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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> | |
5a0e3ad6 | 42 | #include <linux/slab.h> |
1da177e4 LT |
43 | #include <linux/sunrpc/clnt.h> |
44 | #include <linux/nfs.h> | |
45 | #include <linux/nfs4.h> | |
46 | #include <linux/nfs_fs.h> | |
47 | #include <linux/nfs_page.h> | |
1da177e4 | 48 | #include <linux/namei.h> |
02a913a7 | 49 | #include <linux/mount.h> |
99fe60d0 | 50 | #include <linux/module.h> |
5a0ffe54 | 51 | #include <linux/sunrpc/bc_xprt.h> |
64c2ce8b | 52 | #include <linux/xattr.h> |
c7a360b0 | 53 | #include <linux/utsname.h> |
1da177e4 | 54 | |
4ce79717 | 55 | #include "nfs4_fs.h" |
1da177e4 | 56 | #include "delegation.h" |
101070ca | 57 | #include "internal.h" |
006ea73e | 58 | #include "iostat.h" |
fc931582 | 59 | #include "callback.h" |
b1f69b75 | 60 | #include "pnfs.h" |
1da177e4 LT |
61 | |
62 | #define NFSDBG_FACILITY NFSDBG_PROC | |
63 | ||
2066fe89 | 64 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
65 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
66 | ||
a78cb57a TM |
67 | #define NFS4_MAX_LOOP_ON_RECOVER (10) |
68 | ||
cdd4e68b | 69 | struct nfs4_opendata; |
864472e9 | 70 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
b257957e | 71 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data); |
1da177e4 | 72 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
9e33bed5 | 73 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *); |
7c513058 BS |
74 | static int _nfs4_proc_lookup(struct rpc_clnt *client, struct inode *dir, |
75 | const struct qstr *name, struct nfs_fh *fhandle, | |
76 | struct nfs_fattr *fattr); | |
9936781d | 77 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr); |
0ab64e0e TM |
78 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
79 | struct nfs_fattr *fattr, struct iattr *sattr, | |
80 | struct nfs4_state *state); | |
1da177e4 | 81 | |
1da177e4 | 82 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 83 | static int nfs4_map_errors(int err) |
1da177e4 | 84 | { |
52567b03 TM |
85 | if (err >= -1000) |
86 | return err; | |
87 | switch (err) { | |
88 | case -NFS4ERR_RESOURCE: | |
89 | return -EREMOTEIO; | |
3ddeb7c5 TM |
90 | case -NFS4ERR_BADOWNER: |
91 | case -NFS4ERR_BADNAME: | |
92 | return -EINVAL; | |
52567b03 | 93 | default: |
1da177e4 | 94 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 95 | __func__, -err); |
52567b03 | 96 | break; |
1da177e4 | 97 | } |
52567b03 | 98 | return -EIO; |
1da177e4 LT |
99 | } |
100 | ||
101 | /* | |
102 | * This is our standard bitmap for GETATTR requests. | |
103 | */ | |
104 | const u32 nfs4_fattr_bitmap[2] = { | |
105 | FATTR4_WORD0_TYPE | |
106 | | FATTR4_WORD0_CHANGE | |
107 | | FATTR4_WORD0_SIZE | |
108 | | FATTR4_WORD0_FSID | |
109 | | FATTR4_WORD0_FILEID, | |
110 | FATTR4_WORD1_MODE | |
111 | | FATTR4_WORD1_NUMLINKS | |
112 | | FATTR4_WORD1_OWNER | |
113 | | FATTR4_WORD1_OWNER_GROUP | |
114 | | FATTR4_WORD1_RAWDEV | |
115 | | FATTR4_WORD1_SPACE_USED | |
116 | | FATTR4_WORD1_TIME_ACCESS | |
117 | | FATTR4_WORD1_TIME_METADATA | |
118 | | FATTR4_WORD1_TIME_MODIFY | |
119 | }; | |
120 | ||
121 | const u32 nfs4_statfs_bitmap[2] = { | |
122 | FATTR4_WORD0_FILES_AVAIL | |
123 | | FATTR4_WORD0_FILES_FREE | |
124 | | FATTR4_WORD0_FILES_TOTAL, | |
125 | FATTR4_WORD1_SPACE_AVAIL | |
126 | | FATTR4_WORD1_SPACE_FREE | |
127 | | FATTR4_WORD1_SPACE_TOTAL | |
128 | }; | |
129 | ||
4ce79717 | 130 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
131 | FATTR4_WORD0_MAXLINK |
132 | | FATTR4_WORD0_MAXNAME, | |
133 | 0 | |
134 | }; | |
135 | ||
136 | const u32 nfs4_fsinfo_bitmap[2] = { FATTR4_WORD0_MAXFILESIZE | |
137 | | FATTR4_WORD0_MAXREAD | |
138 | | FATTR4_WORD0_MAXWRITE | |
139 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 140 | FATTR4_WORD1_TIME_DELTA |
504913fb | 141 | | FATTR4_WORD1_FS_LAYOUT_TYPES |
1da177e4 LT |
142 | }; |
143 | ||
830b8e33 MN |
144 | const u32 nfs4_fs_locations_bitmap[2] = { |
145 | FATTR4_WORD0_TYPE | |
146 | | FATTR4_WORD0_CHANGE | |
147 | | FATTR4_WORD0_SIZE | |
148 | | FATTR4_WORD0_FSID | |
149 | | FATTR4_WORD0_FILEID | |
150 | | FATTR4_WORD0_FS_LOCATIONS, | |
151 | FATTR4_WORD1_MODE | |
152 | | FATTR4_WORD1_NUMLINKS | |
153 | | FATTR4_WORD1_OWNER | |
154 | | FATTR4_WORD1_OWNER_GROUP | |
155 | | FATTR4_WORD1_RAWDEV | |
156 | | FATTR4_WORD1_SPACE_USED | |
157 | | FATTR4_WORD1_TIME_ACCESS | |
158 | | FATTR4_WORD1_TIME_METADATA | |
159 | | FATTR4_WORD1_TIME_MODIFY | |
160 | | FATTR4_WORD1_MOUNTED_ON_FILEID | |
161 | }; | |
162 | ||
bc4785cd | 163 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
164 | struct nfs4_readdir_arg *readdir) |
165 | { | |
0dbb4c67 | 166 | __be32 *start, *p; |
1da177e4 LT |
167 | |
168 | BUG_ON(readdir->count < 80); | |
169 | if (cookie > 2) { | |
b7ef1956 | 170 | readdir->cookie = cookie; |
1da177e4 LT |
171 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
172 | return; | |
173 | } | |
174 | ||
175 | readdir->cookie = 0; | |
176 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
177 | if (cookie == 2) | |
178 | return; | |
179 | ||
180 | /* | |
181 | * NFSv4 servers do not return entries for '.' and '..' | |
182 | * Therefore, we fake these entries here. We let '.' | |
183 | * have cookie 0 and '..' have cookie 1. Note that | |
184 | * when talking to the server, we always send cookie 0 | |
185 | * instead of 1 or 2. | |
186 | */ | |
0dbb4c67 | 187 | start = p = kmap_atomic(*readdir->pages, KM_USER0); |
1da177e4 LT |
188 | |
189 | if (cookie == 0) { | |
190 | *p++ = xdr_one; /* next */ | |
191 | *p++ = xdr_zero; /* cookie, first word */ | |
192 | *p++ = xdr_one; /* cookie, second word */ | |
193 | *p++ = xdr_one; /* entry len */ | |
194 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
195 | p++; | |
196 | *p++ = xdr_one; /* bitmap length */ | |
197 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
198 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 199 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
200 | } |
201 | ||
202 | *p++ = xdr_one; /* next */ | |
203 | *p++ = xdr_zero; /* cookie, first word */ | |
204 | *p++ = xdr_two; /* cookie, second word */ | |
205 | *p++ = xdr_two; /* entry len */ | |
206 | memcpy(p, "..\0\0", 4); /* entry */ | |
207 | p++; | |
208 | *p++ = xdr_one; /* bitmap length */ | |
209 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
210 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 211 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
212 | |
213 | readdir->pgbase = (char *)p - (char *)start; | |
214 | readdir->count -= readdir->pgbase; | |
215 | kunmap_atomic(start, KM_USER0); | |
216 | } | |
217 | ||
65de872e TM |
218 | static int nfs4_wait_clnt_recover(struct nfs_client *clp) |
219 | { | |
220 | int res; | |
221 | ||
222 | might_sleep(); | |
223 | ||
e005e804 | 224 | res = wait_on_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING, |
72cb77f4 | 225 | nfs_wait_bit_killable, TASK_KILLABLE); |
65de872e TM |
226 | return res; |
227 | } | |
228 | ||
229 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) | |
230 | { | |
231 | int res = 0; | |
232 | ||
233 | might_sleep(); | |
234 | ||
235 | if (*timeout <= 0) | |
236 | *timeout = NFS4_POLL_RETRY_MIN; | |
237 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
238 | *timeout = NFS4_POLL_RETRY_MAX; | |
239 | schedule_timeout_killable(*timeout); | |
240 | if (fatal_signal_pending(current)) | |
241 | res = -ERESTARTSYS; | |
242 | *timeout <<= 1; | |
243 | return res; | |
244 | } | |
245 | ||
246 | /* This is the error handling routine for processes that are allowed | |
247 | * to sleep. | |
248 | */ | |
b064eca2 | 249 | static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
65de872e TM |
250 | { |
251 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 252 | struct nfs4_state *state = exception->state; |
65de872e TM |
253 | int ret = errorcode; |
254 | ||
255 | exception->retry = 0; | |
256 | switch(errorcode) { | |
257 | case 0: | |
258 | return 0; | |
9e33bed5 TM |
259 | case -NFS4ERR_ADMIN_REVOKED: |
260 | case -NFS4ERR_BAD_STATEID: | |
261 | case -NFS4ERR_OPENMODE: | |
262 | if (state == NULL) | |
263 | break; | |
0400a6b0 TM |
264 | nfs4_schedule_stateid_recovery(server, state); |
265 | goto wait_on_recovery; | |
65de872e | 266 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 267 | case -NFS4ERR_STALE_CLIENTID: |
65de872e | 268 | case -NFS4ERR_EXPIRED: |
0400a6b0 TM |
269 | nfs4_schedule_lease_recovery(clp); |
270 | goto wait_on_recovery; | |
03391693 | 271 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
272 | case -NFS4ERR_BADSESSION: |
273 | case -NFS4ERR_BADSLOT: | |
274 | case -NFS4ERR_BAD_HIGH_SLOT: | |
275 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
276 | case -NFS4ERR_DEADSESSION: | |
277 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
278 | case -NFS4ERR_SEQ_MISORDERED: | |
279 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
280 | errorcode); | |
0400a6b0 | 281 | nfs4_schedule_session_recovery(clp->cl_session); |
4745e315 | 282 | exception->retry = 1; |
b9179237 | 283 | break; |
03391693 | 284 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 285 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
286 | if (exception->timeout > HZ) { |
287 | /* We have retried a decent amount, time to | |
288 | * fail | |
289 | */ | |
290 | ret = -EBUSY; | |
291 | break; | |
292 | } | |
65de872e TM |
293 | case -NFS4ERR_GRACE: |
294 | case -NFS4ERR_DELAY: | |
2c643488 | 295 | case -EKEYEXPIRED: |
65de872e TM |
296 | ret = nfs4_delay(server->client, &exception->timeout); |
297 | if (ret != 0) | |
298 | break; | |
299 | case -NFS4ERR_OLD_STATEID: | |
300 | exception->retry = 1; | |
b064eca2 TM |
301 | break; |
302 | case -NFS4ERR_BADOWNER: | |
303 | /* The following works around a Linux server bug! */ | |
304 | case -NFS4ERR_BADNAME: | |
305 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
306 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
307 | exception->retry = 1; | |
308 | printk(KERN_WARNING "NFS: v4 server %s " | |
309 | "does not accept raw " | |
310 | "uid/gids. " | |
311 | "Reenabling the idmapper.\n", | |
312 | server->nfs_client->cl_hostname); | |
313 | } | |
65de872e TM |
314 | } |
315 | /* We failed to handle the error */ | |
316 | return nfs4_map_errors(ret); | |
0400a6b0 | 317 | wait_on_recovery: |
a2c0b9e2 TM |
318 | ret = nfs4_wait_clnt_recover(clp); |
319 | if (ret == 0) | |
320 | exception->retry = 1; | |
321 | return ret; | |
65de872e TM |
322 | } |
323 | ||
324 | ||
452e9352 | 325 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 326 | { |
1da177e4 LT |
327 | spin_lock(&clp->cl_lock); |
328 | if (time_before(clp->cl_last_renewal,timestamp)) | |
329 | clp->cl_last_renewal = timestamp; | |
330 | spin_unlock(&clp->cl_lock); | |
331 | } | |
332 | ||
452e9352 TM |
333 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
334 | { | |
335 | do_renew_lease(server->nfs_client, timestamp); | |
336 | } | |
337 | ||
cccef3b9 AA |
338 | #if defined(CONFIG_NFS_V4_1) |
339 | ||
e2c4ab3c AA |
340 | /* |
341 | * nfs4_free_slot - free a slot and efficiently update slot table. | |
342 | * | |
343 | * freeing a slot is trivially done by clearing its respective bit | |
344 | * in the bitmap. | |
345 | * If the freed slotid equals highest_used_slotid we want to update it | |
346 | * so that the server would be able to size down the slot table if needed, | |
347 | * otherwise we know that the highest_used_slotid is still in use. | |
348 | * When updating highest_used_slotid there may be "holes" in the bitmap | |
349 | * so we need to scan down from highest_used_slotid to 0 looking for the now | |
350 | * highest slotid in use. | |
351 | * If none found, highest_used_slotid is set to -1. | |
35dc1d74 TM |
352 | * |
353 | * Must be called while holding tbl->slot_tbl_lock | |
e2c4ab3c AA |
354 | */ |
355 | static void | |
dfb4f309 | 356 | nfs4_free_slot(struct nfs4_slot_table *tbl, struct nfs4_slot *free_slot) |
e2c4ab3c | 357 | { |
dfb4f309 | 358 | int free_slotid = free_slot - tbl->slots; |
e2c4ab3c AA |
359 | int slotid = free_slotid; |
360 | ||
dfb4f309 | 361 | BUG_ON(slotid < 0 || slotid >= NFS4_MAX_SLOT_TABLE); |
e2c4ab3c AA |
362 | /* clear used bit in bitmap */ |
363 | __clear_bit(slotid, tbl->used_slots); | |
364 | ||
365 | /* update highest_used_slotid when it is freed */ | |
366 | if (slotid == tbl->highest_used_slotid) { | |
367 | slotid = find_last_bit(tbl->used_slots, tbl->max_slots); | |
bcb56164 | 368 | if (slotid < tbl->max_slots) |
e2c4ab3c AA |
369 | tbl->highest_used_slotid = slotid; |
370 | else | |
371 | tbl->highest_used_slotid = -1; | |
372 | } | |
e2c4ab3c AA |
373 | dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__, |
374 | free_slotid, tbl->highest_used_slotid); | |
375 | } | |
376 | ||
3bfb0fc5 | 377 | /* |
42acd021 | 378 | * Signal state manager thread if session fore channel is drained |
3bfb0fc5 | 379 | */ |
42acd021 | 380 | static void nfs4_check_drain_fc_complete(struct nfs4_session *ses) |
3bfb0fc5 | 381 | { |
689cf5c1 AB |
382 | struct rpc_task *task; |
383 | ||
a2118c33 | 384 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state)) { |
689cf5c1 AB |
385 | task = rpc_wake_up_next(&ses->fc_slot_table.slot_tbl_waitq); |
386 | if (task) | |
387 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
3bfb0fc5 AB |
388 | return; |
389 | } | |
390 | ||
391 | if (ses->fc_slot_table.highest_used_slotid != -1) | |
392 | return; | |
393 | ||
42acd021 AA |
394 | dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__); |
395 | complete(&ses->fc_slot_table.complete); | |
396 | } | |
397 | ||
398 | /* | |
399 | * Signal state manager thread if session back channel is drained | |
400 | */ | |
401 | void nfs4_check_drain_bc_complete(struct nfs4_session *ses) | |
402 | { | |
403 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state) || | |
404 | ses->bc_slot_table.highest_used_slotid != -1) | |
405 | return; | |
406 | dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__); | |
407 | complete(&ses->bc_slot_table.complete); | |
3bfb0fc5 AB |
408 | } |
409 | ||
d185a334 | 410 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 AA |
411 | { |
412 | struct nfs4_slot_table *tbl; | |
413 | ||
d185a334 | 414 | tbl = &res->sr_session->fc_slot_table; |
dfb4f309 | 415 | if (!res->sr_slot) { |
13615871 AA |
416 | /* just wake up the next guy waiting since |
417 | * we may have not consumed a slot after all */ | |
691daf3b | 418 | dprintk("%s: No slot\n", __func__); |
35dc1d74 | 419 | return; |
13615871 | 420 | } |
ea028ac9 | 421 | |
35dc1d74 | 422 | spin_lock(&tbl->slot_tbl_lock); |
dfb4f309 | 423 | nfs4_free_slot(tbl, res->sr_slot); |
42acd021 | 424 | nfs4_check_drain_fc_complete(res->sr_session); |
35dc1d74 | 425 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 426 | res->sr_slot = NULL; |
13615871 AA |
427 | } |
428 | ||
14516c3a | 429 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c AA |
430 | { |
431 | unsigned long timestamp; | |
14516c3a | 432 | struct nfs_client *clp; |
b0df806c AA |
433 | |
434 | /* | |
435 | * sr_status remains 1 if an RPC level error occurred. The server | |
436 | * may or may not have processed the sequence operation.. | |
437 | * Proceed as if the server received and processed the sequence | |
438 | * operation. | |
439 | */ | |
440 | if (res->sr_status == 1) | |
441 | res->sr_status = NFS_OK; | |
442 | ||
443 | /* -ERESTARTSYS can result in skipping nfs41_sequence_setup */ | |
dfb4f309 | 444 | if (!res->sr_slot) |
b0df806c AA |
445 | goto out; |
446 | ||
691daf3b | 447 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
448 | switch (res->sr_status) { |
449 | case 0: | |
b0df806c | 450 | /* Update the slot's sequence and clientid lease timer */ |
dfb4f309 | 451 | ++res->sr_slot->seq_nr; |
b0df806c | 452 | timestamp = res->sr_renewal_time; |
14516c3a | 453 | clp = res->sr_session->clp; |
452e9352 | 454 | do_renew_lease(clp, timestamp); |
0629e370 | 455 | /* Check sequence flags */ |
b4410c2f TM |
456 | if (res->sr_status_flags != 0) |
457 | nfs4_schedule_lease_recovery(clp); | |
14516c3a TM |
458 | break; |
459 | case -NFS4ERR_DELAY: | |
460 | /* The server detected a resend of the RPC call and | |
461 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
462 | * of RFC5661. | |
463 | */ | |
12364a4f | 464 | dprintk("%s: slot=%td seq=%d: Operation in progress\n", |
dfb4f309 BH |
465 | __func__, |
466 | res->sr_slot - res->sr_session->fc_slot_table.slots, | |
467 | res->sr_slot->seq_nr); | |
14516c3a TM |
468 | goto out_retry; |
469 | default: | |
470 | /* Just update the slot sequence no. */ | |
dfb4f309 | 471 | ++res->sr_slot->seq_nr; |
b0df806c AA |
472 | } |
473 | out: | |
474 | /* The session may be reset by one of the error handlers. */ | |
475 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 476 | nfs41_sequence_free_slot(res); |
14516c3a TM |
477 | return 1; |
478 | out_retry: | |
d05dd4e9 | 479 | if (!rpc_restart_call(task)) |
14516c3a TM |
480 | goto out; |
481 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
482 | return 0; | |
b0df806c AA |
483 | } |
484 | ||
14516c3a TM |
485 | static int nfs4_sequence_done(struct rpc_task *task, |
486 | struct nfs4_sequence_res *res) | |
df896455 | 487 | { |
14516c3a TM |
488 | if (res->sr_session == NULL) |
489 | return 1; | |
490 | return nfs41_sequence_done(task, res); | |
df896455 TM |
491 | } |
492 | ||
510b8175 BH |
493 | /* |
494 | * nfs4_find_slot - efficiently look for a free slot | |
495 | * | |
496 | * nfs4_find_slot looks for an unset bit in the used_slots bitmap. | |
497 | * If found, we mark the slot as used, update the highest_used_slotid, | |
498 | * and respectively set up the sequence operation args. | |
499 | * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise. | |
fbcd4abc AA |
500 | * |
501 | * Note: must be called with under the slot_tbl_lock. | |
510b8175 BH |
502 | */ |
503 | static u8 | |
40ead580 | 504 | nfs4_find_slot(struct nfs4_slot_table *tbl) |
510b8175 BH |
505 | { |
506 | int slotid; | |
507 | u8 ret_id = NFS4_MAX_SLOT_TABLE; | |
508 | BUILD_BUG_ON((u8)NFS4_MAX_SLOT_TABLE != (int)NFS4_MAX_SLOT_TABLE); | |
509 | ||
510b8175 BH |
510 | dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n", |
511 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, | |
512 | tbl->max_slots); | |
513 | slotid = find_first_zero_bit(tbl->used_slots, tbl->max_slots); | |
514 | if (slotid >= tbl->max_slots) | |
515 | goto out; | |
516 | __set_bit(slotid, tbl->used_slots); | |
517 | if (slotid > tbl->highest_used_slotid) | |
518 | tbl->highest_used_slotid = slotid; | |
519 | ret_id = slotid; | |
520 | out: | |
521 | dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n", | |
522 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, ret_id); | |
510b8175 BH |
523 | return ret_id; |
524 | } | |
525 | ||
dc70d7b3 | 526 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
527 | struct nfs4_sequence_args *args, |
528 | struct nfs4_sequence_res *res, | |
529 | int cache_reply, | |
530 | struct rpc_task *task) | |
531 | { | |
fbcd4abc AA |
532 | struct nfs4_slot *slot; |
533 | struct nfs4_slot_table *tbl; | |
534 | u8 slotid; | |
535 | ||
536 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 537 | /* slot already allocated? */ |
dfb4f309 | 538 | if (res->sr_slot != NULL) |
ce5039c1 AA |
539 | return 0; |
540 | ||
fbcd4abc AA |
541 | tbl = &session->fc_slot_table; |
542 | ||
543 | spin_lock(&tbl->slot_tbl_lock); | |
a2118c33 | 544 | if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) && |
5601a00d | 545 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { |
ea028ac9 AA |
546 | /* |
547 | * The state manager will wait until the slot table is empty. | |
548 | * Schedule the reset thread | |
549 | */ | |
05f0d236 | 550 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
b069d94a | 551 | spin_unlock(&tbl->slot_tbl_lock); |
bcb56164 | 552 | dprintk("%s Schedule Session Reset\n", __func__); |
05f0d236 | 553 | return -EAGAIN; |
b069d94a AA |
554 | } |
555 | ||
689cf5c1 AB |
556 | if (!rpc_queue_empty(&tbl->slot_tbl_waitq) && |
557 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { | |
558 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
559 | spin_unlock(&tbl->slot_tbl_lock); | |
560 | dprintk("%s enforce FIFO order\n", __func__); | |
561 | return -EAGAIN; | |
562 | } | |
563 | ||
40ead580 | 564 | slotid = nfs4_find_slot(tbl); |
fbcd4abc AA |
565 | if (slotid == NFS4_MAX_SLOT_TABLE) { |
566 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
567 | spin_unlock(&tbl->slot_tbl_lock); | |
568 | dprintk("<-- %s: no free slots\n", __func__); | |
569 | return -EAGAIN; | |
570 | } | |
571 | spin_unlock(&tbl->slot_tbl_lock); | |
572 | ||
689cf5c1 | 573 | rpc_task_set_priority(task, RPC_PRIORITY_NORMAL); |
fbcd4abc | 574 | slot = tbl->slots + slotid; |
99fe60d0 | 575 | args->sa_session = session; |
fbcd4abc AA |
576 | args->sa_slotid = slotid; |
577 | args->sa_cache_this = cache_reply; | |
578 | ||
579 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, slotid, slot->seq_nr); | |
580 | ||
99fe60d0 | 581 | res->sr_session = session; |
dfb4f309 | 582 | res->sr_slot = slot; |
fbcd4abc | 583 | res->sr_renewal_time = jiffies; |
2a6e26cd | 584 | res->sr_status_flags = 0; |
fbcd4abc AA |
585 | /* |
586 | * sr_status is only set in decode_sequence, and so will remain | |
587 | * set to 1 if an rpc level failure occurs. | |
588 | */ | |
589 | res->sr_status = 1; | |
ce5039c1 AA |
590 | return 0; |
591 | } | |
dc70d7b3 | 592 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 593 | |
035168ab | 594 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
595 | struct nfs4_sequence_args *args, |
596 | struct nfs4_sequence_res *res, | |
597 | int cache_reply, | |
598 | struct rpc_task *task) | |
599 | { | |
035168ab | 600 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
601 | int ret = 0; |
602 | ||
035168ab TM |
603 | if (session == NULL) { |
604 | args->sa_session = NULL; | |
605 | res->sr_session = NULL; | |
606 | goto out; | |
607 | } | |
608 | ||
12364a4f | 609 | dprintk("--> %s clp %p session %p sr_slot %td\n", |
dfb4f309 BH |
610 | __func__, session->clp, session, res->sr_slot ? |
611 | res->sr_slot - session->fc_slot_table.slots : -1); | |
ce5039c1 | 612 | |
035168ab | 613 | ret = nfs41_setup_sequence(session, args, res, cache_reply, |
ce5039c1 | 614 | task); |
ce5039c1 AA |
615 | out: |
616 | dprintk("<-- %s status=%d\n", __func__, ret); | |
617 | return ret; | |
618 | } | |
619 | ||
620 | struct nfs41_call_sync_data { | |
035168ab | 621 | const struct nfs_server *seq_server; |
ce5039c1 AA |
622 | struct nfs4_sequence_args *seq_args; |
623 | struct nfs4_sequence_res *seq_res; | |
624 | int cache_reply; | |
625 | }; | |
626 | ||
627 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
628 | { | |
629 | struct nfs41_call_sync_data *data = calldata; | |
630 | ||
035168ab TM |
631 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
632 | ||
633 | if (nfs4_setup_sequence(data->seq_server, data->seq_args, | |
ce5039c1 AA |
634 | data->seq_res, data->cache_reply, task)) |
635 | return; | |
636 | rpc_call_start(task); | |
637 | } | |
638 | ||
b257957e AB |
639 | static void nfs41_call_priv_sync_prepare(struct rpc_task *task, void *calldata) |
640 | { | |
641 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
642 | nfs41_call_sync_prepare(task, calldata); | |
643 | } | |
644 | ||
69ab40c4 AA |
645 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
646 | { | |
647 | struct nfs41_call_sync_data *data = calldata; | |
648 | ||
14516c3a | 649 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
650 | } |
651 | ||
ce5039c1 AA |
652 | struct rpc_call_ops nfs41_call_sync_ops = { |
653 | .rpc_call_prepare = nfs41_call_sync_prepare, | |
69ab40c4 | 654 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
655 | }; |
656 | ||
b257957e AB |
657 | struct rpc_call_ops nfs41_call_priv_sync_ops = { |
658 | .rpc_call_prepare = nfs41_call_priv_sync_prepare, | |
659 | .rpc_call_done = nfs41_call_sync_done, | |
660 | }; | |
661 | ||
7c513058 BS |
662 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
663 | struct nfs_server *server, | |
ce5039c1 AA |
664 | struct rpc_message *msg, |
665 | struct nfs4_sequence_args *args, | |
666 | struct nfs4_sequence_res *res, | |
b257957e AB |
667 | int cache_reply, |
668 | int privileged) | |
ce5039c1 AA |
669 | { |
670 | int ret; | |
671 | struct rpc_task *task; | |
672 | struct nfs41_call_sync_data data = { | |
035168ab | 673 | .seq_server = server, |
ce5039c1 AA |
674 | .seq_args = args, |
675 | .seq_res = res, | |
676 | .cache_reply = cache_reply, | |
677 | }; | |
678 | struct rpc_task_setup task_setup = { | |
7c513058 | 679 | .rpc_client = clnt, |
ce5039c1 AA |
680 | .rpc_message = msg, |
681 | .callback_ops = &nfs41_call_sync_ops, | |
682 | .callback_data = &data | |
683 | }; | |
684 | ||
dfb4f309 | 685 | res->sr_slot = NULL; |
b257957e AB |
686 | if (privileged) |
687 | task_setup.callback_ops = &nfs41_call_priv_sync_ops; | |
ce5039c1 AA |
688 | task = rpc_run_task(&task_setup); |
689 | if (IS_ERR(task)) | |
690 | ret = PTR_ERR(task); | |
691 | else { | |
692 | ret = task->tk_status; | |
693 | rpc_put_task(task); | |
694 | } | |
695 | return ret; | |
696 | } | |
697 | ||
7c513058 BS |
698 | int _nfs4_call_sync_session(struct rpc_clnt *clnt, |
699 | struct nfs_server *server, | |
cccef3b9 AA |
700 | struct rpc_message *msg, |
701 | struct nfs4_sequence_args *args, | |
702 | struct nfs4_sequence_res *res, | |
703 | int cache_reply) | |
704 | { | |
7c513058 | 705 | return nfs4_call_sync_sequence(clnt, server, msg, args, res, cache_reply, 0); |
cccef3b9 AA |
706 | } |
707 | ||
df896455 | 708 | #else |
14516c3a TM |
709 | static int nfs4_sequence_done(struct rpc_task *task, |
710 | struct nfs4_sequence_res *res) | |
df896455 | 711 | { |
14516c3a | 712 | return 1; |
df896455 | 713 | } |
cccef3b9 AA |
714 | #endif /* CONFIG_NFS_V4_1 */ |
715 | ||
7c513058 BS |
716 | int _nfs4_call_sync(struct rpc_clnt *clnt, |
717 | struct nfs_server *server, | |
cccef3b9 AA |
718 | struct rpc_message *msg, |
719 | struct nfs4_sequence_args *args, | |
720 | struct nfs4_sequence_res *res, | |
721 | int cache_reply) | |
722 | { | |
f3752975 | 723 | args->sa_session = res->sr_session = NULL; |
7c513058 | 724 | return rpc_call_sync(clnt, msg, 0); |
cccef3b9 AA |
725 | } |
726 | ||
e73b83f2 | 727 | static inline |
7c513058 BS |
728 | int nfs4_call_sync(struct rpc_clnt *clnt, |
729 | struct nfs_server *server, | |
e73b83f2 BS |
730 | struct rpc_message *msg, |
731 | struct nfs4_sequence_args *args, | |
732 | struct nfs4_sequence_res *res, | |
733 | int cache_reply) | |
734 | { | |
7c513058 BS |
735 | return server->nfs_client->cl_mvops->call_sync(clnt, server, msg, |
736 | args, res, cache_reply); | |
e73b83f2 | 737 | } |
cccef3b9 | 738 | |
38478b24 | 739 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 740 | { |
38478b24 | 741 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 742 | |
38478b24 | 743 | spin_lock(&dir->i_lock); |
40d24704 TM |
744 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; |
745 | if (!cinfo->atomic || cinfo->before != nfsi->change_attr) | |
bfc69a45 | 746 | nfs_force_lookup_revalidate(dir); |
40d24704 | 747 | nfsi->change_attr = cinfo->after; |
38478b24 | 748 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
749 | } |
750 | ||
e56e0b78 | 751 | struct nfs4_opendata { |
c6d00e63 | 752 | struct kref kref; |
e56e0b78 TM |
753 | struct nfs_openargs o_arg; |
