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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 | ||
cdd4e68b | 75 | struct nfs4_opendata; |
864472e9 | 76 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
b257957e | 77 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data); |
1da177e4 | 78 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
9e33bed5 | 79 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *); |
9936781d | 80 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr); |
0ab64e0e TM |
81 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
82 | struct nfs_fattr *fattr, struct iattr *sattr, | |
83 | struct nfs4_state *state); | |
f062eb6c | 84 | #ifdef CONFIG_NFS_V4_1 |
1cab0652 BS |
85 | static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *); |
86 | static int nfs41_free_stateid(struct nfs_server *, nfs4_stateid *); | |
f062eb6c | 87 | #endif |
1da177e4 | 88 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 89 | static int nfs4_map_errors(int err) |
1da177e4 | 90 | { |
52567b03 TM |
91 | if (err >= -1000) |
92 | return err; | |
93 | switch (err) { | |
94 | case -NFS4ERR_RESOURCE: | |
95 | return -EREMOTEIO; | |
7ebb9315 BS |
96 | case -NFS4ERR_WRONGSEC: |
97 | return -EPERM; | |
3ddeb7c5 TM |
98 | case -NFS4ERR_BADOWNER: |
99 | case -NFS4ERR_BADNAME: | |
100 | return -EINVAL; | |
52567b03 | 101 | default: |
1da177e4 | 102 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 103 | __func__, -err); |
52567b03 | 104 | break; |
1da177e4 | 105 | } |
52567b03 | 106 | return -EIO; |
1da177e4 LT |
107 | } |
108 | ||
109 | /* | |
110 | * This is our standard bitmap for GETATTR requests. | |
111 | */ | |
112 | const u32 nfs4_fattr_bitmap[2] = { | |
113 | FATTR4_WORD0_TYPE | |
114 | | FATTR4_WORD0_CHANGE | |
115 | | FATTR4_WORD0_SIZE | |
116 | | FATTR4_WORD0_FSID | |
117 | | FATTR4_WORD0_FILEID, | |
118 | FATTR4_WORD1_MODE | |
119 | | FATTR4_WORD1_NUMLINKS | |
120 | | FATTR4_WORD1_OWNER | |
121 | | FATTR4_WORD1_OWNER_GROUP | |
122 | | FATTR4_WORD1_RAWDEV | |
123 | | FATTR4_WORD1_SPACE_USED | |
124 | | FATTR4_WORD1_TIME_ACCESS | |
125 | | FATTR4_WORD1_TIME_METADATA | |
126 | | FATTR4_WORD1_TIME_MODIFY | |
127 | }; | |
128 | ||
129 | const u32 nfs4_statfs_bitmap[2] = { | |
130 | FATTR4_WORD0_FILES_AVAIL | |
131 | | FATTR4_WORD0_FILES_FREE | |
132 | | FATTR4_WORD0_FILES_TOTAL, | |
133 | FATTR4_WORD1_SPACE_AVAIL | |
134 | | FATTR4_WORD1_SPACE_FREE | |
135 | | FATTR4_WORD1_SPACE_TOTAL | |
136 | }; | |
137 | ||
4ce79717 | 138 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
139 | FATTR4_WORD0_MAXLINK |
140 | | FATTR4_WORD0_MAXNAME, | |
141 | 0 | |
142 | }; | |
143 | ||
dae100c2 | 144 | const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE |
1da177e4 LT |
145 | | FATTR4_WORD0_MAXREAD |
146 | | FATTR4_WORD0_MAXWRITE | |
147 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 148 | FATTR4_WORD1_TIME_DELTA |
dae100c2 FI |
149 | | FATTR4_WORD1_FS_LAYOUT_TYPES, |
150 | FATTR4_WORD2_LAYOUT_BLKSIZE | |
1da177e4 LT |
151 | }; |
152 | ||
830b8e33 MN |
153 | const u32 nfs4_fs_locations_bitmap[2] = { |
154 | FATTR4_WORD0_TYPE | |
155 | | FATTR4_WORD0_CHANGE | |
156 | | FATTR4_WORD0_SIZE | |
157 | | FATTR4_WORD0_FSID | |
158 | | FATTR4_WORD0_FILEID | |
159 | | FATTR4_WORD0_FS_LOCATIONS, | |
160 | FATTR4_WORD1_MODE | |
161 | | FATTR4_WORD1_NUMLINKS | |
162 | | FATTR4_WORD1_OWNER | |
163 | | FATTR4_WORD1_OWNER_GROUP | |
164 | | FATTR4_WORD1_RAWDEV | |
165 | | FATTR4_WORD1_SPACE_USED | |
166 | | FATTR4_WORD1_TIME_ACCESS | |
167 | | FATTR4_WORD1_TIME_METADATA | |
168 | | FATTR4_WORD1_TIME_MODIFY | |
169 | | FATTR4_WORD1_MOUNTED_ON_FILEID | |
170 | }; | |
171 | ||
bc4785cd | 172 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
173 | struct nfs4_readdir_arg *readdir) |
174 | { | |
0dbb4c67 | 175 | __be32 *start, *p; |
1da177e4 LT |
176 | |
177 | BUG_ON(readdir->count < 80); | |
178 | if (cookie > 2) { | |
b7ef1956 | 179 | readdir->cookie = cookie; |
1da177e4 LT |
180 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
181 | return; | |
182 | } | |
183 | ||
184 | readdir->cookie = 0; | |
185 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
186 | if (cookie == 2) | |
187 | return; | |
188 | ||
189 | /* | |
190 | * NFSv4 servers do not return entries for '.' and '..' | |
191 | * Therefore, we fake these entries here. We let '.' | |
192 | * have cookie 0 and '..' have cookie 1. Note that | |
193 | * when talking to the server, we always send cookie 0 | |
194 | * instead of 1 or 2. | |
195 | */ | |
0dbb4c67 | 196 | start = p = kmap_atomic(*readdir->pages, KM_USER0); |
1da177e4 LT |
197 | |
198 | if (cookie == 0) { | |
199 | *p++ = xdr_one; /* next */ | |
200 | *p++ = xdr_zero; /* cookie, first word */ | |
201 | *p++ = xdr_one; /* cookie, second word */ | |
202 | *p++ = xdr_one; /* entry len */ | |
203 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
204 | p++; | |
205 | *p++ = xdr_one; /* bitmap length */ | |
206 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
207 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 208 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
209 | } |
210 | ||
211 | *p++ = xdr_one; /* next */ | |
212 | *p++ = xdr_zero; /* cookie, first word */ | |
213 | *p++ = xdr_two; /* cookie, second word */ | |
214 | *p++ = xdr_two; /* entry len */ | |
215 | memcpy(p, "..\0\0", 4); /* entry */ | |
216 | p++; | |
217 | *p++ = xdr_one; /* bitmap length */ | |
218 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
219 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 220 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
221 | |
222 | readdir->pgbase = (char *)p - (char *)start; | |
223 | readdir->count -= readdir->pgbase; | |
224 | kunmap_atomic(start, KM_USER0); | |
225 | } | |
226 | ||
65de872e TM |
227 | static int nfs4_wait_clnt_recover(struct nfs_client *clp) |
228 | { | |
229 | int res; | |
230 | ||
231 | might_sleep(); | |
232 | ||
e005e804 | 233 | res = wait_on_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING, |
72cb77f4 | 234 | nfs_wait_bit_killable, TASK_KILLABLE); |
65de872e TM |
235 | return res; |
236 | } | |
237 | ||
238 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) | |
239 | { | |
240 | int res = 0; | |
241 | ||
242 | might_sleep(); | |
243 | ||
244 | if (*timeout <= 0) | |
245 | *timeout = NFS4_POLL_RETRY_MIN; | |
246 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
247 | *timeout = NFS4_POLL_RETRY_MAX; | |
d310310c | 248 | freezable_schedule_timeout_killable(*timeout); |
65de872e TM |
249 | if (fatal_signal_pending(current)) |
250 | res = -ERESTARTSYS; | |
251 | *timeout <<= 1; | |
252 | return res; | |
253 | } | |
254 | ||
255 | /* This is the error handling routine for processes that are allowed | |
256 | * to sleep. | |
257 | */ | |
b064eca2 | 258 | static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
65de872e TM |
259 | { |
260 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 261 | struct nfs4_state *state = exception->state; |
65de872e TM |
262 | int ret = errorcode; |
263 | ||
264 | exception->retry = 0; | |
265 | switch(errorcode) { | |
266 | case 0: | |
267 | return 0; | |
9e33bed5 TM |
268 | case -NFS4ERR_ADMIN_REVOKED: |
269 | case -NFS4ERR_BAD_STATEID: | |
270 | case -NFS4ERR_OPENMODE: | |
271 | if (state == NULL) | |
272 | break; | |
0400a6b0 TM |
273 | nfs4_schedule_stateid_recovery(server, state); |
274 | goto wait_on_recovery; | |
0ced63d1 TM |
275 | case -NFS4ERR_EXPIRED: |
276 | if (state != NULL) | |
277 | nfs4_schedule_stateid_recovery(server, state); | |
65de872e | 278 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 279 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
280 | nfs4_schedule_lease_recovery(clp); |
281 | goto wait_on_recovery; | |
03391693 | 282 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
283 | case -NFS4ERR_BADSESSION: |
284 | case -NFS4ERR_BADSLOT: | |
285 | case -NFS4ERR_BAD_HIGH_SLOT: | |
286 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
287 | case -NFS4ERR_DEADSESSION: | |
288 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
289 | case -NFS4ERR_SEQ_MISORDERED: | |
290 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
291 | errorcode); | |
0400a6b0 | 292 | nfs4_schedule_session_recovery(clp->cl_session); |
4745e315 | 293 | exception->retry = 1; |
b9179237 | 294 | break; |
03391693 | 295 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 296 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
297 | if (exception->timeout > HZ) { |
298 | /* We have retried a decent amount, time to | |
299 | * fail | |
300 | */ | |
301 | ret = -EBUSY; | |
302 | break; | |
303 | } | |
65de872e TM |
304 | case -NFS4ERR_GRACE: |
305 | case -NFS4ERR_DELAY: | |
2c643488 | 306 | case -EKEYEXPIRED: |
65de872e TM |
307 | ret = nfs4_delay(server->client, &exception->timeout); |
308 | if (ret != 0) | |
309 | break; | |
a8a4ae3a | 310 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
311 | case -NFS4ERR_OLD_STATEID: |
312 | exception->retry = 1; | |
b064eca2 TM |
313 | break; |
314 | case -NFS4ERR_BADOWNER: | |
315 | /* The following works around a Linux server bug! */ | |
316 | case -NFS4ERR_BADNAME: | |
317 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
318 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
319 | exception->retry = 1; | |
320 | printk(KERN_WARNING "NFS: v4 server %s " | |
321 | "does not accept raw " | |
322 | "uid/gids. " | |
323 | "Reenabling the idmapper.\n", | |
324 | server->nfs_client->cl_hostname); | |
325 | } | |
65de872e TM |
326 | } |
327 | /* We failed to handle the error */ | |
328 | return nfs4_map_errors(ret); | |
0400a6b0 | 329 | wait_on_recovery: |
a2c0b9e2 TM |
330 | ret = nfs4_wait_clnt_recover(clp); |
331 | if (ret == 0) | |
332 | exception->retry = 1; | |
333 | return ret; | |
65de872e TM |
334 | } |
335 | ||
336 | ||
452e9352 | 337 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 338 | { |
1da177e4 LT |
339 | spin_lock(&clp->cl_lock); |
340 | if (time_before(clp->cl_last_renewal,timestamp)) | |
341 | clp->cl_last_renewal = timestamp; | |
342 | spin_unlock(&clp->cl_lock); | |
343 | } | |
344 | ||
452e9352 TM |
345 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
346 | { | |
347 | do_renew_lease(server->nfs_client, timestamp); | |
348 | } | |
349 | ||
cccef3b9 AA |
350 | #if defined(CONFIG_NFS_V4_1) |
351 | ||
e2c4ab3c AA |
352 | /* |
353 | * nfs4_free_slot - free a slot and efficiently update slot table. | |
354 | * | |
355 | * freeing a slot is trivially done by clearing its respective bit | |
356 | * in the bitmap. | |
357 | * If the freed slotid equals highest_used_slotid we want to update it | |
358 | * so that the server would be able to size down the slot table if needed, | |
359 | * otherwise we know that the highest_used_slotid is still in use. | |
360 | * When updating highest_used_slotid there may be "holes" in the bitmap | |
361 | * so we need to scan down from highest_used_slotid to 0 looking for the now | |
362 | * highest slotid in use. | |
45d43c29 | 363 | * If none found, highest_used_slotid is set to NFS4_NO_SLOT. |
35dc1d74 TM |
364 | * |
365 | * Must be called while holding tbl->slot_tbl_lock | |
e2c4ab3c AA |
366 | */ |
367 | static void | |
45d43c29 | 368 | nfs4_free_slot(struct nfs4_slot_table *tbl, u32 slotid) |
e2c4ab3c | 369 | { |
45d43c29 | 370 | BUG_ON(slotid >= NFS4_MAX_SLOT_TABLE); |
e2c4ab3c AA |
371 | /* clear used bit in bitmap */ |
372 | __clear_bit(slotid, tbl->used_slots); | |
373 | ||
374 | /* update highest_used_slotid when it is freed */ | |
375 | if (slotid == tbl->highest_used_slotid) { | |
376 | slotid = find_last_bit(tbl->used_slots, tbl->max_slots); | |
bcb56164 | 377 | if (slotid < tbl->max_slots) |
e2c4ab3c AA |
378 | tbl->highest_used_slotid = slotid; |
379 | else | |
45d43c29 | 380 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
e2c4ab3c | 381 | } |
45d43c29 TM |
382 | dprintk("%s: slotid %u highest_used_slotid %d\n", __func__, |
383 | slotid, tbl->highest_used_slotid); | |
e2c4ab3c AA |
384 | } |
385 | ||
961a828d TM |
386 | bool nfs4_set_task_privileged(struct rpc_task *task, void *dummy) |
387 | { | |
388 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
389 | return true; | |
390 | } | |
391 | ||
3bfb0fc5 | 392 | /* |
42acd021 | 393 | * Signal state manager thread if session fore channel is drained |
3bfb0fc5 | 394 | */ |
42acd021 | 395 | static void nfs4_check_drain_fc_complete(struct nfs4_session *ses) |
3bfb0fc5 | 396 | { |
a2118c33 | 397 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state)) { |
961a828d TM |
398 | rpc_wake_up_first(&ses->fc_slot_table.slot_tbl_waitq, |
399 | nfs4_set_task_privileged, NULL); | |
3bfb0fc5 AB |
400 | return; |
401 | } | |
402 | ||
45d43c29 | 403 | if (ses->fc_slot_table.highest_used_slotid != NFS4_NO_SLOT) |
3bfb0fc5 AB |
404 | return; |
405 | ||
42acd021 AA |
406 | dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__); |
407 | complete(&ses->fc_slot_table.complete); | |
408 | } | |
409 | ||
410 | /* | |
411 | * Signal state manager thread if session back channel is drained | |
412 | */ | |
413 | void nfs4_check_drain_bc_complete(struct nfs4_session *ses) | |
414 | { | |
415 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state) || | |
45d43c29 | 416 | ses->bc_slot_table.highest_used_slotid != NFS4_NO_SLOT) |
42acd021 AA |
417 | return; |
418 | dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__); | |
419 | complete(&ses->bc_slot_table.complete); | |
3bfb0fc5 AB |
420 | } |
421 | ||
d185a334 | 422 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 AA |
423 | { |
424 | struct nfs4_slot_table *tbl; | |
425 | ||
d185a334 | 426 | tbl = &res->sr_session->fc_slot_table; |
dfb4f309 | 427 | if (!res->sr_slot) { |
13615871 AA |
428 | /* just wake up the next guy waiting since |
429 | * we may have not consumed a slot after all */ | |
691daf3b | 430 | dprintk("%s: No slot\n", __func__); |
35dc1d74 | 431 | return; |
13615871 | 432 | } |
ea028ac9 | 433 | |
35dc1d74 | 434 | spin_lock(&tbl->slot_tbl_lock); |
aabd0b40 | 435 | nfs4_free_slot(tbl, res->sr_slot - tbl->slots); |
42acd021 | 436 | nfs4_check_drain_fc_complete(res->sr_session); |
35dc1d74 | 437 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 438 | res->sr_slot = NULL; |
13615871 AA |
439 | } |
440 | ||
14516c3a | 441 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c AA |
442 | { |
443 | unsigned long timestamp; | |
14516c3a | 444 | struct nfs_client *clp; |
b0df806c AA |
445 | |
446 | /* | |
447 | * sr_status remains 1 if an RPC level error occurred. The server | |
448 | * may or may not have processed the sequence operation.. | |
449 | * Proceed as if the server received and processed the sequence | |
450 | * operation. | |
451 | */ | |
452 | if (res->sr_status == 1) | |
453 | res->sr_status = NFS_OK; | |
454 | ||
468f8613 BS |
455 | /* don't increment the sequence number if the task wasn't sent */ |
456 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
457 | goto out; |
458 | ||
691daf3b | 459 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
460 | switch (res->sr_status) { |
461 | case 0: | |
b0df806c | 462 | /* Update the slot's sequence and clientid lease timer */ |
dfb4f309 | 463 | ++res->sr_slot->seq_nr; |
b0df806c | 464 | timestamp = res->sr_renewal_time; |
14516c3a | 465 | clp = res->sr_session->clp; |
452e9352 | 466 | do_renew_lease(clp, timestamp); |
0629e370 | 467 | /* Check sequence flags */ |
b4410c2f TM |
468 | if (res->sr_status_flags != 0) |
469 | nfs4_schedule_lease_recovery(clp); | |
14516c3a TM |
470 | break; |
471 | case -NFS4ERR_DELAY: | |
472 | /* The server detected a resend of the RPC call and | |
473 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
474 | * of RFC5661. | |
475 | */ | |
12364a4f | 476 | dprintk("%s: slot=%td seq=%d: Operation in progress\n", |
dfb4f309 BH |
477 | __func__, |
478 | res->sr_slot - res->sr_session->fc_slot_table.slots, | |
479 | res->sr_slot->seq_nr); | |
14516c3a TM |
480 | goto out_retry; |
481 | default: | |
482 | /* Just update the slot sequence no. */ | |
dfb4f309 | 483 | ++res->sr_slot->seq_nr; |
b0df806c AA |
484 | } |
485 | out: | |
486 | /* The session may be reset by one of the error handlers. */ | |
487 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 488 | nfs41_sequence_free_slot(res); |
14516c3a TM |
489 | return 1; |
490 | out_retry: | |
d05dd4e9 | 491 | if (!rpc_restart_call(task)) |
14516c3a TM |
492 | goto out; |
493 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
494 | return 0; | |
b0df806c AA |
495 | } |
496 | ||
14516c3a TM |
497 | static int nfs4_sequence_done(struct rpc_task *task, |
498 | struct nfs4_sequence_res *res) | |
df896455 | 499 | { |
14516c3a TM |
500 | if (res->sr_session == NULL) |
501 | return 1; | |
502 | return nfs41_sequence_done(task, res); | |
df896455 TM |
503 | } |
504 | ||
510b8175 BH |
505 | /* |
506 | * nfs4_find_slot - efficiently look for a free slot | |
507 | * | |
508 | * nfs4_find_slot looks for an unset bit in the used_slots bitmap. | |
509 | * If found, we mark the slot as used, update the highest_used_slotid, | |
510 | * and respectively set up the sequence operation args. | |
45d43c29 | 511 | * The slot number is returned if found, or NFS4_NO_SLOT otherwise. |
fbcd4abc AA |
512 | * |
513 | * Note: must be called with under the slot_tbl_lock. | |
510b8175 | 514 | */ |
45d43c29 | 515 | static u32 |
40ead580 | 516 | nfs4_find_slot(struct nfs4_slot_table *tbl) |
510b8175 | 517 | { |
45d43c29 TM |
518 | u32 slotid; |
519 | u32 ret_id = NFS4_NO_SLOT; | |
510b8175 | 520 | |
45d43c29 | 521 | dprintk("--> %s used_slots=%04lx highest_used=%u max_slots=%u\n", |
510b8175 BH |
522 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, |
523 | tbl->max_slots); | |
524 | slotid = find_first_zero_bit(tbl->used_slots, tbl->max_slots); | |
525 | if (slotid >= tbl->max_slots) | |
526 | goto out; | |
527 | __set_bit(slotid, tbl->used_slots); | |
45d43c29 TM |
528 | if (slotid > tbl->highest_used_slotid || |
529 | tbl->highest_used_slotid == NFS4_NO_SLOT) | |
510b8175 BH |
530 | tbl->highest_used_slotid = slotid; |
531 | ret_id = slotid; | |
532 | out: | |
533 | dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n", | |
534 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, ret_id); | |
510b8175 BH |
535 | return ret_id; |
536 | } | |
537 | ||
9d12b216 TM |
538 | static void nfs41_init_sequence(struct nfs4_sequence_args *args, |
539 | struct nfs4_sequence_res *res, int cache_reply) | |
540 | { | |
541 | args->sa_session = NULL; | |
542 | args->sa_cache_this = 0; | |
543 | if (cache_reply) | |
544 | args->sa_cache_this = 1; | |
545 | res->sr_session = NULL; | |
546 | res->sr_slot = NULL; | |
547 | } | |
548 | ||
dc70d7b3 | 549 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
550 | struct nfs4_sequence_args *args, |
551 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
552 | struct rpc_task *task) |
553 | { | |
fbcd4abc AA |
554 | struct nfs4_slot *slot; |
555 | struct nfs4_slot_table *tbl; | |
45d43c29 | 556 | u32 slotid; |
fbcd4abc AA |
557 | |
558 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 559 | /* slot already allocated? */ |
dfb4f309 | 560 | if (res->sr_slot != NULL) |
ce5039c1 AA |
561 | return 0; |
562 | ||
fbcd4abc AA |
563 | tbl = &session->fc_slot_table; |
564 | ||
565 | spin_lock(&tbl->slot_tbl_lock); | |
a2118c33 | 566 | if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) && |
5601a00d | 567 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { |
0b1c8fc4 | 568 | /* The state manager will wait until the slot table is empty */ |
05f0d236 | 569 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
b069d94a | 570 | spin_unlock(&tbl->slot_tbl_lock); |
0b1c8fc4 | 571 | dprintk("%s session is draining\n", __func__); |
05f0d236 | 572 | return -EAGAIN; |
b069d94a AA |
573 | } |
574 | ||
689cf5c1 AB |
575 | if (!rpc_queue_empty(&tbl->slot_tbl_waitq) && |
576 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { | |
577 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
578 | spin_unlock(&tbl->slot_tbl_lock); | |
579 | dprintk("%s enforce FIFO order\n", __func__); | |
580 | return -EAGAIN; | |
581 | } | |
582 | ||
40ead580 | 583 | slotid = nfs4_find_slot(tbl); |
45d43c29 | 584 | if (slotid == NFS4_NO_SLOT) { |
fbcd4abc AA |
585 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
586 | spin_unlock(&tbl->slot_tbl_lock); | |
587 | dprintk("<-- %s: no free slots\n", __func__); | |
588 | return -EAGAIN; | |
589 | } | |
590 | spin_unlock(&tbl->slot_tbl_lock); | |
591 | ||
689cf5c1 | 592 | rpc_task_set_priority(task, RPC_PRIORITY_NORMAL); |
fbcd4abc | 593 | slot = tbl->slots + slotid; |
99fe60d0 | 594 | args->sa_session = session; |
fbcd4abc | 595 | args->sa_slotid = slotid; |
fbcd4abc AA |
596 | |
597 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, slotid, slot->seq_nr); | |
598 | ||
99fe60d0 | 599 | res->sr_session = session; |
dfb4f309 | 600 | res->sr_slot = slot; |
fbcd4abc | 601 | res->sr_renewal_time = jiffies; |
2a6e26cd | 602 | res->sr_status_flags = 0; |
fbcd4abc AA |
603 | /* |
604 | * sr_status is only set in decode_sequence, and so will remain | |
605 | * set to 1 if an rpc level failure occurs. | |
606 | */ | |
607 | res->sr_status = 1; | |
ce5039c1 AA |
608 | return 0; |
609 | } | |
dc70d7b3 | 610 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 611 | |
035168ab | 612 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
613 | struct nfs4_sequence_args *args, |
614 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
615 | struct rpc_task *task) |
616 | { | |
035168ab | 617 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
618 | int ret = 0; |
619 | ||
9d12b216 | 620 | if (session == NULL) |
035168ab | 621 | goto out; |
035168ab | 622 | |
12364a4f | 623 | dprintk("--> %s clp %p session %p sr_slot %td\n", |
dfb4f309 BH |
624 | __func__, session->clp, session, res->sr_slot ? |
625 | res->sr_slot - session->fc_slot_table.slots : -1); | |
ce5039c1 | 626 | |
9d12b216 | 627 | ret = nfs41_setup_sequence(session, args, res, task); |
ce5039c1 AA |
628 | out: |
629 | dprintk("<-- %s status=%d\n", __func__, ret); | |
630 | return ret; | |
631 | } | |
632 | ||
633 | struct nfs41_call_sync_data { | |
035168ab | 634 | const struct nfs_server *seq_server; |
ce5039c1 AA |
635 | struct nfs4_sequence_args *seq_args; |
636 | struct nfs4_sequence_res *seq_res; | |
ce5039c1 AA |
637 | }; |
638 | ||
639 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
640 | { | |
641 | struct nfs41_call_sync_data *data = calldata; | |
642 | ||
035168ab TM |
643 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
644 | ||
645 | if (nfs4_setup_sequence(data->seq_server, data->seq_args, | |
9d12b216 | 646 | data->seq_res, task)) |
ce5039c1 AA |
647 | return; |
648 | rpc_call_start(task); | |
649 | } | |
650 | ||
b257957e AB |
651 | static void nfs41_call_priv_sync_prepare(struct rpc_task *task, void *calldata) |
652 | { | |
653 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
654 | nfs41_call_sync_prepare(task, calldata); | |
655 | } | |
656 | ||
69ab40c4 AA |
657 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
658 | { | |
659 | struct nfs41_call_sync_data *data = calldata; | |
660 | ||
14516c3a | 661 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
662 | } |
663 | ||
ce5039c1 AA |
664 | struct rpc_call_ops nfs41_call_sync_ops = { |
665 | .rpc_call_prepare = nfs41_call_sync_prepare, | |
69ab40c4 | 666 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
667 | }; |
668 | ||
b257957e AB |
669 | struct rpc_call_ops nfs41_call_priv_sync_ops = { |
670 | .rpc_call_prepare = nfs41_call_priv_sync_prepare, | |
671 | .rpc_call_done = nfs41_call_sync_done, | |
672 | }; | |
673 | ||
7c513058 BS |
674 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
675 | struct nfs_server *server, | |
ce5039c1 AA |
676 | struct rpc_message *msg, |
677 | struct nfs4_sequence_args *args, | |
678 | struct nfs4_sequence_res *res, | |
b257957e | 679 | int privileged) |
ce5039c1 AA |
680 | { |
681 | int ret; | |
682 | struct rpc_task *task; | |
683 | struct nfs41_call_sync_data data = { | |
035168ab | 684 | .seq_server = server, |
ce5039c1 AA |
685 | .seq_args = args, |
686 | .seq_res = res, | |
ce5039c1 AA |
687 | }; |
688 | struct rpc_task_setup task_setup = { | |
7c513058 | 689 | .rpc_client = clnt, |
ce5039c1 AA |
690 | .rpc_message = msg, |
691 | .callback_ops = &nfs41_call_sync_ops, | |
692 | .callback_data = &data | |
693 | }; | |
694 | ||
b257957e AB |
695 | if (privileged) |
696 | task_setup.callback_ops = &nfs41_call_priv_sync_ops; | |
ce5039c1 AA |
697 | task = rpc_run_task(&task_setup); |
698 | if (IS_ERR(task)) | |
699 | ret = PTR_ERR(task); | |
700 | else { | |
701 | ret = task->tk_status; | |
702 | rpc_put_task(task); | |
703 | } | |
704 | return ret; | |
705 | } | |
706 | ||
7c513058 BS |
707 | int _nfs4_call_sync_session(struct rpc_clnt *clnt, |
708 | struct nfs_server *server, | |
cccef3b9 AA |
709 | struct rpc_message *msg, |
710 | struct nfs4_sequence_args *args, | |
711 | struct nfs4_sequence_res *res, | |
712 | int cache_reply) | |
713 | { | |
9d12b216 TM |
714 | nfs41_init_sequence(args, res, cache_reply); |
715 | return nfs4_call_sync_sequence(clnt, server, msg, args, res, 0); | |
cccef3b9 AA |
716 | } |
717 | ||
df896455 | 718 | #else |
9d12b216 TM |
719 | static inline |
720 | void nfs41_init_sequence(struct nfs4_sequence_args *args, | |
721 | struct nfs4_sequence_res *res, int cache_reply) | |
722 | { | |
723 | } | |
724 | ||
14516c3a TM |
725 | static int nfs4_sequence_done(struct rpc_task *task, |
726 | struct nfs4_sequence_res *res) | |
df896455 | 727 | { |
14516c3a | 728 | return 1; |
df896455 | 729 | } |
cccef3b9 AA |
730 | #endif /* CONFIG_NFS_V4_1 */ |
731 | ||
7c513058 BS |
732 | int _nfs4_call_sync(struct rpc_clnt *clnt, |
733 | struct nfs_server *server, | |
cccef3b9 AA |
734 | struct rpc_message *msg, |
735 | struct nfs4_sequence_args *args, | |
736 | struct nfs4_sequence_res *res, | |
737 | int cache_reply) | |
738 | { | |
9d12b216 | 739 | nfs41_init_sequence(args, res, cache_reply); |
7c513058 | 740 | return rpc_call_sync(clnt, msg, 0); |
cccef3b9 AA |
741 | } |
742 | ||
e73b83f2 | 743 | static inline |
7c513058 BS |
744 | int nfs4_call_sync(struct rpc_clnt *clnt, |
745 | struct nfs_server *server, | |
e73b83f2 BS |
746 | struct rpc_message *msg, |
747 | struct nfs4_sequence_args *args, | |
748 | struct nfs4_sequence_res *res, | |
749 | int cache_reply) | |
750 | { | |
7c513058 BS |
751 | return server->nfs_client->cl_mvops->call_sync(clnt, server, msg, |
752 | args, res, cache_reply); | |
e73b83f2 | 753 | } |
cccef3b9 | 754 | |
38478b24 | 755 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 756 | { |
38478b24 | 757 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 758 | |
38478b24 | 759 | spin_lock(&dir->i_lock); |
40d24704 | 760 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; |
a9a4a87a | 761 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 762 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 763 | dir->i_version = cinfo->after; |
38478b24 | 764 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
765 | } |
766 | ||
e56e0b78 | 767 | struct nfs4_opendata { |
c6d00e63 | 768 | struct kref kref; |
e56e0b78 TM |
769 | struct nfs_openargs o_arg; |
770 | struct nfs_openres o_res; | |
cdd4e68b TM |
771 | struct nfs_open_confirmargs c_arg; |
772 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
773 | struct nfs4_string owner_name; |
774 | struct nfs4_string group_name; | |
e56e0b78 TM |
775 | struct nfs_fattr f_attr; |
776 | struct nfs_fattr dir_attr; | |
e56e0b78 | 777 | struct dentry *dir; |
82a2c1b7 | 778 | struct dentry *dentry; |
e56e0b78 | 779 | struct nfs4_state_owner *owner; |
aac00a8d | 780 | struct nfs4_state *state; |
e56e0b78 | 781 | struct iattr attrs; |
26e976a8 | 782 | unsigned long timestamp; |
3e309914 | 783 | unsigned int rpc_done : 1; |
24ac23ab TM |
784 | int rpc_status; |
785 | int cancelled; | |
e56e0b78 TM |
786 | }; |
787 | ||
2ced46c2 TM |
788 | |
789 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
790 | { | |
791 | p->o_res.f_attr = &p->f_attr; | |
792 | p->o_res.dir_attr = &p->dir_attr; | |
c1d51931 TM |
793 | p->o_res.seqid = p->o_arg.seqid; |
794 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 TM |
795 | p->o_res.server = p->o_arg.server; |
796 | nfs_fattr_init(&p->f_attr); | |
797 | nfs_fattr_init(&p->dir_attr); | |
6926afd1 | 798 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
799 | } |
800 | ||
82a2c1b7 | 801 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 802 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be TM |
803 | const struct iattr *attrs, |
804 | gfp_t gfp_mask) | |
e56e0b78 | 805 | { |
82a2c1b7 | 806 | struct dentry *parent = dget_parent(dentry); |
e56e0b78 TM |
807 | struct inode *dir = parent->d_inode; |
808 | struct nfs_server *server = NFS_SERVER(dir); | |
809 | struct nfs4_opendata *p; | |
810 | ||
8535b2be | 811 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
812 | if (p == NULL) |
813 | goto err; | |
8535b2be | 814 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 TM |
815 | if (p->o_arg.seqid == NULL) |
816 | goto err_free; | |
82a2c1b7 AV |
817 | nfs_sb_active(dentry->d_sb); |
818 | p->dentry = dget(dentry); | |
e56e0b78 TM |
819 | p->dir = parent; |
820 | p->owner = sp; | |
821 | atomic_inc(&sp->so_count); | |
822 | p->o_arg.fh = NFS_FH(dir); | |
dc0b027d TM |
823 | p->o_arg.open_flags = flags; |
824 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
7539bbab | 825 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 826 | p->o_arg.id = sp->so_seqid.owner_id; |
82a2c1b7 | 827 | p->o_arg.name = &dentry->d_name; |
e56e0b78 TM |
828 | p->o_arg.server = server; |
829 | p->o_arg.bitmask = server->attr_bitmask; | |
6926afd1 | 830 | p->o_arg.dir_bitmask = server->cache_consistency_bitmask; |
e56e0b78 | 831 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; |
536e43d1 | 832 | if (attrs != NULL && attrs->ia_valid != 0) { |
d77d76ff TM |
833 | u32 *s; |
834 | ||
e56e0b78 TM |
835 | p->o_arg.u.attrs = &p->attrs; |
836 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
d77d76ff TM |
837 | s = (u32 *) p->o_arg.u.verifier.data; |
838 | s[0] = jiffies; | |
839 | s[1] = current->pid; | |
e56e0b78 | 840 | } |
