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 LT |
45 | #include <linux/sunrpc/clnt.h> |
46 | #include <linux/nfs.h> | |
47 | #include <linux/nfs4.h> | |
48 | #include <linux/nfs_fs.h> | |
49 | #include <linux/nfs_page.h> | |
9b7160c5 | 50 | #include <linux/nfs_mount.h> |
1da177e4 | 51 | #include <linux/namei.h> |
02a913a7 | 52 | #include <linux/mount.h> |
99fe60d0 | 53 | #include <linux/module.h> |
6926afd1 | 54 | #include <linux/nfs_idmap.h> |
64c2ce8b | 55 | #include <linux/xattr.h> |
c7a360b0 | 56 | #include <linux/utsname.h> |
d310310c | 57 | #include <linux/freezer.h> |
1da177e4 | 58 | |
4ce79717 | 59 | #include "nfs4_fs.h" |
1da177e4 | 60 | #include "delegation.h" |
101070ca | 61 | #include "internal.h" |
006ea73e | 62 | #include "iostat.h" |
fc931582 | 63 | #include "callback.h" |
b1f69b75 | 64 | #include "pnfs.h" |
f092075d | 65 | #include "netns.h" |
73e39aaa TM |
66 | #include "nfs4session.h" |
67 | ||
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 | ||
cdd4e68b | 74 | struct nfs4_opendata; |
864472e9 | 75 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
b257957e | 76 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data); |
1da177e4 | 77 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
9e33bed5 | 78 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *); |
81934ddb | 79 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); |
bae36241 | 80 | static int nfs4_proc_getattr(struct nfs_server *, struct nfs_fh *, struct nfs_fattr *); |
9936781d | 81 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr); |
0ab64e0e TM |
82 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
83 | struct nfs_fattr *fattr, struct iattr *sattr, | |
84 | struct nfs4_state *state); | |
f062eb6c | 85 | #ifdef CONFIG_NFS_V4_1 |
1cab0652 BS |
86 | static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *); |
87 | static int nfs41_free_stateid(struct nfs_server *, nfs4_stateid *); | |
f062eb6c | 88 | #endif |
1da177e4 | 89 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 90 | static int nfs4_map_errors(int err) |
1da177e4 | 91 | { |
52567b03 TM |
92 | if (err >= -1000) |
93 | return err; | |
94 | switch (err) { | |
95 | case -NFS4ERR_RESOURCE: | |
96 | return -EREMOTEIO; | |
7ebb9315 BS |
97 | case -NFS4ERR_WRONGSEC: |
98 | return -EPERM; | |
3ddeb7c5 TM |
99 | case -NFS4ERR_BADOWNER: |
100 | case -NFS4ERR_BADNAME: | |
101 | return -EINVAL; | |
fb13bfa7 TM |
102 | case -NFS4ERR_SHARE_DENIED: |
103 | return -EACCES; | |
f25efd85 SD |
104 | case -NFS4ERR_MINOR_VERS_MISMATCH: |
105 | return -EPROTONOSUPPORT; | |
6168f62c WAA |
106 | case -NFS4ERR_ACCESS: |
107 | return -EACCES; | |
52567b03 | 108 | default: |
1da177e4 | 109 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 110 | __func__, -err); |
52567b03 | 111 | break; |
1da177e4 | 112 | } |
52567b03 | 113 | return -EIO; |
1da177e4 LT |
114 | } |
115 | ||
116 | /* | |
117 | * This is our standard bitmap for GETATTR requests. | |
118 | */ | |
1549210f | 119 | const u32 nfs4_fattr_bitmap[3] = { |
1da177e4 LT |
120 | FATTR4_WORD0_TYPE |
121 | | FATTR4_WORD0_CHANGE | |
122 | | FATTR4_WORD0_SIZE | |
123 | | FATTR4_WORD0_FSID | |
124 | | FATTR4_WORD0_FILEID, | |
125 | FATTR4_WORD1_MODE | |
126 | | FATTR4_WORD1_NUMLINKS | |
127 | | FATTR4_WORD1_OWNER | |
128 | | FATTR4_WORD1_OWNER_GROUP | |
129 | | FATTR4_WORD1_RAWDEV | |
130 | | FATTR4_WORD1_SPACE_USED | |
131 | | FATTR4_WORD1_TIME_ACCESS | |
132 | | FATTR4_WORD1_TIME_METADATA | |
133 | | FATTR4_WORD1_TIME_MODIFY | |
134 | }; | |
135 | ||
1549210f TM |
136 | static const u32 nfs4_pnfs_open_bitmap[3] = { |
137 | FATTR4_WORD0_TYPE | |
138 | | FATTR4_WORD0_CHANGE | |
139 | | FATTR4_WORD0_SIZE | |
140 | | FATTR4_WORD0_FSID | |
141 | | FATTR4_WORD0_FILEID, | |
142 | FATTR4_WORD1_MODE | |
143 | | FATTR4_WORD1_NUMLINKS | |
144 | | FATTR4_WORD1_OWNER | |
145 | | FATTR4_WORD1_OWNER_GROUP | |
146 | | FATTR4_WORD1_RAWDEV | |
147 | | FATTR4_WORD1_SPACE_USED | |
148 | | FATTR4_WORD1_TIME_ACCESS | |
149 | | FATTR4_WORD1_TIME_METADATA | |
150 | | FATTR4_WORD1_TIME_MODIFY, | |
151 | FATTR4_WORD2_MDSTHRESHOLD | |
152 | }; | |
153 | ||
e23008ec AA |
154 | static const u32 nfs4_open_noattr_bitmap[3] = { |
155 | FATTR4_WORD0_TYPE | |
156 | | FATTR4_WORD0_CHANGE | |
157 | | FATTR4_WORD0_FILEID, | |
158 | }; | |
159 | ||
1da177e4 LT |
160 | const u32 nfs4_statfs_bitmap[2] = { |
161 | FATTR4_WORD0_FILES_AVAIL | |
162 | | FATTR4_WORD0_FILES_FREE | |
163 | | FATTR4_WORD0_FILES_TOTAL, | |
164 | FATTR4_WORD1_SPACE_AVAIL | |
165 | | FATTR4_WORD1_SPACE_FREE | |
166 | | FATTR4_WORD1_SPACE_TOTAL | |
167 | }; | |
168 | ||
4ce79717 | 169 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
170 | FATTR4_WORD0_MAXLINK |
171 | | FATTR4_WORD0_MAXNAME, | |
172 | 0 | |
173 | }; | |
174 | ||
dae100c2 | 175 | const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE |
1da177e4 LT |
176 | | FATTR4_WORD0_MAXREAD |
177 | | FATTR4_WORD0_MAXWRITE | |
178 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 179 | FATTR4_WORD1_TIME_DELTA |
dae100c2 FI |
180 | | FATTR4_WORD1_FS_LAYOUT_TYPES, |
181 | FATTR4_WORD2_LAYOUT_BLKSIZE | |
1da177e4 LT |
182 | }; |
183 | ||
830b8e33 MN |
184 | const u32 nfs4_fs_locations_bitmap[2] = { |
185 | FATTR4_WORD0_TYPE | |
186 | | FATTR4_WORD0_CHANGE | |
187 | | FATTR4_WORD0_SIZE | |
188 | | FATTR4_WORD0_FSID | |
189 | | FATTR4_WORD0_FILEID | |
190 | | FATTR4_WORD0_FS_LOCATIONS, | |
191 | FATTR4_WORD1_MODE | |
192 | | FATTR4_WORD1_NUMLINKS | |
193 | | FATTR4_WORD1_OWNER | |
194 | | FATTR4_WORD1_OWNER_GROUP | |
195 | | FATTR4_WORD1_RAWDEV | |
196 | | FATTR4_WORD1_SPACE_USED | |
197 | | FATTR4_WORD1_TIME_ACCESS | |
198 | | FATTR4_WORD1_TIME_METADATA | |
199 | | FATTR4_WORD1_TIME_MODIFY | |
200 | | FATTR4_WORD1_MOUNTED_ON_FILEID | |
201 | }; | |
202 | ||
bc4785cd | 203 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
204 | struct nfs4_readdir_arg *readdir) |
205 | { | |
0dbb4c67 | 206 | __be32 *start, *p; |
1da177e4 | 207 | |
1da177e4 | 208 | if (cookie > 2) { |
b7ef1956 | 209 | readdir->cookie = cookie; |
1da177e4 LT |
210 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
211 | return; | |
212 | } | |
213 | ||
214 | readdir->cookie = 0; | |
215 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
216 | if (cookie == 2) | |
217 | return; | |
218 | ||
219 | /* | |
220 | * NFSv4 servers do not return entries for '.' and '..' | |
221 | * Therefore, we fake these entries here. We let '.' | |
222 | * have cookie 0 and '..' have cookie 1. Note that | |
223 | * when talking to the server, we always send cookie 0 | |
224 | * instead of 1 or 2. | |
225 | */ | |
2b86ce2d | 226 | start = p = kmap_atomic(*readdir->pages); |
1da177e4 LT |
227 | |
228 | if (cookie == 0) { | |
229 | *p++ = xdr_one; /* next */ | |
230 | *p++ = xdr_zero; /* cookie, first word */ | |
231 | *p++ = xdr_one; /* cookie, second word */ | |
232 | *p++ = xdr_one; /* entry len */ | |
233 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
234 | p++; | |
235 | *p++ = xdr_one; /* bitmap length */ | |
236 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
237 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 238 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
239 | } |
240 | ||
241 | *p++ = xdr_one; /* next */ | |
242 | *p++ = xdr_zero; /* cookie, first word */ | |
243 | *p++ = xdr_two; /* cookie, second word */ | |
244 | *p++ = xdr_two; /* entry len */ | |
245 | memcpy(p, "..\0\0", 4); /* entry */ | |
246 | p++; | |
247 | *p++ = xdr_one; /* bitmap length */ | |
248 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
249 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 250 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
251 | |
252 | readdir->pgbase = (char *)p - (char *)start; | |
253 | readdir->count -= readdir->pgbase; | |
2b86ce2d | 254 | kunmap_atomic(start); |
1da177e4 LT |
255 | } |
256 | ||
65de872e TM |
257 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) |
258 | { | |
259 | int res = 0; | |
260 | ||
261 | might_sleep(); | |
262 | ||
263 | if (*timeout <= 0) | |
264 | *timeout = NFS4_POLL_RETRY_MIN; | |
265 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
266 | *timeout = NFS4_POLL_RETRY_MAX; | |
d310310c | 267 | freezable_schedule_timeout_killable(*timeout); |
65de872e TM |
268 | if (fatal_signal_pending(current)) |
269 | res = -ERESTARTSYS; | |
270 | *timeout <<= 1; | |
271 | return res; | |
272 | } | |
273 | ||
274 | /* This is the error handling routine for processes that are allowed | |
275 | * to sleep. | |
276 | */ | |
b064eca2 | 277 | static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
65de872e TM |
278 | { |
279 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 280 | struct nfs4_state *state = exception->state; |
3114ea7a | 281 | struct inode *inode = exception->inode; |
65de872e TM |
282 | int ret = errorcode; |
283 | ||
284 | exception->retry = 0; | |
285 | switch(errorcode) { | |
286 | case 0: | |
287 | return 0; | |
3114ea7a | 288 | case -NFS4ERR_OPENMODE: |
011e2a7f | 289 | if (inode && nfs4_have_delegation(inode, FMODE_READ)) { |
57ec14c5 | 290 | nfs4_inode_return_delegation(inode); |
3114ea7a TM |
291 | exception->retry = 1; |
292 | return 0; | |
293 | } | |
294 | if (state == NULL) | |
295 | break; | |
296 | nfs4_schedule_stateid_recovery(server, state); | |
297 | goto wait_on_recovery; | |
a1d0b5ee | 298 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
299 | case -NFS4ERR_ADMIN_REVOKED: |
300 | case -NFS4ERR_BAD_STATEID: | |
9e33bed5 TM |
301 | if (state == NULL) |
302 | break; | |
14977489 | 303 | nfs_remove_bad_delegation(state->inode); |
0400a6b0 TM |
304 | nfs4_schedule_stateid_recovery(server, state); |
305 | goto wait_on_recovery; | |
0ced63d1 TM |
306 | case -NFS4ERR_EXPIRED: |
307 | if (state != NULL) | |
308 | nfs4_schedule_stateid_recovery(server, state); | |
65de872e | 309 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 310 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
311 | nfs4_schedule_lease_recovery(clp); |
312 | goto wait_on_recovery; | |
03391693 | 313 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
314 | case -NFS4ERR_BADSESSION: |
315 | case -NFS4ERR_BADSLOT: | |
316 | case -NFS4ERR_BAD_HIGH_SLOT: | |
317 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
318 | case -NFS4ERR_DEADSESSION: | |
319 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
320 | case -NFS4ERR_SEQ_MISORDERED: | |
321 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
322 | errorcode); | |
9f594791 | 323 | nfs4_schedule_session_recovery(clp->cl_session, errorcode); |
399f11c3 | 324 | goto wait_on_recovery; |
03391693 | 325 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 326 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
327 | if (exception->timeout > HZ) { |
328 | /* We have retried a decent amount, time to | |
329 | * fail | |
330 | */ | |
331 | ret = -EBUSY; | |
332 | break; | |
333 | } | |
65de872e TM |
334 | case -NFS4ERR_GRACE: |
335 | case -NFS4ERR_DELAY: | |
2c643488 | 336 | case -EKEYEXPIRED: |
65de872e TM |
337 | ret = nfs4_delay(server->client, &exception->timeout); |
338 | if (ret != 0) | |
339 | break; | |
a8a4ae3a | 340 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
341 | case -NFS4ERR_OLD_STATEID: |
342 | exception->retry = 1; | |
b064eca2 TM |
343 | break; |
344 | case -NFS4ERR_BADOWNER: | |
345 | /* The following works around a Linux server bug! */ | |
346 | case -NFS4ERR_BADNAME: | |
347 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
348 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
349 | exception->retry = 1; | |
350 | printk(KERN_WARNING "NFS: v4 server %s " | |
351 | "does not accept raw " | |
352 | "uid/gids. " | |
353 | "Reenabling the idmapper.\n", | |
354 | server->nfs_client->cl_hostname); | |
355 | } | |
65de872e TM |
356 | } |
357 | /* We failed to handle the error */ | |
358 | return nfs4_map_errors(ret); | |
0400a6b0 | 359 | wait_on_recovery: |
a2c0b9e2 TM |
360 | ret = nfs4_wait_clnt_recover(clp); |
361 | if (ret == 0) | |
362 | exception->retry = 1; | |
363 | return ret; | |
65de872e TM |
364 | } |
365 | ||
366 | ||
452e9352 | 367 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 368 | { |
1da177e4 LT |
369 | spin_lock(&clp->cl_lock); |
370 | if (time_before(clp->cl_last_renewal,timestamp)) | |
371 | clp->cl_last_renewal = timestamp; | |
372 | spin_unlock(&clp->cl_lock); | |
373 | } | |
374 | ||
452e9352 TM |
375 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
376 | { | |
377 | do_renew_lease(server->nfs_client, timestamp); | |
378 | } | |
379 | ||
cccef3b9 AA |
380 | #if defined(CONFIG_NFS_V4_1) |
381 | ||
d185a334 | 382 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 | 383 | { |
e3725ec0 | 384 | struct nfs4_session *session; |
13615871 | 385 | struct nfs4_slot_table *tbl; |
c10e4498 | 386 | bool send_new_highest_used_slotid = false; |
13615871 | 387 | |
dfb4f309 | 388 | if (!res->sr_slot) { |
13615871 AA |
389 | /* just wake up the next guy waiting since |
390 | * we may have not consumed a slot after all */ | |
691daf3b | 391 | dprintk("%s: No slot\n", __func__); |
35dc1d74 | 392 | return; |
13615871 | 393 | } |
e3725ec0 TM |
394 | tbl = res->sr_slot->table; |
395 | session = tbl->session; | |
ea028ac9 | 396 | |
35dc1d74 | 397 | spin_lock(&tbl->slot_tbl_lock); |
c10e4498 TM |
398 | /* Be nice to the server: try to ensure that the last transmitted |
399 | * value for highest_user_slotid <= target_highest_slotid | |
400 | */ | |
401 | if (tbl->highest_used_slotid > tbl->target_highest_slotid) | |
402 | send_new_highest_used_slotid = true; | |
403 | ||
f4af6e2a | 404 | nfs4_free_slot(tbl, res->sr_slot); |
c10e4498 TM |
405 | |
406 | if (tbl->highest_used_slotid != NFS4_NO_SLOT) | |
407 | send_new_highest_used_slotid = false; | |
408 | if (!nfs4_session_draining(session)) { | |
275e7e20 | 409 | if (rpc_wake_up_next(&tbl->slot_tbl_waitq) != NULL) |
c10e4498 TM |
410 | send_new_highest_used_slotid = false; |
411 | } | |
35dc1d74 | 412 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 413 | res->sr_slot = NULL; |
c10e4498 TM |
414 | if (send_new_highest_used_slotid) |
415 | nfs41_server_notify_highest_slotid_update(session->clp); | |
13615871 AA |
416 | } |
417 | ||
14516c3a | 418 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c | 419 | { |
e3725ec0 | 420 | struct nfs4_session *session; |
933602e3 | 421 | struct nfs4_slot *slot; |
b0df806c | 422 | unsigned long timestamp; |
14516c3a | 423 | struct nfs_client *clp; |
b0df806c AA |
424 | |
425 | /* | |
426 | * sr_status remains 1 if an RPC level error occurred. The server | |
427 | * may or may not have processed the sequence operation.. | |
428 | * Proceed as if the server received and processed the sequence | |
429 | * operation. | |
430 | */ | |
431 | if (res->sr_status == 1) | |
432 | res->sr_status = NFS_OK; | |
433 | ||
468f8613 BS |
434 | /* don't increment the sequence number if the task wasn't sent */ |
435 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
436 | goto out; |
437 | ||
933602e3 | 438 | slot = res->sr_slot; |
e3725ec0 | 439 | session = slot->table->session; |
933602e3 | 440 | |
691daf3b | 441 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
442 | switch (res->sr_status) { |
443 | case 0: | |
b0df806c | 444 | /* Update the slot's sequence and clientid lease timer */ |
933602e3 TM |
445 | ++slot->seq_nr; |
446 | timestamp = slot->renewal_time; | |
e3725ec0 | 447 | clp = session->clp; |
452e9352 | 448 | do_renew_lease(clp, timestamp); |
0629e370 | 449 | /* Check sequence flags */ |
b4410c2f TM |
450 | if (res->sr_status_flags != 0) |
451 | nfs4_schedule_lease_recovery(clp); | |
464ee9f9 | 452 | nfs41_update_target_slotid(slot->table, slot, res); |
14516c3a TM |
453 | break; |
454 | case -NFS4ERR_DELAY: | |
455 | /* The server detected a resend of the RPC call and | |
456 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
457 | * of RFC5661. | |
458 | */ | |
df2fabff | 459 | dprintk("%s: slot=%u seq=%u: Operation in progress\n", |
dfb4f309 | 460 | __func__, |
df2fabff | 461 | slot->slot_nr, |
933602e3 | 462 | slot->seq_nr); |
14516c3a TM |
463 | goto out_retry; |
464 | default: | |
465 | /* Just update the slot sequence no. */ | |
933602e3 | 466 | ++slot->seq_nr; |
b0df806c AA |
467 | } |
468 | out: | |
469 | /* The session may be reset by one of the error handlers. */ | |
470 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 471 | nfs41_sequence_free_slot(res); |
14516c3a TM |
472 | return 1; |
473 | out_retry: | |
d05dd4e9 | 474 | if (!rpc_restart_call(task)) |
14516c3a TM |
475 | goto out; |
476 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
477 | return 0; | |
b0df806c AA |
478 | } |
479 | ||
14516c3a TM |
480 | static int nfs4_sequence_done(struct rpc_task *task, |
481 | struct nfs4_sequence_res *res) | |
df896455 | 482 | { |
e3725ec0 | 483 | if (res->sr_slot == NULL) |
14516c3a TM |
484 | return 1; |
485 | return nfs41_sequence_done(task, res); | |
df896455 TM |
486 | } |
487 | ||
9d12b216 TM |
488 | static void nfs41_init_sequence(struct nfs4_sequence_args *args, |
489 | struct nfs4_sequence_res *res, int cache_reply) | |
490 | { | |
2b2fa717 | 491 | args->sa_slot = NULL; |
9d12b216 | 492 | args->sa_cache_this = 0; |
8fe72bac | 493 | args->sa_privileged = 0; |
9d12b216 TM |
494 | if (cache_reply) |
495 | args->sa_cache_this = 1; | |
9d12b216 TM |
496 | res->sr_slot = NULL; |
497 | } | |
498 | ||
8fe72bac TM |
499 | static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args) |
500 | { | |
501 | args->sa_privileged = 1; | |
502 | } | |
503 | ||
dc70d7b3 | 504 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
505 | struct nfs4_sequence_args *args, |
506 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
507 | struct rpc_task *task) |
508 | { | |
fbcd4abc AA |
509 | struct nfs4_slot *slot; |
510 | struct nfs4_slot_table *tbl; | |
fbcd4abc AA |
511 | |
512 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 513 | /* slot already allocated? */ |
dfb4f309 | 514 | if (res->sr_slot != NULL) |
d9afbd1b | 515 | goto out_success; |
ce5039c1 | 516 | |
fbcd4abc AA |
517 | tbl = &session->fc_slot_table; |
518 | ||
69d206b5 TM |
519 | task->tk_timeout = 0; |
520 | ||
fbcd4abc | 521 | spin_lock(&tbl->slot_tbl_lock); |
a2118c33 | 522 | if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) && |
8fe72bac | 523 | !args->sa_privileged) { |
0b1c8fc4 | 524 | /* The state manager will wait until the slot table is empty */ |
0b1c8fc4 | 525 | dprintk("%s session is draining\n", __func__); |
7b939a3f | 526 | goto out_sleep; |
689cf5c1 AB |
527 | } |
528 | ||
2dc03b7f | 529 | slot = nfs4_alloc_slot(tbl); |
69d206b5 TM |
530 | if (IS_ERR(slot)) { |
531 | /* If out of memory, try again in 1/4 second */ | |
532 | if (slot == ERR_PTR(-ENOMEM)) | |
533 | task->tk_timeout = HZ >> 2; | |
fbcd4abc | 534 | dprintk("<-- %s: no free slots\n", __func__); |
7b939a3f | 535 | goto out_sleep; |
fbcd4abc AA |
536 | } |
537 | spin_unlock(&tbl->slot_tbl_lock); | |
538 | ||
689cf5c1 | 539 | rpc_task_set_priority(task, RPC_PRIORITY_NORMAL); |
2b2fa717 TM |
540 | |
541 | args->sa_slot = slot; | |
fbcd4abc | 542 | |
2dc03b7f TM |
543 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, |
544 | slot->slot_nr, slot->seq_nr); | |
fbcd4abc | 545 | |
dfb4f309 | 546 | res->sr_slot = slot; |
2a6e26cd | 547 | res->sr_status_flags = 0; |
fbcd4abc AA |
548 | /* |
549 | * sr_status is only set in decode_sequence, and so will remain | |
550 | * set to 1 if an rpc level failure occurs. | |
551 | */ | |
552 | res->sr_status = 1; | |
d9afbd1b TM |
553 | out_success: |
554 | rpc_call_start(task); | |
ce5039c1 | 555 | return 0; |
7b939a3f | 556 | out_sleep: |
8fe72bac TM |
557 | /* Privileged tasks are queued with top priority */ |
558 | if (args->sa_privileged) | |
559 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
7b939a3f TM |
560 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
561 | spin_unlock(&tbl->slot_tbl_lock); | |
562 | return -EAGAIN; | |
ce5039c1 | 563 | } |
dc70d7b3 | 564 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 565 | |
035168ab | 566 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
567 | struct nfs4_sequence_args *args, |
568 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
569 | struct rpc_task *task) |
570 | { | |
035168ab | 571 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
572 | int ret = 0; |
573 | ||
d9afbd1b TM |
574 | if (session == NULL) { |
575 | rpc_call_start(task); | |
035168ab | 576 | goto out; |
d9afbd1b | 577 | } |
035168ab | 578 | |
df2fabff | 579 | dprintk("--> %s clp %p session %p sr_slot %d\n", |
dfb4f309 | 580 | __func__, session->clp, session, res->sr_slot ? |
df2fabff | 581 | res->sr_slot->slot_nr : -1); |
ce5039c1 | 582 | |
9d12b216 | 583 | ret = nfs41_setup_sequence(session, args, res, task); |
ce5039c1 AA |
584 | out: |
585 | dprintk("<-- %s status=%d\n", __func__, ret); | |
586 | return ret; | |
587 | } | |
588 | ||
589 | struct nfs41_call_sync_data { | |
035168ab | 590 | const struct nfs_server *seq_server; |
ce5039c1 AA |
591 | struct nfs4_sequence_args *seq_args; |
592 | struct nfs4_sequence_res *seq_res; | |
ce5039c1 AA |
593 | }; |
594 | ||
595 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
596 | { | |
597 | struct nfs41_call_sync_data *data = calldata; | |
6ba7db34 | 598 | struct nfs4_session *session = nfs4_get_session(data->seq_server); |
ce5039c1 | 599 | |
035168ab TM |
600 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
601 | ||
d9afbd1b | 602 | nfs41_setup_sequence(session, data->seq_args, data->seq_res, task); |
ce5039c1 AA |
603 | } |
604 | ||
69ab40c4 AA |
605 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
606 | { | |
607 | struct nfs41_call_sync_data *data = calldata; | |
608 | ||
14516c3a | 609 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
610 | } |
611 | ||
17280175 | 612 | static const struct rpc_call_ops nfs41_call_sync_ops = { |
ce5039c1 | 613 | .rpc_call_prepare = nfs41_call_sync_prepare, |
69ab40c4 | 614 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
615 | }; |
616 | ||
7c513058 BS |
617 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
618 | struct nfs_server *server, | |
ce5039c1 AA |
619 | struct rpc_message *msg, |
620 | struct nfs4_sequence_args *args, | |
8fe72bac | 621 | struct nfs4_sequence_res *res) |
ce5039c1 AA |
622 | { |
623 | int ret; | |
624 | struct rpc_task *task; | |
625 | struct nfs41_call_sync_data data = { | |
035168ab | 626 | .seq_server = server, |
ce5039c1 AA |
627 | .seq_args = args, |
628 | .seq_res = res, | |
ce5039c1 AA |
629 | }; |
630 | struct rpc_task_setup task_setup = { | |
7c513058 | 631 | .rpc_client = clnt, |
ce5039c1 AA |
632 | .rpc_message = msg, |
633 | .callback_ops = &nfs41_call_sync_ops, | |
634 | .callback_data = &data | |
635 | }; | |
636 | ||
ce5039c1 AA |
637 | task = rpc_run_task(&task_setup); |
638 | if (IS_ERR(task)) | |
639 | ret = PTR_ERR(task); | |
640 | else { | |
641 | ret = task->tk_status; | |
642 | rpc_put_task(task); | |
643 | } | |
644 | return ret; | |
645 | } | |
646 | ||
df896455 | 647 | #else |
8fe72bac | 648 | static |
9d12b216 TM |
649 | void nfs41_init_sequence(struct nfs4_sequence_args *args, |
650 | struct nfs4_sequence_res *res, int cache_reply) | |
651 | { | |
652 | } | |
653 | ||
8fe72bac TM |
654 | static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args) |
655 | { | |
656 | } | |
657 | ||
658 | ||
14516c3a TM |
659 | static int nfs4_sequence_done(struct rpc_task *task, |
660 | struct nfs4_sequence_res *res) | |
df896455 | 661 | { |
14516c3a | 662 | return 1; |
df896455 | 663 | } |
cccef3b9 AA |
664 | #endif /* CONFIG_NFS_V4_1 */ |
665 | ||
fd0c0953 | 666 | static |
7c513058 BS |
667 | int _nfs4_call_sync(struct rpc_clnt *clnt, |
668 | struct nfs_server *server, | |
cccef3b9 AA |
669 | struct rpc_message *msg, |
670 | struct nfs4_sequence_args *args, | |
fd0c0953 | 671 | struct nfs4_sequence_res *res) |
cccef3b9 | 672 | { |
7c513058 | 673 | return rpc_call_sync(clnt, msg, 0); |
cccef3b9 AA |
674 | } |
675 | ||
fd0c0953 | 676 | static |
7c513058 BS |
677 | int nfs4_call_sync(struct rpc_clnt *clnt, |
678 | struct nfs_server *server, | |
e73b83f2 BS |
679 | struct rpc_message *msg, |
680 | struct nfs4_sequence_args *args, | |
681 | struct nfs4_sequence_res *res, | |
682 | int cache_reply) | |
683 | { | |
fd0c0953 | 684 | nfs41_init_sequence(args, res, cache_reply); |
7c513058 | 685 | return server->nfs_client->cl_mvops->call_sync(clnt, server, msg, |
fd0c0953 | 686 | args, res); |
e73b83f2 | 687 | } |
cccef3b9 | 688 | |
38478b24 | 689 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 690 | { |
38478b24 | 691 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 692 | |
38478b24 | 693 | spin_lock(&dir->i_lock); |
359d7d1c | 694 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA; |
a9a4a87a | 695 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 696 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 697 | dir->i_version = cinfo->after; |
38478b24 | 698 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
699 | } |
700 | ||
e56e0b78 | 701 | struct nfs4_opendata { |
c6d00e63 | 702 | struct kref kref; |
e56e0b78 TM |
703 | struct nfs_openargs o_arg; |
704 | struct nfs_openres o_res; | |
cdd4e68b TM |
705 | struct nfs_open_confirmargs c_arg; |
706 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
707 | struct nfs4_string owner_name; |
708 | struct nfs4_string group_name; | |
e56e0b78 | 709 | struct nfs_fattr f_attr; |
e56e0b78 | 710 | struct dentry *dir; |
82a2c1b7 | 711 | struct dentry *dentry; |
e56e0b78 | 712 | struct nfs4_state_owner *owner; |
aac00a8d | 713 | struct nfs4_state *state; |
e56e0b78 | 714 | struct iattr attrs; |
26e976a8 | 715 | unsigned long timestamp; |
3e309914 | 716 | unsigned int rpc_done : 1; |
24ac23ab TM |
717 | int rpc_status; |
718 | int cancelled; | |
e56e0b78 TM |
719 | }; |
720 | ||
2ced46c2 TM |
721 | |
722 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
723 | { | |
724 | p->o_res.f_attr = &p->f_attr; | |
c1d51931 TM |
725 | p->o_res.seqid = p->o_arg.seqid; |
726 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 | 727 | p->o_res.server = p->o_arg.server; |
5f657530 | 728 | p->o_res.access_request = p->o_arg.access; |
2ced46c2 | 729 | nfs_fattr_init(&p->f_attr); |
6926afd1 | 730 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
731 | } |
732 | ||
82a2c1b7 | 733 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 734 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be TM |
735 | const struct iattr *attrs, |
736 | gfp_t gfp_mask) | |
e56e0b78 | 737 | { |
82a2c1b7 | 738 | struct dentry *parent = dget_parent(dentry); |
e56e0b78 TM |
739 | struct inode *dir = parent->d_inode; |
740 | struct nfs_server *server = NFS_SERVER(dir); | |
741 | struct nfs4_opendata *p; | |
742 | ||
8535b2be | 743 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
744 | if (p == NULL) |
745 | goto err; | |
8535b2be | 746 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 TM |
747 | if (p->o_arg.seqid == NULL) |
748 | goto err_free; | |
82a2c1b7 AV |
749 | nfs_sb_active(dentry->d_sb); |
750 | p->dentry = dget(dentry); | |
e56e0b78 TM |
751 | p->dir = parent; |
752 | p->owner = sp; | |
753 | atomic_inc(&sp->so_count); | |
754 | p->o_arg.fh = NFS_FH(dir); | |
dc0b027d TM |
755 | p->o_arg.open_flags = flags; |
756 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
ae2bb032 WAA |
757 | /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS |
758 | * will return permission denied for all bits until close */ | |
759 | if (!(flags & O_EXCL)) { | |
760 | /* ask server to check for all possible rights as results | |
761 | * are cached */ | |
762 | p->o_arg.access = NFS4_ACCESS_READ | NFS4_ACCESS_MODIFY | | |
763 | NFS4_ACCESS_EXTEND | NFS4_ACCESS_EXECUTE; | |
ae2bb032 | 764 | } |
7539bbab | 765 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
95b72eb0 TM |
766 | p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time); |
767 | p->o_arg.id.uniquifier = sp->so_seqid.owner_id; | |
82a2c1b7 | 768 | p->o_arg.name = &dentry->d_name; |
e56e0b78 TM |
769 | p->o_arg.server = server; |
770 | p->o_arg.bitmask = server->attr_bitmask; | |
1549210f | 771 | p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0]; |
e56e0b78 | 772 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; |
536e43d1 | 773 | if (attrs != NULL && attrs->ia_valid != 0) { |
cd93710e | 774 | __be32 verf[2]; |
d77d76ff | 775 | |
e56e0b78 TM |
776 | p->o_arg.u.attrs = &p->attrs; |
777 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
cd93710e CL |
778 | |
779 | verf[0] = jiffies; | |
780 | verf[1] = current->pid; | |
781 | memcpy(p->o_arg.u.verifier.data, verf, | |
782 | sizeof(p->o_arg.u.verifier.data)); | |
e56e0b78 | 783 | } |
cdd4e68b TM |
784 | p->c_arg.fh = &p->o_res.fh; |
785 | p->c_arg.stateid = &p->o_res.stateid; | |
786 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 787 | nfs4_init_opendata_res(p); |
c6d00e63 | 788 | kref_init(&p->kref); |
e56e0b78 TM |
789 | return p; |
790 | err_free: | |
791 | kfree(p); | |
792 | err: | |
793 | dput(parent); | |
794 | return NULL; | |
795 | } | |
796 | ||
c6d00e63 | 797 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 798 | { |
c6d00e63 TM |
799 | struct nfs4_opendata *p = container_of(kref, |
800 | struct nfs4_opendata, kref); | |
82a2c1b7 | 801 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
802 | |
803 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
804 | if (p->state != NULL) |
805 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
806 | nfs4_put_state_owner(p->owner); |
807 | dput(p->dir); | |
82a2c1b7 AV |
808 | dput(p->dentry); |
809 | nfs_sb_deactive(sb); | |
6926afd1 | 810 | nfs_fattr_free_names(&p->f_attr); |
c6d00e63 TM |
811 | kfree(p); |
812 | } | |
813 | ||
814 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
815 | { | |
816 | if (p != NULL) | |
817 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
818 | } |
819 | ||
06f814a3 TM |
820 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
821 | { | |
06f814a3 TM |
822 | int ret; |
823 | ||
06f814a3 | 824 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
825 | return ret; |
826 | } | |
827 | ||
dc0b027d | 828 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
829 | { |
830 | int ret = 0; | |
dc0b027d | 831 | |
536e43d1 | 832 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
833 | goto out; |
834 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 835 | case FMODE_READ: |
88069f77 TM |
836 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
837 | && state->n_rdonly != 0; | |
6ee41268 TM |
838 | break; |
839 | case FMODE_WRITE: | |
88069f77 TM |
840 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
841 | && state->n_wronly != 0; | |
6ee41268 TM |
842 | break; |
843 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
844 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
845 | && state->n_rdwr != 0; | |
6ee41268 | 846 | } |
dc0b027d | 847 | out: |
6ee41268 TM |
848 | return ret; |
849 | } | |
850 | ||
dc0b027d | 851 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 852 | { |
652f89f6 TM |
853 | if (delegation == NULL) |
854 | return 0; | |
dc0b027d | 855 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 856 | return 0; |
15c831bf | 857 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 858 | return 0; |
b7391f44 | 859 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
860 | return 1; |
861 | } | |
862 | ||
dc0b027d | 863 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 864 | { |
dc0b027d | 865 | switch (fmode) { |
e7616923 TM |
866 | case FMODE_WRITE: |
867 | state->n_wronly++; | |
868 | break; | |
869 | case FMODE_READ: | |
870 | state->n_rdonly++; | |
871 | break; | |
872 | case FMODE_READ|FMODE_WRITE: | |
873 | state->n_rdwr++; | |
874 | } | |
dc0b027d | 875 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
876 | } |
877 | ||
dc0b027d | 878 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
879 | { |
880 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
f597c537 TM |
881 | nfs4_stateid_copy(&state->stateid, stateid); |
882 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
