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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 | ||
ef159e91 TM |
75 | static unsigned short max_session_slots = NFS4_DEF_SLOT_TABLE_SIZE; |
76 | ||
cdd4e68b | 77 | struct nfs4_opendata; |
864472e9 | 78 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
b257957e | 79 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data); |
1da177e4 | 80 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
9e33bed5 | 81 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *); |
81934ddb | 82 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); |
9936781d | 83 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr); |
0ab64e0e TM |
84 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
85 | struct nfs_fattr *fattr, struct iattr *sattr, | |
86 | struct nfs4_state *state); | |
f062eb6c | 87 | #ifdef CONFIG_NFS_V4_1 |
1cab0652 BS |
88 | static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *); |
89 | static int nfs41_free_stateid(struct nfs_server *, nfs4_stateid *); | |
f062eb6c | 90 | #endif |
1da177e4 | 91 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 92 | static int nfs4_map_errors(int err) |
1da177e4 | 93 | { |
52567b03 TM |
94 | if (err >= -1000) |
95 | return err; | |
96 | switch (err) { | |
97 | case -NFS4ERR_RESOURCE: | |
98 | return -EREMOTEIO; | |
7ebb9315 BS |
99 | case -NFS4ERR_WRONGSEC: |
100 | return -EPERM; | |
3ddeb7c5 TM |
101 | case -NFS4ERR_BADOWNER: |
102 | case -NFS4ERR_BADNAME: | |
103 | return -EINVAL; | |
52567b03 | 104 | default: |
1da177e4 | 105 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 106 | __func__, -err); |
52567b03 | 107 | break; |
1da177e4 | 108 | } |
52567b03 | 109 | return -EIO; |
1da177e4 LT |
110 | } |
111 | ||
112 | /* | |
113 | * This is our standard bitmap for GETATTR requests. | |
114 | */ | |
115 | const u32 nfs4_fattr_bitmap[2] = { | |
116 | FATTR4_WORD0_TYPE | |
117 | | FATTR4_WORD0_CHANGE | |
118 | | FATTR4_WORD0_SIZE | |
119 | | FATTR4_WORD0_FSID | |
120 | | FATTR4_WORD0_FILEID, | |
121 | FATTR4_WORD1_MODE | |
122 | | FATTR4_WORD1_NUMLINKS | |
123 | | FATTR4_WORD1_OWNER | |
124 | | FATTR4_WORD1_OWNER_GROUP | |
125 | | FATTR4_WORD1_RAWDEV | |
126 | | FATTR4_WORD1_SPACE_USED | |
127 | | FATTR4_WORD1_TIME_ACCESS | |
128 | | FATTR4_WORD1_TIME_METADATA | |
129 | | FATTR4_WORD1_TIME_MODIFY | |
130 | }; | |
131 | ||
132 | const u32 nfs4_statfs_bitmap[2] = { | |
133 | FATTR4_WORD0_FILES_AVAIL | |
134 | | FATTR4_WORD0_FILES_FREE | |
135 | | FATTR4_WORD0_FILES_TOTAL, | |
136 | FATTR4_WORD1_SPACE_AVAIL | |
137 | | FATTR4_WORD1_SPACE_FREE | |
138 | | FATTR4_WORD1_SPACE_TOTAL | |
139 | }; | |
140 | ||
4ce79717 | 141 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
142 | FATTR4_WORD0_MAXLINK |
143 | | FATTR4_WORD0_MAXNAME, | |
144 | 0 | |
145 | }; | |
146 | ||
dae100c2 | 147 | const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE |
1da177e4 LT |
148 | | FATTR4_WORD0_MAXREAD |
149 | | FATTR4_WORD0_MAXWRITE | |
150 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 151 | FATTR4_WORD1_TIME_DELTA |
dae100c2 FI |
152 | | FATTR4_WORD1_FS_LAYOUT_TYPES, |
153 | FATTR4_WORD2_LAYOUT_BLKSIZE | |
1da177e4 LT |
154 | }; |
155 | ||
830b8e33 MN |
156 | const u32 nfs4_fs_locations_bitmap[2] = { |
157 | FATTR4_WORD0_TYPE | |
158 | | FATTR4_WORD0_CHANGE | |
159 | | FATTR4_WORD0_SIZE | |
160 | | FATTR4_WORD0_FSID | |
161 | | FATTR4_WORD0_FILEID | |
162 | | FATTR4_WORD0_FS_LOCATIONS, | |
163 | FATTR4_WORD1_MODE | |
164 | | FATTR4_WORD1_NUMLINKS | |
165 | | FATTR4_WORD1_OWNER | |
166 | | FATTR4_WORD1_OWNER_GROUP | |
167 | | FATTR4_WORD1_RAWDEV | |
168 | | FATTR4_WORD1_SPACE_USED | |
169 | | FATTR4_WORD1_TIME_ACCESS | |
170 | | FATTR4_WORD1_TIME_METADATA | |
171 | | FATTR4_WORD1_TIME_MODIFY | |
172 | | FATTR4_WORD1_MOUNTED_ON_FILEID | |
173 | }; | |
174 | ||
bc4785cd | 175 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
176 | struct nfs4_readdir_arg *readdir) |
177 | { | |
0dbb4c67 | 178 | __be32 *start, *p; |
1da177e4 LT |
179 | |
180 | BUG_ON(readdir->count < 80); | |
181 | if (cookie > 2) { | |
b7ef1956 | 182 | readdir->cookie = cookie; |
1da177e4 LT |
183 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
184 | return; | |
185 | } | |
186 | ||
187 | readdir->cookie = 0; | |
188 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
189 | if (cookie == 2) | |
190 | return; | |
191 | ||
192 | /* | |
193 | * NFSv4 servers do not return entries for '.' and '..' | |
194 | * Therefore, we fake these entries here. We let '.' | |
195 | * have cookie 0 and '..' have cookie 1. Note that | |
196 | * when talking to the server, we always send cookie 0 | |
197 | * instead of 1 or 2. | |
198 | */ | |
2b86ce2d | 199 | start = p = kmap_atomic(*readdir->pages); |
1da177e4 LT |
200 | |
201 | if (cookie == 0) { | |
202 | *p++ = xdr_one; /* next */ | |
203 | *p++ = xdr_zero; /* cookie, first word */ | |
204 | *p++ = xdr_one; /* cookie, second word */ | |
205 | *p++ = xdr_one; /* entry len */ | |
206 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
207 | p++; | |
208 | *p++ = xdr_one; /* bitmap length */ | |
209 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
210 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 211 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
212 | } |
213 | ||
214 | *p++ = xdr_one; /* next */ | |
215 | *p++ = xdr_zero; /* cookie, first word */ | |
216 | *p++ = xdr_two; /* cookie, second word */ | |
217 | *p++ = xdr_two; /* entry len */ | |
218 | memcpy(p, "..\0\0", 4); /* entry */ | |
219 | p++; | |
220 | *p++ = xdr_one; /* bitmap length */ | |
221 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
222 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 223 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
224 | |
225 | readdir->pgbase = (char *)p - (char *)start; | |
226 | readdir->count -= readdir->pgbase; | |
2b86ce2d | 227 | kunmap_atomic(start); |
1da177e4 LT |
228 | } |
229 | ||
65de872e TM |
230 | static int nfs4_wait_clnt_recover(struct nfs_client *clp) |
231 | { | |
232 | int res; | |
233 | ||
234 | might_sleep(); | |
235 | ||
e005e804 | 236 | res = wait_on_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING, |
72cb77f4 | 237 | nfs_wait_bit_killable, TASK_KILLABLE); |
65de872e TM |
238 | return res; |
239 | } | |
240 | ||
241 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) | |
242 | { | |
243 | int res = 0; | |
244 | ||
245 | might_sleep(); | |
246 | ||
247 | if (*timeout <= 0) | |
248 | *timeout = NFS4_POLL_RETRY_MIN; | |
249 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
250 | *timeout = NFS4_POLL_RETRY_MAX; | |
d310310c | 251 | freezable_schedule_timeout_killable(*timeout); |
65de872e TM |
252 | if (fatal_signal_pending(current)) |
253 | res = -ERESTARTSYS; | |
254 | *timeout <<= 1; | |
255 | return res; | |
256 | } | |
257 | ||
258 | /* This is the error handling routine for processes that are allowed | |
259 | * to sleep. | |
260 | */ | |
b064eca2 | 261 | static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
65de872e TM |
262 | { |
263 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 264 | struct nfs4_state *state = exception->state; |
3114ea7a | 265 | struct inode *inode = exception->inode; |
65de872e TM |
266 | int ret = errorcode; |
267 | ||
268 | exception->retry = 0; | |
269 | switch(errorcode) { | |
270 | case 0: | |
271 | return 0; | |
3114ea7a | 272 | case -NFS4ERR_OPENMODE: |
14977489 | 273 | if (inode && nfs_have_delegation(inode, FMODE_READ)) { |
3114ea7a TM |
274 | nfs_inode_return_delegation(inode); |
275 | exception->retry = 1; | |
276 | return 0; | |
277 | } | |
278 | if (state == NULL) | |
279 | break; | |
280 | nfs4_schedule_stateid_recovery(server, state); | |
281 | goto wait_on_recovery; | |
a1d0b5ee | 282 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
283 | case -NFS4ERR_ADMIN_REVOKED: |
284 | case -NFS4ERR_BAD_STATEID: | |
9e33bed5 TM |
285 | if (state == NULL) |
286 | break; | |
14977489 | 287 | nfs_remove_bad_delegation(state->inode); |
0400a6b0 TM |
288 | nfs4_schedule_stateid_recovery(server, state); |
289 | goto wait_on_recovery; | |
0ced63d1 TM |
290 | case -NFS4ERR_EXPIRED: |
291 | if (state != NULL) | |
292 | nfs4_schedule_stateid_recovery(server, state); | |
65de872e | 293 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 294 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
295 | nfs4_schedule_lease_recovery(clp); |
296 | goto wait_on_recovery; | |
03391693 | 297 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
298 | case -NFS4ERR_BADSESSION: |
299 | case -NFS4ERR_BADSLOT: | |
300 | case -NFS4ERR_BAD_HIGH_SLOT: | |
301 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
302 | case -NFS4ERR_DEADSESSION: | |
303 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
304 | case -NFS4ERR_SEQ_MISORDERED: | |
305 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
306 | errorcode); | |
0400a6b0 | 307 | nfs4_schedule_session_recovery(clp->cl_session); |
4745e315 | 308 | exception->retry = 1; |
b9179237 | 309 | break; |
03391693 | 310 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 311 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
312 | if (exception->timeout > HZ) { |
313 | /* We have retried a decent amount, time to | |
314 | * fail | |
315 | */ | |
316 | ret = -EBUSY; | |
317 | break; | |
318 | } | |
65de872e TM |
319 | case -NFS4ERR_GRACE: |
320 | case -NFS4ERR_DELAY: | |
2c643488 | 321 | case -EKEYEXPIRED: |
65de872e TM |
322 | ret = nfs4_delay(server->client, &exception->timeout); |
323 | if (ret != 0) | |
324 | break; | |
a8a4ae3a | 325 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
326 | case -NFS4ERR_OLD_STATEID: |
327 | exception->retry = 1; | |
b064eca2 TM |
328 | break; |
329 | case -NFS4ERR_BADOWNER: | |
330 | /* The following works around a Linux server bug! */ | |
331 | case -NFS4ERR_BADNAME: | |
332 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
333 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
334 | exception->retry = 1; | |
335 | printk(KERN_WARNING "NFS: v4 server %s " | |
336 | "does not accept raw " | |
337 | "uid/gids. " | |
338 | "Reenabling the idmapper.\n", | |
339 | server->nfs_client->cl_hostname); | |
340 | } | |
65de872e TM |
341 | } |
342 | /* We failed to handle the error */ | |
343 | return nfs4_map_errors(ret); | |
0400a6b0 | 344 | wait_on_recovery: |
a2c0b9e2 TM |
345 | ret = nfs4_wait_clnt_recover(clp); |
346 | if (ret == 0) | |
347 | exception->retry = 1; | |
348 | return ret; | |
65de872e TM |
349 | } |
350 | ||
351 | ||
452e9352 | 352 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 353 | { |
1da177e4 LT |
354 | spin_lock(&clp->cl_lock); |
355 | if (time_before(clp->cl_last_renewal,timestamp)) | |
356 | clp->cl_last_renewal = timestamp; | |
357 | spin_unlock(&clp->cl_lock); | |
358 | } | |
359 | ||
452e9352 TM |
360 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
361 | { | |
362 | do_renew_lease(server->nfs_client, timestamp); | |
363 | } | |
364 | ||
cccef3b9 AA |
365 | #if defined(CONFIG_NFS_V4_1) |
366 | ||
e2c4ab3c AA |
367 | /* |
368 | * nfs4_free_slot - free a slot and efficiently update slot table. | |
369 | * | |
370 | * freeing a slot is trivially done by clearing its respective bit | |
371 | * in the bitmap. | |
372 | * If the freed slotid equals highest_used_slotid we want to update it | |
373 | * so that the server would be able to size down the slot table if needed, | |
374 | * otherwise we know that the highest_used_slotid is still in use. | |
375 | * When updating highest_used_slotid there may be "holes" in the bitmap | |
376 | * so we need to scan down from highest_used_slotid to 0 looking for the now | |
377 | * highest slotid in use. | |
45d43c29 | 378 | * If none found, highest_used_slotid is set to NFS4_NO_SLOT. |
35dc1d74 TM |
379 | * |
380 | * Must be called while holding tbl->slot_tbl_lock | |
e2c4ab3c AA |
381 | */ |
382 | static void | |
45d43c29 | 383 | nfs4_free_slot(struct nfs4_slot_table *tbl, u32 slotid) |
e2c4ab3c | 384 | { |
45d43c29 | 385 | BUG_ON(slotid >= NFS4_MAX_SLOT_TABLE); |
e2c4ab3c AA |
386 | /* clear used bit in bitmap */ |
387 | __clear_bit(slotid, tbl->used_slots); | |
388 | ||
389 | /* update highest_used_slotid when it is freed */ | |
390 | if (slotid == tbl->highest_used_slotid) { | |
391 | slotid = find_last_bit(tbl->used_slots, tbl->max_slots); | |
bcb56164 | 392 | if (slotid < tbl->max_slots) |
e2c4ab3c AA |
393 | tbl->highest_used_slotid = slotid; |
394 | else | |
45d43c29 | 395 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
e2c4ab3c | 396 | } |
45d43c29 TM |
397 | dprintk("%s: slotid %u highest_used_slotid %d\n", __func__, |
398 | slotid, tbl->highest_used_slotid); | |
e2c4ab3c AA |
399 | } |
400 | ||
961a828d TM |
401 | bool nfs4_set_task_privileged(struct rpc_task *task, void *dummy) |
402 | { | |
403 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
404 | return true; | |
e2c4ab3c AA |
405 | } |
406 | ||
3bfb0fc5 | 407 | /* |
42acd021 | 408 | * Signal state manager thread if session fore channel is drained |
3bfb0fc5 | 409 | */ |
42acd021 | 410 | static void nfs4_check_drain_fc_complete(struct nfs4_session *ses) |
3bfb0fc5 | 411 | { |
a2118c33 | 412 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state)) { |
961a828d TM |
413 | rpc_wake_up_first(&ses->fc_slot_table.slot_tbl_waitq, |
414 | nfs4_set_task_privileged, NULL); | |
3bfb0fc5 AB |
415 | return; |
416 | } | |
417 | ||
45d43c29 | 418 | if (ses->fc_slot_table.highest_used_slotid != NFS4_NO_SLOT) |
3bfb0fc5 AB |
419 | return; |
420 | ||
42acd021 AA |
421 | dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__); |
422 | complete(&ses->fc_slot_table.complete); | |
423 | } | |
424 | ||
425 | /* | |
426 | * Signal state manager thread if session back channel is drained | |
427 | */ | |
428 | void nfs4_check_drain_bc_complete(struct nfs4_session *ses) | |
429 | { | |
430 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state) || | |
45d43c29 | 431 | ses->bc_slot_table.highest_used_slotid != NFS4_NO_SLOT) |
42acd021 AA |
432 | return; |
433 | dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__); | |
434 | complete(&ses->bc_slot_table.complete); | |
3bfb0fc5 AB |
435 | } |
436 | ||
d185a334 | 437 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 AA |
438 | { |
439 | struct nfs4_slot_table *tbl; | |
440 | ||
d185a334 | 441 | tbl = &res->sr_session->fc_slot_table; |
dfb4f309 | 442 | if (!res->sr_slot) { |
13615871 AA |
443 | /* just wake up the next guy waiting since |
444 | * we may have not consumed a slot after all */ | |
691daf3b | 445 | dprintk("%s: No slot\n", __func__); |
35dc1d74 | 446 | return; |
13615871 | 447 | } |
ea028ac9 | 448 | |
35dc1d74 | 449 | spin_lock(&tbl->slot_tbl_lock); |
aabd0b40 | 450 | nfs4_free_slot(tbl, res->sr_slot - tbl->slots); |
42acd021 | 451 | nfs4_check_drain_fc_complete(res->sr_session); |
35dc1d74 | 452 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 453 | res->sr_slot = NULL; |
13615871 AA |
454 | } |
455 | ||
14516c3a | 456 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c AA |
457 | { |
458 | unsigned long timestamp; | |
14516c3a | 459 | struct nfs_client *clp; |
b0df806c AA |
460 | |
461 | /* | |
462 | * sr_status remains 1 if an RPC level error occurred. The server | |
463 | * may or may not have processed the sequence operation.. | |
464 | * Proceed as if the server received and processed the sequence | |
465 | * operation. | |
466 | */ | |
467 | if (res->sr_status == 1) | |
468 | res->sr_status = NFS_OK; | |
469 | ||
468f8613 BS |
470 | /* don't increment the sequence number if the task wasn't sent */ |
471 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
472 | goto out; |
473 | ||
691daf3b | 474 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
475 | switch (res->sr_status) { |
476 | case 0: | |
b0df806c | 477 | /* Update the slot's sequence and clientid lease timer */ |
dfb4f309 | 478 | ++res->sr_slot->seq_nr; |
b0df806c | 479 | timestamp = res->sr_renewal_time; |
14516c3a | 480 | clp = res->sr_session->clp; |
452e9352 | 481 | do_renew_lease(clp, timestamp); |
0629e370 | 482 | /* Check sequence flags */ |
b4410c2f TM |
483 | if (res->sr_status_flags != 0) |
484 | nfs4_schedule_lease_recovery(clp); | |
14516c3a TM |
485 | break; |
486 | case -NFS4ERR_DELAY: | |
487 | /* The server detected a resend of the RPC call and | |
488 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
489 | * of RFC5661. | |
490 | */ | |
12364a4f | 491 | dprintk("%s: slot=%td seq=%d: Operation in progress\n", |
dfb4f309 BH |
492 | __func__, |
493 | res->sr_slot - res->sr_session->fc_slot_table.slots, | |
494 | res->sr_slot->seq_nr); | |
14516c3a TM |
495 | goto out_retry; |
496 | default: | |
497 | /* Just update the slot sequence no. */ | |
dfb4f309 | 498 | ++res->sr_slot->seq_nr; |
b0df806c AA |
499 | } |
500 | out: | |
501 | /* The session may be reset by one of the error handlers. */ | |
502 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 503 | nfs41_sequence_free_slot(res); |
14516c3a TM |
504 | return 1; |
505 | out_retry: | |
d05dd4e9 | 506 | if (!rpc_restart_call(task)) |
14516c3a TM |
507 | goto out; |
508 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
509 | return 0; | |
b0df806c AA |
510 | } |
511 | ||
14516c3a TM |
512 | static int nfs4_sequence_done(struct rpc_task *task, |
513 | struct nfs4_sequence_res *res) | |
df896455 | 514 | { |
14516c3a TM |
515 | if (res->sr_session == NULL) |
516 | return 1; | |
517 | return nfs41_sequence_done(task, res); | |
df896455 TM |
518 | } |
519 | ||
510b8175 BH |
520 | /* |
521 | * nfs4_find_slot - efficiently look for a free slot | |
522 | * | |
523 | * nfs4_find_slot looks for an unset bit in the used_slots bitmap. | |
524 | * If found, we mark the slot as used, update the highest_used_slotid, | |
525 | * and respectively set up the sequence operation args. | |
45d43c29 | 526 | * The slot number is returned if found, or NFS4_NO_SLOT otherwise. |
fbcd4abc AA |
527 | * |
528 | * Note: must be called with under the slot_tbl_lock. | |
510b8175 | 529 | */ |
45d43c29 | 530 | static u32 |
40ead580 | 531 | nfs4_find_slot(struct nfs4_slot_table *tbl) |
510b8175 | 532 | { |
45d43c29 TM |
533 | u32 slotid; |
534 | u32 ret_id = NFS4_NO_SLOT; | |
510b8175 | 535 | |
45d43c29 | 536 | dprintk("--> %s used_slots=%04lx highest_used=%u max_slots=%u\n", |
510b8175 BH |
537 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, |
538 | tbl->max_slots); | |
539 | slotid = find_first_zero_bit(tbl->used_slots, tbl->max_slots); | |
540 | if (slotid >= tbl->max_slots) | |
541 | goto out; | |
542 | __set_bit(slotid, tbl->used_slots); | |
45d43c29 TM |
543 | if (slotid > tbl->highest_used_slotid || |
544 | tbl->highest_used_slotid == NFS4_NO_SLOT) | |
510b8175 BH |
545 | tbl->highest_used_slotid = slotid; |
546 | ret_id = slotid; | |
547 | out: | |
548 | dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n", | |
549 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, ret_id); | |
510b8175 BH |
550 | return ret_id; |
551 | } | |
552 | ||
9d12b216 TM |
553 | static void nfs41_init_sequence(struct nfs4_sequence_args *args, |
554 | struct nfs4_sequence_res *res, int cache_reply) | |
555 | { | |
556 | args->sa_session = NULL; | |
557 | args->sa_cache_this = 0; | |
558 | if (cache_reply) | |
559 | args->sa_cache_this = 1; | |
560 | res->sr_session = NULL; | |
561 | res->sr_slot = NULL; | |
562 | } | |
563 | ||
dc70d7b3 | 564 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
565 | struct nfs4_sequence_args *args, |
566 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
567 | struct rpc_task *task) |
568 | { | |
fbcd4abc AA |
569 | struct nfs4_slot *slot; |
570 | struct nfs4_slot_table *tbl; | |
45d43c29 | 571 | u32 slotid; |
fbcd4abc AA |
572 | |
573 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 574 | /* slot already allocated? */ |
dfb4f309 | 575 | if (res->sr_slot != NULL) |
ce5039c1 AA |
576 | return 0; |
577 | ||
fbcd4abc AA |
578 | tbl = &session->fc_slot_table; |
579 | ||
580 | spin_lock(&tbl->slot_tbl_lock); | |
a2118c33 | 581 | if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) && |
5601a00d | 582 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { |
0b1c8fc4 | 583 | /* The state manager will wait until the slot table is empty */ |
05f0d236 | 584 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
b069d94a | 585 | spin_unlock(&tbl->slot_tbl_lock); |
0b1c8fc4 | 586 | dprintk("%s session is draining\n", __func__); |
05f0d236 | 587 | return -EAGAIN; |
b069d94a AA |
588 | } |
589 | ||
689cf5c1 AB |
590 | if (!rpc_queue_empty(&tbl->slot_tbl_waitq) && |
591 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { | |
592 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
593 | spin_unlock(&tbl->slot_tbl_lock); | |
594 | dprintk("%s enforce FIFO order\n", __func__); | |
595 | return -EAGAIN; | |
596 | } | |
597 | ||
40ead580 | 598 | slotid = nfs4_find_slot(tbl); |
45d43c29 | 599 | if (slotid == NFS4_NO_SLOT) { |
fbcd4abc AA |
600 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
601 | spin_unlock(&tbl->slot_tbl_lock); | |
602 | dprintk("<-- %s: no free slots\n", __func__); | |
603 | return -EAGAIN; | |
604 | } | |
605 | spin_unlock(&tbl->slot_tbl_lock); | |
606 | ||
689cf5c1 | 607 | rpc_task_set_priority(task, RPC_PRIORITY_NORMAL); |
fbcd4abc | 608 | slot = tbl->slots + slotid; |
99fe60d0 | 609 | args->sa_session = session; |
fbcd4abc | 610 | args->sa_slotid = slotid; |
fbcd4abc AA |
611 | |
612 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, slotid, slot->seq_nr); | |
613 | ||
99fe60d0 | 614 | res->sr_session = session; |
dfb4f309 | 615 | res->sr_slot = slot; |
fbcd4abc | 616 | res->sr_renewal_time = jiffies; |
2a6e26cd | 617 | res->sr_status_flags = 0; |
fbcd4abc AA |
618 | /* |
619 | * sr_status is only set in decode_sequence, and so will remain | |
620 | * set to 1 if an rpc level failure occurs. | |
621 | */ | |
622 | res->sr_status = 1; | |
ce5039c1 AA |
623 | return 0; |
624 | } | |
dc70d7b3 | 625 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 626 | |
035168ab | 627 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
628 | struct nfs4_sequence_args *args, |
629 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
630 | struct rpc_task *task) |
631 | { | |
035168ab | 632 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
633 | int ret = 0; |
634 | ||
9d12b216 | 635 | if (session == NULL) |
035168ab | 636 | goto out; |
035168ab | 637 | |
12364a4f | 638 | dprintk("--> %s clp %p session %p sr_slot %td\n", |
dfb4f309 BH |
639 | __func__, session->clp, session, res->sr_slot ? |
640 | res->sr_slot - session->fc_slot_table.slots : -1); | |
ce5039c1 | 641 | |
9d12b216 | 642 | ret = nfs41_setup_sequence(session, args, res, task); |
ce5039c1 AA |
643 | out: |
644 | dprintk("<-- %s status=%d\n", __func__, ret); | |
645 | return ret; | |
646 | } | |
647 | ||
648 | struct nfs41_call_sync_data { | |
035168ab | 649 | const struct nfs_server *seq_server; |
ce5039c1 AA |
650 | struct nfs4_sequence_args *seq_args; |
651 | struct nfs4_sequence_res *seq_res; | |
ce5039c1 AA |
652 | }; |
653 | ||
654 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
655 | { | |
656 | struct nfs41_call_sync_data *data = calldata; | |
657 | ||
035168ab TM |
658 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
659 | ||
660 | if (nfs4_setup_sequence(data->seq_server, data->seq_args, | |
9d12b216 | 661 | data->seq_res, task)) |
ce5039c1 AA |
662 | return; |
663 | rpc_call_start(task); | |
664 | } | |
665 | ||
b257957e AB |
666 | static void nfs41_call_priv_sync_prepare(struct rpc_task *task, void *calldata) |
667 | { | |
668 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
669 | nfs41_call_sync_prepare(task, calldata); | |
670 | } | |
671 | ||
69ab40c4 AA |
672 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
673 | { | |
674 | struct nfs41_call_sync_data *data = calldata; | |
675 | ||
14516c3a | 676 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
677 | } |
678 | ||
17280175 | 679 | static const struct rpc_call_ops nfs41_call_sync_ops = { |
ce5039c1 | 680 | .rpc_call_prepare = nfs41_call_sync_prepare, |
69ab40c4 | 681 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
682 | }; |
683 | ||
17280175 | 684 | static const struct rpc_call_ops nfs41_call_priv_sync_ops = { |
b257957e AB |
685 | .rpc_call_prepare = nfs41_call_priv_sync_prepare, |
686 | .rpc_call_done = nfs41_call_sync_done, | |
687 | }; | |
688 | ||
7c513058 BS |
689 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
690 | struct nfs_server *server, | |
ce5039c1 AA |
691 | struct rpc_message *msg, |
692 | struct nfs4_sequence_args *args, | |
693 | struct nfs4_sequence_res *res, | |
b257957e | 694 | int privileged) |
ce5039c1 AA |
695 | { |
696 | int ret; | |
697 | struct rpc_task *task; | |
698 | struct nfs41_call_sync_data data = { | |
035168ab | 699 | .seq_server = server, |
ce5039c1 AA |
700 | .seq_args = args, |
701 | .seq_res = res, | |
ce5039c1 AA |
702 | }; |
703 | struct rpc_task_setup task_setup = { | |
7c513058 | 704 | .rpc_client = clnt, |
ce5039c1 AA |
705 | .rpc_message = msg, |
706 | .callback_ops = &nfs41_call_sync_ops, | |
707 | .callback_data = &data | |
708 | }; | |
709 | ||
b257957e AB |
710 | if (privileged) |
711 | task_setup.callback_ops = &nfs41_call_priv_sync_ops; | |
ce5039c1 AA |
712 | task = rpc_run_task(&task_setup); |
713 | if (IS_ERR(task)) | |
714 | ret = PTR_ERR(task); | |
715 | else { | |
716 | ret = task->tk_status; | |
717 | rpc_put_task(task); | |
718 | } | |
719 | return ret; | |
720 | } | |
721 | ||
7c513058 BS |
722 | int _nfs4_call_sync_session(struct rpc_clnt *clnt, |
723 | struct nfs_server *server, | |
cccef3b9 AA |
724 | struct rpc_message *msg, |
725 | struct nfs4_sequence_args *args, | |
726 | struct nfs4_sequence_res *res, | |
727 | int cache_reply) | |
728 | { | |
9d12b216 TM |
729 | nfs41_init_sequence(args, res, cache_reply); |
730 | return nfs4_call_sync_sequence(clnt, server, msg, args, res, 0); | |
cccef3b9 AA |
731 | } |
732 | ||
df896455 | 733 | #else |
9d12b216 TM |
734 | static inline |
735 | void nfs41_init_sequence(struct nfs4_sequence_args *args, | |
736 | struct nfs4_sequence_res *res, int cache_reply) | |
737 | { | |
738 | } | |
739 | ||
14516c3a TM |
740 | static int nfs4_sequence_done(struct rpc_task *task, |
741 | struct nfs4_sequence_res *res) | |
df896455 | 742 | { |
14516c3a | 743 | return 1; |
df896455 | 744 | } |
cccef3b9 AA |
745 | #endif /* CONFIG_NFS_V4_1 */ |
746 | ||
7c513058 BS |
747 | int _nfs4_call_sync(struct rpc_clnt *clnt, |
748 | struct nfs_server *server, | |
cccef3b9 AA |
749 | struct rpc_message *msg, |
750 | struct nfs4_sequence_args *args, | |
751 | struct nfs4_sequence_res *res, | |
752 | int cache_reply) | |
753 | { | |
9d12b216 | 754 | nfs41_init_sequence(args, res, cache_reply); |
7c513058 | 755 | return rpc_call_sync(clnt, msg, 0); |
cccef3b9 AA |
756 | } |
757 | ||
e73b83f2 | 758 | static inline |
7c513058 BS |
759 | int nfs4_call_sync(struct rpc_clnt *clnt, |
760 | struct nfs_server *server, | |
e73b83f2 BS |
761 | struct rpc_message *msg, |
762 | struct nfs4_sequence_args *args, | |
763 | struct nfs4_sequence_res *res, | |
764 | int cache_reply) | |
765 | { | |
7c513058 BS |
766 | return server->nfs_client->cl_mvops->call_sync(clnt, server, msg, |
767 | args, res, cache_reply); | |
e73b83f2 | 768 | } |
cccef3b9 | 769 | |
38478b24 | 770 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 771 | { |
38478b24 | 772 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 773 | |
38478b24 | 774 | spin_lock(&dir->i_lock); |
40d24704 | 775 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; |
a9a4a87a | 776 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 777 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 778 | dir->i_version = cinfo->after; |
38478b24 | 779 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
780 | } |
781 | ||
e56e0b78 | 782 | struct nfs4_opendata { |
c6d00e63 | 783 | struct kref kref; |
e56e0b78 TM |
784 | struct nfs_openargs o_arg; |
785 | struct nfs_openres o_res; | |
cdd4e68b TM |
786 | struct nfs_open_confirmargs c_arg; |
787 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
788 | struct nfs4_string owner_name; |
789 | struct nfs4_string group_name; | |
e56e0b78 TM |
790 | struct nfs_fattr f_attr; |
791 | struct nfs_fattr dir_attr; | |
e56e0b78 | 792 | struct dentry *dir; |
82a2c1b7 | 793 | struct dentry *dentry; |
e56e0b78 | 794 | struct nfs4_state_owner *owner; |
aac00a8d | 795 | struct nfs4_state *state; |
e56e0b78 | 796 | struct iattr attrs; |
26e976a8 | 797 | unsigned long timestamp; |
3e309914 | 798 | unsigned int rpc_done : 1; |
24ac23ab TM |
799 | int rpc_status; |
800 | int cancelled; | |
e56e0b78 TM |
801 | }; |
802 | ||
2ced46c2 TM |
803 | |
804 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
805 | { | |
806 | p->o_res.f_attr = &p->f_attr; | |
807 | p->o_res.dir_attr = &p->dir_attr; | |
c1d51931 TM |
808 | p->o_res.seqid = p->o_arg.seqid; |
809 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 TM |
810 | p->o_res.server = p->o_arg.server; |
811 | nfs_fattr_init(&p->f_attr); | |
812 | nfs_fattr_init(&p->dir_attr); | |
6926afd1 | 813 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
814 | } |
815 | ||
82a2c1b7 | 816 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 817 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be TM |
818 | const struct iattr *attrs, |
819 | gfp_t gfp_mask) | |
e56e0b78 | 820 | { |
82a2c1b7 | 821 | struct dentry *parent = dget_parent(dentry); |
e56e0b78 TM |
822 | struct inode *dir = parent->d_inode; |
823 | struct nfs_server *server = NFS_SERVER(dir); | |
824 | struct nfs4_opendata *p; | |
825 | ||
8535b2be | 826 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
827 | if (p == NULL) |
828 | goto err; | |
8535b2be | 829 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 TM |
830 | if (p->o_arg.seqid == NULL) |
831 | goto err_free; | |
82a2c1b7 AV |
832 | nfs_sb_active(dentry->d_sb); |
833 | p->dentry = dget(dentry); | |
e56e0b78 TM |
834 | p->dir = parent; |
835 | p->owner = sp; | |
836 | atomic_inc(&sp->so_count); | |
837 | p->o_arg.fh = NFS_FH(dir); | |
dc0b027d TM |
838 | p->o_arg.open_flags = flags; |
839 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
7539bbab | 840 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
95b72eb0 TM |
841 | p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time); |
842 | p->o_arg.id.uniquifier = sp->so_seqid.owner_id; | |
82a2c1b7 | 843 | p->o_arg.name = &dentry->d_name; |
e56e0b78 TM |
844 | p->o_arg.server = server; |
845 | p->o_arg.bitmask = server->attr_bitmask; | |
6926afd1 | 846 | p->o_arg.dir_bitmask = server->cache_consistency_bitmask; |
e56e0b78 | 847 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; |
536e43d1 | 848 | if (attrs != NULL && attrs->ia_valid != 0) { |
cd93710e | 849 | __be32 verf[2]; |
d77d76ff | 850 | |
e56e0b78 TM |
851 | p->o_arg.u.attrs = &p->attrs; |
852 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
cd93710e CL |
853 | |
854 | verf[0] = jiffies; | |
855 | verf[1] = current->pid; | |
856 | memcpy(p->o_arg.u.verifier.data, verf, | |
857 | sizeof(p->o_arg.u.verifier.data)); | |
e56e0b78 | 858 | } |
cdd4e68b TM |
859 | p->c_arg.fh = &p->o_res.fh; |
860 | p->c_arg.stateid = &p->o_res.stateid; | |
861 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 862 | nfs4_init_opendata_res(p); |
