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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 | 66 | #include "nfs4session.h" |
de242c0b | 67 | #include "fscache.h" |
1da177e4 LT |
68 | |
69 | #define NFSDBG_FACILITY NFSDBG_PROC | |
70 | ||
2066fe89 | 71 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
72 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
73 | ||
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: | |
30005121 WAA |
96 | case -NFS4ERR_LAYOUTTRYLATER: |
97 | case -NFS4ERR_RECALLCONFLICT: | |
52567b03 | 98 | return -EREMOTEIO; |
7ebb9315 BS |
99 | case -NFS4ERR_WRONGSEC: |
100 | return -EPERM; | |
3ddeb7c5 TM |
101 | case -NFS4ERR_BADOWNER: |
102 | case -NFS4ERR_BADNAME: | |
103 | return -EINVAL; | |
fb13bfa7 TM |
104 | case -NFS4ERR_SHARE_DENIED: |
105 | return -EACCES; | |
f25efd85 SD |
106 | case -NFS4ERR_MINOR_VERS_MISMATCH: |
107 | return -EPROTONOSUPPORT; | |
6168f62c WAA |
108 | case -NFS4ERR_ACCESS: |
109 | return -EACCES; | |
52567b03 | 110 | default: |
1da177e4 | 111 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 112 | __func__, -err); |
52567b03 | 113 | break; |
1da177e4 | 114 | } |
52567b03 | 115 | return -EIO; |
1da177e4 LT |
116 | } |
117 | ||
118 | /* | |
119 | * This is our standard bitmap for GETATTR requests. | |
120 | */ | |
1549210f | 121 | const u32 nfs4_fattr_bitmap[3] = { |
1da177e4 LT |
122 | FATTR4_WORD0_TYPE |
123 | | FATTR4_WORD0_CHANGE | |
124 | | FATTR4_WORD0_SIZE | |
125 | | FATTR4_WORD0_FSID | |
126 | | FATTR4_WORD0_FILEID, | |
127 | FATTR4_WORD1_MODE | |
128 | | FATTR4_WORD1_NUMLINKS | |
129 | | FATTR4_WORD1_OWNER | |
130 | | FATTR4_WORD1_OWNER_GROUP | |
131 | | FATTR4_WORD1_RAWDEV | |
132 | | FATTR4_WORD1_SPACE_USED | |
133 | | FATTR4_WORD1_TIME_ACCESS | |
134 | | FATTR4_WORD1_TIME_METADATA | |
135 | | FATTR4_WORD1_TIME_MODIFY | |
136 | }; | |
137 | ||
1549210f TM |
138 | static const u32 nfs4_pnfs_open_bitmap[3] = { |
139 | FATTR4_WORD0_TYPE | |
140 | | FATTR4_WORD0_CHANGE | |
141 | | FATTR4_WORD0_SIZE | |
142 | | FATTR4_WORD0_FSID | |
143 | | FATTR4_WORD0_FILEID, | |
144 | FATTR4_WORD1_MODE | |
145 | | FATTR4_WORD1_NUMLINKS | |
146 | | FATTR4_WORD1_OWNER | |
147 | | FATTR4_WORD1_OWNER_GROUP | |
148 | | FATTR4_WORD1_RAWDEV | |
149 | | FATTR4_WORD1_SPACE_USED | |
150 | | FATTR4_WORD1_TIME_ACCESS | |
151 | | FATTR4_WORD1_TIME_METADATA | |
152 | | FATTR4_WORD1_TIME_MODIFY, | |
153 | FATTR4_WORD2_MDSTHRESHOLD | |
154 | }; | |
155 | ||
e23008ec AA |
156 | static const u32 nfs4_open_noattr_bitmap[3] = { |
157 | FATTR4_WORD0_TYPE | |
158 | | FATTR4_WORD0_CHANGE | |
159 | | FATTR4_WORD0_FILEID, | |
160 | }; | |
161 | ||
1da177e4 LT |
162 | const u32 nfs4_statfs_bitmap[2] = { |
163 | FATTR4_WORD0_FILES_AVAIL | |
164 | | FATTR4_WORD0_FILES_FREE | |
165 | | FATTR4_WORD0_FILES_TOTAL, | |
166 | FATTR4_WORD1_SPACE_AVAIL | |
167 | | FATTR4_WORD1_SPACE_FREE | |
168 | | FATTR4_WORD1_SPACE_TOTAL | |
169 | }; | |
170 | ||
4ce79717 | 171 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
172 | FATTR4_WORD0_MAXLINK |
173 | | FATTR4_WORD0_MAXNAME, | |
174 | 0 | |
175 | }; | |
176 | ||
dae100c2 | 177 | const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE |
1da177e4 LT |
178 | | FATTR4_WORD0_MAXREAD |
179 | | FATTR4_WORD0_MAXWRITE | |
180 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 181 | FATTR4_WORD1_TIME_DELTA |
dae100c2 FI |
182 | | FATTR4_WORD1_FS_LAYOUT_TYPES, |
183 | FATTR4_WORD2_LAYOUT_BLKSIZE | |
1da177e4 LT |
184 | }; |
185 | ||
830b8e33 MN |
186 | const u32 nfs4_fs_locations_bitmap[2] = { |
187 | FATTR4_WORD0_TYPE | |
188 | | FATTR4_WORD0_CHANGE | |
189 | | FATTR4_WORD0_SIZE | |
190 | | FATTR4_WORD0_FSID | |
191 | | FATTR4_WORD0_FILEID | |
192 | | FATTR4_WORD0_FS_LOCATIONS, | |
