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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/nfs/nfs4proc.c | |
3 | * | |
4 | * Client-side procedure declarations for NFSv4. | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
36 | */ | |
37 | ||
38 | #include <linux/mm.h> | |
1da177e4 LT |
39 | #include <linux/delay.h> |
40 | #include <linux/errno.h> | |
41 | #include <linux/string.h> | |
652f89f6 TM |
42 | #include <linux/ratelimit.h> |
43 | #include <linux/printk.h> | |
5a0e3ad6 | 44 | #include <linux/slab.h> |
1da177e4 | 45 | #include <linux/sunrpc/clnt.h> |
8f70e95f | 46 | #include <linux/sunrpc/gss_api.h> |
1da177e4 LT |
47 | #include <linux/nfs.h> |
48 | #include <linux/nfs4.h> | |
49 | #include <linux/nfs_fs.h> | |
50 | #include <linux/nfs_page.h> | |
9b7160c5 | 51 | #include <linux/nfs_mount.h> |
1da177e4 | 52 | #include <linux/namei.h> |
02a913a7 | 53 | #include <linux/mount.h> |
99fe60d0 | 54 | #include <linux/module.h> |
6926afd1 | 55 | #include <linux/nfs_idmap.h> |
5a0ffe54 | 56 | #include <linux/sunrpc/bc_xprt.h> |
64c2ce8b | 57 | #include <linux/xattr.h> |
c7a360b0 | 58 | #include <linux/utsname.h> |
d310310c | 59 | #include <linux/freezer.h> |
1da177e4 | 60 | |
4ce79717 | 61 | #include "nfs4_fs.h" |
1da177e4 | 62 | #include "delegation.h" |
101070ca | 63 | #include "internal.h" |
006ea73e | 64 | #include "iostat.h" |
fc931582 | 65 | #include "callback.h" |
b1f69b75 | 66 | #include "pnfs.h" |
1da177e4 LT |
67 | |
68 | #define NFSDBG_FACILITY NFSDBG_PROC | |
69 | ||
2066fe89 | 70 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
71 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
72 | ||
a78cb57a TM |
73 | #define NFS4_MAX_LOOP_ON_RECOVER (10) |
74 | ||
cdd4e68b | 75 | struct nfs4_opendata; |
864472e9 | 76 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
b257957e | 77 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data); |
1da177e4 | 78 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
9e33bed5 | 79 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *); |
9936781d | 80 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr); |
0ab64e0e TM |
81 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
82 | struct nfs_fattr *fattr, struct iattr *sattr, | |
83 | struct nfs4_state *state); | |
f062eb6c BS |
84 | #ifdef CONFIG_NFS_V4_1 |
85 | static int nfs41_test_stateid(struct nfs_server *, struct nfs4_state *); | |
86 | static int nfs41_free_stateid(struct nfs_server *, struct nfs4_state *); | |
87 | #endif | |
1da177e4 | 88 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 89 | static int nfs4_map_errors(int err) |
1da177e4 | 90 | { |
52567b03 TM |
91 | if (err >= -1000) |
92 | return err; | |
93 | switch (err) { | |
94 | case -NFS4ERR_RESOURCE: | |
95 | return -EREMOTEIO; | |
7ebb9315 BS |
96 | case -NFS4ERR_WRONGSEC: |
97 | return -EPERM; | |
3ddeb7c5 TM |
98 | case -NFS4ERR_BADOWNER: |
99 | case -NFS4ERR_BADNAME: | |
100 | return -EINVAL; | |
52567b03 | 101 | default: |
1da177e4 | 102 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 103 | __func__, -err); |
52567b03 | 104 | break; |
1da177e4 | 105 | } |
52567b03 | 106 | return -EIO; |
1da177e4 LT |
107 | } |
108 | ||
109 | /* | |
110 | * This is our standard bitmap for GETATTR requests. | |
111 | */ | |
112 | const u32 nfs4_fattr_bitmap[2] = { | |
113 | FATTR4_WORD0_TYPE | |
114 | | FATTR4_WORD0_CHANGE | |
115 | | FATTR4_WORD0_SIZE | |
116 | | FATTR4_WORD0_FSID | |
117 | | FATTR4_WORD0_FILEID, | |
118 | FATTR4_WORD1_MODE | |
119 | | FATTR4_WORD1_NUMLINKS | |
120 | | FATTR4_WORD1_OWNER | |
121 | | FATTR4_WORD1_OWNER_GROUP | |
122 | | FATTR4_WORD1_RAWDEV | |
123 | | FATTR4_WORD1_SPACE_USED | |
124 | | FATTR4_WORD1_TIME_ACCESS | |
125 | | FATTR4_WORD1_TIME_METADATA | |
126 | | FATTR4_WORD1_TIME_MODIFY | |
127 | }; | |
128 | ||
129 | const u32 nfs4_statfs_bitmap[2] = { | |
130 | FATTR4_WORD0_FILES_AVAIL | |
131 | | FATTR4_WORD0_FILES_FREE | |
132 | | FATTR4_WORD0_FILES_TOTAL, | |
133 | FATTR4_WORD1_SPACE_AVAIL | |
134 | | FATTR4_WORD1_SPACE_FREE | |
135 | | FATTR4_WORD1_SPACE_TOTAL | |
136 | }; | |
137 | ||
4ce79717 | 138 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
139 | FATTR4_WORD0_MAXLINK |
140 | | FATTR4_WORD0_MAXNAME, | |
141 | 0 | |
142 | }; | |
143 | ||
dae100c2 | 144 | const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE |
1da177e4 LT |
145 | | FATTR4_WORD0_MAXREAD |
146 | | FATTR4_WORD0_MAXWRITE | |
147 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 148 | FATTR4_WORD1_TIME_DELTA |
dae100c2 FI |
149 | | FATTR4_WORD1_FS_LAYOUT_TYPES, |
150 | FATTR4_WORD2_LAYOUT_BLKSIZE | |
1da177e4 LT |
151 | }; |
152 | ||
830b8e33 MN |
153 | const u32 nfs4_fs_locations_bitmap[2] = { |
154 | FATTR4_WORD0_TYPE | |
155 | | FATTR4_WORD0_CHANGE | |
156 | | FATTR4_WORD0_SIZE | |
157 | | FATTR4_WORD0_FSID | |
158 | | FATTR4_WORD0_FILEID | |
159 | | FATTR4_WORD0_FS_LOCATIONS, | |
160 | FATTR4_WORD1_MODE | |
161 | | FATTR4_WORD1_NUMLINKS | |
162 | | FATTR4_WORD1_OWNER | |
163 | | FATTR4_WORD1_OWNER_GROUP | |
164 | | FATTR4_WORD1_RAWDEV | |
165 | | FATTR4_WORD1_SPACE_USED | |
166 | | FATTR4_WORD1_TIME_ACCESS | |
167 | | FATTR4_WORD1_TIME_METADATA | |
168 | | FATTR4_WORD1_TIME_MODIFY | |
169 | | FATTR4_WORD1_MOUNTED_ON_FILEID | |
170 | }; | |
171 | ||
bc4785cd | 172 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
173 | struct nfs4_readdir_arg *readdir) |
174 | { | |
0dbb4c67 | 175 | __be32 *start, *p; |
1da177e4 LT |
176 | |
177 | BUG_ON(readdir->count < 80); | |
178 | if (cookie > 2) { | |
b7ef1956 | 179 | readdir->cookie = cookie; |
1da177e4 LT |
180 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
181 | return; | |
182 | } | |
183 | ||
184 | readdir->cookie = 0; | |
185 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
186 | if (cookie == 2) | |
187 | return; | |
188 | ||
189 | /* | |
190 | * NFSv4 servers do not return entries for '.' and '..' | |
191 | * Therefore, we fake these entries here. We let '.' | |
192 | * have cookie 0 and '..' have cookie 1. Note that | |
193 | * when talking to the server, we always send cookie 0 | |
194 | * instead of 1 or 2. | |
195 | */ | |
0dbb4c67 | 196 | start = p = kmap_atomic(*readdir->pages, KM_USER0); |
1da177e4 LT |
197 | |
198 | if (cookie == 0) { | |
199 | *p++ = xdr_one; /* next */ | |
200 | *p++ = xdr_zero; /* cookie, first word */ | |
201 | *p++ = xdr_one; /* cookie, second word */ | |
202 | *p++ = xdr_one; /* entry len */ | |
203 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
204 | p++; | |
205 | *p++ = xdr_one; /* bitmap length */ | |
206 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
207 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 208 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
209 | } |
210 | ||
211 | *p++ = xdr_one; /* next */ | |
212 | *p++ = xdr_zero; /* cookie, first word */ | |
213 | *p++ = xdr_two; /* cookie, second word */ | |
214 | *p++ = xdr_two; /* entry len */ | |
215 | memcpy(p, "..\0\0", 4); /* entry */ | |
216 | p++; | |
217 | *p++ = xdr_one; /* bitmap length */ | |
218 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
219 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 220 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
221 | |
222 | readdir->pgbase = (char *)p - (char *)start; | |
223 | readdir->count -= readdir->pgbase; | |
224 | kunmap_atomic(start, KM_USER0); | |
225 | } | |
226 | ||
65de872e TM |
227 | static int nfs4_wait_clnt_recover(struct nfs_client *clp) |
228 | { | |
229 | int res; | |
230 | ||
231 | might_sleep(); | |
232 | ||
e005e804 | 233 | res = wait_on_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING, |
72cb77f4 | 234 | nfs_wait_bit_killable, TASK_KILLABLE); |
65de872e TM |
235 | return res; |
236 | } | |
237 | ||
238 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) | |
239 | { | |
240 | int res = 0; | |
241 | ||
242 | might_sleep(); | |
243 | ||
244 | if (*timeout <= 0) | |
245 | *timeout = NFS4_POLL_RETRY_MIN; | |
246 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
247 | *timeout = NFS4_POLL_RETRY_MAX; | |
d310310c | 248 | freezable_schedule_timeout_killable(*timeout); |
65de872e TM |
249 | if (fatal_signal_pending(current)) |
250 | res = -ERESTARTSYS; | |
251 | *timeout <<= 1; | |
252 | return res; | |
253 | } | |
254 | ||
255 | /* This is the error handling routine for processes that are allowed | |
256 | * to sleep. | |
257 | */ | |
b064eca2 | 258 | static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
65de872e TM |
259 | { |
260 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 261 | struct nfs4_state *state = exception->state; |
65de872e TM |
262 | int ret = errorcode; |
263 | ||
264 | exception->retry = 0; | |
265 | switch(errorcode) { | |
266 | case 0: | |
267 | return 0; | |
9e33bed5 TM |
268 | case -NFS4ERR_ADMIN_REVOKED: |
269 | case -NFS4ERR_BAD_STATEID: | |
270 | case -NFS4ERR_OPENMODE: | |
271 | if (state == NULL) | |
272 | break; | |
0400a6b0 TM |
273 | nfs4_schedule_stateid_recovery(server, state); |
274 | goto wait_on_recovery; | |
0ced63d1 TM |
275 | case -NFS4ERR_EXPIRED: |
276 | if (state != NULL) | |
277 | nfs4_schedule_stateid_recovery(server, state); | |
65de872e | 278 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 279 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
280 | nfs4_schedule_lease_recovery(clp); |
281 | goto wait_on_recovery; | |
03391693 | 282 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
283 | case -NFS4ERR_BADSESSION: |
284 | case -NFS4ERR_BADSLOT: | |
285 | case -NFS4ERR_BAD_HIGH_SLOT: | |
286 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
287 | case -NFS4ERR_DEADSESSION: | |
288 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
289 | case -NFS4ERR_SEQ_MISORDERED: | |
290 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
291 | errorcode); | |
0400a6b0 | 292 | nfs4_schedule_session_recovery(clp->cl_session); |
4745e315 | 293 | exception->retry = 1; |
b9179237 | 294 | break; |
03391693 | 295 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 296 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
297 | if (exception->timeout > HZ) { |
298 | /* We have retried a decent amount, time to | |
299 | * fail | |
300 | */ | |
301 | ret = -EBUSY; | |
302 | break; | |
303 | } | |
65de872e TM |
304 | case -NFS4ERR_GRACE: |
305 | case -NFS4ERR_DELAY: | |
2c643488 | 306 | case -EKEYEXPIRED: |
65de872e TM |
307 | ret = nfs4_delay(server->client, &exception->timeout); |
308 | if (ret != 0) | |
309 | break; | |
a8a4ae3a | 310 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
311 | case -NFS4ERR_OLD_STATEID: |
312 | exception->retry = 1; | |
b064eca2 TM |
313 | break; |
314 | case -NFS4ERR_BADOWNER: | |
315 | /* The following works around a Linux server bug! */ | |
316 | case -NFS4ERR_BADNAME: | |
317 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
318 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
319 | exception->retry = 1; | |
320 | printk(KERN_WARNING "NFS: v4 server %s " | |
321 | "does not accept raw " | |
322 | "uid/gids. " | |
323 | "Reenabling the idmapper.\n", | |
324 | server->nfs_client->cl_hostname); | |
325 | } | |
65de872e TM |
326 | } |
327 | /* We failed to handle the error */ | |
328 | return nfs4_map_errors(ret); | |
0400a6b0 | 329 | wait_on_recovery: |
a2c0b9e2 TM |
330 | ret = nfs4_wait_clnt_recover(clp); |
331 | if (ret == 0) | |
332 | exception->retry = 1; | |
333 | return ret; | |
65de872e TM |
334 | } |
335 | ||
336 | ||
452e9352 | 337 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 338 | { |
1da177e4 LT |
339 | spin_lock(&clp->cl_lock); |
340 | if (time_before(clp->cl_last_renewal,timestamp)) | |
341 | clp->cl_last_renewal = timestamp; | |
342 | spin_unlock(&clp->cl_lock); | |
343 | } | |
344 | ||
452e9352 TM |
345 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
346 | { | |
347 | do_renew_lease(server->nfs_client, timestamp); | |
348 | } | |
349 | ||
cccef3b9 AA |
350 | #if defined(CONFIG_NFS_V4_1) |
351 | ||
e2c4ab3c AA |
352 | /* |
353 | * nfs4_free_slot - free a slot and efficiently update slot table. | |
354 | * | |
355 | * freeing a slot is trivially done by clearing its respective bit | |
356 | * in the bitmap. | |
357 | * If the freed slotid equals highest_used_slotid we want to update it | |
358 | * so that the server would be able to size down the slot table if needed, | |
359 | * otherwise we know that the highest_used_slotid is still in use. | |
360 | * When updating highest_used_slotid there may be "holes" in the bitmap | |
361 | * so we need to scan down from highest_used_slotid to 0 looking for the now | |
362 | * highest slotid in use. | |
363 | * If none found, highest_used_slotid is set to -1. | |
35dc1d74 TM |
364 | * |
365 | * Must be called while holding tbl->slot_tbl_lock | |
e2c4ab3c AA |
366 | */ |
367 | static void | |
aabd0b40 | 368 | nfs4_free_slot(struct nfs4_slot_table *tbl, u8 free_slotid) |
e2c4ab3c AA |
369 | { |
370 | int slotid = free_slotid; | |
371 | ||
dfb4f309 | 372 | BUG_ON(slotid < 0 || slotid >= NFS4_MAX_SLOT_TABLE); |
e2c4ab3c AA |
373 | /* clear used bit in bitmap */ |
374 | __clear_bit(slotid, tbl->used_slots); | |
375 | ||
376 | /* update highest_used_slotid when it is freed */ | |
377 | if (slotid == tbl->highest_used_slotid) { | |
378 | slotid = find_last_bit(tbl->used_slots, tbl->max_slots); | |
bcb56164 | 379 | if (slotid < tbl->max_slots) |
e2c4ab3c AA |
380 | tbl->highest_used_slotid = slotid; |
381 | else | |
382 | tbl->highest_used_slotid = -1; | |
383 | } | |
e2c4ab3c AA |
384 | dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__, |
385 | free_slotid, tbl->highest_used_slotid); | |
386 | } | |
387 | ||
3bfb0fc5 | 388 | /* |
42acd021 | 389 | * Signal state manager thread if session fore channel is drained |
3bfb0fc5 | 390 | */ |
42acd021 | 391 | static void nfs4_check_drain_fc_complete(struct nfs4_session *ses) |
3bfb0fc5 | 392 | { |
689cf5c1 AB |
393 | struct rpc_task *task; |
394 | ||
a2118c33 | 395 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state)) { |
689cf5c1 AB |
396 | task = rpc_wake_up_next(&ses->fc_slot_table.slot_tbl_waitq); |
397 | if (task) | |
398 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
3bfb0fc5 AB |
399 | return; |
400 | } | |
401 | ||
402 | if (ses->fc_slot_table.highest_used_slotid != -1) | |
403 | return; | |
404 | ||
42acd021 AA |
405 | dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__); |
406 | complete(&ses->fc_slot_table.complete); | |
407 | } | |
408 | ||
409 | /* | |
410 | * Signal state manager thread if session back channel is drained | |
411 | */ | |
412 | void nfs4_check_drain_bc_complete(struct nfs4_session *ses) | |
413 | { | |
414 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state) || | |
415 | ses->bc_slot_table.highest_used_slotid != -1) | |
416 | return; | |
417 | dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__); | |
418 | complete(&ses->bc_slot_table.complete); | |
3bfb0fc5 AB |
419 | } |
420 | ||
d185a334 | 421 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 AA |
422 | { |
423 | struct nfs4_slot_table *tbl; | |
424 | ||
d185a334 | 425 | tbl = &res->sr_session->fc_slot_table; |
dfb4f309 | 426 | if (!res->sr_slot) { |
13615871 AA |
427 | /* just wake up the next guy waiting since |
428 | * we may have not consumed a slot after all */ | |
691daf3b | 429 | dprintk("%s: No slot\n", __func__); |
35dc1d74 | 430 | return; |
13615871 | 431 | } |
ea028ac9 | 432 | |
35dc1d74 | 433 | spin_lock(&tbl->slot_tbl_lock); |
aabd0b40 | 434 | nfs4_free_slot(tbl, res->sr_slot - tbl->slots); |
42acd021 | 435 | nfs4_check_drain_fc_complete(res->sr_session); |
35dc1d74 | 436 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 437 | res->sr_slot = NULL; |
13615871 AA |
438 | } |
439 | ||
14516c3a | 440 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c AA |
441 | { |
442 | unsigned long timestamp; | |
14516c3a | 443 | struct nfs_client *clp; |
b0df806c AA |
444 | |
445 | /* | |
446 | * sr_status remains 1 if an RPC level error occurred. The server | |
447 | * may or may not have processed the sequence operation.. | |
448 | * Proceed as if the server received and processed the sequence | |
449 | * operation. | |
450 | */ | |
451 | if (res->sr_status == 1) | |
452 | res->sr_status = NFS_OK; | |
453 | ||
468f8613 BS |
454 | /* don't increment the sequence number if the task wasn't sent */ |
455 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
456 | goto out; |
457 | ||
691daf3b | 458 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
459 | switch (res->sr_status) { |
460 | case 0: | |
b0df806c | 461 | /* Update the slot's sequence and clientid lease timer */ |
dfb4f309 | 462 | ++res->sr_slot->seq_nr; |
b0df806c | 463 | timestamp = res->sr_renewal_time; |
14516c3a | 464 | clp = res->sr_session->clp; |
452e9352 | 465 | do_renew_lease(clp, timestamp); |
0629e370 | 466 | /* Check sequence flags */ |
b4410c2f TM |
467 | if (res->sr_status_flags != 0) |
468 | nfs4_schedule_lease_recovery(clp); | |
14516c3a TM |
469 | break; |
470 | case -NFS4ERR_DELAY: | |
471 | /* The server detected a resend of the RPC call and | |
472 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
473 | * of RFC5661. | |
474 | */ | |
12364a4f | 475 | dprintk("%s: slot=%td seq=%d: Operation in progress\n", |
dfb4f309 BH |
476 | __func__, |
477 | res->sr_slot - res->sr_session->fc_slot_table.slots, | |
478 | res->sr_slot->seq_nr); | |
14516c3a TM |
479 | goto out_retry; |
480 | default: | |
481 | /* Just update the slot sequence no. */ | |
dfb4f309 | 482 | ++res->sr_slot->seq_nr; |
b0df806c AA |
483 | } |
484 | out: | |
485 | /* The session may be reset by one of the error handlers. */ | |
486 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 487 | nfs41_sequence_free_slot(res); |
14516c3a TM |
488 | return 1; |
489 | out_retry: | |
d05dd4e9 | 490 | if (!rpc_restart_call(task)) |
14516c3a TM |
491 | goto out; |
492 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
493 | return 0; | |
b0df806c AA |
494 | } |
495 | ||
14516c3a TM |
496 | static int nfs4_sequence_done(struct rpc_task *task, |
497 | struct nfs4_sequence_res *res) | |
df896455 | 498 | { |
14516c3a TM |
499 | if (res->sr_session == NULL) |
500 | return 1; | |
501 | return nfs41_sequence_done(task, res); | |
df896455 TM |
502 | } |
503 | ||
510b8175 BH |
504 | /* |
505 | * nfs4_find_slot - efficiently look for a free slot | |
506 | * | |
507 | * nfs4_find_slot looks for an unset bit in the used_slots bitmap. | |
508 | * If found, we mark the slot as used, update the highest_used_slotid, | |
509 | * and respectively set up the sequence operation args. | |
510 | * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise. | |
fbcd4abc AA |
511 | * |
512 | * Note: must be called with under the slot_tbl_lock. | |
510b8175 BH |
513 | */ |
514 | static u8 | |
40ead580 | 515 | nfs4_find_slot(struct nfs4_slot_table *tbl) |
510b8175 BH |
516 | { |
517 | int slotid; | |
518 | u8 ret_id = NFS4_MAX_SLOT_TABLE; | |
519 | BUILD_BUG_ON((u8)NFS4_MAX_SLOT_TABLE != (int)NFS4_MAX_SLOT_TABLE); | |
520 | ||
510b8175 BH |
521 | dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n", |
522 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, | |
523 | tbl->max_slots); | |
524 | slotid = find_first_zero_bit(tbl->used_slots, tbl->max_slots); | |
525 | if (slotid >= tbl->max_slots) | |
526 | goto out; | |
527 | __set_bit(slotid, tbl->used_slots); | |
528 | if (slotid > tbl->highest_used_slotid) | |
529 | tbl->highest_used_slotid = slotid; | |
530 | ret_id = slotid; | |
531 | out: | |
532 | dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n", | |
533 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, ret_id); | |
510b8175 BH |
534 | return ret_id; |
535 | } | |
536 | ||
dc70d7b3 | 537 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
538 | struct nfs4_sequence_args *args, |
539 | struct nfs4_sequence_res *res, | |
540 | int cache_reply, | |
541 | struct rpc_task *task) | |
542 | { | |
fbcd4abc AA |
543 | struct nfs4_slot *slot; |
544 | struct nfs4_slot_table *tbl; | |
545 | u8 slotid; | |
546 | ||
547 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 548 | /* slot already allocated? */ |
dfb4f309 | 549 | if (res->sr_slot != NULL) |
ce5039c1 AA |
550 | return 0; |
551 | ||
fbcd4abc AA |
552 | tbl = &session->fc_slot_table; |
553 | ||
554 | spin_lock(&tbl->slot_tbl_lock); | |
a2118c33 | 555 | if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) && |
5601a00d | 556 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { |
0b1c8fc4 | 557 | /* The state manager will wait until the slot table is empty */ |
05f0d236 | 558 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
b069d94a | 559 | spin_unlock(&tbl->slot_tbl_lock); |
0b1c8fc4 | 560 | dprintk("%s session is draining\n", __func__); |
05f0d236 | 561 | return -EAGAIN; |
b069d94a AA |
562 | } |
563 | ||
689cf5c1 AB |
564 | if (!rpc_queue_empty(&tbl->slot_tbl_waitq) && |
565 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { | |
566 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
567 | spin_unlock(&tbl->slot_tbl_lock); | |
568 | dprintk("%s enforce FIFO order\n", __func__); | |
569 | return -EAGAIN; | |
570 | } | |
571 | ||
40ead580 | 572 | slotid = nfs4_find_slot(tbl); |
fbcd4abc AA |
573 | if (slotid == NFS4_MAX_SLOT_TABLE) { |
574 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
575 | spin_unlock(&tbl->slot_tbl_lock); | |
576 | dprintk("<-- %s: no free slots\n", __func__); | |
577 | return -EAGAIN; | |
578 | } | |
579 | spin_unlock(&tbl->slot_tbl_lock); | |
580 | ||
689cf5c1 | 581 | rpc_task_set_priority(task, RPC_PRIORITY_NORMAL); |
fbcd4abc | 582 | slot = tbl->slots + slotid; |
99fe60d0 | 583 | args->sa_session = session; |
fbcd4abc AA |
584 | args->sa_slotid = slotid; |
585 | args->sa_cache_this = cache_reply; | |
586 | ||
587 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, slotid, slot->seq_nr); | |
588 | ||
99fe60d0 | 589 | res->sr_session = session; |
dfb4f309 | 590 | res->sr_slot = slot; |
fbcd4abc | 591 | res->sr_renewal_time = jiffies; |
2a6e26cd | 592 | res->sr_status_flags = 0; |
fbcd4abc AA |
593 | /* |
594 | * sr_status is only set in decode_sequence, and so will remain | |
595 | * set to 1 if an rpc level failure occurs. | |
596 | */ | |
597 | res->sr_status = 1; | |
ce5039c1 AA |
598 | return 0; |
599 | } | |
dc70d7b3 | 600 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 601 | |
035168ab | 602 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
603 | struct nfs4_sequence_args *args, |
604 | struct nfs4_sequence_res *res, | |
605 | int cache_reply, | |
606 | struct rpc_task *task) | |
607 | { | |
035168ab | 608 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
609 | int ret = 0; |
610 | ||
035168ab TM |
611 | if (session == NULL) { |
612 | args->sa_session = NULL; | |
613 | res->sr_session = NULL; | |
614 | goto out; | |
615 | } | |
616 | ||
12364a4f | 617 | dprintk("--> %s clp %p session %p sr_slot %td\n", |
dfb4f309 BH |
618 | __func__, session->clp, session, res->sr_slot ? |
619 | res->sr_slot - session->fc_slot_table.slots : -1); | |
ce5039c1 | 620 | |
035168ab | 621 | ret = nfs41_setup_sequence(session, args, res, cache_reply, |
ce5039c1 | 622 | task); |
ce5039c1 AA |
623 | out: |
624 | dprintk("<-- %s status=%d\n", __func__, ret); | |
625 | return ret; | |
626 | } | |
627 | ||
628 | struct nfs41_call_sync_data { | |
035168ab | 629 | const struct nfs_server *seq_server; |
ce5039c1 AA |
630 | struct nfs4_sequence_args *seq_args; |
631 | struct nfs4_sequence_res *seq_res; | |
632 | int cache_reply; | |
633 | }; | |
634 | ||
635 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
636 | { | |
637 | struct nfs41_call_sync_data *data = calldata; | |
638 | ||
035168ab TM |
639 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
640 | ||
641 | if (nfs4_setup_sequence(data->seq_server, data->seq_args, | |
ce5039c1 AA |
642 | data->seq_res, data->cache_reply, task)) |
643 | return; | |
644 | rpc_call_start(task); | |
645 | } | |
646 | ||
b257957e AB |
647 | static void nfs41_call_priv_sync_prepare(struct rpc_task *task, void *calldata) |
648 | { | |
649 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
650 | nfs41_call_sync_prepare(task, calldata); | |
651 | } | |
652 | ||
69ab40c4 AA |
653 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
654 | { | |
655 | struct nfs41_call_sync_data *data = calldata; | |
656 | ||
14516c3a | 657 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
658 | } |
659 | ||
ce5039c1 AA |
660 | struct rpc_call_ops nfs41_call_sync_ops = { |
661 | .rpc_call_prepare = nfs41_call_sync_prepare, | |
69ab40c4 | 662 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
663 | }; |
664 | ||
b257957e AB |
665 | struct rpc_call_ops nfs41_call_priv_sync_ops = { |
666 | .rpc_call_prepare = nfs41_call_priv_sync_prepare, | |
667 | .rpc_call_done = nfs41_call_sync_done, | |
668 | }; | |
669 | ||
7c513058 BS |
670 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
671 | struct nfs_server *server, | |
ce5039c1 AA |
672 | struct rpc_message *msg, |
673 | struct nfs4_sequence_args *args, | |
674 | struct nfs4_sequence_res *res, | |
b257957e AB |
675 | int cache_reply, |
676 | int privileged) | |
ce5039c1 AA |
677 | { |
678 | int ret; | |
679 | struct rpc_task *task; | |
680 | struct nfs41_call_sync_data data = { | |
035168ab | 681 | .seq_server = server, |
ce5039c1 AA |
682 | .seq_args = args, |
683 | .seq_res = res, | |
684 | .cache_reply = cache_reply, | |
685 | }; | |
686 | struct rpc_task_setup task_setup = { | |
7c513058 | 687 | .rpc_client = clnt, |
ce5039c1 AA |
688 | .rpc_message = msg, |
689 | .callback_ops = &nfs41_call_sync_ops, | |
690 | .callback_data = &data | |
691 | }; | |
692 | ||
dfb4f309 | 693 | res->sr_slot = NULL; |
b257957e AB |
694 | if (privileged) |
695 | task_setup.callback_ops = &nfs41_call_priv_sync_ops; | |
ce5039c1 AA |
696 | task = rpc_run_task(&task_setup); |
697 | if (IS_ERR(task)) | |
698 | ret = PTR_ERR(task); | |
699 | else { | |
700 | ret = task->tk_status; | |
701 | rpc_put_task(task); | |
702 | } | |
703 | return ret; | |
704 | } | |
705 | ||
7c513058 BS |
706 | int _nfs4_call_sync_session(struct rpc_clnt *clnt, |
707 | struct nfs_server *server, | |
cccef3b9 AA |
708 | struct rpc_message *msg, |
709 | struct nfs4_sequence_args *args, | |
710 | struct nfs4_sequence_res *res, | |
711 | int cache_reply) | |
712 | { | |
7c513058 | 713 | return nfs4_call_sync_sequence(clnt, server, msg, args, res, cache_reply, 0); |
cccef3b9 AA |
714 | } |
715 | ||
df896455 | 716 | #else |
14516c3a TM |
717 | static int nfs4_sequence_done(struct rpc_task *task, |
718 | struct nfs4_sequence_res *res) | |
df896455 | 719 | { |
14516c3a | 720 | return 1; |
df896455 | 721 | } |
cccef3b9 AA |
722 | #endif /* CONFIG_NFS_V4_1 */ |
723 | ||
7c513058 BS |
724 | int _nfs4_call_sync(struct rpc_clnt *clnt, |
725 | struct nfs_server *server, | |
cccef3b9 AA |
726 | struct rpc_message *msg, |
727 | struct nfs4_sequence_args *args, | |
728 | struct nfs4_sequence_res *res, | |
729 | int cache_reply) | |
730 | { | |
f3752975 | 731 | args->sa_session = res->sr_session = NULL; |
7c513058 | 732 | return rpc_call_sync(clnt, msg, 0); |
cccef3b9 AA |
733 | } |
734 | ||
e73b83f2 | 735 | static inline |
7c513058 BS |
736 | int nfs4_call_sync(struct rpc_clnt *clnt, |
737 | struct nfs_server *server, | |
e73b83f2 BS |
738 | struct rpc_message *msg, |
739 | struct nfs4_sequence_args *args, | |
740 | struct nfs4_sequence_res *res, | |
741 | int cache_reply) | |
742 | { | |
7c513058 BS |
743 | return server->nfs_client->cl_mvops->call_sync(clnt, server, msg, |
744 | args, res, cache_reply); | |
e73b83f2 | 745 | } |
cccef3b9 | 746 | |
38478b24 | 747 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 748 | { |
38478b24 | 749 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 750 | |
38478b24 | 751 | spin_lock(&dir->i_lock); |
40d24704 | 752 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; |
a9a4a87a | 753 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 754 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 755 | dir->i_version = cinfo->after; |
38478b24 | 756 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
757 | } |
758 | ||
e56e0b78 | 759 | struct nfs4_opendata { |
c6d00e63 | 760 | struct kref kref; |
e56e0b78 TM |
761 | struct nfs_openargs o_arg; |
762 | struct nfs_openres o_res; | |
cdd4e68b TM |
763 | struct nfs_open_confirmargs c_arg; |
764 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
765 | struct nfs4_string owner_name; |
766 | struct nfs4_string group_name; | |
e56e0b78 TM |
767 | struct nfs_fattr f_attr; |
768 | struct nfs_fattr dir_attr; | |
e56e0b78 | 769 | struct dentry *dir; |
82a2c1b7 | 770 | struct dentry *dentry; |
e56e0b78 | 771 | struct nfs4_state_owner *owner; |
aac00a8d | 772 | struct nfs4_state *state; |
e56e0b78 | 773 | struct iattr attrs; |
26e976a8 | 774 | unsigned long timestamp; |
3e309914 | 775 | unsigned int rpc_done : 1; |
24ac23ab TM |
776 | int rpc_status; |
777 | int cancelled; | |
e56e0b78 TM |
778 | }; |
779 | ||
2ced46c2 TM |
780 | |
781 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
782 | { | |
783 | p->o_res.f_attr = &p->f_attr; | |
784 | p->o_res.dir_attr = &p->dir_attr; | |
c1d51931 TM |
785 | p->o_res.seqid = p->o_arg.seqid; |
786 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 TM |
787 | p->o_res.server = p->o_arg.server; |
788 | nfs_fattr_init(&p->f_attr); | |
789 | nfs_fattr_init(&p->dir_attr); | |
6926afd1 | 790 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
791 | } |
792 | ||
82a2c1b7 | 793 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 794 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be TM |
795 | const struct iattr *attrs, |
796 | gfp_t gfp_mask) | |
e56e0b78 | 797 | { |
82a2c1b7 | 798 | struct dentry *parent = dget_parent(dentry); |
e56e0b78 TM |
799 | struct inode *dir = parent->d_inode; |
800 | struct nfs_server *server = NFS_SERVER(dir); | |
801 | struct nfs4_opendata *p; | |
802 | ||