c6d00e63 | 863 | kref_init(&p->kref); |
e56e0b78 TM |
864 | return p; |
865 | err_free: | |
866 | kfree(p); | |
867 | err: | |
868 | dput(parent); | |
869 | return NULL; | |
870 | } | |
871 | ||
c6d00e63 | 872 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 873 | { |
c6d00e63 TM |
874 | struct nfs4_opendata *p = container_of(kref, |
875 | struct nfs4_opendata, kref); | |
82a2c1b7 | 876 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
877 | |
878 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
879 | if (p->state != NULL) |
880 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
881 | nfs4_put_state_owner(p->owner); |
882 | dput(p->dir); | |
82a2c1b7 AV |
883 | dput(p->dentry); |
884 | nfs_sb_deactive(sb); | |
6926afd1 | 885 | nfs_fattr_free_names(&p->f_attr); |
c6d00e63 TM |
886 | kfree(p); |
887 | } | |
888 | ||
889 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
890 | { | |
891 | if (p != NULL) | |
892 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
893 | } |
894 | ||
06f814a3 TM |
895 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
896 | { | |
06f814a3 TM |
897 | int ret; |
898 | ||
06f814a3 | 899 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
900 | return ret; |
901 | } | |
902 | ||
dc0b027d | 903 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
904 | { |
905 | int ret = 0; | |
dc0b027d | 906 | |
536e43d1 | 907 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
908 | goto out; |
909 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 910 | case FMODE_READ: |
88069f77 TM |
911 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
912 | && state->n_rdonly != 0; | |
6ee41268 TM |
913 | break; |
914 | case FMODE_WRITE: | |
88069f77 TM |
915 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
916 | && state->n_wronly != 0; | |
6ee41268 TM |
917 | break; |
918 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
919 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
920 | && state->n_rdwr != 0; | |
6ee41268 | 921 | } |
dc0b027d | 922 | out: |
6ee41268 TM |
923 | return ret; |
924 | } | |
925 | ||
dc0b027d | 926 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 927 | { |
652f89f6 TM |
928 | if (delegation == NULL) |
929 | return 0; | |
dc0b027d | 930 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 931 | return 0; |
15c831bf | 932 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 933 | return 0; |
b7391f44 | 934 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
935 | return 1; |
936 | } | |
937 | ||
dc0b027d | 938 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 939 | { |
dc0b027d | 940 | switch (fmode) { |
e7616923 TM |
941 | case FMODE_WRITE: |
942 | state->n_wronly++; | |
943 | break; | |
944 | case FMODE_READ: | |
945 | state->n_rdonly++; | |
946 | break; | |
947 | case FMODE_READ|FMODE_WRITE: | |
948 | state->n_rdwr++; | |
949 | } | |
dc0b027d | 950 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
951 | } |
952 | ||
dc0b027d | 953 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
954 | { |
955 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
f597c537 TM |
956 | nfs4_stateid_copy(&state->stateid, stateid); |
957 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
dc0b027d | 958 | switch (fmode) { |
003707c7 TM |
959 | case FMODE_READ: |
960 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
961 | break; | |
962 | case FMODE_WRITE: | |
963 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
964 | break; | |
965 | case FMODE_READ|FMODE_WRITE: | |
966 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
967 | } | |
e7616923 TM |
968 | } |
969 | ||
dc0b027d | 970 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 971 | { |
8bda4e4c | 972 | write_seqlock(&state->seqlock); |
dc0b027d | 973 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 974 | write_sequnlock(&state->seqlock); |
003707c7 TM |
975 | } |
976 | ||
dc0b027d | 977 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 978 | { |
8bda4e4c TM |
979 | /* |
980 | * Protect the call to nfs4_state_set_mode_locked and | |
981 | * serialise the stateid update | |
982 | */ | |
983 | write_seqlock(&state->seqlock); | |
003707c7 | 984 | if (deleg_stateid != NULL) { |
f597c537 | 985 | nfs4_stateid_copy(&state->stateid, deleg_stateid); |
003707c7 TM |
986 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
987 | } | |
988 | if (open_stateid != NULL) | |
dc0b027d | 989 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
990 | write_sequnlock(&state->seqlock); |
991 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 992 | update_open_stateflags(state, fmode); |
ec073428 | 993 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
994 | } |
995 | ||
dc0b027d | 996 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
997 | { |
998 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
999 | struct nfs_delegation *deleg_cur; | |
1000 | int ret = 0; | |
1001 | ||
dc0b027d | 1002 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
1003 | |
1004 | rcu_read_lock(); | |
1005 | deleg_cur = rcu_dereference(nfsi->delegation); | |
1006 | if (deleg_cur == NULL) | |
1007 | goto no_delegation; | |
1008 | ||
1009 | spin_lock(&deleg_cur->lock); | |
1010 | if (nfsi->delegation != deleg_cur || | |
dc0b027d | 1011 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
1012 | goto no_delegation_unlock; |
1013 | ||
1014 | if (delegation == NULL) | |
1015 | delegation = &deleg_cur->stateid; | |
f597c537 | 1016 | else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) |
34310430 TM |
1017 | goto no_delegation_unlock; |
1018 | ||
b7391f44 | 1019 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 1020 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
1021 | ret = 1; |
1022 | no_delegation_unlock: | |
1023 | spin_unlock(&deleg_cur->lock); | |
1024 | no_delegation: | |
1025 | rcu_read_unlock(); | |
1026 | ||
1027 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 1028 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
1029 | ret = 1; |
1030 | } | |
1031 | ||
1032 | return ret; | |
1033 | } | |
1034 | ||
1035 | ||
dc0b027d | 1036 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1037 | { |
1038 | struct nfs_delegation *delegation; | |
1039 | ||
1040 | rcu_read_lock(); | |
1041 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1042 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1043 | rcu_read_unlock(); |
1044 | return; | |
1045 | } | |
1046 | rcu_read_unlock(); | |
1047 | nfs_inode_return_delegation(inode); | |
1048 | } | |
1049 | ||
6ee41268 | 1050 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1051 | { |
1052 | struct nfs4_state *state = opendata->state; | |
1053 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1054 | struct nfs_delegation *delegation; | |
536e43d1 | 1055 | int open_mode = opendata->o_arg.open_flags & (O_EXCL|O_TRUNC); |
dc0b027d | 1056 | fmode_t fmode = opendata->o_arg.fmode; |
aac00a8d TM |
1057 | nfs4_stateid stateid; |
1058 | int ret = -EAGAIN; | |
1059 | ||
aac00a8d | 1060 | for (;;) { |
dc0b027d | 1061 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 1062 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
1063 | if (can_open_cached(state, fmode, open_mode)) { |
1064 | update_open_stateflags(state, fmode); | |
6ee41268 | 1065 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
1066 | goto out_return_state; |
1067 | } | |
1068 | spin_unlock(&state->owner->so_lock); | |
1069 | } | |
34310430 TM |
1070 | rcu_read_lock(); |
1071 | delegation = rcu_dereference(nfsi->delegation); | |
652f89f6 | 1072 | if (!can_open_delegated(delegation, fmode)) { |
34310430 | 1073 | rcu_read_unlock(); |
aac00a8d | 1074 | break; |
34310430 | 1075 | } |
aac00a8d | 1076 | /* Save the delegation */ |
f597c537 | 1077 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1078 | rcu_read_unlock(); |
af22f94a | 1079 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
1080 | if (ret != 0) |
1081 | goto out; | |
1082 | ret = -EAGAIN; | |
34310430 TM |
1083 | |
1084 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1085 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1086 | goto out_return_state; |
aac00a8d | 1087 | } |
aac00a8d TM |
1088 | out: |
1089 | return ERR_PTR(ret); | |
1090 | out_return_state: | |
1091 | atomic_inc(&state->count); | |
1092 | return state; | |
1093 | } | |
1094 | ||
24ac23ab TM |
1095 | static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) |
1096 | { | |
1097 | struct inode *inode; | |
1098 | struct nfs4_state *state = NULL; | |
003707c7 | 1099 | struct nfs_delegation *delegation; |
1b370bc2 | 1100 | int ret; |
24ac23ab | 1101 | |
aac00a8d | 1102 | if (!data->rpc_done) { |
6ee41268 | 1103 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1104 | goto out; |
1105 | } | |
1106 | ||
1b370bc2 | 1107 | ret = -EAGAIN; |
24ac23ab | 1108 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1109 | goto err; |
24ac23ab | 1110 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 1111 | ret = PTR_ERR(inode); |
03f28e3a | 1112 | if (IS_ERR(inode)) |
1b370bc2 TM |
1113 | goto err; |
1114 | ret = -ENOMEM; | |
24ac23ab TM |
1115 | state = nfs4_get_open_state(inode, data->owner); |
1116 | if (state == NULL) | |
1b370bc2 | 1117 | goto err_put_inode; |
549d6ed5 | 1118 | if (data->o_res.delegation_type != 0) { |
4e0038b6 | 1119 | struct nfs_client *clp = NFS_SERVER(inode)->nfs_client; |
549d6ed5 TM |
1120 | int delegation_flags = 0; |
1121 | ||
003707c7 TM |
1122 | rcu_read_lock(); |
1123 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
1124 | if (delegation) | |
1125 | delegation_flags = delegation->flags; | |
1126 | rcu_read_unlock(); | |
652f89f6 TM |
1127 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) { |
1128 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " | |
1129 | "returning a delegation for " | |
1130 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
4e0038b6 | 1131 | clp->cl_hostname); |
652f89f6 | 1132 | } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) |
549d6ed5 TM |
1133 | nfs_inode_set_delegation(state->inode, |
1134 | data->owner->so_cred, | |
1135 | &data->o_res); | |
1136 | else | |
1137 | nfs_inode_reclaim_delegation(state->inode, | |
1138 | data->owner->so_cred, | |
1139 | &data->o_res); | |
1140 | } | |
34310430 TM |
1141 | |
1142 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
dc0b027d | 1143 | data->o_arg.fmode); |
24ac23ab | 1144 | iput(inode); |
aac00a8d | 1145 | out: |
24ac23ab | 1146 | return state; |
1b370bc2 TM |
1147 | err_put_inode: |
1148 | iput(inode); | |
1149 | err: | |
1150 | return ERR_PTR(ret); | |
24ac23ab TM |
1151 | } |
1152 | ||
864472e9 TM |
1153 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1154 | { | |
1155 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1156 | struct nfs_open_context *ctx; | |
1157 | ||
1158 | spin_lock(&state->inode->i_lock); | |
1159 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1160 | if (ctx->state != state) | |
1161 | continue; | |
1162 | get_nfs_open_context(ctx); | |
1163 | spin_unlock(&state->inode->i_lock); | |
1164 | return ctx; | |
1165 | } | |
1166 | spin_unlock(&state->inode->i_lock); | |
1167 | return ERR_PTR(-ENOENT); | |
1168 | } | |
1169 | ||
6f220ed5 TM |
1170 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
1171 | { | |
1172 | struct nfs4_opendata *opendata; | |
1173 | ||
3d4ff43d | 1174 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, NULL, GFP_NOFS); |
6f220ed5 TM |
1175 | if (opendata == NULL) |
1176 | return ERR_PTR(-ENOMEM); | |
1177 | opendata->state = state; | |
1178 | atomic_inc(&state->count); | |
1179 | return opendata; | |
1180 | } | |
1181 | ||
dc0b027d | 1182 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1183 | { |
2ced46c2 | 1184 | struct nfs4_state *newstate; |
864472e9 TM |
1185 | int ret; |
1186 | ||
dc0b027d TM |
1187 | opendata->o_arg.open_flags = 0; |
1188 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1189 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1190 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1191 | nfs4_init_opendata_res(opendata); | |
b257957e | 1192 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1193 | if (ret != 0) |
1194 | return ret; | |
2ced46c2 | 1195 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1196 | if (IS_ERR(newstate)) |
1197 | return PTR_ERR(newstate); | |
643168c2 | 1198 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1199 | *res = newstate; |
864472e9 TM |
1200 | return 0; |
1201 | } | |
1202 | ||
1203 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1204 | { | |
864472e9 | 1205 | struct nfs4_state *newstate; |
864472e9 TM |
1206 | int ret; |
1207 | ||
1208 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1209 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
1210 | smp_rmb(); |
1211 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1212 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1213 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1214 | if (ret != 0) |
1215 | return ret; | |
2ced46c2 TM |
1216 | if (newstate != state) |
1217 | return -ESTALE; | |
864472e9 TM |
1218 | } |
1219 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1220 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1221 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1222 | if (ret != 0) |
1223 | return ret; | |
2ced46c2 TM |
1224 | if (newstate != state) |
1225 | return -ESTALE; | |
864472e9 TM |
1226 | } |
1227 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1228 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1229 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1230 | if (ret != 0) |
1231 | return ret; | |
2ced46c2 TM |
1232 | if (newstate != state) |
1233 | return -ESTALE; | |
864472e9 | 1234 | } |
1ac7e2fd TM |
1235 | /* |
1236 | * We may have performed cached opens for all three recoveries. | |
1237 | * Check if we need to update the current stateid. | |
1238 | */ | |
1239 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 1240 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 1241 | write_seqlock(&state->seqlock); |
1ac7e2fd | 1242 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 1243 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 1244 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1245 | } |
864472e9 TM |
1246 | return 0; |
1247 | } | |
1248 | ||
1da177e4 LT |
1249 | /* |
1250 | * OPEN_RECLAIM: | |
1251 | * reclaim state on the server after a reboot. | |
1da177e4 | 1252 | */ |
539cd03a | 1253 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1254 | { |
1ac7e2fd | 1255 | struct nfs_delegation *delegation; |
864472e9 | 1256 | struct nfs4_opendata *opendata; |
dc0b027d | 1257 | fmode_t delegation_type = 0; |
1da177e4 LT |
1258 | int status; |
1259 | ||
6f220ed5 TM |
1260 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1261 | if (IS_ERR(opendata)) | |
1262 | return PTR_ERR(opendata); | |
864472e9 TM |
1263 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
1264 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
1265 | rcu_read_lock(); |
1266 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1267 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1268 | delegation_type = delegation->type; |
1ac7e2fd | 1269 | rcu_read_unlock(); |
864472e9 TM |
1270 | opendata->o_arg.u.delegation_type = delegation_type; |
1271 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1272 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1273 | return status; |
1274 | } | |
1275 | ||
539cd03a | 1276 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1277 | { |
1278 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1279 | struct nfs4_exception exception = { }; | |
1280 | int err; | |
1281 | do { | |
539cd03a | 1282 | err = _nfs4_do_open_reclaim(ctx, state); |
168667c4 | 1283 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1284 | break; |
1285 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1286 | } while (exception.retry); |
1287 | return err; | |
1288 | } | |
1289 | ||
864472e9 TM |
1290 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1291 | { | |
1292 | struct nfs_open_context *ctx; | |
1293 | int ret; | |
1294 | ||
1295 | ctx = nfs4_state_find_open_context(state); | |
1296 | if (IS_ERR(ctx)) | |
1297 | return PTR_ERR(ctx); | |
539cd03a | 1298 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1299 | put_nfs_open_context(ctx); |
1300 | return ret; | |
1301 | } | |
1302 | ||
13437e12 | 1303 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 1304 | { |
e56e0b78 | 1305 | struct nfs4_opendata *opendata; |
864472e9 | 1306 | int ret; |
1da177e4 | 1307 | |
6f220ed5 TM |
1308 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1309 | if (IS_ERR(opendata)) | |
1310 | return PTR_ERR(opendata); | |
e56e0b78 | 1311 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
f597c537 | 1312 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); |
864472e9 | 1313 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 1314 | nfs4_opendata_put(opendata); |
864472e9 | 1315 | return ret; |
1da177e4 LT |
1316 | } |
1317 | ||
13437e12 | 1318 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
1319 | { |
1320 | struct nfs4_exception exception = { }; | |
539cd03a | 1321 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
1322 | int err; |
1323 | do { | |
13437e12 | 1324 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
1325 | switch (err) { |
1326 | case 0: | |
965b5d67 TM |
1327 | case -ENOENT: |
1328 | case -ESTALE: | |
1329 | goto out; | |
bcfa49f6 RL |
1330 | case -NFS4ERR_BADSESSION: |
1331 | case -NFS4ERR_BADSLOT: | |
1332 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1333 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1334 | case -NFS4ERR_DEADSESSION: | |
0400a6b0 | 1335 | nfs4_schedule_session_recovery(server->nfs_client->cl_session); |
bcfa49f6 | 1336 | goto out; |
1da177e4 LT |
1337 | case -NFS4ERR_STALE_CLIENTID: |
1338 | case -NFS4ERR_STALE_STATEID: | |
1339 | case -NFS4ERR_EXPIRED: | |
1340 | /* Don't recall a delegation if it was lost */ | |
0400a6b0 | 1341 | nfs4_schedule_lease_recovery(server->nfs_client); |
965b5d67 TM |
1342 | goto out; |
1343 | case -ERESTARTSYS: | |
1344 | /* | |
1345 | * The show must go on: exit, but mark the | |
1346 | * stateid as needing recovery. | |
1347 | */ | |
a1d0b5ee | 1348 | case -NFS4ERR_DELEG_REVOKED: |
965b5d67 TM |
1349 | case -NFS4ERR_ADMIN_REVOKED: |
1350 | case -NFS4ERR_BAD_STATEID: | |
a1d0b5ee TM |
1351 | nfs_inode_find_state_and_recover(state->inode, |
1352 | stateid); | |
0400a6b0 | 1353 | nfs4_schedule_stateid_recovery(server, state); |
168667c4 TM |
1354 | case -EKEYEXPIRED: |
1355 | /* | |
1356 | * User RPCSEC_GSS context has expired. | |
1357 | * We cannot recover this stateid now, so | |
1358 | * skip it and allow recovery thread to | |
1359 | * proceed. | |
1360 | */ | |
965b5d67 TM |
1361 | case -ENOMEM: |
1362 | err = 0; | |
1363 | goto out; | |
1da177e4 LT |
1364 | } |
1365 | err = nfs4_handle_exception(server, err, &exception); | |
1366 | } while (exception.retry); | |
965b5d67 | 1367 | out: |
1da177e4 LT |
1368 | return err; |
1369 | } | |
1370 | ||
cdd4e68b TM |
1371 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1372 | { | |
1373 | struct nfs4_opendata *data = calldata; | |
1374 | ||
1375 | data->rpc_status = task->tk_status; | |
26e976a8 | 1376 | if (data->rpc_status == 0) { |
f597c537 | 1377 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 1378 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1379 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1380 | data->rpc_done = 1; |
26e976a8 | 1381 | } |
cdd4e68b TM |
1382 | } |
1383 | ||
1384 | static void nfs4_open_confirm_release(void *calldata) | |
1385 | { | |
1386 | struct nfs4_opendata *data = calldata; | |
1387 | struct nfs4_state *state = NULL; | |
1388 | ||
1389 | /* If this request hasn't been cancelled, do nothing */ | |
1390 | if (data->cancelled == 0) | |
1391 | goto out_free; | |
1392 | /* In case of error, no cleanup! */ | |
3e309914 | 1393 | if (!data->rpc_done) |
cdd4e68b | 1394 | goto out_free; |
cdd4e68b | 1395 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1396 | if (!IS_ERR(state)) |
643168c2 | 1397 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1398 | out_free: |
c6d00e63 | 1399 | nfs4_opendata_put(data); |
cdd4e68b TM |
1400 | } |
1401 | ||
1402 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1403 | .rpc_call_done = nfs4_open_confirm_done, |
1404 | .rpc_release = nfs4_open_confirm_release, | |
1405 | }; | |
1406 | ||
1407 | /* | |
1408 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1409 | */ | |
1410 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1411 | { | |
1412 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1413 | struct rpc_task *task; | |
5138fde0 TM |
1414 | struct rpc_message msg = { |
1415 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1416 | .rpc_argp = &data->c_arg, | |
1417 | .rpc_resp = &data->c_res, | |
1418 | .rpc_cred = data->owner->so_cred, | |
1419 | }; | |
c970aa85 TM |
1420 | struct rpc_task_setup task_setup_data = { |
1421 | .rpc_client = server->client, | |
5138fde0 | 1422 | .rpc_message = &msg, |
c970aa85 TM |
1423 | .callback_ops = &nfs4_open_confirm_ops, |
1424 | .callback_data = data, | |
101070ca | 1425 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1426 | .flags = RPC_TASK_ASYNC, |
1427 | }; | |
1da177e4 LT |
1428 | int status; |
1429 | ||
c6d00e63 | 1430 | kref_get(&data->kref); |
3e309914 TM |
1431 | data->rpc_done = 0; |
1432 | data->rpc_status = 0; | |
5138fde0 | 1433 | data->timestamp = jiffies; |
c970aa85 | 1434 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1435 | if (IS_ERR(task)) |
cdd4e68b | 1436 | return PTR_ERR(task); |
cdd4e68b TM |
1437 | status = nfs4_wait_for_completion_rpc_task(task); |
1438 | if (status != 0) { | |
1439 | data->cancelled = 1; | |
1440 | smp_wmb(); | |
1441 | } else | |
1442 | status = data->rpc_status; | |
e6b3c4db | 1443 | rpc_put_task(task); |
1da177e4 LT |
1444 | return status; |
1445 | } | |
1446 | ||
24ac23ab | 1447 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1448 | { |
24ac23ab TM |
1449 | struct nfs4_opendata *data = calldata; |
1450 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 1451 | |
24ac23ab TM |
1452 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
1453 | return; | |
aac00a8d TM |
1454 | /* |
1455 | * Check if we still need to send an OPEN call, or if we can use | |
1456 | * a delegation instead. | |
1457 | */ | |
1458 | if (data->state != NULL) { | |
1459 | struct nfs_delegation *delegation; | |
1460 | ||
dc0b027d | 1461 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1462 | goto out_no_action; |
aac00a8d TM |
1463 | rcu_read_lock(); |
1464 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
652f89f6 TM |
1465 | if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR && |
1466 | can_open_delegated(delegation, data->o_arg.fmode)) | |
1467 | goto unlock_no_action; | |
aac00a8d TM |
1468 | rcu_read_unlock(); |
1469 | } | |
95b72eb0 | 1470 | /* Update client id. */ |
1f0e890d | 1471 | data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; |
6f220ed5 | 1472 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 1473 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
6f220ed5 TM |
1474 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1475 | } | |
26e976a8 | 1476 | data->timestamp = jiffies; |
035168ab | 1477 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 1478 | &data->o_arg.seq_args, |
9d12b216 | 1479 | &data->o_res.seq_res, task)) |
d898528c | 1480 | return; |
5138fde0 | 1481 | rpc_call_start(task); |
6ee41268 | 1482 | return; |
652f89f6 TM |
1483 | unlock_no_action: |
1484 | rcu_read_unlock(); | |
6ee41268 TM |
1485 | out_no_action: |
1486 | task->tk_action = NULL; | |
1487 | ||
24ac23ab | 1488 | } |
1da177e4 | 1489 | |
b257957e AB |
1490 | static void nfs4_recover_open_prepare(struct rpc_task *task, void *calldata) |
1491 | { | |
1492 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
1493 | nfs4_open_prepare(task, calldata); | |
1494 | } | |
1495 | ||
24ac23ab TM |
1496 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1497 | { | |
1498 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1499 | |
24ac23ab | 1500 | data->rpc_status = task->tk_status; |
d898528c | 1501 | |
14516c3a TM |
1502 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1503 | return; | |
d898528c | 1504 | |
24ac23ab TM |
1505 | if (task->tk_status == 0) { |
1506 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1507 | case S_IFREG: |
1508 | break; | |
1509 | case S_IFLNK: | |
24ac23ab | 1510 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1511 | break; |
1512 | case S_IFDIR: | |
24ac23ab | 1513 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1514 | break; |
1515 | default: | |
24ac23ab | 1516 | data->rpc_status = -ENOTDIR; |
6f926b5b | 1517 | } |
26e976a8 | 1518 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1519 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1520 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1521 | } |
3e309914 | 1522 | data->rpc_done = 1; |
24ac23ab | 1523 | } |
6f926b5b | 1524 | |
24ac23ab TM |
1525 | static void nfs4_open_release(void *calldata) |
1526 | { | |
1527 | struct nfs4_opendata *data = calldata; | |
1528 | struct nfs4_state *state = NULL; | |
1529 | ||
1530 | /* If this request hasn't been cancelled, do nothing */ | |
1531 | if (data->cancelled == 0) | |
1532 | goto out_free; | |
1533 | /* In case of error, no cleanup! */ | |
3e309914 | 1534 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1535 | goto out_free; |
1536 | /* In case we need an open_confirm, no cleanup! */ | |
1537 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1538 | goto out_free; | |
24ac23ab | 1539 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1540 | if (!IS_ERR(state)) |
643168c2 | 1541 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1542 | out_free: |
c6d00e63 | 1543 | nfs4_opendata_put(data); |
24ac23ab TM |
1544 | } |
1545 | ||
1546 | static const struct rpc_call_ops nfs4_open_ops = { | |
1547 | .rpc_call_prepare = nfs4_open_prepare, | |
1548 | .rpc_call_done = nfs4_open_done, | |
1549 | .rpc_release = nfs4_open_release, | |
1550 | }; | |
1551 | ||
b257957e AB |
1552 | static const struct rpc_call_ops nfs4_recover_open_ops = { |
1553 | .rpc_call_prepare = nfs4_recover_open_prepare, | |
1554 | .rpc_call_done = nfs4_open_done, | |
1555 | .rpc_release = nfs4_open_release, | |
1556 | }; | |
1557 | ||
1558 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) | |
24ac23ab TM |
1559 | { |
1560 | struct inode *dir = data->dir->d_inode; | |
1561 | struct nfs_server *server = NFS_SERVER(dir); | |
1562 | struct nfs_openargs *o_arg = &data->o_arg; | |
1563 | struct nfs_openres *o_res = &data->o_res; | |
1564 | struct rpc_task *task; | |
5138fde0 TM |
1565 | struct rpc_message msg = { |
1566 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1567 | .rpc_argp = o_arg, | |
1568 | .rpc_resp = o_res, | |
1569 | .rpc_cred = data->owner->so_cred, | |
1570 | }; | |
c970aa85 TM |
1571 | struct rpc_task_setup task_setup_data = { |
1572 | .rpc_client = server->client, | |
5138fde0 | 1573 | .rpc_message = &msg, |
c970aa85 TM |
1574 | .callback_ops = &nfs4_open_ops, |
1575 | .callback_data = data, | |
101070ca | 1576 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1577 | .flags = RPC_TASK_ASYNC, |
1578 | }; | |
24ac23ab TM |
1579 | int status; |
1580 | ||
9d12b216 | 1581 | nfs41_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 1582 | kref_get(&data->kref); |
3e309914 TM |
1583 | data->rpc_done = 0; |
1584 | data->rpc_status = 0; | |
2ced46c2 | 1585 | data->cancelled = 0; |
b257957e AB |
1586 | if (isrecover) |
1587 | task_setup_data.callback_ops = &nfs4_recover_open_ops; | |
c970aa85 | 1588 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1589 | if (IS_ERR(task)) |
1590 | return PTR_ERR(task); | |
1591 | status = nfs4_wait_for_completion_rpc_task(task); | |
1592 | if (status != 0) { | |
1593 | data->cancelled = 1; | |
1594 | smp_wmb(); | |
1595 | } else | |
1596 | status = data->rpc_status; | |
1597 | rpc_put_task(task); | |
1598 | ||
1599 | return status; | |
1600 | } | |
1601 | ||
1602 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1603 | { | |
1604 | struct inode *dir = data->dir->d_inode; | |
1605 | struct nfs_openres *o_res = &data->o_res; | |
1606 | int status; | |
1607 | ||
1608 | status = nfs4_run_open_task(data, 1); | |
1609 | if (status != 0 || !data->rpc_done) | |
1610 | return status; | |
1611 | ||
6926afd1 TM |
1612 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
1613 | ||
b257957e AB |
1614 | nfs_refresh_inode(dir, o_res->dir_attr); |
1615 | ||
1616 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { | |
1617 | status = _nfs4_proc_open_confirm(data); | |
1618 | if (status != 0) | |
1619 | return status; | |
1620 | } | |
1621 | ||
1622 | return status; | |
1623 | } | |
1624 | ||
1625 | /* | |
1626 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1627 | */ | |
1628 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1629 | { | |
1630 | struct inode *dir = data->dir->d_inode; | |
1631 | struct nfs_server *server = NFS_SERVER(dir); | |
1632 | struct nfs_openargs *o_arg = &data->o_arg; | |
1633 | struct nfs_openres *o_res = &data->o_res; | |
1634 | int status; | |
1635 | ||
1636 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
1637 | if (!data->rpc_done) |
1638 | return status; | |
1639 | if (status != 0) { | |
1640 | if (status == -NFS4ERR_BADNAME && | |
1641 | !(o_arg->open_flags & O_CREAT)) | |
1642 | return -ENOENT; | |
24ac23ab | 1643 | return status; |
08ef7bd3 | 1644 | } |
24ac23ab | 1645 | |
6926afd1 TM |
1646 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
1647 | ||
56ae19f3 TM |
1648 | if (o_arg->open_flags & O_CREAT) { |
1649 | update_changeattr(dir, &o_res->cinfo); | |
1650 | nfs_post_op_update_inode(dir, o_res->dir_attr); | |
1651 | } else | |
1652 | nfs_refresh_inode(dir, o_res->dir_attr); | |
0df5dd4a TM |
1653 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1654 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1655 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1656 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1657 | if (status != 0) |
24ac23ab | 1658 | return status; |
1da177e4 LT |
1659 | } |
1660 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1661 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1662 | return 0; |
1da177e4 LT |
1663 | } |
1664 | ||
d83217c1 | 1665 | static int nfs4_client_recover_expired_lease(struct nfs_client *clp) |
58d9714a | 1666 | { |
a78cb57a | 1667 | unsigned int loop; |
6b30954e | 1668 | int ret; |
58d9714a | 1669 | |
a78cb57a | 1670 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { |
65de872e | 1671 | ret = nfs4_wait_clnt_recover(clp); |
6b30954e | 1672 | if (ret != 0) |
a78cb57a | 1673 | break; |
e598d843 TM |
1674 | if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) && |
1675 | !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state)) | |
6b30954e | 1676 | break; |
0400a6b0 | 1677 | nfs4_schedule_state_manager(clp); |
a78cb57a | 1678 | ret = -EIO; |
6b30954e | 1679 | } |
a78cb57a | 1680 | return ret; |
58d9714a TM |
1681 | } |
1682 | ||
d83217c1 AA |
1683 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1684 | { | |
1685 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1686 | } | |
