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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)) { |
ea028ac9 AA |
555 | /* |
556 | * The state manager will wait until the slot table is empty. | |
557 | * Schedule the reset thread | |
558 | */ | |
05f0d236 | 559 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
b069d94a | 560 | spin_unlock(&tbl->slot_tbl_lock); |
bcb56164 | 561 | dprintk("%s Schedule Session Reset\n", __func__); |
05f0d236 | 562 | return -EAGAIN; |
b069d94a AA |
563 | } |
564 | ||
689cf5c1 AB |
565 | if (!rpc_queue_empty(&tbl->slot_tbl_waitq) && |
566 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { | |
567 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
568 | spin_unlock(&tbl->slot_tbl_lock); | |
569 | dprintk("%s enforce FIFO order\n", __func__); | |
570 | return -EAGAIN; | |
571 | } | |
572 | ||
40ead580 | 573 | slotid = nfs4_find_slot(tbl); |
fbcd4abc AA |
574 | if (slotid == NFS4_MAX_SLOT_TABLE) { |
575 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
576 | spin_unlock(&tbl->slot_tbl_lock); | |
577 | dprintk("<-- %s: no free slots\n", __func__); | |
578 | return -EAGAIN; | |
579 | } | |
580 | spin_unlock(&tbl->slot_tbl_lock); | |
581 | ||
689cf5c1 | 582 | rpc_task_set_priority(task, RPC_PRIORITY_NORMAL); |
fbcd4abc | 583 | slot = tbl->slots + slotid; |
99fe60d0 | 584 | args->sa_session = session; |
fbcd4abc AA |
585 | args->sa_slotid = slotid; |
586 | args->sa_cache_this = cache_reply; | |
587 | ||
588 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, slotid, slot->seq_nr); | |
589 | ||
99fe60d0 | 590 | res->sr_session = session; |
dfb4f309 | 591 | res->sr_slot = slot; |
fbcd4abc | 592 | res->sr_renewal_time = jiffies; |
2a6e26cd | 593 | res->sr_status_flags = 0; |
fbcd4abc AA |
594 | /* |
595 | * sr_status is only set in decode_sequence, and so will remain | |
596 | * set to 1 if an rpc level failure occurs. | |
597 | */ | |
598 | res->sr_status = 1; | |
ce5039c1 AA |
599 | return 0; |
600 | } | |
dc70d7b3 | 601 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 602 | |
035168ab | 603 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
604 | struct nfs4_sequence_args *args, |
605 | struct nfs4_sequence_res *res, | |
606 | int cache_reply, | |
607 | struct rpc_task *task) | |
608 | { | |
035168ab | 609 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
610 | int ret = 0; |
611 | ||
035168ab TM |
612 | if (session == NULL) { |
613 | args->sa_session = NULL; | |
614 | res->sr_session = NULL; | |
615 | goto out; | |
616 | } | |
617 | ||
12364a4f | 618 | dprintk("--> %s clp %p session %p sr_slot %td\n", |
dfb4f309 BH |
619 | __func__, session->clp, session, res->sr_slot ? |
620 | res->sr_slot - session->fc_slot_table.slots : -1); | |
ce5039c1 | 621 | |
035168ab | 622 | ret = nfs41_setup_sequence(session, args, res, cache_reply, |
ce5039c1 | 623 | task); |
ce5039c1 AA |
624 | out: |
625 | dprintk("<-- %s status=%d\n", __func__, ret); | |
626 | return ret; | |
627 | } | |
628 | ||
629 | struct nfs41_call_sync_data { | |
035168ab | 630 | const struct nfs_server *seq_server; |
ce5039c1 AA |
631 | struct nfs4_sequence_args *seq_args; |
632 | struct nfs4_sequence_res *seq_res; | |
633 | int cache_reply; | |
634 | }; | |
635 | ||
636 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
637 | { | |
638 | struct nfs41_call_sync_data *data = calldata; | |
639 | ||
035168ab TM |
640 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
641 | ||
642 | if (nfs4_setup_sequence(data->seq_server, data->seq_args, | |
ce5039c1 AA |
643 | data->seq_res, data->cache_reply, task)) |
644 | return; | |
645 | rpc_call_start(task); | |
646 | } | |
647 | ||
b257957e AB |
648 | static void nfs41_call_priv_sync_prepare(struct rpc_task *task, void *calldata) |
649 | { | |
650 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
651 | nfs41_call_sync_prepare(task, calldata); | |
652 | } | |
653 | ||
69ab40c4 AA |
654 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
655 | { | |
656 | struct nfs41_call_sync_data *data = calldata; | |
657 | ||
14516c3a | 658 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
659 | } |
660 | ||
ce5039c1 AA |
661 | struct rpc_call_ops nfs41_call_sync_ops = { |
662 | .rpc_call_prepare = nfs41_call_sync_prepare, | |
69ab40c4 | 663 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
664 | }; |
665 | ||
b257957e AB |
666 | struct rpc_call_ops nfs41_call_priv_sync_ops = { |
667 | .rpc_call_prepare = nfs41_call_priv_sync_prepare, | |
668 | .rpc_call_done = nfs41_call_sync_done, | |
669 | }; | |
670 | ||
7c513058 BS |
671 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
672 | struct nfs_server *server, | |
ce5039c1 AA |
673 | struct rpc_message *msg, |
674 | struct nfs4_sequence_args *args, | |
675 | struct nfs4_sequence_res *res, | |
b257957e AB |
676 | int cache_reply, |
677 | int privileged) | |
ce5039c1 AA |
678 | { |
679 | int ret; | |
680 | struct rpc_task *task; | |
681 | struct nfs41_call_sync_data data = { | |
035168ab | 682 | .seq_server = server, |
ce5039c1 AA |
683 | .seq_args = args, |
684 | .seq_res = res, | |
685 | .cache_reply = cache_reply, | |
686 | }; | |
687 | struct rpc_task_setup task_setup = { | |
7c513058 | 688 | .rpc_client = clnt, |
ce5039c1 AA |
689 | .rpc_message = msg, |
690 | .callback_ops = &nfs41_call_sync_ops, | |
691 | .callback_data = &data | |
692 | }; | |
693 | ||
dfb4f309 | 694 | res->sr_slot = NULL; |
b257957e AB |
695 | if (privileged) |
696 | task_setup.callback_ops = &nfs41_call_priv_sync_ops; | |
ce5039c1 AA |
697 | task = rpc_run_task(&task_setup); |
698 | if (IS_ERR(task)) | |
699 | ret = PTR_ERR(task); | |
700 | else { | |
701 | ret = task->tk_status; | |
702 | rpc_put_task(task); | |
703 | } | |
704 | return ret; | |
705 | } | |
706 | ||
7c513058 BS |
707 | int _nfs4_call_sync_session(struct rpc_clnt *clnt, |
708 | struct nfs_server *server, | |
cccef3b9 AA |
709 | struct rpc_message *msg, |
710 | struct nfs4_sequence_args *args, | |
711 | struct nfs4_sequence_res *res, | |
712 | int cache_reply) | |
713 | { | |
7c513058 | 714 | return nfs4_call_sync_sequence(clnt, server, msg, args, res, cache_reply, 0); |
cccef3b9 AA |
715 | } |
716 | ||
df896455 | 717 | #else |
14516c3a TM |
718 | static int nfs4_sequence_done(struct rpc_task *task, |
719 | struct nfs4_sequence_res *res) | |
df896455 | 720 | { |
14516c3a | 721 | return 1; |
df896455 | 722 | } |
cccef3b9 AA |
723 | #endif /* CONFIG_NFS_V4_1 */ |
724 | ||
7c513058 BS |
725 | int _nfs4_call_sync(struct rpc_clnt *clnt, |
726 | struct nfs_server *server, | |
cccef3b9 AA |
727 | struct rpc_message *msg, |
728 | struct nfs4_sequence_args *args, | |
729 | struct nfs4_sequence_res *res, | |
730 | int cache_reply) | |
731 | { | |
f3752975 | 732 | args->sa_session = res->sr_session = NULL; |
7c513058 | 733 | return rpc_call_sync(clnt, msg, 0); |
cccef3b9 AA |
734 | } |
735 | ||
e73b83f2 | 736 | static inline |
7c513058 BS |
737 | int nfs4_call_sync(struct rpc_clnt *clnt, |
738 | struct nfs_server *server, | |
e73b83f2 BS |
739 | struct rpc_message *msg, |
740 | struct nfs4_sequence_args *args, | |
741 | struct nfs4_sequence_res *res, | |
742 | int cache_reply) | |
743 | { | |
7c513058 BS |
744 | return server->nfs_client->cl_mvops->call_sync(clnt, server, msg, |
745 | args, res, cache_reply); | |
e73b83f2 | 746 | } |
cccef3b9 | 747 | |
38478b24 | 748 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 749 | { |
38478b24 | 750 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 751 | |
38478b24 | 752 | spin_lock(&dir->i_lock); |
40d24704 | 753 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; |
a9a4a87a | 754 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 755 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 756 | dir->i_version = cinfo->after; |
38478b24 | 757 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
758 | } |
759 | ||
e56e0b78 | 760 | struct nfs4_opendata { |
c6d00e63 | 761 | struct kref kref; |
e56e0b78 TM |
762 | struct nfs_openargs o_arg; |
763 | struct nfs_openres o_res; | |
cdd4e68b TM |
764 | struct nfs_open_confirmargs c_arg; |
765 | struct nfs_open_confirmres c_res; | |
e56e0b78 TM |
766 | struct nfs_fattr f_attr; |
767 | struct nfs_fattr dir_attr; | |
e56e0b78 | 768 | struct dentry *dir; |
82a2c1b7 | 769 | struct dentry *dentry; |
e56e0b78 | 770 | struct nfs4_state_owner *owner; |
aac00a8d | 771 | struct nfs4_state *state; |
e56e0b78 | 772 | struct iattr attrs; |
26e976a8 | 773 | unsigned long timestamp; |
3e309914 | 774 | unsigned int rpc_done : 1; |
24ac23ab TM |
775 | int rpc_status; |
776 | int cancelled; | |
e56e0b78 TM |
777 | }; |
778 | ||
2ced46c2 TM |
779 | |
780 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
781 | { | |
782 | p->o_res.f_attr = &p->f_attr; | |
783 | p->o_res.dir_attr = &p->dir_attr; | |
c1d51931 TM |
784 | p->o_res.seqid = p->o_arg.seqid; |
785 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 TM |
786 | p->o_res.server = p->o_arg.server; |
787 | nfs_fattr_init(&p->f_attr); | |
788 | nfs_fattr_init(&p->dir_attr); | |
789 | } | |
790 | ||
82a2c1b7 | 791 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 792 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be TM |
793 | const struct iattr *attrs, |
794 | gfp_t gfp_mask) | |
e56e0b78 | 795 | { |
82a2c1b7 | 796 | struct dentry *parent = dget_parent(dentry); |
e56e0b78 TM |
797 | struct inode *dir = parent->d_inode; |
798 | struct nfs_server *server = NFS_SERVER(dir); | |
799 | struct nfs4_opendata *p; | |
800 | ||
8535b2be | 801 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
802 | if (p == NULL) |
803 | goto err; | |
8535b2be | 804 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 TM |
805 | if (p->o_arg.seqid == NULL) |
806 | goto err_free; | |
82a2c1b7 AV |
807 | nfs_sb_active(dentry->d_sb); |
808 | p->dentry = dget(dentry); | |
e56e0b78 TM |
809 | p->dir = parent; |
810 | p->owner = sp; | |
811 | atomic_inc(&sp->so_count); | |
812 | p->o_arg.fh = NFS_FH(dir); | |
dc0b027d TM |
813 | p->o_arg.open_flags = flags; |
814 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
7539bbab | 815 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 816 | p->o_arg.id = sp->so_owner_id.id; |
82a2c1b7 | 817 | p->o_arg.name = &dentry->d_name; |
e56e0b78 TM |
818 | p->o_arg.server = server; |
819 | p->o_arg.bitmask = server->attr_bitmask; | |
820 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; | |
d77d76ff TM |
821 | if (flags & O_CREAT) { |
822 | u32 *s; | |
823 | ||
e56e0b78 TM |
824 | p->o_arg.u.attrs = &p->attrs; |
825 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
d77d76ff TM |
826 | s = (u32 *) p->o_arg.u.verifier.data; |
827 | s[0] = jiffies; | |
828 | s[1] = current->pid; | |
e56e0b78 | 829 | } |
cdd4e68b TM |
830 | p->c_arg.fh = &p->o_res.fh; |
831 | p->c_arg.stateid = &p->o_res.stateid; | |
832 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 833 | nfs4_init_opendata_res(p); |
c6d00e63 | 834 | kref_init(&p->kref); |
e56e0b78 TM |
835 | return p; |
836 | err_free: | |
837 | kfree(p); | |
838 | err: | |
839 | dput(parent); | |
840 | return NULL; | |
841 | } | |
842 | ||
c6d00e63 | 843 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 844 | { |
c6d00e63 TM |
845 | struct nfs4_opendata *p = container_of(kref, |
846 | struct nfs4_opendata, kref); | |
82a2c1b7 | 847 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
848 | |
849 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
850 | if (p->state != NULL) |
851 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
852 | nfs4_put_state_owner(p->owner); |
853 | dput(p->dir); | |
82a2c1b7 AV |
854 | dput(p->dentry); |
855 | nfs_sb_deactive(sb); | |
c6d00e63 TM |
856 | kfree(p); |
857 | } | |
858 | ||
859 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
860 | { | |
861 | if (p != NULL) | |
862 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
863 | } |
864 | ||
06f814a3 TM |
865 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
866 | { | |
06f814a3 TM |
867 | int ret; |
868 | ||
06f814a3 | 869 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
870 | return ret; |
871 | } | |
872 | ||
dc0b027d | 873 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
874 | { |
875 | int ret = 0; | |
dc0b027d TM |
876 | |
877 | if (open_mode & O_EXCL) | |
878 | goto out; | |
879 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 880 | case FMODE_READ: |
88069f77 TM |
881 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
882 | && state->n_rdonly != 0; | |
6ee41268 TM |
883 | break; |
884 | case FMODE_WRITE: | |
88069f77 TM |
885 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
886 | && state->n_wronly != 0; | |
6ee41268 TM |
887 | break; |
888 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
889 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
890 | && state->n_rdwr != 0; | |
6ee41268 | 891 | } |
dc0b027d | 892 | out: |
6ee41268 TM |
893 | return ret; |
894 | } | |
895 | ||
dc0b027d | 896 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 897 | { |
652f89f6 TM |
898 | if (delegation == NULL) |
899 | return 0; | |
dc0b027d | 900 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 901 | return 0; |
15c831bf | 902 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 903 | return 0; |
b7391f44 | 904 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
905 | return 1; |
906 | } | |
907 | ||
dc0b027d | 908 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 909 | { |
dc0b027d | 910 | switch (fmode) { |
e7616923 TM |
911 | case FMODE_WRITE: |
912 | state->n_wronly++; | |
913 | break; | |
914 | case FMODE_READ: | |
915 | state->n_rdonly++; | |
916 | break; | |
917 | case FMODE_READ|FMODE_WRITE: | |
918 | state->n_rdwr++; | |
919 | } | |
dc0b027d | 920 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
921 | } |
922 | ||
dc0b027d | 923 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
924 | { |
925 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
926 | memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data)); | |
927 | memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data)); | |
dc0b027d | 928 | switch (fmode) { |
003707c7 TM |
929 | case FMODE_READ: |
930 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
931 | break; | |
932 | case FMODE_WRITE: | |
933 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
934 | break; | |
935 | case FMODE_READ|FMODE_WRITE: | |
936 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
937 | } | |
e7616923 TM |
938 | } |
939 | ||
dc0b027d | 940 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 941 | { |
8bda4e4c | 942 | write_seqlock(&state->seqlock); |
dc0b027d | 943 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 944 | write_sequnlock(&state->seqlock); |
003707c7 TM |
945 | } |
946 | ||
dc0b027d | 947 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 948 | { |
8bda4e4c TM |
949 | /* |
950 | * Protect the call to nfs4_state_set_mode_locked and | |
951 | * serialise the stateid update | |
952 | */ | |
953 | write_seqlock(&state->seqlock); | |
003707c7 TM |
954 | if (deleg_stateid != NULL) { |
955 | memcpy(state->stateid.data, deleg_stateid->data, sizeof(state->stateid.data)); | |
956 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
957 | } | |
958 | if (open_stateid != NULL) | |
dc0b027d | 959 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
960 | write_sequnlock(&state->seqlock); |
961 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 962 | update_open_stateflags(state, fmode); |
ec073428 | 963 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
964 | } |
965 | ||
dc0b027d | 966 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
967 | { |
968 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
969 | struct nfs_delegation *deleg_cur; | |
970 | int ret = 0; | |
971 | ||
dc0b027d | 972 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
973 | |
974 | rcu_read_lock(); | |
975 | deleg_cur = rcu_dereference(nfsi->delegation); | |
976 | if (deleg_cur == NULL) | |
977 | goto no_delegation; | |
978 | ||
979 | spin_lock(&deleg_cur->lock); | |
980 | if (nfsi->delegation != deleg_cur || | |
dc0b027d | 981 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
982 | goto no_delegation_unlock; |
983 | ||
984 | if (delegation == NULL) | |
985 | delegation = &deleg_cur->stateid; | |
986 | else if (memcmp(deleg_cur->stateid.data, delegation->data, NFS4_STATEID_SIZE) != 0) | |
987 | goto no_delegation_unlock; | |
988 | ||
b7391f44 | 989 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 990 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
991 | ret = 1; |
992 | no_delegation_unlock: | |
993 | spin_unlock(&deleg_cur->lock); | |
994 | no_delegation: | |
995 | rcu_read_unlock(); | |
996 | ||
997 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 998 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
999 | ret = 1; |
1000 | } | |
1001 | ||
1002 | return ret; | |
1003 | } | |
1004 | ||
1005 | ||
dc0b027d | 1006 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1007 | { |
1008 | struct nfs_delegation *delegation; | |
1009 | ||
1010 | rcu_read_lock(); | |
1011 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1012 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1013 | rcu_read_unlock(); |
1014 | return; | |
1015 | } | |
1016 | rcu_read_unlock(); | |
1017 | nfs_inode_return_delegation(inode); | |
1018 | } | |
1019 | ||
6ee41268 | 1020 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1021 | { |
1022 | struct nfs4_state *state = opendata->state; | |
1023 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1024 | struct nfs_delegation *delegation; | |
dc0b027d TM |
1025 | int open_mode = opendata->o_arg.open_flags & O_EXCL; |
1026 | fmode_t fmode = opendata->o_arg.fmode; | |
aac00a8d TM |
1027 | nfs4_stateid stateid; |
1028 | int ret = -EAGAIN; | |
1029 | ||
aac00a8d | 1030 | for (;;) { |
dc0b027d | 1031 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 1032 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
1033 | if (can_open_cached(state, fmode, open_mode)) { |
1034 | update_open_stateflags(state, fmode); | |
6ee41268 | 1035 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
1036 | goto out_return_state; |
1037 | } | |
1038 | spin_unlock(&state->owner->so_lock); | |
1039 | } | |
34310430 TM |
1040 | rcu_read_lock(); |
1041 | delegation = rcu_dereference(nfsi->delegation); | |
652f89f6 | 1042 | if (!can_open_delegated(delegation, fmode)) { |
34310430 | 1043 | rcu_read_unlock(); |
aac00a8d | 1044 | break; |
34310430 | 1045 | } |
aac00a8d TM |
1046 | /* Save the delegation */ |
1047 | memcpy(stateid.data, delegation->stateid.data, sizeof(stateid.data)); | |
1048 | rcu_read_unlock(); | |
af22f94a | 1049 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
1050 | if (ret != 0) |
1051 | goto out; | |
1052 | ret = -EAGAIN; | |
34310430 TM |
1053 | |
1054 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1055 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1056 | goto out_return_state; |
aac00a8d | 1057 | } |
aac00a8d TM |
1058 | out: |
1059 | return ERR_PTR(ret); | |
1060 | out_return_state: | |
1061 | atomic_inc(&state->count); | |
1062 | return state; | |
1063 | } | |
1064 | ||
24ac23ab TM |
1065 | static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) |
1066 | { | |
1067 | struct inode *inode; | |
1068 | struct nfs4_state *state = NULL; | |
003707c7 | 1069 | struct nfs_delegation *delegation; |
1b370bc2 | 1070 | int ret; |
24ac23ab | 1071 | |
aac00a8d | 1072 | if (!data->rpc_done) { |
6ee41268 | 1073 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1074 | goto out; |
1075 | } | |
1076 | ||
1b370bc2 | 1077 | ret = -EAGAIN; |
24ac23ab | 1078 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1079 | goto err; |
24ac23ab | 1080 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 1081 | ret = PTR_ERR(inode); |
03f28e3a | 1082 | if (IS_ERR(inode)) |
1b370bc2 TM |
1083 | goto err; |
1084 | ret = -ENOMEM; | |
24ac23ab TM |
1085 | state = nfs4_get_open_state(inode, data->owner); |
1086 | if (state == NULL) | |
1b370bc2 | 1087 | goto err_put_inode; |
549d6ed5 | 1088 | if (data->o_res.delegation_type != 0) { |
549d6ed5 TM |
1089 | int delegation_flags = 0; |
1090 | ||
003707c7 TM |
1091 | rcu_read_lock(); |
1092 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
1093 | if (delegation) | |
1094 | delegation_flags = delegation->flags; | |
1095 | rcu_read_unlock(); | |
652f89f6 TM |
1096 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) { |
1097 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " | |
1098 | "returning a delegation for " | |
1099 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
1100 | NFS_CLIENT(inode)->cl_server); | |
1101 | } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) | |
549d6ed5 TM |
1102 | nfs_inode_set_delegation(state->inode, |
1103 | data->owner->so_cred, | |
1104 | &data->o_res); | |
1105 | else | |
1106 | nfs_inode_reclaim_delegation(state->inode, | |
1107 | data->owner->so_cred, | |
1108 | &data->o_res); | |
1109 | } | |
34310430 TM |
1110 | |
1111 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
dc0b027d | 1112 | data->o_arg.fmode); |
24ac23ab | 1113 | iput(inode); |
aac00a8d | 1114 | out: |
24ac23ab | 1115 | return state; |
1b370bc2 TM |
1116 | err_put_inode: |
1117 | iput(inode); | |
1118 | err: | |
1119 | return ERR_PTR(ret); | |
24ac23ab TM |
1120 | } |
1121 | ||
864472e9 TM |
1122 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1123 | { | |
1124 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1125 | struct nfs_open_context *ctx; | |
1126 | ||
1127 | spin_lock(&state->inode->i_lock); | |
1128 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1129 | if (ctx->state != state) | |
1130 | continue; | |
1131 | get_nfs_open_context(ctx); | |
1132 | spin_unlock(&state->inode->i_lock); | |
1133 | return ctx; | |
1134 | } | |
1135 | spin_unlock(&state->inode->i_lock); | |
1136 | return ERR_PTR(-ENOENT); | |
1137 | } | |
1138 | ||
6f220ed5 TM |
1139 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
1140 | { | |
1141 | struct nfs4_opendata *opendata; | |
1142 | ||
3d4ff43d | 1143 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, NULL, GFP_NOFS); |
6f220ed5 TM |
1144 | if (opendata == NULL) |
1145 | return ERR_PTR(-ENOMEM); | |
1146 | opendata->state = state; | |
1147 | atomic_inc(&state->count); | |
1148 | return opendata; | |
1149 | } | |
1150 | ||
dc0b027d | 1151 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1152 | { |
2ced46c2 | 1153 | struct nfs4_state *newstate; |
864472e9 TM |
1154 | int ret; |
1155 | ||
dc0b027d TM |
1156 | opendata->o_arg.open_flags = 0; |
1157 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1158 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1159 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1160 | nfs4_init_opendata_res(opendata); | |
b257957e | 1161 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1162 | if (ret != 0) |
1163 | return ret; | |
2ced46c2 | 1164 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1165 | if (IS_ERR(newstate)) |
1166 | return PTR_ERR(newstate); | |
643168c2 | 1167 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1168 | *res = newstate; |
864472e9 TM |
1169 | return 0; |
1170 | } | |
1171 | ||
1172 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1173 | { | |
864472e9 | 1174 | struct nfs4_state *newstate; |
864472e9 TM |
1175 | int ret; |
1176 | ||
1177 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1178 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
1179 | smp_rmb(); |
1180 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1181 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1182 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1183 | if (ret != 0) |
1184 | return ret; | |
2ced46c2 TM |
1185 | if (newstate != state) |
1186 | return -ESTALE; | |
864472e9 TM |
1187 | } |
1188 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1189 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1190 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1191 | if (ret != 0) |
1192 | return ret; | |
2ced46c2 TM |
1193 | if (newstate != state) |
1194 | return -ESTALE; | |
864472e9 TM |
1195 | } |
1196 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1197 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1198 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1199 | if (ret != 0) |
1200 | return ret; | |
2ced46c2 TM |
1201 | if (newstate != state) |
1202 | return -ESTALE; | |
864472e9 | 1203 | } |
1ac7e2fd TM |
1204 | /* |
1205 | * We may have performed cached opens for all three recoveries. | |
1206 | * Check if we need to update the current stateid. | |
1207 | */ | |
1208 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
1209 | memcmp(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)) != 0) { | |
8bda4e4c | 1210 | write_seqlock(&state->seqlock); |
1ac7e2fd TM |
1211 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
1212 | memcpy(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)); | |
8bda4e4c | 1213 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1214 | } |
864472e9 TM |
1215 | return 0; |
1216 | } | |
1217 | ||
1da177e4 LT |
1218 | /* |
1219 | * OPEN_RECLAIM: | |
1220 | * reclaim state on the server after a reboot. | |
1da177e4 | 1221 | */ |
539cd03a | 1222 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1223 | { |
1ac7e2fd | 1224 | struct nfs_delegation *delegation; |
864472e9 | 1225 | struct nfs4_opendata *opendata; |
dc0b027d | 1226 | fmode_t delegation_type = 0; |
1da177e4 LT |
1227 | int status; |
1228 | ||
6f220ed5 TM |
1229 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1230 | if (IS_ERR(opendata)) | |
1231 | return PTR_ERR(opendata); | |
864472e9 TM |
1232 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
1233 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
1234 | rcu_read_lock(); |
1235 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1236 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1237 | delegation_type = delegation->type; |
1ac7e2fd | 1238 | rcu_read_unlock(); |
864472e9 TM |
1239 | opendata->o_arg.u.delegation_type = delegation_type; |
1240 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1241 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1242 | return status; |
1243 | } | |
1244 | ||
539cd03a | 1245 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1246 | { |
1247 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1248 | struct nfs4_exception exception = { }; | |
1249 | int err; | |
1250 | do { | |
539cd03a | 1251 | err = _nfs4_do_open_reclaim(ctx, state); |
168667c4 | 1252 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1253 | break; |
1254 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1255 | } while (exception.retry); |
1256 | return err; | |
1257 | } | |
1258 | ||
864472e9 TM |
1259 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1260 | { | |
1261 | struct nfs_open_context *ctx; | |
1262 | int ret; | |
1263 | ||
1264 | ctx = nfs4_state_find_open_context(state); | |
1265 | if (IS_ERR(ctx)) | |
1266 | return PTR_ERR(ctx); | |
539cd03a | 1267 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1268 | put_nfs_open_context(ctx); |
1269 | return ret; | |
1270 | } | |
1271 | ||
