Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/nfs/nfs4proc.c | |
3 | * | |
4 | * Client-side procedure declarations for NFSv4. | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
36 | */ | |
37 | ||
38 | #include <linux/mm.h> | |
1da177e4 LT |
39 | #include <linux/delay.h> |
40 | #include <linux/errno.h> | |
41 | #include <linux/string.h> | |
5a0e3ad6 | 42 | #include <linux/slab.h> |
1da177e4 | 43 | #include <linux/sunrpc/clnt.h> |
8f70e95f | 44 | #include <linux/sunrpc/gss_api.h> |
1da177e4 LT |
45 | #include <linux/nfs.h> |
46 | #include <linux/nfs4.h> | |
47 | #include <linux/nfs_fs.h> | |
48 | #include <linux/nfs_page.h> | |
9b7160c5 | 49 | #include <linux/nfs_mount.h> |
1da177e4 | 50 | #include <linux/namei.h> |
02a913a7 | 51 | #include <linux/mount.h> |
99fe60d0 | 52 | #include <linux/module.h> |
5a0ffe54 | 53 | #include <linux/sunrpc/bc_xprt.h> |
64c2ce8b | 54 | #include <linux/xattr.h> |
c7a360b0 | 55 | #include <linux/utsname.h> |
1da177e4 | 56 | |
4ce79717 | 57 | #include "nfs4_fs.h" |
1da177e4 | 58 | #include "delegation.h" |
101070ca | 59 | #include "internal.h" |
006ea73e | 60 | #include "iostat.h" |
fc931582 | 61 | #include "callback.h" |
b1f69b75 | 62 | #include "pnfs.h" |
1da177e4 LT |
63 | |
64 | #define NFSDBG_FACILITY NFSDBG_PROC | |
65 | ||
2066fe89 | 66 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
67 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
68 | ||
a78cb57a TM |
69 | #define NFS4_MAX_LOOP_ON_RECOVER (10) |
70 | ||
cdd4e68b | 71 | struct nfs4_opendata; |
864472e9 | 72 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
b257957e | 73 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data); |
1da177e4 | 74 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
9e33bed5 | 75 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *); |
7c513058 BS |
76 | static int _nfs4_proc_lookup(struct rpc_clnt *client, struct inode *dir, |
77 | const struct qstr *name, struct nfs_fh *fhandle, | |
78 | struct nfs_fattr *fattr); | |
9936781d | 79 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr); |
0ab64e0e TM |
80 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
81 | struct nfs_fattr *fattr, struct iattr *sattr, | |
82 | struct nfs4_state *state); | |
f062eb6c BS |
83 | #ifdef CONFIG_NFS_V4_1 |
84 | static int nfs41_test_stateid(struct nfs_server *, struct nfs4_state *); | |
85 | static int nfs41_free_stateid(struct nfs_server *, struct nfs4_state *); | |
86 | #endif | |
1da177e4 | 87 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 88 | static int nfs4_map_errors(int err) |
1da177e4 | 89 | { |
52567b03 TM |
90 | if (err >= -1000) |
91 | return err; | |
92 | switch (err) { | |
93 | case -NFS4ERR_RESOURCE: | |
94 | return -EREMOTEIO; | |
7ebb9315 BS |
95 | case -NFS4ERR_WRONGSEC: |
96 | return -EPERM; | |
3ddeb7c5 TM |
97 | case -NFS4ERR_BADOWNER: |
98 | case -NFS4ERR_BADNAME: | |
99 | return -EINVAL; | |
52567b03 | 100 | default: |
1da177e4 | 101 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 102 | __func__, -err); |
52567b03 | 103 | break; |
1da177e4 | 104 | } |
52567b03 | 105 | return -EIO; |
1da177e4 LT |
106 | } |
107 | ||
108 | /* | |
109 | * This is our standard bitmap for GETATTR requests. | |
110 | */ | |
111 | const u32 nfs4_fattr_bitmap[2] = { | |
112 | FATTR4_WORD0_TYPE | |
113 | | FATTR4_WORD0_CHANGE | |
114 | | FATTR4_WORD0_SIZE | |
115 | | FATTR4_WORD0_FSID | |
116 | | FATTR4_WORD0_FILEID, | |
117 | FATTR4_WORD1_MODE | |
118 | | FATTR4_WORD1_NUMLINKS | |
119 | | FATTR4_WORD1_OWNER | |
120 | | FATTR4_WORD1_OWNER_GROUP | |
121 | | FATTR4_WORD1_RAWDEV | |
122 | | FATTR4_WORD1_SPACE_USED | |
123 | | FATTR4_WORD1_TIME_ACCESS | |
124 | | FATTR4_WORD1_TIME_METADATA | |
125 | | FATTR4_WORD1_TIME_MODIFY | |
126 | }; | |
127 | ||
128 | const u32 nfs4_statfs_bitmap[2] = { | |
129 | FATTR4_WORD0_FILES_AVAIL | |
130 | | FATTR4_WORD0_FILES_FREE | |
131 | | FATTR4_WORD0_FILES_TOTAL, | |
132 | FATTR4_WORD1_SPACE_AVAIL | |
133 | | FATTR4_WORD1_SPACE_FREE | |
134 | | FATTR4_WORD1_SPACE_TOTAL | |
135 | }; | |
136 | ||
4ce79717 | 137 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
138 | FATTR4_WORD0_MAXLINK |
139 | | FATTR4_WORD0_MAXNAME, | |
140 | 0 | |
141 | }; | |
142 | ||
143 | const u32 nfs4_fsinfo_bitmap[2] = { FATTR4_WORD0_MAXFILESIZE | |
144 | | FATTR4_WORD0_MAXREAD | |
145 | | FATTR4_WORD0_MAXWRITE | |
146 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 147 | FATTR4_WORD1_TIME_DELTA |
504913fb | 148 | | FATTR4_WORD1_FS_LAYOUT_TYPES |
1da177e4 LT |
149 | }; |
150 | ||
830b8e33 MN |
151 | const u32 nfs4_fs_locations_bitmap[2] = { |
152 | FATTR4_WORD0_TYPE | |
153 | | FATTR4_WORD0_CHANGE | |
154 | | FATTR4_WORD0_SIZE | |
155 | | FATTR4_WORD0_FSID | |
156 | | FATTR4_WORD0_FILEID | |
157 | | FATTR4_WORD0_FS_LOCATIONS, | |
158 | FATTR4_WORD1_MODE | |
159 | | FATTR4_WORD1_NUMLINKS | |
160 | | FATTR4_WORD1_OWNER | |
161 | | FATTR4_WORD1_OWNER_GROUP | |
162 | | FATTR4_WORD1_RAWDEV | |
163 | | FATTR4_WORD1_SPACE_USED | |
164 | | FATTR4_WORD1_TIME_ACCESS | |
165 | | FATTR4_WORD1_TIME_METADATA | |
166 | | FATTR4_WORD1_TIME_MODIFY | |
167 | | FATTR4_WORD1_MOUNTED_ON_FILEID | |
168 | }; | |
169 | ||
bc4785cd | 170 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
171 | struct nfs4_readdir_arg *readdir) |
172 | { | |
0dbb4c67 | 173 | __be32 *start, *p; |
1da177e4 LT |
174 | |
175 | BUG_ON(readdir->count < 80); | |
176 | if (cookie > 2) { | |
b7ef1956 | 177 | readdir->cookie = cookie; |
1da177e4 LT |
178 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
179 | return; | |
180 | } | |
181 | ||
182 | readdir->cookie = 0; | |
183 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
184 | if (cookie == 2) | |
185 | return; | |
186 | ||
187 | /* | |
188 | * NFSv4 servers do not return entries for '.' and '..' | |
189 | * Therefore, we fake these entries here. We let '.' | |
190 | * have cookie 0 and '..' have cookie 1. Note that | |
191 | * when talking to the server, we always send cookie 0 | |
192 | * instead of 1 or 2. | |
193 | */ | |
0dbb4c67 | 194 | start = p = kmap_atomic(*readdir->pages, KM_USER0); |
1da177e4 LT |
195 | |
196 | if (cookie == 0) { | |
197 | *p++ = xdr_one; /* next */ | |
198 | *p++ = xdr_zero; /* cookie, first word */ | |
199 | *p++ = xdr_one; /* cookie, second word */ | |
200 | *p++ = xdr_one; /* entry len */ | |
201 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
202 | p++; | |
203 | *p++ = xdr_one; /* bitmap length */ | |
204 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
205 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 206 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
207 | } |
208 | ||
209 | *p++ = xdr_one; /* next */ | |
210 | *p++ = xdr_zero; /* cookie, first word */ | |
211 | *p++ = xdr_two; /* cookie, second word */ | |
212 | *p++ = xdr_two; /* entry len */ | |
213 | memcpy(p, "..\0\0", 4); /* entry */ | |
214 | p++; | |
215 | *p++ = xdr_one; /* bitmap length */ | |
216 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
217 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 218 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
219 | |
220 | readdir->pgbase = (char *)p - (char *)start; | |
221 | readdir->count -= readdir->pgbase; | |
222 | kunmap_atomic(start, KM_USER0); | |
223 | } | |
224 | ||
65de872e TM |
225 | static int nfs4_wait_clnt_recover(struct nfs_client *clp) |
226 | { | |
227 | int res; | |
228 | ||
229 | might_sleep(); | |
230 | ||
e005e804 | 231 | res = wait_on_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING, |
72cb77f4 | 232 | nfs_wait_bit_killable, TASK_KILLABLE); |
65de872e TM |
233 | return res; |
234 | } | |
235 | ||
236 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) | |
237 | { | |
238 | int res = 0; | |
239 | ||
240 | might_sleep(); | |
241 | ||
242 | if (*timeout <= 0) | |
243 | *timeout = NFS4_POLL_RETRY_MIN; | |
244 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
245 | *timeout = NFS4_POLL_RETRY_MAX; | |
246 | schedule_timeout_killable(*timeout); | |
247 | if (fatal_signal_pending(current)) | |
248 | res = -ERESTARTSYS; | |
249 | *timeout <<= 1; | |
250 | return res; | |
251 | } | |
252 | ||
253 | /* This is the error handling routine for processes that are allowed | |
254 | * to sleep. | |
255 | */ | |
b064eca2 | 256 | static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
65de872e TM |
257 | { |
258 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 259 | struct nfs4_state *state = exception->state; |
65de872e TM |
260 | int ret = errorcode; |
261 | ||
262 | exception->retry = 0; | |
263 | switch(errorcode) { | |
264 | case 0: | |
265 | return 0; | |
9e33bed5 TM |
266 | case -NFS4ERR_ADMIN_REVOKED: |
267 | case -NFS4ERR_BAD_STATEID: | |
268 | case -NFS4ERR_OPENMODE: | |
269 | if (state == NULL) | |
270 | break; | |
0400a6b0 TM |
271 | nfs4_schedule_stateid_recovery(server, state); |
272 | goto wait_on_recovery; | |
0ced63d1 TM |
273 | case -NFS4ERR_EXPIRED: |
274 | if (state != NULL) | |
275 | nfs4_schedule_stateid_recovery(server, state); | |
65de872e | 276 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 277 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
278 | nfs4_schedule_lease_recovery(clp); |
279 | goto wait_on_recovery; | |
03391693 | 280 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
281 | case -NFS4ERR_BADSESSION: |
282 | case -NFS4ERR_BADSLOT: | |
283 | case -NFS4ERR_BAD_HIGH_SLOT: | |
284 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
285 | case -NFS4ERR_DEADSESSION: | |
286 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
287 | case -NFS4ERR_SEQ_MISORDERED: | |
288 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
289 | errorcode); | |
0400a6b0 | 290 | nfs4_schedule_session_recovery(clp->cl_session); |
4745e315 | 291 | exception->retry = 1; |
b9179237 | 292 | break; |
03391693 | 293 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 294 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
295 | if (exception->timeout > HZ) { |
296 | /* We have retried a decent amount, time to | |
297 | * fail | |
298 | */ | |
299 | ret = -EBUSY; | |
300 | break; | |
301 | } | |
65de872e TM |
302 | case -NFS4ERR_GRACE: |
303 | case -NFS4ERR_DELAY: | |
2c643488 | 304 | case -EKEYEXPIRED: |
65de872e TM |
305 | ret = nfs4_delay(server->client, &exception->timeout); |
306 | if (ret != 0) | |
307 | break; | |
a8a4ae3a | 308 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
309 | case -NFS4ERR_OLD_STATEID: |
310 | exception->retry = 1; | |
b064eca2 TM |
311 | break; |
312 | case -NFS4ERR_BADOWNER: | |
313 | /* The following works around a Linux server bug! */ | |
314 | case -NFS4ERR_BADNAME: | |
315 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
316 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
317 | exception->retry = 1; | |
318 | printk(KERN_WARNING "NFS: v4 server %s " | |
319 | "does not accept raw " | |
320 | "uid/gids. " | |
321 | "Reenabling the idmapper.\n", | |
322 | server->nfs_client->cl_hostname); | |
323 | } | |
65de872e TM |
324 | } |
325 | /* We failed to handle the error */ | |
326 | return nfs4_map_errors(ret); | |
0400a6b0 | 327 | wait_on_recovery: |
a2c0b9e2 TM |
328 | ret = nfs4_wait_clnt_recover(clp); |
329 | if (ret == 0) | |
330 | exception->retry = 1; | |
331 | return ret; | |
65de872e TM |
332 | } |
333 | ||
334 | ||
452e9352 | 335 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 336 | { |
1da177e4 LT |
337 | spin_lock(&clp->cl_lock); |
338 | if (time_before(clp->cl_last_renewal,timestamp)) | |
339 | clp->cl_last_renewal = timestamp; | |
340 | spin_unlock(&clp->cl_lock); | |
341 | } | |
342 | ||
452e9352 TM |
343 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
344 | { | |
345 | do_renew_lease(server->nfs_client, timestamp); | |
346 | } | |
347 | ||
cccef3b9 AA |
348 | #if defined(CONFIG_NFS_V4_1) |
349 | ||
e2c4ab3c AA |
350 | /* |
351 | * nfs4_free_slot - free a slot and efficiently update slot table. | |
352 | * | |
353 | * freeing a slot is trivially done by clearing its respective bit | |
354 | * in the bitmap. | |
355 | * If the freed slotid equals highest_used_slotid we want to update it | |
356 | * so that the server would be able to size down the slot table if needed, | |
357 | * otherwise we know that the highest_used_slotid is still in use. | |
358 | * When updating highest_used_slotid there may be "holes" in the bitmap | |
359 | * so we need to scan down from highest_used_slotid to 0 looking for the now | |
360 | * highest slotid in use. | |
361 | * If none found, highest_used_slotid is set to -1. | |
35dc1d74 TM |
362 | * |
363 | * Must be called while holding tbl->slot_tbl_lock | |
e2c4ab3c AA |
364 | */ |
365 | static void | |
dfb4f309 | 366 | nfs4_free_slot(struct nfs4_slot_table *tbl, struct nfs4_slot *free_slot) |
e2c4ab3c | 367 | { |
dfb4f309 | 368 | int free_slotid = free_slot - tbl->slots; |
e2c4ab3c AA |
369 | int slotid = free_slotid; |
370 | ||
dfb4f309 | 371 | BUG_ON(slotid < 0 || slotid >= NFS4_MAX_SLOT_TABLE); |
e2c4ab3c AA |
372 | /* clear used bit in bitmap */ |
373 | __clear_bit(slotid, tbl->used_slots); | |
374 | ||
375 | /* update highest_used_slotid when it is freed */ | |
376 | if (slotid == tbl->highest_used_slotid) { | |
377 | slotid = find_last_bit(tbl->used_slots, tbl->max_slots); | |
bcb56164 | 378 | if (slotid < tbl->max_slots) |
e2c4ab3c AA |
379 | tbl->highest_used_slotid = slotid; |
380 | else | |
381 | tbl->highest_used_slotid = -1; | |
382 | } | |
e2c4ab3c AA |
383 | dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__, |
384 | free_slotid, tbl->highest_used_slotid); | |
385 | } | |
386 | ||
3bfb0fc5 | 387 | /* |
42acd021 | 388 | * Signal state manager thread if session fore channel is drained |
3bfb0fc5 | 389 | */ |
42acd021 | 390 | static void nfs4_check_drain_fc_complete(struct nfs4_session *ses) |
3bfb0fc5 | 391 | { |
689cf5c1 AB |
392 | struct rpc_task *task; |
393 | ||
a2118c33 | 394 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state)) { |
689cf5c1 AB |
395 | task = rpc_wake_up_next(&ses->fc_slot_table.slot_tbl_waitq); |
396 | if (task) | |
397 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
3bfb0fc5 AB |
398 | return; |
399 | } | |
400 | ||
401 | if (ses->fc_slot_table.highest_used_slotid != -1) | |
402 | return; | |
403 | ||
42acd021 AA |
404 | dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__); |
405 | complete(&ses->fc_slot_table.complete); | |
406 | } | |
407 | ||
408 | /* | |
409 | * Signal state manager thread if session back channel is drained | |
410 | */ | |
411 | void nfs4_check_drain_bc_complete(struct nfs4_session *ses) | |
412 | { | |
413 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state) || | |
414 | ses->bc_slot_table.highest_used_slotid != -1) | |
415 | return; | |
416 | dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__); | |
417 | complete(&ses->bc_slot_table.complete); | |
3bfb0fc5 AB |
418 | } |
419 | ||
d185a334 | 420 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 AA |
421 | { |
422 | struct nfs4_slot_table *tbl; | |
423 | ||
d185a334 | 424 | tbl = &res->sr_session->fc_slot_table; |
dfb4f309 | 425 | if (!res->sr_slot) { |
13615871 AA |
426 | /* just wake up the next guy waiting since |
427 | * we may have not consumed a slot after all */ | |
691daf3b | 428 | dprintk("%s: No slot\n", __func__); |
35dc1d74 | 429 | return; |
13615871 | 430 | } |
ea028ac9 | 431 | |
35dc1d74 | 432 | spin_lock(&tbl->slot_tbl_lock); |
dfb4f309 | 433 | nfs4_free_slot(tbl, res->sr_slot); |
42acd021 | 434 | nfs4_check_drain_fc_complete(res->sr_session); |
35dc1d74 | 435 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 436 | res->sr_slot = NULL; |
13615871 AA |
437 | } |
438 | ||
14516c3a | 439 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c AA |
440 | { |
441 | unsigned long timestamp; | |
14516c3a | 442 | struct nfs_client *clp; |
b0df806c AA |
443 | |
444 | /* | |
445 | * sr_status remains 1 if an RPC level error occurred. The server | |
446 | * may or may not have processed the sequence operation.. | |
447 | * Proceed as if the server received and processed the sequence | |
448 | * operation. | |
449 | */ | |
450 | if (res->sr_status == 1) | |
451 | res->sr_status = NFS_OK; | |
452 | ||
468f8613 BS |
453 | /* don't increment the sequence number if the task wasn't sent */ |
454 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
455 | goto out; |
456 | ||
691daf3b | 457 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
458 | switch (res->sr_status) { |
459 | case 0: | |
b0df806c | 460 | /* Update the slot's sequence and clientid lease timer */ |
dfb4f309 | 461 | ++res->sr_slot->seq_nr; |
b0df806c | 462 | timestamp = res->sr_renewal_time; |
14516c3a | 463 | clp = res->sr_session->clp; |
452e9352 | 464 | do_renew_lease(clp, timestamp); |
0629e370 | 465 | /* Check sequence flags */ |
b4410c2f TM |
466 | if (res->sr_status_flags != 0) |
467 | nfs4_schedule_lease_recovery(clp); | |
14516c3a TM |
468 | break; |
469 | case -NFS4ERR_DELAY: | |
470 | /* The server detected a resend of the RPC call and | |
471 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
472 | * of RFC5661. | |
473 | */ | |
12364a4f | 474 | dprintk("%s: slot=%td seq=%d: Operation in progress\n", |
dfb4f309 BH |
475 | __func__, |
476 | res->sr_slot - res->sr_session->fc_slot_table.slots, | |
477 | res->sr_slot->seq_nr); | |
14516c3a TM |
478 | goto out_retry; |
479 | default: | |
480 | /* Just update the slot sequence no. */ | |
dfb4f309 | 481 | ++res->sr_slot->seq_nr; |
b0df806c AA |
482 | } |
483 | out: | |
484 | /* The session may be reset by one of the error handlers. */ | |
485 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 486 | nfs41_sequence_free_slot(res); |
14516c3a TM |
487 | return 1; |
488 | out_retry: | |
d05dd4e9 | 489 | if (!rpc_restart_call(task)) |
14516c3a TM |
490 | goto out; |
491 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
492 | return 0; | |
b0df806c AA |
493 | } |
494 | ||
14516c3a TM |
495 | static int nfs4_sequence_done(struct rpc_task *task, |
496 | struct nfs4_sequence_res *res) | |
df896455 | 497 | { |
14516c3a TM |
498 | if (res->sr_session == NULL) |
499 | return 1; | |
500 | return nfs41_sequence_done(task, res); | |
df896455 TM |
501 | } |
502 | ||
510b8175 BH |
503 | /* |
504 | * nfs4_find_slot - efficiently look for a free slot | |
505 | * | |
506 | * nfs4_find_slot looks for an unset bit in the used_slots bitmap. | |
507 | * If found, we mark the slot as used, update the highest_used_slotid, | |
508 | * and respectively set up the sequence operation args. | |
509 | * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise. | |
fbcd4abc AA |
510 | * |
511 | * Note: must be called with under the slot_tbl_lock. | |
510b8175 BH |
512 | */ |
513 | static u8 | |
40ead580 | 514 | nfs4_find_slot(struct nfs4_slot_table *tbl) |
510b8175 BH |
515 | { |
516 | int slotid; | |
517 | u8 ret_id = NFS4_MAX_SLOT_TABLE; | |
518 | BUILD_BUG_ON((u8)NFS4_MAX_SLOT_TABLE != (int)NFS4_MAX_SLOT_TABLE); | |
519 | ||
510b8175 BH |
520 | dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n", |
521 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, | |
522 | tbl->max_slots); | |
523 | slotid = find_first_zero_bit(tbl->used_slots, tbl->max_slots); | |
524 | if (slotid >= tbl->max_slots) | |
525 | goto out; | |
526 | __set_bit(slotid, tbl->used_slots); | |
527 | if (slotid > tbl->highest_used_slotid) | |
528 | tbl->highest_used_slotid = slotid; | |
529 | ret_id = slotid; | |
530 | out: | |
531 | dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n", | |
532 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, ret_id); | |
510b8175 BH |
533 | return ret_id; |
534 | } | |
535 | ||
dc70d7b3 | 536 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
537 | struct nfs4_sequence_args *args, |
538 | struct nfs4_sequence_res *res, | |
539 | int cache_reply, | |
540 | struct rpc_task *task) | |
541 | { | |
fbcd4abc AA |
542 | struct nfs4_slot *slot; |
543 | struct nfs4_slot_table *tbl; | |
544 | u8 slotid; | |
545 | ||
546 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 547 | /* slot already allocated? */ |
dfb4f309 | 548 | if (res->sr_slot != NULL) |
ce5039c1 AA |
549 | return 0; |
550 | ||
fbcd4abc AA |
551 | tbl = &session->fc_slot_table; |
552 | ||
553 | spin_lock(&tbl->slot_tbl_lock); | |
a2118c33 | 554 | if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) && |
5601a00d | 555 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { |
ea028ac9 AA |
556 | /* |
557 | * The state manager will wait until the slot table is empty. | |
558 | * Schedule the reset thread | |
559 | */ | |
05f0d236 | 560 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
b069d94a | 561 | spin_unlock(&tbl->slot_tbl_lock); |
bcb56164 | 562 | dprintk("%s Schedule Session Reset\n", __func__); |
05f0d236 | 563 | return -EAGAIN; |
b069d94a AA |
564 | } |
565 | ||
689cf5c1 AB |
566 | if (!rpc_queue_empty(&tbl->slot_tbl_waitq) && |
567 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { | |
568 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
569 | spin_unlock(&tbl->slot_tbl_lock); | |
570 | dprintk("%s enforce FIFO order\n", __func__); | |
571 | return -EAGAIN; | |
572 | } | |
573 | ||
40ead580 | 574 | slotid = nfs4_find_slot(tbl); |
fbcd4abc AA |
575 | if (slotid == NFS4_MAX_SLOT_TABLE) { |
576 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
577 | spin_unlock(&tbl->slot_tbl_lock); | |
578 | dprintk("<-- %s: no free slots\n", __func__); | |
579 | return -EAGAIN; | |
580 | } | |
581 | spin_unlock(&tbl->slot_tbl_lock); | |
582 | ||
689cf5c1 | 583 | rpc_task_set_priority(task, RPC_PRIORITY_NORMAL); |
fbcd4abc | 584 | slot = tbl->slots + slotid; |
99fe60d0 | 585 | args->sa_session = session; |
fbcd4abc AA |
586 | args->sa_slotid = slotid; |
587 | args->sa_cache_this = cache_reply; | |
588 | ||
589 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, slotid, slot->seq_nr); | |
590 | ||
99fe60d0 | 591 | res->sr_session = session; |
dfb4f309 | 592 | res->sr_slot = slot; |
fbcd4abc | 593 | res->sr_renewal_time = jiffies; |
2a6e26cd | 594 | res->sr_status_flags = 0; |
fbcd4abc AA |
595 | /* |
596 | * sr_status is only set in decode_sequence, and so will remain | |
597 | * set to 1 if an rpc level failure occurs. | |
598 | */ | |
599 | res->sr_status = 1; | |
ce5039c1 AA |
600 | return 0; |
601 | } | |
dc70d7b3 | 602 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 603 | |
035168ab | 604 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
605 | struct nfs4_sequence_args *args, |
606 | struct nfs4_sequence_res *res, | |
607 | int cache_reply, | |
608 | struct rpc_task *task) | |
609 | { | |
035168ab | 610 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
611 | int ret = 0; |
612 | ||
035168ab TM |
613 | if (session == NULL) { |
614 | args->sa_session = NULL; | |
615 | res->sr_session = NULL; | |
616 | goto out; | |
617 | } | |
618 | ||
12364a4f | 619 | dprintk("--> %s clp %p session %p sr_slot %td\n", |
dfb4f309 BH |
620 | __func__, session->clp, session, res->sr_slot ? |
621 | res->sr_slot - session->fc_slot_table.slots : -1); | |
ce5039c1 | 622 | |
035168ab | 623 | ret = nfs41_setup_sequence(session, args, res, cache_reply, |
ce5039c1 | 624 | task); |
ce5039c1 AA |
625 | out: |
626 | dprintk("<-- %s status=%d\n", __func__, ret); | |
627 | return ret; | |
628 | } | |
629 | ||
630 | struct nfs41_call_sync_data { | |
035168ab | 631 | const struct nfs_server *seq_server; |
ce5039c1 AA |
632 | struct nfs4_sequence_args *seq_args; |
633 | struct nfs4_sequence_res *seq_res; | |
634 | int cache_reply; | |
635 | }; | |
636 | ||
637 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
638 | { | |
639 | struct nfs41_call_sync_data *data = calldata; | |
640 | ||
035168ab TM |
641 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
642 | ||
643 | if (nfs4_setup_sequence(data->seq_server, data->seq_args, | |
ce5039c1 AA |
644 | data->seq_res, data->cache_reply, task)) |
645 | return; | |
646 | rpc_call_start(task); | |
647 | } | |
648 | ||
b257957e AB |
649 | static void nfs41_call_priv_sync_prepare(struct rpc_task *task, void *calldata) |
650 | { | |
651 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
652 | nfs41_call_sync_prepare(task, calldata); | |
653 | } | |
654 | ||
69ab40c4 AA |
655 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
656 | { | |
657 | struct nfs41_call_sync_data *data = calldata; | |
658 | ||
14516c3a | 659 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
660 | } |
661 | ||
ce5039c1 AA |
662 | struct rpc_call_ops nfs41_call_sync_ops = { |
663 | .rpc_call_prepare = nfs41_call_sync_prepare, | |
69ab40c4 | 664 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
665 | }; |
666 | ||
b257957e AB |
667 | struct rpc_call_ops nfs41_call_priv_sync_ops = { |
668 | .rpc_call_prepare = nfs41_call_priv_sync_prepare, | |
669 | .rpc_call_done = nfs41_call_sync_done, | |
670 | }; | |
671 | ||
7c513058 BS |
672 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
673 | struct nfs_server *server, | |
ce5039c1 AA |
674 | struct rpc_message *msg, |
675 | struct nfs4_sequence_args *args, | |
676 | struct nfs4_sequence_res *res, | |
b257957e AB |
677 | int cache_reply, |
678 | int privileged) | |
ce5039c1 AA |
679 | { |
680 | int ret; | |
681 | struct rpc_task *task; | |
682 | struct nfs41_call_sync_data data = { | |
035168ab | 683 | .seq_server = server, |
ce5039c1 AA |
684 | .seq_args = args, |
685 | .seq_res = res, | |
686 | .cache_reply = cache_reply, | |
687 | }; | |
688 | struct rpc_task_setup task_setup = { | |
7c513058 | 689 | .rpc_client = clnt, |
ce5039c1 AA |
690 | .rpc_message = msg, |
691 | .callback_ops = &nfs41_call_sync_ops, | |
692 | .callback_data = &data | |
693 | }; | |
694 | ||
dfb4f309 | 695 | res->sr_slot = NULL; |
b257957e AB |
696 | if (privileged) |
697 | task_setup.callback_ops = &nfs41_call_priv_sync_ops; | |
ce5039c1 AA |
698 | task = rpc_run_task(&task_setup); |
699 | if (IS_ERR(task)) | |
700 | ret = PTR_ERR(task); | |
701 | else { | |
702 | ret = task->tk_status; | |
703 | rpc_put_task(task); | |
704 | } | |
705 | return ret; | |
706 | } | |
707 | ||
7c513058 BS |
708 | int _nfs4_call_sync_session(struct rpc_clnt *clnt, |
709 | struct nfs_server *server, | |
cccef3b9 AA |
710 | struct rpc_message *msg, |
711 | struct nfs4_sequence_args *args, | |
712 | struct nfs4_sequence_res *res, | |
713 | int cache_reply) | |
714 | { | |
7c513058 | 715 | return nfs4_call_sync_sequence(clnt, server, msg, args, res, cache_reply, 0); |
cccef3b9 AA |
716 | } |
717 | ||
df896455 | 718 | #else |
14516c3a TM |
719 | static int nfs4_sequence_done(struct rpc_task *task, |
720 | struct nfs4_sequence_res *res) | |
df896455 | 721 | { |
14516c3a | 722 | return 1; |
df896455 | 723 | } |
cccef3b9 AA |
724 | #endif /* CONFIG_NFS_V4_1 */ |
725 | ||
7c513058 BS |
726 | int _nfs4_call_sync(struct rpc_clnt *clnt, |
727 | struct nfs_server *server, | |
cccef3b9 AA |
728 | struct rpc_message *msg, |
729 | struct nfs4_sequence_args *args, | |
730 | struct nfs4_sequence_res *res, | |
731 | int cache_reply) | |
732 | { | |
f3752975 | 733 | args->sa_session = res->sr_session = NULL; |
7c513058 | 734 | return rpc_call_sync(clnt, msg, 0); |
cccef3b9 AA |
735 | } |
736 | ||
e73b83f2 | 737 | static inline |
7c513058 BS |
738 | int nfs4_call_sync(struct rpc_clnt *clnt, |
739 | struct nfs_server *server, | |
e73b83f2 BS |
740 | struct rpc_message *msg, |
741 | struct nfs4_sequence_args *args, | |
742 | struct nfs4_sequence_res *res, | |
743 | int cache_reply) | |
744 | { | |
7c513058 BS |
745 | return server->nfs_client->cl_mvops->call_sync(clnt, server, msg, |
746 | args, res, cache_reply); | |
e73b83f2 | 747 | } |
cccef3b9 | 748 | |
38478b24 | 749 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 750 | { |
38478b24 | 751 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 752 | |
38478b24 | 753 | spin_lock(&dir->i_lock); |
40d24704 TM |
754 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; |
755 | if (!cinfo->atomic || cinfo->before != nfsi->change_attr) | |
bfc69a45 | 756 | nfs_force_lookup_revalidate(dir); |
40d24704 | 757 | nfsi->change_attr = cinfo->after; |
38478b24 | 758 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
759 | } |
760 | ||
e56e0b78 | 761 | struct nfs4_opendata { |
c6d00e63 | 762 | struct kref kref; |
e56e0b78 TM |
763 | struct nfs_openargs o_arg; |
764 | struct nfs_openres o_res; | |
cdd4e68b TM |
765 | struct nfs_open_confirmargs c_arg; |
766 | struct nfs_open_confirmres c_res; | |
e56e0b78 TM |
767 | struct nfs_fattr f_attr; |
768 | struct nfs_fattr dir_attr; | |
e56e0b78 | 769 | struct dentry *dir; |
82a2c1b7 | 770 | struct dentry *dentry; |
e56e0b78 | 771 | struct nfs4_state_owner *owner; |
aac00a8d | 772 | struct nfs4_state *state; |
e56e0b78 | 773 | struct iattr attrs; |
26e976a8 | 774 | unsigned long timestamp; |
3e309914 | 775 | unsigned int rpc_done : 1; |
24ac23ab TM |
776 | int rpc_status; |
777 | int cancelled; | |
e56e0b78 TM |
778 | }; |
779 | ||
2ced46c2 TM |
780 | |
781 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
782 | { | |
783 | p->o_res.f_attr = &p->f_attr; | |
784 | p->o_res.dir_attr = &p->dir_attr; | |
c1d51931 TM |
785 | p->o_res.seqid = p->o_arg.seqid; |
786 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 TM |
787 | p->o_res.server = p->o_arg.server; |
788 | nfs_fattr_init(&p->f_attr); | |
789 | nfs_fattr_init(&p->dir_attr); | |
790 | } | |
791 | ||
82a2c1b7 | 792 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 793 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be TM |
794 | const struct iattr *attrs, |
795 | gfp_t gfp_mask) | |
e56e0b78 | 796 | { |
82a2c1b7 | 797 | struct dentry *parent = dget_parent(dentry); |
e56e0b78 TM |
798 | struct inode *dir = parent->d_inode; |
799 | struct nfs_server *server = NFS_SERVER(dir); | |
800 | struct nfs4_opendata *p; | |
801 | ||
