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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/nfs/nfs4proc.c | |
3 | * | |
4 | * Client-side procedure declarations for NFSv4. | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
36 | */ | |
37 | ||
38 | #include <linux/mm.h> | |
1da177e4 LT |
39 | #include <linux/delay.h> |
40 | #include <linux/errno.h> | |
41 | #include <linux/string.h> | |
652f89f6 TM |
42 | #include <linux/ratelimit.h> |
43 | #include <linux/printk.h> | |
5a0e3ad6 | 44 | #include <linux/slab.h> |
1da177e4 | 45 | #include <linux/sunrpc/clnt.h> |
8f70e95f | 46 | #include <linux/sunrpc/gss_api.h> |
1da177e4 LT |
47 | #include <linux/nfs.h> |
48 | #include <linux/nfs4.h> | |
49 | #include <linux/nfs_fs.h> | |
50 | #include <linux/nfs_page.h> | |
9b7160c5 | 51 | #include <linux/nfs_mount.h> |
1da177e4 | 52 | #include <linux/namei.h> |
02a913a7 | 53 | #include <linux/mount.h> |
99fe60d0 | 54 | #include <linux/module.h> |
5a0ffe54 | 55 | #include <linux/sunrpc/bc_xprt.h> |
64c2ce8b | 56 | #include <linux/xattr.h> |
c7a360b0 | 57 | #include <linux/utsname.h> |
1da177e4 | 58 | |
4ce79717 | 59 | #include "nfs4_fs.h" |
1da177e4 | 60 | #include "delegation.h" |
101070ca | 61 | #include "internal.h" |
006ea73e | 62 | #include "iostat.h" |
fc931582 | 63 | #include "callback.h" |
b1f69b75 | 64 | #include "pnfs.h" |
1da177e4 LT |
65 | |
66 | #define NFSDBG_FACILITY NFSDBG_PROC | |
67 | ||
2066fe89 | 68 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
69 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
70 | ||
a78cb57a TM |
71 | #define NFS4_MAX_LOOP_ON_RECOVER (10) |
72 | ||
cdd4e68b | 73 | struct nfs4_opendata; |
864472e9 | 74 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
b257957e | 75 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data); |
1da177e4 | 76 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
9e33bed5 | 77 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *); |
9936781d | 78 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr); |
0ab64e0e TM |
79 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
80 | struct nfs_fattr *fattr, struct iattr *sattr, | |
81 | struct nfs4_state *state); | |
f062eb6c BS |
82 | #ifdef CONFIG_NFS_V4_1 |
83 | static int nfs41_test_stateid(struct nfs_server *, struct nfs4_state *); | |
84 | static int nfs41_free_stateid(struct nfs_server *, struct nfs4_state *); | |
85 | #endif | |
1da177e4 | 86 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 87 | static int nfs4_map_errors(int err) |
1da177e4 | 88 | { |
52567b03 TM |
89 | if (err >= -1000) |
90 | return err; | |
91 | switch (err) { | |
92 | case -NFS4ERR_RESOURCE: | |
93 | return -EREMOTEIO; | |
7ebb9315 BS |
94 | case -NFS4ERR_WRONGSEC: |
95 | return -EPERM; | |
3ddeb7c5 TM |
96 | case -NFS4ERR_BADOWNER: |
97 | case -NFS4ERR_BADNAME: | |
98 | return -EINVAL; | |
52567b03 | 99 | default: |
1da177e4 | 100 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 101 | __func__, -err); |
52567b03 | 102 | break; |
1da177e4 | 103 | } |
52567b03 | 104 | return -EIO; |
1da177e4 LT |
105 | } |
106 | ||
107 | /* | |
108 | * This is our standard bitmap for GETATTR requests. | |
109 | */ | |
110 | const u32 nfs4_fattr_bitmap[2] = { | |
111 | FATTR4_WORD0_TYPE | |
112 | | FATTR4_WORD0_CHANGE | |
113 | | FATTR4_WORD0_SIZE | |
114 | | FATTR4_WORD0_FSID | |
115 | | FATTR4_WORD0_FILEID, | |
116 | FATTR4_WORD1_MODE | |
117 | | FATTR4_WORD1_NUMLINKS | |
118 | | FATTR4_WORD1_OWNER | |
119 | | FATTR4_WORD1_OWNER_GROUP | |
120 | | FATTR4_WORD1_RAWDEV | |
121 | | FATTR4_WORD1_SPACE_USED | |
122 | | FATTR4_WORD1_TIME_ACCESS | |
123 | | FATTR4_WORD1_TIME_METADATA | |
124 | | FATTR4_WORD1_TIME_MODIFY | |
125 | }; | |
126 | ||
127 | const u32 nfs4_statfs_bitmap[2] = { | |
128 | FATTR4_WORD0_FILES_AVAIL | |
129 | | FATTR4_WORD0_FILES_FREE | |
130 | | FATTR4_WORD0_FILES_TOTAL, | |
131 | FATTR4_WORD1_SPACE_AVAIL | |
132 | | FATTR4_WORD1_SPACE_FREE | |
133 | | FATTR4_WORD1_SPACE_TOTAL | |
134 | }; | |
135 | ||
4ce79717 | 136 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
137 | FATTR4_WORD0_MAXLINK |
138 | | FATTR4_WORD0_MAXNAME, | |
139 | 0 | |
140 | }; | |
141 | ||
dae100c2 | 142 | const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE |
1da177e4 LT |
143 | | FATTR4_WORD0_MAXREAD |
144 | | FATTR4_WORD0_MAXWRITE | |
145 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 146 | FATTR4_WORD1_TIME_DELTA |
dae100c2 FI |
147 | | FATTR4_WORD1_FS_LAYOUT_TYPES, |
148 | FATTR4_WORD2_LAYOUT_BLKSIZE | |
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 | |
aabd0b40 | 366 | nfs4_free_slot(struct nfs4_slot_table *tbl, u8 free_slotid) |
e2c4ab3c AA |
367 | { |
368 | int slotid = free_slotid; | |
369 | ||
dfb4f309 | 370 | BUG_ON(slotid < 0 || slotid >= NFS4_MAX_SLOT_TABLE); |
e2c4ab3c AA |
371 | /* clear used bit in bitmap */ |
372 | __clear_bit(slotid, tbl->used_slots); | |
373 | ||
374 | /* update highest_used_slotid when it is freed */ | |
375 | if (slotid == tbl->highest_used_slotid) { | |
376 | slotid = find_last_bit(tbl->used_slots, tbl->max_slots); | |
bcb56164 | 377 | if (slotid < tbl->max_slots) |
e2c4ab3c AA |
378 | tbl->highest_used_slotid = slotid; |
379 | else | |
380 | tbl->highest_used_slotid = -1; | |
381 | } | |
e2c4ab3c AA |
382 | dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__, |
383 | free_slotid, tbl->highest_used_slotid); | |
384 | } | |
385 | ||
3bfb0fc5 | 386 | /* |
42acd021 | 387 | * Signal state manager thread if session fore channel is drained |
3bfb0fc5 | 388 | */ |
42acd021 | 389 | static void nfs4_check_drain_fc_complete(struct nfs4_session *ses) |
3bfb0fc5 | 390 | { |
689cf5c1 AB |
391 | struct rpc_task *task; |
392 | ||
a2118c33 | 393 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state)) { |
689cf5c1 AB |
394 | task = rpc_wake_up_next(&ses->fc_slot_table.slot_tbl_waitq); |
395 | if (task) | |
396 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
3bfb0fc5 AB |
397 | return; |
398 | } | |
399 | ||
400 | if (ses->fc_slot_table.highest_used_slotid != -1) | |
401 | return; | |
402 | ||
42acd021 AA |
403 | dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__); |
404 | complete(&ses->fc_slot_table.complete); | |
405 | } | |
406 | ||
407 | /* | |
408 | * Signal state manager thread if session back channel is drained | |
409 | */ | |
410 | void nfs4_check_drain_bc_complete(struct nfs4_session *ses) | |
411 | { | |
412 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state) || | |
413 | ses->bc_slot_table.highest_used_slotid != -1) | |
414 | return; | |
415 | dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__); | |
416 | complete(&ses->bc_slot_table.complete); | |
3bfb0fc5 AB |
417 | } |
418 | ||
d185a334 | 419 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 AA |
420 | { |
421 | struct nfs4_slot_table *tbl; | |
422 | ||
d185a334 | 423 | tbl = &res->sr_session->fc_slot_table; |
dfb4f309 | 424 | if (!res->sr_slot) { |
13615871 AA |
425 | /* just wake up the next guy waiting since |
426 | * we may have not consumed a slot after all */ | |
691daf3b | 427 | dprintk("%s: No slot\n", __func__); |
35dc1d74 | 428 | return; |
13615871 | 429 | } |
ea028ac9 | 430 | |
35dc1d74 | 431 | spin_lock(&tbl->slot_tbl_lock); |
aabd0b40 | 432 | nfs4_free_slot(tbl, res->sr_slot - tbl->slots); |
42acd021 | 433 | nfs4_check_drain_fc_complete(res->sr_session); |
35dc1d74 | 434 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 435 | res->sr_slot = NULL; |
13615871 AA |
436 | } |
437 | ||
14516c3a | 438 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c AA |
439 | { |
440 | unsigned long timestamp; | |
14516c3a | 441 | struct nfs_client *clp; |
b0df806c AA |
442 | |
443 | /* | |
444 | * sr_status remains 1 if an RPC level error occurred. The server | |
445 | * may or may not have processed the sequence operation.. | |
446 | * Proceed as if the server received and processed the sequence | |
447 | * operation. | |
448 | */ | |
449 | if (res->sr_status == 1) | |
450 | res->sr_status = NFS_OK; | |
451 | ||
468f8613 BS |
452 | /* don't increment the sequence number if the task wasn't sent */ |
453 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
454 | goto out; |
455 | ||
691daf3b | 456 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
457 | switch (res->sr_status) { |
458 | case 0: | |
b0df806c | 459 | /* Update the slot's sequence and clientid lease timer */ |
dfb4f309 | 460 | ++res->sr_slot->seq_nr; |
b0df806c | 461 | timestamp = res->sr_renewal_time; |
14516c3a | 462 | clp = res->sr_session->clp; |
452e9352 | 463 | do_renew_lease(clp, timestamp); |
0629e370 | 464 | /* Check sequence flags */ |
b4410c2f TM |
465 | if (res->sr_status_flags != 0) |
466 | nfs4_schedule_lease_recovery(clp); | |
14516c3a TM |
467 | break; |
468 | case -NFS4ERR_DELAY: | |
469 | /* The server detected a resend of the RPC call and | |
470 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
471 | * of RFC5661. | |
472 | */ | |
12364a4f | 473 | dprintk("%s: slot=%td seq=%d: Operation in progress\n", |
dfb4f309 BH |
474 | __func__, |
475 | res->sr_slot - res->sr_session->fc_slot_table.slots, | |
476 | res->sr_slot->seq_nr); | |
14516c3a TM |
477 | goto out_retry; |
478 | default: | |
479 | /* Just update the slot sequence no. */ | |
dfb4f309 | 480 | ++res->sr_slot->seq_nr; |
b0df806c AA |
481 | } |
482 | out: | |
483 | /* The session may be reset by one of the error handlers. */ | |
484 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 485 | nfs41_sequence_free_slot(res); |
14516c3a TM |
486 | return 1; |
487 | out_retry: | |
d05dd4e9 | 488 | if (!rpc_restart_call(task)) |
14516c3a TM |
489 | goto out; |
490 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
491 | return 0; | |
b0df806c AA |
492 | } |
493 | ||
14516c3a TM |
494 | static int nfs4_sequence_done(struct rpc_task *task, |
495 | struct nfs4_sequence_res *res) | |
df896455 | 496 | { |
14516c3a TM |
497 | if (res->sr_session == NULL) |
498 | return 1; | |
499 | return nfs41_sequence_done(task, res); | |
df896455 TM |
500 | } |
501 | ||
510b8175 BH |
502 | /* |
503 | * nfs4_find_slot - efficiently look for a free slot | |
504 | * | |
505 | * nfs4_find_slot looks for an unset bit in the used_slots bitmap. | |
506 | * If found, we mark the slot as used, update the highest_used_slotid, | |
507 | * and respectively set up the sequence operation args. | |
508 | * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise. | |
fbcd4abc AA |
509 | * |
510 | * Note: must be called with under the slot_tbl_lock. | |
510b8175 BH |
511 | */ |
512 | static u8 | |
40ead580 | 513 | nfs4_find_slot(struct nfs4_slot_table *tbl) |
510b8175 BH |
514 | { |
515 | int slotid; | |
516 | u8 ret_id = NFS4_MAX_SLOT_TABLE; | |
517 | BUILD_BUG_ON((u8)NFS4_MAX_SLOT_TABLE != (int)NFS4_MAX_SLOT_TABLE); | |
518 | ||
510b8175 BH |
519 | dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n", |
520 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, | |
521 | tbl->max_slots); | |
522 | slotid = find_first_zero_bit(tbl->used_slots, tbl->max_slots); | |
523 | if (slotid >= tbl->max_slots) | |
524 | goto out; | |
525 | __set_bit(slotid, tbl->used_slots); | |
526 | if (slotid > tbl->highest_used_slotid) | |
527 | tbl->highest_used_slotid = slotid; | |
528 | ret_id = slotid; | |
529 | out: | |
530 | dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n", | |
531 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, ret_id); | |
510b8175 BH |
532 | return ret_id; |
533 | } | |
534 | ||
dc70d7b3 | 535 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
536 | struct nfs4_sequence_args *args, |
537 | struct nfs4_sequence_res *res, | |
538 | int cache_reply, | |
539 | struct rpc_task *task) | |
540 | { | |
fbcd4abc AA |
541 | struct nfs4_slot *slot; |
542 | struct nfs4_slot_table *tbl; | |
543 | u8 slotid; | |
544 | ||
545 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 546 | /* slot already allocated? */ |
dfb4f309 | 547 | if (res->sr_slot != NULL) |
ce5039c1 AA |
548 | return 0; |
549 | ||
fbcd4abc AA |
550 | tbl = &session->fc_slot_table; |
551 | ||
552 | spin_lock(&tbl->slot_tbl_lock); | |
a2118c33 | 553 | if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) && |
5601a00d | 554 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { |
0b1c8fc4 | 555 | /* The state manager will wait until the slot table is empty */ |
05f0d236 | 556 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
b069d94a | 557 | spin_unlock(&tbl->slot_tbl_lock); |
0b1c8fc4 | 558 | dprintk("%s session is draining\n", __func__); |
05f0d236 | 559 | return -EAGAIN; |
b069d94a AA |
560 | } |
561 | ||
689cf5c1 AB |
562 | if (!rpc_queue_empty(&tbl->slot_tbl_waitq) && |
563 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { | |
564 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
565 | spin_unlock(&tbl->slot_tbl_lock); | |
566 | dprintk("%s enforce FIFO order\n", __func__); | |
567 | return -EAGAIN; | |
568 | } | |
569 | ||
40ead580 | 570 | slotid = nfs4_find_slot(tbl); |
fbcd4abc AA |
571 | if (slotid == NFS4_MAX_SLOT_TABLE) { |
572 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
573 | spin_unlock(&tbl->slot_tbl_lock); | |
574 | dprintk("<-- %s: no free slots\n", __func__); | |
575 | return -EAGAIN; | |
576 | } | |
577 | spin_unlock(&tbl->slot_tbl_lock); | |
578 | ||
689cf5c1 | 579 | rpc_task_set_priority(task, RPC_PRIORITY_NORMAL); |
fbcd4abc | 580 | slot = tbl->slots + slotid; |
99fe60d0 | 581 | args->sa_session = session; |
fbcd4abc AA |
582 | args->sa_slotid = slotid; |
583 | args->sa_cache_this = cache_reply; | |
584 | ||
585 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, slotid, slot->seq_nr); | |
586 | ||
99fe60d0 | 587 | res->sr_session = session; |
dfb4f309 | 588 | res->sr_slot = slot; |
fbcd4abc | 589 | res->sr_renewal_time = jiffies; |
2a6e26cd | 590 | res->sr_status_flags = 0; |
fbcd4abc AA |
591 | /* |
592 | * sr_status is only set in decode_sequence, and so will remain | |
593 | * set to 1 if an rpc level failure occurs. | |
594 | */ | |
595 | res->sr_status = 1; | |
ce5039c1 AA |
596 | return 0; |
597 | } | |
dc70d7b3 | 598 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 599 | |
035168ab | 600 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
601 | struct nfs4_sequence_args *args, |
602 | struct nfs4_sequence_res *res, | |
603 | int cache_reply, | |
604 | struct rpc_task *task) | |
605 | { | |
035168ab | 606 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
607 | int ret = 0; |
608 | ||
035168ab TM |
609 | if (session == NULL) { |
610 | args->sa_session = NULL; | |
611 | res->sr_session = NULL; | |
612 | goto out; | |
613 | } | |
614 | ||
12364a4f | 615 | dprintk("--> %s clp %p session %p sr_slot %td\n", |
dfb4f309 BH |
616 | __func__, session->clp, session, res->sr_slot ? |
617 | res->sr_slot - session->fc_slot_table.slots : -1); | |
ce5039c1 | 618 | |
035168ab | 619 | ret = nfs41_setup_sequence(session, args, res, cache_reply, |
ce5039c1 | 620 | task); |
ce5039c1 AA |
621 | out: |
622 | dprintk("<-- %s status=%d\n", __func__, ret); | |
623 | return ret; | |
624 | } | |
625 | ||
626 | struct nfs41_call_sync_data { | |
035168ab | 627 | const struct nfs_server *seq_server; |
ce5039c1 AA |
628 | struct nfs4_sequence_args *seq_args; |
629 | struct nfs4_sequence_res *seq_res; | |
630 | int cache_reply; | |
631 | }; | |
632 | ||
633 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
634 | { | |
635 | struct nfs41_call_sync_data *data = calldata; | |
636 | ||
035168ab TM |
637 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
638 | ||
639 | if (nfs4_setup_sequence(data->seq_server, data->seq_args, | |
ce5039c1 AA |
640 | data->seq_res, data->cache_reply, task)) |
641 | return; | |
642 | rpc_call_start(task); | |
643 | } | |
644 | ||
b257957e AB |
645 | static void nfs41_call_priv_sync_prepare(struct rpc_task *task, void *calldata) |
646 | { | |
647 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
648 | nfs41_call_sync_prepare(task, calldata); | |
649 | } | |
650 | ||
69ab40c4 AA |
651 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
652 | { | |
653 | struct nfs41_call_sync_data *data = calldata; | |
654 | ||
14516c3a | 655 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
656 | } |
657 | ||
ce5039c1 AA |
658 | struct rpc_call_ops nfs41_call_sync_ops = { |
659 | .rpc_call_prepare = nfs41_call_sync_prepare, | |
69ab40c4 | 660 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
661 | }; |
662 | ||
b257957e AB |
663 | struct rpc_call_ops nfs41_call_priv_sync_ops = { |
664 | .rpc_call_prepare = nfs41_call_priv_sync_prepare, | |
665 | .rpc_call_done = nfs41_call_sync_done, | |
666 | }; | |
667 | ||
7c513058 BS |
668 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
669 | struct nfs_server *server, | |
ce5039c1 AA |
670 | struct rpc_message *msg, |
671 | struct nfs4_sequence_args *args, | |
672 | struct nfs4_sequence_res *res, | |
b257957e AB |
673 | int cache_reply, |
674 | int privileged) | |
ce5039c1 AA |
675 | { |
676 | int ret; | |
677 | struct rpc_task *task; | |
678 | struct nfs41_call_sync_data data = { | |
035168ab | 679 | .seq_server = server, |
ce5039c1 AA |
680 | .seq_args = args, |
681 | .seq_res = res, | |
682 | .cache_reply = cache_reply, | |
683 | }; | |
684 | struct rpc_task_setup task_setup = { | |
7c513058 | 685 | .rpc_client = clnt, |
ce5039c1 AA |
686 | .rpc_message = msg, |
687 | .callback_ops = &nfs41_call_sync_ops, | |
688 | .callback_data = &data | |
689 | }; | |
690 | ||
dfb4f309 | 691 | res->sr_slot = NULL; |
b257957e AB |
692 | if (privileged) |
693 | task_setup.callback_ops = &nfs41_call_priv_sync_ops; | |
ce5039c1 AA |
694 | task = rpc_run_task(&task_setup); |
695 | if (IS_ERR(task)) | |
696 | ret = PTR_ERR(task); | |
697 | else { | |
698 | ret = task->tk_status; | |
699 | rpc_put_task(task); | |
700 | } | |
701 | return ret; | |
702 | } | |
703 | ||
7c513058 BS |
704 | int _nfs4_call_sync_session(struct rpc_clnt *clnt, |
705 | struct nfs_server *server, | |
cccef3b9 AA |
706 | struct rpc_message *msg, |
707 | struct nfs4_sequence_args *args, | |
708 | struct nfs4_sequence_res *res, | |
709 | int cache_reply) | |
710 | { | |
7c513058 | 711 | return nfs4_call_sync_sequence(clnt, server, msg, args, res, cache_reply, 0); |
cccef3b9 AA |
712 | } |
713 | ||
df896455 | 714 | #else |
14516c3a TM |
715 | static int nfs4_sequence_done(struct rpc_task *task, |
716 | struct nfs4_sequence_res *res) | |
df896455 | 717 | { |
14516c3a | 718 | return 1; |
df896455 | 719 | } |
cccef3b9 AA |
720 | #endif /* CONFIG_NFS_V4_1 */ |
721 | ||
7c513058 BS |
722 | int _nfs4_call_sync(struct rpc_clnt *clnt, |
723 | struct nfs_server *server, | |
cccef3b9 AA |
724 | struct rpc_message *msg, |
725 | struct nfs4_sequence_args *args, | |
726 | struct nfs4_sequence_res *res, | |
727 | int cache_reply) | |
728 | { | |
f3752975 | 729 | args->sa_session = res->sr_session = NULL; |
7c513058 | 730 | return rpc_call_sync(clnt, msg, 0); |
cccef3b9 AA |
731 | } |
732 | ||
e73b83f2 | 733 | static inline |
7c513058 BS |
734 | int nfs4_call_sync(struct rpc_clnt *clnt, |
735 | struct nfs_server *server, | |
e73b83f2 BS |
736 | struct rpc_message *msg, |
737 | struct nfs4_sequence_args *args, | |
738 | struct nfs4_sequence_res *res, | |
739 | int cache_reply) | |
740 | { | |
7c513058 BS |
741 | return server->nfs_client->cl_mvops->call_sync(clnt, server, msg, |
742 | args, res, cache_reply); | |
e73b83f2 | 743 | } |
cccef3b9 | 744 | |
38478b24 | 745 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 746 | { |
38478b24 | 747 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 748 | |
38478b24 | 749 | spin_lock(&dir->i_lock); |
40d24704 | 750 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; |
a9a4a87a | 751 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 752 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 753 | dir->i_version = cinfo->after; |
38478b24 | 754 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
755 | } |
756 | ||
e56e0b78 | 757 | struct nfs4_opendata { |
c6d00e63 | 758 | struct kref kref; |
e56e0b78 TM |
759 | struct nfs_openargs o_arg; |
760 | struct nfs_openres o_res; | |
cdd4e68b TM |
761 | struct nfs_open_confirmargs c_arg; |
762 | struct nfs_open_confirmres c_res; | |
e56e0b78 TM |
763 | struct nfs_fattr f_attr; |
764 | struct nfs_fattr dir_attr; | |
e56e0b78 | 765 | struct dentry *dir; |
82a2c1b7 | 766 | struct dentry *dentry; |
e56e0b78 | 767 | struct nfs4_state_owner *owner; |
aac00a8d | 768 | struct nfs4_state *state; |
e56e0b78 | 769 | struct iattr attrs; |
26e976a8 | 770 | unsigned long timestamp; |
3e309914 | 771 | unsigned int rpc_done : 1; |
24ac23ab TM |
772 | int rpc_status; |
773 | int cancelled; | |
e56e0b78 TM |
774 | }; |
775 | ||
2ced46c2 TM |
776 | |
777 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
778 | { | |
779 | p->o_res.f_attr = &p->f_attr; | |
780 | p->o_res.dir_attr = &p->dir_attr; | |
c1d51931 TM |
781 | p->o_res.seqid = p->o_arg.seqid; |
782 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 TM |
783 | p->o_res.server = p->o_arg.server; |
784 | nfs_fattr_init(&p->f_attr); | |
785 | nfs_fattr_init(&p->dir_attr); | |
786 | } | |
787 | ||
82a2c1b7 | 788 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 789 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be TM |
790 | const struct iattr *attrs, |
791 | gfp_t gfp_mask) | |
e56e0b78 | 792 | { |
82a2c1b7 | 793 | struct dentry *parent = dget_parent(dentry); |
e56e0b78 TM |
794 | struct inode *dir = parent->d_inode; |
795 | struct nfs_server *server = NFS_SERVER(dir); | |
796 | struct nfs4_opendata *p; | |
797 | ||
8535b2be | 798 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
799 | if (p == NULL) |
800 | goto err; | |
8535b2be | 801 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 TM |
802 | if (p->o_arg.seqid == NULL) |
803 | goto err_free; | |
82a2c1b7 AV |
804 | nfs_sb_active(dentry->d_sb); |
805 | p->dentry = dget(dentry); | |
e56e0b78 TM |
806 | p->dir = parent; |
807 | p->owner = sp; | |
808 | atomic_inc(&sp->so_count); | |
809 | p->o_arg.fh = NFS_FH(dir); | |
dc0b027d TM |
810 | p->o_arg.open_flags = flags; |
811 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
7539bbab | 812 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 813 | p->o_arg.id = sp->so_owner_id.id; |
82a2c1b7 | 814 | p->o_arg.name = &dentry->d_name; |
e56e0b78 TM |
815 | p->o_arg.server = server; |
816 | p->o_arg.bitmask = server->attr_bitmask; | |
817 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; | |
d77d76ff TM |
818 | if (flags & O_CREAT) { |
819 | u32 *s; | |
820 | ||
e56e0b78 TM |
821 | p->o_arg.u.attrs = &p->attrs; |
822 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
d77d76ff TM |
823 | s = (u32 *) p->o_arg.u.verifier.data; |
824 | s[0] = jiffies; | |
825 | s[1] = current->pid; | |
e56e0b78 | 826 | } |
cdd4e68b TM |
827 | p->c_arg.fh = &p->o_res.fh; |
828 | p->c_arg.stateid = &p->o_res.stateid; | |
829 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 830 | nfs4_init_opendata_res(p); |
c6d00e63 | 831 | kref_init(&p->kref); |
e56e0b78 TM |
832 | return p; |
833 | err_free: | |
834 | kfree(p); | |
835 | err: | |
836 | dput(parent); | |
837 | return NULL; | |
838 | } | |
839 | ||
c6d00e63 | 840 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 841 | { |
c6d00e63 TM |
842 | struct nfs4_opendata *p = container_of(kref, |
843 | struct nfs4_opendata, kref); | |
82a2c1b7 | 844 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
845 | |
846 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
847 | if (p->state != NULL) |
848 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
849 | nfs4_put_state_owner(p->owner); |
850 | dput(p->dir); | |
82a2c1b7 AV |
851 | dput(p->dentry); |
852 | nfs_sb_deactive(sb); | |
c6d00e63 TM |
853 | kfree(p); |
854 | } | |
855 | ||
856 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
857 | { | |
858 | if (p != NULL) | |
859 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
860 | } |
861 | ||
06f814a3 TM |
862 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
863 | { | |
06f814a3 TM |
864 | int ret; |
865 | ||
06f814a3 | 866 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
867 | return ret; |
868 | } | |
869 | ||
dc0b027d | 870 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
871 | { |
872 | int ret = 0; | |
dc0b027d TM |
873 | |
874 | if (open_mode & O_EXCL) | |
875 | goto out; | |
876 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 877 | case FMODE_READ: |
88069f77 TM |
878 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
879 | && state->n_rdonly != 0; | |
6ee41268 TM |
880 | break; |
881 | case FMODE_WRITE: | |
88069f77 TM |
882 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
883 | && state->n_wronly != 0; | |
6ee41268 TM |
884 | break; |
885 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
886 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
887 | && state->n_rdwr != 0; | |
6ee41268 | 888 | } |
dc0b027d | 889 | out: |
6ee41268 TM |
890 | return ret; |
891 | } | |
892 | ||
dc0b027d | 893 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 894 | { |
652f89f6 TM |
895 | if (delegation == NULL) |
896 | return 0; | |
dc0b027d | 897 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 898 | return 0; |
15c831bf | 899 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 900 | return 0; |
b7391f44 | 901 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
902 | return 1; |
903 | } | |
904 | ||
dc0b027d | 905 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 906 | { |
dc0b027d | 907 | switch (fmode) { |
e7616923 TM |
908 | case FMODE_WRITE: |
909 | state->n_wronly++; | |
910 | break; | |
911 | case FMODE_READ: | |
912 | state->n_rdonly++; | |
913 | break; | |
914 | case FMODE_READ|FMODE_WRITE: | |
915 | state->n_rdwr++; | |
916 | } | |
dc0b027d | 917 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
918 | } |
919 | ||
dc0b027d | 920 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
921 | { |
922 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
923 | memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data)); | |
924 | memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data)); | |
dc0b027d | 925 | switch (fmode) { |
003707c7 TM |
926 | case FMODE_READ: |
927 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
928 | break; | |
929 | case FMODE_WRITE: | |
930 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
931 | break; | |
932 | case FMODE_READ|FMODE_WRITE: | |
933 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
934 | } | |
e7616923 TM |
935 | } |
936 | ||
dc0b027d | 937 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 938 | { |
8bda4e4c | 939 | write_seqlock(&state->seqlock); |
dc0b027d | 940 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 941 | write_sequnlock(&state->seqlock); |
003707c7 TM |
942 | } |
943 | ||
dc0b027d | 944 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 945 | { |
8bda4e4c TM |
946 | /* |
947 | * Protect the call to nfs4_state_set_mode_locked and | |
948 | * serialise the stateid update | |
949 | */ | |
950 | write_seqlock(&state->seqlock); | |
003707c7 TM |
951 | if (deleg_stateid != NULL) { |
952 | memcpy(state->stateid.data, deleg_stateid->data, sizeof(state->stateid.data)); | |
953 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
954 | } | |
955 | if (open_stateid != NULL) | |
dc0b027d | 956 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
957 | write_sequnlock(&state->seqlock); |
958 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 959 | update_open_stateflags(state, fmode); |
ec073428 | 960 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
961 | } |
962 | ||
dc0b027d | 963 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
964 | { |
965 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
966 | struct nfs_delegation *deleg_cur; | |
967 | int ret = 0; | |
968 | ||
dc0b027d | 969 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
970 | |
971 | rcu_read_lock(); | |
972 | deleg_cur = rcu_dereference(nfsi->delegation); | |
973 | if (deleg_cur == NULL) | |
974 | goto no_delegation; | |
975 | ||
976 | spin_lock(&deleg_cur->lock); | |
977 | if (nfsi->delegation != deleg_cur || | |
dc0b027d | 978 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
979 | goto no_delegation_unlock; |
980 | ||
981 | if (delegation == NULL) | |
982 | delegation = &deleg_cur->stateid; | |
983 | else if (memcmp(deleg_cur->stateid.data, delegation->data, NFS4_STATEID_SIZE) != 0) | |
984 | goto no_delegation_unlock; | |
985 | ||
b7391f44 | 986 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 987 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
988 | ret = 1; |
989 | no_delegation_unlock: | |
990 | spin_unlock(&deleg_cur->lock); | |
991 | no_delegation: | |
992 | rcu_read_unlock(); | |
993 | ||
