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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 | ||
961a828d TM |
382 | bool nfs4_set_task_privileged(struct rpc_task *task, void *dummy) |
383 | { | |
384 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
385 | return true; | |
e2c4ab3c AA |
386 | } |
387 | ||
d185a334 | 388 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 | 389 | { |
e3725ec0 | 390 | struct nfs4_session *session; |
13615871 | 391 | struct nfs4_slot_table *tbl; |
c10e4498 | 392 | bool send_new_highest_used_slotid = false; |
13615871 | 393 | |
dfb4f309 | 394 | if (!res->sr_slot) { |
13615871 AA |
395 | /* just wake up the next guy waiting since |
396 | * we may have not consumed a slot after all */ | |
691daf3b | 397 | dprintk("%s: No slot\n", __func__); |
35dc1d74 | 398 | return; |
13615871 | 399 | } |
e3725ec0 TM |
400 | tbl = res->sr_slot->table; |
401 | session = tbl->session; | |
ea028ac9 | 402 | |
35dc1d74 | 403 | spin_lock(&tbl->slot_tbl_lock); |
c10e4498 TM |
404 | /* Be nice to the server: try to ensure that the last transmitted |
405 | * value for highest_user_slotid <= target_highest_slotid | |
406 | */ | |
407 | if (tbl->highest_used_slotid > tbl->target_highest_slotid) | |
408 | send_new_highest_used_slotid = true; | |
409 | ||
f4af6e2a | 410 | nfs4_free_slot(tbl, res->sr_slot); |
c10e4498 TM |
411 | |
412 | if (tbl->highest_used_slotid != NFS4_NO_SLOT) | |
413 | send_new_highest_used_slotid = false; | |
414 | if (!nfs4_session_draining(session)) { | |
415 | if (rpc_wake_up_first(&tbl->slot_tbl_waitq, | |
416 | nfs4_set_task_privileged, NULL) != NULL) | |
417 | send_new_highest_used_slotid = false; | |
418 | } | |
35dc1d74 | 419 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 420 | res->sr_slot = NULL; |
c10e4498 TM |
421 | if (send_new_highest_used_slotid) |
422 | nfs41_server_notify_highest_slotid_update(session->clp); | |
13615871 AA |
423 | } |
424 | ||
14516c3a | 425 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c | 426 | { |
e3725ec0 | 427 | struct nfs4_session *session; |
933602e3 | 428 | struct nfs4_slot *slot; |
b0df806c | 429 | unsigned long timestamp; |
14516c3a | 430 | struct nfs_client *clp; |
b0df806c AA |
431 | |
432 | /* | |
433 | * sr_status remains 1 if an RPC level error occurred. The server | |
434 | * may or may not have processed the sequence operation.. | |
435 | * Proceed as if the server received and processed the sequence | |
436 | * operation. | |
437 | */ | |
438 | if (res->sr_status == 1) | |
439 | res->sr_status = NFS_OK; | |
440 | ||
468f8613 BS |
441 | /* don't increment the sequence number if the task wasn't sent */ |
442 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
443 | goto out; |
444 | ||
933602e3 | 445 | slot = res->sr_slot; |
e3725ec0 | 446 | session = slot->table->session; |
933602e3 | 447 | |
691daf3b | 448 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
449 | switch (res->sr_status) { |
450 | case 0: | |
b0df806c | 451 | /* Update the slot's sequence and clientid lease timer */ |
933602e3 TM |
452 | ++slot->seq_nr; |
453 | timestamp = slot->renewal_time; | |
e3725ec0 | 454 | clp = session->clp; |
452e9352 | 455 | do_renew_lease(clp, timestamp); |
0629e370 | 456 | /* Check sequence flags */ |
b4410c2f TM |
457 | if (res->sr_status_flags != 0) |
458 | nfs4_schedule_lease_recovery(clp); | |
464ee9f9 | 459 | nfs41_update_target_slotid(slot->table, slot, res); |
14516c3a TM |
460 | break; |
461 | case -NFS4ERR_DELAY: | |
462 | /* The server detected a resend of the RPC call and | |
463 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
464 | * of RFC5661. | |
465 | */ | |
df2fabff | 466 | dprintk("%s: slot=%u seq=%u: Operation in progress\n", |
dfb4f309 | 467 | __func__, |
df2fabff | 468 | slot->slot_nr, |
933602e3 | 469 | slot->seq_nr); |
14516c3a TM |
470 | goto out_retry; |
471 | default: | |
472 | /* Just update the slot sequence no. */ | |
933602e3 | 473 | ++slot->seq_nr; |
b0df806c AA |
474 | } |
475 | out: | |
476 | /* The session may be reset by one of the error handlers. */ | |
477 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 478 | nfs41_sequence_free_slot(res); |
14516c3a TM |
479 | return 1; |
480 | out_retry: | |
d05dd4e9 | 481 | if (!rpc_restart_call(task)) |
14516c3a TM |
482 | goto out; |
483 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
484 | return 0; | |
b0df806c AA |
485 | } |
486 | ||
14516c3a TM |
487 | static int nfs4_sequence_done(struct rpc_task *task, |
488 | struct nfs4_sequence_res *res) | |
df896455 | 489 | { |
e3725ec0 | 490 | if (res->sr_slot == NULL) |
14516c3a TM |
491 | return 1; |
492 | return nfs41_sequence_done(task, res); | |
df896455 TM |
493 | } |
494 | ||
9d12b216 TM |
495 | static void nfs41_init_sequence(struct nfs4_sequence_args *args, |
496 | struct nfs4_sequence_res *res, int cache_reply) | |
497 | { | |
2b2fa717 | 498 | args->sa_slot = NULL; |
9d12b216 TM |
499 | args->sa_cache_this = 0; |
500 | if (cache_reply) | |
501 | args->sa_cache_this = 1; | |
9d12b216 TM |
502 | res->sr_slot = NULL; |
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) && |
5601a00d | 524 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { |
0b1c8fc4 | 525 | /* The state manager will wait until the slot table is empty */ |
05f0d236 | 526 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
b069d94a | 527 | spin_unlock(&tbl->slot_tbl_lock); |
0b1c8fc4 | 528 | dprintk("%s session is draining\n", __func__); |
05f0d236 | 529 | return -EAGAIN; |
b069d94a AA |
530 | } |
531 | ||
689cf5c1 AB |
532 | if (!rpc_queue_empty(&tbl->slot_tbl_waitq) && |
533 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { | |
534 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
535 | spin_unlock(&tbl->slot_tbl_lock); | |
536 | dprintk("%s enforce FIFO order\n", __func__); | |
537 | return -EAGAIN; | |
538 | } | |
539 | ||
2dc03b7f | 540 | slot = nfs4_alloc_slot(tbl); |
69d206b5 TM |
541 | if (IS_ERR(slot)) { |
542 | /* If out of memory, try again in 1/4 second */ | |
543 | if (slot == ERR_PTR(-ENOMEM)) | |
544 | task->tk_timeout = HZ >> 2; | |
fbcd4abc AA |
545 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
546 | spin_unlock(&tbl->slot_tbl_lock); | |
547 | dprintk("<-- %s: no free slots\n", __func__); | |
548 | return -EAGAIN; | |
549 | } | |
550 | spin_unlock(&tbl->slot_tbl_lock); | |
551 | ||
689cf5c1 | 552 | rpc_task_set_priority(task, RPC_PRIORITY_NORMAL); |
2b2fa717 TM |
553 | |
554 | args->sa_slot = slot; | |
fbcd4abc | 555 | |
2dc03b7f TM |
556 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, |
557 | slot->slot_nr, slot->seq_nr); | |
fbcd4abc | 558 | |
dfb4f309 | 559 | res->sr_slot = slot; |
2a6e26cd | 560 | res->sr_status_flags = 0; |
fbcd4abc AA |
561 | /* |
562 | * sr_status is only set in decode_sequence, and so will remain | |
563 | * set to 1 if an rpc level failure occurs. | |
564 | */ | |
565 | res->sr_status = 1; | |
d9afbd1b TM |
566 | out_success: |
567 | rpc_call_start(task); | |
ce5039c1 AA |
568 | return 0; |
569 | } | |
dc70d7b3 | 570 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 571 | |
035168ab | 572 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
573 | struct nfs4_sequence_args *args, |
574 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
575 | struct rpc_task *task) |
576 | { | |
035168ab | 577 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
578 | int ret = 0; |
579 | ||
d9afbd1b TM |
580 | if (session == NULL) { |
581 | rpc_call_start(task); | |
035168ab | 582 | goto out; |
d9afbd1b | 583 | } |
035168ab | 584 | |
df2fabff | 585 | dprintk("--> %s clp %p session %p sr_slot %d\n", |
dfb4f309 | 586 | __func__, session->clp, session, res->sr_slot ? |
df2fabff | 587 | res->sr_slot->slot_nr : -1); |
ce5039c1 | 588 | |
9d12b216 | 589 | ret = nfs41_setup_sequence(session, args, res, task); |
ce5039c1 AA |
590 | out: |
591 | dprintk("<-- %s status=%d\n", __func__, ret); | |
592 | return ret; | |
593 | } | |
594 | ||
595 | struct nfs41_call_sync_data { | |
035168ab | 596 | const struct nfs_server *seq_server; |
ce5039c1 AA |
597 | struct nfs4_sequence_args *seq_args; |
598 | struct nfs4_sequence_res *seq_res; | |
ce5039c1 AA |
599 | }; |
600 | ||
601 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
602 | { | |
603 | struct nfs41_call_sync_data *data = calldata; | |
6ba7db34 | 604 | struct nfs4_session *session = nfs4_get_session(data->seq_server); |
ce5039c1 | 605 | |
035168ab TM |
606 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
607 | ||
d9afbd1b | 608 | nfs41_setup_sequence(session, data->seq_args, data->seq_res, task); |
ce5039c1 AA |
609 | } |
610 | ||
b257957e AB |
611 | static void nfs41_call_priv_sync_prepare(struct rpc_task *task, void *calldata) |
612 | { | |
613 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
614 | nfs41_call_sync_prepare(task, calldata); | |
615 | } | |
616 | ||
69ab40c4 AA |
617 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
618 | { | |
619 | struct nfs41_call_sync_data *data = calldata; | |
620 | ||
14516c3a | 621 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
622 | } |
623 | ||
17280175 | 624 | static const struct rpc_call_ops nfs41_call_sync_ops = { |
ce5039c1 | 625 | .rpc_call_prepare = nfs41_call_sync_prepare, |
69ab40c4 | 626 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
627 | }; |
628 | ||
17280175 | 629 | static const struct rpc_call_ops nfs41_call_priv_sync_ops = { |
b257957e AB |
630 | .rpc_call_prepare = nfs41_call_priv_sync_prepare, |
631 | .rpc_call_done = nfs41_call_sync_done, | |
632 | }; | |
633 | ||
7c513058 BS |
634 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
635 | struct nfs_server *server, | |
ce5039c1 AA |
636 | struct rpc_message *msg, |
637 | struct nfs4_sequence_args *args, | |
638 | struct nfs4_sequence_res *res, | |
b257957e | 639 | int privileged) |
ce5039c1 AA |
640 | { |
641 | int ret; | |
642 | struct rpc_task *task; | |
643 | struct nfs41_call_sync_data data = { | |
035168ab | 644 | .seq_server = server, |
ce5039c1 AA |
645 | .seq_args = args, |
646 | .seq_res = res, | |
ce5039c1 AA |
647 | }; |
648 | struct rpc_task_setup task_setup = { | |
7c513058 | 649 | .rpc_client = clnt, |
ce5039c1 AA |
650 | .rpc_message = msg, |
651 | .callback_ops = &nfs41_call_sync_ops, | |
652 | .callback_data = &data | |
653 | }; | |
654 | ||
b257957e AB |
655 | if (privileged) |
656 | task_setup.callback_ops = &nfs41_call_priv_sync_ops; | |
ce5039c1 AA |
657 | task = rpc_run_task(&task_setup); |
658 | if (IS_ERR(task)) | |
659 | ret = PTR_ERR(task); | |
660 | else { | |
661 | ret = task->tk_status; | |
662 | rpc_put_task(task); | |
663 | } | |
664 | return ret; | |
665 | } | |
666 | ||
fd0c0953 | 667 | static |
7c513058 BS |
668 | int _nfs4_call_sync_session(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 | { |
9d12b216 | 674 | return nfs4_call_sync_sequence(clnt, server, msg, args, res, 0); |
cccef3b9 AA |
675 | } |
676 | ||
df896455 | 677 | #else |
9d12b216 TM |
678 | static inline |
679 | void nfs41_init_sequence(struct nfs4_sequence_args *args, | |
680 | struct nfs4_sequence_res *res, int cache_reply) | |
681 | { | |
682 | } | |
683 | ||
14516c3a TM |
684 | static int nfs4_sequence_done(struct rpc_task *task, |
685 | struct nfs4_sequence_res *res) | |
df896455 | 686 | { |
14516c3a | 687 | return 1; |
df896455 | 688 | } |
cccef3b9 AA |
689 | #endif /* CONFIG_NFS_V4_1 */ |
690 | ||
fd0c0953 | 691 | static |
7c513058 BS |
692 | int _nfs4_call_sync(struct rpc_clnt *clnt, |
693 | struct nfs_server *server, | |
cccef3b9 AA |
694 | struct rpc_message *msg, |
695 | struct nfs4_sequence_args *args, | |
fd0c0953 | 696 | struct nfs4_sequence_res *res) |
cccef3b9 | 697 | { |
7c513058 | 698 | return rpc_call_sync(clnt, msg, 0); |
cccef3b9 AA |
699 | } |
700 | ||
fd0c0953 | 701 | static |
7c513058 BS |
702 | int nfs4_call_sync(struct rpc_clnt *clnt, |
703 | struct nfs_server *server, | |
e73b83f2 BS |
704 | struct rpc_message *msg, |
705 | struct nfs4_sequence_args *args, | |
706 | struct nfs4_sequence_res *res, | |
707 | int cache_reply) | |
708 | { | |
fd0c0953 | 709 | nfs41_init_sequence(args, res, cache_reply); |
7c513058 | 710 | return server->nfs_client->cl_mvops->call_sync(clnt, server, msg, |
fd0c0953 | 711 | args, res); |
e73b83f2 | 712 | } |
cccef3b9 | 713 | |
38478b24 | 714 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 715 | { |
38478b24 | 716 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 717 | |
38478b24 | 718 | spin_lock(&dir->i_lock); |
359d7d1c | 719 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA; |
a9a4a87a | 720 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 721 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 722 | dir->i_version = cinfo->after; |
38478b24 | 723 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
724 | } |
725 | ||
e56e0b78 | 726 | struct nfs4_opendata { |
c6d00e63 | 727 | struct kref kref; |
e56e0b78 TM |
728 | struct nfs_openargs o_arg; |
729 | struct nfs_openres o_res; | |
cdd4e68b TM |
730 | struct nfs_open_confirmargs c_arg; |
731 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
732 | struct nfs4_string owner_name; |
733 | struct nfs4_string group_name; | |
e56e0b78 | 734 | struct nfs_fattr f_attr; |
e56e0b78 | 735 | struct dentry *dir; |
82a2c1b7 | 736 | struct dentry *dentry; |
e56e0b78 | 737 | struct nfs4_state_owner *owner; |
aac00a8d | 738 | struct nfs4_state *state; |
e56e0b78 | 739 | struct iattr attrs; |
26e976a8 | 740 | unsigned long timestamp; |
3e309914 | 741 | unsigned int rpc_done : 1; |
24ac23ab TM |
742 | int rpc_status; |
743 | int cancelled; | |
e56e0b78 TM |
744 | }; |
745 | ||
2ced46c2 TM |
746 | |
747 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
748 | { | |
749 | p->o_res.f_attr = &p->f_attr; | |
c1d51931 TM |
750 | p->o_res.seqid = p->o_arg.seqid; |
751 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 | 752 | p->o_res.server = p->o_arg.server; |
5f657530 | 753 | p->o_res.access_request = p->o_arg.access; |
2ced46c2 | 754 | nfs_fattr_init(&p->f_attr); |
6926afd1 | 755 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
756 | } |
757 | ||
82a2c1b7 | 758 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 759 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be TM |
760 | const struct iattr *attrs, |
761 | gfp_t gfp_mask) | |
e56e0b78 | 762 | { |
82a2c1b7 | 763 | struct dentry *parent = dget_parent(dentry); |
e56e0b78 TM |
764 | struct inode *dir = parent->d_inode; |
765 | struct nfs_server *server = NFS_SERVER(dir); | |
766 | struct nfs4_opendata *p; | |
767 | ||
8535b2be | 768 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
769 | if (p == NULL) |
770 | goto err; | |
8535b2be | 771 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 TM |
772 | if (p->o_arg.seqid == NULL) |
773 | goto err_free; | |
82a2c1b7 AV |
774 | nfs_sb_active(dentry->d_sb); |
775 | p->dentry = dget(dentry); | |
e56e0b78 TM |
776 | p->dir = parent; |
777 | p->owner = sp; | |
778 | atomic_inc(&sp->so_count); | |
779 | p->o_arg.fh = NFS_FH(dir); | |
dc0b027d TM |
780 | p->o_arg.open_flags = flags; |
781 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
ae2bb032 WAA |
782 | /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS |
783 | * will return permission denied for all bits until close */ | |
784 | if (!(flags & O_EXCL)) { | |
785 | /* ask server to check for all possible rights as results | |
786 | * are cached */ | |
787 | p->o_arg.access = NFS4_ACCESS_READ | NFS4_ACCESS_MODIFY | | |
788 | NFS4_ACCESS_EXTEND | NFS4_ACCESS_EXECUTE; | |
ae2bb032 | 789 | } |
7539bbab | 790 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
95b72eb0 TM |
791 | p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time); |
792 | p->o_arg.id.uniquifier = sp->so_seqid.owner_id; | |
82a2c1b7 | 793 | p->o_arg.name = &dentry->d_name; |
e56e0b78 TM |
794 | p->o_arg.server = server; |
795 | p->o_arg.bitmask = server->attr_bitmask; | |
1549210f | 796 | p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0]; |
e56e0b78 | 797 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; |
536e43d1 | 798 | if (attrs != NULL && attrs->ia_valid != 0) { |
cd93710e | 799 | __be32 verf[2]; |
d77d76ff | 800 | |
e56e0b78 TM |
801 | p->o_arg.u.attrs = &p->attrs; |
802 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
cd93710e CL |
803 | |
804 | verf[0] = jiffies; | |
805 | verf[1] = current->pid; | |
806 | memcpy(p->o_arg.u.verifier.data, verf, | |
807 | sizeof(p->o_arg.u.verifier.data)); | |
e56e0b78 | 808 | } |
cdd4e68b TM |
809 | p->c_arg.fh = &p->o_res.fh; |
810 | p->c_arg.stateid = &p->o_res.stateid; | |
811 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 812 | nfs4_init_opendata_res(p); |
c6d00e63 | 813 | kref_init(&p->kref); |
e56e0b78 TM |
814 | return p; |
815 | err_free: | |
816 | kfree(p); | |
817 | err: | |
818 | dput(parent); | |
819 | return NULL; | |
820 | } | |
821 | ||
c6d00e63 | 822 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 823 | { |
c6d00e63 TM |
824 | struct nfs4_opendata *p = container_of(kref, |
825 | struct nfs4_opendata, kref); | |
82a2c1b7 | 826 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
827 | |
828 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
829 | if (p->state != NULL) |
830 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
831 | nfs4_put_state_owner(p->owner); |
832 | dput(p->dir); | |
82a2c1b7 AV |
833 | dput(p->dentry); |
834 | nfs_sb_deactive(sb); | |
6926afd1 | 835 | nfs_fattr_free_names(&p->f_attr); |
c6d00e63 TM |
836 | kfree(p); |
837 | } | |
838 | ||
839 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
840 | { | |
841 | if (p != NULL) | |
842 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
843 | } |
844 | ||
06f814a3 TM |
845 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
846 | { | |
06f814a3 TM |
847 | int ret; |
848 | ||
06f814a3 | 849 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
850 | return ret; |
851 | } | |
852 | ||
dc0b027d | 853 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
854 | { |
855 | int ret = 0; | |
dc0b027d | 856 | |
536e43d1 | 857 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
858 | goto out; |
859 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 860 | case FMODE_READ: |
88069f77 TM |
861 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
862 | && state->n_rdonly != 0; | |
6ee41268 TM |
863 | break; |
864 | case FMODE_WRITE: | |
88069f77 TM |
865 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
866 | && state->n_wronly != 0; | |
6ee41268 TM |
867 | break; |
868 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
869 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
870 | && state->n_rdwr != 0; | |
6ee41268 | 871 | } |
dc0b027d | 872 | out: |
6ee41268 TM |
873 | return ret; |
874 | } | |
875 | ||
dc0b027d | 876 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 877 | { |
652f89f6 TM |
878 | if (delegation == NULL) |
879 | return 0; | |
dc0b027d | 880 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 881 | return 0; |
15c831bf | 882 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 883 | return 0; |
b7391f44 | 884 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
885 | return 1; |
886 | } | |
887 | ||
dc0b027d | 888 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 889 | { |
dc0b027d | 890 | switch (fmode) { |
e7616923 TM |
891 | case FMODE_WRITE: |
892 | state->n_wronly++; | |
893 | break; | |
894 | case FMODE_READ: | |
895 | state->n_rdonly++; | |
896 | break; | |
897 | case FMODE_READ|FMODE_WRITE: | |
898 | state->n_rdwr++; | |
899 | } | |
dc0b027d | 900 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
901 | } |
902 | ||
dc0b027d | 903 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
904 | { |
905 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
f597c537 TM |
906 | nfs4_stateid_copy(&state->stateid, stateid); |
907 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
dc0b027d | 908 | switch (fmode) { |
003707c7 TM |
909 | case FMODE_READ: |
910 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
911 | break; | |
912 | case FMODE_WRITE: | |
913 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
914 | break; | |
915 | case FMODE_READ|FMODE_WRITE: | |
916 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
917 | } | |
e7616923 TM |
918 | } |
919 | ||
dc0b027d | 920 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 921 | { |
8bda4e4c | 922 | write_seqlock(&state->seqlock); |
dc0b027d | 923 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 924 | write_sequnlock(&state->seqlock); |
003707c7 TM |
925 | } |
926 | ||
dc0b027d | 927 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 928 | { |
8bda4e4c TM |
929 | /* |
930 | * Protect the call to nfs4_state_set_mode_locked and | |
931 | * serialise the stateid update | |
932 | */ | |
933 | write_seqlock(&state->seqlock); | |
003707c7 | 934 | if (deleg_stateid != NULL) { |
f597c537 | 935 | nfs4_stateid_copy(&state->stateid, deleg_stateid); |
003707c7 TM |
936 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
937 | } | |
938 | if (open_stateid != NULL) | |
dc0b027d | 939 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
940 | write_sequnlock(&state->seqlock); |
941 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 942 | update_open_stateflags(state, fmode); |
ec073428 | 943 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
944 | } |
945 | ||
dc0b027d | 946 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
947 | { |
948 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
949 | struct nfs_delegation *deleg_cur; | |
950 | int ret = 0; | |
951 | ||
dc0b027d | 952 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
953 | |
954 | rcu_read_lock(); | |
955 | deleg_cur = rcu_dereference(nfsi->delegation); | |
956 | if (deleg_cur == NULL) | |
957 | goto no_delegation; | |
958 | ||
959 | spin_lock(&deleg_cur->lock); | |
960 | if (nfsi->delegation != deleg_cur || | |
dc0b027d | 961 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
962 | goto no_delegation_unlock; |
963 | ||
964 | if (delegation == NULL) | |
965 | delegation = &deleg_cur->stateid; | |
f597c537 | 966 | else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) |
34310430 TM |
967 | goto no_delegation_unlock; |
968 | ||
b7391f44 | 969 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 970 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
971 | ret = 1; |
972 | no_delegation_unlock: | |
973 | spin_unlock(&deleg_cur->lock); | |
974 | no_delegation: | |
975 | rcu_read_unlock(); | |
976 | ||
977 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 978 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
979 | ret = 1; |
980 | } | |
981 | ||
982 | return ret; | |
983 | } | |
984 | ||
985 | ||
dc0b027d | 986 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
987 | { |
988 | struct nfs_delegation *delegation; | |
989 | ||
990 | rcu_read_lock(); | |
991 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 992 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
993 | rcu_read_unlock(); |
994 | return; | |
995 | } | |
996 | rcu_read_unlock(); | |
57ec14c5 | 997 | nfs4_inode_return_delegation(inode); |
aac00a8d TM |
998 | } |
999 | ||
6ee41268 | 1000 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1001 | { |
1002 | struct nfs4_state *state = opendata->state; | |
1003 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1004 | struct nfs_delegation *delegation; | |
536e43d1 | 1005 | int open_mode = opendata->o_arg.open_flags & (O_EXCL|O_TRUNC); |
dc0b027d | 1006 | fmode_t fmode = opendata->o_arg.fmode; |
aac00a8d TM |
1007 | nfs4_stateid stateid; |
1008 | int ret = -EAGAIN; | |
1009 | ||
aac00a8d | 1010 | for (;;) { |
dc0b027d | 1011 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 1012 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
1013 | if (can_open_cached(state, fmode, open_mode)) { |
1014 | update_open_stateflags(state, fmode); | |
6ee41268 | 1015 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
1016 | goto out_return_state; |
1017 | } | |
1018 | spin_unlock(&state->owner->so_lock); | |
1019 | } | |
34310430 TM |
1020 | rcu_read_lock(); |
1021 | delegation = rcu_dereference(nfsi->delegation); | |
652f89f6 | 1022 | if (!can_open_delegated(delegation, fmode)) { |
34310430 | 1023 | rcu_read_unlock(); |
aac00a8d | 1024 | break; |
34310430 | 1025 | } |
aac00a8d | 1026 | /* Save the delegation */ |
f597c537 | 1027 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1028 | rcu_read_unlock(); |
af22f94a | 1029 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
1030 | if (ret != 0) |
1031 | goto out; | |
1032 | ret = -EAGAIN; | |
34310430 TM |
1033 | |
1034 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1035 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1036 | goto out_return_state; |
aac00a8d | 1037 | } |
aac00a8d TM |
1038 | out: |
1039 | return ERR_PTR(ret); | |
1040 | out_return_state: | |
1041 | atomic_inc(&state->count); | |
1042 | return state; | |
1043 | } | |
1044 | ||
e23008ec AA |
1045 | static void |
1046 | nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state) | |
1047 | { | |
1048 | struct nfs_client *clp = NFS_SERVER(state->inode)->nfs_client; | |
1049 | struct nfs_delegation *delegation; | |
1050 | int delegation_flags = 0; | |
1051 | ||
1052 | rcu_read_lock(); | |
1053 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
1054 | if (delegation) | |
1055 | delegation_flags = delegation->flags; | |
1056 | rcu_read_unlock(); | |
1057 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) { | |
1058 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " | |
1059 | "returning a delegation for " | |
1060 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
1061 | clp->cl_hostname); | |
1062 | } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) | |
1063 | nfs_inode_set_delegation(state->inode, | |
1064 | data->owner->so_cred, | |
1065 | &data->o_res); | |
1066 | else | |
1067 | nfs_inode_reclaim_delegation(state->inode, | |
1068 | data->owner->so_cred, | |
1069 | &data->o_res); | |
1070 | } | |
1071 | ||
1072 | /* | |
1073 | * Check the inode attributes against the CLAIM_PREVIOUS returned attributes | |
1074 | * and update the nfs4_state. | |
1075 | */ | |
1076 | static struct nfs4_state * | |
1077 | _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data) | |
1078 | { | |
1079 | struct inode *inode = data->state->inode; | |
1080 | struct nfs4_state *state = data->state; | |
1081 | int ret; | |
1082 | ||
1083 | if (!data->rpc_done) { | |
1084 | ret = data->rpc_status; | |
1085 | goto err; | |
1086 | } | |
1087 | ||
1088 | ret = -ESTALE; | |
1089 | if (!(data->f_attr.valid & NFS_ATTR_FATTR_TYPE) || | |
1090 | !(data->f_attr.valid & NFS_ATTR_FATTR_FILEID) || | |
1091 | !(data->f_attr.valid & NFS_ATTR_FATTR_CHANGE)) | |
1092 | goto err; | |
1093 | ||
1094 | ret = -ENOMEM; | |
1095 | state = nfs4_get_open_state(inode, data->owner); | |
1096 | if (state == NULL) | |
1097 | goto err; | |
1098 | ||
1099 | ret = nfs_refresh_inode(inode, &data->f_attr); | |
1100 | if (ret) | |
1101 | goto err; | |
1102 | ||
1103 | if (data->o_res.delegation_type != 0) | |
1104 | nfs4_opendata_check_deleg(data, state); | |
1105 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
1106 | data->o_arg.fmode); | |
1107 | ||
1108 | return state; | |
1109 | err: | |
1110 | return ERR_PTR(ret); | |
1111 | ||
1112 | } | |
1113 | ||
1114 | static struct nfs4_state * | |
1115 | _nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
24ac23ab TM |
1116 | { |
1117 | struct inode *inode; | |
1118 | struct nfs4_state *state = NULL; | |
1b370bc2 | 1119 | int ret; |
24ac23ab | 1120 | |
aac00a8d | 1121 | if (!data->rpc_done) { |
6ee41268 | 1122 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1123 | goto out; |
1124 | } | |
1125 | ||
1b370bc2 | 1126 | ret = -EAGAIN; |
24ac23ab | 1127 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1128 | goto err; |
24ac23ab | 1129 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 1130 | ret = PTR_ERR(inode); |
03f28e3a | 1131 | if (IS_ERR(inode)) |
1b370bc2 TM |
1132 | goto err; |
1133 | ret = -ENOMEM; | |
24ac23ab TM |
1134 | state = nfs4_get_open_state(inode, data->owner); |
1135 | if (state == NULL) | |
1b370bc2 | 1136 | goto err_put_inode; |
e23008ec AA |
1137 | if (data->o_res.delegation_type != 0) |
1138 | nfs4_opendata_check_deleg(data, state); | |
34310430 | 1139 | update_open_stateid(state, &data->o_res.stateid, NULL, |
dc0b027d | 1140 | data->o_arg.fmode); |
24ac23ab | 1141 | iput(inode); |
aac00a8d | 1142 | out: |
24ac23ab | 1143 | return state; |
1b370bc2 TM |
1144 | err_put_inode: |
1145 | iput(inode); | |
1146 | err: | |
1147 | return ERR_PTR(ret); | |
24ac23ab TM |
1148 | } |
1149 | ||
e23008ec AA |
1150 | static struct nfs4_state * |
1151 | nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
1152 | { | |
1153 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) | |
1154 | return _nfs4_opendata_reclaim_to_nfs4_state(data); | |
1155 | return _nfs4_opendata_to_nfs4_state(data); | |
1156 | } | |
1157 | ||
864472e9 TM |
1158 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1159 | { | |
1160 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1161 | struct nfs_open_context *ctx; | |
1162 | ||
1163 | spin_lock(&state->inode->i_lock); | |
1164 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1165 | if (ctx->state != state) | |
1166 | continue; | |
1167 | get_nfs_open_context(ctx); | |
1168 | spin_unlock(&state->inode->i_lock); | |
1169 | return ctx; | |
1170 | } | |
1171 | spin_unlock(&state->inode->i_lock); | |
1172 | return ERR_PTR(-ENOENT); | |
1173 | } | |
1174 | ||
6f220ed5 TM |
1175 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
1176 | { | |
1177 | struct nfs4_opendata *opendata; | |
1178 | ||
3d4ff43d | 1179 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, NULL, GFP_NOFS); |
6f220ed5 TM |
1180 | if (opendata == NULL) |
1181 | return ERR_PTR(-ENOMEM); | |
1182 | opendata->state = state; | |
1183 | atomic_inc(&state->count); | |
1184 | return opendata; | |
1185 | } | |
1186 | ||
dc0b027d | 1187 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1188 | { |
2ced46c2 | 1189 | struct nfs4_state *newstate; |
864472e9 TM |
1190 | int ret; |
1191 | ||
dc0b027d TM |
1192 | opendata->o_arg.open_flags = 0; |
1193 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1194 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1195 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1196 | nfs4_init_opendata_res(opendata); | |
b257957e | 1197 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1198 | if (ret != 0) |
1199 | return ret; | |
2ced46c2 | 1200 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1201 | if (IS_ERR(newstate)) |
1202 | return PTR_ERR(newstate); | |