13437e12 | 1272 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 1273 | { |
e56e0b78 | 1274 | struct nfs4_opendata *opendata; |
864472e9 | 1275 | int ret; |
1da177e4 | 1276 | |
6f220ed5 TM |
1277 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1278 | if (IS_ERR(opendata)) | |
1279 | return PTR_ERR(opendata); | |
e56e0b78 | 1280 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
13437e12 | 1281 | memcpy(opendata->o_arg.u.delegation.data, stateid->data, |
e56e0b78 | 1282 | sizeof(opendata->o_arg.u.delegation.data)); |
864472e9 | 1283 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 1284 | nfs4_opendata_put(opendata); |
864472e9 | 1285 | return ret; |
1da177e4 LT |
1286 | } |
1287 | ||
13437e12 | 1288 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
1289 | { |
1290 | struct nfs4_exception exception = { }; | |
539cd03a | 1291 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
1292 | int err; |
1293 | do { | |
13437e12 | 1294 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
1295 | switch (err) { |
1296 | case 0: | |
965b5d67 TM |
1297 | case -ENOENT: |
1298 | case -ESTALE: | |
1299 | goto out; | |
bcfa49f6 RL |
1300 | case -NFS4ERR_BADSESSION: |
1301 | case -NFS4ERR_BADSLOT: | |
1302 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1303 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1304 | case -NFS4ERR_DEADSESSION: | |
0400a6b0 | 1305 | nfs4_schedule_session_recovery(server->nfs_client->cl_session); |
bcfa49f6 | 1306 | goto out; |
1da177e4 LT |
1307 | case -NFS4ERR_STALE_CLIENTID: |
1308 | case -NFS4ERR_STALE_STATEID: | |
1309 | case -NFS4ERR_EXPIRED: | |
1310 | /* Don't recall a delegation if it was lost */ | |
0400a6b0 | 1311 | nfs4_schedule_lease_recovery(server->nfs_client); |
965b5d67 TM |
1312 | goto out; |
1313 | case -ERESTARTSYS: | |
1314 | /* | |
1315 | * The show must go on: exit, but mark the | |
1316 | * stateid as needing recovery. | |
1317 | */ | |
1318 | case -NFS4ERR_ADMIN_REVOKED: | |
1319 | case -NFS4ERR_BAD_STATEID: | |
0400a6b0 | 1320 | nfs4_schedule_stateid_recovery(server, state); |
168667c4 TM |
1321 | case -EKEYEXPIRED: |
1322 | /* | |
1323 | * User RPCSEC_GSS context has expired. | |
1324 | * We cannot recover this stateid now, so | |
1325 | * skip it and allow recovery thread to | |
1326 | * proceed. | |
1327 | */ | |
965b5d67 TM |
1328 | case -ENOMEM: |
1329 | err = 0; | |
1330 | goto out; | |
1da177e4 LT |
1331 | } |
1332 | err = nfs4_handle_exception(server, err, &exception); | |
1333 | } while (exception.retry); | |
965b5d67 | 1334 | out: |
1da177e4 LT |
1335 | return err; |
1336 | } | |
1337 | ||
cdd4e68b TM |
1338 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1339 | { | |
1340 | struct nfs4_opendata *data = calldata; | |
1341 | ||
1342 | data->rpc_status = task->tk_status; | |
26e976a8 | 1343 | if (data->rpc_status == 0) { |
cdd4e68b TM |
1344 | memcpy(data->o_res.stateid.data, data->c_res.stateid.data, |
1345 | sizeof(data->o_res.stateid.data)); | |
bb22629e | 1346 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1347 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1348 | data->rpc_done = 1; |
26e976a8 | 1349 | } |
cdd4e68b TM |
1350 | } |
1351 | ||
1352 | static void nfs4_open_confirm_release(void *calldata) | |
1353 | { | |
1354 | struct nfs4_opendata *data = calldata; | |
1355 | struct nfs4_state *state = NULL; | |
1356 | ||
1357 | /* If this request hasn't been cancelled, do nothing */ | |
1358 | if (data->cancelled == 0) | |
1359 | goto out_free; | |
1360 | /* In case of error, no cleanup! */ | |
3e309914 | 1361 | if (!data->rpc_done) |
cdd4e68b | 1362 | goto out_free; |
cdd4e68b | 1363 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1364 | if (!IS_ERR(state)) |
643168c2 | 1365 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1366 | out_free: |
c6d00e63 | 1367 | nfs4_opendata_put(data); |
cdd4e68b TM |
1368 | } |
1369 | ||
1370 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1371 | .rpc_call_done = nfs4_open_confirm_done, |
1372 | .rpc_release = nfs4_open_confirm_release, | |
1373 | }; | |
1374 | ||
1375 | /* | |
1376 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1377 | */ | |
1378 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1379 | { | |
1380 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1381 | struct rpc_task *task; | |
5138fde0 TM |
1382 | struct rpc_message msg = { |
1383 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1384 | .rpc_argp = &data->c_arg, | |
1385 | .rpc_resp = &data->c_res, | |
1386 | .rpc_cred = data->owner->so_cred, | |
1387 | }; | |
c970aa85 TM |
1388 | struct rpc_task_setup task_setup_data = { |
1389 | .rpc_client = server->client, | |
5138fde0 | 1390 | .rpc_message = &msg, |
c970aa85 TM |
1391 | .callback_ops = &nfs4_open_confirm_ops, |
1392 | .callback_data = data, | |
101070ca | 1393 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1394 | .flags = RPC_TASK_ASYNC, |
1395 | }; | |
1da177e4 LT |
1396 | int status; |
1397 | ||
c6d00e63 | 1398 | kref_get(&data->kref); |
3e309914 TM |
1399 | data->rpc_done = 0; |
1400 | data->rpc_status = 0; | |
5138fde0 | 1401 | data->timestamp = jiffies; |
c970aa85 | 1402 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1403 | if (IS_ERR(task)) |
cdd4e68b | 1404 | return PTR_ERR(task); |
cdd4e68b TM |
1405 | status = nfs4_wait_for_completion_rpc_task(task); |
1406 | if (status != 0) { | |
1407 | data->cancelled = 1; | |
1408 | smp_wmb(); | |
1409 | } else | |
1410 | status = data->rpc_status; | |
e6b3c4db | 1411 | rpc_put_task(task); |
1da177e4 LT |
1412 | return status; |
1413 | } | |
1414 | ||
24ac23ab | 1415 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1416 | { |
24ac23ab TM |
1417 | struct nfs4_opendata *data = calldata; |
1418 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 1419 | |
24ac23ab TM |
1420 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
1421 | return; | |
aac00a8d TM |
1422 | /* |
1423 | * Check if we still need to send an OPEN call, or if we can use | |
1424 | * a delegation instead. | |
1425 | */ | |
1426 | if (data->state != NULL) { | |
1427 | struct nfs_delegation *delegation; | |
1428 | ||
dc0b027d | 1429 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1430 | goto out_no_action; |
aac00a8d TM |
1431 | rcu_read_lock(); |
1432 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
652f89f6 TM |
1433 | if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR && |
1434 | can_open_delegated(delegation, data->o_arg.fmode)) | |
1435 | goto unlock_no_action; | |
aac00a8d TM |
1436 | rcu_read_unlock(); |
1437 | } | |
24ac23ab | 1438 | /* Update sequence id. */ |
9f958ab8 | 1439 | data->o_arg.id = sp->so_owner_id.id; |
1f0e890d | 1440 | data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; |
6f220ed5 | 1441 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 1442 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
6f220ed5 TM |
1443 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1444 | } | |
26e976a8 | 1445 | data->timestamp = jiffies; |
035168ab | 1446 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c AA |
1447 | &data->o_arg.seq_args, |
1448 | &data->o_res.seq_res, 1, task)) | |
1449 | return; | |
5138fde0 | 1450 | rpc_call_start(task); |
6ee41268 | 1451 | return; |
652f89f6 TM |
1452 | unlock_no_action: |
1453 | rcu_read_unlock(); | |
6ee41268 TM |
1454 | out_no_action: |
1455 | task->tk_action = NULL; | |
1456 | ||
24ac23ab | 1457 | } |
1da177e4 | 1458 | |
b257957e AB |
1459 | static void nfs4_recover_open_prepare(struct rpc_task *task, void *calldata) |
1460 | { | |
1461 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
1462 | nfs4_open_prepare(task, calldata); | |
1463 | } | |
1464 | ||
24ac23ab TM |
1465 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1466 | { | |
1467 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1468 | |
24ac23ab | 1469 | data->rpc_status = task->tk_status; |
d898528c | 1470 | |
14516c3a TM |
1471 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1472 | return; | |
d898528c | 1473 | |
24ac23ab TM |
1474 | if (task->tk_status == 0) { |
1475 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1476 | case S_IFREG: |
1477 | break; | |
1478 | case S_IFLNK: | |
24ac23ab | 1479 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1480 | break; |
1481 | case S_IFDIR: | |
24ac23ab | 1482 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1483 | break; |
1484 | default: | |
24ac23ab | 1485 | data->rpc_status = -ENOTDIR; |
6f926b5b | 1486 | } |
26e976a8 | 1487 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1488 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1489 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1490 | } |
3e309914 | 1491 | data->rpc_done = 1; |
24ac23ab | 1492 | } |
6f926b5b | 1493 | |
24ac23ab TM |
1494 | static void nfs4_open_release(void *calldata) |
1495 | { | |
1496 | struct nfs4_opendata *data = calldata; | |
1497 | struct nfs4_state *state = NULL; | |
1498 | ||
1499 | /* If this request hasn't been cancelled, do nothing */ | |
1500 | if (data->cancelled == 0) | |
1501 | goto out_free; | |
1502 | /* In case of error, no cleanup! */ | |
3e309914 | 1503 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1504 | goto out_free; |
1505 | /* In case we need an open_confirm, no cleanup! */ | |
1506 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1507 | goto out_free; | |
24ac23ab | 1508 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1509 | if (!IS_ERR(state)) |
643168c2 | 1510 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1511 | out_free: |
c6d00e63 | 1512 | nfs4_opendata_put(data); |
24ac23ab TM |
1513 | } |
1514 | ||
1515 | static const struct rpc_call_ops nfs4_open_ops = { | |
1516 | .rpc_call_prepare = nfs4_open_prepare, | |
1517 | .rpc_call_done = nfs4_open_done, | |
1518 | .rpc_release = nfs4_open_release, | |
1519 | }; | |
1520 | ||
b257957e AB |
1521 | static const struct rpc_call_ops nfs4_recover_open_ops = { |
1522 | .rpc_call_prepare = nfs4_recover_open_prepare, | |
1523 | .rpc_call_done = nfs4_open_done, | |
1524 | .rpc_release = nfs4_open_release, | |
1525 | }; | |
1526 | ||
1527 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) | |
24ac23ab TM |
1528 | { |
1529 | struct inode *dir = data->dir->d_inode; | |
1530 | struct nfs_server *server = NFS_SERVER(dir); | |
1531 | struct nfs_openargs *o_arg = &data->o_arg; | |
1532 | struct nfs_openres *o_res = &data->o_res; | |
1533 | struct rpc_task *task; | |
5138fde0 TM |
1534 | struct rpc_message msg = { |
1535 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1536 | .rpc_argp = o_arg, | |
1537 | .rpc_resp = o_res, | |
1538 | .rpc_cred = data->owner->so_cred, | |
1539 | }; | |
c970aa85 TM |
1540 | struct rpc_task_setup task_setup_data = { |
1541 | .rpc_client = server->client, | |
5138fde0 | 1542 | .rpc_message = &msg, |
c970aa85 TM |
1543 | .callback_ops = &nfs4_open_ops, |
1544 | .callback_data = data, | |
101070ca | 1545 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1546 | .flags = RPC_TASK_ASYNC, |
1547 | }; | |
24ac23ab TM |
1548 | int status; |
1549 | ||
c6d00e63 | 1550 | kref_get(&data->kref); |
3e309914 TM |
1551 | data->rpc_done = 0; |
1552 | data->rpc_status = 0; | |
2ced46c2 | 1553 | data->cancelled = 0; |
b257957e AB |
1554 | if (isrecover) |
1555 | task_setup_data.callback_ops = &nfs4_recover_open_ops; | |
c970aa85 | 1556 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1557 | if (IS_ERR(task)) |
1558 | return PTR_ERR(task); | |
1559 | status = nfs4_wait_for_completion_rpc_task(task); | |
1560 | if (status != 0) { | |
1561 | data->cancelled = 1; | |
1562 | smp_wmb(); | |
1563 | } else | |
1564 | status = data->rpc_status; | |
1565 | rpc_put_task(task); | |
1566 | ||
1567 | return status; | |
1568 | } | |
1569 | ||
1570 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1571 | { | |
1572 | struct inode *dir = data->dir->d_inode; | |
1573 | struct nfs_openres *o_res = &data->o_res; | |
1574 | int status; | |
1575 | ||
1576 | status = nfs4_run_open_task(data, 1); | |
1577 | if (status != 0 || !data->rpc_done) | |
1578 | return status; | |
1579 | ||
1580 | nfs_refresh_inode(dir, o_res->dir_attr); | |
1581 | ||
1582 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { | |
1583 | status = _nfs4_proc_open_confirm(data); | |
1584 | if (status != 0) | |
1585 | return status; | |
1586 | } | |
1587 | ||
1588 | return status; | |
1589 | } | |
1590 | ||
1591 | /* | |
1592 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1593 | */ | |
1594 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1595 | { | |
1596 | struct inode *dir = data->dir->d_inode; | |
1597 | struct nfs_server *server = NFS_SERVER(dir); | |
1598 | struct nfs_openargs *o_arg = &data->o_arg; | |
1599 | struct nfs_openres *o_res = &data->o_res; | |
1600 | int status; | |
1601 | ||
1602 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
1603 | if (!data->rpc_done) |
1604 | return status; | |
1605 | if (status != 0) { | |
1606 | if (status == -NFS4ERR_BADNAME && | |
1607 | !(o_arg->open_flags & O_CREAT)) | |
1608 | return -ENOENT; | |
24ac23ab | 1609 | return status; |
08ef7bd3 | 1610 | } |
24ac23ab | 1611 | |
56ae19f3 TM |
1612 | if (o_arg->open_flags & O_CREAT) { |
1613 | update_changeattr(dir, &o_res->cinfo); | |
1614 | nfs_post_op_update_inode(dir, o_res->dir_attr); | |
1615 | } else | |
1616 | nfs_refresh_inode(dir, o_res->dir_attr); | |
0df5dd4a TM |
1617 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1618 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1619 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1620 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1621 | if (status != 0) |
24ac23ab | 1622 | return status; |
1da177e4 LT |
1623 | } |
1624 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1625 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1626 | return 0; |
1da177e4 LT |
1627 | } |
1628 | ||
d83217c1 | 1629 | static int nfs4_client_recover_expired_lease(struct nfs_client *clp) |
58d9714a | 1630 | { |
a78cb57a | 1631 | unsigned int loop; |
6b30954e | 1632 | int ret; |
58d9714a | 1633 | |
a78cb57a | 1634 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { |
65de872e | 1635 | ret = nfs4_wait_clnt_recover(clp); |
6b30954e | 1636 | if (ret != 0) |
a78cb57a | 1637 | break; |
e598d843 TM |
1638 | if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) && |
1639 | !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state)) | |
6b30954e | 1640 | break; |
0400a6b0 | 1641 | nfs4_schedule_state_manager(clp); |
a78cb57a | 1642 | ret = -EIO; |
6b30954e | 1643 | } |
a78cb57a | 1644 | return ret; |
58d9714a TM |
1645 | } |
1646 | ||
d83217c1 AA |
1647 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1648 | { | |
1649 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1650 | } | |
1651 | ||
1da177e4 LT |
1652 | /* |
1653 | * OPEN_EXPIRED: | |
1654 | * reclaim state on the server after a network partition. | |
1655 | * Assumes caller holds the appropriate lock | |
1656 | */ | |
539cd03a | 1657 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1658 | { |
e56e0b78 | 1659 | struct nfs4_opendata *opendata; |
864472e9 | 1660 | int ret; |
1da177e4 | 1661 | |
6f220ed5 TM |
1662 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1663 | if (IS_ERR(opendata)) | |
1664 | return PTR_ERR(opendata); | |
864472e9 | 1665 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1666 | if (ret == -ESTALE) |
3d4ff43d | 1667 | d_drop(ctx->dentry); |
c6d00e63 | 1668 | nfs4_opendata_put(opendata); |
864472e9 | 1669 | return ret; |
1da177e4 LT |
1670 | } |
1671 | ||
a9ed2e25 | 1672 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1673 | { |
539cd03a | 1674 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1675 | struct nfs4_exception exception = { }; |
1676 | int err; | |
1677 | ||
1678 | do { | |
539cd03a | 1679 | err = _nfs4_open_expired(ctx, state); |
a9ed2e25 TM |
1680 | switch (err) { |
1681 | default: | |
1682 | goto out; | |
1683 | case -NFS4ERR_GRACE: | |
1684 | case -NFS4ERR_DELAY: | |
1685 | nfs4_handle_exception(server, err, &exception); | |
1686 | err = 0; | |
1687 | } | |
202b50dc | 1688 | } while (exception.retry); |
a9ed2e25 | 1689 | out: |
202b50dc TM |
1690 | return err; |
1691 | } | |
1692 | ||
1da177e4 LT |
1693 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1694 | { | |
1da177e4 | 1695 | struct nfs_open_context *ctx; |
864472e9 | 1696 | int ret; |
1da177e4 | 1697 | |
864472e9 TM |
1698 | ctx = nfs4_state_find_open_context(state); |
1699 | if (IS_ERR(ctx)) | |
1700 | return PTR_ERR(ctx); | |
539cd03a | 1701 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1702 | put_nfs_open_context(ctx); |
1703 | return ret; | |
1da177e4 LT |
1704 | } |
1705 | ||
f062eb6c BS |
1706 | #if defined(CONFIG_NFS_V4_1) |
1707 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
1708 | { | |
1709 | int status; | |
1710 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1711 | ||
1712 | status = nfs41_test_stateid(server, state); | |
1713 | if (status == NFS_OK) | |
1714 | return 0; | |
1715 | nfs41_free_stateid(server, state); | |
1716 | return nfs4_open_expired(sp, state); | |
1717 | } | |
1718 | #endif | |
1719 | ||
aa53ed54 JL |
1720 | /* |
1721 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1722 | * fields corresponding to attributes that were used to store the verifier. | |
1723 | * Make sure we clobber those fields in the later setattr call | |
1724 | */ | |
1725 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1726 | { | |
1727 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1728 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1729 | sattr->ia_valid |= ATTR_ATIME; | |
1730 | ||
1731 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1732 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1733 | sattr->ia_valid |= ATTR_MTIME; | |
1734 | } | |
1735 | ||
1da177e4 | 1736 | /* |
24ac23ab | 1737 | * Returns a referenced nfs4_state |
1da177e4 | 1738 | */ |
82a2c1b7 | 1739 | 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 |
1740 | { |
1741 | struct nfs4_state_owner *sp; | |
1742 | struct nfs4_state *state = NULL; | |
1743 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1744 | struct nfs4_opendata *opendata; |
aac00a8d | 1745 | int status; |
1da177e4 LT |
1746 | |
1747 | /* Protect against reboot recovery conflicts */ | |
1da177e4 LT |
1748 | status = -ENOMEM; |
1749 | if (!(sp = nfs4_get_state_owner(server, cred))) { | |
1750 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); | |
1751 | goto out_err; | |
1752 | } | |
58d9714a TM |
1753 | status = nfs4_recover_expired_lease(server); |
1754 | if (status != 0) | |
b4454fe1 | 1755 | goto err_put_state_owner; |
82a2c1b7 AV |
1756 | if (dentry->d_inode != NULL) |
1757 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 1758 | status = -ENOMEM; |
82a2c1b7 | 1759 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, GFP_KERNEL); |
e56e0b78 | 1760 | if (opendata == NULL) |
95d35cb4 | 1761 | goto err_put_state_owner; |
1da177e4 | 1762 | |
82a2c1b7 AV |
1763 | if (dentry->d_inode != NULL) |
1764 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 1765 | |
24ac23ab | 1766 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1767 | if (status != 0) |
c6d00e63 | 1768 | goto err_opendata_put; |
1da177e4 | 1769 | |
24ac23ab | 1770 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1771 | status = PTR_ERR(state); |
1772 | if (IS_ERR(state)) | |
c6d00e63 | 1773 | goto err_opendata_put; |
0df5dd4a | 1774 | if (server->caps & NFS_CAP_POSIX_LOCK) |
8e469ebd | 1775 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); |
0ab64e0e TM |
1776 | |
1777 | if (opendata->o_arg.open_flags & O_EXCL) { | |
1778 | nfs4_exclusive_attrset(opendata, sattr); | |
1779 | ||
1780 | nfs_fattr_init(opendata->o_res.f_attr); | |
1781 | status = nfs4_do_setattr(state->inode, cred, | |
1782 | opendata->o_res.f_attr, sattr, | |
1783 | state); | |
1784 | if (status == 0) | |
1785 | nfs_setattr_update_inode(state->inode, sattr); | |
1786 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
1787 | } | |
c6d00e63 | 1788 | nfs4_opendata_put(opendata); |
1da177e4 | 1789 | nfs4_put_state_owner(sp); |
1da177e4 LT |
1790 | *res = state; |
1791 | return 0; | |
c6d00e63 TM |
1792 | err_opendata_put: |
1793 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
1794 | err_put_state_owner: |
1795 | nfs4_put_state_owner(sp); | |
1da177e4 | 1796 | out_err: |
1da177e4 LT |
1797 | *res = NULL; |
1798 | return status; | |
1799 | } | |
1800 | ||
1801 | ||
82a2c1b7 | 1802 | 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 |
1803 | { |
1804 | struct nfs4_exception exception = { }; | |
1805 | struct nfs4_state *res; | |
1806 | int status; | |
1807 | ||
1808 | do { | |
82a2c1b7 | 1809 | status = _nfs4_do_open(dir, dentry, fmode, flags, sattr, cred, &res); |
1da177e4 LT |
1810 | if (status == 0) |
1811 | break; | |
1812 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1813 | * book-keeping w.r.t. state-changing operations | |
1814 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1815 | * It is actually a sign of a bug on the client or on the server. | |
1816 | * | |
1817 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1818 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1819 | * have unhashed the old state_owner for us, and that we can |
1820 | * therefore safely retry using a new one. We should still warn | |
1821 | * the user though... | |
1822 | */ | |
1823 | if (status == -NFS4ERR_BAD_SEQID) { | |
6f43ddcc TM |
1824 | printk(KERN_WARNING "NFS: v4 server %s " |
1825 | " returned a bad sequence-id error!\n", | |
1826 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1827 | exception.retry = 1; |
1828 | continue; | |
1829 | } | |
550f5747 TM |
1830 | /* |
1831 | * BAD_STATEID on OPEN means that the server cancelled our | |
1832 | * state before it received the OPEN_CONFIRM. | |
1833 | * Recover by retrying the request as per the discussion | |
1834 | * on Page 181 of RFC3530. | |
1835 | */ | |
1836 | if (status == -NFS4ERR_BAD_STATEID) { | |
1837 | exception.retry = 1; | |
1838 | continue; | |
1839 | } | |
aac00a8d TM |
1840 | if (status == -EAGAIN) { |
1841 | /* We must have found a delegation */ | |
1842 | exception.retry = 1; | |
1843 | continue; | |
1844 | } | |
1da177e4 LT |
1845 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1846 | status, &exception)); | |
1847 | } while (exception.retry); | |
1848 | return res; | |
1849 | } | |
1850 | ||
659bfcd6 TM |
1851 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1852 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1853 | struct nfs4_state *state) | |
1da177e4 | 1854 | { |
3e4f6290 | 1855 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1856 | struct nfs_setattrargs arg = { |
3e4f6290 | 1857 | .fh = NFS_FH(inode), |
1da177e4 LT |
1858 | .iap = sattr, |
1859 | .server = server, | |
1860 | .bitmask = server->attr_bitmask, | |
1861 | }; | |
1862 | struct nfs_setattrres res = { | |
1863 | .fattr = fattr, | |
1864 | .server = server, | |
1865 | }; | |
1866 | struct rpc_message msg = { | |
659bfcd6 TM |
1867 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
1868 | .rpc_argp = &arg, | |
1869 | .rpc_resp = &res, | |
1870 | .rpc_cred = cred, | |
1da177e4 | 1871 | }; |
26e976a8 | 1872 | unsigned long timestamp = jiffies; |
65e4308d | 1873 | int status; |
1da177e4 | 1874 | |
0e574af1 | 1875 | nfs_fattr_init(fattr); |
1da177e4 | 1876 | |
3e4f6290 TM |
1877 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) { |
1878 | /* Use that stateid */ | |
1879 | } else if (state != NULL) { | |
77041ed9 | 1880 | nfs4_copy_stateid(&arg.stateid, state, current->files, current->tgid); |
08e9eac4 | 1881 | } else |
1da177e4 LT |
1882 | memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid)); |
1883 | ||
7c513058 | 1884 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
1885 | if (status == 0 && state != NULL) |
1886 | renew_lease(server, timestamp); | |
65e4308d | 1887 | return status; |
1da177e4 LT |
1888 | } |
1889 | ||
659bfcd6 TM |
1890 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1891 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1892 | struct nfs4_state *state) | |
1da177e4 | 1893 | { |
3e4f6290 | 1894 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
1895 | struct nfs4_exception exception = { }; |
1896 | int err; | |
1897 | do { | |
1898 | err = nfs4_handle_exception(server, | |
659bfcd6 | 1899 | _nfs4_do_setattr(inode, cred, fattr, sattr, state), |
1da177e4 LT |
1900 | &exception); |
1901 | } while (exception.retry); | |
1902 | return err; | |
1903 | } | |
1904 | ||
1905 | struct nfs4_closedata { | |
1906 | struct inode *inode; | |
1907 | struct nfs4_state *state; | |
1908 | struct nfs_closeargs arg; | |
1909 | struct nfs_closeres res; | |
516a6af6 | 1910 | struct nfs_fattr fattr; |
26e976a8 | 1911 | unsigned long timestamp; |
f7e8917a FI |
1912 | bool roc; |
1913 | u32 roc_barrier; | |
1da177e4 LT |
1914 | }; |
1915 | ||
963d8fe5 | 1916 | static void nfs4_free_closedata(void *data) |
9512135d | 1917 | { |
963d8fe5 TM |
1918 | struct nfs4_closedata *calldata = data; |
1919 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 1920 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 1921 | |
f7e8917a FI |
1922 | if (calldata->roc) |
1923 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
1924 | nfs4_put_open_state(calldata->state); |
1925 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 1926 | nfs4_put_state_owner(sp); |
643168c2 | 1927 | nfs_sb_deactive(sb); |
9512135d TM |
1928 | kfree(calldata); |
1929 | } | |
1930 | ||
88069f77 TM |
1931 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
1932 | fmode_t fmode) | |
1933 | { | |
1934 | spin_lock(&state->owner->so_lock); | |
1935 | if (!(fmode & FMODE_READ)) | |
1936 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1937 | if (!(fmode & FMODE_WRITE)) | |
1938 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1939 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1940 | spin_unlock(&state->owner->so_lock); | |
1941 | } | |
1942 | ||
963d8fe5 | 1943 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 1944 | { |
963d8fe5 | 1945 | struct nfs4_closedata *calldata = data; |
1da177e4 | 1946 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
1947 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
1948 | ||
14516c3a TM |
1949 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
1950 | return; | |
1da177e4 LT |
1951 | /* hmm. we are done with the inode, and in the process of freeing |
1952 | * the state_owner. we keep this around to process errors | |
1953 | */ | |
1da177e4 LT |
1954 | switch (task->tk_status) { |
1955 | case 0: | |
f7e8917a FI |
1956 | if (calldata->roc) |
1957 | pnfs_roc_set_barrier(state->inode, | |
1958 | calldata->roc_barrier); | |
45328c35 | 1959 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 1960 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
1961 | nfs4_close_clear_stateid_flags(state, |
1962 | calldata->arg.fmode); | |
1da177e4 LT |
1963 | break; |
1964 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
1965 | case -NFS4ERR_OLD_STATEID: |
1966 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 1967 | case -NFS4ERR_EXPIRED: |
dc0b027d | 1968 | if (calldata->arg.fmode == 0) |
