Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/nfs/nfs4proc.c | |
3 | * | |
4 | * Client-side procedure declarations for NFSv4. | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
36 | */ | |
37 | ||
38 | #include <linux/mm.h> | |
1da177e4 LT |
39 | #include <linux/delay.h> |
40 | #include <linux/errno.h> | |
41 | #include <linux/string.h> | |
652f89f6 TM |
42 | #include <linux/ratelimit.h> |
43 | #include <linux/printk.h> | |
5a0e3ad6 | 44 | #include <linux/slab.h> |
1da177e4 | 45 | #include <linux/sunrpc/clnt.h> |
8f70e95f | 46 | #include <linux/sunrpc/gss_api.h> |
1da177e4 LT |
47 | #include <linux/nfs.h> |
48 | #include <linux/nfs4.h> | |
49 | #include <linux/nfs_fs.h> | |
50 | #include <linux/nfs_page.h> | |
9b7160c5 | 51 | #include <linux/nfs_mount.h> |
1da177e4 | 52 | #include <linux/namei.h> |
02a913a7 | 53 | #include <linux/mount.h> |
99fe60d0 | 54 | #include <linux/module.h> |
6926afd1 | 55 | #include <linux/nfs_idmap.h> |
5a0ffe54 | 56 | #include <linux/sunrpc/bc_xprt.h> |
64c2ce8b | 57 | #include <linux/xattr.h> |
c7a360b0 | 58 | #include <linux/utsname.h> |
d310310c | 59 | #include <linux/freezer.h> |
1da177e4 | 60 | |
4ce79717 | 61 | #include "nfs4_fs.h" |
1da177e4 | 62 | #include "delegation.h" |
101070ca | 63 | #include "internal.h" |
006ea73e | 64 | #include "iostat.h" |
fc931582 | 65 | #include "callback.h" |
b1f69b75 | 66 | #include "pnfs.h" |
1da177e4 LT |
67 | |
68 | #define NFSDBG_FACILITY NFSDBG_PROC | |
69 | ||
2066fe89 | 70 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
71 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
72 | ||
a78cb57a TM |
73 | #define NFS4_MAX_LOOP_ON_RECOVER (10) |
74 | ||
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 | */ | |
0dbb4c67 | 199 | start = p = kmap_atomic(*readdir->pages, KM_USER0); |
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; | |
227 | kunmap_atomic(start, KM_USER0); | |
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 TM |
272 | case -NFS4ERR_OPENMODE: |
273 | if (nfs_have_delegation(inode, FMODE_READ)) { | |
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: | |
a1d0b5ee TM |
285 | if (state != NULL) |
286 | nfs_remove_bad_delegation(state->inode); | |
9e33bed5 TM |
287 | if (state == NULL) |
288 | break; | |
0400a6b0 TM |
289 | nfs4_schedule_stateid_recovery(server, state); |
290 | goto wait_on_recovery; | |
0ced63d1 TM |
291 | case -NFS4ERR_EXPIRED: |
292 | if (state != NULL) | |
293 | nfs4_schedule_stateid_recovery(server, state); | |
65de872e | 294 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 295 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
296 | nfs4_schedule_lease_recovery(clp); |
297 | goto wait_on_recovery; | |
03391693 | 298 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
299 | case -NFS4ERR_BADSESSION: |
300 | case -NFS4ERR_BADSLOT: | |
301 | case -NFS4ERR_BAD_HIGH_SLOT: | |
302 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
303 | case -NFS4ERR_DEADSESSION: | |
304 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
305 | case -NFS4ERR_SEQ_MISORDERED: | |
306 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
307 | errorcode); | |
0400a6b0 | 308 | nfs4_schedule_session_recovery(clp->cl_session); |
4745e315 | 309 | exception->retry = 1; |
b9179237 | 310 | break; |
03391693 | 311 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 312 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
313 | if (exception->timeout > HZ) { |
314 | /* We have retried a decent amount, time to | |
315 | * fail | |
316 | */ | |
317 | ret = -EBUSY; | |
318 | break; | |
319 | } | |
65de872e TM |
320 | case -NFS4ERR_GRACE: |
321 | case -NFS4ERR_DELAY: | |
2c643488 | 322 | case -EKEYEXPIRED: |
65de872e TM |
323 | ret = nfs4_delay(server->client, &exception->timeout); |
324 | if (ret != 0) | |
325 | break; | |
a8a4ae3a | 326 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
327 | case -NFS4ERR_OLD_STATEID: |
328 | exception->retry = 1; | |
b064eca2 TM |
329 | break; |
330 | case -NFS4ERR_BADOWNER: | |
331 | /* The following works around a Linux server bug! */ | |
332 | case -NFS4ERR_BADNAME: | |
333 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
334 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
335 | exception->retry = 1; | |
336 | printk(KERN_WARNING "NFS: v4 server %s " | |
337 | "does not accept raw " | |
338 | "uid/gids. " | |
339 | "Reenabling the idmapper.\n", | |
340 | server->nfs_client->cl_hostname); | |
341 | } | |
65de872e TM |
342 | } |
343 | /* We failed to handle the error */ | |
344 | return nfs4_map_errors(ret); | |
0400a6b0 | 345 | wait_on_recovery: |
a2c0b9e2 TM |
346 | ret = nfs4_wait_clnt_recover(clp); |
347 | if (ret == 0) | |
348 | exception->retry = 1; | |
349 | return ret; | |
65de872e TM |
350 | } |
351 | ||
352 | ||
452e9352 | 353 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 354 | { |
1da177e4 LT |
355 | spin_lock(&clp->cl_lock); |
356 | if (time_before(clp->cl_last_renewal,timestamp)) | |
357 | clp->cl_last_renewal = timestamp; | |
358 | spin_unlock(&clp->cl_lock); | |
359 | } | |
360 | ||
452e9352 TM |
361 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
362 | { | |
363 | do_renew_lease(server->nfs_client, timestamp); | |
364 | } | |
365 | ||
cccef3b9 AA |
366 | #if defined(CONFIG_NFS_V4_1) |
367 | ||
e2c4ab3c AA |
368 | /* |
369 | * nfs4_free_slot - free a slot and efficiently update slot table. | |
370 | * | |
371 | * freeing a slot is trivially done by clearing its respective bit | |
372 | * in the bitmap. | |
373 | * If the freed slotid equals highest_used_slotid we want to update it | |
374 | * so that the server would be able to size down the slot table if needed, | |
375 | * otherwise we know that the highest_used_slotid is still in use. | |
376 | * When updating highest_used_slotid there may be "holes" in the bitmap | |
377 | * so we need to scan down from highest_used_slotid to 0 looking for the now | |
378 | * highest slotid in use. | |
45d43c29 | 379 | * If none found, highest_used_slotid is set to NFS4_NO_SLOT. |
35dc1d74 TM |
380 | * |
381 | * Must be called while holding tbl->slot_tbl_lock | |
e2c4ab3c AA |
382 | */ |
383 | static void | |
45d43c29 | 384 | nfs4_free_slot(struct nfs4_slot_table *tbl, u32 slotid) |
e2c4ab3c | 385 | { |
45d43c29 | 386 | BUG_ON(slotid >= NFS4_MAX_SLOT_TABLE); |
e2c4ab3c AA |
387 | /* clear used bit in bitmap */ |
388 | __clear_bit(slotid, tbl->used_slots); | |
389 | ||
390 | /* update highest_used_slotid when it is freed */ | |
391 | if (slotid == tbl->highest_used_slotid) { | |
392 | slotid = find_last_bit(tbl->used_slots, tbl->max_slots); | |
bcb56164 | 393 | if (slotid < tbl->max_slots) |
e2c4ab3c AA |
394 | tbl->highest_used_slotid = slotid; |
395 | else | |
45d43c29 | 396 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
e2c4ab3c | 397 | } |
45d43c29 TM |
398 | dprintk("%s: slotid %u highest_used_slotid %d\n", __func__, |
399 | slotid, tbl->highest_used_slotid); | |
e2c4ab3c AA |
400 | } |
401 | ||
961a828d TM |
402 | bool nfs4_set_task_privileged(struct rpc_task *task, void *dummy) |
403 | { | |
404 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
405 | return true; | |
406 | } | |
407 | ||
3bfb0fc5 | 408 | /* |
42acd021 | 409 | * Signal state manager thread if session fore channel is drained |
3bfb0fc5 | 410 | */ |
42acd021 | 411 | static void nfs4_check_drain_fc_complete(struct nfs4_session *ses) |
3bfb0fc5 | 412 | { |
a2118c33 | 413 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state)) { |
961a828d TM |
414 | rpc_wake_up_first(&ses->fc_slot_table.slot_tbl_waitq, |
415 | nfs4_set_task_privileged, NULL); | |
3bfb0fc5 AB |
416 | return; |
417 | } | |
418 | ||
45d43c29 | 419 | if (ses->fc_slot_table.highest_used_slotid != NFS4_NO_SLOT) |
3bfb0fc5 AB |
420 | return; |
421 | ||
42acd021 AA |
422 | dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__); |
423 | complete(&ses->fc_slot_table.complete); | |
424 | } | |
425 | ||
426 | /* | |
427 | * Signal state manager thread if session back channel is drained | |
428 | */ | |
429 | void nfs4_check_drain_bc_complete(struct nfs4_session *ses) | |
430 | { | |
431 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state) || | |
45d43c29 | 432 | ses->bc_slot_table.highest_used_slotid != NFS4_NO_SLOT) |
42acd021 AA |
433 | return; |
434 | dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__); | |
435 | complete(&ses->bc_slot_table.complete); | |
3bfb0fc5 AB |
436 | } |
437 | ||
d185a334 | 438 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 AA |
439 | { |
440 | struct nfs4_slot_table *tbl; | |
441 | ||
d185a334 | 442 | tbl = &res->sr_session->fc_slot_table; |
dfb4f309 | 443 | if (!res->sr_slot) { |
13615871 AA |
444 | /* just wake up the next guy waiting since |
445 | * we may have not consumed a slot after all */ | |
691daf3b | 446 | dprintk("%s: No slot\n", __func__); |
35dc1d74 | 447 | return; |
13615871 | 448 | } |
ea028ac9 | 449 | |
35dc1d74 | 450 | spin_lock(&tbl->slot_tbl_lock); |
aabd0b40 | 451 | nfs4_free_slot(tbl, res->sr_slot - tbl->slots); |
42acd021 | 452 | nfs4_check_drain_fc_complete(res->sr_session); |
35dc1d74 | 453 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 454 | res->sr_slot = NULL; |
13615871 AA |
455 | } |
456 | ||
14516c3a | 457 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c AA |
458 | { |
459 | unsigned long timestamp; | |
14516c3a | 460 | struct nfs_client *clp; |
b0df806c AA |
461 | |
462 | /* | |
463 | * sr_status remains 1 if an RPC level error occurred. The server | |
464 | * may or may not have processed the sequence operation.. | |
465 | * Proceed as if the server received and processed the sequence | |
466 | * operation. | |
467 | */ | |
468 | if (res->sr_status == 1) | |
469 | res->sr_status = NFS_OK; | |
470 | ||
468f8613 BS |
471 | /* don't increment the sequence number if the task wasn't sent */ |
472 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
473 | goto out; |
474 | ||
691daf3b | 475 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
476 | switch (res->sr_status) { |
477 | case 0: | |
b0df806c | 478 | /* Update the slot's sequence and clientid lease timer */ |
dfb4f309 | 479 | ++res->sr_slot->seq_nr; |
b0df806c | 480 | timestamp = res->sr_renewal_time; |
14516c3a | 481 | clp = res->sr_session->clp; |
452e9352 | 482 | do_renew_lease(clp, timestamp); |
0629e370 | 483 | /* Check sequence flags */ |
b4410c2f TM |
484 | if (res->sr_status_flags != 0) |
485 | nfs4_schedule_lease_recovery(clp); | |
14516c3a TM |
486 | break; |
487 | case -NFS4ERR_DELAY: | |
488 | /* The server detected a resend of the RPC call and | |
489 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
490 | * of RFC5661. | |
491 | */ | |
12364a4f | 492 | dprintk("%s: slot=%td seq=%d: Operation in progress\n", |
dfb4f309 BH |
493 | __func__, |
494 | res->sr_slot - res->sr_session->fc_slot_table.slots, | |
495 | res->sr_slot->seq_nr); | |
14516c3a TM |
496 | goto out_retry; |
497 | default: | |
498 | /* Just update the slot sequence no. */ | |
dfb4f309 | 499 | ++res->sr_slot->seq_nr; |
b0df806c AA |
500 | } |
501 | out: | |
502 | /* The session may be reset by one of the error handlers. */ | |
503 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 504 | nfs41_sequence_free_slot(res); |
14516c3a TM |
505 | return 1; |
506 | out_retry: | |
d05dd4e9 | 507 | if (!rpc_restart_call(task)) |
14516c3a TM |
508 | goto out; |
509 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
510 | return 0; | |
b0df806c AA |
511 | } |
512 | ||
14516c3a TM |
513 | static int nfs4_sequence_done(struct rpc_task *task, |
514 | struct nfs4_sequence_res *res) | |
df896455 | 515 | { |
14516c3a TM |
516 | if (res->sr_session == NULL) |
517 | return 1; | |
518 | return nfs41_sequence_done(task, res); | |
df896455 TM |
519 | } |
520 | ||
510b8175 BH |
521 | /* |
522 | * nfs4_find_slot - efficiently look for a free slot | |
523 | * | |
524 | * nfs4_find_slot looks for an unset bit in the used_slots bitmap. | |
525 | * If found, we mark the slot as used, update the highest_used_slotid, | |
526 | * and respectively set up the sequence operation args. | |
45d43c29 | 527 | * The slot number is returned if found, or NFS4_NO_SLOT otherwise. |
fbcd4abc AA |
528 | * |
529 | * Note: must be called with under the slot_tbl_lock. | |
510b8175 | 530 | */ |
45d43c29 | 531 | static u32 |
40ead580 | 532 | nfs4_find_slot(struct nfs4_slot_table *tbl) |
510b8175 | 533 | { |
45d43c29 TM |
534 | u32 slotid; |
535 | u32 ret_id = NFS4_NO_SLOT; | |
510b8175 | 536 | |
45d43c29 | 537 | dprintk("--> %s used_slots=%04lx highest_used=%u max_slots=%u\n", |
510b8175 BH |
538 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, |
539 | tbl->max_slots); | |
540 | slotid = find_first_zero_bit(tbl->used_slots, tbl->max_slots); | |
541 | if (slotid >= tbl->max_slots) | |
542 | goto out; | |
543 | __set_bit(slotid, tbl->used_slots); | |
45d43c29 TM |
544 | if (slotid > tbl->highest_used_slotid || |
545 | tbl->highest_used_slotid == NFS4_NO_SLOT) | |
510b8175 BH |
546 | tbl->highest_used_slotid = slotid; |
547 | ret_id = slotid; | |
548 | out: | |
549 | dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n", | |
550 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, ret_id); | |
510b8175 BH |
551 | return ret_id; |
552 | } | |
553 | ||
9d12b216 TM |
554 | static void nfs41_init_sequence(struct nfs4_sequence_args *args, |
555 | struct nfs4_sequence_res *res, int cache_reply) | |
556 | { | |
557 | args->sa_session = NULL; | |
558 | args->sa_cache_this = 0; | |
559 | if (cache_reply) | |
560 | args->sa_cache_this = 1; | |
561 | res->sr_session = NULL; | |
562 | res->sr_slot = NULL; | |
563 | } | |
564 | ||
dc70d7b3 | 565 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
566 | struct nfs4_sequence_args *args, |
567 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
568 | struct rpc_task *task) |
569 | { | |
fbcd4abc AA |
570 | struct nfs4_slot *slot; |
571 | struct nfs4_slot_table *tbl; | |
45d43c29 | 572 | u32 slotid; |
fbcd4abc AA |
573 | |
574 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 575 | /* slot already allocated? */ |
dfb4f309 | 576 | if (res->sr_slot != NULL) |
ce5039c1 AA |
577 | return 0; |
578 | ||
fbcd4abc AA |
579 | tbl = &session->fc_slot_table; |
580 | ||
581 | spin_lock(&tbl->slot_tbl_lock); | |
a2118c33 | 582 | if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) && |
5601a00d | 583 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { |
0b1c8fc4 | 584 | /* The state manager will wait until the slot table is empty */ |
05f0d236 | 585 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
b069d94a | 586 | spin_unlock(&tbl->slot_tbl_lock); |
0b1c8fc4 | 587 | dprintk("%s session is draining\n", __func__); |
05f0d236 | 588 | return -EAGAIN; |
b069d94a AA |
589 | } |
590 | ||
689cf5c1 AB |
591 | if (!rpc_queue_empty(&tbl->slot_tbl_waitq) && |
592 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { | |
593 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
594 | spin_unlock(&tbl->slot_tbl_lock); | |
595 | dprintk("%s enforce FIFO order\n", __func__); | |
596 | return -EAGAIN; | |
597 | } | |
598 | ||
40ead580 | 599 | slotid = nfs4_find_slot(tbl); |
45d43c29 | 600 | if (slotid == NFS4_NO_SLOT) { |
fbcd4abc AA |
601 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
602 | spin_unlock(&tbl->slot_tbl_lock); | |
603 | dprintk("<-- %s: no free slots\n", __func__); | |
604 | return -EAGAIN; | |
605 | } | |
606 | spin_unlock(&tbl->slot_tbl_lock); | |
607 | ||
689cf5c1 | 608 | rpc_task_set_priority(task, RPC_PRIORITY_NORMAL); |
fbcd4abc | 609 | slot = tbl->slots + slotid; |
99fe60d0 | 610 | args->sa_session = session; |
fbcd4abc | 611 | args->sa_slotid = slotid; |
fbcd4abc AA |
612 | |
613 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, slotid, slot->seq_nr); | |
614 | ||
99fe60d0 | 615 | res->sr_session = session; |
dfb4f309 | 616 | res->sr_slot = slot; |
fbcd4abc | 617 | res->sr_renewal_time = jiffies; |
2a6e26cd | 618 | res->sr_status_flags = 0; |
fbcd4abc AA |
619 | /* |
620 | * sr_status is only set in decode_sequence, and so will remain | |
621 | * set to 1 if an rpc level failure occurs. | |
622 | */ | |
623 | res->sr_status = 1; | |
ce5039c1 AA |
624 | return 0; |
625 | } | |
dc70d7b3 | 626 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 627 | |
035168ab | 628 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
629 | struct nfs4_sequence_args *args, |
630 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
631 | struct rpc_task *task) |
632 | { | |
035168ab | 633 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
634 | int ret = 0; |
635 | ||
9d12b216 | 636 | if (session == NULL) |
035168ab | 637 | goto out; |
035168ab | 638 | |
12364a4f | 639 | dprintk("--> %s clp %p session %p sr_slot %td\n", |
dfb4f309 BH |
640 | __func__, session->clp, session, res->sr_slot ? |
641 | res->sr_slot - session->fc_slot_table.slots : -1); | |
ce5039c1 | 642 | |
9d12b216 | 643 | ret = nfs41_setup_sequence(session, args, res, task); |
ce5039c1 AA |
644 | out: |
645 | dprintk("<-- %s status=%d\n", __func__, ret); | |
646 | return ret; | |
647 | } | |
648 | ||
649 | struct nfs41_call_sync_data { | |
035168ab | 650 | const struct nfs_server *seq_server; |
ce5039c1 AA |
651 | struct nfs4_sequence_args *seq_args; |
652 | struct nfs4_sequence_res *seq_res; | |
ce5039c1 AA |
653 | }; |
654 | ||
655 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
656 | { | |
657 | struct nfs41_call_sync_data *data = calldata; | |
658 | ||
035168ab TM |
659 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
660 | ||
661 | if (nfs4_setup_sequence(data->seq_server, data->seq_args, | |
9d12b216 | 662 | data->seq_res, task)) |
ce5039c1 AA |
663 | return; |
664 | rpc_call_start(task); | |
665 | } | |
666 | ||
b257957e AB |
667 | static void nfs41_call_priv_sync_prepare(struct rpc_task *task, void *calldata) |
668 | { | |
669 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
670 | nfs41_call_sync_prepare(task, calldata); | |
671 | } | |
672 | ||
69ab40c4 AA |
673 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
674 | { | |
675 | struct nfs41_call_sync_data *data = calldata; | |
676 | ||
14516c3a | 677 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
678 | } |
679 | ||
17280175 | 680 | static const struct rpc_call_ops nfs41_call_sync_ops = { |
ce5039c1 | 681 | .rpc_call_prepare = nfs41_call_sync_prepare, |
69ab40c4 | 682 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
683 | }; |
684 | ||
17280175 | 685 | static const struct rpc_call_ops nfs41_call_priv_sync_ops = { |
b257957e AB |
686 | .rpc_call_prepare = nfs41_call_priv_sync_prepare, |
687 | .rpc_call_done = nfs41_call_sync_done, | |
688 | }; | |
689 | ||
7c513058 BS |
690 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
691 | struct nfs_server *server, | |
ce5039c1 AA |
692 | struct rpc_message *msg, |
693 | struct nfs4_sequence_args *args, | |
694 | struct nfs4_sequence_res *res, | |
b257957e | 695 | int privileged) |
ce5039c1 AA |
696 | { |
697 | int ret; | |
698 | struct rpc_task *task; | |
699 | struct nfs41_call_sync_data data = { | |
035168ab | 700 | .seq_server = server, |
ce5039c1 AA |
701 | .seq_args = args, |
702 | .seq_res = res, | |
ce5039c1 AA |
703 | }; |
704 | struct rpc_task_setup task_setup = { | |
7c513058 | 705 | .rpc_client = clnt, |
ce5039c1 AA |
706 | .rpc_message = msg, |
707 | .callback_ops = &nfs41_call_sync_ops, | |
708 | .callback_data = &data | |
709 | }; | |
710 | ||
b257957e AB |
711 | if (privileged) |
712 | task_setup.callback_ops = &nfs41_call_priv_sync_ops; | |
ce5039c1 AA |
713 | task = rpc_run_task(&task_setup); |
714 | if (IS_ERR(task)) | |
715 | ret = PTR_ERR(task); | |
716 | else { | |
717 | ret = task->tk_status; | |
718 | rpc_put_task(task); | |
719 | } | |
720 | return ret; | |
721 | } | |
722 | ||
7c513058 BS |
723 | int _nfs4_call_sync_session(struct rpc_clnt *clnt, |
724 | struct nfs_server *server, | |
cccef3b9 AA |
725 | struct rpc_message *msg, |
726 | struct nfs4_sequence_args *args, | |
727 | struct nfs4_sequence_res *res, | |
728 | int cache_reply) | |
729 | { | |
9d12b216 TM |
730 | nfs41_init_sequence(args, res, cache_reply); |
731 | return nfs4_call_sync_sequence(clnt, server, msg, args, res, 0); | |
cccef3b9 AA |
732 | } |
733 | ||
df896455 | 734 | #else |
9d12b216 TM |
735 | static inline |
736 | void nfs41_init_sequence(struct nfs4_sequence_args *args, | |
737 | struct nfs4_sequence_res *res, int cache_reply) | |
738 | { | |
739 | } | |
740 | ||
14516c3a TM |
741 | static int nfs4_sequence_done(struct rpc_task *task, |
742 | struct nfs4_sequence_res *res) | |
df896455 | 743 | { |
14516c3a | 744 | return 1; |
df896455 | 745 | } |
cccef3b9 AA |
746 | #endif /* CONFIG_NFS_V4_1 */ |
747 | ||
7c513058 BS |
748 | int _nfs4_call_sync(struct rpc_clnt *clnt, |
749 | struct nfs_server *server, | |
cccef3b9 AA |
750 | struct rpc_message *msg, |
751 | struct nfs4_sequence_args *args, | |
752 | struct nfs4_sequence_res *res, | |
753 | int cache_reply) | |
754 | { | |
9d12b216 | 755 | nfs41_init_sequence(args, res, cache_reply); |
7c513058 | 756 | return rpc_call_sync(clnt, msg, 0); |
cccef3b9 AA |
757 | } |
758 | ||
e73b83f2 | 759 | static inline |
7c513058 BS |
760 | int nfs4_call_sync(struct rpc_clnt *clnt, |
761 | struct nfs_server *server, | |
e73b83f2 BS |
762 | struct rpc_message *msg, |
763 | struct nfs4_sequence_args *args, | |
764 | struct nfs4_sequence_res *res, | |
765 | int cache_reply) | |
766 | { | |
7c513058 BS |
767 | return server->nfs_client->cl_mvops->call_sync(clnt, server, msg, |
768 | args, res, cache_reply); | |
e73b83f2 | 769 | } |
cccef3b9 | 770 | |
38478b24 | 771 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 772 | { |
38478b24 | 773 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 774 | |
38478b24 | 775 | spin_lock(&dir->i_lock); |
40d24704 | 776 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; |
a9a4a87a | 777 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 778 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 779 | dir->i_version = cinfo->after; |
38478b24 | 780 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
781 | } |
782 | ||
e56e0b78 | 783 | struct nfs4_opendata { |
c6d00e63 | 784 | struct kref kref; |
e56e0b78 TM |
785 | struct nfs_openargs o_arg; |
786 | struct nfs_openres o_res; | |
cdd4e68b TM |
787 | struct nfs_open_confirmargs c_arg; |
788 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
789 | struct nfs4_string owner_name; |
790 | struct nfs4_string group_name; | |
e56e0b78 TM |
791 | struct nfs_fattr f_attr; |
792 | struct nfs_fattr dir_attr; | |
e56e0b78 | 793 | struct dentry *dir; |
82a2c1b7 | 794 | struct dentry *dentry; |
e56e0b78 | 795 | struct nfs4_state_owner *owner; |
aac00a8d | 796 | struct nfs4_state *state; |
e56e0b78 | 797 | struct iattr attrs; |
26e976a8 | 798 | unsigned long timestamp; |
3e309914 | 799 | unsigned int rpc_done : 1; |
24ac23ab TM |
800 | int rpc_status; |
801 | int cancelled; | |
e56e0b78 TM |
802 | }; |
803 | ||
2ced46c2 TM |
804 | |
805 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
806 | { | |
807 | p->o_res.f_attr = &p->f_attr; | |
808 | p->o_res.dir_attr = &p->dir_attr; | |
c1d51931 TM |
809 | p->o_res.seqid = p->o_arg.seqid; |
810 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 TM |
811 | p->o_res.server = p->o_arg.server; |
812 | nfs_fattr_init(&p->f_attr); | |
813 | nfs_fattr_init(&p->dir_attr); | |
6926afd1 | 814 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
815 | } |
816 | ||
82a2c1b7 | 817 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 818 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be TM |
819 | const struct iattr *attrs, |
820 | gfp_t gfp_mask) | |
e56e0b78 | 821 | { |
82a2c1b7 | 822 | struct dentry *parent = dget_parent(dentry); |
e56e0b78 TM |
823 | struct inode *dir = parent->d_inode; |
824 | struct nfs_server *server = NFS_SERVER(dir); | |
825 | struct nfs4_opendata *p; | |
826 | ||
8535b2be | 827 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
828 | if (p == NULL) |
829 | goto err; | |
8535b2be | 830 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 TM |
831 | if (p->o_arg.seqid == NULL) |
832 | goto err_free; | |
82a2c1b7 AV |
833 | nfs_sb_active(dentry->d_sb); |
834 | p->dentry = dget(dentry); | |
e56e0b78 TM |
835 | p->dir = parent; |
836 | p->owner = sp; | |
837 | atomic_inc(&sp->so_count); | |
838 | p->o_arg.fh = NFS_FH(dir); | |
dc0b027d TM |
839 | p->o_arg.open_flags = flags; |
840 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
7539bbab | 841 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 842 | p->o_arg.id = 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 | } | |
24ac23ab | 1470 | /* Update sequence id. */ |
48c22eb2 | 1471 | data->o_arg.id = sp->so_seqid.owner_id; |
1f0e890d | 1472 | data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; |
6f220ed5 | 1473 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 1474 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
6f220ed5 TM |
1475 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1476 | } | |
26e976a8 | 1477 | data->timestamp = jiffies; |
035168ab | 1478 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 1479 | &data->o_arg.seq_args, |
9d12b216 | 1480 | &data->o_res.seq_res, task)) |
d898528c | 1481 | return; |
5138fde0 | 1482 | rpc_call_start(task); |
6ee41268 | 1483 | return; |
652f89f6 TM |
1484 | unlock_no_action: |
1485 | rcu_read_unlock(); | |
6ee41268 TM |
1486 | out_no_action: |
1487 | task->tk_action = NULL; | |
1488 | ||
24ac23ab | 1489 | } |
1da177e4 | 1490 | |
b257957e AB |
1491 | static void nfs4_recover_open_prepare(struct rpc_task *task, void *calldata) |
1492 | { | |
1493 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
1494 | nfs4_open_prepare(task, calldata); | |
1495 | } | |
1496 | ||
24ac23ab TM |
1497 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1498 | { | |
1499 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1500 | |
24ac23ab | 1501 | data->rpc_status = task->tk_status; |
d898528c | 1502 | |
14516c3a TM |
1503 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1504 | return; | |
d898528c | 1505 | |
24ac23ab TM |
1506 | if (task->tk_status == 0) { |
1507 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1508 | case S_IFREG: |
1509 | break; | |
1510 | case S_IFLNK: | |
24ac23ab | 1511 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1512 | break; |
1513 | case S_IFDIR: | |
24ac23ab | 1514 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1515 | break; |
1516 | default: | |
24ac23ab | 1517 | data->rpc_status = -ENOTDIR; |
6f926b5b | 1518 | } |
26e976a8 | 1519 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1520 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1521 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1522 | } |
3e309914 | 1523 | data->rpc_done = 1; |
24ac23ab | 1524 | } |
6f926b5b | 1525 | |
24ac23ab TM |
1526 | static void nfs4_open_release(void *calldata) |
1527 | { | |
1528 | struct nfs4_opendata *data = calldata; | |
