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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/nfs/nfs4proc.c | |
3 | * | |
4 | * Client-side procedure declarations for NFSv4. | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
36 | */ | |
37 | ||
38 | #include <linux/mm.h> | |
1da177e4 LT |
39 | #include <linux/delay.h> |
40 | #include <linux/errno.h> | |
41 | #include <linux/string.h> | |
652f89f6 TM |
42 | #include <linux/ratelimit.h> |
43 | #include <linux/printk.h> | |
5a0e3ad6 | 44 | #include <linux/slab.h> |
1da177e4 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 | ||
b75ad4cd TM |
404 | if (nfs41_wake_and_assign_slot(tbl, res->sr_slot)) { |
405 | send_new_highest_used_slotid = false; | |
406 | goto out_unlock; | |
407 | } | |
f4af6e2a | 408 | nfs4_free_slot(tbl, res->sr_slot); |
c10e4498 TM |
409 | |
410 | if (tbl->highest_used_slotid != NFS4_NO_SLOT) | |
411 | send_new_highest_used_slotid = false; | |
b75ad4cd | 412 | out_unlock: |
35dc1d74 | 413 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 414 | res->sr_slot = NULL; |
c10e4498 TM |
415 | if (send_new_highest_used_slotid) |
416 | nfs41_server_notify_highest_slotid_update(session->clp); | |
13615871 AA |
417 | } |
418 | ||
14516c3a | 419 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c | 420 | { |
e3725ec0 | 421 | struct nfs4_session *session; |
933602e3 | 422 | struct nfs4_slot *slot; |
b0df806c | 423 | unsigned long timestamp; |
14516c3a | 424 | struct nfs_client *clp; |
b0df806c AA |
425 | |
426 | /* | |
427 | * sr_status remains 1 if an RPC level error occurred. The server | |
428 | * may or may not have processed the sequence operation.. | |
429 | * Proceed as if the server received and processed the sequence | |
430 | * operation. | |
431 | */ | |
432 | if (res->sr_status == 1) | |
433 | res->sr_status = NFS_OK; | |
434 | ||
468f8613 BS |
435 | /* don't increment the sequence number if the task wasn't sent */ |
436 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
437 | goto out; |
438 | ||
933602e3 | 439 | slot = res->sr_slot; |
e3725ec0 | 440 | session = slot->table->session; |
933602e3 | 441 | |
691daf3b | 442 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
443 | switch (res->sr_status) { |
444 | case 0: | |
b0df806c | 445 | /* Update the slot's sequence and clientid lease timer */ |
933602e3 TM |
446 | ++slot->seq_nr; |
447 | timestamp = slot->renewal_time; | |
e3725ec0 | 448 | clp = session->clp; |
452e9352 | 449 | do_renew_lease(clp, timestamp); |
0629e370 | 450 | /* Check sequence flags */ |
b4410c2f TM |
451 | if (res->sr_status_flags != 0) |
452 | nfs4_schedule_lease_recovery(clp); | |
464ee9f9 | 453 | nfs41_update_target_slotid(slot->table, slot, res); |
14516c3a TM |
454 | break; |
455 | case -NFS4ERR_DELAY: | |
456 | /* The server detected a resend of the RPC call and | |
457 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
458 | * of RFC5661. | |
459 | */ | |
df2fabff | 460 | dprintk("%s: slot=%u seq=%u: Operation in progress\n", |
dfb4f309 | 461 | __func__, |
df2fabff | 462 | slot->slot_nr, |
933602e3 | 463 | slot->seq_nr); |
14516c3a TM |
464 | goto out_retry; |
465 | default: | |
466 | /* Just update the slot sequence no. */ | |
933602e3 | 467 | ++slot->seq_nr; |
b0df806c AA |
468 | } |
469 | out: | |
470 | /* The session may be reset by one of the error handlers. */ | |
471 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 472 | nfs41_sequence_free_slot(res); |
14516c3a TM |
473 | return 1; |
474 | out_retry: | |
d05dd4e9 | 475 | if (!rpc_restart_call(task)) |
14516c3a TM |
476 | goto out; |
477 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
478 | return 0; | |
b0df806c AA |
479 | } |
480 | ||
14516c3a TM |
481 | static int nfs4_sequence_done(struct rpc_task *task, |
482 | struct nfs4_sequence_res *res) | |
df896455 | 483 | { |
e3725ec0 | 484 | if (res->sr_slot == NULL) |
14516c3a TM |
485 | return 1; |
486 | return nfs41_sequence_done(task, res); | |
df896455 TM |
487 | } |
488 | ||
9d12b216 TM |
489 | static void nfs41_init_sequence(struct nfs4_sequence_args *args, |
490 | struct nfs4_sequence_res *res, int cache_reply) | |
491 | { | |
2b2fa717 | 492 | args->sa_slot = NULL; |
9d12b216 | 493 | args->sa_cache_this = 0; |
8fe72bac | 494 | args->sa_privileged = 0; |
9d12b216 TM |
495 | if (cache_reply) |
496 | args->sa_cache_this = 1; | |
9d12b216 TM |
497 | res->sr_slot = NULL; |
498 | } | |
499 | ||
8fe72bac TM |
500 | static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args) |
501 | { | |
502 | args->sa_privileged = 1; | |
503 | } | |
504 | ||
dc70d7b3 | 505 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
506 | struct nfs4_sequence_args *args, |
507 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
508 | struct rpc_task *task) |
509 | { | |
fbcd4abc AA |
510 | struct nfs4_slot *slot; |
511 | struct nfs4_slot_table *tbl; | |
fbcd4abc AA |
512 | |
513 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 514 | /* slot already allocated? */ |
dfb4f309 | 515 | if (res->sr_slot != NULL) |
d9afbd1b | 516 | goto out_success; |
ce5039c1 | 517 | |
fbcd4abc AA |
518 | tbl = &session->fc_slot_table; |
519 | ||
69d206b5 TM |
520 | task->tk_timeout = 0; |
521 | ||
fbcd4abc | 522 | spin_lock(&tbl->slot_tbl_lock); |
a2118c33 | 523 | if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) && |
8fe72bac | 524 | !args->sa_privileged) { |
0b1c8fc4 | 525 | /* The state manager will wait until the slot table is empty */ |
0b1c8fc4 | 526 | dprintk("%s session is draining\n", __func__); |
7b939a3f | 527 | goto out_sleep; |
689cf5c1 AB |
528 | } |
529 | ||
2dc03b7f | 530 | slot = nfs4_alloc_slot(tbl); |
69d206b5 TM |
531 | if (IS_ERR(slot)) { |
532 | /* If out of memory, try again in 1/4 second */ | |
533 | if (slot == ERR_PTR(-ENOMEM)) | |
534 | task->tk_timeout = HZ >> 2; | |
fbcd4abc | 535 | dprintk("<-- %s: no free slots\n", __func__); |
7b939a3f | 536 | goto out_sleep; |
fbcd4abc AA |
537 | } |
538 | spin_unlock(&tbl->slot_tbl_lock); | |
539 | ||
2b2fa717 | 540 | args->sa_slot = slot; |
fbcd4abc | 541 | |
2dc03b7f TM |
542 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, |
543 | slot->slot_nr, slot->seq_nr); | |
fbcd4abc | 544 | |
dfb4f309 | 545 | res->sr_slot = slot; |
2a6e26cd | 546 | res->sr_status_flags = 0; |
fbcd4abc AA |
547 | /* |
548 | * sr_status is only set in decode_sequence, and so will remain | |
549 | * set to 1 if an rpc level failure occurs. | |
550 | */ | |
551 | res->sr_status = 1; | |
d9afbd1b TM |
552 | out_success: |
553 | rpc_call_start(task); | |
ce5039c1 | 554 | return 0; |
7b939a3f | 555 | out_sleep: |
8fe72bac TM |
556 | /* Privileged tasks are queued with top priority */ |
557 | if (args->sa_privileged) | |
1e1093c7 TM |
558 | rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, |
559 | NULL, RPC_PRIORITY_PRIVILEGED); | |
560 | else | |
561 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
7b939a3f TM |
562 | spin_unlock(&tbl->slot_tbl_lock); |
563 | return -EAGAIN; | |
ce5039c1 | 564 | } |
dc70d7b3 | 565 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 566 | |
035168ab | 567 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
568 | struct nfs4_sequence_args *args, |
569 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
570 | struct rpc_task *task) |
571 | { | |
035168ab | 572 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
573 | int ret = 0; |
574 | ||
d9afbd1b TM |
575 | if (session == NULL) { |
576 | rpc_call_start(task); | |
035168ab | 577 | goto out; |
d9afbd1b | 578 | } |
035168ab | 579 | |
df2fabff | 580 | dprintk("--> %s clp %p session %p sr_slot %d\n", |
dfb4f309 | 581 | __func__, session->clp, session, res->sr_slot ? |
df2fabff | 582 | res->sr_slot->slot_nr : -1); |
ce5039c1 | 583 | |
9d12b216 | 584 | ret = nfs41_setup_sequence(session, args, res, task); |
ce5039c1 AA |
585 | out: |
586 | dprintk("<-- %s status=%d\n", __func__, ret); | |
587 | return ret; | |
588 | } | |
589 | ||
590 | struct nfs41_call_sync_data { | |
035168ab | 591 | const struct nfs_server *seq_server; |
ce5039c1 AA |
592 | struct nfs4_sequence_args *seq_args; |
593 | struct nfs4_sequence_res *seq_res; | |
ce5039c1 AA |
594 | }; |
595 | ||
596 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
597 | { | |
598 | struct nfs41_call_sync_data *data = calldata; | |
6ba7db34 | 599 | struct nfs4_session *session = nfs4_get_session(data->seq_server); |
ce5039c1 | 600 | |
035168ab TM |
601 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
602 | ||
d9afbd1b | 603 | nfs41_setup_sequence(session, data->seq_args, data->seq_res, task); |
ce5039c1 AA |
604 | } |
605 | ||
69ab40c4 AA |
606 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
607 | { | |
608 | struct nfs41_call_sync_data *data = calldata; | |
609 | ||
14516c3a | 610 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
611 | } |
612 | ||
17280175 | 613 | static const struct rpc_call_ops nfs41_call_sync_ops = { |
ce5039c1 | 614 | .rpc_call_prepare = nfs41_call_sync_prepare, |
69ab40c4 | 615 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
616 | }; |
617 | ||
7c513058 BS |
618 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
619 | struct nfs_server *server, | |
ce5039c1 AA |
620 | struct rpc_message *msg, |
621 | struct nfs4_sequence_args *args, | |
8fe72bac | 622 | struct nfs4_sequence_res *res) |
ce5039c1 AA |
623 | { |
624 | int ret; | |
625 | struct rpc_task *task; | |
626 | struct nfs41_call_sync_data data = { | |
035168ab | 627 | .seq_server = server, |
ce5039c1 AA |
628 | .seq_args = args, |
629 | .seq_res = res, | |
ce5039c1 AA |
630 | }; |
631 | struct rpc_task_setup task_setup = { | |
7c513058 | 632 | .rpc_client = clnt, |
ce5039c1 AA |
633 | .rpc_message = msg, |
634 | .callback_ops = &nfs41_call_sync_ops, | |
635 | .callback_data = &data | |
636 | }; | |
637 | ||
ce5039c1 AA |
638 | task = rpc_run_task(&task_setup); |
639 | if (IS_ERR(task)) | |
640 | ret = PTR_ERR(task); | |
641 | else { | |
642 | ret = task->tk_status; | |
643 | rpc_put_task(task); | |
644 | } | |
645 | return ret; | |
646 | } | |
647 | ||
df896455 | 648 | #else |
8fe72bac | 649 | static |
9d12b216 TM |
650 | void nfs41_init_sequence(struct nfs4_sequence_args *args, |
651 | struct nfs4_sequence_res *res, int cache_reply) | |
652 | { | |
653 | } | |
654 | ||
8fe72bac TM |
655 | static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args) |
656 | { | |
657 | } | |
658 | ||
659 | ||
14516c3a TM |
660 | static int nfs4_sequence_done(struct rpc_task *task, |
661 | struct nfs4_sequence_res *res) | |
df896455 | 662 | { |
14516c3a | 663 | return 1; |
df896455 | 664 | } |
cccef3b9 AA |
665 | #endif /* CONFIG_NFS_V4_1 */ |
666 | ||
fd0c0953 | 667 | static |
7c513058 BS |
668 | int _nfs4_call_sync(struct rpc_clnt *clnt, |
669 | struct nfs_server *server, | |
cccef3b9 AA |
670 | struct rpc_message *msg, |
671 | struct nfs4_sequence_args *args, | |
fd0c0953 | 672 | struct nfs4_sequence_res *res) |
cccef3b9 | 673 | { |
7c513058 | 674 | return rpc_call_sync(clnt, msg, 0); |
cccef3b9 AA |
675 | } |
676 | ||
fd0c0953 | 677 | static |
7c513058 BS |
678 | int nfs4_call_sync(struct rpc_clnt *clnt, |
679 | struct nfs_server *server, | |
e73b83f2 BS |
680 | struct rpc_message *msg, |
681 | struct nfs4_sequence_args *args, | |
682 | struct nfs4_sequence_res *res, | |
683 | int cache_reply) | |
684 | { | |
fd0c0953 | 685 | nfs41_init_sequence(args, res, cache_reply); |
7c513058 | 686 | return server->nfs_client->cl_mvops->call_sync(clnt, server, msg, |
fd0c0953 | 687 | args, res); |
e73b83f2 | 688 | } |
cccef3b9 | 689 | |
38478b24 | 690 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 691 | { |
38478b24 | 692 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 693 | |
38478b24 | 694 | spin_lock(&dir->i_lock); |
359d7d1c | 695 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA; |
a9a4a87a | 696 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 697 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 698 | dir->i_version = cinfo->after; |
38478b24 | 699 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
700 | } |
701 | ||
e56e0b78 | 702 | struct nfs4_opendata { |
c6d00e63 | 703 | struct kref kref; |
e56e0b78 TM |
704 | struct nfs_openargs o_arg; |
705 | struct nfs_openres o_res; | |
cdd4e68b TM |
706 | struct nfs_open_confirmargs c_arg; |
707 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
708 | struct nfs4_string owner_name; |
709 | struct nfs4_string group_name; | |
e56e0b78 | 710 | struct nfs_fattr f_attr; |
e56e0b78 | 711 | struct dentry *dir; |
82a2c1b7 | 712 | struct dentry *dentry; |
e56e0b78 | 713 | struct nfs4_state_owner *owner; |
aac00a8d | 714 | struct nfs4_state *state; |
e56e0b78 | 715 | struct iattr attrs; |
26e976a8 | 716 | unsigned long timestamp; |
3e309914 | 717 | unsigned int rpc_done : 1; |
24ac23ab TM |
718 | int rpc_status; |
719 | int cancelled; | |
e56e0b78 TM |
720 | }; |
721 | ||
2ced46c2 TM |
722 | |
723 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
724 | { | |
725 | p->o_res.f_attr = &p->f_attr; | |
c1d51931 TM |
726 | p->o_res.seqid = p->o_arg.seqid; |
727 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 | 728 | p->o_res.server = p->o_arg.server; |
5f657530 | 729 | p->o_res.access_request = p->o_arg.access; |
2ced46c2 | 730 | nfs_fattr_init(&p->f_attr); |
6926afd1 | 731 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
732 | } |
733 | ||
82a2c1b7 | 734 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 735 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be TM |
736 | const struct iattr *attrs, |
737 | gfp_t gfp_mask) | |
e56e0b78 | 738 | { |
82a2c1b7 | 739 | struct dentry *parent = dget_parent(dentry); |
e56e0b78 TM |
740 | struct inode *dir = parent->d_inode; |
741 | struct nfs_server *server = NFS_SERVER(dir); | |
742 | struct nfs4_opendata *p; | |
743 | ||
8535b2be | 744 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
745 | if (p == NULL) |
746 | goto err; | |
8535b2be | 747 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 TM |
748 | if (p->o_arg.seqid == NULL) |
749 | goto err_free; | |
82a2c1b7 AV |
750 | nfs_sb_active(dentry->d_sb); |
751 | p->dentry = dget(dentry); | |
e56e0b78 TM |
752 | p->dir = parent; |
753 | p->owner = sp; | |
754 | atomic_inc(&sp->so_count); | |
755 | p->o_arg.fh = NFS_FH(dir); | |
dc0b027d TM |
756 | p->o_arg.open_flags = flags; |
757 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
ae2bb032 WAA |
758 | /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS |
759 | * will return permission denied for all bits until close */ | |
760 | if (!(flags & O_EXCL)) { | |
761 | /* ask server to check for all possible rights as results | |
762 | * are cached */ | |
763 | p->o_arg.access = NFS4_ACCESS_READ | NFS4_ACCESS_MODIFY | | |
764 | NFS4_ACCESS_EXTEND | NFS4_ACCESS_EXECUTE; | |
ae2bb032 | 765 | } |
7539bbab | 766 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
95b72eb0 TM |
767 | p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time); |
768 | p->o_arg.id.uniquifier = sp->so_seqid.owner_id; | |
82a2c1b7 | 769 | p->o_arg.name = &dentry->d_name; |
e56e0b78 TM |
770 | p->o_arg.server = server; |
771 | p->o_arg.bitmask = server->attr_bitmask; | |
1549210f | 772 | p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0]; |
e56e0b78 | 773 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; |
536e43d1 | 774 | if (attrs != NULL && attrs->ia_valid != 0) { |
cd93710e | 775 | __be32 verf[2]; |
d77d76ff | 776 | |
e56e0b78 TM |
777 | p->o_arg.u.attrs = &p->attrs; |
778 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
cd93710e CL |
779 | |
780 | verf[0] = jiffies; | |
781 | verf[1] = current->pid; | |
782 | memcpy(p->o_arg.u.verifier.data, verf, | |
783 | sizeof(p->o_arg.u.verifier.data)); | |
e56e0b78 | 784 | } |
cdd4e68b TM |
785 | p->c_arg.fh = &p->o_res.fh; |
786 | p->c_arg.stateid = &p->o_res.stateid; | |
787 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 788 | nfs4_init_opendata_res(p); |
c6d00e63 | 789 | kref_init(&p->kref); |
e56e0b78 TM |
790 | return p; |
791 | err_free: | |
792 | kfree(p); | |
793 | err: | |
794 | dput(parent); | |
795 | return NULL; | |
796 | } | |
797 | ||
c6d00e63 | 798 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 799 | { |
c6d00e63 TM |
800 | struct nfs4_opendata *p = container_of(kref, |
801 | struct nfs4_opendata, kref); | |
82a2c1b7 | 802 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
803 | |
804 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
805 | if (p->state != NULL) |
806 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
807 | nfs4_put_state_owner(p->owner); |
808 | dput(p->dir); | |
82a2c1b7 AV |
809 | dput(p->dentry); |
810 | nfs_sb_deactive(sb); | |
6926afd1 | 811 | nfs_fattr_free_names(&p->f_attr); |
c6d00e63 TM |
812 | kfree(p); |
813 | } | |
814 | ||
815 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
816 | { | |
817 | if (p != NULL) | |
818 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
819 | } |
820 | ||
06f814a3 TM |
821 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
822 | { | |
06f814a3 TM |
823 | int ret; |
824 | ||
06f814a3 | 825 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
826 | return ret; |
827 | } | |
828 | ||
dc0b027d | 829 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
830 | { |
831 | int ret = 0; | |
dc0b027d | 832 | |
536e43d1 | 833 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
834 | goto out; |
835 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 836 | case FMODE_READ: |
88069f77 TM |
837 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
838 | && state->n_rdonly != 0; | |
6ee41268 TM |
839 | break; |
840 | case FMODE_WRITE: | |
88069f77 TM |
841 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
842 | && state->n_wronly != 0; | |
6ee41268 TM |
843 | break; |
844 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
845 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
846 | && state->n_rdwr != 0; | |
6ee41268 | 847 | } |
dc0b027d | 848 | out: |
6ee41268 TM |
849 | return ret; |
850 | } | |
851 | ||
dc0b027d | 852 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 853 | { |
652f89f6 TM |
854 | if (delegation == NULL) |
855 | return 0; | |
dc0b027d | 856 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 857 | return 0; |
15c831bf | 858 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 859 | return 0; |
b7391f44 | 860 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
861 | return 1; |
862 | } | |
863 | ||
dc0b027d | 864 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 865 | { |
dc0b027d | 866 | switch (fmode) { |
e7616923 TM |
867 | case FMODE_WRITE: |
868 | state->n_wronly++; | |
869 | break; | |
870 | case FMODE_READ: | |
871 | state->n_rdonly++; | |
872 | break; | |
873 | case FMODE_READ|FMODE_WRITE: | |
874 | state->n_rdwr++; | |
875 | } | |
dc0b027d | 876 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
877 | } |
878 | ||
dc0b027d | 879 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
880 | { |
881 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
f597c537 TM |
882 | nfs4_stateid_copy(&state->stateid, stateid); |
883 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
dc0b027d | 884 | switch (fmode) { |
003707c7 TM |
885 | case FMODE_READ: |
886 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
887 | break; | |
888 | case FMODE_WRITE: | |
889 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
890 | break; | |
891 | case FMODE_READ|FMODE_WRITE: | |
892 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
893 | } | |
e7616923 TM |
894 | } |
895 | ||
dc0b027d | 896 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 897 | { |
8bda4e4c | 898 | write_seqlock(&state->seqlock); |
dc0b027d | 899 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 900 | write_sequnlock(&state->seqlock); |
003707c7 TM |
901 | } |
902 | ||
dc0b027d | 903 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 904 | { |
8bda4e4c TM |
905 | /* |
906 | * Protect the call to nfs4_state_set_mode_locked and | |
907 | * serialise the stateid update | |
908 | */ | |
909 | write_seqlock(&state->seqlock); | |
003707c7 | 910 | if (deleg_stateid != NULL) { |
f597c537 | 911 | nfs4_stateid_copy(&state->stateid, deleg_stateid); |
003707c7 TM |
912 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
913 | } | |
914 | if (open_stateid != NULL) | |
dc0b027d | 915 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
916 | write_sequnlock(&state->seqlock); |
917 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 918 | update_open_stateflags(state, fmode); |
ec073428 | 919 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
920 | } |
921 | ||
dc0b027d | 922 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
923 | { |
924 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
925 | struct nfs_delegation *deleg_cur; | |
926 | int ret = 0; | |
927 | ||
dc0b027d | 928 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
929 | |
930 | rcu_read_lock(); | |
931 | deleg_cur = rcu_dereference(nfsi->delegation); | |
932 | if (deleg_cur == NULL) | |
933 | goto no_delegation; | |
934 | ||
935 | spin_lock(&deleg_cur->lock); | |
936 | if (nfsi->delegation != deleg_cur || | |
dc0b027d | 937 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
938 | goto no_delegation_unlock; |
939 | ||
940 | if (delegation == NULL) | |
941 | delegation = &deleg_cur->stateid; | |
f597c537 | 942 | else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) |
34310430 TM |
943 | goto no_delegation_unlock; |
944 | ||
b7391f44 | 945 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 946 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
947 | ret = 1; |
948 | no_delegation_unlock: | |
949 | spin_unlock(&deleg_cur->lock); | |
950 | no_delegation: | |
951 | rcu_read_unlock(); | |
952 | ||
953 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 954 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
955 | ret = 1; |
956 | } | |
957 | ||
958 | return ret; | |
959 | } | |
960 | ||
961 | ||
dc0b027d | 962 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
963 | { |
964 | struct nfs_delegation *delegation; | |
965 | ||
966 | rcu_read_lock(); | |
967 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 968 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
969 | rcu_read_unlock(); |
970 | return; | |
971 | } | |
972 | rcu_read_unlock(); | |
57ec14c5 | 973 | nfs4_inode_return_delegation(inode); |
aac00a8d TM |
974 | } |
975 | ||
6ee41268 | 976 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
977 | { |
978 | struct nfs4_state *state = opendata->state; | |
979 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
980 | struct nfs_delegation *delegation; | |
536e43d1 | 981 | int open_mode = opendata->o_arg.open_flags & (O_EXCL|O_TRUNC); |
dc0b027d | 982 | fmode_t fmode = opendata->o_arg.fmode; |
aac00a8d TM |
983 | nfs4_stateid stateid; |
984 | int ret = -EAGAIN; | |
985 | ||
aac00a8d | 986 | for (;;) { |
dc0b027d | 987 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 988 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
989 | if (can_open_cached(state, fmode, open_mode)) { |
990 | update_open_stateflags(state, fmode); | |
6ee41268 | 991 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
992 | goto out_return_state; |
993 | } | |
994 | spin_unlock(&state->owner->so_lock); | |
995 | } | |
34310430 TM |
996 | rcu_read_lock(); |
997 | delegation = rcu_dereference(nfsi->delegation); | |
652f89f6 | 998 | if (!can_open_delegated(delegation, fmode)) { |
34310430 | 999 | rcu_read_unlock(); |
aac00a8d | 1000 | break; |
34310430 | 1001 | } |
aac00a8d | 1002 | /* Save the delegation */ |
f597c537 | 1003 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1004 | rcu_read_unlock(); |
af22f94a | 1005 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
1006 | if (ret != 0) |
1007 | goto out; | |
1008 | ret = -EAGAIN; | |
34310430 TM |
1009 | |
1010 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1011 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1012 | goto out_return_state; |
aac00a8d | 1013 | } |
aac00a8d TM |
1014 | out: |
1015 | return ERR_PTR(ret); | |
1016 | out_return_state: | |
1017 | atomic_inc(&state->count); | |
1018 | return state; | |
1019 | } | |
1020 | ||
e23008ec AA |
1021 | static void |
1022 | nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state) | |
1023 | { | |
1024 | struct nfs_client *clp = NFS_SERVER(state->inode)->nfs_client; | |
1025 | struct nfs_delegation *delegation; | |
1026 | int delegation_flags = 0; | |
1027 | ||
1028 | rcu_read_lock(); | |
1029 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
1030 | if (delegation) | |
1031 | delegation_flags = delegation->flags; | |
1032 | rcu_read_unlock(); | |
1033 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) { | |
1034 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " | |
1035 | "returning a delegation for " | |
1036 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
1037 | clp->cl_hostname); | |
1038 | } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) | |
1039 | nfs_inode_set_delegation(state->inode, | |
1040 | data->owner->so_cred, | |
1041 | &data->o_res); | |
1042 | else | |
1043 | nfs_inode_reclaim_delegation(state->inode, | |
1044 | data->owner->so_cred, | |
1045 | &data->o_res); | |
1046 | } | |
1047 | ||
1048 | /* | |
1049 | * Check the inode attributes against the CLAIM_PREVIOUS returned attributes | |
1050 | * and update the nfs4_state. | |
1051 | */ | |
1052 | static struct nfs4_state * | |
1053 | _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data) | |
1054 | { | |
1055 | struct inode *inode = data->state->inode; | |
1056 | struct nfs4_state *state = data->state; | |
1057 | int ret; | |
1058 | ||
1059 | if (!data->rpc_done) { | |
1060 | ret = data->rpc_status; | |
1061 | goto err; | |
1062 | } | |
1063 | ||
1064 | ret = -ESTALE; | |
1065 | if (!(data->f_attr.valid & NFS_ATTR_FATTR_TYPE) || | |
1066 | !(data->f_attr.valid & NFS_ATTR_FATTR_FILEID) || | |
1067 | !(data->f_attr.valid & NFS_ATTR_FATTR_CHANGE)) | |
1068 | goto err; | |
1069 | ||
1070 | ret = -ENOMEM; | |
1071 | state = nfs4_get_open_state(inode, data->owner); | |
1072 | if (state == NULL) | |
1073 | goto err; | |
1074 | ||
1075 | ret = nfs_refresh_inode(inode, &data->f_attr); | |
1076 | if (ret) | |
1077 | goto err; | |
1078 | ||
1079 | if (data->o_res.delegation_type != 0) | |
1080 | nfs4_opendata_check_deleg(data, state); | |
1081 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
1082 | data->o_arg.fmode); | |
1083 | ||
1084 | return state; | |
1085 | err: | |
1086 | return ERR_PTR(ret); | |
1087 | ||
1088 | } | |
1089 | ||
1090 | static struct nfs4_state * | |
1091 | _nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
24ac23ab TM |
1092 | { |
1093 | struct inode *inode; | |
1094 | struct nfs4_state *state = NULL; | |
1b370bc2 | 1095 | int ret; |
24ac23ab | 1096 | |
aac00a8d | 1097 | if (!data->rpc_done) { |
6ee41268 | 1098 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1099 | goto out; |
1100 | } | |
1101 | ||
1b370bc2 | 1102 | ret = -EAGAIN; |
24ac23ab | 1103 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1104 | goto err; |
24ac23ab | 1105 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 1106 | ret = PTR_ERR(inode); |
03f28e3a | 1107 | if (IS_ERR(inode)) |
1b370bc2 TM |
1108 | goto err; |
1109 | ret = -ENOMEM; | |
24ac23ab TM |
1110 | state = nfs4_get_open_state(inode, data->owner); |
1111 | if (state == NULL) | |
1b370bc2 | 1112 | goto err_put_inode; |
e23008ec AA |
1113 | if (data->o_res.delegation_type != 0) |
1114 | nfs4_opendata_check_deleg(data, state); | |
34310430 | 1115 | update_open_stateid(state, &data->o_res.stateid, NULL, |
dc0b027d | 1116 | data->o_arg.fmode); |
24ac23ab | 1117 | iput(inode); |
aac00a8d | 1118 | out: |
24ac23ab | 1119 | return state; |
1b370bc2 TM |
1120 | err_put_inode: |
1121 | iput(inode); | |
1122 | err: | |
1123 | return ERR_PTR(ret); | |
24ac23ab TM |
1124 | } |
1125 | ||
e23008ec AA |
1126 | static struct nfs4_state * |
1127 | nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
1128 | { | |
1129 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) | |
1130 | return _nfs4_opendata_reclaim_to_nfs4_state(data); | |
1131 | return _nfs4_opendata_to_nfs4_state(data); | |
1132 | } | |
1133 | ||
864472e9 TM |
1134 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1135 | { | |
1136 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1137 | struct nfs_open_context *ctx; | |
1138 | ||
1139 | spin_lock(&state->inode->i_lock); | |
1140 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1141 | if (ctx->state != state) | |
1142 | continue; | |
1143 | get_nfs_open_context(ctx); | |
1144 | spin_unlock(&state->inode->i_lock); | |
1145 | return ctx; | |
1146 | } | |
1147 | spin_unlock(&state->inode->i_lock); | |
1148 | return ERR_PTR(-ENOENT); | |
1149 | } | |
1150 | ||
6f220ed5 TM |
1151 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
1152 | { | |
1153 | struct nfs4_opendata *opendata; | |
1154 | ||
3d4ff43d | 1155 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, NULL, GFP_NOFS); |
6f220ed5 TM |
1156 | if (opendata == NULL) |
1157 | return ERR_PTR(-ENOMEM); | |
1158 | opendata->state = state; | |
1159 | atomic_inc(&state->count); | |
1160 | return opendata; | |
1161 | } | |
1162 | ||
dc0b027d | 1163 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1164 | { |
2ced46c2 | 1165 | struct nfs4_state *newstate; |
864472e9 TM |
1166 | int ret; |
1167 | ||
dc0b027d TM |
1168 | opendata->o_arg.open_flags = 0; |
1169 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1170 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1171 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1172 | nfs4_init_opendata_res(opendata); | |
b257957e | 1173 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1174 | if (ret != 0) |
1175 | return ret; | |
2ced46c2 | 1176 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1177 | if (IS_ERR(newstate)) |
1178 | return PTR_ERR(newstate); | |
643168c2 | 1179 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1180 | *res = newstate; |
864472e9 TM |
1181 | return 0; |
1182 | } | |
1183 | ||
1184 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1185 | { | |
864472e9 | 1186 | struct nfs4_state *newstate; |
864472e9 TM |
1187 | int ret; |
1188 | ||
1189 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1190 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
1191 | smp_rmb(); |
1192 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1193 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1194 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1195 | if (ret != 0) |