dc0b027d | 883 | switch (fmode) { |
003707c7 TM |
884 | case FMODE_READ: |
885 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
886 | break; | |
887 | case FMODE_WRITE: | |
888 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
889 | break; | |
890 | case FMODE_READ|FMODE_WRITE: | |
891 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
892 | } | |
e7616923 TM |
893 | } |
894 | ||
dc0b027d | 895 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 896 | { |
8bda4e4c | 897 | write_seqlock(&state->seqlock); |
dc0b027d | 898 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 899 | write_sequnlock(&state->seqlock); |
003707c7 TM |
900 | } |
901 | ||
dc0b027d | 902 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 903 | { |
8bda4e4c TM |
904 | /* |
905 | * Protect the call to nfs4_state_set_mode_locked and | |
906 | * serialise the stateid update | |
907 | */ | |
908 | write_seqlock(&state->seqlock); | |
003707c7 | 909 | if (deleg_stateid != NULL) { |
f597c537 | 910 | nfs4_stateid_copy(&state->stateid, deleg_stateid); |
003707c7 TM |
911 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
912 | } | |
913 | if (open_stateid != NULL) | |
dc0b027d | 914 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
915 | write_sequnlock(&state->seqlock); |
916 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 917 | update_open_stateflags(state, fmode); |
ec073428 | 918 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
919 | } |
920 | ||
dc0b027d | 921 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
922 | { |
923 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
924 | struct nfs_delegation *deleg_cur; | |
925 | int ret = 0; | |
926 | ||
dc0b027d | 927 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
928 | |
929 | rcu_read_lock(); | |
930 | deleg_cur = rcu_dereference(nfsi->delegation); | |
931 | if (deleg_cur == NULL) | |
932 | goto no_delegation; | |
933 | ||
934 | spin_lock(&deleg_cur->lock); | |
935 | if (nfsi->delegation != deleg_cur || | |
dc0b027d | 936 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
937 | goto no_delegation_unlock; |
938 | ||
939 | if (delegation == NULL) | |
940 | delegation = &deleg_cur->stateid; | |
f597c537 | 941 | else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) |
34310430 TM |
942 | goto no_delegation_unlock; |
943 | ||
b7391f44 | 944 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 945 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
946 | ret = 1; |
947 | no_delegation_unlock: | |
948 | spin_unlock(&deleg_cur->lock); | |
949 | no_delegation: | |
950 | rcu_read_unlock(); | |
951 | ||
952 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 953 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
954 | ret = 1; |
955 | } | |
956 | ||
957 | return ret; | |
958 | } | |
959 | ||
960 | ||
dc0b027d | 961 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
962 | { |
963 | struct nfs_delegation *delegation; | |
964 | ||
965 | rcu_read_lock(); | |
966 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 967 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
968 | rcu_read_unlock(); |
969 | return; | |
970 | } | |
971 | rcu_read_unlock(); | |
57ec14c5 | 972 | nfs4_inode_return_delegation(inode); |
aac00a8d TM |
973 | } |
974 | ||
6ee41268 | 975 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
976 | { |
977 | struct nfs4_state *state = opendata->state; | |
978 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
979 | struct nfs_delegation *delegation; | |
536e43d1 | 980 | int open_mode = opendata->o_arg.open_flags & (O_EXCL|O_TRUNC); |
dc0b027d | 981 | fmode_t fmode = opendata->o_arg.fmode; |
aac00a8d TM |
982 | nfs4_stateid stateid; |
983 | int ret = -EAGAIN; | |
984 | ||
aac00a8d | 985 | for (;;) { |
dc0b027d | 986 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 987 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
988 | if (can_open_cached(state, fmode, open_mode)) { |
989 | update_open_stateflags(state, fmode); | |
6ee41268 | 990 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
991 | goto out_return_state; |
992 | } | |
993 | spin_unlock(&state->owner->so_lock); | |
994 | } | |
34310430 TM |
995 | rcu_read_lock(); |
996 | delegation = rcu_dereference(nfsi->delegation); | |
652f89f6 | 997 | if (!can_open_delegated(delegation, fmode)) { |
34310430 | 998 | rcu_read_unlock(); |
aac00a8d | 999 | break; |
34310430 | 1000 | } |
aac00a8d | 1001 | /* Save the delegation */ |
f597c537 | 1002 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1003 | rcu_read_unlock(); |
af22f94a | 1004 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
1005 | if (ret != 0) |
1006 | goto out; | |
1007 | ret = -EAGAIN; | |
34310430 TM |
1008 | |
1009 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1010 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1011 | goto out_return_state; |
aac00a8d | 1012 | } |
aac00a8d TM |
1013 | out: |
1014 | return ERR_PTR(ret); | |
1015 | out_return_state: | |
1016 | atomic_inc(&state->count); | |
1017 | return state; | |
1018 | } | |
1019 | ||
e23008ec AA |
1020 | static void |
1021 | nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state) | |
1022 | { | |
1023 | struct nfs_client *clp = NFS_SERVER(state->inode)->nfs_client; | |
1024 | struct nfs_delegation *delegation; | |
1025 | int delegation_flags = 0; | |
1026 | ||
1027 | rcu_read_lock(); | |
1028 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
1029 | if (delegation) | |
1030 | delegation_flags = delegation->flags; | |
1031 | rcu_read_unlock(); | |
1032 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) { | |
1033 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " | |
1034 | "returning a delegation for " | |
1035 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
1036 | clp->cl_hostname); | |
1037 | } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) | |
1038 | nfs_inode_set_delegation(state->inode, | |
1039 | data->owner->so_cred, | |
1040 | &data->o_res); | |
1041 | else | |
1042 | nfs_inode_reclaim_delegation(state->inode, | |
1043 | data->owner->so_cred, | |
1044 | &data->o_res); | |
1045 | } | |
1046 | ||
1047 | /* | |
1048 | * Check the inode attributes against the CLAIM_PREVIOUS returned attributes | |
1049 | * and update the nfs4_state. | |
1050 | */ | |
1051 | static struct nfs4_state * | |
1052 | _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data) | |
1053 | { | |
1054 | struct inode *inode = data->state->inode; | |
1055 | struct nfs4_state *state = data->state; | |
1056 | int ret; | |
1057 | ||
1058 | if (!data->rpc_done) { | |
1059 | ret = data->rpc_status; | |
1060 | goto err; | |
1061 | } | |
1062 | ||
1063 | ret = -ESTALE; | |
1064 | if (!(data->f_attr.valid & NFS_ATTR_FATTR_TYPE) || | |
1065 | !(data->f_attr.valid & NFS_ATTR_FATTR_FILEID) || | |
1066 | !(data->f_attr.valid & NFS_ATTR_FATTR_CHANGE)) | |
1067 | goto err; | |
1068 | ||
1069 | ret = -ENOMEM; | |
1070 | state = nfs4_get_open_state(inode, data->owner); | |
1071 | if (state == NULL) | |
1072 | goto err; | |
1073 | ||
1074 | ret = nfs_refresh_inode(inode, &data->f_attr); | |
1075 | if (ret) | |
1076 | goto err; | |
1077 | ||
1078 | if (data->o_res.delegation_type != 0) | |
1079 | nfs4_opendata_check_deleg(data, state); | |
1080 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
1081 | data->o_arg.fmode); | |
1082 | ||
1083 | return state; | |
1084 | err: | |
1085 | return ERR_PTR(ret); | |
1086 | ||
1087 | } | |
1088 | ||
1089 | static struct nfs4_state * | |
1090 | _nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
24ac23ab TM |
1091 | { |
1092 | struct inode *inode; | |
1093 | struct nfs4_state *state = NULL; | |
1b370bc2 | 1094 | int ret; |
24ac23ab | 1095 | |
aac00a8d | 1096 | if (!data->rpc_done) { |
6ee41268 | 1097 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1098 | goto out; |
1099 | } | |
1100 | ||
1b370bc2 | 1101 | ret = -EAGAIN; |
24ac23ab | 1102 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1103 | goto err; |
24ac23ab | 1104 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 1105 | ret = PTR_ERR(inode); |
03f28e3a | 1106 | if (IS_ERR(inode)) |
1b370bc2 TM |
1107 | goto err; |
1108 | ret = -ENOMEM; | |
24ac23ab TM |
1109 | state = nfs4_get_open_state(inode, data->owner); |
1110 | if (state == NULL) | |
1b370bc2 | 1111 | goto err_put_inode; |
e23008ec AA |
1112 | if (data->o_res.delegation_type != 0) |
1113 | nfs4_opendata_check_deleg(data, state); | |
34310430 | 1114 | update_open_stateid(state, &data->o_res.stateid, NULL, |
dc0b027d | 1115 | data->o_arg.fmode); |
24ac23ab | 1116 | iput(inode); |
aac00a8d | 1117 | out: |
24ac23ab | 1118 | return state; |
1b370bc2 TM |
1119 | err_put_inode: |
1120 | iput(inode); | |
1121 | err: | |
1122 | return ERR_PTR(ret); | |
24ac23ab TM |
1123 | } |
1124 | ||
e23008ec AA |
1125 | static struct nfs4_state * |
1126 | nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
1127 | { | |
1128 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) | |
1129 | return _nfs4_opendata_reclaim_to_nfs4_state(data); | |
1130 | return _nfs4_opendata_to_nfs4_state(data); | |
1131 | } | |
1132 | ||
864472e9 TM |
1133 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1134 | { | |
1135 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1136 | struct nfs_open_context *ctx; | |
1137 | ||
1138 | spin_lock(&state->inode->i_lock); | |
1139 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1140 | if (ctx->state != state) | |
1141 | continue; | |
1142 | get_nfs_open_context(ctx); | |
1143 | spin_unlock(&state->inode->i_lock); | |
1144 | return ctx; | |
1145 | } | |
1146 | spin_unlock(&state->inode->i_lock); | |
1147 | return ERR_PTR(-ENOENT); | |
1148 | } | |
1149 | ||
6f220ed5 TM |
1150 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
1151 | { | |
1152 | struct nfs4_opendata *opendata; | |
1153 | ||
3d4ff43d | 1154 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, NULL, GFP_NOFS); |
6f220ed5 TM |
1155 | if (opendata == NULL) |
1156 | return ERR_PTR(-ENOMEM); | |
1157 | opendata->state = state; | |
1158 | atomic_inc(&state->count); | |
1159 | return opendata; | |
1160 | } | |
1161 | ||
dc0b027d | 1162 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1163 | { |
2ced46c2 | 1164 | struct nfs4_state *newstate; |
864472e9 TM |
1165 | int ret; |
1166 | ||
dc0b027d TM |
1167 | opendata->o_arg.open_flags = 0; |
1168 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1169 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1170 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1171 | nfs4_init_opendata_res(opendata); | |
b257957e | 1172 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1173 | if (ret != 0) |
1174 | return ret; | |
2ced46c2 | 1175 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1176 | if (IS_ERR(newstate)) |
1177 | return PTR_ERR(newstate); | |
643168c2 | 1178 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1179 | *res = newstate; |
864472e9 TM |
1180 | return 0; |
1181 | } | |
1182 | ||
1183 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1184 | { | |
864472e9 | 1185 | struct nfs4_state *newstate; |
864472e9 TM |
1186 | int ret; |
1187 | ||
1188 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1189 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
1190 | smp_rmb(); |
1191 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1192 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1193 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1194 | if (ret != 0) |
1195 | return ret; | |
2ced46c2 TM |
1196 | if (newstate != state) |
1197 | return -ESTALE; | |
864472e9 TM |
1198 | } |
1199 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1200 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1201 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1202 | if (ret != 0) |
1203 | return ret; | |
2ced46c2 TM |
1204 | if (newstate != state) |
1205 | return -ESTALE; | |
864472e9 TM |
1206 | } |
1207 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1208 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1209 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1210 | if (ret != 0) |
1211 | return ret; | |
2ced46c2 TM |
1212 | if (newstate != state) |
1213 | return -ESTALE; | |
864472e9 | 1214 | } |
1ac7e2fd TM |
1215 | /* |
1216 | * We may have performed cached opens for all three recoveries. | |
1217 | * Check if we need to update the current stateid. | |
1218 | */ | |
1219 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 1220 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 1221 | write_seqlock(&state->seqlock); |
1ac7e2fd | 1222 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 1223 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 1224 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1225 | } |
864472e9 TM |
1226 | return 0; |
1227 | } | |
1228 | ||
1da177e4 LT |
1229 | /* |
1230 | * OPEN_RECLAIM: | |
1231 | * reclaim state on the server after a reboot. | |
1da177e4 | 1232 | */ |
539cd03a | 1233 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1234 | { |
1ac7e2fd | 1235 | struct nfs_delegation *delegation; |
864472e9 | 1236 | struct nfs4_opendata *opendata; |
dc0b027d | 1237 | fmode_t delegation_type = 0; |
1da177e4 LT |
1238 | int status; |
1239 | ||
6f220ed5 TM |
1240 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1241 | if (IS_ERR(opendata)) | |
1242 | return PTR_ERR(opendata); | |
864472e9 TM |
1243 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
1244 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
1245 | rcu_read_lock(); |
1246 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1247 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1248 | delegation_type = delegation->type; |
1ac7e2fd | 1249 | rcu_read_unlock(); |
864472e9 TM |
1250 | opendata->o_arg.u.delegation_type = delegation_type; |
1251 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1252 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1253 | return status; |
1254 | } | |
1255 | ||
539cd03a | 1256 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1257 | { |
1258 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1259 | struct nfs4_exception exception = { }; | |
1260 | int err; | |
1261 | do { | |
539cd03a | 1262 | err = _nfs4_do_open_reclaim(ctx, state); |
168667c4 | 1263 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1264 | break; |
1265 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1266 | } while (exception.retry); |
1267 | return err; | |
1268 | } | |
1269 | ||
864472e9 TM |
1270 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1271 | { | |
1272 | struct nfs_open_context *ctx; | |
1273 | int ret; | |
1274 | ||
1275 | ctx = nfs4_state_find_open_context(state); | |
1276 | if (IS_ERR(ctx)) | |
1277 | return PTR_ERR(ctx); | |
539cd03a | 1278 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1279 | put_nfs_open_context(ctx); |
1280 | return ret; | |
1281 | } | |
1282 | ||
13437e12 | 1283 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 1284 | { |
e56e0b78 | 1285 | struct nfs4_opendata *opendata; |
864472e9 | 1286 | int ret; |
1da177e4 | 1287 | |
6f220ed5 TM |
1288 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1289 | if (IS_ERR(opendata)) | |
1290 | return PTR_ERR(opendata); | |
e56e0b78 | 1291 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
f597c537 | 1292 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); |
864472e9 | 1293 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 1294 | nfs4_opendata_put(opendata); |
864472e9 | 1295 | return ret; |
1da177e4 LT |
1296 | } |
1297 | ||
13437e12 | 1298 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
1299 | { |
1300 | struct nfs4_exception exception = { }; | |
539cd03a | 1301 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
1302 | int err; |
1303 | do { | |
13437e12 | 1304 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
1305 | switch (err) { |
1306 | case 0: | |
965b5d67 TM |
1307 | case -ENOENT: |
1308 | case -ESTALE: | |
1309 | goto out; | |
bcfa49f6 RL |
1310 | case -NFS4ERR_BADSESSION: |
1311 | case -NFS4ERR_BADSLOT: | |
1312 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1313 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1314 | case -NFS4ERR_DEADSESSION: | |
9f594791 | 1315 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); |
bcfa49f6 | 1316 | goto out; |
1da177e4 LT |
1317 | case -NFS4ERR_STALE_CLIENTID: |
1318 | case -NFS4ERR_STALE_STATEID: | |
1319 | case -NFS4ERR_EXPIRED: | |
1320 | /* Don't recall a delegation if it was lost */ | |
0400a6b0 | 1321 | nfs4_schedule_lease_recovery(server->nfs_client); |
965b5d67 TM |
1322 | goto out; |
1323 | case -ERESTARTSYS: | |
1324 | /* | |
1325 | * The show must go on: exit, but mark the | |
1326 | * stateid as needing recovery. | |
1327 | */ | |
a1d0b5ee | 1328 | case -NFS4ERR_DELEG_REVOKED: |
965b5d67 TM |
1329 | case -NFS4ERR_ADMIN_REVOKED: |
1330 | case -NFS4ERR_BAD_STATEID: | |
a1d0b5ee TM |
1331 | nfs_inode_find_state_and_recover(state->inode, |
1332 | stateid); | |
0400a6b0 | 1333 | nfs4_schedule_stateid_recovery(server, state); |
168667c4 TM |
1334 | case -EKEYEXPIRED: |
1335 | /* | |
1336 | * User RPCSEC_GSS context has expired. | |
1337 | * We cannot recover this stateid now, so | |
1338 | * skip it and allow recovery thread to | |
1339 | * proceed. | |
1340 | */ | |
965b5d67 TM |
1341 | case -ENOMEM: |
1342 | err = 0; | |
1343 | goto out; | |
1da177e4 LT |
1344 | } |
1345 | err = nfs4_handle_exception(server, err, &exception); | |
1346 | } while (exception.retry); | |
965b5d67 | 1347 | out: |
1da177e4 LT |
1348 | return err; |
1349 | } | |
1350 | ||
cdd4e68b TM |
1351 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1352 | { | |
1353 | struct nfs4_opendata *data = calldata; | |
1354 | ||
1355 | data->rpc_status = task->tk_status; | |
26e976a8 | 1356 | if (data->rpc_status == 0) { |
f597c537 | 1357 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 1358 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1359 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1360 | data->rpc_done = 1; |
26e976a8 | 1361 | } |
cdd4e68b TM |
1362 | } |
1363 | ||
1364 | static void nfs4_open_confirm_release(void *calldata) | |
1365 | { | |
1366 | struct nfs4_opendata *data = calldata; | |
1367 | struct nfs4_state *state = NULL; | |
1368 | ||
1369 | /* If this request hasn't been cancelled, do nothing */ | |
1370 | if (data->cancelled == 0) | |
1371 | goto out_free; | |
1372 | /* In case of error, no cleanup! */ | |
3e309914 | 1373 | if (!data->rpc_done) |
cdd4e68b | 1374 | goto out_free; |
cdd4e68b | 1375 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1376 | if (!IS_ERR(state)) |
643168c2 | 1377 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1378 | out_free: |
c6d00e63 | 1379 | nfs4_opendata_put(data); |
cdd4e68b TM |
1380 | } |
1381 | ||
1382 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1383 | .rpc_call_done = nfs4_open_confirm_done, |
1384 | .rpc_release = nfs4_open_confirm_release, | |
1385 | }; | |
1386 | ||
1387 | /* | |
1388 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1389 | */ | |
1390 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1391 | { | |
1392 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1393 | struct rpc_task *task; | |
5138fde0 TM |
1394 | struct rpc_message msg = { |
1395 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1396 | .rpc_argp = &data->c_arg, | |
1397 | .rpc_resp = &data->c_res, | |
1398 | .rpc_cred = data->owner->so_cred, | |
1399 | }; | |
c970aa85 TM |
1400 | struct rpc_task_setup task_setup_data = { |
1401 | .rpc_client = server->client, | |
5138fde0 | 1402 | .rpc_message = &msg, |
c970aa85 TM |
1403 | .callback_ops = &nfs4_open_confirm_ops, |
1404 | .callback_data = data, | |
101070ca | 1405 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1406 | .flags = RPC_TASK_ASYNC, |
1407 | }; | |
1da177e4 LT |
1408 | int status; |
1409 | ||
c6d00e63 | 1410 | kref_get(&data->kref); |
3e309914 TM |
1411 | data->rpc_done = 0; |
1412 | data->rpc_status = 0; | |
5138fde0 | 1413 | data->timestamp = jiffies; |
c970aa85 | 1414 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1415 | if (IS_ERR(task)) |
cdd4e68b | 1416 | return PTR_ERR(task); |
cdd4e68b TM |
1417 | status = nfs4_wait_for_completion_rpc_task(task); |
1418 | if (status != 0) { | |
1419 | data->cancelled = 1; | |
1420 | smp_wmb(); | |
1421 | } else | |
1422 | status = data->rpc_status; | |
e6b3c4db | 1423 | rpc_put_task(task); |
1da177e4 LT |
1424 | return status; |
1425 | } | |
1426 | ||
24ac23ab | 1427 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1428 | { |
24ac23ab TM |
1429 | struct nfs4_opendata *data = calldata; |
1430 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 1431 | |
24ac23ab TM |
1432 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
1433 | return; | |
aac00a8d TM |
1434 | /* |
1435 | * Check if we still need to send an OPEN call, or if we can use | |
1436 | * a delegation instead. | |
1437 | */ | |
1438 | if (data->state != NULL) { | |
1439 | struct nfs_delegation *delegation; | |
1440 | ||
dc0b027d | 1441 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1442 | goto out_no_action; |
aac00a8d TM |
1443 | rcu_read_lock(); |
1444 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
652f89f6 TM |
1445 | if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR && |
1446 | can_open_delegated(delegation, data->o_arg.fmode)) | |
1447 | goto unlock_no_action; | |
aac00a8d TM |
1448 | rcu_read_unlock(); |
1449 | } | |
95b72eb0 | 1450 | /* Update client id. */ |
1f0e890d | 1451 | data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; |
6f220ed5 | 1452 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 1453 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
e23008ec | 1454 | data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0]; |
6f220ed5 TM |
1455 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1456 | } | |
26e976a8 | 1457 | data->timestamp = jiffies; |
035168ab | 1458 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 1459 | &data->o_arg.seq_args, |
2240a9e2 TM |
1460 | &data->o_res.seq_res, |
1461 | task) != 0) | |
1462 | nfs_release_seqid(data->o_arg.seqid); | |
6ee41268 | 1463 | return; |
652f89f6 TM |
1464 | unlock_no_action: |
1465 | rcu_read_unlock(); | |
6ee41268 TM |
1466 | out_no_action: |
1467 | task->tk_action = NULL; | |
b257957e AB |
1468 | } |
1469 | ||
24ac23ab TM |
1470 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1471 | { | |
1472 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1473 | |
24ac23ab | 1474 | data->rpc_status = task->tk_status; |
d898528c | 1475 | |
14516c3a TM |
1476 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1477 | return; | |
d898528c | 1478 | |
24ac23ab | 1479 | if (task->tk_status == 0) { |
807d66d8 TM |
1480 | if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) { |
1481 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1482 | case S_IFREG: |
1483 | break; | |
1484 | case S_IFLNK: | |
24ac23ab | 1485 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1486 | break; |
1487 | case S_IFDIR: | |
24ac23ab | 1488 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1489 | break; |
1490 | default: | |
24ac23ab | 1491 | data->rpc_status = -ENOTDIR; |
807d66d8 | 1492 | } |
6f926b5b | 1493 | } |
26e976a8 | 1494 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1495 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1496 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1497 | } |
3e309914 | 1498 | data->rpc_done = 1; |
24ac23ab | 1499 | } |
6f926b5b | 1500 | |
24ac23ab TM |
1501 | static void nfs4_open_release(void *calldata) |
1502 | { | |
1503 | struct nfs4_opendata *data = calldata; | |
1504 | struct nfs4_state *state = NULL; | |
1505 | ||
1506 | /* If this request hasn't been cancelled, do nothing */ | |
1507 | if (data->cancelled == 0) | |
1508 | goto out_free; | |
1509 | /* In case of error, no cleanup! */ | |
3e309914 | 1510 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1511 | goto out_free; |
1512 | /* In case we need an open_confirm, no cleanup! */ | |
1513 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1514 | goto out_free; | |
24ac23ab | 1515 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1516 | if (!IS_ERR(state)) |
643168c2 | 1517 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1518 | out_free: |
c6d00e63 | 1519 | nfs4_opendata_put(data); |
24ac23ab TM |
1520 | } |
1521 | ||
1522 | static const struct rpc_call_ops nfs4_open_ops = { | |
1523 | .rpc_call_prepare = nfs4_open_prepare, | |
1524 | .rpc_call_done = nfs4_open_done, | |
1525 | .rpc_release = nfs4_open_release, | |
1526 | }; | |
1527 | ||
b257957e | 1528 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) |
24ac23ab TM |
1529 | { |
1530 | struct inode *dir = data->dir->d_inode; | |
1531 | struct nfs_server *server = NFS_SERVER(dir); | |
1532 | struct nfs_openargs *o_arg = &data->o_arg; | |
1533 | struct nfs_openres *o_res = &data->o_res; | |
1534 | struct rpc_task *task; | |
5138fde0 TM |
1535 | struct rpc_message msg = { |
1536 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1537 | .rpc_argp = o_arg, | |
1538 | .rpc_resp = o_res, | |
1539 | .rpc_cred = data->owner->so_cred, | |
1540 | }; | |
c970aa85 TM |
1541 | struct rpc_task_setup task_setup_data = { |
1542 | .rpc_client = server->client, | |
5138fde0 | 1543 | .rpc_message = &msg, |
c970aa85 TM |
1544 | .callback_ops = &nfs4_open_ops, |
1545 | .callback_data = data, | |
101070ca | 1546 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1547 | .flags = RPC_TASK_ASYNC, |
1548 | }; | |
24ac23ab TM |
1549 | int status; |
1550 | ||
9d12b216 | 1551 | nfs41_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 1552 | kref_get(&data->kref); |
3e309914 TM |
1553 | data->rpc_done = 0; |
1554 | data->rpc_status = 0; | |
2ced46c2 | 1555 | data->cancelled = 0; |
b257957e | 1556 | if (isrecover) |
8fe72bac | 1557 | nfs4_set_sequence_privileged(&o_arg->seq_args); |
c970aa85 | 1558 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1559 | if (IS_ERR(task)) |
1560 | return PTR_ERR(task); | |
1561 | status = nfs4_wait_for_completion_rpc_task(task); | |
1562 | if (status != 0) { | |
1563 | data->cancelled = 1; | |
1564 | smp_wmb(); | |
1565 | } else | |
1566 | status = data->rpc_status; | |
1567 | rpc_put_task(task); | |
1568 | ||
1569 | return status; | |
1570 | } | |
1571 | ||
1572 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1573 | { | |
1574 | struct inode *dir = data->dir->d_inode; | |
1575 | struct nfs_openres *o_res = &data->o_res; | |
1576 | int status; | |
1577 | ||
1578 | status = nfs4_run_open_task(data, 1); | |
1579 | if (status != 0 || !data->rpc_done) | |
1580 | return status; | |
1581 | ||
6926afd1 TM |
1582 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
1583 | ||
b257957e AB |
1584 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
1585 | status = _nfs4_proc_open_confirm(data); | |
1586 | if (status != 0) | |
1587 | return status; | |
1588 | } | |
1589 | ||
1590 | return status; | |
1591 | } | |
1592 | ||
6168f62c WAA |
1593 | static int nfs4_opendata_access(struct rpc_cred *cred, |
1594 | struct nfs4_opendata *opendata, | |
1595 | struct nfs4_state *state, fmode_t fmode) | |
1596 | { | |
1597 | struct nfs_access_entry cache; | |
1598 | u32 mask; | |
1599 | ||
1600 | /* access call failed or for some reason the server doesn't | |
1601 | * support any access modes -- defer access call until later */ | |
1602 | if (opendata->o_res.access_supported == 0) | |
1603 | return 0; | |
1604 | ||
1605 | mask = 0; | |
bbd3a8ee WAA |
1606 | /* don't check MAY_WRITE - a newly created file may not have |
1607 | * write mode bits, but POSIX allows the creating process to write */ | |
6168f62c WAA |
1608 | if (fmode & FMODE_READ) |
1609 | mask |= MAY_READ; | |
6168f62c WAA |
1610 | if (fmode & FMODE_EXEC) |
1611 | mask |= MAY_EXEC; | |
1612 | ||
1613 | cache.cred = cred; | |
1614 | cache.jiffies = jiffies; | |
1615 | nfs_access_set_mask(&cache, opendata->o_res.access_result); | |
1616 | nfs_access_add_cache(state->inode, &cache); | |
1617 | ||
bbd3a8ee | 1618 | if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0) |
6168f62c WAA |
1619 | return 0; |
1620 | ||
1621 | /* even though OPEN succeeded, access is denied. Close the file */ | |
1622 | nfs4_close_state(state, fmode); | |
998f40b5 | 1623 | return -EACCES; |
6168f62c WAA |
1624 | } |
1625 | ||
b257957e AB |
1626 | /* |
1627 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1628 | */ | |
1629 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1630 | { | |
1631 | struct inode *dir = data->dir->d_inode; | |
1632 | struct nfs_server *server = NFS_SERVER(dir); | |
1633 | struct nfs_openargs *o_arg = &data->o_arg; | |
1634 | struct nfs_openres *o_res = &data->o_res; | |
1635 | int status; | |
1636 | ||
1637 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
1638 | if (!data->rpc_done) |
1639 | return status; | |
1640 | if (status != 0) { | |
1641 | if (status == -NFS4ERR_BADNAME && | |
1642 | !(o_arg->open_flags & O_CREAT)) | |
1643 | return -ENOENT; | |
24ac23ab | 1644 | return status; |
08ef7bd3 | 1645 | } |
24ac23ab | 1646 | |
6926afd1 TM |
1647 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
1648 | ||
90ff0c54 | 1649 | if (o_arg->open_flags & O_CREAT) |
56ae19f3 | 1650 | update_changeattr(dir, &o_res->cinfo); |
0df5dd4a TM |
1651 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1652 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1653 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1654 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1655 | if (status != 0) |
24ac23ab | 1656 | return status; |
1da177e4 LT |
1657 | } |
1658 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1659 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1660 | return 0; |
1da177e4 LT |
1661 | } |
1662 | ||
d83217c1 AA |
1663 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1664 | { | |
1665 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1666 | } | |
1667 | ||
1da177e4 LT |
1668 | /* |
1669 | * OPEN_EXPIRED: | |
1670 | * reclaim state on the server after a network partition. | |
1671 | * Assumes caller holds the appropriate lock | |
1672 | */ | |
539cd03a | 1673 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1674 | { |
e56e0b78 | 1675 | struct nfs4_opendata *opendata; |
864472e9 | 1676 | int ret; |
1da177e4 | 1677 | |
6f220ed5 TM |
1678 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1679 | if (IS_ERR(opendata)) | |
1680 | return PTR_ERR(opendata); | |
864472e9 | 1681 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1682 | if (ret == -ESTALE) |
3d4ff43d | 1683 | d_drop(ctx->dentry); |
c6d00e63 | 1684 | nfs4_opendata_put(opendata); |
864472e9 | 1685 | return ret; |
1da177e4 LT |
1686 | } |
1687 | ||
a9ed2e25 | 1688 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1689 | { |
539cd03a | 1690 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1691 | struct nfs4_exception exception = { }; |
1692 | int err; | |
1693 | ||
1694 | do { | |
539cd03a | 1695 | err = _nfs4_open_expired(ctx, state); |
a9ed2e25 TM |
1696 | switch (err) { |
1697 | default: | |
1698 | goto out; | |
1699 | case -NFS4ERR_GRACE: | |
1700 | case -NFS4ERR_DELAY: | |
1701 | nfs4_handle_exception(server, err, &exception); | |
1702 | err = 0; | |
1703 | } | |
202b50dc | 1704 | } while (exception.retry); |
a9ed2e25 | 1705 | out: |
202b50dc TM |
1706 | return err; |
1707 | } | |
1708 | ||
1da177e4 LT |
1709 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1710 | { | |
1da177e4 | 1711 | struct nfs_open_context *ctx; |
864472e9 | 1712 | int ret; |
1da177e4 | 1713 | |
864472e9 TM |
1714 | ctx = nfs4_state_find_open_context(state); |
1715 | if (IS_ERR(ctx)) | |
1716 | return PTR_ERR(ctx); | |
539cd03a | 1717 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1718 | put_nfs_open_context(ctx); |
1719 | return ret; | |
1da177e4 LT |
1720 | } |
1721 | ||
f062eb6c | 1722 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd | 1723 | static void nfs41_clear_delegation_stateid(struct nfs4_state *state) |
f062eb6c | 1724 | { |
f062eb6c | 1725 | struct nfs_server *server = NFS_SERVER(state->inode); |