1687 | ||
1da177e4 LT |
1688 | /* |
1689 | * OPEN_EXPIRED: | |
1690 | * reclaim state on the server after a network partition. | |
1691 | * Assumes caller holds the appropriate lock | |
1692 | */ | |
539cd03a | 1693 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1694 | { |
e56e0b78 | 1695 | struct nfs4_opendata *opendata; |
864472e9 | 1696 | int ret; |
1da177e4 | 1697 | |
6f220ed5 TM |
1698 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1699 | if (IS_ERR(opendata)) | |
1700 | return PTR_ERR(opendata); | |
864472e9 | 1701 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1702 | if (ret == -ESTALE) |
3d4ff43d | 1703 | d_drop(ctx->dentry); |
c6d00e63 | 1704 | nfs4_opendata_put(opendata); |
864472e9 | 1705 | return ret; |
1da177e4 LT |
1706 | } |
1707 | ||
a9ed2e25 | 1708 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1709 | { |
539cd03a | 1710 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1711 | struct nfs4_exception exception = { }; |
1712 | int err; | |
1713 | ||
1714 | do { | |
539cd03a | 1715 | err = _nfs4_open_expired(ctx, state); |
a9ed2e25 TM |
1716 | switch (err) { |
1717 | default: | |
1718 | goto out; | |
1719 | case -NFS4ERR_GRACE: | |
1720 | case -NFS4ERR_DELAY: | |
1721 | nfs4_handle_exception(server, err, &exception); | |
1722 | err = 0; | |
1723 | } | |
202b50dc | 1724 | } while (exception.retry); |
a9ed2e25 | 1725 | out: |
202b50dc TM |
1726 | return err; |
1727 | } | |
1728 | ||
1da177e4 LT |
1729 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1730 | { | |
1da177e4 | 1731 | struct nfs_open_context *ctx; |
864472e9 | 1732 | int ret; |
1da177e4 | 1733 | |
864472e9 TM |
1734 | ctx = nfs4_state_find_open_context(state); |
1735 | if (IS_ERR(ctx)) | |
1736 | return PTR_ERR(ctx); | |
539cd03a | 1737 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1738 | put_nfs_open_context(ctx); |
1739 | return ret; | |
1da177e4 LT |
1740 | } |
1741 | ||
f062eb6c | 1742 | #if defined(CONFIG_NFS_V4_1) |
b01dd1d8 | 1743 | static int nfs41_check_expired_stateid(struct nfs4_state *state, nfs4_stateid *stateid, unsigned int flags) |
f062eb6c | 1744 | { |
b01dd1d8 | 1745 | int status = NFS_OK; |
f062eb6c BS |
1746 | struct nfs_server *server = NFS_SERVER(state->inode); |
1747 | ||
b01dd1d8 BS |
1748 | if (state->flags & flags) { |
1749 | status = nfs41_test_stateid(server, stateid); | |
1750 | if (status != NFS_OK) { | |
1751 | nfs41_free_stateid(server, stateid); | |
1752 | state->flags &= ~flags; | |
1753 | } | |
1754 | } | |
1755 | return status; | |
1756 | } | |
1757 | ||
1758 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
1759 | { | |
1760 | int deleg_status, open_status; | |
1761 | int deleg_flags = 1 << NFS_DELEGATED_STATE; | |
1762 | int open_flags = (1 << NFS_O_RDONLY_STATE) | (1 << NFS_O_WRONLY_STATE) | (1 << NFS_O_RDWR_STATE); | |
1763 | ||
1764 | deleg_status = nfs41_check_expired_stateid(state, &state->stateid, deleg_flags); | |
1765 | open_status = nfs41_check_expired_stateid(state, &state->open_stateid, open_flags); | |
1766 | ||
1767 | if ((deleg_status == NFS_OK) && (open_status == NFS_OK)) | |
1768 | return NFS_OK; | |
f062eb6c BS |
1769 | return nfs4_open_expired(sp, state); |
1770 | } | |
1771 | #endif | |
1772 | ||
aa53ed54 JL |
1773 | /* |
1774 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1775 | * fields corresponding to attributes that were used to store the verifier. | |
1776 | * Make sure we clobber those fields in the later setattr call | |
1777 | */ | |
1778 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1779 | { | |
1780 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1781 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1782 | sattr->ia_valid |= ATTR_ATIME; | |
1783 | ||
1784 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1785 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1786 | sattr->ia_valid |= ATTR_MTIME; | |
1787 | } | |
1788 | ||
1da177e4 | 1789 | /* |
24ac23ab | 1790 | * Returns a referenced nfs4_state |
1da177e4 | 1791 | */ |
82a2c1b7 | 1792 | 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 |
1793 | { |
1794 | struct nfs4_state_owner *sp; | |
1795 | struct nfs4_state *state = NULL; | |
1796 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1797 | struct nfs4_opendata *opendata; |
aac00a8d | 1798 | int status; |
1da177e4 LT |
1799 | |
1800 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 1801 | status = -ENOMEM; |
d1e284d5 TM |
1802 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
1803 | if (sp == NULL) { | |
1da177e4 LT |
1804 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
1805 | goto out_err; | |
1806 | } | |
58d9714a TM |
1807 | status = nfs4_recover_expired_lease(server); |
1808 | if (status != 0) | |
b4454fe1 | 1809 | goto err_put_state_owner; |
82a2c1b7 AV |
1810 | if (dentry->d_inode != NULL) |
1811 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 1812 | status = -ENOMEM; |
82a2c1b7 | 1813 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, GFP_KERNEL); |
e56e0b78 | 1814 | if (opendata == NULL) |
95d35cb4 | 1815 | goto err_put_state_owner; |
1da177e4 | 1816 | |
82a2c1b7 AV |
1817 | if (dentry->d_inode != NULL) |
1818 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 1819 | |
24ac23ab | 1820 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1821 | if (status != 0) |
c6d00e63 | 1822 | goto err_opendata_put; |
1da177e4 | 1823 | |
24ac23ab | 1824 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1825 | status = PTR_ERR(state); |
1826 | if (IS_ERR(state)) | |
c6d00e63 | 1827 | goto err_opendata_put; |
0df5dd4a | 1828 | if (server->caps & NFS_CAP_POSIX_LOCK) |
8e469ebd | 1829 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); |
0ab64e0e TM |
1830 | |
1831 | if (opendata->o_arg.open_flags & O_EXCL) { | |
1832 | nfs4_exclusive_attrset(opendata, sattr); | |
1833 | ||
1834 | nfs_fattr_init(opendata->o_res.f_attr); | |
1835 | status = nfs4_do_setattr(state->inode, cred, | |
1836 | opendata->o_res.f_attr, sattr, | |
1837 | state); | |
1838 | if (status == 0) | |
1839 | nfs_setattr_update_inode(state->inode, sattr); | |
1840 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
1841 | } | |
c6d00e63 | 1842 | nfs4_opendata_put(opendata); |
1da177e4 | 1843 | nfs4_put_state_owner(sp); |
1da177e4 LT |
1844 | *res = state; |
1845 | return 0; | |
c6d00e63 TM |
1846 | err_opendata_put: |
1847 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
1848 | err_put_state_owner: |
1849 | nfs4_put_state_owner(sp); | |
1da177e4 | 1850 | out_err: |
1da177e4 LT |
1851 | *res = NULL; |
1852 | return status; | |
1853 | } | |
1854 | ||
1855 | ||
82a2c1b7 | 1856 | 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 |
1857 | { |
1858 | struct nfs4_exception exception = { }; | |
1859 | struct nfs4_state *res; | |
1860 | int status; | |
1861 | ||
1862 | do { | |
82a2c1b7 | 1863 | status = _nfs4_do_open(dir, dentry, fmode, flags, sattr, cred, &res); |
1da177e4 LT |
1864 | if (status == 0) |
1865 | break; | |
1866 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1867 | * book-keeping w.r.t. state-changing operations | |
1868 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1869 | * It is actually a sign of a bug on the client or on the server. | |
1870 | * | |
1871 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1872 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1873 | * have unhashed the old state_owner for us, and that we can |
1874 | * therefore safely retry using a new one. We should still warn | |
1875 | * the user though... | |
1876 | */ | |
1877 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 1878 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
1879 | " returned a bad sequence-id error!\n", |
1880 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1881 | exception.retry = 1; |
1882 | continue; | |
1883 | } | |
550f5747 TM |
1884 | /* |
1885 | * BAD_STATEID on OPEN means that the server cancelled our | |
1886 | * state before it received the OPEN_CONFIRM. | |
1887 | * Recover by retrying the request as per the discussion | |
1888 | * on Page 181 of RFC3530. | |
1889 | */ | |
1890 | if (status == -NFS4ERR_BAD_STATEID) { | |
1891 | exception.retry = 1; | |
1892 | continue; | |
1893 | } | |
aac00a8d TM |
1894 | if (status == -EAGAIN) { |
1895 | /* We must have found a delegation */ | |
1896 | exception.retry = 1; | |
1897 | continue; | |
1898 | } | |
1da177e4 LT |
1899 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1900 | status, &exception)); | |
1901 | } while (exception.retry); | |
1902 | return res; | |
1903 | } | |
1904 | ||
659bfcd6 TM |
1905 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1906 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1907 | struct nfs4_state *state) | |
1da177e4 | 1908 | { |
3e4f6290 | 1909 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1910 | struct nfs_setattrargs arg = { |
3e4f6290 | 1911 | .fh = NFS_FH(inode), |
1da177e4 LT |
1912 | .iap = sattr, |
1913 | .server = server, | |
1914 | .bitmask = server->attr_bitmask, | |
1915 | }; | |
1916 | struct nfs_setattrres res = { | |
1917 | .fattr = fattr, | |
1918 | .server = server, | |
1919 | }; | |
1920 | struct rpc_message msg = { | |
659bfcd6 TM |
1921 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
1922 | .rpc_argp = &arg, | |
1923 | .rpc_resp = &res, | |
1924 | .rpc_cred = cred, | |
1da177e4 | 1925 | }; |
26e976a8 | 1926 | unsigned long timestamp = jiffies; |
65e4308d | 1927 | int status; |
1da177e4 | 1928 | |
0e574af1 | 1929 | nfs_fattr_init(fattr); |
1da177e4 | 1930 | |
4fc8796d TM |
1931 | if (state != NULL) { |
1932 | nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, | |
1933 | current->files, current->tgid); | |
1934 | } else if (nfs4_copy_delegation_stateid(&arg.stateid, inode, | |
1935 | FMODE_WRITE)) { | |
3e4f6290 | 1936 | /* Use that stateid */ |
08e9eac4 | 1937 | } else |
f597c537 | 1938 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 1939 | |
7c513058 | 1940 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
1941 | if (status == 0 && state != NULL) |
1942 | renew_lease(server, timestamp); | |
65e4308d | 1943 | return status; |
1da177e4 LT |
1944 | } |
1945 | ||
659bfcd6 TM |
1946 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1947 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1948 | struct nfs4_state *state) | |
1da177e4 | 1949 | { |
3e4f6290 | 1950 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
1951 | struct nfs4_exception exception = { |
1952 | .state = state, | |
3114ea7a | 1953 | .inode = inode, |
a1d0b5ee | 1954 | }; |
1da177e4 LT |
1955 | int err; |
1956 | do { | |
451146be TM |
1957 | err = _nfs4_do_setattr(inode, cred, fattr, sattr, state); |
1958 | switch (err) { | |
1959 | case -NFS4ERR_OPENMODE: | |
1960 | if (state && !(state->state & FMODE_WRITE)) { | |
1961 | err = -EBADF; | |
1962 | if (sattr->ia_valid & ATTR_OPEN) | |
1963 | err = -EACCES; | |
1964 | goto out; | |
1965 | } | |
1966 | } | |
1967 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 1968 | } while (exception.retry); |
451146be | 1969 | out: |
1da177e4 LT |
1970 | return err; |
1971 | } | |
1972 | ||
1973 | struct nfs4_closedata { | |
1974 | struct inode *inode; | |
1975 | struct nfs4_state *state; | |
1976 | struct nfs_closeargs arg; | |
1977 | struct nfs_closeres res; | |
516a6af6 | 1978 | struct nfs_fattr fattr; |
26e976a8 | 1979 | unsigned long timestamp; |
f7e8917a FI |
1980 | bool roc; |
1981 | u32 roc_barrier; | |
1da177e4 LT |
1982 | }; |
1983 | ||
963d8fe5 | 1984 | static void nfs4_free_closedata(void *data) |
9512135d | 1985 | { |
963d8fe5 TM |
1986 | struct nfs4_closedata *calldata = data; |
1987 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 1988 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 1989 | |
f7e8917a FI |
1990 | if (calldata->roc) |
1991 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
1992 | nfs4_put_open_state(calldata->state); |
1993 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 1994 | nfs4_put_state_owner(sp); |
643168c2 | 1995 | nfs_sb_deactive(sb); |
9512135d TM |
1996 | kfree(calldata); |
1997 | } | |
1998 | ||
88069f77 TM |
1999 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
2000 | fmode_t fmode) | |
2001 | { | |
2002 | spin_lock(&state->owner->so_lock); | |
2003 | if (!(fmode & FMODE_READ)) | |
2004 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2005 | if (!(fmode & FMODE_WRITE)) | |
2006 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2007 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
2008 | spin_unlock(&state->owner->so_lock); | |
2009 | } | |
2010 | ||
963d8fe5 | 2011 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2012 | { |
963d8fe5 | 2013 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2014 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
2015 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
2016 | ||
a3ca5651 | 2017 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2018 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2019 | return; | |
1da177e4 LT |
2020 | /* hmm. we are done with the inode, and in the process of freeing |
2021 | * the state_owner. we keep this around to process errors | |
2022 | */ | |
1da177e4 LT |
2023 | switch (task->tk_status) { |
2024 | case 0: | |
f7e8917a FI |
2025 | if (calldata->roc) |
2026 | pnfs_roc_set_barrier(state->inode, | |
2027 | calldata->roc_barrier); | |
45328c35 | 2028 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 2029 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
2030 | nfs4_close_clear_stateid_flags(state, |
2031 | calldata->arg.fmode); | |
1da177e4 LT |
2032 | break; |
2033 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
2034 | case -NFS4ERR_OLD_STATEID: |
2035 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2036 | case -NFS4ERR_EXPIRED: |
dc0b027d | 2037 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2038 | break; |
1da177e4 | 2039 | default: |
72211dbe TM |
2040 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
2041 | rpc_restart_call_prepare(task); | |
1da177e4 | 2042 | } |
72211dbe | 2043 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2044 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2045 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2046 | } |
2047 | ||
4ce70ada | 2048 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2049 | { |
4ce70ada | 2050 | struct nfs4_closedata *calldata = data; |
9512135d | 2051 | struct nfs4_state *state = calldata->state; |
88069f77 | 2052 | int call_close = 0; |
9512135d | 2053 | |
a3ca5651 | 2054 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2055 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 2056 | return; |
003707c7 | 2057 | |
88069f77 TM |
2058 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
2059 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 2060 | spin_lock(&state->owner->so_lock); |
003707c7 | 2061 | /* Calculate the change in open mode */ |
e7616923 | 2062 | if (state->n_rdwr == 0) { |
003707c7 | 2063 | if (state->n_rdonly == 0) { |
88069f77 TM |
2064 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
2065 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2066 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
2067 | } |
2068 | if (state->n_wronly == 0) { | |
88069f77 TM |
2069 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
2070 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2071 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 2072 | } |
e7616923 | 2073 | } |
4cecb76f | 2074 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2075 | |
2076 | if (!call_close) { | |
963d8fe5 TM |
2077 | /* Note: exit _without_ calling nfs4_close_done */ |
2078 | task->tk_action = NULL; | |
a3ca5651 | 2079 | goto out; |
9512135d | 2080 | } |
88069f77 | 2081 | |
f7e8917a | 2082 | if (calldata->arg.fmode == 0) { |
88069f77 | 2083 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a FI |
2084 | if (calldata->roc && |
2085 | pnfs_roc_drain(calldata->inode, &calldata->roc_barrier)) { | |
2086 | rpc_sleep_on(&NFS_SERVER(calldata->inode)->roc_rpcwaitq, | |
2087 | task, NULL); | |
a3ca5651 | 2088 | goto out; |
f7e8917a FI |
2089 | } |
2090 | } | |
88069f77 | 2091 | |
516a6af6 | 2092 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2093 | calldata->timestamp = jiffies; |
035168ab | 2094 | if (nfs4_setup_sequence(NFS_SERVER(calldata->inode), |
9d12b216 TM |
2095 | &calldata->arg.seq_args, |
2096 | &calldata->res.seq_res, | |
2097 | task)) | |
a3ca5651 | 2098 | goto out; |
5138fde0 | 2099 | rpc_call_start(task); |
a3ca5651 CL |
2100 | out: |
2101 | dprintk("%s: done!\n", __func__); | |
1da177e4 LT |
2102 | } |
2103 | ||
963d8fe5 | 2104 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2105 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2106 | .rpc_call_done = nfs4_close_done, |
2107 | .rpc_release = nfs4_free_closedata, | |
2108 | }; | |
2109 | ||
1da177e4 LT |
2110 | /* |
2111 | * It is possible for data to be read/written from a mem-mapped file | |
2112 | * after the sys_close call (which hits the vfs layer as a flush). | |
2113 | * This means that we can't safely call nfsv4 close on a file until | |
2114 | * the inode is cleared. This in turn means that we are not good | |
2115 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2116 | * share state even when we are done with one of the three share | |
2117 | * stateid's in the inode. | |
2118 | * | |
2119 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2120 | */ | |
643168c2 | 2121 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait, bool roc) |
1da177e4 | 2122 | { |
4a35bd41 | 2123 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2124 | struct nfs4_closedata *calldata; |
b39e625b TM |
2125 | struct nfs4_state_owner *sp = state->owner; |
2126 | struct rpc_task *task; | |
5138fde0 TM |
2127 | struct rpc_message msg = { |
2128 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2129 | .rpc_cred = state->owner->so_cred, | |
2130 | }; | |
c970aa85 TM |
2131 | struct rpc_task_setup task_setup_data = { |
2132 | .rpc_client = server->client, | |
5138fde0 | 2133 | .rpc_message = &msg, |
c970aa85 | 2134 | .callback_ops = &nfs4_close_ops, |
101070ca | 2135 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2136 | .flags = RPC_TASK_ASYNC, |
2137 | }; | |
9512135d | 2138 | int status = -ENOMEM; |
1da177e4 | 2139 | |
8535b2be | 2140 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2141 | if (calldata == NULL) |
9512135d | 2142 | goto out; |
9d12b216 | 2143 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2144 | calldata->inode = state->inode; |
1da177e4 | 2145 | calldata->state = state; |
4a35bd41 | 2146 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2147 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2148 | /* Serialization for the sequence id */ |
8535b2be | 2149 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2150 | if (calldata->arg.seqid == NULL) |
2151 | goto out_free_calldata; | |
dc0b027d | 2152 | calldata->arg.fmode = 0; |
a65318bf | 2153 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2154 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2155 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2156 | calldata->res.server = server; |
f7e8917a | 2157 | calldata->roc = roc; |
643168c2 | 2158 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2159 | |
1174dd1f TM |
2160 | msg.rpc_argp = &calldata->arg; |
2161 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2162 | task_setup_data.callback_data = calldata; |
2163 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2164 | if (IS_ERR(task)) |
2165 | return PTR_ERR(task); | |
a49c3c77 TM |
2166 | status = 0; |
2167 | if (wait) | |
2168 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2169 | rpc_put_task(task); |
a49c3c77 | 2170 | return status; |
9512135d TM |
2171 | out_free_calldata: |
2172 | kfree(calldata); | |
2173 | out: | |
f7e8917a FI |
2174 | if (roc) |
2175 | pnfs_roc_release(state->inode); | |
b39e625b TM |
2176 | nfs4_put_open_state(state); |
2177 | nfs4_put_state_owner(sp); | |
9512135d | 2178 | return status; |
1da177e4 LT |
2179 | } |
2180 | ||
2b484297 | 2181 | static struct inode * |
cd9a1c0e | 2182 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2183 | { |
1da177e4 | 2184 | struct nfs4_state *state; |
1da177e4 | 2185 | |
565277f6 | 2186 | /* Protect against concurrent sillydeletes */ |
3d4ff43d | 2187 | state = nfs4_do_open(dir, ctx->dentry, ctx->mode, open_flags, attr, ctx->cred); |
f46e0bd3 TM |
2188 | if (IS_ERR(state)) |
2189 | return ERR_CAST(state); | |
cd9a1c0e | 2190 | ctx->state = state; |
f46e0bd3 | 2191 | return igrab(state->inode); |
1da177e4 LT |
2192 | } |
2193 | ||
1185a552 | 2194 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2195 | { |
2196 | if (ctx->state == NULL) | |
2197 | return; | |
2198 | if (is_sync) | |
643168c2 | 2199 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2200 | else |
643168c2 | 2201 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2202 | } |
1da177e4 LT |
2203 | |
2204 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2205 | { | |
43652ad5 BH |
2206 | struct nfs4_server_caps_arg args = { |
2207 | .fhandle = fhandle, | |
2208 | }; | |
1da177e4 LT |
2209 | struct nfs4_server_caps_res res = {}; |
2210 | struct rpc_message msg = { | |
2211 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2212 | .rpc_argp = &args, |
1da177e4 LT |
2213 | .rpc_resp = &res, |
2214 | }; | |
2215 | int status; | |
2216 | ||
7c513058 | 2217 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2218 | if (status == 0) { |
2219 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2220 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2221 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2222 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2223 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2224 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2225 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2226 | server->caps |= NFS_CAP_ACLS; | |
2227 | if (res.has_links != 0) | |
2228 | server->caps |= NFS_CAP_HARDLINKS; | |
2229 | if (res.has_symlinks != 0) | |
2230 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2231 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2232 | server->caps |= NFS_CAP_FILEID; | |
2233 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2234 | server->caps |= NFS_CAP_MODE; | |
2235 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2236 | server->caps |= NFS_CAP_NLINK; | |
2237 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2238 | server->caps |= NFS_CAP_OWNER; | |
2239 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2240 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2241 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2242 | server->caps |= NFS_CAP_ATIME; | |
2243 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2244 | server->caps |= NFS_CAP_CTIME; | |
2245 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2246 | server->caps |= NFS_CAP_MTIME; | |
2247 | ||
a65318bf TM |
2248 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2249 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2250 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 | 2251 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 2252 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 2253 | } |
cccef3b9 | 2254 | |
1da177e4 LT |
2255 | return status; |
2256 | } | |
2257 | ||
55a97593 | 2258 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2259 | { |
2260 | struct nfs4_exception exception = { }; | |
2261 | int err; | |
2262 | do { | |
2263 | err = nfs4_handle_exception(server, | |
2264 | _nfs4_server_capabilities(server, fhandle), | |
2265 | &exception); | |
2266 | } while (exception.retry); | |
2267 | return err; | |
2268 | } | |
2269 | ||
2270 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2271 | struct nfs_fsinfo *info) | |
2272 | { | |
1da177e4 LT |
2273 | struct nfs4_lookup_root_arg args = { |
2274 | .bitmask = nfs4_fattr_bitmap, | |
2275 | }; | |
2276 | struct nfs4_lookup_res res = { | |
2277 | .server = server, | |
0e574af1 | 2278 | .fattr = info->fattr, |
1da177e4 LT |
2279 | .fh = fhandle, |
2280 | }; | |
2281 | struct rpc_message msg = { | |
2282 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2283 | .rpc_argp = &args, | |
2284 | .rpc_resp = &res, | |
2285 | }; | |
008f55d0 | 2286 | |
0e574af1 | 2287 | nfs_fattr_init(info->fattr); |
7c513058 | 2288 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2289 | } |
2290 | ||
2291 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2292 | struct nfs_fsinfo *info) | |
2293 | { | |
2294 | struct nfs4_exception exception = { }; | |
2295 | int err; | |
2296 | do { | |
fb8a5ba8 BS |
2297 | err = _nfs4_lookup_root(server, fhandle, info); |
2298 | switch (err) { | |
2299 | case 0: | |
2300 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 2301 | goto out; |
fb8a5ba8 BS |
2302 | default: |
2303 | err = nfs4_handle_exception(server, err, &exception); | |
2304 | } | |
1da177e4 | 2305 | } while (exception.retry); |
05e9cfb4 | 2306 | out: |
1da177e4 LT |
2307 | return err; |
2308 | } | |
2309 | ||
8f70e95f BS |
2310 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2311 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2312 | { | |
2313 | struct rpc_auth *auth; | |
2314 | int ret; | |
2315 | ||
2316 | auth = rpcauth_create(flavor, server->client); | |
2317 | if (!auth) { | |
2318 | ret = -EIO; | |
2319 | goto out; | |
2320 | } | |
2321 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2322 | out: |
2323 | return ret; | |
2324 | } | |
2325 | ||
801a16dc | 2326 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2327 | struct nfs_fsinfo *info) |
1da177e4 | 2328 | { |
8f70e95f | 2329 | int i, len, status = 0; |
0fabee24 | 2330 | rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS]; |
1da177e4 | 2331 | |
801a16dc BS |
2332 | len = gss_mech_list_pseudoflavors(&flav_array[0]); |
2333 | flav_array[len] = RPC_AUTH_NULL; | |
2334 | len += 1; | |
8f70e95f BS |
2335 | |
2336 | for (i = 0; i < len; i++) { | |
2337 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); | |
fb8a5ba8 | 2338 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2339 | continue; |
2340 | break; | |
8f70e95f | 2341 | } |
fb8a5ba8 BS |
2342 | /* |
2343 | * -EACCESS could mean that the user doesn't have correct permissions | |
2344 | * to access the mount. It could also mean that we tried to mount | |
2345 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2346 | * existing mount programs don't handle -EACCES very well so it should | |
2347 | * be mapped to -EPERM instead. | |
2348 | */ | |
2349 | if (status == -EACCES) | |
2350 | status = -EPERM; | |
801a16dc BS |
2351 | return status; |
2352 | } | |
2353 | ||
2354 | /* | |
2355 | * get the file handle for the "/" directory on the server | |
2356 | */ | |
2357 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2358 | struct nfs_fsinfo *info) | |
2359 | { | |
fca78d6d | 2360 | int minor_version = server->nfs_client->cl_minorversion; |
801a16dc | 2361 | int status = nfs4_lookup_root(server, fhandle, info); |
fb8a5ba8 BS |
2362 | if ((status == -NFS4ERR_WRONGSEC) && !(server->flags & NFS_MOUNT_SECFLAVOUR)) |
2363 | /* | |
2364 | * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM | |
2365 | * by nfs4_map_errors() as this function exits. | |
2366 | */ | |
fca78d6d | 2367 | status = nfs_v4_minor_ops[minor_version]->find_root_sec(server, fhandle, info); |
1da177e4 LT |
2368 | if (status == 0) |
2369 | status = nfs4_server_capabilities(server, fhandle); | |
2370 | if (status == 0) | |
2371 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2372 | return nfs4_map_errors(status); |
1da177e4 LT |
2373 | } |
2374 | ||
6b97fd3d MN |
2375 | /* |
2376 | * Get locations and (maybe) other attributes of a referral. | |
2377 | * Note that we'll actually follow the referral later when | |
2378 | * we detect fsid mismatch in inode revalidation | |
2379 | */ | |
f05d147f BS |
2380 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
2381 | const struct qstr *name, struct nfs_fattr *fattr, | |
2382 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
2383 | { |
2384 | int status = -ENOMEM; | |
2385 | struct page *page = NULL; | |
2386 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2387 | |
2388 | page = alloc_page(GFP_KERNEL); | |
2389 | if (page == NULL) | |
2390 | goto out; | |
2391 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2392 | if (locations == NULL) | |
2393 | goto out; | |
2394 | ||
f05d147f | 2395 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
2396 | if (status != 0) |
2397 | goto out; | |
2398 | /* Make sure server returned a different fsid for the referral */ | |
2399 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2400 | dprintk("%s: server did not return a different fsid for" |
2401 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2402 | status = -EIO; |
2403 | goto out; | |
2404 | } | |
533eb461 AA |
2405 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2406 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2407 | |
533eb461 | 2408 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2409 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2410 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2411 | out: | |
2412 | if (page) | |
2413 | __free_page(page); | |
5d7ca35a | 2414 | kfree(locations); |
6b97fd3d MN |
2415 | return status; |
2416 | } | |
2417 | ||
1da177e4 LT |
2418 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2419 | { | |
2420 | struct nfs4_getattr_arg args = { | |
2421 | .fh = fhandle, | |
2422 | .bitmask = server->attr_bitmask, | |
2423 | }; | |
2424 | struct nfs4_getattr_res res = { | |
2425 | .fattr = fattr, | |
2426 | .server = server, | |
2427 | }; | |
2428 | struct rpc_message msg = { | |
2429 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2430 | .rpc_argp = &args, | |
2431 | .rpc_resp = &res, | |
2432 | }; | |
2433 | ||
0e574af1 | 2434 | nfs_fattr_init(fattr); |
7c513058 | 2435 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2436 | } |
2437 | ||
2438 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2439 | { | |
2440 | struct nfs4_exception exception = { }; | |
2441 | int err; | |
2442 | do { | |
2443 | err = nfs4_handle_exception(server, | |
2444 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2445 | &exception); | |
2446 | } while (exception.retry); | |
2447 | return err; | |
2448 | } | |
2449 | ||
2450 | /* | |
2451 | * The file is not closed if it is opened due to the a request to change | |
2452 | * the size of the file. The open call will not be needed once the | |
2453 | * VFS layer lookup-intents are implemented. | |
2454 | * | |
2455 | * Close is called when the inode is destroyed. | |
2456 | * If we haven't opened the file for O_WRONLY, we | |
2457 | * need to in the size_change case to obtain a stateid. | |
2458 | * | |
2459 | * Got race? | |
2460 | * Because OPEN is always done by name in nfsv4, it is | |
2461 | * possible that we opened a different file by the same | |
2462 | * name. We can recognize this race condition, but we | |
2463 | * can't do anything about it besides returning an error. | |
2464 | * | |
2465 | * This will be fixed with VFS changes (lookup-intent). | |
2466 | */ | |
2467 | static int | |
2468 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2469 | struct iattr *sattr) | |