643168c2 | 1203 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1204 | *res = newstate; |
864472e9 TM |
1205 | return 0; |
1206 | } | |
1207 | ||
1208 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1209 | { | |
864472e9 | 1210 | struct nfs4_state *newstate; |
864472e9 TM |
1211 | int ret; |
1212 | ||
1213 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1214 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
1215 | smp_rmb(); |
1216 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1217 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1218 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1219 | if (ret != 0) |
1220 | return ret; | |
2ced46c2 TM |
1221 | if (newstate != state) |
1222 | return -ESTALE; | |
864472e9 TM |
1223 | } |
1224 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1225 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1226 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1227 | if (ret != 0) |
1228 | return ret; | |
2ced46c2 TM |
1229 | if (newstate != state) |
1230 | return -ESTALE; | |
864472e9 TM |
1231 | } |
1232 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1233 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1234 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1235 | if (ret != 0) |
1236 | return ret; | |
2ced46c2 TM |
1237 | if (newstate != state) |
1238 | return -ESTALE; | |
864472e9 | 1239 | } |
1ac7e2fd TM |
1240 | /* |
1241 | * We may have performed cached opens for all three recoveries. | |
1242 | * Check if we need to update the current stateid. | |
1243 | */ | |
1244 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 1245 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 1246 | write_seqlock(&state->seqlock); |
1ac7e2fd | 1247 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 1248 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 1249 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1250 | } |
864472e9 TM |
1251 | return 0; |
1252 | } | |
1253 | ||
1da177e4 LT |
1254 | /* |
1255 | * OPEN_RECLAIM: | |
1256 | * reclaim state on the server after a reboot. | |
1da177e4 | 1257 | */ |
539cd03a | 1258 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1259 | { |
1ac7e2fd | 1260 | struct nfs_delegation *delegation; |
864472e9 | 1261 | struct nfs4_opendata *opendata; |
dc0b027d | 1262 | fmode_t delegation_type = 0; |
1da177e4 LT |
1263 | int status; |
1264 | ||
6f220ed5 TM |
1265 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1266 | if (IS_ERR(opendata)) | |
1267 | return PTR_ERR(opendata); | |
864472e9 TM |
1268 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
1269 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
1270 | rcu_read_lock(); |
1271 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1272 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1273 | delegation_type = delegation->type; |
1ac7e2fd | 1274 | rcu_read_unlock(); |
864472e9 TM |
1275 | opendata->o_arg.u.delegation_type = delegation_type; |
1276 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1277 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1278 | return status; |
1279 | } | |
1280 | ||
539cd03a | 1281 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1282 | { |
1283 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1284 | struct nfs4_exception exception = { }; | |
1285 | int err; | |
1286 | do { | |
539cd03a | 1287 | err = _nfs4_do_open_reclaim(ctx, state); |
168667c4 | 1288 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1289 | break; |
1290 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1291 | } while (exception.retry); |
1292 | return err; | |
1293 | } | |
1294 | ||
864472e9 TM |
1295 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1296 | { | |
1297 | struct nfs_open_context *ctx; | |
1298 | int ret; | |
1299 | ||
1300 | ctx = nfs4_state_find_open_context(state); | |
1301 | if (IS_ERR(ctx)) | |
1302 | return PTR_ERR(ctx); | |
539cd03a | 1303 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1304 | put_nfs_open_context(ctx); |
1305 | return ret; | |
1306 | } | |
1307 | ||
13437e12 | 1308 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 1309 | { |
e56e0b78 | 1310 | struct nfs4_opendata *opendata; |
864472e9 | 1311 | int ret; |
1da177e4 | 1312 | |
6f220ed5 TM |
1313 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1314 | if (IS_ERR(opendata)) | |
1315 | return PTR_ERR(opendata); | |
e56e0b78 | 1316 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
f597c537 | 1317 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); |
864472e9 | 1318 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 1319 | nfs4_opendata_put(opendata); |
864472e9 | 1320 | return ret; |
1da177e4 LT |
1321 | } |
1322 | ||
13437e12 | 1323 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
1324 | { |
1325 | struct nfs4_exception exception = { }; | |
539cd03a | 1326 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
1327 | int err; |
1328 | do { | |
13437e12 | 1329 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
1330 | switch (err) { |
1331 | case 0: | |
965b5d67 TM |
1332 | case -ENOENT: |
1333 | case -ESTALE: | |
1334 | goto out; | |
bcfa49f6 RL |
1335 | case -NFS4ERR_BADSESSION: |
1336 | case -NFS4ERR_BADSLOT: | |
1337 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1338 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1339 | case -NFS4ERR_DEADSESSION: | |
9f594791 | 1340 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); |
bcfa49f6 | 1341 | goto out; |
1da177e4 LT |
1342 | case -NFS4ERR_STALE_CLIENTID: |
1343 | case -NFS4ERR_STALE_STATEID: | |
1344 | case -NFS4ERR_EXPIRED: | |
1345 | /* Don't recall a delegation if it was lost */ | |
0400a6b0 | 1346 | nfs4_schedule_lease_recovery(server->nfs_client); |
965b5d67 TM |
1347 | goto out; |
1348 | case -ERESTARTSYS: | |
1349 | /* | |
1350 | * The show must go on: exit, but mark the | |
1351 | * stateid as needing recovery. | |
1352 | */ | |
a1d0b5ee | 1353 | case -NFS4ERR_DELEG_REVOKED: |
965b5d67 TM |
1354 | case -NFS4ERR_ADMIN_REVOKED: |
1355 | case -NFS4ERR_BAD_STATEID: | |
a1d0b5ee TM |
1356 | nfs_inode_find_state_and_recover(state->inode, |
1357 | stateid); | |
0400a6b0 | 1358 | nfs4_schedule_stateid_recovery(server, state); |
168667c4 TM |
1359 | case -EKEYEXPIRED: |
1360 | /* | |
1361 | * User RPCSEC_GSS context has expired. | |
1362 | * We cannot recover this stateid now, so | |
1363 | * skip it and allow recovery thread to | |
1364 | * proceed. | |
1365 | */ | |
965b5d67 TM |
1366 | case -ENOMEM: |
1367 | err = 0; | |
1368 | goto out; | |
1da177e4 LT |
1369 | } |
1370 | err = nfs4_handle_exception(server, err, &exception); | |
1371 | } while (exception.retry); | |
965b5d67 | 1372 | out: |
1da177e4 LT |
1373 | return err; |
1374 | } | |
1375 | ||
cdd4e68b TM |
1376 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1377 | { | |
1378 | struct nfs4_opendata *data = calldata; | |
1379 | ||
1380 | data->rpc_status = task->tk_status; | |
26e976a8 | 1381 | if (data->rpc_status == 0) { |
f597c537 | 1382 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 1383 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1384 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1385 | data->rpc_done = 1; |
26e976a8 | 1386 | } |
cdd4e68b TM |
1387 | } |
1388 | ||
1389 | static void nfs4_open_confirm_release(void *calldata) | |
1390 | { | |
1391 | struct nfs4_opendata *data = calldata; | |
1392 | struct nfs4_state *state = NULL; | |
1393 | ||
1394 | /* If this request hasn't been cancelled, do nothing */ | |
1395 | if (data->cancelled == 0) | |
1396 | goto out_free; | |
1397 | /* In case of error, no cleanup! */ | |
3e309914 | 1398 | if (!data->rpc_done) |
cdd4e68b | 1399 | goto out_free; |
cdd4e68b | 1400 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1401 | if (!IS_ERR(state)) |
643168c2 | 1402 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1403 | out_free: |
c6d00e63 | 1404 | nfs4_opendata_put(data); |
cdd4e68b TM |
1405 | } |
1406 | ||
1407 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1408 | .rpc_call_done = nfs4_open_confirm_done, |
1409 | .rpc_release = nfs4_open_confirm_release, | |
1410 | }; | |
1411 | ||
1412 | /* | |
1413 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1414 | */ | |
1415 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1416 | { | |
1417 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1418 | struct rpc_task *task; | |
5138fde0 TM |
1419 | struct rpc_message msg = { |
1420 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1421 | .rpc_argp = &data->c_arg, | |
1422 | .rpc_resp = &data->c_res, | |
1423 | .rpc_cred = data->owner->so_cred, | |
1424 | }; | |
c970aa85 TM |
1425 | struct rpc_task_setup task_setup_data = { |
1426 | .rpc_client = server->client, | |
5138fde0 | 1427 | .rpc_message = &msg, |
c970aa85 TM |
1428 | .callback_ops = &nfs4_open_confirm_ops, |
1429 | .callback_data = data, | |
101070ca | 1430 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1431 | .flags = RPC_TASK_ASYNC, |
1432 | }; | |
1da177e4 LT |
1433 | int status; |
1434 | ||
c6d00e63 | 1435 | kref_get(&data->kref); |
3e309914 TM |
1436 | data->rpc_done = 0; |
1437 | data->rpc_status = 0; | |
5138fde0 | 1438 | data->timestamp = jiffies; |
c970aa85 | 1439 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1440 | if (IS_ERR(task)) |
cdd4e68b | 1441 | return PTR_ERR(task); |
cdd4e68b TM |
1442 | status = nfs4_wait_for_completion_rpc_task(task); |
1443 | if (status != 0) { | |
1444 | data->cancelled = 1; | |
1445 | smp_wmb(); | |
1446 | } else | |
1447 | status = data->rpc_status; | |
e6b3c4db | 1448 | rpc_put_task(task); |
1da177e4 LT |
1449 | return status; |
1450 | } | |
1451 | ||
24ac23ab | 1452 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1453 | { |
24ac23ab TM |
1454 | struct nfs4_opendata *data = calldata; |
1455 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 1456 | |
24ac23ab TM |
1457 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
1458 | return; | |
aac00a8d TM |
1459 | /* |
1460 | * Check if we still need to send an OPEN call, or if we can use | |
1461 | * a delegation instead. | |
1462 | */ | |
1463 | if (data->state != NULL) { | |
1464 | struct nfs_delegation *delegation; | |
1465 | ||
dc0b027d | 1466 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1467 | goto out_no_action; |
aac00a8d TM |
1468 | rcu_read_lock(); |
1469 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
652f89f6 TM |
1470 | if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR && |
1471 | can_open_delegated(delegation, data->o_arg.fmode)) | |
1472 | goto unlock_no_action; | |
aac00a8d TM |
1473 | rcu_read_unlock(); |
1474 | } | |
95b72eb0 | 1475 | /* Update client id. */ |
1f0e890d | 1476 | data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; |
6f220ed5 | 1477 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 1478 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
e23008ec | 1479 | data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0]; |
6f220ed5 TM |
1480 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1481 | } | |
26e976a8 | 1482 | data->timestamp = jiffies; |
035168ab | 1483 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 1484 | &data->o_arg.seq_args, |
2240a9e2 TM |
1485 | &data->o_res.seq_res, |
1486 | task) != 0) | |
1487 | nfs_release_seqid(data->o_arg.seqid); | |
6ee41268 | 1488 | return; |
652f89f6 TM |
1489 | unlock_no_action: |
1490 | rcu_read_unlock(); | |
6ee41268 TM |
1491 | out_no_action: |
1492 | task->tk_action = NULL; | |
1493 | ||
24ac23ab | 1494 | } |
1da177e4 | 1495 | |
b257957e AB |
1496 | static void nfs4_recover_open_prepare(struct rpc_task *task, void *calldata) |
1497 | { | |
1498 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
1499 | nfs4_open_prepare(task, calldata); | |
1500 | } | |
1501 | ||
24ac23ab TM |
1502 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1503 | { | |
1504 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1505 | |
24ac23ab | 1506 | data->rpc_status = task->tk_status; |
d898528c | 1507 | |
14516c3a TM |
1508 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1509 | return; | |
d898528c | 1510 | |
24ac23ab | 1511 | if (task->tk_status == 0) { |
807d66d8 TM |
1512 | if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) { |
1513 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1514 | case S_IFREG: |
1515 | break; | |
1516 | case S_IFLNK: | |
24ac23ab | 1517 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1518 | break; |
1519 | case S_IFDIR: | |
24ac23ab | 1520 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1521 | break; |
1522 | default: | |
24ac23ab | 1523 | data->rpc_status = -ENOTDIR; |
807d66d8 | 1524 | } |
6f926b5b | 1525 | } |
26e976a8 | 1526 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1527 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1528 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1529 | } |
3e309914 | 1530 | data->rpc_done = 1; |
24ac23ab | 1531 | } |
6f926b5b | 1532 | |
24ac23ab TM |
1533 | static void nfs4_open_release(void *calldata) |
1534 | { | |
1535 | struct nfs4_opendata *data = calldata; | |
1536 | struct nfs4_state *state = NULL; | |
1537 | ||
1538 | /* If this request hasn't been cancelled, do nothing */ | |
1539 | if (data->cancelled == 0) | |
1540 | goto out_free; | |
1541 | /* In case of error, no cleanup! */ | |
3e309914 | 1542 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1543 | goto out_free; |
1544 | /* In case we need an open_confirm, no cleanup! */ | |
1545 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1546 | goto out_free; | |
24ac23ab | 1547 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1548 | if (!IS_ERR(state)) |
643168c2 | 1549 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1550 | out_free: |
c6d00e63 | 1551 | nfs4_opendata_put(data); |
24ac23ab TM |
1552 | } |
1553 | ||
1554 | static const struct rpc_call_ops nfs4_open_ops = { | |
1555 | .rpc_call_prepare = nfs4_open_prepare, | |
1556 | .rpc_call_done = nfs4_open_done, | |
1557 | .rpc_release = nfs4_open_release, | |
1558 | }; | |
1559 | ||
b257957e AB |
1560 | static const struct rpc_call_ops nfs4_recover_open_ops = { |
1561 | .rpc_call_prepare = nfs4_recover_open_prepare, | |
1562 | .rpc_call_done = nfs4_open_done, | |
1563 | .rpc_release = nfs4_open_release, | |
1564 | }; | |
1565 | ||
1566 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) | |
24ac23ab TM |
1567 | { |
1568 | struct inode *dir = data->dir->d_inode; | |
1569 | struct nfs_server *server = NFS_SERVER(dir); | |
1570 | struct nfs_openargs *o_arg = &data->o_arg; | |
1571 | struct nfs_openres *o_res = &data->o_res; | |
1572 | struct rpc_task *task; | |
5138fde0 TM |
1573 | struct rpc_message msg = { |
1574 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1575 | .rpc_argp = o_arg, | |
1576 | .rpc_resp = o_res, | |
1577 | .rpc_cred = data->owner->so_cred, | |
1578 | }; | |
c970aa85 TM |
1579 | struct rpc_task_setup task_setup_data = { |
1580 | .rpc_client = server->client, | |
5138fde0 | 1581 | .rpc_message = &msg, |
c970aa85 TM |
1582 | .callback_ops = &nfs4_open_ops, |
1583 | .callback_data = data, | |
101070ca | 1584 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1585 | .flags = RPC_TASK_ASYNC, |
1586 | }; | |
24ac23ab TM |
1587 | int status; |
1588 | ||
9d12b216 | 1589 | nfs41_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 1590 | kref_get(&data->kref); |
3e309914 TM |
1591 | data->rpc_done = 0; |
1592 | data->rpc_status = 0; | |
2ced46c2 | 1593 | data->cancelled = 0; |
b257957e AB |
1594 | if (isrecover) |
1595 | task_setup_data.callback_ops = &nfs4_recover_open_ops; | |
c970aa85 | 1596 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1597 | if (IS_ERR(task)) |
1598 | return PTR_ERR(task); | |
1599 | status = nfs4_wait_for_completion_rpc_task(task); | |
1600 | if (status != 0) { | |
1601 | data->cancelled = 1; | |
1602 | smp_wmb(); | |
1603 | } else | |
1604 | status = data->rpc_status; | |
1605 | rpc_put_task(task); | |
1606 | ||
1607 | return status; | |
1608 | } | |
1609 | ||
1610 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1611 | { | |
1612 | struct inode *dir = data->dir->d_inode; | |
1613 | struct nfs_openres *o_res = &data->o_res; | |
1614 | int status; | |
1615 | ||
1616 | status = nfs4_run_open_task(data, 1); | |
1617 | if (status != 0 || !data->rpc_done) | |
1618 | return status; | |
1619 | ||
6926afd1 TM |
1620 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
1621 | ||
b257957e AB |
1622 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
1623 | status = _nfs4_proc_open_confirm(data); | |
1624 | if (status != 0) | |
1625 | return status; | |
1626 | } | |
1627 | ||
1628 | return status; | |
1629 | } | |
1630 | ||
6168f62c WAA |
1631 | static int nfs4_opendata_access(struct rpc_cred *cred, |
1632 | struct nfs4_opendata *opendata, | |
1633 | struct nfs4_state *state, fmode_t fmode) | |
1634 | { | |
1635 | struct nfs_access_entry cache; | |
1636 | u32 mask; | |
1637 | ||
1638 | /* access call failed or for some reason the server doesn't | |
1639 | * support any access modes -- defer access call until later */ | |
1640 | if (opendata->o_res.access_supported == 0) | |
1641 | return 0; | |
1642 | ||
1643 | mask = 0; | |
bbd3a8ee WAA |
1644 | /* don't check MAY_WRITE - a newly created file may not have |
1645 | * write mode bits, but POSIX allows the creating process to write */ | |
6168f62c WAA |
1646 | if (fmode & FMODE_READ) |
1647 | mask |= MAY_READ; | |
6168f62c WAA |
1648 | if (fmode & FMODE_EXEC) |
1649 | mask |= MAY_EXEC; | |
1650 | ||
1651 | cache.cred = cred; | |
1652 | cache.jiffies = jiffies; | |
1653 | nfs_access_set_mask(&cache, opendata->o_res.access_result); | |
1654 | nfs_access_add_cache(state->inode, &cache); | |
1655 | ||
bbd3a8ee | 1656 | if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0) |
6168f62c WAA |
1657 | return 0; |
1658 | ||
1659 | /* even though OPEN succeeded, access is denied. Close the file */ | |
1660 | nfs4_close_state(state, fmode); | |
998f40b5 | 1661 | return -EACCES; |
6168f62c WAA |
1662 | } |
1663 | ||
b257957e AB |
1664 | /* |
1665 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1666 | */ | |
1667 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1668 | { | |
1669 | struct inode *dir = data->dir->d_inode; | |
1670 | struct nfs_server *server = NFS_SERVER(dir); | |
1671 | struct nfs_openargs *o_arg = &data->o_arg; | |
1672 | struct nfs_openres *o_res = &data->o_res; | |
1673 | int status; | |
1674 | ||
1675 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
1676 | if (!data->rpc_done) |
1677 | return status; | |
1678 | if (status != 0) { | |
1679 | if (status == -NFS4ERR_BADNAME && | |
1680 | !(o_arg->open_flags & O_CREAT)) | |
1681 | return -ENOENT; | |
24ac23ab | 1682 | return status; |
08ef7bd3 | 1683 | } |
24ac23ab | 1684 | |
6926afd1 TM |
1685 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
1686 | ||
90ff0c54 | 1687 | if (o_arg->open_flags & O_CREAT) |
56ae19f3 | 1688 | update_changeattr(dir, &o_res->cinfo); |
0df5dd4a TM |
1689 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1690 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1691 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1692 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1693 | if (status != 0) |
24ac23ab | 1694 | return status; |
1da177e4 LT |
1695 | } |
1696 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1697 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1698 | return 0; |
1da177e4 LT |
1699 | } |
1700 | ||
d83217c1 AA |
1701 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1702 | { | |
1703 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1704 | } | |
1705 | ||
1da177e4 LT |
1706 | /* |
1707 | * OPEN_EXPIRED: | |
1708 | * reclaim state on the server after a network partition. | |
1709 | * Assumes caller holds the appropriate lock | |
1710 | */ | |
539cd03a | 1711 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1712 | { |
e56e0b78 | 1713 | struct nfs4_opendata *opendata; |
864472e9 | 1714 | int ret; |
1da177e4 | 1715 | |
6f220ed5 TM |
1716 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1717 | if (IS_ERR(opendata)) | |
1718 | return PTR_ERR(opendata); | |
864472e9 | 1719 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1720 | if (ret == -ESTALE) |
3d4ff43d | 1721 | d_drop(ctx->dentry); |
c6d00e63 | 1722 | nfs4_opendata_put(opendata); |
864472e9 | 1723 | return ret; |
1da177e4 LT |
1724 | } |
1725 | ||
a9ed2e25 | 1726 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1727 | { |
539cd03a | 1728 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1729 | struct nfs4_exception exception = { }; |
1730 | int err; | |
1731 | ||
1732 | do { | |
539cd03a | 1733 | err = _nfs4_open_expired(ctx, state); |
a9ed2e25 TM |
1734 | switch (err) { |
1735 | default: | |
1736 | goto out; | |
1737 | case -NFS4ERR_GRACE: | |
1738 | case -NFS4ERR_DELAY: | |
1739 | nfs4_handle_exception(server, err, &exception); | |
1740 | err = 0; | |
1741 | } | |
202b50dc | 1742 | } while (exception.retry); |
a9ed2e25 | 1743 | out: |
202b50dc TM |
1744 | return err; |
1745 | } | |
1746 | ||
1da177e4 LT |
1747 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1748 | { | |
1da177e4 | 1749 | struct nfs_open_context *ctx; |
864472e9 | 1750 | int ret; |
1da177e4 | 1751 | |
864472e9 TM |
1752 | ctx = nfs4_state_find_open_context(state); |
1753 | if (IS_ERR(ctx)) | |
1754 | return PTR_ERR(ctx); | |
539cd03a | 1755 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1756 | put_nfs_open_context(ctx); |
1757 | return ret; | |
1da177e4 LT |
1758 | } |
1759 | ||
f062eb6c | 1760 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd | 1761 | static void nfs41_clear_delegation_stateid(struct nfs4_state *state) |
f062eb6c | 1762 | { |
f062eb6c | 1763 | struct nfs_server *server = NFS_SERVER(state->inode); |
3e60ffdd CL |
1764 | nfs4_stateid *stateid = &state->stateid; |
1765 | int status; | |
1766 | ||
1767 | /* If a state reset has been done, test_stateid is unneeded */ | |
1768 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
1769 | return; | |
1770 | ||
1771 | status = nfs41_test_stateid(server, stateid); | |
1772 | if (status != NFS_OK) { | |
1773 | /* Free the stateid unless the server explicitly | |
1774 | * informs us the stateid is unrecognized. */ | |
1775 | if (status != -NFS4ERR_BAD_STATEID) | |
1776 | nfs41_free_stateid(server, stateid); | |
6938867e | 1777 | nfs_remove_bad_delegation(state->inode); |
3e60ffdd | 1778 | |
6938867e BS |
1779 | write_seqlock(&state->seqlock); |
1780 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
1781 | write_sequnlock(&state->seqlock); | |
3e60ffdd CL |
1782 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
1783 | } | |
1784 | } | |
1785 | ||
1786 | /** | |
1787 | * nfs41_check_open_stateid - possibly free an open stateid | |
1788 | * | |
1789 | * @state: NFSv4 state for an inode | |
1790 | * | |
1791 | * Returns NFS_OK if recovery for this stateid is now finished. | |
1792 | * Otherwise a negative NFS4ERR value is returned. | |
1793 | */ | |
1794 | static int nfs41_check_open_stateid(struct nfs4_state *state) | |
1795 | { | |
1796 | struct nfs_server *server = NFS_SERVER(state->inode); | |
fcb6d9c6 | 1797 | nfs4_stateid *stateid = &state->open_stateid; |
3e60ffdd CL |
1798 | int status; |
1799 | ||
1800 | /* If a state reset has been done, test_stateid is unneeded */ | |
1801 | if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) && | |
1802 | (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) && | |
1803 | (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0)) | |
1804 | return -NFS4ERR_BAD_STATEID; | |
1805 | ||
1806 | status = nfs41_test_stateid(server, stateid); | |
1807 | if (status != NFS_OK) { | |
1808 | /* Free the stateid unless the server explicitly | |
1809 | * informs us the stateid is unrecognized. */ | |
1810 | if (status != -NFS4ERR_BAD_STATEID) | |
1811 | nfs41_free_stateid(server, stateid); | |
1812 | ||
1813 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1814 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1815 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
b01dd1d8 BS |
1816 | } |
1817 | return status; | |
1818 | } | |
1819 | ||
1820 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
1821 | { | |
eb64cf96 | 1822 | int status; |
b01dd1d8 | 1823 | |
3e60ffdd CL |
1824 | nfs41_clear_delegation_stateid(state); |
1825 | status = nfs41_check_open_stateid(state); | |
eb64cf96 CL |
1826 | if (status != NFS_OK) |
1827 | status = nfs4_open_expired(sp, state); | |
1828 | return status; | |
f062eb6c BS |
1829 | } |
1830 | #endif | |
1831 | ||
aa53ed54 JL |
1832 | /* |
1833 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1834 | * fields corresponding to attributes that were used to store the verifier. | |
1835 | * Make sure we clobber those fields in the later setattr call | |
1836 | */ | |
1837 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1838 | { | |
1839 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1840 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1841 | sattr->ia_valid |= ATTR_ATIME; | |
1842 | ||
1843 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1844 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1845 | sattr->ia_valid |= ATTR_MTIME; | |
1846 | } | |
1847 | ||
1da177e4 | 1848 | /* |
24ac23ab | 1849 | * Returns a referenced nfs4_state |
1da177e4 | 1850 | */ |
82be417a AA |
1851 | static int _nfs4_do_open(struct inode *dir, |
1852 | struct dentry *dentry, | |
1853 | fmode_t fmode, | |
1854 | int flags, | |
1855 | struct iattr *sattr, | |
1856 | struct rpc_cred *cred, | |
1857 | struct nfs4_state **res, | |
1858 | struct nfs4_threshold **ctx_th) | |
1da177e4 LT |
1859 | { |
1860 | struct nfs4_state_owner *sp; | |
1861 | struct nfs4_state *state = NULL; | |
1862 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1863 | struct nfs4_opendata *opendata; |
aac00a8d | 1864 | int status; |
1da177e4 LT |
1865 | |
1866 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 1867 | status = -ENOMEM; |
d1e284d5 TM |
1868 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
1869 | if (sp == NULL) { | |
1da177e4 LT |
1870 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
1871 | goto out_err; | |
1872 | } | |
58d9714a TM |
1873 | status = nfs4_recover_expired_lease(server); |
1874 | if (status != 0) | |
b4454fe1 | 1875 | goto err_put_state_owner; |
82a2c1b7 AV |
1876 | if (dentry->d_inode != NULL) |
1877 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 1878 | status = -ENOMEM; |
82a2c1b7 | 1879 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, GFP_KERNEL); |
e56e0b78 | 1880 | if (opendata == NULL) |
95d35cb4 | 1881 | goto err_put_state_owner; |
1da177e4 | 1882 | |
82be417a AA |
1883 | if (ctx_th && server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
1884 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
1885 | if (!opendata->f_attr.mdsthreshold) | |
1886 | goto err_opendata_put; | |
1549210f | 1887 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 1888 | } |
82a2c1b7 AV |
1889 | if (dentry->d_inode != NULL) |
1890 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 1891 | |
24ac23ab | 1892 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1893 | if (status != 0) |
c6d00e63 | 1894 | goto err_opendata_put; |
1da177e4 | 1895 | |
24ac23ab | 1896 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1897 | status = PTR_ERR(state); |
1898 | if (IS_ERR(state)) | |
c6d00e63 | 1899 | goto err_opendata_put; |
0df5dd4a | 1900 | if (server->caps & NFS_CAP_POSIX_LOCK) |
8e469ebd | 1901 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); |
0ab64e0e | 1902 | |
6168f62c WAA |
1903 | status = nfs4_opendata_access(cred, opendata, state, fmode); |
1904 | if (status != 0) | |
1905 | goto err_opendata_put; | |
1906 | ||
0ab64e0e TM |
1907 | if (opendata->o_arg.open_flags & O_EXCL) { |
1908 | nfs4_exclusive_attrset(opendata, sattr); | |
1909 | ||
1910 | nfs_fattr_init(opendata->o_res.f_attr); | |
1911 | status = nfs4_do_setattr(state->inode, cred, | |
1912 | opendata->o_res.f_attr, sattr, | |
1913 | state); | |
1914 | if (status == 0) | |
1915 | nfs_setattr_update_inode(state->inode, sattr); | |
1916 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
1917 | } | |
82be417a AA |
1918 | |
1919 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) | |
1920 | *ctx_th = opendata->f_attr.mdsthreshold; | |
1921 | else | |
1922 | kfree(opendata->f_attr.mdsthreshold); | |
1923 | opendata->f_attr.mdsthreshold = NULL; | |
1924 | ||
c6d00e63 | 1925 | nfs4_opendata_put(opendata); |
1da177e4 | 1926 | nfs4_put_state_owner(sp); |
1da177e4 LT |
1927 | *res = state; |
1928 | return 0; | |
c6d00e63 | 1929 | err_opendata_put: |
82be417a | 1930 | kfree(opendata->f_attr.mdsthreshold); |
c6d00e63 | 1931 | nfs4_opendata_put(opendata); |
e56e0b78 TM |
1932 | err_put_state_owner: |
1933 | nfs4_put_state_owner(sp); | |
1da177e4 | 1934 | out_err: |
1da177e4 LT |
1935 | *res = NULL; |
1936 | return status; | |
1937 | } | |
1938 | ||
1939 | ||
82be417a AA |
1940 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
1941 | struct dentry *dentry, | |
1942 | fmode_t fmode, | |
1943 | int flags, | |
1944 | struct iattr *sattr, | |
1945 | struct rpc_cred *cred, | |
1946 | struct nfs4_threshold **ctx_th) | |
1da177e4 LT |
1947 | { |
1948 | struct nfs4_exception exception = { }; | |
1949 | struct nfs4_state *res; | |
1950 | int status; | |
1951 | ||
6168f62c | 1952 | fmode &= FMODE_READ|FMODE_WRITE|FMODE_EXEC; |
1da177e4 | 1953 | do { |
82be417a AA |
1954 | status = _nfs4_do_open(dir, dentry, fmode, flags, sattr, cred, |
1955 | &res, ctx_th); | |
1da177e4 LT |
1956 | if (status == 0) |
1957 | break; | |
1958 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1959 | * book-keeping w.r.t. state-changing operations | |
1960 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1961 | * It is actually a sign of a bug on the client or on the server. | |
1962 | * | |
1963 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1964 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1965 | * have unhashed the old state_owner for us, and that we can |
1966 | * therefore safely retry using a new one. We should still warn | |
1967 | * the user though... | |
1968 | */ | |
1969 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 1970 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
1971 | " returned a bad sequence-id error!\n", |
1972 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1973 | exception.retry = 1; |
1974 | continue; | |
1975 | } | |
550f5747 TM |
1976 | /* |
1977 | * BAD_STATEID on OPEN means that the server cancelled our | |
1978 | * state before it received the OPEN_CONFIRM. | |
1979 | * Recover by retrying the request as per the discussion | |
