Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * fs/nfs/nfs4proc.c | |
3 | * | |
4 | * Client-side procedure declarations for NFSv4. | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
36 | */ | |
37 | ||
38 | #include <linux/mm.h> | |
1da177e4 LT |
39 | #include <linux/delay.h> |
40 | #include <linux/errno.h> | |
41 | #include <linux/string.h> | |
652f89f6 TM |
42 | #include <linux/ratelimit.h> |
43 | #include <linux/printk.h> | |
5a0e3ad6 | 44 | #include <linux/slab.h> |
1da177e4 | 45 | #include <linux/sunrpc/clnt.h> |
8f70e95f | 46 | #include <linux/sunrpc/gss_api.h> |
1da177e4 LT |
47 | #include <linux/nfs.h> |
48 | #include <linux/nfs4.h> | |
49 | #include <linux/nfs_fs.h> | |
50 | #include <linux/nfs_page.h> | |
9b7160c5 | 51 | #include <linux/nfs_mount.h> |
1da177e4 | 52 | #include <linux/namei.h> |
02a913a7 | 53 | #include <linux/mount.h> |
99fe60d0 | 54 | #include <linux/module.h> |
6926afd1 | 55 | #include <linux/nfs_idmap.h> |
5a0ffe54 | 56 | #include <linux/sunrpc/bc_xprt.h> |
64c2ce8b | 57 | #include <linux/xattr.h> |
c7a360b0 | 58 | #include <linux/utsname.h> |
d310310c | 59 | #include <linux/freezer.h> |
1da177e4 | 60 | |
4ce79717 | 61 | #include "nfs4_fs.h" |
1da177e4 | 62 | #include "delegation.h" |
101070ca | 63 | #include "internal.h" |
006ea73e | 64 | #include "iostat.h" |
fc931582 | 65 | #include "callback.h" |
b1f69b75 | 66 | #include "pnfs.h" |
1da177e4 LT |
67 | |
68 | #define NFSDBG_FACILITY NFSDBG_PROC | |
69 | ||
2066fe89 | 70 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
71 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
72 | ||
a78cb57a TM |
73 | #define NFS4_MAX_LOOP_ON_RECOVER (10) |
74 | ||
ef159e91 TM |
75 | static unsigned short max_session_slots = NFS4_DEF_SLOT_TABLE_SIZE; |
76 | ||
cdd4e68b | 77 | struct nfs4_opendata; |
864472e9 | 78 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
b257957e | 79 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data); |
1da177e4 | 80 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
9e33bed5 | 81 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *); |
9936781d | 82 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr); |
0ab64e0e TM |
83 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
84 | struct nfs_fattr *fattr, struct iattr *sattr, | |
85 | struct nfs4_state *state); | |
f062eb6c | 86 | #ifdef CONFIG_NFS_V4_1 |
1cab0652 BS |
87 | static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *); |
88 | static int nfs41_free_stateid(struct nfs_server *, nfs4_stateid *); | |
f062eb6c | 89 | #endif |
1da177e4 | 90 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 91 | static int nfs4_map_errors(int err) |
1da177e4 | 92 | { |
52567b03 TM |
93 | if (err >= -1000) |
94 | return err; | |
95 | switch (err) { | |
96 | case -NFS4ERR_RESOURCE: | |
97 | return -EREMOTEIO; | |
7ebb9315 BS |
98 | case -NFS4ERR_WRONGSEC: |
99 | return -EPERM; | |
3ddeb7c5 TM |
100 | case -NFS4ERR_BADOWNER: |
101 | case -NFS4ERR_BADNAME: | |
102 | return -EINVAL; | |
52567b03 | 103 | default: |
1da177e4 | 104 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 105 | __func__, -err); |
52567b03 | 106 | break; |
1da177e4 | 107 | } |
52567b03 | 108 | return -EIO; |
1da177e4 LT |
109 | } |
110 | ||
111 | /* | |
112 | * This is our standard bitmap for GETATTR requests. | |
113 | */ | |
114 | const u32 nfs4_fattr_bitmap[2] = { | |
115 | FATTR4_WORD0_TYPE | |
116 | | FATTR4_WORD0_CHANGE | |
117 | | FATTR4_WORD0_SIZE | |
118 | | FATTR4_WORD0_FSID | |
119 | | FATTR4_WORD0_FILEID, | |
120 | FATTR4_WORD1_MODE | |
121 | | FATTR4_WORD1_NUMLINKS | |
122 | | FATTR4_WORD1_OWNER | |
123 | | FATTR4_WORD1_OWNER_GROUP | |
124 | | FATTR4_WORD1_RAWDEV | |
125 | | FATTR4_WORD1_SPACE_USED | |
126 | | FATTR4_WORD1_TIME_ACCESS | |
127 | | FATTR4_WORD1_TIME_METADATA | |
128 | | FATTR4_WORD1_TIME_MODIFY | |
129 | }; | |
130 | ||
131 | const u32 nfs4_statfs_bitmap[2] = { | |
132 | FATTR4_WORD0_FILES_AVAIL | |
133 | | FATTR4_WORD0_FILES_FREE | |
134 | | FATTR4_WORD0_FILES_TOTAL, | |
135 | FATTR4_WORD1_SPACE_AVAIL | |
136 | | FATTR4_WORD1_SPACE_FREE | |
137 | | FATTR4_WORD1_SPACE_TOTAL | |
138 | }; | |
139 | ||
4ce79717 | 140 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
141 | FATTR4_WORD0_MAXLINK |
142 | | FATTR4_WORD0_MAXNAME, | |
143 | 0 | |
144 | }; | |
145 | ||
dae100c2 | 146 | const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE |
1da177e4 LT |
147 | | FATTR4_WORD0_MAXREAD |
148 | | FATTR4_WORD0_MAXWRITE | |
149 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 150 | FATTR4_WORD1_TIME_DELTA |
dae100c2 FI |
151 | | FATTR4_WORD1_FS_LAYOUT_TYPES, |
152 | FATTR4_WORD2_LAYOUT_BLKSIZE | |
1da177e4 LT |
153 | }; |
154 | ||
830b8e33 MN |
155 | const u32 nfs4_fs_locations_bitmap[2] = { |
156 | FATTR4_WORD0_TYPE | |
157 | | FATTR4_WORD0_CHANGE | |
158 | | FATTR4_WORD0_SIZE | |
159 | | FATTR4_WORD0_FSID | |
160 | | FATTR4_WORD0_FILEID | |
161 | | FATTR4_WORD0_FS_LOCATIONS, | |
162 | FATTR4_WORD1_MODE | |
163 | | FATTR4_WORD1_NUMLINKS | |
164 | | FATTR4_WORD1_OWNER | |
165 | | FATTR4_WORD1_OWNER_GROUP | |
166 | | FATTR4_WORD1_RAWDEV | |
167 | | FATTR4_WORD1_SPACE_USED | |
168 | | FATTR4_WORD1_TIME_ACCESS | |
169 | | FATTR4_WORD1_TIME_METADATA | |
170 | | FATTR4_WORD1_TIME_MODIFY | |
171 | | FATTR4_WORD1_MOUNTED_ON_FILEID | |
172 | }; | |
173 | ||
bc4785cd | 174 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
175 | struct nfs4_readdir_arg *readdir) |
176 | { | |
0dbb4c67 | 177 | __be32 *start, *p; |
1da177e4 LT |
178 | |
179 | BUG_ON(readdir->count < 80); | |
180 | if (cookie > 2) { | |
b7ef1956 | 181 | readdir->cookie = cookie; |
1da177e4 LT |
182 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
183 | return; | |
184 | } | |
185 | ||
186 | readdir->cookie = 0; | |
187 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
188 | if (cookie == 2) | |
189 | return; | |
190 | ||
191 | /* | |
192 | * NFSv4 servers do not return entries for '.' and '..' | |
193 | * Therefore, we fake these entries here. We let '.' | |
194 | * have cookie 0 and '..' have cookie 1. Note that | |
195 | * when talking to the server, we always send cookie 0 | |
196 | * instead of 1 or 2. | |
197 | */ | |
0dbb4c67 | 198 | start = p = kmap_atomic(*readdir->pages, KM_USER0); |
1da177e4 LT |
199 | |
200 | if (cookie == 0) { | |
201 | *p++ = xdr_one; /* next */ | |
202 | *p++ = xdr_zero; /* cookie, first word */ | |
203 | *p++ = xdr_one; /* cookie, second word */ | |
204 | *p++ = xdr_one; /* entry len */ | |
205 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
206 | p++; | |
207 | *p++ = xdr_one; /* bitmap length */ | |
208 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
209 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 210 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
211 | } |
212 | ||
213 | *p++ = xdr_one; /* next */ | |
214 | *p++ = xdr_zero; /* cookie, first word */ | |
215 | *p++ = xdr_two; /* cookie, second word */ | |
216 | *p++ = xdr_two; /* entry len */ | |
217 | memcpy(p, "..\0\0", 4); /* entry */ | |
218 | p++; | |
219 | *p++ = xdr_one; /* bitmap length */ | |
220 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
221 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 222 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
223 | |
224 | readdir->pgbase = (char *)p - (char *)start; | |
225 | readdir->count -= readdir->pgbase; | |
226 | kunmap_atomic(start, KM_USER0); | |
227 | } | |
228 | ||
65de872e TM |
229 | static int nfs4_wait_clnt_recover(struct nfs_client *clp) |
230 | { | |
231 | int res; | |
232 | ||
233 | might_sleep(); | |
234 | ||
e005e804 | 235 | res = wait_on_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING, |
72cb77f4 | 236 | nfs_wait_bit_killable, TASK_KILLABLE); |
65de872e TM |
237 | return res; |
238 | } | |
239 | ||
240 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) | |
241 | { | |
242 | int res = 0; | |
243 | ||
244 | might_sleep(); | |
245 | ||
246 | if (*timeout <= 0) | |
247 | *timeout = NFS4_POLL_RETRY_MIN; | |
248 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
249 | *timeout = NFS4_POLL_RETRY_MAX; | |
d310310c | 250 | freezable_schedule_timeout_killable(*timeout); |
65de872e TM |
251 | if (fatal_signal_pending(current)) |
252 | res = -ERESTARTSYS; | |
253 | *timeout <<= 1; | |
254 | return res; | |
255 | } | |
256 | ||
257 | /* This is the error handling routine for processes that are allowed | |
258 | * to sleep. | |
259 | */ | |
b064eca2 | 260 | static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
65de872e TM |
261 | { |
262 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 263 | struct nfs4_state *state = exception->state; |
65de872e TM |
264 | int ret = errorcode; |
265 | ||
266 | exception->retry = 0; | |
267 | switch(errorcode) { | |
268 | case 0: | |
269 | return 0; | |
9e33bed5 TM |
270 | case -NFS4ERR_ADMIN_REVOKED: |
271 | case -NFS4ERR_BAD_STATEID: | |
272 | case -NFS4ERR_OPENMODE: | |
273 | if (state == NULL) | |
274 | break; | |
0400a6b0 TM |
275 | nfs4_schedule_stateid_recovery(server, state); |
276 | goto wait_on_recovery; | |
0ced63d1 TM |
277 | case -NFS4ERR_EXPIRED: |
278 | if (state != NULL) | |
279 | nfs4_schedule_stateid_recovery(server, state); | |
65de872e | 280 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 281 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
282 | nfs4_schedule_lease_recovery(clp); |
283 | goto wait_on_recovery; | |
03391693 | 284 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
285 | case -NFS4ERR_BADSESSION: |
286 | case -NFS4ERR_BADSLOT: | |
287 | case -NFS4ERR_BAD_HIGH_SLOT: | |
288 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
289 | case -NFS4ERR_DEADSESSION: | |
290 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
291 | case -NFS4ERR_SEQ_MISORDERED: | |
292 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
293 | errorcode); | |
0400a6b0 | 294 | nfs4_schedule_session_recovery(clp->cl_session); |
4745e315 | 295 | exception->retry = 1; |
b9179237 | 296 | break; |
03391693 | 297 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 298 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
299 | if (exception->timeout > HZ) { |
300 | /* We have retried a decent amount, time to | |
301 | * fail | |
302 | */ | |
303 | ret = -EBUSY; | |
304 | break; | |
305 | } | |
65de872e TM |
306 | case -NFS4ERR_GRACE: |
307 | case -NFS4ERR_DELAY: | |
2c643488 | 308 | case -EKEYEXPIRED: |
65de872e TM |
309 | ret = nfs4_delay(server->client, &exception->timeout); |
310 | if (ret != 0) | |
311 | break; | |
a8a4ae3a | 312 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
313 | case -NFS4ERR_OLD_STATEID: |
314 | exception->retry = 1; | |
b064eca2 TM |
315 | break; |
316 | case -NFS4ERR_BADOWNER: | |
317 | /* The following works around a Linux server bug! */ | |
318 | case -NFS4ERR_BADNAME: | |
319 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
320 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
321 | exception->retry = 1; | |
322 | printk(KERN_WARNING "NFS: v4 server %s " | |
323 | "does not accept raw " | |
324 | "uid/gids. " | |
325 | "Reenabling the idmapper.\n", | |
326 | server->nfs_client->cl_hostname); | |
327 | } | |
65de872e TM |
328 | } |
329 | /* We failed to handle the error */ | |
330 | return nfs4_map_errors(ret); | |
0400a6b0 | 331 | wait_on_recovery: |
a2c0b9e2 TM |
332 | ret = nfs4_wait_clnt_recover(clp); |
333 | if (ret == 0) | |
334 | exception->retry = 1; | |
335 | return ret; | |
65de872e TM |
336 | } |
337 | ||
338 | ||
452e9352 | 339 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 340 | { |
1da177e4 LT |
341 | spin_lock(&clp->cl_lock); |
342 | if (time_before(clp->cl_last_renewal,timestamp)) | |
343 | clp->cl_last_renewal = timestamp; | |
344 | spin_unlock(&clp->cl_lock); | |
345 | } | |
346 | ||
452e9352 TM |
347 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
348 | { | |
349 | do_renew_lease(server->nfs_client, timestamp); | |
350 | } | |
351 | ||
cccef3b9 AA |
352 | #if defined(CONFIG_NFS_V4_1) |
353 | ||
e2c4ab3c AA |
354 | /* |
355 | * nfs4_free_slot - free a slot and efficiently update slot table. | |
356 | * | |
357 | * freeing a slot is trivially done by clearing its respective bit | |
358 | * in the bitmap. | |
359 | * If the freed slotid equals highest_used_slotid we want to update it | |
360 | * so that the server would be able to size down the slot table if needed, | |
361 | * otherwise we know that the highest_used_slotid is still in use. | |
362 | * When updating highest_used_slotid there may be "holes" in the bitmap | |
363 | * so we need to scan down from highest_used_slotid to 0 looking for the now | |
364 | * highest slotid in use. | |
45d43c29 | 365 | * If none found, highest_used_slotid is set to NFS4_NO_SLOT. |
35dc1d74 TM |
366 | * |
367 | * Must be called while holding tbl->slot_tbl_lock | |
e2c4ab3c AA |
368 | */ |
369 | static void | |
45d43c29 | 370 | nfs4_free_slot(struct nfs4_slot_table *tbl, u32 slotid) |
e2c4ab3c | 371 | { |
45d43c29 | 372 | BUG_ON(slotid >= NFS4_MAX_SLOT_TABLE); |
e2c4ab3c AA |
373 | /* clear used bit in bitmap */ |
374 | __clear_bit(slotid, tbl->used_slots); | |
375 | ||
376 | /* update highest_used_slotid when it is freed */ | |
377 | if (slotid == tbl->highest_used_slotid) { | |
378 | slotid = find_last_bit(tbl->used_slots, tbl->max_slots); | |
bcb56164 | 379 | if (slotid < tbl->max_slots) |
e2c4ab3c AA |
380 | tbl->highest_used_slotid = slotid; |
381 | else | |
45d43c29 | 382 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
e2c4ab3c | 383 | } |
45d43c29 TM |
384 | dprintk("%s: slotid %u highest_used_slotid %d\n", __func__, |
385 | slotid, tbl->highest_used_slotid); | |
e2c4ab3c AA |
386 | } |
387 | ||
961a828d TM |
388 | bool nfs4_set_task_privileged(struct rpc_task *task, void *dummy) |
389 | { | |
390 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
391 | return true; | |
392 | } | |
393 | ||
3bfb0fc5 | 394 | /* |
42acd021 | 395 | * Signal state manager thread if session fore channel is drained |
3bfb0fc5 | 396 | */ |
42acd021 | 397 | static void nfs4_check_drain_fc_complete(struct nfs4_session *ses) |
3bfb0fc5 | 398 | { |
a2118c33 | 399 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state)) { |
961a828d TM |
400 | rpc_wake_up_first(&ses->fc_slot_table.slot_tbl_waitq, |
401 | nfs4_set_task_privileged, NULL); | |
3bfb0fc5 AB |
402 | return; |
403 | } | |
404 | ||
45d43c29 | 405 | if (ses->fc_slot_table.highest_used_slotid != NFS4_NO_SLOT) |
3bfb0fc5 AB |
406 | return; |
407 | ||
42acd021 AA |
408 | dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__); |
409 | complete(&ses->fc_slot_table.complete); | |
410 | } | |
411 | ||
412 | /* | |
413 | * Signal state manager thread if session back channel is drained | |
414 | */ | |
415 | void nfs4_check_drain_bc_complete(struct nfs4_session *ses) | |
416 | { | |
417 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state) || | |
45d43c29 | 418 | ses->bc_slot_table.highest_used_slotid != NFS4_NO_SLOT) |
42acd021 AA |
419 | return; |
420 | dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__); | |
421 | complete(&ses->bc_slot_table.complete); | |
3bfb0fc5 AB |
422 | } |
423 | ||
d185a334 | 424 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 AA |
425 | { |
426 | struct nfs4_slot_table *tbl; | |
427 | ||
d185a334 | 428 | tbl = &res->sr_session->fc_slot_table; |
dfb4f309 | 429 | if (!res->sr_slot) { |
13615871 AA |
430 | /* just wake up the next guy waiting since |
431 | * we may have not consumed a slot after all */ | |
691daf3b | 432 | dprintk("%s: No slot\n", __func__); |
35dc1d74 | 433 | return; |
13615871 | 434 | } |
ea028ac9 | 435 | |
35dc1d74 | 436 | spin_lock(&tbl->slot_tbl_lock); |
aabd0b40 | 437 | nfs4_free_slot(tbl, res->sr_slot - tbl->slots); |
42acd021 | 438 | nfs4_check_drain_fc_complete(res->sr_session); |
35dc1d74 | 439 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 440 | res->sr_slot = NULL; |
13615871 AA |
441 | } |
442 | ||
14516c3a | 443 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c AA |
444 | { |
445 | unsigned long timestamp; | |
14516c3a | 446 | struct nfs_client *clp; |
b0df806c AA |
447 | |
448 | /* | |
449 | * sr_status remains 1 if an RPC level error occurred. The server | |
450 | * may or may not have processed the sequence operation.. | |
451 | * Proceed as if the server received and processed the sequence | |
452 | * operation. | |
453 | */ | |
454 | if (res->sr_status == 1) | |
455 | res->sr_status = NFS_OK; | |
456 | ||
468f8613 BS |
457 | /* don't increment the sequence number if the task wasn't sent */ |
458 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
459 | goto out; |
460 | ||
691daf3b | 461 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
462 | switch (res->sr_status) { |
463 | case 0: | |
b0df806c | 464 | /* Update the slot's sequence and clientid lease timer */ |
dfb4f309 | 465 | ++res->sr_slot->seq_nr; |
b0df806c | 466 | timestamp = res->sr_renewal_time; |
14516c3a | 467 | clp = res->sr_session->clp; |
452e9352 | 468 | do_renew_lease(clp, timestamp); |
0629e370 | 469 | /* Check sequence flags */ |
b4410c2f TM |
470 | if (res->sr_status_flags != 0) |
471 | nfs4_schedule_lease_recovery(clp); | |
14516c3a TM |
472 | break; |
473 | case -NFS4ERR_DELAY: | |
474 | /* The server detected a resend of the RPC call and | |
475 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
476 | * of RFC5661. | |
477 | */ | |
12364a4f | 478 | dprintk("%s: slot=%td seq=%d: Operation in progress\n", |
dfb4f309 BH |
479 | __func__, |
480 | res->sr_slot - res->sr_session->fc_slot_table.slots, | |
481 | res->sr_slot->seq_nr); | |
14516c3a TM |
482 | goto out_retry; |
483 | default: | |
484 | /* Just update the slot sequence no. */ | |
dfb4f309 | 485 | ++res->sr_slot->seq_nr; |
b0df806c AA |
486 | } |
487 | out: | |
488 | /* The session may be reset by one of the error handlers. */ | |
489 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 490 | nfs41_sequence_free_slot(res); |
14516c3a TM |
491 | return 1; |
492 | out_retry: | |
d05dd4e9 | 493 | if (!rpc_restart_call(task)) |
14516c3a TM |
494 | goto out; |
495 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
496 | return 0; | |
b0df806c AA |
497 | } |
498 | ||
14516c3a TM |
499 | static int nfs4_sequence_done(struct rpc_task *task, |
500 | struct nfs4_sequence_res *res) | |
df896455 | 501 | { |
14516c3a TM |
502 | if (res->sr_session == NULL) |
503 | return 1; | |
504 | return nfs41_sequence_done(task, res); | |
df896455 TM |
505 | } |
506 | ||
510b8175 BH |
507 | /* |
508 | * nfs4_find_slot - efficiently look for a free slot | |
509 | * | |
510 | * nfs4_find_slot looks for an unset bit in the used_slots bitmap. | |
511 | * If found, we mark the slot as used, update the highest_used_slotid, | |
512 | * and respectively set up the sequence operation args. | |
45d43c29 | 513 | * The slot number is returned if found, or NFS4_NO_SLOT otherwise. |
fbcd4abc AA |
514 | * |
515 | * Note: must be called with under the slot_tbl_lock. | |
510b8175 | 516 | */ |
45d43c29 | 517 | static u32 |
40ead580 | 518 | nfs4_find_slot(struct nfs4_slot_table *tbl) |
510b8175 | 519 | { |
45d43c29 TM |
520 | u32 slotid; |
521 | u32 ret_id = NFS4_NO_SLOT; | |
510b8175 | 522 | |
45d43c29 | 523 | dprintk("--> %s used_slots=%04lx highest_used=%u max_slots=%u\n", |
510b8175 BH |
524 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, |
525 | tbl->max_slots); | |
526 | slotid = find_first_zero_bit(tbl->used_slots, tbl->max_slots); | |
527 | if (slotid >= tbl->max_slots) | |
528 | goto out; | |
529 | __set_bit(slotid, tbl->used_slots); | |
45d43c29 TM |
530 | if (slotid > tbl->highest_used_slotid || |
531 | tbl->highest_used_slotid == NFS4_NO_SLOT) | |
510b8175 BH |
532 | tbl->highest_used_slotid = slotid; |
533 | ret_id = slotid; | |
534 | out: | |
535 | dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n", | |
536 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, ret_id); | |
510b8175 BH |
537 | return ret_id; |
538 | } | |
539 | ||
9d12b216 TM |
540 | static void nfs41_init_sequence(struct nfs4_sequence_args *args, |
541 | struct nfs4_sequence_res *res, int cache_reply) | |
542 | { | |
543 | args->sa_session = NULL; | |
544 | args->sa_cache_this = 0; | |
545 | if (cache_reply) | |
546 | args->sa_cache_this = 1; | |
547 | res->sr_session = NULL; | |
548 | res->sr_slot = NULL; | |
549 | } | |
550 | ||
dc70d7b3 | 551 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
552 | struct nfs4_sequence_args *args, |
553 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
554 | struct rpc_task *task) |
555 | { | |
fbcd4abc AA |
556 | struct nfs4_slot *slot; |
557 | struct nfs4_slot_table *tbl; | |
45d43c29 | 558 | u32 slotid; |
fbcd4abc AA |
559 | |
560 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 561 | /* slot already allocated? */ |
dfb4f309 | 562 | if (res->sr_slot != NULL) |
ce5039c1 AA |
563 | return 0; |
564 | ||
fbcd4abc AA |
565 | tbl = &session->fc_slot_table; |
566 | ||
567 | spin_lock(&tbl->slot_tbl_lock); | |
a2118c33 | 568 | if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) && |
5601a00d | 569 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { |
0b1c8fc4 | 570 | /* The state manager will wait until the slot table is empty */ |
05f0d236 | 571 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
b069d94a | 572 | spin_unlock(&tbl->slot_tbl_lock); |
0b1c8fc4 | 573 | dprintk("%s session is draining\n", __func__); |
05f0d236 | 574 | return -EAGAIN; |
b069d94a AA |
575 | } |
576 | ||
689cf5c1 AB |
577 | if (!rpc_queue_empty(&tbl->slot_tbl_waitq) && |
578 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { | |
579 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
580 | spin_unlock(&tbl->slot_tbl_lock); | |
581 | dprintk("%s enforce FIFO order\n", __func__); | |
582 | return -EAGAIN; | |
583 | } | |
584 | ||
40ead580 | 585 | slotid = nfs4_find_slot(tbl); |
45d43c29 | 586 | if (slotid == NFS4_NO_SLOT) { |
fbcd4abc AA |
587 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
588 | spin_unlock(&tbl->slot_tbl_lock); | |
589 | dprintk("<-- %s: no free slots\n", __func__); | |
590 | return -EAGAIN; | |
591 | } | |
592 | spin_unlock(&tbl->slot_tbl_lock); | |
593 | ||
689cf5c1 | 594 | rpc_task_set_priority(task, RPC_PRIORITY_NORMAL); |
fbcd4abc | 595 | slot = tbl->slots + slotid; |
99fe60d0 | 596 | args->sa_session = session; |
fbcd4abc | 597 | args->sa_slotid = slotid; |
fbcd4abc AA |
598 | |
599 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, slotid, slot->seq_nr); | |
600 | ||
99fe60d0 | 601 | res->sr_session = session; |
dfb4f309 | 602 | res->sr_slot = slot; |
fbcd4abc | 603 | res->sr_renewal_time = jiffies; |
2a6e26cd | 604 | res->sr_status_flags = 0; |
fbcd4abc AA |
605 | /* |
606 | * sr_status is only set in decode_sequence, and so will remain | |
607 | * set to 1 if an rpc level failure occurs. | |
608 | */ | |
609 | res->sr_status = 1; | |
ce5039c1 AA |
610 | return 0; |
611 | } | |
dc70d7b3 | 612 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 613 | |
035168ab | 614 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
615 | struct nfs4_sequence_args *args, |
616 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
617 | struct rpc_task *task) |
618 | { | |
035168ab | 619 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
620 | int ret = 0; |
621 | ||
9d12b216 | 622 | if (session == NULL) |
035168ab | 623 | goto out; |
035168ab | 624 | |
12364a4f | 625 | dprintk("--> %s clp %p session %p sr_slot %td\n", |
dfb4f309 BH |
626 | __func__, session->clp, session, res->sr_slot ? |
627 | res->sr_slot - session->fc_slot_table.slots : -1); | |
ce5039c1 | 628 | |
9d12b216 | 629 | ret = nfs41_setup_sequence(session, args, res, task); |
ce5039c1 AA |
630 | out: |
631 | dprintk("<-- %s status=%d\n", __func__, ret); | |
632 | return ret; | |
633 | } | |
634 | ||
635 | struct nfs41_call_sync_data { | |
035168ab | 636 | const struct nfs_server *seq_server; |
ce5039c1 AA |
637 | struct nfs4_sequence_args *seq_args; |
638 | struct nfs4_sequence_res *seq_res; | |
ce5039c1 AA |
639 | }; |
640 | ||
641 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
642 | { | |
643 | struct nfs41_call_sync_data *data = calldata; | |
644 | ||
035168ab TM |
645 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
646 | ||
647 | if (nfs4_setup_sequence(data->seq_server, data->seq_args, | |
9d12b216 | 648 | data->seq_res, task)) |
ce5039c1 AA |
649 | return; |
650 | rpc_call_start(task); | |
651 | } | |
652 | ||
b257957e AB |
653 | static void nfs41_call_priv_sync_prepare(struct rpc_task *task, void *calldata) |
654 | { | |
655 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
656 | nfs41_call_sync_prepare(task, calldata); | |
657 | } | |
658 | ||
69ab40c4 AA |
659 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
660 | { | |
661 | struct nfs41_call_sync_data *data = calldata; | |
662 | ||
14516c3a | 663 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
664 | } |
665 | ||
ce5039c1 AA |
666 | struct rpc_call_ops nfs41_call_sync_ops = { |
667 | .rpc_call_prepare = nfs41_call_sync_prepare, | |
69ab40c4 | 668 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
669 | }; |
670 | ||
b257957e AB |
671 | struct rpc_call_ops nfs41_call_priv_sync_ops = { |
672 | .rpc_call_prepare = nfs41_call_priv_sync_prepare, | |
673 | .rpc_call_done = nfs41_call_sync_done, | |
674 | }; | |
675 | ||
7c513058 BS |
676 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
677 | struct nfs_server *server, | |
ce5039c1 AA |
678 | struct rpc_message *msg, |
679 | struct nfs4_sequence_args *args, | |
680 | struct nfs4_sequence_res *res, | |
b257957e | 681 | int privileged) |
ce5039c1 AA |
682 | { |
683 | int ret; | |
684 | struct rpc_task *task; | |
685 | struct nfs41_call_sync_data data = { | |
035168ab | 686 | .seq_server = server, |
ce5039c1 AA |
687 | .seq_args = args, |
688 | .seq_res = res, | |
ce5039c1 AA |
689 | }; |
690 | struct rpc_task_setup task_setup = { | |
7c513058 | 691 | .rpc_client = clnt, |
ce5039c1 AA |
692 | .rpc_message = msg, |
693 | .callback_ops = &nfs41_call_sync_ops, | |
694 | .callback_data = &data | |
695 | }; | |
696 | ||
b257957e AB |
697 | if (privileged) |
698 | task_setup.callback_ops = &nfs41_call_priv_sync_ops; | |
ce5039c1 AA |
699 | task = rpc_run_task(&task_setup); |
700 | if (IS_ERR(task)) | |
701 | ret = PTR_ERR(task); | |
702 | else { | |
703 | ret = task->tk_status; | |
704 | rpc_put_task(task); | |
705 | } | |
706 | return ret; | |
707 | } | |
708 | ||
7c513058 BS |
709 | int _nfs4_call_sync_session(struct rpc_clnt *clnt, |
710 | struct nfs_server *server, | |
cccef3b9 AA |
711 | struct rpc_message *msg, |
712 | struct nfs4_sequence_args *args, | |
713 | struct nfs4_sequence_res *res, | |
714 | int cache_reply) | |
715 | { | |
9d12b216 TM |
716 | nfs41_init_sequence(args, res, cache_reply); |
717 | return nfs4_call_sync_sequence(clnt, server, msg, args, res, 0); | |
cccef3b9 AA |
718 | } |
719 | ||
df896455 | 720 | #else |
9d12b216 TM |
721 | static inline |
722 | void nfs41_init_sequence(struct nfs4_sequence_args *args, | |
723 | struct nfs4_sequence_res *res, int cache_reply) | |
724 | { | |
725 | } | |
726 | ||
14516c3a TM |
727 | static int nfs4_sequence_done(struct rpc_task *task, |
728 | struct nfs4_sequence_res *res) | |
df896455 | 729 | { |
14516c3a | 730 | return 1; |
df896455 | 731 | } |
cccef3b9 AA |
732 | #endif /* CONFIG_NFS_V4_1 */ |
733 | ||
7c513058 BS |
734 | int _nfs4_call_sync(struct rpc_clnt *clnt, |
735 | struct nfs_server *server, | |
cccef3b9 AA |
736 | struct rpc_message *msg, |
737 | struct nfs4_sequence_args *args, | |
738 | struct nfs4_sequence_res *res, | |
739 | int cache_reply) | |
740 | { | |
9d12b216 | 741 | nfs41_init_sequence(args, res, cache_reply); |
7c513058 | 742 | return rpc_call_sync(clnt, msg, 0); |
cccef3b9 AA |
743 | } |
744 | ||
e73b83f2 | 745 | static inline |
7c513058 BS |
746 | int nfs4_call_sync(struct rpc_clnt *clnt, |
747 | struct nfs_server *server, | |
e73b83f2 BS |
748 | struct rpc_message *msg, |
749 | struct nfs4_sequence_args *args, | |
750 | struct nfs4_sequence_res *res, | |
751 | int cache_reply) | |
752 | { | |
7c513058 BS |
753 | return server->nfs_client->cl_mvops->call_sync(clnt, server, msg, |
754 | args, res, cache_reply); | |
e73b83f2 | 755 | } |
cccef3b9 | 756 | |
38478b24 | 757 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 758 | { |
38478b24 | 759 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 760 | |
38478b24 | 761 | spin_lock(&dir->i_lock); |
40d24704 | 762 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; |
a9a4a87a | 763 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 764 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 765 | dir->i_version = cinfo->after; |
38478b24 | 766 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
767 | } |
768 | ||
e56e0b78 | 769 | struct nfs4_opendata { |
c6d00e63 | 770 | struct kref kref; |
e56e0b78 TM |
771 | struct nfs_openargs o_arg; |
772 | struct nfs_openres o_res; | |
cdd4e68b TM |
773 | struct nfs_open_confirmargs c_arg; |
774 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
775 | struct nfs4_string owner_name; |
776 | struct nfs4_string group_name; | |
e56e0b78 TM |
777 | struct nfs_fattr f_attr; |
778 | struct nfs_fattr dir_attr; | |
e56e0b78 | 779 | struct dentry *dir; |
82a2c1b7 | 780 | struct dentry *dentry; |
e56e0b78 | 781 | struct nfs4_state_owner *owner; |
aac00a8d | 782 | struct nfs4_state *state; |
e56e0b78 | 783 | struct iattr attrs; |
26e976a8 | 784 | unsigned long timestamp; |
3e309914 | 785 | unsigned int rpc_done : 1; |
24ac23ab TM |
786 | int rpc_status; |
787 | int cancelled; | |
e56e0b78 TM |
788 | }; |
789 | ||
2ced46c2 TM |
790 | |
791 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
792 | { | |
793 | p->o_res.f_attr = &p->f_attr; | |
794 | p->o_res.dir_attr = &p->dir_attr; | |
c1d51931 TM |
795 | p->o_res.seqid = p->o_arg.seqid; |
796 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 TM |
797 | p->o_res.server = p->o_arg.server; |
798 | nfs_fattr_init(&p->f_attr); | |
799 | nfs_fattr_init(&p->dir_attr); | |
6926afd1 | 800 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
801 | } |
802 | ||
82a2c1b7 | 803 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 804 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be TM |
805 | const struct iattr *attrs, |
806 | gfp_t gfp_mask) | |
e56e0b78 | 807 | { |
82a2c1b7 | 808 | struct dentry *parent = dget_parent(dentry); |
e56e0b78 TM |
809 | struct inode *dir = parent->d_inode; |
810 | struct nfs_server *server = NFS_SERVER(dir); | |
811 | struct nfs4_opendata *p; | |
812 | ||
8535b2be | 813 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
814 | if (p == NULL) |
815 | goto err; | |
