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" |
f092075d | 67 | #include "netns.h" |
1da177e4 LT |
68 | |
69 | #define NFSDBG_FACILITY NFSDBG_PROC | |
70 | ||
2066fe89 | 71 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
72 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
73 | ||
a78cb57a TM |
74 | #define NFS4_MAX_LOOP_ON_RECOVER (10) |
75 | ||
ef159e91 TM |
76 | static unsigned short max_session_slots = NFS4_DEF_SLOT_TABLE_SIZE; |
77 | ||
cdd4e68b | 78 | struct nfs4_opendata; |
864472e9 | 79 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
b257957e | 80 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data); |
1da177e4 | 81 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
9e33bed5 | 82 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *); |
81934ddb | 83 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); |
bae36241 | 84 | static int nfs4_proc_getattr(struct nfs_server *, struct nfs_fh *, struct nfs_fattr *); |
9936781d | 85 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr); |
0ab64e0e TM |
86 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
87 | struct nfs_fattr *fattr, struct iattr *sattr, | |
88 | struct nfs4_state *state); | |
f062eb6c | 89 | #ifdef CONFIG_NFS_V4_1 |
1cab0652 BS |
90 | static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *); |
91 | static int nfs41_free_stateid(struct nfs_server *, nfs4_stateid *); | |
f062eb6c | 92 | #endif |
1da177e4 | 93 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 94 | static int nfs4_map_errors(int err) |
1da177e4 | 95 | { |
52567b03 TM |
96 | if (err >= -1000) |
97 | return err; | |
98 | switch (err) { | |
99 | case -NFS4ERR_RESOURCE: | |
100 | return -EREMOTEIO; | |
7ebb9315 BS |
101 | case -NFS4ERR_WRONGSEC: |
102 | return -EPERM; | |
3ddeb7c5 TM |
103 | case -NFS4ERR_BADOWNER: |
104 | case -NFS4ERR_BADNAME: | |
105 | return -EINVAL; | |
52567b03 | 106 | default: |
1da177e4 | 107 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 108 | __func__, -err); |
52567b03 | 109 | break; |
1da177e4 | 110 | } |
52567b03 | 111 | return -EIO; |
1da177e4 LT |
112 | } |
113 | ||
114 | /* | |
115 | * This is our standard bitmap for GETATTR requests. | |
116 | */ | |
117 | const u32 nfs4_fattr_bitmap[2] = { | |
118 | FATTR4_WORD0_TYPE | |
119 | | FATTR4_WORD0_CHANGE | |
120 | | FATTR4_WORD0_SIZE | |
121 | | FATTR4_WORD0_FSID | |
122 | | FATTR4_WORD0_FILEID, | |
123 | FATTR4_WORD1_MODE | |
124 | | FATTR4_WORD1_NUMLINKS | |
125 | | FATTR4_WORD1_OWNER | |
126 | | FATTR4_WORD1_OWNER_GROUP | |
127 | | FATTR4_WORD1_RAWDEV | |
128 | | FATTR4_WORD1_SPACE_USED | |
129 | | FATTR4_WORD1_TIME_ACCESS | |
130 | | FATTR4_WORD1_TIME_METADATA | |
131 | | FATTR4_WORD1_TIME_MODIFY | |
132 | }; | |
133 | ||
134 | const u32 nfs4_statfs_bitmap[2] = { | |
135 | FATTR4_WORD0_FILES_AVAIL | |
136 | | FATTR4_WORD0_FILES_FREE | |
137 | | FATTR4_WORD0_FILES_TOTAL, | |
138 | FATTR4_WORD1_SPACE_AVAIL | |
139 | | FATTR4_WORD1_SPACE_FREE | |
140 | | FATTR4_WORD1_SPACE_TOTAL | |
141 | }; | |
142 | ||
4ce79717 | 143 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
144 | FATTR4_WORD0_MAXLINK |
145 | | FATTR4_WORD0_MAXNAME, | |
146 | 0 | |
147 | }; | |
148 | ||
dae100c2 | 149 | const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE |
1da177e4 LT |
150 | | FATTR4_WORD0_MAXREAD |
151 | | FATTR4_WORD0_MAXWRITE | |
152 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 153 | FATTR4_WORD1_TIME_DELTA |
dae100c2 FI |
154 | | FATTR4_WORD1_FS_LAYOUT_TYPES, |
155 | FATTR4_WORD2_LAYOUT_BLKSIZE | |
1da177e4 LT |
156 | }; |
157 | ||
830b8e33 MN |
158 | const u32 nfs4_fs_locations_bitmap[2] = { |
159 | FATTR4_WORD0_TYPE | |
160 | | FATTR4_WORD0_CHANGE | |
161 | | FATTR4_WORD0_SIZE | |
162 | | FATTR4_WORD0_FSID | |
163 | | FATTR4_WORD0_FILEID | |
164 | | FATTR4_WORD0_FS_LOCATIONS, | |
165 | FATTR4_WORD1_MODE | |
166 | | FATTR4_WORD1_NUMLINKS | |
167 | | FATTR4_WORD1_OWNER | |
168 | | FATTR4_WORD1_OWNER_GROUP | |
169 | | FATTR4_WORD1_RAWDEV | |
170 | | FATTR4_WORD1_SPACE_USED | |
171 | | FATTR4_WORD1_TIME_ACCESS | |
172 | | FATTR4_WORD1_TIME_METADATA | |
173 | | FATTR4_WORD1_TIME_MODIFY | |
174 | | FATTR4_WORD1_MOUNTED_ON_FILEID | |
175 | }; | |
176 | ||
bc4785cd | 177 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
178 | struct nfs4_readdir_arg *readdir) |
179 | { | |
0dbb4c67 | 180 | __be32 *start, *p; |
1da177e4 LT |
181 | |
182 | BUG_ON(readdir->count < 80); | |
183 | if (cookie > 2) { | |
b7ef1956 | 184 | readdir->cookie = cookie; |
1da177e4 LT |
185 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
186 | return; | |
187 | } | |
188 | ||
189 | readdir->cookie = 0; | |
190 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
191 | if (cookie == 2) | |
192 | return; | |
193 | ||
194 | /* | |
195 | * NFSv4 servers do not return entries for '.' and '..' | |
196 | * Therefore, we fake these entries here. We let '.' | |
197 | * have cookie 0 and '..' have cookie 1. Note that | |
198 | * when talking to the server, we always send cookie 0 | |
199 | * instead of 1 or 2. | |
200 | */ | |
2b86ce2d | 201 | start = p = kmap_atomic(*readdir->pages); |
1da177e4 LT |
202 | |
203 | if (cookie == 0) { | |
204 | *p++ = xdr_one; /* next */ | |
205 | *p++ = xdr_zero; /* cookie, first word */ | |
206 | *p++ = xdr_one; /* cookie, second word */ | |
207 | *p++ = xdr_one; /* entry len */ | |
208 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
209 | p++; | |
210 | *p++ = xdr_one; /* bitmap length */ | |
211 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
212 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 213 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
214 | } |
215 | ||
216 | *p++ = xdr_one; /* next */ | |
217 | *p++ = xdr_zero; /* cookie, first word */ | |
218 | *p++ = xdr_two; /* cookie, second word */ | |
219 | *p++ = xdr_two; /* entry len */ | |
220 | memcpy(p, "..\0\0", 4); /* entry */ | |
221 | p++; | |
222 | *p++ = xdr_one; /* bitmap length */ | |
223 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
224 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 225 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
226 | |
227 | readdir->pgbase = (char *)p - (char *)start; | |
228 | readdir->count -= readdir->pgbase; | |
2b86ce2d | 229 | kunmap_atomic(start); |
1da177e4 LT |
230 | } |
231 | ||
65de872e TM |
232 | static int nfs4_wait_clnt_recover(struct nfs_client *clp) |
233 | { | |
234 | int res; | |
235 | ||
236 | might_sleep(); | |
237 | ||
e005e804 | 238 | res = wait_on_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING, |
72cb77f4 | 239 | nfs_wait_bit_killable, TASK_KILLABLE); |
65de872e TM |
240 | return res; |
241 | } | |
242 | ||
243 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) | |
244 | { | |
245 | int res = 0; | |
246 | ||
247 | might_sleep(); | |
248 | ||
249 | if (*timeout <= 0) | |
250 | *timeout = NFS4_POLL_RETRY_MIN; | |
251 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
252 | *timeout = NFS4_POLL_RETRY_MAX; | |
d310310c | 253 | freezable_schedule_timeout_killable(*timeout); |
65de872e TM |
254 | if (fatal_signal_pending(current)) |
255 | res = -ERESTARTSYS; | |
256 | *timeout <<= 1; | |
257 | return res; | |
258 | } | |
259 | ||
260 | /* This is the error handling routine for processes that are allowed | |
261 | * to sleep. | |
262 | */ | |
b064eca2 | 263 | static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
65de872e TM |
264 | { |
265 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 266 | struct nfs4_state *state = exception->state; |
3114ea7a | 267 | struct inode *inode = exception->inode; |
65de872e TM |
268 | int ret = errorcode; |
269 | ||
270 | exception->retry = 0; | |
271 | switch(errorcode) { | |
272 | case 0: | |
273 | return 0; | |
3114ea7a | 274 | case -NFS4ERR_OPENMODE: |
14977489 | 275 | if (inode && nfs_have_delegation(inode, FMODE_READ)) { |
3114ea7a TM |
276 | nfs_inode_return_delegation(inode); |
277 | exception->retry = 1; | |
278 | return 0; | |
279 | } | |
280 | if (state == NULL) | |
281 | break; | |
282 | nfs4_schedule_stateid_recovery(server, state); | |
283 | goto wait_on_recovery; | |
a1d0b5ee | 284 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
285 | case -NFS4ERR_ADMIN_REVOKED: |
286 | case -NFS4ERR_BAD_STATEID: | |
9e33bed5 TM |
287 | if (state == NULL) |
288 | break; | |
14977489 | 289 | nfs_remove_bad_delegation(state->inode); |
0400a6b0 TM |
290 | nfs4_schedule_stateid_recovery(server, state); |
291 | goto wait_on_recovery; | |
0ced63d1 TM |
292 | case -NFS4ERR_EXPIRED: |
293 | if (state != NULL) | |
294 | nfs4_schedule_stateid_recovery(server, state); | |
65de872e | 295 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 296 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
297 | nfs4_schedule_lease_recovery(clp); |
298 | goto wait_on_recovery; | |
03391693 | 299 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
300 | case -NFS4ERR_BADSESSION: |
301 | case -NFS4ERR_BADSLOT: | |
302 | case -NFS4ERR_BAD_HIGH_SLOT: | |
303 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
304 | case -NFS4ERR_DEADSESSION: | |
305 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
306 | case -NFS4ERR_SEQ_MISORDERED: | |
307 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
308 | errorcode); | |
0400a6b0 | 309 | nfs4_schedule_session_recovery(clp->cl_session); |
4745e315 | 310 | exception->retry = 1; |
b9179237 | 311 | break; |
03391693 | 312 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 313 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
314 | if (exception->timeout > HZ) { |
315 | /* We have retried a decent amount, time to | |
316 | * fail | |
317 | */ | |
318 | ret = -EBUSY; | |
319 | break; | |
320 | } | |
65de872e TM |
321 | case -NFS4ERR_GRACE: |
322 | case -NFS4ERR_DELAY: | |
2c643488 | 323 | case -EKEYEXPIRED: |
65de872e TM |
324 | ret = nfs4_delay(server->client, &exception->timeout); |
325 | if (ret != 0) | |
326 | break; | |
a8a4ae3a | 327 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
328 | case -NFS4ERR_OLD_STATEID: |
329 | exception->retry = 1; | |
b064eca2 TM |
330 | break; |
331 | case -NFS4ERR_BADOWNER: | |
332 | /* The following works around a Linux server bug! */ | |
333 | case -NFS4ERR_BADNAME: | |
334 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
335 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
336 | exception->retry = 1; | |
337 | printk(KERN_WARNING "NFS: v4 server %s " | |
338 | "does not accept raw " | |
339 | "uid/gids. " | |
340 | "Reenabling the idmapper.\n", | |
341 | server->nfs_client->cl_hostname); | |
342 | } | |
65de872e TM |
343 | } |
344 | /* We failed to handle the error */ | |
345 | return nfs4_map_errors(ret); | |
0400a6b0 | 346 | wait_on_recovery: |
a2c0b9e2 TM |
347 | ret = nfs4_wait_clnt_recover(clp); |
348 | if (ret == 0) | |
349 | exception->retry = 1; | |
350 | return ret; | |
65de872e TM |
351 | } |
352 | ||
353 | ||
452e9352 | 354 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 355 | { |
1da177e4 LT |
356 | spin_lock(&clp->cl_lock); |
357 | if (time_before(clp->cl_last_renewal,timestamp)) | |
358 | clp->cl_last_renewal = timestamp; | |
359 | spin_unlock(&clp->cl_lock); | |
360 | } | |
361 | ||
452e9352 TM |
362 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
363 | { | |
364 | do_renew_lease(server->nfs_client, timestamp); | |
365 | } | |
366 | ||
cccef3b9 AA |
367 | #if defined(CONFIG_NFS_V4_1) |
368 | ||
e2c4ab3c AA |
369 | /* |
370 | * nfs4_free_slot - free a slot and efficiently update slot table. | |
371 | * | |
372 | * freeing a slot is trivially done by clearing its respective bit | |
373 | * in the bitmap. | |
374 | * If the freed slotid equals highest_used_slotid we want to update it | |
375 | * so that the server would be able to size down the slot table if needed, | |
376 | * otherwise we know that the highest_used_slotid is still in use. | |
377 | * When updating highest_used_slotid there may be "holes" in the bitmap | |
378 | * so we need to scan down from highest_used_slotid to 0 looking for the now | |
379 | * highest slotid in use. | |
45d43c29 | 380 | * If none found, highest_used_slotid is set to NFS4_NO_SLOT. |
35dc1d74 TM |
381 | * |
382 | * Must be called while holding tbl->slot_tbl_lock | |
e2c4ab3c AA |
383 | */ |
384 | static void | |
45d43c29 | 385 | nfs4_free_slot(struct nfs4_slot_table *tbl, u32 slotid) |
e2c4ab3c | 386 | { |
45d43c29 | 387 | BUG_ON(slotid >= NFS4_MAX_SLOT_TABLE); |
e2c4ab3c AA |
388 | /* clear used bit in bitmap */ |
389 | __clear_bit(slotid, tbl->used_slots); | |
390 | ||
391 | /* update highest_used_slotid when it is freed */ | |
392 | if (slotid == tbl->highest_used_slotid) { | |
393 | slotid = find_last_bit(tbl->used_slots, tbl->max_slots); | |
bcb56164 | 394 | if (slotid < tbl->max_slots) |
e2c4ab3c AA |
395 | tbl->highest_used_slotid = slotid; |
396 | else | |
45d43c29 | 397 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
e2c4ab3c | 398 | } |
45d43c29 TM |
399 | dprintk("%s: slotid %u highest_used_slotid %d\n", __func__, |
400 | slotid, tbl->highest_used_slotid); | |
e2c4ab3c AA |
401 | } |
402 | ||
961a828d TM |
403 | bool nfs4_set_task_privileged(struct rpc_task *task, void *dummy) |
404 | { | |
405 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
406 | return true; | |
e2c4ab3c AA |
407 | } |
408 | ||
3bfb0fc5 | 409 | /* |
42acd021 | 410 | * Signal state manager thread if session fore channel is drained |
3bfb0fc5 | 411 | */ |
42acd021 | 412 | static void nfs4_check_drain_fc_complete(struct nfs4_session *ses) |
3bfb0fc5 | 413 | { |
a2118c33 | 414 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state)) { |
961a828d TM |
415 | rpc_wake_up_first(&ses->fc_slot_table.slot_tbl_waitq, |
416 | nfs4_set_task_privileged, NULL); | |
3bfb0fc5 AB |
417 | return; |
418 | } | |
419 | ||
45d43c29 | 420 | if (ses->fc_slot_table.highest_used_slotid != NFS4_NO_SLOT) |
3bfb0fc5 AB |
421 | return; |
422 | ||
42acd021 AA |
423 | dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__); |
424 | complete(&ses->fc_slot_table.complete); | |
425 | } | |
426 | ||
427 | /* | |
428 | * Signal state manager thread if session back channel is drained | |
429 | */ | |
430 | void nfs4_check_drain_bc_complete(struct nfs4_session *ses) | |
431 | { | |
432 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state) || | |
45d43c29 | 433 | ses->bc_slot_table.highest_used_slotid != NFS4_NO_SLOT) |
42acd021 AA |
434 | return; |
435 | dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__); | |
436 | complete(&ses->bc_slot_table.complete); | |
3bfb0fc5 AB |
437 | } |
438 | ||
d185a334 | 439 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 AA |
440 | { |
441 | struct nfs4_slot_table *tbl; | |
442 | ||
d185a334 | 443 | tbl = &res->sr_session->fc_slot_table; |
dfb4f309 | 444 | if (!res->sr_slot) { |
13615871 AA |
445 | /* just wake up the next guy waiting since |
446 | * we may have not consumed a slot after all */ | |
691daf3b | 447 | dprintk("%s: No slot\n", __func__); |
35dc1d74 | 448 | return; |
13615871 | 449 | } |
ea028ac9 | 450 | |
35dc1d74 | 451 | spin_lock(&tbl->slot_tbl_lock); |
aabd0b40 | 452 | nfs4_free_slot(tbl, res->sr_slot - tbl->slots); |
42acd021 | 453 | nfs4_check_drain_fc_complete(res->sr_session); |
35dc1d74 | 454 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 455 | res->sr_slot = NULL; |
13615871 AA |
456 | } |
457 | ||
14516c3a | 458 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c AA |
459 | { |
460 | unsigned long timestamp; | |
14516c3a | 461 | struct nfs_client *clp; |
b0df806c AA |
462 | |
463 | /* | |
464 | * sr_status remains 1 if an RPC level error occurred. The server | |
465 | * may or may not have processed the sequence operation.. | |
466 | * Proceed as if the server received and processed the sequence | |
467 | * operation. | |
468 | */ | |
469 | if (res->sr_status == 1) | |
470 | res->sr_status = NFS_OK; | |
471 | ||
468f8613 BS |
472 | /* don't increment the sequence number if the task wasn't sent */ |
473 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
474 | goto out; |
475 | ||
691daf3b | 476 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
477 | switch (res->sr_status) { |
478 | case 0: | |
b0df806c | 479 | /* Update the slot's sequence and clientid lease timer */ |
dfb4f309 | 480 | ++res->sr_slot->seq_nr; |
b0df806c | 481 | timestamp = res->sr_renewal_time; |
14516c3a | 482 | clp = res->sr_session->clp; |
452e9352 | 483 | do_renew_lease(clp, timestamp); |
0629e370 | 484 | /* Check sequence flags */ |
b4410c2f TM |
485 | if (res->sr_status_flags != 0) |
486 | nfs4_schedule_lease_recovery(clp); | |
14516c3a TM |
487 | break; |
488 | case -NFS4ERR_DELAY: | |
489 | /* The server detected a resend of the RPC call and | |
490 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
491 | * of RFC5661. | |
492 | */ | |
12364a4f | 493 | dprintk("%s: slot=%td seq=%d: Operation in progress\n", |
dfb4f309 BH |
494 | __func__, |
495 | res->sr_slot - res->sr_session->fc_slot_table.slots, | |
496 | res->sr_slot->seq_nr); | |
14516c3a TM |
497 | goto out_retry; |
498 | default: | |
499 | /* Just update the slot sequence no. */ | |
dfb4f309 | 500 | ++res->sr_slot->seq_nr; |
b0df806c AA |
501 | } |
502 | out: | |
503 | /* The session may be reset by one of the error handlers. */ | |
504 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 505 | nfs41_sequence_free_slot(res); |
14516c3a TM |
506 | return 1; |
507 | out_retry: | |
d05dd4e9 | 508 | if (!rpc_restart_call(task)) |
14516c3a TM |
509 | goto out; |
510 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
511 | return 0; | |
b0df806c AA |
512 | } |
513 | ||
14516c3a TM |
514 | static int nfs4_sequence_done(struct rpc_task *task, |
515 | struct nfs4_sequence_res *res) | |
df896455 | 516 | { |
14516c3a TM |
517 | if (res->sr_session == NULL) |
518 | return 1; | |
519 | return nfs41_sequence_done(task, res); | |
df896455 TM |
520 | } |
521 | ||
510b8175 BH |
522 | /* |
523 | * nfs4_find_slot - efficiently look for a free slot | |
524 | * | |
525 | * nfs4_find_slot looks for an unset bit in the used_slots bitmap. | |
526 | * If found, we mark the slot as used, update the highest_used_slotid, | |
527 | * and respectively set up the sequence operation args. | |
45d43c29 | 528 | * The slot number is returned if found, or NFS4_NO_SLOT otherwise. |
fbcd4abc AA |
529 | * |
530 | * Note: must be called with under the slot_tbl_lock. | |
510b8175 | 531 | */ |
45d43c29 | 532 | static u32 |
40ead580 | 533 | nfs4_find_slot(struct nfs4_slot_table *tbl) |
510b8175 | 534 | { |
45d43c29 TM |
535 | u32 slotid; |
536 | u32 ret_id = NFS4_NO_SLOT; | |
510b8175 | 537 | |
45d43c29 | 538 | dprintk("--> %s used_slots=%04lx highest_used=%u max_slots=%u\n", |
510b8175 BH |
539 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, |
540 | tbl->max_slots); | |
541 | slotid = find_first_zero_bit(tbl->used_slots, tbl->max_slots); | |
542 | if (slotid >= tbl->max_slots) | |
543 | goto out; | |
544 | __set_bit(slotid, tbl->used_slots); | |
45d43c29 TM |
545 | if (slotid > tbl->highest_used_slotid || |
546 | tbl->highest_used_slotid == NFS4_NO_SLOT) | |
510b8175 BH |
547 | tbl->highest_used_slotid = slotid; |
548 | ret_id = slotid; | |
549 | out: | |
550 | dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n", | |
551 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, ret_id); | |
510b8175 BH |
552 | return ret_id; |
553 | } | |
554 | ||
9d12b216 TM |
555 | static void nfs41_init_sequence(struct nfs4_sequence_args *args, |
556 | struct nfs4_sequence_res *res, int cache_reply) | |
557 | { | |
558 | args->sa_session = NULL; | |
559 | args->sa_cache_this = 0; | |
560 | if (cache_reply) | |
561 | args->sa_cache_this = 1; | |
562 | res->sr_session = NULL; | |
563 | res->sr_slot = NULL; | |
564 | } | |
565 | ||
dc70d7b3 | 566 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
567 | struct nfs4_sequence_args *args, |
568 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
569 | struct rpc_task *task) |
570 | { | |
fbcd4abc AA |
571 | struct nfs4_slot *slot; |
572 | struct nfs4_slot_table *tbl; | |
45d43c29 | 573 | u32 slotid; |
fbcd4abc AA |
574 | |
575 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 576 | /* slot already allocated? */ |
dfb4f309 | 577 | if (res->sr_slot != NULL) |
ce5039c1 AA |
578 | return 0; |
579 | ||
fbcd4abc AA |
580 | tbl = &session->fc_slot_table; |
581 | ||
582 | spin_lock(&tbl->slot_tbl_lock); | |
a2118c33 | 583 | if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) && |
5601a00d | 584 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { |
0b1c8fc4 | 585 | /* The state manager will wait until the slot table is empty */ |
05f0d236 | 586 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
b069d94a | 587 | spin_unlock(&tbl->slot_tbl_lock); |
0b1c8fc4 | 588 | dprintk("%s session is draining\n", __func__); |
05f0d236 | 589 | return -EAGAIN; |
b069d94a AA |
590 | } |
591 | ||
689cf5c1 AB |
592 | if (!rpc_queue_empty(&tbl->slot_tbl_waitq) && |
593 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { | |
594 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
595 | spin_unlock(&tbl->slot_tbl_lock); | |
596 | dprintk("%s enforce FIFO order\n", __func__); | |
597 | return -EAGAIN; | |
598 | } | |
599 | ||
40ead580 | 600 | slotid = nfs4_find_slot(tbl); |
45d43c29 | 601 | if (slotid == NFS4_NO_SLOT) { |
fbcd4abc AA |
602 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
603 | spin_unlock(&tbl->slot_tbl_lock); | |
604 | dprintk("<-- %s: no free slots\n", __func__); | |
605 | return -EAGAIN; | |
606 | } | |
607 | spin_unlock(&tbl->slot_tbl_lock); | |
608 | ||
689cf5c1 | 609 | rpc_task_set_priority(task, RPC_PRIORITY_NORMAL); |
fbcd4abc | 610 | slot = tbl->slots + slotid; |
99fe60d0 | 611 | args->sa_session = session; |
fbcd4abc | 612 | args->sa_slotid = slotid; |
fbcd4abc AA |
613 | |
614 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, slotid, slot->seq_nr); | |
615 | ||
99fe60d0 | 616 | res->sr_session = session; |
dfb4f309 | 617 | res->sr_slot = slot; |
fbcd4abc | 618 | res->sr_renewal_time = jiffies; |
2a6e26cd | 619 | res->sr_status_flags = 0; |
fbcd4abc AA |
620 | /* |
621 | * sr_status is only set in decode_sequence, and so will remain | |
622 | * set to 1 if an rpc level failure occurs. | |
623 | */ | |
624 | res->sr_status = 1; | |
ce5039c1 AA |
625 | return 0; |
626 | } | |
dc70d7b3 | 627 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 628 | |
035168ab | 629 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
630 | struct nfs4_sequence_args *args, |
631 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
632 | struct rpc_task *task) |
633 | { | |
035168ab | 634 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
635 | int ret = 0; |
636 | ||
9d12b216 | 637 | if (session == NULL) |
035168ab | 638 | goto out; |
035168ab | 639 | |
12364a4f | 640 | dprintk("--> %s clp %p session %p sr_slot %td\n", |
dfb4f309 BH |
641 | __func__, session->clp, session, res->sr_slot ? |
642 | res->sr_slot - session->fc_slot_table.slots : -1); | |
ce5039c1 | 643 | |
9d12b216 | 644 | ret = nfs41_setup_sequence(session, args, res, task); |
ce5039c1 AA |
645 | out: |
646 | dprintk("<-- %s status=%d\n", __func__, ret); | |
647 | return ret; | |
648 | } | |
649 | ||
650 | struct nfs41_call_sync_data { | |
035168ab | 651 | const struct nfs_server *seq_server; |
ce5039c1 AA |
652 | struct nfs4_sequence_args *seq_args; |
653 | struct nfs4_sequence_res *seq_res; | |
ce5039c1 AA |
654 | }; |
655 | ||
656 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
657 | { | |
658 | struct nfs41_call_sync_data *data = calldata; | |
659 | ||
035168ab TM |
660 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
661 | ||
662 | if (nfs4_setup_sequence(data->seq_server, data->seq_args, | |
9d12b216 | 663 | data->seq_res, task)) |
ce5039c1 AA |
664 | return; |
665 | rpc_call_start(task); | |
666 | } | |
667 | ||
b257957e AB |
668 | static void nfs41_call_priv_sync_prepare(struct rpc_task *task, void *calldata) |
669 | { | |
670 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
671 | nfs41_call_sync_prepare(task, calldata); | |
672 | } | |
673 | ||
69ab40c4 AA |
674 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
675 | { | |
676 | struct nfs41_call_sync_data *data = calldata; | |
677 | ||
14516c3a | 678 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
679 | } |
680 | ||
17280175 | 681 | static const struct rpc_call_ops nfs41_call_sync_ops = { |
ce5039c1 | 682 | .rpc_call_prepare = nfs41_call_sync_prepare, |
69ab40c4 | 683 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
684 | }; |
685 | ||
17280175 | 686 | static const struct rpc_call_ops nfs41_call_priv_sync_ops = { |
b257957e AB |
687 | .rpc_call_prepare = nfs41_call_priv_sync_prepare, |
688 | .rpc_call_done = nfs41_call_sync_done, | |
689 | }; | |
690 | ||
7c513058 BS |
691 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
692 | struct nfs_server *server, | |
ce5039c1 AA |
693 | struct rpc_message *msg, |
694 | struct nfs4_sequence_args *args, | |
695 | struct nfs4_sequence_res *res, | |
b257957e | 696 | int privileged) |
ce5039c1 AA |
697 | { |
698 | int ret; | |
699 | struct rpc_task *task; | |
700 | struct nfs41_call_sync_data data = { | |
035168ab | 701 | .seq_server = server, |
ce5039c1 AA |
702 | .seq_args = args, |
703 | .seq_res = res, | |
ce5039c1 AA |
704 | }; |
705 | struct rpc_task_setup task_setup = { | |
7c513058 | 706 | .rpc_client = clnt, |
ce5039c1 AA |
707 | .rpc_message = msg, |
708 | .callback_ops = &nfs41_call_sync_ops, | |
709 | .callback_data = &data | |
710 | }; | |
711 | ||
b257957e AB |
712 | if (privileged) |
713 | task_setup.callback_ops = &nfs41_call_priv_sync_ops; | |
ce5039c1 AA |
714 | task = rpc_run_task(&task_setup); |
715 | if (IS_ERR(task)) | |
716 | ret = PTR_ERR(task); | |
717 | else { | |
718 | ret = task->tk_status; | |
719 | rpc_put_task(task); | |
720 | } | |
721 | return ret; | |
722 | } | |
723 | ||
7c513058 BS |
724 | int _nfs4_call_sync_session(struct rpc_clnt *clnt, |
725 | struct nfs_server *server, | |
cccef3b9 AA |
726 | struct rpc_message *msg, |
727 | struct nfs4_sequence_args *args, | |
728 | struct nfs4_sequence_res *res, | |
729 | int cache_reply) | |
730 | { | |
9d12b216 TM |
731 | nfs41_init_sequence(args, res, cache_reply); |
732 | return nfs4_call_sync_sequence(clnt, server, msg, args, res, 0); | |
cccef3b9 AA |
733 | } |
734 | ||
df896455 | 735 | #else |
9d12b216 TM |
736 | static inline |
737 | void nfs41_init_sequence(struct nfs4_sequence_args *args, | |
738 | struct nfs4_sequence_res *res, int cache_reply) | |
739 | { | |
740 | } | |
741 | ||
14516c3a TM |
742 | static int nfs4_sequence_done(struct rpc_task *task, |
743 | struct nfs4_sequence_res *res) | |
df896455 | 744 | { |
14516c3a | 745 | return 1; |
df896455 | 746 | } |
cccef3b9 AA |
747 | #endif /* CONFIG_NFS_V4_1 */ |
748 | ||
7c513058 BS |
749 | int _nfs4_call_sync(struct rpc_clnt *clnt, |
750 | struct nfs_server *server, | |
cccef3b9 AA |
751 | struct rpc_message *msg, |
752 | struct nfs4_sequence_args *args, | |
753 | struct nfs4_sequence_res *res, | |
754 | int cache_reply) | |
755 | { | |
9d12b216 | 756 | nfs41_init_sequence(args, res, cache_reply); |
7c513058 | 757 | return rpc_call_sync(clnt, msg, 0); |
cccef3b9 AA |
758 | } |
759 | ||
e73b83f2 | 760 | static inline |
7c513058 BS |
761 | int nfs4_call_sync(struct rpc_clnt *clnt, |
762 | struct nfs_server *server, | |
e73b83f2 BS |
763 | struct rpc_message *msg, |
764 | struct nfs4_sequence_args *args, | |
765 | struct nfs4_sequence_res *res, | |
766 | int cache_reply) | |
767 | { | |
7c513058 BS |
768 | return server->nfs_client->cl_mvops->call_sync(clnt, server, msg, |
769 | args, res, cache_reply); | |
e73b83f2 | 770 | } |
cccef3b9 | 771 | |
38478b24 | 772 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 773 | { |
38478b24 | 774 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 775 | |
38478b24 | 776 | spin_lock(&dir->i_lock); |
40d24704 | 777 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; |
a9a4a87a | 778 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 779 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 780 | dir->i_version = cinfo->after; |
38478b24 | 781 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
782 | } |
783 | ||
e56e0b78 | 784 | struct nfs4_opendata { |
c6d00e63 | 785 | struct kref kref; |
e56e0b78 TM |
786 | struct nfs_openargs o_arg; |
787 | struct nfs_openres o_res; | |
cdd4e68b TM |
788 | struct nfs_open_confirmargs c_arg; |
789 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
790 | struct nfs4_string owner_name; |
791 | struct nfs4_string group_name; | |
e56e0b78 | 792 | struct nfs_fattr f_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; | |
c1d51931 TM |
808 | p->o_res.seqid = p->o_arg.seqid; |
809 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 TM |
810 | p->o_res.server = p->o_arg.server; |
811 | nfs_fattr_init(&p->f_attr); | |
6926afd1 | 812 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
813 | } |
814 | ||
82a2c1b7 | 815 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 816 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be TM |
817 | const struct iattr *attrs, |
818 | gfp_t gfp_mask) | |
e56e0b78 | 819 | { |
82a2c1b7 | 820 | struct dentry *parent = dget_parent(dentry); |
e56e0b78 TM |
821 | struct inode *dir = parent->d_inode; |
822 | struct nfs_server *server = NFS_SERVER(dir); | |
823 | struct nfs4_opendata *p; | |
824 | ||
8535b2be | 825 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
826 | if (p == NULL) |
827 | goto err; | |
8535b2be | 828 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 TM |
829 | if (p->o_arg.seqid == NULL) |
830 | goto err_free; | |
82a2c1b7 AV |
831 | nfs_sb_active(dentry->d_sb); |
832 | p->dentry = dget(dentry); | |
e56e0b78 TM |
833 | p->dir = parent; |
834 | p->owner = sp; | |
835 | atomic_inc(&sp->so_count); | |
836 | p->o_arg.fh = NFS_FH(dir); | |
dc0b027d TM |
837 | p->o_arg.open_flags = flags; |
838 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
7539bbab | 839 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
95b72eb0 TM |
840 | p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time); |
841 | p->o_arg.id.uniquifier = sp->so_seqid.owner_id; | |
82a2c1b7 | 842 | p->o_arg.name = &dentry->d_name; |
e56e0b78 TM |
843 | p->o_arg.server = server; |
844 | p->o_arg.bitmask = server->attr_bitmask; | |
845 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; | |
536e43d1 | 846 | if (attrs != NULL && attrs->ia_valid != 0) { |
cd93710e | 847 | __be32 verf[2]; |
d77d76ff | 848 | |
e56e0b78 TM |
849 | p->o_arg.u.attrs = &p->attrs; |
850 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
cd93710e CL |
851 | |
852 | verf[0] = jiffies; | |
853 | verf[1] = current->pid; | |
854 | memcpy(p->o_arg.u.verifier.data, verf, | |
855 | sizeof(p->o_arg.u.verifier.data)); | |
e56e0b78 | 856 | } |
cdd4e68b TM |
857 | p->c_arg.fh = &p->o_res.fh; |
858 | p->c_arg.stateid = &p->o_res.stateid; | |
859 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 860 | nfs4_init_opendata_res(p); |
c6d00e63 | 861 | kref_init(&p->kref); |
e56e0b78 TM |
862 | return p; |