754 | struct nfs_openres o_res; | |
cdd4e68b TM |
755 | struct nfs_open_confirmargs c_arg; |
756 | struct nfs_open_confirmres c_res; | |
e56e0b78 TM |
757 | struct nfs_fattr f_attr; |
758 | struct nfs_fattr dir_attr; | |
ad389da7 | 759 | struct path path; |
e56e0b78 TM |
760 | struct dentry *dir; |
761 | struct nfs4_state_owner *owner; | |
aac00a8d | 762 | struct nfs4_state *state; |
e56e0b78 | 763 | struct iattr attrs; |
26e976a8 | 764 | unsigned long timestamp; |
3e309914 | 765 | unsigned int rpc_done : 1; |
24ac23ab TM |
766 | int rpc_status; |
767 | int cancelled; | |
e56e0b78 TM |
768 | }; |
769 | ||
2ced46c2 TM |
770 | |
771 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
772 | { | |
773 | p->o_res.f_attr = &p->f_attr; | |
774 | p->o_res.dir_attr = &p->dir_attr; | |
c1d51931 TM |
775 | p->o_res.seqid = p->o_arg.seqid; |
776 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 TM |
777 | p->o_res.server = p->o_arg.server; |
778 | nfs_fattr_init(&p->f_attr); | |
779 | nfs_fattr_init(&p->dir_attr); | |
780 | } | |
781 | ||
ad389da7 | 782 | static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path, |
dc0b027d | 783 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be TM |
784 | const struct iattr *attrs, |
785 | gfp_t gfp_mask) | |
e56e0b78 | 786 | { |
ad389da7 | 787 | struct dentry *parent = dget_parent(path->dentry); |
e56e0b78 TM |
788 | struct inode *dir = parent->d_inode; |
789 | struct nfs_server *server = NFS_SERVER(dir); | |
790 | struct nfs4_opendata *p; | |
791 | ||
8535b2be | 792 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
793 | if (p == NULL) |
794 | goto err; | |
8535b2be | 795 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 TM |
796 | if (p->o_arg.seqid == NULL) |
797 | goto err_free; | |
f6948697 AV |
798 | path_get(path); |
799 | p->path = *path; | |
e56e0b78 TM |
800 | p->dir = parent; |
801 | p->owner = sp; | |
802 | atomic_inc(&sp->so_count); | |
803 | p->o_arg.fh = NFS_FH(dir); | |
dc0b027d TM |
804 | p->o_arg.open_flags = flags; |
805 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
7539bbab | 806 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 807 | p->o_arg.id = sp->so_owner_id.id; |
ad389da7 | 808 | p->o_arg.name = &p->path.dentry->d_name; |
e56e0b78 TM |
809 | p->o_arg.server = server; |
810 | p->o_arg.bitmask = server->attr_bitmask; | |
811 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; | |
d77d76ff TM |
812 | if (flags & O_CREAT) { |
813 | u32 *s; | |
814 | ||
e56e0b78 TM |
815 | p->o_arg.u.attrs = &p->attrs; |
816 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
d77d76ff TM |
817 | s = (u32 *) p->o_arg.u.verifier.data; |
818 | s[0] = jiffies; | |
819 | s[1] = current->pid; | |
e56e0b78 | 820 | } |
cdd4e68b TM |
821 | p->c_arg.fh = &p->o_res.fh; |
822 | p->c_arg.stateid = &p->o_res.stateid; | |
823 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 824 | nfs4_init_opendata_res(p); |
c6d00e63 | 825 | kref_init(&p->kref); |
e56e0b78 TM |
826 | return p; |
827 | err_free: | |
828 | kfree(p); | |
829 | err: | |
830 | dput(parent); | |
831 | return NULL; | |
832 | } | |
833 | ||
c6d00e63 | 834 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 835 | { |
c6d00e63 TM |
836 | struct nfs4_opendata *p = container_of(kref, |
837 | struct nfs4_opendata, kref); | |
838 | ||
839 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
840 | if (p->state != NULL) |
841 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
842 | nfs4_put_state_owner(p->owner); |
843 | dput(p->dir); | |
31f31db1 | 844 | path_put(&p->path); |
c6d00e63 TM |
845 | kfree(p); |
846 | } | |
847 | ||
848 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
849 | { | |
850 | if (p != NULL) | |
851 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
852 | } |
853 | ||
06f814a3 TM |
854 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
855 | { | |
06f814a3 TM |
856 | int ret; |
857 | ||
06f814a3 | 858 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
859 | return ret; |
860 | } | |
861 | ||
dc0b027d | 862 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
863 | { |
864 | int ret = 0; | |
dc0b027d TM |
865 | |
866 | if (open_mode & O_EXCL) | |
867 | goto out; | |
868 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 869 | case FMODE_READ: |
88069f77 TM |
870 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
871 | && state->n_rdonly != 0; | |
6ee41268 TM |
872 | break; |
873 | case FMODE_WRITE: | |
88069f77 TM |
874 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
875 | && state->n_wronly != 0; | |
6ee41268 TM |
876 | break; |
877 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
878 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
879 | && state->n_rdwr != 0; | |
6ee41268 | 880 | } |
dc0b027d | 881 | out: |
6ee41268 TM |
882 | return ret; |
883 | } | |
884 | ||
dc0b027d | 885 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 886 | { |
dc0b027d | 887 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 888 | return 0; |
15c831bf | 889 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 890 | return 0; |
b7391f44 | 891 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
892 | return 1; |
893 | } | |
894 | ||
dc0b027d | 895 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 896 | { |
dc0b027d | 897 | switch (fmode) { |
e7616923 TM |
898 | case FMODE_WRITE: |
899 | state->n_wronly++; | |
900 | break; | |
901 | case FMODE_READ: | |
902 | state->n_rdonly++; | |
903 | break; | |
904 | case FMODE_READ|FMODE_WRITE: | |
905 | state->n_rdwr++; | |
906 | } | |
dc0b027d | 907 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
908 | } |
909 | ||
dc0b027d | 910 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
911 | { |
912 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
913 | memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data)); | |
914 | memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data)); | |
dc0b027d | 915 | switch (fmode) { |
003707c7 TM |
916 | case FMODE_READ: |
917 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
918 | break; | |
919 | case FMODE_WRITE: | |
920 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
921 | break; | |
922 | case FMODE_READ|FMODE_WRITE: | |
923 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
924 | } | |
e7616923 TM |
925 | } |
926 | ||
dc0b027d | 927 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 928 | { |
8bda4e4c | 929 | write_seqlock(&state->seqlock); |
dc0b027d | 930 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 931 | write_sequnlock(&state->seqlock); |
003707c7 TM |
932 | } |
933 | ||
dc0b027d | 934 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 935 | { |
8bda4e4c TM |
936 | /* |
937 | * Protect the call to nfs4_state_set_mode_locked and | |
938 | * serialise the stateid update | |
939 | */ | |
940 | write_seqlock(&state->seqlock); | |
003707c7 TM |
941 | if (deleg_stateid != NULL) { |
942 | memcpy(state->stateid.data, deleg_stateid->data, sizeof(state->stateid.data)); | |
943 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
944 | } | |
945 | if (open_stateid != NULL) | |
dc0b027d | 946 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
947 | write_sequnlock(&state->seqlock); |
948 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 949 | update_open_stateflags(state, fmode); |
ec073428 | 950 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
951 | } |
952 | ||
dc0b027d | 953 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
954 | { |
955 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
956 | struct nfs_delegation *deleg_cur; | |
957 | int ret = 0; | |
958 | ||
dc0b027d | 959 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
960 | |
961 | rcu_read_lock(); | |
962 | deleg_cur = rcu_dereference(nfsi->delegation); | |
963 | if (deleg_cur == NULL) | |
964 | goto no_delegation; | |
965 | ||
966 | spin_lock(&deleg_cur->lock); | |
967 | if (nfsi->delegation != deleg_cur || | |
dc0b027d | 968 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
969 | goto no_delegation_unlock; |
970 | ||
971 | if (delegation == NULL) | |
972 | delegation = &deleg_cur->stateid; | |
973 | else if (memcmp(deleg_cur->stateid.data, delegation->data, NFS4_STATEID_SIZE) != 0) | |
974 | goto no_delegation_unlock; | |
975 | ||
b7391f44 | 976 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 977 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
978 | ret = 1; |
979 | no_delegation_unlock: | |
980 | spin_unlock(&deleg_cur->lock); | |
981 | no_delegation: | |
982 | rcu_read_unlock(); | |
983 | ||
984 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 985 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
986 | ret = 1; |
987 | } | |
988 | ||
989 | return ret; | |
990 | } | |
991 | ||
992 | ||
dc0b027d | 993 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
994 | { |
995 | struct nfs_delegation *delegation; | |
996 | ||
997 | rcu_read_lock(); | |
998 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 999 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1000 | rcu_read_unlock(); |
1001 | return; | |
1002 | } | |
1003 | rcu_read_unlock(); | |
1004 | nfs_inode_return_delegation(inode); | |
1005 | } | |
1006 | ||
6ee41268 | 1007 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1008 | { |
1009 | struct nfs4_state *state = opendata->state; | |
1010 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1011 | struct nfs_delegation *delegation; | |
dc0b027d TM |
1012 | int open_mode = opendata->o_arg.open_flags & O_EXCL; |
1013 | fmode_t fmode = opendata->o_arg.fmode; | |
aac00a8d TM |
1014 | nfs4_stateid stateid; |
1015 | int ret = -EAGAIN; | |
1016 | ||
aac00a8d | 1017 | for (;;) { |
dc0b027d | 1018 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 1019 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
1020 | if (can_open_cached(state, fmode, open_mode)) { |
1021 | update_open_stateflags(state, fmode); | |
6ee41268 | 1022 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
1023 | goto out_return_state; |
1024 | } | |
1025 | spin_unlock(&state->owner->so_lock); | |
1026 | } | |
34310430 TM |
1027 | rcu_read_lock(); |
1028 | delegation = rcu_dereference(nfsi->delegation); | |
1029 | if (delegation == NULL || | |
dc0b027d | 1030 | !can_open_delegated(delegation, fmode)) { |
34310430 | 1031 | rcu_read_unlock(); |
aac00a8d | 1032 | break; |
34310430 | 1033 | } |
aac00a8d TM |
1034 | /* Save the delegation */ |
1035 | memcpy(stateid.data, delegation->stateid.data, sizeof(stateid.data)); | |
1036 | rcu_read_unlock(); | |
af22f94a | 1037 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
1038 | if (ret != 0) |
1039 | goto out; | |
1040 | ret = -EAGAIN; | |
34310430 TM |
1041 | |
1042 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1043 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1044 | goto out_return_state; |
aac00a8d | 1045 | } |
aac00a8d TM |
1046 | out: |
1047 | return ERR_PTR(ret); | |
1048 | out_return_state: | |
1049 | atomic_inc(&state->count); | |
1050 | return state; | |
1051 | } | |
1052 | ||
24ac23ab TM |
1053 | static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) |
1054 | { | |
1055 | struct inode *inode; | |
1056 | struct nfs4_state *state = NULL; | |
003707c7 | 1057 | struct nfs_delegation *delegation; |
1b370bc2 | 1058 | int ret; |
24ac23ab | 1059 | |
aac00a8d | 1060 | if (!data->rpc_done) { |
6ee41268 | 1061 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1062 | goto out; |
1063 | } | |
1064 | ||
1b370bc2 | 1065 | ret = -EAGAIN; |
24ac23ab | 1066 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1067 | goto err; |
24ac23ab | 1068 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 1069 | ret = PTR_ERR(inode); |
03f28e3a | 1070 | if (IS_ERR(inode)) |
1b370bc2 TM |
1071 | goto err; |
1072 | ret = -ENOMEM; | |
24ac23ab TM |
1073 | state = nfs4_get_open_state(inode, data->owner); |
1074 | if (state == NULL) | |
1b370bc2 | 1075 | goto err_put_inode; |
549d6ed5 | 1076 | if (data->o_res.delegation_type != 0) { |
549d6ed5 TM |
1077 | int delegation_flags = 0; |
1078 | ||
003707c7 TM |
1079 | rcu_read_lock(); |
1080 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
1081 | if (delegation) | |
1082 | delegation_flags = delegation->flags; | |
1083 | rcu_read_unlock(); | |
15c831bf | 1084 | if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) |
549d6ed5 TM |
1085 | nfs_inode_set_delegation(state->inode, |
1086 | data->owner->so_cred, | |
1087 | &data->o_res); | |
1088 | else | |
1089 | nfs_inode_reclaim_delegation(state->inode, | |
1090 | data->owner->so_cred, | |
1091 | &data->o_res); | |
1092 | } | |
34310430 TM |
1093 | |
1094 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
dc0b027d | 1095 | data->o_arg.fmode); |
24ac23ab | 1096 | iput(inode); |
aac00a8d | 1097 | out: |
24ac23ab | 1098 | return state; |
1b370bc2 TM |
1099 | err_put_inode: |
1100 | iput(inode); | |
1101 | err: | |
1102 | return ERR_PTR(ret); | |
24ac23ab TM |
1103 | } |
1104 | ||
864472e9 TM |
1105 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1106 | { | |
1107 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1108 | struct nfs_open_context *ctx; | |
1109 | ||
1110 | spin_lock(&state->inode->i_lock); | |
1111 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1112 | if (ctx->state != state) | |
1113 | continue; | |
1114 | get_nfs_open_context(ctx); | |
1115 | spin_unlock(&state->inode->i_lock); | |
1116 | return ctx; | |
1117 | } | |
1118 | spin_unlock(&state->inode->i_lock); | |
1119 | return ERR_PTR(-ENOENT); | |
1120 | } | |
1121 | ||
6f220ed5 TM |
1122 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
1123 | { | |
1124 | struct nfs4_opendata *opendata; | |
1125 | ||
8535b2be | 1126 | opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL, GFP_NOFS); |
6f220ed5 TM |
1127 | if (opendata == NULL) |
1128 | return ERR_PTR(-ENOMEM); | |
1129 | opendata->state = state; | |
1130 | atomic_inc(&state->count); | |
1131 | return opendata; | |
1132 | } | |
1133 | ||
dc0b027d | 1134 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1135 | { |
2ced46c2 | 1136 | struct nfs4_state *newstate; |
864472e9 TM |
1137 | int ret; |
1138 | ||
dc0b027d TM |
1139 | opendata->o_arg.open_flags = 0; |
1140 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1141 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1142 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1143 | nfs4_init_opendata_res(opendata); | |
b257957e | 1144 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1145 | if (ret != 0) |
1146 | return ret; | |
2ced46c2 | 1147 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1148 | if (IS_ERR(newstate)) |
1149 | return PTR_ERR(newstate); | |
dc0b027d | 1150 | nfs4_close_state(&opendata->path, newstate, fmode); |
2ced46c2 | 1151 | *res = newstate; |
864472e9 TM |
1152 | return 0; |
1153 | } | |
1154 | ||
1155 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1156 | { | |
864472e9 | 1157 | struct nfs4_state *newstate; |
864472e9 TM |
1158 | int ret; |
1159 | ||
1160 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1161 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
1162 | smp_rmb(); |
1163 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1164 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1165 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1166 | if (ret != 0) |
1167 | return ret; | |
2ced46c2 TM |
1168 | if (newstate != state) |
1169 | return -ESTALE; | |
864472e9 TM |
1170 | } |
1171 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1172 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1173 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1174 | if (ret != 0) |
1175 | return ret; | |
2ced46c2 TM |
1176 | if (newstate != state) |
1177 | return -ESTALE; | |
864472e9 TM |
1178 | } |
1179 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1180 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1181 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1182 | if (ret != 0) |
1183 | return ret; | |
2ced46c2 TM |
1184 | if (newstate != state) |
1185 | return -ESTALE; | |
864472e9 | 1186 | } |
1ac7e2fd TM |
1187 | /* |
1188 | * We may have performed cached opens for all three recoveries. | |
1189 | * Check if we need to update the current stateid. | |
1190 | */ | |
1191 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
1192 | memcmp(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)) != 0) { | |
8bda4e4c | 1193 | write_seqlock(&state->seqlock); |
1ac7e2fd TM |
1194 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
1195 | memcpy(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)); | |
8bda4e4c | 1196 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1197 | } |
864472e9 TM |
1198 | return 0; |
1199 | } | |
1200 | ||
1da177e4 LT |
1201 | /* |
1202 | * OPEN_RECLAIM: | |
1203 | * reclaim state on the server after a reboot. | |
1da177e4 | 1204 | */ |
539cd03a | 1205 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1206 | { |
1ac7e2fd | 1207 | struct nfs_delegation *delegation; |
864472e9 | 1208 | struct nfs4_opendata *opendata; |
dc0b027d | 1209 | fmode_t delegation_type = 0; |
1da177e4 LT |
1210 | int status; |
1211 | ||
6f220ed5 TM |
1212 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1213 | if (IS_ERR(opendata)) | |
1214 | return PTR_ERR(opendata); | |
864472e9 TM |
1215 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
1216 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
1217 | rcu_read_lock(); |
1218 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1219 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1220 | delegation_type = delegation->type; |
1ac7e2fd | 1221 | rcu_read_unlock(); |
864472e9 TM |
1222 | opendata->o_arg.u.delegation_type = delegation_type; |
1223 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1224 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1225 | return status; |
1226 | } | |
1227 | ||
539cd03a | 1228 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1229 | { |
1230 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1231 | struct nfs4_exception exception = { }; | |
1232 | int err; | |
1233 | do { | |
539cd03a | 1234 | err = _nfs4_do_open_reclaim(ctx, state); |
168667c4 | 1235 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1236 | break; |
1237 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1238 | } while (exception.retry); |
1239 | return err; | |
1240 | } | |
1241 | ||
864472e9 TM |
1242 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1243 | { | |
1244 | struct nfs_open_context *ctx; | |
1245 | int ret; | |
1246 | ||
1247 | ctx = nfs4_state_find_open_context(state); | |
1248 | if (IS_ERR(ctx)) | |
1249 | return PTR_ERR(ctx); | |
539cd03a | 1250 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1251 | put_nfs_open_context(ctx); |
1252 | return ret; | |
1253 | } | |
1254 | ||
13437e12 | 1255 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 1256 | { |
e56e0b78 | 1257 | struct nfs4_opendata *opendata; |
864472e9 | 1258 | int ret; |
1da177e4 | 1259 | |
6f220ed5 TM |
1260 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1261 | if (IS_ERR(opendata)) | |
1262 | return PTR_ERR(opendata); | |
e56e0b78 | 1263 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
13437e12 | 1264 | memcpy(opendata->o_arg.u.delegation.data, stateid->data, |
e56e0b78 | 1265 | sizeof(opendata->o_arg.u.delegation.data)); |
864472e9 | 1266 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 1267 | nfs4_opendata_put(opendata); |
864472e9 | 1268 | return ret; |
1da177e4 LT |
1269 | } |
1270 | ||
13437e12 | 1271 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
1272 | { |
1273 | struct nfs4_exception exception = { }; | |
539cd03a | 1274 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
1275 | int err; |
1276 | do { | |
13437e12 | 1277 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
1278 | switch (err) { |
1279 | case 0: | |
965b5d67 TM |
1280 | case -ENOENT: |
1281 | case -ESTALE: | |
1282 | goto out; | |
bcfa49f6 RL |
1283 | case -NFS4ERR_BADSESSION: |
1284 | case -NFS4ERR_BADSLOT: | |
1285 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1286 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1287 | case -NFS4ERR_DEADSESSION: | |
0400a6b0 | 1288 | nfs4_schedule_session_recovery(server->nfs_client->cl_session); |
bcfa49f6 | 1289 | goto out; |
1da177e4 LT |
1290 | case -NFS4ERR_STALE_CLIENTID: |
1291 | case -NFS4ERR_STALE_STATEID: | |
1292 | case -NFS4ERR_EXPIRED: | |
1293 | /* Don't recall a delegation if it was lost */ | |
0400a6b0 | 1294 | nfs4_schedule_lease_recovery(server->nfs_client); |
965b5d67 TM |
1295 | goto out; |
1296 | case -ERESTARTSYS: | |
1297 | /* | |
1298 | * The show must go on: exit, but mark the | |
1299 | * stateid as needing recovery. | |
1300 | */ | |
1301 | case -NFS4ERR_ADMIN_REVOKED: | |
1302 | case -NFS4ERR_BAD_STATEID: | |
0400a6b0 | 1303 | nfs4_schedule_stateid_recovery(server, state); |
168667c4 TM |
1304 | case -EKEYEXPIRED: |
1305 | /* | |
1306 | * User RPCSEC_GSS context has expired. | |
1307 | * We cannot recover this stateid now, so | |
1308 | * skip it and allow recovery thread to | |
1309 | * proceed. | |
1310 | */ | |
965b5d67 TM |
1311 | case -ENOMEM: |
1312 | err = 0; | |
1313 | goto out; | |
1da177e4 LT |
1314 | } |
1315 | err = nfs4_handle_exception(server, err, &exception); | |
1316 | } while (exception.retry); | |
965b5d67 | 1317 | out: |
1da177e4 LT |
1318 | return err; |
1319 | } | |
1320 | ||
cdd4e68b TM |
1321 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1322 | { | |
1323 | struct nfs4_opendata *data = calldata; | |
1324 | ||
1325 | data->rpc_status = task->tk_status; | |
26e976a8 | 1326 | if (data->rpc_status == 0) { |
cdd4e68b TM |
1327 | memcpy(data->o_res.stateid.data, data->c_res.stateid.data, |
1328 | sizeof(data->o_res.stateid.data)); | |
bb22629e | 1329 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1330 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1331 | data->rpc_done = 1; |
26e976a8 | 1332 | } |
cdd4e68b TM |
1333 | } |
1334 | ||
1335 | static void nfs4_open_confirm_release(void *calldata) | |
1336 | { | |
1337 | struct nfs4_opendata *data = calldata; | |
1338 | struct nfs4_state *state = NULL; | |
1339 | ||
1340 | /* If this request hasn't been cancelled, do nothing */ | |
1341 | if (data->cancelled == 0) | |
1342 | goto out_free; | |
1343 | /* In case of error, no cleanup! */ | |
3e309914 | 1344 | if (!data->rpc_done) |
cdd4e68b | 1345 | goto out_free; |
cdd4e68b | 1346 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1347 | if (!IS_ERR(state)) |
dc0b027d | 1348 | nfs4_close_state(&data->path, state, data->o_arg.fmode); |
cdd4e68b | 1349 | out_free: |
c6d00e63 | 1350 | nfs4_opendata_put(data); |
cdd4e68b TM |
1351 | } |
1352 | ||
1353 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1354 | .rpc_call_done = nfs4_open_confirm_done, |
1355 | .rpc_release = nfs4_open_confirm_release, | |
1356 | }; | |
1357 | ||
1358 | /* | |
1359 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1360 | */ | |
1361 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1362 | { | |
1363 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1364 | struct rpc_task *task; | |
5138fde0 TM |
1365 | struct rpc_message msg = { |
1366 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1367 | .rpc_argp = &data->c_arg, | |
1368 | .rpc_resp = &data->c_res, | |
1369 | .rpc_cred = data->owner->so_cred, | |
1370 | }; | |
c970aa85 TM |
1371 | struct rpc_task_setup task_setup_data = { |
1372 | .rpc_client = server->client, | |
5138fde0 | 1373 | .rpc_message = &msg, |
c970aa85 TM |
1374 | .callback_ops = &nfs4_open_confirm_ops, |
1375 | .callback_data = data, | |
101070ca | 1376 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1377 | .flags = RPC_TASK_ASYNC, |
1378 | }; | |
1da177e4 LT |
1379 | int status; |
1380 | ||
c6d00e63 | 1381 | kref_get(&data->kref); |
3e309914 TM |
1382 | data->rpc_done = 0; |
1383 | data->rpc_status = 0; | |
5138fde0 | 1384 | data->timestamp = jiffies; |
c970aa85 | 1385 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1386 | if (IS_ERR(task)) |
cdd4e68b | 1387 | return PTR_ERR(task); |
cdd4e68b TM |
1388 | status = nfs4_wait_for_completion_rpc_task(task); |
1389 | if (status != 0) { | |
1390 | data->cancelled = 1; | |
1391 | smp_wmb(); | |
1392 | } else | |
1393 | status = data->rpc_status; | |
e6b3c4db | 1394 | rpc_put_task(task); |
1da177e4 LT |
1395 | return status; |
1396 | } | |
1397 | ||
24ac23ab | 1398 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1399 | { |
24ac23ab TM |
1400 | struct nfs4_opendata *data = calldata; |
1401 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 1402 | |
24ac23ab TM |
1403 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
1404 | return; | |
aac00a8d TM |
1405 | /* |
1406 | * Check if we still need to send an OPEN call, or if we can use | |
1407 | * a delegation instead. | |
1408 | */ | |
1409 | if (data->state != NULL) { | |
1410 | struct nfs_delegation *delegation; | |
1411 | ||
dc0b027d | 1412 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1413 | goto out_no_action; |
aac00a8d TM |
1414 | rcu_read_lock(); |
1415 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
1416 | if (delegation != NULL && | |
15c831bf | 1417 | test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) == 0) { |
aac00a8d | 1418 | rcu_read_unlock(); |
6ee41268 | 1419 | goto out_no_action; |
aac00a8d TM |
1420 | } |
1421 | rcu_read_unlock(); | |
1422 | } | |
24ac23ab | 1423 | /* Update sequence id. */ |
9f958ab8 | 1424 | data->o_arg.id = sp->so_owner_id.id; |
1f0e890d | 1425 | data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; |
6f220ed5 | 1426 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 1427 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
6f220ed5 TM |
1428 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1429 | } | |
26e976a8 | 1430 | data->timestamp = jiffies; |
035168ab | 1431 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c AA |
1432 | &data->o_arg.seq_args, |
1433 | &data->o_res.seq_res, 1, task)) | |
1434 | return; | |
5138fde0 | 1435 | rpc_call_start(task); |
6ee41268 TM |
1436 | return; |
1437 | out_no_action: | |
1438 | task->tk_action = NULL; | |
1439 | ||
24ac23ab | 1440 | } |
1da177e4 | 1441 | |
b257957e AB |
1442 | static void nfs4_recover_open_prepare(struct rpc_task *task, void *calldata) |
1443 | { | |
1444 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
1445 | nfs4_open_prepare(task, calldata); | |
1446 | } | |
1447 | ||
24ac23ab TM |
1448 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1449 | { | |
1450 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1451 | |
24ac23ab | 1452 | data->rpc_status = task->tk_status; |
d898528c | 1453 | |
14516c3a TM |
1454 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1455 | return; | |
d898528c | 1456 | |
24ac23ab TM |
1457 | if (task->tk_status == 0) { |
1458 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1459 | case S_IFREG: |
1460 | break; | |
1461 | case S_IFLNK: | |
24ac23ab | 1462 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1463 | break; |
1464 | case S_IFDIR: | |
24ac23ab | 1465 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1466 | break; |
1467 | default: | |
24ac23ab | 1468 | data->rpc_status = -ENOTDIR; |
6f926b5b | 1469 | } |
26e976a8 | 1470 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1471 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1472 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1473 | } |