8535b2be | 816 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 TM |
817 | if (p->o_arg.seqid == NULL) |
818 | goto err_free; | |
82a2c1b7 AV |
819 | nfs_sb_active(dentry->d_sb); |
820 | p->dentry = dget(dentry); | |
e56e0b78 TM |
821 | p->dir = parent; |
822 | p->owner = sp; | |
823 | atomic_inc(&sp->so_count); | |
824 | p->o_arg.fh = NFS_FH(dir); | |
dc0b027d TM |
825 | p->o_arg.open_flags = flags; |
826 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
7539bbab | 827 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 828 | p->o_arg.id = sp->so_seqid.owner_id; |
82a2c1b7 | 829 | p->o_arg.name = &dentry->d_name; |
e56e0b78 TM |
830 | p->o_arg.server = server; |
831 | p->o_arg.bitmask = server->attr_bitmask; | |
6926afd1 | 832 | p->o_arg.dir_bitmask = server->cache_consistency_bitmask; |
e56e0b78 | 833 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; |
536e43d1 | 834 | if (attrs != NULL && attrs->ia_valid != 0) { |
d77d76ff TM |
835 | u32 *s; |
836 | ||
e56e0b78 TM |
837 | p->o_arg.u.attrs = &p->attrs; |
838 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
d77d76ff TM |
839 | s = (u32 *) p->o_arg.u.verifier.data; |
840 | s[0] = jiffies; | |
841 | s[1] = current->pid; | |
e56e0b78 | 842 | } |
cdd4e68b TM |
843 | p->c_arg.fh = &p->o_res.fh; |
844 | p->c_arg.stateid = &p->o_res.stateid; | |
845 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 846 | nfs4_init_opendata_res(p); |
c6d00e63 | 847 | kref_init(&p->kref); |
e56e0b78 TM |
848 | return p; |
849 | err_free: | |
850 | kfree(p); | |
851 | err: | |
852 | dput(parent); | |
853 | return NULL; | |
854 | } | |
855 | ||
c6d00e63 | 856 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 857 | { |
c6d00e63 TM |
858 | struct nfs4_opendata *p = container_of(kref, |
859 | struct nfs4_opendata, kref); | |
82a2c1b7 | 860 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
861 | |
862 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
863 | if (p->state != NULL) |
864 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
865 | nfs4_put_state_owner(p->owner); |
866 | dput(p->dir); | |
82a2c1b7 AV |
867 | dput(p->dentry); |
868 | nfs_sb_deactive(sb); | |
6926afd1 | 869 | nfs_fattr_free_names(&p->f_attr); |
c6d00e63 TM |
870 | kfree(p); |
871 | } | |
872 | ||
873 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
874 | { | |
875 | if (p != NULL) | |
876 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
877 | } |
878 | ||
06f814a3 TM |
879 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
880 | { | |
06f814a3 TM |
881 | int ret; |
882 | ||
06f814a3 | 883 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
884 | return ret; |
885 | } | |
886 | ||
dc0b027d | 887 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
888 | { |
889 | int ret = 0; | |
dc0b027d | 890 | |
536e43d1 | 891 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
892 | goto out; |
893 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 894 | case FMODE_READ: |
88069f77 TM |
895 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
896 | && state->n_rdonly != 0; | |
6ee41268 TM |
897 | break; |
898 | case FMODE_WRITE: | |
88069f77 TM |
899 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
900 | && state->n_wronly != 0; | |
6ee41268 TM |
901 | break; |
902 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
903 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
904 | && state->n_rdwr != 0; | |
6ee41268 | 905 | } |
dc0b027d | 906 | out: |
6ee41268 TM |
907 | return ret; |
908 | } | |
909 | ||
dc0b027d | 910 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 911 | { |
652f89f6 TM |
912 | if (delegation == NULL) |
913 | return 0; | |
dc0b027d | 914 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 915 | return 0; |
15c831bf | 916 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 917 | return 0; |
b7391f44 | 918 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
919 | return 1; |
920 | } | |
921 | ||
dc0b027d | 922 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 923 | { |
dc0b027d | 924 | switch (fmode) { |
e7616923 TM |
925 | case FMODE_WRITE: |
926 | state->n_wronly++; | |
927 | break; | |
928 | case FMODE_READ: | |
929 | state->n_rdonly++; | |
930 | break; | |
931 | case FMODE_READ|FMODE_WRITE: | |
932 | state->n_rdwr++; | |
933 | } | |
dc0b027d | 934 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
935 | } |
936 | ||
dc0b027d | 937 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
938 | { |
939 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
940 | memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data)); | |
941 | memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data)); | |
dc0b027d | 942 | switch (fmode) { |
003707c7 TM |
943 | case FMODE_READ: |
944 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
945 | break; | |
946 | case FMODE_WRITE: | |
947 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
948 | break; | |
949 | case FMODE_READ|FMODE_WRITE: | |
950 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
951 | } | |
e7616923 TM |
952 | } |
953 | ||
dc0b027d | 954 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 955 | { |
8bda4e4c | 956 | write_seqlock(&state->seqlock); |
dc0b027d | 957 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 958 | write_sequnlock(&state->seqlock); |
003707c7 TM |
959 | } |
960 | ||
dc0b027d | 961 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 962 | { |
8bda4e4c TM |
963 | /* |
964 | * Protect the call to nfs4_state_set_mode_locked and | |
965 | * serialise the stateid update | |
966 | */ | |
967 | write_seqlock(&state->seqlock); | |
003707c7 TM |
968 | if (deleg_stateid != NULL) { |
969 | memcpy(state->stateid.data, deleg_stateid->data, sizeof(state->stateid.data)); | |
970 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
971 | } | |
972 | if (open_stateid != NULL) | |
dc0b027d | 973 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
974 | write_sequnlock(&state->seqlock); |
975 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 976 | update_open_stateflags(state, fmode); |
ec073428 | 977 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
978 | } |
979 | ||
dc0b027d | 980 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
981 | { |
982 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
983 | struct nfs_delegation *deleg_cur; | |
984 | int ret = 0; | |
985 | ||
dc0b027d | 986 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
987 | |
988 | rcu_read_lock(); | |
989 | deleg_cur = rcu_dereference(nfsi->delegation); | |
990 | if (deleg_cur == NULL) | |
991 | goto no_delegation; | |
992 | ||
993 | spin_lock(&deleg_cur->lock); | |
994 | if (nfsi->delegation != deleg_cur || | |
dc0b027d | 995 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
996 | goto no_delegation_unlock; |
997 | ||
998 | if (delegation == NULL) | |
999 | delegation = &deleg_cur->stateid; | |
1000 | else if (memcmp(deleg_cur->stateid.data, delegation->data, NFS4_STATEID_SIZE) != 0) | |
1001 | goto no_delegation_unlock; | |
1002 | ||
b7391f44 | 1003 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 1004 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
1005 | ret = 1; |
1006 | no_delegation_unlock: | |
1007 | spin_unlock(&deleg_cur->lock); | |
1008 | no_delegation: | |
1009 | rcu_read_unlock(); | |
1010 | ||
1011 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 1012 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
1013 | ret = 1; |
1014 | } | |
1015 | ||
1016 | return ret; | |
1017 | } | |
1018 | ||
1019 | ||
dc0b027d | 1020 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1021 | { |
1022 | struct nfs_delegation *delegation; | |
1023 | ||
1024 | rcu_read_lock(); | |
1025 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1026 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1027 | rcu_read_unlock(); |
1028 | return; | |
1029 | } | |
1030 | rcu_read_unlock(); | |
1031 | nfs_inode_return_delegation(inode); | |
1032 | } | |
1033 | ||
6ee41268 | 1034 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1035 | { |
1036 | struct nfs4_state *state = opendata->state; | |
1037 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1038 | struct nfs_delegation *delegation; | |
536e43d1 | 1039 | int open_mode = opendata->o_arg.open_flags & (O_EXCL|O_TRUNC); |
dc0b027d | 1040 | fmode_t fmode = opendata->o_arg.fmode; |
aac00a8d TM |
1041 | nfs4_stateid stateid; |
1042 | int ret = -EAGAIN; | |
1043 | ||
aac00a8d | 1044 | for (;;) { |
dc0b027d | 1045 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 1046 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
1047 | if (can_open_cached(state, fmode, open_mode)) { |
1048 | update_open_stateflags(state, fmode); | |
6ee41268 | 1049 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
1050 | goto out_return_state; |
1051 | } | |
1052 | spin_unlock(&state->owner->so_lock); | |
1053 | } | |
34310430 TM |
1054 | rcu_read_lock(); |
1055 | delegation = rcu_dereference(nfsi->delegation); | |
652f89f6 | 1056 | if (!can_open_delegated(delegation, fmode)) { |
34310430 | 1057 | rcu_read_unlock(); |
aac00a8d | 1058 | break; |
34310430 | 1059 | } |
aac00a8d TM |
1060 | /* Save the delegation */ |
1061 | memcpy(stateid.data, delegation->stateid.data, sizeof(stateid.data)); | |
1062 | rcu_read_unlock(); | |
af22f94a | 1063 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
1064 | if (ret != 0) |
1065 | goto out; | |
1066 | ret = -EAGAIN; | |
34310430 TM |
1067 | |
1068 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1069 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1070 | goto out_return_state; |
aac00a8d | 1071 | } |
aac00a8d TM |
1072 | out: |
1073 | return ERR_PTR(ret); | |
1074 | out_return_state: | |
1075 | atomic_inc(&state->count); | |
1076 | return state; | |
1077 | } | |
1078 | ||
24ac23ab TM |
1079 | static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) |
1080 | { | |
1081 | struct inode *inode; | |
1082 | struct nfs4_state *state = NULL; | |
003707c7 | 1083 | struct nfs_delegation *delegation; |
1b370bc2 | 1084 | int ret; |
24ac23ab | 1085 | |
aac00a8d | 1086 | if (!data->rpc_done) { |
6ee41268 | 1087 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1088 | goto out; |
1089 | } | |
1090 | ||
1b370bc2 | 1091 | ret = -EAGAIN; |
24ac23ab | 1092 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1093 | goto err; |
24ac23ab | 1094 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 1095 | ret = PTR_ERR(inode); |
03f28e3a | 1096 | if (IS_ERR(inode)) |
1b370bc2 TM |
1097 | goto err; |
1098 | ret = -ENOMEM; | |
24ac23ab TM |
1099 | state = nfs4_get_open_state(inode, data->owner); |
1100 | if (state == NULL) | |
1b370bc2 | 1101 | goto err_put_inode; |
549d6ed5 | 1102 | if (data->o_res.delegation_type != 0) { |
4e0038b6 | 1103 | struct nfs_client *clp = NFS_SERVER(inode)->nfs_client; |
549d6ed5 TM |
1104 | int delegation_flags = 0; |
1105 | ||
003707c7 TM |
1106 | rcu_read_lock(); |
1107 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
1108 | if (delegation) | |
1109 | delegation_flags = delegation->flags; | |
1110 | rcu_read_unlock(); | |
652f89f6 TM |
1111 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) { |
1112 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " | |
1113 | "returning a delegation for " | |
1114 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
4e0038b6 | 1115 | clp->cl_hostname); |
652f89f6 | 1116 | } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) |
549d6ed5 TM |
1117 | nfs_inode_set_delegation(state->inode, |
1118 | data->owner->so_cred, | |
1119 | &data->o_res); | |
1120 | else | |
1121 | nfs_inode_reclaim_delegation(state->inode, | |
1122 | data->owner->so_cred, | |
1123 | &data->o_res); | |
1124 | } | |
34310430 TM |
1125 | |
1126 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
dc0b027d | 1127 | data->o_arg.fmode); |
24ac23ab | 1128 | iput(inode); |
aac00a8d | 1129 | out: |
24ac23ab | 1130 | return state; |
1b370bc2 TM |
1131 | err_put_inode: |
1132 | iput(inode); | |
1133 | err: | |
1134 | return ERR_PTR(ret); | |
24ac23ab TM |
1135 | } |
1136 | ||
864472e9 TM |
1137 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1138 | { | |
1139 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1140 | struct nfs_open_context *ctx; | |
1141 | ||
1142 | spin_lock(&state->inode->i_lock); | |
1143 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1144 | if (ctx->state != state) | |
1145 | continue; | |
1146 | get_nfs_open_context(ctx); | |
1147 | spin_unlock(&state->inode->i_lock); | |
1148 | return ctx; | |
1149 | } | |
1150 | spin_unlock(&state->inode->i_lock); | |
1151 | return ERR_PTR(-ENOENT); | |
1152 | } | |
1153 | ||
6f220ed5 TM |
1154 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
1155 | { | |
1156 | struct nfs4_opendata *opendata; | |
1157 | ||
3d4ff43d | 1158 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, NULL, GFP_NOFS); |
6f220ed5 TM |
1159 | if (opendata == NULL) |
1160 | return ERR_PTR(-ENOMEM); | |
1161 | opendata->state = state; | |
1162 | atomic_inc(&state->count); | |
1163 | return opendata; | |
1164 | } | |
1165 | ||
dc0b027d | 1166 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1167 | { |
2ced46c2 | 1168 | struct nfs4_state *newstate; |
864472e9 TM |
1169 | int ret; |
1170 | ||
dc0b027d TM |
1171 | opendata->o_arg.open_flags = 0; |
1172 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1173 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1174 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1175 | nfs4_init_opendata_res(opendata); | |
b257957e | 1176 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1177 | if (ret != 0) |
1178 | return ret; | |
2ced46c2 | 1179 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1180 | if (IS_ERR(newstate)) |
1181 | return PTR_ERR(newstate); | |
643168c2 | 1182 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1183 | *res = newstate; |
864472e9 TM |
1184 | return 0; |
1185 | } | |
1186 | ||
1187 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1188 | { | |
864472e9 | 1189 | struct nfs4_state *newstate; |
864472e9 TM |
1190 | int ret; |
1191 | ||
1192 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1193 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
1194 | smp_rmb(); |
1195 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1196 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1197 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1198 | if (ret != 0) |
1199 | return ret; | |
2ced46c2 TM |
1200 | if (newstate != state) |
1201 | return -ESTALE; | |
864472e9 TM |
1202 | } |
1203 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1204 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1205 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1206 | if (ret != 0) |
1207 | return ret; | |
2ced46c2 TM |
1208 | if (newstate != state) |
1209 | return -ESTALE; | |
864472e9 TM |
1210 | } |
1211 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1212 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1213 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1214 | if (ret != 0) |
1215 | return ret; | |
2ced46c2 TM |
1216 | if (newstate != state) |
1217 | return -ESTALE; | |
864472e9 | 1218 | } |
1ac7e2fd TM |
1219 | /* |
1220 | * We may have performed cached opens for all three recoveries. | |
1221 | * Check if we need to update the current stateid. | |
1222 | */ | |
1223 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
1224 | memcmp(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)) != 0) { | |
8bda4e4c | 1225 | write_seqlock(&state->seqlock); |
1ac7e2fd TM |
1226 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
1227 | memcpy(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)); | |
8bda4e4c | 1228 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1229 | } |
864472e9 TM |
1230 | return 0; |
1231 | } | |
1232 | ||
1da177e4 LT |
1233 | /* |
1234 | * OPEN_RECLAIM: | |
1235 | * reclaim state on the server after a reboot. | |
1da177e4 | 1236 | */ |
539cd03a | 1237 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1238 | { |
1ac7e2fd | 1239 | struct nfs_delegation *delegation; |
864472e9 | 1240 | struct nfs4_opendata *opendata; |
dc0b027d | 1241 | fmode_t delegation_type = 0; |
1da177e4 LT |
1242 | int status; |
1243 | ||
6f220ed5 TM |
1244 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1245 | if (IS_ERR(opendata)) | |
1246 | return PTR_ERR(opendata); | |
864472e9 TM |
1247 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
1248 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
1249 | rcu_read_lock(); |
1250 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1251 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1252 | delegation_type = delegation->type; |
1ac7e2fd | 1253 | rcu_read_unlock(); |
864472e9 TM |
1254 | opendata->o_arg.u.delegation_type = delegation_type; |
1255 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1256 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1257 | return status; |
1258 | } | |
1259 | ||
539cd03a | 1260 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1261 | { |
1262 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1263 | struct nfs4_exception exception = { }; | |
1264 | int err; | |
1265 | do { | |
539cd03a | 1266 | err = _nfs4_do_open_reclaim(ctx, state); |
168667c4 | 1267 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1268 | break; |
1269 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1270 | } while (exception.retry); |
1271 | return err; | |
1272 | } | |
1273 | ||
864472e9 TM |
1274 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1275 | { | |
1276 | struct nfs_open_context *ctx; | |
1277 | int ret; | |
1278 | ||
1279 | ctx = nfs4_state_find_open_context(state); | |
1280 | if (IS_ERR(ctx)) | |
1281 | return PTR_ERR(ctx); | |
539cd03a | 1282 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1283 | put_nfs_open_context(ctx); |
1284 | return ret; | |
1285 | } | |
1286 | ||
13437e12 | 1287 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 1288 | { |
e56e0b78 | 1289 | struct nfs4_opendata *opendata; |
864472e9 | 1290 | int ret; |
1da177e4 | 1291 | |
6f220ed5 TM |
1292 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1293 | if (IS_ERR(opendata)) | |
1294 | return PTR_ERR(opendata); | |
e56e0b78 | 1295 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
13437e12 | 1296 | memcpy(opendata->o_arg.u.delegation.data, stateid->data, |
e56e0b78 | 1297 | sizeof(opendata->o_arg.u.delegation.data)); |
864472e9 | 1298 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 1299 | nfs4_opendata_put(opendata); |
864472e9 | 1300 | return ret; |
1da177e4 LT |
1301 | } |
1302 | ||
13437e12 | 1303 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
1304 | { |
1305 | struct nfs4_exception exception = { }; | |
539cd03a | 1306 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
1307 | int err; |
1308 | do { | |
13437e12 | 1309 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
1310 | switch (err) { |
1311 | case 0: | |
965b5d67 TM |
1312 | case -ENOENT: |
1313 | case -ESTALE: | |
1314 | goto out; | |
bcfa49f6 RL |
1315 | case -NFS4ERR_BADSESSION: |
1316 | case -NFS4ERR_BADSLOT: | |
1317 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1318 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1319 | case -NFS4ERR_DEADSESSION: | |
0400a6b0 | 1320 | nfs4_schedule_session_recovery(server->nfs_client->cl_session); |
bcfa49f6 | 1321 | goto out; |
1da177e4 LT |
1322 | case -NFS4ERR_STALE_CLIENTID: |
1323 | case -NFS4ERR_STALE_STATEID: | |
1324 | case -NFS4ERR_EXPIRED: | |
1325 | /* Don't recall a delegation if it was lost */ | |
0400a6b0 | 1326 | nfs4_schedule_lease_recovery(server->nfs_client); |
965b5d67 TM |
1327 | goto out; |
1328 | case -ERESTARTSYS: | |
1329 | /* | |
1330 | * The show must go on: exit, but mark the | |
1331 | * stateid as needing recovery. | |
1332 | */ | |
1333 | case -NFS4ERR_ADMIN_REVOKED: | |
1334 | case -NFS4ERR_BAD_STATEID: | |
0400a6b0 | 1335 | nfs4_schedule_stateid_recovery(server, state); |
168667c4 TM |
1336 | case -EKEYEXPIRED: |
1337 | /* | |
1338 | * User RPCSEC_GSS context has expired. | |
1339 | * We cannot recover this stateid now, so | |
1340 | * skip it and allow recovery thread to | |
1341 | * proceed. | |
1342 | */ | |
965b5d67 TM |
1343 | case -ENOMEM: |
1344 | err = 0; | |
1345 | goto out; | |
1da177e4 LT |
1346 | } |
1347 | err = nfs4_handle_exception(server, err, &exception); | |
1348 | } while (exception.retry); | |
965b5d67 | 1349 | out: |
1da177e4 LT |
1350 | return err; |
1351 | } | |
1352 | ||
cdd4e68b TM |
1353 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1354 | { | |
1355 | struct nfs4_opendata *data = calldata; | |
1356 | ||
1357 | data->rpc_status = task->tk_status; | |
26e976a8 | 1358 | if (data->rpc_status == 0) { |
cdd4e68b TM |
1359 | memcpy(data->o_res.stateid.data, data->c_res.stateid.data, |
1360 | sizeof(data->o_res.stateid.data)); | |
bb22629e | 1361 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1362 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1363 | data->rpc_done = 1; |
26e976a8 | 1364 | } |
cdd4e68b TM |
1365 | } |
1366 | ||
1367 | static void nfs4_open_confirm_release(void *calldata) | |
1368 | { | |
1369 | struct nfs4_opendata *data = calldata; | |
1370 | struct nfs4_state *state = NULL; | |
1371 | ||
1372 | /* If this request hasn't been cancelled, do nothing */ | |
1373 | if (data->cancelled == 0) | |
1374 | goto out_free; | |
1375 | /* In case of error, no cleanup! */ | |
3e309914 | 1376 | if (!data->rpc_done) |
cdd4e68b | 1377 | goto out_free; |
cdd4e68b | 1378 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1379 | if (!IS_ERR(state)) |
643168c2 | 1380 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1381 | out_free: |
c6d00e63 | 1382 | nfs4_opendata_put(data); |
cdd4e68b TM |
1383 | } |
1384 | ||
1385 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1386 | .rpc_call_done = nfs4_open_confirm_done, |
1387 | .rpc_release = nfs4_open_confirm_release, | |
1388 | }; | |
1389 | ||
1390 | /* | |
1391 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1392 | */ | |
1393 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1394 | { | |
1395 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1396 | struct rpc_task *task; | |
5138fde0 TM |
1397 | struct rpc_message msg = { |
1398 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1399 | .rpc_argp = &data->c_arg, | |
1400 | .rpc_resp = &data->c_res, | |
1401 | .rpc_cred = data->owner->so_cred, | |
1402 | }; | |
c970aa85 TM |
1403 | struct rpc_task_setup task_setup_data = { |
1404 | .rpc_client = server->client, | |
5138fde0 | 1405 | .rpc_message = &msg, |
c970aa85 TM |
1406 | .callback_ops = &nfs4_open_confirm_ops, |
1407 | .callback_data = data, | |
101070ca | 1408 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1409 | .flags = RPC_TASK_ASYNC, |
1410 | }; | |
1da177e4 LT |
1411 | int status; |
1412 | ||
c6d00e63 | 1413 | kref_get(&data->kref); |
3e309914 TM |
1414 | data->rpc_done = 0; |
1415 | data->rpc_status = 0; | |
5138fde0 | 1416 | data->timestamp = jiffies; |
c970aa85 | 1417 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1418 | if (IS_ERR(task)) |
cdd4e68b | 1419 | return PTR_ERR(task); |
cdd4e68b TM |
1420 | status = nfs4_wait_for_completion_rpc_task(task); |
1421 | if (status != 0) { | |
1422 | data->cancelled = 1; | |
1423 | smp_wmb(); | |
1424 | } else | |
1425 | status = data->rpc_status; | |
e6b3c4db | 1426 | rpc_put_task(task); |
1da177e4 LT |
1427 | return status; |
1428 | } | |
1429 | ||
24ac23ab | 1430 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1431 | { |
24ac23ab TM |
1432 | struct nfs4_opendata *data = calldata; |
1433 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 1434 | |
24ac23ab TM |
1435 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
1436 | return; | |
aac00a8d TM |
1437 | /* |
1438 | * Check if we still need to send an OPEN call, or if we can use | |
1439 | * a delegation instead. | |
1440 | */ | |
1441 | if (data->state != NULL) { | |
1442 | struct nfs_delegation *delegation; | |
1443 | ||
dc0b027d | 1444 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1445 | goto out_no_action; |
aac00a8d TM |
1446 | rcu_read_lock(); |
1447 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
652f89f6 TM |
1448 | if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR && |
1449 | can_open_delegated(delegation, data->o_arg.fmode)) | |
1450 | goto unlock_no_action; | |
aac00a8d TM |
1451 | rcu_read_unlock(); |
1452 | } | |
24ac23ab | 1453 | /* Update sequence id. */ |
48c22eb2 | 1454 | data->o_arg.id = sp->so_seqid.owner_id; |
1f0e890d | 1455 | data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; |
6f220ed5 | 1456 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 1457 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
6f220ed5 TM |
1458 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1459 | } | |
26e976a8 | 1460 | data->timestamp = jiffies; |
035168ab | 1461 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 1462 | &data->o_arg.seq_args, |
9d12b216 | 1463 | &data->o_res.seq_res, task)) |
d898528c | 1464 | return; |
5138fde0 | 1465 | rpc_call_start(task); |
6ee41268 | 1466 | return; |
652f89f6 TM |
1467 | unlock_no_action: |
1468 | rcu_read_unlock(); | |
6ee41268 TM |
1469 | out_no_action: |
1470 | task->tk_action = NULL; | |
1471 | ||
24ac23ab | 1472 | } |
1da177e4 | 1473 | |
b257957e AB |
1474 | static void nfs4_recover_open_prepare(struct rpc_task *task, void *calldata) |
1475 | { | |
1476 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
1477 | nfs4_open_prepare(task, calldata); | |
1478 | } | |
1479 | ||
24ac23ab TM |
1480 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1481 | { | |
1482 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1483 | |
24ac23ab | 1484 | data->rpc_status = task->tk_status; |
d898528c | 1485 | |
14516c3a TM |
1486 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1487 | return; | |
d898528c | 1488 | |
24ac23ab TM |
1489 | if (task->tk_status == 0) { |
1490 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1491 | case S_IFREG: |
1492 | break; | |
1493 | case S_IFLNK: | |
24ac23ab | 1494 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1495 | break; |
1496 | case S_IFDIR: | |
24ac23ab | 1497 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1498 | break; |
1499 | default: | |
24ac23ab | 1500 | data->rpc_status = -ENOTDIR; |
6f926b5b | 1501 | } |
26e976a8 | 1502 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1503 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1504 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1505 | } |
3e309914 | 1506 | data->rpc_done = 1; |
24ac23ab | 1507 | } |
6f926b5b | 1508 | |
24ac23ab TM |
1509 | static void nfs4_open_release(void *calldata) |
1510 | { | |
1511 | struct nfs4_opendata *data = calldata; | |
1512 | struct nfs4_state *state = NULL; | |
1513 | ||
1514 | /* If this request hasn't been cancelled, do nothing */ | |
1515 | if (data->cancelled == 0) | |
1516 | goto out_free; | |
1517 | /* In case of error, no cleanup! */ | |
3e309914 | 1518 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1519 | goto out_free; |
1520 | /* In case we need an open_confirm, no cleanup! */ | |
1521 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1522 | goto out_free; | |
24ac23ab | 1523 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1524 | if (!IS_ERR(state)) |
643168c2 | 1525 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1526 | out_free: |
c6d00e63 | 1527 | nfs4_opendata_put(data); |
24ac23ab TM |
1528 | } |
1529 | ||
1530 | static const struct rpc_call_ops nfs4_open_ops = { | |
1531 | .rpc_call_prepare = nfs4_open_prepare, | |
1532 | .rpc_call_done = nfs4_open_done, | |
1533 | .rpc_release = nfs4_open_release, | |
1534 | }; | |
1535 | ||
b257957e AB |
1536 | static const struct rpc_call_ops nfs4_recover_open_ops = { |
1537 | .rpc_call_prepare = nfs4_recover_open_prepare, | |
1538 | .rpc_call_done = nfs4_open_done, | |
1539 | .rpc_release = nfs4_open_release, | |
1540 | }; | |
1541 | ||
1542 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) | |
24ac23ab TM |
1543 | { |
1544 | struct inode *dir = data->dir->d_inode; | |
1545 | struct nfs_server *server = NFS_SERVER(dir); | |
1546 | struct nfs_openargs *o_arg = &data->o_arg; | |
1547 | struct nfs_openres *o_res = &data->o_res; | |
1548 | struct rpc_task *task; | |
5138fde0 TM |
1549 | struct rpc_message msg = { |
1550 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1551 | .rpc_argp = o_arg, | |
1552 | .rpc_resp = o_res, | |
1553 | .rpc_cred = data->owner->so_cred, | |
1554 | }; | |
c970aa85 TM |
1555 | struct rpc_task_setup task_setup_data = { |
1556 | .rpc_client = server->client, | |
5138fde0 | 1557 | .rpc_message = &msg, |
c970aa85 TM |
1558 | .callback_ops = &nfs4_open_ops, |
1559 | .callback_data = data, | |
101070ca | 1560 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1561 | .flags = RPC_TASK_ASYNC, |
1562 | }; | |
24ac23ab TM |
1563 | int status; |
1564 | ||
9d12b216 | 1565 | nfs41_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 1566 | kref_get(&data->kref); |
3e309914 TM |
1567 | data->rpc_done = 0; |
1568 | data->rpc_status = 0; | |
2ced46c2 | 1569 | data->cancelled = 0; |
b257957e AB |
1570 | if (isrecover) |
1571 | task_setup_data.callback_ops = &nfs4_recover_open_ops; | |
c970aa85 | 1572 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1573 | if (IS_ERR(task)) |
1574 | return PTR_ERR(task); | |
1575 | status = nfs4_wait_for_completion_rpc_task(task); | |
1576 | if (status != 0) { | |
1577 | data->cancelled = 1; | |
1578 | smp_wmb(); | |
1579 | } else | |
1580 | status = data->rpc_status; | |
1581 | rpc_put_task(task); | |
1582 | ||
1583 | return status; | |
1584 | } | |
1585 | ||
1586 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1587 | { | |
1588 | struct inode *dir = data->dir->d_inode; | |
1589 | struct nfs_openres *o_res = &data->o_res; | |
1590 | int status; | |
1591 | ||
1592 | status = nfs4_run_open_task(data, 1); | |
1593 | if (status != 0 || !data->rpc_done) | |
1594 | return status; | |
1595 | ||
6926afd1 TM |
1596 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
1597 | ||
b257957e AB |
1598 | nfs_refresh_inode(dir, o_res->dir_attr); |
1599 | ||
1600 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { | |
1601 | status = _nfs4_proc_open_confirm(data); | |
1602 | if (status != 0) | |
1603 | return status; | |
1604 | } | |
1605 | ||
1606 | return status; | |
1607 | } | |
1608 | ||
1609 | /* | |
1610 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1611 | */ | |
1612 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1613 | { | |
1614 | struct inode *dir = data->dir->d_inode; | |
1615 | struct nfs_server *server = NFS_SERVER(dir); | |