3e60ffdd CL |
1726 | nfs4_stateid *stateid = &state->stateid; |
1727 | int status; | |
1728 | ||
1729 | /* If a state reset has been done, test_stateid is unneeded */ | |
1730 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
1731 | return; | |
1732 | ||
1733 | status = nfs41_test_stateid(server, stateid); | |
1734 | if (status != NFS_OK) { | |
1735 | /* Free the stateid unless the server explicitly | |
1736 | * informs us the stateid is unrecognized. */ | |
1737 | if (status != -NFS4ERR_BAD_STATEID) | |
1738 | nfs41_free_stateid(server, stateid); | |
6938867e | 1739 | nfs_remove_bad_delegation(state->inode); |
3e60ffdd | 1740 | |
6938867e BS |
1741 | write_seqlock(&state->seqlock); |
1742 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
1743 | write_sequnlock(&state->seqlock); | |
3e60ffdd CL |
1744 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
1745 | } | |
1746 | } | |
1747 | ||
1748 | /** | |
1749 | * nfs41_check_open_stateid - possibly free an open stateid | |
1750 | * | |
1751 | * @state: NFSv4 state for an inode | |
1752 | * | |
1753 | * Returns NFS_OK if recovery for this stateid is now finished. | |
1754 | * Otherwise a negative NFS4ERR value is returned. | |
1755 | */ | |
1756 | static int nfs41_check_open_stateid(struct nfs4_state *state) | |
1757 | { | |
1758 | struct nfs_server *server = NFS_SERVER(state->inode); | |
fcb6d9c6 | 1759 | nfs4_stateid *stateid = &state->open_stateid; |
3e60ffdd CL |
1760 | int status; |
1761 | ||
1762 | /* If a state reset has been done, test_stateid is unneeded */ | |
1763 | if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) && | |
1764 | (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) && | |
1765 | (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0)) | |
1766 | return -NFS4ERR_BAD_STATEID; | |
1767 | ||
1768 | status = nfs41_test_stateid(server, stateid); | |
1769 | if (status != NFS_OK) { | |
1770 | /* Free the stateid unless the server explicitly | |
1771 | * informs us the stateid is unrecognized. */ | |
1772 | if (status != -NFS4ERR_BAD_STATEID) | |
1773 | nfs41_free_stateid(server, stateid); | |
1774 | ||
1775 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1776 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1777 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
b01dd1d8 BS |
1778 | } |
1779 | return status; | |
1780 | } | |
1781 | ||
1782 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
1783 | { | |
eb64cf96 | 1784 | int status; |
b01dd1d8 | 1785 | |
3e60ffdd CL |
1786 | nfs41_clear_delegation_stateid(state); |
1787 | status = nfs41_check_open_stateid(state); | |
eb64cf96 CL |
1788 | if (status != NFS_OK) |
1789 | status = nfs4_open_expired(sp, state); | |
1790 | return status; | |
f062eb6c BS |
1791 | } |
1792 | #endif | |
1793 | ||
aa53ed54 JL |
1794 | /* |
1795 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1796 | * fields corresponding to attributes that were used to store the verifier. | |
1797 | * Make sure we clobber those fields in the later setattr call | |
1798 | */ | |
1799 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1800 | { | |
1801 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1802 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1803 | sattr->ia_valid |= ATTR_ATIME; | |
1804 | ||
1805 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1806 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1807 | sattr->ia_valid |= ATTR_MTIME; | |
1808 | } | |
1809 | ||
1da177e4 | 1810 | /* |
24ac23ab | 1811 | * Returns a referenced nfs4_state |
1da177e4 | 1812 | */ |
82be417a AA |
1813 | static int _nfs4_do_open(struct inode *dir, |
1814 | struct dentry *dentry, | |
1815 | fmode_t fmode, | |
1816 | int flags, | |
1817 | struct iattr *sattr, | |
1818 | struct rpc_cred *cred, | |
1819 | struct nfs4_state **res, | |
1820 | struct nfs4_threshold **ctx_th) | |
1da177e4 LT |
1821 | { |
1822 | struct nfs4_state_owner *sp; | |
1823 | struct nfs4_state *state = NULL; | |
1824 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1825 | struct nfs4_opendata *opendata; |
aac00a8d | 1826 | int status; |
1da177e4 LT |
1827 | |
1828 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 1829 | status = -ENOMEM; |
d1e284d5 TM |
1830 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
1831 | if (sp == NULL) { | |
1da177e4 LT |
1832 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
1833 | goto out_err; | |
1834 | } | |
58d9714a TM |
1835 | status = nfs4_recover_expired_lease(server); |
1836 | if (status != 0) | |
b4454fe1 | 1837 | goto err_put_state_owner; |
82a2c1b7 AV |
1838 | if (dentry->d_inode != NULL) |
1839 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 1840 | status = -ENOMEM; |
82a2c1b7 | 1841 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, GFP_KERNEL); |
e56e0b78 | 1842 | if (opendata == NULL) |
95d35cb4 | 1843 | goto err_put_state_owner; |
1da177e4 | 1844 | |
82be417a AA |
1845 | if (ctx_th && server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
1846 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
1847 | if (!opendata->f_attr.mdsthreshold) | |
1848 | goto err_opendata_put; | |
1549210f | 1849 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 1850 | } |
82a2c1b7 AV |
1851 | if (dentry->d_inode != NULL) |
1852 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 1853 | |
24ac23ab | 1854 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1855 | if (status != 0) |
c6d00e63 | 1856 | goto err_opendata_put; |
1da177e4 | 1857 | |
24ac23ab | 1858 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1859 | status = PTR_ERR(state); |
1860 | if (IS_ERR(state)) | |
c6d00e63 | 1861 | goto err_opendata_put; |
0df5dd4a | 1862 | if (server->caps & NFS_CAP_POSIX_LOCK) |
8e469ebd | 1863 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); |
0ab64e0e | 1864 | |
6168f62c WAA |
1865 | status = nfs4_opendata_access(cred, opendata, state, fmode); |
1866 | if (status != 0) | |
1867 | goto err_opendata_put; | |
1868 | ||
0ab64e0e TM |
1869 | if (opendata->o_arg.open_flags & O_EXCL) { |
1870 | nfs4_exclusive_attrset(opendata, sattr); | |
1871 | ||
1872 | nfs_fattr_init(opendata->o_res.f_attr); | |
1873 | status = nfs4_do_setattr(state->inode, cred, | |
1874 | opendata->o_res.f_attr, sattr, | |
1875 | state); | |
1876 | if (status == 0) | |
1877 | nfs_setattr_update_inode(state->inode, sattr); | |
1878 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
1879 | } | |
82be417a AA |
1880 | |
1881 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) | |
1882 | *ctx_th = opendata->f_attr.mdsthreshold; | |
1883 | else | |
1884 | kfree(opendata->f_attr.mdsthreshold); | |
1885 | opendata->f_attr.mdsthreshold = NULL; | |
1886 | ||
c6d00e63 | 1887 | nfs4_opendata_put(opendata); |
1da177e4 | 1888 | nfs4_put_state_owner(sp); |
1da177e4 LT |
1889 | *res = state; |
1890 | return 0; | |
c6d00e63 | 1891 | err_opendata_put: |
82be417a | 1892 | kfree(opendata->f_attr.mdsthreshold); |
c6d00e63 | 1893 | nfs4_opendata_put(opendata); |
e56e0b78 TM |
1894 | err_put_state_owner: |
1895 | nfs4_put_state_owner(sp); | |
1da177e4 | 1896 | out_err: |
1da177e4 LT |
1897 | *res = NULL; |
1898 | return status; | |
1899 | } | |
1900 | ||
1901 | ||
82be417a AA |
1902 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
1903 | struct dentry *dentry, | |
1904 | fmode_t fmode, | |
1905 | int flags, | |
1906 | struct iattr *sattr, | |
1907 | struct rpc_cred *cred, | |
1908 | struct nfs4_threshold **ctx_th) | |
1da177e4 LT |
1909 | { |
1910 | struct nfs4_exception exception = { }; | |
1911 | struct nfs4_state *res; | |
1912 | int status; | |
1913 | ||
6168f62c | 1914 | fmode &= FMODE_READ|FMODE_WRITE|FMODE_EXEC; |
1da177e4 | 1915 | do { |
82be417a AA |
1916 | status = _nfs4_do_open(dir, dentry, fmode, flags, sattr, cred, |
1917 | &res, ctx_th); | |
1da177e4 LT |
1918 | if (status == 0) |
1919 | break; | |
1920 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1921 | * book-keeping w.r.t. state-changing operations | |
1922 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1923 | * It is actually a sign of a bug on the client or on the server. | |
1924 | * | |
1925 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1926 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1927 | * have unhashed the old state_owner for us, and that we can |
1928 | * therefore safely retry using a new one. We should still warn | |
1929 | * the user though... | |
1930 | */ | |
1931 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 1932 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
1933 | " returned a bad sequence-id error!\n", |
1934 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1935 | exception.retry = 1; |
1936 | continue; | |
1937 | } | |
550f5747 TM |
1938 | /* |
1939 | * BAD_STATEID on OPEN means that the server cancelled our | |
1940 | * state before it received the OPEN_CONFIRM. | |
1941 | * Recover by retrying the request as per the discussion | |
1942 | * on Page 181 of RFC3530. | |
1943 | */ | |
1944 | if (status == -NFS4ERR_BAD_STATEID) { | |
1945 | exception.retry = 1; | |
1946 | continue; | |
1947 | } | |
aac00a8d TM |
1948 | if (status == -EAGAIN) { |
1949 | /* We must have found a delegation */ | |
1950 | exception.retry = 1; | |
1951 | continue; | |
1952 | } | |
1da177e4 LT |
1953 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1954 | status, &exception)); | |
1955 | } while (exception.retry); | |
1956 | return res; | |
1957 | } | |
1958 | ||
659bfcd6 TM |
1959 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1960 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1961 | struct nfs4_state *state) | |
1da177e4 | 1962 | { |
3e4f6290 | 1963 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1964 | struct nfs_setattrargs arg = { |
3e4f6290 | 1965 | .fh = NFS_FH(inode), |
1da177e4 LT |
1966 | .iap = sattr, |
1967 | .server = server, | |
1968 | .bitmask = server->attr_bitmask, | |
1969 | }; | |
1970 | struct nfs_setattrres res = { | |
1971 | .fattr = fattr, | |
1972 | .server = server, | |
1973 | }; | |
1974 | struct rpc_message msg = { | |
659bfcd6 TM |
1975 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
1976 | .rpc_argp = &arg, | |
1977 | .rpc_resp = &res, | |
1978 | .rpc_cred = cred, | |
1da177e4 | 1979 | }; |
26e976a8 | 1980 | unsigned long timestamp = jiffies; |
65e4308d | 1981 | int status; |
1da177e4 | 1982 | |
0e574af1 | 1983 | nfs_fattr_init(fattr); |
1da177e4 | 1984 | |
4fc8796d | 1985 | if (state != NULL) { |
2a369153 TM |
1986 | struct nfs_lockowner lockowner = { |
1987 | .l_owner = current->files, | |
1988 | .l_pid = current->tgid, | |
1989 | }; | |
4fc8796d | 1990 | nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, |
2a369153 | 1991 | &lockowner); |
4fc8796d TM |
1992 | } else if (nfs4_copy_delegation_stateid(&arg.stateid, inode, |
1993 | FMODE_WRITE)) { | |
3e4f6290 | 1994 | /* Use that stateid */ |
08e9eac4 | 1995 | } else |
f597c537 | 1996 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 1997 | |
7c513058 | 1998 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
1999 | if (status == 0 && state != NULL) |
2000 | renew_lease(server, timestamp); | |
65e4308d | 2001 | return status; |
1da177e4 LT |
2002 | } |
2003 | ||
659bfcd6 TM |
2004 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2005 | struct nfs_fattr *fattr, struct iattr *sattr, | |
2006 | struct nfs4_state *state) | |
1da177e4 | 2007 | { |
3e4f6290 | 2008 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
2009 | struct nfs4_exception exception = { |
2010 | .state = state, | |
3114ea7a | 2011 | .inode = inode, |
a1d0b5ee | 2012 | }; |
1da177e4 LT |
2013 | int err; |
2014 | do { | |
451146be TM |
2015 | err = _nfs4_do_setattr(inode, cred, fattr, sattr, state); |
2016 | switch (err) { | |
2017 | case -NFS4ERR_OPENMODE: | |
2018 | if (state && !(state->state & FMODE_WRITE)) { | |
2019 | err = -EBADF; | |
2020 | if (sattr->ia_valid & ATTR_OPEN) | |
2021 | err = -EACCES; | |
2022 | goto out; | |
2023 | } | |
2024 | } | |
2025 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 2026 | } while (exception.retry); |
451146be | 2027 | out: |
1da177e4 LT |
2028 | return err; |
2029 | } | |
2030 | ||
2031 | struct nfs4_closedata { | |
2032 | struct inode *inode; | |
2033 | struct nfs4_state *state; | |
2034 | struct nfs_closeargs arg; | |
2035 | struct nfs_closeres res; | |
516a6af6 | 2036 | struct nfs_fattr fattr; |
26e976a8 | 2037 | unsigned long timestamp; |
f7e8917a FI |
2038 | bool roc; |
2039 | u32 roc_barrier; | |
1da177e4 LT |
2040 | }; |
2041 | ||
963d8fe5 | 2042 | static void nfs4_free_closedata(void *data) |
9512135d | 2043 | { |
963d8fe5 TM |
2044 | struct nfs4_closedata *calldata = data; |
2045 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 2046 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 2047 | |
f7e8917a FI |
2048 | if (calldata->roc) |
2049 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
2050 | nfs4_put_open_state(calldata->state); |
2051 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 2052 | nfs4_put_state_owner(sp); |
324d003b | 2053 | nfs_sb_deactive_async(sb); |
9512135d TM |
2054 | kfree(calldata); |
2055 | } | |
2056 | ||
88069f77 TM |
2057 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
2058 | fmode_t fmode) | |
2059 | { | |
2060 | spin_lock(&state->owner->so_lock); | |
2061 | if (!(fmode & FMODE_READ)) | |
2062 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2063 | if (!(fmode & FMODE_WRITE)) | |
2064 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2065 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
2066 | spin_unlock(&state->owner->so_lock); | |
2067 | } | |
2068 | ||
963d8fe5 | 2069 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2070 | { |
963d8fe5 | 2071 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2072 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
2073 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
2074 | ||
a3ca5651 | 2075 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2076 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2077 | return; | |
1da177e4 LT |
2078 | /* hmm. we are done with the inode, and in the process of freeing |
2079 | * the state_owner. we keep this around to process errors | |
2080 | */ | |
1da177e4 LT |
2081 | switch (task->tk_status) { |
2082 | case 0: | |
f7e8917a FI |
2083 | if (calldata->roc) |
2084 | pnfs_roc_set_barrier(state->inode, | |
2085 | calldata->roc_barrier); | |
45328c35 | 2086 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 2087 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
2088 | nfs4_close_clear_stateid_flags(state, |
2089 | calldata->arg.fmode); | |
1da177e4 LT |
2090 | break; |
2091 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
2092 | case -NFS4ERR_OLD_STATEID: |
2093 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2094 | case -NFS4ERR_EXPIRED: |
dc0b027d | 2095 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2096 | break; |
1da177e4 | 2097 | default: |
72211dbe TM |
2098 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
2099 | rpc_restart_call_prepare(task); | |
1da177e4 | 2100 | } |
72211dbe | 2101 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2102 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2103 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2104 | } |
2105 | ||
4ce70ada | 2106 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2107 | { |
4ce70ada | 2108 | struct nfs4_closedata *calldata = data; |
9512135d | 2109 | struct nfs4_state *state = calldata->state; |
7fdab069 | 2110 | struct inode *inode = calldata->inode; |
88069f77 | 2111 | int call_close = 0; |
9512135d | 2112 | |
a3ca5651 | 2113 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2114 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 2115 | return; |
003707c7 | 2116 | |
88069f77 TM |
2117 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
2118 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 2119 | spin_lock(&state->owner->so_lock); |
003707c7 | 2120 | /* Calculate the change in open mode */ |
e7616923 | 2121 | if (state->n_rdwr == 0) { |
003707c7 | 2122 | if (state->n_rdonly == 0) { |
88069f77 TM |
2123 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
2124 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2125 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
2126 | } |
2127 | if (state->n_wronly == 0) { | |
88069f77 TM |
2128 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
2129 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2130 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 2131 | } |
e7616923 | 2132 | } |
4cecb76f | 2133 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2134 | |
2135 | if (!call_close) { | |
963d8fe5 TM |
2136 | /* Note: exit _without_ calling nfs4_close_done */ |
2137 | task->tk_action = NULL; | |
a3ca5651 | 2138 | goto out; |
9512135d | 2139 | } |
88069f77 | 2140 | |
f7e8917a | 2141 | if (calldata->arg.fmode == 0) { |
88069f77 | 2142 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a | 2143 | if (calldata->roc && |
7fdab069 | 2144 | pnfs_roc_drain(inode, &calldata->roc_barrier, task)) |
a3ca5651 | 2145 | goto out; |
f7e8917a | 2146 | } |
88069f77 | 2147 | |
516a6af6 | 2148 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2149 | calldata->timestamp = jiffies; |
7fdab069 | 2150 | if (nfs4_setup_sequence(NFS_SERVER(inode), |
9d12b216 TM |
2151 | &calldata->arg.seq_args, |
2152 | &calldata->res.seq_res, | |
2240a9e2 TM |
2153 | task) != 0) |
2154 | nfs_release_seqid(calldata->arg.seqid); | |
a3ca5651 CL |
2155 | out: |
2156 | dprintk("%s: done!\n", __func__); | |
1da177e4 LT |
2157 | } |
2158 | ||
963d8fe5 | 2159 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2160 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2161 | .rpc_call_done = nfs4_close_done, |
2162 | .rpc_release = nfs4_free_closedata, | |
2163 | }; | |
2164 | ||
1da177e4 LT |
2165 | /* |
2166 | * It is possible for data to be read/written from a mem-mapped file | |
2167 | * after the sys_close call (which hits the vfs layer as a flush). | |
2168 | * This means that we can't safely call nfsv4 close on a file until | |
2169 | * the inode is cleared. This in turn means that we are not good | |
2170 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2171 | * share state even when we are done with one of the three share | |
2172 | * stateid's in the inode. | |
2173 | * | |
2174 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2175 | */ | |
1f7977c1 | 2176 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) |
1da177e4 | 2177 | { |
4a35bd41 | 2178 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2179 | struct nfs4_closedata *calldata; |
b39e625b TM |
2180 | struct nfs4_state_owner *sp = state->owner; |
2181 | struct rpc_task *task; | |
5138fde0 TM |
2182 | struct rpc_message msg = { |
2183 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2184 | .rpc_cred = state->owner->so_cred, | |
2185 | }; | |
c970aa85 TM |
2186 | struct rpc_task_setup task_setup_data = { |
2187 | .rpc_client = server->client, | |
5138fde0 | 2188 | .rpc_message = &msg, |
c970aa85 | 2189 | .callback_ops = &nfs4_close_ops, |
101070ca | 2190 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2191 | .flags = RPC_TASK_ASYNC, |
2192 | }; | |
9512135d | 2193 | int status = -ENOMEM; |
1da177e4 | 2194 | |
8535b2be | 2195 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2196 | if (calldata == NULL) |
9512135d | 2197 | goto out; |
9d12b216 | 2198 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2199 | calldata->inode = state->inode; |
1da177e4 | 2200 | calldata->state = state; |
4a35bd41 | 2201 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2202 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2203 | /* Serialization for the sequence id */ |
8535b2be | 2204 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2205 | if (calldata->arg.seqid == NULL) |
2206 | goto out_free_calldata; | |
dc0b027d | 2207 | calldata->arg.fmode = 0; |
a65318bf | 2208 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2209 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2210 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2211 | calldata->res.server = server; |
1f7977c1 | 2212 | calldata->roc = pnfs_roc(state->inode); |
643168c2 | 2213 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2214 | |
1174dd1f TM |
2215 | msg.rpc_argp = &calldata->arg; |
2216 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2217 | task_setup_data.callback_data = calldata; |
2218 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2219 | if (IS_ERR(task)) |
2220 | return PTR_ERR(task); | |
a49c3c77 TM |
2221 | status = 0; |
2222 | if (wait) | |
2223 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2224 | rpc_put_task(task); |
a49c3c77 | 2225 | return status; |
9512135d TM |
2226 | out_free_calldata: |
2227 | kfree(calldata); | |
2228 | out: | |
b39e625b TM |
2229 | nfs4_put_open_state(state); |
2230 | nfs4_put_state_owner(sp); | |
9512135d | 2231 | return status; |
1da177e4 LT |
2232 | } |
2233 | ||
2b484297 | 2234 | static struct inode * |
cd9a1c0e | 2235 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2236 | { |
1da177e4 | 2237 | struct nfs4_state *state; |
1da177e4 | 2238 | |
565277f6 | 2239 | /* Protect against concurrent sillydeletes */ |
82be417a AA |
2240 | state = nfs4_do_open(dir, ctx->dentry, ctx->mode, open_flags, attr, |
2241 | ctx->cred, &ctx->mdsthreshold); | |
f46e0bd3 TM |
2242 | if (IS_ERR(state)) |
2243 | return ERR_CAST(state); | |
cd9a1c0e | 2244 | ctx->state = state; |
f46e0bd3 | 2245 | return igrab(state->inode); |
1da177e4 LT |
2246 | } |
2247 | ||
1185a552 | 2248 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2249 | { |
2250 | if (ctx->state == NULL) | |
2251 | return; | |
2252 | if (is_sync) | |
643168c2 | 2253 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2254 | else |
643168c2 | 2255 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2256 | } |
1da177e4 LT |
2257 | |
2258 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2259 | { | |
43652ad5 BH |
2260 | struct nfs4_server_caps_arg args = { |
2261 | .fhandle = fhandle, | |
2262 | }; | |
1da177e4 LT |
2263 | struct nfs4_server_caps_res res = {}; |
2264 | struct rpc_message msg = { | |
2265 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2266 | .rpc_argp = &args, |
1da177e4 LT |
2267 | .rpc_resp = &res, |
2268 | }; | |
2269 | int status; | |
2270 | ||
7c513058 | 2271 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2272 | if (status == 0) { |
2273 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2274 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2275 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2276 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2277 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2278 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2279 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2280 | server->caps |= NFS_CAP_ACLS; | |
2281 | if (res.has_links != 0) | |
2282 | server->caps |= NFS_CAP_HARDLINKS; | |
2283 | if (res.has_symlinks != 0) | |
2284 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2285 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2286 | server->caps |= NFS_CAP_FILEID; | |
2287 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2288 | server->caps |= NFS_CAP_MODE; | |
2289 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2290 | server->caps |= NFS_CAP_NLINK; | |
2291 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2292 | server->caps |= NFS_CAP_OWNER; | |
2293 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2294 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2295 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2296 | server->caps |= NFS_CAP_ATIME; | |
2297 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2298 | server->caps |= NFS_CAP_CTIME; | |
2299 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2300 | server->caps |= NFS_CAP_MTIME; | |
2301 | ||
a65318bf TM |
2302 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2303 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2304 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 | 2305 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 2306 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 2307 | } |
cccef3b9 | 2308 | |
1da177e4 LT |
2309 | return status; |
2310 | } | |
2311 | ||
55a97593 | 2312 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2313 | { |
2314 | struct nfs4_exception exception = { }; | |
2315 | int err; | |
2316 | do { | |
2317 | err = nfs4_handle_exception(server, | |
2318 | _nfs4_server_capabilities(server, fhandle), | |
2319 | &exception); | |
2320 | } while (exception.retry); | |
2321 | return err; | |
2322 | } | |
2323 | ||
2324 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2325 | struct nfs_fsinfo *info) | |
2326 | { | |
1da177e4 LT |
2327 | struct nfs4_lookup_root_arg args = { |
2328 | .bitmask = nfs4_fattr_bitmap, | |
2329 | }; | |
2330 | struct nfs4_lookup_res res = { | |
2331 | .server = server, | |
0e574af1 | 2332 | .fattr = info->fattr, |
1da177e4 LT |
2333 | .fh = fhandle, |
2334 | }; | |
2335 | struct rpc_message msg = { | |
2336 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2337 | .rpc_argp = &args, | |
2338 | .rpc_resp = &res, | |
2339 | }; | |
008f55d0 | 2340 | |
0e574af1 | 2341 | nfs_fattr_init(info->fattr); |
7c513058 | 2342 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2343 | } |
2344 | ||
2345 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2346 | struct nfs_fsinfo *info) | |
2347 | { | |
2348 | struct nfs4_exception exception = { }; | |
2349 | int err; | |
2350 | do { | |
fb8a5ba8 BS |
2351 | err = _nfs4_lookup_root(server, fhandle, info); |
2352 | switch (err) { | |
2353 | case 0: | |
2354 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 2355 | goto out; |
fb8a5ba8 BS |
2356 | default: |
2357 | err = nfs4_handle_exception(server, err, &exception); | |
2358 | } | |
1da177e4 | 2359 | } while (exception.retry); |
05e9cfb4 | 2360 | out: |
1da177e4 LT |
2361 | return err; |
2362 | } | |
2363 | ||
8f70e95f BS |
2364 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2365 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2366 | { | |
2367 | struct rpc_auth *auth; | |
2368 | int ret; | |
2369 | ||
2370 | auth = rpcauth_create(flavor, server->client); | |
e8d920c5 | 2371 | if (IS_ERR(auth)) { |
8f70e95f BS |
2372 | ret = -EIO; |
2373 | goto out; | |
2374 | } | |
2375 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2376 | out: |
2377 | return ret; | |
2378 | } | |
2379 | ||
801a16dc | 2380 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2381 | struct nfs_fsinfo *info) |
1da177e4 | 2382 | { |
8f70e95f | 2383 | int i, len, status = 0; |
0fabee24 | 2384 | rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS]; |
1da177e4 | 2385 | |
6a1a1e34 | 2386 | len = rpcauth_list_flavors(flav_array, ARRAY_SIZE(flav_array)); |
4ea8fed5 TM |
2387 | if (len < 0) |
2388 | return len; | |
8f70e95f BS |
2389 | |
2390 | for (i = 0; i < len; i++) { | |
6a1a1e34 CL |
2391 | /* AUTH_UNIX is the default flavor if none was specified, |
2392 | * thus has already been tried. */ | |
2393 | if (flav_array[i] == RPC_AUTH_UNIX) | |
2394 | continue; | |
2395 | ||
8f70e95f | 2396 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); |
fb8a5ba8 | 2397 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2398 | continue; |
2399 | break; | |
8f70e95f | 2400 | } |
fb8a5ba8 BS |
2401 | /* |
2402 | * -EACCESS could mean that the user doesn't have correct permissions | |
2403 | * to access the mount. It could also mean that we tried to mount | |
2404 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2405 | * existing mount programs don't handle -EACCES very well so it should | |
2406 | * be mapped to -EPERM instead. | |
2407 | */ | |
2408 | if (status == -EACCES) | |
2409 | status = -EPERM; | |
801a16dc BS |
2410 | return status; |
2411 | } | |
2412 | ||
2413 | /* | |
2414 | * get the file handle for the "/" directory on the server | |
2415 | */ | |
3028eb2b BS |
2416 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
2417 | struct nfs_fsinfo *info) | |
801a16dc | 2418 | { |
fca78d6d | 2419 | int minor_version = server->nfs_client->cl_minorversion; |
801a16dc | 2420 | int status = nfs4_lookup_root(server, fhandle, info); |
fb8a5ba8 BS |
2421 | if ((status == -NFS4ERR_WRONGSEC) && !(server->flags & NFS_MOUNT_SECFLAVOUR)) |
2422 | /* | |
2423 | * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM | |
2424 | * by nfs4_map_errors() as this function exits. | |
2425 | */ | |
fca78d6d | 2426 | status = nfs_v4_minor_ops[minor_version]->find_root_sec(server, fhandle, info); |
1da177e4 LT |
2427 | if (status == 0) |
2428 | status = nfs4_server_capabilities(server, fhandle); | |
2429 | if (status == 0) | |
2430 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2431 | return nfs4_map_errors(status); |
1da177e4 LT |
2432 | } |
2433 | ||
bae36241 BS |
2434 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
2435 | struct nfs_fsinfo *info) | |
2436 | { | |
2437 | int error; | |
2438 | struct nfs_fattr *fattr = info->fattr; | |
2439 | ||
2440 | error = nfs4_server_capabilities(server, mntfh); | |
2441 | if (error < 0) { | |
2442 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
2443 | return error; | |
2444 | } | |
2445 | ||
2446 | error = nfs4_proc_getattr(server, mntfh, fattr); | |
2447 | if (error < 0) { | |
2448 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
2449 | return error; | |
2450 | } | |
2451 | ||
2452 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
2453 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
2454 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
2455 | ||
2456 | return error; | |
2457 | } | |
2458 | ||
6b97fd3d MN |
2459 | /* |
2460 | * Get locations and (maybe) other attributes of a referral. | |
2461 | * Note that we'll actually follow the referral later when | |
2462 | * we detect fsid mismatch in inode revalidation | |
2463 | */ | |
f05d147f BS |
2464 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
2465 | const struct qstr *name, struct nfs_fattr *fattr, | |
2466 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
2467 | { |
2468 | int status = -ENOMEM; | |
2469 | struct page *page = NULL; | |
2470 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2471 | |
2472 | page = alloc_page(GFP_KERNEL); | |
2473 | if (page == NULL) | |
2474 | goto out; | |
2475 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2476 | if (locations == NULL) | |
2477 | goto out; | |
2478 | ||
f05d147f | 2479 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
2480 | if (status != 0) |
2481 | goto out; | |
2482 | /* Make sure server returned a different fsid for the referral */ | |
2483 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2484 | dprintk("%s: server did not return a different fsid for" |
2485 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2486 | status = -EIO; |
2487 | goto out; | |
2488 | } | |
533eb461 AA |
2489 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2490 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2491 | |
533eb461 | 2492 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2493 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2494 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2495 | out: | |
2496 | if (page) | |
2497 | __free_page(page); | |
5d7ca35a | 2498 | kfree(locations); |
6b97fd3d MN |
2499 | return status; |
2500 | } | |
2501 | ||
1da177e4 LT |
2502 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2503 | { | |
2504 | struct nfs4_getattr_arg args = { | |
2505 | .fh = fhandle, | |
2506 | .bitmask = server->attr_bitmask, | |
2507 | }; | |
2508 | struct nfs4_getattr_res res = { | |
2509 | .fattr = fattr, | |
2510 | .server = server, | |
2511 | }; | |
2512 | struct rpc_message msg = { | |
2513 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2514 | .rpc_argp = &args, | |
2515 | .rpc_resp = &res, | |
2516 | }; | |
2517 | ||
0e574af1 | 2518 | nfs_fattr_init(fattr); |
7c513058 | 2519 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2520 | } |