cdd4e68b TM |
841 | p->c_arg.fh = &p->o_res.fh; |
842 | p->c_arg.stateid = &p->o_res.stateid; | |
843 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 844 | nfs4_init_opendata_res(p); |
c6d00e63 | 845 | kref_init(&p->kref); |
e56e0b78 TM |
846 | return p; |
847 | err_free: | |
848 | kfree(p); | |
849 | err: | |
850 | dput(parent); | |
851 | return NULL; | |
852 | } | |
853 | ||
c6d00e63 | 854 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 855 | { |
c6d00e63 TM |
856 | struct nfs4_opendata *p = container_of(kref, |
857 | struct nfs4_opendata, kref); | |
82a2c1b7 | 858 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
859 | |
860 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
861 | if (p->state != NULL) |
862 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
863 | nfs4_put_state_owner(p->owner); |
864 | dput(p->dir); | |
82a2c1b7 AV |
865 | dput(p->dentry); |
866 | nfs_sb_deactive(sb); | |
6926afd1 | 867 | nfs_fattr_free_names(&p->f_attr); |
c6d00e63 TM |
868 | kfree(p); |
869 | } | |
870 | ||
871 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
872 | { | |
873 | if (p != NULL) | |
874 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
875 | } |
876 | ||
06f814a3 TM |
877 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
878 | { | |
06f814a3 TM |
879 | int ret; |
880 | ||
06f814a3 | 881 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
882 | return ret; |
883 | } | |
884 | ||
dc0b027d | 885 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
886 | { |
887 | int ret = 0; | |
dc0b027d | 888 | |
536e43d1 | 889 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
890 | goto out; |
891 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 892 | case FMODE_READ: |
88069f77 TM |
893 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
894 | && state->n_rdonly != 0; | |
6ee41268 TM |
895 | break; |
896 | case FMODE_WRITE: | |
88069f77 TM |
897 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
898 | && state->n_wronly != 0; | |
6ee41268 TM |
899 | break; |
900 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
901 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
902 | && state->n_rdwr != 0; | |
6ee41268 | 903 | } |
dc0b027d | 904 | out: |
6ee41268 TM |
905 | return ret; |
906 | } | |
907 | ||
dc0b027d | 908 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 909 | { |
652f89f6 TM |
910 | if (delegation == NULL) |
911 | return 0; | |
dc0b027d | 912 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 913 | return 0; |
15c831bf | 914 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 915 | return 0; |
b7391f44 | 916 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
917 | return 1; |
918 | } | |
919 | ||
dc0b027d | 920 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 921 | { |
dc0b027d | 922 | switch (fmode) { |
e7616923 TM |
923 | case FMODE_WRITE: |
924 | state->n_wronly++; | |
925 | break; | |
926 | case FMODE_READ: | |
927 | state->n_rdonly++; | |
928 | break; | |
929 | case FMODE_READ|FMODE_WRITE: | |
930 | state->n_rdwr++; | |
931 | } | |
dc0b027d | 932 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
933 | } |
934 | ||
dc0b027d | 935 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
936 | { |
937 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
938 | memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data)); | |
939 | memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data)); | |
dc0b027d | 940 | switch (fmode) { |
003707c7 TM |
941 | case FMODE_READ: |
942 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
943 | break; | |
944 | case FMODE_WRITE: | |
945 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
946 | break; | |
947 | case FMODE_READ|FMODE_WRITE: | |
948 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
949 | } | |
e7616923 TM |
950 | } |
951 | ||
dc0b027d | 952 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 953 | { |
8bda4e4c | 954 | write_seqlock(&state->seqlock); |
dc0b027d | 955 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 956 | write_sequnlock(&state->seqlock); |
003707c7 TM |
957 | } |
958 | ||
dc0b027d | 959 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 960 | { |
8bda4e4c TM |
961 | /* |
962 | * Protect the call to nfs4_state_set_mode_locked and | |
963 | * serialise the stateid update | |
964 | */ | |
965 | write_seqlock(&state->seqlock); | |
003707c7 TM |
966 | if (deleg_stateid != NULL) { |
967 | memcpy(state->stateid.data, deleg_stateid->data, sizeof(state->stateid.data)); | |
968 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
969 | } | |
970 | if (open_stateid != NULL) | |
dc0b027d | 971 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
972 | write_sequnlock(&state->seqlock); |
973 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 974 | update_open_stateflags(state, fmode); |
ec073428 | 975 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
976 | } |
977 | ||
dc0b027d | 978 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
979 | { |
980 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
981 | struct nfs_delegation *deleg_cur; | |
982 | int ret = 0; | |
983 | ||
dc0b027d | 984 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
985 | |
986 | rcu_read_lock(); | |
987 | deleg_cur = rcu_dereference(nfsi->delegation); | |
988 | if (deleg_cur == NULL) | |
989 | goto no_delegation; | |
990 | ||
991 | spin_lock(&deleg_cur->lock); | |
992 | if (nfsi->delegation != deleg_cur || | |
dc0b027d | 993 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
994 | goto no_delegation_unlock; |
995 | ||
996 | if (delegation == NULL) | |
997 | delegation = &deleg_cur->stateid; | |
998 | else if (memcmp(deleg_cur->stateid.data, delegation->data, NFS4_STATEID_SIZE) != 0) | |
999 | goto no_delegation_unlock; | |
1000 | ||
b7391f44 | 1001 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 1002 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
1003 | ret = 1; |
1004 | no_delegation_unlock: | |
1005 | spin_unlock(&deleg_cur->lock); | |
1006 | no_delegation: | |
1007 | rcu_read_unlock(); | |
1008 | ||
1009 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 1010 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
1011 | ret = 1; |
1012 | } | |
1013 | ||
1014 | return ret; | |
1015 | } | |
1016 | ||
1017 | ||
dc0b027d | 1018 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1019 | { |
1020 | struct nfs_delegation *delegation; | |
1021 | ||
1022 | rcu_read_lock(); | |
1023 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1024 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1025 | rcu_read_unlock(); |
1026 | return; | |
1027 | } | |
1028 | rcu_read_unlock(); | |
1029 | nfs_inode_return_delegation(inode); | |
1030 | } | |
1031 | ||
6ee41268 | 1032 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1033 | { |
1034 | struct nfs4_state *state = opendata->state; | |
1035 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1036 | struct nfs_delegation *delegation; | |
536e43d1 | 1037 | int open_mode = opendata->o_arg.open_flags & (O_EXCL|O_TRUNC); |
dc0b027d | 1038 | fmode_t fmode = opendata->o_arg.fmode; |
aac00a8d TM |
1039 | nfs4_stateid stateid; |
1040 | int ret = -EAGAIN; | |
1041 | ||
aac00a8d | 1042 | for (;;) { |
dc0b027d | 1043 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 1044 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
1045 | if (can_open_cached(state, fmode, open_mode)) { |
1046 | update_open_stateflags(state, fmode); | |
6ee41268 | 1047 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
1048 | goto out_return_state; |
1049 | } | |
1050 | spin_unlock(&state->owner->so_lock); | |
1051 | } | |
34310430 TM |
1052 | rcu_read_lock(); |
1053 | delegation = rcu_dereference(nfsi->delegation); | |
652f89f6 | 1054 | if (!can_open_delegated(delegation, fmode)) { |
34310430 | 1055 | rcu_read_unlock(); |
aac00a8d | 1056 | break; |
34310430 | 1057 | } |
aac00a8d TM |
1058 | /* Save the delegation */ |
1059 | memcpy(stateid.data, delegation->stateid.data, sizeof(stateid.data)); | |
1060 | rcu_read_unlock(); | |
af22f94a | 1061 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
1062 | if (ret != 0) |
1063 | goto out; | |
1064 | ret = -EAGAIN; | |
34310430 TM |
1065 | |
1066 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1067 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1068 | goto out_return_state; |
aac00a8d | 1069 | } |
aac00a8d TM |
1070 | out: |
1071 | return ERR_PTR(ret); | |
1072 | out_return_state: | |
1073 | atomic_inc(&state->count); | |
1074 | return state; | |
1075 | } | |
1076 | ||
24ac23ab TM |
1077 | static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) |
1078 | { | |
1079 | struct inode *inode; | |
1080 | struct nfs4_state *state = NULL; | |
003707c7 | 1081 | struct nfs_delegation *delegation; |
1b370bc2 | 1082 | int ret; |
24ac23ab | 1083 | |
aac00a8d | 1084 | if (!data->rpc_done) { |
6ee41268 | 1085 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1086 | goto out; |
1087 | } | |
1088 | ||
1b370bc2 | 1089 | ret = -EAGAIN; |
24ac23ab | 1090 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1091 | goto err; |
24ac23ab | 1092 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 1093 | ret = PTR_ERR(inode); |
03f28e3a | 1094 | if (IS_ERR(inode)) |
1b370bc2 TM |
1095 | goto err; |
1096 | ret = -ENOMEM; | |
24ac23ab TM |
1097 | state = nfs4_get_open_state(inode, data->owner); |
1098 | if (state == NULL) | |
1b370bc2 | 1099 | goto err_put_inode; |
549d6ed5 | 1100 | if (data->o_res.delegation_type != 0) { |
549d6ed5 TM |
1101 | int delegation_flags = 0; |
1102 | ||
003707c7 TM |
1103 | rcu_read_lock(); |
1104 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
1105 | if (delegation) | |
1106 | delegation_flags = delegation->flags; | |
1107 | rcu_read_unlock(); | |
652f89f6 TM |
1108 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) { |
1109 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " | |
1110 | "returning a delegation for " | |
1111 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
1112 | NFS_CLIENT(inode)->cl_server); | |
1113 | } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) | |
549d6ed5 TM |
1114 | nfs_inode_set_delegation(state->inode, |
1115 | data->owner->so_cred, | |
1116 | &data->o_res); | |
1117 | else | |
1118 | nfs_inode_reclaim_delegation(state->inode, | |
1119 | data->owner->so_cred, | |
1120 | &data->o_res); | |
1121 | } | |
34310430 TM |
1122 | |
1123 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
dc0b027d | 1124 | data->o_arg.fmode); |
24ac23ab | 1125 | iput(inode); |
aac00a8d | 1126 | out: |
24ac23ab | 1127 | return state; |
1b370bc2 TM |
1128 | err_put_inode: |
1129 | iput(inode); | |
1130 | err: | |
1131 | return ERR_PTR(ret); | |
24ac23ab TM |
1132 | } |
1133 | ||
864472e9 TM |
1134 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1135 | { | |
1136 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1137 | struct nfs_open_context *ctx; | |
1138 | ||
1139 | spin_lock(&state->inode->i_lock); | |
1140 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1141 | if (ctx->state != state) | |
1142 | continue; | |
1143 | get_nfs_open_context(ctx); | |
1144 | spin_unlock(&state->inode->i_lock); | |
1145 | return ctx; | |
1146 | } | |
1147 | spin_unlock(&state->inode->i_lock); | |
1148 | return ERR_PTR(-ENOENT); | |
1149 | } | |
1150 | ||
6f220ed5 TM |
1151 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
1152 | { | |
1153 | struct nfs4_opendata *opendata; | |
1154 | ||
3d4ff43d | 1155 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, NULL, GFP_NOFS); |
6f220ed5 TM |
1156 | if (opendata == NULL) |
1157 | return ERR_PTR(-ENOMEM); | |
1158 | opendata->state = state; | |
1159 | atomic_inc(&state->count); | |
1160 | return opendata; | |
1161 | } | |
1162 | ||
dc0b027d | 1163 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1164 | { |
2ced46c2 | 1165 | struct nfs4_state *newstate; |
864472e9 TM |
1166 | int ret; |
1167 | ||
dc0b027d TM |
1168 | opendata->o_arg.open_flags = 0; |
1169 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1170 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1171 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1172 | nfs4_init_opendata_res(opendata); | |
b257957e | 1173 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1174 | if (ret != 0) |
1175 | return ret; | |
2ced46c2 | 1176 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1177 | if (IS_ERR(newstate)) |
1178 | return PTR_ERR(newstate); | |
643168c2 | 1179 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1180 | *res = newstate; |
864472e9 TM |
1181 | return 0; |
1182 | } | |
1183 | ||
1184 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1185 | { | |
864472e9 | 1186 | struct nfs4_state *newstate; |
864472e9 TM |
1187 | int ret; |
1188 | ||
1189 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1190 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
1191 | smp_rmb(); |
1192 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1193 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1194 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1195 | if (ret != 0) |
1196 | return ret; | |
2ced46c2 TM |
1197 | if (newstate != state) |
1198 | return -ESTALE; | |
864472e9 TM |
1199 | } |
1200 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1201 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1202 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1203 | if (ret != 0) |
1204 | return ret; | |
2ced46c2 TM |
1205 | if (newstate != state) |
1206 | return -ESTALE; | |
864472e9 TM |
1207 | } |
1208 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1209 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1210 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1211 | if (ret != 0) |
1212 | return ret; | |
2ced46c2 TM |
1213 | if (newstate != state) |
1214 | return -ESTALE; | |
864472e9 | 1215 | } |
1ac7e2fd TM |
1216 | /* |
1217 | * We may have performed cached opens for all three recoveries. | |
1218 | * Check if we need to update the current stateid. | |
1219 | */ | |
1220 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
1221 | memcmp(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)) != 0) { | |
8bda4e4c | 1222 | write_seqlock(&state->seqlock); |
1ac7e2fd TM |
1223 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
1224 | memcpy(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)); | |
8bda4e4c | 1225 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1226 | } |
864472e9 TM |
1227 | return 0; |
1228 | } | |
1229 | ||
1da177e4 LT |
1230 | /* |
1231 | * OPEN_RECLAIM: | |
1232 | * reclaim state on the server after a reboot. | |
1da177e4 | 1233 | */ |
539cd03a | 1234 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1235 | { |
1ac7e2fd | 1236 | struct nfs_delegation *delegation; |
864472e9 | 1237 | struct nfs4_opendata *opendata; |
dc0b027d | 1238 | fmode_t delegation_type = 0; |
1da177e4 LT |
1239 | int status; |
1240 | ||
6f220ed5 TM |
1241 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1242 | if (IS_ERR(opendata)) | |
1243 | return PTR_ERR(opendata); | |
864472e9 TM |
1244 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
1245 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
1246 | rcu_read_lock(); |
1247 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1248 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1249 | delegation_type = delegation->type; |
1ac7e2fd | 1250 | rcu_read_unlock(); |
864472e9 TM |
1251 | opendata->o_arg.u.delegation_type = delegation_type; |
1252 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1253 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1254 | return status; |
1255 | } | |
1256 | ||
539cd03a | 1257 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1258 | { |
1259 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1260 | struct nfs4_exception exception = { }; | |
1261 | int err; | |
1262 | do { | |
539cd03a | 1263 | err = _nfs4_do_open_reclaim(ctx, state); |
168667c4 | 1264 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1265 | break; |
1266 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1267 | } while (exception.retry); |
1268 | return err; | |
1269 | } | |
1270 | ||
864472e9 TM |
1271 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1272 | { | |
1273 | struct nfs_open_context *ctx; | |
1274 | int ret; | |
1275 | ||
1276 | ctx = nfs4_state_find_open_context(state); | |
1277 | if (IS_ERR(ctx)) | |
1278 | return PTR_ERR(ctx); | |
539cd03a | 1279 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1280 | put_nfs_open_context(ctx); |
1281 | return ret; | |
1282 | } | |
1283 | ||
13437e12 | 1284 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 1285 | { |
e56e0b78 | 1286 | struct nfs4_opendata *opendata; |
864472e9 | 1287 | int ret; |
1da177e4 | 1288 | |
6f220ed5 TM |
1289 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1290 | if (IS_ERR(opendata)) | |
1291 | return PTR_ERR(opendata); | |
e56e0b78 | 1292 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
13437e12 | 1293 | memcpy(opendata->o_arg.u.delegation.data, stateid->data, |
e56e0b78 | 1294 | sizeof(opendata->o_arg.u.delegation.data)); |
864472e9 | 1295 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 1296 | nfs4_opendata_put(opendata); |
864472e9 | 1297 | return ret; |
1da177e4 LT |
1298 | } |
1299 | ||
13437e12 | 1300 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
1301 | { |
1302 | struct nfs4_exception exception = { }; | |
539cd03a | 1303 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
1304 | int err; |
1305 | do { | |
13437e12 | 1306 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
1307 | switch (err) { |
1308 | case 0: | |
965b5d67 TM |
1309 | case -ENOENT: |
1310 | case -ESTALE: | |
1311 | goto out; | |
bcfa49f6 RL |
1312 | case -NFS4ERR_BADSESSION: |
1313 | case -NFS4ERR_BADSLOT: | |
1314 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1315 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1316 | case -NFS4ERR_DEADSESSION: | |
0400a6b0 | 1317 | nfs4_schedule_session_recovery(server->nfs_client->cl_session); |
bcfa49f6 | 1318 | goto out; |
1da177e4 LT |
1319 | case -NFS4ERR_STALE_CLIENTID: |
1320 | case -NFS4ERR_STALE_STATEID: | |
1321 | case -NFS4ERR_EXPIRED: | |
1322 | /* Don't recall a delegation if it was lost */ | |
0400a6b0 | 1323 | nfs4_schedule_lease_recovery(server->nfs_client); |
965b5d67 TM |
1324 | goto out; |
1325 | case -ERESTARTSYS: | |
1326 | /* | |
1327 | * The show must go on: exit, but mark the | |
1328 | * stateid as needing recovery. | |
1329 | */ | |
1330 | case -NFS4ERR_ADMIN_REVOKED: | |
1331 | case -NFS4ERR_BAD_STATEID: | |
0400a6b0 | 1332 | nfs4_schedule_stateid_recovery(server, state); |
168667c4 TM |
1333 | case -EKEYEXPIRED: |
1334 | /* | |
1335 | * User RPCSEC_GSS context has expired. | |
1336 | * We cannot recover this stateid now, so | |
1337 | * skip it and allow recovery thread to | |
1338 | * proceed. | |
1339 | */ | |
965b5d67 TM |
1340 | case -ENOMEM: |
1341 | err = 0; | |
1342 | goto out; | |
1da177e4 LT |
1343 | } |
1344 | err = nfs4_handle_exception(server, err, &exception); | |
1345 | } while (exception.retry); | |
965b5d67 | 1346 | out: |
1da177e4 LT |
1347 | return err; |
1348 | } | |
1349 | ||
cdd4e68b TM |
1350 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1351 | { | |
1352 | struct nfs4_opendata *data = calldata; | |
1353 | ||
1354 | data->rpc_status = task->tk_status; | |
26e976a8 | 1355 | if (data->rpc_status == 0) { |
cdd4e68b TM |
1356 | memcpy(data->o_res.stateid.data, data->c_res.stateid.data, |
1357 | sizeof(data->o_res.stateid.data)); | |
bb22629e | 1358 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1359 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1360 | data->rpc_done = 1; |
26e976a8 | 1361 | } |
cdd4e68b TM |
1362 | } |
1363 | ||
1364 | static void nfs4_open_confirm_release(void *calldata) | |
1365 | { | |
1366 | struct nfs4_opendata *data = calldata; | |
1367 | struct nfs4_state *state = NULL; | |
1368 | ||
1369 | /* If this request hasn't been cancelled, do nothing */ | |
1370 | if (data->cancelled == 0) | |
1371 | goto out_free; | |
1372 | /* In case of error, no cleanup! */ | |
3e309914 | 1373 | if (!data->rpc_done) |
cdd4e68b | 1374 | goto out_free; |
cdd4e68b | 1375 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1376 | if (!IS_ERR(state)) |
643168c2 | 1377 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1378 | out_free: |
c6d00e63 | 1379 | nfs4_opendata_put(data); |
cdd4e68b TM |
1380 | } |
1381 | ||
1382 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1383 | .rpc_call_done = nfs4_open_confirm_done, |
1384 | .rpc_release = nfs4_open_confirm_release, | |
1385 | }; | |
1386 | ||
1387 | /* | |
1388 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1389 | */ | |
1390 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1391 | { | |
1392 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1393 | struct rpc_task *task; | |
5138fde0 TM |
1394 | struct rpc_message msg = { |
1395 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1396 | .rpc_argp = &data->c_arg, | |
1397 | .rpc_resp = &data->c_res, | |
1398 | .rpc_cred = data->owner->so_cred, | |
1399 | }; | |
c970aa85 TM |
1400 | struct rpc_task_setup task_setup_data = { |
1401 | .rpc_client = server->client, | |
5138fde0 | 1402 | .rpc_message = &msg, |
c970aa85 TM |
1403 | .callback_ops = &nfs4_open_confirm_ops, |
1404 | .callback_data = data, | |
101070ca | 1405 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1406 | .flags = RPC_TASK_ASYNC, |
1407 | }; | |
1da177e4 LT |
1408 | int status; |
1409 | ||
c6d00e63 | 1410 | kref_get(&data->kref); |
3e309914 TM |
1411 | data->rpc_done = 0; |
1412 | data->rpc_status = 0; | |
5138fde0 | 1413 | data->timestamp = jiffies; |
c970aa85 | 1414 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1415 | if (IS_ERR(task)) |
cdd4e68b | 1416 | return PTR_ERR(task); |
cdd4e68b TM |
1417 | status = nfs4_wait_for_completion_rpc_task(task); |
1418 | if (status != 0) { | |
1419 | data->cancelled = 1; | |
1420 | smp_wmb(); | |
1421 | } else | |
1422 | status = data->rpc_status; | |
e6b3c4db | 1423 | rpc_put_task(task); |
1da177e4 LT |
1424 | return status; |
1425 | } | |
1426 | ||
24ac23ab | 1427 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1428 | { |
24ac23ab TM |
1429 | struct nfs4_opendata *data = calldata; |
1430 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 1431 | |
24ac23ab TM |
1432 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
1433 | return; | |
aac00a8d TM |
1434 | /* |
1435 | * Check if we still need to send an OPEN call, or if we can use | |
1436 | * a delegation instead. | |
1437 | */ | |
1438 | if (data->state != NULL) { | |
1439 | struct nfs_delegation *delegation; | |
1440 | ||
dc0b027d | 1441 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1442 | goto out_no_action; |
aac00a8d TM |
1443 | rcu_read_lock(); |
1444 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
652f89f6 TM |
1445 | if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR && |
1446 | can_open_delegated(delegation, data->o_arg.fmode)) | |
1447 | goto unlock_no_action; | |
aac00a8d TM |
1448 | rcu_read_unlock(); |
1449 | } | |
24ac23ab | 1450 | /* Update sequence id. */ |
48c22eb2 | 1451 | data->o_arg.id = sp->so_seqid.owner_id; |
1f0e890d | 1452 | data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; |
6f220ed5 | 1453 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 1454 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
6f220ed5 TM |
1455 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1456 | } | |
26e976a8 | 1457 | data->timestamp = jiffies; |
035168ab | 1458 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 1459 | &data->o_arg.seq_args, |
9d12b216 | 1460 | &data->o_res.seq_res, task)) |
d898528c | 1461 | return; |
5138fde0 | 1462 | rpc_call_start(task); |
6ee41268 | 1463 | return; |
652f89f6 TM |
1464 | unlock_no_action: |
1465 | rcu_read_unlock(); | |
6ee41268 TM |
1466 | out_no_action: |
1467 | task->tk_action = NULL; | |
1468 | ||
24ac23ab | 1469 | } |
1da177e4 | 1470 | |
b257957e AB |
1471 | static void nfs4_recover_open_prepare(struct rpc_task *task, void *calldata) |
1472 | { | |
1473 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
1474 | nfs4_open_prepare(task, calldata); | |
1475 | } | |
1476 | ||
24ac23ab TM |
1477 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1478 | { | |
1479 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1480 | |
24ac23ab | 1481 | data->rpc_status = task->tk_status; |
d898528c | 1482 | |
14516c3a TM |
1483 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1484 | return; | |
d898528c | 1485 | |
24ac23ab TM |
1486 | if (task->tk_status == 0) { |
1487 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1488 | case S_IFREG: |
1489 | break; | |
1490 | case S_IFLNK: | |
24ac23ab | 1491 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1492 | break; |
1493 | case S_IFDIR: | |
24ac23ab | 1494 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1495 | break; |
1496 | default: | |
24ac23ab | 1497 | data->rpc_status = -ENOTDIR; |
6f926b5b | 1498 | } |
26e976a8 | 1499 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1500 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1501 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1502 | } |
3e309914 | 1503 | data->rpc_done = 1; |
24ac23ab | 1504 | } |
6f926b5b | 1505 | |
24ac23ab TM |
1506 | static void nfs4_open_release(void *calldata) |
1507 | { | |
1508 | struct nfs4_opendata *data = calldata; | |
1509 | struct nfs4_state *state = NULL; | |
1510 | ||
1511 | /* If this request hasn't been cancelled, do nothing */ | |
1512 | if (data->cancelled == 0) | |
1513 | goto out_free; | |
1514 | /* In case of error, no cleanup! */ | |
3e309914 | 1515 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1516 | goto out_free; |
1517 | /* In case we need an open_confirm, no cleanup! */ | |
1518 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1519 | goto out_free; | |
24ac23ab | 1520 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1521 | if (!IS_ERR(state)) |
643168c2 | 1522 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1523 | out_free: |
c6d00e63 | 1524 | nfs4_opendata_put(data); |
24ac23ab TM |
1525 | } |
1526 | ||
1527 | static const struct rpc_call_ops nfs4_open_ops = { | |
1528 | .rpc_call_prepare = nfs4_open_prepare, | |
1529 | .rpc_call_done = nfs4_open_done, | |
1530 | .rpc_release = nfs4_open_release, | |
1531 | }; | |
1532 | ||
b257957e AB |
1533 | static const struct rpc_call_ops nfs4_recover_open_ops = { |
1534 | .rpc_call_prepare = nfs4_recover_open_prepare, | |
1535 | .rpc_call_done = nfs4_open_done, | |
1536 | .rpc_release = nfs4_open_release, | |
1537 | }; | |
1538 | ||
1539 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) | |
24ac23ab TM |
1540 | { |
1541 | struct inode *dir = data->dir->d_inode; | |
1542 | struct nfs_server *server = NFS_SERVER(dir); | |
1543 | struct nfs_openargs *o_arg = &data->o_arg; | |
1544 | struct nfs_openres *o_res = &data->o_res; | |
1545 | struct rpc_task *task; | |
5138fde0 TM |
1546 | struct rpc_message msg = { |
1547 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1548 | .rpc_argp = o_arg, | |
1549 | .rpc_resp = o_res, | |
1550 | .rpc_cred = data->owner->so_cred, | |
1551 | }; | |
c970aa85 TM |
1552 | struct rpc_task_setup task_setup_data = { |
1553 | .rpc_client = server->client, | |
5138fde0 | 1554 | .rpc_message = &msg, |
c970aa85 TM |
1555 | .callback_ops = &nfs4_open_ops, |
1556 | .callback_data = data, | |
101070ca | 1557 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1558 | .flags = RPC_TASK_ASYNC, |
1559 | }; | |
24ac23ab TM |
1560 | int status; |
1561 | ||
9d12b216 | 1562 | nfs41_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 1563 | kref_get(&data->kref); |
3e309914 TM |
1564 | data->rpc_done = 0; |
1565 | data->rpc_status = 0; | |
2ced46c2 | 1566 | data->cancelled = 0; |
b257957e AB |
1567 | if (isrecover) |
1568 | task_setup_data.callback_ops = &nfs4_recover_open_ops; | |
c970aa85 | 1569 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1570 | if (IS_ERR(task)) |
1571 | return PTR_ERR(task); | |
1572 | status = nfs4_wait_for_completion_rpc_task(task); | |
1573 | if (status != 0) { | |
1574 | data->cancelled = 1; | |
1575 | smp_wmb(); | |
1576 | } else | |
1577 | status = data->rpc_status; | |
1578 | rpc_put_task(task); | |
1579 | ||
1580 | return status; | |
1581 | } | |
1582 | ||
1583 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1584 | { | |
1585 | struct inode *dir = data->dir->d_inode; | |
1586 | struct nfs_openres *o_res = &data->o_res; | |
1587 | int status; | |
1588 | ||
1589 | status = nfs4_run_open_task(data, 1); | |
1590 | if (status != 0 || !data->rpc_done) | |
1591 | return status; | |
1592 | ||
6926afd1 TM |
1593 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
1594 | ||
b257957e AB |
1595 | nfs_refresh_inode(dir, o_res->dir_attr); |
1596 | ||
1597 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { | |
1598 | status = _nfs4_proc_open_confirm(data); | |
1599 | if (status != 0) | |
1600 | return status; | |
1601 | } | |
1602 | ||
1603 | return status; | |
1604 | } | |
1605 | ||
1606 | /* | |
1607 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1608 | */ | |
1609 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1610 | { | |
1611 | struct inode *dir = data->dir->d_inode; | |
1612 | struct nfs_server *server = NFS_SERVER(dir); | |
1613 | struct nfs_openargs *o_arg = &data->o_arg; | |
1614 | struct nfs_openres *o_res = &data->o_res; | |
1615 | int status; | |
1616 | ||
1617 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
1618 | if (!data->rpc_done) |
1619 | return status; | |
1620 | if (status != 0) { | |
1621 | if (status == -NFS4ERR_BADNAME && | |
1622 | !(o_arg->open_flags & O_CREAT)) | |
1623 | return -ENOENT; | |
24ac23ab | 1624 | return status; |
08ef7bd3 | 1625 | } |
24ac23ab | 1626 | |
6926afd1 TM |
1627 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
1628 | ||
56ae19f3 TM |
1629 | if (o_arg->open_flags & O_CREAT) { |
1630 | update_changeattr(dir, &o_res->cinfo); | |
1631 | nfs_post_op_update_inode(dir, o_res->dir_attr); | |
1632 | } else | |
1633 | nfs_refresh_inode(dir, o_res->dir_attr); | |
0df5dd4a TM |