994 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 995 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
996 | ret = 1; |
997 | } | |
998 | ||
999 | return ret; | |
1000 | } | |
1001 | ||
1002 | ||
dc0b027d | 1003 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1004 | { |
1005 | struct nfs_delegation *delegation; | |
1006 | ||
1007 | rcu_read_lock(); | |
1008 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1009 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1010 | rcu_read_unlock(); |
1011 | return; | |
1012 | } | |
1013 | rcu_read_unlock(); | |
1014 | nfs_inode_return_delegation(inode); | |
1015 | } | |
1016 | ||
6ee41268 | 1017 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1018 | { |
1019 | struct nfs4_state *state = opendata->state; | |
1020 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1021 | struct nfs_delegation *delegation; | |
dc0b027d TM |
1022 | int open_mode = opendata->o_arg.open_flags & O_EXCL; |
1023 | fmode_t fmode = opendata->o_arg.fmode; | |
aac00a8d TM |
1024 | nfs4_stateid stateid; |
1025 | int ret = -EAGAIN; | |
1026 | ||
aac00a8d | 1027 | for (;;) { |
dc0b027d | 1028 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 1029 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
1030 | if (can_open_cached(state, fmode, open_mode)) { |
1031 | update_open_stateflags(state, fmode); | |
6ee41268 | 1032 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
1033 | goto out_return_state; |
1034 | } | |
1035 | spin_unlock(&state->owner->so_lock); | |
1036 | } | |
34310430 TM |
1037 | rcu_read_lock(); |
1038 | delegation = rcu_dereference(nfsi->delegation); | |
652f89f6 | 1039 | if (!can_open_delegated(delegation, fmode)) { |
34310430 | 1040 | rcu_read_unlock(); |
aac00a8d | 1041 | break; |
34310430 | 1042 | } |
aac00a8d TM |
1043 | /* Save the delegation */ |
1044 | memcpy(stateid.data, delegation->stateid.data, sizeof(stateid.data)); | |
1045 | rcu_read_unlock(); | |
af22f94a | 1046 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
1047 | if (ret != 0) |
1048 | goto out; | |
1049 | ret = -EAGAIN; | |
34310430 TM |
1050 | |
1051 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1052 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1053 | goto out_return_state; |
aac00a8d | 1054 | } |
aac00a8d TM |
1055 | out: |
1056 | return ERR_PTR(ret); | |
1057 | out_return_state: | |
1058 | atomic_inc(&state->count); | |
1059 | return state; | |
1060 | } | |
1061 | ||
24ac23ab TM |
1062 | static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) |
1063 | { | |
1064 | struct inode *inode; | |
1065 | struct nfs4_state *state = NULL; | |
003707c7 | 1066 | struct nfs_delegation *delegation; |
1b370bc2 | 1067 | int ret; |
24ac23ab | 1068 | |
aac00a8d | 1069 | if (!data->rpc_done) { |
6ee41268 | 1070 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1071 | goto out; |
1072 | } | |
1073 | ||
1b370bc2 | 1074 | ret = -EAGAIN; |
24ac23ab | 1075 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1076 | goto err; |
24ac23ab | 1077 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 1078 | ret = PTR_ERR(inode); |
03f28e3a | 1079 | if (IS_ERR(inode)) |
1b370bc2 TM |
1080 | goto err; |
1081 | ret = -ENOMEM; | |
24ac23ab TM |
1082 | state = nfs4_get_open_state(inode, data->owner); |
1083 | if (state == NULL) | |
1b370bc2 | 1084 | goto err_put_inode; |
549d6ed5 | 1085 | if (data->o_res.delegation_type != 0) { |
549d6ed5 TM |
1086 | int delegation_flags = 0; |
1087 | ||
003707c7 TM |
1088 | rcu_read_lock(); |
1089 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
1090 | if (delegation) | |
1091 | delegation_flags = delegation->flags; | |
1092 | rcu_read_unlock(); | |
652f89f6 TM |
1093 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) { |
1094 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " | |
1095 | "returning a delegation for " | |
1096 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
1097 | NFS_CLIENT(inode)->cl_server); | |
1098 | } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) | |
549d6ed5 TM |
1099 | nfs_inode_set_delegation(state->inode, |
1100 | data->owner->so_cred, | |
1101 | &data->o_res); | |
1102 | else | |
1103 | nfs_inode_reclaim_delegation(state->inode, | |
1104 | data->owner->so_cred, | |
1105 | &data->o_res); | |
1106 | } | |
34310430 TM |
1107 | |
1108 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
dc0b027d | 1109 | data->o_arg.fmode); |
24ac23ab | 1110 | iput(inode); |
aac00a8d | 1111 | out: |
24ac23ab | 1112 | return state; |
1b370bc2 TM |
1113 | err_put_inode: |
1114 | iput(inode); | |
1115 | err: | |
1116 | return ERR_PTR(ret); | |
24ac23ab TM |
1117 | } |
1118 | ||
864472e9 TM |
1119 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1120 | { | |
1121 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1122 | struct nfs_open_context *ctx; | |
1123 | ||
1124 | spin_lock(&state->inode->i_lock); | |
1125 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1126 | if (ctx->state != state) | |
1127 | continue; | |
1128 | get_nfs_open_context(ctx); | |
1129 | spin_unlock(&state->inode->i_lock); | |
1130 | return ctx; | |
1131 | } | |
1132 | spin_unlock(&state->inode->i_lock); | |
1133 | return ERR_PTR(-ENOENT); | |
1134 | } | |
1135 | ||
6f220ed5 TM |
1136 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
1137 | { | |
1138 | struct nfs4_opendata *opendata; | |
1139 | ||
3d4ff43d | 1140 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, NULL, GFP_NOFS); |
6f220ed5 TM |
1141 | if (opendata == NULL) |
1142 | return ERR_PTR(-ENOMEM); | |
1143 | opendata->state = state; | |
1144 | atomic_inc(&state->count); | |
1145 | return opendata; | |
1146 | } | |
1147 | ||
dc0b027d | 1148 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1149 | { |
2ced46c2 | 1150 | struct nfs4_state *newstate; |
864472e9 TM |
1151 | int ret; |
1152 | ||
dc0b027d TM |
1153 | opendata->o_arg.open_flags = 0; |
1154 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1155 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1156 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1157 | nfs4_init_opendata_res(opendata); | |
b257957e | 1158 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1159 | if (ret != 0) |
1160 | return ret; | |
2ced46c2 | 1161 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1162 | if (IS_ERR(newstate)) |
1163 | return PTR_ERR(newstate); | |
643168c2 | 1164 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1165 | *res = newstate; |
864472e9 TM |
1166 | return 0; |
1167 | } | |
1168 | ||
1169 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1170 | { | |
864472e9 | 1171 | struct nfs4_state *newstate; |
864472e9 TM |
1172 | int ret; |
1173 | ||
1174 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1175 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
1176 | smp_rmb(); |
1177 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1178 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1179 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1180 | if (ret != 0) |
1181 | return ret; | |
2ced46c2 TM |
1182 | if (newstate != state) |
1183 | return -ESTALE; | |
864472e9 TM |
1184 | } |
1185 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1186 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1187 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1188 | if (ret != 0) |
1189 | return ret; | |
2ced46c2 TM |
1190 | if (newstate != state) |
1191 | return -ESTALE; | |
864472e9 TM |
1192 | } |
1193 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1194 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1195 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1196 | if (ret != 0) |
1197 | return ret; | |
2ced46c2 TM |
1198 | if (newstate != state) |
1199 | return -ESTALE; | |
864472e9 | 1200 | } |
1ac7e2fd TM |
1201 | /* |
1202 | * We may have performed cached opens for all three recoveries. | |
1203 | * Check if we need to update the current stateid. | |
1204 | */ | |
1205 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
1206 | memcmp(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)) != 0) { | |
8bda4e4c | 1207 | write_seqlock(&state->seqlock); |
1ac7e2fd TM |
1208 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
1209 | memcpy(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)); | |
8bda4e4c | 1210 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1211 | } |
864472e9 TM |
1212 | return 0; |
1213 | } | |
1214 | ||
1da177e4 LT |
1215 | /* |
1216 | * OPEN_RECLAIM: | |
1217 | * reclaim state on the server after a reboot. | |
1da177e4 | 1218 | */ |
539cd03a | 1219 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1220 | { |
1ac7e2fd | 1221 | struct nfs_delegation *delegation; |
864472e9 | 1222 | struct nfs4_opendata *opendata; |
dc0b027d | 1223 | fmode_t delegation_type = 0; |
1da177e4 LT |
1224 | int status; |
1225 | ||
6f220ed5 TM |
1226 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1227 | if (IS_ERR(opendata)) | |
1228 | return PTR_ERR(opendata); | |
864472e9 TM |
1229 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
1230 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
1231 | rcu_read_lock(); |
1232 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1233 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1234 | delegation_type = delegation->type; |
1ac7e2fd | 1235 | rcu_read_unlock(); |
864472e9 TM |
1236 | opendata->o_arg.u.delegation_type = delegation_type; |
1237 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1238 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1239 | return status; |
1240 | } | |
1241 | ||
539cd03a | 1242 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1243 | { |
1244 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1245 | struct nfs4_exception exception = { }; | |
1246 | int err; | |
1247 | do { | |
539cd03a | 1248 | err = _nfs4_do_open_reclaim(ctx, state); |
168667c4 | 1249 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1250 | break; |
1251 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1252 | } while (exception.retry); |
1253 | return err; | |
1254 | } | |
1255 | ||
864472e9 TM |
1256 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1257 | { | |
1258 | struct nfs_open_context *ctx; | |
1259 | int ret; | |
1260 | ||
1261 | ctx = nfs4_state_find_open_context(state); | |
1262 | if (IS_ERR(ctx)) | |
1263 | return PTR_ERR(ctx); | |
539cd03a | 1264 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1265 | put_nfs_open_context(ctx); |
1266 | return ret; | |
1267 | } | |
1268 | ||
13437e12 | 1269 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 1270 | { |
e56e0b78 | 1271 | struct nfs4_opendata *opendata; |
864472e9 | 1272 | int ret; |
1da177e4 | 1273 | |
6f220ed5 TM |
1274 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1275 | if (IS_ERR(opendata)) | |
1276 | return PTR_ERR(opendata); | |
e56e0b78 | 1277 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
13437e12 | 1278 | memcpy(opendata->o_arg.u.delegation.data, stateid->data, |
e56e0b78 | 1279 | sizeof(opendata->o_arg.u.delegation.data)); |
864472e9 | 1280 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 1281 | nfs4_opendata_put(opendata); |
864472e9 | 1282 | return ret; |
1da177e4 LT |
1283 | } |
1284 | ||
13437e12 | 1285 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
1286 | { |
1287 | struct nfs4_exception exception = { }; | |
539cd03a | 1288 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
1289 | int err; |
1290 | do { | |
13437e12 | 1291 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
1292 | switch (err) { |
1293 | case 0: | |
965b5d67 TM |
1294 | case -ENOENT: |
1295 | case -ESTALE: | |
1296 | goto out; | |
bcfa49f6 RL |
1297 | case -NFS4ERR_BADSESSION: |
1298 | case -NFS4ERR_BADSLOT: | |
1299 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1300 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1301 | case -NFS4ERR_DEADSESSION: | |
0400a6b0 | 1302 | nfs4_schedule_session_recovery(server->nfs_client->cl_session); |
bcfa49f6 | 1303 | goto out; |
1da177e4 LT |
1304 | case -NFS4ERR_STALE_CLIENTID: |
1305 | case -NFS4ERR_STALE_STATEID: | |
1306 | case -NFS4ERR_EXPIRED: | |
1307 | /* Don't recall a delegation if it was lost */ | |
0400a6b0 | 1308 | nfs4_schedule_lease_recovery(server->nfs_client); |
965b5d67 TM |
1309 | goto out; |
1310 | case -ERESTARTSYS: | |
1311 | /* | |
1312 | * The show must go on: exit, but mark the | |
1313 | * stateid as needing recovery. | |
1314 | */ | |
1315 | case -NFS4ERR_ADMIN_REVOKED: | |
1316 | case -NFS4ERR_BAD_STATEID: | |
0400a6b0 | 1317 | nfs4_schedule_stateid_recovery(server, state); |
168667c4 TM |
1318 | case -EKEYEXPIRED: |
1319 | /* | |
1320 | * User RPCSEC_GSS context has expired. | |
1321 | * We cannot recover this stateid now, so | |
1322 | * skip it and allow recovery thread to | |
1323 | * proceed. | |
1324 | */ | |
965b5d67 TM |
1325 | case -ENOMEM: |
1326 | err = 0; | |
1327 | goto out; | |
1da177e4 LT |
1328 | } |
1329 | err = nfs4_handle_exception(server, err, &exception); | |
1330 | } while (exception.retry); | |
965b5d67 | 1331 | out: |
1da177e4 LT |
1332 | return err; |
1333 | } | |
1334 | ||
cdd4e68b TM |
1335 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1336 | { | |
1337 | struct nfs4_opendata *data = calldata; | |
1338 | ||
1339 | data->rpc_status = task->tk_status; | |
26e976a8 | 1340 | if (data->rpc_status == 0) { |
cdd4e68b TM |
1341 | memcpy(data->o_res.stateid.data, data->c_res.stateid.data, |
1342 | sizeof(data->o_res.stateid.data)); | |
bb22629e | 1343 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1344 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1345 | data->rpc_done = 1; |
26e976a8 | 1346 | } |
cdd4e68b TM |
1347 | } |
1348 | ||
1349 | static void nfs4_open_confirm_release(void *calldata) | |
1350 | { | |
1351 | struct nfs4_opendata *data = calldata; | |
1352 | struct nfs4_state *state = NULL; | |
1353 | ||
1354 | /* If this request hasn't been cancelled, do nothing */ | |
1355 | if (data->cancelled == 0) | |
1356 | goto out_free; | |
1357 | /* In case of error, no cleanup! */ | |
3e309914 | 1358 | if (!data->rpc_done) |
cdd4e68b | 1359 | goto out_free; |
cdd4e68b | 1360 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1361 | if (!IS_ERR(state)) |
643168c2 | 1362 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1363 | out_free: |
c6d00e63 | 1364 | nfs4_opendata_put(data); |
cdd4e68b TM |
1365 | } |
1366 | ||
1367 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1368 | .rpc_call_done = nfs4_open_confirm_done, |
1369 | .rpc_release = nfs4_open_confirm_release, | |
1370 | }; | |
1371 | ||
1372 | /* | |
1373 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1374 | */ | |
1375 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1376 | { | |
1377 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1378 | struct rpc_task *task; | |
5138fde0 TM |
1379 | struct rpc_message msg = { |
1380 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1381 | .rpc_argp = &data->c_arg, | |
1382 | .rpc_resp = &data->c_res, | |
1383 | .rpc_cred = data->owner->so_cred, | |
1384 | }; | |
c970aa85 TM |
1385 | struct rpc_task_setup task_setup_data = { |
1386 | .rpc_client = server->client, | |
5138fde0 | 1387 | .rpc_message = &msg, |
c970aa85 TM |
1388 | .callback_ops = &nfs4_open_confirm_ops, |
1389 | .callback_data = data, | |
101070ca | 1390 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1391 | .flags = RPC_TASK_ASYNC, |
1392 | }; | |
1da177e4 LT |
1393 | int status; |
1394 | ||
c6d00e63 | 1395 | kref_get(&data->kref); |
3e309914 TM |
1396 | data->rpc_done = 0; |
1397 | data->rpc_status = 0; | |
5138fde0 | 1398 | data->timestamp = jiffies; |
c970aa85 | 1399 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1400 | if (IS_ERR(task)) |
cdd4e68b | 1401 | return PTR_ERR(task); |
cdd4e68b TM |
1402 | status = nfs4_wait_for_completion_rpc_task(task); |
1403 | if (status != 0) { | |
1404 | data->cancelled = 1; | |
1405 | smp_wmb(); | |
1406 | } else | |
1407 | status = data->rpc_status; | |
e6b3c4db | 1408 | rpc_put_task(task); |
1da177e4 LT |
1409 | return status; |
1410 | } | |
1411 | ||
24ac23ab | 1412 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1413 | { |
24ac23ab TM |
1414 | struct nfs4_opendata *data = calldata; |
1415 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 1416 | |
24ac23ab TM |
1417 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
1418 | return; | |
aac00a8d TM |
1419 | /* |
1420 | * Check if we still need to send an OPEN call, or if we can use | |
1421 | * a delegation instead. | |
1422 | */ | |
1423 | if (data->state != NULL) { | |
1424 | struct nfs_delegation *delegation; | |
1425 | ||
dc0b027d | 1426 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1427 | goto out_no_action; |
aac00a8d TM |
1428 | rcu_read_lock(); |
1429 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
652f89f6 TM |
1430 | if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR && |
1431 | can_open_delegated(delegation, data->o_arg.fmode)) | |
1432 | goto unlock_no_action; | |
aac00a8d TM |
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 | 1448 | return; |
652f89f6 TM |
1449 | unlock_no_action: |
1450 | rcu_read_unlock(); | |
6ee41268 TM |
1451 | out_no_action: |
1452 | task->tk_action = NULL; | |
1453 | ||
24ac23ab | 1454 | } |
1da177e4 | 1455 | |
b257957e AB |
1456 | static void nfs4_recover_open_prepare(struct rpc_task *task, void *calldata) |
1457 | { | |
1458 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
1459 | nfs4_open_prepare(task, calldata); | |
1460 | } | |
1461 | ||
24ac23ab TM |
1462 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1463 | { | |
1464 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1465 | |
24ac23ab | 1466 | data->rpc_status = task->tk_status; |
d898528c | 1467 | |
14516c3a TM |
1468 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1469 | return; | |
d898528c | 1470 | |
24ac23ab TM |
1471 | if (task->tk_status == 0) { |
1472 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1473 | case S_IFREG: |
1474 | break; | |
1475 | case S_IFLNK: | |
24ac23ab | 1476 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1477 | break; |
1478 | case S_IFDIR: | |
24ac23ab | 1479 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1480 | break; |
1481 | default: | |
24ac23ab | 1482 | data->rpc_status = -ENOTDIR; |
6f926b5b | 1483 | } |
26e976a8 | 1484 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1485 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1486 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1487 | } |
3e309914 | 1488 | data->rpc_done = 1; |
24ac23ab | 1489 | } |
6f926b5b | 1490 | |
24ac23ab TM |
1491 | static void nfs4_open_release(void *calldata) |
1492 | { | |
1493 | struct nfs4_opendata *data = calldata; | |
1494 | struct nfs4_state *state = NULL; | |
1495 | ||
1496 | /* If this request hasn't been cancelled, do nothing */ | |
1497 | if (data->cancelled == 0) | |
1498 | goto out_free; | |
1499 | /* In case of error, no cleanup! */ | |
3e309914 | 1500 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1501 | goto out_free; |
1502 | /* In case we need an open_confirm, no cleanup! */ | |
1503 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1504 | goto out_free; | |
24ac23ab | 1505 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1506 | if (!IS_ERR(state)) |
643168c2 | 1507 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1508 | out_free: |
c6d00e63 | 1509 | nfs4_opendata_put(data); |
24ac23ab TM |
1510 | } |
1511 | ||
1512 | static const struct rpc_call_ops nfs4_open_ops = { | |
1513 | .rpc_call_prepare = nfs4_open_prepare, | |
1514 | .rpc_call_done = nfs4_open_done, | |
1515 | .rpc_release = nfs4_open_release, | |
1516 | }; | |
1517 | ||
b257957e AB |
1518 | static const struct rpc_call_ops nfs4_recover_open_ops = { |
1519 | .rpc_call_prepare = nfs4_recover_open_prepare, | |
1520 | .rpc_call_done = nfs4_open_done, | |
1521 | .rpc_release = nfs4_open_release, | |
1522 | }; | |
1523 | ||
1524 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) | |
24ac23ab TM |
1525 | { |
1526 | struct inode *dir = data->dir->d_inode; | |
1527 | struct nfs_server *server = NFS_SERVER(dir); | |
1528 | struct nfs_openargs *o_arg = &data->o_arg; | |
1529 | struct nfs_openres *o_res = &data->o_res; | |
1530 | struct rpc_task *task; | |
5138fde0 TM |
1531 | struct rpc_message msg = { |
1532 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1533 | .rpc_argp = o_arg, | |
1534 | .rpc_resp = o_res, | |
1535 | .rpc_cred = data->owner->so_cred, | |
1536 | }; | |
c970aa85 TM |
1537 | struct rpc_task_setup task_setup_data = { |
1538 | .rpc_client = server->client, | |
5138fde0 | 1539 | .rpc_message = &msg, |
c970aa85 TM |
1540 | .callback_ops = &nfs4_open_ops, |
1541 | .callback_data = data, | |
101070ca | 1542 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1543 | .flags = RPC_TASK_ASYNC, |
1544 | }; | |
24ac23ab TM |
1545 | int status; |
1546 | ||
c6d00e63 | 1547 | kref_get(&data->kref); |
3e309914 TM |
1548 | data->rpc_done = 0; |
1549 | data->rpc_status = 0; | |
2ced46c2 | 1550 | data->cancelled = 0; |
b257957e AB |
1551 | if (isrecover) |
1552 | task_setup_data.callback_ops = &nfs4_recover_open_ops; | |
c970aa85 | 1553 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1554 | if (IS_ERR(task)) |
1555 | return PTR_ERR(task); | |
1556 | status = nfs4_wait_for_completion_rpc_task(task); | |
1557 | if (status != 0) { | |
1558 | data->cancelled = 1; | |
1559 | smp_wmb(); | |
1560 | } else | |
1561 | status = data->rpc_status; | |
1562 | rpc_put_task(task); | |
1563 | ||
1564 | return status; | |
1565 | } | |
1566 | ||
1567 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1568 | { | |
1569 | struct inode *dir = data->dir->d_inode; | |
1570 | struct nfs_openres *o_res = &data->o_res; | |
1571 | int status; | |
1572 | ||
1573 | status = nfs4_run_open_task(data, 1); | |
1574 | if (status != 0 || !data->rpc_done) | |
1575 | return status; | |
1576 | ||
1577 | nfs_refresh_inode(dir, o_res->dir_attr); | |
1578 | ||
1579 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { | |
1580 | status = _nfs4_proc_open_confirm(data); | |
1581 | if (status != 0) | |
1582 | return status; | |
1583 | } | |
1584 | ||
1585 | return status; | |
1586 | } | |
1587 | ||
1588 | /* | |
1589 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1590 | */ | |
1591 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1592 | { | |
1593 | struct inode *dir = data->dir->d_inode; | |
1594 | struct nfs_server *server = NFS_SERVER(dir); | |
1595 | struct nfs_openargs *o_arg = &data->o_arg; | |
1596 | struct nfs_openres *o_res = &data->o_res; | |
1597 | int status; | |
1598 | ||
1599 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
1600 | if (!data->rpc_done) |
1601 | return status; | |
1602 | if (status != 0) { | |
1603 | if (status == -NFS4ERR_BADNAME && | |
1604 | !(o_arg->open_flags & O_CREAT)) | |
1605 | return -ENOENT; | |
24ac23ab | 1606 | return status; |
08ef7bd3 | 1607 | } |
24ac23ab | 1608 | |
56ae19f3 TM |
1609 | if (o_arg->open_flags & O_CREAT) { |
1610 | update_changeattr(dir, &o_res->cinfo); | |
1611 | nfs_post_op_update_inode(dir, o_res->dir_attr); | |
1612 | } else | |
1613 | nfs_refresh_inode(dir, o_res->dir_attr); | |
0df5dd4a TM |
1614 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1615 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1616 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1617 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1618 | if (status != 0) |
24ac23ab | 1619 | return status; |
1da177e4 LT |
1620 | } |
1621 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1622 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1623 | return 0; |
1da177e4 LT |
1624 | } |
1625 | ||
d83217c1 | 1626 | static int nfs4_client_recover_expired_lease(struct nfs_client *clp) |
58d9714a | 1627 | { |
a78cb57a | 1628 | unsigned int loop; |
6b30954e | 1629 | int ret; |
58d9714a | 1630 | |
a78cb57a | 1631 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { |
65de872e | 1632 | ret = nfs4_wait_clnt_recover(clp); |
6b30954e | 1633 | if (ret != 0) |
a78cb57a | 1634 | break; |
e598d843 TM |
1635 | if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) && |
1636 | !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state)) | |
6b30954e | 1637 | break; |
0400a6b0 | 1638 | nfs4_schedule_state_manager(clp); |
a78cb57a | 1639 | ret = -EIO; |
6b30954e | 1640 | } |
a78cb57a | 1641 | return ret; |
58d9714a TM |
1642 | } |
1643 | ||
d83217c1 AA |
1644 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1645 | { | |
1646 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1647 | } | |
1648 | ||
1da177e4 LT |
1649 | /* |
1650 | * OPEN_EXPIRED: | |
1651 | * reclaim state on the server after a network partition. | |
1652 | * Assumes caller holds the appropriate lock | |
1653 | */ | |
539cd03a | 1654 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1655 | { |
e56e0b78 | 1656 | struct nfs4_opendata *opendata; |
864472e9 | 1657 | int ret; |
1da177e4 | 1658 | |
6f220ed5 TM |
1659 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1660 | if (IS_ERR(opendata)) | |
1661 | return PTR_ERR(opendata); | |
864472e9 | 1662 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1663 | if (ret == -ESTALE) |
3d4ff43d | 1664 | d_drop(ctx->dentry); |
c6d00e63 | 1665 | nfs4_opendata_put(opendata); |
864472e9 | 1666 | return ret; |
1da177e4 LT |
1667 | } |
1668 | ||
a9ed2e25 | 1669 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1670 | { |
539cd03a | 1671 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1672 | struct nfs4_exception exception = { }; |
1673 | int err; | |
1674 | ||
1675 | do { | |
539cd03a | 1676 | err = _nfs4_open_expired(ctx, state); |
a9ed2e25 TM |
1677 | switch (err) { |
1678 | default: | |
1679 | goto out; | |
1680 | case -NFS4ERR_GRACE: | |
1681 | case -NFS4ERR_DELAY: | |
1682 | nfs4_handle_exception(server, err, &exception); | |
1683 | err = 0; | |
1684 | } | |
202b50dc | 1685 | } while (exception.retry); |
a9ed2e25 | 1686 | out: |
202b50dc TM |
1687 | return err; |
1688 | } | |
1689 | ||
1da177e4 LT |
1690 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1691 | { | |
1da177e4 | 1692 | struct nfs_open_context *ctx; |
864472e9 | 1693 | int ret; |
1da177e4 | 1694 | |
864472e9 TM |
1695 | ctx = nfs4_state_find_open_context(state); |
1696 | if (IS_ERR(ctx)) | |
1697 | return PTR_ERR(ctx); | |
539cd03a | 1698 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1699 | put_nfs_open_context(ctx); |
1700 | return ret; | |
1da177e4 LT |
1701 | } |
1702 | ||
f062eb6c BS |
1703 | #if defined(CONFIG_NFS_V4_1) |
1704 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
1705 | { | |
1706 | int status; | |
1707 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1708 | ||
1709 | status = nfs41_test_stateid(server, state); | |
1710 | if (status == NFS_OK) | |
1711 | return 0; | |
1712 | nfs41_free_stateid(server, state); | |
1713 | return nfs4_open_expired(sp, state); | |
1714 | } | |
1715 | #endif | |
1716 | ||
aa53ed54 JL |
1717 | /* |
1718 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1719 | * fields corresponding to attributes that were used to store the verifier. | |
1720 | * Make sure we clobber those fields in the later setattr call | |
1721 | */ | |
1722 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1723 | { | |
1724 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1725 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1726 | sattr->ia_valid |= ATTR_ATIME; | |
1727 | ||
1728 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1729 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1730 | sattr->ia_valid |= ATTR_MTIME; | |
1731 | } | |
1732 | ||
1da177e4 | 1733 | /* |
24ac23ab | 1734 | * Returns a referenced nfs4_state |
1da177e4 | 1735 | */ |
82a2c1b7 | 1736 | 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 |
1737 | { |
1738 | struct nfs4_state_owner *sp; | |
1739 | struct nfs4_state *state = NULL; | |
1740 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1741 | struct nfs4_opendata *opendata; |
aac00a8d | 1742 | int status; |
1da177e4 LT |
1743 | |
1744 | /* Protect against reboot recovery conflicts */ | |
1da177e4 LT |
1745 | status = -ENOMEM; |
1746 | if (!(sp = nfs4_get_state_owner(server, cred))) { | |
1747 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); | |
1748 | goto out_err; | |
1749 | } | |
58d9714a TM |
1750 | status = nfs4_recover_expired_lease(server); |
1751 | if (status != 0) | |
b4454fe1 | 1752 | goto err_put_state_owner; |
82a2c1b7 AV |
1753 | if (dentry->d_inode != NULL) |
1754 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 1755 | status = -ENOMEM; |
82a2c1b7 | 1756 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, GFP_KERNEL); |
e56e0b78 | 1757 | if (opendata == NULL) |
95d35cb4 | 1758 | goto err_put_state_owner; |
1da177e4 | 1759 | |