2521 | ||
2522 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2523 | { | |
2524 | struct nfs4_exception exception = { }; | |
2525 | int err; | |
2526 | do { | |
2527 | err = nfs4_handle_exception(server, | |
2528 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2529 | &exception); | |
2530 | } while (exception.retry); | |
2531 | return err; | |
2532 | } | |
2533 | ||
2534 | /* | |
2535 | * The file is not closed if it is opened due to the a request to change | |
2536 | * the size of the file. The open call will not be needed once the | |
2537 | * VFS layer lookup-intents are implemented. | |
2538 | * | |
2539 | * Close is called when the inode is destroyed. | |
2540 | * If we haven't opened the file for O_WRONLY, we | |
2541 | * need to in the size_change case to obtain a stateid. | |
2542 | * | |
2543 | * Got race? | |
2544 | * Because OPEN is always done by name in nfsv4, it is | |
2545 | * possible that we opened a different file by the same | |
2546 | * name. We can recognize this race condition, but we | |
2547 | * can't do anything about it besides returning an error. | |
2548 | * | |
2549 | * This will be fixed with VFS changes (lookup-intent). | |
2550 | */ | |
2551 | static int | |
2552 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2553 | struct iattr *sattr) | |
2554 | { | |
08e9eac4 | 2555 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2556 | struct rpc_cred *cred = NULL; |
d530838b | 2557 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2558 | int status; |
2559 | ||
8a1636c4 BH |
2560 | if (pnfs_ld_layoutret_on_setattr(inode)) |
2561 | pnfs_return_layout(inode); | |
2562 | ||
0e574af1 | 2563 | nfs_fattr_init(fattr); |
1da177e4 | 2564 | |
2669940d AA |
2565 | /* Deal with open(O_TRUNC) */ |
2566 | if (sattr->ia_valid & ATTR_OPEN) | |
2567 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME|ATTR_OPEN); | |
2568 | ||
2569 | /* Optimization: if the end result is no change, don't RPC */ | |
2570 | if ((sattr->ia_valid & ~(ATTR_FILE)) == 0) | |
2571 | return 0; | |
2572 | ||
d530838b | 2573 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2574 | if (sattr->ia_valid & ATTR_FILE) { |
2575 | struct nfs_open_context *ctx; | |
2576 | ||
2577 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2578 | if (ctx) { |
2579 | cred = ctx->cred; | |
2580 | state = ctx->state; | |
2581 | } | |
659bfcd6 | 2582 | } |
08e9eac4 | 2583 | |
659bfcd6 | 2584 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2585 | if (status == 0) |
2586 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2587 | return status; |
2588 | } | |
2589 | ||
0c2e53f1 TM |
2590 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
2591 | const struct qstr *name, struct nfs_fh *fhandle, | |
2592 | struct nfs_fattr *fattr) | |
2b3de441 | 2593 | { |
0c2e53f1 | 2594 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
2595 | int status; |
2596 | struct nfs4_lookup_arg args = { | |
2597 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 2598 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
2599 | .name = name, |
2600 | }; | |
2601 | struct nfs4_lookup_res res = { | |
2602 | .server = server, | |
2603 | .fattr = fattr, | |
2604 | .fh = fhandle, | |
2605 | }; | |
2606 | struct rpc_message msg = { | |
2607 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2608 | .rpc_argp = &args, | |
2609 | .rpc_resp = &res, | |
2610 | }; | |
2611 | ||
2612 | nfs_fattr_init(fattr); | |
2613 | ||
1da177e4 | 2614 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 2615 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2616 | dprintk("NFS reply lookup: %d\n", status); |
2617 | return status; | |
2618 | } | |
2619 | ||
72de53ec | 2620 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 2621 | { |
7ebb9315 | 2622 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 2623 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
2624 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
2625 | fattr->nlink = 2; | |
2626 | } | |
2627 | ||
72de53ec BS |
2628 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
2629 | struct qstr *name, struct nfs_fh *fhandle, | |
2630 | struct nfs_fattr *fattr) | |
1da177e4 LT |
2631 | { |
2632 | struct nfs4_exception exception = { }; | |
72de53ec | 2633 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
2634 | int err; |
2635 | do { | |
72de53ec BS |
2636 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr); |
2637 | switch (err) { | |
08ef7bd3 | 2638 | case -NFS4ERR_BADNAME: |
72de53ec BS |
2639 | err = -ENOENT; |
2640 | goto out; | |
0c2e53f1 | 2641 | case -NFS4ERR_MOVED: |
f05d147f | 2642 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
72de53ec | 2643 | goto out; |
0c2e53f1 | 2644 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
2645 | err = -EPERM; |
2646 | if (client != *clnt) | |
2647 | goto out; | |
2648 | ||
2649 | client = nfs4_create_sec_client(client, dir, name); | |
2650 | if (IS_ERR(client)) | |
2651 | return PTR_ERR(client); | |
2652 | ||
2653 | exception.retry = 1; | |
2654 | break; | |
2655 | default: | |
2656 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 2657 | } |
1da177e4 | 2658 | } while (exception.retry); |
72de53ec BS |
2659 | |
2660 | out: | |
2661 | if (err == 0) | |
2662 | *clnt = client; | |
2663 | else if (client != *clnt) | |
2664 | rpc_shutdown_client(client); | |
2665 | ||
1da177e4 LT |
2666 | return err; |
2667 | } | |
2668 | ||
80a16b21 | 2669 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, |
72de53ec BS |
2670 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2671 | { | |
2672 | int status; | |
2673 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
2674 | ||
2675 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2676 | if (client != NFS_CLIENT(dir)) { | |
2677 | rpc_shutdown_client(client); | |
2678 | nfs_fixup_secinfo_attributes(fattr); | |
2679 | } | |
2680 | return status; | |
2681 | } | |
2682 | ||
f05d147f BS |
2683 | struct rpc_clnt * |
2684 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, | |
2685 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2686 | { | |
2687 | int status; | |
2688 | struct rpc_clnt *client = rpc_clone_client(NFS_CLIENT(dir)); | |
2689 | ||
2690 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2691 | if (status < 0) { | |
2692 | rpc_shutdown_client(client); | |
2693 | return ERR_PTR(status); | |
2694 | } | |
2695 | return client; | |
2696 | } | |
2697 | ||
1da177e4 LT |
2698 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
2699 | { | |
76b32999 | 2700 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2701 | struct nfs4_accessargs args = { |
2702 | .fh = NFS_FH(inode), | |
a4980e78 | 2703 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
2704 | }; |
2705 | struct nfs4_accessres res = { | |
2706 | .server = server, | |
1da177e4 | 2707 | }; |
1da177e4 LT |
2708 | struct rpc_message msg = { |
2709 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2710 | .rpc_argp = &args, | |
2711 | .rpc_resp = &res, | |
2712 | .rpc_cred = entry->cred, | |
2713 | }; | |
2714 | int mode = entry->mask; | |
2715 | int status; | |
2716 | ||
2717 | /* | |
2718 | * Determine which access bits we want to ask for... | |
2719 | */ | |
2720 | if (mode & MAY_READ) | |
2721 | args.access |= NFS4_ACCESS_READ; | |
2722 | if (S_ISDIR(inode->i_mode)) { | |
2723 | if (mode & MAY_WRITE) | |
2724 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2725 | if (mode & MAY_EXEC) | |
2726 | args.access |= NFS4_ACCESS_LOOKUP; | |
2727 | } else { | |
2728 | if (mode & MAY_WRITE) | |
2729 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2730 | if (mode & MAY_EXEC) | |
2731 | args.access |= NFS4_ACCESS_EXECUTE; | |
2732 | } | |
c407d41a TM |
2733 | |
2734 | res.fattr = nfs_alloc_fattr(); | |
2735 | if (res.fattr == NULL) | |
2736 | return -ENOMEM; | |
2737 | ||
7c513058 | 2738 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 2739 | if (!status) { |
6168f62c | 2740 | nfs_access_set_mask(entry, res.access); |
c407d41a | 2741 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2742 | } |
c407d41a | 2743 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2744 | return status; |
2745 | } | |
2746 | ||
2747 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2748 | { | |
2749 | struct nfs4_exception exception = { }; | |
2750 | int err; | |
2751 | do { | |
2752 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2753 | _nfs4_proc_access(inode, entry), | |
2754 | &exception); | |
2755 | } while (exception.retry); | |
2756 | return err; | |
2757 | } | |
2758 | ||
2759 | /* | |
2760 | * TODO: For the time being, we don't try to get any attributes | |
2761 | * along with any of the zero-copy operations READ, READDIR, | |
2762 | * READLINK, WRITE. | |
2763 | * | |
2764 | * In the case of the first three, we want to put the GETATTR | |
2765 | * after the read-type operation -- this is because it is hard | |
2766 | * to predict the length of a GETATTR response in v4, and thus | |
2767 | * align the READ data correctly. This means that the GETATTR | |
2768 | * may end up partially falling into the page cache, and we should | |
2769 | * shift it into the 'tail' of the xdr_buf before processing. | |
2770 | * To do this efficiently, we need to know the total length | |
2771 | * of data received, which doesn't seem to be available outside | |
2772 | * of the RPC layer. | |
2773 | * | |
2774 | * In the case of WRITE, we also want to put the GETATTR after | |
2775 | * the operation -- in this case because we want to make sure | |
140150db | 2776 | * we get the post-operation mtime and size. |
1da177e4 LT |
2777 | * |
2778 | * Both of these changes to the XDR layer would in fact be quite | |
2779 | * minor, but I decided to leave them for a subsequent patch. | |
2780 | */ | |
2781 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2782 | unsigned int pgbase, unsigned int pglen) | |
2783 | { | |
2784 | struct nfs4_readlink args = { | |
2785 | .fh = NFS_FH(inode), | |
2786 | .pgbase = pgbase, | |
2787 | .pglen = pglen, | |
2788 | .pages = &page, | |
2789 | }; | |
f50c7000 | 2790 | struct nfs4_readlink_res res; |
1da177e4 LT |
2791 | struct rpc_message msg = { |
2792 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2793 | .rpc_argp = &args, | |
f50c7000 | 2794 | .rpc_resp = &res, |
1da177e4 LT |
2795 | }; |
2796 | ||
7c513058 | 2797 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2798 | } |
2799 | ||
2800 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2801 | unsigned int pgbase, unsigned int pglen) | |
2802 | { | |
2803 | struct nfs4_exception exception = { }; | |
2804 | int err; | |
2805 | do { | |
2806 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2807 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2808 | &exception); | |
2809 | } while (exception.retry); | |
2810 | return err; | |
2811 | } | |
2812 | ||
1da177e4 | 2813 | /* |
8867fe58 | 2814 | * This is just for mknod. open(O_CREAT) will always do ->open_context(). |
1da177e4 | 2815 | */ |
1da177e4 LT |
2816 | static int |
2817 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 2818 | int flags) |
1da177e4 | 2819 | { |
8867fe58 | 2820 | struct nfs_open_context *ctx; |
1da177e4 | 2821 | struct nfs4_state *state; |
1da177e4 LT |
2822 | int status = 0; |
2823 | ||
8867fe58 MS |
2824 | ctx = alloc_nfs_open_context(dentry, FMODE_READ); |
2825 | if (IS_ERR(ctx)) | |
2826 | return PTR_ERR(ctx); | |
2827 | ||
a8a5da99 | 2828 | sattr->ia_mode &= ~current_umask(); |
8626e4a4 TM |
2829 | state = nfs4_do_open(dir, dentry, ctx->mode, |
2830 | flags, sattr, ctx->cred, | |
2831 | &ctx->mdsthreshold); | |
d4d9cdcb | 2832 | d_drop(dentry); |
1da177e4 LT |
2833 | if (IS_ERR(state)) { |
2834 | status = PTR_ERR(state); | |
c0204fd2 | 2835 | goto out; |
1da177e4 | 2836 | } |
d4d9cdcb | 2837 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2838 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
8867fe58 | 2839 | ctx->state = state; |
1da177e4 | 2840 | out: |
8867fe58 | 2841 | put_nfs_open_context(ctx); |
1da177e4 LT |
2842 | return status; |
2843 | } | |
2844 | ||
2845 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2846 | { | |
16e42959 | 2847 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2848 | struct nfs_removeargs args = { |
1da177e4 | 2849 | .fh = NFS_FH(dir), |
26fe5750 | 2850 | .name = *name, |
16e42959 | 2851 | }; |
4fdc17b2 | 2852 | struct nfs_removeres res = { |
16e42959 | 2853 | .server = server, |
1da177e4 | 2854 | }; |
1da177e4 | 2855 | struct rpc_message msg = { |
4fdc17b2 TM |
2856 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
2857 | .rpc_argp = &args, | |
2858 | .rpc_resp = &res, | |
1da177e4 | 2859 | }; |
778d2817 | 2860 | int status; |
1da177e4 | 2861 | |
7c513058 | 2862 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 2863 | if (status == 0) |
16e42959 | 2864 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
2865 | return status; |
2866 | } | |
2867 | ||
2868 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2869 | { | |
2870 | struct nfs4_exception exception = { }; | |
2871 | int err; | |
2872 | do { | |
2873 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2874 | _nfs4_proc_remove(dir, name), | |
2875 | &exception); | |
2876 | } while (exception.retry); | |
2877 | return err; | |
2878 | } | |
2879 | ||
e4eff1a6 | 2880 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 2881 | { |
e4eff1a6 TM |
2882 | struct nfs_server *server = NFS_SERVER(dir); |
2883 | struct nfs_removeargs *args = msg->rpc_argp; | |
2884 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 2885 | |
e4eff1a6 | 2886 | res->server = server; |
1da177e4 | 2887 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
9d12b216 | 2888 | nfs41_init_sequence(&args->seq_args, &res->seq_res, 1); |
1da177e4 LT |
2889 | } |
2890 | ||
34e137cc BS |
2891 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
2892 | { | |
d9afbd1b TM |
2893 | nfs4_setup_sequence(NFS_SERVER(data->dir), |
2894 | &data->args.seq_args, | |
2895 | &data->res.seq_res, | |
2896 | task); | |
1da177e4 LT |
2897 | } |
2898 | ||
e4eff1a6 | 2899 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 2900 | { |
e4eff1a6 TM |
2901 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
2902 | ||
14516c3a TM |
2903 | if (!nfs4_sequence_done(task, &res->seq_res)) |
2904 | return 0; | |
9e33bed5 | 2905 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
2906 | return 0; |
2907 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 2908 | return 1; |
1da177e4 LT |
2909 | } |
2910 | ||
d3d4152a JL |
2911 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
2912 | { | |
2913 | struct nfs_server *server = NFS_SERVER(dir); | |
2914 | struct nfs_renameargs *arg = msg->rpc_argp; | |
2915 | struct nfs_renameres *res = msg->rpc_resp; | |
2916 | ||
2917 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 2918 | res->server = server; |
9d12b216 | 2919 | nfs41_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
2920 | } |
2921 | ||
c6bfa1a1 BS |
2922 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
2923 | { | |
d9afbd1b TM |
2924 | nfs4_setup_sequence(NFS_SERVER(data->old_dir), |
2925 | &data->args.seq_args, | |
2926 | &data->res.seq_res, | |
2927 | task); | |
d3d4152a JL |
2928 | } |
2929 | ||
2930 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
2931 | struct inode *new_dir) | |
2932 | { | |
2933 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
2934 | ||
2935 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
2936 | return 0; | |
2937 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
2938 | return 0; | |
2939 | ||
2940 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 2941 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
2942 | return 1; |
2943 | } | |
2944 | ||
1da177e4 LT |
2945 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
2946 | struct inode *new_dir, struct qstr *new_name) | |
2947 | { | |
6caf2c82 | 2948 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 2949 | struct nfs_renameargs arg = { |
1da177e4 LT |
2950 | .old_dir = NFS_FH(old_dir), |
2951 | .new_dir = NFS_FH(new_dir), | |
2952 | .old_name = old_name, | |
2953 | .new_name = new_name, | |
6caf2c82 | 2954 | }; |
e8582a8b | 2955 | struct nfs_renameres res = { |
6caf2c82 | 2956 | .server = server, |
1da177e4 | 2957 | }; |
1da177e4 LT |
2958 | struct rpc_message msg = { |
2959 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
2960 | .rpc_argp = &arg, | |
2961 | .rpc_resp = &res, | |
2962 | }; | |
011fff72 | 2963 | int status = -ENOMEM; |
1da177e4 | 2964 | |
7c513058 | 2965 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
2966 | if (!status) { |
2967 | update_changeattr(old_dir, &res.old_cinfo); | |
2968 | update_changeattr(new_dir, &res.new_cinfo); | |
2969 | } | |
2970 | return status; | |
2971 | } | |
2972 | ||
2973 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2974 | struct inode *new_dir, struct qstr *new_name) | |
2975 | { | |
2976 | struct nfs4_exception exception = { }; | |
2977 | int err; | |
2978 | do { | |
2979 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
2980 | _nfs4_proc_rename(old_dir, old_name, | |
2981 | new_dir, new_name), | |
2982 | &exception); | |
2983 | } while (exception.retry); | |
2984 | return err; | |
2985 | } | |
2986 | ||
2987 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2988 | { | |
91ba2eee | 2989 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2990 | struct nfs4_link_arg arg = { |
2991 | .fh = NFS_FH(inode), | |
2992 | .dir_fh = NFS_FH(dir), | |
2993 | .name = name, | |
91ba2eee TM |
2994 | .bitmask = server->attr_bitmask, |
2995 | }; | |
91ba2eee TM |
2996 | struct nfs4_link_res res = { |
2997 | .server = server, | |
1da177e4 | 2998 | }; |
1da177e4 LT |
2999 | struct rpc_message msg = { |
3000 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
3001 | .rpc_argp = &arg, | |
91ba2eee | 3002 | .rpc_resp = &res, |
1da177e4 | 3003 | }; |
136f2627 TM |
3004 | int status = -ENOMEM; |
3005 | ||
3006 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 3007 | if (res.fattr == NULL) |
136f2627 | 3008 | goto out; |
1da177e4 | 3009 | |
7c513058 | 3010 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
3011 | if (!status) { |
3012 | update_changeattr(dir, &res.cinfo); | |
73a3d07c | 3013 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 3014 | } |
136f2627 | 3015 | out: |
136f2627 | 3016 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3017 | return status; |
3018 | } | |
3019 | ||
3020 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3021 | { | |
3022 | struct nfs4_exception exception = { }; | |
3023 | int err; | |
3024 | do { | |
3025 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3026 | _nfs4_proc_link(inode, dir, name), | |
3027 | &exception); | |
3028 | } while (exception.retry); | |
3029 | return err; | |
3030 | } | |
3031 | ||
57dc9a57 TM |
3032 | struct nfs4_createdata { |
3033 | struct rpc_message msg; | |
3034 | struct nfs4_create_arg arg; | |
3035 | struct nfs4_create_res res; | |
3036 | struct nfs_fh fh; | |
3037 | struct nfs_fattr fattr; | |
57dc9a57 TM |
3038 | }; |
3039 | ||
3040 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
3041 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
3042 | { | |
3043 | struct nfs4_createdata *data; | |
3044 | ||
3045 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3046 | if (data != NULL) { | |
3047 | struct nfs_server *server = NFS_SERVER(dir); | |
3048 | ||
3049 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
3050 | data->msg.rpc_argp = &data->arg; | |
3051 | data->msg.rpc_resp = &data->res; | |
3052 | data->arg.dir_fh = NFS_FH(dir); | |
3053 | data->arg.server = server; | |
3054 | data->arg.name = name; | |
3055 | data->arg.attrs = sattr; | |
3056 | data->arg.ftype = ftype; | |
3057 | data->arg.bitmask = server->attr_bitmask; | |
3058 | data->res.server = server; | |
3059 | data->res.fh = &data->fh; | |
3060 | data->res.fattr = &data->fattr; | |
57dc9a57 | 3061 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
3062 | } |
3063 | return data; | |
3064 | } | |
3065 | ||
3066 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3067 | { | |
7c513058 | 3068 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3069 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3070 | if (status == 0) { |
3071 | update_changeattr(dir, &data->res.dir_cinfo); | |
57dc9a57 TM |
3072 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); |
3073 | } | |
3074 | return status; | |
3075 | } | |
3076 | ||
3077 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3078 | { | |
3079 | kfree(data); | |
3080 | } | |
3081 | ||
4f390c15 | 3082 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3083 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 3084 | { |
57dc9a57 TM |
3085 | struct nfs4_createdata *data; |
3086 | int status = -ENAMETOOLONG; | |
1da177e4 | 3087 | |
94a6d753 | 3088 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 3089 | goto out; |
4f390c15 | 3090 | |
57dc9a57 TM |
3091 | status = -ENOMEM; |
3092 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
3093 | if (data == NULL) | |
3094 | goto out; | |
3095 | ||
3096 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
3097 | data->arg.u.symlink.pages = &page; | |
3098 | data->arg.u.symlink.len = len; | |
1da177e4 | 3099 | |
57dc9a57 TM |
3100 | status = nfs4_do_create(dir, dentry, data); |
3101 | ||
3102 | nfs4_free_createdata(data); | |
3103 | out: | |
1da177e4 LT |
3104 | return status; |
3105 | } | |
3106 | ||
4f390c15 | 3107 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3108 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
3109 | { |
3110 | struct nfs4_exception exception = { }; | |
3111 | int err; | |
3112 | do { | |
3113 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
3114 | _nfs4_proc_symlink(dir, dentry, page, |
3115 | len, sattr), | |
1da177e4 LT |
3116 | &exception); |
3117 | } while (exception.retry); | |
3118 | return err; | |
3119 | } | |
3120 | ||
3121 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3122 | struct iattr *sattr) | |
3123 | { | |
57dc9a57 TM |
3124 | struct nfs4_createdata *data; |
3125 | int status = -ENOMEM; | |
1da177e4 | 3126 | |
57dc9a57 TM |
3127 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3128 | if (data == NULL) | |
3129 | goto out; | |
3130 | ||
3131 | status = nfs4_do_create(dir, dentry, data); | |
3132 | ||
3133 | nfs4_free_createdata(data); | |
3134 | out: | |
1da177e4 LT |
3135 | return status; |
3136 | } | |
3137 | ||
3138 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3139 | struct iattr *sattr) | |
3140 | { | |
3141 | struct nfs4_exception exception = { }; | |
3142 | int err; | |
a8a5da99 AK |
3143 | |
3144 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3145 | do { |
3146 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3147 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
3148 | &exception); | |
3149 | } while (exception.retry); | |
3150 | return err; | |
3151 | } | |
3152 | ||
3153 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3154 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3155 | { |
3156 | struct inode *dir = dentry->d_inode; | |
3157 | struct nfs4_readdir_arg args = { | |
3158 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3159 | .pages = pages, |
1da177e4 LT |
3160 | .pgbase = 0, |
3161 | .count = count, | |
96d25e53 | 3162 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3163 | .plus = plus, |
1da177e4 LT |
3164 | }; |
3165 | struct nfs4_readdir_res res; | |
3166 | struct rpc_message msg = { | |
3167 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3168 | .rpc_argp = &args, | |
3169 | .rpc_resp = &res, | |
3170 | .rpc_cred = cred, | |
3171 | }; | |
3172 | int status; | |
3173 | ||
3110ff80 | 3174 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
3175 | dentry->d_parent->d_name.name, |
3176 | dentry->d_name.name, | |
3177 | (unsigned long long)cookie); | |
c3f52af3 | 3178 | nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args); |
1da177e4 | 3179 | res.pgbase = args.pgbase; |
7c513058 | 3180 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3181 | if (status >= 0) { |
c3f52af3 | 3182 | memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3183 | status += args.pgbase; |
3184 | } | |
c4812998 TM |
3185 | |
3186 | nfs_invalidate_atime(dir); | |
3187 | ||
3110ff80 | 3188 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3189 | return status; |
3190 | } | |
3191 | ||
3192 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3193 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3194 | { |
3195 | struct nfs4_exception exception = { }; | |
3196 | int err; | |
3197 | do { | |
3198 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
3199 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 3200 | pages, count, plus), |
1da177e4 LT |
3201 | &exception); |
3202 | } while (exception.retry); | |
3203 | return err; | |
3204 | } | |
3205 | ||
3206 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3207 | struct iattr *sattr, dev_t rdev) | |
3208 | { | |
57dc9a57 TM |
3209 | struct nfs4_createdata *data; |
3210 | int mode = sattr->ia_mode; | |
3211 | int status = -ENOMEM; | |
1da177e4 | 3212 | |
57dc9a57 TM |
3213 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); |
3214 | if (data == NULL) | |
3215 | goto out; | |
3216 | ||
1da177e4 | 3217 | if (S_ISFIFO(mode)) |
57dc9a57 | 3218 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3219 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3220 | data->arg.ftype = NF4BLK; |
3221 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3222 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3223 | } |
3224 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3225 | data->arg.ftype = NF4CHR; |
3226 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3227 | data->arg.u.device.specdata2 = MINOR(rdev); | |
4ea8fed5 TM |
3228 | } else if (!S_ISSOCK(mode)) { |
3229 | status = -EINVAL; | |
3230 | goto out_free; | |
1da177e4 | 3231 | } |
1da177e4 | 3232 | |
57dc9a57 | 3233 | status = nfs4_do_create(dir, dentry, data); |
4ea8fed5 | 3234 | out_free: |
57dc9a57 TM |
3235 | nfs4_free_createdata(data); |
3236 | out: | |
1da177e4 LT |
3237 | return status; |
3238 | } | |
3239 | ||
3240 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3241 | struct iattr *sattr, dev_t rdev) | |
3242 | { | |
3243 | struct nfs4_exception exception = { }; | |
3244 | int err; | |
a8a5da99 AK |
3245 | |
3246 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3247 | do { |
3248 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3249 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
3250 | &exception); | |
3251 | } while (exception.retry); | |
3252 | return err; | |
3253 | } | |
3254 | ||
3255 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3256 | struct nfs_fsstat *fsstat) | |
3257 | { | |
3258 | struct nfs4_statfs_arg args = { | |
3259 | .fh = fhandle, | |
3260 | .bitmask = server->attr_bitmask, | |
3261 | }; | |
24ad148a BH |
3262 | struct nfs4_statfs_res res = { |
3263 | .fsstat = fsstat, | |
3264 | }; | |
1da177e4 LT |
3265 | struct rpc_message msg = { |
3266 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3267 | .rpc_argp = &args, | |
24ad148a | 3268 | .rpc_resp = &res, |
1da177e4 LT |
3269 | }; |
3270 | ||
0e574af1 | 3271 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3272 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3273 | } |
3274 | ||
3275 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3276 | { | |
3277 | struct nfs4_exception exception = { }; | |
3278 | int err; | |
3279 | do { | |
3280 | err = nfs4_handle_exception(server, | |
3281 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3282 | &exception); | |
3283 | } while (exception.retry); | |
3284 | return err; | |
3285 | } | |
3286 | ||
3287 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3288 | struct nfs_fsinfo *fsinfo) | |
3289 | { | |
3290 | struct nfs4_fsinfo_arg args = { | |
3291 | .fh = fhandle, | |
3292 | .bitmask = server->attr_bitmask, | |
3293 | }; | |
3dda5e43 BH |
3294 | struct nfs4_fsinfo_res res = { |
3295 | .fsinfo = fsinfo, | |
3296 | }; | |
1da177e4 LT |
3297 | struct rpc_message msg = { |
3298 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3299 | .rpc_argp = &args, | |
3dda5e43 | 3300 | .rpc_resp = &res, |
1da177e4 LT |
3301 | }; |
3302 | ||
7c513058 | 3303 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3304 | } |
3305 | ||
3306 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3307 | { | |
3308 | struct nfs4_exception exception = { }; | |
3309 | int err; | |
3310 | ||
3311 | do { | |
3312 | err = nfs4_handle_exception(server, | |
3313 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
3314 | &exception); | |
3315 | } while (exception.retry); | |
3316 | return err; | |
3317 | } | |
3318 | ||
3319 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3320 | { | |
e38eb650 BS |
3321 | int error; |
3322 | ||
0e574af1 | 3323 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 | 3324 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
dc182549 PT |
3325 | if (error == 0) { |
3326 | /* block layout checks this! */ | |
3327 | server->pnfs_blksize = fsinfo->blksize; | |
e38eb650 | 3328 | set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype); |
dc182549 | 3329 | } |
e38eb650 BS |
3330 | |
3331 | return error; | |
1da177e4 LT |
3332 | } |
3333 | ||
3334 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3335 | struct nfs_pathconf *pathconf) | |
3336 | { | |
3337 | struct nfs4_pathconf_arg args = { | |
3338 | .fh = fhandle, | |
3339 | .bitmask = server->attr_bitmask, | |
3340 | }; | |
d45b2989 BH |
3341 | struct nfs4_pathconf_res res = { |
3342 | .pathconf = pathconf, | |
3343 | }; | |
1da177e4 LT |
3344 | struct rpc_message msg = { |
3345 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3346 | .rpc_argp = &args, | |
d45b2989 | 3347 | .rpc_resp = &res, |
1da177e4 LT |
3348 | }; |
3349 | ||
3350 | /* None of the pathconf attributes are mandatory to implement */ | |
3351 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3352 | memset(pathconf, 0, sizeof(*pathconf)); | |
3353 | return 0; | |
3354 | } | |
3355 | ||
0e574af1 | 3356 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3357 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3358 | } |
3359 | ||
3360 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3361 | struct nfs_pathconf *pathconf) | |
3362 | { | |
3363 | struct nfs4_exception exception = { }; | |
3364 | int err; | |
3365 | ||
3366 | do { | |
3367 | err = nfs4_handle_exception(server, | |
3368 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3369 | &exception); | |
3370 | } while (exception.retry); | |
3371 | return err; | |
3372 | } | |
3373 | ||
d20581aa BH |
3374 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3375 | { | |
cd841605 | 3376 | nfs_invalidate_atime(data->header->inode); |
d20581aa BH |
3377 | } |
3378 | ||
cbdabc7f | 3379 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3380 | { |
cd841605 | 3381 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
1da177e4 | 3382 | |
9e33bed5 | 3383 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3384 | rpc_restart_call_prepare(task); |
ec06c096 | 3385 | return -EAGAIN; |
1da177e4 | 3386 | } |
8850df99 | 3387 | |
d20581aa | 3388 | __nfs4_read_done_cb(data); |
1da177e4 | 3389 | if (task->tk_status > 0) |
ec06c096 TM |
3390 | renew_lease(server, data->timestamp); |
3391 | return 0; | |
1da177e4 LT |
3392 | } |
3393 | ||
cbdabc7f AA |
3394 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3395 | { | |
3396 | ||
3397 | dprintk("--> %s\n", __func__); | |
3398 | ||
3399 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3400 | return -EAGAIN; | |
3401 | ||
d20581aa BH |
3402 | return data->read_done_cb ? data->read_done_cb(task, data) : |
3403 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
3404 | } |
3405 | ||
bdc7f021 | 3406 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3407 | { |
1da177e4 | 3408 | data->timestamp = jiffies; |
cbdabc7f | 3409 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3410 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