1634 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1635 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1636 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1637 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1638 | if (status != 0) |
24ac23ab | 1639 | return status; |
1da177e4 LT |
1640 | } |
1641 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1642 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1643 | return 0; |
1da177e4 LT |
1644 | } |
1645 | ||
d83217c1 | 1646 | static int nfs4_client_recover_expired_lease(struct nfs_client *clp) |
58d9714a | 1647 | { |
a78cb57a | 1648 | unsigned int loop; |
6b30954e | 1649 | int ret; |
58d9714a | 1650 | |
a78cb57a | 1651 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { |
65de872e | 1652 | ret = nfs4_wait_clnt_recover(clp); |
6b30954e | 1653 | if (ret != 0) |
a78cb57a | 1654 | break; |
e598d843 TM |
1655 | if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) && |
1656 | !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state)) | |
6b30954e | 1657 | break; |
0400a6b0 | 1658 | nfs4_schedule_state_manager(clp); |
a78cb57a | 1659 | ret = -EIO; |
6b30954e | 1660 | } |
a78cb57a | 1661 | return ret; |
58d9714a TM |
1662 | } |
1663 | ||
d83217c1 AA |
1664 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1665 | { | |
1666 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1667 | } | |
1668 | ||
1da177e4 LT |
1669 | /* |
1670 | * OPEN_EXPIRED: | |
1671 | * reclaim state on the server after a network partition. | |
1672 | * Assumes caller holds the appropriate lock | |
1673 | */ | |
539cd03a | 1674 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1675 | { |
e56e0b78 | 1676 | struct nfs4_opendata *opendata; |
864472e9 | 1677 | int ret; |
1da177e4 | 1678 | |
6f220ed5 TM |
1679 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1680 | if (IS_ERR(opendata)) | |
1681 | return PTR_ERR(opendata); | |
864472e9 | 1682 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1683 | if (ret == -ESTALE) |
3d4ff43d | 1684 | d_drop(ctx->dentry); |
c6d00e63 | 1685 | nfs4_opendata_put(opendata); |
864472e9 | 1686 | return ret; |
1da177e4 LT |
1687 | } |
1688 | ||
a9ed2e25 | 1689 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1690 | { |
539cd03a | 1691 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1692 | struct nfs4_exception exception = { }; |
1693 | int err; | |
1694 | ||
1695 | do { | |
539cd03a | 1696 | err = _nfs4_open_expired(ctx, state); |
a9ed2e25 TM |
1697 | switch (err) { |
1698 | default: | |
1699 | goto out; | |
1700 | case -NFS4ERR_GRACE: | |
1701 | case -NFS4ERR_DELAY: | |
1702 | nfs4_handle_exception(server, err, &exception); | |
1703 | err = 0; | |
1704 | } | |
202b50dc | 1705 | } while (exception.retry); |
a9ed2e25 | 1706 | out: |
202b50dc TM |
1707 | return err; |
1708 | } | |
1709 | ||
1da177e4 LT |
1710 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1711 | { | |
1da177e4 | 1712 | struct nfs_open_context *ctx; |
864472e9 | 1713 | int ret; |
1da177e4 | 1714 | |
864472e9 TM |
1715 | ctx = nfs4_state_find_open_context(state); |
1716 | if (IS_ERR(ctx)) | |
1717 | return PTR_ERR(ctx); | |
539cd03a | 1718 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1719 | put_nfs_open_context(ctx); |
1720 | return ret; | |
1da177e4 LT |
1721 | } |
1722 | ||
f062eb6c | 1723 | #if defined(CONFIG_NFS_V4_1) |
b01dd1d8 | 1724 | static int nfs41_check_expired_stateid(struct nfs4_state *state, nfs4_stateid *stateid, unsigned int flags) |
f062eb6c | 1725 | { |
b01dd1d8 | 1726 | int status = NFS_OK; |
f062eb6c BS |
1727 | struct nfs_server *server = NFS_SERVER(state->inode); |
1728 | ||
b01dd1d8 BS |
1729 | if (state->flags & flags) { |
1730 | status = nfs41_test_stateid(server, stateid); | |
1731 | if (status != NFS_OK) { | |
1732 | nfs41_free_stateid(server, stateid); | |
1733 | state->flags &= ~flags; | |
1734 | } | |
1735 | } | |
1736 | return status; | |
1737 | } | |
1738 | ||
1739 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
1740 | { | |
1741 | int deleg_status, open_status; | |
1742 | int deleg_flags = 1 << NFS_DELEGATED_STATE; | |
1743 | int open_flags = (1 << NFS_O_RDONLY_STATE) | (1 << NFS_O_WRONLY_STATE) | (1 << NFS_O_RDWR_STATE); | |
1744 | ||
1745 | deleg_status = nfs41_check_expired_stateid(state, &state->stateid, deleg_flags); | |
1746 | open_status = nfs41_check_expired_stateid(state, &state->open_stateid, open_flags); | |
1747 | ||
1748 | if ((deleg_status == NFS_OK) && (open_status == NFS_OK)) | |
1749 | return NFS_OK; | |
f062eb6c BS |
1750 | return nfs4_open_expired(sp, state); |
1751 | } | |
1752 | #endif | |
1753 | ||
aa53ed54 JL |
1754 | /* |
1755 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1756 | * fields corresponding to attributes that were used to store the verifier. | |
1757 | * Make sure we clobber those fields in the later setattr call | |
1758 | */ | |
1759 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1760 | { | |
1761 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1762 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1763 | sattr->ia_valid |= ATTR_ATIME; | |
1764 | ||
1765 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1766 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1767 | sattr->ia_valid |= ATTR_MTIME; | |
1768 | } | |
1769 | ||
1da177e4 | 1770 | /* |
24ac23ab | 1771 | * Returns a referenced nfs4_state |
1da177e4 | 1772 | */ |
82a2c1b7 | 1773 | 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 |
1774 | { |
1775 | struct nfs4_state_owner *sp; | |
1776 | struct nfs4_state *state = NULL; | |
1777 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1778 | struct nfs4_opendata *opendata; |
aac00a8d | 1779 | int status; |
1da177e4 LT |
1780 | |
1781 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 1782 | status = -ENOMEM; |
d1e284d5 TM |
1783 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
1784 | if (sp == NULL) { | |
1da177e4 LT |
1785 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
1786 | goto out_err; | |
1787 | } | |
58d9714a TM |
1788 | status = nfs4_recover_expired_lease(server); |
1789 | if (status != 0) | |
b4454fe1 | 1790 | goto err_put_state_owner; |
82a2c1b7 AV |
1791 | if (dentry->d_inode != NULL) |
1792 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 1793 | status = -ENOMEM; |
82a2c1b7 | 1794 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, GFP_KERNEL); |
e56e0b78 | 1795 | if (opendata == NULL) |
95d35cb4 | 1796 | goto err_put_state_owner; |
1da177e4 | 1797 | |
82a2c1b7 AV |
1798 | if (dentry->d_inode != NULL) |
1799 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 1800 | |
24ac23ab | 1801 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1802 | if (status != 0) |
c6d00e63 | 1803 | goto err_opendata_put; |
1da177e4 | 1804 | |
24ac23ab | 1805 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1806 | status = PTR_ERR(state); |
1807 | if (IS_ERR(state)) | |
c6d00e63 | 1808 | goto err_opendata_put; |
0df5dd4a | 1809 | if (server->caps & NFS_CAP_POSIX_LOCK) |
8e469ebd | 1810 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); |
0ab64e0e TM |
1811 | |
1812 | if (opendata->o_arg.open_flags & O_EXCL) { | |
1813 | nfs4_exclusive_attrset(opendata, sattr); | |
1814 | ||
1815 | nfs_fattr_init(opendata->o_res.f_attr); | |
1816 | status = nfs4_do_setattr(state->inode, cred, | |
1817 | opendata->o_res.f_attr, sattr, | |
1818 | state); | |
1819 | if (status == 0) | |
1820 | nfs_setattr_update_inode(state->inode, sattr); | |
1821 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
1822 | } | |
c6d00e63 | 1823 | nfs4_opendata_put(opendata); |
1da177e4 | 1824 | nfs4_put_state_owner(sp); |
1da177e4 LT |
1825 | *res = state; |
1826 | return 0; | |
c6d00e63 TM |
1827 | err_opendata_put: |
1828 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
1829 | err_put_state_owner: |
1830 | nfs4_put_state_owner(sp); | |
1da177e4 | 1831 | out_err: |
1da177e4 LT |
1832 | *res = NULL; |
1833 | return status; | |
1834 | } | |
1835 | ||
1836 | ||
82a2c1b7 | 1837 | 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 |
1838 | { |
1839 | struct nfs4_exception exception = { }; | |
1840 | struct nfs4_state *res; | |
1841 | int status; | |
1842 | ||
1843 | do { | |
82a2c1b7 | 1844 | status = _nfs4_do_open(dir, dentry, fmode, flags, sattr, cred, &res); |
1da177e4 LT |
1845 | if (status == 0) |
1846 | break; | |
1847 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1848 | * book-keeping w.r.t. state-changing operations | |
1849 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1850 | * It is actually a sign of a bug on the client or on the server. | |
1851 | * | |
1852 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1853 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1854 | * have unhashed the old state_owner for us, and that we can |
1855 | * therefore safely retry using a new one. We should still warn | |
1856 | * the user though... | |
1857 | */ | |
1858 | if (status == -NFS4ERR_BAD_SEQID) { | |
6f43ddcc TM |
1859 | printk(KERN_WARNING "NFS: v4 server %s " |
1860 | " returned a bad sequence-id error!\n", | |
1861 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1862 | exception.retry = 1; |
1863 | continue; | |
1864 | } | |
550f5747 TM |
1865 | /* |
1866 | * BAD_STATEID on OPEN means that the server cancelled our | |
1867 | * state before it received the OPEN_CONFIRM. | |
1868 | * Recover by retrying the request as per the discussion | |
1869 | * on Page 181 of RFC3530. | |
1870 | */ | |
1871 | if (status == -NFS4ERR_BAD_STATEID) { | |
1872 | exception.retry = 1; | |
1873 | continue; | |
1874 | } | |
aac00a8d TM |
1875 | if (status == -EAGAIN) { |
1876 | /* We must have found a delegation */ | |
1877 | exception.retry = 1; | |
1878 | continue; | |
1879 | } | |
1da177e4 LT |
1880 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1881 | status, &exception)); | |
1882 | } while (exception.retry); | |
1883 | return res; | |
1884 | } | |
1885 | ||
659bfcd6 TM |
1886 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1887 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1888 | struct nfs4_state *state) | |
1da177e4 | 1889 | { |
3e4f6290 | 1890 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1891 | struct nfs_setattrargs arg = { |
3e4f6290 | 1892 | .fh = NFS_FH(inode), |
1da177e4 LT |
1893 | .iap = sattr, |
1894 | .server = server, | |
1895 | .bitmask = server->attr_bitmask, | |
1896 | }; | |
1897 | struct nfs_setattrres res = { | |
1898 | .fattr = fattr, | |
1899 | .server = server, | |
1900 | }; | |
1901 | struct rpc_message msg = { | |
659bfcd6 TM |
1902 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
1903 | .rpc_argp = &arg, | |
1904 | .rpc_resp = &res, | |
1905 | .rpc_cred = cred, | |
1da177e4 | 1906 | }; |
26e976a8 | 1907 | unsigned long timestamp = jiffies; |
65e4308d | 1908 | int status; |
1da177e4 | 1909 | |
0e574af1 | 1910 | nfs_fattr_init(fattr); |
1da177e4 | 1911 | |
3e4f6290 TM |
1912 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) { |
1913 | /* Use that stateid */ | |
1914 | } else if (state != NULL) { | |
77041ed9 | 1915 | nfs4_copy_stateid(&arg.stateid, state, current->files, current->tgid); |
08e9eac4 | 1916 | } else |
1da177e4 LT |
1917 | memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid)); |
1918 | ||
7c513058 | 1919 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
1920 | if (status == 0 && state != NULL) |
1921 | renew_lease(server, timestamp); | |
65e4308d | 1922 | return status; |
1da177e4 LT |
1923 | } |
1924 | ||
659bfcd6 TM |
1925 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1926 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1927 | struct nfs4_state *state) | |
1da177e4 | 1928 | { |
3e4f6290 | 1929 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
1930 | struct nfs4_exception exception = { }; |
1931 | int err; | |
1932 | do { | |
1933 | err = nfs4_handle_exception(server, | |
659bfcd6 | 1934 | _nfs4_do_setattr(inode, cred, fattr, sattr, state), |
1da177e4 LT |
1935 | &exception); |
1936 | } while (exception.retry); | |
1937 | return err; | |
1938 | } | |
1939 | ||
1940 | struct nfs4_closedata { | |
1941 | struct inode *inode; | |
1942 | struct nfs4_state *state; | |
1943 | struct nfs_closeargs arg; | |
1944 | struct nfs_closeres res; | |
516a6af6 | 1945 | struct nfs_fattr fattr; |
26e976a8 | 1946 | unsigned long timestamp; |
f7e8917a FI |
1947 | bool roc; |
1948 | u32 roc_barrier; | |
1da177e4 LT |
1949 | }; |
1950 | ||
963d8fe5 | 1951 | static void nfs4_free_closedata(void *data) |
9512135d | 1952 | { |
963d8fe5 TM |
1953 | struct nfs4_closedata *calldata = data; |
1954 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 1955 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 1956 | |
f7e8917a FI |
1957 | if (calldata->roc) |
1958 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
1959 | nfs4_put_open_state(calldata->state); |
1960 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 1961 | nfs4_put_state_owner(sp); |
643168c2 | 1962 | nfs_sb_deactive(sb); |
9512135d TM |
1963 | kfree(calldata); |
1964 | } | |
1965 | ||
88069f77 TM |
1966 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
1967 | fmode_t fmode) | |
1968 | { | |
1969 | spin_lock(&state->owner->so_lock); | |
1970 | if (!(fmode & FMODE_READ)) | |
1971 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1972 | if (!(fmode & FMODE_WRITE)) | |
1973 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1974 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1975 | spin_unlock(&state->owner->so_lock); | |
1976 | } | |
1977 | ||
963d8fe5 | 1978 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 1979 | { |
963d8fe5 | 1980 | struct nfs4_closedata *calldata = data; |
1da177e4 | 1981 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
1982 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
1983 | ||
14516c3a TM |
1984 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
1985 | return; | |
1da177e4 LT |
1986 | /* hmm. we are done with the inode, and in the process of freeing |
1987 | * the state_owner. we keep this around to process errors | |
1988 | */ | |
1da177e4 LT |
1989 | switch (task->tk_status) { |
1990 | case 0: | |
f7e8917a FI |
1991 | if (calldata->roc) |
1992 | pnfs_roc_set_barrier(state->inode, | |
1993 | calldata->roc_barrier); | |
45328c35 | 1994 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 1995 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
1996 | nfs4_close_clear_stateid_flags(state, |
1997 | calldata->arg.fmode); | |
1da177e4 LT |
1998 | break; |
1999 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
2000 | case -NFS4ERR_OLD_STATEID: |
2001 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2002 | case -NFS4ERR_EXPIRED: |
dc0b027d | 2003 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2004 | break; |
1da177e4 | 2005 | default: |
72211dbe TM |
2006 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
2007 | rpc_restart_call_prepare(task); | |
1da177e4 | 2008 | } |
72211dbe | 2009 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2010 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
1da177e4 LT |
2011 | } |
2012 | ||
4ce70ada | 2013 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2014 | { |
4ce70ada | 2015 | struct nfs4_closedata *calldata = data; |
9512135d | 2016 | struct nfs4_state *state = calldata->state; |
88069f77 | 2017 | int call_close = 0; |
9512135d | 2018 | |
963d8fe5 | 2019 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 2020 | return; |
003707c7 | 2021 | |
88069f77 TM |
2022 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
2023 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 2024 | spin_lock(&state->owner->so_lock); |
003707c7 | 2025 | /* Calculate the change in open mode */ |
e7616923 | 2026 | if (state->n_rdwr == 0) { |
003707c7 | 2027 | if (state->n_rdonly == 0) { |
88069f77 TM |
2028 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
2029 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2030 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
2031 | } |
2032 | if (state->n_wronly == 0) { | |
88069f77 TM |
2033 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
2034 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2035 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 2036 | } |
e7616923 | 2037 | } |
4cecb76f | 2038 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2039 | |
2040 | if (!call_close) { | |
963d8fe5 TM |
2041 | /* Note: exit _without_ calling nfs4_close_done */ |
2042 | task->tk_action = NULL; | |
9512135d TM |
2043 | return; |
2044 | } | |
88069f77 | 2045 | |
f7e8917a | 2046 | if (calldata->arg.fmode == 0) { |
88069f77 | 2047 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a FI |
2048 | if (calldata->roc && |
2049 | pnfs_roc_drain(calldata->inode, &calldata->roc_barrier)) { | |
2050 | rpc_sleep_on(&NFS_SERVER(calldata->inode)->roc_rpcwaitq, | |
2051 | task, NULL); | |
2052 | return; | |
2053 | } | |
2054 | } | |
88069f77 | 2055 | |
516a6af6 | 2056 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2057 | calldata->timestamp = jiffies; |
035168ab | 2058 | if (nfs4_setup_sequence(NFS_SERVER(calldata->inode), |
9d12b216 TM |
2059 | &calldata->arg.seq_args, |
2060 | &calldata->res.seq_res, | |
2061 | task)) | |
19ddab06 | 2062 | return; |
5138fde0 | 2063 | rpc_call_start(task); |
1da177e4 LT |
2064 | } |
2065 | ||
963d8fe5 | 2066 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2067 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2068 | .rpc_call_done = nfs4_close_done, |
2069 | .rpc_release = nfs4_free_closedata, | |
2070 | }; | |
2071 | ||
1da177e4 LT |
2072 | /* |
2073 | * It is possible for data to be read/written from a mem-mapped file | |
2074 | * after the sys_close call (which hits the vfs layer as a flush). | |
2075 | * This means that we can't safely call nfsv4 close on a file until | |
2076 | * the inode is cleared. This in turn means that we are not good | |
2077 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2078 | * share state even when we are done with one of the three share | |
2079 | * stateid's in the inode. | |
2080 | * | |
2081 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2082 | */ | |
643168c2 | 2083 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait, bool roc) |
1da177e4 | 2084 | { |
4a35bd41 | 2085 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2086 | struct nfs4_closedata *calldata; |
b39e625b TM |
2087 | struct nfs4_state_owner *sp = state->owner; |
2088 | struct rpc_task *task; | |
5138fde0 TM |
2089 | struct rpc_message msg = { |
2090 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2091 | .rpc_cred = state->owner->so_cred, | |
2092 | }; | |
c970aa85 TM |
2093 | struct rpc_task_setup task_setup_data = { |
2094 | .rpc_client = server->client, | |
5138fde0 | 2095 | .rpc_message = &msg, |
c970aa85 | 2096 | .callback_ops = &nfs4_close_ops, |
101070ca | 2097 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2098 | .flags = RPC_TASK_ASYNC, |
2099 | }; | |
9512135d | 2100 | int status = -ENOMEM; |
1da177e4 | 2101 | |
8535b2be | 2102 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2103 | if (calldata == NULL) |
9512135d | 2104 | goto out; |
9d12b216 | 2105 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2106 | calldata->inode = state->inode; |
1da177e4 | 2107 | calldata->state = state; |
4a35bd41 | 2108 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2109 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2110 | /* Serialization for the sequence id */ |
8535b2be | 2111 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2112 | if (calldata->arg.seqid == NULL) |
2113 | goto out_free_calldata; | |
dc0b027d | 2114 | calldata->arg.fmode = 0; |
a65318bf | 2115 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2116 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2117 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2118 | calldata->res.server = server; |
f7e8917a | 2119 | calldata->roc = roc; |
643168c2 | 2120 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2121 | |
1174dd1f TM |
2122 | msg.rpc_argp = &calldata->arg; |
2123 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2124 | task_setup_data.callback_data = calldata; |
2125 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2126 | if (IS_ERR(task)) |
2127 | return PTR_ERR(task); | |
a49c3c77 TM |
2128 | status = 0; |
2129 | if (wait) | |
2130 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2131 | rpc_put_task(task); |
a49c3c77 | 2132 | return status; |
9512135d TM |
2133 | out_free_calldata: |
2134 | kfree(calldata); | |
2135 | out: | |
f7e8917a FI |
2136 | if (roc) |
2137 | pnfs_roc_release(state->inode); | |
b39e625b TM |
2138 | nfs4_put_open_state(state); |
2139 | nfs4_put_state_owner(sp); | |
9512135d | 2140 | return status; |
1da177e4 LT |
2141 | } |
2142 | ||
2b484297 | 2143 | static struct inode * |
cd9a1c0e | 2144 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2145 | { |
1da177e4 | 2146 | struct nfs4_state *state; |
1da177e4 | 2147 | |
565277f6 | 2148 | /* Protect against concurrent sillydeletes */ |
3d4ff43d | 2149 | state = nfs4_do_open(dir, ctx->dentry, ctx->mode, open_flags, attr, ctx->cred); |
f46e0bd3 TM |
2150 | if (IS_ERR(state)) |
2151 | return ERR_CAST(state); | |
cd9a1c0e | 2152 | ctx->state = state; |
f46e0bd3 | 2153 | return igrab(state->inode); |
1da177e4 LT |
2154 | } |
2155 | ||
1185a552 | 2156 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2157 | { |
2158 | if (ctx->state == NULL) | |
2159 | return; | |
2160 | if (is_sync) | |
643168c2 | 2161 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2162 | else |
643168c2 | 2163 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2164 | } |
1da177e4 LT |
2165 | |
2166 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2167 | { | |
43652ad5 BH |
2168 | struct nfs4_server_caps_arg args = { |
2169 | .fhandle = fhandle, | |
2170 | }; | |
1da177e4 LT |
2171 | struct nfs4_server_caps_res res = {}; |
2172 | struct rpc_message msg = { | |
2173 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2174 | .rpc_argp = &args, |
1da177e4 LT |
2175 | .rpc_resp = &res, |
2176 | }; | |
2177 | int status; | |
2178 | ||
7c513058 | 2179 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2180 | if (status == 0) { |
2181 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2182 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2183 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2184 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2185 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2186 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2187 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2188 | server->caps |= NFS_CAP_ACLS; | |
2189 | if (res.has_links != 0) | |
2190 | server->caps |= NFS_CAP_HARDLINKS; | |
2191 | if (res.has_symlinks != 0) | |
2192 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2193 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2194 | server->caps |= NFS_CAP_FILEID; | |
2195 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2196 | server->caps |= NFS_CAP_MODE; | |
2197 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2198 | server->caps |= NFS_CAP_NLINK; | |
2199 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2200 | server->caps |= NFS_CAP_OWNER; | |
2201 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2202 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2203 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2204 | server->caps |= NFS_CAP_ATIME; | |
2205 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2206 | server->caps |= NFS_CAP_CTIME; | |
2207 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2208 | server->caps |= NFS_CAP_MTIME; | |
2209 | ||
a65318bf TM |
2210 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2211 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2212 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 LT |
2213 | server->acl_bitmask = res.acl_bitmask; |
2214 | } | |
cccef3b9 | 2215 | |
1da177e4 LT |
2216 | return status; |
2217 | } | |
2218 | ||
55a97593 | 2219 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2220 | { |
2221 | struct nfs4_exception exception = { }; | |
2222 | int err; | |
2223 | do { | |
2224 | err = nfs4_handle_exception(server, | |
2225 | _nfs4_server_capabilities(server, fhandle), | |
2226 | &exception); | |
2227 | } while (exception.retry); | |
2228 | return err; | |
2229 | } | |
2230 | ||
2231 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2232 | struct nfs_fsinfo *info) | |
2233 | { | |
1da177e4 LT |
2234 | struct nfs4_lookup_root_arg args = { |
2235 | .bitmask = nfs4_fattr_bitmap, | |
2236 | }; | |
2237 | struct nfs4_lookup_res res = { | |
2238 | .server = server, | |
0e574af1 | 2239 | .fattr = info->fattr, |
1da177e4 LT |
2240 | .fh = fhandle, |
2241 | }; | |
2242 | struct rpc_message msg = { | |
2243 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2244 | .rpc_argp = &args, | |
2245 | .rpc_resp = &res, | |
2246 | }; | |
008f55d0 | 2247 | |
0e574af1 | 2248 | nfs_fattr_init(info->fattr); |
7c513058 | 2249 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2250 | } |
2251 | ||
2252 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2253 | struct nfs_fsinfo *info) | |
2254 | { | |
2255 | struct nfs4_exception exception = { }; | |
2256 | int err; | |
2257 | do { | |
fb8a5ba8 BS |
2258 | err = _nfs4_lookup_root(server, fhandle, info); |
2259 | switch (err) { | |
2260 | case 0: | |
2261 | case -NFS4ERR_WRONGSEC: | |
2262 | break; | |
2263 | default: | |
2264 | err = nfs4_handle_exception(server, err, &exception); | |
2265 | } | |
1da177e4 LT |
2266 | } while (exception.retry); |
2267 | return err; | |
2268 | } | |
2269 | ||
8f70e95f BS |
2270 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2271 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2272 | { | |
2273 | struct rpc_auth *auth; | |
2274 | int ret; | |
2275 | ||
2276 | auth = rpcauth_create(flavor, server->client); | |
2277 | if (!auth) { | |
2278 | ret = -EIO; | |
2279 | goto out; | |
2280 | } | |
2281 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2282 | out: |
2283 | return ret; | |
2284 | } | |
2285 | ||
801a16dc | 2286 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2287 | struct nfs_fsinfo *info) |
1da177e4 | 2288 | { |
8f70e95f | 2289 | int i, len, status = 0; |
0fabee24 | 2290 | rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS]; |
1da177e4 | 2291 | |
801a16dc BS |
2292 | len = gss_mech_list_pseudoflavors(&flav_array[0]); |
2293 | flav_array[len] = RPC_AUTH_NULL; | |
2294 | len += 1; | |
8f70e95f BS |
2295 | |
2296 | for (i = 0; i < len; i++) { | |
2297 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); | |
fb8a5ba8 | 2298 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2299 | continue; |
2300 | break; | |
8f70e95f | 2301 | } |
fb8a5ba8 BS |
2302 | /* |
2303 | * -EACCESS could mean that the user doesn't have correct permissions | |
2304 | * to access the mount. It could also mean that we tried to mount | |
2305 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2306 | * existing mount programs don't handle -EACCES very well so it should | |
2307 | * be mapped to -EPERM instead. | |
2308 | */ | |
2309 | if (status == -EACCES) | |
2310 | status = -EPERM; | |
801a16dc BS |
2311 | return status; |
2312 | } | |
2313 | ||
2314 | /* | |
2315 | * get the file handle for the "/" directory on the server | |
2316 | */ | |
2317 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2318 | struct nfs_fsinfo *info) | |
2319 | { | |
fca78d6d | 2320 | int minor_version = server->nfs_client->cl_minorversion; |
801a16dc | 2321 | int status = nfs4_lookup_root(server, fhandle, info); |
fb8a5ba8 BS |
2322 | if ((status == -NFS4ERR_WRONGSEC) && !(server->flags & NFS_MOUNT_SECFLAVOUR)) |
2323 | /* | |
2324 | * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM | |
2325 | * by nfs4_map_errors() as this function exits. | |
2326 | */ | |
fca78d6d | 2327 | status = nfs_v4_minor_ops[minor_version]->find_root_sec(server, fhandle, info); |
1da177e4 LT |
2328 | if (status == 0) |
2329 | status = nfs4_server_capabilities(server, fhandle); | |
2330 | if (status == 0) | |
2331 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2332 | return nfs4_map_errors(status); |
1da177e4 LT |
2333 | } |
2334 | ||
533eb461 | 2335 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); |
6b97fd3d MN |
2336 | /* |
2337 | * Get locations and (maybe) other attributes of a referral. | |
2338 | * Note that we'll actually follow the referral later when | |
2339 | * we detect fsid mismatch in inode revalidation | |
2340 | */ | |
533eb461 AA |
2341 | static int nfs4_get_referral(struct inode *dir, const struct qstr *name, |
2342 | struct nfs_fattr *fattr, struct nfs_fh *fhandle) | |
6b97fd3d MN |
2343 | { |
2344 | int status = -ENOMEM; | |
2345 | struct page *page = NULL; | |
2346 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2347 | |
2348 | page = alloc_page(GFP_KERNEL); | |
2349 | if (page == NULL) | |
2350 | goto out; | |
2351 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2352 | if (locations == NULL) | |
2353 | goto out; | |
2354 | ||
c228fd3a | 2355 | status = nfs4_proc_fs_locations(dir, name, locations, page); |
6b97fd3d MN |
2356 | if (status != 0) |
2357 | goto out; | |
2358 | /* Make sure server returned a different fsid for the referral */ | |
2359 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2360 | dprintk("%s: server did not return a different fsid for" |
2361 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2362 | status = -EIO; |
2363 | goto out; | |
2364 | } | |
533eb461 AA |
2365 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2366 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2367 | |
533eb461 | 2368 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2369 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2370 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2371 | out: | |
2372 | if (page) | |
2373 | __free_page(page); | |
5d7ca35a | 2374 | kfree(locations); |
6b97fd3d MN |
2375 | return status; |
2376 | } | |
2377 | ||
1da177e4 LT |
2378 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2379 | { | |
2380 | struct nfs4_getattr_arg args = { | |
2381 | .fh = fhandle, | |
2382 | .bitmask = server->attr_bitmask, | |
2383 | }; | |