8535b2be | 803 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
804 | if (p == NULL) |
805 | goto err; | |
8535b2be | 806 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 TM |
807 | if (p->o_arg.seqid == NULL) |
808 | goto err_free; | |
82a2c1b7 AV |
809 | nfs_sb_active(dentry->d_sb); |
810 | p->dentry = dget(dentry); | |
e56e0b78 TM |
811 | p->dir = parent; |
812 | p->owner = sp; | |
813 | atomic_inc(&sp->so_count); | |
814 | p->o_arg.fh = NFS_FH(dir); | |
dc0b027d TM |
815 | p->o_arg.open_flags = flags; |
816 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
7539bbab | 817 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
9157c31d | 818 | p->o_arg.id = sp->so_owner_id; |
82a2c1b7 | 819 | p->o_arg.name = &dentry->d_name; |
e56e0b78 TM |
820 | p->o_arg.server = server; |
821 | p->o_arg.bitmask = server->attr_bitmask; | |
6926afd1 | 822 | p->o_arg.dir_bitmask = server->cache_consistency_bitmask; |
e56e0b78 | 823 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; |
d77d76ff TM |
824 | if (flags & O_CREAT) { |
825 | u32 *s; | |
826 | ||
e56e0b78 TM |
827 | p->o_arg.u.attrs = &p->attrs; |
828 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
d77d76ff TM |
829 | s = (u32 *) p->o_arg.u.verifier.data; |
830 | s[0] = jiffies; | |
831 | s[1] = current->pid; | |
e56e0b78 | 832 | } |
cdd4e68b TM |
833 | p->c_arg.fh = &p->o_res.fh; |
834 | p->c_arg.stateid = &p->o_res.stateid; | |
835 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 836 | nfs4_init_opendata_res(p); |
c6d00e63 | 837 | kref_init(&p->kref); |
e56e0b78 TM |
838 | return p; |
839 | err_free: | |
840 | kfree(p); | |
841 | err: | |
842 | dput(parent); | |
843 | return NULL; | |
844 | } | |
845 | ||
c6d00e63 | 846 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 847 | { |
c6d00e63 TM |
848 | struct nfs4_opendata *p = container_of(kref, |
849 | struct nfs4_opendata, kref); | |
82a2c1b7 | 850 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
851 | |
852 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
853 | if (p->state != NULL) |
854 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
855 | nfs4_put_state_owner(p->owner); |
856 | dput(p->dir); | |
82a2c1b7 AV |
857 | dput(p->dentry); |
858 | nfs_sb_deactive(sb); | |
6926afd1 | 859 | nfs_fattr_free_names(&p->f_attr); |
c6d00e63 TM |
860 | kfree(p); |
861 | } | |
862 | ||
863 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
864 | { | |
865 | if (p != NULL) | |
866 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
867 | } |
868 | ||
06f814a3 TM |
869 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
870 | { | |
06f814a3 TM |
871 | int ret; |
872 | ||
06f814a3 | 873 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
874 | return ret; |
875 | } | |
876 | ||
dc0b027d | 877 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
878 | { |
879 | int ret = 0; | |
dc0b027d TM |
880 | |
881 | if (open_mode & O_EXCL) | |
882 | goto out; | |
883 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 884 | case FMODE_READ: |
88069f77 TM |
885 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
886 | && state->n_rdonly != 0; | |
6ee41268 TM |
887 | break; |
888 | case FMODE_WRITE: | |
88069f77 TM |
889 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
890 | && state->n_wronly != 0; | |
6ee41268 TM |
891 | break; |
892 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
893 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
894 | && state->n_rdwr != 0; | |
6ee41268 | 895 | } |
dc0b027d | 896 | out: |
6ee41268 TM |
897 | return ret; |
898 | } | |
899 | ||
dc0b027d | 900 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 901 | { |
652f89f6 TM |
902 | if (delegation == NULL) |
903 | return 0; | |
dc0b027d | 904 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 905 | return 0; |
15c831bf | 906 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 907 | return 0; |
b7391f44 | 908 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
909 | return 1; |
910 | } | |
911 | ||
dc0b027d | 912 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 913 | { |
dc0b027d | 914 | switch (fmode) { |
e7616923 TM |
915 | case FMODE_WRITE: |
916 | state->n_wronly++; | |
917 | break; | |
918 | case FMODE_READ: | |
919 | state->n_rdonly++; | |
920 | break; | |
921 | case FMODE_READ|FMODE_WRITE: | |
922 | state->n_rdwr++; | |
923 | } | |
dc0b027d | 924 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
925 | } |
926 | ||
dc0b027d | 927 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
928 | { |
929 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
930 | memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data)); | |
931 | memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data)); | |
dc0b027d | 932 | switch (fmode) { |
003707c7 TM |
933 | case FMODE_READ: |
934 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
935 | break; | |
936 | case FMODE_WRITE: | |
937 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
938 | break; | |
939 | case FMODE_READ|FMODE_WRITE: | |
940 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
941 | } | |
e7616923 TM |
942 | } |
943 | ||
dc0b027d | 944 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 945 | { |
8bda4e4c | 946 | write_seqlock(&state->seqlock); |
dc0b027d | 947 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 948 | write_sequnlock(&state->seqlock); |
003707c7 TM |
949 | } |
950 | ||
dc0b027d | 951 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 952 | { |
8bda4e4c TM |
953 | /* |
954 | * Protect the call to nfs4_state_set_mode_locked and | |
955 | * serialise the stateid update | |
956 | */ | |
957 | write_seqlock(&state->seqlock); | |
003707c7 TM |
958 | if (deleg_stateid != NULL) { |
959 | memcpy(state->stateid.data, deleg_stateid->data, sizeof(state->stateid.data)); | |
960 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
961 | } | |
962 | if (open_stateid != NULL) | |
dc0b027d | 963 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
964 | write_sequnlock(&state->seqlock); |
965 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 966 | update_open_stateflags(state, fmode); |
ec073428 | 967 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
968 | } |
969 | ||
dc0b027d | 970 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
971 | { |
972 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
973 | struct nfs_delegation *deleg_cur; | |
974 | int ret = 0; | |
975 | ||
dc0b027d | 976 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
977 | |
978 | rcu_read_lock(); | |
979 | deleg_cur = rcu_dereference(nfsi->delegation); | |
980 | if (deleg_cur == NULL) | |
981 | goto no_delegation; | |
982 | ||
983 | spin_lock(&deleg_cur->lock); | |
984 | if (nfsi->delegation != deleg_cur || | |
dc0b027d | 985 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
986 | goto no_delegation_unlock; |
987 | ||
988 | if (delegation == NULL) | |
989 | delegation = &deleg_cur->stateid; | |
990 | else if (memcmp(deleg_cur->stateid.data, delegation->data, NFS4_STATEID_SIZE) != 0) | |
991 | goto no_delegation_unlock; | |
992 | ||
b7391f44 | 993 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 994 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
995 | ret = 1; |
996 | no_delegation_unlock: | |
997 | spin_unlock(&deleg_cur->lock); | |
998 | no_delegation: | |
999 | rcu_read_unlock(); | |
1000 | ||
1001 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 1002 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
1003 | ret = 1; |
1004 | } | |
1005 | ||
1006 | return ret; | |
1007 | } | |
1008 | ||
1009 | ||
dc0b027d | 1010 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1011 | { |
1012 | struct nfs_delegation *delegation; | |
1013 | ||
1014 | rcu_read_lock(); | |
1015 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1016 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1017 | rcu_read_unlock(); |
1018 | return; | |
1019 | } | |
1020 | rcu_read_unlock(); | |
1021 | nfs_inode_return_delegation(inode); | |
1022 | } | |
1023 | ||
6ee41268 | 1024 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1025 | { |
1026 | struct nfs4_state *state = opendata->state; | |
1027 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1028 | struct nfs_delegation *delegation; | |
dc0b027d TM |
1029 | int open_mode = opendata->o_arg.open_flags & O_EXCL; |
1030 | fmode_t fmode = opendata->o_arg.fmode; | |
aac00a8d TM |
1031 | nfs4_stateid stateid; |
1032 | int ret = -EAGAIN; | |
1033 | ||
aac00a8d | 1034 | for (;;) { |
dc0b027d | 1035 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 1036 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
1037 | if (can_open_cached(state, fmode, open_mode)) { |
1038 | update_open_stateflags(state, fmode); | |
6ee41268 | 1039 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
1040 | goto out_return_state; |
1041 | } | |
1042 | spin_unlock(&state->owner->so_lock); | |
1043 | } | |
34310430 TM |
1044 | rcu_read_lock(); |
1045 | delegation = rcu_dereference(nfsi->delegation); | |
652f89f6 | 1046 | if (!can_open_delegated(delegation, fmode)) { |
34310430 | 1047 | rcu_read_unlock(); |
aac00a8d | 1048 | break; |
34310430 | 1049 | } |
aac00a8d TM |
1050 | /* Save the delegation */ |
1051 | memcpy(stateid.data, delegation->stateid.data, sizeof(stateid.data)); | |
1052 | rcu_read_unlock(); | |
af22f94a | 1053 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
1054 | if (ret != 0) |
1055 | goto out; | |
1056 | ret = -EAGAIN; | |
34310430 TM |
1057 | |
1058 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1059 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1060 | goto out_return_state; |
aac00a8d | 1061 | } |
aac00a8d TM |
1062 | out: |
1063 | return ERR_PTR(ret); | |
1064 | out_return_state: | |
1065 | atomic_inc(&state->count); | |
1066 | return state; | |
1067 | } | |
1068 | ||
24ac23ab TM |
1069 | static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) |
1070 | { | |
1071 | struct inode *inode; | |
1072 | struct nfs4_state *state = NULL; | |
003707c7 | 1073 | struct nfs_delegation *delegation; |
1b370bc2 | 1074 | int ret; |
24ac23ab | 1075 | |
aac00a8d | 1076 | if (!data->rpc_done) { |
6ee41268 | 1077 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1078 | goto out; |
1079 | } | |
1080 | ||
1b370bc2 | 1081 | ret = -EAGAIN; |
24ac23ab | 1082 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1083 | goto err; |
24ac23ab | 1084 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 1085 | ret = PTR_ERR(inode); |
03f28e3a | 1086 | if (IS_ERR(inode)) |
1b370bc2 TM |
1087 | goto err; |
1088 | ret = -ENOMEM; | |
24ac23ab TM |
1089 | state = nfs4_get_open_state(inode, data->owner); |
1090 | if (state == NULL) | |
1b370bc2 | 1091 | goto err_put_inode; |
549d6ed5 | 1092 | if (data->o_res.delegation_type != 0) { |
549d6ed5 TM |
1093 | int delegation_flags = 0; |
1094 | ||
003707c7 TM |
1095 | rcu_read_lock(); |
1096 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
1097 | if (delegation) | |
1098 | delegation_flags = delegation->flags; | |
1099 | rcu_read_unlock(); | |
652f89f6 TM |
1100 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) { |
1101 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " | |
1102 | "returning a delegation for " | |
1103 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
1104 | NFS_CLIENT(inode)->cl_server); | |
1105 | } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) | |
549d6ed5 TM |
1106 | nfs_inode_set_delegation(state->inode, |
1107 | data->owner->so_cred, | |
1108 | &data->o_res); | |
1109 | else | |
1110 | nfs_inode_reclaim_delegation(state->inode, | |
1111 | data->owner->so_cred, | |
1112 | &data->o_res); | |
1113 | } | |
34310430 TM |
1114 | |
1115 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
dc0b027d | 1116 | data->o_arg.fmode); |
24ac23ab | 1117 | iput(inode); |
aac00a8d | 1118 | out: |
24ac23ab | 1119 | return state; |
1b370bc2 TM |
1120 | err_put_inode: |
1121 | iput(inode); | |
1122 | err: | |
1123 | return ERR_PTR(ret); | |
24ac23ab TM |
1124 | } |
1125 | ||
864472e9 TM |
1126 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1127 | { | |
1128 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1129 | struct nfs_open_context *ctx; | |
1130 | ||
1131 | spin_lock(&state->inode->i_lock); | |
1132 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1133 | if (ctx->state != state) | |
1134 | continue; | |
1135 | get_nfs_open_context(ctx); | |
1136 | spin_unlock(&state->inode->i_lock); | |
1137 | return ctx; | |
1138 | } | |
1139 | spin_unlock(&state->inode->i_lock); | |
1140 | return ERR_PTR(-ENOENT); | |
1141 | } | |
1142 | ||
6f220ed5 TM |
1143 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
1144 | { | |
1145 | struct nfs4_opendata *opendata; | |
1146 | ||
3d4ff43d | 1147 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, NULL, GFP_NOFS); |
6f220ed5 TM |
1148 | if (opendata == NULL) |
1149 | return ERR_PTR(-ENOMEM); | |
1150 | opendata->state = state; | |
1151 | atomic_inc(&state->count); | |
1152 | return opendata; | |
1153 | } | |
1154 | ||
dc0b027d | 1155 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1156 | { |
2ced46c2 | 1157 | struct nfs4_state *newstate; |
864472e9 TM |
1158 | int ret; |
1159 | ||
dc0b027d TM |
1160 | opendata->o_arg.open_flags = 0; |
1161 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1162 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1163 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1164 | nfs4_init_opendata_res(opendata); | |
b257957e | 1165 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1166 | if (ret != 0) |
1167 | return ret; | |
2ced46c2 | 1168 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1169 | if (IS_ERR(newstate)) |
1170 | return PTR_ERR(newstate); | |
643168c2 | 1171 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1172 | *res = newstate; |
864472e9 TM |
1173 | return 0; |
1174 | } | |
1175 | ||
1176 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1177 | { | |
864472e9 | 1178 | struct nfs4_state *newstate; |
864472e9 TM |
1179 | int ret; |
1180 | ||
1181 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1182 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
1183 | smp_rmb(); |
1184 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1185 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1186 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1187 | if (ret != 0) |
1188 | return ret; | |
2ced46c2 TM |
1189 | if (newstate != state) |
1190 | return -ESTALE; | |
864472e9 TM |
1191 | } |
1192 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1193 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1194 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1195 | if (ret != 0) |
1196 | return ret; | |
2ced46c2 TM |
1197 | if (newstate != state) |
1198 | return -ESTALE; | |
864472e9 TM |
1199 | } |
1200 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1201 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1202 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1203 | if (ret != 0) |
1204 | return ret; | |
2ced46c2 TM |
1205 | if (newstate != state) |
1206 | return -ESTALE; | |
864472e9 | 1207 | } |
1ac7e2fd TM |
1208 | /* |
1209 | * We may have performed cached opens for all three recoveries. | |
1210 | * Check if we need to update the current stateid. | |
1211 | */ | |
1212 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
1213 | memcmp(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)) != 0) { | |
8bda4e4c | 1214 | write_seqlock(&state->seqlock); |
1ac7e2fd TM |
1215 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
1216 | memcpy(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)); | |
8bda4e4c | 1217 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1218 | } |
864472e9 TM |
1219 | return 0; |
1220 | } | |
1221 | ||
1da177e4 LT |
1222 | /* |
1223 | * OPEN_RECLAIM: | |
1224 | * reclaim state on the server after a reboot. | |
1da177e4 | 1225 | */ |
539cd03a | 1226 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1227 | { |
1ac7e2fd | 1228 | struct nfs_delegation *delegation; |
864472e9 | 1229 | struct nfs4_opendata *opendata; |
dc0b027d | 1230 | fmode_t delegation_type = 0; |
1da177e4 LT |
1231 | int status; |
1232 | ||
6f220ed5 TM |
1233 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1234 | if (IS_ERR(opendata)) | |
1235 | return PTR_ERR(opendata); | |
864472e9 TM |
1236 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
1237 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
1238 | rcu_read_lock(); |
1239 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1240 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1241 | delegation_type = delegation->type; |
1ac7e2fd | 1242 | rcu_read_unlock(); |
864472e9 TM |
1243 | opendata->o_arg.u.delegation_type = delegation_type; |
1244 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1245 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1246 | return status; |
1247 | } | |
1248 | ||
539cd03a | 1249 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1250 | { |
1251 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1252 | struct nfs4_exception exception = { }; | |
1253 | int err; | |
1254 | do { | |
539cd03a | 1255 | err = _nfs4_do_open_reclaim(ctx, state); |
168667c4 | 1256 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1257 | break; |
1258 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1259 | } while (exception.retry); |
1260 | return err; | |
1261 | } | |
1262 | ||
864472e9 TM |
1263 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1264 | { | |
1265 | struct nfs_open_context *ctx; | |
1266 | int ret; | |
1267 | ||
1268 | ctx = nfs4_state_find_open_context(state); | |
1269 | if (IS_ERR(ctx)) | |
1270 | return PTR_ERR(ctx); | |
539cd03a | 1271 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1272 | put_nfs_open_context(ctx); |
1273 | return ret; | |
1274 | } | |
1275 | ||
13437e12 | 1276 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 1277 | { |
e56e0b78 | 1278 | struct nfs4_opendata *opendata; |
864472e9 | 1279 | int ret; |
1da177e4 | 1280 | |
6f220ed5 TM |
1281 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1282 | if (IS_ERR(opendata)) | |
1283 | return PTR_ERR(opendata); | |
e56e0b78 | 1284 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
13437e12 | 1285 | memcpy(opendata->o_arg.u.delegation.data, stateid->data, |
e56e0b78 | 1286 | sizeof(opendata->o_arg.u.delegation.data)); |
864472e9 | 1287 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 1288 | nfs4_opendata_put(opendata); |
864472e9 | 1289 | return ret; |
1da177e4 LT |
1290 | } |
1291 | ||
13437e12 | 1292 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
1293 | { |
1294 | struct nfs4_exception exception = { }; | |
539cd03a | 1295 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
1296 | int err; |
1297 | do { | |
13437e12 | 1298 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
1299 | switch (err) { |
1300 | case 0: | |
965b5d67 TM |
1301 | case -ENOENT: |
1302 | case -ESTALE: | |
1303 | goto out; | |
bcfa49f6 RL |
1304 | case -NFS4ERR_BADSESSION: |
1305 | case -NFS4ERR_BADSLOT: | |
1306 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1307 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1308 | case -NFS4ERR_DEADSESSION: | |
0400a6b0 | 1309 | nfs4_schedule_session_recovery(server->nfs_client->cl_session); |
bcfa49f6 | 1310 | goto out; |
1da177e4 LT |
1311 | case -NFS4ERR_STALE_CLIENTID: |
1312 | case -NFS4ERR_STALE_STATEID: | |
1313 | case -NFS4ERR_EXPIRED: | |
1314 | /* Don't recall a delegation if it was lost */ | |
0400a6b0 | 1315 | nfs4_schedule_lease_recovery(server->nfs_client); |
965b5d67 TM |
1316 | goto out; |
1317 | case -ERESTARTSYS: | |
1318 | /* | |
1319 | * The show must go on: exit, but mark the | |
1320 | * stateid as needing recovery. | |
1321 | */ | |
1322 | case -NFS4ERR_ADMIN_REVOKED: | |
1323 | case -NFS4ERR_BAD_STATEID: | |
0400a6b0 | 1324 | nfs4_schedule_stateid_recovery(server, state); |
168667c4 TM |
1325 | case -EKEYEXPIRED: |
1326 | /* | |
1327 | * User RPCSEC_GSS context has expired. | |
1328 | * We cannot recover this stateid now, so | |
1329 | * skip it and allow recovery thread to | |
1330 | * proceed. | |
1331 | */ | |
965b5d67 TM |
1332 | case -ENOMEM: |
1333 | err = 0; | |
1334 | goto out; | |
1da177e4 LT |
1335 | } |
1336 | err = nfs4_handle_exception(server, err, &exception); | |
1337 | } while (exception.retry); | |
965b5d67 | 1338 | out: |
1da177e4 LT |
1339 | return err; |
1340 | } | |
1341 | ||
cdd4e68b TM |
1342 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1343 | { | |
1344 | struct nfs4_opendata *data = calldata; | |
1345 | ||
1346 | data->rpc_status = task->tk_status; | |
26e976a8 | 1347 | if (data->rpc_status == 0) { |
cdd4e68b TM |
1348 | memcpy(data->o_res.stateid.data, data->c_res.stateid.data, |
1349 | sizeof(data->o_res.stateid.data)); | |
bb22629e | 1350 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1351 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1352 | data->rpc_done = 1; |
26e976a8 | 1353 | } |
cdd4e68b TM |
1354 | } |
1355 | ||
1356 | static void nfs4_open_confirm_release(void *calldata) | |
1357 | { | |
1358 | struct nfs4_opendata *data = calldata; | |
1359 | struct nfs4_state *state = NULL; | |
1360 | ||
1361 | /* If this request hasn't been cancelled, do nothing */ | |
1362 | if (data->cancelled == 0) | |
1363 | goto out_free; | |
1364 | /* In case of error, no cleanup! */ | |
3e309914 | 1365 | if (!data->rpc_done) |
cdd4e68b | 1366 | goto out_free; |
cdd4e68b | 1367 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1368 | if (!IS_ERR(state)) |
643168c2 | 1369 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1370 | out_free: |
c6d00e63 | 1371 | nfs4_opendata_put(data); |
cdd4e68b TM |
1372 | } |
1373 | ||
1374 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1375 | .rpc_call_done = nfs4_open_confirm_done, |
1376 | .rpc_release = nfs4_open_confirm_release, | |
1377 | }; | |
1378 | ||
1379 | /* | |
1380 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1381 | */ | |
1382 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1383 | { | |
1384 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1385 | struct rpc_task *task; | |
5138fde0 TM |
1386 | struct rpc_message msg = { |
1387 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1388 | .rpc_argp = &data->c_arg, | |
1389 | .rpc_resp = &data->c_res, | |
1390 | .rpc_cred = data->owner->so_cred, | |
1391 | }; | |
c970aa85 TM |
1392 | struct rpc_task_setup task_setup_data = { |
1393 | .rpc_client = server->client, | |
5138fde0 | 1394 | .rpc_message = &msg, |
c970aa85 TM |
1395 | .callback_ops = &nfs4_open_confirm_ops, |
1396 | .callback_data = data, | |
101070ca | 1397 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1398 | .flags = RPC_TASK_ASYNC, |
1399 | }; | |
1da177e4 LT |
1400 | int status; |
1401 | ||
c6d00e63 | 1402 | kref_get(&data->kref); |
3e309914 TM |
1403 | data->rpc_done = 0; |
1404 | data->rpc_status = 0; | |
5138fde0 | 1405 | data->timestamp = jiffies; |
c970aa85 | 1406 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1407 | if (IS_ERR(task)) |
cdd4e68b | 1408 | return PTR_ERR(task); |
cdd4e68b TM |
1409 | status = nfs4_wait_for_completion_rpc_task(task); |
1410 | if (status != 0) { | |
1411 | data->cancelled = 1; | |
1412 | smp_wmb(); | |
1413 | } else | |
1414 | status = data->rpc_status; | |
e6b3c4db | 1415 | rpc_put_task(task); |
1da177e4 LT |
1416 | return status; |
1417 | } | |
1418 | ||
24ac23ab | 1419 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1420 | { |
24ac23ab TM |
1421 | struct nfs4_opendata *data = calldata; |
1422 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 1423 | |
24ac23ab TM |
1424 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
1425 | return; | |
aac00a8d TM |
1426 | /* |
1427 | * Check if we still need to send an OPEN call, or if we can use | |
1428 | * a delegation instead. | |
1429 | */ | |
1430 | if (data->state != NULL) { | |
1431 | struct nfs_delegation *delegation; | |
1432 | ||
dc0b027d | 1433 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1434 | goto out_no_action; |
aac00a8d TM |
1435 | rcu_read_lock(); |
1436 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
652f89f6 TM |
1437 | if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR && |
1438 | can_open_delegated(delegation, data->o_arg.fmode)) | |
1439 | goto unlock_no_action; | |
aac00a8d TM |
1440 | rcu_read_unlock(); |
1441 | } | |
24ac23ab | 1442 | /* Update sequence id. */ |
9157c31d | 1443 | data->o_arg.id = sp->so_owner_id; |
1f0e890d | 1444 | data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; |
6f220ed5 | 1445 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 1446 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
6f220ed5 TM |
1447 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1448 | } | |
26e976a8 | 1449 | data->timestamp = jiffies; |
035168ab | 1450 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c AA |
1451 | &data->o_arg.seq_args, |
1452 | &data->o_res.seq_res, 1, task)) | |
1453 | return; | |
5138fde0 | 1454 | rpc_call_start(task); |
6ee41268 | 1455 | return; |
652f89f6 TM |
1456 | unlock_no_action: |
1457 | rcu_read_unlock(); | |
6ee41268 TM |
1458 | out_no_action: |
1459 | task->tk_action = NULL; | |
1460 | ||
24ac23ab | 1461 | } |
1da177e4 | 1462 | |
b257957e AB |
1463 | static void nfs4_recover_open_prepare(struct rpc_task *task, void *calldata) |
1464 | { | |
1465 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
1466 | nfs4_open_prepare(task, calldata); | |
1467 | } | |
1468 | ||
24ac23ab TM |
1469 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1470 | { | |
1471 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1472 | |
24ac23ab | 1473 | data->rpc_status = task->tk_status; |
d898528c | 1474 | |
14516c3a TM |
1475 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1476 | return; | |
d898528c | 1477 | |
24ac23ab TM |
1478 | if (task->tk_status == 0) { |
1479 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1480 | case S_IFREG: |
1481 | break; | |
1482 | case S_IFLNK: | |
24ac23ab | 1483 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1484 | break; |
1485 | case S_IFDIR: | |
24ac23ab | 1486 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1487 | break; |
1488 | default: | |
24ac23ab | 1489 | data->rpc_status = -ENOTDIR; |
6f926b5b | 1490 | } |
26e976a8 | 1491 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1492 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1493 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1494 | } |
3e309914 | 1495 | data->rpc_done = 1; |
24ac23ab | 1496 | } |
6f926b5b | 1497 | |
24ac23ab TM |
1498 | static void nfs4_open_release(void *calldata) |
1499 | { | |
1500 | struct nfs4_opendata *data = calldata; | |
1501 | struct nfs4_state *state = NULL; | |
1502 | ||
1503 | /* If this request hasn't been cancelled, do nothing */ | |
1504 | if (data->cancelled == 0) | |
1505 | goto out_free; | |
1506 | /* In case of error, no cleanup! */ | |
3e309914 | 1507 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1508 | goto out_free; |
1509 | /* In case we need an open_confirm, no cleanup! */ | |
1510 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1511 | goto out_free; | |
24ac23ab | 1512 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1513 | if (!IS_ERR(state)) |
643168c2 | 1514 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1515 | out_free: |
c6d00e63 | 1516 | nfs4_opendata_put(data); |
24ac23ab TM |
1517 | } |
1518 | ||
1519 | static const struct rpc_call_ops nfs4_open_ops = { | |
1520 | .rpc_call_prepare = nfs4_open_prepare, | |
1521 | .rpc_call_done = nfs4_open_done, | |
1522 | .rpc_release = nfs4_open_release, | |
1523 | }; | |
1524 | ||
b257957e AB |
1525 | static const struct rpc_call_ops nfs4_recover_open_ops = { |
1526 | .rpc_call_prepare = nfs4_recover_open_prepare, | |
1527 | .rpc_call_done = nfs4_open_done, | |
1528 | .rpc_release = nfs4_open_release, | |
1529 | }; | |
1530 | ||
1531 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) | |
24ac23ab TM |
1532 | { |
1533 | struct inode *dir = data->dir->d_inode; | |
1534 | struct nfs_server *server = NFS_SERVER(dir); | |
1535 | struct nfs_openargs *o_arg = &data->o_arg; | |
1536 | struct nfs_openres *o_res = &data->o_res; | |
1537 | struct rpc_task *task; | |
5138fde0 TM |
1538 | struct rpc_message msg = { |
1539 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1540 | .rpc_argp = o_arg, | |
1541 | .rpc_resp = o_res, | |
1542 | .rpc_cred = data->owner->so_cred, | |
1543 | }; | |
c970aa85 TM |
1544 | struct rpc_task_setup task_setup_data = { |
1545 | .rpc_client = server->client, | |
5138fde0 | 1546 | .rpc_message = &msg, |
c970aa85 TM |
1547 | .callback_ops = &nfs4_open_ops, |
1548 | .callback_data = data, | |
101070ca | 1549 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1550 | .flags = RPC_TASK_ASYNC, |
1551 | }; | |
24ac23ab TM |
1552 | int status; |
1553 | ||
c6d00e63 | 1554 | kref_get(&data->kref); |
3e309914 TM |
1555 | data->rpc_done = 0; |
1556 | data->rpc_status = 0; | |
2ced46c2 | 1557 | data->cancelled = 0; |
b257957e AB |
1558 | if (isrecover) |
1559 | task_setup_data.callback_ops = &nfs4_recover_open_ops; | |
c970aa85 | 1560 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1561 | if (IS_ERR(task)) |
1562 | return PTR_ERR(task); | |
1563 | status = nfs4_wait_for_completion_rpc_task(task); | |
1564 | if (status != 0) { | |
1565 | data->cancelled = 1; | |
1566 | smp_wmb(); | |
1567 | } else | |
1568 | status = data->rpc_status; | |
1569 | rpc_put_task(task); | |
1570 | ||
1571 | return status; | |
1572 | } | |
1573 | ||
1574 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1575 | { | |
1576 | struct inode *dir = data->dir->d_inode; | |
1577 | struct nfs_openres *o_res = &data->o_res; | |
1578 | int status; | |
1579 | ||
1580 | status = nfs4_run_open_task(data, 1); | |
1581 | if (status != 0 || !data->rpc_done) | |
1582 | return status; | |
1583 | ||
6926afd1 TM |
1584 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