9d12b216 | 3411 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
1da177e4 LT |
3412 | } |
3413 | ||
ea7c3303 BS |
3414 | static void nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) |
3415 | { | |
d9afbd1b TM |
3416 | nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
3417 | &data->args.seq_args, | |
3418 | &data->res.seq_res, | |
3419 | task); | |
1da177e4 LT |
3420 | } |
3421 | ||
b029bc9b | 3422 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3423 | { |
cd841605 | 3424 | struct inode *inode = data->header->inode; |
1da177e4 | 3425 | |
9e33bed5 | 3426 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3427 | rpc_restart_call_prepare(task); |
788e7a89 | 3428 | return -EAGAIN; |
1da177e4 | 3429 | } |
4f9838c7 | 3430 | if (task->tk_status >= 0) { |
1da177e4 | 3431 | renew_lease(NFS_SERVER(inode), data->timestamp); |
5a37f851 | 3432 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); |
4f9838c7 | 3433 | } |
788e7a89 | 3434 | return 0; |
1da177e4 LT |
3435 | } |
3436 | ||
b029bc9b FI |
3437 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3438 | { | |
3439 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3440 | return -EAGAIN; | |
d20581aa BH |
3441 | return data->write_done_cb ? data->write_done_cb(task, data) : |
3442 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
3443 | } |
3444 | ||
5a37f851 TM |
3445 | static |
3446 | bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data *data) | |
a69aef14 | 3447 | { |
5a37f851 TM |
3448 | const struct nfs_pgio_header *hdr = data->header; |
3449 | ||
3450 | /* Don't request attributes for pNFS or O_DIRECT writes */ | |
3451 | if (data->ds_clp != NULL || hdr->dreq != NULL) | |
3452 | return false; | |
3453 | /* Otherwise, request attributes if and only if we don't hold | |
3454 | * a delegation | |
3455 | */ | |
011e2a7f | 3456 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 3457 | } |
a69aef14 | 3458 | |
bdc7f021 | 3459 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3460 | { |
cd841605 | 3461 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
bdc7f021 | 3462 | |
5a37f851 | 3463 | if (!nfs4_write_need_cache_consistency_data(data)) { |
7ffd1064 FI |
3464 | data->args.bitmask = NULL; |
3465 | data->res.fattr = NULL; | |
3466 | } else | |
3467 | data->args.bitmask = server->cache_consistency_bitmask; | |
5a37f851 | 3468 | |
b029bc9b FI |
3469 | if (!data->write_done_cb) |
3470 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3471 | data->res.server = server; |
1da177e4 LT |
3472 | data->timestamp = jiffies; |
3473 | ||
bdc7f021 | 3474 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
9d12b216 | 3475 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3476 | } |
3477 | ||
c6cb80d0 BS |
3478 | static void nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) |
3479 | { | |
d9afbd1b TM |
3480 | nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
3481 | &data->args.seq_args, | |
3482 | &data->res.seq_res, | |
3483 | task); | |
1da177e4 LT |
3484 | } |
3485 | ||
0b7c0153 | 3486 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 | 3487 | { |
d9afbd1b TM |
3488 | nfs4_setup_sequence(NFS_SERVER(data->inode), |
3489 | &data->args.seq_args, | |
3490 | &data->res.seq_res, | |
3491 | task); | |
1da177e4 LT |
3492 | } |
3493 | ||
0b7c0153 | 3494 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 3495 | { |
1da177e4 | 3496 | struct inode *inode = data->inode; |
14516c3a | 3497 | |
9e33bed5 | 3498 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
d00c5d43 | 3499 | rpc_restart_call_prepare(task); |
788e7a89 | 3500 | return -EAGAIN; |
1da177e4 | 3501 | } |
788e7a89 | 3502 | return 0; |
1da177e4 LT |
3503 | } |
3504 | ||
0b7c0153 | 3505 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
3506 | { |
3507 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3508 | return -EAGAIN; | |
0b7c0153 | 3509 | return data->commit_done_cb(task, data); |
5f452431 FI |
3510 | } |
3511 | ||
0b7c0153 | 3512 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 3513 | { |
788e7a89 | 3514 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 3515 | |
0b7c0153 FI |
3516 | if (data->commit_done_cb == NULL) |
3517 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 3518 | data->res.server = server; |
bdc7f021 | 3519 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
9d12b216 | 3520 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3521 | } |
3522 | ||
9bc4e3ca CL |
3523 | struct nfs4_renewdata { |
3524 | struct nfs_client *client; | |
3525 | unsigned long timestamp; | |
3526 | }; | |
3527 | ||
1da177e4 LT |
3528 | /* |
3529 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3530 | * standalone procedure for queueing an asynchronous RENEW. | |
3531 | */ | |
9bc4e3ca | 3532 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3533 | { |
9bc4e3ca CL |
3534 | struct nfs4_renewdata *data = calldata; |
3535 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3536 | |
0851de06 AB |
3537 | if (atomic_read(&clp->cl_count) > 1) |
3538 | nfs4_schedule_state_renewal(clp); | |
3539 | nfs_put_client(clp); | |
9bc4e3ca | 3540 | kfree(data); |
dc96aef9 AB |
3541 | } |
3542 | ||
9bc4e3ca | 3543 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3544 | { |
9bc4e3ca CL |
3545 | struct nfs4_renewdata *data = calldata; |
3546 | struct nfs_client *clp = data->client; | |
3547 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3548 | |
3549 | if (task->tk_status < 0) { | |
95baa25c | 3550 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
3551 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
3552 | return; | |
3553 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 3554 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
3555 | return; |
3556 | } | |
3557 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 3558 | } |
452e9352 | 3559 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3560 | } |
3561 | ||
963d8fe5 TM |
3562 | static const struct rpc_call_ops nfs4_renew_ops = { |
3563 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3564 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3565 | }; |
3566 | ||
2f60ea6b | 3567 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
3568 | { |
3569 | struct rpc_message msg = { | |
3570 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3571 | .rpc_argp = clp, | |
b4454fe1 | 3572 | .rpc_cred = cred, |
1da177e4 | 3573 | }; |
9bc4e3ca | 3574 | struct nfs4_renewdata *data; |
1da177e4 | 3575 | |
2f60ea6b TM |
3576 | if (renew_flags == 0) |
3577 | return 0; | |
0851de06 AB |
3578 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3579 | return -EIO; | |
b569ad34 | 3580 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
3581 | if (data == NULL) |
3582 | return -ENOMEM; | |
3583 | data->client = clp; | |
3584 | data->timestamp = jiffies; | |
1da177e4 | 3585 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, |
9bc4e3ca | 3586 | &nfs4_renew_ops, data); |
1da177e4 LT |
3587 | } |
3588 | ||
8534d4ec | 3589 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3590 | { |
3591 | struct rpc_message msg = { | |
3592 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3593 | .rpc_argp = clp, | |
b4454fe1 | 3594 | .rpc_cred = cred, |
1da177e4 LT |
3595 | }; |
3596 | unsigned long now = jiffies; | |
3597 | int status; | |
3598 | ||
3599 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3600 | if (status < 0) | |
3601 | return status; | |
452e9352 | 3602 | do_renew_lease(clp, now); |
1da177e4 LT |
3603 | return 0; |
3604 | } | |
3605 | ||
aa1870af BF |
3606 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3607 | { | |
3608 | return (server->caps & NFS_CAP_ACLS) | |
3609 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3610 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3611 | } | |
3612 | ||
21f498c2 TM |
3613 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that |
3614 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on | |
aa1870af BF |
3615 | * the stack. |
3616 | */ | |
21f498c2 | 3617 | #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) |
aa1870af | 3618 | |
e9e3d724 NH |
3619 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
3620 | struct page **pages, unsigned int *pgbase) | |
3621 | { | |
3622 | struct page *newpage, **spages; | |
3623 | int rc = 0; | |
3624 | size_t len; | |
3625 | spages = pages; | |
3626 | ||
3627 | do { | |
21f498c2 | 3628 | len = min_t(size_t, PAGE_SIZE, buflen); |
e9e3d724 NH |
3629 | newpage = alloc_page(GFP_KERNEL); |
3630 | ||
3631 | if (newpage == NULL) | |
3632 | goto unwind; | |
3633 | memcpy(page_address(newpage), buf, len); | |
3634 | buf += len; | |
3635 | buflen -= len; | |
3636 | *pages++ = newpage; | |
3637 | rc++; | |
3638 | } while (buflen != 0); | |
3639 | ||
3640 | return rc; | |
3641 | ||
3642 | unwind: | |
3643 | for(; rc > 0; rc--) | |
3644 | __free_page(spages[rc-1]); | |
3645 | return -ENOMEM; | |
3646 | } | |
3647 | ||
e50a1c2e BF |
3648 | struct nfs4_cached_acl { |
3649 | int cached; | |
3650 | size_t len; | |
3e9d4154 | 3651 | char data[0]; |
e50a1c2e BF |
3652 | }; |
3653 | ||
3654 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3655 | { | |
3656 | struct nfs_inode *nfsi = NFS_I(inode); | |
3657 | ||
3658 | spin_lock(&inode->i_lock); | |
3659 | kfree(nfsi->nfs4_acl); | |
3660 | nfsi->nfs4_acl = acl; | |
3661 | spin_unlock(&inode->i_lock); | |
3662 | } | |
3663 | ||
3664 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3665 | { | |
3666 | nfs4_set_cached_acl(inode, NULL); | |
3667 | } | |
3668 | ||
3669 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3670 | { | |
3671 | struct nfs_inode *nfsi = NFS_I(inode); | |
3672 | struct nfs4_cached_acl *acl; | |
3673 | int ret = -ENOENT; | |
3674 | ||
3675 | spin_lock(&inode->i_lock); | |
3676 | acl = nfsi->nfs4_acl; | |
3677 | if (acl == NULL) | |
3678 | goto out; | |
3679 | if (buf == NULL) /* user is just asking for length */ | |
3680 | goto out_len; | |
3681 | if (acl->cached == 0) | |
3682 | goto out; | |
3683 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3684 | if (acl->len > buflen) | |
3685 | goto out; | |
3686 | memcpy(buf, acl->data, acl->len); | |
3687 | out_len: | |
3688 | ret = acl->len; | |
3689 | out: | |
3690 | spin_unlock(&inode->i_lock); | |
3691 | return ret; | |
3692 | } | |
3693 | ||
5794d21e | 3694 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
3695 | { |
3696 | struct nfs4_cached_acl *acl; | |
b291f1b1 | 3697 | size_t buflen = sizeof(*acl) + acl_len; |
e50a1c2e | 3698 | |
1f1ea6c2 | 3699 | if (buflen <= PAGE_SIZE) { |
b291f1b1 | 3700 | acl = kmalloc(buflen, GFP_KERNEL); |
e50a1c2e BF |
3701 | if (acl == NULL) |
3702 | goto out; | |
3703 | acl->cached = 1; | |
5794d21e | 3704 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
3705 | } else { |
3706 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3707 | if (acl == NULL) | |
3708 | goto out; | |
3709 | acl->cached = 0; | |
3710 | } | |
3711 | acl->len = acl_len; | |
3712 | out: | |
3713 | nfs4_set_cached_acl(inode, acl); | |
3714 | } | |
3715 | ||
bf118a34 AA |
3716 | /* |
3717 | * The getxattr API returns the required buffer length when called with a | |
3718 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
3719 | * the required buf. On a NULL buf, we send a page of data to the server | |
3720 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
3721 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
3722 | * the cache. If not so, we throw away the page, and cache the required | |
3723 | * length. The next getxattr call will then produce another round trip to | |
3724 | * the server, this time with the input buf of the required size. | |
3725 | */ | |
16b4289c | 3726 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3727 | { |
bf118a34 | 3728 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
3729 | struct nfs_getaclargs args = { |
3730 | .fh = NFS_FH(inode), | |
3731 | .acl_pages = pages, | |
3732 | .acl_len = buflen, | |
3733 | }; | |
663c79b3 BH |
3734 | struct nfs_getaclres res = { |
3735 | .acl_len = buflen, | |
3736 | }; | |
aa1870af BF |
3737 | struct rpc_message msg = { |
3738 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3739 | .rpc_argp = &args, | |
663c79b3 | 3740 | .rpc_resp = &res, |
aa1870af | 3741 | }; |
21f498c2 TM |
3742 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
3743 | int ret = -ENOMEM, i; | |
aa1870af | 3744 | |
bf118a34 AA |
3745 | /* As long as we're doing a round trip to the server anyway, |
3746 | * let's be prepared for a page of acl data. */ | |
3747 | if (npages == 0) | |
3748 | npages = 1; | |
21f498c2 TM |
3749 | if (npages > ARRAY_SIZE(pages)) |
3750 | return -ERANGE; | |
5a006899 | 3751 | |
bf118a34 AA |
3752 | for (i = 0; i < npages; i++) { |
3753 | pages[i] = alloc_page(GFP_KERNEL); | |
3754 | if (!pages[i]) | |
3755 | goto out_free; | |
e50a1c2e | 3756 | } |
5a006899 SP |
3757 | |
3758 | /* for decoding across pages */ | |
3759 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
3760 | if (!res.acl_scratch) | |
3761 | goto out_free; | |
3762 | ||
bf118a34 AA |
3763 | args.acl_len = npages * PAGE_SIZE; |
3764 | args.acl_pgbase = 0; | |
5a006899 | 3765 | |
de040bec | 3766 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
3767 | __func__, buf, buflen, npages, args.acl_len); |
3768 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
3769 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
3770 | if (ret) |
3771 | goto out_free; | |
bf118a34 | 3772 | |
1f1ea6c2 TM |
3773 | /* Handle the case where the passed-in buffer is too short */ |
3774 | if (res.acl_flags & NFS4_ACL_TRUNC) { | |
3775 | /* Did the user only issue a request for the acl length? */ | |
3776 | if (buf == NULL) | |
3777 | goto out_ok; | |
e50a1c2e | 3778 | ret = -ERANGE; |
1f1ea6c2 | 3779 | goto out_free; |
e50a1c2e | 3780 | } |
1f1ea6c2 TM |
3781 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len); |
3782 | if (buf) | |
3783 | _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len); | |
3784 | out_ok: | |
3785 | ret = res.acl_len; | |
e50a1c2e | 3786 | out_free: |
bf118a34 AA |
3787 | for (i = 0; i < npages; i++) |
3788 | if (pages[i]) | |
3789 | __free_page(pages[i]); | |
331818f1 TM |
3790 | if (res.acl_scratch) |
3791 | __free_page(res.acl_scratch); | |
aa1870af BF |
3792 | return ret; |
3793 | } | |
3794 | ||
16b4289c TM |
3795 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
3796 | { | |
3797 | struct nfs4_exception exception = { }; | |
3798 | ssize_t ret; | |
3799 | do { | |
3800 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
3801 | if (ret >= 0) | |
3802 | break; | |
3803 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
3804 | } while (exception.retry); | |
3805 | return ret; | |
3806 | } | |
3807 | ||
e50a1c2e BF |
3808 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
3809 | { | |
3810 | struct nfs_server *server = NFS_SERVER(inode); | |
3811 | int ret; | |
3812 | ||
3813 | if (!nfs4_server_supports_acls(server)) | |
3814 | return -EOPNOTSUPP; | |
3815 | ret = nfs_revalidate_inode(server, inode); | |
3816 | if (ret < 0) | |
3817 | return ret; | |
08a22b39 AK |
3818 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
3819 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
3820 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
3821 | if (ret != -ENOENT) | |
bf118a34 AA |
3822 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
3823 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
3824 | return ret; |
3825 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
3826 | } | |
3827 | ||
16b4289c | 3828 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
3829 | { |
3830 | struct nfs_server *server = NFS_SERVER(inode); | |
3831 | struct page *pages[NFS4ACL_MAXPAGES]; | |
3832 | struct nfs_setaclargs arg = { | |
3833 | .fh = NFS_FH(inode), | |
3834 | .acl_pages = pages, | |
3835 | .acl_len = buflen, | |
3836 | }; | |
73c403a9 | 3837 | struct nfs_setaclres res; |
4b580ee3 BF |
3838 | struct rpc_message msg = { |
3839 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
3840 | .rpc_argp = &arg, | |
73c403a9 | 3841 | .rpc_resp = &res, |
4b580ee3 | 3842 | }; |
21f498c2 | 3843 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
e9e3d724 | 3844 | int ret, i; |
4b580ee3 BF |
3845 | |
3846 | if (!nfs4_server_supports_acls(server)) | |
3847 | return -EOPNOTSUPP; | |
21f498c2 TM |
3848 | if (npages > ARRAY_SIZE(pages)) |
3849 | return -ERANGE; | |
e9e3d724 NH |
3850 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
3851 | if (i < 0) | |
3852 | return i; | |
57ec14c5 | 3853 | nfs4_inode_return_delegation(inode); |
7c513058 | 3854 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
3855 | |
3856 | /* | |
3857 | * Free each page after tx, so the only ref left is | |
3858 | * held by the network stack | |
3859 | */ | |
3860 | for (; i > 0; i--) | |
3861 | put_page(pages[i-1]); | |
3862 | ||
08a22b39 AK |
3863 | /* |
3864 | * Acl update can result in inode attribute update. | |
3865 | * so mark the attribute cache invalid. | |
3866 | */ | |
3867 | spin_lock(&inode->i_lock); | |
3868 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
3869 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
3870 | nfs_access_zap_cache(inode); |
3871 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
3872 | return ret; |
3873 | } | |
3874 | ||
16b4289c TM |
3875 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
3876 | { | |
3877 | struct nfs4_exception exception = { }; | |
3878 | int err; | |
3879 | do { | |
3880 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3881 | __nfs4_proc_set_acl(inode, buf, buflen), | |
3882 | &exception); | |
3883 | } while (exception.retry); | |
3884 | return err; | |
3885 | } | |
3886 | ||
1da177e4 | 3887 | static int |
aa5190d0 | 3888 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 3889 | { |
aa5190d0 TM |
3890 | struct nfs_client *clp = server->nfs_client; |
3891 | ||
3892 | if (task->tk_status >= 0) | |
1da177e4 LT |
3893 | return 0; |
3894 | switch(task->tk_status) { | |
a1d0b5ee | 3895 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
3896 | case -NFS4ERR_ADMIN_REVOKED: |
3897 | case -NFS4ERR_BAD_STATEID: | |
14977489 TM |
3898 | if (state == NULL) |
3899 | break; | |
3900 | nfs_remove_bad_delegation(state->inode); | |
9e33bed5 TM |
3901 | case -NFS4ERR_OPENMODE: |
3902 | if (state == NULL) | |
3903 | break; | |
0400a6b0 TM |
3904 | nfs4_schedule_stateid_recovery(server, state); |
3905 | goto wait_on_recovery; | |
0ced63d1 TM |
3906 | case -NFS4ERR_EXPIRED: |
3907 | if (state != NULL) | |
3908 | nfs4_schedule_stateid_recovery(server, state); | |
1da177e4 | 3909 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 3910 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
3911 | nfs4_schedule_lease_recovery(clp); |
3912 | goto wait_on_recovery; | |
4745e315 AA |
3913 | #if defined(CONFIG_NFS_V4_1) |
3914 | case -NFS4ERR_BADSESSION: | |
3915 | case -NFS4ERR_BADSLOT: | |
3916 | case -NFS4ERR_BAD_HIGH_SLOT: | |
3917 | case -NFS4ERR_DEADSESSION: | |
3918 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
3919 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
3920 | case -NFS4ERR_SEQ_MISORDERED: | |
3921 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
3922 | task->tk_status); | |
9f594791 | 3923 | nfs4_schedule_session_recovery(clp->cl_session, task->tk_status); |
4745e315 AA |
3924 | task->tk_status = 0; |
3925 | return -EAGAIN; | |
3926 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 3927 | case -NFS4ERR_DELAY: |
aa5190d0 | 3928 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 3929 | case -NFS4ERR_GRACE: |
2c643488 | 3930 | case -EKEYEXPIRED: |
1da177e4 LT |
3931 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
3932 | task->tk_status = 0; | |
3933 | return -EAGAIN; | |
a8a4ae3a | 3934 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
3935 | case -NFS4ERR_OLD_STATEID: |
3936 | task->tk_status = 0; | |
3937 | return -EAGAIN; | |
3938 | } | |
3939 | task->tk_status = nfs4_map_errors(task->tk_status); | |
3940 | return 0; | |
0400a6b0 | 3941 | wait_on_recovery: |
a2c0b9e2 | 3942 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
3943 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
3944 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
3945 | task->tk_status = 0; | |
3946 | return -EAGAIN; | |
1da177e4 LT |
3947 | } |
3948 | ||
f092075d CL |
3949 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
3950 | nfs4_verifier *bootverf) | |
cd93710e CL |
3951 | { |
3952 | __be32 verf[2]; | |
3953 | ||
2c820d9a CL |
3954 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
3955 | /* An impossible timestamp guarantees this value | |
3956 | * will never match a generated boot time. */ | |
3957 | verf[0] = 0; | |
3958 | verf[1] = (__be32)(NSEC_PER_SEC + 1); | |
3959 | } else { | |
f092075d CL |
3960 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
3961 | verf[0] = (__be32)nn->boot_time.tv_sec; | |
3962 | verf[1] = (__be32)nn->boot_time.tv_nsec; | |
2c820d9a | 3963 | } |
cd93710e CL |
3964 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
3965 | } | |
3966 | ||
e984a55a CL |
3967 | static unsigned int |
3968 | nfs4_init_nonuniform_client_string(const struct nfs_client *clp, | |
3969 | char *buf, size_t len) | |
3970 | { | |
3971 | unsigned int result; | |
3972 | ||
3973 | rcu_read_lock(); | |
3974 | result = scnprintf(buf, len, "Linux NFSv4.0 %s/%s %s", | |
3975 | clp->cl_ipaddr, | |
3976 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3977 | RPC_DISPLAY_ADDR), | |
3978 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3979 | RPC_DISPLAY_PROTO)); | |
3980 | rcu_read_unlock(); | |
3981 | return result; | |
3982 | } | |
3983 | ||
3984 | static unsigned int | |
3985 | nfs4_init_uniform_client_string(const struct nfs_client *clp, | |
3986 | char *buf, size_t len) | |
3987 | { | |
6f2ea7f2 CL |
3988 | char *nodename = clp->cl_rpcclient->cl_nodename; |
3989 | ||
3990 | if (nfs4_client_id_uniquifier[0] != '\0') | |
3991 | nodename = nfs4_client_id_uniquifier; | |
e984a55a CL |
3992 | return scnprintf(buf, len, "Linux NFSv%u.%u %s", |
3993 | clp->rpc_ops->version, clp->cl_minorversion, | |
6f2ea7f2 | 3994 | nodename); |
e984a55a CL |
3995 | } |
3996 | ||
6bbb4ae8 CL |
3997 | /** |
3998 | * nfs4_proc_setclientid - Negotiate client ID | |
3999 | * @clp: state data structure | |
4000 | * @program: RPC program for NFSv4 callback service | |
4001 | * @port: IP port number for NFS4 callback service | |
4002 | * @cred: RPC credential to use for this call | |
4003 | * @res: where to place the result | |
4004 | * | |
4005 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4006 | */ | |
bb8b27e5 TM |
4007 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
4008 | unsigned short port, struct rpc_cred *cred, | |
4009 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
4010 | { |
4011 | nfs4_verifier sc_verifier; | |
4012 | struct nfs4_setclientid setclientid = { | |
4013 | .sc_verifier = &sc_verifier, | |
4014 | .sc_prog = program, | |
f4eecd5d | 4015 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
4016 | }; |
4017 | struct rpc_message msg = { | |
4018 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
4019 | .rpc_argp = &setclientid, | |
bb8b27e5 | 4020 | .rpc_resp = res, |
286d7d6a | 4021 | .rpc_cred = cred, |
1da177e4 | 4022 | }; |
6bbb4ae8 | 4023 | int status; |
1da177e4 | 4024 | |
de734831 | 4025 | /* nfs_client_id4 */ |
f092075d | 4026 | nfs4_init_boot_verifier(clp, &sc_verifier); |
e984a55a CL |
4027 | if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags)) |
4028 | setclientid.sc_name_len = | |
4029 | nfs4_init_uniform_client_string(clp, | |
4030 | setclientid.sc_name, | |
4031 | sizeof(setclientid.sc_name)); | |
4032 | else | |
4033 | setclientid.sc_name_len = | |
4034 | nfs4_init_nonuniform_client_string(clp, | |
4035 | setclientid.sc_name, | |
4036 | sizeof(setclientid.sc_name)); | |
de734831 | 4037 | /* cb_client4 */ |
e984a55a | 4038 | rcu_read_lock(); |
de734831 | 4039 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, |
d4d3c507 CL |
4040 | sizeof(setclientid.sc_netid), |
4041 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4042 | RPC_DISPLAY_NETID)); | |
de734831 CL |
4043 | rcu_read_unlock(); |
4044 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, | |
d4d3c507 | 4045 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
4046 | clp->cl_ipaddr, port >> 8, port & 255); |
4047 | ||
6bbb4ae8 CL |
4048 | dprintk("NFS call setclientid auth=%s, '%.*s'\n", |
4049 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4050 | setclientid.sc_name_len, setclientid.sc_name); | |
4051 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
4052 | dprintk("NFS reply setclientid: %d\n", status); | |
4053 | return status; | |
1da177e4 LT |
4054 | } |
4055 | ||
6bbb4ae8 CL |
4056 | /** |
4057 | * nfs4_proc_setclientid_confirm - Confirm client ID | |
4058 | * @clp: state data structure | |
4059 | * @res: result of a previous SETCLIENTID | |
4060 | * @cred: RPC credential to use for this call | |
4061 | * | |
4062 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4063 | */ | |
fd954ae1 | 4064 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
4065 | struct nfs4_setclientid_res *arg, |
4066 | struct rpc_cred *cred) | |
1da177e4 LT |
4067 | { |
4068 | struct nfs_fsinfo fsinfo; | |
4069 | struct rpc_message msg = { | |
4070 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 4071 | .rpc_argp = arg, |
1da177e4 | 4072 | .rpc_resp = &fsinfo, |
286d7d6a | 4073 | .rpc_cred = cred, |
1da177e4 LT |
4074 | }; |
4075 | unsigned long now; | |
4076 | int status; | |
4077 | ||
6bbb4ae8 CL |
4078 | dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", |
4079 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4080 | clp->cl_clientid); | |
1da177e4 | 4081 | now = jiffies; |
1bd714f2 | 4082 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
4083 | if (status == 0) { |
4084 | spin_lock(&clp->cl_lock); | |
4085 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
4086 | clp->cl_last_renewal = now; | |
4087 | spin_unlock(&clp->cl_lock); | |
4088 | } | |
6bbb4ae8 | 4089 | dprintk("NFS reply setclientid_confirm: %d\n", status); |
1da177e4 LT |
4090 | return status; |
4091 | } | |
4092 | ||
fe650407 TM |
4093 | struct nfs4_delegreturndata { |
4094 | struct nfs4_delegreturnargs args; | |
fa178f29 | 4095 | struct nfs4_delegreturnres res; |
fe650407 TM |
4096 | struct nfs_fh fh; |
4097 | nfs4_stateid stateid; | |
26e976a8 | 4098 | unsigned long timestamp; |
fa178f29 | 4099 | struct nfs_fattr fattr; |
fe650407 TM |
4100 | int rpc_status; |
4101 | }; | |
4102 | ||
fe650407 TM |
4103 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
4104 | { | |
4105 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 4106 | |
14516c3a TM |
4107 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4108 | return; | |
938e1010 | 4109 | |
79708861 RL |
4110 | switch (task->tk_status) { |
4111 | case -NFS4ERR_STALE_STATEID: | |
4112 | case -NFS4ERR_EXPIRED: | |
4113 | case 0: | |
fa178f29 | 4114 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
4115 | break; |
4116 | default: | |
4117 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
4118 | -EAGAIN) { | |
d00c5d43 | 4119 | rpc_restart_call_prepare(task); |
79708861 RL |
4120 | return; |
4121 | } | |
4122 | } | |
4123 | data->rpc_status = task->tk_status; | |
fe650407 TM |
4124 | } |
4125 | ||
4126 | static void nfs4_delegreturn_release(void *calldata) | |
4127 | { | |
fe650407 TM |
4128 | kfree(calldata); |
4129 | } | |
4130 | ||
938e1010 AA |
4131 | #if defined(CONFIG_NFS_V4_1) |
4132 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
4133 | { | |
4134 | struct nfs4_delegreturndata *d_data; | |
4135 | ||
4136 | d_data = (struct nfs4_delegreturndata *)data; | |
4137 | ||
d9afbd1b TM |
4138 | nfs4_setup_sequence(d_data->res.server, |
4139 | &d_data->args.seq_args, | |
4140 | &d_data->res.seq_res, | |
4141 | task); | |
938e1010 AA |
4142 | } |
4143 | #endif /* CONFIG_NFS_V4_1 */ | |
4144 | ||
c8d149f3 | 4145 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
4146 | #if defined(CONFIG_NFS_V4_1) |
4147 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
4148 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
4149 | .rpc_call_done = nfs4_delegreturn_done, |
4150 | .rpc_release = nfs4_delegreturn_release, | |
4151 | }; | |
4152 | ||
e6f81075 | 4153 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
4154 | { |
4155 | struct nfs4_delegreturndata *data; | |
fa178f29 | 4156 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 4157 | struct rpc_task *task; |
5138fde0 TM |
4158 | struct rpc_message msg = { |
4159 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
4160 | .rpc_cred = cred, | |
4161 | }; | |
c970aa85 TM |
4162 | struct rpc_task_setup task_setup_data = { |
4163 | .rpc_client = server->client, | |
5138fde0 | 4164 | .rpc_message = &msg, |
c970aa85 TM |
4165 | .callback_ops = &nfs4_delegreturn_ops, |
4166 | .flags = RPC_TASK_ASYNC, | |
4167 | }; | |
e6f81075 | 4168 | int status = 0; |
fe650407 | 4169 | |
8535b2be | 4170 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
4171 | if (data == NULL) |
4172 | return -ENOMEM; | |
9d12b216 | 4173 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
4174 | data->args.fhandle = &data->fh; |
4175 | data->args.stateid = &data->stateid; | |
9e907fec | 4176 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 4177 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 4178 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
4179 | data->res.fattr = &data->fattr; |
4180 | data->res.server = server; | |
5138fde0 | 4181 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 4182 | data->timestamp = jiffies; |
fe650407 TM |
4183 | data->rpc_status = 0; |
4184 | ||
c970aa85 | 4185 | task_setup_data.callback_data = data; |
1174dd1f TM |
4186 | msg.rpc_argp = &data->args; |
4187 | msg.rpc_resp = &data->res; | |
c970aa85 | 4188 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 4189 | if (IS_ERR(task)) |
fe650407 | 4190 | return PTR_ERR(task); |
e6f81075 TM |
4191 | if (!issync) |
4192 | goto out; | |
fe650407 | 4193 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
4194 | if (status != 0) |
4195 | goto out; | |
4196 | status = data->rpc_status; | |
e144cbcc TM |
4197 | if (status == 0) |
4198 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
4199 | else | |
4200 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 4201 | out: |
e6b3c4db | 4202 | rpc_put_task(task); |
fe650407 | 4203 | return status; |
1da177e4 LT |
4204 | } |
4205 | ||
e6f81075 | 4206 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
4207 | { |
4208 | struct nfs_server *server = NFS_SERVER(inode); | |
4209 | struct nfs4_exception exception = { }; | |
4210 | int err; | |
4211 | do { | |
e6f81075 | 4212 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
4213 | switch (err) { |
4214 | case -NFS4ERR_STALE_STATEID: | |
4215 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
4216 | case 0: |
4217 | return 0; | |
4218 | } | |
4219 | err = nfs4_handle_exception(server, err, &exception); | |
4220 | } while (exception.retry); | |
4221 | return err; | |
4222 | } | |
4223 | ||
4224 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
4225 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
4226 | ||
4227 | /* | |
4228 | * sleep, with exponential backoff, and retry the LOCK operation. | |
4229 | */ | |
4230 | static unsigned long | |
4231 | nfs4_set_lock_task_retry(unsigned long timeout) | |
4232 | { | |
d310310c | 4233 | freezable_schedule_timeout_killable(timeout); |
1da177e4 LT |
4234 | timeout <<= 1; |
4235 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
4236 | return NFS4_LOCK_MAXTIMEOUT; | |
4237 | return timeout; | |
4238 | } | |
4239 | ||
1da177e4 LT |
4240 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4241 | { | |
4242 | struct inode *inode = state->inode; | |
4243 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 4244 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 4245 | struct nfs_lockt_args arg = { |
1da177e4 | 4246 | .fh = NFS_FH(inode), |
911d1aaf | 4247 | .fl = request, |
1da177e4 | 4248 | }; |