2384 | struct nfs4_getattr_res res = { | |
2385 | .fattr = fattr, | |
2386 | .server = server, | |
2387 | }; | |
2388 | struct rpc_message msg = { | |
2389 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2390 | .rpc_argp = &args, | |
2391 | .rpc_resp = &res, | |
2392 | }; | |
2393 | ||
0e574af1 | 2394 | nfs_fattr_init(fattr); |
7c513058 | 2395 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2396 | } |
2397 | ||
2398 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2399 | { | |
2400 | struct nfs4_exception exception = { }; | |
2401 | int err; | |
2402 | do { | |
2403 | err = nfs4_handle_exception(server, | |
2404 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2405 | &exception); | |
2406 | } while (exception.retry); | |
2407 | return err; | |
2408 | } | |
2409 | ||
2410 | /* | |
2411 | * The file is not closed if it is opened due to the a request to change | |
2412 | * the size of the file. The open call will not be needed once the | |
2413 | * VFS layer lookup-intents are implemented. | |
2414 | * | |
2415 | * Close is called when the inode is destroyed. | |
2416 | * If we haven't opened the file for O_WRONLY, we | |
2417 | * need to in the size_change case to obtain a stateid. | |
2418 | * | |
2419 | * Got race? | |
2420 | * Because OPEN is always done by name in nfsv4, it is | |
2421 | * possible that we opened a different file by the same | |
2422 | * name. We can recognize this race condition, but we | |
2423 | * can't do anything about it besides returning an error. | |
2424 | * | |
2425 | * This will be fixed with VFS changes (lookup-intent). | |
2426 | */ | |
2427 | static int | |
2428 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2429 | struct iattr *sattr) | |
2430 | { | |
08e9eac4 | 2431 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2432 | struct rpc_cred *cred = NULL; |
d530838b | 2433 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2434 | int status; |
2435 | ||
8a1636c4 BH |
2436 | if (pnfs_ld_layoutret_on_setattr(inode)) |
2437 | pnfs_return_layout(inode); | |
2438 | ||
0e574af1 | 2439 | nfs_fattr_init(fattr); |
1da177e4 | 2440 | |
d530838b | 2441 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2442 | if (sattr->ia_valid & ATTR_FILE) { |
2443 | struct nfs_open_context *ctx; | |
2444 | ||
2445 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2446 | if (ctx) { |
2447 | cred = ctx->cred; | |
2448 | state = ctx->state; | |
2449 | } | |
659bfcd6 | 2450 | } |
08e9eac4 | 2451 | |
536e43d1 TM |
2452 | /* Deal with open(O_TRUNC) */ |
2453 | if (sattr->ia_valid & ATTR_OPEN) | |
2454 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME|ATTR_OPEN); | |
2455 | ||
659bfcd6 | 2456 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2457 | if (status == 0) |
2458 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2459 | return status; |
2460 | } | |
2461 | ||
0c2e53f1 TM |
2462 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
2463 | const struct qstr *name, struct nfs_fh *fhandle, | |
2464 | struct nfs_fattr *fattr) | |
2b3de441 | 2465 | { |
0c2e53f1 | 2466 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
2467 | int status; |
2468 | struct nfs4_lookup_arg args = { | |
2469 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 2470 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
2471 | .name = name, |
2472 | }; | |
2473 | struct nfs4_lookup_res res = { | |
2474 | .server = server, | |
2475 | .fattr = fattr, | |
2476 | .fh = fhandle, | |
2477 | }; | |
2478 | struct rpc_message msg = { | |
2479 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2480 | .rpc_argp = &args, | |
2481 | .rpc_resp = &res, | |
2482 | }; | |
2483 | ||
2484 | nfs_fattr_init(fattr); | |
2485 | ||
1da177e4 | 2486 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 2487 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2488 | dprintk("NFS reply lookup: %d\n", status); |
2489 | return status; | |
2490 | } | |
2491 | ||
7ebb9315 BS |
2492 | void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr, struct nfs_fh *fh) |
2493 | { | |
2494 | memset(fh, 0, sizeof(struct nfs_fh)); | |
2495 | fattr->fsid.major = 1; | |
2496 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
2497 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_FSID | NFS_ATTR_FATTR_MOUNTPOINT; | |
2498 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; | |
2499 | fattr->nlink = 2; | |
2500 | } | |
2501 | ||
7c513058 BS |
2502 | static int nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, struct qstr *name, |
2503 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
1da177e4 LT |
2504 | { |
2505 | struct nfs4_exception exception = { }; | |
2506 | int err; | |
2507 | do { | |
0c2e53f1 TM |
2508 | int status; |
2509 | ||
2510 | status = _nfs4_proc_lookup(clnt, dir, name, fhandle, fattr); | |
2511 | switch (status) { | |
08ef7bd3 TM |
2512 | case -NFS4ERR_BADNAME: |
2513 | return -ENOENT; | |
0c2e53f1 | 2514 | case -NFS4ERR_MOVED: |
a6f498a8 | 2515 | return nfs4_get_referral(dir, name, fattr, fhandle); |
0c2e53f1 | 2516 | case -NFS4ERR_WRONGSEC: |
7ebb9315 | 2517 | nfs_fixup_secinfo_attributes(fattr, fhandle); |
0c2e53f1 TM |
2518 | } |
2519 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2520 | status, &exception); | |
1da177e4 LT |
2521 | } while (exception.retry); |
2522 | return err; | |
2523 | } | |
2524 | ||
2525 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2526 | { | |
76b32999 | 2527 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2528 | struct nfs4_accessargs args = { |
2529 | .fh = NFS_FH(inode), | |
a4980e78 | 2530 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
2531 | }; |
2532 | struct nfs4_accessres res = { | |
2533 | .server = server, | |
1da177e4 | 2534 | }; |
1da177e4 LT |
2535 | struct rpc_message msg = { |
2536 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2537 | .rpc_argp = &args, | |
2538 | .rpc_resp = &res, | |
2539 | .rpc_cred = entry->cred, | |
2540 | }; | |
2541 | int mode = entry->mask; | |
2542 | int status; | |
2543 | ||
2544 | /* | |
2545 | * Determine which access bits we want to ask for... | |
2546 | */ | |
2547 | if (mode & MAY_READ) | |
2548 | args.access |= NFS4_ACCESS_READ; | |
2549 | if (S_ISDIR(inode->i_mode)) { | |
2550 | if (mode & MAY_WRITE) | |
2551 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2552 | if (mode & MAY_EXEC) | |
2553 | args.access |= NFS4_ACCESS_LOOKUP; | |
2554 | } else { | |
2555 | if (mode & MAY_WRITE) | |
2556 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2557 | if (mode & MAY_EXEC) | |
2558 | args.access |= NFS4_ACCESS_EXECUTE; | |
2559 | } | |
c407d41a TM |
2560 | |
2561 | res.fattr = nfs_alloc_fattr(); | |
2562 | if (res.fattr == NULL) | |
2563 | return -ENOMEM; | |
2564 | ||
7c513058 | 2565 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2566 | if (!status) { |
2567 | entry->mask = 0; | |
2568 | if (res.access & NFS4_ACCESS_READ) | |
2569 | entry->mask |= MAY_READ; | |
2570 | if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE)) | |
2571 | entry->mask |= MAY_WRITE; | |
2572 | if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE)) | |
2573 | entry->mask |= MAY_EXEC; | |
c407d41a | 2574 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2575 | } |
c407d41a | 2576 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2577 | return status; |
2578 | } | |
2579 | ||
2580 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2581 | { | |
2582 | struct nfs4_exception exception = { }; | |
2583 | int err; | |
2584 | do { | |
2585 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2586 | _nfs4_proc_access(inode, entry), | |
2587 | &exception); | |
2588 | } while (exception.retry); | |
2589 | return err; | |
2590 | } | |
2591 | ||
2592 | /* | |
2593 | * TODO: For the time being, we don't try to get any attributes | |
2594 | * along with any of the zero-copy operations READ, READDIR, | |
2595 | * READLINK, WRITE. | |
2596 | * | |
2597 | * In the case of the first three, we want to put the GETATTR | |
2598 | * after the read-type operation -- this is because it is hard | |
2599 | * to predict the length of a GETATTR response in v4, and thus | |
2600 | * align the READ data correctly. This means that the GETATTR | |
2601 | * may end up partially falling into the page cache, and we should | |
2602 | * shift it into the 'tail' of the xdr_buf before processing. | |
2603 | * To do this efficiently, we need to know the total length | |
2604 | * of data received, which doesn't seem to be available outside | |
2605 | * of the RPC layer. | |
2606 | * | |
2607 | * In the case of WRITE, we also want to put the GETATTR after | |
2608 | * the operation -- in this case because we want to make sure | |
2609 | * we get the post-operation mtime and size. This means that | |
2610 | * we can't use xdr_encode_pages() as written: we need a variant | |
2611 | * of it which would leave room in the 'tail' iovec. | |
2612 | * | |
2613 | * Both of these changes to the XDR layer would in fact be quite | |
2614 | * minor, but I decided to leave them for a subsequent patch. | |
2615 | */ | |
2616 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2617 | unsigned int pgbase, unsigned int pglen) | |
2618 | { | |
2619 | struct nfs4_readlink args = { | |
2620 | .fh = NFS_FH(inode), | |
2621 | .pgbase = pgbase, | |
2622 | .pglen = pglen, | |
2623 | .pages = &page, | |
2624 | }; | |
f50c7000 | 2625 | struct nfs4_readlink_res res; |
1da177e4 LT |
2626 | struct rpc_message msg = { |
2627 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2628 | .rpc_argp = &args, | |
f50c7000 | 2629 | .rpc_resp = &res, |
1da177e4 LT |
2630 | }; |
2631 | ||
7c513058 | 2632 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2633 | } |
2634 | ||
2635 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2636 | unsigned int pgbase, unsigned int pglen) | |
2637 | { | |
2638 | struct nfs4_exception exception = { }; | |
2639 | int err; | |
2640 | do { | |
2641 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2642 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2643 | &exception); | |
2644 | } while (exception.retry); | |
2645 | return err; | |
2646 | } | |
2647 | ||
1da177e4 LT |
2648 | /* |
2649 | * Got race? | |
2650 | * We will need to arrange for the VFS layer to provide an atomic open. | |
2651 | * Until then, this create/open method is prone to inefficiency and race | |
2652 | * conditions due to the lookup, create, and open VFS calls from sys_open() | |
2653 | * placed on the wire. | |
2654 | * | |
2655 | * Given the above sorry state of affairs, I'm simply sending an OPEN. | |
2656 | * The file will be opened again in the subsequent VFS open call | |
2657 | * (nfs4_proc_file_open). | |
2658 | * | |
2659 | * The open for read will just hang around to be used by any process that | |
2660 | * opens the file O_RDONLY. This will all be resolved with the VFS changes. | |
2661 | */ | |
2662 | ||
2663 | static int | |
2664 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
c0204fd2 | 2665 | int flags, struct nfs_open_context *ctx) |
1da177e4 | 2666 | { |
82a2c1b7 | 2667 | struct dentry *de = dentry; |
1da177e4 | 2668 | struct nfs4_state *state; |
c0204fd2 TM |
2669 | struct rpc_cred *cred = NULL; |
2670 | fmode_t fmode = 0; | |
1da177e4 LT |
2671 | int status = 0; |
2672 | ||
c0204fd2 TM |
2673 | if (ctx != NULL) { |
2674 | cred = ctx->cred; | |
3d4ff43d | 2675 | de = ctx->dentry; |
c0204fd2 | 2676 | fmode = ctx->mode; |
1da177e4 | 2677 | } |
a8a5da99 | 2678 | sattr->ia_mode &= ~current_umask(); |
82a2c1b7 | 2679 | state = nfs4_do_open(dir, de, fmode, flags, sattr, cred); |
d4d9cdcb | 2680 | d_drop(dentry); |
1da177e4 LT |
2681 | if (IS_ERR(state)) { |
2682 | status = PTR_ERR(state); | |
c0204fd2 | 2683 | goto out; |
1da177e4 | 2684 | } |
d4d9cdcb | 2685 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2686 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
c0204fd2 TM |
2687 | if (ctx != NULL) |
2688 | ctx->state = state; | |
02a913a7 | 2689 | else |
643168c2 | 2690 | nfs4_close_sync(state, fmode); |
1da177e4 LT |
2691 | out: |
2692 | return status; | |
2693 | } | |
2694 | ||
2695 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2696 | { | |
16e42959 | 2697 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2698 | struct nfs_removeargs args = { |
1da177e4 | 2699 | .fh = NFS_FH(dir), |
4fdc17b2 TM |
2700 | .name.len = name->len, |
2701 | .name.name = name->name, | |
16e42959 TM |
2702 | .bitmask = server->attr_bitmask, |
2703 | }; | |
4fdc17b2 | 2704 | struct nfs_removeres res = { |
16e42959 | 2705 | .server = server, |
1da177e4 | 2706 | }; |
1da177e4 | 2707 | struct rpc_message msg = { |
4fdc17b2 TM |
2708 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
2709 | .rpc_argp = &args, | |
2710 | .rpc_resp = &res, | |
1da177e4 | 2711 | }; |
d346890b TM |
2712 | int status = -ENOMEM; |
2713 | ||
2714 | res.dir_attr = nfs_alloc_fattr(); | |
2715 | if (res.dir_attr == NULL) | |
2716 | goto out; | |
1da177e4 | 2717 | |
7c513058 | 2718 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
16e42959 TM |
2719 | if (status == 0) { |
2720 | update_changeattr(dir, &res.cinfo); | |
d346890b | 2721 | nfs_post_op_update_inode(dir, res.dir_attr); |
16e42959 | 2722 | } |
d346890b TM |
2723 | nfs_free_fattr(res.dir_attr); |
2724 | out: | |
1da177e4 LT |
2725 | return status; |
2726 | } | |
2727 | ||
2728 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2729 | { | |
2730 | struct nfs4_exception exception = { }; | |
2731 | int err; | |
2732 | do { | |
2733 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2734 | _nfs4_proc_remove(dir, name), | |
2735 | &exception); | |
2736 | } while (exception.retry); | |
2737 | return err; | |
2738 | } | |
2739 | ||
e4eff1a6 | 2740 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 2741 | { |
e4eff1a6 TM |
2742 | struct nfs_server *server = NFS_SERVER(dir); |
2743 | struct nfs_removeargs *args = msg->rpc_argp; | |
2744 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 2745 | |
a65318bf | 2746 | args->bitmask = server->cache_consistency_bitmask; |
e4eff1a6 | 2747 | res->server = server; |
1da177e4 | 2748 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
9d12b216 | 2749 | nfs41_init_sequence(&args->seq_args, &res->seq_res, 1); |
1da177e4 LT |
2750 | } |
2751 | ||
e4eff1a6 | 2752 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 2753 | { |
e4eff1a6 TM |
2754 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
2755 | ||
14516c3a TM |
2756 | if (!nfs4_sequence_done(task, &res->seq_res)) |
2757 | return 0; | |
9e33bed5 | 2758 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
2759 | return 0; |
2760 | update_changeattr(dir, &res->cinfo); | |
d346890b | 2761 | nfs_post_op_update_inode(dir, res->dir_attr); |
e4eff1a6 | 2762 | return 1; |
1da177e4 LT |
2763 | } |
2764 | ||
d3d4152a JL |
2765 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
2766 | { | |
2767 | struct nfs_server *server = NFS_SERVER(dir); | |
2768 | struct nfs_renameargs *arg = msg->rpc_argp; | |
2769 | struct nfs_renameres *res = msg->rpc_resp; | |
2770 | ||
2771 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
2772 | arg->bitmask = server->attr_bitmask; | |
2773 | res->server = server; | |
9d12b216 | 2774 | nfs41_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
2775 | } |
2776 | ||
2777 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
2778 | struct inode *new_dir) | |
2779 | { | |
2780 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
2781 | ||
2782 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
2783 | return 0; | |
2784 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
2785 | return 0; | |
2786 | ||
2787 | update_changeattr(old_dir, &res->old_cinfo); | |
2788 | nfs_post_op_update_inode(old_dir, res->old_fattr); | |
2789 | update_changeattr(new_dir, &res->new_cinfo); | |
2790 | nfs_post_op_update_inode(new_dir, res->new_fattr); | |
2791 | return 1; | |
2792 | } | |
2793 | ||
1da177e4 LT |
2794 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
2795 | struct inode *new_dir, struct qstr *new_name) | |
2796 | { | |
6caf2c82 | 2797 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 2798 | struct nfs_renameargs arg = { |
1da177e4 LT |
2799 | .old_dir = NFS_FH(old_dir), |
2800 | .new_dir = NFS_FH(new_dir), | |
2801 | .old_name = old_name, | |
2802 | .new_name = new_name, | |
6caf2c82 TM |
2803 | .bitmask = server->attr_bitmask, |
2804 | }; | |
e8582a8b | 2805 | struct nfs_renameres res = { |
6caf2c82 | 2806 | .server = server, |
1da177e4 | 2807 | }; |
1da177e4 LT |
2808 | struct rpc_message msg = { |
2809 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
2810 | .rpc_argp = &arg, | |
2811 | .rpc_resp = &res, | |
2812 | }; | |
011fff72 | 2813 | int status = -ENOMEM; |
1da177e4 | 2814 | |
011fff72 TM |
2815 | res.old_fattr = nfs_alloc_fattr(); |
2816 | res.new_fattr = nfs_alloc_fattr(); | |
2817 | if (res.old_fattr == NULL || res.new_fattr == NULL) | |
2818 | goto out; | |
1da177e4 | 2819 | |
7c513058 | 2820 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
2821 | if (!status) { |
2822 | update_changeattr(old_dir, &res.old_cinfo); | |
6caf2c82 | 2823 | nfs_post_op_update_inode(old_dir, res.old_fattr); |
1da177e4 | 2824 | update_changeattr(new_dir, &res.new_cinfo); |
6caf2c82 | 2825 | nfs_post_op_update_inode(new_dir, res.new_fattr); |
1da177e4 | 2826 | } |
011fff72 TM |
2827 | out: |
2828 | nfs_free_fattr(res.new_fattr); | |
2829 | nfs_free_fattr(res.old_fattr); | |
1da177e4 LT |
2830 | return status; |
2831 | } | |
2832 | ||
2833 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2834 | struct inode *new_dir, struct qstr *new_name) | |
2835 | { | |
2836 | struct nfs4_exception exception = { }; | |
2837 | int err; | |
2838 | do { | |
2839 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
2840 | _nfs4_proc_rename(old_dir, old_name, | |
2841 | new_dir, new_name), | |
2842 | &exception); | |
2843 | } while (exception.retry); | |
2844 | return err; | |
2845 | } | |
2846 | ||
2847 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2848 | { | |
91ba2eee | 2849 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2850 | struct nfs4_link_arg arg = { |
2851 | .fh = NFS_FH(inode), | |
2852 | .dir_fh = NFS_FH(dir), | |
2853 | .name = name, | |
91ba2eee TM |
2854 | .bitmask = server->attr_bitmask, |
2855 | }; | |
91ba2eee TM |
2856 | struct nfs4_link_res res = { |
2857 | .server = server, | |
1da177e4 | 2858 | }; |
1da177e4 LT |
2859 | struct rpc_message msg = { |
2860 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
2861 | .rpc_argp = &arg, | |
91ba2eee | 2862 | .rpc_resp = &res, |
1da177e4 | 2863 | }; |
136f2627 TM |
2864 | int status = -ENOMEM; |
2865 | ||
2866 | res.fattr = nfs_alloc_fattr(); | |
2867 | res.dir_attr = nfs_alloc_fattr(); | |
2868 | if (res.fattr == NULL || res.dir_attr == NULL) | |
2869 | goto out; | |
1da177e4 | 2870 | |
7c513058 | 2871 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
2872 | if (!status) { |
2873 | update_changeattr(dir, &res.cinfo); | |
2874 | nfs_post_op_update_inode(dir, res.dir_attr); | |
73a3d07c | 2875 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 2876 | } |
136f2627 TM |
2877 | out: |
2878 | nfs_free_fattr(res.dir_attr); | |
2879 | nfs_free_fattr(res.fattr); | |
1da177e4 LT |
2880 | return status; |
2881 | } | |
2882 | ||
2883 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2884 | { | |
2885 | struct nfs4_exception exception = { }; | |
2886 | int err; | |
2887 | do { | |
2888 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2889 | _nfs4_proc_link(inode, dir, name), | |
2890 | &exception); | |
2891 | } while (exception.retry); | |
2892 | return err; | |
2893 | } | |
2894 | ||
57dc9a57 TM |
2895 | struct nfs4_createdata { |
2896 | struct rpc_message msg; | |
2897 | struct nfs4_create_arg arg; | |
2898 | struct nfs4_create_res res; | |
2899 | struct nfs_fh fh; | |
2900 | struct nfs_fattr fattr; | |
2901 | struct nfs_fattr dir_fattr; | |
2902 | }; | |
2903 | ||
2904 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
2905 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
2906 | { | |
2907 | struct nfs4_createdata *data; | |
2908 | ||
2909 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
2910 | if (data != NULL) { | |
2911 | struct nfs_server *server = NFS_SERVER(dir); | |
2912 | ||
2913 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
2914 | data->msg.rpc_argp = &data->arg; | |
2915 | data->msg.rpc_resp = &data->res; | |
2916 | data->arg.dir_fh = NFS_FH(dir); | |
2917 | data->arg.server = server; | |
2918 | data->arg.name = name; | |
2919 | data->arg.attrs = sattr; | |
2920 | data->arg.ftype = ftype; | |
2921 | data->arg.bitmask = server->attr_bitmask; | |
2922 | data->res.server = server; | |
2923 | data->res.fh = &data->fh; | |
2924 | data->res.fattr = &data->fattr; | |
2925 | data->res.dir_fattr = &data->dir_fattr; | |
2926 | nfs_fattr_init(data->res.fattr); | |
2927 | nfs_fattr_init(data->res.dir_fattr); | |
2928 | } | |
2929 | return data; | |
2930 | } | |
2931 | ||
2932 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
2933 | { | |
7c513058 | 2934 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 2935 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
2936 | if (status == 0) { |
2937 | update_changeattr(dir, &data->res.dir_cinfo); | |
2938 | nfs_post_op_update_inode(dir, data->res.dir_fattr); | |
2939 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); | |
2940 | } | |
2941 | return status; | |
2942 | } | |
2943 | ||
2944 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
2945 | { | |
2946 | kfree(data); | |
2947 | } | |
2948 | ||
4f390c15 | 2949 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2950 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 2951 | { |
57dc9a57 TM |
2952 | struct nfs4_createdata *data; |
2953 | int status = -ENAMETOOLONG; | |
1da177e4 | 2954 | |
94a6d753 | 2955 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 2956 | goto out; |
4f390c15 | 2957 | |
57dc9a57 TM |
2958 | status = -ENOMEM; |
2959 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
2960 | if (data == NULL) | |
2961 | goto out; | |
2962 | ||
2963 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
2964 | data->arg.u.symlink.pages = &page; | |
2965 | data->arg.u.symlink.len = len; | |
1da177e4 | 2966 | |
57dc9a57 TM |
2967 | status = nfs4_do_create(dir, dentry, data); |
2968 | ||
2969 | nfs4_free_createdata(data); | |
2970 | out: | |
1da177e4 LT |
2971 | return status; |
2972 | } | |
2973 | ||
4f390c15 | 2974 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2975 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
2976 | { |
2977 | struct nfs4_exception exception = { }; | |
2978 | int err; | |
2979 | do { | |
2980 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
2981 | _nfs4_proc_symlink(dir, dentry, page, |
2982 | len, sattr), | |
1da177e4 LT |
2983 | &exception); |
2984 | } while (exception.retry); | |
2985 | return err; | |
2986 | } | |
2987 | ||
2988 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2989 | struct iattr *sattr) | |
2990 | { | |
57dc9a57 TM |
2991 | struct nfs4_createdata *data; |
2992 | int status = -ENOMEM; | |
1da177e4 | 2993 | |
57dc9a57 TM |
2994 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
2995 | if (data == NULL) | |
2996 | goto out; | |
2997 | ||
2998 | status = nfs4_do_create(dir, dentry, data); | |
2999 | ||
3000 | nfs4_free_createdata(data); | |
3001 | out: | |
1da177e4 LT |
3002 | return status; |
3003 | } | |
3004 | ||
3005 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3006 | struct iattr *sattr) | |
3007 | { | |
3008 | struct nfs4_exception exception = { }; | |
3009 | int err; | |
a8a5da99 AK |
3010 | |
3011 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3012 | do { |
3013 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3014 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
3015 | &exception); | |
3016 | } while (exception.retry); | |
3017 | return err; | |
3018 | } | |
3019 | ||
3020 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3021 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3022 | { |
3023 | struct inode *dir = dentry->d_inode; | |
3024 | struct nfs4_readdir_arg args = { | |
3025 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3026 | .pages = pages, |
1da177e4 LT |
3027 | .pgbase = 0, |
3028 | .count = count, | |
96d25e53 | 3029 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3030 | .plus = plus, |
1da177e4 LT |
3031 | }; |
3032 | struct nfs4_readdir_res res; | |
3033 | struct rpc_message msg = { | |
3034 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3035 | .rpc_argp = &args, | |
3036 | .rpc_resp = &res, | |
3037 | .rpc_cred = cred, | |
3038 | }; | |
3039 | int status; | |
3040 | ||
3110ff80 | 3041 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
3042 | dentry->d_parent->d_name.name, |
3043 | dentry->d_name.name, | |
3044 | (unsigned long long)cookie); | |
1da177e4 LT |
3045 | nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args); |
3046 | res.pgbase = args.pgbase; | |
7c513058 | 3047 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3048 | if (status >= 0) { |
1da177e4 | 3049 | memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3050 | status += args.pgbase; |
3051 | } | |
c4812998 TM |
3052 | |
3053 | nfs_invalidate_atime(dir); | |
3054 | ||
3110ff80 | 3055 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3056 | return status; |
3057 | } | |
3058 | ||
3059 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3060 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3061 | { |
3062 | struct nfs4_exception exception = { }; | |
3063 | int err; | |
3064 | do { | |
3065 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
3066 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 3067 | pages, count, plus), |
1da177e4 LT |
3068 | &exception); |
3069 | } while (exception.retry); | |
3070 | return err; | |
3071 | } | |
3072 | ||
3073 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3074 | struct iattr *sattr, dev_t rdev) | |
3075 | { | |
57dc9a57 TM |
3076 | struct nfs4_createdata *data; |
3077 | int mode = sattr->ia_mode; | |
3078 | int status = -ENOMEM; | |
1da177e4 LT |
3079 | |
3080 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
3081 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
57dc9a57 TM |
3082 | |
3083 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); | |
3084 | if (data == NULL) | |
3085 | goto out; | |
3086 | ||
1da177e4 | 3087 | if (S_ISFIFO(mode)) |
57dc9a57 | 3088 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3089 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3090 | data->arg.ftype = NF4BLK; |
3091 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3092 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3093 | } |
3094 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3095 | data->arg.ftype = NF4CHR; |
3096 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3097 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 | 3098 | } |
1da177e4 | 3099 | |
57dc9a57 TM |
3100 | status = nfs4_do_create(dir, dentry, data); |
3101 | ||
3102 | nfs4_free_createdata(data); | |
3103 | out: | |
1da177e4 LT |
3104 | return status; |
3105 | } | |
3106 | ||
3107 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3108 | struct iattr *sattr, dev_t rdev) | |
3109 | { | |
3110 | struct nfs4_exception exception = { }; | |
3111 | int err; | |
a8a5da99 AK |
3112 | |
3113 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3114 | do { |
3115 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3116 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
3117 | &exception); | |
3118 | } while (exception.retry); | |
3119 | return err; | |
3120 | } | |
3121 | ||
3122 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3123 | struct nfs_fsstat *fsstat) | |
3124 | { | |
3125 | struct nfs4_statfs_arg args = { | |
3126 | .fh = fhandle, | |
3127 | .bitmask = server->attr_bitmask, | |
3128 | }; | |
24ad148a BH |
3129 | struct nfs4_statfs_res res = { |
3130 | .fsstat = fsstat, | |
3131 | }; | |
1da177e4 LT |
3132 | struct rpc_message msg = { |
3133 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3134 | .rpc_argp = &args, | |
24ad148a | 3135 | .rpc_resp = &res, |
1da177e4 LT |
3136 | }; |
3137 | ||
0e574af1 | 3138 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3139 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3140 | } |
3141 | ||
3142 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3143 | { | |
3144 | struct nfs4_exception exception = { }; | |
3145 | int err; | |
3146 | do { | |
3147 | err = nfs4_handle_exception(server, | |
3148 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3149 | &exception); | |
3150 | } while (exception.retry); | |
3151 | return err; | |
3152 | } | |
3153 | ||
3154 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3155 | struct nfs_fsinfo *fsinfo) | |
3156 | { | |
3157 | struct nfs4_fsinfo_arg args = { | |
3158 | .fh = fhandle, | |
3159 | .bitmask = server->attr_bitmask, | |
3160 | }; | |
3dda5e43 BH |
3161 | struct nfs4_fsinfo_res res = { |
3162 | .fsinfo = fsinfo, | |
3163 | }; | |
1da177e4 LT |
3164 | struct rpc_message msg = { |
3165 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3166 | .rpc_argp = &args, | |
3dda5e43 | 3167 | .rpc_resp = &res, |
1da177e4 LT |
3168 | }; |
3169 | ||
7c513058 | 3170 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3171 | } |
3172 | ||
3173 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3174 | { | |
3175 | struct nfs4_exception exception = { }; | |
3176 | int err; | |
3177 | ||
3178 | do { | |
3179 | err = nfs4_handle_exception(server, | |
3180 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
3181 | &exception); | |
3182 | } while (exception.retry); | |
3183 | return err; | |
3184 | } | |
3185 | ||
3186 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3187 | { | |
0e574af1 | 3188 | nfs_fattr_init(fsinfo->fattr); |
1da177e4 LT |
3189 | return nfs4_do_fsinfo(server, fhandle, fsinfo); |
3190 | } | |
3191 | ||
3192 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3193 | struct nfs_pathconf *pathconf) | |
3194 | { | |
3195 | struct nfs4_pathconf_arg args = { | |
3196 | .fh = fhandle, | |
3197 | .bitmask = server->attr_bitmask, | |
3198 | }; | |
d45b2989 BH |