9e33bed5 | 1969 | break; |
1da177e4 | 1970 | default: |
72211dbe TM |
1971 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
1972 | rpc_restart_call_prepare(task); | |
1da177e4 | 1973 | } |
72211dbe | 1974 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 1975 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
1da177e4 LT |
1976 | } |
1977 | ||
4ce70ada | 1978 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 1979 | { |
4ce70ada | 1980 | struct nfs4_closedata *calldata = data; |
9512135d | 1981 | struct nfs4_state *state = calldata->state; |
88069f77 | 1982 | int call_close = 0; |
9512135d | 1983 | |
963d8fe5 | 1984 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 1985 | return; |
003707c7 | 1986 | |
88069f77 TM |
1987 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
1988 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 1989 | spin_lock(&state->owner->so_lock); |
003707c7 | 1990 | /* Calculate the change in open mode */ |
e7616923 | 1991 | if (state->n_rdwr == 0) { |
003707c7 | 1992 | if (state->n_rdonly == 0) { |
88069f77 TM |
1993 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
1994 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
1995 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
1996 | } |
1997 | if (state->n_wronly == 0) { | |
88069f77 TM |
1998 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
1999 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2000 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 2001 | } |
e7616923 | 2002 | } |
4cecb76f | 2003 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2004 | |
2005 | if (!call_close) { | |
963d8fe5 TM |
2006 | /* Note: exit _without_ calling nfs4_close_done */ |
2007 | task->tk_action = NULL; | |
9512135d TM |
2008 | return; |
2009 | } | |
88069f77 | 2010 | |
f7e8917a | 2011 | if (calldata->arg.fmode == 0) { |
88069f77 | 2012 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a FI |
2013 | if (calldata->roc && |
2014 | pnfs_roc_drain(calldata->inode, &calldata->roc_barrier)) { | |
2015 | rpc_sleep_on(&NFS_SERVER(calldata->inode)->roc_rpcwaitq, | |
2016 | task, NULL); | |
2017 | return; | |
2018 | } | |
2019 | } | |
88069f77 | 2020 | |
516a6af6 | 2021 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2022 | calldata->timestamp = jiffies; |
035168ab | 2023 | if (nfs4_setup_sequence(NFS_SERVER(calldata->inode), |
19ddab06 AA |
2024 | &calldata->arg.seq_args, &calldata->res.seq_res, |
2025 | 1, task)) | |
2026 | return; | |
5138fde0 | 2027 | rpc_call_start(task); |
1da177e4 LT |
2028 | } |
2029 | ||
963d8fe5 | 2030 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2031 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2032 | .rpc_call_done = nfs4_close_done, |
2033 | .rpc_release = nfs4_free_closedata, | |
2034 | }; | |
2035 | ||
1da177e4 LT |
2036 | /* |
2037 | * It is possible for data to be read/written from a mem-mapped file | |
2038 | * after the sys_close call (which hits the vfs layer as a flush). | |
2039 | * This means that we can't safely call nfsv4 close on a file until | |
2040 | * the inode is cleared. This in turn means that we are not good | |
2041 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2042 | * share state even when we are done with one of the three share | |
2043 | * stateid's in the inode. | |
2044 | * | |
2045 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2046 | */ | |
643168c2 | 2047 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait, bool roc) |
1da177e4 | 2048 | { |
4a35bd41 | 2049 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2050 | struct nfs4_closedata *calldata; |
b39e625b TM |
2051 | struct nfs4_state_owner *sp = state->owner; |
2052 | struct rpc_task *task; | |
5138fde0 TM |
2053 | struct rpc_message msg = { |
2054 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2055 | .rpc_cred = state->owner->so_cred, | |
2056 | }; | |
c970aa85 TM |
2057 | struct rpc_task_setup task_setup_data = { |
2058 | .rpc_client = server->client, | |
5138fde0 | 2059 | .rpc_message = &msg, |
c970aa85 | 2060 | .callback_ops = &nfs4_close_ops, |
101070ca | 2061 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2062 | .flags = RPC_TASK_ASYNC, |
2063 | }; | |
9512135d | 2064 | int status = -ENOMEM; |
1da177e4 | 2065 | |
8535b2be | 2066 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2067 | if (calldata == NULL) |
9512135d | 2068 | goto out; |
4a35bd41 | 2069 | calldata->inode = state->inode; |
1da177e4 | 2070 | calldata->state = state; |
4a35bd41 | 2071 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2072 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2073 | /* Serialization for the sequence id */ |
8535b2be | 2074 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2075 | if (calldata->arg.seqid == NULL) |
2076 | goto out_free_calldata; | |
dc0b027d | 2077 | calldata->arg.fmode = 0; |
a65318bf | 2078 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2079 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2080 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2081 | calldata->res.server = server; |
f7e8917a | 2082 | calldata->roc = roc; |
643168c2 | 2083 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2084 | |
1174dd1f TM |
2085 | msg.rpc_argp = &calldata->arg; |
2086 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2087 | task_setup_data.callback_data = calldata; |
2088 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2089 | if (IS_ERR(task)) |
2090 | return PTR_ERR(task); | |
a49c3c77 TM |
2091 | status = 0; |
2092 | if (wait) | |
2093 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2094 | rpc_put_task(task); |
a49c3c77 | 2095 | return status; |
9512135d TM |
2096 | out_free_calldata: |
2097 | kfree(calldata); | |
2098 | out: | |
f7e8917a FI |
2099 | if (roc) |
2100 | pnfs_roc_release(state->inode); | |
b39e625b TM |
2101 | nfs4_put_open_state(state); |
2102 | nfs4_put_state_owner(sp); | |
9512135d | 2103 | return status; |
1da177e4 LT |
2104 | } |
2105 | ||
2b484297 | 2106 | static struct inode * |
cd9a1c0e | 2107 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2108 | { |
1da177e4 | 2109 | struct nfs4_state *state; |
1da177e4 | 2110 | |
565277f6 | 2111 | /* Protect against concurrent sillydeletes */ |
3d4ff43d | 2112 | state = nfs4_do_open(dir, ctx->dentry, ctx->mode, open_flags, attr, ctx->cred); |
f46e0bd3 TM |
2113 | if (IS_ERR(state)) |
2114 | return ERR_CAST(state); | |
cd9a1c0e | 2115 | ctx->state = state; |
f46e0bd3 | 2116 | return igrab(state->inode); |
1da177e4 LT |
2117 | } |
2118 | ||
1185a552 | 2119 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2120 | { |
2121 | if (ctx->state == NULL) | |
2122 | return; | |
2123 | if (is_sync) | |
643168c2 | 2124 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2125 | else |
643168c2 | 2126 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2127 | } |
1da177e4 LT |
2128 | |
2129 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2130 | { | |
43652ad5 BH |
2131 | struct nfs4_server_caps_arg args = { |
2132 | .fhandle = fhandle, | |
2133 | }; | |
1da177e4 LT |
2134 | struct nfs4_server_caps_res res = {}; |
2135 | struct rpc_message msg = { | |
2136 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2137 | .rpc_argp = &args, |
1da177e4 LT |
2138 | .rpc_resp = &res, |
2139 | }; | |
2140 | int status; | |
2141 | ||
7c513058 | 2142 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2143 | if (status == 0) { |
2144 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2145 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2146 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2147 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2148 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2149 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2150 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2151 | server->caps |= NFS_CAP_ACLS; | |
2152 | if (res.has_links != 0) | |
2153 | server->caps |= NFS_CAP_HARDLINKS; | |
2154 | if (res.has_symlinks != 0) | |
2155 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2156 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2157 | server->caps |= NFS_CAP_FILEID; | |
2158 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2159 | server->caps |= NFS_CAP_MODE; | |
2160 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2161 | server->caps |= NFS_CAP_NLINK; | |
2162 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2163 | server->caps |= NFS_CAP_OWNER; | |
2164 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2165 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2166 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2167 | server->caps |= NFS_CAP_ATIME; | |
2168 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2169 | server->caps |= NFS_CAP_CTIME; | |
2170 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2171 | server->caps |= NFS_CAP_MTIME; | |
2172 | ||
a65318bf TM |
2173 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2174 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2175 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 LT |
2176 | server->acl_bitmask = res.acl_bitmask; |
2177 | } | |
cccef3b9 | 2178 | |
1da177e4 LT |
2179 | return status; |
2180 | } | |
2181 | ||
55a97593 | 2182 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2183 | { |
2184 | struct nfs4_exception exception = { }; | |
2185 | int err; | |
2186 | do { | |
2187 | err = nfs4_handle_exception(server, | |
2188 | _nfs4_server_capabilities(server, fhandle), | |
2189 | &exception); | |
2190 | } while (exception.retry); | |
2191 | return err; | |
2192 | } | |
2193 | ||
2194 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2195 | struct nfs_fsinfo *info) | |
2196 | { | |
1da177e4 LT |
2197 | struct nfs4_lookup_root_arg args = { |
2198 | .bitmask = nfs4_fattr_bitmap, | |
2199 | }; | |
2200 | struct nfs4_lookup_res res = { | |
2201 | .server = server, | |
0e574af1 | 2202 | .fattr = info->fattr, |
1da177e4 LT |
2203 | .fh = fhandle, |
2204 | }; | |
2205 | struct rpc_message msg = { | |
2206 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2207 | .rpc_argp = &args, | |
2208 | .rpc_resp = &res, | |
2209 | }; | |
008f55d0 | 2210 | |
0e574af1 | 2211 | nfs_fattr_init(info->fattr); |
7c513058 | 2212 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2213 | } |
2214 | ||
2215 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2216 | struct nfs_fsinfo *info) | |
2217 | { | |
2218 | struct nfs4_exception exception = { }; | |
2219 | int err; | |
2220 | do { | |
fb8a5ba8 BS |
2221 | err = _nfs4_lookup_root(server, fhandle, info); |
2222 | switch (err) { | |
2223 | case 0: | |
2224 | case -NFS4ERR_WRONGSEC: | |
2225 | break; | |
2226 | default: | |
2227 | err = nfs4_handle_exception(server, err, &exception); | |
2228 | } | |
1da177e4 LT |
2229 | } while (exception.retry); |
2230 | return err; | |
2231 | } | |
2232 | ||
8f70e95f BS |
2233 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2234 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2235 | { | |
2236 | struct rpc_auth *auth; | |
2237 | int ret; | |
2238 | ||
2239 | auth = rpcauth_create(flavor, server->client); | |
2240 | if (!auth) { | |
2241 | ret = -EIO; | |
2242 | goto out; | |
2243 | } | |
2244 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2245 | out: |
2246 | return ret; | |
2247 | } | |
2248 | ||
801a16dc | 2249 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2250 | struct nfs_fsinfo *info) |
1da177e4 | 2251 | { |
8f70e95f | 2252 | int i, len, status = 0; |
0fabee24 | 2253 | rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS]; |
1da177e4 | 2254 | |
801a16dc BS |
2255 | len = gss_mech_list_pseudoflavors(&flav_array[0]); |
2256 | flav_array[len] = RPC_AUTH_NULL; | |
2257 | len += 1; | |
8f70e95f BS |
2258 | |
2259 | for (i = 0; i < len; i++) { | |
2260 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); | |
fb8a5ba8 | 2261 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2262 | continue; |
2263 | break; | |
8f70e95f | 2264 | } |
fb8a5ba8 BS |
2265 | /* |
2266 | * -EACCESS could mean that the user doesn't have correct permissions | |
2267 | * to access the mount. It could also mean that we tried to mount | |
2268 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2269 | * existing mount programs don't handle -EACCES very well so it should | |
2270 | * be mapped to -EPERM instead. | |
2271 | */ | |
2272 | if (status == -EACCES) | |
2273 | status = -EPERM; | |
801a16dc BS |
2274 | return status; |
2275 | } | |
2276 | ||
2277 | /* | |
2278 | * get the file handle for the "/" directory on the server | |
2279 | */ | |
2280 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2281 | struct nfs_fsinfo *info) | |
2282 | { | |
fca78d6d | 2283 | int minor_version = server->nfs_client->cl_minorversion; |
801a16dc | 2284 | int status = nfs4_lookup_root(server, fhandle, info); |
fb8a5ba8 BS |
2285 | if ((status == -NFS4ERR_WRONGSEC) && !(server->flags & NFS_MOUNT_SECFLAVOUR)) |
2286 | /* | |
2287 | * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM | |
2288 | * by nfs4_map_errors() as this function exits. | |
2289 | */ | |
fca78d6d | 2290 | status = nfs_v4_minor_ops[minor_version]->find_root_sec(server, fhandle, info); |
1da177e4 LT |
2291 | if (status == 0) |
2292 | status = nfs4_server_capabilities(server, fhandle); | |
2293 | if (status == 0) | |
2294 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2295 | return nfs4_map_errors(status); |
1da177e4 LT |
2296 | } |
2297 | ||
533eb461 | 2298 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); |
6b97fd3d MN |
2299 | /* |
2300 | * Get locations and (maybe) other attributes of a referral. | |
2301 | * Note that we'll actually follow the referral later when | |
2302 | * we detect fsid mismatch in inode revalidation | |
2303 | */ | |
533eb461 AA |
2304 | static int nfs4_get_referral(struct inode *dir, const struct qstr *name, |
2305 | struct nfs_fattr *fattr, struct nfs_fh *fhandle) | |
6b97fd3d MN |
2306 | { |
2307 | int status = -ENOMEM; | |
2308 | struct page *page = NULL; | |
2309 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2310 | |
2311 | page = alloc_page(GFP_KERNEL); | |
2312 | if (page == NULL) | |
2313 | goto out; | |
2314 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2315 | if (locations == NULL) | |
2316 | goto out; | |
2317 | ||
c228fd3a | 2318 | status = nfs4_proc_fs_locations(dir, name, locations, page); |
6b97fd3d MN |
2319 | if (status != 0) |
2320 | goto out; | |
2321 | /* Make sure server returned a different fsid for the referral */ | |
2322 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2323 | dprintk("%s: server did not return a different fsid for" |
2324 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2325 | status = -EIO; |
2326 | goto out; | |
2327 | } | |
533eb461 AA |
2328 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2329 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2330 | |
533eb461 | 2331 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2332 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2333 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2334 | out: | |
2335 | if (page) | |
2336 | __free_page(page); | |
5d7ca35a | 2337 | kfree(locations); |
6b97fd3d MN |
2338 | return status; |
2339 | } | |
2340 | ||
1da177e4 LT |
2341 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2342 | { | |
2343 | struct nfs4_getattr_arg args = { | |
2344 | .fh = fhandle, | |
2345 | .bitmask = server->attr_bitmask, | |
2346 | }; | |
2347 | struct nfs4_getattr_res res = { | |
2348 | .fattr = fattr, | |
2349 | .server = server, | |
2350 | }; | |
2351 | struct rpc_message msg = { | |
2352 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2353 | .rpc_argp = &args, | |
2354 | .rpc_resp = &res, | |
2355 | }; | |
2356 | ||
0e574af1 | 2357 | nfs_fattr_init(fattr); |
7c513058 | 2358 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2359 | } |
2360 | ||
2361 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2362 | { | |
2363 | struct nfs4_exception exception = { }; | |
2364 | int err; | |
2365 | do { | |
2366 | err = nfs4_handle_exception(server, | |
2367 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2368 | &exception); | |
2369 | } while (exception.retry); | |
2370 | return err; | |
2371 | } | |
2372 | ||
2373 | /* | |
2374 | * The file is not closed if it is opened due to the a request to change | |
2375 | * the size of the file. The open call will not be needed once the | |
2376 | * VFS layer lookup-intents are implemented. | |
2377 | * | |
2378 | * Close is called when the inode is destroyed. | |
2379 | * If we haven't opened the file for O_WRONLY, we | |
2380 | * need to in the size_change case to obtain a stateid. | |
2381 | * | |
2382 | * Got race? | |
2383 | * Because OPEN is always done by name in nfsv4, it is | |
2384 | * possible that we opened a different file by the same | |
2385 | * name. We can recognize this race condition, but we | |
2386 | * can't do anything about it besides returning an error. | |
2387 | * | |
2388 | * This will be fixed with VFS changes (lookup-intent). | |
2389 | */ | |
2390 | static int | |
2391 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2392 | struct iattr *sattr) | |
2393 | { | |
08e9eac4 | 2394 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2395 | struct rpc_cred *cred = NULL; |
d530838b | 2396 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2397 | int status; |
2398 | ||
8a1636c4 BH |
2399 | if (pnfs_ld_layoutret_on_setattr(inode)) |
2400 | pnfs_return_layout(inode); | |
2401 | ||
0e574af1 | 2402 | nfs_fattr_init(fattr); |
1da177e4 | 2403 | |
d530838b | 2404 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2405 | if (sattr->ia_valid & ATTR_FILE) { |
2406 | struct nfs_open_context *ctx; | |
2407 | ||
2408 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2409 | if (ctx) { |
2410 | cred = ctx->cred; | |
2411 | state = ctx->state; | |
2412 | } | |
659bfcd6 | 2413 | } |
08e9eac4 | 2414 | |
659bfcd6 | 2415 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2416 | if (status == 0) |
2417 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2418 | return status; |
2419 | } | |
2420 | ||
0c2e53f1 TM |
2421 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
2422 | const struct qstr *name, struct nfs_fh *fhandle, | |
2423 | struct nfs_fattr *fattr) | |
2b3de441 | 2424 | { |
0c2e53f1 | 2425 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
2426 | int status; |
2427 | struct nfs4_lookup_arg args = { | |
2428 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 2429 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
2430 | .name = name, |
2431 | }; | |
2432 | struct nfs4_lookup_res res = { | |
2433 | .server = server, | |
2434 | .fattr = fattr, | |
2435 | .fh = fhandle, | |
2436 | }; | |
2437 | struct rpc_message msg = { | |
2438 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2439 | .rpc_argp = &args, | |
2440 | .rpc_resp = &res, | |
2441 | }; | |
2442 | ||
2443 | nfs_fattr_init(fattr); | |
2444 | ||
1da177e4 | 2445 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 2446 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2447 | dprintk("NFS reply lookup: %d\n", status); |
2448 | return status; | |
2449 | } | |
2450 | ||
7ebb9315 BS |
2451 | void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr, struct nfs_fh *fh) |
2452 | { | |
2453 | memset(fh, 0, sizeof(struct nfs_fh)); | |
2454 | fattr->fsid.major = 1; | |
2455 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
2456 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_FSID | NFS_ATTR_FATTR_MOUNTPOINT; | |
2457 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; | |
2458 | fattr->nlink = 2; | |
2459 | } | |
2460 | ||
7c513058 BS |
2461 | static int nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, struct qstr *name, |
2462 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
1da177e4 LT |
2463 | { |
2464 | struct nfs4_exception exception = { }; | |
2465 | int err; | |
2466 | do { | |
0c2e53f1 TM |
2467 | int status; |
2468 | ||
2469 | status = _nfs4_proc_lookup(clnt, dir, name, fhandle, fattr); | |
2470 | switch (status) { | |
08ef7bd3 TM |
2471 | case -NFS4ERR_BADNAME: |
2472 | return -ENOENT; | |
0c2e53f1 | 2473 | case -NFS4ERR_MOVED: |
a6f498a8 | 2474 | return nfs4_get_referral(dir, name, fattr, fhandle); |
0c2e53f1 | 2475 | case -NFS4ERR_WRONGSEC: |
7ebb9315 | 2476 | nfs_fixup_secinfo_attributes(fattr, fhandle); |
0c2e53f1 TM |
2477 | } |
2478 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2479 | status, &exception); | |
1da177e4 LT |
2480 | } while (exception.retry); |
2481 | return err; | |
2482 | } | |
2483 | ||
2484 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2485 | { | |
76b32999 | 2486 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2487 | struct nfs4_accessargs args = { |
2488 | .fh = NFS_FH(inode), | |
76b32999 TM |
2489 | .bitmask = server->attr_bitmask, |
2490 | }; | |
2491 | struct nfs4_accessres res = { | |
2492 | .server = server, | |
1da177e4 | 2493 | }; |
1da177e4 LT |
2494 | struct rpc_message msg = { |
2495 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2496 | .rpc_argp = &args, | |
2497 | .rpc_resp = &res, | |
2498 | .rpc_cred = entry->cred, | |
2499 | }; | |
2500 | int mode = entry->mask; | |
2501 | int status; | |
2502 | ||
2503 | /* | |
2504 | * Determine which access bits we want to ask for... | |
2505 | */ | |
2506 | if (mode & MAY_READ) | |
2507 | args.access |= NFS4_ACCESS_READ; | |
2508 | if (S_ISDIR(inode->i_mode)) { | |
2509 | if (mode & MAY_WRITE) | |
2510 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2511 | if (mode & MAY_EXEC) | |
2512 | args.access |= NFS4_ACCESS_LOOKUP; | |
2513 | } else { | |
2514 | if (mode & MAY_WRITE) | |
2515 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2516 | if (mode & MAY_EXEC) | |
2517 | args.access |= NFS4_ACCESS_EXECUTE; | |
2518 | } | |
c407d41a TM |
2519 | |
2520 | res.fattr = nfs_alloc_fattr(); | |
2521 | if (res.fattr == NULL) | |
2522 | return -ENOMEM; | |
2523 | ||
7c513058 | 2524 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2525 | if (!status) { |
2526 | entry->mask = 0; | |
2527 | if (res.access & NFS4_ACCESS_READ) | |
2528 | entry->mask |= MAY_READ; | |
2529 | if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE)) | |
2530 | entry->mask |= MAY_WRITE; | |
2531 | if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE)) | |
2532 | entry->mask |= MAY_EXEC; | |
c407d41a | 2533 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2534 | } |
c407d41a | 2535 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2536 | return status; |
2537 | } | |
2538 | ||
2539 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2540 | { | |
2541 | struct nfs4_exception exception = { }; | |
2542 | int err; | |
2543 | do { | |
2544 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2545 | _nfs4_proc_access(inode, entry), | |
2546 | &exception); | |
2547 | } while (exception.retry); | |
2548 | return err; | |
2549 | } | |
2550 | ||
2551 | /* | |
2552 | * TODO: For the time being, we don't try to get any attributes | |
2553 | * along with any of the zero-copy operations READ, READDIR, | |
2554 | * READLINK, WRITE. | |
2555 | * | |
2556 | * In the case of the first three, we want to put the GETATTR | |
2557 | * after the read-type operation -- this is because it is hard | |
2558 | * to predict the length of a GETATTR response in v4, and thus | |
2559 | * align the READ data correctly. This means that the GETATTR | |
2560 | * may end up partially falling into the page cache, and we should | |
2561 | * shift it into the 'tail' of the xdr_buf before processing. | |
2562 | * To do this efficiently, we need to know the total length | |
2563 | * of data received, which doesn't seem to be available outside | |
2564 | * of the RPC layer. | |
2565 | * | |
2566 | * In the case of WRITE, we also want to put the GETATTR after | |
2567 | * the operation -- in this case because we want to make sure | |
2568 | * we get the post-operation mtime and size. This means that | |
2569 | * we can't use xdr_encode_pages() as written: we need a variant | |
2570 | * of it which would leave room in the 'tail' iovec. | |
2571 | * | |
2572 | * Both of these changes to the XDR layer would in fact be quite | |
2573 | * minor, but I decided to leave them for a subsequent patch. | |
2574 | */ | |
2575 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2576 | unsigned int pgbase, unsigned int pglen) | |
2577 | { | |
2578 | struct nfs4_readlink args = { | |
2579 | .fh = NFS_FH(inode), | |
2580 | .pgbase = pgbase, | |
2581 | .pglen = pglen, | |
2582 | .pages = &page, | |
2583 | }; | |
f50c7000 | 2584 | struct nfs4_readlink_res res; |
1da177e4 LT |
2585 | struct rpc_message msg = { |
2586 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2587 | .rpc_argp = &args, | |
f50c7000 | 2588 | .rpc_resp = &res, |
1da177e4 LT |
2589 | }; |
2590 | ||
7c513058 | 2591 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2592 | } |
2593 | ||
2594 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2595 | unsigned int pgbase, unsigned int pglen) | |
2596 | { | |
2597 | struct nfs4_exception exception = { }; | |
2598 | int err; | |
2599 | do { | |
2600 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2601 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2602 | &exception); | |
2603 | } while (exception.retry); | |
2604 | return err; | |
2605 | } | |
2606 | ||
1da177e4 LT |
2607 | /* |
2608 | * Got race? | |
2609 | * We will need to arrange for the VFS layer to provide an atomic open. | |
2610 | * Until then, this create/open method is prone to inefficiency and race | |
2611 | * conditions due to the lookup, create, and open VFS calls from sys_open() | |
2612 | * placed on the wire. | |
2613 | * | |
2614 | * Given the above sorry state of affairs, I'm simply sending an OPEN. | |
2615 | * The file will be opened again in the subsequent VFS open call | |
2616 | * (nfs4_proc_file_open). | |
2617 | * | |
2618 | * The open for read will just hang around to be used by any process that | |
2619 | * opens the file O_RDONLY. This will all be resolved with the VFS changes. | |
2620 | */ | |
2621 | ||
2622 | static int | |
2623 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
c0204fd2 | 2624 | int flags, struct nfs_open_context *ctx) |
1da177e4 | 2625 | { |
82a2c1b7 | 2626 | struct dentry *de = dentry; |
1da177e4 | 2627 | struct nfs4_state *state; |
c0204fd2 TM |
2628 | struct rpc_cred *cred = NULL; |
2629 | fmode_t fmode = 0; | |
1da177e4 LT |
2630 | int status = 0; |
2631 | ||
c0204fd2 TM |
2632 | if (ctx != NULL) { |
2633 | cred = ctx->cred; | |
3d4ff43d | 2634 | de = ctx->dentry; |
c0204fd2 | 2635 | fmode = ctx->mode; |
1da177e4 | 2636 | } |
a8a5da99 | 2637 | sattr->ia_mode &= ~current_umask(); |
82a2c1b7 | 2638 | state = nfs4_do_open(dir, de, fmode, flags, sattr, cred); |
d4d9cdcb | 2639 | d_drop(dentry); |
1da177e4 LT |
2640 | if (IS_ERR(state)) { |
2641 | status = PTR_ERR(state); | |
c0204fd2 | 2642 | goto out; |
1da177e4 | 2643 | } |
d4d9cdcb | 2644 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2645 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
c0204fd2 TM |
2646 | if (ctx != NULL) |
2647 | ctx->state = state; | |
02a913a7 | 2648 | else |