863 | err_free: | |
864 | kfree(p); | |
865 | err: | |
866 | dput(parent); | |
867 | return NULL; | |
868 | } | |
869 | ||
c6d00e63 | 870 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 871 | { |
c6d00e63 TM |
872 | struct nfs4_opendata *p = container_of(kref, |
873 | struct nfs4_opendata, kref); | |
82a2c1b7 | 874 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
875 | |
876 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
877 | if (p->state != NULL) |
878 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
879 | nfs4_put_state_owner(p->owner); |
880 | dput(p->dir); | |
82a2c1b7 AV |
881 | dput(p->dentry); |
882 | nfs_sb_deactive(sb); | |
6926afd1 | 883 | nfs_fattr_free_names(&p->f_attr); |
c6d00e63 TM |
884 | kfree(p); |
885 | } | |
886 | ||
887 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
888 | { | |
889 | if (p != NULL) | |
890 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
891 | } |
892 | ||
06f814a3 TM |
893 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
894 | { | |
06f814a3 TM |
895 | int ret; |
896 | ||
06f814a3 | 897 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
898 | return ret; |
899 | } | |
900 | ||
dc0b027d | 901 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
902 | { |
903 | int ret = 0; | |
dc0b027d | 904 | |
536e43d1 | 905 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
906 | goto out; |
907 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 908 | case FMODE_READ: |
88069f77 TM |
909 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
910 | && state->n_rdonly != 0; | |
6ee41268 TM |
911 | break; |
912 | case FMODE_WRITE: | |
88069f77 TM |
913 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
914 | && state->n_wronly != 0; | |
6ee41268 TM |
915 | break; |
916 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
917 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
918 | && state->n_rdwr != 0; | |
6ee41268 | 919 | } |
dc0b027d | 920 | out: |
6ee41268 TM |
921 | return ret; |
922 | } | |
923 | ||
dc0b027d | 924 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 925 | { |
652f89f6 TM |
926 | if (delegation == NULL) |
927 | return 0; | |
dc0b027d | 928 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 929 | return 0; |
15c831bf | 930 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 931 | return 0; |
b7391f44 | 932 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
933 | return 1; |
934 | } | |
935 | ||
dc0b027d | 936 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 937 | { |
dc0b027d | 938 | switch (fmode) { |
e7616923 TM |
939 | case FMODE_WRITE: |
940 | state->n_wronly++; | |
941 | break; | |
942 | case FMODE_READ: | |
943 | state->n_rdonly++; | |
944 | break; | |
945 | case FMODE_READ|FMODE_WRITE: | |
946 | state->n_rdwr++; | |
947 | } | |
dc0b027d | 948 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
949 | } |
950 | ||
dc0b027d | 951 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
952 | { |
953 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
f597c537 TM |
954 | nfs4_stateid_copy(&state->stateid, stateid); |
955 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
dc0b027d | 956 | switch (fmode) { |
003707c7 TM |
957 | case FMODE_READ: |
958 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
959 | break; | |
960 | case FMODE_WRITE: | |
961 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
962 | break; | |
963 | case FMODE_READ|FMODE_WRITE: | |
964 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
965 | } | |
e7616923 TM |
966 | } |
967 | ||
dc0b027d | 968 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 969 | { |
8bda4e4c | 970 | write_seqlock(&state->seqlock); |
dc0b027d | 971 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 972 | write_sequnlock(&state->seqlock); |
003707c7 TM |
973 | } |
974 | ||
dc0b027d | 975 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 976 | { |
8bda4e4c TM |
977 | /* |
978 | * Protect the call to nfs4_state_set_mode_locked and | |
979 | * serialise the stateid update | |
980 | */ | |
981 | write_seqlock(&state->seqlock); | |
003707c7 | 982 | if (deleg_stateid != NULL) { |
f597c537 | 983 | nfs4_stateid_copy(&state->stateid, deleg_stateid); |
003707c7 TM |
984 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
985 | } | |
986 | if (open_stateid != NULL) | |
dc0b027d | 987 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
988 | write_sequnlock(&state->seqlock); |
989 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 990 | update_open_stateflags(state, fmode); |
ec073428 | 991 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
992 | } |
993 | ||
dc0b027d | 994 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
995 | { |
996 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
997 | struct nfs_delegation *deleg_cur; | |
998 | int ret = 0; | |
999 | ||
dc0b027d | 1000 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
1001 | |
1002 | rcu_read_lock(); | |
1003 | deleg_cur = rcu_dereference(nfsi->delegation); | |
1004 | if (deleg_cur == NULL) | |
1005 | goto no_delegation; | |
1006 | ||
1007 | spin_lock(&deleg_cur->lock); | |
1008 | if (nfsi->delegation != deleg_cur || | |
dc0b027d | 1009 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
1010 | goto no_delegation_unlock; |
1011 | ||
1012 | if (delegation == NULL) | |
1013 | delegation = &deleg_cur->stateid; | |
f597c537 | 1014 | else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) |
34310430 TM |
1015 | goto no_delegation_unlock; |
1016 | ||
b7391f44 | 1017 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 1018 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
1019 | ret = 1; |
1020 | no_delegation_unlock: | |
1021 | spin_unlock(&deleg_cur->lock); | |
1022 | no_delegation: | |
1023 | rcu_read_unlock(); | |
1024 | ||
1025 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 1026 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
1027 | ret = 1; |
1028 | } | |
1029 | ||
1030 | return ret; | |
1031 | } | |
1032 | ||
1033 | ||
dc0b027d | 1034 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1035 | { |
1036 | struct nfs_delegation *delegation; | |
1037 | ||
1038 | rcu_read_lock(); | |
1039 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1040 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1041 | rcu_read_unlock(); |
1042 | return; | |
1043 | } | |
1044 | rcu_read_unlock(); | |
1045 | nfs_inode_return_delegation(inode); | |
1046 | } | |
1047 | ||
6ee41268 | 1048 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1049 | { |
1050 | struct nfs4_state *state = opendata->state; | |
1051 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1052 | struct nfs_delegation *delegation; | |
536e43d1 | 1053 | int open_mode = opendata->o_arg.open_flags & (O_EXCL|O_TRUNC); |
dc0b027d | 1054 | fmode_t fmode = opendata->o_arg.fmode; |
aac00a8d TM |
1055 | nfs4_stateid stateid; |
1056 | int ret = -EAGAIN; | |
1057 | ||
aac00a8d | 1058 | for (;;) { |
dc0b027d | 1059 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 1060 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
1061 | if (can_open_cached(state, fmode, open_mode)) { |
1062 | update_open_stateflags(state, fmode); | |
6ee41268 | 1063 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
1064 | goto out_return_state; |
1065 | } | |
1066 | spin_unlock(&state->owner->so_lock); | |
1067 | } | |
34310430 TM |
1068 | rcu_read_lock(); |
1069 | delegation = rcu_dereference(nfsi->delegation); | |
652f89f6 | 1070 | if (!can_open_delegated(delegation, fmode)) { |
34310430 | 1071 | rcu_read_unlock(); |
aac00a8d | 1072 | break; |
34310430 | 1073 | } |
aac00a8d | 1074 | /* Save the delegation */ |
f597c537 | 1075 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1076 | rcu_read_unlock(); |
af22f94a | 1077 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
1078 | if (ret != 0) |
1079 | goto out; | |
1080 | ret = -EAGAIN; | |
34310430 TM |
1081 | |
1082 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1083 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1084 | goto out_return_state; |
aac00a8d | 1085 | } |
aac00a8d TM |
1086 | out: |
1087 | return ERR_PTR(ret); | |
1088 | out_return_state: | |
1089 | atomic_inc(&state->count); | |
1090 | return state; | |
1091 | } | |
1092 | ||
24ac23ab TM |
1093 | static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) |
1094 | { | |
1095 | struct inode *inode; | |
1096 | struct nfs4_state *state = NULL; | |
003707c7 | 1097 | struct nfs_delegation *delegation; |
1b370bc2 | 1098 | int ret; |
24ac23ab | 1099 | |
aac00a8d | 1100 | if (!data->rpc_done) { |
6ee41268 | 1101 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1102 | goto out; |
1103 | } | |
1104 | ||
1b370bc2 | 1105 | ret = -EAGAIN; |
24ac23ab | 1106 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1107 | goto err; |
24ac23ab | 1108 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 1109 | ret = PTR_ERR(inode); |
03f28e3a | 1110 | if (IS_ERR(inode)) |
1b370bc2 TM |
1111 | goto err; |
1112 | ret = -ENOMEM; | |
24ac23ab TM |
1113 | state = nfs4_get_open_state(inode, data->owner); |
1114 | if (state == NULL) | |
1b370bc2 | 1115 | goto err_put_inode; |
549d6ed5 | 1116 | if (data->o_res.delegation_type != 0) { |
4e0038b6 | 1117 | struct nfs_client *clp = NFS_SERVER(inode)->nfs_client; |
549d6ed5 TM |
1118 | int delegation_flags = 0; |
1119 | ||
003707c7 TM |
1120 | rcu_read_lock(); |
1121 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
1122 | if (delegation) | |
1123 | delegation_flags = delegation->flags; | |
1124 | rcu_read_unlock(); | |
652f89f6 TM |
1125 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) { |
1126 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " | |
1127 | "returning a delegation for " | |
1128 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
4e0038b6 | 1129 | clp->cl_hostname); |
652f89f6 | 1130 | } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) |
549d6ed5 TM |
1131 | nfs_inode_set_delegation(state->inode, |
1132 | data->owner->so_cred, | |
1133 | &data->o_res); | |
1134 | else | |
1135 | nfs_inode_reclaim_delegation(state->inode, | |
1136 | data->owner->so_cred, | |
1137 | &data->o_res); | |
1138 | } | |
34310430 TM |
1139 | |
1140 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
dc0b027d | 1141 | data->o_arg.fmode); |
24ac23ab | 1142 | iput(inode); |
aac00a8d | 1143 | out: |
24ac23ab | 1144 | return state; |
1b370bc2 TM |
1145 | err_put_inode: |
1146 | iput(inode); | |
1147 | err: | |
1148 | return ERR_PTR(ret); | |
24ac23ab TM |
1149 | } |
1150 | ||
864472e9 TM |
1151 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1152 | { | |
1153 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1154 | struct nfs_open_context *ctx; | |
1155 | ||
1156 | spin_lock(&state->inode->i_lock); | |
1157 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1158 | if (ctx->state != state) | |
1159 | continue; | |
1160 | get_nfs_open_context(ctx); | |
1161 | spin_unlock(&state->inode->i_lock); | |
1162 | return ctx; | |
1163 | } | |
1164 | spin_unlock(&state->inode->i_lock); | |
1165 | return ERR_PTR(-ENOENT); | |
1166 | } | |
1167 | ||
6f220ed5 TM |
1168 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
1169 | { | |
1170 | struct nfs4_opendata *opendata; | |
1171 | ||
3d4ff43d | 1172 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, NULL, GFP_NOFS); |
6f220ed5 TM |
1173 | if (opendata == NULL) |
1174 | return ERR_PTR(-ENOMEM); | |
1175 | opendata->state = state; | |
1176 | atomic_inc(&state->count); | |
1177 | return opendata; | |
1178 | } | |
1179 | ||
dc0b027d | 1180 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1181 | { |
2ced46c2 | 1182 | struct nfs4_state *newstate; |
864472e9 TM |
1183 | int ret; |
1184 | ||
dc0b027d TM |
1185 | opendata->o_arg.open_flags = 0; |
1186 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1187 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1188 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1189 | nfs4_init_opendata_res(opendata); | |
b257957e | 1190 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1191 | if (ret != 0) |
1192 | return ret; | |
2ced46c2 | 1193 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1194 | if (IS_ERR(newstate)) |
1195 | return PTR_ERR(newstate); | |
643168c2 | 1196 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1197 | *res = newstate; |
864472e9 TM |
1198 | return 0; |
1199 | } | |
1200 | ||
1201 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1202 | { | |
864472e9 | 1203 | struct nfs4_state *newstate; |
864472e9 TM |
1204 | int ret; |
1205 | ||
1206 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1207 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
1208 | smp_rmb(); |
1209 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1210 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1211 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1212 | if (ret != 0) |
1213 | return ret; | |
2ced46c2 TM |
1214 | if (newstate != state) |
1215 | return -ESTALE; | |
864472e9 TM |
1216 | } |
1217 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1218 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1219 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1220 | if (ret != 0) |
1221 | return ret; | |
2ced46c2 TM |
1222 | if (newstate != state) |
1223 | return -ESTALE; | |
864472e9 TM |
1224 | } |
1225 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1226 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1227 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1228 | if (ret != 0) |
1229 | return ret; | |
2ced46c2 TM |
1230 | if (newstate != state) |
1231 | return -ESTALE; | |
864472e9 | 1232 | } |
1ac7e2fd TM |
1233 | /* |
1234 | * We may have performed cached opens for all three recoveries. | |
1235 | * Check if we need to update the current stateid. | |
1236 | */ | |
1237 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 1238 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 1239 | write_seqlock(&state->seqlock); |
1ac7e2fd | 1240 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 1241 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 1242 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1243 | } |
864472e9 TM |
1244 | return 0; |
1245 | } | |
1246 | ||
1da177e4 LT |
1247 | /* |
1248 | * OPEN_RECLAIM: | |
1249 | * reclaim state on the server after a reboot. | |
1da177e4 | 1250 | */ |
539cd03a | 1251 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1252 | { |
1ac7e2fd | 1253 | struct nfs_delegation *delegation; |
864472e9 | 1254 | struct nfs4_opendata *opendata; |
dc0b027d | 1255 | fmode_t delegation_type = 0; |
1da177e4 LT |
1256 | int status; |
1257 | ||
6f220ed5 TM |
1258 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1259 | if (IS_ERR(opendata)) | |
1260 | return PTR_ERR(opendata); | |
864472e9 TM |
1261 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
1262 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
1263 | rcu_read_lock(); |
1264 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1265 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1266 | delegation_type = delegation->type; |
1ac7e2fd | 1267 | rcu_read_unlock(); |
864472e9 TM |
1268 | opendata->o_arg.u.delegation_type = delegation_type; |
1269 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1270 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1271 | return status; |
1272 | } | |
1273 | ||
539cd03a | 1274 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1275 | { |
1276 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1277 | struct nfs4_exception exception = { }; | |
1278 | int err; | |
1279 | do { | |
539cd03a | 1280 | err = _nfs4_do_open_reclaim(ctx, state); |
168667c4 | 1281 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1282 | break; |
1283 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1284 | } while (exception.retry); |
1285 | return err; | |
1286 | } | |
1287 | ||
864472e9 TM |
1288 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1289 | { | |
1290 | struct nfs_open_context *ctx; | |
1291 | int ret; | |
1292 | ||
1293 | ctx = nfs4_state_find_open_context(state); | |
1294 | if (IS_ERR(ctx)) | |
1295 | return PTR_ERR(ctx); | |
539cd03a | 1296 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1297 | put_nfs_open_context(ctx); |
1298 | return ret; | |
1299 | } | |
1300 | ||
13437e12 | 1301 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 1302 | { |
e56e0b78 | 1303 | struct nfs4_opendata *opendata; |
864472e9 | 1304 | int ret; |
1da177e4 | 1305 | |
6f220ed5 TM |
1306 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1307 | if (IS_ERR(opendata)) | |
1308 | return PTR_ERR(opendata); | |
e56e0b78 | 1309 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
f597c537 | 1310 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); |
864472e9 | 1311 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 1312 | nfs4_opendata_put(opendata); |
864472e9 | 1313 | return ret; |
1da177e4 LT |
1314 | } |
1315 | ||
13437e12 | 1316 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
1317 | { |
1318 | struct nfs4_exception exception = { }; | |
539cd03a | 1319 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
1320 | int err; |
1321 | do { | |
13437e12 | 1322 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
1323 | switch (err) { |
1324 | case 0: | |
965b5d67 TM |
1325 | case -ENOENT: |
1326 | case -ESTALE: | |
1327 | goto out; | |
bcfa49f6 RL |
1328 | case -NFS4ERR_BADSESSION: |
1329 | case -NFS4ERR_BADSLOT: | |
1330 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1331 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1332 | case -NFS4ERR_DEADSESSION: | |
0400a6b0 | 1333 | nfs4_schedule_session_recovery(server->nfs_client->cl_session); |
bcfa49f6 | 1334 | goto out; |
1da177e4 LT |
1335 | case -NFS4ERR_STALE_CLIENTID: |
1336 | case -NFS4ERR_STALE_STATEID: | |
1337 | case -NFS4ERR_EXPIRED: | |
1338 | /* Don't recall a delegation if it was lost */ | |
0400a6b0 | 1339 | nfs4_schedule_lease_recovery(server->nfs_client); |
965b5d67 TM |
1340 | goto out; |
1341 | case -ERESTARTSYS: | |
1342 | /* | |
1343 | * The show must go on: exit, but mark the | |
1344 | * stateid as needing recovery. | |
1345 | */ | |
a1d0b5ee | 1346 | case -NFS4ERR_DELEG_REVOKED: |
965b5d67 TM |
1347 | case -NFS4ERR_ADMIN_REVOKED: |
1348 | case -NFS4ERR_BAD_STATEID: | |
a1d0b5ee TM |
1349 | nfs_inode_find_state_and_recover(state->inode, |
1350 | stateid); | |
0400a6b0 | 1351 | nfs4_schedule_stateid_recovery(server, state); |
168667c4 TM |
1352 | case -EKEYEXPIRED: |
1353 | /* | |
1354 | * User RPCSEC_GSS context has expired. | |
1355 | * We cannot recover this stateid now, so | |
1356 | * skip it and allow recovery thread to | |
1357 | * proceed. | |
1358 | */ | |
965b5d67 TM |
1359 | case -ENOMEM: |
1360 | err = 0; | |
1361 | goto out; | |
1da177e4 LT |
1362 | } |
1363 | err = nfs4_handle_exception(server, err, &exception); | |
1364 | } while (exception.retry); | |
965b5d67 | 1365 | out: |
1da177e4 LT |
1366 | return err; |
1367 | } | |
1368 | ||
cdd4e68b TM |
1369 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1370 | { | |
1371 | struct nfs4_opendata *data = calldata; | |
1372 | ||
1373 | data->rpc_status = task->tk_status; | |
26e976a8 | 1374 | if (data->rpc_status == 0) { |
f597c537 | 1375 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 1376 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1377 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1378 | data->rpc_done = 1; |
26e976a8 | 1379 | } |
cdd4e68b TM |
1380 | } |
1381 | ||
1382 | static void nfs4_open_confirm_release(void *calldata) | |
1383 | { | |
1384 | struct nfs4_opendata *data = calldata; | |
1385 | struct nfs4_state *state = NULL; | |
1386 | ||
1387 | /* If this request hasn't been cancelled, do nothing */ | |
1388 | if (data->cancelled == 0) | |
1389 | goto out_free; | |
1390 | /* In case of error, no cleanup! */ | |
3e309914 | 1391 | if (!data->rpc_done) |
cdd4e68b | 1392 | goto out_free; |
cdd4e68b | 1393 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1394 | if (!IS_ERR(state)) |
643168c2 | 1395 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1396 | out_free: |
c6d00e63 | 1397 | nfs4_opendata_put(data); |
cdd4e68b TM |
1398 | } |
1399 | ||
1400 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1401 | .rpc_call_done = nfs4_open_confirm_done, |
1402 | .rpc_release = nfs4_open_confirm_release, | |
1403 | }; | |
1404 | ||
1405 | /* | |
1406 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1407 | */ | |
1408 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1409 | { | |
1410 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1411 | struct rpc_task *task; | |
5138fde0 TM |
1412 | struct rpc_message msg = { |
1413 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1414 | .rpc_argp = &data->c_arg, | |
1415 | .rpc_resp = &data->c_res, | |
1416 | .rpc_cred = data->owner->so_cred, | |
1417 | }; | |
c970aa85 TM |
1418 | struct rpc_task_setup task_setup_data = { |
1419 | .rpc_client = server->client, | |
5138fde0 | 1420 | .rpc_message = &msg, |
c970aa85 TM |
1421 | .callback_ops = &nfs4_open_confirm_ops, |
1422 | .callback_data = data, | |
101070ca | 1423 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1424 | .flags = RPC_TASK_ASYNC, |
1425 | }; | |
1da177e4 LT |
1426 | int status; |
1427 | ||
c6d00e63 | 1428 | kref_get(&data->kref); |
3e309914 TM |
1429 | data->rpc_done = 0; |
1430 | data->rpc_status = 0; | |
5138fde0 | 1431 | data->timestamp = jiffies; |
c970aa85 | 1432 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1433 | if (IS_ERR(task)) |
cdd4e68b | 1434 | return PTR_ERR(task); |
cdd4e68b TM |
1435 | status = nfs4_wait_for_completion_rpc_task(task); |
1436 | if (status != 0) { | |
1437 | data->cancelled = 1; | |
1438 | smp_wmb(); | |
1439 | } else | |
1440 | status = data->rpc_status; | |
e6b3c4db | 1441 | rpc_put_task(task); |
1da177e4 LT |
1442 | return status; |
1443 | } | |
1444 | ||
24ac23ab | 1445 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1446 | { |
24ac23ab TM |
1447 | struct nfs4_opendata *data = calldata; |
1448 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 1449 | |
24ac23ab TM |
1450 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
1451 | return; | |
aac00a8d TM |
1452 | /* |
1453 | * Check if we still need to send an OPEN call, or if we can use | |
1454 | * a delegation instead. | |
1455 | */ | |
1456 | if (data->state != NULL) { | |
1457 | struct nfs_delegation *delegation; | |
1458 | ||
dc0b027d | 1459 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1460 | goto out_no_action; |
aac00a8d TM |
1461 | rcu_read_lock(); |
1462 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
652f89f6 TM |
1463 | if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR && |
1464 | can_open_delegated(delegation, data->o_arg.fmode)) | |
1465 | goto unlock_no_action; | |
aac00a8d TM |
1466 | rcu_read_unlock(); |
1467 | } | |
95b72eb0 | 1468 | /* Update client id. */ |
1f0e890d | 1469 | data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; |
6f220ed5 | 1470 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 1471 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
6f220ed5 TM |
1472 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1473 | } | |
26e976a8 | 1474 | data->timestamp = jiffies; |
035168ab | 1475 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 1476 | &data->o_arg.seq_args, |
9d12b216 | 1477 | &data->o_res.seq_res, task)) |
d898528c | 1478 | return; |
5138fde0 | 1479 | rpc_call_start(task); |
6ee41268 | 1480 | return; |
652f89f6 TM |
1481 | unlock_no_action: |
1482 | rcu_read_unlock(); | |
6ee41268 TM |
1483 | out_no_action: |
1484 | task->tk_action = NULL; | |
1485 | ||
24ac23ab | 1486 | } |
1da177e4 | 1487 | |
b257957e AB |
1488 | static void nfs4_recover_open_prepare(struct rpc_task *task, void *calldata) |
1489 | { | |
1490 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
1491 | nfs4_open_prepare(task, calldata); | |
1492 | } | |
1493 | ||
24ac23ab TM |
1494 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1495 | { | |
1496 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1497 | |
24ac23ab | 1498 | data->rpc_status = task->tk_status; |
d898528c | 1499 | |
14516c3a TM |
1500 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1501 | return; | |
d898528c | 1502 | |
24ac23ab TM |
1503 | if (task->tk_status == 0) { |
1504 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1505 | case S_IFREG: |
1506 | break; | |
1507 | case S_IFLNK: | |
24ac23ab | 1508 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1509 | break; |
1510 | case S_IFDIR: | |
24ac23ab | 1511 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1512 | break; |
1513 | default: | |
24ac23ab | 1514 | data->rpc_status = -ENOTDIR; |
6f926b5b | 1515 | } |
26e976a8 | 1516 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1517 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1518 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1519 | } |
3e309914 | 1520 | data->rpc_done = 1; |
24ac23ab | 1521 | } |
6f926b5b | 1522 | |
24ac23ab TM |
1523 | static void nfs4_open_release(void *calldata) |
1524 | { | |
1525 | struct nfs4_opendata *data = calldata; | |
1526 | struct nfs4_state *state = NULL; | |
1527 | ||
1528 | /* If this request hasn't been cancelled, do nothing */ | |
1529 | if (data->cancelled == 0) | |
1530 | goto out_free; | |
1531 | /* In case of error, no cleanup! */ | |
3e309914 | 1532 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1533 | goto out_free; |
1534 | /* In case we need an open_confirm, no cleanup! */ | |
1535 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1536 | goto out_free; | |
24ac23ab | 1537 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1538 | if (!IS_ERR(state)) |
643168c2 | 1539 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1540 | out_free: |
c6d00e63 | 1541 | nfs4_opendata_put(data); |
24ac23ab TM |
1542 | } |
1543 | ||
1544 | static const struct rpc_call_ops nfs4_open_ops = { | |
1545 | .rpc_call_prepare = nfs4_open_prepare, | |
1546 | .rpc_call_done = nfs4_open_done, | |
1547 | .rpc_release = nfs4_open_release, | |
1548 | }; | |
1549 | ||
b257957e AB |
1550 | static const struct rpc_call_ops nfs4_recover_open_ops = { |
1551 | .rpc_call_prepare = nfs4_recover_open_prepare, | |
1552 | .rpc_call_done = nfs4_open_done, | |
1553 | .rpc_release = nfs4_open_release, | |
1554 | }; | |
1555 | ||
1556 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) | |
24ac23ab TM |
1557 | { |
1558 | struct inode *dir = data->dir->d_inode; | |
1559 | struct nfs_server *server = NFS_SERVER(dir); | |
1560 | struct nfs_openargs *o_arg = &data->o_arg; | |
1561 | struct nfs_openres *o_res = &data->o_res; | |
1562 | struct rpc_task *task; | |
5138fde0 TM |
1563 | struct rpc_message msg = { |
1564 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1565 | .rpc_argp = o_arg, | |
1566 | .rpc_resp = o_res, | |
1567 | .rpc_cred = data->owner->so_cred, | |
1568 | }; | |
c970aa85 TM |
1569 | struct rpc_task_setup task_setup_data = { |
1570 | .rpc_client = server->client, | |
5138fde0 | 1571 | .rpc_message = &msg, |
c970aa85 TM |
1572 | .callback_ops = &nfs4_open_ops, |
1573 | .callback_data = data, | |
101070ca | 1574 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1575 | .flags = RPC_TASK_ASYNC, |
1576 | }; | |
24ac23ab TM |
1577 | int status; |
1578 | ||
9d12b216 | 1579 | nfs41_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 1580 | kref_get(&data->kref); |
3e309914 TM |
1581 | data->rpc_done = 0; |
1582 | data->rpc_status = 0; | |
2ced46c2 | 1583 | data->cancelled = 0; |
b257957e AB |
1584 | if (isrecover) |
1585 | task_setup_data.callback_ops = &nfs4_recover_open_ops; | |
c970aa85 | 1586 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1587 | if (IS_ERR(task)) |
1588 | return PTR_ERR(task); | |
1589 | status = nfs4_wait_for_completion_rpc_task(task); | |
1590 | if (status != 0) { | |
1591 | data->cancelled = 1; | |
1592 | smp_wmb(); | |
1593 | } else | |
1594 | status = data->rpc_status; | |
1595 | rpc_put_task(task); | |
1596 | ||
1597 | return status; | |
1598 | } | |
1599 | ||
1600 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1601 | { | |
1602 | struct inode *dir = data->dir->d_inode; | |
1603 | struct nfs_openres *o_res = &data->o_res; | |
1604 | int status; | |
1605 | ||
1606 | status = nfs4_run_open_task(data, 1); | |
1607 | if (status != 0 || !data->rpc_done) | |
1608 | return status; | |
1609 | ||
6926afd1 TM |
1610 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
1611 | ||
b257957e AB |
1612 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
1613 | status = _nfs4_proc_open_confirm(data); | |
1614 | if (status != 0) | |
1615 | return status; | |
1616 | } | |
1617 | ||
1618 | return status; | |
1619 | } | |
1620 | ||
1621 | /* | |
1622 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1623 | */ | |
1624 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1625 | { | |
1626 | struct inode *dir = data->dir->d_inode; | |
1627 | struct nfs_server *server = NFS_SERVER(dir); | |
1628 | struct nfs_openargs *o_arg = &data->o_arg; | |
1629 | struct nfs_openres *o_res = &data->o_res; | |
1630 | int status; | |
1631 | ||
1632 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
1633 | if (!data->rpc_done) |
1634 | return status; | |
1635 | if (status != 0) { | |
1636 | if (status == -NFS4ERR_BADNAME && | |
1637 | !(o_arg->open_flags & O_CREAT)) | |
1638 | return -ENOENT; | |
24ac23ab | 1639 | return status; |
08ef7bd3 | 1640 | } |
24ac23ab | 1641 | |
6926afd1 TM |
1642 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
1643 | ||
90ff0c54 | 1644 | if (o_arg->open_flags & O_CREAT) |
56ae19f3 | 1645 | update_changeattr(dir, &o_res->cinfo); |
0df5dd4a TM |
1646 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1647 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1648 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1649 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1650 | if (status != 0) |
24ac23ab | 1651 | return status; |
1da177e4 LT |
1652 | } |
1653 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1654 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1655 | return 0; |
1da177e4 LT |
1656 | } |
1657 | ||
d83217c1 | 1658 | static int nfs4_client_recover_expired_lease(struct nfs_client *clp) |
58d9714a | 1659 | { |
a78cb57a | 1660 | unsigned int loop; |
6b30954e | 1661 | int ret; |
58d9714a | 1662 | |
a78cb57a | 1663 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { |
65de872e | 1664 | ret = nfs4_wait_clnt_recover(clp); |
6b30954e | 1665 | if (ret != 0) |
a78cb57a | 1666 | break; |
e598d843 TM |
1667 | if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) && |
1668 | !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state)) | |
6b30954e | 1669 | break; |
0400a6b0 | 1670 | nfs4_schedule_state_manager(clp); |
a78cb57a | 1671 | ret = -EIO; |
6b30954e | 1672 | } |
a78cb57a | 1673 | return ret; |
58d9714a TM |
1674 | } |
1675 | ||
d83217c1 AA |
1676 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1677 | { | |
1678 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1679 | } | |
1680 | ||
1da177e4 LT |