3e309914 | 1474 | data->rpc_done = 1; |
24ac23ab | 1475 | } |
6f926b5b | 1476 | |
24ac23ab TM |
1477 | static void nfs4_open_release(void *calldata) |
1478 | { | |
1479 | struct nfs4_opendata *data = calldata; | |
1480 | struct nfs4_state *state = NULL; | |
1481 | ||
1482 | /* If this request hasn't been cancelled, do nothing */ | |
1483 | if (data->cancelled == 0) | |
1484 | goto out_free; | |
1485 | /* In case of error, no cleanup! */ | |
3e309914 | 1486 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1487 | goto out_free; |
1488 | /* In case we need an open_confirm, no cleanup! */ | |
1489 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1490 | goto out_free; | |
24ac23ab | 1491 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1492 | if (!IS_ERR(state)) |
dc0b027d | 1493 | nfs4_close_state(&data->path, state, data->o_arg.fmode); |
24ac23ab | 1494 | out_free: |
c6d00e63 | 1495 | nfs4_opendata_put(data); |
24ac23ab TM |
1496 | } |
1497 | ||
1498 | static const struct rpc_call_ops nfs4_open_ops = { | |
1499 | .rpc_call_prepare = nfs4_open_prepare, | |
1500 | .rpc_call_done = nfs4_open_done, | |
1501 | .rpc_release = nfs4_open_release, | |
1502 | }; | |
1503 | ||
b257957e AB |
1504 | static const struct rpc_call_ops nfs4_recover_open_ops = { |
1505 | .rpc_call_prepare = nfs4_recover_open_prepare, | |
1506 | .rpc_call_done = nfs4_open_done, | |
1507 | .rpc_release = nfs4_open_release, | |
1508 | }; | |
1509 | ||
1510 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) | |
24ac23ab TM |
1511 | { |
1512 | struct inode *dir = data->dir->d_inode; | |
1513 | struct nfs_server *server = NFS_SERVER(dir); | |
1514 | struct nfs_openargs *o_arg = &data->o_arg; | |
1515 | struct nfs_openres *o_res = &data->o_res; | |
1516 | struct rpc_task *task; | |
5138fde0 TM |
1517 | struct rpc_message msg = { |
1518 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1519 | .rpc_argp = o_arg, | |
1520 | .rpc_resp = o_res, | |
1521 | .rpc_cred = data->owner->so_cred, | |
1522 | }; | |
c970aa85 TM |
1523 | struct rpc_task_setup task_setup_data = { |
1524 | .rpc_client = server->client, | |
5138fde0 | 1525 | .rpc_message = &msg, |
c970aa85 TM |
1526 | .callback_ops = &nfs4_open_ops, |
1527 | .callback_data = data, | |
101070ca | 1528 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1529 | .flags = RPC_TASK_ASYNC, |
1530 | }; | |
24ac23ab TM |
1531 | int status; |
1532 | ||
c6d00e63 | 1533 | kref_get(&data->kref); |
3e309914 TM |
1534 | data->rpc_done = 0; |
1535 | data->rpc_status = 0; | |
2ced46c2 | 1536 | data->cancelled = 0; |
b257957e AB |
1537 | if (isrecover) |
1538 | task_setup_data.callback_ops = &nfs4_recover_open_ops; | |
c970aa85 | 1539 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1540 | if (IS_ERR(task)) |
1541 | return PTR_ERR(task); | |
1542 | status = nfs4_wait_for_completion_rpc_task(task); | |
1543 | if (status != 0) { | |
1544 | data->cancelled = 1; | |
1545 | smp_wmb(); | |
1546 | } else | |
1547 | status = data->rpc_status; | |
1548 | rpc_put_task(task); | |
1549 | ||
1550 | return status; | |
1551 | } | |
1552 | ||
1553 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1554 | { | |
1555 | struct inode *dir = data->dir->d_inode; | |
1556 | struct nfs_openres *o_res = &data->o_res; | |
1557 | int status; | |
1558 | ||
1559 | status = nfs4_run_open_task(data, 1); | |
1560 | if (status != 0 || !data->rpc_done) | |
1561 | return status; | |
1562 | ||
1563 | nfs_refresh_inode(dir, o_res->dir_attr); | |
1564 | ||
1565 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { | |
1566 | status = _nfs4_proc_open_confirm(data); | |
1567 | if (status != 0) | |
1568 | return status; | |
1569 | } | |
1570 | ||
1571 | return status; | |
1572 | } | |
1573 | ||
1574 | /* | |
1575 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1576 | */ | |
1577 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1578 | { | |
1579 | struct inode *dir = data->dir->d_inode; | |
1580 | struct nfs_server *server = NFS_SERVER(dir); | |
1581 | struct nfs_openargs *o_arg = &data->o_arg; | |
1582 | struct nfs_openres *o_res = &data->o_res; | |
1583 | int status; | |
1584 | ||
1585 | status = nfs4_run_open_task(data, 0); | |
3e309914 | 1586 | if (status != 0 || !data->rpc_done) |
24ac23ab TM |
1587 | return status; |
1588 | ||
56ae19f3 TM |
1589 | if (o_arg->open_flags & O_CREAT) { |
1590 | update_changeattr(dir, &o_res->cinfo); | |
1591 | nfs_post_op_update_inode(dir, o_res->dir_attr); | |
1592 | } else | |
1593 | nfs_refresh_inode(dir, o_res->dir_attr); | |
0df5dd4a TM |
1594 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1595 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1596 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1597 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1598 | if (status != 0) |
24ac23ab | 1599 | return status; |
1da177e4 LT |
1600 | } |
1601 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1602 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1603 | return 0; |
1da177e4 LT |
1604 | } |
1605 | ||
d83217c1 | 1606 | static int nfs4_client_recover_expired_lease(struct nfs_client *clp) |
58d9714a | 1607 | { |
a78cb57a | 1608 | unsigned int loop; |
6b30954e | 1609 | int ret; |
58d9714a | 1610 | |
a78cb57a | 1611 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { |
65de872e | 1612 | ret = nfs4_wait_clnt_recover(clp); |
6b30954e | 1613 | if (ret != 0) |
a78cb57a | 1614 | break; |
e598d843 TM |
1615 | if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) && |
1616 | !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state)) | |
6b30954e | 1617 | break; |
0400a6b0 | 1618 | nfs4_schedule_state_manager(clp); |
a78cb57a | 1619 | ret = -EIO; |
6b30954e | 1620 | } |
a78cb57a | 1621 | return ret; |
58d9714a TM |
1622 | } |
1623 | ||
d83217c1 AA |
1624 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1625 | { | |
1626 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1627 | } | |
1628 | ||
1da177e4 LT |
1629 | /* |
1630 | * OPEN_EXPIRED: | |
1631 | * reclaim state on the server after a network partition. | |
1632 | * Assumes caller holds the appropriate lock | |
1633 | */ | |
539cd03a | 1634 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1635 | { |
e56e0b78 | 1636 | struct nfs4_opendata *opendata; |
864472e9 | 1637 | int ret; |
1da177e4 | 1638 | |
6f220ed5 TM |
1639 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1640 | if (IS_ERR(opendata)) | |
1641 | return PTR_ERR(opendata); | |
864472e9 | 1642 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1643 | if (ret == -ESTALE) |
539cd03a | 1644 | d_drop(ctx->path.dentry); |
c6d00e63 | 1645 | nfs4_opendata_put(opendata); |
864472e9 | 1646 | return ret; |
1da177e4 LT |
1647 | } |
1648 | ||
a9ed2e25 | 1649 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1650 | { |
539cd03a | 1651 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1652 | struct nfs4_exception exception = { }; |
1653 | int err; | |
1654 | ||
1655 | do { | |
539cd03a | 1656 | err = _nfs4_open_expired(ctx, state); |
a9ed2e25 TM |
1657 | switch (err) { |
1658 | default: | |
1659 | goto out; | |
1660 | case -NFS4ERR_GRACE: | |
1661 | case -NFS4ERR_DELAY: | |
1662 | nfs4_handle_exception(server, err, &exception); | |
1663 | err = 0; | |
1664 | } | |
202b50dc | 1665 | } while (exception.retry); |
a9ed2e25 | 1666 | out: |
202b50dc TM |
1667 | return err; |
1668 | } | |
1669 | ||
1da177e4 LT |
1670 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1671 | { | |
1da177e4 | 1672 | struct nfs_open_context *ctx; |
864472e9 | 1673 | int ret; |
1da177e4 | 1674 | |
864472e9 TM |
1675 | ctx = nfs4_state_find_open_context(state); |
1676 | if (IS_ERR(ctx)) | |
1677 | return PTR_ERR(ctx); | |
539cd03a | 1678 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1679 | put_nfs_open_context(ctx); |
1680 | return ret; | |
1da177e4 LT |
1681 | } |
1682 | ||
aa53ed54 JL |
1683 | /* |
1684 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1685 | * fields corresponding to attributes that were used to store the verifier. | |
1686 | * Make sure we clobber those fields in the later setattr call | |
1687 | */ | |
1688 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1689 | { | |
1690 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1691 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1692 | sattr->ia_valid |= ATTR_ATIME; | |
1693 | ||
1694 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1695 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1696 | sattr->ia_valid |= ATTR_MTIME; | |
1697 | } | |
1698 | ||
1da177e4 | 1699 | /* |
24ac23ab | 1700 | * Returns a referenced nfs4_state |
1da177e4 | 1701 | */ |
dc0b027d | 1702 | static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res) |
1da177e4 LT |
1703 | { |
1704 | struct nfs4_state_owner *sp; | |
1705 | struct nfs4_state *state = NULL; | |
1706 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1707 | struct nfs4_opendata *opendata; |
aac00a8d | 1708 | int status; |
1da177e4 LT |
1709 | |
1710 | /* Protect against reboot recovery conflicts */ | |
1da177e4 LT |
1711 | status = -ENOMEM; |
1712 | if (!(sp = nfs4_get_state_owner(server, cred))) { | |
1713 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); | |
1714 | goto out_err; | |
1715 | } | |
58d9714a TM |
1716 | status = nfs4_recover_expired_lease(server); |
1717 | if (status != 0) | |
b4454fe1 | 1718 | goto err_put_state_owner; |
aac00a8d | 1719 | if (path->dentry->d_inode != NULL) |
dc0b027d | 1720 | nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode); |
58d9714a | 1721 | status = -ENOMEM; |
8535b2be | 1722 | opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr, GFP_KERNEL); |
e56e0b78 | 1723 | if (opendata == NULL) |
95d35cb4 | 1724 | goto err_put_state_owner; |
1da177e4 | 1725 | |
aac00a8d TM |
1726 | if (path->dentry->d_inode != NULL) |
1727 | opendata->state = nfs4_get_open_state(path->dentry->d_inode, sp); | |
1728 | ||
24ac23ab | 1729 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1730 | if (status != 0) |
c6d00e63 | 1731 | goto err_opendata_put; |
1da177e4 | 1732 | |
24ac23ab | 1733 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1734 | status = PTR_ERR(state); |
1735 | if (IS_ERR(state)) | |
c6d00e63 | 1736 | goto err_opendata_put; |
0df5dd4a | 1737 | if (server->caps & NFS_CAP_POSIX_LOCK) |
8e469ebd | 1738 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); |
0ab64e0e TM |
1739 | |
1740 | if (opendata->o_arg.open_flags & O_EXCL) { | |
1741 | nfs4_exclusive_attrset(opendata, sattr); | |
1742 | ||
1743 | nfs_fattr_init(opendata->o_res.f_attr); | |
1744 | status = nfs4_do_setattr(state->inode, cred, | |
1745 | opendata->o_res.f_attr, sattr, | |
1746 | state); | |
1747 | if (status == 0) | |
1748 | nfs_setattr_update_inode(state->inode, sattr); | |
1749 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
1750 | } | |
c6d00e63 | 1751 | nfs4_opendata_put(opendata); |
1da177e4 | 1752 | nfs4_put_state_owner(sp); |
1da177e4 LT |
1753 | *res = state; |
1754 | return 0; | |
c6d00e63 TM |
1755 | err_opendata_put: |
1756 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
1757 | err_put_state_owner: |
1758 | nfs4_put_state_owner(sp); | |
1da177e4 | 1759 | out_err: |
1da177e4 LT |
1760 | *res = NULL; |
1761 | return status; | |
1762 | } | |
1763 | ||
1764 | ||
dc0b027d | 1765 | static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred) |
1da177e4 LT |
1766 | { |
1767 | struct nfs4_exception exception = { }; | |
1768 | struct nfs4_state *res; | |
1769 | int status; | |
1770 | ||
1771 | do { | |
dc0b027d | 1772 | status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res); |
1da177e4 LT |
1773 | if (status == 0) |
1774 | break; | |
1775 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1776 | * book-keeping w.r.t. state-changing operations | |
1777 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1778 | * It is actually a sign of a bug on the client or on the server. | |
1779 | * | |
1780 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1781 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1782 | * have unhashed the old state_owner for us, and that we can |
1783 | * therefore safely retry using a new one. We should still warn | |
1784 | * the user though... | |
1785 | */ | |
1786 | if (status == -NFS4ERR_BAD_SEQID) { | |
6f43ddcc TM |
1787 | printk(KERN_WARNING "NFS: v4 server %s " |
1788 | " returned a bad sequence-id error!\n", | |
1789 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1790 | exception.retry = 1; |
1791 | continue; | |
1792 | } | |
550f5747 TM |
1793 | /* |
1794 | * BAD_STATEID on OPEN means that the server cancelled our | |
1795 | * state before it received the OPEN_CONFIRM. | |
1796 | * Recover by retrying the request as per the discussion | |
1797 | * on Page 181 of RFC3530. | |
1798 | */ | |
1799 | if (status == -NFS4ERR_BAD_STATEID) { | |
1800 | exception.retry = 1; | |
1801 | continue; | |
1802 | } | |
aac00a8d TM |
1803 | if (status == -EAGAIN) { |
1804 | /* We must have found a delegation */ | |
1805 | exception.retry = 1; | |
1806 | continue; | |
1807 | } | |
1da177e4 LT |
1808 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1809 | status, &exception)); | |
1810 | } while (exception.retry); | |
1811 | return res; | |
1812 | } | |
1813 | ||
659bfcd6 TM |
1814 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1815 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1816 | struct nfs4_state *state) | |
1da177e4 | 1817 | { |
3e4f6290 | 1818 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1819 | struct nfs_setattrargs arg = { |
3e4f6290 | 1820 | .fh = NFS_FH(inode), |
1da177e4 LT |
1821 | .iap = sattr, |
1822 | .server = server, | |
1823 | .bitmask = server->attr_bitmask, | |
1824 | }; | |
1825 | struct nfs_setattrres res = { | |
1826 | .fattr = fattr, | |
1827 | .server = server, | |
1828 | }; | |
1829 | struct rpc_message msg = { | |
659bfcd6 TM |
1830 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
1831 | .rpc_argp = &arg, | |
1832 | .rpc_resp = &res, | |
1833 | .rpc_cred = cred, | |
1da177e4 | 1834 | }; |
26e976a8 | 1835 | unsigned long timestamp = jiffies; |
65e4308d | 1836 | int status; |
1da177e4 | 1837 | |
0e574af1 | 1838 | nfs_fattr_init(fattr); |
1da177e4 | 1839 | |
3e4f6290 TM |
1840 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) { |
1841 | /* Use that stateid */ | |
1842 | } else if (state != NULL) { | |
77041ed9 | 1843 | nfs4_copy_stateid(&arg.stateid, state, current->files, current->tgid); |
08e9eac4 | 1844 | } else |
1da177e4 LT |
1845 | memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid)); |
1846 | ||
7c513058 | 1847 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
1848 | if (status == 0 && state != NULL) |
1849 | renew_lease(server, timestamp); | |
65e4308d | 1850 | return status; |
1da177e4 LT |
1851 | } |
1852 | ||
659bfcd6 TM |
1853 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1854 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1855 | struct nfs4_state *state) | |
1da177e4 | 1856 | { |
3e4f6290 | 1857 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
1858 | struct nfs4_exception exception = { }; |
1859 | int err; | |
1860 | do { | |
1861 | err = nfs4_handle_exception(server, | |
659bfcd6 | 1862 | _nfs4_do_setattr(inode, cred, fattr, sattr, state), |
1da177e4 LT |
1863 | &exception); |
1864 | } while (exception.retry); | |
1865 | return err; | |
1866 | } | |
1867 | ||
1868 | struct nfs4_closedata { | |
4a35bd41 | 1869 | struct path path; |
1da177e4 LT |
1870 | struct inode *inode; |
1871 | struct nfs4_state *state; | |
1872 | struct nfs_closeargs arg; | |
1873 | struct nfs_closeres res; | |
516a6af6 | 1874 | struct nfs_fattr fattr; |
26e976a8 | 1875 | unsigned long timestamp; |
f7e8917a FI |
1876 | bool roc; |
1877 | u32 roc_barrier; | |
1da177e4 LT |
1878 | }; |
1879 | ||
963d8fe5 | 1880 | static void nfs4_free_closedata(void *data) |
9512135d | 1881 | { |
963d8fe5 TM |
1882 | struct nfs4_closedata *calldata = data; |
1883 | struct nfs4_state_owner *sp = calldata->state->owner; | |
9512135d | 1884 | |
f7e8917a FI |
1885 | if (calldata->roc) |
1886 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
1887 | nfs4_put_open_state(calldata->state); |
1888 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 1889 | nfs4_put_state_owner(sp); |
31f31db1 | 1890 | path_put(&calldata->path); |
9512135d TM |
1891 | kfree(calldata); |
1892 | } | |
1893 | ||
88069f77 TM |
1894 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
1895 | fmode_t fmode) | |
1896 | { | |
1897 | spin_lock(&state->owner->so_lock); | |
1898 | if (!(fmode & FMODE_READ)) | |
1899 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1900 | if (!(fmode & FMODE_WRITE)) | |
1901 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1902 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1903 | spin_unlock(&state->owner->so_lock); | |
1904 | } | |
1905 | ||
963d8fe5 | 1906 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 1907 | { |
963d8fe5 | 1908 | struct nfs4_closedata *calldata = data; |
1da177e4 | 1909 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
1910 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
1911 | ||
14516c3a TM |
1912 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
1913 | return; | |
1da177e4 LT |
1914 | /* hmm. we are done with the inode, and in the process of freeing |
1915 | * the state_owner. we keep this around to process errors | |
1916 | */ | |
1da177e4 LT |
1917 | switch (task->tk_status) { |
1918 | case 0: | |
f7e8917a FI |
1919 | if (calldata->roc) |
1920 | pnfs_roc_set_barrier(state->inode, | |
1921 | calldata->roc_barrier); | |
45328c35 | 1922 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 1923 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
1924 | nfs4_close_clear_stateid_flags(state, |
1925 | calldata->arg.fmode); | |
1da177e4 LT |
1926 | break; |
1927 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
1928 | case -NFS4ERR_OLD_STATEID: |
1929 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 1930 | case -NFS4ERR_EXPIRED: |
dc0b027d | 1931 | if (calldata->arg.fmode == 0) |
9e33bed5 | 1932 | break; |
1da177e4 | 1933 | default: |
72211dbe TM |
1934 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
1935 | rpc_restart_call_prepare(task); | |
1da177e4 | 1936 | } |
72211dbe | 1937 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 1938 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
1da177e4 LT |
1939 | } |
1940 | ||
4ce70ada | 1941 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 1942 | { |
4ce70ada | 1943 | struct nfs4_closedata *calldata = data; |
9512135d | 1944 | struct nfs4_state *state = calldata->state; |
88069f77 | 1945 | int call_close = 0; |
9512135d | 1946 | |
963d8fe5 | 1947 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 1948 | return; |
003707c7 | 1949 | |
88069f77 TM |
1950 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
1951 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 1952 | spin_lock(&state->owner->so_lock); |
003707c7 | 1953 | /* Calculate the change in open mode */ |
e7616923 | 1954 | if (state->n_rdwr == 0) { |
003707c7 | 1955 | if (state->n_rdonly == 0) { |
88069f77 TM |
1956 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
1957 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
1958 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
1959 | } |
1960 | if (state->n_wronly == 0) { | |
88069f77 TM |
1961 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
1962 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
1963 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 1964 | } |
e7616923 | 1965 | } |
4cecb76f | 1966 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
1967 | |
1968 | if (!call_close) { | |
963d8fe5 TM |
1969 | /* Note: exit _without_ calling nfs4_close_done */ |
1970 | task->tk_action = NULL; | |
9512135d TM |
1971 | return; |
1972 | } | |
88069f77 | 1973 | |
f7e8917a | 1974 | if (calldata->arg.fmode == 0) { |
88069f77 | 1975 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a FI |
1976 | if (calldata->roc && |
1977 | pnfs_roc_drain(calldata->inode, &calldata->roc_barrier)) { | |
1978 | rpc_sleep_on(&NFS_SERVER(calldata->inode)->roc_rpcwaitq, | |
1979 | task, NULL); | |
1980 | return; | |
1981 | } | |
1982 | } | |
88069f77 | 1983 | |
516a6af6 | 1984 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 1985 | calldata->timestamp = jiffies; |
035168ab | 1986 | if (nfs4_setup_sequence(NFS_SERVER(calldata->inode), |
19ddab06 AA |
1987 | &calldata->arg.seq_args, &calldata->res.seq_res, |
1988 | 1, task)) | |
1989 | return; | |
5138fde0 | 1990 | rpc_call_start(task); |
1da177e4 LT |
1991 | } |
1992 | ||
963d8fe5 | 1993 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 1994 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
1995 | .rpc_call_done = nfs4_close_done, |
1996 | .rpc_release = nfs4_free_closedata, | |
1997 | }; | |
1998 | ||
1da177e4 LT |
1999 | /* |
2000 | * It is possible for data to be read/written from a mem-mapped file | |
2001 | * after the sys_close call (which hits the vfs layer as a flush). | |
2002 | * This means that we can't safely call nfsv4 close on a file until | |
2003 | * the inode is cleared. This in turn means that we are not good | |
2004 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2005 | * share state even when we are done with one of the three share | |
2006 | * stateid's in the inode. | |
2007 | * | |
2008 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2009 | */ | |
f7e8917a | 2010 | int nfs4_do_close(struct path *path, struct nfs4_state *state, gfp_t gfp_mask, int wait, bool roc) |
1da177e4 | 2011 | { |
4a35bd41 | 2012 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2013 | struct nfs4_closedata *calldata; |
b39e625b TM |
2014 | struct nfs4_state_owner *sp = state->owner; |
2015 | struct rpc_task *task; | |
5138fde0 TM |
2016 | struct rpc_message msg = { |
2017 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2018 | .rpc_cred = state->owner->so_cred, | |
2019 | }; | |
c970aa85 TM |
2020 | struct rpc_task_setup task_setup_data = { |
2021 | .rpc_client = server->client, | |
5138fde0 | 2022 | .rpc_message = &msg, |
c970aa85 | 2023 | .callback_ops = &nfs4_close_ops, |
101070ca | 2024 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2025 | .flags = RPC_TASK_ASYNC, |
2026 | }; | |
9512135d | 2027 | int status = -ENOMEM; |
1da177e4 | 2028 | |
8535b2be | 2029 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2030 | if (calldata == NULL) |
9512135d | 2031 | goto out; |
4a35bd41 | 2032 | calldata->inode = state->inode; |
1da177e4 | 2033 | calldata->state = state; |
4a35bd41 | 2034 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2035 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2036 | /* Serialization for the sequence id */ |
8535b2be | 2037 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2038 | if (calldata->arg.seqid == NULL) |
2039 | goto out_free_calldata; | |
dc0b027d | 2040 | calldata->arg.fmode = 0; |
a65318bf | 2041 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2042 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2043 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2044 | calldata->res.server = server; |
f7e8917a | 2045 | calldata->roc = roc; |
f6948697 AV |
2046 | path_get(path); |
2047 | calldata->path = *path; | |
9512135d | 2048 | |
1174dd1f TM |
2049 | msg.rpc_argp = &calldata->arg; |
2050 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2051 | task_setup_data.callback_data = calldata; |
2052 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2053 | if (IS_ERR(task)) |
2054 | return PTR_ERR(task); | |
a49c3c77 TM |
2055 | status = 0; |
2056 | if (wait) | |
2057 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2058 | rpc_put_task(task); |
a49c3c77 | 2059 | return status; |
9512135d TM |
2060 | out_free_calldata: |
2061 | kfree(calldata); | |
2062 | out: | |
f7e8917a FI |
2063 | if (roc) |
2064 | pnfs_roc_release(state->inode); | |
b39e625b TM |
2065 | nfs4_put_open_state(state); |
2066 | nfs4_put_state_owner(sp); | |
9512135d | 2067 | return status; |
1da177e4 LT |
2068 | } |
2069 | ||
2b484297 | 2070 | static struct inode * |
cd9a1c0e | 2071 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2072 | { |
1da177e4 | 2073 | struct nfs4_state *state; |
1da177e4 | 2074 | |
565277f6 | 2075 | /* Protect against concurrent sillydeletes */ |
cd9a1c0e | 2076 | state = nfs4_do_open(dir, &ctx->path, ctx->mode, open_flags, attr, ctx->cred); |
f46e0bd3 TM |
2077 | if (IS_ERR(state)) |
2078 | return ERR_CAST(state); | |
cd9a1c0e | 2079 | ctx->state = state; |
f46e0bd3 | 2080 | return igrab(state->inode); |
1da177e4 LT |
2081 | } |
2082 | ||
1185a552 | 2083 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2084 | { |
2085 | if (ctx->state == NULL) | |
2086 | return; | |
2087 | if (is_sync) | |
2088 | nfs4_close_sync(&ctx->path, ctx->state, ctx->mode); | |
2089 | else | |
2090 | nfs4_close_state(&ctx->path, ctx->state, ctx->mode); | |
2091 | } | |
1da177e4 LT |
2092 | |
2093 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2094 | { | |
43652ad5 BH |
2095 | struct nfs4_server_caps_arg args = { |
2096 | .fhandle = fhandle, | |
2097 | }; | |
1da177e4 LT |
2098 | struct nfs4_server_caps_res res = {}; |
2099 | struct rpc_message msg = { | |
2100 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2101 | .rpc_argp = &args, |
1da177e4 LT |
2102 | .rpc_resp = &res, |
2103 | }; | |
2104 | int status; | |
2105 | ||
7c513058 | 2106 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2107 | if (status == 0) { |
2108 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2109 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2110 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2111 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2112 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2113 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2114 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2115 | server->caps |= NFS_CAP_ACLS; | |
2116 | if (res.has_links != 0) | |
2117 | server->caps |= NFS_CAP_HARDLINKS; | |
2118 | if (res.has_symlinks != 0) | |
2119 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2120 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2121 | server->caps |= NFS_CAP_FILEID; | |
2122 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2123 | server->caps |= NFS_CAP_MODE; | |
2124 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2125 | server->caps |= NFS_CAP_NLINK; | |
2126 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2127 | server->caps |= NFS_CAP_OWNER; | |
2128 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2129 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2130 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2131 | server->caps |= NFS_CAP_ATIME; | |
2132 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2133 | server->caps |= NFS_CAP_CTIME; | |
2134 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2135 | server->caps |= NFS_CAP_MTIME; | |
2136 | ||
a65318bf TM |
2137 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2138 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2139 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 LT |
2140 | server->acl_bitmask = res.acl_bitmask; |
2141 | } | |
cccef3b9 | 2142 | |
1da177e4 LT |
2143 | return status; |
2144 | } | |
2145 | ||
55a97593 | 2146 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2147 | { |
2148 | struct nfs4_exception exception = { }; | |
2149 | int err; | |
2150 | do { | |