1616 | struct nfs_openargs *o_arg = &data->o_arg; | |
1617 | struct nfs_openres *o_res = &data->o_res; | |
1618 | int status; | |
1619 | ||
1620 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
1621 | if (!data->rpc_done) |
1622 | return status; | |
1623 | if (status != 0) { | |
1624 | if (status == -NFS4ERR_BADNAME && | |
1625 | !(o_arg->open_flags & O_CREAT)) | |
1626 | return -ENOENT; | |
24ac23ab | 1627 | return status; |
08ef7bd3 | 1628 | } |
24ac23ab | 1629 | |
6926afd1 TM |
1630 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
1631 | ||
56ae19f3 TM |
1632 | if (o_arg->open_flags & O_CREAT) { |
1633 | update_changeattr(dir, &o_res->cinfo); | |
1634 | nfs_post_op_update_inode(dir, o_res->dir_attr); | |
1635 | } else | |
1636 | nfs_refresh_inode(dir, o_res->dir_attr); | |
0df5dd4a TM |
1637 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1638 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1639 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1640 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1641 | if (status != 0) |
24ac23ab | 1642 | return status; |
1da177e4 LT |
1643 | } |
1644 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1645 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1646 | return 0; |
1da177e4 LT |
1647 | } |
1648 | ||
d83217c1 | 1649 | static int nfs4_client_recover_expired_lease(struct nfs_client *clp) |
58d9714a | 1650 | { |
a78cb57a | 1651 | unsigned int loop; |
6b30954e | 1652 | int ret; |
58d9714a | 1653 | |
a78cb57a | 1654 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { |
65de872e | 1655 | ret = nfs4_wait_clnt_recover(clp); |
6b30954e | 1656 | if (ret != 0) |
a78cb57a | 1657 | break; |
e598d843 TM |
1658 | if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) && |
1659 | !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state)) | |
6b30954e | 1660 | break; |
0400a6b0 | 1661 | nfs4_schedule_state_manager(clp); |
a78cb57a | 1662 | ret = -EIO; |
6b30954e | 1663 | } |
a78cb57a | 1664 | return ret; |
58d9714a TM |
1665 | } |
1666 | ||
d83217c1 AA |
1667 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1668 | { | |
1669 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1670 | } | |
1671 | ||
1da177e4 LT |
1672 | /* |
1673 | * OPEN_EXPIRED: | |
1674 | * reclaim state on the server after a network partition. | |
1675 | * Assumes caller holds the appropriate lock | |
1676 | */ | |
539cd03a | 1677 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1678 | { |
e56e0b78 | 1679 | struct nfs4_opendata *opendata; |
864472e9 | 1680 | int ret; |
1da177e4 | 1681 | |
6f220ed5 TM |
1682 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1683 | if (IS_ERR(opendata)) | |
1684 | return PTR_ERR(opendata); | |
864472e9 | 1685 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1686 | if (ret == -ESTALE) |
3d4ff43d | 1687 | d_drop(ctx->dentry); |
c6d00e63 | 1688 | nfs4_opendata_put(opendata); |
864472e9 | 1689 | return ret; |
1da177e4 LT |
1690 | } |
1691 | ||
a9ed2e25 | 1692 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1693 | { |
539cd03a | 1694 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1695 | struct nfs4_exception exception = { }; |
1696 | int err; | |
1697 | ||
1698 | do { | |
539cd03a | 1699 | err = _nfs4_open_expired(ctx, state); |
a9ed2e25 TM |
1700 | switch (err) { |
1701 | default: | |
1702 | goto out; | |
1703 | case -NFS4ERR_GRACE: | |
1704 | case -NFS4ERR_DELAY: | |
1705 | nfs4_handle_exception(server, err, &exception); | |
1706 | err = 0; | |
1707 | } | |
202b50dc | 1708 | } while (exception.retry); |
a9ed2e25 | 1709 | out: |
202b50dc TM |
1710 | return err; |
1711 | } | |
1712 | ||
1da177e4 LT |
1713 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1714 | { | |
1da177e4 | 1715 | struct nfs_open_context *ctx; |
864472e9 | 1716 | int ret; |
1da177e4 | 1717 | |
864472e9 TM |
1718 | ctx = nfs4_state_find_open_context(state); |
1719 | if (IS_ERR(ctx)) | |
1720 | return PTR_ERR(ctx); | |
539cd03a | 1721 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1722 | put_nfs_open_context(ctx); |
1723 | return ret; | |
1da177e4 LT |
1724 | } |
1725 | ||
f062eb6c | 1726 | #if defined(CONFIG_NFS_V4_1) |
b01dd1d8 | 1727 | static int nfs41_check_expired_stateid(struct nfs4_state *state, nfs4_stateid *stateid, unsigned int flags) |
f062eb6c | 1728 | { |
b01dd1d8 | 1729 | int status = NFS_OK; |
f062eb6c BS |
1730 | struct nfs_server *server = NFS_SERVER(state->inode); |
1731 | ||
b01dd1d8 BS |
1732 | if (state->flags & flags) { |
1733 | status = nfs41_test_stateid(server, stateid); | |
1734 | if (status != NFS_OK) { | |
1735 | nfs41_free_stateid(server, stateid); | |
1736 | state->flags &= ~flags; | |
1737 | } | |
1738 | } | |
1739 | return status; | |
1740 | } | |
1741 | ||
1742 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
1743 | { | |
1744 | int deleg_status, open_status; | |
1745 | int deleg_flags = 1 << NFS_DELEGATED_STATE; | |
1746 | int open_flags = (1 << NFS_O_RDONLY_STATE) | (1 << NFS_O_WRONLY_STATE) | (1 << NFS_O_RDWR_STATE); | |
1747 | ||
1748 | deleg_status = nfs41_check_expired_stateid(state, &state->stateid, deleg_flags); | |
1749 | open_status = nfs41_check_expired_stateid(state, &state->open_stateid, open_flags); | |
1750 | ||
1751 | if ((deleg_status == NFS_OK) && (open_status == NFS_OK)) | |
1752 | return NFS_OK; | |
f062eb6c BS |
1753 | return nfs4_open_expired(sp, state); |
1754 | } | |
1755 | #endif | |
1756 | ||
aa53ed54 JL |
1757 | /* |
1758 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1759 | * fields corresponding to attributes that were used to store the verifier. | |
1760 | * Make sure we clobber those fields in the later setattr call | |
1761 | */ | |
1762 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1763 | { | |
1764 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1765 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1766 | sattr->ia_valid |= ATTR_ATIME; | |
1767 | ||
1768 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1769 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1770 | sattr->ia_valid |= ATTR_MTIME; | |
1771 | } | |
1772 | ||
1da177e4 | 1773 | /* |
24ac23ab | 1774 | * Returns a referenced nfs4_state |
1da177e4 | 1775 | */ |
82a2c1b7 | 1776 | 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 |
1777 | { |
1778 | struct nfs4_state_owner *sp; | |
1779 | struct nfs4_state *state = NULL; | |
1780 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1781 | struct nfs4_opendata *opendata; |
aac00a8d | 1782 | int status; |
1da177e4 LT |
1783 | |
1784 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 1785 | status = -ENOMEM; |
d1e284d5 TM |
1786 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
1787 | if (sp == NULL) { | |
1da177e4 LT |
1788 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
1789 | goto out_err; | |
1790 | } | |
58d9714a TM |
1791 | status = nfs4_recover_expired_lease(server); |
1792 | if (status != 0) | |
b4454fe1 | 1793 | goto err_put_state_owner; |
82a2c1b7 AV |
1794 | if (dentry->d_inode != NULL) |
1795 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 1796 | status = -ENOMEM; |
82a2c1b7 | 1797 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, GFP_KERNEL); |
e56e0b78 | 1798 | if (opendata == NULL) |
95d35cb4 | 1799 | goto err_put_state_owner; |
1da177e4 | 1800 | |
82a2c1b7 AV |
1801 | if (dentry->d_inode != NULL) |
1802 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 1803 | |
24ac23ab | 1804 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1805 | if (status != 0) |
c6d00e63 | 1806 | goto err_opendata_put; |
1da177e4 | 1807 | |
24ac23ab | 1808 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1809 | status = PTR_ERR(state); |
1810 | if (IS_ERR(state)) | |
c6d00e63 | 1811 | goto err_opendata_put; |
0df5dd4a | 1812 | if (server->caps & NFS_CAP_POSIX_LOCK) |
8e469ebd | 1813 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); |
0ab64e0e TM |
1814 | |
1815 | if (opendata->o_arg.open_flags & O_EXCL) { | |
1816 | nfs4_exclusive_attrset(opendata, sattr); | |
1817 | ||
1818 | nfs_fattr_init(opendata->o_res.f_attr); | |
1819 | status = nfs4_do_setattr(state->inode, cred, | |
1820 | opendata->o_res.f_attr, sattr, | |
1821 | state); | |
1822 | if (status == 0) | |
1823 | nfs_setattr_update_inode(state->inode, sattr); | |
1824 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
1825 | } | |
c6d00e63 | 1826 | nfs4_opendata_put(opendata); |
1da177e4 | 1827 | nfs4_put_state_owner(sp); |
1da177e4 LT |
1828 | *res = state; |
1829 | return 0; | |
c6d00e63 TM |
1830 | err_opendata_put: |
1831 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
1832 | err_put_state_owner: |
1833 | nfs4_put_state_owner(sp); | |
1da177e4 | 1834 | out_err: |
1da177e4 LT |
1835 | *res = NULL; |
1836 | return status; | |
1837 | } | |
1838 | ||
1839 | ||
82a2c1b7 | 1840 | 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 |
1841 | { |
1842 | struct nfs4_exception exception = { }; | |
1843 | struct nfs4_state *res; | |
1844 | int status; | |
1845 | ||
1846 | do { | |
82a2c1b7 | 1847 | status = _nfs4_do_open(dir, dentry, fmode, flags, sattr, cred, &res); |
1da177e4 LT |
1848 | if (status == 0) |
1849 | break; | |
1850 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1851 | * book-keeping w.r.t. state-changing operations | |
1852 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1853 | * It is actually a sign of a bug on the client or on the server. | |
1854 | * | |
1855 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1856 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1857 | * have unhashed the old state_owner for us, and that we can |
1858 | * therefore safely retry using a new one. We should still warn | |
1859 | * the user though... | |
1860 | */ | |
1861 | if (status == -NFS4ERR_BAD_SEQID) { | |
6f43ddcc TM |
1862 | printk(KERN_WARNING "NFS: v4 server %s " |
1863 | " returned a bad sequence-id error!\n", | |
1864 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1865 | exception.retry = 1; |
1866 | continue; | |
1867 | } | |
550f5747 TM |
1868 | /* |
1869 | * BAD_STATEID on OPEN means that the server cancelled our | |
1870 | * state before it received the OPEN_CONFIRM. | |
1871 | * Recover by retrying the request as per the discussion | |
1872 | * on Page 181 of RFC3530. | |
1873 | */ | |
1874 | if (status == -NFS4ERR_BAD_STATEID) { | |
1875 | exception.retry = 1; | |
1876 | continue; | |
1877 | } | |
aac00a8d TM |
1878 | if (status == -EAGAIN) { |
1879 | /* We must have found a delegation */ | |
1880 | exception.retry = 1; | |
1881 | continue; | |
1882 | } | |
1da177e4 LT |
1883 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1884 | status, &exception)); | |
1885 | } while (exception.retry); | |
1886 | return res; | |
1887 | } | |
1888 | ||
659bfcd6 TM |
1889 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1890 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1891 | struct nfs4_state *state) | |
1da177e4 | 1892 | { |
3e4f6290 | 1893 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1894 | struct nfs_setattrargs arg = { |
3e4f6290 | 1895 | .fh = NFS_FH(inode), |
1da177e4 LT |
1896 | .iap = sattr, |
1897 | .server = server, | |
1898 | .bitmask = server->attr_bitmask, | |
1899 | }; | |
1900 | struct nfs_setattrres res = { | |
1901 | .fattr = fattr, | |
1902 | .server = server, | |
1903 | }; | |
1904 | struct rpc_message msg = { | |
659bfcd6 TM |
1905 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
1906 | .rpc_argp = &arg, | |
1907 | .rpc_resp = &res, | |
1908 | .rpc_cred = cred, | |
1da177e4 | 1909 | }; |
26e976a8 | 1910 | unsigned long timestamp = jiffies; |
65e4308d | 1911 | int status; |
1da177e4 | 1912 | |
0e574af1 | 1913 | nfs_fattr_init(fattr); |
1da177e4 | 1914 | |
3e4f6290 TM |
1915 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) { |
1916 | /* Use that stateid */ | |
1917 | } else if (state != NULL) { | |
77041ed9 | 1918 | nfs4_copy_stateid(&arg.stateid, state, current->files, current->tgid); |
08e9eac4 | 1919 | } else |
1da177e4 LT |
1920 | memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid)); |
1921 | ||
7c513058 | 1922 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
1923 | if (status == 0 && state != NULL) |
1924 | renew_lease(server, timestamp); | |
65e4308d | 1925 | return status; |
1da177e4 LT |
1926 | } |
1927 | ||
659bfcd6 TM |
1928 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1929 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1930 | struct nfs4_state *state) | |
1da177e4 | 1931 | { |
3e4f6290 | 1932 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
1933 | struct nfs4_exception exception = { }; |
1934 | int err; | |
1935 | do { | |
1936 | err = nfs4_handle_exception(server, | |
659bfcd6 | 1937 | _nfs4_do_setattr(inode, cred, fattr, sattr, state), |
1da177e4 LT |
1938 | &exception); |
1939 | } while (exception.retry); | |
1940 | return err; | |
1941 | } | |
1942 | ||
1943 | struct nfs4_closedata { | |
1944 | struct inode *inode; | |
1945 | struct nfs4_state *state; | |
1946 | struct nfs_closeargs arg; | |
1947 | struct nfs_closeres res; | |
516a6af6 | 1948 | struct nfs_fattr fattr; |
26e976a8 | 1949 | unsigned long timestamp; |
f7e8917a FI |
1950 | bool roc; |
1951 | u32 roc_barrier; | |
1da177e4 LT |
1952 | }; |
1953 | ||
963d8fe5 | 1954 | static void nfs4_free_closedata(void *data) |
9512135d | 1955 | { |
963d8fe5 TM |
1956 | struct nfs4_closedata *calldata = data; |
1957 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 1958 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 1959 | |
f7e8917a FI |
1960 | if (calldata->roc) |
1961 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
1962 | nfs4_put_open_state(calldata->state); |
1963 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 1964 | nfs4_put_state_owner(sp); |
643168c2 | 1965 | nfs_sb_deactive(sb); |
9512135d TM |
1966 | kfree(calldata); |
1967 | } | |
1968 | ||
88069f77 TM |
1969 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
1970 | fmode_t fmode) | |
1971 | { | |
1972 | spin_lock(&state->owner->so_lock); | |
1973 | if (!(fmode & FMODE_READ)) | |
1974 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1975 | if (!(fmode & FMODE_WRITE)) | |
1976 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1977 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1978 | spin_unlock(&state->owner->so_lock); | |
1979 | } | |
1980 | ||
963d8fe5 | 1981 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 1982 | { |
963d8fe5 | 1983 | struct nfs4_closedata *calldata = data; |
1da177e4 | 1984 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
1985 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
1986 | ||
a3ca5651 | 1987 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
1988 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
1989 | return; | |
1da177e4 LT |
1990 | /* hmm. we are done with the inode, and in the process of freeing |
1991 | * the state_owner. we keep this around to process errors | |
1992 | */ | |
1da177e4 LT |
1993 | switch (task->tk_status) { |
1994 | case 0: | |
f7e8917a FI |
1995 | if (calldata->roc) |
1996 | pnfs_roc_set_barrier(state->inode, | |
1997 | calldata->roc_barrier); | |
45328c35 | 1998 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 1999 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
2000 | nfs4_close_clear_stateid_flags(state, |
2001 | calldata->arg.fmode); | |
1da177e4 LT |
2002 | break; |
2003 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
2004 | case -NFS4ERR_OLD_STATEID: |
2005 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2006 | case -NFS4ERR_EXPIRED: |
dc0b027d | 2007 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2008 | break; |
1da177e4 | 2009 | default: |
72211dbe TM |
2010 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
2011 | rpc_restart_call_prepare(task); | |
1da177e4 | 2012 | } |
72211dbe | 2013 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2014 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2015 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2016 | } |
2017 | ||
4ce70ada | 2018 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2019 | { |
4ce70ada | 2020 | struct nfs4_closedata *calldata = data; |
9512135d | 2021 | struct nfs4_state *state = calldata->state; |
88069f77 | 2022 | int call_close = 0; |
9512135d | 2023 | |
a3ca5651 | 2024 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2025 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 2026 | return; |
003707c7 | 2027 | |
88069f77 TM |
2028 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
2029 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 2030 | spin_lock(&state->owner->so_lock); |
003707c7 | 2031 | /* Calculate the change in open mode */ |
e7616923 | 2032 | if (state->n_rdwr == 0) { |
003707c7 | 2033 | if (state->n_rdonly == 0) { |
88069f77 TM |
2034 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
2035 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2036 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
2037 | } |
2038 | if (state->n_wronly == 0) { | |
88069f77 TM |
2039 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
2040 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2041 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 2042 | } |
e7616923 | 2043 | } |
4cecb76f | 2044 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2045 | |
2046 | if (!call_close) { | |
963d8fe5 TM |
2047 | /* Note: exit _without_ calling nfs4_close_done */ |
2048 | task->tk_action = NULL; | |
a3ca5651 | 2049 | goto out; |
9512135d | 2050 | } |
88069f77 | 2051 | |
f7e8917a | 2052 | if (calldata->arg.fmode == 0) { |
88069f77 | 2053 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a FI |
2054 | if (calldata->roc && |
2055 | pnfs_roc_drain(calldata->inode, &calldata->roc_barrier)) { | |
2056 | rpc_sleep_on(&NFS_SERVER(calldata->inode)->roc_rpcwaitq, | |
2057 | task, NULL); | |
a3ca5651 | 2058 | goto out; |
f7e8917a FI |
2059 | } |
2060 | } | |
88069f77 | 2061 | |
516a6af6 | 2062 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2063 | calldata->timestamp = jiffies; |
035168ab | 2064 | if (nfs4_setup_sequence(NFS_SERVER(calldata->inode), |
9d12b216 TM |
2065 | &calldata->arg.seq_args, |
2066 | &calldata->res.seq_res, | |
2067 | task)) | |
a3ca5651 | 2068 | goto out; |
5138fde0 | 2069 | rpc_call_start(task); |
a3ca5651 CL |
2070 | out: |
2071 | dprintk("%s: done!\n", __func__); | |
1da177e4 LT |
2072 | } |
2073 | ||
963d8fe5 | 2074 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2075 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2076 | .rpc_call_done = nfs4_close_done, |
2077 | .rpc_release = nfs4_free_closedata, | |
2078 | }; | |
2079 | ||
1da177e4 LT |
2080 | /* |
2081 | * It is possible for data to be read/written from a mem-mapped file | |
2082 | * after the sys_close call (which hits the vfs layer as a flush). | |
2083 | * This means that we can't safely call nfsv4 close on a file until | |
2084 | * the inode is cleared. This in turn means that we are not good | |
2085 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2086 | * share state even when we are done with one of the three share | |
2087 | * stateid's in the inode. | |
2088 | * | |
2089 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2090 | */ | |
643168c2 | 2091 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait, bool roc) |
1da177e4 | 2092 | { |
4a35bd41 | 2093 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2094 | struct nfs4_closedata *calldata; |
b39e625b TM |
2095 | struct nfs4_state_owner *sp = state->owner; |
2096 | struct rpc_task *task; | |
5138fde0 TM |
2097 | struct rpc_message msg = { |
2098 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2099 | .rpc_cred = state->owner->so_cred, | |
2100 | }; | |
c970aa85 TM |
2101 | struct rpc_task_setup task_setup_data = { |
2102 | .rpc_client = server->client, | |
5138fde0 | 2103 | .rpc_message = &msg, |
c970aa85 | 2104 | .callback_ops = &nfs4_close_ops, |
101070ca | 2105 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2106 | .flags = RPC_TASK_ASYNC, |
2107 | }; | |
9512135d | 2108 | int status = -ENOMEM; |
1da177e4 | 2109 | |
8535b2be | 2110 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2111 | if (calldata == NULL) |
9512135d | 2112 | goto out; |
9d12b216 | 2113 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2114 | calldata->inode = state->inode; |
1da177e4 | 2115 | calldata->state = state; |
4a35bd41 | 2116 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2117 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2118 | /* Serialization for the sequence id */ |
8535b2be | 2119 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2120 | if (calldata->arg.seqid == NULL) |
2121 | goto out_free_calldata; | |
dc0b027d | 2122 | calldata->arg.fmode = 0; |
a65318bf | 2123 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2124 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2125 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2126 | calldata->res.server = server; |
f7e8917a | 2127 | calldata->roc = roc; |
643168c2 | 2128 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2129 | |
1174dd1f TM |
2130 | msg.rpc_argp = &calldata->arg; |
2131 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2132 | task_setup_data.callback_data = calldata; |
2133 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2134 | if (IS_ERR(task)) |
2135 | return PTR_ERR(task); | |
a49c3c77 TM |
2136 | status = 0; |
2137 | if (wait) | |
2138 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2139 | rpc_put_task(task); |
a49c3c77 | 2140 | return status; |
9512135d TM |
2141 | out_free_calldata: |
2142 | kfree(calldata); | |
2143 | out: | |
f7e8917a FI |
2144 | if (roc) |
2145 | pnfs_roc_release(state->inode); | |
b39e625b TM |
2146 | nfs4_put_open_state(state); |
2147 | nfs4_put_state_owner(sp); | |
9512135d | 2148 | return status; |
1da177e4 LT |
2149 | } |
2150 | ||
2b484297 | 2151 | static struct inode * |
cd9a1c0e | 2152 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2153 | { |
1da177e4 | 2154 | struct nfs4_state *state; |
1da177e4 | 2155 | |
565277f6 | 2156 | /* Protect against concurrent sillydeletes */ |
3d4ff43d | 2157 | state = nfs4_do_open(dir, ctx->dentry, ctx->mode, open_flags, attr, ctx->cred); |
f46e0bd3 TM |
2158 | if (IS_ERR(state)) |
2159 | return ERR_CAST(state); | |
cd9a1c0e | 2160 | ctx->state = state; |
f46e0bd3 | 2161 | return igrab(state->inode); |
1da177e4 LT |
2162 | } |
2163 | ||
1185a552 | 2164 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2165 | { |
2166 | if (ctx->state == NULL) | |
2167 | return; | |
2168 | if (is_sync) | |
643168c2 | 2169 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2170 | else |
643168c2 | 2171 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2172 | } |
1da177e4 LT |
2173 | |
2174 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2175 | { | |
43652ad5 BH |
2176 | struct nfs4_server_caps_arg args = { |
2177 | .fhandle = fhandle, | |
2178 | }; | |
1da177e4 LT |
2179 | struct nfs4_server_caps_res res = {}; |
2180 | struct rpc_message msg = { | |
2181 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2182 | .rpc_argp = &args, |
1da177e4 LT |
2183 | .rpc_resp = &res, |
2184 | }; | |
2185 | int status; | |
2186 | ||
7c513058 | 2187 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2188 | if (status == 0) { |
2189 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2190 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2191 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2192 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2193 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2194 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2195 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2196 | server->caps |= NFS_CAP_ACLS; | |
2197 | if (res.has_links != 0) | |
2198 | server->caps |= NFS_CAP_HARDLINKS; | |
2199 | if (res.has_symlinks != 0) | |
2200 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2201 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2202 | server->caps |= NFS_CAP_FILEID; | |
2203 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2204 | server->caps |= NFS_CAP_MODE; | |
2205 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2206 | server->caps |= NFS_CAP_NLINK; | |
2207 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2208 | server->caps |= NFS_CAP_OWNER; | |
2209 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2210 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2211 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2212 | server->caps |= NFS_CAP_ATIME; | |
2213 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2214 | server->caps |= NFS_CAP_CTIME; | |
2215 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2216 | server->caps |= NFS_CAP_MTIME; | |
2217 | ||
a65318bf TM |
2218 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2219 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2220 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 LT |
2221 | server->acl_bitmask = res.acl_bitmask; |
2222 | } | |
cccef3b9 | 2223 | |
1da177e4 LT |
2224 | return status; |
2225 | } | |
2226 | ||
55a97593 | 2227 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2228 | { |
2229 | struct nfs4_exception exception = { }; | |
2230 | int err; | |
2231 | do { | |
2232 | err = nfs4_handle_exception(server, | |
2233 | _nfs4_server_capabilities(server, fhandle), | |
2234 | &exception); | |
2235 | } while (exception.retry); | |
2236 | return err; | |
2237 | } | |
2238 | ||
2239 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2240 | struct nfs_fsinfo *info) | |
2241 | { | |
1da177e4 LT |
2242 | struct nfs4_lookup_root_arg args = { |
2243 | .bitmask = nfs4_fattr_bitmap, | |
2244 | }; | |
2245 | struct nfs4_lookup_res res = { | |
2246 | .server = server, | |
0e574af1 | 2247 | .fattr = info->fattr, |
1da177e4 LT |
2248 | .fh = fhandle, |
2249 | }; | |
2250 | struct rpc_message msg = { | |
2251 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2252 | .rpc_argp = &args, | |
2253 | .rpc_resp = &res, | |
2254 | }; | |
008f55d0 | 2255 | |
0e574af1 | 2256 | nfs_fattr_init(info->fattr); |
7c513058 | 2257 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2258 | } |
2259 | ||
2260 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2261 | struct nfs_fsinfo *info) | |
2262 | { | |
2263 | struct nfs4_exception exception = { }; | |
2264 | int err; | |
2265 | do { | |
fb8a5ba8 BS |
2266 | err = _nfs4_lookup_root(server, fhandle, info); |
2267 | switch (err) { | |
2268 | case 0: | |
2269 | case -NFS4ERR_WRONGSEC: | |
2270 | break; | |
2271 | default: | |
2272 | err = nfs4_handle_exception(server, err, &exception); | |
2273 | } | |
1da177e4 LT |
2274 | } while (exception.retry); |
2275 | return err; | |
2276 | } | |
2277 | ||
8f70e95f BS |
2278 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2279 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2280 | { | |
2281 | struct rpc_auth *auth; | |
2282 | int ret; | |
2283 | ||
2284 | auth = rpcauth_create(flavor, server->client); | |
2285 | if (!auth) { | |
2286 | ret = -EIO; | |
2287 | goto out; | |
2288 | } | |
2289 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2290 | out: |
2291 | return ret; | |
2292 | } | |
2293 | ||
801a16dc | 2294 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2295 | struct nfs_fsinfo *info) |
1da177e4 | 2296 | { |
8f70e95f | 2297 | int i, len, status = 0; |
0fabee24 | 2298 | rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS]; |
1da177e4 | 2299 | |
801a16dc BS |
2300 | len = gss_mech_list_pseudoflavors(&flav_array[0]); |
2301 | flav_array[len] = RPC_AUTH_NULL; | |
2302 | len += 1; | |
8f70e95f BS |
2303 | |
2304 | for (i = 0; i < len; i++) { | |
2305 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); | |
fb8a5ba8 | 2306 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2307 | continue; |
2308 | break; | |
8f70e95f | 2309 | } |
fb8a5ba8 BS |
2310 | /* |
2311 | * -EACCESS could mean that the user doesn't have correct permissions | |
2312 | * to access the mount. It could also mean that we tried to mount | |
2313 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2314 | * existing mount programs don't handle -EACCES very well so it should | |
2315 | * be mapped to -EPERM instead. | |
2316 | */ | |
2317 | if (status == -EACCES) | |
2318 | status = -EPERM; | |
801a16dc BS |
2319 | return status; |
2320 | } | |
2321 | ||
2322 | /* | |
2323 | * get the file handle for the "/" directory on the server | |
2324 | */ | |
2325 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2326 | struct nfs_fsinfo *info) | |
2327 | { | |
fca78d6d | 2328 | int minor_version = server->nfs_client->cl_minorversion; |
801a16dc | 2329 | int status = nfs4_lookup_root(server, fhandle, info); |
fb8a5ba8 BS |
2330 | if ((status == -NFS4ERR_WRONGSEC) && !(server->flags & NFS_MOUNT_SECFLAVOUR)) |
2331 | /* | |
2332 | * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM | |
2333 | * by nfs4_map_errors() as this function exits. | |
2334 | */ | |
fca78d6d | 2335 | status = nfs_v4_minor_ops[minor_version]->find_root_sec(server, fhandle, info); |
1da177e4 LT |
2336 | if (status == 0) |
2337 | status = nfs4_server_capabilities(server, fhandle); | |
2338 | if (status == 0) | |
2339 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2340 | return nfs4_map_errors(status); |
1da177e4 LT |
2341 | } |
2342 | ||
533eb461 | 2343 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); |
6b97fd3d MN |
2344 | /* |
2345 | * Get locations and (maybe) other attributes of a referral. | |
2346 | * Note that we'll actually follow the referral later when | |
2347 | * we detect fsid mismatch in inode revalidation | |
2348 | */ | |
533eb461 AA |
2349 | static int nfs4_get_referral(struct inode *dir, const struct qstr *name, |
2350 | struct nfs_fattr *fattr, struct nfs_fh *fhandle) | |
6b97fd3d MN |
2351 | { |
2352 | int status = -ENOMEM; | |
2353 | struct page *page = NULL; | |
2354 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2355 | |
2356 | page = alloc_page(GFP_KERNEL); | |
2357 | if (page == NULL) | |
2358 | goto out; | |
2359 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2360 | if (locations == NULL) | |
2361 | goto out; | |
2362 | ||
c228fd3a | 2363 | status = nfs4_proc_fs_locations(dir, name, locations, page); |
6b97fd3d MN |
2364 | if (status != 0) |
2365 | goto out; | |
2366 | /* Make sure server returned a different fsid for the referral */ | |
2367 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2368 | dprintk("%s: server did not return a different fsid for" |
2369 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2370 | status = -EIO; |
2371 | goto out; | |
2372 | } | |
533eb461 AA |