1980 | * on Page 181 of RFC3530. | |
1981 | */ | |
1982 | if (status == -NFS4ERR_BAD_STATEID) { | |
1983 | exception.retry = 1; | |
1984 | continue; | |
1985 | } | |
aac00a8d TM |
1986 | if (status == -EAGAIN) { |
1987 | /* We must have found a delegation */ | |
1988 | exception.retry = 1; | |
1989 | continue; | |
1990 | } | |
1da177e4 LT |
1991 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1992 | status, &exception)); | |
1993 | } while (exception.retry); | |
1994 | return res; | |
1995 | } | |
1996 | ||
659bfcd6 TM |
1997 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1998 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1999 | struct nfs4_state *state) | |
1da177e4 | 2000 | { |
3e4f6290 | 2001 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 2002 | struct nfs_setattrargs arg = { |
3e4f6290 | 2003 | .fh = NFS_FH(inode), |
1da177e4 LT |
2004 | .iap = sattr, |
2005 | .server = server, | |
2006 | .bitmask = server->attr_bitmask, | |
2007 | }; | |
2008 | struct nfs_setattrres res = { | |
2009 | .fattr = fattr, | |
2010 | .server = server, | |
2011 | }; | |
2012 | struct rpc_message msg = { | |
659bfcd6 TM |
2013 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
2014 | .rpc_argp = &arg, | |
2015 | .rpc_resp = &res, | |
2016 | .rpc_cred = cred, | |
1da177e4 | 2017 | }; |
26e976a8 | 2018 | unsigned long timestamp = jiffies; |
65e4308d | 2019 | int status; |
1da177e4 | 2020 | |
0e574af1 | 2021 | nfs_fattr_init(fattr); |
1da177e4 | 2022 | |
4fc8796d | 2023 | if (state != NULL) { |
2a369153 TM |
2024 | struct nfs_lockowner lockowner = { |
2025 | .l_owner = current->files, | |
2026 | .l_pid = current->tgid, | |
2027 | }; | |
4fc8796d | 2028 | nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, |
2a369153 | 2029 | &lockowner); |
4fc8796d TM |
2030 | } else if (nfs4_copy_delegation_stateid(&arg.stateid, inode, |
2031 | FMODE_WRITE)) { | |
3e4f6290 | 2032 | /* Use that stateid */ |
08e9eac4 | 2033 | } else |
f597c537 | 2034 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 2035 | |
7c513058 | 2036 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
2037 | if (status == 0 && state != NULL) |
2038 | renew_lease(server, timestamp); | |
65e4308d | 2039 | return status; |
1da177e4 LT |
2040 | } |
2041 | ||
659bfcd6 TM |
2042 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2043 | struct nfs_fattr *fattr, struct iattr *sattr, | |
2044 | struct nfs4_state *state) | |
1da177e4 | 2045 | { |
3e4f6290 | 2046 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
2047 | struct nfs4_exception exception = { |
2048 | .state = state, | |
3114ea7a | 2049 | .inode = inode, |
a1d0b5ee | 2050 | }; |
1da177e4 LT |
2051 | int err; |
2052 | do { | |
451146be TM |
2053 | err = _nfs4_do_setattr(inode, cred, fattr, sattr, state); |
2054 | switch (err) { | |
2055 | case -NFS4ERR_OPENMODE: | |
2056 | if (state && !(state->state & FMODE_WRITE)) { | |
2057 | err = -EBADF; | |
2058 | if (sattr->ia_valid & ATTR_OPEN) | |
2059 | err = -EACCES; | |
2060 | goto out; | |
2061 | } | |
2062 | } | |
2063 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 2064 | } while (exception.retry); |
451146be | 2065 | out: |
1da177e4 LT |
2066 | return err; |
2067 | } | |
2068 | ||
2069 | struct nfs4_closedata { | |
2070 | struct inode *inode; | |
2071 | struct nfs4_state *state; | |
2072 | struct nfs_closeargs arg; | |
2073 | struct nfs_closeres res; | |
516a6af6 | 2074 | struct nfs_fattr fattr; |
26e976a8 | 2075 | unsigned long timestamp; |
f7e8917a FI |
2076 | bool roc; |
2077 | u32 roc_barrier; | |
1da177e4 LT |
2078 | }; |
2079 | ||
963d8fe5 | 2080 | static void nfs4_free_closedata(void *data) |
9512135d | 2081 | { |
963d8fe5 TM |
2082 | struct nfs4_closedata *calldata = data; |
2083 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 2084 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 2085 | |
f7e8917a FI |
2086 | if (calldata->roc) |
2087 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
2088 | nfs4_put_open_state(calldata->state); |
2089 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 2090 | nfs4_put_state_owner(sp); |
324d003b | 2091 | nfs_sb_deactive_async(sb); |
9512135d TM |
2092 | kfree(calldata); |
2093 | } | |
2094 | ||
88069f77 TM |
2095 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
2096 | fmode_t fmode) | |
2097 | { | |
2098 | spin_lock(&state->owner->so_lock); | |
2099 | if (!(fmode & FMODE_READ)) | |
2100 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2101 | if (!(fmode & FMODE_WRITE)) | |
2102 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2103 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
2104 | spin_unlock(&state->owner->so_lock); | |
2105 | } | |
2106 | ||
963d8fe5 | 2107 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2108 | { |
963d8fe5 | 2109 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2110 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
2111 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
2112 | ||
a3ca5651 | 2113 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2114 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2115 | return; | |
1da177e4 LT |
2116 | /* hmm. we are done with the inode, and in the process of freeing |
2117 | * the state_owner. we keep this around to process errors | |
2118 | */ | |
1da177e4 LT |
2119 | switch (task->tk_status) { |
2120 | case 0: | |
f7e8917a FI |
2121 | if (calldata->roc) |
2122 | pnfs_roc_set_barrier(state->inode, | |
2123 | calldata->roc_barrier); | |
45328c35 | 2124 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 2125 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
2126 | nfs4_close_clear_stateid_flags(state, |
2127 | calldata->arg.fmode); | |
1da177e4 LT |
2128 | break; |
2129 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
2130 | case -NFS4ERR_OLD_STATEID: |
2131 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2132 | case -NFS4ERR_EXPIRED: |
dc0b027d | 2133 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2134 | break; |
1da177e4 | 2135 | default: |
72211dbe TM |
2136 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
2137 | rpc_restart_call_prepare(task); | |
1da177e4 | 2138 | } |
72211dbe | 2139 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2140 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2141 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2142 | } |
2143 | ||
4ce70ada | 2144 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2145 | { |
4ce70ada | 2146 | struct nfs4_closedata *calldata = data; |
9512135d | 2147 | struct nfs4_state *state = calldata->state; |
7fdab069 | 2148 | struct inode *inode = calldata->inode; |
88069f77 | 2149 | int call_close = 0; |
9512135d | 2150 | |
a3ca5651 | 2151 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2152 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 2153 | return; |
003707c7 | 2154 | |
88069f77 TM |
2155 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
2156 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 2157 | spin_lock(&state->owner->so_lock); |
003707c7 | 2158 | /* Calculate the change in open mode */ |
e7616923 | 2159 | if (state->n_rdwr == 0) { |
003707c7 | 2160 | if (state->n_rdonly == 0) { |
88069f77 TM |
2161 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
2162 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2163 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
2164 | } |
2165 | if (state->n_wronly == 0) { | |
88069f77 TM |
2166 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
2167 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2168 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 2169 | } |
e7616923 | 2170 | } |
4cecb76f | 2171 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2172 | |
2173 | if (!call_close) { | |
963d8fe5 TM |
2174 | /* Note: exit _without_ calling nfs4_close_done */ |
2175 | task->tk_action = NULL; | |
a3ca5651 | 2176 | goto out; |
9512135d | 2177 | } |
88069f77 | 2178 | |
f7e8917a | 2179 | if (calldata->arg.fmode == 0) { |
88069f77 | 2180 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a | 2181 | if (calldata->roc && |
7fdab069 | 2182 | pnfs_roc_drain(inode, &calldata->roc_barrier, task)) |
a3ca5651 | 2183 | goto out; |
f7e8917a | 2184 | } |
88069f77 | 2185 | |
516a6af6 | 2186 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2187 | calldata->timestamp = jiffies; |
7fdab069 | 2188 | if (nfs4_setup_sequence(NFS_SERVER(inode), |
9d12b216 TM |
2189 | &calldata->arg.seq_args, |
2190 | &calldata->res.seq_res, | |
2240a9e2 TM |
2191 | task) != 0) |
2192 | nfs_release_seqid(calldata->arg.seqid); | |
a3ca5651 CL |
2193 | out: |
2194 | dprintk("%s: done!\n", __func__); | |
1da177e4 LT |
2195 | } |
2196 | ||
963d8fe5 | 2197 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2198 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2199 | .rpc_call_done = nfs4_close_done, |
2200 | .rpc_release = nfs4_free_closedata, | |
2201 | }; | |
2202 | ||
1da177e4 LT |
2203 | /* |
2204 | * It is possible for data to be read/written from a mem-mapped file | |
2205 | * after the sys_close call (which hits the vfs layer as a flush). | |
2206 | * This means that we can't safely call nfsv4 close on a file until | |
2207 | * the inode is cleared. This in turn means that we are not good | |
2208 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2209 | * share state even when we are done with one of the three share | |
2210 | * stateid's in the inode. | |
2211 | * | |
2212 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2213 | */ | |
1f7977c1 | 2214 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) |
1da177e4 | 2215 | { |
4a35bd41 | 2216 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2217 | struct nfs4_closedata *calldata; |
b39e625b TM |
2218 | struct nfs4_state_owner *sp = state->owner; |
2219 | struct rpc_task *task; | |
5138fde0 TM |
2220 | struct rpc_message msg = { |
2221 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2222 | .rpc_cred = state->owner->so_cred, | |
2223 | }; | |
c970aa85 TM |
2224 | struct rpc_task_setup task_setup_data = { |
2225 | .rpc_client = server->client, | |
5138fde0 | 2226 | .rpc_message = &msg, |
c970aa85 | 2227 | .callback_ops = &nfs4_close_ops, |
101070ca | 2228 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2229 | .flags = RPC_TASK_ASYNC, |
2230 | }; | |
9512135d | 2231 | int status = -ENOMEM; |
1da177e4 | 2232 | |
8535b2be | 2233 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2234 | if (calldata == NULL) |
9512135d | 2235 | goto out; |
9d12b216 | 2236 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2237 | calldata->inode = state->inode; |
1da177e4 | 2238 | calldata->state = state; |
4a35bd41 | 2239 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2240 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2241 | /* Serialization for the sequence id */ |
8535b2be | 2242 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2243 | if (calldata->arg.seqid == NULL) |
2244 | goto out_free_calldata; | |
dc0b027d | 2245 | calldata->arg.fmode = 0; |
a65318bf | 2246 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2247 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2248 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2249 | calldata->res.server = server; |
1f7977c1 | 2250 | calldata->roc = pnfs_roc(state->inode); |
643168c2 | 2251 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2252 | |
1174dd1f TM |
2253 | msg.rpc_argp = &calldata->arg; |
2254 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2255 | task_setup_data.callback_data = calldata; |
2256 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2257 | if (IS_ERR(task)) |
2258 | return PTR_ERR(task); | |
a49c3c77 TM |
2259 | status = 0; |
2260 | if (wait) | |
2261 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2262 | rpc_put_task(task); |
a49c3c77 | 2263 | return status; |
9512135d TM |
2264 | out_free_calldata: |
2265 | kfree(calldata); | |
2266 | out: | |
b39e625b TM |
2267 | nfs4_put_open_state(state); |
2268 | nfs4_put_state_owner(sp); | |
9512135d | 2269 | return status; |
1da177e4 LT |
2270 | } |
2271 | ||
2b484297 | 2272 | static struct inode * |
cd9a1c0e | 2273 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2274 | { |
1da177e4 | 2275 | struct nfs4_state *state; |
1da177e4 | 2276 | |
565277f6 | 2277 | /* Protect against concurrent sillydeletes */ |
82be417a AA |
2278 | state = nfs4_do_open(dir, ctx->dentry, ctx->mode, open_flags, attr, |
2279 | ctx->cred, &ctx->mdsthreshold); | |
f46e0bd3 TM |
2280 | if (IS_ERR(state)) |
2281 | return ERR_CAST(state); | |
cd9a1c0e | 2282 | ctx->state = state; |
f46e0bd3 | 2283 | return igrab(state->inode); |
1da177e4 LT |
2284 | } |
2285 | ||
1185a552 | 2286 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2287 | { |
2288 | if (ctx->state == NULL) | |
2289 | return; | |
2290 | if (is_sync) | |
643168c2 | 2291 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2292 | else |
643168c2 | 2293 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2294 | } |
1da177e4 LT |
2295 | |
2296 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2297 | { | |
43652ad5 BH |
2298 | struct nfs4_server_caps_arg args = { |
2299 | .fhandle = fhandle, | |
2300 | }; | |
1da177e4 LT |
2301 | struct nfs4_server_caps_res res = {}; |
2302 | struct rpc_message msg = { | |
2303 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2304 | .rpc_argp = &args, |
1da177e4 LT |
2305 | .rpc_resp = &res, |
2306 | }; | |
2307 | int status; | |
2308 | ||
7c513058 | 2309 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2310 | if (status == 0) { |
2311 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2312 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2313 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2314 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2315 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2316 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2317 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2318 | server->caps |= NFS_CAP_ACLS; | |
2319 | if (res.has_links != 0) | |
2320 | server->caps |= NFS_CAP_HARDLINKS; | |
2321 | if (res.has_symlinks != 0) | |
2322 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2323 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2324 | server->caps |= NFS_CAP_FILEID; | |
2325 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2326 | server->caps |= NFS_CAP_MODE; | |
2327 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2328 | server->caps |= NFS_CAP_NLINK; | |
2329 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2330 | server->caps |= NFS_CAP_OWNER; | |
2331 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2332 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2333 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2334 | server->caps |= NFS_CAP_ATIME; | |
2335 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2336 | server->caps |= NFS_CAP_CTIME; | |
2337 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2338 | server->caps |= NFS_CAP_MTIME; | |
2339 | ||
a65318bf TM |
2340 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2341 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2342 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 | 2343 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 2344 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 2345 | } |
cccef3b9 | 2346 | |
1da177e4 LT |
2347 | return status; |
2348 | } | |
2349 | ||
55a97593 | 2350 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2351 | { |
2352 | struct nfs4_exception exception = { }; | |
2353 | int err; | |
2354 | do { | |
2355 | err = nfs4_handle_exception(server, | |
2356 | _nfs4_server_capabilities(server, fhandle), | |
2357 | &exception); | |
2358 | } while (exception.retry); | |
2359 | return err; | |
2360 | } | |
2361 | ||
2362 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2363 | struct nfs_fsinfo *info) | |
2364 | { | |
1da177e4 LT |
2365 | struct nfs4_lookup_root_arg args = { |
2366 | .bitmask = nfs4_fattr_bitmap, | |
2367 | }; | |
2368 | struct nfs4_lookup_res res = { | |
2369 | .server = server, | |
0e574af1 | 2370 | .fattr = info->fattr, |
1da177e4 LT |
2371 | .fh = fhandle, |
2372 | }; | |
2373 | struct rpc_message msg = { | |
2374 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2375 | .rpc_argp = &args, | |
2376 | .rpc_resp = &res, | |
2377 | }; | |
008f55d0 | 2378 | |
0e574af1 | 2379 | nfs_fattr_init(info->fattr); |
7c513058 | 2380 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2381 | } |
2382 | ||
2383 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2384 | struct nfs_fsinfo *info) | |
2385 | { | |
2386 | struct nfs4_exception exception = { }; | |
2387 | int err; | |
2388 | do { | |
fb8a5ba8 BS |
2389 | err = _nfs4_lookup_root(server, fhandle, info); |
2390 | switch (err) { | |
2391 | case 0: | |
2392 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 2393 | goto out; |
fb8a5ba8 BS |
2394 | default: |
2395 | err = nfs4_handle_exception(server, err, &exception); | |
2396 | } | |
1da177e4 | 2397 | } while (exception.retry); |
05e9cfb4 | 2398 | out: |
1da177e4 LT |
2399 | return err; |
2400 | } | |
2401 | ||
8f70e95f BS |
2402 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2403 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2404 | { | |
2405 | struct rpc_auth *auth; | |
2406 | int ret; | |
2407 | ||
2408 | auth = rpcauth_create(flavor, server->client); | |
e8d920c5 | 2409 | if (IS_ERR(auth)) { |
8f70e95f BS |
2410 | ret = -EIO; |
2411 | goto out; | |
2412 | } | |
2413 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2414 | out: |
2415 | return ret; | |
2416 | } | |
2417 | ||
801a16dc | 2418 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2419 | struct nfs_fsinfo *info) |
1da177e4 | 2420 | { |
8f70e95f | 2421 | int i, len, status = 0; |
0fabee24 | 2422 | rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS]; |
1da177e4 | 2423 | |
6a1a1e34 | 2424 | len = rpcauth_list_flavors(flav_array, ARRAY_SIZE(flav_array)); |
4ea8fed5 TM |
2425 | if (len < 0) |
2426 | return len; | |
8f70e95f BS |
2427 | |
2428 | for (i = 0; i < len; i++) { | |
6a1a1e34 CL |
2429 | /* AUTH_UNIX is the default flavor if none was specified, |
2430 | * thus has already been tried. */ | |
2431 | if (flav_array[i] == RPC_AUTH_UNIX) | |
2432 | continue; | |
2433 | ||
8f70e95f | 2434 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); |
fb8a5ba8 | 2435 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2436 | continue; |
2437 | break; | |
8f70e95f | 2438 | } |
fb8a5ba8 BS |
2439 | /* |
2440 | * -EACCESS could mean that the user doesn't have correct permissions | |
2441 | * to access the mount. It could also mean that we tried to mount | |
2442 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2443 | * existing mount programs don't handle -EACCES very well so it should | |
2444 | * be mapped to -EPERM instead. | |
2445 | */ | |
2446 | if (status == -EACCES) | |
2447 | status = -EPERM; | |
801a16dc BS |
2448 | return status; |
2449 | } | |
2450 | ||
2451 | /* | |
2452 | * get the file handle for the "/" directory on the server | |
2453 | */ | |
3028eb2b BS |
2454 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
2455 | struct nfs_fsinfo *info) | |
801a16dc | 2456 | { |
fca78d6d | 2457 | int minor_version = server->nfs_client->cl_minorversion; |
801a16dc | 2458 | int status = nfs4_lookup_root(server, fhandle, info); |
fb8a5ba8 BS |
2459 | if ((status == -NFS4ERR_WRONGSEC) && !(server->flags & NFS_MOUNT_SECFLAVOUR)) |
2460 | /* | |
2461 | * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM | |
2462 | * by nfs4_map_errors() as this function exits. | |
2463 | */ | |
fca78d6d | 2464 | status = nfs_v4_minor_ops[minor_version]->find_root_sec(server, fhandle, info); |
1da177e4 LT |
2465 | if (status == 0) |
2466 | status = nfs4_server_capabilities(server, fhandle); | |
2467 | if (status == 0) | |
2468 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2469 | return nfs4_map_errors(status); |
1da177e4 LT |
2470 | } |
2471 | ||
bae36241 BS |
2472 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
2473 | struct nfs_fsinfo *info) | |
2474 | { | |
2475 | int error; | |
2476 | struct nfs_fattr *fattr = info->fattr; | |
2477 | ||
2478 | error = nfs4_server_capabilities(server, mntfh); | |
2479 | if (error < 0) { | |
2480 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
2481 | return error; | |
2482 | } | |
2483 | ||
2484 | error = nfs4_proc_getattr(server, mntfh, fattr); | |
2485 | if (error < 0) { | |
2486 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
2487 | return error; | |
2488 | } | |
2489 | ||
2490 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
2491 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
2492 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
2493 | ||
2494 | return error; | |
2495 | } | |
2496 | ||
6b97fd3d MN |
2497 | /* |
2498 | * Get locations and (maybe) other attributes of a referral. | |
2499 | * Note that we'll actually follow the referral later when | |
2500 | * we detect fsid mismatch in inode revalidation | |
2501 | */ | |
f05d147f BS |
2502 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
2503 | const struct qstr *name, struct nfs_fattr *fattr, | |
2504 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
2505 | { |
2506 | int status = -ENOMEM; | |
2507 | struct page *page = NULL; | |
2508 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2509 | |
2510 | page = alloc_page(GFP_KERNEL); | |
2511 | if (page == NULL) | |
2512 | goto out; | |
2513 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2514 | if (locations == NULL) | |
2515 | goto out; | |
2516 | ||
f05d147f | 2517 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
2518 | if (status != 0) |
2519 | goto out; | |
2520 | /* Make sure server returned a different fsid for the referral */ | |
2521 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2522 | dprintk("%s: server did not return a different fsid for" |
2523 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2524 | status = -EIO; |
2525 | goto out; | |
2526 | } | |
533eb461 AA |
2527 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2528 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2529 | |
533eb461 | 2530 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2531 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2532 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2533 | out: | |
2534 | if (page) | |
2535 | __free_page(page); | |
5d7ca35a | 2536 | kfree(locations); |
6b97fd3d MN |
2537 | return status; |
2538 | } | |
2539 | ||
1da177e4 LT |
2540 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2541 | { | |
2542 | struct nfs4_getattr_arg args = { | |
2543 | .fh = fhandle, | |
2544 | .bitmask = server->attr_bitmask, | |
2545 | }; | |
2546 | struct nfs4_getattr_res res = { | |
2547 | .fattr = fattr, | |
2548 | .server = server, | |
2549 | }; | |
2550 | struct rpc_message msg = { | |
2551 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2552 | .rpc_argp = &args, | |
2553 | .rpc_resp = &res, | |
2554 | }; | |
2555 | ||
0e574af1 | 2556 | nfs_fattr_init(fattr); |
7c513058 | 2557 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2558 | } |
2559 | ||
2560 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2561 | { | |
2562 | struct nfs4_exception exception = { }; | |
2563 | int err; | |
2564 | do { | |
2565 | err = nfs4_handle_exception(server, | |
2566 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2567 | &exception); | |
2568 | } while (exception.retry); | |
2569 | return err; | |
2570 | } | |
2571 | ||
2572 | /* | |
2573 | * The file is not closed if it is opened due to the a request to change | |
2574 | * the size of the file. The open call will not be needed once the | |
2575 | * VFS layer lookup-intents are implemented. | |
2576 | * | |
2577 | * Close is called when the inode is destroyed. | |
2578 | * If we haven't opened the file for O_WRONLY, we | |
2579 | * need to in the size_change case to obtain a stateid. | |
2580 | * | |
2581 | * Got race? | |
2582 | * Because OPEN is always done by name in nfsv4, it is | |
2583 | * possible that we opened a different file by the same | |
2584 | * name. We can recognize this race condition, but we | |
2585 | * can't do anything about it besides returning an error. | |
2586 | * | |
2587 | * This will be fixed with VFS changes (lookup-intent). | |
2588 | */ | |
2589 | static int | |
2590 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2591 | struct iattr *sattr) | |
2592 | { | |
08e9eac4 | 2593 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2594 | struct rpc_cred *cred = NULL; |
d530838b | 2595 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2596 | int status; |
2597 | ||
8a1636c4 BH |
2598 | if (pnfs_ld_layoutret_on_setattr(inode)) |
2599 | pnfs_return_layout(inode); | |
2600 | ||
0e574af1 | 2601 | nfs_fattr_init(fattr); |
1da177e4 | 2602 | |
2669940d AA |
2603 | /* Deal with open(O_TRUNC) */ |
2604 | if (sattr->ia_valid & ATTR_OPEN) | |
2605 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME|ATTR_OPEN); | |
2606 | ||
2607 | /* Optimization: if the end result is no change, don't RPC */ | |
2608 | if ((sattr->ia_valid & ~(ATTR_FILE)) == 0) | |
2609 | return 0; | |
2610 | ||
d530838b | 2611 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2612 | if (sattr->ia_valid & ATTR_FILE) { |
2613 | struct nfs_open_context *ctx; | |
2614 | ||
2615 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2616 | if (ctx) { |
2617 | cred = ctx->cred; | |
2618 | state = ctx->state; | |
2619 | } | |
659bfcd6 | 2620 | } |
08e9eac4 | 2621 | |
659bfcd6 | 2622 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2623 | if (status == 0) |
2624 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2625 | return status; |
2626 | } | |
2627 | ||
0c2e53f1 TM |
2628 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
2629 | const struct qstr *name, struct nfs_fh *fhandle, | |
2630 | struct nfs_fattr *fattr) | |
2b3de441 | 2631 | { |
0c2e53f1 | 2632 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
2633 | int status; |
2634 | struct nfs4_lookup_arg args = { | |
2635 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 2636 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
2637 | .name = name, |
2638 | }; | |
2639 | struct nfs4_lookup_res res = { | |
2640 | .server = server, | |
2641 | .fattr = fattr, | |
2642 | .fh = fhandle, | |
2643 | }; | |
2644 | struct rpc_message msg = { | |
2645 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2646 | .rpc_argp = &args, | |
2647 | .rpc_resp = &res, | |
2648 | }; | |
2649 | ||
2650 | nfs_fattr_init(fattr); | |
2651 | ||
1da177e4 | 2652 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 2653 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2654 | dprintk("NFS reply lookup: %d\n", status); |
2655 | return status; | |
2656 | } | |
2657 | ||
72de53ec | 2658 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 2659 | { |
7ebb9315 | 2660 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 2661 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
2662 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
2663 | fattr->nlink = 2; | |
2664 | } | |
2665 | ||
72de53ec BS |
2666 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
2667 | struct qstr *name, struct nfs_fh *fhandle, | |
2668 | struct nfs_fattr *fattr) | |
1da177e4 LT |
2669 | { |
2670 | struct nfs4_exception exception = { }; | |
72de53ec | 2671 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
2672 | int err; |
2673 | do { | |
72de53ec BS |
2674 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr); |
2675 | switch (err) { | |
08ef7bd3 | 2676 | case -NFS4ERR_BADNAME: |
72de53ec BS |
2677 | err = -ENOENT; |
2678 | goto out; | |
0c2e53f1 | 2679 | case -NFS4ERR_MOVED: |
f05d147f | 2680 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
72de53ec | 2681 | goto out; |
0c2e53f1 | 2682 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
2683 | err = -EPERM; |
2684 | if (client != *clnt) | |
2685 | goto out; | |
2686 | ||
2687 | client = nfs4_create_sec_client(client, dir, name); | |
2688 | if (IS_ERR(client)) | |
2689 | return PTR_ERR(client); | |
2690 | ||
2691 | exception.retry = 1; | |
2692 | break; | |
2693 | default: | |
2694 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 2695 | } |
1da177e4 | 2696 | } while (exception.retry); |
72de53ec BS |
2697 | |
2698 | out: | |
2699 | if (err == 0) | |
2700 | *clnt = client; | |
2701 | else if (client != *clnt) | |
2702 | rpc_shutdown_client(client); | |
2703 | ||
1da177e4 LT |
2704 | return err; |
2705 | } | |
2706 | ||
80a16b21 | 2707 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, |
72de53ec BS |
2708 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2709 | { | |
2710 | int status; | |
2711 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
2712 | ||
2713 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2714 | if (client != NFS_CLIENT(dir)) { | |
2715 | rpc_shutdown_client(client); | |
2716 | nfs_fixup_secinfo_attributes(fattr); | |
2717 | } | |
2718 | return status; | |
2719 | } | |
2720 | ||
f05d147f BS |
2721 | struct rpc_clnt * |
2722 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, | |
2723 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2724 | { | |
2725 | int status; | |
2726 | struct rpc_clnt *client = rpc_clone_client(NFS_CLIENT(dir)); | |
2727 | ||
2728 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2729 | if (status < 0) { | |
2730 | rpc_shutdown_client(client); | |
2731 | return ERR_PTR(status); | |
2732 | } | |
2733 | return client; | |
2734 | } | |
2735 | ||
1da177e4 LT |
2736 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
2737 | { | |
76b32999 | 2738 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2739 | struct nfs4_accessargs args = { |
2740 | .fh = NFS_FH(inode), | |
a4980e78 | 2741 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
2742 | }; |
2743 | struct nfs4_accessres res = { | |
2744 | .server = server, | |
1da177e4 | 2745 | }; |
1da177e4 LT |
2746 | struct rpc_message msg = { |
2747 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2748 | .rpc_argp = &args, | |
2749 | .rpc_resp = &res, | |
2750 | .rpc_cred = entry->cred, | |
2751 | }; | |
2752 | int mode = entry->mask; | |
2753 | int status; | |
2754 | ||
2755 | /* | |
2756 | * Determine which access bits we want to ask for... | |
2757 | */ | |
2758 | if (mode & MAY_READ) | |
2759 | args.access |= NFS4_ACCESS_READ; | |
2760 | if (S_ISDIR(inode->i_mode)) { | |
2761 | if (mode & MAY_WRITE) | |
2762 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2763 | if (mode & MAY_EXEC) | |
2764 | args.access |= NFS4_ACCESS_LOOKUP; | |
2765 | } else { | |
2766 | if (mode & MAY_WRITE) | |
2767 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2768 | if (mode & MAY_EXEC) | |