2151 | err = nfs4_handle_exception(server, | |
2152 | _nfs4_server_capabilities(server, fhandle), | |
2153 | &exception); | |
2154 | } while (exception.retry); | |
2155 | return err; | |
2156 | } | |
2157 | ||
2158 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2159 | struct nfs_fsinfo *info) | |
2160 | { | |
1da177e4 LT |
2161 | struct nfs4_lookup_root_arg args = { |
2162 | .bitmask = nfs4_fattr_bitmap, | |
2163 | }; | |
2164 | struct nfs4_lookup_res res = { | |
2165 | .server = server, | |
0e574af1 | 2166 | .fattr = info->fattr, |
1da177e4 LT |
2167 | .fh = fhandle, |
2168 | }; | |
2169 | struct rpc_message msg = { | |
2170 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2171 | .rpc_argp = &args, | |
2172 | .rpc_resp = &res, | |
2173 | }; | |
008f55d0 | 2174 | |
0e574af1 | 2175 | nfs_fattr_init(info->fattr); |
7c513058 | 2176 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2177 | } |
2178 | ||
2179 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2180 | struct nfs_fsinfo *info) | |
2181 | { | |
2182 | struct nfs4_exception exception = { }; | |
2183 | int err; | |
2184 | do { | |
2185 | err = nfs4_handle_exception(server, | |
2186 | _nfs4_lookup_root(server, fhandle, info), | |
2187 | &exception); | |
2188 | } while (exception.retry); | |
2189 | return err; | |
2190 | } | |
2191 | ||
54ceac45 DH |
2192 | /* |
2193 | * get the file handle for the "/" directory on the server | |
2194 | */ | |
1da177e4 | 2195 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2196 | struct nfs_fsinfo *info) |
1da177e4 | 2197 | { |
1da177e4 LT |
2198 | int status; |
2199 | ||
1da177e4 | 2200 | status = nfs4_lookup_root(server, fhandle, info); |
1da177e4 LT |
2201 | if (status == 0) |
2202 | status = nfs4_server_capabilities(server, fhandle); | |
2203 | if (status == 0) | |
2204 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2205 | return nfs4_map_errors(status); |
1da177e4 LT |
2206 | } |
2207 | ||
6b97fd3d MN |
2208 | /* |
2209 | * Get locations and (maybe) other attributes of a referral. | |
2210 | * Note that we'll actually follow the referral later when | |
2211 | * we detect fsid mismatch in inode revalidation | |
2212 | */ | |
56659e99 | 2213 | static int nfs4_get_referral(struct inode *dir, const struct qstr *name, struct nfs_fattr *fattr, struct nfs_fh *fhandle) |
6b97fd3d MN |
2214 | { |
2215 | int status = -ENOMEM; | |
2216 | struct page *page = NULL; | |
2217 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2218 | |
2219 | page = alloc_page(GFP_KERNEL); | |
2220 | if (page == NULL) | |
2221 | goto out; | |
2222 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2223 | if (locations == NULL) | |
2224 | goto out; | |
2225 | ||
c228fd3a | 2226 | status = nfs4_proc_fs_locations(dir, name, locations, page); |
6b97fd3d MN |
2227 | if (status != 0) |
2228 | goto out; | |
2229 | /* Make sure server returned a different fsid for the referral */ | |
2230 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
3110ff80 | 2231 | dprintk("%s: server did not return a different fsid for a referral at %s\n", __func__, name->name); |
6b97fd3d MN |
2232 | status = -EIO; |
2233 | goto out; | |
2234 | } | |
2235 | ||
2236 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); | |
2237 | fattr->valid |= NFS_ATTR_FATTR_V4_REFERRAL; | |
2238 | if (!fattr->mode) | |
2239 | fattr->mode = S_IFDIR; | |
2240 | memset(fhandle, 0, sizeof(struct nfs_fh)); | |
2241 | out: | |
2242 | if (page) | |
2243 | __free_page(page); | |
5d7ca35a | 2244 | kfree(locations); |
6b97fd3d MN |
2245 | return status; |
2246 | } | |
2247 | ||
1da177e4 LT |
2248 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2249 | { | |
2250 | struct nfs4_getattr_arg args = { | |
2251 | .fh = fhandle, | |
2252 | .bitmask = server->attr_bitmask, | |
2253 | }; | |
2254 | struct nfs4_getattr_res res = { | |
2255 | .fattr = fattr, | |
2256 | .server = server, | |
2257 | }; | |
2258 | struct rpc_message msg = { | |
2259 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2260 | .rpc_argp = &args, | |
2261 | .rpc_resp = &res, | |
2262 | }; | |
2263 | ||
0e574af1 | 2264 | nfs_fattr_init(fattr); |
7c513058 | 2265 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2266 | } |
2267 | ||
2268 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2269 | { | |
2270 | struct nfs4_exception exception = { }; | |
2271 | int err; | |
2272 | do { | |
2273 | err = nfs4_handle_exception(server, | |
2274 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2275 | &exception); | |
2276 | } while (exception.retry); | |
2277 | return err; | |
2278 | } | |
2279 | ||
2280 | /* | |
2281 | * The file is not closed if it is opened due to the a request to change | |
2282 | * the size of the file. The open call will not be needed once the | |
2283 | * VFS layer lookup-intents are implemented. | |
2284 | * | |
2285 | * Close is called when the inode is destroyed. | |
2286 | * If we haven't opened the file for O_WRONLY, we | |
2287 | * need to in the size_change case to obtain a stateid. | |
2288 | * | |
2289 | * Got race? | |
2290 | * Because OPEN is always done by name in nfsv4, it is | |
2291 | * possible that we opened a different file by the same | |
2292 | * name. We can recognize this race condition, but we | |
2293 | * can't do anything about it besides returning an error. | |
2294 | * | |
2295 | * This will be fixed with VFS changes (lookup-intent). | |
2296 | */ | |
2297 | static int | |
2298 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2299 | struct iattr *sattr) | |
2300 | { | |
08e9eac4 | 2301 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2302 | struct rpc_cred *cred = NULL; |
d530838b | 2303 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2304 | int status; |
2305 | ||
0e574af1 | 2306 | nfs_fattr_init(fattr); |
1da177e4 | 2307 | |
d530838b | 2308 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2309 | if (sattr->ia_valid & ATTR_FILE) { |
2310 | struct nfs_open_context *ctx; | |
2311 | ||
2312 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2313 | if (ctx) { |
2314 | cred = ctx->cred; | |
2315 | state = ctx->state; | |
2316 | } | |
659bfcd6 | 2317 | } |
08e9eac4 | 2318 | |
659bfcd6 | 2319 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2320 | if (status == 0) |
2321 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2322 | return status; |
2323 | } | |
2324 | ||
7c513058 BS |
2325 | static int _nfs4_proc_lookupfh(struct rpc_clnt *clnt, struct nfs_server *server, |
2326 | const struct nfs_fh *dirfh, const struct qstr *name, | |
2327 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2b3de441 DH |
2328 | { |
2329 | int status; | |
2330 | struct nfs4_lookup_arg args = { | |
2331 | .bitmask = server->attr_bitmask, | |
2332 | .dir_fh = dirfh, | |
2333 | .name = name, | |
2334 | }; | |
2335 | struct nfs4_lookup_res res = { | |
2336 | .server = server, | |
2337 | .fattr = fattr, | |
2338 | .fh = fhandle, | |
2339 | }; | |
2340 | struct rpc_message msg = { | |
2341 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2342 | .rpc_argp = &args, | |
2343 | .rpc_resp = &res, | |
2344 | }; | |
2345 | ||
2346 | nfs_fattr_init(fattr); | |
2347 | ||
2348 | dprintk("NFS call lookupfh %s\n", name->name); | |
7c513058 | 2349 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
2b3de441 | 2350 | dprintk("NFS reply lookupfh: %d\n", status); |
2b3de441 DH |
2351 | return status; |
2352 | } | |
2353 | ||
2354 | static int nfs4_proc_lookupfh(struct nfs_server *server, struct nfs_fh *dirfh, | |
2355 | struct qstr *name, struct nfs_fh *fhandle, | |
2356 | struct nfs_fattr *fattr) | |
2357 | { | |
2358 | struct nfs4_exception exception = { }; | |
2359 | int err; | |
2360 | do { | |
7c513058 | 2361 | err = _nfs4_proc_lookupfh(server->client, server, dirfh, name, fhandle, fattr); |
4e56e082 TM |
2362 | /* FIXME: !!!! */ |
2363 | if (err == -NFS4ERR_MOVED) { | |
2364 | err = -EREMOTE; | |
2365 | break; | |
2366 | } | |
2367 | err = nfs4_handle_exception(server, err, &exception); | |
2b3de441 DH |
2368 | } while (exception.retry); |
2369 | return err; | |
2370 | } | |
2371 | ||
7c513058 BS |
2372 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
2373 | const struct qstr *name, struct nfs_fh *fhandle, | |
2374 | struct nfs_fattr *fattr) | |
1da177e4 | 2375 | { |
4e56e082 | 2376 | int status; |
1da177e4 LT |
2377 | |
2378 | dprintk("NFS call lookup %s\n", name->name); | |
7c513058 | 2379 | status = _nfs4_proc_lookupfh(clnt, NFS_SERVER(dir), NFS_FH(dir), name, fhandle, fattr); |
6b97fd3d MN |
2380 | if (status == -NFS4ERR_MOVED) |
2381 | status = nfs4_get_referral(dir, name, fattr, fhandle); | |
1da177e4 LT |
2382 | dprintk("NFS reply lookup: %d\n", status); |
2383 | return status; | |
2384 | } | |
2385 | ||
7c513058 BS |
2386 | static int nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, struct qstr *name, |
2387 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
1da177e4 LT |
2388 | { |
2389 | struct nfs4_exception exception = { }; | |
2390 | int err; | |
2391 | do { | |
2392 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
7c513058 | 2393 | _nfs4_proc_lookup(clnt, dir, name, fhandle, fattr), |
1da177e4 LT |
2394 | &exception); |
2395 | } while (exception.retry); | |
2396 | return err; | |
2397 | } | |
2398 | ||
2399 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2400 | { | |
76b32999 | 2401 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2402 | struct nfs4_accessargs args = { |
2403 | .fh = NFS_FH(inode), | |
76b32999 TM |
2404 | .bitmask = server->attr_bitmask, |
2405 | }; | |
2406 | struct nfs4_accessres res = { | |
2407 | .server = server, | |
1da177e4 | 2408 | }; |
1da177e4 LT |
2409 | struct rpc_message msg = { |
2410 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2411 | .rpc_argp = &args, | |
2412 | .rpc_resp = &res, | |
2413 | .rpc_cred = entry->cred, | |
2414 | }; | |
2415 | int mode = entry->mask; | |
2416 | int status; | |
2417 | ||
2418 | /* | |
2419 | * Determine which access bits we want to ask for... | |
2420 | */ | |
2421 | if (mode & MAY_READ) | |
2422 | args.access |= NFS4_ACCESS_READ; | |
2423 | if (S_ISDIR(inode->i_mode)) { | |
2424 | if (mode & MAY_WRITE) | |
2425 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2426 | if (mode & MAY_EXEC) | |
2427 | args.access |= NFS4_ACCESS_LOOKUP; | |
2428 | } else { | |
2429 | if (mode & MAY_WRITE) | |
2430 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2431 | if (mode & MAY_EXEC) | |
2432 | args.access |= NFS4_ACCESS_EXECUTE; | |
2433 | } | |
c407d41a TM |
2434 | |
2435 | res.fattr = nfs_alloc_fattr(); | |
2436 | if (res.fattr == NULL) | |
2437 | return -ENOMEM; | |
2438 | ||
7c513058 | 2439 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2440 | if (!status) { |
2441 | entry->mask = 0; | |
2442 | if (res.access & NFS4_ACCESS_READ) | |
2443 | entry->mask |= MAY_READ; | |
2444 | if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE)) | |
2445 | entry->mask |= MAY_WRITE; | |
2446 | if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE)) | |
2447 | entry->mask |= MAY_EXEC; | |
c407d41a | 2448 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2449 | } |
c407d41a | 2450 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2451 | return status; |
2452 | } | |
2453 | ||
2454 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2455 | { | |
2456 | struct nfs4_exception exception = { }; | |
2457 | int err; | |
2458 | do { | |
2459 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2460 | _nfs4_proc_access(inode, entry), | |
2461 | &exception); | |
2462 | } while (exception.retry); | |
2463 | return err; | |
2464 | } | |
2465 | ||
2466 | /* | |
2467 | * TODO: For the time being, we don't try to get any attributes | |
2468 | * along with any of the zero-copy operations READ, READDIR, | |
2469 | * READLINK, WRITE. | |
2470 | * | |
2471 | * In the case of the first three, we want to put the GETATTR | |
2472 | * after the read-type operation -- this is because it is hard | |
2473 | * to predict the length of a GETATTR response in v4, and thus | |
2474 | * align the READ data correctly. This means that the GETATTR | |
2475 | * may end up partially falling into the page cache, and we should | |
2476 | * shift it into the 'tail' of the xdr_buf before processing. | |
2477 | * To do this efficiently, we need to know the total length | |
2478 | * of data received, which doesn't seem to be available outside | |
2479 | * of the RPC layer. | |
2480 | * | |
2481 | * In the case of WRITE, we also want to put the GETATTR after | |
2482 | * the operation -- in this case because we want to make sure | |
2483 | * we get the post-operation mtime and size. This means that | |
2484 | * we can't use xdr_encode_pages() as written: we need a variant | |
2485 | * of it which would leave room in the 'tail' iovec. | |
2486 | * | |
2487 | * Both of these changes to the XDR layer would in fact be quite | |
2488 | * minor, but I decided to leave them for a subsequent patch. | |
2489 | */ | |
2490 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2491 | unsigned int pgbase, unsigned int pglen) | |
2492 | { | |
2493 | struct nfs4_readlink args = { | |
2494 | .fh = NFS_FH(inode), | |
2495 | .pgbase = pgbase, | |
2496 | .pglen = pglen, | |
2497 | .pages = &page, | |
2498 | }; | |
f50c7000 | 2499 | struct nfs4_readlink_res res; |
1da177e4 LT |
2500 | struct rpc_message msg = { |
2501 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2502 | .rpc_argp = &args, | |
f50c7000 | 2503 | .rpc_resp = &res, |
1da177e4 LT |
2504 | }; |
2505 | ||
7c513058 | 2506 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2507 | } |
2508 | ||
2509 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2510 | unsigned int pgbase, unsigned int pglen) | |
2511 | { | |
2512 | struct nfs4_exception exception = { }; | |
2513 | int err; | |
2514 | do { | |
2515 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2516 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2517 | &exception); | |
2518 | } while (exception.retry); | |
2519 | return err; | |
2520 | } | |
2521 | ||
1da177e4 LT |
2522 | /* |
2523 | * Got race? | |
2524 | * We will need to arrange for the VFS layer to provide an atomic open. | |
2525 | * Until then, this create/open method is prone to inefficiency and race | |
2526 | * conditions due to the lookup, create, and open VFS calls from sys_open() | |
2527 | * placed on the wire. | |
2528 | * | |
2529 | * Given the above sorry state of affairs, I'm simply sending an OPEN. | |
2530 | * The file will be opened again in the subsequent VFS open call | |
2531 | * (nfs4_proc_file_open). | |
2532 | * | |
2533 | * The open for read will just hang around to be used by any process that | |
2534 | * opens the file O_RDONLY. This will all be resolved with the VFS changes. | |
2535 | */ | |
2536 | ||
2537 | static int | |
2538 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
c0204fd2 | 2539 | int flags, struct nfs_open_context *ctx) |
1da177e4 | 2540 | { |
c0204fd2 | 2541 | struct path my_path = { |
ad389da7 TM |
2542 | .dentry = dentry, |
2543 | }; | |
c0204fd2 | 2544 | struct path *path = &my_path; |
1da177e4 | 2545 | struct nfs4_state *state; |
c0204fd2 TM |
2546 | struct rpc_cred *cred = NULL; |
2547 | fmode_t fmode = 0; | |
1da177e4 LT |
2548 | int status = 0; |
2549 | ||
c0204fd2 TM |
2550 | if (ctx != NULL) { |
2551 | cred = ctx->cred; | |
2552 | path = &ctx->path; | |
2553 | fmode = ctx->mode; | |
1da177e4 | 2554 | } |
a8a5da99 | 2555 | sattr->ia_mode &= ~current_umask(); |
c0204fd2 | 2556 | state = nfs4_do_open(dir, path, fmode, flags, sattr, cred); |
d4d9cdcb | 2557 | d_drop(dentry); |
1da177e4 LT |
2558 | if (IS_ERR(state)) { |
2559 | status = PTR_ERR(state); | |
c0204fd2 | 2560 | goto out; |
1da177e4 | 2561 | } |
d4d9cdcb | 2562 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2563 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
c0204fd2 TM |
2564 | if (ctx != NULL) |
2565 | ctx->state = state; | |
02a913a7 | 2566 | else |
c0204fd2 | 2567 | nfs4_close_sync(path, state, fmode); |
1da177e4 LT |
2568 | out: |
2569 | return status; | |
2570 | } | |
2571 | ||
2572 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2573 | { | |
16e42959 | 2574 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2575 | struct nfs_removeargs args = { |
1da177e4 | 2576 | .fh = NFS_FH(dir), |
4fdc17b2 TM |
2577 | .name.len = name->len, |
2578 | .name.name = name->name, | |
16e42959 TM |
2579 | .bitmask = server->attr_bitmask, |
2580 | }; | |
4fdc17b2 | 2581 | struct nfs_removeres res = { |
16e42959 | 2582 | .server = server, |
1da177e4 | 2583 | }; |
1da177e4 | 2584 | struct rpc_message msg = { |
4fdc17b2 TM |
2585 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
2586 | .rpc_argp = &args, | |
2587 | .rpc_resp = &res, | |
1da177e4 | 2588 | }; |
d346890b TM |
2589 | int status = -ENOMEM; |
2590 | ||
2591 | res.dir_attr = nfs_alloc_fattr(); | |
2592 | if (res.dir_attr == NULL) | |
2593 | goto out; | |
1da177e4 | 2594 | |
7c513058 | 2595 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
16e42959 TM |
2596 | if (status == 0) { |
2597 | update_changeattr(dir, &res.cinfo); | |
d346890b | 2598 | nfs_post_op_update_inode(dir, res.dir_attr); |
16e42959 | 2599 | } |
d346890b TM |
2600 | nfs_free_fattr(res.dir_attr); |
2601 | out: | |
1da177e4 LT |
2602 | return status; |
2603 | } | |
2604 | ||
2605 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2606 | { | |
2607 | struct nfs4_exception exception = { }; | |
2608 | int err; | |
2609 | do { | |
2610 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2611 | _nfs4_proc_remove(dir, name), | |
2612 | &exception); | |
2613 | } while (exception.retry); | |
2614 | return err; | |
2615 | } | |
2616 | ||
e4eff1a6 | 2617 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 2618 | { |
e4eff1a6 TM |
2619 | struct nfs_server *server = NFS_SERVER(dir); |
2620 | struct nfs_removeargs *args = msg->rpc_argp; | |
2621 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 2622 | |
a65318bf | 2623 | args->bitmask = server->cache_consistency_bitmask; |
e4eff1a6 | 2624 | res->server = server; |
dfb4f309 | 2625 | res->seq_res.sr_slot = NULL; |
1da177e4 | 2626 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
1da177e4 LT |
2627 | } |
2628 | ||
e4eff1a6 | 2629 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 2630 | { |
e4eff1a6 TM |
2631 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
2632 | ||
14516c3a TM |
2633 | if (!nfs4_sequence_done(task, &res->seq_res)) |
2634 | return 0; | |
9e33bed5 | 2635 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
2636 | return 0; |
2637 | update_changeattr(dir, &res->cinfo); | |
d346890b | 2638 | nfs_post_op_update_inode(dir, res->dir_attr); |
e4eff1a6 | 2639 | return 1; |
1da177e4 LT |
2640 | } |
2641 | ||
d3d4152a JL |
2642 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
2643 | { | |
2644 | struct nfs_server *server = NFS_SERVER(dir); | |
2645 | struct nfs_renameargs *arg = msg->rpc_argp; | |
2646 | struct nfs_renameres *res = msg->rpc_resp; | |
2647 | ||
2648 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
2649 | arg->bitmask = server->attr_bitmask; | |
2650 | res->server = server; | |
2651 | } | |
2652 | ||
2653 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
2654 | struct inode *new_dir) | |
2655 | { | |
2656 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
2657 | ||
2658 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
2659 | return 0; | |
2660 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
2661 | return 0; | |
2662 | ||
2663 | update_changeattr(old_dir, &res->old_cinfo); | |
2664 | nfs_post_op_update_inode(old_dir, res->old_fattr); | |
2665 | update_changeattr(new_dir, &res->new_cinfo); | |
2666 | nfs_post_op_update_inode(new_dir, res->new_fattr); | |
2667 | return 1; | |
2668 | } | |
2669 | ||
1da177e4 LT |
2670 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
2671 | struct inode *new_dir, struct qstr *new_name) | |
2672 | { | |
6caf2c82 | 2673 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 2674 | struct nfs_renameargs arg = { |
1da177e4 LT |
2675 | .old_dir = NFS_FH(old_dir), |
2676 | .new_dir = NFS_FH(new_dir), | |
2677 | .old_name = old_name, | |
2678 | .new_name = new_name, | |
6caf2c82 TM |
2679 | .bitmask = server->attr_bitmask, |
2680 | }; | |
e8582a8b | 2681 | struct nfs_renameres res = { |
6caf2c82 | 2682 | .server = server, |
1da177e4 | 2683 | }; |
1da177e4 LT |
2684 | struct rpc_message msg = { |
2685 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
2686 | .rpc_argp = &arg, | |
2687 | .rpc_resp = &res, | |
2688 | }; | |
011fff72 | 2689 | int status = -ENOMEM; |
1da177e4 | 2690 | |
011fff72 TM |
2691 | res.old_fattr = nfs_alloc_fattr(); |
2692 | res.new_fattr = nfs_alloc_fattr(); | |
2693 | if (res.old_fattr == NULL || res.new_fattr == NULL) | |
2694 | goto out; | |
1da177e4 | 2695 | |
7c513058 | 2696 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
2697 | if (!status) { |
2698 | update_changeattr(old_dir, &res.old_cinfo); | |
6caf2c82 | 2699 | nfs_post_op_update_inode(old_dir, res.old_fattr); |
1da177e4 | 2700 | update_changeattr(new_dir, &res.new_cinfo); |
6caf2c82 | 2701 | nfs_post_op_update_inode(new_dir, res.new_fattr); |
1da177e4 | 2702 | } |
011fff72 TM |
2703 | out: |
2704 | nfs_free_fattr(res.new_fattr); | |
2705 | nfs_free_fattr(res.old_fattr); | |
1da177e4 LT |
2706 | return status; |
2707 | } | |
2708 | ||
2709 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2710 | struct inode *new_dir, struct qstr *new_name) | |
2711 | { | |
2712 | struct nfs4_exception exception = { }; | |
2713 | int err; | |
2714 | do { | |
2715 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
2716 | _nfs4_proc_rename(old_dir, old_name, | |
2717 | new_dir, new_name), | |
2718 | &exception); | |
2719 | } while (exception.retry); | |
2720 | return err; | |
2721 | } | |
2722 | ||
2723 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2724 | { | |
91ba2eee | 2725 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2726 | struct nfs4_link_arg arg = { |
2727 | .fh = NFS_FH(inode), | |
2728 | .dir_fh = NFS_FH(dir), | |
2729 | .name = name, | |
91ba2eee TM |
2730 | .bitmask = server->attr_bitmask, |
2731 | }; | |
91ba2eee TM |
2732 | struct nfs4_link_res res = { |
2733 | .server = server, | |
1da177e4 | 2734 | }; |
1da177e4 LT |
2735 | struct rpc_message msg = { |
2736 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
2737 | .rpc_argp = &arg, | |
91ba2eee | 2738 | .rpc_resp = &res, |
1da177e4 | 2739 | }; |
136f2627 TM |
2740 | int status = -ENOMEM; |
2741 | ||
2742 | res.fattr = nfs_alloc_fattr(); | |
2743 | res.dir_attr = nfs_alloc_fattr(); | |
2744 | if (res.fattr == NULL || res.dir_attr == NULL) | |
2745 | goto out; | |
1da177e4 | 2746 | |
7c513058 | 2747 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
2748 | if (!status) { |
2749 | update_changeattr(dir, &res.cinfo); | |
2750 | nfs_post_op_update_inode(dir, res.dir_attr); | |
73a3d07c | 2751 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 2752 | } |
136f2627 TM |
2753 | out: |
2754 | nfs_free_fattr(res.dir_attr); | |
2755 | nfs_free_fattr(res.fattr); | |
1da177e4 LT |
2756 | return status; |
2757 | } | |
2758 | ||
2759 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2760 | { | |
2761 | struct nfs4_exception exception = { }; | |
2762 | int err; | |
2763 | do { | |
2764 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2765 | _nfs4_proc_link(inode, dir, name), | |
2766 | &exception); | |
2767 | } while (exception.retry); | |
2768 | return err; | |
2769 | } | |
2770 | ||
57dc9a57 TM |
2771 | struct nfs4_createdata { |
2772 | struct rpc_message msg; | |
2773 | struct nfs4_create_arg arg; | |
2774 | struct nfs4_create_res res; | |
2775 | struct nfs_fh fh; | |
2776 | struct nfs_fattr fattr; | |
2777 | struct nfs_fattr dir_fattr; | |
2778 | }; | |
2779 | ||
2780 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
2781 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
2782 | { | |
2783 | struct nfs4_createdata *data; | |
2784 | ||
2785 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
2786 | if (data != NULL) { | |
2787 | struct nfs_server *server = NFS_SERVER(dir); | |
2788 | ||
2789 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
2790 | data->msg.rpc_argp = &data->arg; | |
2791 | data->msg.rpc_resp = &data->res; | |
2792 | data->arg.dir_fh = NFS_FH(dir); | |
2793 | data->arg.server = server; | |
2794 | data->arg.name = name; | |
2795 | data->arg.attrs = sattr; | |
2796 | data->arg.ftype = ftype; | |
2797 | data->arg.bitmask = server->attr_bitmask; | |
2798 | data->res.server = server; | |
2799 | data->res.fh = &data->fh; | |
2800 | data->res.fattr = &data->fattr; | |
2801 | data->res.dir_fattr = &data->dir_fattr; | |
2802 | nfs_fattr_init(data->res.fattr); | |
2803 | nfs_fattr_init(data->res.dir_fattr); | |
2804 | } | |
2805 | return data; | |
2806 | } | |
2807 | ||
2808 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
2809 | { | |
7c513058 | 2810 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 2811 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
2812 | if (status == 0) { |
2813 | update_changeattr(dir, &data->res.dir_cinfo); | |
2814 | nfs_post_op_update_inode(dir, data->res.dir_fattr); | |
2815 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); | |
2816 | } | |
2817 | return status; | |
2818 | } | |
2819 | ||
2820 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
2821 | { | |
2822 | kfree(data); | |
2823 | } | |
2824 | ||
4f390c15 | 2825 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2826 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 2827 | { |
57dc9a57 TM |
2828 | struct nfs4_createdata *data; |
2829 | int status = -ENAMETOOLONG; | |
1da177e4 | 2830 | |
94a6d753 | 2831 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 2832 | goto out; |
4f390c15 | 2833 | |
57dc9a57 TM |
2834 | status = -ENOMEM; |
2835 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
2836 | if (data == NULL) | |
2837 | goto out; | |
2838 | ||
2839 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
2840 | data->arg.u.symlink.pages = &page; | |
2841 | data->arg.u.symlink.len = len; | |
1da177e4 | 2842 | |
57dc9a57 TM |
2843 | status = nfs4_do_create(dir, dentry, data); |
2844 | ||
2845 | nfs4_free_createdata(data); | |
2846 | out: | |
1da177e4 LT |
2847 | return status; |
2848 | } | |
2849 | ||
4f390c15 | 2850 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2851 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
2852 | { |
2853 | struct nfs4_exception exception = { }; | |
2854 | int err; | |
2855 | do { | |
2856 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
2857 | _nfs4_proc_symlink(dir, dentry, page, |
2858 | len, sattr), | |
1da177e4 LT |
2859 | &exception); |
2860 | } while (exception.retry); | |
2861 | return err; | |
2862 | } | |
2863 | ||
2864 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2865 | struct iattr *sattr) | |
2866 | { | |
57dc9a57 TM |
2867 | struct nfs4_createdata *data; |
2868 | int status = -ENOMEM; | |
1da177e4 | 2869 | |
57dc9a57 TM |
2870 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
2871 | if (data == NULL) | |
2872 | goto out; | |
2873 | ||
2874 | status = nfs4_do_create(dir, dentry, data); | |
2875 | ||
2876 | nfs4_free_createdata(data); | |
2877 | out: | |
1da177e4 LT |
2878 | return status; |
2879 | } | |
2880 | ||
2881 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2882 | struct iattr *sattr) | |
2883 | { | |