2373 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2374 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2375 | |
533eb461 | 2376 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2377 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2378 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2379 | out: | |
2380 | if (page) | |
2381 | __free_page(page); | |
5d7ca35a | 2382 | kfree(locations); |
6b97fd3d MN |
2383 | return status; |
2384 | } | |
2385 | ||
1da177e4 LT |
2386 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2387 | { | |
2388 | struct nfs4_getattr_arg args = { | |
2389 | .fh = fhandle, | |
2390 | .bitmask = server->attr_bitmask, | |
2391 | }; | |
2392 | struct nfs4_getattr_res res = { | |
2393 | .fattr = fattr, | |
2394 | .server = server, | |
2395 | }; | |
2396 | struct rpc_message msg = { | |
2397 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2398 | .rpc_argp = &args, | |
2399 | .rpc_resp = &res, | |
2400 | }; | |
2401 | ||
0e574af1 | 2402 | nfs_fattr_init(fattr); |
7c513058 | 2403 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2404 | } |
2405 | ||
2406 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2407 | { | |
2408 | struct nfs4_exception exception = { }; | |
2409 | int err; | |
2410 | do { | |
2411 | err = nfs4_handle_exception(server, | |
2412 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2413 | &exception); | |
2414 | } while (exception.retry); | |
2415 | return err; | |
2416 | } | |
2417 | ||
2418 | /* | |
2419 | * The file is not closed if it is opened due to the a request to change | |
2420 | * the size of the file. The open call will not be needed once the | |
2421 | * VFS layer lookup-intents are implemented. | |
2422 | * | |
2423 | * Close is called when the inode is destroyed. | |
2424 | * If we haven't opened the file for O_WRONLY, we | |
2425 | * need to in the size_change case to obtain a stateid. | |
2426 | * | |
2427 | * Got race? | |
2428 | * Because OPEN is always done by name in nfsv4, it is | |
2429 | * possible that we opened a different file by the same | |
2430 | * name. We can recognize this race condition, but we | |
2431 | * can't do anything about it besides returning an error. | |
2432 | * | |
2433 | * This will be fixed with VFS changes (lookup-intent). | |
2434 | */ | |
2435 | static int | |
2436 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2437 | struct iattr *sattr) | |
2438 | { | |
08e9eac4 | 2439 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2440 | struct rpc_cred *cred = NULL; |
d530838b | 2441 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2442 | int status; |
2443 | ||
8a1636c4 BH |
2444 | if (pnfs_ld_layoutret_on_setattr(inode)) |
2445 | pnfs_return_layout(inode); | |
2446 | ||
0e574af1 | 2447 | nfs_fattr_init(fattr); |
1da177e4 | 2448 | |
d530838b | 2449 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2450 | if (sattr->ia_valid & ATTR_FILE) { |
2451 | struct nfs_open_context *ctx; | |
2452 | ||
2453 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2454 | if (ctx) { |
2455 | cred = ctx->cred; | |
2456 | state = ctx->state; | |
2457 | } | |
659bfcd6 | 2458 | } |
08e9eac4 | 2459 | |
536e43d1 TM |
2460 | /* Deal with open(O_TRUNC) */ |
2461 | if (sattr->ia_valid & ATTR_OPEN) | |
2462 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME|ATTR_OPEN); | |
2463 | ||
659bfcd6 | 2464 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2465 | if (status == 0) |
2466 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2467 | return status; |
2468 | } | |
2469 | ||
0c2e53f1 TM |
2470 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
2471 | const struct qstr *name, struct nfs_fh *fhandle, | |
2472 | struct nfs_fattr *fattr) | |
2b3de441 | 2473 | { |
0c2e53f1 | 2474 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
2475 | int status; |
2476 | struct nfs4_lookup_arg args = { | |
2477 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 2478 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
2479 | .name = name, |
2480 | }; | |
2481 | struct nfs4_lookup_res res = { | |
2482 | .server = server, | |
2483 | .fattr = fattr, | |
2484 | .fh = fhandle, | |
2485 | }; | |
2486 | struct rpc_message msg = { | |
2487 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2488 | .rpc_argp = &args, | |
2489 | .rpc_resp = &res, | |
2490 | }; | |
2491 | ||
2492 | nfs_fattr_init(fattr); | |
2493 | ||
1da177e4 | 2494 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 2495 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2496 | dprintk("NFS reply lookup: %d\n", status); |
2497 | return status; | |
2498 | } | |
2499 | ||
7ebb9315 BS |
2500 | void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr, struct nfs_fh *fh) |
2501 | { | |
2502 | memset(fh, 0, sizeof(struct nfs_fh)); | |
2503 | fattr->fsid.major = 1; | |
2504 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
2505 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_FSID | NFS_ATTR_FATTR_MOUNTPOINT; | |
2506 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; | |
2507 | fattr->nlink = 2; | |
2508 | } | |
2509 | ||
7c513058 BS |
2510 | static int nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, struct qstr *name, |
2511 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
1da177e4 LT |
2512 | { |
2513 | struct nfs4_exception exception = { }; | |
2514 | int err; | |
2515 | do { | |
0c2e53f1 TM |
2516 | int status; |
2517 | ||
2518 | status = _nfs4_proc_lookup(clnt, dir, name, fhandle, fattr); | |
2519 | switch (status) { | |
08ef7bd3 TM |
2520 | case -NFS4ERR_BADNAME: |
2521 | return -ENOENT; | |
0c2e53f1 | 2522 | case -NFS4ERR_MOVED: |
a6f498a8 | 2523 | return nfs4_get_referral(dir, name, fattr, fhandle); |
0c2e53f1 | 2524 | case -NFS4ERR_WRONGSEC: |
7ebb9315 | 2525 | nfs_fixup_secinfo_attributes(fattr, fhandle); |
0c2e53f1 TM |
2526 | } |
2527 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2528 | status, &exception); | |
1da177e4 LT |
2529 | } while (exception.retry); |
2530 | return err; | |
2531 | } | |
2532 | ||
2533 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2534 | { | |
76b32999 | 2535 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2536 | struct nfs4_accessargs args = { |
2537 | .fh = NFS_FH(inode), | |
a4980e78 | 2538 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
2539 | }; |
2540 | struct nfs4_accessres res = { | |
2541 | .server = server, | |
1da177e4 | 2542 | }; |
1da177e4 LT |
2543 | struct rpc_message msg = { |
2544 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2545 | .rpc_argp = &args, | |
2546 | .rpc_resp = &res, | |
2547 | .rpc_cred = entry->cred, | |
2548 | }; | |
2549 | int mode = entry->mask; | |
2550 | int status; | |
2551 | ||
2552 | /* | |
2553 | * Determine which access bits we want to ask for... | |
2554 | */ | |
2555 | if (mode & MAY_READ) | |
2556 | args.access |= NFS4_ACCESS_READ; | |
2557 | if (S_ISDIR(inode->i_mode)) { | |
2558 | if (mode & MAY_WRITE) | |
2559 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2560 | if (mode & MAY_EXEC) | |
2561 | args.access |= NFS4_ACCESS_LOOKUP; | |
2562 | } else { | |
2563 | if (mode & MAY_WRITE) | |
2564 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2565 | if (mode & MAY_EXEC) | |
2566 | args.access |= NFS4_ACCESS_EXECUTE; | |
2567 | } | |
c407d41a TM |
2568 | |
2569 | res.fattr = nfs_alloc_fattr(); | |
2570 | if (res.fattr == NULL) | |
2571 | return -ENOMEM; | |
2572 | ||
7c513058 | 2573 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2574 | if (!status) { |
2575 | entry->mask = 0; | |
2576 | if (res.access & NFS4_ACCESS_READ) | |
2577 | entry->mask |= MAY_READ; | |
2578 | if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE)) | |
2579 | entry->mask |= MAY_WRITE; | |
2580 | if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE)) | |
2581 | entry->mask |= MAY_EXEC; | |
c407d41a | 2582 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2583 | } |
c407d41a | 2584 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2585 | return status; |
2586 | } | |
2587 | ||
2588 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2589 | { | |
2590 | struct nfs4_exception exception = { }; | |
2591 | int err; | |
2592 | do { | |
2593 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2594 | _nfs4_proc_access(inode, entry), | |
2595 | &exception); | |
2596 | } while (exception.retry); | |
2597 | return err; | |
2598 | } | |
2599 | ||
2600 | /* | |
2601 | * TODO: For the time being, we don't try to get any attributes | |
2602 | * along with any of the zero-copy operations READ, READDIR, | |
2603 | * READLINK, WRITE. | |
2604 | * | |
2605 | * In the case of the first three, we want to put the GETATTR | |
2606 | * after the read-type operation -- this is because it is hard | |
2607 | * to predict the length of a GETATTR response in v4, and thus | |
2608 | * align the READ data correctly. This means that the GETATTR | |
2609 | * may end up partially falling into the page cache, and we should | |
2610 | * shift it into the 'tail' of the xdr_buf before processing. | |
2611 | * To do this efficiently, we need to know the total length | |
2612 | * of data received, which doesn't seem to be available outside | |
2613 | * of the RPC layer. | |
2614 | * | |
2615 | * In the case of WRITE, we also want to put the GETATTR after | |
2616 | * the operation -- in this case because we want to make sure | |
2617 | * we get the post-operation mtime and size. This means that | |
2618 | * we can't use xdr_encode_pages() as written: we need a variant | |
2619 | * of it which would leave room in the 'tail' iovec. | |
2620 | * | |
2621 | * Both of these changes to the XDR layer would in fact be quite | |
2622 | * minor, but I decided to leave them for a subsequent patch. | |
2623 | */ | |
2624 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2625 | unsigned int pgbase, unsigned int pglen) | |
2626 | { | |
2627 | struct nfs4_readlink args = { | |
2628 | .fh = NFS_FH(inode), | |
2629 | .pgbase = pgbase, | |
2630 | .pglen = pglen, | |
2631 | .pages = &page, | |
2632 | }; | |
f50c7000 | 2633 | struct nfs4_readlink_res res; |
1da177e4 LT |
2634 | struct rpc_message msg = { |
2635 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2636 | .rpc_argp = &args, | |
f50c7000 | 2637 | .rpc_resp = &res, |
1da177e4 LT |
2638 | }; |
2639 | ||
7c513058 | 2640 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2641 | } |
2642 | ||
2643 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2644 | unsigned int pgbase, unsigned int pglen) | |
2645 | { | |
2646 | struct nfs4_exception exception = { }; | |
2647 | int err; | |
2648 | do { | |
2649 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2650 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2651 | &exception); | |
2652 | } while (exception.retry); | |
2653 | return err; | |
2654 | } | |
2655 | ||
1da177e4 LT |
2656 | /* |
2657 | * Got race? | |
2658 | * We will need to arrange for the VFS layer to provide an atomic open. | |
2659 | * Until then, this create/open method is prone to inefficiency and race | |
2660 | * conditions due to the lookup, create, and open VFS calls from sys_open() | |
2661 | * placed on the wire. | |
2662 | * | |
2663 | * Given the above sorry state of affairs, I'm simply sending an OPEN. | |
2664 | * The file will be opened again in the subsequent VFS open call | |
2665 | * (nfs4_proc_file_open). | |
2666 | * | |
2667 | * The open for read will just hang around to be used by any process that | |
2668 | * opens the file O_RDONLY. This will all be resolved with the VFS changes. | |
2669 | */ | |
2670 | ||
2671 | static int | |
2672 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
c0204fd2 | 2673 | int flags, struct nfs_open_context *ctx) |
1da177e4 | 2674 | { |
82a2c1b7 | 2675 | struct dentry *de = dentry; |
1da177e4 | 2676 | struct nfs4_state *state; |
c0204fd2 TM |
2677 | struct rpc_cred *cred = NULL; |
2678 | fmode_t fmode = 0; | |
1da177e4 LT |
2679 | int status = 0; |
2680 | ||
c0204fd2 TM |
2681 | if (ctx != NULL) { |
2682 | cred = ctx->cred; | |
3d4ff43d | 2683 | de = ctx->dentry; |
c0204fd2 | 2684 | fmode = ctx->mode; |
1da177e4 | 2685 | } |
a8a5da99 | 2686 | sattr->ia_mode &= ~current_umask(); |
82a2c1b7 | 2687 | state = nfs4_do_open(dir, de, fmode, flags, sattr, cred); |
d4d9cdcb | 2688 | d_drop(dentry); |
1da177e4 LT |
2689 | if (IS_ERR(state)) { |
2690 | status = PTR_ERR(state); | |
c0204fd2 | 2691 | goto out; |
1da177e4 | 2692 | } |
d4d9cdcb | 2693 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2694 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
c0204fd2 TM |
2695 | if (ctx != NULL) |
2696 | ctx->state = state; | |
02a913a7 | 2697 | else |
643168c2 | 2698 | nfs4_close_sync(state, fmode); |
1da177e4 LT |
2699 | out: |
2700 | return status; | |
2701 | } | |
2702 | ||
2703 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2704 | { | |
16e42959 | 2705 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2706 | struct nfs_removeargs args = { |
1da177e4 | 2707 | .fh = NFS_FH(dir), |
4fdc17b2 TM |
2708 | .name.len = name->len, |
2709 | .name.name = name->name, | |
16e42959 TM |
2710 | .bitmask = server->attr_bitmask, |
2711 | }; | |
4fdc17b2 | 2712 | struct nfs_removeres res = { |
16e42959 | 2713 | .server = server, |
1da177e4 | 2714 | }; |
1da177e4 | 2715 | struct rpc_message msg = { |
4fdc17b2 TM |
2716 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
2717 | .rpc_argp = &args, | |
2718 | .rpc_resp = &res, | |
1da177e4 | 2719 | }; |
d346890b TM |
2720 | int status = -ENOMEM; |
2721 | ||
2722 | res.dir_attr = nfs_alloc_fattr(); | |
2723 | if (res.dir_attr == NULL) | |
2724 | goto out; | |
1da177e4 | 2725 | |
7c513058 | 2726 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
16e42959 TM |
2727 | if (status == 0) { |
2728 | update_changeattr(dir, &res.cinfo); | |
d346890b | 2729 | nfs_post_op_update_inode(dir, res.dir_attr); |
16e42959 | 2730 | } |
d346890b TM |
2731 | nfs_free_fattr(res.dir_attr); |
2732 | out: | |
1da177e4 LT |
2733 | return status; |
2734 | } | |
2735 | ||
2736 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2737 | { | |
2738 | struct nfs4_exception exception = { }; | |
2739 | int err; | |
2740 | do { | |
2741 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2742 | _nfs4_proc_remove(dir, name), | |
2743 | &exception); | |
2744 | } while (exception.retry); | |
2745 | return err; | |
2746 | } | |
2747 | ||
e4eff1a6 | 2748 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 2749 | { |
e4eff1a6 TM |
2750 | struct nfs_server *server = NFS_SERVER(dir); |
2751 | struct nfs_removeargs *args = msg->rpc_argp; | |
2752 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 2753 | |
a65318bf | 2754 | args->bitmask = server->cache_consistency_bitmask; |
e4eff1a6 | 2755 | res->server = server; |
1da177e4 | 2756 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
9d12b216 | 2757 | nfs41_init_sequence(&args->seq_args, &res->seq_res, 1); |
1da177e4 LT |
2758 | } |
2759 | ||
e4eff1a6 | 2760 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 2761 | { |
e4eff1a6 TM |
2762 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
2763 | ||
14516c3a TM |
2764 | if (!nfs4_sequence_done(task, &res->seq_res)) |
2765 | return 0; | |
9e33bed5 | 2766 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
2767 | return 0; |
2768 | update_changeattr(dir, &res->cinfo); | |
d346890b | 2769 | nfs_post_op_update_inode(dir, res->dir_attr); |
e4eff1a6 | 2770 | return 1; |
1da177e4 LT |
2771 | } |
2772 | ||
d3d4152a JL |
2773 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
2774 | { | |
2775 | struct nfs_server *server = NFS_SERVER(dir); | |
2776 | struct nfs_renameargs *arg = msg->rpc_argp; | |
2777 | struct nfs_renameres *res = msg->rpc_resp; | |
2778 | ||
2779 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
2780 | arg->bitmask = server->attr_bitmask; | |
2781 | res->server = server; | |
9d12b216 | 2782 | nfs41_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
2783 | } |
2784 | ||
2785 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
2786 | struct inode *new_dir) | |
2787 | { | |
2788 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
2789 | ||
2790 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
2791 | return 0; | |
2792 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
2793 | return 0; | |
2794 | ||
2795 | update_changeattr(old_dir, &res->old_cinfo); | |
2796 | nfs_post_op_update_inode(old_dir, res->old_fattr); | |
2797 | update_changeattr(new_dir, &res->new_cinfo); | |
2798 | nfs_post_op_update_inode(new_dir, res->new_fattr); | |
2799 | return 1; | |
2800 | } | |
2801 | ||
1da177e4 LT |
2802 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
2803 | struct inode *new_dir, struct qstr *new_name) | |
2804 | { | |
6caf2c82 | 2805 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 2806 | struct nfs_renameargs arg = { |
1da177e4 LT |
2807 | .old_dir = NFS_FH(old_dir), |
2808 | .new_dir = NFS_FH(new_dir), | |
2809 | .old_name = old_name, | |
2810 | .new_name = new_name, | |
6caf2c82 TM |
2811 | .bitmask = server->attr_bitmask, |
2812 | }; | |
e8582a8b | 2813 | struct nfs_renameres res = { |
6caf2c82 | 2814 | .server = server, |
1da177e4 | 2815 | }; |
1da177e4 LT |
2816 | struct rpc_message msg = { |
2817 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
2818 | .rpc_argp = &arg, | |
2819 | .rpc_resp = &res, | |
2820 | }; | |
011fff72 | 2821 | int status = -ENOMEM; |
1da177e4 | 2822 | |
011fff72 TM |
2823 | res.old_fattr = nfs_alloc_fattr(); |
2824 | res.new_fattr = nfs_alloc_fattr(); | |
2825 | if (res.old_fattr == NULL || res.new_fattr == NULL) | |
2826 | goto out; | |
1da177e4 | 2827 | |
7c513058 | 2828 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
2829 | if (!status) { |
2830 | update_changeattr(old_dir, &res.old_cinfo); | |
6caf2c82 | 2831 | nfs_post_op_update_inode(old_dir, res.old_fattr); |
1da177e4 | 2832 | update_changeattr(new_dir, &res.new_cinfo); |
6caf2c82 | 2833 | nfs_post_op_update_inode(new_dir, res.new_fattr); |
1da177e4 | 2834 | } |
011fff72 TM |
2835 | out: |
2836 | nfs_free_fattr(res.new_fattr); | |
2837 | nfs_free_fattr(res.old_fattr); | |
1da177e4 LT |
2838 | return status; |
2839 | } | |
2840 | ||
2841 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2842 | struct inode *new_dir, struct qstr *new_name) | |
2843 | { | |
2844 | struct nfs4_exception exception = { }; | |
2845 | int err; | |
2846 | do { | |
2847 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
2848 | _nfs4_proc_rename(old_dir, old_name, | |
2849 | new_dir, new_name), | |
2850 | &exception); | |
2851 | } while (exception.retry); | |
2852 | return err; | |
2853 | } | |
2854 | ||
2855 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2856 | { | |
91ba2eee | 2857 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2858 | struct nfs4_link_arg arg = { |
2859 | .fh = NFS_FH(inode), | |
2860 | .dir_fh = NFS_FH(dir), | |
2861 | .name = name, | |
91ba2eee TM |
2862 | .bitmask = server->attr_bitmask, |
2863 | }; | |
91ba2eee TM |
2864 | struct nfs4_link_res res = { |
2865 | .server = server, | |
1da177e4 | 2866 | }; |
1da177e4 LT |
2867 | struct rpc_message msg = { |
2868 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
2869 | .rpc_argp = &arg, | |
91ba2eee | 2870 | .rpc_resp = &res, |
1da177e4 | 2871 | }; |
136f2627 TM |
2872 | int status = -ENOMEM; |
2873 | ||
2874 | res.fattr = nfs_alloc_fattr(); | |
2875 | res.dir_attr = nfs_alloc_fattr(); | |
2876 | if (res.fattr == NULL || res.dir_attr == NULL) | |
2877 | goto out; | |
1da177e4 | 2878 | |
7c513058 | 2879 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
2880 | if (!status) { |
2881 | update_changeattr(dir, &res.cinfo); | |
2882 | nfs_post_op_update_inode(dir, res.dir_attr); | |
73a3d07c | 2883 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 2884 | } |
136f2627 TM |
2885 | out: |
2886 | nfs_free_fattr(res.dir_attr); | |
2887 | nfs_free_fattr(res.fattr); | |
1da177e4 LT |
2888 | return status; |
2889 | } | |
2890 | ||
2891 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2892 | { | |
2893 | struct nfs4_exception exception = { }; | |
2894 | int err; | |
2895 | do { | |
2896 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2897 | _nfs4_proc_link(inode, dir, name), | |
2898 | &exception); | |
2899 | } while (exception.retry); | |
2900 | return err; | |
2901 | } | |
2902 | ||
57dc9a57 TM |
2903 | struct nfs4_createdata { |
2904 | struct rpc_message msg; | |
2905 | struct nfs4_create_arg arg; | |
2906 | struct nfs4_create_res res; | |
2907 | struct nfs_fh fh; | |
2908 | struct nfs_fattr fattr; | |
2909 | struct nfs_fattr dir_fattr; | |
2910 | }; | |
2911 | ||
2912 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
2913 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
2914 | { | |
2915 | struct nfs4_createdata *data; | |
2916 | ||
2917 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
2918 | if (data != NULL) { | |
2919 | struct nfs_server *server = NFS_SERVER(dir); | |
2920 | ||
2921 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
2922 | data->msg.rpc_argp = &data->arg; | |
2923 | data->msg.rpc_resp = &data->res; | |
2924 | data->arg.dir_fh = NFS_FH(dir); | |
2925 | data->arg.server = server; | |
2926 | data->arg.name = name; | |
2927 | data->arg.attrs = sattr; | |
2928 | data->arg.ftype = ftype; | |
2929 | data->arg.bitmask = server->attr_bitmask; | |
2930 | data->res.server = server; | |
2931 | data->res.fh = &data->fh; | |
2932 | data->res.fattr = &data->fattr; | |
2933 | data->res.dir_fattr = &data->dir_fattr; | |
2934 | nfs_fattr_init(data->res.fattr); | |
2935 | nfs_fattr_init(data->res.dir_fattr); | |
2936 | } | |
2937 | return data; | |
2938 | } | |
2939 | ||
2940 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
2941 | { | |
7c513058 | 2942 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 2943 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
2944 | if (status == 0) { |
2945 | update_changeattr(dir, &data->res.dir_cinfo); | |
2946 | nfs_post_op_update_inode(dir, data->res.dir_fattr); | |
2947 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); | |
2948 | } | |
2949 | return status; | |
2950 | } | |
2951 | ||
2952 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
2953 | { | |
2954 | kfree(data); | |
2955 | } | |
2956 | ||
4f390c15 | 2957 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2958 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 2959 | { |
57dc9a57 TM |
2960 | struct nfs4_createdata *data; |
2961 | int status = -ENAMETOOLONG; | |
1da177e4 | 2962 | |
94a6d753 | 2963 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 2964 | goto out; |
4f390c15 | 2965 | |
57dc9a57 TM |
2966 | status = -ENOMEM; |
2967 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
2968 | if (data == NULL) | |
2969 | goto out; | |
2970 | ||
2971 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
2972 | data->arg.u.symlink.pages = &page; | |
2973 | data->arg.u.symlink.len = len; | |
1da177e4 | 2974 | |
57dc9a57 TM |
2975 | status = nfs4_do_create(dir, dentry, data); |
2976 | ||
2977 | nfs4_free_createdata(data); | |
2978 | out: | |
1da177e4 LT |
2979 | return status; |
2980 | } | |
2981 | ||
4f390c15 | 2982 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2983 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
2984 | { |
2985 | struct nfs4_exception exception = { }; | |
2986 | int err; | |
2987 | do { | |
2988 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
2989 | _nfs4_proc_symlink(dir, dentry, page, |
2990 | len, sattr), | |
1da177e4 LT |
2991 | &exception); |
2992 | } while (exception.retry); | |
2993 | return err; | |
2994 | } | |
2995 | ||
2996 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2997 | struct iattr *sattr) | |
2998 | { | |
57dc9a57 TM |
2999 | struct nfs4_createdata *data; |
3000 | int status = -ENOMEM; | |
1da177e4 | 3001 | |
57dc9a57 TM |
3002 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3003 | if (data == NULL) | |
3004 | goto out; | |
3005 | ||
3006 | status = nfs4_do_create(dir, dentry, data); | |
3007 | ||
3008 | nfs4_free_createdata(data); | |
3009 | out: | |
1da177e4 LT |
3010 | return status; |
3011 | } | |
3012 | ||
3013 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3014 | struct iattr *sattr) | |
3015 | { | |
3016 | struct nfs4_exception exception = { }; | |
3017 | int err; | |
a8a5da99 AK |
3018 | |
3019 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3020 | do { |
3021 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3022 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
3023 | &exception); | |
3024 | } while (exception.retry); | |
3025 | return err; | |
3026 | } | |
3027 | ||
3028 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3029 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3030 | { |
3031 | struct inode *dir = dentry->d_inode; | |
3032 | struct nfs4_readdir_arg args = { | |
3033 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3034 | .pages = pages, |
1da177e4 LT |
3035 | .pgbase = 0, |
3036 | .count = count, | |
96d25e53 | 3037 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3038 | .plus = plus, |
1da177e4 LT |
3039 | }; |
3040 | struct nfs4_readdir_res res; | |
3041 | struct rpc_message msg = { | |
3042 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3043 | .rpc_argp = &args, | |
3044 | .rpc_resp = &res, | |
3045 | .rpc_cred = cred, | |
3046 | }; | |
3047 | int status; | |
3048 | ||
3110ff80 | 3049 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
3050 | dentry->d_parent->d_name.name, |
3051 | dentry->d_name.name, | |
3052 | (unsigned long long)cookie); | |
1da177e4 LT |
3053 | nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args); |
3054 | res.pgbase = args.pgbase; | |
7c513058 | 3055 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3056 | if (status >= 0) { |
1da177e4 | 3057 | memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3058 | status += args.pgbase; |
3059 | } | |
c4812998 TM |
3060 | |
3061 | nfs_invalidate_atime(dir); | |
3062 | ||
3110ff80 | 3063 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3064 | return status; |
3065 | } | |
3066 | ||
3067 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3068 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3069 | { |
3070 | struct nfs4_exception exception = { }; | |
3071 | int err; | |
3072 | do { | |
3073 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
3074 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 3075 | pages, count, plus), |
1da177e4 LT |
3076 | &exception); |
3077 | } while (exception.retry); | |
3078 | return err; | |
3079 | } | |
3080 | ||
3081 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3082 | struct iattr *sattr, dev_t rdev) | |
3083 | { | |
57dc9a57 TM |
3084 | struct nfs4_createdata *data; |
3085 | int mode = sattr->ia_mode; | |
3086 | int status = -ENOMEM; | |
1da177e4 LT |
3087 | |
3088 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
3089 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
57dc9a57 TM |
3090 | |
3091 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); | |
3092 | if (data == NULL) | |
3093 | goto out; | |
3094 | ||
1da177e4 | 3095 | if (S_ISFIFO(mode)) |
57dc9a57 | 3096 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3097 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3098 | data->arg.ftype = NF4BLK; |
3099 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3100 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3101 | } |
3102 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3103 | data->arg.ftype = NF4CHR; |
3104 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3105 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 | 3106 | } |
1da177e4 | 3107 | |
57dc9a57 TM |
3108 | status = nfs4_do_create(dir, dentry, data); |
3109 | ||
3110 | nfs4_free_createdata(data); | |
3111 | out: | |
1da177e4 LT |
3112 | return status; |
3113 | } | |
3114 | ||
3115 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3116 | struct iattr *sattr, dev_t rdev) | |
3117 | { | |
3118 | struct nfs4_exception exception = { }; | |
3119 | int err; | |
a8a5da99 AK |
3120 | |
3121 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3122 | do { |
3123 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3124 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
3125 | &exception); | |
3126 | } while (exception.retry); | |
3127 | return err; | |
3128 | } | |
3129 | ||
3130 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3131 | struct nfs_fsstat *fsstat) | |
3132 | { | |
3133 | struct nfs4_statfs_arg args = { | |
3134 | .fh = fhandle, | |
3135 | .bitmask = server->attr_bitmask, | |
3136 | }; | |
24ad148a BH |
3137 | struct nfs4_statfs_res res = { |
3138 | .fsstat = fsstat, | |
3139 | }; | |
1da177e4 LT |
3140 | struct rpc_message msg = { |
3141 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3142 | .rpc_argp = &args, | |
24ad148a | 3143 | .rpc_resp = &res, |
1da177e4 LT |
3144 | }; |
3145 | ||
0e574af1 | 3146 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3147 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3148 | } |
3149 | ||
3150 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3151 | { | |
3152 | struct nfs4_exception exception = { }; | |
3153 | int err; | |
3154 | do { | |
3155 | err = nfs4_handle_exception(server, | |
3156 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3157 | &exception); | |
3158 | } while (exception.retry); | |
3159 | return err; | |
3160 | } | |
3161 | ||
3162 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3163 | struct nfs_fsinfo *fsinfo) | |
3164 | { | |
3165 | struct nfs4_fsinfo_arg args = { | |
3166 | .fh = fhandle, | |
3167 | .bitmask = server->attr_bitmask, | |
3168 | }; | |
3dda5e43 BH |
3169 | struct nfs4_fsinfo_res res = { |
3170 | .fsinfo = fsinfo, | |
3171 | }; | |
1da177e4 LT |
3172 | struct rpc_message msg = { |
3173 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3174 | .rpc_argp = &args, | |
3dda5e43 | 3175 | .rpc_resp = &res, |
1da177e4 LT |
3176 | }; |
3177 | ||
7c513058 | 3178 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3179 | } |
3180 | ||
3181 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3182 | { | |
3183 | struct nfs4_exception exception = { }; | |
3184 | int err; | |
3185 | ||
3186 | do { | |
3187 | err = nfs4_handle_exception(server, | |
3188 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
3189 | &exception); | |
3190 | } while (exception.retry); | |
3191 | return err; | |
3192 | } | |
3193 | ||
3194 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3195 | { | |
0e574af1 | 3196 | nfs_fattr_init(fsinfo->fattr); |
1da177e4 LT |
3197 | return nfs4_do_fsinfo(server, fhandle, fsinfo); |
3198 | } | |
3199 | ||