1529 | struct nfs4_state *state = NULL; | |
1530 | ||
1531 | /* If this request hasn't been cancelled, do nothing */ | |
1532 | if (data->cancelled == 0) | |
1533 | goto out_free; | |
1534 | /* In case of error, no cleanup! */ | |
3e309914 | 1535 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1536 | goto out_free; |
1537 | /* In case we need an open_confirm, no cleanup! */ | |
1538 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1539 | goto out_free; | |
24ac23ab | 1540 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1541 | if (!IS_ERR(state)) |
643168c2 | 1542 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1543 | out_free: |
c6d00e63 | 1544 | nfs4_opendata_put(data); |
24ac23ab TM |
1545 | } |
1546 | ||
1547 | static const struct rpc_call_ops nfs4_open_ops = { | |
1548 | .rpc_call_prepare = nfs4_open_prepare, | |
1549 | .rpc_call_done = nfs4_open_done, | |
1550 | .rpc_release = nfs4_open_release, | |
1551 | }; | |
1552 | ||
b257957e AB |
1553 | static const struct rpc_call_ops nfs4_recover_open_ops = { |
1554 | .rpc_call_prepare = nfs4_recover_open_prepare, | |
1555 | .rpc_call_done = nfs4_open_done, | |
1556 | .rpc_release = nfs4_open_release, | |
1557 | }; | |
1558 | ||
1559 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) | |
24ac23ab TM |
1560 | { |
1561 | struct inode *dir = data->dir->d_inode; | |
1562 | struct nfs_server *server = NFS_SERVER(dir); | |
1563 | struct nfs_openargs *o_arg = &data->o_arg; | |
1564 | struct nfs_openres *o_res = &data->o_res; | |
1565 | struct rpc_task *task; | |
5138fde0 TM |
1566 | struct rpc_message msg = { |
1567 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1568 | .rpc_argp = o_arg, | |
1569 | .rpc_resp = o_res, | |
1570 | .rpc_cred = data->owner->so_cred, | |
1571 | }; | |
c970aa85 TM |
1572 | struct rpc_task_setup task_setup_data = { |
1573 | .rpc_client = server->client, | |
5138fde0 | 1574 | .rpc_message = &msg, |
c970aa85 TM |
1575 | .callback_ops = &nfs4_open_ops, |
1576 | .callback_data = data, | |
101070ca | 1577 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1578 | .flags = RPC_TASK_ASYNC, |
1579 | }; | |
24ac23ab TM |
1580 | int status; |
1581 | ||
9d12b216 | 1582 | nfs41_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 1583 | kref_get(&data->kref); |
3e309914 TM |
1584 | data->rpc_done = 0; |
1585 | data->rpc_status = 0; | |
2ced46c2 | 1586 | data->cancelled = 0; |
b257957e AB |
1587 | if (isrecover) |
1588 | task_setup_data.callback_ops = &nfs4_recover_open_ops; | |
c970aa85 | 1589 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1590 | if (IS_ERR(task)) |
1591 | return PTR_ERR(task); | |
1592 | status = nfs4_wait_for_completion_rpc_task(task); | |
1593 | if (status != 0) { | |
1594 | data->cancelled = 1; | |
1595 | smp_wmb(); | |
1596 | } else | |
1597 | status = data->rpc_status; | |
1598 | rpc_put_task(task); | |
1599 | ||
1600 | return status; | |
1601 | } | |
1602 | ||
1603 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1604 | { | |
1605 | struct inode *dir = data->dir->d_inode; | |
1606 | struct nfs_openres *o_res = &data->o_res; | |
1607 | int status; | |
1608 | ||
1609 | status = nfs4_run_open_task(data, 1); | |
1610 | if (status != 0 || !data->rpc_done) | |
1611 | return status; | |
1612 | ||
6926afd1 TM |
1613 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
1614 | ||
b257957e AB |
1615 | nfs_refresh_inode(dir, o_res->dir_attr); |
1616 | ||
1617 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { | |
1618 | status = _nfs4_proc_open_confirm(data); | |
1619 | if (status != 0) | |
1620 | return status; | |
1621 | } | |
1622 | ||
1623 | return status; | |
1624 | } | |
1625 | ||
1626 | /* | |
1627 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1628 | */ | |
1629 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1630 | { | |
1631 | struct inode *dir = data->dir->d_inode; | |
1632 | struct nfs_server *server = NFS_SERVER(dir); | |
1633 | struct nfs_openargs *o_arg = &data->o_arg; | |
1634 | struct nfs_openres *o_res = &data->o_res; | |
1635 | int status; | |
1636 | ||
1637 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
1638 | if (!data->rpc_done) |
1639 | return status; | |
1640 | if (status != 0) { | |
1641 | if (status == -NFS4ERR_BADNAME && | |
1642 | !(o_arg->open_flags & O_CREAT)) | |
1643 | return -ENOENT; | |
24ac23ab | 1644 | return status; |
08ef7bd3 | 1645 | } |
24ac23ab | 1646 | |
6926afd1 TM |
1647 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
1648 | ||
56ae19f3 TM |
1649 | if (o_arg->open_flags & O_CREAT) { |
1650 | update_changeattr(dir, &o_res->cinfo); | |
1651 | nfs_post_op_update_inode(dir, o_res->dir_attr); | |
1652 | } else | |
1653 | nfs_refresh_inode(dir, o_res->dir_attr); | |
0df5dd4a TM |
1654 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1655 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1656 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1657 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1658 | if (status != 0) |
24ac23ab | 1659 | return status; |
1da177e4 LT |
1660 | } |
1661 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1662 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1663 | return 0; |
1da177e4 LT |
1664 | } |
1665 | ||
d83217c1 | 1666 | static int nfs4_client_recover_expired_lease(struct nfs_client *clp) |
58d9714a | 1667 | { |
a78cb57a | 1668 | unsigned int loop; |
6b30954e | 1669 | int ret; |
58d9714a | 1670 | |
a78cb57a | 1671 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { |
65de872e | 1672 | ret = nfs4_wait_clnt_recover(clp); |
6b30954e | 1673 | if (ret != 0) |
a78cb57a | 1674 | break; |
e598d843 TM |
1675 | if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) && |
1676 | !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state)) | |
6b30954e | 1677 | break; |
0400a6b0 | 1678 | nfs4_schedule_state_manager(clp); |
a78cb57a | 1679 | ret = -EIO; |
6b30954e | 1680 | } |
a78cb57a | 1681 | return ret; |
58d9714a TM |
1682 | } |
1683 | ||
d83217c1 AA |
1684 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1685 | { | |
1686 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1687 | } | |
1688 | ||
1da177e4 LT |
1689 | /* |
1690 | * OPEN_EXPIRED: | |
1691 | * reclaim state on the server after a network partition. | |
1692 | * Assumes caller holds the appropriate lock | |
1693 | */ | |
539cd03a | 1694 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1695 | { |
e56e0b78 | 1696 | struct nfs4_opendata *opendata; |
864472e9 | 1697 | int ret; |
1da177e4 | 1698 | |
6f220ed5 TM |
1699 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1700 | if (IS_ERR(opendata)) | |
1701 | return PTR_ERR(opendata); | |
864472e9 | 1702 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1703 | if (ret == -ESTALE) |
3d4ff43d | 1704 | d_drop(ctx->dentry); |
c6d00e63 | 1705 | nfs4_opendata_put(opendata); |
864472e9 | 1706 | return ret; |
1da177e4 LT |
1707 | } |
1708 | ||
a9ed2e25 | 1709 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1710 | { |
539cd03a | 1711 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1712 | struct nfs4_exception exception = { }; |
1713 | int err; | |
1714 | ||
1715 | do { | |
539cd03a | 1716 | err = _nfs4_open_expired(ctx, state); |
a9ed2e25 TM |
1717 | switch (err) { |
1718 | default: | |
1719 | goto out; | |
1720 | case -NFS4ERR_GRACE: | |
1721 | case -NFS4ERR_DELAY: | |
1722 | nfs4_handle_exception(server, err, &exception); | |
1723 | err = 0; | |
1724 | } | |
202b50dc | 1725 | } while (exception.retry); |
a9ed2e25 | 1726 | out: |
202b50dc TM |
1727 | return err; |
1728 | } | |
1729 | ||
1da177e4 LT |
1730 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1731 | { | |
1da177e4 | 1732 | struct nfs_open_context *ctx; |
864472e9 | 1733 | int ret; |
1da177e4 | 1734 | |
864472e9 TM |
1735 | ctx = nfs4_state_find_open_context(state); |
1736 | if (IS_ERR(ctx)) | |
1737 | return PTR_ERR(ctx); | |
539cd03a | 1738 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1739 | put_nfs_open_context(ctx); |
1740 | return ret; | |
1da177e4 LT |
1741 | } |
1742 | ||
f062eb6c | 1743 | #if defined(CONFIG_NFS_V4_1) |
b01dd1d8 | 1744 | static int nfs41_check_expired_stateid(struct nfs4_state *state, nfs4_stateid *stateid, unsigned int flags) |
f062eb6c | 1745 | { |
b01dd1d8 | 1746 | int status = NFS_OK; |
f062eb6c BS |
1747 | struct nfs_server *server = NFS_SERVER(state->inode); |
1748 | ||
b01dd1d8 BS |
1749 | if (state->flags & flags) { |
1750 | status = nfs41_test_stateid(server, stateid); | |
1751 | if (status != NFS_OK) { | |
1752 | nfs41_free_stateid(server, stateid); | |
1753 | state->flags &= ~flags; | |
1754 | } | |
1755 | } | |
1756 | return status; | |
1757 | } | |
1758 | ||
1759 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
1760 | { | |
1761 | int deleg_status, open_status; | |
1762 | int deleg_flags = 1 << NFS_DELEGATED_STATE; | |
1763 | int open_flags = (1 << NFS_O_RDONLY_STATE) | (1 << NFS_O_WRONLY_STATE) | (1 << NFS_O_RDWR_STATE); | |
1764 | ||
1765 | deleg_status = nfs41_check_expired_stateid(state, &state->stateid, deleg_flags); | |
1766 | open_status = nfs41_check_expired_stateid(state, &state->open_stateid, open_flags); | |
1767 | ||
1768 | if ((deleg_status == NFS_OK) && (open_status == NFS_OK)) | |
1769 | return NFS_OK; | |
f062eb6c BS |
1770 | return nfs4_open_expired(sp, state); |
1771 | } | |
1772 | #endif | |
1773 | ||
aa53ed54 JL |
1774 | /* |
1775 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1776 | * fields corresponding to attributes that were used to store the verifier. | |
1777 | * Make sure we clobber those fields in the later setattr call | |
1778 | */ | |
1779 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1780 | { | |
1781 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1782 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1783 | sattr->ia_valid |= ATTR_ATIME; | |
1784 | ||
1785 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1786 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1787 | sattr->ia_valid |= ATTR_MTIME; | |
1788 | } | |
1789 | ||
1da177e4 | 1790 | /* |
24ac23ab | 1791 | * Returns a referenced nfs4_state |
1da177e4 | 1792 | */ |
82a2c1b7 | 1793 | 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 |
1794 | { |
1795 | struct nfs4_state_owner *sp; | |
1796 | struct nfs4_state *state = NULL; | |
1797 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1798 | struct nfs4_opendata *opendata; |
aac00a8d | 1799 | int status; |
1da177e4 LT |
1800 | |
1801 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 1802 | status = -ENOMEM; |
d1e284d5 TM |
1803 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
1804 | if (sp == NULL) { | |
1da177e4 LT |
1805 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
1806 | goto out_err; | |
1807 | } | |
58d9714a TM |
1808 | status = nfs4_recover_expired_lease(server); |
1809 | if (status != 0) | |
b4454fe1 | 1810 | goto err_put_state_owner; |
82a2c1b7 AV |
1811 | if (dentry->d_inode != NULL) |
1812 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 1813 | status = -ENOMEM; |
82a2c1b7 | 1814 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, GFP_KERNEL); |
e56e0b78 | 1815 | if (opendata == NULL) |
95d35cb4 | 1816 | goto err_put_state_owner; |
1da177e4 | 1817 | |
82a2c1b7 AV |
1818 | if (dentry->d_inode != NULL) |
1819 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 1820 | |
24ac23ab | 1821 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1822 | if (status != 0) |
c6d00e63 | 1823 | goto err_opendata_put; |
1da177e4 | 1824 | |
24ac23ab | 1825 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1826 | status = PTR_ERR(state); |
1827 | if (IS_ERR(state)) | |
c6d00e63 | 1828 | goto err_opendata_put; |
0df5dd4a | 1829 | if (server->caps & NFS_CAP_POSIX_LOCK) |
8e469ebd | 1830 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); |
0ab64e0e TM |
1831 | |
1832 | if (opendata->o_arg.open_flags & O_EXCL) { | |
1833 | nfs4_exclusive_attrset(opendata, sattr); | |
1834 | ||
1835 | nfs_fattr_init(opendata->o_res.f_attr); | |
1836 | status = nfs4_do_setattr(state->inode, cred, | |
1837 | opendata->o_res.f_attr, sattr, | |
1838 | state); | |
1839 | if (status == 0) | |
1840 | nfs_setattr_update_inode(state->inode, sattr); | |
1841 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
1842 | } | |
c6d00e63 | 1843 | nfs4_opendata_put(opendata); |
1da177e4 | 1844 | nfs4_put_state_owner(sp); |
1da177e4 LT |
1845 | *res = state; |
1846 | return 0; | |
c6d00e63 TM |
1847 | err_opendata_put: |
1848 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
1849 | err_put_state_owner: |
1850 | nfs4_put_state_owner(sp); | |
1da177e4 | 1851 | out_err: |
1da177e4 LT |
1852 | *res = NULL; |
1853 | return status; | |
1854 | } | |
1855 | ||
1856 | ||
82a2c1b7 | 1857 | 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 |
1858 | { |
1859 | struct nfs4_exception exception = { }; | |
1860 | struct nfs4_state *res; | |
1861 | int status; | |
1862 | ||
1863 | do { | |
82a2c1b7 | 1864 | status = _nfs4_do_open(dir, dentry, fmode, flags, sattr, cred, &res); |
1da177e4 LT |
1865 | if (status == 0) |
1866 | break; | |
1867 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1868 | * book-keeping w.r.t. state-changing operations | |
1869 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1870 | * It is actually a sign of a bug on the client or on the server. | |
1871 | * | |
1872 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1873 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1874 | * have unhashed the old state_owner for us, and that we can |
1875 | * therefore safely retry using a new one. We should still warn | |
1876 | * the user though... | |
1877 | */ | |
1878 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 1879 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
1880 | " returned a bad sequence-id error!\n", |
1881 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1882 | exception.retry = 1; |
1883 | continue; | |
1884 | } | |
550f5747 TM |
1885 | /* |
1886 | * BAD_STATEID on OPEN means that the server cancelled our | |
1887 | * state before it received the OPEN_CONFIRM. | |
1888 | * Recover by retrying the request as per the discussion | |
1889 | * on Page 181 of RFC3530. | |
1890 | */ | |
1891 | if (status == -NFS4ERR_BAD_STATEID) { | |
1892 | exception.retry = 1; | |
1893 | continue; | |
1894 | } | |
aac00a8d TM |
1895 | if (status == -EAGAIN) { |
1896 | /* We must have found a delegation */ | |
1897 | exception.retry = 1; | |
1898 | continue; | |
1899 | } | |
1da177e4 LT |
1900 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1901 | status, &exception)); | |
1902 | } while (exception.retry); | |
1903 | return res; | |
1904 | } | |
1905 | ||
659bfcd6 TM |
1906 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1907 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1908 | struct nfs4_state *state) | |
1da177e4 | 1909 | { |
3e4f6290 | 1910 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1911 | struct nfs_setattrargs arg = { |
3e4f6290 | 1912 | .fh = NFS_FH(inode), |
1da177e4 LT |
1913 | .iap = sattr, |
1914 | .server = server, | |
1915 | .bitmask = server->attr_bitmask, | |
1916 | }; | |
1917 | struct nfs_setattrres res = { | |
1918 | .fattr = fattr, | |
1919 | .server = server, | |
1920 | }; | |
1921 | struct rpc_message msg = { | |
659bfcd6 TM |
1922 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
1923 | .rpc_argp = &arg, | |
1924 | .rpc_resp = &res, | |
1925 | .rpc_cred = cred, | |
1da177e4 | 1926 | }; |
26e976a8 | 1927 | unsigned long timestamp = jiffies; |
65e4308d | 1928 | int status; |
1da177e4 | 1929 | |
0e574af1 | 1930 | nfs_fattr_init(fattr); |
1da177e4 | 1931 | |
4fc8796d TM |
1932 | if (state != NULL) { |
1933 | nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, | |
1934 | current->files, current->tgid); | |
1935 | } else if (nfs4_copy_delegation_stateid(&arg.stateid, inode, | |
1936 | FMODE_WRITE)) { | |
3e4f6290 | 1937 | /* Use that stateid */ |
08e9eac4 | 1938 | } else |
f597c537 | 1939 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 1940 | |
7c513058 | 1941 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
1942 | if (status == 0 && state != NULL) |
1943 | renew_lease(server, timestamp); | |
65e4308d | 1944 | return status; |
1da177e4 LT |
1945 | } |
1946 | ||
659bfcd6 TM |
1947 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1948 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1949 | struct nfs4_state *state) | |
1da177e4 | 1950 | { |
3e4f6290 | 1951 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
1952 | struct nfs4_exception exception = { |
1953 | .state = state, | |
3114ea7a | 1954 | .inode = inode, |
a1d0b5ee | 1955 | }; |
1da177e4 LT |
1956 | int err; |
1957 | do { | |
1958 | err = nfs4_handle_exception(server, | |
659bfcd6 | 1959 | _nfs4_do_setattr(inode, cred, fattr, sattr, state), |
1da177e4 LT |
1960 | &exception); |
1961 | } while (exception.retry); | |
1962 | return err; | |
1963 | } | |
1964 | ||
1965 | struct nfs4_closedata { | |
1966 | struct inode *inode; | |
1967 | struct nfs4_state *state; | |
1968 | struct nfs_closeargs arg; | |
1969 | struct nfs_closeres res; | |
516a6af6 | 1970 | struct nfs_fattr fattr; |
26e976a8 | 1971 | unsigned long timestamp; |
f7e8917a FI |
1972 | bool roc; |
1973 | u32 roc_barrier; | |
1da177e4 LT |
1974 | }; |
1975 | ||
963d8fe5 | 1976 | static void nfs4_free_closedata(void *data) |
9512135d | 1977 | { |
963d8fe5 TM |
1978 | struct nfs4_closedata *calldata = data; |
1979 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 1980 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 1981 | |
f7e8917a FI |
1982 | if (calldata->roc) |
1983 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
1984 | nfs4_put_open_state(calldata->state); |
1985 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 1986 | nfs4_put_state_owner(sp); |
643168c2 | 1987 | nfs_sb_deactive(sb); |
9512135d TM |
1988 | kfree(calldata); |
1989 | } | |
1990 | ||
88069f77 TM |
1991 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
1992 | fmode_t fmode) | |
1993 | { | |
1994 | spin_lock(&state->owner->so_lock); | |
1995 | if (!(fmode & FMODE_READ)) | |
1996 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1997 | if (!(fmode & FMODE_WRITE)) | |
1998 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1999 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
2000 | spin_unlock(&state->owner->so_lock); | |
2001 | } | |
2002 | ||
963d8fe5 | 2003 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2004 | { |
963d8fe5 | 2005 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2006 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
2007 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
2008 | ||
a3ca5651 | 2009 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2010 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2011 | return; | |
1da177e4 LT |
2012 | /* hmm. we are done with the inode, and in the process of freeing |
2013 | * the state_owner. we keep this around to process errors | |
2014 | */ | |
1da177e4 LT |
2015 | switch (task->tk_status) { |
2016 | case 0: | |
f7e8917a FI |
2017 | if (calldata->roc) |
2018 | pnfs_roc_set_barrier(state->inode, | |
2019 | calldata->roc_barrier); | |
45328c35 | 2020 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 2021 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
2022 | nfs4_close_clear_stateid_flags(state, |
2023 | calldata->arg.fmode); | |
1da177e4 LT |
2024 | break; |
2025 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
2026 | case -NFS4ERR_OLD_STATEID: |
2027 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2028 | case -NFS4ERR_EXPIRED: |
dc0b027d | 2029 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2030 | break; |
1da177e4 | 2031 | default: |
72211dbe TM |
2032 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
2033 | rpc_restart_call_prepare(task); | |
1da177e4 | 2034 | } |
72211dbe | 2035 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2036 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2037 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2038 | } |
2039 | ||
4ce70ada | 2040 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2041 | { |
4ce70ada | 2042 | struct nfs4_closedata *calldata = data; |
9512135d | 2043 | struct nfs4_state *state = calldata->state; |
88069f77 | 2044 | int call_close = 0; |
9512135d | 2045 | |
a3ca5651 | 2046 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2047 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 2048 | return; |
003707c7 | 2049 | |
88069f77 TM |
2050 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
2051 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 2052 | spin_lock(&state->owner->so_lock); |
003707c7 | 2053 | /* Calculate the change in open mode */ |
e7616923 | 2054 | if (state->n_rdwr == 0) { |
003707c7 | 2055 | if (state->n_rdonly == 0) { |
88069f77 TM |
2056 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
2057 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2058 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
2059 | } |
2060 | if (state->n_wronly == 0) { | |
88069f77 TM |
2061 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
2062 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2063 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 2064 | } |
e7616923 | 2065 | } |
4cecb76f | 2066 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2067 | |
2068 | if (!call_close) { | |
963d8fe5 TM |
2069 | /* Note: exit _without_ calling nfs4_close_done */ |
2070 | task->tk_action = NULL; | |
a3ca5651 | 2071 | goto out; |
9512135d | 2072 | } |
88069f77 | 2073 | |
f7e8917a | 2074 | if (calldata->arg.fmode == 0) { |
88069f77 | 2075 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a FI |
2076 | if (calldata->roc && |
2077 | pnfs_roc_drain(calldata->inode, &calldata->roc_barrier)) { | |
2078 | rpc_sleep_on(&NFS_SERVER(calldata->inode)->roc_rpcwaitq, | |
2079 | task, NULL); | |
a3ca5651 | 2080 | goto out; |
f7e8917a FI |
2081 | } |
2082 | } | |
88069f77 | 2083 | |
516a6af6 | 2084 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2085 | calldata->timestamp = jiffies; |
035168ab | 2086 | if (nfs4_setup_sequence(NFS_SERVER(calldata->inode), |
9d12b216 TM |
2087 | &calldata->arg.seq_args, |
2088 | &calldata->res.seq_res, | |
2089 | task)) | |
a3ca5651 | 2090 | goto out; |
5138fde0 | 2091 | rpc_call_start(task); |
a3ca5651 CL |
2092 | out: |
2093 | dprintk("%s: done!\n", __func__); | |
1da177e4 LT |
2094 | } |
2095 | ||
963d8fe5 | 2096 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2097 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2098 | .rpc_call_done = nfs4_close_done, |
2099 | .rpc_release = nfs4_free_closedata, | |
2100 | }; | |
2101 | ||
1da177e4 LT |
2102 | /* |
2103 | * It is possible for data to be read/written from a mem-mapped file | |
2104 | * after the sys_close call (which hits the vfs layer as a flush). | |
2105 | * This means that we can't safely call nfsv4 close on a file until | |
2106 | * the inode is cleared. This in turn means that we are not good | |
2107 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2108 | * share state even when we are done with one of the three share | |
2109 | * stateid's in the inode. | |
2110 | * | |
2111 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2112 | */ | |
643168c2 | 2113 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait, bool roc) |
1da177e4 | 2114 | { |
4a35bd41 | 2115 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2116 | struct nfs4_closedata *calldata; |
b39e625b TM |
2117 | struct nfs4_state_owner *sp = state->owner; |
2118 | struct rpc_task *task; | |
5138fde0 TM |
2119 | struct rpc_message msg = { |
2120 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2121 | .rpc_cred = state->owner->so_cred, | |
2122 | }; | |
c970aa85 TM |
2123 | struct rpc_task_setup task_setup_data = { |
2124 | .rpc_client = server->client, | |
5138fde0 | 2125 | .rpc_message = &msg, |
c970aa85 | 2126 | .callback_ops = &nfs4_close_ops, |
101070ca | 2127 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2128 | .flags = RPC_TASK_ASYNC, |
2129 | }; | |
9512135d | 2130 | int status = -ENOMEM; |
1da177e4 | 2131 | |
8535b2be | 2132 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2133 | if (calldata == NULL) |
9512135d | 2134 | goto out; |
9d12b216 | 2135 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2136 | calldata->inode = state->inode; |
1da177e4 | 2137 | calldata->state = state; |
4a35bd41 | 2138 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2139 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2140 | /* Serialization for the sequence id */ |
8535b2be | 2141 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2142 | if (calldata->arg.seqid == NULL) |
2143 | goto out_free_calldata; | |
dc0b027d | 2144 | calldata->arg.fmode = 0; |
a65318bf | 2145 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2146 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2147 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2148 | calldata->res.server = server; |
f7e8917a | 2149 | calldata->roc = roc; |
643168c2 | 2150 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2151 | |
1174dd1f TM |
2152 | msg.rpc_argp = &calldata->arg; |
2153 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2154 | task_setup_data.callback_data = calldata; |
2155 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2156 | if (IS_ERR(task)) |
2157 | return PTR_ERR(task); | |
a49c3c77 TM |
2158 | status = 0; |
2159 | if (wait) | |
2160 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2161 | rpc_put_task(task); |
a49c3c77 | 2162 | return status; |
9512135d TM |
2163 | out_free_calldata: |
2164 | kfree(calldata); | |
2165 | out: | |
f7e8917a FI |
2166 | if (roc) |
2167 | pnfs_roc_release(state->inode); | |
b39e625b TM |
2168 | nfs4_put_open_state(state); |
2169 | nfs4_put_state_owner(sp); | |
9512135d | 2170 | return status; |
1da177e4 LT |
2171 | } |
2172 | ||
2b484297 | 2173 | static struct inode * |
cd9a1c0e | 2174 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2175 | { |
1da177e4 | 2176 | struct nfs4_state *state; |
1da177e4 | 2177 | |
565277f6 | 2178 | /* Protect against concurrent sillydeletes */ |
3d4ff43d | 2179 | state = nfs4_do_open(dir, ctx->dentry, ctx->mode, open_flags, attr, ctx->cred); |
f46e0bd3 TM |
2180 | if (IS_ERR(state)) |
2181 | return ERR_CAST(state); | |
cd9a1c0e | 2182 | ctx->state = state; |
f46e0bd3 | 2183 | return igrab(state->inode); |
1da177e4 LT |
2184 | } |
2185 | ||
1185a552 | 2186 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2187 | { |
2188 | if (ctx->state == NULL) | |
2189 | return; | |
2190 | if (is_sync) | |
643168c2 | 2191 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2192 | else |
643168c2 | 2193 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2194 | } |
1da177e4 LT |
2195 | |
2196 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2197 | { | |
43652ad5 BH |
2198 | struct nfs4_server_caps_arg args = { |