2884 | struct nfs4_exception exception = { }; | |
2885 | int err; | |
a8a5da99 AK |
2886 | |
2887 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
2888 | do { |
2889 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2890 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
2891 | &exception); | |
2892 | } while (exception.retry); | |
2893 | return err; | |
2894 | } | |
2895 | ||
2896 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 2897 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
2898 | { |
2899 | struct inode *dir = dentry->d_inode; | |
2900 | struct nfs4_readdir_arg args = { | |
2901 | .fh = NFS_FH(dir), | |
56e4ebf8 | 2902 | .pages = pages, |
1da177e4 LT |
2903 | .pgbase = 0, |
2904 | .count = count, | |
96d25e53 | 2905 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 2906 | .plus = plus, |
1da177e4 LT |
2907 | }; |
2908 | struct nfs4_readdir_res res; | |
2909 | struct rpc_message msg = { | |
2910 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
2911 | .rpc_argp = &args, | |
2912 | .rpc_resp = &res, | |
2913 | .rpc_cred = cred, | |
2914 | }; | |
2915 | int status; | |
2916 | ||
3110ff80 | 2917 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
2918 | dentry->d_parent->d_name.name, |
2919 | dentry->d_name.name, | |
2920 | (unsigned long long)cookie); | |
1da177e4 LT |
2921 | nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args); |
2922 | res.pgbase = args.pgbase; | |
7c513058 | 2923 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 2924 | if (status >= 0) { |
1da177e4 | 2925 | memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
2926 | status += args.pgbase; |
2927 | } | |
c4812998 TM |
2928 | |
2929 | nfs_invalidate_atime(dir); | |
2930 | ||
3110ff80 | 2931 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
2932 | return status; |
2933 | } | |
2934 | ||
2935 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 2936 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
2937 | { |
2938 | struct nfs4_exception exception = { }; | |
2939 | int err; | |
2940 | do { | |
2941 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
2942 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 2943 | pages, count, plus), |
1da177e4 LT |
2944 | &exception); |
2945 | } while (exception.retry); | |
2946 | return err; | |
2947 | } | |
2948 | ||
2949 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
2950 | struct iattr *sattr, dev_t rdev) | |
2951 | { | |
57dc9a57 TM |
2952 | struct nfs4_createdata *data; |
2953 | int mode = sattr->ia_mode; | |
2954 | int status = -ENOMEM; | |
1da177e4 LT |
2955 | |
2956 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
2957 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
57dc9a57 TM |
2958 | |
2959 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); | |
2960 | if (data == NULL) | |
2961 | goto out; | |
2962 | ||
1da177e4 | 2963 | if (S_ISFIFO(mode)) |
57dc9a57 | 2964 | data->arg.ftype = NF4FIFO; |
1da177e4 | 2965 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
2966 | data->arg.ftype = NF4BLK; |
2967 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
2968 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
2969 | } |
2970 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
2971 | data->arg.ftype = NF4CHR; |
2972 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
2973 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 | 2974 | } |
1da177e4 | 2975 | |
57dc9a57 TM |
2976 | status = nfs4_do_create(dir, dentry, data); |
2977 | ||
2978 | nfs4_free_createdata(data); | |
2979 | out: | |
1da177e4 LT |
2980 | return status; |
2981 | } | |
2982 | ||
2983 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
2984 | struct iattr *sattr, dev_t rdev) | |
2985 | { | |
2986 | struct nfs4_exception exception = { }; | |
2987 | int err; | |
a8a5da99 AK |
2988 | |
2989 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
2990 | do { |
2991 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2992 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
2993 | &exception); | |
2994 | } while (exception.retry); | |
2995 | return err; | |
2996 | } | |
2997 | ||
2998 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
2999 | struct nfs_fsstat *fsstat) | |
3000 | { | |
3001 | struct nfs4_statfs_arg args = { | |
3002 | .fh = fhandle, | |
3003 | .bitmask = server->attr_bitmask, | |
3004 | }; | |
24ad148a BH |
3005 | struct nfs4_statfs_res res = { |
3006 | .fsstat = fsstat, | |
3007 | }; | |
1da177e4 LT |
3008 | struct rpc_message msg = { |
3009 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3010 | .rpc_argp = &args, | |
24ad148a | 3011 | .rpc_resp = &res, |
1da177e4 LT |
3012 | }; |
3013 | ||
0e574af1 | 3014 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3015 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3016 | } |
3017 | ||
3018 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3019 | { | |
3020 | struct nfs4_exception exception = { }; | |
3021 | int err; | |
3022 | do { | |
3023 | err = nfs4_handle_exception(server, | |
3024 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3025 | &exception); | |
3026 | } while (exception.retry); | |
3027 | return err; | |
3028 | } | |
3029 | ||
3030 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3031 | struct nfs_fsinfo *fsinfo) | |
3032 | { | |
3033 | struct nfs4_fsinfo_arg args = { | |
3034 | .fh = fhandle, | |
3035 | .bitmask = server->attr_bitmask, | |
3036 | }; | |
3dda5e43 BH |
3037 | struct nfs4_fsinfo_res res = { |
3038 | .fsinfo = fsinfo, | |
3039 | }; | |
1da177e4 LT |
3040 | struct rpc_message msg = { |
3041 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3042 | .rpc_argp = &args, | |
3dda5e43 | 3043 | .rpc_resp = &res, |
1da177e4 LT |
3044 | }; |
3045 | ||
7c513058 | 3046 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3047 | } |
3048 | ||
3049 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3050 | { | |
3051 | struct nfs4_exception exception = { }; | |
3052 | int err; | |
3053 | ||
3054 | do { | |
3055 | err = nfs4_handle_exception(server, | |
3056 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
3057 | &exception); | |
3058 | } while (exception.retry); | |
3059 | return err; | |
3060 | } | |
3061 | ||
3062 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3063 | { | |
0e574af1 | 3064 | nfs_fattr_init(fsinfo->fattr); |
1da177e4 LT |
3065 | return nfs4_do_fsinfo(server, fhandle, fsinfo); |
3066 | } | |
3067 | ||
3068 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3069 | struct nfs_pathconf *pathconf) | |
3070 | { | |
3071 | struct nfs4_pathconf_arg args = { | |
3072 | .fh = fhandle, | |
3073 | .bitmask = server->attr_bitmask, | |
3074 | }; | |
d45b2989 BH |
3075 | struct nfs4_pathconf_res res = { |
3076 | .pathconf = pathconf, | |
3077 | }; | |
1da177e4 LT |
3078 | struct rpc_message msg = { |
3079 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3080 | .rpc_argp = &args, | |
d45b2989 | 3081 | .rpc_resp = &res, |
1da177e4 LT |
3082 | }; |
3083 | ||
3084 | /* None of the pathconf attributes are mandatory to implement */ | |
3085 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3086 | memset(pathconf, 0, sizeof(*pathconf)); | |
3087 | return 0; | |
3088 | } | |
3089 | ||
0e574af1 | 3090 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3091 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3092 | } |
3093 | ||
3094 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3095 | struct nfs_pathconf *pathconf) | |
3096 | { | |
3097 | struct nfs4_exception exception = { }; | |
3098 | int err; | |
3099 | ||
3100 | do { | |
3101 | err = nfs4_handle_exception(server, | |
3102 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3103 | &exception); | |
3104 | } while (exception.retry); | |
3105 | return err; | |
3106 | } | |
3107 | ||
cbdabc7f | 3108 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3109 | { |
ec06c096 | 3110 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 3111 | |
9e33bed5 | 3112 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
0110ee15 | 3113 | nfs_restart_rpc(task, server->nfs_client); |
ec06c096 | 3114 | return -EAGAIN; |
1da177e4 | 3115 | } |
8850df99 TM |
3116 | |
3117 | nfs_invalidate_atime(data->inode); | |
1da177e4 | 3118 | if (task->tk_status > 0) |
ec06c096 TM |
3119 | renew_lease(server, data->timestamp); |
3120 | return 0; | |
1da177e4 LT |
3121 | } |
3122 | ||
cbdabc7f AA |
3123 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3124 | { | |
3125 | ||
3126 | dprintk("--> %s\n", __func__); | |
3127 | ||
3128 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3129 | return -EAGAIN; | |
3130 | ||
3131 | return data->read_done_cb(task, data); | |
3132 | } | |
3133 | ||
bdc7f021 | 3134 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3135 | { |
1da177e4 | 3136 | data->timestamp = jiffies; |
cbdabc7f | 3137 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3138 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
1da177e4 LT |
3139 | } |
3140 | ||
cbdabc7f AA |
3141 | /* Reset the the nfs_read_data to send the read to the MDS. */ |
3142 | void nfs4_reset_read(struct rpc_task *task, struct nfs_read_data *data) | |
3143 | { | |
3144 | dprintk("%s Reset task for i/o through\n", __func__); | |
3145 | put_lseg(data->lseg); | |
3146 | data->lseg = NULL; | |
3147 | /* offsets will differ in the dense stripe case */ | |
3148 | data->args.offset = data->mds_offset; | |
3149 | data->ds_clp = NULL; | |
3150 | data->args.fh = NFS_FH(data->inode); | |
3151 | data->read_done_cb = nfs4_read_done_cb; | |
3152 | task->tk_ops = data->mds_ops; | |
3153 | rpc_task_reset_client(task, NFS_CLIENT(data->inode)); | |
3154 | } | |
3155 | EXPORT_SYMBOL_GPL(nfs4_reset_read); | |
3156 | ||
b029bc9b | 3157 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3158 | { |
1da177e4 LT |
3159 | struct inode *inode = data->inode; |
3160 | ||
9e33bed5 | 3161 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
0110ee15 | 3162 | nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client); |
788e7a89 | 3163 | return -EAGAIN; |
1da177e4 | 3164 | } |
4f9838c7 | 3165 | if (task->tk_status >= 0) { |
1da177e4 | 3166 | renew_lease(NFS_SERVER(inode), data->timestamp); |
70ca8852 | 3167 | nfs_post_op_update_inode_force_wcc(inode, data->res.fattr); |
4f9838c7 | 3168 | } |
788e7a89 | 3169 | return 0; |
1da177e4 LT |
3170 | } |
3171 | ||
b029bc9b FI |
3172 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3173 | { | |
3174 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3175 | return -EAGAIN; | |
3176 | return data->write_done_cb(task, data); | |
3177 | } | |
3178 | ||
a69aef14 FI |
3179 | /* Reset the the nfs_write_data to send the write to the MDS. */ |
3180 | void nfs4_reset_write(struct rpc_task *task, struct nfs_write_data *data) | |
3181 | { | |
3182 | dprintk("%s Reset task for i/o through\n", __func__); | |
3183 | put_lseg(data->lseg); | |
3184 | data->lseg = NULL; | |
3185 | data->ds_clp = NULL; | |
3186 | data->write_done_cb = nfs4_write_done_cb; | |
3187 | data->args.fh = NFS_FH(data->inode); | |
3188 | data->args.bitmask = data->res.server->cache_consistency_bitmask; | |
3189 | data->args.offset = data->mds_offset; | |
3190 | data->res.fattr = &data->fattr; | |
3191 | task->tk_ops = data->mds_ops; | |
3192 | rpc_task_reset_client(task, NFS_CLIENT(data->inode)); | |
3193 | } | |
3194 | EXPORT_SYMBOL_GPL(nfs4_reset_write); | |
3195 | ||
bdc7f021 | 3196 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3197 | { |
bdc7f021 TM |
3198 | struct nfs_server *server = NFS_SERVER(data->inode); |
3199 | ||
7ffd1064 FI |
3200 | if (data->lseg) { |
3201 | data->args.bitmask = NULL; | |
3202 | data->res.fattr = NULL; | |
3203 | } else | |
3204 | data->args.bitmask = server->cache_consistency_bitmask; | |
b029bc9b FI |
3205 | if (!data->write_done_cb) |
3206 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3207 | data->res.server = server; |
1da177e4 LT |
3208 | data->timestamp = jiffies; |
3209 | ||
bdc7f021 | 3210 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
1da177e4 LT |
3211 | } |
3212 | ||
788e7a89 | 3213 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3214 | { |
1da177e4 LT |
3215 | struct inode *inode = data->inode; |
3216 | ||
14516c3a TM |
3217 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
3218 | return -EAGAIN; | |
3219 | ||
9e33bed5 | 3220 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
0110ee15 | 3221 | nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client); |
788e7a89 | 3222 | return -EAGAIN; |
1da177e4 | 3223 | } |
9e08a3c5 | 3224 | nfs_refresh_inode(inode, data->res.fattr); |
788e7a89 | 3225 | return 0; |
1da177e4 LT |
3226 | } |
3227 | ||
bdc7f021 | 3228 | static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3229 | { |
788e7a89 | 3230 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 3231 | |
a65318bf | 3232 | data->args.bitmask = server->cache_consistency_bitmask; |
4f9838c7 | 3233 | data->res.server = server; |
bdc7f021 | 3234 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
1da177e4 LT |
3235 | } |
3236 | ||
9bc4e3ca CL |
3237 | struct nfs4_renewdata { |
3238 | struct nfs_client *client; | |
3239 | unsigned long timestamp; | |
3240 | }; | |
3241 | ||
1da177e4 LT |
3242 | /* |
3243 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3244 | * standalone procedure for queueing an asynchronous RENEW. | |
3245 | */ | |
9bc4e3ca | 3246 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3247 | { |
9bc4e3ca CL |
3248 | struct nfs4_renewdata *data = calldata; |
3249 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3250 | |
0851de06 AB |
3251 | if (atomic_read(&clp->cl_count) > 1) |
3252 | nfs4_schedule_state_renewal(clp); | |
3253 | nfs_put_client(clp); | |
9bc4e3ca | 3254 | kfree(data); |
dc96aef9 AB |
3255 | } |
3256 | ||
9bc4e3ca | 3257 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3258 | { |
9bc4e3ca CL |
3259 | struct nfs4_renewdata *data = calldata; |
3260 | struct nfs_client *clp = data->client; | |
3261 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3262 | |
3263 | if (task->tk_status < 0) { | |
95baa25c TM |
3264 | /* Unless we're shutting down, schedule state recovery! */ |
3265 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) != 0) | |
0400a6b0 | 3266 | nfs4_schedule_lease_recovery(clp); |
1da177e4 LT |
3267 | return; |
3268 | } | |
452e9352 | 3269 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3270 | } |
3271 | ||
963d8fe5 TM |
3272 | static const struct rpc_call_ops nfs4_renew_ops = { |
3273 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3274 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3275 | }; |
3276 | ||
adfa6f98 | 3277 | int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3278 | { |
3279 | struct rpc_message msg = { | |
3280 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3281 | .rpc_argp = clp, | |
b4454fe1 | 3282 | .rpc_cred = cred, |
1da177e4 | 3283 | }; |
9bc4e3ca | 3284 | struct nfs4_renewdata *data; |
1da177e4 | 3285 | |
0851de06 AB |
3286 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3287 | return -EIO; | |
9bc4e3ca CL |
3288 | data = kmalloc(sizeof(*data), GFP_KERNEL); |
3289 | if (data == NULL) | |
3290 | return -ENOMEM; | |
3291 | data->client = clp; | |
3292 | data->timestamp = jiffies; | |
1da177e4 | 3293 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, |
9bc4e3ca | 3294 | &nfs4_renew_ops, data); |
1da177e4 LT |
3295 | } |
3296 | ||
adfa6f98 | 3297 | int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3298 | { |
3299 | struct rpc_message msg = { | |
3300 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3301 | .rpc_argp = clp, | |
b4454fe1 | 3302 | .rpc_cred = cred, |
1da177e4 LT |
3303 | }; |
3304 | unsigned long now = jiffies; | |
3305 | int status; | |
3306 | ||
3307 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3308 | if (status < 0) | |
3309 | return status; | |
452e9352 | 3310 | do_renew_lease(clp, now); |
1da177e4 LT |
3311 | return 0; |
3312 | } | |
3313 | ||
aa1870af BF |
3314 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3315 | { | |
3316 | return (server->caps & NFS_CAP_ACLS) | |
3317 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3318 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3319 | } | |
3320 | ||
3321 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that | |
3322 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on | |
3323 | * the stack. | |
3324 | */ | |
3325 | #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT) | |
3326 | ||
3327 | static void buf_to_pages(const void *buf, size_t buflen, | |
3328 | struct page **pages, unsigned int *pgbase) | |
3329 | { | |
3330 | const void *p = buf; | |
3331 | ||
3332 | *pgbase = offset_in_page(buf); | |
3333 | p -= *pgbase; | |
3334 | while (p < buf + buflen) { | |
3335 | *(pages++) = virt_to_page(p); | |
3336 | p += PAGE_CACHE_SIZE; | |
3337 | } | |
3338 | } | |
3339 | ||
e9e3d724 NH |
3340 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
3341 | struct page **pages, unsigned int *pgbase) | |
3342 | { | |
3343 | struct page *newpage, **spages; | |
3344 | int rc = 0; | |
3345 | size_t len; | |
3346 | spages = pages; | |
3347 | ||
3348 | do { | |
43b7c3f0 | 3349 | len = min_t(size_t, PAGE_CACHE_SIZE, buflen); |
e9e3d724 NH |
3350 | newpage = alloc_page(GFP_KERNEL); |
3351 | ||
3352 | if (newpage == NULL) | |
3353 | goto unwind; | |
3354 | memcpy(page_address(newpage), buf, len); | |
3355 | buf += len; | |
3356 | buflen -= len; | |
3357 | *pages++ = newpage; | |
3358 | rc++; | |
3359 | } while (buflen != 0); | |
3360 | ||
3361 | return rc; | |
3362 | ||
3363 | unwind: | |
3364 | for(; rc > 0; rc--) | |
3365 | __free_page(spages[rc-1]); | |
3366 | return -ENOMEM; | |
3367 | } | |
3368 | ||
e50a1c2e BF |
3369 | struct nfs4_cached_acl { |
3370 | int cached; | |
3371 | size_t len; | |
3e9d4154 | 3372 | char data[0]; |
e50a1c2e BF |
3373 | }; |
3374 | ||
3375 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3376 | { | |
3377 | struct nfs_inode *nfsi = NFS_I(inode); | |
3378 | ||
3379 | spin_lock(&inode->i_lock); | |
3380 | kfree(nfsi->nfs4_acl); | |
3381 | nfsi->nfs4_acl = acl; | |
3382 | spin_unlock(&inode->i_lock); | |
3383 | } | |
3384 | ||
3385 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3386 | { | |
3387 | nfs4_set_cached_acl(inode, NULL); | |
3388 | } | |
3389 | ||
3390 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3391 | { | |
3392 | struct nfs_inode *nfsi = NFS_I(inode); | |
3393 | struct nfs4_cached_acl *acl; | |
3394 | int ret = -ENOENT; | |
3395 | ||
3396 | spin_lock(&inode->i_lock); | |
3397 | acl = nfsi->nfs4_acl; | |
3398 | if (acl == NULL) | |
3399 | goto out; | |
3400 | if (buf == NULL) /* user is just asking for length */ | |
3401 | goto out_len; | |
3402 | if (acl->cached == 0) | |
3403 | goto out; | |
3404 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3405 | if (acl->len > buflen) | |
3406 | goto out; | |
3407 | memcpy(buf, acl->data, acl->len); | |
3408 | out_len: | |
3409 | ret = acl->len; | |
3410 | out: | |
3411 | spin_unlock(&inode->i_lock); | |
3412 | return ret; | |
3413 | } | |
3414 | ||
3415 | static void nfs4_write_cached_acl(struct inode *inode, const char *buf, size_t acl_len) | |
3416 | { | |
3417 | struct nfs4_cached_acl *acl; | |
3418 | ||
3419 | if (buf && acl_len <= PAGE_SIZE) { | |
3420 | acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL); | |
3421 | if (acl == NULL) | |
3422 | goto out; | |
3423 | acl->cached = 1; | |
3424 | memcpy(acl->data, buf, acl_len); | |
3425 | } else { | |
3426 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3427 | if (acl == NULL) | |
3428 | goto out; | |
3429 | acl->cached = 0; | |
3430 | } | |
3431 | acl->len = acl_len; | |
3432 | out: | |
3433 | nfs4_set_cached_acl(inode, acl); | |
3434 | } | |
3435 | ||
16b4289c | 3436 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3437 | { |
aa1870af BF |
3438 | struct page *pages[NFS4ACL_MAXPAGES]; |
3439 | struct nfs_getaclargs args = { | |
3440 | .fh = NFS_FH(inode), | |
3441 | .acl_pages = pages, | |
3442 | .acl_len = buflen, | |
3443 | }; | |
663c79b3 BH |
3444 | struct nfs_getaclres res = { |
3445 | .acl_len = buflen, | |
3446 | }; | |
e50a1c2e | 3447 | void *resp_buf; |
aa1870af BF |
3448 | struct rpc_message msg = { |
3449 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3450 | .rpc_argp = &args, | |
663c79b3 | 3451 | .rpc_resp = &res, |
aa1870af | 3452 | }; |
e50a1c2e | 3453 | struct page *localpage = NULL; |
aa1870af BF |
3454 | int ret; |
3455 | ||
e50a1c2e BF |
3456 | if (buflen < PAGE_SIZE) { |
3457 | /* As long as we're doing a round trip to the server anyway, | |
3458 | * let's be prepared for a page of acl data. */ | |
3459 | localpage = alloc_page(GFP_KERNEL); | |
3460 | resp_buf = page_address(localpage); | |
3461 | if (localpage == NULL) | |
3462 | return -ENOMEM; | |
3463 | args.acl_pages[0] = localpage; | |
3464 | args.acl_pgbase = 0; | |
663c79b3 | 3465 | args.acl_len = PAGE_SIZE; |
e50a1c2e BF |
3466 | } else { |
3467 | resp_buf = buf; | |
3468 | buf_to_pages(buf, buflen, args.acl_pages, &args.acl_pgbase); | |
3469 | } | |
7c513058 | 3470 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
e50a1c2e BF |
3471 | if (ret) |
3472 | goto out_free; | |
663c79b3 BH |
3473 | if (res.acl_len > args.acl_len) |
3474 | nfs4_write_cached_acl(inode, NULL, res.acl_len); | |
e50a1c2e | 3475 | else |
663c79b3 | 3476 | nfs4_write_cached_acl(inode, resp_buf, res.acl_len); |
e50a1c2e BF |
3477 | if (buf) { |
3478 | ret = -ERANGE; | |
663c79b3 | 3479 | if (res.acl_len > buflen) |
e50a1c2e BF |
3480 | goto out_free; |
3481 | if (localpage) | |
663c79b3 | 3482 | memcpy(buf, resp_buf, res.acl_len); |
e50a1c2e | 3483 | } |
663c79b3 | 3484 | ret = res.acl_len; |
e50a1c2e BF |
3485 | out_free: |
3486 | if (localpage) | |
3487 | __free_page(localpage); | |
aa1870af BF |
3488 | return ret; |
3489 | } | |
3490 | ||
16b4289c TM |
3491 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
3492 | { | |
3493 | struct nfs4_exception exception = { }; | |
3494 | ssize_t ret; | |
3495 | do { | |
3496 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
3497 | if (ret >= 0) | |
3498 | break; | |
3499 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
3500 | } while (exception.retry); | |
3501 | return ret; | |
3502 | } | |
3503 | ||
e50a1c2e BF |
3504 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
3505 | { | |
3506 | struct nfs_server *server = NFS_SERVER(inode); | |
3507 | int ret; | |
3508 | ||
3509 | if (!nfs4_server_supports_acls(server)) | |
3510 | return -EOPNOTSUPP; | |
3511 | ret = nfs_revalidate_inode(server, inode); | |
3512 | if (ret < 0) | |
3513 | return ret; | |
08a22b39 AK |
3514 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
3515 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
3516 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
3517 | if (ret != -ENOENT) | |
3518 | return ret; | |
3519 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
3520 | } | |
3521 | ||
16b4289c | 3522 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
3523 | { |
3524 | struct nfs_server *server = NFS_SERVER(inode); | |
3525 | struct page *pages[NFS4ACL_MAXPAGES]; | |
3526 | struct nfs_setaclargs arg = { | |
3527 | .fh = NFS_FH(inode), | |
3528 | .acl_pages = pages, | |
3529 | .acl_len = buflen, | |
3530 | }; | |
73c403a9 | 3531 | struct nfs_setaclres res; |
4b580ee3 BF |
3532 | struct rpc_message msg = { |
3533 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
3534 | .rpc_argp = &arg, | |
73c403a9 | 3535 | .rpc_resp = &res, |
4b580ee3 | 3536 | }; |
e9e3d724 | 3537 | int ret, i; |
4b580ee3 BF |
3538 | |
3539 | if (!nfs4_server_supports_acls(server)) | |
3540 | return -EOPNOTSUPP; | |
e9e3d724 NH |
3541 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
3542 | if (i < 0) | |
3543 | return i; | |
642ac549 | 3544 | nfs_inode_return_delegation(inode); |
7c513058 | 3545 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
3546 | |
3547 | /* | |
3548 | * Free each page after tx, so the only ref left is | |
3549 | * held by the network stack | |
3550 | */ | |
3551 | for (; i > 0; i--) | |
3552 | put_page(pages[i-1]); | |
3553 | ||
08a22b39 AK |
3554 | /* |
3555 | * Acl update can result in inode attribute update. | |
3556 | * so mark the attribute cache invalid. | |
3557 | */ | |
3558 | spin_lock(&inode->i_lock); | |
3559 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
3560 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
3561 | nfs_access_zap_cache(inode); |
3562 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
3563 | return ret; |
3564 | } | |
3565 | ||
16b4289c TM |
3566 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
3567 | { | |
3568 | struct nfs4_exception exception = { }; | |
3569 | int err; | |
3570 | do { | |
3571 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3572 | __nfs4_proc_set_acl(inode, buf, buflen), | |
3573 | &exception); | |
3574 | } while (exception.retry); | |
3575 | return err; | |
3576 | } | |
3577 | ||
1da177e4 | 3578 | static int |
aa5190d0 | 3579 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 3580 | { |
aa5190d0 TM |
3581 | struct nfs_client *clp = server->nfs_client; |
3582 | ||
3583 | if (task->tk_status >= 0) | |
1da177e4 LT |
3584 | return 0; |
3585 | switch(task->tk_status) { | |
9e33bed5 TM |
3586 | case -NFS4ERR_ADMIN_REVOKED: |
3587 | case -NFS4ERR_BAD_STATEID: | |
3588 | case -NFS4ERR_OPENMODE: | |
3589 | if (state == NULL) | |
3590 | break; | |
0400a6b0 TM |
3591 | nfs4_schedule_stateid_recovery(server, state); |
3592 | goto wait_on_recovery; | |
1da177e4 | 3593 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 3594 | case -NFS4ERR_STALE_CLIENTID: |
1da177e4 | 3595 | case -NFS4ERR_EXPIRED: |
0400a6b0 TM |
3596 | nfs4_schedule_lease_recovery(clp); |
3597 | goto wait_on_recovery; | |
4745e315 AA |
3598 | #if defined(CONFIG_NFS_V4_1) |
3599 | case -NFS4ERR_BADSESSION: | |
3600 | case -NFS4ERR_BADSLOT: | |
3601 | case -NFS4ERR_BAD_HIGH_SLOT: | |
3602 | case -NFS4ERR_DEADSESSION: | |
3603 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
3604 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
3605 | case -NFS4ERR_SEQ_MISORDERED: | |
3606 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
3607 | task->tk_status); | |
0400a6b0 | 3608 | nfs4_schedule_session_recovery(clp->cl_session); |
4745e315 AA |
3609 | task->tk_status = 0; |
3610 | return -EAGAIN; | |
3611 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 3612 | case -NFS4ERR_DELAY: |
aa5190d0 | 3613 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 3614 | case -NFS4ERR_GRACE: |
2c643488 | 3615 | case -EKEYEXPIRED: |
1da177e4 LT |
3616 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
3617 | task->tk_status = 0; | |
3618 | return -EAGAIN; | |
3619 | case -NFS4ERR_OLD_STATEID: | |
3620 | task->tk_status = 0; | |
3621 | return -EAGAIN; | |
3622 | } | |
3623 | task->tk_status = nfs4_map_errors(task->tk_status); | |
3624 | return 0; | |
0400a6b0 | 3625 | wait_on_recovery: |
a2c0b9e2 | 3626 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
3627 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
3628 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
3629 | task->tk_status = 0; | |
3630 | return -EAGAIN; | |
1da177e4 LT |
3631 | } |
3632 | ||
bb8b27e5 TM |
3633 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
3634 | unsigned short port, struct rpc_cred *cred, | |
3635 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
3636 | { |
3637 | nfs4_verifier sc_verifier; | |