8535b2be | 802 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
803 | if (p == NULL) |
804 | goto err; | |
8535b2be | 805 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 TM |
806 | if (p->o_arg.seqid == NULL) |
807 | goto err_free; | |
82a2c1b7 AV |
808 | nfs_sb_active(dentry->d_sb); |
809 | p->dentry = dget(dentry); | |
e56e0b78 TM |
810 | p->dir = parent; |
811 | p->owner = sp; | |
812 | atomic_inc(&sp->so_count); | |
813 | p->o_arg.fh = NFS_FH(dir); | |
dc0b027d TM |
814 | p->o_arg.open_flags = flags; |
815 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
7539bbab | 816 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 817 | p->o_arg.id = sp->so_owner_id.id; |
82a2c1b7 | 818 | p->o_arg.name = &dentry->d_name; |
e56e0b78 TM |
819 | p->o_arg.server = server; |
820 | p->o_arg.bitmask = server->attr_bitmask; | |
821 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; | |
d77d76ff TM |
822 | if (flags & O_CREAT) { |
823 | u32 *s; | |
824 | ||
e56e0b78 TM |
825 | p->o_arg.u.attrs = &p->attrs; |
826 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
d77d76ff TM |
827 | s = (u32 *) p->o_arg.u.verifier.data; |
828 | s[0] = jiffies; | |
829 | s[1] = current->pid; | |
e56e0b78 | 830 | } |
cdd4e68b TM |
831 | p->c_arg.fh = &p->o_res.fh; |
832 | p->c_arg.stateid = &p->o_res.stateid; | |
833 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 834 | nfs4_init_opendata_res(p); |
c6d00e63 | 835 | kref_init(&p->kref); |
e56e0b78 TM |
836 | return p; |
837 | err_free: | |
838 | kfree(p); | |
839 | err: | |
840 | dput(parent); | |
841 | return NULL; | |
842 | } | |
843 | ||
c6d00e63 | 844 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 845 | { |
c6d00e63 TM |
846 | struct nfs4_opendata *p = container_of(kref, |
847 | struct nfs4_opendata, kref); | |
82a2c1b7 | 848 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
849 | |
850 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
851 | if (p->state != NULL) |
852 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
853 | nfs4_put_state_owner(p->owner); |
854 | dput(p->dir); | |
82a2c1b7 AV |
855 | dput(p->dentry); |
856 | nfs_sb_deactive(sb); | |
c6d00e63 TM |
857 | kfree(p); |
858 | } | |
859 | ||
860 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
861 | { | |
862 | if (p != NULL) | |
863 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
864 | } |
865 | ||
06f814a3 TM |
866 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
867 | { | |
06f814a3 TM |
868 | int ret; |
869 | ||
06f814a3 | 870 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
871 | return ret; |
872 | } | |
873 | ||
dc0b027d | 874 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
875 | { |
876 | int ret = 0; | |
dc0b027d TM |
877 | |
878 | if (open_mode & O_EXCL) | |
879 | goto out; | |
880 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 881 | case FMODE_READ: |
88069f77 TM |
882 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
883 | && state->n_rdonly != 0; | |
6ee41268 TM |
884 | break; |
885 | case FMODE_WRITE: | |
88069f77 TM |
886 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
887 | && state->n_wronly != 0; | |
6ee41268 TM |
888 | break; |
889 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
890 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
891 | && state->n_rdwr != 0; | |
6ee41268 | 892 | } |
dc0b027d | 893 | out: |
6ee41268 TM |
894 | return ret; |
895 | } | |
896 | ||
dc0b027d | 897 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 898 | { |
dc0b027d | 899 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 900 | return 0; |
15c831bf | 901 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 902 | return 0; |
b7391f44 | 903 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
904 | return 1; |
905 | } | |
906 | ||
dc0b027d | 907 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 908 | { |
dc0b027d | 909 | switch (fmode) { |
e7616923 TM |
910 | case FMODE_WRITE: |
911 | state->n_wronly++; | |
912 | break; | |
913 | case FMODE_READ: | |
914 | state->n_rdonly++; | |
915 | break; | |
916 | case FMODE_READ|FMODE_WRITE: | |
917 | state->n_rdwr++; | |
918 | } | |
dc0b027d | 919 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
920 | } |
921 | ||
dc0b027d | 922 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
923 | { |
924 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
925 | memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data)); | |
926 | memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data)); | |
dc0b027d | 927 | switch (fmode) { |
003707c7 TM |
928 | case FMODE_READ: |
929 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
930 | break; | |
931 | case FMODE_WRITE: | |
932 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
933 | break; | |
934 | case FMODE_READ|FMODE_WRITE: | |
935 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
936 | } | |
e7616923 TM |
937 | } |
938 | ||
dc0b027d | 939 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 940 | { |
8bda4e4c | 941 | write_seqlock(&state->seqlock); |
dc0b027d | 942 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 943 | write_sequnlock(&state->seqlock); |
003707c7 TM |
944 | } |
945 | ||
dc0b027d | 946 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 947 | { |
8bda4e4c TM |
948 | /* |
949 | * Protect the call to nfs4_state_set_mode_locked and | |
950 | * serialise the stateid update | |
951 | */ | |
952 | write_seqlock(&state->seqlock); | |
003707c7 TM |
953 | if (deleg_stateid != NULL) { |
954 | memcpy(state->stateid.data, deleg_stateid->data, sizeof(state->stateid.data)); | |
955 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
956 | } | |
957 | if (open_stateid != NULL) | |
dc0b027d | 958 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
959 | write_sequnlock(&state->seqlock); |
960 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 961 | update_open_stateflags(state, fmode); |
ec073428 | 962 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
963 | } |
964 | ||
dc0b027d | 965 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
966 | { |
967 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
968 | struct nfs_delegation *deleg_cur; | |
969 | int ret = 0; | |
970 | ||
dc0b027d | 971 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
972 | |
973 | rcu_read_lock(); | |
974 | deleg_cur = rcu_dereference(nfsi->delegation); | |
975 | if (deleg_cur == NULL) | |
976 | goto no_delegation; | |
977 | ||
978 | spin_lock(&deleg_cur->lock); | |
979 | if (nfsi->delegation != deleg_cur || | |
dc0b027d | 980 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
981 | goto no_delegation_unlock; |
982 | ||
983 | if (delegation == NULL) | |
984 | delegation = &deleg_cur->stateid; | |
985 | else if (memcmp(deleg_cur->stateid.data, delegation->data, NFS4_STATEID_SIZE) != 0) | |
986 | goto no_delegation_unlock; | |
987 | ||
b7391f44 | 988 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 989 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
990 | ret = 1; |
991 | no_delegation_unlock: | |
992 | spin_unlock(&deleg_cur->lock); | |
993 | no_delegation: | |
994 | rcu_read_unlock(); | |
995 | ||
996 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 997 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
998 | ret = 1; |
999 | } | |
1000 | ||
1001 | return ret; | |
1002 | } | |
1003 | ||
1004 | ||
dc0b027d | 1005 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1006 | { |
1007 | struct nfs_delegation *delegation; | |
1008 | ||
1009 | rcu_read_lock(); | |
1010 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1011 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1012 | rcu_read_unlock(); |
1013 | return; | |
1014 | } | |
1015 | rcu_read_unlock(); | |
1016 | nfs_inode_return_delegation(inode); | |
1017 | } | |
1018 | ||
6ee41268 | 1019 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1020 | { |
1021 | struct nfs4_state *state = opendata->state; | |
1022 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1023 | struct nfs_delegation *delegation; | |
dc0b027d TM |
1024 | int open_mode = opendata->o_arg.open_flags & O_EXCL; |
1025 | fmode_t fmode = opendata->o_arg.fmode; | |
aac00a8d TM |
1026 | nfs4_stateid stateid; |
1027 | int ret = -EAGAIN; | |
1028 | ||
aac00a8d | 1029 | for (;;) { |
dc0b027d | 1030 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 1031 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
1032 | if (can_open_cached(state, fmode, open_mode)) { |
1033 | update_open_stateflags(state, fmode); | |
6ee41268 | 1034 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
1035 | goto out_return_state; |
1036 | } | |
1037 | spin_unlock(&state->owner->so_lock); | |
1038 | } | |
34310430 TM |
1039 | rcu_read_lock(); |
1040 | delegation = rcu_dereference(nfsi->delegation); | |
1041 | if (delegation == NULL || | |
dc0b027d | 1042 | !can_open_delegated(delegation, fmode)) { |
34310430 | 1043 | rcu_read_unlock(); |
aac00a8d | 1044 | break; |
34310430 | 1045 | } |
aac00a8d TM |
1046 | /* Save the delegation */ |
1047 | memcpy(stateid.data, delegation->stateid.data, sizeof(stateid.data)); | |
1048 | rcu_read_unlock(); | |
af22f94a | 1049 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
1050 | if (ret != 0) |
1051 | goto out; | |
1052 | ret = -EAGAIN; | |
34310430 TM |
1053 | |
1054 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1055 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1056 | goto out_return_state; |
aac00a8d | 1057 | } |
aac00a8d TM |
1058 | out: |
1059 | return ERR_PTR(ret); | |
1060 | out_return_state: | |
1061 | atomic_inc(&state->count); | |
1062 | return state; | |
1063 | } | |
1064 | ||
24ac23ab TM |
1065 | static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) |
1066 | { | |
1067 | struct inode *inode; | |
1068 | struct nfs4_state *state = NULL; | |
003707c7 | 1069 | struct nfs_delegation *delegation; |
1b370bc2 | 1070 | int ret; |
24ac23ab | 1071 | |
aac00a8d | 1072 | if (!data->rpc_done) { |
6ee41268 | 1073 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1074 | goto out; |
1075 | } | |
1076 | ||
1b370bc2 | 1077 | ret = -EAGAIN; |
24ac23ab | 1078 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1079 | goto err; |
24ac23ab | 1080 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 1081 | ret = PTR_ERR(inode); |
03f28e3a | 1082 | if (IS_ERR(inode)) |
1b370bc2 TM |
1083 | goto err; |
1084 | ret = -ENOMEM; | |
24ac23ab TM |
1085 | state = nfs4_get_open_state(inode, data->owner); |
1086 | if (state == NULL) | |
1b370bc2 | 1087 | goto err_put_inode; |
549d6ed5 | 1088 | if (data->o_res.delegation_type != 0) { |
549d6ed5 TM |
1089 | int delegation_flags = 0; |
1090 | ||
003707c7 TM |
1091 | rcu_read_lock(); |
1092 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
1093 | if (delegation) | |
1094 | delegation_flags = delegation->flags; | |
1095 | rcu_read_unlock(); | |
15c831bf | 1096 | if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) |
549d6ed5 TM |
1097 | nfs_inode_set_delegation(state->inode, |
1098 | data->owner->so_cred, | |
1099 | &data->o_res); | |
1100 | else | |
1101 | nfs_inode_reclaim_delegation(state->inode, | |
1102 | data->owner->so_cred, | |
1103 | &data->o_res); | |
1104 | } | |
34310430 TM |
1105 | |
1106 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
dc0b027d | 1107 | data->o_arg.fmode); |
24ac23ab | 1108 | iput(inode); |
aac00a8d | 1109 | out: |
24ac23ab | 1110 | return state; |
1b370bc2 TM |
1111 | err_put_inode: |
1112 | iput(inode); | |
1113 | err: | |
1114 | return ERR_PTR(ret); | |
24ac23ab TM |
1115 | } |
1116 | ||
864472e9 TM |
1117 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1118 | { | |
1119 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1120 | struct nfs_open_context *ctx; | |
1121 | ||
1122 | spin_lock(&state->inode->i_lock); | |
1123 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1124 | if (ctx->state != state) | |
1125 | continue; | |
1126 | get_nfs_open_context(ctx); | |
1127 | spin_unlock(&state->inode->i_lock); | |
1128 | return ctx; | |
1129 | } | |
1130 | spin_unlock(&state->inode->i_lock); | |
1131 | return ERR_PTR(-ENOENT); | |
1132 | } | |
1133 | ||
6f220ed5 TM |
1134 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
1135 | { | |
1136 | struct nfs4_opendata *opendata; | |
1137 | ||
3d4ff43d | 1138 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, NULL, GFP_NOFS); |
6f220ed5 TM |
1139 | if (opendata == NULL) |
1140 | return ERR_PTR(-ENOMEM); | |
1141 | opendata->state = state; | |
1142 | atomic_inc(&state->count); | |
1143 | return opendata; | |
1144 | } | |
1145 | ||
dc0b027d | 1146 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1147 | { |
2ced46c2 | 1148 | struct nfs4_state *newstate; |
864472e9 TM |
1149 | int ret; |
1150 | ||
dc0b027d TM |
1151 | opendata->o_arg.open_flags = 0; |
1152 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1153 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1154 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1155 | nfs4_init_opendata_res(opendata); | |
b257957e | 1156 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1157 | if (ret != 0) |
1158 | return ret; | |
2ced46c2 | 1159 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1160 | if (IS_ERR(newstate)) |
1161 | return PTR_ERR(newstate); | |
643168c2 | 1162 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1163 | *res = newstate; |
864472e9 TM |
1164 | return 0; |
1165 | } | |
1166 | ||
1167 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1168 | { | |
864472e9 | 1169 | struct nfs4_state *newstate; |
864472e9 TM |
1170 | int ret; |
1171 | ||
1172 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1173 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
1174 | smp_rmb(); |
1175 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1176 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1177 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1178 | if (ret != 0) |
1179 | return ret; | |
2ced46c2 TM |
1180 | if (newstate != state) |
1181 | return -ESTALE; | |
864472e9 TM |
1182 | } |
1183 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1184 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1185 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1186 | if (ret != 0) |
1187 | return ret; | |
2ced46c2 TM |
1188 | if (newstate != state) |
1189 | return -ESTALE; | |
864472e9 TM |
1190 | } |
1191 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1192 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1193 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1194 | if (ret != 0) |
1195 | return ret; | |
2ced46c2 TM |
1196 | if (newstate != state) |
1197 | return -ESTALE; | |
864472e9 | 1198 | } |
1ac7e2fd TM |
1199 | /* |
1200 | * We may have performed cached opens for all three recoveries. | |
1201 | * Check if we need to update the current stateid. | |
1202 | */ | |
1203 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
1204 | memcmp(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)) != 0) { | |
8bda4e4c | 1205 | write_seqlock(&state->seqlock); |
1ac7e2fd TM |
1206 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
1207 | memcpy(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)); | |
8bda4e4c | 1208 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1209 | } |
864472e9 TM |
1210 | return 0; |
1211 | } | |
1212 | ||
1da177e4 LT |
1213 | /* |
1214 | * OPEN_RECLAIM: | |
1215 | * reclaim state on the server after a reboot. | |
1da177e4 | 1216 | */ |
539cd03a | 1217 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1218 | { |
1ac7e2fd | 1219 | struct nfs_delegation *delegation; |
864472e9 | 1220 | struct nfs4_opendata *opendata; |
dc0b027d | 1221 | fmode_t delegation_type = 0; |
1da177e4 LT |
1222 | int status; |
1223 | ||
6f220ed5 TM |
1224 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1225 | if (IS_ERR(opendata)) | |
1226 | return PTR_ERR(opendata); | |
864472e9 TM |
1227 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
1228 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
1229 | rcu_read_lock(); |
1230 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1231 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1232 | delegation_type = delegation->type; |
1ac7e2fd | 1233 | rcu_read_unlock(); |
864472e9 TM |
1234 | opendata->o_arg.u.delegation_type = delegation_type; |
1235 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1236 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1237 | return status; |
1238 | } | |
1239 | ||
539cd03a | 1240 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1241 | { |
1242 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1243 | struct nfs4_exception exception = { }; | |
1244 | int err; | |
1245 | do { | |
539cd03a | 1246 | err = _nfs4_do_open_reclaim(ctx, state); |
168667c4 | 1247 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1248 | break; |
1249 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1250 | } while (exception.retry); |
1251 | return err; | |
1252 | } | |
1253 | ||
864472e9 TM |
1254 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1255 | { | |
1256 | struct nfs_open_context *ctx; | |
1257 | int ret; | |
1258 | ||
1259 | ctx = nfs4_state_find_open_context(state); | |
1260 | if (IS_ERR(ctx)) | |
1261 | return PTR_ERR(ctx); | |
539cd03a | 1262 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1263 | put_nfs_open_context(ctx); |
1264 | return ret; | |
1265 | } | |
1266 | ||
13437e12 | 1267 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 1268 | { |
e56e0b78 | 1269 | struct nfs4_opendata *opendata; |
864472e9 | 1270 | int ret; |
1da177e4 | 1271 | |
6f220ed5 TM |
1272 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1273 | if (IS_ERR(opendata)) | |
1274 | return PTR_ERR(opendata); | |
e56e0b78 | 1275 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
13437e12 | 1276 | memcpy(opendata->o_arg.u.delegation.data, stateid->data, |
e56e0b78 | 1277 | sizeof(opendata->o_arg.u.delegation.data)); |
864472e9 | 1278 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 1279 | nfs4_opendata_put(opendata); |
864472e9 | 1280 | return ret; |
1da177e4 LT |
1281 | } |
1282 | ||
13437e12 | 1283 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
1284 | { |
1285 | struct nfs4_exception exception = { }; | |
539cd03a | 1286 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
1287 | int err; |
1288 | do { | |
13437e12 | 1289 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
1290 | switch (err) { |
1291 | case 0: | |
965b5d67 TM |
1292 | case -ENOENT: |
1293 | case -ESTALE: | |
1294 | goto out; | |
bcfa49f6 RL |
1295 | case -NFS4ERR_BADSESSION: |
1296 | case -NFS4ERR_BADSLOT: | |
1297 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1298 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1299 | case -NFS4ERR_DEADSESSION: | |
0400a6b0 | 1300 | nfs4_schedule_session_recovery(server->nfs_client->cl_session); |
bcfa49f6 | 1301 | goto out; |
1da177e4 LT |
1302 | case -NFS4ERR_STALE_CLIENTID: |
1303 | case -NFS4ERR_STALE_STATEID: | |
1304 | case -NFS4ERR_EXPIRED: | |
1305 | /* Don't recall a delegation if it was lost */ | |
0400a6b0 | 1306 | nfs4_schedule_lease_recovery(server->nfs_client); |
965b5d67 TM |
1307 | goto out; |
1308 | case -ERESTARTSYS: | |
1309 | /* | |
1310 | * The show must go on: exit, but mark the | |
1311 | * stateid as needing recovery. | |
1312 | */ | |
1313 | case -NFS4ERR_ADMIN_REVOKED: | |
1314 | case -NFS4ERR_BAD_STATEID: | |
0400a6b0 | 1315 | nfs4_schedule_stateid_recovery(server, state); |
168667c4 TM |
1316 | case -EKEYEXPIRED: |
1317 | /* | |
1318 | * User RPCSEC_GSS context has expired. | |
1319 | * We cannot recover this stateid now, so | |
1320 | * skip it and allow recovery thread to | |
1321 | * proceed. | |
1322 | */ | |
965b5d67 TM |
1323 | case -ENOMEM: |
1324 | err = 0; | |
1325 | goto out; | |
1da177e4 LT |
1326 | } |
1327 | err = nfs4_handle_exception(server, err, &exception); | |
1328 | } while (exception.retry); | |
965b5d67 | 1329 | out: |
1da177e4 LT |
1330 | return err; |
1331 | } | |
1332 | ||
cdd4e68b TM |
1333 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1334 | { | |
1335 | struct nfs4_opendata *data = calldata; | |
1336 | ||
1337 | data->rpc_status = task->tk_status; | |
26e976a8 | 1338 | if (data->rpc_status == 0) { |
cdd4e68b TM |
1339 | memcpy(data->o_res.stateid.data, data->c_res.stateid.data, |
1340 | sizeof(data->o_res.stateid.data)); | |
bb22629e | 1341 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1342 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1343 | data->rpc_done = 1; |
26e976a8 | 1344 | } |
cdd4e68b TM |
1345 | } |
1346 | ||
1347 | static void nfs4_open_confirm_release(void *calldata) | |
1348 | { | |
1349 | struct nfs4_opendata *data = calldata; | |
1350 | struct nfs4_state *state = NULL; | |
1351 | ||
1352 | /* If this request hasn't been cancelled, do nothing */ | |
1353 | if (data->cancelled == 0) | |
1354 | goto out_free; | |
1355 | /* In case of error, no cleanup! */ | |
3e309914 | 1356 | if (!data->rpc_done) |
cdd4e68b | 1357 | goto out_free; |
cdd4e68b | 1358 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1359 | if (!IS_ERR(state)) |
643168c2 | 1360 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1361 | out_free: |
c6d00e63 | 1362 | nfs4_opendata_put(data); |
cdd4e68b TM |
1363 | } |
1364 | ||
1365 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1366 | .rpc_call_done = nfs4_open_confirm_done, |
1367 | .rpc_release = nfs4_open_confirm_release, | |
1368 | }; | |
1369 | ||
1370 | /* | |
1371 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1372 | */ | |
1373 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1374 | { | |
1375 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1376 | struct rpc_task *task; | |
5138fde0 TM |
1377 | struct rpc_message msg = { |
1378 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1379 | .rpc_argp = &data->c_arg, | |
1380 | .rpc_resp = &data->c_res, | |
1381 | .rpc_cred = data->owner->so_cred, | |
1382 | }; | |
c970aa85 TM |
1383 | struct rpc_task_setup task_setup_data = { |
1384 | .rpc_client = server->client, | |
5138fde0 | 1385 | .rpc_message = &msg, |
c970aa85 TM |
1386 | .callback_ops = &nfs4_open_confirm_ops, |
1387 | .callback_data = data, | |
101070ca | 1388 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1389 | .flags = RPC_TASK_ASYNC, |
1390 | }; | |
1da177e4 LT |
1391 | int status; |
1392 | ||
c6d00e63 | 1393 | kref_get(&data->kref); |
3e309914 TM |
1394 | data->rpc_done = 0; |
1395 | data->rpc_status = 0; | |
5138fde0 | 1396 | data->timestamp = jiffies; |
c970aa85 | 1397 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1398 | if (IS_ERR(task)) |
cdd4e68b | 1399 | return PTR_ERR(task); |
cdd4e68b TM |
1400 | status = nfs4_wait_for_completion_rpc_task(task); |
1401 | if (status != 0) { | |
1402 | data->cancelled = 1; | |
1403 | smp_wmb(); | |
1404 | } else | |
1405 | status = data->rpc_status; | |
e6b3c4db | 1406 | rpc_put_task(task); |
1da177e4 LT |
1407 | return status; |
1408 | } | |
1409 | ||
24ac23ab | 1410 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1411 | { |
24ac23ab TM |
1412 | struct nfs4_opendata *data = calldata; |
1413 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 1414 | |
24ac23ab TM |
1415 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
1416 | return; | |
aac00a8d TM |
1417 | /* |
1418 | * Check if we still need to send an OPEN call, or if we can use | |
1419 | * a delegation instead. | |
1420 | */ | |
1421 | if (data->state != NULL) { | |
1422 | struct nfs_delegation *delegation; | |
1423 | ||
dc0b027d | 1424 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1425 | goto out_no_action; |
aac00a8d TM |
1426 | rcu_read_lock(); |
1427 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
1428 | if (delegation != NULL && | |
15c831bf | 1429 | test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) == 0) { |
aac00a8d | 1430 | rcu_read_unlock(); |
6ee41268 | 1431 | goto out_no_action; |
aac00a8d TM |
1432 | } |
1433 | rcu_read_unlock(); | |
1434 | } | |
24ac23ab | 1435 | /* Update sequence id. */ |
9f958ab8 | 1436 | data->o_arg.id = sp->so_owner_id.id; |
1f0e890d | 1437 | data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; |
6f220ed5 | 1438 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 1439 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
6f220ed5 TM |
1440 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1441 | } | |
26e976a8 | 1442 | data->timestamp = jiffies; |
035168ab | 1443 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c AA |
1444 | &data->o_arg.seq_args, |
1445 | &data->o_res.seq_res, 1, task)) | |
1446 | return; | |
5138fde0 | 1447 | rpc_call_start(task); |
6ee41268 TM |
1448 | return; |
1449 | out_no_action: | |
1450 | task->tk_action = NULL; | |
1451 | ||
24ac23ab | 1452 | } |
1da177e4 | 1453 | |
b257957e AB |
1454 | static void nfs4_recover_open_prepare(struct rpc_task *task, void *calldata) |
1455 | { | |
1456 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
1457 | nfs4_open_prepare(task, calldata); | |
1458 | } | |
1459 | ||
24ac23ab TM |
1460 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1461 | { | |
1462 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1463 | |
24ac23ab | 1464 | data->rpc_status = task->tk_status; |
d898528c | 1465 | |
14516c3a TM |
1466 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1467 | return; | |
d898528c | 1468 | |
24ac23ab TM |
1469 | if (task->tk_status == 0) { |
1470 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1471 | case S_IFREG: |
1472 | break; | |
1473 | case S_IFLNK: | |
24ac23ab | 1474 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1475 | break; |
1476 | case S_IFDIR: | |
24ac23ab | 1477 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1478 | break; |
1479 | default: | |
24ac23ab | 1480 | data->rpc_status = -ENOTDIR; |
6f926b5b | 1481 | } |
26e976a8 | 1482 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1483 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1484 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1485 | } |
3e309914 | 1486 | data->rpc_done = 1; |
24ac23ab | 1487 | } |
6f926b5b | 1488 | |
24ac23ab TM |
1489 | static void nfs4_open_release(void *calldata) |
1490 | { | |
1491 | struct nfs4_opendata *data = calldata; | |
1492 | struct nfs4_state *state = NULL; | |
1493 | ||
1494 | /* If this request hasn't been cancelled, do nothing */ | |
1495 | if (data->cancelled == 0) | |
1496 | goto out_free; | |
1497 | /* In case of error, no cleanup! */ | |
3e309914 | 1498 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1499 | goto out_free; |
1500 | /* In case we need an open_confirm, no cleanup! */ | |
1501 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1502 | goto out_free; | |
24ac23ab | 1503 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1504 | if (!IS_ERR(state)) |
643168c2 | 1505 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1506 | out_free: |
c6d00e63 | 1507 | nfs4_opendata_put(data); |
24ac23ab TM |
1508 | } |
1509 | ||
1510 | static const struct rpc_call_ops nfs4_open_ops = { | |
1511 | .rpc_call_prepare = nfs4_open_prepare, | |
1512 | .rpc_call_done = nfs4_open_done, | |
1513 | .rpc_release = nfs4_open_release, | |
1514 | }; | |
1515 | ||
b257957e AB |
1516 | static const struct rpc_call_ops nfs4_recover_open_ops = { |
1517 | .rpc_call_prepare = nfs4_recover_open_prepare, | |
1518 | .rpc_call_done = nfs4_open_done, | |
1519 | .rpc_release = nfs4_open_release, | |
1520 | }; | |
1521 | ||
1522 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) | |
24ac23ab TM |
1523 | { |
1524 | struct inode *dir = data->dir->d_inode; | |
1525 | struct nfs_server *server = NFS_SERVER(dir); | |
1526 | struct nfs_openargs *o_arg = &data->o_arg; | |
1527 | struct nfs_openres *o_res = &data->o_res; | |
1528 | struct rpc_task *task; | |
5138fde0 TM |
1529 | struct rpc_message msg = { |
1530 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1531 | .rpc_argp = o_arg, | |
1532 | .rpc_resp = o_res, | |
1533 | .rpc_cred = data->owner->so_cred, | |
1534 | }; | |
c970aa85 TM |
1535 | struct rpc_task_setup task_setup_data = { |
1536 | .rpc_client = server->client, | |
5138fde0 | 1537 | .rpc_message = &msg, |
c970aa85 TM |
1538 | .callback_ops = &nfs4_open_ops, |
1539 | .callback_data = data, | |
101070ca | 1540 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1541 | .flags = RPC_TASK_ASYNC, |
1542 | }; | |
24ac23ab TM |
1543 | int status; |
1544 | ||
c6d00e63 | 1545 | kref_get(&data->kref); |
3e309914 TM |
1546 | data->rpc_done = 0; |
1547 | data->rpc_status = 0; | |
2ced46c2 | 1548 | data->cancelled = 0; |
b257957e AB |
1549 | if (isrecover) |
1550 | task_setup_data.callback_ops = &nfs4_recover_open_ops; | |
c970aa85 | 1551 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1552 | if (IS_ERR(task)) |
1553 | return PTR_ERR(task); | |
1554 | status = nfs4_wait_for_completion_rpc_task(task); | |
1555 | if (status != 0) { | |
1556 | data->cancelled = 1; | |
1557 | smp_wmb(); | |
1558 | } else | |
1559 | status = data->rpc_status; | |
1560 | rpc_put_task(task); | |
1561 | ||
1562 | return status; | |
1563 | } | |
1564 | ||
1565 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1566 | { | |
1567 | struct inode *dir = data->dir->d_inode; | |
1568 | struct nfs_openres *o_res = &data->o_res; | |
1569 | int status; | |
1570 | ||
1571 | status = nfs4_run_open_task(data, 1); | |
1572 | if (status != 0 || !data->rpc_done) | |
1573 | return status; | |
1574 | ||
1575 | nfs_refresh_inode(dir, o_res->dir_attr); | |
1576 | ||
1577 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { | |
1578 | status = _nfs4_proc_open_confirm(data); | |
1579 | if (status != 0) | |
1580 | return status; | |
1581 | } | |
1582 | ||
1583 | return status; | |
1584 | } | |
1585 | ||
1586 | /* | |
1587 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1588 | */ | |