1585 | ||
b257957e AB |
1586 | nfs_refresh_inode(dir, o_res->dir_attr); |
1587 | ||
1588 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { | |
1589 | status = _nfs4_proc_open_confirm(data); | |
1590 | if (status != 0) | |
1591 | return status; | |
1592 | } | |
1593 | ||
1594 | return status; | |
1595 | } | |
1596 | ||
1597 | /* | |
1598 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1599 | */ | |
1600 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1601 | { | |
1602 | struct inode *dir = data->dir->d_inode; | |
1603 | struct nfs_server *server = NFS_SERVER(dir); | |
1604 | struct nfs_openargs *o_arg = &data->o_arg; | |
1605 | struct nfs_openres *o_res = &data->o_res; | |
1606 | int status; | |
1607 | ||
1608 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
1609 | if (!data->rpc_done) |
1610 | return status; | |
1611 | if (status != 0) { | |
1612 | if (status == -NFS4ERR_BADNAME && | |
1613 | !(o_arg->open_flags & O_CREAT)) | |
1614 | return -ENOENT; | |
24ac23ab | 1615 | return status; |
08ef7bd3 | 1616 | } |
24ac23ab | 1617 | |
6926afd1 TM |
1618 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
1619 | ||
56ae19f3 TM |
1620 | if (o_arg->open_flags & O_CREAT) { |
1621 | update_changeattr(dir, &o_res->cinfo); | |
1622 | nfs_post_op_update_inode(dir, o_res->dir_attr); | |
1623 | } else | |
1624 | nfs_refresh_inode(dir, o_res->dir_attr); | |
0df5dd4a TM |
1625 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1626 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1627 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1628 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1629 | if (status != 0) |
24ac23ab | 1630 | return status; |
1da177e4 LT |
1631 | } |
1632 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1633 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1634 | return 0; |
1da177e4 LT |
1635 | } |
1636 | ||
d83217c1 | 1637 | static int nfs4_client_recover_expired_lease(struct nfs_client *clp) |
58d9714a | 1638 | { |
a78cb57a | 1639 | unsigned int loop; |
6b30954e | 1640 | int ret; |
58d9714a | 1641 | |
a78cb57a | 1642 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { |
65de872e | 1643 | ret = nfs4_wait_clnt_recover(clp); |
6b30954e | 1644 | if (ret != 0) |
a78cb57a | 1645 | break; |
e598d843 TM |
1646 | if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) && |
1647 | !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state)) | |
6b30954e | 1648 | break; |
0400a6b0 | 1649 | nfs4_schedule_state_manager(clp); |
a78cb57a | 1650 | ret = -EIO; |
6b30954e | 1651 | } |
a78cb57a | 1652 | return ret; |
58d9714a TM |
1653 | } |
1654 | ||
d83217c1 AA |
1655 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1656 | { | |
1657 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1658 | } | |
1659 | ||
1da177e4 LT |
1660 | /* |
1661 | * OPEN_EXPIRED: | |
1662 | * reclaim state on the server after a network partition. | |
1663 | * Assumes caller holds the appropriate lock | |
1664 | */ | |
539cd03a | 1665 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1666 | { |
e56e0b78 | 1667 | struct nfs4_opendata *opendata; |
864472e9 | 1668 | int ret; |
1da177e4 | 1669 | |
6f220ed5 TM |
1670 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1671 | if (IS_ERR(opendata)) | |
1672 | return PTR_ERR(opendata); | |
864472e9 | 1673 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1674 | if (ret == -ESTALE) |
3d4ff43d | 1675 | d_drop(ctx->dentry); |
c6d00e63 | 1676 | nfs4_opendata_put(opendata); |
864472e9 | 1677 | return ret; |
1da177e4 LT |
1678 | } |
1679 | ||
a9ed2e25 | 1680 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1681 | { |
539cd03a | 1682 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1683 | struct nfs4_exception exception = { }; |
1684 | int err; | |
1685 | ||
1686 | do { | |
539cd03a | 1687 | err = _nfs4_open_expired(ctx, state); |
a9ed2e25 TM |
1688 | switch (err) { |
1689 | default: | |
1690 | goto out; | |
1691 | case -NFS4ERR_GRACE: | |
1692 | case -NFS4ERR_DELAY: | |
1693 | nfs4_handle_exception(server, err, &exception); | |
1694 | err = 0; | |
1695 | } | |
202b50dc | 1696 | } while (exception.retry); |
a9ed2e25 | 1697 | out: |
202b50dc TM |
1698 | return err; |
1699 | } | |
1700 | ||
1da177e4 LT |
1701 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1702 | { | |
1da177e4 | 1703 | struct nfs_open_context *ctx; |
864472e9 | 1704 | int ret; |
1da177e4 | 1705 | |
864472e9 TM |
1706 | ctx = nfs4_state_find_open_context(state); |
1707 | if (IS_ERR(ctx)) | |
1708 | return PTR_ERR(ctx); | |
539cd03a | 1709 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1710 | put_nfs_open_context(ctx); |
1711 | return ret; | |
1da177e4 LT |
1712 | } |
1713 | ||
f062eb6c BS |
1714 | #if defined(CONFIG_NFS_V4_1) |
1715 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
1716 | { | |
1717 | int status; | |
1718 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1719 | ||
1720 | status = nfs41_test_stateid(server, state); | |
1721 | if (status == NFS_OK) | |
1722 | return 0; | |
1723 | nfs41_free_stateid(server, state); | |
1724 | return nfs4_open_expired(sp, state); | |
1725 | } | |
1726 | #endif | |
1727 | ||
aa53ed54 JL |
1728 | /* |
1729 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1730 | * fields corresponding to attributes that were used to store the verifier. | |
1731 | * Make sure we clobber those fields in the later setattr call | |
1732 | */ | |
1733 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1734 | { | |
1735 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1736 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1737 | sattr->ia_valid |= ATTR_ATIME; | |
1738 | ||
1739 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1740 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1741 | sattr->ia_valid |= ATTR_MTIME; | |
1742 | } | |
1743 | ||
1da177e4 | 1744 | /* |
24ac23ab | 1745 | * Returns a referenced nfs4_state |
1da177e4 | 1746 | */ |
82a2c1b7 | 1747 | 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 |
1748 | { |
1749 | struct nfs4_state_owner *sp; | |
1750 | struct nfs4_state *state = NULL; | |
1751 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1752 | struct nfs4_opendata *opendata; |
aac00a8d | 1753 | int status; |
1da177e4 LT |
1754 | |
1755 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 1756 | status = -ENOMEM; |
d1e284d5 TM |
1757 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
1758 | if (sp == NULL) { | |
1da177e4 LT |
1759 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
1760 | goto out_err; | |
1761 | } | |
58d9714a TM |
1762 | status = nfs4_recover_expired_lease(server); |
1763 | if (status != 0) | |
b4454fe1 | 1764 | goto err_put_state_owner; |
82a2c1b7 AV |
1765 | if (dentry->d_inode != NULL) |
1766 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 1767 | status = -ENOMEM; |
82a2c1b7 | 1768 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, GFP_KERNEL); |
e56e0b78 | 1769 | if (opendata == NULL) |
95d35cb4 | 1770 | goto err_put_state_owner; |
1da177e4 | 1771 | |
82a2c1b7 AV |
1772 | if (dentry->d_inode != NULL) |
1773 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 1774 | |
24ac23ab | 1775 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1776 | if (status != 0) |
c6d00e63 | 1777 | goto err_opendata_put; |
1da177e4 | 1778 | |
24ac23ab | 1779 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1780 | status = PTR_ERR(state); |
1781 | if (IS_ERR(state)) | |
c6d00e63 | 1782 | goto err_opendata_put; |
0df5dd4a | 1783 | if (server->caps & NFS_CAP_POSIX_LOCK) |
8e469ebd | 1784 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); |
0ab64e0e TM |
1785 | |
1786 | if (opendata->o_arg.open_flags & O_EXCL) { | |
1787 | nfs4_exclusive_attrset(opendata, sattr); | |
1788 | ||
1789 | nfs_fattr_init(opendata->o_res.f_attr); | |
1790 | status = nfs4_do_setattr(state->inode, cred, | |
1791 | opendata->o_res.f_attr, sattr, | |
1792 | state); | |
1793 | if (status == 0) | |
1794 | nfs_setattr_update_inode(state->inode, sattr); | |
1795 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
1796 | } | |
c6d00e63 | 1797 | nfs4_opendata_put(opendata); |
1da177e4 | 1798 | nfs4_put_state_owner(sp); |
1da177e4 LT |
1799 | *res = state; |
1800 | return 0; | |
c6d00e63 TM |
1801 | err_opendata_put: |
1802 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
1803 | err_put_state_owner: |
1804 | nfs4_put_state_owner(sp); | |
1da177e4 | 1805 | out_err: |
1da177e4 LT |
1806 | *res = NULL; |
1807 | return status; | |
1808 | } | |
1809 | ||
1810 | ||
82a2c1b7 | 1811 | 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 |
1812 | { |
1813 | struct nfs4_exception exception = { }; | |
1814 | struct nfs4_state *res; | |
1815 | int status; | |
1816 | ||
1817 | do { | |
82a2c1b7 | 1818 | status = _nfs4_do_open(dir, dentry, fmode, flags, sattr, cred, &res); |
1da177e4 LT |
1819 | if (status == 0) |
1820 | break; | |
1821 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1822 | * book-keeping w.r.t. state-changing operations | |
1823 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1824 | * It is actually a sign of a bug on the client or on the server. | |
1825 | * | |
1826 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1827 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1828 | * have unhashed the old state_owner for us, and that we can |
1829 | * therefore safely retry using a new one. We should still warn | |
1830 | * the user though... | |
1831 | */ | |
1832 | if (status == -NFS4ERR_BAD_SEQID) { | |
6f43ddcc TM |
1833 | printk(KERN_WARNING "NFS: v4 server %s " |
1834 | " returned a bad sequence-id error!\n", | |
1835 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1836 | exception.retry = 1; |
1837 | continue; | |
1838 | } | |
550f5747 TM |
1839 | /* |
1840 | * BAD_STATEID on OPEN means that the server cancelled our | |
1841 | * state before it received the OPEN_CONFIRM. | |
1842 | * Recover by retrying the request as per the discussion | |
1843 | * on Page 181 of RFC3530. | |
1844 | */ | |
1845 | if (status == -NFS4ERR_BAD_STATEID) { | |
1846 | exception.retry = 1; | |
1847 | continue; | |
1848 | } | |
aac00a8d TM |
1849 | if (status == -EAGAIN) { |
1850 | /* We must have found a delegation */ | |
1851 | exception.retry = 1; | |
1852 | continue; | |
1853 | } | |
1da177e4 LT |
1854 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1855 | status, &exception)); | |
1856 | } while (exception.retry); | |
1857 | return res; | |
1858 | } | |
1859 | ||
659bfcd6 TM |
1860 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1861 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1862 | struct nfs4_state *state) | |
1da177e4 | 1863 | { |
3e4f6290 | 1864 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1865 | struct nfs_setattrargs arg = { |
3e4f6290 | 1866 | .fh = NFS_FH(inode), |
1da177e4 LT |
1867 | .iap = sattr, |
1868 | .server = server, | |
1869 | .bitmask = server->attr_bitmask, | |
1870 | }; | |
1871 | struct nfs_setattrres res = { | |
1872 | .fattr = fattr, | |
1873 | .server = server, | |
1874 | }; | |
1875 | struct rpc_message msg = { | |
659bfcd6 TM |
1876 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
1877 | .rpc_argp = &arg, | |
1878 | .rpc_resp = &res, | |
1879 | .rpc_cred = cred, | |
1da177e4 | 1880 | }; |
26e976a8 | 1881 | unsigned long timestamp = jiffies; |
65e4308d | 1882 | int status; |
1da177e4 | 1883 | |
0e574af1 | 1884 | nfs_fattr_init(fattr); |
1da177e4 | 1885 | |
3e4f6290 TM |
1886 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) { |
1887 | /* Use that stateid */ | |
1888 | } else if (state != NULL) { | |
77041ed9 | 1889 | nfs4_copy_stateid(&arg.stateid, state, current->files, current->tgid); |
08e9eac4 | 1890 | } else |
1da177e4 LT |
1891 | memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid)); |
1892 | ||
7c513058 | 1893 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
1894 | if (status == 0 && state != NULL) |
1895 | renew_lease(server, timestamp); | |
65e4308d | 1896 | return status; |
1da177e4 LT |
1897 | } |
1898 | ||
659bfcd6 TM |
1899 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1900 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1901 | struct nfs4_state *state) | |
1da177e4 | 1902 | { |
3e4f6290 | 1903 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
1904 | struct nfs4_exception exception = { }; |
1905 | int err; | |
1906 | do { | |
1907 | err = nfs4_handle_exception(server, | |
659bfcd6 | 1908 | _nfs4_do_setattr(inode, cred, fattr, sattr, state), |
1da177e4 LT |
1909 | &exception); |
1910 | } while (exception.retry); | |
1911 | return err; | |
1912 | } | |
1913 | ||
1914 | struct nfs4_closedata { | |
1915 | struct inode *inode; | |
1916 | struct nfs4_state *state; | |
1917 | struct nfs_closeargs arg; | |
1918 | struct nfs_closeres res; | |
516a6af6 | 1919 | struct nfs_fattr fattr; |
26e976a8 | 1920 | unsigned long timestamp; |
f7e8917a FI |
1921 | bool roc; |
1922 | u32 roc_barrier; | |
1da177e4 LT |
1923 | }; |
1924 | ||
963d8fe5 | 1925 | static void nfs4_free_closedata(void *data) |
9512135d | 1926 | { |
963d8fe5 TM |
1927 | struct nfs4_closedata *calldata = data; |
1928 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 1929 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 1930 | |
f7e8917a FI |
1931 | if (calldata->roc) |
1932 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
1933 | nfs4_put_open_state(calldata->state); |
1934 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 1935 | nfs4_put_state_owner(sp); |
643168c2 | 1936 | nfs_sb_deactive(sb); |
9512135d TM |
1937 | kfree(calldata); |
1938 | } | |
1939 | ||
88069f77 TM |
1940 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
1941 | fmode_t fmode) | |
1942 | { | |
1943 | spin_lock(&state->owner->so_lock); | |
1944 | if (!(fmode & FMODE_READ)) | |
1945 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1946 | if (!(fmode & FMODE_WRITE)) | |
1947 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1948 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1949 | spin_unlock(&state->owner->so_lock); | |
1950 | } | |
1951 | ||
963d8fe5 | 1952 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 1953 | { |
963d8fe5 | 1954 | struct nfs4_closedata *calldata = data; |
1da177e4 | 1955 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
1956 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
1957 | ||
14516c3a TM |
1958 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
1959 | return; | |
1da177e4 LT |
1960 | /* hmm. we are done with the inode, and in the process of freeing |
1961 | * the state_owner. we keep this around to process errors | |
1962 | */ | |
1da177e4 LT |
1963 | switch (task->tk_status) { |
1964 | case 0: | |
f7e8917a FI |
1965 | if (calldata->roc) |
1966 | pnfs_roc_set_barrier(state->inode, | |
1967 | calldata->roc_barrier); | |
45328c35 | 1968 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 1969 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
1970 | nfs4_close_clear_stateid_flags(state, |
1971 | calldata->arg.fmode); | |
1da177e4 LT |
1972 | break; |
1973 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
1974 | case -NFS4ERR_OLD_STATEID: |
1975 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 1976 | case -NFS4ERR_EXPIRED: |
dc0b027d | 1977 | if (calldata->arg.fmode == 0) |
9e33bed5 | 1978 | break; |
1da177e4 | 1979 | default: |
72211dbe TM |
1980 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
1981 | rpc_restart_call_prepare(task); | |
1da177e4 | 1982 | } |
72211dbe | 1983 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 1984 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
1da177e4 LT |
1985 | } |
1986 | ||
4ce70ada | 1987 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 1988 | { |
4ce70ada | 1989 | struct nfs4_closedata *calldata = data; |
9512135d | 1990 | struct nfs4_state *state = calldata->state; |
88069f77 | 1991 | int call_close = 0; |
9512135d | 1992 | |
963d8fe5 | 1993 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 1994 | return; |
003707c7 | 1995 | |
88069f77 TM |
1996 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
1997 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 1998 | spin_lock(&state->owner->so_lock); |
003707c7 | 1999 | /* Calculate the change in open mode */ |
e7616923 | 2000 | if (state->n_rdwr == 0) { |
003707c7 | 2001 | if (state->n_rdonly == 0) { |
88069f77 TM |
2002 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
2003 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2004 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
2005 | } |
2006 | if (state->n_wronly == 0) { | |
88069f77 TM |
2007 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
2008 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2009 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 2010 | } |
e7616923 | 2011 | } |
4cecb76f | 2012 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2013 | |
2014 | if (!call_close) { | |
963d8fe5 TM |
2015 | /* Note: exit _without_ calling nfs4_close_done */ |
2016 | task->tk_action = NULL; | |
9512135d TM |
2017 | return; |
2018 | } | |
88069f77 | 2019 | |
f7e8917a | 2020 | if (calldata->arg.fmode == 0) { |
88069f77 | 2021 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a FI |
2022 | if (calldata->roc && |
2023 | pnfs_roc_drain(calldata->inode, &calldata->roc_barrier)) { | |
2024 | rpc_sleep_on(&NFS_SERVER(calldata->inode)->roc_rpcwaitq, | |
2025 | task, NULL); | |
2026 | return; | |
2027 | } | |
2028 | } | |
88069f77 | 2029 | |
516a6af6 | 2030 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2031 | calldata->timestamp = jiffies; |
035168ab | 2032 | if (nfs4_setup_sequence(NFS_SERVER(calldata->inode), |
19ddab06 AA |
2033 | &calldata->arg.seq_args, &calldata->res.seq_res, |
2034 | 1, task)) | |
2035 | return; | |
5138fde0 | 2036 | rpc_call_start(task); |
1da177e4 LT |
2037 | } |
2038 | ||
963d8fe5 | 2039 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2040 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2041 | .rpc_call_done = nfs4_close_done, |
2042 | .rpc_release = nfs4_free_closedata, | |
2043 | }; | |
2044 | ||
1da177e4 LT |
2045 | /* |
2046 | * It is possible for data to be read/written from a mem-mapped file | |
2047 | * after the sys_close call (which hits the vfs layer as a flush). | |
2048 | * This means that we can't safely call nfsv4 close on a file until | |
2049 | * the inode is cleared. This in turn means that we are not good | |
2050 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2051 | * share state even when we are done with one of the three share | |
2052 | * stateid's in the inode. | |
2053 | * | |
2054 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2055 | */ | |
643168c2 | 2056 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait, bool roc) |
1da177e4 | 2057 | { |
4a35bd41 | 2058 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2059 | struct nfs4_closedata *calldata; |
b39e625b TM |
2060 | struct nfs4_state_owner *sp = state->owner; |
2061 | struct rpc_task *task; | |
5138fde0 TM |
2062 | struct rpc_message msg = { |
2063 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2064 | .rpc_cred = state->owner->so_cred, | |
2065 | }; | |
c970aa85 TM |
2066 | struct rpc_task_setup task_setup_data = { |
2067 | .rpc_client = server->client, | |
5138fde0 | 2068 | .rpc_message = &msg, |
c970aa85 | 2069 | .callback_ops = &nfs4_close_ops, |
101070ca | 2070 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2071 | .flags = RPC_TASK_ASYNC, |
2072 | }; | |
9512135d | 2073 | int status = -ENOMEM; |
1da177e4 | 2074 | |
8535b2be | 2075 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2076 | if (calldata == NULL) |
9512135d | 2077 | goto out; |
4a35bd41 | 2078 | calldata->inode = state->inode; |
1da177e4 | 2079 | calldata->state = state; |
4a35bd41 | 2080 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2081 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2082 | /* Serialization for the sequence id */ |
8535b2be | 2083 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2084 | if (calldata->arg.seqid == NULL) |
2085 | goto out_free_calldata; | |
dc0b027d | 2086 | calldata->arg.fmode = 0; |
a65318bf | 2087 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2088 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2089 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2090 | calldata->res.server = server; |
f7e8917a | 2091 | calldata->roc = roc; |
643168c2 | 2092 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2093 | |
1174dd1f TM |
2094 | msg.rpc_argp = &calldata->arg; |
2095 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2096 | task_setup_data.callback_data = calldata; |
2097 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2098 | if (IS_ERR(task)) |
2099 | return PTR_ERR(task); | |
a49c3c77 TM |
2100 | status = 0; |
2101 | if (wait) | |
2102 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2103 | rpc_put_task(task); |
a49c3c77 | 2104 | return status; |
9512135d TM |
2105 | out_free_calldata: |
2106 | kfree(calldata); | |
2107 | out: | |
f7e8917a FI |
2108 | if (roc) |
2109 | pnfs_roc_release(state->inode); | |
b39e625b TM |
2110 | nfs4_put_open_state(state); |
2111 | nfs4_put_state_owner(sp); | |
9512135d | 2112 | return status; |
1da177e4 LT |
2113 | } |
2114 | ||
2b484297 | 2115 | static struct inode * |
cd9a1c0e | 2116 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2117 | { |
1da177e4 | 2118 | struct nfs4_state *state; |
1da177e4 | 2119 | |
565277f6 | 2120 | /* Protect against concurrent sillydeletes */ |
3d4ff43d | 2121 | state = nfs4_do_open(dir, ctx->dentry, ctx->mode, open_flags, attr, ctx->cred); |
f46e0bd3 TM |
2122 | if (IS_ERR(state)) |
2123 | return ERR_CAST(state); | |
cd9a1c0e | 2124 | ctx->state = state; |
f46e0bd3 | 2125 | return igrab(state->inode); |
1da177e4 LT |
2126 | } |
2127 | ||
1185a552 | 2128 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2129 | { |
2130 | if (ctx->state == NULL) | |
2131 | return; | |
2132 | if (is_sync) | |
643168c2 | 2133 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2134 | else |
643168c2 | 2135 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2136 | } |
1da177e4 LT |
2137 | |
2138 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2139 | { | |
43652ad5 BH |
2140 | struct nfs4_server_caps_arg args = { |
2141 | .fhandle = fhandle, | |
2142 | }; | |
1da177e4 LT |
2143 | struct nfs4_server_caps_res res = {}; |
2144 | struct rpc_message msg = { | |
2145 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2146 | .rpc_argp = &args, |
1da177e4 LT |
2147 | .rpc_resp = &res, |
2148 | }; | |
2149 | int status; | |
2150 | ||
7c513058 | 2151 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2152 | if (status == 0) { |
2153 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2154 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2155 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2156 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2157 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2158 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2159 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2160 | server->caps |= NFS_CAP_ACLS; | |
2161 | if (res.has_links != 0) | |
2162 | server->caps |= NFS_CAP_HARDLINKS; | |
2163 | if (res.has_symlinks != 0) | |
2164 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2165 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2166 | server->caps |= NFS_CAP_FILEID; | |
2167 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2168 | server->caps |= NFS_CAP_MODE; | |
2169 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2170 | server->caps |= NFS_CAP_NLINK; | |
2171 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2172 | server->caps |= NFS_CAP_OWNER; | |
2173 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2174 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2175 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2176 | server->caps |= NFS_CAP_ATIME; | |
2177 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2178 | server->caps |= NFS_CAP_CTIME; | |
2179 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2180 | server->caps |= NFS_CAP_MTIME; | |
2181 | ||
a65318bf TM |
2182 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2183 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2184 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 LT |
2185 | server->acl_bitmask = res.acl_bitmask; |
2186 | } | |
cccef3b9 | 2187 | |
1da177e4 LT |
2188 | return status; |
2189 | } | |
2190 | ||
55a97593 | 2191 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2192 | { |
2193 | struct nfs4_exception exception = { }; | |
2194 | int err; | |
2195 | do { | |
2196 | err = nfs4_handle_exception(server, | |
2197 | _nfs4_server_capabilities(server, fhandle), | |
2198 | &exception); | |
2199 | } while (exception.retry); | |
2200 | return err; | |
2201 | } | |
2202 | ||
2203 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2204 | struct nfs_fsinfo *info) | |
2205 | { | |
1da177e4 LT |
2206 | struct nfs4_lookup_root_arg args = { |
2207 | .bitmask = nfs4_fattr_bitmap, | |
2208 | }; | |
2209 | struct nfs4_lookup_res res = { | |
2210 | .server = server, | |
0e574af1 | 2211 | .fattr = info->fattr, |
1da177e4 LT |
2212 | .fh = fhandle, |
2213 | }; | |
2214 | struct rpc_message msg = { | |
2215 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2216 | .rpc_argp = &args, | |
2217 | .rpc_resp = &res, | |
2218 | }; | |
008f55d0 | 2219 | |
0e574af1 | 2220 | nfs_fattr_init(info->fattr); |
7c513058 | 2221 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2222 | } |
2223 | ||
2224 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2225 | struct nfs_fsinfo *info) | |
2226 | { | |
2227 | struct nfs4_exception exception = { }; | |
2228 | int err; | |
2229 | do { | |
fb8a5ba8 BS |
2230 | err = _nfs4_lookup_root(server, fhandle, info); |
2231 | switch (err) { | |
2232 | case 0: | |
2233 | case -NFS4ERR_WRONGSEC: | |
2234 | break; | |
2235 | default: | |
2236 | err = nfs4_handle_exception(server, err, &exception); | |
2237 | } | |
1da177e4 LT |
2238 | } while (exception.retry); |
2239 | return err; | |
2240 | } | |
2241 | ||
8f70e95f BS |
2242 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2243 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2244 | { | |
2245 | struct rpc_auth *auth; | |
2246 | int ret; | |
2247 | ||
2248 | auth = rpcauth_create(flavor, server->client); | |
2249 | if (!auth) { | |
2250 | ret = -EIO; | |
2251 | goto out; | |
2252 | } | |
2253 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2254 | out: |
2255 | return ret; | |
2256 | } | |
2257 | ||
801a16dc | 2258 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2259 | struct nfs_fsinfo *info) |
1da177e4 | 2260 | { |
8f70e95f | 2261 | int i, len, status = 0; |
0fabee24 | 2262 | rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS]; |
1da177e4 | 2263 | |
801a16dc BS |
2264 | len = gss_mech_list_pseudoflavors(&flav_array[0]); |
2265 | flav_array[len] = RPC_AUTH_NULL; | |
2266 | len += 1; | |
8f70e95f BS |
2267 | |
2268 | for (i = 0; i < len; i++) { | |
2269 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); | |
fb8a5ba8 | 2270 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2271 | continue; |
2272 | break; | |
8f70e95f | 2273 | } |
fb8a5ba8 BS |
2274 | /* |
2275 | * -EACCESS could mean that the user doesn't have correct permissions | |
2276 | * to access the mount. It could also mean that we tried to mount | |
2277 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2278 | * existing mount programs don't handle -EACCES very well so it should | |
2279 | * be mapped to -EPERM instead. | |
2280 | */ | |
2281 | if (status == -EACCES) | |
2282 | status = -EPERM; | |
801a16dc BS |
2283 | return status; |
2284 | } | |
2285 | ||
2286 | /* | |
2287 | * get the file handle for the "/" directory on the server | |
2288 | */ | |
2289 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2290 | struct nfs_fsinfo *info) | |
2291 | { | |
fca78d6d | 2292 | int minor_version = server->nfs_client->cl_minorversion; |
801a16dc | 2293 | int status = nfs4_lookup_root(server, fhandle, info); |
fb8a5ba8 BS |
2294 | if ((status == -NFS4ERR_WRONGSEC) && !(server->flags & NFS_MOUNT_SECFLAVOUR)) |
2295 | /* | |
2296 | * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM | |
2297 | * by nfs4_map_errors() as this function exits. | |
2298 | */ | |
fca78d6d | 2299 | status = nfs_v4_minor_ops[minor_version]->find_root_sec(server, fhandle, info); |
1da177e4 LT |
2300 | if (status == 0) |
2301 | status = nfs4_server_capabilities(server, fhandle); | |
2302 | if (status == 0) | |
2303 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2304 | return nfs4_map_errors(status); |
1da177e4 LT |
2305 | } |
2306 | ||
533eb461 | 2307 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); |
6b97fd3d MN |
2308 | /* |
2309 | * Get locations and (maybe) other attributes of a referral. | |
2310 | * Note that we'll actually follow the referral later when | |
2311 | * we detect fsid mismatch in inode revalidation | |
2312 | */ | |
533eb461 AA |
2313 | static int nfs4_get_referral(struct inode *dir, const struct qstr *name, |
2314 | struct nfs_fattr *fattr, struct nfs_fh *fhandle) | |
6b97fd3d MN |
2315 | { |
2316 | int status = -ENOMEM; | |
2317 | struct page *page = NULL; | |
2318 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2319 | |
2320 | page = alloc_page(GFP_KERNEL); | |
2321 | if (page == NULL) | |
2322 | goto out; | |
2323 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2324 | if (locations == NULL) | |
2325 | goto out; | |
2326 | ||
c228fd3a | 2327 | status = nfs4_proc_fs_locations(dir, name, locations, page); |
6b97fd3d MN |
2328 | if (status != 0) |
2329 | goto out; | |
2330 | /* Make sure server returned a different fsid for the referral */ | |
2331 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2332 | dprintk("%s: server did not return a different fsid for" |