2769 | args.access |= NFS4_ACCESS_EXECUTE; | |
2770 | } | |
c407d41a TM |
2771 | |
2772 | res.fattr = nfs_alloc_fattr(); | |
2773 | if (res.fattr == NULL) | |
2774 | return -ENOMEM; | |
2775 | ||
7c513058 | 2776 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 2777 | if (!status) { |
6168f62c | 2778 | nfs_access_set_mask(entry, res.access); |
c407d41a | 2779 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2780 | } |
c407d41a | 2781 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2782 | return status; |
2783 | } | |
2784 | ||
2785 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2786 | { | |
2787 | struct nfs4_exception exception = { }; | |
2788 | int err; | |
2789 | do { | |
2790 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2791 | _nfs4_proc_access(inode, entry), | |
2792 | &exception); | |
2793 | } while (exception.retry); | |
2794 | return err; | |
2795 | } | |
2796 | ||
2797 | /* | |
2798 | * TODO: For the time being, we don't try to get any attributes | |
2799 | * along with any of the zero-copy operations READ, READDIR, | |
2800 | * READLINK, WRITE. | |
2801 | * | |
2802 | * In the case of the first three, we want to put the GETATTR | |
2803 | * after the read-type operation -- this is because it is hard | |
2804 | * to predict the length of a GETATTR response in v4, and thus | |
2805 | * align the READ data correctly. This means that the GETATTR | |
2806 | * may end up partially falling into the page cache, and we should | |
2807 | * shift it into the 'tail' of the xdr_buf before processing. | |
2808 | * To do this efficiently, we need to know the total length | |
2809 | * of data received, which doesn't seem to be available outside | |
2810 | * of the RPC layer. | |
2811 | * | |
2812 | * In the case of WRITE, we also want to put the GETATTR after | |
2813 | * the operation -- in this case because we want to make sure | |
140150db | 2814 | * we get the post-operation mtime and size. |
1da177e4 LT |
2815 | * |
2816 | * Both of these changes to the XDR layer would in fact be quite | |
2817 | * minor, but I decided to leave them for a subsequent patch. | |
2818 | */ | |
2819 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2820 | unsigned int pgbase, unsigned int pglen) | |
2821 | { | |
2822 | struct nfs4_readlink args = { | |
2823 | .fh = NFS_FH(inode), | |
2824 | .pgbase = pgbase, | |
2825 | .pglen = pglen, | |
2826 | .pages = &page, | |
2827 | }; | |
f50c7000 | 2828 | struct nfs4_readlink_res res; |
1da177e4 LT |
2829 | struct rpc_message msg = { |
2830 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2831 | .rpc_argp = &args, | |
f50c7000 | 2832 | .rpc_resp = &res, |
1da177e4 LT |
2833 | }; |
2834 | ||
7c513058 | 2835 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2836 | } |
2837 | ||
2838 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2839 | unsigned int pgbase, unsigned int pglen) | |
2840 | { | |
2841 | struct nfs4_exception exception = { }; | |
2842 | int err; | |
2843 | do { | |
2844 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2845 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2846 | &exception); | |
2847 | } while (exception.retry); | |
2848 | return err; | |
2849 | } | |
2850 | ||
1da177e4 | 2851 | /* |
8867fe58 | 2852 | * This is just for mknod. open(O_CREAT) will always do ->open_context(). |
1da177e4 | 2853 | */ |
1da177e4 LT |
2854 | static int |
2855 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 2856 | int flags) |
1da177e4 | 2857 | { |
8867fe58 | 2858 | struct nfs_open_context *ctx; |
1da177e4 | 2859 | struct nfs4_state *state; |
1da177e4 LT |
2860 | int status = 0; |
2861 | ||
8867fe58 MS |
2862 | ctx = alloc_nfs_open_context(dentry, FMODE_READ); |
2863 | if (IS_ERR(ctx)) | |
2864 | return PTR_ERR(ctx); | |
2865 | ||
a8a5da99 | 2866 | sattr->ia_mode &= ~current_umask(); |
8626e4a4 TM |
2867 | state = nfs4_do_open(dir, dentry, ctx->mode, |
2868 | flags, sattr, ctx->cred, | |
2869 | &ctx->mdsthreshold); | |
d4d9cdcb | 2870 | d_drop(dentry); |
1da177e4 LT |
2871 | if (IS_ERR(state)) { |
2872 | status = PTR_ERR(state); | |
c0204fd2 | 2873 | goto out; |
1da177e4 | 2874 | } |
d4d9cdcb | 2875 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2876 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
8867fe58 | 2877 | ctx->state = state; |
1da177e4 | 2878 | out: |
8867fe58 | 2879 | put_nfs_open_context(ctx); |
1da177e4 LT |
2880 | return status; |
2881 | } | |
2882 | ||
2883 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2884 | { | |
16e42959 | 2885 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2886 | struct nfs_removeargs args = { |
1da177e4 | 2887 | .fh = NFS_FH(dir), |
26fe5750 | 2888 | .name = *name, |
16e42959 | 2889 | }; |
4fdc17b2 | 2890 | struct nfs_removeres res = { |
16e42959 | 2891 | .server = server, |
1da177e4 | 2892 | }; |
1da177e4 | 2893 | struct rpc_message msg = { |
4fdc17b2 TM |
2894 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
2895 | .rpc_argp = &args, | |
2896 | .rpc_resp = &res, | |
1da177e4 | 2897 | }; |
778d2817 | 2898 | int status; |
1da177e4 | 2899 | |
7c513058 | 2900 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 2901 | if (status == 0) |
16e42959 | 2902 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
2903 | return status; |
2904 | } | |
2905 | ||
2906 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2907 | { | |
2908 | struct nfs4_exception exception = { }; | |
2909 | int err; | |
2910 | do { | |
2911 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2912 | _nfs4_proc_remove(dir, name), | |
2913 | &exception); | |
2914 | } while (exception.retry); | |
2915 | return err; | |
2916 | } | |
2917 | ||
e4eff1a6 | 2918 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 2919 | { |
e4eff1a6 TM |
2920 | struct nfs_server *server = NFS_SERVER(dir); |
2921 | struct nfs_removeargs *args = msg->rpc_argp; | |
2922 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 2923 | |
e4eff1a6 | 2924 | res->server = server; |
1da177e4 | 2925 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
9d12b216 | 2926 | nfs41_init_sequence(&args->seq_args, &res->seq_res, 1); |
1da177e4 LT |
2927 | } |
2928 | ||
34e137cc BS |
2929 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
2930 | { | |
d9afbd1b TM |
2931 | nfs4_setup_sequence(NFS_SERVER(data->dir), |
2932 | &data->args.seq_args, | |
2933 | &data->res.seq_res, | |
2934 | task); | |
1da177e4 LT |
2935 | } |
2936 | ||
e4eff1a6 | 2937 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 2938 | { |
e4eff1a6 TM |
2939 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
2940 | ||
14516c3a TM |
2941 | if (!nfs4_sequence_done(task, &res->seq_res)) |
2942 | return 0; | |
9e33bed5 | 2943 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
2944 | return 0; |
2945 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 2946 | return 1; |
1da177e4 LT |
2947 | } |
2948 | ||
d3d4152a JL |
2949 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
2950 | { | |
2951 | struct nfs_server *server = NFS_SERVER(dir); | |
2952 | struct nfs_renameargs *arg = msg->rpc_argp; | |
2953 | struct nfs_renameres *res = msg->rpc_resp; | |
2954 | ||
2955 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 2956 | res->server = server; |
9d12b216 | 2957 | nfs41_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
2958 | } |
2959 | ||
c6bfa1a1 BS |
2960 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
2961 | { | |
d9afbd1b TM |
2962 | nfs4_setup_sequence(NFS_SERVER(data->old_dir), |
2963 | &data->args.seq_args, | |
2964 | &data->res.seq_res, | |
2965 | task); | |
d3d4152a JL |
2966 | } |
2967 | ||
2968 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
2969 | struct inode *new_dir) | |
2970 | { | |
2971 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
2972 | ||
2973 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
2974 | return 0; | |
2975 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
2976 | return 0; | |
2977 | ||
2978 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 2979 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
2980 | return 1; |
2981 | } | |
2982 | ||
1da177e4 LT |
2983 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
2984 | struct inode *new_dir, struct qstr *new_name) | |
2985 | { | |
6caf2c82 | 2986 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 2987 | struct nfs_renameargs arg = { |
1da177e4 LT |
2988 | .old_dir = NFS_FH(old_dir), |
2989 | .new_dir = NFS_FH(new_dir), | |
2990 | .old_name = old_name, | |
2991 | .new_name = new_name, | |
6caf2c82 | 2992 | }; |
e8582a8b | 2993 | struct nfs_renameres res = { |
6caf2c82 | 2994 | .server = server, |
1da177e4 | 2995 | }; |
1da177e4 LT |
2996 | struct rpc_message msg = { |
2997 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
2998 | .rpc_argp = &arg, | |
2999 | .rpc_resp = &res, | |
3000 | }; | |
011fff72 | 3001 | int status = -ENOMEM; |
1da177e4 | 3002 | |
7c513058 | 3003 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
3004 | if (!status) { |
3005 | update_changeattr(old_dir, &res.old_cinfo); | |
3006 | update_changeattr(new_dir, &res.new_cinfo); | |
3007 | } | |
3008 | return status; | |
3009 | } | |
3010 | ||
3011 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
3012 | struct inode *new_dir, struct qstr *new_name) | |
3013 | { | |
3014 | struct nfs4_exception exception = { }; | |
3015 | int err; | |
3016 | do { | |
3017 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
3018 | _nfs4_proc_rename(old_dir, old_name, | |
3019 | new_dir, new_name), | |
3020 | &exception); | |
3021 | } while (exception.retry); | |
3022 | return err; | |
3023 | } | |
3024 | ||
3025 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3026 | { | |
91ba2eee | 3027 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3028 | struct nfs4_link_arg arg = { |
3029 | .fh = NFS_FH(inode), | |
3030 | .dir_fh = NFS_FH(dir), | |
3031 | .name = name, | |
91ba2eee TM |
3032 | .bitmask = server->attr_bitmask, |
3033 | }; | |
91ba2eee TM |
3034 | struct nfs4_link_res res = { |
3035 | .server = server, | |
1da177e4 | 3036 | }; |
1da177e4 LT |
3037 | struct rpc_message msg = { |
3038 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
3039 | .rpc_argp = &arg, | |
91ba2eee | 3040 | .rpc_resp = &res, |
1da177e4 | 3041 | }; |
136f2627 TM |
3042 | int status = -ENOMEM; |
3043 | ||
3044 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 3045 | if (res.fattr == NULL) |
136f2627 | 3046 | goto out; |
1da177e4 | 3047 | |
7c513058 | 3048 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
3049 | if (!status) { |
3050 | update_changeattr(dir, &res.cinfo); | |
73a3d07c | 3051 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 3052 | } |
136f2627 | 3053 | out: |
136f2627 | 3054 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3055 | return status; |
3056 | } | |
3057 | ||
3058 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3059 | { | |
3060 | struct nfs4_exception exception = { }; | |
3061 | int err; | |
3062 | do { | |
3063 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3064 | _nfs4_proc_link(inode, dir, name), | |
3065 | &exception); | |
3066 | } while (exception.retry); | |
3067 | return err; | |
3068 | } | |
3069 | ||
57dc9a57 TM |
3070 | struct nfs4_createdata { |
3071 | struct rpc_message msg; | |
3072 | struct nfs4_create_arg arg; | |
3073 | struct nfs4_create_res res; | |
3074 | struct nfs_fh fh; | |
3075 | struct nfs_fattr fattr; | |
57dc9a57 TM |
3076 | }; |
3077 | ||
3078 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
3079 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
3080 | { | |
3081 | struct nfs4_createdata *data; | |
3082 | ||
3083 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3084 | if (data != NULL) { | |
3085 | struct nfs_server *server = NFS_SERVER(dir); | |
3086 | ||
3087 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
3088 | data->msg.rpc_argp = &data->arg; | |
3089 | data->msg.rpc_resp = &data->res; | |
3090 | data->arg.dir_fh = NFS_FH(dir); | |
3091 | data->arg.server = server; | |
3092 | data->arg.name = name; | |
3093 | data->arg.attrs = sattr; | |
3094 | data->arg.ftype = ftype; | |
3095 | data->arg.bitmask = server->attr_bitmask; | |
3096 | data->res.server = server; | |
3097 | data->res.fh = &data->fh; | |
3098 | data->res.fattr = &data->fattr; | |
57dc9a57 | 3099 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
3100 | } |
3101 | return data; | |
3102 | } | |
3103 | ||
3104 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3105 | { | |
7c513058 | 3106 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3107 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3108 | if (status == 0) { |
3109 | update_changeattr(dir, &data->res.dir_cinfo); | |
57dc9a57 TM |
3110 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); |
3111 | } | |
3112 | return status; | |
3113 | } | |
3114 | ||
3115 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3116 | { | |
3117 | kfree(data); | |
3118 | } | |
3119 | ||
4f390c15 | 3120 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3121 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 3122 | { |
57dc9a57 TM |
3123 | struct nfs4_createdata *data; |
3124 | int status = -ENAMETOOLONG; | |
1da177e4 | 3125 | |
94a6d753 | 3126 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 3127 | goto out; |
4f390c15 | 3128 | |
57dc9a57 TM |
3129 | status = -ENOMEM; |
3130 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
3131 | if (data == NULL) | |
3132 | goto out; | |
3133 | ||
3134 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
3135 | data->arg.u.symlink.pages = &page; | |
3136 | data->arg.u.symlink.len = len; | |
1da177e4 | 3137 | |
57dc9a57 TM |
3138 | status = nfs4_do_create(dir, dentry, data); |
3139 | ||
3140 | nfs4_free_createdata(data); | |
3141 | out: | |
1da177e4 LT |
3142 | return status; |
3143 | } | |
3144 | ||
4f390c15 | 3145 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3146 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
3147 | { |
3148 | struct nfs4_exception exception = { }; | |
3149 | int err; | |
3150 | do { | |
3151 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
3152 | _nfs4_proc_symlink(dir, dentry, page, |
3153 | len, sattr), | |
1da177e4 LT |
3154 | &exception); |
3155 | } while (exception.retry); | |
3156 | return err; | |
3157 | } | |
3158 | ||
3159 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3160 | struct iattr *sattr) | |
3161 | { | |
57dc9a57 TM |
3162 | struct nfs4_createdata *data; |
3163 | int status = -ENOMEM; | |
1da177e4 | 3164 | |
57dc9a57 TM |
3165 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3166 | if (data == NULL) | |
3167 | goto out; | |
3168 | ||
3169 | status = nfs4_do_create(dir, dentry, data); | |
3170 | ||
3171 | nfs4_free_createdata(data); | |
3172 | out: | |
1da177e4 LT |
3173 | return status; |
3174 | } | |
3175 | ||
3176 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3177 | struct iattr *sattr) | |
3178 | { | |
3179 | struct nfs4_exception exception = { }; | |
3180 | int err; | |
a8a5da99 AK |
3181 | |
3182 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3183 | do { |
3184 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3185 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
3186 | &exception); | |
3187 | } while (exception.retry); | |
3188 | return err; | |
3189 | } | |
3190 | ||
3191 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3192 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3193 | { |
3194 | struct inode *dir = dentry->d_inode; | |
3195 | struct nfs4_readdir_arg args = { | |
3196 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3197 | .pages = pages, |
1da177e4 LT |
3198 | .pgbase = 0, |
3199 | .count = count, | |
96d25e53 | 3200 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3201 | .plus = plus, |
1da177e4 LT |
3202 | }; |
3203 | struct nfs4_readdir_res res; | |
3204 | struct rpc_message msg = { | |
3205 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3206 | .rpc_argp = &args, | |
3207 | .rpc_resp = &res, | |
3208 | .rpc_cred = cred, | |
3209 | }; | |
3210 | int status; | |
3211 | ||
3110ff80 | 3212 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
3213 | dentry->d_parent->d_name.name, |
3214 | dentry->d_name.name, | |
3215 | (unsigned long long)cookie); | |
c3f52af3 | 3216 | nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args); |
1da177e4 | 3217 | res.pgbase = args.pgbase; |
7c513058 | 3218 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3219 | if (status >= 0) { |
c3f52af3 | 3220 | memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3221 | status += args.pgbase; |
3222 | } | |
c4812998 TM |
3223 | |
3224 | nfs_invalidate_atime(dir); | |
3225 | ||
3110ff80 | 3226 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3227 | return status; |
3228 | } | |
3229 | ||
3230 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3231 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3232 | { |
3233 | struct nfs4_exception exception = { }; | |
3234 | int err; | |
3235 | do { | |
3236 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
3237 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 3238 | pages, count, plus), |
1da177e4 LT |
3239 | &exception); |
3240 | } while (exception.retry); | |
3241 | return err; | |
3242 | } | |
3243 | ||
3244 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3245 | struct iattr *sattr, dev_t rdev) | |
3246 | { | |
57dc9a57 TM |
3247 | struct nfs4_createdata *data; |
3248 | int mode = sattr->ia_mode; | |
3249 | int status = -ENOMEM; | |
1da177e4 | 3250 | |
57dc9a57 TM |
3251 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); |
3252 | if (data == NULL) | |
3253 | goto out; | |
3254 | ||
1da177e4 | 3255 | if (S_ISFIFO(mode)) |
57dc9a57 | 3256 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3257 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3258 | data->arg.ftype = NF4BLK; |
3259 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3260 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3261 | } |
3262 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3263 | data->arg.ftype = NF4CHR; |
3264 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3265 | data->arg.u.device.specdata2 = MINOR(rdev); | |
4ea8fed5 TM |
3266 | } else if (!S_ISSOCK(mode)) { |
3267 | status = -EINVAL; | |
3268 | goto out_free; | |
1da177e4 | 3269 | } |
1da177e4 | 3270 | |
57dc9a57 | 3271 | status = nfs4_do_create(dir, dentry, data); |
4ea8fed5 | 3272 | out_free: |
57dc9a57 TM |
3273 | nfs4_free_createdata(data); |
3274 | out: | |
1da177e4 LT |
3275 | return status; |
3276 | } | |
3277 | ||
3278 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3279 | struct iattr *sattr, dev_t rdev) | |
3280 | { | |
3281 | struct nfs4_exception exception = { }; | |
3282 | int err; | |
a8a5da99 AK |
3283 | |
3284 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3285 | do { |
3286 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3287 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
3288 | &exception); | |
3289 | } while (exception.retry); | |
3290 | return err; | |
3291 | } | |
3292 | ||
3293 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3294 | struct nfs_fsstat *fsstat) | |
3295 | { | |
3296 | struct nfs4_statfs_arg args = { | |
3297 | .fh = fhandle, | |
3298 | .bitmask = server->attr_bitmask, | |
3299 | }; | |
24ad148a BH |
3300 | struct nfs4_statfs_res res = { |
3301 | .fsstat = fsstat, | |
3302 | }; | |
1da177e4 LT |
3303 | struct rpc_message msg = { |
3304 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3305 | .rpc_argp = &args, | |
24ad148a | 3306 | .rpc_resp = &res, |
1da177e4 LT |
3307 | }; |
3308 | ||
0e574af1 | 3309 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3310 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3311 | } |
3312 | ||
3313 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3314 | { | |
3315 | struct nfs4_exception exception = { }; | |
3316 | int err; | |
3317 | do { | |
3318 | err = nfs4_handle_exception(server, | |
3319 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3320 | &exception); | |
3321 | } while (exception.retry); | |
3322 | return err; | |
3323 | } | |
3324 | ||
3325 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3326 | struct nfs_fsinfo *fsinfo) | |
3327 | { | |
3328 | struct nfs4_fsinfo_arg args = { | |
3329 | .fh = fhandle, | |
3330 | .bitmask = server->attr_bitmask, | |
3331 | }; | |
3dda5e43 BH |
3332 | struct nfs4_fsinfo_res res = { |
3333 | .fsinfo = fsinfo, | |
3334 | }; | |
1da177e4 LT |
3335 | struct rpc_message msg = { |
3336 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3337 | .rpc_argp = &args, | |
3dda5e43 | 3338 | .rpc_resp = &res, |
1da177e4 LT |
3339 | }; |
3340 | ||
7c513058 | 3341 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3342 | } |
3343 | ||
3344 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3345 | { | |
3346 | struct nfs4_exception exception = { }; | |
3347 | int err; | |
3348 | ||
3349 | do { | |
3350 | err = nfs4_handle_exception(server, | |
3351 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
3352 | &exception); | |
3353 | } while (exception.retry); | |
3354 | return err; | |
3355 | } | |
3356 | ||
3357 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3358 | { | |
e38eb650 BS |
3359 | int error; |
3360 | ||
0e574af1 | 3361 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 | 3362 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
dc182549 PT |
3363 | if (error == 0) { |
3364 | /* block layout checks this! */ | |
3365 | server->pnfs_blksize = fsinfo->blksize; | |
e38eb650 | 3366 | set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype); |
dc182549 | 3367 | } |
e38eb650 BS |
3368 | |
3369 | return error; | |
1da177e4 LT |
3370 | } |
3371 | ||
3372 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3373 | struct nfs_pathconf *pathconf) | |
3374 | { | |
3375 | struct nfs4_pathconf_arg args = { | |
3376 | .fh = fhandle, | |
3377 | .bitmask = server->attr_bitmask, | |
3378 | }; | |
d45b2989 BH |
3379 | struct nfs4_pathconf_res res = { |
3380 | .pathconf = pathconf, | |
3381 | }; | |
1da177e4 LT |
3382 | struct rpc_message msg = { |
3383 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3384 | .rpc_argp = &args, | |
d45b2989 | 3385 | .rpc_resp = &res, |
1da177e4 LT |
3386 | }; |
3387 | ||
3388 | /* None of the pathconf attributes are mandatory to implement */ | |
3389 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3390 | memset(pathconf, 0, sizeof(*pathconf)); | |
3391 | return 0; | |
3392 | } | |
3393 | ||
0e574af1 | 3394 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3395 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3396 | } |
3397 | ||
3398 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3399 | struct nfs_pathconf *pathconf) | |
3400 | { | |
3401 | struct nfs4_exception exception = { }; | |
3402 | int err; | |
3403 | ||
3404 | do { | |
3405 | err = nfs4_handle_exception(server, | |
3406 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3407 | &exception); | |
3408 | } while (exception.retry); | |
3409 | return err; | |
3410 | } | |
3411 | ||
d20581aa BH |
3412 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3413 | { | |
cd841605 | 3414 | nfs_invalidate_atime(data->header->inode); |
d20581aa BH |
3415 | } |
3416 | ||
cbdabc7f | 3417 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3418 | { |
cd841605 | 3419 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
1da177e4 | 3420 | |
9e33bed5 | 3421 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3422 | rpc_restart_call_prepare(task); |
ec06c096 | 3423 | return -EAGAIN; |
1da177e4 | 3424 | } |
8850df99 | 3425 | |
d20581aa | 3426 | __nfs4_read_done_cb(data); |
1da177e4 | 3427 | if (task->tk_status > 0) |
ec06c096 TM |
3428 | renew_lease(server, data->timestamp); |
3429 | return 0; | |
1da177e4 LT |
3430 | } |
3431 | ||
cbdabc7f AA |
3432 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3433 | { | |
3434 | ||
3435 | dprintk("--> %s\n", __func__); | |
3436 | ||
3437 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3438 | return -EAGAIN; | |
3439 | ||
d20581aa BH |
3440 | return data->read_done_cb ? data->read_done_cb(task, data) : |
3441 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
3442 | } |
3443 | ||
bdc7f021 | 3444 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3445 | { |
1da177e4 | 3446 | data->timestamp = jiffies; |
cbdabc7f | 3447 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3448 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
9d12b216 | 3449 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
1da177e4 LT |
3450 | } |
3451 | ||
ea7c3303 BS |
3452 | static void nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) |
3453 | { | |
d9afbd1b TM |
3454 | nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
3455 | &data->args.seq_args, | |
3456 | &data->res.seq_res, | |
3457 | task); | |
1da177e4 LT |
3458 | } |
3459 | ||
b029bc9b | 3460 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3461 | { |
cd841605 | 3462 | struct inode *inode = data->header->inode; |
1da177e4 | 3463 | |
9e33bed5 | 3464 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3465 | rpc_restart_call_prepare(task); |
788e7a89 | 3466 | return -EAGAIN; |
1da177e4 | 3467 | } |
4f9838c7 | 3468 | if (task->tk_status >= 0) { |
1da177e4 | 3469 | renew_lease(NFS_SERVER(inode), data->timestamp); |
5a37f851 | 3470 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); |
4f9838c7 | 3471 | } |
788e7a89 | 3472 | return 0; |
1da177e4 LT |
3473 | } |
3474 | ||
b029bc9b FI |
3475 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3476 | { | |
3477 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3478 | return -EAGAIN; | |
d20581aa BH |
3479 | return data->write_done_cb ? data->write_done_cb(task, data) : |
3480 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
3481 | } |
3482 | ||
5a37f851 TM |
3483 | static |
3484 | bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data *data) | |
a69aef14 | 3485 | { |
5a37f851 TM |
3486 | const struct nfs_pgio_header *hdr = data->header; |
3487 | ||
3488 | /* Don't request attributes for pNFS or O_DIRECT writes */ | |
3489 | if (data->ds_clp != NULL || hdr->dreq != NULL) | |
3490 | return false; | |
3491 | /* Otherwise, request attributes if and only if we don't hold | |
3492 | * a delegation | |
3493 | */ | |
011e2a7f | 3494 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 3495 | } |
a69aef14 | 3496 | |
bdc7f021 | 3497 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3498 | { |
cd841605 | 3499 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
bdc7f021 | 3500 | |
5a37f851 | 3501 | if (!nfs4_write_need_cache_consistency_data(data)) { |
7ffd1064 FI |
3502 | data->args.bitmask = NULL; |
3503 | data->res.fattr = NULL; | |
3504 | } else | |
3505 | data->args.bitmask = server->cache_consistency_bitmask; | |
5a37f851 | 3506 | |
b029bc9b FI |
3507 | if (!data->write_done_cb) |
3508 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3509 | data->res.server = server; |
1da177e4 LT |
3510 | data->timestamp = jiffies; |
3511 | ||
bdc7f021 | 3512 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
9d12b216 | 3513 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3514 | } |
3515 | ||
c6cb80d0 BS |
3516 | static void nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) |
3517 | { | |
d9afbd1b TM |
3518 | nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
3519 | &data->args.seq_args, | |
3520 | &data->res.seq_res, | |
3521 | task); | |
1da177e4 LT |
3522 | } |
3523 | ||
0b7c0153 | 3524 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 | 3525 | { |
d9afbd1b TM |
3526 | nfs4_setup_sequence(NFS_SERVER(data->inode), |
3527 | &data->args.seq_args, | |
3528 | &data->res.seq_res, | |
3529 | task); | |
1da177e4 LT |
3530 | } |
3531 | ||
0b7c0153 | 3532 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 3533 | { |
1da177e4 | 3534 | struct inode *inode = data->inode; |
14516c3a | 3535 | |
9e33bed5 | 3536 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
d00c5d43 | 3537 | rpc_restart_call_prepare(task); |
788e7a89 | 3538 | return -EAGAIN; |
1da177e4 | 3539 | } |
788e7a89 | 3540 | return 0; |
1da177e4 LT |
3541 | } |
3542 | ||
0b7c0153 | 3543 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
3544 | { |
3545 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3546 | return -EAGAIN; | |
0b7c0153 | 3547 | return data->commit_done_cb(task, data); |
5f452431 FI |
3548 | } |
3549 | ||
0b7c0153 | 3550 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 3551 | { |
788e7a89 | 3552 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 3553 | |
0b7c0153 FI |
3554 | if (data->commit_done_cb == NULL) |
3555 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 3556 | data->res.server = server; |
bdc7f021 | 3557 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
9d12b216 | 3558 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3559 | } |
3560 | ||
9bc4e3ca CL |
3561 | struct nfs4_renewdata { |
3562 | struct nfs_client *client; | |
3563 | unsigned long timestamp; | |
3564 | }; | |
3565 | ||
1da177e4 LT |
3566 | /* |
3567 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3568 | * standalone procedure for queueing an asynchronous RENEW. | |
3569 | */ | |
9bc4e3ca | 3570 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3571 | { |
9bc4e3ca CL |
3572 | struct nfs4_renewdata *data = calldata; |
3573 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3574 | |
0851de06 AB |
3575 | if (atomic_read(&clp->cl_count) > 1) |
3576 | nfs4_schedule_state_renewal(clp); | |
3577 | nfs_put_client(clp); | |
9bc4e3ca | 3578 | kfree(data); |
dc96aef9 AB |
3579 | } |
3580 | ||
9bc4e3ca | 3581 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3582 | { |
9bc4e3ca CL |
3583 | struct nfs4_renewdata *data = calldata; |
3584 | struct nfs_client *clp = data->client; | |
3585 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3586 | |
3587 | if (task->tk_status < 0) { | |
95baa25c | 3588 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
3589 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
3590 | return; | |
3591 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 3592 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
3593 | return; |
3594 | } | |
3595 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 3596 | } |
452e9352 | 3597 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3598 | } |
3599 | ||
963d8fe5 TM |
3600 | static const struct rpc_call_ops nfs4_renew_ops = { |
3601 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3602 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3603 | }; |
3604 | ||
2f60ea6b | 3605 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
3606 | { |
3607 | struct rpc_message msg = { | |