193 | FATTR4_WORD1_MODE | |
194 | | FATTR4_WORD1_NUMLINKS | |
195 | | FATTR4_WORD1_OWNER | |
196 | | FATTR4_WORD1_OWNER_GROUP | |
197 | | FATTR4_WORD1_RAWDEV | |
198 | | FATTR4_WORD1_SPACE_USED | |
199 | | FATTR4_WORD1_TIME_ACCESS | |
200 | | FATTR4_WORD1_TIME_METADATA | |
201 | | FATTR4_WORD1_TIME_MODIFY | |
202 | | FATTR4_WORD1_MOUNTED_ON_FILEID | |
203 | }; | |
204 | ||
bc4785cd | 205 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
206 | struct nfs4_readdir_arg *readdir) |
207 | { | |
0dbb4c67 | 208 | __be32 *start, *p; |
1da177e4 | 209 | |
1da177e4 | 210 | if (cookie > 2) { |
b7ef1956 | 211 | readdir->cookie = cookie; |
1da177e4 LT |
212 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
213 | return; | |
214 | } | |
215 | ||
216 | readdir->cookie = 0; | |
217 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
218 | if (cookie == 2) | |
219 | return; | |
220 | ||
221 | /* | |
222 | * NFSv4 servers do not return entries for '.' and '..' | |
223 | * Therefore, we fake these entries here. We let '.' | |
224 | * have cookie 0 and '..' have cookie 1. Note that | |
225 | * when talking to the server, we always send cookie 0 | |
226 | * instead of 1 or 2. | |
227 | */ | |
2b86ce2d | 228 | start = p = kmap_atomic(*readdir->pages); |
1da177e4 LT |
229 | |
230 | if (cookie == 0) { | |
231 | *p++ = xdr_one; /* next */ | |
232 | *p++ = xdr_zero; /* cookie, first word */ | |
233 | *p++ = xdr_one; /* cookie, second word */ | |
234 | *p++ = xdr_one; /* entry len */ | |
235 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
236 | p++; | |
237 | *p++ = xdr_one; /* bitmap length */ | |
238 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
239 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 240 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
241 | } |
242 | ||
243 | *p++ = xdr_one; /* next */ | |
244 | *p++ = xdr_zero; /* cookie, first word */ | |
245 | *p++ = xdr_two; /* cookie, second word */ | |
246 | *p++ = xdr_two; /* entry len */ | |
247 | memcpy(p, "..\0\0", 4); /* entry */ | |
248 | p++; | |
249 | *p++ = xdr_one; /* bitmap length */ | |
250 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
251 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 252 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
253 | |
254 | readdir->pgbase = (char *)p - (char *)start; | |
255 | readdir->count -= readdir->pgbase; | |
2b86ce2d | 256 | kunmap_atomic(start); |
1da177e4 LT |
257 | } |
258 | ||
65de872e TM |
259 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) |
260 | { | |
261 | int res = 0; | |
262 | ||
263 | might_sleep(); | |
264 | ||
265 | if (*timeout <= 0) | |
266 | *timeout = NFS4_POLL_RETRY_MIN; | |
267 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
268 | *timeout = NFS4_POLL_RETRY_MAX; | |
d310310c | 269 | freezable_schedule_timeout_killable(*timeout); |
65de872e TM |
270 | if (fatal_signal_pending(current)) |
271 | res = -ERESTARTSYS; | |
272 | *timeout <<= 1; | |
273 | return res; | |
274 | } | |
275 | ||
276 | /* This is the error handling routine for processes that are allowed | |
277 | * to sleep. | |
278 | */ | |
b064eca2 | 279 | static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
65de872e TM |
280 | { |
281 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 282 | struct nfs4_state *state = exception->state; |
3114ea7a | 283 | struct inode *inode = exception->inode; |
65de872e TM |
284 | int ret = errorcode; |
285 | ||
286 | exception->retry = 0; | |
287 | switch(errorcode) { | |
288 | case 0: | |
289 | return 0; | |
3114ea7a | 290 | case -NFS4ERR_OPENMODE: |
011e2a7f | 291 | if (inode && nfs4_have_delegation(inode, FMODE_READ)) { |
57ec14c5 | 292 | nfs4_inode_return_delegation(inode); |
