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