3638 | struct nfs4_setclientid setclientid = { | |
3639 | .sc_verifier = &sc_verifier, | |
3640 | .sc_prog = program, | |
f4eecd5d | 3641 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
3642 | }; |
3643 | struct rpc_message msg = { | |
3644 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
3645 | .rpc_argp = &setclientid, | |
bb8b27e5 | 3646 | .rpc_resp = res, |
286d7d6a | 3647 | .rpc_cred = cred, |
1da177e4 | 3648 | }; |
bc4785cd | 3649 | __be32 *p; |
1da177e4 LT |
3650 | int loop = 0; |
3651 | int status; | |
3652 | ||
bc4785cd | 3653 | p = (__be32*)sc_verifier.data; |
1da177e4 LT |
3654 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); |
3655 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
3656 | ||
3657 | for(;;) { | |
3658 | setclientid.sc_name_len = scnprintf(setclientid.sc_name, | |
69dd716c | 3659 | sizeof(setclientid.sc_name), "%s/%s %s %s %u", |
d4d3c507 CL |
3660 | clp->cl_ipaddr, |
3661 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3662 | RPC_DISPLAY_ADDR), | |
69dd716c TM |
3663 | rpc_peeraddr2str(clp->cl_rpcclient, |
3664 | RPC_DISPLAY_PROTO), | |
78ea323b | 3665 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
1da177e4 LT |
3666 | clp->cl_id_uniquifier); |
3667 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, | |
d4d3c507 CL |
3668 | sizeof(setclientid.sc_netid), |
3669 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3670 | RPC_DISPLAY_NETID)); | |
1da177e4 | 3671 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 3672 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
3673 | clp->cl_ipaddr, port >> 8, port & 255); |
3674 | ||
3675 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3676 | if (status != -NFS4ERR_CLID_INUSE) | |
3677 | break; | |
3678 | if (signalled()) | |
3679 | break; | |
3680 | if (loop++ & 1) | |
611c96c8 | 3681 | ssleep(clp->cl_lease_time / HZ + 1); |
1da177e4 LT |
3682 | else |
3683 | if (++clp->cl_id_uniquifier == 0) | |
3684 | break; | |
3685 | } | |
3686 | return status; | |
3687 | } | |
3688 | ||
bb8b27e5 TM |
3689 | static int _nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
3690 | struct nfs4_setclientid_res *arg, | |
3691 | struct rpc_cred *cred) | |
1da177e4 LT |
3692 | { |
3693 | struct nfs_fsinfo fsinfo; | |
3694 | struct rpc_message msg = { | |
3695 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 3696 | .rpc_argp = arg, |
1da177e4 | 3697 | .rpc_resp = &fsinfo, |
286d7d6a | 3698 | .rpc_cred = cred, |
1da177e4 LT |
3699 | }; |
3700 | unsigned long now; | |
3701 | int status; | |
3702 | ||
3703 | now = jiffies; | |
3704 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3705 | if (status == 0) { | |
3706 | spin_lock(&clp->cl_lock); | |
3707 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
3708 | clp->cl_last_renewal = now; | |
3709 | spin_unlock(&clp->cl_lock); | |
3710 | } | |
3711 | return status; | |
3712 | } | |
3713 | ||
bb8b27e5 TM |
3714 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
3715 | struct nfs4_setclientid_res *arg, | |
3716 | struct rpc_cred *cred) | |
51581f3b | 3717 | { |
77e03677 | 3718 | long timeout = 0; |
51581f3b TM |
3719 | int err; |
3720 | do { | |
bb8b27e5 | 3721 | err = _nfs4_proc_setclientid_confirm(clp, arg, cred); |
51581f3b TM |
3722 | switch (err) { |
3723 | case 0: | |
3724 | return err; | |
3725 | case -NFS4ERR_RESOURCE: | |
3726 | /* The IBM lawyers misread another document! */ | |
3727 | case -NFS4ERR_DELAY: | |
3728 | err = nfs4_delay(clp->cl_rpcclient, &timeout); | |
3729 | } | |
3730 | } while (err == 0); | |
3731 | return err; | |
3732 | } | |
3733 | ||
fe650407 TM |
3734 | struct nfs4_delegreturndata { |
3735 | struct nfs4_delegreturnargs args; | |
fa178f29 | 3736 | struct nfs4_delegreturnres res; |
fe650407 TM |
3737 | struct nfs_fh fh; |
3738 | nfs4_stateid stateid; | |
26e976a8 | 3739 | unsigned long timestamp; |
fa178f29 | 3740 | struct nfs_fattr fattr; |
fe650407 TM |
3741 | int rpc_status; |
3742 | }; | |
3743 | ||
fe650407 TM |
3744 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
3745 | { | |
3746 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 3747 | |
14516c3a TM |
3748 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
3749 | return; | |
938e1010 | 3750 | |
79708861 RL |
3751 | switch (task->tk_status) { |
3752 | case -NFS4ERR_STALE_STATEID: | |
3753 | case -NFS4ERR_EXPIRED: | |
3754 | case 0: | |
fa178f29 | 3755 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
3756 | break; |
3757 | default: | |
3758 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
3759 | -EAGAIN) { | |
3760 | nfs_restart_rpc(task, data->res.server->nfs_client); | |
3761 | return; | |
3762 | } | |
3763 | } | |
3764 | data->rpc_status = task->tk_status; | |
fe650407 TM |
3765 | } |
3766 | ||
3767 | static void nfs4_delegreturn_release(void *calldata) | |
3768 | { | |
fe650407 TM |
3769 | kfree(calldata); |
3770 | } | |
3771 | ||
938e1010 AA |
3772 | #if defined(CONFIG_NFS_V4_1) |
3773 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
3774 | { | |
3775 | struct nfs4_delegreturndata *d_data; | |
3776 | ||
3777 | d_data = (struct nfs4_delegreturndata *)data; | |
3778 | ||
035168ab | 3779 | if (nfs4_setup_sequence(d_data->res.server, |
938e1010 AA |
3780 | &d_data->args.seq_args, |
3781 | &d_data->res.seq_res, 1, task)) | |
3782 | return; | |
3783 | rpc_call_start(task); | |
3784 | } | |
3785 | #endif /* CONFIG_NFS_V4_1 */ | |
3786 | ||
c8d149f3 | 3787 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
3788 | #if defined(CONFIG_NFS_V4_1) |
3789 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
3790 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
3791 | .rpc_call_done = nfs4_delegreturn_done, |
3792 | .rpc_release = nfs4_delegreturn_release, | |
3793 | }; | |
3794 | ||
e6f81075 | 3795 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
3796 | { |
3797 | struct nfs4_delegreturndata *data; | |
fa178f29 | 3798 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 3799 | struct rpc_task *task; |
5138fde0 TM |
3800 | struct rpc_message msg = { |
3801 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
3802 | .rpc_cred = cred, | |
3803 | }; | |
c970aa85 TM |
3804 | struct rpc_task_setup task_setup_data = { |
3805 | .rpc_client = server->client, | |
5138fde0 | 3806 | .rpc_message = &msg, |
c970aa85 TM |
3807 | .callback_ops = &nfs4_delegreturn_ops, |
3808 | .flags = RPC_TASK_ASYNC, | |
3809 | }; | |
e6f81075 | 3810 | int status = 0; |
fe650407 | 3811 | |
8535b2be | 3812 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
3813 | if (data == NULL) |
3814 | return -ENOMEM; | |
3815 | data->args.fhandle = &data->fh; | |
3816 | data->args.stateid = &data->stateid; | |
fa178f29 | 3817 | data->args.bitmask = server->attr_bitmask; |
fe650407 TM |
3818 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
3819 | memcpy(&data->stateid, stateid, sizeof(data->stateid)); | |
fa178f29 TM |
3820 | data->res.fattr = &data->fattr; |
3821 | data->res.server = server; | |
5138fde0 | 3822 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 3823 | data->timestamp = jiffies; |
fe650407 TM |
3824 | data->rpc_status = 0; |
3825 | ||
c970aa85 | 3826 | task_setup_data.callback_data = data; |
1174dd1f TM |
3827 | msg.rpc_argp = &data->args; |
3828 | msg.rpc_resp = &data->res; | |
c970aa85 | 3829 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 3830 | if (IS_ERR(task)) |
fe650407 | 3831 | return PTR_ERR(task); |
e6f81075 TM |
3832 | if (!issync) |
3833 | goto out; | |
fe650407 | 3834 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
3835 | if (status != 0) |
3836 | goto out; | |
3837 | status = data->rpc_status; | |
3838 | if (status != 0) | |
3839 | goto out; | |
3840 | nfs_refresh_inode(inode, &data->fattr); | |
3841 | out: | |
e6b3c4db | 3842 | rpc_put_task(task); |
fe650407 | 3843 | return status; |
1da177e4 LT |
3844 | } |
3845 | ||
e6f81075 | 3846 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
3847 | { |
3848 | struct nfs_server *server = NFS_SERVER(inode); | |
3849 | struct nfs4_exception exception = { }; | |
3850 | int err; | |
3851 | do { | |
e6f81075 | 3852 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
3853 | switch (err) { |
3854 | case -NFS4ERR_STALE_STATEID: | |
3855 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
3856 | case 0: |
3857 | return 0; | |
3858 | } | |
3859 | err = nfs4_handle_exception(server, err, &exception); | |
3860 | } while (exception.retry); | |
3861 | return err; | |
3862 | } | |
3863 | ||
3864 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
3865 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
3866 | ||
3867 | /* | |
3868 | * sleep, with exponential backoff, and retry the LOCK operation. | |
3869 | */ | |
3870 | static unsigned long | |
3871 | nfs4_set_lock_task_retry(unsigned long timeout) | |
3872 | { | |
150030b7 | 3873 | schedule_timeout_killable(timeout); |
1da177e4 LT |
3874 | timeout <<= 1; |
3875 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
3876 | return NFS4_LOCK_MAXTIMEOUT; | |
3877 | return timeout; | |
3878 | } | |
3879 | ||
1da177e4 LT |
3880 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
3881 | { | |
3882 | struct inode *inode = state->inode; | |
3883 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 3884 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 3885 | struct nfs_lockt_args arg = { |
1da177e4 | 3886 | .fh = NFS_FH(inode), |
911d1aaf | 3887 | .fl = request, |
1da177e4 | 3888 | }; |
911d1aaf TM |
3889 | struct nfs_lockt_res res = { |
3890 | .denied = request, | |
1da177e4 LT |
3891 | }; |
3892 | struct rpc_message msg = { | |
3893 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
3894 | .rpc_argp = &arg, | |
3895 | .rpc_resp = &res, | |
3896 | .rpc_cred = state->owner->so_cred, | |
3897 | }; | |
1da177e4 LT |
3898 | struct nfs4_lock_state *lsp; |
3899 | int status; | |
3900 | ||
911d1aaf | 3901 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
3902 | status = nfs4_set_lock_state(state, request); |
3903 | if (status != 0) | |
3904 | goto out; | |
3905 | lsp = request->fl_u.nfs4_fl.owner; | |
9f958ab8 | 3906 | arg.lock_owner.id = lsp->ls_id.id; |
d035c36c | 3907 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 3908 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
3909 | switch (status) { |
3910 | case 0: | |
3911 | request->fl_type = F_UNLCK; | |
3912 | break; | |
3913 | case -NFS4ERR_DENIED: | |
3914 | status = 0; | |
1da177e4 | 3915 | } |
70cc6487 | 3916 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 3917 | out: |
1da177e4 LT |
3918 | return status; |
3919 | } | |
3920 | ||
3921 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
3922 | { | |
3923 | struct nfs4_exception exception = { }; | |
3924 | int err; | |
3925 | ||
3926 | do { | |
3927 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
3928 | _nfs4_proc_getlk(state, cmd, request), | |
3929 | &exception); | |
3930 | } while (exception.retry); | |
3931 | return err; | |
3932 | } | |
3933 | ||
3934 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
3935 | { | |
3936 | int res = 0; | |
3937 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
3938 | case FL_POSIX: | |
3939 | res = posix_lock_file_wait(file, fl); | |
3940 | break; | |
3941 | case FL_FLOCK: | |
3942 | res = flock_lock_file_wait(file, fl); | |
3943 | break; | |
3944 | default: | |
3945 | BUG(); | |
3946 | } | |
1da177e4 LT |
3947 | return res; |
3948 | } | |
3949 | ||
faf5f49c | 3950 | struct nfs4_unlockdata { |
911d1aaf TM |
3951 | struct nfs_locku_args arg; |
3952 | struct nfs_locku_res res; | |
faf5f49c TM |
3953 | struct nfs4_lock_state *lsp; |
3954 | struct nfs_open_context *ctx; | |
911d1aaf TM |
3955 | struct file_lock fl; |
3956 | const struct nfs_server *server; | |
26e976a8 | 3957 | unsigned long timestamp; |
faf5f49c TM |
3958 | }; |
3959 | ||
911d1aaf TM |
3960 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
3961 | struct nfs_open_context *ctx, | |
3962 | struct nfs4_lock_state *lsp, | |
3963 | struct nfs_seqid *seqid) | |
3964 | { | |
3965 | struct nfs4_unlockdata *p; | |
3966 | struct inode *inode = lsp->ls_state->inode; | |
3967 | ||
8535b2be | 3968 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
3969 | if (p == NULL) |
3970 | return NULL; | |
3971 | p->arg.fh = NFS_FH(inode); | |
3972 | p->arg.fl = &p->fl; | |
3973 | p->arg.seqid = seqid; | |
c1d51931 | 3974 | p->res.seqid = seqid; |
911d1aaf TM |
3975 | p->arg.stateid = &lsp->ls_stateid; |
3976 | p->lsp = lsp; | |
3977 | atomic_inc(&lsp->ls_count); | |
3978 | /* Ensure we don't close file until we're done freeing locks! */ | |
3979 | p->ctx = get_nfs_open_context(ctx); | |
3980 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
3981 | p->server = NFS_SERVER(inode); | |
3982 | return p; | |
3983 | } | |
3984 | ||
06f814a3 | 3985 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 3986 | { |
963d8fe5 | 3987 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 3988 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
3989 | nfs4_put_lock_state(calldata->lsp); |
3990 | put_nfs_open_context(calldata->ctx); | |
3991 | kfree(calldata); | |
faf5f49c TM |
3992 | } |
3993 | ||
963d8fe5 | 3994 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 3995 | { |
963d8fe5 | 3996 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 3997 | |
14516c3a TM |
3998 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
3999 | return; | |
faf5f49c TM |
4000 | switch (task->tk_status) { |
4001 | case 0: | |
4002 | memcpy(calldata->lsp->ls_stateid.data, | |
911d1aaf | 4003 | calldata->res.stateid.data, |
faf5f49c | 4004 | sizeof(calldata->lsp->ls_stateid.data)); |
26e976a8 | 4005 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 4006 | break; |
9e33bed5 TM |
4007 | case -NFS4ERR_BAD_STATEID: |
4008 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
4009 | case -NFS4ERR_STALE_STATEID: |
4010 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
4011 | break; |
4012 | default: | |
9e33bed5 | 4013 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
0110ee15 | 4014 | nfs_restart_rpc(task, |
d61e612a | 4015 | calldata->server->nfs_client); |
faf5f49c | 4016 | } |
faf5f49c TM |
4017 | } |
4018 | ||
4ce70ada | 4019 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 4020 | { |
4ce70ada | 4021 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4022 | |
911d1aaf | 4023 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c TM |
4024 | return; |
4025 | if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) { | |
963d8fe5 TM |
4026 | /* Note: exit _without_ running nfs4_locku_done */ |
4027 | task->tk_action = NULL; | |
faf5f49c TM |
4028 | return; |
4029 | } | |
26e976a8 | 4030 | calldata->timestamp = jiffies; |
035168ab | 4031 | if (nfs4_setup_sequence(calldata->server, |
a893693c AA |
4032 | &calldata->arg.seq_args, |
4033 | &calldata->res.seq_res, 1, task)) | |
4034 | return; | |
5138fde0 | 4035 | rpc_call_start(task); |
faf5f49c TM |
4036 | } |
4037 | ||
963d8fe5 | 4038 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 4039 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 4040 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 4041 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
4042 | }; |
4043 | ||
a5d16a4d TM |
4044 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
4045 | struct nfs_open_context *ctx, | |
4046 | struct nfs4_lock_state *lsp, | |
4047 | struct nfs_seqid *seqid) | |
4048 | { | |
4049 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
4050 | struct rpc_message msg = { |
4051 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
4052 | .rpc_cred = ctx->cred, | |
4053 | }; | |
c970aa85 TM |
4054 | struct rpc_task_setup task_setup_data = { |
4055 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 4056 | .rpc_message = &msg, |
c970aa85 | 4057 | .callback_ops = &nfs4_locku_ops, |
101070ca | 4058 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4059 | .flags = RPC_TASK_ASYNC, |
4060 | }; | |
a5d16a4d | 4061 | |
137d6aca FF |
4062 | /* Ensure this is an unlock - when canceling a lock, the |
4063 | * canceled lock is passed in, and it won't be an unlock. | |
4064 | */ | |
4065 | fl->fl_type = F_UNLCK; | |
4066 | ||
a5d16a4d TM |
4067 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
4068 | if (data == NULL) { | |
4069 | nfs_free_seqid(seqid); | |
4070 | return ERR_PTR(-ENOMEM); | |
4071 | } | |
4072 | ||
1174dd1f TM |
4073 | msg.rpc_argp = &data->arg; |
4074 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4075 | task_setup_data.callback_data = data; |
4076 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
4077 | } |
4078 | ||
faf5f49c TM |
4079 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
4080 | { | |
19e03c57 | 4081 | struct nfs_inode *nfsi = NFS_I(state->inode); |
911d1aaf | 4082 | struct nfs_seqid *seqid; |
1da177e4 | 4083 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
4084 | struct rpc_task *task; |
4085 | int status = 0; | |
536ff0f8 | 4086 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 4087 | |
8d0a8a9d | 4088 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
4089 | /* Unlock _before_ we do the RPC call */ |
4090 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
4091 | down_read(&nfsi->rwsem); |
4092 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
4093 | up_read(&nfsi->rwsem); | |
9b073574 | 4094 | goto out; |
19e03c57 TM |
4095 | } |
4096 | up_read(&nfsi->rwsem); | |
8d0a8a9d | 4097 | if (status != 0) |
9b073574 TM |
4098 | goto out; |
4099 | /* Is this a delegated lock? */ | |
4100 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
4101 | goto out; | |
8d0a8a9d | 4102 | lsp = request->fl_u.nfs4_fl.owner; |
8535b2be | 4103 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 4104 | status = -ENOMEM; |
911d1aaf | 4105 | if (seqid == NULL) |
9b073574 | 4106 | goto out; |
cd3758e3 | 4107 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
4108 | status = PTR_ERR(task); |
4109 | if (IS_ERR(task)) | |
9b073574 | 4110 | goto out; |
a5d16a4d | 4111 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 4112 | rpc_put_task(task); |
9b073574 | 4113 | out: |
536ff0f8 | 4114 | request->fl_flags = fl_flags; |
1da177e4 LT |
4115 | return status; |
4116 | } | |
4117 | ||
a5d16a4d TM |
4118 | struct nfs4_lockdata { |
4119 | struct nfs_lock_args arg; | |
4120 | struct nfs_lock_res res; | |
4121 | struct nfs4_lock_state *lsp; | |
4122 | struct nfs_open_context *ctx; | |
4123 | struct file_lock fl; | |
26e976a8 | 4124 | unsigned long timestamp; |
a5d16a4d TM |
4125 | int rpc_status; |
4126 | int cancelled; | |
66179efe | 4127 | struct nfs_server *server; |
a5d16a4d TM |
4128 | }; |
4129 | ||
4130 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
4131 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
4132 | gfp_t gfp_mask) | |
1da177e4 | 4133 | { |
a5d16a4d TM |
4134 | struct nfs4_lockdata *p; |
4135 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 4136 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 4137 | |
8535b2be | 4138 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
4139 | if (p == NULL) |
4140 | return NULL; | |
4141 | ||
4142 | p->arg.fh = NFS_FH(inode); | |
4143 | p->arg.fl = &p->fl; | |
8535b2be | 4144 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4145 | if (p->arg.open_seqid == NULL) |
4146 | goto out_free; | |
8535b2be | 4147 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4148 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4149 | goto out_free_seqid; |
a5d16a4d | 4150 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4151 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 4152 | p->arg.lock_owner.id = lsp->ls_id.id; |
d035c36c | 4153 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 4154 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4155 | p->lsp = lsp; |
66179efe | 4156 | p->server = server; |
a5d16a4d TM |
4157 | atomic_inc(&lsp->ls_count); |
4158 | p->ctx = get_nfs_open_context(ctx); | |
4159 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4160 | return p; | |
2f74c0a0 TM |
4161 | out_free_seqid: |
4162 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4163 | out_free: |
4164 | kfree(p); | |
4165 | return NULL; | |
4166 | } | |
4167 | ||
4168 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4169 | { | |
4170 | struct nfs4_lockdata *data = calldata; | |
4171 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4172 | |
3110ff80 | 4173 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
4174 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
4175 | return; | |
a5d16a4d TM |
4176 | /* Do we need to do an open_to_lock_owner? */ |
4177 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 TM |
4178 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
4179 | return; | |
a5d16a4d TM |
4180 | data->arg.open_stateid = &state->stateid; |
4181 | data->arg.new_lock_owner = 1; | |
c1d51931 | 4182 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4183 | } else |
4184 | data->arg.new_lock_owner = 0; | |
26e976a8 | 4185 | data->timestamp = jiffies; |
035168ab TM |
4186 | if (nfs4_setup_sequence(data->server, |
4187 | &data->arg.seq_args, | |
66179efe AA |
4188 | &data->res.seq_res, 1, task)) |
4189 | return; | |
5138fde0 | 4190 | rpc_call_start(task); |
3110ff80 | 4191 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
a5d16a4d TM |
4192 | } |
4193 | ||
b257957e AB |
4194 | static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata) |
4195 | { | |
4196 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
4197 | nfs4_lock_prepare(task, calldata); | |
4198 | } | |
4199 | ||
a5d16a4d TM |
4200 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4201 | { | |
4202 | struct nfs4_lockdata *data = calldata; | |
4203 | ||
3110ff80 | 4204 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4205 | |
14516c3a TM |
4206 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4207 | return; | |
66179efe | 4208 | |
a5d16a4d | 4209 | data->rpc_status = task->tk_status; |
a5d16a4d | 4210 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4211 | if (data->rpc_status == 0) |
4212 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4213 | else | |
4214 | goto out; | |
4215 | } | |
4216 | if (data->rpc_status == 0) { | |
4217 | memcpy(data->lsp->ls_stateid.data, data->res.stateid.data, | |
4218 | sizeof(data->lsp->ls_stateid.data)); | |
4219 | data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; | |
88be9f99 | 4220 | renew_lease(NFS_SERVER(data->ctx->path.dentry->d_inode), data->timestamp); |
a5d16a4d | 4221 | } |
a5d16a4d | 4222 | out: |
3110ff80 | 4223 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4224 | } |
4225 | ||
4226 | static void nfs4_lock_release(void *calldata) | |
4227 | { | |
4228 | struct nfs4_lockdata *data = calldata; | |
4229 | ||
3110ff80 | 4230 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4231 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4232 | if (data->cancelled != 0) { |
4233 | struct rpc_task *task; | |
4234 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4235 | data->arg.lock_seqid); | |
4236 | if (!IS_ERR(task)) | |
bf294b41 | 4237 | rpc_put_task_async(task); |
3110ff80 | 4238 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4239 | } else |
4240 | nfs_free_seqid(data->arg.lock_seqid); | |
4241 | nfs4_put_lock_state(data->lsp); | |
4242 | put_nfs_open_context(data->ctx); | |
4243 | kfree(data); | |
3110ff80 | 4244 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4245 | } |
4246 | ||
4247 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4248 | .rpc_call_prepare = nfs4_lock_prepare, | |
4249 | .rpc_call_done = nfs4_lock_done, | |
4250 | .rpc_release = nfs4_lock_release, | |
4251 | }; | |
4252 | ||
b257957e AB |
4253 | static const struct rpc_call_ops nfs4_recover_lock_ops = { |
4254 | .rpc_call_prepare = nfs4_recover_lock_prepare, | |
4255 | .rpc_call_done = nfs4_lock_done, | |
4256 | .rpc_release = nfs4_lock_release, | |
4257 | }; | |
4258 | ||
2bee72a6 TM |
4259 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4260 | { | |
2bee72a6 TM |
4261 | switch (error) { |
4262 | case -NFS4ERR_ADMIN_REVOKED: | |
4263 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 4264 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 TM |
4265 | if (new_lock_owner != 0 || |
4266 | (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0) | |
ecac799a | 4267 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
4268 | break; |
4269 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 4270 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
4271 | case -NFS4ERR_EXPIRED: |
4272 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
4273 | }; |
4274 | } | |
4275 | ||
afe6c27c | 4276 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4277 | { |
4278 | struct nfs4_lockdata *data; | |
4279 | struct rpc_task *task; | |
5138fde0 TM |
4280 | struct rpc_message msg = { |
4281 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4282 | .rpc_cred = state->owner->so_cred, | |
4283 | }; | |
c970aa85 TM |
4284 | struct rpc_task_setup task_setup_data = { |
4285 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4286 | .rpc_message = &msg, |
c970aa85 | 4287 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4288 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4289 | .flags = RPC_TASK_ASYNC, |
4290 | }; | |
a5d16a4d TM |
4291 | int ret; |
4292 | ||
3110ff80 | 4293 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4294 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4295 | fl->fl_u.nfs4_fl.owner, |
4296 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4297 | if (data == NULL) |
4298 | return -ENOMEM; | |
4299 | if (IS_SETLKW(cmd)) | |
4300 | data->arg.block = 1; | |
b257957e AB |
4301 | if (recovery_type > NFS_LOCK_NEW) { |
4302 | if (recovery_type == NFS_LOCK_RECLAIM) | |
afe6c27c | 4303 | data->arg.reclaim = NFS_LOCK_RECLAIM; |
b257957e AB |
4304 | task_setup_data.callback_ops = &nfs4_recover_lock_ops; |
4305 | } | |
1174dd1f TM |
4306 | msg.rpc_argp = &data->arg; |
4307 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4308 | task_setup_data.callback_data = data; |
4309 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 4310 | if (IS_ERR(task)) |
a5d16a4d | 4311 | return PTR_ERR(task); |
a5d16a4d TM |
4312 | ret = nfs4_wait_for_completion_rpc_task(task); |
4313 | if (ret == 0) { | |
4314 | ret = data->rpc_status; | |
2bee72a6 TM |
4315 | if (ret) |
4316 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4317 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4318 | } else |
4319 | data->cancelled = 1; | |
e6b3c4db | 4320 | rpc_put_task(task); |
3110ff80 | 4321 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4322 | return ret; |
1da177e4 LT |
4323 | } |
4324 | ||
4325 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4326 | { | |
202b50dc TM |
4327 | struct nfs_server *server = NFS_SERVER(state->inode); |
4328 | struct nfs4_exception exception = { }; | |
4329 | int err; | |
4330 | ||
4331 | do { | |
42a2d13e TM |
4332 | /* Cache the lock if possible... */ |
4333 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4334 | return 0; | |
afe6c27c | 4335 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 4336 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
4337 | break; |
4338 | nfs4_handle_exception(server, err, &exception); | |
4339 | } while (exception.retry); | |
4340 | return err; | |
1da177e4 LT |
4341 | } |
4342 | ||
4343 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4344 | { | |
202b50dc TM |
4345 | struct nfs_server *server = NFS_SERVER(state->inode); |