2333 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2334 | status = -EIO; |
2335 | goto out; | |
2336 | } | |
533eb461 AA |
2337 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2338 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2339 | |
533eb461 | 2340 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2341 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2342 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2343 | out: | |
2344 | if (page) | |
2345 | __free_page(page); | |
5d7ca35a | 2346 | kfree(locations); |
6b97fd3d MN |
2347 | return status; |
2348 | } | |
2349 | ||
1da177e4 LT |
2350 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2351 | { | |
2352 | struct nfs4_getattr_arg args = { | |
2353 | .fh = fhandle, | |
2354 | .bitmask = server->attr_bitmask, | |
2355 | }; | |
2356 | struct nfs4_getattr_res res = { | |
2357 | .fattr = fattr, | |
2358 | .server = server, | |
2359 | }; | |
2360 | struct rpc_message msg = { | |
2361 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2362 | .rpc_argp = &args, | |
2363 | .rpc_resp = &res, | |
2364 | }; | |
2365 | ||
0e574af1 | 2366 | nfs_fattr_init(fattr); |
7c513058 | 2367 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2368 | } |
2369 | ||
2370 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2371 | { | |
2372 | struct nfs4_exception exception = { }; | |
2373 | int err; | |
2374 | do { | |
2375 | err = nfs4_handle_exception(server, | |
2376 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2377 | &exception); | |
2378 | } while (exception.retry); | |
2379 | return err; | |
2380 | } | |
2381 | ||
2382 | /* | |
2383 | * The file is not closed if it is opened due to the a request to change | |
2384 | * the size of the file. The open call will not be needed once the | |
2385 | * VFS layer lookup-intents are implemented. | |
2386 | * | |
2387 | * Close is called when the inode is destroyed. | |
2388 | * If we haven't opened the file for O_WRONLY, we | |
2389 | * need to in the size_change case to obtain a stateid. | |
2390 | * | |
2391 | * Got race? | |
2392 | * Because OPEN is always done by name in nfsv4, it is | |
2393 | * possible that we opened a different file by the same | |
2394 | * name. We can recognize this race condition, but we | |
2395 | * can't do anything about it besides returning an error. | |
2396 | * | |
2397 | * This will be fixed with VFS changes (lookup-intent). | |
2398 | */ | |
2399 | static int | |
2400 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2401 | struct iattr *sattr) | |
2402 | { | |
08e9eac4 | 2403 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2404 | struct rpc_cred *cred = NULL; |
d530838b | 2405 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2406 | int status; |
2407 | ||
8a1636c4 BH |
2408 | if (pnfs_ld_layoutret_on_setattr(inode)) |
2409 | pnfs_return_layout(inode); | |
2410 | ||
0e574af1 | 2411 | nfs_fattr_init(fattr); |
1da177e4 | 2412 | |
d530838b | 2413 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2414 | if (sattr->ia_valid & ATTR_FILE) { |
2415 | struct nfs_open_context *ctx; | |
2416 | ||
2417 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2418 | if (ctx) { |
2419 | cred = ctx->cred; | |
2420 | state = ctx->state; | |
2421 | } | |
659bfcd6 | 2422 | } |
08e9eac4 | 2423 | |
659bfcd6 | 2424 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2425 | if (status == 0) |
2426 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2427 | return status; |
2428 | } | |
2429 | ||
0c2e53f1 TM |
2430 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
2431 | const struct qstr *name, struct nfs_fh *fhandle, | |
2432 | struct nfs_fattr *fattr) | |
2b3de441 | 2433 | { |
0c2e53f1 | 2434 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
2435 | int status; |
2436 | struct nfs4_lookup_arg args = { | |
2437 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 2438 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
2439 | .name = name, |
2440 | }; | |
2441 | struct nfs4_lookup_res res = { | |
2442 | .server = server, | |
2443 | .fattr = fattr, | |
2444 | .fh = fhandle, | |
2445 | }; | |
2446 | struct rpc_message msg = { | |
2447 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2448 | .rpc_argp = &args, | |
2449 | .rpc_resp = &res, | |
2450 | }; | |
2451 | ||
2452 | nfs_fattr_init(fattr); | |
2453 | ||
1da177e4 | 2454 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 2455 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2456 | dprintk("NFS reply lookup: %d\n", status); |
2457 | return status; | |
2458 | } | |
2459 | ||
7ebb9315 BS |
2460 | void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr, struct nfs_fh *fh) |
2461 | { | |
2462 | memset(fh, 0, sizeof(struct nfs_fh)); | |
2463 | fattr->fsid.major = 1; | |
2464 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
2465 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_FSID | NFS_ATTR_FATTR_MOUNTPOINT; | |
2466 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; | |
2467 | fattr->nlink = 2; | |
2468 | } | |
2469 | ||
7c513058 BS |
2470 | static int nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, struct qstr *name, |
2471 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
1da177e4 LT |
2472 | { |
2473 | struct nfs4_exception exception = { }; | |
2474 | int err; | |
2475 | do { | |
0c2e53f1 TM |
2476 | int status; |
2477 | ||
2478 | status = _nfs4_proc_lookup(clnt, dir, name, fhandle, fattr); | |
2479 | switch (status) { | |
08ef7bd3 TM |
2480 | case -NFS4ERR_BADNAME: |
2481 | return -ENOENT; | |
0c2e53f1 | 2482 | case -NFS4ERR_MOVED: |
a6f498a8 | 2483 | return nfs4_get_referral(dir, name, fattr, fhandle); |
0c2e53f1 | 2484 | case -NFS4ERR_WRONGSEC: |
7ebb9315 | 2485 | nfs_fixup_secinfo_attributes(fattr, fhandle); |
0c2e53f1 TM |
2486 | } |
2487 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2488 | status, &exception); | |
1da177e4 LT |
2489 | } while (exception.retry); |
2490 | return err; | |
2491 | } | |
2492 | ||
2493 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2494 | { | |
76b32999 | 2495 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2496 | struct nfs4_accessargs args = { |
2497 | .fh = NFS_FH(inode), | |
76b32999 TM |
2498 | .bitmask = server->attr_bitmask, |
2499 | }; | |
2500 | struct nfs4_accessres res = { | |
2501 | .server = server, | |
1da177e4 | 2502 | }; |
1da177e4 LT |
2503 | struct rpc_message msg = { |
2504 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2505 | .rpc_argp = &args, | |
2506 | .rpc_resp = &res, | |
2507 | .rpc_cred = entry->cred, | |
2508 | }; | |
2509 | int mode = entry->mask; | |
2510 | int status; | |
2511 | ||
2512 | /* | |
2513 | * Determine which access bits we want to ask for... | |
2514 | */ | |
2515 | if (mode & MAY_READ) | |
2516 | args.access |= NFS4_ACCESS_READ; | |
2517 | if (S_ISDIR(inode->i_mode)) { | |
2518 | if (mode & MAY_WRITE) | |
2519 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2520 | if (mode & MAY_EXEC) | |
2521 | args.access |= NFS4_ACCESS_LOOKUP; | |
2522 | } else { | |
2523 | if (mode & MAY_WRITE) | |
2524 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2525 | if (mode & MAY_EXEC) | |
2526 | args.access |= NFS4_ACCESS_EXECUTE; | |
2527 | } | |
c407d41a TM |
2528 | |
2529 | res.fattr = nfs_alloc_fattr(); | |
2530 | if (res.fattr == NULL) | |
2531 | return -ENOMEM; | |
2532 | ||
7c513058 | 2533 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2534 | if (!status) { |
2535 | entry->mask = 0; | |
2536 | if (res.access & NFS4_ACCESS_READ) | |
2537 | entry->mask |= MAY_READ; | |
2538 | if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE)) | |
2539 | entry->mask |= MAY_WRITE; | |
2540 | if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE)) | |
2541 | entry->mask |= MAY_EXEC; | |
c407d41a | 2542 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2543 | } |
c407d41a | 2544 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2545 | return status; |
2546 | } | |
2547 | ||
2548 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2549 | { | |
2550 | struct nfs4_exception exception = { }; | |
2551 | int err; | |
2552 | do { | |
2553 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2554 | _nfs4_proc_access(inode, entry), | |
2555 | &exception); | |
2556 | } while (exception.retry); | |
2557 | return err; | |
2558 | } | |
2559 | ||
2560 | /* | |
2561 | * TODO: For the time being, we don't try to get any attributes | |
2562 | * along with any of the zero-copy operations READ, READDIR, | |
2563 | * READLINK, WRITE. | |
2564 | * | |
2565 | * In the case of the first three, we want to put the GETATTR | |
2566 | * after the read-type operation -- this is because it is hard | |
2567 | * to predict the length of a GETATTR response in v4, and thus | |
2568 | * align the READ data correctly. This means that the GETATTR | |
2569 | * may end up partially falling into the page cache, and we should | |
2570 | * shift it into the 'tail' of the xdr_buf before processing. | |
2571 | * To do this efficiently, we need to know the total length | |
2572 | * of data received, which doesn't seem to be available outside | |
2573 | * of the RPC layer. | |
2574 | * | |
2575 | * In the case of WRITE, we also want to put the GETATTR after | |
2576 | * the operation -- in this case because we want to make sure | |
2577 | * we get the post-operation mtime and size. This means that | |
2578 | * we can't use xdr_encode_pages() as written: we need a variant | |
2579 | * of it which would leave room in the 'tail' iovec. | |
2580 | * | |
2581 | * Both of these changes to the XDR layer would in fact be quite | |
2582 | * minor, but I decided to leave them for a subsequent patch. | |
2583 | */ | |
2584 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2585 | unsigned int pgbase, unsigned int pglen) | |
2586 | { | |
2587 | struct nfs4_readlink args = { | |
2588 | .fh = NFS_FH(inode), | |
2589 | .pgbase = pgbase, | |
2590 | .pglen = pglen, | |
2591 | .pages = &page, | |
2592 | }; | |
f50c7000 | 2593 | struct nfs4_readlink_res res; |
1da177e4 LT |
2594 | struct rpc_message msg = { |
2595 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2596 | .rpc_argp = &args, | |
f50c7000 | 2597 | .rpc_resp = &res, |
1da177e4 LT |
2598 | }; |
2599 | ||
7c513058 | 2600 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2601 | } |
2602 | ||
2603 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2604 | unsigned int pgbase, unsigned int pglen) | |
2605 | { | |
2606 | struct nfs4_exception exception = { }; | |
2607 | int err; | |
2608 | do { | |
2609 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2610 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2611 | &exception); | |
2612 | } while (exception.retry); | |
2613 | return err; | |
2614 | } | |
2615 | ||
1da177e4 LT |
2616 | /* |
2617 | * Got race? | |
2618 | * We will need to arrange for the VFS layer to provide an atomic open. | |
2619 | * Until then, this create/open method is prone to inefficiency and race | |
2620 | * conditions due to the lookup, create, and open VFS calls from sys_open() | |
2621 | * placed on the wire. | |
2622 | * | |
2623 | * Given the above sorry state of affairs, I'm simply sending an OPEN. | |
2624 | * The file will be opened again in the subsequent VFS open call | |
2625 | * (nfs4_proc_file_open). | |
2626 | * | |
2627 | * The open for read will just hang around to be used by any process that | |
2628 | * opens the file O_RDONLY. This will all be resolved with the VFS changes. | |
2629 | */ | |
2630 | ||
2631 | static int | |
2632 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
c0204fd2 | 2633 | int flags, struct nfs_open_context *ctx) |
1da177e4 | 2634 | { |
82a2c1b7 | 2635 | struct dentry *de = dentry; |
1da177e4 | 2636 | struct nfs4_state *state; |
c0204fd2 TM |
2637 | struct rpc_cred *cred = NULL; |
2638 | fmode_t fmode = 0; | |
1da177e4 LT |
2639 | int status = 0; |
2640 | ||
c0204fd2 TM |
2641 | if (ctx != NULL) { |
2642 | cred = ctx->cred; | |
3d4ff43d | 2643 | de = ctx->dentry; |
c0204fd2 | 2644 | fmode = ctx->mode; |
1da177e4 | 2645 | } |
a8a5da99 | 2646 | sattr->ia_mode &= ~current_umask(); |
82a2c1b7 | 2647 | state = nfs4_do_open(dir, de, fmode, flags, sattr, cred); |
d4d9cdcb | 2648 | d_drop(dentry); |
1da177e4 LT |
2649 | if (IS_ERR(state)) { |
2650 | status = PTR_ERR(state); | |
c0204fd2 | 2651 | goto out; |
1da177e4 | 2652 | } |
d4d9cdcb | 2653 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2654 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
c0204fd2 TM |
2655 | if (ctx != NULL) |
2656 | ctx->state = state; | |
02a913a7 | 2657 | else |
643168c2 | 2658 | nfs4_close_sync(state, fmode); |
1da177e4 LT |
2659 | out: |
2660 | return status; | |
2661 | } | |
2662 | ||
2663 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2664 | { | |
16e42959 | 2665 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2666 | struct nfs_removeargs args = { |
1da177e4 | 2667 | .fh = NFS_FH(dir), |
4fdc17b2 TM |
2668 | .name.len = name->len, |
2669 | .name.name = name->name, | |
16e42959 TM |
2670 | .bitmask = server->attr_bitmask, |
2671 | }; | |
4fdc17b2 | 2672 | struct nfs_removeres res = { |
16e42959 | 2673 | .server = server, |
1da177e4 | 2674 | }; |
1da177e4 | 2675 | struct rpc_message msg = { |
4fdc17b2 TM |
2676 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
2677 | .rpc_argp = &args, | |
2678 | .rpc_resp = &res, | |
1da177e4 | 2679 | }; |
d346890b TM |
2680 | int status = -ENOMEM; |
2681 | ||
2682 | res.dir_attr = nfs_alloc_fattr(); | |
2683 | if (res.dir_attr == NULL) | |
2684 | goto out; | |
1da177e4 | 2685 | |
7c513058 | 2686 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
16e42959 TM |
2687 | if (status == 0) { |
2688 | update_changeattr(dir, &res.cinfo); | |
d346890b | 2689 | nfs_post_op_update_inode(dir, res.dir_attr); |
16e42959 | 2690 | } |
d346890b TM |
2691 | nfs_free_fattr(res.dir_attr); |
2692 | out: | |
1da177e4 LT |
2693 | return status; |
2694 | } | |
2695 | ||
2696 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2697 | { | |
2698 | struct nfs4_exception exception = { }; | |
2699 | int err; | |
2700 | do { | |
2701 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2702 | _nfs4_proc_remove(dir, name), | |
2703 | &exception); | |
2704 | } while (exception.retry); | |
2705 | return err; | |
2706 | } | |
2707 | ||
e4eff1a6 | 2708 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 2709 | { |
e4eff1a6 TM |
2710 | struct nfs_server *server = NFS_SERVER(dir); |
2711 | struct nfs_removeargs *args = msg->rpc_argp; | |
2712 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 2713 | |
a65318bf | 2714 | args->bitmask = server->cache_consistency_bitmask; |
e4eff1a6 | 2715 | res->server = server; |
dfb4f309 | 2716 | res->seq_res.sr_slot = NULL; |
1da177e4 | 2717 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
1da177e4 LT |
2718 | } |
2719 | ||
e4eff1a6 | 2720 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 2721 | { |
e4eff1a6 TM |
2722 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
2723 | ||
14516c3a TM |
2724 | if (!nfs4_sequence_done(task, &res->seq_res)) |
2725 | return 0; | |
9e33bed5 | 2726 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
2727 | return 0; |
2728 | update_changeattr(dir, &res->cinfo); | |
d346890b | 2729 | nfs_post_op_update_inode(dir, res->dir_attr); |
e4eff1a6 | 2730 | return 1; |
1da177e4 LT |
2731 | } |
2732 | ||
d3d4152a JL |
2733 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
2734 | { | |
2735 | struct nfs_server *server = NFS_SERVER(dir); | |
2736 | struct nfs_renameargs *arg = msg->rpc_argp; | |
2737 | struct nfs_renameres *res = msg->rpc_resp; | |
2738 | ||
2739 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
2740 | arg->bitmask = server->attr_bitmask; | |
2741 | res->server = server; | |
2742 | } | |
2743 | ||
2744 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
2745 | struct inode *new_dir) | |
2746 | { | |
2747 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
2748 | ||
2749 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
2750 | return 0; | |
2751 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
2752 | return 0; | |
2753 | ||
2754 | update_changeattr(old_dir, &res->old_cinfo); | |
2755 | nfs_post_op_update_inode(old_dir, res->old_fattr); | |
2756 | update_changeattr(new_dir, &res->new_cinfo); | |
2757 | nfs_post_op_update_inode(new_dir, res->new_fattr); | |
2758 | return 1; | |
2759 | } | |
2760 | ||
1da177e4 LT |
2761 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
2762 | struct inode *new_dir, struct qstr *new_name) | |
2763 | { | |
6caf2c82 | 2764 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 2765 | struct nfs_renameargs arg = { |
1da177e4 LT |
2766 | .old_dir = NFS_FH(old_dir), |
2767 | .new_dir = NFS_FH(new_dir), | |
2768 | .old_name = old_name, | |
2769 | .new_name = new_name, | |
6caf2c82 TM |
2770 | .bitmask = server->attr_bitmask, |
2771 | }; | |
e8582a8b | 2772 | struct nfs_renameres res = { |
6caf2c82 | 2773 | .server = server, |
1da177e4 | 2774 | }; |
1da177e4 LT |
2775 | struct rpc_message msg = { |
2776 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
2777 | .rpc_argp = &arg, | |
2778 | .rpc_resp = &res, | |
2779 | }; | |
011fff72 | 2780 | int status = -ENOMEM; |
1da177e4 | 2781 | |
011fff72 TM |
2782 | res.old_fattr = nfs_alloc_fattr(); |
2783 | res.new_fattr = nfs_alloc_fattr(); | |
2784 | if (res.old_fattr == NULL || res.new_fattr == NULL) | |
2785 | goto out; | |
1da177e4 | 2786 | |
7c513058 | 2787 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
2788 | if (!status) { |
2789 | update_changeattr(old_dir, &res.old_cinfo); | |
6caf2c82 | 2790 | nfs_post_op_update_inode(old_dir, res.old_fattr); |
1da177e4 | 2791 | update_changeattr(new_dir, &res.new_cinfo); |
6caf2c82 | 2792 | nfs_post_op_update_inode(new_dir, res.new_fattr); |
1da177e4 | 2793 | } |
011fff72 TM |
2794 | out: |
2795 | nfs_free_fattr(res.new_fattr); | |
2796 | nfs_free_fattr(res.old_fattr); | |
1da177e4 LT |
2797 | return status; |
2798 | } | |
2799 | ||
2800 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2801 | struct inode *new_dir, struct qstr *new_name) | |
2802 | { | |
2803 | struct nfs4_exception exception = { }; | |
2804 | int err; | |
2805 | do { | |
2806 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
2807 | _nfs4_proc_rename(old_dir, old_name, | |
2808 | new_dir, new_name), | |
2809 | &exception); | |
2810 | } while (exception.retry); | |
2811 | return err; | |
2812 | } | |
2813 | ||
2814 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2815 | { | |
91ba2eee | 2816 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2817 | struct nfs4_link_arg arg = { |
2818 | .fh = NFS_FH(inode), | |
2819 | .dir_fh = NFS_FH(dir), | |
2820 | .name = name, | |
91ba2eee TM |
2821 | .bitmask = server->attr_bitmask, |
2822 | }; | |
91ba2eee TM |
2823 | struct nfs4_link_res res = { |
2824 | .server = server, | |
1da177e4 | 2825 | }; |
1da177e4 LT |
2826 | struct rpc_message msg = { |
2827 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
2828 | .rpc_argp = &arg, | |
91ba2eee | 2829 | .rpc_resp = &res, |
1da177e4 | 2830 | }; |
136f2627 TM |
2831 | int status = -ENOMEM; |
2832 | ||
2833 | res.fattr = nfs_alloc_fattr(); | |
2834 | res.dir_attr = nfs_alloc_fattr(); | |
2835 | if (res.fattr == NULL || res.dir_attr == NULL) | |
2836 | goto out; | |
1da177e4 | 2837 | |
7c513058 | 2838 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
2839 | if (!status) { |
2840 | update_changeattr(dir, &res.cinfo); | |
2841 | nfs_post_op_update_inode(dir, res.dir_attr); | |
73a3d07c | 2842 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 2843 | } |
136f2627 TM |
2844 | out: |
2845 | nfs_free_fattr(res.dir_attr); | |
2846 | nfs_free_fattr(res.fattr); | |
1da177e4 LT |
2847 | return status; |
2848 | } | |
2849 | ||
2850 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2851 | { | |
2852 | struct nfs4_exception exception = { }; | |
2853 | int err; | |
2854 | do { | |
2855 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2856 | _nfs4_proc_link(inode, dir, name), | |
2857 | &exception); | |
2858 | } while (exception.retry); | |
2859 | return err; | |
2860 | } | |
2861 | ||
57dc9a57 TM |
2862 | struct nfs4_createdata { |
2863 | struct rpc_message msg; | |
2864 | struct nfs4_create_arg arg; | |
2865 | struct nfs4_create_res res; | |
2866 | struct nfs_fh fh; | |
2867 | struct nfs_fattr fattr; | |
2868 | struct nfs_fattr dir_fattr; | |
2869 | }; | |
2870 | ||
2871 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
2872 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
2873 | { | |
2874 | struct nfs4_createdata *data; | |
2875 | ||
2876 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
2877 | if (data != NULL) { | |
2878 | struct nfs_server *server = NFS_SERVER(dir); | |
2879 | ||
2880 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
2881 | data->msg.rpc_argp = &data->arg; | |
2882 | data->msg.rpc_resp = &data->res; | |
2883 | data->arg.dir_fh = NFS_FH(dir); | |
2884 | data->arg.server = server; | |
2885 | data->arg.name = name; | |
2886 | data->arg.attrs = sattr; | |
2887 | data->arg.ftype = ftype; | |
2888 | data->arg.bitmask = server->attr_bitmask; | |
2889 | data->res.server = server; | |
2890 | data->res.fh = &data->fh; | |
2891 | data->res.fattr = &data->fattr; | |
2892 | data->res.dir_fattr = &data->dir_fattr; | |
2893 | nfs_fattr_init(data->res.fattr); | |
2894 | nfs_fattr_init(data->res.dir_fattr); | |
2895 | } | |
2896 | return data; | |
2897 | } | |
2898 | ||
2899 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
2900 | { | |
7c513058 | 2901 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 2902 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
2903 | if (status == 0) { |
2904 | update_changeattr(dir, &data->res.dir_cinfo); | |
2905 | nfs_post_op_update_inode(dir, data->res.dir_fattr); | |
2906 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); | |
2907 | } | |
2908 | return status; | |
2909 | } | |
2910 | ||
2911 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
2912 | { | |
2913 | kfree(data); | |
2914 | } | |
2915 | ||
4f390c15 | 2916 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2917 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 2918 | { |
57dc9a57 TM |
2919 | struct nfs4_createdata *data; |
2920 | int status = -ENAMETOOLONG; | |
1da177e4 | 2921 | |
94a6d753 | 2922 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 2923 | goto out; |
4f390c15 | 2924 | |
57dc9a57 TM |
2925 | status = -ENOMEM; |
2926 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
2927 | if (data == NULL) | |
2928 | goto out; | |
2929 | ||
2930 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
2931 | data->arg.u.symlink.pages = &page; | |
2932 | data->arg.u.symlink.len = len; | |
1da177e4 | 2933 | |
57dc9a57 TM |
2934 | status = nfs4_do_create(dir, dentry, data); |
2935 | ||
2936 | nfs4_free_createdata(data); | |
2937 | out: | |
1da177e4 LT |
2938 | return status; |
2939 | } | |
2940 | ||
4f390c15 | 2941 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2942 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
2943 | { |
2944 | struct nfs4_exception exception = { }; | |
2945 | int err; | |
2946 | do { | |
2947 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
2948 | _nfs4_proc_symlink(dir, dentry, page, |
2949 | len, sattr), | |
1da177e4 LT |
2950 | &exception); |
2951 | } while (exception.retry); | |
2952 | return err; | |
2953 | } | |
2954 | ||
2955 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2956 | struct iattr *sattr) | |
2957 | { | |
57dc9a57 TM |
2958 | struct nfs4_createdata *data; |
2959 | int status = -ENOMEM; | |
1da177e4 | 2960 | |
57dc9a57 TM |
2961 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
2962 | if (data == NULL) | |
2963 | goto out; | |
2964 | ||
2965 | status = nfs4_do_create(dir, dentry, data); | |
2966 | ||
2967 | nfs4_free_createdata(data); | |
2968 | out: | |
1da177e4 LT |
2969 | return status; |
2970 | } | |
2971 | ||
2972 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2973 | struct iattr *sattr) | |
2974 | { | |
2975 | struct nfs4_exception exception = { }; | |
2976 | int err; | |
a8a5da99 AK |
2977 | |
2978 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
2979 | do { |
2980 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2981 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
2982 | &exception); | |
2983 | } while (exception.retry); | |
2984 | return err; | |
2985 | } | |
2986 | ||
2987 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 2988 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
2989 | { |
2990 | struct inode *dir = dentry->d_inode; | |
2991 | struct nfs4_readdir_arg args = { | |
2992 | .fh = NFS_FH(dir), | |
56e4ebf8 | 2993 | .pages = pages, |
1da177e4 LT |
2994 | .pgbase = 0, |
2995 | .count = count, | |
96d25e53 | 2996 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 2997 | .plus = plus, |
1da177e4 LT |
2998 | }; |
2999 | struct nfs4_readdir_res res; | |
3000 | struct rpc_message msg = { | |
3001 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3002 | .rpc_argp = &args, | |
3003 | .rpc_resp = &res, | |
3004 | .rpc_cred = cred, | |
3005 | }; | |
3006 | int status; | |
3007 | ||
3110ff80 | 3008 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
3009 | dentry->d_parent->d_name.name, |
3010 | dentry->d_name.name, | |
3011 | (unsigned long long)cookie); | |
1da177e4 LT |
3012 | nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args); |
3013 | res.pgbase = args.pgbase; | |
7c513058 | 3014 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3015 | if (status >= 0) { |
1da177e4 | 3016 | memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3017 | status += args.pgbase; |
3018 | } | |
c4812998 TM |
3019 | |
3020 | nfs_invalidate_atime(dir); | |
3021 | ||
3110ff80 | 3022 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3023 | return status; |
3024 | } | |
3025 | ||
3026 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3027 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3028 | { |
3029 | struct nfs4_exception exception = { }; | |
3030 | int err; | |
3031 | do { | |
3032 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
3033 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 3034 | pages, count, plus), |
1da177e4 LT |
3035 | &exception); |
3036 | } while (exception.retry); | |
3037 | return err; | |
3038 | } | |
3039 | ||
3040 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3041 | struct iattr *sattr, dev_t rdev) | |
3042 | { | |
57dc9a57 TM |
3043 | struct nfs4_createdata *data; |
3044 | int mode = sattr->ia_mode; | |
3045 | int status = -ENOMEM; | |
1da177e4 LT |
3046 | |
3047 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
3048 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
57dc9a57 TM |
3049 | |
3050 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); | |
3051 | if (data == NULL) | |
3052 | goto out; | |
3053 | ||
1da177e4 | 3054 | if (S_ISFIFO(mode)) |
57dc9a57 | 3055 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3056 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3057 | data->arg.ftype = NF4BLK; |
3058 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3059 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3060 | } |
3061 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3062 | data->arg.ftype = NF4CHR; |
3063 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3064 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 | 3065 | } |
1da177e4 | 3066 | |
57dc9a57 TM |
3067 | status = nfs4_do_create(dir, dentry, data); |
3068 | ||
3069 | nfs4_free_createdata(data); | |
3070 | out: | |
1da177e4 LT |
3071 | return status; |
3072 | } | |
3073 | ||
3074 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3075 | struct iattr *sattr, dev_t rdev) | |
3076 | { | |
3077 | struct nfs4_exception exception = { }; | |
3078 | int err; | |
a8a5da99 AK |
3079 | |
3080 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3081 | do { |
3082 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3083 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
3084 | &exception); | |
3085 | } while (exception.retry); | |
3086 | return err; | |
3087 | } | |
3088 | ||
3089 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3090 | struct nfs_fsstat *fsstat) | |
3091 | { | |
3092 | struct nfs4_statfs_arg args = { | |
3093 | .fh = fhandle, | |
3094 | .bitmask = server->attr_bitmask, | |
3095 | }; | |
24ad148a BH |
3096 | struct nfs4_statfs_res res = { |
3097 | .fsstat = fsstat, | |
3098 | }; | |
1da177e4 LT |
3099 | struct rpc_message msg = { |
3100 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3101 | .rpc_argp = &args, | |
24ad148a | 3102 | .rpc_resp = &res, |
1da177e4 LT |
3103 | }; |
3104 | ||
0e574af1 | 3105 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3106 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3107 | } |
3108 | ||
3109 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3110 | { | |
3111 | struct nfs4_exception exception = { }; | |
3112 | int err; | |
3113 | do { | |
3114 | err = nfs4_handle_exception(server, | |
3115 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3116 | &exception); | |
3117 | } while (exception.retry); | |
3118 | return err; | |
3119 | } | |
3120 | ||
3121 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3122 | struct nfs_fsinfo *fsinfo) | |
3123 | { | |
3124 | struct nfs4_fsinfo_arg args = { | |
3125 | .fh = fhandle, | |
3126 | .bitmask = server->attr_bitmask, | |
3127 | }; | |
3dda5e43 BH |
3128 | struct nfs4_fsinfo_res res = { |
3129 | .fsinfo = fsinfo, | |
3130 | }; | |
1da177e4 LT |
3131 | struct rpc_message msg = { |
3132 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3133 | .rpc_argp = &args, | |
3dda5e43 | 3134 | .rpc_resp = &res, |
1da177e4 LT |
3135 | }; |
3136 | ||
7c513058 | 3137 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3138 | } |
3139 | ||
3140 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3141 | { | |
3142 | struct nfs4_exception exception = { }; | |