911d1aaf TM |
4249 | struct nfs_lockt_res res = { |
4250 | .denied = request, | |
1da177e4 LT |
4251 | }; |
4252 | struct rpc_message msg = { | |
4253 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
4254 | .rpc_argp = &arg, | |
4255 | .rpc_resp = &res, | |
4256 | .rpc_cred = state->owner->so_cred, | |
4257 | }; | |
1da177e4 LT |
4258 | struct nfs4_lock_state *lsp; |
4259 | int status; | |
4260 | ||
911d1aaf | 4261 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
4262 | status = nfs4_set_lock_state(state, request); |
4263 | if (status != 0) | |
4264 | goto out; | |
4265 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 4266 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4267 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 4268 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
4269 | switch (status) { |
4270 | case 0: | |
4271 | request->fl_type = F_UNLCK; | |
4272 | break; | |
4273 | case -NFS4ERR_DENIED: | |
4274 | status = 0; | |
1da177e4 | 4275 | } |
70cc6487 | 4276 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 4277 | out: |
1da177e4 LT |
4278 | return status; |
4279 | } | |
4280 | ||
4281 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4282 | { | |
4283 | struct nfs4_exception exception = { }; | |
4284 | int err; | |
4285 | ||
4286 | do { | |
4287 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
4288 | _nfs4_proc_getlk(state, cmd, request), | |
4289 | &exception); | |
4290 | } while (exception.retry); | |
4291 | return err; | |
4292 | } | |
4293 | ||
4294 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
4295 | { | |
4296 | int res = 0; | |
4297 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
4298 | case FL_POSIX: | |
4299 | res = posix_lock_file_wait(file, fl); | |
4300 | break; | |
4301 | case FL_FLOCK: | |
4302 | res = flock_lock_file_wait(file, fl); | |
4303 | break; | |
4304 | default: | |
4305 | BUG(); | |
4306 | } | |
1da177e4 LT |
4307 | return res; |
4308 | } | |
4309 | ||
faf5f49c | 4310 | struct nfs4_unlockdata { |
911d1aaf TM |
4311 | struct nfs_locku_args arg; |
4312 | struct nfs_locku_res res; | |
faf5f49c TM |
4313 | struct nfs4_lock_state *lsp; |
4314 | struct nfs_open_context *ctx; | |
911d1aaf TM |
4315 | struct file_lock fl; |
4316 | const struct nfs_server *server; | |
26e976a8 | 4317 | unsigned long timestamp; |
faf5f49c TM |
4318 | }; |
4319 | ||
911d1aaf TM |
4320 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
4321 | struct nfs_open_context *ctx, | |
4322 | struct nfs4_lock_state *lsp, | |
4323 | struct nfs_seqid *seqid) | |
4324 | { | |
4325 | struct nfs4_unlockdata *p; | |
4326 | struct inode *inode = lsp->ls_state->inode; | |
4327 | ||
8535b2be | 4328 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
4329 | if (p == NULL) |
4330 | return NULL; | |
4331 | p->arg.fh = NFS_FH(inode); | |
4332 | p->arg.fl = &p->fl; | |
4333 | p->arg.seqid = seqid; | |
c1d51931 | 4334 | p->res.seqid = seqid; |
911d1aaf TM |
4335 | p->arg.stateid = &lsp->ls_stateid; |
4336 | p->lsp = lsp; | |
4337 | atomic_inc(&lsp->ls_count); | |
4338 | /* Ensure we don't close file until we're done freeing locks! */ | |
4339 | p->ctx = get_nfs_open_context(ctx); | |
4340 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4341 | p->server = NFS_SERVER(inode); | |
4342 | return p; | |
4343 | } | |
4344 | ||
06f814a3 | 4345 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 4346 | { |
963d8fe5 | 4347 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 4348 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
4349 | nfs4_put_lock_state(calldata->lsp); |
4350 | put_nfs_open_context(calldata->ctx); | |
4351 | kfree(calldata); | |
faf5f49c TM |
4352 | } |
4353 | ||
963d8fe5 | 4354 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 4355 | { |
963d8fe5 | 4356 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4357 | |
14516c3a TM |
4358 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
4359 | return; | |
faf5f49c TM |
4360 | switch (task->tk_status) { |
4361 | case 0: | |
f597c537 TM |
4362 | nfs4_stateid_copy(&calldata->lsp->ls_stateid, |
4363 | &calldata->res.stateid); | |
26e976a8 | 4364 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 4365 | break; |
9e33bed5 TM |
4366 | case -NFS4ERR_BAD_STATEID: |
4367 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
4368 | case -NFS4ERR_STALE_STATEID: |
4369 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
4370 | break; |
4371 | default: | |
9e33bed5 | 4372 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
d00c5d43 | 4373 | rpc_restart_call_prepare(task); |
faf5f49c | 4374 | } |
2b1bc308 | 4375 | nfs_release_seqid(calldata->arg.seqid); |
faf5f49c TM |
4376 | } |
4377 | ||
4ce70ada | 4378 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 4379 | { |
4ce70ada | 4380 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4381 | |
911d1aaf | 4382 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c | 4383 | return; |
795a88c9 | 4384 | if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) { |
963d8fe5 TM |
4385 | /* Note: exit _without_ running nfs4_locku_done */ |
4386 | task->tk_action = NULL; | |
faf5f49c TM |
4387 | return; |
4388 | } | |
26e976a8 | 4389 | calldata->timestamp = jiffies; |
035168ab | 4390 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 4391 | &calldata->arg.seq_args, |
2240a9e2 TM |
4392 | &calldata->res.seq_res, |
4393 | task) != 0) | |
4394 | nfs_release_seqid(calldata->arg.seqid); | |
faf5f49c TM |
4395 | } |
4396 | ||
963d8fe5 | 4397 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 4398 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 4399 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 4400 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
4401 | }; |
4402 | ||
a5d16a4d TM |
4403 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
4404 | struct nfs_open_context *ctx, | |
4405 | struct nfs4_lock_state *lsp, | |
4406 | struct nfs_seqid *seqid) | |
4407 | { | |
4408 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
4409 | struct rpc_message msg = { |
4410 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
4411 | .rpc_cred = ctx->cred, | |
4412 | }; | |
c970aa85 TM |
4413 | struct rpc_task_setup task_setup_data = { |
4414 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 4415 | .rpc_message = &msg, |
c970aa85 | 4416 | .callback_ops = &nfs4_locku_ops, |
101070ca | 4417 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4418 | .flags = RPC_TASK_ASYNC, |
4419 | }; | |
a5d16a4d | 4420 | |
137d6aca FF |
4421 | /* Ensure this is an unlock - when canceling a lock, the |
4422 | * canceled lock is passed in, and it won't be an unlock. | |
4423 | */ | |
4424 | fl->fl_type = F_UNLCK; | |
4425 | ||
a5d16a4d TM |
4426 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
4427 | if (data == NULL) { | |
4428 | nfs_free_seqid(seqid); | |
4429 | return ERR_PTR(-ENOMEM); | |
4430 | } | |
4431 | ||
9d12b216 | 4432 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4433 | msg.rpc_argp = &data->arg; |
4434 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4435 | task_setup_data.callback_data = data; |
4436 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
4437 | } |
4438 | ||
faf5f49c TM |
4439 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
4440 | { | |
19e03c57 | 4441 | struct nfs_inode *nfsi = NFS_I(state->inode); |
911d1aaf | 4442 | struct nfs_seqid *seqid; |
1da177e4 | 4443 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
4444 | struct rpc_task *task; |
4445 | int status = 0; | |
536ff0f8 | 4446 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 4447 | |
8d0a8a9d | 4448 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
4449 | /* Unlock _before_ we do the RPC call */ |
4450 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
4451 | down_read(&nfsi->rwsem); |
4452 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
4453 | up_read(&nfsi->rwsem); | |
9b073574 | 4454 | goto out; |
19e03c57 TM |
4455 | } |
4456 | up_read(&nfsi->rwsem); | |
8d0a8a9d | 4457 | if (status != 0) |
9b073574 TM |
4458 | goto out; |
4459 | /* Is this a delegated lock? */ | |
4460 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
4461 | goto out; | |
8d0a8a9d | 4462 | lsp = request->fl_u.nfs4_fl.owner; |
8535b2be | 4463 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 4464 | status = -ENOMEM; |
911d1aaf | 4465 | if (seqid == NULL) |
9b073574 | 4466 | goto out; |
cd3758e3 | 4467 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
4468 | status = PTR_ERR(task); |
4469 | if (IS_ERR(task)) | |
9b073574 | 4470 | goto out; |
a5d16a4d | 4471 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 4472 | rpc_put_task(task); |
9b073574 | 4473 | out: |
536ff0f8 | 4474 | request->fl_flags = fl_flags; |
1da177e4 LT |
4475 | return status; |
4476 | } | |
4477 | ||
a5d16a4d TM |
4478 | struct nfs4_lockdata { |
4479 | struct nfs_lock_args arg; | |
4480 | struct nfs_lock_res res; | |
4481 | struct nfs4_lock_state *lsp; | |
4482 | struct nfs_open_context *ctx; | |
4483 | struct file_lock fl; | |
26e976a8 | 4484 | unsigned long timestamp; |
a5d16a4d TM |
4485 | int rpc_status; |
4486 | int cancelled; | |
66179efe | 4487 | struct nfs_server *server; |
a5d16a4d TM |
4488 | }; |
4489 | ||
4490 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
4491 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
4492 | gfp_t gfp_mask) | |
1da177e4 | 4493 | { |
a5d16a4d TM |
4494 | struct nfs4_lockdata *p; |
4495 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 4496 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 4497 | |
8535b2be | 4498 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
4499 | if (p == NULL) |
4500 | return NULL; | |
4501 | ||
4502 | p->arg.fh = NFS_FH(inode); | |
4503 | p->arg.fl = &p->fl; | |
8535b2be | 4504 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4505 | if (p->arg.open_seqid == NULL) |
4506 | goto out_free; | |
8535b2be | 4507 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4508 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4509 | goto out_free_seqid; |
a5d16a4d | 4510 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4511 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 4512 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4513 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 4514 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4515 | p->lsp = lsp; |
66179efe | 4516 | p->server = server; |
a5d16a4d TM |
4517 | atomic_inc(&lsp->ls_count); |
4518 | p->ctx = get_nfs_open_context(ctx); | |
4519 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4520 | return p; | |
2f74c0a0 TM |
4521 | out_free_seqid: |
4522 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4523 | out_free: |
4524 | kfree(p); | |
4525 | return NULL; | |
4526 | } | |
4527 | ||
4528 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4529 | { | |
4530 | struct nfs4_lockdata *data = calldata; | |
4531 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4532 | |
3110ff80 | 4533 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
4534 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
4535 | return; | |
a5d16a4d TM |
4536 | /* Do we need to do an open_to_lock_owner? */ |
4537 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
8fe72bac | 4538 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) { |
2240a9e2 | 4539 | goto out_release_lock_seqid; |
8fe72bac | 4540 | } |
a5d16a4d TM |
4541 | data->arg.open_stateid = &state->stateid; |
4542 | data->arg.new_lock_owner = 1; | |
c1d51931 | 4543 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4544 | } else |
4545 | data->arg.new_lock_owner = 0; | |
26e976a8 | 4546 | data->timestamp = jiffies; |
035168ab TM |
4547 | if (nfs4_setup_sequence(data->server, |
4548 | &data->arg.seq_args, | |
2240a9e2 | 4549 | &data->res.seq_res, |
d9afbd1b | 4550 | task) == 0) |
66179efe | 4551 | return; |
2240a9e2 TM |
4552 | nfs_release_seqid(data->arg.open_seqid); |
4553 | out_release_lock_seqid: | |
4554 | nfs_release_seqid(data->arg.lock_seqid); | |
8fe72bac | 4555 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
b257957e AB |
4556 | } |
4557 | ||
a5d16a4d TM |
4558 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4559 | { | |
4560 | struct nfs4_lockdata *data = calldata; | |
4561 | ||
3110ff80 | 4562 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4563 | |
14516c3a TM |
4564 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4565 | return; | |
66179efe | 4566 | |
a5d16a4d | 4567 | data->rpc_status = task->tk_status; |
a5d16a4d | 4568 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4569 | if (data->rpc_status == 0) |
4570 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4571 | else | |
4572 | goto out; | |
4573 | } | |
4574 | if (data->rpc_status == 0) { | |
f597c537 | 4575 | nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid); |
795a88c9 | 4576 | set_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags); |
3d4ff43d | 4577 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 4578 | } |
a5d16a4d | 4579 | out: |
3110ff80 | 4580 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4581 | } |
4582 | ||
4583 | static void nfs4_lock_release(void *calldata) | |
4584 | { | |
4585 | struct nfs4_lockdata *data = calldata; | |
4586 | ||
3110ff80 | 4587 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4588 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4589 | if (data->cancelled != 0) { |
4590 | struct rpc_task *task; | |
4591 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4592 | data->arg.lock_seqid); | |
4593 | if (!IS_ERR(task)) | |
bf294b41 | 4594 | rpc_put_task_async(task); |
3110ff80 | 4595 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4596 | } else |
4597 | nfs_free_seqid(data->arg.lock_seqid); | |
4598 | nfs4_put_lock_state(data->lsp); | |
4599 | put_nfs_open_context(data->ctx); | |
4600 | kfree(data); | |
3110ff80 | 4601 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4602 | } |
4603 | ||
4604 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4605 | .rpc_call_prepare = nfs4_lock_prepare, | |
4606 | .rpc_call_done = nfs4_lock_done, | |
4607 | .rpc_release = nfs4_lock_release, | |
4608 | }; | |
4609 | ||
2bee72a6 TM |
4610 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4611 | { | |
2bee72a6 TM |
4612 | switch (error) { |
4613 | case -NFS4ERR_ADMIN_REVOKED: | |
4614 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 4615 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 | 4616 | if (new_lock_owner != 0 || |
795a88c9 | 4617 | test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0) |
ecac799a | 4618 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
4619 | break; |
4620 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 4621 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
4622 | case -NFS4ERR_EXPIRED: |
4623 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
4624 | }; |
4625 | } | |
4626 | ||
afe6c27c | 4627 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4628 | { |
4629 | struct nfs4_lockdata *data; | |
4630 | struct rpc_task *task; | |
5138fde0 TM |
4631 | struct rpc_message msg = { |
4632 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4633 | .rpc_cred = state->owner->so_cred, | |
4634 | }; | |
c970aa85 TM |
4635 | struct rpc_task_setup task_setup_data = { |
4636 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4637 | .rpc_message = &msg, |
c970aa85 | 4638 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4639 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4640 | .flags = RPC_TASK_ASYNC, |
4641 | }; | |
a5d16a4d TM |
4642 | int ret; |
4643 | ||
3110ff80 | 4644 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4645 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4646 | fl->fl_u.nfs4_fl.owner, |
4647 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4648 | if (data == NULL) |
4649 | return -ENOMEM; | |
4650 | if (IS_SETLKW(cmd)) | |
4651 | data->arg.block = 1; | |
9d12b216 | 4652 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4653 | msg.rpc_argp = &data->arg; |
4654 | msg.rpc_resp = &data->res; | |
c970aa85 | 4655 | task_setup_data.callback_data = data; |
8fe72bac TM |
4656 | if (recovery_type > NFS_LOCK_NEW) { |
4657 | if (recovery_type == NFS_LOCK_RECLAIM) | |
4658 | data->arg.reclaim = NFS_LOCK_RECLAIM; | |
4659 | nfs4_set_sequence_privileged(&data->arg.seq_args); | |
4660 | } | |
c970aa85 | 4661 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 4662 | if (IS_ERR(task)) |
a5d16a4d | 4663 | return PTR_ERR(task); |
a5d16a4d TM |
4664 | ret = nfs4_wait_for_completion_rpc_task(task); |
4665 | if (ret == 0) { | |
4666 | ret = data->rpc_status; | |
2bee72a6 TM |
4667 | if (ret) |
4668 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4669 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4670 | } else |
4671 | data->cancelled = 1; | |
e6b3c4db | 4672 | rpc_put_task(task); |
3110ff80 | 4673 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4674 | return ret; |
1da177e4 LT |
4675 | } |
4676 | ||
4677 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4678 | { | |
202b50dc | 4679 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4680 | struct nfs4_exception exception = { |
4681 | .inode = state->inode, | |
4682 | }; | |
202b50dc TM |
4683 | int err; |
4684 | ||
4685 | do { | |
42a2d13e TM |
4686 | /* Cache the lock if possible... */ |
4687 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4688 | return 0; | |
afe6c27c | 4689 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 4690 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
4691 | break; |
4692 | nfs4_handle_exception(server, err, &exception); | |
4693 | } while (exception.retry); | |
4694 | return err; | |
1da177e4 LT |
4695 | } |
4696 | ||
4697 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4698 | { | |
202b50dc | 4699 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4700 | struct nfs4_exception exception = { |
4701 | .inode = state->inode, | |
4702 | }; | |
202b50dc TM |
4703 | int err; |
4704 | ||
6bfc93ef TM |
4705 | err = nfs4_set_lock_state(state, request); |
4706 | if (err != 0) | |
4707 | return err; | |
202b50dc | 4708 | do { |
42a2d13e TM |
4709 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4710 | return 0; | |
afe6c27c | 4711 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
4712 | switch (err) { |
4713 | default: | |
4714 | goto out; | |
4715 | case -NFS4ERR_GRACE: | |
4716 | case -NFS4ERR_DELAY: | |
4717 | nfs4_handle_exception(server, err, &exception); | |
4718 | err = 0; | |
4719 | } | |
202b50dc | 4720 | } while (exception.retry); |
a9ed2e25 | 4721 | out: |
202b50dc | 4722 | return err; |
1da177e4 LT |
4723 | } |
4724 | ||
f062eb6c | 4725 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd CL |
4726 | /** |
4727 | * nfs41_check_expired_locks - possibly free a lock stateid | |
4728 | * | |
4729 | * @state: NFSv4 state for an inode | |
4730 | * | |
4731 | * Returns NFS_OK if recovery for this stateid is now finished. | |
4732 | * Otherwise a negative NFS4ERR value is returned. | |
4733 | */ | |
b01dd1d8 | 4734 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 4735 | { |
eb64cf96 | 4736 | int status, ret = -NFS4ERR_BAD_STATEID; |
b01dd1d8 | 4737 | struct nfs4_lock_state *lsp; |
f062eb6c BS |
4738 | struct nfs_server *server = NFS_SERVER(state->inode); |
4739 | ||
b01dd1d8 | 4740 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
795a88c9 | 4741 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { |
b01dd1d8 BS |
4742 | status = nfs41_test_stateid(server, &lsp->ls_stateid); |
4743 | if (status != NFS_OK) { | |
3e60ffdd CL |
4744 | /* Free the stateid unless the server |
4745 | * informs us the stateid is unrecognized. */ | |
89af2739 CL |
4746 | if (status != -NFS4ERR_BAD_STATEID) |
4747 | nfs41_free_stateid(server, | |
4748 | &lsp->ls_stateid); | |
795a88c9 | 4749 | clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); |
b01dd1d8 BS |
4750 | ret = status; |
4751 | } | |
4752 | } | |
4753 | }; | |
4754 | ||
4755 | return ret; | |
4756 | } | |
4757 | ||
4758 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4759 | { | |
4760 | int status = NFS_OK; | |
4761 | ||
4762 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
4763 | status = nfs41_check_expired_locks(state); | |
eb64cf96 CL |
4764 | if (status != NFS_OK) |
4765 | status = nfs4_lock_expired(state, request); | |
4766 | return status; | |
f062eb6c BS |
4767 | } |
4768 | #endif | |
4769 | ||
1da177e4 LT |
4770 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4771 | { | |
19e03c57 | 4772 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 4773 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 4774 | int status = -ENOLCK; |
1da177e4 | 4775 | |
8e469ebd TM |
4776 | if ((fl_flags & FL_POSIX) && |
4777 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
4778 | goto out; | |
6bfc93ef | 4779 | /* Is this a delegated open? */ |
6bfc93ef TM |
4780 | status = nfs4_set_lock_state(state, request); |
4781 | if (status != 0) | |
4782 | goto out; | |
01c3b861 TM |
4783 | request->fl_flags |= FL_ACCESS; |
4784 | status = do_vfs_lock(request->fl_file, request); | |
4785 | if (status < 0) | |
4786 | goto out; | |
19e03c57 | 4787 | down_read(&nfsi->rwsem); |
01c3b861 | 4788 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 4789 | /* Yes: cache locks! */ |
01c3b861 | 4790 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
4791 | request->fl_flags = fl_flags & ~FL_SLEEP; |
4792 | status = do_vfs_lock(request->fl_file, request); | |
4793 | goto out_unlock; | |
01c3b861 | 4794 | } |
afe6c27c | 4795 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 4796 | if (status != 0) |
01c3b861 | 4797 | goto out_unlock; |
6bfc93ef | 4798 | /* Note: we always want to sleep here! */ |
01c3b861 | 4799 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 4800 | if (do_vfs_lock(request->fl_file, request) < 0) |
a030889a WAA |
4801 | printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " |
4802 | "manager!\n", __func__); | |
01c3b861 | 4803 | out_unlock: |
19e03c57 | 4804 | up_read(&nfsi->rwsem); |
01c3b861 TM |
4805 | out: |
4806 | request->fl_flags = fl_flags; | |
1da177e4 LT |
4807 | return status; |
4808 | } | |
4809 | ||
4810 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4811 | { | |
a1d0b5ee TM |
4812 | struct nfs4_exception exception = { |
4813 | .state = state, | |
05ffe24f | 4814 | .inode = state->inode, |
a1d0b5ee | 4815 | }; |
1da177e4 LT |
4816 | int err; |
4817 | ||
4818 | do { | |
965b5d67 TM |
4819 | err = _nfs4_proc_setlk(state, cmd, request); |
4820 | if (err == -NFS4ERR_DENIED) | |
4821 | err = -EAGAIN; | |
1da177e4 | 4822 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 4823 | err, &exception); |
1da177e4 LT |
4824 | } while (exception.retry); |
4825 | return err; | |
4826 | } | |
4827 | ||
4828 | static int | |
4829 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
4830 | { | |
4831 | struct nfs_open_context *ctx; | |
4832 | struct nfs4_state *state; | |
4833 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
4834 | int status; | |
4835 | ||
4836 | /* verify open state */ | |
cd3758e3 | 4837 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
4838 | state = ctx->state; |
4839 | ||
4840 | if (request->fl_start < 0 || request->fl_end < 0) | |
4841 | return -EINVAL; | |
4842 | ||
d953126a TM |
4843 | if (IS_GETLK(cmd)) { |
4844 | if (state != NULL) | |
4845 | return nfs4_proc_getlk(state, F_GETLK, request); | |
4846 | return 0; | |
4847 | } | |
1da177e4 LT |
4848 | |
4849 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
4850 | return -EINVAL; | |
4851 | ||
d953126a TM |
4852 | if (request->fl_type == F_UNLCK) { |
4853 | if (state != NULL) | |
4854 | return nfs4_proc_unlck(state, cmd, request); | |
4855 | return 0; | |
4856 | } | |
1da177e4 | 4857 | |
d953126a TM |
4858 | if (state == NULL) |
4859 | return -ENOLCK; | |
55725513 TM |
4860 | /* |
4861 | * Don't rely on the VFS having checked the file open mode, | |
4862 | * since it won't do this for flock() locks. | |
4863 | */ | |
f44106e2 | 4864 | switch (request->fl_type) { |
55725513 TM |
4865 | case F_RDLCK: |
4866 | if (!(filp->f_mode & FMODE_READ)) | |
4867 | return -EBADF; | |
4868 | break; | |
4869 | case F_WRLCK: | |
4870 | if (!(filp->f_mode & FMODE_WRITE)) | |
4871 | return -EBADF; | |
4872 | } | |
4873 | ||
1da177e4 LT |
4874 | do { |
4875 | status = nfs4_proc_setlk(state, cmd, request); | |
4876 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
4877 | break; | |
4878 | timeout = nfs4_set_lock_task_retry(timeout); | |
4879 | status = -ERESTARTSYS; | |
4880 | if (signalled()) | |
4881 | break; | |
4882 | } while(status < 0); | |
1da177e4 LT |
4883 | return status; |
4884 | } | |
4885 | ||
888e694c TM |
4886 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
4887 | { | |
4888 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4889 | struct nfs4_exception exception = { }; | |
4890 | int err; | |
4891 | ||
4892 | err = nfs4_set_lock_state(state, fl); | |
4893 | if (err != 0) | |
4894 | goto out; | |
4895 | do { | |
afe6c27c | 4896 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
d5122201 TM |
4897 | switch (err) { |
4898 | default: | |
a030889a WAA |
4899 | printk(KERN_ERR "NFS: %s: unhandled error " |
4900 | "%d.\n", __func__, err); | |
d5122201 | 4901 | case 0: |
965b5d67 | 4902 | case -ESTALE: |
d5122201 TM |
4903 | goto out; |
4904 | case -NFS4ERR_EXPIRED: | |
0ced63d1 | 4905 | nfs4_schedule_stateid_recovery(server, state); |
d5122201 | 4906 | case -NFS4ERR_STALE_CLIENTID: |
965b5d67 | 4907 | case -NFS4ERR_STALE_STATEID: |
0400a6b0 TM |
4908 | nfs4_schedule_lease_recovery(server->nfs_client); |
4909 | goto out; | |
74e7bb73 RL |
4910 | case -NFS4ERR_BADSESSION: |
4911 | case -NFS4ERR_BADSLOT: | |
4912 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4913 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4914 | case -NFS4ERR_DEADSESSION: | |
9f594791 | 4915 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); |
d5122201 | 4916 | goto out; |
965b5d67 TM |
4917 | case -ERESTARTSYS: |
4918 | /* | |
4919 | * The show must go on: exit, but mark the | |
4920 | * stateid as needing recovery. | |
4921 | */ | |
a1d0b5ee | 4922 | case -NFS4ERR_DELEG_REVOKED: |
965b5d67 TM |
4923 | case -NFS4ERR_ADMIN_REVOKED: |
4924 | case -NFS4ERR_BAD_STATEID: | |
4925 | case -NFS4ERR_OPENMODE: | |
0400a6b0 | 4926 | nfs4_schedule_stateid_recovery(server, state); |
965b5d67 TM |
4927 | err = 0; |
4928 | goto out; | |
168667c4 TM |
4929 | case -EKEYEXPIRED: |
4930 | /* | |
4931 | * User RPCSEC_GSS context has expired. | |
4932 | * We cannot recover this stateid now, so | |
4933 | * skip it and allow recovery thread to | |
4934 | * proceed. | |
4935 | */ | |
4936 | err = 0; | |
4937 | goto out; | |
965b5d67 TM |
4938 | case -ENOMEM: |
4939 | case -NFS4ERR_DENIED: | |
4940 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
4941 | err = 0; | |
4942 | goto out; | |
d5122201 TM |
4943 | case -NFS4ERR_DELAY: |
4944 | break; | |
4945 | } | |
888e694c TM |
4946 | err = nfs4_handle_exception(server, err, &exception); |
4947 | } while (exception.retry); | |
4948 | out: | |
4949 | return err; | |
4950 | } | |
6b3b5496 | 4951 | |
cf470c3e TM |
4952 | struct nfs_release_lockowner_data { |
4953 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 4954 | struct nfs_server *server; |
cf470c3e TM |
4955 | struct nfs_release_lockowner_args args; |
4956 | }; | |
4957 | ||
d3c7b7cc TM |
4958 | static void nfs4_release_lockowner_release(void *calldata) |
4959 | { | |
cf470c3e | 4960 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 4961 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
4962 | kfree(calldata); |
4963 | } | |
4964 | ||
17280175 | 4965 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
d3c7b7cc TM |
4966 | .rpc_release = nfs4_release_lockowner_release, |
4967 | }; | |
4968 | ||
cf470c3e | 4969 | int nfs4_release_lockowner(struct nfs4_lock_state *lsp) |
d3c7b7cc TM |
4970 | { |
4971 | struct nfs_server *server = lsp->ls_state->owner->so_server; | |
cf470c3e | 4972 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
4973 | struct rpc_message msg = { |
4974 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
4975 | }; | |
4976 | ||
4977 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
cf470c3e TM |
4978 | return -EINVAL; |
4979 | data = kmalloc(sizeof(*data), GFP_NOFS); | |
4980 | if (!data) | |
4981 | return -ENOMEM; | |
4982 | data->lsp = lsp; | |
5ae67c4f | 4983 | data->server = server; |
cf470c3e TM |
4984 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
4985 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
4986 | data->args.lock_owner.s_dev = server->s_dev; | |
4987 | msg.rpc_argp = &data->args; | |
4988 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); | |
4989 | return 0; | |
d3c7b7cc TM |
4990 | } |
4991 | ||
aa1870af BF |
4992 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
4993 | ||
64c2ce8b AK |
4994 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
4995 | const void *buf, size_t buflen, | |
4996 | int flags, int type) | |
6b3b5496 | 4997 | { |
64c2ce8b AK |
4998 | if (strcmp(key, "") != 0) |
4999 | return -EINVAL; | |
4b580ee3 | 5000 | |
64c2ce8b | 5001 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5002 | } |
5003 | ||
64c2ce8b AK |
5004 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
5005 | void *buf, size_t buflen, int type) | |
6b3b5496 | 5006 | { |
64c2ce8b AK |
5007 | if (strcmp(key, "") != 0) |
5008 | return -EINVAL; | |
aa1870af | 5009 | |
64c2ce8b | 5010 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5011 | } |
5012 | ||
64c2ce8b AK |
5013 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
5014 | size_t list_len, const char *name, | |
5015 | size_t name_len, int type) | |
6b3b5496 | 5016 | { |
64c2ce8b | 5017 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 5018 | |
096455a2 BF |
5019 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
5020 | return 0; | |
64c2ce8b AK |
5021 | |
5022 | if (list && len <= list_len) | |
5023 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 5024 | return len; |
6b3b5496 BF |
5025 | } |
5026 | ||
533eb461 AA |
5027 | /* |
5028 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
5029 | */ | |
69aaaae1 TM |
5030 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
5031 | { | |
533eb461 AA |
5032 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
5033 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
5034 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 5035 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
5036 | return; |
5037 | ||
5038 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 5039 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
5040 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
5041 | fattr->nlink = 2; | |
5042 | } | |
5043 | ||
f05d147f BS |
5044 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5045 | const struct qstr *name, | |
5046 | struct nfs4_fs_locations *fs_locations, | |
5047 | struct page *page) | |
683b57b4 TM |
5048 | { |
5049 | struct nfs_server *server = NFS_SERVER(dir); | |
5050 | u32 bitmask[2] = { | |
361e624f | 5051 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
5052 | }; |
5053 | struct nfs4_fs_locations_arg args = { | |
5054 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 5055 | .name = name, |
683b57b4 TM |
5056 | .page = page, |
5057 | .bitmask = bitmask, | |
5058 | }; | |
22958463 BH |
5059 | struct nfs4_fs_locations_res res = { |
5060 | .fs_locations = fs_locations, | |
5061 | }; | |
683b57b4 TM |
5062 | struct rpc_message msg = { |
5063 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
5064 | .rpc_argp = &args, | |
22958463 | 5065 | .rpc_resp = &res, |
683b57b4 TM |
5066 | }; |
5067 | int status; | |
5068 | ||
3110ff80 | 5069 | dprintk("%s: start\n", __func__); |
533eb461 AA |
5070 | |
5071 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
5072 | * is not supported */ | |
5073 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
5074 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
5075 | else | |
5076 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