3200 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3201 | struct nfs_pathconf *pathconf) | |
3202 | { | |
3203 | struct nfs4_pathconf_arg args = { | |
3204 | .fh = fhandle, | |
3205 | .bitmask = server->attr_bitmask, | |
3206 | }; | |
d45b2989 BH |
3207 | struct nfs4_pathconf_res res = { |
3208 | .pathconf = pathconf, | |
3209 | }; | |
1da177e4 LT |
3210 | struct rpc_message msg = { |
3211 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3212 | .rpc_argp = &args, | |
d45b2989 | 3213 | .rpc_resp = &res, |
1da177e4 LT |
3214 | }; |
3215 | ||
3216 | /* None of the pathconf attributes are mandatory to implement */ | |
3217 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3218 | memset(pathconf, 0, sizeof(*pathconf)); | |
3219 | return 0; | |
3220 | } | |
3221 | ||
0e574af1 | 3222 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3223 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3224 | } |
3225 | ||
3226 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3227 | struct nfs_pathconf *pathconf) | |
3228 | { | |
3229 | struct nfs4_exception exception = { }; | |
3230 | int err; | |
3231 | ||
3232 | do { | |
3233 | err = nfs4_handle_exception(server, | |
3234 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3235 | &exception); | |
3236 | } while (exception.retry); | |
3237 | return err; | |
3238 | } | |
3239 | ||
d20581aa BH |
3240 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3241 | { | |
3242 | nfs_invalidate_atime(data->inode); | |
3243 | } | |
3244 | ||
cbdabc7f | 3245 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3246 | { |
ec06c096 | 3247 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 3248 | |
9e33bed5 | 3249 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3250 | rpc_restart_call_prepare(task); |
ec06c096 | 3251 | return -EAGAIN; |
1da177e4 | 3252 | } |
8850df99 | 3253 | |
d20581aa | 3254 | __nfs4_read_done_cb(data); |
1da177e4 | 3255 | if (task->tk_status > 0) |
ec06c096 TM |
3256 | renew_lease(server, data->timestamp); |
3257 | return 0; | |
1da177e4 LT |
3258 | } |
3259 | ||
cbdabc7f AA |
3260 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3261 | { | |
3262 | ||
3263 | dprintk("--> %s\n", __func__); | |
3264 | ||
3265 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3266 | return -EAGAIN; | |
3267 | ||
d20581aa BH |
3268 | return data->read_done_cb ? data->read_done_cb(task, data) : |
3269 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
3270 | } |
3271 | ||
bdc7f021 | 3272 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3273 | { |
1da177e4 | 3274 | data->timestamp = jiffies; |
cbdabc7f | 3275 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3276 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
9d12b216 | 3277 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
1da177e4 LT |
3278 | } |
3279 | ||
cbdabc7f AA |
3280 | /* Reset the the nfs_read_data to send the read to the MDS. */ |
3281 | void nfs4_reset_read(struct rpc_task *task, struct nfs_read_data *data) | |
3282 | { | |
3283 | dprintk("%s Reset task for i/o through\n", __func__); | |
3284 | put_lseg(data->lseg); | |
3285 | data->lseg = NULL; | |
3286 | /* offsets will differ in the dense stripe case */ | |
3287 | data->args.offset = data->mds_offset; | |
3288 | data->ds_clp = NULL; | |
3289 | data->args.fh = NFS_FH(data->inode); | |
3290 | data->read_done_cb = nfs4_read_done_cb; | |
3291 | task->tk_ops = data->mds_ops; | |
3292 | rpc_task_reset_client(task, NFS_CLIENT(data->inode)); | |
3293 | } | |
3294 | EXPORT_SYMBOL_GPL(nfs4_reset_read); | |
3295 | ||
b029bc9b | 3296 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3297 | { |
1da177e4 LT |
3298 | struct inode *inode = data->inode; |
3299 | ||
9e33bed5 | 3300 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3301 | rpc_restart_call_prepare(task); |
788e7a89 | 3302 | return -EAGAIN; |
1da177e4 | 3303 | } |
4f9838c7 | 3304 | if (task->tk_status >= 0) { |
1da177e4 | 3305 | renew_lease(NFS_SERVER(inode), data->timestamp); |
70ca8852 | 3306 | nfs_post_op_update_inode_force_wcc(inode, data->res.fattr); |
4f9838c7 | 3307 | } |
788e7a89 | 3308 | return 0; |
1da177e4 LT |
3309 | } |
3310 | ||
b029bc9b FI |
3311 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3312 | { | |
3313 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3314 | return -EAGAIN; | |
d20581aa BH |
3315 | return data->write_done_cb ? data->write_done_cb(task, data) : |
3316 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
3317 | } |
3318 | ||
a69aef14 FI |
3319 | /* Reset the the nfs_write_data to send the write to the MDS. */ |
3320 | void nfs4_reset_write(struct rpc_task *task, struct nfs_write_data *data) | |
3321 | { | |
3322 | dprintk("%s Reset task for i/o through\n", __func__); | |
3323 | put_lseg(data->lseg); | |
3324 | data->lseg = NULL; | |
3325 | data->ds_clp = NULL; | |
3326 | data->write_done_cb = nfs4_write_done_cb; | |
3327 | data->args.fh = NFS_FH(data->inode); | |
3328 | data->args.bitmask = data->res.server->cache_consistency_bitmask; | |
3329 | data->args.offset = data->mds_offset; | |
3330 | data->res.fattr = &data->fattr; | |
3331 | task->tk_ops = data->mds_ops; | |
3332 | rpc_task_reset_client(task, NFS_CLIENT(data->inode)); | |
3333 | } | |
3334 | EXPORT_SYMBOL_GPL(nfs4_reset_write); | |
3335 | ||
bdc7f021 | 3336 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3337 | { |
bdc7f021 TM |
3338 | struct nfs_server *server = NFS_SERVER(data->inode); |
3339 | ||
7ffd1064 FI |
3340 | if (data->lseg) { |
3341 | data->args.bitmask = NULL; | |
3342 | data->res.fattr = NULL; | |
3343 | } else | |
3344 | data->args.bitmask = server->cache_consistency_bitmask; | |
b029bc9b FI |
3345 | if (!data->write_done_cb) |
3346 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3347 | data->res.server = server; |
1da177e4 LT |
3348 | data->timestamp = jiffies; |
3349 | ||
bdc7f021 | 3350 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
9d12b216 | 3351 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3352 | } |
3353 | ||
5f452431 | 3354 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3355 | { |
1da177e4 | 3356 | struct inode *inode = data->inode; |
14516c3a | 3357 | |
9e33bed5 | 3358 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
d00c5d43 | 3359 | rpc_restart_call_prepare(task); |
788e7a89 | 3360 | return -EAGAIN; |
1da177e4 | 3361 | } |
9e08a3c5 | 3362 | nfs_refresh_inode(inode, data->res.fattr); |
788e7a89 | 3363 | return 0; |
1da177e4 LT |
3364 | } |
3365 | ||
5f452431 FI |
3366 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data) |
3367 | { | |
3368 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3369 | return -EAGAIN; | |
3370 | return data->write_done_cb(task, data); | |
3371 | } | |
3372 | ||
bdc7f021 | 3373 | static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3374 | { |
788e7a89 | 3375 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce FI |
3376 | |
3377 | if (data->lseg) { | |
3378 | data->args.bitmask = NULL; | |
3379 | data->res.fattr = NULL; | |
3380 | } else | |
3381 | data->args.bitmask = server->cache_consistency_bitmask; | |
5f452431 FI |
3382 | if (!data->write_done_cb) |
3383 | data->write_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 3384 | data->res.server = server; |
bdc7f021 | 3385 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
9d12b216 | 3386 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3387 | } |
3388 | ||
9bc4e3ca CL |
3389 | struct nfs4_renewdata { |
3390 | struct nfs_client *client; | |
3391 | unsigned long timestamp; | |
3392 | }; | |
3393 | ||
1da177e4 LT |
3394 | /* |
3395 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3396 | * standalone procedure for queueing an asynchronous RENEW. | |
3397 | */ | |
9bc4e3ca | 3398 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3399 | { |
9bc4e3ca CL |
3400 | struct nfs4_renewdata *data = calldata; |
3401 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3402 | |
0851de06 AB |
3403 | if (atomic_read(&clp->cl_count) > 1) |
3404 | nfs4_schedule_state_renewal(clp); | |
3405 | nfs_put_client(clp); | |
9bc4e3ca | 3406 | kfree(data); |
dc96aef9 AB |
3407 | } |
3408 | ||
9bc4e3ca | 3409 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3410 | { |
9bc4e3ca CL |
3411 | struct nfs4_renewdata *data = calldata; |
3412 | struct nfs_client *clp = data->client; | |
3413 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3414 | |
3415 | if (task->tk_status < 0) { | |
95baa25c | 3416 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
3417 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
3418 | return; | |
3419 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 3420 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
3421 | return; |
3422 | } | |
3423 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 3424 | } |
452e9352 | 3425 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3426 | } |
3427 | ||
963d8fe5 TM |
3428 | static const struct rpc_call_ops nfs4_renew_ops = { |
3429 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3430 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3431 | }; |
3432 | ||
2f60ea6b | 3433 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
3434 | { |
3435 | struct rpc_message msg = { | |
3436 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3437 | .rpc_argp = clp, | |
b4454fe1 | 3438 | .rpc_cred = cred, |
1da177e4 | 3439 | }; |
9bc4e3ca | 3440 | struct nfs4_renewdata *data; |
1da177e4 | 3441 | |
2f60ea6b TM |
3442 | if (renew_flags == 0) |
3443 | return 0; | |
0851de06 AB |
3444 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3445 | return -EIO; | |
b569ad34 | 3446 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
3447 | if (data == NULL) |
3448 | return -ENOMEM; | |
3449 | data->client = clp; | |
3450 | data->timestamp = jiffies; | |
1da177e4 | 3451 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, |
9bc4e3ca | 3452 | &nfs4_renew_ops, data); |
1da177e4 LT |
3453 | } |
3454 | ||
8534d4ec | 3455 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3456 | { |
3457 | struct rpc_message msg = { | |
3458 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3459 | .rpc_argp = clp, | |
b4454fe1 | 3460 | .rpc_cred = cred, |
1da177e4 LT |
3461 | }; |
3462 | unsigned long now = jiffies; | |
3463 | int status; | |
3464 | ||
3465 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3466 | if (status < 0) | |
3467 | return status; | |
452e9352 | 3468 | do_renew_lease(clp, now); |
1da177e4 LT |
3469 | return 0; |
3470 | } | |
3471 | ||
aa1870af BF |
3472 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3473 | { | |
3474 | return (server->caps & NFS_CAP_ACLS) | |
3475 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3476 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3477 | } | |
3478 | ||
3479 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that | |
3480 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on | |
3481 | * the stack. | |
3482 | */ | |
3483 | #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT) | |
3484 | ||
e9e3d724 NH |
3485 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
3486 | struct page **pages, unsigned int *pgbase) | |
3487 | { | |
3488 | struct page *newpage, **spages; | |
3489 | int rc = 0; | |
3490 | size_t len; | |
3491 | spages = pages; | |
3492 | ||
3493 | do { | |
43b7c3f0 | 3494 | len = min_t(size_t, PAGE_CACHE_SIZE, buflen); |
e9e3d724 NH |
3495 | newpage = alloc_page(GFP_KERNEL); |
3496 | ||
3497 | if (newpage == NULL) | |
3498 | goto unwind; | |
3499 | memcpy(page_address(newpage), buf, len); | |
3500 | buf += len; | |
3501 | buflen -= len; | |
3502 | *pages++ = newpage; | |
3503 | rc++; | |
3504 | } while (buflen != 0); | |
3505 | ||
3506 | return rc; | |
3507 | ||
3508 | unwind: | |
3509 | for(; rc > 0; rc--) | |
3510 | __free_page(spages[rc-1]); | |
3511 | return -ENOMEM; | |
3512 | } | |
3513 | ||
e50a1c2e BF |
3514 | struct nfs4_cached_acl { |
3515 | int cached; | |
3516 | size_t len; | |
3e9d4154 | 3517 | char data[0]; |
e50a1c2e BF |
3518 | }; |
3519 | ||
3520 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3521 | { | |
3522 | struct nfs_inode *nfsi = NFS_I(inode); | |
3523 | ||
3524 | spin_lock(&inode->i_lock); | |
3525 | kfree(nfsi->nfs4_acl); | |
3526 | nfsi->nfs4_acl = acl; | |
3527 | spin_unlock(&inode->i_lock); | |
3528 | } | |
3529 | ||
3530 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3531 | { | |
3532 | nfs4_set_cached_acl(inode, NULL); | |
3533 | } | |
3534 | ||
3535 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3536 | { | |
3537 | struct nfs_inode *nfsi = NFS_I(inode); | |
3538 | struct nfs4_cached_acl *acl; | |
3539 | int ret = -ENOENT; | |
3540 | ||
3541 | spin_lock(&inode->i_lock); | |
3542 | acl = nfsi->nfs4_acl; | |
3543 | if (acl == NULL) | |
3544 | goto out; | |
3545 | if (buf == NULL) /* user is just asking for length */ | |
3546 | goto out_len; | |
3547 | if (acl->cached == 0) | |
3548 | goto out; | |
3549 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3550 | if (acl->len > buflen) | |
3551 | goto out; | |
3552 | memcpy(buf, acl->data, acl->len); | |
3553 | out_len: | |
3554 | ret = acl->len; | |
3555 | out: | |
3556 | spin_unlock(&inode->i_lock); | |
3557 | return ret; | |
3558 | } | |
3559 | ||
3560 | static void nfs4_write_cached_acl(struct inode *inode, const char *buf, size_t acl_len) | |
3561 | { | |
3562 | struct nfs4_cached_acl *acl; | |
3563 | ||
3564 | if (buf && acl_len <= PAGE_SIZE) { | |
3565 | acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL); | |
3566 | if (acl == NULL) | |
3567 | goto out; | |
3568 | acl->cached = 1; | |
3569 | memcpy(acl->data, buf, acl_len); | |
3570 | } else { | |
3571 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3572 | if (acl == NULL) | |
3573 | goto out; | |
3574 | acl->cached = 0; | |
3575 | } | |
3576 | acl->len = acl_len; | |
3577 | out: | |
3578 | nfs4_set_cached_acl(inode, acl); | |
3579 | } | |
3580 | ||
bf118a34 AA |
3581 | /* |
3582 | * The getxattr API returns the required buffer length when called with a | |
3583 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
3584 | * the required buf. On a NULL buf, we send a page of data to the server | |
3585 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
3586 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
3587 | * the cache. If not so, we throw away the page, and cache the required | |
3588 | * length. The next getxattr call will then produce another round trip to | |
3589 | * the server, this time with the input buf of the required size. | |
3590 | */ | |
16b4289c | 3591 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3592 | { |
bf118a34 | 3593 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
3594 | struct nfs_getaclargs args = { |
3595 | .fh = NFS_FH(inode), | |
3596 | .acl_pages = pages, | |
3597 | .acl_len = buflen, | |
3598 | }; | |
663c79b3 BH |
3599 | struct nfs_getaclres res = { |
3600 | .acl_len = buflen, | |
3601 | }; | |
e50a1c2e | 3602 | void *resp_buf; |
aa1870af BF |
3603 | struct rpc_message msg = { |
3604 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3605 | .rpc_argp = &args, | |
663c79b3 | 3606 | .rpc_resp = &res, |
aa1870af | 3607 | }; |
bf118a34 | 3608 | int ret = -ENOMEM, npages, i, acl_len = 0; |
aa1870af | 3609 | |
bf118a34 AA |
3610 | npages = (buflen + PAGE_SIZE - 1) >> PAGE_SHIFT; |
3611 | /* As long as we're doing a round trip to the server anyway, | |
3612 | * let's be prepared for a page of acl data. */ | |
3613 | if (npages == 0) | |
3614 | npages = 1; | |
3615 | ||
3616 | for (i = 0; i < npages; i++) { | |
3617 | pages[i] = alloc_page(GFP_KERNEL); | |
3618 | if (!pages[i]) | |
3619 | goto out_free; | |
e50a1c2e | 3620 | } |
bf118a34 AA |
3621 | if (npages > 1) { |
3622 | /* for decoding across pages */ | |
3623 | args.acl_scratch = alloc_page(GFP_KERNEL); | |
3624 | if (!args.acl_scratch) | |
3625 | goto out_free; | |
e50a1c2e | 3626 | } |
bf118a34 AA |
3627 | args.acl_len = npages * PAGE_SIZE; |
3628 | args.acl_pgbase = 0; | |
3629 | /* Let decode_getfacl know not to fail if the ACL data is larger than | |
3630 | * the page we send as a guess */ | |
3631 | if (buf == NULL) | |
3632 | res.acl_flags |= NFS4_ACL_LEN_REQUEST; | |
3633 | resp_buf = page_address(pages[0]); | |
3634 | ||
de040bec | 3635 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
3636 | __func__, buf, buflen, npages, args.acl_len); |
3637 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
3638 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
3639 | if (ret) |
3640 | goto out_free; | |
bf118a34 AA |
3641 | |
3642 | acl_len = res.acl_len - res.acl_data_offset; | |
3643 | if (acl_len > args.acl_len) | |
3644 | nfs4_write_cached_acl(inode, NULL, acl_len); | |
e50a1c2e | 3645 | else |
bf118a34 AA |
3646 | nfs4_write_cached_acl(inode, resp_buf + res.acl_data_offset, |
3647 | acl_len); | |
e50a1c2e BF |
3648 | if (buf) { |
3649 | ret = -ERANGE; | |
bf118a34 | 3650 | if (acl_len > buflen) |
e50a1c2e | 3651 | goto out_free; |
bf118a34 AA |
3652 | _copy_from_pages(buf, pages, res.acl_data_offset, |
3653 | res.acl_len); | |
e50a1c2e | 3654 | } |
bf118a34 | 3655 | ret = acl_len; |
e50a1c2e | 3656 | out_free: |
bf118a34 AA |
3657 | for (i = 0; i < npages; i++) |
3658 | if (pages[i]) | |
3659 | __free_page(pages[i]); | |
3660 | if (args.acl_scratch) | |
3661 | __free_page(args.acl_scratch); | |
aa1870af BF |
3662 | return ret; |
3663 | } | |
3664 | ||
16b4289c TM |
3665 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
3666 | { | |
3667 | struct nfs4_exception exception = { }; | |
3668 | ssize_t ret; | |
3669 | do { | |
3670 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
3671 | if (ret >= 0) | |
3672 | break; | |
3673 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
3674 | } while (exception.retry); | |
3675 | return ret; | |
3676 | } | |
3677 | ||
e50a1c2e BF |
3678 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
3679 | { | |
3680 | struct nfs_server *server = NFS_SERVER(inode); | |
3681 | int ret; | |
3682 | ||
3683 | if (!nfs4_server_supports_acls(server)) | |
3684 | return -EOPNOTSUPP; | |
3685 | ret = nfs_revalidate_inode(server, inode); | |
3686 | if (ret < 0) | |
3687 | return ret; | |
08a22b39 AK |
3688 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
3689 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
3690 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
3691 | if (ret != -ENOENT) | |
bf118a34 AA |
3692 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
3693 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
3694 | return ret; |
3695 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
3696 | } | |
3697 | ||
16b4289c | 3698 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
3699 | { |
3700 | struct nfs_server *server = NFS_SERVER(inode); | |
3701 | struct page *pages[NFS4ACL_MAXPAGES]; | |
3702 | struct nfs_setaclargs arg = { | |
3703 | .fh = NFS_FH(inode), | |
3704 | .acl_pages = pages, | |
3705 | .acl_len = buflen, | |
3706 | }; | |
73c403a9 | 3707 | struct nfs_setaclres res; |
4b580ee3 BF |
3708 | struct rpc_message msg = { |
3709 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
3710 | .rpc_argp = &arg, | |
73c403a9 | 3711 | .rpc_resp = &res, |
4b580ee3 | 3712 | }; |
e9e3d724 | 3713 | int ret, i; |
4b580ee3 BF |
3714 | |
3715 | if (!nfs4_server_supports_acls(server)) | |
3716 | return -EOPNOTSUPP; | |
e9e3d724 NH |
3717 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
3718 | if (i < 0) | |
3719 | return i; | |
642ac549 | 3720 | nfs_inode_return_delegation(inode); |
7c513058 | 3721 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
3722 | |
3723 | /* | |
3724 | * Free each page after tx, so the only ref left is | |
3725 | * held by the network stack | |
3726 | */ | |
3727 | for (; i > 0; i--) | |
3728 | put_page(pages[i-1]); | |
3729 | ||
08a22b39 AK |
3730 | /* |
3731 | * Acl update can result in inode attribute update. | |
3732 | * so mark the attribute cache invalid. | |
3733 | */ | |
3734 | spin_lock(&inode->i_lock); | |
3735 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
3736 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
3737 | nfs_access_zap_cache(inode); |
3738 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
3739 | return ret; |
3740 | } | |
3741 | ||
16b4289c TM |
3742 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
3743 | { | |
3744 | struct nfs4_exception exception = { }; | |
3745 | int err; | |
3746 | do { | |
3747 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3748 | __nfs4_proc_set_acl(inode, buf, buflen), | |
3749 | &exception); | |
3750 | } while (exception.retry); | |
3751 | return err; | |
3752 | } | |
3753 | ||
1da177e4 | 3754 | static int |
aa5190d0 | 3755 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 3756 | { |
aa5190d0 TM |
3757 | struct nfs_client *clp = server->nfs_client; |
3758 | ||
3759 | if (task->tk_status >= 0) | |
1da177e4 LT |
3760 | return 0; |
3761 | switch(task->tk_status) { | |
9e33bed5 TM |
3762 | case -NFS4ERR_ADMIN_REVOKED: |
3763 | case -NFS4ERR_BAD_STATEID: | |
3764 | case -NFS4ERR_OPENMODE: | |
3765 | if (state == NULL) | |
3766 | break; | |
0400a6b0 TM |
3767 | nfs4_schedule_stateid_recovery(server, state); |
3768 | goto wait_on_recovery; | |
0ced63d1 TM |
3769 | case -NFS4ERR_EXPIRED: |
3770 | if (state != NULL) | |
3771 | nfs4_schedule_stateid_recovery(server, state); | |
1da177e4 | 3772 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 3773 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
3774 | nfs4_schedule_lease_recovery(clp); |
3775 | goto wait_on_recovery; | |
4745e315 AA |
3776 | #if defined(CONFIG_NFS_V4_1) |
3777 | case -NFS4ERR_BADSESSION: | |
3778 | case -NFS4ERR_BADSLOT: | |
3779 | case -NFS4ERR_BAD_HIGH_SLOT: | |
3780 | case -NFS4ERR_DEADSESSION: | |
3781 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
3782 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
3783 | case -NFS4ERR_SEQ_MISORDERED: | |
3784 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
3785 | task->tk_status); | |
0400a6b0 | 3786 | nfs4_schedule_session_recovery(clp->cl_session); |
4745e315 AA |
3787 | task->tk_status = 0; |
3788 | return -EAGAIN; | |
3789 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 3790 | case -NFS4ERR_DELAY: |
aa5190d0 | 3791 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 3792 | case -NFS4ERR_GRACE: |
2c643488 | 3793 | case -EKEYEXPIRED: |
1da177e4 LT |
3794 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
3795 | task->tk_status = 0; | |
3796 | return -EAGAIN; | |
a8a4ae3a | 3797 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
3798 | case -NFS4ERR_OLD_STATEID: |
3799 | task->tk_status = 0; | |
3800 | return -EAGAIN; | |
3801 | } | |
3802 | task->tk_status = nfs4_map_errors(task->tk_status); | |
3803 | return 0; | |
0400a6b0 | 3804 | wait_on_recovery: |
a2c0b9e2 | 3805 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
3806 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
3807 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
3808 | task->tk_status = 0; | |
3809 | return -EAGAIN; | |
1da177e4 LT |
3810 | } |
3811 | ||
bb8b27e5 TM |
3812 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
3813 | unsigned short port, struct rpc_cred *cred, | |
3814 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
3815 | { |
3816 | nfs4_verifier sc_verifier; | |
3817 | struct nfs4_setclientid setclientid = { | |
3818 | .sc_verifier = &sc_verifier, | |
3819 | .sc_prog = program, | |
f4eecd5d | 3820 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
3821 | }; |
3822 | struct rpc_message msg = { | |
3823 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
3824 | .rpc_argp = &setclientid, | |
bb8b27e5 | 3825 | .rpc_resp = res, |
286d7d6a | 3826 | .rpc_cred = cred, |
1da177e4 | 3827 | }; |
bc4785cd | 3828 | __be32 *p; |
1da177e4 LT |
3829 | int loop = 0; |
3830 | int status; | |
3831 | ||
bc4785cd | 3832 | p = (__be32*)sc_verifier.data; |
1da177e4 LT |
3833 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); |
3834 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
3835 | ||
3836 | for(;;) { | |
2446ab60 | 3837 | rcu_read_lock(); |
1da177e4 | 3838 | setclientid.sc_name_len = scnprintf(setclientid.sc_name, |
69dd716c | 3839 | sizeof(setclientid.sc_name), "%s/%s %s %s %u", |
d4d3c507 CL |
3840 | clp->cl_ipaddr, |
3841 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3842 | RPC_DISPLAY_ADDR), | |
69dd716c TM |
3843 | rpc_peeraddr2str(clp->cl_rpcclient, |
3844 | RPC_DISPLAY_PROTO), | |
78ea323b | 3845 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
1da177e4 LT |
3846 | clp->cl_id_uniquifier); |
3847 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, | |
d4d3c507 CL |
3848 | sizeof(setclientid.sc_netid), |
3849 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3850 | RPC_DISPLAY_NETID)); | |
1da177e4 | 3851 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 3852 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 | 3853 | clp->cl_ipaddr, port >> 8, port & 255); |
2446ab60 | 3854 | rcu_read_unlock(); |
1da177e4 | 3855 | |
1bd714f2 | 3856 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
3857 | if (status != -NFS4ERR_CLID_INUSE) |
3858 | break; | |
fd954ae1 TM |
3859 | if (loop != 0) { |
3860 | ++clp->cl_id_uniquifier; | |
1da177e4 | 3861 | break; |
fd954ae1 TM |
3862 | } |
3863 | ++loop; | |
3864 | ssleep(clp->cl_lease_time / HZ + 1); | |
1da177e4 LT |
3865 | } |
3866 | return status; | |
3867 | } | |
3868 | ||
fd954ae1 | 3869 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
3870 | struct nfs4_setclientid_res *arg, |
3871 | struct rpc_cred *cred) | |
1da177e4 LT |
3872 | { |
3873 | struct nfs_fsinfo fsinfo; | |
3874 | struct rpc_message msg = { | |
3875 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 3876 | .rpc_argp = arg, |
1da177e4 | 3877 | .rpc_resp = &fsinfo, |
286d7d6a | 3878 | .rpc_cred = cred, |
1da177e4 LT |
3879 | }; |
3880 | unsigned long now; | |
3881 | int status; | |
3882 | ||
3883 | now = jiffies; | |
1bd714f2 | 3884 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
3885 | if (status == 0) { |
3886 | spin_lock(&clp->cl_lock); | |
3887 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
3888 | clp->cl_last_renewal = now; | |
3889 | spin_unlock(&clp->cl_lock); | |
3890 | } | |
3891 | return status; | |
3892 | } | |
3893 | ||
fe650407 TM |
3894 | struct nfs4_delegreturndata { |
3895 | struct nfs4_delegreturnargs args; | |
fa178f29 | 3896 | struct nfs4_delegreturnres res; |
fe650407 TM |
3897 | struct nfs_fh fh; |
3898 | nfs4_stateid stateid; | |
26e976a8 | 3899 | unsigned long timestamp; |
fa178f29 | 3900 | struct nfs_fattr fattr; |
fe650407 TM |
3901 | int rpc_status; |
3902 | }; | |
3903 | ||
fe650407 TM |
3904 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
3905 | { | |
3906 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 3907 | |
14516c3a TM |
3908 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
3909 | return; | |
938e1010 | 3910 | |
79708861 RL |
3911 | switch (task->tk_status) { |
3912 | case -NFS4ERR_STALE_STATEID: | |
3913 | case -NFS4ERR_EXPIRED: | |
3914 | case 0: | |
fa178f29 | 3915 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
3916 | break; |
3917 | default: | |
3918 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
3919 | -EAGAIN) { | |
d00c5d43 | 3920 | rpc_restart_call_prepare(task); |
79708861 RL |
3921 | return; |
3922 | } | |
3923 | } | |
3924 | data->rpc_status = task->tk_status; | |
fe650407 TM |
3925 | } |
3926 | ||
3927 | static void nfs4_delegreturn_release(void *calldata) | |
3928 | { | |
fe650407 TM |
3929 | kfree(calldata); |
3930 | } | |
3931 | ||
938e1010 AA |
3932 | #if defined(CONFIG_NFS_V4_1) |
3933 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
3934 | { | |
3935 | struct nfs4_delegreturndata *d_data; | |
3936 | ||
3937 | d_data = (struct nfs4_delegreturndata *)data; | |
3938 | ||
035168ab | 3939 | if (nfs4_setup_sequence(d_data->res.server, |
938e1010 | 3940 | &d_data->args.seq_args, |
9d12b216 | 3941 | &d_data->res.seq_res, task)) |
938e1010 AA |
3942 | return; |
3943 | rpc_call_start(task); | |
3944 | } | |
3945 | #endif /* CONFIG_NFS_V4_1 */ | |
3946 | ||
c8d149f3 | 3947 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
3948 | #if defined(CONFIG_NFS_V4_1) |
3949 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
3950 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
3951 | .rpc_call_done = nfs4_delegreturn_done, |
3952 | .rpc_release = nfs4_delegreturn_release, | |
3953 | }; | |
3954 | ||
e6f81075 | 3955 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
3956 | { |
3957 | struct nfs4_delegreturndata *data; | |
fa178f29 | 3958 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 3959 | struct rpc_task *task; |
5138fde0 TM |
3960 | struct rpc_message msg = { |
3961 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
3962 | .rpc_cred = cred, | |
3963 | }; | |
c970aa85 TM |
3964 | struct rpc_task_setup task_setup_data = { |
3965 | .rpc_client = server->client, | |
5138fde0 | 3966 | .rpc_message = &msg, |
c970aa85 TM |
3967 | .callback_ops = &nfs4_delegreturn_ops, |
3968 | .flags = RPC_TASK_ASYNC, | |
3969 | }; | |
e6f81075 | 3970 | int status = 0; |
fe650407 | 3971 | |
8535b2be | 3972 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
3973 | if (data == NULL) |
3974 | return -ENOMEM; | |
9d12b216 | 3975 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
3976 | data->args.fhandle = &data->fh; |
3977 | data->args.stateid = &data->stateid; | |
fa178f29 | 3978 | data->args.bitmask = server->attr_bitmask; |
fe650407 TM |
3979 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
3980 | memcpy(&data->stateid, stateid, sizeof(data->stateid)); | |
fa178f29 TM |
3981 | data->res.fattr = &data->fattr; |
3982 | data->res.server = server; | |
5138fde0 | 3983 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 3984 | data->timestamp = jiffies; |
fe650407 TM |
3985 | data->rpc_status = 0; |
3986 | ||
c970aa85 | 3987 | task_setup_data.callback_data = data; |
1174dd1f TM |
3988 | msg.rpc_argp = &data->args; |
3989 | msg.rpc_resp = &data->res; | |
c970aa85 | 3990 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 3991 | if (IS_ERR(task)) |
fe650407 | 3992 | return PTR_ERR(task); |
e6f81075 TM |
3993 | if (!issync) |
3994 | goto out; | |
fe650407 | 3995 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
3996 | if (status != 0) |
3997 | goto out; | |
3998 | status = data->rpc_status; | |
3999 | if (status != 0) | |
4000 | goto out; | |
4001 | nfs_refresh_inode(inode, &data->fattr); | |
4002 | out: | |
e6b3c4db | 4003 | rpc_put_task(task); |
fe650407 | 4004 | return status; |
1da177e4 LT |
4005 | } |
4006 | ||
e6f81075 | 4007 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
4008 | { |
4009 | struct nfs_server *server = NFS_SERVER(inode); | |