643168c2 | 2649 | nfs4_close_sync(state, fmode); |
1da177e4 LT |
2650 | out: |
2651 | return status; | |
2652 | } | |
2653 | ||
2654 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2655 | { | |
16e42959 | 2656 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2657 | struct nfs_removeargs args = { |
1da177e4 | 2658 | .fh = NFS_FH(dir), |
4fdc17b2 TM |
2659 | .name.len = name->len, |
2660 | .name.name = name->name, | |
16e42959 TM |
2661 | .bitmask = server->attr_bitmask, |
2662 | }; | |
4fdc17b2 | 2663 | struct nfs_removeres res = { |
16e42959 | 2664 | .server = server, |
1da177e4 | 2665 | }; |
1da177e4 | 2666 | struct rpc_message msg = { |
4fdc17b2 TM |
2667 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
2668 | .rpc_argp = &args, | |
2669 | .rpc_resp = &res, | |
1da177e4 | 2670 | }; |
d346890b TM |
2671 | int status = -ENOMEM; |
2672 | ||
2673 | res.dir_attr = nfs_alloc_fattr(); | |
2674 | if (res.dir_attr == NULL) | |
2675 | goto out; | |
1da177e4 | 2676 | |
7c513058 | 2677 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
16e42959 TM |
2678 | if (status == 0) { |
2679 | update_changeattr(dir, &res.cinfo); | |
d346890b | 2680 | nfs_post_op_update_inode(dir, res.dir_attr); |
16e42959 | 2681 | } |
d346890b TM |
2682 | nfs_free_fattr(res.dir_attr); |
2683 | out: | |
1da177e4 LT |
2684 | return status; |
2685 | } | |
2686 | ||
2687 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2688 | { | |
2689 | struct nfs4_exception exception = { }; | |
2690 | int err; | |
2691 | do { | |
2692 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2693 | _nfs4_proc_remove(dir, name), | |
2694 | &exception); | |
2695 | } while (exception.retry); | |
2696 | return err; | |
2697 | } | |
2698 | ||
e4eff1a6 | 2699 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 2700 | { |
e4eff1a6 TM |
2701 | struct nfs_server *server = NFS_SERVER(dir); |
2702 | struct nfs_removeargs *args = msg->rpc_argp; | |
2703 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 2704 | |
a65318bf | 2705 | args->bitmask = server->cache_consistency_bitmask; |
e4eff1a6 | 2706 | res->server = server; |
dfb4f309 | 2707 | res->seq_res.sr_slot = NULL; |
1da177e4 | 2708 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
1da177e4 LT |
2709 | } |
2710 | ||
e4eff1a6 | 2711 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 2712 | { |
e4eff1a6 TM |
2713 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
2714 | ||
14516c3a TM |
2715 | if (!nfs4_sequence_done(task, &res->seq_res)) |
2716 | return 0; | |
9e33bed5 | 2717 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
2718 | return 0; |
2719 | update_changeattr(dir, &res->cinfo); | |
d346890b | 2720 | nfs_post_op_update_inode(dir, res->dir_attr); |
e4eff1a6 | 2721 | return 1; |
1da177e4 LT |
2722 | } |
2723 | ||
d3d4152a JL |
2724 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
2725 | { | |
2726 | struct nfs_server *server = NFS_SERVER(dir); | |
2727 | struct nfs_renameargs *arg = msg->rpc_argp; | |
2728 | struct nfs_renameres *res = msg->rpc_resp; | |
2729 | ||
2730 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
2731 | arg->bitmask = server->attr_bitmask; | |
2732 | res->server = server; | |
2733 | } | |
2734 | ||
2735 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
2736 | struct inode *new_dir) | |
2737 | { | |
2738 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
2739 | ||
2740 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
2741 | return 0; | |
2742 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
2743 | return 0; | |
2744 | ||
2745 | update_changeattr(old_dir, &res->old_cinfo); | |
2746 | nfs_post_op_update_inode(old_dir, res->old_fattr); | |
2747 | update_changeattr(new_dir, &res->new_cinfo); | |
2748 | nfs_post_op_update_inode(new_dir, res->new_fattr); | |
2749 | return 1; | |
2750 | } | |
2751 | ||
1da177e4 LT |
2752 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
2753 | struct inode *new_dir, struct qstr *new_name) | |
2754 | { | |
6caf2c82 | 2755 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 2756 | struct nfs_renameargs arg = { |
1da177e4 LT |
2757 | .old_dir = NFS_FH(old_dir), |
2758 | .new_dir = NFS_FH(new_dir), | |
2759 | .old_name = old_name, | |
2760 | .new_name = new_name, | |
6caf2c82 TM |
2761 | .bitmask = server->attr_bitmask, |
2762 | }; | |
e8582a8b | 2763 | struct nfs_renameres res = { |
6caf2c82 | 2764 | .server = server, |
1da177e4 | 2765 | }; |
1da177e4 LT |
2766 | struct rpc_message msg = { |
2767 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
2768 | .rpc_argp = &arg, | |
2769 | .rpc_resp = &res, | |
2770 | }; | |
011fff72 | 2771 | int status = -ENOMEM; |
1da177e4 | 2772 | |
011fff72 TM |
2773 | res.old_fattr = nfs_alloc_fattr(); |
2774 | res.new_fattr = nfs_alloc_fattr(); | |
2775 | if (res.old_fattr == NULL || res.new_fattr == NULL) | |
2776 | goto out; | |
1da177e4 | 2777 | |
7c513058 | 2778 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
2779 | if (!status) { |
2780 | update_changeattr(old_dir, &res.old_cinfo); | |
6caf2c82 | 2781 | nfs_post_op_update_inode(old_dir, res.old_fattr); |
1da177e4 | 2782 | update_changeattr(new_dir, &res.new_cinfo); |
6caf2c82 | 2783 | nfs_post_op_update_inode(new_dir, res.new_fattr); |
1da177e4 | 2784 | } |
011fff72 TM |
2785 | out: |
2786 | nfs_free_fattr(res.new_fattr); | |
2787 | nfs_free_fattr(res.old_fattr); | |
1da177e4 LT |
2788 | return status; |
2789 | } | |
2790 | ||
2791 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2792 | struct inode *new_dir, struct qstr *new_name) | |
2793 | { | |
2794 | struct nfs4_exception exception = { }; | |
2795 | int err; | |
2796 | do { | |
2797 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
2798 | _nfs4_proc_rename(old_dir, old_name, | |
2799 | new_dir, new_name), | |
2800 | &exception); | |
2801 | } while (exception.retry); | |
2802 | return err; | |
2803 | } | |
2804 | ||
2805 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2806 | { | |
91ba2eee | 2807 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2808 | struct nfs4_link_arg arg = { |
2809 | .fh = NFS_FH(inode), | |
2810 | .dir_fh = NFS_FH(dir), | |
2811 | .name = name, | |
91ba2eee TM |
2812 | .bitmask = server->attr_bitmask, |
2813 | }; | |
91ba2eee TM |
2814 | struct nfs4_link_res res = { |
2815 | .server = server, | |
1da177e4 | 2816 | }; |
1da177e4 LT |
2817 | struct rpc_message msg = { |
2818 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
2819 | .rpc_argp = &arg, | |
91ba2eee | 2820 | .rpc_resp = &res, |
1da177e4 | 2821 | }; |
136f2627 TM |
2822 | int status = -ENOMEM; |
2823 | ||
2824 | res.fattr = nfs_alloc_fattr(); | |
2825 | res.dir_attr = nfs_alloc_fattr(); | |
2826 | if (res.fattr == NULL || res.dir_attr == NULL) | |
2827 | goto out; | |
1da177e4 | 2828 | |
7c513058 | 2829 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
2830 | if (!status) { |
2831 | update_changeattr(dir, &res.cinfo); | |
2832 | nfs_post_op_update_inode(dir, res.dir_attr); | |
73a3d07c | 2833 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 2834 | } |
136f2627 TM |
2835 | out: |
2836 | nfs_free_fattr(res.dir_attr); | |
2837 | nfs_free_fattr(res.fattr); | |
1da177e4 LT |
2838 | return status; |
2839 | } | |
2840 | ||
2841 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2842 | { | |
2843 | struct nfs4_exception exception = { }; | |
2844 | int err; | |
2845 | do { | |
2846 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2847 | _nfs4_proc_link(inode, dir, name), | |
2848 | &exception); | |
2849 | } while (exception.retry); | |
2850 | return err; | |
2851 | } | |
2852 | ||
57dc9a57 TM |
2853 | struct nfs4_createdata { |
2854 | struct rpc_message msg; | |
2855 | struct nfs4_create_arg arg; | |
2856 | struct nfs4_create_res res; | |
2857 | struct nfs_fh fh; | |
2858 | struct nfs_fattr fattr; | |
2859 | struct nfs_fattr dir_fattr; | |
2860 | }; | |
2861 | ||
2862 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
2863 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
2864 | { | |
2865 | struct nfs4_createdata *data; | |
2866 | ||
2867 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
2868 | if (data != NULL) { | |
2869 | struct nfs_server *server = NFS_SERVER(dir); | |
2870 | ||
2871 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
2872 | data->msg.rpc_argp = &data->arg; | |
2873 | data->msg.rpc_resp = &data->res; | |
2874 | data->arg.dir_fh = NFS_FH(dir); | |
2875 | data->arg.server = server; | |
2876 | data->arg.name = name; | |
2877 | data->arg.attrs = sattr; | |
2878 | data->arg.ftype = ftype; | |
2879 | data->arg.bitmask = server->attr_bitmask; | |
2880 | data->res.server = server; | |
2881 | data->res.fh = &data->fh; | |
2882 | data->res.fattr = &data->fattr; | |
2883 | data->res.dir_fattr = &data->dir_fattr; | |
2884 | nfs_fattr_init(data->res.fattr); | |
2885 | nfs_fattr_init(data->res.dir_fattr); | |
2886 | } | |
2887 | return data; | |
2888 | } | |
2889 | ||
2890 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
2891 | { | |
7c513058 | 2892 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 2893 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
2894 | if (status == 0) { |
2895 | update_changeattr(dir, &data->res.dir_cinfo); | |
2896 | nfs_post_op_update_inode(dir, data->res.dir_fattr); | |
2897 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); | |
2898 | } | |
2899 | return status; | |
2900 | } | |
2901 | ||
2902 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
2903 | { | |
2904 | kfree(data); | |
2905 | } | |
2906 | ||
4f390c15 | 2907 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2908 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 2909 | { |
57dc9a57 TM |
2910 | struct nfs4_createdata *data; |
2911 | int status = -ENAMETOOLONG; | |
1da177e4 | 2912 | |
94a6d753 | 2913 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 2914 | goto out; |
4f390c15 | 2915 | |
57dc9a57 TM |
2916 | status = -ENOMEM; |
2917 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
2918 | if (data == NULL) | |
2919 | goto out; | |
2920 | ||
2921 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
2922 | data->arg.u.symlink.pages = &page; | |
2923 | data->arg.u.symlink.len = len; | |
1da177e4 | 2924 | |
57dc9a57 TM |
2925 | status = nfs4_do_create(dir, dentry, data); |
2926 | ||
2927 | nfs4_free_createdata(data); | |
2928 | out: | |
1da177e4 LT |
2929 | return status; |
2930 | } | |
2931 | ||
4f390c15 | 2932 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2933 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
2934 | { |
2935 | struct nfs4_exception exception = { }; | |
2936 | int err; | |
2937 | do { | |
2938 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
2939 | _nfs4_proc_symlink(dir, dentry, page, |
2940 | len, sattr), | |
1da177e4 LT |
2941 | &exception); |
2942 | } while (exception.retry); | |
2943 | return err; | |
2944 | } | |
2945 | ||
2946 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2947 | struct iattr *sattr) | |
2948 | { | |
57dc9a57 TM |
2949 | struct nfs4_createdata *data; |
2950 | int status = -ENOMEM; | |
1da177e4 | 2951 | |
57dc9a57 TM |
2952 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
2953 | if (data == NULL) | |
2954 | goto out; | |
2955 | ||
2956 | status = nfs4_do_create(dir, dentry, data); | |
2957 | ||
2958 | nfs4_free_createdata(data); | |
2959 | out: | |
1da177e4 LT |
2960 | return status; |
2961 | } | |
2962 | ||
2963 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2964 | struct iattr *sattr) | |
2965 | { | |
2966 | struct nfs4_exception exception = { }; | |
2967 | int err; | |
a8a5da99 AK |
2968 | |
2969 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
2970 | do { |
2971 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2972 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
2973 | &exception); | |
2974 | } while (exception.retry); | |
2975 | return err; | |
2976 | } | |
2977 | ||
2978 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 2979 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
2980 | { |
2981 | struct inode *dir = dentry->d_inode; | |
2982 | struct nfs4_readdir_arg args = { | |
2983 | .fh = NFS_FH(dir), | |
56e4ebf8 | 2984 | .pages = pages, |
1da177e4 LT |
2985 | .pgbase = 0, |
2986 | .count = count, | |
96d25e53 | 2987 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 2988 | .plus = plus, |
1da177e4 LT |
2989 | }; |
2990 | struct nfs4_readdir_res res; | |
2991 | struct rpc_message msg = { | |
2992 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
2993 | .rpc_argp = &args, | |
2994 | .rpc_resp = &res, | |
2995 | .rpc_cred = cred, | |
2996 | }; | |
2997 | int status; | |
2998 | ||
3110ff80 | 2999 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
3000 | dentry->d_parent->d_name.name, |
3001 | dentry->d_name.name, | |
3002 | (unsigned long long)cookie); | |
1da177e4 LT |
3003 | nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args); |
3004 | res.pgbase = args.pgbase; | |
7c513058 | 3005 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3006 | if (status >= 0) { |
1da177e4 | 3007 | memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3008 | status += args.pgbase; |
3009 | } | |
c4812998 TM |
3010 | |
3011 | nfs_invalidate_atime(dir); | |
3012 | ||
3110ff80 | 3013 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3014 | return status; |
3015 | } | |
3016 | ||
3017 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3018 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3019 | { |
3020 | struct nfs4_exception exception = { }; | |
3021 | int err; | |
3022 | do { | |
3023 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
3024 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 3025 | pages, count, plus), |
1da177e4 LT |
3026 | &exception); |
3027 | } while (exception.retry); | |
3028 | return err; | |
3029 | } | |
3030 | ||
3031 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3032 | struct iattr *sattr, dev_t rdev) | |
3033 | { | |
57dc9a57 TM |
3034 | struct nfs4_createdata *data; |
3035 | int mode = sattr->ia_mode; | |
3036 | int status = -ENOMEM; | |
1da177e4 LT |
3037 | |
3038 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
3039 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
57dc9a57 TM |
3040 | |
3041 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); | |
3042 | if (data == NULL) | |
3043 | goto out; | |
3044 | ||
1da177e4 | 3045 | if (S_ISFIFO(mode)) |
57dc9a57 | 3046 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3047 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3048 | data->arg.ftype = NF4BLK; |
3049 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3050 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3051 | } |
3052 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3053 | data->arg.ftype = NF4CHR; |
3054 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3055 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 | 3056 | } |
1da177e4 | 3057 | |
57dc9a57 TM |
3058 | status = nfs4_do_create(dir, dentry, data); |
3059 | ||
3060 | nfs4_free_createdata(data); | |
3061 | out: | |
1da177e4 LT |
3062 | return status; |
3063 | } | |
3064 | ||
3065 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3066 | struct iattr *sattr, dev_t rdev) | |
3067 | { | |
3068 | struct nfs4_exception exception = { }; | |
3069 | int err; | |
a8a5da99 AK |
3070 | |
3071 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3072 | do { |
3073 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3074 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
3075 | &exception); | |
3076 | } while (exception.retry); | |
3077 | return err; | |
3078 | } | |
3079 | ||
3080 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3081 | struct nfs_fsstat *fsstat) | |
3082 | { | |
3083 | struct nfs4_statfs_arg args = { | |
3084 | .fh = fhandle, | |
3085 | .bitmask = server->attr_bitmask, | |
3086 | }; | |
24ad148a BH |
3087 | struct nfs4_statfs_res res = { |
3088 | .fsstat = fsstat, | |
3089 | }; | |
1da177e4 LT |
3090 | struct rpc_message msg = { |
3091 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3092 | .rpc_argp = &args, | |
24ad148a | 3093 | .rpc_resp = &res, |
1da177e4 LT |
3094 | }; |
3095 | ||
0e574af1 | 3096 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3097 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3098 | } |
3099 | ||
3100 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3101 | { | |
3102 | struct nfs4_exception exception = { }; | |
3103 | int err; | |
3104 | do { | |
3105 | err = nfs4_handle_exception(server, | |
3106 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3107 | &exception); | |
3108 | } while (exception.retry); | |
3109 | return err; | |
3110 | } | |
3111 | ||
3112 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3113 | struct nfs_fsinfo *fsinfo) | |
3114 | { | |
3115 | struct nfs4_fsinfo_arg args = { | |
3116 | .fh = fhandle, | |
3117 | .bitmask = server->attr_bitmask, | |
3118 | }; | |
3dda5e43 BH |
3119 | struct nfs4_fsinfo_res res = { |
3120 | .fsinfo = fsinfo, | |
3121 | }; | |
1da177e4 LT |
3122 | struct rpc_message msg = { |
3123 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3124 | .rpc_argp = &args, | |
3dda5e43 | 3125 | .rpc_resp = &res, |
1da177e4 LT |
3126 | }; |
3127 | ||
7c513058 | 3128 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3129 | } |
3130 | ||
3131 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3132 | { | |
3133 | struct nfs4_exception exception = { }; | |
3134 | int err; | |
3135 | ||
3136 | do { | |
3137 | err = nfs4_handle_exception(server, | |
3138 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
3139 | &exception); | |
3140 | } while (exception.retry); | |
3141 | return err; | |
3142 | } | |
3143 | ||
3144 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3145 | { | |
0e574af1 | 3146 | nfs_fattr_init(fsinfo->fattr); |
1da177e4 LT |
3147 | return nfs4_do_fsinfo(server, fhandle, fsinfo); |
3148 | } | |
3149 | ||
3150 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3151 | struct nfs_pathconf *pathconf) | |
3152 | { | |
3153 | struct nfs4_pathconf_arg args = { | |
3154 | .fh = fhandle, | |
3155 | .bitmask = server->attr_bitmask, | |
3156 | }; | |
d45b2989 BH |
3157 | struct nfs4_pathconf_res res = { |
3158 | .pathconf = pathconf, | |
3159 | }; | |
1da177e4 LT |
3160 | struct rpc_message msg = { |
3161 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3162 | .rpc_argp = &args, | |
d45b2989 | 3163 | .rpc_resp = &res, |
1da177e4 LT |
3164 | }; |
3165 | ||
3166 | /* None of the pathconf attributes are mandatory to implement */ | |
3167 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3168 | memset(pathconf, 0, sizeof(*pathconf)); | |
3169 | return 0; | |
3170 | } | |
3171 | ||
0e574af1 | 3172 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3173 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3174 | } |
3175 | ||
3176 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3177 | struct nfs_pathconf *pathconf) | |
3178 | { | |
3179 | struct nfs4_exception exception = { }; | |
3180 | int err; | |
3181 | ||
3182 | do { | |
3183 | err = nfs4_handle_exception(server, | |
3184 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3185 | &exception); | |
3186 | } while (exception.retry); | |
3187 | return err; | |
3188 | } | |
3189 | ||
d20581aa BH |
3190 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3191 | { | |
3192 | nfs_invalidate_atime(data->inode); | |
3193 | } | |
3194 | ||
cbdabc7f | 3195 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3196 | { |
ec06c096 | 3197 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 3198 | |
9e33bed5 | 3199 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3200 | rpc_restart_call_prepare(task); |
ec06c096 | 3201 | return -EAGAIN; |
1da177e4 | 3202 | } |
8850df99 | 3203 | |
d20581aa | 3204 | __nfs4_read_done_cb(data); |
1da177e4 | 3205 | if (task->tk_status > 0) |
ec06c096 TM |
3206 | renew_lease(server, data->timestamp); |
3207 | return 0; | |
1da177e4 LT |
3208 | } |
3209 | ||
cbdabc7f AA |
3210 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3211 | { | |
3212 | ||
3213 | dprintk("--> %s\n", __func__); | |
3214 | ||
3215 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3216 | return -EAGAIN; | |
3217 | ||
d20581aa BH |
3218 | return data->read_done_cb ? data->read_done_cb(task, data) : |
3219 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
3220 | } |
3221 | ||
bdc7f021 | 3222 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3223 | { |
1da177e4 | 3224 | data->timestamp = jiffies; |
cbdabc7f | 3225 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3226 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
1da177e4 LT |
3227 | } |
3228 | ||
cbdabc7f AA |
3229 | /* Reset the the nfs_read_data to send the read to the MDS. */ |
3230 | void nfs4_reset_read(struct rpc_task *task, struct nfs_read_data *data) | |
3231 | { | |
3232 | dprintk("%s Reset task for i/o through\n", __func__); | |
3233 | put_lseg(data->lseg); | |
3234 | data->lseg = NULL; | |
3235 | /* offsets will differ in the dense stripe case */ | |
3236 | data->args.offset = data->mds_offset; | |
3237 | data->ds_clp = NULL; | |
3238 | data->args.fh = NFS_FH(data->inode); | |
3239 | data->read_done_cb = nfs4_read_done_cb; | |
3240 | task->tk_ops = data->mds_ops; | |
3241 | rpc_task_reset_client(task, NFS_CLIENT(data->inode)); | |
3242 | } | |
3243 | EXPORT_SYMBOL_GPL(nfs4_reset_read); | |
3244 | ||
b029bc9b | 3245 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3246 | { |
1da177e4 LT |
3247 | struct inode *inode = data->inode; |
3248 | ||
9e33bed5 | 3249 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3250 | rpc_restart_call_prepare(task); |
788e7a89 | 3251 | return -EAGAIN; |
1da177e4 | 3252 | } |
4f9838c7 | 3253 | if (task->tk_status >= 0) { |
1da177e4 | 3254 | renew_lease(NFS_SERVER(inode), data->timestamp); |
70ca8852 | 3255 | nfs_post_op_update_inode_force_wcc(inode, data->res.fattr); |
4f9838c7 | 3256 | } |
788e7a89 | 3257 | return 0; |
1da177e4 LT |
3258 | } |
3259 | ||
b029bc9b FI |
3260 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3261 | { | |
3262 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3263 | return -EAGAIN; | |
d20581aa BH |
3264 | return data->write_done_cb ? data->write_done_cb(task, data) : |
3265 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
3266 | } |
3267 | ||
a69aef14 FI |
3268 | /* Reset the the nfs_write_data to send the write to the MDS. */ |
3269 | void nfs4_reset_write(struct rpc_task *task, struct nfs_write_data *data) | |
3270 | { | |
3271 | dprintk("%s Reset task for i/o through\n", __func__); | |
3272 | put_lseg(data->lseg); | |
3273 | data->lseg = NULL; | |
3274 | data->ds_clp = NULL; | |
3275 | data->write_done_cb = nfs4_write_done_cb; | |
3276 | data->args.fh = NFS_FH(data->inode); | |
3277 | data->args.bitmask = data->res.server->cache_consistency_bitmask; | |
3278 | data->args.offset = data->mds_offset; | |
3279 | data->res.fattr = &data->fattr; | |
3280 | task->tk_ops = data->mds_ops; | |
3281 | rpc_task_reset_client(task, NFS_CLIENT(data->inode)); | |
3282 | } | |
3283 | EXPORT_SYMBOL_GPL(nfs4_reset_write); | |
3284 | ||
bdc7f021 | 3285 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3286 | { |
bdc7f021 TM |
3287 | struct nfs_server *server = NFS_SERVER(data->inode); |
3288 | ||
7ffd1064 FI |
3289 | if (data->lseg) { |
3290 | data->args.bitmask = NULL; | |
3291 | data->res.fattr = NULL; | |
3292 | } else | |
3293 | data->args.bitmask = server->cache_consistency_bitmask; | |
b029bc9b FI |
3294 | if (!data->write_done_cb) |
3295 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3296 | data->res.server = server; |
1da177e4 LT |
3297 | data->timestamp = jiffies; |
3298 | ||
bdc7f021 | 3299 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
1da177e4 LT |
3300 | } |
3301 | ||
5f452431 | 3302 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3303 | { |
1da177e4 | 3304 | struct inode *inode = data->inode; |
14516c3a | 3305 | |
9e33bed5 | 3306 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
d00c5d43 | 3307 | rpc_restart_call_prepare(task); |
788e7a89 | 3308 | return -EAGAIN; |
1da177e4 | 3309 | } |
9e08a3c5 | 3310 | nfs_refresh_inode(inode, data->res.fattr); |
788e7a89 | 3311 | return 0; |
1da177e4 LT |
3312 | } |
3313 | ||
5f452431 FI |
3314 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data) |
3315 | { | |
3316 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3317 | return -EAGAIN; | |
3318 | return data->write_done_cb(task, data); | |
3319 | } | |
3320 | ||
bdc7f021 | 3321 | static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3322 | { |
788e7a89 | 3323 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce FI |
3324 | |
3325 | if (data->lseg) { | |
3326 | data->args.bitmask = NULL; | |
3327 | data->res.fattr = NULL; | |
3328 | } else | |
3329 | data->args.bitmask = server->cache_consistency_bitmask; | |
5f452431 FI |
3330 | if (!data->write_done_cb) |
3331 | data->write_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 3332 | data->res.server = server; |
bdc7f021 | 3333 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
1da177e4 LT |
3334 | } |
3335 | ||
9bc4e3ca CL |
3336 | struct nfs4_renewdata { |
3337 | struct nfs_client *client; | |
3338 | unsigned long timestamp; | |
3339 | }; | |
3340 | ||
1da177e4 LT |
3341 | /* |
3342 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3343 | * standalone procedure for queueing an asynchronous RENEW. | |
3344 | */ | |
9bc4e3ca | 3345 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3346 | { |
9bc4e3ca CL |
3347 | struct nfs4_renewdata *data = calldata; |
3348 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3349 | |
0851de06 AB |
3350 | if (atomic_read(&clp->cl_count) > 1) |
3351 | nfs4_schedule_state_renewal(clp); | |
3352 | nfs_put_client(clp); | |
9bc4e3ca | 3353 | kfree(data); |
dc96aef9 AB |
3354 | } |
3355 | ||
9bc4e3ca | 3356 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3357 | { |
9bc4e3ca CL |
3358 | struct nfs4_renewdata *data = calldata; |
3359 | struct nfs_client *clp = data->client; | |
3360 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3361 | |
3362 | if (task->tk_status < 0) { | |
95baa25c | 3363 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
3364 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
3365 | return; | |
3366 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 3367 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
3368 | return; |
3369 | } | |
3370 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 3371 | } |
452e9352 | 3372 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3373 | } |
3374 | ||
963d8fe5 TM |
3375 | static const struct rpc_call_ops nfs4_renew_ops = { |
3376 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3377 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3378 | }; |
3379 | ||
2f60ea6b | 3380 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
3381 | { |
3382 | struct rpc_message msg = { | |
3383 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3384 | .rpc_argp = clp, | |
b4454fe1 | 3385 | .rpc_cred = cred, |
1da177e4 | 3386 | }; |
9bc4e3ca | 3387 | struct nfs4_renewdata *data; |
1da177e4 | 3388 | |
2f60ea6b TM |
3389 | if (renew_flags == 0) |
3390 | return 0; | |