3608 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3609 | .rpc_argp = clp, | |
b4454fe1 | 3610 | .rpc_cred = cred, |
1da177e4 | 3611 | }; |
9bc4e3ca | 3612 | struct nfs4_renewdata *data; |
1da177e4 | 3613 | |
2f60ea6b TM |
3614 | if (renew_flags == 0) |
3615 | return 0; | |
0851de06 AB |
3616 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3617 | return -EIO; | |
b569ad34 | 3618 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
3619 | if (data == NULL) |
3620 | return -ENOMEM; | |
3621 | data->client = clp; | |
3622 | data->timestamp = jiffies; | |
1da177e4 | 3623 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, |
9bc4e3ca | 3624 | &nfs4_renew_ops, data); |
1da177e4 LT |
3625 | } |
3626 | ||
8534d4ec | 3627 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3628 | { |
3629 | struct rpc_message msg = { | |
3630 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3631 | .rpc_argp = clp, | |
b4454fe1 | 3632 | .rpc_cred = cred, |
1da177e4 LT |
3633 | }; |
3634 | unsigned long now = jiffies; | |
3635 | int status; | |
3636 | ||
3637 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3638 | if (status < 0) | |
3639 | return status; | |
452e9352 | 3640 | do_renew_lease(clp, now); |
1da177e4 LT |
3641 | return 0; |
3642 | } | |
3643 | ||
aa1870af BF |
3644 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3645 | { | |
3646 | return (server->caps & NFS_CAP_ACLS) | |
3647 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3648 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3649 | } | |
3650 | ||
21f498c2 TM |
3651 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that |
3652 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on | |
aa1870af BF |
3653 | * the stack. |
3654 | */ | |
21f498c2 | 3655 | #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) |
aa1870af | 3656 | |
e9e3d724 NH |
3657 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
3658 | struct page **pages, unsigned int *pgbase) | |
3659 | { | |
3660 | struct page *newpage, **spages; | |
3661 | int rc = 0; | |
3662 | size_t len; | |
3663 | spages = pages; | |
3664 | ||
3665 | do { | |
21f498c2 | 3666 | len = min_t(size_t, PAGE_SIZE, buflen); |
e9e3d724 NH |
3667 | newpage = alloc_page(GFP_KERNEL); |
3668 | ||
3669 | if (newpage == NULL) | |
3670 | goto unwind; | |
3671 | memcpy(page_address(newpage), buf, len); | |
3672 | buf += len; | |
3673 | buflen -= len; | |
3674 | *pages++ = newpage; | |
3675 | rc++; | |
3676 | } while (buflen != 0); | |
3677 | ||
3678 | return rc; | |
3679 | ||
3680 | unwind: | |
3681 | for(; rc > 0; rc--) | |
3682 | __free_page(spages[rc-1]); | |
3683 | return -ENOMEM; | |
3684 | } | |
3685 | ||
e50a1c2e BF |
3686 | struct nfs4_cached_acl { |
3687 | int cached; | |
3688 | size_t len; | |
3e9d4154 | 3689 | char data[0]; |
e50a1c2e BF |
3690 | }; |
3691 | ||
3692 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3693 | { | |
3694 | struct nfs_inode *nfsi = NFS_I(inode); | |
3695 | ||
3696 | spin_lock(&inode->i_lock); | |
3697 | kfree(nfsi->nfs4_acl); | |
3698 | nfsi->nfs4_acl = acl; | |
3699 | spin_unlock(&inode->i_lock); | |
3700 | } | |
3701 | ||
3702 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3703 | { | |
3704 | nfs4_set_cached_acl(inode, NULL); | |
3705 | } | |
3706 | ||
3707 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3708 | { | |
3709 | struct nfs_inode *nfsi = NFS_I(inode); | |
3710 | struct nfs4_cached_acl *acl; | |
3711 | int ret = -ENOENT; | |
3712 | ||
3713 | spin_lock(&inode->i_lock); | |
3714 | acl = nfsi->nfs4_acl; | |
3715 | if (acl == NULL) | |
3716 | goto out; | |
3717 | if (buf == NULL) /* user is just asking for length */ | |
3718 | goto out_len; | |
3719 | if (acl->cached == 0) | |
3720 | goto out; | |
3721 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3722 | if (acl->len > buflen) | |
3723 | goto out; | |
3724 | memcpy(buf, acl->data, acl->len); | |
3725 | out_len: | |
3726 | ret = acl->len; | |
3727 | out: | |
3728 | spin_unlock(&inode->i_lock); | |
3729 | return ret; | |
3730 | } | |
3731 | ||
5794d21e | 3732 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
3733 | { |
3734 | struct nfs4_cached_acl *acl; | |
b291f1b1 | 3735 | size_t buflen = sizeof(*acl) + acl_len; |
e50a1c2e | 3736 | |
1f1ea6c2 | 3737 | if (buflen <= PAGE_SIZE) { |
b291f1b1 | 3738 | acl = kmalloc(buflen, GFP_KERNEL); |
e50a1c2e BF |
3739 | if (acl == NULL) |
3740 | goto out; | |
3741 | acl->cached = 1; | |
5794d21e | 3742 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
3743 | } else { |
3744 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3745 | if (acl == NULL) | |
3746 | goto out; | |
3747 | acl->cached = 0; | |
3748 | } | |
3749 | acl->len = acl_len; | |
3750 | out: | |
3751 | nfs4_set_cached_acl(inode, acl); | |
3752 | } | |
3753 | ||
bf118a34 AA |
3754 | /* |
3755 | * The getxattr API returns the required buffer length when called with a | |
3756 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
3757 | * the required buf. On a NULL buf, we send a page of data to the server | |
3758 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
3759 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
3760 | * the cache. If not so, we throw away the page, and cache the required | |
3761 | * length. The next getxattr call will then produce another round trip to | |
3762 | * the server, this time with the input buf of the required size. | |
3763 | */ | |
16b4289c | 3764 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3765 | { |
bf118a34 | 3766 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
3767 | struct nfs_getaclargs args = { |
3768 | .fh = NFS_FH(inode), | |
3769 | .acl_pages = pages, | |
3770 | .acl_len = buflen, | |
3771 | }; | |
663c79b3 BH |
3772 | struct nfs_getaclres res = { |
3773 | .acl_len = buflen, | |
3774 | }; | |
aa1870af BF |
3775 | struct rpc_message msg = { |
3776 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3777 | .rpc_argp = &args, | |
663c79b3 | 3778 | .rpc_resp = &res, |
aa1870af | 3779 | }; |
21f498c2 TM |
3780 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
3781 | int ret = -ENOMEM, i; | |
aa1870af | 3782 | |
bf118a34 AA |
3783 | /* As long as we're doing a round trip to the server anyway, |
3784 | * let's be prepared for a page of acl data. */ | |
3785 | if (npages == 0) | |
3786 | npages = 1; | |
21f498c2 TM |
3787 | if (npages > ARRAY_SIZE(pages)) |
3788 | return -ERANGE; | |
5a006899 | 3789 | |
bf118a34 AA |
3790 | for (i = 0; i < npages; i++) { |
3791 | pages[i] = alloc_page(GFP_KERNEL); | |
3792 | if (!pages[i]) | |
3793 | goto out_free; | |
e50a1c2e | 3794 | } |
5a006899 SP |
3795 | |
3796 | /* for decoding across pages */ | |
3797 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
3798 | if (!res.acl_scratch) | |
3799 | goto out_free; | |
3800 | ||
bf118a34 AA |
3801 | args.acl_len = npages * PAGE_SIZE; |
3802 | args.acl_pgbase = 0; | |
5a006899 | 3803 | |
de040bec | 3804 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
3805 | __func__, buf, buflen, npages, args.acl_len); |
3806 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
3807 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
3808 | if (ret) |
3809 | goto out_free; | |
bf118a34 | 3810 | |
1f1ea6c2 TM |
3811 | /* Handle the case where the passed-in buffer is too short */ |
3812 | if (res.acl_flags & NFS4_ACL_TRUNC) { | |
3813 | /* Did the user only issue a request for the acl length? */ | |
3814 | if (buf == NULL) | |
3815 | goto out_ok; | |
e50a1c2e | 3816 | ret = -ERANGE; |
1f1ea6c2 | 3817 | goto out_free; |
e50a1c2e | 3818 | } |
1f1ea6c2 TM |
3819 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len); |
3820 | if (buf) | |
3821 | _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len); | |
3822 | out_ok: | |
3823 | ret = res.acl_len; | |
e50a1c2e | 3824 | out_free: |
bf118a34 AA |
3825 | for (i = 0; i < npages; i++) |
3826 | if (pages[i]) | |
3827 | __free_page(pages[i]); | |
331818f1 TM |
3828 | if (res.acl_scratch) |
3829 | __free_page(res.acl_scratch); | |
aa1870af BF |
3830 | return ret; |
3831 | } | |
3832 | ||
16b4289c TM |
3833 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
3834 | { | |
3835 | struct nfs4_exception exception = { }; | |
3836 | ssize_t ret; | |
3837 | do { | |
3838 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
3839 | if (ret >= 0) | |
3840 | break; | |
3841 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
3842 | } while (exception.retry); | |
3843 | return ret; | |
3844 | } | |
3845 | ||
e50a1c2e BF |
3846 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
3847 | { | |
3848 | struct nfs_server *server = NFS_SERVER(inode); | |
3849 | int ret; | |
3850 | ||
3851 | if (!nfs4_server_supports_acls(server)) | |
3852 | return -EOPNOTSUPP; | |
3853 | ret = nfs_revalidate_inode(server, inode); | |
3854 | if (ret < 0) | |
3855 | return ret; | |
08a22b39 AK |
3856 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
3857 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
3858 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
3859 | if (ret != -ENOENT) | |
bf118a34 AA |
3860 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
3861 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
3862 | return ret; |
3863 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
3864 | } | |
3865 | ||
16b4289c | 3866 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
3867 | { |
3868 | struct nfs_server *server = NFS_SERVER(inode); | |
3869 | struct page *pages[NFS4ACL_MAXPAGES]; | |
3870 | struct nfs_setaclargs arg = { | |
3871 | .fh = NFS_FH(inode), | |
3872 | .acl_pages = pages, | |
3873 | .acl_len = buflen, | |
3874 | }; | |
73c403a9 | 3875 | struct nfs_setaclres res; |
4b580ee3 BF |
3876 | struct rpc_message msg = { |
3877 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
3878 | .rpc_argp = &arg, | |
73c403a9 | 3879 | .rpc_resp = &res, |
4b580ee3 | 3880 | }; |
21f498c2 | 3881 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
e9e3d724 | 3882 | int ret, i; |
4b580ee3 BF |
3883 | |
3884 | if (!nfs4_server_supports_acls(server)) | |
3885 | return -EOPNOTSUPP; | |
21f498c2 TM |
3886 | if (npages > ARRAY_SIZE(pages)) |
3887 | return -ERANGE; | |
e9e3d724 NH |
3888 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
3889 | if (i < 0) | |
3890 | return i; | |
57ec14c5 | 3891 | nfs4_inode_return_delegation(inode); |
7c513058 | 3892 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
3893 | |
3894 | /* | |
3895 | * Free each page after tx, so the only ref left is | |
3896 | * held by the network stack | |
3897 | */ | |
3898 | for (; i > 0; i--) | |
3899 | put_page(pages[i-1]); | |
3900 | ||
08a22b39 AK |
3901 | /* |
3902 | * Acl update can result in inode attribute update. | |
3903 | * so mark the attribute cache invalid. | |
3904 | */ | |
3905 | spin_lock(&inode->i_lock); | |
3906 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
3907 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
3908 | nfs_access_zap_cache(inode); |
3909 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
3910 | return ret; |
3911 | } | |
3912 | ||
16b4289c TM |
3913 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
3914 | { | |
3915 | struct nfs4_exception exception = { }; | |
3916 | int err; | |
3917 | do { | |
3918 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3919 | __nfs4_proc_set_acl(inode, buf, buflen), | |
3920 | &exception); | |
3921 | } while (exception.retry); | |
3922 | return err; | |
3923 | } | |
3924 | ||
1da177e4 | 3925 | static int |
aa5190d0 | 3926 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 3927 | { |
aa5190d0 TM |
3928 | struct nfs_client *clp = server->nfs_client; |
3929 | ||
3930 | if (task->tk_status >= 0) | |
1da177e4 LT |
3931 | return 0; |
3932 | switch(task->tk_status) { | |
a1d0b5ee | 3933 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
3934 | case -NFS4ERR_ADMIN_REVOKED: |
3935 | case -NFS4ERR_BAD_STATEID: | |
14977489 TM |
3936 | if (state == NULL) |
3937 | break; | |
3938 | nfs_remove_bad_delegation(state->inode); | |
9e33bed5 TM |
3939 | case -NFS4ERR_OPENMODE: |
3940 | if (state == NULL) | |
3941 | break; | |
0400a6b0 TM |
3942 | nfs4_schedule_stateid_recovery(server, state); |
3943 | goto wait_on_recovery; | |
0ced63d1 TM |
3944 | case -NFS4ERR_EXPIRED: |
3945 | if (state != NULL) | |
3946 | nfs4_schedule_stateid_recovery(server, state); | |
1da177e4 | 3947 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 3948 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
3949 | nfs4_schedule_lease_recovery(clp); |
3950 | goto wait_on_recovery; | |
4745e315 AA |
3951 | #if defined(CONFIG_NFS_V4_1) |
3952 | case -NFS4ERR_BADSESSION: | |
3953 | case -NFS4ERR_BADSLOT: | |
3954 | case -NFS4ERR_BAD_HIGH_SLOT: | |
3955 | case -NFS4ERR_DEADSESSION: | |
3956 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
3957 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
3958 | case -NFS4ERR_SEQ_MISORDERED: | |
3959 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
3960 | task->tk_status); | |
9f594791 | 3961 | nfs4_schedule_session_recovery(clp->cl_session, task->tk_status); |
4745e315 AA |
3962 | task->tk_status = 0; |
3963 | return -EAGAIN; | |
3964 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 3965 | case -NFS4ERR_DELAY: |
aa5190d0 | 3966 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 3967 | case -NFS4ERR_GRACE: |
2c643488 | 3968 | case -EKEYEXPIRED: |
1da177e4 LT |
3969 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
3970 | task->tk_status = 0; | |
3971 | return -EAGAIN; | |
a8a4ae3a | 3972 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
3973 | case -NFS4ERR_OLD_STATEID: |
3974 | task->tk_status = 0; | |
3975 | return -EAGAIN; | |
3976 | } | |
3977 | task->tk_status = nfs4_map_errors(task->tk_status); | |
3978 | return 0; | |
0400a6b0 | 3979 | wait_on_recovery: |
a2c0b9e2 | 3980 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
3981 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
3982 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
3983 | task->tk_status = 0; | |
3984 | return -EAGAIN; | |
1da177e4 LT |
3985 | } |
3986 | ||
f092075d CL |
3987 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
3988 | nfs4_verifier *bootverf) | |
cd93710e CL |
3989 | { |
3990 | __be32 verf[2]; | |
3991 | ||
2c820d9a CL |
3992 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
3993 | /* An impossible timestamp guarantees this value | |
3994 | * will never match a generated boot time. */ | |
3995 | verf[0] = 0; | |
3996 | verf[1] = (__be32)(NSEC_PER_SEC + 1); | |
3997 | } else { | |
f092075d CL |
3998 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
3999 | verf[0] = (__be32)nn->boot_time.tv_sec; | |
4000 | verf[1] = (__be32)nn->boot_time.tv_nsec; | |
2c820d9a | 4001 | } |
cd93710e CL |
4002 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
4003 | } | |
4004 | ||
e984a55a CL |
4005 | static unsigned int |
4006 | nfs4_init_nonuniform_client_string(const struct nfs_client *clp, | |
4007 | char *buf, size_t len) | |
4008 | { | |
4009 | unsigned int result; | |
4010 | ||
4011 | rcu_read_lock(); | |
4012 | result = scnprintf(buf, len, "Linux NFSv4.0 %s/%s %s", | |
4013 | clp->cl_ipaddr, | |
4014 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4015 | RPC_DISPLAY_ADDR), | |
4016 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4017 | RPC_DISPLAY_PROTO)); | |
4018 | rcu_read_unlock(); | |
4019 | return result; | |
4020 | } | |
4021 | ||
4022 | static unsigned int | |
4023 | nfs4_init_uniform_client_string(const struct nfs_client *clp, | |
4024 | char *buf, size_t len) | |
4025 | { | |
6f2ea7f2 CL |
4026 | char *nodename = clp->cl_rpcclient->cl_nodename; |
4027 | ||
4028 | if (nfs4_client_id_uniquifier[0] != '\0') | |
4029 | nodename = nfs4_client_id_uniquifier; | |
e984a55a CL |
4030 | return scnprintf(buf, len, "Linux NFSv%u.%u %s", |
4031 | clp->rpc_ops->version, clp->cl_minorversion, | |
6f2ea7f2 | 4032 | nodename); |
e984a55a CL |
4033 | } |
4034 | ||
6bbb4ae8 CL |
4035 | /** |
4036 | * nfs4_proc_setclientid - Negotiate client ID | |
4037 | * @clp: state data structure | |
4038 | * @program: RPC program for NFSv4 callback service | |
4039 | * @port: IP port number for NFS4 callback service | |
4040 | * @cred: RPC credential to use for this call | |
4041 | * @res: where to place the result | |
4042 | * | |
4043 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4044 | */ | |
bb8b27e5 TM |
4045 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
4046 | unsigned short port, struct rpc_cred *cred, | |
4047 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
4048 | { |
4049 | nfs4_verifier sc_verifier; | |
4050 | struct nfs4_setclientid setclientid = { | |
4051 | .sc_verifier = &sc_verifier, | |
4052 | .sc_prog = program, | |
f4eecd5d | 4053 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
4054 | }; |
4055 | struct rpc_message msg = { | |
4056 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
4057 | .rpc_argp = &setclientid, | |
bb8b27e5 | 4058 | .rpc_resp = res, |
286d7d6a | 4059 | .rpc_cred = cred, |
1da177e4 | 4060 | }; |
6bbb4ae8 | 4061 | int status; |
1da177e4 | 4062 | |
de734831 | 4063 | /* nfs_client_id4 */ |
f092075d | 4064 | nfs4_init_boot_verifier(clp, &sc_verifier); |
e984a55a CL |
4065 | if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags)) |
4066 | setclientid.sc_name_len = | |
4067 | nfs4_init_uniform_client_string(clp, | |
4068 | setclientid.sc_name, | |
4069 | sizeof(setclientid.sc_name)); | |
4070 | else | |
4071 | setclientid.sc_name_len = | |
4072 | nfs4_init_nonuniform_client_string(clp, | |
4073 | setclientid.sc_name, | |
4074 | sizeof(setclientid.sc_name)); | |
de734831 | 4075 | /* cb_client4 */ |
e984a55a | 4076 | rcu_read_lock(); |
de734831 | 4077 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, |
d4d3c507 CL |
4078 | sizeof(setclientid.sc_netid), |
4079 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4080 | RPC_DISPLAY_NETID)); | |
de734831 CL |
4081 | rcu_read_unlock(); |
4082 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, | |
d4d3c507 | 4083 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
4084 | clp->cl_ipaddr, port >> 8, port & 255); |
4085 | ||
6bbb4ae8 CL |
4086 | dprintk("NFS call setclientid auth=%s, '%.*s'\n", |
4087 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4088 | setclientid.sc_name_len, setclientid.sc_name); | |
4089 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
4090 | dprintk("NFS reply setclientid: %d\n", status); | |
4091 | return status; | |
1da177e4 LT |
4092 | } |
4093 | ||
6bbb4ae8 CL |
4094 | /** |
4095 | * nfs4_proc_setclientid_confirm - Confirm client ID | |
4096 | * @clp: state data structure | |
4097 | * @res: result of a previous SETCLIENTID | |
4098 | * @cred: RPC credential to use for this call | |
4099 | * | |
4100 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4101 | */ | |
fd954ae1 | 4102 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
4103 | struct nfs4_setclientid_res *arg, |
4104 | struct rpc_cred *cred) | |
1da177e4 LT |
4105 | { |
4106 | struct nfs_fsinfo fsinfo; | |
4107 | struct rpc_message msg = { | |
4108 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 4109 | .rpc_argp = arg, |
1da177e4 | 4110 | .rpc_resp = &fsinfo, |
286d7d6a | 4111 | .rpc_cred = cred, |
1da177e4 LT |
4112 | }; |
4113 | unsigned long now; | |
4114 | int status; | |
4115 | ||
6bbb4ae8 CL |
4116 | dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", |
4117 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4118 | clp->cl_clientid); | |
1da177e4 | 4119 | now = jiffies; |
1bd714f2 | 4120 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
4121 | if (status == 0) { |
4122 | spin_lock(&clp->cl_lock); | |
4123 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
4124 | clp->cl_last_renewal = now; | |
4125 | spin_unlock(&clp->cl_lock); | |
4126 | } | |
6bbb4ae8 | 4127 | dprintk("NFS reply setclientid_confirm: %d\n", status); |
1da177e4 LT |
4128 | return status; |
4129 | } | |
4130 | ||
fe650407 TM |
4131 | struct nfs4_delegreturndata { |
4132 | struct nfs4_delegreturnargs args; | |
fa178f29 | 4133 | struct nfs4_delegreturnres res; |
fe650407 TM |
4134 | struct nfs_fh fh; |
4135 | nfs4_stateid stateid; | |
26e976a8 | 4136 | unsigned long timestamp; |
fa178f29 | 4137 | struct nfs_fattr fattr; |
fe650407 TM |
4138 | int rpc_status; |
4139 | }; | |
4140 | ||
fe650407 TM |
4141 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
4142 | { | |
4143 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 4144 | |
14516c3a TM |
4145 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4146 | return; | |
938e1010 | 4147 | |
79708861 RL |
4148 | switch (task->tk_status) { |
4149 | case -NFS4ERR_STALE_STATEID: | |
4150 | case -NFS4ERR_EXPIRED: | |
4151 | case 0: | |
fa178f29 | 4152 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
4153 | break; |
4154 | default: | |
4155 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
4156 | -EAGAIN) { | |
d00c5d43 | 4157 | rpc_restart_call_prepare(task); |
79708861 RL |
4158 | return; |
4159 | } | |
4160 | } | |
4161 | data->rpc_status = task->tk_status; | |
fe650407 TM |
4162 | } |
4163 | ||
4164 | static void nfs4_delegreturn_release(void *calldata) | |
4165 | { | |
fe650407 TM |
4166 | kfree(calldata); |
4167 | } | |
4168 | ||
938e1010 AA |
4169 | #if defined(CONFIG_NFS_V4_1) |
4170 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
4171 | { | |
4172 | struct nfs4_delegreturndata *d_data; | |
4173 | ||
4174 | d_data = (struct nfs4_delegreturndata *)data; | |
4175 | ||
d9afbd1b TM |
4176 | nfs4_setup_sequence(d_data->res.server, |
4177 | &d_data->args.seq_args, | |
4178 | &d_data->res.seq_res, | |
4179 | task); | |
938e1010 AA |
4180 | } |
4181 | #endif /* CONFIG_NFS_V4_1 */ | |
4182 | ||
c8d149f3 | 4183 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
4184 | #if defined(CONFIG_NFS_V4_1) |
4185 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
4186 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
4187 | .rpc_call_done = nfs4_delegreturn_done, |
4188 | .rpc_release = nfs4_delegreturn_release, | |
4189 | }; | |
4190 | ||
e6f81075 | 4191 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
4192 | { |
4193 | struct nfs4_delegreturndata *data; | |
fa178f29 | 4194 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 4195 | struct rpc_task *task; |
5138fde0 TM |
4196 | struct rpc_message msg = { |
4197 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
4198 | .rpc_cred = cred, | |
4199 | }; | |
c970aa85 TM |
4200 | struct rpc_task_setup task_setup_data = { |
4201 | .rpc_client = server->client, | |
5138fde0 | 4202 | .rpc_message = &msg, |
c970aa85 TM |
4203 | .callback_ops = &nfs4_delegreturn_ops, |
4204 | .flags = RPC_TASK_ASYNC, | |
4205 | }; | |
e6f81075 | 4206 | int status = 0; |
fe650407 | 4207 | |
8535b2be | 4208 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
4209 | if (data == NULL) |
4210 | return -ENOMEM; | |
9d12b216 | 4211 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
4212 | data->args.fhandle = &data->fh; |
4213 | data->args.stateid = &data->stateid; | |
9e907fec | 4214 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 4215 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 4216 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
4217 | data->res.fattr = &data->fattr; |
4218 | data->res.server = server; | |
5138fde0 | 4219 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 4220 | data->timestamp = jiffies; |
fe650407 TM |
4221 | data->rpc_status = 0; |
4222 | ||
c970aa85 | 4223 | task_setup_data.callback_data = data; |
1174dd1f TM |
4224 | msg.rpc_argp = &data->args; |
4225 | msg.rpc_resp = &data->res; | |
c970aa85 | 4226 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 4227 | if (IS_ERR(task)) |
fe650407 | 4228 | return PTR_ERR(task); |
e6f81075 TM |
4229 | if (!issync) |
4230 | goto out; | |
fe650407 | 4231 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
4232 | if (status != 0) |
4233 | goto out; | |
4234 | status = data->rpc_status; | |
e144cbcc TM |
4235 | if (status == 0) |
4236 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
4237 | else | |
4238 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 4239 | out: |
e6b3c4db | 4240 | rpc_put_task(task); |
fe650407 | 4241 | return status; |
1da177e4 LT |
4242 | } |
4243 | ||
e6f81075 | 4244 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
4245 | { |
4246 | struct nfs_server *server = NFS_SERVER(inode); | |
4247 | struct nfs4_exception exception = { }; | |
4248 | int err; | |
4249 | do { | |
e6f81075 | 4250 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
4251 | switch (err) { |
4252 | case -NFS4ERR_STALE_STATEID: | |
4253 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
4254 | case 0: |
4255 | return 0; | |
4256 | } | |
4257 | err = nfs4_handle_exception(server, err, &exception); | |
4258 | } while (exception.retry); | |
4259 | return err; | |
4260 | } | |
4261 | ||
4262 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
4263 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
4264 | ||
4265 | /* | |
4266 | * sleep, with exponential backoff, and retry the LOCK operation. | |
4267 | */ | |
4268 | static unsigned long | |
4269 | nfs4_set_lock_task_retry(unsigned long timeout) | |
4270 | { | |
d310310c | 4271 | freezable_schedule_timeout_killable(timeout); |
1da177e4 LT |
4272 | timeout <<= 1; |
4273 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
4274 | return NFS4_LOCK_MAXTIMEOUT; | |
4275 | return timeout; | |
4276 | } | |
4277 | ||
1da177e4 LT |
4278 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4279 | { | |
4280 | struct inode *inode = state->inode; | |
4281 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 4282 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 4283 | struct nfs_lockt_args arg = { |
1da177e4 | 4284 | .fh = NFS_FH(inode), |
911d1aaf | 4285 | .fl = request, |
1da177e4 | 4286 | }; |
911d1aaf TM |
4287 | struct nfs_lockt_res res = { |
4288 | .denied = request, | |
1da177e4 LT |
4289 | }; |
4290 | struct rpc_message msg = { | |
4291 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
4292 | .rpc_argp = &arg, | |
4293 | .rpc_resp = &res, | |
4294 | .rpc_cred = state->owner->so_cred, | |
4295 | }; | |
1da177e4 LT |
4296 | struct nfs4_lock_state *lsp; |
4297 | int status; | |
4298 | ||
911d1aaf | 4299 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
4300 | status = nfs4_set_lock_state(state, request); |
4301 | if (status != 0) | |
4302 | goto out; | |
4303 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 4304 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4305 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 4306 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
4307 | switch (status) { |
4308 | case 0: | |
4309 | request->fl_type = F_UNLCK; | |
4310 | break; | |
4311 | case -NFS4ERR_DENIED: | |
4312 | status = 0; | |
1da177e4 | 4313 | } |
70cc6487 | 4314 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 4315 | out: |
1da177e4 LT |
4316 | return status; |
4317 | } | |
4318 | ||
4319 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4320 | { | |
4321 | struct nfs4_exception exception = { }; | |
4322 | int err; | |
4323 | ||
4324 | do { | |
4325 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
4326 | _nfs4_proc_getlk(state, cmd, request), | |
4327 | &exception); | |
4328 | } while (exception.retry); | |
4329 | return err; | |
4330 | } | |
4331 | ||
4332 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
4333 | { | |
4334 | int res = 0; | |
4335 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
4336 | case FL_POSIX: | |
4337 | res = posix_lock_file_wait(file, fl); | |
4338 | break; | |
4339 | case FL_FLOCK: | |
4340 | res = flock_lock_file_wait(file, fl); | |
4341 | break; | |
4342 | default: | |
4343 | BUG(); | |
4344 | } | |
1da177e4 LT |
4345 | return res; |
4346 | } | |
4347 | ||
faf5f49c | 4348 | struct nfs4_unlockdata { |
911d1aaf TM |
4349 | struct nfs_locku_args arg; |
4350 | struct nfs_locku_res res; | |
faf5f49c TM |
4351 | struct nfs4_lock_state *lsp; |
4352 | struct nfs_open_context *ctx; | |
911d1aaf TM |
4353 | struct file_lock fl; |
4354 | const struct nfs_server *server; | |
26e976a8 | 4355 | unsigned long timestamp; |
faf5f49c TM |
4356 | }; |
4357 | ||
911d1aaf TM |
4358 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
4359 | struct nfs_open_context *ctx, | |
4360 | struct nfs4_lock_state *lsp, | |
4361 | struct nfs_seqid *seqid) | |
4362 | { | |
4363 | struct nfs4_unlockdata *p; | |
4364 | struct inode *inode = lsp->ls_state->inode; | |
4365 | ||
8535b2be | 4366 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
4367 | if (p == NULL) |
4368 | return NULL; | |
4369 | p->arg.fh = NFS_FH(inode); | |
4370 | p->arg.fl = &p->fl; | |
4371 | p->arg.seqid = seqid; | |
c1d51931 | 4372 | p->res.seqid = seqid; |
911d1aaf TM |
4373 | p->arg.stateid = &lsp->ls_stateid; |
4374 | p->lsp = lsp; | |
4375 | atomic_inc(&lsp->ls_count); | |
4376 | /* Ensure we don't close file until we're done freeing locks! */ | |
4377 | p->ctx = get_nfs_open_context(ctx); | |
4378 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4379 | p->server = NFS_SERVER(inode); | |
4380 | return p; | |
4381 | } | |
4382 | ||
06f814a3 | 4383 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 4384 | { |
963d8fe5 | 4385 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 4386 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
4387 | nfs4_put_lock_state(calldata->lsp); |
4388 | put_nfs_open_context(calldata->ctx); | |
4389 | kfree(calldata); | |
faf5f49c TM |
4390 | } |
4391 | ||
963d8fe5 | 4392 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 4393 | { |
963d8fe5 | 4394 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4395 | |
14516c3a TM |
4396 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
4397 | return; | |
faf5f49c TM |
4398 | switch (task->tk_status) { |
4399 | case 0: | |
f597c537 TM |
4400 | nfs4_stateid_copy(&calldata->lsp->ls_stateid, |
4401 | &calldata->res.stateid); | |
26e976a8 | 4402 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 4403 | break; |
9e33bed5 TM |
4404 | case -NFS4ERR_BAD_STATEID: |
4405 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
4406 | case -NFS4ERR_STALE_STATEID: |
4407 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
4408 | break; |
4409 | default: | |
9e33bed5 | 4410 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
d00c5d43 | 4411 | rpc_restart_call_prepare(task); |
faf5f49c | 4412 | } |
2b1bc308 | 4413 | nfs_release_seqid(calldata->arg.seqid); |
faf5f49c TM |
4414 | } |
4415 | ||
4ce70ada | 4416 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 4417 | { |
4ce70ada | 4418 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4419 | |