4010 | struct nfs4_exception exception = { }; | |
4011 | int err; | |
4012 | do { | |
e6f81075 | 4013 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
4014 | switch (err) { |
4015 | case -NFS4ERR_STALE_STATEID: | |
4016 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
4017 | case 0: |
4018 | return 0; | |
4019 | } | |
4020 | err = nfs4_handle_exception(server, err, &exception); | |
4021 | } while (exception.retry); | |
4022 | return err; | |
4023 | } | |
4024 | ||
4025 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
4026 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
4027 | ||
4028 | /* | |
4029 | * sleep, with exponential backoff, and retry the LOCK operation. | |
4030 | */ | |
4031 | static unsigned long | |
4032 | nfs4_set_lock_task_retry(unsigned long timeout) | |
4033 | { | |
d310310c | 4034 | freezable_schedule_timeout_killable(timeout); |
1da177e4 LT |
4035 | timeout <<= 1; |
4036 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
4037 | return NFS4_LOCK_MAXTIMEOUT; | |
4038 | return timeout; | |
4039 | } | |
4040 | ||
1da177e4 LT |
4041 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4042 | { | |
4043 | struct inode *inode = state->inode; | |
4044 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 4045 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 4046 | struct nfs_lockt_args arg = { |
1da177e4 | 4047 | .fh = NFS_FH(inode), |
911d1aaf | 4048 | .fl = request, |
1da177e4 | 4049 | }; |
911d1aaf TM |
4050 | struct nfs_lockt_res res = { |
4051 | .denied = request, | |
1da177e4 LT |
4052 | }; |
4053 | struct rpc_message msg = { | |
4054 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
4055 | .rpc_argp = &arg, | |
4056 | .rpc_resp = &res, | |
4057 | .rpc_cred = state->owner->so_cred, | |
4058 | }; | |
1da177e4 LT |
4059 | struct nfs4_lock_state *lsp; |
4060 | int status; | |
4061 | ||
911d1aaf | 4062 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
4063 | status = nfs4_set_lock_state(state, request); |
4064 | if (status != 0) | |
4065 | goto out; | |
4066 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 4067 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4068 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 4069 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
4070 | switch (status) { |
4071 | case 0: | |
4072 | request->fl_type = F_UNLCK; | |
4073 | break; | |
4074 | case -NFS4ERR_DENIED: | |
4075 | status = 0; | |
1da177e4 | 4076 | } |
70cc6487 | 4077 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 4078 | out: |
1da177e4 LT |
4079 | return status; |
4080 | } | |
4081 | ||
4082 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4083 | { | |
4084 | struct nfs4_exception exception = { }; | |
4085 | int err; | |
4086 | ||
4087 | do { | |
4088 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
4089 | _nfs4_proc_getlk(state, cmd, request), | |
4090 | &exception); | |
4091 | } while (exception.retry); | |
4092 | return err; | |
4093 | } | |
4094 | ||
4095 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
4096 | { | |
4097 | int res = 0; | |
4098 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
4099 | case FL_POSIX: | |
4100 | res = posix_lock_file_wait(file, fl); | |
4101 | break; | |
4102 | case FL_FLOCK: | |
4103 | res = flock_lock_file_wait(file, fl); | |
4104 | break; | |
4105 | default: | |
4106 | BUG(); | |
4107 | } | |
1da177e4 LT |
4108 | return res; |
4109 | } | |
4110 | ||
faf5f49c | 4111 | struct nfs4_unlockdata { |
911d1aaf TM |
4112 | struct nfs_locku_args arg; |
4113 | struct nfs_locku_res res; | |
faf5f49c TM |
4114 | struct nfs4_lock_state *lsp; |
4115 | struct nfs_open_context *ctx; | |
911d1aaf TM |
4116 | struct file_lock fl; |
4117 | const struct nfs_server *server; | |
26e976a8 | 4118 | unsigned long timestamp; |
faf5f49c TM |
4119 | }; |
4120 | ||
911d1aaf TM |
4121 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
4122 | struct nfs_open_context *ctx, | |
4123 | struct nfs4_lock_state *lsp, | |
4124 | struct nfs_seqid *seqid) | |
4125 | { | |
4126 | struct nfs4_unlockdata *p; | |
4127 | struct inode *inode = lsp->ls_state->inode; | |
4128 | ||
8535b2be | 4129 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
4130 | if (p == NULL) |
4131 | return NULL; | |
4132 | p->arg.fh = NFS_FH(inode); | |
4133 | p->arg.fl = &p->fl; | |
4134 | p->arg.seqid = seqid; | |
c1d51931 | 4135 | p->res.seqid = seqid; |
911d1aaf TM |
4136 | p->arg.stateid = &lsp->ls_stateid; |
4137 | p->lsp = lsp; | |
4138 | atomic_inc(&lsp->ls_count); | |
4139 | /* Ensure we don't close file until we're done freeing locks! */ | |
4140 | p->ctx = get_nfs_open_context(ctx); | |
4141 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4142 | p->server = NFS_SERVER(inode); | |
4143 | return p; | |
4144 | } | |
4145 | ||
06f814a3 | 4146 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 4147 | { |
963d8fe5 | 4148 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 4149 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
4150 | nfs4_put_lock_state(calldata->lsp); |
4151 | put_nfs_open_context(calldata->ctx); | |
4152 | kfree(calldata); | |
faf5f49c TM |
4153 | } |
4154 | ||
963d8fe5 | 4155 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 4156 | { |
963d8fe5 | 4157 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4158 | |
14516c3a TM |
4159 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
4160 | return; | |
faf5f49c TM |
4161 | switch (task->tk_status) { |
4162 | case 0: | |
4163 | memcpy(calldata->lsp->ls_stateid.data, | |
911d1aaf | 4164 | calldata->res.stateid.data, |
faf5f49c | 4165 | sizeof(calldata->lsp->ls_stateid.data)); |
26e976a8 | 4166 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 4167 | break; |
9e33bed5 TM |
4168 | case -NFS4ERR_BAD_STATEID: |
4169 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
4170 | case -NFS4ERR_STALE_STATEID: |
4171 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
4172 | break; |
4173 | default: | |
9e33bed5 | 4174 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
d00c5d43 | 4175 | rpc_restart_call_prepare(task); |
faf5f49c | 4176 | } |
faf5f49c TM |
4177 | } |
4178 | ||
4ce70ada | 4179 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 4180 | { |
4ce70ada | 4181 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4182 | |
911d1aaf | 4183 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c TM |
4184 | return; |
4185 | if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) { | |
963d8fe5 TM |
4186 | /* Note: exit _without_ running nfs4_locku_done */ |
4187 | task->tk_action = NULL; | |
faf5f49c TM |
4188 | return; |
4189 | } | |
26e976a8 | 4190 | calldata->timestamp = jiffies; |
035168ab | 4191 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 4192 | &calldata->arg.seq_args, |
9d12b216 | 4193 | &calldata->res.seq_res, task)) |
a893693c | 4194 | return; |
5138fde0 | 4195 | rpc_call_start(task); |
faf5f49c TM |
4196 | } |
4197 | ||
963d8fe5 | 4198 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 4199 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 4200 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 4201 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
4202 | }; |
4203 | ||
a5d16a4d TM |
4204 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
4205 | struct nfs_open_context *ctx, | |
4206 | struct nfs4_lock_state *lsp, | |
4207 | struct nfs_seqid *seqid) | |
4208 | { | |
4209 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
4210 | struct rpc_message msg = { |
4211 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
4212 | .rpc_cred = ctx->cred, | |
4213 | }; | |
c970aa85 TM |
4214 | struct rpc_task_setup task_setup_data = { |
4215 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 4216 | .rpc_message = &msg, |
c970aa85 | 4217 | .callback_ops = &nfs4_locku_ops, |
101070ca | 4218 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4219 | .flags = RPC_TASK_ASYNC, |
4220 | }; | |
a5d16a4d | 4221 | |
137d6aca FF |
4222 | /* Ensure this is an unlock - when canceling a lock, the |
4223 | * canceled lock is passed in, and it won't be an unlock. | |
4224 | */ | |
4225 | fl->fl_type = F_UNLCK; | |
4226 | ||
a5d16a4d TM |
4227 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
4228 | if (data == NULL) { | |
4229 | nfs_free_seqid(seqid); | |
4230 | return ERR_PTR(-ENOMEM); | |
4231 | } | |
4232 | ||
9d12b216 | 4233 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4234 | msg.rpc_argp = &data->arg; |
4235 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4236 | task_setup_data.callback_data = data; |
4237 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
4238 | } |
4239 | ||
faf5f49c TM |
4240 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
4241 | { | |
19e03c57 | 4242 | struct nfs_inode *nfsi = NFS_I(state->inode); |
911d1aaf | 4243 | struct nfs_seqid *seqid; |
1da177e4 | 4244 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
4245 | struct rpc_task *task; |
4246 | int status = 0; | |
536ff0f8 | 4247 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 4248 | |
8d0a8a9d | 4249 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
4250 | /* Unlock _before_ we do the RPC call */ |
4251 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
4252 | down_read(&nfsi->rwsem); |
4253 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
4254 | up_read(&nfsi->rwsem); | |
9b073574 | 4255 | goto out; |
19e03c57 TM |
4256 | } |
4257 | up_read(&nfsi->rwsem); | |
8d0a8a9d | 4258 | if (status != 0) |
9b073574 TM |
4259 | goto out; |
4260 | /* Is this a delegated lock? */ | |
4261 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
4262 | goto out; | |
8d0a8a9d | 4263 | lsp = request->fl_u.nfs4_fl.owner; |
8535b2be | 4264 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 4265 | status = -ENOMEM; |
911d1aaf | 4266 | if (seqid == NULL) |
9b073574 | 4267 | goto out; |
cd3758e3 | 4268 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
4269 | status = PTR_ERR(task); |
4270 | if (IS_ERR(task)) | |
9b073574 | 4271 | goto out; |
a5d16a4d | 4272 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 4273 | rpc_put_task(task); |
9b073574 | 4274 | out: |
536ff0f8 | 4275 | request->fl_flags = fl_flags; |
1da177e4 LT |
4276 | return status; |
4277 | } | |
4278 | ||
a5d16a4d TM |
4279 | struct nfs4_lockdata { |
4280 | struct nfs_lock_args arg; | |
4281 | struct nfs_lock_res res; | |
4282 | struct nfs4_lock_state *lsp; | |
4283 | struct nfs_open_context *ctx; | |
4284 | struct file_lock fl; | |
26e976a8 | 4285 | unsigned long timestamp; |
a5d16a4d TM |
4286 | int rpc_status; |
4287 | int cancelled; | |
66179efe | 4288 | struct nfs_server *server; |
a5d16a4d TM |
4289 | }; |
4290 | ||
4291 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
4292 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
4293 | gfp_t gfp_mask) | |
1da177e4 | 4294 | { |
a5d16a4d TM |
4295 | struct nfs4_lockdata *p; |
4296 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 4297 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 4298 | |
8535b2be | 4299 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
4300 | if (p == NULL) |
4301 | return NULL; | |
4302 | ||
4303 | p->arg.fh = NFS_FH(inode); | |
4304 | p->arg.fl = &p->fl; | |
8535b2be | 4305 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4306 | if (p->arg.open_seqid == NULL) |
4307 | goto out_free; | |
8535b2be | 4308 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4309 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4310 | goto out_free_seqid; |
a5d16a4d | 4311 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4312 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 4313 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4314 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 4315 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4316 | p->lsp = lsp; |
66179efe | 4317 | p->server = server; |
a5d16a4d TM |
4318 | atomic_inc(&lsp->ls_count); |
4319 | p->ctx = get_nfs_open_context(ctx); | |
4320 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4321 | return p; | |
2f74c0a0 TM |
4322 | out_free_seqid: |
4323 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4324 | out_free: |
4325 | kfree(p); | |
4326 | return NULL; | |
4327 | } | |
4328 | ||
4329 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4330 | { | |
4331 | struct nfs4_lockdata *data = calldata; | |
4332 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4333 | |
3110ff80 | 4334 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
4335 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
4336 | return; | |
a5d16a4d TM |
4337 | /* Do we need to do an open_to_lock_owner? */ |
4338 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 TM |
4339 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
4340 | return; | |
a5d16a4d TM |
4341 | data->arg.open_stateid = &state->stateid; |
4342 | data->arg.new_lock_owner = 1; | |
c1d51931 | 4343 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4344 | } else |
4345 | data->arg.new_lock_owner = 0; | |
26e976a8 | 4346 | data->timestamp = jiffies; |
035168ab TM |
4347 | if (nfs4_setup_sequence(data->server, |
4348 | &data->arg.seq_args, | |
9d12b216 | 4349 | &data->res.seq_res, task)) |
66179efe | 4350 | return; |
5138fde0 | 4351 | rpc_call_start(task); |
3110ff80 | 4352 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
a5d16a4d TM |
4353 | } |
4354 | ||
b257957e AB |
4355 | static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata) |
4356 | { | |
4357 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
4358 | nfs4_lock_prepare(task, calldata); | |
4359 | } | |
4360 | ||
a5d16a4d TM |
4361 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4362 | { | |
4363 | struct nfs4_lockdata *data = calldata; | |
4364 | ||
3110ff80 | 4365 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4366 | |
14516c3a TM |
4367 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4368 | return; | |
66179efe | 4369 | |
a5d16a4d | 4370 | data->rpc_status = task->tk_status; |
a5d16a4d | 4371 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4372 | if (data->rpc_status == 0) |
4373 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4374 | else | |
4375 | goto out; | |
4376 | } | |
4377 | if (data->rpc_status == 0) { | |
4378 | memcpy(data->lsp->ls_stateid.data, data->res.stateid.data, | |
4379 | sizeof(data->lsp->ls_stateid.data)); | |
4380 | data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; | |
3d4ff43d | 4381 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 4382 | } |
a5d16a4d | 4383 | out: |
3110ff80 | 4384 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4385 | } |
4386 | ||
4387 | static void nfs4_lock_release(void *calldata) | |
4388 | { | |
4389 | struct nfs4_lockdata *data = calldata; | |
4390 | ||
3110ff80 | 4391 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4392 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4393 | if (data->cancelled != 0) { |
4394 | struct rpc_task *task; | |
4395 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4396 | data->arg.lock_seqid); | |
4397 | if (!IS_ERR(task)) | |
bf294b41 | 4398 | rpc_put_task_async(task); |
3110ff80 | 4399 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4400 | } else |
4401 | nfs_free_seqid(data->arg.lock_seqid); | |
4402 | nfs4_put_lock_state(data->lsp); | |
4403 | put_nfs_open_context(data->ctx); | |
4404 | kfree(data); | |
3110ff80 | 4405 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4406 | } |
4407 | ||
4408 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4409 | .rpc_call_prepare = nfs4_lock_prepare, | |
4410 | .rpc_call_done = nfs4_lock_done, | |
4411 | .rpc_release = nfs4_lock_release, | |
4412 | }; | |
4413 | ||
b257957e AB |
4414 | static const struct rpc_call_ops nfs4_recover_lock_ops = { |
4415 | .rpc_call_prepare = nfs4_recover_lock_prepare, | |
4416 | .rpc_call_done = nfs4_lock_done, | |
4417 | .rpc_release = nfs4_lock_release, | |
4418 | }; | |
4419 | ||
2bee72a6 TM |
4420 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4421 | { | |
2bee72a6 TM |
4422 | switch (error) { |
4423 | case -NFS4ERR_ADMIN_REVOKED: | |
4424 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 4425 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 TM |
4426 | if (new_lock_owner != 0 || |
4427 | (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0) | |
ecac799a | 4428 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
4429 | break; |
4430 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 4431 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
4432 | case -NFS4ERR_EXPIRED: |
4433 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
4434 | }; |
4435 | } | |
4436 | ||
afe6c27c | 4437 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4438 | { |
4439 | struct nfs4_lockdata *data; | |
4440 | struct rpc_task *task; | |
5138fde0 TM |
4441 | struct rpc_message msg = { |
4442 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4443 | .rpc_cred = state->owner->so_cred, | |
4444 | }; | |
c970aa85 TM |
4445 | struct rpc_task_setup task_setup_data = { |
4446 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4447 | .rpc_message = &msg, |
c970aa85 | 4448 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4449 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4450 | .flags = RPC_TASK_ASYNC, |
4451 | }; | |
a5d16a4d TM |
4452 | int ret; |
4453 | ||
3110ff80 | 4454 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4455 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4456 | fl->fl_u.nfs4_fl.owner, |
4457 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4458 | if (data == NULL) |
4459 | return -ENOMEM; | |
4460 | if (IS_SETLKW(cmd)) | |
4461 | data->arg.block = 1; | |
b257957e AB |
4462 | if (recovery_type > NFS_LOCK_NEW) { |
4463 | if (recovery_type == NFS_LOCK_RECLAIM) | |
afe6c27c | 4464 | data->arg.reclaim = NFS_LOCK_RECLAIM; |
b257957e AB |
4465 | task_setup_data.callback_ops = &nfs4_recover_lock_ops; |
4466 | } | |
9d12b216 | 4467 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4468 | msg.rpc_argp = &data->arg; |
4469 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4470 | task_setup_data.callback_data = data; |
4471 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 4472 | if (IS_ERR(task)) |
a5d16a4d | 4473 | return PTR_ERR(task); |
a5d16a4d TM |
4474 | ret = nfs4_wait_for_completion_rpc_task(task); |
4475 | if (ret == 0) { | |
4476 | ret = data->rpc_status; | |
2bee72a6 TM |
4477 | if (ret) |
4478 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4479 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4480 | } else |
4481 | data->cancelled = 1; | |
e6b3c4db | 4482 | rpc_put_task(task); |
3110ff80 | 4483 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4484 | return ret; |
1da177e4 LT |
4485 | } |
4486 | ||
4487 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4488 | { | |
202b50dc TM |
4489 | struct nfs_server *server = NFS_SERVER(state->inode); |
4490 | struct nfs4_exception exception = { }; | |
4491 | int err; | |
4492 | ||
4493 | do { | |
42a2d13e TM |
4494 | /* Cache the lock if possible... */ |
4495 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4496 | return 0; | |
afe6c27c | 4497 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 4498 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
4499 | break; |
4500 | nfs4_handle_exception(server, err, &exception); | |
4501 | } while (exception.retry); | |
4502 | return err; | |
1da177e4 LT |
4503 | } |
4504 | ||
4505 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4506 | { | |
202b50dc TM |
4507 | struct nfs_server *server = NFS_SERVER(state->inode); |
4508 | struct nfs4_exception exception = { }; | |
4509 | int err; | |
4510 | ||
6bfc93ef TM |
4511 | err = nfs4_set_lock_state(state, request); |
4512 | if (err != 0) | |
4513 | return err; | |
202b50dc | 4514 | do { |
42a2d13e TM |
4515 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4516 | return 0; | |
afe6c27c | 4517 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
4518 | switch (err) { |
4519 | default: | |
4520 | goto out; | |
4521 | case -NFS4ERR_GRACE: | |
4522 | case -NFS4ERR_DELAY: | |
4523 | nfs4_handle_exception(server, err, &exception); | |
4524 | err = 0; | |
4525 | } | |
202b50dc | 4526 | } while (exception.retry); |
a9ed2e25 | 4527 | out: |
202b50dc | 4528 | return err; |
1da177e4 LT |
4529 | } |
4530 | ||
f062eb6c | 4531 | #if defined(CONFIG_NFS_V4_1) |
b01dd1d8 | 4532 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 4533 | { |
b01dd1d8 BS |
4534 | int status, ret = NFS_OK; |
4535 | struct nfs4_lock_state *lsp; | |
f062eb6c BS |
4536 | struct nfs_server *server = NFS_SERVER(state->inode); |
4537 | ||
b01dd1d8 BS |
4538 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
4539 | if (lsp->ls_flags & NFS_LOCK_INITIALIZED) { | |
4540 | status = nfs41_test_stateid(server, &lsp->ls_stateid); | |
4541 | if (status != NFS_OK) { | |
4542 | nfs41_free_stateid(server, &lsp->ls_stateid); | |
4543 | lsp->ls_flags &= ~NFS_LOCK_INITIALIZED; | |
4544 | ret = status; | |
4545 | } | |
4546 | } | |
4547 | }; | |
4548 | ||
4549 | return ret; | |
4550 | } | |
4551 | ||
4552 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4553 | { | |
4554 | int status = NFS_OK; | |
4555 | ||
4556 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
4557 | status = nfs41_check_expired_locks(state); | |
f062eb6c | 4558 | if (status == NFS_OK) |
b01dd1d8 | 4559 | return status; |
f062eb6c BS |
4560 | return nfs4_lock_expired(state, request); |
4561 | } | |
4562 | #endif | |
4563 | ||
1da177e4 LT |
4564 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4565 | { | |
19e03c57 | 4566 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 4567 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 4568 | int status = -ENOLCK; |
1da177e4 | 4569 | |
8e469ebd TM |
4570 | if ((fl_flags & FL_POSIX) && |
4571 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
4572 | goto out; | |
6bfc93ef | 4573 | /* Is this a delegated open? */ |
6bfc93ef TM |
4574 | status = nfs4_set_lock_state(state, request); |
4575 | if (status != 0) | |
4576 | goto out; | |
01c3b861 TM |
4577 | request->fl_flags |= FL_ACCESS; |
4578 | status = do_vfs_lock(request->fl_file, request); | |
4579 | if (status < 0) | |
4580 | goto out; | |
19e03c57 | 4581 | down_read(&nfsi->rwsem); |
01c3b861 | 4582 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 4583 | /* Yes: cache locks! */ |
01c3b861 | 4584 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
4585 | request->fl_flags = fl_flags & ~FL_SLEEP; |
4586 | status = do_vfs_lock(request->fl_file, request); | |
4587 | goto out_unlock; | |
01c3b861 | 4588 | } |
afe6c27c | 4589 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 4590 | if (status != 0) |
01c3b861 | 4591 | goto out_unlock; |
6bfc93ef | 4592 | /* Note: we always want to sleep here! */ |
01c3b861 | 4593 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 4594 | if (do_vfs_lock(request->fl_file, request) < 0) |
a030889a WAA |
4595 | printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " |
4596 | "manager!\n", __func__); | |
01c3b861 | 4597 | out_unlock: |
19e03c57 | 4598 | up_read(&nfsi->rwsem); |
01c3b861 TM |
4599 | out: |
4600 | request->fl_flags = fl_flags; | |
1da177e4 LT |
4601 | return status; |
4602 | } | |
4603 | ||
4604 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4605 | { | |
4606 | struct nfs4_exception exception = { }; | |
4607 | int err; | |
4608 | ||
4609 | do { | |
965b5d67 TM |
4610 | err = _nfs4_proc_setlk(state, cmd, request); |
4611 | if (err == -NFS4ERR_DENIED) | |
4612 | err = -EAGAIN; | |
1da177e4 | 4613 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 4614 | err, &exception); |
1da177e4 LT |
4615 | } while (exception.retry); |
4616 | return err; | |
4617 | } | |
4618 | ||
4619 | static int | |
4620 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
4621 | { | |
4622 | struct nfs_open_context *ctx; | |
4623 | struct nfs4_state *state; | |
4624 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
4625 | int status; | |
4626 | ||
4627 | /* verify open state */ | |
cd3758e3 | 4628 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
4629 | state = ctx->state; |
4630 | ||
4631 | if (request->fl_start < 0 || request->fl_end < 0) | |
4632 | return -EINVAL; | |
4633 | ||
d953126a TM |
4634 | if (IS_GETLK(cmd)) { |
4635 | if (state != NULL) | |
4636 | return nfs4_proc_getlk(state, F_GETLK, request); | |
4637 | return 0; | |
4638 | } | |
1da177e4 LT |
4639 | |
4640 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
4641 | return -EINVAL; | |
4642 | ||
d953126a TM |
4643 | if (request->fl_type == F_UNLCK) { |
4644 | if (state != NULL) | |
4645 | return nfs4_proc_unlck(state, cmd, request); | |
4646 | return 0; | |
4647 | } | |
1da177e4 | 4648 | |
d953126a TM |
4649 | if (state == NULL) |
4650 | return -ENOLCK; | |
1da177e4 LT |
4651 | do { |
4652 | status = nfs4_proc_setlk(state, cmd, request); | |
4653 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
4654 | break; | |
4655 | timeout = nfs4_set_lock_task_retry(timeout); | |
4656 | status = -ERESTARTSYS; | |
4657 | if (signalled()) | |
4658 | break; | |
4659 | } while(status < 0); | |
1da177e4 LT |
4660 | return status; |
4661 | } | |
4662 | ||
888e694c TM |
4663 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
4664 | { | |
4665 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4666 | struct nfs4_exception exception = { }; | |
4667 | int err; | |
4668 | ||
4669 | err = nfs4_set_lock_state(state, fl); | |
4670 | if (err != 0) | |
4671 | goto out; | |
4672 | do { | |
afe6c27c | 4673 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
d5122201 TM |
4674 | switch (err) { |
4675 | default: | |
a030889a WAA |
4676 | printk(KERN_ERR "NFS: %s: unhandled error " |
4677 | "%d.\n", __func__, err); | |
d5122201 | 4678 | case 0: |
965b5d67 | 4679 | case -ESTALE: |
d5122201 TM |
4680 | goto out; |
4681 | case -NFS4ERR_EXPIRED: | |
0ced63d1 | 4682 | nfs4_schedule_stateid_recovery(server, state); |
d5122201 | 4683 | case -NFS4ERR_STALE_CLIENTID: |
965b5d67 | 4684 | case -NFS4ERR_STALE_STATEID: |
0400a6b0 TM |
4685 | nfs4_schedule_lease_recovery(server->nfs_client); |
4686 | goto out; | |
74e7bb73 RL |
4687 | case -NFS4ERR_BADSESSION: |
4688 | case -NFS4ERR_BADSLOT: | |
4689 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4690 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4691 | case -NFS4ERR_DEADSESSION: | |
0400a6b0 | 4692 | nfs4_schedule_session_recovery(server->nfs_client->cl_session); |
d5122201 | 4693 | goto out; |
965b5d67 TM |
4694 | case -ERESTARTSYS: |
4695 | /* | |
4696 | * The show must go on: exit, but mark the | |
4697 | * stateid as needing recovery. | |
4698 | */ | |
4699 | case -NFS4ERR_ADMIN_REVOKED: | |
4700 | case -NFS4ERR_BAD_STATEID: | |
4701 | case -NFS4ERR_OPENMODE: | |
0400a6b0 | 4702 | nfs4_schedule_stateid_recovery(server, state); |
965b5d67 TM |
4703 | err = 0; |
4704 | goto out; | |
168667c4 TM |
4705 | case -EKEYEXPIRED: |
4706 | /* | |
4707 | * User RPCSEC_GSS context has expired. | |
4708 | * We cannot recover this stateid now, so | |
4709 | * skip it and allow recovery thread to | |
4710 | * proceed. | |
4711 | */ | |
4712 | err = 0; | |
4713 | goto out; | |
965b5d67 TM |
4714 | case -ENOMEM: |
4715 | case -NFS4ERR_DENIED: | |
4716 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
4717 | err = 0; | |
4718 | goto out; | |
d5122201 TM |
4719 | case -NFS4ERR_DELAY: |
4720 | break; | |
4721 | } | |
888e694c TM |
4722 | err = nfs4_handle_exception(server, err, &exception); |
4723 | } while (exception.retry); | |
4724 | out: | |
4725 | return err; | |
4726 | } | |
6b3b5496 | 4727 | |
d3c7b7cc TM |
4728 | static void nfs4_release_lockowner_release(void *calldata) |
4729 | { | |
4730 | kfree(calldata); | |
4731 | } | |
4732 | ||
4733 | const struct rpc_call_ops nfs4_release_lockowner_ops = { | |
4734 | .rpc_release = nfs4_release_lockowner_release, | |
4735 | }; | |
4736 | ||
4737 | void nfs4_release_lockowner(const struct nfs4_lock_state *lsp) | |
4738 | { | |
4739 | struct nfs_server *server = lsp->ls_state->owner->so_server; | |
4740 | struct nfs_release_lockowner_args *args; | |
4741 | struct rpc_message msg = { | |
4742 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
4743 | }; | |
4744 | ||
4745 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
4746 | return; | |
4747 | args = kmalloc(sizeof(*args), GFP_NOFS); | |
4748 | if (!args) | |
4749 | return; | |
4750 | args->lock_owner.clientid = server->nfs_client->cl_clientid; | |
48c22eb2 | 4751 | args->lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4752 | args->lock_owner.s_dev = server->s_dev; |
d3c7b7cc TM |
4753 | msg.rpc_argp = args; |
4754 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, args); | |
4755 | } | |
4756 | ||
aa1870af BF |
4757 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
4758 | ||
64c2ce8b AK |
4759 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
4760 | const void *buf, size_t buflen, | |
4761 | int flags, int type) | |
6b3b5496 | 4762 | { |
64c2ce8b AK |
4763 | if (strcmp(key, "") != 0) |
4764 | return -EINVAL; | |
4b580ee3 | 4765 | |
64c2ce8b | 4766 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4767 | } |
4768 | ||
64c2ce8b AK |
4769 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
4770 | void *buf, size_t buflen, int type) | |
6b3b5496 | 4771 | { |
64c2ce8b AK |
4772 | if (strcmp(key, "") != 0) |
4773 | return -EINVAL; | |
aa1870af | 4774 | |
64c2ce8b | 4775 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4776 | } |
4777 | ||
64c2ce8b AK |
4778 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
4779 | size_t list_len, const char *name, | |
4780 | size_t name_len, int type) | |
6b3b5496 | 4781 | { |
64c2ce8b | 4782 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 4783 | |
096455a2 BF |
4784 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
4785 | return 0; | |
64c2ce8b AK |
4786 | |
4787 | if (list && len <= list_len) | |
4788 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 4789 | return len; |
6b3b5496 BF |
4790 | } |
4791 | ||
533eb461 AA |
4792 | /* |
4793 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
4794 | */ | |
69aaaae1 TM |
4795 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
4796 | { | |
533eb461 AA |
4797 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
4798 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
4799 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
4800 | (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL))) | |
69aaaae1 TM |
4801 | return; |
4802 | ||
4803 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
4804 | NFS_ATTR_FATTR_NLINK; | |
4805 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; | |