2199 | .fhandle = fhandle, | |
2200 | }; | |
1da177e4 LT |
2201 | struct nfs4_server_caps_res res = {}; |
2202 | struct rpc_message msg = { | |
2203 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2204 | .rpc_argp = &args, |
1da177e4 LT |
2205 | .rpc_resp = &res, |
2206 | }; | |
2207 | int status; | |
2208 | ||
7c513058 | 2209 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2210 | if (status == 0) { |
2211 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2212 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2213 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2214 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2215 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2216 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2217 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2218 | server->caps |= NFS_CAP_ACLS; | |
2219 | if (res.has_links != 0) | |
2220 | server->caps |= NFS_CAP_HARDLINKS; | |
2221 | if (res.has_symlinks != 0) | |
2222 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2223 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2224 | server->caps |= NFS_CAP_FILEID; | |
2225 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2226 | server->caps |= NFS_CAP_MODE; | |
2227 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2228 | server->caps |= NFS_CAP_NLINK; | |
2229 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2230 | server->caps |= NFS_CAP_OWNER; | |
2231 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2232 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2233 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2234 | server->caps |= NFS_CAP_ATIME; | |
2235 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2236 | server->caps |= NFS_CAP_CTIME; | |
2237 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2238 | server->caps |= NFS_CAP_MTIME; | |
2239 | ||
a65318bf TM |
2240 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2241 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2242 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 | 2243 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 2244 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 2245 | } |
cccef3b9 | 2246 | |
1da177e4 LT |
2247 | return status; |
2248 | } | |
2249 | ||
55a97593 | 2250 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2251 | { |
2252 | struct nfs4_exception exception = { }; | |
2253 | int err; | |
2254 | do { | |
2255 | err = nfs4_handle_exception(server, | |
2256 | _nfs4_server_capabilities(server, fhandle), | |
2257 | &exception); | |
2258 | } while (exception.retry); | |
2259 | return err; | |
2260 | } | |
2261 | ||
2262 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2263 | struct nfs_fsinfo *info) | |
2264 | { | |
1da177e4 LT |
2265 | struct nfs4_lookup_root_arg args = { |
2266 | .bitmask = nfs4_fattr_bitmap, | |
2267 | }; | |
2268 | struct nfs4_lookup_res res = { | |
2269 | .server = server, | |
0e574af1 | 2270 | .fattr = info->fattr, |
1da177e4 LT |
2271 | .fh = fhandle, |
2272 | }; | |
2273 | struct rpc_message msg = { | |
2274 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2275 | .rpc_argp = &args, | |
2276 | .rpc_resp = &res, | |
2277 | }; | |
008f55d0 | 2278 | |
0e574af1 | 2279 | nfs_fattr_init(info->fattr); |
7c513058 | 2280 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2281 | } |
2282 | ||
2283 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2284 | struct nfs_fsinfo *info) | |
2285 | { | |
2286 | struct nfs4_exception exception = { }; | |
2287 | int err; | |
2288 | do { | |
fb8a5ba8 BS |
2289 | err = _nfs4_lookup_root(server, fhandle, info); |
2290 | switch (err) { | |
2291 | case 0: | |
2292 | case -NFS4ERR_WRONGSEC: | |
2293 | break; | |
2294 | default: | |
2295 | err = nfs4_handle_exception(server, err, &exception); | |
2296 | } | |
1da177e4 LT |
2297 | } while (exception.retry); |
2298 | return err; | |
2299 | } | |
2300 | ||
8f70e95f BS |
2301 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2302 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2303 | { | |
2304 | struct rpc_auth *auth; | |
2305 | int ret; | |
2306 | ||
2307 | auth = rpcauth_create(flavor, server->client); | |
2308 | if (!auth) { | |
2309 | ret = -EIO; | |
2310 | goto out; | |
2311 | } | |
2312 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2313 | out: |
2314 | return ret; | |
2315 | } | |
2316 | ||
801a16dc | 2317 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2318 | struct nfs_fsinfo *info) |
1da177e4 | 2319 | { |
8f70e95f | 2320 | int i, len, status = 0; |
0fabee24 | 2321 | rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS]; |
1da177e4 | 2322 | |
801a16dc BS |
2323 | len = gss_mech_list_pseudoflavors(&flav_array[0]); |
2324 | flav_array[len] = RPC_AUTH_NULL; | |
2325 | len += 1; | |
8f70e95f BS |
2326 | |
2327 | for (i = 0; i < len; i++) { | |
2328 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); | |
fb8a5ba8 | 2329 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2330 | continue; |
2331 | break; | |
8f70e95f | 2332 | } |
fb8a5ba8 BS |
2333 | /* |
2334 | * -EACCESS could mean that the user doesn't have correct permissions | |
2335 | * to access the mount. It could also mean that we tried to mount | |
2336 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2337 | * existing mount programs don't handle -EACCES very well so it should | |
2338 | * be mapped to -EPERM instead. | |
2339 | */ | |
2340 | if (status == -EACCES) | |
2341 | status = -EPERM; | |
801a16dc BS |
2342 | return status; |
2343 | } | |
2344 | ||
2345 | /* | |
2346 | * get the file handle for the "/" directory on the server | |
2347 | */ | |
2348 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2349 | struct nfs_fsinfo *info) | |
2350 | { | |
fca78d6d | 2351 | int minor_version = server->nfs_client->cl_minorversion; |
801a16dc | 2352 | int status = nfs4_lookup_root(server, fhandle, info); |
fb8a5ba8 BS |
2353 | if ((status == -NFS4ERR_WRONGSEC) && !(server->flags & NFS_MOUNT_SECFLAVOUR)) |
2354 | /* | |
2355 | * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM | |
2356 | * by nfs4_map_errors() as this function exits. | |
2357 | */ | |
fca78d6d | 2358 | status = nfs_v4_minor_ops[minor_version]->find_root_sec(server, fhandle, info); |
1da177e4 LT |
2359 | if (status == 0) |
2360 | status = nfs4_server_capabilities(server, fhandle); | |
2361 | if (status == 0) | |
2362 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2363 | return nfs4_map_errors(status); |
1da177e4 LT |
2364 | } |
2365 | ||
6b97fd3d MN |
2366 | /* |
2367 | * Get locations and (maybe) other attributes of a referral. | |
2368 | * Note that we'll actually follow the referral later when | |
2369 | * we detect fsid mismatch in inode revalidation | |
2370 | */ | |
533eb461 AA |
2371 | static int nfs4_get_referral(struct inode *dir, const struct qstr *name, |
2372 | struct nfs_fattr *fattr, struct nfs_fh *fhandle) | |
6b97fd3d MN |
2373 | { |
2374 | int status = -ENOMEM; | |
2375 | struct page *page = NULL; | |
2376 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2377 | |
2378 | page = alloc_page(GFP_KERNEL); | |
2379 | if (page == NULL) | |
2380 | goto out; | |
2381 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2382 | if (locations == NULL) | |
2383 | goto out; | |
2384 | ||
c228fd3a | 2385 | status = nfs4_proc_fs_locations(dir, name, locations, page); |
6b97fd3d MN |
2386 | if (status != 0) |
2387 | goto out; | |
2388 | /* Make sure server returned a different fsid for the referral */ | |
2389 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2390 | dprintk("%s: server did not return a different fsid for" |
2391 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2392 | status = -EIO; |
2393 | goto out; | |
2394 | } | |
533eb461 AA |
2395 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2396 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2397 | |
533eb461 | 2398 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2399 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2400 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2401 | out: | |
2402 | if (page) | |
2403 | __free_page(page); | |
5d7ca35a | 2404 | kfree(locations); |
6b97fd3d MN |
2405 | return status; |
2406 | } | |
2407 | ||
1da177e4 LT |
2408 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2409 | { | |
2410 | struct nfs4_getattr_arg args = { | |
2411 | .fh = fhandle, | |
2412 | .bitmask = server->attr_bitmask, | |
2413 | }; | |
2414 | struct nfs4_getattr_res res = { | |
2415 | .fattr = fattr, | |
2416 | .server = server, | |
2417 | }; | |
2418 | struct rpc_message msg = { | |
2419 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2420 | .rpc_argp = &args, | |
2421 | .rpc_resp = &res, | |
2422 | }; | |
2423 | ||
0e574af1 | 2424 | nfs_fattr_init(fattr); |
7c513058 | 2425 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2426 | } |
2427 | ||
2428 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2429 | { | |
2430 | struct nfs4_exception exception = { }; | |
2431 | int err; | |
2432 | do { | |
2433 | err = nfs4_handle_exception(server, | |
2434 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2435 | &exception); | |
2436 | } while (exception.retry); | |
2437 | return err; | |
2438 | } | |
2439 | ||
2440 | /* | |
2441 | * The file is not closed if it is opened due to the a request to change | |
2442 | * the size of the file. The open call will not be needed once the | |
2443 | * VFS layer lookup-intents are implemented. | |
2444 | * | |
2445 | * Close is called when the inode is destroyed. | |
2446 | * If we haven't opened the file for O_WRONLY, we | |
2447 | * need to in the size_change case to obtain a stateid. | |
2448 | * | |
2449 | * Got race? | |
2450 | * Because OPEN is always done by name in nfsv4, it is | |
2451 | * possible that we opened a different file by the same | |
2452 | * name. We can recognize this race condition, but we | |
2453 | * can't do anything about it besides returning an error. | |
2454 | * | |
2455 | * This will be fixed with VFS changes (lookup-intent). | |
2456 | */ | |
2457 | static int | |
2458 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2459 | struct iattr *sattr) | |
2460 | { | |
08e9eac4 | 2461 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2462 | struct rpc_cred *cred = NULL; |
d530838b | 2463 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2464 | int status; |
2465 | ||
8a1636c4 BH |
2466 | if (pnfs_ld_layoutret_on_setattr(inode)) |
2467 | pnfs_return_layout(inode); | |
2468 | ||
0e574af1 | 2469 | nfs_fattr_init(fattr); |
1da177e4 | 2470 | |
d530838b | 2471 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2472 | if (sattr->ia_valid & ATTR_FILE) { |
2473 | struct nfs_open_context *ctx; | |
2474 | ||
2475 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2476 | if (ctx) { |
2477 | cred = ctx->cred; | |
2478 | state = ctx->state; | |
2479 | } | |
659bfcd6 | 2480 | } |
08e9eac4 | 2481 | |
536e43d1 TM |
2482 | /* Deal with open(O_TRUNC) */ |
2483 | if (sattr->ia_valid & ATTR_OPEN) | |
2484 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME|ATTR_OPEN); | |
2485 | ||
659bfcd6 | 2486 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2487 | if (status == 0) |
2488 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2489 | return status; |
2490 | } | |
2491 | ||
0c2e53f1 TM |
2492 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
2493 | const struct qstr *name, struct nfs_fh *fhandle, | |
2494 | struct nfs_fattr *fattr) | |
2b3de441 | 2495 | { |
0c2e53f1 | 2496 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
2497 | int status; |
2498 | struct nfs4_lookup_arg args = { | |
2499 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 2500 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
2501 | .name = name, |
2502 | }; | |
2503 | struct nfs4_lookup_res res = { | |
2504 | .server = server, | |
2505 | .fattr = fattr, | |
2506 | .fh = fhandle, | |
2507 | }; | |
2508 | struct rpc_message msg = { | |
2509 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2510 | .rpc_argp = &args, | |
2511 | .rpc_resp = &res, | |
2512 | }; | |
2513 | ||
2514 | nfs_fattr_init(fattr); | |
2515 | ||
1da177e4 | 2516 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 2517 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2518 | dprintk("NFS reply lookup: %d\n", status); |
2519 | return status; | |
2520 | } | |
2521 | ||
7ebb9315 BS |
2522 | void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr, struct nfs_fh *fh) |
2523 | { | |
2524 | memset(fh, 0, sizeof(struct nfs_fh)); | |
2525 | fattr->fsid.major = 1; | |
2526 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
2527 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_FSID | NFS_ATTR_FATTR_MOUNTPOINT; | |
2528 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; | |
2529 | fattr->nlink = 2; | |
2530 | } | |
2531 | ||
7c513058 BS |
2532 | static int nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, struct qstr *name, |
2533 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
1da177e4 LT |
2534 | { |
2535 | struct nfs4_exception exception = { }; | |
2536 | int err; | |
2537 | do { | |
0c2e53f1 TM |
2538 | int status; |
2539 | ||
2540 | status = _nfs4_proc_lookup(clnt, dir, name, fhandle, fattr); | |
2541 | switch (status) { | |
08ef7bd3 TM |
2542 | case -NFS4ERR_BADNAME: |
2543 | return -ENOENT; | |
0c2e53f1 | 2544 | case -NFS4ERR_MOVED: |
a6f498a8 | 2545 | return nfs4_get_referral(dir, name, fattr, fhandle); |
0c2e53f1 | 2546 | case -NFS4ERR_WRONGSEC: |
7ebb9315 | 2547 | nfs_fixup_secinfo_attributes(fattr, fhandle); |
0c2e53f1 TM |
2548 | } |
2549 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2550 | status, &exception); | |
1da177e4 LT |
2551 | } while (exception.retry); |
2552 | return err; | |
2553 | } | |
2554 | ||
2555 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2556 | { | |
76b32999 | 2557 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2558 | struct nfs4_accessargs args = { |
2559 | .fh = NFS_FH(inode), | |
a4980e78 | 2560 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
2561 | }; |
2562 | struct nfs4_accessres res = { | |
2563 | .server = server, | |
1da177e4 | 2564 | }; |
1da177e4 LT |
2565 | struct rpc_message msg = { |
2566 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2567 | .rpc_argp = &args, | |
2568 | .rpc_resp = &res, | |
2569 | .rpc_cred = entry->cred, | |
2570 | }; | |
2571 | int mode = entry->mask; | |
2572 | int status; | |
2573 | ||
2574 | /* | |
2575 | * Determine which access bits we want to ask for... | |
2576 | */ | |
2577 | if (mode & MAY_READ) | |
2578 | args.access |= NFS4_ACCESS_READ; | |
2579 | if (S_ISDIR(inode->i_mode)) { | |
2580 | if (mode & MAY_WRITE) | |
2581 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2582 | if (mode & MAY_EXEC) | |
2583 | args.access |= NFS4_ACCESS_LOOKUP; | |
2584 | } else { | |
2585 | if (mode & MAY_WRITE) | |
2586 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2587 | if (mode & MAY_EXEC) | |
2588 | args.access |= NFS4_ACCESS_EXECUTE; | |
2589 | } | |
c407d41a TM |
2590 | |
2591 | res.fattr = nfs_alloc_fattr(); | |
2592 | if (res.fattr == NULL) | |
2593 | return -ENOMEM; | |
2594 | ||
7c513058 | 2595 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2596 | if (!status) { |
2597 | entry->mask = 0; | |
2598 | if (res.access & NFS4_ACCESS_READ) | |
2599 | entry->mask |= MAY_READ; | |
2600 | if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE)) | |
2601 | entry->mask |= MAY_WRITE; | |
2602 | if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE)) | |
2603 | entry->mask |= MAY_EXEC; | |
c407d41a | 2604 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2605 | } |
c407d41a | 2606 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2607 | return status; |
2608 | } | |
2609 | ||
2610 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2611 | { | |
2612 | struct nfs4_exception exception = { }; | |
2613 | int err; | |
2614 | do { | |
2615 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2616 | _nfs4_proc_access(inode, entry), | |
2617 | &exception); | |
2618 | } while (exception.retry); | |
2619 | return err; | |
2620 | } | |
2621 | ||
2622 | /* | |
2623 | * TODO: For the time being, we don't try to get any attributes | |
2624 | * along with any of the zero-copy operations READ, READDIR, | |
2625 | * READLINK, WRITE. | |
2626 | * | |
2627 | * In the case of the first three, we want to put the GETATTR | |
2628 | * after the read-type operation -- this is because it is hard | |
2629 | * to predict the length of a GETATTR response in v4, and thus | |
2630 | * align the READ data correctly. This means that the GETATTR | |
2631 | * may end up partially falling into the page cache, and we should | |
2632 | * shift it into the 'tail' of the xdr_buf before processing. | |
2633 | * To do this efficiently, we need to know the total length | |
2634 | * of data received, which doesn't seem to be available outside | |
2635 | * of the RPC layer. | |
2636 | * | |
2637 | * In the case of WRITE, we also want to put the GETATTR after | |
2638 | * the operation -- in this case because we want to make sure | |
2639 | * we get the post-operation mtime and size. This means that | |
2640 | * we can't use xdr_encode_pages() as written: we need a variant | |
2641 | * of it which would leave room in the 'tail' iovec. | |
2642 | * | |
2643 | * Both of these changes to the XDR layer would in fact be quite | |
2644 | * minor, but I decided to leave them for a subsequent patch. | |
2645 | */ | |
2646 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2647 | unsigned int pgbase, unsigned int pglen) | |
2648 | { | |
2649 | struct nfs4_readlink args = { | |
2650 | .fh = NFS_FH(inode), | |
2651 | .pgbase = pgbase, | |
2652 | .pglen = pglen, | |
2653 | .pages = &page, | |
2654 | }; | |
f50c7000 | 2655 | struct nfs4_readlink_res res; |
1da177e4 LT |
2656 | struct rpc_message msg = { |
2657 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2658 | .rpc_argp = &args, | |
f50c7000 | 2659 | .rpc_resp = &res, |
1da177e4 LT |
2660 | }; |
2661 | ||
7c513058 | 2662 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2663 | } |
2664 | ||
2665 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2666 | unsigned int pgbase, unsigned int pglen) | |
2667 | { | |
2668 | struct nfs4_exception exception = { }; | |
2669 | int err; | |
2670 | do { | |
2671 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2672 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2673 | &exception); | |
2674 | } while (exception.retry); | |
2675 | return err; | |
2676 | } | |
2677 | ||
1da177e4 LT |
2678 | /* |
2679 | * Got race? | |
2680 | * We will need to arrange for the VFS layer to provide an atomic open. | |
2681 | * Until then, this create/open method is prone to inefficiency and race | |
2682 | * conditions due to the lookup, create, and open VFS calls from sys_open() | |
2683 | * placed on the wire. | |
2684 | * | |
2685 | * Given the above sorry state of affairs, I'm simply sending an OPEN. | |
2686 | * The file will be opened again in the subsequent VFS open call | |
2687 | * (nfs4_proc_file_open). | |
2688 | * | |
2689 | * The open for read will just hang around to be used by any process that | |
2690 | * opens the file O_RDONLY. This will all be resolved with the VFS changes. | |
2691 | */ | |
2692 | ||
2693 | static int | |
2694 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
c0204fd2 | 2695 | int flags, struct nfs_open_context *ctx) |
1da177e4 | 2696 | { |
82a2c1b7 | 2697 | struct dentry *de = dentry; |
1da177e4 | 2698 | struct nfs4_state *state; |
c0204fd2 TM |
2699 | struct rpc_cred *cred = NULL; |
2700 | fmode_t fmode = 0; | |
1da177e4 LT |
2701 | int status = 0; |
2702 | ||
c0204fd2 TM |
2703 | if (ctx != NULL) { |
2704 | cred = ctx->cred; | |
3d4ff43d | 2705 | de = ctx->dentry; |
c0204fd2 | 2706 | fmode = ctx->mode; |
1da177e4 | 2707 | } |
a8a5da99 | 2708 | sattr->ia_mode &= ~current_umask(); |
82a2c1b7 | 2709 | state = nfs4_do_open(dir, de, fmode, flags, sattr, cred); |
d4d9cdcb | 2710 | d_drop(dentry); |
1da177e4 LT |
2711 | if (IS_ERR(state)) { |
2712 | status = PTR_ERR(state); | |
c0204fd2 | 2713 | goto out; |
1da177e4 | 2714 | } |
d4d9cdcb | 2715 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2716 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
c0204fd2 TM |
2717 | if (ctx != NULL) |
2718 | ctx->state = state; | |
02a913a7 | 2719 | else |
643168c2 | 2720 | nfs4_close_sync(state, fmode); |
1da177e4 LT |
2721 | out: |
2722 | return status; | |
2723 | } | |
2724 | ||
2725 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2726 | { | |
16e42959 | 2727 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2728 | struct nfs_removeargs args = { |
1da177e4 | 2729 | .fh = NFS_FH(dir), |
4fdc17b2 TM |
2730 | .name.len = name->len, |
2731 | .name.name = name->name, | |
16e42959 TM |
2732 | .bitmask = server->attr_bitmask, |
2733 | }; | |
4fdc17b2 | 2734 | struct nfs_removeres res = { |
16e42959 | 2735 | .server = server, |
1da177e4 | 2736 | }; |
1da177e4 | 2737 | struct rpc_message msg = { |
4fdc17b2 TM |
2738 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
2739 | .rpc_argp = &args, | |
2740 | .rpc_resp = &res, | |
1da177e4 | 2741 | }; |
d346890b TM |
2742 | int status = -ENOMEM; |
2743 | ||
2744 | res.dir_attr = nfs_alloc_fattr(); | |
2745 | if (res.dir_attr == NULL) | |
2746 | goto out; | |
1da177e4 | 2747 | |
7c513058 | 2748 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
16e42959 TM |
2749 | if (status == 0) { |
2750 | update_changeattr(dir, &res.cinfo); | |
d346890b | 2751 | nfs_post_op_update_inode(dir, res.dir_attr); |
16e42959 | 2752 | } |
d346890b TM |
2753 | nfs_free_fattr(res.dir_attr); |
2754 | out: | |
1da177e4 LT |
2755 | return status; |
2756 | } | |
2757 | ||
2758 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2759 | { | |
2760 | struct nfs4_exception exception = { }; | |
2761 | int err; | |
2762 | do { | |
2763 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2764 | _nfs4_proc_remove(dir, name), | |
2765 | &exception); | |
2766 | } while (exception.retry); | |
2767 | return err; | |
2768 | } | |
2769 | ||
e4eff1a6 | 2770 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 2771 | { |
e4eff1a6 TM |
2772 | struct nfs_server *server = NFS_SERVER(dir); |
2773 | struct nfs_removeargs *args = msg->rpc_argp; | |
2774 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 2775 | |
a65318bf | 2776 | args->bitmask = server->cache_consistency_bitmask; |
e4eff1a6 | 2777 | res->server = server; |
1da177e4 | 2778 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
9d12b216 | 2779 | nfs41_init_sequence(&args->seq_args, &res->seq_res, 1); |
1da177e4 LT |
2780 | } |
2781 | ||
e4eff1a6 | 2782 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 2783 | { |
e4eff1a6 TM |
2784 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
2785 | ||
14516c3a TM |
2786 | if (!nfs4_sequence_done(task, &res->seq_res)) |
2787 | return 0; | |
9e33bed5 | 2788 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
2789 | return 0; |
2790 | update_changeattr(dir, &res->cinfo); | |
d346890b | 2791 | nfs_post_op_update_inode(dir, res->dir_attr); |
e4eff1a6 | 2792 | return 1; |
1da177e4 LT |
2793 | } |
2794 | ||
d3d4152a JL |
2795 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
2796 | { | |
2797 | struct nfs_server *server = NFS_SERVER(dir); | |
2798 | struct nfs_renameargs *arg = msg->rpc_argp; | |
2799 | struct nfs_renameres *res = msg->rpc_resp; | |
2800 | ||
2801 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
2802 | arg->bitmask = server->attr_bitmask; | |
2803 | res->server = server; | |
9d12b216 | 2804 | nfs41_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
2805 | } |
2806 | ||
2807 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
2808 | struct inode *new_dir) | |
2809 | { | |
2810 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
2811 | ||
2812 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
2813 | return 0; | |
2814 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
2815 | return 0; | |
2816 | ||
2817 | update_changeattr(old_dir, &res->old_cinfo); | |
2818 | nfs_post_op_update_inode(old_dir, res->old_fattr); | |
2819 | update_changeattr(new_dir, &res->new_cinfo); | |
2820 | nfs_post_op_update_inode(new_dir, res->new_fattr); | |
2821 | return 1; | |
2822 | } | |
2823 | ||
1da177e4 LT |
2824 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
2825 | struct inode *new_dir, struct qstr *new_name) | |
2826 | { | |
6caf2c82 | 2827 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 2828 | struct nfs_renameargs arg = { |
1da177e4 LT |
2829 | .old_dir = NFS_FH(old_dir), |
2830 | .new_dir = NFS_FH(new_dir), | |
2831 | .old_name = old_name, | |
2832 | .new_name = new_name, | |
6caf2c82 TM |
2833 | .bitmask = server->attr_bitmask, |
2834 | }; | |
e8582a8b | 2835 | struct nfs_renameres res = { |
6caf2c82 | 2836 | .server = server, |
1da177e4 | 2837 | }; |
1da177e4 LT |
2838 | struct rpc_message msg = { |
2839 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
2840 | .rpc_argp = &arg, | |
2841 | .rpc_resp = &res, | |
2842 | }; | |
011fff72 | 2843 | int status = -ENOMEM; |
1da177e4 | 2844 | |
011fff72 TM |
2845 | res.old_fattr = nfs_alloc_fattr(); |
2846 | res.new_fattr = nfs_alloc_fattr(); | |
2847 | if (res.old_fattr == NULL || res.new_fattr == NULL) | |
2848 | goto out; | |
1da177e4 | 2849 | |
7c513058 | 2850 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
2851 | if (!status) { |
2852 | update_changeattr(old_dir, &res.old_cinfo); | |
6caf2c82 | 2853 | nfs_post_op_update_inode(old_dir, res.old_fattr); |
1da177e4 | 2854 | update_changeattr(new_dir, &res.new_cinfo); |
6caf2c82 | 2855 | nfs_post_op_update_inode(new_dir, res.new_fattr); |
1da177e4 | 2856 | } |
011fff72 TM |
2857 | out: |
2858 | nfs_free_fattr(res.new_fattr); | |
2859 | nfs_free_fattr(res.old_fattr); | |
1da177e4 LT |
2860 | return status; |
2861 | } | |
2862 | ||
2863 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2864 | struct inode *new_dir, struct qstr *new_name) | |
2865 | { | |
2866 | struct nfs4_exception exception = { }; | |
2867 | int err; | |
2868 | do { | |
2869 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
2870 | _nfs4_proc_rename(old_dir, old_name, | |
2871 | new_dir, new_name), | |
2872 | &exception); | |
2873 | } while (exception.retry); | |
2874 | return err; | |
2875 | } | |
2876 | ||
2877 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2878 | { | |
91ba2eee | 2879 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2880 | struct nfs4_link_arg arg = { |
2881 | .fh = NFS_FH(inode), | |
2882 | .dir_fh = NFS_FH(dir), | |
2883 | .name = name, | |
91ba2eee TM |
2884 | .bitmask = server->attr_bitmask, |
2885 | }; | |
91ba2eee TM |
2886 | struct nfs4_link_res res = { |
2887 | .server = server, | |
1da177e4 | 2888 | }; |
1da177e4 LT |
2889 | struct rpc_message msg = { |
2890 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
2891 | .rpc_argp = &arg, | |