1589 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1590 | { | |
1591 | struct inode *dir = data->dir->d_inode; | |
1592 | struct nfs_server *server = NFS_SERVER(dir); | |
1593 | struct nfs_openargs *o_arg = &data->o_arg; | |
1594 | struct nfs_openres *o_res = &data->o_res; | |
1595 | int status; | |
1596 | ||
1597 | status = nfs4_run_open_task(data, 0); | |
3e309914 | 1598 | if (status != 0 || !data->rpc_done) |
24ac23ab TM |
1599 | return status; |
1600 | ||
56ae19f3 TM |
1601 | if (o_arg->open_flags & O_CREAT) { |
1602 | update_changeattr(dir, &o_res->cinfo); | |
1603 | nfs_post_op_update_inode(dir, o_res->dir_attr); | |
1604 | } else | |
1605 | nfs_refresh_inode(dir, o_res->dir_attr); | |
0df5dd4a TM |
1606 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1607 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1608 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1609 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1610 | if (status != 0) |
24ac23ab | 1611 | return status; |
1da177e4 LT |
1612 | } |
1613 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1614 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1615 | return 0; |
1da177e4 LT |
1616 | } |
1617 | ||
d83217c1 | 1618 | static int nfs4_client_recover_expired_lease(struct nfs_client *clp) |
58d9714a | 1619 | { |
a78cb57a | 1620 | unsigned int loop; |
6b30954e | 1621 | int ret; |
58d9714a | 1622 | |
a78cb57a | 1623 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { |
65de872e | 1624 | ret = nfs4_wait_clnt_recover(clp); |
6b30954e | 1625 | if (ret != 0) |
a78cb57a | 1626 | break; |
e598d843 TM |
1627 | if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) && |
1628 | !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state)) | |
6b30954e | 1629 | break; |
0400a6b0 | 1630 | nfs4_schedule_state_manager(clp); |
a78cb57a | 1631 | ret = -EIO; |
6b30954e | 1632 | } |
a78cb57a | 1633 | return ret; |
58d9714a TM |
1634 | } |
1635 | ||
d83217c1 AA |
1636 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1637 | { | |
1638 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1639 | } | |
1640 | ||
1da177e4 LT |
1641 | /* |
1642 | * OPEN_EXPIRED: | |
1643 | * reclaim state on the server after a network partition. | |
1644 | * Assumes caller holds the appropriate lock | |
1645 | */ | |
539cd03a | 1646 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1647 | { |
e56e0b78 | 1648 | struct nfs4_opendata *opendata; |
864472e9 | 1649 | int ret; |
1da177e4 | 1650 | |
6f220ed5 TM |
1651 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1652 | if (IS_ERR(opendata)) | |
1653 | return PTR_ERR(opendata); | |
864472e9 | 1654 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1655 | if (ret == -ESTALE) |
3d4ff43d | 1656 | d_drop(ctx->dentry); |
c6d00e63 | 1657 | nfs4_opendata_put(opendata); |
864472e9 | 1658 | return ret; |
1da177e4 LT |
1659 | } |
1660 | ||
a9ed2e25 | 1661 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1662 | { |
539cd03a | 1663 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1664 | struct nfs4_exception exception = { }; |
1665 | int err; | |
1666 | ||
1667 | do { | |
539cd03a | 1668 | err = _nfs4_open_expired(ctx, state); |
a9ed2e25 TM |
1669 | switch (err) { |
1670 | default: | |
1671 | goto out; | |
1672 | case -NFS4ERR_GRACE: | |
1673 | case -NFS4ERR_DELAY: | |
1674 | nfs4_handle_exception(server, err, &exception); | |
1675 | err = 0; | |
1676 | } | |
202b50dc | 1677 | } while (exception.retry); |
a9ed2e25 | 1678 | out: |
202b50dc TM |
1679 | return err; |
1680 | } | |
1681 | ||
1da177e4 LT |
1682 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1683 | { | |
1da177e4 | 1684 | struct nfs_open_context *ctx; |
864472e9 | 1685 | int ret; |
1da177e4 | 1686 | |
864472e9 TM |
1687 | ctx = nfs4_state_find_open_context(state); |
1688 | if (IS_ERR(ctx)) | |
1689 | return PTR_ERR(ctx); | |
539cd03a | 1690 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1691 | put_nfs_open_context(ctx); |
1692 | return ret; | |
1da177e4 LT |
1693 | } |
1694 | ||
f062eb6c BS |
1695 | #if defined(CONFIG_NFS_V4_1) |
1696 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
1697 | { | |
1698 | int status; | |
1699 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1700 | ||
1701 | status = nfs41_test_stateid(server, state); | |
1702 | if (status == NFS_OK) | |
1703 | return 0; | |
1704 | nfs41_free_stateid(server, state); | |
1705 | return nfs4_open_expired(sp, state); | |
1706 | } | |
1707 | #endif | |
1708 | ||
aa53ed54 JL |
1709 | /* |
1710 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1711 | * fields corresponding to attributes that were used to store the verifier. | |
1712 | * Make sure we clobber those fields in the later setattr call | |
1713 | */ | |
1714 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1715 | { | |
1716 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1717 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1718 | sattr->ia_valid |= ATTR_ATIME; | |
1719 | ||
1720 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1721 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1722 | sattr->ia_valid |= ATTR_MTIME; | |
1723 | } | |
1724 | ||
1da177e4 | 1725 | /* |
24ac23ab | 1726 | * Returns a referenced nfs4_state |
1da177e4 | 1727 | */ |
82a2c1b7 | 1728 | static int _nfs4_do_open(struct inode *dir, struct dentry *dentry, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res) |
1da177e4 LT |
1729 | { |
1730 | struct nfs4_state_owner *sp; | |
1731 | struct nfs4_state *state = NULL; | |
1732 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1733 | struct nfs4_opendata *opendata; |
aac00a8d | 1734 | int status; |
1da177e4 LT |
1735 | |
1736 | /* Protect against reboot recovery conflicts */ | |
1da177e4 LT |
1737 | status = -ENOMEM; |
1738 | if (!(sp = nfs4_get_state_owner(server, cred))) { | |
1739 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); | |
1740 | goto out_err; | |
1741 | } | |
58d9714a TM |
1742 | status = nfs4_recover_expired_lease(server); |
1743 | if (status != 0) | |
b4454fe1 | 1744 | goto err_put_state_owner; |
82a2c1b7 AV |
1745 | if (dentry->d_inode != NULL) |
1746 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 1747 | status = -ENOMEM; |
82a2c1b7 | 1748 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, GFP_KERNEL); |
e56e0b78 | 1749 | if (opendata == NULL) |
95d35cb4 | 1750 | goto err_put_state_owner; |
1da177e4 | 1751 | |
82a2c1b7 AV |
1752 | if (dentry->d_inode != NULL) |
1753 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 1754 | |
24ac23ab | 1755 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1756 | if (status != 0) |
c6d00e63 | 1757 | goto err_opendata_put; |
1da177e4 | 1758 | |
24ac23ab | 1759 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1760 | status = PTR_ERR(state); |
1761 | if (IS_ERR(state)) | |
c6d00e63 | 1762 | goto err_opendata_put; |
0df5dd4a | 1763 | if (server->caps & NFS_CAP_POSIX_LOCK) |
8e469ebd | 1764 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); |
0ab64e0e TM |
1765 | |
1766 | if (opendata->o_arg.open_flags & O_EXCL) { | |
1767 | nfs4_exclusive_attrset(opendata, sattr); | |
1768 | ||
1769 | nfs_fattr_init(opendata->o_res.f_attr); | |
1770 | status = nfs4_do_setattr(state->inode, cred, | |
1771 | opendata->o_res.f_attr, sattr, | |
1772 | state); | |
1773 | if (status == 0) | |
1774 | nfs_setattr_update_inode(state->inode, sattr); | |
1775 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
1776 | } | |
c6d00e63 | 1777 | nfs4_opendata_put(opendata); |
1da177e4 | 1778 | nfs4_put_state_owner(sp); |
1da177e4 LT |
1779 | *res = state; |
1780 | return 0; | |
c6d00e63 TM |
1781 | err_opendata_put: |
1782 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
1783 | err_put_state_owner: |
1784 | nfs4_put_state_owner(sp); | |
1da177e4 | 1785 | out_err: |
1da177e4 LT |
1786 | *res = NULL; |
1787 | return status; | |
1788 | } | |
1789 | ||
1790 | ||
82a2c1b7 | 1791 | static struct nfs4_state *nfs4_do_open(struct inode *dir, struct dentry *dentry, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred) |
1da177e4 LT |
1792 | { |
1793 | struct nfs4_exception exception = { }; | |
1794 | struct nfs4_state *res; | |
1795 | int status; | |
1796 | ||
1797 | do { | |
82a2c1b7 | 1798 | status = _nfs4_do_open(dir, dentry, fmode, flags, sattr, cred, &res); |
1da177e4 LT |
1799 | if (status == 0) |
1800 | break; | |
1801 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1802 | * book-keeping w.r.t. state-changing operations | |
1803 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1804 | * It is actually a sign of a bug on the client or on the server. | |
1805 | * | |
1806 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1807 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1808 | * have unhashed the old state_owner for us, and that we can |
1809 | * therefore safely retry using a new one. We should still warn | |
1810 | * the user though... | |
1811 | */ | |
1812 | if (status == -NFS4ERR_BAD_SEQID) { | |
6f43ddcc TM |
1813 | printk(KERN_WARNING "NFS: v4 server %s " |
1814 | " returned a bad sequence-id error!\n", | |
1815 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1816 | exception.retry = 1; |
1817 | continue; | |
1818 | } | |
550f5747 TM |
1819 | /* |
1820 | * BAD_STATEID on OPEN means that the server cancelled our | |
1821 | * state before it received the OPEN_CONFIRM. | |
1822 | * Recover by retrying the request as per the discussion | |
1823 | * on Page 181 of RFC3530. | |
1824 | */ | |
1825 | if (status == -NFS4ERR_BAD_STATEID) { | |
1826 | exception.retry = 1; | |
1827 | continue; | |
1828 | } | |
aac00a8d TM |
1829 | if (status == -EAGAIN) { |
1830 | /* We must have found a delegation */ | |
1831 | exception.retry = 1; | |
1832 | continue; | |
1833 | } | |
1da177e4 LT |
1834 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1835 | status, &exception)); | |
1836 | } while (exception.retry); | |
1837 | return res; | |
1838 | } | |
1839 | ||
659bfcd6 TM |
1840 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1841 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1842 | struct nfs4_state *state) | |
1da177e4 | 1843 | { |
3e4f6290 | 1844 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1845 | struct nfs_setattrargs arg = { |
3e4f6290 | 1846 | .fh = NFS_FH(inode), |
1da177e4 LT |
1847 | .iap = sattr, |
1848 | .server = server, | |
1849 | .bitmask = server->attr_bitmask, | |
1850 | }; | |
1851 | struct nfs_setattrres res = { | |
1852 | .fattr = fattr, | |
1853 | .server = server, | |
1854 | }; | |
1855 | struct rpc_message msg = { | |
659bfcd6 TM |
1856 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
1857 | .rpc_argp = &arg, | |
1858 | .rpc_resp = &res, | |
1859 | .rpc_cred = cred, | |
1da177e4 | 1860 | }; |
26e976a8 | 1861 | unsigned long timestamp = jiffies; |
65e4308d | 1862 | int status; |
1da177e4 | 1863 | |
0e574af1 | 1864 | nfs_fattr_init(fattr); |
1da177e4 | 1865 | |
3e4f6290 TM |
1866 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) { |
1867 | /* Use that stateid */ | |
1868 | } else if (state != NULL) { | |
77041ed9 | 1869 | nfs4_copy_stateid(&arg.stateid, state, current->files, current->tgid); |
08e9eac4 | 1870 | } else |
1da177e4 LT |
1871 | memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid)); |
1872 | ||
7c513058 | 1873 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
1874 | if (status == 0 && state != NULL) |
1875 | renew_lease(server, timestamp); | |
65e4308d | 1876 | return status; |
1da177e4 LT |
1877 | } |
1878 | ||
659bfcd6 TM |
1879 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1880 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1881 | struct nfs4_state *state) | |
1da177e4 | 1882 | { |
3e4f6290 | 1883 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
1884 | struct nfs4_exception exception = { }; |
1885 | int err; | |
1886 | do { | |
1887 | err = nfs4_handle_exception(server, | |
659bfcd6 | 1888 | _nfs4_do_setattr(inode, cred, fattr, sattr, state), |
1da177e4 LT |
1889 | &exception); |
1890 | } while (exception.retry); | |
1891 | return err; | |
1892 | } | |
1893 | ||
1894 | struct nfs4_closedata { | |
1895 | struct inode *inode; | |
1896 | struct nfs4_state *state; | |
1897 | struct nfs_closeargs arg; | |
1898 | struct nfs_closeres res; | |
516a6af6 | 1899 | struct nfs_fattr fattr; |
26e976a8 | 1900 | unsigned long timestamp; |
f7e8917a FI |
1901 | bool roc; |
1902 | u32 roc_barrier; | |
1da177e4 LT |
1903 | }; |
1904 | ||
963d8fe5 | 1905 | static void nfs4_free_closedata(void *data) |
9512135d | 1906 | { |
963d8fe5 TM |
1907 | struct nfs4_closedata *calldata = data; |
1908 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 1909 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 1910 | |
f7e8917a FI |
1911 | if (calldata->roc) |
1912 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
1913 | nfs4_put_open_state(calldata->state); |
1914 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 1915 | nfs4_put_state_owner(sp); |
643168c2 | 1916 | nfs_sb_deactive(sb); |
9512135d TM |
1917 | kfree(calldata); |
1918 | } | |
1919 | ||
88069f77 TM |
1920 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
1921 | fmode_t fmode) | |
1922 | { | |
1923 | spin_lock(&state->owner->so_lock); | |
1924 | if (!(fmode & FMODE_READ)) | |
1925 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1926 | if (!(fmode & FMODE_WRITE)) | |
1927 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1928 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1929 | spin_unlock(&state->owner->so_lock); | |
1930 | } | |
1931 | ||
963d8fe5 | 1932 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 1933 | { |
963d8fe5 | 1934 | struct nfs4_closedata *calldata = data; |
1da177e4 | 1935 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
1936 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
1937 | ||
14516c3a TM |
1938 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
1939 | return; | |
1da177e4 LT |
1940 | /* hmm. we are done with the inode, and in the process of freeing |
1941 | * the state_owner. we keep this around to process errors | |
1942 | */ | |
1da177e4 LT |
1943 | switch (task->tk_status) { |
1944 | case 0: | |
f7e8917a FI |
1945 | if (calldata->roc) |
1946 | pnfs_roc_set_barrier(state->inode, | |
1947 | calldata->roc_barrier); | |
45328c35 | 1948 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 1949 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
1950 | nfs4_close_clear_stateid_flags(state, |
1951 | calldata->arg.fmode); | |
1da177e4 LT |
1952 | break; |
1953 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
1954 | case -NFS4ERR_OLD_STATEID: |
1955 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 1956 | case -NFS4ERR_EXPIRED: |
dc0b027d | 1957 | if (calldata->arg.fmode == 0) |
9e33bed5 | 1958 | break; |
1da177e4 | 1959 | default: |
72211dbe TM |
1960 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
1961 | rpc_restart_call_prepare(task); | |
1da177e4 | 1962 | } |
72211dbe | 1963 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 1964 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
1da177e4 LT |
1965 | } |
1966 | ||
4ce70ada | 1967 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 1968 | { |
4ce70ada | 1969 | struct nfs4_closedata *calldata = data; |
9512135d | 1970 | struct nfs4_state *state = calldata->state; |
88069f77 | 1971 | int call_close = 0; |
9512135d | 1972 | |
963d8fe5 | 1973 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 1974 | return; |
003707c7 | 1975 | |
88069f77 TM |
1976 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
1977 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 1978 | spin_lock(&state->owner->so_lock); |
003707c7 | 1979 | /* Calculate the change in open mode */ |
e7616923 | 1980 | if (state->n_rdwr == 0) { |
003707c7 | 1981 | if (state->n_rdonly == 0) { |
88069f77 TM |
1982 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
1983 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
1984 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
1985 | } |
1986 | if (state->n_wronly == 0) { | |
88069f77 TM |
1987 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
1988 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
1989 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 1990 | } |
e7616923 | 1991 | } |
4cecb76f | 1992 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
1993 | |
1994 | if (!call_close) { | |
963d8fe5 TM |
1995 | /* Note: exit _without_ calling nfs4_close_done */ |
1996 | task->tk_action = NULL; | |
9512135d TM |
1997 | return; |
1998 | } | |
88069f77 | 1999 | |
f7e8917a | 2000 | if (calldata->arg.fmode == 0) { |
88069f77 | 2001 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a FI |
2002 | if (calldata->roc && |
2003 | pnfs_roc_drain(calldata->inode, &calldata->roc_barrier)) { | |
2004 | rpc_sleep_on(&NFS_SERVER(calldata->inode)->roc_rpcwaitq, | |
2005 | task, NULL); | |
2006 | return; | |
2007 | } | |
2008 | } | |
88069f77 | 2009 | |
516a6af6 | 2010 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2011 | calldata->timestamp = jiffies; |
035168ab | 2012 | if (nfs4_setup_sequence(NFS_SERVER(calldata->inode), |
19ddab06 AA |
2013 | &calldata->arg.seq_args, &calldata->res.seq_res, |
2014 | 1, task)) | |
2015 | return; | |
5138fde0 | 2016 | rpc_call_start(task); |
1da177e4 LT |
2017 | } |
2018 | ||
963d8fe5 | 2019 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2020 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2021 | .rpc_call_done = nfs4_close_done, |
2022 | .rpc_release = nfs4_free_closedata, | |
2023 | }; | |
2024 | ||
1da177e4 LT |
2025 | /* |
2026 | * It is possible for data to be read/written from a mem-mapped file | |
2027 | * after the sys_close call (which hits the vfs layer as a flush). | |
2028 | * This means that we can't safely call nfsv4 close on a file until | |
2029 | * the inode is cleared. This in turn means that we are not good | |
2030 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2031 | * share state even when we are done with one of the three share | |
2032 | * stateid's in the inode. | |
2033 | * | |
2034 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2035 | */ | |
643168c2 | 2036 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait, bool roc) |
1da177e4 | 2037 | { |
4a35bd41 | 2038 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2039 | struct nfs4_closedata *calldata; |
b39e625b TM |
2040 | struct nfs4_state_owner *sp = state->owner; |
2041 | struct rpc_task *task; | |
5138fde0 TM |
2042 | struct rpc_message msg = { |
2043 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2044 | .rpc_cred = state->owner->so_cred, | |
2045 | }; | |
c970aa85 TM |
2046 | struct rpc_task_setup task_setup_data = { |
2047 | .rpc_client = server->client, | |
5138fde0 | 2048 | .rpc_message = &msg, |
c970aa85 | 2049 | .callback_ops = &nfs4_close_ops, |
101070ca | 2050 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2051 | .flags = RPC_TASK_ASYNC, |
2052 | }; | |
9512135d | 2053 | int status = -ENOMEM; |
1da177e4 | 2054 | |
8535b2be | 2055 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2056 | if (calldata == NULL) |
9512135d | 2057 | goto out; |
4a35bd41 | 2058 | calldata->inode = state->inode; |
1da177e4 | 2059 | calldata->state = state; |
4a35bd41 | 2060 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2061 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2062 | /* Serialization for the sequence id */ |
8535b2be | 2063 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2064 | if (calldata->arg.seqid == NULL) |
2065 | goto out_free_calldata; | |
dc0b027d | 2066 | calldata->arg.fmode = 0; |
a65318bf | 2067 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2068 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2069 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2070 | calldata->res.server = server; |
f7e8917a | 2071 | calldata->roc = roc; |
643168c2 | 2072 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2073 | |
1174dd1f TM |
2074 | msg.rpc_argp = &calldata->arg; |
2075 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2076 | task_setup_data.callback_data = calldata; |
2077 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2078 | if (IS_ERR(task)) |
2079 | return PTR_ERR(task); | |
a49c3c77 TM |
2080 | status = 0; |
2081 | if (wait) | |
2082 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2083 | rpc_put_task(task); |
a49c3c77 | 2084 | return status; |
9512135d TM |
2085 | out_free_calldata: |
2086 | kfree(calldata); | |
2087 | out: | |
f7e8917a FI |
2088 | if (roc) |
2089 | pnfs_roc_release(state->inode); | |
b39e625b TM |
2090 | nfs4_put_open_state(state); |
2091 | nfs4_put_state_owner(sp); | |
9512135d | 2092 | return status; |
1da177e4 LT |
2093 | } |
2094 | ||
2b484297 | 2095 | static struct inode * |
cd9a1c0e | 2096 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2097 | { |
1da177e4 | 2098 | struct nfs4_state *state; |
1da177e4 | 2099 | |
565277f6 | 2100 | /* Protect against concurrent sillydeletes */ |
3d4ff43d | 2101 | state = nfs4_do_open(dir, ctx->dentry, ctx->mode, open_flags, attr, ctx->cred); |
f46e0bd3 TM |
2102 | if (IS_ERR(state)) |
2103 | return ERR_CAST(state); | |
cd9a1c0e | 2104 | ctx->state = state; |
f46e0bd3 | 2105 | return igrab(state->inode); |
1da177e4 LT |
2106 | } |
2107 | ||
1185a552 | 2108 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2109 | { |
2110 | if (ctx->state == NULL) | |
2111 | return; | |
2112 | if (is_sync) | |
643168c2 | 2113 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2114 | else |
643168c2 | 2115 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2116 | } |
1da177e4 LT |
2117 | |
2118 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2119 | { | |
43652ad5 BH |
2120 | struct nfs4_server_caps_arg args = { |
2121 | .fhandle = fhandle, | |
2122 | }; | |
1da177e4 LT |
2123 | struct nfs4_server_caps_res res = {}; |
2124 | struct rpc_message msg = { | |
2125 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2126 | .rpc_argp = &args, |
1da177e4 LT |
2127 | .rpc_resp = &res, |
2128 | }; | |
2129 | int status; | |
2130 | ||
7c513058 | 2131 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2132 | if (status == 0) { |
2133 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2134 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2135 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2136 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2137 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2138 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2139 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2140 | server->caps |= NFS_CAP_ACLS; | |
2141 | if (res.has_links != 0) | |
2142 | server->caps |= NFS_CAP_HARDLINKS; | |
2143 | if (res.has_symlinks != 0) | |
2144 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2145 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2146 | server->caps |= NFS_CAP_FILEID; | |
2147 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2148 | server->caps |= NFS_CAP_MODE; | |
2149 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2150 | server->caps |= NFS_CAP_NLINK; | |
2151 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2152 | server->caps |= NFS_CAP_OWNER; | |
2153 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2154 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2155 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2156 | server->caps |= NFS_CAP_ATIME; | |
2157 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2158 | server->caps |= NFS_CAP_CTIME; | |
2159 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2160 | server->caps |= NFS_CAP_MTIME; | |
2161 | ||
a65318bf TM |
2162 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2163 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2164 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 LT |
2165 | server->acl_bitmask = res.acl_bitmask; |
2166 | } | |
cccef3b9 | 2167 | |
1da177e4 LT |
2168 | return status; |
2169 | } | |
2170 | ||
55a97593 | 2171 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2172 | { |
2173 | struct nfs4_exception exception = { }; | |
2174 | int err; | |
2175 | do { | |
2176 | err = nfs4_handle_exception(server, | |
2177 | _nfs4_server_capabilities(server, fhandle), | |
2178 | &exception); | |
2179 | } while (exception.retry); | |
2180 | return err; | |
2181 | } | |
2182 | ||
2183 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2184 | struct nfs_fsinfo *info) | |
2185 | { | |
1da177e4 LT |
2186 | struct nfs4_lookup_root_arg args = { |
2187 | .bitmask = nfs4_fattr_bitmap, | |
2188 | }; | |
2189 | struct nfs4_lookup_res res = { | |
2190 | .server = server, | |
0e574af1 | 2191 | .fattr = info->fattr, |
1da177e4 LT |
2192 | .fh = fhandle, |
2193 | }; | |
2194 | struct rpc_message msg = { | |
2195 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2196 | .rpc_argp = &args, | |
2197 | .rpc_resp = &res, | |
2198 | }; | |
008f55d0 | 2199 | |
0e574af1 | 2200 | nfs_fattr_init(info->fattr); |
7c513058 | 2201 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2202 | } |
2203 | ||
2204 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2205 | struct nfs_fsinfo *info) | |
2206 | { | |
2207 | struct nfs4_exception exception = { }; | |
2208 | int err; | |
2209 | do { | |
fb8a5ba8 BS |
2210 | err = _nfs4_lookup_root(server, fhandle, info); |
2211 | switch (err) { | |
2212 | case 0: | |
2213 | case -NFS4ERR_WRONGSEC: | |
2214 | break; | |
2215 | default: | |
2216 | err = nfs4_handle_exception(server, err, &exception); | |
2217 | } | |
1da177e4 LT |
2218 | } while (exception.retry); |
2219 | return err; | |
2220 | } | |
2221 | ||
8f70e95f BS |
2222 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2223 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2224 | { | |
2225 | struct rpc_auth *auth; | |
2226 | int ret; | |
2227 | ||
2228 | auth = rpcauth_create(flavor, server->client); | |
2229 | if (!auth) { | |
2230 | ret = -EIO; | |
2231 | goto out; | |
2232 | } | |
2233 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2234 | out: |
2235 | return ret; | |
2236 | } | |
2237 | ||
801a16dc | 2238 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2239 | struct nfs_fsinfo *info) |
1da177e4 | 2240 | { |
8f70e95f | 2241 | int i, len, status = 0; |
0fabee24 | 2242 | rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS]; |
1da177e4 | 2243 | |
801a16dc BS |
2244 | len = gss_mech_list_pseudoflavors(&flav_array[0]); |
2245 | flav_array[len] = RPC_AUTH_NULL; | |
2246 | len += 1; | |
8f70e95f BS |
2247 | |
2248 | for (i = 0; i < len; i++) { | |
2249 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); | |
fb8a5ba8 | 2250 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2251 | continue; |
2252 | break; | |
8f70e95f | 2253 | } |
fb8a5ba8 BS |
2254 | /* |
2255 | * -EACCESS could mean that the user doesn't have correct permissions | |
2256 | * to access the mount. It could also mean that we tried to mount | |
2257 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2258 | * existing mount programs don't handle -EACCES very well so it should | |
2259 | * be mapped to -EPERM instead. | |
2260 | */ | |
2261 | if (status == -EACCES) | |
2262 | status = -EPERM; | |
801a16dc BS |
2263 | return status; |
2264 | } | |
2265 | ||
2266 | /* | |
2267 | * get the file handle for the "/" directory on the server | |
2268 | */ | |
2269 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2270 | struct nfs_fsinfo *info) | |
2271 | { | |
fca78d6d | 2272 | int minor_version = server->nfs_client->cl_minorversion; |
801a16dc | 2273 | int status = nfs4_lookup_root(server, fhandle, info); |
fb8a5ba8 BS |
2274 | if ((status == -NFS4ERR_WRONGSEC) && !(server->flags & NFS_MOUNT_SECFLAVOUR)) |
2275 | /* | |
2276 | * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM | |
2277 | * by nfs4_map_errors() as this function exits. | |
2278 | */ | |
fca78d6d | 2279 | status = nfs_v4_minor_ops[minor_version]->find_root_sec(server, fhandle, info); |
1da177e4 LT |
2280 | if (status == 0) |
2281 | status = nfs4_server_capabilities(server, fhandle); | |
2282 | if (status == 0) | |
2283 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2284 | return nfs4_map_errors(status); |
1da177e4 LT |
2285 | } |
2286 | ||
533eb461 | 2287 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); |
6b97fd3d MN |
2288 | /* |
2289 | * Get locations and (maybe) other attributes of a referral. | |
2290 | * Note that we'll actually follow the referral later when | |
2291 | * we detect fsid mismatch in inode revalidation | |
2292 | */ | |
533eb461 AA |
2293 | static int nfs4_get_referral(struct inode *dir, const struct qstr *name, |
2294 | struct nfs_fattr *fattr, struct nfs_fh *fhandle) | |
6b97fd3d MN |
2295 | { |
2296 | int status = -ENOMEM; | |
2297 | struct page *page = NULL; | |
2298 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2299 | |
2300 | page = alloc_page(GFP_KERNEL); | |
2301 | if (page == NULL) | |
2302 | goto out; | |
2303 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2304 | if (locations == NULL) | |
2305 | goto out; | |
2306 | ||
c228fd3a | 2307 | status = nfs4_proc_fs_locations(dir, name, locations, page); |
6b97fd3d MN |
2308 | if (status != 0) |
2309 | goto out; | |
2310 | /* Make sure server returned a different fsid for the referral */ | |
2311 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2312 | dprintk("%s: server did not return a different fsid for" |
2313 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2314 | status = -EIO; |
2315 | goto out; | |
2316 | } | |
533eb461 AA |
2317 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2318 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2319 | |
533eb461 | 2320 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2321 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2322 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2323 | out: | |