1196 | return ret; | |
2ced46c2 TM |
1197 | if (newstate != state) |
1198 | return -ESTALE; | |
864472e9 TM |
1199 | } |
1200 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1201 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1202 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1203 | if (ret != 0) |
1204 | return ret; | |
2ced46c2 TM |
1205 | if (newstate != state) |
1206 | return -ESTALE; | |
864472e9 TM |
1207 | } |
1208 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1209 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1210 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1211 | if (ret != 0) |
1212 | return ret; | |
2ced46c2 TM |
1213 | if (newstate != state) |
1214 | return -ESTALE; | |
864472e9 | 1215 | } |
1ac7e2fd TM |
1216 | /* |
1217 | * We may have performed cached opens for all three recoveries. | |
1218 | * Check if we need to update the current stateid. | |
1219 | */ | |
1220 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 1221 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 1222 | write_seqlock(&state->seqlock); |
1ac7e2fd | 1223 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 1224 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 1225 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1226 | } |
864472e9 TM |
1227 | return 0; |
1228 | } | |
1229 | ||
1da177e4 LT |
1230 | /* |
1231 | * OPEN_RECLAIM: | |
1232 | * reclaim state on the server after a reboot. | |
1da177e4 | 1233 | */ |
539cd03a | 1234 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1235 | { |
1ac7e2fd | 1236 | struct nfs_delegation *delegation; |
864472e9 | 1237 | struct nfs4_opendata *opendata; |
dc0b027d | 1238 | fmode_t delegation_type = 0; |
1da177e4 LT |
1239 | int status; |
1240 | ||
6f220ed5 TM |
1241 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1242 | if (IS_ERR(opendata)) | |
1243 | return PTR_ERR(opendata); | |
864472e9 TM |
1244 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
1245 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
1246 | rcu_read_lock(); |
1247 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1248 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1249 | delegation_type = delegation->type; |
1ac7e2fd | 1250 | rcu_read_unlock(); |
864472e9 TM |
1251 | opendata->o_arg.u.delegation_type = delegation_type; |
1252 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1253 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1254 | return status; |
1255 | } | |
1256 | ||
539cd03a | 1257 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1258 | { |
1259 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1260 | struct nfs4_exception exception = { }; | |
1261 | int err; | |
1262 | do { | |
539cd03a | 1263 | err = _nfs4_do_open_reclaim(ctx, state); |
168667c4 | 1264 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1265 | break; |
1266 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1267 | } while (exception.retry); |
1268 | return err; | |
1269 | } | |
1270 | ||
864472e9 TM |
1271 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1272 | { | |
1273 | struct nfs_open_context *ctx; | |
1274 | int ret; | |
1275 | ||
1276 | ctx = nfs4_state_find_open_context(state); | |
1277 | if (IS_ERR(ctx)) | |
1278 | return PTR_ERR(ctx); | |
539cd03a | 1279 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1280 | put_nfs_open_context(ctx); |
1281 | return ret; | |
1282 | } | |
1283 | ||
13437e12 | 1284 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 1285 | { |
e56e0b78 | 1286 | struct nfs4_opendata *opendata; |
864472e9 | 1287 | int ret; |
1da177e4 | 1288 | |
6f220ed5 TM |
1289 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1290 | if (IS_ERR(opendata)) | |
1291 | return PTR_ERR(opendata); | |
e56e0b78 | 1292 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
f597c537 | 1293 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); |
864472e9 | 1294 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 1295 | nfs4_opendata_put(opendata); |
864472e9 | 1296 | return ret; |
1da177e4 LT |
1297 | } |
1298 | ||
13437e12 | 1299 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
1300 | { |
1301 | struct nfs4_exception exception = { }; | |
539cd03a | 1302 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
1303 | int err; |
1304 | do { | |
13437e12 | 1305 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
1306 | switch (err) { |
1307 | case 0: | |
965b5d67 TM |
1308 | case -ENOENT: |
1309 | case -ESTALE: | |
1310 | goto out; | |
bcfa49f6 RL |
1311 | case -NFS4ERR_BADSESSION: |
1312 | case -NFS4ERR_BADSLOT: | |
1313 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1314 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1315 | case -NFS4ERR_DEADSESSION: | |
9f594791 | 1316 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); |
bcfa49f6 | 1317 | goto out; |
1da177e4 LT |
1318 | case -NFS4ERR_STALE_CLIENTID: |
1319 | case -NFS4ERR_STALE_STATEID: | |
1320 | case -NFS4ERR_EXPIRED: | |
1321 | /* Don't recall a delegation if it was lost */ | |
0400a6b0 | 1322 | nfs4_schedule_lease_recovery(server->nfs_client); |
965b5d67 TM |
1323 | goto out; |
1324 | case -ERESTARTSYS: | |
1325 | /* | |
1326 | * The show must go on: exit, but mark the | |
1327 | * stateid as needing recovery. | |
1328 | */ | |
a1d0b5ee | 1329 | case -NFS4ERR_DELEG_REVOKED: |
965b5d67 TM |
1330 | case -NFS4ERR_ADMIN_REVOKED: |
1331 | case -NFS4ERR_BAD_STATEID: | |
a1d0b5ee TM |
1332 | nfs_inode_find_state_and_recover(state->inode, |
1333 | stateid); | |
0400a6b0 | 1334 | nfs4_schedule_stateid_recovery(server, state); |
168667c4 TM |
1335 | case -EKEYEXPIRED: |
1336 | /* | |
1337 | * User RPCSEC_GSS context has expired. | |
1338 | * We cannot recover this stateid now, so | |
1339 | * skip it and allow recovery thread to | |
1340 | * proceed. | |
1341 | */ | |
965b5d67 TM |
1342 | case -ENOMEM: |
1343 | err = 0; | |
1344 | goto out; | |
1da177e4 LT |
1345 | } |
1346 | err = nfs4_handle_exception(server, err, &exception); | |
1347 | } while (exception.retry); | |
965b5d67 | 1348 | out: |
1da177e4 LT |
1349 | return err; |
1350 | } | |
1351 | ||
cdd4e68b TM |
1352 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1353 | { | |
1354 | struct nfs4_opendata *data = calldata; | |
1355 | ||
1356 | data->rpc_status = task->tk_status; | |
26e976a8 | 1357 | if (data->rpc_status == 0) { |
f597c537 | 1358 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 1359 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1360 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1361 | data->rpc_done = 1; |
26e976a8 | 1362 | } |
cdd4e68b TM |
1363 | } |
1364 | ||
1365 | static void nfs4_open_confirm_release(void *calldata) | |
1366 | { | |
1367 | struct nfs4_opendata *data = calldata; | |
1368 | struct nfs4_state *state = NULL; | |
1369 | ||
1370 | /* If this request hasn't been cancelled, do nothing */ | |
1371 | if (data->cancelled == 0) | |
1372 | goto out_free; | |
1373 | /* In case of error, no cleanup! */ | |
3e309914 | 1374 | if (!data->rpc_done) |
cdd4e68b | 1375 | goto out_free; |
cdd4e68b | 1376 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1377 | if (!IS_ERR(state)) |
643168c2 | 1378 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1379 | out_free: |
c6d00e63 | 1380 | nfs4_opendata_put(data); |
cdd4e68b TM |
1381 | } |
1382 | ||
1383 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1384 | .rpc_call_done = nfs4_open_confirm_done, |
1385 | .rpc_release = nfs4_open_confirm_release, | |
1386 | }; | |
1387 | ||
1388 | /* | |
1389 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1390 | */ | |
1391 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1392 | { | |
1393 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1394 | struct rpc_task *task; | |
5138fde0 TM |
1395 | struct rpc_message msg = { |
1396 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1397 | .rpc_argp = &data->c_arg, | |
1398 | .rpc_resp = &data->c_res, | |
1399 | .rpc_cred = data->owner->so_cred, | |
1400 | }; | |
c970aa85 TM |
1401 | struct rpc_task_setup task_setup_data = { |
1402 | .rpc_client = server->client, | |
5138fde0 | 1403 | .rpc_message = &msg, |
c970aa85 TM |
1404 | .callback_ops = &nfs4_open_confirm_ops, |
1405 | .callback_data = data, | |
101070ca | 1406 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1407 | .flags = RPC_TASK_ASYNC, |
1408 | }; | |
1da177e4 LT |
1409 | int status; |
1410 | ||
c6d00e63 | 1411 | kref_get(&data->kref); |
3e309914 TM |
1412 | data->rpc_done = 0; |
1413 | data->rpc_status = 0; | |
5138fde0 | 1414 | data->timestamp = jiffies; |
c970aa85 | 1415 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1416 | if (IS_ERR(task)) |
cdd4e68b | 1417 | return PTR_ERR(task); |
cdd4e68b TM |
1418 | status = nfs4_wait_for_completion_rpc_task(task); |
1419 | if (status != 0) { | |
1420 | data->cancelled = 1; | |
1421 | smp_wmb(); | |
1422 | } else | |
1423 | status = data->rpc_status; | |
e6b3c4db | 1424 | rpc_put_task(task); |
1da177e4 LT |
1425 | return status; |
1426 | } | |
1427 | ||
24ac23ab | 1428 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1429 | { |
24ac23ab TM |
1430 | struct nfs4_opendata *data = calldata; |
1431 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 1432 | |
24ac23ab TM |
1433 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
1434 | return; | |
aac00a8d TM |
1435 | /* |
1436 | * Check if we still need to send an OPEN call, or if we can use | |
1437 | * a delegation instead. | |
1438 | */ | |
1439 | if (data->state != NULL) { | |
1440 | struct nfs_delegation *delegation; | |
1441 | ||
dc0b027d | 1442 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1443 | goto out_no_action; |
aac00a8d TM |
1444 | rcu_read_lock(); |
1445 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
652f89f6 TM |
1446 | if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR && |
1447 | can_open_delegated(delegation, data->o_arg.fmode)) | |
1448 | goto unlock_no_action; | |
aac00a8d TM |
1449 | rcu_read_unlock(); |
1450 | } | |
95b72eb0 | 1451 | /* Update client id. */ |
1f0e890d | 1452 | data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; |
6f220ed5 | 1453 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 1454 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
e23008ec | 1455 | data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0]; |
6f220ed5 TM |
1456 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1457 | } | |
26e976a8 | 1458 | data->timestamp = jiffies; |
035168ab | 1459 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 1460 | &data->o_arg.seq_args, |
2240a9e2 TM |
1461 | &data->o_res.seq_res, |
1462 | task) != 0) | |
1463 | nfs_release_seqid(data->o_arg.seqid); | |
6ee41268 | 1464 | return; |
652f89f6 TM |
1465 | unlock_no_action: |
1466 | rcu_read_unlock(); | |
6ee41268 TM |
1467 | out_no_action: |
1468 | task->tk_action = NULL; | |
b75ad4cd | 1469 | nfs4_sequence_done(task, &data->o_res.seq_res); |
b257957e AB |
1470 | } |
1471 | ||
24ac23ab TM |
1472 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1473 | { | |
1474 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1475 | |
24ac23ab | 1476 | data->rpc_status = task->tk_status; |
d898528c | 1477 | |
14516c3a TM |
1478 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1479 | return; | |
d898528c | 1480 | |
24ac23ab | 1481 | if (task->tk_status == 0) { |
807d66d8 TM |
1482 | if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) { |
1483 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1484 | case S_IFREG: |
1485 | break; | |
1486 | case S_IFLNK: | |
24ac23ab | 1487 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1488 | break; |
1489 | case S_IFDIR: | |
24ac23ab | 1490 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1491 | break; |
1492 | default: | |
24ac23ab | 1493 | data->rpc_status = -ENOTDIR; |
807d66d8 | 1494 | } |
6f926b5b | 1495 | } |
26e976a8 | 1496 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1497 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1498 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1499 | } |
3e309914 | 1500 | data->rpc_done = 1; |
24ac23ab | 1501 | } |
6f926b5b | 1502 | |
24ac23ab TM |
1503 | static void nfs4_open_release(void *calldata) |
1504 | { | |
1505 | struct nfs4_opendata *data = calldata; | |
1506 | struct nfs4_state *state = NULL; | |
1507 | ||
1508 | /* If this request hasn't been cancelled, do nothing */ | |
1509 | if (data->cancelled == 0) | |
1510 | goto out_free; | |
1511 | /* In case of error, no cleanup! */ | |
3e309914 | 1512 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1513 | goto out_free; |
1514 | /* In case we need an open_confirm, no cleanup! */ | |
1515 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1516 | goto out_free; | |
24ac23ab | 1517 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1518 | if (!IS_ERR(state)) |
643168c2 | 1519 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1520 | out_free: |
c6d00e63 | 1521 | nfs4_opendata_put(data); |
24ac23ab TM |
1522 | } |
1523 | ||
1524 | static const struct rpc_call_ops nfs4_open_ops = { | |
1525 | .rpc_call_prepare = nfs4_open_prepare, | |
1526 | .rpc_call_done = nfs4_open_done, | |
1527 | .rpc_release = nfs4_open_release, | |
1528 | }; | |
1529 | ||
b257957e | 1530 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) |
24ac23ab TM |
1531 | { |
1532 | struct inode *dir = data->dir->d_inode; | |
1533 | struct nfs_server *server = NFS_SERVER(dir); | |
1534 | struct nfs_openargs *o_arg = &data->o_arg; | |
1535 | struct nfs_openres *o_res = &data->o_res; | |
1536 | struct rpc_task *task; | |
5138fde0 TM |
1537 | struct rpc_message msg = { |
1538 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1539 | .rpc_argp = o_arg, | |
1540 | .rpc_resp = o_res, | |
1541 | .rpc_cred = data->owner->so_cred, | |
1542 | }; | |
c970aa85 TM |
1543 | struct rpc_task_setup task_setup_data = { |
1544 | .rpc_client = server->client, | |
5138fde0 | 1545 | .rpc_message = &msg, |
c970aa85 TM |
1546 | .callback_ops = &nfs4_open_ops, |
1547 | .callback_data = data, | |
101070ca | 1548 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1549 | .flags = RPC_TASK_ASYNC, |
1550 | }; | |
24ac23ab TM |
1551 | int status; |
1552 | ||
9d12b216 | 1553 | nfs41_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 1554 | kref_get(&data->kref); |
3e309914 TM |
1555 | data->rpc_done = 0; |
1556 | data->rpc_status = 0; | |
2ced46c2 | 1557 | data->cancelled = 0; |
b257957e | 1558 | if (isrecover) |
8fe72bac | 1559 | nfs4_set_sequence_privileged(&o_arg->seq_args); |
c970aa85 | 1560 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1561 | if (IS_ERR(task)) |
1562 | return PTR_ERR(task); | |
1563 | status = nfs4_wait_for_completion_rpc_task(task); | |
1564 | if (status != 0) { | |
1565 | data->cancelled = 1; | |
1566 | smp_wmb(); | |
1567 | } else | |
1568 | status = data->rpc_status; | |
1569 | rpc_put_task(task); | |
1570 | ||
1571 | return status; | |
1572 | } | |
1573 | ||
1574 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1575 | { | |
1576 | struct inode *dir = data->dir->d_inode; | |
1577 | struct nfs_openres *o_res = &data->o_res; | |
1578 | int status; | |
1579 | ||
1580 | status = nfs4_run_open_task(data, 1); | |
1581 | if (status != 0 || !data->rpc_done) | |
1582 | return status; | |
1583 | ||
6926afd1 TM |
1584 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
1585 | ||
b257957e AB |
1586 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
1587 | status = _nfs4_proc_open_confirm(data); | |
1588 | if (status != 0) | |
1589 | return status; | |
1590 | } | |
1591 | ||
1592 | return status; | |
1593 | } | |
1594 | ||
6168f62c WAA |
1595 | static int nfs4_opendata_access(struct rpc_cred *cred, |
1596 | struct nfs4_opendata *opendata, | |
1597 | struct nfs4_state *state, fmode_t fmode) | |
1598 | { | |
1599 | struct nfs_access_entry cache; | |
1600 | u32 mask; | |
1601 | ||
1602 | /* access call failed or for some reason the server doesn't | |
1603 | * support any access modes -- defer access call until later */ | |
1604 | if (opendata->o_res.access_supported == 0) | |
1605 | return 0; | |
1606 | ||
1607 | mask = 0; | |
bbd3a8ee WAA |
1608 | /* don't check MAY_WRITE - a newly created file may not have |
1609 | * write mode bits, but POSIX allows the creating process to write */ | |
6168f62c WAA |
1610 | if (fmode & FMODE_READ) |
1611 | mask |= MAY_READ; | |
6168f62c WAA |
1612 | if (fmode & FMODE_EXEC) |
1613 | mask |= MAY_EXEC; | |
1614 | ||
1615 | cache.cred = cred; | |
1616 | cache.jiffies = jiffies; | |
1617 | nfs_access_set_mask(&cache, opendata->o_res.access_result); | |
1618 | nfs_access_add_cache(state->inode, &cache); | |
1619 | ||
bbd3a8ee | 1620 | if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0) |
6168f62c WAA |
1621 | return 0; |
1622 | ||
1623 | /* even though OPEN succeeded, access is denied. Close the file */ | |
1624 | nfs4_close_state(state, fmode); | |
998f40b5 | 1625 | return -EACCES; |
6168f62c WAA |
1626 | } |
1627 | ||
b257957e AB |
1628 | /* |
1629 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1630 | */ | |
1631 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1632 | { | |
1633 | struct inode *dir = data->dir->d_inode; | |
1634 | struct nfs_server *server = NFS_SERVER(dir); | |
1635 | struct nfs_openargs *o_arg = &data->o_arg; | |
1636 | struct nfs_openres *o_res = &data->o_res; | |
1637 | int status; | |
1638 | ||
1639 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
1640 | if (!data->rpc_done) |
1641 | return status; | |
1642 | if (status != 0) { | |
1643 | if (status == -NFS4ERR_BADNAME && | |
1644 | !(o_arg->open_flags & O_CREAT)) | |
1645 | return -ENOENT; | |
24ac23ab | 1646 | return status; |
08ef7bd3 | 1647 | } |
24ac23ab | 1648 | |
6926afd1 TM |
1649 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
1650 | ||
90ff0c54 | 1651 | if (o_arg->open_flags & O_CREAT) |
56ae19f3 | 1652 | update_changeattr(dir, &o_res->cinfo); |
0df5dd4a TM |
1653 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1654 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1655 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1656 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1657 | if (status != 0) |
24ac23ab | 1658 | return status; |
1da177e4 LT |
1659 | } |
1660 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1661 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1662 | return 0; |
1da177e4 LT |
1663 | } |
1664 | ||
d83217c1 AA |
1665 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1666 | { | |
1667 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1668 | } | |
1669 | ||
1da177e4 LT |
1670 | /* |
1671 | * OPEN_EXPIRED: | |
1672 | * reclaim state on the server after a network partition. | |
1673 | * Assumes caller holds the appropriate lock | |
1674 | */ | |
539cd03a | 1675 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1676 | { |
e56e0b78 | 1677 | struct nfs4_opendata *opendata; |
864472e9 | 1678 | int ret; |
1da177e4 | 1679 | |
6f220ed5 TM |
1680 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1681 | if (IS_ERR(opendata)) | |
1682 | return PTR_ERR(opendata); | |
864472e9 | 1683 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1684 | if (ret == -ESTALE) |
3d4ff43d | 1685 | d_drop(ctx->dentry); |
c6d00e63 | 1686 | nfs4_opendata_put(opendata); |
864472e9 | 1687 | return ret; |
1da177e4 LT |
1688 | } |
1689 | ||
a9ed2e25 | 1690 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1691 | { |
539cd03a | 1692 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1693 | struct nfs4_exception exception = { }; |
1694 | int err; | |
1695 | ||
1696 | do { | |
539cd03a | 1697 | err = _nfs4_open_expired(ctx, state); |
a9ed2e25 TM |
1698 | switch (err) { |
1699 | default: | |
1700 | goto out; | |
1701 | case -NFS4ERR_GRACE: | |
1702 | case -NFS4ERR_DELAY: | |
1703 | nfs4_handle_exception(server, err, &exception); | |
1704 | err = 0; | |
1705 | } | |
202b50dc | 1706 | } while (exception.retry); |
a9ed2e25 | 1707 | out: |
202b50dc TM |
1708 | return err; |
1709 | } | |
1710 | ||
1da177e4 LT |
1711 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1712 | { | |
1da177e4 | 1713 | struct nfs_open_context *ctx; |
864472e9 | 1714 | int ret; |
1da177e4 | 1715 | |
864472e9 TM |
1716 | ctx = nfs4_state_find_open_context(state); |
1717 | if (IS_ERR(ctx)) | |
1718 | return PTR_ERR(ctx); | |
539cd03a | 1719 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1720 | put_nfs_open_context(ctx); |
1721 | return ret; | |
1da177e4 LT |
1722 | } |
1723 | ||
f062eb6c | 1724 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd | 1725 | static void nfs41_clear_delegation_stateid(struct nfs4_state *state) |
f062eb6c | 1726 | { |
f062eb6c | 1727 | struct nfs_server *server = NFS_SERVER(state->inode); |
3e60ffdd CL |
1728 | nfs4_stateid *stateid = &state->stateid; |
1729 | int status; | |
1730 | ||
1731 | /* If a state reset has been done, test_stateid is unneeded */ | |
1732 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
1733 | return; | |
1734 | ||
1735 | status = nfs41_test_stateid(server, stateid); | |
1736 | if (status != NFS_OK) { | |
1737 | /* Free the stateid unless the server explicitly | |
1738 | * informs us the stateid is unrecognized. */ | |
1739 | if (status != -NFS4ERR_BAD_STATEID) | |
1740 | nfs41_free_stateid(server, stateid); | |
6938867e | 1741 | nfs_remove_bad_delegation(state->inode); |
3e60ffdd | 1742 | |
6938867e BS |
1743 | write_seqlock(&state->seqlock); |
1744 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
1745 | write_sequnlock(&state->seqlock); | |
3e60ffdd CL |
1746 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
1747 | } | |
1748 | } | |
1749 | ||
1750 | /** | |
1751 | * nfs41_check_open_stateid - possibly free an open stateid | |
1752 | * | |
1753 | * @state: NFSv4 state for an inode | |
1754 | * | |
1755 | * Returns NFS_OK if recovery for this stateid is now finished. | |
1756 | * Otherwise a negative NFS4ERR value is returned. | |
1757 | */ | |
1758 | static int nfs41_check_open_stateid(struct nfs4_state *state) | |
1759 | { | |
1760 | struct nfs_server *server = NFS_SERVER(state->inode); | |
fcb6d9c6 | 1761 | nfs4_stateid *stateid = &state->open_stateid; |
3e60ffdd CL |
1762 | int status; |
1763 | ||
1764 | /* If a state reset has been done, test_stateid is unneeded */ | |
1765 | if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) && | |
1766 | (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) && | |
1767 | (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0)) | |
1768 | return -NFS4ERR_BAD_STATEID; | |
1769 | ||
1770 | status = nfs41_test_stateid(server, stateid); | |
1771 | if (status != NFS_OK) { | |
1772 | /* Free the stateid unless the server explicitly | |
1773 | * informs us the stateid is unrecognized. */ | |
1774 | if (status != -NFS4ERR_BAD_STATEID) | |
1775 | nfs41_free_stateid(server, stateid); | |
1776 | ||
1777 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1778 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1779 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
b01dd1d8 BS |
1780 | } |
1781 | return status; | |
1782 | } | |
1783 | ||
1784 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
1785 | { | |
eb64cf96 | 1786 | int status; |
b01dd1d8 | 1787 | |
3e60ffdd CL |
1788 | nfs41_clear_delegation_stateid(state); |
1789 | status = nfs41_check_open_stateid(state); | |
eb64cf96 CL |
1790 | if (status != NFS_OK) |
1791 | status = nfs4_open_expired(sp, state); | |
1792 | return status; | |
f062eb6c BS |
1793 | } |
1794 | #endif | |
1795 | ||
aa53ed54 JL |
1796 | /* |
1797 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1798 | * fields corresponding to attributes that were used to store the verifier. | |
1799 | * Make sure we clobber those fields in the later setattr call | |
1800 | */ | |
1801 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1802 | { | |
1803 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1804 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1805 | sattr->ia_valid |= ATTR_ATIME; | |
1806 | ||
1807 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1808 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1809 | sattr->ia_valid |= ATTR_MTIME; | |
1810 | } | |
1811 | ||
1da177e4 | 1812 | /* |
24ac23ab | 1813 | * Returns a referenced nfs4_state |
1da177e4 | 1814 | */ |
82be417a AA |
1815 | static int _nfs4_do_open(struct inode *dir, |
1816 | struct dentry *dentry, | |
1817 | fmode_t fmode, | |
1818 | int flags, | |
1819 | struct iattr *sattr, | |
1820 | struct rpc_cred *cred, | |
1821 | struct nfs4_state **res, | |
1822 | struct nfs4_threshold **ctx_th) | |
1da177e4 LT |
1823 | { |
1824 | struct nfs4_state_owner *sp; | |
1825 | struct nfs4_state *state = NULL; | |
1826 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1827 | struct nfs4_opendata *opendata; |
aac00a8d | 1828 | int status; |
1da177e4 LT |
1829 | |
1830 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 1831 | status = -ENOMEM; |
d1e284d5 TM |
1832 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
1833 | if (sp == NULL) { | |
1da177e4 LT |
1834 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
1835 | goto out_err; | |
1836 | } | |
58d9714a TM |
1837 | status = nfs4_recover_expired_lease(server); |
1838 | if (status != 0) | |
b4454fe1 | 1839 | goto err_put_state_owner; |
82a2c1b7 AV |
1840 | if (dentry->d_inode != NULL) |
1841 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 1842 | status = -ENOMEM; |
82a2c1b7 | 1843 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, GFP_KERNEL); |
e56e0b78 | 1844 | if (opendata == NULL) |
95d35cb4 | 1845 | goto err_put_state_owner; |
1da177e4 | 1846 | |
82be417a AA |
1847 | if (ctx_th && server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
1848 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
1849 | if (!opendata->f_attr.mdsthreshold) | |
1850 | goto err_opendata_put; | |
1549210f | 1851 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 1852 | } |
82a2c1b7 AV |
1853 | if (dentry->d_inode != NULL) |
1854 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 1855 | |
24ac23ab | 1856 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1857 | if (status != 0) |
c6d00e63 | 1858 | goto err_opendata_put; |
1da177e4 | 1859 | |
24ac23ab | 1860 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1861 | status = PTR_ERR(state); |
1862 | if (IS_ERR(state)) | |
c6d00e63 | 1863 | goto err_opendata_put; |
0df5dd4a | 1864 | if (server->caps & NFS_CAP_POSIX_LOCK) |
8e469ebd | 1865 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); |
0ab64e0e | 1866 | |
6168f62c WAA |
1867 | status = nfs4_opendata_access(cred, opendata, state, fmode); |
1868 | if (status != 0) | |
1869 | goto err_opendata_put; | |
1870 | ||
0ab64e0e TM |
1871 | if (opendata->o_arg.open_flags & O_EXCL) { |
1872 | nfs4_exclusive_attrset(opendata, sattr); | |
1873 | ||
1874 | nfs_fattr_init(opendata->o_res.f_attr); | |
1875 | status = nfs4_do_setattr(state->inode, cred, | |
1876 | opendata->o_res.f_attr, sattr, | |
1877 | state); | |
1878 | if (status == 0) | |
1879 | nfs_setattr_update_inode(state->inode, sattr); | |
1880 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
1881 | } | |
82be417a AA |
1882 | |
1883 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) | |
1884 | *ctx_th = opendata->f_attr.mdsthreshold; | |
1885 | else | |
1886 | kfree(opendata->f_attr.mdsthreshold); | |
1887 | opendata->f_attr.mdsthreshold = NULL; | |
1888 | ||
c6d00e63 | 1889 | nfs4_opendata_put(opendata); |
1da177e4 | 1890 | nfs4_put_state_owner(sp); |
1da177e4 LT |
1891 | *res = state; |
1892 | return 0; | |
c6d00e63 | 1893 | err_opendata_put: |
82be417a | 1894 | kfree(opendata->f_attr.mdsthreshold); |
c6d00e63 | 1895 | nfs4_opendata_put(opendata); |
e56e0b78 TM |
1896 | err_put_state_owner: |
1897 | nfs4_put_state_owner(sp); | |
1da177e4 | 1898 | out_err: |
1da177e4 LT |
1899 | *res = NULL; |
1900 | return status; | |
1901 | } | |
1902 | ||
1903 | ||
82be417a AA |
1904 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
1905 | struct dentry *dentry, | |
1906 | fmode_t fmode, | |
1907 | int flags, | |
1908 | struct iattr *sattr, | |
1909 | struct rpc_cred *cred, | |
1910 | struct nfs4_threshold **ctx_th) | |
1da177e4 LT |
1911 | { |
1912 | struct nfs4_exception exception = { }; | |
1913 | struct nfs4_state *res; | |
1914 | int status; | |
1915 | ||
6168f62c | 1916 | fmode &= FMODE_READ|FMODE_WRITE|FMODE_EXEC; |
1da177e4 | 1917 | do { |
82be417a AA |
1918 | status = _nfs4_do_open(dir, dentry, fmode, flags, sattr, cred, |
1919 | &res, ctx_th); | |
1da177e4 LT |
1920 | if (status == 0) |
1921 | break; | |
1922 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1923 | * book-keeping w.r.t. state-changing operations | |
1924 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1925 | * It is actually a sign of a bug on the client or on the server. | |
1926 | * | |
1927 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1928 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1929 | * have unhashed the old state_owner for us, and that we can |
1930 | * therefore safely retry using a new one. We should still warn | |
1931 | * the user though... | |
1932 | */ | |
1933 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 1934 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
1935 | " returned a bad sequence-id error!\n", |
1936 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1937 | exception.retry = 1; |
1938 | continue; | |
1939 | } | |
550f5747 TM |
1940 | /* |
1941 | * BAD_STATEID on OPEN means that the server cancelled our | |
1942 | * state before it received the OPEN_CONFIRM. | |
1943 | * Recover by retrying the request as per the discussion | |
1944 | * on Page 181 of RFC3530. | |
1945 | */ | |
1946 | if (status == -NFS4ERR_BAD_STATEID) { | |
1947 | exception.retry = 1; | |
1948 | continue; | |
1949 | } | |
aac00a8d TM |
1950 | if (status == -EAGAIN) { |
1951 | /* We must have found a delegation */ | |
1952 | exception.retry = 1; | |
1953 | continue; | |
1954 | } | |
1da177e4 LT |
1955 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1956 | status, &exception)); | |
1957 | } while (exception.retry); | |
1958 | return res; | |
1959 | } | |
1960 | ||
659bfcd6 TM |
1961 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1962 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1963 | struct nfs4_state *state) | |
1da177e4 | 1964 | { |
3e4f6290 | 1965 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1966 | struct nfs_setattrargs arg = { |