82a2c1b7 AV |
1760 | if (dentry->d_inode != NULL) |
1761 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 1762 | |
24ac23ab | 1763 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1764 | if (status != 0) |
c6d00e63 | 1765 | goto err_opendata_put; |
1da177e4 | 1766 | |
24ac23ab | 1767 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1768 | status = PTR_ERR(state); |
1769 | if (IS_ERR(state)) | |
c6d00e63 | 1770 | goto err_opendata_put; |
0df5dd4a | 1771 | if (server->caps & NFS_CAP_POSIX_LOCK) |
8e469ebd | 1772 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); |
0ab64e0e TM |
1773 | |
1774 | if (opendata->o_arg.open_flags & O_EXCL) { | |
1775 | nfs4_exclusive_attrset(opendata, sattr); | |
1776 | ||
1777 | nfs_fattr_init(opendata->o_res.f_attr); | |
1778 | status = nfs4_do_setattr(state->inode, cred, | |
1779 | opendata->o_res.f_attr, sattr, | |
1780 | state); | |
1781 | if (status == 0) | |
1782 | nfs_setattr_update_inode(state->inode, sattr); | |
1783 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
1784 | } | |
c6d00e63 | 1785 | nfs4_opendata_put(opendata); |
1da177e4 | 1786 | nfs4_put_state_owner(sp); |
1da177e4 LT |
1787 | *res = state; |
1788 | return 0; | |
c6d00e63 TM |
1789 | err_opendata_put: |
1790 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
1791 | err_put_state_owner: |
1792 | nfs4_put_state_owner(sp); | |
1da177e4 | 1793 | out_err: |
1da177e4 LT |
1794 | *res = NULL; |
1795 | return status; | |
1796 | } | |
1797 | ||
1798 | ||
82a2c1b7 | 1799 | 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 |
1800 | { |
1801 | struct nfs4_exception exception = { }; | |
1802 | struct nfs4_state *res; | |
1803 | int status; | |
1804 | ||
1805 | do { | |
82a2c1b7 | 1806 | status = _nfs4_do_open(dir, dentry, fmode, flags, sattr, cred, &res); |
1da177e4 LT |
1807 | if (status == 0) |
1808 | break; | |
1809 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1810 | * book-keeping w.r.t. state-changing operations | |
1811 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1812 | * It is actually a sign of a bug on the client or on the server. | |
1813 | * | |
1814 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1815 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1816 | * have unhashed the old state_owner for us, and that we can |
1817 | * therefore safely retry using a new one. We should still warn | |
1818 | * the user though... | |
1819 | */ | |
1820 | if (status == -NFS4ERR_BAD_SEQID) { | |
6f43ddcc TM |
1821 | printk(KERN_WARNING "NFS: v4 server %s " |
1822 | " returned a bad sequence-id error!\n", | |
1823 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1824 | exception.retry = 1; |
1825 | continue; | |
1826 | } | |
550f5747 TM |
1827 | /* |
1828 | * BAD_STATEID on OPEN means that the server cancelled our | |
1829 | * state before it received the OPEN_CONFIRM. | |
1830 | * Recover by retrying the request as per the discussion | |
1831 | * on Page 181 of RFC3530. | |
1832 | */ | |
1833 | if (status == -NFS4ERR_BAD_STATEID) { | |
1834 | exception.retry = 1; | |
1835 | continue; | |
1836 | } | |
aac00a8d TM |
1837 | if (status == -EAGAIN) { |
1838 | /* We must have found a delegation */ | |
1839 | exception.retry = 1; | |
1840 | continue; | |
1841 | } | |
1da177e4 LT |
1842 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1843 | status, &exception)); | |
1844 | } while (exception.retry); | |
1845 | return res; | |
1846 | } | |
1847 | ||
659bfcd6 TM |
1848 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1849 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1850 | struct nfs4_state *state) | |
1da177e4 | 1851 | { |
3e4f6290 | 1852 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1853 | struct nfs_setattrargs arg = { |
3e4f6290 | 1854 | .fh = NFS_FH(inode), |
1da177e4 LT |
1855 | .iap = sattr, |
1856 | .server = server, | |
1857 | .bitmask = server->attr_bitmask, | |
1858 | }; | |
1859 | struct nfs_setattrres res = { | |
1860 | .fattr = fattr, | |
1861 | .server = server, | |
1862 | }; | |
1863 | struct rpc_message msg = { | |
659bfcd6 TM |
1864 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
1865 | .rpc_argp = &arg, | |
1866 | .rpc_resp = &res, | |
1867 | .rpc_cred = cred, | |
1da177e4 | 1868 | }; |
26e976a8 | 1869 | unsigned long timestamp = jiffies; |
65e4308d | 1870 | int status; |
1da177e4 | 1871 | |
0e574af1 | 1872 | nfs_fattr_init(fattr); |
1da177e4 | 1873 | |
3e4f6290 TM |
1874 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) { |
1875 | /* Use that stateid */ | |
1876 | } else if (state != NULL) { | |
77041ed9 | 1877 | nfs4_copy_stateid(&arg.stateid, state, current->files, current->tgid); |
08e9eac4 | 1878 | } else |
1da177e4 LT |
1879 | memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid)); |
1880 | ||
7c513058 | 1881 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
1882 | if (status == 0 && state != NULL) |
1883 | renew_lease(server, timestamp); | |
65e4308d | 1884 | return status; |
1da177e4 LT |
1885 | } |
1886 | ||
659bfcd6 TM |
1887 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1888 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1889 | struct nfs4_state *state) | |
1da177e4 | 1890 | { |
3e4f6290 | 1891 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
1892 | struct nfs4_exception exception = { }; |
1893 | int err; | |
1894 | do { | |
1895 | err = nfs4_handle_exception(server, | |
659bfcd6 | 1896 | _nfs4_do_setattr(inode, cred, fattr, sattr, state), |
1da177e4 LT |
1897 | &exception); |
1898 | } while (exception.retry); | |
1899 | return err; | |
1900 | } | |
1901 | ||
1902 | struct nfs4_closedata { | |
1903 | struct inode *inode; | |
1904 | struct nfs4_state *state; | |
1905 | struct nfs_closeargs arg; | |
1906 | struct nfs_closeres res; | |
516a6af6 | 1907 | struct nfs_fattr fattr; |
26e976a8 | 1908 | unsigned long timestamp; |
f7e8917a FI |
1909 | bool roc; |
1910 | u32 roc_barrier; | |
1da177e4 LT |
1911 | }; |
1912 | ||
963d8fe5 | 1913 | static void nfs4_free_closedata(void *data) |
9512135d | 1914 | { |
963d8fe5 TM |
1915 | struct nfs4_closedata *calldata = data; |
1916 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 1917 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 1918 | |
f7e8917a FI |
1919 | if (calldata->roc) |
1920 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
1921 | nfs4_put_open_state(calldata->state); |
1922 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 1923 | nfs4_put_state_owner(sp); |
643168c2 | 1924 | nfs_sb_deactive(sb); |
9512135d TM |
1925 | kfree(calldata); |
1926 | } | |
1927 | ||
88069f77 TM |
1928 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
1929 | fmode_t fmode) | |
1930 | { | |
1931 | spin_lock(&state->owner->so_lock); | |
1932 | if (!(fmode & FMODE_READ)) | |
1933 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1934 | if (!(fmode & FMODE_WRITE)) | |
1935 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1936 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1937 | spin_unlock(&state->owner->so_lock); | |
1938 | } | |
1939 | ||
963d8fe5 | 1940 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 1941 | { |
963d8fe5 | 1942 | struct nfs4_closedata *calldata = data; |
1da177e4 | 1943 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
1944 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
1945 | ||
14516c3a TM |
1946 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
1947 | return; | |
1da177e4 LT |
1948 | /* hmm. we are done with the inode, and in the process of freeing |
1949 | * the state_owner. we keep this around to process errors | |
1950 | */ | |
1da177e4 LT |
1951 | switch (task->tk_status) { |
1952 | case 0: | |
f7e8917a FI |
1953 | if (calldata->roc) |
1954 | pnfs_roc_set_barrier(state->inode, | |
1955 | calldata->roc_barrier); | |
45328c35 | 1956 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 1957 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
1958 | nfs4_close_clear_stateid_flags(state, |
1959 | calldata->arg.fmode); | |
1da177e4 LT |
1960 | break; |
1961 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
1962 | case -NFS4ERR_OLD_STATEID: |
1963 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 1964 | case -NFS4ERR_EXPIRED: |
dc0b027d | 1965 | if (calldata->arg.fmode == 0) |
9e33bed5 | 1966 | break; |
1da177e4 | 1967 | default: |
72211dbe TM |
1968 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
1969 | rpc_restart_call_prepare(task); | |
1da177e4 | 1970 | } |
72211dbe | 1971 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 1972 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
1da177e4 LT |
1973 | } |
1974 | ||
4ce70ada | 1975 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 1976 | { |
4ce70ada | 1977 | struct nfs4_closedata *calldata = data; |
9512135d | 1978 | struct nfs4_state *state = calldata->state; |
88069f77 | 1979 | int call_close = 0; |
9512135d | 1980 | |
963d8fe5 | 1981 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 1982 | return; |
003707c7 | 1983 | |
88069f77 TM |
1984 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
1985 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 1986 | spin_lock(&state->owner->so_lock); |
003707c7 | 1987 | /* Calculate the change in open mode */ |
e7616923 | 1988 | if (state->n_rdwr == 0) { |
003707c7 | 1989 | if (state->n_rdonly == 0) { |
88069f77 TM |
1990 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
1991 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
1992 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
1993 | } |
1994 | if (state->n_wronly == 0) { | |
88069f77 TM |
1995 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
1996 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
1997 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 1998 | } |
e7616923 | 1999 | } |
4cecb76f | 2000 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2001 | |
2002 | if (!call_close) { | |
963d8fe5 TM |
2003 | /* Note: exit _without_ calling nfs4_close_done */ |
2004 | task->tk_action = NULL; | |
9512135d TM |
2005 | return; |
2006 | } | |
88069f77 | 2007 | |
f7e8917a | 2008 | if (calldata->arg.fmode == 0) { |
88069f77 | 2009 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a FI |
2010 | if (calldata->roc && |
2011 | pnfs_roc_drain(calldata->inode, &calldata->roc_barrier)) { | |
2012 | rpc_sleep_on(&NFS_SERVER(calldata->inode)->roc_rpcwaitq, | |
2013 | task, NULL); | |
2014 | return; | |
2015 | } | |
2016 | } | |
88069f77 | 2017 | |
516a6af6 | 2018 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2019 | calldata->timestamp = jiffies; |
035168ab | 2020 | if (nfs4_setup_sequence(NFS_SERVER(calldata->inode), |
19ddab06 AA |
2021 | &calldata->arg.seq_args, &calldata->res.seq_res, |
2022 | 1, task)) | |
2023 | return; | |
5138fde0 | 2024 | rpc_call_start(task); |
1da177e4 LT |
2025 | } |
2026 | ||
963d8fe5 | 2027 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2028 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2029 | .rpc_call_done = nfs4_close_done, |
2030 | .rpc_release = nfs4_free_closedata, | |
2031 | }; | |
2032 | ||
1da177e4 LT |
2033 | /* |
2034 | * It is possible for data to be read/written from a mem-mapped file | |
2035 | * after the sys_close call (which hits the vfs layer as a flush). | |
2036 | * This means that we can't safely call nfsv4 close on a file until | |
2037 | * the inode is cleared. This in turn means that we are not good | |
2038 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2039 | * share state even when we are done with one of the three share | |
2040 | * stateid's in the inode. | |
2041 | * | |
2042 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2043 | */ | |
643168c2 | 2044 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait, bool roc) |
1da177e4 | 2045 | { |
4a35bd41 | 2046 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2047 | struct nfs4_closedata *calldata; |
b39e625b TM |
2048 | struct nfs4_state_owner *sp = state->owner; |
2049 | struct rpc_task *task; | |
5138fde0 TM |
2050 | struct rpc_message msg = { |
2051 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2052 | .rpc_cred = state->owner->so_cred, | |
2053 | }; | |
c970aa85 TM |
2054 | struct rpc_task_setup task_setup_data = { |
2055 | .rpc_client = server->client, | |
5138fde0 | 2056 | .rpc_message = &msg, |
c970aa85 | 2057 | .callback_ops = &nfs4_close_ops, |
101070ca | 2058 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2059 | .flags = RPC_TASK_ASYNC, |
2060 | }; | |
9512135d | 2061 | int status = -ENOMEM; |
1da177e4 | 2062 | |
8535b2be | 2063 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2064 | if (calldata == NULL) |
9512135d | 2065 | goto out; |
4a35bd41 | 2066 | calldata->inode = state->inode; |
1da177e4 | 2067 | calldata->state = state; |
4a35bd41 | 2068 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2069 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2070 | /* Serialization for the sequence id */ |
8535b2be | 2071 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2072 | if (calldata->arg.seqid == NULL) |
2073 | goto out_free_calldata; | |
dc0b027d | 2074 | calldata->arg.fmode = 0; |
a65318bf | 2075 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2076 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2077 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2078 | calldata->res.server = server; |
f7e8917a | 2079 | calldata->roc = roc; |
643168c2 | 2080 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2081 | |
1174dd1f TM |
2082 | msg.rpc_argp = &calldata->arg; |
2083 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2084 | task_setup_data.callback_data = calldata; |
2085 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2086 | if (IS_ERR(task)) |
2087 | return PTR_ERR(task); | |
a49c3c77 TM |
2088 | status = 0; |
2089 | if (wait) | |
2090 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2091 | rpc_put_task(task); |
a49c3c77 | 2092 | return status; |
9512135d TM |
2093 | out_free_calldata: |
2094 | kfree(calldata); | |
2095 | out: | |
f7e8917a FI |
2096 | if (roc) |
2097 | pnfs_roc_release(state->inode); | |
b39e625b TM |
2098 | nfs4_put_open_state(state); |
2099 | nfs4_put_state_owner(sp); | |
9512135d | 2100 | return status; |
1da177e4 LT |
2101 | } |
2102 | ||
2b484297 | 2103 | static struct inode * |
cd9a1c0e | 2104 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2105 | { |
1da177e4 | 2106 | struct nfs4_state *state; |
1da177e4 | 2107 | |
565277f6 | 2108 | /* Protect against concurrent sillydeletes */ |
3d4ff43d | 2109 | state = nfs4_do_open(dir, ctx->dentry, ctx->mode, open_flags, attr, ctx->cred); |
f46e0bd3 TM |
2110 | if (IS_ERR(state)) |
2111 | return ERR_CAST(state); | |
cd9a1c0e | 2112 | ctx->state = state; |
f46e0bd3 | 2113 | return igrab(state->inode); |
1da177e4 LT |
2114 | } |
2115 | ||
1185a552 | 2116 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2117 | { |
2118 | if (ctx->state == NULL) | |
2119 | return; | |
2120 | if (is_sync) | |
643168c2 | 2121 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2122 | else |
643168c2 | 2123 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2124 | } |
1da177e4 LT |
2125 | |
2126 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2127 | { | |
43652ad5 BH |
2128 | struct nfs4_server_caps_arg args = { |
2129 | .fhandle = fhandle, | |
2130 | }; | |
1da177e4 LT |
2131 | struct nfs4_server_caps_res res = {}; |
2132 | struct rpc_message msg = { | |
2133 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2134 | .rpc_argp = &args, |
1da177e4 LT |
2135 | .rpc_resp = &res, |
2136 | }; | |
2137 | int status; | |
2138 | ||
7c513058 | 2139 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2140 | if (status == 0) { |
2141 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2142 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2143 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2144 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2145 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2146 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2147 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2148 | server->caps |= NFS_CAP_ACLS; | |
2149 | if (res.has_links != 0) | |
2150 | server->caps |= NFS_CAP_HARDLINKS; | |
2151 | if (res.has_symlinks != 0) | |
2152 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2153 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2154 | server->caps |= NFS_CAP_FILEID; | |
2155 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2156 | server->caps |= NFS_CAP_MODE; | |
2157 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2158 | server->caps |= NFS_CAP_NLINK; | |
2159 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2160 | server->caps |= NFS_CAP_OWNER; | |
2161 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2162 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2163 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2164 | server->caps |= NFS_CAP_ATIME; | |
2165 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2166 | server->caps |= NFS_CAP_CTIME; | |
2167 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2168 | server->caps |= NFS_CAP_MTIME; | |
2169 | ||
a65318bf TM |
2170 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2171 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2172 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 LT |
2173 | server->acl_bitmask = res.acl_bitmask; |
2174 | } | |
cccef3b9 | 2175 | |
1da177e4 LT |
2176 | return status; |
2177 | } | |
2178 | ||
55a97593 | 2179 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2180 | { |
2181 | struct nfs4_exception exception = { }; | |
2182 | int err; | |
2183 | do { | |
2184 | err = nfs4_handle_exception(server, | |
2185 | _nfs4_server_capabilities(server, fhandle), | |
2186 | &exception); | |
2187 | } while (exception.retry); | |
2188 | return err; | |
2189 | } | |
2190 | ||
2191 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2192 | struct nfs_fsinfo *info) | |
2193 | { | |
1da177e4 LT |
2194 | struct nfs4_lookup_root_arg args = { |
2195 | .bitmask = nfs4_fattr_bitmap, | |
2196 | }; | |
2197 | struct nfs4_lookup_res res = { | |
2198 | .server = server, | |
0e574af1 | 2199 | .fattr = info->fattr, |
1da177e4 LT |
2200 | .fh = fhandle, |
2201 | }; | |
2202 | struct rpc_message msg = { | |
2203 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2204 | .rpc_argp = &args, | |
2205 | .rpc_resp = &res, | |
2206 | }; | |
008f55d0 | 2207 | |
0e574af1 | 2208 | nfs_fattr_init(info->fattr); |
7c513058 | 2209 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2210 | } |
2211 | ||
2212 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2213 | struct nfs_fsinfo *info) | |
2214 | { | |
2215 | struct nfs4_exception exception = { }; | |
2216 | int err; | |
2217 | do { | |
fb8a5ba8 BS |
2218 | err = _nfs4_lookup_root(server, fhandle, info); |
2219 | switch (err) { | |
2220 | case 0: | |
2221 | case -NFS4ERR_WRONGSEC: | |
2222 | break; | |
2223 | default: | |
2224 | err = nfs4_handle_exception(server, err, &exception); | |
2225 | } | |
1da177e4 LT |
2226 | } while (exception.retry); |
2227 | return err; | |
2228 | } | |
2229 | ||
8f70e95f BS |
2230 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2231 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2232 | { | |
2233 | struct rpc_auth *auth; | |
2234 | int ret; | |
2235 | ||
2236 | auth = rpcauth_create(flavor, server->client); | |
2237 | if (!auth) { | |
2238 | ret = -EIO; | |
2239 | goto out; | |
2240 | } | |
2241 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2242 | out: |
2243 | return ret; | |
2244 | } | |
2245 | ||
801a16dc | 2246 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2247 | struct nfs_fsinfo *info) |
1da177e4 | 2248 | { |
8f70e95f | 2249 | int i, len, status = 0; |
0fabee24 | 2250 | rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS]; |
1da177e4 | 2251 | |
801a16dc BS |
2252 | len = gss_mech_list_pseudoflavors(&flav_array[0]); |
2253 | flav_array[len] = RPC_AUTH_NULL; | |
2254 | len += 1; | |
8f70e95f BS |
2255 | |
2256 | for (i = 0; i < len; i++) { | |
2257 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); | |
fb8a5ba8 | 2258 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2259 | continue; |
2260 | break; | |
8f70e95f | 2261 | } |
fb8a5ba8 BS |
2262 | /* |
2263 | * -EACCESS could mean that the user doesn't have correct permissions | |
2264 | * to access the mount. It could also mean that we tried to mount | |
2265 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2266 | * existing mount programs don't handle -EACCES very well so it should | |
2267 | * be mapped to -EPERM instead. | |
2268 | */ | |
2269 | if (status == -EACCES) | |
2270 | status = -EPERM; | |
801a16dc BS |
2271 | return status; |
2272 | } | |
2273 | ||
2274 | /* | |
2275 | * get the file handle for the "/" directory on the server | |
2276 | */ | |
2277 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2278 | struct nfs_fsinfo *info) | |
2279 | { | |
fca78d6d | 2280 | int minor_version = server->nfs_client->cl_minorversion; |
801a16dc | 2281 | int status = nfs4_lookup_root(server, fhandle, info); |
fb8a5ba8 BS |
2282 | if ((status == -NFS4ERR_WRONGSEC) && !(server->flags & NFS_MOUNT_SECFLAVOUR)) |
2283 | /* | |
2284 | * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM | |
2285 | * by nfs4_map_errors() as this function exits. | |
2286 | */ | |
fca78d6d | 2287 | status = nfs_v4_minor_ops[minor_version]->find_root_sec(server, fhandle, info); |
1da177e4 LT |
2288 | if (status == 0) |
2289 | status = nfs4_server_capabilities(server, fhandle); | |
2290 | if (status == 0) | |
2291 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2292 | return nfs4_map_errors(status); |
1da177e4 LT |
2293 | } |
2294 | ||
533eb461 | 2295 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); |
6b97fd3d MN |
2296 | /* |
2297 | * Get locations and (maybe) other attributes of a referral. | |
2298 | * Note that we'll actually follow the referral later when | |
2299 | * we detect fsid mismatch in inode revalidation | |
2300 | */ | |
533eb461 AA |
2301 | static int nfs4_get_referral(struct inode *dir, const struct qstr *name, |
2302 | struct nfs_fattr *fattr, struct nfs_fh *fhandle) | |
6b97fd3d MN |
2303 | { |
2304 | int status = -ENOMEM; | |
2305 | struct page *page = NULL; | |
2306 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2307 | |
2308 | page = alloc_page(GFP_KERNEL); | |
2309 | if (page == NULL) | |
2310 | goto out; | |
2311 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2312 | if (locations == NULL) | |
2313 | goto out; | |
2314 | ||
c228fd3a | 2315 | status = nfs4_proc_fs_locations(dir, name, locations, page); |
6b97fd3d MN |
2316 | if (status != 0) |
2317 | goto out; | |
2318 | /* Make sure server returned a different fsid for the referral */ | |
2319 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2320 | dprintk("%s: server did not return a different fsid for" |
2321 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2322 | status = -EIO; |
2323 | goto out; | |
2324 | } | |
533eb461 AA |
2325 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2326 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2327 | |
533eb461 | 2328 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2329 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2330 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2331 | out: | |
2332 | if (page) | |
2333 | __free_page(page); | |
5d7ca35a | 2334 | kfree(locations); |
6b97fd3d MN |
2335 | return status; |
2336 | } | |
2337 | ||
1da177e4 LT |
2338 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2339 | { | |
2340 | struct nfs4_getattr_arg args = { | |
2341 | .fh = fhandle, | |
2342 | .bitmask = server->attr_bitmask, | |
2343 | }; | |
2344 | struct nfs4_getattr_res res = { | |
2345 | .fattr = fattr, | |
2346 | .server = server, | |
2347 | }; | |
2348 | struct rpc_message msg = { | |
2349 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2350 | .rpc_argp = &args, | |
2351 | .rpc_resp = &res, | |
2352 | }; | |
2353 | ||
0e574af1 | 2354 | nfs_fattr_init(fattr); |
7c513058 | 2355 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2356 | } |
2357 | ||
2358 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2359 | { | |
2360 | struct nfs4_exception exception = { }; | |
2361 | int err; | |
2362 | do { | |
2363 | err = nfs4_handle_exception(server, | |
2364 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2365 | &exception); | |
2366 | } while (exception.retry); | |
2367 | return err; | |
2368 | } | |
2369 | ||
2370 | /* | |
2371 | * The file is not closed if it is opened due to the a request to change | |
2372 | * the size of the file. The open call will not be needed once the | |
2373 | * VFS layer lookup-intents are implemented. | |
2374 | * | |
2375 | * Close is called when the inode is destroyed. | |
2376 | * If we haven't opened the file for O_WRONLY, we | |
2377 | * need to in the size_change case to obtain a stateid. | |
2378 | * | |
2379 | * Got race? | |
2380 | * Because OPEN is always done by name in nfsv4, it is | |
2381 | * possible that we opened a different file by the same | |
2382 | * name. We can recognize this race condition, but we | |
2383 | * can't do anything about it besides returning an error. | |
2384 | * | |
2385 | * This will be fixed with VFS changes (lookup-intent). | |
2386 | */ | |
2387 | static int | |
2388 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2389 | struct iattr *sattr) | |
2390 | { | |
08e9eac4 | 2391 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2392 | struct rpc_cred *cred = NULL; |
d530838b | 2393 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2394 | int status; |
2395 | ||
8a1636c4 BH |
2396 | if (pnfs_ld_layoutret_on_setattr(inode)) |
2397 | pnfs_return_layout(inode); | |
2398 | ||
0e574af1 | 2399 | nfs_fattr_init(fattr); |
1da177e4 | 2400 | |
d530838b | 2401 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2402 | if (sattr->ia_valid & ATTR_FILE) { |
2403 | struct nfs_open_context *ctx; | |
2404 | ||
2405 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2406 | if (ctx) { |
2407 | cred = ctx->cred; | |
2408 | state = ctx->state; | |
2409 | } | |
659bfcd6 | 2410 | } |
08e9eac4 | 2411 | |
659bfcd6 | 2412 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2413 | if (status == 0) |
2414 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2415 | return status; |
2416 | } | |
2417 | ||
0c2e53f1 TM |
2418 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
2419 | const struct qstr *name, struct nfs_fh *fhandle, | |
2420 | struct nfs_fattr *fattr) | |
2b3de441 | 2421 | { |
0c2e53f1 | 2422 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
2423 | int status; |
2424 | struct nfs4_lookup_arg args = { | |
2425 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 2426 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
2427 | .name = name, |
2428 | }; | |
2429 | struct nfs4_lookup_res res = { | |
2430 | .server = server, | |
2431 | .fattr = fattr, | |
2432 | .fh = fhandle, | |
2433 | }; | |
2434 | struct rpc_message msg = { | |
2435 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2436 | .rpc_argp = &args, | |
2437 | .rpc_resp = &res, | |
2438 | }; | |
2439 | ||
2440 | nfs_fattr_init(fattr); | |
2441 | ||
1da177e4 | 2442 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 2443 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2444 | dprintk("NFS reply lookup: %d\n", status); |
2445 | return status; | |
2446 | } | |
2447 | ||
7ebb9315 BS |
2448 | void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr, struct nfs_fh *fh) |
2449 | { | |
2450 | memset(fh, 0, sizeof(struct nfs_fh)); | |
2451 | fattr->fsid.major = 1; | |
2452 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
2453 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_FSID | NFS_ATTR_FATTR_MOUNTPOINT; | |
2454 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; | |
2455 | fattr->nlink = 2; | |
2456 | } | |
2457 | ||
7c513058 BS |
2458 | static int nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, struct qstr *name, |
2459 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
1da177e4 LT |
2460 | { |
2461 | struct nfs4_exception exception = { }; | |
2462 | int err; | |
2463 | do { | |
0c2e53f1 TM |
2464 | int status; |
2465 | ||
2466 | status = _nfs4_proc_lookup(clnt, dir, name, fhandle, fattr); | |
2467 | switch (status) { | |
08ef7bd3 TM |
2468 | case -NFS4ERR_BADNAME: |
2469 | return -ENOENT; | |
0c2e53f1 | 2470 | case -NFS4ERR_MOVED: |
a6f498a8 | 2471 | return nfs4_get_referral(dir, name, fattr, fhandle); |
0c2e53f1 | 2472 | case -NFS4ERR_WRONGSEC: |
7ebb9315 | 2473 | nfs_fixup_secinfo_attributes(fattr, fhandle); |
0c2e53f1 TM |
2474 | } |
2475 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2476 | status, &exception); | |
1da177e4 LT |