2324 | if (page) | |
2325 | __free_page(page); | |
5d7ca35a | 2326 | kfree(locations); |
6b97fd3d MN |
2327 | return status; |
2328 | } | |
2329 | ||
1da177e4 LT |
2330 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2331 | { | |
2332 | struct nfs4_getattr_arg args = { | |
2333 | .fh = fhandle, | |
2334 | .bitmask = server->attr_bitmask, | |
2335 | }; | |
2336 | struct nfs4_getattr_res res = { | |
2337 | .fattr = fattr, | |
2338 | .server = server, | |
2339 | }; | |
2340 | struct rpc_message msg = { | |
2341 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2342 | .rpc_argp = &args, | |
2343 | .rpc_resp = &res, | |
2344 | }; | |
2345 | ||
0e574af1 | 2346 | nfs_fattr_init(fattr); |
7c513058 | 2347 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2348 | } |
2349 | ||
2350 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2351 | { | |
2352 | struct nfs4_exception exception = { }; | |
2353 | int err; | |
2354 | do { | |
2355 | err = nfs4_handle_exception(server, | |
2356 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2357 | &exception); | |
2358 | } while (exception.retry); | |
2359 | return err; | |
2360 | } | |
2361 | ||
2362 | /* | |
2363 | * The file is not closed if it is opened due to the a request to change | |
2364 | * the size of the file. The open call will not be needed once the | |
2365 | * VFS layer lookup-intents are implemented. | |
2366 | * | |
2367 | * Close is called when the inode is destroyed. | |
2368 | * If we haven't opened the file for O_WRONLY, we | |
2369 | * need to in the size_change case to obtain a stateid. | |
2370 | * | |
2371 | * Got race? | |
2372 | * Because OPEN is always done by name in nfsv4, it is | |
2373 | * possible that we opened a different file by the same | |
2374 | * name. We can recognize this race condition, but we | |
2375 | * can't do anything about it besides returning an error. | |
2376 | * | |
2377 | * This will be fixed with VFS changes (lookup-intent). | |
2378 | */ | |
2379 | static int | |
2380 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2381 | struct iattr *sattr) | |
2382 | { | |
08e9eac4 | 2383 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2384 | struct rpc_cred *cred = NULL; |
d530838b | 2385 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2386 | int status; |
2387 | ||
8a1636c4 BH |
2388 | if (pnfs_ld_layoutret_on_setattr(inode)) |
2389 | pnfs_return_layout(inode); | |
2390 | ||
0e574af1 | 2391 | nfs_fattr_init(fattr); |
1da177e4 | 2392 | |
d530838b | 2393 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2394 | if (sattr->ia_valid & ATTR_FILE) { |
2395 | struct nfs_open_context *ctx; | |
2396 | ||
2397 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2398 | if (ctx) { |
2399 | cred = ctx->cred; | |
2400 | state = ctx->state; | |
2401 | } | |
659bfcd6 | 2402 | } |
08e9eac4 | 2403 | |
659bfcd6 | 2404 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2405 | if (status == 0) |
2406 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2407 | return status; |
2408 | } | |
2409 | ||
7c513058 BS |
2410 | static int _nfs4_proc_lookupfh(struct rpc_clnt *clnt, struct nfs_server *server, |
2411 | const struct nfs_fh *dirfh, const struct qstr *name, | |
2412 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2b3de441 DH |
2413 | { |
2414 | int status; | |
2415 | struct nfs4_lookup_arg args = { | |
2416 | .bitmask = server->attr_bitmask, | |
2417 | .dir_fh = dirfh, | |
2418 | .name = name, | |
2419 | }; | |
2420 | struct nfs4_lookup_res res = { | |
2421 | .server = server, | |
2422 | .fattr = fattr, | |
2423 | .fh = fhandle, | |
2424 | }; | |
2425 | struct rpc_message msg = { | |
2426 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2427 | .rpc_argp = &args, | |
2428 | .rpc_resp = &res, | |
2429 | }; | |
2430 | ||
2431 | nfs_fattr_init(fattr); | |
2432 | ||
2433 | dprintk("NFS call lookupfh %s\n", name->name); | |
7c513058 | 2434 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
2b3de441 | 2435 | dprintk("NFS reply lookupfh: %d\n", status); |
2b3de441 DH |
2436 | return status; |
2437 | } | |
2438 | ||
2439 | static int nfs4_proc_lookupfh(struct nfs_server *server, struct nfs_fh *dirfh, | |
2440 | struct qstr *name, struct nfs_fh *fhandle, | |
2441 | struct nfs_fattr *fattr) | |
2442 | { | |
2443 | struct nfs4_exception exception = { }; | |
2444 | int err; | |
2445 | do { | |
7c513058 | 2446 | err = _nfs4_proc_lookupfh(server->client, server, dirfh, name, fhandle, fattr); |
4e56e082 TM |
2447 | /* FIXME: !!!! */ |
2448 | if (err == -NFS4ERR_MOVED) { | |
2449 | err = -EREMOTE; | |
2450 | break; | |
2451 | } | |
2452 | err = nfs4_handle_exception(server, err, &exception); | |
2b3de441 DH |
2453 | } while (exception.retry); |
2454 | return err; | |
2455 | } | |
2456 | ||
7c513058 BS |
2457 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
2458 | const struct qstr *name, struct nfs_fh *fhandle, | |
2459 | struct nfs_fattr *fattr) | |
1da177e4 | 2460 | { |
4e56e082 | 2461 | int status; |
1da177e4 LT |
2462 | |
2463 | dprintk("NFS call lookup %s\n", name->name); | |
7c513058 | 2464 | status = _nfs4_proc_lookupfh(clnt, NFS_SERVER(dir), NFS_FH(dir), name, fhandle, fattr); |
6b97fd3d MN |
2465 | if (status == -NFS4ERR_MOVED) |
2466 | status = nfs4_get_referral(dir, name, fattr, fhandle); | |
1da177e4 LT |
2467 | dprintk("NFS reply lookup: %d\n", status); |
2468 | return status; | |
2469 | } | |
2470 | ||
7ebb9315 BS |
2471 | void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr, struct nfs_fh *fh) |
2472 | { | |
2473 | memset(fh, 0, sizeof(struct nfs_fh)); | |
2474 | fattr->fsid.major = 1; | |
2475 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
2476 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_FSID | NFS_ATTR_FATTR_MOUNTPOINT; | |
2477 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; | |
2478 | fattr->nlink = 2; | |
2479 | } | |
2480 | ||
7c513058 BS |
2481 | static int nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, struct qstr *name, |
2482 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
1da177e4 LT |
2483 | { |
2484 | struct nfs4_exception exception = { }; | |
2485 | int err; | |
2486 | do { | |
2487 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
7c513058 | 2488 | _nfs4_proc_lookup(clnt, dir, name, fhandle, fattr), |
1da177e4 | 2489 | &exception); |
7ebb9315 BS |
2490 | if (err == -EPERM) |
2491 | nfs_fixup_secinfo_attributes(fattr, fhandle); | |
1da177e4 LT |
2492 | } while (exception.retry); |
2493 | return err; | |
2494 | } | |
2495 | ||
2496 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2497 | { | |
76b32999 | 2498 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2499 | struct nfs4_accessargs args = { |
2500 | .fh = NFS_FH(inode), | |
76b32999 TM |
2501 | .bitmask = server->attr_bitmask, |
2502 | }; | |
2503 | struct nfs4_accessres res = { | |
2504 | .server = server, | |
1da177e4 | 2505 | }; |
1da177e4 LT |
2506 | struct rpc_message msg = { |
2507 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2508 | .rpc_argp = &args, | |
2509 | .rpc_resp = &res, | |
2510 | .rpc_cred = entry->cred, | |
2511 | }; | |
2512 | int mode = entry->mask; | |
2513 | int status; | |
2514 | ||
2515 | /* | |
2516 | * Determine which access bits we want to ask for... | |
2517 | */ | |
2518 | if (mode & MAY_READ) | |
2519 | args.access |= NFS4_ACCESS_READ; | |
2520 | if (S_ISDIR(inode->i_mode)) { | |
2521 | if (mode & MAY_WRITE) | |
2522 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2523 | if (mode & MAY_EXEC) | |
2524 | args.access |= NFS4_ACCESS_LOOKUP; | |
2525 | } else { | |
2526 | if (mode & MAY_WRITE) | |
2527 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2528 | if (mode & MAY_EXEC) | |
2529 | args.access |= NFS4_ACCESS_EXECUTE; | |
2530 | } | |
c407d41a TM |
2531 | |
2532 | res.fattr = nfs_alloc_fattr(); | |
2533 | if (res.fattr == NULL) | |
2534 | return -ENOMEM; | |
2535 | ||
7c513058 | 2536 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2537 | if (!status) { |
2538 | entry->mask = 0; | |
2539 | if (res.access & NFS4_ACCESS_READ) | |
2540 | entry->mask |= MAY_READ; | |
2541 | if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE)) | |
2542 | entry->mask |= MAY_WRITE; | |
2543 | if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE)) | |
2544 | entry->mask |= MAY_EXEC; | |
c407d41a | 2545 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2546 | } |
c407d41a | 2547 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2548 | return status; |
2549 | } | |
2550 | ||
2551 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2552 | { | |
2553 | struct nfs4_exception exception = { }; | |
2554 | int err; | |
2555 | do { | |
2556 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2557 | _nfs4_proc_access(inode, entry), | |
2558 | &exception); | |
2559 | } while (exception.retry); | |
2560 | return err; | |
2561 | } | |
2562 | ||
2563 | /* | |
2564 | * TODO: For the time being, we don't try to get any attributes | |
2565 | * along with any of the zero-copy operations READ, READDIR, | |
2566 | * READLINK, WRITE. | |
2567 | * | |
2568 | * In the case of the first three, we want to put the GETATTR | |
2569 | * after the read-type operation -- this is because it is hard | |
2570 | * to predict the length of a GETATTR response in v4, and thus | |
2571 | * align the READ data correctly. This means that the GETATTR | |
2572 | * may end up partially falling into the page cache, and we should | |
2573 | * shift it into the 'tail' of the xdr_buf before processing. | |
2574 | * To do this efficiently, we need to know the total length | |
2575 | * of data received, which doesn't seem to be available outside | |
2576 | * of the RPC layer. | |
2577 | * | |
2578 | * In the case of WRITE, we also want to put the GETATTR after | |
2579 | * the operation -- in this case because we want to make sure | |
2580 | * we get the post-operation mtime and size. This means that | |
2581 | * we can't use xdr_encode_pages() as written: we need a variant | |
2582 | * of it which would leave room in the 'tail' iovec. | |
2583 | * | |
2584 | * Both of these changes to the XDR layer would in fact be quite | |
2585 | * minor, but I decided to leave them for a subsequent patch. | |
2586 | */ | |
2587 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2588 | unsigned int pgbase, unsigned int pglen) | |
2589 | { | |
2590 | struct nfs4_readlink args = { | |
2591 | .fh = NFS_FH(inode), | |
2592 | .pgbase = pgbase, | |
2593 | .pglen = pglen, | |
2594 | .pages = &page, | |
2595 | }; | |
f50c7000 | 2596 | struct nfs4_readlink_res res; |
1da177e4 LT |
2597 | struct rpc_message msg = { |
2598 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2599 | .rpc_argp = &args, | |
f50c7000 | 2600 | .rpc_resp = &res, |
1da177e4 LT |
2601 | }; |
2602 | ||
7c513058 | 2603 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2604 | } |
2605 | ||
2606 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2607 | unsigned int pgbase, unsigned int pglen) | |
2608 | { | |
2609 | struct nfs4_exception exception = { }; | |
2610 | int err; | |
2611 | do { | |
2612 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2613 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2614 | &exception); | |
2615 | } while (exception.retry); | |
2616 | return err; | |
2617 | } | |
2618 | ||
1da177e4 LT |
2619 | /* |
2620 | * Got race? | |
2621 | * We will need to arrange for the VFS layer to provide an atomic open. | |
2622 | * Until then, this create/open method is prone to inefficiency and race | |
2623 | * conditions due to the lookup, create, and open VFS calls from sys_open() | |
2624 | * placed on the wire. | |
2625 | * | |
2626 | * Given the above sorry state of affairs, I'm simply sending an OPEN. | |
2627 | * The file will be opened again in the subsequent VFS open call | |
2628 | * (nfs4_proc_file_open). | |
2629 | * | |
2630 | * The open for read will just hang around to be used by any process that | |
2631 | * opens the file O_RDONLY. This will all be resolved with the VFS changes. | |
2632 | */ | |
2633 | ||
2634 | static int | |
2635 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
c0204fd2 | 2636 | int flags, struct nfs_open_context *ctx) |
1da177e4 | 2637 | { |
82a2c1b7 | 2638 | struct dentry *de = dentry; |
1da177e4 | 2639 | struct nfs4_state *state; |
c0204fd2 TM |
2640 | struct rpc_cred *cred = NULL; |
2641 | fmode_t fmode = 0; | |
1da177e4 LT |
2642 | int status = 0; |
2643 | ||
c0204fd2 TM |
2644 | if (ctx != NULL) { |
2645 | cred = ctx->cred; | |
3d4ff43d | 2646 | de = ctx->dentry; |
c0204fd2 | 2647 | fmode = ctx->mode; |
1da177e4 | 2648 | } |
a8a5da99 | 2649 | sattr->ia_mode &= ~current_umask(); |
82a2c1b7 | 2650 | state = nfs4_do_open(dir, de, fmode, flags, sattr, cred); |
d4d9cdcb | 2651 | d_drop(dentry); |
1da177e4 LT |
2652 | if (IS_ERR(state)) { |
2653 | status = PTR_ERR(state); | |
c0204fd2 | 2654 | goto out; |
1da177e4 | 2655 | } |
d4d9cdcb | 2656 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2657 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
c0204fd2 TM |
2658 | if (ctx != NULL) |
2659 | ctx->state = state; | |
02a913a7 | 2660 | else |
643168c2 | 2661 | nfs4_close_sync(state, fmode); |
1da177e4 LT |
2662 | out: |
2663 | return status; | |
2664 | } | |
2665 | ||
2666 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2667 | { | |
16e42959 | 2668 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2669 | struct nfs_removeargs args = { |
1da177e4 | 2670 | .fh = NFS_FH(dir), |
4fdc17b2 TM |
2671 | .name.len = name->len, |
2672 | .name.name = name->name, | |
16e42959 TM |
2673 | .bitmask = server->attr_bitmask, |
2674 | }; | |
4fdc17b2 | 2675 | struct nfs_removeres res = { |
16e42959 | 2676 | .server = server, |
1da177e4 | 2677 | }; |
1da177e4 | 2678 | struct rpc_message msg = { |
4fdc17b2 TM |
2679 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
2680 | .rpc_argp = &args, | |
2681 | .rpc_resp = &res, | |
1da177e4 | 2682 | }; |
d346890b TM |
2683 | int status = -ENOMEM; |
2684 | ||
2685 | res.dir_attr = nfs_alloc_fattr(); | |
2686 | if (res.dir_attr == NULL) | |
2687 | goto out; | |
1da177e4 | 2688 | |
7c513058 | 2689 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
16e42959 TM |
2690 | if (status == 0) { |
2691 | update_changeattr(dir, &res.cinfo); | |
d346890b | 2692 | nfs_post_op_update_inode(dir, res.dir_attr); |
16e42959 | 2693 | } |
d346890b TM |
2694 | nfs_free_fattr(res.dir_attr); |
2695 | out: | |
1da177e4 LT |
2696 | return status; |
2697 | } | |
2698 | ||
2699 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2700 | { | |
2701 | struct nfs4_exception exception = { }; | |
2702 | int err; | |
2703 | do { | |
2704 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2705 | _nfs4_proc_remove(dir, name), | |
2706 | &exception); | |
2707 | } while (exception.retry); | |
2708 | return err; | |
2709 | } | |
2710 | ||
e4eff1a6 | 2711 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 2712 | { |
e4eff1a6 TM |
2713 | struct nfs_server *server = NFS_SERVER(dir); |
2714 | struct nfs_removeargs *args = msg->rpc_argp; | |
2715 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 2716 | |
a65318bf | 2717 | args->bitmask = server->cache_consistency_bitmask; |
e4eff1a6 | 2718 | res->server = server; |
dfb4f309 | 2719 | res->seq_res.sr_slot = NULL; |
1da177e4 | 2720 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
1da177e4 LT |
2721 | } |
2722 | ||
e4eff1a6 | 2723 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 2724 | { |
e4eff1a6 TM |
2725 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
2726 | ||
14516c3a TM |
2727 | if (!nfs4_sequence_done(task, &res->seq_res)) |
2728 | return 0; | |
9e33bed5 | 2729 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
2730 | return 0; |
2731 | update_changeattr(dir, &res->cinfo); | |
d346890b | 2732 | nfs_post_op_update_inode(dir, res->dir_attr); |
e4eff1a6 | 2733 | return 1; |
1da177e4 LT |
2734 | } |
2735 | ||
d3d4152a JL |
2736 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
2737 | { | |
2738 | struct nfs_server *server = NFS_SERVER(dir); | |
2739 | struct nfs_renameargs *arg = msg->rpc_argp; | |
2740 | struct nfs_renameres *res = msg->rpc_resp; | |
2741 | ||
2742 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
2743 | arg->bitmask = server->attr_bitmask; | |
2744 | res->server = server; | |
2745 | } | |
2746 | ||
2747 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
2748 | struct inode *new_dir) | |
2749 | { | |
2750 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
2751 | ||
2752 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
2753 | return 0; | |
2754 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
2755 | return 0; | |
2756 | ||
2757 | update_changeattr(old_dir, &res->old_cinfo); | |
2758 | nfs_post_op_update_inode(old_dir, res->old_fattr); | |
2759 | update_changeattr(new_dir, &res->new_cinfo); | |
2760 | nfs_post_op_update_inode(new_dir, res->new_fattr); | |
2761 | return 1; | |
2762 | } | |
2763 | ||
1da177e4 LT |
2764 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
2765 | struct inode *new_dir, struct qstr *new_name) | |
2766 | { | |
6caf2c82 | 2767 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 2768 | struct nfs_renameargs arg = { |
1da177e4 LT |
2769 | .old_dir = NFS_FH(old_dir), |
2770 | .new_dir = NFS_FH(new_dir), | |
2771 | .old_name = old_name, | |
2772 | .new_name = new_name, | |
6caf2c82 TM |
2773 | .bitmask = server->attr_bitmask, |
2774 | }; | |
e8582a8b | 2775 | struct nfs_renameres res = { |
6caf2c82 | 2776 | .server = server, |
1da177e4 | 2777 | }; |
1da177e4 LT |
2778 | struct rpc_message msg = { |
2779 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
2780 | .rpc_argp = &arg, | |
2781 | .rpc_resp = &res, | |
2782 | }; | |
011fff72 | 2783 | int status = -ENOMEM; |
1da177e4 | 2784 | |
011fff72 TM |
2785 | res.old_fattr = nfs_alloc_fattr(); |
2786 | res.new_fattr = nfs_alloc_fattr(); | |
2787 | if (res.old_fattr == NULL || res.new_fattr == NULL) | |
2788 | goto out; | |
1da177e4 | 2789 | |
7c513058 | 2790 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
2791 | if (!status) { |
2792 | update_changeattr(old_dir, &res.old_cinfo); | |
6caf2c82 | 2793 | nfs_post_op_update_inode(old_dir, res.old_fattr); |
1da177e4 | 2794 | update_changeattr(new_dir, &res.new_cinfo); |
6caf2c82 | 2795 | nfs_post_op_update_inode(new_dir, res.new_fattr); |
1da177e4 | 2796 | } |
011fff72 TM |
2797 | out: |
2798 | nfs_free_fattr(res.new_fattr); | |
2799 | nfs_free_fattr(res.old_fattr); | |
1da177e4 LT |
2800 | return status; |
2801 | } | |
2802 | ||
2803 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2804 | struct inode *new_dir, struct qstr *new_name) | |
2805 | { | |
2806 | struct nfs4_exception exception = { }; | |
2807 | int err; | |
2808 | do { | |
2809 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
2810 | _nfs4_proc_rename(old_dir, old_name, | |
2811 | new_dir, new_name), | |
2812 | &exception); | |
2813 | } while (exception.retry); | |
2814 | return err; | |
2815 | } | |
2816 | ||
2817 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2818 | { | |
91ba2eee | 2819 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2820 | struct nfs4_link_arg arg = { |
2821 | .fh = NFS_FH(inode), | |
2822 | .dir_fh = NFS_FH(dir), | |
2823 | .name = name, | |
91ba2eee TM |
2824 | .bitmask = server->attr_bitmask, |
2825 | }; | |
91ba2eee TM |
2826 | struct nfs4_link_res res = { |
2827 | .server = server, | |
1da177e4 | 2828 | }; |
1da177e4 LT |
2829 | struct rpc_message msg = { |
2830 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
2831 | .rpc_argp = &arg, | |
91ba2eee | 2832 | .rpc_resp = &res, |
1da177e4 | 2833 | }; |
136f2627 TM |
2834 | int status = -ENOMEM; |
2835 | ||
2836 | res.fattr = nfs_alloc_fattr(); | |
2837 | res.dir_attr = nfs_alloc_fattr(); | |
2838 | if (res.fattr == NULL || res.dir_attr == NULL) | |
2839 | goto out; | |
1da177e4 | 2840 | |
7c513058 | 2841 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
2842 | if (!status) { |
2843 | update_changeattr(dir, &res.cinfo); | |
2844 | nfs_post_op_update_inode(dir, res.dir_attr); | |
73a3d07c | 2845 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 2846 | } |
136f2627 TM |
2847 | out: |
2848 | nfs_free_fattr(res.dir_attr); | |
2849 | nfs_free_fattr(res.fattr); | |
1da177e4 LT |
2850 | return status; |
2851 | } | |
2852 | ||
2853 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2854 | { | |
2855 | struct nfs4_exception exception = { }; | |
2856 | int err; | |
2857 | do { | |
2858 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2859 | _nfs4_proc_link(inode, dir, name), | |
2860 | &exception); | |
2861 | } while (exception.retry); | |
2862 | return err; | |
2863 | } | |
2864 | ||
57dc9a57 TM |
2865 | struct nfs4_createdata { |
2866 | struct rpc_message msg; | |
2867 | struct nfs4_create_arg arg; | |
2868 | struct nfs4_create_res res; | |
2869 | struct nfs_fh fh; | |
2870 | struct nfs_fattr fattr; | |
2871 | struct nfs_fattr dir_fattr; | |
2872 | }; | |
2873 | ||
2874 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
2875 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
2876 | { | |
2877 | struct nfs4_createdata *data; | |
2878 | ||
2879 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
2880 | if (data != NULL) { | |
2881 | struct nfs_server *server = NFS_SERVER(dir); | |
2882 | ||
2883 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
2884 | data->msg.rpc_argp = &data->arg; | |
2885 | data->msg.rpc_resp = &data->res; | |
2886 | data->arg.dir_fh = NFS_FH(dir); | |
2887 | data->arg.server = server; | |
2888 | data->arg.name = name; | |
2889 | data->arg.attrs = sattr; | |
2890 | data->arg.ftype = ftype; | |
2891 | data->arg.bitmask = server->attr_bitmask; | |
2892 | data->res.server = server; | |
2893 | data->res.fh = &data->fh; | |
2894 | data->res.fattr = &data->fattr; | |
2895 | data->res.dir_fattr = &data->dir_fattr; | |
2896 | nfs_fattr_init(data->res.fattr); | |
2897 | nfs_fattr_init(data->res.dir_fattr); | |
2898 | } | |
2899 | return data; | |
2900 | } | |
2901 | ||
2902 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
2903 | { | |
7c513058 | 2904 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 2905 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
2906 | if (status == 0) { |
2907 | update_changeattr(dir, &data->res.dir_cinfo); | |
2908 | nfs_post_op_update_inode(dir, data->res.dir_fattr); | |
2909 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); | |
2910 | } | |
2911 | return status; | |
2912 | } | |
2913 | ||
2914 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
2915 | { | |
2916 | kfree(data); | |
2917 | } | |
2918 | ||
4f390c15 | 2919 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2920 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 2921 | { |
57dc9a57 TM |
2922 | struct nfs4_createdata *data; |
2923 | int status = -ENAMETOOLONG; | |
1da177e4 | 2924 | |
94a6d753 | 2925 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 2926 | goto out; |
4f390c15 | 2927 | |
57dc9a57 TM |
2928 | status = -ENOMEM; |
2929 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
2930 | if (data == NULL) | |
2931 | goto out; | |
2932 | ||
2933 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
2934 | data->arg.u.symlink.pages = &page; | |
2935 | data->arg.u.symlink.len = len; | |
1da177e4 | 2936 | |
57dc9a57 TM |
2937 | status = nfs4_do_create(dir, dentry, data); |
2938 | ||
2939 | nfs4_free_createdata(data); | |
2940 | out: | |
1da177e4 LT |
2941 | return status; |
2942 | } | |
2943 | ||
4f390c15 | 2944 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2945 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
2946 | { |
2947 | struct nfs4_exception exception = { }; | |
2948 | int err; | |
2949 | do { | |
2950 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
2951 | _nfs4_proc_symlink(dir, dentry, page, |
2952 | len, sattr), | |
1da177e4 LT |
2953 | &exception); |
2954 | } while (exception.retry); | |
2955 | return err; | |
2956 | } | |
2957 | ||
2958 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2959 | struct iattr *sattr) | |
2960 | { | |
57dc9a57 TM |
2961 | struct nfs4_createdata *data; |
2962 | int status = -ENOMEM; | |
1da177e4 | 2963 | |
57dc9a57 TM |
2964 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
2965 | if (data == NULL) | |
2966 | goto out; | |
2967 | ||
2968 | status = nfs4_do_create(dir, dentry, data); | |
2969 | ||
2970 | nfs4_free_createdata(data); | |
2971 | out: | |
1da177e4 LT |
2972 | return status; |
2973 | } | |
2974 | ||
2975 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2976 | struct iattr *sattr) | |
2977 | { | |
2978 | struct nfs4_exception exception = { }; | |
2979 | int err; | |
a8a5da99 AK |
2980 | |
2981 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
2982 | do { |
2983 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2984 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
2985 | &exception); | |
2986 | } while (exception.retry); | |
2987 | return err; | |
2988 | } | |
2989 | ||
2990 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 2991 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
2992 | { |
2993 | struct inode *dir = dentry->d_inode; | |
2994 | struct nfs4_readdir_arg args = { | |
2995 | .fh = NFS_FH(dir), | |
56e4ebf8 | 2996 | .pages = pages, |
1da177e4 LT |
2997 | .pgbase = 0, |
2998 | .count = count, | |
96d25e53 | 2999 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3000 | .plus = plus, |
1da177e4 LT |
3001 | }; |
3002 | struct nfs4_readdir_res res; | |
3003 | struct rpc_message msg = { | |
3004 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3005 | .rpc_argp = &args, | |
3006 | .rpc_resp = &res, | |
3007 | .rpc_cred = cred, | |
3008 | }; | |
3009 | int status; | |
3010 | ||
3110ff80 | 3011 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
3012 | dentry->d_parent->d_name.name, |
3013 | dentry->d_name.name, | |
3014 | (unsigned long long)cookie); | |
1da177e4 LT |
3015 | nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args); |
3016 | res.pgbase = args.pgbase; | |
7c513058 | 3017 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3018 | if (status >= 0) { |
1da177e4 | 3019 | memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3020 | status += args.pgbase; |
3021 | } | |
c4812998 TM |
3022 | |
3023 | nfs_invalidate_atime(dir); | |
3024 | ||
3110ff80 | 3025 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3026 | return status; |
3027 | } | |
3028 | ||
3029 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3030 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3031 | { |
3032 | struct nfs4_exception exception = { }; | |
3033 | int err; | |
3034 | do { | |
3035 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
3036 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 3037 | pages, count, plus), |
1da177e4 LT |
3038 | &exception); |
3039 | } while (exception.retry); | |
3040 | return err; | |
3041 | } | |
3042 | ||
3043 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3044 | struct iattr *sattr, dev_t rdev) | |
3045 | { | |
57dc9a57 TM |
3046 | struct nfs4_createdata *data; |
3047 | int mode = sattr->ia_mode; | |
3048 | int status = -ENOMEM; | |
1da177e4 LT |
3049 | |
3050 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
3051 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
57dc9a57 TM |
3052 | |
3053 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); | |
3054 | if (data == NULL) | |
3055 | goto out; | |
3056 | ||
1da177e4 | 3057 | if (S_ISFIFO(mode)) |
57dc9a57 | 3058 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3059 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3060 | data->arg.ftype = NF4BLK; |
3061 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3062 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3063 | } |
3064 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3065 | data->arg.ftype = NF4CHR; |
3066 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3067 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 | 3068 | } |
1da177e4 | 3069 | |
57dc9a57 TM |
3070 | status = nfs4_do_create(dir, dentry, data); |
3071 | ||
3072 | nfs4_free_createdata(data); | |
3073 | out: | |
1da177e4 LT |
3074 | return status; |
3075 | } | |
3076 | ||
3077 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3078 | struct iattr *sattr, dev_t rdev) | |
3079 | { | |
3080 | struct nfs4_exception exception = { }; | |
3081 | int err; | |
a8a5da99 AK |
3082 | |
3083 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3084 | do { |
3085 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3086 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
3087 | &exception); | |
3088 | } while (exception.retry); | |
3089 | return err; | |
3090 | } | |
3091 | ||
3092 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3093 | struct nfs_fsstat *fsstat) | |
3094 | { | |
3095 | struct nfs4_statfs_arg args = { | |
3096 | .fh = fhandle, | |
3097 | .bitmask = server->attr_bitmask, | |
3098 | }; | |
24ad148a BH |
3099 | struct nfs4_statfs_res res = { |
3100 | .fsstat = fsstat, | |
3101 | }; | |
1da177e4 LT |
3102 | struct rpc_message msg = { |
3103 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3104 | .rpc_argp = &args, | |
24ad148a | 3105 | .rpc_resp = &res, |
1da177e4 LT |
3106 | }; |
3107 | ||
0e574af1 | 3108 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3109 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3110 | } |
3111 | ||
3112 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3113 | { | |
3114 | struct nfs4_exception exception = { }; | |
3115 | int err; | |
3116 | do { | |
3117 | err = nfs4_handle_exception(server, | |
3118 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3119 | &exception); | |
3120 | } while (exception.retry); | |
3121 | return err; | |
3122 | } | |