3e4f6290 | 1967 | .fh = NFS_FH(inode), |
1da177e4 LT |
1968 | .iap = sattr, |
1969 | .server = server, | |
1970 | .bitmask = server->attr_bitmask, | |
1971 | }; | |
1972 | struct nfs_setattrres res = { | |
1973 | .fattr = fattr, | |
1974 | .server = server, | |
1975 | }; | |
1976 | struct rpc_message msg = { | |
659bfcd6 TM |
1977 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
1978 | .rpc_argp = &arg, | |
1979 | .rpc_resp = &res, | |
1980 | .rpc_cred = cred, | |
1da177e4 | 1981 | }; |
26e976a8 | 1982 | unsigned long timestamp = jiffies; |
65e4308d | 1983 | int status; |
1da177e4 | 1984 | |
0e574af1 | 1985 | nfs_fattr_init(fattr); |
1da177e4 | 1986 | |
4fc8796d | 1987 | if (state != NULL) { |
2a369153 TM |
1988 | struct nfs_lockowner lockowner = { |
1989 | .l_owner = current->files, | |
1990 | .l_pid = current->tgid, | |
1991 | }; | |
4fc8796d | 1992 | nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, |
2a369153 | 1993 | &lockowner); |
4fc8796d TM |
1994 | } else if (nfs4_copy_delegation_stateid(&arg.stateid, inode, |
1995 | FMODE_WRITE)) { | |
3e4f6290 | 1996 | /* Use that stateid */ |
08e9eac4 | 1997 | } else |
f597c537 | 1998 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 1999 | |
7c513058 | 2000 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
2001 | if (status == 0 && state != NULL) |
2002 | renew_lease(server, timestamp); | |
65e4308d | 2003 | return status; |
1da177e4 LT |
2004 | } |
2005 | ||
659bfcd6 TM |
2006 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2007 | struct nfs_fattr *fattr, struct iattr *sattr, | |
2008 | struct nfs4_state *state) | |
1da177e4 | 2009 | { |
3e4f6290 | 2010 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
2011 | struct nfs4_exception exception = { |
2012 | .state = state, | |
3114ea7a | 2013 | .inode = inode, |
a1d0b5ee | 2014 | }; |
1da177e4 LT |
2015 | int err; |
2016 | do { | |
451146be TM |
2017 | err = _nfs4_do_setattr(inode, cred, fattr, sattr, state); |
2018 | switch (err) { | |
2019 | case -NFS4ERR_OPENMODE: | |
2020 | if (state && !(state->state & FMODE_WRITE)) { | |
2021 | err = -EBADF; | |
2022 | if (sattr->ia_valid & ATTR_OPEN) | |
2023 | err = -EACCES; | |
2024 | goto out; | |
2025 | } | |
2026 | } | |
2027 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 2028 | } while (exception.retry); |
451146be | 2029 | out: |
1da177e4 LT |
2030 | return err; |
2031 | } | |
2032 | ||
2033 | struct nfs4_closedata { | |
2034 | struct inode *inode; | |
2035 | struct nfs4_state *state; | |
2036 | struct nfs_closeargs arg; | |
2037 | struct nfs_closeres res; | |
516a6af6 | 2038 | struct nfs_fattr fattr; |
26e976a8 | 2039 | unsigned long timestamp; |
f7e8917a FI |
2040 | bool roc; |
2041 | u32 roc_barrier; | |
1da177e4 LT |
2042 | }; |
2043 | ||
963d8fe5 | 2044 | static void nfs4_free_closedata(void *data) |
9512135d | 2045 | { |
963d8fe5 TM |
2046 | struct nfs4_closedata *calldata = data; |
2047 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 2048 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 2049 | |
f7e8917a FI |
2050 | if (calldata->roc) |
2051 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
2052 | nfs4_put_open_state(calldata->state); |
2053 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 2054 | nfs4_put_state_owner(sp); |
324d003b | 2055 | nfs_sb_deactive_async(sb); |
9512135d TM |
2056 | kfree(calldata); |
2057 | } | |
2058 | ||
88069f77 TM |
2059 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
2060 | fmode_t fmode) | |
2061 | { | |
2062 | spin_lock(&state->owner->so_lock); | |
2063 | if (!(fmode & FMODE_READ)) | |
2064 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2065 | if (!(fmode & FMODE_WRITE)) | |
2066 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2067 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
2068 | spin_unlock(&state->owner->so_lock); | |
2069 | } | |
2070 | ||
963d8fe5 | 2071 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2072 | { |
963d8fe5 | 2073 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2074 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
2075 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
2076 | ||
a3ca5651 | 2077 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2078 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2079 | return; | |
1da177e4 LT |
2080 | /* hmm. we are done with the inode, and in the process of freeing |
2081 | * the state_owner. we keep this around to process errors | |
2082 | */ | |
1da177e4 LT |
2083 | switch (task->tk_status) { |
2084 | case 0: | |
f7e8917a FI |
2085 | if (calldata->roc) |
2086 | pnfs_roc_set_barrier(state->inode, | |
2087 | calldata->roc_barrier); | |
45328c35 | 2088 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 2089 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
2090 | nfs4_close_clear_stateid_flags(state, |
2091 | calldata->arg.fmode); | |
1da177e4 LT |
2092 | break; |
2093 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
2094 | case -NFS4ERR_OLD_STATEID: |
2095 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2096 | case -NFS4ERR_EXPIRED: |
dc0b027d | 2097 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2098 | break; |
1da177e4 | 2099 | default: |
72211dbe TM |
2100 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
2101 | rpc_restart_call_prepare(task); | |
1da177e4 | 2102 | } |
72211dbe | 2103 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2104 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2105 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2106 | } |
2107 | ||
4ce70ada | 2108 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2109 | { |
4ce70ada | 2110 | struct nfs4_closedata *calldata = data; |
9512135d | 2111 | struct nfs4_state *state = calldata->state; |
7fdab069 | 2112 | struct inode *inode = calldata->inode; |
88069f77 | 2113 | int call_close = 0; |
9512135d | 2114 | |
a3ca5651 | 2115 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2116 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 2117 | return; |
003707c7 | 2118 | |
88069f77 TM |
2119 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
2120 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 2121 | spin_lock(&state->owner->so_lock); |
003707c7 | 2122 | /* Calculate the change in open mode */ |
e7616923 | 2123 | if (state->n_rdwr == 0) { |
003707c7 | 2124 | if (state->n_rdonly == 0) { |
88069f77 TM |
2125 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
2126 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2127 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
2128 | } |
2129 | if (state->n_wronly == 0) { | |
88069f77 TM |
2130 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
2131 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2132 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 2133 | } |
e7616923 | 2134 | } |
4cecb76f | 2135 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2136 | |
2137 | if (!call_close) { | |
963d8fe5 TM |
2138 | /* Note: exit _without_ calling nfs4_close_done */ |
2139 | task->tk_action = NULL; | |
b75ad4cd | 2140 | nfs4_sequence_done(task, &calldata->res.seq_res); |
a3ca5651 | 2141 | goto out; |
9512135d | 2142 | } |
88069f77 | 2143 | |
f7e8917a | 2144 | if (calldata->arg.fmode == 0) { |
88069f77 | 2145 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a | 2146 | if (calldata->roc && |
7fdab069 | 2147 | pnfs_roc_drain(inode, &calldata->roc_barrier, task)) |
a3ca5651 | 2148 | goto out; |
f7e8917a | 2149 | } |
88069f77 | 2150 | |
516a6af6 | 2151 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2152 | calldata->timestamp = jiffies; |
7fdab069 | 2153 | if (nfs4_setup_sequence(NFS_SERVER(inode), |
9d12b216 TM |
2154 | &calldata->arg.seq_args, |
2155 | &calldata->res.seq_res, | |
2240a9e2 TM |
2156 | task) != 0) |
2157 | nfs_release_seqid(calldata->arg.seqid); | |
a3ca5651 CL |
2158 | out: |
2159 | dprintk("%s: done!\n", __func__); | |
1da177e4 LT |
2160 | } |
2161 | ||
963d8fe5 | 2162 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2163 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2164 | .rpc_call_done = nfs4_close_done, |
2165 | .rpc_release = nfs4_free_closedata, | |
2166 | }; | |
2167 | ||
1da177e4 LT |
2168 | /* |
2169 | * It is possible for data to be read/written from a mem-mapped file | |
2170 | * after the sys_close call (which hits the vfs layer as a flush). | |
2171 | * This means that we can't safely call nfsv4 close on a file until | |
2172 | * the inode is cleared. This in turn means that we are not good | |
2173 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2174 | * share state even when we are done with one of the three share | |
2175 | * stateid's in the inode. | |
2176 | * | |
2177 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2178 | */ | |
1f7977c1 | 2179 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) |
1da177e4 | 2180 | { |
4a35bd41 | 2181 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2182 | struct nfs4_closedata *calldata; |
b39e625b TM |
2183 | struct nfs4_state_owner *sp = state->owner; |
2184 | struct rpc_task *task; | |
5138fde0 TM |
2185 | struct rpc_message msg = { |
2186 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2187 | .rpc_cred = state->owner->so_cred, | |
2188 | }; | |
c970aa85 TM |
2189 | struct rpc_task_setup task_setup_data = { |
2190 | .rpc_client = server->client, | |
5138fde0 | 2191 | .rpc_message = &msg, |
c970aa85 | 2192 | .callback_ops = &nfs4_close_ops, |
101070ca | 2193 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2194 | .flags = RPC_TASK_ASYNC, |
2195 | }; | |
9512135d | 2196 | int status = -ENOMEM; |
1da177e4 | 2197 | |
8535b2be | 2198 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2199 | if (calldata == NULL) |
9512135d | 2200 | goto out; |
9d12b216 | 2201 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2202 | calldata->inode = state->inode; |
1da177e4 | 2203 | calldata->state = state; |
4a35bd41 | 2204 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2205 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2206 | /* Serialization for the sequence id */ |
8535b2be | 2207 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2208 | if (calldata->arg.seqid == NULL) |
2209 | goto out_free_calldata; | |
dc0b027d | 2210 | calldata->arg.fmode = 0; |
a65318bf | 2211 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2212 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2213 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2214 | calldata->res.server = server; |
1f7977c1 | 2215 | calldata->roc = pnfs_roc(state->inode); |
643168c2 | 2216 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2217 | |
1174dd1f TM |
2218 | msg.rpc_argp = &calldata->arg; |
2219 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2220 | task_setup_data.callback_data = calldata; |
2221 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2222 | if (IS_ERR(task)) |
2223 | return PTR_ERR(task); | |
a49c3c77 TM |
2224 | status = 0; |
2225 | if (wait) | |
2226 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2227 | rpc_put_task(task); |
a49c3c77 | 2228 | return status; |
9512135d TM |
2229 | out_free_calldata: |
2230 | kfree(calldata); | |
2231 | out: | |
b39e625b TM |
2232 | nfs4_put_open_state(state); |
2233 | nfs4_put_state_owner(sp); | |
9512135d | 2234 | return status; |
1da177e4 LT |
2235 | } |
2236 | ||
2b484297 | 2237 | static struct inode * |
cd9a1c0e | 2238 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2239 | { |
1da177e4 | 2240 | struct nfs4_state *state; |
1da177e4 | 2241 | |
565277f6 | 2242 | /* Protect against concurrent sillydeletes */ |
82be417a AA |
2243 | state = nfs4_do_open(dir, ctx->dentry, ctx->mode, open_flags, attr, |
2244 | ctx->cred, &ctx->mdsthreshold); | |
f46e0bd3 TM |
2245 | if (IS_ERR(state)) |
2246 | return ERR_CAST(state); | |
cd9a1c0e | 2247 | ctx->state = state; |
f46e0bd3 | 2248 | return igrab(state->inode); |
1da177e4 LT |
2249 | } |
2250 | ||
1185a552 | 2251 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2252 | { |
2253 | if (ctx->state == NULL) | |
2254 | return; | |
2255 | if (is_sync) | |
643168c2 | 2256 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2257 | else |
643168c2 | 2258 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2259 | } |
1da177e4 LT |
2260 | |
2261 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2262 | { | |
43652ad5 BH |
2263 | struct nfs4_server_caps_arg args = { |
2264 | .fhandle = fhandle, | |
2265 | }; | |
1da177e4 LT |
2266 | struct nfs4_server_caps_res res = {}; |
2267 | struct rpc_message msg = { | |
2268 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2269 | .rpc_argp = &args, |
1da177e4 LT |
2270 | .rpc_resp = &res, |
2271 | }; | |
2272 | int status; | |
2273 | ||
7c513058 | 2274 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2275 | if (status == 0) { |
2276 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2277 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2278 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2279 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2280 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2281 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2282 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2283 | server->caps |= NFS_CAP_ACLS; | |
2284 | if (res.has_links != 0) | |
2285 | server->caps |= NFS_CAP_HARDLINKS; | |
2286 | if (res.has_symlinks != 0) | |
2287 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2288 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2289 | server->caps |= NFS_CAP_FILEID; | |
2290 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2291 | server->caps |= NFS_CAP_MODE; | |
2292 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2293 | server->caps |= NFS_CAP_NLINK; | |
2294 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2295 | server->caps |= NFS_CAP_OWNER; | |
2296 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2297 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2298 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2299 | server->caps |= NFS_CAP_ATIME; | |
2300 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2301 | server->caps |= NFS_CAP_CTIME; | |
2302 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2303 | server->caps |= NFS_CAP_MTIME; | |
2304 | ||
a65318bf TM |
2305 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2306 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2307 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 | 2308 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 2309 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 2310 | } |
cccef3b9 | 2311 | |
1da177e4 LT |
2312 | return status; |
2313 | } | |
2314 | ||
55a97593 | 2315 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2316 | { |
2317 | struct nfs4_exception exception = { }; | |
2318 | int err; | |
2319 | do { | |
2320 | err = nfs4_handle_exception(server, | |
2321 | _nfs4_server_capabilities(server, fhandle), | |
2322 | &exception); | |
2323 | } while (exception.retry); | |
2324 | return err; | |
2325 | } | |
2326 | ||
2327 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2328 | struct nfs_fsinfo *info) | |
2329 | { | |
1da177e4 LT |
2330 | struct nfs4_lookup_root_arg args = { |
2331 | .bitmask = nfs4_fattr_bitmap, | |
2332 | }; | |
2333 | struct nfs4_lookup_res res = { | |
2334 | .server = server, | |
0e574af1 | 2335 | .fattr = info->fattr, |
1da177e4 LT |
2336 | .fh = fhandle, |
2337 | }; | |
2338 | struct rpc_message msg = { | |
2339 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2340 | .rpc_argp = &args, | |
2341 | .rpc_resp = &res, | |
2342 | }; | |
008f55d0 | 2343 | |
0e574af1 | 2344 | nfs_fattr_init(info->fattr); |
7c513058 | 2345 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2346 | } |
2347 | ||
2348 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2349 | struct nfs_fsinfo *info) | |
2350 | { | |
2351 | struct nfs4_exception exception = { }; | |
2352 | int err; | |
2353 | do { | |
fb8a5ba8 BS |
2354 | err = _nfs4_lookup_root(server, fhandle, info); |
2355 | switch (err) { | |
2356 | case 0: | |
2357 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 2358 | goto out; |
fb8a5ba8 BS |
2359 | default: |
2360 | err = nfs4_handle_exception(server, err, &exception); | |
2361 | } | |
1da177e4 | 2362 | } while (exception.retry); |
05e9cfb4 | 2363 | out: |
1da177e4 LT |
2364 | return err; |
2365 | } | |
2366 | ||
8f70e95f BS |
2367 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2368 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2369 | { | |
2370 | struct rpc_auth *auth; | |
2371 | int ret; | |
2372 | ||
2373 | auth = rpcauth_create(flavor, server->client); | |
e8d920c5 | 2374 | if (IS_ERR(auth)) { |
8f70e95f BS |
2375 | ret = -EIO; |
2376 | goto out; | |
2377 | } | |
2378 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2379 | out: |
2380 | return ret; | |
2381 | } | |
2382 | ||
801a16dc | 2383 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2384 | struct nfs_fsinfo *info) |
1da177e4 | 2385 | { |
8f70e95f | 2386 | int i, len, status = 0; |
0fabee24 | 2387 | rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS]; |
1da177e4 | 2388 | |
6a1a1e34 | 2389 | len = rpcauth_list_flavors(flav_array, ARRAY_SIZE(flav_array)); |
4ea8fed5 TM |
2390 | if (len < 0) |
2391 | return len; | |
8f70e95f BS |
2392 | |
2393 | for (i = 0; i < len; i++) { | |
6a1a1e34 CL |
2394 | /* AUTH_UNIX is the default flavor if none was specified, |
2395 | * thus has already been tried. */ | |
2396 | if (flav_array[i] == RPC_AUTH_UNIX) | |
2397 | continue; | |
2398 | ||
8f70e95f | 2399 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); |
fb8a5ba8 | 2400 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2401 | continue; |
2402 | break; | |
8f70e95f | 2403 | } |
fb8a5ba8 BS |
2404 | /* |
2405 | * -EACCESS could mean that the user doesn't have correct permissions | |
2406 | * to access the mount. It could also mean that we tried to mount | |
2407 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2408 | * existing mount programs don't handle -EACCES very well so it should | |
2409 | * be mapped to -EPERM instead. | |
2410 | */ | |
2411 | if (status == -EACCES) | |
2412 | status = -EPERM; | |
801a16dc BS |
2413 | return status; |
2414 | } | |
2415 | ||
2416 | /* | |
2417 | * get the file handle for the "/" directory on the server | |
2418 | */ | |
3028eb2b BS |
2419 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
2420 | struct nfs_fsinfo *info) | |
801a16dc | 2421 | { |
fca78d6d | 2422 | int minor_version = server->nfs_client->cl_minorversion; |
801a16dc | 2423 | int status = nfs4_lookup_root(server, fhandle, info); |
fb8a5ba8 BS |
2424 | if ((status == -NFS4ERR_WRONGSEC) && !(server->flags & NFS_MOUNT_SECFLAVOUR)) |
2425 | /* | |
2426 | * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM | |
2427 | * by nfs4_map_errors() as this function exits. | |
2428 | */ | |
fca78d6d | 2429 | status = nfs_v4_minor_ops[minor_version]->find_root_sec(server, fhandle, info); |
1da177e4 LT |
2430 | if (status == 0) |
2431 | status = nfs4_server_capabilities(server, fhandle); | |
2432 | if (status == 0) | |
2433 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2434 | return nfs4_map_errors(status); |
1da177e4 LT |
2435 | } |
2436 | ||
bae36241 BS |
2437 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
2438 | struct nfs_fsinfo *info) | |
2439 | { | |
2440 | int error; | |
2441 | struct nfs_fattr *fattr = info->fattr; | |
2442 | ||
2443 | error = nfs4_server_capabilities(server, mntfh); | |
2444 | if (error < 0) { | |
2445 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
2446 | return error; | |
2447 | } | |
2448 | ||
2449 | error = nfs4_proc_getattr(server, mntfh, fattr); | |
2450 | if (error < 0) { | |
2451 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
2452 | return error; | |
2453 | } | |
2454 | ||
2455 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
2456 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
2457 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
2458 | ||
2459 | return error; | |
2460 | } | |
2461 | ||
6b97fd3d MN |
2462 | /* |
2463 | * Get locations and (maybe) other attributes of a referral. | |
2464 | * Note that we'll actually follow the referral later when | |
2465 | * we detect fsid mismatch in inode revalidation | |
2466 | */ | |
f05d147f BS |
2467 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
2468 | const struct qstr *name, struct nfs_fattr *fattr, | |
2469 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
2470 | { |
2471 | int status = -ENOMEM; | |
2472 | struct page *page = NULL; | |
2473 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2474 | |
2475 | page = alloc_page(GFP_KERNEL); | |
2476 | if (page == NULL) | |
2477 | goto out; | |
2478 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2479 | if (locations == NULL) | |
2480 | goto out; | |
2481 | ||
f05d147f | 2482 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
2483 | if (status != 0) |
2484 | goto out; | |
2485 | /* Make sure server returned a different fsid for the referral */ | |
2486 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2487 | dprintk("%s: server did not return a different fsid for" |
2488 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2489 | status = -EIO; |
2490 | goto out; | |
2491 | } | |
533eb461 AA |
2492 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2493 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2494 | |
533eb461 | 2495 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2496 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2497 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2498 | out: | |
2499 | if (page) | |
2500 | __free_page(page); | |
5d7ca35a | 2501 | kfree(locations); |
6b97fd3d MN |
2502 | return status; |
2503 | } | |
2504 | ||
1da177e4 LT |
2505 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2506 | { | |
2507 | struct nfs4_getattr_arg args = { | |
2508 | .fh = fhandle, | |
2509 | .bitmask = server->attr_bitmask, | |
2510 | }; | |
2511 | struct nfs4_getattr_res res = { | |
2512 | .fattr = fattr, | |
2513 | .server = server, | |
2514 | }; | |
2515 | struct rpc_message msg = { | |
2516 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2517 | .rpc_argp = &args, | |
2518 | .rpc_resp = &res, | |
2519 | }; | |
2520 | ||
0e574af1 | 2521 | nfs_fattr_init(fattr); |
7c513058 | 2522 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2523 | } |
2524 | ||
2525 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2526 | { | |
2527 | struct nfs4_exception exception = { }; | |
2528 | int err; | |
2529 | do { | |
2530 | err = nfs4_handle_exception(server, | |
2531 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2532 | &exception); | |
2533 | } while (exception.retry); | |
2534 | return err; | |
2535 | } | |
2536 | ||
2537 | /* | |
2538 | * The file is not closed if it is opened due to the a request to change | |
2539 | * the size of the file. The open call will not be needed once the | |
2540 | * VFS layer lookup-intents are implemented. | |
2541 | * | |
2542 | * Close is called when the inode is destroyed. | |
2543 | * If we haven't opened the file for O_WRONLY, we | |
2544 | * need to in the size_change case to obtain a stateid. | |
2545 | * | |
2546 | * Got race? | |
2547 | * Because OPEN is always done by name in nfsv4, it is | |
2548 | * possible that we opened a different file by the same | |
2549 | * name. We can recognize this race condition, but we | |
2550 | * can't do anything about it besides returning an error. | |
2551 | * | |
2552 | * This will be fixed with VFS changes (lookup-intent). | |
2553 | */ | |
2554 | static int | |
2555 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2556 | struct iattr *sattr) | |
2557 | { | |
08e9eac4 | 2558 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2559 | struct rpc_cred *cred = NULL; |
d530838b | 2560 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2561 | int status; |
2562 | ||
8a1636c4 BH |
2563 | if (pnfs_ld_layoutret_on_setattr(inode)) |
2564 | pnfs_return_layout(inode); | |
2565 | ||
0e574af1 | 2566 | nfs_fattr_init(fattr); |
1da177e4 | 2567 | |
2669940d AA |
2568 | /* Deal with open(O_TRUNC) */ |
2569 | if (sattr->ia_valid & ATTR_OPEN) | |
2570 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME|ATTR_OPEN); | |
2571 | ||
2572 | /* Optimization: if the end result is no change, don't RPC */ | |
2573 | if ((sattr->ia_valid & ~(ATTR_FILE)) == 0) | |
2574 | return 0; | |
2575 | ||
d530838b | 2576 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2577 | if (sattr->ia_valid & ATTR_FILE) { |
2578 | struct nfs_open_context *ctx; | |
2579 | ||
2580 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2581 | if (ctx) { |
2582 | cred = ctx->cred; | |
2583 | state = ctx->state; | |
2584 | } | |
659bfcd6 | 2585 | } |
08e9eac4 | 2586 | |
659bfcd6 | 2587 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2588 | if (status == 0) |
2589 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2590 | return status; |
2591 | } | |
2592 | ||
0c2e53f1 TM |
2593 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
2594 | const struct qstr *name, struct nfs_fh *fhandle, | |
2595 | struct nfs_fattr *fattr) | |
2b3de441 | 2596 | { |
0c2e53f1 | 2597 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
2598 | int status; |
2599 | struct nfs4_lookup_arg args = { | |
2600 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 2601 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
2602 | .name = name, |
2603 | }; | |
2604 | struct nfs4_lookup_res res = { | |
2605 | .server = server, | |
2606 | .fattr = fattr, | |
2607 | .fh = fhandle, | |
2608 | }; | |
2609 | struct rpc_message msg = { | |
2610 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2611 | .rpc_argp = &args, | |
2612 | .rpc_resp = &res, | |
2613 | }; | |
2614 | ||
2615 | nfs_fattr_init(fattr); | |
2616 | ||
1da177e4 | 2617 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 2618 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2619 | dprintk("NFS reply lookup: %d\n", status); |
2620 | return status; | |
2621 | } | |
2622 | ||
72de53ec | 2623 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 2624 | { |
7ebb9315 | 2625 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 2626 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
2627 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
2628 | fattr->nlink = 2; | |
2629 | } | |
2630 | ||
72de53ec BS |
2631 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
2632 | struct qstr *name, struct nfs_fh *fhandle, | |
2633 | struct nfs_fattr *fattr) | |
1da177e4 LT |
2634 | { |
2635 | struct nfs4_exception exception = { }; | |
72de53ec | 2636 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
2637 | int err; |
2638 | do { | |
72de53ec BS |
2639 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr); |
2640 | switch (err) { | |
08ef7bd3 | 2641 | case -NFS4ERR_BADNAME: |
72de53ec BS |
2642 | err = -ENOENT; |
2643 | goto out; | |
0c2e53f1 | 2644 | case -NFS4ERR_MOVED: |
f05d147f | 2645 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
72de53ec | 2646 | goto out; |
0c2e53f1 | 2647 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
2648 | err = -EPERM; |
2649 | if (client != *clnt) | |
2650 | goto out; | |
2651 | ||
2652 | client = nfs4_create_sec_client(client, dir, name); | |
2653 | if (IS_ERR(client)) | |
2654 | return PTR_ERR(client); | |
2655 | ||
2656 | exception.retry = 1; | |
2657 | break; | |
2658 | default: | |
2659 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 2660 | } |
1da177e4 | 2661 | } while (exception.retry); |
72de53ec BS |
2662 | |
2663 | out: | |
2664 | if (err == 0) | |
2665 | *clnt = client; | |
2666 | else if (client != *clnt) | |
2667 | rpc_shutdown_client(client); | |
2668 | ||
1da177e4 LT |
2669 | return err; |
2670 | } | |
2671 | ||
80a16b21 | 2672 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, |
72de53ec BS |
2673 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2674 | { | |
2675 | int status; | |
2676 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
2677 | ||
2678 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2679 | if (client != NFS_CLIENT(dir)) { | |
2680 | rpc_shutdown_client(client); | |
2681 | nfs_fixup_secinfo_attributes(fattr); | |
2682 | } | |
2683 | return status; | |
2684 | } | |
2685 | ||
f05d147f BS |
2686 | struct rpc_clnt * |
2687 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, | |
2688 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2689 | { | |
2690 | int status; | |
2691 | struct rpc_clnt *client = rpc_clone_client(NFS_CLIENT(dir)); | |
2692 | ||
2693 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2694 | if (status < 0) { | |
2695 | rpc_shutdown_client(client); | |
2696 | return ERR_PTR(status); | |
2697 | } | |
2698 | return client; | |
2699 | } | |
2700 | ||
1da177e4 LT |
2701 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
2702 | { | |
76b32999 | 2703 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2704 | struct nfs4_accessargs args = { |
2705 | .fh = NFS_FH(inode), | |
a4980e78 | 2706 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
2707 | }; |
2708 | struct nfs4_accessres res = { | |
2709 | .server = server, | |
1da177e4 | 2710 | }; |
1da177e4 LT |
2711 | struct rpc_message msg = { |
2712 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2713 | .rpc_argp = &args, | |
2714 | .rpc_resp = &res, | |
2715 | .rpc_cred = entry->cred, | |
2716 | }; | |
2717 | int mode = entry->mask; | |
2718 | int status; | |
2719 | ||
2720 | /* | |
2721 | * Determine which access bits we want to ask for... | |
2722 | */ | |
2723 | if (mode & MAY_READ) | |
2724 | args.access |= NFS4_ACCESS_READ; | |
2725 | if (S_ISDIR(inode->i_mode)) { | |
2726 | if (mode & MAY_WRITE) | |
2727 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2728 | if (mode & MAY_EXEC) | |
2729 | args.access |= NFS4_ACCESS_LOOKUP; | |
2730 | } else { | |
2731 | if (mode & MAY_WRITE) | |
2732 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2733 | if (mode & MAY_EXEC) | |
2734 | args.access |= NFS4_ACCESS_EXECUTE; | |
2735 | } | |
c407d41a TM |
2736 | |
2737 | res.fattr = nfs_alloc_fattr(); | |
2738 | if (res.fattr == NULL) | |
2739 | return -ENOMEM; | |
2740 | ||
7c513058 | 2741 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 2742 | if (!status) { |
6168f62c | 2743 | nfs_access_set_mask(entry, res.access); |
c407d41a | 2744 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2745 | } |