0851de06 AB |
3391 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3392 | return -EIO; | |
b569ad34 | 3393 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
3394 | if (data == NULL) |
3395 | return -ENOMEM; | |
3396 | data->client = clp; | |
3397 | data->timestamp = jiffies; | |
1da177e4 | 3398 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, |
9bc4e3ca | 3399 | &nfs4_renew_ops, data); |
1da177e4 LT |
3400 | } |
3401 | ||
8534d4ec | 3402 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3403 | { |
3404 | struct rpc_message msg = { | |
3405 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3406 | .rpc_argp = clp, | |
b4454fe1 | 3407 | .rpc_cred = cred, |
1da177e4 LT |
3408 | }; |
3409 | unsigned long now = jiffies; | |
3410 | int status; | |
3411 | ||
3412 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3413 | if (status < 0) | |
3414 | return status; | |
452e9352 | 3415 | do_renew_lease(clp, now); |
1da177e4 LT |
3416 | return 0; |
3417 | } | |
3418 | ||
aa1870af BF |
3419 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3420 | { | |
3421 | return (server->caps & NFS_CAP_ACLS) | |
3422 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3423 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3424 | } | |
3425 | ||
3426 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that | |
3427 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on | |
3428 | * the stack. | |
3429 | */ | |
3430 | #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT) | |
3431 | ||
3432 | static void buf_to_pages(const void *buf, size_t buflen, | |
3433 | struct page **pages, unsigned int *pgbase) | |
3434 | { | |
3435 | const void *p = buf; | |
3436 | ||
3437 | *pgbase = offset_in_page(buf); | |
3438 | p -= *pgbase; | |
3439 | while (p < buf + buflen) { | |
3440 | *(pages++) = virt_to_page(p); | |
3441 | p += PAGE_CACHE_SIZE; | |
3442 | } | |
3443 | } | |
3444 | ||
e9e3d724 NH |
3445 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
3446 | struct page **pages, unsigned int *pgbase) | |
3447 | { | |
3448 | struct page *newpage, **spages; | |
3449 | int rc = 0; | |
3450 | size_t len; | |
3451 | spages = pages; | |
3452 | ||
3453 | do { | |
43b7c3f0 | 3454 | len = min_t(size_t, PAGE_CACHE_SIZE, buflen); |
e9e3d724 NH |
3455 | newpage = alloc_page(GFP_KERNEL); |
3456 | ||
3457 | if (newpage == NULL) | |
3458 | goto unwind; | |
3459 | memcpy(page_address(newpage), buf, len); | |
3460 | buf += len; | |
3461 | buflen -= len; | |
3462 | *pages++ = newpage; | |
3463 | rc++; | |
3464 | } while (buflen != 0); | |
3465 | ||
3466 | return rc; | |
3467 | ||
3468 | unwind: | |
3469 | for(; rc > 0; rc--) | |
3470 | __free_page(spages[rc-1]); | |
3471 | return -ENOMEM; | |
3472 | } | |
3473 | ||
e50a1c2e BF |
3474 | struct nfs4_cached_acl { |
3475 | int cached; | |
3476 | size_t len; | |
3e9d4154 | 3477 | char data[0]; |
e50a1c2e BF |
3478 | }; |
3479 | ||
3480 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3481 | { | |
3482 | struct nfs_inode *nfsi = NFS_I(inode); | |
3483 | ||
3484 | spin_lock(&inode->i_lock); | |
3485 | kfree(nfsi->nfs4_acl); | |
3486 | nfsi->nfs4_acl = acl; | |
3487 | spin_unlock(&inode->i_lock); | |
3488 | } | |
3489 | ||
3490 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3491 | { | |
3492 | nfs4_set_cached_acl(inode, NULL); | |
3493 | } | |
3494 | ||
3495 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3496 | { | |
3497 | struct nfs_inode *nfsi = NFS_I(inode); | |
3498 | struct nfs4_cached_acl *acl; | |
3499 | int ret = -ENOENT; | |
3500 | ||
3501 | spin_lock(&inode->i_lock); | |
3502 | acl = nfsi->nfs4_acl; | |
3503 | if (acl == NULL) | |
3504 | goto out; | |
3505 | if (buf == NULL) /* user is just asking for length */ | |
3506 | goto out_len; | |
3507 | if (acl->cached == 0) | |
3508 | goto out; | |
3509 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3510 | if (acl->len > buflen) | |
3511 | goto out; | |
3512 | memcpy(buf, acl->data, acl->len); | |
3513 | out_len: | |
3514 | ret = acl->len; | |
3515 | out: | |
3516 | spin_unlock(&inode->i_lock); | |
3517 | return ret; | |
3518 | } | |
3519 | ||
3520 | static void nfs4_write_cached_acl(struct inode *inode, const char *buf, size_t acl_len) | |
3521 | { | |
3522 | struct nfs4_cached_acl *acl; | |
3523 | ||
3524 | if (buf && acl_len <= PAGE_SIZE) { | |
3525 | acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL); | |
3526 | if (acl == NULL) | |
3527 | goto out; | |
3528 | acl->cached = 1; | |
3529 | memcpy(acl->data, buf, acl_len); | |
3530 | } else { | |
3531 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3532 | if (acl == NULL) | |
3533 | goto out; | |
3534 | acl->cached = 0; | |
3535 | } | |
3536 | acl->len = acl_len; | |
3537 | out: | |
3538 | nfs4_set_cached_acl(inode, acl); | |
3539 | } | |
3540 | ||
16b4289c | 3541 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3542 | { |
aa1870af BF |
3543 | struct page *pages[NFS4ACL_MAXPAGES]; |
3544 | struct nfs_getaclargs args = { | |
3545 | .fh = NFS_FH(inode), | |
3546 | .acl_pages = pages, | |
3547 | .acl_len = buflen, | |
3548 | }; | |
663c79b3 BH |
3549 | struct nfs_getaclres res = { |
3550 | .acl_len = buflen, | |
3551 | }; | |
e50a1c2e | 3552 | void *resp_buf; |
aa1870af BF |
3553 | struct rpc_message msg = { |
3554 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3555 | .rpc_argp = &args, | |
663c79b3 | 3556 | .rpc_resp = &res, |
aa1870af | 3557 | }; |
e50a1c2e | 3558 | struct page *localpage = NULL; |
aa1870af BF |
3559 | int ret; |
3560 | ||
e50a1c2e BF |
3561 | if (buflen < PAGE_SIZE) { |
3562 | /* As long as we're doing a round trip to the server anyway, | |
3563 | * let's be prepared for a page of acl data. */ | |
3564 | localpage = alloc_page(GFP_KERNEL); | |
3565 | resp_buf = page_address(localpage); | |
3566 | if (localpage == NULL) | |
3567 | return -ENOMEM; | |
3568 | args.acl_pages[0] = localpage; | |
3569 | args.acl_pgbase = 0; | |
663c79b3 | 3570 | args.acl_len = PAGE_SIZE; |
e50a1c2e BF |
3571 | } else { |
3572 | resp_buf = buf; | |
3573 | buf_to_pages(buf, buflen, args.acl_pages, &args.acl_pgbase); | |
3574 | } | |
7c513058 | 3575 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
e50a1c2e BF |
3576 | if (ret) |
3577 | goto out_free; | |
663c79b3 BH |
3578 | if (res.acl_len > args.acl_len) |
3579 | nfs4_write_cached_acl(inode, NULL, res.acl_len); | |
e50a1c2e | 3580 | else |
663c79b3 | 3581 | nfs4_write_cached_acl(inode, resp_buf, res.acl_len); |
e50a1c2e BF |
3582 | if (buf) { |
3583 | ret = -ERANGE; | |
663c79b3 | 3584 | if (res.acl_len > buflen) |
e50a1c2e BF |
3585 | goto out_free; |
3586 | if (localpage) | |
663c79b3 | 3587 | memcpy(buf, resp_buf, res.acl_len); |
e50a1c2e | 3588 | } |
663c79b3 | 3589 | ret = res.acl_len; |
e50a1c2e BF |
3590 | out_free: |
3591 | if (localpage) | |
3592 | __free_page(localpage); | |
aa1870af BF |
3593 | return ret; |
3594 | } | |
3595 | ||
16b4289c TM |
3596 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
3597 | { | |
3598 | struct nfs4_exception exception = { }; | |
3599 | ssize_t ret; | |
3600 | do { | |
3601 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
3602 | if (ret >= 0) | |
3603 | break; | |
3604 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
3605 | } while (exception.retry); | |
3606 | return ret; | |
3607 | } | |
3608 | ||
e50a1c2e BF |
3609 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
3610 | { | |
3611 | struct nfs_server *server = NFS_SERVER(inode); | |
3612 | int ret; | |
3613 | ||
3614 | if (!nfs4_server_supports_acls(server)) | |
3615 | return -EOPNOTSUPP; | |
3616 | ret = nfs_revalidate_inode(server, inode); | |
3617 | if (ret < 0) | |
3618 | return ret; | |
08a22b39 AK |
3619 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
3620 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
3621 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
3622 | if (ret != -ENOENT) | |
3623 | return ret; | |
3624 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
3625 | } | |
3626 | ||
16b4289c | 3627 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
3628 | { |
3629 | struct nfs_server *server = NFS_SERVER(inode); | |
3630 | struct page *pages[NFS4ACL_MAXPAGES]; | |
3631 | struct nfs_setaclargs arg = { | |
3632 | .fh = NFS_FH(inode), | |
3633 | .acl_pages = pages, | |
3634 | .acl_len = buflen, | |
3635 | }; | |
73c403a9 | 3636 | struct nfs_setaclres res; |
4b580ee3 BF |
3637 | struct rpc_message msg = { |
3638 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
3639 | .rpc_argp = &arg, | |
73c403a9 | 3640 | .rpc_resp = &res, |
4b580ee3 | 3641 | }; |
e9e3d724 | 3642 | int ret, i; |
4b580ee3 BF |
3643 | |
3644 | if (!nfs4_server_supports_acls(server)) | |
3645 | return -EOPNOTSUPP; | |
e9e3d724 NH |
3646 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
3647 | if (i < 0) | |
3648 | return i; | |
642ac549 | 3649 | nfs_inode_return_delegation(inode); |
7c513058 | 3650 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
3651 | |
3652 | /* | |
3653 | * Free each page after tx, so the only ref left is | |
3654 | * held by the network stack | |
3655 | */ | |
3656 | for (; i > 0; i--) | |
3657 | put_page(pages[i-1]); | |
3658 | ||
08a22b39 AK |
3659 | /* |
3660 | * Acl update can result in inode attribute update. | |
3661 | * so mark the attribute cache invalid. | |
3662 | */ | |
3663 | spin_lock(&inode->i_lock); | |
3664 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
3665 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
3666 | nfs_access_zap_cache(inode); |
3667 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
3668 | return ret; |
3669 | } | |
3670 | ||
16b4289c TM |
3671 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
3672 | { | |
3673 | struct nfs4_exception exception = { }; | |
3674 | int err; | |
3675 | do { | |
3676 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3677 | __nfs4_proc_set_acl(inode, buf, buflen), | |
3678 | &exception); | |
3679 | } while (exception.retry); | |
3680 | return err; | |
3681 | } | |
3682 | ||
1da177e4 | 3683 | static int |
aa5190d0 | 3684 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 3685 | { |
aa5190d0 TM |
3686 | struct nfs_client *clp = server->nfs_client; |
3687 | ||
3688 | if (task->tk_status >= 0) | |
1da177e4 LT |
3689 | return 0; |
3690 | switch(task->tk_status) { | |
9e33bed5 TM |
3691 | case -NFS4ERR_ADMIN_REVOKED: |
3692 | case -NFS4ERR_BAD_STATEID: | |
3693 | case -NFS4ERR_OPENMODE: | |
3694 | if (state == NULL) | |
3695 | break; | |
0400a6b0 TM |
3696 | nfs4_schedule_stateid_recovery(server, state); |
3697 | goto wait_on_recovery; | |
0ced63d1 TM |
3698 | case -NFS4ERR_EXPIRED: |
3699 | if (state != NULL) | |
3700 | nfs4_schedule_stateid_recovery(server, state); | |
1da177e4 | 3701 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 3702 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
3703 | nfs4_schedule_lease_recovery(clp); |
3704 | goto wait_on_recovery; | |
4745e315 AA |
3705 | #if defined(CONFIG_NFS_V4_1) |
3706 | case -NFS4ERR_BADSESSION: | |
3707 | case -NFS4ERR_BADSLOT: | |
3708 | case -NFS4ERR_BAD_HIGH_SLOT: | |
3709 | case -NFS4ERR_DEADSESSION: | |
3710 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
3711 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
3712 | case -NFS4ERR_SEQ_MISORDERED: | |
3713 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
3714 | task->tk_status); | |
0400a6b0 | 3715 | nfs4_schedule_session_recovery(clp->cl_session); |
4745e315 AA |
3716 | task->tk_status = 0; |
3717 | return -EAGAIN; | |
3718 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 3719 | case -NFS4ERR_DELAY: |
aa5190d0 | 3720 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 3721 | case -NFS4ERR_GRACE: |
2c643488 | 3722 | case -EKEYEXPIRED: |
1da177e4 LT |
3723 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
3724 | task->tk_status = 0; | |
3725 | return -EAGAIN; | |
a8a4ae3a | 3726 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
3727 | case -NFS4ERR_OLD_STATEID: |
3728 | task->tk_status = 0; | |
3729 | return -EAGAIN; | |
3730 | } | |
3731 | task->tk_status = nfs4_map_errors(task->tk_status); | |
3732 | return 0; | |
0400a6b0 | 3733 | wait_on_recovery: |
a2c0b9e2 | 3734 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
3735 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
3736 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
3737 | task->tk_status = 0; | |
3738 | return -EAGAIN; | |
1da177e4 LT |
3739 | } |
3740 | ||
bb8b27e5 TM |
3741 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
3742 | unsigned short port, struct rpc_cred *cred, | |
3743 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
3744 | { |
3745 | nfs4_verifier sc_verifier; | |
3746 | struct nfs4_setclientid setclientid = { | |
3747 | .sc_verifier = &sc_verifier, | |
3748 | .sc_prog = program, | |
f4eecd5d | 3749 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
3750 | }; |
3751 | struct rpc_message msg = { | |
3752 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
3753 | .rpc_argp = &setclientid, | |
bb8b27e5 | 3754 | .rpc_resp = res, |
286d7d6a | 3755 | .rpc_cred = cred, |
1da177e4 | 3756 | }; |
bc4785cd | 3757 | __be32 *p; |
1da177e4 LT |
3758 | int loop = 0; |
3759 | int status; | |
3760 | ||
bc4785cd | 3761 | p = (__be32*)sc_verifier.data; |
1da177e4 LT |
3762 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); |
3763 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
3764 | ||
3765 | for(;;) { | |
3766 | setclientid.sc_name_len = scnprintf(setclientid.sc_name, | |
69dd716c | 3767 | sizeof(setclientid.sc_name), "%s/%s %s %s %u", |
d4d3c507 CL |
3768 | clp->cl_ipaddr, |
3769 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3770 | RPC_DISPLAY_ADDR), | |
69dd716c TM |
3771 | rpc_peeraddr2str(clp->cl_rpcclient, |
3772 | RPC_DISPLAY_PROTO), | |
78ea323b | 3773 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
1da177e4 LT |
3774 | clp->cl_id_uniquifier); |
3775 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, | |
d4d3c507 CL |
3776 | sizeof(setclientid.sc_netid), |
3777 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3778 | RPC_DISPLAY_NETID)); | |
1da177e4 | 3779 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 3780 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
3781 | clp->cl_ipaddr, port >> 8, port & 255); |
3782 | ||
1bd714f2 | 3783 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
3784 | if (status != -NFS4ERR_CLID_INUSE) |
3785 | break; | |
fd954ae1 TM |
3786 | if (loop != 0) { |
3787 | ++clp->cl_id_uniquifier; | |
1da177e4 | 3788 | break; |
fd954ae1 TM |
3789 | } |
3790 | ++loop; | |
3791 | ssleep(clp->cl_lease_time / HZ + 1); | |
1da177e4 LT |
3792 | } |
3793 | return status; | |
3794 | } | |
3795 | ||
fd954ae1 | 3796 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
3797 | struct nfs4_setclientid_res *arg, |
3798 | struct rpc_cred *cred) | |
1da177e4 LT |
3799 | { |
3800 | struct nfs_fsinfo fsinfo; | |
3801 | struct rpc_message msg = { | |
3802 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 3803 | .rpc_argp = arg, |
1da177e4 | 3804 | .rpc_resp = &fsinfo, |
286d7d6a | 3805 | .rpc_cred = cred, |
1da177e4 LT |
3806 | }; |
3807 | unsigned long now; | |
3808 | int status; | |
3809 | ||
3810 | now = jiffies; | |
1bd714f2 | 3811 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
3812 | if (status == 0) { |
3813 | spin_lock(&clp->cl_lock); | |
3814 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
3815 | clp->cl_last_renewal = now; | |
3816 | spin_unlock(&clp->cl_lock); | |
3817 | } | |
3818 | return status; | |
3819 | } | |
3820 | ||
fe650407 TM |
3821 | struct nfs4_delegreturndata { |
3822 | struct nfs4_delegreturnargs args; | |
fa178f29 | 3823 | struct nfs4_delegreturnres res; |
fe650407 TM |
3824 | struct nfs_fh fh; |
3825 | nfs4_stateid stateid; | |
26e976a8 | 3826 | unsigned long timestamp; |
fa178f29 | 3827 | struct nfs_fattr fattr; |
fe650407 TM |
3828 | int rpc_status; |
3829 | }; | |
3830 | ||
fe650407 TM |
3831 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
3832 | { | |
3833 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 3834 | |
14516c3a TM |
3835 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
3836 | return; | |
938e1010 | 3837 | |
79708861 RL |
3838 | switch (task->tk_status) { |
3839 | case -NFS4ERR_STALE_STATEID: | |
3840 | case -NFS4ERR_EXPIRED: | |
3841 | case 0: | |
fa178f29 | 3842 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
3843 | break; |
3844 | default: | |
3845 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
3846 | -EAGAIN) { | |
d00c5d43 | 3847 | rpc_restart_call_prepare(task); |
79708861 RL |
3848 | return; |
3849 | } | |
3850 | } | |
3851 | data->rpc_status = task->tk_status; | |
fe650407 TM |
3852 | } |
3853 | ||
3854 | static void nfs4_delegreturn_release(void *calldata) | |
3855 | { | |
fe650407 TM |
3856 | kfree(calldata); |
3857 | } | |
3858 | ||
938e1010 AA |
3859 | #if defined(CONFIG_NFS_V4_1) |
3860 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
3861 | { | |
3862 | struct nfs4_delegreturndata *d_data; | |
3863 | ||
3864 | d_data = (struct nfs4_delegreturndata *)data; | |
3865 | ||
035168ab | 3866 | if (nfs4_setup_sequence(d_data->res.server, |
938e1010 AA |
3867 | &d_data->args.seq_args, |
3868 | &d_data->res.seq_res, 1, task)) | |
3869 | return; | |
3870 | rpc_call_start(task); | |
3871 | } | |
3872 | #endif /* CONFIG_NFS_V4_1 */ | |
3873 | ||
c8d149f3 | 3874 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
3875 | #if defined(CONFIG_NFS_V4_1) |
3876 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
3877 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
3878 | .rpc_call_done = nfs4_delegreturn_done, |
3879 | .rpc_release = nfs4_delegreturn_release, | |
3880 | }; | |
3881 | ||
e6f81075 | 3882 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
3883 | { |
3884 | struct nfs4_delegreturndata *data; | |
fa178f29 | 3885 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 3886 | struct rpc_task *task; |
5138fde0 TM |
3887 | struct rpc_message msg = { |
3888 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
3889 | .rpc_cred = cred, | |
3890 | }; | |
c970aa85 TM |
3891 | struct rpc_task_setup task_setup_data = { |
3892 | .rpc_client = server->client, | |
5138fde0 | 3893 | .rpc_message = &msg, |
c970aa85 TM |
3894 | .callback_ops = &nfs4_delegreturn_ops, |
3895 | .flags = RPC_TASK_ASYNC, | |
3896 | }; | |
e6f81075 | 3897 | int status = 0; |
fe650407 | 3898 | |
8535b2be | 3899 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
3900 | if (data == NULL) |
3901 | return -ENOMEM; | |
3902 | data->args.fhandle = &data->fh; | |
3903 | data->args.stateid = &data->stateid; | |
fa178f29 | 3904 | data->args.bitmask = server->attr_bitmask; |
fe650407 TM |
3905 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
3906 | memcpy(&data->stateid, stateid, sizeof(data->stateid)); | |
fa178f29 TM |
3907 | data->res.fattr = &data->fattr; |
3908 | data->res.server = server; | |
5138fde0 | 3909 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 3910 | data->timestamp = jiffies; |
fe650407 TM |
3911 | data->rpc_status = 0; |
3912 | ||
c970aa85 | 3913 | task_setup_data.callback_data = data; |
1174dd1f TM |
3914 | msg.rpc_argp = &data->args; |
3915 | msg.rpc_resp = &data->res; | |
c970aa85 | 3916 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 3917 | if (IS_ERR(task)) |
fe650407 | 3918 | return PTR_ERR(task); |
e6f81075 TM |
3919 | if (!issync) |
3920 | goto out; | |
fe650407 | 3921 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
3922 | if (status != 0) |
3923 | goto out; | |
3924 | status = data->rpc_status; | |
3925 | if (status != 0) | |
3926 | goto out; | |
3927 | nfs_refresh_inode(inode, &data->fattr); | |
3928 | out: | |
e6b3c4db | 3929 | rpc_put_task(task); |
fe650407 | 3930 | return status; |
1da177e4 LT |
3931 | } |
3932 | ||
e6f81075 | 3933 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
3934 | { |
3935 | struct nfs_server *server = NFS_SERVER(inode); | |
3936 | struct nfs4_exception exception = { }; | |
3937 | int err; | |
3938 | do { | |
e6f81075 | 3939 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
3940 | switch (err) { |
3941 | case -NFS4ERR_STALE_STATEID: | |
3942 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
3943 | case 0: |
3944 | return 0; | |
3945 | } | |
3946 | err = nfs4_handle_exception(server, err, &exception); | |
3947 | } while (exception.retry); | |
3948 | return err; | |
3949 | } | |
3950 | ||
3951 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
3952 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
3953 | ||
3954 | /* | |
3955 | * sleep, with exponential backoff, and retry the LOCK operation. | |
3956 | */ | |
3957 | static unsigned long | |
3958 | nfs4_set_lock_task_retry(unsigned long timeout) | |
3959 | { | |
150030b7 | 3960 | schedule_timeout_killable(timeout); |
1da177e4 LT |
3961 | timeout <<= 1; |
3962 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
3963 | return NFS4_LOCK_MAXTIMEOUT; | |
3964 | return timeout; | |
3965 | } | |
3966 | ||
1da177e4 LT |
3967 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
3968 | { | |
3969 | struct inode *inode = state->inode; | |
3970 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 3971 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 3972 | struct nfs_lockt_args arg = { |
1da177e4 | 3973 | .fh = NFS_FH(inode), |
911d1aaf | 3974 | .fl = request, |
1da177e4 | 3975 | }; |
911d1aaf TM |
3976 | struct nfs_lockt_res res = { |
3977 | .denied = request, | |
1da177e4 LT |
3978 | }; |
3979 | struct rpc_message msg = { | |
3980 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
3981 | .rpc_argp = &arg, | |
3982 | .rpc_resp = &res, | |
3983 | .rpc_cred = state->owner->so_cred, | |
3984 | }; | |
1da177e4 LT |
3985 | struct nfs4_lock_state *lsp; |
3986 | int status; | |
3987 | ||
911d1aaf | 3988 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
3989 | status = nfs4_set_lock_state(state, request); |
3990 | if (status != 0) | |
3991 | goto out; | |
3992 | lsp = request->fl_u.nfs4_fl.owner; | |
9f958ab8 | 3993 | arg.lock_owner.id = lsp->ls_id.id; |
d035c36c | 3994 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 3995 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
3996 | switch (status) { |
3997 | case 0: | |
3998 | request->fl_type = F_UNLCK; | |
3999 | break; | |
4000 | case -NFS4ERR_DENIED: | |
4001 | status = 0; | |
1da177e4 | 4002 | } |
70cc6487 | 4003 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 4004 | out: |
1da177e4 LT |
4005 | return status; |
4006 | } | |
4007 | ||
4008 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4009 | { | |
4010 | struct nfs4_exception exception = { }; | |
4011 | int err; | |
4012 | ||
4013 | do { | |
4014 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
4015 | _nfs4_proc_getlk(state, cmd, request), | |
4016 | &exception); | |
4017 | } while (exception.retry); | |
4018 | return err; | |
4019 | } | |
4020 | ||
4021 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
4022 | { | |
4023 | int res = 0; | |
4024 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
4025 | case FL_POSIX: | |
4026 | res = posix_lock_file_wait(file, fl); | |
4027 | break; | |
4028 | case FL_FLOCK: | |
4029 | res = flock_lock_file_wait(file, fl); | |
4030 | break; | |
4031 | default: | |
4032 | BUG(); | |
4033 | } | |
1da177e4 LT |
4034 | return res; |
4035 | } | |
4036 | ||
faf5f49c | 4037 | struct nfs4_unlockdata { |
911d1aaf TM |
4038 | struct nfs_locku_args arg; |
4039 | struct nfs_locku_res res; | |
faf5f49c TM |
4040 | struct nfs4_lock_state *lsp; |
4041 | struct nfs_open_context *ctx; | |
911d1aaf TM |
4042 | struct file_lock fl; |
4043 | const struct nfs_server *server; | |
26e976a8 | 4044 | unsigned long timestamp; |
faf5f49c TM |
4045 | }; |
4046 | ||
911d1aaf TM |
4047 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
4048 | struct nfs_open_context *ctx, | |
4049 | struct nfs4_lock_state *lsp, | |
4050 | struct nfs_seqid *seqid) | |
4051 | { | |
4052 | struct nfs4_unlockdata *p; | |
4053 | struct inode *inode = lsp->ls_state->inode; | |
4054 | ||
8535b2be | 4055 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
4056 | if (p == NULL) |
4057 | return NULL; | |
4058 | p->arg.fh = NFS_FH(inode); | |
4059 | p->arg.fl = &p->fl; | |
4060 | p->arg.seqid = seqid; | |
c1d51931 | 4061 | p->res.seqid = seqid; |
911d1aaf TM |
4062 | p->arg.stateid = &lsp->ls_stateid; |
4063 | p->lsp = lsp; | |
4064 | atomic_inc(&lsp->ls_count); | |
4065 | /* Ensure we don't close file until we're done freeing locks! */ | |
4066 | p->ctx = get_nfs_open_context(ctx); | |
4067 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4068 | p->server = NFS_SERVER(inode); | |
4069 | return p; | |
4070 | } | |
4071 | ||
06f814a3 | 4072 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 4073 | { |
963d8fe5 | 4074 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 4075 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
4076 | nfs4_put_lock_state(calldata->lsp); |
4077 | put_nfs_open_context(calldata->ctx); | |
4078 | kfree(calldata); | |
faf5f49c TM |
4079 | } |
4080 | ||
963d8fe5 | 4081 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 4082 | { |
963d8fe5 | 4083 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4084 | |
14516c3a TM |
4085 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
4086 | return; | |
faf5f49c TM |
4087 | switch (task->tk_status) { |
4088 | case 0: | |
4089 | memcpy(calldata->lsp->ls_stateid.data, | |
911d1aaf | 4090 | calldata->res.stateid.data, |
faf5f49c | 4091 | sizeof(calldata->lsp->ls_stateid.data)); |
26e976a8 | 4092 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 4093 | break; |
9e33bed5 TM |
4094 | case -NFS4ERR_BAD_STATEID: |
4095 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
4096 | case -NFS4ERR_STALE_STATEID: |
4097 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
4098 | break; |
4099 | default: | |
9e33bed5 | 4100 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
d00c5d43 | 4101 | rpc_restart_call_prepare(task); |
faf5f49c | 4102 | } |
faf5f49c TM |
4103 | } |
4104 | ||
4ce70ada | 4105 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 4106 | { |
4ce70ada | 4107 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4108 | |
911d1aaf | 4109 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c TM |
4110 | return; |
4111 | if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) { | |
963d8fe5 TM |
4112 | /* Note: exit _without_ running nfs4_locku_done */ |
4113 | task->tk_action = NULL; | |
faf5f49c TM |
4114 | return; |
4115 | } | |
26e976a8 | 4116 | calldata->timestamp = jiffies; |
035168ab | 4117 | if (nfs4_setup_sequence(calldata->server, |
a893693c AA |
4118 | &calldata->arg.seq_args, |
4119 | &calldata->res.seq_res, 1, task)) | |
4120 | return; | |
5138fde0 | 4121 | rpc_call_start(task); |
faf5f49c TM |
4122 | } |
4123 | ||
963d8fe5 | 4124 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 4125 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 4126 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 4127 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
4128 | }; |
4129 | ||
a5d16a4d TM |
4130 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
4131 | struct nfs_open_context *ctx, | |