911d1aaf | 4420 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c | 4421 | return; |
795a88c9 | 4422 | if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) { |
963d8fe5 TM |
4423 | /* Note: exit _without_ running nfs4_locku_done */ |
4424 | task->tk_action = NULL; | |
faf5f49c TM |
4425 | return; |
4426 | } | |
26e976a8 | 4427 | calldata->timestamp = jiffies; |
035168ab | 4428 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 4429 | &calldata->arg.seq_args, |
2240a9e2 TM |
4430 | &calldata->res.seq_res, |
4431 | task) != 0) | |
4432 | nfs_release_seqid(calldata->arg.seqid); | |
faf5f49c TM |
4433 | } |
4434 | ||
963d8fe5 | 4435 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 4436 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 4437 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 4438 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
4439 | }; |
4440 | ||
a5d16a4d TM |
4441 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
4442 | struct nfs_open_context *ctx, | |
4443 | struct nfs4_lock_state *lsp, | |
4444 | struct nfs_seqid *seqid) | |
4445 | { | |
4446 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
4447 | struct rpc_message msg = { |
4448 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
4449 | .rpc_cred = ctx->cred, | |
4450 | }; | |
c970aa85 TM |
4451 | struct rpc_task_setup task_setup_data = { |
4452 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 4453 | .rpc_message = &msg, |
c970aa85 | 4454 | .callback_ops = &nfs4_locku_ops, |
101070ca | 4455 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4456 | .flags = RPC_TASK_ASYNC, |
4457 | }; | |
a5d16a4d | 4458 | |
137d6aca FF |
4459 | /* Ensure this is an unlock - when canceling a lock, the |
4460 | * canceled lock is passed in, and it won't be an unlock. | |
4461 | */ | |
4462 | fl->fl_type = F_UNLCK; | |
4463 | ||
a5d16a4d TM |
4464 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
4465 | if (data == NULL) { | |
4466 | nfs_free_seqid(seqid); | |
4467 | return ERR_PTR(-ENOMEM); | |
4468 | } | |
4469 | ||
9d12b216 | 4470 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4471 | msg.rpc_argp = &data->arg; |
4472 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4473 | task_setup_data.callback_data = data; |
4474 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
4475 | } |
4476 | ||
faf5f49c TM |
4477 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
4478 | { | |
19e03c57 | 4479 | struct nfs_inode *nfsi = NFS_I(state->inode); |
911d1aaf | 4480 | struct nfs_seqid *seqid; |
1da177e4 | 4481 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
4482 | struct rpc_task *task; |
4483 | int status = 0; | |
536ff0f8 | 4484 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 4485 | |
8d0a8a9d | 4486 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
4487 | /* Unlock _before_ we do the RPC call */ |
4488 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
4489 | down_read(&nfsi->rwsem); |
4490 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
4491 | up_read(&nfsi->rwsem); | |
9b073574 | 4492 | goto out; |
19e03c57 TM |
4493 | } |
4494 | up_read(&nfsi->rwsem); | |
8d0a8a9d | 4495 | if (status != 0) |
9b073574 TM |
4496 | goto out; |
4497 | /* Is this a delegated lock? */ | |
4498 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
4499 | goto out; | |
8d0a8a9d | 4500 | lsp = request->fl_u.nfs4_fl.owner; |
8535b2be | 4501 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 4502 | status = -ENOMEM; |
911d1aaf | 4503 | if (seqid == NULL) |
9b073574 | 4504 | goto out; |
cd3758e3 | 4505 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
4506 | status = PTR_ERR(task); |
4507 | if (IS_ERR(task)) | |
9b073574 | 4508 | goto out; |
a5d16a4d | 4509 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 4510 | rpc_put_task(task); |
9b073574 | 4511 | out: |
536ff0f8 | 4512 | request->fl_flags = fl_flags; |
1da177e4 LT |
4513 | return status; |
4514 | } | |
4515 | ||
a5d16a4d TM |
4516 | struct nfs4_lockdata { |
4517 | struct nfs_lock_args arg; | |
4518 | struct nfs_lock_res res; | |
4519 | struct nfs4_lock_state *lsp; | |
4520 | struct nfs_open_context *ctx; | |
4521 | struct file_lock fl; | |
26e976a8 | 4522 | unsigned long timestamp; |
a5d16a4d TM |
4523 | int rpc_status; |
4524 | int cancelled; | |
66179efe | 4525 | struct nfs_server *server; |
a5d16a4d TM |
4526 | }; |
4527 | ||
4528 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
4529 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
4530 | gfp_t gfp_mask) | |
1da177e4 | 4531 | { |
a5d16a4d TM |
4532 | struct nfs4_lockdata *p; |
4533 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 4534 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 4535 | |
8535b2be | 4536 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
4537 | if (p == NULL) |
4538 | return NULL; | |
4539 | ||
4540 | p->arg.fh = NFS_FH(inode); | |
4541 | p->arg.fl = &p->fl; | |
8535b2be | 4542 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4543 | if (p->arg.open_seqid == NULL) |
4544 | goto out_free; | |
8535b2be | 4545 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4546 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4547 | goto out_free_seqid; |
a5d16a4d | 4548 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4549 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 4550 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4551 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 4552 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4553 | p->lsp = lsp; |
66179efe | 4554 | p->server = server; |
a5d16a4d TM |
4555 | atomic_inc(&lsp->ls_count); |
4556 | p->ctx = get_nfs_open_context(ctx); | |
4557 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4558 | return p; | |
2f74c0a0 TM |
4559 | out_free_seqid: |
4560 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4561 | out_free: |
4562 | kfree(p); | |
4563 | return NULL; | |
4564 | } | |
4565 | ||
4566 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4567 | { | |
4568 | struct nfs4_lockdata *data = calldata; | |
4569 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4570 | |
3110ff80 | 4571 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
4572 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
4573 | return; | |
a5d16a4d TM |
4574 | /* Do we need to do an open_to_lock_owner? */ |
4575 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 | 4576 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
2240a9e2 | 4577 | goto out_release_lock_seqid; |
a5d16a4d TM |
4578 | data->arg.open_stateid = &state->stateid; |
4579 | data->arg.new_lock_owner = 1; | |
c1d51931 | 4580 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4581 | } else |
4582 | data->arg.new_lock_owner = 0; | |
26e976a8 | 4583 | data->timestamp = jiffies; |
035168ab TM |
4584 | if (nfs4_setup_sequence(data->server, |
4585 | &data->arg.seq_args, | |
2240a9e2 | 4586 | &data->res.seq_res, |
d9afbd1b | 4587 | task) == 0) |
66179efe | 4588 | return; |
2240a9e2 TM |
4589 | nfs_release_seqid(data->arg.open_seqid); |
4590 | out_release_lock_seqid: | |
4591 | nfs_release_seqid(data->arg.lock_seqid); | |
4592 | dprintk("%s: done!, ret = %d\n", __func__, task->tk_status); | |
a5d16a4d TM |
4593 | } |
4594 | ||
b257957e AB |
4595 | static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata) |
4596 | { | |
4597 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
4598 | nfs4_lock_prepare(task, calldata); | |
4599 | } | |
4600 | ||
a5d16a4d TM |
4601 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4602 | { | |
4603 | struct nfs4_lockdata *data = calldata; | |
4604 | ||
3110ff80 | 4605 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4606 | |
14516c3a TM |
4607 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4608 | return; | |
66179efe | 4609 | |
a5d16a4d | 4610 | data->rpc_status = task->tk_status; |
a5d16a4d | 4611 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4612 | if (data->rpc_status == 0) |
4613 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4614 | else | |
4615 | goto out; | |
4616 | } | |
4617 | if (data->rpc_status == 0) { | |
f597c537 | 4618 | nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid); |
795a88c9 | 4619 | set_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags); |
3d4ff43d | 4620 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 4621 | } |
a5d16a4d | 4622 | out: |
3110ff80 | 4623 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4624 | } |
4625 | ||
4626 | static void nfs4_lock_release(void *calldata) | |
4627 | { | |
4628 | struct nfs4_lockdata *data = calldata; | |
4629 | ||
3110ff80 | 4630 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4631 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4632 | if (data->cancelled != 0) { |
4633 | struct rpc_task *task; | |
4634 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4635 | data->arg.lock_seqid); | |
4636 | if (!IS_ERR(task)) | |
bf294b41 | 4637 | rpc_put_task_async(task); |
3110ff80 | 4638 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4639 | } else |
4640 | nfs_free_seqid(data->arg.lock_seqid); | |
4641 | nfs4_put_lock_state(data->lsp); | |
4642 | put_nfs_open_context(data->ctx); | |
4643 | kfree(data); | |
3110ff80 | 4644 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4645 | } |
4646 | ||
4647 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4648 | .rpc_call_prepare = nfs4_lock_prepare, | |
4649 | .rpc_call_done = nfs4_lock_done, | |
4650 | .rpc_release = nfs4_lock_release, | |
4651 | }; | |
4652 | ||
b257957e AB |
4653 | static const struct rpc_call_ops nfs4_recover_lock_ops = { |
4654 | .rpc_call_prepare = nfs4_recover_lock_prepare, | |
4655 | .rpc_call_done = nfs4_lock_done, | |
4656 | .rpc_release = nfs4_lock_release, | |
4657 | }; | |
4658 | ||
2bee72a6 TM |
4659 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4660 | { | |
2bee72a6 TM |
4661 | switch (error) { |
4662 | case -NFS4ERR_ADMIN_REVOKED: | |
4663 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 4664 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 | 4665 | if (new_lock_owner != 0 || |
795a88c9 | 4666 | test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0) |
ecac799a | 4667 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
4668 | break; |
4669 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 4670 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
4671 | case -NFS4ERR_EXPIRED: |
4672 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
4673 | }; |
4674 | } | |
4675 | ||
afe6c27c | 4676 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4677 | { |
4678 | struct nfs4_lockdata *data; | |
4679 | struct rpc_task *task; | |
5138fde0 TM |
4680 | struct rpc_message msg = { |
4681 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4682 | .rpc_cred = state->owner->so_cred, | |
4683 | }; | |
c970aa85 TM |
4684 | struct rpc_task_setup task_setup_data = { |
4685 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4686 | .rpc_message = &msg, |
c970aa85 | 4687 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4688 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4689 | .flags = RPC_TASK_ASYNC, |
4690 | }; | |
a5d16a4d TM |
4691 | int ret; |
4692 | ||
3110ff80 | 4693 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4694 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4695 | fl->fl_u.nfs4_fl.owner, |
4696 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4697 | if (data == NULL) |
4698 | return -ENOMEM; | |
4699 | if (IS_SETLKW(cmd)) | |
4700 | data->arg.block = 1; | |
b257957e AB |
4701 | if (recovery_type > NFS_LOCK_NEW) { |
4702 | if (recovery_type == NFS_LOCK_RECLAIM) | |
afe6c27c | 4703 | data->arg.reclaim = NFS_LOCK_RECLAIM; |
b257957e AB |
4704 | task_setup_data.callback_ops = &nfs4_recover_lock_ops; |
4705 | } | |
9d12b216 | 4706 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4707 | msg.rpc_argp = &data->arg; |
4708 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4709 | task_setup_data.callback_data = data; |
4710 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 4711 | if (IS_ERR(task)) |
a5d16a4d | 4712 | return PTR_ERR(task); |
a5d16a4d TM |
4713 | ret = nfs4_wait_for_completion_rpc_task(task); |
4714 | if (ret == 0) { | |
4715 | ret = data->rpc_status; | |
2bee72a6 TM |
4716 | if (ret) |
4717 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4718 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4719 | } else |
4720 | data->cancelled = 1; | |
e6b3c4db | 4721 | rpc_put_task(task); |
3110ff80 | 4722 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4723 | return ret; |
1da177e4 LT |
4724 | } |
4725 | ||
4726 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4727 | { | |
202b50dc | 4728 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4729 | struct nfs4_exception exception = { |
4730 | .inode = state->inode, | |
4731 | }; | |
202b50dc TM |
4732 | int err; |
4733 | ||
4734 | do { | |
42a2d13e TM |
4735 | /* Cache the lock if possible... */ |
4736 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4737 | return 0; | |
afe6c27c | 4738 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 4739 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
4740 | break; |
4741 | nfs4_handle_exception(server, err, &exception); | |
4742 | } while (exception.retry); | |
4743 | return err; | |
1da177e4 LT |
4744 | } |
4745 | ||
4746 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4747 | { | |
202b50dc | 4748 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4749 | struct nfs4_exception exception = { |
4750 | .inode = state->inode, | |
4751 | }; | |
202b50dc TM |
4752 | int err; |
4753 | ||
6bfc93ef TM |
4754 | err = nfs4_set_lock_state(state, request); |
4755 | if (err != 0) | |
4756 | return err; | |
202b50dc | 4757 | do { |
42a2d13e TM |
4758 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4759 | return 0; | |
afe6c27c | 4760 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
4761 | switch (err) { |
4762 | default: | |
4763 | goto out; | |
4764 | case -NFS4ERR_GRACE: | |
4765 | case -NFS4ERR_DELAY: | |
4766 | nfs4_handle_exception(server, err, &exception); | |
4767 | err = 0; | |
4768 | } | |
202b50dc | 4769 | } while (exception.retry); |
a9ed2e25 | 4770 | out: |
202b50dc | 4771 | return err; |
1da177e4 LT |
4772 | } |
4773 | ||
f062eb6c | 4774 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd CL |
4775 | /** |
4776 | * nfs41_check_expired_locks - possibly free a lock stateid | |
4777 | * | |
4778 | * @state: NFSv4 state for an inode | |
4779 | * | |
4780 | * Returns NFS_OK if recovery for this stateid is now finished. | |
4781 | * Otherwise a negative NFS4ERR value is returned. | |
4782 | */ | |
b01dd1d8 | 4783 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 4784 | { |
eb64cf96 | 4785 | int status, ret = -NFS4ERR_BAD_STATEID; |
b01dd1d8 | 4786 | struct nfs4_lock_state *lsp; |
f062eb6c BS |
4787 | struct nfs_server *server = NFS_SERVER(state->inode); |
4788 | ||
b01dd1d8 | 4789 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
795a88c9 | 4790 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { |
b01dd1d8 BS |
4791 | status = nfs41_test_stateid(server, &lsp->ls_stateid); |
4792 | if (status != NFS_OK) { | |
3e60ffdd CL |
4793 | /* Free the stateid unless the server |
4794 | * informs us the stateid is unrecognized. */ | |
89af2739 CL |
4795 | if (status != -NFS4ERR_BAD_STATEID) |
4796 | nfs41_free_stateid(server, | |
4797 | &lsp->ls_stateid); | |
795a88c9 | 4798 | clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); |
b01dd1d8 BS |
4799 | ret = status; |
4800 | } | |
4801 | } | |
4802 | }; | |
4803 | ||
4804 | return ret; | |
4805 | } | |
4806 | ||
4807 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4808 | { | |
4809 | int status = NFS_OK; | |
4810 | ||
4811 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
4812 | status = nfs41_check_expired_locks(state); | |
eb64cf96 CL |
4813 | if (status != NFS_OK) |
4814 | status = nfs4_lock_expired(state, request); | |
4815 | return status; | |
f062eb6c BS |
4816 | } |
4817 | #endif | |
4818 | ||
1da177e4 LT |
4819 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4820 | { | |
19e03c57 | 4821 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 4822 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 4823 | int status = -ENOLCK; |
1da177e4 | 4824 | |
8e469ebd TM |
4825 | if ((fl_flags & FL_POSIX) && |
4826 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
4827 | goto out; | |
6bfc93ef | 4828 | /* Is this a delegated open? */ |
6bfc93ef TM |
4829 | status = nfs4_set_lock_state(state, request); |
4830 | if (status != 0) | |
4831 | goto out; | |
01c3b861 TM |
4832 | request->fl_flags |= FL_ACCESS; |
4833 | status = do_vfs_lock(request->fl_file, request); | |
4834 | if (status < 0) | |
4835 | goto out; | |
19e03c57 | 4836 | down_read(&nfsi->rwsem); |
01c3b861 | 4837 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 4838 | /* Yes: cache locks! */ |
01c3b861 | 4839 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
4840 | request->fl_flags = fl_flags & ~FL_SLEEP; |
4841 | status = do_vfs_lock(request->fl_file, request); | |
4842 | goto out_unlock; | |
01c3b861 | 4843 | } |
afe6c27c | 4844 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 4845 | if (status != 0) |
01c3b861 | 4846 | goto out_unlock; |
6bfc93ef | 4847 | /* Note: we always want to sleep here! */ |
01c3b861 | 4848 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 4849 | if (do_vfs_lock(request->fl_file, request) < 0) |
a030889a WAA |
4850 | printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " |
4851 | "manager!\n", __func__); | |
01c3b861 | 4852 | out_unlock: |
19e03c57 | 4853 | up_read(&nfsi->rwsem); |
01c3b861 TM |
4854 | out: |
4855 | request->fl_flags = fl_flags; | |
1da177e4 LT |
4856 | return status; |
4857 | } | |
4858 | ||
4859 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4860 | { | |
a1d0b5ee TM |
4861 | struct nfs4_exception exception = { |
4862 | .state = state, | |
05ffe24f | 4863 | .inode = state->inode, |
a1d0b5ee | 4864 | }; |
1da177e4 LT |
4865 | int err; |
4866 | ||
4867 | do { | |
965b5d67 TM |
4868 | err = _nfs4_proc_setlk(state, cmd, request); |
4869 | if (err == -NFS4ERR_DENIED) | |
4870 | err = -EAGAIN; | |
1da177e4 | 4871 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 4872 | err, &exception); |
1da177e4 LT |
4873 | } while (exception.retry); |
4874 | return err; | |
4875 | } | |
4876 | ||
4877 | static int | |
4878 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
4879 | { | |
4880 | struct nfs_open_context *ctx; | |
4881 | struct nfs4_state *state; | |
4882 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
4883 | int status; | |
4884 | ||
4885 | /* verify open state */ | |
cd3758e3 | 4886 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
4887 | state = ctx->state; |
4888 | ||
4889 | if (request->fl_start < 0 || request->fl_end < 0) | |
4890 | return -EINVAL; | |
4891 | ||
d953126a TM |
4892 | if (IS_GETLK(cmd)) { |
4893 | if (state != NULL) | |
4894 | return nfs4_proc_getlk(state, F_GETLK, request); | |
4895 | return 0; | |
4896 | } | |
1da177e4 LT |
4897 | |
4898 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
4899 | return -EINVAL; | |
4900 | ||
d953126a TM |
4901 | if (request->fl_type == F_UNLCK) { |
4902 | if (state != NULL) | |
4903 | return nfs4_proc_unlck(state, cmd, request); | |
4904 | return 0; | |
4905 | } | |
1da177e4 | 4906 | |
d953126a TM |
4907 | if (state == NULL) |
4908 | return -ENOLCK; | |
55725513 TM |
4909 | /* |
4910 | * Don't rely on the VFS having checked the file open mode, | |
4911 | * since it won't do this for flock() locks. | |
4912 | */ | |
f44106e2 | 4913 | switch (request->fl_type) { |
55725513 TM |
4914 | case F_RDLCK: |
4915 | if (!(filp->f_mode & FMODE_READ)) | |
4916 | return -EBADF; | |
4917 | break; | |
4918 | case F_WRLCK: | |
4919 | if (!(filp->f_mode & FMODE_WRITE)) | |
4920 | return -EBADF; | |
4921 | } | |
4922 | ||
1da177e4 LT |
4923 | do { |
4924 | status = nfs4_proc_setlk(state, cmd, request); | |
4925 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
4926 | break; | |
4927 | timeout = nfs4_set_lock_task_retry(timeout); | |
4928 | status = -ERESTARTSYS; | |
4929 | if (signalled()) | |
4930 | break; | |
4931 | } while(status < 0); | |
1da177e4 LT |
4932 | return status; |
4933 | } | |
4934 | ||
888e694c TM |
4935 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
4936 | { | |
4937 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4938 | struct nfs4_exception exception = { }; | |
4939 | int err; | |
4940 | ||
4941 | err = nfs4_set_lock_state(state, fl); | |
4942 | if (err != 0) | |
4943 | goto out; | |
4944 | do { | |
afe6c27c | 4945 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
d5122201 TM |
4946 | switch (err) { |
4947 | default: | |
a030889a WAA |
4948 | printk(KERN_ERR "NFS: %s: unhandled error " |
4949 | "%d.\n", __func__, err); | |
d5122201 | 4950 | case 0: |
965b5d67 | 4951 | case -ESTALE: |
d5122201 TM |
4952 | goto out; |
4953 | case -NFS4ERR_EXPIRED: | |
0ced63d1 | 4954 | nfs4_schedule_stateid_recovery(server, state); |
d5122201 | 4955 | case -NFS4ERR_STALE_CLIENTID: |
965b5d67 | 4956 | case -NFS4ERR_STALE_STATEID: |
0400a6b0 TM |
4957 | nfs4_schedule_lease_recovery(server->nfs_client); |
4958 | goto out; | |
74e7bb73 RL |
4959 | case -NFS4ERR_BADSESSION: |
4960 | case -NFS4ERR_BADSLOT: | |
4961 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4962 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4963 | case -NFS4ERR_DEADSESSION: | |
9f594791 | 4964 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); |
d5122201 | 4965 | goto out; |
965b5d67 TM |
4966 | case -ERESTARTSYS: |
4967 | /* | |
4968 | * The show must go on: exit, but mark the | |
4969 | * stateid as needing recovery. | |
4970 | */ | |
a1d0b5ee | 4971 | case -NFS4ERR_DELEG_REVOKED: |
965b5d67 TM |
4972 | case -NFS4ERR_ADMIN_REVOKED: |
4973 | case -NFS4ERR_BAD_STATEID: | |
4974 | case -NFS4ERR_OPENMODE: | |
0400a6b0 | 4975 | nfs4_schedule_stateid_recovery(server, state); |
965b5d67 TM |
4976 | err = 0; |
4977 | goto out; | |
168667c4 TM |
4978 | case -EKEYEXPIRED: |
4979 | /* | |
4980 | * User RPCSEC_GSS context has expired. | |
4981 | * We cannot recover this stateid now, so | |
4982 | * skip it and allow recovery thread to | |
4983 | * proceed. | |
4984 | */ | |
4985 | err = 0; | |
4986 | goto out; | |
965b5d67 TM |
4987 | case -ENOMEM: |
4988 | case -NFS4ERR_DENIED: | |
4989 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
4990 | err = 0; | |
4991 | goto out; | |
d5122201 TM |
4992 | case -NFS4ERR_DELAY: |
4993 | break; | |
4994 | } | |
888e694c TM |
4995 | err = nfs4_handle_exception(server, err, &exception); |
4996 | } while (exception.retry); | |
4997 | out: | |
4998 | return err; | |
4999 | } | |
6b3b5496 | 5000 | |
cf470c3e TM |
5001 | struct nfs_release_lockowner_data { |
5002 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 5003 | struct nfs_server *server; |
cf470c3e TM |
5004 | struct nfs_release_lockowner_args args; |
5005 | }; | |
5006 | ||
d3c7b7cc TM |
5007 | static void nfs4_release_lockowner_release(void *calldata) |
5008 | { | |
cf470c3e | 5009 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 5010 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
5011 | kfree(calldata); |
5012 | } | |
5013 | ||
17280175 | 5014 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
d3c7b7cc TM |
5015 | .rpc_release = nfs4_release_lockowner_release, |
5016 | }; | |
5017 | ||
cf470c3e | 5018 | int nfs4_release_lockowner(struct nfs4_lock_state *lsp) |
d3c7b7cc TM |
5019 | { |
5020 | struct nfs_server *server = lsp->ls_state->owner->so_server; | |
cf470c3e | 5021 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
5022 | struct rpc_message msg = { |
5023 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
5024 | }; | |
5025 | ||
5026 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
cf470c3e TM |
5027 | return -EINVAL; |
5028 | data = kmalloc(sizeof(*data), GFP_NOFS); | |
5029 | if (!data) | |
5030 | return -ENOMEM; | |
5031 | data->lsp = lsp; | |
5ae67c4f | 5032 | data->server = server; |
cf470c3e TM |
5033 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
5034 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
5035 | data->args.lock_owner.s_dev = server->s_dev; | |
5036 | msg.rpc_argp = &data->args; | |
5037 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); | |
5038 | return 0; | |
d3c7b7cc TM |
5039 | } |
5040 | ||
aa1870af BF |
5041 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
5042 | ||
64c2ce8b AK |
5043 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
5044 | const void *buf, size_t buflen, | |
5045 | int flags, int type) | |
6b3b5496 | 5046 | { |
64c2ce8b AK |
5047 | if (strcmp(key, "") != 0) |
5048 | return -EINVAL; | |
4b580ee3 | 5049 | |
64c2ce8b | 5050 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5051 | } |
5052 | ||
64c2ce8b AK |
5053 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
5054 | void *buf, size_t buflen, int type) | |
6b3b5496 | 5055 | { |
64c2ce8b AK |
5056 | if (strcmp(key, "") != 0) |
5057 | return -EINVAL; | |
aa1870af | 5058 | |
64c2ce8b | 5059 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5060 | } |
5061 | ||
64c2ce8b AK |
5062 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
5063 | size_t list_len, const char *name, | |
5064 | size_t name_len, int type) | |
6b3b5496 | 5065 | { |
64c2ce8b | 5066 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 5067 | |
096455a2 BF |
5068 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
5069 | return 0; | |
64c2ce8b AK |
5070 | |
5071 | if (list && len <= list_len) | |
5072 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 5073 | return len; |
6b3b5496 BF |
5074 | } |
5075 | ||
533eb461 AA |
5076 | /* |
5077 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
5078 | */ | |
69aaaae1 TM |
5079 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
5080 | { | |
533eb461 AA |
5081 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
5082 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
5083 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 5084 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
5085 | return; |
5086 | ||
5087 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 5088 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
5089 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
5090 | fattr->nlink = 2; | |
5091 | } | |
5092 | ||
f05d147f BS |
5093 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5094 | const struct qstr *name, | |
5095 | struct nfs4_fs_locations *fs_locations, | |
5096 | struct page *page) | |
683b57b4 TM |
5097 | { |
5098 | struct nfs_server *server = NFS_SERVER(dir); | |
5099 | u32 bitmask[2] = { | |
361e624f | 5100 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
5101 | }; |
5102 | struct nfs4_fs_locations_arg args = { | |
5103 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 5104 | .name = name, |
683b57b4 TM |
5105 | .page = page, |
5106 | .bitmask = bitmask, | |
5107 | }; | |
22958463 BH |
5108 | struct nfs4_fs_locations_res res = { |
5109 | .fs_locations = fs_locations, | |
5110 | }; | |
683b57b4 TM |
5111 | struct rpc_message msg = { |
5112 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
5113 | .rpc_argp = &args, | |
22958463 | 5114 | .rpc_resp = &res, |
683b57b4 TM |
5115 | }; |
5116 | int status; | |
5117 | ||
3110ff80 | 5118 | dprintk("%s: start\n", __func__); |
533eb461 AA |
5119 | |
5120 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
5121 | * is not supported */ | |
5122 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
5123 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
5124 | else | |
5125 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
5126 | ||
c228fd3a | 5127 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 5128 | fs_locations->server = server; |
830b8e33 | 5129 | fs_locations->nlocations = 0; |
f05d147f | 5130 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 5131 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
5132 | return status; |
5133 | } | |
5134 | ||
f05d147f BS |
5135 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5136 | const struct qstr *name, | |
5137 | struct nfs4_fs_locations *fs_locations, | |
5138 | struct page *page) | |
db0a9593 BS |
5139 | { |
5140 | struct nfs4_exception exception = { }; | |
5141 | int err; | |
5142 | do { | |
5143 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
f05d147f | 5144 | _nfs4_proc_fs_locations(client, dir, name, fs_locations, page), |
db0a9593 BS |
5145 | &exception); |
5146 | } while (exception.retry); | |
5147 | return err; | |
5148 | } | |
5149 | ||
5a5ea0d4 BS |
5150 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) |
5151 | { | |
5152 | int status; | |
5153 | struct nfs4_secinfo_arg args = { | |
5154 | .dir_fh = NFS_FH(dir), | |
5155 | .name = name, | |
5156 | }; | |
5157 | struct nfs4_secinfo_res res = { | |
5158 | .flavors = flavors, | |
5159 | }; | |
5160 | struct rpc_message msg = { | |
5161 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
5162 | .rpc_argp = &args, | |
5163 | .rpc_resp = &res, | |
5164 | }; | |
5165 | ||
5166 | dprintk("NFS call secinfo %s\n", name->name); | |
5167 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); | |
5168 | dprintk("NFS reply secinfo: %d\n", status); | |
5169 | return status; | |
5170 | } | |
5171 | ||
72de53ec BS |
5172 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
5173 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
5174 | { |
5175 | struct nfs4_exception exception = { }; | |
5176 | int err; | |
5177 | do { | |
5178 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
5179 | _nfs4_proc_secinfo(dir, name, flavors), | |
5180 | &exception); | |
5181 | } while (exception.retry); | |
5182 | return err; | |
5183 | } | |
5184 | ||
557134a3 | 5185 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
5186 | /* |
5187 | * Check the exchange flags returned by the server for invalid flags, having | |
5188 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
5189 | * DS flags set. | |
5190 | */ | |
5191 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
5192 | { | |
5193 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
5194 | goto out_inval; | |
5195 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
5196 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
5197 | goto out_inval; | |
5198 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
5199 | goto out_inval; | |
5200 | return NFS_OK; | |
5201 | out_inval: | |
5202 | return -NFS4ERR_INVAL; | |
5203 | } | |
5204 | ||
78fe0f41 | 5205 | static bool |
79d4e1f0 CL |
5206 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
5207 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
5208 | { |