c407d41a | 2746 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2747 | return status; |
2748 | } | |
2749 | ||
2750 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2751 | { | |
2752 | struct nfs4_exception exception = { }; | |
2753 | int err; | |
2754 | do { | |
2755 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2756 | _nfs4_proc_access(inode, entry), | |
2757 | &exception); | |
2758 | } while (exception.retry); | |
2759 | return err; | |
2760 | } | |
2761 | ||
2762 | /* | |
2763 | * TODO: For the time being, we don't try to get any attributes | |
2764 | * along with any of the zero-copy operations READ, READDIR, | |
2765 | * READLINK, WRITE. | |
2766 | * | |
2767 | * In the case of the first three, we want to put the GETATTR | |
2768 | * after the read-type operation -- this is because it is hard | |
2769 | * to predict the length of a GETATTR response in v4, and thus | |
2770 | * align the READ data correctly. This means that the GETATTR | |
2771 | * may end up partially falling into the page cache, and we should | |
2772 | * shift it into the 'tail' of the xdr_buf before processing. | |
2773 | * To do this efficiently, we need to know the total length | |
2774 | * of data received, which doesn't seem to be available outside | |
2775 | * of the RPC layer. | |
2776 | * | |
2777 | * In the case of WRITE, we also want to put the GETATTR after | |
2778 | * the operation -- in this case because we want to make sure | |
140150db | 2779 | * we get the post-operation mtime and size. |
1da177e4 LT |
2780 | * |
2781 | * Both of these changes to the XDR layer would in fact be quite | |
2782 | * minor, but I decided to leave them for a subsequent patch. | |
2783 | */ | |
2784 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2785 | unsigned int pgbase, unsigned int pglen) | |
2786 | { | |
2787 | struct nfs4_readlink args = { | |
2788 | .fh = NFS_FH(inode), | |
2789 | .pgbase = pgbase, | |
2790 | .pglen = pglen, | |
2791 | .pages = &page, | |
2792 | }; | |
f50c7000 | 2793 | struct nfs4_readlink_res res; |
1da177e4 LT |
2794 | struct rpc_message msg = { |
2795 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2796 | .rpc_argp = &args, | |
f50c7000 | 2797 | .rpc_resp = &res, |
1da177e4 LT |
2798 | }; |
2799 | ||
7c513058 | 2800 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2801 | } |
2802 | ||
2803 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2804 | unsigned int pgbase, unsigned int pglen) | |
2805 | { | |
2806 | struct nfs4_exception exception = { }; | |
2807 | int err; | |
2808 | do { | |
2809 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2810 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2811 | &exception); | |
2812 | } while (exception.retry); | |
2813 | return err; | |
2814 | } | |
2815 | ||
1da177e4 | 2816 | /* |
8867fe58 | 2817 | * This is just for mknod. open(O_CREAT) will always do ->open_context(). |
1da177e4 | 2818 | */ |
1da177e4 LT |
2819 | static int |
2820 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 2821 | int flags) |
1da177e4 | 2822 | { |
8867fe58 | 2823 | struct nfs_open_context *ctx; |
1da177e4 | 2824 | struct nfs4_state *state; |
1da177e4 LT |
2825 | int status = 0; |
2826 | ||
8867fe58 MS |
2827 | ctx = alloc_nfs_open_context(dentry, FMODE_READ); |
2828 | if (IS_ERR(ctx)) | |
2829 | return PTR_ERR(ctx); | |
2830 | ||
a8a5da99 | 2831 | sattr->ia_mode &= ~current_umask(); |
8626e4a4 TM |
2832 | state = nfs4_do_open(dir, dentry, ctx->mode, |
2833 | flags, sattr, ctx->cred, | |
2834 | &ctx->mdsthreshold); | |
d4d9cdcb | 2835 | d_drop(dentry); |
1da177e4 LT |
2836 | if (IS_ERR(state)) { |
2837 | status = PTR_ERR(state); | |
c0204fd2 | 2838 | goto out; |
1da177e4 | 2839 | } |
d4d9cdcb | 2840 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2841 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
8867fe58 | 2842 | ctx->state = state; |
1da177e4 | 2843 | out: |
8867fe58 | 2844 | put_nfs_open_context(ctx); |
1da177e4 LT |
2845 | return status; |
2846 | } | |
2847 | ||
2848 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2849 | { | |
16e42959 | 2850 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2851 | struct nfs_removeargs args = { |
1da177e4 | 2852 | .fh = NFS_FH(dir), |
26fe5750 | 2853 | .name = *name, |
16e42959 | 2854 | }; |
4fdc17b2 | 2855 | struct nfs_removeres res = { |
16e42959 | 2856 | .server = server, |
1da177e4 | 2857 | }; |
1da177e4 | 2858 | struct rpc_message msg = { |
4fdc17b2 TM |
2859 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
2860 | .rpc_argp = &args, | |
2861 | .rpc_resp = &res, | |
1da177e4 | 2862 | }; |
778d2817 | 2863 | int status; |
1da177e4 | 2864 | |
7c513058 | 2865 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 2866 | if (status == 0) |
16e42959 | 2867 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
2868 | return status; |
2869 | } | |
2870 | ||
2871 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2872 | { | |
2873 | struct nfs4_exception exception = { }; | |
2874 | int err; | |
2875 | do { | |
2876 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2877 | _nfs4_proc_remove(dir, name), | |
2878 | &exception); | |
2879 | } while (exception.retry); | |
2880 | return err; | |
2881 | } | |
2882 | ||
e4eff1a6 | 2883 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 2884 | { |
e4eff1a6 TM |
2885 | struct nfs_server *server = NFS_SERVER(dir); |
2886 | struct nfs_removeargs *args = msg->rpc_argp; | |
2887 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 2888 | |
e4eff1a6 | 2889 | res->server = server; |
1da177e4 | 2890 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
9d12b216 | 2891 | nfs41_init_sequence(&args->seq_args, &res->seq_res, 1); |
1da177e4 LT |
2892 | } |
2893 | ||
34e137cc BS |
2894 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
2895 | { | |
d9afbd1b TM |
2896 | nfs4_setup_sequence(NFS_SERVER(data->dir), |
2897 | &data->args.seq_args, | |
2898 | &data->res.seq_res, | |
2899 | task); | |
1da177e4 LT |
2900 | } |
2901 | ||
e4eff1a6 | 2902 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 2903 | { |
e4eff1a6 TM |
2904 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
2905 | ||
14516c3a TM |
2906 | if (!nfs4_sequence_done(task, &res->seq_res)) |
2907 | return 0; | |
9e33bed5 | 2908 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
2909 | return 0; |
2910 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 2911 | return 1; |
1da177e4 LT |
2912 | } |
2913 | ||
d3d4152a JL |
2914 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
2915 | { | |
2916 | struct nfs_server *server = NFS_SERVER(dir); | |
2917 | struct nfs_renameargs *arg = msg->rpc_argp; | |
2918 | struct nfs_renameres *res = msg->rpc_resp; | |
2919 | ||
2920 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 2921 | res->server = server; |
9d12b216 | 2922 | nfs41_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
2923 | } |
2924 | ||
c6bfa1a1 BS |
2925 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
2926 | { | |
d9afbd1b TM |
2927 | nfs4_setup_sequence(NFS_SERVER(data->old_dir), |
2928 | &data->args.seq_args, | |
2929 | &data->res.seq_res, | |
2930 | task); | |
d3d4152a JL |
2931 | } |
2932 | ||
2933 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
2934 | struct inode *new_dir) | |
2935 | { | |
2936 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
2937 | ||
2938 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
2939 | return 0; | |
2940 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
2941 | return 0; | |
2942 | ||
2943 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 2944 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
2945 | return 1; |
2946 | } | |
2947 | ||
1da177e4 LT |
2948 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
2949 | struct inode *new_dir, struct qstr *new_name) | |
2950 | { | |
6caf2c82 | 2951 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 2952 | struct nfs_renameargs arg = { |
1da177e4 LT |
2953 | .old_dir = NFS_FH(old_dir), |
2954 | .new_dir = NFS_FH(new_dir), | |
2955 | .old_name = old_name, | |
2956 | .new_name = new_name, | |
6caf2c82 | 2957 | }; |
e8582a8b | 2958 | struct nfs_renameres res = { |
6caf2c82 | 2959 | .server = server, |
1da177e4 | 2960 | }; |
1da177e4 LT |
2961 | struct rpc_message msg = { |
2962 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
2963 | .rpc_argp = &arg, | |
2964 | .rpc_resp = &res, | |
2965 | }; | |
011fff72 | 2966 | int status = -ENOMEM; |
1da177e4 | 2967 | |
7c513058 | 2968 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
2969 | if (!status) { |
2970 | update_changeattr(old_dir, &res.old_cinfo); | |
2971 | update_changeattr(new_dir, &res.new_cinfo); | |
2972 | } | |
2973 | return status; | |
2974 | } | |
2975 | ||
2976 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2977 | struct inode *new_dir, struct qstr *new_name) | |
2978 | { | |
2979 | struct nfs4_exception exception = { }; | |
2980 | int err; | |
2981 | do { | |
2982 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
2983 | _nfs4_proc_rename(old_dir, old_name, | |
2984 | new_dir, new_name), | |
2985 | &exception); | |
2986 | } while (exception.retry); | |
2987 | return err; | |
2988 | } | |
2989 | ||
2990 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2991 | { | |
91ba2eee | 2992 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2993 | struct nfs4_link_arg arg = { |
2994 | .fh = NFS_FH(inode), | |
2995 | .dir_fh = NFS_FH(dir), | |
2996 | .name = name, | |
91ba2eee TM |
2997 | .bitmask = server->attr_bitmask, |
2998 | }; | |
91ba2eee TM |
2999 | struct nfs4_link_res res = { |
3000 | .server = server, | |
1da177e4 | 3001 | }; |
1da177e4 LT |
3002 | struct rpc_message msg = { |
3003 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
3004 | .rpc_argp = &arg, | |
91ba2eee | 3005 | .rpc_resp = &res, |
1da177e4 | 3006 | }; |
136f2627 TM |
3007 | int status = -ENOMEM; |
3008 | ||
3009 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 3010 | if (res.fattr == NULL) |
136f2627 | 3011 | goto out; |
1da177e4 | 3012 | |
7c513058 | 3013 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
3014 | if (!status) { |
3015 | update_changeattr(dir, &res.cinfo); | |
73a3d07c | 3016 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 3017 | } |
136f2627 | 3018 | out: |
136f2627 | 3019 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3020 | return status; |
3021 | } | |
3022 | ||
3023 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3024 | { | |
3025 | struct nfs4_exception exception = { }; | |
3026 | int err; | |
3027 | do { | |
3028 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3029 | _nfs4_proc_link(inode, dir, name), | |
3030 | &exception); | |
3031 | } while (exception.retry); | |
3032 | return err; | |
3033 | } | |
3034 | ||
57dc9a57 TM |
3035 | struct nfs4_createdata { |
3036 | struct rpc_message msg; | |
3037 | struct nfs4_create_arg arg; | |
3038 | struct nfs4_create_res res; | |
3039 | struct nfs_fh fh; | |
3040 | struct nfs_fattr fattr; | |
57dc9a57 TM |
3041 | }; |
3042 | ||
3043 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
3044 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
3045 | { | |
3046 | struct nfs4_createdata *data; | |
3047 | ||
3048 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3049 | if (data != NULL) { | |
3050 | struct nfs_server *server = NFS_SERVER(dir); | |
3051 | ||
3052 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
3053 | data->msg.rpc_argp = &data->arg; | |
3054 | data->msg.rpc_resp = &data->res; | |
3055 | data->arg.dir_fh = NFS_FH(dir); | |
3056 | data->arg.server = server; | |
3057 | data->arg.name = name; | |
3058 | data->arg.attrs = sattr; | |
3059 | data->arg.ftype = ftype; | |
3060 | data->arg.bitmask = server->attr_bitmask; | |
3061 | data->res.server = server; | |
3062 | data->res.fh = &data->fh; | |
3063 | data->res.fattr = &data->fattr; | |
57dc9a57 | 3064 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
3065 | } |
3066 | return data; | |
3067 | } | |
3068 | ||
3069 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3070 | { | |
7c513058 | 3071 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3072 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3073 | if (status == 0) { |
3074 | update_changeattr(dir, &data->res.dir_cinfo); | |
57dc9a57 TM |
3075 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); |
3076 | } | |
3077 | return status; | |
3078 | } | |
3079 | ||
3080 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3081 | { | |
3082 | kfree(data); | |
3083 | } | |
3084 | ||
4f390c15 | 3085 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3086 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 3087 | { |
57dc9a57 TM |
3088 | struct nfs4_createdata *data; |
3089 | int status = -ENAMETOOLONG; | |
1da177e4 | 3090 | |
94a6d753 | 3091 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 3092 | goto out; |
4f390c15 | 3093 | |
57dc9a57 TM |
3094 | status = -ENOMEM; |
3095 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
3096 | if (data == NULL) | |
3097 | goto out; | |
3098 | ||
3099 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
3100 | data->arg.u.symlink.pages = &page; | |
3101 | data->arg.u.symlink.len = len; | |
1da177e4 | 3102 | |
57dc9a57 TM |
3103 | status = nfs4_do_create(dir, dentry, data); |
3104 | ||
3105 | nfs4_free_createdata(data); | |
3106 | out: | |
1da177e4 LT |
3107 | return status; |
3108 | } | |
3109 | ||
4f390c15 | 3110 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3111 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
3112 | { |
3113 | struct nfs4_exception exception = { }; | |
3114 | int err; | |
3115 | do { | |
3116 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
3117 | _nfs4_proc_symlink(dir, dentry, page, |
3118 | len, sattr), | |
1da177e4 LT |
3119 | &exception); |
3120 | } while (exception.retry); | |
3121 | return err; | |
3122 | } | |
3123 | ||
3124 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3125 | struct iattr *sattr) | |
3126 | { | |
57dc9a57 TM |
3127 | struct nfs4_createdata *data; |
3128 | int status = -ENOMEM; | |
1da177e4 | 3129 | |
57dc9a57 TM |
3130 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3131 | if (data == NULL) | |
3132 | goto out; | |
3133 | ||
3134 | status = nfs4_do_create(dir, dentry, data); | |
3135 | ||
3136 | nfs4_free_createdata(data); | |
3137 | out: | |
1da177e4 LT |
3138 | return status; |
3139 | } | |
3140 | ||
3141 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3142 | struct iattr *sattr) | |
3143 | { | |
3144 | struct nfs4_exception exception = { }; | |
3145 | int err; | |
a8a5da99 AK |
3146 | |
3147 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3148 | do { |
3149 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3150 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
3151 | &exception); | |
3152 | } while (exception.retry); | |
3153 | return err; | |
3154 | } | |
3155 | ||
3156 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3157 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3158 | { |
3159 | struct inode *dir = dentry->d_inode; | |
3160 | struct nfs4_readdir_arg args = { | |
3161 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3162 | .pages = pages, |
1da177e4 LT |
3163 | .pgbase = 0, |
3164 | .count = count, | |
96d25e53 | 3165 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3166 | .plus = plus, |
1da177e4 LT |
3167 | }; |
3168 | struct nfs4_readdir_res res; | |
3169 | struct rpc_message msg = { | |
3170 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3171 | .rpc_argp = &args, | |
3172 | .rpc_resp = &res, | |
3173 | .rpc_cred = cred, | |
3174 | }; | |
3175 | int status; | |
3176 | ||
3110ff80 | 3177 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
3178 | dentry->d_parent->d_name.name, |
3179 | dentry->d_name.name, | |
3180 | (unsigned long long)cookie); | |
c3f52af3 | 3181 | nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args); |
1da177e4 | 3182 | res.pgbase = args.pgbase; |
7c513058 | 3183 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3184 | if (status >= 0) { |
c3f52af3 | 3185 | memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3186 | status += args.pgbase; |
3187 | } | |
c4812998 TM |
3188 | |
3189 | nfs_invalidate_atime(dir); | |
3190 | ||
3110ff80 | 3191 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3192 | return status; |
3193 | } | |
3194 | ||
3195 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3196 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3197 | { |
3198 | struct nfs4_exception exception = { }; | |
3199 | int err; | |
3200 | do { | |
3201 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
3202 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 3203 | pages, count, plus), |
1da177e4 LT |
3204 | &exception); |
3205 | } while (exception.retry); | |
3206 | return err; | |
3207 | } | |
3208 | ||
3209 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3210 | struct iattr *sattr, dev_t rdev) | |
3211 | { | |
57dc9a57 TM |
3212 | struct nfs4_createdata *data; |
3213 | int mode = sattr->ia_mode; | |
3214 | int status = -ENOMEM; | |
1da177e4 | 3215 | |
57dc9a57 TM |
3216 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); |
3217 | if (data == NULL) | |
3218 | goto out; | |
3219 | ||
1da177e4 | 3220 | if (S_ISFIFO(mode)) |
57dc9a57 | 3221 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3222 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3223 | data->arg.ftype = NF4BLK; |
3224 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3225 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3226 | } |
3227 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3228 | data->arg.ftype = NF4CHR; |
3229 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3230 | data->arg.u.device.specdata2 = MINOR(rdev); | |
4ea8fed5 TM |
3231 | } else if (!S_ISSOCK(mode)) { |
3232 | status = -EINVAL; | |
3233 | goto out_free; | |
1da177e4 | 3234 | } |
1da177e4 | 3235 | |
57dc9a57 | 3236 | status = nfs4_do_create(dir, dentry, data); |
4ea8fed5 | 3237 | out_free: |
57dc9a57 TM |
3238 | nfs4_free_createdata(data); |
3239 | out: | |
1da177e4 LT |
3240 | return status; |
3241 | } | |
3242 | ||
3243 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3244 | struct iattr *sattr, dev_t rdev) | |
3245 | { | |
3246 | struct nfs4_exception exception = { }; | |
3247 | int err; | |
a8a5da99 AK |
3248 | |
3249 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3250 | do { |
3251 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3252 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
3253 | &exception); | |
3254 | } while (exception.retry); | |
3255 | return err; | |
3256 | } | |
3257 | ||
3258 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3259 | struct nfs_fsstat *fsstat) | |
3260 | { | |
3261 | struct nfs4_statfs_arg args = { | |
3262 | .fh = fhandle, | |
3263 | .bitmask = server->attr_bitmask, | |
3264 | }; | |
24ad148a BH |
3265 | struct nfs4_statfs_res res = { |
3266 | .fsstat = fsstat, | |
3267 | }; | |
1da177e4 LT |
3268 | struct rpc_message msg = { |
3269 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3270 | .rpc_argp = &args, | |
24ad148a | 3271 | .rpc_resp = &res, |
1da177e4 LT |
3272 | }; |
3273 | ||
0e574af1 | 3274 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3275 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3276 | } |
3277 | ||
3278 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3279 | { | |
3280 | struct nfs4_exception exception = { }; | |
3281 | int err; | |
3282 | do { | |
3283 | err = nfs4_handle_exception(server, | |
3284 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3285 | &exception); | |
3286 | } while (exception.retry); | |
3287 | return err; | |
3288 | } | |
3289 | ||
3290 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3291 | struct nfs_fsinfo *fsinfo) | |
3292 | { | |
3293 | struct nfs4_fsinfo_arg args = { | |
3294 | .fh = fhandle, | |
3295 | .bitmask = server->attr_bitmask, | |
3296 | }; | |
3dda5e43 BH |
3297 | struct nfs4_fsinfo_res res = { |
3298 | .fsinfo = fsinfo, | |
3299 | }; | |
1da177e4 LT |
3300 | struct rpc_message msg = { |
3301 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3302 | .rpc_argp = &args, | |
3dda5e43 | 3303 | .rpc_resp = &res, |
1da177e4 LT |
3304 | }; |
3305 | ||
7c513058 | 3306 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3307 | } |
3308 | ||
3309 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3310 | { | |
3311 | struct nfs4_exception exception = { }; | |
3312 | int err; | |
3313 | ||
3314 | do { | |
3315 | err = nfs4_handle_exception(server, | |
3316 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
3317 | &exception); | |
3318 | } while (exception.retry); | |
3319 | return err; | |
3320 | } | |
3321 | ||
3322 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3323 | { | |
e38eb650 BS |
3324 | int error; |
3325 | ||
0e574af1 | 3326 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 | 3327 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
dc182549 PT |
3328 | if (error == 0) { |
3329 | /* block layout checks this! */ | |
3330 | server->pnfs_blksize = fsinfo->blksize; | |
e38eb650 | 3331 | set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype); |
dc182549 | 3332 | } |
e38eb650 BS |
3333 | |
3334 | return error; | |
1da177e4 LT |
3335 | } |
3336 | ||
3337 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3338 | struct nfs_pathconf *pathconf) | |
3339 | { | |
3340 | struct nfs4_pathconf_arg args = { | |
3341 | .fh = fhandle, | |
3342 | .bitmask = server->attr_bitmask, | |
3343 | }; | |
d45b2989 BH |
3344 | struct nfs4_pathconf_res res = { |
3345 | .pathconf = pathconf, | |
3346 | }; | |
1da177e4 LT |
3347 | struct rpc_message msg = { |
3348 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3349 | .rpc_argp = &args, | |
d45b2989 | 3350 | .rpc_resp = &res, |
1da177e4 LT |
3351 | }; |
3352 | ||
3353 | /* None of the pathconf attributes are mandatory to implement */ | |
3354 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3355 | memset(pathconf, 0, sizeof(*pathconf)); | |
3356 | return 0; | |
3357 | } | |
3358 | ||
0e574af1 | 3359 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3360 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3361 | } |
3362 | ||
3363 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3364 | struct nfs_pathconf *pathconf) | |
3365 | { | |
3366 | struct nfs4_exception exception = { }; | |
3367 | int err; | |
3368 | ||
3369 | do { | |
3370 | err = nfs4_handle_exception(server, | |
3371 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3372 | &exception); | |
3373 | } while (exception.retry); | |
3374 | return err; | |
3375 | } | |
3376 | ||
d20581aa BH |
3377 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3378 | { | |
cd841605 | 3379 | nfs_invalidate_atime(data->header->inode); |
d20581aa BH |
3380 | } |
3381 | ||
cbdabc7f | 3382 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3383 | { |
cd841605 | 3384 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
1da177e4 | 3385 | |
9e33bed5 | 3386 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3387 | rpc_restart_call_prepare(task); |
ec06c096 | 3388 | return -EAGAIN; |
1da177e4 | 3389 | } |
8850df99 | 3390 | |
d20581aa | 3391 | __nfs4_read_done_cb(data); |
1da177e4 | 3392 | if (task->tk_status > 0) |
ec06c096 TM |
3393 | renew_lease(server, data->timestamp); |
3394 | return 0; | |
1da177e4 LT |
3395 | } |
3396 | ||
cbdabc7f AA |
3397 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3398 | { | |
3399 | ||
3400 | dprintk("--> %s\n", __func__); | |
3401 | ||
3402 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3403 | return -EAGAIN; | |
3404 | ||
d20581aa BH |
3405 | return data->read_done_cb ? data->read_done_cb(task, data) : |
3406 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
3407 | } |
3408 | ||
bdc7f021 | 3409 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3410 | { |
1da177e4 | 3411 | data->timestamp = jiffies; |
cbdabc7f | 3412 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3413 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
9d12b216 | 3414 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
1da177e4 LT |
3415 | } |
3416 | ||
ea7c3303 BS |
3417 | static void nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) |
3418 | { | |
d9afbd1b TM |
3419 | nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
3420 | &data->args.seq_args, | |
3421 | &data->res.seq_res, | |
3422 | task); | |
1da177e4 LT |
3423 | } |
3424 | ||
b029bc9b | 3425 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3426 | { |
cd841605 | 3427 | struct inode *inode = data->header->inode; |
1da177e4 | 3428 | |
9e33bed5 | 3429 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3430 | rpc_restart_call_prepare(task); |
788e7a89 | 3431 | return -EAGAIN; |
1da177e4 | 3432 | } |
4f9838c7 | 3433 | if (task->tk_status >= 0) { |
1da177e4 | 3434 | renew_lease(NFS_SERVER(inode), data->timestamp); |
5a37f851 | 3435 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); |
4f9838c7 | 3436 | } |
788e7a89 | 3437 | return 0; |
1da177e4 LT |
3438 | } |
3439 | ||
b029bc9b FI |
3440 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3441 | { | |
3442 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3443 | return -EAGAIN; | |
d20581aa BH |
3444 | return data->write_done_cb ? data->write_done_cb(task, data) : |
3445 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
3446 | } |
3447 | ||
5a37f851 TM |
3448 | static |
3449 | bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data *data) | |
a69aef14 | 3450 | { |
5a37f851 TM |
3451 | const struct nfs_pgio_header *hdr = data->header; |
3452 | ||
3453 | /* Don't request attributes for pNFS or O_DIRECT writes */ | |
3454 | if (data->ds_clp != NULL || hdr->dreq != NULL) | |
3455 | return false; | |
3456 | /* Otherwise, request attributes if and only if we don't hold | |
3457 | * a delegation | |
3458 | */ | |
011e2a7f | 3459 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 3460 | } |
a69aef14 | 3461 | |
bdc7f021 | 3462 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3463 | { |
cd841605 | 3464 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
bdc7f021 | 3465 | |
5a37f851 | 3466 | if (!nfs4_write_need_cache_consistency_data(data)) { |
7ffd1064 FI |
3467 | data->args.bitmask = NULL; |
3468 | data->res.fattr = NULL; | |
3469 | } else | |
3470 | data->args.bitmask = server->cache_consistency_bitmask; | |
5a37f851 | 3471 | |
b029bc9b FI |
3472 | if (!data->write_done_cb) |
3473 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3474 | data->res.server = server; |
1da177e4 LT |
3475 | data->timestamp = jiffies; |
3476 | ||
bdc7f021 | 3477 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
9d12b216 | 3478 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3479 | } |
3480 | ||
c6cb80d0 BS |
3481 | static void nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) |
3482 | { | |
d9afbd1b TM |
3483 | nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
3484 | &data->args.seq_args, | |
3485 | &data->res.seq_res, | |
3486 | task); | |
1da177e4 LT |
3487 | } |
3488 | ||
0b7c0153 | 3489 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 | 3490 | { |
d9afbd1b TM |
3491 | nfs4_setup_sequence(NFS_SERVER(data->inode), |
3492 | &data->args.seq_args, | |
3493 | &data->res.seq_res, | |
3494 | task); | |
1da177e4 LT |
3495 | } |
3496 | ||
0b7c0153 | 3497 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 3498 | { |
1da177e4 | 3499 | struct inode *inode = data->inode; |
14516c3a | 3500 | |
9e33bed5 | 3501 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
d00c5d43 | 3502 | rpc_restart_call_prepare(task); |
788e7a89 | 3503 | return -EAGAIN; |
1da177e4 | 3504 | } |
788e7a89 | 3505 | return 0; |
1da177e4 LT |
3506 | } |
3507 | ||
0b7c0153 | 3508 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
3509 | { |
3510 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3511 | return -EAGAIN; | |
0b7c0153 | 3512 | return data->commit_done_cb(task, data); |
5f452431 FI |
3513 | } |
3514 | ||
0b7c0153 | 3515 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 3516 | { |
788e7a89 | 3517 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 3518 | |
0b7c0153 FI |
3519 | if (data->commit_done_cb == NULL) |
3520 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 3521 | data->res.server = server; |
bdc7f021 | 3522 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
9d12b216 | 3523 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3524 | } |
3525 | ||
9bc4e3ca CL |
3526 | struct nfs4_renewdata { |
3527 | struct nfs_client *client; | |
3528 | unsigned long timestamp; | |
3529 | }; | |
3530 | ||
1da177e4 LT |
3531 | /* |
3532 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3533 | * standalone procedure for queueing an asynchronous RENEW. | |
3534 | */ | |
9bc4e3ca | 3535 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3536 | { |
9bc4e3ca CL |
3537 | struct nfs4_renewdata *data = calldata; |
3538 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3539 | |
0851de06 AB |
3540 | if (atomic_read(&clp->cl_count) > 1) |
3541 | nfs4_schedule_state_renewal(clp); | |
3542 | nfs_put_client(clp); | |
9bc4e3ca | 3543 | kfree(data); |
dc96aef9 AB |
3544 | } |
3545 | ||
9bc4e3ca | 3546 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3547 | { |
9bc4e3ca CL |
3548 | struct nfs4_renewdata *data = calldata; |
3549 | struct nfs_client *clp = data->client; | |
3550 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3551 | |
3552 | if (task->tk_status < 0) { | |
95baa25c | 3553 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
3554 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
3555 | return; | |
3556 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 3557 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
3558 | return; |
3559 | } | |
3560 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 3561 | } |
452e9352 | 3562 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3563 | } |
3564 | ||
963d8fe5 TM |
3565 | static const struct rpc_call_ops nfs4_renew_ops = { |
3566 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3567 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3568 | }; |
3569 | ||
2f60ea6b | 3570 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
3571 | { |
3572 | struct rpc_message msg = { | |
3573 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3574 | .rpc_argp = clp, | |
b4454fe1 | 3575 | .rpc_cred = cred, |
1da177e4 | 3576 | }; |
9bc4e3ca | 3577 | struct nfs4_renewdata *data; |
1da177e4 | 3578 | |
2f60ea6b TM |
3579 | if (renew_flags == 0) |
3580 | return 0; | |
0851de06 AB |