2470 | { | |
08e9eac4 | 2471 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2472 | struct rpc_cred *cred = NULL; |
d530838b | 2473 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2474 | int status; |
2475 | ||
8a1636c4 BH |
2476 | if (pnfs_ld_layoutret_on_setattr(inode)) |
2477 | pnfs_return_layout(inode); | |
2478 | ||
0e574af1 | 2479 | nfs_fattr_init(fattr); |
1da177e4 | 2480 | |
d530838b | 2481 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2482 | if (sattr->ia_valid & ATTR_FILE) { |
2483 | struct nfs_open_context *ctx; | |
2484 | ||
2485 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2486 | if (ctx) { |
2487 | cred = ctx->cred; | |
2488 | state = ctx->state; | |
2489 | } | |
659bfcd6 | 2490 | } |
08e9eac4 | 2491 | |
536e43d1 TM |
2492 | /* Deal with open(O_TRUNC) */ |
2493 | if (sattr->ia_valid & ATTR_OPEN) | |
2494 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME|ATTR_OPEN); | |
2495 | ||
659bfcd6 | 2496 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2497 | if (status == 0) |
2498 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2499 | return status; |
2500 | } | |
2501 | ||
0c2e53f1 TM |
2502 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
2503 | const struct qstr *name, struct nfs_fh *fhandle, | |
2504 | struct nfs_fattr *fattr) | |
2b3de441 | 2505 | { |
0c2e53f1 | 2506 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
2507 | int status; |
2508 | struct nfs4_lookup_arg args = { | |
2509 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 2510 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
2511 | .name = name, |
2512 | }; | |
2513 | struct nfs4_lookup_res res = { | |
2514 | .server = server, | |
2515 | .fattr = fattr, | |
2516 | .fh = fhandle, | |
2517 | }; | |
2518 | struct rpc_message msg = { | |
2519 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2520 | .rpc_argp = &args, | |
2521 | .rpc_resp = &res, | |
2522 | }; | |
2523 | ||
2524 | nfs_fattr_init(fattr); | |
2525 | ||
1da177e4 | 2526 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 2527 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2528 | dprintk("NFS reply lookup: %d\n", status); |
2529 | return status; | |
2530 | } | |
2531 | ||
72de53ec | 2532 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 2533 | { |
7ebb9315 | 2534 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 2535 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
2536 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
2537 | fattr->nlink = 2; | |
2538 | } | |
2539 | ||
72de53ec BS |
2540 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
2541 | struct qstr *name, struct nfs_fh *fhandle, | |
2542 | struct nfs_fattr *fattr) | |
1da177e4 LT |
2543 | { |
2544 | struct nfs4_exception exception = { }; | |
72de53ec | 2545 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
2546 | int err; |
2547 | do { | |
72de53ec BS |
2548 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr); |
2549 | switch (err) { | |
08ef7bd3 | 2550 | case -NFS4ERR_BADNAME: |
72de53ec BS |
2551 | err = -ENOENT; |
2552 | goto out; | |
0c2e53f1 | 2553 | case -NFS4ERR_MOVED: |
f05d147f | 2554 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
72de53ec | 2555 | goto out; |
0c2e53f1 | 2556 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
2557 | err = -EPERM; |
2558 | if (client != *clnt) | |
2559 | goto out; | |
2560 | ||
2561 | client = nfs4_create_sec_client(client, dir, name); | |
2562 | if (IS_ERR(client)) | |
2563 | return PTR_ERR(client); | |
2564 | ||
2565 | exception.retry = 1; | |
2566 | break; | |
2567 | default: | |
2568 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 2569 | } |
1da177e4 | 2570 | } while (exception.retry); |
72de53ec BS |
2571 | |
2572 | out: | |
2573 | if (err == 0) | |
2574 | *clnt = client; | |
2575 | else if (client != *clnt) | |
2576 | rpc_shutdown_client(client); | |
2577 | ||
1da177e4 LT |
2578 | return err; |
2579 | } | |
2580 | ||
80a16b21 | 2581 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, |
72de53ec BS |
2582 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2583 | { | |
2584 | int status; | |
2585 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
2586 | ||
2587 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2588 | if (client != NFS_CLIENT(dir)) { | |
2589 | rpc_shutdown_client(client); | |
2590 | nfs_fixup_secinfo_attributes(fattr); | |
2591 | } | |
2592 | return status; | |
2593 | } | |
2594 | ||
f05d147f BS |
2595 | struct rpc_clnt * |
2596 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, | |
2597 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2598 | { | |
2599 | int status; | |
2600 | struct rpc_clnt *client = rpc_clone_client(NFS_CLIENT(dir)); | |
2601 | ||
2602 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2603 | if (status < 0) { | |
2604 | rpc_shutdown_client(client); | |
2605 | return ERR_PTR(status); | |
2606 | } | |
2607 | return client; | |
2608 | } | |
2609 | ||
1da177e4 LT |
2610 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
2611 | { | |
76b32999 | 2612 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2613 | struct nfs4_accessargs args = { |
2614 | .fh = NFS_FH(inode), | |
a4980e78 | 2615 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
2616 | }; |
2617 | struct nfs4_accessres res = { | |
2618 | .server = server, | |
1da177e4 | 2619 | }; |
1da177e4 LT |
2620 | struct rpc_message msg = { |
2621 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2622 | .rpc_argp = &args, | |
2623 | .rpc_resp = &res, | |
2624 | .rpc_cred = entry->cred, | |
2625 | }; | |
2626 | int mode = entry->mask; | |
2627 | int status; | |
2628 | ||
2629 | /* | |
2630 | * Determine which access bits we want to ask for... | |
2631 | */ | |
2632 | if (mode & MAY_READ) | |
2633 | args.access |= NFS4_ACCESS_READ; | |
2634 | if (S_ISDIR(inode->i_mode)) { | |
2635 | if (mode & MAY_WRITE) | |
2636 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2637 | if (mode & MAY_EXEC) | |
2638 | args.access |= NFS4_ACCESS_LOOKUP; | |
2639 | } else { | |
2640 | if (mode & MAY_WRITE) | |
2641 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2642 | if (mode & MAY_EXEC) | |
2643 | args.access |= NFS4_ACCESS_EXECUTE; | |
2644 | } | |
c407d41a TM |
2645 | |
2646 | res.fattr = nfs_alloc_fattr(); | |
2647 | if (res.fattr == NULL) | |
2648 | return -ENOMEM; | |
2649 | ||
7c513058 | 2650 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2651 | if (!status) { |
2652 | entry->mask = 0; | |
2653 | if (res.access & NFS4_ACCESS_READ) | |
2654 | entry->mask |= MAY_READ; | |
2655 | if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE)) | |
2656 | entry->mask |= MAY_WRITE; | |
2657 | if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE)) | |
2658 | entry->mask |= MAY_EXEC; | |
c407d41a | 2659 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2660 | } |
c407d41a | 2661 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2662 | return status; |
2663 | } | |
2664 | ||
2665 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2666 | { | |
2667 | struct nfs4_exception exception = { }; | |
2668 | int err; | |
2669 | do { | |
2670 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2671 | _nfs4_proc_access(inode, entry), | |
2672 | &exception); | |
2673 | } while (exception.retry); | |
2674 | return err; | |
2675 | } | |
2676 | ||
2677 | /* | |
2678 | * TODO: For the time being, we don't try to get any attributes | |
2679 | * along with any of the zero-copy operations READ, READDIR, | |
2680 | * READLINK, WRITE. | |
2681 | * | |
2682 | * In the case of the first three, we want to put the GETATTR | |
2683 | * after the read-type operation -- this is because it is hard | |
2684 | * to predict the length of a GETATTR response in v4, and thus | |
2685 | * align the READ data correctly. This means that the GETATTR | |
2686 | * may end up partially falling into the page cache, and we should | |
2687 | * shift it into the 'tail' of the xdr_buf before processing. | |
2688 | * To do this efficiently, we need to know the total length | |
2689 | * of data received, which doesn't seem to be available outside | |
2690 | * of the RPC layer. | |
2691 | * | |
2692 | * In the case of WRITE, we also want to put the GETATTR after | |
2693 | * the operation -- in this case because we want to make sure | |
2694 | * we get the post-operation mtime and size. This means that | |
2695 | * we can't use xdr_encode_pages() as written: we need a variant | |
2696 | * of it which would leave room in the 'tail' iovec. | |
2697 | * | |
2698 | * Both of these changes to the XDR layer would in fact be quite | |
2699 | * minor, but I decided to leave them for a subsequent patch. | |
2700 | */ | |
2701 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2702 | unsigned int pgbase, unsigned int pglen) | |
2703 | { | |
2704 | struct nfs4_readlink args = { | |
2705 | .fh = NFS_FH(inode), | |
2706 | .pgbase = pgbase, | |
2707 | .pglen = pglen, | |
2708 | .pages = &page, | |
2709 | }; | |
f50c7000 | 2710 | struct nfs4_readlink_res res; |
1da177e4 LT |
2711 | struct rpc_message msg = { |
2712 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2713 | .rpc_argp = &args, | |
f50c7000 | 2714 | .rpc_resp = &res, |
1da177e4 LT |
2715 | }; |
2716 | ||
7c513058 | 2717 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2718 | } |
2719 | ||
2720 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2721 | unsigned int pgbase, unsigned int pglen) | |
2722 | { | |
2723 | struct nfs4_exception exception = { }; | |
2724 | int err; | |
2725 | do { | |
2726 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2727 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2728 | &exception); | |
2729 | } while (exception.retry); | |
2730 | return err; | |
2731 | } | |
2732 | ||
1da177e4 LT |
2733 | /* |
2734 | * Got race? | |
2735 | * We will need to arrange for the VFS layer to provide an atomic open. | |
2736 | * Until then, this create/open method is prone to inefficiency and race | |
2737 | * conditions due to the lookup, create, and open VFS calls from sys_open() | |
2738 | * placed on the wire. | |
2739 | * | |
2740 | * Given the above sorry state of affairs, I'm simply sending an OPEN. | |
2741 | * The file will be opened again in the subsequent VFS open call | |
2742 | * (nfs4_proc_file_open). | |
2743 | * | |
2744 | * The open for read will just hang around to be used by any process that | |
2745 | * opens the file O_RDONLY. This will all be resolved with the VFS changes. | |
2746 | */ | |
2747 | ||
2748 | static int | |
2749 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
c0204fd2 | 2750 | int flags, struct nfs_open_context *ctx) |
1da177e4 | 2751 | { |
82a2c1b7 | 2752 | struct dentry *de = dentry; |
1da177e4 | 2753 | struct nfs4_state *state; |
c0204fd2 TM |
2754 | struct rpc_cred *cred = NULL; |
2755 | fmode_t fmode = 0; | |
1da177e4 LT |
2756 | int status = 0; |
2757 | ||
c0204fd2 TM |
2758 | if (ctx != NULL) { |
2759 | cred = ctx->cred; | |
3d4ff43d | 2760 | de = ctx->dentry; |
c0204fd2 | 2761 | fmode = ctx->mode; |
1da177e4 | 2762 | } |
a8a5da99 | 2763 | sattr->ia_mode &= ~current_umask(); |
82a2c1b7 | 2764 | state = nfs4_do_open(dir, de, fmode, flags, sattr, cred); |
d4d9cdcb | 2765 | d_drop(dentry); |
1da177e4 LT |
2766 | if (IS_ERR(state)) { |
2767 | status = PTR_ERR(state); | |
c0204fd2 | 2768 | goto out; |
1da177e4 | 2769 | } |
d4d9cdcb | 2770 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2771 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
c0204fd2 TM |
2772 | if (ctx != NULL) |
2773 | ctx->state = state; | |
02a913a7 | 2774 | else |
643168c2 | 2775 | nfs4_close_sync(state, fmode); |
1da177e4 LT |
2776 | out: |
2777 | return status; | |
2778 | } | |
2779 | ||
2780 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2781 | { | |
16e42959 | 2782 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2783 | struct nfs_removeargs args = { |
1da177e4 | 2784 | .fh = NFS_FH(dir), |
4fdc17b2 TM |
2785 | .name.len = name->len, |
2786 | .name.name = name->name, | |
16e42959 TM |
2787 | .bitmask = server->attr_bitmask, |
2788 | }; | |
4fdc17b2 | 2789 | struct nfs_removeres res = { |
16e42959 | 2790 | .server = server, |
1da177e4 | 2791 | }; |
1da177e4 | 2792 | struct rpc_message msg = { |
4fdc17b2 TM |
2793 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
2794 | .rpc_argp = &args, | |
2795 | .rpc_resp = &res, | |
1da177e4 | 2796 | }; |
d346890b TM |
2797 | int status = -ENOMEM; |
2798 | ||
2799 | res.dir_attr = nfs_alloc_fattr(); | |
2800 | if (res.dir_attr == NULL) | |
2801 | goto out; | |
1da177e4 | 2802 | |
7c513058 | 2803 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
16e42959 TM |
2804 | if (status == 0) { |
2805 | update_changeattr(dir, &res.cinfo); | |
d346890b | 2806 | nfs_post_op_update_inode(dir, res.dir_attr); |
16e42959 | 2807 | } |
d346890b TM |
2808 | nfs_free_fattr(res.dir_attr); |
2809 | out: | |
1da177e4 LT |
2810 | return status; |
2811 | } | |
2812 | ||
2813 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2814 | { | |
2815 | struct nfs4_exception exception = { }; | |
2816 | int err; | |
2817 | do { | |
2818 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2819 | _nfs4_proc_remove(dir, name), | |
2820 | &exception); | |
2821 | } while (exception.retry); | |
2822 | return err; | |
2823 | } | |
2824 | ||
e4eff1a6 | 2825 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 2826 | { |
e4eff1a6 TM |
2827 | struct nfs_server *server = NFS_SERVER(dir); |
2828 | struct nfs_removeargs *args = msg->rpc_argp; | |
2829 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 2830 | |
a65318bf | 2831 | args->bitmask = server->cache_consistency_bitmask; |
e4eff1a6 | 2832 | res->server = server; |
1da177e4 | 2833 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
9d12b216 | 2834 | nfs41_init_sequence(&args->seq_args, &res->seq_res, 1); |
1da177e4 LT |
2835 | } |
2836 | ||
34e137cc BS |
2837 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
2838 | { | |
2839 | if (nfs4_setup_sequence(NFS_SERVER(data->dir), | |
2840 | &data->args.seq_args, | |
2841 | &data->res.seq_res, | |
2842 | task)) | |
2843 | return; | |
2844 | rpc_call_start(task); | |
1da177e4 LT |
2845 | } |
2846 | ||
e4eff1a6 | 2847 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 2848 | { |
e4eff1a6 TM |
2849 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
2850 | ||
14516c3a TM |
2851 | if (!nfs4_sequence_done(task, &res->seq_res)) |
2852 | return 0; | |
9e33bed5 | 2853 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
2854 | return 0; |
2855 | update_changeattr(dir, &res->cinfo); | |
d346890b | 2856 | nfs_post_op_update_inode(dir, res->dir_attr); |
e4eff1a6 | 2857 | return 1; |
1da177e4 LT |
2858 | } |
2859 | ||
d3d4152a JL |
2860 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
2861 | { | |
2862 | struct nfs_server *server = NFS_SERVER(dir); | |
2863 | struct nfs_renameargs *arg = msg->rpc_argp; | |
2864 | struct nfs_renameres *res = msg->rpc_resp; | |
2865 | ||
2866 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
2867 | arg->bitmask = server->attr_bitmask; | |
2868 | res->server = server; | |
9d12b216 | 2869 | nfs41_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
2870 | } |
2871 | ||
c6bfa1a1 BS |
2872 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
2873 | { | |
2874 | if (nfs4_setup_sequence(NFS_SERVER(data->old_dir), | |
2875 | &data->args.seq_args, | |
2876 | &data->res.seq_res, | |
2877 | task)) | |
2878 | return; | |
2879 | rpc_call_start(task); | |
d3d4152a JL |
2880 | } |
2881 | ||
2882 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
2883 | struct inode *new_dir) | |
2884 | { | |
2885 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
2886 | ||
2887 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
2888 | return 0; | |
2889 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
2890 | return 0; | |
2891 | ||
2892 | update_changeattr(old_dir, &res->old_cinfo); | |
2893 | nfs_post_op_update_inode(old_dir, res->old_fattr); | |
2894 | update_changeattr(new_dir, &res->new_cinfo); | |
2895 | nfs_post_op_update_inode(new_dir, res->new_fattr); | |
2896 | return 1; | |
2897 | } | |
2898 | ||
1da177e4 LT |
2899 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
2900 | struct inode *new_dir, struct qstr *new_name) | |
2901 | { | |
6caf2c82 | 2902 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 2903 | struct nfs_renameargs arg = { |
1da177e4 LT |
2904 | .old_dir = NFS_FH(old_dir), |
2905 | .new_dir = NFS_FH(new_dir), | |
2906 | .old_name = old_name, | |
2907 | .new_name = new_name, | |
6caf2c82 TM |
2908 | .bitmask = server->attr_bitmask, |
2909 | }; | |
e8582a8b | 2910 | struct nfs_renameres res = { |
6caf2c82 | 2911 | .server = server, |
1da177e4 | 2912 | }; |
1da177e4 LT |
2913 | struct rpc_message msg = { |
2914 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
2915 | .rpc_argp = &arg, | |
2916 | .rpc_resp = &res, | |
2917 | }; | |
011fff72 | 2918 | int status = -ENOMEM; |
1da177e4 | 2919 | |
011fff72 TM |
2920 | res.old_fattr = nfs_alloc_fattr(); |
2921 | res.new_fattr = nfs_alloc_fattr(); | |
2922 | if (res.old_fattr == NULL || res.new_fattr == NULL) | |
2923 | goto out; | |
1da177e4 | 2924 | |
7c513058 | 2925 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
2926 | if (!status) { |
2927 | update_changeattr(old_dir, &res.old_cinfo); | |
6caf2c82 | 2928 | nfs_post_op_update_inode(old_dir, res.old_fattr); |
1da177e4 | 2929 | update_changeattr(new_dir, &res.new_cinfo); |
6caf2c82 | 2930 | nfs_post_op_update_inode(new_dir, res.new_fattr); |
1da177e4 | 2931 | } |
011fff72 TM |
2932 | out: |
2933 | nfs_free_fattr(res.new_fattr); | |
2934 | nfs_free_fattr(res.old_fattr); | |
1da177e4 LT |
2935 | return status; |
2936 | } | |
2937 | ||
2938 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2939 | struct inode *new_dir, struct qstr *new_name) | |
2940 | { | |
2941 | struct nfs4_exception exception = { }; | |
2942 | int err; | |
2943 | do { | |
2944 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
2945 | _nfs4_proc_rename(old_dir, old_name, | |
2946 | new_dir, new_name), | |
2947 | &exception); | |
2948 | } while (exception.retry); | |
2949 | return err; | |
2950 | } | |
2951 | ||
2952 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2953 | { | |
91ba2eee | 2954 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2955 | struct nfs4_link_arg arg = { |
2956 | .fh = NFS_FH(inode), | |
2957 | .dir_fh = NFS_FH(dir), | |
2958 | .name = name, | |
91ba2eee TM |
2959 | .bitmask = server->attr_bitmask, |
2960 | }; | |
91ba2eee TM |
2961 | struct nfs4_link_res res = { |
2962 | .server = server, | |
1da177e4 | 2963 | }; |
1da177e4 LT |
2964 | struct rpc_message msg = { |
2965 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
2966 | .rpc_argp = &arg, | |
91ba2eee | 2967 | .rpc_resp = &res, |
1da177e4 | 2968 | }; |
136f2627 TM |
2969 | int status = -ENOMEM; |
2970 | ||
2971 | res.fattr = nfs_alloc_fattr(); | |
2972 | res.dir_attr = nfs_alloc_fattr(); | |
2973 | if (res.fattr == NULL || res.dir_attr == NULL) | |
2974 | goto out; | |
1da177e4 | 2975 | |
7c513058 | 2976 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
2977 | if (!status) { |
2978 | update_changeattr(dir, &res.cinfo); | |
2979 | nfs_post_op_update_inode(dir, res.dir_attr); | |
73a3d07c | 2980 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 2981 | } |
136f2627 TM |
2982 | out: |
2983 | nfs_free_fattr(res.dir_attr); | |
2984 | nfs_free_fattr(res.fattr); | |
1da177e4 LT |
2985 | return status; |
2986 | } | |
2987 | ||
2988 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2989 | { | |
2990 | struct nfs4_exception exception = { }; | |
2991 | int err; | |
2992 | do { | |
2993 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2994 | _nfs4_proc_link(inode, dir, name), | |
2995 | &exception); | |
2996 | } while (exception.retry); | |
2997 | return err; | |
2998 | } | |
2999 | ||
57dc9a57 TM |
3000 | struct nfs4_createdata { |
3001 | struct rpc_message msg; | |
3002 | struct nfs4_create_arg arg; | |
3003 | struct nfs4_create_res res; | |
3004 | struct nfs_fh fh; | |
3005 | struct nfs_fattr fattr; | |
3006 | struct nfs_fattr dir_fattr; | |
3007 | }; | |
3008 | ||
3009 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
3010 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
3011 | { | |
3012 | struct nfs4_createdata *data; | |
3013 | ||
3014 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3015 | if (data != NULL) { | |
3016 | struct nfs_server *server = NFS_SERVER(dir); | |
3017 | ||
3018 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
3019 | data->msg.rpc_argp = &data->arg; | |
3020 | data->msg.rpc_resp = &data->res; | |
3021 | data->arg.dir_fh = NFS_FH(dir); | |
3022 | data->arg.server = server; | |
3023 | data->arg.name = name; | |
3024 | data->arg.attrs = sattr; | |
3025 | data->arg.ftype = ftype; | |
3026 | data->arg.bitmask = server->attr_bitmask; | |
3027 | data->res.server = server; | |
3028 | data->res.fh = &data->fh; | |
3029 | data->res.fattr = &data->fattr; | |
3030 | data->res.dir_fattr = &data->dir_fattr; | |
3031 | nfs_fattr_init(data->res.fattr); | |
3032 | nfs_fattr_init(data->res.dir_fattr); | |
3033 | } | |
3034 | return data; | |
3035 | } | |
3036 | ||
3037 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3038 | { | |
7c513058 | 3039 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3040 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3041 | if (status == 0) { |
3042 | update_changeattr(dir, &data->res.dir_cinfo); | |
3043 | nfs_post_op_update_inode(dir, data->res.dir_fattr); | |
3044 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); | |
3045 | } | |
3046 | return status; | |
3047 | } | |
3048 | ||
3049 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3050 | { | |
3051 | kfree(data); | |
3052 | } | |
3053 | ||
4f390c15 | 3054 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3055 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 3056 | { |
57dc9a57 TM |
3057 | struct nfs4_createdata *data; |
3058 | int status = -ENAMETOOLONG; | |
1da177e4 | 3059 | |
94a6d753 | 3060 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 3061 | goto out; |
4f390c15 | 3062 | |
57dc9a57 TM |
3063 | status = -ENOMEM; |
3064 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
3065 | if (data == NULL) | |
3066 | goto out; | |
3067 | ||
3068 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
3069 | data->arg.u.symlink.pages = &page; | |
3070 | data->arg.u.symlink.len = len; | |
1da177e4 | 3071 | |
57dc9a57 TM |
3072 | status = nfs4_do_create(dir, dentry, data); |
3073 | ||
3074 | nfs4_free_createdata(data); | |
3075 | out: | |
1da177e4 LT |
3076 | return status; |
3077 | } | |
3078 | ||
4f390c15 | 3079 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3080 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
3081 | { |
3082 | struct nfs4_exception exception = { }; | |
3083 | int err; | |
3084 | do { | |
3085 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
3086 | _nfs4_proc_symlink(dir, dentry, page, |
3087 | len, sattr), | |
1da177e4 LT |
3088 | &exception); |
3089 | } while (exception.retry); | |
3090 | return err; | |
3091 | } | |
3092 | ||
3093 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3094 | struct iattr *sattr) | |
3095 | { | |
57dc9a57 TM |
3096 | struct nfs4_createdata *data; |
3097 | int status = -ENOMEM; | |
1da177e4 | 3098 | |
57dc9a57 TM |
3099 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3100 | if (data == NULL) | |
3101 | goto out; | |
3102 | ||
3103 | status = nfs4_do_create(dir, dentry, data); | |
3104 | ||
3105 | nfs4_free_createdata(data); | |
3106 | out: | |
1da177e4 LT |
3107 | return status; |
3108 | } | |
3109 | ||
3110 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3111 | struct iattr *sattr) | |
3112 | { | |
3113 | struct nfs4_exception exception = { }; | |
3114 | int err; | |
a8a5da99 AK |
3115 | |
3116 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3117 | do { |
3118 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3119 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
3120 | &exception); | |
3121 | } while (exception.retry); | |
3122 | return err; | |
3123 | } | |
3124 | ||
3125 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3126 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3127 | { |
3128 | struct inode *dir = dentry->d_inode; | |
3129 | struct nfs4_readdir_arg args = { | |
3130 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3131 | .pages = pages, |
1da177e4 LT |
3132 | .pgbase = 0, |
3133 | .count = count, | |
96d25e53 | 3134 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3135 | .plus = plus, |
1da177e4 LT |
3136 | }; |
3137 | struct nfs4_readdir_res res; | |
3138 | struct rpc_message msg = { | |
3139 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3140 | .rpc_argp = &args, | |
3141 | .rpc_resp = &res, | |
3142 | .rpc_cred = cred, | |
3143 | }; | |
3144 | int status; | |
3145 | ||
3110ff80 | 3146 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
3147 | dentry->d_parent->d_name.name, |
3148 | dentry->d_name.name, | |
3149 | (unsigned long long)cookie); | |
1da177e4 LT |
3150 | nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args); |
3151 | res.pgbase = args.pgbase; | |
7c513058 | 3152 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3153 | if (status >= 0) { |
1da177e4 | 3154 | memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3155 | status += args.pgbase; |
3156 | } | |
c4812998 TM |
3157 | |
3158 | nfs_invalidate_atime(dir); | |
3159 | ||
3110ff80 | 3160 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3161 | return status; |
3162 | } | |
3163 | ||
3164 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3165 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3166 | { |
3167 | struct nfs4_exception exception = { }; | |
3168 | int err; | |
3169 | do { | |
3170 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
3171 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 3172 | pages, count, plus), |
1da177e4 LT |
3173 | &exception); |
3174 | } while (exception.retry); | |
3175 | return err; | |
3176 | } | |
3177 | ||
3178 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3179 | struct iattr *sattr, dev_t rdev) | |
3180 | { | |
57dc9a57 TM |
3181 | struct nfs4_createdata *data; |
3182 | int mode = sattr->ia_mode; | |
3183 | int status = -ENOMEM; | |
1da177e4 LT |
3184 | |
3185 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
3186 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
57dc9a57 TM |
3187 | |
3188 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); | |
3189 | if (data == NULL) | |
3190 | goto out; | |
3191 | ||
1da177e4 | 3192 | if (S_ISFIFO(mode)) |
57dc9a57 | 3193 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3194 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3195 | data->arg.ftype = NF4BLK; |
3196 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3197 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3198 | } |
3199 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3200 | data->arg.ftype = NF4CHR; |
3201 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3202 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 | 3203 | } |
1da177e4 | 3204 | |
57dc9a57 TM |
3205 | status = nfs4_do_create(dir, dentry, data); |
3206 | ||
3207 | nfs4_free_createdata(data); | |
3208 | out: | |
1da177e4 LT |
3209 | return status; |
3210 | } | |
3211 | ||
3212 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3213 | struct iattr *sattr, dev_t rdev) | |
3214 | { | |
3215 | struct nfs4_exception exception = { }; | |
3216 | int err; | |
a8a5da99 AK |
3217 | |
3218 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3219 | do { |
3220 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3221 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
3222 | &exception); | |
3223 | } while (exception.retry); | |
3224 | return err; | |
3225 | } | |
3226 | ||
3227 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3228 | struct nfs_fsstat *fsstat) | |
3229 | { | |
3230 | struct nfs4_statfs_arg args = { | |
3231 | .fh = fhandle, | |
3232 | .bitmask = server->attr_bitmask, | |
3233 | }; | |
24ad148a BH |
3234 | struct nfs4_statfs_res res = { |
3235 | .fsstat = fsstat, | |
3236 | }; | |
1da177e4 LT |
3237 | struct rpc_message msg = { |
3238 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3239 | .rpc_argp = &args, | |
24ad148a | 3240 | .rpc_resp = &res, |
1da177e4 LT |
3241 | }; |
3242 | ||
0e574af1 | 3243 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3244 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3245 | } |
3246 | ||
3247 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3248 | { | |
3249 | struct nfs4_exception exception = { }; | |
3250 | int err; | |
3251 | do { | |
3252 | err = nfs4_handle_exception(server, | |
3253 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3254 | &exception); | |
3255 | } while (exception.retry); | |
3256 | return err; | |
3257 | } | |
3258 | ||
3259 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3260 | struct nfs_fsinfo *fsinfo) | |
3261 | { | |
3262 | struct nfs4_fsinfo_arg args = { | |
3263 | .fh = fhandle, | |
3264 | .bitmask = server->attr_bitmask, | |
3265 | }; | |
3dda5e43 BH |
3266 | struct nfs4_fsinfo_res res = { |
3267 | .fsinfo = fsinfo, | |
3268 | }; | |
1da177e4 LT |
3269 | struct rpc_message msg = { |
3270 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3271 | .rpc_argp = &args, | |
3dda5e43 | 3272 | .rpc_resp = &res, |
1da177e4 LT |
3273 | }; |
3274 | ||
7c513058 | 3275 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3276 | } |
3277 | ||
3278 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3279 | { | |
3280 | struct nfs4_exception exception = { }; | |
3281 | int err; | |
3282 | ||
3283 | do { | |
3284 | err = nfs4_handle_exception(server, | |
3285 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
3286 | &exception); | |
3287 | } while (exception.retry); | |
3288 | return err; | |
3289 | } | |
3290 | ||
3291 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3292 | { | |
0e574af1 | 3293 | nfs_fattr_init(fsinfo->fattr); |
1da177e4 LT |
3294 | return nfs4_do_fsinfo(server, fhandle, fsinfo); |
3295 | } | |
3296 | ||
3297 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3298 | struct nfs_pathconf *pathconf) | |
3299 | { | |
3300 | struct nfs4_pathconf_arg args = { | |
3301 | .fh = fhandle, | |
3302 | .bitmask = server->attr_bitmask, | |
3303 | }; | |
d45b2989 BH |
3304 | struct nfs4_pathconf_res res = { |
3305 | .pathconf = pathconf, | |
3306 | }; | |
1da177e4 LT |
3307 | struct rpc_message msg = { |
3308 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3309 | .rpc_argp = &args, | |
d45b2989 | 3310 | .rpc_resp = &res, |
1da177e4 LT |
3311 | }; |
3312 | ||
3313 | /* None of the pathconf attributes are mandatory to implement */ | |
3314 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3315 | memset(pathconf, 0, sizeof(*pathconf)); | |
3316 | return 0; | |
3317 | } | |
3318 | ||
0e574af1 | 3319 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3320 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3321 | } |
3322 | ||
3323 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3324 | struct nfs_pathconf *pathconf) | |
3325 | { | |
3326 | struct nfs4_exception exception = { }; | |
3327 | int err; | |