4346 | struct nfs4_exception exception = { }; | |
4347 | int err; | |
4348 | ||
6bfc93ef TM |
4349 | err = nfs4_set_lock_state(state, request); |
4350 | if (err != 0) | |
4351 | return err; | |
202b50dc | 4352 | do { |
42a2d13e TM |
4353 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4354 | return 0; | |
afe6c27c | 4355 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
4356 | switch (err) { |
4357 | default: | |
4358 | goto out; | |
4359 | case -NFS4ERR_GRACE: | |
4360 | case -NFS4ERR_DELAY: | |
4361 | nfs4_handle_exception(server, err, &exception); | |
4362 | err = 0; | |
4363 | } | |
202b50dc | 4364 | } while (exception.retry); |
a9ed2e25 | 4365 | out: |
202b50dc | 4366 | return err; |
1da177e4 LT |
4367 | } |
4368 | ||
4369 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4370 | { | |
19e03c57 | 4371 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 4372 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 4373 | int status = -ENOLCK; |
1da177e4 | 4374 | |
8e469ebd TM |
4375 | if ((fl_flags & FL_POSIX) && |
4376 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
4377 | goto out; | |
6bfc93ef | 4378 | /* Is this a delegated open? */ |
6bfc93ef TM |
4379 | status = nfs4_set_lock_state(state, request); |
4380 | if (status != 0) | |
4381 | goto out; | |
01c3b861 TM |
4382 | request->fl_flags |= FL_ACCESS; |
4383 | status = do_vfs_lock(request->fl_file, request); | |
4384 | if (status < 0) | |
4385 | goto out; | |
19e03c57 | 4386 | down_read(&nfsi->rwsem); |
01c3b861 | 4387 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 4388 | /* Yes: cache locks! */ |
01c3b861 | 4389 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
4390 | request->fl_flags = fl_flags & ~FL_SLEEP; |
4391 | status = do_vfs_lock(request->fl_file, request); | |
4392 | goto out_unlock; | |
01c3b861 | 4393 | } |
afe6c27c | 4394 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 4395 | if (status != 0) |
01c3b861 | 4396 | goto out_unlock; |
6bfc93ef | 4397 | /* Note: we always want to sleep here! */ |
01c3b861 | 4398 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 4399 | if (do_vfs_lock(request->fl_file, request) < 0) |
3110ff80 | 4400 | printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __func__); |
01c3b861 | 4401 | out_unlock: |
19e03c57 | 4402 | up_read(&nfsi->rwsem); |
01c3b861 TM |
4403 | out: |
4404 | request->fl_flags = fl_flags; | |
1da177e4 LT |
4405 | return status; |
4406 | } | |
4407 | ||
4408 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4409 | { | |
4410 | struct nfs4_exception exception = { }; | |
4411 | int err; | |
4412 | ||
4413 | do { | |
965b5d67 TM |
4414 | err = _nfs4_proc_setlk(state, cmd, request); |
4415 | if (err == -NFS4ERR_DENIED) | |
4416 | err = -EAGAIN; | |
1da177e4 | 4417 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 4418 | err, &exception); |
1da177e4 LT |
4419 | } while (exception.retry); |
4420 | return err; | |
4421 | } | |
4422 | ||
4423 | static int | |
4424 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
4425 | { | |
4426 | struct nfs_open_context *ctx; | |
4427 | struct nfs4_state *state; | |
4428 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
4429 | int status; | |
4430 | ||
4431 | /* verify open state */ | |
cd3758e3 | 4432 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
4433 | state = ctx->state; |
4434 | ||
4435 | if (request->fl_start < 0 || request->fl_end < 0) | |
4436 | return -EINVAL; | |
4437 | ||
d953126a TM |
4438 | if (IS_GETLK(cmd)) { |
4439 | if (state != NULL) | |
4440 | return nfs4_proc_getlk(state, F_GETLK, request); | |
4441 | return 0; | |
4442 | } | |
1da177e4 LT |
4443 | |
4444 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
4445 | return -EINVAL; | |
4446 | ||
d953126a TM |
4447 | if (request->fl_type == F_UNLCK) { |
4448 | if (state != NULL) | |
4449 | return nfs4_proc_unlck(state, cmd, request); | |
4450 | return 0; | |
4451 | } | |
1da177e4 | 4452 | |
d953126a TM |
4453 | if (state == NULL) |
4454 | return -ENOLCK; | |
1da177e4 LT |
4455 | do { |
4456 | status = nfs4_proc_setlk(state, cmd, request); | |
4457 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
4458 | break; | |
4459 | timeout = nfs4_set_lock_task_retry(timeout); | |
4460 | status = -ERESTARTSYS; | |
4461 | if (signalled()) | |
4462 | break; | |
4463 | } while(status < 0); | |
1da177e4 LT |
4464 | return status; |
4465 | } | |
4466 | ||
888e694c TM |
4467 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
4468 | { | |
4469 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4470 | struct nfs4_exception exception = { }; | |
4471 | int err; | |
4472 | ||
4473 | err = nfs4_set_lock_state(state, fl); | |
4474 | if (err != 0) | |
4475 | goto out; | |
4476 | do { | |
afe6c27c | 4477 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
d5122201 TM |
4478 | switch (err) { |
4479 | default: | |
4480 | printk(KERN_ERR "%s: unhandled error %d.\n", | |
4481 | __func__, err); | |
4482 | case 0: | |
965b5d67 | 4483 | case -ESTALE: |
d5122201 TM |
4484 | goto out; |
4485 | case -NFS4ERR_EXPIRED: | |
4486 | case -NFS4ERR_STALE_CLIENTID: | |
965b5d67 | 4487 | case -NFS4ERR_STALE_STATEID: |
0400a6b0 TM |
4488 | nfs4_schedule_lease_recovery(server->nfs_client); |
4489 | goto out; | |
74e7bb73 RL |
4490 | case -NFS4ERR_BADSESSION: |
4491 | case -NFS4ERR_BADSLOT: | |
4492 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4493 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4494 | case -NFS4ERR_DEADSESSION: | |
0400a6b0 | 4495 | nfs4_schedule_session_recovery(server->nfs_client->cl_session); |
d5122201 | 4496 | goto out; |
965b5d67 TM |
4497 | case -ERESTARTSYS: |
4498 | /* | |
4499 | * The show must go on: exit, but mark the | |
4500 | * stateid as needing recovery. | |
4501 | */ | |
4502 | case -NFS4ERR_ADMIN_REVOKED: | |
4503 | case -NFS4ERR_BAD_STATEID: | |
4504 | case -NFS4ERR_OPENMODE: | |
0400a6b0 | 4505 | nfs4_schedule_stateid_recovery(server, state); |
965b5d67 TM |
4506 | err = 0; |
4507 | goto out; | |
168667c4 TM |
4508 | case -EKEYEXPIRED: |
4509 | /* | |
4510 | * User RPCSEC_GSS context has expired. | |
4511 | * We cannot recover this stateid now, so | |
4512 | * skip it and allow recovery thread to | |
4513 | * proceed. | |
4514 | */ | |
4515 | err = 0; | |
4516 | goto out; | |
965b5d67 TM |
4517 | case -ENOMEM: |
4518 | case -NFS4ERR_DENIED: | |
4519 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
4520 | err = 0; | |
4521 | goto out; | |
d5122201 TM |
4522 | case -NFS4ERR_DELAY: |
4523 | break; | |
4524 | } | |
888e694c TM |
4525 | err = nfs4_handle_exception(server, err, &exception); |
4526 | } while (exception.retry); | |
4527 | out: | |
4528 | return err; | |
4529 | } | |
6b3b5496 | 4530 | |
d3c7b7cc TM |
4531 | static void nfs4_release_lockowner_release(void *calldata) |
4532 | { | |
4533 | kfree(calldata); | |
4534 | } | |
4535 | ||
4536 | const struct rpc_call_ops nfs4_release_lockowner_ops = { | |
4537 | .rpc_release = nfs4_release_lockowner_release, | |
4538 | }; | |
4539 | ||
4540 | void nfs4_release_lockowner(const struct nfs4_lock_state *lsp) | |
4541 | { | |
4542 | struct nfs_server *server = lsp->ls_state->owner->so_server; | |
4543 | struct nfs_release_lockowner_args *args; | |
4544 | struct rpc_message msg = { | |
4545 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
4546 | }; | |
4547 | ||
4548 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
4549 | return; | |
4550 | args = kmalloc(sizeof(*args), GFP_NOFS); | |
4551 | if (!args) | |
4552 | return; | |
4553 | args->lock_owner.clientid = server->nfs_client->cl_clientid; | |
4554 | args->lock_owner.id = lsp->ls_id.id; | |
d035c36c | 4555 | args->lock_owner.s_dev = server->s_dev; |
d3c7b7cc TM |
4556 | msg.rpc_argp = args; |
4557 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, args); | |
4558 | } | |
4559 | ||
aa1870af BF |
4560 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
4561 | ||
64c2ce8b AK |
4562 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
4563 | const void *buf, size_t buflen, | |
4564 | int flags, int type) | |
6b3b5496 | 4565 | { |
64c2ce8b AK |
4566 | if (strcmp(key, "") != 0) |
4567 | return -EINVAL; | |
4b580ee3 | 4568 | |
64c2ce8b | 4569 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4570 | } |
4571 | ||
64c2ce8b AK |
4572 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
4573 | void *buf, size_t buflen, int type) | |
6b3b5496 | 4574 | { |
64c2ce8b AK |
4575 | if (strcmp(key, "") != 0) |
4576 | return -EINVAL; | |
aa1870af | 4577 | |
64c2ce8b | 4578 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4579 | } |
4580 | ||
64c2ce8b AK |
4581 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
4582 | size_t list_len, const char *name, | |
4583 | size_t name_len, int type) | |
6b3b5496 | 4584 | { |
64c2ce8b | 4585 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 4586 | |
096455a2 BF |
4587 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
4588 | return 0; | |
64c2ce8b AK |
4589 | |
4590 | if (list && len <= list_len) | |
4591 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 4592 | return len; |
6b3b5496 BF |
4593 | } |
4594 | ||
69aaaae1 TM |
4595 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
4596 | { | |
4597 | if (!((fattr->valid & NFS_ATTR_FATTR_FILEID) && | |
4598 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
4599 | (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL))) | |
4600 | return; | |
4601 | ||
4602 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
4603 | NFS_ATTR_FATTR_NLINK; | |
4604 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; | |
4605 | fattr->nlink = 2; | |
4606 | } | |
4607 | ||
56659e99 | 4608 | int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, |
7aaa0b3b | 4609 | struct nfs4_fs_locations *fs_locations, struct page *page) |
683b57b4 TM |
4610 | { |
4611 | struct nfs_server *server = NFS_SERVER(dir); | |
4612 | u32 bitmask[2] = { | |
361e624f MN |
4613 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
4614 | [1] = FATTR4_WORD1_MOUNTED_ON_FILEID, | |
683b57b4 TM |
4615 | }; |
4616 | struct nfs4_fs_locations_arg args = { | |
4617 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 4618 | .name = name, |
683b57b4 TM |
4619 | .page = page, |
4620 | .bitmask = bitmask, | |
4621 | }; | |
22958463 BH |
4622 | struct nfs4_fs_locations_res res = { |
4623 | .fs_locations = fs_locations, | |
4624 | }; | |
683b57b4 TM |
4625 | struct rpc_message msg = { |
4626 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
4627 | .rpc_argp = &args, | |
22958463 | 4628 | .rpc_resp = &res, |
683b57b4 TM |
4629 | }; |
4630 | int status; | |
4631 | ||
3110ff80 | 4632 | dprintk("%s: start\n", __func__); |
c228fd3a | 4633 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 4634 | fs_locations->server = server; |
830b8e33 | 4635 | fs_locations->nlocations = 0; |
7c513058 | 4636 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
69aaaae1 | 4637 | nfs_fixup_referral_attributes(&fs_locations->fattr); |
3110ff80 | 4638 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
4639 | return status; |
4640 | } | |
4641 | ||
5a5ea0d4 BS |
4642 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) |
4643 | { | |
4644 | int status; | |
4645 | struct nfs4_secinfo_arg args = { | |
4646 | .dir_fh = NFS_FH(dir), | |
4647 | .name = name, | |
4648 | }; | |
4649 | struct nfs4_secinfo_res res = { | |
4650 | .flavors = flavors, | |
4651 | }; | |
4652 | struct rpc_message msg = { | |
4653 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
4654 | .rpc_argp = &args, | |
4655 | .rpc_resp = &res, | |
4656 | }; | |
4657 | ||
4658 | dprintk("NFS call secinfo %s\n", name->name); | |
4659 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); | |
4660 | dprintk("NFS reply secinfo: %d\n", status); | |
4661 | return status; | |
4662 | } | |
4663 | ||
4664 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) | |
4665 | { | |
4666 | struct nfs4_exception exception = { }; | |
4667 | int err; | |
4668 | do { | |
4669 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
4670 | _nfs4_proc_secinfo(dir, name, flavors), | |
4671 | &exception); | |
4672 | } while (exception.retry); | |
4673 | return err; | |
4674 | } | |
4675 | ||
557134a3 | 4676 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
4677 | /* |
4678 | * Check the exchange flags returned by the server for invalid flags, having | |
4679 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
4680 | * DS flags set. | |
4681 | */ | |
4682 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
4683 | { | |
4684 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
4685 | goto out_inval; | |
4686 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
4687 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
4688 | goto out_inval; | |
4689 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
4690 | goto out_inval; | |
4691 | return NFS_OK; | |
4692 | out_inval: | |
4693 | return -NFS4ERR_INVAL; | |
4694 | } | |
4695 | ||
99fe60d0 BH |
4696 | /* |
4697 | * nfs4_proc_exchange_id() | |
4698 | * | |
4699 | * Since the clientid has expired, all compounds using sessions | |
4700 | * associated with the stale clientid will be returning | |
4701 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
4702 | * be in some phase of session reset. | |
4703 | */ | |
4d643d1d | 4704 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
4705 | { |
4706 | nfs4_verifier verifier; | |
4707 | struct nfs41_exchange_id_args args = { | |
4708 | .client = clp, | |
357f54d6 | 4709 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, |
99fe60d0 BH |
4710 | }; |
4711 | struct nfs41_exchange_id_res res = { | |
4712 | .client = clp, | |
4713 | }; | |
4714 | int status; | |
4715 | struct rpc_message msg = { | |
4716 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
4717 | .rpc_argp = &args, | |
4718 | .rpc_resp = &res, | |
4719 | .rpc_cred = cred, | |
4720 | }; | |
4721 | __be32 *p; | |
4722 | ||
4723 | dprintk("--> %s\n", __func__); | |
4724 | BUG_ON(clp == NULL); | |
a7b72103 | 4725 | |
99fe60d0 BH |
4726 | p = (u32 *)verifier.data; |
4727 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); | |
4728 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
4729 | args.verifier = &verifier; | |
4730 | ||
c7a360b0 AA |
4731 | args.id_len = scnprintf(args.id, sizeof(args.id), |
4732 | "%s/%s.%s/%u", | |
4733 | clp->cl_ipaddr, | |
4734 | init_utsname()->nodename, | |
4735 | init_utsname()->domainname, | |
4736 | clp->cl_rpcclient->cl_auth->au_flavor); | |
99fe60d0 | 4737 | |
c7a360b0 AA |
4738 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); |
4739 | if (!status) | |
4740 | status = nfs4_check_cl_exchange_flags(clp->cl_exchange_flags); | |
99fe60d0 BH |
4741 | dprintk("<-- %s status= %d\n", __func__, status); |
4742 | return status; | |
4743 | } | |
4744 | ||
2050f0cc AA |
4745 | struct nfs4_get_lease_time_data { |
4746 | struct nfs4_get_lease_time_args *args; | |
4747 | struct nfs4_get_lease_time_res *res; | |
4748 | struct nfs_client *clp; | |
4749 | }; | |
4750 | ||
4751 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
4752 | void *calldata) | |
4753 | { | |
4754 | int ret; | |
4755 | struct nfs4_get_lease_time_data *data = | |
4756 | (struct nfs4_get_lease_time_data *)calldata; | |
4757 | ||
4758 | dprintk("--> %s\n", __func__); | |
689cf5c1 | 4759 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
2050f0cc AA |
4760 | /* just setup sequence, do not trigger session recovery |
4761 | since we're invoked within one */ | |
4762 | ret = nfs41_setup_sequence(data->clp->cl_session, | |
689cf5c1 AB |
4763 | &data->args->la_seq_args, |
4764 | &data->res->lr_seq_res, 0, task); | |
2050f0cc AA |
4765 | |
4766 | BUG_ON(ret == -EAGAIN); | |
4767 | rpc_call_start(task); | |
4768 | dprintk("<-- %s\n", __func__); | |
4769 | } | |
4770 | ||
4771 | /* | |
4772 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
4773 | * from sequence operation or clientid errors. | |
4774 | */ | |
4775 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
4776 | { | |
4777 | struct nfs4_get_lease_time_data *data = | |
4778 | (struct nfs4_get_lease_time_data *)calldata; | |
4779 | ||
4780 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
4781 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
4782 | return; | |
2050f0cc AA |
4783 | switch (task->tk_status) { |
4784 | case -NFS4ERR_DELAY: | |
4785 | case -NFS4ERR_GRACE: | |
4786 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
4787 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
4788 | task->tk_status = 0; | |
0110ee15 | 4789 | nfs_restart_rpc(task, data->clp); |
2050f0cc AA |
4790 | return; |
4791 | } | |
2050f0cc AA |
4792 | dprintk("<-- %s\n", __func__); |
4793 | } | |
4794 | ||
4795 | struct rpc_call_ops nfs4_get_lease_time_ops = { | |
4796 | .rpc_call_prepare = nfs4_get_lease_time_prepare, | |
4797 | .rpc_call_done = nfs4_get_lease_time_done, | |
4798 | }; | |
4799 | ||
4800 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
4801 | { | |
4802 | struct rpc_task *task; | |
4803 | struct nfs4_get_lease_time_args args; | |
4804 | struct nfs4_get_lease_time_res res = { | |
4805 | .lr_fsinfo = fsinfo, | |
4806 | }; | |
4807 | struct nfs4_get_lease_time_data data = { | |
4808 | .args = &args, | |
4809 | .res = &res, | |
4810 | .clp = clp, | |
4811 | }; | |
4812 | struct rpc_message msg = { | |
4813 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
4814 | .rpc_argp = &args, | |
4815 | .rpc_resp = &res, | |
4816 | }; | |
4817 | struct rpc_task_setup task_setup = { | |
4818 | .rpc_client = clp->cl_rpcclient, | |
4819 | .rpc_message = &msg, | |
4820 | .callback_ops = &nfs4_get_lease_time_ops, | |
4821 | .callback_data = &data | |
4822 | }; | |
4823 | int status; | |
4824 | ||
2050f0cc AA |
4825 | dprintk("--> %s\n", __func__); |
4826 | task = rpc_run_task(&task_setup); | |
4827 | ||
4828 | if (IS_ERR(task)) | |
4829 | status = PTR_ERR(task); | |
4830 | else { | |
4831 | status = task->tk_status; | |
4832 | rpc_put_task(task); | |
4833 | } | |
4834 | dprintk("<-- %s return %d\n", __func__, status); | |
4835 | ||
4836 | return status; | |
4837 | } | |
4838 | ||
b73dafa7 RL |
4839 | /* |
4840 | * Reset a slot table | |
4841 | */ | |
104aeba4 AA |
4842 | static int nfs4_reset_slot_table(struct nfs4_slot_table *tbl, u32 max_reqs, |
4843 | int ivalue) | |
ac72b7b3 | 4844 | { |
104aeba4 | 4845 | struct nfs4_slot *new = NULL; |
b73dafa7 | 4846 | int i; |
ac72b7b3 AA |
4847 | int ret = 0; |
4848 | ||
104aeba4 AA |
4849 | dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__, |
4850 | max_reqs, tbl->max_slots); | |
ac72b7b3 | 4851 | |
104aeba4 AA |
4852 | /* Does the newly negotiated max_reqs match the existing slot table? */ |
4853 | if (max_reqs != tbl->max_slots) { | |
4854 | ret = -ENOMEM; | |
4855 | new = kmalloc(max_reqs * sizeof(struct nfs4_slot), | |
8535b2be | 4856 | GFP_NOFS); |
104aeba4 AA |
4857 | if (!new) |
4858 | goto out; | |
4859 | ret = 0; | |
4860 | kfree(tbl->slots); | |
ac72b7b3 AA |
4861 | } |
4862 | spin_lock(&tbl->slot_tbl_lock); | |
104aeba4 AA |
4863 | if (new) { |
4864 | tbl->slots = new; | |
4865 | tbl->max_slots = max_reqs; | |
4866 | } | |
4867 | for (i = 0; i < tbl->max_slots; ++i) | |
b73dafa7 | 4868 | tbl->slots[i].seq_nr = ivalue; |
ac72b7b3 AA |
4869 | spin_unlock(&tbl->slot_tbl_lock); |
4870 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, | |
4871 | tbl, tbl->slots, tbl->max_slots); | |
4872 | out: | |
4873 | dprintk("<-- %s: return %d\n", __func__, ret); | |
4874 | return ret; | |
4875 | } | |
4876 | ||
b73dafa7 RL |
4877 | /* |
4878 | * Reset the forechannel and backchannel slot tables | |
4879 | */ | |
4880 | static int nfs4_reset_slot_tables(struct nfs4_session *session) | |
4881 | { | |
4882 | int status; | |
4883 | ||
4884 | status = nfs4_reset_slot_table(&session->fc_slot_table, | |
104aeba4 | 4885 | session->fc_attrs.max_reqs, 1); |
f8625a6a RL |
4886 | if (status) |
4887 | return status; | |
4888 | ||
4889 | status = nfs4_reset_slot_table(&session->bc_slot_table, | |
104aeba4 | 4890 | session->bc_attrs.max_reqs, 0); |
b73dafa7 RL |
4891 | return status; |
4892 | } | |
4893 | ||
f8625a6a RL |
4894 | /* Destroy the slot table */ |
4895 | static void nfs4_destroy_slot_tables(struct nfs4_session *session) | |
4896 | { | |
4897 | if (session->fc_slot_table.slots != NULL) { | |
4898 | kfree(session->fc_slot_table.slots); | |
4899 | session->fc_slot_table.slots = NULL; | |
4900 | } | |
4901 | if (session->bc_slot_table.slots != NULL) { | |
4902 | kfree(session->bc_slot_table.slots); | |
4903 | session->bc_slot_table.slots = NULL; | |
4904 | } | |
4905 | return; | |
4906 | } | |
4907 | ||
fc931582 AA |
4908 | /* |
4909 | * Initialize slot table | |
4910 | */ | |
050047ce RL |
4911 | static int nfs4_init_slot_table(struct nfs4_slot_table *tbl, |
4912 | int max_slots, int ivalue) | |
fc931582 | 4913 | { |
fc931582 AA |
4914 | struct nfs4_slot *slot; |
4915 | int ret = -ENOMEM; | |
4916 | ||
4917 | BUG_ON(max_slots > NFS4_MAX_SLOT_TABLE); | |
4918 | ||
050047ce | 4919 | dprintk("--> %s: max_reqs=%u\n", __func__, max_slots); |
fc931582 | 4920 | |
8535b2be | 4921 | slot = kcalloc(max_slots, sizeof(struct nfs4_slot), GFP_NOFS); |
fc931582 AA |
4922 | if (!slot) |
4923 | goto out; | |
fc931582 AA |
4924 | ret = 0; |
4925 | ||
4926 | spin_lock(&tbl->slot_tbl_lock); | |
fc931582 AA |
4927 | tbl->max_slots = max_slots; |
4928 | tbl->slots = slot; | |
4929 | tbl->highest_used_slotid = -1; /* no slot is currently used */ | |
4930 | spin_unlock(&tbl->slot_tbl_lock); | |
4931 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, | |
4932 | tbl, tbl->slots, tbl->max_slots); | |
4933 | out: | |
4934 | dprintk("<-- %s: return %d\n", __func__, ret); | |
4935 | return ret; | |
fc931582 AA |
4936 | } |
4937 | ||
050047ce RL |
4938 | /* |
4939 | * Initialize the forechannel and backchannel tables | |
4940 | */ | |
4941 | static int nfs4_init_slot_tables(struct nfs4_session *session) | |
4942 | { | |
f26468fb TM |
4943 | struct nfs4_slot_table *tbl; |
4944 | int status = 0; | |
050047ce | 4945 | |
f26468fb TM |
4946 | tbl = &session->fc_slot_table; |
4947 | if (tbl->slots == NULL) { | |
4948 | status = nfs4_init_slot_table(tbl, | |
4949 | session->fc_attrs.max_reqs, 1); | |
4950 | if (status) | |
4951 | return status; | |
4952 | } | |
050047ce | 4953 | |
f26468fb TM |
4954 | tbl = &session->bc_slot_table; |
4955 | if (tbl->slots == NULL) { | |
4956 | status = nfs4_init_slot_table(tbl, | |
4957 | session->bc_attrs.max_reqs, 0); | |
4958 | if (status) | |
4959 | nfs4_destroy_slot_tables(session); | |
4960 | } | |
f8625a6a RL |
4961 | |
4962 | return status; | |
557134a3 AA |
4963 | } |
4964 | ||
4965 | struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) | |
4966 | { | |
4967 | struct nfs4_session *session; | |
4968 | struct nfs4_slot_table *tbl; | |
4969 | ||
8535b2be | 4970 | session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); |
557134a3 AA |
4971 | if (!session) |
4972 | return NULL; | |
76db6d95 | 4973 | |
557134a3 | 4974 | tbl = &session->fc_slot_table; |
9dfdf404 | 4975 | tbl->highest_used_slotid = -1; |
557134a3 | 4976 | spin_lock_init(&tbl->slot_tbl_lock); |
689cf5c1 | 4977 | rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table"); |
42acd021 | 4978 | init_completion(&tbl->complete); |
f8625a6a RL |
4979 | |
4980 | tbl = &session->bc_slot_table; | |
9dfdf404 | 4981 | tbl->highest_used_slotid = -1; |
f8625a6a RL |
4982 | spin_lock_init(&tbl->slot_tbl_lock); |
4983 | rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table"); | |
42acd021 | 4984 | init_completion(&tbl->complete); |
f8625a6a | 4985 | |
1055d76d TM |
4986 | session->session_state = 1<<NFS4_SESSION_INITING; |
4987 | ||
557134a3 AA |
4988 | session->clp = clp; |
4989 | return session; | |
4990 | } | |
4991 | ||
4992 | void nfs4_destroy_session(struct nfs4_session *session) | |
4993 | { | |
5a0ffe54 AA |
4994 | nfs4_proc_destroy_session(session); |
4995 | dprintk("%s Destroy backchannel for xprt %p\n", | |
4996 | __func__, session->clp->cl_rpcclient->cl_xprt); | |
4997 | xprt_destroy_backchannel(session->clp->cl_rpcclient->cl_xprt, | |
4998 | NFS41_BC_MIN_CALLBACKS); | |
f8625a6a | 4999 | nfs4_destroy_slot_tables(session); |
557134a3 AA |
5000 | kfree(session); |
5001 | } | |
5002 | ||
fc931582 AA |
5003 | /* |
5004 | * Initialize the values to be used by the client in CREATE_SESSION | |
5005 | * If nfs4_init_session set the fore channel request and response sizes, | |
5006 | * use them. | |
5007 | * | |
5008 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
5009 | * always set csa_cachethis to FALSE because the current implementation | |
5010 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
5011 | */ | |
5012 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
5013 | { | |
5014 | struct nfs4_session *session = args->client->cl_session; | |
5015 | unsigned int mxrqst_sz = session->fc_attrs.max_rqst_sz, | |
5016 | mxresp_sz = session->fc_attrs.max_resp_sz; | |
5017 | ||
5018 | if (mxrqst_sz == 0) | |
5019 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
5020 | if (mxresp_sz == 0) | |
5021 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
5022 | /* Fore channel attributes */ | |
5023 | args->fc_attrs.headerpadsz = 0; | |
5024 | args->fc_attrs.max_rqst_sz = mxrqst_sz; | |
5025 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 AA |
5026 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
5027 | args->fc_attrs.max_reqs = session->clp->cl_rpcclient->cl_xprt->max_reqs; | |
5028 | ||
5029 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 5030 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
5031 | __func__, |
5032 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 5033 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
5034 | |
5035 | /* Back channel attributes */ | |
5036 | args->bc_attrs.headerpadsz = 0; | |
5037 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; | |
5038 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
5039 | args->bc_attrs.max_resp_sz_cached = 0; | |
5040 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
5041 | args->bc_attrs.max_reqs = 1; | |
5042 | ||
5043 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
5044 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
5045 | __func__, | |
5046 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
5047 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
5048 | args->bc_attrs.max_reqs); | |
5049 | } | |
5050 | ||
43c2e885 | 5051 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 5052 | { |
43c2e885 BF |
5053 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
5054 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
5055 | ||
5056 | if (rcvd->headerpadsz > sent->headerpadsz) | |
5057 | return -EINVAL; | |
5058 | if (rcvd->max_resp_sz > sent->max_resp_sz) | |
5059 | return -EINVAL; | |
5060 | /* | |
5061 | * Our requested max_ops is the minimum we need; we're not | |
5062 | * prepared to break up compounds into smaller pieces than that. | |
5063 | * So, no point even trying to continue if the server won't | |
5064 | * cooperate: | |
5065 | */ | |
5066 | if (rcvd->max_ops < sent->max_ops) | |
5067 | return -EINVAL; | |
5068 | if (rcvd->max_reqs == 0) | |
5069 | return -EINVAL; | |
5070 | return 0; | |
8d35301d AA |
5071 | } |
5072 | ||
43c2e885 BF |
5073 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
5074 | { | |
5075 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