3581 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3582 | return -EIO; | |
b569ad34 | 3583 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
3584 | if (data == NULL) |
3585 | return -ENOMEM; | |
3586 | data->client = clp; | |
3587 | data->timestamp = jiffies; | |
1da177e4 | 3588 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, |
9bc4e3ca | 3589 | &nfs4_renew_ops, data); |
1da177e4 LT |
3590 | } |
3591 | ||
8534d4ec | 3592 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3593 | { |
3594 | struct rpc_message msg = { | |
3595 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3596 | .rpc_argp = clp, | |
b4454fe1 | 3597 | .rpc_cred = cred, |
1da177e4 LT |
3598 | }; |
3599 | unsigned long now = jiffies; | |
3600 | int status; | |
3601 | ||
3602 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3603 | if (status < 0) | |
3604 | return status; | |
452e9352 | 3605 | do_renew_lease(clp, now); |
1da177e4 LT |
3606 | return 0; |
3607 | } | |
3608 | ||
aa1870af BF |
3609 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3610 | { | |
3611 | return (server->caps & NFS_CAP_ACLS) | |
3612 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3613 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3614 | } | |
3615 | ||
21f498c2 TM |
3616 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that |
3617 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on | |
aa1870af BF |
3618 | * the stack. |
3619 | */ | |
21f498c2 | 3620 | #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) |
aa1870af | 3621 | |
e9e3d724 NH |
3622 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
3623 | struct page **pages, unsigned int *pgbase) | |
3624 | { | |
3625 | struct page *newpage, **spages; | |
3626 | int rc = 0; | |
3627 | size_t len; | |
3628 | spages = pages; | |
3629 | ||
3630 | do { | |
21f498c2 | 3631 | len = min_t(size_t, PAGE_SIZE, buflen); |
e9e3d724 NH |
3632 | newpage = alloc_page(GFP_KERNEL); |
3633 | ||
3634 | if (newpage == NULL) | |
3635 | goto unwind; | |
3636 | memcpy(page_address(newpage), buf, len); | |
3637 | buf += len; | |
3638 | buflen -= len; | |
3639 | *pages++ = newpage; | |
3640 | rc++; | |
3641 | } while (buflen != 0); | |
3642 | ||
3643 | return rc; | |
3644 | ||
3645 | unwind: | |
3646 | for(; rc > 0; rc--) | |
3647 | __free_page(spages[rc-1]); | |
3648 | return -ENOMEM; | |
3649 | } | |
3650 | ||
e50a1c2e BF |
3651 | struct nfs4_cached_acl { |
3652 | int cached; | |
3653 | size_t len; | |
3e9d4154 | 3654 | char data[0]; |
e50a1c2e BF |
3655 | }; |
3656 | ||
3657 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3658 | { | |
3659 | struct nfs_inode *nfsi = NFS_I(inode); | |
3660 | ||
3661 | spin_lock(&inode->i_lock); | |
3662 | kfree(nfsi->nfs4_acl); | |
3663 | nfsi->nfs4_acl = acl; | |
3664 | spin_unlock(&inode->i_lock); | |
3665 | } | |
3666 | ||
3667 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3668 | { | |
3669 | nfs4_set_cached_acl(inode, NULL); | |
3670 | } | |
3671 | ||
3672 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3673 | { | |
3674 | struct nfs_inode *nfsi = NFS_I(inode); | |
3675 | struct nfs4_cached_acl *acl; | |
3676 | int ret = -ENOENT; | |
3677 | ||
3678 | spin_lock(&inode->i_lock); | |
3679 | acl = nfsi->nfs4_acl; | |
3680 | if (acl == NULL) | |
3681 | goto out; | |
3682 | if (buf == NULL) /* user is just asking for length */ | |
3683 | goto out_len; | |
3684 | if (acl->cached == 0) | |
3685 | goto out; | |
3686 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3687 | if (acl->len > buflen) | |
3688 | goto out; | |
3689 | memcpy(buf, acl->data, acl->len); | |
3690 | out_len: | |
3691 | ret = acl->len; | |
3692 | out: | |
3693 | spin_unlock(&inode->i_lock); | |
3694 | return ret; | |
3695 | } | |
3696 | ||
5794d21e | 3697 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
3698 | { |
3699 | struct nfs4_cached_acl *acl; | |
b291f1b1 | 3700 | size_t buflen = sizeof(*acl) + acl_len; |
e50a1c2e | 3701 | |
1f1ea6c2 | 3702 | if (buflen <= PAGE_SIZE) { |
b291f1b1 | 3703 | acl = kmalloc(buflen, GFP_KERNEL); |
e50a1c2e BF |
3704 | if (acl == NULL) |
3705 | goto out; | |
3706 | acl->cached = 1; | |
5794d21e | 3707 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
3708 | } else { |
3709 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3710 | if (acl == NULL) | |
3711 | goto out; | |
3712 | acl->cached = 0; | |
3713 | } | |
3714 | acl->len = acl_len; | |
3715 | out: | |
3716 | nfs4_set_cached_acl(inode, acl); | |
3717 | } | |
3718 | ||
bf118a34 AA |
3719 | /* |
3720 | * The getxattr API returns the required buffer length when called with a | |
3721 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
3722 | * the required buf. On a NULL buf, we send a page of data to the server | |
3723 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
3724 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
3725 | * the cache. If not so, we throw away the page, and cache the required | |
3726 | * length. The next getxattr call will then produce another round trip to | |
3727 | * the server, this time with the input buf of the required size. | |
3728 | */ | |
16b4289c | 3729 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3730 | { |
bf118a34 | 3731 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
3732 | struct nfs_getaclargs args = { |
3733 | .fh = NFS_FH(inode), | |
3734 | .acl_pages = pages, | |
3735 | .acl_len = buflen, | |
3736 | }; | |
663c79b3 BH |
3737 | struct nfs_getaclres res = { |
3738 | .acl_len = buflen, | |
3739 | }; | |
aa1870af BF |
3740 | struct rpc_message msg = { |
3741 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3742 | .rpc_argp = &args, | |
663c79b3 | 3743 | .rpc_resp = &res, |
aa1870af | 3744 | }; |
21f498c2 TM |
3745 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
3746 | int ret = -ENOMEM, i; | |
aa1870af | 3747 | |
bf118a34 AA |
3748 | /* As long as we're doing a round trip to the server anyway, |
3749 | * let's be prepared for a page of acl data. */ | |
3750 | if (npages == 0) | |
3751 | npages = 1; | |
21f498c2 TM |
3752 | if (npages > ARRAY_SIZE(pages)) |
3753 | return -ERANGE; | |
5a006899 | 3754 | |
bf118a34 AA |
3755 | for (i = 0; i < npages; i++) { |
3756 | pages[i] = alloc_page(GFP_KERNEL); | |
3757 | if (!pages[i]) | |
3758 | goto out_free; | |
e50a1c2e | 3759 | } |
5a006899 SP |
3760 | |
3761 | /* for decoding across pages */ | |
3762 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
3763 | if (!res.acl_scratch) | |
3764 | goto out_free; | |
3765 | ||
bf118a34 AA |
3766 | args.acl_len = npages * PAGE_SIZE; |
3767 | args.acl_pgbase = 0; | |
5a006899 | 3768 | |
de040bec | 3769 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
3770 | __func__, buf, buflen, npages, args.acl_len); |
3771 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
3772 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
3773 | if (ret) |
3774 | goto out_free; | |
bf118a34 | 3775 | |
1f1ea6c2 TM |
3776 | /* Handle the case where the passed-in buffer is too short */ |
3777 | if (res.acl_flags & NFS4_ACL_TRUNC) { | |
3778 | /* Did the user only issue a request for the acl length? */ | |
3779 | if (buf == NULL) | |
3780 | goto out_ok; | |
e50a1c2e | 3781 | ret = -ERANGE; |
1f1ea6c2 | 3782 | goto out_free; |
e50a1c2e | 3783 | } |
1f1ea6c2 | 3784 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 SW |
3785 | if (buf) { |
3786 | if (res.acl_len > buflen) { | |
3787 | ret = -ERANGE; | |
3788 | goto out_free; | |
3789 | } | |
1f1ea6c2 | 3790 | _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 | 3791 | } |
1f1ea6c2 TM |
3792 | out_ok: |
3793 | ret = res.acl_len; | |
e50a1c2e | 3794 | out_free: |
bf118a34 AA |
3795 | for (i = 0; i < npages; i++) |
3796 | if (pages[i]) | |
3797 | __free_page(pages[i]); | |
331818f1 TM |
3798 | if (res.acl_scratch) |
3799 | __free_page(res.acl_scratch); | |
aa1870af BF |
3800 | return ret; |
3801 | } | |
3802 | ||
16b4289c TM |
3803 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
3804 | { | |
3805 | struct nfs4_exception exception = { }; | |
3806 | ssize_t ret; | |
3807 | do { | |
3808 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
3809 | if (ret >= 0) | |
3810 | break; | |
3811 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
3812 | } while (exception.retry); | |
3813 | return ret; | |
3814 | } | |
3815 | ||
e50a1c2e BF |
3816 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
3817 | { | |
3818 | struct nfs_server *server = NFS_SERVER(inode); | |
3819 | int ret; | |
3820 | ||
3821 | if (!nfs4_server_supports_acls(server)) | |
3822 | return -EOPNOTSUPP; | |
3823 | ret = nfs_revalidate_inode(server, inode); | |
3824 | if (ret < 0) | |
3825 | return ret; | |
08a22b39 AK |
3826 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
3827 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
3828 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
3829 | if (ret != -ENOENT) | |
bf118a34 AA |
3830 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
3831 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
3832 | return ret; |
3833 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
3834 | } | |
3835 | ||
16b4289c | 3836 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
3837 | { |
3838 | struct nfs_server *server = NFS_SERVER(inode); | |
3839 | struct page *pages[NFS4ACL_MAXPAGES]; | |
3840 | struct nfs_setaclargs arg = { | |
3841 | .fh = NFS_FH(inode), | |
3842 | .acl_pages = pages, | |
3843 | .acl_len = buflen, | |
3844 | }; | |
73c403a9 | 3845 | struct nfs_setaclres res; |
4b580ee3 BF |
3846 | struct rpc_message msg = { |
3847 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
3848 | .rpc_argp = &arg, | |
73c403a9 | 3849 | .rpc_resp = &res, |
4b580ee3 | 3850 | }; |
21f498c2 | 3851 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
e9e3d724 | 3852 | int ret, i; |
4b580ee3 BF |
3853 | |
3854 | if (!nfs4_server_supports_acls(server)) | |
3855 | return -EOPNOTSUPP; | |
21f498c2 TM |
3856 | if (npages > ARRAY_SIZE(pages)) |
3857 | return -ERANGE; | |
e9e3d724 NH |
3858 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
3859 | if (i < 0) | |
3860 | return i; | |
57ec14c5 | 3861 | nfs4_inode_return_delegation(inode); |
7c513058 | 3862 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
3863 | |
3864 | /* | |
3865 | * Free each page after tx, so the only ref left is | |
3866 | * held by the network stack | |
3867 | */ | |
3868 | for (; i > 0; i--) | |
3869 | put_page(pages[i-1]); | |
3870 | ||
08a22b39 AK |
3871 | /* |
3872 | * Acl update can result in inode attribute update. | |
3873 | * so mark the attribute cache invalid. | |
3874 | */ | |
3875 | spin_lock(&inode->i_lock); | |
3876 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
3877 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
3878 | nfs_access_zap_cache(inode); |
3879 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
3880 | return ret; |
3881 | } | |
3882 | ||
16b4289c TM |
3883 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
3884 | { | |
3885 | struct nfs4_exception exception = { }; | |
3886 | int err; | |
3887 | do { | |
3888 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3889 | __nfs4_proc_set_acl(inode, buf, buflen), | |
3890 | &exception); | |
3891 | } while (exception.retry); | |
3892 | return err; | |
3893 | } | |
3894 | ||
1da177e4 | 3895 | static int |
aa5190d0 | 3896 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 3897 | { |
aa5190d0 TM |
3898 | struct nfs_client *clp = server->nfs_client; |
3899 | ||
3900 | if (task->tk_status >= 0) | |
1da177e4 LT |
3901 | return 0; |
3902 | switch(task->tk_status) { | |
a1d0b5ee | 3903 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
3904 | case -NFS4ERR_ADMIN_REVOKED: |
3905 | case -NFS4ERR_BAD_STATEID: | |
14977489 TM |
3906 | if (state == NULL) |
3907 | break; | |
3908 | nfs_remove_bad_delegation(state->inode); | |
9e33bed5 TM |
3909 | case -NFS4ERR_OPENMODE: |
3910 | if (state == NULL) | |
3911 | break; | |
0400a6b0 TM |
3912 | nfs4_schedule_stateid_recovery(server, state); |
3913 | goto wait_on_recovery; | |
0ced63d1 TM |
3914 | case -NFS4ERR_EXPIRED: |
3915 | if (state != NULL) | |
3916 | nfs4_schedule_stateid_recovery(server, state); | |
1da177e4 | 3917 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 3918 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
3919 | nfs4_schedule_lease_recovery(clp); |
3920 | goto wait_on_recovery; | |
4745e315 AA |
3921 | #if defined(CONFIG_NFS_V4_1) |
3922 | case -NFS4ERR_BADSESSION: | |
3923 | case -NFS4ERR_BADSLOT: | |
3924 | case -NFS4ERR_BAD_HIGH_SLOT: | |
3925 | case -NFS4ERR_DEADSESSION: | |
3926 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
3927 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
3928 | case -NFS4ERR_SEQ_MISORDERED: | |
3929 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
3930 | task->tk_status); | |
9f594791 | 3931 | nfs4_schedule_session_recovery(clp->cl_session, task->tk_status); |
4745e315 AA |
3932 | task->tk_status = 0; |
3933 | return -EAGAIN; | |
3934 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 3935 | case -NFS4ERR_DELAY: |
aa5190d0 | 3936 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 3937 | case -NFS4ERR_GRACE: |
2c643488 | 3938 | case -EKEYEXPIRED: |
1da177e4 LT |
3939 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
3940 | task->tk_status = 0; | |
3941 | return -EAGAIN; | |
a8a4ae3a | 3942 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
3943 | case -NFS4ERR_OLD_STATEID: |
3944 | task->tk_status = 0; | |
3945 | return -EAGAIN; | |
3946 | } | |
3947 | task->tk_status = nfs4_map_errors(task->tk_status); | |
3948 | return 0; | |
0400a6b0 | 3949 | wait_on_recovery: |
a2c0b9e2 | 3950 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
3951 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
3952 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
3953 | task->tk_status = 0; | |
3954 | return -EAGAIN; | |
1da177e4 LT |
3955 | } |
3956 | ||
f092075d CL |
3957 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
3958 | nfs4_verifier *bootverf) | |
cd93710e CL |
3959 | { |
3960 | __be32 verf[2]; | |
3961 | ||
2c820d9a CL |
3962 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
3963 | /* An impossible timestamp guarantees this value | |
3964 | * will never match a generated boot time. */ | |
3965 | verf[0] = 0; | |
3966 | verf[1] = (__be32)(NSEC_PER_SEC + 1); | |
3967 | } else { | |
f092075d CL |
3968 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
3969 | verf[0] = (__be32)nn->boot_time.tv_sec; | |
3970 | verf[1] = (__be32)nn->boot_time.tv_nsec; | |
2c820d9a | 3971 | } |
cd93710e CL |
3972 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
3973 | } | |
3974 | ||
e984a55a CL |
3975 | static unsigned int |
3976 | nfs4_init_nonuniform_client_string(const struct nfs_client *clp, | |
3977 | char *buf, size_t len) | |
3978 | { | |
3979 | unsigned int result; | |
3980 | ||
3981 | rcu_read_lock(); | |
3982 | result = scnprintf(buf, len, "Linux NFSv4.0 %s/%s %s", | |
3983 | clp->cl_ipaddr, | |
3984 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3985 | RPC_DISPLAY_ADDR), | |
3986 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3987 | RPC_DISPLAY_PROTO)); | |
3988 | rcu_read_unlock(); | |
3989 | return result; | |
3990 | } | |
3991 | ||
3992 | static unsigned int | |
3993 | nfs4_init_uniform_client_string(const struct nfs_client *clp, | |
3994 | char *buf, size_t len) | |
3995 | { | |
6f2ea7f2 CL |
3996 | char *nodename = clp->cl_rpcclient->cl_nodename; |
3997 | ||
3998 | if (nfs4_client_id_uniquifier[0] != '\0') | |
3999 | nodename = nfs4_client_id_uniquifier; | |
e984a55a CL |
4000 | return scnprintf(buf, len, "Linux NFSv%u.%u %s", |
4001 | clp->rpc_ops->version, clp->cl_minorversion, | |
6f2ea7f2 | 4002 | nodename); |
e984a55a CL |
4003 | } |
4004 | ||
6bbb4ae8 CL |
4005 | /** |
4006 | * nfs4_proc_setclientid - Negotiate client ID | |
4007 | * @clp: state data structure | |
4008 | * @program: RPC program for NFSv4 callback service | |
4009 | * @port: IP port number for NFS4 callback service | |
4010 | * @cred: RPC credential to use for this call | |
4011 | * @res: where to place the result | |
4012 | * | |
4013 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4014 | */ | |
bb8b27e5 TM |
4015 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
4016 | unsigned short port, struct rpc_cred *cred, | |
4017 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
4018 | { |
4019 | nfs4_verifier sc_verifier; | |
4020 | struct nfs4_setclientid setclientid = { | |
4021 | .sc_verifier = &sc_verifier, | |
4022 | .sc_prog = program, | |
f4eecd5d | 4023 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
4024 | }; |
4025 | struct rpc_message msg = { | |
4026 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
4027 | .rpc_argp = &setclientid, | |
bb8b27e5 | 4028 | .rpc_resp = res, |
286d7d6a | 4029 | .rpc_cred = cred, |
1da177e4 | 4030 | }; |
6bbb4ae8 | 4031 | int status; |
1da177e4 | 4032 | |
de734831 | 4033 | /* nfs_client_id4 */ |
f092075d | 4034 | nfs4_init_boot_verifier(clp, &sc_verifier); |
e984a55a CL |
4035 | if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags)) |
4036 | setclientid.sc_name_len = | |
4037 | nfs4_init_uniform_client_string(clp, | |
4038 | setclientid.sc_name, | |
4039 | sizeof(setclientid.sc_name)); | |
4040 | else | |
4041 | setclientid.sc_name_len = | |
4042 | nfs4_init_nonuniform_client_string(clp, | |
4043 | setclientid.sc_name, | |
4044 | sizeof(setclientid.sc_name)); | |
de734831 | 4045 | /* cb_client4 */ |
e984a55a | 4046 | rcu_read_lock(); |
de734831 | 4047 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, |
d4d3c507 CL |
4048 | sizeof(setclientid.sc_netid), |
4049 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4050 | RPC_DISPLAY_NETID)); | |
de734831 CL |
4051 | rcu_read_unlock(); |
4052 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, | |
d4d3c507 | 4053 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
4054 | clp->cl_ipaddr, port >> 8, port & 255); |
4055 | ||
6bbb4ae8 CL |
4056 | dprintk("NFS call setclientid auth=%s, '%.*s'\n", |
4057 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4058 | setclientid.sc_name_len, setclientid.sc_name); | |
4059 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
4060 | dprintk("NFS reply setclientid: %d\n", status); | |
4061 | return status; | |
1da177e4 LT |
4062 | } |
4063 | ||
6bbb4ae8 CL |
4064 | /** |
4065 | * nfs4_proc_setclientid_confirm - Confirm client ID | |
4066 | * @clp: state data structure | |
4067 | * @res: result of a previous SETCLIENTID | |
4068 | * @cred: RPC credential to use for this call | |
4069 | * | |
4070 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4071 | */ | |
fd954ae1 | 4072 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
4073 | struct nfs4_setclientid_res *arg, |
4074 | struct rpc_cred *cred) | |
1da177e4 LT |
4075 | { |
4076 | struct nfs_fsinfo fsinfo; | |
4077 | struct rpc_message msg = { | |
4078 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 4079 | .rpc_argp = arg, |
1da177e4 | 4080 | .rpc_resp = &fsinfo, |
286d7d6a | 4081 | .rpc_cred = cred, |
1da177e4 LT |
4082 | }; |
4083 | unsigned long now; | |
4084 | int status; | |
4085 | ||
6bbb4ae8 CL |
4086 | dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", |
4087 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4088 | clp->cl_clientid); | |
1da177e4 | 4089 | now = jiffies; |
1bd714f2 | 4090 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
4091 | if (status == 0) { |
4092 | spin_lock(&clp->cl_lock); | |
4093 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
4094 | clp->cl_last_renewal = now; | |
4095 | spin_unlock(&clp->cl_lock); | |
4096 | } | |
6bbb4ae8 | 4097 | dprintk("NFS reply setclientid_confirm: %d\n", status); |
1da177e4 LT |
4098 | return status; |
4099 | } | |
4100 | ||
fe650407 TM |
4101 | struct nfs4_delegreturndata { |
4102 | struct nfs4_delegreturnargs args; | |
fa178f29 | 4103 | struct nfs4_delegreturnres res; |
fe650407 TM |
4104 | struct nfs_fh fh; |
4105 | nfs4_stateid stateid; | |
26e976a8 | 4106 | unsigned long timestamp; |
fa178f29 | 4107 | struct nfs_fattr fattr; |
fe650407 TM |
4108 | int rpc_status; |
4109 | }; | |
4110 | ||
fe650407 TM |
4111 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
4112 | { | |
4113 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 4114 | |
14516c3a TM |
4115 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4116 | return; | |
938e1010 | 4117 | |
79708861 RL |
4118 | switch (task->tk_status) { |
4119 | case -NFS4ERR_STALE_STATEID: | |
4120 | case -NFS4ERR_EXPIRED: | |
4121 | case 0: | |
fa178f29 | 4122 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
4123 | break; |
4124 | default: | |
4125 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
4126 | -EAGAIN) { | |
d00c5d43 | 4127 | rpc_restart_call_prepare(task); |
79708861 RL |
4128 | return; |
4129 | } | |
4130 | } | |
4131 | data->rpc_status = task->tk_status; | |
fe650407 TM |
4132 | } |
4133 | ||
4134 | static void nfs4_delegreturn_release(void *calldata) | |
4135 | { | |
fe650407 TM |
4136 | kfree(calldata); |
4137 | } | |
4138 | ||
938e1010 AA |
4139 | #if defined(CONFIG_NFS_V4_1) |
4140 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
4141 | { | |
4142 | struct nfs4_delegreturndata *d_data; | |
4143 | ||
4144 | d_data = (struct nfs4_delegreturndata *)data; | |
4145 | ||
d9afbd1b TM |
4146 | nfs4_setup_sequence(d_data->res.server, |
4147 | &d_data->args.seq_args, | |
4148 | &d_data->res.seq_res, | |
4149 | task); | |
938e1010 AA |
4150 | } |
4151 | #endif /* CONFIG_NFS_V4_1 */ | |
4152 | ||
c8d149f3 | 4153 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
4154 | #if defined(CONFIG_NFS_V4_1) |
4155 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
4156 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
4157 | .rpc_call_done = nfs4_delegreturn_done, |
4158 | .rpc_release = nfs4_delegreturn_release, | |
4159 | }; | |
4160 | ||
e6f81075 | 4161 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
4162 | { |
4163 | struct nfs4_delegreturndata *data; | |
fa178f29 | 4164 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 4165 | struct rpc_task *task; |
5138fde0 TM |
4166 | struct rpc_message msg = { |
4167 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
4168 | .rpc_cred = cred, | |
4169 | }; | |
c970aa85 TM |
4170 | struct rpc_task_setup task_setup_data = { |
4171 | .rpc_client = server->client, | |
5138fde0 | 4172 | .rpc_message = &msg, |
c970aa85 TM |
4173 | .callback_ops = &nfs4_delegreturn_ops, |
4174 | .flags = RPC_TASK_ASYNC, | |
4175 | }; | |
e6f81075 | 4176 | int status = 0; |
fe650407 | 4177 | |
8535b2be | 4178 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
4179 | if (data == NULL) |
4180 | return -ENOMEM; | |
9d12b216 | 4181 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
4182 | data->args.fhandle = &data->fh; |
4183 | data->args.stateid = &data->stateid; | |
9e907fec | 4184 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 4185 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 4186 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
4187 | data->res.fattr = &data->fattr; |
4188 | data->res.server = server; | |
5138fde0 | 4189 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 4190 | data->timestamp = jiffies; |
fe650407 TM |
4191 | data->rpc_status = 0; |
4192 | ||
c970aa85 | 4193 | task_setup_data.callback_data = data; |
1174dd1f TM |
4194 | msg.rpc_argp = &data->args; |
4195 | msg.rpc_resp = &data->res; | |
c970aa85 | 4196 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 4197 | if (IS_ERR(task)) |
fe650407 | 4198 | return PTR_ERR(task); |
e6f81075 TM |
4199 | if (!issync) |
4200 | goto out; | |
fe650407 | 4201 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
4202 | if (status != 0) |
4203 | goto out; | |
4204 | status = data->rpc_status; | |
e144cbcc TM |
4205 | if (status == 0) |
4206 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
4207 | else | |
4208 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 4209 | out: |
e6b3c4db | 4210 | rpc_put_task(task); |
fe650407 | 4211 | return status; |
1da177e4 LT |
4212 | } |
4213 | ||
e6f81075 | 4214 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
4215 | { |
4216 | struct nfs_server *server = NFS_SERVER(inode); | |
4217 | struct nfs4_exception exception = { }; | |
4218 | int err; | |
4219 | do { | |
e6f81075 | 4220 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
4221 | switch (err) { |
4222 | case -NFS4ERR_STALE_STATEID: | |
4223 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
4224 | case 0: |
4225 | return 0; | |
4226 | } | |
4227 | err = nfs4_handle_exception(server, err, &exception); | |
4228 | } while (exception.retry); | |
4229 | return err; | |
4230 | } | |
4231 | ||
4232 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
4233 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
4234 | ||
4235 | /* | |
4236 | * sleep, with exponential backoff, and retry the LOCK operation. | |
4237 | */ | |
4238 | static unsigned long | |
4239 | nfs4_set_lock_task_retry(unsigned long timeout) | |
4240 | { | |
d310310c | 4241 | freezable_schedule_timeout_killable(timeout); |
1da177e4 LT |
4242 | timeout <<= 1; |
4243 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
4244 | return NFS4_LOCK_MAXTIMEOUT; | |
4245 | return timeout; | |
4246 | } | |
4247 | ||
1da177e4 LT |
4248 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4249 | { | |
4250 | struct inode *inode = state->inode; | |
4251 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 4252 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 4253 | struct nfs_lockt_args arg = { |
1da177e4 | 4254 | .fh = NFS_FH(inode), |
911d1aaf | 4255 | .fl = request, |
1da177e4 | 4256 | }; |
911d1aaf TM |
4257 | struct nfs_lockt_res res = { |
4258 | .denied = request, | |
1da177e4 LT |
4259 | }; |
4260 | struct rpc_message msg = { | |
4261 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
4262 | .rpc_argp = &arg, | |
4263 | .rpc_resp = &res, | |
4264 | .rpc_cred = state->owner->so_cred, | |
4265 | }; | |
1da177e4 LT |
4266 | struct nfs4_lock_state *lsp; |
4267 | int status; | |
4268 | ||
911d1aaf | 4269 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
4270 | status = nfs4_set_lock_state(state, request); |
4271 | if (status != 0) | |
4272 | goto out; | |
4273 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 4274 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4275 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 4276 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
4277 | switch (status) { |
4278 | case 0: | |
4279 | request->fl_type = F_UNLCK; | |
4280 | break; | |
4281 | case -NFS4ERR_DENIED: | |
4282 | status = 0; | |
1da177e4 | 4283 | } |
70cc6487 | 4284 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 4285 | out: |
1da177e4 LT |
4286 | return status; |
4287 | } | |
4288 | ||
4289 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4290 | { | |
4291 | struct nfs4_exception exception = { }; | |
4292 | int err; | |
4293 | ||
4294 | do { | |
4295 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
4296 | _nfs4_proc_getlk(state, cmd, request), | |
4297 | &exception); | |
4298 | } while (exception.retry); | |
4299 | return err; | |
4300 | } | |
4301 | ||
4302 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
4303 | { | |
4304 | int res = 0; | |
4305 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
4306 | case FL_POSIX: | |
4307 | res = posix_lock_file_wait(file, fl); | |
4308 | break; | |
4309 | case FL_FLOCK: | |
4310 | res = flock_lock_file_wait(file, fl); | |
4311 | break; | |
4312 | default: | |
4313 | BUG(); | |
4314 | } | |
1da177e4 LT |
4315 | return res; |
4316 | } | |
4317 | ||
faf5f49c | 4318 | struct nfs4_unlockdata { |
911d1aaf TM |
4319 | struct nfs_locku_args arg; |
4320 | struct nfs_locku_res res; | |
faf5f49c TM |
4321 | struct nfs4_lock_state *lsp; |
4322 | struct nfs_open_context *ctx; | |
911d1aaf TM |
4323 | struct file_lock fl; |
4324 | const struct nfs_server *server; | |
26e976a8 | 4325 | unsigned long timestamp; |
faf5f49c TM |
4326 | }; |
4327 | ||
911d1aaf TM |
4328 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
4329 | struct nfs_open_context *ctx, | |
4330 | struct nfs4_lock_state *lsp, | |
4331 | struct nfs_seqid *seqid) | |
4332 | { | |
4333 | struct nfs4_unlockdata *p; | |
4334 | struct inode *inode = lsp->ls_state->inode; | |
4335 | ||
8535b2be | 4336 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
4337 | if (p == NULL) |
4338 | return NULL; | |
4339 | p->arg.fh = NFS_FH(inode); | |
4340 | p->arg.fl = &p->fl; | |
4341 | p->arg.seqid = seqid; | |
c1d51931 | 4342 | p->res.seqid = seqid; |
911d1aaf TM |
4343 | p->arg.stateid = &lsp->ls_stateid; |
4344 | p->lsp = lsp; | |
4345 | atomic_inc(&lsp->ls_count); | |
4346 | /* Ensure we don't close file until we're done freeing locks! */ | |
4347 | p->ctx = get_nfs_open_context(ctx); | |
4348 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4349 | p->server = NFS_SERVER(inode); | |
4350 | return p; | |
4351 | } | |
4352 | ||
06f814a3 | 4353 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 4354 | { |
963d8fe5 | 4355 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 4356 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
4357 | nfs4_put_lock_state(calldata->lsp); |
4358 | put_nfs_open_context(calldata->ctx); | |
4359 | kfree(calldata); | |
faf5f49c TM |
4360 | } |
4361 | ||
963d8fe5 | 4362 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 4363 | { |
963d8fe5 | 4364 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4365 | |
14516c3a TM |
4366 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
4367 | return; | |
faf5f49c TM |
4368 | switch (task->tk_status) { |
4369 | case 0: | |
f597c537 TM |
4370 | nfs4_stateid_copy(&calldata->lsp->ls_stateid, |
4371 | &calldata->res.stateid); | |
26e976a8 | 4372 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 4373 | break; |
9e33bed5 TM |
4374 | case -NFS4ERR_BAD_STATEID: |
4375 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
4376 | case -NFS4ERR_STALE_STATEID: |
4377 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
4378 | break; |
4379 | default: | |
9e33bed5 | 4380 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
d00c5d43 | 4381 | rpc_restart_call_prepare(task); |
faf5f49c | 4382 | } |
2b1bc308 | 4383 | nfs_release_seqid(calldata->arg.seqid); |
faf5f49c TM |
4384 | } |
4385 | ||
4ce70ada | 4386 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 4387 | { |
4ce70ada | 4388 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4389 | |