91ba2eee | 2892 | .rpc_resp = &res, |
1da177e4 | 2893 | }; |
136f2627 TM |
2894 | int status = -ENOMEM; |
2895 | ||
2896 | res.fattr = nfs_alloc_fattr(); | |
2897 | res.dir_attr = nfs_alloc_fattr(); | |
2898 | if (res.fattr == NULL || res.dir_attr == NULL) | |
2899 | goto out; | |
1da177e4 | 2900 | |
7c513058 | 2901 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
2902 | if (!status) { |
2903 | update_changeattr(dir, &res.cinfo); | |
2904 | nfs_post_op_update_inode(dir, res.dir_attr); | |
73a3d07c | 2905 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 2906 | } |
136f2627 TM |
2907 | out: |
2908 | nfs_free_fattr(res.dir_attr); | |
2909 | nfs_free_fattr(res.fattr); | |
1da177e4 LT |
2910 | return status; |
2911 | } | |
2912 | ||
2913 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2914 | { | |
2915 | struct nfs4_exception exception = { }; | |
2916 | int err; | |
2917 | do { | |
2918 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2919 | _nfs4_proc_link(inode, dir, name), | |
2920 | &exception); | |
2921 | } while (exception.retry); | |
2922 | return err; | |
2923 | } | |
2924 | ||
57dc9a57 TM |
2925 | struct nfs4_createdata { |
2926 | struct rpc_message msg; | |
2927 | struct nfs4_create_arg arg; | |
2928 | struct nfs4_create_res res; | |
2929 | struct nfs_fh fh; | |
2930 | struct nfs_fattr fattr; | |
2931 | struct nfs_fattr dir_fattr; | |
2932 | }; | |
2933 | ||
2934 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
2935 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
2936 | { | |
2937 | struct nfs4_createdata *data; | |
2938 | ||
2939 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
2940 | if (data != NULL) { | |
2941 | struct nfs_server *server = NFS_SERVER(dir); | |
2942 | ||
2943 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
2944 | data->msg.rpc_argp = &data->arg; | |
2945 | data->msg.rpc_resp = &data->res; | |
2946 | data->arg.dir_fh = NFS_FH(dir); | |
2947 | data->arg.server = server; | |
2948 | data->arg.name = name; | |
2949 | data->arg.attrs = sattr; | |
2950 | data->arg.ftype = ftype; | |
2951 | data->arg.bitmask = server->attr_bitmask; | |
2952 | data->res.server = server; | |
2953 | data->res.fh = &data->fh; | |
2954 | data->res.fattr = &data->fattr; | |
2955 | data->res.dir_fattr = &data->dir_fattr; | |
2956 | nfs_fattr_init(data->res.fattr); | |
2957 | nfs_fattr_init(data->res.dir_fattr); | |
2958 | } | |
2959 | return data; | |
2960 | } | |
2961 | ||
2962 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
2963 | { | |
7c513058 | 2964 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 2965 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
2966 | if (status == 0) { |
2967 | update_changeattr(dir, &data->res.dir_cinfo); | |
2968 | nfs_post_op_update_inode(dir, data->res.dir_fattr); | |
2969 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); | |
2970 | } | |
2971 | return status; | |
2972 | } | |
2973 | ||
2974 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
2975 | { | |
2976 | kfree(data); | |
2977 | } | |
2978 | ||
4f390c15 | 2979 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2980 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 2981 | { |
57dc9a57 TM |
2982 | struct nfs4_createdata *data; |
2983 | int status = -ENAMETOOLONG; | |
1da177e4 | 2984 | |
94a6d753 | 2985 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 2986 | goto out; |
4f390c15 | 2987 | |
57dc9a57 TM |
2988 | status = -ENOMEM; |
2989 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
2990 | if (data == NULL) | |
2991 | goto out; | |
2992 | ||
2993 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
2994 | data->arg.u.symlink.pages = &page; | |
2995 | data->arg.u.symlink.len = len; | |
1da177e4 | 2996 | |
57dc9a57 TM |
2997 | status = nfs4_do_create(dir, dentry, data); |
2998 | ||
2999 | nfs4_free_createdata(data); | |
3000 | out: | |
1da177e4 LT |
3001 | return status; |
3002 | } | |
3003 | ||
4f390c15 | 3004 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3005 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
3006 | { |
3007 | struct nfs4_exception exception = { }; | |
3008 | int err; | |
3009 | do { | |
3010 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
3011 | _nfs4_proc_symlink(dir, dentry, page, |
3012 | len, sattr), | |
1da177e4 LT |
3013 | &exception); |
3014 | } while (exception.retry); | |
3015 | return err; | |
3016 | } | |
3017 | ||
3018 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3019 | struct iattr *sattr) | |
3020 | { | |
57dc9a57 TM |
3021 | struct nfs4_createdata *data; |
3022 | int status = -ENOMEM; | |
1da177e4 | 3023 | |
57dc9a57 TM |
3024 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3025 | if (data == NULL) | |
3026 | goto out; | |
3027 | ||
3028 | status = nfs4_do_create(dir, dentry, data); | |
3029 | ||
3030 | nfs4_free_createdata(data); | |
3031 | out: | |
1da177e4 LT |
3032 | return status; |
3033 | } | |
3034 | ||
3035 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3036 | struct iattr *sattr) | |
3037 | { | |
3038 | struct nfs4_exception exception = { }; | |
3039 | int err; | |
a8a5da99 AK |
3040 | |
3041 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3042 | do { |
3043 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3044 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
3045 | &exception); | |
3046 | } while (exception.retry); | |
3047 | return err; | |
3048 | } | |
3049 | ||
3050 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3051 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3052 | { |
3053 | struct inode *dir = dentry->d_inode; | |
3054 | struct nfs4_readdir_arg args = { | |
3055 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3056 | .pages = pages, |
1da177e4 LT |
3057 | .pgbase = 0, |
3058 | .count = count, | |
96d25e53 | 3059 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3060 | .plus = plus, |
1da177e4 LT |
3061 | }; |
3062 | struct nfs4_readdir_res res; | |
3063 | struct rpc_message msg = { | |
3064 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3065 | .rpc_argp = &args, | |
3066 | .rpc_resp = &res, | |
3067 | .rpc_cred = cred, | |
3068 | }; | |
3069 | int status; | |
3070 | ||
3110ff80 | 3071 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
3072 | dentry->d_parent->d_name.name, |
3073 | dentry->d_name.name, | |
3074 | (unsigned long long)cookie); | |
1da177e4 LT |
3075 | nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args); |
3076 | res.pgbase = args.pgbase; | |
7c513058 | 3077 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3078 | if (status >= 0) { |
1da177e4 | 3079 | memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3080 | status += args.pgbase; |
3081 | } | |
c4812998 TM |
3082 | |
3083 | nfs_invalidate_atime(dir); | |
3084 | ||
3110ff80 | 3085 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3086 | return status; |
3087 | } | |
3088 | ||
3089 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3090 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3091 | { |
3092 | struct nfs4_exception exception = { }; | |
3093 | int err; | |
3094 | do { | |
3095 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
3096 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 3097 | pages, count, plus), |
1da177e4 LT |
3098 | &exception); |
3099 | } while (exception.retry); | |
3100 | return err; | |
3101 | } | |
3102 | ||
3103 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3104 | struct iattr *sattr, dev_t rdev) | |
3105 | { | |
57dc9a57 TM |
3106 | struct nfs4_createdata *data; |
3107 | int mode = sattr->ia_mode; | |
3108 | int status = -ENOMEM; | |
1da177e4 LT |
3109 | |
3110 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
3111 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
57dc9a57 TM |
3112 | |
3113 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); | |
3114 | if (data == NULL) | |
3115 | goto out; | |
3116 | ||
1da177e4 | 3117 | if (S_ISFIFO(mode)) |
57dc9a57 | 3118 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3119 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3120 | data->arg.ftype = NF4BLK; |
3121 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3122 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3123 | } |
3124 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3125 | data->arg.ftype = NF4CHR; |
3126 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3127 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 | 3128 | } |
1da177e4 | 3129 | |
57dc9a57 TM |
3130 | status = nfs4_do_create(dir, dentry, data); |
3131 | ||
3132 | nfs4_free_createdata(data); | |
3133 | out: | |
1da177e4 LT |
3134 | return status; |
3135 | } | |
3136 | ||
3137 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3138 | struct iattr *sattr, dev_t rdev) | |
3139 | { | |
3140 | struct nfs4_exception exception = { }; | |
3141 | int err; | |
a8a5da99 AK |
3142 | |
3143 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3144 | do { |
3145 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3146 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
3147 | &exception); | |
3148 | } while (exception.retry); | |
3149 | return err; | |
3150 | } | |
3151 | ||
3152 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3153 | struct nfs_fsstat *fsstat) | |
3154 | { | |
3155 | struct nfs4_statfs_arg args = { | |
3156 | .fh = fhandle, | |
3157 | .bitmask = server->attr_bitmask, | |
3158 | }; | |
24ad148a BH |
3159 | struct nfs4_statfs_res res = { |
3160 | .fsstat = fsstat, | |
3161 | }; | |
1da177e4 LT |
3162 | struct rpc_message msg = { |
3163 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3164 | .rpc_argp = &args, | |
24ad148a | 3165 | .rpc_resp = &res, |
1da177e4 LT |
3166 | }; |
3167 | ||
0e574af1 | 3168 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3169 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3170 | } |
3171 | ||
3172 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3173 | { | |
3174 | struct nfs4_exception exception = { }; | |
3175 | int err; | |
3176 | do { | |
3177 | err = nfs4_handle_exception(server, | |
3178 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3179 | &exception); | |
3180 | } while (exception.retry); | |
3181 | return err; | |
3182 | } | |
3183 | ||
3184 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3185 | struct nfs_fsinfo *fsinfo) | |
3186 | { | |
3187 | struct nfs4_fsinfo_arg args = { | |
3188 | .fh = fhandle, | |
3189 | .bitmask = server->attr_bitmask, | |
3190 | }; | |
3dda5e43 BH |
3191 | struct nfs4_fsinfo_res res = { |
3192 | .fsinfo = fsinfo, | |
3193 | }; | |
1da177e4 LT |
3194 | struct rpc_message msg = { |
3195 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3196 | .rpc_argp = &args, | |
3dda5e43 | 3197 | .rpc_resp = &res, |
1da177e4 LT |
3198 | }; |
3199 | ||
7c513058 | 3200 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3201 | } |
3202 | ||
3203 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3204 | { | |
3205 | struct nfs4_exception exception = { }; | |
3206 | int err; | |
3207 | ||
3208 | do { | |
3209 | err = nfs4_handle_exception(server, | |
3210 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
3211 | &exception); | |
3212 | } while (exception.retry); | |
3213 | return err; | |
3214 | } | |
3215 | ||
3216 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3217 | { | |
0e574af1 | 3218 | nfs_fattr_init(fsinfo->fattr); |
1da177e4 LT |
3219 | return nfs4_do_fsinfo(server, fhandle, fsinfo); |
3220 | } | |
3221 | ||
3222 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3223 | struct nfs_pathconf *pathconf) | |
3224 | { | |
3225 | struct nfs4_pathconf_arg args = { | |
3226 | .fh = fhandle, | |
3227 | .bitmask = server->attr_bitmask, | |
3228 | }; | |
d45b2989 BH |
3229 | struct nfs4_pathconf_res res = { |
3230 | .pathconf = pathconf, | |
3231 | }; | |
1da177e4 LT |
3232 | struct rpc_message msg = { |
3233 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3234 | .rpc_argp = &args, | |
d45b2989 | 3235 | .rpc_resp = &res, |
1da177e4 LT |
3236 | }; |
3237 | ||
3238 | /* None of the pathconf attributes are mandatory to implement */ | |
3239 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3240 | memset(pathconf, 0, sizeof(*pathconf)); | |
3241 | return 0; | |
3242 | } | |
3243 | ||
0e574af1 | 3244 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3245 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3246 | } |
3247 | ||
3248 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3249 | struct nfs_pathconf *pathconf) | |
3250 | { | |
3251 | struct nfs4_exception exception = { }; | |
3252 | int err; | |
3253 | ||
3254 | do { | |
3255 | err = nfs4_handle_exception(server, | |
3256 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3257 | &exception); | |
3258 | } while (exception.retry); | |
3259 | return err; | |
3260 | } | |
3261 | ||
d20581aa BH |
3262 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3263 | { | |
3264 | nfs_invalidate_atime(data->inode); | |
3265 | } | |
3266 | ||
cbdabc7f | 3267 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3268 | { |
ec06c096 | 3269 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 3270 | |
9e33bed5 | 3271 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3272 | rpc_restart_call_prepare(task); |
ec06c096 | 3273 | return -EAGAIN; |
1da177e4 | 3274 | } |
8850df99 | 3275 | |
d20581aa | 3276 | __nfs4_read_done_cb(data); |
1da177e4 | 3277 | if (task->tk_status > 0) |
ec06c096 TM |
3278 | renew_lease(server, data->timestamp); |
3279 | return 0; | |
1da177e4 LT |
3280 | } |
3281 | ||
cbdabc7f AA |
3282 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3283 | { | |
3284 | ||
3285 | dprintk("--> %s\n", __func__); | |
3286 | ||
3287 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3288 | return -EAGAIN; | |
3289 | ||
d20581aa BH |
3290 | return data->read_done_cb ? data->read_done_cb(task, data) : |
3291 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
3292 | } |
3293 | ||
bdc7f021 | 3294 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3295 | { |
1da177e4 | 3296 | data->timestamp = jiffies; |
cbdabc7f | 3297 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3298 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
9d12b216 | 3299 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
1da177e4 LT |
3300 | } |
3301 | ||
cbdabc7f AA |
3302 | /* Reset the the nfs_read_data to send the read to the MDS. */ |
3303 | void nfs4_reset_read(struct rpc_task *task, struct nfs_read_data *data) | |
3304 | { | |
3305 | dprintk("%s Reset task for i/o through\n", __func__); | |
3306 | put_lseg(data->lseg); | |
3307 | data->lseg = NULL; | |
3308 | /* offsets will differ in the dense stripe case */ | |
3309 | data->args.offset = data->mds_offset; | |
3310 | data->ds_clp = NULL; | |
3311 | data->args.fh = NFS_FH(data->inode); | |
3312 | data->read_done_cb = nfs4_read_done_cb; | |
3313 | task->tk_ops = data->mds_ops; | |
3314 | rpc_task_reset_client(task, NFS_CLIENT(data->inode)); | |
3315 | } | |
3316 | EXPORT_SYMBOL_GPL(nfs4_reset_read); | |
3317 | ||
b029bc9b | 3318 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3319 | { |
1da177e4 LT |
3320 | struct inode *inode = data->inode; |
3321 | ||
9e33bed5 | 3322 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3323 | rpc_restart_call_prepare(task); |
788e7a89 | 3324 | return -EAGAIN; |
1da177e4 | 3325 | } |
4f9838c7 | 3326 | if (task->tk_status >= 0) { |
1da177e4 | 3327 | renew_lease(NFS_SERVER(inode), data->timestamp); |
70ca8852 | 3328 | nfs_post_op_update_inode_force_wcc(inode, data->res.fattr); |
4f9838c7 | 3329 | } |
788e7a89 | 3330 | return 0; |
1da177e4 LT |
3331 | } |
3332 | ||
b029bc9b FI |
3333 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3334 | { | |
3335 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3336 | return -EAGAIN; | |
d20581aa BH |
3337 | return data->write_done_cb ? data->write_done_cb(task, data) : |
3338 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
3339 | } |
3340 | ||
a69aef14 FI |
3341 | /* Reset the the nfs_write_data to send the write to the MDS. */ |
3342 | void nfs4_reset_write(struct rpc_task *task, struct nfs_write_data *data) | |
3343 | { | |
3344 | dprintk("%s Reset task for i/o through\n", __func__); | |
3345 | put_lseg(data->lseg); | |
3346 | data->lseg = NULL; | |
3347 | data->ds_clp = NULL; | |
3348 | data->write_done_cb = nfs4_write_done_cb; | |
3349 | data->args.fh = NFS_FH(data->inode); | |
3350 | data->args.bitmask = data->res.server->cache_consistency_bitmask; | |
3351 | data->args.offset = data->mds_offset; | |
3352 | data->res.fattr = &data->fattr; | |
3353 | task->tk_ops = data->mds_ops; | |
3354 | rpc_task_reset_client(task, NFS_CLIENT(data->inode)); | |
3355 | } | |
3356 | EXPORT_SYMBOL_GPL(nfs4_reset_write); | |
3357 | ||
bdc7f021 | 3358 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3359 | { |
bdc7f021 TM |
3360 | struct nfs_server *server = NFS_SERVER(data->inode); |
3361 | ||
7ffd1064 FI |
3362 | if (data->lseg) { |
3363 | data->args.bitmask = NULL; | |
3364 | data->res.fattr = NULL; | |
3365 | } else | |
3366 | data->args.bitmask = server->cache_consistency_bitmask; | |
b029bc9b FI |
3367 | if (!data->write_done_cb) |
3368 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3369 | data->res.server = server; |
1da177e4 LT |
3370 | data->timestamp = jiffies; |
3371 | ||
bdc7f021 | 3372 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
9d12b216 | 3373 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3374 | } |
3375 | ||
5f452431 | 3376 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3377 | { |
1da177e4 | 3378 | struct inode *inode = data->inode; |
14516c3a | 3379 | |
9e33bed5 | 3380 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
d00c5d43 | 3381 | rpc_restart_call_prepare(task); |
788e7a89 | 3382 | return -EAGAIN; |
1da177e4 | 3383 | } |
9e08a3c5 | 3384 | nfs_refresh_inode(inode, data->res.fattr); |
788e7a89 | 3385 | return 0; |
1da177e4 LT |
3386 | } |
3387 | ||
5f452431 FI |
3388 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data) |
3389 | { | |
3390 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3391 | return -EAGAIN; | |
3392 | return data->write_done_cb(task, data); | |
3393 | } | |
3394 | ||
bdc7f021 | 3395 | static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3396 | { |
788e7a89 | 3397 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce FI |
3398 | |
3399 | if (data->lseg) { | |
3400 | data->args.bitmask = NULL; | |
3401 | data->res.fattr = NULL; | |
3402 | } else | |
3403 | data->args.bitmask = server->cache_consistency_bitmask; | |
5f452431 FI |
3404 | if (!data->write_done_cb) |
3405 | data->write_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 3406 | data->res.server = server; |
bdc7f021 | 3407 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
9d12b216 | 3408 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3409 | } |
3410 | ||
9bc4e3ca CL |
3411 | struct nfs4_renewdata { |
3412 | struct nfs_client *client; | |
3413 | unsigned long timestamp; | |
3414 | }; | |
3415 | ||
1da177e4 LT |
3416 | /* |
3417 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3418 | * standalone procedure for queueing an asynchronous RENEW. | |
3419 | */ | |
9bc4e3ca | 3420 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3421 | { |
9bc4e3ca CL |
3422 | struct nfs4_renewdata *data = calldata; |
3423 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3424 | |
0851de06 AB |
3425 | if (atomic_read(&clp->cl_count) > 1) |
3426 | nfs4_schedule_state_renewal(clp); | |
3427 | nfs_put_client(clp); | |
9bc4e3ca | 3428 | kfree(data); |
dc96aef9 AB |
3429 | } |
3430 | ||
9bc4e3ca | 3431 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3432 | { |
9bc4e3ca CL |
3433 | struct nfs4_renewdata *data = calldata; |
3434 | struct nfs_client *clp = data->client; | |
3435 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3436 | |
3437 | if (task->tk_status < 0) { | |
95baa25c | 3438 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
3439 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
3440 | return; | |
3441 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 3442 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
3443 | return; |
3444 | } | |
3445 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 3446 | } |
452e9352 | 3447 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3448 | } |
3449 | ||
963d8fe5 TM |
3450 | static const struct rpc_call_ops nfs4_renew_ops = { |
3451 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3452 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3453 | }; |
3454 | ||
2f60ea6b | 3455 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
3456 | { |
3457 | struct rpc_message msg = { | |
3458 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3459 | .rpc_argp = clp, | |
b4454fe1 | 3460 | .rpc_cred = cred, |
1da177e4 | 3461 | }; |
9bc4e3ca | 3462 | struct nfs4_renewdata *data; |
1da177e4 | 3463 | |
2f60ea6b TM |
3464 | if (renew_flags == 0) |
3465 | return 0; | |
0851de06 AB |
3466 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3467 | return -EIO; | |
b569ad34 | 3468 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
3469 | if (data == NULL) |
3470 | return -ENOMEM; | |
3471 | data->client = clp; | |
3472 | data->timestamp = jiffies; | |
1da177e4 | 3473 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, |
9bc4e3ca | 3474 | &nfs4_renew_ops, data); |
1da177e4 LT |
3475 | } |
3476 | ||
8534d4ec | 3477 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3478 | { |
3479 | struct rpc_message msg = { | |
3480 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3481 | .rpc_argp = clp, | |
b4454fe1 | 3482 | .rpc_cred = cred, |
1da177e4 LT |
3483 | }; |
3484 | unsigned long now = jiffies; | |
3485 | int status; | |
3486 | ||
3487 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3488 | if (status < 0) | |
3489 | return status; | |
452e9352 | 3490 | do_renew_lease(clp, now); |
1da177e4 LT |
3491 | return 0; |
3492 | } | |
3493 | ||
aa1870af BF |
3494 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3495 | { | |
3496 | return (server->caps & NFS_CAP_ACLS) | |
3497 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3498 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3499 | } | |
3500 | ||
3501 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that | |
3502 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on | |
3503 | * the stack. | |
3504 | */ | |
3505 | #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT) | |
3506 | ||
e9e3d724 NH |
3507 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
3508 | struct page **pages, unsigned int *pgbase) | |
3509 | { | |
3510 | struct page *newpage, **spages; | |
3511 | int rc = 0; | |
3512 | size_t len; | |
3513 | spages = pages; | |
3514 | ||
3515 | do { | |
43b7c3f0 | 3516 | len = min_t(size_t, PAGE_CACHE_SIZE, buflen); |
e9e3d724 NH |
3517 | newpage = alloc_page(GFP_KERNEL); |
3518 | ||
3519 | if (newpage == NULL) | |
3520 | goto unwind; | |
3521 | memcpy(page_address(newpage), buf, len); | |
3522 | buf += len; | |
3523 | buflen -= len; | |
3524 | *pages++ = newpage; | |
3525 | rc++; | |
3526 | } while (buflen != 0); | |
3527 | ||
3528 | return rc; | |
3529 | ||
3530 | unwind: | |
3531 | for(; rc > 0; rc--) | |
3532 | __free_page(spages[rc-1]); | |
3533 | return -ENOMEM; | |
3534 | } | |
3535 | ||
e50a1c2e BF |
3536 | struct nfs4_cached_acl { |
3537 | int cached; | |
3538 | size_t len; | |
3e9d4154 | 3539 | char data[0]; |
e50a1c2e BF |
3540 | }; |
3541 | ||
3542 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3543 | { | |
3544 | struct nfs_inode *nfsi = NFS_I(inode); | |
3545 | ||
3546 | spin_lock(&inode->i_lock); | |
3547 | kfree(nfsi->nfs4_acl); | |
3548 | nfsi->nfs4_acl = acl; | |
3549 | spin_unlock(&inode->i_lock); | |
3550 | } | |
3551 | ||
3552 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3553 | { | |
3554 | nfs4_set_cached_acl(inode, NULL); | |
3555 | } | |
3556 | ||
3557 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3558 | { | |
3559 | struct nfs_inode *nfsi = NFS_I(inode); | |
3560 | struct nfs4_cached_acl *acl; | |
3561 | int ret = -ENOENT; | |
3562 | ||
3563 | spin_lock(&inode->i_lock); | |
3564 | acl = nfsi->nfs4_acl; | |
3565 | if (acl == NULL) | |
3566 | goto out; | |
3567 | if (buf == NULL) /* user is just asking for length */ | |
3568 | goto out_len; | |
3569 | if (acl->cached == 0) | |
3570 | goto out; | |
3571 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3572 | if (acl->len > buflen) | |
3573 | goto out; | |
3574 | memcpy(buf, acl->data, acl->len); | |
3575 | out_len: | |
3576 | ret = acl->len; | |
3577 | out: | |
3578 | spin_unlock(&inode->i_lock); | |
3579 | return ret; | |
3580 | } | |
3581 | ||
3582 | static void nfs4_write_cached_acl(struct inode *inode, const char *buf, size_t acl_len) | |
3583 | { | |
3584 | struct nfs4_cached_acl *acl; | |
3585 | ||
3586 | if (buf && acl_len <= PAGE_SIZE) { | |
3587 | acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL); | |
3588 | if (acl == NULL) | |
3589 | goto out; | |
3590 | acl->cached = 1; | |
3591 | memcpy(acl->data, buf, acl_len); | |
3592 | } else { | |
3593 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3594 | if (acl == NULL) | |
3595 | goto out; | |
3596 | acl->cached = 0; | |
3597 | } | |
3598 | acl->len = acl_len; | |
3599 | out: | |
3600 | nfs4_set_cached_acl(inode, acl); | |
3601 | } | |
3602 | ||
bf118a34 AA |
3603 | /* |
3604 | * The getxattr API returns the required buffer length when called with a | |
3605 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
3606 | * the required buf. On a NULL buf, we send a page of data to the server | |
3607 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
3608 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
3609 | * the cache. If not so, we throw away the page, and cache the required | |
3610 | * length. The next getxattr call will then produce another round trip to | |
3611 | * the server, this time with the input buf of the required size. | |
3612 | */ | |
16b4289c | 3613 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3614 | { |
bf118a34 | 3615 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
3616 | struct nfs_getaclargs args = { |
3617 | .fh = NFS_FH(inode), | |
3618 | .acl_pages = pages, | |
3619 | .acl_len = buflen, | |
3620 | }; | |
663c79b3 BH |
3621 | struct nfs_getaclres res = { |
3622 | .acl_len = buflen, | |
3623 | }; | |
e50a1c2e | 3624 | void *resp_buf; |
aa1870af BF |
3625 | struct rpc_message msg = { |
3626 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3627 | .rpc_argp = &args, | |
663c79b3 | 3628 | .rpc_resp = &res, |
aa1870af | 3629 | }; |
bf118a34 | 3630 | int ret = -ENOMEM, npages, i, acl_len = 0; |
aa1870af | 3631 | |
bf118a34 AA |
3632 | npages = (buflen + PAGE_SIZE - 1) >> PAGE_SHIFT; |
3633 | /* As long as we're doing a round trip to the server anyway, | |
3634 | * let's be prepared for a page of acl data. */ | |
3635 | if (npages == 0) | |
3636 | npages = 1; | |
3637 | ||