3114ea7a TM |
293 | exception->retry = 1; |
294 | return 0; | |
295 | } | |
296 | if (state == NULL) | |
297 | break; | |
5d422301 TM |
298 | ret = nfs4_schedule_stateid_recovery(server, state); |
299 | if (ret < 0) | |
300 | break; | |
3114ea7a | 301 | goto wait_on_recovery; |
a1d0b5ee | 302 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
303 | case -NFS4ERR_ADMIN_REVOKED: |
304 | case -NFS4ERR_BAD_STATEID: | |
9e33bed5 TM |
305 | if (state == NULL) |
306 | break; | |
14977489 | 307 | nfs_remove_bad_delegation(state->inode); |
5d422301 TM |
308 | ret = nfs4_schedule_stateid_recovery(server, state); |
309 | if (ret < 0) | |
310 | break; | |
0400a6b0 | 311 | goto wait_on_recovery; |
0ced63d1 | 312 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
313 | if (state != NULL) { |
314 | ret = nfs4_schedule_stateid_recovery(server, state); | |
315 | if (ret < 0) | |
316 | break; | |
317 | } | |
65de872e | 318 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 319 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
320 | nfs4_schedule_lease_recovery(clp); |
321 | goto wait_on_recovery; | |
03391693 | 322 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
323 | case -NFS4ERR_BADSESSION: |
324 | case -NFS4ERR_BADSLOT: | |
325 | case -NFS4ERR_BAD_HIGH_SLOT: | |
326 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
327 | case -NFS4ERR_DEADSESSION: | |
328 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
329 | case -NFS4ERR_SEQ_MISORDERED: | |
330 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
331 | errorcode); | |
9f594791 | 332 | nfs4_schedule_session_recovery(clp->cl_session, errorcode); |
399f11c3 | 333 | goto wait_on_recovery; |
03391693 | 334 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 335 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
336 | if (exception->timeout > HZ) { |
337 | /* We have retried a decent amount, time to | |
338 | * fail | |
339 | */ | |
340 | ret = -EBUSY; | |
341 | break; | |
342 | } | |
65de872e TM |
343 | case -NFS4ERR_GRACE: |
344 | case -NFS4ERR_DELAY: | |
345 | ret = nfs4_delay(server->client, &exception->timeout); | |
346 | if (ret != 0) | |
347 | break; | |
a8a4ae3a | 348 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
349 | case -NFS4ERR_OLD_STATEID: |
350 | exception->retry = 1; | |
b064eca2 TM |
351 | break; |
352 | case -NFS4ERR_BADOWNER: | |
353 | /* The following works around a Linux server bug! */ | |
354 | case -NFS4ERR_BADNAME: | |
355 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
356 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
357 | exception->retry = 1; | |
358 | printk(KERN_WARNING "NFS: v4 server %s " | |
359 | "does not accept raw " | |
360 | "uid/gids. " | |
361 | "Reenabling the idmapper.\n", | |
362 | server->nfs_client->cl_hostname); | |
363 | } | |
65de872e TM |
364 | } |
365 | /* We failed to handle the error */ | |
366 | return nfs4_map_errors(ret); | |
0400a6b0 | 367 | wait_on_recovery: |
a2c0b9e2 TM |
368 | ret = nfs4_wait_clnt_recover(clp); |
369 | if (ret == 0) | |
370 | exception->retry = 1; | |
371 | return ret; | |
65de872e TM |
372 | } |
373 | ||
374 | ||
452e9352 | 375 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 376 | { |
1da177e4 LT |
377 | spin_lock(&clp->cl_lock); |
378 | if (time_before(clp->cl_last_renewal,timestamp)) | |
379 | clp->cl_last_renewal = timestamp; | |
380 | spin_unlock(&clp->cl_lock); | |
381 | } | |
382 | ||
452e9352 TM |
383 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
384 | { | |
385 | do_renew_lease(server->nfs_client, timestamp); | |
386 | } | |
387 | ||
cccef3b9 AA |
388 | #if defined(CONFIG_NFS_V4_1) |
389 | ||
d185a334 | 390 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 | 391 | { |