5077 | ||
c228fd3a | 5078 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 5079 | fs_locations->server = server; |
830b8e33 | 5080 | fs_locations->nlocations = 0; |
f05d147f | 5081 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 5082 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
5083 | return status; |
5084 | } | |
5085 | ||
f05d147f BS |
5086 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5087 | const struct qstr *name, | |
5088 | struct nfs4_fs_locations *fs_locations, | |
5089 | struct page *page) | |
db0a9593 BS |
5090 | { |
5091 | struct nfs4_exception exception = { }; | |
5092 | int err; | |
5093 | do { | |
5094 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
f05d147f | 5095 | _nfs4_proc_fs_locations(client, dir, name, fs_locations, page), |
db0a9593 BS |
5096 | &exception); |
5097 | } while (exception.retry); | |
5098 | return err; | |
5099 | } | |
5100 | ||
5a5ea0d4 BS |
5101 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) |
5102 | { | |
5103 | int status; | |
5104 | struct nfs4_secinfo_arg args = { | |
5105 | .dir_fh = NFS_FH(dir), | |
5106 | .name = name, | |
5107 | }; | |
5108 | struct nfs4_secinfo_res res = { | |
5109 | .flavors = flavors, | |
5110 | }; | |
5111 | struct rpc_message msg = { | |
5112 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
5113 | .rpc_argp = &args, | |
5114 | .rpc_resp = &res, | |
5115 | }; | |
5116 | ||
5117 | dprintk("NFS call secinfo %s\n", name->name); | |
5118 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); | |
5119 | dprintk("NFS reply secinfo: %d\n", status); | |
5120 | return status; | |
5121 | } | |
5122 | ||
72de53ec BS |
5123 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
5124 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
5125 | { |
5126 | struct nfs4_exception exception = { }; | |
5127 | int err; | |
5128 | do { | |
5129 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
5130 | _nfs4_proc_secinfo(dir, name, flavors), | |
5131 | &exception); | |
5132 | } while (exception.retry); | |
5133 | return err; | |
5134 | } | |
5135 | ||
557134a3 | 5136 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
5137 | /* |
5138 | * Check the exchange flags returned by the server for invalid flags, having | |
5139 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
5140 | * DS flags set. | |
5141 | */ | |
5142 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
5143 | { | |
5144 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
5145 | goto out_inval; | |
5146 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
5147 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
5148 | goto out_inval; | |
5149 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
5150 | goto out_inval; | |
5151 | return NFS_OK; | |
5152 | out_inval: | |
5153 | return -NFS4ERR_INVAL; | |
5154 | } | |
5155 | ||
78fe0f41 | 5156 | static bool |
79d4e1f0 CL |
5157 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
5158 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
5159 | { |
5160 | if (a->server_scope_sz == b->server_scope_sz && | |
5161 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
5162 | return true; | |
5163 | ||
5164 | return false; | |
5165 | } | |
5166 | ||
7c44f1ae WAA |
5167 | /* |
5168 | * nfs4_proc_bind_conn_to_session() | |
5169 | * | |
5170 | * The 4.1 client currently uses the same TCP connection for the | |
5171 | * fore and backchannel. | |
5172 | */ | |
2cf047c9 | 5173 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred) |
7c44f1ae WAA |
5174 | { |
5175 | int status; | |
5176 | struct nfs41_bind_conn_to_session_res res; | |
5177 | struct rpc_message msg = { | |
5178 | .rpc_proc = | |
5179 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
5180 | .rpc_argp = clp, | |
5181 | .rpc_resp = &res, | |
2cf047c9 | 5182 | .rpc_cred = cred, |
7c44f1ae WAA |
5183 | }; |
5184 | ||
5185 | dprintk("--> %s\n", __func__); | |
7c44f1ae WAA |
5186 | |
5187 | res.session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); | |
5188 | if (unlikely(res.session == NULL)) { | |
5189 | status = -ENOMEM; | |
5190 | goto out; | |
5191 | } | |
5192 | ||
5193 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5194 | if (status == 0) { | |
5195 | if (memcmp(res.session->sess_id.data, | |
5196 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { | |
5197 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
5198 | status = -EIO; | |
5199 | goto out_session; | |
5200 | } | |
5201 | if (res.dir != NFS4_CDFS4_BOTH) { | |
5202 | dprintk("NFS: %s: Unexpected direction from server\n", | |
5203 | __func__); | |
5204 | status = -EIO; | |
5205 | goto out_session; | |
5206 | } | |
5207 | if (res.use_conn_in_rdma_mode) { | |
5208 | dprintk("NFS: %s: Server returned RDMA mode = true\n", | |
5209 | __func__); | |
5210 | status = -EIO; | |
5211 | goto out_session; | |
5212 | } | |
5213 | } | |
5214 | out_session: | |
5215 | kfree(res.session); | |
5216 | out: | |
5217 | dprintk("<-- %s status= %d\n", __func__, status); | |
5218 | return status; | |
5219 | } | |
5220 | ||
99fe60d0 BH |
5221 | /* |
5222 | * nfs4_proc_exchange_id() | |
5223 | * | |
6bbb4ae8 CL |
5224 | * Returns zero, a negative errno, or a negative NFS4ERR status code. |
5225 | * | |
99fe60d0 BH |
5226 | * Since the clientid has expired, all compounds using sessions |
5227 | * associated with the stale clientid will be returning | |
5228 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
5229 | * be in some phase of session reset. | |
5230 | */ | |
4d643d1d | 5231 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
5232 | { |
5233 | nfs4_verifier verifier; | |
5234 | struct nfs41_exchange_id_args args = { | |
cd93710e | 5235 | .verifier = &verifier, |
99fe60d0 | 5236 | .client = clp, |
357f54d6 | 5237 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, |
99fe60d0 BH |
5238 | }; |
5239 | struct nfs41_exchange_id_res res = { | |
32b01310 | 5240 | 0 |
99fe60d0 BH |
5241 | }; |
5242 | int status; | |
5243 | struct rpc_message msg = { | |
5244 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
5245 | .rpc_argp = &args, | |
5246 | .rpc_resp = &res, | |
5247 | .rpc_cred = cred, | |
5248 | }; | |
99fe60d0 | 5249 | |
f092075d | 5250 | nfs4_init_boot_verifier(clp, &verifier); |
e984a55a CL |
5251 | args.id_len = nfs4_init_uniform_client_string(clp, args.id, |
5252 | sizeof(args.id)); | |
6bbb4ae8 CL |
5253 | dprintk("NFS call exchange_id auth=%s, '%.*s'\n", |
5254 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
5255 | args.id_len, args.id); | |
99fe60d0 | 5256 | |
acdeb69d | 5257 | res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
bbafffd2 | 5258 | GFP_NOFS); |
acdeb69d | 5259 | if (unlikely(res.server_owner == NULL)) { |
abe9a6d5 WAA |
5260 | status = -ENOMEM; |
5261 | goto out; | |
5262 | } | |
78fe0f41 | 5263 | |
79d4e1f0 | 5264 | res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 5265 | GFP_NOFS); |
177313f1 | 5266 | if (unlikely(res.server_scope == NULL)) { |
abe9a6d5 | 5267 | status = -ENOMEM; |
acdeb69d | 5268 | goto out_server_owner; |
abe9a6d5 | 5269 | } |
78fe0f41 | 5270 | |
bbafffd2 | 5271 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
177313f1 | 5272 | if (unlikely(res.impl_id == NULL)) { |
7d2ed9ac WAA |
5273 | status = -ENOMEM; |
5274 | goto out_server_scope; | |
5275 | } | |
5276 | ||
1bd714f2 | 5277 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
177313f1 | 5278 | if (status == 0) |
32b01310 | 5279 | status = nfs4_check_cl_exchange_flags(res.flags); |
78fe0f41 | 5280 | |
acdeb69d | 5281 | if (status == 0) { |
32b01310 TM |
5282 | clp->cl_clientid = res.clientid; |
5283 | clp->cl_exchange_flags = (res.flags & ~EXCHGID4_FLAG_CONFIRMED_R); | |
5284 | if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R)) | |
5285 | clp->cl_seqid = res.seqid; | |
5286 | ||
acdeb69d CL |
5287 | kfree(clp->cl_serverowner); |
5288 | clp->cl_serverowner = res.server_owner; | |
5289 | res.server_owner = NULL; | |
78fe0f41 | 5290 | |
7d2ed9ac | 5291 | /* use the most recent implementation id */ |
59155546 CL |
5292 | kfree(clp->cl_implid); |
5293 | clp->cl_implid = res.impl_id; | |
7d2ed9ac | 5294 | |
177313f1 | 5295 | if (clp->cl_serverscope != NULL && |
79d4e1f0 | 5296 | !nfs41_same_server_scope(clp->cl_serverscope, |
78fe0f41 WAA |
5297 | res.server_scope)) { |
5298 | dprintk("%s: server_scope mismatch detected\n", | |
5299 | __func__); | |
5300 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
79d4e1f0 CL |
5301 | kfree(clp->cl_serverscope); |
5302 | clp->cl_serverscope = NULL; | |
78fe0f41 WAA |
5303 | } |
5304 | ||
177313f1 | 5305 | if (clp->cl_serverscope == NULL) { |
79d4e1f0 | 5306 | clp->cl_serverscope = res.server_scope; |
abe9a6d5 WAA |
5307 | goto out; |
5308 | } | |
32b01310 TM |
5309 | } else |
5310 | kfree(res.impl_id); | |
7d2ed9ac | 5311 | |
acdeb69d CL |
5312 | out_server_owner: |
5313 | kfree(res.server_owner); | |
7d2ed9ac | 5314 | out_server_scope: |
abe9a6d5 WAA |
5315 | kfree(res.server_scope); |
5316 | out: | |
177313f1 | 5317 | if (clp->cl_implid != NULL) |
6bbb4ae8 | 5318 | dprintk("NFS reply exchange_id: Server Implementation ID: " |
7d2ed9ac | 5319 | "domain: %s, name: %s, date: %llu,%u\n", |
6bbb4ae8 | 5320 | clp->cl_implid->domain, clp->cl_implid->name, |
59155546 CL |
5321 | clp->cl_implid->date.seconds, |
5322 | clp->cl_implid->date.nseconds); | |
6bbb4ae8 | 5323 | dprintk("NFS reply exchange_id: %d\n", status); |
99fe60d0 BH |
5324 | return status; |
5325 | } | |
5326 | ||
66245539 TM |
5327 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
5328 | struct rpc_cred *cred) | |
5329 | { | |
5330 | struct rpc_message msg = { | |
5331 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
5332 | .rpc_argp = clp, | |
5333 | .rpc_cred = cred, | |
5334 | }; | |
5335 | int status; | |
5336 | ||
5337 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5338 | if (status) | |
02c67525 | 5339 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
5340 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
5341 | return status; | |
5342 | } | |
5343 | ||
5344 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
5345 | struct rpc_cred *cred) | |
5346 | { | |
5347 | unsigned int loop; | |
5348 | int ret; | |
5349 | ||
5350 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
5351 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
5352 | switch (ret) { | |
5353 | case -NFS4ERR_DELAY: | |
5354 | case -NFS4ERR_CLIENTID_BUSY: | |
5355 | ssleep(1); | |
5356 | break; | |
5357 | default: | |
5358 | return ret; | |
5359 | } | |
5360 | } | |
5361 | return 0; | |
5362 | } | |
5363 | ||
5364 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
5365 | { | |
5366 | struct rpc_cred *cred; | |
5367 | int ret = 0; | |
5368 | ||
5369 | if (clp->cl_mvops->minor_version < 1) | |
5370 | goto out; | |
5371 | if (clp->cl_exchange_flags == 0) | |
5372 | goto out; | |
05f4c350 CL |
5373 | if (clp->cl_preserve_clid) |
5374 | goto out; | |
66245539 TM |
5375 | cred = nfs4_get_exchange_id_cred(clp); |
5376 | ret = nfs4_proc_destroy_clientid(clp, cred); | |
5377 | if (cred) | |
5378 | put_rpccred(cred); | |
5379 | switch (ret) { | |
5380 | case 0: | |
5381 | case -NFS4ERR_STALE_CLIENTID: | |
5382 | clp->cl_exchange_flags = 0; | |
5383 | } | |
5384 | out: | |
5385 | return ret; | |
5386 | } | |
5387 | ||
2050f0cc AA |
5388 | struct nfs4_get_lease_time_data { |
5389 | struct nfs4_get_lease_time_args *args; | |
5390 | struct nfs4_get_lease_time_res *res; | |
5391 | struct nfs_client *clp; | |
5392 | }; | |
5393 | ||
5394 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
5395 | void *calldata) | |
5396 | { | |
2050f0cc AA |
5397 | struct nfs4_get_lease_time_data *data = |
5398 | (struct nfs4_get_lease_time_data *)calldata; | |
5399 | ||
5400 | dprintk("--> %s\n", __func__); | |
5401 | /* just setup sequence, do not trigger session recovery | |
5402 | since we're invoked within one */ | |
d9afbd1b TM |
5403 | nfs41_setup_sequence(data->clp->cl_session, |
5404 | &data->args->la_seq_args, | |
5405 | &data->res->lr_seq_res, | |
5406 | task); | |
2050f0cc AA |
5407 | dprintk("<-- %s\n", __func__); |
5408 | } | |
5409 | ||
5410 | /* | |
5411 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
5412 | * from sequence operation or clientid errors. | |
5413 | */ | |
5414 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
5415 | { | |
5416 | struct nfs4_get_lease_time_data *data = | |
5417 | (struct nfs4_get_lease_time_data *)calldata; | |
5418 | ||
5419 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5420 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
5421 | return; | |
2050f0cc AA |
5422 | switch (task->tk_status) { |
5423 | case -NFS4ERR_DELAY: | |
5424 | case -NFS4ERR_GRACE: | |
5425 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
5426 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
5427 | task->tk_status = 0; | |
a8a4ae3a AA |
5428 | /* fall through */ |
5429 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 5430 | rpc_restart_call_prepare(task); |
2050f0cc AA |
5431 | return; |
5432 | } | |
2050f0cc AA |
5433 | dprintk("<-- %s\n", __func__); |
5434 | } | |
5435 | ||
17280175 | 5436 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
5437 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
5438 | .rpc_call_done = nfs4_get_lease_time_done, | |
5439 | }; | |
5440 | ||
5441 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
5442 | { | |
5443 | struct rpc_task *task; | |
5444 | struct nfs4_get_lease_time_args args; | |
5445 | struct nfs4_get_lease_time_res res = { | |
5446 | .lr_fsinfo = fsinfo, | |
5447 | }; | |
5448 | struct nfs4_get_lease_time_data data = { | |
5449 | .args = &args, | |
5450 | .res = &res, | |
5451 | .clp = clp, | |
5452 | }; | |
5453 | struct rpc_message msg = { | |
5454 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
5455 | .rpc_argp = &args, | |
5456 | .rpc_resp = &res, | |
5457 | }; | |
5458 | struct rpc_task_setup task_setup = { | |
5459 | .rpc_client = clp->cl_rpcclient, | |
5460 | .rpc_message = &msg, | |
5461 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
5462 | .callback_data = &data, |
5463 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
5464 | }; |
5465 | int status; | |
5466 | ||
9d12b216 | 5467 | nfs41_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
8fe72bac | 5468 | nfs4_set_sequence_privileged(&args.la_seq_args); |
2050f0cc AA |
5469 | dprintk("--> %s\n", __func__); |
5470 | task = rpc_run_task(&task_setup); | |
5471 | ||
5472 | if (IS_ERR(task)) | |
5473 | status = PTR_ERR(task); | |
5474 | else { | |
5475 | status = task->tk_status; | |
5476 | rpc_put_task(task); | |
5477 | } | |
5478 | dprintk("<-- %s return %d\n", __func__, status); | |
5479 | ||
5480 | return status; | |
5481 | } | |
5482 | ||
fc931582 AA |
5483 | /* |
5484 | * Initialize the values to be used by the client in CREATE_SESSION | |
5485 | * If nfs4_init_session set the fore channel request and response sizes, | |
5486 | * use them. | |
5487 | * | |
5488 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
5489 | * always set csa_cachethis to FALSE because the current implementation | |
5490 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
5491 | */ | |
5492 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
5493 | { | |
5494 | struct nfs4_session *session = args->client->cl_session; | |
ae72ae67 TM |
5495 | unsigned int mxrqst_sz = session->fc_target_max_rqst_sz, |
5496 | mxresp_sz = session->fc_target_max_resp_sz; | |
fc931582 AA |
5497 | |
5498 | if (mxrqst_sz == 0) | |
5499 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
5500 | if (mxresp_sz == 0) | |
5501 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
5502 | /* Fore channel attributes */ | |
fc931582 AA |
5503 | args->fc_attrs.max_rqst_sz = mxrqst_sz; |
5504 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 | 5505 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 5506 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
5507 | |
5508 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 5509 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
5510 | __func__, |
5511 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 5512 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
5513 | |
5514 | /* Back channel attributes */ | |
fc931582 AA |
5515 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
5516 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
5517 | args->bc_attrs.max_resp_sz_cached = 0; | |
5518 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
5519 | args->bc_attrs.max_reqs = 1; | |
5520 | ||
5521 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
5522 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
5523 | __func__, | |
5524 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
5525 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
5526 | args->bc_attrs.max_reqs); | |
5527 | } | |
5528 | ||
43c2e885 | 5529 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 5530 | { |
43c2e885 BF |
5531 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
5532 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
5533 | ||
43c2e885 BF |
5534 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
5535 | return -EINVAL; | |
5536 | /* | |
5537 | * Our requested max_ops is the minimum we need; we're not | |
5538 | * prepared to break up compounds into smaller pieces than that. | |
5539 | * So, no point even trying to continue if the server won't | |
5540 | * cooperate: | |
5541 | */ | |
5542 | if (rcvd->max_ops < sent->max_ops) | |
5543 | return -EINVAL; | |
5544 | if (rcvd->max_reqs == 0) | |
5545 | return -EINVAL; | |
b4b9a0c1 VG |
5546 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
5547 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 5548 | return 0; |
8d35301d AA |
5549 | } |
5550 | ||
43c2e885 BF |
5551 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
5552 | { | |
5553 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
5554 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 5555 | |
43c2e885 BF |
5556 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
5557 | return -EINVAL; | |
5558 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
5559 | return -EINVAL; | |
5560 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
5561 | return -EINVAL; | |
5562 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 5563 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 5564 | return -EINVAL; |
b4b9a0c1 | 5565 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 BF |
5566 | return -EINVAL; |
5567 | return 0; | |
5568 | } | |
8d35301d | 5569 | |
8d35301d AA |
5570 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
5571 | struct nfs4_session *session) | |
5572 | { | |
43c2e885 | 5573 | int ret; |
8d35301d | 5574 | |
43c2e885 BF |
5575 | ret = nfs4_verify_fore_channel_attrs(args, session); |
5576 | if (ret) | |
5577 | return ret; | |
5578 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
5579 | } |
5580 | ||
848f5bda TM |
5581 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
5582 | struct rpc_cred *cred) | |
fc931582 AA |
5583 | { |
5584 | struct nfs4_session *session = clp->cl_session; | |
5585 | struct nfs41_create_session_args args = { | |
5586 | .client = clp, | |
5587 | .cb_program = NFS4_CALLBACK, | |
5588 | }; | |
5589 | struct nfs41_create_session_res res = { | |
5590 | .client = clp, | |
5591 | }; | |
5592 | struct rpc_message msg = { | |
5593 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
5594 | .rpc_argp = &args, | |
5595 | .rpc_resp = &res, | |
848f5bda | 5596 | .rpc_cred = cred, |
fc931582 AA |
5597 | }; |
5598 | int status; | |
5599 | ||
5600 | nfs4_init_channel_attrs(&args); | |
0f91421e | 5601 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 5602 | |
1bd714f2 | 5603 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
fc931582 | 5604 | |
43095d39 | 5605 | if (!status) { |
8d35301d AA |
5606 | /* Verify the session's negotiated channel_attrs values */ |
5607 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
5608 | /* Increment the clientid slot sequence id */ |
5609 | clp->cl_seqid++; | |
5610 | } | |
5611 | ||
5612 | return status; | |
5613 | } | |
5614 | ||
5615 | /* | |
5616 | * Issues a CREATE_SESSION operation to the server. | |
5617 | * It is the responsibility of the caller to verify the session is | |
5618 | * expired before calling this routine. | |
5619 | */ | |
848f5bda | 5620 | int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred) |
fc931582 AA |
5621 | { |
5622 | int status; | |
5623 | unsigned *ptr; | |
fc931582 AA |
5624 | struct nfs4_session *session = clp->cl_session; |
5625 | ||
5626 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
5627 | ||
848f5bda | 5628 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
5629 | if (status) |
5630 | goto out; | |
5631 | ||
aacd5537 AA |
5632 | /* Init or reset the session slot tables */ |
5633 | status = nfs4_setup_session_slot_tables(session); | |
5634 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
5635 | if (status) |
5636 | goto out; | |
5637 | ||
5638 | ptr = (unsigned *)&session->sess_id.data[0]; | |
5639 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
5640 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
5641 | out: |
5642 | dprintk("<-- %s\n", __func__); | |
5643 | return status; | |
5644 | } | |
5645 | ||
0f3e66c6 AA |
5646 | /* |
5647 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
5648 | * The caller must serialize access to this routine. | |
5649 | */ | |
848f5bda TM |
5650 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
5651 | struct rpc_cred *cred) | |
0f3e66c6 | 5652 | { |
848f5bda TM |
5653 | struct rpc_message msg = { |
5654 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
5655 | .rpc_argp = session, | |
5656 | .rpc_cred = cred, | |
5657 | }; | |
0f3e66c6 | 5658 | int status = 0; |
0f3e66c6 AA |
5659 | |
5660 | dprintk("--> nfs4_proc_destroy_session\n"); | |
5661 | ||
5662 | /* session is still being setup */ | |
5663 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
5664 | return status; | |
5665 | ||
1bd714f2 | 5666 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
0f3e66c6 AA |
5667 | |
5668 | if (status) | |
08106ac7 | 5669 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
5670 | "Session has been destroyed regardless...\n", status); |
5671 | ||
5672 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
5673 | return status; | |
5674 | } | |
5675 | ||
fc01cea9 AA |
5676 | /* |
5677 | * Renew the cl_session lease. | |
5678 | */ | |
d5f8d3fe TM |
5679 | struct nfs4_sequence_data { |
5680 | struct nfs_client *clp; | |
5681 | struct nfs4_sequence_args args; | |
5682 | struct nfs4_sequence_res res; | |
5683 | }; | |
5684 | ||
dc96aef9 AB |
5685 | static void nfs41_sequence_release(void *data) |
5686 | { | |
d5f8d3fe TM |
5687 | struct nfs4_sequence_data *calldata = data; |
5688 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 5689 | |
7135840f AB |
5690 | if (atomic_read(&clp->cl_count) > 1) |
5691 | nfs4_schedule_state_renewal(clp); | |
5692 | nfs_put_client(clp); | |
d5f8d3fe | 5693 | kfree(calldata); |
dc96aef9 AB |
5694 | } |
5695 | ||
aa5190d0 TM |
5696 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5697 | { | |
5698 | switch(task->tk_status) { | |
5699 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5700 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5701 | return -EAGAIN; | |
5702 | default: | |
0400a6b0 | 5703 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5704 | } |
5705 | return 0; | |
5706 | } | |
5707 | ||
dc96aef9 | 5708 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 5709 | { |
d5f8d3fe TM |
5710 | struct nfs4_sequence_data *calldata = data; |
5711 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 5712 | |
14516c3a TM |
5713 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
5714 | return; | |
fc01cea9 AA |
5715 | |
5716 | if (task->tk_status < 0) { | |
5717 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
5718 | if (atomic_read(&clp->cl_count) == 1) |
5719 | goto out; | |
fc01cea9 | 5720 | |
aa5190d0 TM |
5721 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
5722 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
5723 | return; |
5724 | } | |
5725 | } | |
fc01cea9 | 5726 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 5727 | out: |
fc01cea9 AA |
5728 | dprintk("<-- %s\n", __func__); |
5729 | } | |
5730 | ||
5731 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
5732 | { | |
d5f8d3fe TM |
5733 | struct nfs4_sequence_data *calldata = data; |
5734 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
5735 | struct nfs4_sequence_args *args; |
5736 | struct nfs4_sequence_res *res; | |
5737 | ||
fc01cea9 AA |
5738 | args = task->tk_msg.rpc_argp; |
5739 | res = task->tk_msg.rpc_resp; | |
5740 | ||
d9afbd1b | 5741 | nfs41_setup_sequence(clp->cl_session, args, res, task); |
fc01cea9 AA |
5742 | } |
5743 | ||
5744 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
5745 | .rpc_call_done = nfs41_sequence_call_done, | |
5746 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 5747 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
5748 | }; |
5749 | ||
8fe72bac TM |
5750 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, |
5751 | struct rpc_cred *cred, | |
5752 | bool is_privileged) | |
fc01cea9 | 5753 | { |
d5f8d3fe | 5754 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
5755 | struct rpc_message msg = { |
5756 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
5757 | .rpc_cred = cred, | |
5758 | }; | |
71ac6da9 TM |
5759 | struct rpc_task_setup task_setup_data = { |
5760 | .rpc_client = clp->cl_rpcclient, | |
5761 | .rpc_message = &msg, | |
8fe72bac | 5762 | .callback_ops = &nfs41_sequence_ops, |
71ac6da9 TM |
5763 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT, |
5764 | }; | |
fc01cea9 | 5765 | |
7135840f | 5766 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 5767 | return ERR_PTR(-EIO); |
dfb4f309 | 5768 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 5769 | if (calldata == NULL) { |
7135840f | 5770 | nfs_put_client(clp); |
71ac6da9 | 5771 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 5772 | } |
9d12b216 | 5773 | nfs41_init_sequence(&calldata->args, &calldata->res, 0); |
8fe72bac TM |
5774 | if (is_privileged) |
5775 | nfs4_set_sequence_privileged(&calldata->args); | |
d5f8d3fe TM |
5776 | msg.rpc_argp = &calldata->args; |
5777 | msg.rpc_resp = &calldata->res; | |
5778 | calldata->clp = clp; | |
71ac6da9 | 5779 | task_setup_data.callback_data = calldata; |
fc01cea9 | 5780 | |
71ac6da9 TM |
5781 | return rpc_run_task(&task_setup_data); |
5782 | } | |
5783 | ||
2f60ea6b | 5784 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
5785 | { |
5786 | struct rpc_task *task; | |
5787 | int ret = 0; | |
5788 | ||
2f60ea6b TM |
5789 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
5790 | return 0; | |
8fe72bac | 5791 | task = _nfs41_proc_sequence(clp, cred, false); |
71ac6da9 TM |
5792 | if (IS_ERR(task)) |
5793 | ret = PTR_ERR(task); | |
5794 | else | |
bf294b41 | 5795 | rpc_put_task_async(task); |
71ac6da9 TM |
5796 | dprintk("<-- %s status=%d\n", __func__, ret); |
5797 | return ret; | |
5798 | } | |
5799 | ||
5800 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5801 | { | |
5802 | struct rpc_task *task; | |
5803 | int ret; | |
5804 | ||
8fe72bac | 5805 | task = _nfs41_proc_sequence(clp, cred, true); |
71ac6da9 TM |
5806 | if (IS_ERR(task)) { |
5807 | ret = PTR_ERR(task); | |
5808 | goto out; | |
5809 | } | |
5810 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
5811 | if (!ret) { |
5812 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
5813 | ||
5814 | if (task->tk_status == 0) | |
5815 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 5816 | ret = task->tk_status; |
b4410c2f | 5817 | } |
71ac6da9 TM |
5818 | rpc_put_task(task); |
5819 | out: | |
5820 | dprintk("<-- %s status=%d\n", __func__, ret); | |
5821 | return ret; | |
fc01cea9 AA |
5822 | } |
5823 | ||
fce5c838 RL |
5824 | struct nfs4_reclaim_complete_data { |
5825 | struct nfs_client *clp; | |
5826 | struct nfs41_reclaim_complete_args arg; | |
5827 | struct nfs41_reclaim_complete_res res; | |
5828 | }; | |
5829 | ||
5830 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
5831 | { | |
5832 | struct nfs4_reclaim_complete_data *calldata = data; | |
5833 | ||
d9afbd1b TM |
5834 | nfs41_setup_sequence(calldata->clp->cl_session, |
5835 | &calldata->arg.seq_args, | |
5836 | &calldata->res.seq_res, | |
5837 | task); | |
fce5c838 RL |
5838 | } |
5839 | ||
aa5190d0 TM |
5840 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5841 | { | |
5842 | switch(task->tk_status) { | |
5843 | case 0: | |
5844 | case -NFS4ERR_COMPLETE_ALREADY: | |
5845 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
5846 | break; | |
5847 | case -NFS4ERR_DELAY: | |
aa5190d0 | 5848 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
5849 | /* fall through */ |
5850 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
5851 | return -EAGAIN; |
5852 | default: | |
0400a6b0 | 5853 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5854 | } |
5855 | return 0; | |
5856 | } | |
5857 | ||
fce5c838 RL |
5858 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
5859 | { | |
5860 | struct nfs4_reclaim_complete_data *calldata = data; | |
5861 | struct nfs_client *clp = calldata->clp; | |
5862 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
5863 | ||
5864 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5865 | if (!nfs41_sequence_done(task, res)) |
5866 | return; | |
fce5c838 | 5867 | |
aa5190d0 TM |
5868 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
5869 | rpc_restart_call_prepare(task); | |
5870 | return; | |
5871 | } | |
fce5c838 RL |
5872 | dprintk("<-- %s\n", __func__); |
5873 | } | |
5874 | ||
5875 | static void nfs4_free_reclaim_complete_data(void *data) | |
5876 | { | |
5877 | struct nfs4_reclaim_complete_data *calldata = data; | |
5878 | ||
5879 | kfree(calldata); | |
5880 | } | |
5881 | ||
5882 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
5883 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
5884 | .rpc_call_done = nfs4_reclaim_complete_done, | |
5885 | .rpc_release = nfs4_free_reclaim_complete_data, | |
5886 | }; | |
5887 | ||
5888 | /* | |
5889 | * Issue a global reclaim complete. | |
5890 | */ | |
5891 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
5892 | { | |
5893 | struct nfs4_reclaim_complete_data *calldata; | |
5894 | struct rpc_task *task; | |
5895 | struct rpc_message msg = { | |
5896 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
5897 | }; | |
5898 | struct rpc_task_setup task_setup_data = { | |
5899 | .rpc_client = clp->cl_rpcclient, | |
5900 | .rpc_message = &msg, | |
5901 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
5902 | .flags = RPC_TASK_ASYNC, | |
5903 | }; | |
5904 | int status = -ENOMEM; | |
5905 | ||
5906 | dprintk("--> %s\n", __func__); | |
8535b2be | 5907 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
5908 | if (calldata == NULL) |
5909 | goto out; | |
5910 | calldata->clp = clp; | |
5911 | calldata->arg.one_fs = 0; | |
fce5c838 | 5912 | |
9d12b216 | 5913 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
8fe72bac | 5914 | nfs4_set_sequence_privileged(&calldata->arg.seq_args); |
fce5c838 RL |
5915 | msg.rpc_argp = &calldata->arg; |
5916 | msg.rpc_resp = &calldata->res; | |
5917 | task_setup_data.callback_data = calldata; | |
5918 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 5919 | if (IS_ERR(task)) { |
fce5c838 | 5920 | status = PTR_ERR(task); |
acf82b85 DC |
5921 | goto out; |
5922 | } | |
c34c32ea AA |
5923 | status = nfs4_wait_for_completion_rpc_task(task); |
5924 | if (status == 0) | |
5925 | status = task->tk_status; | |
fce5c838 | 5926 | rpc_put_task(task); |
acf82b85 | 5927 | return 0; |
fce5c838 RL |
5928 | out: |
5929 | dprintk("<-- %s status=%d\n", __func__, status); | |
5930 | return status; | |
5931 | } | |
b1f69b75 AA |
5932 | |
5933 | static void | |
5934 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
5935 | { | |
5936 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 5937 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