3638 | for (i = 0; i < npages; i++) { | |
3639 | pages[i] = alloc_page(GFP_KERNEL); | |
3640 | if (!pages[i]) | |
3641 | goto out_free; | |
e50a1c2e | 3642 | } |
bf118a34 AA |
3643 | if (npages > 1) { |
3644 | /* for decoding across pages */ | |
331818f1 TM |
3645 | res.acl_scratch = alloc_page(GFP_KERNEL); |
3646 | if (!res.acl_scratch) | |
bf118a34 | 3647 | goto out_free; |
e50a1c2e | 3648 | } |
bf118a34 AA |
3649 | args.acl_len = npages * PAGE_SIZE; |
3650 | args.acl_pgbase = 0; | |
3651 | /* Let decode_getfacl know not to fail if the ACL data is larger than | |
3652 | * the page we send as a guess */ | |
3653 | if (buf == NULL) | |
3654 | res.acl_flags |= NFS4_ACL_LEN_REQUEST; | |
3655 | resp_buf = page_address(pages[0]); | |
3656 | ||
de040bec | 3657 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
3658 | __func__, buf, buflen, npages, args.acl_len); |
3659 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
3660 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
3661 | if (ret) |
3662 | goto out_free; | |
bf118a34 AA |
3663 | |
3664 | acl_len = res.acl_len - res.acl_data_offset; | |
3665 | if (acl_len > args.acl_len) | |
3666 | nfs4_write_cached_acl(inode, NULL, acl_len); | |
e50a1c2e | 3667 | else |
bf118a34 AA |
3668 | nfs4_write_cached_acl(inode, resp_buf + res.acl_data_offset, |
3669 | acl_len); | |
e50a1c2e BF |
3670 | if (buf) { |
3671 | ret = -ERANGE; | |
bf118a34 | 3672 | if (acl_len > buflen) |
e50a1c2e | 3673 | goto out_free; |
bf118a34 AA |
3674 | _copy_from_pages(buf, pages, res.acl_data_offset, |
3675 | res.acl_len); | |
e50a1c2e | 3676 | } |
bf118a34 | 3677 | ret = acl_len; |
e50a1c2e | 3678 | out_free: |
bf118a34 AA |
3679 | for (i = 0; i < npages; i++) |
3680 | if (pages[i]) | |
3681 | __free_page(pages[i]); | |
331818f1 TM |
3682 | if (res.acl_scratch) |
3683 | __free_page(res.acl_scratch); | |
aa1870af BF |
3684 | return ret; |
3685 | } | |
3686 | ||
16b4289c TM |
3687 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
3688 | { | |
3689 | struct nfs4_exception exception = { }; | |
3690 | ssize_t ret; | |
3691 | do { | |
3692 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
3693 | if (ret >= 0) | |
3694 | break; | |
3695 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
3696 | } while (exception.retry); | |
3697 | return ret; | |
3698 | } | |
3699 | ||
e50a1c2e BF |
3700 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
3701 | { | |
3702 | struct nfs_server *server = NFS_SERVER(inode); | |
3703 | int ret; | |
3704 | ||
3705 | if (!nfs4_server_supports_acls(server)) | |
3706 | return -EOPNOTSUPP; | |
3707 | ret = nfs_revalidate_inode(server, inode); | |
3708 | if (ret < 0) | |
3709 | return ret; | |
08a22b39 AK |
3710 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
3711 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
3712 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
3713 | if (ret != -ENOENT) | |
bf118a34 AA |
3714 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
3715 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
3716 | return ret; |
3717 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
3718 | } | |
3719 | ||
16b4289c | 3720 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
3721 | { |
3722 | struct nfs_server *server = NFS_SERVER(inode); | |
3723 | struct page *pages[NFS4ACL_MAXPAGES]; | |
3724 | struct nfs_setaclargs arg = { | |
3725 | .fh = NFS_FH(inode), | |
3726 | .acl_pages = pages, | |
3727 | .acl_len = buflen, | |
3728 | }; | |
73c403a9 | 3729 | struct nfs_setaclres res; |
4b580ee3 BF |
3730 | struct rpc_message msg = { |
3731 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
3732 | .rpc_argp = &arg, | |
73c403a9 | 3733 | .rpc_resp = &res, |
4b580ee3 | 3734 | }; |
e9e3d724 | 3735 | int ret, i; |
4b580ee3 BF |
3736 | |
3737 | if (!nfs4_server_supports_acls(server)) | |
3738 | return -EOPNOTSUPP; | |
e9e3d724 NH |
3739 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
3740 | if (i < 0) | |
3741 | return i; | |
642ac549 | 3742 | nfs_inode_return_delegation(inode); |
7c513058 | 3743 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
3744 | |
3745 | /* | |
3746 | * Free each page after tx, so the only ref left is | |
3747 | * held by the network stack | |
3748 | */ | |
3749 | for (; i > 0; i--) | |
3750 | put_page(pages[i-1]); | |
3751 | ||
08a22b39 AK |
3752 | /* |
3753 | * Acl update can result in inode attribute update. | |
3754 | * so mark the attribute cache invalid. | |
3755 | */ | |
3756 | spin_lock(&inode->i_lock); | |
3757 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
3758 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
3759 | nfs_access_zap_cache(inode); |
3760 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
3761 | return ret; |
3762 | } | |
3763 | ||
16b4289c TM |
3764 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
3765 | { | |
3766 | struct nfs4_exception exception = { }; | |
3767 | int err; | |
3768 | do { | |
3769 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3770 | __nfs4_proc_set_acl(inode, buf, buflen), | |
3771 | &exception); | |
3772 | } while (exception.retry); | |
3773 | return err; | |
3774 | } | |
3775 | ||
1da177e4 | 3776 | static int |
aa5190d0 | 3777 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 3778 | { |
aa5190d0 TM |
3779 | struct nfs_client *clp = server->nfs_client; |
3780 | ||
3781 | if (task->tk_status >= 0) | |
1da177e4 LT |
3782 | return 0; |
3783 | switch(task->tk_status) { | |
a1d0b5ee | 3784 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
3785 | case -NFS4ERR_ADMIN_REVOKED: |
3786 | case -NFS4ERR_BAD_STATEID: | |
a1d0b5ee TM |
3787 | if (state != NULL) |
3788 | nfs_remove_bad_delegation(state->inode); | |
9e33bed5 TM |
3789 | case -NFS4ERR_OPENMODE: |
3790 | if (state == NULL) | |
3791 | break; | |
0400a6b0 TM |
3792 | nfs4_schedule_stateid_recovery(server, state); |
3793 | goto wait_on_recovery; | |
0ced63d1 TM |
3794 | case -NFS4ERR_EXPIRED: |
3795 | if (state != NULL) | |
3796 | nfs4_schedule_stateid_recovery(server, state); | |
1da177e4 | 3797 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 3798 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
3799 | nfs4_schedule_lease_recovery(clp); |
3800 | goto wait_on_recovery; | |
4745e315 AA |
3801 | #if defined(CONFIG_NFS_V4_1) |
3802 | case -NFS4ERR_BADSESSION: | |
3803 | case -NFS4ERR_BADSLOT: | |
3804 | case -NFS4ERR_BAD_HIGH_SLOT: | |
3805 | case -NFS4ERR_DEADSESSION: | |
3806 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
3807 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
3808 | case -NFS4ERR_SEQ_MISORDERED: | |
3809 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
3810 | task->tk_status); | |
0400a6b0 | 3811 | nfs4_schedule_session_recovery(clp->cl_session); |
4745e315 AA |
3812 | task->tk_status = 0; |
3813 | return -EAGAIN; | |
3814 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 3815 | case -NFS4ERR_DELAY: |
aa5190d0 | 3816 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 3817 | case -NFS4ERR_GRACE: |
2c643488 | 3818 | case -EKEYEXPIRED: |
1da177e4 LT |
3819 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
3820 | task->tk_status = 0; | |
3821 | return -EAGAIN; | |
a8a4ae3a | 3822 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
3823 | case -NFS4ERR_OLD_STATEID: |
3824 | task->tk_status = 0; | |
3825 | return -EAGAIN; | |
3826 | } | |
3827 | task->tk_status = nfs4_map_errors(task->tk_status); | |
3828 | return 0; | |
0400a6b0 | 3829 | wait_on_recovery: |
a2c0b9e2 | 3830 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
3831 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
3832 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
3833 | task->tk_status = 0; | |
3834 | return -EAGAIN; | |
1da177e4 LT |
3835 | } |
3836 | ||
cd93710e CL |
3837 | static void nfs4_construct_boot_verifier(struct nfs_client *clp, |
3838 | nfs4_verifier *bootverf) | |
3839 | { | |
3840 | __be32 verf[2]; | |
3841 | ||
3842 | verf[0] = htonl((u32)clp->cl_boot_time.tv_sec); | |
3843 | verf[1] = htonl((u32)clp->cl_boot_time.tv_nsec); | |
3844 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); | |
3845 | } | |
3846 | ||
bb8b27e5 TM |
3847 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
3848 | unsigned short port, struct rpc_cred *cred, | |
3849 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
3850 | { |
3851 | nfs4_verifier sc_verifier; | |
3852 | struct nfs4_setclientid setclientid = { | |
3853 | .sc_verifier = &sc_verifier, | |
3854 | .sc_prog = program, | |
f4eecd5d | 3855 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
3856 | }; |
3857 | struct rpc_message msg = { | |
3858 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
3859 | .rpc_argp = &setclientid, | |
bb8b27e5 | 3860 | .rpc_resp = res, |
286d7d6a | 3861 | .rpc_cred = cred, |
1da177e4 | 3862 | }; |
1da177e4 LT |
3863 | int loop = 0; |
3864 | int status; | |
3865 | ||
cd93710e | 3866 | nfs4_construct_boot_verifier(clp, &sc_verifier); |
1da177e4 LT |
3867 | |
3868 | for(;;) { | |
2446ab60 | 3869 | rcu_read_lock(); |
1da177e4 | 3870 | setclientid.sc_name_len = scnprintf(setclientid.sc_name, |
69dd716c | 3871 | sizeof(setclientid.sc_name), "%s/%s %s %s %u", |
d4d3c507 CL |
3872 | clp->cl_ipaddr, |
3873 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3874 | RPC_DISPLAY_ADDR), | |
69dd716c TM |
3875 | rpc_peeraddr2str(clp->cl_rpcclient, |
3876 | RPC_DISPLAY_PROTO), | |
78ea323b | 3877 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
1da177e4 LT |
3878 | clp->cl_id_uniquifier); |
3879 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, | |
d4d3c507 CL |
3880 | sizeof(setclientid.sc_netid), |
3881 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3882 | RPC_DISPLAY_NETID)); | |
1da177e4 | 3883 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 3884 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 | 3885 | clp->cl_ipaddr, port >> 8, port & 255); |
2446ab60 | 3886 | rcu_read_unlock(); |
1da177e4 | 3887 | |
1bd714f2 | 3888 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
3889 | if (status != -NFS4ERR_CLID_INUSE) |
3890 | break; | |
fd954ae1 TM |
3891 | if (loop != 0) { |
3892 | ++clp->cl_id_uniquifier; | |
1da177e4 | 3893 | break; |
fd954ae1 TM |
3894 | } |
3895 | ++loop; | |
3896 | ssleep(clp->cl_lease_time / HZ + 1); | |
1da177e4 LT |
3897 | } |
3898 | return status; | |
3899 | } | |
3900 | ||
fd954ae1 | 3901 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
3902 | struct nfs4_setclientid_res *arg, |
3903 | struct rpc_cred *cred) | |
1da177e4 LT |
3904 | { |
3905 | struct nfs_fsinfo fsinfo; | |
3906 | struct rpc_message msg = { | |
3907 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 3908 | .rpc_argp = arg, |
1da177e4 | 3909 | .rpc_resp = &fsinfo, |
286d7d6a | 3910 | .rpc_cred = cred, |
1da177e4 LT |
3911 | }; |
3912 | unsigned long now; | |
3913 | int status; | |
3914 | ||
3915 | now = jiffies; | |
1bd714f2 | 3916 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
3917 | if (status == 0) { |
3918 | spin_lock(&clp->cl_lock); | |
3919 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
3920 | clp->cl_last_renewal = now; | |
3921 | spin_unlock(&clp->cl_lock); | |
3922 | } | |
3923 | return status; | |
3924 | } | |
3925 | ||
fe650407 TM |
3926 | struct nfs4_delegreturndata { |
3927 | struct nfs4_delegreturnargs args; | |
fa178f29 | 3928 | struct nfs4_delegreturnres res; |
fe650407 TM |
3929 | struct nfs_fh fh; |
3930 | nfs4_stateid stateid; | |
26e976a8 | 3931 | unsigned long timestamp; |
fa178f29 | 3932 | struct nfs_fattr fattr; |
fe650407 TM |
3933 | int rpc_status; |
3934 | }; | |
3935 | ||
fe650407 TM |
3936 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
3937 | { | |
3938 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 3939 | |
14516c3a TM |
3940 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
3941 | return; | |
938e1010 | 3942 | |
79708861 RL |
3943 | switch (task->tk_status) { |
3944 | case -NFS4ERR_STALE_STATEID: | |
3945 | case -NFS4ERR_EXPIRED: | |
3946 | case 0: | |
fa178f29 | 3947 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
3948 | break; |
3949 | default: | |
3950 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
3951 | -EAGAIN) { | |
d00c5d43 | 3952 | rpc_restart_call_prepare(task); |
79708861 RL |
3953 | return; |
3954 | } | |
3955 | } | |
3956 | data->rpc_status = task->tk_status; | |
fe650407 TM |
3957 | } |
3958 | ||
3959 | static void nfs4_delegreturn_release(void *calldata) | |
3960 | { | |
fe650407 TM |
3961 | kfree(calldata); |
3962 | } | |
3963 | ||
938e1010 AA |
3964 | #if defined(CONFIG_NFS_V4_1) |
3965 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
3966 | { | |
3967 | struct nfs4_delegreturndata *d_data; | |
3968 | ||
3969 | d_data = (struct nfs4_delegreturndata *)data; | |
3970 | ||
035168ab | 3971 | if (nfs4_setup_sequence(d_data->res.server, |
938e1010 | 3972 | &d_data->args.seq_args, |
9d12b216 | 3973 | &d_data->res.seq_res, task)) |
938e1010 AA |
3974 | return; |
3975 | rpc_call_start(task); | |
3976 | } | |
3977 | #endif /* CONFIG_NFS_V4_1 */ | |
3978 | ||
c8d149f3 | 3979 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
3980 | #if defined(CONFIG_NFS_V4_1) |
3981 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
3982 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
3983 | .rpc_call_done = nfs4_delegreturn_done, |
3984 | .rpc_release = nfs4_delegreturn_release, | |
3985 | }; | |
3986 | ||
e6f81075 | 3987 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
3988 | { |
3989 | struct nfs4_delegreturndata *data; | |
fa178f29 | 3990 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 3991 | struct rpc_task *task; |
5138fde0 TM |
3992 | struct rpc_message msg = { |
3993 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
3994 | .rpc_cred = cred, | |
3995 | }; | |
c970aa85 TM |
3996 | struct rpc_task_setup task_setup_data = { |
3997 | .rpc_client = server->client, | |
5138fde0 | 3998 | .rpc_message = &msg, |
c970aa85 TM |
3999 | .callback_ops = &nfs4_delegreturn_ops, |
4000 | .flags = RPC_TASK_ASYNC, | |
4001 | }; | |
e6f81075 | 4002 | int status = 0; |
fe650407 | 4003 | |
8535b2be | 4004 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
4005 | if (data == NULL) |
4006 | return -ENOMEM; | |
9d12b216 | 4007 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
4008 | data->args.fhandle = &data->fh; |
4009 | data->args.stateid = &data->stateid; | |
fa178f29 | 4010 | data->args.bitmask = server->attr_bitmask; |
fe650407 | 4011 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 4012 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
4013 | data->res.fattr = &data->fattr; |
4014 | data->res.server = server; | |
5138fde0 | 4015 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 4016 | data->timestamp = jiffies; |
fe650407 TM |
4017 | data->rpc_status = 0; |
4018 | ||
c970aa85 | 4019 | task_setup_data.callback_data = data; |
1174dd1f TM |
4020 | msg.rpc_argp = &data->args; |
4021 | msg.rpc_resp = &data->res; | |
c970aa85 | 4022 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 4023 | if (IS_ERR(task)) |
fe650407 | 4024 | return PTR_ERR(task); |
e6f81075 TM |
4025 | if (!issync) |
4026 | goto out; | |
fe650407 | 4027 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
4028 | if (status != 0) |
4029 | goto out; | |
4030 | status = data->rpc_status; | |
4031 | if (status != 0) | |
4032 | goto out; | |
4033 | nfs_refresh_inode(inode, &data->fattr); | |
4034 | out: | |
e6b3c4db | 4035 | rpc_put_task(task); |
fe650407 | 4036 | return status; |
1da177e4 LT |
4037 | } |
4038 | ||
e6f81075 | 4039 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
4040 | { |
4041 | struct nfs_server *server = NFS_SERVER(inode); | |
4042 | struct nfs4_exception exception = { }; | |
4043 | int err; | |
4044 | do { | |
e6f81075 | 4045 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
4046 | switch (err) { |
4047 | case -NFS4ERR_STALE_STATEID: | |
4048 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
4049 | case 0: |
4050 | return 0; | |
4051 | } | |
4052 | err = nfs4_handle_exception(server, err, &exception); | |
4053 | } while (exception.retry); | |
4054 | return err; | |
4055 | } | |
4056 | ||
4057 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
4058 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
4059 | ||
4060 | /* | |
4061 | * sleep, with exponential backoff, and retry the LOCK operation. | |
4062 | */ | |
4063 | static unsigned long | |
4064 | nfs4_set_lock_task_retry(unsigned long timeout) | |
4065 | { | |
d310310c | 4066 | freezable_schedule_timeout_killable(timeout); |
1da177e4 LT |
4067 | timeout <<= 1; |
4068 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
4069 | return NFS4_LOCK_MAXTIMEOUT; | |
4070 | return timeout; | |
4071 | } | |
4072 | ||
1da177e4 LT |
4073 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4074 | { | |
4075 | struct inode *inode = state->inode; | |
4076 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 4077 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 4078 | struct nfs_lockt_args arg = { |
1da177e4 | 4079 | .fh = NFS_FH(inode), |
911d1aaf | 4080 | .fl = request, |
1da177e4 | 4081 | }; |
911d1aaf TM |
4082 | struct nfs_lockt_res res = { |
4083 | .denied = request, | |
1da177e4 LT |
4084 | }; |
4085 | struct rpc_message msg = { | |
4086 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
4087 | .rpc_argp = &arg, | |
4088 | .rpc_resp = &res, | |
4089 | .rpc_cred = state->owner->so_cred, | |
4090 | }; | |
1da177e4 LT |
4091 | struct nfs4_lock_state *lsp; |
4092 | int status; | |
4093 | ||
911d1aaf | 4094 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
4095 | status = nfs4_set_lock_state(state, request); |
4096 | if (status != 0) | |
4097 | goto out; | |
4098 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 4099 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4100 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 4101 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
4102 | switch (status) { |
4103 | case 0: | |
4104 | request->fl_type = F_UNLCK; | |
4105 | break; | |
4106 | case -NFS4ERR_DENIED: | |
4107 | status = 0; | |
1da177e4 | 4108 | } |
70cc6487 | 4109 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 4110 | out: |
1da177e4 LT |
4111 | return status; |
4112 | } | |
4113 | ||
4114 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4115 | { | |
4116 | struct nfs4_exception exception = { }; | |
4117 | int err; | |
4118 | ||
4119 | do { | |
4120 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
4121 | _nfs4_proc_getlk(state, cmd, request), | |
4122 | &exception); | |
4123 | } while (exception.retry); | |
4124 | return err; | |
4125 | } | |
4126 | ||
4127 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
4128 | { | |
4129 | int res = 0; | |
4130 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
4131 | case FL_POSIX: | |
4132 | res = posix_lock_file_wait(file, fl); | |
4133 | break; | |
4134 | case FL_FLOCK: | |
4135 | res = flock_lock_file_wait(file, fl); | |
4136 | break; | |
4137 | default: | |
4138 | BUG(); | |
4139 | } | |
1da177e4 LT |
4140 | return res; |
4141 | } | |
4142 | ||
faf5f49c | 4143 | struct nfs4_unlockdata { |
911d1aaf TM |
4144 | struct nfs_locku_args arg; |
4145 | struct nfs_locku_res res; | |
faf5f49c TM |
4146 | struct nfs4_lock_state *lsp; |
4147 | struct nfs_open_context *ctx; | |
911d1aaf TM |
4148 | struct file_lock fl; |
4149 | const struct nfs_server *server; | |
26e976a8 | 4150 | unsigned long timestamp; |
faf5f49c TM |
4151 | }; |
4152 | ||
911d1aaf TM |
4153 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
4154 | struct nfs_open_context *ctx, | |
4155 | struct nfs4_lock_state *lsp, | |
4156 | struct nfs_seqid *seqid) | |
4157 | { | |
4158 | struct nfs4_unlockdata *p; | |
4159 | struct inode *inode = lsp->ls_state->inode; | |
4160 | ||
8535b2be | 4161 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
4162 | if (p == NULL) |
4163 | return NULL; | |
4164 | p->arg.fh = NFS_FH(inode); | |
4165 | p->arg.fl = &p->fl; | |
4166 | p->arg.seqid = seqid; | |
c1d51931 | 4167 | p->res.seqid = seqid; |
911d1aaf TM |
4168 | p->arg.stateid = &lsp->ls_stateid; |
4169 | p->lsp = lsp; | |
4170 | atomic_inc(&lsp->ls_count); | |
4171 | /* Ensure we don't close file until we're done freeing locks! */ | |
4172 | p->ctx = get_nfs_open_context(ctx); | |
4173 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4174 | p->server = NFS_SERVER(inode); | |
4175 | return p; | |
4176 | } | |
4177 | ||
06f814a3 | 4178 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 4179 | { |
963d8fe5 | 4180 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 4181 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
4182 | nfs4_put_lock_state(calldata->lsp); |
4183 | put_nfs_open_context(calldata->ctx); | |
4184 | kfree(calldata); | |
faf5f49c TM |
4185 | } |
4186 | ||
963d8fe5 | 4187 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 4188 | { |
963d8fe5 | 4189 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4190 | |
14516c3a TM |
4191 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
4192 | return; | |
faf5f49c TM |
4193 | switch (task->tk_status) { |
4194 | case 0: | |
f597c537 TM |
4195 | nfs4_stateid_copy(&calldata->lsp->ls_stateid, |
4196 | &calldata->res.stateid); | |
26e976a8 | 4197 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 4198 | break; |
9e33bed5 TM |
4199 | case -NFS4ERR_BAD_STATEID: |
4200 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
4201 | case -NFS4ERR_STALE_STATEID: |
4202 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
4203 | break; |
4204 | default: | |
9e33bed5 | 4205 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
d00c5d43 | 4206 | rpc_restart_call_prepare(task); |
faf5f49c | 4207 | } |
faf5f49c TM |
4208 | } |
4209 | ||
4ce70ada | 4210 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 4211 | { |
4ce70ada | 4212 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4213 | |
911d1aaf | 4214 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c TM |
4215 | return; |
4216 | if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) { | |
963d8fe5 TM |
4217 | /* Note: exit _without_ running nfs4_locku_done */ |
4218 | task->tk_action = NULL; | |
faf5f49c TM |
4219 | return; |
4220 | } | |
26e976a8 | 4221 | calldata->timestamp = jiffies; |
035168ab | 4222 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 4223 | &calldata->arg.seq_args, |
9d12b216 | 4224 | &calldata->res.seq_res, task)) |
a893693c | 4225 | return; |
5138fde0 | 4226 | rpc_call_start(task); |
faf5f49c TM |
4227 | } |
4228 | ||
963d8fe5 | 4229 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 4230 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 4231 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 4232 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
4233 | }; |
4234 | ||
a5d16a4d TM |
4235 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
4236 | struct nfs_open_context *ctx, | |
4237 | struct nfs4_lock_state *lsp, | |
4238 | struct nfs_seqid *seqid) | |
4239 | { | |
4240 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
4241 | struct rpc_message msg = { |
4242 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
4243 | .rpc_cred = ctx->cred, | |
4244 | }; | |
c970aa85 TM |
4245 | struct rpc_task_setup task_setup_data = { |
4246 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 4247 | .rpc_message = &msg, |
c970aa85 | 4248 | .callback_ops = &nfs4_locku_ops, |
101070ca | 4249 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4250 | .flags = RPC_TASK_ASYNC, |
4251 | }; | |
a5d16a4d | 4252 | |
137d6aca FF |
4253 | /* Ensure this is an unlock - when canceling a lock, the |
4254 | * canceled lock is passed in, and it won't be an unlock. | |
4255 | */ | |
4256 | fl->fl_type = F_UNLCK; | |
4257 | ||
a5d16a4d TM |
4258 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
4259 | if (data == NULL) { | |
4260 | nfs_free_seqid(seqid); | |
4261 | return ERR_PTR(-ENOMEM); | |
4262 | } | |
4263 | ||
9d12b216 | 4264 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4265 | msg.rpc_argp = &data->arg; |
4266 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4267 | task_setup_data.callback_data = data; |
4268 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
4269 | } |
4270 | ||
faf5f49c TM |
4271 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
4272 | { | |
19e03c57 | 4273 | struct nfs_inode *nfsi = NFS_I(state->inode); |
911d1aaf | 4274 | struct nfs_seqid *seqid; |
1da177e4 | 4275 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
4276 | struct rpc_task *task; |
4277 | int status = 0; | |
536ff0f8 | 4278 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 4279 | |
8d0a8a9d | 4280 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
4281 | /* Unlock _before_ we do the RPC call */ |
4282 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
4283 | down_read(&nfsi->rwsem); |
4284 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
4285 | up_read(&nfsi->rwsem); | |
9b073574 | 4286 | goto out; |
19e03c57 TM |
4287 | } |
4288 | up_read(&nfsi->rwsem); | |
8d0a8a9d | 4289 | if (status != 0) |
9b073574 TM |
4290 | goto out; |
4291 | /* Is this a delegated lock? */ | |
4292 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
4293 | goto out; | |
8d0a8a9d | 4294 | lsp = request->fl_u.nfs4_fl.owner; |
8535b2be | 4295 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 4296 | status = -ENOMEM; |
911d1aaf | 4297 | if (seqid == NULL) |
9b073574 | 4298 | goto out; |
cd3758e3 | 4299 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
4300 | status = PTR_ERR(task); |
4301 | if (IS_ERR(task)) | |
9b073574 | 4302 | goto out; |
a5d16a4d | 4303 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 4304 | rpc_put_task(task); |
9b073574 | 4305 | out: |
536ff0f8 | 4306 | request->fl_flags = fl_flags; |
1da177e4 LT |
4307 | return status; |
4308 | } | |
4309 | ||
a5d16a4d TM |
4310 | struct nfs4_lockdata { |
4311 | struct nfs_lock_args arg; | |
4312 | struct nfs_lock_res res; | |
4313 | struct nfs4_lock_state *lsp; | |
4314 | struct nfs_open_context *ctx; | |
4315 | struct file_lock fl; | |
26e976a8 | 4316 | unsigned long timestamp; |
a5d16a4d TM |
4317 | int rpc_status; |
4318 | int cancelled; | |
66179efe | 4319 | struct nfs_server *server; |
a5d16a4d TM |
4320 | }; |
4321 | ||
4322 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
4323 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
4324 | gfp_t gfp_mask) | |
1da177e4 | 4325 | { |
a5d16a4d TM |
4326 | struct nfs4_lockdata *p; |
4327 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 4328 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 4329 | |
8535b2be | 4330 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
4331 | if (p == NULL) |
4332 | return NULL; | |
4333 | ||
4334 | p->arg.fh = NFS_FH(inode); | |
4335 | p->arg.fl = &p->fl; | |
8535b2be | 4336 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4337 | if (p->arg.open_seqid == NULL) |
4338 | goto out_free; | |