3123 | ||
3124 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3125 | struct nfs_fsinfo *fsinfo) | |
3126 | { | |
3127 | struct nfs4_fsinfo_arg args = { | |
3128 | .fh = fhandle, | |
3129 | .bitmask = server->attr_bitmask, | |
3130 | }; | |
3dda5e43 BH |
3131 | struct nfs4_fsinfo_res res = { |
3132 | .fsinfo = fsinfo, | |
3133 | }; | |
1da177e4 LT |
3134 | struct rpc_message msg = { |
3135 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3136 | .rpc_argp = &args, | |
3dda5e43 | 3137 | .rpc_resp = &res, |
1da177e4 LT |
3138 | }; |
3139 | ||
7c513058 | 3140 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3141 | } |
3142 | ||
3143 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3144 | { | |
3145 | struct nfs4_exception exception = { }; | |
3146 | int err; | |
3147 | ||
3148 | do { | |
3149 | err = nfs4_handle_exception(server, | |
3150 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
3151 | &exception); | |
3152 | } while (exception.retry); | |
3153 | return err; | |
3154 | } | |
3155 | ||
3156 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3157 | { | |
0e574af1 | 3158 | nfs_fattr_init(fsinfo->fattr); |
1da177e4 LT |
3159 | return nfs4_do_fsinfo(server, fhandle, fsinfo); |
3160 | } | |
3161 | ||
3162 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3163 | struct nfs_pathconf *pathconf) | |
3164 | { | |
3165 | struct nfs4_pathconf_arg args = { | |
3166 | .fh = fhandle, | |
3167 | .bitmask = server->attr_bitmask, | |
3168 | }; | |
d45b2989 BH |
3169 | struct nfs4_pathconf_res res = { |
3170 | .pathconf = pathconf, | |
3171 | }; | |
1da177e4 LT |
3172 | struct rpc_message msg = { |
3173 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3174 | .rpc_argp = &args, | |
d45b2989 | 3175 | .rpc_resp = &res, |
1da177e4 LT |
3176 | }; |
3177 | ||
3178 | /* None of the pathconf attributes are mandatory to implement */ | |
3179 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3180 | memset(pathconf, 0, sizeof(*pathconf)); | |
3181 | return 0; | |
3182 | } | |
3183 | ||
0e574af1 | 3184 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3185 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3186 | } |
3187 | ||
3188 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3189 | struct nfs_pathconf *pathconf) | |
3190 | { | |
3191 | struct nfs4_exception exception = { }; | |
3192 | int err; | |
3193 | ||
3194 | do { | |
3195 | err = nfs4_handle_exception(server, | |
3196 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3197 | &exception); | |
3198 | } while (exception.retry); | |
3199 | return err; | |
3200 | } | |
3201 | ||
d20581aa BH |
3202 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3203 | { | |
3204 | nfs_invalidate_atime(data->inode); | |
3205 | } | |
3206 | ||
cbdabc7f | 3207 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3208 | { |
ec06c096 | 3209 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 3210 | |
9e33bed5 | 3211 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
0110ee15 | 3212 | nfs_restart_rpc(task, server->nfs_client); |
ec06c096 | 3213 | return -EAGAIN; |
1da177e4 | 3214 | } |
8850df99 | 3215 | |
d20581aa | 3216 | __nfs4_read_done_cb(data); |
1da177e4 | 3217 | if (task->tk_status > 0) |
ec06c096 TM |
3218 | renew_lease(server, data->timestamp); |
3219 | return 0; | |
1da177e4 LT |
3220 | } |
3221 | ||
cbdabc7f AA |
3222 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3223 | { | |
3224 | ||
3225 | dprintk("--> %s\n", __func__); | |
3226 | ||
3227 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3228 | return -EAGAIN; | |
3229 | ||
d20581aa BH |
3230 | return data->read_done_cb ? data->read_done_cb(task, data) : |
3231 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
3232 | } |
3233 | ||
bdc7f021 | 3234 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3235 | { |
1da177e4 | 3236 | data->timestamp = jiffies; |
cbdabc7f | 3237 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3238 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
1da177e4 LT |
3239 | } |
3240 | ||
cbdabc7f AA |
3241 | /* Reset the the nfs_read_data to send the read to the MDS. */ |
3242 | void nfs4_reset_read(struct rpc_task *task, struct nfs_read_data *data) | |
3243 | { | |
3244 | dprintk("%s Reset task for i/o through\n", __func__); | |
3245 | put_lseg(data->lseg); | |
3246 | data->lseg = NULL; | |
3247 | /* offsets will differ in the dense stripe case */ | |
3248 | data->args.offset = data->mds_offset; | |
3249 | data->ds_clp = NULL; | |
3250 | data->args.fh = NFS_FH(data->inode); | |
3251 | data->read_done_cb = nfs4_read_done_cb; | |
3252 | task->tk_ops = data->mds_ops; | |
3253 | rpc_task_reset_client(task, NFS_CLIENT(data->inode)); | |
3254 | } | |
3255 | EXPORT_SYMBOL_GPL(nfs4_reset_read); | |
3256 | ||
b029bc9b | 3257 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3258 | { |
1da177e4 LT |
3259 | struct inode *inode = data->inode; |
3260 | ||
9e33bed5 | 3261 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
0110ee15 | 3262 | nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client); |
788e7a89 | 3263 | return -EAGAIN; |
1da177e4 | 3264 | } |
4f9838c7 | 3265 | if (task->tk_status >= 0) { |
1da177e4 | 3266 | renew_lease(NFS_SERVER(inode), data->timestamp); |
70ca8852 | 3267 | nfs_post_op_update_inode_force_wcc(inode, data->res.fattr); |
4f9838c7 | 3268 | } |
788e7a89 | 3269 | return 0; |
1da177e4 LT |
3270 | } |
3271 | ||
b029bc9b FI |
3272 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3273 | { | |
3274 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3275 | return -EAGAIN; | |
d20581aa BH |
3276 | return data->write_done_cb ? data->write_done_cb(task, data) : |
3277 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
3278 | } |
3279 | ||
a69aef14 FI |
3280 | /* Reset the the nfs_write_data to send the write to the MDS. */ |
3281 | void nfs4_reset_write(struct rpc_task *task, struct nfs_write_data *data) | |
3282 | { | |
3283 | dprintk("%s Reset task for i/o through\n", __func__); | |
3284 | put_lseg(data->lseg); | |
3285 | data->lseg = NULL; | |
3286 | data->ds_clp = NULL; | |
3287 | data->write_done_cb = nfs4_write_done_cb; | |
3288 | data->args.fh = NFS_FH(data->inode); | |
3289 | data->args.bitmask = data->res.server->cache_consistency_bitmask; | |
3290 | data->args.offset = data->mds_offset; | |
3291 | data->res.fattr = &data->fattr; | |
3292 | task->tk_ops = data->mds_ops; | |
3293 | rpc_task_reset_client(task, NFS_CLIENT(data->inode)); | |
3294 | } | |
3295 | EXPORT_SYMBOL_GPL(nfs4_reset_write); | |
3296 | ||
bdc7f021 | 3297 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3298 | { |
bdc7f021 TM |
3299 | struct nfs_server *server = NFS_SERVER(data->inode); |
3300 | ||
7ffd1064 FI |
3301 | if (data->lseg) { |
3302 | data->args.bitmask = NULL; | |
3303 | data->res.fattr = NULL; | |
3304 | } else | |
3305 | data->args.bitmask = server->cache_consistency_bitmask; | |
b029bc9b FI |
3306 | if (!data->write_done_cb) |
3307 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3308 | data->res.server = server; |
1da177e4 LT |
3309 | data->timestamp = jiffies; |
3310 | ||
bdc7f021 | 3311 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
1da177e4 LT |
3312 | } |
3313 | ||
5f452431 | 3314 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3315 | { |
1da177e4 | 3316 | struct inode *inode = data->inode; |
14516c3a | 3317 | |
9e33bed5 | 3318 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
0110ee15 | 3319 | nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client); |
788e7a89 | 3320 | return -EAGAIN; |
1da177e4 | 3321 | } |
9e08a3c5 | 3322 | nfs_refresh_inode(inode, data->res.fattr); |
788e7a89 | 3323 | return 0; |
1da177e4 LT |
3324 | } |
3325 | ||
5f452431 FI |
3326 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data) |
3327 | { | |
3328 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3329 | return -EAGAIN; | |
3330 | return data->write_done_cb(task, data); | |
3331 | } | |
3332 | ||
bdc7f021 | 3333 | static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3334 | { |
788e7a89 | 3335 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce FI |
3336 | |
3337 | if (data->lseg) { | |
3338 | data->args.bitmask = NULL; | |
3339 | data->res.fattr = NULL; | |
3340 | } else | |
3341 | data->args.bitmask = server->cache_consistency_bitmask; | |
5f452431 FI |
3342 | if (!data->write_done_cb) |
3343 | data->write_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 3344 | data->res.server = server; |
bdc7f021 | 3345 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
1da177e4 LT |
3346 | } |
3347 | ||
9bc4e3ca CL |
3348 | struct nfs4_renewdata { |
3349 | struct nfs_client *client; | |
3350 | unsigned long timestamp; | |
3351 | }; | |
3352 | ||
1da177e4 LT |
3353 | /* |
3354 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3355 | * standalone procedure for queueing an asynchronous RENEW. | |
3356 | */ | |
9bc4e3ca | 3357 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3358 | { |
9bc4e3ca CL |
3359 | struct nfs4_renewdata *data = calldata; |
3360 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3361 | |
0851de06 AB |
3362 | if (atomic_read(&clp->cl_count) > 1) |
3363 | nfs4_schedule_state_renewal(clp); | |
3364 | nfs_put_client(clp); | |
9bc4e3ca | 3365 | kfree(data); |
dc96aef9 AB |
3366 | } |
3367 | ||
9bc4e3ca | 3368 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3369 | { |
9bc4e3ca CL |
3370 | struct nfs4_renewdata *data = calldata; |
3371 | struct nfs_client *clp = data->client; | |
3372 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3373 | |
3374 | if (task->tk_status < 0) { | |
95baa25c TM |
3375 | /* Unless we're shutting down, schedule state recovery! */ |
3376 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) != 0) | |
0400a6b0 | 3377 | nfs4_schedule_lease_recovery(clp); |
1da177e4 LT |
3378 | return; |
3379 | } | |
452e9352 | 3380 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3381 | } |
3382 | ||
963d8fe5 TM |
3383 | static const struct rpc_call_ops nfs4_renew_ops = { |
3384 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3385 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3386 | }; |
3387 | ||
adfa6f98 | 3388 | int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3389 | { |
3390 | struct rpc_message msg = { | |
3391 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3392 | .rpc_argp = clp, | |
b4454fe1 | 3393 | .rpc_cred = cred, |
1da177e4 | 3394 | }; |
9bc4e3ca | 3395 | struct nfs4_renewdata *data; |
1da177e4 | 3396 | |
0851de06 AB |
3397 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3398 | return -EIO; | |
9bc4e3ca CL |
3399 | data = kmalloc(sizeof(*data), GFP_KERNEL); |
3400 | if (data == NULL) | |
3401 | return -ENOMEM; | |
3402 | data->client = clp; | |
3403 | data->timestamp = jiffies; | |
1da177e4 | 3404 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, |
9bc4e3ca | 3405 | &nfs4_renew_ops, data); |
1da177e4 LT |
3406 | } |
3407 | ||
adfa6f98 | 3408 | int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3409 | { |
3410 | struct rpc_message msg = { | |
3411 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3412 | .rpc_argp = clp, | |
b4454fe1 | 3413 | .rpc_cred = cred, |
1da177e4 LT |
3414 | }; |
3415 | unsigned long now = jiffies; | |
3416 | int status; | |
3417 | ||
3418 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3419 | if (status < 0) | |
3420 | return status; | |
452e9352 | 3421 | do_renew_lease(clp, now); |
1da177e4 LT |
3422 | return 0; |
3423 | } | |
3424 | ||
aa1870af BF |
3425 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3426 | { | |
3427 | return (server->caps & NFS_CAP_ACLS) | |
3428 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3429 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3430 | } | |
3431 | ||
3432 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that | |
3433 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on | |
3434 | * the stack. | |
3435 | */ | |
3436 | #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT) | |
3437 | ||
3438 | static void buf_to_pages(const void *buf, size_t buflen, | |
3439 | struct page **pages, unsigned int *pgbase) | |
3440 | { | |
3441 | const void *p = buf; | |
3442 | ||
3443 | *pgbase = offset_in_page(buf); | |
3444 | p -= *pgbase; | |
3445 | while (p < buf + buflen) { | |
3446 | *(pages++) = virt_to_page(p); | |
3447 | p += PAGE_CACHE_SIZE; | |
3448 | } | |
3449 | } | |
3450 | ||
e9e3d724 NH |
3451 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
3452 | struct page **pages, unsigned int *pgbase) | |
3453 | { | |
3454 | struct page *newpage, **spages; | |
3455 | int rc = 0; | |
3456 | size_t len; | |
3457 | spages = pages; | |
3458 | ||
3459 | do { | |
43b7c3f0 | 3460 | len = min_t(size_t, PAGE_CACHE_SIZE, buflen); |
e9e3d724 NH |
3461 | newpage = alloc_page(GFP_KERNEL); |
3462 | ||
3463 | if (newpage == NULL) | |
3464 | goto unwind; | |
3465 | memcpy(page_address(newpage), buf, len); | |
3466 | buf += len; | |
3467 | buflen -= len; | |
3468 | *pages++ = newpage; | |
3469 | rc++; | |
3470 | } while (buflen != 0); | |
3471 | ||
3472 | return rc; | |
3473 | ||
3474 | unwind: | |
3475 | for(; rc > 0; rc--) | |
3476 | __free_page(spages[rc-1]); | |
3477 | return -ENOMEM; | |
3478 | } | |
3479 | ||
e50a1c2e BF |
3480 | struct nfs4_cached_acl { |
3481 | int cached; | |
3482 | size_t len; | |
3e9d4154 | 3483 | char data[0]; |
e50a1c2e BF |
3484 | }; |
3485 | ||
3486 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3487 | { | |
3488 | struct nfs_inode *nfsi = NFS_I(inode); | |
3489 | ||
3490 | spin_lock(&inode->i_lock); | |
3491 | kfree(nfsi->nfs4_acl); | |
3492 | nfsi->nfs4_acl = acl; | |
3493 | spin_unlock(&inode->i_lock); | |
3494 | } | |
3495 | ||
3496 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3497 | { | |
3498 | nfs4_set_cached_acl(inode, NULL); | |
3499 | } | |
3500 | ||
3501 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3502 | { | |
3503 | struct nfs_inode *nfsi = NFS_I(inode); | |
3504 | struct nfs4_cached_acl *acl; | |
3505 | int ret = -ENOENT; | |
3506 | ||
3507 | spin_lock(&inode->i_lock); | |
3508 | acl = nfsi->nfs4_acl; | |
3509 | if (acl == NULL) | |
3510 | goto out; | |
3511 | if (buf == NULL) /* user is just asking for length */ | |
3512 | goto out_len; | |
3513 | if (acl->cached == 0) | |
3514 | goto out; | |
3515 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3516 | if (acl->len > buflen) | |
3517 | goto out; | |
3518 | memcpy(buf, acl->data, acl->len); | |
3519 | out_len: | |
3520 | ret = acl->len; | |
3521 | out: | |
3522 | spin_unlock(&inode->i_lock); | |
3523 | return ret; | |
3524 | } | |
3525 | ||
3526 | static void nfs4_write_cached_acl(struct inode *inode, const char *buf, size_t acl_len) | |
3527 | { | |
3528 | struct nfs4_cached_acl *acl; | |
3529 | ||
3530 | if (buf && acl_len <= PAGE_SIZE) { | |
3531 | acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL); | |
3532 | if (acl == NULL) | |
3533 | goto out; | |
3534 | acl->cached = 1; | |
3535 | memcpy(acl->data, buf, acl_len); | |
3536 | } else { | |
3537 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3538 | if (acl == NULL) | |
3539 | goto out; | |
3540 | acl->cached = 0; | |
3541 | } | |
3542 | acl->len = acl_len; | |
3543 | out: | |
3544 | nfs4_set_cached_acl(inode, acl); | |
3545 | } | |
3546 | ||
16b4289c | 3547 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3548 | { |
aa1870af BF |
3549 | struct page *pages[NFS4ACL_MAXPAGES]; |
3550 | struct nfs_getaclargs args = { | |
3551 | .fh = NFS_FH(inode), | |
3552 | .acl_pages = pages, | |
3553 | .acl_len = buflen, | |
3554 | }; | |
663c79b3 BH |
3555 | struct nfs_getaclres res = { |
3556 | .acl_len = buflen, | |
3557 | }; | |
e50a1c2e | 3558 | void *resp_buf; |
aa1870af BF |
3559 | struct rpc_message msg = { |
3560 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3561 | .rpc_argp = &args, | |
663c79b3 | 3562 | .rpc_resp = &res, |
aa1870af | 3563 | }; |
e50a1c2e | 3564 | struct page *localpage = NULL; |
aa1870af BF |
3565 | int ret; |
3566 | ||
e50a1c2e BF |
3567 | if (buflen < PAGE_SIZE) { |
3568 | /* As long as we're doing a round trip to the server anyway, | |
3569 | * let's be prepared for a page of acl data. */ | |
3570 | localpage = alloc_page(GFP_KERNEL); | |
3571 | resp_buf = page_address(localpage); | |
3572 | if (localpage == NULL) | |
3573 | return -ENOMEM; | |
3574 | args.acl_pages[0] = localpage; | |
3575 | args.acl_pgbase = 0; | |
663c79b3 | 3576 | args.acl_len = PAGE_SIZE; |
e50a1c2e BF |
3577 | } else { |
3578 | resp_buf = buf; | |
3579 | buf_to_pages(buf, buflen, args.acl_pages, &args.acl_pgbase); | |
3580 | } | |
7c513058 | 3581 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
e50a1c2e BF |
3582 | if (ret) |
3583 | goto out_free; | |
663c79b3 BH |
3584 | if (res.acl_len > args.acl_len) |
3585 | nfs4_write_cached_acl(inode, NULL, res.acl_len); | |
e50a1c2e | 3586 | else |
663c79b3 | 3587 | nfs4_write_cached_acl(inode, resp_buf, res.acl_len); |
e50a1c2e BF |
3588 | if (buf) { |
3589 | ret = -ERANGE; | |
663c79b3 | 3590 | if (res.acl_len > buflen) |
e50a1c2e BF |
3591 | goto out_free; |
3592 | if (localpage) | |
663c79b3 | 3593 | memcpy(buf, resp_buf, res.acl_len); |
e50a1c2e | 3594 | } |
663c79b3 | 3595 | ret = res.acl_len; |
e50a1c2e BF |
3596 | out_free: |
3597 | if (localpage) | |
3598 | __free_page(localpage); | |
aa1870af BF |
3599 | return ret; |
3600 | } | |
3601 | ||
16b4289c TM |
3602 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
3603 | { | |
3604 | struct nfs4_exception exception = { }; | |
3605 | ssize_t ret; | |
3606 | do { | |
3607 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
3608 | if (ret >= 0) | |
3609 | break; | |
3610 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
3611 | } while (exception.retry); | |
3612 | return ret; | |
3613 | } | |
3614 | ||
e50a1c2e BF |
3615 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
3616 | { | |
3617 | struct nfs_server *server = NFS_SERVER(inode); | |
3618 | int ret; | |
3619 | ||
3620 | if (!nfs4_server_supports_acls(server)) | |
3621 | return -EOPNOTSUPP; | |
3622 | ret = nfs_revalidate_inode(server, inode); | |
3623 | if (ret < 0) | |
3624 | return ret; | |
08a22b39 AK |
3625 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
3626 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
3627 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
3628 | if (ret != -ENOENT) | |
3629 | return ret; | |
3630 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
3631 | } | |
3632 | ||
16b4289c | 3633 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
3634 | { |
3635 | struct nfs_server *server = NFS_SERVER(inode); | |
3636 | struct page *pages[NFS4ACL_MAXPAGES]; | |
3637 | struct nfs_setaclargs arg = { | |
3638 | .fh = NFS_FH(inode), | |
3639 | .acl_pages = pages, | |
3640 | .acl_len = buflen, | |
3641 | }; | |
73c403a9 | 3642 | struct nfs_setaclres res; |
4b580ee3 BF |
3643 | struct rpc_message msg = { |
3644 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
3645 | .rpc_argp = &arg, | |
73c403a9 | 3646 | .rpc_resp = &res, |
4b580ee3 | 3647 | }; |
e9e3d724 | 3648 | int ret, i; |
4b580ee3 BF |
3649 | |
3650 | if (!nfs4_server_supports_acls(server)) | |
3651 | return -EOPNOTSUPP; | |
e9e3d724 NH |
3652 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
3653 | if (i < 0) | |
3654 | return i; | |
642ac549 | 3655 | nfs_inode_return_delegation(inode); |
7c513058 | 3656 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
3657 | |
3658 | /* | |
3659 | * Free each page after tx, so the only ref left is | |
3660 | * held by the network stack | |
3661 | */ | |
3662 | for (; i > 0; i--) | |
3663 | put_page(pages[i-1]); | |
3664 | ||
08a22b39 AK |
3665 | /* |
3666 | * Acl update can result in inode attribute update. | |
3667 | * so mark the attribute cache invalid. | |
3668 | */ | |
3669 | spin_lock(&inode->i_lock); | |
3670 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
3671 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
3672 | nfs_access_zap_cache(inode); |
3673 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
3674 | return ret; |
3675 | } | |
3676 | ||
16b4289c TM |
3677 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
3678 | { | |
3679 | struct nfs4_exception exception = { }; | |
3680 | int err; | |
3681 | do { | |
3682 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3683 | __nfs4_proc_set_acl(inode, buf, buflen), | |
3684 | &exception); | |
3685 | } while (exception.retry); | |
3686 | return err; | |
3687 | } | |
3688 | ||
1da177e4 | 3689 | static int |
aa5190d0 | 3690 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 3691 | { |
aa5190d0 TM |
3692 | struct nfs_client *clp = server->nfs_client; |
3693 | ||
3694 | if (task->tk_status >= 0) | |
1da177e4 LT |
3695 | return 0; |
3696 | switch(task->tk_status) { | |
9e33bed5 TM |
3697 | case -NFS4ERR_ADMIN_REVOKED: |
3698 | case -NFS4ERR_BAD_STATEID: | |
3699 | case -NFS4ERR_OPENMODE: | |
3700 | if (state == NULL) | |
3701 | break; | |
0400a6b0 TM |
3702 | nfs4_schedule_stateid_recovery(server, state); |
3703 | goto wait_on_recovery; | |
0ced63d1 TM |
3704 | case -NFS4ERR_EXPIRED: |
3705 | if (state != NULL) | |
3706 | nfs4_schedule_stateid_recovery(server, state); | |
1da177e4 | 3707 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 3708 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
3709 | nfs4_schedule_lease_recovery(clp); |
3710 | goto wait_on_recovery; | |
4745e315 AA |
3711 | #if defined(CONFIG_NFS_V4_1) |
3712 | case -NFS4ERR_BADSESSION: | |
3713 | case -NFS4ERR_BADSLOT: | |
3714 | case -NFS4ERR_BAD_HIGH_SLOT: | |
3715 | case -NFS4ERR_DEADSESSION: | |
3716 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
3717 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
3718 | case -NFS4ERR_SEQ_MISORDERED: | |
3719 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
3720 | task->tk_status); | |
0400a6b0 | 3721 | nfs4_schedule_session_recovery(clp->cl_session); |
4745e315 AA |
3722 | task->tk_status = 0; |
3723 | return -EAGAIN; | |
3724 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 3725 | case -NFS4ERR_DELAY: |
aa5190d0 | 3726 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 3727 | case -NFS4ERR_GRACE: |
2c643488 | 3728 | case -EKEYEXPIRED: |
1da177e4 LT |
3729 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
3730 | task->tk_status = 0; | |
3731 | return -EAGAIN; | |
a8a4ae3a | 3732 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
3733 | case -NFS4ERR_OLD_STATEID: |
3734 | task->tk_status = 0; | |
3735 | return -EAGAIN; | |
3736 | } | |
3737 | task->tk_status = nfs4_map_errors(task->tk_status); | |
3738 | return 0; | |
0400a6b0 | 3739 | wait_on_recovery: |
a2c0b9e2 | 3740 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
3741 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
3742 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
3743 | task->tk_status = 0; | |
3744 | return -EAGAIN; | |
1da177e4 LT |
3745 | } |
3746 | ||
bb8b27e5 TM |
3747 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
3748 | unsigned short port, struct rpc_cred *cred, | |
3749 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
3750 | { |
3751 | nfs4_verifier sc_verifier; | |
3752 | struct nfs4_setclientid setclientid = { | |
3753 | .sc_verifier = &sc_verifier, | |
3754 | .sc_prog = program, | |
f4eecd5d | 3755 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
3756 | }; |
3757 | struct rpc_message msg = { | |
3758 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
3759 | .rpc_argp = &setclientid, | |
bb8b27e5 | 3760 | .rpc_resp = res, |
286d7d6a | 3761 | .rpc_cred = cred, |
1da177e4 | 3762 | }; |
bc4785cd | 3763 | __be32 *p; |
1da177e4 LT |
3764 | int loop = 0; |
3765 | int status; | |
3766 | ||
bc4785cd | 3767 | p = (__be32*)sc_verifier.data; |
1da177e4 LT |
3768 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); |
3769 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
3770 | ||
3771 | for(;;) { | |
3772 | setclientid.sc_name_len = scnprintf(setclientid.sc_name, | |
69dd716c | 3773 | sizeof(setclientid.sc_name), "%s/%s %s %s %u", |
d4d3c507 CL |
3774 | clp->cl_ipaddr, |
3775 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3776 | RPC_DISPLAY_ADDR), | |
69dd716c TM |
3777 | rpc_peeraddr2str(clp->cl_rpcclient, |
3778 | RPC_DISPLAY_PROTO), | |
78ea323b | 3779 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
1da177e4 LT |
3780 | clp->cl_id_uniquifier); |
3781 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, | |
d4d3c507 CL |
3782 | sizeof(setclientid.sc_netid), |
3783 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3784 | RPC_DISPLAY_NETID)); | |
1da177e4 | 3785 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 3786 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
3787 | clp->cl_ipaddr, port >> 8, port & 255); |
3788 | ||
1bd714f2 | 3789 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
3790 | if (status != -NFS4ERR_CLID_INUSE) |
3791 | break; | |
fd954ae1 TM |
3792 | if (loop != 0) { |
3793 | ++clp->cl_id_uniquifier; | |
1da177e4 | 3794 | break; |
fd954ae1 TM |
3795 | } |
3796 | ++loop; | |
3797 | ssleep(clp->cl_lease_time / HZ + 1); | |
1da177e4 LT |
3798 | } |
3799 | return status; | |
3800 | } | |
3801 | ||
fd954ae1 | 3802 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
3803 | struct nfs4_setclientid_res *arg, |
3804 | struct rpc_cred *cred) | |
1da177e4 LT |
3805 | { |
3806 | struct nfs_fsinfo fsinfo; | |
3807 | struct rpc_message msg = { | |
3808 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 3809 | .rpc_argp = arg, |
1da177e4 | 3810 | .rpc_resp = &fsinfo, |
286d7d6a | 3811 | .rpc_cred = cred, |
1da177e4 LT |
3812 | }; |
3813 | unsigned long now; | |
3814 | int status; | |
3815 | ||
3816 | now = jiffies; | |
1bd714f2 | 3817 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
3818 | if (status == 0) { |
3819 | spin_lock(&clp->cl_lock); | |
3820 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
3821 | clp->cl_last_renewal = now; | |
3822 | spin_unlock(&clp->cl_lock); | |
3823 | } | |
3824 | return status; | |
3825 | } | |
3826 | ||
fe650407 TM |
3827 | struct nfs4_delegreturndata { |
3828 | struct nfs4_delegreturnargs args; | |
fa178f29 | 3829 | struct nfs4_delegreturnres res; |
fe650407 TM |
3830 | struct nfs_fh fh; |
3831 | nfs4_stateid stateid; | |
26e976a8 | 3832 | unsigned long timestamp; |
fa178f29 | 3833 | struct nfs_fattr fattr; |
fe650407 TM |
3834 | int rpc_status; |
3835 | }; | |
3836 | ||
fe650407 TM |
3837 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
3838 | { | |
3839 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 3840 | |
14516c3a TM |
3841 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
3842 | return; | |
938e1010 | 3843 | |
79708861 RL |
3844 | switch (task->tk_status) { |
3845 | case -NFS4ERR_STALE_STATEID: | |
3846 | case -NFS4ERR_EXPIRED: | |
3847 | case 0: | |
fa178f29 | 3848 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
3849 | break; |
3850 | default: | |
3851 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
3852 | -EAGAIN) { | |
3853 | nfs_restart_rpc(task, data->res.server->nfs_client); | |
3854 | return; | |
3855 | } | |
3856 | } | |
3857 | data->rpc_status = task->tk_status; | |
fe650407 TM |
3858 | } |
3859 | ||
3860 | static void nfs4_delegreturn_release(void *calldata) | |
3861 | { | |
fe650407 TM |
3862 | kfree(calldata); |
3863 | } | |
3864 | ||
938e1010 AA |
3865 | #if defined(CONFIG_NFS_V4_1) |
3866 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
3867 | { | |
3868 | struct nfs4_delegreturndata *d_data; | |
3869 | ||
3870 | d_data = (struct nfs4_delegreturndata *)data; | |
3871 | ||
035168ab | 3872 | if (nfs4_setup_sequence(d_data->res.server, |
938e1010 AA |
3873 | &d_data->args.seq_args, |
3874 | &d_data->res.seq_res, 1, task)) | |
3875 | return; | |
3876 | rpc_call_start(task); | |
3877 | } | |
3878 | #endif /* CONFIG_NFS_V4_1 */ | |
3879 | ||
c8d149f3 | 3880 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
3881 | #if defined(CONFIG_NFS_V4_1) |
3882 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
3883 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
3884 | .rpc_call_done = nfs4_delegreturn_done, |
3885 | .rpc_release = nfs4_delegreturn_release, | |
3886 | }; | |
3887 | ||
e6f81075 | 3888 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
3889 | { |
3890 | struct nfs4_delegreturndata *data; | |
fa178f29 | 3891 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 3892 | struct rpc_task *task; |
5138fde0 TM |
3893 | struct rpc_message msg = { |
3894 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
3895 | .rpc_cred = cred, | |
3896 | }; | |
c970aa85 TM |
3897 | struct rpc_task_setup task_setup_data = { |
3898 | .rpc_client = server->client, | |
5138fde0 | 3899 | .rpc_message = &msg, |
c970aa85 TM |
3900 | .callback_ops = &nfs4_delegreturn_ops, |
3901 | .flags = RPC_TASK_ASYNC, | |
3902 | }; | |
e6f81075 | 3903 | int status = 0; |
fe650407 | 3904 | |
8535b2be | 3905 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
3906 | if (data == NULL) |
3907 | return -ENOMEM; | |
3908 | data->args.fhandle = &data->fh; | |
3909 | data->args.stateid = &data->stateid; | |
fa178f29 | 3910 | data->args.bitmask = server->attr_bitmask; |
fe650407 TM |
3911 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
3912 | memcpy(&data->stateid, stateid, sizeof(data->stateid)); | |
fa178f29 TM |
3913 | data->res.fattr = &data->fattr; |
3914 | data->res.server = server; | |
5138fde0 | 3915 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 3916 | data->timestamp = jiffies; |
fe650407 TM |
3917 | data->rpc_status = 0; |
3918 | ||
c970aa85 | 3919 | task_setup_data.callback_data = data; |
1174dd1f TM |
3920 | msg.rpc_argp = &data->args; |
3921 | msg.rpc_resp = &data->res; | |
c970aa85 | 3922 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 3923 | if (IS_ERR(task)) |