5209 | if (a->server_scope_sz == b->server_scope_sz && | |
5210 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
5211 | return true; | |
5212 | ||
5213 | return false; | |
5214 | } | |
5215 | ||
7c44f1ae WAA |
5216 | /* |
5217 | * nfs4_proc_bind_conn_to_session() | |
5218 | * | |
5219 | * The 4.1 client currently uses the same TCP connection for the | |
5220 | * fore and backchannel. | |
5221 | */ | |
2cf047c9 | 5222 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred) |
7c44f1ae WAA |
5223 | { |
5224 | int status; | |
5225 | struct nfs41_bind_conn_to_session_res res; | |
5226 | struct rpc_message msg = { | |
5227 | .rpc_proc = | |
5228 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
5229 | .rpc_argp = clp, | |
5230 | .rpc_resp = &res, | |
2cf047c9 | 5231 | .rpc_cred = cred, |
7c44f1ae WAA |
5232 | }; |
5233 | ||
5234 | dprintk("--> %s\n", __func__); | |
7c44f1ae WAA |
5235 | |
5236 | res.session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); | |
5237 | if (unlikely(res.session == NULL)) { | |
5238 | status = -ENOMEM; | |
5239 | goto out; | |
5240 | } | |
5241 | ||
5242 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5243 | if (status == 0) { | |
5244 | if (memcmp(res.session->sess_id.data, | |
5245 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { | |
5246 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
5247 | status = -EIO; | |
5248 | goto out_session; | |
5249 | } | |
5250 | if (res.dir != NFS4_CDFS4_BOTH) { | |
5251 | dprintk("NFS: %s: Unexpected direction from server\n", | |
5252 | __func__); | |
5253 | status = -EIO; | |
5254 | goto out_session; | |
5255 | } | |
5256 | if (res.use_conn_in_rdma_mode) { | |
5257 | dprintk("NFS: %s: Server returned RDMA mode = true\n", | |
5258 | __func__); | |
5259 | status = -EIO; | |
5260 | goto out_session; | |
5261 | } | |
5262 | } | |
5263 | out_session: | |
5264 | kfree(res.session); | |
5265 | out: | |
5266 | dprintk("<-- %s status= %d\n", __func__, status); | |
5267 | return status; | |
5268 | } | |
5269 | ||
99fe60d0 BH |
5270 | /* |
5271 | * nfs4_proc_exchange_id() | |
5272 | * | |
6bbb4ae8 CL |
5273 | * Returns zero, a negative errno, or a negative NFS4ERR status code. |
5274 | * | |
99fe60d0 BH |
5275 | * Since the clientid has expired, all compounds using sessions |
5276 | * associated with the stale clientid will be returning | |
5277 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
5278 | * be in some phase of session reset. | |
5279 | */ | |
4d643d1d | 5280 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
5281 | { |
5282 | nfs4_verifier verifier; | |
5283 | struct nfs41_exchange_id_args args = { | |
cd93710e | 5284 | .verifier = &verifier, |
99fe60d0 | 5285 | .client = clp, |
357f54d6 | 5286 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, |
99fe60d0 BH |
5287 | }; |
5288 | struct nfs41_exchange_id_res res = { | |
32b01310 | 5289 | 0 |
99fe60d0 BH |
5290 | }; |
5291 | int status; | |
5292 | struct rpc_message msg = { | |
5293 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
5294 | .rpc_argp = &args, | |
5295 | .rpc_resp = &res, | |
5296 | .rpc_cred = cred, | |
5297 | }; | |
99fe60d0 | 5298 | |
f092075d | 5299 | nfs4_init_boot_verifier(clp, &verifier); |
e984a55a CL |
5300 | args.id_len = nfs4_init_uniform_client_string(clp, args.id, |
5301 | sizeof(args.id)); | |
6bbb4ae8 CL |
5302 | dprintk("NFS call exchange_id auth=%s, '%.*s'\n", |
5303 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
5304 | args.id_len, args.id); | |
99fe60d0 | 5305 | |
acdeb69d | 5306 | res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
bbafffd2 | 5307 | GFP_NOFS); |
acdeb69d | 5308 | if (unlikely(res.server_owner == NULL)) { |
abe9a6d5 WAA |
5309 | status = -ENOMEM; |
5310 | goto out; | |
5311 | } | |
78fe0f41 | 5312 | |
79d4e1f0 | 5313 | res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 5314 | GFP_NOFS); |
177313f1 | 5315 | if (unlikely(res.server_scope == NULL)) { |
abe9a6d5 | 5316 | status = -ENOMEM; |
acdeb69d | 5317 | goto out_server_owner; |
abe9a6d5 | 5318 | } |
78fe0f41 | 5319 | |
bbafffd2 | 5320 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
177313f1 | 5321 | if (unlikely(res.impl_id == NULL)) { |
7d2ed9ac WAA |
5322 | status = -ENOMEM; |
5323 | goto out_server_scope; | |
5324 | } | |
5325 | ||
1bd714f2 | 5326 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
177313f1 | 5327 | if (status == 0) |
32b01310 | 5328 | status = nfs4_check_cl_exchange_flags(res.flags); |
78fe0f41 | 5329 | |
acdeb69d | 5330 | if (status == 0) { |
32b01310 TM |
5331 | clp->cl_clientid = res.clientid; |
5332 | clp->cl_exchange_flags = (res.flags & ~EXCHGID4_FLAG_CONFIRMED_R); | |
5333 | if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R)) | |
5334 | clp->cl_seqid = res.seqid; | |
5335 | ||
acdeb69d CL |
5336 | kfree(clp->cl_serverowner); |
5337 | clp->cl_serverowner = res.server_owner; | |
5338 | res.server_owner = NULL; | |
78fe0f41 | 5339 | |
7d2ed9ac | 5340 | /* use the most recent implementation id */ |
59155546 CL |
5341 | kfree(clp->cl_implid); |
5342 | clp->cl_implid = res.impl_id; | |
7d2ed9ac | 5343 | |
177313f1 | 5344 | if (clp->cl_serverscope != NULL && |
79d4e1f0 | 5345 | !nfs41_same_server_scope(clp->cl_serverscope, |
78fe0f41 WAA |
5346 | res.server_scope)) { |
5347 | dprintk("%s: server_scope mismatch detected\n", | |
5348 | __func__); | |
5349 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
79d4e1f0 CL |
5350 | kfree(clp->cl_serverscope); |
5351 | clp->cl_serverscope = NULL; | |
78fe0f41 WAA |
5352 | } |
5353 | ||
177313f1 | 5354 | if (clp->cl_serverscope == NULL) { |
79d4e1f0 | 5355 | clp->cl_serverscope = res.server_scope; |
abe9a6d5 WAA |
5356 | goto out; |
5357 | } | |
32b01310 TM |
5358 | } else |
5359 | kfree(res.impl_id); | |
7d2ed9ac | 5360 | |
acdeb69d CL |
5361 | out_server_owner: |
5362 | kfree(res.server_owner); | |
7d2ed9ac | 5363 | out_server_scope: |
abe9a6d5 WAA |
5364 | kfree(res.server_scope); |
5365 | out: | |
177313f1 | 5366 | if (clp->cl_implid != NULL) |
6bbb4ae8 | 5367 | dprintk("NFS reply exchange_id: Server Implementation ID: " |
7d2ed9ac | 5368 | "domain: %s, name: %s, date: %llu,%u\n", |
6bbb4ae8 | 5369 | clp->cl_implid->domain, clp->cl_implid->name, |
59155546 CL |
5370 | clp->cl_implid->date.seconds, |
5371 | clp->cl_implid->date.nseconds); | |
6bbb4ae8 | 5372 | dprintk("NFS reply exchange_id: %d\n", status); |
99fe60d0 BH |
5373 | return status; |
5374 | } | |
5375 | ||
66245539 TM |
5376 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
5377 | struct rpc_cred *cred) | |
5378 | { | |
5379 | struct rpc_message msg = { | |
5380 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
5381 | .rpc_argp = clp, | |
5382 | .rpc_cred = cred, | |
5383 | }; | |
5384 | int status; | |
5385 | ||
5386 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5387 | if (status) | |
02c67525 | 5388 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
5389 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
5390 | return status; | |
5391 | } | |
5392 | ||
5393 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
5394 | struct rpc_cred *cred) | |
5395 | { | |
5396 | unsigned int loop; | |
5397 | int ret; | |
5398 | ||
5399 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
5400 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
5401 | switch (ret) { | |
5402 | case -NFS4ERR_DELAY: | |
5403 | case -NFS4ERR_CLIENTID_BUSY: | |
5404 | ssleep(1); | |
5405 | break; | |
5406 | default: | |
5407 | return ret; | |
5408 | } | |
5409 | } | |
5410 | return 0; | |
5411 | } | |
5412 | ||
5413 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
5414 | { | |
5415 | struct rpc_cred *cred; | |
5416 | int ret = 0; | |
5417 | ||
5418 | if (clp->cl_mvops->minor_version < 1) | |
5419 | goto out; | |
5420 | if (clp->cl_exchange_flags == 0) | |
5421 | goto out; | |
05f4c350 CL |
5422 | if (clp->cl_preserve_clid) |
5423 | goto out; | |
66245539 TM |
5424 | cred = nfs4_get_exchange_id_cred(clp); |
5425 | ret = nfs4_proc_destroy_clientid(clp, cred); | |
5426 | if (cred) | |
5427 | put_rpccred(cred); | |
5428 | switch (ret) { | |
5429 | case 0: | |
5430 | case -NFS4ERR_STALE_CLIENTID: | |
5431 | clp->cl_exchange_flags = 0; | |
5432 | } | |
5433 | out: | |
5434 | return ret; | |
5435 | } | |
5436 | ||
2050f0cc AA |
5437 | struct nfs4_get_lease_time_data { |
5438 | struct nfs4_get_lease_time_args *args; | |
5439 | struct nfs4_get_lease_time_res *res; | |
5440 | struct nfs_client *clp; | |
5441 | }; | |
5442 | ||
5443 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
5444 | void *calldata) | |
5445 | { | |
2050f0cc AA |
5446 | struct nfs4_get_lease_time_data *data = |
5447 | (struct nfs4_get_lease_time_data *)calldata; | |
5448 | ||
5449 | dprintk("--> %s\n", __func__); | |
689cf5c1 | 5450 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
2050f0cc AA |
5451 | /* just setup sequence, do not trigger session recovery |
5452 | since we're invoked within one */ | |
d9afbd1b TM |
5453 | nfs41_setup_sequence(data->clp->cl_session, |
5454 | &data->args->la_seq_args, | |
5455 | &data->res->lr_seq_res, | |
5456 | task); | |
2050f0cc AA |
5457 | dprintk("<-- %s\n", __func__); |
5458 | } | |
5459 | ||
5460 | /* | |
5461 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
5462 | * from sequence operation or clientid errors. | |
5463 | */ | |
5464 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
5465 | { | |
5466 | struct nfs4_get_lease_time_data *data = | |
5467 | (struct nfs4_get_lease_time_data *)calldata; | |
5468 | ||
5469 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5470 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
5471 | return; | |
2050f0cc AA |
5472 | switch (task->tk_status) { |
5473 | case -NFS4ERR_DELAY: | |
5474 | case -NFS4ERR_GRACE: | |
5475 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
5476 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
5477 | task->tk_status = 0; | |
a8a4ae3a AA |
5478 | /* fall through */ |
5479 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 5480 | rpc_restart_call_prepare(task); |
2050f0cc AA |
5481 | return; |
5482 | } | |
2050f0cc AA |
5483 | dprintk("<-- %s\n", __func__); |
5484 | } | |
5485 | ||
17280175 | 5486 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
5487 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
5488 | .rpc_call_done = nfs4_get_lease_time_done, | |
5489 | }; | |
5490 | ||
5491 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
5492 | { | |
5493 | struct rpc_task *task; | |
5494 | struct nfs4_get_lease_time_args args; | |
5495 | struct nfs4_get_lease_time_res res = { | |
5496 | .lr_fsinfo = fsinfo, | |
5497 | }; | |
5498 | struct nfs4_get_lease_time_data data = { | |
5499 | .args = &args, | |
5500 | .res = &res, | |
5501 | .clp = clp, | |
5502 | }; | |
5503 | struct rpc_message msg = { | |
5504 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
5505 | .rpc_argp = &args, | |
5506 | .rpc_resp = &res, | |
5507 | }; | |
5508 | struct rpc_task_setup task_setup = { | |
5509 | .rpc_client = clp->cl_rpcclient, | |
5510 | .rpc_message = &msg, | |
5511 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
5512 | .callback_data = &data, |
5513 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
5514 | }; |
5515 | int status; | |
5516 | ||
9d12b216 | 5517 | nfs41_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
2050f0cc AA |
5518 | dprintk("--> %s\n", __func__); |
5519 | task = rpc_run_task(&task_setup); | |
5520 | ||
5521 | if (IS_ERR(task)) | |
5522 | status = PTR_ERR(task); | |
5523 | else { | |
5524 | status = task->tk_status; | |
5525 | rpc_put_task(task); | |
5526 | } | |
5527 | dprintk("<-- %s return %d\n", __func__, status); | |
5528 | ||
5529 | return status; | |
5530 | } | |
5531 | ||
fc931582 AA |
5532 | /* |
5533 | * Initialize the values to be used by the client in CREATE_SESSION | |
5534 | * If nfs4_init_session set the fore channel request and response sizes, | |
5535 | * use them. | |
5536 | * | |
5537 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
5538 | * always set csa_cachethis to FALSE because the current implementation | |
5539 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
5540 | */ | |
5541 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
5542 | { | |
5543 | struct nfs4_session *session = args->client->cl_session; | |
ae72ae67 TM |
5544 | unsigned int mxrqst_sz = session->fc_target_max_rqst_sz, |
5545 | mxresp_sz = session->fc_target_max_resp_sz; | |
fc931582 AA |
5546 | |
5547 | if (mxrqst_sz == 0) | |
5548 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
5549 | if (mxresp_sz == 0) | |
5550 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
5551 | /* Fore channel attributes */ | |
fc931582 AA |
5552 | args->fc_attrs.max_rqst_sz = mxrqst_sz; |
5553 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 | 5554 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 5555 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
5556 | |
5557 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 5558 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
5559 | __func__, |
5560 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 5561 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
5562 | |
5563 | /* Back channel attributes */ | |
fc931582 AA |
5564 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
5565 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
5566 | args->bc_attrs.max_resp_sz_cached = 0; | |
5567 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
5568 | args->bc_attrs.max_reqs = 1; | |
5569 | ||
5570 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
5571 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
5572 | __func__, | |
5573 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
5574 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
5575 | args->bc_attrs.max_reqs); | |
5576 | } | |
5577 | ||
43c2e885 | 5578 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 5579 | { |
43c2e885 BF |
5580 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
5581 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
5582 | ||
43c2e885 BF |
5583 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
5584 | return -EINVAL; | |
5585 | /* | |
5586 | * Our requested max_ops is the minimum we need; we're not | |
5587 | * prepared to break up compounds into smaller pieces than that. | |
5588 | * So, no point even trying to continue if the server won't | |
5589 | * cooperate: | |
5590 | */ | |
5591 | if (rcvd->max_ops < sent->max_ops) | |
5592 | return -EINVAL; | |
5593 | if (rcvd->max_reqs == 0) | |
5594 | return -EINVAL; | |
b4b9a0c1 VG |
5595 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
5596 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 5597 | return 0; |
8d35301d AA |
5598 | } |
5599 | ||
43c2e885 BF |
5600 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
5601 | { | |
5602 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
5603 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 5604 | |
43c2e885 BF |
5605 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
5606 | return -EINVAL; | |
5607 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
5608 | return -EINVAL; | |
5609 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
5610 | return -EINVAL; | |
5611 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 5612 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 5613 | return -EINVAL; |
b4b9a0c1 | 5614 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 BF |
5615 | return -EINVAL; |
5616 | return 0; | |
5617 | } | |
8d35301d | 5618 | |
8d35301d AA |
5619 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
5620 | struct nfs4_session *session) | |
5621 | { | |
43c2e885 | 5622 | int ret; |
8d35301d | 5623 | |
43c2e885 BF |
5624 | ret = nfs4_verify_fore_channel_attrs(args, session); |
5625 | if (ret) | |
5626 | return ret; | |
5627 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
5628 | } |
5629 | ||
848f5bda TM |
5630 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
5631 | struct rpc_cred *cred) | |
fc931582 AA |
5632 | { |
5633 | struct nfs4_session *session = clp->cl_session; | |
5634 | struct nfs41_create_session_args args = { | |
5635 | .client = clp, | |
5636 | .cb_program = NFS4_CALLBACK, | |
5637 | }; | |
5638 | struct nfs41_create_session_res res = { | |
5639 | .client = clp, | |
5640 | }; | |
5641 | struct rpc_message msg = { | |
5642 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
5643 | .rpc_argp = &args, | |
5644 | .rpc_resp = &res, | |
848f5bda | 5645 | .rpc_cred = cred, |
fc931582 AA |
5646 | }; |
5647 | int status; | |
5648 | ||
5649 | nfs4_init_channel_attrs(&args); | |
0f91421e | 5650 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 5651 | |
1bd714f2 | 5652 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
fc931582 | 5653 | |
43095d39 | 5654 | if (!status) { |
8d35301d AA |
5655 | /* Verify the session's negotiated channel_attrs values */ |
5656 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
5657 | /* Increment the clientid slot sequence id */ |
5658 | clp->cl_seqid++; | |
5659 | } | |
5660 | ||
5661 | return status; | |
5662 | } | |
5663 | ||
5664 | /* | |
5665 | * Issues a CREATE_SESSION operation to the server. | |
5666 | * It is the responsibility of the caller to verify the session is | |
5667 | * expired before calling this routine. | |
5668 | */ | |
848f5bda | 5669 | int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred) |
fc931582 AA |
5670 | { |
5671 | int status; | |
5672 | unsigned *ptr; | |
fc931582 AA |
5673 | struct nfs4_session *session = clp->cl_session; |
5674 | ||
5675 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
5676 | ||
848f5bda | 5677 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
5678 | if (status) |
5679 | goto out; | |
5680 | ||
aacd5537 AA |
5681 | /* Init or reset the session slot tables */ |
5682 | status = nfs4_setup_session_slot_tables(session); | |
5683 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
5684 | if (status) |
5685 | goto out; | |
5686 | ||
5687 | ptr = (unsigned *)&session->sess_id.data[0]; | |
5688 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
5689 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
5690 | out: |
5691 | dprintk("<-- %s\n", __func__); | |
5692 | return status; | |
5693 | } | |
5694 | ||
0f3e66c6 AA |
5695 | /* |
5696 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
5697 | * The caller must serialize access to this routine. | |
5698 | */ | |
848f5bda TM |
5699 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
5700 | struct rpc_cred *cred) | |
0f3e66c6 | 5701 | { |
848f5bda TM |
5702 | struct rpc_message msg = { |
5703 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
5704 | .rpc_argp = session, | |
5705 | .rpc_cred = cred, | |
5706 | }; | |
0f3e66c6 | 5707 | int status = 0; |
0f3e66c6 AA |
5708 | |
5709 | dprintk("--> nfs4_proc_destroy_session\n"); | |
5710 | ||
5711 | /* session is still being setup */ | |
5712 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
5713 | return status; | |
5714 | ||
1bd714f2 | 5715 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
0f3e66c6 AA |
5716 | |
5717 | if (status) | |
08106ac7 | 5718 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
5719 | "Session has been destroyed regardless...\n", status); |
5720 | ||
5721 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
5722 | return status; | |
5723 | } | |
5724 | ||
fc01cea9 AA |
5725 | /* |
5726 | * Renew the cl_session lease. | |
5727 | */ | |
d5f8d3fe TM |
5728 | struct nfs4_sequence_data { |
5729 | struct nfs_client *clp; | |
5730 | struct nfs4_sequence_args args; | |
5731 | struct nfs4_sequence_res res; | |
5732 | }; | |
5733 | ||
dc96aef9 AB |
5734 | static void nfs41_sequence_release(void *data) |
5735 | { | |
d5f8d3fe TM |
5736 | struct nfs4_sequence_data *calldata = data; |
5737 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 5738 | |
7135840f AB |
5739 | if (atomic_read(&clp->cl_count) > 1) |
5740 | nfs4_schedule_state_renewal(clp); | |
5741 | nfs_put_client(clp); | |
d5f8d3fe | 5742 | kfree(calldata); |
dc96aef9 AB |
5743 | } |
5744 | ||
aa5190d0 TM |
5745 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5746 | { | |
5747 | switch(task->tk_status) { | |
5748 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5749 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5750 | return -EAGAIN; | |
5751 | default: | |
0400a6b0 | 5752 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5753 | } |
5754 | return 0; | |
5755 | } | |
5756 | ||
dc96aef9 | 5757 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 5758 | { |
d5f8d3fe TM |
5759 | struct nfs4_sequence_data *calldata = data; |
5760 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 5761 | |
14516c3a TM |
5762 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
5763 | return; | |
fc01cea9 AA |
5764 | |
5765 | if (task->tk_status < 0) { | |
5766 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
5767 | if (atomic_read(&clp->cl_count) == 1) |
5768 | goto out; | |
fc01cea9 | 5769 | |
aa5190d0 TM |
5770 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
5771 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
5772 | return; |
5773 | } | |
5774 | } | |
fc01cea9 | 5775 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 5776 | out: |
fc01cea9 AA |
5777 | dprintk("<-- %s\n", __func__); |
5778 | } | |
5779 | ||
5780 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
5781 | { | |
d5f8d3fe TM |
5782 | struct nfs4_sequence_data *calldata = data; |
5783 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
5784 | struct nfs4_sequence_args *args; |
5785 | struct nfs4_sequence_res *res; | |
5786 | ||
fc01cea9 AA |
5787 | args = task->tk_msg.rpc_argp; |
5788 | res = task->tk_msg.rpc_resp; | |
5789 | ||
d9afbd1b | 5790 | nfs41_setup_sequence(clp->cl_session, args, res, task); |
fc01cea9 AA |
5791 | } |
5792 | ||
6bdb5f21 BS |
5793 | static void nfs41_sequence_prepare_privileged(struct rpc_task *task, void *data) |
5794 | { | |
5795 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
5796 | nfs41_sequence_prepare(task, data); | |
5797 | } | |
5798 | ||
fc01cea9 AA |
5799 | static const struct rpc_call_ops nfs41_sequence_ops = { |
5800 | .rpc_call_done = nfs41_sequence_call_done, | |
5801 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 5802 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
5803 | }; |
5804 | ||
6bdb5f21 BS |
5805 | static const struct rpc_call_ops nfs41_sequence_privileged_ops = { |
5806 | .rpc_call_done = nfs41_sequence_call_done, | |
5807 | .rpc_call_prepare = nfs41_sequence_prepare_privileged, | |
5808 | .rpc_release = nfs41_sequence_release, | |
5809 | }; | |
5810 | ||
5811 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred, | |
5812 | const struct rpc_call_ops *seq_ops) | |
fc01cea9 | 5813 | { |
d5f8d3fe | 5814 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
5815 | struct rpc_message msg = { |
5816 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
5817 | .rpc_cred = cred, | |
5818 | }; | |
71ac6da9 TM |
5819 | struct rpc_task_setup task_setup_data = { |
5820 | .rpc_client = clp->cl_rpcclient, | |
5821 | .rpc_message = &msg, | |
6bdb5f21 | 5822 | .callback_ops = seq_ops, |
71ac6da9 TM |
5823 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT, |
5824 | }; | |
fc01cea9 | 5825 | |
7135840f | 5826 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 5827 | return ERR_PTR(-EIO); |
dfb4f309 | 5828 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 5829 | if (calldata == NULL) { |
7135840f | 5830 | nfs_put_client(clp); |
71ac6da9 | 5831 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 5832 | } |
9d12b216 | 5833 | nfs41_init_sequence(&calldata->args, &calldata->res, 0); |
d5f8d3fe TM |
5834 | msg.rpc_argp = &calldata->args; |
5835 | msg.rpc_resp = &calldata->res; | |
5836 | calldata->clp = clp; | |
71ac6da9 | 5837 | task_setup_data.callback_data = calldata; |
fc01cea9 | 5838 | |
71ac6da9 TM |
5839 | return rpc_run_task(&task_setup_data); |
5840 | } | |
5841 | ||
2f60ea6b | 5842 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
5843 | { |
5844 | struct rpc_task *task; | |
5845 | int ret = 0; | |
5846 | ||
2f60ea6b TM |
5847 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
5848 | return 0; | |
6bdb5f21 | 5849 | task = _nfs41_proc_sequence(clp, cred, &nfs41_sequence_ops); |
71ac6da9 TM |
5850 | if (IS_ERR(task)) |
5851 | ret = PTR_ERR(task); | |
5852 | else | |
bf294b41 | 5853 | rpc_put_task_async(task); |
71ac6da9 TM |
5854 | dprintk("<-- %s status=%d\n", __func__, ret); |
5855 | return ret; | |
5856 | } | |
5857 | ||
5858 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5859 | { | |
5860 | struct rpc_task *task; | |
5861 | int ret; | |
5862 | ||
6bdb5f21 | 5863 | task = _nfs41_proc_sequence(clp, cred, &nfs41_sequence_privileged_ops); |
71ac6da9 TM |
5864 | if (IS_ERR(task)) { |
5865 | ret = PTR_ERR(task); | |
5866 | goto out; | |
5867 | } | |
5868 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
5869 | if (!ret) { |
5870 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
5871 | ||
5872 | if (task->tk_status == 0) | |
5873 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 5874 | ret = task->tk_status; |
b4410c2f | 5875 | } |
71ac6da9 TM |
5876 | rpc_put_task(task); |
5877 | out: | |
5878 | dprintk("<-- %s status=%d\n", __func__, ret); | |
5879 | return ret; | |
fc01cea9 AA |
5880 | } |
5881 | ||
fce5c838 RL |
5882 | struct nfs4_reclaim_complete_data { |
5883 | struct nfs_client *clp; | |
5884 | struct nfs41_reclaim_complete_args arg; | |
5885 | struct nfs41_reclaim_complete_res res; | |
5886 | }; | |
5887 | ||
5888 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
5889 | { | |
5890 | struct nfs4_reclaim_complete_data *calldata = data; | |
5891 | ||
b257957e | 5892 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
d9afbd1b TM |
5893 | nfs41_setup_sequence(calldata->clp->cl_session, |
5894 | &calldata->arg.seq_args, | |
5895 | &calldata->res.seq_res, | |
5896 | task); | |
fce5c838 RL |
5897 | } |
5898 | ||
aa5190d0 TM |
5899 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5900 | { | |
5901 | switch(task->tk_status) { | |
5902 | case 0: | |
5903 | case -NFS4ERR_COMPLETE_ALREADY: | |
5904 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
5905 | break; | |
5906 | case -NFS4ERR_DELAY: | |
aa5190d0 | 5907 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
5908 | /* fall through */ |
5909 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
5910 | return -EAGAIN; |
5911 | default: | |
0400a6b0 | 5912 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5913 | } |
5914 | return 0; | |
5915 | } | |
5916 | ||
fce5c838 RL |
5917 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
5918 | { | |
5919 | struct nfs4_reclaim_complete_data *calldata = data; | |
5920 | struct nfs_client *clp = calldata->clp; | |
5921 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
5922 | ||
5923 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5924 | if (!nfs41_sequence_done(task, res)) |
5925 | return; | |
fce5c838 | 5926 | |
aa5190d0 TM |
5927 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
5928 | rpc_restart_call_prepare(task); | |
5929 | return; | |
5930 | } | |
fce5c838 RL |
5931 | dprintk("<-- %s\n", __func__); |
5932 | } | |
5933 | ||
5934 | static void nfs4_free_reclaim_complete_data(void *data) | |
5935 | { | |
5936 | struct nfs4_reclaim_complete_data *calldata = data; | |
5937 | ||
5938 | kfree(calldata); | |
5939 | } | |
5940 | ||
5941 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
5942 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
5943 | .rpc_call_done = nfs4_reclaim_complete_done, | |
5944 | .rpc_release = nfs4_free_reclaim_complete_data, | |
5945 | }; | |
5946 | ||
5947 | /* | |
5948 | * Issue a global reclaim complete. | |
5949 | */ | |
5950 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
5951 | { | |
5952 | struct nfs4_reclaim_complete_data *calldata; | |
5953 | struct rpc_task *task; | |
5954 | struct rpc_message msg = { | |
5955 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
5956 | }; | |
5957 | struct rpc_task_setup task_setup_data = { | |
5958 | .rpc_client = clp->cl_rpcclient, | |
5959 | .rpc_message = &msg, | |
5960 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
5961 | .flags = RPC_TASK_ASYNC, | |
5962 | }; | |
5963 | int status = -ENOMEM; | |
5964 | ||
5965 | dprintk("--> %s\n", __func__); | |
8535b2be | 5966 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
5967 | if (calldata == NULL) |
5968 | goto out; | |
5969 | calldata->clp = clp; | |
5970 | calldata->arg.one_fs = 0; | |
fce5c838 | 5971 | |
9d12b216 | 5972 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
fce5c838 RL |
5973 | msg.rpc_argp = &calldata->arg; |
5974 | msg.rpc_resp = &calldata->res; | |
5975 | task_setup_data.callback_data = calldata; | |
5976 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 5977 | if (IS_ERR(task)) { |
fce5c838 | 5978 | status = PTR_ERR(task); |
acf82b85 DC |
5979 | goto out; |
5980 | } | |
c34c32ea AA |
5981 | status = nfs4_wait_for_completion_rpc_task(task); |
5982 | if (status == 0) | |
5983 | status = task->tk_status; | |
fce5c838 | 5984 | rpc_put_task(task); |
acf82b85 | 5985 | return 0; |
fce5c838 RL |
5986 | out: |
5987 | dprintk("<-- %s status=%d\n", __func__, status); | |
5988 | return status; | |
5989 | } | |
b1f69b75 AA |
5990 | |
5991 | static void | |
5992 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
5993 | { | |
5994 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 5995 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
6ba7db34 | 5996 | struct nfs4_session *session = nfs4_get_session(server); |
b1f69b75 AA |
5997 | |
5998 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
5999 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
6000 | * right now covering the LAYOUTGET we are about to send. | |
6001 | * However, that is not so catastrophic, and there seems | |
6002 | * to be no way to prevent it completely. | |
6003 | */ | |
6ba7db34 | 6004 | if (nfs41_setup_sequence(session, &lgp->args.seq_args, |
9d12b216 | 6005 | &lgp->res.seq_res, task)) |
b1f69b75 | 6006 | return; |
cf7d63f1 FI |
6007 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
6008 | NFS_I(lgp->args.inode)->layout, | |
6009 | lgp->args.ctx->state)) { | |
6010 | rpc_exit(task, NFS4_OK); | |
cf7d63f1 | 6011 | } |
b1f69b75 AA |
6012 | } |
6013 | ||
6014 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
6015 | { | |
6016 | struct nfs4_layoutget *lgp = calldata; | |
ee314c2a TM |
6017 | struct inode *inode = lgp->args.inode; |
6018 | struct nfs_server *server = NFS_SERVER(inode); | |
6019 | struct pnfs_layout_hdr *lo; | |
6020 | struct nfs4_state *state = NULL; | |
b1f69b75 AA |
6021 | |