1681 | /* |
1682 | * OPEN_EXPIRED: | |
1683 | * reclaim state on the server after a network partition. | |
1684 | * Assumes caller holds the appropriate lock | |
1685 | */ | |
539cd03a | 1686 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1687 | { |
e56e0b78 | 1688 | struct nfs4_opendata *opendata; |
864472e9 | 1689 | int ret; |
1da177e4 | 1690 | |
6f220ed5 TM |
1691 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1692 | if (IS_ERR(opendata)) | |
1693 | return PTR_ERR(opendata); | |
864472e9 | 1694 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1695 | if (ret == -ESTALE) |
3d4ff43d | 1696 | d_drop(ctx->dentry); |
c6d00e63 | 1697 | nfs4_opendata_put(opendata); |
864472e9 | 1698 | return ret; |
1da177e4 LT |
1699 | } |
1700 | ||
a9ed2e25 | 1701 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1702 | { |
539cd03a | 1703 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1704 | struct nfs4_exception exception = { }; |
1705 | int err; | |
1706 | ||
1707 | do { | |
539cd03a | 1708 | err = _nfs4_open_expired(ctx, state); |
a9ed2e25 TM |
1709 | switch (err) { |
1710 | default: | |
1711 | goto out; | |
1712 | case -NFS4ERR_GRACE: | |
1713 | case -NFS4ERR_DELAY: | |
1714 | nfs4_handle_exception(server, err, &exception); | |
1715 | err = 0; | |
1716 | } | |
202b50dc | 1717 | } while (exception.retry); |
a9ed2e25 | 1718 | out: |
202b50dc TM |
1719 | return err; |
1720 | } | |
1721 | ||
1da177e4 LT |
1722 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1723 | { | |
1da177e4 | 1724 | struct nfs_open_context *ctx; |
864472e9 | 1725 | int ret; |
1da177e4 | 1726 | |
864472e9 TM |
1727 | ctx = nfs4_state_find_open_context(state); |
1728 | if (IS_ERR(ctx)) | |
1729 | return PTR_ERR(ctx); | |
539cd03a | 1730 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1731 | put_nfs_open_context(ctx); |
1732 | return ret; | |
1da177e4 LT |
1733 | } |
1734 | ||
f062eb6c | 1735 | #if defined(CONFIG_NFS_V4_1) |
b01dd1d8 | 1736 | static int nfs41_check_expired_stateid(struct nfs4_state *state, nfs4_stateid *stateid, unsigned int flags) |
f062eb6c | 1737 | { |
b01dd1d8 | 1738 | int status = NFS_OK; |
f062eb6c BS |
1739 | struct nfs_server *server = NFS_SERVER(state->inode); |
1740 | ||
b01dd1d8 BS |
1741 | if (state->flags & flags) { |
1742 | status = nfs41_test_stateid(server, stateid); | |
1743 | if (status != NFS_OK) { | |
1744 | nfs41_free_stateid(server, stateid); | |
1745 | state->flags &= ~flags; | |
1746 | } | |
1747 | } | |
1748 | return status; | |
1749 | } | |
1750 | ||
1751 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
1752 | { | |
1753 | int deleg_status, open_status; | |
1754 | int deleg_flags = 1 << NFS_DELEGATED_STATE; | |
1755 | int open_flags = (1 << NFS_O_RDONLY_STATE) | (1 << NFS_O_WRONLY_STATE) | (1 << NFS_O_RDWR_STATE); | |
1756 | ||
1757 | deleg_status = nfs41_check_expired_stateid(state, &state->stateid, deleg_flags); | |
1758 | open_status = nfs41_check_expired_stateid(state, &state->open_stateid, open_flags); | |
1759 | ||
1760 | if ((deleg_status == NFS_OK) && (open_status == NFS_OK)) | |
1761 | return NFS_OK; | |
f062eb6c BS |
1762 | return nfs4_open_expired(sp, state); |
1763 | } | |
1764 | #endif | |
1765 | ||
aa53ed54 JL |
1766 | /* |
1767 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1768 | * fields corresponding to attributes that were used to store the verifier. | |
1769 | * Make sure we clobber those fields in the later setattr call | |
1770 | */ | |
1771 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1772 | { | |
1773 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1774 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1775 | sattr->ia_valid |= ATTR_ATIME; | |
1776 | ||
1777 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1778 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1779 | sattr->ia_valid |= ATTR_MTIME; | |
1780 | } | |
1781 | ||
1da177e4 | 1782 | /* |
24ac23ab | 1783 | * Returns a referenced nfs4_state |
1da177e4 | 1784 | */ |
82a2c1b7 | 1785 | 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 |
1786 | { |
1787 | struct nfs4_state_owner *sp; | |
1788 | struct nfs4_state *state = NULL; | |
1789 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1790 | struct nfs4_opendata *opendata; |
aac00a8d | 1791 | int status; |
1da177e4 LT |
1792 | |
1793 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 1794 | status = -ENOMEM; |
d1e284d5 TM |
1795 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
1796 | if (sp == NULL) { | |
1da177e4 LT |
1797 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
1798 | goto out_err; | |
1799 | } | |
58d9714a TM |
1800 | status = nfs4_recover_expired_lease(server); |
1801 | if (status != 0) | |
b4454fe1 | 1802 | goto err_put_state_owner; |
82a2c1b7 AV |
1803 | if (dentry->d_inode != NULL) |
1804 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 1805 | status = -ENOMEM; |
82a2c1b7 | 1806 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, GFP_KERNEL); |
e56e0b78 | 1807 | if (opendata == NULL) |
95d35cb4 | 1808 | goto err_put_state_owner; |
1da177e4 | 1809 | |
82a2c1b7 AV |
1810 | if (dentry->d_inode != NULL) |
1811 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 1812 | |
24ac23ab | 1813 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1814 | if (status != 0) |
c6d00e63 | 1815 | goto err_opendata_put; |
1da177e4 | 1816 | |
24ac23ab | 1817 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1818 | status = PTR_ERR(state); |
1819 | if (IS_ERR(state)) | |
c6d00e63 | 1820 | goto err_opendata_put; |
0df5dd4a | 1821 | if (server->caps & NFS_CAP_POSIX_LOCK) |
8e469ebd | 1822 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); |
0ab64e0e TM |
1823 | |
1824 | if (opendata->o_arg.open_flags & O_EXCL) { | |
1825 | nfs4_exclusive_attrset(opendata, sattr); | |
1826 | ||
1827 | nfs_fattr_init(opendata->o_res.f_attr); | |
1828 | status = nfs4_do_setattr(state->inode, cred, | |
1829 | opendata->o_res.f_attr, sattr, | |
1830 | state); | |
1831 | if (status == 0) | |
1832 | nfs_setattr_update_inode(state->inode, sattr); | |
1833 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
1834 | } | |
c6d00e63 | 1835 | nfs4_opendata_put(opendata); |
1da177e4 | 1836 | nfs4_put_state_owner(sp); |
1da177e4 LT |
1837 | *res = state; |
1838 | return 0; | |
c6d00e63 TM |
1839 | err_opendata_put: |
1840 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
1841 | err_put_state_owner: |
1842 | nfs4_put_state_owner(sp); | |
1da177e4 | 1843 | out_err: |
1da177e4 LT |
1844 | *res = NULL; |
1845 | return status; | |
1846 | } | |
1847 | ||
1848 | ||
82a2c1b7 | 1849 | 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 |
1850 | { |
1851 | struct nfs4_exception exception = { }; | |
1852 | struct nfs4_state *res; | |
1853 | int status; | |
1854 | ||
1855 | do { | |
82a2c1b7 | 1856 | status = _nfs4_do_open(dir, dentry, fmode, flags, sattr, cred, &res); |
1da177e4 LT |
1857 | if (status == 0) |
1858 | break; | |
1859 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1860 | * book-keeping w.r.t. state-changing operations | |
1861 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1862 | * It is actually a sign of a bug on the client or on the server. | |
1863 | * | |
1864 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1865 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1866 | * have unhashed the old state_owner for us, and that we can |
1867 | * therefore safely retry using a new one. We should still warn | |
1868 | * the user though... | |
1869 | */ | |
1870 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 1871 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
1872 | " returned a bad sequence-id error!\n", |
1873 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1874 | exception.retry = 1; |
1875 | continue; | |
1876 | } | |
550f5747 TM |
1877 | /* |
1878 | * BAD_STATEID on OPEN means that the server cancelled our | |
1879 | * state before it received the OPEN_CONFIRM. | |
1880 | * Recover by retrying the request as per the discussion | |
1881 | * on Page 181 of RFC3530. | |
1882 | */ | |
1883 | if (status == -NFS4ERR_BAD_STATEID) { | |
1884 | exception.retry = 1; | |
1885 | continue; | |
1886 | } | |
aac00a8d TM |
1887 | if (status == -EAGAIN) { |
1888 | /* We must have found a delegation */ | |
1889 | exception.retry = 1; | |
1890 | continue; | |
1891 | } | |
1da177e4 LT |
1892 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1893 | status, &exception)); | |
1894 | } while (exception.retry); | |
1895 | return res; | |
1896 | } | |
1897 | ||
659bfcd6 TM |
1898 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1899 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1900 | struct nfs4_state *state) | |
1da177e4 | 1901 | { |
3e4f6290 | 1902 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1903 | struct nfs_setattrargs arg = { |
3e4f6290 | 1904 | .fh = NFS_FH(inode), |
1da177e4 LT |
1905 | .iap = sattr, |
1906 | .server = server, | |
1907 | .bitmask = server->attr_bitmask, | |
1908 | }; | |
1909 | struct nfs_setattrres res = { | |
1910 | .fattr = fattr, | |
1911 | .server = server, | |
1912 | }; | |
1913 | struct rpc_message msg = { | |
659bfcd6 TM |
1914 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
1915 | .rpc_argp = &arg, | |
1916 | .rpc_resp = &res, | |
1917 | .rpc_cred = cred, | |
1da177e4 | 1918 | }; |
26e976a8 | 1919 | unsigned long timestamp = jiffies; |
65e4308d | 1920 | int status; |
1da177e4 | 1921 | |
0e574af1 | 1922 | nfs_fattr_init(fattr); |
1da177e4 | 1923 | |
4fc8796d TM |
1924 | if (state != NULL) { |
1925 | nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, | |
1926 | current->files, current->tgid); | |
1927 | } else if (nfs4_copy_delegation_stateid(&arg.stateid, inode, | |
1928 | FMODE_WRITE)) { | |
3e4f6290 | 1929 | /* Use that stateid */ |
08e9eac4 | 1930 | } else |
f597c537 | 1931 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 1932 | |
7c513058 | 1933 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
1934 | if (status == 0 && state != NULL) |
1935 | renew_lease(server, timestamp); | |
65e4308d | 1936 | return status; |
1da177e4 LT |
1937 | } |
1938 | ||
659bfcd6 TM |
1939 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1940 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1941 | struct nfs4_state *state) | |
1da177e4 | 1942 | { |
3e4f6290 | 1943 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
1944 | struct nfs4_exception exception = { |
1945 | .state = state, | |
3114ea7a | 1946 | .inode = inode, |
a1d0b5ee | 1947 | }; |
1da177e4 LT |
1948 | int err; |
1949 | do { | |
451146be TM |
1950 | err = _nfs4_do_setattr(inode, cred, fattr, sattr, state); |
1951 | switch (err) { | |
1952 | case -NFS4ERR_OPENMODE: | |
1953 | if (state && !(state->state & FMODE_WRITE)) { | |
1954 | err = -EBADF; | |
1955 | if (sattr->ia_valid & ATTR_OPEN) | |
1956 | err = -EACCES; | |
1957 | goto out; | |
1958 | } | |
1959 | } | |
1960 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 1961 | } while (exception.retry); |
451146be | 1962 | out: |
1da177e4 LT |
1963 | return err; |
1964 | } | |
1965 | ||
1966 | struct nfs4_closedata { | |
1967 | struct inode *inode; | |
1968 | struct nfs4_state *state; | |
1969 | struct nfs_closeargs arg; | |
1970 | struct nfs_closeres res; | |
516a6af6 | 1971 | struct nfs_fattr fattr; |
26e976a8 | 1972 | unsigned long timestamp; |
f7e8917a FI |
1973 | bool roc; |
1974 | u32 roc_barrier; | |
1da177e4 LT |
1975 | }; |
1976 | ||
963d8fe5 | 1977 | static void nfs4_free_closedata(void *data) |
9512135d | 1978 | { |
963d8fe5 TM |
1979 | struct nfs4_closedata *calldata = data; |
1980 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 1981 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 1982 | |
f7e8917a FI |
1983 | if (calldata->roc) |
1984 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
1985 | nfs4_put_open_state(calldata->state); |
1986 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 1987 | nfs4_put_state_owner(sp); |
643168c2 | 1988 | nfs_sb_deactive(sb); |
9512135d TM |
1989 | kfree(calldata); |
1990 | } | |
1991 | ||
88069f77 TM |
1992 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
1993 | fmode_t fmode) | |
1994 | { | |
1995 | spin_lock(&state->owner->so_lock); | |
1996 | if (!(fmode & FMODE_READ)) | |
1997 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1998 | if (!(fmode & FMODE_WRITE)) | |
1999 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2000 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
2001 | spin_unlock(&state->owner->so_lock); | |
2002 | } | |
2003 | ||
963d8fe5 | 2004 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2005 | { |
963d8fe5 | 2006 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2007 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
2008 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
2009 | ||
a3ca5651 | 2010 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2011 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2012 | return; | |
1da177e4 LT |
2013 | /* hmm. we are done with the inode, and in the process of freeing |
2014 | * the state_owner. we keep this around to process errors | |
2015 | */ | |
1da177e4 LT |
2016 | switch (task->tk_status) { |
2017 | case 0: | |
f7e8917a FI |
2018 | if (calldata->roc) |
2019 | pnfs_roc_set_barrier(state->inode, | |
2020 | calldata->roc_barrier); | |
45328c35 | 2021 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 2022 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
2023 | nfs4_close_clear_stateid_flags(state, |
2024 | calldata->arg.fmode); | |
1da177e4 LT |
2025 | break; |
2026 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
2027 | case -NFS4ERR_OLD_STATEID: |
2028 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2029 | case -NFS4ERR_EXPIRED: |
dc0b027d | 2030 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2031 | break; |
1da177e4 | 2032 | default: |
72211dbe TM |
2033 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
2034 | rpc_restart_call_prepare(task); | |
1da177e4 | 2035 | } |
72211dbe | 2036 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2037 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2038 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2039 | } |
2040 | ||
4ce70ada | 2041 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2042 | { |
4ce70ada | 2043 | struct nfs4_closedata *calldata = data; |
9512135d | 2044 | struct nfs4_state *state = calldata->state; |
88069f77 | 2045 | int call_close = 0; |
9512135d | 2046 | |
a3ca5651 | 2047 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2048 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 2049 | return; |
003707c7 | 2050 | |
88069f77 TM |
2051 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
2052 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 2053 | spin_lock(&state->owner->so_lock); |
003707c7 | 2054 | /* Calculate the change in open mode */ |
e7616923 | 2055 | if (state->n_rdwr == 0) { |
003707c7 | 2056 | if (state->n_rdonly == 0) { |
88069f77 TM |
2057 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
2058 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2059 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
2060 | } |
2061 | if (state->n_wronly == 0) { | |
88069f77 TM |
2062 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
2063 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2064 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 2065 | } |
e7616923 | 2066 | } |
4cecb76f | 2067 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2068 | |
2069 | if (!call_close) { | |
963d8fe5 TM |
2070 | /* Note: exit _without_ calling nfs4_close_done */ |
2071 | task->tk_action = NULL; | |
a3ca5651 | 2072 | goto out; |
9512135d | 2073 | } |
88069f77 | 2074 | |
f7e8917a | 2075 | if (calldata->arg.fmode == 0) { |
88069f77 | 2076 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a FI |
2077 | if (calldata->roc && |
2078 | pnfs_roc_drain(calldata->inode, &calldata->roc_barrier)) { | |
2079 | rpc_sleep_on(&NFS_SERVER(calldata->inode)->roc_rpcwaitq, | |
2080 | task, NULL); | |
a3ca5651 | 2081 | goto out; |
f7e8917a FI |
2082 | } |
2083 | } | |
88069f77 | 2084 | |
516a6af6 | 2085 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2086 | calldata->timestamp = jiffies; |
035168ab | 2087 | if (nfs4_setup_sequence(NFS_SERVER(calldata->inode), |
9d12b216 TM |
2088 | &calldata->arg.seq_args, |
2089 | &calldata->res.seq_res, | |
2090 | task)) | |
a3ca5651 | 2091 | goto out; |
5138fde0 | 2092 | rpc_call_start(task); |
a3ca5651 CL |
2093 | out: |
2094 | dprintk("%s: done!\n", __func__); | |
1da177e4 LT |
2095 | } |
2096 | ||
963d8fe5 | 2097 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2098 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2099 | .rpc_call_done = nfs4_close_done, |
2100 | .rpc_release = nfs4_free_closedata, | |
2101 | }; | |
2102 | ||
1da177e4 LT |
2103 | /* |
2104 | * It is possible for data to be read/written from a mem-mapped file | |
2105 | * after the sys_close call (which hits the vfs layer as a flush). | |
2106 | * This means that we can't safely call nfsv4 close on a file until | |
2107 | * the inode is cleared. This in turn means that we are not good | |
2108 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2109 | * share state even when we are done with one of the three share | |
2110 | * stateid's in the inode. | |
2111 | * | |
2112 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2113 | */ | |
643168c2 | 2114 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait, bool roc) |
1da177e4 | 2115 | { |
4a35bd41 | 2116 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2117 | struct nfs4_closedata *calldata; |
b39e625b TM |
2118 | struct nfs4_state_owner *sp = state->owner; |
2119 | struct rpc_task *task; | |
5138fde0 TM |
2120 | struct rpc_message msg = { |
2121 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2122 | .rpc_cred = state->owner->so_cred, | |
2123 | }; | |
c970aa85 TM |
2124 | struct rpc_task_setup task_setup_data = { |
2125 | .rpc_client = server->client, | |
5138fde0 | 2126 | .rpc_message = &msg, |
c970aa85 | 2127 | .callback_ops = &nfs4_close_ops, |
101070ca | 2128 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2129 | .flags = RPC_TASK_ASYNC, |
2130 | }; | |
9512135d | 2131 | int status = -ENOMEM; |
1da177e4 | 2132 | |
8535b2be | 2133 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2134 | if (calldata == NULL) |
9512135d | 2135 | goto out; |
9d12b216 | 2136 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2137 | calldata->inode = state->inode; |
1da177e4 | 2138 | calldata->state = state; |
4a35bd41 | 2139 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2140 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2141 | /* Serialization for the sequence id */ |
8535b2be | 2142 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2143 | if (calldata->arg.seqid == NULL) |
2144 | goto out_free_calldata; | |
dc0b027d | 2145 | calldata->arg.fmode = 0; |
a65318bf | 2146 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2147 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2148 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2149 | calldata->res.server = server; |
f7e8917a | 2150 | calldata->roc = roc; |
643168c2 | 2151 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2152 | |
1174dd1f TM |
2153 | msg.rpc_argp = &calldata->arg; |
2154 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2155 | task_setup_data.callback_data = calldata; |
2156 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2157 | if (IS_ERR(task)) |
2158 | return PTR_ERR(task); | |
a49c3c77 TM |
2159 | status = 0; |
2160 | if (wait) | |
2161 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2162 | rpc_put_task(task); |
a49c3c77 | 2163 | return status; |
9512135d TM |
2164 | out_free_calldata: |
2165 | kfree(calldata); | |
2166 | out: | |
f7e8917a FI |
2167 | if (roc) |
2168 | pnfs_roc_release(state->inode); | |
b39e625b TM |
2169 | nfs4_put_open_state(state); |
2170 | nfs4_put_state_owner(sp); | |
9512135d | 2171 | return status; |
1da177e4 LT |
2172 | } |
2173 | ||
2b484297 | 2174 | static struct inode * |
cd9a1c0e | 2175 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2176 | { |
1da177e4 | 2177 | struct nfs4_state *state; |
1da177e4 | 2178 | |
565277f6 | 2179 | /* Protect against concurrent sillydeletes */ |
3d4ff43d | 2180 | state = nfs4_do_open(dir, ctx->dentry, ctx->mode, open_flags, attr, ctx->cred); |
f46e0bd3 TM |
2181 | if (IS_ERR(state)) |
2182 | return ERR_CAST(state); | |
cd9a1c0e | 2183 | ctx->state = state; |
f46e0bd3 | 2184 | return igrab(state->inode); |
1da177e4 LT |
2185 | } |
2186 | ||
1185a552 | 2187 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2188 | { |
2189 | if (ctx->state == NULL) | |
2190 | return; | |
2191 | if (is_sync) | |
643168c2 | 2192 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2193 | else |
643168c2 | 2194 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2195 | } |
1da177e4 LT |
2196 | |
2197 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2198 | { | |
43652ad5 BH |
2199 | struct nfs4_server_caps_arg args = { |
2200 | .fhandle = fhandle, | |
2201 | }; | |
1da177e4 LT |
2202 | struct nfs4_server_caps_res res = {}; |
2203 | struct rpc_message msg = { | |
2204 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2205 | .rpc_argp = &args, |
1da177e4 LT |
2206 | .rpc_resp = &res, |
2207 | }; | |
2208 | int status; | |
2209 | ||
7c513058 | 2210 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2211 | if (status == 0) { |
2212 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2213 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2214 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2215 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2216 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2217 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2218 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2219 | server->caps |= NFS_CAP_ACLS; | |
2220 | if (res.has_links != 0) | |
2221 | server->caps |= NFS_CAP_HARDLINKS; | |
2222 | if (res.has_symlinks != 0) | |
2223 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2224 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2225 | server->caps |= NFS_CAP_FILEID; | |
2226 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2227 | server->caps |= NFS_CAP_MODE; | |
2228 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2229 | server->caps |= NFS_CAP_NLINK; | |
2230 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2231 | server->caps |= NFS_CAP_OWNER; | |
2232 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2233 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2234 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2235 | server->caps |= NFS_CAP_ATIME; | |
2236 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2237 | server->caps |= NFS_CAP_CTIME; | |
2238 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2239 | server->caps |= NFS_CAP_MTIME; | |
2240 | ||
a65318bf TM |
2241 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2242 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2243 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 | 2244 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 2245 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 2246 | } |
cccef3b9 | 2247 | |
1da177e4 LT |
2248 | return status; |
2249 | } | |
2250 | ||
55a97593 | 2251 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2252 | { |
2253 | struct nfs4_exception exception = { }; | |
2254 | int err; | |
2255 | do { | |
2256 | err = nfs4_handle_exception(server, | |
2257 | _nfs4_server_capabilities(server, fhandle), | |
2258 | &exception); | |
2259 | } while (exception.retry); | |
2260 | return err; | |
2261 | } | |
2262 | ||
2263 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2264 | struct nfs_fsinfo *info) | |
2265 | { | |
1da177e4 LT |
2266 | struct nfs4_lookup_root_arg args = { |
2267 | .bitmask = nfs4_fattr_bitmap, | |
2268 | }; | |
2269 | struct nfs4_lookup_res res = { | |
2270 | .server = server, | |
0e574af1 | 2271 | .fattr = info->fattr, |
1da177e4 LT |
2272 | .fh = fhandle, |
2273 | }; | |
2274 | struct rpc_message msg = { | |
2275 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2276 | .rpc_argp = &args, | |
2277 | .rpc_resp = &res, | |
2278 | }; | |
008f55d0 | 2279 | |
0e574af1 | 2280 | nfs_fattr_init(info->fattr); |
7c513058 | 2281 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2282 | } |
2283 | ||
2284 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2285 | struct nfs_fsinfo *info) | |
2286 | { | |
2287 | struct nfs4_exception exception = { }; | |
2288 | int err; | |
2289 | do { | |
fb8a5ba8 BS |
2290 | err = _nfs4_lookup_root(server, fhandle, info); |
2291 | switch (err) { | |
2292 | case 0: | |
2293 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 2294 | goto out; |
fb8a5ba8 BS |
2295 | default: |
2296 | err = nfs4_handle_exception(server, err, &exception); | |
2297 | } | |
1da177e4 | 2298 | } while (exception.retry); |
05e9cfb4 | 2299 | out: |
1da177e4 LT |
2300 | return err; |
2301 | } | |
2302 | ||
8f70e95f BS |
2303 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2304 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2305 | { | |
2306 | struct rpc_auth *auth; | |
2307 | int ret; | |
2308 | ||
2309 | auth = rpcauth_create(flavor, server->client); | |
2310 | if (!auth) { | |
2311 | ret = -EIO; | |
2312 | goto out; | |
2313 | } | |
2314 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2315 | out: |
2316 | return ret; | |
2317 | } | |
2318 | ||
801a16dc | 2319 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2320 | struct nfs_fsinfo *info) |
1da177e4 | 2321 | { |
8f70e95f | 2322 | int i, len, status = 0; |
0fabee24 | 2323 | rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS]; |
1da177e4 | 2324 | |
801a16dc BS |
2325 | len = gss_mech_list_pseudoflavors(&flav_array[0]); |
2326 | flav_array[len] = RPC_AUTH_NULL; | |
2327 | len += 1; | |
8f70e95f BS |
2328 | |
2329 | for (i = 0; i < len; i++) { | |
2330 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); | |
fb8a5ba8 | 2331 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2332 | continue; |
2333 | break; | |
8f70e95f | 2334 | } |
fb8a5ba8 BS |
2335 | /* |
2336 | * -EACCESS could mean that the user doesn't have correct permissions | |
2337 | * to access the mount. It could also mean that we tried to mount | |
2338 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2339 | * existing mount programs don't handle -EACCES very well so it should | |
2340 | * be mapped to -EPERM instead. | |
2341 | */ | |
2342 | if (status == -EACCES) | |
2343 | status = -EPERM; | |
801a16dc BS |
2344 | return status; |
2345 | } | |
2346 | ||
2347 | /* | |
2348 | * get the file handle for the "/" directory on the server | |
2349 | */ | |
3028eb2b BS |
2350 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
2351 | struct nfs_fsinfo *info) | |
801a16dc | 2352 | { |
fca78d6d | 2353 | int minor_version = server->nfs_client->cl_minorversion; |
801a16dc | 2354 | int status = nfs4_lookup_root(server, fhandle, info); |
fb8a5ba8 BS |
2355 | if ((status == -NFS4ERR_WRONGSEC) && !(server->flags & NFS_MOUNT_SECFLAVOUR)) |
2356 | /* | |
2357 | * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM | |
2358 | * by nfs4_map_errors() as this function exits. | |
2359 | */ | |
fca78d6d | 2360 | status = nfs_v4_minor_ops[minor_version]->find_root_sec(server, fhandle, info); |
1da177e4 LT |
2361 | if (status == 0) |
2362 | status = nfs4_server_capabilities(server, fhandle); | |
2363 | if (status == 0) | |
2364 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2365 | return nfs4_map_errors(status); |
1da177e4 LT |
2366 | } |
2367 | ||
bae36241 BS |
2368 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
2369 | struct nfs_fsinfo *info) | |
2370 | { | |
2371 | int error; | |
2372 | struct nfs_fattr *fattr = info->fattr; | |
2373 | ||
2374 | error = nfs4_server_capabilities(server, mntfh); | |
2375 | if (error < 0) { | |
2376 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
2377 | return error; | |
2378 | } | |
2379 | ||
2380 | error = nfs4_proc_getattr(server, mntfh, fattr); | |
2381 | if (error < 0) { | |
2382 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
2383 | return error; | |
2384 | } | |
2385 | ||
2386 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
2387 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
2388 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
2389 | ||
2390 | return error; | |
2391 | } | |
2392 | ||
6b97fd3d MN |
2393 | /* |
2394 | * Get locations and (maybe) other attributes of a referral. | |
2395 | * Note that we'll actually follow the referral later when | |
2396 | * we detect fsid mismatch in inode revalidation | |
2397 | */ | |
f05d147f BS |
2398 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
2399 | const struct qstr *name, struct nfs_fattr *fattr, | |
2400 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
2401 | { |
2402 | int status = -ENOMEM; | |
2403 | struct page *page = NULL; | |
2404 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2405 | |
2406 | page = alloc_page(GFP_KERNEL); | |
2407 | if (page == NULL) | |
2408 | goto out; | |
2409 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2410 | if (locations == NULL) | |
2411 | goto out; | |
2412 | ||
f05d147f | 2413 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
2414 | if (status != 0) |
2415 | goto out; | |
2416 | /* Make sure server returned a different fsid for the referral */ | |
2417 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2418 | dprintk("%s: server did not return a different fsid for" |
2419 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2420 | status = -EIO; |
2421 | goto out; | |
2422 | } | |
533eb461 AA |
2423 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2424 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2425 | |
533eb461 | 2426 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2427 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2428 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2429 | out: | |
2430 | if (page) | |
2431 | __free_page(page); | |
5d7ca35a | 2432 | kfree(locations); |
6b97fd3d MN |
2433 | return status; |
2434 | } | |
2435 | ||
1da177e4 LT |
2436 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2437 | { | |
2438 | struct nfs4_getattr_arg args = { | |
2439 | .fh = fhandle, | |
2440 | .bitmask = server->attr_bitmask, | |
2441 | }; | |
2442 | struct nfs4_getattr_res res = { | |
2443 | .fattr = fattr, | |
2444 | .server = server, | |
2445 | }; | |
2446 | struct rpc_message msg = { | |
2447 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2448 | .rpc_argp = &args, | |
2449 | .rpc_resp = &res, | |
2450 | }; | |
2451 | ||
0e574af1 | 2452 | nfs_fattr_init(fattr); |
7c513058 | 2453 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2454 | } |
2455 | ||
2456 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2457 | { | |
2458 | struct nfs4_exception exception = { }; | |
2459 | int err; | |
2460 | do { | |
2461 | err = nfs4_handle_exception(server, | |
2462 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2463 | &exception); | |