fe650407 | 3924 | return PTR_ERR(task); |
e6f81075 TM |
3925 | if (!issync) |
3926 | goto out; | |
fe650407 | 3927 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
3928 | if (status != 0) |
3929 | goto out; | |
3930 | status = data->rpc_status; | |
3931 | if (status != 0) | |
3932 | goto out; | |
3933 | nfs_refresh_inode(inode, &data->fattr); | |
3934 | out: | |
e6b3c4db | 3935 | rpc_put_task(task); |
fe650407 | 3936 | return status; |
1da177e4 LT |
3937 | } |
3938 | ||
e6f81075 | 3939 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
3940 | { |
3941 | struct nfs_server *server = NFS_SERVER(inode); | |
3942 | struct nfs4_exception exception = { }; | |
3943 | int err; | |
3944 | do { | |
e6f81075 | 3945 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
3946 | switch (err) { |
3947 | case -NFS4ERR_STALE_STATEID: | |
3948 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
3949 | case 0: |
3950 | return 0; | |
3951 | } | |
3952 | err = nfs4_handle_exception(server, err, &exception); | |
3953 | } while (exception.retry); | |
3954 | return err; | |
3955 | } | |
3956 | ||
3957 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
3958 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
3959 | ||
3960 | /* | |
3961 | * sleep, with exponential backoff, and retry the LOCK operation. | |
3962 | */ | |
3963 | static unsigned long | |
3964 | nfs4_set_lock_task_retry(unsigned long timeout) | |
3965 | { | |
150030b7 | 3966 | schedule_timeout_killable(timeout); |
1da177e4 LT |
3967 | timeout <<= 1; |
3968 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
3969 | return NFS4_LOCK_MAXTIMEOUT; | |
3970 | return timeout; | |
3971 | } | |
3972 | ||
1da177e4 LT |
3973 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
3974 | { | |
3975 | struct inode *inode = state->inode; | |
3976 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 3977 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 3978 | struct nfs_lockt_args arg = { |
1da177e4 | 3979 | .fh = NFS_FH(inode), |
911d1aaf | 3980 | .fl = request, |
1da177e4 | 3981 | }; |
911d1aaf TM |
3982 | struct nfs_lockt_res res = { |
3983 | .denied = request, | |
1da177e4 LT |
3984 | }; |
3985 | struct rpc_message msg = { | |
3986 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
3987 | .rpc_argp = &arg, | |
3988 | .rpc_resp = &res, | |
3989 | .rpc_cred = state->owner->so_cred, | |
3990 | }; | |
1da177e4 LT |
3991 | struct nfs4_lock_state *lsp; |
3992 | int status; | |
3993 | ||
911d1aaf | 3994 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
3995 | status = nfs4_set_lock_state(state, request); |
3996 | if (status != 0) | |
3997 | goto out; | |
3998 | lsp = request->fl_u.nfs4_fl.owner; | |
9f958ab8 | 3999 | arg.lock_owner.id = lsp->ls_id.id; |
d035c36c | 4000 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 4001 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
4002 | switch (status) { |
4003 | case 0: | |
4004 | request->fl_type = F_UNLCK; | |
4005 | break; | |
4006 | case -NFS4ERR_DENIED: | |
4007 | status = 0; | |
1da177e4 | 4008 | } |
70cc6487 | 4009 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 4010 | out: |
1da177e4 LT |
4011 | return status; |
4012 | } | |
4013 | ||
4014 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4015 | { | |
4016 | struct nfs4_exception exception = { }; | |
4017 | int err; | |
4018 | ||
4019 | do { | |
4020 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
4021 | _nfs4_proc_getlk(state, cmd, request), | |
4022 | &exception); | |
4023 | } while (exception.retry); | |
4024 | return err; | |
4025 | } | |
4026 | ||
4027 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
4028 | { | |
4029 | int res = 0; | |
4030 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
4031 | case FL_POSIX: | |
4032 | res = posix_lock_file_wait(file, fl); | |
4033 | break; | |
4034 | case FL_FLOCK: | |
4035 | res = flock_lock_file_wait(file, fl); | |
4036 | break; | |
4037 | default: | |
4038 | BUG(); | |
4039 | } | |
1da177e4 LT |
4040 | return res; |
4041 | } | |
4042 | ||
faf5f49c | 4043 | struct nfs4_unlockdata { |
911d1aaf TM |
4044 | struct nfs_locku_args arg; |
4045 | struct nfs_locku_res res; | |
faf5f49c TM |
4046 | struct nfs4_lock_state *lsp; |
4047 | struct nfs_open_context *ctx; | |
911d1aaf TM |
4048 | struct file_lock fl; |
4049 | const struct nfs_server *server; | |
26e976a8 | 4050 | unsigned long timestamp; |
faf5f49c TM |
4051 | }; |
4052 | ||
911d1aaf TM |
4053 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
4054 | struct nfs_open_context *ctx, | |
4055 | struct nfs4_lock_state *lsp, | |
4056 | struct nfs_seqid *seqid) | |
4057 | { | |
4058 | struct nfs4_unlockdata *p; | |
4059 | struct inode *inode = lsp->ls_state->inode; | |
4060 | ||
8535b2be | 4061 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
4062 | if (p == NULL) |
4063 | return NULL; | |
4064 | p->arg.fh = NFS_FH(inode); | |
4065 | p->arg.fl = &p->fl; | |
4066 | p->arg.seqid = seqid; | |
c1d51931 | 4067 | p->res.seqid = seqid; |
911d1aaf TM |
4068 | p->arg.stateid = &lsp->ls_stateid; |
4069 | p->lsp = lsp; | |
4070 | atomic_inc(&lsp->ls_count); | |
4071 | /* Ensure we don't close file until we're done freeing locks! */ | |
4072 | p->ctx = get_nfs_open_context(ctx); | |
4073 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4074 | p->server = NFS_SERVER(inode); | |
4075 | return p; | |
4076 | } | |
4077 | ||
06f814a3 | 4078 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 4079 | { |
963d8fe5 | 4080 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 4081 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
4082 | nfs4_put_lock_state(calldata->lsp); |
4083 | put_nfs_open_context(calldata->ctx); | |
4084 | kfree(calldata); | |
faf5f49c TM |
4085 | } |
4086 | ||
963d8fe5 | 4087 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 4088 | { |
963d8fe5 | 4089 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4090 | |
14516c3a TM |
4091 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
4092 | return; | |
faf5f49c TM |
4093 | switch (task->tk_status) { |
4094 | case 0: | |
4095 | memcpy(calldata->lsp->ls_stateid.data, | |
911d1aaf | 4096 | calldata->res.stateid.data, |
faf5f49c | 4097 | sizeof(calldata->lsp->ls_stateid.data)); |
26e976a8 | 4098 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 4099 | break; |
9e33bed5 TM |
4100 | case -NFS4ERR_BAD_STATEID: |
4101 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
4102 | case -NFS4ERR_STALE_STATEID: |
4103 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
4104 | break; |
4105 | default: | |
9e33bed5 | 4106 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
0110ee15 | 4107 | nfs_restart_rpc(task, |
d61e612a | 4108 | calldata->server->nfs_client); |
faf5f49c | 4109 | } |
faf5f49c TM |
4110 | } |
4111 | ||
4ce70ada | 4112 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 4113 | { |
4ce70ada | 4114 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4115 | |
911d1aaf | 4116 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c TM |
4117 | return; |
4118 | if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) { | |
963d8fe5 TM |
4119 | /* Note: exit _without_ running nfs4_locku_done */ |
4120 | task->tk_action = NULL; | |
faf5f49c TM |
4121 | return; |
4122 | } | |
26e976a8 | 4123 | calldata->timestamp = jiffies; |
035168ab | 4124 | if (nfs4_setup_sequence(calldata->server, |
a893693c AA |
4125 | &calldata->arg.seq_args, |
4126 | &calldata->res.seq_res, 1, task)) | |
4127 | return; | |
5138fde0 | 4128 | rpc_call_start(task); |
faf5f49c TM |
4129 | } |
4130 | ||
963d8fe5 | 4131 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 4132 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 4133 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 4134 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
4135 | }; |
4136 | ||
a5d16a4d TM |
4137 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
4138 | struct nfs_open_context *ctx, | |
4139 | struct nfs4_lock_state *lsp, | |
4140 | struct nfs_seqid *seqid) | |
4141 | { | |
4142 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
4143 | struct rpc_message msg = { |
4144 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
4145 | .rpc_cred = ctx->cred, | |
4146 | }; | |
c970aa85 TM |
4147 | struct rpc_task_setup task_setup_data = { |
4148 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 4149 | .rpc_message = &msg, |
c970aa85 | 4150 | .callback_ops = &nfs4_locku_ops, |
101070ca | 4151 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4152 | .flags = RPC_TASK_ASYNC, |
4153 | }; | |
a5d16a4d | 4154 | |
137d6aca FF |
4155 | /* Ensure this is an unlock - when canceling a lock, the |
4156 | * canceled lock is passed in, and it won't be an unlock. | |
4157 | */ | |
4158 | fl->fl_type = F_UNLCK; | |
4159 | ||
a5d16a4d TM |
4160 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
4161 | if (data == NULL) { | |
4162 | nfs_free_seqid(seqid); | |
4163 | return ERR_PTR(-ENOMEM); | |
4164 | } | |
4165 | ||
1174dd1f TM |
4166 | msg.rpc_argp = &data->arg; |
4167 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4168 | task_setup_data.callback_data = data; |
4169 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
4170 | } |
4171 | ||
faf5f49c TM |
4172 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
4173 | { | |
19e03c57 | 4174 | struct nfs_inode *nfsi = NFS_I(state->inode); |
911d1aaf | 4175 | struct nfs_seqid *seqid; |
1da177e4 | 4176 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
4177 | struct rpc_task *task; |
4178 | int status = 0; | |
536ff0f8 | 4179 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 4180 | |
8d0a8a9d | 4181 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
4182 | /* Unlock _before_ we do the RPC call */ |
4183 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
4184 | down_read(&nfsi->rwsem); |
4185 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
4186 | up_read(&nfsi->rwsem); | |
9b073574 | 4187 | goto out; |
19e03c57 TM |
4188 | } |
4189 | up_read(&nfsi->rwsem); | |
8d0a8a9d | 4190 | if (status != 0) |
9b073574 TM |
4191 | goto out; |
4192 | /* Is this a delegated lock? */ | |
4193 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
4194 | goto out; | |
8d0a8a9d | 4195 | lsp = request->fl_u.nfs4_fl.owner; |
8535b2be | 4196 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 4197 | status = -ENOMEM; |
911d1aaf | 4198 | if (seqid == NULL) |
9b073574 | 4199 | goto out; |
cd3758e3 | 4200 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
4201 | status = PTR_ERR(task); |
4202 | if (IS_ERR(task)) | |
9b073574 | 4203 | goto out; |
a5d16a4d | 4204 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 4205 | rpc_put_task(task); |
9b073574 | 4206 | out: |
536ff0f8 | 4207 | request->fl_flags = fl_flags; |
1da177e4 LT |
4208 | return status; |
4209 | } | |
4210 | ||
a5d16a4d TM |
4211 | struct nfs4_lockdata { |
4212 | struct nfs_lock_args arg; | |
4213 | struct nfs_lock_res res; | |
4214 | struct nfs4_lock_state *lsp; | |
4215 | struct nfs_open_context *ctx; | |
4216 | struct file_lock fl; | |
26e976a8 | 4217 | unsigned long timestamp; |
a5d16a4d TM |
4218 | int rpc_status; |
4219 | int cancelled; | |
66179efe | 4220 | struct nfs_server *server; |
a5d16a4d TM |
4221 | }; |
4222 | ||
4223 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
4224 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
4225 | gfp_t gfp_mask) | |
1da177e4 | 4226 | { |
a5d16a4d TM |
4227 | struct nfs4_lockdata *p; |
4228 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 4229 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 4230 | |
8535b2be | 4231 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
4232 | if (p == NULL) |
4233 | return NULL; | |
4234 | ||
4235 | p->arg.fh = NFS_FH(inode); | |
4236 | p->arg.fl = &p->fl; | |
8535b2be | 4237 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4238 | if (p->arg.open_seqid == NULL) |
4239 | goto out_free; | |
8535b2be | 4240 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4241 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4242 | goto out_free_seqid; |
a5d16a4d | 4243 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4244 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 4245 | p->arg.lock_owner.id = lsp->ls_id.id; |
d035c36c | 4246 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 4247 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4248 | p->lsp = lsp; |
66179efe | 4249 | p->server = server; |
a5d16a4d TM |
4250 | atomic_inc(&lsp->ls_count); |
4251 | p->ctx = get_nfs_open_context(ctx); | |
4252 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4253 | return p; | |
2f74c0a0 TM |
4254 | out_free_seqid: |
4255 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4256 | out_free: |
4257 | kfree(p); | |
4258 | return NULL; | |
4259 | } | |
4260 | ||
4261 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4262 | { | |
4263 | struct nfs4_lockdata *data = calldata; | |
4264 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4265 | |
3110ff80 | 4266 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
4267 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
4268 | return; | |
a5d16a4d TM |
4269 | /* Do we need to do an open_to_lock_owner? */ |
4270 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 TM |
4271 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
4272 | return; | |
a5d16a4d TM |
4273 | data->arg.open_stateid = &state->stateid; |
4274 | data->arg.new_lock_owner = 1; | |
c1d51931 | 4275 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4276 | } else |
4277 | data->arg.new_lock_owner = 0; | |
26e976a8 | 4278 | data->timestamp = jiffies; |
035168ab TM |
4279 | if (nfs4_setup_sequence(data->server, |
4280 | &data->arg.seq_args, | |
66179efe AA |
4281 | &data->res.seq_res, 1, task)) |
4282 | return; | |
5138fde0 | 4283 | rpc_call_start(task); |
3110ff80 | 4284 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
a5d16a4d TM |
4285 | } |
4286 | ||
b257957e AB |
4287 | static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata) |
4288 | { | |
4289 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
4290 | nfs4_lock_prepare(task, calldata); | |
4291 | } | |
4292 | ||
a5d16a4d TM |
4293 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4294 | { | |
4295 | struct nfs4_lockdata *data = calldata; | |
4296 | ||
3110ff80 | 4297 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4298 | |
14516c3a TM |
4299 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4300 | return; | |
66179efe | 4301 | |
a5d16a4d | 4302 | data->rpc_status = task->tk_status; |
a5d16a4d | 4303 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4304 | if (data->rpc_status == 0) |
4305 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4306 | else | |
4307 | goto out; | |
4308 | } | |
4309 | if (data->rpc_status == 0) { | |
4310 | memcpy(data->lsp->ls_stateid.data, data->res.stateid.data, | |
4311 | sizeof(data->lsp->ls_stateid.data)); | |
4312 | data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; | |
3d4ff43d | 4313 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 4314 | } |
a5d16a4d | 4315 | out: |
3110ff80 | 4316 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4317 | } |
4318 | ||
4319 | static void nfs4_lock_release(void *calldata) | |
4320 | { | |
4321 | struct nfs4_lockdata *data = calldata; | |
4322 | ||
3110ff80 | 4323 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4324 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4325 | if (data->cancelled != 0) { |
4326 | struct rpc_task *task; | |
4327 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4328 | data->arg.lock_seqid); | |
4329 | if (!IS_ERR(task)) | |
bf294b41 | 4330 | rpc_put_task_async(task); |
3110ff80 | 4331 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4332 | } else |
4333 | nfs_free_seqid(data->arg.lock_seqid); | |
4334 | nfs4_put_lock_state(data->lsp); | |
4335 | put_nfs_open_context(data->ctx); | |
4336 | kfree(data); | |
3110ff80 | 4337 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4338 | } |
4339 | ||
4340 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4341 | .rpc_call_prepare = nfs4_lock_prepare, | |
4342 | .rpc_call_done = nfs4_lock_done, | |
4343 | .rpc_release = nfs4_lock_release, | |
4344 | }; | |
4345 | ||
b257957e AB |
4346 | static const struct rpc_call_ops nfs4_recover_lock_ops = { |
4347 | .rpc_call_prepare = nfs4_recover_lock_prepare, | |
4348 | .rpc_call_done = nfs4_lock_done, | |
4349 | .rpc_release = nfs4_lock_release, | |
4350 | }; | |
4351 | ||
2bee72a6 TM |
4352 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4353 | { | |
2bee72a6 TM |
4354 | switch (error) { |
4355 | case -NFS4ERR_ADMIN_REVOKED: | |
4356 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 4357 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 TM |
4358 | if (new_lock_owner != 0 || |
4359 | (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0) | |
ecac799a | 4360 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
4361 | break; |
4362 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 4363 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
4364 | case -NFS4ERR_EXPIRED: |
4365 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
4366 | }; |
4367 | } | |
4368 | ||
afe6c27c | 4369 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4370 | { |
4371 | struct nfs4_lockdata *data; | |
4372 | struct rpc_task *task; | |
5138fde0 TM |
4373 | struct rpc_message msg = { |
4374 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4375 | .rpc_cred = state->owner->so_cred, | |
4376 | }; | |
c970aa85 TM |
4377 | struct rpc_task_setup task_setup_data = { |
4378 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4379 | .rpc_message = &msg, |
c970aa85 | 4380 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4381 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4382 | .flags = RPC_TASK_ASYNC, |
4383 | }; | |
a5d16a4d TM |
4384 | int ret; |
4385 | ||
3110ff80 | 4386 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4387 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4388 | fl->fl_u.nfs4_fl.owner, |
4389 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4390 | if (data == NULL) |
4391 | return -ENOMEM; | |
4392 | if (IS_SETLKW(cmd)) | |
4393 | data->arg.block = 1; | |
b257957e AB |
4394 | if (recovery_type > NFS_LOCK_NEW) { |
4395 | if (recovery_type == NFS_LOCK_RECLAIM) | |
afe6c27c | 4396 | data->arg.reclaim = NFS_LOCK_RECLAIM; |
b257957e AB |
4397 | task_setup_data.callback_ops = &nfs4_recover_lock_ops; |
4398 | } | |
1174dd1f TM |
4399 | msg.rpc_argp = &data->arg; |
4400 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4401 | task_setup_data.callback_data = data; |
4402 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 4403 | if (IS_ERR(task)) |
a5d16a4d | 4404 | return PTR_ERR(task); |
a5d16a4d TM |
4405 | ret = nfs4_wait_for_completion_rpc_task(task); |
4406 | if (ret == 0) { | |
4407 | ret = data->rpc_status; | |
2bee72a6 TM |
4408 | if (ret) |
4409 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4410 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4411 | } else |
4412 | data->cancelled = 1; | |
e6b3c4db | 4413 | rpc_put_task(task); |
3110ff80 | 4414 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4415 | return ret; |
1da177e4 LT |
4416 | } |
4417 | ||
4418 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4419 | { | |
202b50dc TM |
4420 | struct nfs_server *server = NFS_SERVER(state->inode); |
4421 | struct nfs4_exception exception = { }; | |
4422 | int err; | |
4423 | ||
4424 | do { | |
42a2d13e TM |
4425 | /* Cache the lock if possible... */ |
4426 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4427 | return 0; | |
afe6c27c | 4428 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 4429 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
4430 | break; |
4431 | nfs4_handle_exception(server, err, &exception); | |
4432 | } while (exception.retry); | |
4433 | return err; | |
1da177e4 LT |
4434 | } |
4435 | ||
4436 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4437 | { | |
202b50dc TM |
4438 | struct nfs_server *server = NFS_SERVER(state->inode); |
4439 | struct nfs4_exception exception = { }; | |
4440 | int err; | |
4441 | ||
6bfc93ef TM |
4442 | err = nfs4_set_lock_state(state, request); |
4443 | if (err != 0) | |
4444 | return err; | |
202b50dc | 4445 | do { |
42a2d13e TM |
4446 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4447 | return 0; | |
afe6c27c | 4448 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
4449 | switch (err) { |
4450 | default: | |
4451 | goto out; | |
4452 | case -NFS4ERR_GRACE: | |
4453 | case -NFS4ERR_DELAY: | |
4454 | nfs4_handle_exception(server, err, &exception); | |
4455 | err = 0; | |
4456 | } | |
202b50dc | 4457 | } while (exception.retry); |
a9ed2e25 | 4458 | out: |
202b50dc | 4459 | return err; |
1da177e4 LT |
4460 | } |
4461 | ||
f062eb6c BS |
4462 | #if defined(CONFIG_NFS_V4_1) |
4463 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4464 | { | |
4465 | int status; | |
4466 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4467 | ||
4468 | status = nfs41_test_stateid(server, state); | |
4469 | if (status == NFS_OK) | |
4470 | return 0; | |
4471 | nfs41_free_stateid(server, state); | |
4472 | return nfs4_lock_expired(state, request); | |
4473 | } | |
4474 | #endif | |
4475 | ||
1da177e4 LT |
4476 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4477 | { | |
19e03c57 | 4478 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 4479 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 4480 | int status = -ENOLCK; |
1da177e4 | 4481 | |
8e469ebd TM |
4482 | if ((fl_flags & FL_POSIX) && |
4483 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
4484 | goto out; | |
6bfc93ef | 4485 | /* Is this a delegated open? */ |
6bfc93ef TM |
4486 | status = nfs4_set_lock_state(state, request); |
4487 | if (status != 0) | |
4488 | goto out; | |
01c3b861 TM |
4489 | request->fl_flags |= FL_ACCESS; |
4490 | status = do_vfs_lock(request->fl_file, request); | |
4491 | if (status < 0) | |
4492 | goto out; | |
19e03c57 | 4493 | down_read(&nfsi->rwsem); |
01c3b861 | 4494 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 4495 | /* Yes: cache locks! */ |
01c3b861 | 4496 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
4497 | request->fl_flags = fl_flags & ~FL_SLEEP; |
4498 | status = do_vfs_lock(request->fl_file, request); | |
4499 | goto out_unlock; | |
01c3b861 | 4500 | } |
afe6c27c | 4501 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 4502 | if (status != 0) |
01c3b861 | 4503 | goto out_unlock; |
6bfc93ef | 4504 | /* Note: we always want to sleep here! */ |
01c3b861 | 4505 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 4506 | if (do_vfs_lock(request->fl_file, request) < 0) |
3110ff80 | 4507 | printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __func__); |
01c3b861 | 4508 | out_unlock: |
19e03c57 | 4509 | up_read(&nfsi->rwsem); |
01c3b861 TM |
4510 | out: |
4511 | request->fl_flags = fl_flags; | |
1da177e4 LT |
4512 | return status; |
4513 | } | |
4514 | ||
4515 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4516 | { | |
4517 | struct nfs4_exception exception = { }; | |
4518 | int err; | |
4519 | ||
4520 | do { | |
965b5d67 TM |
4521 | err = _nfs4_proc_setlk(state, cmd, request); |
4522 | if (err == -NFS4ERR_DENIED) | |
4523 | err = -EAGAIN; | |
1da177e4 | 4524 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 4525 | err, &exception); |
1da177e4 LT |
4526 | } while (exception.retry); |
4527 | return err; | |
4528 | } | |
4529 | ||
4530 | static int | |
4531 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
4532 | { | |
4533 | struct nfs_open_context *ctx; | |
4534 | struct nfs4_state *state; | |
4535 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
4536 | int status; | |
4537 | ||
4538 | /* verify open state */ | |
cd3758e3 | 4539 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
4540 | state = ctx->state; |
4541 | ||
4542 | if (request->fl_start < 0 || request->fl_end < 0) | |
4543 | return -EINVAL; | |
4544 | ||
d953126a TM |
4545 | if (IS_GETLK(cmd)) { |
4546 | if (state != NULL) | |
4547 | return nfs4_proc_getlk(state, F_GETLK, request); | |
4548 | return 0; | |
4549 | } | |
1da177e4 LT |
4550 | |
4551 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
4552 | return -EINVAL; | |
4553 | ||
d953126a TM |
4554 | if (request->fl_type == F_UNLCK) { |
4555 | if (state != NULL) | |
4556 | return nfs4_proc_unlck(state, cmd, request); | |
4557 | return 0; | |
4558 | } | |
1da177e4 | 4559 | |
d953126a TM |
4560 | if (state == NULL) |
4561 | return -ENOLCK; | |
1da177e4 LT |
4562 | do { |
4563 | status = nfs4_proc_setlk(state, cmd, request); | |
4564 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
4565 | break; | |
4566 | timeout = nfs4_set_lock_task_retry(timeout); | |
4567 | status = -ERESTARTSYS; | |
4568 | if (signalled()) | |
4569 | break; | |
4570 | } while(status < 0); | |
1da177e4 LT |
4571 | return status; |
4572 | } | |
4573 | ||
888e694c TM |
4574 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
4575 | { | |
4576 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4577 | struct nfs4_exception exception = { }; | |
4578 | int err; | |
4579 | ||
4580 | err = nfs4_set_lock_state(state, fl); | |
4581 | if (err != 0) | |
4582 | goto out; | |
4583 | do { | |
afe6c27c | 4584 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
d5122201 TM |
4585 | switch (err) { |
4586 | default: | |
4587 | printk(KERN_ERR "%s: unhandled error %d.\n", | |
4588 | __func__, err); | |
4589 | case 0: | |
965b5d67 | 4590 | case -ESTALE: |
d5122201 TM |
4591 | goto out; |
4592 | case -NFS4ERR_EXPIRED: | |
0ced63d1 | 4593 | nfs4_schedule_stateid_recovery(server, state); |
d5122201 | 4594 | case -NFS4ERR_STALE_CLIENTID: |
965b5d67 | 4595 | case -NFS4ERR_STALE_STATEID: |
0400a6b0 TM |
4596 | nfs4_schedule_lease_recovery(server->nfs_client); |
4597 | goto out; | |
74e7bb73 RL |
4598 | case -NFS4ERR_BADSESSION: |
4599 | case -NFS4ERR_BADSLOT: | |
4600 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4601 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4602 | case -NFS4ERR_DEADSESSION: | |
0400a6b0 | 4603 | nfs4_schedule_session_recovery(server->nfs_client->cl_session); |
d5122201 | 4604 | goto out; |
965b5d67 TM |
4605 | case -ERESTARTSYS: |
4606 | /* | |
4607 | * The show must go on: exit, but mark the | |
4608 | * stateid as needing recovery. | |
4609 | */ | |
4610 | case -NFS4ERR_ADMIN_REVOKED: | |
4611 | case -NFS4ERR_BAD_STATEID: | |
4612 | case -NFS4ERR_OPENMODE: | |
0400a6b0 | 4613 | nfs4_schedule_stateid_recovery(server, state); |
965b5d67 TM |
4614 | err = 0; |
4615 | goto out; | |
168667c4 TM |
4616 | case -EKEYEXPIRED: |
4617 | /* | |
4618 | * User RPCSEC_GSS context has expired. | |
4619 | * We cannot recover this stateid now, so | |
4620 | * skip it and allow recovery thread to | |
4621 | * proceed. | |
4622 | */ | |
4623 | err = 0; | |
4624 | goto out; | |
965b5d67 TM |
4625 | case -ENOMEM: |
4626 | case -NFS4ERR_DENIED: | |
4627 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
4628 | err = 0; | |
4629 | goto out; | |
d5122201 TM |
4630 | case -NFS4ERR_DELAY: |
4631 | break; | |
4632 | } | |
888e694c TM |
4633 | err = nfs4_handle_exception(server, err, &exception); |
4634 | } while (exception.retry); | |
4635 | out: | |
4636 | return err; | |
4637 | } | |
6b3b5496 | 4638 | |
d3c7b7cc TM |
4639 | static void nfs4_release_lockowner_release(void *calldata) |
4640 | { | |
4641 | kfree(calldata); | |
4642 | } | |
4643 | ||
4644 | const struct rpc_call_ops nfs4_release_lockowner_ops = { | |
4645 | .rpc_release = nfs4_release_lockowner_release, | |
4646 | }; | |
4647 | ||
4648 | void nfs4_release_lockowner(const struct nfs4_lock_state *lsp) | |
4649 | { | |
4650 | struct nfs_server *server = lsp->ls_state->owner->so_server; | |
4651 | struct nfs_release_lockowner_args *args; | |
4652 | struct rpc_message msg = { | |
4653 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
4654 | }; | |
4655 | ||
4656 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
4657 | return; | |
4658 | args = kmalloc(sizeof(*args), GFP_NOFS); | |
4659 | if (!args) | |
4660 | return; | |
4661 | args->lock_owner.clientid = server->nfs_client->cl_clientid; | |
4662 | args->lock_owner.id = lsp->ls_id.id; | |
d035c36c | 4663 | args->lock_owner.s_dev = server->s_dev; |
d3c7b7cc TM |
4664 | msg.rpc_argp = args; |
4665 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, args); | |
4666 | } | |
4667 | ||
aa1870af BF |
4668 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
4669 | ||
64c2ce8b AK |
4670 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
4671 | const void *buf, size_t buflen, | |
4672 | int flags, int type) | |
6b3b5496 | 4673 | { |
64c2ce8b AK |
4674 | if (strcmp(key, "") != 0) |
4675 | return -EINVAL; | |
4b580ee3 | 4676 | |
64c2ce8b | 4677 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4678 | } |
4679 | ||
64c2ce8b AK |
4680 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
4681 | void *buf, size_t buflen, int type) | |
6b3b5496 | 4682 | { |
64c2ce8b AK |
4683 | if (strcmp(key, "") != 0) |
4684 | return -EINVAL; | |
aa1870af | 4685 | |
64c2ce8b | 4686 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4687 | } |
4688 | ||
64c2ce8b AK |
4689 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
4690 | size_t list_len, const char *name, | |
4691 | size_t name_len, int type) | |
6b3b5496 | 4692 | { |
64c2ce8b | 4693 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 4694 | |
096455a2 BF |
4695 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
4696 | return 0; | |
64c2ce8b AK |
4697 | |
4698 | if (list && len <= list_len) | |
4699 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 4700 | return len; |
6b3b5496 BF |
4701 | } |
4702 | ||
533eb461 AA |