3199 | struct nfs4_pathconf_res res = { |
3200 | .pathconf = pathconf, | |
3201 | }; | |
1da177e4 LT |
3202 | struct rpc_message msg = { |
3203 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3204 | .rpc_argp = &args, | |
d45b2989 | 3205 | .rpc_resp = &res, |
1da177e4 LT |
3206 | }; |
3207 | ||
3208 | /* None of the pathconf attributes are mandatory to implement */ | |
3209 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3210 | memset(pathconf, 0, sizeof(*pathconf)); | |
3211 | return 0; | |
3212 | } | |
3213 | ||
0e574af1 | 3214 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3215 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3216 | } |
3217 | ||
3218 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3219 | struct nfs_pathconf *pathconf) | |
3220 | { | |
3221 | struct nfs4_exception exception = { }; | |
3222 | int err; | |
3223 | ||
3224 | do { | |
3225 | err = nfs4_handle_exception(server, | |
3226 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3227 | &exception); | |
3228 | } while (exception.retry); | |
3229 | return err; | |
3230 | } | |
3231 | ||
d20581aa BH |
3232 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3233 | { | |
3234 | nfs_invalidate_atime(data->inode); | |
3235 | } | |
3236 | ||
cbdabc7f | 3237 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3238 | { |
ec06c096 | 3239 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 3240 | |
9e33bed5 | 3241 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3242 | rpc_restart_call_prepare(task); |
ec06c096 | 3243 | return -EAGAIN; |
1da177e4 | 3244 | } |
8850df99 | 3245 | |
d20581aa | 3246 | __nfs4_read_done_cb(data); |
1da177e4 | 3247 | if (task->tk_status > 0) |
ec06c096 TM |
3248 | renew_lease(server, data->timestamp); |
3249 | return 0; | |
1da177e4 LT |
3250 | } |
3251 | ||
cbdabc7f AA |
3252 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3253 | { | |
3254 | ||
3255 | dprintk("--> %s\n", __func__); | |
3256 | ||
3257 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3258 | return -EAGAIN; | |
3259 | ||
d20581aa BH |
3260 | return data->read_done_cb ? data->read_done_cb(task, data) : |
3261 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
3262 | } |
3263 | ||
bdc7f021 | 3264 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3265 | { |
1da177e4 | 3266 | data->timestamp = jiffies; |
cbdabc7f | 3267 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3268 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
9d12b216 | 3269 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
1da177e4 LT |
3270 | } |
3271 | ||
cbdabc7f AA |
3272 | /* Reset the the nfs_read_data to send the read to the MDS. */ |
3273 | void nfs4_reset_read(struct rpc_task *task, struct nfs_read_data *data) | |
3274 | { | |
3275 | dprintk("%s Reset task for i/o through\n", __func__); | |
3276 | put_lseg(data->lseg); | |
3277 | data->lseg = NULL; | |
3278 | /* offsets will differ in the dense stripe case */ | |
3279 | data->args.offset = data->mds_offset; | |
3280 | data->ds_clp = NULL; | |
3281 | data->args.fh = NFS_FH(data->inode); | |
3282 | data->read_done_cb = nfs4_read_done_cb; | |
3283 | task->tk_ops = data->mds_ops; | |
3284 | rpc_task_reset_client(task, NFS_CLIENT(data->inode)); | |
3285 | } | |
3286 | EXPORT_SYMBOL_GPL(nfs4_reset_read); | |
3287 | ||
b029bc9b | 3288 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3289 | { |
1da177e4 LT |
3290 | struct inode *inode = data->inode; |
3291 | ||
9e33bed5 | 3292 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3293 | rpc_restart_call_prepare(task); |
788e7a89 | 3294 | return -EAGAIN; |
1da177e4 | 3295 | } |
4f9838c7 | 3296 | if (task->tk_status >= 0) { |
1da177e4 | 3297 | renew_lease(NFS_SERVER(inode), data->timestamp); |
70ca8852 | 3298 | nfs_post_op_update_inode_force_wcc(inode, data->res.fattr); |
4f9838c7 | 3299 | } |
788e7a89 | 3300 | return 0; |
1da177e4 LT |
3301 | } |
3302 | ||
b029bc9b FI |
3303 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3304 | { | |
3305 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3306 | return -EAGAIN; | |
d20581aa BH |
3307 | return data->write_done_cb ? data->write_done_cb(task, data) : |
3308 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
3309 | } |
3310 | ||
a69aef14 FI |
3311 | /* Reset the the nfs_write_data to send the write to the MDS. */ |
3312 | void nfs4_reset_write(struct rpc_task *task, struct nfs_write_data *data) | |
3313 | { | |
3314 | dprintk("%s Reset task for i/o through\n", __func__); | |
3315 | put_lseg(data->lseg); | |
3316 | data->lseg = NULL; | |
3317 | data->ds_clp = NULL; | |
3318 | data->write_done_cb = nfs4_write_done_cb; | |
3319 | data->args.fh = NFS_FH(data->inode); | |
3320 | data->args.bitmask = data->res.server->cache_consistency_bitmask; | |
3321 | data->args.offset = data->mds_offset; | |
3322 | data->res.fattr = &data->fattr; | |
3323 | task->tk_ops = data->mds_ops; | |
3324 | rpc_task_reset_client(task, NFS_CLIENT(data->inode)); | |
3325 | } | |
3326 | EXPORT_SYMBOL_GPL(nfs4_reset_write); | |
3327 | ||
bdc7f021 | 3328 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3329 | { |
bdc7f021 TM |
3330 | struct nfs_server *server = NFS_SERVER(data->inode); |
3331 | ||
7ffd1064 FI |
3332 | if (data->lseg) { |
3333 | data->args.bitmask = NULL; | |
3334 | data->res.fattr = NULL; | |
3335 | } else | |
3336 | data->args.bitmask = server->cache_consistency_bitmask; | |
b029bc9b FI |
3337 | if (!data->write_done_cb) |
3338 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3339 | data->res.server = server; |
1da177e4 LT |
3340 | data->timestamp = jiffies; |
3341 | ||
bdc7f021 | 3342 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
9d12b216 | 3343 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3344 | } |
3345 | ||
5f452431 | 3346 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3347 | { |
1da177e4 | 3348 | struct inode *inode = data->inode; |
14516c3a | 3349 | |
9e33bed5 | 3350 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
d00c5d43 | 3351 | rpc_restart_call_prepare(task); |
788e7a89 | 3352 | return -EAGAIN; |
1da177e4 | 3353 | } |
9e08a3c5 | 3354 | nfs_refresh_inode(inode, data->res.fattr); |
788e7a89 | 3355 | return 0; |
1da177e4 LT |
3356 | } |
3357 | ||
5f452431 FI |
3358 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data) |
3359 | { | |
3360 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3361 | return -EAGAIN; | |
3362 | return data->write_done_cb(task, data); | |
3363 | } | |
3364 | ||
bdc7f021 | 3365 | static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3366 | { |
788e7a89 | 3367 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce FI |
3368 | |
3369 | if (data->lseg) { | |
3370 | data->args.bitmask = NULL; | |
3371 | data->res.fattr = NULL; | |
3372 | } else | |
3373 | data->args.bitmask = server->cache_consistency_bitmask; | |
5f452431 FI |
3374 | if (!data->write_done_cb) |
3375 | data->write_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 3376 | data->res.server = server; |
bdc7f021 | 3377 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
9d12b216 | 3378 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3379 | } |
3380 | ||
9bc4e3ca CL |
3381 | struct nfs4_renewdata { |
3382 | struct nfs_client *client; | |
3383 | unsigned long timestamp; | |
3384 | }; | |
3385 | ||
1da177e4 LT |
3386 | /* |
3387 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3388 | * standalone procedure for queueing an asynchronous RENEW. | |
3389 | */ | |
9bc4e3ca | 3390 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3391 | { |
9bc4e3ca CL |
3392 | struct nfs4_renewdata *data = calldata; |
3393 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3394 | |
0851de06 AB |
3395 | if (atomic_read(&clp->cl_count) > 1) |
3396 | nfs4_schedule_state_renewal(clp); | |
3397 | nfs_put_client(clp); | |
9bc4e3ca | 3398 | kfree(data); |
dc96aef9 AB |
3399 | } |
3400 | ||
9bc4e3ca | 3401 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3402 | { |
9bc4e3ca CL |
3403 | struct nfs4_renewdata *data = calldata; |
3404 | struct nfs_client *clp = data->client; | |
3405 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3406 | |
3407 | if (task->tk_status < 0) { | |
95baa25c | 3408 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
3409 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
3410 | return; | |
3411 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 3412 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
3413 | return; |
3414 | } | |
3415 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 3416 | } |
452e9352 | 3417 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3418 | } |
3419 | ||
963d8fe5 TM |
3420 | static const struct rpc_call_ops nfs4_renew_ops = { |
3421 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3422 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3423 | }; |
3424 | ||
2f60ea6b | 3425 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
3426 | { |
3427 | struct rpc_message msg = { | |
3428 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3429 | .rpc_argp = clp, | |
b4454fe1 | 3430 | .rpc_cred = cred, |
1da177e4 | 3431 | }; |
9bc4e3ca | 3432 | struct nfs4_renewdata *data; |
1da177e4 | 3433 | |
2f60ea6b TM |
3434 | if (renew_flags == 0) |
3435 | return 0; | |
0851de06 AB |
3436 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3437 | return -EIO; | |
b569ad34 | 3438 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
3439 | if (data == NULL) |
3440 | return -ENOMEM; | |
3441 | data->client = clp; | |
3442 | data->timestamp = jiffies; | |
1da177e4 | 3443 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, |
9bc4e3ca | 3444 | &nfs4_renew_ops, data); |
1da177e4 LT |
3445 | } |
3446 | ||
8534d4ec | 3447 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3448 | { |
3449 | struct rpc_message msg = { | |
3450 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3451 | .rpc_argp = clp, | |
b4454fe1 | 3452 | .rpc_cred = cred, |
1da177e4 LT |
3453 | }; |
3454 | unsigned long now = jiffies; | |
3455 | int status; | |
3456 | ||
3457 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3458 | if (status < 0) | |
3459 | return status; | |
452e9352 | 3460 | do_renew_lease(clp, now); |
1da177e4 LT |
3461 | return 0; |
3462 | } | |
3463 | ||
aa1870af BF |
3464 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3465 | { | |
3466 | return (server->caps & NFS_CAP_ACLS) | |
3467 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3468 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3469 | } | |
3470 | ||
3471 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that | |
3472 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on | |
3473 | * the stack. | |
3474 | */ | |
3475 | #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT) | |
3476 | ||
e9e3d724 NH |
3477 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
3478 | struct page **pages, unsigned int *pgbase) | |
3479 | { | |
3480 | struct page *newpage, **spages; | |
3481 | int rc = 0; | |
3482 | size_t len; | |
3483 | spages = pages; | |
3484 | ||
3485 | do { | |
43b7c3f0 | 3486 | len = min_t(size_t, PAGE_CACHE_SIZE, buflen); |
e9e3d724 NH |
3487 | newpage = alloc_page(GFP_KERNEL); |
3488 | ||
3489 | if (newpage == NULL) | |
3490 | goto unwind; | |
3491 | memcpy(page_address(newpage), buf, len); | |
3492 | buf += len; | |
3493 | buflen -= len; | |
3494 | *pages++ = newpage; | |
3495 | rc++; | |
3496 | } while (buflen != 0); | |
3497 | ||
3498 | return rc; | |
3499 | ||
3500 | unwind: | |
3501 | for(; rc > 0; rc--) | |
3502 | __free_page(spages[rc-1]); | |
3503 | return -ENOMEM; | |
3504 | } | |
3505 | ||
e50a1c2e BF |
3506 | struct nfs4_cached_acl { |
3507 | int cached; | |
3508 | size_t len; | |
3e9d4154 | 3509 | char data[0]; |
e50a1c2e BF |
3510 | }; |
3511 | ||
3512 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3513 | { | |
3514 | struct nfs_inode *nfsi = NFS_I(inode); | |
3515 | ||
3516 | spin_lock(&inode->i_lock); | |
3517 | kfree(nfsi->nfs4_acl); | |
3518 | nfsi->nfs4_acl = acl; | |
3519 | spin_unlock(&inode->i_lock); | |
3520 | } | |
3521 | ||
3522 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3523 | { | |
3524 | nfs4_set_cached_acl(inode, NULL); | |
3525 | } | |
3526 | ||
3527 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3528 | { | |
3529 | struct nfs_inode *nfsi = NFS_I(inode); | |
3530 | struct nfs4_cached_acl *acl; | |
3531 | int ret = -ENOENT; | |
3532 | ||
3533 | spin_lock(&inode->i_lock); | |
3534 | acl = nfsi->nfs4_acl; | |
3535 | if (acl == NULL) | |
3536 | goto out; | |
3537 | if (buf == NULL) /* user is just asking for length */ | |
3538 | goto out_len; | |
3539 | if (acl->cached == 0) | |
3540 | goto out; | |
3541 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3542 | if (acl->len > buflen) | |
3543 | goto out; | |
3544 | memcpy(buf, acl->data, acl->len); | |
3545 | out_len: | |
3546 | ret = acl->len; | |
3547 | out: | |
3548 | spin_unlock(&inode->i_lock); | |
3549 | return ret; | |
3550 | } | |
3551 | ||
3552 | static void nfs4_write_cached_acl(struct inode *inode, const char *buf, size_t acl_len) | |
3553 | { | |
3554 | struct nfs4_cached_acl *acl; | |
3555 | ||
3556 | if (buf && acl_len <= PAGE_SIZE) { | |
3557 | acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL); | |
3558 | if (acl == NULL) | |
3559 | goto out; | |
3560 | acl->cached = 1; | |
3561 | memcpy(acl->data, buf, acl_len); | |
3562 | } else { | |
3563 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3564 | if (acl == NULL) | |
3565 | goto out; | |
3566 | acl->cached = 0; | |
3567 | } | |
3568 | acl->len = acl_len; | |
3569 | out: | |
3570 | nfs4_set_cached_acl(inode, acl); | |
3571 | } | |
3572 | ||
bf118a34 AA |
3573 | /* |
3574 | * The getxattr API returns the required buffer length when called with a | |
3575 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
3576 | * the required buf. On a NULL buf, we send a page of data to the server | |
3577 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
3578 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
3579 | * the cache. If not so, we throw away the page, and cache the required | |
3580 | * length. The next getxattr call will then produce another round trip to | |
3581 | * the server, this time with the input buf of the required size. | |
3582 | */ | |
16b4289c | 3583 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3584 | { |
bf118a34 | 3585 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
3586 | struct nfs_getaclargs args = { |
3587 | .fh = NFS_FH(inode), | |
3588 | .acl_pages = pages, | |
3589 | .acl_len = buflen, | |
3590 | }; | |
663c79b3 BH |
3591 | struct nfs_getaclres res = { |
3592 | .acl_len = buflen, | |
3593 | }; | |
e50a1c2e | 3594 | void *resp_buf; |
aa1870af BF |
3595 | struct rpc_message msg = { |
3596 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3597 | .rpc_argp = &args, | |
663c79b3 | 3598 | .rpc_resp = &res, |
aa1870af | 3599 | }; |
bf118a34 | 3600 | int ret = -ENOMEM, npages, i, acl_len = 0; |
aa1870af | 3601 | |
bf118a34 AA |
3602 | npages = (buflen + PAGE_SIZE - 1) >> PAGE_SHIFT; |
3603 | /* As long as we're doing a round trip to the server anyway, | |
3604 | * let's be prepared for a page of acl data. */ | |
3605 | if (npages == 0) | |
3606 | npages = 1; | |
3607 | ||
3608 | for (i = 0; i < npages; i++) { | |
3609 | pages[i] = alloc_page(GFP_KERNEL); | |
3610 | if (!pages[i]) | |
3611 | goto out_free; | |
e50a1c2e | 3612 | } |
bf118a34 AA |
3613 | if (npages > 1) { |
3614 | /* for decoding across pages */ | |
3615 | args.acl_scratch = alloc_page(GFP_KERNEL); | |
3616 | if (!args.acl_scratch) | |
3617 | goto out_free; | |
e50a1c2e | 3618 | } |
bf118a34 AA |
3619 | args.acl_len = npages * PAGE_SIZE; |
3620 | args.acl_pgbase = 0; | |
3621 | /* Let decode_getfacl know not to fail if the ACL data is larger than | |
3622 | * the page we send as a guess */ | |
3623 | if (buf == NULL) | |
3624 | res.acl_flags |= NFS4_ACL_LEN_REQUEST; | |
3625 | resp_buf = page_address(pages[0]); | |
3626 | ||
de040bec | 3627 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
3628 | __func__, buf, buflen, npages, args.acl_len); |
3629 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
3630 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
3631 | if (ret) |
3632 | goto out_free; | |
bf118a34 AA |
3633 | |
3634 | acl_len = res.acl_len - res.acl_data_offset; | |
3635 | if (acl_len > args.acl_len) | |
3636 | nfs4_write_cached_acl(inode, NULL, acl_len); | |
e50a1c2e | 3637 | else |
bf118a34 AA |
3638 | nfs4_write_cached_acl(inode, resp_buf + res.acl_data_offset, |
3639 | acl_len); | |
e50a1c2e BF |
3640 | if (buf) { |
3641 | ret = -ERANGE; | |
bf118a34 | 3642 | if (acl_len > buflen) |
e50a1c2e | 3643 | goto out_free; |
bf118a34 AA |
3644 | _copy_from_pages(buf, pages, res.acl_data_offset, |
3645 | res.acl_len); | |
e50a1c2e | 3646 | } |
bf118a34 | 3647 | ret = acl_len; |
e50a1c2e | 3648 | out_free: |
bf118a34 AA |
3649 | for (i = 0; i < npages; i++) |
3650 | if (pages[i]) | |
3651 | __free_page(pages[i]); | |
3652 | if (args.acl_scratch) | |
3653 | __free_page(args.acl_scratch); | |
aa1870af BF |
3654 | return ret; |
3655 | } | |
3656 | ||
16b4289c TM |
3657 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
3658 | { | |
3659 | struct nfs4_exception exception = { }; | |
3660 | ssize_t ret; | |
3661 | do { | |
3662 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
3663 | if (ret >= 0) | |
3664 | break; | |
3665 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
3666 | } while (exception.retry); | |
3667 | return ret; | |
3668 | } | |
3669 | ||
e50a1c2e BF |
3670 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
3671 | { | |
3672 | struct nfs_server *server = NFS_SERVER(inode); | |
3673 | int ret; | |
3674 | ||
3675 | if (!nfs4_server_supports_acls(server)) | |
3676 | return -EOPNOTSUPP; | |
3677 | ret = nfs_revalidate_inode(server, inode); | |
3678 | if (ret < 0) | |
3679 | return ret; | |
08a22b39 AK |
3680 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
3681 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
3682 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
3683 | if (ret != -ENOENT) | |
bf118a34 AA |
3684 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
3685 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
3686 | return ret; |
3687 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
3688 | } | |
3689 | ||
16b4289c | 3690 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
3691 | { |
3692 | struct nfs_server *server = NFS_SERVER(inode); | |
3693 | struct page *pages[NFS4ACL_MAXPAGES]; | |
3694 | struct nfs_setaclargs arg = { | |
3695 | .fh = NFS_FH(inode), | |
3696 | .acl_pages = pages, | |
3697 | .acl_len = buflen, | |
3698 | }; | |
73c403a9 | 3699 | struct nfs_setaclres res; |
4b580ee3 BF |
3700 | struct rpc_message msg = { |
3701 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
3702 | .rpc_argp = &arg, | |
73c403a9 | 3703 | .rpc_resp = &res, |
4b580ee3 | 3704 | }; |
e9e3d724 | 3705 | int ret, i; |
4b580ee3 BF |
3706 | |
3707 | if (!nfs4_server_supports_acls(server)) | |
3708 | return -EOPNOTSUPP; | |
e9e3d724 NH |
3709 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
3710 | if (i < 0) | |
3711 | return i; | |
642ac549 | 3712 | nfs_inode_return_delegation(inode); |
7c513058 | 3713 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
3714 | |
3715 | /* | |
3716 | * Free each page after tx, so the only ref left is | |
3717 | * held by the network stack | |
3718 | */ | |
3719 | for (; i > 0; i--) | |
3720 | put_page(pages[i-1]); | |
3721 | ||
08a22b39 AK |
3722 | /* |
3723 | * Acl update can result in inode attribute update. | |
3724 | * so mark the attribute cache invalid. | |
3725 | */ | |
3726 | spin_lock(&inode->i_lock); | |
3727 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
3728 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
3729 | nfs_access_zap_cache(inode); |
3730 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
3731 | return ret; |
3732 | } | |
3733 | ||
16b4289c TM |
3734 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
3735 | { | |
3736 | struct nfs4_exception exception = { }; | |
3737 | int err; | |
3738 | do { | |
3739 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3740 | __nfs4_proc_set_acl(inode, buf, buflen), | |
3741 | &exception); | |
3742 | } while (exception.retry); | |
3743 | return err; | |
3744 | } | |
3745 | ||
1da177e4 | 3746 | static int |
aa5190d0 | 3747 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 3748 | { |
aa5190d0 TM |
3749 | struct nfs_client *clp = server->nfs_client; |
3750 | ||
3751 | if (task->tk_status >= 0) | |
1da177e4 LT |
3752 | return 0; |
3753 | switch(task->tk_status) { | |
9e33bed5 TM |
3754 | case -NFS4ERR_ADMIN_REVOKED: |
3755 | case -NFS4ERR_BAD_STATEID: | |
3756 | case -NFS4ERR_OPENMODE: | |
3757 | if (state == NULL) | |
3758 | break; | |
0400a6b0 TM |
3759 | nfs4_schedule_stateid_recovery(server, state); |
3760 | goto wait_on_recovery; | |
0ced63d1 TM |
3761 | case -NFS4ERR_EXPIRED: |
3762 | if (state != NULL) | |
3763 | nfs4_schedule_stateid_recovery(server, state); | |
1da177e4 | 3764 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 3765 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
3766 | nfs4_schedule_lease_recovery(clp); |
3767 | goto wait_on_recovery; | |
4745e315 AA |
3768 | #if defined(CONFIG_NFS_V4_1) |
3769 | case -NFS4ERR_BADSESSION: | |
3770 | case -NFS4ERR_BADSLOT: | |
3771 | case -NFS4ERR_BAD_HIGH_SLOT: | |
3772 | case -NFS4ERR_DEADSESSION: | |
3773 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
3774 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
3775 | case -NFS4ERR_SEQ_MISORDERED: | |
3776 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
3777 | task->tk_status); | |
0400a6b0 | 3778 | nfs4_schedule_session_recovery(clp->cl_session); |
4745e315 AA |
3779 | task->tk_status = 0; |
3780 | return -EAGAIN; | |
3781 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 3782 | case -NFS4ERR_DELAY: |
aa5190d0 | 3783 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 3784 | case -NFS4ERR_GRACE: |
2c643488 | 3785 | case -EKEYEXPIRED: |
1da177e4 LT |
3786 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
3787 | task->tk_status = 0; | |
3788 | return -EAGAIN; | |
a8a4ae3a | 3789 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
3790 | case -NFS4ERR_OLD_STATEID: |
3791 | task->tk_status = 0; | |
3792 | return -EAGAIN; | |
3793 | } | |
3794 | task->tk_status = nfs4_map_errors(task->tk_status); | |
3795 | return 0; | |
0400a6b0 | 3796 | wait_on_recovery: |
a2c0b9e2 | 3797 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
3798 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
3799 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
3800 | task->tk_status = 0; | |
3801 | return -EAGAIN; | |
1da177e4 LT |
3802 | } |
3803 | ||
bb8b27e5 TM |
3804 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
3805 | unsigned short port, struct rpc_cred *cred, | |
3806 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
3807 | { |
3808 | nfs4_verifier sc_verifier; | |
3809 | struct nfs4_setclientid setclientid = { | |
3810 | .sc_verifier = &sc_verifier, | |
3811 | .sc_prog = program, | |
f4eecd5d | 3812 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
3813 | }; |
3814 | struct rpc_message msg = { | |
3815 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
3816 | .rpc_argp = &setclientid, | |
bb8b27e5 | 3817 | .rpc_resp = res, |
286d7d6a | 3818 | .rpc_cred = cred, |
1da177e4 | 3819 | }; |
bc4785cd | 3820 | __be32 *p; |
1da177e4 LT |
3821 | int loop = 0; |
3822 | int status; | |
3823 | ||
bc4785cd | 3824 | p = (__be32*)sc_verifier.data; |
1da177e4 LT |
3825 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); |
3826 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
3827 | ||
3828 | for(;;) { | |
3829 | setclientid.sc_name_len = scnprintf(setclientid.sc_name, | |
69dd716c | 3830 | sizeof(setclientid.sc_name), "%s/%s %s %s %u", |
d4d3c507 CL |
3831 | clp->cl_ipaddr, |
3832 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3833 | RPC_DISPLAY_ADDR), | |
69dd716c TM |
3834 | rpc_peeraddr2str(clp->cl_rpcclient, |
3835 | RPC_DISPLAY_PROTO), | |
78ea323b | 3836 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
1da177e4 LT |
3837 | clp->cl_id_uniquifier); |
3838 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, | |
d4d3c507 CL |
3839 | sizeof(setclientid.sc_netid), |
3840 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3841 | RPC_DISPLAY_NETID)); | |
1da177e4 | 3842 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 3843 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
3844 | clp->cl_ipaddr, port >> 8, port & 255); |
3845 | ||
1bd714f2 | 3846 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
3847 | if (status != -NFS4ERR_CLID_INUSE) |
3848 | break; | |
fd954ae1 TM |
3849 | if (loop != 0) { |
3850 | ++clp->cl_id_uniquifier; | |
1da177e4 | 3851 | break; |
fd954ae1 TM |
3852 | } |
3853 | ++loop; | |
3854 | ssleep(clp->cl_lease_time / HZ + 1); | |
1da177e4 LT |
3855 | } |
3856 | return status; | |
3857 | } | |
3858 | ||
fd954ae1 | 3859 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
3860 | struct nfs4_setclientid_res *arg, |
3861 | struct rpc_cred *cred) | |
1da177e4 LT |
3862 | { |
3863 | struct nfs_fsinfo fsinfo; | |
3864 | struct rpc_message msg = { | |
3865 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 3866 | .rpc_argp = arg, |
1da177e4 | 3867 | .rpc_resp = &fsinfo, |
286d7d6a | 3868 | .rpc_cred = cred, |
1da177e4 LT |
3869 | }; |
3870 | unsigned long now; | |
3871 | int status; | |
3872 | ||
3873 | now = jiffies; | |
1bd714f2 | 3874 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
3875 | if (status == 0) { |
3876 | spin_lock(&clp->cl_lock); | |
3877 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
3878 | clp->cl_last_renewal = now; | |
3879 | spin_unlock(&clp->cl_lock); | |
3880 | } | |
3881 | return status; | |
3882 | } | |
3883 | ||
fe650407 TM |
3884 | struct nfs4_delegreturndata { |
3885 | struct nfs4_delegreturnargs args; | |
fa178f29 | 3886 | struct nfs4_delegreturnres res; |
fe650407 TM |
3887 | struct nfs_fh fh; |
3888 | nfs4_stateid stateid; | |
26e976a8 | 3889 | unsigned long timestamp; |
fa178f29 | 3890 | struct nfs_fattr fattr; |
fe650407 TM |
3891 | int rpc_status; |
3892 | }; | |
3893 | ||
fe650407 TM |
3894 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
3895 | { | |
3896 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 3897 | |
14516c3a TM |
3898 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
3899 | return; | |
938e1010 | 3900 | |
79708861 RL |
3901 | switch (task->tk_status) { |
3902 | case -NFS4ERR_STALE_STATEID: | |
3903 | case -NFS4ERR_EXPIRED: | |
3904 | case 0: | |
fa178f29 | 3905 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
3906 | break; |
3907 | default: | |
3908 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
3909 | -EAGAIN) { | |
d00c5d43 | 3910 | rpc_restart_call_prepare(task); |
79708861 RL |
3911 | return; |
3912 | } | |
3913 | } | |
3914 | data->rpc_status = task->tk_status; | |
fe650407 TM |
3915 | } |
3916 | ||
3917 | static void nfs4_delegreturn_release(void *calldata) | |
3918 | { | |
fe650407 TM |
3919 | kfree(calldata); |
3920 | } | |
3921 | ||
938e1010 AA |
3922 | #if defined(CONFIG_NFS_V4_1) |
3923 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
3924 | { | |
3925 | struct nfs4_delegreturndata *d_data; | |
3926 | ||
3927 | d_data = (struct nfs4_delegreturndata *)data; | |
3928 | ||
035168ab | 3929 | if (nfs4_setup_sequence(d_data->res.server, |
938e1010 | 3930 | &d_data->args.seq_args, |
9d12b216 | 3931 | &d_data->res.seq_res, task)) |
938e1010 AA |
3932 | return; |
3933 | rpc_call_start(task); | |
3934 | } | |
3935 | #endif /* CONFIG_NFS_V4_1 */ | |
3936 | ||
c8d149f3 | 3937 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
3938 | #if defined(CONFIG_NFS_V4_1) |
3939 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
3940 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
3941 | .rpc_call_done = nfs4_delegreturn_done, |
3942 | .rpc_release = nfs4_delegreturn_release, | |
3943 | }; | |
3944 | ||
e6f81075 | 3945 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
3946 | { |
3947 | struct nfs4_delegreturndata *data; | |
fa178f29 | 3948 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 3949 | struct rpc_task *task; |
5138fde0 TM |
3950 | struct rpc_message msg = { |
3951 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
3952 | .rpc_cred = cred, | |
3953 | }; | |
c970aa85 TM |
3954 | struct rpc_task_setup task_setup_data = { |
3955 | .rpc_client = server->client, | |
5138fde0 | 3956 | .rpc_message = &msg, |
c970aa85 TM |
3957 | .callback_ops = &nfs4_delegreturn_ops, |
3958 | .flags = RPC_TASK_ASYNC, | |
3959 | }; | |
e6f81075 | 3960 | int status = 0; |
fe650407 | 3961 | |
8535b2be | 3962 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
3963 | if (data == NULL) |
3964 | return -ENOMEM; | |
9d12b216 | 3965 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
3966 | data->args.fhandle = &data->fh; |
3967 | data->args.stateid = &data->stateid; | |
fa178f29 | 3968 | data->args.bitmask = server->attr_bitmask; |
fe650407 TM |
3969 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
3970 | memcpy(&data->stateid, stateid, sizeof(data->stateid)); | |
fa178f29 TM |
3971 | data->res.fattr = &data->fattr; |
3972 | data->res.server = server; | |
5138fde0 | 3973 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 3974 | data->timestamp = jiffies; |
fe650407 TM |
3975 | data->rpc_status = 0; |
3976 | ||
c970aa85 | 3977 | task_setup_data.callback_data = data; |
1174dd1f TM |
3978 | msg.rpc_argp = &data->args; |
3979 | msg.rpc_resp = &data->res; | |
c970aa85 | 3980 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 3981 | if (IS_ERR(task)) |
fe650407 | 3982 | return PTR_ERR(task); |
e6f81075 TM |
3983 | if (!issync) |
3984 | goto out; | |
fe650407 | 3985 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
3986 | if (status != 0) |
3987 | goto out; | |
3988 | status = data->rpc_status; | |
3989 | if (status != 0) | |
3990 | goto out; | |
3991 | nfs_refresh_inode(inode, &data->fattr); | |
3992 | out: | |
e6b3c4db | 3993 | rpc_put_task(task); |
fe650407 | 3994 | return status; |
1da177e4 LT |
3995 | } |