8535b2be | 4339 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4340 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4341 | goto out_free_seqid; |
a5d16a4d | 4342 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4343 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 4344 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4345 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 4346 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4347 | p->lsp = lsp; |
66179efe | 4348 | p->server = server; |
a5d16a4d TM |
4349 | atomic_inc(&lsp->ls_count); |
4350 | p->ctx = get_nfs_open_context(ctx); | |
4351 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4352 | return p; | |
2f74c0a0 TM |
4353 | out_free_seqid: |
4354 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4355 | out_free: |
4356 | kfree(p); | |
4357 | return NULL; | |
4358 | } | |
4359 | ||
4360 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4361 | { | |
4362 | struct nfs4_lockdata *data = calldata; | |
4363 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4364 | |
3110ff80 | 4365 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
4366 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
4367 | return; | |
a5d16a4d TM |
4368 | /* Do we need to do an open_to_lock_owner? */ |
4369 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 TM |
4370 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
4371 | return; | |
a5d16a4d TM |
4372 | data->arg.open_stateid = &state->stateid; |
4373 | data->arg.new_lock_owner = 1; | |
c1d51931 | 4374 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4375 | } else |
4376 | data->arg.new_lock_owner = 0; | |
26e976a8 | 4377 | data->timestamp = jiffies; |
035168ab TM |
4378 | if (nfs4_setup_sequence(data->server, |
4379 | &data->arg.seq_args, | |
9d12b216 | 4380 | &data->res.seq_res, task)) |
66179efe | 4381 | return; |
5138fde0 | 4382 | rpc_call_start(task); |
3110ff80 | 4383 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
a5d16a4d TM |
4384 | } |
4385 | ||
b257957e AB |
4386 | static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata) |
4387 | { | |
4388 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
4389 | nfs4_lock_prepare(task, calldata); | |
4390 | } | |
4391 | ||
a5d16a4d TM |
4392 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4393 | { | |
4394 | struct nfs4_lockdata *data = calldata; | |
4395 | ||
3110ff80 | 4396 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4397 | |
14516c3a TM |
4398 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4399 | return; | |
66179efe | 4400 | |
a5d16a4d | 4401 | data->rpc_status = task->tk_status; |
a5d16a4d | 4402 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4403 | if (data->rpc_status == 0) |
4404 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4405 | else | |
4406 | goto out; | |
4407 | } | |
4408 | if (data->rpc_status == 0) { | |
f597c537 | 4409 | nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid); |
a5d16a4d | 4410 | data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; |
3d4ff43d | 4411 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 4412 | } |
a5d16a4d | 4413 | out: |
3110ff80 | 4414 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4415 | } |
4416 | ||
4417 | static void nfs4_lock_release(void *calldata) | |
4418 | { | |
4419 | struct nfs4_lockdata *data = calldata; | |
4420 | ||
3110ff80 | 4421 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4422 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4423 | if (data->cancelled != 0) { |
4424 | struct rpc_task *task; | |
4425 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4426 | data->arg.lock_seqid); | |
4427 | if (!IS_ERR(task)) | |
bf294b41 | 4428 | rpc_put_task_async(task); |
3110ff80 | 4429 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4430 | } else |
4431 | nfs_free_seqid(data->arg.lock_seqid); | |
4432 | nfs4_put_lock_state(data->lsp); | |
4433 | put_nfs_open_context(data->ctx); | |
4434 | kfree(data); | |
3110ff80 | 4435 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4436 | } |
4437 | ||
4438 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4439 | .rpc_call_prepare = nfs4_lock_prepare, | |
4440 | .rpc_call_done = nfs4_lock_done, | |
4441 | .rpc_release = nfs4_lock_release, | |
4442 | }; | |
4443 | ||
b257957e AB |
4444 | static const struct rpc_call_ops nfs4_recover_lock_ops = { |
4445 | .rpc_call_prepare = nfs4_recover_lock_prepare, | |
4446 | .rpc_call_done = nfs4_lock_done, | |
4447 | .rpc_release = nfs4_lock_release, | |
4448 | }; | |
4449 | ||
2bee72a6 TM |
4450 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4451 | { | |
2bee72a6 TM |
4452 | switch (error) { |
4453 | case -NFS4ERR_ADMIN_REVOKED: | |
4454 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 4455 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 TM |
4456 | if (new_lock_owner != 0 || |
4457 | (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0) | |
ecac799a | 4458 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
4459 | break; |
4460 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 4461 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
4462 | case -NFS4ERR_EXPIRED: |
4463 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
4464 | }; |
4465 | } | |
4466 | ||
afe6c27c | 4467 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4468 | { |
4469 | struct nfs4_lockdata *data; | |
4470 | struct rpc_task *task; | |
5138fde0 TM |
4471 | struct rpc_message msg = { |
4472 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4473 | .rpc_cred = state->owner->so_cred, | |
4474 | }; | |
c970aa85 TM |
4475 | struct rpc_task_setup task_setup_data = { |
4476 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4477 | .rpc_message = &msg, |
c970aa85 | 4478 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4479 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4480 | .flags = RPC_TASK_ASYNC, |
4481 | }; | |
a5d16a4d TM |
4482 | int ret; |
4483 | ||
3110ff80 | 4484 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4485 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4486 | fl->fl_u.nfs4_fl.owner, |
4487 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4488 | if (data == NULL) |
4489 | return -ENOMEM; | |
4490 | if (IS_SETLKW(cmd)) | |
4491 | data->arg.block = 1; | |
b257957e AB |
4492 | if (recovery_type > NFS_LOCK_NEW) { |
4493 | if (recovery_type == NFS_LOCK_RECLAIM) | |
afe6c27c | 4494 | data->arg.reclaim = NFS_LOCK_RECLAIM; |
b257957e AB |
4495 | task_setup_data.callback_ops = &nfs4_recover_lock_ops; |
4496 | } | |
9d12b216 | 4497 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4498 | msg.rpc_argp = &data->arg; |
4499 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4500 | task_setup_data.callback_data = data; |
4501 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 4502 | if (IS_ERR(task)) |
a5d16a4d | 4503 | return PTR_ERR(task); |
a5d16a4d TM |
4504 | ret = nfs4_wait_for_completion_rpc_task(task); |
4505 | if (ret == 0) { | |
4506 | ret = data->rpc_status; | |
2bee72a6 TM |
4507 | if (ret) |
4508 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4509 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4510 | } else |
4511 | data->cancelled = 1; | |
e6b3c4db | 4512 | rpc_put_task(task); |
3110ff80 | 4513 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4514 | return ret; |
1da177e4 LT |
4515 | } |
4516 | ||
4517 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4518 | { | |
202b50dc TM |
4519 | struct nfs_server *server = NFS_SERVER(state->inode); |
4520 | struct nfs4_exception exception = { }; | |
4521 | int err; | |
4522 | ||
4523 | do { | |
42a2d13e TM |
4524 | /* Cache the lock if possible... */ |
4525 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4526 | return 0; | |
afe6c27c | 4527 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 4528 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
4529 | break; |
4530 | nfs4_handle_exception(server, err, &exception); | |
4531 | } while (exception.retry); | |
4532 | return err; | |
1da177e4 LT |
4533 | } |
4534 | ||
4535 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4536 | { | |
202b50dc TM |
4537 | struct nfs_server *server = NFS_SERVER(state->inode); |
4538 | struct nfs4_exception exception = { }; | |
4539 | int err; | |
4540 | ||
6bfc93ef TM |
4541 | err = nfs4_set_lock_state(state, request); |
4542 | if (err != 0) | |
4543 | return err; | |
202b50dc | 4544 | do { |
42a2d13e TM |
4545 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4546 | return 0; | |
afe6c27c | 4547 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
4548 | switch (err) { |
4549 | default: | |
4550 | goto out; | |
4551 | case -NFS4ERR_GRACE: | |
4552 | case -NFS4ERR_DELAY: | |
4553 | nfs4_handle_exception(server, err, &exception); | |
4554 | err = 0; | |
4555 | } | |
202b50dc | 4556 | } while (exception.retry); |
a9ed2e25 | 4557 | out: |
202b50dc | 4558 | return err; |
1da177e4 LT |
4559 | } |
4560 | ||
f062eb6c | 4561 | #if defined(CONFIG_NFS_V4_1) |
b01dd1d8 | 4562 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 4563 | { |
b01dd1d8 BS |
4564 | int status, ret = NFS_OK; |
4565 | struct nfs4_lock_state *lsp; | |
f062eb6c BS |
4566 | struct nfs_server *server = NFS_SERVER(state->inode); |
4567 | ||
b01dd1d8 BS |
4568 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
4569 | if (lsp->ls_flags & NFS_LOCK_INITIALIZED) { | |
4570 | status = nfs41_test_stateid(server, &lsp->ls_stateid); | |
4571 | if (status != NFS_OK) { | |
4572 | nfs41_free_stateid(server, &lsp->ls_stateid); | |
4573 | lsp->ls_flags &= ~NFS_LOCK_INITIALIZED; | |
4574 | ret = status; | |
4575 | } | |
4576 | } | |
4577 | }; | |
4578 | ||
4579 | return ret; | |
4580 | } | |
4581 | ||
4582 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4583 | { | |
4584 | int status = NFS_OK; | |
4585 | ||
4586 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
4587 | status = nfs41_check_expired_locks(state); | |
f062eb6c | 4588 | if (status == NFS_OK) |
b01dd1d8 | 4589 | return status; |
f062eb6c BS |
4590 | return nfs4_lock_expired(state, request); |
4591 | } | |
4592 | #endif | |
4593 | ||
1da177e4 LT |
4594 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4595 | { | |
19e03c57 | 4596 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 4597 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 4598 | int status = -ENOLCK; |
1da177e4 | 4599 | |
8e469ebd TM |
4600 | if ((fl_flags & FL_POSIX) && |
4601 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
4602 | goto out; | |
6bfc93ef | 4603 | /* Is this a delegated open? */ |
6bfc93ef TM |
4604 | status = nfs4_set_lock_state(state, request); |
4605 | if (status != 0) | |
4606 | goto out; | |
01c3b861 TM |
4607 | request->fl_flags |= FL_ACCESS; |
4608 | status = do_vfs_lock(request->fl_file, request); | |
4609 | if (status < 0) | |
4610 | goto out; | |
19e03c57 | 4611 | down_read(&nfsi->rwsem); |
01c3b861 | 4612 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 4613 | /* Yes: cache locks! */ |
01c3b861 | 4614 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
4615 | request->fl_flags = fl_flags & ~FL_SLEEP; |
4616 | status = do_vfs_lock(request->fl_file, request); | |
4617 | goto out_unlock; | |
01c3b861 | 4618 | } |
afe6c27c | 4619 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 4620 | if (status != 0) |
01c3b861 | 4621 | goto out_unlock; |
6bfc93ef | 4622 | /* Note: we always want to sleep here! */ |
01c3b861 | 4623 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 4624 | if (do_vfs_lock(request->fl_file, request) < 0) |
a030889a WAA |
4625 | printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " |
4626 | "manager!\n", __func__); | |
01c3b861 | 4627 | out_unlock: |
19e03c57 | 4628 | up_read(&nfsi->rwsem); |
01c3b861 TM |
4629 | out: |
4630 | request->fl_flags = fl_flags; | |
1da177e4 LT |
4631 | return status; |
4632 | } | |
4633 | ||
4634 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4635 | { | |
a1d0b5ee TM |
4636 | struct nfs4_exception exception = { |
4637 | .state = state, | |
4638 | }; | |
1da177e4 LT |
4639 | int err; |
4640 | ||
4641 | do { | |
965b5d67 TM |
4642 | err = _nfs4_proc_setlk(state, cmd, request); |
4643 | if (err == -NFS4ERR_DENIED) | |
4644 | err = -EAGAIN; | |
1da177e4 | 4645 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 4646 | err, &exception); |
1da177e4 LT |
4647 | } while (exception.retry); |
4648 | return err; | |
4649 | } | |
4650 | ||
4651 | static int | |
4652 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
4653 | { | |
4654 | struct nfs_open_context *ctx; | |
4655 | struct nfs4_state *state; | |
4656 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
4657 | int status; | |
4658 | ||
4659 | /* verify open state */ | |
cd3758e3 | 4660 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
4661 | state = ctx->state; |
4662 | ||
4663 | if (request->fl_start < 0 || request->fl_end < 0) | |
4664 | return -EINVAL; | |
4665 | ||
d953126a TM |
4666 | if (IS_GETLK(cmd)) { |
4667 | if (state != NULL) | |
4668 | return nfs4_proc_getlk(state, F_GETLK, request); | |
4669 | return 0; | |
4670 | } | |
1da177e4 LT |
4671 | |
4672 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
4673 | return -EINVAL; | |
4674 | ||
d953126a TM |
4675 | if (request->fl_type == F_UNLCK) { |
4676 | if (state != NULL) | |
4677 | return nfs4_proc_unlck(state, cmd, request); | |
4678 | return 0; | |
4679 | } | |
1da177e4 | 4680 | |
d953126a TM |
4681 | if (state == NULL) |
4682 | return -ENOLCK; | |
1da177e4 LT |
4683 | do { |
4684 | status = nfs4_proc_setlk(state, cmd, request); | |
4685 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
4686 | break; | |
4687 | timeout = nfs4_set_lock_task_retry(timeout); | |
4688 | status = -ERESTARTSYS; | |
4689 | if (signalled()) | |
4690 | break; | |
4691 | } while(status < 0); | |
1da177e4 LT |
4692 | return status; |
4693 | } | |
4694 | ||
888e694c TM |
4695 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
4696 | { | |
4697 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4698 | struct nfs4_exception exception = { }; | |
4699 | int err; | |
4700 | ||
4701 | err = nfs4_set_lock_state(state, fl); | |
4702 | if (err != 0) | |
4703 | goto out; | |
4704 | do { | |
afe6c27c | 4705 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
d5122201 TM |
4706 | switch (err) { |
4707 | default: | |
a030889a WAA |
4708 | printk(KERN_ERR "NFS: %s: unhandled error " |
4709 | "%d.\n", __func__, err); | |
d5122201 | 4710 | case 0: |
965b5d67 | 4711 | case -ESTALE: |
d5122201 TM |
4712 | goto out; |
4713 | case -NFS4ERR_EXPIRED: | |
0ced63d1 | 4714 | nfs4_schedule_stateid_recovery(server, state); |
d5122201 | 4715 | case -NFS4ERR_STALE_CLIENTID: |
965b5d67 | 4716 | case -NFS4ERR_STALE_STATEID: |
0400a6b0 TM |
4717 | nfs4_schedule_lease_recovery(server->nfs_client); |
4718 | goto out; | |
74e7bb73 RL |
4719 | case -NFS4ERR_BADSESSION: |
4720 | case -NFS4ERR_BADSLOT: | |
4721 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4722 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4723 | case -NFS4ERR_DEADSESSION: | |
0400a6b0 | 4724 | nfs4_schedule_session_recovery(server->nfs_client->cl_session); |
d5122201 | 4725 | goto out; |
965b5d67 TM |
4726 | case -ERESTARTSYS: |
4727 | /* | |
4728 | * The show must go on: exit, but mark the | |
4729 | * stateid as needing recovery. | |
4730 | */ | |
a1d0b5ee | 4731 | case -NFS4ERR_DELEG_REVOKED: |
965b5d67 TM |
4732 | case -NFS4ERR_ADMIN_REVOKED: |
4733 | case -NFS4ERR_BAD_STATEID: | |
4734 | case -NFS4ERR_OPENMODE: | |
0400a6b0 | 4735 | nfs4_schedule_stateid_recovery(server, state); |
965b5d67 TM |
4736 | err = 0; |
4737 | goto out; | |
168667c4 TM |
4738 | case -EKEYEXPIRED: |
4739 | /* | |
4740 | * User RPCSEC_GSS context has expired. | |
4741 | * We cannot recover this stateid now, so | |
4742 | * skip it and allow recovery thread to | |
4743 | * proceed. | |
4744 | */ | |
4745 | err = 0; | |
4746 | goto out; | |
965b5d67 TM |
4747 | case -ENOMEM: |
4748 | case -NFS4ERR_DENIED: | |
4749 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
4750 | err = 0; | |
4751 | goto out; | |
d5122201 TM |
4752 | case -NFS4ERR_DELAY: |
4753 | break; | |
4754 | } | |
888e694c TM |
4755 | err = nfs4_handle_exception(server, err, &exception); |
4756 | } while (exception.retry); | |
4757 | out: | |
4758 | return err; | |
4759 | } | |
6b3b5496 | 4760 | |
cf470c3e TM |
4761 | struct nfs_release_lockowner_data { |
4762 | struct nfs4_lock_state *lsp; | |
4763 | struct nfs_release_lockowner_args args; | |
4764 | }; | |
4765 | ||
d3c7b7cc TM |
4766 | static void nfs4_release_lockowner_release(void *calldata) |
4767 | { | |
cf470c3e TM |
4768 | struct nfs_release_lockowner_data *data = calldata; |
4769 | nfs4_free_lock_state(data->lsp); | |
d3c7b7cc TM |
4770 | kfree(calldata); |
4771 | } | |
4772 | ||
17280175 | 4773 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
d3c7b7cc TM |
4774 | .rpc_release = nfs4_release_lockowner_release, |
4775 | }; | |
4776 | ||
cf470c3e | 4777 | int nfs4_release_lockowner(struct nfs4_lock_state *lsp) |
d3c7b7cc TM |
4778 | { |
4779 | struct nfs_server *server = lsp->ls_state->owner->so_server; | |
cf470c3e | 4780 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
4781 | struct rpc_message msg = { |
4782 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
4783 | }; | |
4784 | ||
4785 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
cf470c3e TM |
4786 | return -EINVAL; |
4787 | data = kmalloc(sizeof(*data), GFP_NOFS); | |
4788 | if (!data) | |
4789 | return -ENOMEM; | |
4790 | data->lsp = lsp; | |
4791 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; | |
4792 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
4793 | data->args.lock_owner.s_dev = server->s_dev; | |
4794 | msg.rpc_argp = &data->args; | |
4795 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); | |
4796 | return 0; | |
d3c7b7cc TM |
4797 | } |
4798 | ||
aa1870af BF |
4799 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
4800 | ||
64c2ce8b AK |
4801 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
4802 | const void *buf, size_t buflen, | |
4803 | int flags, int type) | |
6b3b5496 | 4804 | { |
64c2ce8b AK |
4805 | if (strcmp(key, "") != 0) |
4806 | return -EINVAL; | |
4b580ee3 | 4807 | |
64c2ce8b | 4808 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4809 | } |
4810 | ||
64c2ce8b AK |
4811 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
4812 | void *buf, size_t buflen, int type) | |
6b3b5496 | 4813 | { |
64c2ce8b AK |
4814 | if (strcmp(key, "") != 0) |
4815 | return -EINVAL; | |
aa1870af | 4816 | |
64c2ce8b | 4817 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4818 | } |
4819 | ||
64c2ce8b AK |
4820 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
4821 | size_t list_len, const char *name, | |
4822 | size_t name_len, int type) | |
6b3b5496 | 4823 | { |
64c2ce8b | 4824 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 4825 | |
096455a2 BF |
4826 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
4827 | return 0; | |
64c2ce8b AK |
4828 | |
4829 | if (list && len <= list_len) | |
4830 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 4831 | return len; |
6b3b5496 BF |
4832 | } |
4833 | ||
533eb461 AA |
4834 | /* |
4835 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
4836 | */ | |
69aaaae1 TM |
4837 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
4838 | { | |
533eb461 AA |
4839 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
4840 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
4841 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 4842 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
4843 | return; |
4844 | ||
4845 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 4846 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
4847 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
4848 | fattr->nlink = 2; | |
4849 | } | |
4850 | ||
56659e99 | 4851 | int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, |
7aaa0b3b | 4852 | struct nfs4_fs_locations *fs_locations, struct page *page) |
683b57b4 TM |
4853 | { |
4854 | struct nfs_server *server = NFS_SERVER(dir); | |
4855 | u32 bitmask[2] = { | |
361e624f | 4856 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
4857 | }; |
4858 | struct nfs4_fs_locations_arg args = { | |
4859 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 4860 | .name = name, |
683b57b4 TM |
4861 | .page = page, |
4862 | .bitmask = bitmask, | |
4863 | }; | |
22958463 BH |
4864 | struct nfs4_fs_locations_res res = { |
4865 | .fs_locations = fs_locations, | |
4866 | }; | |
683b57b4 TM |
4867 | struct rpc_message msg = { |
4868 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
4869 | .rpc_argp = &args, | |
22958463 | 4870 | .rpc_resp = &res, |
683b57b4 TM |
4871 | }; |
4872 | int status; | |
4873 | ||
3110ff80 | 4874 | dprintk("%s: start\n", __func__); |
533eb461 AA |
4875 | |
4876 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
4877 | * is not supported */ | |
4878 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
4879 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
4880 | else | |
4881 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
4882 | ||
c228fd3a | 4883 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 4884 | fs_locations->server = server; |
830b8e33 | 4885 | fs_locations->nlocations = 0; |
7c513058 | 4886 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 4887 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
4888 | return status; |
4889 | } | |
4890 | ||
5a5ea0d4 BS |
4891 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) |
4892 | { | |
4893 | int status; | |
4894 | struct nfs4_secinfo_arg args = { | |
4895 | .dir_fh = NFS_FH(dir), | |
4896 | .name = name, | |
4897 | }; | |
4898 | struct nfs4_secinfo_res res = { | |
4899 | .flavors = flavors, | |
4900 | }; | |
4901 | struct rpc_message msg = { | |
4902 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
4903 | .rpc_argp = &args, | |
4904 | .rpc_resp = &res, | |
4905 | }; | |
4906 | ||
4907 | dprintk("NFS call secinfo %s\n", name->name); | |
4908 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); | |
4909 | dprintk("NFS reply secinfo: %d\n", status); | |
4910 | return status; | |
4911 | } | |
4912 | ||
17280175 TM |
4913 | static int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
4914 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
4915 | { |
4916 | struct nfs4_exception exception = { }; | |
4917 | int err; | |
4918 | do { | |
4919 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
4920 | _nfs4_proc_secinfo(dir, name, flavors), | |
4921 | &exception); | |
4922 | } while (exception.retry); | |
4923 | return err; | |
4924 | } | |
4925 | ||
557134a3 | 4926 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
4927 | /* |
4928 | * Check the exchange flags returned by the server for invalid flags, having | |
4929 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
4930 | * DS flags set. | |
4931 | */ | |
4932 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
4933 | { | |
4934 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
4935 | goto out_inval; | |
4936 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
4937 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
4938 | goto out_inval; | |
4939 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
4940 | goto out_inval; | |
4941 | return NFS_OK; | |
4942 | out_inval: | |
4943 | return -NFS4ERR_INVAL; | |
4944 | } | |
4945 | ||
78fe0f41 WAA |
4946 | static bool |
4947 | nfs41_same_server_scope(struct server_scope *a, struct server_scope *b) | |
4948 | { | |
4949 | if (a->server_scope_sz == b->server_scope_sz && | |
4950 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
4951 | return true; | |
4952 | ||
4953 | return false; | |
4954 | } | |
4955 | ||
99fe60d0 BH |
4956 | /* |
4957 | * nfs4_proc_exchange_id() | |
4958 | * | |
4959 | * Since the clientid has expired, all compounds using sessions | |
4960 | * associated with the stale clientid will be returning | |
4961 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
4962 | * be in some phase of session reset. | |
4963 | */ | |
4d643d1d | 4964 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
4965 | { |
4966 | nfs4_verifier verifier; | |
4967 | struct nfs41_exchange_id_args args = { | |
cd93710e | 4968 | .verifier = &verifier, |
99fe60d0 | 4969 | .client = clp, |
357f54d6 | 4970 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, |
99fe60d0 BH |
4971 | }; |
4972 | struct nfs41_exchange_id_res res = { | |
4973 | .client = clp, | |
4974 | }; | |
4975 | int status; | |
4976 | struct rpc_message msg = { | |
4977 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
4978 | .rpc_argp = &args, | |
4979 | .rpc_resp = &res, | |
4980 | .rpc_cred = cred, | |
4981 | }; | |
99fe60d0 BH |
4982 | |
4983 | dprintk("--> %s\n", __func__); | |
4984 | BUG_ON(clp == NULL); | |
a7b72103 | 4985 | |
cd93710e | 4986 | nfs4_construct_boot_verifier(clp, &verifier); |
99fe60d0 | 4987 | |
c7a360b0 AA |
4988 | args.id_len = scnprintf(args.id, sizeof(args.id), |
4989 | "%s/%s.%s/%u", | |
4990 | clp->cl_ipaddr, | |
4991 | init_utsname()->nodename, | |
4992 | init_utsname()->domainname, | |
4993 | clp->cl_rpcclient->cl_auth->au_flavor); | |
99fe60d0 | 4994 | |
78fe0f41 | 4995 | res.server_scope = kzalloc(sizeof(struct server_scope), GFP_KERNEL); |
9edbd953 WAA |
4996 | if (unlikely(!res.server_scope)) { |
4997 | status = -ENOMEM; | |
4998 | goto out; | |
4999 | } | |
78fe0f41 | 5000 | |
7d2ed9ac WAA |
5001 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_KERNEL); |
5002 | if (unlikely(!res.impl_id)) { | |
5003 | status = -ENOMEM; | |
5004 | goto out_server_scope; | |
5005 | } | |
5006 | ||
1bd714f2 | 5007 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c7a360b0 AA |
5008 | if (!status) |
5009 | status = nfs4_check_cl_exchange_flags(clp->cl_exchange_flags); | |
78fe0f41 | 5010 | |
7d2ed9ac WAA |
5011 | if (!status) { |
5012 | /* use the most recent implementation id */ | |
5013 | kfree(clp->impl_id); | |
5014 | clp->impl_id = res.impl_id; | |
5015 | } else | |
5016 | kfree(res.impl_id); | |
5017 | ||
78fe0f41 WAA |
5018 | if (!status) { |
5019 | if (clp->server_scope && | |
5020 | !nfs41_same_server_scope(clp->server_scope, | |
5021 | res.server_scope)) { | |
5022 | dprintk("%s: server_scope mismatch detected\n", | |
5023 | __func__); | |
5024 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
5025 | kfree(clp->server_scope); | |
5026 | clp->server_scope = NULL; | |
5027 | } | |
5028 | ||
9edbd953 | 5029 | if (!clp->server_scope) { |
78fe0f41 | 5030 | clp->server_scope = res.server_scope; |
9edbd953 WAA |
5031 | goto out; |
5032 | } | |
78fe0f41 | 5033 | } |
7d2ed9ac WAA |
5034 | |
5035 | out_server_scope: | |
9edbd953 WAA |
5036 | kfree(res.server_scope); |
5037 | out: | |
7d2ed9ac WAA |
5038 | if (clp->impl_id) |
5039 | dprintk("%s: Server Implementation ID: " | |
5040 | "domain: %s, name: %s, date: %llu,%u\n", | |