4703 | /* |
4704 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
4705 | */ | |
69aaaae1 TM |
4706 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
4707 | { | |
533eb461 AA |
4708 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
4709 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
4710 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
4711 | (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL))) | |
69aaaae1 TM |
4712 | return; |
4713 | ||
4714 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
4715 | NFS_ATTR_FATTR_NLINK; | |
4716 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; | |
4717 | fattr->nlink = 2; | |
4718 | } | |
4719 | ||
56659e99 | 4720 | int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, |
7aaa0b3b | 4721 | struct nfs4_fs_locations *fs_locations, struct page *page) |
683b57b4 TM |
4722 | { |
4723 | struct nfs_server *server = NFS_SERVER(dir); | |
4724 | u32 bitmask[2] = { | |
361e624f | 4725 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
4726 | }; |
4727 | struct nfs4_fs_locations_arg args = { | |
4728 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 4729 | .name = name, |
683b57b4 TM |
4730 | .page = page, |
4731 | .bitmask = bitmask, | |
4732 | }; | |
22958463 BH |
4733 | struct nfs4_fs_locations_res res = { |
4734 | .fs_locations = fs_locations, | |
4735 | }; | |
683b57b4 TM |
4736 | struct rpc_message msg = { |
4737 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
4738 | .rpc_argp = &args, | |
22958463 | 4739 | .rpc_resp = &res, |
683b57b4 TM |
4740 | }; |
4741 | int status; | |
4742 | ||
3110ff80 | 4743 | dprintk("%s: start\n", __func__); |
533eb461 AA |
4744 | |
4745 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
4746 | * is not supported */ | |
4747 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
4748 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
4749 | else | |
4750 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
4751 | ||
c228fd3a | 4752 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 4753 | fs_locations->server = server; |
830b8e33 | 4754 | fs_locations->nlocations = 0; |
7c513058 | 4755 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 4756 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
4757 | return status; |
4758 | } | |
4759 | ||
5a5ea0d4 BS |
4760 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) |
4761 | { | |
4762 | int status; | |
4763 | struct nfs4_secinfo_arg args = { | |
4764 | .dir_fh = NFS_FH(dir), | |
4765 | .name = name, | |
4766 | }; | |
4767 | struct nfs4_secinfo_res res = { | |
4768 | .flavors = flavors, | |
4769 | }; | |
4770 | struct rpc_message msg = { | |
4771 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
4772 | .rpc_argp = &args, | |
4773 | .rpc_resp = &res, | |
4774 | }; | |
4775 | ||
4776 | dprintk("NFS call secinfo %s\n", name->name); | |
4777 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); | |
4778 | dprintk("NFS reply secinfo: %d\n", status); | |
4779 | return status; | |
4780 | } | |
4781 | ||
4782 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) | |
4783 | { | |
4784 | struct nfs4_exception exception = { }; | |
4785 | int err; | |
4786 | do { | |
4787 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
4788 | _nfs4_proc_secinfo(dir, name, flavors), | |
4789 | &exception); | |
4790 | } while (exception.retry); | |
4791 | return err; | |
4792 | } | |
4793 | ||
557134a3 | 4794 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
4795 | /* |
4796 | * Check the exchange flags returned by the server for invalid flags, having | |
4797 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
4798 | * DS flags set. | |
4799 | */ | |
4800 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
4801 | { | |
4802 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
4803 | goto out_inval; | |
4804 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
4805 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
4806 | goto out_inval; | |
4807 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
4808 | goto out_inval; | |
4809 | return NFS_OK; | |
4810 | out_inval: | |
4811 | return -NFS4ERR_INVAL; | |
4812 | } | |
4813 | ||
78fe0f41 WAA |
4814 | static bool |
4815 | nfs41_same_server_scope(struct server_scope *a, struct server_scope *b) | |
4816 | { | |
4817 | if (a->server_scope_sz == b->server_scope_sz && | |
4818 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
4819 | return true; | |
4820 | ||
4821 | return false; | |
4822 | } | |
4823 | ||
99fe60d0 BH |
4824 | /* |
4825 | * nfs4_proc_exchange_id() | |
4826 | * | |
4827 | * Since the clientid has expired, all compounds using sessions | |
4828 | * associated with the stale clientid will be returning | |
4829 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
4830 | * be in some phase of session reset. | |
4831 | */ | |
4d643d1d | 4832 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
4833 | { |
4834 | nfs4_verifier verifier; | |
4835 | struct nfs41_exchange_id_args args = { | |
4836 | .client = clp, | |
357f54d6 | 4837 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, |
99fe60d0 BH |
4838 | }; |
4839 | struct nfs41_exchange_id_res res = { | |
4840 | .client = clp, | |
4841 | }; | |
4842 | int status; | |
4843 | struct rpc_message msg = { | |
4844 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
4845 | .rpc_argp = &args, | |
4846 | .rpc_resp = &res, | |
4847 | .rpc_cred = cred, | |
4848 | }; | |
4849 | __be32 *p; | |
4850 | ||
4851 | dprintk("--> %s\n", __func__); | |
4852 | BUG_ON(clp == NULL); | |
a7b72103 | 4853 | |
99fe60d0 BH |
4854 | p = (u32 *)verifier.data; |
4855 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); | |
4856 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
4857 | args.verifier = &verifier; | |
4858 | ||
c7a360b0 AA |
4859 | args.id_len = scnprintf(args.id, sizeof(args.id), |
4860 | "%s/%s.%s/%u", | |
4861 | clp->cl_ipaddr, | |
4862 | init_utsname()->nodename, | |
4863 | init_utsname()->domainname, | |
4864 | clp->cl_rpcclient->cl_auth->au_flavor); | |
99fe60d0 | 4865 | |
78fe0f41 WAA |
4866 | res.server_scope = kzalloc(sizeof(struct server_scope), GFP_KERNEL); |
4867 | if (unlikely(!res.server_scope)) | |
4868 | return -ENOMEM; | |
4869 | ||
1bd714f2 | 4870 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c7a360b0 AA |
4871 | if (!status) |
4872 | status = nfs4_check_cl_exchange_flags(clp->cl_exchange_flags); | |
78fe0f41 WAA |
4873 | |
4874 | if (!status) { | |
4875 | if (clp->server_scope && | |
4876 | !nfs41_same_server_scope(clp->server_scope, | |
4877 | res.server_scope)) { | |
4878 | dprintk("%s: server_scope mismatch detected\n", | |
4879 | __func__); | |
4880 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
4881 | kfree(clp->server_scope); | |
4882 | clp->server_scope = NULL; | |
4883 | } | |
4884 | ||
4885 | if (!clp->server_scope) | |
4886 | clp->server_scope = res.server_scope; | |
4887 | else | |
4888 | kfree(res.server_scope); | |
4889 | } | |
4890 | ||
99fe60d0 BH |
4891 | dprintk("<-- %s status= %d\n", __func__, status); |
4892 | return status; | |
4893 | } | |
4894 | ||
2050f0cc AA |
4895 | struct nfs4_get_lease_time_data { |
4896 | struct nfs4_get_lease_time_args *args; | |
4897 | struct nfs4_get_lease_time_res *res; | |
4898 | struct nfs_client *clp; | |
4899 | }; | |
4900 | ||
4901 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
4902 | void *calldata) | |
4903 | { | |
4904 | int ret; | |
4905 | struct nfs4_get_lease_time_data *data = | |
4906 | (struct nfs4_get_lease_time_data *)calldata; | |
4907 | ||
4908 | dprintk("--> %s\n", __func__); | |
689cf5c1 | 4909 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
2050f0cc AA |
4910 | /* just setup sequence, do not trigger session recovery |
4911 | since we're invoked within one */ | |
4912 | ret = nfs41_setup_sequence(data->clp->cl_session, | |
689cf5c1 AB |
4913 | &data->args->la_seq_args, |
4914 | &data->res->lr_seq_res, 0, task); | |
2050f0cc AA |
4915 | |
4916 | BUG_ON(ret == -EAGAIN); | |
4917 | rpc_call_start(task); | |
4918 | dprintk("<-- %s\n", __func__); | |
4919 | } | |
4920 | ||
4921 | /* | |
4922 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
4923 | * from sequence operation or clientid errors. | |
4924 | */ | |
4925 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
4926 | { | |
4927 | struct nfs4_get_lease_time_data *data = | |
4928 | (struct nfs4_get_lease_time_data *)calldata; | |
4929 | ||
4930 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
4931 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
4932 | return; | |
2050f0cc AA |
4933 | switch (task->tk_status) { |
4934 | case -NFS4ERR_DELAY: | |
4935 | case -NFS4ERR_GRACE: | |
4936 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
4937 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
4938 | task->tk_status = 0; | |
a8a4ae3a AA |
4939 | /* fall through */ |
4940 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
0110ee15 | 4941 | nfs_restart_rpc(task, data->clp); |
2050f0cc AA |
4942 | return; |
4943 | } | |
2050f0cc AA |
4944 | dprintk("<-- %s\n", __func__); |
4945 | } | |
4946 | ||
4947 | struct rpc_call_ops nfs4_get_lease_time_ops = { | |
4948 | .rpc_call_prepare = nfs4_get_lease_time_prepare, | |
4949 | .rpc_call_done = nfs4_get_lease_time_done, | |
4950 | }; | |
4951 | ||
4952 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
4953 | { | |
4954 | struct rpc_task *task; | |
4955 | struct nfs4_get_lease_time_args args; | |
4956 | struct nfs4_get_lease_time_res res = { | |
4957 | .lr_fsinfo = fsinfo, | |
4958 | }; | |
4959 | struct nfs4_get_lease_time_data data = { | |
4960 | .args = &args, | |
4961 | .res = &res, | |
4962 | .clp = clp, | |
4963 | }; | |
4964 | struct rpc_message msg = { | |
4965 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
4966 | .rpc_argp = &args, | |
4967 | .rpc_resp = &res, | |
4968 | }; | |
4969 | struct rpc_task_setup task_setup = { | |
4970 | .rpc_client = clp->cl_rpcclient, | |
4971 | .rpc_message = &msg, | |
4972 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
4973 | .callback_data = &data, |
4974 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
4975 | }; |
4976 | int status; | |
4977 | ||
2050f0cc AA |
4978 | dprintk("--> %s\n", __func__); |
4979 | task = rpc_run_task(&task_setup); | |
4980 | ||
4981 | if (IS_ERR(task)) | |
4982 | status = PTR_ERR(task); | |
4983 | else { | |
4984 | status = task->tk_status; | |
4985 | rpc_put_task(task); | |
4986 | } | |
4987 | dprintk("<-- %s return %d\n", __func__, status); | |
4988 | ||
4989 | return status; | |
4990 | } | |
4991 | ||
b73dafa7 RL |
4992 | /* |
4993 | * Reset a slot table | |
4994 | */ | |
104aeba4 AA |
4995 | static int nfs4_reset_slot_table(struct nfs4_slot_table *tbl, u32 max_reqs, |
4996 | int ivalue) | |
ac72b7b3 | 4997 | { |
104aeba4 | 4998 | struct nfs4_slot *new = NULL; |
b73dafa7 | 4999 | int i; |
ac72b7b3 AA |
5000 | int ret = 0; |
5001 | ||
104aeba4 AA |
5002 | dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__, |
5003 | max_reqs, tbl->max_slots); | |
ac72b7b3 | 5004 | |
104aeba4 AA |
5005 | /* Does the newly negotiated max_reqs match the existing slot table? */ |
5006 | if (max_reqs != tbl->max_slots) { | |
5007 | ret = -ENOMEM; | |
5008 | new = kmalloc(max_reqs * sizeof(struct nfs4_slot), | |
8535b2be | 5009 | GFP_NOFS); |
104aeba4 AA |
5010 | if (!new) |
5011 | goto out; | |
5012 | ret = 0; | |
5013 | kfree(tbl->slots); | |
ac72b7b3 AA |
5014 | } |
5015 | spin_lock(&tbl->slot_tbl_lock); | |
104aeba4 AA |
5016 | if (new) { |
5017 | tbl->slots = new; | |
5018 | tbl->max_slots = max_reqs; | |
5019 | } | |
5020 | for (i = 0; i < tbl->max_slots; ++i) | |
b73dafa7 | 5021 | tbl->slots[i].seq_nr = ivalue; |
ac72b7b3 AA |
5022 | spin_unlock(&tbl->slot_tbl_lock); |
5023 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, | |
5024 | tbl, tbl->slots, tbl->max_slots); | |
5025 | out: | |
5026 | dprintk("<-- %s: return %d\n", __func__, ret); | |
5027 | return ret; | |
5028 | } | |
5029 | ||
b73dafa7 RL |
5030 | /* |
5031 | * Reset the forechannel and backchannel slot tables | |
5032 | */ | |
5033 | static int nfs4_reset_slot_tables(struct nfs4_session *session) | |
5034 | { | |
5035 | int status; | |
5036 | ||
5037 | status = nfs4_reset_slot_table(&session->fc_slot_table, | |
104aeba4 | 5038 | session->fc_attrs.max_reqs, 1); |
f8625a6a RL |
5039 | if (status) |
5040 | return status; | |
5041 | ||
5042 | status = nfs4_reset_slot_table(&session->bc_slot_table, | |
104aeba4 | 5043 | session->bc_attrs.max_reqs, 0); |
b73dafa7 RL |
5044 | return status; |
5045 | } | |
5046 | ||
f8625a6a RL |
5047 | /* Destroy the slot table */ |
5048 | static void nfs4_destroy_slot_tables(struct nfs4_session *session) | |
5049 | { | |
5050 | if (session->fc_slot_table.slots != NULL) { | |
5051 | kfree(session->fc_slot_table.slots); | |
5052 | session->fc_slot_table.slots = NULL; | |
5053 | } | |
5054 | if (session->bc_slot_table.slots != NULL) { | |
5055 | kfree(session->bc_slot_table.slots); | |
5056 | session->bc_slot_table.slots = NULL; | |
5057 | } | |
5058 | return; | |
5059 | } | |
5060 | ||
fc931582 AA |
5061 | /* |
5062 | * Initialize slot table | |
5063 | */ | |
050047ce RL |
5064 | static int nfs4_init_slot_table(struct nfs4_slot_table *tbl, |
5065 | int max_slots, int ivalue) | |
fc931582 | 5066 | { |
fc931582 AA |
5067 | struct nfs4_slot *slot; |
5068 | int ret = -ENOMEM; | |
5069 | ||
5070 | BUG_ON(max_slots > NFS4_MAX_SLOT_TABLE); | |
5071 | ||
050047ce | 5072 | dprintk("--> %s: max_reqs=%u\n", __func__, max_slots); |
fc931582 | 5073 | |
8535b2be | 5074 | slot = kcalloc(max_slots, sizeof(struct nfs4_slot), GFP_NOFS); |
fc931582 AA |
5075 | if (!slot) |
5076 | goto out; | |
fc931582 AA |
5077 | ret = 0; |
5078 | ||
5079 | spin_lock(&tbl->slot_tbl_lock); | |
fc931582 AA |
5080 | tbl->max_slots = max_slots; |
5081 | tbl->slots = slot; | |
5082 | tbl->highest_used_slotid = -1; /* no slot is currently used */ | |
5083 | spin_unlock(&tbl->slot_tbl_lock); | |
5084 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, | |
5085 | tbl, tbl->slots, tbl->max_slots); | |
5086 | out: | |
5087 | dprintk("<-- %s: return %d\n", __func__, ret); | |
5088 | return ret; | |
fc931582 AA |
5089 | } |
5090 | ||
050047ce RL |
5091 | /* |
5092 | * Initialize the forechannel and backchannel tables | |
5093 | */ | |
5094 | static int nfs4_init_slot_tables(struct nfs4_session *session) | |
5095 | { | |
f26468fb TM |
5096 | struct nfs4_slot_table *tbl; |
5097 | int status = 0; | |
050047ce | 5098 | |
f26468fb TM |
5099 | tbl = &session->fc_slot_table; |
5100 | if (tbl->slots == NULL) { | |
5101 | status = nfs4_init_slot_table(tbl, | |
5102 | session->fc_attrs.max_reqs, 1); | |
5103 | if (status) | |
5104 | return status; | |
5105 | } | |
050047ce | 5106 | |
f26468fb TM |
5107 | tbl = &session->bc_slot_table; |
5108 | if (tbl->slots == NULL) { | |
5109 | status = nfs4_init_slot_table(tbl, | |
5110 | session->bc_attrs.max_reqs, 0); | |
5111 | if (status) | |
5112 | nfs4_destroy_slot_tables(session); | |
5113 | } | |
f8625a6a RL |
5114 | |
5115 | return status; | |
557134a3 AA |
5116 | } |
5117 | ||
5118 | struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) | |
5119 | { | |
5120 | struct nfs4_session *session; | |
5121 | struct nfs4_slot_table *tbl; | |
5122 | ||
8535b2be | 5123 | session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); |
557134a3 AA |
5124 | if (!session) |
5125 | return NULL; | |
76db6d95 | 5126 | |
557134a3 | 5127 | tbl = &session->fc_slot_table; |
9dfdf404 | 5128 | tbl->highest_used_slotid = -1; |
557134a3 | 5129 | spin_lock_init(&tbl->slot_tbl_lock); |
689cf5c1 | 5130 | rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table"); |
42acd021 | 5131 | init_completion(&tbl->complete); |
f8625a6a RL |
5132 | |
5133 | tbl = &session->bc_slot_table; | |
9dfdf404 | 5134 | tbl->highest_used_slotid = -1; |
f8625a6a RL |
5135 | spin_lock_init(&tbl->slot_tbl_lock); |
5136 | rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table"); | |
42acd021 | 5137 | init_completion(&tbl->complete); |
f8625a6a | 5138 | |
1055d76d TM |
5139 | session->session_state = 1<<NFS4_SESSION_INITING; |
5140 | ||
557134a3 AA |
5141 | session->clp = clp; |
5142 | return session; | |
5143 | } | |
5144 | ||
5145 | void nfs4_destroy_session(struct nfs4_session *session) | |
5146 | { | |
5a0ffe54 AA |
5147 | nfs4_proc_destroy_session(session); |
5148 | dprintk("%s Destroy backchannel for xprt %p\n", | |
5149 | __func__, session->clp->cl_rpcclient->cl_xprt); | |
5150 | xprt_destroy_backchannel(session->clp->cl_rpcclient->cl_xprt, | |
5151 | NFS41_BC_MIN_CALLBACKS); | |
f8625a6a | 5152 | nfs4_destroy_slot_tables(session); |
557134a3 AA |
5153 | kfree(session); |
5154 | } | |
5155 | ||
fc931582 AA |
5156 | /* |
5157 | * Initialize the values to be used by the client in CREATE_SESSION | |
5158 | * If nfs4_init_session set the fore channel request and response sizes, | |
5159 | * use them. | |
5160 | * | |
5161 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
5162 | * always set csa_cachethis to FALSE because the current implementation | |
5163 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
5164 | */ | |
5165 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
5166 | { | |
5167 | struct nfs4_session *session = args->client->cl_session; | |
5168 | unsigned int mxrqst_sz = session->fc_attrs.max_rqst_sz, | |
5169 | mxresp_sz = session->fc_attrs.max_resp_sz; | |
5170 | ||
5171 | if (mxrqst_sz == 0) | |
5172 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
5173 | if (mxresp_sz == 0) | |
5174 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
5175 | /* Fore channel attributes */ | |
fc931582 AA |
5176 | args->fc_attrs.max_rqst_sz = mxrqst_sz; |
5177 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 AA |
5178 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
5179 | args->fc_attrs.max_reqs = session->clp->cl_rpcclient->cl_xprt->max_reqs; | |
5180 | ||
5181 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 5182 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
5183 | __func__, |
5184 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 5185 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
5186 | |
5187 | /* Back channel attributes */ | |
fc931582 AA |
5188 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
5189 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
5190 | args->bc_attrs.max_resp_sz_cached = 0; | |
5191 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
5192 | args->bc_attrs.max_reqs = 1; | |
5193 | ||
5194 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
5195 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
5196 | __func__, | |
5197 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
5198 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
5199 | args->bc_attrs.max_reqs); | |
5200 | } | |
5201 | ||
43c2e885 | 5202 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 5203 | { |
43c2e885 BF |
5204 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
5205 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
5206 | ||
43c2e885 BF |
5207 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
5208 | return -EINVAL; | |
5209 | /* | |
5210 | * Our requested max_ops is the minimum we need; we're not | |
5211 | * prepared to break up compounds into smaller pieces than that. | |
5212 | * So, no point even trying to continue if the server won't | |
5213 | * cooperate: | |
5214 | */ | |
5215 | if (rcvd->max_ops < sent->max_ops) | |
5216 | return -EINVAL; | |
5217 | if (rcvd->max_reqs == 0) | |
5218 | return -EINVAL; | |
5219 | return 0; | |
8d35301d AA |
5220 | } |
5221 | ||
43c2e885 BF |
5222 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
5223 | { | |
5224 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
5225 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 5226 | |
43c2e885 BF |
5227 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
5228 | return -EINVAL; | |
5229 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
5230 | return -EINVAL; | |
5231 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
5232 | return -EINVAL; | |
5233 | /* These would render the backchannel useless: */ | |
5234 | if (rcvd->max_ops == 0) | |
5235 | return -EINVAL; | |
5236 | if (rcvd->max_reqs == 0) | |
5237 | return -EINVAL; | |
5238 | return 0; | |
5239 | } | |
8d35301d | 5240 | |
8d35301d AA |
5241 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
5242 | struct nfs4_session *session) | |
5243 | { | |
43c2e885 | 5244 | int ret; |
8d35301d | 5245 | |
43c2e885 BF |
5246 | ret = nfs4_verify_fore_channel_attrs(args, session); |
5247 | if (ret) | |
5248 | return ret; | |
5249 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
5250 | } |
5251 | ||
fc931582 AA |
5252 | static int _nfs4_proc_create_session(struct nfs_client *clp) |
5253 | { | |
5254 | struct nfs4_session *session = clp->cl_session; | |
5255 | struct nfs41_create_session_args args = { | |
5256 | .client = clp, | |
5257 | .cb_program = NFS4_CALLBACK, | |
5258 | }; | |
5259 | struct nfs41_create_session_res res = { | |
5260 | .client = clp, | |
5261 | }; | |
5262 | struct rpc_message msg = { | |
5263 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
5264 | .rpc_argp = &args, | |
5265 | .rpc_resp = &res, | |
5266 | }; | |
5267 | int status; | |
5268 | ||
5269 | nfs4_init_channel_attrs(&args); | |
0f91421e | 5270 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 5271 | |
1bd714f2 | 5272 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
fc931582 | 5273 | |
8d35301d AA |
5274 | if (!status) |
5275 | /* Verify the session's negotiated channel_attrs values */ | |
5276 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
5277 | if (!status) { |
5278 | /* Increment the clientid slot sequence id */ | |
5279 | clp->cl_seqid++; | |
5280 | } | |
5281 | ||
5282 | return status; | |
5283 | } | |
5284 | ||
5285 | /* | |
5286 | * Issues a CREATE_SESSION operation to the server. | |
5287 | * It is the responsibility of the caller to verify the session is | |
5288 | * expired before calling this routine. | |
5289 | */ | |
f26468fb | 5290 | int nfs4_proc_create_session(struct nfs_client *clp) |
fc931582 AA |
5291 | { |
5292 | int status; | |
5293 | unsigned *ptr; | |
fc931582 AA |
5294 | struct nfs4_session *session = clp->cl_session; |
5295 | ||
5296 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
5297 | ||
fd954ae1 | 5298 | status = _nfs4_proc_create_session(clp); |
fc931582 AA |
5299 | if (status) |
5300 | goto out; | |
5301 | ||
f26468fb TM |
5302 | /* Init and reset the fore channel */ |
5303 | status = nfs4_init_slot_tables(session); | |
5304 | dprintk("slot table initialization returned %d\n", status); | |
5305 | if (status) | |
5306 | goto out; | |
5307 | status = nfs4_reset_slot_tables(session); | |
5308 | dprintk("slot table reset returned %d\n", status); | |
fc931582 AA |
5309 | if (status) |
5310 | goto out; | |
5311 | ||
5312 | ptr = (unsigned *)&session->sess_id.data[0]; | |
5313 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
5314 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
5315 | out: |
5316 | dprintk("<-- %s\n", __func__); | |
5317 | return status; | |
5318 | } | |
5319 | ||
0f3e66c6 AA |
5320 | /* |
5321 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
5322 | * The caller must serialize access to this routine. | |
5323 | */ | |
5324 | int nfs4_proc_destroy_session(struct nfs4_session *session) | |
5325 | { | |
5326 | int status = 0; | |
5327 | struct rpc_message msg; | |
5328 | ||
5329 | dprintk("--> nfs4_proc_destroy_session\n"); | |
5330 | ||
5331 | /* session is still being setup */ | |
5332 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
5333 | return status; | |
5334 | ||
5335 | msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION]; | |
5336 | msg.rpc_argp = session; | |
5337 | msg.rpc_resp = NULL; | |
5338 | msg.rpc_cred = NULL; | |
1bd714f2 | 5339 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
0f3e66c6 AA |
5340 | |
5341 | if (status) | |
5342 | printk(KERN_WARNING | |
5343 | "Got error %d from the server on DESTROY_SESSION. " | |
5344 | "Session has been destroyed regardless...\n", status); | |
5345 | ||
5346 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
5347 | return status; | |
5348 | } | |
5349 | ||
fccba804 TM |
5350 | int nfs4_init_session(struct nfs_server *server) |
5351 | { | |
5352 | struct nfs_client *clp = server->nfs_client; | |
2449ea2e | 5353 | struct nfs4_session *session; |
68bf05ef | 5354 | unsigned int rsize, wsize; |
fccba804 TM |
5355 | int ret; |
5356 | ||
5357 | if (!nfs4_has_session(clp)) | |
5358 | return 0; | |
5359 | ||
1055d76d TM |
5360 | session = clp->cl_session; |
5361 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5362 | return 0; | |
5363 | ||
68bf05ef AA |
5364 | rsize = server->rsize; |
5365 | if (rsize == 0) | |
5366 | rsize = NFS_MAX_FILE_IO_SIZE; | |
5367 | wsize = server->wsize; | |
5368 | if (wsize == 0) | |
5369 | wsize = NFS_MAX_FILE_IO_SIZE; | |
5370 | ||
68bf05ef AA |
5371 | session->fc_attrs.max_rqst_sz = wsize + nfs41_maxwrite_overhead; |
5372 | session->fc_attrs.max_resp_sz = rsize + nfs41_maxread_overhead; | |
2449ea2e | 5373 | |
fccba804 TM |
5374 | ret = nfs4_recover_expired_lease(server); |
5375 | if (!ret) | |
5376 | ret = nfs4_check_client_ready(clp); | |
5377 | return ret; | |
5378 | } | |
5379 | ||
d83217c1 AA |
5380 | int nfs4_init_ds_session(struct nfs_client *clp) |
5381 | { | |
5382 | struct nfs4_session *session = clp->cl_session; | |
5383 | int ret; | |
5384 | ||
5385 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5386 | return 0; | |
5387 | ||
5388 | ret = nfs4_client_recover_expired_lease(clp); | |
5389 | if (!ret) | |
5390 | /* Test for the DS role */ | |
5391 | if (!is_ds_client(clp)) | |
5392 | ret = -ENODEV; | |
5393 | if (!ret) | |
5394 | ret = nfs4_check_client_ready(clp); | |
5395 | return ret; | |
5396 | ||
5397 | } | |
5398 | EXPORT_SYMBOL_GPL(nfs4_init_ds_session); | |
5399 | ||
5400 | ||
fc01cea9 AA |
5401 | /* |
5402 | * Renew the cl_session lease. | |
5403 | */ | |
d5f8d3fe TM |
5404 | struct nfs4_sequence_data { |
5405 | struct nfs_client *clp; | |
5406 | struct nfs4_sequence_args args; | |
5407 | struct nfs4_sequence_res res; | |
5408 | }; | |
5409 | ||
dc96aef9 AB |
5410 | static void nfs41_sequence_release(void *data) |
5411 | { | |
d5f8d3fe TM |
5412 | struct nfs4_sequence_data *calldata = data; |
5413 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 5414 | |
7135840f AB |
5415 | if (atomic_read(&clp->cl_count) > 1) |
5416 | nfs4_schedule_state_renewal(clp); | |
5417 | nfs_put_client(clp); | |
d5f8d3fe | 5418 | kfree(calldata); |
dc96aef9 AB |
5419 | } |
5420 | ||
aa5190d0 TM |
5421 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5422 | { | |
5423 | switch(task->tk_status) { | |
5424 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5425 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5426 | return -EAGAIN; | |
5427 | default: | |
0400a6b0 | 5428 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5429 | } |
5430 | return 0; | |
5431 | } | |
5432 | ||
dc96aef9 | 5433 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 5434 | { |
d5f8d3fe TM |
5435 | struct nfs4_sequence_data *calldata = data; |
5436 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 5437 | |
14516c3a TM |
5438 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
5439 | return; | |
fc01cea9 AA |
5440 | |
5441 | if (task->tk_status < 0) { | |
5442 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
5443 | if (atomic_read(&clp->cl_count) == 1) |
5444 | goto out; | |
fc01cea9 | 5445 | |
aa5190d0 TM |
5446 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
5447 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
5448 | return; |
5449 | } | |
5450 | } | |
fc01cea9 | 5451 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 5452 | out: |
fc01cea9 AA |
5453 | dprintk("<-- %s\n", __func__); |
5454 | } | |
5455 | ||
5456 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
5457 | { | |
d5f8d3fe TM |
5458 | struct nfs4_sequence_data *calldata = data; |
5459 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
5460 | struct nfs4_sequence_args *args; |
5461 | struct nfs4_sequence_res *res; | |
5462 | ||
fc01cea9 AA |
5463 | args = task->tk_msg.rpc_argp; |
5464 | res = task->tk_msg.rpc_resp; | |
5465 | ||
035168ab | 5466 | if (nfs41_setup_sequence(clp->cl_session, args, res, 0, task)) |
fc01cea9 AA |
5467 | return; |
5468 | rpc_call_start(task); | |
5469 | } | |
5470 | ||
5471 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
5472 | .rpc_call_done = nfs41_sequence_call_done, | |
5473 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 5474 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
5475 | }; |
5476 | ||
71ac6da9 | 5477 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) |
fc01cea9 | 5478 | { |
d5f8d3fe | 5479 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
5480 | struct rpc_message msg = { |
5481 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
5482 | .rpc_cred = cred, | |
5483 | }; | |
71ac6da9 TM |
5484 | struct rpc_task_setup task_setup_data = { |
5485 | .rpc_client = clp->cl_rpcclient, | |
5486 | .rpc_message = &msg, | |
5487 | .callback_ops = &nfs41_sequence_ops, | |
5488 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT, | |
5489 | }; | |
fc01cea9 | 5490 | |
7135840f | 5491 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 5492 | return ERR_PTR(-EIO); |
dfb4f309 | 5493 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 5494 | if (calldata == NULL) { |
7135840f | 5495 | nfs_put_client(clp); |
71ac6da9 | 5496 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 5497 | } |
d5f8d3fe TM |
5498 | msg.rpc_argp = &calldata->args; |
5499 | msg.rpc_resp = &calldata->res; | |
5500 | calldata->clp = clp; | |