2464 | } while (exception.retry); | |
2465 | return err; | |
2466 | } | |
2467 | ||
2468 | /* | |
2469 | * The file is not closed if it is opened due to the a request to change | |
2470 | * the size of the file. The open call will not be needed once the | |
2471 | * VFS layer lookup-intents are implemented. | |
2472 | * | |
2473 | * Close is called when the inode is destroyed. | |
2474 | * If we haven't opened the file for O_WRONLY, we | |
2475 | * need to in the size_change case to obtain a stateid. | |
2476 | * | |
2477 | * Got race? | |
2478 | * Because OPEN is always done by name in nfsv4, it is | |
2479 | * possible that we opened a different file by the same | |
2480 | * name. We can recognize this race condition, but we | |
2481 | * can't do anything about it besides returning an error. | |
2482 | * | |
2483 | * This will be fixed with VFS changes (lookup-intent). | |
2484 | */ | |
2485 | static int | |
2486 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2487 | struct iattr *sattr) | |
2488 | { | |
08e9eac4 | 2489 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2490 | struct rpc_cred *cred = NULL; |
d530838b | 2491 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2492 | int status; |
2493 | ||
8a1636c4 BH |
2494 | if (pnfs_ld_layoutret_on_setattr(inode)) |
2495 | pnfs_return_layout(inode); | |
2496 | ||
0e574af1 | 2497 | nfs_fattr_init(fattr); |
1da177e4 | 2498 | |
d530838b | 2499 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2500 | if (sattr->ia_valid & ATTR_FILE) { |
2501 | struct nfs_open_context *ctx; | |
2502 | ||
2503 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2504 | if (ctx) { |
2505 | cred = ctx->cred; | |
2506 | state = ctx->state; | |
2507 | } | |
659bfcd6 | 2508 | } |
08e9eac4 | 2509 | |
536e43d1 TM |
2510 | /* Deal with open(O_TRUNC) */ |
2511 | if (sattr->ia_valid & ATTR_OPEN) | |
2512 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME|ATTR_OPEN); | |
2513 | ||
659bfcd6 | 2514 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2515 | if (status == 0) |
2516 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2517 | return status; |
2518 | } | |
2519 | ||
0c2e53f1 TM |
2520 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
2521 | const struct qstr *name, struct nfs_fh *fhandle, | |
2522 | struct nfs_fattr *fattr) | |
2b3de441 | 2523 | { |
0c2e53f1 | 2524 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
2525 | int status; |
2526 | struct nfs4_lookup_arg args = { | |
2527 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 2528 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
2529 | .name = name, |
2530 | }; | |
2531 | struct nfs4_lookup_res res = { | |
2532 | .server = server, | |
2533 | .fattr = fattr, | |
2534 | .fh = fhandle, | |
2535 | }; | |
2536 | struct rpc_message msg = { | |
2537 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2538 | .rpc_argp = &args, | |
2539 | .rpc_resp = &res, | |
2540 | }; | |
2541 | ||
2542 | nfs_fattr_init(fattr); | |
2543 | ||
1da177e4 | 2544 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 2545 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2546 | dprintk("NFS reply lookup: %d\n", status); |
2547 | return status; | |
2548 | } | |
2549 | ||
72de53ec | 2550 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 2551 | { |
7ebb9315 | 2552 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 2553 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
2554 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
2555 | fattr->nlink = 2; | |
2556 | } | |
2557 | ||
72de53ec BS |
2558 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
2559 | struct qstr *name, struct nfs_fh *fhandle, | |
2560 | struct nfs_fattr *fattr) | |
1da177e4 LT |
2561 | { |
2562 | struct nfs4_exception exception = { }; | |
72de53ec | 2563 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
2564 | int err; |
2565 | do { | |
72de53ec BS |
2566 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr); |
2567 | switch (err) { | |
08ef7bd3 | 2568 | case -NFS4ERR_BADNAME: |
72de53ec BS |
2569 | err = -ENOENT; |
2570 | goto out; | |
0c2e53f1 | 2571 | case -NFS4ERR_MOVED: |
f05d147f | 2572 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
72de53ec | 2573 | goto out; |
0c2e53f1 | 2574 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
2575 | err = -EPERM; |
2576 | if (client != *clnt) | |
2577 | goto out; | |
2578 | ||
2579 | client = nfs4_create_sec_client(client, dir, name); | |
2580 | if (IS_ERR(client)) | |
2581 | return PTR_ERR(client); | |
2582 | ||
2583 | exception.retry = 1; | |
2584 | break; | |
2585 | default: | |
2586 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 2587 | } |
1da177e4 | 2588 | } while (exception.retry); |
72de53ec BS |
2589 | |
2590 | out: | |
2591 | if (err == 0) | |
2592 | *clnt = client; | |
2593 | else if (client != *clnt) | |
2594 | rpc_shutdown_client(client); | |
2595 | ||
1da177e4 LT |
2596 | return err; |
2597 | } | |
2598 | ||
80a16b21 | 2599 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, |
72de53ec BS |
2600 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2601 | { | |
2602 | int status; | |
2603 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
2604 | ||
2605 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2606 | if (client != NFS_CLIENT(dir)) { | |
2607 | rpc_shutdown_client(client); | |
2608 | nfs_fixup_secinfo_attributes(fattr); | |
2609 | } | |
2610 | return status; | |
2611 | } | |
2612 | ||
f05d147f BS |
2613 | struct rpc_clnt * |
2614 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, | |
2615 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2616 | { | |
2617 | int status; | |
2618 | struct rpc_clnt *client = rpc_clone_client(NFS_CLIENT(dir)); | |
2619 | ||
2620 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2621 | if (status < 0) { | |
2622 | rpc_shutdown_client(client); | |
2623 | return ERR_PTR(status); | |
2624 | } | |
2625 | return client; | |
2626 | } | |
2627 | ||
1da177e4 LT |
2628 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
2629 | { | |
76b32999 | 2630 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2631 | struct nfs4_accessargs args = { |
2632 | .fh = NFS_FH(inode), | |
a4980e78 | 2633 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
2634 | }; |
2635 | struct nfs4_accessres res = { | |
2636 | .server = server, | |
1da177e4 | 2637 | }; |
1da177e4 LT |
2638 | struct rpc_message msg = { |
2639 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2640 | .rpc_argp = &args, | |
2641 | .rpc_resp = &res, | |
2642 | .rpc_cred = entry->cred, | |
2643 | }; | |
2644 | int mode = entry->mask; | |
2645 | int status; | |
2646 | ||
2647 | /* | |
2648 | * Determine which access bits we want to ask for... | |
2649 | */ | |
2650 | if (mode & MAY_READ) | |
2651 | args.access |= NFS4_ACCESS_READ; | |
2652 | if (S_ISDIR(inode->i_mode)) { | |
2653 | if (mode & MAY_WRITE) | |
2654 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2655 | if (mode & MAY_EXEC) | |
2656 | args.access |= NFS4_ACCESS_LOOKUP; | |
2657 | } else { | |
2658 | if (mode & MAY_WRITE) | |
2659 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2660 | if (mode & MAY_EXEC) | |
2661 | args.access |= NFS4_ACCESS_EXECUTE; | |
2662 | } | |
c407d41a TM |
2663 | |
2664 | res.fattr = nfs_alloc_fattr(); | |
2665 | if (res.fattr == NULL) | |
2666 | return -ENOMEM; | |
2667 | ||
7c513058 | 2668 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2669 | if (!status) { |
2670 | entry->mask = 0; | |
2671 | if (res.access & NFS4_ACCESS_READ) | |
2672 | entry->mask |= MAY_READ; | |
2673 | if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE)) | |
2674 | entry->mask |= MAY_WRITE; | |
2675 | if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE)) | |
2676 | entry->mask |= MAY_EXEC; | |
c407d41a | 2677 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2678 | } |
c407d41a | 2679 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2680 | return status; |
2681 | } | |
2682 | ||
2683 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2684 | { | |
2685 | struct nfs4_exception exception = { }; | |
2686 | int err; | |
2687 | do { | |
2688 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2689 | _nfs4_proc_access(inode, entry), | |
2690 | &exception); | |
2691 | } while (exception.retry); | |
2692 | return err; | |
2693 | } | |
2694 | ||
2695 | /* | |
2696 | * TODO: For the time being, we don't try to get any attributes | |
2697 | * along with any of the zero-copy operations READ, READDIR, | |
2698 | * READLINK, WRITE. | |
2699 | * | |
2700 | * In the case of the first three, we want to put the GETATTR | |
2701 | * after the read-type operation -- this is because it is hard | |
2702 | * to predict the length of a GETATTR response in v4, and thus | |
2703 | * align the READ data correctly. This means that the GETATTR | |
2704 | * may end up partially falling into the page cache, and we should | |
2705 | * shift it into the 'tail' of the xdr_buf before processing. | |
2706 | * To do this efficiently, we need to know the total length | |
2707 | * of data received, which doesn't seem to be available outside | |
2708 | * of the RPC layer. | |
2709 | * | |
2710 | * In the case of WRITE, we also want to put the GETATTR after | |
2711 | * the operation -- in this case because we want to make sure | |
2712 | * we get the post-operation mtime and size. This means that | |
2713 | * we can't use xdr_encode_pages() as written: we need a variant | |
2714 | * of it which would leave room in the 'tail' iovec. | |
2715 | * | |
2716 | * Both of these changes to the XDR layer would in fact be quite | |
2717 | * minor, but I decided to leave them for a subsequent patch. | |
2718 | */ | |
2719 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2720 | unsigned int pgbase, unsigned int pglen) | |
2721 | { | |
2722 | struct nfs4_readlink args = { | |
2723 | .fh = NFS_FH(inode), | |
2724 | .pgbase = pgbase, | |
2725 | .pglen = pglen, | |
2726 | .pages = &page, | |
2727 | }; | |
f50c7000 | 2728 | struct nfs4_readlink_res res; |
1da177e4 LT |
2729 | struct rpc_message msg = { |
2730 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2731 | .rpc_argp = &args, | |
f50c7000 | 2732 | .rpc_resp = &res, |
1da177e4 LT |
2733 | }; |
2734 | ||
7c513058 | 2735 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2736 | } |
2737 | ||
2738 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2739 | unsigned int pgbase, unsigned int pglen) | |
2740 | { | |
2741 | struct nfs4_exception exception = { }; | |
2742 | int err; | |
2743 | do { | |
2744 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2745 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2746 | &exception); | |
2747 | } while (exception.retry); | |
2748 | return err; | |
2749 | } | |
2750 | ||
1da177e4 LT |
2751 | /* |
2752 | * Got race? | |
2753 | * We will need to arrange for the VFS layer to provide an atomic open. | |
2754 | * Until then, this create/open method is prone to inefficiency and race | |
2755 | * conditions due to the lookup, create, and open VFS calls from sys_open() | |
2756 | * placed on the wire. | |
2757 | * | |
2758 | * Given the above sorry state of affairs, I'm simply sending an OPEN. | |
2759 | * The file will be opened again in the subsequent VFS open call | |
2760 | * (nfs4_proc_file_open). | |
2761 | * | |
2762 | * The open for read will just hang around to be used by any process that | |
2763 | * opens the file O_RDONLY. This will all be resolved with the VFS changes. | |
2764 | */ | |
2765 | ||
2766 | static int | |
2767 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
c0204fd2 | 2768 | int flags, struct nfs_open_context *ctx) |
1da177e4 | 2769 | { |
82a2c1b7 | 2770 | struct dentry *de = dentry; |
1da177e4 | 2771 | struct nfs4_state *state; |
c0204fd2 TM |
2772 | struct rpc_cred *cred = NULL; |
2773 | fmode_t fmode = 0; | |
1da177e4 LT |
2774 | int status = 0; |
2775 | ||
c0204fd2 TM |
2776 | if (ctx != NULL) { |
2777 | cred = ctx->cred; | |
3d4ff43d | 2778 | de = ctx->dentry; |
c0204fd2 | 2779 | fmode = ctx->mode; |
1da177e4 | 2780 | } |
a8a5da99 | 2781 | sattr->ia_mode &= ~current_umask(); |
82a2c1b7 | 2782 | state = nfs4_do_open(dir, de, fmode, flags, sattr, cred); |
d4d9cdcb | 2783 | d_drop(dentry); |
1da177e4 LT |
2784 | if (IS_ERR(state)) { |
2785 | status = PTR_ERR(state); | |
c0204fd2 | 2786 | goto out; |
1da177e4 | 2787 | } |
d4d9cdcb | 2788 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2789 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
c0204fd2 TM |
2790 | if (ctx != NULL) |
2791 | ctx->state = state; | |
02a913a7 | 2792 | else |
643168c2 | 2793 | nfs4_close_sync(state, fmode); |
1da177e4 LT |
2794 | out: |
2795 | return status; | |
2796 | } | |
2797 | ||
2798 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2799 | { | |
16e42959 | 2800 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2801 | struct nfs_removeargs args = { |
1da177e4 | 2802 | .fh = NFS_FH(dir), |
4fdc17b2 TM |
2803 | .name.len = name->len, |
2804 | .name.name = name->name, | |
16e42959 | 2805 | }; |
4fdc17b2 | 2806 | struct nfs_removeres res = { |
16e42959 | 2807 | .server = server, |
1da177e4 | 2808 | }; |
1da177e4 | 2809 | struct rpc_message msg = { |
4fdc17b2 TM |
2810 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
2811 | .rpc_argp = &args, | |
2812 | .rpc_resp = &res, | |
1da177e4 | 2813 | }; |
778d2817 | 2814 | int status; |
1da177e4 | 2815 | |
7c513058 | 2816 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 2817 | if (status == 0) |
16e42959 | 2818 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
2819 | return status; |
2820 | } | |
2821 | ||
2822 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2823 | { | |
2824 | struct nfs4_exception exception = { }; | |
2825 | int err; | |
2826 | do { | |
2827 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2828 | _nfs4_proc_remove(dir, name), | |
2829 | &exception); | |
2830 | } while (exception.retry); | |
2831 | return err; | |
2832 | } | |
2833 | ||
e4eff1a6 | 2834 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 2835 | { |
e4eff1a6 TM |
2836 | struct nfs_server *server = NFS_SERVER(dir); |
2837 | struct nfs_removeargs *args = msg->rpc_argp; | |
2838 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 2839 | |
e4eff1a6 | 2840 | res->server = server; |
1da177e4 | 2841 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
9d12b216 | 2842 | nfs41_init_sequence(&args->seq_args, &res->seq_res, 1); |
1da177e4 LT |
2843 | } |
2844 | ||
34e137cc BS |
2845 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
2846 | { | |
2847 | if (nfs4_setup_sequence(NFS_SERVER(data->dir), | |
2848 | &data->args.seq_args, | |
2849 | &data->res.seq_res, | |
2850 | task)) | |
2851 | return; | |
2852 | rpc_call_start(task); | |
1da177e4 LT |
2853 | } |
2854 | ||
e4eff1a6 | 2855 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 2856 | { |
e4eff1a6 TM |
2857 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
2858 | ||
14516c3a TM |
2859 | if (!nfs4_sequence_done(task, &res->seq_res)) |
2860 | return 0; | |
9e33bed5 | 2861 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
2862 | return 0; |
2863 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 2864 | return 1; |
1da177e4 LT |
2865 | } |
2866 | ||
d3d4152a JL |
2867 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
2868 | { | |
2869 | struct nfs_server *server = NFS_SERVER(dir); | |
2870 | struct nfs_renameargs *arg = msg->rpc_argp; | |
2871 | struct nfs_renameres *res = msg->rpc_resp; | |
2872 | ||
2873 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 2874 | res->server = server; |
9d12b216 | 2875 | nfs41_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
2876 | } |
2877 | ||
c6bfa1a1 BS |
2878 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
2879 | { | |
2880 | if (nfs4_setup_sequence(NFS_SERVER(data->old_dir), | |
2881 | &data->args.seq_args, | |
2882 | &data->res.seq_res, | |
2883 | task)) | |
2884 | return; | |
2885 | rpc_call_start(task); | |
d3d4152a JL |
2886 | } |
2887 | ||
2888 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
2889 | struct inode *new_dir) | |
2890 | { | |
2891 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
2892 | ||
2893 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
2894 | return 0; | |
2895 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
2896 | return 0; | |
2897 | ||
2898 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 2899 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
2900 | return 1; |
2901 | } | |
2902 | ||
1da177e4 LT |
2903 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
2904 | struct inode *new_dir, struct qstr *new_name) | |
2905 | { | |
6caf2c82 | 2906 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 2907 | struct nfs_renameargs arg = { |
1da177e4 LT |
2908 | .old_dir = NFS_FH(old_dir), |
2909 | .new_dir = NFS_FH(new_dir), | |
2910 | .old_name = old_name, | |
2911 | .new_name = new_name, | |
6caf2c82 | 2912 | }; |
e8582a8b | 2913 | struct nfs_renameres res = { |
6caf2c82 | 2914 | .server = server, |
1da177e4 | 2915 | }; |
1da177e4 LT |
2916 | struct rpc_message msg = { |
2917 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
2918 | .rpc_argp = &arg, | |
2919 | .rpc_resp = &res, | |
2920 | }; | |
011fff72 | 2921 | int status = -ENOMEM; |
1da177e4 | 2922 | |
7c513058 | 2923 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
2924 | if (!status) { |
2925 | update_changeattr(old_dir, &res.old_cinfo); | |
2926 | update_changeattr(new_dir, &res.new_cinfo); | |
2927 | } | |
2928 | return status; | |
2929 | } | |
2930 | ||
2931 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2932 | struct inode *new_dir, struct qstr *new_name) | |
2933 | { | |
2934 | struct nfs4_exception exception = { }; | |
2935 | int err; | |
2936 | do { | |
2937 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
2938 | _nfs4_proc_rename(old_dir, old_name, | |
2939 | new_dir, new_name), | |
2940 | &exception); | |
2941 | } while (exception.retry); | |
2942 | return err; | |
2943 | } | |
2944 | ||
2945 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2946 | { | |
91ba2eee | 2947 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2948 | struct nfs4_link_arg arg = { |
2949 | .fh = NFS_FH(inode), | |
2950 | .dir_fh = NFS_FH(dir), | |
2951 | .name = name, | |
91ba2eee TM |
2952 | .bitmask = server->attr_bitmask, |
2953 | }; | |
91ba2eee TM |
2954 | struct nfs4_link_res res = { |
2955 | .server = server, | |
1da177e4 | 2956 | }; |
1da177e4 LT |
2957 | struct rpc_message msg = { |
2958 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
2959 | .rpc_argp = &arg, | |
91ba2eee | 2960 | .rpc_resp = &res, |
1da177e4 | 2961 | }; |
136f2627 TM |
2962 | int status = -ENOMEM; |
2963 | ||
2964 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 2965 | if (res.fattr == NULL) |
136f2627 | 2966 | goto out; |
1da177e4 | 2967 | |
7c513058 | 2968 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
2969 | if (!status) { |
2970 | update_changeattr(dir, &res.cinfo); | |
73a3d07c | 2971 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 2972 | } |
136f2627 | 2973 | out: |
136f2627 | 2974 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2975 | return status; |
2976 | } | |
2977 | ||
2978 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2979 | { | |
2980 | struct nfs4_exception exception = { }; | |
2981 | int err; | |
2982 | do { | |
2983 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2984 | _nfs4_proc_link(inode, dir, name), | |
2985 | &exception); | |
2986 | } while (exception.retry); | |
2987 | return err; | |
2988 | } | |
2989 | ||
57dc9a57 TM |
2990 | struct nfs4_createdata { |
2991 | struct rpc_message msg; | |
2992 | struct nfs4_create_arg arg; | |
2993 | struct nfs4_create_res res; | |
2994 | struct nfs_fh fh; | |
2995 | struct nfs_fattr fattr; | |
57dc9a57 TM |
2996 | }; |
2997 | ||
2998 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
2999 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
3000 | { | |
3001 | struct nfs4_createdata *data; | |
3002 | ||
3003 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3004 | if (data != NULL) { | |
3005 | struct nfs_server *server = NFS_SERVER(dir); | |
3006 | ||
3007 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
3008 | data->msg.rpc_argp = &data->arg; | |
3009 | data->msg.rpc_resp = &data->res; | |
3010 | data->arg.dir_fh = NFS_FH(dir); | |
3011 | data->arg.server = server; | |
3012 | data->arg.name = name; | |
3013 | data->arg.attrs = sattr; | |
3014 | data->arg.ftype = ftype; | |
3015 | data->arg.bitmask = server->attr_bitmask; | |
3016 | data->res.server = server; | |
3017 | data->res.fh = &data->fh; | |
3018 | data->res.fattr = &data->fattr; | |
57dc9a57 | 3019 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
3020 | } |
3021 | return data; | |
3022 | } | |
3023 | ||
3024 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3025 | { | |
7c513058 | 3026 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3027 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3028 | if (status == 0) { |
3029 | update_changeattr(dir, &data->res.dir_cinfo); | |
57dc9a57 TM |
3030 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); |
3031 | } | |
3032 | return status; | |
3033 | } | |
3034 | ||
3035 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3036 | { | |
3037 | kfree(data); | |
3038 | } | |
3039 | ||
4f390c15 | 3040 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3041 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 3042 | { |
57dc9a57 TM |
3043 | struct nfs4_createdata *data; |
3044 | int status = -ENAMETOOLONG; | |
1da177e4 | 3045 | |
94a6d753 | 3046 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 3047 | goto out; |
4f390c15 | 3048 | |
57dc9a57 TM |
3049 | status = -ENOMEM; |
3050 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
3051 | if (data == NULL) | |
3052 | goto out; | |
3053 | ||
3054 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
3055 | data->arg.u.symlink.pages = &page; | |
3056 | data->arg.u.symlink.len = len; | |
1da177e4 | 3057 | |
57dc9a57 TM |
3058 | status = nfs4_do_create(dir, dentry, data); |
3059 | ||
3060 | nfs4_free_createdata(data); | |
3061 | out: | |
1da177e4 LT |
3062 | return status; |
3063 | } | |
3064 | ||
4f390c15 | 3065 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3066 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
3067 | { |
3068 | struct nfs4_exception exception = { }; | |
3069 | int err; | |
3070 | do { | |
3071 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
3072 | _nfs4_proc_symlink(dir, dentry, page, |
3073 | len, sattr), | |
1da177e4 LT |
3074 | &exception); |
3075 | } while (exception.retry); | |
3076 | return err; | |
3077 | } | |
3078 | ||
3079 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3080 | struct iattr *sattr) | |
3081 | { | |
57dc9a57 TM |
3082 | struct nfs4_createdata *data; |
3083 | int status = -ENOMEM; | |
1da177e4 | 3084 | |
57dc9a57 TM |
3085 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3086 | if (data == NULL) | |
3087 | goto out; | |
3088 | ||
3089 | status = nfs4_do_create(dir, dentry, data); | |
3090 | ||
3091 | nfs4_free_createdata(data); | |
3092 | out: | |
1da177e4 LT |
3093 | return status; |
3094 | } | |
3095 | ||
3096 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3097 | struct iattr *sattr) | |
3098 | { | |
3099 | struct nfs4_exception exception = { }; | |
3100 | int err; | |
a8a5da99 AK |
3101 | |
3102 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3103 | do { |
3104 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3105 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
3106 | &exception); | |
3107 | } while (exception.retry); | |
3108 | return err; | |
3109 | } | |
3110 | ||
3111 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3112 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3113 | { |
3114 | struct inode *dir = dentry->d_inode; | |
3115 | struct nfs4_readdir_arg args = { | |
3116 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3117 | .pages = pages, |
1da177e4 LT |
3118 | .pgbase = 0, |
3119 | .count = count, | |
96d25e53 | 3120 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3121 | .plus = plus, |
1da177e4 LT |
3122 | }; |
3123 | struct nfs4_readdir_res res; | |
3124 | struct rpc_message msg = { | |
3125 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3126 | .rpc_argp = &args, | |
3127 | .rpc_resp = &res, | |
3128 | .rpc_cred = cred, | |
3129 | }; | |
3130 | int status; | |
3131 | ||
3110ff80 | 3132 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
3133 | dentry->d_parent->d_name.name, |
3134 | dentry->d_name.name, | |
3135 | (unsigned long long)cookie); | |
1da177e4 LT |
3136 | nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args); |
3137 | res.pgbase = args.pgbase; | |
7c513058 | 3138 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3139 | if (status >= 0) { |
1da177e4 | 3140 | memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3141 | status += args.pgbase; |
3142 | } | |
c4812998 TM |
3143 | |
3144 | nfs_invalidate_atime(dir); | |
3145 | ||
3110ff80 | 3146 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3147 | return status; |
3148 | } | |
3149 | ||
3150 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3151 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3152 | { |
3153 | struct nfs4_exception exception = { }; | |
3154 | int err; | |
3155 | do { | |
3156 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
3157 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 3158 | pages, count, plus), |
1da177e4 LT |
3159 | &exception); |
3160 | } while (exception.retry); | |
3161 | return err; | |
3162 | } | |
3163 | ||
3164 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3165 | struct iattr *sattr, dev_t rdev) | |
3166 | { | |
57dc9a57 TM |
3167 | struct nfs4_createdata *data; |
3168 | int mode = sattr->ia_mode; | |
3169 | int status = -ENOMEM; | |
1da177e4 LT |
3170 | |
3171 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
3172 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
57dc9a57 TM |
3173 | |
3174 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); | |
3175 | if (data == NULL) | |
3176 | goto out; | |
3177 | ||
1da177e4 | 3178 | if (S_ISFIFO(mode)) |
57dc9a57 | 3179 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3180 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3181 | data->arg.ftype = NF4BLK; |
3182 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3183 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3184 | } |
3185 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3186 | data->arg.ftype = NF4CHR; |
3187 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3188 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 | 3189 | } |
1da177e4 | 3190 | |
57dc9a57 TM |
3191 | status = nfs4_do_create(dir, dentry, data); |
3192 | ||
3193 | nfs4_free_createdata(data); | |
3194 | out: | |
1da177e4 LT |
3195 | return status; |
3196 | } | |
3197 | ||
3198 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3199 | struct iattr *sattr, dev_t rdev) | |
3200 | { | |
3201 | struct nfs4_exception exception = { }; | |
3202 | int err; | |
a8a5da99 AK |
3203 | |
3204 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3205 | do { |
3206 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3207 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
3208 | &exception); | |
3209 | } while (exception.retry); | |
3210 | return err; | |
3211 | } | |
3212 | ||
3213 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3214 | struct nfs_fsstat *fsstat) | |
3215 | { | |
3216 | struct nfs4_statfs_arg args = { | |
3217 | .fh = fhandle, | |
3218 | .bitmask = server->attr_bitmask, | |
3219 | }; | |
24ad148a BH |
3220 | struct nfs4_statfs_res res = { |
3221 | .fsstat = fsstat, | |
3222 | }; | |
1da177e4 LT |
3223 | struct rpc_message msg = { |
3224 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3225 | .rpc_argp = &args, | |
24ad148a | 3226 | .rpc_resp = &res, |
1da177e4 LT |
3227 | }; |
3228 | ||
0e574af1 | 3229 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3230 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3231 | } |
3232 | ||
3233 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3234 | { | |
3235 | struct nfs4_exception exception = { }; | |
3236 | int err; | |
3237 | do { | |
3238 | err = nfs4_handle_exception(server, | |
3239 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3240 | &exception); | |
3241 | } while (exception.retry); | |
3242 | return err; | |
3243 | } | |
3244 | ||
3245 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3246 | struct nfs_fsinfo *fsinfo) | |
3247 | { | |
3248 | struct nfs4_fsinfo_arg args = { | |
3249 | .fh = fhandle, | |
3250 | .bitmask = server->attr_bitmask, | |
3251 | }; | |
3dda5e43 BH |
3252 | struct nfs4_fsinfo_res res = { |
3253 | .fsinfo = fsinfo, | |
3254 | }; | |
1da177e4 LT |
3255 | struct rpc_message msg = { |
3256 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3257 | .rpc_argp = &args, | |
3dda5e43 | 3258 | .rpc_resp = &res, |
1da177e4 LT |
3259 | }; |
3260 | ||
7c513058 | 3261 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3262 | } |
3263 | ||
3264 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3265 | { | |
3266 | struct nfs4_exception exception = { }; | |
3267 | int err; | |
3268 | ||
3269 | do { | |
3270 | err = nfs4_handle_exception(server, | |
3271 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
3272 | &exception); | |
3273 | } while (exception.retry); | |
3274 | return err; | |
3275 | } | |
3276 | ||
3277 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3278 | { | |
0e574af1 | 3279 | nfs_fattr_init(fsinfo->fattr); |
1da177e4 LT |
3280 | return nfs4_do_fsinfo(server, fhandle, fsinfo); |
3281 | } | |
3282 | ||
3283 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3284 | struct nfs_pathconf *pathconf) | |
3285 | { | |
3286 | struct nfs4_pathconf_arg args = { | |
3287 | .fh = fhandle, | |
3288 | .bitmask = server->attr_bitmask, | |
3289 | }; | |
d45b2989 BH |
3290 | struct nfs4_pathconf_res res = { |
3291 | .pathconf = pathconf, | |
3292 | }; | |
1da177e4 LT |
3293 | struct rpc_message msg = { |
3294 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3295 | .rpc_argp = &args, | |
d45b2989 | 3296 | .rpc_resp = &res, |
1da177e4 LT |
3297 | }; |
3298 | ||
3299 | /* None of the pathconf attributes are mandatory to implement */ | |
3300 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3301 | memset(pathconf, 0, sizeof(*pathconf)); | |
3302 | return 0; | |
3303 | } | |
3304 | ||
0e574af1 | 3305 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3306 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3307 | } |
3308 | ||
3309 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3310 | struct nfs_pathconf *pathconf) | |
3311 | { | |
3312 | struct nfs4_exception exception = { }; | |
3313 | int err; | |
3314 | ||
3315 | do { | |
3316 | err = nfs4_handle_exception(server, | |
3317 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3318 | &exception); | |
3319 | } while (exception.retry); | |