2477 | } while (exception.retry); |
2478 | return err; | |
2479 | } | |
2480 | ||
2481 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2482 | { | |
76b32999 | 2483 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2484 | struct nfs4_accessargs args = { |
2485 | .fh = NFS_FH(inode), | |
76b32999 TM |
2486 | .bitmask = server->attr_bitmask, |
2487 | }; | |
2488 | struct nfs4_accessres res = { | |
2489 | .server = server, | |
1da177e4 | 2490 | }; |
1da177e4 LT |
2491 | struct rpc_message msg = { |
2492 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2493 | .rpc_argp = &args, | |
2494 | .rpc_resp = &res, | |
2495 | .rpc_cred = entry->cred, | |
2496 | }; | |
2497 | int mode = entry->mask; | |
2498 | int status; | |
2499 | ||
2500 | /* | |
2501 | * Determine which access bits we want to ask for... | |
2502 | */ | |
2503 | if (mode & MAY_READ) | |
2504 | args.access |= NFS4_ACCESS_READ; | |
2505 | if (S_ISDIR(inode->i_mode)) { | |
2506 | if (mode & MAY_WRITE) | |
2507 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2508 | if (mode & MAY_EXEC) | |
2509 | args.access |= NFS4_ACCESS_LOOKUP; | |
2510 | } else { | |
2511 | if (mode & MAY_WRITE) | |
2512 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2513 | if (mode & MAY_EXEC) | |
2514 | args.access |= NFS4_ACCESS_EXECUTE; | |
2515 | } | |
c407d41a TM |
2516 | |
2517 | res.fattr = nfs_alloc_fattr(); | |
2518 | if (res.fattr == NULL) | |
2519 | return -ENOMEM; | |
2520 | ||
7c513058 | 2521 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2522 | if (!status) { |
2523 | entry->mask = 0; | |
2524 | if (res.access & NFS4_ACCESS_READ) | |
2525 | entry->mask |= MAY_READ; | |
2526 | if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE)) | |
2527 | entry->mask |= MAY_WRITE; | |
2528 | if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE)) | |
2529 | entry->mask |= MAY_EXEC; | |
c407d41a | 2530 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2531 | } |
c407d41a | 2532 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2533 | return status; |
2534 | } | |
2535 | ||
2536 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2537 | { | |
2538 | struct nfs4_exception exception = { }; | |
2539 | int err; | |
2540 | do { | |
2541 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2542 | _nfs4_proc_access(inode, entry), | |
2543 | &exception); | |
2544 | } while (exception.retry); | |
2545 | return err; | |
2546 | } | |
2547 | ||
2548 | /* | |
2549 | * TODO: For the time being, we don't try to get any attributes | |
2550 | * along with any of the zero-copy operations READ, READDIR, | |
2551 | * READLINK, WRITE. | |
2552 | * | |
2553 | * In the case of the first three, we want to put the GETATTR | |
2554 | * after the read-type operation -- this is because it is hard | |
2555 | * to predict the length of a GETATTR response in v4, and thus | |
2556 | * align the READ data correctly. This means that the GETATTR | |
2557 | * may end up partially falling into the page cache, and we should | |
2558 | * shift it into the 'tail' of the xdr_buf before processing. | |
2559 | * To do this efficiently, we need to know the total length | |
2560 | * of data received, which doesn't seem to be available outside | |
2561 | * of the RPC layer. | |
2562 | * | |
2563 | * In the case of WRITE, we also want to put the GETATTR after | |
2564 | * the operation -- in this case because we want to make sure | |
2565 | * we get the post-operation mtime and size. This means that | |
2566 | * we can't use xdr_encode_pages() as written: we need a variant | |
2567 | * of it which would leave room in the 'tail' iovec. | |
2568 | * | |
2569 | * Both of these changes to the XDR layer would in fact be quite | |
2570 | * minor, but I decided to leave them for a subsequent patch. | |
2571 | */ | |
2572 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2573 | unsigned int pgbase, unsigned int pglen) | |
2574 | { | |
2575 | struct nfs4_readlink args = { | |
2576 | .fh = NFS_FH(inode), | |
2577 | .pgbase = pgbase, | |
2578 | .pglen = pglen, | |
2579 | .pages = &page, | |
2580 | }; | |
f50c7000 | 2581 | struct nfs4_readlink_res res; |
1da177e4 LT |
2582 | struct rpc_message msg = { |
2583 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2584 | .rpc_argp = &args, | |
f50c7000 | 2585 | .rpc_resp = &res, |
1da177e4 LT |
2586 | }; |
2587 | ||
7c513058 | 2588 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2589 | } |
2590 | ||
2591 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2592 | unsigned int pgbase, unsigned int pglen) | |
2593 | { | |
2594 | struct nfs4_exception exception = { }; | |
2595 | int err; | |
2596 | do { | |
2597 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2598 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2599 | &exception); | |
2600 | } while (exception.retry); | |
2601 | return err; | |
2602 | } | |
2603 | ||
1da177e4 LT |
2604 | /* |
2605 | * Got race? | |
2606 | * We will need to arrange for the VFS layer to provide an atomic open. | |
2607 | * Until then, this create/open method is prone to inefficiency and race | |
2608 | * conditions due to the lookup, create, and open VFS calls from sys_open() | |
2609 | * placed on the wire. | |
2610 | * | |
2611 | * Given the above sorry state of affairs, I'm simply sending an OPEN. | |
2612 | * The file will be opened again in the subsequent VFS open call | |
2613 | * (nfs4_proc_file_open). | |
2614 | * | |
2615 | * The open for read will just hang around to be used by any process that | |
2616 | * opens the file O_RDONLY. This will all be resolved with the VFS changes. | |
2617 | */ | |
2618 | ||
2619 | static int | |
2620 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
c0204fd2 | 2621 | int flags, struct nfs_open_context *ctx) |
1da177e4 | 2622 | { |
82a2c1b7 | 2623 | struct dentry *de = dentry; |
1da177e4 | 2624 | struct nfs4_state *state; |
c0204fd2 TM |
2625 | struct rpc_cred *cred = NULL; |
2626 | fmode_t fmode = 0; | |
1da177e4 LT |
2627 | int status = 0; |
2628 | ||
c0204fd2 TM |
2629 | if (ctx != NULL) { |
2630 | cred = ctx->cred; | |
3d4ff43d | 2631 | de = ctx->dentry; |
c0204fd2 | 2632 | fmode = ctx->mode; |
1da177e4 | 2633 | } |
a8a5da99 | 2634 | sattr->ia_mode &= ~current_umask(); |
82a2c1b7 | 2635 | state = nfs4_do_open(dir, de, fmode, flags, sattr, cred); |
d4d9cdcb | 2636 | d_drop(dentry); |
1da177e4 LT |
2637 | if (IS_ERR(state)) { |
2638 | status = PTR_ERR(state); | |
c0204fd2 | 2639 | goto out; |
1da177e4 | 2640 | } |
d4d9cdcb | 2641 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2642 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
c0204fd2 TM |
2643 | if (ctx != NULL) |
2644 | ctx->state = state; | |
02a913a7 | 2645 | else |
643168c2 | 2646 | nfs4_close_sync(state, fmode); |
1da177e4 LT |
2647 | out: |
2648 | return status; | |
2649 | } | |
2650 | ||
2651 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2652 | { | |
16e42959 | 2653 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2654 | struct nfs_removeargs args = { |
1da177e4 | 2655 | .fh = NFS_FH(dir), |
4fdc17b2 TM |
2656 | .name.len = name->len, |
2657 | .name.name = name->name, | |
16e42959 TM |
2658 | .bitmask = server->attr_bitmask, |
2659 | }; | |
4fdc17b2 | 2660 | struct nfs_removeres res = { |
16e42959 | 2661 | .server = server, |
1da177e4 | 2662 | }; |
1da177e4 | 2663 | struct rpc_message msg = { |
4fdc17b2 TM |
2664 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
2665 | .rpc_argp = &args, | |
2666 | .rpc_resp = &res, | |
1da177e4 | 2667 | }; |
d346890b TM |
2668 | int status = -ENOMEM; |
2669 | ||
2670 | res.dir_attr = nfs_alloc_fattr(); | |
2671 | if (res.dir_attr == NULL) | |
2672 | goto out; | |
1da177e4 | 2673 | |
7c513058 | 2674 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
16e42959 TM |
2675 | if (status == 0) { |
2676 | update_changeattr(dir, &res.cinfo); | |
d346890b | 2677 | nfs_post_op_update_inode(dir, res.dir_attr); |
16e42959 | 2678 | } |
d346890b TM |
2679 | nfs_free_fattr(res.dir_attr); |
2680 | out: | |
1da177e4 LT |
2681 | return status; |
2682 | } | |
2683 | ||
2684 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2685 | { | |
2686 | struct nfs4_exception exception = { }; | |
2687 | int err; | |
2688 | do { | |
2689 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2690 | _nfs4_proc_remove(dir, name), | |
2691 | &exception); | |
2692 | } while (exception.retry); | |
2693 | return err; | |
2694 | } | |
2695 | ||
e4eff1a6 | 2696 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 2697 | { |
e4eff1a6 TM |
2698 | struct nfs_server *server = NFS_SERVER(dir); |
2699 | struct nfs_removeargs *args = msg->rpc_argp; | |
2700 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 2701 | |
a65318bf | 2702 | args->bitmask = server->cache_consistency_bitmask; |
e4eff1a6 | 2703 | res->server = server; |
dfb4f309 | 2704 | res->seq_res.sr_slot = NULL; |
1da177e4 | 2705 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
1da177e4 LT |
2706 | } |
2707 | ||
e4eff1a6 | 2708 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 2709 | { |
e4eff1a6 TM |
2710 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
2711 | ||
14516c3a TM |
2712 | if (!nfs4_sequence_done(task, &res->seq_res)) |
2713 | return 0; | |
9e33bed5 | 2714 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
2715 | return 0; |
2716 | update_changeattr(dir, &res->cinfo); | |
d346890b | 2717 | nfs_post_op_update_inode(dir, res->dir_attr); |
e4eff1a6 | 2718 | return 1; |
1da177e4 LT |
2719 | } |
2720 | ||
d3d4152a JL |
2721 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
2722 | { | |
2723 | struct nfs_server *server = NFS_SERVER(dir); | |
2724 | struct nfs_renameargs *arg = msg->rpc_argp; | |
2725 | struct nfs_renameres *res = msg->rpc_resp; | |
2726 | ||
2727 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
2728 | arg->bitmask = server->attr_bitmask; | |
2729 | res->server = server; | |
2730 | } | |
2731 | ||
2732 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
2733 | struct inode *new_dir) | |
2734 | { | |
2735 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
2736 | ||
2737 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
2738 | return 0; | |
2739 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
2740 | return 0; | |
2741 | ||
2742 | update_changeattr(old_dir, &res->old_cinfo); | |
2743 | nfs_post_op_update_inode(old_dir, res->old_fattr); | |
2744 | update_changeattr(new_dir, &res->new_cinfo); | |
2745 | nfs_post_op_update_inode(new_dir, res->new_fattr); | |
2746 | return 1; | |
2747 | } | |
2748 | ||
1da177e4 LT |
2749 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
2750 | struct inode *new_dir, struct qstr *new_name) | |
2751 | { | |
6caf2c82 | 2752 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 2753 | struct nfs_renameargs arg = { |
1da177e4 LT |
2754 | .old_dir = NFS_FH(old_dir), |
2755 | .new_dir = NFS_FH(new_dir), | |
2756 | .old_name = old_name, | |
2757 | .new_name = new_name, | |
6caf2c82 TM |
2758 | .bitmask = server->attr_bitmask, |
2759 | }; | |
e8582a8b | 2760 | struct nfs_renameres res = { |
6caf2c82 | 2761 | .server = server, |
1da177e4 | 2762 | }; |
1da177e4 LT |
2763 | struct rpc_message msg = { |
2764 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
2765 | .rpc_argp = &arg, | |
2766 | .rpc_resp = &res, | |
2767 | }; | |
011fff72 | 2768 | int status = -ENOMEM; |
1da177e4 | 2769 | |
011fff72 TM |
2770 | res.old_fattr = nfs_alloc_fattr(); |
2771 | res.new_fattr = nfs_alloc_fattr(); | |
2772 | if (res.old_fattr == NULL || res.new_fattr == NULL) | |
2773 | goto out; | |
1da177e4 | 2774 | |
7c513058 | 2775 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
2776 | if (!status) { |
2777 | update_changeattr(old_dir, &res.old_cinfo); | |
6caf2c82 | 2778 | nfs_post_op_update_inode(old_dir, res.old_fattr); |
1da177e4 | 2779 | update_changeattr(new_dir, &res.new_cinfo); |
6caf2c82 | 2780 | nfs_post_op_update_inode(new_dir, res.new_fattr); |
1da177e4 | 2781 | } |
011fff72 TM |
2782 | out: |
2783 | nfs_free_fattr(res.new_fattr); | |
2784 | nfs_free_fattr(res.old_fattr); | |
1da177e4 LT |
2785 | return status; |
2786 | } | |
2787 | ||
2788 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2789 | struct inode *new_dir, struct qstr *new_name) | |
2790 | { | |
2791 | struct nfs4_exception exception = { }; | |
2792 | int err; | |
2793 | do { | |
2794 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
2795 | _nfs4_proc_rename(old_dir, old_name, | |
2796 | new_dir, new_name), | |
2797 | &exception); | |
2798 | } while (exception.retry); | |
2799 | return err; | |
2800 | } | |
2801 | ||
2802 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2803 | { | |
91ba2eee | 2804 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2805 | struct nfs4_link_arg arg = { |
2806 | .fh = NFS_FH(inode), | |
2807 | .dir_fh = NFS_FH(dir), | |
2808 | .name = name, | |
91ba2eee TM |
2809 | .bitmask = server->attr_bitmask, |
2810 | }; | |
91ba2eee TM |
2811 | struct nfs4_link_res res = { |
2812 | .server = server, | |
1da177e4 | 2813 | }; |
1da177e4 LT |
2814 | struct rpc_message msg = { |
2815 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
2816 | .rpc_argp = &arg, | |
91ba2eee | 2817 | .rpc_resp = &res, |
1da177e4 | 2818 | }; |
136f2627 TM |
2819 | int status = -ENOMEM; |
2820 | ||
2821 | res.fattr = nfs_alloc_fattr(); | |
2822 | res.dir_attr = nfs_alloc_fattr(); | |
2823 | if (res.fattr == NULL || res.dir_attr == NULL) | |
2824 | goto out; | |
1da177e4 | 2825 | |
7c513058 | 2826 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
2827 | if (!status) { |
2828 | update_changeattr(dir, &res.cinfo); | |
2829 | nfs_post_op_update_inode(dir, res.dir_attr); | |
73a3d07c | 2830 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 2831 | } |
136f2627 TM |
2832 | out: |
2833 | nfs_free_fattr(res.dir_attr); | |
2834 | nfs_free_fattr(res.fattr); | |
1da177e4 LT |
2835 | return status; |
2836 | } | |
2837 | ||
2838 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2839 | { | |
2840 | struct nfs4_exception exception = { }; | |
2841 | int err; | |
2842 | do { | |
2843 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2844 | _nfs4_proc_link(inode, dir, name), | |
2845 | &exception); | |
2846 | } while (exception.retry); | |
2847 | return err; | |
2848 | } | |
2849 | ||
57dc9a57 TM |
2850 | struct nfs4_createdata { |
2851 | struct rpc_message msg; | |
2852 | struct nfs4_create_arg arg; | |
2853 | struct nfs4_create_res res; | |
2854 | struct nfs_fh fh; | |
2855 | struct nfs_fattr fattr; | |
2856 | struct nfs_fattr dir_fattr; | |
2857 | }; | |
2858 | ||
2859 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
2860 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
2861 | { | |
2862 | struct nfs4_createdata *data; | |
2863 | ||
2864 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
2865 | if (data != NULL) { | |
2866 | struct nfs_server *server = NFS_SERVER(dir); | |
2867 | ||
2868 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
2869 | data->msg.rpc_argp = &data->arg; | |
2870 | data->msg.rpc_resp = &data->res; | |
2871 | data->arg.dir_fh = NFS_FH(dir); | |
2872 | data->arg.server = server; | |
2873 | data->arg.name = name; | |
2874 | data->arg.attrs = sattr; | |
2875 | data->arg.ftype = ftype; | |
2876 | data->arg.bitmask = server->attr_bitmask; | |
2877 | data->res.server = server; | |
2878 | data->res.fh = &data->fh; | |
2879 | data->res.fattr = &data->fattr; | |
2880 | data->res.dir_fattr = &data->dir_fattr; | |
2881 | nfs_fattr_init(data->res.fattr); | |
2882 | nfs_fattr_init(data->res.dir_fattr); | |
2883 | } | |
2884 | return data; | |
2885 | } | |
2886 | ||
2887 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
2888 | { | |
7c513058 | 2889 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 2890 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
2891 | if (status == 0) { |
2892 | update_changeattr(dir, &data->res.dir_cinfo); | |
2893 | nfs_post_op_update_inode(dir, data->res.dir_fattr); | |
2894 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); | |
2895 | } | |
2896 | return status; | |
2897 | } | |
2898 | ||
2899 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
2900 | { | |
2901 | kfree(data); | |
2902 | } | |
2903 | ||
4f390c15 | 2904 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2905 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 2906 | { |
57dc9a57 TM |
2907 | struct nfs4_createdata *data; |
2908 | int status = -ENAMETOOLONG; | |
1da177e4 | 2909 | |
94a6d753 | 2910 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 2911 | goto out; |
4f390c15 | 2912 | |
57dc9a57 TM |
2913 | status = -ENOMEM; |
2914 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
2915 | if (data == NULL) | |
2916 | goto out; | |
2917 | ||
2918 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
2919 | data->arg.u.symlink.pages = &page; | |
2920 | data->arg.u.symlink.len = len; | |
1da177e4 | 2921 | |
57dc9a57 TM |
2922 | status = nfs4_do_create(dir, dentry, data); |
2923 | ||
2924 | nfs4_free_createdata(data); | |
2925 | out: | |
1da177e4 LT |
2926 | return status; |
2927 | } | |
2928 | ||
4f390c15 | 2929 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2930 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
2931 | { |
2932 | struct nfs4_exception exception = { }; | |
2933 | int err; | |
2934 | do { | |
2935 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
2936 | _nfs4_proc_symlink(dir, dentry, page, |
2937 | len, sattr), | |
1da177e4 LT |
2938 | &exception); |
2939 | } while (exception.retry); | |
2940 | return err; | |
2941 | } | |
2942 | ||
2943 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2944 | struct iattr *sattr) | |
2945 | { | |
57dc9a57 TM |
2946 | struct nfs4_createdata *data; |
2947 | int status = -ENOMEM; | |
1da177e4 | 2948 | |
57dc9a57 TM |
2949 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
2950 | if (data == NULL) | |
2951 | goto out; | |
2952 | ||
2953 | status = nfs4_do_create(dir, dentry, data); | |
2954 | ||
2955 | nfs4_free_createdata(data); | |
2956 | out: | |
1da177e4 LT |
2957 | return status; |
2958 | } | |
2959 | ||
2960 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2961 | struct iattr *sattr) | |
2962 | { | |
2963 | struct nfs4_exception exception = { }; | |
2964 | int err; | |
a8a5da99 AK |
2965 | |
2966 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
2967 | do { |
2968 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2969 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
2970 | &exception); | |
2971 | } while (exception.retry); | |
2972 | return err; | |
2973 | } | |
2974 | ||
2975 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 2976 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
2977 | { |
2978 | struct inode *dir = dentry->d_inode; | |
2979 | struct nfs4_readdir_arg args = { | |
2980 | .fh = NFS_FH(dir), | |
56e4ebf8 | 2981 | .pages = pages, |
1da177e4 LT |
2982 | .pgbase = 0, |
2983 | .count = count, | |
96d25e53 | 2984 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 2985 | .plus = plus, |
1da177e4 LT |
2986 | }; |
2987 | struct nfs4_readdir_res res; | |
2988 | struct rpc_message msg = { | |
2989 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
2990 | .rpc_argp = &args, | |
2991 | .rpc_resp = &res, | |
2992 | .rpc_cred = cred, | |
2993 | }; | |
2994 | int status; | |
2995 | ||
3110ff80 | 2996 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
2997 | dentry->d_parent->d_name.name, |
2998 | dentry->d_name.name, | |
2999 | (unsigned long long)cookie); | |
1da177e4 LT |
3000 | nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args); |
3001 | res.pgbase = args.pgbase; | |
7c513058 | 3002 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3003 | if (status >= 0) { |
1da177e4 | 3004 | memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3005 | status += args.pgbase; |
3006 | } | |
c4812998 TM |
3007 | |
3008 | nfs_invalidate_atime(dir); | |
3009 | ||
3110ff80 | 3010 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3011 | return status; |
3012 | } | |
3013 | ||
3014 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3015 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3016 | { |
3017 | struct nfs4_exception exception = { }; | |
3018 | int err; | |
3019 | do { | |
3020 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
3021 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 3022 | pages, count, plus), |
1da177e4 LT |
3023 | &exception); |
3024 | } while (exception.retry); | |
3025 | return err; | |
3026 | } | |
3027 | ||
3028 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3029 | struct iattr *sattr, dev_t rdev) | |
3030 | { | |
57dc9a57 TM |
3031 | struct nfs4_createdata *data; |
3032 | int mode = sattr->ia_mode; | |
3033 | int status = -ENOMEM; | |
1da177e4 LT |
3034 | |
3035 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
3036 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
57dc9a57 TM |
3037 | |
3038 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); | |
3039 | if (data == NULL) | |
3040 | goto out; | |
3041 | ||
1da177e4 | 3042 | if (S_ISFIFO(mode)) |
57dc9a57 | 3043 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3044 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3045 | data->arg.ftype = NF4BLK; |
3046 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3047 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3048 | } |
3049 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3050 | data->arg.ftype = NF4CHR; |
3051 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3052 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 | 3053 | } |
1da177e4 | 3054 | |
57dc9a57 TM |
3055 | status = nfs4_do_create(dir, dentry, data); |
3056 | ||
3057 | nfs4_free_createdata(data); | |
3058 | out: | |
1da177e4 LT |
3059 | return status; |
3060 | } | |
3061 | ||
3062 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3063 | struct iattr *sattr, dev_t rdev) | |
3064 | { | |
3065 | struct nfs4_exception exception = { }; | |
3066 | int err; | |
a8a5da99 AK |
3067 | |
3068 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3069 | do { |
3070 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3071 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
3072 | &exception); | |
3073 | } while (exception.retry); | |
3074 | return err; | |
3075 | } | |
3076 | ||
3077 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3078 | struct nfs_fsstat *fsstat) | |
3079 | { | |
3080 | struct nfs4_statfs_arg args = { | |
3081 | .fh = fhandle, | |
3082 | .bitmask = server->attr_bitmask, | |
3083 | }; | |
24ad148a BH |
3084 | struct nfs4_statfs_res res = { |
3085 | .fsstat = fsstat, | |
3086 | }; | |
1da177e4 LT |
3087 | struct rpc_message msg = { |
3088 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3089 | .rpc_argp = &args, | |
24ad148a | 3090 | .rpc_resp = &res, |
1da177e4 LT |
3091 | }; |
3092 | ||
0e574af1 | 3093 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3094 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3095 | } |
3096 | ||
3097 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3098 | { | |
3099 | struct nfs4_exception exception = { }; | |
3100 | int err; | |
3101 | do { | |
3102 | err = nfs4_handle_exception(server, | |
3103 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3104 | &exception); | |
3105 | } while (exception.retry); | |
3106 | return err; | |
3107 | } | |
3108 | ||
3109 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3110 | struct nfs_fsinfo *fsinfo) | |
3111 | { | |
3112 | struct nfs4_fsinfo_arg args = { | |
3113 | .fh = fhandle, | |
3114 | .bitmask = server->attr_bitmask, | |
3115 | }; | |
3dda5e43 BH |
3116 | struct nfs4_fsinfo_res res = { |
3117 | .fsinfo = fsinfo, | |
3118 | }; | |
1da177e4 LT |
3119 | struct rpc_message msg = { |
3120 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3121 | .rpc_argp = &args, | |
3dda5e43 | 3122 | .rpc_resp = &res, |
1da177e4 LT |
3123 | }; |
3124 | ||
7c513058 | 3125 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3126 | } |
3127 | ||
3128 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3129 | { | |
3130 | struct nfs4_exception exception = { }; | |
3131 | int err; | |
3132 | ||
3133 | do { | |
3134 | err = nfs4_handle_exception(server, | |
3135 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
3136 | &exception); | |
3137 | } while (exception.retry); | |
3138 | return err; | |
3139 | } | |
3140 | ||
3141 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3142 | { | |
0e574af1 | 3143 | nfs_fattr_init(fsinfo->fattr); |
1da177e4 LT |
3144 | return nfs4_do_fsinfo(server, fhandle, fsinfo); |
3145 | } | |
3146 | ||
3147 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3148 | struct nfs_pathconf *pathconf) | |
3149 | { | |
3150 | struct nfs4_pathconf_arg args = { | |
3151 | .fh = fhandle, | |
3152 | .bitmask = server->attr_bitmask, | |
3153 | }; | |
d45b2989 BH |
3154 | struct nfs4_pathconf_res res = { |
3155 | .pathconf = pathconf, | |
3156 | }; | |
1da177e4 LT |
3157 | struct rpc_message msg = { |
3158 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3159 | .rpc_argp = &args, | |
d45b2989 | 3160 | .rpc_resp = &res, |
1da177e4 LT |
3161 | }; |
3162 | ||
3163 | /* None of the pathconf attributes are mandatory to implement */ | |
3164 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3165 | memset(pathconf, 0, sizeof(*pathconf)); | |
3166 | return 0; | |
3167 | } | |
3168 | ||
0e574af1 | 3169 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3170 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3171 | } |
3172 | ||
3173 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3174 | struct nfs_pathconf *pathconf) | |
3175 | { | |
3176 | struct nfs4_exception exception = { }; | |
3177 | int err; | |
3178 | ||
3179 | do { | |
3180 | err = nfs4_handle_exception(server, | |
3181 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3182 | &exception); | |
3183 | } while (exception.retry); | |
3184 | return err; | |
3185 | } | |
3186 | ||
d20581aa BH |
3187 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3188 | { | |
3189 | nfs_invalidate_atime(data->inode); | |
3190 | } | |
3191 | ||
cbdabc7f | 3192 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3193 | { |
ec06c096 | 3194 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 3195 | |
9e33bed5 | 3196 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3197 | rpc_restart_call_prepare(task); |
ec06c096 | 3198 | return -EAGAIN; |
1da177e4 | 3199 | } |
8850df99 | 3200 | |
d20581aa | 3201 | __nfs4_read_done_cb(data); |
1da177e4 | 3202 | if (task->tk_status > 0) |
ec06c096 TM |
3203 | renew_lease(server, data->timestamp); |
3204 | return 0; | |
1da177e4 LT |
3205 | } |
3206 | ||
cbdabc7f AA |
3207 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3208 | { | |
3209 | ||
3210 | dprintk("--> %s\n", __func__); | |
3211 | ||
3212 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3213 | return -EAGAIN; | |
3214 | ||
d20581aa BH |
3215 | return data->read_done_cb ? data->read_done_cb(task, data) : |
3216 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
3217 | } |
3218 | ||
bdc7f021 | 3219 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3220 | { |
1da177e4 | 3221 | data->timestamp = jiffies; |
cbdabc7f | 3222 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3223 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
1da177e4 LT |
3224 | } |
3225 | ||
cbdabc7f AA |
3226 | /* Reset the the nfs_read_data to send the read to the MDS. */ |
3227 | void nfs4_reset_read(struct rpc_task *task, struct nfs_read_data *data) | |
3228 | { | |
3229 | dprintk("%s Reset task for i/o through\n", __func__); | |
3230 | put_lseg(data->lseg); | |
3231 | data->lseg = NULL; | |
3232 | /* offsets will differ in the dense stripe case */ | |
3233 | data->args.offset = data->mds_offset; | |
3234 | data->ds_clp = NULL; | |
3235 | data->args.fh = NFS_FH(data->inode); | |
3236 | data->read_done_cb = nfs4_read_done_cb; | |
3237 | task->tk_ops = data->mds_ops; | |
3238 | rpc_task_reset_client(task, NFS_CLIENT(data->inode)); | |
3239 | } | |
3240 | EXPORT_SYMBOL_GPL(nfs4_reset_read); | |
3241 | ||
b029bc9b | 3242 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3243 | { |
1da177e4 LT |
3244 | struct inode *inode = data->inode; |
3245 | ||
9e33bed5 | 3246 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3247 | rpc_restart_call_prepare(task); |
788e7a89 | 3248 | return -EAGAIN; |
1da177e4 | 3249 | } |
4f9838c7 | 3250 | if (task->tk_status >= 0) { |
1da177e4 | 3251 | renew_lease(NFS_SERVER(inode), data->timestamp); |
70ca8852 | 3252 | nfs_post_op_update_inode_force_wcc(inode, data->res.fattr); |
4f9838c7 | 3253 | } |
788e7a89 | 3254 | return 0; |
1da177e4 LT |
3255 | } |
3256 | ||
b029bc9b FI |
3257 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3258 | { | |