5076 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 5077 | |
43c2e885 BF |
5078 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
5079 | return -EINVAL; | |
5080 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
5081 | return -EINVAL; | |
5082 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
5083 | return -EINVAL; | |
5084 | /* These would render the backchannel useless: */ | |
5085 | if (rcvd->max_ops == 0) | |
5086 | return -EINVAL; | |
5087 | if (rcvd->max_reqs == 0) | |
5088 | return -EINVAL; | |
5089 | return 0; | |
5090 | } | |
8d35301d | 5091 | |
8d35301d AA |
5092 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
5093 | struct nfs4_session *session) | |
5094 | { | |
43c2e885 | 5095 | int ret; |
8d35301d | 5096 | |
43c2e885 BF |
5097 | ret = nfs4_verify_fore_channel_attrs(args, session); |
5098 | if (ret) | |
5099 | return ret; | |
5100 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
5101 | } |
5102 | ||
fc931582 AA |
5103 | static int _nfs4_proc_create_session(struct nfs_client *clp) |
5104 | { | |
5105 | struct nfs4_session *session = clp->cl_session; | |
5106 | struct nfs41_create_session_args args = { | |
5107 | .client = clp, | |
5108 | .cb_program = NFS4_CALLBACK, | |
5109 | }; | |
5110 | struct nfs41_create_session_res res = { | |
5111 | .client = clp, | |
5112 | }; | |
5113 | struct rpc_message msg = { | |
5114 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
5115 | .rpc_argp = &args, | |
5116 | .rpc_resp = &res, | |
5117 | }; | |
5118 | int status; | |
5119 | ||
5120 | nfs4_init_channel_attrs(&args); | |
0f91421e | 5121 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 AA |
5122 | |
5123 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, 0); | |
5124 | ||
8d35301d AA |
5125 | if (!status) |
5126 | /* Verify the session's negotiated channel_attrs values */ | |
5127 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
5128 | if (!status) { |
5129 | /* Increment the clientid slot sequence id */ | |
5130 | clp->cl_seqid++; | |
5131 | } | |
5132 | ||
5133 | return status; | |
5134 | } | |
5135 | ||
5136 | /* | |
5137 | * Issues a CREATE_SESSION operation to the server. | |
5138 | * It is the responsibility of the caller to verify the session is | |
5139 | * expired before calling this routine. | |
5140 | */ | |
f26468fb | 5141 | int nfs4_proc_create_session(struct nfs_client *clp) |
fc931582 AA |
5142 | { |
5143 | int status; | |
5144 | unsigned *ptr; | |
fc931582 | 5145 | struct nfs4_session *session = clp->cl_session; |
7d6d63d6 RL |
5146 | long timeout = 0; |
5147 | int err; | |
fc931582 AA |
5148 | |
5149 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
5150 | ||
7d6d63d6 RL |
5151 | do { |
5152 | status = _nfs4_proc_create_session(clp); | |
5153 | if (status == -NFS4ERR_DELAY) { | |
5154 | err = nfs4_delay(clp->cl_rpcclient, &timeout); | |
5155 | if (err) | |
5156 | status = err; | |
5157 | } | |
5158 | } while (status == -NFS4ERR_DELAY); | |
5159 | ||
fc931582 AA |
5160 | if (status) |
5161 | goto out; | |
5162 | ||
f26468fb TM |
5163 | /* Init and reset the fore channel */ |
5164 | status = nfs4_init_slot_tables(session); | |
5165 | dprintk("slot table initialization returned %d\n", status); | |
5166 | if (status) | |
5167 | goto out; | |
5168 | status = nfs4_reset_slot_tables(session); | |
5169 | dprintk("slot table reset returned %d\n", status); | |
fc931582 AA |
5170 | if (status) |
5171 | goto out; | |
5172 | ||
5173 | ptr = (unsigned *)&session->sess_id.data[0]; | |
5174 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
5175 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
5176 | out: |
5177 | dprintk("<-- %s\n", __func__); | |
5178 | return status; | |
5179 | } | |
5180 | ||
0f3e66c6 AA |
5181 | /* |
5182 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
5183 | * The caller must serialize access to this routine. | |
5184 | */ | |
5185 | int nfs4_proc_destroy_session(struct nfs4_session *session) | |
5186 | { | |
5187 | int status = 0; | |
5188 | struct rpc_message msg; | |
5189 | ||
5190 | dprintk("--> nfs4_proc_destroy_session\n"); | |
5191 | ||
5192 | /* session is still being setup */ | |
5193 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
5194 | return status; | |
5195 | ||
5196 | msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION]; | |
5197 | msg.rpc_argp = session; | |
5198 | msg.rpc_resp = NULL; | |
5199 | msg.rpc_cred = NULL; | |
5200 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, 0); | |
5201 | ||
5202 | if (status) | |
5203 | printk(KERN_WARNING | |
5204 | "Got error %d from the server on DESTROY_SESSION. " | |
5205 | "Session has been destroyed regardless...\n", status); | |
5206 | ||
5207 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
5208 | return status; | |
5209 | } | |
5210 | ||
fccba804 TM |
5211 | int nfs4_init_session(struct nfs_server *server) |
5212 | { | |
5213 | struct nfs_client *clp = server->nfs_client; | |
2449ea2e | 5214 | struct nfs4_session *session; |
68bf05ef | 5215 | unsigned int rsize, wsize; |
fccba804 TM |
5216 | int ret; |
5217 | ||
5218 | if (!nfs4_has_session(clp)) | |
5219 | return 0; | |
5220 | ||
1055d76d TM |
5221 | session = clp->cl_session; |
5222 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5223 | return 0; | |
5224 | ||
68bf05ef AA |
5225 | rsize = server->rsize; |
5226 | if (rsize == 0) | |
5227 | rsize = NFS_MAX_FILE_IO_SIZE; | |
5228 | wsize = server->wsize; | |
5229 | if (wsize == 0) | |
5230 | wsize = NFS_MAX_FILE_IO_SIZE; | |
5231 | ||
68bf05ef AA |
5232 | session->fc_attrs.max_rqst_sz = wsize + nfs41_maxwrite_overhead; |
5233 | session->fc_attrs.max_resp_sz = rsize + nfs41_maxread_overhead; | |
2449ea2e | 5234 | |
fccba804 TM |
5235 | ret = nfs4_recover_expired_lease(server); |
5236 | if (!ret) | |
5237 | ret = nfs4_check_client_ready(clp); | |
5238 | return ret; | |
5239 | } | |
5240 | ||
d83217c1 AA |
5241 | int nfs4_init_ds_session(struct nfs_client *clp) |
5242 | { | |
5243 | struct nfs4_session *session = clp->cl_session; | |
5244 | int ret; | |
5245 | ||
5246 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5247 | return 0; | |
5248 | ||
5249 | ret = nfs4_client_recover_expired_lease(clp); | |
5250 | if (!ret) | |
5251 | /* Test for the DS role */ | |
5252 | if (!is_ds_client(clp)) | |
5253 | ret = -ENODEV; | |
5254 | if (!ret) | |
5255 | ret = nfs4_check_client_ready(clp); | |
5256 | return ret; | |
5257 | ||
5258 | } | |
5259 | EXPORT_SYMBOL_GPL(nfs4_init_ds_session); | |
5260 | ||
5261 | ||
fc01cea9 AA |
5262 | /* |
5263 | * Renew the cl_session lease. | |
5264 | */ | |
d5f8d3fe TM |
5265 | struct nfs4_sequence_data { |
5266 | struct nfs_client *clp; | |
5267 | struct nfs4_sequence_args args; | |
5268 | struct nfs4_sequence_res res; | |
5269 | }; | |
5270 | ||
dc96aef9 AB |
5271 | static void nfs41_sequence_release(void *data) |
5272 | { | |
d5f8d3fe TM |
5273 | struct nfs4_sequence_data *calldata = data; |
5274 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 5275 | |
7135840f AB |
5276 | if (atomic_read(&clp->cl_count) > 1) |
5277 | nfs4_schedule_state_renewal(clp); | |
5278 | nfs_put_client(clp); | |
d5f8d3fe | 5279 | kfree(calldata); |
dc96aef9 AB |
5280 | } |
5281 | ||
aa5190d0 TM |
5282 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5283 | { | |
5284 | switch(task->tk_status) { | |
5285 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5286 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5287 | return -EAGAIN; | |
5288 | default: | |
0400a6b0 | 5289 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5290 | } |
5291 | return 0; | |
5292 | } | |
5293 | ||
dc96aef9 | 5294 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 5295 | { |
d5f8d3fe TM |
5296 | struct nfs4_sequence_data *calldata = data; |
5297 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 5298 | |
14516c3a TM |
5299 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
5300 | return; | |
fc01cea9 AA |
5301 | |
5302 | if (task->tk_status < 0) { | |
5303 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
5304 | if (atomic_read(&clp->cl_count) == 1) |
5305 | goto out; | |
fc01cea9 | 5306 | |
aa5190d0 TM |
5307 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
5308 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
5309 | return; |
5310 | } | |
5311 | } | |
fc01cea9 | 5312 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 5313 | out: |
fc01cea9 AA |
5314 | dprintk("<-- %s\n", __func__); |
5315 | } | |
5316 | ||
5317 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
5318 | { | |
d5f8d3fe TM |
5319 | struct nfs4_sequence_data *calldata = data; |
5320 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
5321 | struct nfs4_sequence_args *args; |
5322 | struct nfs4_sequence_res *res; | |
5323 | ||
fc01cea9 AA |
5324 | args = task->tk_msg.rpc_argp; |
5325 | res = task->tk_msg.rpc_resp; | |
5326 | ||
035168ab | 5327 | if (nfs41_setup_sequence(clp->cl_session, args, res, 0, task)) |
fc01cea9 AA |
5328 | return; |
5329 | rpc_call_start(task); | |
5330 | } | |
5331 | ||
5332 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
5333 | .rpc_call_done = nfs41_sequence_call_done, | |
5334 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 5335 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
5336 | }; |
5337 | ||
71ac6da9 | 5338 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) |
fc01cea9 | 5339 | { |
d5f8d3fe | 5340 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
5341 | struct rpc_message msg = { |
5342 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
5343 | .rpc_cred = cred, | |
5344 | }; | |
71ac6da9 TM |
5345 | struct rpc_task_setup task_setup_data = { |
5346 | .rpc_client = clp->cl_rpcclient, | |
5347 | .rpc_message = &msg, | |
5348 | .callback_ops = &nfs41_sequence_ops, | |
5349 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT, | |
5350 | }; | |
fc01cea9 | 5351 | |
7135840f | 5352 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 5353 | return ERR_PTR(-EIO); |
dfb4f309 | 5354 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 5355 | if (calldata == NULL) { |
7135840f | 5356 | nfs_put_client(clp); |
71ac6da9 | 5357 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 5358 | } |
d5f8d3fe TM |
5359 | msg.rpc_argp = &calldata->args; |
5360 | msg.rpc_resp = &calldata->res; | |
5361 | calldata->clp = clp; | |
71ac6da9 | 5362 | task_setup_data.callback_data = calldata; |
fc01cea9 | 5363 | |
71ac6da9 TM |
5364 | return rpc_run_task(&task_setup_data); |
5365 | } | |
5366 | ||
5367 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5368 | { | |
5369 | struct rpc_task *task; | |
5370 | int ret = 0; | |
5371 | ||
5372 | task = _nfs41_proc_sequence(clp, cred); | |
5373 | if (IS_ERR(task)) | |
5374 | ret = PTR_ERR(task); | |
5375 | else | |
bf294b41 | 5376 | rpc_put_task_async(task); |
71ac6da9 TM |
5377 | dprintk("<-- %s status=%d\n", __func__, ret); |
5378 | return ret; | |
5379 | } | |
5380 | ||
5381 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5382 | { | |
5383 | struct rpc_task *task; | |
5384 | int ret; | |
5385 | ||
5386 | task = _nfs41_proc_sequence(clp, cred); | |
5387 | if (IS_ERR(task)) { | |
5388 | ret = PTR_ERR(task); | |
5389 | goto out; | |
5390 | } | |
5391 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
5392 | if (!ret) { |
5393 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
5394 | ||
5395 | if (task->tk_status == 0) | |
5396 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 5397 | ret = task->tk_status; |
b4410c2f | 5398 | } |
71ac6da9 TM |
5399 | rpc_put_task(task); |
5400 | out: | |
5401 | dprintk("<-- %s status=%d\n", __func__, ret); | |
5402 | return ret; | |
fc01cea9 AA |
5403 | } |
5404 | ||
fce5c838 RL |
5405 | struct nfs4_reclaim_complete_data { |
5406 | struct nfs_client *clp; | |
5407 | struct nfs41_reclaim_complete_args arg; | |
5408 | struct nfs41_reclaim_complete_res res; | |
5409 | }; | |
5410 | ||
5411 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
5412 | { | |
5413 | struct nfs4_reclaim_complete_data *calldata = data; | |
5414 | ||
b257957e | 5415 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
035168ab TM |
5416 | if (nfs41_setup_sequence(calldata->clp->cl_session, |
5417 | &calldata->arg.seq_args, | |
fce5c838 RL |
5418 | &calldata->res.seq_res, 0, task)) |
5419 | return; | |
5420 | ||
5421 | rpc_call_start(task); | |
5422 | } | |
5423 | ||
aa5190d0 TM |
5424 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5425 | { | |
5426 | switch(task->tk_status) { | |
5427 | case 0: | |
5428 | case -NFS4ERR_COMPLETE_ALREADY: | |
5429 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
5430 | break; | |
5431 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5432 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5433 | return -EAGAIN; | |
5434 | default: | |
0400a6b0 | 5435 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5436 | } |
5437 | return 0; | |
5438 | } | |
5439 | ||
fce5c838 RL |
5440 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
5441 | { | |
5442 | struct nfs4_reclaim_complete_data *calldata = data; | |
5443 | struct nfs_client *clp = calldata->clp; | |
5444 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
5445 | ||
5446 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5447 | if (!nfs41_sequence_done(task, res)) |
5448 | return; | |
fce5c838 | 5449 | |
aa5190d0 TM |
5450 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
5451 | rpc_restart_call_prepare(task); | |
5452 | return; | |
5453 | } | |
fce5c838 RL |
5454 | dprintk("<-- %s\n", __func__); |
5455 | } | |
5456 | ||
5457 | static void nfs4_free_reclaim_complete_data(void *data) | |
5458 | { | |
5459 | struct nfs4_reclaim_complete_data *calldata = data; | |
5460 | ||
5461 | kfree(calldata); | |
5462 | } | |
5463 | ||
5464 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
5465 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
5466 | .rpc_call_done = nfs4_reclaim_complete_done, | |
5467 | .rpc_release = nfs4_free_reclaim_complete_data, | |
5468 | }; | |
5469 | ||
5470 | /* | |
5471 | * Issue a global reclaim complete. | |
5472 | */ | |
5473 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
5474 | { | |
5475 | struct nfs4_reclaim_complete_data *calldata; | |
5476 | struct rpc_task *task; | |
5477 | struct rpc_message msg = { | |
5478 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
5479 | }; | |
5480 | struct rpc_task_setup task_setup_data = { | |
5481 | .rpc_client = clp->cl_rpcclient, | |
5482 | .rpc_message = &msg, | |
5483 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
5484 | .flags = RPC_TASK_ASYNC, | |
5485 | }; | |
5486 | int status = -ENOMEM; | |
5487 | ||
5488 | dprintk("--> %s\n", __func__); | |
8535b2be | 5489 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
5490 | if (calldata == NULL) |
5491 | goto out; | |
5492 | calldata->clp = clp; | |
5493 | calldata->arg.one_fs = 0; | |
fce5c838 RL |
5494 | |
5495 | msg.rpc_argp = &calldata->arg; | |
5496 | msg.rpc_resp = &calldata->res; | |
5497 | task_setup_data.callback_data = calldata; | |
5498 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 5499 | if (IS_ERR(task)) { |
fce5c838 | 5500 | status = PTR_ERR(task); |
acf82b85 DC |
5501 | goto out; |
5502 | } | |
c34c32ea AA |
5503 | status = nfs4_wait_for_completion_rpc_task(task); |
5504 | if (status == 0) | |
5505 | status = task->tk_status; | |
fce5c838 | 5506 | rpc_put_task(task); |
acf82b85 | 5507 | return 0; |
fce5c838 RL |
5508 | out: |
5509 | dprintk("<-- %s status=%d\n", __func__, status); | |
5510 | return status; | |
5511 | } | |
b1f69b75 AA |
5512 | |
5513 | static void | |
5514 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
5515 | { | |
5516 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 5517 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
b1f69b75 AA |
5518 | |
5519 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
5520 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
5521 | * right now covering the LAYOUTGET we are about to send. | |
5522 | * However, that is not so catastrophic, and there seems | |
5523 | * to be no way to prevent it completely. | |
5524 | */ | |
b1f69b75 AA |
5525 | if (nfs4_setup_sequence(server, &lgp->args.seq_args, |
5526 | &lgp->res.seq_res, 0, task)) | |
5527 | return; | |
cf7d63f1 FI |
5528 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
5529 | NFS_I(lgp->args.inode)->layout, | |
5530 | lgp->args.ctx->state)) { | |
5531 | rpc_exit(task, NFS4_OK); | |
5532 | return; | |
5533 | } | |
b1f69b75 AA |
5534 | rpc_call_start(task); |
5535 | } | |
5536 | ||
5537 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
5538 | { | |
5539 | struct nfs4_layoutget *lgp = calldata; | |
5540 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5541 | ||
5542 | dprintk("--> %s\n", __func__); | |
5543 | ||
5544 | if (!nfs4_sequence_done(task, &lgp->res.seq_res)) | |
5545 | return; | |
5546 | ||
5547 | switch (task->tk_status) { | |
5548 | case 0: | |
5549 | break; | |
5550 | case -NFS4ERR_LAYOUTTRYLATER: | |
5551 | case -NFS4ERR_RECALLCONFLICT: | |
5552 | task->tk_status = -NFS4ERR_DELAY; | |
5553 | /* Fall through */ | |
5554 | default: | |
5555 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
5556 | rpc_restart_call_prepare(task); | |
5557 | return; | |
5558 | } | |
5559 | } | |
b1f69b75 AA |
5560 | dprintk("<-- %s\n", __func__); |
5561 | } | |
5562 | ||
5563 | static void nfs4_layoutget_release(void *calldata) | |
5564 | { | |
5565 | struct nfs4_layoutget *lgp = calldata; | |
5566 | ||
5567 | dprintk("--> %s\n", __func__); | |
b1f69b75 AA |
5568 | if (lgp->res.layout.buf != NULL) |
5569 | free_page((unsigned long) lgp->res.layout.buf); | |
5570 | put_nfs_open_context(lgp->args.ctx); | |
5571 | kfree(calldata); | |
5572 | dprintk("<-- %s\n", __func__); | |
5573 | } | |
5574 | ||
5575 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
5576 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
5577 | .rpc_call_done = nfs4_layoutget_done, | |
5578 | .rpc_release = nfs4_layoutget_release, | |
5579 | }; | |
5580 | ||
5581 | int nfs4_proc_layoutget(struct nfs4_layoutget *lgp) | |
5582 | { | |
5583 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5584 | struct rpc_task *task; | |
5585 | struct rpc_message msg = { | |
5586 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
5587 | .rpc_argp = &lgp->args, | |
5588 | .rpc_resp = &lgp->res, | |
5589 | }; | |
5590 | struct rpc_task_setup task_setup_data = { | |
5591 | .rpc_client = server->client, | |
5592 | .rpc_message = &msg, | |
5593 | .callback_ops = &nfs4_layoutget_call_ops, | |
5594 | .callback_data = lgp, | |
5595 | .flags = RPC_TASK_ASYNC, | |
5596 | }; | |
5597 | int status = 0; | |
5598 | ||
5599 | dprintk("--> %s\n", __func__); | |
5600 | ||
5601 | lgp->res.layout.buf = (void *)__get_free_page(GFP_NOFS); | |
5602 | if (lgp->res.layout.buf == NULL) { | |
5603 | nfs4_layoutget_release(lgp); | |
5604 | return -ENOMEM; | |
5605 | } | |
5606 | ||
5607 | lgp->res.seq_res.sr_slot = NULL; | |
5608 | task = rpc_run_task(&task_setup_data); | |
5609 | if (IS_ERR(task)) | |
5610 | return PTR_ERR(task); | |
5611 | status = nfs4_wait_for_completion_rpc_task(task); | |
c31663d4 FI |
5612 | if (status == 0) |
5613 | status = task->tk_status; | |
5614 | if (status == 0) | |
5615 | status = pnfs_layout_process(lgp); | |
b1f69b75 AA |
5616 | rpc_put_task(task); |
5617 | dprintk("<-- %s status=%d\n", __func__, status); | |
5618 | return status; | |
5619 | } | |
5620 | ||
5621 | static int | |
5622 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
5623 | { | |
5624 | struct nfs4_getdeviceinfo_args args = { | |
5625 | .pdev = pdev, | |
5626 | }; | |
5627 | struct nfs4_getdeviceinfo_res res = { | |
5628 | .pdev = pdev, | |
5629 | }; | |
5630 | struct rpc_message msg = { | |
5631 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
5632 | .rpc_argp = &args, | |
5633 | .rpc_resp = &res, | |
5634 | }; | |
5635 | int status; | |
5636 | ||
5637 | dprintk("--> %s\n", __func__); | |
7c513058 | 5638 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
5639 | dprintk("<-- %s status=%d\n", __func__, status); |
5640 | ||
5641 | return status; | |
5642 | } | |
5643 | ||
5644 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
5645 | { | |
5646 | struct nfs4_exception exception = { }; | |
5647 | int err; | |
5648 | ||
5649 | do { | |
5650 | err = nfs4_handle_exception(server, | |
5651 | _nfs4_proc_getdeviceinfo(server, pdev), | |
5652 | &exception); | |
5653 | } while (exception.retry); | |
5654 | return err; | |
5655 | } | |
5656 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
5657 | ||
557134a3 AA |
5658 | #endif /* CONFIG_NFS_V4_1 */ |
5659 | ||
591d71cb | 5660 | struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 5661 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 5662 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
5663 | .recover_open = nfs4_open_reclaim, |
5664 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 5665 | .establish_clid = nfs4_init_clientid, |
90a16617 | 5666 | .get_clid_cred = nfs4_get_setclientid_cred, |
1da177e4 LT |
5667 | }; |
5668 | ||
591d71cb AA |
5669 | #if defined(CONFIG_NFS_V4_1) |
5670 | struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { | |
5671 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, | |
5672 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
5673 | .recover_open = nfs4_open_reclaim, | |
5674 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 5675 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 5676 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 5677 | .reclaim_complete = nfs41_proc_reclaim_complete, |
591d71cb AA |
5678 | }; |
5679 | #endif /* CONFIG_NFS_V4_1 */ | |
5680 | ||
5681 | struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { | |
5682 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, | |
5683 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
5684 | .recover_open = nfs4_open_expired, | |
5685 | .recover_lock = nfs4_lock_expired, | |
5686 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 5687 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
5688 | }; |
5689 | ||
5690 | #if defined(CONFIG_NFS_V4_1) | |
5691 | struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { | |
7eff03ae | 5692 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 5693 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
1da177e4 LT |
5694 | .recover_open = nfs4_open_expired, |
5695 | .recover_lock = nfs4_lock_expired, | |
4d643d1d | 5696 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 5697 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 5698 | }; |
591d71cb | 5699 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 5700 | |
29fba38b BH |
5701 | struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
5702 | .sched_state_renewal = nfs4_proc_async_renew, | |
a7b72103 | 5703 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 5704 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
5705 | }; |
5706 | ||
5707 | #if defined(CONFIG_NFS_V4_1) | |
5708 | struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { | |
5709 | .sched_state_renewal = nfs41_proc_async_sequence, | |
a7b72103 | 5710 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 5711 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
5712 | }; |
5713 | #endif | |
5714 | ||
97dc1359 TM |
5715 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
5716 | .minor_version = 0, | |
5717 | .call_sync = _nfs4_call_sync, | |
e047a10c | 5718 | .validate_stateid = nfs4_validate_delegation_stateid, |
c48f4f35 TM |
5719 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
5720 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
5721 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
5722 | }; |
5723 | ||
5724 | #if defined(CONFIG_NFS_V4_1) | |
5725 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
5726 | .minor_version = 1, | |
5727 | .call_sync = _nfs4_call_sync_session, | |
e047a10c | 5728 | .validate_stateid = nfs41_validate_delegation_stateid, |
c48f4f35 TM |
5729 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
5730 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
5731 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
5732 | }; |
5733 | #endif | |
5734 | ||
97dc1359 TM |
5735 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
5736 | [0] = &nfs_v4_0_minor_ops, | |
5737 | #if defined(CONFIG_NFS_V4_1) | |
5738 | [1] = &nfs_v4_1_minor_ops, | |
5739 | #endif | |
5740 | }; | |
5741 | ||
92e1d5be | 5742 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
5743 | .permission = nfs_permission, |
5744 | .getattr = nfs_getattr, | |
5745 | .setattr = nfs_setattr, | |
64c2ce8b AK |
5746 | .getxattr = generic_getxattr, |
5747 | .setxattr = generic_setxattr, | |
5748 | .listxattr = generic_listxattr, | |
5749 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
5750 | }; |
5751 | ||
509de811 | 5752 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
5753 | .version = 4, /* protocol version */ |
5754 | .dentry_ops = &nfs4_dentry_operations, | |
5755 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 5756 | .file_inode_ops = &nfs4_file_inode_operations, |
1da177e4 LT |
5757 | .getroot = nfs4_proc_get_root, |
5758 | .getattr = nfs4_proc_getattr, | |
5759 | .setattr = nfs4_proc_setattr, | |
2b3de441 | 5760 | .lookupfh = nfs4_proc_lookupfh, |
1da177e4 LT |
5761 | .lookup = nfs4_proc_lookup, |
5762 | .access = nfs4_proc_access, | |
5763 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
5764 | .create = nfs4_proc_create, |
5765 | .remove = nfs4_proc_remove, | |
5766 | .unlink_setup = nfs4_proc_unlink_setup, | |
5767 | .unlink_done = nfs4_proc_unlink_done, | |
5768 | .rename = nfs4_proc_rename, | |
d3d4152a JL |
5769 | .rename_setup = nfs4_proc_rename_setup, |
5770 | .rename_done = nfs4_proc_rename_done, | |
1da177e4 LT |
5771 | .link = nfs4_proc_link, |
5772 | .symlink = nfs4_proc_symlink, | |
5773 | .mkdir = nfs4_proc_mkdir, | |
5774 | .rmdir = nfs4_proc_remove, | |
5775 | .readdir = nfs4_proc_readdir, | |
5776 | .mknod = nfs4_proc_mknod, | |
5777 | .statfs = nfs4_proc_statfs, | |
5778 | .fsinfo = nfs4_proc_fsinfo, | |
5779 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 5780 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
5781 | .decode_dirent = nfs4_decode_dirent, |
5782 | .read_setup = nfs4_proc_read_setup, | |
ec06c096 | 5783 | .read_done = nfs4_read_done, |
1da177e4 | 5784 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 5785 | .write_done = nfs4_write_done, |
1da177e4 | 5786 | .commit_setup = nfs4_proc_commit_setup, |
788e7a89 | 5787 | .commit_done = nfs4_commit_done, |
1da177e4 | 5788 | .lock = nfs4_proc_lock, |
e50a1c2e | 5789 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 5790 | .close_context = nfs4_close_context, |
2b484297 | 5791 | .open_context = nfs4_atomic_open, |
45a52a02 | 5792 | .init_client = nfs4_init_client, |
5a5ea0d4 | 5793 | .secinfo = nfs4_proc_secinfo, |
1da177e4 LT |
5794 | }; |
5795 | ||
64c2ce8b AK |
5796 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
5797 | .prefix = XATTR_NAME_NFSV4_ACL, | |
5798 | .list = nfs4_xattr_list_nfs4_acl, | |
5799 | .get = nfs4_xattr_get_nfs4_acl, | |
5800 | .set = nfs4_xattr_set_nfs4_acl, | |
5801 | }; | |
5802 | ||
5803 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
5804 | &nfs4_xattr_nfs4_acl_handler, | |
5805 | NULL | |
5806 | }; | |
5807 | ||
1da177e4 LT |
5808 | /* |
5809 | * Local variables: | |
5810 | * c-basic-offset: 8 | |
5811 | * End: | |
5812 | */ |