3320 | return err; | |
3321 | } | |
3322 | ||
d20581aa BH |
3323 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3324 | { | |
cd841605 | 3325 | nfs_invalidate_atime(data->header->inode); |
d20581aa BH |
3326 | } |
3327 | ||
cbdabc7f | 3328 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3329 | { |
cd841605 | 3330 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
1da177e4 | 3331 | |
9e33bed5 | 3332 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3333 | rpc_restart_call_prepare(task); |
ec06c096 | 3334 | return -EAGAIN; |
1da177e4 | 3335 | } |
8850df99 | 3336 | |
d20581aa | 3337 | __nfs4_read_done_cb(data); |
1da177e4 | 3338 | if (task->tk_status > 0) |
ec06c096 TM |
3339 | renew_lease(server, data->timestamp); |
3340 | return 0; | |
1da177e4 LT |
3341 | } |
3342 | ||
cbdabc7f AA |
3343 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3344 | { | |
3345 | ||
3346 | dprintk("--> %s\n", __func__); | |
3347 | ||
3348 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3349 | return -EAGAIN; | |
3350 | ||
d20581aa BH |
3351 | return data->read_done_cb ? data->read_done_cb(task, data) : |
3352 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
3353 | } |
3354 | ||
bdc7f021 | 3355 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3356 | { |
1da177e4 | 3357 | data->timestamp = jiffies; |
cbdabc7f | 3358 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3359 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
9d12b216 | 3360 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
1da177e4 LT |
3361 | } |
3362 | ||
ea7c3303 BS |
3363 | static void nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) |
3364 | { | |
cd841605 | 3365 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
ea7c3303 BS |
3366 | &data->args.seq_args, |
3367 | &data->res.seq_res, | |
3368 | task)) | |
3369 | return; | |
3370 | rpc_call_start(task); | |
1da177e4 LT |
3371 | } |
3372 | ||
b029bc9b | 3373 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3374 | { |
cd841605 | 3375 | struct inode *inode = data->header->inode; |
1da177e4 | 3376 | |
9e33bed5 | 3377 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3378 | rpc_restart_call_prepare(task); |
788e7a89 | 3379 | return -EAGAIN; |
1da177e4 | 3380 | } |
4f9838c7 | 3381 | if (task->tk_status >= 0) { |
1da177e4 | 3382 | renew_lease(NFS_SERVER(inode), data->timestamp); |
5a37f851 | 3383 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); |
4f9838c7 | 3384 | } |
788e7a89 | 3385 | return 0; |
1da177e4 LT |
3386 | } |
3387 | ||
b029bc9b FI |
3388 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3389 | { | |
3390 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3391 | return -EAGAIN; | |
d20581aa BH |
3392 | return data->write_done_cb ? data->write_done_cb(task, data) : |
3393 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
3394 | } |
3395 | ||
5a37f851 TM |
3396 | static |
3397 | bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data *data) | |
3398 | { | |
3399 | const struct nfs_pgio_header *hdr = data->header; | |
3400 | ||
3401 | /* Don't request attributes for pNFS or O_DIRECT writes */ | |
3402 | if (data->ds_clp != NULL || hdr->dreq != NULL) | |
3403 | return false; | |
3404 | /* Otherwise, request attributes if and only if we don't hold | |
3405 | * a delegation | |
3406 | */ | |
3407 | return nfs_have_delegation(hdr->inode, FMODE_READ) == 0; | |
3408 | } | |
3409 | ||
bdc7f021 | 3410 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3411 | { |
cd841605 | 3412 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
bdc7f021 | 3413 | |
5a37f851 | 3414 | if (!nfs4_write_need_cache_consistency_data(data)) { |
7ffd1064 FI |
3415 | data->args.bitmask = NULL; |
3416 | data->res.fattr = NULL; | |
3417 | } else | |
3418 | data->args.bitmask = server->cache_consistency_bitmask; | |
5a37f851 | 3419 | |
b029bc9b FI |
3420 | if (!data->write_done_cb) |
3421 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3422 | data->res.server = server; |
1da177e4 LT |
3423 | data->timestamp = jiffies; |
3424 | ||
bdc7f021 | 3425 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
9d12b216 | 3426 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3427 | } |
3428 | ||
c6cb80d0 BS |
3429 | static void nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) |
3430 | { | |
cd841605 | 3431 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
c6cb80d0 BS |
3432 | &data->args.seq_args, |
3433 | &data->res.seq_res, | |
3434 | task)) | |
3435 | return; | |
3436 | rpc_call_start(task); | |
1da177e4 LT |
3437 | } |
3438 | ||
0b7c0153 FI |
3439 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
3440 | { | |
3441 | if (nfs4_setup_sequence(NFS_SERVER(data->inode), | |
3442 | &data->args.seq_args, | |
3443 | &data->res.seq_res, | |
3444 | task)) | |
3445 | return; | |
3446 | rpc_call_start(task); | |
3447 | } | |
3448 | ||
3449 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) | |
1da177e4 | 3450 | { |
1da177e4 | 3451 | struct inode *inode = data->inode; |
14516c3a | 3452 | |
9e33bed5 | 3453 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
d00c5d43 | 3454 | rpc_restart_call_prepare(task); |
788e7a89 | 3455 | return -EAGAIN; |
1da177e4 | 3456 | } |
788e7a89 | 3457 | return 0; |
1da177e4 LT |
3458 | } |
3459 | ||
0b7c0153 | 3460 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
3461 | { |
3462 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3463 | return -EAGAIN; | |
0b7c0153 | 3464 | return data->commit_done_cb(task, data); |
5f452431 FI |
3465 | } |
3466 | ||
0b7c0153 | 3467 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 3468 | { |
788e7a89 | 3469 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 3470 | |
0b7c0153 FI |
3471 | if (data->commit_done_cb == NULL) |
3472 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 3473 | data->res.server = server; |
bdc7f021 | 3474 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
9d12b216 | 3475 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3476 | } |
3477 | ||
9bc4e3ca CL |
3478 | struct nfs4_renewdata { |
3479 | struct nfs_client *client; | |
3480 | unsigned long timestamp; | |
3481 | }; | |
3482 | ||
1da177e4 LT |
3483 | /* |
3484 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3485 | * standalone procedure for queueing an asynchronous RENEW. | |
3486 | */ | |
9bc4e3ca | 3487 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3488 | { |
9bc4e3ca CL |
3489 | struct nfs4_renewdata *data = calldata; |
3490 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3491 | |
0851de06 AB |
3492 | if (atomic_read(&clp->cl_count) > 1) |
3493 | nfs4_schedule_state_renewal(clp); | |
3494 | nfs_put_client(clp); | |
9bc4e3ca | 3495 | kfree(data); |
dc96aef9 AB |
3496 | } |
3497 | ||
9bc4e3ca | 3498 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3499 | { |
9bc4e3ca CL |
3500 | struct nfs4_renewdata *data = calldata; |
3501 | struct nfs_client *clp = data->client; | |
3502 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3503 | |
3504 | if (task->tk_status < 0) { | |
95baa25c | 3505 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
3506 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
3507 | return; | |
3508 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 3509 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
3510 | return; |
3511 | } | |
3512 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 3513 | } |
452e9352 | 3514 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3515 | } |
3516 | ||
963d8fe5 TM |
3517 | static const struct rpc_call_ops nfs4_renew_ops = { |
3518 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3519 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3520 | }; |
3521 | ||
2f60ea6b | 3522 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
3523 | { |
3524 | struct rpc_message msg = { | |
3525 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3526 | .rpc_argp = clp, | |
b4454fe1 | 3527 | .rpc_cred = cred, |
1da177e4 | 3528 | }; |
9bc4e3ca | 3529 | struct nfs4_renewdata *data; |
1da177e4 | 3530 | |
2f60ea6b TM |
3531 | if (renew_flags == 0) |
3532 | return 0; | |
0851de06 AB |
3533 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3534 | return -EIO; | |
b569ad34 | 3535 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
3536 | if (data == NULL) |
3537 | return -ENOMEM; | |
3538 | data->client = clp; | |
3539 | data->timestamp = jiffies; | |
1da177e4 | 3540 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, |
9bc4e3ca | 3541 | &nfs4_renew_ops, data); |
1da177e4 LT |
3542 | } |
3543 | ||
8534d4ec | 3544 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3545 | { |
3546 | struct rpc_message msg = { | |
3547 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3548 | .rpc_argp = clp, | |
b4454fe1 | 3549 | .rpc_cred = cred, |
1da177e4 LT |
3550 | }; |
3551 | unsigned long now = jiffies; | |
3552 | int status; | |
3553 | ||
3554 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3555 | if (status < 0) | |
3556 | return status; | |
452e9352 | 3557 | do_renew_lease(clp, now); |
1da177e4 LT |
3558 | return 0; |
3559 | } | |
3560 | ||
aa1870af BF |
3561 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3562 | { | |
3563 | return (server->caps & NFS_CAP_ACLS) | |
3564 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3565 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3566 | } | |
3567 | ||
3568 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that | |
3569 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on | |
3570 | * the stack. | |
3571 | */ | |
3572 | #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT) | |
3573 | ||
e9e3d724 NH |
3574 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
3575 | struct page **pages, unsigned int *pgbase) | |
3576 | { | |
3577 | struct page *newpage, **spages; | |
3578 | int rc = 0; | |
3579 | size_t len; | |
3580 | spages = pages; | |
3581 | ||
3582 | do { | |
43b7c3f0 | 3583 | len = min_t(size_t, PAGE_CACHE_SIZE, buflen); |
e9e3d724 NH |
3584 | newpage = alloc_page(GFP_KERNEL); |
3585 | ||
3586 | if (newpage == NULL) | |
3587 | goto unwind; | |
3588 | memcpy(page_address(newpage), buf, len); | |
3589 | buf += len; | |
3590 | buflen -= len; | |
3591 | *pages++ = newpage; | |
3592 | rc++; | |
3593 | } while (buflen != 0); | |
3594 | ||
3595 | return rc; | |
3596 | ||
3597 | unwind: | |
3598 | for(; rc > 0; rc--) | |
3599 | __free_page(spages[rc-1]); | |
3600 | return -ENOMEM; | |
3601 | } | |
3602 | ||
e50a1c2e BF |
3603 | struct nfs4_cached_acl { |
3604 | int cached; | |
3605 | size_t len; | |
3e9d4154 | 3606 | char data[0]; |
e50a1c2e BF |
3607 | }; |
3608 | ||
3609 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3610 | { | |
3611 | struct nfs_inode *nfsi = NFS_I(inode); | |
3612 | ||
3613 | spin_lock(&inode->i_lock); | |
3614 | kfree(nfsi->nfs4_acl); | |
3615 | nfsi->nfs4_acl = acl; | |
3616 | spin_unlock(&inode->i_lock); | |
3617 | } | |
3618 | ||
3619 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3620 | { | |
3621 | nfs4_set_cached_acl(inode, NULL); | |
3622 | } | |
3623 | ||
3624 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3625 | { | |
3626 | struct nfs_inode *nfsi = NFS_I(inode); | |
3627 | struct nfs4_cached_acl *acl; | |
3628 | int ret = -ENOENT; | |
3629 | ||
3630 | spin_lock(&inode->i_lock); | |
3631 | acl = nfsi->nfs4_acl; | |
3632 | if (acl == NULL) | |
3633 | goto out; | |
3634 | if (buf == NULL) /* user is just asking for length */ | |
3635 | goto out_len; | |
3636 | if (acl->cached == 0) | |
3637 | goto out; | |
3638 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3639 | if (acl->len > buflen) | |
3640 | goto out; | |
3641 | memcpy(buf, acl->data, acl->len); | |
3642 | out_len: | |
3643 | ret = acl->len; | |
3644 | out: | |
3645 | spin_unlock(&inode->i_lock); | |
3646 | return ret; | |
3647 | } | |
3648 | ||
5794d21e | 3649 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
3650 | { |
3651 | struct nfs4_cached_acl *acl; | |
3652 | ||
5794d21e | 3653 | if (pages && acl_len <= PAGE_SIZE) { |
e50a1c2e BF |
3654 | acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL); |
3655 | if (acl == NULL) | |
3656 | goto out; | |
3657 | acl->cached = 1; | |
5794d21e | 3658 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
3659 | } else { |
3660 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3661 | if (acl == NULL) | |
3662 | goto out; | |
3663 | acl->cached = 0; | |
3664 | } | |
3665 | acl->len = acl_len; | |
3666 | out: | |
3667 | nfs4_set_cached_acl(inode, acl); | |
3668 | } | |
3669 | ||
bf118a34 AA |
3670 | /* |
3671 | * The getxattr API returns the required buffer length when called with a | |
3672 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
3673 | * the required buf. On a NULL buf, we send a page of data to the server | |
3674 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
3675 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
3676 | * the cache. If not so, we throw away the page, and cache the required | |
3677 | * length. The next getxattr call will then produce another round trip to | |
3678 | * the server, this time with the input buf of the required size. | |
3679 | */ | |
16b4289c | 3680 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3681 | { |
bf118a34 | 3682 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
3683 | struct nfs_getaclargs args = { |
3684 | .fh = NFS_FH(inode), | |
3685 | .acl_pages = pages, | |
3686 | .acl_len = buflen, | |
3687 | }; | |
663c79b3 BH |
3688 | struct nfs_getaclres res = { |
3689 | .acl_len = buflen, | |
3690 | }; | |
aa1870af BF |
3691 | struct rpc_message msg = { |
3692 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3693 | .rpc_argp = &args, | |
663c79b3 | 3694 | .rpc_resp = &res, |
aa1870af | 3695 | }; |
bf118a34 | 3696 | int ret = -ENOMEM, npages, i, acl_len = 0; |
aa1870af | 3697 | |
bf118a34 AA |
3698 | npages = (buflen + PAGE_SIZE - 1) >> PAGE_SHIFT; |
3699 | /* As long as we're doing a round trip to the server anyway, | |
3700 | * let's be prepared for a page of acl data. */ | |
3701 | if (npages == 0) | |
3702 | npages = 1; | |
3703 | ||
5a006899 SP |
3704 | /* Add an extra page to handle the bitmap returned */ |
3705 | npages++; | |
3706 | ||
bf118a34 AA |
3707 | for (i = 0; i < npages; i++) { |
3708 | pages[i] = alloc_page(GFP_KERNEL); | |
3709 | if (!pages[i]) | |
3710 | goto out_free; | |
e50a1c2e | 3711 | } |
5a006899 SP |
3712 | |
3713 | /* for decoding across pages */ | |
3714 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
3715 | if (!res.acl_scratch) | |
3716 | goto out_free; | |
3717 | ||
bf118a34 AA |
3718 | args.acl_len = npages * PAGE_SIZE; |
3719 | args.acl_pgbase = 0; | |
5a006899 | 3720 | |
bf118a34 AA |
3721 | /* Let decode_getfacl know not to fail if the ACL data is larger than |
3722 | * the page we send as a guess */ | |
3723 | if (buf == NULL) | |
3724 | res.acl_flags |= NFS4_ACL_LEN_REQUEST; | |
bf118a34 | 3725 | |
de040bec | 3726 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
3727 | __func__, buf, buflen, npages, args.acl_len); |
3728 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
3729 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
3730 | if (ret) |
3731 | goto out_free; | |
bf118a34 AA |
3732 | |
3733 | acl_len = res.acl_len - res.acl_data_offset; | |
3734 | if (acl_len > args.acl_len) | |
5794d21e | 3735 | nfs4_write_cached_acl(inode, NULL, 0, acl_len); |
e50a1c2e | 3736 | else |
5794d21e | 3737 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, |
bf118a34 | 3738 | acl_len); |
e50a1c2e BF |
3739 | if (buf) { |
3740 | ret = -ERANGE; | |
bf118a34 | 3741 | if (acl_len > buflen) |
e50a1c2e | 3742 | goto out_free; |
bf118a34 | 3743 | _copy_from_pages(buf, pages, res.acl_data_offset, |
20e0fa98 | 3744 | acl_len); |
e50a1c2e | 3745 | } |
bf118a34 | 3746 | ret = acl_len; |
e50a1c2e | 3747 | out_free: |
bf118a34 AA |
3748 | for (i = 0; i < npages; i++) |
3749 | if (pages[i]) | |
3750 | __free_page(pages[i]); | |
331818f1 TM |
3751 | if (res.acl_scratch) |
3752 | __free_page(res.acl_scratch); | |
aa1870af BF |
3753 | return ret; |
3754 | } | |
3755 | ||
16b4289c TM |
3756 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
3757 | { | |
3758 | struct nfs4_exception exception = { }; | |
3759 | ssize_t ret; | |
3760 | do { | |
3761 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
3762 | if (ret >= 0) | |
3763 | break; | |
3764 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
3765 | } while (exception.retry); | |
3766 | return ret; | |
3767 | } | |
3768 | ||
e50a1c2e BF |
3769 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
3770 | { | |
3771 | struct nfs_server *server = NFS_SERVER(inode); | |
3772 | int ret; | |
3773 | ||
3774 | if (!nfs4_server_supports_acls(server)) | |
3775 | return -EOPNOTSUPP; | |
3776 | ret = nfs_revalidate_inode(server, inode); | |
3777 | if (ret < 0) | |
3778 | return ret; | |
08a22b39 AK |
3779 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
3780 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
3781 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
3782 | if (ret != -ENOENT) | |
bf118a34 AA |
3783 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
3784 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
3785 | return ret; |
3786 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
3787 | } | |
3788 | ||
16b4289c | 3789 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
3790 | { |
3791 | struct nfs_server *server = NFS_SERVER(inode); | |
3792 | struct page *pages[NFS4ACL_MAXPAGES]; | |
3793 | struct nfs_setaclargs arg = { | |
3794 | .fh = NFS_FH(inode), | |
3795 | .acl_pages = pages, | |
3796 | .acl_len = buflen, | |
3797 | }; | |
73c403a9 | 3798 | struct nfs_setaclres res; |
4b580ee3 BF |
3799 | struct rpc_message msg = { |
3800 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
3801 | .rpc_argp = &arg, | |
73c403a9 | 3802 | .rpc_resp = &res, |
4b580ee3 | 3803 | }; |
e9e3d724 | 3804 | int ret, i; |
4b580ee3 BF |
3805 | |
3806 | if (!nfs4_server_supports_acls(server)) | |
3807 | return -EOPNOTSUPP; | |
e9e3d724 NH |
3808 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
3809 | if (i < 0) | |
3810 | return i; | |
642ac549 | 3811 | nfs_inode_return_delegation(inode); |
7c513058 | 3812 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
3813 | |
3814 | /* | |
3815 | * Free each page after tx, so the only ref left is | |
3816 | * held by the network stack | |
3817 | */ | |
3818 | for (; i > 0; i--) | |
3819 | put_page(pages[i-1]); | |
3820 | ||
08a22b39 AK |
3821 | /* |
3822 | * Acl update can result in inode attribute update. | |
3823 | * so mark the attribute cache invalid. | |
3824 | */ | |
3825 | spin_lock(&inode->i_lock); | |
3826 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
3827 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
3828 | nfs_access_zap_cache(inode); |
3829 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
3830 | return ret; |
3831 | } | |
3832 | ||
16b4289c TM |
3833 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
3834 | { | |
3835 | struct nfs4_exception exception = { }; | |
3836 | int err; | |
3837 | do { | |
3838 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3839 | __nfs4_proc_set_acl(inode, buf, buflen), | |
3840 | &exception); | |
3841 | } while (exception.retry); | |
3842 | return err; | |
3843 | } | |
3844 | ||
1da177e4 | 3845 | static int |
aa5190d0 | 3846 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 3847 | { |
aa5190d0 TM |
3848 | struct nfs_client *clp = server->nfs_client; |
3849 | ||
3850 | if (task->tk_status >= 0) | |
1da177e4 LT |
3851 | return 0; |
3852 | switch(task->tk_status) { | |
a1d0b5ee | 3853 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
3854 | case -NFS4ERR_ADMIN_REVOKED: |
3855 | case -NFS4ERR_BAD_STATEID: | |
14977489 TM |
3856 | if (state == NULL) |
3857 | break; | |
3858 | nfs_remove_bad_delegation(state->inode); | |
9e33bed5 TM |
3859 | case -NFS4ERR_OPENMODE: |
3860 | if (state == NULL) | |
3861 | break; | |
0400a6b0 TM |
3862 | nfs4_schedule_stateid_recovery(server, state); |
3863 | goto wait_on_recovery; | |
0ced63d1 TM |
3864 | case -NFS4ERR_EXPIRED: |
3865 | if (state != NULL) | |
3866 | nfs4_schedule_stateid_recovery(server, state); | |
1da177e4 | 3867 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 3868 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
3869 | nfs4_schedule_lease_recovery(clp); |
3870 | goto wait_on_recovery; | |
4745e315 AA |
3871 | #if defined(CONFIG_NFS_V4_1) |
3872 | case -NFS4ERR_BADSESSION: | |
3873 | case -NFS4ERR_BADSLOT: | |
3874 | case -NFS4ERR_BAD_HIGH_SLOT: | |
3875 | case -NFS4ERR_DEADSESSION: | |
3876 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
3877 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
3878 | case -NFS4ERR_SEQ_MISORDERED: | |
3879 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
3880 | task->tk_status); | |
0400a6b0 | 3881 | nfs4_schedule_session_recovery(clp->cl_session); |
4745e315 AA |
3882 | task->tk_status = 0; |
3883 | return -EAGAIN; | |
3884 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 3885 | case -NFS4ERR_DELAY: |
aa5190d0 | 3886 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 3887 | case -NFS4ERR_GRACE: |
2c643488 | 3888 | case -EKEYEXPIRED: |
1da177e4 LT |
3889 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
3890 | task->tk_status = 0; | |
3891 | return -EAGAIN; | |
a8a4ae3a | 3892 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
3893 | case -NFS4ERR_OLD_STATEID: |
3894 | task->tk_status = 0; | |
3895 | return -EAGAIN; | |
3896 | } | |
3897 | task->tk_status = nfs4_map_errors(task->tk_status); | |
3898 | return 0; | |
0400a6b0 | 3899 | wait_on_recovery: |
a2c0b9e2 | 3900 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
3901 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
3902 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
3903 | task->tk_status = 0; | |
3904 | return -EAGAIN; | |
1da177e4 LT |
3905 | } |
3906 | ||
f092075d CL |
3907 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
3908 | nfs4_verifier *bootverf) | |
cd93710e CL |
3909 | { |
3910 | __be32 verf[2]; | |
3911 | ||
2c820d9a CL |
3912 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
3913 | /* An impossible timestamp guarantees this value | |
3914 | * will never match a generated boot time. */ | |
3915 | verf[0] = 0; | |
3916 | verf[1] = (__be32)(NSEC_PER_SEC + 1); | |
3917 | } else { | |
f092075d CL |
3918 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
3919 | verf[0] = (__be32)nn->boot_time.tv_sec; | |
3920 | verf[1] = (__be32)nn->boot_time.tv_nsec; | |
2c820d9a | 3921 | } |
cd93710e CL |
3922 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
3923 | } | |
3924 | ||
bb8b27e5 TM |
3925 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
3926 | unsigned short port, struct rpc_cred *cred, | |
3927 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
3928 | { |
3929 | nfs4_verifier sc_verifier; | |
3930 | struct nfs4_setclientid setclientid = { | |
3931 | .sc_verifier = &sc_verifier, | |
3932 | .sc_prog = program, | |
f4eecd5d | 3933 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
3934 | }; |
3935 | struct rpc_message msg = { | |
3936 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
3937 | .rpc_argp = &setclientid, | |
bb8b27e5 | 3938 | .rpc_resp = res, |
286d7d6a | 3939 | .rpc_cred = cred, |
1da177e4 | 3940 | }; |
1da177e4 LT |
3941 | int loop = 0; |
3942 | int status; | |
3943 | ||
f092075d | 3944 | nfs4_init_boot_verifier(clp, &sc_verifier); |
1da177e4 LT |
3945 | |
3946 | for(;;) { | |
2446ab60 | 3947 | rcu_read_lock(); |
1da177e4 | 3948 | setclientid.sc_name_len = scnprintf(setclientid.sc_name, |
69dd716c | 3949 | sizeof(setclientid.sc_name), "%s/%s %s %s %u", |
d4d3c507 CL |
3950 | clp->cl_ipaddr, |
3951 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3952 | RPC_DISPLAY_ADDR), | |
69dd716c TM |
3953 | rpc_peeraddr2str(clp->cl_rpcclient, |
3954 | RPC_DISPLAY_PROTO), | |
78ea323b | 3955 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
1da177e4 LT |
3956 | clp->cl_id_uniquifier); |
3957 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, | |
d4d3c507 CL |
3958 | sizeof(setclientid.sc_netid), |
3959 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3960 | RPC_DISPLAY_NETID)); | |
1da177e4 | 3961 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 3962 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 | 3963 | clp->cl_ipaddr, port >> 8, port & 255); |
2446ab60 | 3964 | rcu_read_unlock(); |
1da177e4 | 3965 | |
1bd714f2 | 3966 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
3967 | if (status != -NFS4ERR_CLID_INUSE) |
3968 | break; | |
fd954ae1 TM |
3969 | if (loop != 0) { |
3970 | ++clp->cl_id_uniquifier; | |
1da177e4 | 3971 | break; |
fd954ae1 TM |
3972 | } |
3973 | ++loop; | |
3974 | ssleep(clp->cl_lease_time / HZ + 1); | |
1da177e4 LT |
3975 | } |
3976 | return status; | |
3977 | } | |
3978 | ||
fd954ae1 | 3979 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
3980 | struct nfs4_setclientid_res *arg, |
3981 | struct rpc_cred *cred) | |
1da177e4 LT |
3982 | { |
3983 | struct nfs_fsinfo fsinfo; | |
3984 | struct rpc_message msg = { | |
3985 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 3986 | .rpc_argp = arg, |
1da177e4 | 3987 | .rpc_resp = &fsinfo, |
286d7d6a | 3988 | .rpc_cred = cred, |
1da177e4 LT |
3989 | }; |
3990 | unsigned long now; | |
3991 | int status; | |
3992 | ||
3993 | now = jiffies; | |
1bd714f2 | 3994 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
3995 | if (status == 0) { |
3996 | spin_lock(&clp->cl_lock); | |
3997 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
3998 | clp->cl_last_renewal = now; | |
3999 | spin_unlock(&clp->cl_lock); | |
4000 | } | |
4001 | return status; | |
4002 | } | |
4003 | ||
fe650407 TM |
4004 | struct nfs4_delegreturndata { |
4005 | struct nfs4_delegreturnargs args; | |
fa178f29 | 4006 | struct nfs4_delegreturnres res; |
fe650407 TM |
4007 | struct nfs_fh fh; |
4008 | nfs4_stateid stateid; | |
26e976a8 | 4009 | unsigned long timestamp; |
fa178f29 | 4010 | struct nfs_fattr fattr; |
fe650407 TM |
4011 | int rpc_status; |
4012 | }; | |
4013 | ||
fe650407 TM |
4014 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
4015 | { | |
4016 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 4017 | |
14516c3a TM |
4018 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4019 | return; | |
938e1010 | 4020 | |
79708861 RL |
4021 | switch (task->tk_status) { |
4022 | case -NFS4ERR_STALE_STATEID: | |
4023 | case -NFS4ERR_EXPIRED: | |
4024 | case 0: | |
fa178f29 | 4025 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
4026 | break; |
4027 | default: | |
4028 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
4029 | -EAGAIN) { | |
d00c5d43 | 4030 | rpc_restart_call_prepare(task); |
79708861 RL |
4031 | return; |
4032 | } | |
4033 | } | |
4034 | data->rpc_status = task->tk_status; | |
fe650407 TM |
4035 | } |
4036 | ||
4037 | static void nfs4_delegreturn_release(void *calldata) | |
4038 | { | |
fe650407 TM |
4039 | kfree(calldata); |
4040 | } | |
4041 | ||
938e1010 AA |
4042 | #if defined(CONFIG_NFS_V4_1) |
4043 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
4044 | { | |
4045 | struct nfs4_delegreturndata *d_data; | |
4046 | ||
4047 | d_data = (struct nfs4_delegreturndata *)data; | |
4048 | ||
035168ab | 4049 | if (nfs4_setup_sequence(d_data->res.server, |
938e1010 | 4050 | &d_data->args.seq_args, |
9d12b216 | 4051 | &d_data->res.seq_res, task)) |
938e1010 AA |
4052 | return; |
4053 | rpc_call_start(task); | |
4054 | } | |
4055 | #endif /* CONFIG_NFS_V4_1 */ | |
4056 | ||
c8d149f3 | 4057 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
4058 | #if defined(CONFIG_NFS_V4_1) |
4059 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
4060 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
4061 | .rpc_call_done = nfs4_delegreturn_done, |
4062 | .rpc_release = nfs4_delegreturn_release, | |
4063 | }; | |
4064 | ||
e6f81075 | 4065 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
4066 | { |
4067 | struct nfs4_delegreturndata *data; | |
fa178f29 | 4068 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 4069 | struct rpc_task *task; |
5138fde0 TM |
4070 | struct rpc_message msg = { |
4071 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
4072 | .rpc_cred = cred, | |
4073 | }; | |
c970aa85 TM |
4074 | struct rpc_task_setup task_setup_data = { |
4075 | .rpc_client = server->client, | |
5138fde0 | 4076 | .rpc_message = &msg, |
c970aa85 TM |
4077 | .callback_ops = &nfs4_delegreturn_ops, |
4078 | .flags = RPC_TASK_ASYNC, | |
4079 | }; | |
e6f81075 | 4080 | int status = 0; |
fe650407 | 4081 | |
8535b2be | 4082 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
4083 | if (data == NULL) |
4084 | return -ENOMEM; | |
9d12b216 | 4085 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
4086 | data->args.fhandle = &data->fh; |
4087 | data->args.stateid = &data->stateid; | |
9e907fec | 4088 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 4089 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 4090 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
4091 | data->res.fattr = &data->fattr; |
4092 | data->res.server = server; | |
5138fde0 | 4093 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 4094 | data->timestamp = jiffies; |
fe650407 TM |
4095 | data->rpc_status = 0; |
4096 | ||
c970aa85 | 4097 | task_setup_data.callback_data = data; |
1174dd1f TM |
4098 | msg.rpc_argp = &data->args; |
4099 | msg.rpc_resp = &data->res; | |
c970aa85 | 4100 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 4101 | if (IS_ERR(task)) |
fe650407 | 4102 | return PTR_ERR(task); |
e6f81075 TM |
4103 | if (!issync) |
4104 | goto out; | |
fe650407 | 4105 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
4106 | if (status != 0) |
4107 | goto out; | |
4108 | status = data->rpc_status; | |
e144cbcc TM |
4109 | if (status == 0) |
4110 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
4111 | else | |
4112 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 4113 | out: |
e6b3c4db | 4114 | rpc_put_task(task); |
fe650407 | 4115 | return status; |
1da177e4 LT |
4116 | } |
4117 | ||
e6f81075 | 4118 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
4119 | { |
4120 | struct nfs_server *server = NFS_SERVER(inode); | |
4121 | struct nfs4_exception exception = { }; | |
4122 | int err; | |
4123 | do { | |
e6f81075 | 4124 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
4125 | switch (err) { |
4126 | case -NFS4ERR_STALE_STATEID: | |
4127 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
4128 | case 0: |
4129 | return 0; | |
4130 | } | |
4131 | err = nfs4_handle_exception(server, err, &exception); | |
4132 | } while (exception.retry); | |
4133 | return err; | |
4134 | } | |
4135 | ||
4136 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
4137 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
4138 | ||
4139 | /* | |
4140 | * sleep, with exponential backoff, and retry the LOCK operation. | |
4141 | */ | |
4142 | static unsigned long | |
4143 | nfs4_set_lock_task_retry(unsigned long timeout) | |
4144 | { | |