3328 | ||
3329 | do { | |
3330 | err = nfs4_handle_exception(server, | |
3331 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3332 | &exception); | |
3333 | } while (exception.retry); | |
3334 | return err; | |
3335 | } | |
3336 | ||
d20581aa BH |
3337 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3338 | { | |
cd841605 | 3339 | nfs_invalidate_atime(data->header->inode); |
d20581aa BH |
3340 | } |
3341 | ||
cbdabc7f | 3342 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3343 | { |
cd841605 | 3344 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
1da177e4 | 3345 | |
9e33bed5 | 3346 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3347 | rpc_restart_call_prepare(task); |
ec06c096 | 3348 | return -EAGAIN; |
1da177e4 | 3349 | } |
8850df99 | 3350 | |
d20581aa | 3351 | __nfs4_read_done_cb(data); |
1da177e4 | 3352 | if (task->tk_status > 0) |
ec06c096 TM |
3353 | renew_lease(server, data->timestamp); |
3354 | return 0; | |
1da177e4 LT |
3355 | } |
3356 | ||
cbdabc7f AA |
3357 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3358 | { | |
3359 | ||
3360 | dprintk("--> %s\n", __func__); | |
3361 | ||
3362 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3363 | return -EAGAIN; | |
3364 | ||
d20581aa BH |
3365 | return data->read_done_cb ? data->read_done_cb(task, data) : |
3366 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
3367 | } |
3368 | ||
bdc7f021 | 3369 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3370 | { |
1da177e4 | 3371 | data->timestamp = jiffies; |
cbdabc7f | 3372 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3373 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
9d12b216 | 3374 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
1da177e4 LT |
3375 | } |
3376 | ||
ea7c3303 BS |
3377 | static void nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) |
3378 | { | |
cd841605 | 3379 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
ea7c3303 BS |
3380 | &data->args.seq_args, |
3381 | &data->res.seq_res, | |
3382 | task)) | |
3383 | return; | |
3384 | rpc_call_start(task); | |
1da177e4 LT |
3385 | } |
3386 | ||
cbdabc7f AA |
3387 | /* Reset the the nfs_read_data to send the read to the MDS. */ |
3388 | void nfs4_reset_read(struct rpc_task *task, struct nfs_read_data *data) | |
3389 | { | |
cd841605 FI |
3390 | struct nfs_pgio_header *hdr = data->header; |
3391 | struct inode *inode = hdr->inode; | |
3392 | ||
cbdabc7f | 3393 | dprintk("%s Reset task for i/o through\n", __func__); |
cd841605 | 3394 | data->ds_clp = NULL; |
cbdabc7f AA |
3395 | /* offsets will differ in the dense stripe case */ |
3396 | data->args.offset = data->mds_offset; | |
cd841605 | 3397 | data->args.fh = NFS_FH(inode); |
cbdabc7f | 3398 | data->read_done_cb = nfs4_read_done_cb; |
cd841605 FI |
3399 | task->tk_ops = hdr->mds_ops; |
3400 | rpc_task_reset_client(task, NFS_CLIENT(inode)); | |
cbdabc7f AA |
3401 | } |
3402 | EXPORT_SYMBOL_GPL(nfs4_reset_read); | |
3403 | ||
b029bc9b | 3404 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3405 | { |
cd841605 | 3406 | struct inode *inode = data->header->inode; |
1da177e4 | 3407 | |
9e33bed5 | 3408 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3409 | rpc_restart_call_prepare(task); |
788e7a89 | 3410 | return -EAGAIN; |
1da177e4 | 3411 | } |
4f9838c7 | 3412 | if (task->tk_status >= 0) { |
1da177e4 | 3413 | renew_lease(NFS_SERVER(inode), data->timestamp); |
70ca8852 | 3414 | nfs_post_op_update_inode_force_wcc(inode, data->res.fattr); |
4f9838c7 | 3415 | } |
788e7a89 | 3416 | return 0; |
1da177e4 LT |
3417 | } |
3418 | ||
b029bc9b FI |
3419 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3420 | { | |
3421 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3422 | return -EAGAIN; | |
d20581aa BH |
3423 | return data->write_done_cb ? data->write_done_cb(task, data) : |
3424 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
3425 | } |
3426 | ||
a69aef14 FI |
3427 | /* Reset the the nfs_write_data to send the write to the MDS. */ |
3428 | void nfs4_reset_write(struct rpc_task *task, struct nfs_write_data *data) | |
3429 | { | |
cd841605 FI |
3430 | struct nfs_pgio_header *hdr = data->header; |
3431 | struct inode *inode = hdr->inode; | |
3432 | ||
a69aef14 | 3433 | dprintk("%s Reset task for i/o through\n", __func__); |
cd841605 | 3434 | data->ds_clp = NULL; |
a69aef14 | 3435 | data->write_done_cb = nfs4_write_done_cb; |
cd841605 | 3436 | data->args.fh = NFS_FH(inode); |
a69aef14 FI |
3437 | data->args.bitmask = data->res.server->cache_consistency_bitmask; |
3438 | data->args.offset = data->mds_offset; | |
3439 | data->res.fattr = &data->fattr; | |
cd841605 FI |
3440 | task->tk_ops = hdr->mds_ops; |
3441 | rpc_task_reset_client(task, NFS_CLIENT(inode)); | |
a69aef14 FI |
3442 | } |
3443 | EXPORT_SYMBOL_GPL(nfs4_reset_write); | |
3444 | ||
bdc7f021 | 3445 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3446 | { |
cd841605 | 3447 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
bdc7f021 | 3448 | |
6c75dc0d | 3449 | if (data->ds_clp) { |
7ffd1064 FI |
3450 | data->args.bitmask = NULL; |
3451 | data->res.fattr = NULL; | |
3452 | } else | |
3453 | data->args.bitmask = server->cache_consistency_bitmask; | |
b029bc9b FI |
3454 | if (!data->write_done_cb) |
3455 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3456 | data->res.server = server; |
1da177e4 LT |
3457 | data->timestamp = jiffies; |
3458 | ||
bdc7f021 | 3459 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
9d12b216 | 3460 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3461 | } |
3462 | ||
c6cb80d0 BS |
3463 | static void nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) |
3464 | { | |
cd841605 | 3465 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
c6cb80d0 BS |
3466 | &data->args.seq_args, |
3467 | &data->res.seq_res, | |
3468 | task)) | |
3469 | return; | |
3470 | rpc_call_start(task); | |
1da177e4 LT |
3471 | } |
3472 | ||
0b7c0153 FI |
3473 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
3474 | { | |
3475 | if (nfs4_setup_sequence(NFS_SERVER(data->inode), | |
3476 | &data->args.seq_args, | |
3477 | &data->res.seq_res, | |
3478 | task)) | |
3479 | return; | |
3480 | rpc_call_start(task); | |
3481 | } | |
3482 | ||
3483 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) | |
1da177e4 | 3484 | { |
1da177e4 | 3485 | struct inode *inode = data->inode; |
14516c3a | 3486 | |
9e33bed5 | 3487 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
d00c5d43 | 3488 | rpc_restart_call_prepare(task); |
788e7a89 | 3489 | return -EAGAIN; |
1da177e4 | 3490 | } |
9e08a3c5 | 3491 | nfs_refresh_inode(inode, data->res.fattr); |
788e7a89 | 3492 | return 0; |
1da177e4 LT |
3493 | } |
3494 | ||
0b7c0153 | 3495 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
3496 | { |
3497 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3498 | return -EAGAIN; | |
0b7c0153 | 3499 | return data->commit_done_cb(task, data); |
5f452431 FI |
3500 | } |
3501 | ||
0b7c0153 | 3502 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 3503 | { |
788e7a89 | 3504 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce FI |
3505 | |
3506 | if (data->lseg) { | |
3507 | data->args.bitmask = NULL; | |
3508 | data->res.fattr = NULL; | |
3509 | } else | |
3510 | data->args.bitmask = server->cache_consistency_bitmask; | |
0b7c0153 FI |
3511 | if (data->commit_done_cb == NULL) |
3512 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 3513 | data->res.server = server; |
bdc7f021 | 3514 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
9d12b216 | 3515 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3516 | } |
3517 | ||
9bc4e3ca CL |
3518 | struct nfs4_renewdata { |
3519 | struct nfs_client *client; | |
3520 | unsigned long timestamp; | |
3521 | }; | |
3522 | ||
1da177e4 LT |
3523 | /* |
3524 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3525 | * standalone procedure for queueing an asynchronous RENEW. | |
3526 | */ | |
9bc4e3ca | 3527 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3528 | { |
9bc4e3ca CL |
3529 | struct nfs4_renewdata *data = calldata; |
3530 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3531 | |
0851de06 AB |
3532 | if (atomic_read(&clp->cl_count) > 1) |
3533 | nfs4_schedule_state_renewal(clp); | |
3534 | nfs_put_client(clp); | |
9bc4e3ca | 3535 | kfree(data); |
dc96aef9 AB |
3536 | } |
3537 | ||
9bc4e3ca | 3538 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3539 | { |
9bc4e3ca CL |
3540 | struct nfs4_renewdata *data = calldata; |
3541 | struct nfs_client *clp = data->client; | |
3542 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3543 | |
3544 | if (task->tk_status < 0) { | |
95baa25c | 3545 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
3546 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
3547 | return; | |
3548 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 3549 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
3550 | return; |
3551 | } | |
3552 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 3553 | } |
452e9352 | 3554 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3555 | } |
3556 | ||
963d8fe5 TM |
3557 | static const struct rpc_call_ops nfs4_renew_ops = { |
3558 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3559 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3560 | }; |
3561 | ||
2f60ea6b | 3562 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
3563 | { |
3564 | struct rpc_message msg = { | |
3565 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3566 | .rpc_argp = clp, | |
b4454fe1 | 3567 | .rpc_cred = cred, |
1da177e4 | 3568 | }; |
9bc4e3ca | 3569 | struct nfs4_renewdata *data; |
1da177e4 | 3570 | |
2f60ea6b TM |
3571 | if (renew_flags == 0) |
3572 | return 0; | |
0851de06 AB |
3573 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3574 | return -EIO; | |
b569ad34 | 3575 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
3576 | if (data == NULL) |
3577 | return -ENOMEM; | |
3578 | data->client = clp; | |
3579 | data->timestamp = jiffies; | |
1da177e4 | 3580 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, |
9bc4e3ca | 3581 | &nfs4_renew_ops, data); |
1da177e4 LT |
3582 | } |
3583 | ||
8534d4ec | 3584 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3585 | { |
3586 | struct rpc_message msg = { | |
3587 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3588 | .rpc_argp = clp, | |
b4454fe1 | 3589 | .rpc_cred = cred, |
1da177e4 LT |
3590 | }; |
3591 | unsigned long now = jiffies; | |
3592 | int status; | |
3593 | ||
3594 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3595 | if (status < 0) | |
3596 | return status; | |
452e9352 | 3597 | do_renew_lease(clp, now); |
1da177e4 LT |
3598 | return 0; |
3599 | } | |
3600 | ||
aa1870af BF |
3601 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3602 | { | |
3603 | return (server->caps & NFS_CAP_ACLS) | |
3604 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3605 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3606 | } | |
3607 | ||
3608 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that | |
3609 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on | |
3610 | * the stack. | |
3611 | */ | |
3612 | #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT) | |
3613 | ||
e9e3d724 NH |
3614 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
3615 | struct page **pages, unsigned int *pgbase) | |
3616 | { | |
3617 | struct page *newpage, **spages; | |
3618 | int rc = 0; | |
3619 | size_t len; | |
3620 | spages = pages; | |
3621 | ||
3622 | do { | |
43b7c3f0 | 3623 | len = min_t(size_t, PAGE_CACHE_SIZE, buflen); |
e9e3d724 NH |
3624 | newpage = alloc_page(GFP_KERNEL); |
3625 | ||
3626 | if (newpage == NULL) | |
3627 | goto unwind; | |
3628 | memcpy(page_address(newpage), buf, len); | |
3629 | buf += len; | |
3630 | buflen -= len; | |
3631 | *pages++ = newpage; | |
3632 | rc++; | |
3633 | } while (buflen != 0); | |
3634 | ||
3635 | return rc; | |
3636 | ||
3637 | unwind: | |
3638 | for(; rc > 0; rc--) | |
3639 | __free_page(spages[rc-1]); | |
3640 | return -ENOMEM; | |
3641 | } | |
3642 | ||
e50a1c2e BF |
3643 | struct nfs4_cached_acl { |
3644 | int cached; | |
3645 | size_t len; | |
3e9d4154 | 3646 | char data[0]; |
e50a1c2e BF |
3647 | }; |
3648 | ||
3649 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3650 | { | |
3651 | struct nfs_inode *nfsi = NFS_I(inode); | |
3652 | ||
3653 | spin_lock(&inode->i_lock); | |
3654 | kfree(nfsi->nfs4_acl); | |
3655 | nfsi->nfs4_acl = acl; | |
3656 | spin_unlock(&inode->i_lock); | |
3657 | } | |
3658 | ||
3659 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3660 | { | |
3661 | nfs4_set_cached_acl(inode, NULL); | |
3662 | } | |
3663 | ||
3664 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3665 | { | |
3666 | struct nfs_inode *nfsi = NFS_I(inode); | |
3667 | struct nfs4_cached_acl *acl; | |
3668 | int ret = -ENOENT; | |
3669 | ||
3670 | spin_lock(&inode->i_lock); | |
3671 | acl = nfsi->nfs4_acl; | |
3672 | if (acl == NULL) | |
3673 | goto out; | |
3674 | if (buf == NULL) /* user is just asking for length */ | |
3675 | goto out_len; | |
3676 | if (acl->cached == 0) | |
3677 | goto out; | |
3678 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3679 | if (acl->len > buflen) | |
3680 | goto out; | |
3681 | memcpy(buf, acl->data, acl->len); | |
3682 | out_len: | |
3683 | ret = acl->len; | |
3684 | out: | |
3685 | spin_unlock(&inode->i_lock); | |
3686 | return ret; | |
3687 | } | |
3688 | ||
5794d21e | 3689 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
3690 | { |
3691 | struct nfs4_cached_acl *acl; | |
3692 | ||
5794d21e | 3693 | if (pages && acl_len <= PAGE_SIZE) { |
e50a1c2e BF |
3694 | acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL); |
3695 | if (acl == NULL) | |
3696 | goto out; | |
3697 | acl->cached = 1; | |
5794d21e | 3698 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
3699 | } else { |
3700 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3701 | if (acl == NULL) | |
3702 | goto out; | |
3703 | acl->cached = 0; | |
3704 | } | |
3705 | acl->len = acl_len; | |
3706 | out: | |
3707 | nfs4_set_cached_acl(inode, acl); | |
3708 | } | |
3709 | ||
bf118a34 AA |
3710 | /* |
3711 | * The getxattr API returns the required buffer length when called with a | |
3712 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
3713 | * the required buf. On a NULL buf, we send a page of data to the server | |
3714 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
3715 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
3716 | * the cache. If not so, we throw away the page, and cache the required | |
3717 | * length. The next getxattr call will then produce another round trip to | |
3718 | * the server, this time with the input buf of the required size. | |
3719 | */ | |
16b4289c | 3720 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3721 | { |
bf118a34 | 3722 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
3723 | struct nfs_getaclargs args = { |
3724 | .fh = NFS_FH(inode), | |
3725 | .acl_pages = pages, | |
3726 | .acl_len = buflen, | |
3727 | }; | |
663c79b3 BH |
3728 | struct nfs_getaclres res = { |
3729 | .acl_len = buflen, | |
3730 | }; | |
aa1870af BF |
3731 | struct rpc_message msg = { |
3732 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3733 | .rpc_argp = &args, | |
663c79b3 | 3734 | .rpc_resp = &res, |
aa1870af | 3735 | }; |
bf118a34 | 3736 | int ret = -ENOMEM, npages, i, acl_len = 0; |
aa1870af | 3737 | |
bf118a34 AA |
3738 | npages = (buflen + PAGE_SIZE - 1) >> PAGE_SHIFT; |
3739 | /* As long as we're doing a round trip to the server anyway, | |
3740 | * let's be prepared for a page of acl data. */ | |
3741 | if (npages == 0) | |
3742 | npages = 1; | |
3743 | ||
5a006899 SP |
3744 | /* Add an extra page to handle the bitmap returned */ |
3745 | npages++; | |
3746 | ||
bf118a34 AA |
3747 | for (i = 0; i < npages; i++) { |
3748 | pages[i] = alloc_page(GFP_KERNEL); | |
3749 | if (!pages[i]) | |
3750 | goto out_free; | |
e50a1c2e | 3751 | } |
5a006899 SP |
3752 | |
3753 | /* for decoding across pages */ | |
3754 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
3755 | if (!res.acl_scratch) | |
3756 | goto out_free; | |
3757 | ||
bf118a34 AA |
3758 | args.acl_len = npages * PAGE_SIZE; |
3759 | args.acl_pgbase = 0; | |
5a006899 | 3760 | |
bf118a34 AA |
3761 | /* Let decode_getfacl know not to fail if the ACL data is larger than |
3762 | * the page we send as a guess */ | |
3763 | if (buf == NULL) | |
3764 | res.acl_flags |= NFS4_ACL_LEN_REQUEST; | |
bf118a34 | 3765 | |
de040bec | 3766 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
3767 | __func__, buf, buflen, npages, args.acl_len); |
3768 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
3769 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
3770 | if (ret) |
3771 | goto out_free; | |
bf118a34 AA |
3772 | |
3773 | acl_len = res.acl_len - res.acl_data_offset; | |
3774 | if (acl_len > args.acl_len) | |
5794d21e | 3775 | nfs4_write_cached_acl(inode, NULL, 0, acl_len); |
e50a1c2e | 3776 | else |
5794d21e | 3777 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, |
bf118a34 | 3778 | acl_len); |
e50a1c2e BF |
3779 | if (buf) { |
3780 | ret = -ERANGE; | |
bf118a34 | 3781 | if (acl_len > buflen) |
e50a1c2e | 3782 | goto out_free; |
bf118a34 | 3783 | _copy_from_pages(buf, pages, res.acl_data_offset, |
20e0fa98 | 3784 | acl_len); |
e50a1c2e | 3785 | } |
bf118a34 | 3786 | ret = acl_len; |
e50a1c2e | 3787 | out_free: |
bf118a34 AA |
3788 | for (i = 0; i < npages; i++) |
3789 | if (pages[i]) | |
3790 | __free_page(pages[i]); | |
331818f1 TM |
3791 | if (res.acl_scratch) |
3792 | __free_page(res.acl_scratch); | |
aa1870af BF |
3793 | return ret; |
3794 | } | |
3795 | ||
16b4289c TM |
3796 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
3797 | { | |
3798 | struct nfs4_exception exception = { }; | |
3799 | ssize_t ret; | |
3800 | do { | |
3801 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
3802 | if (ret >= 0) | |
3803 | break; | |
3804 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
3805 | } while (exception.retry); | |
3806 | return ret; | |
3807 | } | |
3808 | ||
e50a1c2e BF |
3809 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
3810 | { | |
3811 | struct nfs_server *server = NFS_SERVER(inode); | |
3812 | int ret; | |
3813 | ||
3814 | if (!nfs4_server_supports_acls(server)) | |
3815 | return -EOPNOTSUPP; | |
3816 | ret = nfs_revalidate_inode(server, inode); | |
3817 | if (ret < 0) | |
3818 | return ret; | |
08a22b39 AK |
3819 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
3820 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
3821 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
3822 | if (ret != -ENOENT) | |
bf118a34 AA |
3823 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
3824 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
3825 | return ret; |
3826 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
3827 | } | |
3828 | ||
16b4289c | 3829 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
3830 | { |
3831 | struct nfs_server *server = NFS_SERVER(inode); | |
3832 | struct page *pages[NFS4ACL_MAXPAGES]; | |
3833 | struct nfs_setaclargs arg = { | |
3834 | .fh = NFS_FH(inode), | |
3835 | .acl_pages = pages, | |
3836 | .acl_len = buflen, | |
3837 | }; | |
73c403a9 | 3838 | struct nfs_setaclres res; |
4b580ee3 BF |
3839 | struct rpc_message msg = { |
3840 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
3841 | .rpc_argp = &arg, | |
73c403a9 | 3842 | .rpc_resp = &res, |
4b580ee3 | 3843 | }; |
e9e3d724 | 3844 | int ret, i; |
4b580ee3 BF |
3845 | |
3846 | if (!nfs4_server_supports_acls(server)) | |
3847 | return -EOPNOTSUPP; | |
e9e3d724 NH |
3848 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
3849 | if (i < 0) | |
3850 | return i; | |
642ac549 | 3851 | nfs_inode_return_delegation(inode); |
7c513058 | 3852 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
3853 | |
3854 | /* | |
3855 | * Free each page after tx, so the only ref left is | |
3856 | * held by the network stack | |
3857 | */ | |
3858 | for (; i > 0; i--) | |
3859 | put_page(pages[i-1]); | |
3860 | ||
08a22b39 AK |
3861 | /* |
3862 | * Acl update can result in inode attribute update. | |
3863 | * so mark the attribute cache invalid. | |
3864 | */ | |
3865 | spin_lock(&inode->i_lock); | |
3866 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
3867 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
3868 | nfs_access_zap_cache(inode); |
3869 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
3870 | return ret; |
3871 | } | |
3872 | ||
16b4289c TM |
3873 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
3874 | { | |
3875 | struct nfs4_exception exception = { }; | |
3876 | int err; | |
3877 | do { | |
3878 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3879 | __nfs4_proc_set_acl(inode, buf, buflen), | |
3880 | &exception); | |
3881 | } while (exception.retry); | |
3882 | return err; | |
3883 | } | |
3884 | ||
1da177e4 | 3885 | static int |
aa5190d0 | 3886 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 3887 | { |
aa5190d0 TM |
3888 | struct nfs_client *clp = server->nfs_client; |
3889 | ||
3890 | if (task->tk_status >= 0) | |
1da177e4 LT |
3891 | return 0; |
3892 | switch(task->tk_status) { | |
a1d0b5ee | 3893 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
3894 | case -NFS4ERR_ADMIN_REVOKED: |
3895 | case -NFS4ERR_BAD_STATEID: | |
14977489 TM |
3896 | if (state == NULL) |
3897 | break; | |
3898 | nfs_remove_bad_delegation(state->inode); | |
9e33bed5 TM |
3899 | case -NFS4ERR_OPENMODE: |
3900 | if (state == NULL) | |
3901 | break; | |
0400a6b0 TM |
3902 | nfs4_schedule_stateid_recovery(server, state); |
3903 | goto wait_on_recovery; | |
0ced63d1 TM |
3904 | case -NFS4ERR_EXPIRED: |
3905 | if (state != NULL) | |
3906 | nfs4_schedule_stateid_recovery(server, state); | |
1da177e4 | 3907 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 3908 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
3909 | nfs4_schedule_lease_recovery(clp); |
3910 | goto wait_on_recovery; | |
4745e315 AA |
3911 | #if defined(CONFIG_NFS_V4_1) |
3912 | case -NFS4ERR_BADSESSION: | |
3913 | case -NFS4ERR_BADSLOT: | |
3914 | case -NFS4ERR_BAD_HIGH_SLOT: | |
3915 | case -NFS4ERR_DEADSESSION: | |
3916 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
3917 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
3918 | case -NFS4ERR_SEQ_MISORDERED: | |
3919 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
3920 | task->tk_status); | |
0400a6b0 | 3921 | nfs4_schedule_session_recovery(clp->cl_session); |
4745e315 AA |
3922 | task->tk_status = 0; |
3923 | return -EAGAIN; | |
3924 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 3925 | case -NFS4ERR_DELAY: |
aa5190d0 | 3926 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 3927 | case -NFS4ERR_GRACE: |
2c643488 | 3928 | case -EKEYEXPIRED: |
1da177e4 LT |
3929 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
3930 | task->tk_status = 0; | |
3931 | return -EAGAIN; | |
a8a4ae3a | 3932 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
3933 | case -NFS4ERR_OLD_STATEID: |
3934 | task->tk_status = 0; | |
3935 | return -EAGAIN; | |
3936 | } | |
3937 | task->tk_status = nfs4_map_errors(task->tk_status); | |
3938 | return 0; | |
0400a6b0 | 3939 | wait_on_recovery: |
a2c0b9e2 | 3940 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
3941 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
3942 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
3943 | task->tk_status = 0; | |
3944 | return -EAGAIN; | |
1da177e4 LT |
3945 | } |
3946 | ||
cd93710e CL |
3947 | static void nfs4_construct_boot_verifier(struct nfs_client *clp, |
3948 | nfs4_verifier *bootverf) | |
3949 | { | |
3950 | __be32 verf[2]; | |
3951 | ||
3952 | verf[0] = htonl((u32)clp->cl_boot_time.tv_sec); | |
3953 | verf[1] = htonl((u32)clp->cl_boot_time.tv_nsec); | |
3954 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); | |
3955 | } | |
3956 | ||
bb8b27e5 TM |
3957 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
3958 | unsigned short port, struct rpc_cred *cred, | |
3959 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
3960 | { |
3961 | nfs4_verifier sc_verifier; | |
3962 | struct nfs4_setclientid setclientid = { | |
3963 | .sc_verifier = &sc_verifier, | |
3964 | .sc_prog = program, | |
f4eecd5d | 3965 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
3966 | }; |
3967 | struct rpc_message msg = { | |
3968 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
3969 | .rpc_argp = &setclientid, | |
bb8b27e5 | 3970 | .rpc_resp = res, |
286d7d6a | 3971 | .rpc_cred = cred, |
1da177e4 | 3972 | }; |
1da177e4 LT |
3973 | int loop = 0; |
3974 | int status; | |
3975 | ||
cd93710e | 3976 | nfs4_construct_boot_verifier(clp, &sc_verifier); |
1da177e4 LT |
3977 | |
3978 | for(;;) { | |
2446ab60 | 3979 | rcu_read_lock(); |
1da177e4 | 3980 | setclientid.sc_name_len = scnprintf(setclientid.sc_name, |
69dd716c | 3981 | sizeof(setclientid.sc_name), "%s/%s %s %s %u", |
d4d3c507 CL |
3982 | clp->cl_ipaddr, |
3983 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3984 | RPC_DISPLAY_ADDR), | |
69dd716c TM |
3985 | rpc_peeraddr2str(clp->cl_rpcclient, |
3986 | RPC_DISPLAY_PROTO), | |
78ea323b | 3987 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
1da177e4 LT |
3988 | clp->cl_id_uniquifier); |
3989 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, | |
d4d3c507 CL |
3990 | sizeof(setclientid.sc_netid), |
3991 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3992 | RPC_DISPLAY_NETID)); | |
1da177e4 | 3993 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 3994 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 | 3995 | clp->cl_ipaddr, port >> 8, port & 255); |
2446ab60 | 3996 | rcu_read_unlock(); |
1da177e4 | 3997 | |
1bd714f2 | 3998 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
3999 | if (status != -NFS4ERR_CLID_INUSE) |
4000 | break; | |
fd954ae1 TM |
4001 | if (loop != 0) { |
4002 | ++clp->cl_id_uniquifier; | |
1da177e4 | 4003 | break; |
fd954ae1 TM |
4004 | } |
4005 | ++loop; | |
4006 | ssleep(clp->cl_lease_time / HZ + 1); | |
1da177e4 LT |
4007 | } |
4008 | return status; | |
4009 | } | |
4010 | ||
fd954ae1 | 4011 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
4012 | struct nfs4_setclientid_res *arg, |
4013 | struct rpc_cred *cred) | |
1da177e4 LT |
4014 | { |
4015 | struct nfs_fsinfo fsinfo; | |
4016 | struct rpc_message msg = { | |
4017 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 4018 | .rpc_argp = arg, |
1da177e4 | 4019 | .rpc_resp = &fsinfo, |
286d7d6a | 4020 | .rpc_cred = cred, |
1da177e4 LT |
4021 | }; |
4022 | unsigned long now; | |
4023 | int status; | |
4024 | ||
4025 | now = jiffies; | |
1bd714f2 | 4026 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
4027 | if (status == 0) { |
4028 | spin_lock(&clp->cl_lock); | |
4029 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
4030 | clp->cl_last_renewal = now; | |
4031 | spin_unlock(&clp->cl_lock); | |
4032 | } | |
4033 | return status; | |
4034 | } | |
4035 | ||
fe650407 TM |
4036 | struct nfs4_delegreturndata { |
4037 | struct nfs4_delegreturnargs args; | |
fa178f29 | 4038 | struct nfs4_delegreturnres res; |
fe650407 TM |
4039 | struct nfs_fh fh; |
4040 | nfs4_stateid stateid; | |
26e976a8 | 4041 | unsigned long timestamp; |
fa178f29 | 4042 | struct nfs_fattr fattr; |
fe650407 TM |
4043 | int rpc_status; |
4044 | }; | |
4045 | ||
fe650407 TM |
4046 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
4047 | { | |
4048 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 4049 | |
14516c3a TM |
4050 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4051 | return; | |
938e1010 | 4052 | |
79708861 RL |
4053 | switch (task->tk_status) { |
4054 | case -NFS4ERR_STALE_STATEID: | |
4055 | case -NFS4ERR_EXPIRED: | |
4056 | case 0: | |
fa178f29 | 4057 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
4058 | break; |
4059 | default: | |
4060 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
4061 | -EAGAIN) { | |
d00c5d43 | 4062 | rpc_restart_call_prepare(task); |
79708861 RL |
4063 | return; |
4064 | } | |
4065 | } | |
4066 | data->rpc_status = task->tk_status; | |
fe650407 TM |
4067 | } |
4068 | ||
4069 | static void nfs4_delegreturn_release(void *calldata) | |
4070 | { | |
fe650407 TM |
4071 | kfree(calldata); |
4072 | } | |
4073 | ||
938e1010 AA |
4074 | #if defined(CONFIG_NFS_V4_1) |
4075 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
4076 | { | |
4077 | struct nfs4_delegreturndata *d_data; | |
4078 | ||
4079 | d_data = (struct nfs4_delegreturndata *)data; | |
4080 | ||
035168ab | 4081 | if (nfs4_setup_sequence(d_data->res.server, |
938e1010 | 4082 | &d_data->args.seq_args, |
9d12b216 | 4083 | &d_data->res.seq_res, task)) |
938e1010 AA |
4084 | return; |
4085 | rpc_call_start(task); | |
4086 | } | |
4087 | #endif /* CONFIG_NFS_V4_1 */ | |
4088 | ||
c8d149f3 | 4089 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
4090 | #if defined(CONFIG_NFS_V4_1) |
4091 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
4092 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
4093 | .rpc_call_done = nfs4_delegreturn_done, |
4094 | .rpc_release = nfs4_delegreturn_release, | |
4095 | }; | |
4096 | ||
e6f81075 | 4097 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
4098 | { |
4099 | struct nfs4_delegreturndata *data; | |
fa178f29 | 4100 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 4101 | struct rpc_task *task; |
5138fde0 TM |
4102 | struct rpc_message msg = { |
4103 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
4104 | .rpc_cred = cred, | |
4105 | }; | |
c970aa85 TM |
4106 | struct rpc_task_setup task_setup_data = { |
4107 | .rpc_client = server->client, | |
5138fde0 | 4108 | .rpc_message = &msg, |
c970aa85 TM |
4109 | .callback_ops = &nfs4_delegreturn_ops, |
4110 | .flags = RPC_TASK_ASYNC, | |
4111 | }; | |
e6f81075 | 4112 | int status = 0; |
fe650407 | 4113 | |
8535b2be | 4114 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
4115 | if (data == NULL) |
4116 | return -ENOMEM; | |
9d12b216 | 4117 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
4118 | data->args.fhandle = &data->fh; |
4119 | data->args.stateid = &data->stateid; | |
fa178f29 | 4120 | data->args.bitmask = server->attr_bitmask; |
fe650407 | 4121 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 4122 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
4123 | data->res.fattr = &data->fattr; |
4124 | data->res.server = server; | |
5138fde0 | 4125 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 4126 | data->timestamp = jiffies; |
fe650407 TM |
4127 | data->rpc_status = 0; |
4128 | ||
c970aa85 | 4129 | task_setup_data.callback_data = data; |
1174dd1f TM |
4130 | msg.rpc_argp = &data->args; |
4131 | msg.rpc_resp = &data->res; | |
c970aa85 | 4132 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 4133 | if (IS_ERR(task)) |
fe650407 | 4134 | return PTR_ERR(task); |
e6f81075 TM |
4135 | if (!issync) |
4136 | goto out; | |
fe650407 | 4137 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
4138 | if (status != 0) |
4139 | goto out; | |
4140 | status = data->rpc_status; | |
4141 | if (status != 0) | |
4142 | goto out; | |
4143 | nfs_refresh_inode(inode, &data->fattr); | |
4144 | out: | |
e6b3c4db | 4145 | rpc_put_task(task); |
fe650407 | 4146 | return status; |
1da177e4 LT |
4147 | } |
4148 | ||