4806 | fattr->nlink = 2; | |
4807 | } | |
4808 | ||
56659e99 | 4809 | int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, |
7aaa0b3b | 4810 | struct nfs4_fs_locations *fs_locations, struct page *page) |
683b57b4 TM |
4811 | { |
4812 | struct nfs_server *server = NFS_SERVER(dir); | |
4813 | u32 bitmask[2] = { | |
361e624f | 4814 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
4815 | }; |
4816 | struct nfs4_fs_locations_arg args = { | |
4817 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 4818 | .name = name, |
683b57b4 TM |
4819 | .page = page, |
4820 | .bitmask = bitmask, | |
4821 | }; | |
22958463 BH |
4822 | struct nfs4_fs_locations_res res = { |
4823 | .fs_locations = fs_locations, | |
4824 | }; | |
683b57b4 TM |
4825 | struct rpc_message msg = { |
4826 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
4827 | .rpc_argp = &args, | |
22958463 | 4828 | .rpc_resp = &res, |
683b57b4 TM |
4829 | }; |
4830 | int status; | |
4831 | ||
3110ff80 | 4832 | dprintk("%s: start\n", __func__); |
533eb461 AA |
4833 | |
4834 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
4835 | * is not supported */ | |
4836 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
4837 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
4838 | else | |
4839 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
4840 | ||
c228fd3a | 4841 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 4842 | fs_locations->server = server; |
830b8e33 | 4843 | fs_locations->nlocations = 0; |
7c513058 | 4844 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 4845 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
4846 | return status; |
4847 | } | |
4848 | ||
5a5ea0d4 BS |
4849 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) |
4850 | { | |
4851 | int status; | |
4852 | struct nfs4_secinfo_arg args = { | |
4853 | .dir_fh = NFS_FH(dir), | |
4854 | .name = name, | |
4855 | }; | |
4856 | struct nfs4_secinfo_res res = { | |
4857 | .flavors = flavors, | |
4858 | }; | |
4859 | struct rpc_message msg = { | |
4860 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
4861 | .rpc_argp = &args, | |
4862 | .rpc_resp = &res, | |
4863 | }; | |
4864 | ||
4865 | dprintk("NFS call secinfo %s\n", name->name); | |
4866 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); | |
4867 | dprintk("NFS reply secinfo: %d\n", status); | |
4868 | return status; | |
4869 | } | |
4870 | ||
4871 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) | |
4872 | { | |
4873 | struct nfs4_exception exception = { }; | |
4874 | int err; | |
4875 | do { | |
4876 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
4877 | _nfs4_proc_secinfo(dir, name, flavors), | |
4878 | &exception); | |
4879 | } while (exception.retry); | |
4880 | return err; | |
4881 | } | |
4882 | ||
557134a3 | 4883 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
4884 | /* |
4885 | * Check the exchange flags returned by the server for invalid flags, having | |
4886 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
4887 | * DS flags set. | |
4888 | */ | |
4889 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
4890 | { | |
4891 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
4892 | goto out_inval; | |
4893 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
4894 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
4895 | goto out_inval; | |
4896 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
4897 | goto out_inval; | |
4898 | return NFS_OK; | |
4899 | out_inval: | |
4900 | return -NFS4ERR_INVAL; | |
4901 | } | |
4902 | ||
78fe0f41 WAA |
4903 | static bool |
4904 | nfs41_same_server_scope(struct server_scope *a, struct server_scope *b) | |
4905 | { | |
4906 | if (a->server_scope_sz == b->server_scope_sz && | |
4907 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
4908 | return true; | |
4909 | ||
4910 | return false; | |
4911 | } | |
4912 | ||
99fe60d0 BH |
4913 | /* |
4914 | * nfs4_proc_exchange_id() | |
4915 | * | |
4916 | * Since the clientid has expired, all compounds using sessions | |
4917 | * associated with the stale clientid will be returning | |
4918 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
4919 | * be in some phase of session reset. | |
4920 | */ | |
4d643d1d | 4921 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
4922 | { |
4923 | nfs4_verifier verifier; | |
4924 | struct nfs41_exchange_id_args args = { | |
4925 | .client = clp, | |
357f54d6 | 4926 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, |
99fe60d0 BH |
4927 | }; |
4928 | struct nfs41_exchange_id_res res = { | |
4929 | .client = clp, | |
4930 | }; | |
4931 | int status; | |
4932 | struct rpc_message msg = { | |
4933 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
4934 | .rpc_argp = &args, | |
4935 | .rpc_resp = &res, | |
4936 | .rpc_cred = cred, | |
4937 | }; | |
4938 | __be32 *p; | |
4939 | ||
4940 | dprintk("--> %s\n", __func__); | |
4941 | BUG_ON(clp == NULL); | |
a7b72103 | 4942 | |
99fe60d0 BH |
4943 | p = (u32 *)verifier.data; |
4944 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); | |
4945 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
4946 | args.verifier = &verifier; | |
4947 | ||
c7a360b0 AA |
4948 | args.id_len = scnprintf(args.id, sizeof(args.id), |
4949 | "%s/%s.%s/%u", | |
4950 | clp->cl_ipaddr, | |
4951 | init_utsname()->nodename, | |
4952 | init_utsname()->domainname, | |
4953 | clp->cl_rpcclient->cl_auth->au_flavor); | |
99fe60d0 | 4954 | |
78fe0f41 | 4955 | res.server_scope = kzalloc(sizeof(struct server_scope), GFP_KERNEL); |
9edbd953 WAA |
4956 | if (unlikely(!res.server_scope)) { |
4957 | status = -ENOMEM; | |
4958 | goto out; | |
4959 | } | |
78fe0f41 | 4960 | |
7d2ed9ac WAA |
4961 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_KERNEL); |
4962 | if (unlikely(!res.impl_id)) { | |
4963 | status = -ENOMEM; | |
4964 | goto out_server_scope; | |
4965 | } | |
4966 | ||
1bd714f2 | 4967 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c7a360b0 AA |
4968 | if (!status) |
4969 | status = nfs4_check_cl_exchange_flags(clp->cl_exchange_flags); | |
78fe0f41 | 4970 | |
7d2ed9ac WAA |
4971 | if (!status) { |
4972 | /* use the most recent implementation id */ | |
4973 | kfree(clp->impl_id); | |
4974 | clp->impl_id = res.impl_id; | |
4975 | } else | |
4976 | kfree(res.impl_id); | |
4977 | ||
78fe0f41 WAA |
4978 | if (!status) { |
4979 | if (clp->server_scope && | |
4980 | !nfs41_same_server_scope(clp->server_scope, | |
4981 | res.server_scope)) { | |
4982 | dprintk("%s: server_scope mismatch detected\n", | |
4983 | __func__); | |
4984 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
4985 | kfree(clp->server_scope); | |
4986 | clp->server_scope = NULL; | |
4987 | } | |
4988 | ||
9edbd953 | 4989 | if (!clp->server_scope) { |
78fe0f41 | 4990 | clp->server_scope = res.server_scope; |
9edbd953 WAA |
4991 | goto out; |
4992 | } | |
78fe0f41 | 4993 | } |
7d2ed9ac WAA |
4994 | |
4995 | out_server_scope: | |
9edbd953 WAA |
4996 | kfree(res.server_scope); |
4997 | out: | |
7d2ed9ac WAA |
4998 | if (clp->impl_id) |
4999 | dprintk("%s: Server Implementation ID: " | |
5000 | "domain: %s, name: %s, date: %llu,%u\n", | |
5001 | __func__, clp->impl_id->domain, clp->impl_id->name, | |
5002 | clp->impl_id->date.seconds, | |
5003 | clp->impl_id->date.nseconds); | |
99fe60d0 BH |
5004 | dprintk("<-- %s status= %d\n", __func__, status); |
5005 | return status; | |
5006 | } | |
5007 | ||
2050f0cc AA |
5008 | struct nfs4_get_lease_time_data { |
5009 | struct nfs4_get_lease_time_args *args; | |
5010 | struct nfs4_get_lease_time_res *res; | |
5011 | struct nfs_client *clp; | |
5012 | }; | |
5013 | ||
5014 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
5015 | void *calldata) | |
5016 | { | |
5017 | int ret; | |
5018 | struct nfs4_get_lease_time_data *data = | |
5019 | (struct nfs4_get_lease_time_data *)calldata; | |
5020 | ||
5021 | dprintk("--> %s\n", __func__); | |
689cf5c1 | 5022 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
2050f0cc AA |
5023 | /* just setup sequence, do not trigger session recovery |
5024 | since we're invoked within one */ | |
5025 | ret = nfs41_setup_sequence(data->clp->cl_session, | |
689cf5c1 | 5026 | &data->args->la_seq_args, |
9d12b216 | 5027 | &data->res->lr_seq_res, task); |
2050f0cc AA |
5028 | |
5029 | BUG_ON(ret == -EAGAIN); | |
5030 | rpc_call_start(task); | |
5031 | dprintk("<-- %s\n", __func__); | |
5032 | } | |
5033 | ||
5034 | /* | |
5035 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
5036 | * from sequence operation or clientid errors. | |
5037 | */ | |
5038 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
5039 | { | |
5040 | struct nfs4_get_lease_time_data *data = | |
5041 | (struct nfs4_get_lease_time_data *)calldata; | |
5042 | ||
5043 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5044 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
5045 | return; | |
2050f0cc AA |
5046 | switch (task->tk_status) { |
5047 | case -NFS4ERR_DELAY: | |
5048 | case -NFS4ERR_GRACE: | |
5049 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
5050 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
5051 | task->tk_status = 0; | |
a8a4ae3a AA |
5052 | /* fall through */ |
5053 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 5054 | rpc_restart_call_prepare(task); |
2050f0cc AA |
5055 | return; |
5056 | } | |
2050f0cc AA |
5057 | dprintk("<-- %s\n", __func__); |
5058 | } | |
5059 | ||
5060 | struct rpc_call_ops nfs4_get_lease_time_ops = { | |
5061 | .rpc_call_prepare = nfs4_get_lease_time_prepare, | |
5062 | .rpc_call_done = nfs4_get_lease_time_done, | |
5063 | }; | |
5064 | ||
5065 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
5066 | { | |
5067 | struct rpc_task *task; | |
5068 | struct nfs4_get_lease_time_args args; | |
5069 | struct nfs4_get_lease_time_res res = { | |
5070 | .lr_fsinfo = fsinfo, | |
5071 | }; | |
5072 | struct nfs4_get_lease_time_data data = { | |
5073 | .args = &args, | |
5074 | .res = &res, | |
5075 | .clp = clp, | |
5076 | }; | |
5077 | struct rpc_message msg = { | |
5078 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
5079 | .rpc_argp = &args, | |
5080 | .rpc_resp = &res, | |
5081 | }; | |
5082 | struct rpc_task_setup task_setup = { | |
5083 | .rpc_client = clp->cl_rpcclient, | |
5084 | .rpc_message = &msg, | |
5085 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
5086 | .callback_data = &data, |
5087 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
5088 | }; |
5089 | int status; | |
5090 | ||
9d12b216 | 5091 | nfs41_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
2050f0cc AA |
5092 | dprintk("--> %s\n", __func__); |
5093 | task = rpc_run_task(&task_setup); | |
5094 | ||
5095 | if (IS_ERR(task)) | |
5096 | status = PTR_ERR(task); | |
5097 | else { | |
5098 | status = task->tk_status; | |
5099 | rpc_put_task(task); | |
5100 | } | |
5101 | dprintk("<-- %s return %d\n", __func__, status); | |
5102 | ||
5103 | return status; | |
5104 | } | |
5105 | ||
b73dafa7 RL |
5106 | /* |
5107 | * Reset a slot table | |
5108 | */ | |
104aeba4 AA |
5109 | static int nfs4_reset_slot_table(struct nfs4_slot_table *tbl, u32 max_reqs, |
5110 | int ivalue) | |
ac72b7b3 | 5111 | { |
104aeba4 | 5112 | struct nfs4_slot *new = NULL; |
b73dafa7 | 5113 | int i; |
ac72b7b3 AA |
5114 | int ret = 0; |
5115 | ||
104aeba4 AA |
5116 | dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__, |
5117 | max_reqs, tbl->max_slots); | |
ac72b7b3 | 5118 | |
104aeba4 AA |
5119 | /* Does the newly negotiated max_reqs match the existing slot table? */ |
5120 | if (max_reqs != tbl->max_slots) { | |
5121 | ret = -ENOMEM; | |
5122 | new = kmalloc(max_reqs * sizeof(struct nfs4_slot), | |
8535b2be | 5123 | GFP_NOFS); |
104aeba4 AA |
5124 | if (!new) |
5125 | goto out; | |
5126 | ret = 0; | |
5127 | kfree(tbl->slots); | |
ac72b7b3 AA |
5128 | } |
5129 | spin_lock(&tbl->slot_tbl_lock); | |
104aeba4 AA |
5130 | if (new) { |
5131 | tbl->slots = new; | |
5132 | tbl->max_slots = max_reqs; | |
5133 | } | |
5134 | for (i = 0; i < tbl->max_slots; ++i) | |
b73dafa7 | 5135 | tbl->slots[i].seq_nr = ivalue; |
ac72b7b3 AA |
5136 | spin_unlock(&tbl->slot_tbl_lock); |
5137 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, | |
5138 | tbl, tbl->slots, tbl->max_slots); | |
5139 | out: | |
5140 | dprintk("<-- %s: return %d\n", __func__, ret); | |
5141 | return ret; | |
5142 | } | |
5143 | ||
f8625a6a RL |
5144 | /* Destroy the slot table */ |
5145 | static void nfs4_destroy_slot_tables(struct nfs4_session *session) | |
5146 | { | |
5147 | if (session->fc_slot_table.slots != NULL) { | |
5148 | kfree(session->fc_slot_table.slots); | |
5149 | session->fc_slot_table.slots = NULL; | |
5150 | } | |
5151 | if (session->bc_slot_table.slots != NULL) { | |
5152 | kfree(session->bc_slot_table.slots); | |
5153 | session->bc_slot_table.slots = NULL; | |
5154 | } | |
5155 | return; | |
5156 | } | |
5157 | ||
fc931582 AA |
5158 | /* |
5159 | * Initialize slot table | |
5160 | */ | |
050047ce RL |
5161 | static int nfs4_init_slot_table(struct nfs4_slot_table *tbl, |
5162 | int max_slots, int ivalue) | |
fc931582 | 5163 | { |
fc931582 AA |
5164 | struct nfs4_slot *slot; |
5165 | int ret = -ENOMEM; | |
5166 | ||
5167 | BUG_ON(max_slots > NFS4_MAX_SLOT_TABLE); | |
5168 | ||
050047ce | 5169 | dprintk("--> %s: max_reqs=%u\n", __func__, max_slots); |
fc931582 | 5170 | |
8535b2be | 5171 | slot = kcalloc(max_slots, sizeof(struct nfs4_slot), GFP_NOFS); |
fc931582 AA |
5172 | if (!slot) |
5173 | goto out; | |
fc931582 AA |
5174 | ret = 0; |
5175 | ||
5176 | spin_lock(&tbl->slot_tbl_lock); | |
fc931582 AA |
5177 | tbl->max_slots = max_slots; |
5178 | tbl->slots = slot; | |
45d43c29 | 5179 | tbl->highest_used_slotid = NFS4_NO_SLOT; /* no slot is currently used */ |
fc931582 AA |
5180 | spin_unlock(&tbl->slot_tbl_lock); |
5181 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, | |
5182 | tbl, tbl->slots, tbl->max_slots); | |
5183 | out: | |
5184 | dprintk("<-- %s: return %d\n", __func__, ret); | |
5185 | return ret; | |
fc931582 AA |
5186 | } |
5187 | ||
050047ce | 5188 | /* |
aacd5537 | 5189 | * Initialize or reset the forechannel and backchannel tables |
050047ce | 5190 | */ |
aacd5537 | 5191 | static int nfs4_setup_session_slot_tables(struct nfs4_session *ses) |
050047ce | 5192 | { |
f26468fb | 5193 | struct nfs4_slot_table *tbl; |
aacd5537 | 5194 | int status; |
050047ce | 5195 | |
aacd5537 AA |
5196 | dprintk("--> %s\n", __func__); |
5197 | /* Fore channel */ | |
5198 | tbl = &ses->fc_slot_table; | |
f26468fb | 5199 | if (tbl->slots == NULL) { |
aacd5537 AA |
5200 | status = nfs4_init_slot_table(tbl, ses->fc_attrs.max_reqs, 1); |
5201 | if (status) /* -ENOMEM */ | |
5202 | return status; | |
5203 | } else { | |
5204 | status = nfs4_reset_slot_table(tbl, ses->fc_attrs.max_reqs, 1); | |
f26468fb TM |
5205 | if (status) |
5206 | return status; | |
5207 | } | |
aacd5537 AA |
5208 | /* Back channel */ |
5209 | tbl = &ses->bc_slot_table; | |
f26468fb | 5210 | if (tbl->slots == NULL) { |
aacd5537 | 5211 | status = nfs4_init_slot_table(tbl, ses->bc_attrs.max_reqs, 0); |
f26468fb | 5212 | if (status) |
aacd5537 AA |
5213 | /* Fore and back channel share a connection so get |
5214 | * both slot tables or neither */ | |
5215 | nfs4_destroy_slot_tables(ses); | |
5216 | } else | |
5217 | status = nfs4_reset_slot_table(tbl, ses->bc_attrs.max_reqs, 0); | |
f8625a6a | 5218 | return status; |
557134a3 AA |
5219 | } |
5220 | ||
5221 | struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) | |
5222 | { | |
5223 | struct nfs4_session *session; | |
5224 | struct nfs4_slot_table *tbl; | |
5225 | ||
8535b2be | 5226 | session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); |
557134a3 AA |
5227 | if (!session) |
5228 | return NULL; | |
76db6d95 | 5229 | |
557134a3 | 5230 | tbl = &session->fc_slot_table; |
45d43c29 | 5231 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
557134a3 | 5232 | spin_lock_init(&tbl->slot_tbl_lock); |
689cf5c1 | 5233 | rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table"); |
42acd021 | 5234 | init_completion(&tbl->complete); |
f8625a6a RL |
5235 | |
5236 | tbl = &session->bc_slot_table; | |
45d43c29 | 5237 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
f8625a6a RL |
5238 | spin_lock_init(&tbl->slot_tbl_lock); |
5239 | rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table"); | |
42acd021 | 5240 | init_completion(&tbl->complete); |
f8625a6a | 5241 | |
1055d76d TM |
5242 | session->session_state = 1<<NFS4_SESSION_INITING; |
5243 | ||
557134a3 AA |
5244 | session->clp = clp; |
5245 | return session; | |
5246 | } | |
5247 | ||
5248 | void nfs4_destroy_session(struct nfs4_session *session) | |
5249 | { | |
2446ab60 TM |
5250 | struct rpc_xprt *xprt; |
5251 | ||
5a0ffe54 | 5252 | nfs4_proc_destroy_session(session); |
2446ab60 TM |
5253 | |
5254 | rcu_read_lock(); | |
5255 | xprt = rcu_dereference(session->clp->cl_rpcclient->cl_xprt); | |
5256 | rcu_read_unlock(); | |
5a0ffe54 | 5257 | dprintk("%s Destroy backchannel for xprt %p\n", |
2446ab60 TM |
5258 | __func__, xprt); |
5259 | xprt_destroy_backchannel(xprt, NFS41_BC_MIN_CALLBACKS); | |
f8625a6a | 5260 | nfs4_destroy_slot_tables(session); |
557134a3 AA |
5261 | kfree(session); |
5262 | } | |
5263 | ||
fc931582 AA |
5264 | /* |
5265 | * Initialize the values to be used by the client in CREATE_SESSION | |
5266 | * If nfs4_init_session set the fore channel request and response sizes, | |
5267 | * use them. | |
5268 | * | |
5269 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
5270 | * always set csa_cachethis to FALSE because the current implementation | |
5271 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
5272 | */ | |
5273 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
5274 | { | |
5275 | struct nfs4_session *session = args->client->cl_session; | |
5276 | unsigned int mxrqst_sz = session->fc_attrs.max_rqst_sz, | |
5277 | mxresp_sz = session->fc_attrs.max_resp_sz; | |
5278 | ||
5279 | if (mxrqst_sz == 0) | |
5280 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
5281 | if (mxresp_sz == 0) | |
5282 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
5283 | /* Fore channel attributes */ | |
fc931582 AA |
5284 | args->fc_attrs.max_rqst_sz = mxrqst_sz; |
5285 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 | 5286 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 5287 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
5288 | |
5289 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 5290 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
5291 | __func__, |
5292 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 5293 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
5294 | |
5295 | /* Back channel attributes */ | |
fc931582 AA |
5296 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
5297 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
5298 | args->bc_attrs.max_resp_sz_cached = 0; | |
5299 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
5300 | args->bc_attrs.max_reqs = 1; | |
5301 | ||
5302 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
5303 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
5304 | __func__, | |
5305 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
5306 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
5307 | args->bc_attrs.max_reqs); | |
5308 | } | |
5309 | ||
43c2e885 | 5310 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 5311 | { |
43c2e885 BF |
5312 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
5313 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
5314 | ||
43c2e885 BF |
5315 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
5316 | return -EINVAL; | |
5317 | /* | |
5318 | * Our requested max_ops is the minimum we need; we're not | |
5319 | * prepared to break up compounds into smaller pieces than that. | |
5320 | * So, no point even trying to continue if the server won't | |
5321 | * cooperate: | |
5322 | */ | |
5323 | if (rcvd->max_ops < sent->max_ops) | |
5324 | return -EINVAL; | |
5325 | if (rcvd->max_reqs == 0) | |
5326 | return -EINVAL; | |
b4b9a0c1 VG |
5327 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
5328 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 5329 | return 0; |
8d35301d AA |
5330 | } |
5331 | ||
43c2e885 BF |
5332 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
5333 | { | |
5334 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
5335 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 5336 | |
43c2e885 BF |
5337 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
5338 | return -EINVAL; | |
5339 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
5340 | return -EINVAL; | |
5341 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
5342 | return -EINVAL; | |
5343 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 5344 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 5345 | return -EINVAL; |
b4b9a0c1 | 5346 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 BF |
5347 | return -EINVAL; |
5348 | return 0; | |
5349 | } | |
8d35301d | 5350 | |
8d35301d AA |
5351 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
5352 | struct nfs4_session *session) | |
5353 | { | |
43c2e885 | 5354 | int ret; |
8d35301d | 5355 | |
43c2e885 BF |
5356 | ret = nfs4_verify_fore_channel_attrs(args, session); |
5357 | if (ret) | |
5358 | return ret; | |
5359 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
5360 | } |
5361 | ||
fc931582 AA |
5362 | static int _nfs4_proc_create_session(struct nfs_client *clp) |
5363 | { | |
5364 | struct nfs4_session *session = clp->cl_session; | |
5365 | struct nfs41_create_session_args args = { | |
5366 | .client = clp, | |
5367 | .cb_program = NFS4_CALLBACK, | |
5368 | }; | |
5369 | struct nfs41_create_session_res res = { | |
5370 | .client = clp, | |
5371 | }; | |
5372 | struct rpc_message msg = { | |
5373 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
5374 | .rpc_argp = &args, | |
5375 | .rpc_resp = &res, | |
5376 | }; | |
5377 | int status; | |
5378 | ||
5379 | nfs4_init_channel_attrs(&args); | |
0f91421e | 5380 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 5381 | |
1bd714f2 | 5382 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
fc931582 | 5383 | |
8d35301d AA |
5384 | if (!status) |
5385 | /* Verify the session's negotiated channel_attrs values */ | |
5386 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
5387 | if (!status) { |
5388 | /* Increment the clientid slot sequence id */ | |
5389 | clp->cl_seqid++; | |
5390 | } | |
5391 | ||
5392 | return status; | |
5393 | } | |
5394 | ||
5395 | /* | |
5396 | * Issues a CREATE_SESSION operation to the server. | |
5397 | * It is the responsibility of the caller to verify the session is | |
5398 | * expired before calling this routine. | |
5399 | */ | |
f26468fb | 5400 | int nfs4_proc_create_session(struct nfs_client *clp) |
fc931582 AA |
5401 | { |
5402 | int status; | |
5403 | unsigned *ptr; | |
fc931582 AA |
5404 | struct nfs4_session *session = clp->cl_session; |
5405 | ||
5406 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
5407 | ||
fd954ae1 | 5408 | status = _nfs4_proc_create_session(clp); |
fc931582 AA |
5409 | if (status) |
5410 | goto out; | |
5411 | ||
aacd5537 AA |
5412 | /* Init or reset the session slot tables */ |
5413 | status = nfs4_setup_session_slot_tables(session); | |
5414 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
5415 | if (status) |
5416 | goto out; | |
5417 | ||
5418 | ptr = (unsigned *)&session->sess_id.data[0]; | |
5419 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
5420 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
5421 | out: |
5422 | dprintk("<-- %s\n", __func__); | |
5423 | return status; | |
5424 | } | |
5425 | ||
0f3e66c6 AA |
5426 | /* |
5427 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
5428 | * The caller must serialize access to this routine. | |
5429 | */ | |
5430 | int nfs4_proc_destroy_session(struct nfs4_session *session) | |
5431 | { | |
5432 | int status = 0; | |
5433 | struct rpc_message msg; | |
5434 | ||
5435 | dprintk("--> nfs4_proc_destroy_session\n"); | |
5436 | ||
5437 | /* session is still being setup */ | |
5438 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
5439 | return status; | |
5440 | ||
5441 | msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION]; | |
5442 | msg.rpc_argp = session; | |
5443 | msg.rpc_resp = NULL; | |
5444 | msg.rpc_cred = NULL; | |
1bd714f2 | 5445 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
0f3e66c6 AA |
5446 | |
5447 | if (status) | |
5448 | printk(KERN_WARNING | |
f9fd2d9c | 5449 | "NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
5450 | "Session has been destroyed regardless...\n", status); |
5451 | ||
5452 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
5453 | return status; | |
5454 | } | |
5455 | ||
fccba804 TM |
5456 | int nfs4_init_session(struct nfs_server *server) |
5457 | { | |
5458 | struct nfs_client *clp = server->nfs_client; | |
2449ea2e | 5459 | struct nfs4_session *session; |
68bf05ef | 5460 | unsigned int rsize, wsize; |
fccba804 TM |
5461 | int ret; |
5462 | ||
5463 | if (!nfs4_has_session(clp)) | |
5464 | return 0; | |
5465 | ||
1055d76d TM |
5466 | session = clp->cl_session; |
5467 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5468 | return 0; | |
5469 | ||
68bf05ef AA |
5470 | rsize = server->rsize; |
5471 | if (rsize == 0) | |
5472 | rsize = NFS_MAX_FILE_IO_SIZE; | |
5473 | wsize = server->wsize; | |
5474 | if (wsize == 0) | |
5475 | wsize = NFS_MAX_FILE_IO_SIZE; | |
5476 | ||
68bf05ef AA |
5477 | session->fc_attrs.max_rqst_sz = wsize + nfs41_maxwrite_overhead; |
5478 | session->fc_attrs.max_resp_sz = rsize + nfs41_maxread_overhead; | |
2449ea2e | 5479 | |
fccba804 TM |
5480 | ret = nfs4_recover_expired_lease(server); |
5481 | if (!ret) | |
5482 | ret = nfs4_check_client_ready(clp); | |
5483 | return ret; | |
5484 | } | |
5485 | ||
d83217c1 AA |
5486 | int nfs4_init_ds_session(struct nfs_client *clp) |
5487 | { | |
5488 | struct nfs4_session *session = clp->cl_session; | |
5489 | int ret; | |
5490 | ||
5491 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5492 | return 0; | |
5493 | ||
5494 | ret = nfs4_client_recover_expired_lease(clp); | |
5495 | if (!ret) | |
5496 | /* Test for the DS role */ | |
5497 | if (!is_ds_client(clp)) | |
5498 | ret = -ENODEV; | |
5499 | if (!ret) | |
5500 | ret = nfs4_check_client_ready(clp); | |
5501 | return ret; | |
5502 | ||
5503 | } | |
5504 | EXPORT_SYMBOL_GPL(nfs4_init_ds_session); | |
5505 | ||
5506 | ||
fc01cea9 AA |
5507 | /* |
5508 | * Renew the cl_session lease. | |
5509 | */ | |
d5f8d3fe TM |
5510 | struct nfs4_sequence_data { |
5511 | struct nfs_client *clp; | |
5512 | struct nfs4_sequence_args args; | |
5513 | struct nfs4_sequence_res res; | |
5514 | }; | |
5515 | ||
dc96aef9 AB |
5516 | static void nfs41_sequence_release(void *data) |
5517 | { | |
d5f8d3fe TM |
5518 | struct nfs4_sequence_data *calldata = data; |
5519 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 5520 | |
7135840f AB |
5521 | if (atomic_read(&clp->cl_count) > 1) |
5522 | nfs4_schedule_state_renewal(clp); | |
5523 | nfs_put_client(clp); | |
d5f8d3fe | 5524 | kfree(calldata); |
dc96aef9 AB |
5525 | } |
5526 | ||
aa5190d0 TM |
5527 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5528 | { | |
5529 | switch(task->tk_status) { | |
5530 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5531 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5532 | return -EAGAIN; | |
5533 | default: | |
0400a6b0 | 5534 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5535 | } |
5536 | return 0; | |
5537 | } | |
5538 | ||
dc96aef9 | 5539 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 5540 | { |
d5f8d3fe TM |
5541 | struct nfs4_sequence_data *calldata = data; |
5542 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 5543 | |
14516c3a TM |
5544 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
5545 | return; | |
fc01cea9 AA |
5546 | |
5547 | if (task->tk_status < 0) { | |
5548 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
5549 | if (atomic_read(&clp->cl_count) == 1) |
5550 | goto out; | |
fc01cea9 | 5551 | |
aa5190d0 TM |
5552 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
5553 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
5554 | return; |
5555 | } | |
5556 | } | |
fc01cea9 | 5557 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 5558 | out: |
fc01cea9 AA |
5559 | dprintk("<-- %s\n", __func__); |
5560 | } | |
5561 | ||
5562 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
5563 | { | |
d5f8d3fe TM |
5564 | struct nfs4_sequence_data *calldata = data; |
5565 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
5566 | struct nfs4_sequence_args *args; |
5567 | struct nfs4_sequence_res *res; | |
5568 | ||
fc01cea9 AA |
5569 | args = task->tk_msg.rpc_argp; |
5570 | res = task->tk_msg.rpc_resp; | |
5571 | ||
9d12b216 | 5572 | if (nfs41_setup_sequence(clp->cl_session, args, res, task)) |
fc01cea9 AA |
5573 | return; |
5574 | rpc_call_start(task); | |
5575 | } | |
5576 | ||
5577 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
5578 | .rpc_call_done = nfs41_sequence_call_done, | |
5579 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 5580 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
5581 | }; |
5582 | ||
71ac6da9 | 5583 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) |
fc01cea9 | 5584 | { |
d5f8d3fe | 5585 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
5586 | struct rpc_message msg = { |
5587 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
5588 | .rpc_cred = cred, | |
5589 | }; | |
71ac6da9 TM |
5590 | struct rpc_task_setup task_setup_data = { |
5591 | .rpc_client = clp->cl_rpcclient, | |
5592 | .rpc_message = &msg, | |
5593 | .callback_ops = &nfs41_sequence_ops, | |
5594 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT, | |
5595 | }; | |
fc01cea9 | 5596 | |
7135840f | 5597 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 5598 | return ERR_PTR(-EIO); |
dfb4f309 | 5599 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 5600 | if (calldata == NULL) { |
7135840f | 5601 | nfs_put_client(clp); |
71ac6da9 | 5602 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 5603 | } |
9d12b216 | 5604 | nfs41_init_sequence(&calldata->args, &calldata->res, 0); |
d5f8d3fe TM |
5605 | msg.rpc_argp = &calldata->args; |
5606 | msg.rpc_resp = &calldata->res; | |
5607 | calldata->clp = clp; | |
71ac6da9 | 5608 | task_setup_data.callback_data = calldata; |
fc01cea9 | 5609 | |
71ac6da9 TM |
5610 | return rpc_run_task(&task_setup_data); |
5611 | } | |
5612 | ||
2f60ea6b | 5613 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
5614 | { |
5615 | struct rpc_task *task; | |
5616 | int ret = 0; | |