3996 | ||
e6f81075 | 3997 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
3998 | { |
3999 | struct nfs_server *server = NFS_SERVER(inode); | |
4000 | struct nfs4_exception exception = { }; | |
4001 | int err; | |
4002 | do { | |
e6f81075 | 4003 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
4004 | switch (err) { |
4005 | case -NFS4ERR_STALE_STATEID: | |
4006 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
4007 | case 0: |
4008 | return 0; | |
4009 | } | |
4010 | err = nfs4_handle_exception(server, err, &exception); | |
4011 | } while (exception.retry); | |
4012 | return err; | |
4013 | } | |
4014 | ||
4015 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
4016 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
4017 | ||
4018 | /* | |
4019 | * sleep, with exponential backoff, and retry the LOCK operation. | |
4020 | */ | |
4021 | static unsigned long | |
4022 | nfs4_set_lock_task_retry(unsigned long timeout) | |
4023 | { | |
d310310c | 4024 | freezable_schedule_timeout_killable(timeout); |
1da177e4 LT |
4025 | timeout <<= 1; |
4026 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
4027 | return NFS4_LOCK_MAXTIMEOUT; | |
4028 | return timeout; | |
4029 | } | |
4030 | ||
1da177e4 LT |
4031 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4032 | { | |
4033 | struct inode *inode = state->inode; | |
4034 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 4035 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 4036 | struct nfs_lockt_args arg = { |
1da177e4 | 4037 | .fh = NFS_FH(inode), |
911d1aaf | 4038 | .fl = request, |
1da177e4 | 4039 | }; |
911d1aaf TM |
4040 | struct nfs_lockt_res res = { |
4041 | .denied = request, | |
1da177e4 LT |
4042 | }; |
4043 | struct rpc_message msg = { | |
4044 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
4045 | .rpc_argp = &arg, | |
4046 | .rpc_resp = &res, | |
4047 | .rpc_cred = state->owner->so_cred, | |
4048 | }; | |
1da177e4 LT |
4049 | struct nfs4_lock_state *lsp; |
4050 | int status; | |
4051 | ||
911d1aaf | 4052 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
4053 | status = nfs4_set_lock_state(state, request); |
4054 | if (status != 0) | |
4055 | goto out; | |
4056 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 4057 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4058 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 4059 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
4060 | switch (status) { |
4061 | case 0: | |
4062 | request->fl_type = F_UNLCK; | |
4063 | break; | |
4064 | case -NFS4ERR_DENIED: | |
4065 | status = 0; | |
1da177e4 | 4066 | } |
70cc6487 | 4067 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 4068 | out: |
1da177e4 LT |
4069 | return status; |
4070 | } | |
4071 | ||
4072 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4073 | { | |
4074 | struct nfs4_exception exception = { }; | |
4075 | int err; | |
4076 | ||
4077 | do { | |
4078 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
4079 | _nfs4_proc_getlk(state, cmd, request), | |
4080 | &exception); | |
4081 | } while (exception.retry); | |
4082 | return err; | |
4083 | } | |
4084 | ||
4085 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
4086 | { | |
4087 | int res = 0; | |
4088 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
4089 | case FL_POSIX: | |
4090 | res = posix_lock_file_wait(file, fl); | |
4091 | break; | |
4092 | case FL_FLOCK: | |
4093 | res = flock_lock_file_wait(file, fl); | |
4094 | break; | |
4095 | default: | |
4096 | BUG(); | |
4097 | } | |
1da177e4 LT |
4098 | return res; |
4099 | } | |
4100 | ||
faf5f49c | 4101 | struct nfs4_unlockdata { |
911d1aaf TM |
4102 | struct nfs_locku_args arg; |
4103 | struct nfs_locku_res res; | |
faf5f49c TM |
4104 | struct nfs4_lock_state *lsp; |
4105 | struct nfs_open_context *ctx; | |
911d1aaf TM |
4106 | struct file_lock fl; |
4107 | const struct nfs_server *server; | |
26e976a8 | 4108 | unsigned long timestamp; |
faf5f49c TM |
4109 | }; |
4110 | ||
911d1aaf TM |
4111 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
4112 | struct nfs_open_context *ctx, | |
4113 | struct nfs4_lock_state *lsp, | |
4114 | struct nfs_seqid *seqid) | |
4115 | { | |
4116 | struct nfs4_unlockdata *p; | |
4117 | struct inode *inode = lsp->ls_state->inode; | |
4118 | ||
8535b2be | 4119 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
4120 | if (p == NULL) |
4121 | return NULL; | |
4122 | p->arg.fh = NFS_FH(inode); | |
4123 | p->arg.fl = &p->fl; | |
4124 | p->arg.seqid = seqid; | |
c1d51931 | 4125 | p->res.seqid = seqid; |
911d1aaf TM |
4126 | p->arg.stateid = &lsp->ls_stateid; |
4127 | p->lsp = lsp; | |
4128 | atomic_inc(&lsp->ls_count); | |
4129 | /* Ensure we don't close file until we're done freeing locks! */ | |
4130 | p->ctx = get_nfs_open_context(ctx); | |
4131 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4132 | p->server = NFS_SERVER(inode); | |
4133 | return p; | |
4134 | } | |
4135 | ||
06f814a3 | 4136 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 4137 | { |
963d8fe5 | 4138 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 4139 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
4140 | nfs4_put_lock_state(calldata->lsp); |
4141 | put_nfs_open_context(calldata->ctx); | |
4142 | kfree(calldata); | |
faf5f49c TM |
4143 | } |
4144 | ||
963d8fe5 | 4145 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 4146 | { |
963d8fe5 | 4147 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4148 | |
14516c3a TM |
4149 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
4150 | return; | |
faf5f49c TM |
4151 | switch (task->tk_status) { |
4152 | case 0: | |
4153 | memcpy(calldata->lsp->ls_stateid.data, | |
911d1aaf | 4154 | calldata->res.stateid.data, |
faf5f49c | 4155 | sizeof(calldata->lsp->ls_stateid.data)); |
26e976a8 | 4156 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 4157 | break; |
9e33bed5 TM |
4158 | case -NFS4ERR_BAD_STATEID: |
4159 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
4160 | case -NFS4ERR_STALE_STATEID: |
4161 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
4162 | break; |
4163 | default: | |
9e33bed5 | 4164 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
d00c5d43 | 4165 | rpc_restart_call_prepare(task); |
faf5f49c | 4166 | } |
faf5f49c TM |
4167 | } |
4168 | ||
4ce70ada | 4169 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 4170 | { |
4ce70ada | 4171 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4172 | |
911d1aaf | 4173 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c TM |
4174 | return; |
4175 | if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) { | |
963d8fe5 TM |
4176 | /* Note: exit _without_ running nfs4_locku_done */ |
4177 | task->tk_action = NULL; | |
faf5f49c TM |
4178 | return; |
4179 | } | |
26e976a8 | 4180 | calldata->timestamp = jiffies; |
035168ab | 4181 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 4182 | &calldata->arg.seq_args, |
9d12b216 | 4183 | &calldata->res.seq_res, task)) |
a893693c | 4184 | return; |
5138fde0 | 4185 | rpc_call_start(task); |
faf5f49c TM |
4186 | } |
4187 | ||
963d8fe5 | 4188 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 4189 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 4190 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 4191 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
4192 | }; |
4193 | ||
a5d16a4d TM |
4194 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
4195 | struct nfs_open_context *ctx, | |
4196 | struct nfs4_lock_state *lsp, | |
4197 | struct nfs_seqid *seqid) | |
4198 | { | |
4199 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
4200 | struct rpc_message msg = { |
4201 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
4202 | .rpc_cred = ctx->cred, | |
4203 | }; | |
c970aa85 TM |
4204 | struct rpc_task_setup task_setup_data = { |
4205 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 4206 | .rpc_message = &msg, |
c970aa85 | 4207 | .callback_ops = &nfs4_locku_ops, |
101070ca | 4208 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4209 | .flags = RPC_TASK_ASYNC, |
4210 | }; | |
a5d16a4d | 4211 | |
137d6aca FF |
4212 | /* Ensure this is an unlock - when canceling a lock, the |
4213 | * canceled lock is passed in, and it won't be an unlock. | |
4214 | */ | |
4215 | fl->fl_type = F_UNLCK; | |
4216 | ||
a5d16a4d TM |
4217 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
4218 | if (data == NULL) { | |
4219 | nfs_free_seqid(seqid); | |
4220 | return ERR_PTR(-ENOMEM); | |
4221 | } | |
4222 | ||
9d12b216 | 4223 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4224 | msg.rpc_argp = &data->arg; |
4225 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4226 | task_setup_data.callback_data = data; |
4227 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
4228 | } |
4229 | ||
faf5f49c TM |
4230 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
4231 | { | |
19e03c57 | 4232 | struct nfs_inode *nfsi = NFS_I(state->inode); |
911d1aaf | 4233 | struct nfs_seqid *seqid; |
1da177e4 | 4234 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
4235 | struct rpc_task *task; |
4236 | int status = 0; | |
536ff0f8 | 4237 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 4238 | |
8d0a8a9d | 4239 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
4240 | /* Unlock _before_ we do the RPC call */ |
4241 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
4242 | down_read(&nfsi->rwsem); |
4243 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
4244 | up_read(&nfsi->rwsem); | |
9b073574 | 4245 | goto out; |
19e03c57 TM |
4246 | } |
4247 | up_read(&nfsi->rwsem); | |
8d0a8a9d | 4248 | if (status != 0) |
9b073574 TM |
4249 | goto out; |
4250 | /* Is this a delegated lock? */ | |
4251 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
4252 | goto out; | |
8d0a8a9d | 4253 | lsp = request->fl_u.nfs4_fl.owner; |
8535b2be | 4254 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 4255 | status = -ENOMEM; |
911d1aaf | 4256 | if (seqid == NULL) |
9b073574 | 4257 | goto out; |
cd3758e3 | 4258 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
4259 | status = PTR_ERR(task); |
4260 | if (IS_ERR(task)) | |
9b073574 | 4261 | goto out; |
a5d16a4d | 4262 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 4263 | rpc_put_task(task); |
9b073574 | 4264 | out: |
536ff0f8 | 4265 | request->fl_flags = fl_flags; |
1da177e4 LT |
4266 | return status; |
4267 | } | |
4268 | ||
a5d16a4d TM |
4269 | struct nfs4_lockdata { |
4270 | struct nfs_lock_args arg; | |
4271 | struct nfs_lock_res res; | |
4272 | struct nfs4_lock_state *lsp; | |
4273 | struct nfs_open_context *ctx; | |
4274 | struct file_lock fl; | |
26e976a8 | 4275 | unsigned long timestamp; |
a5d16a4d TM |
4276 | int rpc_status; |
4277 | int cancelled; | |
66179efe | 4278 | struct nfs_server *server; |
a5d16a4d TM |
4279 | }; |
4280 | ||
4281 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
4282 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
4283 | gfp_t gfp_mask) | |
1da177e4 | 4284 | { |
a5d16a4d TM |
4285 | struct nfs4_lockdata *p; |
4286 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 4287 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 4288 | |
8535b2be | 4289 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
4290 | if (p == NULL) |
4291 | return NULL; | |
4292 | ||
4293 | p->arg.fh = NFS_FH(inode); | |
4294 | p->arg.fl = &p->fl; | |
8535b2be | 4295 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4296 | if (p->arg.open_seqid == NULL) |
4297 | goto out_free; | |
8535b2be | 4298 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4299 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4300 | goto out_free_seqid; |
a5d16a4d | 4301 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4302 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 4303 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4304 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 4305 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4306 | p->lsp = lsp; |
66179efe | 4307 | p->server = server; |
a5d16a4d TM |
4308 | atomic_inc(&lsp->ls_count); |
4309 | p->ctx = get_nfs_open_context(ctx); | |
4310 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4311 | return p; | |
2f74c0a0 TM |
4312 | out_free_seqid: |
4313 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4314 | out_free: |
4315 | kfree(p); | |
4316 | return NULL; | |
4317 | } | |
4318 | ||
4319 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4320 | { | |
4321 | struct nfs4_lockdata *data = calldata; | |
4322 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4323 | |
3110ff80 | 4324 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
4325 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
4326 | return; | |
a5d16a4d TM |
4327 | /* Do we need to do an open_to_lock_owner? */ |
4328 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 TM |
4329 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
4330 | return; | |
a5d16a4d TM |
4331 | data->arg.open_stateid = &state->stateid; |
4332 | data->arg.new_lock_owner = 1; | |
c1d51931 | 4333 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4334 | } else |
4335 | data->arg.new_lock_owner = 0; | |
26e976a8 | 4336 | data->timestamp = jiffies; |
035168ab TM |
4337 | if (nfs4_setup_sequence(data->server, |
4338 | &data->arg.seq_args, | |
9d12b216 | 4339 | &data->res.seq_res, task)) |
66179efe | 4340 | return; |
5138fde0 | 4341 | rpc_call_start(task); |
3110ff80 | 4342 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
a5d16a4d TM |
4343 | } |
4344 | ||
b257957e AB |
4345 | static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata) |
4346 | { | |
4347 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
4348 | nfs4_lock_prepare(task, calldata); | |
4349 | } | |
4350 | ||
a5d16a4d TM |
4351 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4352 | { | |
4353 | struct nfs4_lockdata *data = calldata; | |
4354 | ||
3110ff80 | 4355 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4356 | |
14516c3a TM |
4357 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4358 | return; | |
66179efe | 4359 | |
a5d16a4d | 4360 | data->rpc_status = task->tk_status; |
a5d16a4d | 4361 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4362 | if (data->rpc_status == 0) |
4363 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4364 | else | |
4365 | goto out; | |
4366 | } | |
4367 | if (data->rpc_status == 0) { | |
4368 | memcpy(data->lsp->ls_stateid.data, data->res.stateid.data, | |
4369 | sizeof(data->lsp->ls_stateid.data)); | |
4370 | data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; | |
3d4ff43d | 4371 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 4372 | } |
a5d16a4d | 4373 | out: |
3110ff80 | 4374 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4375 | } |
4376 | ||
4377 | static void nfs4_lock_release(void *calldata) | |
4378 | { | |
4379 | struct nfs4_lockdata *data = calldata; | |
4380 | ||
3110ff80 | 4381 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4382 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4383 | if (data->cancelled != 0) { |
4384 | struct rpc_task *task; | |
4385 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4386 | data->arg.lock_seqid); | |
4387 | if (!IS_ERR(task)) | |
bf294b41 | 4388 | rpc_put_task_async(task); |
3110ff80 | 4389 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4390 | } else |
4391 | nfs_free_seqid(data->arg.lock_seqid); | |
4392 | nfs4_put_lock_state(data->lsp); | |
4393 | put_nfs_open_context(data->ctx); | |
4394 | kfree(data); | |
3110ff80 | 4395 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4396 | } |
4397 | ||
4398 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4399 | .rpc_call_prepare = nfs4_lock_prepare, | |
4400 | .rpc_call_done = nfs4_lock_done, | |
4401 | .rpc_release = nfs4_lock_release, | |
4402 | }; | |
4403 | ||
b257957e AB |
4404 | static const struct rpc_call_ops nfs4_recover_lock_ops = { |
4405 | .rpc_call_prepare = nfs4_recover_lock_prepare, | |
4406 | .rpc_call_done = nfs4_lock_done, | |
4407 | .rpc_release = nfs4_lock_release, | |
4408 | }; | |
4409 | ||
2bee72a6 TM |
4410 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4411 | { | |
2bee72a6 TM |
4412 | switch (error) { |
4413 | case -NFS4ERR_ADMIN_REVOKED: | |
4414 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 4415 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 TM |
4416 | if (new_lock_owner != 0 || |
4417 | (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0) | |
ecac799a | 4418 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
4419 | break; |
4420 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 4421 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
4422 | case -NFS4ERR_EXPIRED: |
4423 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
4424 | }; |
4425 | } | |
4426 | ||
afe6c27c | 4427 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4428 | { |
4429 | struct nfs4_lockdata *data; | |
4430 | struct rpc_task *task; | |
5138fde0 TM |
4431 | struct rpc_message msg = { |
4432 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4433 | .rpc_cred = state->owner->so_cred, | |
4434 | }; | |
c970aa85 TM |
4435 | struct rpc_task_setup task_setup_data = { |
4436 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4437 | .rpc_message = &msg, |
c970aa85 | 4438 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4439 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4440 | .flags = RPC_TASK_ASYNC, |
4441 | }; | |
a5d16a4d TM |
4442 | int ret; |
4443 | ||
3110ff80 | 4444 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4445 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4446 | fl->fl_u.nfs4_fl.owner, |
4447 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4448 | if (data == NULL) |
4449 | return -ENOMEM; | |
4450 | if (IS_SETLKW(cmd)) | |
4451 | data->arg.block = 1; | |
b257957e AB |
4452 | if (recovery_type > NFS_LOCK_NEW) { |
4453 | if (recovery_type == NFS_LOCK_RECLAIM) | |
afe6c27c | 4454 | data->arg.reclaim = NFS_LOCK_RECLAIM; |
b257957e AB |
4455 | task_setup_data.callback_ops = &nfs4_recover_lock_ops; |
4456 | } | |
9d12b216 | 4457 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4458 | msg.rpc_argp = &data->arg; |
4459 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4460 | task_setup_data.callback_data = data; |
4461 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 4462 | if (IS_ERR(task)) |
a5d16a4d | 4463 | return PTR_ERR(task); |
a5d16a4d TM |
4464 | ret = nfs4_wait_for_completion_rpc_task(task); |
4465 | if (ret == 0) { | |
4466 | ret = data->rpc_status; | |
2bee72a6 TM |
4467 | if (ret) |
4468 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4469 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4470 | } else |
4471 | data->cancelled = 1; | |
e6b3c4db | 4472 | rpc_put_task(task); |
3110ff80 | 4473 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4474 | return ret; |
1da177e4 LT |
4475 | } |
4476 | ||
4477 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4478 | { | |
202b50dc TM |
4479 | struct nfs_server *server = NFS_SERVER(state->inode); |
4480 | struct nfs4_exception exception = { }; | |
4481 | int err; | |
4482 | ||
4483 | do { | |
42a2d13e TM |
4484 | /* Cache the lock if possible... */ |
4485 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4486 | return 0; | |
afe6c27c | 4487 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 4488 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
4489 | break; |
4490 | nfs4_handle_exception(server, err, &exception); | |
4491 | } while (exception.retry); | |
4492 | return err; | |
1da177e4 LT |
4493 | } |
4494 | ||
4495 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4496 | { | |
202b50dc TM |
4497 | struct nfs_server *server = NFS_SERVER(state->inode); |
4498 | struct nfs4_exception exception = { }; | |
4499 | int err; | |
4500 | ||
6bfc93ef TM |
4501 | err = nfs4_set_lock_state(state, request); |
4502 | if (err != 0) | |
4503 | return err; | |
202b50dc | 4504 | do { |
42a2d13e TM |
4505 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4506 | return 0; | |
afe6c27c | 4507 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
4508 | switch (err) { |
4509 | default: | |
4510 | goto out; | |
4511 | case -NFS4ERR_GRACE: | |
4512 | case -NFS4ERR_DELAY: | |
4513 | nfs4_handle_exception(server, err, &exception); | |
4514 | err = 0; | |
4515 | } | |
202b50dc | 4516 | } while (exception.retry); |
a9ed2e25 | 4517 | out: |
202b50dc | 4518 | return err; |
1da177e4 LT |
4519 | } |
4520 | ||
f062eb6c | 4521 | #if defined(CONFIG_NFS_V4_1) |
b01dd1d8 | 4522 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 4523 | { |
b01dd1d8 BS |
4524 | int status, ret = NFS_OK; |
4525 | struct nfs4_lock_state *lsp; | |
f062eb6c BS |
4526 | struct nfs_server *server = NFS_SERVER(state->inode); |
4527 | ||
b01dd1d8 BS |
4528 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
4529 | if (lsp->ls_flags & NFS_LOCK_INITIALIZED) { | |
4530 | status = nfs41_test_stateid(server, &lsp->ls_stateid); | |
4531 | if (status != NFS_OK) { | |
4532 | nfs41_free_stateid(server, &lsp->ls_stateid); | |
4533 | lsp->ls_flags &= ~NFS_LOCK_INITIALIZED; | |
4534 | ret = status; | |
4535 | } | |
4536 | } | |
4537 | }; | |
4538 | ||
4539 | return ret; | |
4540 | } | |
4541 | ||
4542 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4543 | { | |
4544 | int status = NFS_OK; | |
4545 | ||
4546 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
4547 | status = nfs41_check_expired_locks(state); | |
f062eb6c | 4548 | if (status == NFS_OK) |
b01dd1d8 | 4549 | return status; |
f062eb6c BS |
4550 | return nfs4_lock_expired(state, request); |
4551 | } | |
4552 | #endif | |
4553 | ||
1da177e4 LT |
4554 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4555 | { | |
19e03c57 | 4556 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 4557 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 4558 | int status = -ENOLCK; |
1da177e4 | 4559 | |
8e469ebd TM |
4560 | if ((fl_flags & FL_POSIX) && |
4561 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
4562 | goto out; | |
6bfc93ef | 4563 | /* Is this a delegated open? */ |
6bfc93ef TM |
4564 | status = nfs4_set_lock_state(state, request); |
4565 | if (status != 0) | |
4566 | goto out; | |
01c3b861 TM |
4567 | request->fl_flags |= FL_ACCESS; |
4568 | status = do_vfs_lock(request->fl_file, request); | |
4569 | if (status < 0) | |
4570 | goto out; | |
19e03c57 | 4571 | down_read(&nfsi->rwsem); |
01c3b861 | 4572 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 4573 | /* Yes: cache locks! */ |
01c3b861 | 4574 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
4575 | request->fl_flags = fl_flags & ~FL_SLEEP; |
4576 | status = do_vfs_lock(request->fl_file, request); | |
4577 | goto out_unlock; | |
01c3b861 | 4578 | } |
afe6c27c | 4579 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 4580 | if (status != 0) |
01c3b861 | 4581 | goto out_unlock; |
6bfc93ef | 4582 | /* Note: we always want to sleep here! */ |
01c3b861 | 4583 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 4584 | if (do_vfs_lock(request->fl_file, request) < 0) |
a030889a WAA |
4585 | printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " |
4586 | "manager!\n", __func__); | |
01c3b861 | 4587 | out_unlock: |
19e03c57 | 4588 | up_read(&nfsi->rwsem); |
01c3b861 TM |
4589 | out: |
4590 | request->fl_flags = fl_flags; | |
1da177e4 LT |
4591 | return status; |
4592 | } | |
4593 | ||
4594 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4595 | { | |
4596 | struct nfs4_exception exception = { }; | |
4597 | int err; | |
4598 | ||
4599 | do { | |
965b5d67 TM |
4600 | err = _nfs4_proc_setlk(state, cmd, request); |
4601 | if (err == -NFS4ERR_DENIED) | |
4602 | err = -EAGAIN; | |
1da177e4 | 4603 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 4604 | err, &exception); |
1da177e4 LT |
4605 | } while (exception.retry); |
4606 | return err; | |
4607 | } | |
4608 | ||
4609 | static int | |
4610 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
4611 | { | |
4612 | struct nfs_open_context *ctx; | |
4613 | struct nfs4_state *state; | |
4614 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
4615 | int status; | |
4616 | ||
4617 | /* verify open state */ | |
cd3758e3 | 4618 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
4619 | state = ctx->state; |
4620 | ||
4621 | if (request->fl_start < 0 || request->fl_end < 0) | |
4622 | return -EINVAL; | |
4623 | ||
d953126a TM |
4624 | if (IS_GETLK(cmd)) { |
4625 | if (state != NULL) | |
4626 | return nfs4_proc_getlk(state, F_GETLK, request); | |
4627 | return 0; | |
4628 | } | |
1da177e4 LT |
4629 | |
4630 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
4631 | return -EINVAL; | |
4632 | ||
d953126a TM |
4633 | if (request->fl_type == F_UNLCK) { |
4634 | if (state != NULL) | |
4635 | return nfs4_proc_unlck(state, cmd, request); | |
4636 | return 0; | |
4637 | } | |
1da177e4 | 4638 | |
d953126a TM |
4639 | if (state == NULL) |
4640 | return -ENOLCK; | |
1da177e4 LT |
4641 | do { |
4642 | status = nfs4_proc_setlk(state, cmd, request); | |
4643 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
4644 | break; | |
4645 | timeout = nfs4_set_lock_task_retry(timeout); | |
4646 | status = -ERESTARTSYS; | |
4647 | if (signalled()) | |
4648 | break; | |
4649 | } while(status < 0); | |
1da177e4 LT |
4650 | return status; |
4651 | } | |
4652 | ||
888e694c TM |
4653 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
4654 | { | |
4655 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4656 | struct nfs4_exception exception = { }; | |
4657 | int err; | |
4658 | ||
4659 | err = nfs4_set_lock_state(state, fl); | |
4660 | if (err != 0) | |
4661 | goto out; | |
4662 | do { | |
afe6c27c | 4663 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
d5122201 TM |
4664 | switch (err) { |
4665 | default: | |
a030889a WAA |
4666 | printk(KERN_ERR "NFS: %s: unhandled error " |
4667 | "%d.\n", __func__, err); | |
d5122201 | 4668 | case 0: |
965b5d67 | 4669 | case -ESTALE: |
d5122201 TM |
4670 | goto out; |
4671 | case -NFS4ERR_EXPIRED: | |
0ced63d1 | 4672 | nfs4_schedule_stateid_recovery(server, state); |
d5122201 | 4673 | case -NFS4ERR_STALE_CLIENTID: |
965b5d67 | 4674 | case -NFS4ERR_STALE_STATEID: |
0400a6b0 TM |
4675 | nfs4_schedule_lease_recovery(server->nfs_client); |
4676 | goto out; | |
74e7bb73 RL |
4677 | case -NFS4ERR_BADSESSION: |
4678 | case -NFS4ERR_BADSLOT: | |
4679 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4680 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4681 | case -NFS4ERR_DEADSESSION: | |
0400a6b0 | 4682 | nfs4_schedule_session_recovery(server->nfs_client->cl_session); |
d5122201 | 4683 | goto out; |
965b5d67 TM |
4684 | case -ERESTARTSYS: |
4685 | /* | |
4686 | * The show must go on: exit, but mark the | |
4687 | * stateid as needing recovery. | |
4688 | */ | |
4689 | case -NFS4ERR_ADMIN_REVOKED: | |
4690 | case -NFS4ERR_BAD_STATEID: | |
4691 | case -NFS4ERR_OPENMODE: | |
0400a6b0 | 4692 | nfs4_schedule_stateid_recovery(server, state); |
965b5d67 TM |
4693 | err = 0; |
4694 | goto out; | |
168667c4 TM |
4695 | case -EKEYEXPIRED: |
4696 | /* | |
4697 | * User RPCSEC_GSS context has expired. | |
4698 | * We cannot recover this stateid now, so | |
4699 | * skip it and allow recovery thread to | |
4700 | * proceed. | |
4701 | */ | |
4702 | err = 0; | |
4703 | goto out; | |
965b5d67 TM |
4704 | case -ENOMEM: |
4705 | case -NFS4ERR_DENIED: | |
4706 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
4707 | err = 0; | |
4708 | goto out; | |
d5122201 TM |
4709 | case -NFS4ERR_DELAY: |
4710 | break; | |
4711 | } | |
888e694c TM |
4712 | err = nfs4_handle_exception(server, err, &exception); |
4713 | } while (exception.retry); | |
4714 | out: | |
4715 | return err; | |
4716 | } | |
6b3b5496 | 4717 | |
d3c7b7cc TM |
4718 | static void nfs4_release_lockowner_release(void *calldata) |
4719 | { | |
4720 | kfree(calldata); | |
4721 | } | |
4722 | ||
4723 | const struct rpc_call_ops nfs4_release_lockowner_ops = { | |
4724 | .rpc_release = nfs4_release_lockowner_release, | |
4725 | }; | |
4726 | ||
4727 | void nfs4_release_lockowner(const struct nfs4_lock_state *lsp) | |
4728 | { | |
4729 | struct nfs_server *server = lsp->ls_state->owner->so_server; | |
4730 | struct nfs_release_lockowner_args *args; | |
4731 | struct rpc_message msg = { | |
4732 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
4733 | }; | |
4734 | ||
4735 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
4736 | return; | |
4737 | args = kmalloc(sizeof(*args), GFP_NOFS); | |
4738 | if (!args) | |
4739 | return; | |
4740 | args->lock_owner.clientid = server->nfs_client->cl_clientid; | |
48c22eb2 | 4741 | args->lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4742 | args->lock_owner.s_dev = server->s_dev; |
d3c7b7cc TM |
4743 | msg.rpc_argp = args; |
4744 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, args); | |
4745 | } | |
4746 | ||
aa1870af BF |
4747 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
4748 | ||
64c2ce8b AK |
4749 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
4750 | const void *buf, size_t buflen, | |
4751 | int flags, int type) | |
6b3b5496 | 4752 | { |
64c2ce8b AK |
4753 | if (strcmp(key, "") != 0) |
4754 | return -EINVAL; | |
4b580ee3 | 4755 | |
64c2ce8b | 4756 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4757 | } |
4758 | ||
64c2ce8b AK |
4759 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
4760 | void *buf, size_t buflen, int type) | |
6b3b5496 | 4761 | { |
64c2ce8b AK |
4762 | if (strcmp(key, "") != 0) |
4763 | return -EINVAL; | |
aa1870af | 4764 | |
64c2ce8b | 4765 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4766 | } |
4767 | ||
64c2ce8b AK |
4768 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
4769 | size_t list_len, const char *name, | |
4770 | size_t name_len, int type) | |
6b3b5496 | 4771 | { |
64c2ce8b | 4772 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 4773 | |
096455a2 BF |
4774 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
4775 | return 0; | |
64c2ce8b AK |
4776 | |
4777 | if (list && len <= list_len) | |
4778 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 4779 | return len; |
6b3b5496 BF |
4780 | } |
4781 | ||
533eb461 AA |
4782 | /* |