e6f81075 | 4149 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
4150 | { |
4151 | struct nfs_server *server = NFS_SERVER(inode); | |
4152 | struct nfs4_exception exception = { }; | |
4153 | int err; | |
4154 | do { | |
e6f81075 | 4155 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
4156 | switch (err) { |
4157 | case -NFS4ERR_STALE_STATEID: | |
4158 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
4159 | case 0: |
4160 | return 0; | |
4161 | } | |
4162 | err = nfs4_handle_exception(server, err, &exception); | |
4163 | } while (exception.retry); | |
4164 | return err; | |
4165 | } | |
4166 | ||
4167 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
4168 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
4169 | ||
4170 | /* | |
4171 | * sleep, with exponential backoff, and retry the LOCK operation. | |
4172 | */ | |
4173 | static unsigned long | |
4174 | nfs4_set_lock_task_retry(unsigned long timeout) | |
4175 | { | |
d310310c | 4176 | freezable_schedule_timeout_killable(timeout); |
1da177e4 LT |
4177 | timeout <<= 1; |
4178 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
4179 | return NFS4_LOCK_MAXTIMEOUT; | |
4180 | return timeout; | |
4181 | } | |
4182 | ||
1da177e4 LT |
4183 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4184 | { | |
4185 | struct inode *inode = state->inode; | |
4186 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 4187 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 4188 | struct nfs_lockt_args arg = { |
1da177e4 | 4189 | .fh = NFS_FH(inode), |
911d1aaf | 4190 | .fl = request, |
1da177e4 | 4191 | }; |
911d1aaf TM |
4192 | struct nfs_lockt_res res = { |
4193 | .denied = request, | |
1da177e4 LT |
4194 | }; |
4195 | struct rpc_message msg = { | |
4196 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
4197 | .rpc_argp = &arg, | |
4198 | .rpc_resp = &res, | |
4199 | .rpc_cred = state->owner->so_cred, | |
4200 | }; | |
1da177e4 LT |
4201 | struct nfs4_lock_state *lsp; |
4202 | int status; | |
4203 | ||
911d1aaf | 4204 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
4205 | status = nfs4_set_lock_state(state, request); |
4206 | if (status != 0) | |
4207 | goto out; | |
4208 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 4209 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4210 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 4211 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
4212 | switch (status) { |
4213 | case 0: | |
4214 | request->fl_type = F_UNLCK; | |
4215 | break; | |
4216 | case -NFS4ERR_DENIED: | |
4217 | status = 0; | |
1da177e4 | 4218 | } |
70cc6487 | 4219 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 4220 | out: |
1da177e4 LT |
4221 | return status; |
4222 | } | |
4223 | ||
4224 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4225 | { | |
4226 | struct nfs4_exception exception = { }; | |
4227 | int err; | |
4228 | ||
4229 | do { | |
4230 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
4231 | _nfs4_proc_getlk(state, cmd, request), | |
4232 | &exception); | |
4233 | } while (exception.retry); | |
4234 | return err; | |
4235 | } | |
4236 | ||
4237 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
4238 | { | |
4239 | int res = 0; | |
4240 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
4241 | case FL_POSIX: | |
4242 | res = posix_lock_file_wait(file, fl); | |
4243 | break; | |
4244 | case FL_FLOCK: | |
4245 | res = flock_lock_file_wait(file, fl); | |
4246 | break; | |
4247 | default: | |
4248 | BUG(); | |
4249 | } | |
1da177e4 LT |
4250 | return res; |
4251 | } | |
4252 | ||
faf5f49c | 4253 | struct nfs4_unlockdata { |
911d1aaf TM |
4254 | struct nfs_locku_args arg; |
4255 | struct nfs_locku_res res; | |
faf5f49c TM |
4256 | struct nfs4_lock_state *lsp; |
4257 | struct nfs_open_context *ctx; | |
911d1aaf TM |
4258 | struct file_lock fl; |
4259 | const struct nfs_server *server; | |
26e976a8 | 4260 | unsigned long timestamp; |
faf5f49c TM |
4261 | }; |
4262 | ||
911d1aaf TM |
4263 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
4264 | struct nfs_open_context *ctx, | |
4265 | struct nfs4_lock_state *lsp, | |
4266 | struct nfs_seqid *seqid) | |
4267 | { | |
4268 | struct nfs4_unlockdata *p; | |
4269 | struct inode *inode = lsp->ls_state->inode; | |
4270 | ||
8535b2be | 4271 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
4272 | if (p == NULL) |
4273 | return NULL; | |
4274 | p->arg.fh = NFS_FH(inode); | |
4275 | p->arg.fl = &p->fl; | |
4276 | p->arg.seqid = seqid; | |
c1d51931 | 4277 | p->res.seqid = seqid; |
911d1aaf TM |
4278 | p->arg.stateid = &lsp->ls_stateid; |
4279 | p->lsp = lsp; | |
4280 | atomic_inc(&lsp->ls_count); | |
4281 | /* Ensure we don't close file until we're done freeing locks! */ | |
4282 | p->ctx = get_nfs_open_context(ctx); | |
4283 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4284 | p->server = NFS_SERVER(inode); | |
4285 | return p; | |
4286 | } | |
4287 | ||
06f814a3 | 4288 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 4289 | { |
963d8fe5 | 4290 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 4291 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
4292 | nfs4_put_lock_state(calldata->lsp); |
4293 | put_nfs_open_context(calldata->ctx); | |
4294 | kfree(calldata); | |
faf5f49c TM |
4295 | } |
4296 | ||
963d8fe5 | 4297 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 4298 | { |
963d8fe5 | 4299 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4300 | |
14516c3a TM |
4301 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
4302 | return; | |
faf5f49c TM |
4303 | switch (task->tk_status) { |
4304 | case 0: | |
f597c537 TM |
4305 | nfs4_stateid_copy(&calldata->lsp->ls_stateid, |
4306 | &calldata->res.stateid); | |
26e976a8 | 4307 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 4308 | break; |
9e33bed5 TM |
4309 | case -NFS4ERR_BAD_STATEID: |
4310 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
4311 | case -NFS4ERR_STALE_STATEID: |
4312 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
4313 | break; |
4314 | default: | |
9e33bed5 | 4315 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
d00c5d43 | 4316 | rpc_restart_call_prepare(task); |
faf5f49c | 4317 | } |
faf5f49c TM |
4318 | } |
4319 | ||
4ce70ada | 4320 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 4321 | { |
4ce70ada | 4322 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4323 | |
911d1aaf | 4324 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c TM |
4325 | return; |
4326 | if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) { | |
963d8fe5 TM |
4327 | /* Note: exit _without_ running nfs4_locku_done */ |
4328 | task->tk_action = NULL; | |
faf5f49c TM |
4329 | return; |
4330 | } | |
26e976a8 | 4331 | calldata->timestamp = jiffies; |
035168ab | 4332 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 4333 | &calldata->arg.seq_args, |
9d12b216 | 4334 | &calldata->res.seq_res, task)) |
a893693c | 4335 | return; |
5138fde0 | 4336 | rpc_call_start(task); |
faf5f49c TM |
4337 | } |
4338 | ||
963d8fe5 | 4339 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 4340 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 4341 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 4342 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
4343 | }; |
4344 | ||
a5d16a4d TM |
4345 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
4346 | struct nfs_open_context *ctx, | |
4347 | struct nfs4_lock_state *lsp, | |
4348 | struct nfs_seqid *seqid) | |
4349 | { | |
4350 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
4351 | struct rpc_message msg = { |
4352 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
4353 | .rpc_cred = ctx->cred, | |
4354 | }; | |
c970aa85 TM |
4355 | struct rpc_task_setup task_setup_data = { |
4356 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 4357 | .rpc_message = &msg, |
c970aa85 | 4358 | .callback_ops = &nfs4_locku_ops, |
101070ca | 4359 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4360 | .flags = RPC_TASK_ASYNC, |
4361 | }; | |
a5d16a4d | 4362 | |
137d6aca FF |
4363 | /* Ensure this is an unlock - when canceling a lock, the |
4364 | * canceled lock is passed in, and it won't be an unlock. | |
4365 | */ | |
4366 | fl->fl_type = F_UNLCK; | |
4367 | ||
a5d16a4d TM |
4368 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
4369 | if (data == NULL) { | |
4370 | nfs_free_seqid(seqid); | |
4371 | return ERR_PTR(-ENOMEM); | |
4372 | } | |
4373 | ||
9d12b216 | 4374 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4375 | msg.rpc_argp = &data->arg; |
4376 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4377 | task_setup_data.callback_data = data; |
4378 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
4379 | } |
4380 | ||
faf5f49c TM |
4381 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
4382 | { | |
19e03c57 | 4383 | struct nfs_inode *nfsi = NFS_I(state->inode); |
911d1aaf | 4384 | struct nfs_seqid *seqid; |
1da177e4 | 4385 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
4386 | struct rpc_task *task; |
4387 | int status = 0; | |
536ff0f8 | 4388 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 4389 | |
8d0a8a9d | 4390 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
4391 | /* Unlock _before_ we do the RPC call */ |
4392 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
4393 | down_read(&nfsi->rwsem); |
4394 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
4395 | up_read(&nfsi->rwsem); | |
9b073574 | 4396 | goto out; |
19e03c57 TM |
4397 | } |
4398 | up_read(&nfsi->rwsem); | |
8d0a8a9d | 4399 | if (status != 0) |
9b073574 TM |
4400 | goto out; |
4401 | /* Is this a delegated lock? */ | |
4402 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
4403 | goto out; | |
8d0a8a9d | 4404 | lsp = request->fl_u.nfs4_fl.owner; |
8535b2be | 4405 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 4406 | status = -ENOMEM; |
911d1aaf | 4407 | if (seqid == NULL) |
9b073574 | 4408 | goto out; |
cd3758e3 | 4409 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
4410 | status = PTR_ERR(task); |
4411 | if (IS_ERR(task)) | |
9b073574 | 4412 | goto out; |
a5d16a4d | 4413 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 4414 | rpc_put_task(task); |
9b073574 | 4415 | out: |
536ff0f8 | 4416 | request->fl_flags = fl_flags; |
1da177e4 LT |
4417 | return status; |
4418 | } | |
4419 | ||
a5d16a4d TM |
4420 | struct nfs4_lockdata { |
4421 | struct nfs_lock_args arg; | |
4422 | struct nfs_lock_res res; | |
4423 | struct nfs4_lock_state *lsp; | |
4424 | struct nfs_open_context *ctx; | |
4425 | struct file_lock fl; | |
26e976a8 | 4426 | unsigned long timestamp; |
a5d16a4d TM |
4427 | int rpc_status; |
4428 | int cancelled; | |
66179efe | 4429 | struct nfs_server *server; |
a5d16a4d TM |
4430 | }; |
4431 | ||
4432 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
4433 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
4434 | gfp_t gfp_mask) | |
1da177e4 | 4435 | { |
a5d16a4d TM |
4436 | struct nfs4_lockdata *p; |
4437 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 4438 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 4439 | |
8535b2be | 4440 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
4441 | if (p == NULL) |
4442 | return NULL; | |
4443 | ||
4444 | p->arg.fh = NFS_FH(inode); | |
4445 | p->arg.fl = &p->fl; | |
8535b2be | 4446 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4447 | if (p->arg.open_seqid == NULL) |
4448 | goto out_free; | |
8535b2be | 4449 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4450 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4451 | goto out_free_seqid; |
a5d16a4d | 4452 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4453 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 4454 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4455 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 4456 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4457 | p->lsp = lsp; |
66179efe | 4458 | p->server = server; |
a5d16a4d TM |
4459 | atomic_inc(&lsp->ls_count); |
4460 | p->ctx = get_nfs_open_context(ctx); | |
4461 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4462 | return p; | |
2f74c0a0 TM |
4463 | out_free_seqid: |
4464 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4465 | out_free: |
4466 | kfree(p); | |
4467 | return NULL; | |
4468 | } | |
4469 | ||
4470 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4471 | { | |
4472 | struct nfs4_lockdata *data = calldata; | |
4473 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4474 | |
3110ff80 | 4475 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
4476 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
4477 | return; | |
a5d16a4d TM |
4478 | /* Do we need to do an open_to_lock_owner? */ |
4479 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 TM |
4480 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
4481 | return; | |
a5d16a4d TM |
4482 | data->arg.open_stateid = &state->stateid; |
4483 | data->arg.new_lock_owner = 1; | |
c1d51931 | 4484 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4485 | } else |
4486 | data->arg.new_lock_owner = 0; | |
26e976a8 | 4487 | data->timestamp = jiffies; |
035168ab TM |
4488 | if (nfs4_setup_sequence(data->server, |
4489 | &data->arg.seq_args, | |
9d12b216 | 4490 | &data->res.seq_res, task)) |
66179efe | 4491 | return; |
5138fde0 | 4492 | rpc_call_start(task); |
3110ff80 | 4493 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
a5d16a4d TM |
4494 | } |
4495 | ||
b257957e AB |
4496 | static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata) |
4497 | { | |
4498 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
4499 | nfs4_lock_prepare(task, calldata); | |
4500 | } | |
4501 | ||
a5d16a4d TM |
4502 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4503 | { | |
4504 | struct nfs4_lockdata *data = calldata; | |
4505 | ||
3110ff80 | 4506 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4507 | |
14516c3a TM |
4508 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4509 | return; | |
66179efe | 4510 | |
a5d16a4d | 4511 | data->rpc_status = task->tk_status; |
a5d16a4d | 4512 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4513 | if (data->rpc_status == 0) |
4514 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4515 | else | |
4516 | goto out; | |
4517 | } | |
4518 | if (data->rpc_status == 0) { | |
f597c537 | 4519 | nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid); |
a5d16a4d | 4520 | data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; |
3d4ff43d | 4521 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 4522 | } |
a5d16a4d | 4523 | out: |
3110ff80 | 4524 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4525 | } |
4526 | ||
4527 | static void nfs4_lock_release(void *calldata) | |
4528 | { | |
4529 | struct nfs4_lockdata *data = calldata; | |
4530 | ||
3110ff80 | 4531 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4532 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4533 | if (data->cancelled != 0) { |
4534 | struct rpc_task *task; | |
4535 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4536 | data->arg.lock_seqid); | |
4537 | if (!IS_ERR(task)) | |
bf294b41 | 4538 | rpc_put_task_async(task); |
3110ff80 | 4539 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4540 | } else |
4541 | nfs_free_seqid(data->arg.lock_seqid); | |
4542 | nfs4_put_lock_state(data->lsp); | |
4543 | put_nfs_open_context(data->ctx); | |
4544 | kfree(data); | |
3110ff80 | 4545 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4546 | } |
4547 | ||
4548 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4549 | .rpc_call_prepare = nfs4_lock_prepare, | |
4550 | .rpc_call_done = nfs4_lock_done, | |
4551 | .rpc_release = nfs4_lock_release, | |
4552 | }; | |
4553 | ||
b257957e AB |
4554 | static const struct rpc_call_ops nfs4_recover_lock_ops = { |
4555 | .rpc_call_prepare = nfs4_recover_lock_prepare, | |
4556 | .rpc_call_done = nfs4_lock_done, | |
4557 | .rpc_release = nfs4_lock_release, | |
4558 | }; | |
4559 | ||
2bee72a6 TM |
4560 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4561 | { | |
2bee72a6 TM |
4562 | switch (error) { |
4563 | case -NFS4ERR_ADMIN_REVOKED: | |
4564 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 4565 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 TM |
4566 | if (new_lock_owner != 0 || |
4567 | (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0) | |
ecac799a | 4568 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
4569 | break; |
4570 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 4571 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
4572 | case -NFS4ERR_EXPIRED: |
4573 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
4574 | }; |
4575 | } | |
4576 | ||
afe6c27c | 4577 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4578 | { |
4579 | struct nfs4_lockdata *data; | |
4580 | struct rpc_task *task; | |
5138fde0 TM |
4581 | struct rpc_message msg = { |
4582 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4583 | .rpc_cred = state->owner->so_cred, | |
4584 | }; | |
c970aa85 TM |
4585 | struct rpc_task_setup task_setup_data = { |
4586 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4587 | .rpc_message = &msg, |
c970aa85 | 4588 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4589 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4590 | .flags = RPC_TASK_ASYNC, |
4591 | }; | |
a5d16a4d TM |
4592 | int ret; |
4593 | ||
3110ff80 | 4594 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4595 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4596 | fl->fl_u.nfs4_fl.owner, |
4597 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4598 | if (data == NULL) |
4599 | return -ENOMEM; | |
4600 | if (IS_SETLKW(cmd)) | |
4601 | data->arg.block = 1; | |
b257957e AB |
4602 | if (recovery_type > NFS_LOCK_NEW) { |
4603 | if (recovery_type == NFS_LOCK_RECLAIM) | |
afe6c27c | 4604 | data->arg.reclaim = NFS_LOCK_RECLAIM; |
b257957e AB |
4605 | task_setup_data.callback_ops = &nfs4_recover_lock_ops; |
4606 | } | |
9d12b216 | 4607 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4608 | msg.rpc_argp = &data->arg; |
4609 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4610 | task_setup_data.callback_data = data; |
4611 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 4612 | if (IS_ERR(task)) |
a5d16a4d | 4613 | return PTR_ERR(task); |
a5d16a4d TM |
4614 | ret = nfs4_wait_for_completion_rpc_task(task); |
4615 | if (ret == 0) { | |
4616 | ret = data->rpc_status; | |
2bee72a6 TM |
4617 | if (ret) |
4618 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4619 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4620 | } else |
4621 | data->cancelled = 1; | |
e6b3c4db | 4622 | rpc_put_task(task); |
3110ff80 | 4623 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4624 | return ret; |
1da177e4 LT |
4625 | } |
4626 | ||
4627 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4628 | { | |
202b50dc | 4629 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4630 | struct nfs4_exception exception = { |
4631 | .inode = state->inode, | |
4632 | }; | |
202b50dc TM |
4633 | int err; |
4634 | ||
4635 | do { | |
42a2d13e TM |
4636 | /* Cache the lock if possible... */ |
4637 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4638 | return 0; | |
afe6c27c | 4639 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 4640 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
4641 | break; |
4642 | nfs4_handle_exception(server, err, &exception); | |
4643 | } while (exception.retry); | |
4644 | return err; | |
1da177e4 LT |
4645 | } |
4646 | ||
4647 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4648 | { | |
202b50dc | 4649 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4650 | struct nfs4_exception exception = { |
4651 | .inode = state->inode, | |
4652 | }; | |
202b50dc TM |
4653 | int err; |
4654 | ||
6bfc93ef TM |
4655 | err = nfs4_set_lock_state(state, request); |
4656 | if (err != 0) | |
4657 | return err; | |
202b50dc | 4658 | do { |
42a2d13e TM |
4659 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4660 | return 0; | |
afe6c27c | 4661 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
4662 | switch (err) { |
4663 | default: | |
4664 | goto out; | |
4665 | case -NFS4ERR_GRACE: | |
4666 | case -NFS4ERR_DELAY: | |
4667 | nfs4_handle_exception(server, err, &exception); | |
4668 | err = 0; | |
4669 | } | |
202b50dc | 4670 | } while (exception.retry); |
a9ed2e25 | 4671 | out: |
202b50dc | 4672 | return err; |
1da177e4 LT |
4673 | } |
4674 | ||
f062eb6c | 4675 | #if defined(CONFIG_NFS_V4_1) |
b01dd1d8 | 4676 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 4677 | { |
b01dd1d8 BS |
4678 | int status, ret = NFS_OK; |
4679 | struct nfs4_lock_state *lsp; | |
f062eb6c BS |
4680 | struct nfs_server *server = NFS_SERVER(state->inode); |
4681 | ||
b01dd1d8 BS |
4682 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
4683 | if (lsp->ls_flags & NFS_LOCK_INITIALIZED) { | |
4684 | status = nfs41_test_stateid(server, &lsp->ls_stateid); | |
4685 | if (status != NFS_OK) { | |
4686 | nfs41_free_stateid(server, &lsp->ls_stateid); | |
4687 | lsp->ls_flags &= ~NFS_LOCK_INITIALIZED; | |
4688 | ret = status; | |
4689 | } | |
4690 | } | |
4691 | }; | |
4692 | ||
4693 | return ret; | |
4694 | } | |
4695 | ||
4696 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4697 | { | |
4698 | int status = NFS_OK; | |
4699 | ||
4700 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
4701 | status = nfs41_check_expired_locks(state); | |
f062eb6c | 4702 | if (status == NFS_OK) |
b01dd1d8 | 4703 | return status; |
f062eb6c BS |
4704 | return nfs4_lock_expired(state, request); |
4705 | } | |
4706 | #endif | |
4707 | ||
1da177e4 LT |
4708 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4709 | { | |
19e03c57 | 4710 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 4711 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 4712 | int status = -ENOLCK; |
1da177e4 | 4713 | |
8e469ebd TM |
4714 | if ((fl_flags & FL_POSIX) && |
4715 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
4716 | goto out; | |
6bfc93ef | 4717 | /* Is this a delegated open? */ |
6bfc93ef TM |
4718 | status = nfs4_set_lock_state(state, request); |
4719 | if (status != 0) | |
4720 | goto out; | |
01c3b861 TM |
4721 | request->fl_flags |= FL_ACCESS; |
4722 | status = do_vfs_lock(request->fl_file, request); | |
4723 | if (status < 0) | |
4724 | goto out; | |
19e03c57 | 4725 | down_read(&nfsi->rwsem); |
01c3b861 | 4726 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 4727 | /* Yes: cache locks! */ |
01c3b861 | 4728 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
4729 | request->fl_flags = fl_flags & ~FL_SLEEP; |
4730 | status = do_vfs_lock(request->fl_file, request); | |
4731 | goto out_unlock; | |
01c3b861 | 4732 | } |
afe6c27c | 4733 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 4734 | if (status != 0) |
01c3b861 | 4735 | goto out_unlock; |
6bfc93ef | 4736 | /* Note: we always want to sleep here! */ |
01c3b861 | 4737 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 4738 | if (do_vfs_lock(request->fl_file, request) < 0) |
a030889a WAA |
4739 | printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " |
4740 | "manager!\n", __func__); | |
01c3b861 | 4741 | out_unlock: |
19e03c57 | 4742 | up_read(&nfsi->rwsem); |
01c3b861 TM |
4743 | out: |
4744 | request->fl_flags = fl_flags; | |
1da177e4 LT |
4745 | return status; |
4746 | } | |
4747 | ||
4748 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4749 | { | |
a1d0b5ee TM |
4750 | struct nfs4_exception exception = { |
4751 | .state = state, | |
05ffe24f | 4752 | .inode = state->inode, |
a1d0b5ee | 4753 | }; |
1da177e4 LT |
4754 | int err; |
4755 | ||
4756 | do { | |
965b5d67 TM |
4757 | err = _nfs4_proc_setlk(state, cmd, request); |
4758 | if (err == -NFS4ERR_DENIED) | |
4759 | err = -EAGAIN; | |
1da177e4 | 4760 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 4761 | err, &exception); |
1da177e4 LT |
4762 | } while (exception.retry); |
4763 | return err; | |
4764 | } | |
4765 | ||
4766 | static int | |
4767 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
4768 | { | |
4769 | struct nfs_open_context *ctx; | |
4770 | struct nfs4_state *state; | |
4771 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
4772 | int status; | |
4773 | ||
4774 | /* verify open state */ | |
cd3758e3 | 4775 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
4776 | state = ctx->state; |
4777 | ||
4778 | if (request->fl_start < 0 || request->fl_end < 0) | |
4779 | return -EINVAL; | |
4780 | ||
d953126a TM |
4781 | if (IS_GETLK(cmd)) { |
4782 | if (state != NULL) | |
4783 | return nfs4_proc_getlk(state, F_GETLK, request); | |
4784 | return 0; | |
4785 | } | |
1da177e4 LT |
4786 | |
4787 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
4788 | return -EINVAL; | |
4789 | ||
d953126a TM |
4790 | if (request->fl_type == F_UNLCK) { |
4791 | if (state != NULL) | |
4792 | return nfs4_proc_unlck(state, cmd, request); | |
4793 | return 0; | |
4794 | } | |
1da177e4 | 4795 | |
d953126a TM |
4796 | if (state == NULL) |
4797 | return -ENOLCK; | |
55725513 TM |
4798 | /* |
4799 | * Don't rely on the VFS having checked the file open mode, | |
4800 | * since it won't do this for flock() locks. | |
4801 | */ | |
4802 | switch (request->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) { | |
4803 | case F_RDLCK: | |
4804 | if (!(filp->f_mode & FMODE_READ)) | |
4805 | return -EBADF; | |
4806 | break; | |
4807 | case F_WRLCK: | |
4808 | if (!(filp->f_mode & FMODE_WRITE)) | |
4809 | return -EBADF; | |
4810 | } | |
4811 | ||
1da177e4 LT |
4812 | do { |
4813 | status = nfs4_proc_setlk(state, cmd, request); | |
4814 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
4815 | break; | |
4816 | timeout = nfs4_set_lock_task_retry(timeout); | |
4817 | status = -ERESTARTSYS; | |
4818 | if (signalled()) | |
4819 | break; | |
4820 | } while(status < 0); | |
1da177e4 LT |
4821 | return status; |
4822 | } | |
4823 | ||
888e694c TM |
4824 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
4825 | { | |
4826 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4827 | struct nfs4_exception exception = { }; | |
4828 | int err; | |
4829 | ||
4830 | err = nfs4_set_lock_state(state, fl); | |
4831 | if (err != 0) | |
4832 | goto out; | |
4833 | do { | |
afe6c27c | 4834 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
d5122201 TM |
4835 | switch (err) { |
4836 | default: | |
a030889a WAA |
4837 | printk(KERN_ERR "NFS: %s: unhandled error " |
4838 | "%d.\n", __func__, err); | |
d5122201 | 4839 | case 0: |
965b5d67 | 4840 | case -ESTALE: |
d5122201 TM |
4841 | goto out; |
4842 | case -NFS4ERR_EXPIRED: | |
0ced63d1 | 4843 | nfs4_schedule_stateid_recovery(server, state); |
d5122201 | 4844 | case -NFS4ERR_STALE_CLIENTID: |
965b5d67 | 4845 | case -NFS4ERR_STALE_STATEID: |
0400a6b0 TM |
4846 | nfs4_schedule_lease_recovery(server->nfs_client); |
4847 | goto out; | |
74e7bb73 RL |
4848 | case -NFS4ERR_BADSESSION: |
4849 | case -NFS4ERR_BADSLOT: | |
4850 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4851 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4852 | case -NFS4ERR_DEADSESSION: | |
0400a6b0 | 4853 | nfs4_schedule_session_recovery(server->nfs_client->cl_session); |
d5122201 | 4854 | goto out; |
965b5d67 TM |
4855 | case -ERESTARTSYS: |
4856 | /* | |
4857 | * The show must go on: exit, but mark the | |
4858 | * stateid as needing recovery. | |
4859 | */ | |
a1d0b5ee | 4860 | case -NFS4ERR_DELEG_REVOKED: |
965b5d67 TM |
4861 | case -NFS4ERR_ADMIN_REVOKED: |
4862 | case -NFS4ERR_BAD_STATEID: | |
4863 | case -NFS4ERR_OPENMODE: | |
0400a6b0 | 4864 | nfs4_schedule_stateid_recovery(server, state); |
965b5d67 TM |
4865 | err = 0; |
4866 | goto out; | |
168667c4 TM |
4867 | case -EKEYEXPIRED: |
4868 | /* | |
4869 | * User RPCSEC_GSS context has expired. | |
4870 | * We cannot recover this stateid now, so | |
4871 | * skip it and allow recovery thread to | |
4872 | * proceed. | |
4873 | */ | |
4874 | err = 0; | |
4875 | goto out; | |
965b5d67 TM |
4876 | case -ENOMEM: |
4877 | case -NFS4ERR_DENIED: | |
4878 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
4879 | err = 0; | |
4880 | goto out; | |
d5122201 TM |
4881 | case -NFS4ERR_DELAY: |
4882 | break; | |
4883 | } | |
888e694c TM |
4884 | err = nfs4_handle_exception(server, err, &exception); |
4885 | } while (exception.retry); | |
4886 | out: | |
4887 | return err; | |
4888 | } | |
6b3b5496 | 4889 | |
cf470c3e TM |
4890 | struct nfs_release_lockowner_data { |
4891 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 4892 | struct nfs_server *server; |
cf470c3e TM |
4893 | struct nfs_release_lockowner_args args; |
4894 | }; | |
4895 | ||
d3c7b7cc TM |
4896 | static void nfs4_release_lockowner_release(void *calldata) |
4897 | { | |
cf470c3e | 4898 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 4899 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
4900 | kfree(calldata); |
4901 | } | |
4902 | ||
17280175 | 4903 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
d3c7b7cc TM |
4904 | .rpc_release = nfs4_release_lockowner_release, |
4905 | }; | |
4906 | ||
cf470c3e | 4907 | int nfs4_release_lockowner(struct nfs4_lock_state *lsp) |
d3c7b7cc TM |
4908 | { |
4909 | struct nfs_server *server = lsp->ls_state->owner->so_server; | |
cf470c3e | 4910 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
4911 | struct rpc_message msg = { |
4912 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
4913 | }; | |
4914 | ||
4915 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
cf470c3e TM |
4916 | return -EINVAL; |
4917 | data = kmalloc(sizeof(*data), GFP_NOFS); | |
4918 | if (!data) | |
4919 | return -ENOMEM; | |
4920 | data->lsp = lsp; | |
5ae67c4f | 4921 | data->server = server; |
cf470c3e TM |
4922 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
4923 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
4924 | data->args.lock_owner.s_dev = server->s_dev; | |
4925 | msg.rpc_argp = &data->args; | |
4926 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); | |
4927 | return 0; | |
d3c7b7cc TM |
4928 | } |
4929 | ||
aa1870af BF |
4930 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
4931 | ||
64c2ce8b AK |
4932 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
4933 | const void *buf, size_t buflen, | |
4934 | int flags, int type) | |
6b3b5496 | 4935 | { |
64c2ce8b AK |
4936 | if (strcmp(key, "") != 0) |
4937 | return -EINVAL; | |
4b580ee3 | 4938 | |
64c2ce8b | 4939 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4940 | } |
4941 | ||
64c2ce8b AK |
4942 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
4943 | void *buf, size_t buflen, int type) | |
6b3b5496 | 4944 | { |
64c2ce8b AK |
4945 | if (strcmp(key, "") != 0) |
4946 | return -EINVAL; | |
aa1870af | 4947 | |
64c2ce8b | 4948 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4949 | } |
4950 | ||
64c2ce8b AK |
4951 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
4952 | size_t list_len, const char *name, | |
4953 | size_t name_len, int type) | |
6b3b5496 | 4954 | { |
64c2ce8b | 4955 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 4956 | |
096455a2 BF |
4957 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
4958 | return 0; | |
64c2ce8b AK |
4959 | |
4960 | if (list && len <= list_len) | |
4961 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 4962 | return len; |
6b3b5496 BF |
4963 | } |
4964 | ||