5617 | ||
2f60ea6b TM |
5618 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
5619 | return 0; | |
71ac6da9 TM |
5620 | task = _nfs41_proc_sequence(clp, cred); |
5621 | if (IS_ERR(task)) | |
5622 | ret = PTR_ERR(task); | |
5623 | else | |
bf294b41 | 5624 | rpc_put_task_async(task); |
71ac6da9 TM |
5625 | dprintk("<-- %s status=%d\n", __func__, ret); |
5626 | return ret; | |
5627 | } | |
5628 | ||
5629 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5630 | { | |
5631 | struct rpc_task *task; | |
5632 | int ret; | |
5633 | ||
5634 | task = _nfs41_proc_sequence(clp, cred); | |
5635 | if (IS_ERR(task)) { | |
5636 | ret = PTR_ERR(task); | |
5637 | goto out; | |
5638 | } | |
5639 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
5640 | if (!ret) { |
5641 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
5642 | ||
5643 | if (task->tk_status == 0) | |
5644 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 5645 | ret = task->tk_status; |
b4410c2f | 5646 | } |
71ac6da9 TM |
5647 | rpc_put_task(task); |
5648 | out: | |
5649 | dprintk("<-- %s status=%d\n", __func__, ret); | |
5650 | return ret; | |
fc01cea9 AA |
5651 | } |
5652 | ||
fce5c838 RL |
5653 | struct nfs4_reclaim_complete_data { |
5654 | struct nfs_client *clp; | |
5655 | struct nfs41_reclaim_complete_args arg; | |
5656 | struct nfs41_reclaim_complete_res res; | |
5657 | }; | |
5658 | ||
5659 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
5660 | { | |
5661 | struct nfs4_reclaim_complete_data *calldata = data; | |
5662 | ||
b257957e | 5663 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
035168ab TM |
5664 | if (nfs41_setup_sequence(calldata->clp->cl_session, |
5665 | &calldata->arg.seq_args, | |
9d12b216 | 5666 | &calldata->res.seq_res, task)) |
fce5c838 RL |
5667 | return; |
5668 | ||
5669 | rpc_call_start(task); | |
5670 | } | |
5671 | ||
aa5190d0 TM |
5672 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5673 | { | |
5674 | switch(task->tk_status) { | |
5675 | case 0: | |
5676 | case -NFS4ERR_COMPLETE_ALREADY: | |
5677 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
5678 | break; | |
5679 | case -NFS4ERR_DELAY: | |
aa5190d0 | 5680 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
5681 | /* fall through */ |
5682 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
5683 | return -EAGAIN; |
5684 | default: | |
0400a6b0 | 5685 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5686 | } |
5687 | return 0; | |
5688 | } | |
5689 | ||
fce5c838 RL |
5690 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
5691 | { | |
5692 | struct nfs4_reclaim_complete_data *calldata = data; | |
5693 | struct nfs_client *clp = calldata->clp; | |
5694 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
5695 | ||
5696 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5697 | if (!nfs41_sequence_done(task, res)) |
5698 | return; | |
fce5c838 | 5699 | |
aa5190d0 TM |
5700 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
5701 | rpc_restart_call_prepare(task); | |
5702 | return; | |
5703 | } | |
fce5c838 RL |
5704 | dprintk("<-- %s\n", __func__); |
5705 | } | |
5706 | ||
5707 | static void nfs4_free_reclaim_complete_data(void *data) | |
5708 | { | |
5709 | struct nfs4_reclaim_complete_data *calldata = data; | |
5710 | ||
5711 | kfree(calldata); | |
5712 | } | |
5713 | ||
5714 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
5715 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
5716 | .rpc_call_done = nfs4_reclaim_complete_done, | |
5717 | .rpc_release = nfs4_free_reclaim_complete_data, | |
5718 | }; | |
5719 | ||
5720 | /* | |
5721 | * Issue a global reclaim complete. | |
5722 | */ | |
5723 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
5724 | { | |
5725 | struct nfs4_reclaim_complete_data *calldata; | |
5726 | struct rpc_task *task; | |
5727 | struct rpc_message msg = { | |
5728 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
5729 | }; | |
5730 | struct rpc_task_setup task_setup_data = { | |
5731 | .rpc_client = clp->cl_rpcclient, | |
5732 | .rpc_message = &msg, | |
5733 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
5734 | .flags = RPC_TASK_ASYNC, | |
5735 | }; | |
5736 | int status = -ENOMEM; | |
5737 | ||
5738 | dprintk("--> %s\n", __func__); | |
8535b2be | 5739 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
5740 | if (calldata == NULL) |
5741 | goto out; | |
5742 | calldata->clp = clp; | |
5743 | calldata->arg.one_fs = 0; | |
fce5c838 | 5744 | |
9d12b216 | 5745 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
fce5c838 RL |
5746 | msg.rpc_argp = &calldata->arg; |
5747 | msg.rpc_resp = &calldata->res; | |
5748 | task_setup_data.callback_data = calldata; | |
5749 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 5750 | if (IS_ERR(task)) { |
fce5c838 | 5751 | status = PTR_ERR(task); |
acf82b85 DC |
5752 | goto out; |
5753 | } | |
c34c32ea AA |
5754 | status = nfs4_wait_for_completion_rpc_task(task); |
5755 | if (status == 0) | |
5756 | status = task->tk_status; | |
fce5c838 | 5757 | rpc_put_task(task); |
acf82b85 | 5758 | return 0; |
fce5c838 RL |
5759 | out: |
5760 | dprintk("<-- %s status=%d\n", __func__, status); | |
5761 | return status; | |
5762 | } | |
b1f69b75 AA |
5763 | |
5764 | static void | |
5765 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
5766 | { | |
5767 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 5768 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
b1f69b75 AA |
5769 | |
5770 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
5771 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
5772 | * right now covering the LAYOUTGET we are about to send. | |
5773 | * However, that is not so catastrophic, and there seems | |
5774 | * to be no way to prevent it completely. | |
5775 | */ | |
b1f69b75 | 5776 | if (nfs4_setup_sequence(server, &lgp->args.seq_args, |
9d12b216 | 5777 | &lgp->res.seq_res, task)) |
b1f69b75 | 5778 | return; |
cf7d63f1 FI |
5779 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
5780 | NFS_I(lgp->args.inode)->layout, | |
5781 | lgp->args.ctx->state)) { | |
5782 | rpc_exit(task, NFS4_OK); | |
5783 | return; | |
5784 | } | |
b1f69b75 AA |
5785 | rpc_call_start(task); |
5786 | } | |
5787 | ||
5788 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
5789 | { | |
5790 | struct nfs4_layoutget *lgp = calldata; | |
5791 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5792 | ||
5793 | dprintk("--> %s\n", __func__); | |
5794 | ||
5795 | if (!nfs4_sequence_done(task, &lgp->res.seq_res)) | |
5796 | return; | |
5797 | ||
5798 | switch (task->tk_status) { | |
5799 | case 0: | |
5800 | break; | |
5801 | case -NFS4ERR_LAYOUTTRYLATER: | |
5802 | case -NFS4ERR_RECALLCONFLICT: | |
5803 | task->tk_status = -NFS4ERR_DELAY; | |
5804 | /* Fall through */ | |
5805 | default: | |
5806 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
5807 | rpc_restart_call_prepare(task); | |
5808 | return; | |
5809 | } | |
5810 | } | |
b1f69b75 AA |
5811 | dprintk("<-- %s\n", __func__); |
5812 | } | |
5813 | ||
5814 | static void nfs4_layoutget_release(void *calldata) | |
5815 | { | |
5816 | struct nfs4_layoutget *lgp = calldata; | |
5817 | ||
5818 | dprintk("--> %s\n", __func__); | |
b1f69b75 AA |
5819 | put_nfs_open_context(lgp->args.ctx); |
5820 | kfree(calldata); | |
5821 | dprintk("<-- %s\n", __func__); | |
5822 | } | |
5823 | ||
5824 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
5825 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
5826 | .rpc_call_done = nfs4_layoutget_done, | |
5827 | .rpc_release = nfs4_layoutget_release, | |
5828 | }; | |
5829 | ||
5830 | int nfs4_proc_layoutget(struct nfs4_layoutget *lgp) | |
5831 | { | |
5832 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5833 | struct rpc_task *task; | |
5834 | struct rpc_message msg = { | |
5835 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
5836 | .rpc_argp = &lgp->args, | |
5837 | .rpc_resp = &lgp->res, | |
5838 | }; | |
5839 | struct rpc_task_setup task_setup_data = { | |
5840 | .rpc_client = server->client, | |
5841 | .rpc_message = &msg, | |
5842 | .callback_ops = &nfs4_layoutget_call_ops, | |
5843 | .callback_data = lgp, | |
5844 | .flags = RPC_TASK_ASYNC, | |
5845 | }; | |
5846 | int status = 0; | |
5847 | ||
5848 | dprintk("--> %s\n", __func__); | |
5849 | ||
35124a09 | 5850 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 5851 | lgp->res.seq_res.sr_slot = NULL; |
9d12b216 | 5852 | nfs41_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
b1f69b75 AA |
5853 | task = rpc_run_task(&task_setup_data); |
5854 | if (IS_ERR(task)) | |
5855 | return PTR_ERR(task); | |
5856 | status = nfs4_wait_for_completion_rpc_task(task); | |
c31663d4 FI |
5857 | if (status == 0) |
5858 | status = task->tk_status; | |
5859 | if (status == 0) | |
5860 | status = pnfs_layout_process(lgp); | |
b1f69b75 AA |
5861 | rpc_put_task(task); |
5862 | dprintk("<-- %s status=%d\n", __func__, status); | |
5863 | return status; | |
5864 | } | |
5865 | ||
cbe82603 BH |
5866 | static void |
5867 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
5868 | { | |
5869 | struct nfs4_layoutreturn *lrp = calldata; | |
5870 | ||
5871 | dprintk("--> %s\n", __func__); | |
5872 | if (nfs41_setup_sequence(lrp->clp->cl_session, &lrp->args.seq_args, | |
9d12b216 | 5873 | &lrp->res.seq_res, task)) |
cbe82603 BH |
5874 | return; |
5875 | rpc_call_start(task); | |
5876 | } | |
5877 | ||
5878 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
5879 | { | |
5880 | struct nfs4_layoutreturn *lrp = calldata; | |
5881 | struct nfs_server *server; | |
a56aaa02 | 5882 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
5883 | |
5884 | dprintk("--> %s\n", __func__); | |
5885 | ||
5886 | if (!nfs4_sequence_done(task, &lrp->res.seq_res)) | |
5887 | return; | |
5888 | ||
5889 | server = NFS_SERVER(lrp->args.inode); | |
5890 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 5891 | rpc_restart_call_prepare(task); |
cbe82603 BH |
5892 | return; |
5893 | } | |
a2e1d4f2 | 5894 | spin_lock(&lo->plh_inode->i_lock); |
cbe82603 | 5895 | if (task->tk_status == 0) { |
cbe82603 | 5896 | if (lrp->res.lrs_present) { |
cbe82603 | 5897 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); |
cbe82603 BH |
5898 | } else |
5899 | BUG_ON(!list_empty(&lo->plh_segs)); | |
5900 | } | |
a2e1d4f2 FI |
5901 | lo->plh_block_lgets--; |
5902 | spin_unlock(&lo->plh_inode->i_lock); | |
cbe82603 BH |
5903 | dprintk("<-- %s\n", __func__); |
5904 | } | |
5905 | ||
5906 | static void nfs4_layoutreturn_release(void *calldata) | |
5907 | { | |
5908 | struct nfs4_layoutreturn *lrp = calldata; | |
5909 | ||
5910 | dprintk("--> %s\n", __func__); | |
a56aaa02 | 5911 | put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
5912 | kfree(calldata); |
5913 | dprintk("<-- %s\n", __func__); | |
5914 | } | |
5915 | ||
5916 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
5917 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
5918 | .rpc_call_done = nfs4_layoutreturn_done, | |
5919 | .rpc_release = nfs4_layoutreturn_release, | |
5920 | }; | |
5921 | ||
5922 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
5923 | { | |
5924 | struct rpc_task *task; | |
5925 | struct rpc_message msg = { | |
5926 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
5927 | .rpc_argp = &lrp->args, | |
5928 | .rpc_resp = &lrp->res, | |
5929 | }; | |
5930 | struct rpc_task_setup task_setup_data = { | |
5931 | .rpc_client = lrp->clp->cl_rpcclient, | |
5932 | .rpc_message = &msg, | |
5933 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
5934 | .callback_data = lrp, | |
5935 | }; | |
5936 | int status; | |
5937 | ||
5938 | dprintk("--> %s\n", __func__); | |
9d12b216 | 5939 | nfs41_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
5940 | task = rpc_run_task(&task_setup_data); |
5941 | if (IS_ERR(task)) | |
5942 | return PTR_ERR(task); | |
5943 | status = task->tk_status; | |
5944 | dprintk("<-- %s status=%d\n", __func__, status); | |
5945 | rpc_put_task(task); | |
5946 | return status; | |
5947 | } | |
5948 | ||
7f11d8d3 AA |
5949 | /* |
5950 | * Retrieve the list of Data Server devices from the MDS. | |
5951 | */ | |
5952 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
5953 | const struct nfs_fh *fh, | |
5954 | struct pnfs_devicelist *devlist) | |
5955 | { | |
5956 | struct nfs4_getdevicelist_args args = { | |
5957 | .fh = fh, | |
5958 | .layoutclass = server->pnfs_curr_ld->id, | |
5959 | }; | |
5960 | struct nfs4_getdevicelist_res res = { | |
5961 | .devlist = devlist, | |
5962 | }; | |
5963 | struct rpc_message msg = { | |
5964 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
5965 | .rpc_argp = &args, | |
5966 | .rpc_resp = &res, | |
5967 | }; | |
5968 | int status; | |
5969 | ||
5970 | dprintk("--> %s\n", __func__); | |
5971 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
5972 | &res.seq_res, 0); | |
5973 | dprintk("<-- %s status=%d\n", __func__, status); | |
5974 | return status; | |
5975 | } | |
5976 | ||
5977 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
5978 | const struct nfs_fh *fh, | |
5979 | struct pnfs_devicelist *devlist) | |
5980 | { | |
5981 | struct nfs4_exception exception = { }; | |
5982 | int err; | |
5983 | ||
5984 | do { | |
5985 | err = nfs4_handle_exception(server, | |
5986 | _nfs4_getdevicelist(server, fh, devlist), | |
5987 | &exception); | |
5988 | } while (exception.retry); | |
5989 | ||
5990 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
5991 | err, devlist->num_devs); | |
5992 | ||
5993 | return err; | |
5994 | } | |
5995 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
5996 | ||
b1f69b75 AA |
5997 | static int |
5998 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
5999 | { | |
6000 | struct nfs4_getdeviceinfo_args args = { | |
6001 | .pdev = pdev, | |
6002 | }; | |
6003 | struct nfs4_getdeviceinfo_res res = { | |
6004 | .pdev = pdev, | |
6005 | }; | |
6006 | struct rpc_message msg = { | |
6007 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
6008 | .rpc_argp = &args, | |
6009 | .rpc_resp = &res, | |
6010 | }; | |
6011 | int status; | |
6012 | ||
6013 | dprintk("--> %s\n", __func__); | |
7c513058 | 6014 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
6015 | dprintk("<-- %s status=%d\n", __func__, status); |
6016 | ||
6017 | return status; | |
6018 | } | |
6019 | ||
6020 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6021 | { | |
6022 | struct nfs4_exception exception = { }; | |
6023 | int err; | |
6024 | ||
6025 | do { | |
6026 | err = nfs4_handle_exception(server, | |
6027 | _nfs4_proc_getdeviceinfo(server, pdev), | |
6028 | &exception); | |
6029 | } while (exception.retry); | |
6030 | return err; | |
6031 | } | |
6032 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
6033 | ||
863a3c6c AA |
6034 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
6035 | { | |
6036 | struct nfs4_layoutcommit_data *data = calldata; | |
6037 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6038 | ||
6039 | if (nfs4_setup_sequence(server, &data->args.seq_args, | |
9d12b216 | 6040 | &data->res.seq_res, task)) |
863a3c6c AA |
6041 | return; |
6042 | rpc_call_start(task); | |
6043 | } | |
6044 | ||
6045 | static void | |
6046 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
6047 | { | |
6048 | struct nfs4_layoutcommit_data *data = calldata; | |
6049 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6050 | ||
6051 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
6052 | return; | |
6053 | ||
6054 | switch (task->tk_status) { /* Just ignore these failures */ | |
6055 | case NFS4ERR_DELEG_REVOKED: /* layout was recalled */ | |
6056 | case NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
6057 | case NFS4ERR_BADLAYOUT: /* no layout */ | |
6058 | case NFS4ERR_GRACE: /* loca_recalim always false */ | |
6059 | task->tk_status = 0; | |
6060 | } | |
6061 | ||
6062 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 6063 | rpc_restart_call_prepare(task); |
863a3c6c AA |
6064 | return; |
6065 | } | |
6066 | ||
6067 | if (task->tk_status == 0) | |
6068 | nfs_post_op_update_inode_force_wcc(data->args.inode, | |
6069 | data->res.fattr); | |
6070 | } | |
6071 | ||
6072 | static void nfs4_layoutcommit_release(void *calldata) | |
6073 | { | |
6074 | struct nfs4_layoutcommit_data *data = calldata; | |
a9bae566 | 6075 | struct pnfs_layout_segment *lseg, *tmp; |
92407e75 | 6076 | unsigned long *bitlock = &NFS_I(data->args.inode)->flags; |
863a3c6c | 6077 | |
db29c089 | 6078 | pnfs_cleanup_layoutcommit(data); |
863a3c6c | 6079 | /* Matched by references in pnfs_set_layoutcommit */ |
a9bae566 PT |
6080 | list_for_each_entry_safe(lseg, tmp, &data->lseg_list, pls_lc_list) { |
6081 | list_del_init(&lseg->pls_lc_list); | |
6082 | if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT, | |
6083 | &lseg->pls_flags)) | |
6084 | put_lseg(lseg); | |
6085 | } | |
92407e75 PT |
6086 | |
6087 | clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING, bitlock); | |
6088 | smp_mb__after_clear_bit(); | |
6089 | wake_up_bit(bitlock, NFS_INO_LAYOUTCOMMITTING); | |
6090 | ||
863a3c6c AA |
6091 | put_rpccred(data->cred); |
6092 | kfree(data); | |
6093 | } | |
6094 | ||
6095 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
6096 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
6097 | .rpc_call_done = nfs4_layoutcommit_done, | |
6098 | .rpc_release = nfs4_layoutcommit_release, | |
6099 | }; | |
6100 | ||
6101 | int | |
ef311537 | 6102 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
6103 | { |
6104 | struct rpc_message msg = { | |
6105 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
6106 | .rpc_argp = &data->args, | |
6107 | .rpc_resp = &data->res, | |
6108 | .rpc_cred = data->cred, | |
6109 | }; | |
6110 | struct rpc_task_setup task_setup_data = { | |
6111 | .task = &data->task, | |
6112 | .rpc_client = NFS_CLIENT(data->args.inode), | |
6113 | .rpc_message = &msg, | |
6114 | .callback_ops = &nfs4_layoutcommit_ops, | |
6115 | .callback_data = data, | |
6116 | .flags = RPC_TASK_ASYNC, | |
6117 | }; | |
6118 | struct rpc_task *task; | |
6119 | int status = 0; | |
6120 | ||
6121 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
6122 | "lbw: %llu inode %lu\n", | |
6123 | data->task.tk_pid, sync, | |
6124 | data->args.lastbytewritten, | |
6125 | data->args.inode->i_ino); | |
6126 | ||
9d12b216 | 6127 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
6128 | task = rpc_run_task(&task_setup_data); |
6129 | if (IS_ERR(task)) | |
6130 | return PTR_ERR(task); | |
ef311537 | 6131 | if (sync == false) |
863a3c6c AA |
6132 | goto out; |
6133 | status = nfs4_wait_for_completion_rpc_task(task); | |
6134 | if (status != 0) | |
6135 | goto out; | |
6136 | status = task->tk_status; | |
6137 | out: | |
6138 | dprintk("%s: status %d\n", __func__, status); | |
6139 | rpc_put_task(task); | |
6140 | return status; | |
6141 | } | |
fca78d6d BS |
6142 | |
6143 | static int | |
6144 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6145 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6146 | { | |
6147 | struct nfs41_secinfo_no_name_args args = { | |
6148 | .style = SECINFO_STYLE_CURRENT_FH, | |
6149 | }; | |
6150 | struct nfs4_secinfo_res res = { | |
6151 | .flavors = flavors, | |
6152 | }; | |
6153 | struct rpc_message msg = { | |
6154 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
6155 | .rpc_argp = &args, | |
6156 | .rpc_resp = &res, | |
6157 | }; | |
6158 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); | |
6159 | } | |
6160 | ||
6161 | static int | |
6162 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6163 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6164 | { | |
6165 | struct nfs4_exception exception = { }; | |
6166 | int err; | |
6167 | do { | |
6168 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6169 | switch (err) { | |
6170 | case 0: | |
6171 | case -NFS4ERR_WRONGSEC: | |
6172 | case -NFS4ERR_NOTSUPP: | |
6173 | break; | |
6174 | default: | |
6175 | err = nfs4_handle_exception(server, err, &exception); | |
6176 | } | |
6177 | } while (exception.retry); | |
6178 | return err; | |
6179 | } | |
6180 | ||
6181 | static int | |
6182 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
6183 | struct nfs_fsinfo *info) | |
6184 | { | |
6185 | int err; | |
6186 | struct page *page; | |
6187 | rpc_authflavor_t flavor; | |
6188 | struct nfs4_secinfo_flavors *flavors; | |
6189 | ||
6190 | page = alloc_page(GFP_KERNEL); | |
6191 | if (!page) { | |
6192 | err = -ENOMEM; | |
6193 | goto out; | |
6194 | } | |
6195 | ||
6196 | flavors = page_address(page); | |
6197 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6198 | ||
6199 | /* | |
6200 | * Fall back on "guess and check" method if | |
6201 | * the server doesn't support SECINFO_NO_NAME | |
6202 | */ | |
6203 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
6204 | err = nfs4_find_root_sec(server, fhandle, info); | |
6205 | goto out_freepage; | |
6206 | } | |
6207 | if (err) | |
6208 | goto out_freepage; | |
6209 | ||
6210 | flavor = nfs_find_best_sec(flavors); | |
6211 | if (err == 0) | |
6212 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
6213 | ||
6214 | out_freepage: | |
6215 | put_page(page); | |
6216 | if (err == -EACCES) | |
6217 | return -EPERM; | |
6218 | out: | |
6219 | return err; | |
6220 | } | |
1cab0652 BS |
6221 | |
6222 | static int _nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) | |
7d974794 | 6223 | { |
1cab0652 | 6224 | int status; |
7d974794 | 6225 | struct nfs41_test_stateid_args args = { |
1cab0652 | 6226 | .stateid = stateid, |
7d974794 BS |
6227 | }; |
6228 | struct nfs41_test_stateid_res res; | |
6229 | struct rpc_message msg = { | |
6230 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
6231 | .rpc_argp = &args, | |
6232 | .rpc_resp = &res, | |
6233 | }; | |
1cab0652 | 6234 | |
9d12b216 | 6235 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
1cab0652 BS |
6236 | status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
6237 | ||
6238 | if (status == NFS_OK) | |
6239 | return res.status; | |
6240 | return status; | |
7d974794 BS |
6241 | } |
6242 | ||
1cab0652 | 6243 | static int nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
7d974794 BS |
6244 | { |
6245 | struct nfs4_exception exception = { }; | |
6246 | int err; | |
6247 | do { | |
6248 | err = nfs4_handle_exception(server, | |
1cab0652 | 6249 | _nfs41_test_stateid(server, stateid), |
7d974794 BS |
6250 | &exception); |
6251 | } while (exception.retry); | |
6252 | return err; | |
6253 | } | |
9aeda35f | 6254 | |
1cab0652 | 6255 | static int _nfs4_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f | 6256 | { |
9aeda35f | 6257 | struct nfs41_free_stateid_args args = { |
1cab0652 | 6258 | .stateid = stateid, |
9aeda35f BS |
6259 | }; |
6260 | struct nfs41_free_stateid_res res; | |
6261 | struct rpc_message msg = { | |
6262 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
6263 | .rpc_argp = &args, | |
6264 | .rpc_resp = &res, | |
6265 | }; | |
6266 | ||
9d12b216 TM |
6267 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
6268 | return nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); | |
9aeda35f BS |
6269 | } |
6270 | ||
1cab0652 | 6271 | static int nfs41_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f BS |
6272 | { |
6273 | struct nfs4_exception exception = { }; | |
6274 | int err; | |
6275 | do { | |
6276 | err = nfs4_handle_exception(server, | |
1cab0652 | 6277 | _nfs4_free_stateid(server, stateid), |
9aeda35f BS |
6278 | &exception); |
6279 | } while (exception.retry); | |
6280 | return err; | |
6281 | } | |
557134a3 AA |
6282 | #endif /* CONFIG_NFS_V4_1 */ |
6283 | ||
591d71cb | 6284 | struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 6285 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 6286 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
6287 | .recover_open = nfs4_open_reclaim, |
6288 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 6289 | .establish_clid = nfs4_init_clientid, |
90a16617 | 6290 | .get_clid_cred = nfs4_get_setclientid_cred, |
1da177e4 LT |
6291 | }; |
6292 | ||
591d71cb AA |
6293 | #if defined(CONFIG_NFS_V4_1) |
6294 | struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { | |
6295 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, | |
6296 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
6297 | .recover_open = nfs4_open_reclaim, | |
6298 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 6299 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6300 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 6301 | .reclaim_complete = nfs41_proc_reclaim_complete, |
591d71cb AA |
6302 | }; |
6303 | #endif /* CONFIG_NFS_V4_1 */ | |
6304 | ||
6305 | struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { | |
6306 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, | |
6307 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
6308 | .recover_open = nfs4_open_expired, | |
6309 | .recover_lock = nfs4_lock_expired, | |
6310 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 6311 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
6312 | }; |
6313 | ||
6314 | #if defined(CONFIG_NFS_V4_1) | |
6315 | struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { | |
7eff03ae | 6316 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 6317 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
6318 | .recover_open = nfs41_open_expired, |
6319 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 6320 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6321 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 6322 | }; |
591d71cb | 6323 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 6324 | |
29fba38b BH |
6325 | struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
6326 | .sched_state_renewal = nfs4_proc_async_renew, | |
a7b72103 | 6327 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 6328 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
6329 | }; |
6330 | ||
6331 | #if defined(CONFIG_NFS_V4_1) | |
6332 | struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { | |
6333 | .sched_state_renewal = nfs41_proc_async_sequence, | |
a7b72103 | 6334 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 6335 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
6336 | }; |
6337 | #endif | |
6338 | ||
97dc1359 TM |
6339 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
6340 | .minor_version = 0, | |
6341 | .call_sync = _nfs4_call_sync, | |
e047a10c | 6342 | .validate_stateid = nfs4_validate_delegation_stateid, |
fca78d6d | 6343 | .find_root_sec = nfs4_find_root_sec, |
c48f4f35 TM |
6344 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
6345 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
6346 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
6347 | }; |
6348 | ||
6349 | #if defined(CONFIG_NFS_V4_1) | |
6350 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
6351 | .minor_version = 1, | |
6352 | .call_sync = _nfs4_call_sync_session, | |
e047a10c | 6353 | .validate_stateid = nfs41_validate_delegation_stateid, |
fca78d6d | 6354 | .find_root_sec = nfs41_find_root_sec, |
c48f4f35 TM |
6355 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
6356 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
6357 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
6358 | }; |
6359 | #endif | |
6360 | ||
97dc1359 TM |
6361 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
6362 | [0] = &nfs_v4_0_minor_ops, | |
6363 | #if defined(CONFIG_NFS_V4_1) | |
6364 | [1] = &nfs_v4_1_minor_ops, | |
6365 | #endif | |
6366 | }; | |
6367 | ||
92e1d5be | 6368 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
6369 | .permission = nfs_permission, |
6370 | .getattr = nfs_getattr, | |
6371 | .setattr = nfs_setattr, | |
64c2ce8b AK |
6372 | .getxattr = generic_getxattr, |
6373 | .setxattr = generic_setxattr, | |
6374 | .listxattr = generic_listxattr, | |
6375 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
6376 | }; |
6377 | ||
509de811 | 6378 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
6379 | .version = 4, /* protocol version */ |
6380 | .dentry_ops = &nfs4_dentry_operations, | |
6381 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 6382 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 6383 | .file_ops = &nfs4_file_operations, |
1da177e4 LT |
6384 | .getroot = nfs4_proc_get_root, |
6385 | .getattr = nfs4_proc_getattr, | |
6386 | .setattr = nfs4_proc_setattr, | |
6387 | .lookup = nfs4_proc_lookup, | |
6388 | .access = nfs4_proc_access, | |
6389 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
6390 | .create = nfs4_proc_create, |
6391 | .remove = nfs4_proc_remove, | |
6392 | .unlink_setup = nfs4_proc_unlink_setup, | |
6393 | .unlink_done = nfs4_proc_unlink_done, | |
6394 | .rename = nfs4_proc_rename, | |
d3d4152a JL |
6395 | .rename_setup = nfs4_proc_rename_setup, |
6396 | .rename_done = nfs4_proc_rename_done, | |
1da177e4 LT |
6397 | .link = nfs4_proc_link, |
6398 | .symlink = nfs4_proc_symlink, | |
6399 | .mkdir = nfs4_proc_mkdir, | |
6400 | .rmdir = nfs4_proc_remove, | |
6401 | .readdir = nfs4_proc_readdir, | |
6402 | .mknod = nfs4_proc_mknod, | |
6403 | .statfs = nfs4_proc_statfs, | |
6404 | .fsinfo = nfs4_proc_fsinfo, | |
6405 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 6406 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
6407 | .decode_dirent = nfs4_decode_dirent, |
6408 | .read_setup = nfs4_proc_read_setup, | |
ec06c096 | 6409 | .read_done = nfs4_read_done, |
1da177e4 | 6410 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 6411 | .write_done = nfs4_write_done, |
1da177e4 | 6412 | .commit_setup = nfs4_proc_commit_setup, |
788e7a89 | 6413 | .commit_done = nfs4_commit_done, |
1da177e4 | 6414 | .lock = nfs4_proc_lock, |
e50a1c2e | 6415 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 6416 | .close_context = nfs4_close_context, |
2b484297 | 6417 | .open_context = nfs4_atomic_open, |
45a52a02 | 6418 | .init_client = nfs4_init_client, |
5a5ea0d4 | 6419 | .secinfo = nfs4_proc_secinfo, |
1da177e4 LT |
6420 | }; |
6421 | ||
64c2ce8b AK |
6422 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
6423 | .prefix = XATTR_NAME_NFSV4_ACL, | |
6424 | .list = nfs4_xattr_list_nfs4_acl, | |
6425 | .get = nfs4_xattr_get_nfs4_acl, | |
6426 | .set = nfs4_xattr_set_nfs4_acl, | |
6427 | }; | |
6428 | ||
6429 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
6430 | &nfs4_xattr_nfs4_acl_handler, | |
6431 | NULL | |
6432 | }; | |
6433 | ||
ef159e91 TM |
6434 | module_param(max_session_slots, ushort, 0644); |
6435 | MODULE_PARM_DESC(max_session_slots, "Maximum number of outstanding NFSv4.1 " | |
6436 | "requests the client will negotiate"); | |
6437 | ||
1da177e4 LT |
6438 | /* |
6439 | * Local variables: | |
6440 | * c-basic-offset: 8 | |
6441 | * End: | |
6442 | */ |