e3725ec0 | 392 | struct nfs4_session *session; |
13615871 | 393 | struct nfs4_slot_table *tbl; |
c10e4498 | 394 | bool send_new_highest_used_slotid = false; |
13615871 | 395 | |
dfb4f309 | 396 | if (!res->sr_slot) { |
13615871 AA |
397 | /* just wake up the next guy waiting since |
398 | * we may have not consumed a slot after all */ | |
691daf3b | 399 | dprintk("%s: No slot\n", __func__); |
35dc1d74 | 400 | return; |
13615871 | 401 | } |
e3725ec0 TM |
402 | tbl = res->sr_slot->table; |
403 | session = tbl->session; | |
ea028ac9 | 404 | |
35dc1d74 | 405 | spin_lock(&tbl->slot_tbl_lock); |
c10e4498 TM |
406 | /* Be nice to the server: try to ensure that the last transmitted |
407 | * value for highest_user_slotid <= target_highest_slotid | |
408 | */ | |
409 | if (tbl->highest_used_slotid > tbl->target_highest_slotid) | |
410 | send_new_highest_used_slotid = true; | |
411 | ||
b75ad4cd TM |
412 | if (nfs41_wake_and_assign_slot(tbl, res->sr_slot)) { |
413 | send_new_highest_used_slotid = false; | |
414 | goto out_unlock; | |
415 | } | |
f4af6e2a | 416 | nfs4_free_slot(tbl, res->sr_slot); |
c10e4498 TM |
417 | |
418 | if (tbl->highest_used_slotid != NFS4_NO_SLOT) | |
419 | send_new_highest_used_slotid = false; | |
b75ad4cd | 420 | out_unlock: |
35dc1d74 | 421 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 422 | res->sr_slot = NULL; |
c10e4498 TM |
423 | if (send_new_highest_used_slotid) |
424 | nfs41_server_notify_highest_slotid_update(session->clp); | |
13615871 AA |
425 | } |
426 | ||
14516c3a | 427 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c | 428 | { |
e3725ec0 | 429 | struct nfs4_session *session; |
933602e3 | 430 | struct nfs4_slot *slot; |
14516c3a | 431 | struct nfs_client *clp; |
ac20d163 | 432 | bool interrupted = false; |
85563073 | 433 | int ret = 1; |
b0df806c | 434 | |
468f8613 BS |
435 | /* don't increment the sequence number if the task wasn't sent */ |
436 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
437 | goto out; |
438 | ||
933602e3 | 439 | slot = res->sr_slot; |
e3725ec0 | 440 | session = slot->table->session; |
933602e3 | 441 | |
ac20d163 TM |
442 | if (slot->interrupted) { |
443 | slot->interrupted = 0; | |
444 | interrupted = true; | |
445 | } | |
446 | ||
691daf3b | 447 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
448 | switch (res->sr_status) { |
449 | case 0: | |
b0df806c | 450 | /* Update the slot's sequence and clientid lease timer */ |
933602e3 | 451 | ++slot->seq_nr; |
e3725ec0 | 452 | clp = session->clp; |
8e63b6a8 | 453 | do_renew_lease(clp, res->sr_timestamp); |
0629e370 | 454 | /* Check sequence flags */ |
b4410c2f TM |
455 | if (res->sr_status_flags != 0) |
456 | nfs4_schedule_lease_recovery(clp); | |
464ee9f9 | 457 | nfs41_update_target_slotid(slot->table, slot, res); |
14516c3a | 458 | break; |
ac20d163 TM |
459 | case 1: |
460 | /* | |
461 | * sr_status remains 1 if an RPC level error occurred. | |
462 | * The server may or may not have processed the sequence | |
463 | * operation.. | |
464 | * Mark the slot as having hosted an interrupted RPC call. | |
465 | */ | |
466 | slot->interrupted = 1; | |
467 | goto out; | |
14516c3a TM |
468 | case -NFS4ERR_DELAY: |
469 | /* The server detected a resend of the RPC call and | |
470 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
471 | * of RFC5661. | |
472 | */ | |
df2fabff | 473 | dprintk("%s: slot=%u seq=%u: Operation in progress\n", |
dfb4f309 | 474 | __func__, |
df2fabff | 475 | slot->slot_nr, |
933602e3 | 476 | slot->seq_nr); |
14516c3a | 477 | goto out_retry; |
85563073 TM |
478 | case -NFS4ERR_BADSLOT: |
479 | /* | |
480 | * The slot id we used was probably retired. Try again | |