911d1aaf | 4390 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c | 4391 | return; |
795a88c9 | 4392 | if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) { |
963d8fe5 TM |
4393 | /* Note: exit _without_ running nfs4_locku_done */ |
4394 | task->tk_action = NULL; | |
b75ad4cd | 4395 | nfs4_sequence_done(task, &calldata->res.seq_res); |
faf5f49c TM |
4396 | return; |
4397 | } | |
26e976a8 | 4398 | calldata->timestamp = jiffies; |
035168ab | 4399 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 4400 | &calldata->arg.seq_args, |
2240a9e2 TM |
4401 | &calldata->res.seq_res, |
4402 | task) != 0) | |
4403 | nfs_release_seqid(calldata->arg.seqid); | |
faf5f49c TM |
4404 | } |
4405 | ||
963d8fe5 | 4406 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 4407 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 4408 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 4409 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
4410 | }; |
4411 | ||
a5d16a4d TM |
4412 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
4413 | struct nfs_open_context *ctx, | |
4414 | struct nfs4_lock_state *lsp, | |
4415 | struct nfs_seqid *seqid) | |
4416 | { | |
4417 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
4418 | struct rpc_message msg = { |
4419 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
4420 | .rpc_cred = ctx->cred, | |
4421 | }; | |
c970aa85 TM |
4422 | struct rpc_task_setup task_setup_data = { |
4423 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 4424 | .rpc_message = &msg, |
c970aa85 | 4425 | .callback_ops = &nfs4_locku_ops, |
101070ca | 4426 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4427 | .flags = RPC_TASK_ASYNC, |
4428 | }; | |
a5d16a4d | 4429 | |
137d6aca FF |
4430 | /* Ensure this is an unlock - when canceling a lock, the |
4431 | * canceled lock is passed in, and it won't be an unlock. | |
4432 | */ | |
4433 | fl->fl_type = F_UNLCK; | |
4434 | ||
a5d16a4d TM |
4435 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
4436 | if (data == NULL) { | |
4437 | nfs_free_seqid(seqid); | |
4438 | return ERR_PTR(-ENOMEM); | |
4439 | } | |
4440 | ||
9d12b216 | 4441 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4442 | msg.rpc_argp = &data->arg; |
4443 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4444 | task_setup_data.callback_data = data; |
4445 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
4446 | } |
4447 | ||
faf5f49c TM |
4448 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
4449 | { | |
19e03c57 | 4450 | struct nfs_inode *nfsi = NFS_I(state->inode); |
911d1aaf | 4451 | struct nfs_seqid *seqid; |
1da177e4 | 4452 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
4453 | struct rpc_task *task; |
4454 | int status = 0; | |
536ff0f8 | 4455 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 4456 | |
8d0a8a9d | 4457 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
4458 | /* Unlock _before_ we do the RPC call */ |
4459 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
4460 | down_read(&nfsi->rwsem); |
4461 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
4462 | up_read(&nfsi->rwsem); | |
9b073574 | 4463 | goto out; |
19e03c57 TM |
4464 | } |
4465 | up_read(&nfsi->rwsem); | |
8d0a8a9d | 4466 | if (status != 0) |
9b073574 TM |
4467 | goto out; |
4468 | /* Is this a delegated lock? */ | |
4469 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
4470 | goto out; | |
8d0a8a9d | 4471 | lsp = request->fl_u.nfs4_fl.owner; |
8535b2be | 4472 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 4473 | status = -ENOMEM; |
911d1aaf | 4474 | if (seqid == NULL) |
9b073574 | 4475 | goto out; |
cd3758e3 | 4476 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
4477 | status = PTR_ERR(task); |
4478 | if (IS_ERR(task)) | |
9b073574 | 4479 | goto out; |
a5d16a4d | 4480 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 4481 | rpc_put_task(task); |
9b073574 | 4482 | out: |
536ff0f8 | 4483 | request->fl_flags = fl_flags; |
1da177e4 LT |
4484 | return status; |
4485 | } | |
4486 | ||
a5d16a4d TM |
4487 | struct nfs4_lockdata { |
4488 | struct nfs_lock_args arg; | |
4489 | struct nfs_lock_res res; | |
4490 | struct nfs4_lock_state *lsp; | |
4491 | struct nfs_open_context *ctx; | |
4492 | struct file_lock fl; | |
26e976a8 | 4493 | unsigned long timestamp; |
a5d16a4d TM |
4494 | int rpc_status; |
4495 | int cancelled; | |
66179efe | 4496 | struct nfs_server *server; |
a5d16a4d TM |
4497 | }; |
4498 | ||
4499 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
4500 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
4501 | gfp_t gfp_mask) | |
1da177e4 | 4502 | { |
a5d16a4d TM |
4503 | struct nfs4_lockdata *p; |
4504 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 4505 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 4506 | |
8535b2be | 4507 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
4508 | if (p == NULL) |
4509 | return NULL; | |
4510 | ||
4511 | p->arg.fh = NFS_FH(inode); | |
4512 | p->arg.fl = &p->fl; | |
8535b2be | 4513 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4514 | if (p->arg.open_seqid == NULL) |
4515 | goto out_free; | |
8535b2be | 4516 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4517 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4518 | goto out_free_seqid; |
a5d16a4d | 4519 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4520 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 4521 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4522 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 4523 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4524 | p->lsp = lsp; |
66179efe | 4525 | p->server = server; |
a5d16a4d TM |
4526 | atomic_inc(&lsp->ls_count); |
4527 | p->ctx = get_nfs_open_context(ctx); | |
4528 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4529 | return p; | |
2f74c0a0 TM |
4530 | out_free_seqid: |
4531 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4532 | out_free: |
4533 | kfree(p); | |
4534 | return NULL; | |
4535 | } | |
4536 | ||
4537 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4538 | { | |
4539 | struct nfs4_lockdata *data = calldata; | |
4540 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4541 | |
3110ff80 | 4542 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
4543 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
4544 | return; | |
a5d16a4d TM |
4545 | /* Do we need to do an open_to_lock_owner? */ |
4546 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
8fe72bac | 4547 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) { |
2240a9e2 | 4548 | goto out_release_lock_seqid; |
8fe72bac | 4549 | } |
a5d16a4d TM |
4550 | data->arg.open_stateid = &state->stateid; |
4551 | data->arg.new_lock_owner = 1; | |
c1d51931 | 4552 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4553 | } else |
4554 | data->arg.new_lock_owner = 0; | |
26e976a8 | 4555 | data->timestamp = jiffies; |
035168ab TM |
4556 | if (nfs4_setup_sequence(data->server, |
4557 | &data->arg.seq_args, | |
2240a9e2 | 4558 | &data->res.seq_res, |
d9afbd1b | 4559 | task) == 0) |
66179efe | 4560 | return; |
2240a9e2 TM |
4561 | nfs_release_seqid(data->arg.open_seqid); |
4562 | out_release_lock_seqid: | |
4563 | nfs_release_seqid(data->arg.lock_seqid); | |
8fe72bac | 4564 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
b257957e AB |
4565 | } |
4566 | ||
a5d16a4d TM |
4567 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4568 | { | |
4569 | struct nfs4_lockdata *data = calldata; | |
4570 | ||
3110ff80 | 4571 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4572 | |
14516c3a TM |
4573 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4574 | return; | |
66179efe | 4575 | |
a5d16a4d | 4576 | data->rpc_status = task->tk_status; |
a5d16a4d | 4577 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4578 | if (data->rpc_status == 0) |
4579 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4580 | else | |
4581 | goto out; | |
4582 | } | |
4583 | if (data->rpc_status == 0) { | |
f597c537 | 4584 | nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid); |
795a88c9 | 4585 | set_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags); |
3d4ff43d | 4586 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 4587 | } |
a5d16a4d | 4588 | out: |
3110ff80 | 4589 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4590 | } |
4591 | ||
4592 | static void nfs4_lock_release(void *calldata) | |
4593 | { | |
4594 | struct nfs4_lockdata *data = calldata; | |
4595 | ||
3110ff80 | 4596 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4597 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4598 | if (data->cancelled != 0) { |
4599 | struct rpc_task *task; | |
4600 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4601 | data->arg.lock_seqid); | |
4602 | if (!IS_ERR(task)) | |
bf294b41 | 4603 | rpc_put_task_async(task); |
3110ff80 | 4604 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4605 | } else |
4606 | nfs_free_seqid(data->arg.lock_seqid); | |
4607 | nfs4_put_lock_state(data->lsp); | |
4608 | put_nfs_open_context(data->ctx); | |
4609 | kfree(data); | |
3110ff80 | 4610 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4611 | } |
4612 | ||
4613 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4614 | .rpc_call_prepare = nfs4_lock_prepare, | |
4615 | .rpc_call_done = nfs4_lock_done, | |
4616 | .rpc_release = nfs4_lock_release, | |
4617 | }; | |
4618 | ||
2bee72a6 TM |
4619 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4620 | { | |
2bee72a6 TM |
4621 | switch (error) { |
4622 | case -NFS4ERR_ADMIN_REVOKED: | |
4623 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 4624 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 | 4625 | if (new_lock_owner != 0 || |
795a88c9 | 4626 | test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0) |
ecac799a | 4627 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
4628 | break; |
4629 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 4630 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
4631 | case -NFS4ERR_EXPIRED: |
4632 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
4633 | }; |
4634 | } | |
4635 | ||
afe6c27c | 4636 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4637 | { |
4638 | struct nfs4_lockdata *data; | |
4639 | struct rpc_task *task; | |
5138fde0 TM |
4640 | struct rpc_message msg = { |
4641 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4642 | .rpc_cred = state->owner->so_cred, | |
4643 | }; | |
c970aa85 TM |
4644 | struct rpc_task_setup task_setup_data = { |
4645 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4646 | .rpc_message = &msg, |
c970aa85 | 4647 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4648 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4649 | .flags = RPC_TASK_ASYNC, |
4650 | }; | |
a5d16a4d TM |
4651 | int ret; |
4652 | ||
3110ff80 | 4653 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4654 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4655 | fl->fl_u.nfs4_fl.owner, |
4656 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4657 | if (data == NULL) |
4658 | return -ENOMEM; | |
4659 | if (IS_SETLKW(cmd)) | |
4660 | data->arg.block = 1; | |
9d12b216 | 4661 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4662 | msg.rpc_argp = &data->arg; |
4663 | msg.rpc_resp = &data->res; | |
c970aa85 | 4664 | task_setup_data.callback_data = data; |
8fe72bac TM |
4665 | if (recovery_type > NFS_LOCK_NEW) { |
4666 | if (recovery_type == NFS_LOCK_RECLAIM) | |
4667 | data->arg.reclaim = NFS_LOCK_RECLAIM; | |
4668 | nfs4_set_sequence_privileged(&data->arg.seq_args); | |
4669 | } | |
c970aa85 | 4670 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 4671 | if (IS_ERR(task)) |
a5d16a4d | 4672 | return PTR_ERR(task); |
a5d16a4d TM |
4673 | ret = nfs4_wait_for_completion_rpc_task(task); |
4674 | if (ret == 0) { | |
4675 | ret = data->rpc_status; | |
2bee72a6 TM |
4676 | if (ret) |
4677 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4678 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4679 | } else |
4680 | data->cancelled = 1; | |
e6b3c4db | 4681 | rpc_put_task(task); |
3110ff80 | 4682 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4683 | return ret; |
1da177e4 LT |
4684 | } |
4685 | ||
4686 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4687 | { | |
202b50dc | 4688 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4689 | struct nfs4_exception exception = { |
4690 | .inode = state->inode, | |
4691 | }; | |
202b50dc TM |
4692 | int err; |
4693 | ||
4694 | do { | |
42a2d13e TM |
4695 | /* Cache the lock if possible... */ |
4696 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4697 | return 0; | |
afe6c27c | 4698 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 4699 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
4700 | break; |
4701 | nfs4_handle_exception(server, err, &exception); | |
4702 | } while (exception.retry); | |
4703 | return err; | |
1da177e4 LT |
4704 | } |
4705 | ||
4706 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4707 | { | |
202b50dc | 4708 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4709 | struct nfs4_exception exception = { |
4710 | .inode = state->inode, | |
4711 | }; | |
202b50dc TM |
4712 | int err; |
4713 | ||
6bfc93ef TM |
4714 | err = nfs4_set_lock_state(state, request); |
4715 | if (err != 0) | |
4716 | return err; | |
202b50dc | 4717 | do { |
42a2d13e TM |
4718 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4719 | return 0; | |
afe6c27c | 4720 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
4721 | switch (err) { |
4722 | default: | |
4723 | goto out; | |
4724 | case -NFS4ERR_GRACE: | |
4725 | case -NFS4ERR_DELAY: | |
4726 | nfs4_handle_exception(server, err, &exception); | |
4727 | err = 0; | |
4728 | } | |
202b50dc | 4729 | } while (exception.retry); |
a9ed2e25 | 4730 | out: |
202b50dc | 4731 | return err; |
1da177e4 LT |
4732 | } |
4733 | ||
f062eb6c | 4734 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd CL |
4735 | /** |
4736 | * nfs41_check_expired_locks - possibly free a lock stateid | |
4737 | * | |
4738 | * @state: NFSv4 state for an inode | |
4739 | * | |
4740 | * Returns NFS_OK if recovery for this stateid is now finished. | |
4741 | * Otherwise a negative NFS4ERR value is returned. | |
4742 | */ | |
b01dd1d8 | 4743 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 4744 | { |
eb64cf96 | 4745 | int status, ret = -NFS4ERR_BAD_STATEID; |
b01dd1d8 | 4746 | struct nfs4_lock_state *lsp; |
f062eb6c BS |
4747 | struct nfs_server *server = NFS_SERVER(state->inode); |
4748 | ||
b01dd1d8 | 4749 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
795a88c9 | 4750 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { |
b01dd1d8 BS |
4751 | status = nfs41_test_stateid(server, &lsp->ls_stateid); |
4752 | if (status != NFS_OK) { | |
3e60ffdd CL |
4753 | /* Free the stateid unless the server |
4754 | * informs us the stateid is unrecognized. */ | |
89af2739 CL |
4755 | if (status != -NFS4ERR_BAD_STATEID) |
4756 | nfs41_free_stateid(server, | |
4757 | &lsp->ls_stateid); | |
795a88c9 | 4758 | clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); |
b01dd1d8 BS |
4759 | ret = status; |
4760 | } | |
4761 | } | |
4762 | }; | |
4763 | ||
4764 | return ret; | |
4765 | } | |
4766 | ||
4767 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4768 | { | |
4769 | int status = NFS_OK; | |
4770 | ||
4771 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
4772 | status = nfs41_check_expired_locks(state); | |
eb64cf96 CL |
4773 | if (status != NFS_OK) |
4774 | status = nfs4_lock_expired(state, request); | |
4775 | return status; | |
f062eb6c BS |
4776 | } |
4777 | #endif | |
4778 | ||
1da177e4 LT |
4779 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4780 | { | |
19e03c57 | 4781 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 4782 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 4783 | int status = -ENOLCK; |
1da177e4 | 4784 | |
8e469ebd TM |
4785 | if ((fl_flags & FL_POSIX) && |
4786 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
4787 | goto out; | |
6bfc93ef | 4788 | /* Is this a delegated open? */ |
6bfc93ef TM |
4789 | status = nfs4_set_lock_state(state, request); |
4790 | if (status != 0) | |
4791 | goto out; | |
01c3b861 TM |
4792 | request->fl_flags |= FL_ACCESS; |
4793 | status = do_vfs_lock(request->fl_file, request); | |
4794 | if (status < 0) | |
4795 | goto out; | |
19e03c57 | 4796 | down_read(&nfsi->rwsem); |
01c3b861 | 4797 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 4798 | /* Yes: cache locks! */ |
01c3b861 | 4799 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
4800 | request->fl_flags = fl_flags & ~FL_SLEEP; |
4801 | status = do_vfs_lock(request->fl_file, request); | |
4802 | goto out_unlock; | |
01c3b861 | 4803 | } |
afe6c27c | 4804 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 4805 | if (status != 0) |
01c3b861 | 4806 | goto out_unlock; |
6bfc93ef | 4807 | /* Note: we always want to sleep here! */ |
01c3b861 | 4808 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 4809 | if (do_vfs_lock(request->fl_file, request) < 0) |
a030889a WAA |
4810 | printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " |
4811 | "manager!\n", __func__); | |
01c3b861 | 4812 | out_unlock: |
19e03c57 | 4813 | up_read(&nfsi->rwsem); |
01c3b861 TM |
4814 | out: |
4815 | request->fl_flags = fl_flags; | |
1da177e4 LT |
4816 | return status; |
4817 | } | |
4818 | ||
4819 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4820 | { | |
a1d0b5ee TM |
4821 | struct nfs4_exception exception = { |
4822 | .state = state, | |
05ffe24f | 4823 | .inode = state->inode, |
a1d0b5ee | 4824 | }; |
1da177e4 LT |
4825 | int err; |
4826 | ||
4827 | do { | |
965b5d67 TM |
4828 | err = _nfs4_proc_setlk(state, cmd, request); |
4829 | if (err == -NFS4ERR_DENIED) | |
4830 | err = -EAGAIN; | |
1da177e4 | 4831 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 4832 | err, &exception); |
1da177e4 LT |
4833 | } while (exception.retry); |
4834 | return err; | |
4835 | } | |
4836 | ||
4837 | static int | |
4838 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
4839 | { | |
4840 | struct nfs_open_context *ctx; | |
4841 | struct nfs4_state *state; | |
4842 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
4843 | int status; | |
4844 | ||
4845 | /* verify open state */ | |
cd3758e3 | 4846 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
4847 | state = ctx->state; |
4848 | ||
4849 | if (request->fl_start < 0 || request->fl_end < 0) | |
4850 | return -EINVAL; | |
4851 | ||
d953126a TM |
4852 | if (IS_GETLK(cmd)) { |
4853 | if (state != NULL) | |
4854 | return nfs4_proc_getlk(state, F_GETLK, request); | |
4855 | return 0; | |
4856 | } | |
1da177e4 LT |
4857 | |
4858 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
4859 | return -EINVAL; | |
4860 | ||
d953126a TM |
4861 | if (request->fl_type == F_UNLCK) { |
4862 | if (state != NULL) | |
4863 | return nfs4_proc_unlck(state, cmd, request); | |
4864 | return 0; | |
4865 | } | |
1da177e4 | 4866 | |
d953126a TM |
4867 | if (state == NULL) |
4868 | return -ENOLCK; | |
55725513 TM |
4869 | /* |
4870 | * Don't rely on the VFS having checked the file open mode, | |
4871 | * since it won't do this for flock() locks. | |
4872 | */ | |
f44106e2 | 4873 | switch (request->fl_type) { |
55725513 TM |
4874 | case F_RDLCK: |
4875 | if (!(filp->f_mode & FMODE_READ)) | |
4876 | return -EBADF; | |
4877 | break; | |
4878 | case F_WRLCK: | |
4879 | if (!(filp->f_mode & FMODE_WRITE)) | |
4880 | return -EBADF; | |
4881 | } | |
4882 | ||
1da177e4 LT |
4883 | do { |
4884 | status = nfs4_proc_setlk(state, cmd, request); | |
4885 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
4886 | break; | |
4887 | timeout = nfs4_set_lock_task_retry(timeout); | |
4888 | status = -ERESTARTSYS; | |
4889 | if (signalled()) | |
4890 | break; | |
4891 | } while(status < 0); | |
1da177e4 LT |
4892 | return status; |
4893 | } | |
4894 | ||
888e694c TM |
4895 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
4896 | { | |
4897 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4898 | struct nfs4_exception exception = { }; | |
4899 | int err; | |
4900 | ||
4901 | err = nfs4_set_lock_state(state, fl); | |
4902 | if (err != 0) | |
4903 | goto out; | |
4904 | do { | |
afe6c27c | 4905 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
d5122201 TM |
4906 | switch (err) { |
4907 | default: | |
a030889a WAA |
4908 | printk(KERN_ERR "NFS: %s: unhandled error " |
4909 | "%d.\n", __func__, err); | |
d5122201 | 4910 | case 0: |
965b5d67 | 4911 | case -ESTALE: |
d5122201 TM |
4912 | goto out; |
4913 | case -NFS4ERR_EXPIRED: | |
0ced63d1 | 4914 | nfs4_schedule_stateid_recovery(server, state); |
d5122201 | 4915 | case -NFS4ERR_STALE_CLIENTID: |
965b5d67 | 4916 | case -NFS4ERR_STALE_STATEID: |
0400a6b0 TM |
4917 | nfs4_schedule_lease_recovery(server->nfs_client); |
4918 | goto out; | |
74e7bb73 RL |
4919 | case -NFS4ERR_BADSESSION: |
4920 | case -NFS4ERR_BADSLOT: | |
4921 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4922 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4923 | case -NFS4ERR_DEADSESSION: | |
9f594791 | 4924 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); |
d5122201 | 4925 | goto out; |
965b5d67 TM |
4926 | case -ERESTARTSYS: |
4927 | /* | |
4928 | * The show must go on: exit, but mark the | |
4929 | * stateid as needing recovery. | |
4930 | */ | |
a1d0b5ee | 4931 | case -NFS4ERR_DELEG_REVOKED: |
965b5d67 TM |
4932 | case -NFS4ERR_ADMIN_REVOKED: |
4933 | case -NFS4ERR_BAD_STATEID: | |
4934 | case -NFS4ERR_OPENMODE: | |
0400a6b0 | 4935 | nfs4_schedule_stateid_recovery(server, state); |
965b5d67 TM |
4936 | err = 0; |
4937 | goto out; | |
168667c4 TM |
4938 | case -EKEYEXPIRED: |
4939 | /* | |
4940 | * User RPCSEC_GSS context has expired. | |
4941 | * We cannot recover this stateid now, so | |
4942 | * skip it and allow recovery thread to | |
4943 | * proceed. | |
4944 | */ | |
4945 | err = 0; | |
4946 | goto out; | |
965b5d67 TM |
4947 | case -ENOMEM: |
4948 | case -NFS4ERR_DENIED: | |
4949 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
4950 | err = 0; | |
4951 | goto out; | |
d5122201 TM |
4952 | case -NFS4ERR_DELAY: |
4953 | break; | |
4954 | } | |
888e694c TM |
4955 | err = nfs4_handle_exception(server, err, &exception); |
4956 | } while (exception.retry); | |
4957 | out: | |
4958 | return err; | |
4959 | } | |
6b3b5496 | 4960 | |
cf470c3e TM |
4961 | struct nfs_release_lockowner_data { |
4962 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 4963 | struct nfs_server *server; |
cf470c3e TM |
4964 | struct nfs_release_lockowner_args args; |
4965 | }; | |
4966 | ||
d3c7b7cc TM |
4967 | static void nfs4_release_lockowner_release(void *calldata) |
4968 | { | |
cf470c3e | 4969 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 4970 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
4971 | kfree(calldata); |
4972 | } | |
4973 | ||
17280175 | 4974 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
d3c7b7cc TM |
4975 | .rpc_release = nfs4_release_lockowner_release, |
4976 | }; | |
4977 | ||
cf470c3e | 4978 | int nfs4_release_lockowner(struct nfs4_lock_state *lsp) |
d3c7b7cc TM |
4979 | { |
4980 | struct nfs_server *server = lsp->ls_state->owner->so_server; | |
cf470c3e | 4981 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
4982 | struct rpc_message msg = { |
4983 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
4984 | }; | |
4985 | ||
4986 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
cf470c3e TM |
4987 | return -EINVAL; |
4988 | data = kmalloc(sizeof(*data), GFP_NOFS); | |
4989 | if (!data) | |
4990 | return -ENOMEM; | |
4991 | data->lsp = lsp; | |
5ae67c4f | 4992 | data->server = server; |
cf470c3e TM |
4993 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
4994 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
4995 | data->args.lock_owner.s_dev = server->s_dev; | |
4996 | msg.rpc_argp = &data->args; | |
4997 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); | |
4998 | return 0; | |
d3c7b7cc TM |
4999 | } |
5000 | ||
aa1870af BF |
5001 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
5002 | ||
64c2ce8b AK |
5003 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
5004 | const void *buf, size_t buflen, | |
5005 | int flags, int type) | |
6b3b5496 | 5006 | { |
64c2ce8b AK |
5007 | if (strcmp(key, "") != 0) |
5008 | return -EINVAL; | |
4b580ee3 | 5009 | |
64c2ce8b | 5010 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5011 | } |
5012 | ||
64c2ce8b AK |
5013 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
5014 | void *buf, size_t buflen, int type) | |
6b3b5496 | 5015 | { |
64c2ce8b AK |
5016 | if (strcmp(key, "") != 0) |
5017 | return -EINVAL; | |
aa1870af | 5018 | |
64c2ce8b | 5019 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5020 | } |
5021 | ||
64c2ce8b AK |
5022 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
5023 | size_t list_len, const char *name, | |
5024 | size_t name_len, int type) | |
6b3b5496 | 5025 | { |
64c2ce8b | 5026 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 5027 | |
096455a2 BF |
5028 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
5029 | return 0; | |
64c2ce8b AK |
5030 | |
5031 | if (list && len <= list_len) | |
5032 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 5033 | return len; |
6b3b5496 BF |
5034 | } |
5035 | ||
533eb461 AA |
5036 | /* |
5037 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
5038 | */ | |
69aaaae1 TM |
5039 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
5040 | { | |
533eb461 AA |
5041 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
5042 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
5043 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 5044 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
5045 | return; |
5046 | ||
5047 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 5048 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
5049 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
5050 | fattr->nlink = 2; | |
5051 | } | |
5052 | ||
f05d147f BS |
5053 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5054 | const struct qstr *name, | |
5055 | struct nfs4_fs_locations *fs_locations, | |
5056 | struct page *page) | |
683b57b4 TM |
5057 | { |
5058 | struct nfs_server *server = NFS_SERVER(dir); | |
5059 | u32 bitmask[2] = { | |
361e624f | 5060 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
5061 | }; |
5062 | struct nfs4_fs_locations_arg args = { | |
5063 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 5064 | .name = name, |
683b57b4 TM |
5065 | .page = page, |
5066 | .bitmask = bitmask, | |
5067 | }; | |
22958463 BH |
5068 | struct nfs4_fs_locations_res res = { |
5069 | .fs_locations = fs_locations, | |
5070 | }; | |
683b57b4 TM |
5071 | struct rpc_message msg = { |
5072 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
5073 | .rpc_argp = &args, | |
22958463 | 5074 | .rpc_resp = &res, |
683b57b4 TM |
5075 | }; |
5076 | int status; | |
5077 | ||
3110ff80 | 5078 | dprintk("%s: start\n", __func__); |
533eb461 AA |
5079 | |
5080 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
5081 | * is not supported */ | |
5082 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
5083 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
5084 | else | |
5085 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
5086 | ||
c228fd3a | 5087 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 5088 | fs_locations->server = server; |
830b8e33 | 5089 | fs_locations->nlocations = 0; |
f05d147f | 5090 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 5091 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
5092 | return status; |
5093 | } | |
5094 | ||
f05d147f BS |
5095 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5096 | const struct qstr *name, | |
5097 | struct nfs4_fs_locations *fs_locations, | |
5098 | struct page *page) | |
db0a9593 BS |
5099 | { |
5100 | struct nfs4_exception exception = { }; | |
5101 | int err; | |
5102 | do { | |
5103 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
f05d147f | 5104 | _nfs4_proc_fs_locations(client, dir, name, fs_locations, page), |
db0a9593 BS |
5105 | &exception); |
5106 | } while (exception.retry); | |
5107 | return err; | |
5108 | } | |
5109 | ||
5a5ea0d4 BS |
5110 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) |
5111 | { | |
5112 | int status; | |
5113 | struct nfs4_secinfo_arg args = { | |
5114 | .dir_fh = NFS_FH(dir), | |
5115 | .name = name, | |
5116 | }; | |
5117 | struct nfs4_secinfo_res res = { | |
5118 | .flavors = flavors, | |
5119 | }; | |
5120 | struct rpc_message msg = { | |
5121 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
5122 | .rpc_argp = &args, | |
5123 | .rpc_resp = &res, | |
5124 | }; | |
5125 | ||
5126 | dprintk("NFS call secinfo %s\n", name->name); | |
5127 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); | |
5128 | dprintk("NFS reply secinfo: %d\n", status); | |
5129 | return status; | |
5130 | } | |
5131 | ||
72de53ec BS |
5132 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
5133 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
5134 | { |
5135 | struct nfs4_exception exception = { }; | |
5136 | int err; | |
5137 | do { | |
5138 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
5139 | _nfs4_proc_secinfo(dir, name, flavors), | |
5140 | &exception); | |
5141 | } while (exception.retry); | |
5142 | return err; | |
5143 | } | |
5144 | ||
557134a3 | 5145 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
5146 | /* |
5147 | * Check the exchange flags returned by the server for invalid flags, having | |
5148 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
5149 | * DS flags set. | |
5150 | */ | |
5151 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
5152 | { | |
5153 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
5154 | goto out_inval; | |
5155 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
5156 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
5157 | goto out_inval; | |
5158 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
5159 | goto out_inval; | |
5160 | return NFS_OK; | |
5161 | out_inval: | |
5162 | return -NFS4ERR_INVAL; | |
5163 | } | |
5164 | ||
78fe0f41 | 5165 | static bool |
79d4e1f0 CL |
5166 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
5167 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
5168 | { |
5169 | if (a->server_scope_sz == b->server_scope_sz && | |
5170 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
5171 | return true; | |