5041 | __func__, clp->impl_id->domain, clp->impl_id->name, | |
5042 | clp->impl_id->date.seconds, | |
5043 | clp->impl_id->date.nseconds); | |
99fe60d0 BH |
5044 | dprintk("<-- %s status= %d\n", __func__, status); |
5045 | return status; | |
5046 | } | |
5047 | ||
2050f0cc AA |
5048 | struct nfs4_get_lease_time_data { |
5049 | struct nfs4_get_lease_time_args *args; | |
5050 | struct nfs4_get_lease_time_res *res; | |
5051 | struct nfs_client *clp; | |
5052 | }; | |
5053 | ||
5054 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
5055 | void *calldata) | |
5056 | { | |
5057 | int ret; | |
5058 | struct nfs4_get_lease_time_data *data = | |
5059 | (struct nfs4_get_lease_time_data *)calldata; | |
5060 | ||
5061 | dprintk("--> %s\n", __func__); | |
689cf5c1 | 5062 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
2050f0cc AA |
5063 | /* just setup sequence, do not trigger session recovery |
5064 | since we're invoked within one */ | |
5065 | ret = nfs41_setup_sequence(data->clp->cl_session, | |
689cf5c1 | 5066 | &data->args->la_seq_args, |
9d12b216 | 5067 | &data->res->lr_seq_res, task); |
2050f0cc AA |
5068 | |
5069 | BUG_ON(ret == -EAGAIN); | |
5070 | rpc_call_start(task); | |
5071 | dprintk("<-- %s\n", __func__); | |
5072 | } | |
5073 | ||
5074 | /* | |
5075 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
5076 | * from sequence operation or clientid errors. | |
5077 | */ | |
5078 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
5079 | { | |
5080 | struct nfs4_get_lease_time_data *data = | |
5081 | (struct nfs4_get_lease_time_data *)calldata; | |
5082 | ||
5083 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5084 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
5085 | return; | |
2050f0cc AA |
5086 | switch (task->tk_status) { |
5087 | case -NFS4ERR_DELAY: | |
5088 | case -NFS4ERR_GRACE: | |
5089 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
5090 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
5091 | task->tk_status = 0; | |
a8a4ae3a AA |
5092 | /* fall through */ |
5093 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 5094 | rpc_restart_call_prepare(task); |
2050f0cc AA |
5095 | return; |
5096 | } | |
2050f0cc AA |
5097 | dprintk("<-- %s\n", __func__); |
5098 | } | |
5099 | ||
17280175 | 5100 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
5101 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
5102 | .rpc_call_done = nfs4_get_lease_time_done, | |
5103 | }; | |
5104 | ||
5105 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
5106 | { | |
5107 | struct rpc_task *task; | |
5108 | struct nfs4_get_lease_time_args args; | |
5109 | struct nfs4_get_lease_time_res res = { | |
5110 | .lr_fsinfo = fsinfo, | |
5111 | }; | |
5112 | struct nfs4_get_lease_time_data data = { | |
5113 | .args = &args, | |
5114 | .res = &res, | |
5115 | .clp = clp, | |
5116 | }; | |
5117 | struct rpc_message msg = { | |
5118 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
5119 | .rpc_argp = &args, | |
5120 | .rpc_resp = &res, | |
5121 | }; | |
5122 | struct rpc_task_setup task_setup = { | |
5123 | .rpc_client = clp->cl_rpcclient, | |
5124 | .rpc_message = &msg, | |
5125 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
5126 | .callback_data = &data, |
5127 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
5128 | }; |
5129 | int status; | |
5130 | ||
9d12b216 | 5131 | nfs41_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
2050f0cc AA |
5132 | dprintk("--> %s\n", __func__); |
5133 | task = rpc_run_task(&task_setup); | |
5134 | ||
5135 | if (IS_ERR(task)) | |
5136 | status = PTR_ERR(task); | |
5137 | else { | |
5138 | status = task->tk_status; | |
5139 | rpc_put_task(task); | |
5140 | } | |
5141 | dprintk("<-- %s return %d\n", __func__, status); | |
5142 | ||
5143 | return status; | |
5144 | } | |
5145 | ||
f86f36a6 TM |
5146 | static struct nfs4_slot *nfs4_alloc_slots(u32 max_slots, gfp_t gfp_flags) |
5147 | { | |
5148 | return kcalloc(max_slots, sizeof(struct nfs4_slot), gfp_flags); | |
5149 | } | |
5150 | ||
5151 | static void nfs4_add_and_init_slots(struct nfs4_slot_table *tbl, | |
5152 | struct nfs4_slot *new, | |
5153 | u32 max_slots, | |
5154 | u32 ivalue) | |
5155 | { | |
5156 | struct nfs4_slot *old = NULL; | |
5157 | u32 i; | |
5158 | ||
5159 | spin_lock(&tbl->slot_tbl_lock); | |
5160 | if (new) { | |
5161 | old = tbl->slots; | |
5162 | tbl->slots = new; | |
5163 | tbl->max_slots = max_slots; | |
5164 | } | |
5165 | tbl->highest_used_slotid = -1; /* no slot is currently used */ | |
5166 | for (i = 0; i < tbl->max_slots; i++) | |
5167 | tbl->slots[i].seq_nr = ivalue; | |
5168 | spin_unlock(&tbl->slot_tbl_lock); | |
5169 | kfree(old); | |
5170 | } | |
5171 | ||
b73dafa7 | 5172 | /* |
f86f36a6 | 5173 | * (re)Initialise a slot table |
b73dafa7 | 5174 | */ |
f86f36a6 TM |
5175 | static int nfs4_realloc_slot_table(struct nfs4_slot_table *tbl, u32 max_reqs, |
5176 | u32 ivalue) | |
ac72b7b3 | 5177 | { |
104aeba4 | 5178 | struct nfs4_slot *new = NULL; |
f86f36a6 | 5179 | int ret = -ENOMEM; |
ac72b7b3 | 5180 | |
104aeba4 AA |
5181 | dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__, |
5182 | max_reqs, tbl->max_slots); | |
ac72b7b3 | 5183 | |
104aeba4 AA |
5184 | /* Does the newly negotiated max_reqs match the existing slot table? */ |
5185 | if (max_reqs != tbl->max_slots) { | |
f86f36a6 | 5186 | new = nfs4_alloc_slots(max_reqs, GFP_NOFS); |
104aeba4 AA |
5187 | if (!new) |
5188 | goto out; | |
104aeba4 | 5189 | } |
f86f36a6 TM |
5190 | ret = 0; |
5191 | ||
5192 | nfs4_add_and_init_slots(tbl, new, max_reqs, ivalue); | |
ac72b7b3 AA |
5193 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, |
5194 | tbl, tbl->slots, tbl->max_slots); | |
5195 | out: | |
5196 | dprintk("<-- %s: return %d\n", __func__, ret); | |
5197 | return ret; | |
5198 | } | |
5199 | ||
f8625a6a RL |
5200 | /* Destroy the slot table */ |
5201 | static void nfs4_destroy_slot_tables(struct nfs4_session *session) | |
5202 | { | |
5203 | if (session->fc_slot_table.slots != NULL) { | |
5204 | kfree(session->fc_slot_table.slots); | |
5205 | session->fc_slot_table.slots = NULL; | |
5206 | } | |
5207 | if (session->bc_slot_table.slots != NULL) { | |
5208 | kfree(session->bc_slot_table.slots); | |
5209 | session->bc_slot_table.slots = NULL; | |
5210 | } | |
5211 | return; | |
5212 | } | |
5213 | ||
050047ce | 5214 | /* |
aacd5537 | 5215 | * Initialize or reset the forechannel and backchannel tables |
050047ce | 5216 | */ |
aacd5537 | 5217 | static int nfs4_setup_session_slot_tables(struct nfs4_session *ses) |
050047ce | 5218 | { |
f26468fb | 5219 | struct nfs4_slot_table *tbl; |
aacd5537 | 5220 | int status; |
050047ce | 5221 | |
aacd5537 AA |
5222 | dprintk("--> %s\n", __func__); |
5223 | /* Fore channel */ | |
5224 | tbl = &ses->fc_slot_table; | |
f86f36a6 TM |
5225 | status = nfs4_realloc_slot_table(tbl, ses->fc_attrs.max_reqs, 1); |
5226 | if (status) /* -ENOMEM */ | |
5227 | return status; | |
aacd5537 AA |
5228 | /* Back channel */ |
5229 | tbl = &ses->bc_slot_table; | |
f86f36a6 TM |
5230 | status = nfs4_realloc_slot_table(tbl, ses->bc_attrs.max_reqs, 0); |
5231 | if (status && tbl->slots == NULL) | |
5232 | /* Fore and back channel share a connection so get | |
5233 | * both slot tables or neither */ | |
5234 | nfs4_destroy_slot_tables(ses); | |
f8625a6a | 5235 | return status; |
557134a3 AA |
5236 | } |
5237 | ||
5238 | struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) | |
5239 | { | |
5240 | struct nfs4_session *session; | |
5241 | struct nfs4_slot_table *tbl; | |
5242 | ||
8535b2be | 5243 | session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); |
557134a3 AA |
5244 | if (!session) |
5245 | return NULL; | |
76db6d95 | 5246 | |
557134a3 | 5247 | tbl = &session->fc_slot_table; |
45d43c29 | 5248 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
557134a3 | 5249 | spin_lock_init(&tbl->slot_tbl_lock); |
689cf5c1 | 5250 | rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table"); |
42acd021 | 5251 | init_completion(&tbl->complete); |
f8625a6a RL |
5252 | |
5253 | tbl = &session->bc_slot_table; | |
45d43c29 | 5254 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
f8625a6a RL |
5255 | spin_lock_init(&tbl->slot_tbl_lock); |
5256 | rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table"); | |
42acd021 | 5257 | init_completion(&tbl->complete); |
f8625a6a | 5258 | |
1055d76d TM |
5259 | session->session_state = 1<<NFS4_SESSION_INITING; |
5260 | ||
557134a3 AA |
5261 | session->clp = clp; |
5262 | return session; | |
5263 | } | |
5264 | ||
5265 | void nfs4_destroy_session(struct nfs4_session *session) | |
5266 | { | |
2446ab60 TM |
5267 | struct rpc_xprt *xprt; |
5268 | ||
5a0ffe54 | 5269 | nfs4_proc_destroy_session(session); |
2446ab60 TM |
5270 | |
5271 | rcu_read_lock(); | |
5272 | xprt = rcu_dereference(session->clp->cl_rpcclient->cl_xprt); | |
5273 | rcu_read_unlock(); | |
5a0ffe54 | 5274 | dprintk("%s Destroy backchannel for xprt %p\n", |
2446ab60 TM |
5275 | __func__, xprt); |
5276 | xprt_destroy_backchannel(xprt, NFS41_BC_MIN_CALLBACKS); | |
f8625a6a | 5277 | nfs4_destroy_slot_tables(session); |
557134a3 AA |
5278 | kfree(session); |
5279 | } | |
5280 | ||
fc931582 AA |
5281 | /* |
5282 | * Initialize the values to be used by the client in CREATE_SESSION | |
5283 | * If nfs4_init_session set the fore channel request and response sizes, | |
5284 | * use them. | |
5285 | * | |
5286 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
5287 | * always set csa_cachethis to FALSE because the current implementation | |
5288 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
5289 | */ | |
5290 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
5291 | { | |
5292 | struct nfs4_session *session = args->client->cl_session; | |
5293 | unsigned int mxrqst_sz = session->fc_attrs.max_rqst_sz, | |
5294 | mxresp_sz = session->fc_attrs.max_resp_sz; | |
5295 | ||
5296 | if (mxrqst_sz == 0) | |
5297 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
5298 | if (mxresp_sz == 0) | |
5299 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
5300 | /* Fore channel attributes */ | |
fc931582 AA |
5301 | args->fc_attrs.max_rqst_sz = mxrqst_sz; |
5302 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 | 5303 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 5304 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
5305 | |
5306 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 5307 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
5308 | __func__, |
5309 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 5310 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
5311 | |
5312 | /* Back channel attributes */ | |
fc931582 AA |
5313 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
5314 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
5315 | args->bc_attrs.max_resp_sz_cached = 0; | |
5316 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
5317 | args->bc_attrs.max_reqs = 1; | |
5318 | ||
5319 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
5320 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
5321 | __func__, | |
5322 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
5323 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
5324 | args->bc_attrs.max_reqs); | |
5325 | } | |
5326 | ||
43c2e885 | 5327 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 5328 | { |
43c2e885 BF |
5329 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
5330 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
5331 | ||
43c2e885 BF |
5332 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
5333 | return -EINVAL; | |
5334 | /* | |
5335 | * Our requested max_ops is the minimum we need; we're not | |
5336 | * prepared to break up compounds into smaller pieces than that. | |
5337 | * So, no point even trying to continue if the server won't | |
5338 | * cooperate: | |
5339 | */ | |
5340 | if (rcvd->max_ops < sent->max_ops) | |
5341 | return -EINVAL; | |
5342 | if (rcvd->max_reqs == 0) | |
5343 | return -EINVAL; | |
b4b9a0c1 VG |
5344 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
5345 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 5346 | return 0; |
8d35301d AA |
5347 | } |
5348 | ||
43c2e885 BF |
5349 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
5350 | { | |
5351 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
5352 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 5353 | |
43c2e885 BF |
5354 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
5355 | return -EINVAL; | |
5356 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
5357 | return -EINVAL; | |
5358 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
5359 | return -EINVAL; | |
5360 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 5361 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 5362 | return -EINVAL; |
b4b9a0c1 | 5363 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 BF |
5364 | return -EINVAL; |
5365 | return 0; | |
5366 | } | |
8d35301d | 5367 | |
8d35301d AA |
5368 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
5369 | struct nfs4_session *session) | |
5370 | { | |
43c2e885 | 5371 | int ret; |
8d35301d | 5372 | |
43c2e885 BF |
5373 | ret = nfs4_verify_fore_channel_attrs(args, session); |
5374 | if (ret) | |
5375 | return ret; | |
5376 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
5377 | } |
5378 | ||
fc931582 AA |
5379 | static int _nfs4_proc_create_session(struct nfs_client *clp) |
5380 | { | |
5381 | struct nfs4_session *session = clp->cl_session; | |
5382 | struct nfs41_create_session_args args = { | |
5383 | .client = clp, | |
5384 | .cb_program = NFS4_CALLBACK, | |
5385 | }; | |
5386 | struct nfs41_create_session_res res = { | |
5387 | .client = clp, | |
5388 | }; | |
5389 | struct rpc_message msg = { | |
5390 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
5391 | .rpc_argp = &args, | |
5392 | .rpc_resp = &res, | |
5393 | }; | |
5394 | int status; | |
5395 | ||
5396 | nfs4_init_channel_attrs(&args); | |
0f91421e | 5397 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 5398 | |
1bd714f2 | 5399 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
fc931582 | 5400 | |
8d35301d AA |
5401 | if (!status) |
5402 | /* Verify the session's negotiated channel_attrs values */ | |
5403 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
5404 | if (!status) { |
5405 | /* Increment the clientid slot sequence id */ | |
5406 | clp->cl_seqid++; | |
5407 | } | |
5408 | ||
5409 | return status; | |
5410 | } | |
5411 | ||
5412 | /* | |
5413 | * Issues a CREATE_SESSION operation to the server. | |
5414 | * It is the responsibility of the caller to verify the session is | |
5415 | * expired before calling this routine. | |
5416 | */ | |
f26468fb | 5417 | int nfs4_proc_create_session(struct nfs_client *clp) |
fc931582 AA |
5418 | { |
5419 | int status; | |
5420 | unsigned *ptr; | |
fc931582 AA |
5421 | struct nfs4_session *session = clp->cl_session; |
5422 | ||
5423 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
5424 | ||
fd954ae1 | 5425 | status = _nfs4_proc_create_session(clp); |
fc931582 AA |
5426 | if (status) |
5427 | goto out; | |
5428 | ||
aacd5537 AA |
5429 | /* Init or reset the session slot tables */ |
5430 | status = nfs4_setup_session_slot_tables(session); | |
5431 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
5432 | if (status) |
5433 | goto out; | |
5434 | ||
5435 | ptr = (unsigned *)&session->sess_id.data[0]; | |
5436 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
5437 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
5438 | out: |
5439 | dprintk("<-- %s\n", __func__); | |
5440 | return status; | |
5441 | } | |
5442 | ||
0f3e66c6 AA |
5443 | /* |
5444 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
5445 | * The caller must serialize access to this routine. | |
5446 | */ | |
5447 | int nfs4_proc_destroy_session(struct nfs4_session *session) | |
5448 | { | |
5449 | int status = 0; | |
5450 | struct rpc_message msg; | |
5451 | ||
5452 | dprintk("--> nfs4_proc_destroy_session\n"); | |
5453 | ||
5454 | /* session is still being setup */ | |
5455 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
5456 | return status; | |
5457 | ||
5458 | msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION]; | |
5459 | msg.rpc_argp = session; | |
5460 | msg.rpc_resp = NULL; | |
5461 | msg.rpc_cred = NULL; | |
1bd714f2 | 5462 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
0f3e66c6 AA |
5463 | |
5464 | if (status) | |
5465 | printk(KERN_WARNING | |
f9fd2d9c | 5466 | "NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
5467 | "Session has been destroyed regardless...\n", status); |
5468 | ||
5469 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
5470 | return status; | |
5471 | } | |
5472 | ||
fccba804 TM |
5473 | int nfs4_init_session(struct nfs_server *server) |
5474 | { | |
5475 | struct nfs_client *clp = server->nfs_client; | |
2449ea2e | 5476 | struct nfs4_session *session; |
68bf05ef | 5477 | unsigned int rsize, wsize; |
fccba804 TM |
5478 | int ret; |
5479 | ||
5480 | if (!nfs4_has_session(clp)) | |
5481 | return 0; | |
5482 | ||
1055d76d TM |
5483 | session = clp->cl_session; |
5484 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5485 | return 0; | |
5486 | ||
68bf05ef AA |
5487 | rsize = server->rsize; |
5488 | if (rsize == 0) | |
5489 | rsize = NFS_MAX_FILE_IO_SIZE; | |
5490 | wsize = server->wsize; | |
5491 | if (wsize == 0) | |
5492 | wsize = NFS_MAX_FILE_IO_SIZE; | |
5493 | ||
68bf05ef AA |
5494 | session->fc_attrs.max_rqst_sz = wsize + nfs41_maxwrite_overhead; |
5495 | session->fc_attrs.max_resp_sz = rsize + nfs41_maxread_overhead; | |
2449ea2e | 5496 | |
fccba804 TM |
5497 | ret = nfs4_recover_expired_lease(server); |
5498 | if (!ret) | |
5499 | ret = nfs4_check_client_ready(clp); | |
5500 | return ret; | |
5501 | } | |
5502 | ||
d83217c1 AA |
5503 | int nfs4_init_ds_session(struct nfs_client *clp) |
5504 | { | |
5505 | struct nfs4_session *session = clp->cl_session; | |
5506 | int ret; | |
5507 | ||
5508 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5509 | return 0; | |
5510 | ||
5511 | ret = nfs4_client_recover_expired_lease(clp); | |
5512 | if (!ret) | |
5513 | /* Test for the DS role */ | |
5514 | if (!is_ds_client(clp)) | |
5515 | ret = -ENODEV; | |
5516 | if (!ret) | |
5517 | ret = nfs4_check_client_ready(clp); | |
5518 | return ret; | |
5519 | ||
5520 | } | |
5521 | EXPORT_SYMBOL_GPL(nfs4_init_ds_session); | |
5522 | ||
5523 | ||
fc01cea9 AA |
5524 | /* |
5525 | * Renew the cl_session lease. | |
5526 | */ | |
d5f8d3fe TM |
5527 | struct nfs4_sequence_data { |
5528 | struct nfs_client *clp; | |
5529 | struct nfs4_sequence_args args; | |
5530 | struct nfs4_sequence_res res; | |
5531 | }; | |
5532 | ||
dc96aef9 AB |
5533 | static void nfs41_sequence_release(void *data) |
5534 | { | |
d5f8d3fe TM |
5535 | struct nfs4_sequence_data *calldata = data; |
5536 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 5537 | |
7135840f AB |
5538 | if (atomic_read(&clp->cl_count) > 1) |
5539 | nfs4_schedule_state_renewal(clp); | |
5540 | nfs_put_client(clp); | |
d5f8d3fe | 5541 | kfree(calldata); |
dc96aef9 AB |
5542 | } |
5543 | ||
aa5190d0 TM |
5544 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5545 | { | |
5546 | switch(task->tk_status) { | |
5547 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5548 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5549 | return -EAGAIN; | |
5550 | default: | |
0400a6b0 | 5551 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5552 | } |
5553 | return 0; | |
5554 | } | |
5555 | ||
dc96aef9 | 5556 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 5557 | { |
d5f8d3fe TM |
5558 | struct nfs4_sequence_data *calldata = data; |
5559 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 5560 | |
14516c3a TM |
5561 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
5562 | return; | |
fc01cea9 AA |
5563 | |
5564 | if (task->tk_status < 0) { | |
5565 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
5566 | if (atomic_read(&clp->cl_count) == 1) |
5567 | goto out; | |
fc01cea9 | 5568 | |
aa5190d0 TM |
5569 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
5570 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
5571 | return; |
5572 | } | |
5573 | } | |
fc01cea9 | 5574 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 5575 | out: |
fc01cea9 AA |
5576 | dprintk("<-- %s\n", __func__); |
5577 | } | |
5578 | ||
5579 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
5580 | { | |
d5f8d3fe TM |
5581 | struct nfs4_sequence_data *calldata = data; |
5582 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
5583 | struct nfs4_sequence_args *args; |
5584 | struct nfs4_sequence_res *res; | |
5585 | ||
fc01cea9 AA |
5586 | args = task->tk_msg.rpc_argp; |
5587 | res = task->tk_msg.rpc_resp; | |
5588 | ||
9d12b216 | 5589 | if (nfs41_setup_sequence(clp->cl_session, args, res, task)) |
fc01cea9 AA |
5590 | return; |
5591 | rpc_call_start(task); | |
5592 | } | |
5593 | ||
5594 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
5595 | .rpc_call_done = nfs41_sequence_call_done, | |
5596 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 5597 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
5598 | }; |
5599 | ||
71ac6da9 | 5600 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) |
fc01cea9 | 5601 | { |
d5f8d3fe | 5602 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
5603 | struct rpc_message msg = { |
5604 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
5605 | .rpc_cred = cred, | |
5606 | }; | |
71ac6da9 TM |
5607 | struct rpc_task_setup task_setup_data = { |
5608 | .rpc_client = clp->cl_rpcclient, | |
5609 | .rpc_message = &msg, | |
5610 | .callback_ops = &nfs41_sequence_ops, | |
5611 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT, | |
5612 | }; | |
fc01cea9 | 5613 | |
7135840f | 5614 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 5615 | return ERR_PTR(-EIO); |
dfb4f309 | 5616 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 5617 | if (calldata == NULL) { |
7135840f | 5618 | nfs_put_client(clp); |
71ac6da9 | 5619 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 5620 | } |
9d12b216 | 5621 | nfs41_init_sequence(&calldata->args, &calldata->res, 0); |
d5f8d3fe TM |
5622 | msg.rpc_argp = &calldata->args; |
5623 | msg.rpc_resp = &calldata->res; | |
5624 | calldata->clp = clp; | |
71ac6da9 | 5625 | task_setup_data.callback_data = calldata; |
fc01cea9 | 5626 | |
71ac6da9 TM |
5627 | return rpc_run_task(&task_setup_data); |
5628 | } | |
5629 | ||
2f60ea6b | 5630 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
5631 | { |
5632 | struct rpc_task *task; | |
5633 | int ret = 0; | |
5634 | ||
2f60ea6b TM |
5635 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
5636 | return 0; | |
71ac6da9 TM |
5637 | task = _nfs41_proc_sequence(clp, cred); |
5638 | if (IS_ERR(task)) | |
5639 | ret = PTR_ERR(task); | |
5640 | else | |
bf294b41 | 5641 | rpc_put_task_async(task); |
71ac6da9 TM |
5642 | dprintk("<-- %s status=%d\n", __func__, ret); |
5643 | return ret; | |
5644 | } | |
5645 | ||
5646 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5647 | { | |
5648 | struct rpc_task *task; | |
5649 | int ret; | |
5650 | ||
5651 | task = _nfs41_proc_sequence(clp, cred); | |
5652 | if (IS_ERR(task)) { | |
5653 | ret = PTR_ERR(task); | |
5654 | goto out; | |
5655 | } | |
5656 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
5657 | if (!ret) { |
5658 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
5659 | ||
5660 | if (task->tk_status == 0) | |
5661 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 5662 | ret = task->tk_status; |
b4410c2f | 5663 | } |
71ac6da9 TM |
5664 | rpc_put_task(task); |
5665 | out: | |
5666 | dprintk("<-- %s status=%d\n", __func__, ret); | |
5667 | return ret; | |
fc01cea9 AA |
5668 | } |
5669 | ||
fce5c838 RL |
5670 | struct nfs4_reclaim_complete_data { |
5671 | struct nfs_client *clp; | |
5672 | struct nfs41_reclaim_complete_args arg; | |
5673 | struct nfs41_reclaim_complete_res res; | |
5674 | }; | |
5675 | ||
5676 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
5677 | { | |
5678 | struct nfs4_reclaim_complete_data *calldata = data; | |
5679 | ||
b257957e | 5680 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
035168ab TM |
5681 | if (nfs41_setup_sequence(calldata->clp->cl_session, |
5682 | &calldata->arg.seq_args, | |
9d12b216 | 5683 | &calldata->res.seq_res, task)) |
fce5c838 RL |
5684 | return; |
5685 | ||
5686 | rpc_call_start(task); | |
5687 | } | |
5688 | ||
aa5190d0 TM |
5689 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5690 | { | |
5691 | switch(task->tk_status) { | |
5692 | case 0: | |
5693 | case -NFS4ERR_COMPLETE_ALREADY: | |
5694 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
5695 | break; | |
5696 | case -NFS4ERR_DELAY: | |
aa5190d0 | 5697 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
5698 | /* fall through */ |
5699 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
5700 | return -EAGAIN; |
5701 | default: | |
0400a6b0 | 5702 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5703 | } |
5704 | return 0; | |
5705 | } | |
5706 | ||
fce5c838 RL |
5707 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
5708 | { | |
5709 | struct nfs4_reclaim_complete_data *calldata = data; | |
5710 | struct nfs_client *clp = calldata->clp; | |
5711 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
5712 | ||
5713 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5714 | if (!nfs41_sequence_done(task, res)) |
5715 | return; | |
fce5c838 | 5716 | |
aa5190d0 TM |
5717 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
5718 | rpc_restart_call_prepare(task); | |
5719 | return; | |
5720 | } | |
fce5c838 RL |
5721 | dprintk("<-- %s\n", __func__); |
5722 | } | |
5723 | ||
5724 | static void nfs4_free_reclaim_complete_data(void *data) | |
5725 | { | |
5726 | struct nfs4_reclaim_complete_data *calldata = data; | |
5727 | ||
5728 | kfree(calldata); | |
5729 | } | |
5730 | ||
5731 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
5732 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
5733 | .rpc_call_done = nfs4_reclaim_complete_done, | |
5734 | .rpc_release = nfs4_free_reclaim_complete_data, | |
5735 | }; | |
5736 | ||
5737 | /* | |
5738 | * Issue a global reclaim complete. | |
5739 | */ | |
5740 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
5741 | { | |
5742 | struct nfs4_reclaim_complete_data *calldata; | |
5743 | struct rpc_task *task; | |
5744 | struct rpc_message msg = { | |
5745 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
5746 | }; | |
5747 | struct rpc_task_setup task_setup_data = { | |
5748 | .rpc_client = clp->cl_rpcclient, | |
5749 | .rpc_message = &msg, | |
5750 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
5751 | .flags = RPC_TASK_ASYNC, | |
5752 | }; | |
5753 | int status = -ENOMEM; | |
5754 | ||
5755 | dprintk("--> %s\n", __func__); | |
8535b2be | 5756 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
5757 | if (calldata == NULL) |
5758 | goto out; | |