3259 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3260 | return -EAGAIN; | |
d20581aa BH |
3261 | return data->write_done_cb ? data->write_done_cb(task, data) : |
3262 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
3263 | } |
3264 | ||
a69aef14 FI |
3265 | /* Reset the the nfs_write_data to send the write to the MDS. */ |
3266 | void nfs4_reset_write(struct rpc_task *task, struct nfs_write_data *data) | |
3267 | { | |
3268 | dprintk("%s Reset task for i/o through\n", __func__); | |
3269 | put_lseg(data->lseg); | |
3270 | data->lseg = NULL; | |
3271 | data->ds_clp = NULL; | |
3272 | data->write_done_cb = nfs4_write_done_cb; | |
3273 | data->args.fh = NFS_FH(data->inode); | |
3274 | data->args.bitmask = data->res.server->cache_consistency_bitmask; | |
3275 | data->args.offset = data->mds_offset; | |
3276 | data->res.fattr = &data->fattr; | |
3277 | task->tk_ops = data->mds_ops; | |
3278 | rpc_task_reset_client(task, NFS_CLIENT(data->inode)); | |
3279 | } | |
3280 | EXPORT_SYMBOL_GPL(nfs4_reset_write); | |
3281 | ||
bdc7f021 | 3282 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3283 | { |
bdc7f021 TM |
3284 | struct nfs_server *server = NFS_SERVER(data->inode); |
3285 | ||
7ffd1064 FI |
3286 | if (data->lseg) { |
3287 | data->args.bitmask = NULL; | |
3288 | data->res.fattr = NULL; | |
3289 | } else | |
3290 | data->args.bitmask = server->cache_consistency_bitmask; | |
b029bc9b FI |
3291 | if (!data->write_done_cb) |
3292 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3293 | data->res.server = server; |
1da177e4 LT |
3294 | data->timestamp = jiffies; |
3295 | ||
bdc7f021 | 3296 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
1da177e4 LT |
3297 | } |
3298 | ||
5f452431 | 3299 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3300 | { |
1da177e4 | 3301 | struct inode *inode = data->inode; |
14516c3a | 3302 | |
9e33bed5 | 3303 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
d00c5d43 | 3304 | rpc_restart_call_prepare(task); |
788e7a89 | 3305 | return -EAGAIN; |
1da177e4 | 3306 | } |
9e08a3c5 | 3307 | nfs_refresh_inode(inode, data->res.fattr); |
788e7a89 | 3308 | return 0; |
1da177e4 LT |
3309 | } |
3310 | ||
5f452431 FI |
3311 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data) |
3312 | { | |
3313 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3314 | return -EAGAIN; | |
3315 | return data->write_done_cb(task, data); | |
3316 | } | |
3317 | ||
bdc7f021 | 3318 | static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3319 | { |
788e7a89 | 3320 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce FI |
3321 | |
3322 | if (data->lseg) { | |
3323 | data->args.bitmask = NULL; | |
3324 | data->res.fattr = NULL; | |
3325 | } else | |
3326 | data->args.bitmask = server->cache_consistency_bitmask; | |
5f452431 FI |
3327 | if (!data->write_done_cb) |
3328 | data->write_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 3329 | data->res.server = server; |
bdc7f021 | 3330 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
1da177e4 LT |
3331 | } |
3332 | ||
9bc4e3ca CL |
3333 | struct nfs4_renewdata { |
3334 | struct nfs_client *client; | |
3335 | unsigned long timestamp; | |
3336 | }; | |
3337 | ||
1da177e4 LT |
3338 | /* |
3339 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3340 | * standalone procedure for queueing an asynchronous RENEW. | |
3341 | */ | |
9bc4e3ca | 3342 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3343 | { |
9bc4e3ca CL |
3344 | struct nfs4_renewdata *data = calldata; |
3345 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3346 | |
0851de06 AB |
3347 | if (atomic_read(&clp->cl_count) > 1) |
3348 | nfs4_schedule_state_renewal(clp); | |
3349 | nfs_put_client(clp); | |
9bc4e3ca | 3350 | kfree(data); |
dc96aef9 AB |
3351 | } |
3352 | ||
9bc4e3ca | 3353 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3354 | { |
9bc4e3ca CL |
3355 | struct nfs4_renewdata *data = calldata; |
3356 | struct nfs_client *clp = data->client; | |
3357 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3358 | |
3359 | if (task->tk_status < 0) { | |
95baa25c | 3360 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
3361 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
3362 | return; | |
3363 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 3364 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
3365 | return; |
3366 | } | |
3367 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 3368 | } |
452e9352 | 3369 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3370 | } |
3371 | ||
963d8fe5 TM |
3372 | static const struct rpc_call_ops nfs4_renew_ops = { |
3373 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3374 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3375 | }; |
3376 | ||
2f60ea6b | 3377 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
3378 | { |
3379 | struct rpc_message msg = { | |
3380 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3381 | .rpc_argp = clp, | |
b4454fe1 | 3382 | .rpc_cred = cred, |
1da177e4 | 3383 | }; |
9bc4e3ca | 3384 | struct nfs4_renewdata *data; |
1da177e4 | 3385 | |
2f60ea6b TM |
3386 | if (renew_flags == 0) |
3387 | return 0; | |
0851de06 AB |
3388 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3389 | return -EIO; | |
b569ad34 | 3390 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
3391 | if (data == NULL) |
3392 | return -ENOMEM; | |
3393 | data->client = clp; | |
3394 | data->timestamp = jiffies; | |
1da177e4 | 3395 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, |
9bc4e3ca | 3396 | &nfs4_renew_ops, data); |
1da177e4 LT |
3397 | } |
3398 | ||
8534d4ec | 3399 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3400 | { |
3401 | struct rpc_message msg = { | |
3402 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3403 | .rpc_argp = clp, | |
b4454fe1 | 3404 | .rpc_cred = cred, |
1da177e4 LT |
3405 | }; |
3406 | unsigned long now = jiffies; | |
3407 | int status; | |
3408 | ||
3409 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3410 | if (status < 0) | |
3411 | return status; | |
452e9352 | 3412 | do_renew_lease(clp, now); |
1da177e4 LT |
3413 | return 0; |
3414 | } | |
3415 | ||
aa1870af BF |
3416 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3417 | { | |
3418 | return (server->caps & NFS_CAP_ACLS) | |
3419 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3420 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3421 | } | |
3422 | ||
3423 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that | |
3424 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on | |
3425 | * the stack. | |
3426 | */ | |
3427 | #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT) | |
3428 | ||
e9e3d724 NH |
3429 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
3430 | struct page **pages, unsigned int *pgbase) | |
3431 | { | |
3432 | struct page *newpage, **spages; | |
3433 | int rc = 0; | |
3434 | size_t len; | |
3435 | spages = pages; | |
3436 | ||
3437 | do { | |
43b7c3f0 | 3438 | len = min_t(size_t, PAGE_CACHE_SIZE, buflen); |
e9e3d724 NH |
3439 | newpage = alloc_page(GFP_KERNEL); |
3440 | ||
3441 | if (newpage == NULL) | |
3442 | goto unwind; | |
3443 | memcpy(page_address(newpage), buf, len); | |
3444 | buf += len; | |
3445 | buflen -= len; | |
3446 | *pages++ = newpage; | |
3447 | rc++; | |
3448 | } while (buflen != 0); | |
3449 | ||
3450 | return rc; | |
3451 | ||
3452 | unwind: | |
3453 | for(; rc > 0; rc--) | |
3454 | __free_page(spages[rc-1]); | |
3455 | return -ENOMEM; | |
3456 | } | |
3457 | ||
e50a1c2e BF |
3458 | struct nfs4_cached_acl { |
3459 | int cached; | |
3460 | size_t len; | |
3e9d4154 | 3461 | char data[0]; |
e50a1c2e BF |
3462 | }; |
3463 | ||
3464 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3465 | { | |
3466 | struct nfs_inode *nfsi = NFS_I(inode); | |
3467 | ||
3468 | spin_lock(&inode->i_lock); | |
3469 | kfree(nfsi->nfs4_acl); | |
3470 | nfsi->nfs4_acl = acl; | |
3471 | spin_unlock(&inode->i_lock); | |
3472 | } | |
3473 | ||
3474 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3475 | { | |
3476 | nfs4_set_cached_acl(inode, NULL); | |
3477 | } | |
3478 | ||
3479 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3480 | { | |
3481 | struct nfs_inode *nfsi = NFS_I(inode); | |
3482 | struct nfs4_cached_acl *acl; | |
3483 | int ret = -ENOENT; | |
3484 | ||
3485 | spin_lock(&inode->i_lock); | |
3486 | acl = nfsi->nfs4_acl; | |
3487 | if (acl == NULL) | |
3488 | goto out; | |
3489 | if (buf == NULL) /* user is just asking for length */ | |
3490 | goto out_len; | |
3491 | if (acl->cached == 0) | |
3492 | goto out; | |
3493 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3494 | if (acl->len > buflen) | |
3495 | goto out; | |
3496 | memcpy(buf, acl->data, acl->len); | |
3497 | out_len: | |
3498 | ret = acl->len; | |
3499 | out: | |
3500 | spin_unlock(&inode->i_lock); | |
3501 | return ret; | |
3502 | } | |
3503 | ||
3504 | static void nfs4_write_cached_acl(struct inode *inode, const char *buf, size_t acl_len) | |
3505 | { | |
3506 | struct nfs4_cached_acl *acl; | |
3507 | ||
3508 | if (buf && acl_len <= PAGE_SIZE) { | |
3509 | acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL); | |
3510 | if (acl == NULL) | |
3511 | goto out; | |
3512 | acl->cached = 1; | |
3513 | memcpy(acl->data, buf, acl_len); | |
3514 | } else { | |
3515 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3516 | if (acl == NULL) | |
3517 | goto out; | |
3518 | acl->cached = 0; | |
3519 | } | |
3520 | acl->len = acl_len; | |
3521 | out: | |
3522 | nfs4_set_cached_acl(inode, acl); | |
3523 | } | |
3524 | ||
bf118a34 AA |
3525 | /* |
3526 | * The getxattr API returns the required buffer length when called with a | |
3527 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
3528 | * the required buf. On a NULL buf, we send a page of data to the server | |
3529 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
3530 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
3531 | * the cache. If not so, we throw away the page, and cache the required | |
3532 | * length. The next getxattr call will then produce another round trip to | |
3533 | * the server, this time with the input buf of the required size. | |
3534 | */ | |
16b4289c | 3535 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3536 | { |
bf118a34 | 3537 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
3538 | struct nfs_getaclargs args = { |
3539 | .fh = NFS_FH(inode), | |
3540 | .acl_pages = pages, | |
3541 | .acl_len = buflen, | |
3542 | }; | |
663c79b3 BH |
3543 | struct nfs_getaclres res = { |
3544 | .acl_len = buflen, | |
3545 | }; | |
e50a1c2e | 3546 | void *resp_buf; |
aa1870af BF |
3547 | struct rpc_message msg = { |
3548 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3549 | .rpc_argp = &args, | |
663c79b3 | 3550 | .rpc_resp = &res, |
aa1870af | 3551 | }; |
bf118a34 | 3552 | int ret = -ENOMEM, npages, i, acl_len = 0; |
aa1870af | 3553 | |
bf118a34 AA |
3554 | npages = (buflen + PAGE_SIZE - 1) >> PAGE_SHIFT; |
3555 | /* As long as we're doing a round trip to the server anyway, | |
3556 | * let's be prepared for a page of acl data. */ | |
3557 | if (npages == 0) | |
3558 | npages = 1; | |
3559 | ||
3560 | for (i = 0; i < npages; i++) { | |
3561 | pages[i] = alloc_page(GFP_KERNEL); | |
3562 | if (!pages[i]) | |
3563 | goto out_free; | |
3564 | } | |
3565 | if (npages > 1) { | |
3566 | /* for decoding across pages */ | |
3567 | args.acl_scratch = alloc_page(GFP_KERNEL); | |
3568 | if (!args.acl_scratch) | |
3569 | goto out_free; | |
e50a1c2e | 3570 | } |
bf118a34 AA |
3571 | args.acl_len = npages * PAGE_SIZE; |
3572 | args.acl_pgbase = 0; | |
3573 | /* Let decode_getfacl know not to fail if the ACL data is larger than | |
3574 | * the page we send as a guess */ | |
3575 | if (buf == NULL) | |
3576 | res.acl_flags |= NFS4_ACL_LEN_REQUEST; | |
3577 | resp_buf = page_address(pages[0]); | |
3578 | ||
3579 | dprintk("%s buf %p buflen %ld npages %d args.acl_len %ld\n", | |
3580 | __func__, buf, buflen, npages, args.acl_len); | |
3581 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
3582 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
3583 | if (ret) |
3584 | goto out_free; | |
bf118a34 AA |
3585 | |
3586 | acl_len = res.acl_len - res.acl_data_offset; | |
3587 | if (acl_len > args.acl_len) | |
3588 | nfs4_write_cached_acl(inode, NULL, acl_len); | |
e50a1c2e | 3589 | else |
bf118a34 AA |
3590 | nfs4_write_cached_acl(inode, resp_buf + res.acl_data_offset, |
3591 | acl_len); | |
e50a1c2e BF |
3592 | if (buf) { |
3593 | ret = -ERANGE; | |
bf118a34 | 3594 | if (acl_len > buflen) |
e50a1c2e | 3595 | goto out_free; |
bf118a34 AA |
3596 | _copy_from_pages(buf, pages, res.acl_data_offset, |
3597 | res.acl_len); | |
e50a1c2e | 3598 | } |
bf118a34 | 3599 | ret = acl_len; |
e50a1c2e | 3600 | out_free: |
bf118a34 AA |
3601 | for (i = 0; i < npages; i++) |
3602 | if (pages[i]) | |
3603 | __free_page(pages[i]); | |
3604 | if (args.acl_scratch) | |
3605 | __free_page(args.acl_scratch); | |
aa1870af BF |
3606 | return ret; |
3607 | } | |
3608 | ||
16b4289c TM |
3609 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
3610 | { | |
3611 | struct nfs4_exception exception = { }; | |
3612 | ssize_t ret; | |
3613 | do { | |
3614 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
3615 | if (ret >= 0) | |
3616 | break; | |
3617 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
3618 | } while (exception.retry); | |
3619 | return ret; | |
3620 | } | |
3621 | ||
e50a1c2e BF |
3622 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
3623 | { | |
3624 | struct nfs_server *server = NFS_SERVER(inode); | |
3625 | int ret; | |
3626 | ||
3627 | if (!nfs4_server_supports_acls(server)) | |
3628 | return -EOPNOTSUPP; | |
3629 | ret = nfs_revalidate_inode(server, inode); | |
3630 | if (ret < 0) | |
3631 | return ret; | |
08a22b39 AK |
3632 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
3633 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
3634 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
3635 | if (ret != -ENOENT) | |
bf118a34 AA |
3636 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
3637 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
3638 | return ret; |
3639 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
3640 | } | |
3641 | ||
16b4289c | 3642 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
3643 | { |
3644 | struct nfs_server *server = NFS_SERVER(inode); | |
3645 | struct page *pages[NFS4ACL_MAXPAGES]; | |
3646 | struct nfs_setaclargs arg = { | |
3647 | .fh = NFS_FH(inode), | |
3648 | .acl_pages = pages, | |
3649 | .acl_len = buflen, | |
3650 | }; | |
73c403a9 | 3651 | struct nfs_setaclres res; |
4b580ee3 BF |
3652 | struct rpc_message msg = { |
3653 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
3654 | .rpc_argp = &arg, | |
73c403a9 | 3655 | .rpc_resp = &res, |
4b580ee3 | 3656 | }; |
e9e3d724 | 3657 | int ret, i; |
4b580ee3 BF |
3658 | |
3659 | if (!nfs4_server_supports_acls(server)) | |
3660 | return -EOPNOTSUPP; | |
e9e3d724 NH |
3661 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
3662 | if (i < 0) | |
3663 | return i; | |
642ac549 | 3664 | nfs_inode_return_delegation(inode); |
7c513058 | 3665 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
3666 | |
3667 | /* | |
3668 | * Free each page after tx, so the only ref left is | |
3669 | * held by the network stack | |
3670 | */ | |
3671 | for (; i > 0; i--) | |
3672 | put_page(pages[i-1]); | |
3673 | ||
08a22b39 AK |
3674 | /* |
3675 | * Acl update can result in inode attribute update. | |
3676 | * so mark the attribute cache invalid. | |
3677 | */ | |
3678 | spin_lock(&inode->i_lock); | |
3679 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
3680 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
3681 | nfs_access_zap_cache(inode); |
3682 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
3683 | return ret; |
3684 | } | |
3685 | ||
16b4289c TM |
3686 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
3687 | { | |
3688 | struct nfs4_exception exception = { }; | |
3689 | int err; | |
3690 | do { | |
3691 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3692 | __nfs4_proc_set_acl(inode, buf, buflen), | |
3693 | &exception); | |
3694 | } while (exception.retry); | |
3695 | return err; | |
3696 | } | |
3697 | ||
1da177e4 | 3698 | static int |
aa5190d0 | 3699 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 3700 | { |
aa5190d0 TM |
3701 | struct nfs_client *clp = server->nfs_client; |
3702 | ||
3703 | if (task->tk_status >= 0) | |
1da177e4 LT |
3704 | return 0; |
3705 | switch(task->tk_status) { | |
9e33bed5 TM |
3706 | case -NFS4ERR_ADMIN_REVOKED: |
3707 | case -NFS4ERR_BAD_STATEID: | |
3708 | case -NFS4ERR_OPENMODE: | |
3709 | if (state == NULL) | |
3710 | break; | |
0400a6b0 TM |
3711 | nfs4_schedule_stateid_recovery(server, state); |
3712 | goto wait_on_recovery; | |
0ced63d1 TM |
3713 | case -NFS4ERR_EXPIRED: |
3714 | if (state != NULL) | |
3715 | nfs4_schedule_stateid_recovery(server, state); | |
1da177e4 | 3716 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 3717 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
3718 | nfs4_schedule_lease_recovery(clp); |
3719 | goto wait_on_recovery; | |
4745e315 AA |
3720 | #if defined(CONFIG_NFS_V4_1) |
3721 | case -NFS4ERR_BADSESSION: | |
3722 | case -NFS4ERR_BADSLOT: | |
3723 | case -NFS4ERR_BAD_HIGH_SLOT: | |
3724 | case -NFS4ERR_DEADSESSION: | |
3725 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
3726 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
3727 | case -NFS4ERR_SEQ_MISORDERED: | |
3728 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
3729 | task->tk_status); | |
0400a6b0 | 3730 | nfs4_schedule_session_recovery(clp->cl_session); |
4745e315 AA |
3731 | task->tk_status = 0; |
3732 | return -EAGAIN; | |
3733 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 3734 | case -NFS4ERR_DELAY: |
aa5190d0 | 3735 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 3736 | case -NFS4ERR_GRACE: |
2c643488 | 3737 | case -EKEYEXPIRED: |
1da177e4 LT |
3738 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
3739 | task->tk_status = 0; | |
3740 | return -EAGAIN; | |
a8a4ae3a | 3741 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
3742 | case -NFS4ERR_OLD_STATEID: |
3743 | task->tk_status = 0; | |
3744 | return -EAGAIN; | |
3745 | } | |
3746 | task->tk_status = nfs4_map_errors(task->tk_status); | |
3747 | return 0; | |
0400a6b0 | 3748 | wait_on_recovery: |
a2c0b9e2 | 3749 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
3750 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
3751 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
3752 | task->tk_status = 0; | |
3753 | return -EAGAIN; | |
1da177e4 LT |
3754 | } |
3755 | ||
bb8b27e5 TM |
3756 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
3757 | unsigned short port, struct rpc_cred *cred, | |
3758 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
3759 | { |
3760 | nfs4_verifier sc_verifier; | |
3761 | struct nfs4_setclientid setclientid = { | |
3762 | .sc_verifier = &sc_verifier, | |
3763 | .sc_prog = program, | |
f4eecd5d | 3764 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
3765 | }; |
3766 | struct rpc_message msg = { | |
3767 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
3768 | .rpc_argp = &setclientid, | |
bb8b27e5 | 3769 | .rpc_resp = res, |
286d7d6a | 3770 | .rpc_cred = cred, |
1da177e4 | 3771 | }; |
bc4785cd | 3772 | __be32 *p; |
1da177e4 LT |
3773 | int loop = 0; |
3774 | int status; | |
3775 | ||
bc4785cd | 3776 | p = (__be32*)sc_verifier.data; |
1da177e4 LT |
3777 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); |
3778 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
3779 | ||
3780 | for(;;) { | |
3781 | setclientid.sc_name_len = scnprintf(setclientid.sc_name, | |
69dd716c | 3782 | sizeof(setclientid.sc_name), "%s/%s %s %s %u", |
d4d3c507 CL |
3783 | clp->cl_ipaddr, |
3784 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3785 | RPC_DISPLAY_ADDR), | |
69dd716c TM |
3786 | rpc_peeraddr2str(clp->cl_rpcclient, |
3787 | RPC_DISPLAY_PROTO), | |
78ea323b | 3788 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
1da177e4 LT |
3789 | clp->cl_id_uniquifier); |
3790 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, | |
d4d3c507 CL |
3791 | sizeof(setclientid.sc_netid), |
3792 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3793 | RPC_DISPLAY_NETID)); | |
1da177e4 | 3794 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 3795 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
3796 | clp->cl_ipaddr, port >> 8, port & 255); |
3797 | ||
1bd714f2 | 3798 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
3799 | if (status != -NFS4ERR_CLID_INUSE) |
3800 | break; | |
fd954ae1 TM |
3801 | if (loop != 0) { |
3802 | ++clp->cl_id_uniquifier; | |
1da177e4 | 3803 | break; |
fd954ae1 TM |
3804 | } |
3805 | ++loop; | |
3806 | ssleep(clp->cl_lease_time / HZ + 1); | |
1da177e4 LT |
3807 | } |
3808 | return status; | |
3809 | } | |
3810 | ||
fd954ae1 | 3811 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
3812 | struct nfs4_setclientid_res *arg, |
3813 | struct rpc_cred *cred) | |
1da177e4 LT |
3814 | { |
3815 | struct nfs_fsinfo fsinfo; | |
3816 | struct rpc_message msg = { | |
3817 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 3818 | .rpc_argp = arg, |
1da177e4 | 3819 | .rpc_resp = &fsinfo, |
286d7d6a | 3820 | .rpc_cred = cred, |
1da177e4 LT |
3821 | }; |
3822 | unsigned long now; | |
3823 | int status; | |
3824 | ||
3825 | now = jiffies; | |
1bd714f2 | 3826 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
3827 | if (status == 0) { |
3828 | spin_lock(&clp->cl_lock); | |
3829 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
3830 | clp->cl_last_renewal = now; | |
3831 | spin_unlock(&clp->cl_lock); | |
3832 | } | |
3833 | return status; | |
3834 | } | |
3835 | ||
fe650407 TM |
3836 | struct nfs4_delegreturndata { |
3837 | struct nfs4_delegreturnargs args; | |
fa178f29 | 3838 | struct nfs4_delegreturnres res; |
fe650407 TM |
3839 | struct nfs_fh fh; |
3840 | nfs4_stateid stateid; | |
26e976a8 | 3841 | unsigned long timestamp; |
fa178f29 | 3842 | struct nfs_fattr fattr; |
fe650407 TM |
3843 | int rpc_status; |
3844 | }; | |
3845 | ||
fe650407 TM |
3846 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
3847 | { | |
3848 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 3849 | |
14516c3a TM |
3850 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
3851 | return; | |
938e1010 | 3852 | |
79708861 RL |
3853 | switch (task->tk_status) { |
3854 | case -NFS4ERR_STALE_STATEID: | |
3855 | case -NFS4ERR_EXPIRED: | |
3856 | case 0: | |
fa178f29 | 3857 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
3858 | break; |
3859 | default: | |
3860 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
3861 | -EAGAIN) { | |
d00c5d43 | 3862 | rpc_restart_call_prepare(task); |
79708861 RL |
3863 | return; |
3864 | } | |
3865 | } | |
3866 | data->rpc_status = task->tk_status; | |
fe650407 TM |
3867 | } |
3868 | ||
3869 | static void nfs4_delegreturn_release(void *calldata) | |
3870 | { | |
fe650407 TM |
3871 | kfree(calldata); |
3872 | } | |
3873 | ||
938e1010 AA |
3874 | #if defined(CONFIG_NFS_V4_1) |
3875 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
3876 | { | |
3877 | struct nfs4_delegreturndata *d_data; | |
3878 | ||
3879 | d_data = (struct nfs4_delegreturndata *)data; | |
3880 | ||
035168ab | 3881 | if (nfs4_setup_sequence(d_data->res.server, |
938e1010 AA |
3882 | &d_data->args.seq_args, |
3883 | &d_data->res.seq_res, 1, task)) | |
3884 | return; | |
3885 | rpc_call_start(task); | |
3886 | } | |
3887 | #endif /* CONFIG_NFS_V4_1 */ | |
3888 | ||
c8d149f3 | 3889 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
3890 | #if defined(CONFIG_NFS_V4_1) |
3891 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
3892 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
3893 | .rpc_call_done = nfs4_delegreturn_done, |
3894 | .rpc_release = nfs4_delegreturn_release, | |
3895 | }; | |
3896 | ||
e6f81075 | 3897 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
3898 | { |
3899 | struct nfs4_delegreturndata *data; | |
fa178f29 | 3900 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 3901 | struct rpc_task *task; |
5138fde0 TM |
3902 | struct rpc_message msg = { |
3903 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
3904 | .rpc_cred = cred, | |
3905 | }; | |
c970aa85 TM |
3906 | struct rpc_task_setup task_setup_data = { |
3907 | .rpc_client = server->client, | |
5138fde0 | 3908 | .rpc_message = &msg, |
c970aa85 TM |
3909 | .callback_ops = &nfs4_delegreturn_ops, |
3910 | .flags = RPC_TASK_ASYNC, | |
3911 | }; | |
e6f81075 | 3912 | int status = 0; |
fe650407 | 3913 | |
8535b2be | 3914 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
3915 | if (data == NULL) |
3916 | return -ENOMEM; | |
3917 | data->args.fhandle = &data->fh; | |
3918 | data->args.stateid = &data->stateid; | |
fa178f29 | 3919 | data->args.bitmask = server->attr_bitmask; |
fe650407 TM |
3920 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
3921 | memcpy(&data->stateid, stateid, sizeof(data->stateid)); | |
fa178f29 TM |
3922 | data->res.fattr = &data->fattr; |
3923 | data->res.server = server; | |
5138fde0 | 3924 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 3925 | data->timestamp = jiffies; |
fe650407 TM |
3926 | data->rpc_status = 0; |
3927 | ||
c970aa85 | 3928 | task_setup_data.callback_data = data; |
1174dd1f TM |
3929 | msg.rpc_argp = &data->args; |
3930 | msg.rpc_resp = &data->res; | |
c970aa85 | 3931 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 3932 | if (IS_ERR(task)) |
fe650407 | 3933 | return PTR_ERR(task); |
e6f81075 TM |
3934 | if (!issync) |
3935 | goto out; | |
fe650407 | 3936 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
3937 | if (status != 0) |
3938 | goto out; | |
3939 | status = data->rpc_status; | |
3940 | if (status != 0) | |
3941 | goto out; | |
3942 | nfs_refresh_inode(inode, &data->fattr); | |
3943 | out: | |
e6b3c4db | 3944 | rpc_put_task(task); |
fe650407 | 3945 | return status; |
1da177e4 LT |
3946 | } |
3947 | ||
e6f81075 | 3948 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
3949 | { |
3950 | struct nfs_server *server = NFS_SERVER(inode); | |
3951 | struct nfs4_exception exception = { }; | |
3952 | int err; | |
3953 | do { | |
e6f81075 | 3954 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
3955 | switch (err) { |
3956 | case -NFS4ERR_STALE_STATEID: | |
3957 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
3958 | case 0: |
3959 | return 0; | |
3960 | } | |
3961 | err = nfs4_handle_exception(server, err, &exception); | |
3962 | } while (exception.retry); | |
3963 | return err; | |
3964 | } | |
3965 | ||
3966 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
3967 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
3968 | ||
3969 | /* | |
3970 | * sleep, with exponential backoff, and retry the LOCK operation. | |
3971 | */ | |
3972 | static unsigned long | |
3973 | nfs4_set_lock_task_retry(unsigned long timeout) | |
3974 | { | |
150030b7 | 3975 | schedule_timeout_killable(timeout); |
1da177e4 LT |
3976 | timeout <<= 1; |
3977 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
3978 | return NFS4_LOCK_MAXTIMEOUT; | |
3979 | return timeout; | |
3980 | } | |
3981 | ||
1da177e4 LT |
3982 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
3983 | { | |
3984 | struct inode *inode = state->inode; | |
3985 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 3986 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 3987 | struct nfs_lockt_args arg = { |
1da177e4 | 3988 | .fh = NFS_FH(inode), |
911d1aaf | 3989 | .fl = request, |
1da177e4 | 3990 | }; |
911d1aaf TM |
3991 | struct nfs_lockt_res res = { |
3992 | .denied = request, | |
1da177e4 LT |
3993 | }; |
3994 | struct rpc_message msg = { | |
3995 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
3996 | .rpc_argp = &arg, | |
3997 | .rpc_resp = &res, | |
3998 | .rpc_cred = state->owner->so_cred, | |
3999 | }; | |
1da177e4 LT |
4000 | struct nfs4_lock_state *lsp; |
4001 | int status; | |
4002 | ||
911d1aaf | 4003 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
4004 | status = nfs4_set_lock_state(state, request); |
4005 | if (status != 0) | |
4006 | goto out; | |
4007 | lsp = request->fl_u.nfs4_fl.owner; | |
9f958ab8 | 4008 | arg.lock_owner.id = lsp->ls_id.id; |
d035c36c | 4009 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 4010 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
4011 | switch (status) { |
4012 | case 0: | |
4013 | request->fl_type = F_UNLCK; | |
4014 | break; | |
4015 | case -NFS4ERR_DENIED: | |
4016 | status = 0; | |
1da177e4 | 4017 | } |
70cc6487 | 4018 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 4019 | out: |
1da177e4 LT |
4020 | return status; |
4021 | } | |