3143 | int err; | |
3144 | ||
3145 | do { | |
3146 | err = nfs4_handle_exception(server, | |
3147 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
3148 | &exception); | |
3149 | } while (exception.retry); | |
3150 | return err; | |
3151 | } | |
3152 | ||
3153 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3154 | { | |
0e574af1 | 3155 | nfs_fattr_init(fsinfo->fattr); |
1da177e4 LT |
3156 | return nfs4_do_fsinfo(server, fhandle, fsinfo); |
3157 | } | |
3158 | ||
3159 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3160 | struct nfs_pathconf *pathconf) | |
3161 | { | |
3162 | struct nfs4_pathconf_arg args = { | |
3163 | .fh = fhandle, | |
3164 | .bitmask = server->attr_bitmask, | |
3165 | }; | |
d45b2989 BH |
3166 | struct nfs4_pathconf_res res = { |
3167 | .pathconf = pathconf, | |
3168 | }; | |
1da177e4 LT |
3169 | struct rpc_message msg = { |
3170 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3171 | .rpc_argp = &args, | |
d45b2989 | 3172 | .rpc_resp = &res, |
1da177e4 LT |
3173 | }; |
3174 | ||
3175 | /* None of the pathconf attributes are mandatory to implement */ | |
3176 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3177 | memset(pathconf, 0, sizeof(*pathconf)); | |
3178 | return 0; | |
3179 | } | |
3180 | ||
0e574af1 | 3181 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3182 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3183 | } |
3184 | ||
3185 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3186 | struct nfs_pathconf *pathconf) | |
3187 | { | |
3188 | struct nfs4_exception exception = { }; | |
3189 | int err; | |
3190 | ||
3191 | do { | |
3192 | err = nfs4_handle_exception(server, | |
3193 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3194 | &exception); | |
3195 | } while (exception.retry); | |
3196 | return err; | |
3197 | } | |
3198 | ||
d20581aa BH |
3199 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3200 | { | |
3201 | nfs_invalidate_atime(data->inode); | |
3202 | } | |
3203 | ||
cbdabc7f | 3204 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3205 | { |
ec06c096 | 3206 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 3207 | |
9e33bed5 | 3208 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3209 | rpc_restart_call_prepare(task); |
ec06c096 | 3210 | return -EAGAIN; |
1da177e4 | 3211 | } |
8850df99 | 3212 | |
d20581aa | 3213 | __nfs4_read_done_cb(data); |
1da177e4 | 3214 | if (task->tk_status > 0) |
ec06c096 TM |
3215 | renew_lease(server, data->timestamp); |
3216 | return 0; | |
1da177e4 LT |
3217 | } |
3218 | ||
cbdabc7f AA |
3219 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3220 | { | |
3221 | ||
3222 | dprintk("--> %s\n", __func__); | |
3223 | ||
3224 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3225 | return -EAGAIN; | |
3226 | ||
d20581aa BH |
3227 | return data->read_done_cb ? data->read_done_cb(task, data) : |
3228 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
3229 | } |
3230 | ||
bdc7f021 | 3231 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3232 | { |
1da177e4 | 3233 | data->timestamp = jiffies; |
cbdabc7f | 3234 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3235 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
1da177e4 LT |
3236 | } |
3237 | ||
cbdabc7f AA |
3238 | /* Reset the the nfs_read_data to send the read to the MDS. */ |
3239 | void nfs4_reset_read(struct rpc_task *task, struct nfs_read_data *data) | |
3240 | { | |
3241 | dprintk("%s Reset task for i/o through\n", __func__); | |
3242 | put_lseg(data->lseg); | |
3243 | data->lseg = NULL; | |
3244 | /* offsets will differ in the dense stripe case */ | |
3245 | data->args.offset = data->mds_offset; | |
3246 | data->ds_clp = NULL; | |
3247 | data->args.fh = NFS_FH(data->inode); | |
3248 | data->read_done_cb = nfs4_read_done_cb; | |
3249 | task->tk_ops = data->mds_ops; | |
3250 | rpc_task_reset_client(task, NFS_CLIENT(data->inode)); | |
3251 | } | |
3252 | EXPORT_SYMBOL_GPL(nfs4_reset_read); | |
3253 | ||
b029bc9b | 3254 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3255 | { |
1da177e4 LT |
3256 | struct inode *inode = data->inode; |
3257 | ||
9e33bed5 | 3258 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3259 | rpc_restart_call_prepare(task); |
788e7a89 | 3260 | return -EAGAIN; |
1da177e4 | 3261 | } |
4f9838c7 | 3262 | if (task->tk_status >= 0) { |
1da177e4 | 3263 | renew_lease(NFS_SERVER(inode), data->timestamp); |
70ca8852 | 3264 | nfs_post_op_update_inode_force_wcc(inode, data->res.fattr); |
4f9838c7 | 3265 | } |
788e7a89 | 3266 | return 0; |
1da177e4 LT |
3267 | } |
3268 | ||
b029bc9b FI |
3269 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3270 | { | |
3271 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3272 | return -EAGAIN; | |
d20581aa BH |
3273 | return data->write_done_cb ? data->write_done_cb(task, data) : |
3274 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
3275 | } |
3276 | ||
a69aef14 FI |
3277 | /* Reset the the nfs_write_data to send the write to the MDS. */ |
3278 | void nfs4_reset_write(struct rpc_task *task, struct nfs_write_data *data) | |
3279 | { | |
3280 | dprintk("%s Reset task for i/o through\n", __func__); | |
3281 | put_lseg(data->lseg); | |
3282 | data->lseg = NULL; | |
3283 | data->ds_clp = NULL; | |
3284 | data->write_done_cb = nfs4_write_done_cb; | |
3285 | data->args.fh = NFS_FH(data->inode); | |
3286 | data->args.bitmask = data->res.server->cache_consistency_bitmask; | |
3287 | data->args.offset = data->mds_offset; | |
3288 | data->res.fattr = &data->fattr; | |
3289 | task->tk_ops = data->mds_ops; | |
3290 | rpc_task_reset_client(task, NFS_CLIENT(data->inode)); | |
3291 | } | |
3292 | EXPORT_SYMBOL_GPL(nfs4_reset_write); | |
3293 | ||
bdc7f021 | 3294 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3295 | { |
bdc7f021 TM |
3296 | struct nfs_server *server = NFS_SERVER(data->inode); |
3297 | ||
7ffd1064 FI |
3298 | if (data->lseg) { |
3299 | data->args.bitmask = NULL; | |
3300 | data->res.fattr = NULL; | |
3301 | } else | |
3302 | data->args.bitmask = server->cache_consistency_bitmask; | |
b029bc9b FI |
3303 | if (!data->write_done_cb) |
3304 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3305 | data->res.server = server; |
1da177e4 LT |
3306 | data->timestamp = jiffies; |
3307 | ||
bdc7f021 | 3308 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
1da177e4 LT |
3309 | } |
3310 | ||
5f452431 | 3311 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3312 | { |
1da177e4 | 3313 | struct inode *inode = data->inode; |
14516c3a | 3314 | |
9e33bed5 | 3315 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
d00c5d43 | 3316 | rpc_restart_call_prepare(task); |
788e7a89 | 3317 | return -EAGAIN; |
1da177e4 | 3318 | } |
9e08a3c5 | 3319 | nfs_refresh_inode(inode, data->res.fattr); |
788e7a89 | 3320 | return 0; |
1da177e4 LT |
3321 | } |
3322 | ||
5f452431 FI |
3323 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data) |
3324 | { | |
3325 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3326 | return -EAGAIN; | |
3327 | return data->write_done_cb(task, data); | |
3328 | } | |
3329 | ||
bdc7f021 | 3330 | static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3331 | { |
788e7a89 | 3332 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce FI |
3333 | |
3334 | if (data->lseg) { | |
3335 | data->args.bitmask = NULL; | |
3336 | data->res.fattr = NULL; | |
3337 | } else | |
3338 | data->args.bitmask = server->cache_consistency_bitmask; | |
5f452431 FI |
3339 | if (!data->write_done_cb) |
3340 | data->write_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 3341 | data->res.server = server; |
bdc7f021 | 3342 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
1da177e4 LT |
3343 | } |
3344 | ||
9bc4e3ca CL |
3345 | struct nfs4_renewdata { |
3346 | struct nfs_client *client; | |
3347 | unsigned long timestamp; | |
3348 | }; | |
3349 | ||
1da177e4 LT |
3350 | /* |
3351 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3352 | * standalone procedure for queueing an asynchronous RENEW. | |
3353 | */ | |
9bc4e3ca | 3354 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3355 | { |
9bc4e3ca CL |
3356 | struct nfs4_renewdata *data = calldata; |
3357 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3358 | |
0851de06 AB |
3359 | if (atomic_read(&clp->cl_count) > 1) |
3360 | nfs4_schedule_state_renewal(clp); | |
3361 | nfs_put_client(clp); | |
9bc4e3ca | 3362 | kfree(data); |
dc96aef9 AB |
3363 | } |
3364 | ||
9bc4e3ca | 3365 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3366 | { |
9bc4e3ca CL |
3367 | struct nfs4_renewdata *data = calldata; |
3368 | struct nfs_client *clp = data->client; | |
3369 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3370 | |
3371 | if (task->tk_status < 0) { | |
95baa25c | 3372 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
3373 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
3374 | return; | |
3375 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 3376 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
3377 | return; |
3378 | } | |
3379 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 3380 | } |
452e9352 | 3381 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3382 | } |
3383 | ||
963d8fe5 TM |
3384 | static const struct rpc_call_ops nfs4_renew_ops = { |
3385 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3386 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3387 | }; |
3388 | ||
2f60ea6b | 3389 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
3390 | { |
3391 | struct rpc_message msg = { | |
3392 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3393 | .rpc_argp = clp, | |
b4454fe1 | 3394 | .rpc_cred = cred, |
1da177e4 | 3395 | }; |
9bc4e3ca | 3396 | struct nfs4_renewdata *data; |
1da177e4 | 3397 | |
2f60ea6b TM |
3398 | if (renew_flags == 0) |
3399 | return 0; | |
0851de06 AB |
3400 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3401 | return -EIO; | |
b569ad34 | 3402 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
3403 | if (data == NULL) |
3404 | return -ENOMEM; | |
3405 | data->client = clp; | |
3406 | data->timestamp = jiffies; | |
1da177e4 | 3407 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, |
9bc4e3ca | 3408 | &nfs4_renew_ops, data); |
1da177e4 LT |
3409 | } |
3410 | ||
8534d4ec | 3411 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3412 | { |
3413 | struct rpc_message msg = { | |
3414 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3415 | .rpc_argp = clp, | |
b4454fe1 | 3416 | .rpc_cred = cred, |
1da177e4 LT |
3417 | }; |
3418 | unsigned long now = jiffies; | |
3419 | int status; | |
3420 | ||
3421 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3422 | if (status < 0) | |
3423 | return status; | |
452e9352 | 3424 | do_renew_lease(clp, now); |
1da177e4 LT |
3425 | return 0; |
3426 | } | |
3427 | ||
aa1870af BF |
3428 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3429 | { | |
3430 | return (server->caps & NFS_CAP_ACLS) | |
3431 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3432 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3433 | } | |
3434 | ||
3435 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that | |
3436 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on | |
3437 | * the stack. | |
3438 | */ | |
3439 | #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT) | |
3440 | ||
e9e3d724 NH |
3441 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
3442 | struct page **pages, unsigned int *pgbase) | |
3443 | { | |
3444 | struct page *newpage, **spages; | |
3445 | int rc = 0; | |
3446 | size_t len; | |
3447 | spages = pages; | |
3448 | ||
3449 | do { | |
43b7c3f0 | 3450 | len = min_t(size_t, PAGE_CACHE_SIZE, buflen); |
e9e3d724 NH |
3451 | newpage = alloc_page(GFP_KERNEL); |
3452 | ||
3453 | if (newpage == NULL) | |
3454 | goto unwind; | |
3455 | memcpy(page_address(newpage), buf, len); | |
3456 | buf += len; | |
3457 | buflen -= len; | |
3458 | *pages++ = newpage; | |
3459 | rc++; | |
3460 | } while (buflen != 0); | |
3461 | ||
3462 | return rc; | |
3463 | ||
3464 | unwind: | |
3465 | for(; rc > 0; rc--) | |
3466 | __free_page(spages[rc-1]); | |
3467 | return -ENOMEM; | |
3468 | } | |
3469 | ||
e50a1c2e BF |
3470 | struct nfs4_cached_acl { |
3471 | int cached; | |
3472 | size_t len; | |
3e9d4154 | 3473 | char data[0]; |
e50a1c2e BF |
3474 | }; |
3475 | ||
3476 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3477 | { | |
3478 | struct nfs_inode *nfsi = NFS_I(inode); | |
3479 | ||
3480 | spin_lock(&inode->i_lock); | |
3481 | kfree(nfsi->nfs4_acl); | |
3482 | nfsi->nfs4_acl = acl; | |
3483 | spin_unlock(&inode->i_lock); | |
3484 | } | |
3485 | ||
3486 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3487 | { | |
3488 | nfs4_set_cached_acl(inode, NULL); | |
3489 | } | |
3490 | ||
3491 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3492 | { | |
3493 | struct nfs_inode *nfsi = NFS_I(inode); | |
3494 | struct nfs4_cached_acl *acl; | |
3495 | int ret = -ENOENT; | |
3496 | ||
3497 | spin_lock(&inode->i_lock); | |
3498 | acl = nfsi->nfs4_acl; | |
3499 | if (acl == NULL) | |
3500 | goto out; | |
3501 | if (buf == NULL) /* user is just asking for length */ | |
3502 | goto out_len; | |
3503 | if (acl->cached == 0) | |
3504 | goto out; | |
3505 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3506 | if (acl->len > buflen) | |
3507 | goto out; | |
3508 | memcpy(buf, acl->data, acl->len); | |
3509 | out_len: | |
3510 | ret = acl->len; | |
3511 | out: | |
3512 | spin_unlock(&inode->i_lock); | |
3513 | return ret; | |
3514 | } | |
3515 | ||
3516 | static void nfs4_write_cached_acl(struct inode *inode, const char *buf, size_t acl_len) | |
3517 | { | |
3518 | struct nfs4_cached_acl *acl; | |
3519 | ||
3520 | if (buf && acl_len <= PAGE_SIZE) { | |
3521 | acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL); | |
3522 | if (acl == NULL) | |
3523 | goto out; | |
3524 | acl->cached = 1; | |
3525 | memcpy(acl->data, buf, acl_len); | |
3526 | } else { | |
3527 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3528 | if (acl == NULL) | |
3529 | goto out; | |
3530 | acl->cached = 0; | |
3531 | } | |
3532 | acl->len = acl_len; | |
3533 | out: | |
3534 | nfs4_set_cached_acl(inode, acl); | |
3535 | } | |
3536 | ||
bf118a34 AA |
3537 | /* |
3538 | * The getxattr API returns the required buffer length when called with a | |
3539 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
3540 | * the required buf. On a NULL buf, we send a page of data to the server | |
3541 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
3542 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
3543 | * the cache. If not so, we throw away the page, and cache the required | |
3544 | * length. The next getxattr call will then produce another round trip to | |
3545 | * the server, this time with the input buf of the required size. | |
3546 | */ | |
16b4289c | 3547 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3548 | { |
bf118a34 | 3549 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
3550 | struct nfs_getaclargs args = { |
3551 | .fh = NFS_FH(inode), | |
3552 | .acl_pages = pages, | |
3553 | .acl_len = buflen, | |
3554 | }; | |
663c79b3 BH |
3555 | struct nfs_getaclres res = { |
3556 | .acl_len = buflen, | |
3557 | }; | |
e50a1c2e | 3558 | void *resp_buf; |
aa1870af BF |
3559 | struct rpc_message msg = { |
3560 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3561 | .rpc_argp = &args, | |
663c79b3 | 3562 | .rpc_resp = &res, |
aa1870af | 3563 | }; |
bf118a34 | 3564 | int ret = -ENOMEM, npages, i, acl_len = 0; |
aa1870af | 3565 | |
bf118a34 AA |
3566 | npages = (buflen + PAGE_SIZE - 1) >> PAGE_SHIFT; |
3567 | /* As long as we're doing a round trip to the server anyway, | |
3568 | * let's be prepared for a page of acl data. */ | |
3569 | if (npages == 0) | |
3570 | npages = 1; | |
3571 | ||
3572 | for (i = 0; i < npages; i++) { | |
3573 | pages[i] = alloc_page(GFP_KERNEL); | |
3574 | if (!pages[i]) | |
3575 | goto out_free; | |
e50a1c2e | 3576 | } |
bf118a34 AA |
3577 | if (npages > 1) { |
3578 | /* for decoding across pages */ | |
3579 | args.acl_scratch = alloc_page(GFP_KERNEL); | |
3580 | if (!args.acl_scratch) | |
3581 | goto out_free; | |
e50a1c2e | 3582 | } |
bf118a34 AA |
3583 | args.acl_len = npages * PAGE_SIZE; |
3584 | args.acl_pgbase = 0; | |
3585 | /* Let decode_getfacl know not to fail if the ACL data is larger than | |
3586 | * the page we send as a guess */ | |
3587 | if (buf == NULL) | |
3588 | res.acl_flags |= NFS4_ACL_LEN_REQUEST; | |
3589 | resp_buf = page_address(pages[0]); | |
3590 | ||
de040bec | 3591 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
3592 | __func__, buf, buflen, npages, args.acl_len); |
3593 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
3594 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
3595 | if (ret) |
3596 | goto out_free; | |
bf118a34 AA |
3597 | |
3598 | acl_len = res.acl_len - res.acl_data_offset; | |
3599 | if (acl_len > args.acl_len) | |
3600 | nfs4_write_cached_acl(inode, NULL, acl_len); | |
e50a1c2e | 3601 | else |
bf118a34 AA |
3602 | nfs4_write_cached_acl(inode, resp_buf + res.acl_data_offset, |
3603 | acl_len); | |
e50a1c2e BF |
3604 | if (buf) { |
3605 | ret = -ERANGE; | |
bf118a34 | 3606 | if (acl_len > buflen) |
e50a1c2e | 3607 | goto out_free; |
bf118a34 AA |
3608 | _copy_from_pages(buf, pages, res.acl_data_offset, |
3609 | res.acl_len); | |
e50a1c2e | 3610 | } |
bf118a34 | 3611 | ret = acl_len; |
e50a1c2e | 3612 | out_free: |
bf118a34 AA |
3613 | for (i = 0; i < npages; i++) |
3614 | if (pages[i]) | |
3615 | __free_page(pages[i]); | |
3616 | if (args.acl_scratch) | |
3617 | __free_page(args.acl_scratch); | |
aa1870af BF |
3618 | return ret; |
3619 | } | |
3620 | ||
16b4289c TM |
3621 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
3622 | { | |
3623 | struct nfs4_exception exception = { }; | |
3624 | ssize_t ret; | |
3625 | do { | |
3626 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
3627 | if (ret >= 0) | |
3628 | break; | |
3629 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
3630 | } while (exception.retry); | |
3631 | return ret; | |
3632 | } | |
3633 | ||
e50a1c2e BF |
3634 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
3635 | { | |
3636 | struct nfs_server *server = NFS_SERVER(inode); | |
3637 | int ret; | |
3638 | ||
3639 | if (!nfs4_server_supports_acls(server)) | |
3640 | return -EOPNOTSUPP; | |
3641 | ret = nfs_revalidate_inode(server, inode); | |
3642 | if (ret < 0) | |
3643 | return ret; | |
08a22b39 AK |
3644 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
3645 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
3646 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
3647 | if (ret != -ENOENT) | |
bf118a34 AA |
3648 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
3649 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
3650 | return ret; |
3651 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
3652 | } | |
3653 | ||
16b4289c | 3654 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
3655 | { |
3656 | struct nfs_server *server = NFS_SERVER(inode); | |
3657 | struct page *pages[NFS4ACL_MAXPAGES]; | |
3658 | struct nfs_setaclargs arg = { | |
3659 | .fh = NFS_FH(inode), | |
3660 | .acl_pages = pages, | |
3661 | .acl_len = buflen, | |
3662 | }; | |
73c403a9 | 3663 | struct nfs_setaclres res; |
4b580ee3 BF |
3664 | struct rpc_message msg = { |
3665 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
3666 | .rpc_argp = &arg, | |
73c403a9 | 3667 | .rpc_resp = &res, |
4b580ee3 | 3668 | }; |
e9e3d724 | 3669 | int ret, i; |
4b580ee3 BF |
3670 | |
3671 | if (!nfs4_server_supports_acls(server)) | |
3672 | return -EOPNOTSUPP; | |
e9e3d724 NH |
3673 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
3674 | if (i < 0) | |
3675 | return i; | |
642ac549 | 3676 | nfs_inode_return_delegation(inode); |
7c513058 | 3677 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
3678 | |
3679 | /* | |
3680 | * Free each page after tx, so the only ref left is | |
3681 | * held by the network stack | |
3682 | */ | |
3683 | for (; i > 0; i--) | |
3684 | put_page(pages[i-1]); | |
3685 | ||
08a22b39 AK |
3686 | /* |
3687 | * Acl update can result in inode attribute update. | |
3688 | * so mark the attribute cache invalid. | |
3689 | */ | |
3690 | spin_lock(&inode->i_lock); | |
3691 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
3692 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
3693 | nfs_access_zap_cache(inode); |
3694 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
3695 | return ret; |
3696 | } | |
3697 | ||
16b4289c TM |
3698 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
3699 | { | |
3700 | struct nfs4_exception exception = { }; | |
3701 | int err; | |
3702 | do { | |
3703 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3704 | __nfs4_proc_set_acl(inode, buf, buflen), | |
3705 | &exception); | |
3706 | } while (exception.retry); | |
3707 | return err; | |
3708 | } | |
3709 | ||
1da177e4 | 3710 | static int |
aa5190d0 | 3711 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 3712 | { |
aa5190d0 TM |
3713 | struct nfs_client *clp = server->nfs_client; |
3714 | ||
3715 | if (task->tk_status >= 0) | |
1da177e4 LT |
3716 | return 0; |
3717 | switch(task->tk_status) { | |
9e33bed5 TM |
3718 | case -NFS4ERR_ADMIN_REVOKED: |
3719 | case -NFS4ERR_BAD_STATEID: | |
3720 | case -NFS4ERR_OPENMODE: | |
3721 | if (state == NULL) | |
3722 | break; | |
0400a6b0 TM |
3723 | nfs4_schedule_stateid_recovery(server, state); |
3724 | goto wait_on_recovery; | |
0ced63d1 TM |
3725 | case -NFS4ERR_EXPIRED: |
3726 | if (state != NULL) | |
3727 | nfs4_schedule_stateid_recovery(server, state); | |
1da177e4 | 3728 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 3729 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
3730 | nfs4_schedule_lease_recovery(clp); |
3731 | goto wait_on_recovery; | |
4745e315 AA |
3732 | #if defined(CONFIG_NFS_V4_1) |
3733 | case -NFS4ERR_BADSESSION: | |
3734 | case -NFS4ERR_BADSLOT: | |
3735 | case -NFS4ERR_BAD_HIGH_SLOT: | |
3736 | case -NFS4ERR_DEADSESSION: | |
3737 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
3738 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
3739 | case -NFS4ERR_SEQ_MISORDERED: | |
3740 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
3741 | task->tk_status); | |
0400a6b0 | 3742 | nfs4_schedule_session_recovery(clp->cl_session); |
4745e315 AA |
3743 | task->tk_status = 0; |
3744 | return -EAGAIN; | |
3745 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 3746 | case -NFS4ERR_DELAY: |
aa5190d0 | 3747 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 3748 | case -NFS4ERR_GRACE: |
2c643488 | 3749 | case -EKEYEXPIRED: |
1da177e4 LT |
3750 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
3751 | task->tk_status = 0; | |
3752 | return -EAGAIN; | |
a8a4ae3a | 3753 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
3754 | case -NFS4ERR_OLD_STATEID: |
3755 | task->tk_status = 0; | |
3756 | return -EAGAIN; | |
3757 | } | |
3758 | task->tk_status = nfs4_map_errors(task->tk_status); | |
3759 | return 0; | |
0400a6b0 | 3760 | wait_on_recovery: |
a2c0b9e2 | 3761 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
3762 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
3763 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
3764 | task->tk_status = 0; | |
3765 | return -EAGAIN; | |
1da177e4 LT |
3766 | } |
3767 | ||
bb8b27e5 TM |
3768 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
3769 | unsigned short port, struct rpc_cred *cred, | |
3770 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
3771 | { |
3772 | nfs4_verifier sc_verifier; | |
3773 | struct nfs4_setclientid setclientid = { | |
3774 | .sc_verifier = &sc_verifier, | |
3775 | .sc_prog = program, | |
f4eecd5d | 3776 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
3777 | }; |
3778 | struct rpc_message msg = { | |
3779 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
3780 | .rpc_argp = &setclientid, | |
bb8b27e5 | 3781 | .rpc_resp = res, |
286d7d6a | 3782 | .rpc_cred = cred, |
1da177e4 | 3783 | }; |
bc4785cd | 3784 | __be32 *p; |
1da177e4 LT |
3785 | int loop = 0; |
3786 | int status; | |
3787 | ||
bc4785cd | 3788 | p = (__be32*)sc_verifier.data; |
1da177e4 LT |
3789 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); |
3790 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
3791 | ||
3792 | for(;;) { | |
3793 | setclientid.sc_name_len = scnprintf(setclientid.sc_name, | |
69dd716c | 3794 | sizeof(setclientid.sc_name), "%s/%s %s %s %u", |
d4d3c507 CL |
3795 | clp->cl_ipaddr, |
3796 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3797 | RPC_DISPLAY_ADDR), | |
69dd716c TM |
3798 | rpc_peeraddr2str(clp->cl_rpcclient, |
3799 | RPC_DISPLAY_PROTO), | |
78ea323b | 3800 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
1da177e4 LT |
3801 | clp->cl_id_uniquifier); |
3802 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, | |
d4d3c507 CL |
3803 | sizeof(setclientid.sc_netid), |
3804 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3805 | RPC_DISPLAY_NETID)); | |
1da177e4 | 3806 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 3807 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
3808 | clp->cl_ipaddr, port >> 8, port & 255); |
3809 | ||
1bd714f2 | 3810 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
3811 | if (status != -NFS4ERR_CLID_INUSE) |
3812 | break; | |
fd954ae1 TM |
3813 | if (loop != 0) { |
3814 | ++clp->cl_id_uniquifier; | |
1da177e4 | 3815 | break; |
fd954ae1 TM |
3816 | } |
3817 | ++loop; | |
3818 | ssleep(clp->cl_lease_time / HZ + 1); | |
1da177e4 LT |
3819 | } |
3820 | return status; | |
3821 | } | |
3822 | ||
fd954ae1 | 3823 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
3824 | struct nfs4_setclientid_res *arg, |
3825 | struct rpc_cred *cred) | |
1da177e4 LT |
3826 | { |
3827 | struct nfs_fsinfo fsinfo; | |
3828 | struct rpc_message msg = { | |
3829 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 3830 | .rpc_argp = arg, |
1da177e4 | 3831 | .rpc_resp = &fsinfo, |
286d7d6a | 3832 | .rpc_cred = cred, |
1da177e4 LT |
3833 | }; |
3834 | unsigned long now; | |
3835 | int status; | |
3836 | ||
3837 | now = jiffies; | |
1bd714f2 | 3838 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
3839 | if (status == 0) { |
3840 | spin_lock(&clp->cl_lock); | |
3841 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
3842 | clp->cl_last_renewal = now; | |
3843 | spin_unlock(&clp->cl_lock); | |
3844 | } | |
3845 | return status; | |
3846 | } | |
3847 | ||
fe650407 TM |
3848 | struct nfs4_delegreturndata { |
3849 | struct nfs4_delegreturnargs args; | |
fa178f29 | 3850 | struct nfs4_delegreturnres res; |
fe650407 TM |
3851 | struct nfs_fh fh; |
3852 | nfs4_stateid stateid; | |
26e976a8 | 3853 | unsigned long timestamp; |
fa178f29 | 3854 | struct nfs_fattr fattr; |
fe650407 TM |
3855 | int rpc_status; |
3856 | }; | |
3857 | ||
fe650407 TM |
3858 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
3859 | { | |
3860 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 3861 | |
14516c3a TM |
3862 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
3863 | return; | |
938e1010 | 3864 | |
79708861 RL |
3865 | switch (task->tk_status) { |
3866 | case -NFS4ERR_STALE_STATEID: | |
3867 | case -NFS4ERR_EXPIRED: | |
3868 | case 0: | |
fa178f29 | 3869 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
3870 | break; |
3871 | default: | |
3872 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
3873 | -EAGAIN) { | |
d00c5d43 | 3874 | rpc_restart_call_prepare(task); |
79708861 RL |
3875 | return; |
3876 | } | |
3877 | } | |
3878 | data->rpc_status = task->tk_status; | |
fe650407 TM |
3879 | } |
3880 | ||
3881 | static void nfs4_delegreturn_release(void *calldata) | |
3882 | { | |
fe650407 TM |
3883 | kfree(calldata); |
3884 | } | |
3885 | ||
938e1010 AA |
3886 | #if defined(CONFIG_NFS_V4_1) |
3887 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
3888 | { | |
3889 | struct nfs4_delegreturndata *d_data; | |
3890 | ||
3891 | d_data = (struct nfs4_delegreturndata *)data; | |
3892 | ||
035168ab | 3893 | if (nfs4_setup_sequence(d_data->res.server, |
938e1010 AA |
3894 | &d_data->args.seq_args, |
3895 | &d_data->res.seq_res, 1, task)) | |
3896 | return; | |
3897 | rpc_call_start(task); | |
3898 | } | |
3899 | #endif /* CONFIG_NFS_V4_1 */ | |
3900 | ||
c8d149f3 | 3901 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
3902 | #if defined(CONFIG_NFS_V4_1) |
3903 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
3904 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
3905 | .rpc_call_done = nfs4_delegreturn_done, |
3906 | .rpc_release = nfs4_delegreturn_release, | |
3907 | }; | |
3908 | ||
e6f81075 | 3909 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
3910 | { |
3911 | struct nfs4_delegreturndata *data; | |
fa178f29 | 3912 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 3913 | struct rpc_task *task; |
5138fde0 TM |
3914 | struct rpc_message msg = { |
3915 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
3916 | .rpc_cred = cred, | |
3917 | }; | |
c970aa85 TM |
3918 | struct rpc_task_setup task_setup_data = { |
3919 | .rpc_client = server->client, | |
5138fde0 | 3920 | .rpc_message = &msg, |
c970aa85 TM |
3921 | .callback_ops = &nfs4_delegreturn_ops, |
3922 | .flags = RPC_TASK_ASYNC, | |
3923 | }; | |
e6f81075 | 3924 | int status = 0; |
fe650407 | 3925 | |
8535b2be | 3926 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
3927 | if (data == NULL) |
3928 | return -ENOMEM; | |
3929 | data->args.fhandle = &data->fh; | |
3930 | data->args.stateid = &data->stateid; | |
fa178f29 | 3931 | data->args.bitmask = server->attr_bitmask; |
fe650407 TM |
3932 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
3933 | memcpy(&data->stateid, stateid, sizeof(data->stateid)); | |
fa178f29 TM |
3934 | data->res.fattr = &data->fattr; |
3935 | data->res.server = server; | |
5138fde0 | 3936 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 3937 | data->timestamp = jiffies; |
