = nfs4_handle_exception(server, | |
6137 | _nfs4_free_stateid(server, state), | |
6138 | &exception); | |
6139 | } while (exception.retry); | |
6140 | return err; | |
6141 | } | |
557134a3 AA |
6142 | #endif /* CONFIG_NFS_V4_1 */ |
6143 | ||
591d71cb | 6144 | struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 6145 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 6146 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
6147 | .recover_open = nfs4_open_reclaim, |
6148 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 6149 | .establish_clid = nfs4_init_clientid, |
90a16617 | 6150 | .get_clid_cred = nfs4_get_setclientid_cred, |
1da177e4 LT |
6151 | }; |
6152 | ||
591d71cb AA |
6153 | #if defined(CONFIG_NFS_V4_1) |
6154 | struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { | |
6155 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, | |
6156 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
6157 | .recover_open = nfs4_open_reclaim, | |
6158 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 6159 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6160 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 6161 | .reclaim_complete = nfs41_proc_reclaim_complete, |
591d71cb AA |
6162 | }; |
6163 | #endif /* CONFIG_NFS_V4_1 */ | |
6164 | ||
6165 | struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { | |
6166 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, | |
6167 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
6168 | .recover_open = nfs4_open_expired, | |
6169 | .recover_lock = nfs4_lock_expired, | |
6170 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 6171 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
6172 | }; |
6173 | ||
6174 | #if defined(CONFIG_NFS_V4_1) | |
6175 | struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { | |
7eff03ae | 6176 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 6177 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
6178 | .recover_open = nfs41_open_expired, |
6179 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 6180 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6181 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 6182 | }; |
591d71cb | 6183 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 6184 | |
29fba38b BH |
6185 | struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
6186 | .sched_state_renewal = nfs4_proc_async_renew, | |
a7b72103 | 6187 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 6188 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
6189 | }; |
6190 | ||
6191 | #if defined(CONFIG_NFS_V4_1) | |
6192 | struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { | |
6193 | .sched_state_renewal = nfs41_proc_async_sequence, | |
a7b72103 | 6194 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 6195 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
6196 | }; |
6197 | #endif | |
6198 | ||
97dc1359 TM |
6199 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
6200 | .minor_version = 0, | |
6201 | .call_sync = _nfs4_call_sync, | |
e047a10c | 6202 | .validate_stateid = nfs4_validate_delegation_stateid, |
fca78d6d | 6203 | .find_root_sec = nfs4_find_root_sec, |
c48f4f35 TM |
6204 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
6205 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
6206 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
6207 | }; |
6208 | ||
6209 | #if defined(CONFIG_NFS_V4_1) | |
6210 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
6211 | .minor_version = 1, | |
6212 | .call_sync = _nfs4_call_sync_session, | |
e047a10c | 6213 | .validate_stateid = nfs41_validate_delegation_stateid, |
fca78d6d | 6214 | .find_root_sec = nfs41_find_root_sec, |
c48f4f35 TM |
6215 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
6216 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
6217 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
6218 | }; |
6219 | #endif | |
6220 | ||
97dc1359 TM |
6221 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
6222 | [0] = &nfs_v4_0_minor_ops, | |
6223 | #if defined(CONFIG_NFS_V4_1) | |
6224 | [1] = &nfs_v4_1_minor_ops, | |
6225 | #endif | |
6226 | }; | |
6227 | ||
92e1d5be | 6228 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
6229 | .permission = nfs_permission, |
6230 | .getattr = nfs_getattr, | |
6231 | .setattr = nfs_setattr, | |
64c2ce8b AK |
6232 | .getxattr = generic_getxattr, |
6233 | .setxattr = generic_setxattr, | |
6234 | .listxattr = generic_listxattr, | |
6235 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
6236 | }; |
6237 | ||
509de811 | 6238 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
6239 | .version = 4, /* protocol version */ |
6240 | .dentry_ops = &nfs4_dentry_operations, | |
6241 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 6242 | .file_inode_ops = &nfs4_file_inode_operations, |
1da177e4 LT |
6243 | .getroot = nfs4_proc_get_root, |
6244 | .getattr = nfs4_proc_getattr, | |
6245 | .setattr = nfs4_proc_setattr, | |
6246 | .lookup = nfs4_proc_lookup, | |
6247 | .access = nfs4_proc_access, | |
6248 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
6249 | .create = nfs4_proc_create, |
6250 | .remove = nfs4_proc_remove, | |
6251 | .unlink_setup = nfs4_proc_unlink_setup, | |
6252 | .unlink_done = nfs4_proc_unlink_done, | |
6253 | .rename = nfs4_proc_rename, | |
d3d4152a JL |
6254 | .rename_setup = nfs4_proc_rename_setup, |
6255 | .rename_done = nfs4_proc_rename_done, | |
1da177e4 LT |
6256 | .link = nfs4_proc_link, |
6257 | .symlink = nfs4_proc_symlink, | |
6258 | .mkdir = nfs4_proc_mkdir, | |
6259 | .rmdir = nfs4_proc_remove, | |
6260 | .readdir = nfs4_proc_readdir, | |
6261 | .mknod = nfs4_proc_mknod, | |
6262 | .statfs = nfs4_proc_statfs, | |
6263 | .fsinfo = nfs4_proc_fsinfo, | |
6264 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 6265 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
6266 | .decode_dirent = nfs4_decode_dirent, |
6267 | .read_setup = nfs4_proc_read_setup, | |
ec06c096 | 6268 | .read_done = nfs4_read_done, |
1da177e4 | 6269 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 6270 | .write_done = nfs4_write_done, |
1da177e4 | 6271 | .commit_setup = nfs4_proc_commit_setup, |
788e7a89 | 6272 | .commit_done = nfs4_commit_done, |
1da177e4 | 6273 | .lock = nfs4_proc_lock, |
e50a1c2e | 6274 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 6275 | .close_context = nfs4_close_context, |
2b484297 | 6276 | .open_context = nfs4_atomic_open, |
45a52a02 | 6277 | .init_client = nfs4_init_client, |
5a5ea0d4 | 6278 | .secinfo = nfs4_proc_secinfo, |
1da177e4 LT |
6279 | }; |
6280 | ||
64c2ce8b AK |
6281 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
6282 | .prefix = XATTR_NAME_NFSV4_ACL, | |
6283 | .list = nfs4_xattr_list_nfs4_acl, | |
6284 | .get = nfs4_xattr_get_nfs4_acl, | |
6285 | .set = nfs4_xattr_set_nfs4_acl, | |
6286 | }; | |
6287 | ||
6288 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
6289 | &nfs4_xattr_nfs4_acl_handler, | |
6290 | NULL | |
6291 | }; | |
6292 | ||
1da177e4 LT |
6293 | /* |
6294 | * Local variables: | |
6295 | * c-basic-offset: 8 | |
6296 | * End: | |
6297 | */ |