4022 | ||
4023 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4024 | { | |
4025 | struct nfs4_exception exception = { }; | |
4026 | int err; | |
4027 | ||
4028 | do { | |
4029 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
4030 | _nfs4_proc_getlk(state, cmd, request), | |
4031 | &exception); | |
4032 | } while (exception.retry); | |
4033 | return err; | |
4034 | } | |
4035 | ||
4036 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
4037 | { | |
4038 | int res = 0; | |
4039 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
4040 | case FL_POSIX: | |
4041 | res = posix_lock_file_wait(file, fl); | |
4042 | break; | |
4043 | case FL_FLOCK: | |
4044 | res = flock_lock_file_wait(file, fl); | |
4045 | break; | |
4046 | default: | |
4047 | BUG(); | |
4048 | } | |
1da177e4 LT |
4049 | return res; |
4050 | } | |
4051 | ||
faf5f49c | 4052 | struct nfs4_unlockdata { |
911d1aaf TM |
4053 | struct nfs_locku_args arg; |
4054 | struct nfs_locku_res res; | |
faf5f49c TM |
4055 | struct nfs4_lock_state *lsp; |
4056 | struct nfs_open_context *ctx; | |
911d1aaf TM |
4057 | struct file_lock fl; |
4058 | const struct nfs_server *server; | |
26e976a8 | 4059 | unsigned long timestamp; |
faf5f49c TM |
4060 | }; |
4061 | ||
911d1aaf TM |
4062 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
4063 | struct nfs_open_context *ctx, | |
4064 | struct nfs4_lock_state *lsp, | |
4065 | struct nfs_seqid *seqid) | |
4066 | { | |
4067 | struct nfs4_unlockdata *p; | |
4068 | struct inode *inode = lsp->ls_state->inode; | |
4069 | ||
8535b2be | 4070 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
4071 | if (p == NULL) |
4072 | return NULL; | |
4073 | p->arg.fh = NFS_FH(inode); | |
4074 | p->arg.fl = &p->fl; | |
4075 | p->arg.seqid = seqid; | |
c1d51931 | 4076 | p->res.seqid = seqid; |
911d1aaf TM |
4077 | p->arg.stateid = &lsp->ls_stateid; |
4078 | p->lsp = lsp; | |
4079 | atomic_inc(&lsp->ls_count); | |
4080 | /* Ensure we don't close file until we're done freeing locks! */ | |
4081 | p->ctx = get_nfs_open_context(ctx); | |
4082 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4083 | p->server = NFS_SERVER(inode); | |
4084 | return p; | |
4085 | } | |
4086 | ||
06f814a3 | 4087 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 4088 | { |
963d8fe5 | 4089 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 4090 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
4091 | nfs4_put_lock_state(calldata->lsp); |
4092 | put_nfs_open_context(calldata->ctx); | |
4093 | kfree(calldata); | |
faf5f49c TM |
4094 | } |
4095 | ||
963d8fe5 | 4096 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 4097 | { |
963d8fe5 | 4098 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4099 | |
14516c3a TM |
4100 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
4101 | return; | |
faf5f49c TM |
4102 | switch (task->tk_status) { |
4103 | case 0: | |
4104 | memcpy(calldata->lsp->ls_stateid.data, | |
911d1aaf | 4105 | calldata->res.stateid.data, |
faf5f49c | 4106 | sizeof(calldata->lsp->ls_stateid.data)); |
26e976a8 | 4107 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 4108 | break; |
9e33bed5 TM |
4109 | case -NFS4ERR_BAD_STATEID: |
4110 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
4111 | case -NFS4ERR_STALE_STATEID: |
4112 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
4113 | break; |
4114 | default: | |
9e33bed5 | 4115 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
d00c5d43 | 4116 | rpc_restart_call_prepare(task); |
faf5f49c | 4117 | } |
faf5f49c TM |
4118 | } |
4119 | ||
4ce70ada | 4120 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 4121 | { |
4ce70ada | 4122 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4123 | |
911d1aaf | 4124 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c TM |
4125 | return; |
4126 | if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) { | |
963d8fe5 TM |
4127 | /* Note: exit _without_ running nfs4_locku_done */ |
4128 | task->tk_action = NULL; | |
faf5f49c TM |
4129 | return; |
4130 | } | |
26e976a8 | 4131 | calldata->timestamp = jiffies; |
035168ab | 4132 | if (nfs4_setup_sequence(calldata->server, |
a893693c AA |
4133 | &calldata->arg.seq_args, |
4134 | &calldata->res.seq_res, 1, task)) | |
4135 | return; | |
5138fde0 | 4136 | rpc_call_start(task); |
faf5f49c TM |
4137 | } |
4138 | ||
963d8fe5 | 4139 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 4140 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 4141 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 4142 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
4143 | }; |
4144 | ||
a5d16a4d TM |
4145 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
4146 | struct nfs_open_context *ctx, | |
4147 | struct nfs4_lock_state *lsp, | |
4148 | struct nfs_seqid *seqid) | |
4149 | { | |
4150 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
4151 | struct rpc_message msg = { |
4152 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
4153 | .rpc_cred = ctx->cred, | |
4154 | }; | |
c970aa85 TM |
4155 | struct rpc_task_setup task_setup_data = { |
4156 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 4157 | .rpc_message = &msg, |
c970aa85 | 4158 | .callback_ops = &nfs4_locku_ops, |
101070ca | 4159 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4160 | .flags = RPC_TASK_ASYNC, |
4161 | }; | |
a5d16a4d | 4162 | |
137d6aca FF |
4163 | /* Ensure this is an unlock - when canceling a lock, the |
4164 | * canceled lock is passed in, and it won't be an unlock. | |
4165 | */ | |
4166 | fl->fl_type = F_UNLCK; | |
4167 | ||
a5d16a4d TM |
4168 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
4169 | if (data == NULL) { | |
4170 | nfs_free_seqid(seqid); | |
4171 | return ERR_PTR(-ENOMEM); | |
4172 | } | |
4173 | ||
1174dd1f TM |
4174 | msg.rpc_argp = &data->arg; |
4175 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4176 | task_setup_data.callback_data = data; |
4177 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
4178 | } |
4179 | ||
faf5f49c TM |
4180 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
4181 | { | |
19e03c57 | 4182 | struct nfs_inode *nfsi = NFS_I(state->inode); |
911d1aaf | 4183 | struct nfs_seqid *seqid; |
1da177e4 | 4184 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
4185 | struct rpc_task *task; |
4186 | int status = 0; | |
536ff0f8 | 4187 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 4188 | |
8d0a8a9d | 4189 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
4190 | /* Unlock _before_ we do the RPC call */ |
4191 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
4192 | down_read(&nfsi->rwsem); |
4193 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
4194 | up_read(&nfsi->rwsem); | |
9b073574 | 4195 | goto out; |
19e03c57 TM |
4196 | } |
4197 | up_read(&nfsi->rwsem); | |
8d0a8a9d | 4198 | if (status != 0) |
9b073574 TM |
4199 | goto out; |
4200 | /* Is this a delegated lock? */ | |
4201 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
4202 | goto out; | |
8d0a8a9d | 4203 | lsp = request->fl_u.nfs4_fl.owner; |
8535b2be | 4204 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 4205 | status = -ENOMEM; |
911d1aaf | 4206 | if (seqid == NULL) |
9b073574 | 4207 | goto out; |
cd3758e3 | 4208 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
4209 | status = PTR_ERR(task); |
4210 | if (IS_ERR(task)) | |
9b073574 | 4211 | goto out; |
a5d16a4d | 4212 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 4213 | rpc_put_task(task); |
9b073574 | 4214 | out: |
536ff0f8 | 4215 | request->fl_flags = fl_flags; |
1da177e4 LT |
4216 | return status; |
4217 | } | |
4218 | ||
a5d16a4d TM |
4219 | struct nfs4_lockdata { |
4220 | struct nfs_lock_args arg; | |
4221 | struct nfs_lock_res res; | |
4222 | struct nfs4_lock_state *lsp; | |
4223 | struct nfs_open_context *ctx; | |
4224 | struct file_lock fl; | |
26e976a8 | 4225 | unsigned long timestamp; |
a5d16a4d TM |
4226 | int rpc_status; |
4227 | int cancelled; | |
66179efe | 4228 | struct nfs_server *server; |
a5d16a4d TM |
4229 | }; |
4230 | ||
4231 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
4232 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
4233 | gfp_t gfp_mask) | |
1da177e4 | 4234 | { |
a5d16a4d TM |
4235 | struct nfs4_lockdata *p; |
4236 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 4237 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 4238 | |
8535b2be | 4239 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
4240 | if (p == NULL) |
4241 | return NULL; | |
4242 | ||
4243 | p->arg.fh = NFS_FH(inode); | |
4244 | p->arg.fl = &p->fl; | |
8535b2be | 4245 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4246 | if (p->arg.open_seqid == NULL) |
4247 | goto out_free; | |
8535b2be | 4248 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4249 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4250 | goto out_free_seqid; |
a5d16a4d | 4251 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4252 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 4253 | p->arg.lock_owner.id = lsp->ls_id.id; |
d035c36c | 4254 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 4255 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4256 | p->lsp = lsp; |
66179efe | 4257 | p->server = server; |
a5d16a4d TM |
4258 | atomic_inc(&lsp->ls_count); |
4259 | p->ctx = get_nfs_open_context(ctx); | |
4260 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4261 | return p; | |
2f74c0a0 TM |
4262 | out_free_seqid: |
4263 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4264 | out_free: |
4265 | kfree(p); | |
4266 | return NULL; | |
4267 | } | |
4268 | ||
4269 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4270 | { | |
4271 | struct nfs4_lockdata *data = calldata; | |
4272 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4273 | |
3110ff80 | 4274 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
4275 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
4276 | return; | |
a5d16a4d TM |
4277 | /* Do we need to do an open_to_lock_owner? */ |
4278 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 TM |
4279 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
4280 | return; | |
a5d16a4d TM |
4281 | data->arg.open_stateid = &state->stateid; |
4282 | data->arg.new_lock_owner = 1; | |
c1d51931 | 4283 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4284 | } else |
4285 | data->arg.new_lock_owner = 0; | |
26e976a8 | 4286 | data->timestamp = jiffies; |
035168ab TM |
4287 | if (nfs4_setup_sequence(data->server, |
4288 | &data->arg.seq_args, | |
66179efe AA |
4289 | &data->res.seq_res, 1, task)) |
4290 | return; | |
5138fde0 | 4291 | rpc_call_start(task); |
3110ff80 | 4292 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
a5d16a4d TM |
4293 | } |
4294 | ||
b257957e AB |
4295 | static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata) |
4296 | { | |
4297 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
4298 | nfs4_lock_prepare(task, calldata); | |
4299 | } | |
4300 | ||
a5d16a4d TM |
4301 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4302 | { | |
4303 | struct nfs4_lockdata *data = calldata; | |
4304 | ||
3110ff80 | 4305 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4306 | |
14516c3a TM |
4307 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4308 | return; | |
66179efe | 4309 | |
a5d16a4d | 4310 | data->rpc_status = task->tk_status; |
a5d16a4d | 4311 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4312 | if (data->rpc_status == 0) |
4313 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4314 | else | |
4315 | goto out; | |
4316 | } | |
4317 | if (data->rpc_status == 0) { | |
4318 | memcpy(data->lsp->ls_stateid.data, data->res.stateid.data, | |
4319 | sizeof(data->lsp->ls_stateid.data)); | |
4320 | data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; | |
3d4ff43d | 4321 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 4322 | } |
a5d16a4d | 4323 | out: |
3110ff80 | 4324 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4325 | } |
4326 | ||
4327 | static void nfs4_lock_release(void *calldata) | |
4328 | { | |
4329 | struct nfs4_lockdata *data = calldata; | |
4330 | ||
3110ff80 | 4331 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4332 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4333 | if (data->cancelled != 0) { |
4334 | struct rpc_task *task; | |
4335 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4336 | data->arg.lock_seqid); | |
4337 | if (!IS_ERR(task)) | |
bf294b41 | 4338 | rpc_put_task_async(task); |
3110ff80 | 4339 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4340 | } else |
4341 | nfs_free_seqid(data->arg.lock_seqid); | |
4342 | nfs4_put_lock_state(data->lsp); | |
4343 | put_nfs_open_context(data->ctx); | |
4344 | kfree(data); | |
3110ff80 | 4345 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4346 | } |
4347 | ||
4348 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4349 | .rpc_call_prepare = nfs4_lock_prepare, | |
4350 | .rpc_call_done = nfs4_lock_done, | |
4351 | .rpc_release = nfs4_lock_release, | |
4352 | }; | |
4353 | ||
b257957e AB |
4354 | static const struct rpc_call_ops nfs4_recover_lock_ops = { |
4355 | .rpc_call_prepare = nfs4_recover_lock_prepare, | |
4356 | .rpc_call_done = nfs4_lock_done, | |
4357 | .rpc_release = nfs4_lock_release, | |
4358 | }; | |
4359 | ||
2bee72a6 TM |
4360 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4361 | { | |
2bee72a6 TM |
4362 | switch (error) { |
4363 | case -NFS4ERR_ADMIN_REVOKED: | |
4364 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 4365 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 TM |
4366 | if (new_lock_owner != 0 || |
4367 | (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0) | |
ecac799a | 4368 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
4369 | break; |
4370 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 4371 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
4372 | case -NFS4ERR_EXPIRED: |
4373 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
4374 | }; |
4375 | } | |
4376 | ||
afe6c27c | 4377 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4378 | { |
4379 | struct nfs4_lockdata *data; | |
4380 | struct rpc_task *task; | |
5138fde0 TM |
4381 | struct rpc_message msg = { |
4382 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4383 | .rpc_cred = state->owner->so_cred, | |
4384 | }; | |
c970aa85 TM |
4385 | struct rpc_task_setup task_setup_data = { |
4386 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4387 | .rpc_message = &msg, |
c970aa85 | 4388 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4389 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4390 | .flags = RPC_TASK_ASYNC, |
4391 | }; | |
a5d16a4d TM |
4392 | int ret; |
4393 | ||
3110ff80 | 4394 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4395 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4396 | fl->fl_u.nfs4_fl.owner, |
4397 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4398 | if (data == NULL) |
4399 | return -ENOMEM; | |
4400 | if (IS_SETLKW(cmd)) | |
4401 | data->arg.block = 1; | |
b257957e AB |
4402 | if (recovery_type > NFS_LOCK_NEW) { |
4403 | if (recovery_type == NFS_LOCK_RECLAIM) | |
afe6c27c | 4404 | data->arg.reclaim = NFS_LOCK_RECLAIM; |
b257957e AB |
4405 | task_setup_data.callback_ops = &nfs4_recover_lock_ops; |
4406 | } | |
1174dd1f TM |
4407 | msg.rpc_argp = &data->arg; |
4408 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4409 | task_setup_data.callback_data = data; |
4410 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 4411 | if (IS_ERR(task)) |
a5d16a4d | 4412 | return PTR_ERR(task); |
a5d16a4d TM |
4413 | ret = nfs4_wait_for_completion_rpc_task(task); |
4414 | if (ret == 0) { | |
4415 | ret = data->rpc_status; | |
2bee72a6 TM |
4416 | if (ret) |
4417 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4418 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4419 | } else |
4420 | data->cancelled = 1; | |
e6b3c4db | 4421 | rpc_put_task(task); |
3110ff80 | 4422 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4423 | return ret; |
1da177e4 LT |
4424 | } |
4425 | ||
4426 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4427 | { | |
202b50dc TM |
4428 | struct nfs_server *server = NFS_SERVER(state->inode); |
4429 | struct nfs4_exception exception = { }; | |
4430 | int err; | |
4431 | ||
4432 | do { | |
42a2d13e TM |
4433 | /* Cache the lock if possible... */ |
4434 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4435 | return 0; | |
afe6c27c | 4436 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 4437 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
4438 | break; |
4439 | nfs4_handle_exception(server, err, &exception); | |
4440 | } while (exception.retry); | |
4441 | return err; | |
1da177e4 LT |
4442 | } |
4443 | ||
4444 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4445 | { | |
202b50dc TM |
4446 | struct nfs_server *server = NFS_SERVER(state->inode); |
4447 | struct nfs4_exception exception = { }; | |
4448 | int err; | |
4449 | ||
6bfc93ef TM |
4450 | err = nfs4_set_lock_state(state, request); |
4451 | if (err != 0) | |
4452 | return err; | |
202b50dc | 4453 | do { |
42a2d13e TM |
4454 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4455 | return 0; | |
afe6c27c | 4456 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
4457 | switch (err) { |
4458 | default: | |
4459 | goto out; | |
4460 | case -NFS4ERR_GRACE: | |
4461 | case -NFS4ERR_DELAY: | |
4462 | nfs4_handle_exception(server, err, &exception); | |
4463 | err = 0; | |
4464 | } | |
202b50dc | 4465 | } while (exception.retry); |
a9ed2e25 | 4466 | out: |
202b50dc | 4467 | return err; |
1da177e4 LT |
4468 | } |
4469 | ||
f062eb6c BS |
4470 | #if defined(CONFIG_NFS_V4_1) |
4471 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4472 | { | |
4473 | int status; | |
4474 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4475 | ||
4476 | status = nfs41_test_stateid(server, state); | |
4477 | if (status == NFS_OK) | |
4478 | return 0; | |
4479 | nfs41_free_stateid(server, state); | |
4480 | return nfs4_lock_expired(state, request); | |
4481 | } | |
4482 | #endif | |
4483 | ||
1da177e4 LT |
4484 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4485 | { | |
19e03c57 | 4486 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 4487 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 4488 | int status = -ENOLCK; |
1da177e4 | 4489 | |
8e469ebd TM |
4490 | if ((fl_flags & FL_POSIX) && |
4491 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
4492 | goto out; | |
6bfc93ef | 4493 | /* Is this a delegated open? */ |
6bfc93ef TM |
4494 | status = nfs4_set_lock_state(state, request); |
4495 | if (status != 0) | |
4496 | goto out; | |
01c3b861 TM |
4497 | request->fl_flags |= FL_ACCESS; |
4498 | status = do_vfs_lock(request->fl_file, request); | |
4499 | if (status < 0) | |
4500 | goto out; | |
19e03c57 | 4501 | down_read(&nfsi->rwsem); |
01c3b861 | 4502 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 4503 | /* Yes: cache locks! */ |
01c3b861 | 4504 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
4505 | request->fl_flags = fl_flags & ~FL_SLEEP; |
4506 | status = do_vfs_lock(request->fl_file, request); | |
4507 | goto out_unlock; | |
01c3b861 | 4508 | } |
afe6c27c | 4509 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 4510 | if (status != 0) |
01c3b861 | 4511 | goto out_unlock; |
6bfc93ef | 4512 | /* Note: we always want to sleep here! */ |
01c3b861 | 4513 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 4514 | if (do_vfs_lock(request->fl_file, request) < 0) |
3110ff80 | 4515 | printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __func__); |
01c3b861 | 4516 | out_unlock: |
19e03c57 | 4517 | up_read(&nfsi->rwsem); |
01c3b861 TM |
4518 | out: |
4519 | request->fl_flags = fl_flags; | |
1da177e4 LT |
4520 | return status; |
4521 | } | |
4522 | ||
4523 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4524 | { | |
4525 | struct nfs4_exception exception = { }; | |
4526 | int err; | |
4527 | ||
4528 | do { | |
965b5d67 TM |
4529 | err = _nfs4_proc_setlk(state, cmd, request); |
4530 | if (err == -NFS4ERR_DENIED) | |
4531 | err = -EAGAIN; | |
1da177e4 | 4532 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 4533 | err, &exception); |
1da177e4 LT |
4534 | } while (exception.retry); |
4535 | return err; | |
4536 | } | |
4537 | ||
4538 | static int | |
4539 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
4540 | { | |
4541 | struct nfs_open_context *ctx; | |
4542 | struct nfs4_state *state; | |
4543 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
4544 | int status; | |
4545 | ||
4546 | /* verify open state */ | |
cd3758e3 | 4547 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
4548 | state = ctx->state; |
4549 | ||
4550 | if (request->fl_start < 0 || request->fl_end < 0) | |
4551 | return -EINVAL; | |
4552 | ||
d953126a TM |
4553 | if (IS_GETLK(cmd)) { |
4554 | if (state != NULL) | |
4555 | return nfs4_proc_getlk(state, F_GETLK, request); | |
4556 | return 0; | |
4557 | } | |
1da177e4 LT |
4558 | |
4559 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
4560 | return -EINVAL; | |
4561 | ||
d953126a TM |
4562 | if (request->fl_type == F_UNLCK) { |
4563 | if (state != NULL) | |
4564 | return nfs4_proc_unlck(state, cmd, request); | |
4565 | return 0; | |
4566 | } | |
1da177e4 | 4567 | |
d953126a TM |
4568 | if (state == NULL) |
4569 | return -ENOLCK; | |
1da177e4 LT |
4570 | do { |
4571 | status = nfs4_proc_setlk(state, cmd, request); | |
4572 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
4573 | break; | |
4574 | timeout = nfs4_set_lock_task_retry(timeout); | |
4575 | status = -ERESTARTSYS; | |
4576 | if (signalled()) | |
4577 | break; | |
4578 | } while(status < 0); | |
1da177e4 LT |
4579 | return status; |
4580 | } | |
4581 | ||
888e694c TM |
4582 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
4583 | { | |
4584 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4585 | struct nfs4_exception exception = { }; | |
4586 | int err; | |
4587 | ||
4588 | err = nfs4_set_lock_state(state, fl); | |
4589 | if (err != 0) | |
4590 | goto out; | |
4591 | do { | |
afe6c27c | 4592 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
d5122201 TM |
4593 | switch (err) { |
4594 | default: | |
4595 | printk(KERN_ERR "%s: unhandled error %d.\n", | |
4596 | __func__, err); | |
4597 | case 0: | |
965b5d67 | 4598 | case -ESTALE: |
d5122201 TM |
4599 | goto out; |
4600 | case -NFS4ERR_EXPIRED: | |
0ced63d1 | 4601 | nfs4_schedule_stateid_recovery(server, state); |
d5122201 | 4602 | case -NFS4ERR_STALE_CLIENTID: |
965b5d67 | 4603 | case -NFS4ERR_STALE_STATEID: |
0400a6b0 TM |
4604 | nfs4_schedule_lease_recovery(server->nfs_client); |
4605 | goto out; | |
74e7bb73 RL |
4606 | case -NFS4ERR_BADSESSION: |
4607 | case -NFS4ERR_BADSLOT: | |
4608 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4609 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4610 | case -NFS4ERR_DEADSESSION: | |
0400a6b0 | 4611 | nfs4_schedule_session_recovery(server->nfs_client->cl_session); |
d5122201 | 4612 | goto out; |
965b5d67 TM |
4613 | case -ERESTARTSYS: |
4614 | /* | |
4615 | * The show must go on: exit, but mark the | |
4616 | * stateid as needing recovery. | |
4617 | */ | |
4618 | case -NFS4ERR_ADMIN_REVOKED: | |
4619 | case -NFS4ERR_BAD_STATEID: | |
4620 | case -NFS4ERR_OPENMODE: | |
0400a6b0 | 4621 | nfs4_schedule_stateid_recovery(server, state); |
965b5d67 TM |
4622 | err = 0; |
4623 | goto out; | |
168667c4 TM |
4624 | case -EKEYEXPIRED: |
4625 | /* | |
4626 | * User RPCSEC_GSS context has expired. | |
4627 | * We cannot recover this stateid now, so | |
4628 | * skip it and allow recovery thread to | |
4629 | * proceed. | |
4630 | */ | |
4631 | err = 0; | |
4632 | goto out; | |
965b5d67 TM |
4633 | case -ENOMEM: |
4634 | case -NFS4ERR_DENIED: | |
4635 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
4636 | err = 0; | |
4637 | goto out; | |
d5122201 TM |
4638 | case -NFS4ERR_DELAY: |
4639 | break; | |
4640 | } | |
888e694c TM |
4641 | err = nfs4_handle_exception(server, err, &exception); |
4642 | } while (exception.retry); | |
4643 | out: | |
4644 | return err; | |
4645 | } | |
6b3b5496 | 4646 | |
d3c7b7cc TM |
4647 | static void nfs4_release_lockowner_release(void *calldata) |
4648 | { | |
4649 | kfree(calldata); | |
4650 | } | |
4651 | ||
4652 | const struct rpc_call_ops nfs4_release_lockowner_ops = { | |
4653 | .rpc_release = nfs4_release_lockowner_release, | |
4654 | }; | |
4655 | ||
4656 | void nfs4_release_lockowner(const struct nfs4_lock_state *lsp) | |
4657 | { | |
4658 | struct nfs_server *server = lsp->ls_state->owner->so_server; | |
4659 | struct nfs_release_lockowner_args *args; | |
4660 | struct rpc_message msg = { | |
4661 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
4662 | }; | |
4663 | ||
4664 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
4665 | return; | |
4666 | args = kmalloc(sizeof(*args), GFP_NOFS); | |
4667 | if (!args) | |
4668 | return; | |
4669 | args->lock_owner.clientid = server->nfs_client->cl_clientid; | |
4670 | args->lock_owner.id = lsp->ls_id.id; | |
d035c36c | 4671 | args->lock_owner.s_dev = server->s_dev; |
d3c7b7cc TM |
4672 | msg.rpc_argp = args; |
4673 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, args); | |
4674 | } | |
4675 | ||
aa1870af BF |
4676 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
4677 | ||
64c2ce8b AK |
4678 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
4679 | const void *buf, size_t buflen, | |
4680 | int flags, int type) | |
6b3b5496 | 4681 | { |
64c2ce8b AK |
4682 | if (strcmp(key, "") != 0) |
4683 | return -EINVAL; | |
4b580ee3 | 4684 | |
64c2ce8b | 4685 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4686 | } |
4687 | ||
64c2ce8b AK |
4688 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
4689 | void *buf, size_t buflen, int type) | |
6b3b5496 | 4690 | { |
64c2ce8b AK |
4691 | if (strcmp(key, "") != 0) |
4692 | return -EINVAL; | |
aa1870af | 4693 | |
64c2ce8b | 4694 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4695 | } |
4696 | ||
64c2ce8b AK |
4697 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
4698 | size_t list_len, const char *name, | |
4699 | size_t name_len, int type) | |
6b3b5496 | 4700 | { |
64c2ce8b | 4701 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 4702 | |
096455a2 BF |
4703 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
4704 | return 0; | |
64c2ce8b AK |
4705 | |
4706 | if (list && len <= list_len) | |
4707 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 4708 | return len; |
6b3b5496 BF |
4709 | } |
4710 | ||
533eb461 AA |
4711 | /* |
4712 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
4713 | */ | |
69aaaae1 TM |
4714 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
4715 | { | |
533eb461 AA |
4716 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
4717 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
4718 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
4719 | (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL))) | |
69aaaae1 TM |
4720 | return; |
4721 | ||
4722 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
4723 | NFS_ATTR_FATTR_NLINK; | |
4724 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; | |
4725 | fattr->nlink = 2; | |
4726 | } | |
4727 | ||
56659e99 | 4728 | int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, |
7aaa0b3b | 4729 | struct nfs4_fs_locations *fs_locations, struct page *page) |
683b57b4 TM |
4730 | { |
4731 | struct nfs_server *server = NFS_SERVER(dir); | |
4732 | u32 bitmask[2] = { | |
361e624f | 4733 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
4734 | }; |
4735 | struct nfs4_fs_locations_arg args = { | |
4736 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 4737 | .name = name, |
683b57b4 TM |
4738 | .page = page, |
4739 | .bitmask = bitmask, | |
4740 | }; | |
22958463 BH |
4741 | struct nfs4_fs_locations_res res = { |
4742 | .fs_locations = fs_locations, | |
4743 | }; | |
683b57b4 TM |
4744 | struct rpc_message msg = { |
4745 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
4746 | .rpc_argp = &args, | |
22958463 | 4747 | .rpc_resp = &res, |
683b57b4 TM |
4748 | }; |
4749 | int status; | |
4750 | ||
3110ff80 | 4751 | dprintk("%s: start\n", __func__); |
533eb461 AA |
4752 | |
4753 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
4754 | * is not supported */ | |
4755 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
4756 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
4757 | else | |
4758 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
4759 | ||
c228fd3a | 4760 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 4761 | fs_locations->server = server; |
830b8e33 | 4762 | fs_locations->nlocations = 0; |
7c513058 | 4763 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 4764 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