d310310c | 4145 | freezable_schedule_timeout_killable(timeout); |
1da177e4 LT |
4146 | timeout <<= 1; |
4147 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
4148 | return NFS4_LOCK_MAXTIMEOUT; | |
4149 | return timeout; | |
4150 | } | |
4151 | ||
1da177e4 LT |
4152 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4153 | { | |
4154 | struct inode *inode = state->inode; | |
4155 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 4156 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 4157 | struct nfs_lockt_args arg = { |
1da177e4 | 4158 | .fh = NFS_FH(inode), |
911d1aaf | 4159 | .fl = request, |
1da177e4 | 4160 | }; |
911d1aaf TM |
4161 | struct nfs_lockt_res res = { |
4162 | .denied = request, | |
1da177e4 LT |
4163 | }; |
4164 | struct rpc_message msg = { | |
4165 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
4166 | .rpc_argp = &arg, | |
4167 | .rpc_resp = &res, | |
4168 | .rpc_cred = state->owner->so_cred, | |
4169 | }; | |
1da177e4 LT |
4170 | struct nfs4_lock_state *lsp; |
4171 | int status; | |
4172 | ||
911d1aaf | 4173 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
4174 | status = nfs4_set_lock_state(state, request); |
4175 | if (status != 0) | |
4176 | goto out; | |
4177 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 4178 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4179 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 4180 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
4181 | switch (status) { |
4182 | case 0: | |
4183 | request->fl_type = F_UNLCK; | |
4184 | break; | |
4185 | case -NFS4ERR_DENIED: | |
4186 | status = 0; | |
1da177e4 | 4187 | } |
70cc6487 | 4188 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 4189 | out: |
1da177e4 LT |
4190 | return status; |
4191 | } | |
4192 | ||
4193 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4194 | { | |
4195 | struct nfs4_exception exception = { }; | |
4196 | int err; | |
4197 | ||
4198 | do { | |
4199 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
4200 | _nfs4_proc_getlk(state, cmd, request), | |
4201 | &exception); | |
4202 | } while (exception.retry); | |
4203 | return err; | |
4204 | } | |
4205 | ||
4206 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
4207 | { | |
4208 | int res = 0; | |
4209 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
4210 | case FL_POSIX: | |
4211 | res = posix_lock_file_wait(file, fl); | |
4212 | break; | |
4213 | case FL_FLOCK: | |
4214 | res = flock_lock_file_wait(file, fl); | |
4215 | break; | |
4216 | default: | |
4217 | BUG(); | |
4218 | } | |
1da177e4 LT |
4219 | return res; |
4220 | } | |
4221 | ||
faf5f49c | 4222 | struct nfs4_unlockdata { |
911d1aaf TM |
4223 | struct nfs_locku_args arg; |
4224 | struct nfs_locku_res res; | |
faf5f49c TM |
4225 | struct nfs4_lock_state *lsp; |
4226 | struct nfs_open_context *ctx; | |
911d1aaf TM |
4227 | struct file_lock fl; |
4228 | const struct nfs_server *server; | |
26e976a8 | 4229 | unsigned long timestamp; |
faf5f49c TM |
4230 | }; |
4231 | ||
911d1aaf TM |
4232 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
4233 | struct nfs_open_context *ctx, | |
4234 | struct nfs4_lock_state *lsp, | |
4235 | struct nfs_seqid *seqid) | |
4236 | { | |
4237 | struct nfs4_unlockdata *p; | |
4238 | struct inode *inode = lsp->ls_state->inode; | |
4239 | ||
8535b2be | 4240 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
4241 | if (p == NULL) |
4242 | return NULL; | |
4243 | p->arg.fh = NFS_FH(inode); | |
4244 | p->arg.fl = &p->fl; | |
4245 | p->arg.seqid = seqid; | |
c1d51931 | 4246 | p->res.seqid = seqid; |
911d1aaf TM |
4247 | p->arg.stateid = &lsp->ls_stateid; |
4248 | p->lsp = lsp; | |
4249 | atomic_inc(&lsp->ls_count); | |
4250 | /* Ensure we don't close file until we're done freeing locks! */ | |
4251 | p->ctx = get_nfs_open_context(ctx); | |
4252 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4253 | p->server = NFS_SERVER(inode); | |
4254 | return p; | |
4255 | } | |
4256 | ||
06f814a3 | 4257 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 4258 | { |
963d8fe5 | 4259 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 4260 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
4261 | nfs4_put_lock_state(calldata->lsp); |
4262 | put_nfs_open_context(calldata->ctx); | |
4263 | kfree(calldata); | |
faf5f49c TM |
4264 | } |
4265 | ||
963d8fe5 | 4266 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 4267 | { |
963d8fe5 | 4268 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4269 | |
14516c3a TM |
4270 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
4271 | return; | |
faf5f49c TM |
4272 | switch (task->tk_status) { |
4273 | case 0: | |
f597c537 TM |
4274 | nfs4_stateid_copy(&calldata->lsp->ls_stateid, |
4275 | &calldata->res.stateid); | |
26e976a8 | 4276 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 4277 | break; |
9e33bed5 TM |
4278 | case -NFS4ERR_BAD_STATEID: |
4279 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
4280 | case -NFS4ERR_STALE_STATEID: |
4281 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
4282 | break; |
4283 | default: | |
9e33bed5 | 4284 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
d00c5d43 | 4285 | rpc_restart_call_prepare(task); |
faf5f49c | 4286 | } |
faf5f49c TM |
4287 | } |
4288 | ||
4ce70ada | 4289 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 4290 | { |
4ce70ada | 4291 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4292 | |
911d1aaf | 4293 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c TM |
4294 | return; |
4295 | if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) { | |
963d8fe5 TM |
4296 | /* Note: exit _without_ running nfs4_locku_done */ |
4297 | task->tk_action = NULL; | |
faf5f49c TM |
4298 | return; |
4299 | } | |
26e976a8 | 4300 | calldata->timestamp = jiffies; |
035168ab | 4301 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 4302 | &calldata->arg.seq_args, |
9d12b216 | 4303 | &calldata->res.seq_res, task)) |
a893693c | 4304 | return; |
5138fde0 | 4305 | rpc_call_start(task); |
faf5f49c TM |
4306 | } |
4307 | ||
963d8fe5 | 4308 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 4309 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 4310 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 4311 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
4312 | }; |
4313 | ||
a5d16a4d TM |
4314 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
4315 | struct nfs_open_context *ctx, | |
4316 | struct nfs4_lock_state *lsp, | |
4317 | struct nfs_seqid *seqid) | |
4318 | { | |
4319 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
4320 | struct rpc_message msg = { |
4321 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
4322 | .rpc_cred = ctx->cred, | |
4323 | }; | |
c970aa85 TM |
4324 | struct rpc_task_setup task_setup_data = { |
4325 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 4326 | .rpc_message = &msg, |
c970aa85 | 4327 | .callback_ops = &nfs4_locku_ops, |
101070ca | 4328 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4329 | .flags = RPC_TASK_ASYNC, |
4330 | }; | |
a5d16a4d | 4331 | |
137d6aca FF |
4332 | /* Ensure this is an unlock - when canceling a lock, the |
4333 | * canceled lock is passed in, and it won't be an unlock. | |
4334 | */ | |
4335 | fl->fl_type = F_UNLCK; | |
4336 | ||
a5d16a4d TM |
4337 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
4338 | if (data == NULL) { | |
4339 | nfs_free_seqid(seqid); | |
4340 | return ERR_PTR(-ENOMEM); | |
4341 | } | |
4342 | ||
9d12b216 | 4343 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4344 | msg.rpc_argp = &data->arg; |
4345 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4346 | task_setup_data.callback_data = data; |
4347 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
4348 | } |
4349 | ||
faf5f49c TM |
4350 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
4351 | { | |
19e03c57 | 4352 | struct nfs_inode *nfsi = NFS_I(state->inode); |
911d1aaf | 4353 | struct nfs_seqid *seqid; |
1da177e4 | 4354 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
4355 | struct rpc_task *task; |
4356 | int status = 0; | |
536ff0f8 | 4357 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 4358 | |
8d0a8a9d | 4359 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
4360 | /* Unlock _before_ we do the RPC call */ |
4361 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
4362 | down_read(&nfsi->rwsem); |
4363 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
4364 | up_read(&nfsi->rwsem); | |
9b073574 | 4365 | goto out; |
19e03c57 TM |
4366 | } |
4367 | up_read(&nfsi->rwsem); | |
8d0a8a9d | 4368 | if (status != 0) |
9b073574 TM |
4369 | goto out; |
4370 | /* Is this a delegated lock? */ | |
4371 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
4372 | goto out; | |
8d0a8a9d | 4373 | lsp = request->fl_u.nfs4_fl.owner; |
8535b2be | 4374 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 4375 | status = -ENOMEM; |
911d1aaf | 4376 | if (seqid == NULL) |
9b073574 | 4377 | goto out; |
cd3758e3 | 4378 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
4379 | status = PTR_ERR(task); |
4380 | if (IS_ERR(task)) | |
9b073574 | 4381 | goto out; |
a5d16a4d | 4382 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 4383 | rpc_put_task(task); |
9b073574 | 4384 | out: |
536ff0f8 | 4385 | request->fl_flags = fl_flags; |
1da177e4 LT |
4386 | return status; |
4387 | } | |
4388 | ||
a5d16a4d TM |
4389 | struct nfs4_lockdata { |
4390 | struct nfs_lock_args arg; | |
4391 | struct nfs_lock_res res; | |
4392 | struct nfs4_lock_state *lsp; | |
4393 | struct nfs_open_context *ctx; | |
4394 | struct file_lock fl; | |
26e976a8 | 4395 | unsigned long timestamp; |
a5d16a4d TM |
4396 | int rpc_status; |
4397 | int cancelled; | |
66179efe | 4398 | struct nfs_server *server; |
a5d16a4d TM |
4399 | }; |
4400 | ||
4401 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
4402 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
4403 | gfp_t gfp_mask) | |
1da177e4 | 4404 | { |
a5d16a4d TM |
4405 | struct nfs4_lockdata *p; |
4406 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 4407 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 4408 | |
8535b2be | 4409 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
4410 | if (p == NULL) |
4411 | return NULL; | |
4412 | ||
4413 | p->arg.fh = NFS_FH(inode); | |
4414 | p->arg.fl = &p->fl; | |
8535b2be | 4415 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4416 | if (p->arg.open_seqid == NULL) |
4417 | goto out_free; | |
8535b2be | 4418 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4419 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4420 | goto out_free_seqid; |
a5d16a4d | 4421 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4422 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 4423 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4424 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 4425 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4426 | p->lsp = lsp; |
66179efe | 4427 | p->server = server; |
a5d16a4d TM |
4428 | atomic_inc(&lsp->ls_count); |
4429 | p->ctx = get_nfs_open_context(ctx); | |
4430 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4431 | return p; | |
2f74c0a0 TM |
4432 | out_free_seqid: |
4433 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4434 | out_free: |
4435 | kfree(p); | |
4436 | return NULL; | |
4437 | } | |
4438 | ||
4439 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4440 | { | |
4441 | struct nfs4_lockdata *data = calldata; | |
4442 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4443 | |
3110ff80 | 4444 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
4445 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
4446 | return; | |
a5d16a4d TM |
4447 | /* Do we need to do an open_to_lock_owner? */ |
4448 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 TM |
4449 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
4450 | return; | |
a5d16a4d TM |
4451 | data->arg.open_stateid = &state->stateid; |
4452 | data->arg.new_lock_owner = 1; | |
c1d51931 | 4453 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4454 | } else |
4455 | data->arg.new_lock_owner = 0; | |
26e976a8 | 4456 | data->timestamp = jiffies; |
035168ab TM |
4457 | if (nfs4_setup_sequence(data->server, |
4458 | &data->arg.seq_args, | |
9d12b216 | 4459 | &data->res.seq_res, task)) |
66179efe | 4460 | return; |
5138fde0 | 4461 | rpc_call_start(task); |
3110ff80 | 4462 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
a5d16a4d TM |
4463 | } |
4464 | ||
b257957e AB |
4465 | static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata) |
4466 | { | |
4467 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
4468 | nfs4_lock_prepare(task, calldata); | |
4469 | } | |
4470 | ||
a5d16a4d TM |
4471 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4472 | { | |
4473 | struct nfs4_lockdata *data = calldata; | |
4474 | ||
3110ff80 | 4475 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4476 | |
14516c3a TM |
4477 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4478 | return; | |
66179efe | 4479 | |
a5d16a4d | 4480 | data->rpc_status = task->tk_status; |
a5d16a4d | 4481 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4482 | if (data->rpc_status == 0) |
4483 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4484 | else | |
4485 | goto out; | |
4486 | } | |
4487 | if (data->rpc_status == 0) { | |
f597c537 | 4488 | nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid); |
a5d16a4d | 4489 | data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; |
3d4ff43d | 4490 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 4491 | } |
a5d16a4d | 4492 | out: |
3110ff80 | 4493 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4494 | } |
4495 | ||
4496 | static void nfs4_lock_release(void *calldata) | |
4497 | { | |
4498 | struct nfs4_lockdata *data = calldata; | |
4499 | ||
3110ff80 | 4500 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4501 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4502 | if (data->cancelled != 0) { |
4503 | struct rpc_task *task; | |
4504 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4505 | data->arg.lock_seqid); | |
4506 | if (!IS_ERR(task)) | |
bf294b41 | 4507 | rpc_put_task_async(task); |
3110ff80 | 4508 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4509 | } else |
4510 | nfs_free_seqid(data->arg.lock_seqid); | |
4511 | nfs4_put_lock_state(data->lsp); | |
4512 | put_nfs_open_context(data->ctx); | |
4513 | kfree(data); | |
3110ff80 | 4514 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4515 | } |
4516 | ||
4517 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4518 | .rpc_call_prepare = nfs4_lock_prepare, | |
4519 | .rpc_call_done = nfs4_lock_done, | |
4520 | .rpc_release = nfs4_lock_release, | |
4521 | }; | |
4522 | ||
b257957e AB |
4523 | static const struct rpc_call_ops nfs4_recover_lock_ops = { |
4524 | .rpc_call_prepare = nfs4_recover_lock_prepare, | |
4525 | .rpc_call_done = nfs4_lock_done, | |
4526 | .rpc_release = nfs4_lock_release, | |
4527 | }; | |
4528 | ||
2bee72a6 TM |
4529 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4530 | { | |
2bee72a6 TM |
4531 | switch (error) { |
4532 | case -NFS4ERR_ADMIN_REVOKED: | |
4533 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 4534 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 TM |
4535 | if (new_lock_owner != 0 || |
4536 | (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0) | |
ecac799a | 4537 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
4538 | break; |
4539 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 4540 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
4541 | case -NFS4ERR_EXPIRED: |
4542 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
4543 | }; |
4544 | } | |
4545 | ||
afe6c27c | 4546 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4547 | { |
4548 | struct nfs4_lockdata *data; | |
4549 | struct rpc_task *task; | |
5138fde0 TM |
4550 | struct rpc_message msg = { |
4551 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4552 | .rpc_cred = state->owner->so_cred, | |
4553 | }; | |
c970aa85 TM |
4554 | struct rpc_task_setup task_setup_data = { |
4555 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4556 | .rpc_message = &msg, |
c970aa85 | 4557 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4558 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4559 | .flags = RPC_TASK_ASYNC, |
4560 | }; | |
a5d16a4d TM |
4561 | int ret; |
4562 | ||
3110ff80 | 4563 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4564 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4565 | fl->fl_u.nfs4_fl.owner, |
4566 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4567 | if (data == NULL) |
4568 | return -ENOMEM; | |
4569 | if (IS_SETLKW(cmd)) | |
4570 | data->arg.block = 1; | |
b257957e AB |
4571 | if (recovery_type > NFS_LOCK_NEW) { |
4572 | if (recovery_type == NFS_LOCK_RECLAIM) | |
afe6c27c | 4573 | data->arg.reclaim = NFS_LOCK_RECLAIM; |
b257957e AB |
4574 | task_setup_data.callback_ops = &nfs4_recover_lock_ops; |
4575 | } | |
9d12b216 | 4576 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4577 | msg.rpc_argp = &data->arg; |
4578 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4579 | task_setup_data.callback_data = data; |
4580 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 4581 | if (IS_ERR(task)) |
a5d16a4d | 4582 | return PTR_ERR(task); |
a5d16a4d TM |
4583 | ret = nfs4_wait_for_completion_rpc_task(task); |
4584 | if (ret == 0) { | |
4585 | ret = data->rpc_status; | |
2bee72a6 TM |
4586 | if (ret) |
4587 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4588 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4589 | } else |
4590 | data->cancelled = 1; | |
e6b3c4db | 4591 | rpc_put_task(task); |
3110ff80 | 4592 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4593 | return ret; |
1da177e4 LT |
4594 | } |
4595 | ||
4596 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4597 | { | |
202b50dc | 4598 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4599 | struct nfs4_exception exception = { |
4600 | .inode = state->inode, | |
4601 | }; | |
202b50dc TM |
4602 | int err; |
4603 | ||
4604 | do { | |
42a2d13e TM |
4605 | /* Cache the lock if possible... */ |
4606 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4607 | return 0; | |
afe6c27c | 4608 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 4609 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
4610 | break; |
4611 | nfs4_handle_exception(server, err, &exception); | |
4612 | } while (exception.retry); | |
4613 | return err; | |
1da177e4 LT |
4614 | } |
4615 | ||
4616 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4617 | { | |
202b50dc | 4618 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4619 | struct nfs4_exception exception = { |
4620 | .inode = state->inode, | |
4621 | }; | |
202b50dc TM |
4622 | int err; |
4623 | ||
6bfc93ef TM |
4624 | err = nfs4_set_lock_state(state, request); |
4625 | if (err != 0) | |
4626 | return err; | |
202b50dc | 4627 | do { |
42a2d13e TM |
4628 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4629 | return 0; | |
afe6c27c | 4630 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
4631 | switch (err) { |
4632 | default: | |
4633 | goto out; | |
4634 | case -NFS4ERR_GRACE: | |
4635 | case -NFS4ERR_DELAY: | |
4636 | nfs4_handle_exception(server, err, &exception); | |
4637 | err = 0; | |
4638 | } | |
202b50dc | 4639 | } while (exception.retry); |
a9ed2e25 | 4640 | out: |
202b50dc | 4641 | return err; |
1da177e4 LT |
4642 | } |
4643 | ||
f062eb6c | 4644 | #if defined(CONFIG_NFS_V4_1) |
b01dd1d8 | 4645 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 4646 | { |
b01dd1d8 BS |
4647 | int status, ret = NFS_OK; |
4648 | struct nfs4_lock_state *lsp; | |
f062eb6c BS |
4649 | struct nfs_server *server = NFS_SERVER(state->inode); |
4650 | ||
b01dd1d8 BS |
4651 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
4652 | if (lsp->ls_flags & NFS_LOCK_INITIALIZED) { | |
4653 | status = nfs41_test_stateid(server, &lsp->ls_stateid); | |
4654 | if (status != NFS_OK) { | |
4655 | nfs41_free_stateid(server, &lsp->ls_stateid); | |
4656 | lsp->ls_flags &= ~NFS_LOCK_INITIALIZED; | |
4657 | ret = status; | |
4658 | } | |
4659 | } | |
4660 | }; | |
4661 | ||
4662 | return ret; | |
4663 | } | |
4664 | ||
4665 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4666 | { | |
4667 | int status = NFS_OK; | |
4668 | ||
4669 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
4670 | status = nfs41_check_expired_locks(state); | |
f062eb6c | 4671 | if (status == NFS_OK) |
b01dd1d8 | 4672 | return status; |
f062eb6c BS |
4673 | return nfs4_lock_expired(state, request); |
4674 | } | |
4675 | #endif | |
4676 | ||
1da177e4 LT |
4677 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4678 | { | |
19e03c57 | 4679 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 4680 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 4681 | int status = -ENOLCK; |
1da177e4 | 4682 | |
8e469ebd TM |
4683 | if ((fl_flags & FL_POSIX) && |
4684 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
4685 | goto out; | |
6bfc93ef | 4686 | /* Is this a delegated open? */ |
6bfc93ef TM |
4687 | status = nfs4_set_lock_state(state, request); |
4688 | if (status != 0) | |
4689 | goto out; | |
01c3b861 TM |
4690 | request->fl_flags |= FL_ACCESS; |
4691 | status = do_vfs_lock(request->fl_file, request); | |
4692 | if (status < 0) | |
4693 | goto out; | |
19e03c57 | 4694 | down_read(&nfsi->rwsem); |
01c3b861 | 4695 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 4696 | /* Yes: cache locks! */ |
01c3b861 | 4697 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
4698 | request->fl_flags = fl_flags & ~FL_SLEEP; |
4699 | status = do_vfs_lock(request->fl_file, request); | |
4700 | goto out_unlock; | |
01c3b861 | 4701 | } |
afe6c27c | 4702 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 4703 | if (status != 0) |
01c3b861 | 4704 | goto out_unlock; |
6bfc93ef | 4705 | /* Note: we always want to sleep here! */ |
01c3b861 | 4706 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 4707 | if (do_vfs_lock(request->fl_file, request) < 0) |
a030889a WAA |
4708 | printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " |
4709 | "manager!\n", __func__); | |
01c3b861 | 4710 | out_unlock: |
19e03c57 | 4711 | up_read(&nfsi->rwsem); |
01c3b861 TM |
4712 | out: |
4713 | request->fl_flags = fl_flags; | |
1da177e4 LT |
4714 | return status; |
4715 | } | |
4716 | ||
4717 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4718 | { | |
a1d0b5ee TM |
4719 | struct nfs4_exception exception = { |
4720 | .state = state, | |
05ffe24f | 4721 | .inode = state->inode, |
a1d0b5ee | 4722 | }; |
1da177e4 LT |
4723 | int err; |
4724 | ||
4725 | do { | |
965b5d67 TM |
4726 | err = _nfs4_proc_setlk(state, cmd, request); |
4727 | if (err == -NFS4ERR_DENIED) | |
4728 | err = -EAGAIN; | |
1da177e4 | 4729 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 4730 | err, &exception); |
1da177e4 LT |
4731 | } while (exception.retry); |
4732 | return err; | |
4733 | } | |
4734 | ||
4735 | static int | |
4736 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
4737 | { | |
4738 | struct nfs_open_context *ctx; | |
4739 | struct nfs4_state *state; | |
4740 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
4741 | int status; | |
4742 | ||
4743 | /* verify open state */ | |
cd3758e3 | 4744 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
4745 | state = ctx->state; |
4746 | ||
4747 | if (request->fl_start < 0 || request->fl_end < 0) | |
4748 | return -EINVAL; | |
4749 | ||
d953126a TM |
4750 | if (IS_GETLK(cmd)) { |
4751 | if (state != NULL) | |
4752 | return nfs4_proc_getlk(state, F_GETLK, request); | |
4753 | return 0; | |
4754 | } | |
1da177e4 LT |
4755 | |
4756 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
4757 | return -EINVAL; | |
4758 | ||
d953126a TM |
4759 | if (request->fl_type == F_UNLCK) { |
4760 | if (state != NULL) | |
4761 | return nfs4_proc_unlck(state, cmd, request); | |
4762 | return 0; | |
4763 | } | |
1da177e4 | 4764 | |
d953126a TM |
4765 | if (state == NULL) |
4766 | return -ENOLCK; | |
55725513 TM |
4767 | /* |
4768 | * Don't rely on the VFS having checked the file open mode, | |
4769 | * since it won't do this for flock() locks. | |
4770 | */ | |
4771 | switch (request->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) { | |
4772 | case F_RDLCK: | |
4773 | if (!(filp->f_mode & FMODE_READ)) | |
4774 | return -EBADF; | |
4775 | break; | |
4776 | case F_WRLCK: | |
4777 | if (!(filp->f_mode & FMODE_WRITE)) | |
4778 | return -EBADF; | |
4779 | } | |
4780 | ||
1da177e4 LT |
4781 | do { |
4782 | status = nfs4_proc_setlk(state, cmd, request); | |
4783 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
4784 | break; | |
4785 | timeout = nfs4_set_lock_task_retry(timeout); | |
4786 | status = -ERESTARTSYS; | |
4787 | if (signalled()) | |
4788 | break; | |
4789 | } while(status < 0); | |
1da177e4 LT |
4790 | return status; |
4791 | } | |
4792 | ||
888e694c TM |
4793 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
4794 | { | |
4795 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4796 | struct nfs4_exception exception = { }; | |
4797 | int err; | |
4798 | ||
4799 | err = nfs4_set_lock_state(state, fl); | |
4800 | if (err != 0) | |
4801 | goto out; | |
4802 | do { | |
afe6c27c | 4803 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
d5122201 TM |
4804 | switch (err) { |
4805 | default: | |
a030889a WAA |
4806 | printk(KERN_ERR "NFS: %s: unhandled error " |
4807 | "%d.\n", __func__, err); | |
d5122201 | 4808 | case 0: |
965b5d67 | 4809 | case -ESTALE: |
d5122201 TM |
4810 | goto out; |
4811 | case -NFS4ERR_EXPIRED: | |
0ced63d1 | 4812 | nfs4_schedule_stateid_recovery(server, state); |
d5122201 | 4813 | case -NFS4ERR_STALE_CLIENTID: |
965b5d67 | 4814 | case -NFS4ERR_STALE_STATEID: |
0400a6b0 TM |
4815 | nfs4_schedule_lease_recovery(server->nfs_client); |
4816 | goto out; | |
74e7bb73 RL |
4817 | case -NFS4ERR_BADSESSION: |
4818 | case -NFS4ERR_BADSLOT: | |
4819 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4820 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4821 | case -NFS4ERR_DEADSESSION: | |
0400a6b0 | 4822 | nfs4_schedule_session_recovery(server->nfs_client->cl_session); |
d5122201 | 4823 | goto out; |
965b5d67 TM |
4824 | case -ERESTARTSYS: |
4825 | /* | |
4826 | * The show must go on: exit, but mark the | |
4827 | * stateid as needing recovery. | |
4828 | */ | |
a1d0b5ee | 4829 | case -NFS4ERR_DELEG_REVOKED: |
965b5d67 TM |
4830 | case -NFS4ERR_ADMIN_REVOKED: |
4831 | case -NFS4ERR_BAD_STATEID: | |
4832 | case -NFS4ERR_OPENMODE: | |
0400a6b0 | 4833 | nfs4_schedule_stateid_recovery(server, state); |
965b5d67 TM |
4834 | err = 0; |
4835 | goto out; | |
168667c4 TM |
4836 | case -EKEYEXPIRED: |
4837 | /* | |
4838 | * User RPCSEC_GSS context has expired. | |
4839 | * We cannot recover this stateid now, so | |
4840 | * skip it and allow recovery thread to | |
4841 | * proceed. | |
4842 | */ | |
4843 | err = 0; | |
4844 | goto out; | |
965b5d67 TM |
4845 | case -ENOMEM: |
4846 | case -NFS4ERR_DENIED: | |
4847 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
4848 | err = 0; | |
4849 | goto out; | |
d5122201 TM |
4850 | case -NFS4ERR_DELAY: |
4851 | break; | |
4852 | } | |
888e694c TM |
4853 | err = nfs4_handle_exception(server, err, &exception); |
4854 | } while (exception.retry); | |
4855 | out: | |
4856 | return err; | |
4857 | } | |
6b3b5496 | 4858 | |
cf470c3e TM |
4859 | struct nfs_release_lockowner_data { |
4860 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 4861 | struct nfs_server *server; |
cf470c3e TM |
4862 | struct nfs_release_lockowner_args args; |
4863 | }; | |
4864 | ||
d3c7b7cc TM |
4865 | static void nfs4_release_lockowner_release(void *calldata) |
4866 | { | |
cf470c3e | 4867 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 4868 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
4869 | kfree(calldata); |
4870 | } | |
4871 | ||
17280175 | 4872 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
d3c7b7cc TM |
4873 | .rpc_release = nfs4_release_lockowner_release, |
4874 | }; | |
4875 | ||
cf470c3e | 4876 | int nfs4_release_lockowner(struct nfs4_lock_state *lsp) |
d3c7b7cc TM |
4877 | { |
4878 | struct nfs_server *server = lsp->ls_state->owner->so_server; | |
cf470c3e | 4879 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
4880 | struct rpc_message msg = { |
4881 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
4882 | }; | |
4883 | ||
4884 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
cf470c3e TM |
4885 | return -EINVAL; |
4886 | data = kmalloc(sizeof(*data), GFP_NOFS); | |
4887 | if (!data) | |
4888 | return -ENOMEM; | |
4889 | data->lsp = lsp; | |
5ae67c4f | 4890 | data->server = server; |
cf470c3e TM |
4891 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
4892 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
4893 | data->args.lock_owner.s_dev = server->s_dev; | |
4894 | msg.rpc_argp = &data->args; | |
4895 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); | |
4896 | return 0; | |
d3c7b7cc TM |
4897 | } |
4898 | ||
aa1870af BF |
4899 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
4900 | ||
64c2ce8b AK |
4901 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
4902 | const void *buf, size_t buflen, | |
4903 | int flags, int type) | |
6b3b5496 | 4904 | { |
64c2ce8b AK |
4905 | if (strcmp(key, "") != 0) |
4906 | return -EINVAL; | |
4b580ee3 | 4907 | |
64c2ce8b | 4908 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4909 | } |
4910 | ||
64c2ce8b AK |
4911 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
4912 | void *buf, size_t buflen, int type) | |
6b3b5496 | 4913 | { |
64c2ce8b AK |
4914 | if (strcmp(key, "") != 0) |
4915 | return -EINVAL; | |
aa1870af | 4916 | |
64c2ce8b | 4917 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4918 | } |
4919 | ||
64c2ce8b AK |
4920 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
4921 | size_t list_len, const char *name, | |
4922 | size_t name_len, int type) | |
6b3b5496 | 4923 | { |
64c2ce8b | 4924 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 4925 | |
096455a2 BF |
4926 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
4927 | return 0; | |
64c2ce8b AK |
4928 | |
4929 | if (list && len <= list_len) | |
4930 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 4931 | return len; |
6b3b5496 BF |
4932 | } |
4933 | ||
533eb461 AA |
4934 | /* |
4935 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
4936 | */ | |
69aaaae1 TM |
4937 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
4938 | { | |
533eb461 AA |
4939 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
4940 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
4941 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 4942 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
4943 | return; |
4944 | ||
4945 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 4946 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
4947 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
4948 | fattr->nlink = 2; | |
4949 | } | |
4950 | ||
f05d147f BS |