533eb461 AA |
4965 | /* |
4966 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
4967 | */ | |
69aaaae1 TM |
4968 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
4969 | { | |
533eb461 AA |
4970 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
4971 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
4972 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 4973 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
4974 | return; |
4975 | ||
4976 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 4977 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
4978 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
4979 | fattr->nlink = 2; | |
4980 | } | |
4981 | ||
f05d147f BS |
4982 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
4983 | const struct qstr *name, | |
4984 | struct nfs4_fs_locations *fs_locations, | |
4985 | struct page *page) | |
683b57b4 TM |
4986 | { |
4987 | struct nfs_server *server = NFS_SERVER(dir); | |
4988 | u32 bitmask[2] = { | |
361e624f | 4989 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
4990 | }; |
4991 | struct nfs4_fs_locations_arg args = { | |
4992 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 4993 | .name = name, |
683b57b4 TM |
4994 | .page = page, |
4995 | .bitmask = bitmask, | |
4996 | }; | |
22958463 BH |
4997 | struct nfs4_fs_locations_res res = { |
4998 | .fs_locations = fs_locations, | |
4999 | }; | |
683b57b4 TM |
5000 | struct rpc_message msg = { |
5001 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
5002 | .rpc_argp = &args, | |
22958463 | 5003 | .rpc_resp = &res, |
683b57b4 TM |
5004 | }; |
5005 | int status; | |
5006 | ||
3110ff80 | 5007 | dprintk("%s: start\n", __func__); |
533eb461 AA |
5008 | |
5009 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
5010 | * is not supported */ | |
5011 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
5012 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
5013 | else | |
5014 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
5015 | ||
c228fd3a | 5016 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 5017 | fs_locations->server = server; |
830b8e33 | 5018 | fs_locations->nlocations = 0; |
f05d147f | 5019 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 5020 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
5021 | return status; |
5022 | } | |
5023 | ||
f05d147f BS |
5024 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5025 | const struct qstr *name, | |
5026 | struct nfs4_fs_locations *fs_locations, | |
5027 | struct page *page) | |
db0a9593 BS |
5028 | { |
5029 | struct nfs4_exception exception = { }; | |
5030 | int err; | |
5031 | do { | |
5032 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
f05d147f | 5033 | _nfs4_proc_fs_locations(client, dir, name, fs_locations, page), |
db0a9593 BS |
5034 | &exception); |
5035 | } while (exception.retry); | |
5036 | return err; | |
5037 | } | |
5038 | ||
5a5ea0d4 BS |
5039 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) |
5040 | { | |
5041 | int status; | |
5042 | struct nfs4_secinfo_arg args = { | |
5043 | .dir_fh = NFS_FH(dir), | |
5044 | .name = name, | |
5045 | }; | |
5046 | struct nfs4_secinfo_res res = { | |
5047 | .flavors = flavors, | |
5048 | }; | |
5049 | struct rpc_message msg = { | |
5050 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
5051 | .rpc_argp = &args, | |
5052 | .rpc_resp = &res, | |
5053 | }; | |
5054 | ||
5055 | dprintk("NFS call secinfo %s\n", name->name); | |
5056 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); | |
5057 | dprintk("NFS reply secinfo: %d\n", status); | |
5058 | return status; | |
5059 | } | |
5060 | ||
72de53ec BS |
5061 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
5062 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
5063 | { |
5064 | struct nfs4_exception exception = { }; | |
5065 | int err; | |
5066 | do { | |
5067 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
5068 | _nfs4_proc_secinfo(dir, name, flavors), | |
5069 | &exception); | |
5070 | } while (exception.retry); | |
5071 | return err; | |
5072 | } | |
5073 | ||
557134a3 | 5074 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
5075 | /* |
5076 | * Check the exchange flags returned by the server for invalid flags, having | |
5077 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
5078 | * DS flags set. | |
5079 | */ | |
5080 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
5081 | { | |
5082 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
5083 | goto out_inval; | |
5084 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
5085 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
5086 | goto out_inval; | |
5087 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
5088 | goto out_inval; | |
5089 | return NFS_OK; | |
5090 | out_inval: | |
5091 | return -NFS4ERR_INVAL; | |
5092 | } | |
5093 | ||
78fe0f41 WAA |
5094 | static bool |
5095 | nfs41_same_server_scope(struct server_scope *a, struct server_scope *b) | |
5096 | { | |
5097 | if (a->server_scope_sz == b->server_scope_sz && | |
5098 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
5099 | return true; | |
5100 | ||
5101 | return false; | |
5102 | } | |
5103 | ||
99fe60d0 BH |
5104 | /* |
5105 | * nfs4_proc_exchange_id() | |
5106 | * | |
5107 | * Since the clientid has expired, all compounds using sessions | |
5108 | * associated with the stale clientid will be returning | |
5109 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
5110 | * be in some phase of session reset. | |
5111 | */ | |
4d643d1d | 5112 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
5113 | { |
5114 | nfs4_verifier verifier; | |
5115 | struct nfs41_exchange_id_args args = { | |
cd93710e | 5116 | .verifier = &verifier, |
99fe60d0 | 5117 | .client = clp, |
357f54d6 | 5118 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, |
99fe60d0 BH |
5119 | }; |
5120 | struct nfs41_exchange_id_res res = { | |
5121 | .client = clp, | |
5122 | }; | |
5123 | int status; | |
5124 | struct rpc_message msg = { | |
5125 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
5126 | .rpc_argp = &args, | |
5127 | .rpc_resp = &res, | |
5128 | .rpc_cred = cred, | |
5129 | }; | |
99fe60d0 BH |
5130 | |
5131 | dprintk("--> %s\n", __func__); | |
5132 | BUG_ON(clp == NULL); | |
a7b72103 | 5133 | |
cd93710e | 5134 | nfs4_construct_boot_verifier(clp, &verifier); |
99fe60d0 | 5135 | |
c7a360b0 AA |
5136 | args.id_len = scnprintf(args.id, sizeof(args.id), |
5137 | "%s/%s.%s/%u", | |
5138 | clp->cl_ipaddr, | |
5139 | init_utsname()->nodename, | |
5140 | init_utsname()->domainname, | |
5141 | clp->cl_rpcclient->cl_auth->au_flavor); | |
99fe60d0 | 5142 | |
78fe0f41 | 5143 | res.server_scope = kzalloc(sizeof(struct server_scope), GFP_KERNEL); |
abe9a6d5 WAA |
5144 | if (unlikely(!res.server_scope)) { |
5145 | status = -ENOMEM; | |
5146 | goto out; | |
5147 | } | |
78fe0f41 | 5148 | |
7d2ed9ac WAA |
5149 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_KERNEL); |
5150 | if (unlikely(!res.impl_id)) { | |
5151 | status = -ENOMEM; | |
5152 | goto out_server_scope; | |
5153 | } | |
5154 | ||
1bd714f2 | 5155 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c7a360b0 AA |
5156 | if (!status) |
5157 | status = nfs4_check_cl_exchange_flags(clp->cl_exchange_flags); | |
78fe0f41 | 5158 | |
7d2ed9ac WAA |
5159 | if (!status) { |
5160 | /* use the most recent implementation id */ | |
5161 | kfree(clp->impl_id); | |
5162 | clp->impl_id = res.impl_id; | |
5163 | } else | |
5164 | kfree(res.impl_id); | |
5165 | ||
78fe0f41 WAA |
5166 | if (!status) { |
5167 | if (clp->server_scope && | |
5168 | !nfs41_same_server_scope(clp->server_scope, | |
5169 | res.server_scope)) { | |
5170 | dprintk("%s: server_scope mismatch detected\n", | |
5171 | __func__); | |
5172 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
5173 | kfree(clp->server_scope); | |
5174 | clp->server_scope = NULL; | |
5175 | } | |
5176 | ||
abe9a6d5 | 5177 | if (!clp->server_scope) { |
78fe0f41 | 5178 | clp->server_scope = res.server_scope; |
abe9a6d5 WAA |
5179 | goto out; |
5180 | } | |
78fe0f41 | 5181 | } |
7d2ed9ac WAA |
5182 | |
5183 | out_server_scope: | |
abe9a6d5 WAA |
5184 | kfree(res.server_scope); |
5185 | out: | |
7d2ed9ac WAA |
5186 | if (clp->impl_id) |
5187 | dprintk("%s: Server Implementation ID: " | |
5188 | "domain: %s, name: %s, date: %llu,%u\n", | |
5189 | __func__, clp->impl_id->domain, clp->impl_id->name, | |
5190 | clp->impl_id->date.seconds, | |
5191 | clp->impl_id->date.nseconds); | |
99fe60d0 BH |
5192 | dprintk("<-- %s status= %d\n", __func__, status); |
5193 | return status; | |
5194 | } | |
5195 | ||
2050f0cc AA |
5196 | struct nfs4_get_lease_time_data { |
5197 | struct nfs4_get_lease_time_args *args; | |
5198 | struct nfs4_get_lease_time_res *res; | |
5199 | struct nfs_client *clp; | |
5200 | }; | |
5201 | ||
5202 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
5203 | void *calldata) | |
5204 | { | |
5205 | int ret; | |
5206 | struct nfs4_get_lease_time_data *data = | |
5207 | (struct nfs4_get_lease_time_data *)calldata; | |
5208 | ||
5209 | dprintk("--> %s\n", __func__); | |
689cf5c1 | 5210 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
2050f0cc AA |
5211 | /* just setup sequence, do not trigger session recovery |
5212 | since we're invoked within one */ | |
5213 | ret = nfs41_setup_sequence(data->clp->cl_session, | |
689cf5c1 | 5214 | &data->args->la_seq_args, |
9d12b216 | 5215 | &data->res->lr_seq_res, task); |
2050f0cc AA |
5216 | |
5217 | BUG_ON(ret == -EAGAIN); | |
5218 | rpc_call_start(task); | |
5219 | dprintk("<-- %s\n", __func__); | |
5220 | } | |
5221 | ||
5222 | /* | |
5223 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
5224 | * from sequence operation or clientid errors. | |
5225 | */ | |
5226 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
5227 | { | |
5228 | struct nfs4_get_lease_time_data *data = | |
5229 | (struct nfs4_get_lease_time_data *)calldata; | |
5230 | ||
5231 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5232 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
5233 | return; | |
2050f0cc AA |
5234 | switch (task->tk_status) { |
5235 | case -NFS4ERR_DELAY: | |
5236 | case -NFS4ERR_GRACE: | |
5237 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
5238 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
5239 | task->tk_status = 0; | |
a8a4ae3a AA |
5240 | /* fall through */ |
5241 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 5242 | rpc_restart_call_prepare(task); |
2050f0cc AA |
5243 | return; |
5244 | } | |
2050f0cc AA |
5245 | dprintk("<-- %s\n", __func__); |
5246 | } | |
5247 | ||
17280175 | 5248 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
5249 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
5250 | .rpc_call_done = nfs4_get_lease_time_done, | |
5251 | }; | |
5252 | ||
5253 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
5254 | { | |
5255 | struct rpc_task *task; | |
5256 | struct nfs4_get_lease_time_args args; | |
5257 | struct nfs4_get_lease_time_res res = { | |
5258 | .lr_fsinfo = fsinfo, | |
5259 | }; | |
5260 | struct nfs4_get_lease_time_data data = { | |
5261 | .args = &args, | |
5262 | .res = &res, | |
5263 | .clp = clp, | |
5264 | }; | |
5265 | struct rpc_message msg = { | |
5266 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
5267 | .rpc_argp = &args, | |
5268 | .rpc_resp = &res, | |
5269 | }; | |
5270 | struct rpc_task_setup task_setup = { | |
5271 | .rpc_client = clp->cl_rpcclient, | |
5272 | .rpc_message = &msg, | |
5273 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
5274 | .callback_data = &data, |
5275 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
5276 | }; |
5277 | int status; | |
5278 | ||
9d12b216 | 5279 | nfs41_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
2050f0cc AA |
5280 | dprintk("--> %s\n", __func__); |
5281 | task = rpc_run_task(&task_setup); | |
5282 | ||
5283 | if (IS_ERR(task)) | |
5284 | status = PTR_ERR(task); | |
5285 | else { | |
5286 | status = task->tk_status; | |
5287 | rpc_put_task(task); | |
5288 | } | |
5289 | dprintk("<-- %s return %d\n", __func__, status); | |
5290 | ||
5291 | return status; | |
5292 | } | |
5293 | ||
f86f36a6 TM |
5294 | static struct nfs4_slot *nfs4_alloc_slots(u32 max_slots, gfp_t gfp_flags) |
5295 | { | |
5296 | return kcalloc(max_slots, sizeof(struct nfs4_slot), gfp_flags); | |
5297 | } | |
5298 | ||
5299 | static void nfs4_add_and_init_slots(struct nfs4_slot_table *tbl, | |
5300 | struct nfs4_slot *new, | |
5301 | u32 max_slots, | |
5302 | u32 ivalue) | |
5303 | { | |
5304 | struct nfs4_slot *old = NULL; | |
5305 | u32 i; | |
5306 | ||
5307 | spin_lock(&tbl->slot_tbl_lock); | |
5308 | if (new) { | |
5309 | old = tbl->slots; | |
5310 | tbl->slots = new; | |
5311 | tbl->max_slots = max_slots; | |
5312 | } | |
5313 | tbl->highest_used_slotid = -1; /* no slot is currently used */ | |
5314 | for (i = 0; i < tbl->max_slots; i++) | |
5315 | tbl->slots[i].seq_nr = ivalue; | |
5316 | spin_unlock(&tbl->slot_tbl_lock); | |
5317 | kfree(old); | |
5318 | } | |
5319 | ||
b73dafa7 | 5320 | /* |
f86f36a6 | 5321 | * (re)Initialise a slot table |
b73dafa7 | 5322 | */ |
f86f36a6 TM |
5323 | static int nfs4_realloc_slot_table(struct nfs4_slot_table *tbl, u32 max_reqs, |
5324 | u32 ivalue) | |
ac72b7b3 | 5325 | { |
104aeba4 | 5326 | struct nfs4_slot *new = NULL; |
f86f36a6 | 5327 | int ret = -ENOMEM; |
ac72b7b3 | 5328 | |
104aeba4 AA |
5329 | dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__, |
5330 | max_reqs, tbl->max_slots); | |
ac72b7b3 | 5331 | |
104aeba4 AA |
5332 | /* Does the newly negotiated max_reqs match the existing slot table? */ |
5333 | if (max_reqs != tbl->max_slots) { | |
f86f36a6 | 5334 | new = nfs4_alloc_slots(max_reqs, GFP_NOFS); |
104aeba4 AA |
5335 | if (!new) |
5336 | goto out; | |
104aeba4 | 5337 | } |
f86f36a6 TM |
5338 | ret = 0; |
5339 | ||
5340 | nfs4_add_and_init_slots(tbl, new, max_reqs, ivalue); | |
ac72b7b3 AA |
5341 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, |
5342 | tbl, tbl->slots, tbl->max_slots); | |
5343 | out: | |
5344 | dprintk("<-- %s: return %d\n", __func__, ret); | |
5345 | return ret; | |
5346 | } | |
5347 | ||
f8625a6a RL |
5348 | /* Destroy the slot table */ |
5349 | static void nfs4_destroy_slot_tables(struct nfs4_session *session) | |
5350 | { | |
5351 | if (session->fc_slot_table.slots != NULL) { | |
5352 | kfree(session->fc_slot_table.slots); | |
5353 | session->fc_slot_table.slots = NULL; | |
5354 | } | |
5355 | if (session->bc_slot_table.slots != NULL) { | |
5356 | kfree(session->bc_slot_table.slots); | |
5357 | session->bc_slot_table.slots = NULL; | |
5358 | } | |
5359 | return; | |
5360 | } | |
5361 | ||
050047ce | 5362 | /* |
aacd5537 | 5363 | * Initialize or reset the forechannel and backchannel tables |
050047ce | 5364 | */ |
aacd5537 | 5365 | static int nfs4_setup_session_slot_tables(struct nfs4_session *ses) |
050047ce | 5366 | { |
f26468fb | 5367 | struct nfs4_slot_table *tbl; |
aacd5537 | 5368 | int status; |
050047ce | 5369 | |
aacd5537 AA |
5370 | dprintk("--> %s\n", __func__); |
5371 | /* Fore channel */ | |
5372 | tbl = &ses->fc_slot_table; | |
f86f36a6 TM |
5373 | status = nfs4_realloc_slot_table(tbl, ses->fc_attrs.max_reqs, 1); |
5374 | if (status) /* -ENOMEM */ | |
5375 | return status; | |
aacd5537 AA |
5376 | /* Back channel */ |
5377 | tbl = &ses->bc_slot_table; | |
f86f36a6 TM |
5378 | status = nfs4_realloc_slot_table(tbl, ses->bc_attrs.max_reqs, 0); |
5379 | if (status && tbl->slots == NULL) | |
5380 | /* Fore and back channel share a connection so get | |
5381 | * both slot tables or neither */ | |
5382 | nfs4_destroy_slot_tables(ses); | |
f8625a6a | 5383 | return status; |
557134a3 AA |
5384 | } |
5385 | ||
5386 | struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) | |
5387 | { | |
5388 | struct nfs4_session *session; | |
5389 | struct nfs4_slot_table *tbl; | |
5390 | ||
8535b2be | 5391 | session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); |
557134a3 AA |
5392 | if (!session) |
5393 | return NULL; | |
76db6d95 | 5394 | |
557134a3 | 5395 | tbl = &session->fc_slot_table; |
45d43c29 | 5396 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
557134a3 | 5397 | spin_lock_init(&tbl->slot_tbl_lock); |
689cf5c1 | 5398 | rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table"); |
42acd021 | 5399 | init_completion(&tbl->complete); |
f8625a6a RL |
5400 | |
5401 | tbl = &session->bc_slot_table; | |
45d43c29 | 5402 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
f8625a6a RL |
5403 | spin_lock_init(&tbl->slot_tbl_lock); |
5404 | rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table"); | |
42acd021 | 5405 | init_completion(&tbl->complete); |
f8625a6a | 5406 | |
1055d76d TM |
5407 | session->session_state = 1<<NFS4_SESSION_INITING; |
5408 | ||
557134a3 AA |
5409 | session->clp = clp; |
5410 | return session; | |
5411 | } | |
5412 | ||
5413 | void nfs4_destroy_session(struct nfs4_session *session) | |
5414 | { | |
2446ab60 TM |
5415 | struct rpc_xprt *xprt; |
5416 | ||
5a0ffe54 | 5417 | nfs4_proc_destroy_session(session); |
2446ab60 TM |
5418 | |
5419 | rcu_read_lock(); | |
5420 | xprt = rcu_dereference(session->clp->cl_rpcclient->cl_xprt); | |
5421 | rcu_read_unlock(); | |
5a0ffe54 | 5422 | dprintk("%s Destroy backchannel for xprt %p\n", |
2446ab60 TM |
5423 | __func__, xprt); |
5424 | xprt_destroy_backchannel(xprt, NFS41_BC_MIN_CALLBACKS); | |
f8625a6a | 5425 | nfs4_destroy_slot_tables(session); |
557134a3 AA |
5426 | kfree(session); |
5427 | } | |
5428 | ||
fc931582 AA |
5429 | /* |
5430 | * Initialize the values to be used by the client in CREATE_SESSION | |
5431 | * If nfs4_init_session set the fore channel request and response sizes, | |
5432 | * use them. | |
5433 | * | |
5434 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
5435 | * always set csa_cachethis to FALSE because the current implementation | |
5436 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
5437 | */ | |
5438 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
5439 | { | |
5440 | struct nfs4_session *session = args->client->cl_session; | |
5441 | unsigned int mxrqst_sz = session->fc_attrs.max_rqst_sz, | |
5442 | mxresp_sz = session->fc_attrs.max_resp_sz; | |
5443 | ||
5444 | if (mxrqst_sz == 0) | |
5445 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
5446 | if (mxresp_sz == 0) | |
5447 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
5448 | /* Fore channel attributes */ | |
fc931582 AA |
5449 | args->fc_attrs.max_rqst_sz = mxrqst_sz; |
5450 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 | 5451 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 5452 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
5453 | |
5454 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 5455 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
5456 | __func__, |
5457 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 5458 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
5459 | |
5460 | /* Back channel attributes */ | |
fc931582 AA |
5461 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
5462 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
5463 | args->bc_attrs.max_resp_sz_cached = 0; | |
5464 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
5465 | args->bc_attrs.max_reqs = 1; | |
5466 | ||
5467 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
5468 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
5469 | __func__, | |
5470 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
5471 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
5472 | args->bc_attrs.max_reqs); | |
5473 | } | |
5474 | ||
43c2e885 | 5475 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 5476 | { |
43c2e885 BF |
5477 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
5478 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
5479 | ||
43c2e885 BF |
5480 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
5481 | return -EINVAL; | |
5482 | /* | |
5483 | * Our requested max_ops is the minimum we need; we're not | |
5484 | * prepared to break up compounds into smaller pieces than that. | |
5485 | * So, no point even trying to continue if the server won't | |
5486 | * cooperate: | |
5487 | */ | |
5488 | if (rcvd->max_ops < sent->max_ops) | |
5489 | return -EINVAL; | |
5490 | if (rcvd->max_reqs == 0) | |
5491 | return -EINVAL; | |
b4b9a0c1 VG |
5492 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
5493 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 5494 | return 0; |
8d35301d AA |
5495 | } |
5496 | ||
43c2e885 BF |
5497 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
5498 | { | |
5499 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
5500 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 5501 | |
43c2e885 BF |
5502 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
5503 | return -EINVAL; | |
5504 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
5505 | return -EINVAL; | |
5506 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
5507 | return -EINVAL; | |
5508 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 5509 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 5510 | return -EINVAL; |
b4b9a0c1 | 5511 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 BF |
5512 | return -EINVAL; |
5513 | return 0; | |
5514 | } | |
8d35301d | 5515 | |
8d35301d AA |
5516 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
5517 | struct nfs4_session *session) | |
5518 | { | |
43c2e885 | 5519 | int ret; |
8d35301d | 5520 | |
43c2e885 BF |
5521 | ret = nfs4_verify_fore_channel_attrs(args, session); |
5522 | if (ret) | |
5523 | return ret; | |
5524 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
5525 | } |
5526 | ||
fc931582 AA |
5527 | static int _nfs4_proc_create_session(struct nfs_client *clp) |
5528 | { | |
5529 | struct nfs4_session *session = clp->cl_session; | |
5530 | struct nfs41_create_session_args args = { | |
5531 | .client = clp, | |
5532 | .cb_program = NFS4_CALLBACK, | |
5533 | }; | |
5534 | struct nfs41_create_session_res res = { | |
5535 | .client = clp, | |
5536 | }; | |
5537 | struct rpc_message msg = { | |
5538 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
5539 | .rpc_argp = &args, | |
5540 | .rpc_resp = &res, | |
5541 | }; | |
5542 | int status; | |
5543 | ||
5544 | nfs4_init_channel_attrs(&args); | |
0f91421e | 5545 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 5546 | |
1bd714f2 | 5547 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
fc931582 | 5548 | |
8d35301d AA |
5549 | if (!status) |
5550 | /* Verify the session's negotiated channel_attrs values */ | |
5551 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
5552 | if (!status) { |
5553 | /* Increment the clientid slot sequence id */ | |
5554 | clp->cl_seqid++; | |
5555 | } | |
5556 | ||
5557 | return status; | |
5558 | } | |
5559 | ||
5560 | /* | |
5561 | * Issues a CREATE_SESSION operation to the server. | |
5562 | * It is the responsibility of the caller to verify the session is | |
5563 | * expired before calling this routine. | |
5564 | */ | |
f26468fb | 5565 | int nfs4_proc_create_session(struct nfs_client *clp) |
fc931582 AA |
5566 | { |
5567 | int status; | |
5568 | unsigned *ptr; | |
fc931582 AA |
5569 | struct nfs4_session *session = clp->cl_session; |
5570 | ||
5571 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
5572 | ||
fd954ae1 | 5573 | status = _nfs4_proc_create_session(clp); |
fc931582 AA |
5574 | if (status) |
5575 | goto out; | |
5576 | ||
aacd5537 AA |
5577 | /* Init or reset the session slot tables */ |
5578 | status = nfs4_setup_session_slot_tables(session); | |
5579 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
5580 | if (status) |
5581 | goto out; | |
5582 | ||
5583 | ptr = (unsigned *)&session->sess_id.data[0]; | |
5584 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
5585 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
5586 | out: |
5587 | dprintk("<-- %s\n", __func__); | |
5588 | return status; | |
5589 | } | |
5590 | ||
0f3e66c6 AA |
5591 | /* |
5592 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
5593 | * The caller must serialize access to this routine. | |
5594 | */ | |
5595 | int nfs4_proc_destroy_session(struct nfs4_session *session) | |
5596 | { | |
5597 | int status = 0; | |
5598 | struct rpc_message msg; | |
5599 | ||
5600 | dprintk("--> nfs4_proc_destroy_session\n"); | |
5601 | ||
5602 | /* session is still being setup */ | |
5603 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
5604 | return status; | |
5605 | ||
5606 | msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION]; | |
5607 | msg.rpc_argp = session; | |
5608 | msg.rpc_resp = NULL; | |
5609 | msg.rpc_cred = NULL; | |
1bd714f2 | 5610 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
0f3e66c6 AA |
5611 | |
5612 | if (status) | |
5613 | printk(KERN_WARNING | |
f9fd2d9c | 5614 | "NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
5615 | "Session has been destroyed regardless...\n", status); |
5616 | ||
5617 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
5618 | return status; | |
5619 | } | |
5620 | ||
fccba804 TM |
5621 | int nfs4_init_session(struct nfs_server *server) |
5622 | { | |
5623 | struct nfs_client *clp = server->nfs_client; | |
2449ea2e | 5624 | struct nfs4_session *session; |
68bf05ef | 5625 | unsigned int rsize, wsize; |
fccba804 TM |
5626 | int ret; |
5627 | ||
5628 | if (!nfs4_has_session(clp)) | |
5629 | return 0; | |
5630 | ||
1055d76d TM |
5631 | session = clp->cl_session; |
5632 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5633 | return 0; | |
5634 | ||
68bf05ef AA |
5635 | rsize = server->rsize; |
5636 | if (rsize == 0) | |
5637 | rsize = NFS_MAX_FILE_IO_SIZE; | |
5638 | wsize = server->wsize; | |
5639 | if (wsize == 0) | |
5640 | wsize = NFS_MAX_FILE_IO_SIZE; | |
5641 | ||
68bf05ef AA |
5642 | session->fc_attrs.max_rqst_sz = wsize + nfs41_maxwrite_overhead; |
5643 | session->fc_attrs.max_resp_sz = rsize + nfs41_maxread_overhead; | |
2449ea2e | 5644 | |
fccba804 TM |
5645 | ret = nfs4_recover_expired_lease(server); |
5646 | if (!ret) | |
5647 | ret = nfs4_check_client_ready(clp); | |
5648 | return ret; | |
5649 | } | |
5650 | ||
d83217c1 AA |
5651 | int nfs4_init_ds_session(struct nfs_client *clp) |
5652 | { | |
5653 | struct nfs4_session *session = clp->cl_session; | |
5654 | int ret; | |
5655 | ||
5656 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5657 | return 0; | |
5658 | ||
5659 | ret = nfs4_client_recover_expired_lease(clp); | |
5660 | if (!ret) | |
5661 | /* Test for the DS role */ | |
5662 | if (!is_ds_client(clp)) | |
5663 | ret = -ENODEV; | |
5664 | if (!ret) | |
5665 | ret = nfs4_check_client_ready(clp); | |
5666 | return ret; | |
5667 | ||
5668 | } | |
5669 | EXPORT_SYMBOL_GPL(nfs4_init_ds_session); | |
5670 | ||
5671 | ||
fc01cea9 AA |
5672 | /* |
5673 | * Renew the cl_session lease. | |
5674 | */ | |
d5f8d3fe TM |
5675 | struct nfs4_sequence_data { |
5676 | struct nfs_client *clp; | |
5677 | struct nfs4_sequence_args args; | |
5678 | struct nfs4_sequence_res res; | |
5679 | }; | |
5680 | ||
dc96aef9 AB |
5681 | static void nfs41_sequence_release(void *data) |
5682 | { | |
d5f8d3fe TM |
5683 | struct nfs4_sequence_data *calldata = data; |
5684 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 5685 | |
7135840f AB |
5686 | if (atomic_read(&clp->cl_count) > 1) |
5687 | nfs4_schedule_state_renewal(clp); | |
5688 | nfs_put_client(clp); | |
d5f8d3fe | 5689 | kfree(calldata); |
dc96aef9 AB |
5690 | } |
5691 | ||
aa5190d0 TM |
5692 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5693 | { | |
5694 | switch(task->tk_status) { | |
5695 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5696 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5697 | return -EAGAIN; | |
5698 | default: | |
0400a6b0 | 5699 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5700 | } |
5701 | return 0; | |
5702 | } | |
5703 | ||
dc96aef9 | 5704 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 5705 | { |
d5f8d3fe TM |
5706 | struct nfs4_sequence_data *calldata = data; |
5707 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 5708 | |
14516c3a TM |
5709 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
5710 | return; | |
fc01cea9 AA |
5711 | |
5712 | if (task->tk_status < 0) { | |
5713 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
5714 | if (atomic_read(&clp->cl_count) == 1) |
5715 | goto out; | |
fc01cea9 | 5716 | |
aa5190d0 TM |
5717 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
5718 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
5719 | return; |
5720 | } | |
5721 | } | |
fc01cea9 | 5722 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 5723 | out: |
fc01cea9 AA |
5724 | dprintk("<-- %s\n", __func__); |
5725 | } | |
5726 | ||
5727 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
5728 | { | |
d5f8d3fe TM |
5729 | struct nfs4_sequence_data *calldata = data; |
5730 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
5731 | struct nfs4_sequence_args *args; |
5732 | struct nfs4_sequence_res *res; | |
5733 | ||
fc01cea9 AA |
5734 | args = task->tk_msg.rpc_argp; |
5735 | res = task->tk_msg.rpc_resp; | |
5736 | ||
9d12b216 | 5737 | if (nfs41_setup_sequence(clp->cl_session, args, res, task)) |
fc01cea9 AA |
5738 | return; |
5739 | rpc_call_start(task); | |
5740 | } | |
5741 | ||
5742 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
5743 | .rpc_call_done = nfs41_sequence_call_done, | |
5744 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 5745 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
5746 | }; |
5747 | ||
71ac6da9 | 5748 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) |
fc01cea9 | 5749 | { |
d5f8d3fe | 5750 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
5751 | struct rpc_message msg = { |
5752 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
5753 | .rpc_cred = cred, | |
5754 | }; | |
71ac6da9 TM |
5755 | struct rpc_task_setup task_setup_data = { |
5756 | .rpc_client = clp->cl_rpcclient, | |
5757 | .rpc_message = &msg, | |
5758 | .callback_ops = &nfs41_sequence_ops, | |
5759 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT, | |
5760 | }; | |
fc01cea9 | 5761 | |
7135840f | 5762 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 5763 | return ERR_PTR(-EIO); |
dfb4f309 | 5764 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 5765 | if (calldata == NULL) { |
7135840f | 5766 | nfs_put_client(clp); |
71ac6da9 | 5767 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 5768 | } |
9d12b216 | 5769 | nfs41_init_sequence(&calldata->args, &calldata->res, 0); |
d5f8d3fe TM |
5770 | msg.rpc_argp = &calldata->args; |
5771 | msg.rpc_resp = &calldata->res; | |
5772 | calldata->clp = clp; | |
71ac6da9 | 5773 | task_setup_data.callback_data = calldata; |
fc01cea9 | 5774 | |
71ac6da9 TM |
5775 | return rpc_run_task(&task_setup_data); |
5776 | } | |
5777 | ||
2f60ea6b | 5778 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
5779 | { |
5780 | struct rpc_task *task; | |
5781 | int ret = 0; | |
5782 | ||
2f60ea6b TM |
5783 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
5784 | return 0; | |
71ac6da9 TM |
5785 | task = _nfs41_proc_sequence(clp, cred); |
5786 | if (IS_ERR(task)) | |
5787 | ret = PTR_ERR(task); | |
5788 | else | |
bf294b41 | 5789 | rpc_put_task_async(task); |
71ac6da9 TM |
5790 | dprintk("<-- %s status=%d\n", __func__, ret); |
5791 | return ret; | |