fe650407 TM |
3938 | data->rpc_status = 0; |
3939 | ||
c970aa85 | 3940 | task_setup_data.callback_data = data; |
1174dd1f TM |
3941 | msg.rpc_argp = &data->args; |
3942 | msg.rpc_resp = &data->res; | |
c970aa85 | 3943 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 3944 | if (IS_ERR(task)) |
fe650407 | 3945 | return PTR_ERR(task); |
e6f81075 TM |
3946 | if (!issync) |
3947 | goto out; | |
fe650407 | 3948 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
3949 | if (status != 0) |
3950 | goto out; | |
3951 | status = data->rpc_status; | |
3952 | if (status != 0) | |
3953 | goto out; | |
3954 | nfs_refresh_inode(inode, &data->fattr); | |
3955 | out: | |
e6b3c4db | 3956 | rpc_put_task(task); |
fe650407 | 3957 | return status; |
1da177e4 LT |
3958 | } |
3959 | ||
e6f81075 | 3960 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
3961 | { |
3962 | struct nfs_server *server = NFS_SERVER(inode); | |
3963 | struct nfs4_exception exception = { }; | |
3964 | int err; | |
3965 | do { | |
e6f81075 | 3966 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
3967 | switch (err) { |
3968 | case -NFS4ERR_STALE_STATEID: | |
3969 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
3970 | case 0: |
3971 | return 0; | |
3972 | } | |
3973 | err = nfs4_handle_exception(server, err, &exception); | |
3974 | } while (exception.retry); | |
3975 | return err; | |
3976 | } | |
3977 | ||
3978 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
3979 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
3980 | ||
3981 | /* | |
3982 | * sleep, with exponential backoff, and retry the LOCK operation. | |
3983 | */ | |
3984 | static unsigned long | |
3985 | nfs4_set_lock_task_retry(unsigned long timeout) | |
3986 | { | |
d310310c | 3987 | freezable_schedule_timeout_killable(timeout); |
1da177e4 LT |
3988 | timeout <<= 1; |
3989 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
3990 | return NFS4_LOCK_MAXTIMEOUT; | |
3991 | return timeout; | |
3992 | } | |
3993 | ||
1da177e4 LT |
3994 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
3995 | { | |
3996 | struct inode *inode = state->inode; | |
3997 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 3998 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 3999 | struct nfs_lockt_args arg = { |
1da177e4 | 4000 | .fh = NFS_FH(inode), |
911d1aaf | 4001 | .fl = request, |
1da177e4 | 4002 | }; |
911d1aaf TM |
4003 | struct nfs_lockt_res res = { |
4004 | .denied = request, | |
1da177e4 LT |
4005 | }; |
4006 | struct rpc_message msg = { | |
4007 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
4008 | .rpc_argp = &arg, | |
4009 | .rpc_resp = &res, | |
4010 | .rpc_cred = state->owner->so_cred, | |
4011 | }; | |
1da177e4 LT |
4012 | struct nfs4_lock_state *lsp; |
4013 | int status; | |
4014 | ||
911d1aaf | 4015 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
4016 | status = nfs4_set_lock_state(state, request); |
4017 | if (status != 0) | |
4018 | goto out; | |
4019 | lsp = request->fl_u.nfs4_fl.owner; | |
d2d7ce28 | 4020 | arg.lock_owner.id = lsp->ls_id; |
d035c36c | 4021 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 4022 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
4023 | switch (status) { |
4024 | case 0: | |
4025 | request->fl_type = F_UNLCK; | |
4026 | break; | |
4027 | case -NFS4ERR_DENIED: | |
4028 | status = 0; | |
1da177e4 | 4029 | } |
70cc6487 | 4030 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 4031 | out: |
1da177e4 LT |
4032 | return status; |
4033 | } | |
4034 | ||
4035 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4036 | { | |
4037 | struct nfs4_exception exception = { }; | |
4038 | int err; | |
4039 | ||
4040 | do { | |
4041 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
4042 | _nfs4_proc_getlk(state, cmd, request), | |
4043 | &exception); | |
4044 | } while (exception.retry); | |
4045 | return err; | |
4046 | } | |
4047 | ||
4048 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
4049 | { | |
4050 | int res = 0; | |
4051 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
4052 | case FL_POSIX: | |
4053 | res = posix_lock_file_wait(file, fl); | |
4054 | break; | |
4055 | case FL_FLOCK: | |
4056 | res = flock_lock_file_wait(file, fl); | |
4057 | break; | |
4058 | default: | |
4059 | BUG(); | |
4060 | } | |
1da177e4 LT |
4061 | return res; |
4062 | } | |
4063 | ||
faf5f49c | 4064 | struct nfs4_unlockdata { |
911d1aaf TM |
4065 | struct nfs_locku_args arg; |
4066 | struct nfs_locku_res res; | |
faf5f49c TM |
4067 | struct nfs4_lock_state *lsp; |
4068 | struct nfs_open_context *ctx; | |
911d1aaf TM |
4069 | struct file_lock fl; |
4070 | const struct nfs_server *server; | |
26e976a8 | 4071 | unsigned long timestamp; |
faf5f49c TM |
4072 | }; |
4073 | ||
911d1aaf TM |
4074 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
4075 | struct nfs_open_context *ctx, | |
4076 | struct nfs4_lock_state *lsp, | |
4077 | struct nfs_seqid *seqid) | |
4078 | { | |
4079 | struct nfs4_unlockdata *p; | |
4080 | struct inode *inode = lsp->ls_state->inode; | |
4081 | ||
8535b2be | 4082 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
4083 | if (p == NULL) |
4084 | return NULL; | |
4085 | p->arg.fh = NFS_FH(inode); | |
4086 | p->arg.fl = &p->fl; | |
4087 | p->arg.seqid = seqid; | |
c1d51931 | 4088 | p->res.seqid = seqid; |
911d1aaf TM |
4089 | p->arg.stateid = &lsp->ls_stateid; |
4090 | p->lsp = lsp; | |
4091 | atomic_inc(&lsp->ls_count); | |
4092 | /* Ensure we don't close file until we're done freeing locks! */ | |
4093 | p->ctx = get_nfs_open_context(ctx); | |
4094 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4095 | p->server = NFS_SERVER(inode); | |
4096 | return p; | |
4097 | } | |
4098 | ||
06f814a3 | 4099 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 4100 | { |
963d8fe5 | 4101 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 4102 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
4103 | nfs4_put_lock_state(calldata->lsp); |
4104 | put_nfs_open_context(calldata->ctx); | |
4105 | kfree(calldata); | |
faf5f49c TM |
4106 | } |
4107 | ||
963d8fe5 | 4108 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 4109 | { |
963d8fe5 | 4110 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4111 | |
14516c3a TM |
4112 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
4113 | return; | |
faf5f49c TM |
4114 | switch (task->tk_status) { |
4115 | case 0: | |
4116 | memcpy(calldata->lsp->ls_stateid.data, | |
911d1aaf | 4117 | calldata->res.stateid.data, |
faf5f49c | 4118 | sizeof(calldata->lsp->ls_stateid.data)); |
26e976a8 | 4119 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 4120 | break; |
9e33bed5 TM |
4121 | case -NFS4ERR_BAD_STATEID: |
4122 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
4123 | case -NFS4ERR_STALE_STATEID: |
4124 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
4125 | break; |
4126 | default: | |
9e33bed5 | 4127 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
d00c5d43 | 4128 | rpc_restart_call_prepare(task); |
faf5f49c | 4129 | } |
faf5f49c TM |
4130 | } |
4131 | ||
4ce70ada | 4132 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 4133 | { |
4ce70ada | 4134 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4135 | |
911d1aaf | 4136 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c TM |
4137 | return; |
4138 | if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) { | |
963d8fe5 TM |
4139 | /* Note: exit _without_ running nfs4_locku_done */ |
4140 | task->tk_action = NULL; | |
faf5f49c TM |
4141 | return; |
4142 | } | |
26e976a8 | 4143 | calldata->timestamp = jiffies; |
035168ab | 4144 | if (nfs4_setup_sequence(calldata->server, |
a893693c AA |
4145 | &calldata->arg.seq_args, |
4146 | &calldata->res.seq_res, 1, task)) | |
4147 | return; | |
5138fde0 | 4148 | rpc_call_start(task); |
faf5f49c TM |
4149 | } |
4150 | ||
963d8fe5 | 4151 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 4152 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 4153 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 4154 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
4155 | }; |
4156 | ||
a5d16a4d TM |
4157 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
4158 | struct nfs_open_context *ctx, | |
4159 | struct nfs4_lock_state *lsp, | |
4160 | struct nfs_seqid *seqid) | |
4161 | { | |
4162 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
4163 | struct rpc_message msg = { |
4164 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
4165 | .rpc_cred = ctx->cred, | |
4166 | }; | |
c970aa85 TM |
4167 | struct rpc_task_setup task_setup_data = { |
4168 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 4169 | .rpc_message = &msg, |
c970aa85 | 4170 | .callback_ops = &nfs4_locku_ops, |
101070ca | 4171 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4172 | .flags = RPC_TASK_ASYNC, |
4173 | }; | |
a5d16a4d | 4174 | |
137d6aca FF |
4175 | /* Ensure this is an unlock - when canceling a lock, the |
4176 | * canceled lock is passed in, and it won't be an unlock. | |
4177 | */ | |
4178 | fl->fl_type = F_UNLCK; | |
4179 | ||
a5d16a4d TM |
4180 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
4181 | if (data == NULL) { | |
4182 | nfs_free_seqid(seqid); | |
4183 | return ERR_PTR(-ENOMEM); | |
4184 | } | |
4185 | ||
1174dd1f TM |
4186 | msg.rpc_argp = &data->arg; |
4187 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4188 | task_setup_data.callback_data = data; |
4189 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
4190 | } |
4191 | ||
faf5f49c TM |
4192 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
4193 | { | |
19e03c57 | 4194 | struct nfs_inode *nfsi = NFS_I(state->inode); |
911d1aaf | 4195 | struct nfs_seqid *seqid; |
1da177e4 | 4196 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
4197 | struct rpc_task *task; |
4198 | int status = 0; | |
536ff0f8 | 4199 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 4200 | |
8d0a8a9d | 4201 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
4202 | /* Unlock _before_ we do the RPC call */ |
4203 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
4204 | down_read(&nfsi->rwsem); |
4205 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
4206 | up_read(&nfsi->rwsem); | |
9b073574 | 4207 | goto out; |
19e03c57 TM |
4208 | } |
4209 | up_read(&nfsi->rwsem); | |
8d0a8a9d | 4210 | if (status != 0) |
9b073574 TM |
4211 | goto out; |
4212 | /* Is this a delegated lock? */ | |
4213 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
4214 | goto out; | |
8d0a8a9d | 4215 | lsp = request->fl_u.nfs4_fl.owner; |
8535b2be | 4216 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 4217 | status = -ENOMEM; |
911d1aaf | 4218 | if (seqid == NULL) |
9b073574 | 4219 | goto out; |
cd3758e3 | 4220 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
4221 | status = PTR_ERR(task); |
4222 | if (IS_ERR(task)) | |
9b073574 | 4223 | goto out; |
a5d16a4d | 4224 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 4225 | rpc_put_task(task); |
9b073574 | 4226 | out: |
536ff0f8 | 4227 | request->fl_flags = fl_flags; |
1da177e4 LT |
4228 | return status; |
4229 | } | |
4230 | ||
a5d16a4d TM |
4231 | struct nfs4_lockdata { |
4232 | struct nfs_lock_args arg; | |
4233 | struct nfs_lock_res res; | |
4234 | struct nfs4_lock_state *lsp; | |
4235 | struct nfs_open_context *ctx; | |
4236 | struct file_lock fl; | |
26e976a8 | 4237 | unsigned long timestamp; |
a5d16a4d TM |
4238 | int rpc_status; |
4239 | int cancelled; | |
66179efe | 4240 | struct nfs_server *server; |
a5d16a4d TM |
4241 | }; |
4242 | ||
4243 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
4244 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
4245 | gfp_t gfp_mask) | |
1da177e4 | 4246 | { |
a5d16a4d TM |
4247 | struct nfs4_lockdata *p; |
4248 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 4249 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 4250 | |
8535b2be | 4251 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
4252 | if (p == NULL) |
4253 | return NULL; | |
4254 | ||
4255 | p->arg.fh = NFS_FH(inode); | |
4256 | p->arg.fl = &p->fl; | |
8535b2be | 4257 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4258 | if (p->arg.open_seqid == NULL) |
4259 | goto out_free; | |
8535b2be | 4260 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4261 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4262 | goto out_free_seqid; |
a5d16a4d | 4263 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4264 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
d2d7ce28 | 4265 | p->arg.lock_owner.id = lsp->ls_id; |
d035c36c | 4266 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 4267 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4268 | p->lsp = lsp; |
66179efe | 4269 | p->server = server; |
a5d16a4d TM |
4270 | atomic_inc(&lsp->ls_count); |
4271 | p->ctx = get_nfs_open_context(ctx); | |
4272 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4273 | return p; | |
2f74c0a0 TM |
4274 | out_free_seqid: |
4275 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4276 | out_free: |
4277 | kfree(p); | |
4278 | return NULL; | |
4279 | } | |
4280 | ||
4281 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4282 | { | |
4283 | struct nfs4_lockdata *data = calldata; | |
4284 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4285 | |
3110ff80 | 4286 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
4287 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
4288 | return; | |
a5d16a4d TM |
4289 | /* Do we need to do an open_to_lock_owner? */ |
4290 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 TM |
4291 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
4292 | return; | |
a5d16a4d TM |
4293 | data->arg.open_stateid = &state->stateid; |
4294 | data->arg.new_lock_owner = 1; | |
c1d51931 | 4295 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4296 | } else |
4297 | data->arg.new_lock_owner = 0; | |
26e976a8 | 4298 | data->timestamp = jiffies; |
035168ab TM |
4299 | if (nfs4_setup_sequence(data->server, |
4300 | &data->arg.seq_args, | |
66179efe AA |
4301 | &data->res.seq_res, 1, task)) |
4302 | return; | |
5138fde0 | 4303 | rpc_call_start(task); |
3110ff80 | 4304 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
a5d16a4d TM |
4305 | } |
4306 | ||
b257957e AB |
4307 | static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata) |
4308 | { | |
4309 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
4310 | nfs4_lock_prepare(task, calldata); | |
4311 | } | |
4312 | ||
a5d16a4d TM |
4313 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4314 | { | |
4315 | struct nfs4_lockdata *data = calldata; | |
4316 | ||
3110ff80 | 4317 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4318 | |
14516c3a TM |
4319 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4320 | return; | |
66179efe | 4321 | |
a5d16a4d | 4322 | data->rpc_status = task->tk_status; |
a5d16a4d | 4323 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4324 | if (data->rpc_status == 0) |
4325 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4326 | else | |
4327 | goto out; | |
4328 | } | |
4329 | if (data->rpc_status == 0) { | |
4330 | memcpy(data->lsp->ls_stateid.data, data->res.stateid.data, | |
4331 | sizeof(data->lsp->ls_stateid.data)); | |
4332 | data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; | |
3d4ff43d | 4333 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 4334 | } |
a5d16a4d | 4335 | out: |
3110ff80 | 4336 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4337 | } |
4338 | ||
4339 | static void nfs4_lock_release(void *calldata) | |
4340 | { | |
4341 | struct nfs4_lockdata *data = calldata; | |
4342 | ||
3110ff80 | 4343 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4344 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4345 | if (data->cancelled != 0) { |
4346 | struct rpc_task *task; | |
4347 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4348 | data->arg.lock_seqid); | |
4349 | if (!IS_ERR(task)) | |
bf294b41 | 4350 | rpc_put_task_async(task); |
3110ff80 | 4351 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4352 | } else |
4353 | nfs_free_seqid(data->arg.lock_seqid); | |
4354 | nfs4_put_lock_state(data->lsp); | |
4355 | put_nfs_open_context(data->ctx); | |
4356 | kfree(data); | |
3110ff80 | 4357 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4358 | } |
4359 | ||
4360 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4361 | .rpc_call_prepare = nfs4_lock_prepare, | |
4362 | .rpc_call_done = nfs4_lock_done, | |
4363 | .rpc_release = nfs4_lock_release, | |
4364 | }; | |
4365 | ||
b257957e AB |
4366 | static const struct rpc_call_ops nfs4_recover_lock_ops = { |
4367 | .rpc_call_prepare = nfs4_recover_lock_prepare, | |
4368 | .rpc_call_done = nfs4_lock_done, | |
4369 | .rpc_release = nfs4_lock_release, | |
4370 | }; | |
4371 | ||
2bee72a6 TM |
4372 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4373 | { | |
2bee72a6 TM |
4374 | switch (error) { |
4375 | case -NFS4ERR_ADMIN_REVOKED: | |
4376 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 4377 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 TM |
4378 | if (new_lock_owner != 0 || |
4379 | (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0) | |
ecac799a | 4380 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
4381 | break; |
4382 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 4383 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
4384 | case -NFS4ERR_EXPIRED: |
4385 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
4386 | }; |
4387 | } | |
4388 | ||
afe6c27c | 4389 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4390 | { |
4391 | struct nfs4_lockdata *data; | |
4392 | struct rpc_task *task; | |
5138fde0 TM |
4393 | struct rpc_message msg = { |
4394 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4395 | .rpc_cred = state->owner->so_cred, | |
4396 | }; | |
c970aa85 TM |
4397 | struct rpc_task_setup task_setup_data = { |
4398 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4399 | .rpc_message = &msg, |
c970aa85 | 4400 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4401 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4402 | .flags = RPC_TASK_ASYNC, |
4403 | }; | |
a5d16a4d TM |
4404 | int ret; |
4405 | ||
3110ff80 | 4406 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4407 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4408 | fl->fl_u.nfs4_fl.owner, |
4409 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4410 | if (data == NULL) |
4411 | return -ENOMEM; | |
4412 | if (IS_SETLKW(cmd)) | |
4413 | data->arg.block = 1; | |
b257957e AB |
4414 | if (recovery_type > NFS_LOCK_NEW) { |
4415 | if (recovery_type == NFS_LOCK_RECLAIM) | |
afe6c27c | 4416 | data->arg.reclaim = NFS_LOCK_RECLAIM; |
b257957e AB |
4417 | task_setup_data.callback_ops = &nfs4_recover_lock_ops; |
4418 | } | |
1174dd1f TM |
4419 | msg.rpc_argp = &data->arg; |
4420 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4421 | task_setup_data.callback_data = data; |
4422 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 4423 | if (IS_ERR(task)) |
a5d16a4d | 4424 | return PTR_ERR(task); |
a5d16a4d TM |
4425 | ret = nfs4_wait_for_completion_rpc_task(task); |
4426 | if (ret == 0) { | |
4427 | ret = data->rpc_status; | |
2bee72a6 TM |
4428 | if (ret) |
4429 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4430 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4431 | } else |
4432 | data->cancelled = 1; | |
e6b3c4db | 4433 | rpc_put_task(task); |
3110ff80 | 4434 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4435 | return ret; |
1da177e4 LT |
4436 | } |
4437 | ||
4438 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4439 | { | |
202b50dc TM |
4440 | struct nfs_server *server = NFS_SERVER(state->inode); |
4441 | struct nfs4_exception exception = { }; | |
4442 | int err; | |
4443 | ||
4444 | do { | |
42a2d13e TM |
4445 | /* Cache the lock if possible... */ |
4446 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4447 | return 0; | |
afe6c27c | 4448 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 4449 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
4450 | break; |
4451 | nfs4_handle_exception(server, err, &exception); | |
4452 | } while (exception.retry); | |
4453 | return err; | |
1da177e4 LT |
4454 | } |
4455 | ||
4456 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4457 | { | |
202b50dc TM |
4458 | struct nfs_server *server = NFS_SERVER(state->inode); |
4459 | struct nfs4_exception exception = { }; | |
4460 | int err; | |
4461 | ||
6bfc93ef TM |
4462 | err = nfs4_set_lock_state(state, request); |
4463 | if (err != 0) | |
4464 | return err; | |
202b50dc | 4465 | do { |
42a2d13e TM |
4466 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4467 | return 0; | |
afe6c27c | 4468 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
4469 | switch (err) { |
4470 | default: | |
4471 | goto out; | |
4472 | case -NFS4ERR_GRACE: | |
4473 | case -NFS4ERR_DELAY: | |
4474 | nfs4_handle_exception(server, err, &exception); | |
4475 | err = 0; | |
4476 | } | |
202b50dc | 4477 | } while (exception.retry); |
a9ed2e25 | 4478 | out: |
202b50dc | 4479 | return err; |
1da177e4 LT |
4480 | } |
4481 | ||
f062eb6c BS |
4482 | #if defined(CONFIG_NFS_V4_1) |
4483 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4484 | { | |
4485 | int status; | |
4486 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4487 | ||
4488 | status = nfs41_test_stateid(server, state); | |
4489 | if (status == NFS_OK) | |
4490 | return 0; | |
4491 | nfs41_free_stateid(server, state); | |
4492 | return nfs4_lock_expired(state, request); | |
4493 | } | |
4494 | #endif | |
4495 | ||
1da177e4 LT |
4496 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4497 | { | |
19e03c57 | 4498 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 4499 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 4500 | int status = -ENOLCK; |
1da177e4 | 4501 | |
8e469ebd TM |
4502 | if ((fl_flags & FL_POSIX) && |
4503 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
4504 | goto out; | |
6bfc93ef | 4505 | /* Is this a delegated open? */ |
6bfc93ef TM |
4506 | status = nfs4_set_lock_state(state, request); |
4507 | if (status != 0) | |
4508 | goto out; | |
01c3b861 TM |
4509 | request->fl_flags |= FL_ACCESS; |
4510 | status = do_vfs_lock(request->fl_file, request); | |
4511 | if (status < 0) | |
4512 | goto out; | |
19e03c57 | 4513 | down_read(&nfsi->rwsem); |
01c3b861 | 4514 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 4515 | /* Yes: cache locks! */ |
01c3b861 | 4516 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
4517 | request->fl_flags = fl_flags & ~FL_SLEEP; |
4518 | status = do_vfs_lock(request->fl_file, request); | |
4519 | goto out_unlock; | |
01c3b861 | 4520 | } |
afe6c27c | 4521 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 4522 | if (status != 0) |
01c3b861 | 4523 | goto out_unlock; |
6bfc93ef | 4524 | /* Note: we always want to sleep here! */ |
01c3b861 | 4525 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 4526 | if (do_vfs_lock(request->fl_file, request) < 0) |
3110ff80 | 4527 | printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __func__); |
01c3b861 | 4528 | out_unlock: |
19e03c57 | 4529 | up_read(&nfsi->rwsem); |
01c3b861 TM |
4530 | out: |
4531 | request->fl_flags = fl_flags; | |
1da177e4 LT |
4532 | return status; |
4533 | } | |
4534 | ||
4535 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4536 | { | |
4537 | struct nfs4_exception exception = { }; | |
4538 | int err; | |
4539 | ||
4540 | do { | |
965b5d67 TM |
4541 | err = _nfs4_proc_setlk(state, cmd, request); |
4542 | if (err == -NFS4ERR_DENIED) | |
4543 | err = -EAGAIN; | |
1da177e4 | 4544 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 4545 | err, &exception); |
1da177e4 LT |
4546 | } while (exception.retry); |
4547 | return err; | |
4548 | } | |
4549 | ||
4550 | static int | |
4551 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
4552 | { | |
4553 | struct nfs_open_context *ctx; | |
4554 | struct nfs4_state *state; | |
4555 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
4556 | int status; | |
4557 | ||
4558 | /* verify open state */ | |
cd3758e3 | 4559 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
4560 | state = ctx->state; |
4561 | ||
4562 | if (request->fl_start < 0 || request->fl_end < 0) | |
4563 | return -EINVAL; | |
4564 | ||
d953126a TM |
4565 | if (IS_GETLK(cmd)) { |
4566 | if (state != NULL) | |
4567 | return nfs4_proc_getlk(state, F_GETLK, request); | |
4568 | return 0; | |
4569 | } | |
1da177e4 LT |
4570 | |
4571 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
4572 | return -EINVAL; | |
4573 | ||
d953126a TM |
4574 | if (request->fl_type == F_UNLCK) { |
4575 | if (state != NULL) | |
4576 | return nfs4_proc_unlck(state, cmd, request); | |
4577 | return 0; | |
4578 | } | |
1da177e4 | 4579 | |
d953126a TM |
4580 | if (state == NULL) |
4581 | return -ENOLCK; | |
1da177e4 LT |
4582 | do { |
4583 | status = nfs4_proc_setlk(state, cmd, request); | |
4584 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
4585 | break; | |
4586 | timeout = nfs4_set_lock_task_retry(timeout); | |
4587 | status = -ERESTARTSYS; | |
4588 | if (signalled()) | |
4589 | break; | |
4590 | } while(status < 0); | |
1da177e4 LT |
4591 | return status; |
4592 | } | |
4593 | ||
888e694c TM |
4594 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
4595 | { | |
4596 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4597 | struct nfs4_exception exception = { }; | |
4598 | int err; | |
4599 | ||
4600 | err = nfs4_set_lock_state(state, fl); | |
4601 | if (err != 0) | |
4602 | goto out; | |
4603 | do { | |
afe6c27c | 4604 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
d5122201 TM |
4605 | switch (err) { |
4606 | default: | |
4607 | printk(KERN_ERR "%s: unhandled error %d.\n", | |
4608 | __func__, err); | |
4609 | case 0: | |
965b5d67 | 4610 | case -ESTALE: |
d5122201 TM |
4611 | goto out; |
4612 | case -NFS4ERR_EXPIRED: | |
0ced63d1 | 4613 | nfs4_schedule_stateid_recovery(server, state); |
d5122201 | 4614 | case -NFS4ERR_STALE_CLIENTID: |
965b5d67 | 4615 | case -NFS4ERR_STALE_STATEID: |
0400a6b0 TM |
4616 | nfs4_schedule_lease_recovery(server->nfs_client); |
4617 | goto out; | |
74e7bb73 RL |
4618 | case -NFS4ERR_BADSESSION: |
4619 | case -NFS4ERR_BADSLOT: | |
4620 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4621 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4622 | case -NFS4ERR_DEADSESSION: | |
0400a6b0 | 4623 | nfs4_schedule_session_recovery(server->nfs_client->cl_session); |
d5122201 | 4624 | goto out; |
965b5d67 TM |
4625 | case -ERESTARTSYS: |
4626 | /* | |
4627 | * The show must go on: exit, but mark the | |
4628 | * stateid as needing recovery. | |
4629 | */ | |
4630 | case -NFS4ERR_ADMIN_REVOKED: | |
4631 | case -NFS4ERR_BAD_STATEID: | |
4632 | case -NFS4ERR_OPENMODE: | |
0400a6b0 | 4633 | nfs4_schedule_stateid_recovery(server, state); |
965b5d67 TM |
4634 | err = 0; |
4635 | goto out; | |
168667c4 TM |
4636 | case -EKEYEXPIRED: |
4637 | /* | |
4638 | * User RPCSEC_GSS context has expired. | |
4639 | * We cannot recover this stateid now, so | |
4640 | * skip it and allow recovery thread to | |
4641 | * proceed. | |
4642 | */ | |
4643 | err = 0; | |
4644 | goto out; | |
965b5d67 TM |
4645 | case -ENOMEM: |
4646 | case -NFS4ERR_DENIED: | |
4647 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
4648 | err = 0; | |
4649 | goto out; | |
d5122201 TM |
4650 | case -NFS4ERR_DELAY: |
4651 | break; | |
4652 | } | |
888e694c TM |
4653 | err = nfs4_handle_exception(server, err, &exception); |
4654 | } while (exception.retry); | |
4655 | out: | |
4656 | return err; | |
4657 | } | |
6b3b5496 | 4658 | |
d3c7b7cc TM |
4659 | static void nfs4_release_lockowner_release(void *calldata) |
4660 | { | |
4661 | kfree(calldata); | |
4662 | } | |
4663 | ||
4664 | const struct rpc_call_ops nfs4_release_lockowner_ops = { | |
4665 | .rpc_release = nfs4_release_lockowner_release, | |
4666 | }; | |
4667 | ||
4668 | void nfs4_release_lockowner(const struct nfs4_lock_state *lsp) | |
4669 | { | |
4670 | struct nfs_server *server = lsp->ls_state->owner->so_server; | |
4671 | struct nfs_release_lockowner_args *args; | |
4672 | struct rpc_message msg = { | |
4673 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
4674 | }; | |
4675 | ||
4676 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
4677 | return; | |
4678 | args = kmalloc(sizeof(*args), GFP_NOFS); | |
4679 | if (!args) | |
4680 | return; | |
4681 | args->lock_owner.clientid = server->nfs_client->cl_clientid; | |
d2d7ce28 | 4682 | args->lock_owner.id = lsp->ls_id; |
d035c36c | 4683 | args->lock_owner.s_dev = server->s_dev; |
d3c7b7cc TM |
4684 | msg.rpc_argp = args; |
4685 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, args); | |
4686 | } | |
4687 | ||
aa1870af BF |
4688 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
4689 | ||
64c2ce8b AK |
4690 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
4691 | const void *buf, size_t buflen, | |
4692 | int flags, int type) | |
6b3b5496 | 4693 | { |
64c2ce8b AK |
4694 | if (strcmp(key, "") != 0) |
4695 | return -EINVAL; | |
4b580ee3 | 4696 | |
64c2ce8b | 4697 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4698 | } |
4699 | ||
64c2ce8b AK |
4700 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
4701 | void *buf, size_t buflen, int type) | |
6b3b5496 | 4702 | { |
64c2ce8b AK |
4703 | if (strcmp(key, "") != 0) |
4704 | return -EINVAL; | |
aa1870af | 4705 | |
64c2ce8b | 4706 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4707 | } |
4708 | ||
64c2ce8b AK |
4709 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
4710 | size_t list_len, const char *name, | |
4711 | size_t name_len, int type) | |
6b3b5496 | 4712 | { |
64c2ce8b | 4713 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 4714 | |
096455a2 BF |
4715 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
4716 | return 0; | |
64c2ce8b AK |
4717 | |
4718 | if (list && len <= list_len) | |