4132 | struct nfs4_lock_state *lsp, | |
4133 | struct nfs_seqid *seqid) | |
4134 | { | |
4135 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
4136 | struct rpc_message msg = { |
4137 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
4138 | .rpc_cred = ctx->cred, | |
4139 | }; | |
c970aa85 TM |
4140 | struct rpc_task_setup task_setup_data = { |
4141 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 4142 | .rpc_message = &msg, |
c970aa85 | 4143 | .callback_ops = &nfs4_locku_ops, |
101070ca | 4144 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4145 | .flags = RPC_TASK_ASYNC, |
4146 | }; | |
a5d16a4d | 4147 | |
137d6aca FF |
4148 | /* Ensure this is an unlock - when canceling a lock, the |
4149 | * canceled lock is passed in, and it won't be an unlock. | |
4150 | */ | |
4151 | fl->fl_type = F_UNLCK; | |
4152 | ||
a5d16a4d TM |
4153 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
4154 | if (data == NULL) { | |
4155 | nfs_free_seqid(seqid); | |
4156 | return ERR_PTR(-ENOMEM); | |
4157 | } | |
4158 | ||
1174dd1f TM |
4159 | msg.rpc_argp = &data->arg; |
4160 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4161 | task_setup_data.callback_data = data; |
4162 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
4163 | } |
4164 | ||
faf5f49c TM |
4165 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
4166 | { | |
19e03c57 | 4167 | struct nfs_inode *nfsi = NFS_I(state->inode); |
911d1aaf | 4168 | struct nfs_seqid *seqid; |
1da177e4 | 4169 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
4170 | struct rpc_task *task; |
4171 | int status = 0; | |
536ff0f8 | 4172 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 4173 | |
8d0a8a9d | 4174 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
4175 | /* Unlock _before_ we do the RPC call */ |
4176 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
4177 | down_read(&nfsi->rwsem); |
4178 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
4179 | up_read(&nfsi->rwsem); | |
9b073574 | 4180 | goto out; |
19e03c57 TM |
4181 | } |
4182 | up_read(&nfsi->rwsem); | |
8d0a8a9d | 4183 | if (status != 0) |
9b073574 TM |
4184 | goto out; |
4185 | /* Is this a delegated lock? */ | |
4186 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
4187 | goto out; | |
8d0a8a9d | 4188 | lsp = request->fl_u.nfs4_fl.owner; |
8535b2be | 4189 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 4190 | status = -ENOMEM; |
911d1aaf | 4191 | if (seqid == NULL) |
9b073574 | 4192 | goto out; |
cd3758e3 | 4193 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
4194 | status = PTR_ERR(task); |
4195 | if (IS_ERR(task)) | |
9b073574 | 4196 | goto out; |
a5d16a4d | 4197 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 4198 | rpc_put_task(task); |
9b073574 | 4199 | out: |
536ff0f8 | 4200 | request->fl_flags = fl_flags; |
1da177e4 LT |
4201 | return status; |
4202 | } | |
4203 | ||
a5d16a4d TM |
4204 | struct nfs4_lockdata { |
4205 | struct nfs_lock_args arg; | |
4206 | struct nfs_lock_res res; | |
4207 | struct nfs4_lock_state *lsp; | |
4208 | struct nfs_open_context *ctx; | |
4209 | struct file_lock fl; | |
26e976a8 | 4210 | unsigned long timestamp; |
a5d16a4d TM |
4211 | int rpc_status; |
4212 | int cancelled; | |
66179efe | 4213 | struct nfs_server *server; |
a5d16a4d TM |
4214 | }; |
4215 | ||
4216 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
4217 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
4218 | gfp_t gfp_mask) | |
1da177e4 | 4219 | { |
a5d16a4d TM |
4220 | struct nfs4_lockdata *p; |
4221 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 4222 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 4223 | |
8535b2be | 4224 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
4225 | if (p == NULL) |
4226 | return NULL; | |
4227 | ||
4228 | p->arg.fh = NFS_FH(inode); | |
4229 | p->arg.fl = &p->fl; | |
8535b2be | 4230 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4231 | if (p->arg.open_seqid == NULL) |
4232 | goto out_free; | |
8535b2be | 4233 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4234 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4235 | goto out_free_seqid; |
a5d16a4d | 4236 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4237 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 4238 | p->arg.lock_owner.id = lsp->ls_id.id; |
d035c36c | 4239 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 4240 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4241 | p->lsp = lsp; |
66179efe | 4242 | p->server = server; |
a5d16a4d TM |
4243 | atomic_inc(&lsp->ls_count); |
4244 | p->ctx = get_nfs_open_context(ctx); | |
4245 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4246 | return p; | |
2f74c0a0 TM |
4247 | out_free_seqid: |
4248 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4249 | out_free: |
4250 | kfree(p); | |
4251 | return NULL; | |
4252 | } | |
4253 | ||
4254 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4255 | { | |
4256 | struct nfs4_lockdata *data = calldata; | |
4257 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4258 | |
3110ff80 | 4259 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
4260 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
4261 | return; | |
a5d16a4d TM |
4262 | /* Do we need to do an open_to_lock_owner? */ |
4263 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 TM |
4264 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
4265 | return; | |
a5d16a4d TM |
4266 | data->arg.open_stateid = &state->stateid; |
4267 | data->arg.new_lock_owner = 1; | |
c1d51931 | 4268 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4269 | } else |
4270 | data->arg.new_lock_owner = 0; | |
26e976a8 | 4271 | data->timestamp = jiffies; |
035168ab TM |
4272 | if (nfs4_setup_sequence(data->server, |
4273 | &data->arg.seq_args, | |
66179efe AA |
4274 | &data->res.seq_res, 1, task)) |
4275 | return; | |
5138fde0 | 4276 | rpc_call_start(task); |
3110ff80 | 4277 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
a5d16a4d TM |
4278 | } |
4279 | ||
b257957e AB |
4280 | static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata) |
4281 | { | |
4282 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
4283 | nfs4_lock_prepare(task, calldata); | |
4284 | } | |
4285 | ||
a5d16a4d TM |
4286 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4287 | { | |
4288 | struct nfs4_lockdata *data = calldata; | |
4289 | ||
3110ff80 | 4290 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4291 | |
14516c3a TM |
4292 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4293 | return; | |
66179efe | 4294 | |
a5d16a4d | 4295 | data->rpc_status = task->tk_status; |
a5d16a4d | 4296 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4297 | if (data->rpc_status == 0) |
4298 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4299 | else | |
4300 | goto out; | |
4301 | } | |
4302 | if (data->rpc_status == 0) { | |
4303 | memcpy(data->lsp->ls_stateid.data, data->res.stateid.data, | |
4304 | sizeof(data->lsp->ls_stateid.data)); | |
4305 | data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; | |
3d4ff43d | 4306 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 4307 | } |
a5d16a4d | 4308 | out: |
3110ff80 | 4309 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4310 | } |
4311 | ||
4312 | static void nfs4_lock_release(void *calldata) | |
4313 | { | |
4314 | struct nfs4_lockdata *data = calldata; | |
4315 | ||
3110ff80 | 4316 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4317 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4318 | if (data->cancelled != 0) { |
4319 | struct rpc_task *task; | |
4320 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4321 | data->arg.lock_seqid); | |
4322 | if (!IS_ERR(task)) | |
bf294b41 | 4323 | rpc_put_task_async(task); |
3110ff80 | 4324 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4325 | } else |
4326 | nfs_free_seqid(data->arg.lock_seqid); | |
4327 | nfs4_put_lock_state(data->lsp); | |
4328 | put_nfs_open_context(data->ctx); | |
4329 | kfree(data); | |
3110ff80 | 4330 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4331 | } |
4332 | ||
4333 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4334 | .rpc_call_prepare = nfs4_lock_prepare, | |
4335 | .rpc_call_done = nfs4_lock_done, | |
4336 | .rpc_release = nfs4_lock_release, | |
4337 | }; | |
4338 | ||
b257957e AB |
4339 | static const struct rpc_call_ops nfs4_recover_lock_ops = { |
4340 | .rpc_call_prepare = nfs4_recover_lock_prepare, | |
4341 | .rpc_call_done = nfs4_lock_done, | |
4342 | .rpc_release = nfs4_lock_release, | |
4343 | }; | |
4344 | ||
2bee72a6 TM |
4345 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4346 | { | |
2bee72a6 TM |
4347 | switch (error) { |
4348 | case -NFS4ERR_ADMIN_REVOKED: | |
4349 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 4350 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 TM |
4351 | if (new_lock_owner != 0 || |
4352 | (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0) | |
ecac799a | 4353 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
4354 | break; |
4355 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 4356 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
4357 | case -NFS4ERR_EXPIRED: |
4358 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
4359 | }; |
4360 | } | |
4361 | ||
afe6c27c | 4362 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4363 | { |
4364 | struct nfs4_lockdata *data; | |
4365 | struct rpc_task *task; | |
5138fde0 TM |
4366 | struct rpc_message msg = { |
4367 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4368 | .rpc_cred = state->owner->so_cred, | |
4369 | }; | |
c970aa85 TM |
4370 | struct rpc_task_setup task_setup_data = { |
4371 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4372 | .rpc_message = &msg, |
c970aa85 | 4373 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4374 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4375 | .flags = RPC_TASK_ASYNC, |
4376 | }; | |
a5d16a4d TM |
4377 | int ret; |
4378 | ||
3110ff80 | 4379 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4380 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4381 | fl->fl_u.nfs4_fl.owner, |
4382 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4383 | if (data == NULL) |
4384 | return -ENOMEM; | |
4385 | if (IS_SETLKW(cmd)) | |
4386 | data->arg.block = 1; | |
b257957e AB |
4387 | if (recovery_type > NFS_LOCK_NEW) { |
4388 | if (recovery_type == NFS_LOCK_RECLAIM) | |
afe6c27c | 4389 | data->arg.reclaim = NFS_LOCK_RECLAIM; |
b257957e AB |
4390 | task_setup_data.callback_ops = &nfs4_recover_lock_ops; |
4391 | } | |
1174dd1f TM |
4392 | msg.rpc_argp = &data->arg; |
4393 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4394 | task_setup_data.callback_data = data; |
4395 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 4396 | if (IS_ERR(task)) |
a5d16a4d | 4397 | return PTR_ERR(task); |
a5d16a4d TM |
4398 | ret = nfs4_wait_for_completion_rpc_task(task); |
4399 | if (ret == 0) { | |
4400 | ret = data->rpc_status; | |
2bee72a6 TM |
4401 | if (ret) |
4402 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4403 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4404 | } else |
4405 | data->cancelled = 1; | |
e6b3c4db | 4406 | rpc_put_task(task); |
3110ff80 | 4407 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4408 | return ret; |
1da177e4 LT |
4409 | } |
4410 | ||
4411 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4412 | { | |
202b50dc TM |
4413 | struct nfs_server *server = NFS_SERVER(state->inode); |
4414 | struct nfs4_exception exception = { }; | |
4415 | int err; | |
4416 | ||
4417 | do { | |
42a2d13e TM |
4418 | /* Cache the lock if possible... */ |
4419 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4420 | return 0; | |
afe6c27c | 4421 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 4422 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
4423 | break; |
4424 | nfs4_handle_exception(server, err, &exception); | |
4425 | } while (exception.retry); | |
4426 | return err; | |
1da177e4 LT |
4427 | } |
4428 | ||
4429 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4430 | { | |
202b50dc TM |
4431 | struct nfs_server *server = NFS_SERVER(state->inode); |
4432 | struct nfs4_exception exception = { }; | |
4433 | int err; | |
4434 | ||
6bfc93ef TM |
4435 | err = nfs4_set_lock_state(state, request); |
4436 | if (err != 0) | |
4437 | return err; | |
202b50dc | 4438 | do { |
42a2d13e TM |
4439 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4440 | return 0; | |
afe6c27c | 4441 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
4442 | switch (err) { |
4443 | default: | |
4444 | goto out; | |
4445 | case -NFS4ERR_GRACE: | |
4446 | case -NFS4ERR_DELAY: | |
4447 | nfs4_handle_exception(server, err, &exception); | |
4448 | err = 0; | |
4449 | } | |
202b50dc | 4450 | } while (exception.retry); |
a9ed2e25 | 4451 | out: |
202b50dc | 4452 | return err; |
1da177e4 LT |
4453 | } |
4454 | ||
f062eb6c BS |
4455 | #if defined(CONFIG_NFS_V4_1) |
4456 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4457 | { | |
4458 | int status; | |
4459 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4460 | ||
4461 | status = nfs41_test_stateid(server, state); | |
4462 | if (status == NFS_OK) | |
4463 | return 0; | |
4464 | nfs41_free_stateid(server, state); | |
4465 | return nfs4_lock_expired(state, request); | |
4466 | } | |
4467 | #endif | |
4468 | ||
1da177e4 LT |
4469 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4470 | { | |
19e03c57 | 4471 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 4472 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 4473 | int status = -ENOLCK; |
1da177e4 | 4474 | |
8e469ebd TM |
4475 | if ((fl_flags & FL_POSIX) && |
4476 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
4477 | goto out; | |
6bfc93ef | 4478 | /* Is this a delegated open? */ |
6bfc93ef TM |
4479 | status = nfs4_set_lock_state(state, request); |
4480 | if (status != 0) | |
4481 | goto out; | |
01c3b861 TM |
4482 | request->fl_flags |= FL_ACCESS; |
4483 | status = do_vfs_lock(request->fl_file, request); | |
4484 | if (status < 0) | |
4485 | goto out; | |
19e03c57 | 4486 | down_read(&nfsi->rwsem); |
01c3b861 | 4487 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 4488 | /* Yes: cache locks! */ |
01c3b861 | 4489 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
4490 | request->fl_flags = fl_flags & ~FL_SLEEP; |
4491 | status = do_vfs_lock(request->fl_file, request); | |
4492 | goto out_unlock; | |
01c3b861 | 4493 | } |
afe6c27c | 4494 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 4495 | if (status != 0) |
01c3b861 | 4496 | goto out_unlock; |
6bfc93ef | 4497 | /* Note: we always want to sleep here! */ |
01c3b861 | 4498 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 4499 | if (do_vfs_lock(request->fl_file, request) < 0) |
3110ff80 | 4500 | printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __func__); |
01c3b861 | 4501 | out_unlock: |
19e03c57 | 4502 | up_read(&nfsi->rwsem); |
01c3b861 TM |
4503 | out: |
4504 | request->fl_flags = fl_flags; | |
1da177e4 LT |
4505 | return status; |
4506 | } | |
4507 | ||
4508 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4509 | { | |
4510 | struct nfs4_exception exception = { }; | |
4511 | int err; | |
4512 | ||
4513 | do { | |
965b5d67 TM |
4514 | err = _nfs4_proc_setlk(state, cmd, request); |
4515 | if (err == -NFS4ERR_DENIED) | |
4516 | err = -EAGAIN; | |
1da177e4 | 4517 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 4518 | err, &exception); |
1da177e4 LT |
4519 | } while (exception.retry); |
4520 | return err; | |
4521 | } | |
4522 | ||
4523 | static int | |
4524 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
4525 | { | |
4526 | struct nfs_open_context *ctx; | |
4527 | struct nfs4_state *state; | |
4528 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
4529 | int status; | |
4530 | ||
4531 | /* verify open state */ | |
cd3758e3 | 4532 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
4533 | state = ctx->state; |
4534 | ||
4535 | if (request->fl_start < 0 || request->fl_end < 0) | |
4536 | return -EINVAL; | |
4537 | ||
d953126a TM |
4538 | if (IS_GETLK(cmd)) { |
4539 | if (state != NULL) | |
4540 | return nfs4_proc_getlk(state, F_GETLK, request); | |
4541 | return 0; | |
4542 | } | |
1da177e4 LT |
4543 | |
4544 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
4545 | return -EINVAL; | |
4546 | ||
d953126a TM |
4547 | if (request->fl_type == F_UNLCK) { |
4548 | if (state != NULL) | |
4549 | return nfs4_proc_unlck(state, cmd, request); | |
4550 | return 0; | |
4551 | } | |
1da177e4 | 4552 | |
d953126a TM |
4553 | if (state == NULL) |
4554 | return -ENOLCK; | |
1da177e4 LT |
4555 | do { |
4556 | status = nfs4_proc_setlk(state, cmd, request); | |
4557 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
4558 | break; | |
4559 | timeout = nfs4_set_lock_task_retry(timeout); | |
4560 | status = -ERESTARTSYS; | |
4561 | if (signalled()) | |
4562 | break; | |
4563 | } while(status < 0); | |
1da177e4 LT |
4564 | return status; |
4565 | } | |
4566 | ||
888e694c TM |
4567 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
4568 | { | |
4569 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4570 | struct nfs4_exception exception = { }; | |
4571 | int err; | |
4572 | ||
4573 | err = nfs4_set_lock_state(state, fl); | |
4574 | if (err != 0) | |
4575 | goto out; | |
4576 | do { | |
afe6c27c | 4577 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
d5122201 TM |
4578 | switch (err) { |
4579 | default: | |
4580 | printk(KERN_ERR "%s: unhandled error %d.\n", | |
4581 | __func__, err); | |
4582 | case 0: | |
965b5d67 | 4583 | case -ESTALE: |
d5122201 TM |
4584 | goto out; |
4585 | case -NFS4ERR_EXPIRED: | |
0ced63d1 | 4586 | nfs4_schedule_stateid_recovery(server, state); |
d5122201 | 4587 | case -NFS4ERR_STALE_CLIENTID: |
965b5d67 | 4588 | case -NFS4ERR_STALE_STATEID: |
0400a6b0 TM |
4589 | nfs4_schedule_lease_recovery(server->nfs_client); |
4590 | goto out; | |
74e7bb73 RL |
4591 | case -NFS4ERR_BADSESSION: |
4592 | case -NFS4ERR_BADSLOT: | |
4593 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4594 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4595 | case -NFS4ERR_DEADSESSION: | |
0400a6b0 | 4596 | nfs4_schedule_session_recovery(server->nfs_client->cl_session); |
d5122201 | 4597 | goto out; |
965b5d67 TM |
4598 | case -ERESTARTSYS: |
4599 | /* | |
4600 | * The show must go on: exit, but mark the | |
4601 | * stateid as needing recovery. | |
4602 | */ | |
4603 | case -NFS4ERR_ADMIN_REVOKED: | |
4604 | case -NFS4ERR_BAD_STATEID: | |
4605 | case -NFS4ERR_OPENMODE: | |
0400a6b0 | 4606 | nfs4_schedule_stateid_recovery(server, state); |
965b5d67 TM |
4607 | err = 0; |
4608 | goto out; | |
168667c4 TM |
4609 | case -EKEYEXPIRED: |
4610 | /* | |
4611 | * User RPCSEC_GSS context has expired. | |
4612 | * We cannot recover this stateid now, so | |
4613 | * skip it and allow recovery thread to | |
4614 | * proceed. | |
4615 | */ | |
4616 | err = 0; | |
4617 | goto out; | |
965b5d67 TM |
4618 | case -ENOMEM: |
4619 | case -NFS4ERR_DENIED: | |
4620 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
4621 | err = 0; | |
4622 | goto out; | |
d5122201 TM |
4623 | case -NFS4ERR_DELAY: |
4624 | break; | |
4625 | } | |
888e694c TM |
4626 | err = nfs4_handle_exception(server, err, &exception); |
4627 | } while (exception.retry); | |
4628 | out: | |
4629 | return err; | |
4630 | } | |
6b3b5496 | 4631 | |
d3c7b7cc TM |
4632 | static void nfs4_release_lockowner_release(void *calldata) |
4633 | { | |
4634 | kfree(calldata); | |
4635 | } | |
4636 | ||
4637 | const struct rpc_call_ops nfs4_release_lockowner_ops = { | |
4638 | .rpc_release = nfs4_release_lockowner_release, | |
4639 | }; | |
4640 | ||
4641 | void nfs4_release_lockowner(const struct nfs4_lock_state *lsp) | |
4642 | { | |
4643 | struct nfs_server *server = lsp->ls_state->owner->so_server; | |
4644 | struct nfs_release_lockowner_args *args; | |
4645 | struct rpc_message msg = { | |
4646 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
4647 | }; | |
4648 | ||
4649 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
4650 | return; | |
4651 | args = kmalloc(sizeof(*args), GFP_NOFS); | |
4652 | if (!args) | |
4653 | return; | |
4654 | args->lock_owner.clientid = server->nfs_client->cl_clientid; | |
4655 | args->lock_owner.id = lsp->ls_id.id; | |
d035c36c | 4656 | args->lock_owner.s_dev = server->s_dev; |
d3c7b7cc TM |
4657 | msg.rpc_argp = args; |
4658 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, args); | |
4659 | } | |
4660 | ||
aa1870af BF |
4661 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
4662 | ||
64c2ce8b AK |
4663 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
4664 | const void *buf, size_t buflen, | |
4665 | int flags, int type) | |
6b3b5496 | 4666 | { |
64c2ce8b AK |
4667 | if (strcmp(key, "") != 0) |
4668 | return -EINVAL; | |
4b580ee3 | 4669 | |
64c2ce8b | 4670 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4671 | } |
4672 | ||
64c2ce8b AK |
4673 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
4674 | void *buf, size_t buflen, int type) | |
6b3b5496 | 4675 | { |
64c2ce8b AK |
4676 | if (strcmp(key, "") != 0) |
4677 | return -EINVAL; | |
aa1870af | 4678 | |
64c2ce8b | 4679 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4680 | } |
4681 | ||
64c2ce8b AK |
4682 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
4683 | size_t list_len, const char *name, | |
4684 | size_t name_len, int type) | |
6b3b5496 | 4685 | { |
64c2ce8b | 4686 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 4687 | |
096455a2 BF |
4688 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
4689 | return 0; | |
64c2ce8b AK |
4690 | |
4691 | if (list && len <= list_len) | |
4692 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 4693 | return len; |
6b3b5496 BF |
4694 | } |
4695 | ||
533eb461 AA |
4696 | /* |
4697 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
4698 | */ | |
69aaaae1 TM |
4699 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
4700 | { | |
533eb461 AA |
4701 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
4702 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
4703 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
4704 | (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL))) | |
69aaaae1 TM |
4705 | return; |
4706 | ||
4707 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
4708 | NFS_ATTR_FATTR_NLINK; | |
4709 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; | |
4710 | fattr->nlink = 2; | |
4711 | } | |
4712 | ||
56659e99 | 4713 | int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, |
7aaa0b3b | 4714 | struct nfs4_fs_locations *fs_locations, struct page *page) |
683b57b4 TM |
4715 | { |
4716 | struct nfs_server *server = NFS_SERVER(dir); | |
4717 | u32 bitmask[2] = { | |
361e624f | 4718 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
4719 | }; |
4720 | struct nfs4_fs_locations_arg args = { | |
4721 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 4722 | .name = name, |
683b57b4 TM |
4723 | .page = page, |
4724 | .bitmask = bitmask, | |
4725 | }; | |
22958463 BH |
4726 | struct nfs4_fs_locations_res res = { |
4727 | .fs_locations = fs_locations, | |
4728 | }; | |
683b57b4 TM |
4729 | struct rpc_message msg = { |
4730 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
4731 | .rpc_argp = &args, | |
22958463 | 4732 | .rpc_resp = &res, |
683b57b4 TM |
4733 | }; |
4734 | int status; | |
4735 | ||
3110ff80 | 4736 | dprintk("%s: start\n", __func__); |
533eb461 AA |
4737 | |
4738 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
4739 | * is not supported */ | |
4740 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
4741 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
4742 | else | |
4743 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
4744 | ||
c228fd3a | 4745 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 4746 | fs_locations->server = server; |
830b8e33 | 4747 | fs_locations->nlocations = 0; |
7c513058 | 4748 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 4749 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
4750 | return status; |
4751 | } | |
4752 | ||
5a5ea0d4 BS |
4753 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) |
4754 | { | |
4755 | int status; | |
4756 | struct nfs4_secinfo_arg args = { | |
4757 | .dir_fh = NFS_FH(dir), | |
4758 | .name = name, | |
4759 | }; | |
4760 | struct nfs4_secinfo_res res = { | |
4761 | .flavors = flavors, | |
4762 | }; | |
4763 | struct rpc_message msg = { | |
4764 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
4765 | .rpc_argp = &args, | |
4766 | .rpc_resp = &res, | |
4767 | }; | |
4768 | ||
4769 | dprintk("NFS call secinfo %s\n", name->name); | |
4770 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); | |
4771 | dprintk("NFS reply secinfo: %d\n", status); | |
4772 | return status; | |
4773 | } | |
4774 | ||
4775 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) | |
4776 | { | |
4777 | struct nfs4_exception exception = { }; | |
4778 | int err; | |
4779 | do { | |
4780 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
4781 | _nfs4_proc_secinfo(dir, name, flavors), | |
4782 | &exception); | |
4783 | } while (exception.retry); | |
4784 | return err; | |
4785 | } | |
4786 | ||
557134a3 | 4787 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
4788 | /* |
4789 | * Check the exchange flags returned by the server for invalid flags, having | |
4790 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
4791 | * DS flags set. | |
4792 | */ | |
4793 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
4794 | { | |
4795 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
4796 | goto out_inval; | |
4797 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
4798 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
4799 | goto out_inval; | |
4800 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
4801 | goto out_inval; | |
4802 | return NFS_OK; | |
4803 | out_inval: | |
4804 | return -NFS4ERR_INVAL; | |
4805 | } | |
4806 | ||
78fe0f41 WAA |
4807 | static bool |
4808 | nfs41_same_server_scope(struct server_scope *a, struct server_scope *b) | |
4809 | { | |
4810 | if (a->server_scope_sz == b->server_scope_sz && | |
4811 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
4812 | return true; | |
4813 | ||
4814 | return false; | |
4815 | } | |
4816 | ||
99fe60d0 BH |
4817 | /* |
4818 | * nfs4_proc_exchange_id() | |
4819 | * | |
4820 | * Since the clientid has expired, all compounds using sessions | |
4821 | * associated with the stale clientid will be returning | |
4822 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
4823 | * be in some phase of session reset. | |
4824 | */ | |
4d643d1d | 4825 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
4826 | { |
4827 | nfs4_verifier verifier; | |
4828 | struct nfs41_exchange_id_args args = { | |
4829 | .client = clp, | |
357f54d6 | 4830 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, |
99fe60d0 BH |
4831 | }; |
4832 | struct nfs41_exchange_id_res res = { | |
4833 | .client = clp, | |
4834 | }; | |
4835 | int status; | |
4836 | struct rpc_message msg = { | |
4837 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