5792 | } | |
5793 | ||
5794 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5795 | { | |
5796 | struct rpc_task *task; | |
5797 | int ret; | |
5798 | ||
5799 | task = _nfs41_proc_sequence(clp, cred); | |
5800 | if (IS_ERR(task)) { | |
5801 | ret = PTR_ERR(task); | |
5802 | goto out; | |
5803 | } | |
5804 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
5805 | if (!ret) { |
5806 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
5807 | ||
5808 | if (task->tk_status == 0) | |
5809 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 5810 | ret = task->tk_status; |
b4410c2f | 5811 | } |
71ac6da9 TM |
5812 | rpc_put_task(task); |
5813 | out: | |
5814 | dprintk("<-- %s status=%d\n", __func__, ret); | |
5815 | return ret; | |
fc01cea9 AA |
5816 | } |
5817 | ||
fce5c838 RL |
5818 | struct nfs4_reclaim_complete_data { |
5819 | struct nfs_client *clp; | |
5820 | struct nfs41_reclaim_complete_args arg; | |
5821 | struct nfs41_reclaim_complete_res res; | |
5822 | }; | |
5823 | ||
5824 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
5825 | { | |
5826 | struct nfs4_reclaim_complete_data *calldata = data; | |
5827 | ||
b257957e | 5828 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
035168ab TM |
5829 | if (nfs41_setup_sequence(calldata->clp->cl_session, |
5830 | &calldata->arg.seq_args, | |
9d12b216 | 5831 | &calldata->res.seq_res, task)) |
fce5c838 RL |
5832 | return; |
5833 | ||
5834 | rpc_call_start(task); | |
5835 | } | |
5836 | ||
aa5190d0 TM |
5837 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5838 | { | |
5839 | switch(task->tk_status) { | |
5840 | case 0: | |
5841 | case -NFS4ERR_COMPLETE_ALREADY: | |
5842 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
5843 | break; | |
5844 | case -NFS4ERR_DELAY: | |
aa5190d0 | 5845 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
5846 | /* fall through */ |
5847 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
5848 | return -EAGAIN; |
5849 | default: | |
0400a6b0 | 5850 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5851 | } |
5852 | return 0; | |
5853 | } | |
5854 | ||
fce5c838 RL |
5855 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
5856 | { | |
5857 | struct nfs4_reclaim_complete_data *calldata = data; | |
5858 | struct nfs_client *clp = calldata->clp; | |
5859 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
5860 | ||
5861 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5862 | if (!nfs41_sequence_done(task, res)) |
5863 | return; | |
fce5c838 | 5864 | |
aa5190d0 TM |
5865 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
5866 | rpc_restart_call_prepare(task); | |
5867 | return; | |
5868 | } | |
fce5c838 RL |
5869 | dprintk("<-- %s\n", __func__); |
5870 | } | |
5871 | ||
5872 | static void nfs4_free_reclaim_complete_data(void *data) | |
5873 | { | |
5874 | struct nfs4_reclaim_complete_data *calldata = data; | |
5875 | ||
5876 | kfree(calldata); | |
5877 | } | |
5878 | ||
5879 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
5880 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
5881 | .rpc_call_done = nfs4_reclaim_complete_done, | |
5882 | .rpc_release = nfs4_free_reclaim_complete_data, | |
5883 | }; | |
5884 | ||
5885 | /* | |
5886 | * Issue a global reclaim complete. | |
5887 | */ | |
5888 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
5889 | { | |
5890 | struct nfs4_reclaim_complete_data *calldata; | |
5891 | struct rpc_task *task; | |
5892 | struct rpc_message msg = { | |
5893 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
5894 | }; | |
5895 | struct rpc_task_setup task_setup_data = { | |
5896 | .rpc_client = clp->cl_rpcclient, | |
5897 | .rpc_message = &msg, | |
5898 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
5899 | .flags = RPC_TASK_ASYNC, | |
5900 | }; | |
5901 | int status = -ENOMEM; | |
5902 | ||
5903 | dprintk("--> %s\n", __func__); | |
8535b2be | 5904 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
5905 | if (calldata == NULL) |
5906 | goto out; | |
5907 | calldata->clp = clp; | |
5908 | calldata->arg.one_fs = 0; | |
fce5c838 | 5909 | |
9d12b216 | 5910 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
fce5c838 RL |
5911 | msg.rpc_argp = &calldata->arg; |
5912 | msg.rpc_resp = &calldata->res; | |
5913 | task_setup_data.callback_data = calldata; | |
5914 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 5915 | if (IS_ERR(task)) { |
fce5c838 | 5916 | status = PTR_ERR(task); |
acf82b85 DC |
5917 | goto out; |
5918 | } | |
c34c32ea AA |
5919 | status = nfs4_wait_for_completion_rpc_task(task); |
5920 | if (status == 0) | |
5921 | status = task->tk_status; | |
fce5c838 | 5922 | rpc_put_task(task); |
acf82b85 | 5923 | return 0; |
fce5c838 RL |
5924 | out: |
5925 | dprintk("<-- %s status=%d\n", __func__, status); | |
5926 | return status; | |
5927 | } | |
b1f69b75 AA |
5928 | |
5929 | static void | |
5930 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
5931 | { | |
5932 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 5933 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
b1f69b75 AA |
5934 | |
5935 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
5936 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
5937 | * right now covering the LAYOUTGET we are about to send. | |
5938 | * However, that is not so catastrophic, and there seems | |
5939 | * to be no way to prevent it completely. | |
5940 | */ | |
b1f69b75 | 5941 | if (nfs4_setup_sequence(server, &lgp->args.seq_args, |
9d12b216 | 5942 | &lgp->res.seq_res, task)) |
b1f69b75 | 5943 | return; |
cf7d63f1 FI |
5944 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
5945 | NFS_I(lgp->args.inode)->layout, | |
5946 | lgp->args.ctx->state)) { | |
5947 | rpc_exit(task, NFS4_OK); | |
5948 | return; | |
5949 | } | |
b1f69b75 AA |
5950 | rpc_call_start(task); |
5951 | } | |
5952 | ||
5953 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
5954 | { | |
5955 | struct nfs4_layoutget *lgp = calldata; | |
5956 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5957 | ||
5958 | dprintk("--> %s\n", __func__); | |
5959 | ||
5960 | if (!nfs4_sequence_done(task, &lgp->res.seq_res)) | |
5961 | return; | |
5962 | ||
5963 | switch (task->tk_status) { | |
5964 | case 0: | |
5965 | break; | |
5966 | case -NFS4ERR_LAYOUTTRYLATER: | |
5967 | case -NFS4ERR_RECALLCONFLICT: | |
5968 | task->tk_status = -NFS4ERR_DELAY; | |
5969 | /* Fall through */ | |
5970 | default: | |
5971 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
5972 | rpc_restart_call_prepare(task); | |
5973 | return; | |
5974 | } | |
5975 | } | |
b1f69b75 AA |
5976 | dprintk("<-- %s\n", __func__); |
5977 | } | |
5978 | ||
5979 | static void nfs4_layoutget_release(void *calldata) | |
5980 | { | |
5981 | struct nfs4_layoutget *lgp = calldata; | |
5982 | ||
5983 | dprintk("--> %s\n", __func__); | |
b1f69b75 AA |
5984 | put_nfs_open_context(lgp->args.ctx); |
5985 | kfree(calldata); | |
5986 | dprintk("<-- %s\n", __func__); | |
5987 | } | |
5988 | ||
5989 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
5990 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
5991 | .rpc_call_done = nfs4_layoutget_done, | |
5992 | .rpc_release = nfs4_layoutget_release, | |
5993 | }; | |
5994 | ||
5995 | int nfs4_proc_layoutget(struct nfs4_layoutget *lgp) | |
5996 | { | |
5997 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5998 | struct rpc_task *task; | |
5999 | struct rpc_message msg = { | |
6000 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
6001 | .rpc_argp = &lgp->args, | |
6002 | .rpc_resp = &lgp->res, | |
6003 | }; | |
6004 | struct rpc_task_setup task_setup_data = { | |
6005 | .rpc_client = server->client, | |
6006 | .rpc_message = &msg, | |
6007 | .callback_ops = &nfs4_layoutget_call_ops, | |
6008 | .callback_data = lgp, | |
6009 | .flags = RPC_TASK_ASYNC, | |
6010 | }; | |
6011 | int status = 0; | |
6012 | ||
6013 | dprintk("--> %s\n", __func__); | |
6014 | ||
35124a09 | 6015 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 6016 | lgp->res.seq_res.sr_slot = NULL; |
9d12b216 | 6017 | nfs41_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
b1f69b75 AA |
6018 | task = rpc_run_task(&task_setup_data); |
6019 | if (IS_ERR(task)) | |
6020 | return PTR_ERR(task); | |
6021 | status = nfs4_wait_for_completion_rpc_task(task); | |
c31663d4 FI |
6022 | if (status == 0) |
6023 | status = task->tk_status; | |
6024 | if (status == 0) | |
6025 | status = pnfs_layout_process(lgp); | |
b1f69b75 AA |
6026 | rpc_put_task(task); |
6027 | dprintk("<-- %s status=%d\n", __func__, status); | |
6028 | return status; | |
6029 | } | |
6030 | ||
cbe82603 BH |
6031 | static void |
6032 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
6033 | { | |
6034 | struct nfs4_layoutreturn *lrp = calldata; | |
6035 | ||
6036 | dprintk("--> %s\n", __func__); | |
6037 | if (nfs41_setup_sequence(lrp->clp->cl_session, &lrp->args.seq_args, | |
9d12b216 | 6038 | &lrp->res.seq_res, task)) |
cbe82603 BH |
6039 | return; |
6040 | rpc_call_start(task); | |
6041 | } | |
6042 | ||
6043 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
6044 | { | |
6045 | struct nfs4_layoutreturn *lrp = calldata; | |
6046 | struct nfs_server *server; | |
a56aaa02 | 6047 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
6048 | |
6049 | dprintk("--> %s\n", __func__); | |
6050 | ||
6051 | if (!nfs4_sequence_done(task, &lrp->res.seq_res)) | |
6052 | return; | |
6053 | ||
6054 | server = NFS_SERVER(lrp->args.inode); | |
6055 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 6056 | rpc_restart_call_prepare(task); |
cbe82603 BH |
6057 | return; |
6058 | } | |
a2e1d4f2 | 6059 | spin_lock(&lo->plh_inode->i_lock); |
cbe82603 | 6060 | if (task->tk_status == 0) { |
cbe82603 | 6061 | if (lrp->res.lrs_present) { |
cbe82603 | 6062 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); |
cbe82603 BH |
6063 | } else |
6064 | BUG_ON(!list_empty(&lo->plh_segs)); | |
6065 | } | |
a2e1d4f2 FI |
6066 | lo->plh_block_lgets--; |
6067 | spin_unlock(&lo->plh_inode->i_lock); | |
cbe82603 BH |
6068 | dprintk("<-- %s\n", __func__); |
6069 | } | |
6070 | ||
6071 | static void nfs4_layoutreturn_release(void *calldata) | |
6072 | { | |
6073 | struct nfs4_layoutreturn *lrp = calldata; | |
6074 | ||
6075 | dprintk("--> %s\n", __func__); | |
a56aaa02 | 6076 | put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
6077 | kfree(calldata); |
6078 | dprintk("<-- %s\n", __func__); | |
6079 | } | |
6080 | ||
6081 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
6082 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
6083 | .rpc_call_done = nfs4_layoutreturn_done, | |
6084 | .rpc_release = nfs4_layoutreturn_release, | |
6085 | }; | |
6086 | ||
6087 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
6088 | { | |
6089 | struct rpc_task *task; | |
6090 | struct rpc_message msg = { | |
6091 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
6092 | .rpc_argp = &lrp->args, | |
6093 | .rpc_resp = &lrp->res, | |
6094 | }; | |
6095 | struct rpc_task_setup task_setup_data = { | |
6096 | .rpc_client = lrp->clp->cl_rpcclient, | |
6097 | .rpc_message = &msg, | |
6098 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
6099 | .callback_data = lrp, | |
6100 | }; | |
6101 | int status; | |
6102 | ||
6103 | dprintk("--> %s\n", __func__); | |
9d12b216 | 6104 | nfs41_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
6105 | task = rpc_run_task(&task_setup_data); |
6106 | if (IS_ERR(task)) | |
6107 | return PTR_ERR(task); | |
6108 | status = task->tk_status; | |
6109 | dprintk("<-- %s status=%d\n", __func__, status); | |
6110 | rpc_put_task(task); | |
6111 | return status; | |
6112 | } | |
6113 | ||
7f11d8d3 AA |
6114 | /* |
6115 | * Retrieve the list of Data Server devices from the MDS. | |
6116 | */ | |
6117 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
6118 | const struct nfs_fh *fh, | |
6119 | struct pnfs_devicelist *devlist) | |
6120 | { | |
6121 | struct nfs4_getdevicelist_args args = { | |
6122 | .fh = fh, | |
6123 | .layoutclass = server->pnfs_curr_ld->id, | |
6124 | }; | |
6125 | struct nfs4_getdevicelist_res res = { | |
6126 | .devlist = devlist, | |
6127 | }; | |
6128 | struct rpc_message msg = { | |
6129 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
6130 | .rpc_argp = &args, | |
6131 | .rpc_resp = &res, | |
6132 | }; | |
6133 | int status; | |
6134 | ||
6135 | dprintk("--> %s\n", __func__); | |
6136 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
6137 | &res.seq_res, 0); | |
6138 | dprintk("<-- %s status=%d\n", __func__, status); | |
6139 | return status; | |
6140 | } | |
6141 | ||
6142 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
6143 | const struct nfs_fh *fh, | |
6144 | struct pnfs_devicelist *devlist) | |
6145 | { | |
6146 | struct nfs4_exception exception = { }; | |
6147 | int err; | |
6148 | ||
6149 | do { | |
6150 | err = nfs4_handle_exception(server, | |
6151 | _nfs4_getdevicelist(server, fh, devlist), | |
6152 | &exception); | |
6153 | } while (exception.retry); | |
6154 | ||
6155 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
6156 | err, devlist->num_devs); | |
6157 | ||
6158 | return err; | |
6159 | } | |
6160 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
6161 | ||
b1f69b75 AA |
6162 | static int |
6163 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6164 | { | |
6165 | struct nfs4_getdeviceinfo_args args = { | |
6166 | .pdev = pdev, | |
6167 | }; | |
6168 | struct nfs4_getdeviceinfo_res res = { | |
6169 | .pdev = pdev, | |
6170 | }; | |
6171 | struct rpc_message msg = { | |
6172 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
6173 | .rpc_argp = &args, | |
6174 | .rpc_resp = &res, | |
6175 | }; | |
6176 | int status; | |
6177 | ||
6178 | dprintk("--> %s\n", __func__); | |
7c513058 | 6179 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
6180 | dprintk("<-- %s status=%d\n", __func__, status); |
6181 | ||
6182 | return status; | |
6183 | } | |
6184 | ||
6185 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6186 | { | |
6187 | struct nfs4_exception exception = { }; | |
6188 | int err; | |
6189 | ||
6190 | do { | |
6191 | err = nfs4_handle_exception(server, | |
6192 | _nfs4_proc_getdeviceinfo(server, pdev), | |
6193 | &exception); | |
6194 | } while (exception.retry); | |
6195 | return err; | |
6196 | } | |
6197 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
6198 | ||
863a3c6c AA |
6199 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
6200 | { | |
6201 | struct nfs4_layoutcommit_data *data = calldata; | |
6202 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6203 | ||
6204 | if (nfs4_setup_sequence(server, &data->args.seq_args, | |
9d12b216 | 6205 | &data->res.seq_res, task)) |
863a3c6c AA |
6206 | return; |
6207 | rpc_call_start(task); | |
6208 | } | |
6209 | ||
6210 | static void | |
6211 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
6212 | { | |
6213 | struct nfs4_layoutcommit_data *data = calldata; | |
6214 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6215 | ||
6216 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
6217 | return; | |
6218 | ||
6219 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
6220 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
6221 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
6222 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
6223 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 6224 | task->tk_status = 0; |
e59d27e0 TM |
6225 | break; |
6226 | case 0: | |
863a3c6c AA |
6227 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
6228 | data->res.fattr); | |
e59d27e0 TM |
6229 | break; |
6230 | default: | |
6231 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
6232 | rpc_restart_call_prepare(task); | |
6233 | return; | |
6234 | } | |
6235 | } | |
863a3c6c AA |
6236 | } |
6237 | ||
6238 | static void nfs4_layoutcommit_release(void *calldata) | |
6239 | { | |
6240 | struct nfs4_layoutcommit_data *data = calldata; | |
a9bae566 | 6241 | struct pnfs_layout_segment *lseg, *tmp; |
92407e75 | 6242 | unsigned long *bitlock = &NFS_I(data->args.inode)->flags; |
863a3c6c | 6243 | |
db29c089 | 6244 | pnfs_cleanup_layoutcommit(data); |
863a3c6c | 6245 | /* Matched by references in pnfs_set_layoutcommit */ |
a9bae566 PT |
6246 | list_for_each_entry_safe(lseg, tmp, &data->lseg_list, pls_lc_list) { |
6247 | list_del_init(&lseg->pls_lc_list); | |
6248 | if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT, | |
6249 | &lseg->pls_flags)) | |
6250 | put_lseg(lseg); | |
6251 | } | |
92407e75 PT |
6252 | |
6253 | clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING, bitlock); | |
6254 | smp_mb__after_clear_bit(); | |
6255 | wake_up_bit(bitlock, NFS_INO_LAYOUTCOMMITTING); | |
6256 | ||
863a3c6c AA |
6257 | put_rpccred(data->cred); |
6258 | kfree(data); | |
6259 | } | |
6260 | ||
6261 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
6262 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
6263 | .rpc_call_done = nfs4_layoutcommit_done, | |
6264 | .rpc_release = nfs4_layoutcommit_release, | |
6265 | }; | |
6266 | ||
6267 | int | |
ef311537 | 6268 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
6269 | { |
6270 | struct rpc_message msg = { | |
6271 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
6272 | .rpc_argp = &data->args, | |
6273 | .rpc_resp = &data->res, | |
6274 | .rpc_cred = data->cred, | |
6275 | }; | |
6276 | struct rpc_task_setup task_setup_data = { | |
6277 | .task = &data->task, | |
6278 | .rpc_client = NFS_CLIENT(data->args.inode), | |
6279 | .rpc_message = &msg, | |
6280 | .callback_ops = &nfs4_layoutcommit_ops, | |
6281 | .callback_data = data, | |
6282 | .flags = RPC_TASK_ASYNC, | |
6283 | }; | |
6284 | struct rpc_task *task; | |
6285 | int status = 0; | |
6286 | ||
6287 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
6288 | "lbw: %llu inode %lu\n", | |
6289 | data->task.tk_pid, sync, | |
6290 | data->args.lastbytewritten, | |
6291 | data->args.inode->i_ino); | |
6292 | ||
9d12b216 | 6293 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
6294 | task = rpc_run_task(&task_setup_data); |
6295 | if (IS_ERR(task)) | |
6296 | return PTR_ERR(task); | |
ef311537 | 6297 | if (sync == false) |
863a3c6c AA |
6298 | goto out; |
6299 | status = nfs4_wait_for_completion_rpc_task(task); | |
6300 | if (status != 0) | |
6301 | goto out; | |
6302 | status = task->tk_status; | |
6303 | out: | |
6304 | dprintk("%s: status %d\n", __func__, status); | |
6305 | rpc_put_task(task); | |
6306 | return status; | |
6307 | } | |
fca78d6d BS |
6308 | |
6309 | static int | |
6310 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6311 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6312 | { | |
6313 | struct nfs41_secinfo_no_name_args args = { | |
6314 | .style = SECINFO_STYLE_CURRENT_FH, | |
6315 | }; | |
6316 | struct nfs4_secinfo_res res = { | |
6317 | .flavors = flavors, | |
6318 | }; | |
6319 | struct rpc_message msg = { | |
6320 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
6321 | .rpc_argp = &args, | |
6322 | .rpc_resp = &res, | |
6323 | }; | |
6324 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); | |
6325 | } | |
6326 | ||
6327 | static int | |
6328 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6329 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6330 | { | |
6331 | struct nfs4_exception exception = { }; | |
6332 | int err; | |
6333 | do { | |
6334 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6335 | switch (err) { | |
6336 | case 0: | |
6337 | case -NFS4ERR_WRONGSEC: | |
6338 | case -NFS4ERR_NOTSUPP: | |
05e9cfb4 | 6339 | goto out; |
fca78d6d BS |
6340 | default: |
6341 | err = nfs4_handle_exception(server, err, &exception); | |
6342 | } | |
6343 | } while (exception.retry); | |
05e9cfb4 | 6344 | out: |
fca78d6d BS |
6345 | return err; |
6346 | } | |
6347 | ||
6348 | static int | |
6349 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
6350 | struct nfs_fsinfo *info) | |
6351 | { | |
6352 | int err; | |
6353 | struct page *page; | |
6354 | rpc_authflavor_t flavor; | |
6355 | struct nfs4_secinfo_flavors *flavors; | |
6356 | ||
6357 | page = alloc_page(GFP_KERNEL); | |
6358 | if (!page) { | |
6359 | err = -ENOMEM; | |
6360 | goto out; | |
6361 | } | |
6362 | ||
6363 | flavors = page_address(page); | |
6364 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6365 | ||
6366 | /* | |
6367 | * Fall back on "guess and check" method if | |
6368 | * the server doesn't support SECINFO_NO_NAME | |
6369 | */ | |
6370 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
6371 | err = nfs4_find_root_sec(server, fhandle, info); | |
6372 | goto out_freepage; | |
6373 | } | |
6374 | if (err) | |
6375 | goto out_freepage; | |
6376 | ||
6377 | flavor = nfs_find_best_sec(flavors); | |
6378 | if (err == 0) | |
6379 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
6380 | ||
6381 | out_freepage: | |
6382 | put_page(page); | |
6383 | if (err == -EACCES) | |
6384 | return -EPERM; | |
6385 | out: | |
6386 | return err; | |
6387 | } | |
1cab0652 BS |
6388 | |
6389 | static int _nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) | |
7d974794 BS |
6390 | { |
6391 | int status; | |
6392 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 6393 | .stateid = stateid, |
7d974794 BS |
6394 | }; |
6395 | struct nfs41_test_stateid_res res; | |
6396 | struct rpc_message msg = { | |
6397 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
6398 | .rpc_argp = &args, | |
6399 | .rpc_resp = &res, | |
6400 | }; | |
1cab0652 | 6401 | |
9d12b216 | 6402 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
1cab0652 BS |
6403 | status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
6404 | ||
6405 | if (status == NFS_OK) | |
6406 | return res.status; | |
7d974794 BS |
6407 | return status; |
6408 | } | |
6409 | ||
1cab0652 | 6410 | static int nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
7d974794 BS |
6411 | { |
6412 | struct nfs4_exception exception = { }; | |
6413 | int err; | |
6414 | do { | |
6415 | err = nfs4_handle_exception(server, | |
1cab0652 | 6416 | _nfs41_test_stateid(server, stateid), |
7d974794 BS |
6417 | &exception); |
6418 | } while (exception.retry); | |
6419 | return err; | |
6420 | } | |
9aeda35f | 6421 | |
1cab0652 | 6422 | static int _nfs4_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f | 6423 | { |
9aeda35f | 6424 | struct nfs41_free_stateid_args args = { |
1cab0652 | 6425 | .stateid = stateid, |
9aeda35f BS |
6426 | }; |
6427 | struct nfs41_free_stateid_res res; | |
6428 | struct rpc_message msg = { | |
6429 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
6430 | .rpc_argp = &args, | |
6431 | .rpc_resp = &res, | |
6432 | }; | |
6433 | ||
9d12b216 TM |
6434 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
6435 | return nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); | |
9aeda35f BS |
6436 | } |
6437 | ||
1cab0652 | 6438 | static int nfs41_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f BS |
6439 | { |
6440 | struct nfs4_exception exception = { }; | |
6441 | int err; | |
6442 | do { | |
6443 | err = nfs4_handle_exception(server, | |
1cab0652 | 6444 | _nfs4_free_stateid(server, stateid), |
9aeda35f BS |
6445 | &exception); |
6446 | } while (exception.retry); | |
6447 | return err; | |
6448 | } | |
36281caa TM |
6449 | |
6450 | static bool nfs41_match_stateid(const nfs4_stateid *s1, | |
6451 | const nfs4_stateid *s2) | |
6452 | { | |
2d2f24ad | 6453 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
6454 | return false; |
6455 | ||
2d2f24ad | 6456 | if (s1->seqid == s2->seqid) |
36281caa | 6457 | return true; |
2d2f24ad | 6458 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
6459 | return true; |
6460 | ||
6461 | return false; | |
6462 | } | |
6463 | ||
557134a3 AA |
6464 | #endif /* CONFIG_NFS_V4_1 */ |
6465 | ||
36281caa TM |
6466 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
6467 | const nfs4_stateid *s2) | |
6468 | { | |
f597c537 | 6469 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
6470 | } |
6471 | ||
6472 | ||
17280175 | 6473 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 6474 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 6475 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
6476 | .recover_open = nfs4_open_reclaim, |
6477 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 6478 | .establish_clid = nfs4_init_clientid, |
90a16617 | 6479 | .get_clid_cred = nfs4_get_setclientid_cred, |
1da177e4 LT |
6480 | }; |
6481 | ||
591d71cb | 6482 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 6483 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
6484 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
6485 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
6486 | .recover_open = nfs4_open_reclaim, | |
6487 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 6488 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6489 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 6490 | .reclaim_complete = nfs41_proc_reclaim_complete, |
591d71cb AA |
6491 | }; |
6492 | #endif /* CONFIG_NFS_V4_1 */ | |
6493 | ||
17280175 | 6494 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
6495 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
6496 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
6497 | .recover_open = nfs4_open_expired, | |
6498 | .recover_lock = nfs4_lock_expired, | |
6499 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 6500 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
6501 | }; |
6502 | ||
6503 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 6504 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 6505 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 6506 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
6507 | .recover_open = nfs41_open_expired, |
6508 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 6509 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6510 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 6511 | }; |
591d71cb | 6512 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 6513 | |
17280175 | 6514 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 6515 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 6516 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 6517 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
6518 | }; |
6519 | ||
6520 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 6521 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 6522 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 6523 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 6524 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
6525 | }; |
6526 | #endif | |
6527 | ||
97dc1359 TM |
6528 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
6529 | .minor_version = 0, | |
6530 | .call_sync = _nfs4_call_sync, | |
36281caa | 6531 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 6532 | .find_root_sec = nfs4_find_root_sec, |
c48f4f35 TM |
6533 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
6534 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
6535 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
6536 | }; |
6537 | ||
6538 | #if defined(CONFIG_NFS_V4_1) | |
6539 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
6540 | .minor_version = 1, | |
6541 | .call_sync = _nfs4_call_sync_session, | |
36281caa | 6542 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 6543 | .find_root_sec = nfs41_find_root_sec, |
c48f4f35 TM |
6544 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
6545 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
6546 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
6547 | }; |
6548 | #endif | |
6549 | ||
97dc1359 TM |
6550 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
6551 | [0] = &nfs_v4_0_minor_ops, | |
6552 | #if defined(CONFIG_NFS_V4_1) | |
6553 | [1] = &nfs_v4_1_minor_ops, | |
6554 | #endif | |
6555 | }; | |
6556 | ||
92e1d5be | 6557 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
6558 | .permission = nfs_permission, |
6559 | .getattr = nfs_getattr, | |
6560 | .setattr = nfs_setattr, | |
64c2ce8b AK |
6561 | .getxattr = generic_getxattr, |
6562 | .setxattr = generic_setxattr, | |
6563 | .listxattr = generic_listxattr, | |
6564 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
6565 | }; |
6566 | ||
509de811 | 6567 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
6568 | .version = 4, /* protocol version */ |
6569 | .dentry_ops = &nfs4_dentry_operations, | |
6570 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 6571 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 6572 | .file_ops = &nfs4_file_operations, |
1da177e4 | 6573 | .getroot = nfs4_proc_get_root, |
281cad46 | 6574 | .submount = nfs4_submount, |
1da177e4 LT |
6575 | .getattr = nfs4_proc_getattr, |
6576 | .setattr = nfs4_proc_setattr, | |
6577 | .lookup = nfs4_proc_lookup, | |
6578 | .access = nfs4_proc_access, | |
6579 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
6580 | .create = nfs4_proc_create, |
6581 | .remove = nfs4_proc_remove, | |
6582 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 6583 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 LT |
6584 | .unlink_done = nfs4_proc_unlink_done, |
6585 | .rename = nfs4_proc_rename, | |
d3d4152a | 6586 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 6587 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 6588 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
6589 | .link = nfs4_proc_link, |
6590 | .symlink = nfs4_proc_symlink, | |
6591 | .mkdir = nfs4_proc_mkdir, | |
6592 | .rmdir = nfs4_proc_remove, | |
6593 | .readdir = nfs4_proc_readdir, | |
6594 | .mknod = nfs4_proc_mknod, | |
6595 | .statfs = nfs4_proc_statfs, | |
6596 | .fsinfo = nfs4_proc_fsinfo, | |
6597 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 6598 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
6599 | .decode_dirent = nfs4_decode_dirent, |
6600 | .read_setup = nfs4_proc_read_setup, | |
ea7c3303 | 6601 | .read_rpc_prepare = nfs4_proc_read_rpc_prepare, |
ec06c096 | 6602 | .read_done = nfs4_read_done, |
1da177e4 | 6603 | .write_setup = nfs4_proc_write_setup, |
c6cb80d0 | 6604 | .write_rpc_prepare = nfs4_proc_write_rpc_prepare, |
788e7a89 | 6605 | .write_done = nfs4_write_done, |
1da177e4 | 6606 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 6607 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 6608 | .commit_done = nfs4_commit_done, |
1da177e4 | 6609 | .lock = nfs4_proc_lock, |
e50a1c2e | 6610 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 6611 | .close_context = nfs4_close_context, |
2b484297 | 6612 | .open_context = nfs4_atomic_open, |
45a52a02 | 6613 | .init_client = nfs4_init_client, |
1da177e4 LT |
6614 | }; |
6615 | ||
64c2ce8b AK |
6616 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
6617 | .prefix = XATTR_NAME_NFSV4_ACL, | |
6618 | .list = nfs4_xattr_list_nfs4_acl, | |
6619 | .get = nfs4_xattr_get_nfs4_acl, | |
6620 | .set = nfs4_xattr_set_nfs4_acl, | |
6621 | }; | |
6622 | ||
6623 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
6624 | &nfs4_xattr_nfs4_acl_handler, | |
6625 | NULL | |
6626 | }; | |
6627 | ||
ef159e91 TM |
6628 | module_param(max_session_slots, ushort, 0644); |
6629 | MODULE_PARM_DESC(max_session_slots, "Maximum number of outstanding NFSv4.1 " | |
6630 | "requests the client will negotiate"); | |
6631 | ||
1da177e4 LT |
6632 | /* |
6633 | * Local variables: | |
6634 | * c-basic-offset: 8 | |
6635 | * End: | |
6636 | */ |