4783 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
4784 | */ | |
69aaaae1 TM |
4785 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
4786 | { | |
533eb461 AA |
4787 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
4788 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
4789 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
4790 | (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL))) | |
69aaaae1 TM |
4791 | return; |
4792 | ||
4793 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
4794 | NFS_ATTR_FATTR_NLINK; | |
4795 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; | |
4796 | fattr->nlink = 2; | |
4797 | } | |
4798 | ||
56659e99 | 4799 | int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, |
7aaa0b3b | 4800 | struct nfs4_fs_locations *fs_locations, struct page *page) |
683b57b4 TM |
4801 | { |
4802 | struct nfs_server *server = NFS_SERVER(dir); | |
4803 | u32 bitmask[2] = { | |
361e624f | 4804 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
4805 | }; |
4806 | struct nfs4_fs_locations_arg args = { | |
4807 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 4808 | .name = name, |
683b57b4 TM |
4809 | .page = page, |
4810 | .bitmask = bitmask, | |
4811 | }; | |
22958463 BH |
4812 | struct nfs4_fs_locations_res res = { |
4813 | .fs_locations = fs_locations, | |
4814 | }; | |
683b57b4 TM |
4815 | struct rpc_message msg = { |
4816 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
4817 | .rpc_argp = &args, | |
22958463 | 4818 | .rpc_resp = &res, |
683b57b4 TM |
4819 | }; |
4820 | int status; | |
4821 | ||
3110ff80 | 4822 | dprintk("%s: start\n", __func__); |
533eb461 AA |
4823 | |
4824 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
4825 | * is not supported */ | |
4826 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
4827 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
4828 | else | |
4829 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
4830 | ||
c228fd3a | 4831 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 4832 | fs_locations->server = server; |
830b8e33 | 4833 | fs_locations->nlocations = 0; |
7c513058 | 4834 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 4835 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
4836 | return status; |
4837 | } | |
4838 | ||
5a5ea0d4 BS |
4839 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) |
4840 | { | |
4841 | int status; | |
4842 | struct nfs4_secinfo_arg args = { | |
4843 | .dir_fh = NFS_FH(dir), | |
4844 | .name = name, | |
4845 | }; | |
4846 | struct nfs4_secinfo_res res = { | |
4847 | .flavors = flavors, | |
4848 | }; | |
4849 | struct rpc_message msg = { | |
4850 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
4851 | .rpc_argp = &args, | |
4852 | .rpc_resp = &res, | |
4853 | }; | |
4854 | ||
4855 | dprintk("NFS call secinfo %s\n", name->name); | |
4856 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); | |
4857 | dprintk("NFS reply secinfo: %d\n", status); | |
4858 | return status; | |
4859 | } | |
4860 | ||
4861 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) | |
4862 | { | |
4863 | struct nfs4_exception exception = { }; | |
4864 | int err; | |
4865 | do { | |
4866 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
4867 | _nfs4_proc_secinfo(dir, name, flavors), | |
4868 | &exception); | |
4869 | } while (exception.retry); | |
4870 | return err; | |
4871 | } | |
4872 | ||
557134a3 | 4873 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
4874 | /* |
4875 | * Check the exchange flags returned by the server for invalid flags, having | |
4876 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
4877 | * DS flags set. | |
4878 | */ | |
4879 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
4880 | { | |
4881 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
4882 | goto out_inval; | |
4883 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
4884 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
4885 | goto out_inval; | |
4886 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
4887 | goto out_inval; | |
4888 | return NFS_OK; | |
4889 | out_inval: | |
4890 | return -NFS4ERR_INVAL; | |
4891 | } | |
4892 | ||
78fe0f41 WAA |
4893 | static bool |
4894 | nfs41_same_server_scope(struct server_scope *a, struct server_scope *b) | |
4895 | { | |
4896 | if (a->server_scope_sz == b->server_scope_sz && | |
4897 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
4898 | return true; | |
4899 | ||
4900 | return false; | |
4901 | } | |
4902 | ||
99fe60d0 BH |
4903 | /* |
4904 | * nfs4_proc_exchange_id() | |
4905 | * | |
4906 | * Since the clientid has expired, all compounds using sessions | |
4907 | * associated with the stale clientid will be returning | |
4908 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
4909 | * be in some phase of session reset. | |
4910 | */ | |
4d643d1d | 4911 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
4912 | { |
4913 | nfs4_verifier verifier; | |
4914 | struct nfs41_exchange_id_args args = { | |
4915 | .client = clp, | |
357f54d6 | 4916 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, |
99fe60d0 BH |
4917 | }; |
4918 | struct nfs41_exchange_id_res res = { | |
4919 | .client = clp, | |
4920 | }; | |
4921 | int status; | |
4922 | struct rpc_message msg = { | |
4923 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
4924 | .rpc_argp = &args, | |
4925 | .rpc_resp = &res, | |
4926 | .rpc_cred = cred, | |
4927 | }; | |
4928 | __be32 *p; | |
4929 | ||
4930 | dprintk("--> %s\n", __func__); | |
4931 | BUG_ON(clp == NULL); | |
a7b72103 | 4932 | |
99fe60d0 BH |
4933 | p = (u32 *)verifier.data; |
4934 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); | |
4935 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
4936 | args.verifier = &verifier; | |
4937 | ||
c7a360b0 AA |
4938 | args.id_len = scnprintf(args.id, sizeof(args.id), |
4939 | "%s/%s.%s/%u", | |
4940 | clp->cl_ipaddr, | |
4941 | init_utsname()->nodename, | |
4942 | init_utsname()->domainname, | |
4943 | clp->cl_rpcclient->cl_auth->au_flavor); | |
99fe60d0 | 4944 | |
78fe0f41 WAA |
4945 | res.server_scope = kzalloc(sizeof(struct server_scope), GFP_KERNEL); |
4946 | if (unlikely(!res.server_scope)) | |
4947 | return -ENOMEM; | |
4948 | ||
1bd714f2 | 4949 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c7a360b0 AA |
4950 | if (!status) |
4951 | status = nfs4_check_cl_exchange_flags(clp->cl_exchange_flags); | |
78fe0f41 WAA |
4952 | |
4953 | if (!status) { | |
4954 | if (clp->server_scope && | |
4955 | !nfs41_same_server_scope(clp->server_scope, | |
4956 | res.server_scope)) { | |
4957 | dprintk("%s: server_scope mismatch detected\n", | |
4958 | __func__); | |
4959 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
4960 | kfree(clp->server_scope); | |
4961 | clp->server_scope = NULL; | |
4962 | } | |
4963 | ||
4964 | if (!clp->server_scope) | |
4965 | clp->server_scope = res.server_scope; | |
4966 | else | |
4967 | kfree(res.server_scope); | |
4968 | } | |
4969 | ||
99fe60d0 BH |
4970 | dprintk("<-- %s status= %d\n", __func__, status); |
4971 | return status; | |
4972 | } | |
4973 | ||
2050f0cc AA |
4974 | struct nfs4_get_lease_time_data { |
4975 | struct nfs4_get_lease_time_args *args; | |
4976 | struct nfs4_get_lease_time_res *res; | |
4977 | struct nfs_client *clp; | |
4978 | }; | |
4979 | ||
4980 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
4981 | void *calldata) | |
4982 | { | |
4983 | int ret; | |
4984 | struct nfs4_get_lease_time_data *data = | |
4985 | (struct nfs4_get_lease_time_data *)calldata; | |
4986 | ||
4987 | dprintk("--> %s\n", __func__); | |
689cf5c1 | 4988 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
2050f0cc AA |
4989 | /* just setup sequence, do not trigger session recovery |
4990 | since we're invoked within one */ | |
4991 | ret = nfs41_setup_sequence(data->clp->cl_session, | |
689cf5c1 | 4992 | &data->args->la_seq_args, |
9d12b216 | 4993 | &data->res->lr_seq_res, task); |
2050f0cc AA |
4994 | |
4995 | BUG_ON(ret == -EAGAIN); | |
4996 | rpc_call_start(task); | |
4997 | dprintk("<-- %s\n", __func__); | |
4998 | } | |
4999 | ||
5000 | /* | |
5001 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
5002 | * from sequence operation or clientid errors. | |
5003 | */ | |
5004 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
5005 | { | |
5006 | struct nfs4_get_lease_time_data *data = | |
5007 | (struct nfs4_get_lease_time_data *)calldata; | |
5008 | ||
5009 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5010 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
5011 | return; | |
2050f0cc AA |
5012 | switch (task->tk_status) { |
5013 | case -NFS4ERR_DELAY: | |
5014 | case -NFS4ERR_GRACE: | |
5015 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
5016 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
5017 | task->tk_status = 0; | |
a8a4ae3a AA |
5018 | /* fall through */ |
5019 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 5020 | rpc_restart_call_prepare(task); |
2050f0cc AA |
5021 | return; |
5022 | } | |
2050f0cc AA |
5023 | dprintk("<-- %s\n", __func__); |
5024 | } | |
5025 | ||
5026 | struct rpc_call_ops nfs4_get_lease_time_ops = { | |
5027 | .rpc_call_prepare = nfs4_get_lease_time_prepare, | |
5028 | .rpc_call_done = nfs4_get_lease_time_done, | |
5029 | }; | |
5030 | ||
5031 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
5032 | { | |
5033 | struct rpc_task *task; | |
5034 | struct nfs4_get_lease_time_args args; | |
5035 | struct nfs4_get_lease_time_res res = { | |
5036 | .lr_fsinfo = fsinfo, | |
5037 | }; | |
5038 | struct nfs4_get_lease_time_data data = { | |
5039 | .args = &args, | |
5040 | .res = &res, | |
5041 | .clp = clp, | |
5042 | }; | |
5043 | struct rpc_message msg = { | |
5044 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
5045 | .rpc_argp = &args, | |
5046 | .rpc_resp = &res, | |
5047 | }; | |
5048 | struct rpc_task_setup task_setup = { | |
5049 | .rpc_client = clp->cl_rpcclient, | |
5050 | .rpc_message = &msg, | |
5051 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
5052 | .callback_data = &data, |
5053 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
5054 | }; |
5055 | int status; | |
5056 | ||
9d12b216 | 5057 | nfs41_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
2050f0cc AA |
5058 | dprintk("--> %s\n", __func__); |
5059 | task = rpc_run_task(&task_setup); | |
5060 | ||
5061 | if (IS_ERR(task)) | |
5062 | status = PTR_ERR(task); | |
5063 | else { | |
5064 | status = task->tk_status; | |
5065 | rpc_put_task(task); | |
5066 | } | |
5067 | dprintk("<-- %s return %d\n", __func__, status); | |
5068 | ||
5069 | return status; | |
5070 | } | |
5071 | ||
b73dafa7 RL |
5072 | /* |
5073 | * Reset a slot table | |
5074 | */ | |
104aeba4 AA |
5075 | static int nfs4_reset_slot_table(struct nfs4_slot_table *tbl, u32 max_reqs, |
5076 | int ivalue) | |
ac72b7b3 | 5077 | { |
104aeba4 | 5078 | struct nfs4_slot *new = NULL; |
b73dafa7 | 5079 | int i; |
ac72b7b3 AA |
5080 | int ret = 0; |
5081 | ||
104aeba4 AA |
5082 | dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__, |
5083 | max_reqs, tbl->max_slots); | |
ac72b7b3 | 5084 | |
104aeba4 AA |
5085 | /* Does the newly negotiated max_reqs match the existing slot table? */ |
5086 | if (max_reqs != tbl->max_slots) { | |
5087 | ret = -ENOMEM; | |
5088 | new = kmalloc(max_reqs * sizeof(struct nfs4_slot), | |
8535b2be | 5089 | GFP_NOFS); |
104aeba4 AA |
5090 | if (!new) |
5091 | goto out; | |
5092 | ret = 0; | |
5093 | kfree(tbl->slots); | |
ac72b7b3 AA |
5094 | } |
5095 | spin_lock(&tbl->slot_tbl_lock); | |
104aeba4 AA |
5096 | if (new) { |
5097 | tbl->slots = new; | |
5098 | tbl->max_slots = max_reqs; | |
5099 | } | |
5100 | for (i = 0; i < tbl->max_slots; ++i) | |
b73dafa7 | 5101 | tbl->slots[i].seq_nr = ivalue; |
ac72b7b3 AA |
5102 | spin_unlock(&tbl->slot_tbl_lock); |
5103 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, | |
5104 | tbl, tbl->slots, tbl->max_slots); | |
5105 | out: | |
5106 | dprintk("<-- %s: return %d\n", __func__, ret); | |
5107 | return ret; | |
5108 | } | |
5109 | ||
f8625a6a RL |
5110 | /* Destroy the slot table */ |
5111 | static void nfs4_destroy_slot_tables(struct nfs4_session *session) | |
5112 | { | |
5113 | if (session->fc_slot_table.slots != NULL) { | |
5114 | kfree(session->fc_slot_table.slots); | |
5115 | session->fc_slot_table.slots = NULL; | |
5116 | } | |
5117 | if (session->bc_slot_table.slots != NULL) { | |
5118 | kfree(session->bc_slot_table.slots); | |
5119 | session->bc_slot_table.slots = NULL; | |
5120 | } | |
5121 | return; | |
5122 | } | |
5123 | ||
fc931582 AA |
5124 | /* |
5125 | * Initialize slot table | |
5126 | */ | |
050047ce RL |
5127 | static int nfs4_init_slot_table(struct nfs4_slot_table *tbl, |
5128 | int max_slots, int ivalue) | |
fc931582 | 5129 | { |
fc931582 AA |
5130 | struct nfs4_slot *slot; |
5131 | int ret = -ENOMEM; | |
5132 | ||
5133 | BUG_ON(max_slots > NFS4_MAX_SLOT_TABLE); | |
5134 | ||
050047ce | 5135 | dprintk("--> %s: max_reqs=%u\n", __func__, max_slots); |
fc931582 | 5136 | |
8535b2be | 5137 | slot = kcalloc(max_slots, sizeof(struct nfs4_slot), GFP_NOFS); |
fc931582 AA |
5138 | if (!slot) |
5139 | goto out; | |
fc931582 AA |
5140 | ret = 0; |
5141 | ||
5142 | spin_lock(&tbl->slot_tbl_lock); | |
fc931582 AA |
5143 | tbl->max_slots = max_slots; |
5144 | tbl->slots = slot; | |
45d43c29 | 5145 | tbl->highest_used_slotid = NFS4_NO_SLOT; /* no slot is currently used */ |
fc931582 AA |
5146 | spin_unlock(&tbl->slot_tbl_lock); |
5147 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, | |
5148 | tbl, tbl->slots, tbl->max_slots); | |
5149 | out: | |
5150 | dprintk("<-- %s: return %d\n", __func__, ret); | |
5151 | return ret; | |
fc931582 AA |
5152 | } |
5153 | ||
050047ce | 5154 | /* |
aacd5537 | 5155 | * Initialize or reset the forechannel and backchannel tables |
050047ce | 5156 | */ |
aacd5537 | 5157 | static int nfs4_setup_session_slot_tables(struct nfs4_session *ses) |
050047ce | 5158 | { |
f26468fb | 5159 | struct nfs4_slot_table *tbl; |
aacd5537 | 5160 | int status; |
050047ce | 5161 | |
aacd5537 AA |
5162 | dprintk("--> %s\n", __func__); |
5163 | /* Fore channel */ | |
5164 | tbl = &ses->fc_slot_table; | |
f26468fb | 5165 | if (tbl->slots == NULL) { |
aacd5537 AA |
5166 | status = nfs4_init_slot_table(tbl, ses->fc_attrs.max_reqs, 1); |
5167 | if (status) /* -ENOMEM */ | |
5168 | return status; | |
5169 | } else { | |
5170 | status = nfs4_reset_slot_table(tbl, ses->fc_attrs.max_reqs, 1); | |
f26468fb TM |
5171 | if (status) |
5172 | return status; | |
5173 | } | |
aacd5537 AA |
5174 | /* Back channel */ |
5175 | tbl = &ses->bc_slot_table; | |
f26468fb | 5176 | if (tbl->slots == NULL) { |
aacd5537 | 5177 | status = nfs4_init_slot_table(tbl, ses->bc_attrs.max_reqs, 0); |
f26468fb | 5178 | if (status) |
aacd5537 AA |
5179 | /* Fore and back channel share a connection so get |
5180 | * both slot tables or neither */ | |
5181 | nfs4_destroy_slot_tables(ses); | |
5182 | } else | |
5183 | status = nfs4_reset_slot_table(tbl, ses->bc_attrs.max_reqs, 0); | |
f8625a6a | 5184 | return status; |
557134a3 AA |
5185 | } |
5186 | ||
5187 | struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) | |
5188 | { | |
5189 | struct nfs4_session *session; | |
5190 | struct nfs4_slot_table *tbl; | |
5191 | ||
8535b2be | 5192 | session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); |
557134a3 AA |
5193 | if (!session) |
5194 | return NULL; | |
76db6d95 | 5195 | |
557134a3 | 5196 | tbl = &session->fc_slot_table; |
45d43c29 | 5197 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
557134a3 | 5198 | spin_lock_init(&tbl->slot_tbl_lock); |
689cf5c1 | 5199 | rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table"); |
42acd021 | 5200 | init_completion(&tbl->complete); |
f8625a6a RL |
5201 | |
5202 | tbl = &session->bc_slot_table; | |
45d43c29 | 5203 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
f8625a6a RL |
5204 | spin_lock_init(&tbl->slot_tbl_lock); |
5205 | rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table"); | |
42acd021 | 5206 | init_completion(&tbl->complete); |
f8625a6a | 5207 | |
1055d76d TM |
5208 | session->session_state = 1<<NFS4_SESSION_INITING; |
5209 | ||
557134a3 AA |
5210 | session->clp = clp; |
5211 | return session; | |
5212 | } | |
5213 | ||
5214 | void nfs4_destroy_session(struct nfs4_session *session) | |
5215 | { | |
5a0ffe54 AA |
5216 | nfs4_proc_destroy_session(session); |
5217 | dprintk("%s Destroy backchannel for xprt %p\n", | |
5218 | __func__, session->clp->cl_rpcclient->cl_xprt); | |
5219 | xprt_destroy_backchannel(session->clp->cl_rpcclient->cl_xprt, | |
5220 | NFS41_BC_MIN_CALLBACKS); | |
f8625a6a | 5221 | nfs4_destroy_slot_tables(session); |
557134a3 AA |
5222 | kfree(session); |
5223 | } | |
5224 | ||
fc931582 AA |
5225 | /* |
5226 | * Initialize the values to be used by the client in CREATE_SESSION | |
5227 | * If nfs4_init_session set the fore channel request and response sizes, | |
5228 | * use them. | |
5229 | * | |
5230 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
5231 | * always set csa_cachethis to FALSE because the current implementation | |
5232 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
5233 | */ | |
5234 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
5235 | { | |
5236 | struct nfs4_session *session = args->client->cl_session; | |
5237 | unsigned int mxrqst_sz = session->fc_attrs.max_rqst_sz, | |
5238 | mxresp_sz = session->fc_attrs.max_resp_sz; | |
5239 | ||
5240 | if (mxrqst_sz == 0) | |
5241 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
5242 | if (mxresp_sz == 0) | |
5243 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
5244 | /* Fore channel attributes */ | |
fc931582 AA |
5245 | args->fc_attrs.max_rqst_sz = mxrqst_sz; |
5246 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 AA |
5247 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
5248 | args->fc_attrs.max_reqs = session->clp->cl_rpcclient->cl_xprt->max_reqs; | |
5249 | ||
5250 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 5251 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
5252 | __func__, |
5253 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 5254 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
5255 | |
5256 | /* Back channel attributes */ | |
fc931582 AA |
5257 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
5258 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
5259 | args->bc_attrs.max_resp_sz_cached = 0; | |
5260 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
5261 | args->bc_attrs.max_reqs = 1; | |
5262 | ||
5263 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
5264 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
5265 | __func__, | |
5266 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
5267 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
5268 | args->bc_attrs.max_reqs); | |
5269 | } | |
5270 | ||
43c2e885 | 5271 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 5272 | { |
43c2e885 BF |
5273 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
5274 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
5275 | ||
43c2e885 BF |
5276 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
5277 | return -EINVAL; | |
5278 | /* | |
5279 | * Our requested max_ops is the minimum we need; we're not | |
5280 | * prepared to break up compounds into smaller pieces than that. | |
5281 | * So, no point even trying to continue if the server won't | |
5282 | * cooperate: | |
5283 | */ | |
5284 | if (rcvd->max_ops < sent->max_ops) | |
5285 | return -EINVAL; | |
5286 | if (rcvd->max_reqs == 0) | |
5287 | return -EINVAL; | |
5288 | return 0; | |
8d35301d AA |
5289 | } |
5290 | ||
43c2e885 BF |
5291 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
5292 | { | |
5293 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
5294 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 5295 | |
43c2e885 BF |
5296 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
5297 | return -EINVAL; | |
5298 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
5299 | return -EINVAL; | |
5300 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
5301 | return -EINVAL; | |
5302 | /* These would render the backchannel useless: */ | |
5303 | if (rcvd->max_ops == 0) | |
5304 | return -EINVAL; | |
5305 | if (rcvd->max_reqs == 0) | |
5306 | return -EINVAL; | |
5307 | return 0; | |
5308 | } | |
8d35301d | 5309 | |
8d35301d AA |
5310 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
5311 | struct nfs4_session *session) | |
5312 | { | |
43c2e885 | 5313 | int ret; |
8d35301d | 5314 | |
43c2e885 BF |
5315 | ret = nfs4_verify_fore_channel_attrs(args, session); |
5316 | if (ret) | |
5317 | return ret; | |
5318 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
5319 | } |
5320 | ||
fc931582 AA |
5321 | static int _nfs4_proc_create_session(struct nfs_client *clp) |
5322 | { | |
5323 | struct nfs4_session *session = clp->cl_session; | |
5324 | struct nfs41_create_session_args args = { | |
5325 | .client = clp, | |
5326 | .cb_program = NFS4_CALLBACK, | |
5327 | }; | |
5328 | struct nfs41_create_session_res res = { | |
5329 | .client = clp, | |
5330 | }; | |
5331 | struct rpc_message msg = { | |
5332 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
5333 | .rpc_argp = &args, | |
5334 | .rpc_resp = &res, | |
5335 | }; | |
5336 | int status; | |
5337 | ||
5338 | nfs4_init_channel_attrs(&args); | |
0f91421e | 5339 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 5340 | |
1bd714f2 | 5341 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
fc931582 | 5342 | |
8d35301d AA |
5343 | if (!status) |
5344 | /* Verify the session's negotiated channel_attrs values */ | |
5345 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
5346 | if (!status) { |
5347 | /* Increment the clientid slot sequence id */ | |
5348 | clp->cl_seqid++; | |
5349 | } | |
5350 | ||
5351 | return status; | |
5352 | } | |
5353 | ||
5354 | /* | |
5355 | * Issues a CREATE_SESSION operation to the server. | |
5356 | * It is the responsibility of the caller to verify the session is | |
5357 | * expired before calling this routine. | |
5358 | */ | |
f26468fb | 5359 | int nfs4_proc_create_session(struct nfs_client *clp) |
fc931582 AA |
5360 | { |
5361 | int status; | |
5362 | unsigned *ptr; | |
fc931582 AA |
5363 | struct nfs4_session *session = clp->cl_session; |
5364 | ||
5365 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
5366 | ||
fd954ae1 | 5367 | status = _nfs4_proc_create_session(clp); |
fc931582 AA |
5368 | if (status) |
5369 | goto out; | |
5370 | ||
aacd5537 AA |
5371 | /* Init or reset the session slot tables */ |
5372 | status = nfs4_setup_session_slot_tables(session); | |
5373 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
5374 | if (status) |
5375 | goto out; | |
5376 | ||
5377 | ptr = (unsigned *)&session->sess_id.data[0]; | |
5378 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
5379 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
5380 | out: |
5381 | dprintk("<-- %s\n", __func__); | |
5382 | return status; | |
5383 | } | |
5384 | ||
0f3e66c6 AA |
5385 | /* |
5386 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
5387 | * The caller must serialize access to this routine. | |
5388 | */ | |
5389 | int nfs4_proc_destroy_session(struct nfs4_session *session) | |
5390 | { | |
5391 | int status = 0; | |
5392 | struct rpc_message msg; | |
5393 | ||
5394 | dprintk("--> nfs4_proc_destroy_session\n"); | |
5395 | ||
5396 | /* session is still being setup */ | |
5397 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
5398 | return status; | |
5399 | ||
5400 | msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION]; | |
5401 | msg.rpc_argp = session; | |
5402 | msg.rpc_resp = NULL; | |
5403 | msg.rpc_cred = NULL; | |
1bd714f2 | 5404 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
0f3e66c6 AA |
5405 | |
5406 | if (status) | |
5407 | printk(KERN_WARNING | |
f9fd2d9c | 5408 | "NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
5409 | "Session has been destroyed regardless...\n", status); |
5410 | ||
5411 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
5412 | return status; | |
5413 | } | |
5414 | ||
fccba804 TM |
5415 | int nfs4_init_session(struct nfs_server *server) |
5416 | { | |
5417 | struct nfs_client *clp = server->nfs_client; | |
2449ea2e | 5418 | struct nfs4_session *session; |
68bf05ef | 5419 | unsigned int rsize, wsize; |
fccba804 TM |
5420 | int ret; |
5421 | ||
5422 | if (!nfs4_has_session(clp)) | |
5423 | return 0; | |
5424 | ||
1055d76d TM |
5425 | session = clp->cl_session; |
5426 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5427 | return 0; | |
5428 | ||
68bf05ef AA |
5429 | rsize = server->rsize; |
5430 | if (rsize == 0) | |
5431 | rsize = NFS_MAX_FILE_IO_SIZE; | |
5432 | wsize = server->wsize; | |
5433 | if (wsize == 0) | |
5434 | wsize = NFS_MAX_FILE_IO_SIZE; | |
5435 | ||
68bf05ef AA |
5436 | session->fc_attrs.max_rqst_sz = wsize + nfs41_maxwrite_overhead; |
5437 | session->fc_attrs.max_resp_sz = rsize + nfs41_maxread_overhead; | |
2449ea2e | 5438 | |
fccba804 TM |
5439 | ret = nfs4_recover_expired_lease(server); |
5440 | if (!ret) | |
5441 | ret = nfs4_check_client_ready(clp); | |
5442 | return ret; | |
5443 | } | |
5444 | ||
d83217c1 AA |
5445 | int nfs4_init_ds_session(struct nfs_client *clp) |
5446 | { | |
5447 | struct nfs4_session *session = clp->cl_session; | |
5448 | int ret; | |
5449 | ||
5450 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5451 | return 0; | |
5452 | ||
5453 | ret = nfs4_client_recover_expired_lease(clp); | |
5454 | if (!ret) | |
5455 | /* Test for the DS role */ | |
5456 | if (!is_ds_client(clp)) | |
5457 | ret = -ENODEV; | |
5458 | if (!ret) | |
5459 | ret = nfs4_check_client_ready(clp); | |
5460 | return ret; | |
5461 | ||
5462 | } | |
5463 | EXPORT_SYMBOL_GPL(nfs4_init_ds_session); | |
5464 | ||
5465 | ||
fc01cea9 AA |
5466 | /* |
5467 | * Renew the cl_session lease. | |
5468 | */ | |
d5f8d3fe TM |
5469 | struct nfs4_sequence_data { |
5470 | struct nfs_client *clp; | |
5471 | struct nfs4_sequence_args args; | |
5472 | struct nfs4_sequence_res res; | |
5473 | }; | |
5474 | ||
dc96aef9 AB |
5475 | static void nfs41_sequence_release(void *data) |
5476 | { | |
d5f8d3fe TM |
5477 | struct nfs4_sequence_data *calldata = data; |
5478 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 5479 | |
7135840f AB |
5480 | if (atomic_read(&clp->cl_count) > 1) |
5481 | nfs4_schedule_state_renewal(clp); | |
5482 | nfs_put_client(clp); | |
d5f8d3fe | 5483 | kfree(calldata); |
dc96aef9 AB |
5484 | } |
5485 | ||
aa5190d0 TM |
5486 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5487 | { | |
5488 | switch(task->tk_status) { | |
5489 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5490 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5491 | return -EAGAIN; | |
5492 | default: | |
0400a6b0 | 5493 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5494 | } |
5495 | return 0; | |
5496 | } | |
5497 | ||
dc96aef9 | 5498 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 5499 | { |
d5f8d3fe TM |
5500 | struct nfs4_sequence_data *calldata = data; |
5501 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 5502 | |
14516c3a TM |
5503 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
5504 | return; | |
fc01cea9 AA |
5505 | |
5506 | if (task->tk_status < 0) { | |
5507 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
5508 | if (atomic_read(&clp->cl_count) == 1) |
5509 | goto out; | |
fc01cea9 | 5510 | |
aa5190d0 TM |
5511 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
5512 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
5513 | return; |
5514 | } | |
5515 | } | |
fc01cea9 | 5516 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 5517 | out: |
fc01cea9 AA |
5518 | dprintk("<-- %s\n", __func__); |
5519 | } | |
5520 | ||
5521 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
5522 | { | |
d5f8d3fe TM |
5523 | struct nfs4_sequence_data *calldata = data; |
5524 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
5525 | struct nfs4_sequence_args *args; |
5526 | struct nfs4_sequence_res *res; | |
5527 | ||
fc01cea9 AA |
5528 | args = task->tk_msg.rpc_argp; |
5529 | res = task->tk_msg.rpc_resp; | |
5530 | ||
9d12b216 | 5531 | if (nfs41_setup_sequence(clp->cl_session, args, res, task)) |
fc01cea9 AA |
5532 | return; |
5533 | rpc_call_start(task); | |
5534 | } | |
5535 | ||
5536 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
5537 | .rpc_call_done = nfs41_sequence_call_done, | |
5538 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 5539 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
5540 | }; |
5541 | ||
71ac6da9 | 5542 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) |
fc01cea9 | 5543 | { |
d5f8d3fe | 5544 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
5545 | struct rpc_message msg = { |
5546 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
5547 | .rpc_cred = cred, | |
5548 | }; | |
71ac6da9 TM |
5549 | struct rpc_task_setup task_setup_data = { |
5550 | .rpc_client = clp->cl_rpcclient, | |
5551 | .rpc_message = &msg, | |
5552 | .callback_ops = &nfs41_sequence_ops, | |
5553 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT, | |
5554 | }; | |
fc01cea9 | 5555 | |
7135840f | 5556 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 5557 | return ERR_PTR(-EIO); |
dfb4f309 | 5558 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 5559 | if (calldata == NULL) { |
7135840f | 5560 | nfs_put_client(clp); |
71ac6da9 | 5561 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 5562 | } |
9d12b216 | 5563 | nfs41_init_sequence(&calldata->args, &calldata->res, 0); |
d5f8d3fe TM |
5564 | msg.rpc_argp = &calldata->args; |
5565 | msg.rpc_resp = &calldata->res; | |
5566 | calldata->clp = clp; | |
71ac6da9 | 5567 | task_setup_data.callback_data = calldata; |
fc01cea9 | 5568 | |
71ac6da9 TM |
5569 | return rpc_run_task(&task_setup_data); |
5570 | } | |
5571 | ||
2f60ea6b | 5572 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
5573 | { |
5574 | struct rpc_task *task; | |
5575 | int ret = 0; | |
5576 | ||
2f60ea6b TM |
5577 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
5578 | return 0; | |
71ac6da9 TM |
5579 | task = _nfs41_proc_sequence(clp, cred); |
5580 | if (IS_ERR(task)) | |
5581 | ret = PTR_ERR(task); | |