4765 | return status; |
4766 | } | |
4767 | ||
5a5ea0d4 BS |
4768 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) |
4769 | { | |
4770 | int status; | |
4771 | struct nfs4_secinfo_arg args = { | |
4772 | .dir_fh = NFS_FH(dir), | |
4773 | .name = name, | |
4774 | }; | |
4775 | struct nfs4_secinfo_res res = { | |
4776 | .flavors = flavors, | |
4777 | }; | |
4778 | struct rpc_message msg = { | |
4779 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
4780 | .rpc_argp = &args, | |
4781 | .rpc_resp = &res, | |
4782 | }; | |
4783 | ||
4784 | dprintk("NFS call secinfo %s\n", name->name); | |
4785 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); | |
4786 | dprintk("NFS reply secinfo: %d\n", status); | |
4787 | return status; | |
4788 | } | |
4789 | ||
4790 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) | |
4791 | { | |
4792 | struct nfs4_exception exception = { }; | |
4793 | int err; | |
4794 | do { | |
4795 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
4796 | _nfs4_proc_secinfo(dir, name, flavors), | |
4797 | &exception); | |
4798 | } while (exception.retry); | |
4799 | return err; | |
4800 | } | |
4801 | ||
557134a3 | 4802 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
4803 | /* |
4804 | * Check the exchange flags returned by the server for invalid flags, having | |
4805 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
4806 | * DS flags set. | |
4807 | */ | |
4808 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
4809 | { | |
4810 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
4811 | goto out_inval; | |
4812 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
4813 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
4814 | goto out_inval; | |
4815 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
4816 | goto out_inval; | |
4817 | return NFS_OK; | |
4818 | out_inval: | |
4819 | return -NFS4ERR_INVAL; | |
4820 | } | |
4821 | ||
78fe0f41 WAA |
4822 | static bool |
4823 | nfs41_same_server_scope(struct server_scope *a, struct server_scope *b) | |
4824 | { | |
4825 | if (a->server_scope_sz == b->server_scope_sz && | |
4826 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
4827 | return true; | |
4828 | ||
4829 | return false; | |
4830 | } | |
4831 | ||
99fe60d0 BH |
4832 | /* |
4833 | * nfs4_proc_exchange_id() | |
4834 | * | |
4835 | * Since the clientid has expired, all compounds using sessions | |
4836 | * associated with the stale clientid will be returning | |
4837 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
4838 | * be in some phase of session reset. | |
4839 | */ | |
4d643d1d | 4840 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
4841 | { |
4842 | nfs4_verifier verifier; | |
4843 | struct nfs41_exchange_id_args args = { | |
4844 | .client = clp, | |
357f54d6 | 4845 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, |
99fe60d0 BH |
4846 | }; |
4847 | struct nfs41_exchange_id_res res = { | |
4848 | .client = clp, | |
4849 | }; | |
4850 | int status; | |
4851 | struct rpc_message msg = { | |
4852 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
4853 | .rpc_argp = &args, | |
4854 | .rpc_resp = &res, | |
4855 | .rpc_cred = cred, | |
4856 | }; | |
4857 | __be32 *p; | |
4858 | ||
4859 | dprintk("--> %s\n", __func__); | |
4860 | BUG_ON(clp == NULL); | |
a7b72103 | 4861 | |
99fe60d0 BH |
4862 | p = (u32 *)verifier.data; |
4863 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); | |
4864 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
4865 | args.verifier = &verifier; | |
4866 | ||
c7a360b0 AA |
4867 | args.id_len = scnprintf(args.id, sizeof(args.id), |
4868 | "%s/%s.%s/%u", | |
4869 | clp->cl_ipaddr, | |
4870 | init_utsname()->nodename, | |
4871 | init_utsname()->domainname, | |
4872 | clp->cl_rpcclient->cl_auth->au_flavor); | |
99fe60d0 | 4873 | |
78fe0f41 WAA |
4874 | res.server_scope = kzalloc(sizeof(struct server_scope), GFP_KERNEL); |
4875 | if (unlikely(!res.server_scope)) | |
4876 | return -ENOMEM; | |
4877 | ||
1bd714f2 | 4878 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c7a360b0 AA |
4879 | if (!status) |
4880 | status = nfs4_check_cl_exchange_flags(clp->cl_exchange_flags); | |
78fe0f41 WAA |
4881 | |
4882 | if (!status) { | |
4883 | if (clp->server_scope && | |
4884 | !nfs41_same_server_scope(clp->server_scope, | |
4885 | res.server_scope)) { | |
4886 | dprintk("%s: server_scope mismatch detected\n", | |
4887 | __func__); | |
4888 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
4889 | kfree(clp->server_scope); | |
4890 | clp->server_scope = NULL; | |
4891 | } | |
4892 | ||
4893 | if (!clp->server_scope) | |
4894 | clp->server_scope = res.server_scope; | |
4895 | else | |
4896 | kfree(res.server_scope); | |
4897 | } | |
4898 | ||
99fe60d0 BH |
4899 | dprintk("<-- %s status= %d\n", __func__, status); |
4900 | return status; | |
4901 | } | |
4902 | ||
2050f0cc AA |
4903 | struct nfs4_get_lease_time_data { |
4904 | struct nfs4_get_lease_time_args *args; | |
4905 | struct nfs4_get_lease_time_res *res; | |
4906 | struct nfs_client *clp; | |
4907 | }; | |
4908 | ||
4909 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
4910 | void *calldata) | |
4911 | { | |
4912 | int ret; | |
4913 | struct nfs4_get_lease_time_data *data = | |
4914 | (struct nfs4_get_lease_time_data *)calldata; | |
4915 | ||
4916 | dprintk("--> %s\n", __func__); | |
689cf5c1 | 4917 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
2050f0cc AA |
4918 | /* just setup sequence, do not trigger session recovery |
4919 | since we're invoked within one */ | |
4920 | ret = nfs41_setup_sequence(data->clp->cl_session, | |
689cf5c1 AB |
4921 | &data->args->la_seq_args, |
4922 | &data->res->lr_seq_res, 0, task); | |
2050f0cc AA |
4923 | |
4924 | BUG_ON(ret == -EAGAIN); | |
4925 | rpc_call_start(task); | |
4926 | dprintk("<-- %s\n", __func__); | |
4927 | } | |
4928 | ||
4929 | /* | |
4930 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
4931 | * from sequence operation or clientid errors. | |
4932 | */ | |
4933 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
4934 | { | |
4935 | struct nfs4_get_lease_time_data *data = | |
4936 | (struct nfs4_get_lease_time_data *)calldata; | |
4937 | ||
4938 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
4939 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
4940 | return; | |
2050f0cc AA |
4941 | switch (task->tk_status) { |
4942 | case -NFS4ERR_DELAY: | |
4943 | case -NFS4ERR_GRACE: | |
4944 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
4945 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
4946 | task->tk_status = 0; | |
a8a4ae3a AA |
4947 | /* fall through */ |
4948 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 4949 | rpc_restart_call_prepare(task); |
2050f0cc AA |
4950 | return; |
4951 | } | |
2050f0cc AA |
4952 | dprintk("<-- %s\n", __func__); |
4953 | } | |
4954 | ||
4955 | struct rpc_call_ops nfs4_get_lease_time_ops = { | |
4956 | .rpc_call_prepare = nfs4_get_lease_time_prepare, | |
4957 | .rpc_call_done = nfs4_get_lease_time_done, | |
4958 | }; | |
4959 | ||
4960 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
4961 | { | |
4962 | struct rpc_task *task; | |
4963 | struct nfs4_get_lease_time_args args; | |
4964 | struct nfs4_get_lease_time_res res = { | |
4965 | .lr_fsinfo = fsinfo, | |
4966 | }; | |
4967 | struct nfs4_get_lease_time_data data = { | |
4968 | .args = &args, | |
4969 | .res = &res, | |
4970 | .clp = clp, | |
4971 | }; | |
4972 | struct rpc_message msg = { | |
4973 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
4974 | .rpc_argp = &args, | |
4975 | .rpc_resp = &res, | |
4976 | }; | |
4977 | struct rpc_task_setup task_setup = { | |
4978 | .rpc_client = clp->cl_rpcclient, | |
4979 | .rpc_message = &msg, | |
4980 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
4981 | .callback_data = &data, |
4982 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
4983 | }; |
4984 | int status; | |
4985 | ||
2050f0cc AA |
4986 | dprintk("--> %s\n", __func__); |
4987 | task = rpc_run_task(&task_setup); | |
4988 | ||
4989 | if (IS_ERR(task)) | |
4990 | status = PTR_ERR(task); | |
4991 | else { | |
4992 | status = task->tk_status; | |
4993 | rpc_put_task(task); | |
4994 | } | |
4995 | dprintk("<-- %s return %d\n", __func__, status); | |
4996 | ||
4997 | return status; | |
4998 | } | |
4999 | ||
b73dafa7 RL |
5000 | /* |
5001 | * Reset a slot table | |
5002 | */ | |
104aeba4 AA |
5003 | static int nfs4_reset_slot_table(struct nfs4_slot_table *tbl, u32 max_reqs, |
5004 | int ivalue) | |
ac72b7b3 | 5005 | { |
104aeba4 | 5006 | struct nfs4_slot *new = NULL; |
b73dafa7 | 5007 | int i; |
ac72b7b3 AA |
5008 | int ret = 0; |
5009 | ||
104aeba4 AA |
5010 | dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__, |
5011 | max_reqs, tbl->max_slots); | |
ac72b7b3 | 5012 | |
104aeba4 AA |
5013 | /* Does the newly negotiated max_reqs match the existing slot table? */ |
5014 | if (max_reqs != tbl->max_slots) { | |
5015 | ret = -ENOMEM; | |
5016 | new = kmalloc(max_reqs * sizeof(struct nfs4_slot), | |
8535b2be | 5017 | GFP_NOFS); |
104aeba4 AA |
5018 | if (!new) |
5019 | goto out; | |
5020 | ret = 0; | |
5021 | kfree(tbl->slots); | |
ac72b7b3 AA |
5022 | } |
5023 | spin_lock(&tbl->slot_tbl_lock); | |
104aeba4 AA |
5024 | if (new) { |
5025 | tbl->slots = new; | |
5026 | tbl->max_slots = max_reqs; | |
5027 | } | |
5028 | for (i = 0; i < tbl->max_slots; ++i) | |
b73dafa7 | 5029 | tbl->slots[i].seq_nr = ivalue; |
ac72b7b3 AA |
5030 | spin_unlock(&tbl->slot_tbl_lock); |
5031 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, | |
5032 | tbl, tbl->slots, tbl->max_slots); | |
5033 | out: | |
5034 | dprintk("<-- %s: return %d\n", __func__, ret); | |
5035 | return ret; | |
5036 | } | |
5037 | ||
f8625a6a RL |
5038 | /* Destroy the slot table */ |
5039 | static void nfs4_destroy_slot_tables(struct nfs4_session *session) | |
5040 | { | |
5041 | if (session->fc_slot_table.slots != NULL) { | |
5042 | kfree(session->fc_slot_table.slots); | |
5043 | session->fc_slot_table.slots = NULL; | |
5044 | } | |
5045 | if (session->bc_slot_table.slots != NULL) { | |
5046 | kfree(session->bc_slot_table.slots); | |
5047 | session->bc_slot_table.slots = NULL; | |
5048 | } | |
5049 | return; | |
5050 | } | |
5051 | ||
fc931582 AA |
5052 | /* |
5053 | * Initialize slot table | |
5054 | */ | |
050047ce RL |
5055 | static int nfs4_init_slot_table(struct nfs4_slot_table *tbl, |
5056 | int max_slots, int ivalue) | |
fc931582 | 5057 | { |
fc931582 AA |
5058 | struct nfs4_slot *slot; |
5059 | int ret = -ENOMEM; | |
5060 | ||
5061 | BUG_ON(max_slots > NFS4_MAX_SLOT_TABLE); | |
5062 | ||
050047ce | 5063 | dprintk("--> %s: max_reqs=%u\n", __func__, max_slots); |
fc931582 | 5064 | |
8535b2be | 5065 | slot = kcalloc(max_slots, sizeof(struct nfs4_slot), GFP_NOFS); |
fc931582 AA |
5066 | if (!slot) |
5067 | goto out; | |
fc931582 AA |
5068 | ret = 0; |
5069 | ||
5070 | spin_lock(&tbl->slot_tbl_lock); | |
fc931582 AA |
5071 | tbl->max_slots = max_slots; |
5072 | tbl->slots = slot; | |
5073 | tbl->highest_used_slotid = -1; /* no slot is currently used */ | |
5074 | spin_unlock(&tbl->slot_tbl_lock); | |
5075 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, | |
5076 | tbl, tbl->slots, tbl->max_slots); | |
5077 | out: | |
5078 | dprintk("<-- %s: return %d\n", __func__, ret); | |
5079 | return ret; | |
fc931582 AA |
5080 | } |
5081 | ||
050047ce | 5082 | /* |
aacd5537 | 5083 | * Initialize or reset the forechannel and backchannel tables |
050047ce | 5084 | */ |
aacd5537 | 5085 | static int nfs4_setup_session_slot_tables(struct nfs4_session *ses) |
050047ce | 5086 | { |
f26468fb | 5087 | struct nfs4_slot_table *tbl; |
aacd5537 | 5088 | int status; |
050047ce | 5089 | |
aacd5537 AA |
5090 | dprintk("--> %s\n", __func__); |
5091 | /* Fore channel */ | |
5092 | tbl = &ses->fc_slot_table; | |
f26468fb | 5093 | if (tbl->slots == NULL) { |
aacd5537 AA |
5094 | status = nfs4_init_slot_table(tbl, ses->fc_attrs.max_reqs, 1); |
5095 | if (status) /* -ENOMEM */ | |
5096 | return status; | |
5097 | } else { | |
5098 | status = nfs4_reset_slot_table(tbl, ses->fc_attrs.max_reqs, 1); | |
f26468fb TM |
5099 | if (status) |
5100 | return status; | |
5101 | } | |
aacd5537 AA |
5102 | /* Back channel */ |
5103 | tbl = &ses->bc_slot_table; | |
f26468fb | 5104 | if (tbl->slots == NULL) { |
aacd5537 | 5105 | status = nfs4_init_slot_table(tbl, ses->bc_attrs.max_reqs, 0); |
f26468fb | 5106 | if (status) |
aacd5537 AA |
5107 | /* Fore and back channel share a connection so get |
5108 | * both slot tables or neither */ | |
5109 | nfs4_destroy_slot_tables(ses); | |
5110 | } else | |
5111 | status = nfs4_reset_slot_table(tbl, ses->bc_attrs.max_reqs, 0); | |
f8625a6a | 5112 | return status; |
557134a3 AA |
5113 | } |
5114 | ||
5115 | struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) | |
5116 | { | |
5117 | struct nfs4_session *session; | |
5118 | struct nfs4_slot_table *tbl; | |
5119 | ||
8535b2be | 5120 | session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); |
557134a3 AA |
5121 | if (!session) |
5122 | return NULL; | |
76db6d95 | 5123 | |
557134a3 | 5124 | tbl = &session->fc_slot_table; |
9dfdf404 | 5125 | tbl->highest_used_slotid = -1; |
557134a3 | 5126 | spin_lock_init(&tbl->slot_tbl_lock); |
689cf5c1 | 5127 | rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table"); |
42acd021 | 5128 | init_completion(&tbl->complete); |
f8625a6a RL |
5129 | |
5130 | tbl = &session->bc_slot_table; | |
9dfdf404 | 5131 | tbl->highest_used_slotid = -1; |
f8625a6a RL |
5132 | spin_lock_init(&tbl->slot_tbl_lock); |
5133 | rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table"); | |
42acd021 | 5134 | init_completion(&tbl->complete); |
f8625a6a | 5135 | |
1055d76d TM |
5136 | session->session_state = 1<<NFS4_SESSION_INITING; |
5137 | ||
557134a3 AA |
5138 | session->clp = clp; |
5139 | return session; | |
5140 | } | |
5141 | ||
5142 | void nfs4_destroy_session(struct nfs4_session *session) | |
5143 | { | |
5a0ffe54 AA |
5144 | nfs4_proc_destroy_session(session); |
5145 | dprintk("%s Destroy backchannel for xprt %p\n", | |
5146 | __func__, session->clp->cl_rpcclient->cl_xprt); | |
5147 | xprt_destroy_backchannel(session->clp->cl_rpcclient->cl_xprt, | |
5148 | NFS41_BC_MIN_CALLBACKS); | |
f8625a6a | 5149 | nfs4_destroy_slot_tables(session); |
557134a3 AA |
5150 | kfree(session); |
5151 | } | |
5152 | ||
fc931582 AA |
5153 | /* |
5154 | * Initialize the values to be used by the client in CREATE_SESSION | |
5155 | * If nfs4_init_session set the fore channel request and response sizes, | |
5156 | * use them. | |
5157 | * | |
5158 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
5159 | * always set csa_cachethis to FALSE because the current implementation | |
5160 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
5161 | */ | |
5162 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
5163 | { | |
5164 | struct nfs4_session *session = args->client->cl_session; | |
5165 | unsigned int mxrqst_sz = session->fc_attrs.max_rqst_sz, | |
5166 | mxresp_sz = session->fc_attrs.max_resp_sz; | |
5167 | ||
5168 | if (mxrqst_sz == 0) | |
5169 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
5170 | if (mxresp_sz == 0) | |
5171 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
5172 | /* Fore channel attributes */ | |
fc931582 AA |
5173 | args->fc_attrs.max_rqst_sz = mxrqst_sz; |
5174 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 AA |
5175 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
5176 | args->fc_attrs.max_reqs = session->clp->cl_rpcclient->cl_xprt->max_reqs; | |
5177 | ||
5178 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 5179 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
5180 | __func__, |
5181 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 5182 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
5183 | |
5184 | /* Back channel attributes */ | |
fc931582 AA |
5185 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
5186 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
5187 | args->bc_attrs.max_resp_sz_cached = 0; | |
5188 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
5189 | args->bc_attrs.max_reqs = 1; | |
5190 | ||
5191 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
5192 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
5193 | __func__, | |
5194 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
5195 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
5196 | args->bc_attrs.max_reqs); | |
5197 | } | |
5198 | ||
43c2e885 | 5199 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 5200 | { |
43c2e885 BF |
5201 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
5202 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
5203 | ||
43c2e885 BF |
5204 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
5205 | return -EINVAL; | |
5206 | /* | |
5207 | * Our requested max_ops is the minimum we need; we're not | |
5208 | * prepared to break up compounds into smaller pieces than that. | |
5209 | * So, no point even trying to continue if the server won't | |
5210 | * cooperate: | |
5211 | */ | |
5212 | if (rcvd->max_ops < sent->max_ops) | |
5213 | return -EINVAL; | |
5214 | if (rcvd->max_reqs == 0) | |
5215 | return -EINVAL; | |
5216 | return 0; | |
8d35301d AA |
5217 | } |
5218 | ||
43c2e885 BF |
5219 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
5220 | { | |
5221 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
5222 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 5223 | |
43c2e885 BF |
5224 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
5225 | return -EINVAL; | |
5226 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
5227 | return -EINVAL; | |
5228 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
5229 | return -EINVAL; | |
5230 | /* These would render the backchannel useless: */ | |
5231 | if (rcvd->max_ops == 0) | |
5232 | return -EINVAL; | |
5233 | if (rcvd->max_reqs == 0) | |
5234 | return -EINVAL; | |
5235 | return 0; | |
5236 | } | |
8d35301d | 5237 | |
8d35301d AA |
5238 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
5239 | struct nfs4_session *session) | |
5240 | { | |
43c2e885 | 5241 | int ret; |
8d35301d | 5242 | |
43c2e885 BF |
5243 | ret = nfs4_verify_fore_channel_attrs(args, session); |
5244 | if (ret) | |
5245 | return ret; | |
5246 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
5247 | } |
5248 | ||
fc931582 AA |
5249 | static int _nfs4_proc_create_session(struct nfs_client *clp) |
5250 | { | |
5251 | struct nfs4_session *session = clp->cl_session; | |
5252 | struct nfs41_create_session_args args = { | |
5253 | .client = clp, | |
5254 | .cb_program = NFS4_CALLBACK, | |
5255 | }; | |
5256 | struct nfs41_create_session_res res = { | |
5257 | .client = clp, | |
5258 | }; | |
5259 | struct rpc_message msg = { | |
5260 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
5261 | .rpc_argp = &args, | |
5262 | .rpc_resp = &res, | |
5263 | }; | |
5264 | int status; | |
5265 | ||
5266 | nfs4_init_channel_attrs(&args); | |
0f91421e | 5267 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 5268 | |
1bd714f2 | 5269 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
fc931582 | 5270 | |
8d35301d AA |
5271 | if (!status) |
5272 | /* Verify the session's negotiated channel_attrs values */ | |
5273 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
5274 | if (!status) { |
5275 | /* Increment the clientid slot sequence id */ | |
5276 | clp->cl_seqid++; | |
5277 | } | |
5278 | ||
5279 | return status; | |
5280 | } | |
5281 | ||
5282 | /* | |
5283 | * Issues a CREATE_SESSION operation to the server. | |
5284 | * It is the responsibility of the caller to verify the session is | |
5285 | * expired before calling this routine. | |
5286 | */ | |
f26468fb | 5287 | int nfs4_proc_create_session(struct nfs_client *clp) |
fc931582 AA |
5288 | { |
5289 | int status; | |
5290 | unsigned *ptr; | |
fc931582 AA |
5291 | struct nfs4_session *session = clp->cl_session; |
5292 | ||
5293 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
5294 | ||
fd954ae1 | 5295 | status = _nfs4_proc_create_session(clp); |
fc931582 AA |
5296 | if (status) |
5297 | goto out; | |
5298 | ||
aacd5537 AA |
5299 | /* Init or reset the session slot tables */ |
5300 | status = nfs4_setup_session_slot_tables(session); | |
5301 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
5302 | if (status) |
5303 | goto out; | |
5304 | ||
5305 | ptr = (unsigned *)&session->sess_id.data[0]; | |
5306 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
5307 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
5308 | out: |
5309 | dprintk("<-- %s\n", __func__); | |
5310 | return status; | |
5311 | } | |
5312 | ||
0f3e66c6 AA |
5313 | /* |
5314 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
5315 | * The caller must serialize access to this routine. | |
5316 | */ | |
5317 | int nfs4_proc_destroy_session(struct nfs4_session *session) | |
5318 | { | |
5319 | int status = 0; | |
5320 | struct rpc_message msg; | |
5321 | ||
5322 | dprintk("--> nfs4_proc_destroy_session\n"); | |
5323 | ||
5324 | /* session is still being setup */ | |
5325 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
5326 | return status; | |
5327 | ||
5328 | msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION]; | |
5329 | msg.rpc_argp = session; | |
5330 | msg.rpc_resp = NULL; | |
5331 | msg.rpc_cred = NULL; | |
1bd714f2 | 5332 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
0f3e66c6 AA |
5333 | |
5334 | if (status) | |
5335 | printk(KERN_WARNING | |
5336 | "Got error %d from the server on DESTROY_SESSION. " | |
5337 | "Session has been destroyed regardless...\n", status); | |
5338 | ||
5339 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
5340 | return status; | |
5341 | } | |
5342 | ||
fccba804 TM |
5343 | int nfs4_init_session(struct nfs_server *server) |
5344 | { | |
5345 | struct nfs_client *clp = server->nfs_client; | |
2449ea2e | 5346 | struct nfs4_session *session; |
68bf05ef | 5347 | unsigned int rsize, wsize; |
fccba804 TM |
5348 | int ret; |
5349 | ||
5350 | if (!nfs4_has_session(clp)) | |
5351 | return 0; | |
5352 | ||
1055d76d TM |
5353 | session = clp->cl_session; |
5354 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5355 | return 0; | |
5356 | ||
68bf05ef AA |
5357 | rsize = server->rsize; |
5358 | if (rsize == 0) | |
5359 | rsize = NFS_MAX_FILE_IO_SIZE; | |
5360 | wsize = server->wsize; | |
5361 | if (wsize == 0) | |
5362 | wsize = NFS_MAX_FILE_IO_SIZE; | |
5363 | ||
68bf05ef AA |
5364 | session->fc_attrs.max_rqst_sz = wsize + nfs41_maxwrite_overhead; |
5365 | session->fc_attrs.max_resp_sz = rsize + nfs41_maxread_overhead; | |
2449ea2e | 5366 | |
fccba804 TM |
5367 | ret = nfs4_recover_expired_lease(server); |
5368 | if (!ret) | |
5369 | ret = nfs4_check_client_ready(clp); | |
5370 | return ret; | |
5371 | } | |
5372 | ||
d83217c1 AA |
5373 | int nfs4_init_ds_session(struct nfs_client *clp) |
5374 | { | |
5375 | struct nfs4_session *session = clp->cl_session; | |
5376 | int ret; | |
5377 | ||
5378 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5379 | return 0; | |
5380 | ||
5381 | ret = nfs4_client_recover_expired_lease(clp); | |
5382 | if (!ret) | |
5383 | /* Test for the DS role */ | |
5384 | if (!is_ds_client(clp)) | |
5385 | ret = -ENODEV; | |
5386 | if (!ret) | |
5387 | ret = nfs4_check_client_ready(clp); | |
5388 | return ret; | |
5389 | ||
5390 | } | |
5391 | EXPORT_SYMBOL_GPL(nfs4_init_ds_session); | |
5392 | ||
5393 | ||
fc01cea9 AA |
5394 | /* |
5395 | * Renew the cl_session lease. | |
5396 | */ | |
d5f8d3fe TM |
5397 | struct nfs4_sequence_data { |
5398 | struct nfs_client *clp; | |
5399 | struct nfs4_sequence_args args; | |
5400 | struct nfs4_sequence_res res; | |
5401 | }; | |
5402 | ||
dc96aef9 AB |
5403 | static void nfs41_sequence_release(void *data) |
5404 | { | |
d5f8d3fe TM |
5405 | struct nfs4_sequence_data *calldata = data; |
5406 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 5407 | |
7135840f AB |
5408 | if (atomic_read(&clp->cl_count) > 1) |
5409 | nfs4_schedule_state_renewal(clp); | |
5410 | nfs_put_client(clp); | |
d5f8d3fe | 5411 | kfree(calldata); |
dc96aef9 AB |
5412 | } |
5413 | ||
aa5190d0 TM |
5414 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5415 | { | |
5416 | switch(task->tk_status) { | |
5417 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5418 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5419 | return -EAGAIN; | |
5420 | default: | |
0400a6b0 | 5421 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5422 | } |
5423 | return 0; | |
5424 | } | |
5425 | ||
dc96aef9 | 5426 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 5427 | { |
d5f8d3fe TM |
5428 | struct nfs4_sequence_data *calldata = data; |
5429 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 5430 | |
14516c3a TM |
5431 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
5432 | return; | |
fc01cea9 AA |
5433 | |
5434 | if (task->tk_status < 0) { | |
5435 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
5436 | if (atomic_read(&clp->cl_count) == 1) |
5437 | goto out; | |
fc01cea9 | 5438 | |
aa5190d0 TM |
5439 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
5440 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
5441 | return; |
5442 | } | |
5443 | } | |
fc01cea9 | 5444 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 5445 | out: |
fc01cea9 AA |
5446 | dprintk("<-- %s\n", __func__); |
5447 | } | |
5448 | ||
5449 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
5450 | { | |
d5f8d3fe TM |
5451 | struct nfs4_sequence_data *calldata = data; |
5452 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
5453 | struct nfs4_sequence_args *args; |
5454 | struct nfs4_sequence_res *res; | |
5455 | ||
fc01cea9 AA |
5456 | args = task->tk_msg.rpc_argp; |
5457 | res = task->tk_msg.rpc_resp; | |
5458 | ||
035168ab | 5459 | if (nfs41_setup_sequence(clp->cl_session, args, res, 0, task)) |
fc01cea9 AA |
5460 | return; |
5461 | rpc_call_start(task); | |
5462 | } | |
5463 | ||
5464 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
5465 | .rpc_call_done = nfs41_sequence_call_done, | |
5466 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 5467 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
5468 | }; |
5469 | ||
71ac6da9 | 5470 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) |
fc01cea9 | 5471 | { |
d5f8d3fe | 5472 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
5473 | struct rpc_message msg = { |
5474 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
5475 | .rpc_cred = cred, | |
5476 | }; | |
71ac6da9 TM |
5477 | struct rpc_task_setup task_setup_data = { |
5478 | .rpc_client = clp->cl_rpcclient, | |
5479 | .rpc_message = &msg, | |
5480 | .callback_ops = &nfs41_sequence_ops, | |
5481 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT, | |
5482 | }; | |
fc01cea9 | 5483 | |
7135840f | 5484 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 5485 | return ERR_PTR(-EIO); |
dfb4f309 | 5486 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 5487 | if (calldata == NULL) { |
7135840f | 5488 | nfs_put_client(clp); |
71ac6da9 | 5489 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 5490 | } |
d5f8d3fe TM |
5491 | msg.rpc_argp = &calldata->args; |
5492 | msg.rpc_resp = &calldata->res; | |
5493 | calldata->clp = clp; | |
71ac6da9 | 5494 | task_setup_data.callback_data = calldata; |
fc01cea9 | 5495 | |
71ac6da9 TM |
5496 | return rpc_run_task(&task_setup_data); |
5497 | } | |
5498 | ||
2f60ea6b | 5499 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
5500 | { |
5501 | struct rpc_task *task; | |
5502 | int ret = 0; | |
5503 | ||
2f60ea6b TM |
5504 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
5505 | return 0; | |
71ac6da9 TM |
5506 | task = _nfs41_proc_sequence(clp, cred); |
5507 | if (IS_ERR(task)) | |
5508 | ret = PTR_ERR(task); | |
5509 | else | |
bf294b41 | 5510 | rpc_put_task_async(task); |
71ac6da9 TM |
5511 | dprintk("<-- %s status=%d\n", __func__, ret); |
5512 | return ret; | |
5513 | } | |
5514 | ||
5515 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5516 | { | |
5517 | struct rpc_task *task; | |
5518 | int ret; | |
5519 | ||
5520 | task = _nfs41_proc_sequence(clp, cred); | |
5521 | if (IS_ERR(task)) { | |
5522 | ret = PTR_ERR(task); | |
5523 | goto out; | |
5524 | } | |
5525 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
5526 | if (!ret) { |
5527 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
5528 | ||
5529 | if (task->tk_status == 0) | |
5530 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 5531 | ret = task->tk_status; |
b4410c2f | 5532 | } |
71ac6da9 TM |
5533 | rpc_put_task(task); |
5534 | out: | |
5535 | dprintk("<-- %s status=%d\n", __func__, ret); | |
5536 | return ret; | |
fc01cea9 AA |
5537 | } |
5538 | ||
fce5c838 RL |