4719 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 4720 | return len; |
6b3b5496 BF |
4721 | } |
4722 | ||
533eb461 AA |
4723 | /* |
4724 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
4725 | */ | |
69aaaae1 TM |
4726 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
4727 | { | |
533eb461 AA |
4728 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
4729 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
4730 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
4731 | (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL))) | |
69aaaae1 TM |
4732 | return; |
4733 | ||
4734 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
4735 | NFS_ATTR_FATTR_NLINK; | |
4736 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; | |
4737 | fattr->nlink = 2; | |
4738 | } | |
4739 | ||
56659e99 | 4740 | int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, |
7aaa0b3b | 4741 | struct nfs4_fs_locations *fs_locations, struct page *page) |
683b57b4 TM |
4742 | { |
4743 | struct nfs_server *server = NFS_SERVER(dir); | |
4744 | u32 bitmask[2] = { | |
361e624f | 4745 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
4746 | }; |
4747 | struct nfs4_fs_locations_arg args = { | |
4748 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 4749 | .name = name, |
683b57b4 TM |
4750 | .page = page, |
4751 | .bitmask = bitmask, | |
4752 | }; | |
22958463 BH |
4753 | struct nfs4_fs_locations_res res = { |
4754 | .fs_locations = fs_locations, | |
4755 | }; | |
683b57b4 TM |
4756 | struct rpc_message msg = { |
4757 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
4758 | .rpc_argp = &args, | |
22958463 | 4759 | .rpc_resp = &res, |
683b57b4 TM |
4760 | }; |
4761 | int status; | |
4762 | ||
3110ff80 | 4763 | dprintk("%s: start\n", __func__); |
533eb461 AA |
4764 | |
4765 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
4766 | * is not supported */ | |
4767 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
4768 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
4769 | else | |
4770 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
4771 | ||
c228fd3a | 4772 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 4773 | fs_locations->server = server; |
830b8e33 | 4774 | fs_locations->nlocations = 0; |
7c513058 | 4775 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 4776 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
4777 | return status; |
4778 | } | |
4779 | ||
5a5ea0d4 BS |
4780 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) |
4781 | { | |
4782 | int status; | |
4783 | struct nfs4_secinfo_arg args = { | |
4784 | .dir_fh = NFS_FH(dir), | |
4785 | .name = name, | |
4786 | }; | |
4787 | struct nfs4_secinfo_res res = { | |
4788 | .flavors = flavors, | |
4789 | }; | |
4790 | struct rpc_message msg = { | |
4791 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
4792 | .rpc_argp = &args, | |
4793 | .rpc_resp = &res, | |
4794 | }; | |
4795 | ||
4796 | dprintk("NFS call secinfo %s\n", name->name); | |
4797 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); | |
4798 | dprintk("NFS reply secinfo: %d\n", status); | |
4799 | return status; | |
4800 | } | |
4801 | ||
4802 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) | |
4803 | { | |
4804 | struct nfs4_exception exception = { }; | |
4805 | int err; | |
4806 | do { | |
4807 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
4808 | _nfs4_proc_secinfo(dir, name, flavors), | |
4809 | &exception); | |
4810 | } while (exception.retry); | |
4811 | return err; | |
4812 | } | |
4813 | ||
557134a3 | 4814 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
4815 | /* |
4816 | * Check the exchange flags returned by the server for invalid flags, having | |
4817 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
4818 | * DS flags set. | |
4819 | */ | |
4820 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
4821 | { | |
4822 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
4823 | goto out_inval; | |
4824 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
4825 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
4826 | goto out_inval; | |
4827 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
4828 | goto out_inval; | |
4829 | return NFS_OK; | |
4830 | out_inval: | |
4831 | return -NFS4ERR_INVAL; | |
4832 | } | |
4833 | ||
78fe0f41 WAA |
4834 | static bool |
4835 | nfs41_same_server_scope(struct server_scope *a, struct server_scope *b) | |
4836 | { | |
4837 | if (a->server_scope_sz == b->server_scope_sz && | |
4838 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
4839 | return true; | |
4840 | ||
4841 | return false; | |
4842 | } | |
4843 | ||
99fe60d0 BH |
4844 | /* |
4845 | * nfs4_proc_exchange_id() | |
4846 | * | |
4847 | * Since the clientid has expired, all compounds using sessions | |
4848 | * associated with the stale clientid will be returning | |
4849 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
4850 | * be in some phase of session reset. | |
4851 | */ | |
4d643d1d | 4852 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
4853 | { |
4854 | nfs4_verifier verifier; | |
4855 | struct nfs41_exchange_id_args args = { | |
4856 | .client = clp, | |
357f54d6 | 4857 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, |
99fe60d0 BH |
4858 | }; |
4859 | struct nfs41_exchange_id_res res = { | |
4860 | .client = clp, | |
4861 | }; | |
4862 | int status; | |
4863 | struct rpc_message msg = { | |
4864 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
4865 | .rpc_argp = &args, | |
4866 | .rpc_resp = &res, | |
4867 | .rpc_cred = cred, | |
4868 | }; | |
4869 | __be32 *p; | |
4870 | ||
4871 | dprintk("--> %s\n", __func__); | |
4872 | BUG_ON(clp == NULL); | |
a7b72103 | 4873 | |
99fe60d0 BH |
4874 | p = (u32 *)verifier.data; |
4875 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); | |
4876 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
4877 | args.verifier = &verifier; | |
4878 | ||
c7a360b0 AA |
4879 | args.id_len = scnprintf(args.id, sizeof(args.id), |
4880 | "%s/%s.%s/%u", | |
4881 | clp->cl_ipaddr, | |
4882 | init_utsname()->nodename, | |
4883 | init_utsname()->domainname, | |
4884 | clp->cl_rpcclient->cl_auth->au_flavor); | |
99fe60d0 | 4885 | |
78fe0f41 WAA |
4886 | res.server_scope = kzalloc(sizeof(struct server_scope), GFP_KERNEL); |
4887 | if (unlikely(!res.server_scope)) | |
4888 | return -ENOMEM; | |
4889 | ||
1bd714f2 | 4890 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c7a360b0 AA |
4891 | if (!status) |
4892 | status = nfs4_check_cl_exchange_flags(clp->cl_exchange_flags); | |
78fe0f41 WAA |
4893 | |
4894 | if (!status) { | |
4895 | if (clp->server_scope && | |
4896 | !nfs41_same_server_scope(clp->server_scope, | |
4897 | res.server_scope)) { | |
4898 | dprintk("%s: server_scope mismatch detected\n", | |
4899 | __func__); | |
4900 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
4901 | kfree(clp->server_scope); | |
4902 | clp->server_scope = NULL; | |
4903 | } | |
4904 | ||
4905 | if (!clp->server_scope) | |
4906 | clp->server_scope = res.server_scope; | |
4907 | else | |
4908 | kfree(res.server_scope); | |
4909 | } | |
4910 | ||
99fe60d0 BH |
4911 | dprintk("<-- %s status= %d\n", __func__, status); |
4912 | return status; | |
4913 | } | |
4914 | ||
2050f0cc AA |
4915 | struct nfs4_get_lease_time_data { |
4916 | struct nfs4_get_lease_time_args *args; | |
4917 | struct nfs4_get_lease_time_res *res; | |
4918 | struct nfs_client *clp; | |
4919 | }; | |
4920 | ||
4921 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
4922 | void *calldata) | |
4923 | { | |
4924 | int ret; | |
4925 | struct nfs4_get_lease_time_data *data = | |
4926 | (struct nfs4_get_lease_time_data *)calldata; | |
4927 | ||
4928 | dprintk("--> %s\n", __func__); | |
689cf5c1 | 4929 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
2050f0cc AA |
4930 | /* just setup sequence, do not trigger session recovery |
4931 | since we're invoked within one */ | |
4932 | ret = nfs41_setup_sequence(data->clp->cl_session, | |
689cf5c1 AB |
4933 | &data->args->la_seq_args, |
4934 | &data->res->lr_seq_res, 0, task); | |
2050f0cc AA |
4935 | |
4936 | BUG_ON(ret == -EAGAIN); | |
4937 | rpc_call_start(task); | |
4938 | dprintk("<-- %s\n", __func__); | |
4939 | } | |
4940 | ||
4941 | /* | |
4942 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
4943 | * from sequence operation or clientid errors. | |
4944 | */ | |
4945 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
4946 | { | |
4947 | struct nfs4_get_lease_time_data *data = | |
4948 | (struct nfs4_get_lease_time_data *)calldata; | |
4949 | ||
4950 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
4951 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
4952 | return; | |
2050f0cc AA |
4953 | switch (task->tk_status) { |
4954 | case -NFS4ERR_DELAY: | |
4955 | case -NFS4ERR_GRACE: | |
4956 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
4957 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
4958 | task->tk_status = 0; | |
a8a4ae3a AA |
4959 | /* fall through */ |
4960 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 4961 | rpc_restart_call_prepare(task); |
2050f0cc AA |
4962 | return; |
4963 | } | |
2050f0cc AA |
4964 | dprintk("<-- %s\n", __func__); |
4965 | } | |
4966 | ||
4967 | struct rpc_call_ops nfs4_get_lease_time_ops = { | |
4968 | .rpc_call_prepare = nfs4_get_lease_time_prepare, | |
4969 | .rpc_call_done = nfs4_get_lease_time_done, | |
4970 | }; | |
4971 | ||
4972 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
4973 | { | |
4974 | struct rpc_task *task; | |
4975 | struct nfs4_get_lease_time_args args; | |
4976 | struct nfs4_get_lease_time_res res = { | |
4977 | .lr_fsinfo = fsinfo, | |
4978 | }; | |
4979 | struct nfs4_get_lease_time_data data = { | |
4980 | .args = &args, | |
4981 | .res = &res, | |
4982 | .clp = clp, | |
4983 | }; | |
4984 | struct rpc_message msg = { | |
4985 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
4986 | .rpc_argp = &args, | |
4987 | .rpc_resp = &res, | |
4988 | }; | |
4989 | struct rpc_task_setup task_setup = { | |
4990 | .rpc_client = clp->cl_rpcclient, | |
4991 | .rpc_message = &msg, | |
4992 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
4993 | .callback_data = &data, |
4994 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
4995 | }; |
4996 | int status; | |
4997 | ||
2050f0cc AA |
4998 | dprintk("--> %s\n", __func__); |
4999 | task = rpc_run_task(&task_setup); | |
5000 | ||
5001 | if (IS_ERR(task)) | |
5002 | status = PTR_ERR(task); | |
5003 | else { | |
5004 | status = task->tk_status; | |
5005 | rpc_put_task(task); | |
5006 | } | |
5007 | dprintk("<-- %s return %d\n", __func__, status); | |
5008 | ||
5009 | return status; | |
5010 | } | |
5011 | ||
b73dafa7 RL |
5012 | /* |
5013 | * Reset a slot table | |
5014 | */ | |
104aeba4 AA |
5015 | static int nfs4_reset_slot_table(struct nfs4_slot_table *tbl, u32 max_reqs, |
5016 | int ivalue) | |
ac72b7b3 | 5017 | { |
104aeba4 | 5018 | struct nfs4_slot *new = NULL; |
b73dafa7 | 5019 | int i; |
ac72b7b3 AA |
5020 | int ret = 0; |
5021 | ||
104aeba4 AA |
5022 | dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__, |
5023 | max_reqs, tbl->max_slots); | |
ac72b7b3 | 5024 | |
104aeba4 AA |
5025 | /* Does the newly negotiated max_reqs match the existing slot table? */ |
5026 | if (max_reqs != tbl->max_slots) { | |
5027 | ret = -ENOMEM; | |
5028 | new = kmalloc(max_reqs * sizeof(struct nfs4_slot), | |
8535b2be | 5029 | GFP_NOFS); |
104aeba4 AA |
5030 | if (!new) |
5031 | goto out; | |
5032 | ret = 0; | |
5033 | kfree(tbl->slots); | |
ac72b7b3 AA |
5034 | } |
5035 | spin_lock(&tbl->slot_tbl_lock); | |
104aeba4 AA |
5036 | if (new) { |
5037 | tbl->slots = new; | |
5038 | tbl->max_slots = max_reqs; | |
5039 | } | |
5040 | for (i = 0; i < tbl->max_slots; ++i) | |
b73dafa7 | 5041 | tbl->slots[i].seq_nr = ivalue; |
ac72b7b3 AA |
5042 | spin_unlock(&tbl->slot_tbl_lock); |
5043 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, | |
5044 | tbl, tbl->slots, tbl->max_slots); | |
5045 | out: | |
5046 | dprintk("<-- %s: return %d\n", __func__, ret); | |
5047 | return ret; | |
5048 | } | |
5049 | ||
f8625a6a RL |
5050 | /* Destroy the slot table */ |
5051 | static void nfs4_destroy_slot_tables(struct nfs4_session *session) | |
5052 | { | |
5053 | if (session->fc_slot_table.slots != NULL) { | |
5054 | kfree(session->fc_slot_table.slots); | |
5055 | session->fc_slot_table.slots = NULL; | |
5056 | } | |
5057 | if (session->bc_slot_table.slots != NULL) { | |
5058 | kfree(session->bc_slot_table.slots); | |
5059 | session->bc_slot_table.slots = NULL; | |
5060 | } | |
5061 | return; | |
5062 | } | |
5063 | ||
fc931582 AA |
5064 | /* |
5065 | * Initialize slot table | |
5066 | */ | |
050047ce RL |
5067 | static int nfs4_init_slot_table(struct nfs4_slot_table *tbl, |
5068 | int max_slots, int ivalue) | |
fc931582 | 5069 | { |
fc931582 AA |
5070 | struct nfs4_slot *slot; |
5071 | int ret = -ENOMEM; | |
5072 | ||
5073 | BUG_ON(max_slots > NFS4_MAX_SLOT_TABLE); | |
5074 | ||
050047ce | 5075 | dprintk("--> %s: max_reqs=%u\n", __func__, max_slots); |
fc931582 | 5076 | |
8535b2be | 5077 | slot = kcalloc(max_slots, sizeof(struct nfs4_slot), GFP_NOFS); |
fc931582 AA |
5078 | if (!slot) |
5079 | goto out; | |
fc931582 AA |
5080 | ret = 0; |
5081 | ||
5082 | spin_lock(&tbl->slot_tbl_lock); | |
fc931582 AA |
5083 | tbl->max_slots = max_slots; |
5084 | tbl->slots = slot; | |
5085 | tbl->highest_used_slotid = -1; /* no slot is currently used */ | |
5086 | spin_unlock(&tbl->slot_tbl_lock); | |
5087 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, | |
5088 | tbl, tbl->slots, tbl->max_slots); | |
5089 | out: | |
5090 | dprintk("<-- %s: return %d\n", __func__, ret); | |
5091 | return ret; | |
fc931582 AA |
5092 | } |
5093 | ||
050047ce | 5094 | /* |
aacd5537 | 5095 | * Initialize or reset the forechannel and backchannel tables |
050047ce | 5096 | */ |
aacd5537 | 5097 | static int nfs4_setup_session_slot_tables(struct nfs4_session *ses) |
050047ce | 5098 | { |
f26468fb | 5099 | struct nfs4_slot_table *tbl; |
aacd5537 | 5100 | int status; |
050047ce | 5101 | |
aacd5537 AA |
5102 | dprintk("--> %s\n", __func__); |
5103 | /* Fore channel */ | |
5104 | tbl = &ses->fc_slot_table; | |
f26468fb | 5105 | if (tbl->slots == NULL) { |
aacd5537 AA |
5106 | status = nfs4_init_slot_table(tbl, ses->fc_attrs.max_reqs, 1); |
5107 | if (status) /* -ENOMEM */ | |
5108 | return status; | |
5109 | } else { | |
5110 | status = nfs4_reset_slot_table(tbl, ses->fc_attrs.max_reqs, 1); | |
f26468fb TM |
5111 | if (status) |
5112 | return status; | |
5113 | } | |
aacd5537 AA |
5114 | /* Back channel */ |
5115 | tbl = &ses->bc_slot_table; | |
f26468fb | 5116 | if (tbl->slots == NULL) { |
aacd5537 | 5117 | status = nfs4_init_slot_table(tbl, ses->bc_attrs.max_reqs, 0); |
f26468fb | 5118 | if (status) |
aacd5537 AA |
5119 | /* Fore and back channel share a connection so get |
5120 | * both slot tables or neither */ | |
5121 | nfs4_destroy_slot_tables(ses); | |
5122 | } else | |
5123 | status = nfs4_reset_slot_table(tbl, ses->bc_attrs.max_reqs, 0); | |
f8625a6a | 5124 | return status; |
557134a3 AA |
5125 | } |
5126 | ||
5127 | struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) | |
5128 | { | |
5129 | struct nfs4_session *session; | |
5130 | struct nfs4_slot_table *tbl; | |
5131 | ||
8535b2be | 5132 | session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); |
557134a3 AA |
5133 | if (!session) |
5134 | return NULL; | |
76db6d95 | 5135 | |
557134a3 | 5136 | tbl = &session->fc_slot_table; |
9dfdf404 | 5137 | tbl->highest_used_slotid = -1; |
557134a3 | 5138 | spin_lock_init(&tbl->slot_tbl_lock); |
689cf5c1 | 5139 | rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table"); |
42acd021 | 5140 | init_completion(&tbl->complete); |
f8625a6a RL |
5141 | |
5142 | tbl = &session->bc_slot_table; | |
9dfdf404 | 5143 | tbl->highest_used_slotid = -1; |
f8625a6a RL |
5144 | spin_lock_init(&tbl->slot_tbl_lock); |
5145 | rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table"); | |
42acd021 | 5146 | init_completion(&tbl->complete); |
f8625a6a | 5147 | |
1055d76d TM |
5148 | session->session_state = 1<<NFS4_SESSION_INITING; |
5149 | ||
557134a3 AA |
5150 | session->clp = clp; |
5151 | return session; | |
5152 | } | |
5153 | ||
5154 | void nfs4_destroy_session(struct nfs4_session *session) | |
5155 | { | |
5a0ffe54 AA |
5156 | nfs4_proc_destroy_session(session); |
5157 | dprintk("%s Destroy backchannel for xprt %p\n", | |
5158 | __func__, session->clp->cl_rpcclient->cl_xprt); | |
5159 | xprt_destroy_backchannel(session->clp->cl_rpcclient->cl_xprt, | |
5160 | NFS41_BC_MIN_CALLBACKS); | |
f8625a6a | 5161 | nfs4_destroy_slot_tables(session); |
557134a3 AA |
5162 | kfree(session); |
5163 | } | |
5164 | ||
fc931582 AA |
5165 | /* |
5166 | * Initialize the values to be used by the client in CREATE_SESSION | |
5167 | * If nfs4_init_session set the fore channel request and response sizes, | |
5168 | * use them. | |
5169 | * | |
5170 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
5171 | * always set csa_cachethis to FALSE because the current implementation | |
5172 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
5173 | */ | |
5174 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
5175 | { | |
5176 | struct nfs4_session *session = args->client->cl_session; | |
5177 | unsigned int mxrqst_sz = session->fc_attrs.max_rqst_sz, | |
5178 | mxresp_sz = session->fc_attrs.max_resp_sz; | |
5179 | ||
5180 | if (mxrqst_sz == 0) | |
5181 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
5182 | if (mxresp_sz == 0) | |
5183 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
5184 | /* Fore channel attributes */ | |
fc931582 AA |
5185 | args->fc_attrs.max_rqst_sz = mxrqst_sz; |
5186 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 AA |
5187 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
5188 | args->fc_attrs.max_reqs = session->clp->cl_rpcclient->cl_xprt->max_reqs; | |
5189 | ||
5190 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 5191 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
5192 | __func__, |
5193 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 5194 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
5195 | |
5196 | /* Back channel attributes */ | |
fc931582 AA |
5197 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
5198 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
5199 | args->bc_attrs.max_resp_sz_cached = 0; | |
5200 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
5201 | args->bc_attrs.max_reqs = 1; | |
5202 | ||
5203 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
5204 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
5205 | __func__, | |
5206 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
5207 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
5208 | args->bc_attrs.max_reqs); | |
5209 | } | |
5210 | ||
43c2e885 | 5211 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 5212 | { |
43c2e885 BF |
5213 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
5214 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
5215 | ||
43c2e885 BF |
5216 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
5217 | return -EINVAL; | |
5218 | /* | |
5219 | * Our requested max_ops is the minimum we need; we're not | |
5220 | * prepared to break up compounds into smaller pieces than that. | |
5221 | * So, no point even trying to continue if the server won't | |
5222 | * cooperate: | |
5223 | */ | |
5224 | if (rcvd->max_ops < sent->max_ops) | |
5225 | return -EINVAL; | |
5226 | if (rcvd->max_reqs == 0) | |
5227 | return -EINVAL; | |
5228 | return 0; | |
8d35301d AA |
5229 | } |
5230 | ||
43c2e885 BF |
5231 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
5232 | { | |
5233 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
5234 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 5235 | |
43c2e885 BF |
5236 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
5237 | return -EINVAL; | |
5238 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
5239 | return -EINVAL; | |
5240 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
5241 | return -EINVAL; | |
5242 | /* These would render the backchannel useless: */ | |
5243 | if (rcvd->max_ops == 0) | |
5244 | return -EINVAL; | |
5245 | if (rcvd->max_reqs == 0) | |
5246 | return -EINVAL; | |
5247 | return 0; | |
5248 | } | |
8d35301d | 5249 | |
8d35301d AA |
5250 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
5251 | struct nfs4_session *session) | |
5252 | { | |
43c2e885 | 5253 | int ret; |
8d35301d | 5254 | |
43c2e885 BF |
5255 | ret = nfs4_verify_fore_channel_attrs(args, session); |
5256 | if (ret) | |
5257 | return ret; | |
5258 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
5259 | } |
5260 | ||
fc931582 AA |
5261 | static int _nfs4_proc_create_session(struct nfs_client *clp) |
5262 | { | |
5263 | struct nfs4_session *session = clp->cl_session; | |
5264 | struct nfs41_create_session_args args = { | |
5265 | .client = clp, | |
5266 | .cb_program = NFS4_CALLBACK, | |
5267 | }; | |
5268 | struct nfs41_create_session_res res = { | |
5269 | .client = clp, | |
5270 | }; | |
5271 | struct rpc_message msg = { | |
5272 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
5273 | .rpc_argp = &args, | |
5274 | .rpc_resp = &res, | |
5275 | }; | |
5276 | int status; | |
5277 | ||
5278 | nfs4_init_channel_attrs(&args); | |
0f91421e | 5279 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 5280 | |
1bd714f2 | 5281 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
fc931582 | 5282 | |
8d35301d AA |
5283 | if (!status) |
5284 | /* Verify the session's negotiated channel_attrs values */ | |
5285 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
5286 | if (!status) { |
5287 | /* Increment the clientid slot sequence id */ | |
5288 | clp->cl_seqid++; | |
5289 | } | |
5290 | ||
5291 | return status; | |
5292 | } | |
5293 | ||
5294 | /* | |
5295 | * Issues a CREATE_SESSION operation to the server. | |
5296 | * It is the responsibility of the caller to verify the session is | |
5297 | * expired before calling this routine. | |
5298 | */ | |
f26468fb | 5299 | int nfs4_proc_create_session(struct nfs_client *clp) |
fc931582 AA |
5300 | { |
5301 | int status; | |
5302 | unsigned *ptr; | |
fc931582 AA |
5303 | struct nfs4_session *session = clp->cl_session; |
5304 | ||
5305 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
5306 | ||
fd954ae1 | 5307 | status = _nfs4_proc_create_session(clp); |
fc931582 AA |
5308 | if (status) |
5309 | goto out; | |
5310 | ||
aacd5537 AA |
5311 | /* Init or reset the session slot tables */ |
5312 | status = nfs4_setup_session_slot_tables(session); | |
5313 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
5314 | if (status) |
5315 | goto out; | |
5316 | ||
5317 | ptr = (unsigned *)&session->sess_id.data[0]; | |
5318 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
5319 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
5320 | out: |
5321 | dprintk("<-- %s\n", __func__); | |
5322 | return status; | |
5323 | } | |
5324 | ||
0f3e66c6 AA |
5325 | /* |
5326 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
5327 | * The caller must serialize access to this routine. | |
5328 | */ | |
5329 | int nfs4_proc_destroy_session(struct nfs4_session *session) | |
5330 | { | |
5331 | int status = 0; | |
5332 | struct rpc_message msg; | |
5333 | ||
5334 | dprintk("--> nfs4_proc_destroy_session\n"); | |
5335 | ||
5336 | /* session is still being setup */ | |
5337 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
5338 | return status; | |
5339 | ||
5340 | msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION]; | |
5341 | msg.rpc_argp = session; | |
5342 | msg.rpc_resp = NULL; | |
5343 | msg.rpc_cred = NULL; | |
1bd714f2 | 5344 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
0f3e66c6 AA |
5345 | |
5346 | if (status) | |
5347 | printk(KERN_WARNING | |
5348 | "Got error %d from the server on DESTROY_SESSION. " | |
5349 | "Session has been destroyed regardless...\n", status); | |
5350 | ||
5351 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
5352 | return status; | |
5353 | } | |
5354 | ||
fccba804 TM |
5355 | int nfs4_init_session(struct nfs_server *server) |
5356 | { | |
5357 | struct nfs_client *clp = server->nfs_client; | |
2449ea2e | 5358 | struct nfs4_session *session; |
68bf05ef | 5359 | unsigned int rsize, wsize; |
fccba804 TM |
5360 | int ret; |
5361 | ||
5362 | if (!nfs4_has_session(clp)) | |
5363 | return 0; | |
5364 | ||
1055d76d TM |
5365 | session = clp->cl_session; |
5366 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5367 | return 0; | |
5368 | ||
68bf05ef AA |
5369 | rsize = server->rsize; |
5370 | if (rsize == 0) | |
5371 | rsize = NFS_MAX_FILE_IO_SIZE; | |
5372 | wsize = server->wsize; | |
5373 | if (wsize == 0) | |
5374 | wsize = NFS_MAX_FILE_IO_SIZE; | |
5375 | ||
68bf05ef AA |
5376 | session->fc_attrs.max_rqst_sz = wsize + nfs41_maxwrite_overhead; |
5377 | session->fc_attrs.max_resp_sz = rsize + nfs41_maxread_overhead; | |
2449ea2e | 5378 | |
fccba804 TM |
5379 | ret = nfs4_recover_expired_lease(server); |
5380 | if (!ret) | |
5381 | ret = nfs4_check_client_ready(clp); | |
5382 | return ret; | |
5383 | } | |
5384 | ||
d83217c1 AA |
5385 | int nfs4_init_ds_session(struct nfs_client *clp) |
5386 | { | |
5387 | struct nfs4_session *session = clp->cl_session; | |
5388 | int ret; | |
5389 | ||
5390 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5391 | return 0; | |
5392 | ||
5393 | ret = nfs4_client_recover_expired_lease(clp); | |
5394 | if (!ret) | |
5395 | /* Test for the DS role */ | |
5396 | if (!is_ds_client(clp)) | |
5397 | ret = -ENODEV; | |
5398 | if (!ret) | |
5399 | ret = nfs4_check_client_ready(clp); | |
5400 | return ret; | |
5401 | ||
5402 | } | |
5403 | EXPORT_SYMBOL_GPL(nfs4_init_ds_session); | |
5404 | ||
5405 | ||
fc01cea9 AA |
5406 | /* |
5407 | * Renew the cl_session lease. | |
5408 | */ | |
d5f8d3fe TM |
5409 | struct nfs4_sequence_data { |
5410 | struct nfs_client *clp; | |
5411 | struct nfs4_sequence_args args; | |
5412 | struct nfs4_sequence_res res; | |
5413 | }; | |
5414 | ||
dc96aef9 AB |
5415 | static void nfs41_sequence_release(void *data) |
5416 | { | |
d5f8d3fe TM |
5417 | struct nfs4_sequence_data *calldata = data; |
5418 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 5419 | |
7135840f AB |
5420 | if (atomic_read(&clp->cl_count) > 1) |
5421 | nfs4_schedule_state_renewal(clp); | |
5422 | nfs_put_client(clp); | |
d5f8d3fe | 5423 | kfree(calldata); |
dc96aef9 AB |
5424 | } |
5425 | ||
aa5190d0 TM |
5426 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5427 | { | |
5428 | switch(task->tk_status) { | |
5429 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5430 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5431 | return -EAGAIN; | |
5432 | default: | |
0400a6b0 | 5433 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5434 | } |
5435 | return 0; | |
5436 | } | |
5437 | ||
dc96aef9 | 5438 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 5439 | { |
d5f8d3fe TM |
5440 | struct nfs4_sequence_data *calldata = data; |
5441 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 5442 | |
14516c3a TM |
5443 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
5444 | return; | |
fc01cea9 AA |
5445 | |
5446 | if (task->tk_status < 0) { | |
5447 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
5448 | if (atomic_read(&clp->cl_count) == 1) |
5449 | goto out; | |
fc01cea9 | 5450 | |
aa5190d0 TM |
5451 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
5452 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
5453 | return; |
5454 | } | |
5455 | } | |
fc01cea9 | 5456 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 5457 | out: |
fc01cea9 AA |
5458 | dprintk("<-- %s\n", __func__); |
5459 | } | |
5460 | ||
5461 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
5462 | { | |
d5f8d3fe TM |
5463 | struct nfs4_sequence_data *calldata = data; |
5464 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
5465 | struct nfs4_sequence_args *args; |
5466 | struct nfs4_sequence_res *res; | |
5467 | ||
fc01cea9 AA |
5468 | args = task->tk_msg.rpc_argp; |
5469 | res = task->tk_msg.rpc_resp; | |
5470 | ||
035168ab | 5471 | if (nfs41_setup_sequence(clp->cl_session, args, res, 0, task)) |
fc01cea9 AA |
5472 | return; |
5473 | rpc_call_start(task); | |
5474 | } | |
5475 | ||
5476 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
5477 | .rpc_call_done = nfs41_sequence_call_done, | |
5478 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 5479 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
5480 | }; |
5481 | ||
71ac6da9 | 5482 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) |
fc01cea9 | 5483 | { |
d5f8d3fe | 5484 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
5485 | struct rpc_message msg = { |
5486 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
5487 | .rpc_cred = cred, | |
5488 | }; | |
71ac6da9 TM |
5489 | struct rpc_task_setup task_setup_data = { |
5490 | .rpc_client = clp->cl_rpcclient, | |
5491 | .rpc_message = &msg, | |
5492 | .callback_ops = &nfs41_sequence_ops, | |
5493 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT, | |
5494 | }; | |
fc01cea9 | 5495 | |
7135840f | 5496 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 5497 | return ERR_PTR(-EIO); |
dfb4f309 | 5498 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 5499 | if (calldata == NULL) { |
7135840f | 5500 | nfs_put_client(clp); |
71ac6da9 | 5501 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 5502 | } |
d5f8d3fe TM |
5503 | msg.rpc_argp = &calldata->args; |
5504 | msg.rpc_resp = &calldata->res; | |
5505 | calldata->clp = clp; | |
71ac6da9 | 5506 | task_setup_data.callback_data = calldata; |
fc01cea9 | 5507 | |
71ac6da9 TM |
5508 | return rpc_run_task(&task_setup_data); |
5509 | } | |
5510 | ||
2f60ea6b | 5511 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
5512 | { |
5513 | struct rpc_task *task; | |
5514 | int ret = 0; | |