5172 | ||
5173 | return false; | |
5174 | } | |
5175 | ||
7c44f1ae WAA |
5176 | /* |
5177 | * nfs4_proc_bind_conn_to_session() | |
5178 | * | |
5179 | * The 4.1 client currently uses the same TCP connection for the | |
5180 | * fore and backchannel. | |
5181 | */ | |
2cf047c9 | 5182 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred) |
7c44f1ae WAA |
5183 | { |
5184 | int status; | |
5185 | struct nfs41_bind_conn_to_session_res res; | |
5186 | struct rpc_message msg = { | |
5187 | .rpc_proc = | |
5188 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
5189 | .rpc_argp = clp, | |
5190 | .rpc_resp = &res, | |
2cf047c9 | 5191 | .rpc_cred = cred, |
7c44f1ae WAA |
5192 | }; |
5193 | ||
5194 | dprintk("--> %s\n", __func__); | |
7c44f1ae WAA |
5195 | |
5196 | res.session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); | |
5197 | if (unlikely(res.session == NULL)) { | |
5198 | status = -ENOMEM; | |
5199 | goto out; | |
5200 | } | |
5201 | ||
5202 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5203 | if (status == 0) { | |
5204 | if (memcmp(res.session->sess_id.data, | |
5205 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { | |
5206 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
5207 | status = -EIO; | |
5208 | goto out_session; | |
5209 | } | |
5210 | if (res.dir != NFS4_CDFS4_BOTH) { | |
5211 | dprintk("NFS: %s: Unexpected direction from server\n", | |
5212 | __func__); | |
5213 | status = -EIO; | |
5214 | goto out_session; | |
5215 | } | |
5216 | if (res.use_conn_in_rdma_mode) { | |
5217 | dprintk("NFS: %s: Server returned RDMA mode = true\n", | |
5218 | __func__); | |
5219 | status = -EIO; | |
5220 | goto out_session; | |
5221 | } | |
5222 | } | |
5223 | out_session: | |
5224 | kfree(res.session); | |
5225 | out: | |
5226 | dprintk("<-- %s status= %d\n", __func__, status); | |
5227 | return status; | |
5228 | } | |
5229 | ||
99fe60d0 BH |
5230 | /* |
5231 | * nfs4_proc_exchange_id() | |
5232 | * | |
6bbb4ae8 CL |
5233 | * Returns zero, a negative errno, or a negative NFS4ERR status code. |
5234 | * | |
99fe60d0 BH |
5235 | * Since the clientid has expired, all compounds using sessions |
5236 | * associated with the stale clientid will be returning | |
5237 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
5238 | * be in some phase of session reset. | |
5239 | */ | |
4d643d1d | 5240 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
5241 | { |
5242 | nfs4_verifier verifier; | |
5243 | struct nfs41_exchange_id_args args = { | |
cd93710e | 5244 | .verifier = &verifier, |
99fe60d0 | 5245 | .client = clp, |
357f54d6 | 5246 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, |
99fe60d0 BH |
5247 | }; |
5248 | struct nfs41_exchange_id_res res = { | |
32b01310 | 5249 | 0 |
99fe60d0 BH |
5250 | }; |
5251 | int status; | |
5252 | struct rpc_message msg = { | |
5253 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
5254 | .rpc_argp = &args, | |
5255 | .rpc_resp = &res, | |
5256 | .rpc_cred = cred, | |
5257 | }; | |
99fe60d0 | 5258 | |
f092075d | 5259 | nfs4_init_boot_verifier(clp, &verifier); |
e984a55a CL |
5260 | args.id_len = nfs4_init_uniform_client_string(clp, args.id, |
5261 | sizeof(args.id)); | |
6bbb4ae8 CL |
5262 | dprintk("NFS call exchange_id auth=%s, '%.*s'\n", |
5263 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
5264 | args.id_len, args.id); | |
99fe60d0 | 5265 | |
acdeb69d | 5266 | res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
bbafffd2 | 5267 | GFP_NOFS); |
acdeb69d | 5268 | if (unlikely(res.server_owner == NULL)) { |
abe9a6d5 WAA |
5269 | status = -ENOMEM; |
5270 | goto out; | |
5271 | } | |
78fe0f41 | 5272 | |
79d4e1f0 | 5273 | res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 5274 | GFP_NOFS); |
177313f1 | 5275 | if (unlikely(res.server_scope == NULL)) { |
abe9a6d5 | 5276 | status = -ENOMEM; |
acdeb69d | 5277 | goto out_server_owner; |
abe9a6d5 | 5278 | } |
78fe0f41 | 5279 | |
bbafffd2 | 5280 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
177313f1 | 5281 | if (unlikely(res.impl_id == NULL)) { |
7d2ed9ac WAA |
5282 | status = -ENOMEM; |
5283 | goto out_server_scope; | |
5284 | } | |
5285 | ||
1bd714f2 | 5286 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
177313f1 | 5287 | if (status == 0) |
32b01310 | 5288 | status = nfs4_check_cl_exchange_flags(res.flags); |
78fe0f41 | 5289 | |
acdeb69d | 5290 | if (status == 0) { |
32b01310 TM |
5291 | clp->cl_clientid = res.clientid; |
5292 | clp->cl_exchange_flags = (res.flags & ~EXCHGID4_FLAG_CONFIRMED_R); | |
5293 | if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R)) | |
5294 | clp->cl_seqid = res.seqid; | |
5295 | ||
acdeb69d CL |
5296 | kfree(clp->cl_serverowner); |
5297 | clp->cl_serverowner = res.server_owner; | |
5298 | res.server_owner = NULL; | |
78fe0f41 | 5299 | |
7d2ed9ac | 5300 | /* use the most recent implementation id */ |
59155546 CL |
5301 | kfree(clp->cl_implid); |
5302 | clp->cl_implid = res.impl_id; | |
7d2ed9ac | 5303 | |
177313f1 | 5304 | if (clp->cl_serverscope != NULL && |
79d4e1f0 | 5305 | !nfs41_same_server_scope(clp->cl_serverscope, |
78fe0f41 WAA |
5306 | res.server_scope)) { |
5307 | dprintk("%s: server_scope mismatch detected\n", | |
5308 | __func__); | |
5309 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
79d4e1f0 CL |
5310 | kfree(clp->cl_serverscope); |
5311 | clp->cl_serverscope = NULL; | |
78fe0f41 WAA |
5312 | } |
5313 | ||
177313f1 | 5314 | if (clp->cl_serverscope == NULL) { |
79d4e1f0 | 5315 | clp->cl_serverscope = res.server_scope; |
abe9a6d5 WAA |
5316 | goto out; |
5317 | } | |
32b01310 TM |
5318 | } else |
5319 | kfree(res.impl_id); | |
7d2ed9ac | 5320 | |
acdeb69d CL |
5321 | out_server_owner: |
5322 | kfree(res.server_owner); | |
7d2ed9ac | 5323 | out_server_scope: |
abe9a6d5 WAA |
5324 | kfree(res.server_scope); |
5325 | out: | |
177313f1 | 5326 | if (clp->cl_implid != NULL) |
6bbb4ae8 | 5327 | dprintk("NFS reply exchange_id: Server Implementation ID: " |
7d2ed9ac | 5328 | "domain: %s, name: %s, date: %llu,%u\n", |
6bbb4ae8 | 5329 | clp->cl_implid->domain, clp->cl_implid->name, |
59155546 CL |
5330 | clp->cl_implid->date.seconds, |
5331 | clp->cl_implid->date.nseconds); | |
6bbb4ae8 | 5332 | dprintk("NFS reply exchange_id: %d\n", status); |
99fe60d0 BH |
5333 | return status; |
5334 | } | |
5335 | ||
66245539 TM |
5336 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
5337 | struct rpc_cred *cred) | |
5338 | { | |
5339 | struct rpc_message msg = { | |
5340 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
5341 | .rpc_argp = clp, | |
5342 | .rpc_cred = cred, | |
5343 | }; | |
5344 | int status; | |
5345 | ||
5346 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5347 | if (status) | |
02c67525 | 5348 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
5349 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
5350 | return status; | |
5351 | } | |
5352 | ||
5353 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
5354 | struct rpc_cred *cred) | |
5355 | { | |
5356 | unsigned int loop; | |
5357 | int ret; | |
5358 | ||
5359 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
5360 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
5361 | switch (ret) { | |
5362 | case -NFS4ERR_DELAY: | |
5363 | case -NFS4ERR_CLIENTID_BUSY: | |
5364 | ssleep(1); | |
5365 | break; | |
5366 | default: | |
5367 | return ret; | |
5368 | } | |
5369 | } | |
5370 | return 0; | |
5371 | } | |
5372 | ||
5373 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
5374 | { | |
5375 | struct rpc_cred *cred; | |
5376 | int ret = 0; | |
5377 | ||
5378 | if (clp->cl_mvops->minor_version < 1) | |
5379 | goto out; | |
5380 | if (clp->cl_exchange_flags == 0) | |
5381 | goto out; | |
05f4c350 CL |
5382 | if (clp->cl_preserve_clid) |
5383 | goto out; | |
66245539 TM |
5384 | cred = nfs4_get_exchange_id_cred(clp); |
5385 | ret = nfs4_proc_destroy_clientid(clp, cred); | |
5386 | if (cred) | |
5387 | put_rpccred(cred); | |
5388 | switch (ret) { | |
5389 | case 0: | |
5390 | case -NFS4ERR_STALE_CLIENTID: | |
5391 | clp->cl_exchange_flags = 0; | |
5392 | } | |
5393 | out: | |
5394 | return ret; | |
5395 | } | |
5396 | ||
2050f0cc AA |
5397 | struct nfs4_get_lease_time_data { |
5398 | struct nfs4_get_lease_time_args *args; | |
5399 | struct nfs4_get_lease_time_res *res; | |
5400 | struct nfs_client *clp; | |
5401 | }; | |
5402 | ||
5403 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
5404 | void *calldata) | |
5405 | { | |
2050f0cc AA |
5406 | struct nfs4_get_lease_time_data *data = |
5407 | (struct nfs4_get_lease_time_data *)calldata; | |
5408 | ||
5409 | dprintk("--> %s\n", __func__); | |
5410 | /* just setup sequence, do not trigger session recovery | |
5411 | since we're invoked within one */ | |
d9afbd1b TM |
5412 | nfs41_setup_sequence(data->clp->cl_session, |
5413 | &data->args->la_seq_args, | |
5414 | &data->res->lr_seq_res, | |
5415 | task); | |
2050f0cc AA |
5416 | dprintk("<-- %s\n", __func__); |
5417 | } | |
5418 | ||
5419 | /* | |
5420 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
5421 | * from sequence operation or clientid errors. | |
5422 | */ | |
5423 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
5424 | { | |
5425 | struct nfs4_get_lease_time_data *data = | |
5426 | (struct nfs4_get_lease_time_data *)calldata; | |
5427 | ||
5428 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5429 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
5430 | return; | |
2050f0cc AA |
5431 | switch (task->tk_status) { |
5432 | case -NFS4ERR_DELAY: | |
5433 | case -NFS4ERR_GRACE: | |
5434 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
5435 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
5436 | task->tk_status = 0; | |
a8a4ae3a AA |
5437 | /* fall through */ |
5438 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 5439 | rpc_restart_call_prepare(task); |
2050f0cc AA |
5440 | return; |
5441 | } | |
2050f0cc AA |
5442 | dprintk("<-- %s\n", __func__); |
5443 | } | |
5444 | ||
17280175 | 5445 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
5446 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
5447 | .rpc_call_done = nfs4_get_lease_time_done, | |
5448 | }; | |
5449 | ||
5450 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
5451 | { | |
5452 | struct rpc_task *task; | |
5453 | struct nfs4_get_lease_time_args args; | |
5454 | struct nfs4_get_lease_time_res res = { | |
5455 | .lr_fsinfo = fsinfo, | |
5456 | }; | |
5457 | struct nfs4_get_lease_time_data data = { | |
5458 | .args = &args, | |
5459 | .res = &res, | |
5460 | .clp = clp, | |
5461 | }; | |
5462 | struct rpc_message msg = { | |
5463 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
5464 | .rpc_argp = &args, | |
5465 | .rpc_resp = &res, | |
5466 | }; | |
5467 | struct rpc_task_setup task_setup = { | |
5468 | .rpc_client = clp->cl_rpcclient, | |
5469 | .rpc_message = &msg, | |
5470 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
5471 | .callback_data = &data, |
5472 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
5473 | }; |
5474 | int status; | |
5475 | ||
9d12b216 | 5476 | nfs41_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
8fe72bac | 5477 | nfs4_set_sequence_privileged(&args.la_seq_args); |
2050f0cc AA |
5478 | dprintk("--> %s\n", __func__); |
5479 | task = rpc_run_task(&task_setup); | |
5480 | ||
5481 | if (IS_ERR(task)) | |
5482 | status = PTR_ERR(task); | |
5483 | else { | |
5484 | status = task->tk_status; | |
5485 | rpc_put_task(task); | |
5486 | } | |
5487 | dprintk("<-- %s return %d\n", __func__, status); | |
5488 | ||
5489 | return status; | |
5490 | } | |
5491 | ||
fc931582 AA |
5492 | /* |
5493 | * Initialize the values to be used by the client in CREATE_SESSION | |
5494 | * If nfs4_init_session set the fore channel request and response sizes, | |
5495 | * use them. | |
5496 | * | |
5497 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
5498 | * always set csa_cachethis to FALSE because the current implementation | |
5499 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
5500 | */ | |
5501 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
5502 | { | |
5503 | struct nfs4_session *session = args->client->cl_session; | |
ae72ae67 TM |
5504 | unsigned int mxrqst_sz = session->fc_target_max_rqst_sz, |
5505 | mxresp_sz = session->fc_target_max_resp_sz; | |
fc931582 AA |
5506 | |
5507 | if (mxrqst_sz == 0) | |
5508 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
5509 | if (mxresp_sz == 0) | |
5510 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
5511 | /* Fore channel attributes */ | |
fc931582 AA |
5512 | args->fc_attrs.max_rqst_sz = mxrqst_sz; |
5513 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 | 5514 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 5515 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
5516 | |
5517 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 5518 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
5519 | __func__, |
5520 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 5521 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
5522 | |
5523 | /* Back channel attributes */ | |
fc931582 AA |
5524 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
5525 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
5526 | args->bc_attrs.max_resp_sz_cached = 0; | |
5527 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
5528 | args->bc_attrs.max_reqs = 1; | |
5529 | ||
5530 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
5531 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
5532 | __func__, | |
5533 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
5534 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
5535 | args->bc_attrs.max_reqs); | |
5536 | } | |
5537 | ||
43c2e885 | 5538 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 5539 | { |
43c2e885 BF |
5540 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
5541 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
5542 | ||
43c2e885 BF |
5543 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
5544 | return -EINVAL; | |
5545 | /* | |
5546 | * Our requested max_ops is the minimum we need; we're not | |
5547 | * prepared to break up compounds into smaller pieces than that. | |
5548 | * So, no point even trying to continue if the server won't | |
5549 | * cooperate: | |
5550 | */ | |
5551 | if (rcvd->max_ops < sent->max_ops) | |
5552 | return -EINVAL; | |
5553 | if (rcvd->max_reqs == 0) | |
5554 | return -EINVAL; | |
b4b9a0c1 VG |
5555 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
5556 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 5557 | return 0; |
8d35301d AA |
5558 | } |
5559 | ||
43c2e885 BF |
5560 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
5561 | { | |
5562 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
5563 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 5564 | |
43c2e885 BF |
5565 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
5566 | return -EINVAL; | |
5567 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
5568 | return -EINVAL; | |
5569 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
5570 | return -EINVAL; | |
5571 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 5572 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 5573 | return -EINVAL; |
b4b9a0c1 | 5574 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 BF |
5575 | return -EINVAL; |
5576 | return 0; | |
5577 | } | |
8d35301d | 5578 | |
8d35301d AA |
5579 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
5580 | struct nfs4_session *session) | |
5581 | { | |
43c2e885 | 5582 | int ret; |
8d35301d | 5583 | |
43c2e885 BF |
5584 | ret = nfs4_verify_fore_channel_attrs(args, session); |
5585 | if (ret) | |
5586 | return ret; | |
5587 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
5588 | } |
5589 | ||
848f5bda TM |
5590 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
5591 | struct rpc_cred *cred) | |
fc931582 AA |
5592 | { |
5593 | struct nfs4_session *session = clp->cl_session; | |
5594 | struct nfs41_create_session_args args = { | |
5595 | .client = clp, | |
5596 | .cb_program = NFS4_CALLBACK, | |
5597 | }; | |
5598 | struct nfs41_create_session_res res = { | |
5599 | .client = clp, | |
5600 | }; | |
5601 | struct rpc_message msg = { | |
5602 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
5603 | .rpc_argp = &args, | |
5604 | .rpc_resp = &res, | |
848f5bda | 5605 | .rpc_cred = cred, |
fc931582 AA |
5606 | }; |
5607 | int status; | |
5608 | ||
5609 | nfs4_init_channel_attrs(&args); | |
0f91421e | 5610 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 5611 | |
1bd714f2 | 5612 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
fc931582 | 5613 | |
43095d39 | 5614 | if (!status) { |
8d35301d AA |
5615 | /* Verify the session's negotiated channel_attrs values */ |
5616 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
5617 | /* Increment the clientid slot sequence id */ |
5618 | clp->cl_seqid++; | |
5619 | } | |
5620 | ||
5621 | return status; | |
5622 | } | |
5623 | ||
5624 | /* | |
5625 | * Issues a CREATE_SESSION operation to the server. | |
5626 | * It is the responsibility of the caller to verify the session is | |
5627 | * expired before calling this routine. | |
5628 | */ | |
848f5bda | 5629 | int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred) |
fc931582 AA |
5630 | { |
5631 | int status; | |
5632 | unsigned *ptr; | |
fc931582 AA |
5633 | struct nfs4_session *session = clp->cl_session; |
5634 | ||
5635 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
5636 | ||
848f5bda | 5637 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
5638 | if (status) |
5639 | goto out; | |
5640 | ||
aacd5537 AA |
5641 | /* Init or reset the session slot tables */ |
5642 | status = nfs4_setup_session_slot_tables(session); | |
5643 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
5644 | if (status) |
5645 | goto out; | |
5646 | ||
5647 | ptr = (unsigned *)&session->sess_id.data[0]; | |
5648 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
5649 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
5650 | out: |
5651 | dprintk("<-- %s\n", __func__); | |
5652 | return status; | |
5653 | } | |
5654 | ||
0f3e66c6 AA |
5655 | /* |
5656 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
5657 | * The caller must serialize access to this routine. | |
5658 | */ | |
848f5bda TM |
5659 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
5660 | struct rpc_cred *cred) | |
0f3e66c6 | 5661 | { |
848f5bda TM |
5662 | struct rpc_message msg = { |
5663 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
5664 | .rpc_argp = session, | |
5665 | .rpc_cred = cred, | |
5666 | }; | |
0f3e66c6 | 5667 | int status = 0; |
0f3e66c6 AA |
5668 | |
5669 | dprintk("--> nfs4_proc_destroy_session\n"); | |
5670 | ||
5671 | /* session is still being setup */ | |
5672 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
5673 | return status; | |
5674 | ||
1bd714f2 | 5675 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
0f3e66c6 AA |
5676 | |
5677 | if (status) | |
08106ac7 | 5678 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
5679 | "Session has been destroyed regardless...\n", status); |
5680 | ||
5681 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
5682 | return status; | |
5683 | } | |
5684 | ||
fc01cea9 AA |
5685 | /* |
5686 | * Renew the cl_session lease. | |
5687 | */ | |
d5f8d3fe TM |
5688 | struct nfs4_sequence_data { |
5689 | struct nfs_client *clp; | |
5690 | struct nfs4_sequence_args args; | |
5691 | struct nfs4_sequence_res res; | |
5692 | }; | |
5693 | ||
dc96aef9 AB |
5694 | static void nfs41_sequence_release(void *data) |
5695 | { | |
d5f8d3fe TM |
5696 | struct nfs4_sequence_data *calldata = data; |
5697 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 5698 | |
7135840f AB |
5699 | if (atomic_read(&clp->cl_count) > 1) |
5700 | nfs4_schedule_state_renewal(clp); | |
5701 | nfs_put_client(clp); | |
d5f8d3fe | 5702 | kfree(calldata); |
dc96aef9 AB |
5703 | } |
5704 | ||
aa5190d0 TM |
5705 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5706 | { | |
5707 | switch(task->tk_status) { | |
5708 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5709 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5710 | return -EAGAIN; | |
5711 | default: | |
0400a6b0 | 5712 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5713 | } |
5714 | return 0; | |
5715 | } | |
5716 | ||
dc96aef9 | 5717 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 5718 | { |
d5f8d3fe TM |
5719 | struct nfs4_sequence_data *calldata = data; |
5720 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 5721 | |
14516c3a TM |
5722 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
5723 | return; | |
fc01cea9 AA |
5724 | |
5725 | if (task->tk_status < 0) { | |
5726 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
5727 | if (atomic_read(&clp->cl_count) == 1) |
5728 | goto out; | |
fc01cea9 | 5729 | |
aa5190d0 TM |
5730 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
5731 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
5732 | return; |
5733 | } | |
5734 | } | |
fc01cea9 | 5735 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 5736 | out: |
fc01cea9 AA |
5737 | dprintk("<-- %s\n", __func__); |
5738 | } | |
5739 | ||
5740 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
5741 | { | |
d5f8d3fe TM |
5742 | struct nfs4_sequence_data *calldata = data; |
5743 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
5744 | struct nfs4_sequence_args *args; |
5745 | struct nfs4_sequence_res *res; | |
5746 | ||
fc01cea9 AA |
5747 | args = task->tk_msg.rpc_argp; |
5748 | res = task->tk_msg.rpc_resp; | |
5749 | ||
d9afbd1b | 5750 | nfs41_setup_sequence(clp->cl_session, args, res, task); |
fc01cea9 AA |
5751 | } |
5752 | ||
5753 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
5754 | .rpc_call_done = nfs41_sequence_call_done, | |
5755 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 5756 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
5757 | }; |
5758 | ||
8fe72bac TM |
5759 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, |
5760 | struct rpc_cred *cred, | |
5761 | bool is_privileged) | |
fc01cea9 | 5762 | { |
d5f8d3fe | 5763 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
5764 | struct rpc_message msg = { |
5765 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
5766 | .rpc_cred = cred, | |
5767 | }; | |
71ac6da9 TM |
5768 | struct rpc_task_setup task_setup_data = { |
5769 | .rpc_client = clp->cl_rpcclient, | |
5770 | .rpc_message = &msg, | |
8fe72bac | 5771 | .callback_ops = &nfs41_sequence_ops, |
71ac6da9 TM |
5772 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT, |
5773 | }; | |
fc01cea9 | 5774 | |
7135840f | 5775 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 5776 | return ERR_PTR(-EIO); |
dfb4f309 | 5777 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 5778 | if (calldata == NULL) { |
7135840f | 5779 | nfs_put_client(clp); |
71ac6da9 | 5780 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 5781 | } |
9d12b216 | 5782 | nfs41_init_sequence(&calldata->args, &calldata->res, 0); |
8fe72bac TM |
5783 | if (is_privileged) |
5784 | nfs4_set_sequence_privileged(&calldata->args); | |
d5f8d3fe TM |
5785 | msg.rpc_argp = &calldata->args; |
5786 | msg.rpc_resp = &calldata->res; | |
5787 | calldata->clp = clp; | |
71ac6da9 | 5788 | task_setup_data.callback_data = calldata; |
fc01cea9 | 5789 | |
71ac6da9 TM |
5790 | return rpc_run_task(&task_setup_data); |
5791 | } | |
5792 | ||
2f60ea6b | 5793 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
5794 | { |
5795 | struct rpc_task *task; | |
5796 | int ret = 0; | |
5797 | ||
2f60ea6b TM |
5798 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
5799 | return 0; | |
8fe72bac | 5800 | task = _nfs41_proc_sequence(clp, cred, false); |
71ac6da9 TM |
5801 | if (IS_ERR(task)) |
5802 | ret = PTR_ERR(task); | |
5803 | else | |
bf294b41 | 5804 | rpc_put_task_async(task); |
71ac6da9 TM |
5805 | dprintk("<-- %s status=%d\n", __func__, ret); |
5806 | return ret; | |
5807 | } | |
5808 | ||
5809 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5810 | { | |
5811 | struct rpc_task *task; | |
5812 | int ret; | |
5813 | ||
8fe72bac | 5814 | task = _nfs41_proc_sequence(clp, cred, true); |
71ac6da9 TM |
5815 | if (IS_ERR(task)) { |
5816 | ret = PTR_ERR(task); | |
5817 | goto out; | |
5818 | } | |
5819 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
5820 | if (!ret) { |
5821 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
5822 | ||
5823 | if (task->tk_status == 0) | |
5824 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 5825 | ret = task->tk_status; |
b4410c2f | 5826 | } |
71ac6da9 TM |
5827 | rpc_put_task(task); |
5828 | out: | |
5829 | dprintk("<-- %s status=%d\n", __func__, ret); | |
5830 | return ret; | |
fc01cea9 AA |
5831 | } |
5832 | ||
fce5c838 RL |
5833 | struct nfs4_reclaim_complete_data { |
5834 | struct nfs_client *clp; | |
5835 | struct nfs41_reclaim_complete_args arg; | |
5836 | struct nfs41_reclaim_complete_res res; | |
5837 | }; | |
5838 | ||
5839 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
5840 | { | |
5841 | struct nfs4_reclaim_complete_data *calldata = data; | |
5842 | ||
d9afbd1b TM |
5843 | nfs41_setup_sequence(calldata->clp->cl_session, |
5844 | &calldata->arg.seq_args, | |
5845 | &calldata->res.seq_res, | |
5846 | task); | |
fce5c838 RL |
5847 | } |
5848 | ||
aa5190d0 TM |
5849 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5850 | { | |
5851 | switch(task->tk_status) { | |
5852 | case 0: | |
5853 | case -NFS4ERR_COMPLETE_ALREADY: | |
5854 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
5855 | break; | |
5856 | case -NFS4ERR_DELAY: | |
aa5190d0 | 5857 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
5858 | /* fall through */ |
5859 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
5860 | return -EAGAIN; |
5861 | default: | |
0400a6b0 | 5862 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5863 | } |
5864 | return 0; | |
5865 | } | |
5866 | ||
fce5c838 RL |
5867 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
5868 | { | |
5869 | struct nfs4_reclaim_complete_data *calldata = data; | |
5870 | struct nfs_client *clp = calldata->clp; | |
5871 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
5872 | ||
5873 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5874 | if (!nfs41_sequence_done(task, res)) |
5875 | return; | |
fce5c838 | 5876 | |
aa5190d0 TM |
5877 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
5878 | rpc_restart_call_prepare(task); | |
5879 | return; | |
5880 | } | |
fce5c838 RL |
5881 | dprintk("<-- %s\n", __func__); |
5882 | } | |
5883 | ||
5884 | static void nfs4_free_reclaim_complete_data(void *data) | |
5885 | { | |
5886 | struct nfs4_reclaim_complete_data *calldata = data; | |
5887 | ||
5888 | kfree(calldata); | |
5889 | } | |
5890 | ||
5891 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
5892 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
5893 | .rpc_call_done = nfs4_reclaim_complete_done, | |
5894 | .rpc_release = nfs4_free_reclaim_complete_data, | |
5895 | }; | |
5896 | ||
5897 | /* | |
5898 | * Issue a global reclaim complete. | |
5899 | */ | |
5900 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
5901 | { | |
5902 | struct nfs4_reclaim_complete_data *calldata; | |
5903 | struct rpc_task *task; | |
5904 | struct rpc_message msg = { | |
5905 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
5906 | }; | |
5907 | struct rpc_task_setup task_setup_data = { | |
5908 | .rpc_client = clp->cl_rpcclient, | |
5909 | .rpc_message = &msg, | |
5910 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
5911 | .flags = RPC_TASK_ASYNC, | |
5912 | }; | |
5913 | int status = -ENOMEM; | |
5914 | ||
5915 | dprintk("--> %s\n", __func__); | |
8535b2be | 5916 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
5917 | if (calldata == NULL) |
5918 | goto out; | |
5919 | calldata->clp = clp; | |
5920 | calldata->arg.one_fs = 0; | |
fce5c838 | 5921 | |
9d12b216 | 5922 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
8fe72bac | 5923 | nfs4_set_sequence_privileged(&calldata->arg.seq_args); |
fce5c838 RL |
5924 | msg.rpc_argp = &calldata->arg; |
5925 | msg.rpc_resp = &calldata->res; | |
5926 | task_setup_data.callback_data = calldata; | |
5927 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 5928 | if (IS_ERR(task)) { |
fce5c838 | 5929 | status = PTR_ERR(task); |
acf82b85 DC |
5930 | goto out; |
5931 | } | |
c34c32ea AA |
5932 | status = nfs4_wait_for_completion_rpc_task(task); |
5933 | if (status == 0) | |
5934 | status = task->tk_status; | |
fce5c838 | 5935 | rpc_put_task(task); |
acf82b85 | 5936 | return 0; |
fce5c838 RL |
5937 | out: |
5938 | dprintk("<-- %s status=%d\n", __func__, status); | |
5939 | return status; | |
5940 | } | |
b1f69b75 AA |
5941 | |
5942 | static void | |
5943 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
5944 | { | |
5945 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 5946 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
6ba7db34 | 5947 | struct nfs4_session *session = nfs4_get_session(server); |
b1f69b75 AA |
5948 | |
5949 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
5950 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
5951 | * right now covering the LAYOUTGET we are about to send. | |
5952 | * However, that is not so catastrophic, and there seems | |
5953 | * to be no way to prevent it completely. | |
5954 | */ | |
6ba7db34 | 5955 | if (nfs41_setup_sequence(session, &lgp->args.seq_args, |
9d12b216 | 5956 | &lgp->res.seq_res, task)) |
b1f69b75 | 5957 | return; |
cf7d63f1 FI |
5958 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
5959 | NFS_I(lgp->args.inode)->layout, | |
5960 | lgp->args.ctx->state)) { | |
5961 | rpc_exit(task, NFS4_OK); | |
cf7d63f1 | 5962 | } |
b1f69b75 AA |
5963 | } |
5964 | ||
5965 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
5966 | { | |
5967 | struct nfs4_layoutget *lgp = calldata; | |
ee314c2a TM |
5968 | struct inode *inode = lgp->args.inode; |
5969 | struct nfs_server *server = NFS_SERVER(inode); | |
5970 | struct pnfs_layout_hdr *lo; | |
5971 | struct nfs4_state *state = NULL; | |
b1f69b75 AA |
5972 | |
5973 | dprintk("--> %s\n", __func__); | |
5974 | ||
6ba7db34 | 5975 | if (!nfs41_sequence_done(task, &lgp->res.seq_res)) |
ee314c2a | 5976 | goto out; |
b1f69b75 AA |
5977 | |
5978 | switch (task->tk_status) { | |
5979 | case 0: | |
ee314c2a | 5980 | goto out; |
b1f69b75 AA |
5981 | case -NFS4ERR_LAYOUTTRYLATER: |
5982 | case -NFS4ERR_RECALLCONFLICT: | |
5983 | task->tk_status = -NFS4ERR_DELAY; | |