4951 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
4952 | const struct qstr *name, | |
4953 | struct nfs4_fs_locations *fs_locations, | |
4954 | struct page *page) | |
683b57b4 TM |
4955 | { |
4956 | struct nfs_server *server = NFS_SERVER(dir); | |
4957 | u32 bitmask[2] = { | |
361e624f | 4958 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
4959 | }; |
4960 | struct nfs4_fs_locations_arg args = { | |
4961 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 4962 | .name = name, |
683b57b4 TM |
4963 | .page = page, |
4964 | .bitmask = bitmask, | |
4965 | }; | |
22958463 BH |
4966 | struct nfs4_fs_locations_res res = { |
4967 | .fs_locations = fs_locations, | |
4968 | }; | |
683b57b4 TM |
4969 | struct rpc_message msg = { |
4970 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
4971 | .rpc_argp = &args, | |
22958463 | 4972 | .rpc_resp = &res, |
683b57b4 TM |
4973 | }; |
4974 | int status; | |
4975 | ||
3110ff80 | 4976 | dprintk("%s: start\n", __func__); |
533eb461 AA |
4977 | |
4978 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
4979 | * is not supported */ | |
4980 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
4981 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
4982 | else | |
4983 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
4984 | ||
c228fd3a | 4985 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 4986 | fs_locations->server = server; |
830b8e33 | 4987 | fs_locations->nlocations = 0; |
f05d147f | 4988 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 4989 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
4990 | return status; |
4991 | } | |
4992 | ||
f05d147f BS |
4993 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
4994 | const struct qstr *name, | |
4995 | struct nfs4_fs_locations *fs_locations, | |
4996 | struct page *page) | |
db0a9593 BS |
4997 | { |
4998 | struct nfs4_exception exception = { }; | |
4999 | int err; | |
5000 | do { | |
5001 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
f05d147f | 5002 | _nfs4_proc_fs_locations(client, dir, name, fs_locations, page), |
db0a9593 BS |
5003 | &exception); |
5004 | } while (exception.retry); | |
5005 | return err; | |
5006 | } | |
5007 | ||
5a5ea0d4 BS |
5008 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) |
5009 | { | |
5010 | int status; | |
5011 | struct nfs4_secinfo_arg args = { | |
5012 | .dir_fh = NFS_FH(dir), | |
5013 | .name = name, | |
5014 | }; | |
5015 | struct nfs4_secinfo_res res = { | |
5016 | .flavors = flavors, | |
5017 | }; | |
5018 | struct rpc_message msg = { | |
5019 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
5020 | .rpc_argp = &args, | |
5021 | .rpc_resp = &res, | |
5022 | }; | |
5023 | ||
5024 | dprintk("NFS call secinfo %s\n", name->name); | |
5025 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); | |
5026 | dprintk("NFS reply secinfo: %d\n", status); | |
5027 | return status; | |
5028 | } | |
5029 | ||
72de53ec BS |
5030 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
5031 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
5032 | { |
5033 | struct nfs4_exception exception = { }; | |
5034 | int err; | |
5035 | do { | |
5036 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
5037 | _nfs4_proc_secinfo(dir, name, flavors), | |
5038 | &exception); | |
5039 | } while (exception.retry); | |
5040 | return err; | |
5041 | } | |
5042 | ||
557134a3 | 5043 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
5044 | /* |
5045 | * Check the exchange flags returned by the server for invalid flags, having | |
5046 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
5047 | * DS flags set. | |
5048 | */ | |
5049 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
5050 | { | |
5051 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
5052 | goto out_inval; | |
5053 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
5054 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
5055 | goto out_inval; | |
5056 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
5057 | goto out_inval; | |
5058 | return NFS_OK; | |
5059 | out_inval: | |
5060 | return -NFS4ERR_INVAL; | |
5061 | } | |
5062 | ||
78fe0f41 | 5063 | static bool |
79d4e1f0 CL |
5064 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
5065 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
5066 | { |
5067 | if (a->server_scope_sz == b->server_scope_sz && | |
5068 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
5069 | return true; | |
5070 | ||
5071 | return false; | |
5072 | } | |
5073 | ||
99fe60d0 BH |
5074 | /* |
5075 | * nfs4_proc_exchange_id() | |
5076 | * | |
5077 | * Since the clientid has expired, all compounds using sessions | |
5078 | * associated with the stale clientid will be returning | |
5079 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
5080 | * be in some phase of session reset. | |
5081 | */ | |
4d643d1d | 5082 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
5083 | { |
5084 | nfs4_verifier verifier; | |
5085 | struct nfs41_exchange_id_args args = { | |
cd93710e | 5086 | .verifier = &verifier, |
99fe60d0 | 5087 | .client = clp, |
357f54d6 | 5088 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, |
99fe60d0 BH |
5089 | }; |
5090 | struct nfs41_exchange_id_res res = { | |
5091 | .client = clp, | |
5092 | }; | |
5093 | int status; | |
5094 | struct rpc_message msg = { | |
5095 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
5096 | .rpc_argp = &args, | |
5097 | .rpc_resp = &res, | |
5098 | .rpc_cred = cred, | |
5099 | }; | |
99fe60d0 BH |
5100 | |
5101 | dprintk("--> %s\n", __func__); | |
5102 | BUG_ON(clp == NULL); | |
a7b72103 | 5103 | |
f092075d | 5104 | nfs4_init_boot_verifier(clp, &verifier); |
99fe60d0 | 5105 | |
c7a360b0 | 5106 | args.id_len = scnprintf(args.id, sizeof(args.id), |
3617e503 | 5107 | "%s/%s/%u", |
c7a360b0 | 5108 | clp->cl_ipaddr, |
3617e503 | 5109 | clp->cl_rpcclient->cl_nodename, |
c7a360b0 | 5110 | clp->cl_rpcclient->cl_auth->au_flavor); |
99fe60d0 | 5111 | |
79d4e1f0 CL |
5112 | res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
5113 | GFP_KERNEL); | |
177313f1 | 5114 | if (unlikely(res.server_scope == NULL)) { |
abe9a6d5 WAA |
5115 | status = -ENOMEM; |
5116 | goto out; | |
5117 | } | |
78fe0f41 | 5118 | |
7d2ed9ac | 5119 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_KERNEL); |
177313f1 | 5120 | if (unlikely(res.impl_id == NULL)) { |
7d2ed9ac WAA |
5121 | status = -ENOMEM; |
5122 | goto out_server_scope; | |
5123 | } | |
5124 | ||
1bd714f2 | 5125 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
177313f1 | 5126 | if (status == 0) |
c7a360b0 | 5127 | status = nfs4_check_cl_exchange_flags(clp->cl_exchange_flags); |
78fe0f41 | 5128 | |
177313f1 | 5129 | if (status == 0) { |
7d2ed9ac | 5130 | /* use the most recent implementation id */ |
59155546 CL |
5131 | kfree(clp->cl_implid); |
5132 | clp->cl_implid = res.impl_id; | |
7d2ed9ac WAA |
5133 | } else |
5134 | kfree(res.impl_id); | |
5135 | ||
177313f1 CL |
5136 | if (status == 0) { |
5137 | if (clp->cl_serverscope != NULL && | |
79d4e1f0 | 5138 | !nfs41_same_server_scope(clp->cl_serverscope, |
78fe0f41 WAA |
5139 | res.server_scope)) { |
5140 | dprintk("%s: server_scope mismatch detected\n", | |
5141 | __func__); | |
5142 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
79d4e1f0 CL |
5143 | kfree(clp->cl_serverscope); |
5144 | clp->cl_serverscope = NULL; | |
78fe0f41 WAA |
5145 | } |
5146 | ||
177313f1 | 5147 | if (clp->cl_serverscope == NULL) { |
79d4e1f0 | 5148 | clp->cl_serverscope = res.server_scope; |
abe9a6d5 WAA |
5149 | goto out; |
5150 | } | |
78fe0f41 | 5151 | } |
7d2ed9ac WAA |
5152 | |
5153 | out_server_scope: | |
abe9a6d5 WAA |
5154 | kfree(res.server_scope); |
5155 | out: | |
177313f1 | 5156 | if (clp->cl_implid != NULL) |
7d2ed9ac WAA |
5157 | dprintk("%s: Server Implementation ID: " |
5158 | "domain: %s, name: %s, date: %llu,%u\n", | |
59155546 CL |
5159 | __func__, clp->cl_implid->domain, clp->cl_implid->name, |
5160 | clp->cl_implid->date.seconds, | |
5161 | clp->cl_implid->date.nseconds); | |
99fe60d0 BH |
5162 | dprintk("<-- %s status= %d\n", __func__, status); |
5163 | return status; | |
5164 | } | |
5165 | ||
2050f0cc AA |
5166 | struct nfs4_get_lease_time_data { |
5167 | struct nfs4_get_lease_time_args *args; | |
5168 | struct nfs4_get_lease_time_res *res; | |
5169 | struct nfs_client *clp; | |
5170 | }; | |
5171 | ||
5172 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
5173 | void *calldata) | |
5174 | { | |
5175 | int ret; | |
5176 | struct nfs4_get_lease_time_data *data = | |
5177 | (struct nfs4_get_lease_time_data *)calldata; | |
5178 | ||
5179 | dprintk("--> %s\n", __func__); | |
689cf5c1 | 5180 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
2050f0cc AA |
5181 | /* just setup sequence, do not trigger session recovery |
5182 | since we're invoked within one */ | |
5183 | ret = nfs41_setup_sequence(data->clp->cl_session, | |
689cf5c1 | 5184 | &data->args->la_seq_args, |
9d12b216 | 5185 | &data->res->lr_seq_res, task); |
2050f0cc AA |
5186 | |
5187 | BUG_ON(ret == -EAGAIN); | |
5188 | rpc_call_start(task); | |
5189 | dprintk("<-- %s\n", __func__); | |
5190 | } | |
5191 | ||
5192 | /* | |
5193 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
5194 | * from sequence operation or clientid errors. | |
5195 | */ | |
5196 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
5197 | { | |
5198 | struct nfs4_get_lease_time_data *data = | |
5199 | (struct nfs4_get_lease_time_data *)calldata; | |
5200 | ||
5201 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5202 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
5203 | return; | |
2050f0cc AA |
5204 | switch (task->tk_status) { |
5205 | case -NFS4ERR_DELAY: | |
5206 | case -NFS4ERR_GRACE: | |
5207 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
5208 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
5209 | task->tk_status = 0; | |
a8a4ae3a AA |
5210 | /* fall through */ |
5211 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 5212 | rpc_restart_call_prepare(task); |
2050f0cc AA |
5213 | return; |
5214 | } | |
2050f0cc AA |
5215 | dprintk("<-- %s\n", __func__); |
5216 | } | |
5217 | ||
17280175 | 5218 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
5219 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
5220 | .rpc_call_done = nfs4_get_lease_time_done, | |
5221 | }; | |
5222 | ||
5223 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
5224 | { | |
5225 | struct rpc_task *task; | |
5226 | struct nfs4_get_lease_time_args args; | |
5227 | struct nfs4_get_lease_time_res res = { | |
5228 | .lr_fsinfo = fsinfo, | |
5229 | }; | |
5230 | struct nfs4_get_lease_time_data data = { | |
5231 | .args = &args, | |
5232 | .res = &res, | |
5233 | .clp = clp, | |
5234 | }; | |
5235 | struct rpc_message msg = { | |
5236 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
5237 | .rpc_argp = &args, | |
5238 | .rpc_resp = &res, | |
5239 | }; | |
5240 | struct rpc_task_setup task_setup = { | |
5241 | .rpc_client = clp->cl_rpcclient, | |
5242 | .rpc_message = &msg, | |
5243 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
5244 | .callback_data = &data, |
5245 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
5246 | }; |
5247 | int status; | |
5248 | ||
9d12b216 | 5249 | nfs41_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
2050f0cc AA |
5250 | dprintk("--> %s\n", __func__); |
5251 | task = rpc_run_task(&task_setup); | |
5252 | ||
5253 | if (IS_ERR(task)) | |
5254 | status = PTR_ERR(task); | |
5255 | else { | |
5256 | status = task->tk_status; | |
5257 | rpc_put_task(task); | |
5258 | } | |
5259 | dprintk("<-- %s return %d\n", __func__, status); | |
5260 | ||
5261 | return status; | |
5262 | } | |
5263 | ||
f86f36a6 TM |
5264 | static struct nfs4_slot *nfs4_alloc_slots(u32 max_slots, gfp_t gfp_flags) |
5265 | { | |
5266 | return kcalloc(max_slots, sizeof(struct nfs4_slot), gfp_flags); | |
5267 | } | |
5268 | ||
5269 | static void nfs4_add_and_init_slots(struct nfs4_slot_table *tbl, | |
5270 | struct nfs4_slot *new, | |
5271 | u32 max_slots, | |
5272 | u32 ivalue) | |
5273 | { | |
5274 | struct nfs4_slot *old = NULL; | |
5275 | u32 i; | |
5276 | ||
5277 | spin_lock(&tbl->slot_tbl_lock); | |
5278 | if (new) { | |
5279 | old = tbl->slots; | |
5280 | tbl->slots = new; | |
5281 | tbl->max_slots = max_slots; | |
5282 | } | |
5283 | tbl->highest_used_slotid = -1; /* no slot is currently used */ | |
5284 | for (i = 0; i < tbl->max_slots; i++) | |
5285 | tbl->slots[i].seq_nr = ivalue; | |
5286 | spin_unlock(&tbl->slot_tbl_lock); | |
5287 | kfree(old); | |
5288 | } | |
5289 | ||
b73dafa7 | 5290 | /* |
f86f36a6 | 5291 | * (re)Initialise a slot table |
b73dafa7 | 5292 | */ |
f86f36a6 TM |
5293 | static int nfs4_realloc_slot_table(struct nfs4_slot_table *tbl, u32 max_reqs, |
5294 | u32 ivalue) | |
ac72b7b3 | 5295 | { |
104aeba4 | 5296 | struct nfs4_slot *new = NULL; |
f86f36a6 | 5297 | int ret = -ENOMEM; |
ac72b7b3 | 5298 | |
104aeba4 AA |
5299 | dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__, |
5300 | max_reqs, tbl->max_slots); | |
ac72b7b3 | 5301 | |
104aeba4 AA |
5302 | /* Does the newly negotiated max_reqs match the existing slot table? */ |
5303 | if (max_reqs != tbl->max_slots) { | |
f86f36a6 | 5304 | new = nfs4_alloc_slots(max_reqs, GFP_NOFS); |
104aeba4 AA |
5305 | if (!new) |
5306 | goto out; | |
104aeba4 | 5307 | } |
f86f36a6 TM |
5308 | ret = 0; |
5309 | ||
5310 | nfs4_add_and_init_slots(tbl, new, max_reqs, ivalue); | |
ac72b7b3 AA |
5311 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, |
5312 | tbl, tbl->slots, tbl->max_slots); | |
5313 | out: | |
5314 | dprintk("<-- %s: return %d\n", __func__, ret); | |
5315 | return ret; | |
5316 | } | |
5317 | ||
f8625a6a RL |
5318 | /* Destroy the slot table */ |
5319 | static void nfs4_destroy_slot_tables(struct nfs4_session *session) | |
5320 | { | |
5321 | if (session->fc_slot_table.slots != NULL) { | |
5322 | kfree(session->fc_slot_table.slots); | |
5323 | session->fc_slot_table.slots = NULL; | |
5324 | } | |
5325 | if (session->bc_slot_table.slots != NULL) { | |
5326 | kfree(session->bc_slot_table.slots); | |
5327 | session->bc_slot_table.slots = NULL; | |
5328 | } | |
5329 | return; | |
5330 | } | |
5331 | ||
050047ce | 5332 | /* |
aacd5537 | 5333 | * Initialize or reset the forechannel and backchannel tables |
050047ce | 5334 | */ |
aacd5537 | 5335 | static int nfs4_setup_session_slot_tables(struct nfs4_session *ses) |
050047ce | 5336 | { |
f26468fb | 5337 | struct nfs4_slot_table *tbl; |
aacd5537 | 5338 | int status; |
050047ce | 5339 | |
aacd5537 AA |
5340 | dprintk("--> %s\n", __func__); |
5341 | /* Fore channel */ | |
5342 | tbl = &ses->fc_slot_table; | |
f86f36a6 TM |
5343 | status = nfs4_realloc_slot_table(tbl, ses->fc_attrs.max_reqs, 1); |
5344 | if (status) /* -ENOMEM */ | |
5345 | return status; | |
aacd5537 AA |
5346 | /* Back channel */ |
5347 | tbl = &ses->bc_slot_table; | |
f86f36a6 TM |
5348 | status = nfs4_realloc_slot_table(tbl, ses->bc_attrs.max_reqs, 0); |
5349 | if (status && tbl->slots == NULL) | |
5350 | /* Fore and back channel share a connection so get | |
5351 | * both slot tables or neither */ | |
5352 | nfs4_destroy_slot_tables(ses); | |
f8625a6a | 5353 | return status; |
557134a3 AA |
5354 | } |
5355 | ||
5356 | struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) | |
5357 | { | |
5358 | struct nfs4_session *session; | |
5359 | struct nfs4_slot_table *tbl; | |
5360 | ||
8535b2be | 5361 | session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); |
557134a3 AA |
5362 | if (!session) |
5363 | return NULL; | |
76db6d95 | 5364 | |
557134a3 | 5365 | tbl = &session->fc_slot_table; |
45d43c29 | 5366 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
557134a3 | 5367 | spin_lock_init(&tbl->slot_tbl_lock); |
689cf5c1 | 5368 | rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table"); |
42acd021 | 5369 | init_completion(&tbl->complete); |
f8625a6a RL |
5370 | |
5371 | tbl = &session->bc_slot_table; | |
45d43c29 | 5372 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
f8625a6a RL |
5373 | spin_lock_init(&tbl->slot_tbl_lock); |
5374 | rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table"); | |
42acd021 | 5375 | init_completion(&tbl->complete); |
f8625a6a | 5376 | |
1055d76d TM |
5377 | session->session_state = 1<<NFS4_SESSION_INITING; |
5378 | ||
557134a3 AA |
5379 | session->clp = clp; |
5380 | return session; | |
5381 | } | |
5382 | ||
5383 | void nfs4_destroy_session(struct nfs4_session *session) | |
5384 | { | |
2446ab60 TM |
5385 | struct rpc_xprt *xprt; |
5386 | ||
5a0ffe54 | 5387 | nfs4_proc_destroy_session(session); |
2446ab60 TM |
5388 | |
5389 | rcu_read_lock(); | |
5390 | xprt = rcu_dereference(session->clp->cl_rpcclient->cl_xprt); | |
5391 | rcu_read_unlock(); | |
5a0ffe54 | 5392 | dprintk("%s Destroy backchannel for xprt %p\n", |
2446ab60 TM |
5393 | __func__, xprt); |
5394 | xprt_destroy_backchannel(xprt, NFS41_BC_MIN_CALLBACKS); | |
f8625a6a | 5395 | nfs4_destroy_slot_tables(session); |
557134a3 AA |
5396 | kfree(session); |
5397 | } | |
5398 | ||
fc931582 AA |
5399 | /* |
5400 | * Initialize the values to be used by the client in CREATE_SESSION | |
5401 | * If nfs4_init_session set the fore channel request and response sizes, | |
5402 | * use them. | |
5403 | * | |
5404 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
5405 | * always set csa_cachethis to FALSE because the current implementation | |
5406 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
5407 | */ | |
5408 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
5409 | { | |
5410 | struct nfs4_session *session = args->client->cl_session; | |
5411 | unsigned int mxrqst_sz = session->fc_attrs.max_rqst_sz, | |
5412 | mxresp_sz = session->fc_attrs.max_resp_sz; | |
5413 | ||
5414 | if (mxrqst_sz == 0) | |
5415 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
5416 | if (mxresp_sz == 0) | |
5417 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
5418 | /* Fore channel attributes */ | |
fc931582 AA |
5419 | args->fc_attrs.max_rqst_sz = mxrqst_sz; |
5420 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 | 5421 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 5422 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
5423 | |
5424 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 5425 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
5426 | __func__, |
5427 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 5428 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
5429 | |
5430 | /* Back channel attributes */ | |
fc931582 AA |
5431 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
5432 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
5433 | args->bc_attrs.max_resp_sz_cached = 0; | |
5434 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
5435 | args->bc_attrs.max_reqs = 1; | |
5436 | ||
5437 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
5438 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
5439 | __func__, | |
5440 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
5441 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
5442 | args->bc_attrs.max_reqs); | |
5443 | } | |
5444 | ||
43c2e885 | 5445 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 5446 | { |
43c2e885 BF |
5447 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
5448 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
5449 | ||
43c2e885 BF |
5450 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
5451 | return -EINVAL; | |
5452 | /* | |
5453 | * Our requested max_ops is the minimum we need; we're not | |
5454 | * prepared to break up compounds into smaller pieces than that. | |
5455 | * So, no point even trying to continue if the server won't | |
5456 | * cooperate: | |
5457 | */ | |
5458 | if (rcvd->max_ops < sent->max_ops) | |
5459 | return -EINVAL; | |
5460 | if (rcvd->max_reqs == 0) | |
5461 | return -EINVAL; | |
b4b9a0c1 VG |
5462 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
5463 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 5464 | return 0; |
8d35301d AA |
5465 | } |
5466 | ||
43c2e885 BF |
5467 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
5468 | { | |
5469 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
5470 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 5471 | |
43c2e885 BF |
5472 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
5473 | return -EINVAL; | |
5474 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
5475 | return -EINVAL; | |
5476 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
5477 | return -EINVAL; | |
5478 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 5479 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 5480 | return -EINVAL; |
b4b9a0c1 | 5481 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 BF |
5482 | return -EINVAL; |
5483 | return 0; | |
5484 | } | |
8d35301d | 5485 | |
8d35301d AA |
5486 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
5487 | struct nfs4_session *session) | |
5488 | { | |
43c2e885 | 5489 | int ret; |
8d35301d | 5490 | |
43c2e885 BF |
5491 | ret = nfs4_verify_fore_channel_attrs(args, session); |
5492 | if (ret) | |
5493 | return ret; | |
5494 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
5495 | } |
5496 | ||
fc931582 AA |
5497 | static int _nfs4_proc_create_session(struct nfs_client *clp) |
5498 | { | |
5499 | struct nfs4_session *session = clp->cl_session; | |
5500 | struct nfs41_create_session_args args = { | |
5501 | .client = clp, | |
5502 | .cb_program = NFS4_CALLBACK, | |
5503 | }; | |
5504 | struct nfs41_create_session_res res = { | |
5505 | .client = clp, | |
5506 | }; | |
5507 | struct rpc_message msg = { | |
5508 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
5509 | .rpc_argp = &args, | |
5510 | .rpc_resp = &res, | |
5511 | }; | |
5512 | int status; | |
5513 | ||
5514 | nfs4_init_channel_attrs(&args); | |
0f91421e | 5515 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 5516 | |
1bd714f2 | 5517 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
fc931582 | 5518 | |
8d35301d AA |
5519 | if (!status) |
5520 | /* Verify the session's negotiated channel_attrs values */ | |
5521 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
5522 | if (!status) { |
5523 | /* Increment the clientid slot sequence id */ | |
5524 | clp->cl_seqid++; | |
5525 | } | |
5526 | ||
5527 | return status; | |
5528 | } | |
5529 | ||
5530 | /* | |
5531 | * Issues a CREATE_SESSION operation to the server. | |
5532 | * It is the responsibility of the caller to verify the session is | |
5533 | * expired before calling this routine. | |
5534 | */ | |
f26468fb | 5535 | int nfs4_proc_create_session(struct nfs_client *clp) |
fc931582 AA |
5536 | { |
5537 | int status; | |
5538 | unsigned *ptr; | |
fc931582 AA |
5539 | struct nfs4_session *session = clp->cl_session; |
5540 | ||
5541 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
5542 | ||
fd954ae1 | 5543 | status = _nfs4_proc_create_session(clp); |
fc931582 AA |
5544 | if (status) |
5545 | goto out; | |
5546 | ||
aacd5537 AA |
5547 | /* Init or reset the session slot tables */ |
5548 | status = nfs4_setup_session_slot_tables(session); | |
5549 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
5550 | if (status) |
5551 | goto out; | |
5552 | ||
5553 | ptr = (unsigned *)&session->sess_id.data[0]; | |
5554 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
5555 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
5556 | out: |
5557 | dprintk("<-- %s\n", __func__); | |
5558 | return status; | |
5559 | } | |
5560 | ||
0f3e66c6 AA |
5561 | /* |
5562 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
5563 | * The caller must serialize access to this routine. | |
5564 | */ | |
5565 | int nfs4_proc_destroy_session(struct nfs4_session *session) | |
5566 | { | |
5567 | int status = 0; | |
5568 | struct rpc_message msg; | |
5569 | ||
5570 | dprintk("--> nfs4_proc_destroy_session\n"); | |
5571 | ||
5572 | /* session is still being setup */ | |
5573 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
5574 | return status; | |
5575 | ||
5576 | msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION]; | |
5577 | msg.rpc_argp = session; | |
5578 | msg.rpc_resp = NULL; | |
5579 | msg.rpc_cred = NULL; | |
1bd714f2 | 5580 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
0f3e66c6 AA |
5581 | |
5582 | if (status) | |
5583 | printk(KERN_WARNING | |
f9fd2d9c | 5584 | "NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
5585 | "Session has been destroyed regardless...\n", status); |
5586 | ||
5587 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
5588 | return status; | |
5589 | } | |
5590 | ||
fccba804 TM |
5591 | int nfs4_init_session(struct nfs_server *server) |
5592 | { | |
5593 | struct nfs_client *clp = server->nfs_client; | |
2449ea2e | 5594 | struct nfs4_session *session; |
68bf05ef | 5595 | unsigned int rsize, wsize; |
fccba804 TM |
5596 | int ret; |
5597 | ||
5598 | if (!nfs4_has_session(clp)) | |
5599 | return 0; | |
5600 | ||
1055d76d TM |
5601 | session = clp->cl_session; |
5602 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5603 | return 0; | |
5604 | ||
68bf05ef AA |
5605 | rsize = server->rsize; |
5606 | if (rsize == 0) | |
5607 | rsize = NFS_MAX_FILE_IO_SIZE; | |
5608 | wsize = server->wsize; | |
5609 | if (wsize == 0) | |
5610 | wsize = NFS_MAX_FILE_IO_SIZE; | |
5611 | ||
68bf05ef AA |
5612 | session->fc_attrs.max_rqst_sz = wsize + nfs41_maxwrite_overhead; |
5613 | session->fc_attrs.max_resp_sz = rsize + nfs41_maxread_overhead; | |
2449ea2e | 5614 | |
fccba804 TM |
5615 | ret = nfs4_recover_expired_lease(server); |
5616 | if (!ret) | |
5617 | ret = nfs4_check_client_ready(clp); | |
5618 | return ret; | |
5619 | } | |
5620 | ||
d83217c1 AA |
5621 | int nfs4_init_ds_session(struct nfs_client *clp) |
5622 | { | |
5623 | struct nfs4_session *session = clp->cl_session; | |
5624 | int ret; | |
5625 | ||
5626 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5627 | return 0; | |
5628 | ||
5629 | ret = nfs4_client_recover_expired_lease(clp); | |
5630 | if (!ret) | |
5631 | /* Test for the DS role */ | |
5632 | if (!is_ds_client(clp)) | |
5633 | ret = -ENODEV; | |
5634 | if (!ret) | |
5635 | ret = nfs4_check_client_ready(clp); | |
5636 | return ret; | |
5637 | ||
5638 | } | |
5639 | EXPORT_SYMBOL_GPL(nfs4_init_ds_session); | |
5640 | ||
5641 | ||
fc01cea9 AA |
5642 | /* |
5643 | * Renew the cl_session lease. | |
5644 | */ | |
d5f8d3fe TM |
5645 | struct nfs4_sequence_data { |
5646 | struct nfs_client *clp; | |
5647 | struct nfs4_sequence_args args; | |
5648 | struct nfs4_sequence_res res; | |
5649 | }; | |
5650 | ||
dc96aef9 AB |
5651 | static void nfs41_sequence_release(void *data) |
5652 | { | |
d5f8d3fe TM |
5653 | struct nfs4_sequence_data *calldata = data; |
5654 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 5655 | |
7135840f AB |
5656 | if (atomic_read(&clp->cl_count) > 1) |
5657 | nfs4_schedule_state_renewal(clp); | |
5658 | nfs_put_client(clp); | |
d5f8d3fe | 5659 | kfree(calldata); |
dc96aef9 AB |
5660 | } |
5661 | ||
aa5190d0 TM |
5662 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5663 | { | |
5664 | switch(task->tk_status) { | |
5665 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5666 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5667 | return -EAGAIN; | |
5668 | default: | |
0400a6b0 | 5669 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5670 | } |
5671 | return 0; | |
5672 | } | |
5673 | ||
dc96aef9 | 5674 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 5675 | { |
d5f8d3fe TM |
5676 | struct nfs4_sequence_data *calldata = data; |
5677 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 5678 | |
14516c3a TM |
5679 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
5680 | return; | |
fc01cea9 AA |
5681 | |
5682 | if (task->tk_status < 0) { | |
5683 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
5684 | if (atomic_read(&clp->cl_count) == 1) |
5685 | goto out; | |
fc01cea9 | 5686 | |
aa5190d0 TM |
5687 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
5688 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
5689 | return; |
5690 | } | |
5691 | } | |
fc01cea9 | 5692 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 5693 | out: |
fc01cea9 AA |
5694 | dprintk("<-- %s\n", __func__); |
5695 | } | |
5696 | ||
5697 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
5698 | { | |
d5f8d3fe TM |
5699 | struct nfs4_sequence_data *calldata = data; |
5700 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
5701 | struct nfs4_sequence_args *args; |
5702 | struct nfs4_sequence_res *res; | |
5703 | ||
fc01cea9 AA |
5704 | args = task->tk_msg.rpc_argp; |
5705 | res = task->tk_msg.rpc_resp; | |
5706 | ||
9d12b216 | 5707 | if (nfs41_setup_sequence(clp->cl_session, args, res, task)) |
fc01cea9 AA |
5708 | return; |
5709 | rpc_call_start(task); | |
5710 | } | |
5711 | ||
5712 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
5713 | .rpc_call_done = nfs41_sequence_call_done, | |
5714 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 5715 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
5716 | }; |
5717 | ||
71ac6da9 | 5718 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) |
fc01cea9 | 5719 | { |
d5f8d3fe | 5720 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
5721 | struct rpc_message msg = { |
5722 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
5723 | .rpc_cred = cred, | |
5724 | }; | |
71ac6da9 TM |
5725 | struct rpc_task_setup task_setup_data = { |
5726 | .rpc_client = clp->cl_rpcclient, | |
5727 | .rpc_message = &msg, | |
5728 | .callback_ops = &nfs41_sequence_ops, | |
5729 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT, | |
5730 | }; | |
fc01cea9 | 5731 | |
7135840f | 5732 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 5733 | return ERR_PTR(-EIO); |
dfb4f309 | 5734 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 5735 | if (calldata == NULL) { |
7135840f | 5736 | nfs_put_client(clp); |
71ac6da9 | 5737 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 5738 | } |
9d12b216 | 5739 | nfs41_init_sequence(&calldata->args, &calldata->res, 0); |
d5f8d3fe TM |
5740 | msg.rpc_argp = &calldata->args; |
5741 | msg.rpc_resp = &calldata->res; | |
5742 | calldata->clp = clp; | |
71ac6da9 | 5743 | task_setup_data.callback_data = calldata; |
fc01cea9 | 5744 | |
71ac6da9 TM |
5745 | return rpc_run_task(&task_setup_data); |
5746 | } | |
5747 | ||
2f60ea6b | 5748 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
5749 | { |
5750 | struct rpc_task *task; | |
5751 | int ret = 0; | |
5752 | ||
2f60ea6b TM |
5753 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
5754 | return 0; | |
71ac6da9 TM |
5755 | task = _nfs41_proc_sequence(clp, cred); |
5756 | if (IS_ERR(task)) | |
5757 | ret = PTR_ERR(task); | |
5758 | else | |
bf294b41 | 5759 | rpc_put_task_async(task); |
71ac6da9 TM |
5760 | dprintk("<-- %s status=%d\n", __func__, ret); |
5761 | return ret; | |
5762 | } | |
5763 | ||
5764 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5765 | { | |
5766 | struct rpc_task *task; | |
5767 | int ret; | |
5768 | ||
5769 | task = _nfs41_proc_sequence(clp, cred); | |
5770 | if (IS_ERR(task)) { | |