5515 | ||
2f60ea6b TM |
5516 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
5517 | return 0; | |
71ac6da9 TM |
5518 | task = _nfs41_proc_sequence(clp, cred); |
5519 | if (IS_ERR(task)) | |
5520 | ret = PTR_ERR(task); | |
5521 | else | |
bf294b41 | 5522 | rpc_put_task_async(task); |
71ac6da9 TM |
5523 | dprintk("<-- %s status=%d\n", __func__, ret); |
5524 | return ret; | |
5525 | } | |
5526 | ||
5527 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5528 | { | |
5529 | struct rpc_task *task; | |
5530 | int ret; | |
5531 | ||
5532 | task = _nfs41_proc_sequence(clp, cred); | |
5533 | if (IS_ERR(task)) { | |
5534 | ret = PTR_ERR(task); | |
5535 | goto out; | |
5536 | } | |
5537 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
5538 | if (!ret) { |
5539 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
5540 | ||
5541 | if (task->tk_status == 0) | |
5542 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 5543 | ret = task->tk_status; |
b4410c2f | 5544 | } |
71ac6da9 TM |
5545 | rpc_put_task(task); |
5546 | out: | |
5547 | dprintk("<-- %s status=%d\n", __func__, ret); | |
5548 | return ret; | |
fc01cea9 AA |
5549 | } |
5550 | ||
fce5c838 RL |
5551 | struct nfs4_reclaim_complete_data { |
5552 | struct nfs_client *clp; | |
5553 | struct nfs41_reclaim_complete_args arg; | |
5554 | struct nfs41_reclaim_complete_res res; | |
5555 | }; | |
5556 | ||
5557 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
5558 | { | |
5559 | struct nfs4_reclaim_complete_data *calldata = data; | |
5560 | ||
b257957e | 5561 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
035168ab TM |
5562 | if (nfs41_setup_sequence(calldata->clp->cl_session, |
5563 | &calldata->arg.seq_args, | |
fce5c838 RL |
5564 | &calldata->res.seq_res, 0, task)) |
5565 | return; | |
5566 | ||
5567 | rpc_call_start(task); | |
5568 | } | |
5569 | ||
aa5190d0 TM |
5570 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5571 | { | |
5572 | switch(task->tk_status) { | |
5573 | case 0: | |
5574 | case -NFS4ERR_COMPLETE_ALREADY: | |
5575 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
5576 | break; | |
5577 | case -NFS4ERR_DELAY: | |
aa5190d0 | 5578 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
5579 | /* fall through */ |
5580 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
5581 | return -EAGAIN; |
5582 | default: | |
0400a6b0 | 5583 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5584 | } |
5585 | return 0; | |
5586 | } | |
5587 | ||
fce5c838 RL |
5588 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
5589 | { | |
5590 | struct nfs4_reclaim_complete_data *calldata = data; | |
5591 | struct nfs_client *clp = calldata->clp; | |
5592 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
5593 | ||
5594 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5595 | if (!nfs41_sequence_done(task, res)) |
5596 | return; | |
fce5c838 | 5597 | |
aa5190d0 TM |
5598 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
5599 | rpc_restart_call_prepare(task); | |
5600 | return; | |
5601 | } | |
fce5c838 RL |
5602 | dprintk("<-- %s\n", __func__); |
5603 | } | |
5604 | ||
5605 | static void nfs4_free_reclaim_complete_data(void *data) | |
5606 | { | |
5607 | struct nfs4_reclaim_complete_data *calldata = data; | |
5608 | ||
5609 | kfree(calldata); | |
5610 | } | |
5611 | ||
5612 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
5613 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
5614 | .rpc_call_done = nfs4_reclaim_complete_done, | |
5615 | .rpc_release = nfs4_free_reclaim_complete_data, | |
5616 | }; | |
5617 | ||
5618 | /* | |
5619 | * Issue a global reclaim complete. | |
5620 | */ | |
5621 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
5622 | { | |
5623 | struct nfs4_reclaim_complete_data *calldata; | |
5624 | struct rpc_task *task; | |
5625 | struct rpc_message msg = { | |
5626 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
5627 | }; | |
5628 | struct rpc_task_setup task_setup_data = { | |
5629 | .rpc_client = clp->cl_rpcclient, | |
5630 | .rpc_message = &msg, | |
5631 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
5632 | .flags = RPC_TASK_ASYNC, | |
5633 | }; | |
5634 | int status = -ENOMEM; | |
5635 | ||
5636 | dprintk("--> %s\n", __func__); | |
8535b2be | 5637 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
5638 | if (calldata == NULL) |
5639 | goto out; | |
5640 | calldata->clp = clp; | |
5641 | calldata->arg.one_fs = 0; | |
fce5c838 RL |
5642 | |
5643 | msg.rpc_argp = &calldata->arg; | |
5644 | msg.rpc_resp = &calldata->res; | |
5645 | task_setup_data.callback_data = calldata; | |
5646 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 5647 | if (IS_ERR(task)) { |
fce5c838 | 5648 | status = PTR_ERR(task); |
acf82b85 DC |
5649 | goto out; |
5650 | } | |
c34c32ea AA |
5651 | status = nfs4_wait_for_completion_rpc_task(task); |
5652 | if (status == 0) | |
5653 | status = task->tk_status; | |
fce5c838 | 5654 | rpc_put_task(task); |
acf82b85 | 5655 | return 0; |
fce5c838 RL |
5656 | out: |
5657 | dprintk("<-- %s status=%d\n", __func__, status); | |
5658 | return status; | |
5659 | } | |
b1f69b75 AA |
5660 | |
5661 | static void | |
5662 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
5663 | { | |
5664 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 5665 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
b1f69b75 AA |
5666 | |
5667 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
5668 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
5669 | * right now covering the LAYOUTGET we are about to send. | |
5670 | * However, that is not so catastrophic, and there seems | |
5671 | * to be no way to prevent it completely. | |
5672 | */ | |
b1f69b75 AA |
5673 | if (nfs4_setup_sequence(server, &lgp->args.seq_args, |
5674 | &lgp->res.seq_res, 0, task)) | |
5675 | return; | |
cf7d63f1 FI |
5676 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
5677 | NFS_I(lgp->args.inode)->layout, | |
5678 | lgp->args.ctx->state)) { | |
5679 | rpc_exit(task, NFS4_OK); | |
5680 | return; | |
5681 | } | |
b1f69b75 AA |
5682 | rpc_call_start(task); |
5683 | } | |
5684 | ||
5685 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
5686 | { | |
5687 | struct nfs4_layoutget *lgp = calldata; | |
5688 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5689 | ||
5690 | dprintk("--> %s\n", __func__); | |
5691 | ||
5692 | if (!nfs4_sequence_done(task, &lgp->res.seq_res)) | |
5693 | return; | |
5694 | ||
5695 | switch (task->tk_status) { | |
5696 | case 0: | |
5697 | break; | |
5698 | case -NFS4ERR_LAYOUTTRYLATER: | |
5699 | case -NFS4ERR_RECALLCONFLICT: | |
5700 | task->tk_status = -NFS4ERR_DELAY; | |
5701 | /* Fall through */ | |
5702 | default: | |
5703 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
5704 | rpc_restart_call_prepare(task); | |
5705 | return; | |
5706 | } | |
5707 | } | |
b1f69b75 AA |
5708 | dprintk("<-- %s\n", __func__); |
5709 | } | |
5710 | ||
5711 | static void nfs4_layoutget_release(void *calldata) | |
5712 | { | |
5713 | struct nfs4_layoutget *lgp = calldata; | |
5714 | ||
5715 | dprintk("--> %s\n", __func__); | |
b1f69b75 AA |
5716 | put_nfs_open_context(lgp->args.ctx); |
5717 | kfree(calldata); | |
5718 | dprintk("<-- %s\n", __func__); | |
5719 | } | |
5720 | ||
5721 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
5722 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
5723 | .rpc_call_done = nfs4_layoutget_done, | |
5724 | .rpc_release = nfs4_layoutget_release, | |
5725 | }; | |
5726 | ||
5727 | int nfs4_proc_layoutget(struct nfs4_layoutget *lgp) | |
5728 | { | |
5729 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5730 | struct rpc_task *task; | |
5731 | struct rpc_message msg = { | |
5732 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
5733 | .rpc_argp = &lgp->args, | |
5734 | .rpc_resp = &lgp->res, | |
5735 | }; | |
5736 | struct rpc_task_setup task_setup_data = { | |
5737 | .rpc_client = server->client, | |
5738 | .rpc_message = &msg, | |
5739 | .callback_ops = &nfs4_layoutget_call_ops, | |
5740 | .callback_data = lgp, | |
5741 | .flags = RPC_TASK_ASYNC, | |
5742 | }; | |
5743 | int status = 0; | |
5744 | ||
5745 | dprintk("--> %s\n", __func__); | |
5746 | ||
35124a09 | 5747 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 AA |
5748 | lgp->res.seq_res.sr_slot = NULL; |
5749 | task = rpc_run_task(&task_setup_data); | |
5750 | if (IS_ERR(task)) | |
5751 | return PTR_ERR(task); | |
5752 | status = nfs4_wait_for_completion_rpc_task(task); | |
c31663d4 FI |
5753 | if (status == 0) |
5754 | status = task->tk_status; | |
5755 | if (status == 0) | |
5756 | status = pnfs_layout_process(lgp); | |
b1f69b75 AA |
5757 | rpc_put_task(task); |
5758 | dprintk("<-- %s status=%d\n", __func__, status); | |
5759 | return status; | |
5760 | } | |
5761 | ||
cbe82603 BH |
5762 | static void |
5763 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
5764 | { | |
5765 | struct nfs4_layoutreturn *lrp = calldata; | |
5766 | ||
5767 | dprintk("--> %s\n", __func__); | |
5768 | if (nfs41_setup_sequence(lrp->clp->cl_session, &lrp->args.seq_args, | |
5769 | &lrp->res.seq_res, 0, task)) | |
5770 | return; | |
5771 | rpc_call_start(task); | |
5772 | } | |
5773 | ||
5774 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
5775 | { | |
5776 | struct nfs4_layoutreturn *lrp = calldata; | |
5777 | struct nfs_server *server; | |
a56aaa02 | 5778 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
5779 | |
5780 | dprintk("--> %s\n", __func__); | |
5781 | ||
5782 | if (!nfs4_sequence_done(task, &lrp->res.seq_res)) | |
5783 | return; | |
5784 | ||
5785 | server = NFS_SERVER(lrp->args.inode); | |
5786 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 5787 | rpc_restart_call_prepare(task); |
cbe82603 BH |
5788 | return; |
5789 | } | |
a2e1d4f2 | 5790 | spin_lock(&lo->plh_inode->i_lock); |
cbe82603 | 5791 | if (task->tk_status == 0) { |
cbe82603 | 5792 | if (lrp->res.lrs_present) { |
cbe82603 | 5793 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); |
cbe82603 BH |
5794 | } else |
5795 | BUG_ON(!list_empty(&lo->plh_segs)); | |
5796 | } | |
a2e1d4f2 FI |
5797 | lo->plh_block_lgets--; |
5798 | spin_unlock(&lo->plh_inode->i_lock); | |
cbe82603 BH |
5799 | dprintk("<-- %s\n", __func__); |
5800 | } | |
5801 | ||
5802 | static void nfs4_layoutreturn_release(void *calldata) | |
5803 | { | |
5804 | struct nfs4_layoutreturn *lrp = calldata; | |
5805 | ||
5806 | dprintk("--> %s\n", __func__); | |
a56aaa02 | 5807 | put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
5808 | kfree(calldata); |
5809 | dprintk("<-- %s\n", __func__); | |
5810 | } | |
5811 | ||
5812 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
5813 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
5814 | .rpc_call_done = nfs4_layoutreturn_done, | |
5815 | .rpc_release = nfs4_layoutreturn_release, | |
5816 | }; | |
5817 | ||
5818 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
5819 | { | |
5820 | struct rpc_task *task; | |
5821 | struct rpc_message msg = { | |
5822 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
5823 | .rpc_argp = &lrp->args, | |
5824 | .rpc_resp = &lrp->res, | |
5825 | }; | |
5826 | struct rpc_task_setup task_setup_data = { | |
5827 | .rpc_client = lrp->clp->cl_rpcclient, | |
5828 | .rpc_message = &msg, | |
5829 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
5830 | .callback_data = lrp, | |
5831 | }; | |
5832 | int status; | |
5833 | ||
5834 | dprintk("--> %s\n", __func__); | |
5835 | task = rpc_run_task(&task_setup_data); | |
5836 | if (IS_ERR(task)) | |
5837 | return PTR_ERR(task); | |
5838 | status = task->tk_status; | |
5839 | dprintk("<-- %s status=%d\n", __func__, status); | |
5840 | rpc_put_task(task); | |
5841 | return status; | |
5842 | } | |
5843 | ||
7f11d8d3 AA |
5844 | /* |
5845 | * Retrieve the list of Data Server devices from the MDS. | |
5846 | */ | |
5847 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
5848 | const struct nfs_fh *fh, | |
5849 | struct pnfs_devicelist *devlist) | |
5850 | { | |
5851 | struct nfs4_getdevicelist_args args = { | |
5852 | .fh = fh, | |
5853 | .layoutclass = server->pnfs_curr_ld->id, | |
5854 | }; | |
5855 | struct nfs4_getdevicelist_res res = { | |
5856 | .devlist = devlist, | |
5857 | }; | |
5858 | struct rpc_message msg = { | |
5859 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
5860 | .rpc_argp = &args, | |
5861 | .rpc_resp = &res, | |
5862 | }; | |
5863 | int status; | |
5864 | ||
5865 | dprintk("--> %s\n", __func__); | |
5866 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
5867 | &res.seq_res, 0); | |
5868 | dprintk("<-- %s status=%d\n", __func__, status); | |
5869 | return status; | |
5870 | } | |
5871 | ||
5872 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
5873 | const struct nfs_fh *fh, | |
5874 | struct pnfs_devicelist *devlist) | |
5875 | { | |
5876 | struct nfs4_exception exception = { }; | |
5877 | int err; | |
5878 | ||
5879 | do { | |
5880 | err = nfs4_handle_exception(server, | |
5881 | _nfs4_getdevicelist(server, fh, devlist), | |
5882 | &exception); | |
5883 | } while (exception.retry); | |
5884 | ||
5885 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
5886 | err, devlist->num_devs); | |
5887 | ||
5888 | return err; | |
5889 | } | |
5890 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
5891 | ||
b1f69b75 AA |
5892 | static int |
5893 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
5894 | { | |
5895 | struct nfs4_getdeviceinfo_args args = { | |
5896 | .pdev = pdev, | |
5897 | }; | |
5898 | struct nfs4_getdeviceinfo_res res = { | |
5899 | .pdev = pdev, | |
5900 | }; | |
5901 | struct rpc_message msg = { | |
5902 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
5903 | .rpc_argp = &args, | |
5904 | .rpc_resp = &res, | |
5905 | }; | |
5906 | int status; | |
5907 | ||
5908 | dprintk("--> %s\n", __func__); | |
7c513058 | 5909 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
5910 | dprintk("<-- %s status=%d\n", __func__, status); |
5911 | ||
5912 | return status; | |
5913 | } | |
5914 | ||
5915 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
5916 | { | |
5917 | struct nfs4_exception exception = { }; | |
5918 | int err; | |
5919 | ||
5920 | do { | |
5921 | err = nfs4_handle_exception(server, | |
5922 | _nfs4_proc_getdeviceinfo(server, pdev), | |
5923 | &exception); | |
5924 | } while (exception.retry); | |
5925 | return err; | |
5926 | } | |
5927 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
5928 | ||
863a3c6c AA |
5929 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
5930 | { | |
5931 | struct nfs4_layoutcommit_data *data = calldata; | |
5932 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
5933 | ||
5934 | if (nfs4_setup_sequence(server, &data->args.seq_args, | |
5935 | &data->res.seq_res, 1, task)) | |
5936 | return; | |
5937 | rpc_call_start(task); | |
5938 | } | |
5939 | ||
5940 | static void | |
5941 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
5942 | { | |
5943 | struct nfs4_layoutcommit_data *data = calldata; | |
5944 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
5945 | ||
5946 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
5947 | return; | |
5948 | ||
5949 | switch (task->tk_status) { /* Just ignore these failures */ | |
5950 | case NFS4ERR_DELEG_REVOKED: /* layout was recalled */ | |
5951 | case NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
5952 | case NFS4ERR_BADLAYOUT: /* no layout */ | |
5953 | case NFS4ERR_GRACE: /* loca_recalim always false */ | |
5954 | task->tk_status = 0; | |
5955 | } | |
5956 | ||
5957 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 5958 | rpc_restart_call_prepare(task); |
863a3c6c AA |
5959 | return; |
5960 | } | |
5961 | ||
5962 | if (task->tk_status == 0) | |
5963 | nfs_post_op_update_inode_force_wcc(data->args.inode, | |
5964 | data->res.fattr); | |
5965 | } | |
5966 | ||
5967 | static void nfs4_layoutcommit_release(void *calldata) | |
5968 | { | |
5969 | struct nfs4_layoutcommit_data *data = calldata; | |
a9bae566 | 5970 | struct pnfs_layout_segment *lseg, *tmp; |
92407e75 | 5971 | unsigned long *bitlock = &NFS_I(data->args.inode)->flags; |
863a3c6c | 5972 | |
db29c089 | 5973 | pnfs_cleanup_layoutcommit(data); |
863a3c6c | 5974 | /* Matched by references in pnfs_set_layoutcommit */ |
a9bae566 PT |
5975 | list_for_each_entry_safe(lseg, tmp, &data->lseg_list, pls_lc_list) { |
5976 | list_del_init(&lseg->pls_lc_list); | |
5977 | if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT, | |
5978 | &lseg->pls_flags)) | |
5979 | put_lseg(lseg); | |
5980 | } | |
92407e75 PT |
5981 | |
5982 | clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING, bitlock); | |
5983 | smp_mb__after_clear_bit(); | |
5984 | wake_up_bit(bitlock, NFS_INO_LAYOUTCOMMITTING); | |
5985 | ||
863a3c6c AA |
5986 | put_rpccred(data->cred); |
5987 | kfree(data); | |
5988 | } | |
5989 | ||
5990 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
5991 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
5992 | .rpc_call_done = nfs4_layoutcommit_done, | |
5993 | .rpc_release = nfs4_layoutcommit_release, | |
5994 | }; | |
5995 | ||
5996 | int | |
ef311537 | 5997 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
5998 | { |
5999 | struct rpc_message msg = { | |
6000 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
6001 | .rpc_argp = &data->args, | |
6002 | .rpc_resp = &data->res, | |
6003 | .rpc_cred = data->cred, | |
6004 | }; | |
6005 | struct rpc_task_setup task_setup_data = { | |
6006 | .task = &data->task, | |
6007 | .rpc_client = NFS_CLIENT(data->args.inode), | |
6008 | .rpc_message = &msg, | |
6009 | .callback_ops = &nfs4_layoutcommit_ops, | |
6010 | .callback_data = data, | |
6011 | .flags = RPC_TASK_ASYNC, | |
6012 | }; | |
6013 | struct rpc_task *task; | |
6014 | int status = 0; | |
6015 | ||
6016 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
6017 | "lbw: %llu inode %lu\n", | |
6018 | data->task.tk_pid, sync, | |
6019 | data->args.lastbytewritten, | |
6020 | data->args.inode->i_ino); | |
6021 | ||
6022 | task = rpc_run_task(&task_setup_data); | |
6023 | if (IS_ERR(task)) | |
6024 | return PTR_ERR(task); | |
ef311537 | 6025 | if (sync == false) |
863a3c6c AA |
6026 | goto out; |
6027 | status = nfs4_wait_for_completion_rpc_task(task); | |
6028 | if (status != 0) | |
6029 | goto out; | |
6030 | status = task->tk_status; | |
6031 | out: | |
6032 | dprintk("%s: status %d\n", __func__, status); | |
6033 | rpc_put_task(task); | |
6034 | return status; | |
6035 | } | |
fca78d6d BS |
6036 | |
6037 | static int | |
6038 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6039 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6040 | { | |
6041 | struct nfs41_secinfo_no_name_args args = { | |
6042 | .style = SECINFO_STYLE_CURRENT_FH, | |
6043 | }; | |
6044 | struct nfs4_secinfo_res res = { | |
6045 | .flavors = flavors, | |
6046 | }; | |
6047 | struct rpc_message msg = { | |
6048 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
6049 | .rpc_argp = &args, | |
6050 | .rpc_resp = &res, | |
6051 | }; | |
6052 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); | |
6053 | } | |
6054 | ||
6055 | static int | |
6056 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6057 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6058 | { | |
6059 | struct nfs4_exception exception = { }; | |
6060 | int err; | |
6061 | do { | |
6062 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6063 | switch (err) { | |
6064 | case 0: | |
6065 | case -NFS4ERR_WRONGSEC: | |
6066 | case -NFS4ERR_NOTSUPP: | |
6067 | break; | |
6068 | default: | |
6069 | err = nfs4_handle_exception(server, err, &exception); | |
6070 | } | |
6071 | } while (exception.retry); | |
6072 | return err; | |
6073 | } | |
6074 | ||
6075 | static int | |
6076 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
6077 | struct nfs_fsinfo *info) | |
6078 | { | |
6079 | int err; | |
6080 | struct page *page; | |
6081 | rpc_authflavor_t flavor; | |
6082 | struct nfs4_secinfo_flavors *flavors; | |
6083 | ||
6084 | page = alloc_page(GFP_KERNEL); | |
6085 | if (!page) { | |
6086 | err = -ENOMEM; | |
6087 | goto out; | |
6088 | } | |
6089 | ||
6090 | flavors = page_address(page); | |
6091 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6092 | ||
6093 | /* | |
6094 | * Fall back on "guess and check" method if | |
6095 | * the server doesn't support SECINFO_NO_NAME | |
6096 | */ | |
6097 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
6098 | err = nfs4_find_root_sec(server, fhandle, info); | |
6099 | goto out_freepage; | |
6100 | } | |
6101 | if (err) | |
6102 | goto out_freepage; | |
6103 | ||
6104 | flavor = nfs_find_best_sec(flavors); | |
6105 | if (err == 0) | |
6106 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
6107 | ||
6108 | out_freepage: | |
6109 | put_page(page); | |
6110 | if (err == -EACCES) | |
6111 | return -EPERM; | |
6112 | out: | |
6113 | return err; | |
6114 | } | |
7d974794 BS |
6115 | static int _nfs41_test_stateid(struct nfs_server *server, struct nfs4_state *state) |
6116 | { | |
6117 | int status; | |
6118 | struct nfs41_test_stateid_args args = { | |
6119 | .stateid = &state->stateid, | |
6120 | }; | |
6121 | struct nfs41_test_stateid_res res; | |
6122 | struct rpc_message msg = { | |
6123 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
6124 | .rpc_argp = &args, | |
6125 | .rpc_resp = &res, | |
6126 | }; | |
6127 | args.seq_args.sa_session = res.seq_res.sr_session = NULL; | |
6128 | status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 0, 1); | |
6129 | return status; | |
6130 | } | |
6131 | ||
6132 | static int nfs41_test_stateid(struct nfs_server *server, struct nfs4_state *state) | |
6133 | { | |
6134 | struct nfs4_exception exception = { }; | |
6135 | int err; | |
6136 | do { | |
6137 | err = nfs4_handle_exception(server, | |
6138 | _nfs41_test_stateid(server, state), | |
6139 | &exception); | |
6140 | } while (exception.retry); | |
6141 | return err; | |
6142 | } | |
9aeda35f BS |
6143 | |
6144 | static int _nfs4_free_stateid(struct nfs_server *server, struct nfs4_state *state) | |
6145 | { | |
6146 | int status; | |
6147 | struct nfs41_free_stateid_args args = { | |
6148 | .stateid = &state->stateid, | |
6149 | }; | |
6150 | struct nfs41_free_stateid_res res; | |
6151 | struct rpc_message msg = { | |
6152 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
6153 | .rpc_argp = &args, | |
6154 | .rpc_resp = &res, | |
6155 | }; | |
6156 | ||
6157 | args.seq_args.sa_session = res.seq_res.sr_session = NULL; | |
6158 | status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 0, 1); | |
6159 | return status; | |
6160 | } | |
6161 | ||
6162 | static int nfs41_free_stateid(struct nfs_server *server, struct nfs4_state *state) | |
6163 | { | |
6164 | struct nfs4_exception exception = { }; | |
6165 | int err; | |
6166 | do { | |
6167 | err = nfs4_handle_exception(server, | |
6168 | _nfs4_free_stateid(server, state), | |
6169 | &exception); | |
6170 | } while (exception.retry); | |
6171 | return err; | |
6172 | } | |
557134a3 AA |
6173 | #endif /* CONFIG_NFS_V4_1 */ |
6174 | ||
591d71cb | 6175 | struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 6176 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 6177 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
6178 | .recover_open = nfs4_open_reclaim, |
6179 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 6180 | .establish_clid = nfs4_init_clientid, |
90a16617 | 6181 | .get_clid_cred = nfs4_get_setclientid_cred, |
1da177e4 LT |
6182 | }; |
6183 | ||
591d71cb AA |
6184 | #if defined(CONFIG_NFS_V4_1) |
6185 | struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { | |
6186 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, | |
6187 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
6188 | .recover_open = nfs4_open_reclaim, | |
6189 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 6190 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6191 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 6192 | .reclaim_complete = nfs41_proc_reclaim_complete, |
591d71cb AA |
6193 | }; |
6194 | #endif /* CONFIG_NFS_V4_1 */ | |
6195 | ||
6196 | struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { | |
6197 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, | |
6198 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
6199 | .recover_open = nfs4_open_expired, | |
6200 | .recover_lock = nfs4_lock_expired, | |
6201 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 6202 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
6203 | }; |
6204 | ||
6205 | #if defined(CONFIG_NFS_V4_1) | |
6206 | struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { | |
7eff03ae | 6207 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 6208 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
6209 | .recover_open = nfs41_open_expired, |
6210 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 6211 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6212 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 6213 | }; |
591d71cb | 6214 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 6215 | |
29fba38b BH |
6216 | struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
6217 | .sched_state_renewal = nfs4_proc_async_renew, | |
a7b72103 | 6218 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 6219 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
6220 | }; |
6221 | ||
6222 | #if defined(CONFIG_NFS_V4_1) | |
6223 | struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { | |
6224 | .sched_state_renewal = nfs41_proc_async_sequence, | |
a7b72103 | 6225 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 6226 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
6227 | }; |
6228 | #endif | |
6229 | ||
97dc1359 TM |
6230 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
6231 | .minor_version = 0, | |
6232 | .call_sync = _nfs4_call_sync, | |
e047a10c | 6233 | .validate_stateid = nfs4_validate_delegation_stateid, |
fca78d6d | 6234 | .find_root_sec = nfs4_find_root_sec, |
c48f4f35 TM |
6235 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
6236 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
6237 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
6238 | }; |
6239 | ||
6240 | #if defined(CONFIG_NFS_V4_1) | |
6241 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
6242 | .minor_version = 1, | |
6243 | .call_sync = _nfs4_call_sync_session, | |
e047a10c | 6244 | .validate_stateid = nfs41_validate_delegation_stateid, |
fca78d6d | 6245 | .find_root_sec = nfs41_find_root_sec, |
c48f4f35 TM |
6246 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
6247 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
6248 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
6249 | }; |
6250 | #endif | |
6251 | ||
97dc1359 TM |
6252 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
6253 | [0] = &nfs_v4_0_minor_ops, | |
6254 | #if defined(CONFIG_NFS_V4_1) | |
6255 | [1] = &nfs_v4_1_minor_ops, | |
6256 | #endif | |
6257 | }; | |
6258 | ||
92e1d5be | 6259 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
6260 | .permission = nfs_permission, |
6261 | .getattr = nfs_getattr, | |
6262 | .setattr = nfs_setattr, | |
64c2ce8b AK |
6263 | .getxattr = generic_getxattr, |
6264 | .setxattr = generic_setxattr, | |
6265 | .listxattr = generic_listxattr, | |
6266 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
6267 | }; |
6268 | ||
509de811 | 6269 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
6270 | .version = 4, /* protocol version */ |
6271 | .dentry_ops = &nfs4_dentry_operations, | |
6272 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 6273 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 6274 | .file_ops = &nfs4_file_operations, |
1da177e4 LT |
6275 | .getroot = nfs4_proc_get_root, |
6276 | .getattr = nfs4_proc_getattr, | |
6277 | .setattr = nfs4_proc_setattr, | |
6278 | .lookup = nfs4_proc_lookup, | |
6279 | .access = nfs4_proc_access, | |
6280 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
6281 | .create = nfs4_proc_create, |
6282 | .remove = nfs4_proc_remove, | |
6283 | .unlink_setup = nfs4_proc_unlink_setup, | |
6284 | .unlink_done = nfs4_proc_unlink_done, | |
6285 | .rename = nfs4_proc_rename, | |
d3d4152a JL |
6286 | .rename_setup = nfs4_proc_rename_setup, |
6287 | .rename_done = nfs4_proc_rename_done, | |
1da177e4 LT |
6288 | .link = nfs4_proc_link, |
6289 | .symlink = nfs4_proc_symlink, | |
6290 | .mkdir = nfs4_proc_mkdir, | |
6291 | .rmdir = nfs4_proc_remove, | |
6292 | .readdir = nfs4_proc_readdir, | |
6293 | .mknod = nfs4_proc_mknod, | |
6294 | .statfs = nfs4_proc_statfs, | |
6295 | .fsinfo = nfs4_proc_fsinfo, | |
6296 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 6297 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
6298 | .decode_dirent = nfs4_decode_dirent, |
6299 | .read_setup = nfs4_proc_read_setup, | |
ec06c096 | 6300 | .read_done = nfs4_read_done, |
1da177e4 | 6301 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 6302 | .write_done = nfs4_write_done, |
1da177e4 | 6303 | .commit_setup = nfs4_proc_commit_setup, |
788e7a89 | 6304 | .commit_done = nfs4_commit_done, |
1da177e4 | 6305 | .lock = nfs4_proc_lock, |
e50a1c2e | 6306 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 6307 | .close_context = nfs4_close_context, |
2b484297 | 6308 | .open_context = nfs4_atomic_open, |
45a52a02 | 6309 | .init_client = nfs4_init_client, |
5a5ea0d4 | 6310 | .secinfo = nfs4_proc_secinfo, |
1da177e4 LT |
6311 | }; |
6312 | ||
64c2ce8b AK |
6313 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
6314 | .prefix = XATTR_NAME_NFSV4_ACL, | |
6315 | .list = nfs4_xattr_list_nfs4_acl, | |
6316 | .get = nfs4_xattr_get_nfs4_acl, | |
6317 | .set = nfs4_xattr_set_nfs4_acl, | |
6318 | }; | |
6319 | ||
6320 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
6321 | &nfs4_xattr_nfs4_acl_handler, | |
6322 | NULL | |
6323 | }; | |
6324 | ||
1da177e4 LT |
6325 | /* |
6326 | * Local variables: | |
6327 | * c-basic-offset: 8 | |
6328 | * End: | |
6329 | */ |