ee314c2a TM |
5984 | break; |
5985 | case -NFS4ERR_EXPIRED: | |
5986 | case -NFS4ERR_BAD_STATEID: | |
5987 | spin_lock(&inode->i_lock); | |
5988 | lo = NFS_I(inode)->layout; | |
5989 | if (!lo || list_empty(&lo->plh_segs)) { | |
5990 | spin_unlock(&inode->i_lock); | |
5991 | /* If the open stateid was bad, then recover it. */ | |
5992 | state = lgp->args.ctx->state; | |
5993 | } else { | |
5994 | LIST_HEAD(head); | |
5995 | ||
5996 | pnfs_mark_matching_lsegs_invalid(lo, &head, NULL); | |
5997 | spin_unlock(&inode->i_lock); | |
5998 | /* Mark the bad layout state as invalid, then | |
5999 | * retry using the open stateid. */ | |
6000 | pnfs_free_lseg_list(&head); | |
b1f69b75 AA |
6001 | } |
6002 | } | |
ee314c2a TM |
6003 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
6004 | rpc_restart_call_prepare(task); | |
6005 | out: | |
b1f69b75 AA |
6006 | dprintk("<-- %s\n", __func__); |
6007 | } | |
6008 | ||
8554116e IK |
6009 | static size_t max_response_pages(struct nfs_server *server) |
6010 | { | |
6011 | u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; | |
6012 | return nfs_page_array_len(0, max_resp_sz); | |
6013 | } | |
6014 | ||
6015 | static void nfs4_free_pages(struct page **pages, size_t size) | |
6016 | { | |
6017 | int i; | |
6018 | ||
6019 | if (!pages) | |
6020 | return; | |
6021 | ||
6022 | for (i = 0; i < size; i++) { | |
6023 | if (!pages[i]) | |
6024 | break; | |
6025 | __free_page(pages[i]); | |
6026 | } | |
6027 | kfree(pages); | |
6028 | } | |
6029 | ||
6030 | static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags) | |
6031 | { | |
6032 | struct page **pages; | |
6033 | int i; | |
6034 | ||
6035 | pages = kcalloc(size, sizeof(struct page *), gfp_flags); | |
6036 | if (!pages) { | |
6037 | dprintk("%s: can't alloc array of %zu pages\n", __func__, size); | |
6038 | return NULL; | |
6039 | } | |
6040 | ||
6041 | for (i = 0; i < size; i++) { | |
6042 | pages[i] = alloc_page(gfp_flags); | |
6043 | if (!pages[i]) { | |
6044 | dprintk("%s: failed to allocate page\n", __func__); | |
6045 | nfs4_free_pages(pages, size); | |
6046 | return NULL; | |
6047 | } | |
6048 | } | |
6049 | ||
6050 | return pages; | |
6051 | } | |
6052 | ||
b1f69b75 AA |
6053 | static void nfs4_layoutget_release(void *calldata) |
6054 | { | |
6055 | struct nfs4_layoutget *lgp = calldata; | |
8554116e IK |
6056 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
6057 | size_t max_pages = max_response_pages(server); | |
b1f69b75 AA |
6058 | |
6059 | dprintk("--> %s\n", __func__); | |
8554116e | 6060 | nfs4_free_pages(lgp->args.layout.pages, max_pages); |
b1f69b75 AA |
6061 | put_nfs_open_context(lgp->args.ctx); |
6062 | kfree(calldata); | |
6063 | dprintk("<-- %s\n", __func__); | |
6064 | } | |
6065 | ||
6066 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
6067 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
6068 | .rpc_call_done = nfs4_layoutget_done, | |
6069 | .rpc_release = nfs4_layoutget_release, | |
6070 | }; | |
6071 | ||
a0b0a6e3 TM |
6072 | struct pnfs_layout_segment * |
6073 | nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags) | |
b1f69b75 AA |
6074 | { |
6075 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
8554116e | 6076 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
6077 | struct rpc_task *task; |
6078 | struct rpc_message msg = { | |
6079 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
6080 | .rpc_argp = &lgp->args, | |
6081 | .rpc_resp = &lgp->res, | |
6082 | }; | |
6083 | struct rpc_task_setup task_setup_data = { | |
6084 | .rpc_client = server->client, | |
6085 | .rpc_message = &msg, | |
6086 | .callback_ops = &nfs4_layoutget_call_ops, | |
6087 | .callback_data = lgp, | |
6088 | .flags = RPC_TASK_ASYNC, | |
6089 | }; | |
a0b0a6e3 | 6090 | struct pnfs_layout_segment *lseg = NULL; |
b1f69b75 AA |
6091 | int status = 0; |
6092 | ||
6093 | dprintk("--> %s\n", __func__); | |
6094 | ||
8554116e IK |
6095 | lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags); |
6096 | if (!lgp->args.layout.pages) { | |
6097 | nfs4_layoutget_release(lgp); | |
a0b0a6e3 | 6098 | return ERR_PTR(-ENOMEM); |
8554116e IK |
6099 | } |
6100 | lgp->args.layout.pglen = max_pages * PAGE_SIZE; | |
6101 | ||
35124a09 | 6102 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 6103 | lgp->res.seq_res.sr_slot = NULL; |
9d12b216 | 6104 | nfs41_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
b1f69b75 AA |
6105 | task = rpc_run_task(&task_setup_data); |
6106 | if (IS_ERR(task)) | |
a0b0a6e3 | 6107 | return ERR_CAST(task); |
b1f69b75 | 6108 | status = nfs4_wait_for_completion_rpc_task(task); |
c31663d4 FI |
6109 | if (status == 0) |
6110 | status = task->tk_status; | |
6111 | if (status == 0) | |
a0b0a6e3 | 6112 | lseg = pnfs_layout_process(lgp); |
b1f69b75 AA |
6113 | rpc_put_task(task); |
6114 | dprintk("<-- %s status=%d\n", __func__, status); | |
a0b0a6e3 TM |
6115 | if (status) |
6116 | return ERR_PTR(status); | |
6117 | return lseg; | |
b1f69b75 AA |
6118 | } |
6119 | ||
cbe82603 BH |
6120 | static void |
6121 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
6122 | { | |
6123 | struct nfs4_layoutreturn *lrp = calldata; | |
6124 | ||
6125 | dprintk("--> %s\n", __func__); | |
d9afbd1b TM |
6126 | nfs41_setup_sequence(lrp->clp->cl_session, |
6127 | &lrp->args.seq_args, | |
6128 | &lrp->res.seq_res, | |
6129 | task); | |
cbe82603 BH |
6130 | } |
6131 | ||
6132 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
6133 | { | |
6134 | struct nfs4_layoutreturn *lrp = calldata; | |
6135 | struct nfs_server *server; | |
6136 | ||
6137 | dprintk("--> %s\n", __func__); | |
6138 | ||
6ba7db34 | 6139 | if (!nfs41_sequence_done(task, &lrp->res.seq_res)) |
cbe82603 BH |
6140 | return; |
6141 | ||
6142 | server = NFS_SERVER(lrp->args.inode); | |
6143 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 6144 | rpc_restart_call_prepare(task); |
cbe82603 BH |
6145 | return; |
6146 | } | |
cbe82603 BH |
6147 | dprintk("<-- %s\n", __func__); |
6148 | } | |
6149 | ||
6150 | static void nfs4_layoutreturn_release(void *calldata) | |
6151 | { | |
6152 | struct nfs4_layoutreturn *lrp = calldata; | |
849b286f | 6153 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
6154 | |
6155 | dprintk("--> %s\n", __func__); | |
849b286f TM |
6156 | spin_lock(&lo->plh_inode->i_lock); |
6157 | if (lrp->res.lrs_present) | |
6158 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); | |
6159 | lo->plh_block_lgets--; | |
6160 | spin_unlock(&lo->plh_inode->i_lock); | |
70c3bd2b | 6161 | pnfs_put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
6162 | kfree(calldata); |
6163 | dprintk("<-- %s\n", __func__); | |
6164 | } | |
6165 | ||
6166 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
6167 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
6168 | .rpc_call_done = nfs4_layoutreturn_done, | |
6169 | .rpc_release = nfs4_layoutreturn_release, | |
6170 | }; | |
6171 | ||
6172 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
6173 | { | |
6174 | struct rpc_task *task; | |
6175 | struct rpc_message msg = { | |
6176 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
6177 | .rpc_argp = &lrp->args, | |
6178 | .rpc_resp = &lrp->res, | |
6179 | }; | |
6180 | struct rpc_task_setup task_setup_data = { | |
6181 | .rpc_client = lrp->clp->cl_rpcclient, | |
6182 | .rpc_message = &msg, | |
6183 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
6184 | .callback_data = lrp, | |
6185 | }; | |
6186 | int status; | |
6187 | ||
6188 | dprintk("--> %s\n", __func__); | |
9d12b216 | 6189 | nfs41_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
6190 | task = rpc_run_task(&task_setup_data); |
6191 | if (IS_ERR(task)) | |
6192 | return PTR_ERR(task); | |
6193 | status = task->tk_status; | |
6194 | dprintk("<-- %s status=%d\n", __func__, status); | |
6195 | rpc_put_task(task); | |
6196 | return status; | |
6197 | } | |
6198 | ||
7f11d8d3 AA |
6199 | /* |
6200 | * Retrieve the list of Data Server devices from the MDS. | |
6201 | */ | |
6202 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
6203 | const struct nfs_fh *fh, | |
6204 | struct pnfs_devicelist *devlist) | |
6205 | { | |
6206 | struct nfs4_getdevicelist_args args = { | |
6207 | .fh = fh, | |
6208 | .layoutclass = server->pnfs_curr_ld->id, | |
6209 | }; | |
6210 | struct nfs4_getdevicelist_res res = { | |
6211 | .devlist = devlist, | |
6212 | }; | |
6213 | struct rpc_message msg = { | |
6214 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
6215 | .rpc_argp = &args, | |
6216 | .rpc_resp = &res, | |
6217 | }; | |
6218 | int status; | |
6219 | ||
6220 | dprintk("--> %s\n", __func__); | |
6221 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
6222 | &res.seq_res, 0); | |
6223 | dprintk("<-- %s status=%d\n", __func__, status); | |
6224 | return status; | |
6225 | } | |
6226 | ||
6227 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
6228 | const struct nfs_fh *fh, | |
6229 | struct pnfs_devicelist *devlist) | |
6230 | { | |
6231 | struct nfs4_exception exception = { }; | |
6232 | int err; | |
6233 | ||
6234 | do { | |
6235 | err = nfs4_handle_exception(server, | |
6236 | _nfs4_getdevicelist(server, fh, devlist), | |
6237 | &exception); | |
6238 | } while (exception.retry); | |
6239 | ||
6240 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
6241 | err, devlist->num_devs); | |
6242 | ||
6243 | return err; | |
6244 | } | |
6245 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
6246 | ||
b1f69b75 AA |
6247 | static int |
6248 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6249 | { | |
6250 | struct nfs4_getdeviceinfo_args args = { | |
6251 | .pdev = pdev, | |
6252 | }; | |
6253 | struct nfs4_getdeviceinfo_res res = { | |
6254 | .pdev = pdev, | |
6255 | }; | |
6256 | struct rpc_message msg = { | |
6257 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
6258 | .rpc_argp = &args, | |
6259 | .rpc_resp = &res, | |
6260 | }; | |
6261 | int status; | |
6262 | ||
6263 | dprintk("--> %s\n", __func__); | |
7c513058 | 6264 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
6265 | dprintk("<-- %s status=%d\n", __func__, status); |
6266 | ||
6267 | return status; | |
6268 | } | |
6269 | ||
6270 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6271 | { | |
6272 | struct nfs4_exception exception = { }; | |
6273 | int err; | |
6274 | ||
6275 | do { | |
6276 | err = nfs4_handle_exception(server, | |
6277 | _nfs4_proc_getdeviceinfo(server, pdev), | |
6278 | &exception); | |
6279 | } while (exception.retry); | |
6280 | return err; | |
6281 | } | |
6282 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
6283 | ||
863a3c6c AA |
6284 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
6285 | { | |
6286 | struct nfs4_layoutcommit_data *data = calldata; | |
6287 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6ba7db34 | 6288 | struct nfs4_session *session = nfs4_get_session(server); |
863a3c6c | 6289 | |
d9afbd1b TM |
6290 | nfs41_setup_sequence(session, |
6291 | &data->args.seq_args, | |
6292 | &data->res.seq_res, | |
6293 | task); | |
863a3c6c AA |
6294 | } |
6295 | ||
6296 | static void | |
6297 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
6298 | { | |
6299 | struct nfs4_layoutcommit_data *data = calldata; | |
6300 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6301 | ||
6ba7db34 | 6302 | if (!nfs41_sequence_done(task, &data->res.seq_res)) |
863a3c6c AA |
6303 | return; |
6304 | ||
6305 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
6306 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
6307 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
6308 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
6309 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 6310 | task->tk_status = 0; |
e59d27e0 TM |
6311 | break; |
6312 | case 0: | |
863a3c6c AA |
6313 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
6314 | data->res.fattr); | |
e59d27e0 TM |
6315 | break; |
6316 | default: | |
6317 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
6318 | rpc_restart_call_prepare(task); | |
6319 | return; | |
6320 | } | |
6321 | } | |
863a3c6c AA |
6322 | } |
6323 | ||
6324 | static void nfs4_layoutcommit_release(void *calldata) | |
6325 | { | |
6326 | struct nfs4_layoutcommit_data *data = calldata; | |
a9bae566 | 6327 | struct pnfs_layout_segment *lseg, *tmp; |
92407e75 | 6328 | unsigned long *bitlock = &NFS_I(data->args.inode)->flags; |
863a3c6c | 6329 | |
db29c089 | 6330 | pnfs_cleanup_layoutcommit(data); |
863a3c6c | 6331 | /* Matched by references in pnfs_set_layoutcommit */ |
a9bae566 PT |
6332 | list_for_each_entry_safe(lseg, tmp, &data->lseg_list, pls_lc_list) { |
6333 | list_del_init(&lseg->pls_lc_list); | |
6334 | if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT, | |
6335 | &lseg->pls_flags)) | |
9369a431 | 6336 | pnfs_put_lseg(lseg); |
a9bae566 | 6337 | } |
92407e75 PT |
6338 | |
6339 | clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING, bitlock); | |
6340 | smp_mb__after_clear_bit(); | |
6341 | wake_up_bit(bitlock, NFS_INO_LAYOUTCOMMITTING); | |
6342 | ||
863a3c6c AA |
6343 | put_rpccred(data->cred); |
6344 | kfree(data); | |
6345 | } | |
6346 | ||
6347 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
6348 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
6349 | .rpc_call_done = nfs4_layoutcommit_done, | |
6350 | .rpc_release = nfs4_layoutcommit_release, | |
6351 | }; | |
6352 | ||
6353 | int | |
ef311537 | 6354 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
6355 | { |
6356 | struct rpc_message msg = { | |
6357 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
6358 | .rpc_argp = &data->args, | |
6359 | .rpc_resp = &data->res, | |
6360 | .rpc_cred = data->cred, | |
6361 | }; | |
6362 | struct rpc_task_setup task_setup_data = { | |
6363 | .task = &data->task, | |
6364 | .rpc_client = NFS_CLIENT(data->args.inode), | |
6365 | .rpc_message = &msg, | |
6366 | .callback_ops = &nfs4_layoutcommit_ops, | |
6367 | .callback_data = data, | |
6368 | .flags = RPC_TASK_ASYNC, | |
6369 | }; | |
6370 | struct rpc_task *task; | |
6371 | int status = 0; | |
6372 | ||
6373 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
6374 | "lbw: %llu inode %lu\n", | |
6375 | data->task.tk_pid, sync, | |
6376 | data->args.lastbytewritten, | |
6377 | data->args.inode->i_ino); | |
6378 | ||
9d12b216 | 6379 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
6380 | task = rpc_run_task(&task_setup_data); |
6381 | if (IS_ERR(task)) | |
6382 | return PTR_ERR(task); | |
ef311537 | 6383 | if (sync == false) |
863a3c6c AA |
6384 | goto out; |
6385 | status = nfs4_wait_for_completion_rpc_task(task); | |
6386 | if (status != 0) | |
6387 | goto out; | |
6388 | status = task->tk_status; | |
6389 | out: | |
6390 | dprintk("%s: status %d\n", __func__, status); | |
6391 | rpc_put_task(task); | |
6392 | return status; | |
6393 | } | |
fca78d6d BS |
6394 | |
6395 | static int | |
6396 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6397 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6398 | { | |
6399 | struct nfs41_secinfo_no_name_args args = { | |
6400 | .style = SECINFO_STYLE_CURRENT_FH, | |
6401 | }; | |
6402 | struct nfs4_secinfo_res res = { | |
6403 | .flavors = flavors, | |
6404 | }; | |
6405 | struct rpc_message msg = { | |
6406 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
6407 | .rpc_argp = &args, | |
6408 | .rpc_resp = &res, | |
6409 | }; | |
6410 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); | |
6411 | } | |
6412 | ||
6413 | static int | |
6414 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6415 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6416 | { | |
6417 | struct nfs4_exception exception = { }; | |
6418 | int err; | |
6419 | do { | |
6420 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6421 | switch (err) { | |
6422 | case 0: | |
6423 | case -NFS4ERR_WRONGSEC: | |
6424 | case -NFS4ERR_NOTSUPP: | |
05e9cfb4 | 6425 | goto out; |
fca78d6d BS |
6426 | default: |
6427 | err = nfs4_handle_exception(server, err, &exception); | |
6428 | } | |
6429 | } while (exception.retry); | |
05e9cfb4 | 6430 | out: |
fca78d6d BS |
6431 | return err; |
6432 | } | |
6433 | ||
6434 | static int | |
6435 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
6436 | struct nfs_fsinfo *info) | |
6437 | { | |
6438 | int err; | |
6439 | struct page *page; | |
6440 | rpc_authflavor_t flavor; | |
6441 | struct nfs4_secinfo_flavors *flavors; | |
6442 | ||
6443 | page = alloc_page(GFP_KERNEL); | |
6444 | if (!page) { | |
6445 | err = -ENOMEM; | |
6446 | goto out; | |
6447 | } | |
6448 | ||
6449 | flavors = page_address(page); | |
6450 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6451 | ||
6452 | /* | |
6453 | * Fall back on "guess and check" method if | |
6454 | * the server doesn't support SECINFO_NO_NAME | |
6455 | */ | |
6456 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
6457 | err = nfs4_find_root_sec(server, fhandle, info); | |
6458 | goto out_freepage; | |
6459 | } | |
6460 | if (err) | |
6461 | goto out_freepage; | |
6462 | ||
6463 | flavor = nfs_find_best_sec(flavors); | |
6464 | if (err == 0) | |
6465 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
6466 | ||
6467 | out_freepage: | |
6468 | put_page(page); | |
6469 | if (err == -EACCES) | |
6470 | return -EPERM; | |
6471 | out: | |
6472 | return err; | |
6473 | } | |
1cab0652 BS |
6474 | |
6475 | static int _nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) | |
7d974794 BS |
6476 | { |
6477 | int status; | |
6478 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 6479 | .stateid = stateid, |
7d974794 BS |
6480 | }; |
6481 | struct nfs41_test_stateid_res res; | |
6482 | struct rpc_message msg = { | |
6483 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
6484 | .rpc_argp = &args, | |
6485 | .rpc_resp = &res, | |
6486 | }; | |
1cab0652 | 6487 | |
38527b15 | 6488 | dprintk("NFS call test_stateid %p\n", stateid); |
9d12b216 | 6489 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
8fe72bac TM |
6490 | nfs4_set_sequence_privileged(&args.seq_args); |
6491 | status = nfs4_call_sync_sequence(server->client, server, &msg, | |
6492 | &args.seq_args, &res.seq_res); | |
38527b15 CL |
6493 | if (status != NFS_OK) { |
6494 | dprintk("NFS reply test_stateid: failed, %d\n", status); | |
377e507d | 6495 | return status; |
38527b15 CL |
6496 | } |
6497 | dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status); | |
377e507d | 6498 | return -res.status; |
7d974794 BS |
6499 | } |
6500 | ||
38527b15 CL |
6501 | /** |
6502 | * nfs41_test_stateid - perform a TEST_STATEID operation | |
6503 | * | |
6504 | * @server: server / transport on which to perform the operation | |
6505 | * @stateid: state ID to test | |
6506 | * | |
6507 | * Returns NFS_OK if the server recognizes that "stateid" is valid. | |
6508 | * Otherwise a negative NFS4ERR value is returned if the operation | |
6509 | * failed or the state ID is not currently valid. | |
6510 | */ | |
1cab0652 | 6511 | static int nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
7d974794 BS |
6512 | { |
6513 | struct nfs4_exception exception = { }; | |
6514 | int err; | |
6515 | do { | |
377e507d CL |
6516 | err = _nfs41_test_stateid(server, stateid); |
6517 | if (err != -NFS4ERR_DELAY) | |
6518 | break; | |
6519 | nfs4_handle_exception(server, err, &exception); | |
7d974794 BS |
6520 | } while (exception.retry); |
6521 | return err; | |
6522 | } | |
9aeda35f | 6523 | |
1cab0652 | 6524 | static int _nfs4_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f | 6525 | { |
9aeda35f | 6526 | struct nfs41_free_stateid_args args = { |
1cab0652 | 6527 | .stateid = stateid, |
9aeda35f BS |
6528 | }; |
6529 | struct nfs41_free_stateid_res res; | |
6530 | struct rpc_message msg = { | |
6531 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
6532 | .rpc_argp = &args, | |
6533 | .rpc_resp = &res, | |
6534 | }; | |
38527b15 | 6535 | int status; |
9aeda35f | 6536 | |
38527b15 | 6537 | dprintk("NFS call free_stateid %p\n", stateid); |
9d12b216 | 6538 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
8fe72bac | 6539 | nfs4_set_sequence_privileged(&args.seq_args); |
38527b15 | 6540 | status = nfs4_call_sync_sequence(server->client, server, &msg, |
8fe72bac | 6541 | &args.seq_args, &res.seq_res); |
38527b15 CL |
6542 | dprintk("NFS reply free_stateid: %d\n", status); |
6543 | return status; | |
9aeda35f BS |
6544 | } |
6545 | ||
38527b15 CL |
6546 | /** |
6547 | * nfs41_free_stateid - perform a FREE_STATEID operation | |
6548 | * | |
6549 | * @server: server / transport on which to perform the operation | |
6550 | * @stateid: state ID to release | |
6551 | * | |
6552 | * Returns NFS_OK if the server freed "stateid". Otherwise a | |
6553 | * negative NFS4ERR value is returned. | |
6554 | */ | |
1cab0652 | 6555 | static int nfs41_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f BS |
6556 | { |
6557 | struct nfs4_exception exception = { }; | |
6558 | int err; | |
6559 | do { | |
377e507d CL |
6560 | err = _nfs4_free_stateid(server, stateid); |
6561 | if (err != -NFS4ERR_DELAY) | |
6562 | break; | |
6563 | nfs4_handle_exception(server, err, &exception); | |
9aeda35f BS |
6564 | } while (exception.retry); |
6565 | return err; | |
6566 | } | |
36281caa TM |
6567 | |
6568 | static bool nfs41_match_stateid(const nfs4_stateid *s1, | |
6569 | const nfs4_stateid *s2) | |
6570 | { | |
2d2f24ad | 6571 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
6572 | return false; |
6573 | ||
2d2f24ad | 6574 | if (s1->seqid == s2->seqid) |
36281caa | 6575 | return true; |
2d2f24ad | 6576 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
6577 | return true; |
6578 | ||
6579 | return false; | |
6580 | } | |
6581 | ||
557134a3 AA |
6582 | #endif /* CONFIG_NFS_V4_1 */ |
6583 | ||
36281caa TM |
6584 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
6585 | const nfs4_stateid *s2) | |
6586 | { | |
f597c537 | 6587 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
6588 | } |
6589 | ||
6590 | ||
17280175 | 6591 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 6592 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 6593 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
6594 | .recover_open = nfs4_open_reclaim, |
6595 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 6596 | .establish_clid = nfs4_init_clientid, |
90a16617 | 6597 | .get_clid_cred = nfs4_get_setclientid_cred, |
05f4c350 | 6598 | .detect_trunking = nfs40_discover_server_trunking, |
1da177e4 LT |
6599 | }; |
6600 | ||
591d71cb | 6601 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 6602 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
6603 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
6604 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
6605 | .recover_open = nfs4_open_reclaim, | |
6606 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 6607 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6608 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 6609 | .reclaim_complete = nfs41_proc_reclaim_complete, |
05f4c350 | 6610 | .detect_trunking = nfs41_discover_server_trunking, |
591d71cb AA |
6611 | }; |
6612 | #endif /* CONFIG_NFS_V4_1 */ | |
6613 | ||
17280175 | 6614 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
6615 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
6616 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
6617 | .recover_open = nfs4_open_expired, | |
6618 | .recover_lock = nfs4_lock_expired, | |
6619 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 6620 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
6621 | }; |
6622 | ||
6623 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 6624 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 6625 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 6626 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
6627 | .recover_open = nfs41_open_expired, |
6628 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 6629 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6630 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 6631 | }; |
591d71cb | 6632 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 6633 | |
17280175 | 6634 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 6635 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 6636 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 6637 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
6638 | }; |
6639 | ||
6640 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 6641 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 6642 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 6643 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 6644 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
6645 | }; |
6646 | #endif | |
6647 | ||
97dc1359 TM |
6648 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
6649 | .minor_version = 0, | |
6650 | .call_sync = _nfs4_call_sync, | |
36281caa | 6651 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 6652 | .find_root_sec = nfs4_find_root_sec, |
c48f4f35 TM |
6653 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
6654 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
6655 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
6656 | }; |
6657 | ||
6658 | #if defined(CONFIG_NFS_V4_1) | |
6659 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
6660 | .minor_version = 1, | |
104287cd | 6661 | .call_sync = nfs4_call_sync_sequence, |
36281caa | 6662 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 6663 | .find_root_sec = nfs41_find_root_sec, |
c48f4f35 TM |
6664 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
6665 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
6666 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
6667 | }; |
6668 | #endif | |
6669 | ||
97dc1359 TM |
6670 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
6671 | [0] = &nfs_v4_0_minor_ops, | |
6672 | #if defined(CONFIG_NFS_V4_1) | |
6673 | [1] = &nfs_v4_1_minor_ops, | |
6674 | #endif | |
6675 | }; | |
6676 | ||
73a79706 BS |
6677 | const struct inode_operations nfs4_dir_inode_operations = { |
6678 | .create = nfs_create, | |
6679 | .lookup = nfs_lookup, | |
6680 | .atomic_open = nfs_atomic_open, | |
6681 | .link = nfs_link, | |
6682 | .unlink = nfs_unlink, | |
6683 | .symlink = nfs_symlink, | |
6684 | .mkdir = nfs_mkdir, | |
6685 | .rmdir = nfs_rmdir, | |
6686 | .mknod = nfs_mknod, | |
6687 | .rename = nfs_rename, | |
6688 | .permission = nfs_permission, | |
6689 | .getattr = nfs_getattr, | |
6690 | .setattr = nfs_setattr, | |
6691 | .getxattr = generic_getxattr, | |
6692 | .setxattr = generic_setxattr, | |
6693 | .listxattr = generic_listxattr, | |
6694 | .removexattr = generic_removexattr, | |
6695 | }; | |
6696 | ||
92e1d5be | 6697 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
6698 | .permission = nfs_permission, |
6699 | .getattr = nfs_getattr, | |
6700 | .setattr = nfs_setattr, | |
64c2ce8b AK |
6701 | .getxattr = generic_getxattr, |
6702 | .setxattr = generic_setxattr, | |
6703 | .listxattr = generic_listxattr, | |
6704 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
6705 | }; |
6706 | ||
509de811 | 6707 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
6708 | .version = 4, /* protocol version */ |
6709 | .dentry_ops = &nfs4_dentry_operations, | |
6710 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 6711 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 6712 | .file_ops = &nfs4_file_operations, |
1da177e4 | 6713 | .getroot = nfs4_proc_get_root, |
281cad46 | 6714 | .submount = nfs4_submount, |
ff9099f2 | 6715 | .try_mount = nfs4_try_mount, |
1da177e4 LT |
6716 | .getattr = nfs4_proc_getattr, |
6717 | .setattr = nfs4_proc_setattr, | |
6718 | .lookup = nfs4_proc_lookup, | |
6719 | .access = nfs4_proc_access, | |
6720 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
6721 | .create = nfs4_proc_create, |
6722 | .remove = nfs4_proc_remove, | |
6723 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 6724 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 LT |
6725 | .unlink_done = nfs4_proc_unlink_done, |
6726 | .rename = nfs4_proc_rename, | |
d3d4152a | 6727 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 6728 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 6729 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
6730 | .link = nfs4_proc_link, |
6731 | .symlink = nfs4_proc_symlink, | |
6732 | .mkdir = nfs4_proc_mkdir, | |
6733 | .rmdir = nfs4_proc_remove, | |
6734 | .readdir = nfs4_proc_readdir, | |
6735 | .mknod = nfs4_proc_mknod, | |
6736 | .statfs = nfs4_proc_statfs, | |
6737 | .fsinfo = nfs4_proc_fsinfo, | |
6738 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 6739 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
6740 | .decode_dirent = nfs4_decode_dirent, |
6741 | .read_setup = nfs4_proc_read_setup, | |
1abb5088 | 6742 | .read_pageio_init = pnfs_pageio_init_read, |
ea7c3303 | 6743 | .read_rpc_prepare = nfs4_proc_read_rpc_prepare, |
ec06c096 | 6744 | .read_done = nfs4_read_done, |
1da177e4 | 6745 | .write_setup = nfs4_proc_write_setup, |
57208fa7 | 6746 | .write_pageio_init = pnfs_pageio_init_write, |
c6cb80d0 | 6747 | .write_rpc_prepare = nfs4_proc_write_rpc_prepare, |
788e7a89 | 6748 | .write_done = nfs4_write_done, |
1da177e4 | 6749 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 6750 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 6751 | .commit_done = nfs4_commit_done, |
1da177e4 | 6752 | .lock = nfs4_proc_lock, |
e50a1c2e | 6753 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 6754 | .close_context = nfs4_close_context, |
2b484297 | 6755 | .open_context = nfs4_atomic_open, |
011e2a7f | 6756 | .have_delegation = nfs4_have_delegation, |
57ec14c5 | 6757 | .return_delegation = nfs4_inode_return_delegation, |
6663ee7f | 6758 | .alloc_client = nfs4_alloc_client, |
45a52a02 | 6759 | .init_client = nfs4_init_client, |
cdb7eced | 6760 | .free_client = nfs4_free_client, |
1179acc6 BS |
6761 | .create_server = nfs4_create_server, |
6762 | .clone_server = nfs_clone_server, | |
1da177e4 LT |
6763 | }; |
6764 | ||
64c2ce8b AK |
6765 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
6766 | .prefix = XATTR_NAME_NFSV4_ACL, | |
6767 | .list = nfs4_xattr_list_nfs4_acl, | |
6768 | .get = nfs4_xattr_get_nfs4_acl, | |
6769 | .set = nfs4_xattr_set_nfs4_acl, | |
6770 | }; | |
6771 | ||
6772 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
6773 | &nfs4_xattr_nfs4_acl_handler, | |
6774 | NULL | |
6775 | }; | |
6776 | ||
1da177e4 LT |
6777 | /* |
6778 | * Local variables: | |
6779 | * c-basic-offset: 8 | |
6780 | * End: | |
6781 | */ |