5771 | ret = PTR_ERR(task); | |
5772 | goto out; | |
5773 | } | |
5774 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
5775 | if (!ret) { |
5776 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
5777 | ||
5778 | if (task->tk_status == 0) | |
5779 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 5780 | ret = task->tk_status; |
b4410c2f | 5781 | } |
71ac6da9 TM |
5782 | rpc_put_task(task); |
5783 | out: | |
5784 | dprintk("<-- %s status=%d\n", __func__, ret); | |
5785 | return ret; | |
fc01cea9 AA |
5786 | } |
5787 | ||
fce5c838 RL |
5788 | struct nfs4_reclaim_complete_data { |
5789 | struct nfs_client *clp; | |
5790 | struct nfs41_reclaim_complete_args arg; | |
5791 | struct nfs41_reclaim_complete_res res; | |
5792 | }; | |
5793 | ||
5794 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
5795 | { | |
5796 | struct nfs4_reclaim_complete_data *calldata = data; | |
5797 | ||
b257957e | 5798 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
035168ab TM |
5799 | if (nfs41_setup_sequence(calldata->clp->cl_session, |
5800 | &calldata->arg.seq_args, | |
9d12b216 | 5801 | &calldata->res.seq_res, task)) |
fce5c838 RL |
5802 | return; |
5803 | ||
5804 | rpc_call_start(task); | |
5805 | } | |
5806 | ||
aa5190d0 TM |
5807 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5808 | { | |
5809 | switch(task->tk_status) { | |
5810 | case 0: | |
5811 | case -NFS4ERR_COMPLETE_ALREADY: | |
5812 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
5813 | break; | |
5814 | case -NFS4ERR_DELAY: | |
aa5190d0 | 5815 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
5816 | /* fall through */ |
5817 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
5818 | return -EAGAIN; |
5819 | default: | |
0400a6b0 | 5820 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5821 | } |
5822 | return 0; | |
5823 | } | |
5824 | ||
fce5c838 RL |
5825 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
5826 | { | |
5827 | struct nfs4_reclaim_complete_data *calldata = data; | |
5828 | struct nfs_client *clp = calldata->clp; | |
5829 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
5830 | ||
5831 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5832 | if (!nfs41_sequence_done(task, res)) |
5833 | return; | |
fce5c838 | 5834 | |
aa5190d0 TM |
5835 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
5836 | rpc_restart_call_prepare(task); | |
5837 | return; | |
5838 | } | |
fce5c838 RL |
5839 | dprintk("<-- %s\n", __func__); |
5840 | } | |
5841 | ||
5842 | static void nfs4_free_reclaim_complete_data(void *data) | |
5843 | { | |
5844 | struct nfs4_reclaim_complete_data *calldata = data; | |
5845 | ||
5846 | kfree(calldata); | |
5847 | } | |
5848 | ||
5849 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
5850 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
5851 | .rpc_call_done = nfs4_reclaim_complete_done, | |
5852 | .rpc_release = nfs4_free_reclaim_complete_data, | |
5853 | }; | |
5854 | ||
5855 | /* | |
5856 | * Issue a global reclaim complete. | |
5857 | */ | |
5858 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
5859 | { | |
5860 | struct nfs4_reclaim_complete_data *calldata; | |
5861 | struct rpc_task *task; | |
5862 | struct rpc_message msg = { | |
5863 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
5864 | }; | |
5865 | struct rpc_task_setup task_setup_data = { | |
5866 | .rpc_client = clp->cl_rpcclient, | |
5867 | .rpc_message = &msg, | |
5868 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
5869 | .flags = RPC_TASK_ASYNC, | |
5870 | }; | |
5871 | int status = -ENOMEM; | |
5872 | ||
5873 | dprintk("--> %s\n", __func__); | |
8535b2be | 5874 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
5875 | if (calldata == NULL) |
5876 | goto out; | |
5877 | calldata->clp = clp; | |
5878 | calldata->arg.one_fs = 0; | |
fce5c838 | 5879 | |
9d12b216 | 5880 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
fce5c838 RL |
5881 | msg.rpc_argp = &calldata->arg; |
5882 | msg.rpc_resp = &calldata->res; | |
5883 | task_setup_data.callback_data = calldata; | |
5884 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 5885 | if (IS_ERR(task)) { |
fce5c838 | 5886 | status = PTR_ERR(task); |
acf82b85 DC |
5887 | goto out; |
5888 | } | |
c34c32ea AA |
5889 | status = nfs4_wait_for_completion_rpc_task(task); |
5890 | if (status == 0) | |
5891 | status = task->tk_status; | |
fce5c838 | 5892 | rpc_put_task(task); |
acf82b85 | 5893 | return 0; |
fce5c838 RL |
5894 | out: |
5895 | dprintk("<-- %s status=%d\n", __func__, status); | |
5896 | return status; | |
5897 | } | |
b1f69b75 AA |
5898 | |
5899 | static void | |
5900 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
5901 | { | |
5902 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 5903 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
b1f69b75 AA |
5904 | |
5905 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
5906 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
5907 | * right now covering the LAYOUTGET we are about to send. | |
5908 | * However, that is not so catastrophic, and there seems | |
5909 | * to be no way to prevent it completely. | |
5910 | */ | |
b1f69b75 | 5911 | if (nfs4_setup_sequence(server, &lgp->args.seq_args, |
9d12b216 | 5912 | &lgp->res.seq_res, task)) |
b1f69b75 | 5913 | return; |
cf7d63f1 FI |
5914 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
5915 | NFS_I(lgp->args.inode)->layout, | |
5916 | lgp->args.ctx->state)) { | |
5917 | rpc_exit(task, NFS4_OK); | |
5918 | return; | |
5919 | } | |
b1f69b75 AA |
5920 | rpc_call_start(task); |
5921 | } | |
5922 | ||
5923 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
5924 | { | |
5925 | struct nfs4_layoutget *lgp = calldata; | |
5926 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5927 | ||
5928 | dprintk("--> %s\n", __func__); | |
5929 | ||
5930 | if (!nfs4_sequence_done(task, &lgp->res.seq_res)) | |
5931 | return; | |
5932 | ||
5933 | switch (task->tk_status) { | |
5934 | case 0: | |
5935 | break; | |
5936 | case -NFS4ERR_LAYOUTTRYLATER: | |
5937 | case -NFS4ERR_RECALLCONFLICT: | |
5938 | task->tk_status = -NFS4ERR_DELAY; | |
5939 | /* Fall through */ | |
5940 | default: | |
5941 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
5942 | rpc_restart_call_prepare(task); | |
5943 | return; | |
5944 | } | |
5945 | } | |
b1f69b75 AA |
5946 | dprintk("<-- %s\n", __func__); |
5947 | } | |
5948 | ||
5949 | static void nfs4_layoutget_release(void *calldata) | |
5950 | { | |
5951 | struct nfs4_layoutget *lgp = calldata; | |
5952 | ||
5953 | dprintk("--> %s\n", __func__); | |
b1f69b75 AA |
5954 | put_nfs_open_context(lgp->args.ctx); |
5955 | kfree(calldata); | |
5956 | dprintk("<-- %s\n", __func__); | |
5957 | } | |
5958 | ||
5959 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
5960 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
5961 | .rpc_call_done = nfs4_layoutget_done, | |
5962 | .rpc_release = nfs4_layoutget_release, | |
5963 | }; | |
5964 | ||
5965 | int nfs4_proc_layoutget(struct nfs4_layoutget *lgp) | |
5966 | { | |
5967 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5968 | struct rpc_task *task; | |
5969 | struct rpc_message msg = { | |
5970 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
5971 | .rpc_argp = &lgp->args, | |
5972 | .rpc_resp = &lgp->res, | |
5973 | }; | |
5974 | struct rpc_task_setup task_setup_data = { | |
5975 | .rpc_client = server->client, | |
5976 | .rpc_message = &msg, | |
5977 | .callback_ops = &nfs4_layoutget_call_ops, | |
5978 | .callback_data = lgp, | |
5979 | .flags = RPC_TASK_ASYNC, | |
5980 | }; | |
5981 | int status = 0; | |
5982 | ||
5983 | dprintk("--> %s\n", __func__); | |
5984 | ||
35124a09 | 5985 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 5986 | lgp->res.seq_res.sr_slot = NULL; |
9d12b216 | 5987 | nfs41_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
b1f69b75 AA |
5988 | task = rpc_run_task(&task_setup_data); |
5989 | if (IS_ERR(task)) | |
5990 | return PTR_ERR(task); | |
5991 | status = nfs4_wait_for_completion_rpc_task(task); | |
c31663d4 FI |
5992 | if (status == 0) |
5993 | status = task->tk_status; | |
5994 | if (status == 0) | |
5995 | status = pnfs_layout_process(lgp); | |
b1f69b75 AA |
5996 | rpc_put_task(task); |
5997 | dprintk("<-- %s status=%d\n", __func__, status); | |
5998 | return status; | |
5999 | } | |
6000 | ||
cbe82603 BH |
6001 | static void |
6002 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
6003 | { | |
6004 | struct nfs4_layoutreturn *lrp = calldata; | |
6005 | ||
6006 | dprintk("--> %s\n", __func__); | |
6007 | if (nfs41_setup_sequence(lrp->clp->cl_session, &lrp->args.seq_args, | |
9d12b216 | 6008 | &lrp->res.seq_res, task)) |
cbe82603 BH |
6009 | return; |
6010 | rpc_call_start(task); | |
6011 | } | |
6012 | ||
6013 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
6014 | { | |
6015 | struct nfs4_layoutreturn *lrp = calldata; | |
6016 | struct nfs_server *server; | |
a56aaa02 | 6017 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
6018 | |
6019 | dprintk("--> %s\n", __func__); | |
6020 | ||
6021 | if (!nfs4_sequence_done(task, &lrp->res.seq_res)) | |
6022 | return; | |
6023 | ||
6024 | server = NFS_SERVER(lrp->args.inode); | |
6025 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 6026 | rpc_restart_call_prepare(task); |
cbe82603 BH |
6027 | return; |
6028 | } | |
a2e1d4f2 | 6029 | spin_lock(&lo->plh_inode->i_lock); |
cbe82603 | 6030 | if (task->tk_status == 0) { |
cbe82603 | 6031 | if (lrp->res.lrs_present) { |
cbe82603 | 6032 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); |
cbe82603 BH |
6033 | } else |
6034 | BUG_ON(!list_empty(&lo->plh_segs)); | |
6035 | } | |
a2e1d4f2 FI |
6036 | lo->plh_block_lgets--; |
6037 | spin_unlock(&lo->plh_inode->i_lock); | |
cbe82603 BH |
6038 | dprintk("<-- %s\n", __func__); |
6039 | } | |
6040 | ||
6041 | static void nfs4_layoutreturn_release(void *calldata) | |
6042 | { | |
6043 | struct nfs4_layoutreturn *lrp = calldata; | |
6044 | ||
6045 | dprintk("--> %s\n", __func__); | |
a56aaa02 | 6046 | put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
6047 | kfree(calldata); |
6048 | dprintk("<-- %s\n", __func__); | |
6049 | } | |
6050 | ||
6051 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
6052 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
6053 | .rpc_call_done = nfs4_layoutreturn_done, | |
6054 | .rpc_release = nfs4_layoutreturn_release, | |
6055 | }; | |
6056 | ||
6057 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
6058 | { | |
6059 | struct rpc_task *task; | |
6060 | struct rpc_message msg = { | |
6061 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
6062 | .rpc_argp = &lrp->args, | |
6063 | .rpc_resp = &lrp->res, | |
6064 | }; | |
6065 | struct rpc_task_setup task_setup_data = { | |
6066 | .rpc_client = lrp->clp->cl_rpcclient, | |
6067 | .rpc_message = &msg, | |
6068 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
6069 | .callback_data = lrp, | |
6070 | }; | |
6071 | int status; | |
6072 | ||
6073 | dprintk("--> %s\n", __func__); | |
9d12b216 | 6074 | nfs41_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
6075 | task = rpc_run_task(&task_setup_data); |
6076 | if (IS_ERR(task)) | |
6077 | return PTR_ERR(task); | |
6078 | status = task->tk_status; | |
6079 | dprintk("<-- %s status=%d\n", __func__, status); | |
6080 | rpc_put_task(task); | |
6081 | return status; | |
6082 | } | |
6083 | ||
7f11d8d3 AA |
6084 | /* |
6085 | * Retrieve the list of Data Server devices from the MDS. | |
6086 | */ | |
6087 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
6088 | const struct nfs_fh *fh, | |
6089 | struct pnfs_devicelist *devlist) | |
6090 | { | |
6091 | struct nfs4_getdevicelist_args args = { | |
6092 | .fh = fh, | |
6093 | .layoutclass = server->pnfs_curr_ld->id, | |
6094 | }; | |
6095 | struct nfs4_getdevicelist_res res = { | |
6096 | .devlist = devlist, | |
6097 | }; | |
6098 | struct rpc_message msg = { | |
6099 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
6100 | .rpc_argp = &args, | |
6101 | .rpc_resp = &res, | |
6102 | }; | |
6103 | int status; | |
6104 | ||
6105 | dprintk("--> %s\n", __func__); | |
6106 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
6107 | &res.seq_res, 0); | |
6108 | dprintk("<-- %s status=%d\n", __func__, status); | |
6109 | return status; | |
6110 | } | |
6111 | ||
6112 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
6113 | const struct nfs_fh *fh, | |
6114 | struct pnfs_devicelist *devlist) | |
6115 | { | |
6116 | struct nfs4_exception exception = { }; | |
6117 | int err; | |
6118 | ||
6119 | do { | |
6120 | err = nfs4_handle_exception(server, | |
6121 | _nfs4_getdevicelist(server, fh, devlist), | |
6122 | &exception); | |
6123 | } while (exception.retry); | |
6124 | ||
6125 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
6126 | err, devlist->num_devs); | |
6127 | ||
6128 | return err; | |
6129 | } | |
6130 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
6131 | ||
b1f69b75 AA |
6132 | static int |
6133 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6134 | { | |
6135 | struct nfs4_getdeviceinfo_args args = { | |
6136 | .pdev = pdev, | |
6137 | }; | |
6138 | struct nfs4_getdeviceinfo_res res = { | |
6139 | .pdev = pdev, | |
6140 | }; | |
6141 | struct rpc_message msg = { | |
6142 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
6143 | .rpc_argp = &args, | |
6144 | .rpc_resp = &res, | |
6145 | }; | |
6146 | int status; | |
6147 | ||
6148 | dprintk("--> %s\n", __func__); | |
7c513058 | 6149 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
6150 | dprintk("<-- %s status=%d\n", __func__, status); |
6151 | ||
6152 | return status; | |
6153 | } | |
6154 | ||
6155 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6156 | { | |
6157 | struct nfs4_exception exception = { }; | |
6158 | int err; | |
6159 | ||
6160 | do { | |
6161 | err = nfs4_handle_exception(server, | |
6162 | _nfs4_proc_getdeviceinfo(server, pdev), | |
6163 | &exception); | |
6164 | } while (exception.retry); | |
6165 | return err; | |
6166 | } | |
6167 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
6168 | ||
863a3c6c AA |
6169 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
6170 | { | |
6171 | struct nfs4_layoutcommit_data *data = calldata; | |
6172 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6173 | ||
6174 | if (nfs4_setup_sequence(server, &data->args.seq_args, | |
9d12b216 | 6175 | &data->res.seq_res, task)) |
863a3c6c AA |
6176 | return; |
6177 | rpc_call_start(task); | |
6178 | } | |
6179 | ||
6180 | static void | |
6181 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
6182 | { | |
6183 | struct nfs4_layoutcommit_data *data = calldata; | |
6184 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6185 | ||
6186 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
6187 | return; | |
6188 | ||
6189 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
6190 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
6191 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
6192 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
6193 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 6194 | task->tk_status = 0; |
e59d27e0 TM |
6195 | break; |
6196 | case 0: | |
863a3c6c AA |
6197 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
6198 | data->res.fattr); | |
e59d27e0 TM |
6199 | break; |
6200 | default: | |
6201 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
6202 | rpc_restart_call_prepare(task); | |
6203 | return; | |
6204 | } | |
6205 | } | |
863a3c6c AA |
6206 | } |
6207 | ||
6208 | static void nfs4_layoutcommit_release(void *calldata) | |
6209 | { | |
6210 | struct nfs4_layoutcommit_data *data = calldata; | |
a9bae566 | 6211 | struct pnfs_layout_segment *lseg, *tmp; |
92407e75 | 6212 | unsigned long *bitlock = &NFS_I(data->args.inode)->flags; |
863a3c6c | 6213 | |
db29c089 | 6214 | pnfs_cleanup_layoutcommit(data); |
863a3c6c | 6215 | /* Matched by references in pnfs_set_layoutcommit */ |
a9bae566 PT |
6216 | list_for_each_entry_safe(lseg, tmp, &data->lseg_list, pls_lc_list) { |
6217 | list_del_init(&lseg->pls_lc_list); | |
6218 | if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT, | |
6219 | &lseg->pls_flags)) | |
6220 | put_lseg(lseg); | |
6221 | } | |
92407e75 PT |
6222 | |
6223 | clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING, bitlock); | |
6224 | smp_mb__after_clear_bit(); | |
6225 | wake_up_bit(bitlock, NFS_INO_LAYOUTCOMMITTING); | |
6226 | ||
863a3c6c AA |
6227 | put_rpccred(data->cred); |
6228 | kfree(data); | |
6229 | } | |
6230 | ||
6231 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
6232 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
6233 | .rpc_call_done = nfs4_layoutcommit_done, | |
6234 | .rpc_release = nfs4_layoutcommit_release, | |
6235 | }; | |
6236 | ||
6237 | int | |
ef311537 | 6238 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
6239 | { |
6240 | struct rpc_message msg = { | |
6241 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
6242 | .rpc_argp = &data->args, | |
6243 | .rpc_resp = &data->res, | |
6244 | .rpc_cred = data->cred, | |
6245 | }; | |
6246 | struct rpc_task_setup task_setup_data = { | |
6247 | .task = &data->task, | |
6248 | .rpc_client = NFS_CLIENT(data->args.inode), | |
6249 | .rpc_message = &msg, | |
6250 | .callback_ops = &nfs4_layoutcommit_ops, | |
6251 | .callback_data = data, | |
6252 | .flags = RPC_TASK_ASYNC, | |
6253 | }; | |
6254 | struct rpc_task *task; | |
6255 | int status = 0; | |
6256 | ||
6257 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
6258 | "lbw: %llu inode %lu\n", | |
6259 | data->task.tk_pid, sync, | |
6260 | data->args.lastbytewritten, | |
6261 | data->args.inode->i_ino); | |
6262 | ||
9d12b216 | 6263 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
6264 | task = rpc_run_task(&task_setup_data); |
6265 | if (IS_ERR(task)) | |
6266 | return PTR_ERR(task); | |
ef311537 | 6267 | if (sync == false) |
863a3c6c AA |
6268 | goto out; |
6269 | status = nfs4_wait_for_completion_rpc_task(task); | |
6270 | if (status != 0) | |
6271 | goto out; | |
6272 | status = task->tk_status; | |
6273 | out: | |
6274 | dprintk("%s: status %d\n", __func__, status); | |
6275 | rpc_put_task(task); | |
6276 | return status; | |
6277 | } | |
fca78d6d BS |
6278 | |
6279 | static int | |
6280 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6281 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6282 | { | |
6283 | struct nfs41_secinfo_no_name_args args = { | |
6284 | .style = SECINFO_STYLE_CURRENT_FH, | |
6285 | }; | |
6286 | struct nfs4_secinfo_res res = { | |
6287 | .flavors = flavors, | |
6288 | }; | |
6289 | struct rpc_message msg = { | |
6290 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
6291 | .rpc_argp = &args, | |
6292 | .rpc_resp = &res, | |
6293 | }; | |
6294 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); | |
6295 | } | |
6296 | ||
6297 | static int | |
6298 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6299 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6300 | { | |
6301 | struct nfs4_exception exception = { }; | |
6302 | int err; | |
6303 | do { | |
6304 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6305 | switch (err) { | |
6306 | case 0: | |
6307 | case -NFS4ERR_WRONGSEC: | |
6308 | case -NFS4ERR_NOTSUPP: | |
05e9cfb4 | 6309 | goto out; |
fca78d6d BS |
6310 | default: |
6311 | err = nfs4_handle_exception(server, err, &exception); | |
6312 | } | |
6313 | } while (exception.retry); | |
05e9cfb4 | 6314 | out: |
fca78d6d BS |
6315 | return err; |
6316 | } | |
6317 | ||
6318 | static int | |
6319 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
6320 | struct nfs_fsinfo *info) | |
6321 | { | |
6322 | int err; | |
6323 | struct page *page; | |
6324 | rpc_authflavor_t flavor; | |
6325 | struct nfs4_secinfo_flavors *flavors; | |
6326 | ||
6327 | page = alloc_page(GFP_KERNEL); | |
6328 | if (!page) { | |
6329 | err = -ENOMEM; | |
6330 | goto out; | |
6331 | } | |
6332 | ||
6333 | flavors = page_address(page); | |
6334 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6335 | ||
6336 | /* | |
6337 | * Fall back on "guess and check" method if | |
6338 | * the server doesn't support SECINFO_NO_NAME | |
6339 | */ | |
6340 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
6341 | err = nfs4_find_root_sec(server, fhandle, info); | |
6342 | goto out_freepage; | |
6343 | } | |
6344 | if (err) | |
6345 | goto out_freepage; | |
6346 | ||
6347 | flavor = nfs_find_best_sec(flavors); | |
6348 | if (err == 0) | |
6349 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
6350 | ||
6351 | out_freepage: | |
6352 | put_page(page); | |
6353 | if (err == -EACCES) | |
6354 | return -EPERM; | |
6355 | out: | |
6356 | return err; | |
6357 | } | |
1cab0652 BS |
6358 | |
6359 | static int _nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) | |
7d974794 BS |
6360 | { |
6361 | int status; | |
6362 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 6363 | .stateid = stateid, |
7d974794 BS |
6364 | }; |
6365 | struct nfs41_test_stateid_res res; | |
6366 | struct rpc_message msg = { | |
6367 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
6368 | .rpc_argp = &args, | |
6369 | .rpc_resp = &res, | |
6370 | }; | |
1cab0652 | 6371 | |
9d12b216 | 6372 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
1cab0652 BS |
6373 | status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
6374 | ||
6375 | if (status == NFS_OK) | |
6376 | return res.status; | |
7d974794 BS |
6377 | return status; |
6378 | } | |
6379 | ||
1cab0652 | 6380 | static int nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
7d974794 BS |
6381 | { |
6382 | struct nfs4_exception exception = { }; | |
6383 | int err; | |
6384 | do { | |
6385 | err = nfs4_handle_exception(server, | |
1cab0652 | 6386 | _nfs41_test_stateid(server, stateid), |
7d974794 BS |
6387 | &exception); |
6388 | } while (exception.retry); | |
6389 | return err; | |
6390 | } | |
9aeda35f | 6391 | |
1cab0652 | 6392 | static int _nfs4_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f | 6393 | { |
9aeda35f | 6394 | struct nfs41_free_stateid_args args = { |
1cab0652 | 6395 | .stateid = stateid, |
9aeda35f BS |
6396 | }; |
6397 | struct nfs41_free_stateid_res res; | |
6398 | struct rpc_message msg = { | |
6399 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
6400 | .rpc_argp = &args, | |
6401 | .rpc_resp = &res, | |
6402 | }; | |
6403 | ||
9d12b216 TM |
6404 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
6405 | return nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); | |
9aeda35f BS |
6406 | } |
6407 | ||
1cab0652 | 6408 | static int nfs41_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f BS |
6409 | { |
6410 | struct nfs4_exception exception = { }; | |
6411 | int err; | |
6412 | do { | |
6413 | err = nfs4_handle_exception(server, | |
1cab0652 | 6414 | _nfs4_free_stateid(server, stateid), |
9aeda35f BS |
6415 | &exception); |
6416 | } while (exception.retry); | |
6417 | return err; | |
6418 | } | |
36281caa TM |
6419 | |
6420 | static bool nfs41_match_stateid(const nfs4_stateid *s1, | |
6421 | const nfs4_stateid *s2) | |
6422 | { | |
2d2f24ad | 6423 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
6424 | return false; |
6425 | ||
2d2f24ad | 6426 | if (s1->seqid == s2->seqid) |
36281caa | 6427 | return true; |
2d2f24ad | 6428 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
6429 | return true; |
6430 | ||
6431 | return false; | |
6432 | } | |
6433 | ||
557134a3 AA |
6434 | #endif /* CONFIG_NFS_V4_1 */ |
6435 | ||
36281caa TM |
6436 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
6437 | const nfs4_stateid *s2) | |
6438 | { | |
f597c537 | 6439 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
6440 | } |
6441 | ||
6442 | ||
17280175 | 6443 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 6444 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 6445 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
6446 | .recover_open = nfs4_open_reclaim, |
6447 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 6448 | .establish_clid = nfs4_init_clientid, |
90a16617 | 6449 | .get_clid_cred = nfs4_get_setclientid_cred, |
1da177e4 LT |
6450 | }; |
6451 | ||
591d71cb | 6452 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 6453 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
6454 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
6455 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
6456 | .recover_open = nfs4_open_reclaim, | |
6457 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 6458 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6459 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 6460 | .reclaim_complete = nfs41_proc_reclaim_complete, |
591d71cb AA |
6461 | }; |
6462 | #endif /* CONFIG_NFS_V4_1 */ | |
6463 | ||
17280175 | 6464 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
6465 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
6466 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
6467 | .recover_open = nfs4_open_expired, | |
6468 | .recover_lock = nfs4_lock_expired, | |
6469 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 6470 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
6471 | }; |
6472 | ||
6473 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 6474 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 6475 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 6476 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
6477 | .recover_open = nfs41_open_expired, |
6478 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 6479 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6480 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 6481 | }; |
591d71cb | 6482 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 6483 | |
17280175 | 6484 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 6485 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 6486 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 6487 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
6488 | }; |
6489 | ||
6490 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 6491 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 6492 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 6493 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 6494 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
6495 | }; |
6496 | #endif | |
6497 | ||
97dc1359 TM |
6498 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
6499 | .minor_version = 0, | |
6500 | .call_sync = _nfs4_call_sync, | |
36281caa | 6501 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 6502 | .find_root_sec = nfs4_find_root_sec, |
c48f4f35 TM |
6503 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
6504 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
6505 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
6506 | }; |
6507 | ||
6508 | #if defined(CONFIG_NFS_V4_1) | |
6509 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
6510 | .minor_version = 1, | |
6511 | .call_sync = _nfs4_call_sync_session, | |
36281caa | 6512 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 6513 | .find_root_sec = nfs41_find_root_sec, |
c48f4f35 TM |
6514 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
6515 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
6516 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
6517 | }; |
6518 | #endif | |
6519 | ||
97dc1359 TM |
6520 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
6521 | [0] = &nfs_v4_0_minor_ops, | |
6522 | #if defined(CONFIG_NFS_V4_1) | |
6523 | [1] = &nfs_v4_1_minor_ops, | |
6524 | #endif | |
6525 | }; | |
6526 | ||
92e1d5be | 6527 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
6528 | .permission = nfs_permission, |
6529 | .getattr = nfs_getattr, | |
6530 | .setattr = nfs_setattr, | |
64c2ce8b AK |
6531 | .getxattr = generic_getxattr, |
6532 | .setxattr = generic_setxattr, | |
6533 | .listxattr = generic_listxattr, | |
6534 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
6535 | }; |
6536 | ||
509de811 | 6537 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
6538 | .version = 4, /* protocol version */ |
6539 | .dentry_ops = &nfs4_dentry_operations, | |
6540 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 6541 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 6542 | .file_ops = &nfs4_file_operations, |
bae36241 | 6543 | .getroot = nfs4_proc_get_root, |
281cad46 | 6544 | .submount = nfs4_submount, |
1da177e4 LT |
6545 | .getattr = nfs4_proc_getattr, |
6546 | .setattr = nfs4_proc_setattr, | |
6547 | .lookup = nfs4_proc_lookup, | |
6548 | .access = nfs4_proc_access, | |
6549 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
6550 | .create = nfs4_proc_create, |
6551 | .remove = nfs4_proc_remove, | |
6552 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 6553 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 LT |
6554 | .unlink_done = nfs4_proc_unlink_done, |
6555 | .rename = nfs4_proc_rename, | |
d3d4152a | 6556 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 6557 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 6558 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
6559 | .link = nfs4_proc_link, |
6560 | .symlink = nfs4_proc_symlink, | |
6561 | .mkdir = nfs4_proc_mkdir, | |
6562 | .rmdir = nfs4_proc_remove, | |
6563 | .readdir = nfs4_proc_readdir, | |
6564 | .mknod = nfs4_proc_mknod, | |
6565 | .statfs = nfs4_proc_statfs, | |
6566 | .fsinfo = nfs4_proc_fsinfo, | |
6567 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 6568 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
6569 | .decode_dirent = nfs4_decode_dirent, |
6570 | .read_setup = nfs4_proc_read_setup, | |
ea7c3303 | 6571 | .read_rpc_prepare = nfs4_proc_read_rpc_prepare, |
ec06c096 | 6572 | .read_done = nfs4_read_done, |
1da177e4 | 6573 | .write_setup = nfs4_proc_write_setup, |
c6cb80d0 | 6574 | .write_rpc_prepare = nfs4_proc_write_rpc_prepare, |
788e7a89 | 6575 | .write_done = nfs4_write_done, |
1da177e4 | 6576 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 6577 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 6578 | .commit_done = nfs4_commit_done, |
1da177e4 | 6579 | .lock = nfs4_proc_lock, |
e50a1c2e | 6580 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 6581 | .close_context = nfs4_close_context, |
2b484297 | 6582 | .open_context = nfs4_atomic_open, |
45a52a02 | 6583 | .init_client = nfs4_init_client, |
1da177e4 LT |
6584 | }; |
6585 | ||
64c2ce8b AK |
6586 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
6587 | .prefix = XATTR_NAME_NFSV4_ACL, | |
6588 | .list = nfs4_xattr_list_nfs4_acl, | |
6589 | .get = nfs4_xattr_get_nfs4_acl, | |
6590 | .set = nfs4_xattr_set_nfs4_acl, | |
6591 | }; | |
6592 | ||
6593 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
6594 | &nfs4_xattr_nfs4_acl_handler, | |
6595 | NULL | |
6596 | }; | |
6597 | ||
ef159e91 TM |
6598 | module_param(max_session_slots, ushort, 0644); |
6599 | MODULE_PARM_DESC(max_session_slots, "Maximum number of outstanding NFSv4.1 " | |
6600 | "requests the client will negotiate"); | |
6601 | ||
1da177e4 LT |
6602 | /* |
6603 | * Local variables: | |
6604 | * c-basic-offset: 8 | |
6605 | * End: | |
6606 | */ |