5759 | calldata->clp = clp; | |
5760 | calldata->arg.one_fs = 0; | |
fce5c838 | 5761 | |
9d12b216 | 5762 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
fce5c838 RL |
5763 | msg.rpc_argp = &calldata->arg; |
5764 | msg.rpc_resp = &calldata->res; | |
5765 | task_setup_data.callback_data = calldata; | |
5766 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 5767 | if (IS_ERR(task)) { |
fce5c838 | 5768 | status = PTR_ERR(task); |
acf82b85 DC |
5769 | goto out; |
5770 | } | |
c34c32ea AA |
5771 | status = nfs4_wait_for_completion_rpc_task(task); |
5772 | if (status == 0) | |
5773 | status = task->tk_status; | |
fce5c838 | 5774 | rpc_put_task(task); |
acf82b85 | 5775 | return 0; |
fce5c838 RL |
5776 | out: |
5777 | dprintk("<-- %s status=%d\n", __func__, status); | |
5778 | return status; | |
5779 | } | |
b1f69b75 AA |
5780 | |
5781 | static void | |
5782 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
5783 | { | |
5784 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 5785 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
b1f69b75 AA |
5786 | |
5787 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
5788 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
5789 | * right now covering the LAYOUTGET we are about to send. | |
5790 | * However, that is not so catastrophic, and there seems | |
5791 | * to be no way to prevent it completely. | |
5792 | */ | |
b1f69b75 | 5793 | if (nfs4_setup_sequence(server, &lgp->args.seq_args, |
9d12b216 | 5794 | &lgp->res.seq_res, task)) |
b1f69b75 | 5795 | return; |
cf7d63f1 FI |
5796 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
5797 | NFS_I(lgp->args.inode)->layout, | |
5798 | lgp->args.ctx->state)) { | |
5799 | rpc_exit(task, NFS4_OK); | |
5800 | return; | |
5801 | } | |
b1f69b75 AA |
5802 | rpc_call_start(task); |
5803 | } | |
5804 | ||
5805 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
5806 | { | |
5807 | struct nfs4_layoutget *lgp = calldata; | |
5808 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5809 | ||
5810 | dprintk("--> %s\n", __func__); | |
5811 | ||
5812 | if (!nfs4_sequence_done(task, &lgp->res.seq_res)) | |
5813 | return; | |
5814 | ||
5815 | switch (task->tk_status) { | |
5816 | case 0: | |
5817 | break; | |
5818 | case -NFS4ERR_LAYOUTTRYLATER: | |
5819 | case -NFS4ERR_RECALLCONFLICT: | |
5820 | task->tk_status = -NFS4ERR_DELAY; | |
5821 | /* Fall through */ | |
5822 | default: | |
5823 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
5824 | rpc_restart_call_prepare(task); | |
5825 | return; | |
5826 | } | |
5827 | } | |
b1f69b75 AA |
5828 | dprintk("<-- %s\n", __func__); |
5829 | } | |
5830 | ||
5831 | static void nfs4_layoutget_release(void *calldata) | |
5832 | { | |
5833 | struct nfs4_layoutget *lgp = calldata; | |
5834 | ||
5835 | dprintk("--> %s\n", __func__); | |
b1f69b75 AA |
5836 | put_nfs_open_context(lgp->args.ctx); |
5837 | kfree(calldata); | |
5838 | dprintk("<-- %s\n", __func__); | |
5839 | } | |
5840 | ||
5841 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
5842 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
5843 | .rpc_call_done = nfs4_layoutget_done, | |
5844 | .rpc_release = nfs4_layoutget_release, | |
5845 | }; | |
5846 | ||
5847 | int nfs4_proc_layoutget(struct nfs4_layoutget *lgp) | |
5848 | { | |
5849 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5850 | struct rpc_task *task; | |
5851 | struct rpc_message msg = { | |
5852 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
5853 | .rpc_argp = &lgp->args, | |
5854 | .rpc_resp = &lgp->res, | |
5855 | }; | |
5856 | struct rpc_task_setup task_setup_data = { | |
5857 | .rpc_client = server->client, | |
5858 | .rpc_message = &msg, | |
5859 | .callback_ops = &nfs4_layoutget_call_ops, | |
5860 | .callback_data = lgp, | |
5861 | .flags = RPC_TASK_ASYNC, | |
5862 | }; | |
5863 | int status = 0; | |
5864 | ||
5865 | dprintk("--> %s\n", __func__); | |
5866 | ||
35124a09 | 5867 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 5868 | lgp->res.seq_res.sr_slot = NULL; |
9d12b216 | 5869 | nfs41_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
b1f69b75 AA |
5870 | task = rpc_run_task(&task_setup_data); |
5871 | if (IS_ERR(task)) | |
5872 | return PTR_ERR(task); | |
5873 | status = nfs4_wait_for_completion_rpc_task(task); | |
c31663d4 FI |
5874 | if (status == 0) |
5875 | status = task->tk_status; | |
5876 | if (status == 0) | |
5877 | status = pnfs_layout_process(lgp); | |
b1f69b75 AA |
5878 | rpc_put_task(task); |
5879 | dprintk("<-- %s status=%d\n", __func__, status); | |
5880 | return status; | |
5881 | } | |
5882 | ||
cbe82603 BH |
5883 | static void |
5884 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
5885 | { | |
5886 | struct nfs4_layoutreturn *lrp = calldata; | |
5887 | ||
5888 | dprintk("--> %s\n", __func__); | |
5889 | if (nfs41_setup_sequence(lrp->clp->cl_session, &lrp->args.seq_args, | |
9d12b216 | 5890 | &lrp->res.seq_res, task)) |
cbe82603 BH |
5891 | return; |
5892 | rpc_call_start(task); | |
5893 | } | |
5894 | ||
5895 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
5896 | { | |
5897 | struct nfs4_layoutreturn *lrp = calldata; | |
5898 | struct nfs_server *server; | |
a56aaa02 | 5899 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
5900 | |
5901 | dprintk("--> %s\n", __func__); | |
5902 | ||
5903 | if (!nfs4_sequence_done(task, &lrp->res.seq_res)) | |
5904 | return; | |
5905 | ||
5906 | server = NFS_SERVER(lrp->args.inode); | |
5907 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 5908 | rpc_restart_call_prepare(task); |
cbe82603 BH |
5909 | return; |
5910 | } | |
a2e1d4f2 | 5911 | spin_lock(&lo->plh_inode->i_lock); |
cbe82603 | 5912 | if (task->tk_status == 0) { |
cbe82603 | 5913 | if (lrp->res.lrs_present) { |
cbe82603 | 5914 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); |
cbe82603 BH |
5915 | } else |
5916 | BUG_ON(!list_empty(&lo->plh_segs)); | |
5917 | } | |
a2e1d4f2 FI |
5918 | lo->plh_block_lgets--; |
5919 | spin_unlock(&lo->plh_inode->i_lock); | |
cbe82603 BH |
5920 | dprintk("<-- %s\n", __func__); |
5921 | } | |
5922 | ||
5923 | static void nfs4_layoutreturn_release(void *calldata) | |
5924 | { | |
5925 | struct nfs4_layoutreturn *lrp = calldata; | |
5926 | ||
5927 | dprintk("--> %s\n", __func__); | |
a56aaa02 | 5928 | put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
5929 | kfree(calldata); |
5930 | dprintk("<-- %s\n", __func__); | |
5931 | } | |
5932 | ||
5933 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
5934 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
5935 | .rpc_call_done = nfs4_layoutreturn_done, | |
5936 | .rpc_release = nfs4_layoutreturn_release, | |
5937 | }; | |
5938 | ||
5939 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
5940 | { | |
5941 | struct rpc_task *task; | |
5942 | struct rpc_message msg = { | |
5943 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
5944 | .rpc_argp = &lrp->args, | |
5945 | .rpc_resp = &lrp->res, | |
5946 | }; | |
5947 | struct rpc_task_setup task_setup_data = { | |
5948 | .rpc_client = lrp->clp->cl_rpcclient, | |
5949 | .rpc_message = &msg, | |
5950 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
5951 | .callback_data = lrp, | |
5952 | }; | |
5953 | int status; | |
5954 | ||
5955 | dprintk("--> %s\n", __func__); | |
9d12b216 | 5956 | nfs41_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
5957 | task = rpc_run_task(&task_setup_data); |
5958 | if (IS_ERR(task)) | |
5959 | return PTR_ERR(task); | |
5960 | status = task->tk_status; | |
5961 | dprintk("<-- %s status=%d\n", __func__, status); | |
5962 | rpc_put_task(task); | |
5963 | return status; | |
5964 | } | |
5965 | ||
7f11d8d3 AA |
5966 | /* |
5967 | * Retrieve the list of Data Server devices from the MDS. | |
5968 | */ | |
5969 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
5970 | const struct nfs_fh *fh, | |
5971 | struct pnfs_devicelist *devlist) | |
5972 | { | |
5973 | struct nfs4_getdevicelist_args args = { | |
5974 | .fh = fh, | |
5975 | .layoutclass = server->pnfs_curr_ld->id, | |
5976 | }; | |
5977 | struct nfs4_getdevicelist_res res = { | |
5978 | .devlist = devlist, | |
5979 | }; | |
5980 | struct rpc_message msg = { | |
5981 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
5982 | .rpc_argp = &args, | |
5983 | .rpc_resp = &res, | |
5984 | }; | |
5985 | int status; | |
5986 | ||
5987 | dprintk("--> %s\n", __func__); | |
5988 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
5989 | &res.seq_res, 0); | |
5990 | dprintk("<-- %s status=%d\n", __func__, status); | |
5991 | return status; | |
5992 | } | |
5993 | ||
5994 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
5995 | const struct nfs_fh *fh, | |
5996 | struct pnfs_devicelist *devlist) | |
5997 | { | |
5998 | struct nfs4_exception exception = { }; | |
5999 | int err; | |
6000 | ||
6001 | do { | |
6002 | err = nfs4_handle_exception(server, | |
6003 | _nfs4_getdevicelist(server, fh, devlist), | |
6004 | &exception); | |
6005 | } while (exception.retry); | |
6006 | ||
6007 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
6008 | err, devlist->num_devs); | |
6009 | ||
6010 | return err; | |
6011 | } | |
6012 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
6013 | ||
b1f69b75 AA |
6014 | static int |
6015 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6016 | { | |
6017 | struct nfs4_getdeviceinfo_args args = { | |
6018 | .pdev = pdev, | |
6019 | }; | |
6020 | struct nfs4_getdeviceinfo_res res = { | |
6021 | .pdev = pdev, | |
6022 | }; | |
6023 | struct rpc_message msg = { | |
6024 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
6025 | .rpc_argp = &args, | |
6026 | .rpc_resp = &res, | |
6027 | }; | |
6028 | int status; | |
6029 | ||
6030 | dprintk("--> %s\n", __func__); | |
7c513058 | 6031 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
6032 | dprintk("<-- %s status=%d\n", __func__, status); |
6033 | ||
6034 | return status; | |
6035 | } | |
6036 | ||
6037 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6038 | { | |
6039 | struct nfs4_exception exception = { }; | |
6040 | int err; | |
6041 | ||
6042 | do { | |
6043 | err = nfs4_handle_exception(server, | |
6044 | _nfs4_proc_getdeviceinfo(server, pdev), | |
6045 | &exception); | |
6046 | } while (exception.retry); | |
6047 | return err; | |
6048 | } | |
6049 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
6050 | ||
863a3c6c AA |
6051 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
6052 | { | |
6053 | struct nfs4_layoutcommit_data *data = calldata; | |
6054 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6055 | ||
6056 | if (nfs4_setup_sequence(server, &data->args.seq_args, | |
9d12b216 | 6057 | &data->res.seq_res, task)) |
863a3c6c AA |
6058 | return; |
6059 | rpc_call_start(task); | |
6060 | } | |
6061 | ||
6062 | static void | |
6063 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
6064 | { | |
6065 | struct nfs4_layoutcommit_data *data = calldata; | |
6066 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6067 | ||
6068 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
6069 | return; | |
6070 | ||
6071 | switch (task->tk_status) { /* Just ignore these failures */ | |
6072 | case NFS4ERR_DELEG_REVOKED: /* layout was recalled */ | |
6073 | case NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
6074 | case NFS4ERR_BADLAYOUT: /* no layout */ | |
6075 | case NFS4ERR_GRACE: /* loca_recalim always false */ | |
6076 | task->tk_status = 0; | |
6077 | } | |
6078 | ||
6079 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 6080 | rpc_restart_call_prepare(task); |
863a3c6c AA |
6081 | return; |
6082 | } | |
6083 | ||
6084 | if (task->tk_status == 0) | |
6085 | nfs_post_op_update_inode_force_wcc(data->args.inode, | |
6086 | data->res.fattr); | |
6087 | } | |
6088 | ||
6089 | static void nfs4_layoutcommit_release(void *calldata) | |
6090 | { | |
6091 | struct nfs4_layoutcommit_data *data = calldata; | |
a9bae566 | 6092 | struct pnfs_layout_segment *lseg, *tmp; |
92407e75 | 6093 | unsigned long *bitlock = &NFS_I(data->args.inode)->flags; |
863a3c6c | 6094 | |
db29c089 | 6095 | pnfs_cleanup_layoutcommit(data); |
863a3c6c | 6096 | /* Matched by references in pnfs_set_layoutcommit */ |
a9bae566 PT |
6097 | list_for_each_entry_safe(lseg, tmp, &data->lseg_list, pls_lc_list) { |
6098 | list_del_init(&lseg->pls_lc_list); | |
6099 | if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT, | |
6100 | &lseg->pls_flags)) | |
6101 | put_lseg(lseg); | |
6102 | } | |
92407e75 PT |
6103 | |
6104 | clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING, bitlock); | |
6105 | smp_mb__after_clear_bit(); | |
6106 | wake_up_bit(bitlock, NFS_INO_LAYOUTCOMMITTING); | |
6107 | ||
863a3c6c AA |
6108 | put_rpccred(data->cred); |
6109 | kfree(data); | |
6110 | } | |
6111 | ||
6112 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
6113 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
6114 | .rpc_call_done = nfs4_layoutcommit_done, | |
6115 | .rpc_release = nfs4_layoutcommit_release, | |
6116 | }; | |
6117 | ||
6118 | int | |
ef311537 | 6119 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
6120 | { |
6121 | struct rpc_message msg = { | |
6122 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
6123 | .rpc_argp = &data->args, | |
6124 | .rpc_resp = &data->res, | |
6125 | .rpc_cred = data->cred, | |
6126 | }; | |
6127 | struct rpc_task_setup task_setup_data = { | |
6128 | .task = &data->task, | |
6129 | .rpc_client = NFS_CLIENT(data->args.inode), | |
6130 | .rpc_message = &msg, | |
6131 | .callback_ops = &nfs4_layoutcommit_ops, | |
6132 | .callback_data = data, | |
6133 | .flags = RPC_TASK_ASYNC, | |
6134 | }; | |
6135 | struct rpc_task *task; | |
6136 | int status = 0; | |
6137 | ||
6138 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
6139 | "lbw: %llu inode %lu\n", | |
6140 | data->task.tk_pid, sync, | |
6141 | data->args.lastbytewritten, | |
6142 | data->args.inode->i_ino); | |
6143 | ||
9d12b216 | 6144 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
6145 | task = rpc_run_task(&task_setup_data); |
6146 | if (IS_ERR(task)) | |
6147 | return PTR_ERR(task); | |
ef311537 | 6148 | if (sync == false) |
863a3c6c AA |
6149 | goto out; |
6150 | status = nfs4_wait_for_completion_rpc_task(task); | |
6151 | if (status != 0) | |
6152 | goto out; | |
6153 | status = task->tk_status; | |
6154 | out: | |
6155 | dprintk("%s: status %d\n", __func__, status); | |
6156 | rpc_put_task(task); | |
6157 | return status; | |
6158 | } | |
fca78d6d BS |
6159 | |
6160 | static int | |
6161 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6162 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6163 | { | |
6164 | struct nfs41_secinfo_no_name_args args = { | |
6165 | .style = SECINFO_STYLE_CURRENT_FH, | |
6166 | }; | |
6167 | struct nfs4_secinfo_res res = { | |
6168 | .flavors = flavors, | |
6169 | }; | |
6170 | struct rpc_message msg = { | |
6171 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
6172 | .rpc_argp = &args, | |
6173 | .rpc_resp = &res, | |
6174 | }; | |
6175 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); | |
6176 | } | |
6177 | ||
6178 | static int | |
6179 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6180 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6181 | { | |
6182 | struct nfs4_exception exception = { }; | |
6183 | int err; | |
6184 | do { | |
6185 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6186 | switch (err) { | |
6187 | case 0: | |
6188 | case -NFS4ERR_WRONGSEC: | |
6189 | case -NFS4ERR_NOTSUPP: | |
6190 | break; | |
6191 | default: | |
6192 | err = nfs4_handle_exception(server, err, &exception); | |
6193 | } | |
6194 | } while (exception.retry); | |
6195 | return err; | |
6196 | } | |
6197 | ||
6198 | static int | |
6199 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
6200 | struct nfs_fsinfo *info) | |
6201 | { | |
6202 | int err; | |
6203 | struct page *page; | |
6204 | rpc_authflavor_t flavor; | |
6205 | struct nfs4_secinfo_flavors *flavors; | |
6206 | ||
6207 | page = alloc_page(GFP_KERNEL); | |
6208 | if (!page) { | |
6209 | err = -ENOMEM; | |
6210 | goto out; | |
6211 | } | |
6212 | ||
6213 | flavors = page_address(page); | |
6214 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6215 | ||
6216 | /* | |
6217 | * Fall back on "guess and check" method if | |
6218 | * the server doesn't support SECINFO_NO_NAME | |
6219 | */ | |
6220 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
6221 | err = nfs4_find_root_sec(server, fhandle, info); | |
6222 | goto out_freepage; | |
6223 | } | |
6224 | if (err) | |
6225 | goto out_freepage; | |
6226 | ||
6227 | flavor = nfs_find_best_sec(flavors); | |
6228 | if (err == 0) | |
6229 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
6230 | ||
6231 | out_freepage: | |
6232 | put_page(page); | |
6233 | if (err == -EACCES) | |
6234 | return -EPERM; | |
6235 | out: | |
6236 | return err; | |
6237 | } | |
1cab0652 BS |
6238 | |
6239 | static int _nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) | |
7d974794 | 6240 | { |
1cab0652 | 6241 | int status; |
7d974794 | 6242 | struct nfs41_test_stateid_args args = { |
1cab0652 | 6243 | .stateid = stateid, |
7d974794 BS |
6244 | }; |
6245 | struct nfs41_test_stateid_res res; | |
6246 | struct rpc_message msg = { | |
6247 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
6248 | .rpc_argp = &args, | |
6249 | .rpc_resp = &res, | |
6250 | }; | |
1cab0652 | 6251 | |
9d12b216 | 6252 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
1cab0652 BS |
6253 | status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
6254 | ||
6255 | if (status == NFS_OK) | |
6256 | return res.status; | |
6257 | return status; | |
7d974794 BS |
6258 | } |
6259 | ||
1cab0652 | 6260 | static int nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
7d974794 BS |
6261 | { |
6262 | struct nfs4_exception exception = { }; | |
6263 | int err; | |
6264 | do { | |
6265 | err = nfs4_handle_exception(server, | |
1cab0652 | 6266 | _nfs41_test_stateid(server, stateid), |
7d974794 BS |
6267 | &exception); |
6268 | } while (exception.retry); | |
6269 | return err; | |
6270 | } | |
9aeda35f | 6271 | |
1cab0652 | 6272 | static int _nfs4_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f | 6273 | { |
9aeda35f | 6274 | struct nfs41_free_stateid_args args = { |
1cab0652 | 6275 | .stateid = stateid, |
9aeda35f BS |
6276 | }; |
6277 | struct nfs41_free_stateid_res res; | |
6278 | struct rpc_message msg = { | |
6279 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
6280 | .rpc_argp = &args, | |
6281 | .rpc_resp = &res, | |
6282 | }; | |
6283 | ||
9d12b216 TM |
6284 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
6285 | return nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); | |
9aeda35f BS |
6286 | } |
6287 | ||
1cab0652 | 6288 | static int nfs41_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f BS |
6289 | { |
6290 | struct nfs4_exception exception = { }; | |
6291 | int err; | |
6292 | do { | |
6293 | err = nfs4_handle_exception(server, | |
1cab0652 | 6294 | _nfs4_free_stateid(server, stateid), |
9aeda35f BS |
6295 | &exception); |
6296 | } while (exception.retry); | |
6297 | return err; | |
6298 | } | |
36281caa TM |
6299 | |
6300 | static bool nfs41_match_stateid(const nfs4_stateid *s1, | |
6301 | const nfs4_stateid *s2) | |
6302 | { | |
2d2f24ad | 6303 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
6304 | return false; |
6305 | ||
2d2f24ad | 6306 | if (s1->seqid == s2->seqid) |
36281caa | 6307 | return true; |
2d2f24ad | 6308 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
6309 | return true; |
6310 | ||
6311 | return false; | |
6312 | } | |
6313 | ||
557134a3 AA |
6314 | #endif /* CONFIG_NFS_V4_1 */ |
6315 | ||
36281caa TM |
6316 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
6317 | const nfs4_stateid *s2) | |
6318 | { | |
f597c537 | 6319 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
6320 | } |
6321 | ||
6322 | ||
17280175 | 6323 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 6324 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 6325 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
6326 | .recover_open = nfs4_open_reclaim, |
6327 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 6328 | .establish_clid = nfs4_init_clientid, |
90a16617 | 6329 | .get_clid_cred = nfs4_get_setclientid_cred, |
1da177e4 LT |
6330 | }; |
6331 | ||
591d71cb | 6332 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 6333 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
6334 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
6335 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
6336 | .recover_open = nfs4_open_reclaim, | |
6337 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 6338 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6339 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 6340 | .reclaim_complete = nfs41_proc_reclaim_complete, |
591d71cb AA |
6341 | }; |
6342 | #endif /* CONFIG_NFS_V4_1 */ | |
6343 | ||
17280175 | 6344 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
6345 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
6346 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
6347 | .recover_open = nfs4_open_expired, | |
6348 | .recover_lock = nfs4_lock_expired, | |
6349 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 6350 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
6351 | }; |
6352 | ||
6353 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 6354 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 6355 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 6356 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
6357 | .recover_open = nfs41_open_expired, |
6358 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 6359 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6360 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 6361 | }; |
591d71cb | 6362 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 6363 | |
17280175 | 6364 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 6365 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 6366 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 6367 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
6368 | }; |
6369 | ||
6370 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 6371 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 6372 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 6373 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 6374 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
6375 | }; |
6376 | #endif | |
6377 | ||
97dc1359 TM |
6378 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
6379 | .minor_version = 0, | |
6380 | .call_sync = _nfs4_call_sync, | |
36281caa | 6381 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 6382 | .find_root_sec = nfs4_find_root_sec, |
c48f4f35 TM |
6383 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
6384 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
6385 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
6386 | }; |
6387 | ||
6388 | #if defined(CONFIG_NFS_V4_1) | |
6389 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
6390 | .minor_version = 1, | |
6391 | .call_sync = _nfs4_call_sync_session, | |
36281caa | 6392 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 6393 | .find_root_sec = nfs41_find_root_sec, |
c48f4f35 TM |
6394 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
6395 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
6396 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
6397 | }; |
6398 | #endif | |
6399 | ||
97dc1359 TM |
6400 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
6401 | [0] = &nfs_v4_0_minor_ops, | |
6402 | #if defined(CONFIG_NFS_V4_1) | |
6403 | [1] = &nfs_v4_1_minor_ops, | |
6404 | #endif | |
6405 | }; | |
6406 | ||
92e1d5be | 6407 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
6408 | .permission = nfs_permission, |
6409 | .getattr = nfs_getattr, | |
6410 | .setattr = nfs_setattr, | |
64c2ce8b AK |
6411 | .getxattr = generic_getxattr, |
6412 | .setxattr = generic_setxattr, | |
6413 | .listxattr = generic_listxattr, | |
6414 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
6415 | }; |
6416 | ||
509de811 | 6417 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
6418 | .version = 4, /* protocol version */ |
6419 | .dentry_ops = &nfs4_dentry_operations, | |
6420 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 6421 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 6422 | .file_ops = &nfs4_file_operations, |
1da177e4 LT |
6423 | .getroot = nfs4_proc_get_root, |
6424 | .getattr = nfs4_proc_getattr, | |
6425 | .setattr = nfs4_proc_setattr, | |
6426 | .lookup = nfs4_proc_lookup, | |
6427 | .access = nfs4_proc_access, | |
6428 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
6429 | .create = nfs4_proc_create, |
6430 | .remove = nfs4_proc_remove, | |
6431 | .unlink_setup = nfs4_proc_unlink_setup, | |
6432 | .unlink_done = nfs4_proc_unlink_done, | |
6433 | .rename = nfs4_proc_rename, | |
d3d4152a JL |
6434 | .rename_setup = nfs4_proc_rename_setup, |
6435 | .rename_done = nfs4_proc_rename_done, | |
1da177e4 LT |
6436 | .link = nfs4_proc_link, |
6437 | .symlink = nfs4_proc_symlink, | |
6438 | .mkdir = nfs4_proc_mkdir, | |
6439 | .rmdir = nfs4_proc_remove, | |
6440 | .readdir = nfs4_proc_readdir, | |
6441 | .mknod = nfs4_proc_mknod, | |
6442 | .statfs = nfs4_proc_statfs, | |
6443 | .fsinfo = nfs4_proc_fsinfo, | |
6444 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 6445 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
6446 | .decode_dirent = nfs4_decode_dirent, |
6447 | .read_setup = nfs4_proc_read_setup, | |
ec06c096 | 6448 | .read_done = nfs4_read_done, |
1da177e4 | 6449 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 6450 | .write_done = nfs4_write_done, |
1da177e4 | 6451 | .commit_setup = nfs4_proc_commit_setup, |
788e7a89 | 6452 | .commit_done = nfs4_commit_done, |
1da177e4 | 6453 | .lock = nfs4_proc_lock, |
e50a1c2e | 6454 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 6455 | .close_context = nfs4_close_context, |
2b484297 | 6456 | .open_context = nfs4_atomic_open, |
45a52a02 | 6457 | .init_client = nfs4_init_client, |
5a5ea0d4 | 6458 | .secinfo = nfs4_proc_secinfo, |
1da177e4 LT |
6459 | }; |
6460 | ||
64c2ce8b AK |
6461 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
6462 | .prefix = XATTR_NAME_NFSV4_ACL, | |
6463 | .list = nfs4_xattr_list_nfs4_acl, | |
6464 | .get = nfs4_xattr_get_nfs4_acl, | |
6465 | .set = nfs4_xattr_set_nfs4_acl, | |
6466 | }; | |
6467 | ||
6468 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
6469 | &nfs4_xattr_nfs4_acl_handler, | |
6470 | NULL | |
6471 | }; | |
6472 | ||
ef159e91 TM |
6473 | module_param(max_session_slots, ushort, 0644); |
6474 | MODULE_PARM_DESC(max_session_slots, "Maximum number of outstanding NFSv4.1 " | |
6475 | "requests the client will negotiate"); | |
6476 | ||
1da177e4 LT |
6477 | /* |
6478 | * Local variables: | |
6479 | * c-basic-offset: 8 | |
6480 | * End: | |
6481 | */ |