5582 | else | |
bf294b41 | 5583 | rpc_put_task_async(task); |
71ac6da9 TM |
5584 | dprintk("<-- %s status=%d\n", __func__, ret); |
5585 | return ret; | |
5586 | } | |
5587 | ||
5588 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5589 | { | |
5590 | struct rpc_task *task; | |
5591 | int ret; | |
5592 | ||
5593 | task = _nfs41_proc_sequence(clp, cred); | |
5594 | if (IS_ERR(task)) { | |
5595 | ret = PTR_ERR(task); | |
5596 | goto out; | |
5597 | } | |
5598 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
5599 | if (!ret) { |
5600 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
5601 | ||
5602 | if (task->tk_status == 0) | |
5603 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 5604 | ret = task->tk_status; |
b4410c2f | 5605 | } |
71ac6da9 TM |
5606 | rpc_put_task(task); |
5607 | out: | |
5608 | dprintk("<-- %s status=%d\n", __func__, ret); | |
5609 | return ret; | |
fc01cea9 AA |
5610 | } |
5611 | ||
fce5c838 RL |
5612 | struct nfs4_reclaim_complete_data { |
5613 | struct nfs_client *clp; | |
5614 | struct nfs41_reclaim_complete_args arg; | |
5615 | struct nfs41_reclaim_complete_res res; | |
5616 | }; | |
5617 | ||
5618 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
5619 | { | |
5620 | struct nfs4_reclaim_complete_data *calldata = data; | |
5621 | ||
b257957e | 5622 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
035168ab TM |
5623 | if (nfs41_setup_sequence(calldata->clp->cl_session, |
5624 | &calldata->arg.seq_args, | |
9d12b216 | 5625 | &calldata->res.seq_res, task)) |
fce5c838 RL |
5626 | return; |
5627 | ||
5628 | rpc_call_start(task); | |
5629 | } | |
5630 | ||
aa5190d0 TM |
5631 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5632 | { | |
5633 | switch(task->tk_status) { | |
5634 | case 0: | |
5635 | case -NFS4ERR_COMPLETE_ALREADY: | |
5636 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
5637 | break; | |
5638 | case -NFS4ERR_DELAY: | |
aa5190d0 | 5639 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
5640 | /* fall through */ |
5641 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
5642 | return -EAGAIN; |
5643 | default: | |
0400a6b0 | 5644 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5645 | } |
5646 | return 0; | |
5647 | } | |
5648 | ||
fce5c838 RL |
5649 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
5650 | { | |
5651 | struct nfs4_reclaim_complete_data *calldata = data; | |
5652 | struct nfs_client *clp = calldata->clp; | |
5653 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
5654 | ||
5655 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5656 | if (!nfs41_sequence_done(task, res)) |
5657 | return; | |
fce5c838 | 5658 | |
aa5190d0 TM |
5659 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
5660 | rpc_restart_call_prepare(task); | |
5661 | return; | |
5662 | } | |
fce5c838 RL |
5663 | dprintk("<-- %s\n", __func__); |
5664 | } | |
5665 | ||
5666 | static void nfs4_free_reclaim_complete_data(void *data) | |
5667 | { | |
5668 | struct nfs4_reclaim_complete_data *calldata = data; | |
5669 | ||
5670 | kfree(calldata); | |
5671 | } | |
5672 | ||
5673 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
5674 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
5675 | .rpc_call_done = nfs4_reclaim_complete_done, | |
5676 | .rpc_release = nfs4_free_reclaim_complete_data, | |
5677 | }; | |
5678 | ||
5679 | /* | |
5680 | * Issue a global reclaim complete. | |
5681 | */ | |
5682 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
5683 | { | |
5684 | struct nfs4_reclaim_complete_data *calldata; | |
5685 | struct rpc_task *task; | |
5686 | struct rpc_message msg = { | |
5687 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
5688 | }; | |
5689 | struct rpc_task_setup task_setup_data = { | |
5690 | .rpc_client = clp->cl_rpcclient, | |
5691 | .rpc_message = &msg, | |
5692 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
5693 | .flags = RPC_TASK_ASYNC, | |
5694 | }; | |
5695 | int status = -ENOMEM; | |
5696 | ||
5697 | dprintk("--> %s\n", __func__); | |
8535b2be | 5698 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
5699 | if (calldata == NULL) |
5700 | goto out; | |
5701 | calldata->clp = clp; | |
5702 | calldata->arg.one_fs = 0; | |
fce5c838 | 5703 | |
9d12b216 | 5704 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
fce5c838 RL |
5705 | msg.rpc_argp = &calldata->arg; |
5706 | msg.rpc_resp = &calldata->res; | |
5707 | task_setup_data.callback_data = calldata; | |
5708 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 5709 | if (IS_ERR(task)) { |
fce5c838 | 5710 | status = PTR_ERR(task); |
acf82b85 DC |
5711 | goto out; |
5712 | } | |
c34c32ea AA |
5713 | status = nfs4_wait_for_completion_rpc_task(task); |
5714 | if (status == 0) | |
5715 | status = task->tk_status; | |
fce5c838 | 5716 | rpc_put_task(task); |
acf82b85 | 5717 | return 0; |
fce5c838 RL |
5718 | out: |
5719 | dprintk("<-- %s status=%d\n", __func__, status); | |
5720 | return status; | |
5721 | } | |
b1f69b75 AA |
5722 | |
5723 | static void | |
5724 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
5725 | { | |
5726 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 5727 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
b1f69b75 AA |
5728 | |
5729 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
5730 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
5731 | * right now covering the LAYOUTGET we are about to send. | |
5732 | * However, that is not so catastrophic, and there seems | |
5733 | * to be no way to prevent it completely. | |
5734 | */ | |
b1f69b75 | 5735 | if (nfs4_setup_sequence(server, &lgp->args.seq_args, |
9d12b216 | 5736 | &lgp->res.seq_res, task)) |
b1f69b75 | 5737 | return; |
cf7d63f1 FI |
5738 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
5739 | NFS_I(lgp->args.inode)->layout, | |
5740 | lgp->args.ctx->state)) { | |
5741 | rpc_exit(task, NFS4_OK); | |
5742 | return; | |
5743 | } | |
b1f69b75 AA |
5744 | rpc_call_start(task); |
5745 | } | |
5746 | ||
5747 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
5748 | { | |
5749 | struct nfs4_layoutget *lgp = calldata; | |
5750 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5751 | ||
5752 | dprintk("--> %s\n", __func__); | |
5753 | ||
5754 | if (!nfs4_sequence_done(task, &lgp->res.seq_res)) | |
5755 | return; | |
5756 | ||
5757 | switch (task->tk_status) { | |
5758 | case 0: | |
5759 | break; | |
5760 | case -NFS4ERR_LAYOUTTRYLATER: | |
5761 | case -NFS4ERR_RECALLCONFLICT: | |
5762 | task->tk_status = -NFS4ERR_DELAY; | |
5763 | /* Fall through */ | |
5764 | default: | |
5765 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
5766 | rpc_restart_call_prepare(task); | |
5767 | return; | |
5768 | } | |
5769 | } | |
b1f69b75 AA |
5770 | dprintk("<-- %s\n", __func__); |
5771 | } | |
5772 | ||
5773 | static void nfs4_layoutget_release(void *calldata) | |
5774 | { | |
5775 | struct nfs4_layoutget *lgp = calldata; | |
5776 | ||
5777 | dprintk("--> %s\n", __func__); | |
b1f69b75 AA |
5778 | put_nfs_open_context(lgp->args.ctx); |
5779 | kfree(calldata); | |
5780 | dprintk("<-- %s\n", __func__); | |
5781 | } | |
5782 | ||
5783 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
5784 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
5785 | .rpc_call_done = nfs4_layoutget_done, | |
5786 | .rpc_release = nfs4_layoutget_release, | |
5787 | }; | |
5788 | ||
5789 | int nfs4_proc_layoutget(struct nfs4_layoutget *lgp) | |
5790 | { | |
5791 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5792 | struct rpc_task *task; | |
5793 | struct rpc_message msg = { | |
5794 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
5795 | .rpc_argp = &lgp->args, | |
5796 | .rpc_resp = &lgp->res, | |
5797 | }; | |
5798 | struct rpc_task_setup task_setup_data = { | |
5799 | .rpc_client = server->client, | |
5800 | .rpc_message = &msg, | |
5801 | .callback_ops = &nfs4_layoutget_call_ops, | |
5802 | .callback_data = lgp, | |
5803 | .flags = RPC_TASK_ASYNC, | |
5804 | }; | |
5805 | int status = 0; | |
5806 | ||
5807 | dprintk("--> %s\n", __func__); | |
5808 | ||
35124a09 | 5809 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 5810 | lgp->res.seq_res.sr_slot = NULL; |
9d12b216 | 5811 | nfs41_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
b1f69b75 AA |
5812 | task = rpc_run_task(&task_setup_data); |
5813 | if (IS_ERR(task)) | |
5814 | return PTR_ERR(task); | |
5815 | status = nfs4_wait_for_completion_rpc_task(task); | |
c31663d4 FI |
5816 | if (status == 0) |
5817 | status = task->tk_status; | |
5818 | if (status == 0) | |
5819 | status = pnfs_layout_process(lgp); | |
b1f69b75 AA |
5820 | rpc_put_task(task); |
5821 | dprintk("<-- %s status=%d\n", __func__, status); | |
5822 | return status; | |
5823 | } | |
5824 | ||
cbe82603 BH |
5825 | static void |
5826 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
5827 | { | |
5828 | struct nfs4_layoutreturn *lrp = calldata; | |
5829 | ||
5830 | dprintk("--> %s\n", __func__); | |
5831 | if (nfs41_setup_sequence(lrp->clp->cl_session, &lrp->args.seq_args, | |
9d12b216 | 5832 | &lrp->res.seq_res, task)) |
cbe82603 BH |
5833 | return; |
5834 | rpc_call_start(task); | |
5835 | } | |
5836 | ||
5837 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
5838 | { | |
5839 | struct nfs4_layoutreturn *lrp = calldata; | |
5840 | struct nfs_server *server; | |
a56aaa02 | 5841 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
5842 | |
5843 | dprintk("--> %s\n", __func__); | |
5844 | ||
5845 | if (!nfs4_sequence_done(task, &lrp->res.seq_res)) | |
5846 | return; | |
5847 | ||
5848 | server = NFS_SERVER(lrp->args.inode); | |
5849 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 5850 | rpc_restart_call_prepare(task); |
cbe82603 BH |
5851 | return; |
5852 | } | |
a2e1d4f2 | 5853 | spin_lock(&lo->plh_inode->i_lock); |
cbe82603 | 5854 | if (task->tk_status == 0) { |
cbe82603 | 5855 | if (lrp->res.lrs_present) { |
cbe82603 | 5856 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); |
cbe82603 BH |
5857 | } else |
5858 | BUG_ON(!list_empty(&lo->plh_segs)); | |
5859 | } | |
a2e1d4f2 FI |
5860 | lo->plh_block_lgets--; |
5861 | spin_unlock(&lo->plh_inode->i_lock); | |
cbe82603 BH |
5862 | dprintk("<-- %s\n", __func__); |
5863 | } | |
5864 | ||
5865 | static void nfs4_layoutreturn_release(void *calldata) | |
5866 | { | |
5867 | struct nfs4_layoutreturn *lrp = calldata; | |
5868 | ||
5869 | dprintk("--> %s\n", __func__); | |
a56aaa02 | 5870 | put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
5871 | kfree(calldata); |
5872 | dprintk("<-- %s\n", __func__); | |
5873 | } | |
5874 | ||
5875 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
5876 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
5877 | .rpc_call_done = nfs4_layoutreturn_done, | |
5878 | .rpc_release = nfs4_layoutreturn_release, | |
5879 | }; | |
5880 | ||
5881 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
5882 | { | |
5883 | struct rpc_task *task; | |
5884 | struct rpc_message msg = { | |
5885 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
5886 | .rpc_argp = &lrp->args, | |
5887 | .rpc_resp = &lrp->res, | |
5888 | }; | |
5889 | struct rpc_task_setup task_setup_data = { | |
5890 | .rpc_client = lrp->clp->cl_rpcclient, | |
5891 | .rpc_message = &msg, | |
5892 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
5893 | .callback_data = lrp, | |
5894 | }; | |
5895 | int status; | |
5896 | ||
5897 | dprintk("--> %s\n", __func__); | |
9d12b216 | 5898 | nfs41_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
5899 | task = rpc_run_task(&task_setup_data); |
5900 | if (IS_ERR(task)) | |
5901 | return PTR_ERR(task); | |
5902 | status = task->tk_status; | |
5903 | dprintk("<-- %s status=%d\n", __func__, status); | |
5904 | rpc_put_task(task); | |
5905 | return status; | |
5906 | } | |
5907 | ||
7f11d8d3 AA |
5908 | /* |
5909 | * Retrieve the list of Data Server devices from the MDS. | |
5910 | */ | |
5911 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
5912 | const struct nfs_fh *fh, | |
5913 | struct pnfs_devicelist *devlist) | |
5914 | { | |
5915 | struct nfs4_getdevicelist_args args = { | |
5916 | .fh = fh, | |
5917 | .layoutclass = server->pnfs_curr_ld->id, | |
5918 | }; | |
5919 | struct nfs4_getdevicelist_res res = { | |
5920 | .devlist = devlist, | |
5921 | }; | |
5922 | struct rpc_message msg = { | |
5923 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
5924 | .rpc_argp = &args, | |
5925 | .rpc_resp = &res, | |
5926 | }; | |
5927 | int status; | |
5928 | ||
5929 | dprintk("--> %s\n", __func__); | |
5930 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
5931 | &res.seq_res, 0); | |
5932 | dprintk("<-- %s status=%d\n", __func__, status); | |
5933 | return status; | |
5934 | } | |
5935 | ||
5936 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
5937 | const struct nfs_fh *fh, | |
5938 | struct pnfs_devicelist *devlist) | |
5939 | { | |
5940 | struct nfs4_exception exception = { }; | |
5941 | int err; | |
5942 | ||
5943 | do { | |
5944 | err = nfs4_handle_exception(server, | |
5945 | _nfs4_getdevicelist(server, fh, devlist), | |
5946 | &exception); | |
5947 | } while (exception.retry); | |
5948 | ||
5949 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
5950 | err, devlist->num_devs); | |
5951 | ||
5952 | return err; | |
5953 | } | |
5954 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
5955 | ||
b1f69b75 AA |
5956 | static int |
5957 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
5958 | { | |
5959 | struct nfs4_getdeviceinfo_args args = { | |
5960 | .pdev = pdev, | |
5961 | }; | |
5962 | struct nfs4_getdeviceinfo_res res = { | |
5963 | .pdev = pdev, | |
5964 | }; | |
5965 | struct rpc_message msg = { | |
5966 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
5967 | .rpc_argp = &args, | |
5968 | .rpc_resp = &res, | |
5969 | }; | |
5970 | int status; | |
5971 | ||
5972 | dprintk("--> %s\n", __func__); | |
7c513058 | 5973 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
5974 | dprintk("<-- %s status=%d\n", __func__, status); |
5975 | ||
5976 | return status; | |
5977 | } | |
5978 | ||
5979 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
5980 | { | |
5981 | struct nfs4_exception exception = { }; | |
5982 | int err; | |
5983 | ||
5984 | do { | |
5985 | err = nfs4_handle_exception(server, | |
5986 | _nfs4_proc_getdeviceinfo(server, pdev), | |
5987 | &exception); | |
5988 | } while (exception.retry); | |
5989 | return err; | |
5990 | } | |
5991 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
5992 | ||
863a3c6c AA |
5993 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
5994 | { | |
5995 | struct nfs4_layoutcommit_data *data = calldata; | |
5996 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
5997 | ||
5998 | if (nfs4_setup_sequence(server, &data->args.seq_args, | |
9d12b216 | 5999 | &data->res.seq_res, task)) |
863a3c6c AA |
6000 | return; |
6001 | rpc_call_start(task); | |
6002 | } | |
6003 | ||
6004 | static void | |
6005 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
6006 | { | |
6007 | struct nfs4_layoutcommit_data *data = calldata; | |
6008 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6009 | ||
6010 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
6011 | return; | |
6012 | ||
6013 | switch (task->tk_status) { /* Just ignore these failures */ | |
6014 | case NFS4ERR_DELEG_REVOKED: /* layout was recalled */ | |
6015 | case NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
6016 | case NFS4ERR_BADLAYOUT: /* no layout */ | |
6017 | case NFS4ERR_GRACE: /* loca_recalim always false */ | |
6018 | task->tk_status = 0; | |
6019 | } | |
6020 | ||
6021 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 6022 | rpc_restart_call_prepare(task); |
863a3c6c AA |
6023 | return; |
6024 | } | |
6025 | ||
6026 | if (task->tk_status == 0) | |
6027 | nfs_post_op_update_inode_force_wcc(data->args.inode, | |
6028 | data->res.fattr); | |
6029 | } | |
6030 | ||
6031 | static void nfs4_layoutcommit_release(void *calldata) | |
6032 | { | |
6033 | struct nfs4_layoutcommit_data *data = calldata; | |
a9bae566 | 6034 | struct pnfs_layout_segment *lseg, *tmp; |
92407e75 | 6035 | unsigned long *bitlock = &NFS_I(data->args.inode)->flags; |
863a3c6c | 6036 | |
db29c089 | 6037 | pnfs_cleanup_layoutcommit(data); |
863a3c6c | 6038 | /* Matched by references in pnfs_set_layoutcommit */ |
a9bae566 PT |
6039 | list_for_each_entry_safe(lseg, tmp, &data->lseg_list, pls_lc_list) { |
6040 | list_del_init(&lseg->pls_lc_list); | |
6041 | if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT, | |
6042 | &lseg->pls_flags)) | |
6043 | put_lseg(lseg); | |
6044 | } | |
92407e75 PT |
6045 | |
6046 | clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING, bitlock); | |
6047 | smp_mb__after_clear_bit(); | |
6048 | wake_up_bit(bitlock, NFS_INO_LAYOUTCOMMITTING); | |
6049 | ||
863a3c6c AA |
6050 | put_rpccred(data->cred); |
6051 | kfree(data); | |
6052 | } | |
6053 | ||
6054 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
6055 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
6056 | .rpc_call_done = nfs4_layoutcommit_done, | |
6057 | .rpc_release = nfs4_layoutcommit_release, | |
6058 | }; | |
6059 | ||
6060 | int | |
ef311537 | 6061 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
6062 | { |
6063 | struct rpc_message msg = { | |
6064 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
6065 | .rpc_argp = &data->args, | |
6066 | .rpc_resp = &data->res, | |
6067 | .rpc_cred = data->cred, | |
6068 | }; | |
6069 | struct rpc_task_setup task_setup_data = { | |
6070 | .task = &data->task, | |
6071 | .rpc_client = NFS_CLIENT(data->args.inode), | |
6072 | .rpc_message = &msg, | |
6073 | .callback_ops = &nfs4_layoutcommit_ops, | |
6074 | .callback_data = data, | |
6075 | .flags = RPC_TASK_ASYNC, | |
6076 | }; | |
6077 | struct rpc_task *task; | |
6078 | int status = 0; | |
6079 | ||
6080 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
6081 | "lbw: %llu inode %lu\n", | |
6082 | data->task.tk_pid, sync, | |
6083 | data->args.lastbytewritten, | |
6084 | data->args.inode->i_ino); | |
6085 | ||
9d12b216 | 6086 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
6087 | task = rpc_run_task(&task_setup_data); |
6088 | if (IS_ERR(task)) | |
6089 | return PTR_ERR(task); | |
ef311537 | 6090 | if (sync == false) |
863a3c6c AA |
6091 | goto out; |
6092 | status = nfs4_wait_for_completion_rpc_task(task); | |
6093 | if (status != 0) | |
6094 | goto out; | |
6095 | status = task->tk_status; | |
6096 | out: | |
6097 | dprintk("%s: status %d\n", __func__, status); | |
6098 | rpc_put_task(task); | |
6099 | return status; | |
6100 | } | |
fca78d6d BS |
6101 | |
6102 | static int | |
6103 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6104 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6105 | { | |
6106 | struct nfs41_secinfo_no_name_args args = { | |
6107 | .style = SECINFO_STYLE_CURRENT_FH, | |
6108 | }; | |
6109 | struct nfs4_secinfo_res res = { | |
6110 | .flavors = flavors, | |
6111 | }; | |
6112 | struct rpc_message msg = { | |
6113 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
6114 | .rpc_argp = &args, | |
6115 | .rpc_resp = &res, | |
6116 | }; | |
6117 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); | |
6118 | } | |
6119 | ||
6120 | static int | |
6121 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6122 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6123 | { | |
6124 | struct nfs4_exception exception = { }; | |
6125 | int err; | |
6126 | do { | |
6127 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6128 | switch (err) { | |
6129 | case 0: | |
6130 | case -NFS4ERR_WRONGSEC: | |
6131 | case -NFS4ERR_NOTSUPP: | |
6132 | break; | |
6133 | default: | |
6134 | err = nfs4_handle_exception(server, err, &exception); | |
6135 | } | |
6136 | } while (exception.retry); | |
6137 | return err; | |
6138 | } | |
6139 | ||
6140 | static int | |
6141 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
6142 | struct nfs_fsinfo *info) | |
6143 | { | |
6144 | int err; | |
6145 | struct page *page; | |
6146 | rpc_authflavor_t flavor; | |
6147 | struct nfs4_secinfo_flavors *flavors; | |
6148 | ||
6149 | page = alloc_page(GFP_KERNEL); | |
6150 | if (!page) { | |
6151 | err = -ENOMEM; | |
6152 | goto out; | |
6153 | } | |
6154 | ||
6155 | flavors = page_address(page); | |
6156 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6157 | ||
6158 | /* | |
6159 | * Fall back on "guess and check" method if | |
6160 | * the server doesn't support SECINFO_NO_NAME | |
6161 | */ | |
6162 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
6163 | err = nfs4_find_root_sec(server, fhandle, info); | |
6164 | goto out_freepage; | |
6165 | } | |
6166 | if (err) | |
6167 | goto out_freepage; | |
6168 | ||
6169 | flavor = nfs_find_best_sec(flavors); | |
6170 | if (err == 0) | |
6171 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
6172 | ||
6173 | out_freepage: | |
6174 | put_page(page); | |
6175 | if (err == -EACCES) | |
6176 | return -EPERM; | |
6177 | out: | |
6178 | return err; | |
6179 | } | |
1cab0652 BS |
6180 | |
6181 | static int _nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) | |
7d974794 | 6182 | { |
1cab0652 | 6183 | int status; |
7d974794 | 6184 | struct nfs41_test_stateid_args args = { |
1cab0652 | 6185 | .stateid = stateid, |
7d974794 BS |
6186 | }; |
6187 | struct nfs41_test_stateid_res res; | |
6188 | struct rpc_message msg = { | |
6189 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
6190 | .rpc_argp = &args, | |
6191 | .rpc_resp = &res, | |
6192 | }; | |
1cab0652 | 6193 | |
9d12b216 | 6194 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
1cab0652 BS |
6195 | status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
6196 | ||
6197 | if (status == NFS_OK) | |
6198 | return res.status; | |
6199 | return status; | |
7d974794 BS |
6200 | } |
6201 | ||
1cab0652 | 6202 | static int nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
7d974794 BS |
6203 | { |
6204 | struct nfs4_exception exception = { }; | |
6205 | int err; | |
6206 | do { | |
6207 | err = nfs4_handle_exception(server, | |
1cab0652 | 6208 | _nfs41_test_stateid(server, stateid), |
7d974794 BS |
6209 | &exception); |
6210 | } while (exception.retry); | |
6211 | return err; | |
6212 | } | |
9aeda35f | 6213 | |
1cab0652 | 6214 | static int _nfs4_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f | 6215 | { |
9aeda35f | 6216 | struct nfs41_free_stateid_args args = { |
1cab0652 | 6217 | .stateid = stateid, |
9aeda35f BS |
6218 | }; |
6219 | struct nfs41_free_stateid_res res; | |
6220 | struct rpc_message msg = { | |
6221 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
6222 | .rpc_argp = &args, | |
6223 | .rpc_resp = &res, | |
6224 | }; | |
6225 | ||
9d12b216 TM |
6226 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
6227 | return nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); | |
9aeda35f BS |
6228 | } |
6229 | ||
1cab0652 | 6230 | static int nfs41_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f BS |
6231 | { |
6232 | struct nfs4_exception exception = { }; | |
6233 | int err; | |
6234 | do { | |
6235 | err = nfs4_handle_exception(server, | |
1cab0652 | 6236 | _nfs4_free_stateid(server, stateid), |
9aeda35f BS |
6237 | &exception); |
6238 | } while (exception.retry); | |
6239 | return err; | |
6240 | } | |
557134a3 AA |
6241 | #endif /* CONFIG_NFS_V4_1 */ |
6242 | ||
591d71cb | 6243 | struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 6244 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 6245 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
6246 | .recover_open = nfs4_open_reclaim, |
6247 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 6248 | .establish_clid = nfs4_init_clientid, |
90a16617 | 6249 | .get_clid_cred = nfs4_get_setclientid_cred, |
1da177e4 LT |
6250 | }; |
6251 | ||
591d71cb AA |
6252 | #if defined(CONFIG_NFS_V4_1) |
6253 | struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { | |
6254 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, | |
6255 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
6256 | .recover_open = nfs4_open_reclaim, | |
6257 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 6258 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6259 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 6260 | .reclaim_complete = nfs41_proc_reclaim_complete, |
591d71cb AA |
6261 | }; |
6262 | #endif /* CONFIG_NFS_V4_1 */ | |
6263 | ||
6264 | struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { | |
6265 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, | |
6266 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
6267 | .recover_open = nfs4_open_expired, | |
6268 | .recover_lock = nfs4_lock_expired, | |
6269 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 6270 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
6271 | }; |
6272 | ||
6273 | #if defined(CONFIG_NFS_V4_1) | |
6274 | struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { | |
7eff03ae | 6275 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 6276 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
6277 | .recover_open = nfs41_open_expired, |
6278 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 6279 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6280 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 6281 | }; |
591d71cb | 6282 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 6283 | |
29fba38b BH |
6284 | struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
6285 | .sched_state_renewal = nfs4_proc_async_renew, | |
a7b72103 | 6286 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 6287 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
6288 | }; |
6289 | ||
6290 | #if defined(CONFIG_NFS_V4_1) | |
6291 | struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { | |
6292 | .sched_state_renewal = nfs41_proc_async_sequence, | |
a7b72103 | 6293 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 6294 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
6295 | }; |
6296 | #endif | |
6297 | ||
97dc1359 TM |
6298 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
6299 | .minor_version = 0, | |
6300 | .call_sync = _nfs4_call_sync, | |
e047a10c | 6301 | .validate_stateid = nfs4_validate_delegation_stateid, |
fca78d6d | 6302 | .find_root_sec = nfs4_find_root_sec, |
c48f4f35 TM |
6303 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
6304 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
6305 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
6306 | }; |
6307 | ||
6308 | #if defined(CONFIG_NFS_V4_1) | |
6309 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
6310 | .minor_version = 1, | |
6311 | .call_sync = _nfs4_call_sync_session, | |
e047a10c | 6312 | .validate_stateid = nfs41_validate_delegation_stateid, |
fca78d6d | 6313 | .find_root_sec = nfs41_find_root_sec, |
c48f4f35 TM |
6314 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
6315 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
6316 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
6317 | }; |
6318 | #endif | |
6319 | ||
97dc1359 TM |
6320 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
6321 | [0] = &nfs_v4_0_minor_ops, | |
6322 | #if defined(CONFIG_NFS_V4_1) | |
6323 | [1] = &nfs_v4_1_minor_ops, | |
6324 | #endif | |
6325 | }; | |
6326 | ||
92e1d5be | 6327 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
6328 | .permission = nfs_permission, |
6329 | .getattr = nfs_getattr, | |
6330 | .setattr = nfs_setattr, | |
64c2ce8b AK |
6331 | .getxattr = generic_getxattr, |
6332 | .setxattr = generic_setxattr, | |
6333 | .listxattr = generic_listxattr, | |
6334 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
6335 | }; |
6336 | ||
509de811 | 6337 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
6338 | .version = 4, /* protocol version */ |
6339 | .dentry_ops = &nfs4_dentry_operations, | |
6340 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 6341 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 6342 | .file_ops = &nfs4_file_operations, |
1da177e4 LT |
6343 | .getroot = nfs4_proc_get_root, |
6344 | .getattr = nfs4_proc_getattr, | |
6345 | .setattr = nfs4_proc_setattr, | |
6346 | .lookup = nfs4_proc_lookup, | |
6347 | .access = nfs4_proc_access, | |
6348 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
6349 | .create = nfs4_proc_create, |
6350 | .remove = nfs4_proc_remove, | |
6351 | .unlink_setup = nfs4_proc_unlink_setup, | |
6352 | .unlink_done = nfs4_proc_unlink_done, | |
6353 | .rename = nfs4_proc_rename, | |
d3d4152a JL |
6354 | .rename_setup = nfs4_proc_rename_setup, |
6355 | .rename_done = nfs4_proc_rename_done, | |
1da177e4 LT |
6356 | .link = nfs4_proc_link, |
6357 | .symlink = nfs4_proc_symlink, | |
6358 | .mkdir = nfs4_proc_mkdir, | |
6359 | .rmdir = nfs4_proc_remove, | |
6360 | .readdir = nfs4_proc_readdir, | |
6361 | .mknod = nfs4_proc_mknod, | |
6362 | .statfs = nfs4_proc_statfs, | |
6363 | .fsinfo = nfs4_proc_fsinfo, | |
6364 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 6365 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
6366 | .decode_dirent = nfs4_decode_dirent, |
6367 | .read_setup = nfs4_proc_read_setup, | |
ec06c096 | 6368 | .read_done = nfs4_read_done, |
1da177e4 | 6369 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 6370 | .write_done = nfs4_write_done, |
1da177e4 | 6371 | .commit_setup = nfs4_proc_commit_setup, |
788e7a89 | 6372 | .commit_done = nfs4_commit_done, |
1da177e4 | 6373 | .lock = nfs4_proc_lock, |
e50a1c2e | 6374 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 6375 | .close_context = nfs4_close_context, |
2b484297 | 6376 | .open_context = nfs4_atomic_open, |
45a52a02 | 6377 | .init_client = nfs4_init_client, |
5a5ea0d4 | 6378 | .secinfo = nfs4_proc_secinfo, |
1da177e4 LT |
6379 | }; |
6380 | ||
64c2ce8b AK |
6381 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
6382 | .prefix = XATTR_NAME_NFSV4_ACL, | |
6383 | .list = nfs4_xattr_list_nfs4_acl, | |
6384 | .get = nfs4_xattr_get_nfs4_acl, | |
6385 | .set = nfs4_xattr_set_nfs4_acl, | |
6386 | }; | |
6387 | ||
6388 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
6389 | &nfs4_xattr_nfs4_acl_handler, | |
6390 | NULL | |
6391 | }; | |
6392 | ||
1da177e4 LT |
6393 | /* |
6394 | * Local variables: | |
6395 | * c-basic-offset: 8 | |
6396 | * End: | |
6397 | */ |