6022 | dprintk("--> %s\n", __func__); | |
6023 | ||
6ba7db34 | 6024 | if (!nfs41_sequence_done(task, &lgp->res.seq_res)) |
ee314c2a | 6025 | goto out; |
b1f69b75 AA |
6026 | |
6027 | switch (task->tk_status) { | |
6028 | case 0: | |
ee314c2a | 6029 | goto out; |
b1f69b75 AA |
6030 | case -NFS4ERR_LAYOUTTRYLATER: |
6031 | case -NFS4ERR_RECALLCONFLICT: | |
6032 | task->tk_status = -NFS4ERR_DELAY; | |
ee314c2a TM |
6033 | break; |
6034 | case -NFS4ERR_EXPIRED: | |
6035 | case -NFS4ERR_BAD_STATEID: | |
6036 | spin_lock(&inode->i_lock); | |
6037 | lo = NFS_I(inode)->layout; | |
6038 | if (!lo || list_empty(&lo->plh_segs)) { | |
6039 | spin_unlock(&inode->i_lock); | |
6040 | /* If the open stateid was bad, then recover it. */ | |
6041 | state = lgp->args.ctx->state; | |
6042 | } else { | |
6043 | LIST_HEAD(head); | |
6044 | ||
6045 | pnfs_mark_matching_lsegs_invalid(lo, &head, NULL); | |
6046 | spin_unlock(&inode->i_lock); | |
6047 | /* Mark the bad layout state as invalid, then | |
6048 | * retry using the open stateid. */ | |
6049 | pnfs_free_lseg_list(&head); | |
b1f69b75 AA |
6050 | } |
6051 | } | |
ee314c2a TM |
6052 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
6053 | rpc_restart_call_prepare(task); | |
6054 | out: | |
b1f69b75 AA |
6055 | dprintk("<-- %s\n", __func__); |
6056 | } | |
6057 | ||
8554116e IK |
6058 | static size_t max_response_pages(struct nfs_server *server) |
6059 | { | |
6060 | u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; | |
6061 | return nfs_page_array_len(0, max_resp_sz); | |
6062 | } | |
6063 | ||
6064 | static void nfs4_free_pages(struct page **pages, size_t size) | |
6065 | { | |
6066 | int i; | |
6067 | ||
6068 | if (!pages) | |
6069 | return; | |
6070 | ||
6071 | for (i = 0; i < size; i++) { | |
6072 | if (!pages[i]) | |
6073 | break; | |
6074 | __free_page(pages[i]); | |
6075 | } | |
6076 | kfree(pages); | |
6077 | } | |
6078 | ||
6079 | static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags) | |
6080 | { | |
6081 | struct page **pages; | |
6082 | int i; | |
6083 | ||
6084 | pages = kcalloc(size, sizeof(struct page *), gfp_flags); | |
6085 | if (!pages) { | |
6086 | dprintk("%s: can't alloc array of %zu pages\n", __func__, size); | |
6087 | return NULL; | |
6088 | } | |
6089 | ||
6090 | for (i = 0; i < size; i++) { | |
6091 | pages[i] = alloc_page(gfp_flags); | |
6092 | if (!pages[i]) { | |
6093 | dprintk("%s: failed to allocate page\n", __func__); | |
6094 | nfs4_free_pages(pages, size); | |
6095 | return NULL; | |
6096 | } | |
6097 | } | |
6098 | ||
6099 | return pages; | |
6100 | } | |
6101 | ||
b1f69b75 AA |
6102 | static void nfs4_layoutget_release(void *calldata) |
6103 | { | |
6104 | struct nfs4_layoutget *lgp = calldata; | |
8554116e IK |
6105 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
6106 | size_t max_pages = max_response_pages(server); | |
b1f69b75 AA |
6107 | |
6108 | dprintk("--> %s\n", __func__); | |
8554116e | 6109 | nfs4_free_pages(lgp->args.layout.pages, max_pages); |
b1f69b75 AA |
6110 | put_nfs_open_context(lgp->args.ctx); |
6111 | kfree(calldata); | |
6112 | dprintk("<-- %s\n", __func__); | |
6113 | } | |
6114 | ||
6115 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
6116 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
6117 | .rpc_call_done = nfs4_layoutget_done, | |
6118 | .rpc_release = nfs4_layoutget_release, | |
6119 | }; | |
6120 | ||
a0b0a6e3 TM |
6121 | struct pnfs_layout_segment * |
6122 | nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags) | |
b1f69b75 AA |
6123 | { |
6124 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
8554116e | 6125 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
6126 | struct rpc_task *task; |
6127 | struct rpc_message msg = { | |
6128 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
6129 | .rpc_argp = &lgp->args, | |
6130 | .rpc_resp = &lgp->res, | |
6131 | }; | |
6132 | struct rpc_task_setup task_setup_data = { | |
6133 | .rpc_client = server->client, | |
6134 | .rpc_message = &msg, | |
6135 | .callback_ops = &nfs4_layoutget_call_ops, | |
6136 | .callback_data = lgp, | |
6137 | .flags = RPC_TASK_ASYNC, | |
6138 | }; | |
a0b0a6e3 | 6139 | struct pnfs_layout_segment *lseg = NULL; |
b1f69b75 AA |
6140 | int status = 0; |
6141 | ||
6142 | dprintk("--> %s\n", __func__); | |
6143 | ||
8554116e IK |
6144 | lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags); |
6145 | if (!lgp->args.layout.pages) { | |
6146 | nfs4_layoutget_release(lgp); | |
a0b0a6e3 | 6147 | return ERR_PTR(-ENOMEM); |
8554116e IK |
6148 | } |
6149 | lgp->args.layout.pglen = max_pages * PAGE_SIZE; | |
6150 | ||
35124a09 | 6151 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 6152 | lgp->res.seq_res.sr_slot = NULL; |
9d12b216 | 6153 | nfs41_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
b1f69b75 AA |
6154 | task = rpc_run_task(&task_setup_data); |
6155 | if (IS_ERR(task)) | |
a0b0a6e3 | 6156 | return ERR_CAST(task); |
b1f69b75 | 6157 | status = nfs4_wait_for_completion_rpc_task(task); |
c31663d4 FI |
6158 | if (status == 0) |
6159 | status = task->tk_status; | |
6160 | if (status == 0) | |
a0b0a6e3 | 6161 | lseg = pnfs_layout_process(lgp); |
b1f69b75 AA |
6162 | rpc_put_task(task); |
6163 | dprintk("<-- %s status=%d\n", __func__, status); | |
a0b0a6e3 TM |
6164 | if (status) |
6165 | return ERR_PTR(status); | |
6166 | return lseg; | |
b1f69b75 AA |
6167 | } |
6168 | ||
cbe82603 BH |
6169 | static void |
6170 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
6171 | { | |
6172 | struct nfs4_layoutreturn *lrp = calldata; | |
6173 | ||
6174 | dprintk("--> %s\n", __func__); | |
d9afbd1b TM |
6175 | nfs41_setup_sequence(lrp->clp->cl_session, |
6176 | &lrp->args.seq_args, | |
6177 | &lrp->res.seq_res, | |
6178 | task); | |
cbe82603 BH |
6179 | } |
6180 | ||
6181 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
6182 | { | |
6183 | struct nfs4_layoutreturn *lrp = calldata; | |
6184 | struct nfs_server *server; | |
6185 | ||
6186 | dprintk("--> %s\n", __func__); | |
6187 | ||
6ba7db34 | 6188 | if (!nfs41_sequence_done(task, &lrp->res.seq_res)) |
cbe82603 BH |
6189 | return; |
6190 | ||
6191 | server = NFS_SERVER(lrp->args.inode); | |
6192 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 6193 | rpc_restart_call_prepare(task); |
cbe82603 BH |
6194 | return; |
6195 | } | |
cbe82603 BH |
6196 | dprintk("<-- %s\n", __func__); |
6197 | } | |
6198 | ||
6199 | static void nfs4_layoutreturn_release(void *calldata) | |
6200 | { | |
6201 | struct nfs4_layoutreturn *lrp = calldata; | |
849b286f | 6202 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
6203 | |
6204 | dprintk("--> %s\n", __func__); | |
849b286f TM |
6205 | spin_lock(&lo->plh_inode->i_lock); |
6206 | if (lrp->res.lrs_present) | |
6207 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); | |
6208 | lo->plh_block_lgets--; | |
6209 | spin_unlock(&lo->plh_inode->i_lock); | |
70c3bd2b | 6210 | pnfs_put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
6211 | kfree(calldata); |
6212 | dprintk("<-- %s\n", __func__); | |
6213 | } | |
6214 | ||
6215 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
6216 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
6217 | .rpc_call_done = nfs4_layoutreturn_done, | |
6218 | .rpc_release = nfs4_layoutreturn_release, | |
6219 | }; | |
6220 | ||
6221 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
6222 | { | |
6223 | struct rpc_task *task; | |
6224 | struct rpc_message msg = { | |
6225 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
6226 | .rpc_argp = &lrp->args, | |
6227 | .rpc_resp = &lrp->res, | |
6228 | }; | |
6229 | struct rpc_task_setup task_setup_data = { | |
6230 | .rpc_client = lrp->clp->cl_rpcclient, | |
6231 | .rpc_message = &msg, | |
6232 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
6233 | .callback_data = lrp, | |
6234 | }; | |
6235 | int status; | |
6236 | ||
6237 | dprintk("--> %s\n", __func__); | |
9d12b216 | 6238 | nfs41_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
6239 | task = rpc_run_task(&task_setup_data); |
6240 | if (IS_ERR(task)) | |
6241 | return PTR_ERR(task); | |
6242 | status = task->tk_status; | |
6243 | dprintk("<-- %s status=%d\n", __func__, status); | |
6244 | rpc_put_task(task); | |
6245 | return status; | |
6246 | } | |
6247 | ||
7f11d8d3 AA |
6248 | /* |
6249 | * Retrieve the list of Data Server devices from the MDS. | |
6250 | */ | |
6251 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
6252 | const struct nfs_fh *fh, | |
6253 | struct pnfs_devicelist *devlist) | |
6254 | { | |
6255 | struct nfs4_getdevicelist_args args = { | |
6256 | .fh = fh, | |
6257 | .layoutclass = server->pnfs_curr_ld->id, | |
6258 | }; | |
6259 | struct nfs4_getdevicelist_res res = { | |
6260 | .devlist = devlist, | |
6261 | }; | |
6262 | struct rpc_message msg = { | |
6263 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
6264 | .rpc_argp = &args, | |
6265 | .rpc_resp = &res, | |
6266 | }; | |
6267 | int status; | |
6268 | ||
6269 | dprintk("--> %s\n", __func__); | |
6270 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
6271 | &res.seq_res, 0); | |
6272 | dprintk("<-- %s status=%d\n", __func__, status); | |
6273 | return status; | |
6274 | } | |
6275 | ||
6276 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
6277 | const struct nfs_fh *fh, | |
6278 | struct pnfs_devicelist *devlist) | |
6279 | { | |
6280 | struct nfs4_exception exception = { }; | |
6281 | int err; | |
6282 | ||
6283 | do { | |
6284 | err = nfs4_handle_exception(server, | |
6285 | _nfs4_getdevicelist(server, fh, devlist), | |
6286 | &exception); | |
6287 | } while (exception.retry); | |
6288 | ||
6289 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
6290 | err, devlist->num_devs); | |
6291 | ||
6292 | return err; | |
6293 | } | |
6294 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
6295 | ||
b1f69b75 AA |
6296 | static int |
6297 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6298 | { | |
6299 | struct nfs4_getdeviceinfo_args args = { | |
6300 | .pdev = pdev, | |
6301 | }; | |
6302 | struct nfs4_getdeviceinfo_res res = { | |
6303 | .pdev = pdev, | |
6304 | }; | |
6305 | struct rpc_message msg = { | |
6306 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
6307 | .rpc_argp = &args, | |
6308 | .rpc_resp = &res, | |
6309 | }; | |
6310 | int status; | |
6311 | ||
6312 | dprintk("--> %s\n", __func__); | |
7c513058 | 6313 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
6314 | dprintk("<-- %s status=%d\n", __func__, status); |
6315 | ||
6316 | return status; | |
6317 | } | |
6318 | ||
6319 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6320 | { | |
6321 | struct nfs4_exception exception = { }; | |
6322 | int err; | |
6323 | ||
6324 | do { | |
6325 | err = nfs4_handle_exception(server, | |
6326 | _nfs4_proc_getdeviceinfo(server, pdev), | |
6327 | &exception); | |
6328 | } while (exception.retry); | |
6329 | return err; | |
6330 | } | |
6331 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
6332 | ||
863a3c6c AA |
6333 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
6334 | { | |
6335 | struct nfs4_layoutcommit_data *data = calldata; | |
6336 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6ba7db34 | 6337 | struct nfs4_session *session = nfs4_get_session(server); |
863a3c6c | 6338 | |
d9afbd1b TM |
6339 | nfs41_setup_sequence(session, |
6340 | &data->args.seq_args, | |
6341 | &data->res.seq_res, | |
6342 | task); | |
863a3c6c AA |
6343 | } |
6344 | ||
6345 | static void | |
6346 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
6347 | { | |
6348 | struct nfs4_layoutcommit_data *data = calldata; | |
6349 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6350 | ||
6ba7db34 | 6351 | if (!nfs41_sequence_done(task, &data->res.seq_res)) |
863a3c6c AA |
6352 | return; |
6353 | ||
6354 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
6355 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
6356 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
6357 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
6358 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 6359 | task->tk_status = 0; |
e59d27e0 TM |
6360 | break; |
6361 | case 0: | |
863a3c6c AA |
6362 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
6363 | data->res.fattr); | |
e59d27e0 TM |
6364 | break; |
6365 | default: | |
6366 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
6367 | rpc_restart_call_prepare(task); | |
6368 | return; | |
6369 | } | |
6370 | } | |
863a3c6c AA |
6371 | } |
6372 | ||
6373 | static void nfs4_layoutcommit_release(void *calldata) | |
6374 | { | |
6375 | struct nfs4_layoutcommit_data *data = calldata; | |
a9bae566 | 6376 | struct pnfs_layout_segment *lseg, *tmp; |
92407e75 | 6377 | unsigned long *bitlock = &NFS_I(data->args.inode)->flags; |
863a3c6c | 6378 | |
db29c089 | 6379 | pnfs_cleanup_layoutcommit(data); |
863a3c6c | 6380 | /* Matched by references in pnfs_set_layoutcommit */ |
a9bae566 PT |
6381 | list_for_each_entry_safe(lseg, tmp, &data->lseg_list, pls_lc_list) { |
6382 | list_del_init(&lseg->pls_lc_list); | |
6383 | if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT, | |
6384 | &lseg->pls_flags)) | |
9369a431 | 6385 | pnfs_put_lseg(lseg); |
a9bae566 | 6386 | } |
92407e75 PT |
6387 | |
6388 | clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING, bitlock); | |
6389 | smp_mb__after_clear_bit(); | |
6390 | wake_up_bit(bitlock, NFS_INO_LAYOUTCOMMITTING); | |
6391 | ||
863a3c6c AA |
6392 | put_rpccred(data->cred); |
6393 | kfree(data); | |
6394 | } | |
6395 | ||
6396 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
6397 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
6398 | .rpc_call_done = nfs4_layoutcommit_done, | |
6399 | .rpc_release = nfs4_layoutcommit_release, | |
6400 | }; | |
6401 | ||
6402 | int | |
ef311537 | 6403 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
6404 | { |
6405 | struct rpc_message msg = { | |
6406 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
6407 | .rpc_argp = &data->args, | |
6408 | .rpc_resp = &data->res, | |
6409 | .rpc_cred = data->cred, | |
6410 | }; | |
6411 | struct rpc_task_setup task_setup_data = { | |
6412 | .task = &data->task, | |
6413 | .rpc_client = NFS_CLIENT(data->args.inode), | |
6414 | .rpc_message = &msg, | |
6415 | .callback_ops = &nfs4_layoutcommit_ops, | |
6416 | .callback_data = data, | |
6417 | .flags = RPC_TASK_ASYNC, | |
6418 | }; | |
6419 | struct rpc_task *task; | |
6420 | int status = 0; | |
6421 | ||
6422 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
6423 | "lbw: %llu inode %lu\n", | |
6424 | data->task.tk_pid, sync, | |
6425 | data->args.lastbytewritten, | |
6426 | data->args.inode->i_ino); | |
6427 | ||
9d12b216 | 6428 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
6429 | task = rpc_run_task(&task_setup_data); |
6430 | if (IS_ERR(task)) | |
6431 | return PTR_ERR(task); | |
ef311537 | 6432 | if (sync == false) |
863a3c6c AA |
6433 | goto out; |
6434 | status = nfs4_wait_for_completion_rpc_task(task); | |
6435 | if (status != 0) | |
6436 | goto out; | |
6437 | status = task->tk_status; | |
6438 | out: | |
6439 | dprintk("%s: status %d\n", __func__, status); | |
6440 | rpc_put_task(task); | |
6441 | return status; | |
6442 | } | |
fca78d6d BS |
6443 | |
6444 | static int | |
6445 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6446 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6447 | { | |
6448 | struct nfs41_secinfo_no_name_args args = { | |
6449 | .style = SECINFO_STYLE_CURRENT_FH, | |
6450 | }; | |
6451 | struct nfs4_secinfo_res res = { | |
6452 | .flavors = flavors, | |
6453 | }; | |
6454 | struct rpc_message msg = { | |
6455 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
6456 | .rpc_argp = &args, | |
6457 | .rpc_resp = &res, | |
6458 | }; | |
6459 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); | |
6460 | } | |
6461 | ||
6462 | static int | |
6463 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6464 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6465 | { | |
6466 | struct nfs4_exception exception = { }; | |
6467 | int err; | |
6468 | do { | |
6469 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6470 | switch (err) { | |
6471 | case 0: | |
6472 | case -NFS4ERR_WRONGSEC: | |
6473 | case -NFS4ERR_NOTSUPP: | |
05e9cfb4 | 6474 | goto out; |
fca78d6d BS |
6475 | default: |
6476 | err = nfs4_handle_exception(server, err, &exception); | |
6477 | } | |
6478 | } while (exception.retry); | |
05e9cfb4 | 6479 | out: |
fca78d6d BS |
6480 | return err; |
6481 | } | |
6482 | ||
6483 | static int | |
6484 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
6485 | struct nfs_fsinfo *info) | |
6486 | { | |
6487 | int err; | |
6488 | struct page *page; | |
6489 | rpc_authflavor_t flavor; | |
6490 | struct nfs4_secinfo_flavors *flavors; | |
6491 | ||
6492 | page = alloc_page(GFP_KERNEL); | |
6493 | if (!page) { | |
6494 | err = -ENOMEM; | |
6495 | goto out; | |
6496 | } | |
6497 | ||
6498 | flavors = page_address(page); | |
6499 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6500 | ||
6501 | /* | |
6502 | * Fall back on "guess and check" method if | |
6503 | * the server doesn't support SECINFO_NO_NAME | |
6504 | */ | |
6505 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
6506 | err = nfs4_find_root_sec(server, fhandle, info); | |
6507 | goto out_freepage; | |
6508 | } | |
6509 | if (err) | |
6510 | goto out_freepage; | |
6511 | ||
6512 | flavor = nfs_find_best_sec(flavors); | |
6513 | if (err == 0) | |
6514 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
6515 | ||
6516 | out_freepage: | |
6517 | put_page(page); | |
6518 | if (err == -EACCES) | |
6519 | return -EPERM; | |
6520 | out: | |
6521 | return err; | |
6522 | } | |
1cab0652 BS |
6523 | |
6524 | static int _nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) | |
7d974794 BS |
6525 | { |
6526 | int status; | |
6527 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 6528 | .stateid = stateid, |
7d974794 BS |
6529 | }; |
6530 | struct nfs41_test_stateid_res res; | |
6531 | struct rpc_message msg = { | |
6532 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
6533 | .rpc_argp = &args, | |
6534 | .rpc_resp = &res, | |
6535 | }; | |
1cab0652 | 6536 | |
38527b15 | 6537 | dprintk("NFS call test_stateid %p\n", stateid); |
9d12b216 | 6538 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
1cab0652 | 6539 | status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
38527b15 CL |
6540 | if (status != NFS_OK) { |
6541 | dprintk("NFS reply test_stateid: failed, %d\n", status); | |
377e507d | 6542 | return status; |
38527b15 CL |
6543 | } |
6544 | dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status); | |
377e507d | 6545 | return -res.status; |
7d974794 BS |
6546 | } |
6547 | ||
38527b15 CL |
6548 | /** |
6549 | * nfs41_test_stateid - perform a TEST_STATEID operation | |
6550 | * | |
6551 | * @server: server / transport on which to perform the operation | |
6552 | * @stateid: state ID to test | |
6553 | * | |
6554 | * Returns NFS_OK if the server recognizes that "stateid" is valid. | |
6555 | * Otherwise a negative NFS4ERR value is returned if the operation | |
6556 | * failed or the state ID is not currently valid. | |
6557 | */ | |
1cab0652 | 6558 | static int nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
7d974794 BS |
6559 | { |
6560 | struct nfs4_exception exception = { }; | |
6561 | int err; | |
6562 | do { | |
377e507d CL |
6563 | err = _nfs41_test_stateid(server, stateid); |
6564 | if (err != -NFS4ERR_DELAY) | |
6565 | break; | |
6566 | nfs4_handle_exception(server, err, &exception); | |
7d974794 BS |
6567 | } while (exception.retry); |
6568 | return err; | |
6569 | } | |
9aeda35f | 6570 | |
1cab0652 | 6571 | static int _nfs4_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f | 6572 | { |
9aeda35f | 6573 | struct nfs41_free_stateid_args args = { |
1cab0652 | 6574 | .stateid = stateid, |
9aeda35f BS |
6575 | }; |
6576 | struct nfs41_free_stateid_res res; | |
6577 | struct rpc_message msg = { | |
6578 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
6579 | .rpc_argp = &args, | |
6580 | .rpc_resp = &res, | |
6581 | }; | |
38527b15 | 6582 | int status; |
9aeda35f | 6583 | |
38527b15 | 6584 | dprintk("NFS call free_stateid %p\n", stateid); |
9d12b216 | 6585 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
38527b15 | 6586 | status = nfs4_call_sync_sequence(server->client, server, &msg, |
377e507d | 6587 | &args.seq_args, &res.seq_res, 1); |
38527b15 CL |
6588 | dprintk("NFS reply free_stateid: %d\n", status); |
6589 | return status; | |
9aeda35f BS |
6590 | } |
6591 | ||
38527b15 CL |
6592 | /** |
6593 | * nfs41_free_stateid - perform a FREE_STATEID operation | |
6594 | * | |
6595 | * @server: server / transport on which to perform the operation | |
6596 | * @stateid: state ID to release | |
6597 | * | |
6598 | * Returns NFS_OK if the server freed "stateid". Otherwise a | |
6599 | * negative NFS4ERR value is returned. | |
6600 | */ | |
1cab0652 | 6601 | static int nfs41_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f BS |
6602 | { |
6603 | struct nfs4_exception exception = { }; | |
6604 | int err; | |
6605 | do { | |
377e507d CL |
6606 | err = _nfs4_free_stateid(server, stateid); |
6607 | if (err != -NFS4ERR_DELAY) | |
6608 | break; | |
6609 | nfs4_handle_exception(server, err, &exception); | |
9aeda35f BS |
6610 | } while (exception.retry); |
6611 | return err; | |
6612 | } | |
36281caa TM |
6613 | |
6614 | static bool nfs41_match_stateid(const nfs4_stateid *s1, | |
6615 | const nfs4_stateid *s2) | |
6616 | { | |
2d2f24ad | 6617 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
6618 | return false; |
6619 | ||
2d2f24ad | 6620 | if (s1->seqid == s2->seqid) |
36281caa | 6621 | return true; |
2d2f24ad | 6622 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
6623 | return true; |
6624 | ||
6625 | return false; | |
6626 | } | |
6627 | ||
557134a3 AA |
6628 | #endif /* CONFIG_NFS_V4_1 */ |
6629 | ||
36281caa TM |
6630 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
6631 | const nfs4_stateid *s2) | |
6632 | { | |
f597c537 | 6633 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
6634 | } |
6635 | ||
6636 | ||
17280175 | 6637 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 6638 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 6639 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
6640 | .recover_open = nfs4_open_reclaim, |
6641 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 6642 | .establish_clid = nfs4_init_clientid, |
90a16617 | 6643 | .get_clid_cred = nfs4_get_setclientid_cred, |
05f4c350 | 6644 | .detect_trunking = nfs40_discover_server_trunking, |
1da177e4 LT |
6645 | }; |
6646 | ||
591d71cb | 6647 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 6648 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
6649 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
6650 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
6651 | .recover_open = nfs4_open_reclaim, | |
6652 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 6653 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6654 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 6655 | .reclaim_complete = nfs41_proc_reclaim_complete, |
05f4c350 | 6656 | .detect_trunking = nfs41_discover_server_trunking, |
591d71cb AA |
6657 | }; |
6658 | #endif /* CONFIG_NFS_V4_1 */ | |
6659 | ||
17280175 | 6660 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
6661 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
6662 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
6663 | .recover_open = nfs4_open_expired, | |
6664 | .recover_lock = nfs4_lock_expired, | |
6665 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 6666 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
6667 | }; |
6668 | ||
6669 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 6670 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 6671 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 6672 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
6673 | .recover_open = nfs41_open_expired, |
6674 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 6675 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6676 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 6677 | }; |
591d71cb | 6678 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 6679 | |
17280175 | 6680 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 6681 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 6682 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 6683 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
6684 | }; |
6685 | ||
6686 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 6687 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 6688 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 6689 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 6690 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
6691 | }; |
6692 | #endif | |
6693 | ||
97dc1359 TM |
6694 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
6695 | .minor_version = 0, | |
6696 | .call_sync = _nfs4_call_sync, | |
36281caa | 6697 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 6698 | .find_root_sec = nfs4_find_root_sec, |
c48f4f35 TM |
6699 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
6700 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
6701 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
6702 | }; |
6703 | ||
6704 | #if defined(CONFIG_NFS_V4_1) | |
6705 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
6706 | .minor_version = 1, | |
6707 | .call_sync = _nfs4_call_sync_session, | |
36281caa | 6708 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 6709 | .find_root_sec = nfs41_find_root_sec, |
c48f4f35 TM |
6710 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
6711 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
6712 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
6713 | }; |
6714 | #endif | |
6715 | ||
97dc1359 TM |
6716 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
6717 | [0] = &nfs_v4_0_minor_ops, | |
6718 | #if defined(CONFIG_NFS_V4_1) | |
6719 | [1] = &nfs_v4_1_minor_ops, | |
6720 | #endif | |
6721 | }; | |
6722 | ||
73a79706 BS |
6723 | const struct inode_operations nfs4_dir_inode_operations = { |
6724 | .create = nfs_create, | |
6725 | .lookup = nfs_lookup, | |
6726 | .atomic_open = nfs_atomic_open, | |
6727 | .link = nfs_link, | |
6728 | .unlink = nfs_unlink, | |
6729 | .symlink = nfs_symlink, | |
6730 | .mkdir = nfs_mkdir, | |
6731 | .rmdir = nfs_rmdir, | |
6732 | .mknod = nfs_mknod, | |
6733 | .rename = nfs_rename, | |
6734 | .permission = nfs_permission, | |
6735 | .getattr = nfs_getattr, | |
6736 | .setattr = nfs_setattr, | |
6737 | .getxattr = generic_getxattr, | |
6738 | .setxattr = generic_setxattr, | |
6739 | .listxattr = generic_listxattr, | |
6740 | .removexattr = generic_removexattr, | |
6741 | }; | |
6742 | ||
92e1d5be | 6743 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
6744 | .permission = nfs_permission, |
6745 | .getattr = nfs_getattr, | |
6746 | .setattr = nfs_setattr, | |
64c2ce8b AK |
6747 | .getxattr = generic_getxattr, |
6748 | .setxattr = generic_setxattr, | |
6749 | .listxattr = generic_listxattr, | |
6750 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
6751 | }; |
6752 | ||
509de811 | 6753 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
6754 | .version = 4, /* protocol version */ |
6755 | .dentry_ops = &nfs4_dentry_operations, | |
6756 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 6757 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 6758 | .file_ops = &nfs4_file_operations, |
1da177e4 | 6759 | .getroot = nfs4_proc_get_root, |
281cad46 | 6760 | .submount = nfs4_submount, |
ff9099f2 | 6761 | .try_mount = nfs4_try_mount, |
1da177e4 LT |
6762 | .getattr = nfs4_proc_getattr, |
6763 | .setattr = nfs4_proc_setattr, | |
6764 | .lookup = nfs4_proc_lookup, | |
6765 | .access = nfs4_proc_access, | |
6766 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
6767 | .create = nfs4_proc_create, |
6768 | .remove = nfs4_proc_remove, | |
6769 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 6770 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 LT |
6771 | .unlink_done = nfs4_proc_unlink_done, |
6772 | .rename = nfs4_proc_rename, | |
d3d4152a | 6773 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 6774 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 6775 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
6776 | .link = nfs4_proc_link, |
6777 | .symlink = nfs4_proc_symlink, | |
6778 | .mkdir = nfs4_proc_mkdir, | |
6779 | .rmdir = nfs4_proc_remove, | |
6780 | .readdir = nfs4_proc_readdir, | |
6781 | .mknod = nfs4_proc_mknod, | |
6782 | .statfs = nfs4_proc_statfs, | |
6783 | .fsinfo = nfs4_proc_fsinfo, | |
6784 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 6785 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
6786 | .decode_dirent = nfs4_decode_dirent, |
6787 | .read_setup = nfs4_proc_read_setup, | |
1abb5088 | 6788 | .read_pageio_init = pnfs_pageio_init_read, |
ea7c3303 | 6789 | .read_rpc_prepare = nfs4_proc_read_rpc_prepare, |
ec06c096 | 6790 | .read_done = nfs4_read_done, |
1da177e4 | 6791 | .write_setup = nfs4_proc_write_setup, |
57208fa7 | 6792 | .write_pageio_init = pnfs_pageio_init_write, |
c6cb80d0 | 6793 | .write_rpc_prepare = nfs4_proc_write_rpc_prepare, |
788e7a89 | 6794 | .write_done = nfs4_write_done, |
1da177e4 | 6795 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 6796 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 6797 | .commit_done = nfs4_commit_done, |
1da177e4 | 6798 | .lock = nfs4_proc_lock, |
e50a1c2e | 6799 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 6800 | .close_context = nfs4_close_context, |
2b484297 | 6801 | .open_context = nfs4_atomic_open, |
011e2a7f | 6802 | .have_delegation = nfs4_have_delegation, |
57ec14c5 | 6803 | .return_delegation = nfs4_inode_return_delegation, |
6663ee7f | 6804 | .alloc_client = nfs4_alloc_client, |
45a52a02 | 6805 | .init_client = nfs4_init_client, |
cdb7eced | 6806 | .free_client = nfs4_free_client, |
1179acc6 BS |
6807 | .create_server = nfs4_create_server, |
6808 | .clone_server = nfs_clone_server, | |
1da177e4 LT |
6809 | }; |
6810 | ||
64c2ce8b AK |
6811 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
6812 | .prefix = XATTR_NAME_NFSV4_ACL, | |
6813 | .list = nfs4_xattr_list_nfs4_acl, | |
6814 | .get = nfs4_xattr_get_nfs4_acl, | |
6815 | .set = nfs4_xattr_set_nfs4_acl, | |
6816 | }; | |
6817 | ||
6818 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
6819 | &nfs4_xattr_nfs4_acl_handler, | |
6820 | NULL | |
6821 | }; | |
6822 | ||
1da177e4 LT |
6823 | /* |
6824 | * Local variables: | |
6825 | * c-basic-offset: 8 | |
6826 | * End: | |
6827 | */ |