6ba7db34 | 5938 | struct nfs4_session *session = nfs4_get_session(server); |
b1f69b75 AA |
5939 | |
5940 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
5941 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
5942 | * right now covering the LAYOUTGET we are about to send. | |
5943 | * However, that is not so catastrophic, and there seems | |
5944 | * to be no way to prevent it completely. | |
5945 | */ | |
6ba7db34 | 5946 | if (nfs41_setup_sequence(session, &lgp->args.seq_args, |
9d12b216 | 5947 | &lgp->res.seq_res, task)) |
b1f69b75 | 5948 | return; |
cf7d63f1 FI |
5949 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
5950 | NFS_I(lgp->args.inode)->layout, | |
5951 | lgp->args.ctx->state)) { | |
5952 | rpc_exit(task, NFS4_OK); | |
cf7d63f1 | 5953 | } |
b1f69b75 AA |
5954 | } |
5955 | ||
5956 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
5957 | { | |
5958 | struct nfs4_layoutget *lgp = calldata; | |
ee314c2a TM |
5959 | struct inode *inode = lgp->args.inode; |
5960 | struct nfs_server *server = NFS_SERVER(inode); | |
5961 | struct pnfs_layout_hdr *lo; | |
5962 | struct nfs4_state *state = NULL; | |
b1f69b75 AA |
5963 | |
5964 | dprintk("--> %s\n", __func__); | |
5965 | ||
6ba7db34 | 5966 | if (!nfs41_sequence_done(task, &lgp->res.seq_res)) |
ee314c2a | 5967 | goto out; |
b1f69b75 AA |
5968 | |
5969 | switch (task->tk_status) { | |
5970 | case 0: | |
ee314c2a | 5971 | goto out; |
b1f69b75 AA |
5972 | case -NFS4ERR_LAYOUTTRYLATER: |
5973 | case -NFS4ERR_RECALLCONFLICT: | |
5974 | task->tk_status = -NFS4ERR_DELAY; | |
ee314c2a TM |
5975 | break; |
5976 | case -NFS4ERR_EXPIRED: | |
5977 | case -NFS4ERR_BAD_STATEID: | |
5978 | spin_lock(&inode->i_lock); | |
5979 | lo = NFS_I(inode)->layout; | |
5980 | if (!lo || list_empty(&lo->plh_segs)) { | |
5981 | spin_unlock(&inode->i_lock); | |
5982 | /* If the open stateid was bad, then recover it. */ | |
5983 | state = lgp->args.ctx->state; | |
5984 | } else { | |
5985 | LIST_HEAD(head); | |
5986 | ||
5987 | pnfs_mark_matching_lsegs_invalid(lo, &head, NULL); | |
5988 | spin_unlock(&inode->i_lock); | |
5989 | /* Mark the bad layout state as invalid, then | |
5990 | * retry using the open stateid. */ | |
5991 | pnfs_free_lseg_list(&head); | |
b1f69b75 AA |
5992 | } |
5993 | } | |
ee314c2a TM |
5994 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
5995 | rpc_restart_call_prepare(task); | |
5996 | out: | |
b1f69b75 AA |
5997 | dprintk("<-- %s\n", __func__); |
5998 | } | |
5999 | ||
8554116e IK |
6000 | static size_t max_response_pages(struct nfs_server *server) |
6001 | { | |
6002 | u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; | |
6003 | return nfs_page_array_len(0, max_resp_sz); | |
6004 | } | |
6005 | ||
6006 | static void nfs4_free_pages(struct page **pages, size_t size) | |
6007 | { | |
6008 | int i; | |
6009 | ||
6010 | if (!pages) | |
6011 | return; | |
6012 | ||
6013 | for (i = 0; i < size; i++) { | |
6014 | if (!pages[i]) | |
6015 | break; | |
6016 | __free_page(pages[i]); | |
6017 | } | |
6018 | kfree(pages); | |
6019 | } | |
6020 | ||
6021 | static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags) | |
6022 | { | |
6023 | struct page **pages; | |
6024 | int i; | |
6025 | ||
6026 | pages = kcalloc(size, sizeof(struct page *), gfp_flags); | |
6027 | if (!pages) { | |
6028 | dprintk("%s: can't alloc array of %zu pages\n", __func__, size); | |
6029 | return NULL; | |
6030 | } | |
6031 | ||
6032 | for (i = 0; i < size; i++) { | |
6033 | pages[i] = alloc_page(gfp_flags); | |
6034 | if (!pages[i]) { | |
6035 | dprintk("%s: failed to allocate page\n", __func__); | |
6036 | nfs4_free_pages(pages, size); | |
6037 | return NULL; | |
6038 | } | |
6039 | } | |
6040 | ||
6041 | return pages; | |
6042 | } | |
6043 | ||
b1f69b75 AA |
6044 | static void nfs4_layoutget_release(void *calldata) |
6045 | { | |
6046 | struct nfs4_layoutget *lgp = calldata; | |
8554116e IK |
6047 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
6048 | size_t max_pages = max_response_pages(server); | |
b1f69b75 AA |
6049 | |
6050 | dprintk("--> %s\n", __func__); | |
8554116e | 6051 | nfs4_free_pages(lgp->args.layout.pages, max_pages); |
b1f69b75 AA |
6052 | put_nfs_open_context(lgp->args.ctx); |
6053 | kfree(calldata); | |
6054 | dprintk("<-- %s\n", __func__); | |
6055 | } | |
6056 | ||
6057 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
6058 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
6059 | .rpc_call_done = nfs4_layoutget_done, | |
6060 | .rpc_release = nfs4_layoutget_release, | |
6061 | }; | |
6062 | ||
a0b0a6e3 TM |
6063 | struct pnfs_layout_segment * |
6064 | nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags) | |
b1f69b75 AA |
6065 | { |
6066 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
8554116e | 6067 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
6068 | struct rpc_task *task; |
6069 | struct rpc_message msg = { | |
6070 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
6071 | .rpc_argp = &lgp->args, | |
6072 | .rpc_resp = &lgp->res, | |
6073 | }; | |
6074 | struct rpc_task_setup task_setup_data = { | |
6075 | .rpc_client = server->client, | |
6076 | .rpc_message = &msg, | |
6077 | .callback_ops = &nfs4_layoutget_call_ops, | |
6078 | .callback_data = lgp, | |
6079 | .flags = RPC_TASK_ASYNC, | |
6080 | }; | |
a0b0a6e3 | 6081 | struct pnfs_layout_segment *lseg = NULL; |
b1f69b75 AA |
6082 | int status = 0; |
6083 | ||
6084 | dprintk("--> %s\n", __func__); | |
6085 | ||
8554116e IK |
6086 | lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags); |
6087 | if (!lgp->args.layout.pages) { | |
6088 | nfs4_layoutget_release(lgp); | |
a0b0a6e3 | 6089 | return ERR_PTR(-ENOMEM); |
8554116e IK |
6090 | } |
6091 | lgp->args.layout.pglen = max_pages * PAGE_SIZE; | |
6092 | ||
35124a09 | 6093 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 6094 | lgp->res.seq_res.sr_slot = NULL; |
9d12b216 | 6095 | nfs41_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
b1f69b75 AA |
6096 | task = rpc_run_task(&task_setup_data); |
6097 | if (IS_ERR(task)) | |
a0b0a6e3 | 6098 | return ERR_CAST(task); |
b1f69b75 | 6099 | status = nfs4_wait_for_completion_rpc_task(task); |
c31663d4 FI |
6100 | if (status == 0) |
6101 | status = task->tk_status; | |
6102 | if (status == 0) | |
a0b0a6e3 | 6103 | lseg = pnfs_layout_process(lgp); |
b1f69b75 AA |
6104 | rpc_put_task(task); |
6105 | dprintk("<-- %s status=%d\n", __func__, status); | |
a0b0a6e3 TM |
6106 | if (status) |
6107 | return ERR_PTR(status); | |
6108 | return lseg; | |
b1f69b75 AA |
6109 | } |
6110 | ||
cbe82603 BH |
6111 | static void |
6112 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
6113 | { | |
6114 | struct nfs4_layoutreturn *lrp = calldata; | |
6115 | ||
6116 | dprintk("--> %s\n", __func__); | |
d9afbd1b TM |
6117 | nfs41_setup_sequence(lrp->clp->cl_session, |
6118 | &lrp->args.seq_args, | |
6119 | &lrp->res.seq_res, | |
6120 | task); | |
cbe82603 BH |
6121 | } |
6122 | ||
6123 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
6124 | { | |
6125 | struct nfs4_layoutreturn *lrp = calldata; | |
6126 | struct nfs_server *server; | |
6127 | ||
6128 | dprintk("--> %s\n", __func__); | |
6129 | ||
6ba7db34 | 6130 | if (!nfs41_sequence_done(task, &lrp->res.seq_res)) |
cbe82603 BH |
6131 | return; |
6132 | ||
6133 | server = NFS_SERVER(lrp->args.inode); | |
6134 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 6135 | rpc_restart_call_prepare(task); |
cbe82603 BH |
6136 | return; |
6137 | } | |
cbe82603 BH |
6138 | dprintk("<-- %s\n", __func__); |
6139 | } | |
6140 | ||
6141 | static void nfs4_layoutreturn_release(void *calldata) | |
6142 | { | |
6143 | struct nfs4_layoutreturn *lrp = calldata; | |
849b286f | 6144 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
6145 | |
6146 | dprintk("--> %s\n", __func__); | |
849b286f TM |
6147 | spin_lock(&lo->plh_inode->i_lock); |
6148 | if (lrp->res.lrs_present) | |
6149 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); | |
6150 | lo->plh_block_lgets--; | |
6151 | spin_unlock(&lo->plh_inode->i_lock); | |
70c3bd2b | 6152 | pnfs_put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
6153 | kfree(calldata); |
6154 | dprintk("<-- %s\n", __func__); | |
6155 | } | |
6156 | ||
6157 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
6158 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
6159 | .rpc_call_done = nfs4_layoutreturn_done, | |
6160 | .rpc_release = nfs4_layoutreturn_release, | |
6161 | }; | |
6162 | ||
6163 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
6164 | { | |
6165 | struct rpc_task *task; | |
6166 | struct rpc_message msg = { | |
6167 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
6168 | .rpc_argp = &lrp->args, | |
6169 | .rpc_resp = &lrp->res, | |
6170 | }; | |
6171 | struct rpc_task_setup task_setup_data = { | |
6172 | .rpc_client = lrp->clp->cl_rpcclient, | |
6173 | .rpc_message = &msg, | |
6174 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
6175 | .callback_data = lrp, | |
6176 | }; | |
6177 | int status; | |
6178 | ||
6179 | dprintk("--> %s\n", __func__); | |
9d12b216 | 6180 | nfs41_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
6181 | task = rpc_run_task(&task_setup_data); |
6182 | if (IS_ERR(task)) | |
6183 | return PTR_ERR(task); | |
6184 | status = task->tk_status; | |
6185 | dprintk("<-- %s status=%d\n", __func__, status); | |
6186 | rpc_put_task(task); | |
6187 | return status; | |
6188 | } | |
6189 | ||
7f11d8d3 AA |
6190 | /* |
6191 | * Retrieve the list of Data Server devices from the MDS. | |
6192 | */ | |
6193 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
6194 | const struct nfs_fh *fh, | |
6195 | struct pnfs_devicelist *devlist) | |
6196 | { | |
6197 | struct nfs4_getdevicelist_args args = { | |
6198 | .fh = fh, | |
6199 | .layoutclass = server->pnfs_curr_ld->id, | |
6200 | }; | |
6201 | struct nfs4_getdevicelist_res res = { | |
6202 | .devlist = devlist, | |
6203 | }; | |
6204 | struct rpc_message msg = { | |
6205 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
6206 | .rpc_argp = &args, | |
6207 | .rpc_resp = &res, | |
6208 | }; | |
6209 | int status; | |
6210 | ||
6211 | dprintk("--> %s\n", __func__); | |
6212 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
6213 | &res.seq_res, 0); | |
6214 | dprintk("<-- %s status=%d\n", __func__, status); | |
6215 | return status; | |
6216 | } | |
6217 | ||
6218 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
6219 | const struct nfs_fh *fh, | |
6220 | struct pnfs_devicelist *devlist) | |
6221 | { | |
6222 | struct nfs4_exception exception = { }; | |
6223 | int err; | |
6224 | ||
6225 | do { | |
6226 | err = nfs4_handle_exception(server, | |
6227 | _nfs4_getdevicelist(server, fh, devlist), | |
6228 | &exception); | |
6229 | } while (exception.retry); | |
6230 | ||
6231 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
6232 | err, devlist->num_devs); | |
6233 | ||
6234 | return err; | |
6235 | } | |
6236 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
6237 | ||
b1f69b75 AA |
6238 | static int |
6239 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6240 | { | |
6241 | struct nfs4_getdeviceinfo_args args = { | |
6242 | .pdev = pdev, | |
6243 | }; | |
6244 | struct nfs4_getdeviceinfo_res res = { | |
6245 | .pdev = pdev, | |
6246 | }; | |
6247 | struct rpc_message msg = { | |
6248 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
6249 | .rpc_argp = &args, | |
6250 | .rpc_resp = &res, | |
6251 | }; | |
6252 | int status; | |
6253 | ||
6254 | dprintk("--> %s\n", __func__); | |
7c513058 | 6255 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
6256 | dprintk("<-- %s status=%d\n", __func__, status); |
6257 | ||
6258 | return status; | |
6259 | } | |
6260 | ||
6261 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6262 | { | |
6263 | struct nfs4_exception exception = { }; | |
6264 | int err; | |
6265 | ||
6266 | do { | |
6267 | err = nfs4_handle_exception(server, | |
6268 | _nfs4_proc_getdeviceinfo(server, pdev), | |
6269 | &exception); | |
6270 | } while (exception.retry); | |
6271 | return err; | |
6272 | } | |
6273 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
6274 | ||
863a3c6c AA |
6275 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
6276 | { | |
6277 | struct nfs4_layoutcommit_data *data = calldata; | |
6278 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6ba7db34 | 6279 | struct nfs4_session *session = nfs4_get_session(server); |
863a3c6c | 6280 | |
d9afbd1b TM |
6281 | nfs41_setup_sequence(session, |
6282 | &data->args.seq_args, | |
6283 | &data->res.seq_res, | |
6284 | task); | |
863a3c6c AA |
6285 | } |
6286 | ||
6287 | static void | |
6288 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
6289 | { | |
6290 | struct nfs4_layoutcommit_data *data = calldata; | |
6291 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6292 | ||
6ba7db34 | 6293 | if (!nfs41_sequence_done(task, &data->res.seq_res)) |
863a3c6c AA |
6294 | return; |
6295 | ||
6296 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
6297 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
6298 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
6299 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
6300 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 6301 | task->tk_status = 0; |
e59d27e0 TM |
6302 | break; |
6303 | case 0: | |
863a3c6c AA |
6304 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
6305 | data->res.fattr); | |
e59d27e0 TM |
6306 | break; |
6307 | default: | |
6308 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
6309 | rpc_restart_call_prepare(task); | |
6310 | return; | |
6311 | } | |
6312 | } | |
863a3c6c AA |
6313 | } |
6314 | ||
6315 | static void nfs4_layoutcommit_release(void *calldata) | |
6316 | { | |
6317 | struct nfs4_layoutcommit_data *data = calldata; | |
a9bae566 | 6318 | struct pnfs_layout_segment *lseg, *tmp; |
92407e75 | 6319 | unsigned long *bitlock = &NFS_I(data->args.inode)->flags; |
863a3c6c | 6320 | |
db29c089 | 6321 | pnfs_cleanup_layoutcommit(data); |
863a3c6c | 6322 | /* Matched by references in pnfs_set_layoutcommit */ |
a9bae566 PT |
6323 | list_for_each_entry_safe(lseg, tmp, &data->lseg_list, pls_lc_list) { |
6324 | list_del_init(&lseg->pls_lc_list); | |
6325 | if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT, | |
6326 | &lseg->pls_flags)) | |
9369a431 | 6327 | pnfs_put_lseg(lseg); |
a9bae566 | 6328 | } |
92407e75 PT |
6329 | |
6330 | clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING, bitlock); | |
6331 | smp_mb__after_clear_bit(); | |
6332 | wake_up_bit(bitlock, NFS_INO_LAYOUTCOMMITTING); | |
6333 | ||
863a3c6c AA |
6334 | put_rpccred(data->cred); |
6335 | kfree(data); | |
6336 | } | |
6337 | ||
6338 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
6339 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
6340 | .rpc_call_done = nfs4_layoutcommit_done, | |
6341 | .rpc_release = nfs4_layoutcommit_release, | |
6342 | }; | |
6343 | ||
6344 | int | |
ef311537 | 6345 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
6346 | { |
6347 | struct rpc_message msg = { | |
6348 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
6349 | .rpc_argp = &data->args, | |
6350 | .rpc_resp = &data->res, | |
6351 | .rpc_cred = data->cred, | |
6352 | }; | |
6353 | struct rpc_task_setup task_setup_data = { | |
6354 | .task = &data->task, | |
6355 | .rpc_client = NFS_CLIENT(data->args.inode), | |
6356 | .rpc_message = &msg, | |
6357 | .callback_ops = &nfs4_layoutcommit_ops, | |
6358 | .callback_data = data, | |
6359 | .flags = RPC_TASK_ASYNC, | |
6360 | }; | |
6361 | struct rpc_task *task; | |
6362 | int status = 0; | |
6363 | ||
6364 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
6365 | "lbw: %llu inode %lu\n", | |
6366 | data->task.tk_pid, sync, | |
6367 | data->args.lastbytewritten, | |
6368 | data->args.inode->i_ino); | |
6369 | ||
9d12b216 | 6370 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
6371 | task = rpc_run_task(&task_setup_data); |
6372 | if (IS_ERR(task)) | |
6373 | return PTR_ERR(task); | |
ef311537 | 6374 | if (sync == false) |
863a3c6c AA |
6375 | goto out; |
6376 | status = nfs4_wait_for_completion_rpc_task(task); | |
6377 | if (status != 0) | |
6378 | goto out; | |
6379 | status = task->tk_status; | |
6380 | out: | |
6381 | dprintk("%s: status %d\n", __func__, status); | |
6382 | rpc_put_task(task); | |
6383 | return status; | |
6384 | } | |
fca78d6d BS |
6385 | |
6386 | static int | |
6387 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6388 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6389 | { | |
6390 | struct nfs41_secinfo_no_name_args args = { | |
6391 | .style = SECINFO_STYLE_CURRENT_FH, | |
6392 | }; | |
6393 | struct nfs4_secinfo_res res = { | |
6394 | .flavors = flavors, | |
6395 | }; | |
6396 | struct rpc_message msg = { | |
6397 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
6398 | .rpc_argp = &args, | |
6399 | .rpc_resp = &res, | |
6400 | }; | |
6401 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); | |
6402 | } | |
6403 | ||
6404 | static int | |
6405 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6406 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6407 | { | |
6408 | struct nfs4_exception exception = { }; | |
6409 | int err; | |
6410 | do { | |
6411 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6412 | switch (err) { | |
6413 | case 0: | |
6414 | case -NFS4ERR_WRONGSEC: | |
6415 | case -NFS4ERR_NOTSUPP: | |
05e9cfb4 | 6416 | goto out; |
fca78d6d BS |
6417 | default: |
6418 | err = nfs4_handle_exception(server, err, &exception); | |
6419 | } | |
6420 | } while (exception.retry); | |
05e9cfb4 | 6421 | out: |
fca78d6d BS |
6422 | return err; |
6423 | } | |
6424 | ||
6425 | static int | |
6426 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
6427 | struct nfs_fsinfo *info) | |
6428 | { | |
6429 | int err; | |
6430 | struct page *page; | |
6431 | rpc_authflavor_t flavor; | |
6432 | struct nfs4_secinfo_flavors *flavors; | |
6433 | ||
6434 | page = alloc_page(GFP_KERNEL); | |
6435 | if (!page) { | |
6436 | err = -ENOMEM; | |
6437 | goto out; | |
6438 | } | |
6439 | ||
6440 | flavors = page_address(page); | |
6441 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6442 | ||
6443 | /* | |
6444 | * Fall back on "guess and check" method if | |
6445 | * the server doesn't support SECINFO_NO_NAME | |
6446 | */ | |
6447 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
6448 | err = nfs4_find_root_sec(server, fhandle, info); | |
6449 | goto out_freepage; | |
6450 | } | |
6451 | if (err) | |
6452 | goto out_freepage; | |
6453 | ||
6454 | flavor = nfs_find_best_sec(flavors); | |
6455 | if (err == 0) | |
6456 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
6457 | ||
6458 | out_freepage: | |
6459 | put_page(page); | |
6460 | if (err == -EACCES) | |
6461 | return -EPERM; | |
6462 | out: | |
6463 | return err; | |
6464 | } | |
1cab0652 BS |
6465 | |
6466 | static int _nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) | |
7d974794 BS |
6467 | { |
6468 | int status; | |
6469 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 6470 | .stateid = stateid, |
7d974794 BS |
6471 | }; |
6472 | struct nfs41_test_stateid_res res; | |
6473 | struct rpc_message msg = { | |
6474 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
6475 | .rpc_argp = &args, | |
6476 | .rpc_resp = &res, | |
6477 | }; | |
1cab0652 | 6478 | |
38527b15 | 6479 | dprintk("NFS call test_stateid %p\n", stateid); |
9d12b216 | 6480 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
8fe72bac TM |
6481 | nfs4_set_sequence_privileged(&args.seq_args); |
6482 | status = nfs4_call_sync_sequence(server->client, server, &msg, | |
6483 | &args.seq_args, &res.seq_res); | |
38527b15 CL |
6484 | if (status != NFS_OK) { |
6485 | dprintk("NFS reply test_stateid: failed, %d\n", status); | |
377e507d | 6486 | return status; |
38527b15 CL |
6487 | } |
6488 | dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status); | |
377e507d | 6489 | return -res.status; |
7d974794 BS |
6490 | } |
6491 | ||
38527b15 CL |
6492 | /** |
6493 | * nfs41_test_stateid - perform a TEST_STATEID operation | |
6494 | * | |
6495 | * @server: server / transport on which to perform the operation | |
6496 | * @stateid: state ID to test | |
6497 | * | |
6498 | * Returns NFS_OK if the server recognizes that "stateid" is valid. | |
6499 | * Otherwise a negative NFS4ERR value is returned if the operation | |
6500 | * failed or the state ID is not currently valid. | |
6501 | */ | |
1cab0652 | 6502 | static int nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
7d974794 BS |
6503 | { |
6504 | struct nfs4_exception exception = { }; | |
6505 | int err; | |
6506 | do { | |
377e507d CL |
6507 | err = _nfs41_test_stateid(server, stateid); |
6508 | if (err != -NFS4ERR_DELAY) | |
6509 | break; | |
6510 | nfs4_handle_exception(server, err, &exception); | |
7d974794 BS |
6511 | } while (exception.retry); |
6512 | return err; | |
6513 | } | |
9aeda35f | 6514 | |
1cab0652 | 6515 | static int _nfs4_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f | 6516 | { |
9aeda35f | 6517 | struct nfs41_free_stateid_args args = { |
1cab0652 | 6518 | .stateid = stateid, |
9aeda35f BS |
6519 | }; |
6520 | struct nfs41_free_stateid_res res; | |
6521 | struct rpc_message msg = { | |
6522 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
6523 | .rpc_argp = &args, | |
6524 | .rpc_resp = &res, | |
6525 | }; | |
38527b15 | 6526 | int status; |
9aeda35f | 6527 | |
38527b15 | 6528 | dprintk("NFS call free_stateid %p\n", stateid); |
9d12b216 | 6529 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
8fe72bac | 6530 | nfs4_set_sequence_privileged(&args.seq_args); |
38527b15 | 6531 | status = nfs4_call_sync_sequence(server->client, server, &msg, |
8fe72bac | 6532 | &args.seq_args, &res.seq_res); |
38527b15 CL |
6533 | dprintk("NFS reply free_stateid: %d\n", status); |
6534 | return status; | |
9aeda35f BS |
6535 | } |
6536 | ||
38527b15 CL |
6537 | /** |
6538 | * nfs41_free_stateid - perform a FREE_STATEID operation | |
6539 | * | |
6540 | * @server: server / transport on which to perform the operation | |
6541 | * @stateid: state ID to release | |
6542 | * | |
6543 | * Returns NFS_OK if the server freed "stateid". Otherwise a | |
6544 | * negative NFS4ERR value is returned. | |
6545 | */ | |
1cab0652 | 6546 | static int nfs41_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f BS |
6547 | { |
6548 | struct nfs4_exception exception = { }; | |
6549 | int err; | |
6550 | do { | |
377e507d CL |
6551 | err = _nfs4_free_stateid(server, stateid); |
6552 | if (err != -NFS4ERR_DELAY) | |
6553 | break; | |
6554 | nfs4_handle_exception(server, err, &exception); | |
9aeda35f BS |
6555 | } while (exception.retry); |
6556 | return err; | |
6557 | } | |
36281caa TM |
6558 | |
6559 | static bool nfs41_match_stateid(const nfs4_stateid *s1, | |
6560 | const nfs4_stateid *s2) | |
6561 | { | |
2d2f24ad | 6562 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
6563 | return false; |
6564 | ||
2d2f24ad | 6565 | if (s1->seqid == s2->seqid) |
36281caa | 6566 | return true; |
2d2f24ad | 6567 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
6568 | return true; |
6569 | ||
6570 | return false; | |
6571 | } | |
6572 | ||
557134a3 AA |
6573 | #endif /* CONFIG_NFS_V4_1 */ |
6574 | ||
36281caa TM |
6575 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
6576 | const nfs4_stateid *s2) | |
6577 | { | |
f597c537 | 6578 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
6579 | } |
6580 | ||
6581 | ||
17280175 | 6582 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 6583 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 6584 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
6585 | .recover_open = nfs4_open_reclaim, |
6586 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 6587 | .establish_clid = nfs4_init_clientid, |
90a16617 | 6588 | .get_clid_cred = nfs4_get_setclientid_cred, |
05f4c350 | 6589 | .detect_trunking = nfs40_discover_server_trunking, |
1da177e4 LT |
6590 | }; |
6591 | ||
591d71cb | 6592 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 6593 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
6594 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
6595 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
6596 | .recover_open = nfs4_open_reclaim, | |
6597 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 6598 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6599 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 6600 | .reclaim_complete = nfs41_proc_reclaim_complete, |
05f4c350 | 6601 | .detect_trunking = nfs41_discover_server_trunking, |
591d71cb AA |
6602 | }; |
6603 | #endif /* CONFIG_NFS_V4_1 */ | |
6604 | ||
17280175 | 6605 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
6606 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
6607 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
6608 | .recover_open = nfs4_open_expired, | |
6609 | .recover_lock = nfs4_lock_expired, | |
6610 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 6611 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
6612 | }; |
6613 | ||
6614 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 6615 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 6616 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 6617 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
6618 | .recover_open = nfs41_open_expired, |
6619 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 6620 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6621 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 6622 | }; |
591d71cb | 6623 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 6624 | |
17280175 | 6625 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 6626 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 6627 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 6628 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
6629 | }; |
6630 | ||
6631 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 6632 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 6633 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 6634 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 6635 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
6636 | }; |
6637 | #endif | |
6638 | ||
97dc1359 TM |
6639 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
6640 | .minor_version = 0, | |
6641 | .call_sync = _nfs4_call_sync, | |
36281caa | 6642 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 6643 | .find_root_sec = nfs4_find_root_sec, |
c48f4f35 TM |
6644 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
6645 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
6646 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
6647 | }; |
6648 | ||
6649 | #if defined(CONFIG_NFS_V4_1) | |
6650 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
6651 | .minor_version = 1, | |
104287cd | 6652 | .call_sync = nfs4_call_sync_sequence, |
36281caa | 6653 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 6654 | .find_root_sec = nfs41_find_root_sec, |
c48f4f35 TM |
6655 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
6656 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
6657 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
6658 | }; |
6659 | #endif | |
6660 | ||
97dc1359 TM |
6661 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
6662 | [0] = &nfs_v4_0_minor_ops, | |
6663 | #if defined(CONFIG_NFS_V4_1) | |
6664 | [1] = &nfs_v4_1_minor_ops, | |
6665 | #endif | |
6666 | }; | |
6667 | ||
73a79706 BS |
6668 | const struct inode_operations nfs4_dir_inode_operations = { |
6669 | .create = nfs_create, | |
6670 | .lookup = nfs_lookup, | |
6671 | .atomic_open = nfs_atomic_open, | |
6672 | .link = nfs_link, | |
6673 | .unlink = nfs_unlink, | |
6674 | .symlink = nfs_symlink, | |
6675 | .mkdir = nfs_mkdir, | |
6676 | .rmdir = nfs_rmdir, | |
6677 | .mknod = nfs_mknod, | |
6678 | .rename = nfs_rename, | |
6679 | .permission = nfs_permission, | |
6680 | .getattr = nfs_getattr, | |
6681 | .setattr = nfs_setattr, | |
6682 | .getxattr = generic_getxattr, | |
6683 | .setxattr = generic_setxattr, | |
6684 | .listxattr = generic_listxattr, | |
6685 | .removexattr = generic_removexattr, | |
6686 | }; | |
6687 | ||
92e1d5be | 6688 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
6689 | .permission = nfs_permission, |
6690 | .getattr = nfs_getattr, | |
6691 | .setattr = nfs_setattr, | |
64c2ce8b AK |
6692 | .getxattr = generic_getxattr, |
6693 | .setxattr = generic_setxattr, | |
6694 | .listxattr = generic_listxattr, | |
6695 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
6696 | }; |
6697 | ||
509de811 | 6698 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
6699 | .version = 4, /* protocol version */ |
6700 | .dentry_ops = &nfs4_dentry_operations, | |
6701 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 6702 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 6703 | .file_ops = &nfs4_file_operations, |
1da177e4 | 6704 | .getroot = nfs4_proc_get_root, |
281cad46 | 6705 | .submount = nfs4_submount, |
ff9099f2 | 6706 | .try_mount = nfs4_try_mount, |
1da177e4 LT |
6707 | .getattr = nfs4_proc_getattr, |
6708 | .setattr = nfs4_proc_setattr, | |
6709 | .lookup = nfs4_proc_lookup, | |
6710 | .access = nfs4_proc_access, | |
6711 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
6712 | .create = nfs4_proc_create, |
6713 | .remove = nfs4_proc_remove, | |
6714 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 6715 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 LT |
6716 | .unlink_done = nfs4_proc_unlink_done, |
6717 | .rename = nfs4_proc_rename, | |
d3d4152a | 6718 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 6719 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 6720 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
6721 | .link = nfs4_proc_link, |
6722 | .symlink = nfs4_proc_symlink, | |
6723 | .mkdir = nfs4_proc_mkdir, | |
6724 | .rmdir = nfs4_proc_remove, | |
6725 | .readdir = nfs4_proc_readdir, | |
6726 | .mknod = nfs4_proc_mknod, | |
6727 | .statfs = nfs4_proc_statfs, | |
6728 | .fsinfo = nfs4_proc_fsinfo, | |
6729 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 6730 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
6731 | .decode_dirent = nfs4_decode_dirent, |
6732 | .read_setup = nfs4_proc_read_setup, | |
1abb5088 | 6733 | .read_pageio_init = pnfs_pageio_init_read, |
ea7c3303 | 6734 | .read_rpc_prepare = nfs4_proc_read_rpc_prepare, |
ec06c096 | 6735 | .read_done = nfs4_read_done, |
1da177e4 | 6736 | .write_setup = nfs4_proc_write_setup, |
57208fa7 | 6737 | .write_pageio_init = pnfs_pageio_init_write, |
c6cb80d0 | 6738 | .write_rpc_prepare = nfs4_proc_write_rpc_prepare, |
788e7a89 | 6739 | .write_done = nfs4_write_done, |
1da177e4 | 6740 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 6741 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 6742 | .commit_done = nfs4_commit_done, |
1da177e4 | 6743 | .lock = nfs4_proc_lock, |
e50a1c2e | 6744 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 6745 | .close_context = nfs4_close_context, |
2b484297 | 6746 | .open_context = nfs4_atomic_open, |
011e2a7f | 6747 | .have_delegation = nfs4_have_delegation, |
57ec14c5 | 6748 | .return_delegation = nfs4_inode_return_delegation, |
6663ee7f | 6749 | .alloc_client = nfs4_alloc_client, |
45a52a02 | 6750 | .init_client = nfs4_init_client, |
cdb7eced | 6751 | .free_client = nfs4_free_client, |
1179acc6 BS |
6752 | .create_server = nfs4_create_server, |
6753 | .clone_server = nfs_clone_server, | |
1da177e4 LT |
6754 | }; |
6755 | ||
64c2ce8b AK |
6756 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
6757 | .prefix = XATTR_NAME_NFSV4_ACL, | |
6758 | .list = nfs4_xattr_list_nfs4_acl, | |
6759 | .get = nfs4_xattr_get_nfs4_acl, | |
6760 | .set = nfs4_xattr_set_nfs4_acl, | |
6761 | }; | |
6762 | ||
6763 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
6764 | &nfs4_xattr_nfs4_acl_handler, | |
6765 | NULL | |
6766 | }; | |
6767 | ||
1da177e4 LT |
6768 | /* |
6769 | * Local variables: | |
6770 | * c-basic-offset: 8 | |
6771 | * End: | |
6772 | */ |