71ac6da9 | 5501 | task_setup_data.callback_data = calldata; |
fc01cea9 | 5502 | |
71ac6da9 TM |
5503 | return rpc_run_task(&task_setup_data); |
5504 | } | |
5505 | ||
5506 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5507 | { | |
5508 | struct rpc_task *task; | |
5509 | int ret = 0; | |
5510 | ||
5511 | task = _nfs41_proc_sequence(clp, cred); | |
5512 | if (IS_ERR(task)) | |
5513 | ret = PTR_ERR(task); | |
5514 | else | |
bf294b41 | 5515 | rpc_put_task_async(task); |
71ac6da9 TM |
5516 | dprintk("<-- %s status=%d\n", __func__, ret); |
5517 | return ret; | |
5518 | } | |
5519 | ||
5520 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5521 | { | |
5522 | struct rpc_task *task; | |
5523 | int ret; | |
5524 | ||
5525 | task = _nfs41_proc_sequence(clp, cred); | |
5526 | if (IS_ERR(task)) { | |
5527 | ret = PTR_ERR(task); | |
5528 | goto out; | |
5529 | } | |
5530 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
5531 | if (!ret) { |
5532 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
5533 | ||
5534 | if (task->tk_status == 0) | |
5535 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 5536 | ret = task->tk_status; |
b4410c2f | 5537 | } |
71ac6da9 TM |
5538 | rpc_put_task(task); |
5539 | out: | |
5540 | dprintk("<-- %s status=%d\n", __func__, ret); | |
5541 | return ret; | |
fc01cea9 AA |
5542 | } |
5543 | ||
fce5c838 RL |
5544 | struct nfs4_reclaim_complete_data { |
5545 | struct nfs_client *clp; | |
5546 | struct nfs41_reclaim_complete_args arg; | |
5547 | struct nfs41_reclaim_complete_res res; | |
5548 | }; | |
5549 | ||
5550 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
5551 | { | |
5552 | struct nfs4_reclaim_complete_data *calldata = data; | |
5553 | ||
b257957e | 5554 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
035168ab TM |
5555 | if (nfs41_setup_sequence(calldata->clp->cl_session, |
5556 | &calldata->arg.seq_args, | |
fce5c838 RL |
5557 | &calldata->res.seq_res, 0, task)) |
5558 | return; | |
5559 | ||
5560 | rpc_call_start(task); | |
5561 | } | |
5562 | ||
aa5190d0 TM |
5563 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5564 | { | |
5565 | switch(task->tk_status) { | |
5566 | case 0: | |
5567 | case -NFS4ERR_COMPLETE_ALREADY: | |
5568 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
5569 | break; | |
5570 | case -NFS4ERR_DELAY: | |
aa5190d0 | 5571 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
5572 | /* fall through */ |
5573 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
5574 | return -EAGAIN; |
5575 | default: | |
0400a6b0 | 5576 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5577 | } |
5578 | return 0; | |
5579 | } | |
5580 | ||
fce5c838 RL |
5581 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
5582 | { | |
5583 | struct nfs4_reclaim_complete_data *calldata = data; | |
5584 | struct nfs_client *clp = calldata->clp; | |
5585 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
5586 | ||
5587 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5588 | if (!nfs41_sequence_done(task, res)) |
5589 | return; | |
fce5c838 | 5590 | |
aa5190d0 TM |
5591 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
5592 | rpc_restart_call_prepare(task); | |
5593 | return; | |
5594 | } | |
fce5c838 RL |
5595 | dprintk("<-- %s\n", __func__); |
5596 | } | |
5597 | ||
5598 | static void nfs4_free_reclaim_complete_data(void *data) | |
5599 | { | |
5600 | struct nfs4_reclaim_complete_data *calldata = data; | |
5601 | ||
5602 | kfree(calldata); | |
5603 | } | |
5604 | ||
5605 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
5606 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
5607 | .rpc_call_done = nfs4_reclaim_complete_done, | |
5608 | .rpc_release = nfs4_free_reclaim_complete_data, | |
5609 | }; | |
5610 | ||
5611 | /* | |
5612 | * Issue a global reclaim complete. | |
5613 | */ | |
5614 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
5615 | { | |
5616 | struct nfs4_reclaim_complete_data *calldata; | |
5617 | struct rpc_task *task; | |
5618 | struct rpc_message msg = { | |
5619 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
5620 | }; | |
5621 | struct rpc_task_setup task_setup_data = { | |
5622 | .rpc_client = clp->cl_rpcclient, | |
5623 | .rpc_message = &msg, | |
5624 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
5625 | .flags = RPC_TASK_ASYNC, | |
5626 | }; | |
5627 | int status = -ENOMEM; | |
5628 | ||
5629 | dprintk("--> %s\n", __func__); | |
8535b2be | 5630 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
5631 | if (calldata == NULL) |
5632 | goto out; | |
5633 | calldata->clp = clp; | |
5634 | calldata->arg.one_fs = 0; | |
fce5c838 RL |
5635 | |
5636 | msg.rpc_argp = &calldata->arg; | |
5637 | msg.rpc_resp = &calldata->res; | |
5638 | task_setup_data.callback_data = calldata; | |
5639 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 5640 | if (IS_ERR(task)) { |
fce5c838 | 5641 | status = PTR_ERR(task); |
acf82b85 DC |
5642 | goto out; |
5643 | } | |
c34c32ea AA |
5644 | status = nfs4_wait_for_completion_rpc_task(task); |
5645 | if (status == 0) | |
5646 | status = task->tk_status; | |
fce5c838 | 5647 | rpc_put_task(task); |
acf82b85 | 5648 | return 0; |
fce5c838 RL |
5649 | out: |
5650 | dprintk("<-- %s status=%d\n", __func__, status); | |
5651 | return status; | |
5652 | } | |
b1f69b75 AA |
5653 | |
5654 | static void | |
5655 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
5656 | { | |
5657 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 5658 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
b1f69b75 AA |
5659 | |
5660 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
5661 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
5662 | * right now covering the LAYOUTGET we are about to send. | |
5663 | * However, that is not so catastrophic, and there seems | |
5664 | * to be no way to prevent it completely. | |
5665 | */ | |
b1f69b75 AA |
5666 | if (nfs4_setup_sequence(server, &lgp->args.seq_args, |
5667 | &lgp->res.seq_res, 0, task)) | |
5668 | return; | |
cf7d63f1 FI |
5669 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
5670 | NFS_I(lgp->args.inode)->layout, | |
5671 | lgp->args.ctx->state)) { | |
5672 | rpc_exit(task, NFS4_OK); | |
5673 | return; | |
5674 | } | |
b1f69b75 AA |
5675 | rpc_call_start(task); |
5676 | } | |
5677 | ||
5678 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
5679 | { | |
5680 | struct nfs4_layoutget *lgp = calldata; | |
5681 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5682 | ||
5683 | dprintk("--> %s\n", __func__); | |
5684 | ||
5685 | if (!nfs4_sequence_done(task, &lgp->res.seq_res)) | |
5686 | return; | |
5687 | ||
5688 | switch (task->tk_status) { | |
5689 | case 0: | |
5690 | break; | |
5691 | case -NFS4ERR_LAYOUTTRYLATER: | |
5692 | case -NFS4ERR_RECALLCONFLICT: | |
5693 | task->tk_status = -NFS4ERR_DELAY; | |
5694 | /* Fall through */ | |
5695 | default: | |
5696 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
5697 | rpc_restart_call_prepare(task); | |
5698 | return; | |
5699 | } | |
5700 | } | |
b1f69b75 AA |
5701 | dprintk("<-- %s\n", __func__); |
5702 | } | |
5703 | ||
5704 | static void nfs4_layoutget_release(void *calldata) | |
5705 | { | |
5706 | struct nfs4_layoutget *lgp = calldata; | |
5707 | ||
5708 | dprintk("--> %s\n", __func__); | |
b1f69b75 AA |
5709 | put_nfs_open_context(lgp->args.ctx); |
5710 | kfree(calldata); | |
5711 | dprintk("<-- %s\n", __func__); | |
5712 | } | |
5713 | ||
5714 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
5715 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
5716 | .rpc_call_done = nfs4_layoutget_done, | |
5717 | .rpc_release = nfs4_layoutget_release, | |
5718 | }; | |
5719 | ||
5720 | int nfs4_proc_layoutget(struct nfs4_layoutget *lgp) | |
5721 | { | |
5722 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5723 | struct rpc_task *task; | |
5724 | struct rpc_message msg = { | |
5725 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
5726 | .rpc_argp = &lgp->args, | |
5727 | .rpc_resp = &lgp->res, | |
5728 | }; | |
5729 | struct rpc_task_setup task_setup_data = { | |
5730 | .rpc_client = server->client, | |
5731 | .rpc_message = &msg, | |
5732 | .callback_ops = &nfs4_layoutget_call_ops, | |
5733 | .callback_data = lgp, | |
5734 | .flags = RPC_TASK_ASYNC, | |
5735 | }; | |
5736 | int status = 0; | |
5737 | ||
5738 | dprintk("--> %s\n", __func__); | |
5739 | ||
35124a09 | 5740 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 AA |
5741 | lgp->res.seq_res.sr_slot = NULL; |
5742 | task = rpc_run_task(&task_setup_data); | |
5743 | if (IS_ERR(task)) | |
5744 | return PTR_ERR(task); | |
5745 | status = nfs4_wait_for_completion_rpc_task(task); | |
c31663d4 FI |
5746 | if (status == 0) |
5747 | status = task->tk_status; | |
5748 | if (status == 0) | |
5749 | status = pnfs_layout_process(lgp); | |
b1f69b75 AA |
5750 | rpc_put_task(task); |
5751 | dprintk("<-- %s status=%d\n", __func__, status); | |
5752 | return status; | |
5753 | } | |
5754 | ||
cbe82603 BH |
5755 | static void |
5756 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
5757 | { | |
5758 | struct nfs4_layoutreturn *lrp = calldata; | |
5759 | ||
5760 | dprintk("--> %s\n", __func__); | |
5761 | if (nfs41_setup_sequence(lrp->clp->cl_session, &lrp->args.seq_args, | |
5762 | &lrp->res.seq_res, 0, task)) | |
5763 | return; | |
5764 | rpc_call_start(task); | |
5765 | } | |
5766 | ||
5767 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
5768 | { | |
5769 | struct nfs4_layoutreturn *lrp = calldata; | |
5770 | struct nfs_server *server; | |
a56aaa02 | 5771 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
5772 | |
5773 | dprintk("--> %s\n", __func__); | |
5774 | ||
5775 | if (!nfs4_sequence_done(task, &lrp->res.seq_res)) | |
5776 | return; | |
5777 | ||
5778 | server = NFS_SERVER(lrp->args.inode); | |
5779 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
5780 | nfs_restart_rpc(task, lrp->clp); | |
5781 | return; | |
5782 | } | |
a2e1d4f2 | 5783 | spin_lock(&lo->plh_inode->i_lock); |
cbe82603 | 5784 | if (task->tk_status == 0) { |
cbe82603 | 5785 | if (lrp->res.lrs_present) { |
cbe82603 | 5786 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); |
cbe82603 BH |
5787 | } else |
5788 | BUG_ON(!list_empty(&lo->plh_segs)); | |
5789 | } | |
a2e1d4f2 FI |
5790 | lo->plh_block_lgets--; |
5791 | spin_unlock(&lo->plh_inode->i_lock); | |
cbe82603 BH |
5792 | dprintk("<-- %s\n", __func__); |
5793 | } | |
5794 | ||
5795 | static void nfs4_layoutreturn_release(void *calldata) | |
5796 | { | |
5797 | struct nfs4_layoutreturn *lrp = calldata; | |
5798 | ||
5799 | dprintk("--> %s\n", __func__); | |
a56aaa02 | 5800 | put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
5801 | kfree(calldata); |
5802 | dprintk("<-- %s\n", __func__); | |
5803 | } | |
5804 | ||
5805 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
5806 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
5807 | .rpc_call_done = nfs4_layoutreturn_done, | |
5808 | .rpc_release = nfs4_layoutreturn_release, | |
5809 | }; | |
5810 | ||
5811 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
5812 | { | |
5813 | struct rpc_task *task; | |
5814 | struct rpc_message msg = { | |
5815 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
5816 | .rpc_argp = &lrp->args, | |
5817 | .rpc_resp = &lrp->res, | |
5818 | }; | |
5819 | struct rpc_task_setup task_setup_data = { | |
5820 | .rpc_client = lrp->clp->cl_rpcclient, | |
5821 | .rpc_message = &msg, | |
5822 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
5823 | .callback_data = lrp, | |
5824 | }; | |
5825 | int status; | |
5826 | ||
5827 | dprintk("--> %s\n", __func__); | |
5828 | task = rpc_run_task(&task_setup_data); | |
5829 | if (IS_ERR(task)) | |
5830 | return PTR_ERR(task); | |
5831 | status = task->tk_status; | |
5832 | dprintk("<-- %s status=%d\n", __func__, status); | |
5833 | rpc_put_task(task); | |
5834 | return status; | |
5835 | } | |
5836 | ||
7f11d8d3 AA |
5837 | /* |
5838 | * Retrieve the list of Data Server devices from the MDS. | |
5839 | */ | |
5840 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
5841 | const struct nfs_fh *fh, | |
5842 | struct pnfs_devicelist *devlist) | |
5843 | { | |
5844 | struct nfs4_getdevicelist_args args = { | |
5845 | .fh = fh, | |
5846 | .layoutclass = server->pnfs_curr_ld->id, | |
5847 | }; | |
5848 | struct nfs4_getdevicelist_res res = { | |
5849 | .devlist = devlist, | |
5850 | }; | |
5851 | struct rpc_message msg = { | |
5852 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
5853 | .rpc_argp = &args, | |
5854 | .rpc_resp = &res, | |
5855 | }; | |
5856 | int status; | |
5857 | ||
5858 | dprintk("--> %s\n", __func__); | |
5859 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
5860 | &res.seq_res, 0); | |
5861 | dprintk("<-- %s status=%d\n", __func__, status); | |
5862 | return status; | |
5863 | } | |
5864 | ||
5865 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
5866 | const struct nfs_fh *fh, | |
5867 | struct pnfs_devicelist *devlist) | |
5868 | { | |
5869 | struct nfs4_exception exception = { }; | |
5870 | int err; | |
5871 | ||
5872 | do { | |
5873 | err = nfs4_handle_exception(server, | |
5874 | _nfs4_getdevicelist(server, fh, devlist), | |
5875 | &exception); | |
5876 | } while (exception.retry); | |
5877 | ||
5878 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
5879 | err, devlist->num_devs); | |
5880 | ||
5881 | return err; | |
5882 | } | |
5883 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
5884 | ||
b1f69b75 AA |
5885 | static int |
5886 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
5887 | { | |
5888 | struct nfs4_getdeviceinfo_args args = { | |
5889 | .pdev = pdev, | |
5890 | }; | |
5891 | struct nfs4_getdeviceinfo_res res = { | |
5892 | .pdev = pdev, | |
5893 | }; | |
5894 | struct rpc_message msg = { | |
5895 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
5896 | .rpc_argp = &args, | |
5897 | .rpc_resp = &res, | |
5898 | }; | |
5899 | int status; | |
5900 | ||
5901 | dprintk("--> %s\n", __func__); | |
7c513058 | 5902 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
5903 | dprintk("<-- %s status=%d\n", __func__, status); |
5904 | ||
5905 | return status; | |
5906 | } | |
5907 | ||
5908 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
5909 | { | |
5910 | struct nfs4_exception exception = { }; | |
5911 | int err; | |
5912 | ||
5913 | do { | |
5914 | err = nfs4_handle_exception(server, | |
5915 | _nfs4_proc_getdeviceinfo(server, pdev), | |
5916 | &exception); | |
5917 | } while (exception.retry); | |
5918 | return err; | |
5919 | } | |
5920 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
5921 | ||
863a3c6c AA |
5922 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
5923 | { | |
5924 | struct nfs4_layoutcommit_data *data = calldata; | |
5925 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
5926 | ||
5927 | if (nfs4_setup_sequence(server, &data->args.seq_args, | |
5928 | &data->res.seq_res, 1, task)) | |
5929 | return; | |
5930 | rpc_call_start(task); | |
5931 | } | |
5932 | ||
5933 | static void | |
5934 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
5935 | { | |
5936 | struct nfs4_layoutcommit_data *data = calldata; | |
5937 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
5938 | ||
5939 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
5940 | return; | |
5941 | ||
5942 | switch (task->tk_status) { /* Just ignore these failures */ | |
5943 | case NFS4ERR_DELEG_REVOKED: /* layout was recalled */ | |
5944 | case NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
5945 | case NFS4ERR_BADLAYOUT: /* no layout */ | |
5946 | case NFS4ERR_GRACE: /* loca_recalim always false */ | |
5947 | task->tk_status = 0; | |
5948 | } | |
5949 | ||
5950 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
5951 | nfs_restart_rpc(task, server->nfs_client); | |
5952 | return; | |
5953 | } | |
5954 | ||
5955 | if (task->tk_status == 0) | |
5956 | nfs_post_op_update_inode_force_wcc(data->args.inode, | |
5957 | data->res.fattr); | |
5958 | } | |
5959 | ||
5960 | static void nfs4_layoutcommit_release(void *calldata) | |
5961 | { | |
5962 | struct nfs4_layoutcommit_data *data = calldata; | |
a9bae566 | 5963 | struct pnfs_layout_segment *lseg, *tmp; |
863a3c6c AA |
5964 | |
5965 | /* Matched by references in pnfs_set_layoutcommit */ | |
a9bae566 PT |
5966 | list_for_each_entry_safe(lseg, tmp, &data->lseg_list, pls_lc_list) { |
5967 | list_del_init(&lseg->pls_lc_list); | |
5968 | if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT, | |
5969 | &lseg->pls_flags)) | |
5970 | put_lseg(lseg); | |
5971 | } | |
863a3c6c AA |
5972 | put_rpccred(data->cred); |
5973 | kfree(data); | |
5974 | } | |
5975 | ||
5976 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
5977 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
5978 | .rpc_call_done = nfs4_layoutcommit_done, | |
5979 | .rpc_release = nfs4_layoutcommit_release, | |
5980 | }; | |
5981 | ||
5982 | int | |
ef311537 | 5983 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
5984 | { |
5985 | struct rpc_message msg = { | |
5986 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
5987 | .rpc_argp = &data->args, | |
5988 | .rpc_resp = &data->res, | |
5989 | .rpc_cred = data->cred, | |
5990 | }; | |
5991 | struct rpc_task_setup task_setup_data = { | |
5992 | .task = &data->task, | |
5993 | .rpc_client = NFS_CLIENT(data->args.inode), | |
5994 | .rpc_message = &msg, | |
5995 | .callback_ops = &nfs4_layoutcommit_ops, | |
5996 | .callback_data = data, | |
5997 | .flags = RPC_TASK_ASYNC, | |
5998 | }; | |
5999 | struct rpc_task *task; | |
6000 | int status = 0; | |
6001 | ||
6002 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
6003 | "lbw: %llu inode %lu\n", | |
6004 | data->task.tk_pid, sync, | |
6005 | data->args.lastbytewritten, | |
6006 | data->args.inode->i_ino); | |
6007 | ||
6008 | task = rpc_run_task(&task_setup_data); | |
6009 | if (IS_ERR(task)) | |
6010 | return PTR_ERR(task); | |
ef311537 | 6011 | if (sync == false) |
863a3c6c AA |
6012 | goto out; |
6013 | status = nfs4_wait_for_completion_rpc_task(task); | |
6014 | if (status != 0) | |
6015 | goto out; | |
6016 | status = task->tk_status; | |
6017 | out: | |
6018 | dprintk("%s: status %d\n", __func__, status); | |
6019 | rpc_put_task(task); | |
6020 | return status; | |
6021 | } | |
fca78d6d BS |
6022 | |
6023 | static int | |
6024 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6025 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6026 | { | |
6027 | struct nfs41_secinfo_no_name_args args = { | |
6028 | .style = SECINFO_STYLE_CURRENT_FH, | |
6029 | }; | |
6030 | struct nfs4_secinfo_res res = { | |
6031 | .flavors = flavors, | |
6032 | }; | |
6033 | struct rpc_message msg = { | |
6034 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
6035 | .rpc_argp = &args, | |
6036 | .rpc_resp = &res, | |
6037 | }; | |
6038 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); | |
6039 | } | |
6040 | ||
6041 | static int | |
6042 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6043 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6044 | { | |
6045 | struct nfs4_exception exception = { }; | |
6046 | int err; | |
6047 | do { | |
6048 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6049 | switch (err) { | |
6050 | case 0: | |
6051 | case -NFS4ERR_WRONGSEC: | |
6052 | case -NFS4ERR_NOTSUPP: | |
6053 | break; | |
6054 | default: | |
6055 | err = nfs4_handle_exception(server, err, &exception); | |
6056 | } | |
6057 | } while (exception.retry); | |
6058 | return err; | |
6059 | } | |
6060 | ||
6061 | static int | |
6062 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
6063 | struct nfs_fsinfo *info) | |
6064 | { | |
6065 | int err; | |
6066 | struct page *page; | |
6067 | rpc_authflavor_t flavor; | |
6068 | struct nfs4_secinfo_flavors *flavors; | |
6069 | ||
6070 | page = alloc_page(GFP_KERNEL); | |
6071 | if (!page) { | |
6072 | err = -ENOMEM; | |
6073 | goto out; | |
6074 | } | |
6075 | ||
6076 | flavors = page_address(page); | |
6077 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6078 | ||
6079 | /* | |
6080 | * Fall back on "guess and check" method if | |
6081 | * the server doesn't support SECINFO_NO_NAME | |
6082 | */ | |
6083 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
6084 | err = nfs4_find_root_sec(server, fhandle, info); | |
6085 | goto out_freepage; | |
6086 | } | |
6087 | if (err) | |
6088 | goto out_freepage; | |
6089 | ||
6090 | flavor = nfs_find_best_sec(flavors); | |
6091 | if (err == 0) | |
6092 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
6093 | ||
6094 | out_freepage: | |
6095 | put_page(page); | |
6096 | if (err == -EACCES) | |
6097 | return -EPERM; | |
6098 | out: | |
6099 | return err; | |
6100 | } | |
7d974794 BS |
6101 | static int _nfs41_test_stateid(struct nfs_server *server, struct nfs4_state *state) |
6102 | { | |
6103 | int status; | |
6104 | struct nfs41_test_stateid_args args = { | |
6105 | .stateid = &state->stateid, | |
6106 | }; | |
6107 | struct nfs41_test_stateid_res res; | |
6108 | struct rpc_message msg = { | |
6109 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
6110 | .rpc_argp = &args, | |
6111 | .rpc_resp = &res, | |
6112 | }; | |
6113 | args.seq_args.sa_session = res.seq_res.sr_session = NULL; | |
6114 | status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 0, 1); | |
6115 | return status; | |
6116 | } | |
6117 | ||
6118 | static int nfs41_test_stateid(struct nfs_server *server, struct nfs4_state *state) | |
6119 | { | |
6120 | struct nfs4_exception exception = { }; | |
6121 | int err; | |
6122 | do { | |
6123 | err = nfs4_handle_exception(server, | |
6124 | _nfs41_test_stateid(server, state), | |
6125 | &exception); | |
6126 | } while (exception.retry); | |
6127 | return err; | |
6128 | } | |
9aeda35f BS |
6129 | |
6130 | static int _nfs4_free_stateid(struct nfs_server *server, struct nfs4_state *state) | |
6131 | { | |
6132 | int status; | |
6133 | struct nfs41_free_stateid_args args = { | |
6134 | .stateid = &state->stateid, | |
6135 | }; | |
6136 | struct nfs41_free_stateid_res res; | |
6137 | struct rpc_message msg = { | |
6138 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
6139 | .rpc_argp = &args, | |
6140 | .rpc_resp = &res, | |
6141 | }; | |
6142 | ||
6143 | args.seq_args.sa_session = res.seq_res.sr_session = NULL; | |
6144 | status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 0, 1); | |
6145 | return status; | |
6146 | } | |
6147 | ||
6148 | static int nfs41_free_stateid(struct nfs_server *server, struct nfs4_state *state) | |
6149 | { | |
6150 | struct nfs4_exception exception = { }; | |
6151 | int err; | |
6152 | do { | |
6153 | err = nfs4_handle_exception(server, | |
6154 | _nfs4_free_stateid(server, state), | |
6155 | &exception); | |
6156 | } while (exception.retry); | |
6157 | return err; | |
6158 | } | |
557134a3 AA |
6159 | #endif /* CONFIG_NFS_V4_1 */ |
6160 | ||
591d71cb | 6161 | struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 6162 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 6163 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
6164 | .recover_open = nfs4_open_reclaim, |
6165 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 6166 | .establish_clid = nfs4_init_clientid, |
90a16617 | 6167 | .get_clid_cred = nfs4_get_setclientid_cred, |
1da177e4 LT |
6168 | }; |
6169 | ||
591d71cb AA |
6170 | #if defined(CONFIG_NFS_V4_1) |
6171 | struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { | |
6172 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, | |
6173 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
6174 | .recover_open = nfs4_open_reclaim, | |
6175 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 6176 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6177 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 6178 | .reclaim_complete = nfs41_proc_reclaim_complete, |
591d71cb AA |
6179 | }; |
6180 | #endif /* CONFIG_NFS_V4_1 */ | |
6181 | ||
6182 | struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { | |
6183 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, | |
6184 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
6185 | .recover_open = nfs4_open_expired, | |
6186 | .recover_lock = nfs4_lock_expired, | |
6187 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 6188 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
6189 | }; |
6190 | ||
6191 | #if defined(CONFIG_NFS_V4_1) | |
6192 | struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { | |
7eff03ae | 6193 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 6194 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
6195 | .recover_open = nfs41_open_expired, |
6196 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 6197 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6198 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 6199 | }; |
591d71cb | 6200 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 6201 | |
29fba38b BH |
6202 | struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
6203 | .sched_state_renewal = nfs4_proc_async_renew, | |
a7b72103 | 6204 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 6205 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
6206 | }; |
6207 | ||
6208 | #if defined(CONFIG_NFS_V4_1) | |
6209 | struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { | |
6210 | .sched_state_renewal = nfs41_proc_async_sequence, | |
a7b72103 | 6211 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 6212 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
6213 | }; |
6214 | #endif | |
6215 | ||
97dc1359 TM |
6216 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
6217 | .minor_version = 0, | |
6218 | .call_sync = _nfs4_call_sync, | |
e047a10c | 6219 | .validate_stateid = nfs4_validate_delegation_stateid, |
fca78d6d | 6220 | .find_root_sec = nfs4_find_root_sec, |
c48f4f35 TM |
6221 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
6222 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
6223 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
6224 | }; |
6225 | ||
6226 | #if defined(CONFIG_NFS_V4_1) | |
6227 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
6228 | .minor_version = 1, | |
6229 | .call_sync = _nfs4_call_sync_session, | |
e047a10c | 6230 | .validate_stateid = nfs41_validate_delegation_stateid, |
fca78d6d | 6231 | .find_root_sec = nfs41_find_root_sec, |
c48f4f35 TM |
6232 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
6233 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
6234 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
6235 | }; |
6236 | #endif | |
6237 | ||
97dc1359 TM |
6238 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
6239 | [0] = &nfs_v4_0_minor_ops, | |
6240 | #if defined(CONFIG_NFS_V4_1) | |
6241 | [1] = &nfs_v4_1_minor_ops, | |
6242 | #endif | |
6243 | }; | |
6244 | ||
92e1d5be | 6245 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
6246 | .permission = nfs_permission, |
6247 | .getattr = nfs_getattr, | |
6248 | .setattr = nfs_setattr, | |
64c2ce8b AK |
6249 | .getxattr = generic_getxattr, |
6250 | .setxattr = generic_setxattr, | |
6251 | .listxattr = generic_listxattr, | |
6252 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
6253 | }; |
6254 | ||
509de811 | 6255 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
6256 | .version = 4, /* protocol version */ |
6257 | .dentry_ops = &nfs4_dentry_operations, | |
6258 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 6259 | .file_inode_ops = &nfs4_file_inode_operations, |
1da177e4 LT |
6260 | .getroot = nfs4_proc_get_root, |
6261 | .getattr = nfs4_proc_getattr, | |
6262 | .setattr = nfs4_proc_setattr, | |
2b3de441 | 6263 | .lookupfh = nfs4_proc_lookupfh, |
1da177e4 LT |
6264 | .lookup = nfs4_proc_lookup, |
6265 | .access = nfs4_proc_access, | |
6266 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
6267 | .create = nfs4_proc_create, |
6268 | .remove = nfs4_proc_remove, | |
6269 | .unlink_setup = nfs4_proc_unlink_setup, | |
6270 | .unlink_done = nfs4_proc_unlink_done, | |
6271 | .rename = nfs4_proc_rename, | |
d3d4152a JL |
6272 | .rename_setup = nfs4_proc_rename_setup, |
6273 | .rename_done = nfs4_proc_rename_done, | |
1da177e4 LT |
6274 | .link = nfs4_proc_link, |
6275 | .symlink = nfs4_proc_symlink, | |
6276 | .mkdir = nfs4_proc_mkdir, | |
6277 | .rmdir = nfs4_proc_remove, | |
6278 | .readdir = nfs4_proc_readdir, | |
6279 | .mknod = nfs4_proc_mknod, | |
6280 | .statfs = nfs4_proc_statfs, | |
6281 | .fsinfo = nfs4_proc_fsinfo, | |
6282 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 6283 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
6284 | .decode_dirent = nfs4_decode_dirent, |
6285 | .read_setup = nfs4_proc_read_setup, | |
ec06c096 | 6286 | .read_done = nfs4_read_done, |
1da177e4 | 6287 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 6288 | .write_done = nfs4_write_done, |
1da177e4 | 6289 | .commit_setup = nfs4_proc_commit_setup, |
788e7a89 | 6290 | .commit_done = nfs4_commit_done, |
1da177e4 | 6291 | .lock = nfs4_proc_lock, |
e50a1c2e | 6292 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 6293 | .close_context = nfs4_close_context, |
2b484297 | 6294 | .open_context = nfs4_atomic_open, |
45a52a02 | 6295 | .init_client = nfs4_init_client, |
5a5ea0d4 | 6296 | .secinfo = nfs4_proc_secinfo, |
1da177e4 LT |
6297 | }; |
6298 | ||
64c2ce8b AK |
6299 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
6300 | .prefix = XATTR_NAME_NFSV4_ACL, | |
6301 | .list = nfs4_xattr_list_nfs4_acl, | |
6302 | .get = nfs4_xattr_get_nfs4_acl, | |
6303 | .set = nfs4_xattr_set_nfs4_acl, | |
6304 | }; | |
6305 | ||
6306 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
6307 | &nfs4_xattr_nfs4_acl_handler, | |
6308 | NULL | |
6309 | }; | |
6310 | ||
1da177e4 LT |
6311 | /* |
6312 | * Local variables: | |
6313 | * c-basic-offset: 8 | |
6314 | * End: | |
6315 | */ |