5539 | struct nfs4_reclaim_complete_data { |
5540 | struct nfs_client *clp; | |
5541 | struct nfs41_reclaim_complete_args arg; | |
5542 | struct nfs41_reclaim_complete_res res; | |
5543 | }; | |
5544 | ||
5545 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
5546 | { | |
5547 | struct nfs4_reclaim_complete_data *calldata = data; | |
5548 | ||
b257957e | 5549 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
035168ab TM |
5550 | if (nfs41_setup_sequence(calldata->clp->cl_session, |
5551 | &calldata->arg.seq_args, | |
fce5c838 RL |
5552 | &calldata->res.seq_res, 0, task)) |
5553 | return; | |
5554 | ||
5555 | rpc_call_start(task); | |
5556 | } | |
5557 | ||
aa5190d0 TM |
5558 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5559 | { | |
5560 | switch(task->tk_status) { | |
5561 | case 0: | |
5562 | case -NFS4ERR_COMPLETE_ALREADY: | |
5563 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
5564 | break; | |
5565 | case -NFS4ERR_DELAY: | |
aa5190d0 | 5566 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
5567 | /* fall through */ |
5568 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
5569 | return -EAGAIN; |
5570 | default: | |
0400a6b0 | 5571 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5572 | } |
5573 | return 0; | |
5574 | } | |
5575 | ||
fce5c838 RL |
5576 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
5577 | { | |
5578 | struct nfs4_reclaim_complete_data *calldata = data; | |
5579 | struct nfs_client *clp = calldata->clp; | |
5580 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
5581 | ||
5582 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5583 | if (!nfs41_sequence_done(task, res)) |
5584 | return; | |
fce5c838 | 5585 | |
aa5190d0 TM |
5586 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
5587 | rpc_restart_call_prepare(task); | |
5588 | return; | |
5589 | } | |
fce5c838 RL |
5590 | dprintk("<-- %s\n", __func__); |
5591 | } | |
5592 | ||
5593 | static void nfs4_free_reclaim_complete_data(void *data) | |
5594 | { | |
5595 | struct nfs4_reclaim_complete_data *calldata = data; | |
5596 | ||
5597 | kfree(calldata); | |
5598 | } | |
5599 | ||
5600 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
5601 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
5602 | .rpc_call_done = nfs4_reclaim_complete_done, | |
5603 | .rpc_release = nfs4_free_reclaim_complete_data, | |
5604 | }; | |
5605 | ||
5606 | /* | |
5607 | * Issue a global reclaim complete. | |
5608 | */ | |
5609 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
5610 | { | |
5611 | struct nfs4_reclaim_complete_data *calldata; | |
5612 | struct rpc_task *task; | |
5613 | struct rpc_message msg = { | |
5614 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
5615 | }; | |
5616 | struct rpc_task_setup task_setup_data = { | |
5617 | .rpc_client = clp->cl_rpcclient, | |
5618 | .rpc_message = &msg, | |
5619 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
5620 | .flags = RPC_TASK_ASYNC, | |
5621 | }; | |
5622 | int status = -ENOMEM; | |
5623 | ||
5624 | dprintk("--> %s\n", __func__); | |
8535b2be | 5625 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
5626 | if (calldata == NULL) |
5627 | goto out; | |
5628 | calldata->clp = clp; | |
5629 | calldata->arg.one_fs = 0; | |
fce5c838 RL |
5630 | |
5631 | msg.rpc_argp = &calldata->arg; | |
5632 | msg.rpc_resp = &calldata->res; | |
5633 | task_setup_data.callback_data = calldata; | |
5634 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 5635 | if (IS_ERR(task)) { |
fce5c838 | 5636 | status = PTR_ERR(task); |
acf82b85 DC |
5637 | goto out; |
5638 | } | |
c34c32ea AA |
5639 | status = nfs4_wait_for_completion_rpc_task(task); |
5640 | if (status == 0) | |
5641 | status = task->tk_status; | |
fce5c838 | 5642 | rpc_put_task(task); |
acf82b85 | 5643 | return 0; |
fce5c838 RL |
5644 | out: |
5645 | dprintk("<-- %s status=%d\n", __func__, status); | |
5646 | return status; | |
5647 | } | |
b1f69b75 AA |
5648 | |
5649 | static void | |
5650 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
5651 | { | |
5652 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 5653 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
b1f69b75 AA |
5654 | |
5655 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
5656 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
5657 | * right now covering the LAYOUTGET we are about to send. | |
5658 | * However, that is not so catastrophic, and there seems | |
5659 | * to be no way to prevent it completely. | |
5660 | */ | |
b1f69b75 AA |
5661 | if (nfs4_setup_sequence(server, &lgp->args.seq_args, |
5662 | &lgp->res.seq_res, 0, task)) | |
5663 | return; | |
cf7d63f1 FI |
5664 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
5665 | NFS_I(lgp->args.inode)->layout, | |
5666 | lgp->args.ctx->state)) { | |
5667 | rpc_exit(task, NFS4_OK); | |
5668 | return; | |
5669 | } | |
b1f69b75 AA |
5670 | rpc_call_start(task); |
5671 | } | |
5672 | ||
5673 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
5674 | { | |
5675 | struct nfs4_layoutget *lgp = calldata; | |
5676 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5677 | ||
5678 | dprintk("--> %s\n", __func__); | |
5679 | ||
5680 | if (!nfs4_sequence_done(task, &lgp->res.seq_res)) | |
5681 | return; | |
5682 | ||
5683 | switch (task->tk_status) { | |
5684 | case 0: | |
5685 | break; | |
5686 | case -NFS4ERR_LAYOUTTRYLATER: | |
5687 | case -NFS4ERR_RECALLCONFLICT: | |
5688 | task->tk_status = -NFS4ERR_DELAY; | |
5689 | /* Fall through */ | |
5690 | default: | |
5691 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
5692 | rpc_restart_call_prepare(task); | |
5693 | return; | |
5694 | } | |
5695 | } | |
b1f69b75 AA |
5696 | dprintk("<-- %s\n", __func__); |
5697 | } | |
5698 | ||
5699 | static void nfs4_layoutget_release(void *calldata) | |
5700 | { | |
5701 | struct nfs4_layoutget *lgp = calldata; | |
5702 | ||
5703 | dprintk("--> %s\n", __func__); | |
b1f69b75 AA |
5704 | put_nfs_open_context(lgp->args.ctx); |
5705 | kfree(calldata); | |
5706 | dprintk("<-- %s\n", __func__); | |
5707 | } | |
5708 | ||
5709 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
5710 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
5711 | .rpc_call_done = nfs4_layoutget_done, | |
5712 | .rpc_release = nfs4_layoutget_release, | |
5713 | }; | |
5714 | ||
5715 | int nfs4_proc_layoutget(struct nfs4_layoutget *lgp) | |
5716 | { | |
5717 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5718 | struct rpc_task *task; | |
5719 | struct rpc_message msg = { | |
5720 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
5721 | .rpc_argp = &lgp->args, | |
5722 | .rpc_resp = &lgp->res, | |
5723 | }; | |
5724 | struct rpc_task_setup task_setup_data = { | |
5725 | .rpc_client = server->client, | |
5726 | .rpc_message = &msg, | |
5727 | .callback_ops = &nfs4_layoutget_call_ops, | |
5728 | .callback_data = lgp, | |
5729 | .flags = RPC_TASK_ASYNC, | |
5730 | }; | |
5731 | int status = 0; | |
5732 | ||
5733 | dprintk("--> %s\n", __func__); | |
5734 | ||
35124a09 | 5735 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 AA |
5736 | lgp->res.seq_res.sr_slot = NULL; |
5737 | task = rpc_run_task(&task_setup_data); | |
5738 | if (IS_ERR(task)) | |
5739 | return PTR_ERR(task); | |
5740 | status = nfs4_wait_for_completion_rpc_task(task); | |
c31663d4 FI |
5741 | if (status == 0) |
5742 | status = task->tk_status; | |
5743 | if (status == 0) | |
5744 | status = pnfs_layout_process(lgp); | |
b1f69b75 AA |
5745 | rpc_put_task(task); |
5746 | dprintk("<-- %s status=%d\n", __func__, status); | |
5747 | return status; | |
5748 | } | |
5749 | ||
cbe82603 BH |
5750 | static void |
5751 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
5752 | { | |
5753 | struct nfs4_layoutreturn *lrp = calldata; | |
5754 | ||
5755 | dprintk("--> %s\n", __func__); | |
5756 | if (nfs41_setup_sequence(lrp->clp->cl_session, &lrp->args.seq_args, | |
5757 | &lrp->res.seq_res, 0, task)) | |
5758 | return; | |
5759 | rpc_call_start(task); | |
5760 | } | |
5761 | ||
5762 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
5763 | { | |
5764 | struct nfs4_layoutreturn *lrp = calldata; | |
5765 | struct nfs_server *server; | |
a56aaa02 | 5766 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
5767 | |
5768 | dprintk("--> %s\n", __func__); | |
5769 | ||
5770 | if (!nfs4_sequence_done(task, &lrp->res.seq_res)) | |
5771 | return; | |
5772 | ||
5773 | server = NFS_SERVER(lrp->args.inode); | |
5774 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 5775 | rpc_restart_call_prepare(task); |
cbe82603 BH |
5776 | return; |
5777 | } | |
a2e1d4f2 | 5778 | spin_lock(&lo->plh_inode->i_lock); |
cbe82603 | 5779 | if (task->tk_status == 0) { |
cbe82603 | 5780 | if (lrp->res.lrs_present) { |
cbe82603 | 5781 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); |
cbe82603 BH |
5782 | } else |
5783 | BUG_ON(!list_empty(&lo->plh_segs)); | |
5784 | } | |
a2e1d4f2 FI |
5785 | lo->plh_block_lgets--; |
5786 | spin_unlock(&lo->plh_inode->i_lock); | |
cbe82603 BH |
5787 | dprintk("<-- %s\n", __func__); |
5788 | } | |
5789 | ||
5790 | static void nfs4_layoutreturn_release(void *calldata) | |
5791 | { | |
5792 | struct nfs4_layoutreturn *lrp = calldata; | |
5793 | ||
5794 | dprintk("--> %s\n", __func__); | |
a56aaa02 | 5795 | put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
5796 | kfree(calldata); |
5797 | dprintk("<-- %s\n", __func__); | |
5798 | } | |
5799 | ||
5800 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
5801 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
5802 | .rpc_call_done = nfs4_layoutreturn_done, | |
5803 | .rpc_release = nfs4_layoutreturn_release, | |
5804 | }; | |
5805 | ||
5806 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
5807 | { | |
5808 | struct rpc_task *task; | |
5809 | struct rpc_message msg = { | |
5810 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
5811 | .rpc_argp = &lrp->args, | |
5812 | .rpc_resp = &lrp->res, | |
5813 | }; | |
5814 | struct rpc_task_setup task_setup_data = { | |
5815 | .rpc_client = lrp->clp->cl_rpcclient, | |
5816 | .rpc_message = &msg, | |
5817 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
5818 | .callback_data = lrp, | |
5819 | }; | |
5820 | int status; | |
5821 | ||
5822 | dprintk("--> %s\n", __func__); | |
5823 | task = rpc_run_task(&task_setup_data); | |
5824 | if (IS_ERR(task)) | |
5825 | return PTR_ERR(task); | |
5826 | status = task->tk_status; | |
5827 | dprintk("<-- %s status=%d\n", __func__, status); | |
5828 | rpc_put_task(task); | |
5829 | return status; | |
5830 | } | |
5831 | ||
7f11d8d3 AA |
5832 | /* |
5833 | * Retrieve the list of Data Server devices from the MDS. | |
5834 | */ | |
5835 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
5836 | const struct nfs_fh *fh, | |
5837 | struct pnfs_devicelist *devlist) | |
5838 | { | |
5839 | struct nfs4_getdevicelist_args args = { | |
5840 | .fh = fh, | |
5841 | .layoutclass = server->pnfs_curr_ld->id, | |
5842 | }; | |
5843 | struct nfs4_getdevicelist_res res = { | |
5844 | .devlist = devlist, | |
5845 | }; | |
5846 | struct rpc_message msg = { | |
5847 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
5848 | .rpc_argp = &args, | |
5849 | .rpc_resp = &res, | |
5850 | }; | |
5851 | int status; | |
5852 | ||
5853 | dprintk("--> %s\n", __func__); | |
5854 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
5855 | &res.seq_res, 0); | |
5856 | dprintk("<-- %s status=%d\n", __func__, status); | |
5857 | return status; | |
5858 | } | |
5859 | ||
5860 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
5861 | const struct nfs_fh *fh, | |
5862 | struct pnfs_devicelist *devlist) | |
5863 | { | |
5864 | struct nfs4_exception exception = { }; | |
5865 | int err; | |
5866 | ||
5867 | do { | |
5868 | err = nfs4_handle_exception(server, | |
5869 | _nfs4_getdevicelist(server, fh, devlist), | |
5870 | &exception); | |
5871 | } while (exception.retry); | |
5872 | ||
5873 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
5874 | err, devlist->num_devs); | |
5875 | ||
5876 | return err; | |
5877 | } | |
5878 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
5879 | ||
b1f69b75 AA |
5880 | static int |
5881 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
5882 | { | |
5883 | struct nfs4_getdeviceinfo_args args = { | |
5884 | .pdev = pdev, | |
5885 | }; | |
5886 | struct nfs4_getdeviceinfo_res res = { | |
5887 | .pdev = pdev, | |
5888 | }; | |
5889 | struct rpc_message msg = { | |
5890 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
5891 | .rpc_argp = &args, | |
5892 | .rpc_resp = &res, | |
5893 | }; | |
5894 | int status; | |
5895 | ||
5896 | dprintk("--> %s\n", __func__); | |
7c513058 | 5897 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
5898 | dprintk("<-- %s status=%d\n", __func__, status); |
5899 | ||
5900 | return status; | |
5901 | } | |
5902 | ||
5903 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
5904 | { | |
5905 | struct nfs4_exception exception = { }; | |
5906 | int err; | |
5907 | ||
5908 | do { | |
5909 | err = nfs4_handle_exception(server, | |
5910 | _nfs4_proc_getdeviceinfo(server, pdev), | |
5911 | &exception); | |
5912 | } while (exception.retry); | |
5913 | return err; | |
5914 | } | |
5915 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
5916 | ||
863a3c6c AA |
5917 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
5918 | { | |
5919 | struct nfs4_layoutcommit_data *data = calldata; | |
5920 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
5921 | ||
5922 | if (nfs4_setup_sequence(server, &data->args.seq_args, | |
5923 | &data->res.seq_res, 1, task)) | |
5924 | return; | |
5925 | rpc_call_start(task); | |
5926 | } | |
5927 | ||
5928 | static void | |
5929 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
5930 | { | |
5931 | struct nfs4_layoutcommit_data *data = calldata; | |
5932 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
5933 | ||
5934 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
5935 | return; | |
5936 | ||
5937 | switch (task->tk_status) { /* Just ignore these failures */ | |
5938 | case NFS4ERR_DELEG_REVOKED: /* layout was recalled */ | |
5939 | case NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
5940 | case NFS4ERR_BADLAYOUT: /* no layout */ | |
5941 | case NFS4ERR_GRACE: /* loca_recalim always false */ | |
5942 | task->tk_status = 0; | |
5943 | } | |
5944 | ||
5945 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 5946 | rpc_restart_call_prepare(task); |
863a3c6c AA |
5947 | return; |
5948 | } | |
5949 | ||
5950 | if (task->tk_status == 0) | |
5951 | nfs_post_op_update_inode_force_wcc(data->args.inode, | |
5952 | data->res.fattr); | |
5953 | } | |
5954 | ||
5955 | static void nfs4_layoutcommit_release(void *calldata) | |
5956 | { | |
5957 | struct nfs4_layoutcommit_data *data = calldata; | |
a9bae566 | 5958 | struct pnfs_layout_segment *lseg, *tmp; |
92407e75 | 5959 | unsigned long *bitlock = &NFS_I(data->args.inode)->flags; |
863a3c6c | 5960 | |
db29c089 | 5961 | pnfs_cleanup_layoutcommit(data); |
863a3c6c | 5962 | /* Matched by references in pnfs_set_layoutcommit */ |
a9bae566 PT |
5963 | list_for_each_entry_safe(lseg, tmp, &data->lseg_list, pls_lc_list) { |
5964 | list_del_init(&lseg->pls_lc_list); | |
5965 | if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT, | |
5966 | &lseg->pls_flags)) | |
5967 | put_lseg(lseg); | |
5968 | } | |
92407e75 PT |
5969 | |
5970 | clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING, bitlock); | |
5971 | smp_mb__after_clear_bit(); | |
5972 | wake_up_bit(bitlock, NFS_INO_LAYOUTCOMMITTING); | |
5973 | ||
863a3c6c AA |
5974 | put_rpccred(data->cred); |
5975 | kfree(data); | |
5976 | } | |
5977 | ||
5978 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
5979 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
5980 | .rpc_call_done = nfs4_layoutcommit_done, | |
5981 | .rpc_release = nfs4_layoutcommit_release, | |
5982 | }; | |
5983 | ||
5984 | int | |
ef311537 | 5985 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
5986 | { |
5987 | struct rpc_message msg = { | |
5988 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
5989 | .rpc_argp = &data->args, | |
5990 | .rpc_resp = &data->res, | |
5991 | .rpc_cred = data->cred, | |
5992 | }; | |
5993 | struct rpc_task_setup task_setup_data = { | |
5994 | .task = &data->task, | |
5995 | .rpc_client = NFS_CLIENT(data->args.inode), | |
5996 | .rpc_message = &msg, | |
5997 | .callback_ops = &nfs4_layoutcommit_ops, | |
5998 | .callback_data = data, | |
5999 | .flags = RPC_TASK_ASYNC, | |
6000 | }; | |
6001 | struct rpc_task *task; | |
6002 | int status = 0; | |
6003 | ||
6004 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
6005 | "lbw: %llu inode %lu\n", | |
6006 | data->task.tk_pid, sync, | |
6007 | data->args.lastbytewritten, | |
6008 | data->args.inode->i_ino); | |
6009 | ||
6010 | task = rpc_run_task(&task_setup_data); | |
6011 | if (IS_ERR(task)) | |
6012 | return PTR_ERR(task); | |
ef311537 | 6013 | if (sync == false) |
863a3c6c AA |
6014 | goto out; |
6015 | status = nfs4_wait_for_completion_rpc_task(task); | |
6016 | if (status != 0) | |
6017 | goto out; | |
6018 | status = task->tk_status; | |
6019 | out: | |
6020 | dprintk("%s: status %d\n", __func__, status); | |
6021 | rpc_put_task(task); | |
6022 | return status; | |
6023 | } | |
fca78d6d BS |
6024 | |
6025 | static int | |
6026 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6027 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6028 | { | |
6029 | struct nfs41_secinfo_no_name_args args = { | |
6030 | .style = SECINFO_STYLE_CURRENT_FH, | |
6031 | }; | |
6032 | struct nfs4_secinfo_res res = { | |
6033 | .flavors = flavors, | |
6034 | }; | |
6035 | struct rpc_message msg = { | |
6036 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
6037 | .rpc_argp = &args, | |
6038 | .rpc_resp = &res, | |
6039 | }; | |
6040 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); | |
6041 | } | |
6042 | ||
6043 | static int | |
6044 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6045 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6046 | { | |
6047 | struct nfs4_exception exception = { }; | |
6048 | int err; | |
6049 | do { | |
6050 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6051 | switch (err) { | |
6052 | case 0: | |
6053 | case -NFS4ERR_WRONGSEC: | |
6054 | case -NFS4ERR_NOTSUPP: | |
6055 | break; | |
6056 | default: | |
6057 | err = nfs4_handle_exception(server, err, &exception); | |
6058 | } | |
6059 | } while (exception.retry); | |
6060 | return err; | |
6061 | } | |
6062 | ||
6063 | static int | |
6064 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
6065 | struct nfs_fsinfo *info) | |
6066 | { | |
6067 | int err; | |
6068 | struct page *page; | |
6069 | rpc_authflavor_t flavor; | |
6070 | struct nfs4_secinfo_flavors *flavors; | |
6071 | ||
6072 | page = alloc_page(GFP_KERNEL); | |
6073 | if (!page) { | |
6074 | err = -ENOMEM; | |
6075 | goto out; | |
6076 | } | |
6077 | ||
6078 | flavors = page_address(page); | |
6079 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6080 | ||
6081 | /* | |
6082 | * Fall back on "guess and check" method if | |
6083 | * the server doesn't support SECINFO_NO_NAME | |
6084 | */ | |
6085 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
6086 | err = nfs4_find_root_sec(server, fhandle, info); | |
6087 | goto out_freepage; | |
6088 | } | |
6089 | if (err) | |
6090 | goto out_freepage; | |
6091 | ||
6092 | flavor = nfs_find_best_sec(flavors); | |
6093 | if (err == 0) | |
6094 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
6095 | ||
6096 | out_freepage: | |
6097 | put_page(page); | |
6098 | if (err == -EACCES) | |
6099 | return -EPERM; | |
6100 | out: | |
6101 | return err; | |
6102 | } | |
7d974794 BS |
6103 | static int _nfs41_test_stateid(struct nfs_server *server, struct nfs4_state *state) |
6104 | { | |
6105 | int status; | |
6106 | struct nfs41_test_stateid_args args = { | |
6107 | .stateid = &state->stateid, | |
6108 | }; | |
6109 | struct nfs41_test_stateid_res res; | |
6110 | struct rpc_message msg = { | |
6111 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
6112 | .rpc_argp = &args, | |
6113 | .rpc_resp = &res, | |
6114 | }; | |
6115 | args.seq_args.sa_session = res.seq_res.sr_session = NULL; | |
6116 | status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 0, 1); | |
6117 | return status; | |
6118 | } | |
6119 | ||
6120 | static int nfs41_test_stateid(struct nfs_server *server, struct nfs4_state *state) | |
6121 | { | |
6122 | struct nfs4_exception exception = { }; | |
6123 | int err; | |
6124 | do { | |
6125 | err = nfs4_handle_exception(server, | |
6126 | _nfs41_test_stateid(server, state), | |
6127 | &exception); | |
6128 | } while (exception.retry); | |
6129 | return err; | |
6130 | } | |
9aeda35f BS |
6131 | |
6132 | static int _nfs4_free_stateid(struct nfs_server *server, struct nfs4_state *state) | |
6133 | { | |
6134 | int status; | |
6135 | struct nfs41_free_stateid_args args = { | |
6136 | .stateid = &state->stateid, | |
6137 | }; | |
6138 | struct nfs41_free_stateid_res res; | |
6139 | struct rpc_message msg = { | |
6140 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
6141 | .rpc_argp = &args, | |
6142 | .rpc_resp = &res, | |
6143 | }; | |
6144 | ||
6145 | args.seq_args.sa_session = res.seq_res.sr_session = NULL; | |
6146 | status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 0, 1); | |
6147 | return status; | |
6148 | } | |
6149 | ||
6150 | static int nfs41_free_stateid(struct nfs_server *server, struct nfs4_state *state) | |
6151 | { | |
6152 | struct nfs4_exception exception = { }; | |
6153 | int err; | |
6154 | do { | |
6155 | err = nfs4_handle_exception(server, | |
6156 | _nfs4_free_stateid(server, state), | |
6157 | &exception); | |
6158 | } while (exception.retry); | |
6159 | return err; | |
6160 | } | |
557134a3 AA |
6161 | #endif /* CONFIG_NFS_V4_1 */ |
6162 | ||
591d71cb | 6163 | struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 6164 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 6165 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
6166 | .recover_open = nfs4_open_reclaim, |
6167 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 6168 | .establish_clid = nfs4_init_clientid, |
90a16617 | 6169 | .get_clid_cred = nfs4_get_setclientid_cred, |
1da177e4 LT |
6170 | }; |
6171 | ||
591d71cb AA |
6172 | #if defined(CONFIG_NFS_V4_1) |
6173 | struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { | |
6174 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, | |
6175 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
6176 | .recover_open = nfs4_open_reclaim, | |
6177 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 6178 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6179 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 6180 | .reclaim_complete = nfs41_proc_reclaim_complete, |
591d71cb AA |
6181 | }; |
6182 | #endif /* CONFIG_NFS_V4_1 */ | |
6183 | ||
6184 | struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { | |
6185 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, | |
6186 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
6187 | .recover_open = nfs4_open_expired, | |
6188 | .recover_lock = nfs4_lock_expired, | |
6189 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 6190 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
6191 | }; |
6192 | ||
6193 | #if defined(CONFIG_NFS_V4_1) | |
6194 | struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { | |
7eff03ae | 6195 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 6196 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
6197 | .recover_open = nfs41_open_expired, |
6198 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 6199 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6200 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 6201 | }; |
591d71cb | 6202 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 6203 | |
29fba38b BH |
6204 | struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
6205 | .sched_state_renewal = nfs4_proc_async_renew, | |
a7b72103 | 6206 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 6207 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
6208 | }; |
6209 | ||
6210 | #if defined(CONFIG_NFS_V4_1) | |
6211 | struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { | |
6212 | .sched_state_renewal = nfs41_proc_async_sequence, | |
a7b72103 | 6213 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 6214 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
6215 | }; |
6216 | #endif | |
6217 | ||
97dc1359 TM |
6218 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
6219 | .minor_version = 0, | |
6220 | .call_sync = _nfs4_call_sync, | |
e047a10c | 6221 | .validate_stateid = nfs4_validate_delegation_stateid, |
fca78d6d | 6222 | .find_root_sec = nfs4_find_root_sec, |
c48f4f35 TM |
6223 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
6224 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
6225 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
6226 | }; |
6227 | ||
6228 | #if defined(CONFIG_NFS_V4_1) | |
6229 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
6230 | .minor_version = 1, | |
6231 | .call_sync = _nfs4_call_sync_session, | |
e047a10c | 6232 | .validate_stateid = nfs41_validate_delegation_stateid, |
fca78d6d | 6233 | .find_root_sec = nfs41_find_root_sec, |
c48f4f35 TM |
6234 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
6235 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
6236 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
6237 | }; |
6238 | #endif | |
6239 | ||
97dc1359 TM |
6240 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
6241 | [0] = &nfs_v4_0_minor_ops, | |
6242 | #if defined(CONFIG_NFS_V4_1) | |
6243 | [1] = &nfs_v4_1_minor_ops, | |
6244 | #endif | |
6245 | }; | |
6246 | ||
92e1d5be | 6247 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
6248 | .permission = nfs_permission, |
6249 | .getattr = nfs_getattr, | |
6250 | .setattr = nfs_setattr, | |
64c2ce8b AK |
6251 | .getxattr = generic_getxattr, |
6252 | .setxattr = generic_setxattr, | |
6253 | .listxattr = generic_listxattr, | |
6254 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
6255 | }; |
6256 | ||
509de811 | 6257 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
6258 | .version = 4, /* protocol version */ |
6259 | .dentry_ops = &nfs4_dentry_operations, | |
6260 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 6261 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 6262 | .file_ops = &nfs4_file_operations, |
1da177e4 LT |
6263 | .getroot = nfs4_proc_get_root, |
6264 | .getattr = nfs4_proc_getattr, | |
6265 | .setattr = nfs4_proc_setattr, | |
6266 | .lookup = nfs4_proc_lookup, | |
6267 | .access = nfs4_proc_access, | |
6268 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
6269 | .create = nfs4_proc_create, |
6270 | .remove = nfs4_proc_remove, | |
6271 | .unlink_setup = nfs4_proc_unlink_setup, | |
6272 | .unlink_done = nfs4_proc_unlink_done, | |
6273 | .rename = nfs4_proc_rename, | |
d3d4152a JL |
6274 | .rename_setup = nfs4_proc_rename_setup, |
6275 | .rename_done = nfs4_proc_rename_done, | |
1da177e4 LT |
6276 | .link = nfs4_proc_link, |
6277 | .symlink = nfs4_proc_symlink, | |
6278 | .mkdir = nfs4_proc_mkdir, | |
6279 | .rmdir = nfs4_proc_remove, | |
6280 | .readdir = nfs4_proc_readdir, | |
6281 | .mknod = nfs4_proc_mknod, | |
6282 | .statfs = nfs4_proc_statfs, | |
6283 | .fsinfo = nfs4_proc_fsinfo, | |
6284 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 6285 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
6286 | .decode_dirent = nfs4_decode_dirent, |
6287 | .read_setup = nfs4_proc_read_setup, | |
ec06c096 | 6288 | .read_done = nfs4_read_done, |
1da177e4 | 6289 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 6290 | .write_done = nfs4_write_done, |
1da177e4 | 6291 | .commit_setup = nfs4_proc_commit_setup, |
788e7a89 | 6292 | .commit_done = nfs4_commit_done, |
1da177e4 | 6293 | .lock = nfs4_proc_lock, |
e50a1c2e | 6294 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 6295 | .close_context = nfs4_close_context, |
2b484297 | 6296 | .open_context = nfs4_atomic_open, |
45a52a02 | 6297 | .init_client = nfs4_init_client, |
5a5ea0d4 | 6298 | .secinfo = nfs4_proc_secinfo, |
1da177e4 LT |
6299 | }; |
6300 | ||
64c2ce8b AK |
6301 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
6302 | .prefix = XATTR_NAME_NFSV4_ACL, | |
6303 | .list = nfs4_xattr_list_nfs4_acl, | |
6304 | .get = nfs4_xattr_get_nfs4_acl, | |
6305 | .set = nfs4_xattr_set_nfs4_acl, | |
6306 | }; | |
6307 | ||
6308 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
6309 | &nfs4_xattr_nfs4_acl_handler, | |
6310 | NULL | |
6311 | }; | |
6312 | ||
1da177e4 LT |
6313 | /* |
6314 | * Local variables: | |
6315 | * c-basic-offset: 8 | |
6316 | * End: | |
6317 | */ |