4838 | .rpc_argp = &args, | |
4839 | .rpc_resp = &res, | |
4840 | .rpc_cred = cred, | |
4841 | }; | |
4842 | __be32 *p; | |
4843 | ||
4844 | dprintk("--> %s\n", __func__); | |
4845 | BUG_ON(clp == NULL); | |
a7b72103 | 4846 | |
99fe60d0 BH |
4847 | p = (u32 *)verifier.data; |
4848 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); | |
4849 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
4850 | args.verifier = &verifier; | |
4851 | ||
c7a360b0 AA |
4852 | args.id_len = scnprintf(args.id, sizeof(args.id), |
4853 | "%s/%s.%s/%u", | |
4854 | clp->cl_ipaddr, | |
4855 | init_utsname()->nodename, | |
4856 | init_utsname()->domainname, | |
4857 | clp->cl_rpcclient->cl_auth->au_flavor); | |
99fe60d0 | 4858 | |
78fe0f41 WAA |
4859 | res.server_scope = kzalloc(sizeof(struct server_scope), GFP_KERNEL); |
4860 | if (unlikely(!res.server_scope)) | |
4861 | return -ENOMEM; | |
4862 | ||
1bd714f2 | 4863 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c7a360b0 AA |
4864 | if (!status) |
4865 | status = nfs4_check_cl_exchange_flags(clp->cl_exchange_flags); | |
78fe0f41 WAA |
4866 | |
4867 | if (!status) { | |
4868 | if (clp->server_scope && | |
4869 | !nfs41_same_server_scope(clp->server_scope, | |
4870 | res.server_scope)) { | |
4871 | dprintk("%s: server_scope mismatch detected\n", | |
4872 | __func__); | |
4873 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
4874 | kfree(clp->server_scope); | |
4875 | clp->server_scope = NULL; | |
4876 | } | |
4877 | ||
4878 | if (!clp->server_scope) | |
4879 | clp->server_scope = res.server_scope; | |
4880 | else | |
4881 | kfree(res.server_scope); | |
4882 | } | |
4883 | ||
99fe60d0 BH |
4884 | dprintk("<-- %s status= %d\n", __func__, status); |
4885 | return status; | |
4886 | } | |
4887 | ||
2050f0cc AA |
4888 | struct nfs4_get_lease_time_data { |
4889 | struct nfs4_get_lease_time_args *args; | |
4890 | struct nfs4_get_lease_time_res *res; | |
4891 | struct nfs_client *clp; | |
4892 | }; | |
4893 | ||
4894 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
4895 | void *calldata) | |
4896 | { | |
4897 | int ret; | |
4898 | struct nfs4_get_lease_time_data *data = | |
4899 | (struct nfs4_get_lease_time_data *)calldata; | |
4900 | ||
4901 | dprintk("--> %s\n", __func__); | |
689cf5c1 | 4902 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
2050f0cc AA |
4903 | /* just setup sequence, do not trigger session recovery |
4904 | since we're invoked within one */ | |
4905 | ret = nfs41_setup_sequence(data->clp->cl_session, | |
689cf5c1 AB |
4906 | &data->args->la_seq_args, |
4907 | &data->res->lr_seq_res, 0, task); | |
2050f0cc AA |
4908 | |
4909 | BUG_ON(ret == -EAGAIN); | |
4910 | rpc_call_start(task); | |
4911 | dprintk("<-- %s\n", __func__); | |
4912 | } | |
4913 | ||
4914 | /* | |
4915 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
4916 | * from sequence operation or clientid errors. | |
4917 | */ | |
4918 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
4919 | { | |
4920 | struct nfs4_get_lease_time_data *data = | |
4921 | (struct nfs4_get_lease_time_data *)calldata; | |
4922 | ||
4923 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
4924 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
4925 | return; | |
2050f0cc AA |
4926 | switch (task->tk_status) { |
4927 | case -NFS4ERR_DELAY: | |
4928 | case -NFS4ERR_GRACE: | |
4929 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
4930 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
4931 | task->tk_status = 0; | |
a8a4ae3a AA |
4932 | /* fall through */ |
4933 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 4934 | rpc_restart_call_prepare(task); |
2050f0cc AA |
4935 | return; |
4936 | } | |
2050f0cc AA |
4937 | dprintk("<-- %s\n", __func__); |
4938 | } | |
4939 | ||
4940 | struct rpc_call_ops nfs4_get_lease_time_ops = { | |
4941 | .rpc_call_prepare = nfs4_get_lease_time_prepare, | |
4942 | .rpc_call_done = nfs4_get_lease_time_done, | |
4943 | }; | |
4944 | ||
4945 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
4946 | { | |
4947 | struct rpc_task *task; | |
4948 | struct nfs4_get_lease_time_args args; | |
4949 | struct nfs4_get_lease_time_res res = { | |
4950 | .lr_fsinfo = fsinfo, | |
4951 | }; | |
4952 | struct nfs4_get_lease_time_data data = { | |
4953 | .args = &args, | |
4954 | .res = &res, | |
4955 | .clp = clp, | |
4956 | }; | |
4957 | struct rpc_message msg = { | |
4958 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
4959 | .rpc_argp = &args, | |
4960 | .rpc_resp = &res, | |
4961 | }; | |
4962 | struct rpc_task_setup task_setup = { | |
4963 | .rpc_client = clp->cl_rpcclient, | |
4964 | .rpc_message = &msg, | |
4965 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
4966 | .callback_data = &data, |
4967 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
4968 | }; |
4969 | int status; | |
4970 | ||
2050f0cc AA |
4971 | dprintk("--> %s\n", __func__); |
4972 | task = rpc_run_task(&task_setup); | |
4973 | ||
4974 | if (IS_ERR(task)) | |
4975 | status = PTR_ERR(task); | |
4976 | else { | |
4977 | status = task->tk_status; | |
4978 | rpc_put_task(task); | |
4979 | } | |
4980 | dprintk("<-- %s return %d\n", __func__, status); | |
4981 | ||
4982 | return status; | |
4983 | } | |
4984 | ||
b73dafa7 RL |
4985 | /* |
4986 | * Reset a slot table | |
4987 | */ | |
104aeba4 AA |
4988 | static int nfs4_reset_slot_table(struct nfs4_slot_table *tbl, u32 max_reqs, |
4989 | int ivalue) | |
ac72b7b3 | 4990 | { |
104aeba4 | 4991 | struct nfs4_slot *new = NULL; |
b73dafa7 | 4992 | int i; |
ac72b7b3 AA |
4993 | int ret = 0; |
4994 | ||
104aeba4 AA |
4995 | dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__, |
4996 | max_reqs, tbl->max_slots); | |
ac72b7b3 | 4997 | |
104aeba4 AA |
4998 | /* Does the newly negotiated max_reqs match the existing slot table? */ |
4999 | if (max_reqs != tbl->max_slots) { | |
5000 | ret = -ENOMEM; | |
5001 | new = kmalloc(max_reqs * sizeof(struct nfs4_slot), | |
8535b2be | 5002 | GFP_NOFS); |
104aeba4 AA |
5003 | if (!new) |
5004 | goto out; | |
5005 | ret = 0; | |
5006 | kfree(tbl->slots); | |
ac72b7b3 AA |
5007 | } |
5008 | spin_lock(&tbl->slot_tbl_lock); | |
104aeba4 AA |
5009 | if (new) { |
5010 | tbl->slots = new; | |
5011 | tbl->max_slots = max_reqs; | |
5012 | } | |
5013 | for (i = 0; i < tbl->max_slots; ++i) | |
b73dafa7 | 5014 | tbl->slots[i].seq_nr = ivalue; |
ac72b7b3 AA |
5015 | spin_unlock(&tbl->slot_tbl_lock); |
5016 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, | |
5017 | tbl, tbl->slots, tbl->max_slots); | |
5018 | out: | |
5019 | dprintk("<-- %s: return %d\n", __func__, ret); | |
5020 | return ret; | |
5021 | } | |
5022 | ||
f8625a6a RL |
5023 | /* Destroy the slot table */ |
5024 | static void nfs4_destroy_slot_tables(struct nfs4_session *session) | |
5025 | { | |
5026 | if (session->fc_slot_table.slots != NULL) { | |
5027 | kfree(session->fc_slot_table.slots); | |
5028 | session->fc_slot_table.slots = NULL; | |
5029 | } | |
5030 | if (session->bc_slot_table.slots != NULL) { | |
5031 | kfree(session->bc_slot_table.slots); | |
5032 | session->bc_slot_table.slots = NULL; | |
5033 | } | |
5034 | return; | |
5035 | } | |
5036 | ||
fc931582 AA |
5037 | /* |
5038 | * Initialize slot table | |
5039 | */ | |
050047ce RL |
5040 | static int nfs4_init_slot_table(struct nfs4_slot_table *tbl, |
5041 | int max_slots, int ivalue) | |
fc931582 | 5042 | { |
fc931582 AA |
5043 | struct nfs4_slot *slot; |
5044 | int ret = -ENOMEM; | |
5045 | ||
5046 | BUG_ON(max_slots > NFS4_MAX_SLOT_TABLE); | |
5047 | ||
050047ce | 5048 | dprintk("--> %s: max_reqs=%u\n", __func__, max_slots); |
fc931582 | 5049 | |
8535b2be | 5050 | slot = kcalloc(max_slots, sizeof(struct nfs4_slot), GFP_NOFS); |
fc931582 AA |
5051 | if (!slot) |
5052 | goto out; | |
fc931582 AA |
5053 | ret = 0; |
5054 | ||
5055 | spin_lock(&tbl->slot_tbl_lock); | |
fc931582 AA |
5056 | tbl->max_slots = max_slots; |
5057 | tbl->slots = slot; | |
5058 | tbl->highest_used_slotid = -1; /* no slot is currently used */ | |
5059 | spin_unlock(&tbl->slot_tbl_lock); | |
5060 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, | |
5061 | tbl, tbl->slots, tbl->max_slots); | |
5062 | out: | |
5063 | dprintk("<-- %s: return %d\n", __func__, ret); | |
5064 | return ret; | |
fc931582 AA |
5065 | } |
5066 | ||
050047ce | 5067 | /* |
aacd5537 | 5068 | * Initialize or reset the forechannel and backchannel tables |
050047ce | 5069 | */ |
aacd5537 | 5070 | static int nfs4_setup_session_slot_tables(struct nfs4_session *ses) |
050047ce | 5071 | { |
f26468fb | 5072 | struct nfs4_slot_table *tbl; |
aacd5537 | 5073 | int status; |
050047ce | 5074 | |
aacd5537 AA |
5075 | dprintk("--> %s\n", __func__); |
5076 | /* Fore channel */ | |
5077 | tbl = &ses->fc_slot_table; | |
f26468fb | 5078 | if (tbl->slots == NULL) { |
aacd5537 AA |
5079 | status = nfs4_init_slot_table(tbl, ses->fc_attrs.max_reqs, 1); |
5080 | if (status) /* -ENOMEM */ | |
5081 | return status; | |
5082 | } else { | |
5083 | status = nfs4_reset_slot_table(tbl, ses->fc_attrs.max_reqs, 1); | |
f26468fb TM |
5084 | if (status) |
5085 | return status; | |
5086 | } | |
aacd5537 AA |
5087 | /* Back channel */ |
5088 | tbl = &ses->bc_slot_table; | |
f26468fb | 5089 | if (tbl->slots == NULL) { |
aacd5537 | 5090 | status = nfs4_init_slot_table(tbl, ses->bc_attrs.max_reqs, 0); |
f26468fb | 5091 | if (status) |
aacd5537 AA |
5092 | /* Fore and back channel share a connection so get |
5093 | * both slot tables or neither */ | |
5094 | nfs4_destroy_slot_tables(ses); | |
5095 | } else | |
5096 | status = nfs4_reset_slot_table(tbl, ses->bc_attrs.max_reqs, 0); | |
f8625a6a | 5097 | return status; |
557134a3 AA |
5098 | } |
5099 | ||
5100 | struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) | |
5101 | { | |
5102 | struct nfs4_session *session; | |
5103 | struct nfs4_slot_table *tbl; | |
5104 | ||
8535b2be | 5105 | session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); |
557134a3 AA |
5106 | if (!session) |
5107 | return NULL; | |
76db6d95 | 5108 | |
557134a3 | 5109 | tbl = &session->fc_slot_table; |
9dfdf404 | 5110 | tbl->highest_used_slotid = -1; |
557134a3 | 5111 | spin_lock_init(&tbl->slot_tbl_lock); |
689cf5c1 | 5112 | rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table"); |
42acd021 | 5113 | init_completion(&tbl->complete); |
f8625a6a RL |
5114 | |
5115 | tbl = &session->bc_slot_table; | |
9dfdf404 | 5116 | tbl->highest_used_slotid = -1; |
f8625a6a RL |
5117 | spin_lock_init(&tbl->slot_tbl_lock); |
5118 | rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table"); | |
42acd021 | 5119 | init_completion(&tbl->complete); |
f8625a6a | 5120 | |
1055d76d TM |
5121 | session->session_state = 1<<NFS4_SESSION_INITING; |
5122 | ||
557134a3 AA |
5123 | session->clp = clp; |
5124 | return session; | |
5125 | } | |
5126 | ||
5127 | void nfs4_destroy_session(struct nfs4_session *session) | |
5128 | { | |
5a0ffe54 AA |
5129 | nfs4_proc_destroy_session(session); |
5130 | dprintk("%s Destroy backchannel for xprt %p\n", | |
5131 | __func__, session->clp->cl_rpcclient->cl_xprt); | |
5132 | xprt_destroy_backchannel(session->clp->cl_rpcclient->cl_xprt, | |
5133 | NFS41_BC_MIN_CALLBACKS); | |
f8625a6a | 5134 | nfs4_destroy_slot_tables(session); |
557134a3 AA |
5135 | kfree(session); |
5136 | } | |
5137 | ||
fc931582 AA |
5138 | /* |
5139 | * Initialize the values to be used by the client in CREATE_SESSION | |
5140 | * If nfs4_init_session set the fore channel request and response sizes, | |
5141 | * use them. | |
5142 | * | |
5143 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
5144 | * always set csa_cachethis to FALSE because the current implementation | |
5145 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
5146 | */ | |
5147 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
5148 | { | |
5149 | struct nfs4_session *session = args->client->cl_session; | |
5150 | unsigned int mxrqst_sz = session->fc_attrs.max_rqst_sz, | |
5151 | mxresp_sz = session->fc_attrs.max_resp_sz; | |
5152 | ||
5153 | if (mxrqst_sz == 0) | |
5154 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
5155 | if (mxresp_sz == 0) | |
5156 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
5157 | /* Fore channel attributes */ | |
fc931582 AA |
5158 | args->fc_attrs.max_rqst_sz = mxrqst_sz; |
5159 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 AA |
5160 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
5161 | args->fc_attrs.max_reqs = session->clp->cl_rpcclient->cl_xprt->max_reqs; | |
5162 | ||
5163 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 5164 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
5165 | __func__, |
5166 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 5167 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
5168 | |
5169 | /* Back channel attributes */ | |
fc931582 AA |
5170 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
5171 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
5172 | args->bc_attrs.max_resp_sz_cached = 0; | |
5173 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
5174 | args->bc_attrs.max_reqs = 1; | |
5175 | ||
5176 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
5177 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
5178 | __func__, | |
5179 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
5180 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
5181 | args->bc_attrs.max_reqs); | |
5182 | } | |
5183 | ||
43c2e885 | 5184 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 5185 | { |
43c2e885 BF |
5186 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
5187 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
5188 | ||
43c2e885 BF |
5189 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
5190 | return -EINVAL; | |
5191 | /* | |
5192 | * Our requested max_ops is the minimum we need; we're not | |
5193 | * prepared to break up compounds into smaller pieces than that. | |
5194 | * So, no point even trying to continue if the server won't | |
5195 | * cooperate: | |
5196 | */ | |
5197 | if (rcvd->max_ops < sent->max_ops) | |
5198 | return -EINVAL; | |
5199 | if (rcvd->max_reqs == 0) | |
5200 | return -EINVAL; | |
5201 | return 0; | |
8d35301d AA |
5202 | } |
5203 | ||
43c2e885 BF |
5204 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
5205 | { | |
5206 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
5207 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 5208 | |
43c2e885 BF |
5209 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
5210 | return -EINVAL; | |
5211 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
5212 | return -EINVAL; | |
5213 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
5214 | return -EINVAL; | |
5215 | /* These would render the backchannel useless: */ | |
5216 | if (rcvd->max_ops == 0) | |
5217 | return -EINVAL; | |
5218 | if (rcvd->max_reqs == 0) | |
5219 | return -EINVAL; | |
5220 | return 0; | |
5221 | } | |
8d35301d | 5222 | |
8d35301d AA |
5223 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
5224 | struct nfs4_session *session) | |
5225 | { | |
43c2e885 | 5226 | int ret; |
8d35301d | 5227 | |
43c2e885 BF |
5228 | ret = nfs4_verify_fore_channel_attrs(args, session); |
5229 | if (ret) | |
5230 | return ret; | |
5231 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
5232 | } |
5233 | ||
fc931582 AA |
5234 | static int _nfs4_proc_create_session(struct nfs_client *clp) |
5235 | { | |
5236 | struct nfs4_session *session = clp->cl_session; | |
5237 | struct nfs41_create_session_args args = { | |
5238 | .client = clp, | |
5239 | .cb_program = NFS4_CALLBACK, | |
5240 | }; | |
5241 | struct nfs41_create_session_res res = { | |
5242 | .client = clp, | |
5243 | }; | |
5244 | struct rpc_message msg = { | |
5245 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
5246 | .rpc_argp = &args, | |
5247 | .rpc_resp = &res, | |
5248 | }; | |
5249 | int status; | |
5250 | ||
5251 | nfs4_init_channel_attrs(&args); | |
0f91421e | 5252 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 5253 | |
1bd714f2 | 5254 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
fc931582 | 5255 | |
8d35301d AA |
5256 | if (!status) |
5257 | /* Verify the session's negotiated channel_attrs values */ | |
5258 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
5259 | if (!status) { |
5260 | /* Increment the clientid slot sequence id */ | |
5261 | clp->cl_seqid++; | |
5262 | } | |
5263 | ||
5264 | return status; | |
5265 | } | |
5266 | ||
5267 | /* | |
5268 | * Issues a CREATE_SESSION operation to the server. | |
5269 | * It is the responsibility of the caller to verify the session is | |
5270 | * expired before calling this routine. | |
5271 | */ | |
f26468fb | 5272 | int nfs4_proc_create_session(struct nfs_client *clp) |
fc931582 AA |
5273 | { |
5274 | int status; | |
5275 | unsigned *ptr; | |
fc931582 AA |
5276 | struct nfs4_session *session = clp->cl_session; |
5277 | ||
5278 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
5279 | ||
fd954ae1 | 5280 | status = _nfs4_proc_create_session(clp); |
fc931582 AA |
5281 | if (status) |
5282 | goto out; | |
5283 | ||
aacd5537 AA |
5284 | /* Init or reset the session slot tables */ |
5285 | status = nfs4_setup_session_slot_tables(session); | |
5286 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
5287 | if (status) |
5288 | goto out; | |
5289 | ||
5290 | ptr = (unsigned *)&session->sess_id.data[0]; | |
5291 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
5292 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
5293 | out: |
5294 | dprintk("<-- %s\n", __func__); | |
5295 | return status; | |
5296 | } | |
5297 | ||
0f3e66c6 AA |
5298 | /* |
5299 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
5300 | * The caller must serialize access to this routine. | |
5301 | */ | |
5302 | int nfs4_proc_destroy_session(struct nfs4_session *session) | |
5303 | { | |
5304 | int status = 0; | |
5305 | struct rpc_message msg; | |
5306 | ||
5307 | dprintk("--> nfs4_proc_destroy_session\n"); | |
5308 | ||
5309 | /* session is still being setup */ | |
5310 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
5311 | return status; | |
5312 | ||
5313 | msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION]; | |
5314 | msg.rpc_argp = session; | |
5315 | msg.rpc_resp = NULL; | |
5316 | msg.rpc_cred = NULL; | |
1bd714f2 | 5317 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
0f3e66c6 AA |
5318 | |
5319 | if (status) | |
5320 | printk(KERN_WARNING | |
5321 | "Got error %d from the server on DESTROY_SESSION. " | |
5322 | "Session has been destroyed regardless...\n", status); | |
5323 | ||
5324 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
5325 | return status; | |
5326 | } | |
5327 | ||
fccba804 TM |
5328 | int nfs4_init_session(struct nfs_server *server) |
5329 | { | |
5330 | struct nfs_client *clp = server->nfs_client; | |
2449ea2e | 5331 | struct nfs4_session *session; |
68bf05ef | 5332 | unsigned int rsize, wsize; |
fccba804 TM |
5333 | int ret; |
5334 | ||
5335 | if (!nfs4_has_session(clp)) | |
5336 | return 0; | |
5337 | ||
1055d76d TM |
5338 | session = clp->cl_session; |
5339 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5340 | return 0; | |
5341 | ||
68bf05ef AA |
5342 | rsize = server->rsize; |
5343 | if (rsize == 0) | |
5344 | rsize = NFS_MAX_FILE_IO_SIZE; | |
5345 | wsize = server->wsize; | |
5346 | if (wsize == 0) | |
5347 | wsize = NFS_MAX_FILE_IO_SIZE; | |
5348 | ||
68bf05ef AA |
5349 | session->fc_attrs.max_rqst_sz = wsize + nfs41_maxwrite_overhead; |
5350 | session->fc_attrs.max_resp_sz = rsize + nfs41_maxread_overhead; | |
2449ea2e | 5351 | |
fccba804 TM |
5352 | ret = nfs4_recover_expired_lease(server); |
5353 | if (!ret) | |
5354 | ret = nfs4_check_client_ready(clp); | |
5355 | return ret; | |
5356 | } | |
5357 | ||
d83217c1 AA |
5358 | int nfs4_init_ds_session(struct nfs_client *clp) |
5359 | { | |
5360 | struct nfs4_session *session = clp->cl_session; | |
5361 | int ret; | |
5362 | ||
5363 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5364 | return 0; | |
5365 | ||
5366 | ret = nfs4_client_recover_expired_lease(clp); | |
5367 | if (!ret) | |
5368 | /* Test for the DS role */ | |
5369 | if (!is_ds_client(clp)) | |
5370 | ret = -ENODEV; | |
5371 | if (!ret) | |
5372 | ret = nfs4_check_client_ready(clp); | |
5373 | return ret; | |
5374 | ||
5375 | } | |
5376 | EXPORT_SYMBOL_GPL(nfs4_init_ds_session); | |
5377 | ||
5378 | ||
fc01cea9 AA |
5379 | /* |
5380 | * Renew the cl_session lease. | |
5381 | */ | |
d5f8d3fe TM |
5382 | struct nfs4_sequence_data { |
5383 | struct nfs_client *clp; | |
5384 | struct nfs4_sequence_args args; | |
5385 | struct nfs4_sequence_res res; | |
5386 | }; | |
5387 | ||
dc96aef9 AB |
5388 | static void nfs41_sequence_release(void *data) |
5389 | { | |
d5f8d3fe TM |
5390 | struct nfs4_sequence_data *calldata = data; |
5391 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 5392 | |
7135840f AB |
5393 | if (atomic_read(&clp->cl_count) > 1) |
5394 | nfs4_schedule_state_renewal(clp); | |
5395 | nfs_put_client(clp); | |
d5f8d3fe | 5396 | kfree(calldata); |
dc96aef9 AB |
5397 | } |
5398 | ||
aa5190d0 TM |
5399 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5400 | { | |
5401 | switch(task->tk_status) { | |
5402 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5403 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5404 | return -EAGAIN; | |
5405 | default: | |
0400a6b0 | 5406 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5407 | } |
5408 | return 0; | |
5409 | } | |
5410 | ||
dc96aef9 | 5411 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 5412 | { |
d5f8d3fe TM |
5413 | struct nfs4_sequence_data *calldata = data; |
5414 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 5415 | |
14516c3a TM |
5416 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
5417 | return; | |
fc01cea9 AA |
5418 | |
5419 | if (task->tk_status < 0) { | |
5420 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
5421 | if (atomic_read(&clp->cl_count) == 1) |
5422 | goto out; | |
fc01cea9 | 5423 | |
aa5190d0 TM |
5424 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
5425 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
5426 | return; |
5427 | } | |
5428 | } | |
fc01cea9 | 5429 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 5430 | out: |
fc01cea9 AA |
5431 | dprintk("<-- %s\n", __func__); |
5432 | } | |
5433 | ||
5434 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
5435 | { | |
d5f8d3fe TM |
5436 | struct nfs4_sequence_data *calldata = data; |
5437 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
5438 | struct nfs4_sequence_args *args; |
5439 | struct nfs4_sequence_res *res; | |
5440 | ||
fc01cea9 AA |
5441 | args = task->tk_msg.rpc_argp; |
5442 | res = task->tk_msg.rpc_resp; | |
5443 | ||
035168ab | 5444 | if (nfs41_setup_sequence(clp->cl_session, args, res, 0, task)) |
fc01cea9 AA |
5445 | return; |
5446 | rpc_call_start(task); | |
5447 | } | |
5448 | ||
5449 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
5450 | .rpc_call_done = nfs41_sequence_call_done, | |
5451 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 5452 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
5453 | }; |
5454 | ||
71ac6da9 | 5455 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) |
fc01cea9 | 5456 | { |
d5f8d3fe | 5457 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
5458 | struct rpc_message msg = { |
5459 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
5460 | .rpc_cred = cred, | |
5461 | }; | |
71ac6da9 TM |
5462 | struct rpc_task_setup task_setup_data = { |
5463 | .rpc_client = clp->cl_rpcclient, | |
5464 | .rpc_message = &msg, | |
5465 | .callback_ops = &nfs41_sequence_ops, | |
5466 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT, | |
5467 | }; | |
fc01cea9 | 5468 | |
7135840f | 5469 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 5470 | return ERR_PTR(-EIO); |
dfb4f309 | 5471 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 5472 | if (calldata == NULL) { |
7135840f | 5473 | nfs_put_client(clp); |
71ac6da9 | 5474 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 5475 | } |
d5f8d3fe TM |
5476 | msg.rpc_argp = &calldata->args; |
5477 | msg.rpc_resp = &calldata->res; | |
5478 | calldata->clp = clp; | |
71ac6da9 | 5479 | task_setup_data.callback_data = calldata; |
fc01cea9 | 5480 | |
71ac6da9 TM |
5481 | return rpc_run_task(&task_setup_data); |
5482 | } | |
5483 | ||
2f60ea6b | 5484 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
5485 | { |
5486 | struct rpc_task *task; | |
5487 | int ret = 0; | |
5488 | ||
2f60ea6b TM |
5489 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
5490 | return 0; | |
71ac6da9 TM |
5491 | task = _nfs41_proc_sequence(clp, cred); |
5492 | if (IS_ERR(task)) | |
5493 | ret = PTR_ERR(task); | |
5494 | else | |
bf294b41 | 5495 | rpc_put_task_async(task); |
71ac6da9 TM |
5496 | dprintk("<-- %s status=%d\n", __func__, ret); |
5497 | return ret; | |
5498 | } | |
5499 | ||
5500 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5501 | { | |
5502 | struct rpc_task *task; | |
5503 | int ret; | |
5504 | ||
5505 | task = _nfs41_proc_sequence(clp, cred); | |
5506 | if (IS_ERR(task)) { | |
5507 | ret = PTR_ERR(task); | |
5508 | goto out; | |
5509 | } | |
5510 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
5511 | if (!ret) { |
5512 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
5513 | ||
5514 | if (task->tk_status == 0) | |
5515 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 5516 | ret = task->tk_status; |
b4410c2f | 5517 | } |
71ac6da9 TM |
5518 | rpc_put_task(task); |
5519 | out: | |
5520 | dprintk("<-- %s status=%d\n", __func__, ret); | |
5521 | return ret; | |
fc01cea9 AA |
5522 | } |
5523 | ||
fce5c838 RL |
5524 | struct nfs4_reclaim_complete_data { |
5525 | struct nfs_client *clp; | |
5526 | struct nfs41_reclaim_complete_args arg; | |
5527 | struct nfs41_reclaim_complete_res res; | |
5528 | }; | |
5529 | ||
5530 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
5531 | { | |
5532 | struct nfs4_reclaim_complete_data *calldata = data; | |
5533 | ||
b257957e | 5534 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
035168ab TM |
5535 | if (nfs41_setup_sequence(calldata->clp->cl_session, |
5536 | &calldata->arg.seq_args, | |
fce5c838 RL |
5537 | &calldata->res.seq_res, 0, task)) |
5538 | return; | |
5539 | ||
5540 | rpc_call_start(task); | |
5541 | } | |
5542 | ||
aa5190d0 TM |
5543 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5544 | { | |
5545 | switch(task->tk_status) { | |
5546 | case 0: | |
5547 | case -NFS4ERR_COMPLETE_ALREADY: | |
5548 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
5549 | break; | |
5550 | case -NFS4ERR_DELAY: | |
aa5190d0 | 5551 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
5552 | /* fall through */ |
5553 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
5554 | return -EAGAIN; |
5555 | default: | |
0400a6b0 | 5556 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5557 | } |
5558 | return 0; | |
5559 | } | |
5560 | ||
fce5c838 RL |
5561 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
5562 | { | |
5563 | struct nfs4_reclaim_complete_data *calldata = data; | |
5564 | struct nfs_client *clp = calldata->clp; | |
5565 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
5566 | ||
5567 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5568 | if (!nfs41_sequence_done(task, res)) |
5569 | return; | |
fce5c838 | 5570 | |
aa5190d0 TM |
5571 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
5572 | rpc_restart_call_prepare(task); | |
5573 | return; | |
5574 | } | |
fce5c838 RL |
5575 | dprintk("<-- %s\n", __func__); |
5576 | } | |
5577 | ||
5578 | static void nfs4_free_reclaim_complete_data(void *data) | |
5579 | { | |
5580 | struct nfs4_reclaim_complete_data *calldata = data; | |
5581 | ||
5582 | kfree(calldata); | |
5583 | } | |
5584 | ||
5585 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
5586 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
5587 | .rpc_call_done = nfs4_reclaim_complete_done, | |
5588 | .rpc_release = nfs4_free_reclaim_complete_data, | |
5589 | }; | |
5590 | ||
5591 | /* | |
5592 | * Issue a global reclaim complete. | |
5593 | */ | |
5594 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
5595 | { | |
5596 | struct nfs4_reclaim_complete_data *calldata; | |
5597 | struct rpc_task *task; | |
5598 | struct rpc_message msg = { | |
5599 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
5600 | }; | |
5601 | struct rpc_task_setup task_setup_data = { | |
5602 | .rpc_client = clp->cl_rpcclient, | |
5603 | .rpc_message = &msg, | |
5604 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
5605 | .flags = RPC_TASK_ASYNC, | |
5606 | }; | |
5607 | int status = -ENOMEM; | |
5608 | ||
5609 | dprintk("--> %s\n", __func__); | |
8535b2be | 5610 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
5611 | if (calldata == NULL) |
5612 | goto out; | |
5613 | calldata->clp = clp; | |
5614 | calldata->arg.one_fs = 0; | |
fce5c838 RL |
5615 | |
5616 | msg.rpc_argp = &calldata->arg; | |
5617 | msg.rpc_resp = &calldata->res; | |
5618 | task_setup_data.callback_data = calldata; | |
5619 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 5620 | if (IS_ERR(task)) { |
fce5c838 | 5621 | status = PTR_ERR(task); |
acf82b85 DC |
5622 | goto out; |
5623 | } | |
c34c32ea AA |
5624 | status = nfs4_wait_for_completion_rpc_task(task); |
5625 | if (status == 0) | |
5626 | status = task->tk_status; | |
fce5c838 | 5627 | rpc_put_task(task); |
acf82b85 | 5628 | return 0; |
fce5c838 RL |
5629 | out: |
5630 | dprintk("<-- %s status=%d\n", __func__, status); | |
5631 | return status; | |
5632 | } | |
b1f69b75 AA |
5633 | |
5634 | static void | |
5635 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
5636 | { | |
5637 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 5638 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
b1f69b75 AA |
5639 | |
5640 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
5641 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
5642 | * right now covering the LAYOUTGET we are about to send. | |
5643 | * However, that is not so catastrophic, and there seems | |
5644 | * to be no way to prevent it completely. | |
5645 | */ | |
b1f69b75 AA |
5646 | if (nfs4_setup_sequence(server, &lgp->args.seq_args, |
5647 | &lgp->res.seq_res, 0, task)) | |
5648 | return; | |
cf7d63f1 FI |
5649 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
5650 | NFS_I(lgp->args.inode)->layout, | |
5651 | lgp->args.ctx->state)) { | |
5652 | rpc_exit(task, NFS4_OK); | |
5653 | return; | |
5654 | } | |
b1f69b75 AA |
5655 | rpc_call_start(task); |
5656 | } | |
5657 | ||
5658 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
5659 | { | |
5660 | struct nfs4_layoutget *lgp = calldata; | |
5661 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5662 | ||
5663 | dprintk("--> %s\n", __func__); | |
5664 | ||
5665 | if (!nfs4_sequence_done(task, &lgp->res.seq_res)) | |
5666 | return; | |
5667 | ||
5668 | switch (task->tk_status) { | |
5669 | case 0: | |
5670 | break; | |
5671 | case -NFS4ERR_LAYOUTTRYLATER: | |
5672 | case -NFS4ERR_RECALLCONFLICT: | |
5673 | task->tk_status = -NFS4ERR_DELAY; | |
5674 | /* Fall through */ | |
5675 | default: | |
5676 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
5677 | rpc_restart_call_prepare(task); | |
5678 | return; | |
5679 | } | |
5680 | } | |
b1f69b75 AA |
5681 | dprintk("<-- %s\n", __func__); |
5682 | } | |
5683 | ||
5684 | static void nfs4_layoutget_release(void *calldata) | |
5685 | { | |
5686 | struct nfs4_layoutget *lgp = calldata; | |
5687 | ||
5688 | dprintk("--> %s\n", __func__); | |
b1f69b75 AA |
5689 | put_nfs_open_context(lgp->args.ctx); |
5690 | kfree(calldata); | |
5691 | dprintk("<-- %s\n", __func__); | |
5692 | } | |
5693 | ||
5694 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
5695 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
5696 | .rpc_call_done = nfs4_layoutget_done, | |
5697 | .rpc_release = nfs4_layoutget_release, | |
5698 | }; | |
5699 | ||
5700 | int nfs4_proc_layoutget(struct nfs4_layoutget *lgp) | |
5701 | { | |
5702 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5703 | struct rpc_task *task; | |
5704 | struct rpc_message msg = { | |
5705 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
5706 | .rpc_argp = &lgp->args, | |
5707 | .rpc_resp = &lgp->res, | |
5708 | }; | |
5709 | struct rpc_task_setup task_setup_data = { | |
5710 | .rpc_client = server->client, | |
5711 | .rpc_message = &msg, | |
5712 | .callback_ops = &nfs4_layoutget_call_ops, | |
5713 | .callback_data = lgp, | |
5714 | .flags = RPC_TASK_ASYNC, | |
5715 | }; | |
5716 | int status = 0; | |
5717 | ||
5718 | dprintk("--> %s\n", __func__); | |
5719 | ||
35124a09 | 5720 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 AA |
5721 | lgp->res.seq_res.sr_slot = NULL; |
5722 | task = rpc_run_task(&task_setup_data); | |
5723 | if (IS_ERR(task)) | |
5724 | return PTR_ERR(task); | |
5725 | status = nfs4_wait_for_completion_rpc_task(task); | |
c31663d4 FI |
5726 | if (status == 0) |
5727 | status = task->tk_status; | |
5728 | if (status == 0) | |
5729 | status = pnfs_layout_process(lgp); | |
b1f69b75 AA |
5730 | rpc_put_task(task); |
5731 | dprintk("<-- %s status=%d\n", __func__, status); | |
5732 | return status; | |
5733 | } | |
5734 | ||
cbe82603 BH |
5735 | static void |
5736 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
5737 | { | |
5738 | struct nfs4_layoutreturn *lrp = calldata; | |
5739 | ||
5740 | dprintk("--> %s\n", __func__); | |
5741 | if (nfs41_setup_sequence(lrp->clp->cl_session, &lrp->args.seq_args, | |
5742 | &lrp->res.seq_res, 0, task)) | |
5743 | return; | |
5744 | rpc_call_start(task); | |
5745 | } | |
5746 | ||
5747 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
5748 | { | |
5749 | struct nfs4_layoutreturn *lrp = calldata; | |
5750 | struct nfs_server *server; | |
a56aaa02 | 5751 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
5752 | |
5753 | dprintk("--> %s\n", __func__); | |
5754 | ||
5755 | if (!nfs4_sequence_done(task, &lrp->res.seq_res)) | |
5756 | return; | |
5757 | ||
5758 | server = NFS_SERVER(lrp->args.inode); | |
5759 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 5760 | rpc_restart_call_prepare(task); |
cbe82603 BH |
5761 | return; |
5762 | } | |
a2e1d4f2 | 5763 | spin_lock(&lo->plh_inode->i_lock); |
cbe82603 | 5764 | if (task->tk_status == 0) { |
cbe82603 | 5765 | if (lrp->res.lrs_present) { |
cbe82603 | 5766 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); |
cbe82603 BH |
5767 | } else |
5768 | BUG_ON(!list_empty(&lo->plh_segs)); | |
5769 | } | |
a2e1d4f2 FI |
5770 | lo->plh_block_lgets--; |
5771 | spin_unlock(&lo->plh_inode->i_lock); | |
cbe82603 BH |
5772 | dprintk("<-- %s\n", __func__); |
5773 | } | |
5774 | ||
5775 | static void nfs4_layoutreturn_release(void *calldata) | |
5776 | { | |
5777 | struct nfs4_layoutreturn *lrp = calldata; | |
5778 | ||
5779 | dprintk("--> %s\n", __func__); | |
a56aaa02 | 5780 | put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
5781 | kfree(calldata); |
5782 | dprintk("<-- %s\n", __func__); | |
5783 | } | |
5784 | ||
5785 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
5786 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
5787 | .rpc_call_done = nfs4_layoutreturn_done, | |
5788 | .rpc_release = nfs4_layoutreturn_release, | |
5789 | }; | |
5790 | ||
5791 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
5792 | { | |
5793 | struct rpc_task *task; | |
5794 | struct rpc_message msg = { | |
5795 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
5796 | .rpc_argp = &lrp->args, | |
5797 | .rpc_resp = &lrp->res, | |
5798 | }; | |
5799 | struct rpc_task_setup task_setup_data = { | |
5800 | .rpc_client = lrp->clp->cl_rpcclient, | |
5801 | .rpc_message = &msg, | |
5802 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
5803 | .callback_data = lrp, | |
5804 | }; | |
5805 | int status; | |
5806 | ||
5807 | dprintk("--> %s\n", __func__); | |
5808 | task = rpc_run_task(&task_setup_data); | |
5809 | if (IS_ERR(task)) | |
5810 | return PTR_ERR(task); | |
5811 | status = task->tk_status; | |
5812 | dprintk("<-- %s status=%d\n", __func__, status); | |
5813 | rpc_put_task(task); | |
5814 | return status; | |
5815 | } | |
5816 | ||
7f11d8d3 AA |
5817 | /* |
5818 | * Retrieve the list of Data Server devices from the MDS. | |
5819 | */ | |
5820 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
5821 | const struct nfs_fh *fh, | |
5822 | struct pnfs_devicelist *devlist) | |
5823 | { | |
5824 | struct nfs4_getdevicelist_args args = { | |
5825 | .fh = fh, | |
5826 | .layoutclass = server->pnfs_curr_ld->id, | |
5827 | }; | |
5828 | struct nfs4_getdevicelist_res res = { | |
5829 | .devlist = devlist, | |
5830 | }; | |
5831 | struct rpc_message msg = { | |
5832 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
5833 | .rpc_argp = &args, | |
5834 | .rpc_resp = &res, | |
5835 | }; | |
5836 | int status; | |
5837 | ||
5838 | dprintk("--> %s\n", __func__); | |
5839 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
5840 | &res.seq_res, 0); | |
5841 | dprintk("<-- %s status=%d\n", __func__, status); | |
5842 | return status; | |
5843 | } | |
5844 | ||
5845 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
5846 | const struct nfs_fh *fh, | |
5847 | struct pnfs_devicelist *devlist) | |
5848 | { | |
5849 | struct nfs4_exception exception = { }; | |
5850 | int err; | |
5851 | ||
5852 | do { | |
5853 | err = nfs4_handle_exception(server, | |
5854 | _nfs4_getdevicelist(server, fh, devlist), | |
5855 | &exception); | |
5856 | } while (exception.retry); | |
5857 | ||
5858 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
5859 | err, devlist->num_devs); | |
5860 | ||
5861 | return err; | |
5862 | } | |
5863 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
5864 | ||
b1f69b75 AA |
5865 | static int |
5866 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
5867 | { | |
5868 | struct nfs4_getdeviceinfo_args args = { | |
5869 | .pdev = pdev, | |
5870 | }; | |
5871 | struct nfs4_getdeviceinfo_res res = { | |
5872 | .pdev = pdev, | |
5873 | }; | |
5874 | struct rpc_message msg = { | |
5875 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
5876 | .rpc_argp = &args, | |
5877 | .rpc_resp = &res, | |
5878 | }; | |
5879 | int status; | |
5880 | ||
5881 | dprintk("--> %s\n", __func__); | |
7c513058 | 5882 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
5883 | dprintk("<-- %s status=%d\n", __func__, status); |
5884 | ||
5885 | return status; | |
5886 | } | |
5887 | ||
5888 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
5889 | { | |
5890 | struct nfs4_exception exception = { }; | |
5891 | int err; | |
5892 | ||
5893 | do { | |
5894 | err = nfs4_handle_exception(server, | |
5895 | _nfs4_proc_getdeviceinfo(server, pdev), | |
5896 | &exception); | |
5897 | } while (exception.retry); | |
5898 | return err; | |
5899 | } | |
5900 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
5901 | ||
863a3c6c AA |
5902 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
5903 | { | |
5904 | struct nfs4_layoutcommit_data *data = calldata; | |
5905 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
5906 | ||
5907 | if (nfs4_setup_sequence(server, &data->args.seq_args, | |
5908 | &data->res.seq_res, 1, task)) | |
5909 | return; | |
5910 | rpc_call_start(task); | |
5911 | } | |
5912 | ||
5913 | static void | |
5914 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
5915 | { | |
5916 | struct nfs4_layoutcommit_data *data = calldata; | |
5917 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
5918 | ||
5919 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
5920 | return; | |
5921 | ||
5922 | switch (task->tk_status) { /* Just ignore these failures */ | |
5923 | case NFS4ERR_DELEG_REVOKED: /* layout was recalled */ | |
5924 | case NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
5925 | case NFS4ERR_BADLAYOUT: /* no layout */ | |
5926 | case NFS4ERR_GRACE: /* loca_recalim always false */ | |
5927 | task->tk_status = 0; | |
5928 | } | |
5929 | ||
5930 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 5931 | rpc_restart_call_prepare(task); |
863a3c6c AA |
5932 | return; |
5933 | } | |
5934 | ||
5935 | if (task->tk_status == 0) | |
5936 | nfs_post_op_update_inode_force_wcc(data->args.inode, | |
5937 | data->res.fattr); | |
5938 | } | |
5939 | ||
5940 | static void nfs4_layoutcommit_release(void *calldata) | |
5941 | { | |
5942 | struct nfs4_layoutcommit_data *data = calldata; | |
a9bae566 | 5943 | struct pnfs_layout_segment *lseg, *tmp; |
92407e75 | 5944 | unsigned long *bitlock = &NFS_I(data->args.inode)->flags; |
863a3c6c | 5945 | |
db29c089 | 5946 | pnfs_cleanup_layoutcommit(data); |
863a3c6c | 5947 | /* Matched by references in pnfs_set_layoutcommit */ |
a9bae566 PT |
5948 | list_for_each_entry_safe(lseg, tmp, &data->lseg_list, pls_lc_list) { |
5949 | list_del_init(&lseg->pls_lc_list); | |
5950 | if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT, | |
5951 | &lseg->pls_flags)) | |
5952 | put_lseg(lseg); | |
5953 | } | |
92407e75 PT |
5954 | |
5955 | clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING, bitlock); | |
5956 | smp_mb__after_clear_bit(); | |
5957 | wake_up_bit(bitlock, NFS_INO_LAYOUTCOMMITTING); | |
5958 | ||
863a3c6c AA |
5959 | put_rpccred(data->cred); |
5960 | kfree(data); | |
5961 | } | |
5962 | ||
5963 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
5964 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
5965 | .rpc_call_done = nfs4_layoutcommit_done, | |
5966 | .rpc_release = nfs4_layoutcommit_release, | |
5967 | }; | |
5968 | ||
5969 | int | |
ef311537 | 5970 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
5971 | { |
5972 | struct rpc_message msg = { | |
5973 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
5974 | .rpc_argp = &data->args, | |
5975 | .rpc_resp = &data->res, | |
5976 | .rpc_cred = data->cred, | |
5977 | }; | |
5978 | struct rpc_task_setup task_setup_data = { | |
5979 | .task = &data->task, | |
5980 | .rpc_client = NFS_CLIENT(data->args.inode), | |
5981 | .rpc_message = &msg, | |
5982 | .callback_ops = &nfs4_layoutcommit_ops, | |
5983 | .callback_data = data, | |
5984 | .flags = RPC_TASK_ASYNC, | |
5985 | }; | |
5986 | struct rpc_task *task; | |
5987 | int status = 0; | |
5988 | ||
5989 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
5990 | "lbw: %llu inode %lu\n", | |
5991 | data->task.tk_pid, sync, | |
5992 | data->args.lastbytewritten, | |
5993 | data->args.inode->i_ino); | |
5994 | ||
5995 | task = rpc_run_task(&task_setup_data); | |
5996 | if (IS_ERR(task)) | |
5997 | return PTR_ERR(task); | |
ef311537 | 5998 | if (sync == false) |
863a3c6c AA |
5999 | goto out; |
6000 | status = nfs4_wait_for_completion_rpc_task(task); | |
6001 | if (status != 0) | |
6002 | goto out; | |
6003 | status = task->tk_status; | |
6004 | out: | |
6005 | dprintk("%s: status %d\n", __func__, status); | |
6006 | rpc_put_task(task); | |
6007 | return status; | |
6008 | } | |
fca78d6d BS |
6009 | |
6010 | static int | |
6011 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6012 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6013 | { | |
6014 | struct nfs41_secinfo_no_name_args args = { | |
6015 | .style = SECINFO_STYLE_CURRENT_FH, | |
6016 | }; | |
6017 | struct nfs4_secinfo_res res = { | |
6018 | .flavors = flavors, | |
6019 | }; | |
6020 | struct rpc_message msg = { | |
6021 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
6022 | .rpc_argp = &args, | |
6023 | .rpc_resp = &res, | |
6024 | }; | |
6025 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); | |
6026 | } | |
6027 | ||
6028 | static int | |
6029 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6030 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6031 | { | |
6032 | struct nfs4_exception exception = { }; | |
6033 | int err; | |
6034 | do { | |
6035 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6036 | switch (err) { | |
6037 | case 0: | |
6038 | case -NFS4ERR_WRONGSEC: | |
6039 | case -NFS4ERR_NOTSUPP: | |
6040 | break; | |
6041 | default: | |
6042 | err = nfs4_handle_exception(server, err, &exception); | |
6043 | } | |
6044 | } while (exception.retry); | |
6045 | return err; | |
6046 | } | |
6047 | ||
6048 | static int | |
6049 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
6050 | struct nfs_fsinfo *info) | |
6051 | { | |
6052 | int err; | |
6053 | struct page *page; | |
6054 | rpc_authflavor_t flavor; | |
6055 | struct nfs4_secinfo_flavors *flavors; | |
6056 | ||
6057 | page = alloc_page(GFP_KERNEL); | |
6058 | if (!page) { | |
6059 | err = -ENOMEM; | |
6060 | goto out; | |
6061 | } | |
6062 | ||
6063 | flavors = page_address(page); | |
6064 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6065 | ||
6066 | /* | |
6067 | * Fall back on "guess and check" method if | |
6068 | * the server doesn't support SECINFO_NO_NAME | |
6069 | */ | |
6070 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
6071 | err = nfs4_find_root_sec(server, fhandle, info); | |
6072 | goto out_freepage; | |
6073 | } | |
6074 | if (err) | |
6075 | goto out_freepage; | |
6076 | ||
6077 | flavor = nfs_find_best_sec(flavors); | |
6078 | if (err == 0) | |
6079 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
6080 | ||
6081 | out_freepage: | |
6082 | put_page(page); | |
6083 | if (err == -EACCES) | |
6084 | return -EPERM; | |
6085 | out: | |
6086 | return err; | |
6087 | } | |
7d974794 BS |
6088 | static int _nfs41_test_stateid(struct nfs_server *server, struct nfs4_state *state) |
6089 | { | |
6090 | int status; | |
6091 | struct nfs41_test_stateid_args args = { | |
6092 | .stateid = &state->stateid, | |
6093 | }; | |
6094 | struct nfs41_test_stateid_res res; | |
6095 | struct rpc_message msg = { | |
6096 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
6097 | .rpc_argp = &args, | |
6098 | .rpc_resp = &res, | |
6099 | }; | |
6100 | args.seq_args.sa_session = res.seq_res.sr_session = NULL; | |
6101 | status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 0, 1); | |
6102 | return status; | |
6103 | } | |
6104 | ||
6105 | static int nfs41_test_stateid(struct nfs_server *server, struct nfs4_state *state) | |
6106 | { | |
6107 | struct nfs4_exception exception = { }; | |
6108 | int err; | |
6109 | do { | |
6110 | err = nfs4_handle_exception(server, | |
6111 | _nfs41_test_stateid(server, state), | |
6112 | &exception); | |
6113 | } while (exception.retry); | |
6114 | return err; | |
6115 | } | |
9aeda35f BS |
6116 | |
6117 | static int _nfs4_free_stateid(struct nfs_server *server, struct nfs4_state *state) | |
6118 | { | |
6119 | int status; | |
6120 | struct nfs41_free_stateid_args args = { | |
6121 | .stateid = &state->stateid, | |
6122 | }; | |
6123 | struct nfs41_free_stateid_res res; | |
6124 | struct rpc_message msg = { | |
6125 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
6126 | .rpc_argp = &args, | |
6127 | .rpc_resp = &res, | |
6128 | }; | |
6129 | ||
6130 | args.seq_args.sa_session = res.seq_res.sr_session = NULL; | |
6131 | status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 0, 1); | |
6132 | return status; | |
6133 | } | |
6134 | ||
6135 | static int nfs41_free_stateid(struct nfs_server *server, struct nfs4_state *state) | |
6136 | { | |
6137 | struct nfs4_exception exception = { }; | |
6138 | int err; | |
6139 | do { | |
6140 | err = nfs4_handle_exception(server, | |
6141 | _nfs4_free_stateid(server, state), | |
6142 | &exception); | |
6143 | } while (exception.retry); | |
6144 | return err; | |
6145 | } | |
557134a3 AA |
6146 | #endif /* CONFIG_NFS_V4_1 */ |
6147 | ||
591d71cb | 6148 | struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 6149 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 6150 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
6151 | .recover_open = nfs4_open_reclaim, |
6152 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 6153 | .establish_clid = nfs4_init_clientid, |
90a16617 | 6154 | .get_clid_cred = nfs4_get_setclientid_cred, |
1da177e4 LT |
6155 | }; |
6156 | ||
591d71cb AA |
6157 | #if defined(CONFIG_NFS_V4_1) |
6158 | struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { | |
6159 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, | |
6160 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
6161 | .recover_open = nfs4_open_reclaim, | |
6162 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 6163 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6164 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 6165 | .reclaim_complete = nfs41_proc_reclaim_complete, |
591d71cb AA |
6166 | }; |
6167 | #endif /* CONFIG_NFS_V4_1 */ | |
6168 | ||
6169 | struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { | |
6170 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, | |
6171 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
6172 | .recover_open = nfs4_open_expired, | |
6173 | .recover_lock = nfs4_lock_expired, | |
6174 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 6175 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
6176 | }; |
6177 | ||
6178 | #if defined(CONFIG_NFS_V4_1) | |
6179 | struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { | |
7eff03ae | 6180 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 6181 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
6182 | .recover_open = nfs41_open_expired, |
6183 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 6184 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6185 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 6186 | }; |
591d71cb | 6187 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 6188 | |
29fba38b BH |
6189 | struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
6190 | .sched_state_renewal = nfs4_proc_async_renew, | |
a7b72103 | 6191 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 6192 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
6193 | }; |
6194 | ||
6195 | #if defined(CONFIG_NFS_V4_1) | |
6196 | struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { | |
6197 | .sched_state_renewal = nfs41_proc_async_sequence, | |
a7b72103 | 6198 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 6199 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
6200 | }; |
6201 | #endif | |
6202 | ||
97dc1359 TM |
6203 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
6204 | .minor_version = 0, | |
6205 | .call_sync = _nfs4_call_sync, | |
e047a10c | 6206 | .validate_stateid = nfs4_validate_delegation_stateid, |
fca78d6d | 6207 | .find_root_sec = nfs4_find_root_sec, |
c48f4f35 TM |
6208 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
6209 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
6210 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
6211 | }; |
6212 | ||
6213 | #if defined(CONFIG_NFS_V4_1) | |
6214 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
6215 | .minor_version = 1, | |
6216 | .call_sync = _nfs4_call_sync_session, | |
e047a10c | 6217 | .validate_stateid = nfs41_validate_delegation_stateid, |
fca78d6d | 6218 | .find_root_sec = nfs41_find_root_sec, |
c48f4f35 TM |
6219 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
6220 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
6221 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
6222 | }; |
6223 | #endif | |
6224 | ||
97dc1359 TM |
6225 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
6226 | [0] = &nfs_v4_0_minor_ops, | |
6227 | #if defined(CONFIG_NFS_V4_1) | |
6228 | [1] = &nfs_v4_1_minor_ops, | |
6229 | #endif | |
6230 | }; | |
6231 | ||
92e1d5be | 6232 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
6233 | .permission = nfs_permission, |
6234 | .getattr = nfs_getattr, | |
6235 | .setattr = nfs_setattr, | |
64c2ce8b AK |
6236 | .getxattr = generic_getxattr, |
6237 | .setxattr = generic_setxattr, | |
6238 | .listxattr = generic_listxattr, | |
6239 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
6240 | }; |
6241 | ||
509de811 | 6242 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
6243 | .version = 4, /* protocol version */ |
6244 | .dentry_ops = &nfs4_dentry_operations, | |
6245 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 6246 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 6247 | .file_ops = &nfs4_file_operations, |
1da177e4 LT |
6248 | .getroot = nfs4_proc_get_root, |
6249 | .getattr = nfs4_proc_getattr, | |
6250 | .setattr = nfs4_proc_setattr, | |
6251 | .lookup = nfs4_proc_lookup, | |
6252 | .access = nfs4_proc_access, | |
6253 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
6254 | .create = nfs4_proc_create, |
6255 | .remove = nfs4_proc_remove, | |
6256 | .unlink_setup = nfs4_proc_unlink_setup, | |
6257 | .unlink_done = nfs4_proc_unlink_done, | |
6258 | .rename = nfs4_proc_rename, | |
d3d4152a JL |
6259 | .rename_setup = nfs4_proc_rename_setup, |
6260 | .rename_done = nfs4_proc_rename_done, | |
1da177e4 LT |
6261 | .link = nfs4_proc_link, |
6262 | .symlink = nfs4_proc_symlink, | |
6263 | .mkdir = nfs4_proc_mkdir, | |
6264 | .rmdir = nfs4_proc_remove, | |
6265 | .readdir = nfs4_proc_readdir, | |
6266 | .mknod = nfs4_proc_mknod, | |
6267 | .statfs = nfs4_proc_statfs, | |
6268 | .fsinfo = nfs4_proc_fsinfo, | |
6269 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 6270 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
6271 | .decode_dirent = nfs4_decode_dirent, |
6272 | .read_setup = nfs4_proc_read_setup, | |
ec06c096 | 6273 | .read_done = nfs4_read_done, |
1da177e4 | 6274 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 6275 | .write_done = nfs4_write_done, |
1da177e4 | 6276 | .commit_setup = nfs4_proc_commit_setup, |
788e7a89 | 6277 | .commit_done = nfs4_commit_done, |
1da177e4 | 6278 | .lock = nfs4_proc_lock, |
e50a1c2e | 6279 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 6280 | .close_context = nfs4_close_context, |
2b484297 | 6281 | .open_context = nfs4_atomic_open, |
45a52a02 | 6282 | .init_client = nfs4_init_client, |
5a5ea0d4 | 6283 | .secinfo = nfs4_proc_secinfo, |
1da177e4 LT |
6284 | }; |
6285 | ||
64c2ce8b AK |
6286 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
6287 | .prefix = XATTR_NAME_NFSV4_ACL, | |
6288 | .list = nfs4_xattr_list_nfs4_acl, | |
6289 | .get = nfs4_xattr_get_nfs4_acl, | |
6290 | .set = nfs4_xattr_set_nfs4_acl, | |
6291 | }; | |
6292 | ||
6293 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
6294 | &nfs4_xattr_nfs4_acl_handler, | |
6295 | NULL | |
6296 | }; | |
6297 | ||
1da177e4 LT |
6298 | /* |
6299 | * Local variables: | |
6300 | * c-basic-offset: 8 | |
6301 | * End: | |
6302 | */ |