481 | * using a different slot id. | |
482 | */ | |
e8794440 TM |
483 | goto retry_nowait; |
484 | case -NFS4ERR_SEQ_MISORDERED: | |
ac20d163 TM |
485 | /* |
486 | * Was the last operation on this sequence interrupted? | |
487 | * If so, retry after bumping the sequence number. | |
488 | */ | |
489 | if (interrupted) { | |
490 | ++slot->seq_nr; | |
491 | goto retry_nowait; | |
492 | } | |
e8794440 TM |
493 | /* |
494 | * Could this slot have been previously retired? | |
495 | * If so, then the server may be expecting seq_nr = 1! | |
496 | */ | |
8e63b6a8 TM |
497 | if (slot->seq_nr != 1) { |
498 | slot->seq_nr = 1; | |
499 | goto retry_nowait; | |
500 | } | |
501 | break; | |
e8794440 TM |
502 | case -NFS4ERR_SEQ_FALSE_RETRY: |
503 | ++slot->seq_nr; | |
504 | goto retry_nowait; | |
14516c3a TM |
505 | default: |
506 | /* Just update the slot sequence no. */ | |
933602e3 | 507 | ++slot->seq_nr; |
b0df806c AA |
508 | } |
509 | out: | |
510 | /* The session may be reset by one of the error handlers. */ | |
511 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 512 | nfs41_sequence_free_slot(res); |
85563073 | 513 | return ret; |
e8794440 TM |
514 | retry_nowait: |
515 | if (rpc_restart_call_prepare(task)) { | |
516 | task->tk_status = 0; | |
517 | ret = 0; | |
518 | } | |
519 | goto out; | |
14516c3a | 520 | out_retry: |
d05dd4e9 | 521 | if (!rpc_restart_call(task)) |
14516c3a TM |
522 | goto out; |
523 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
524 | return 0; | |
b0df806c AA |
525 | } |
526 | ||
14516c3a TM |
527 | static int nfs4_sequence_done(struct rpc_task *task, |
528 | struct nfs4_sequence_res *res) | |
df896455 | 529 | { |
e3725ec0 | 530 | if (res->sr_slot == NULL) |
14516c3a TM |
531 | return 1; |
532 | return nfs41_sequence_done(task, res); | |
df896455 TM |
533 | } |
534 | ||
9d12b216 TM |
535 | static void nfs41_init_sequence(struct nfs4_sequence_args *args, |
536 | struct nfs4_sequence_res *res, int cache_reply) | |
537 | { | |
2b2fa717 | 538 | args->sa_slot = NULL; |
9d12b216 | 539 | args->sa_cache_this = 0; |
8fe72bac | 540 | args->sa_privileged = 0; |
9d12b216 TM |
541 | if (cache_reply) |
542 | args->sa_cache_this = 1; | |
9d12b216 TM |
543 | res->sr_slot = NULL; |
544 | } | |
545 | ||
8fe72bac TM |
546 | static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args) |
547 | { | |
548 | args->sa_privileged = 1; | |
549 | } | |
550 | ||
dc70d7b3 | 551 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
552 | struct nfs4_sequence_args *args, |
553 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
554 | struct rpc_task *task) |
555 | { | |
fbcd4abc AA |
556 | struct nfs4_slot *slot; |
557 | struct nfs4_slot_table *tbl; | |
fbcd4abc AA |
558 | |
559 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 560 | /* slot already allocated? */ |
dfb4f309 | 561 | if (res->sr_slot != NULL) |
d9afbd1b | 562 | goto out_success; |
ce5039c1 | 563 | |
fbcd4abc AA |
564 | tbl = &session->fc_slot_table; |
565 | ||
69d206b5 TM |
566 | task->tk_timeout = 0; |
567 | ||
fbcd4abc | 568 | spin_lock(&tbl->slot_tbl_lock); |
a2118c33 | 569 | if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) && |
8fe72bac | 570 | !args->sa_privileged) { |
0b1c8fc4 | 571 | /* The state manager will wait until the slot table is empty */ |
0b1c8fc4 | 572 | dprintk("%s session is draining\n", __func__); |
7b939a3f | 573 | goto out_sleep; |
689cf5c1 AB |
574 | } |
575 | ||
2dc03b7f | 576 | slot = nfs4_alloc_slot(tbl); |
69d206b5 TM |
577 | if (IS_ERR(slot)) { |
578 | /* If out of memory, try again in 1/4 second */ | |
579 | if (slot == ERR_PTR(-ENOMEM)) | |
580 | task->tk_timeout = HZ >> 2; | |
fbcd4abc | 581 | dprintk("<-- %s: no free slots\n", __func__); |
7b939a3f | 582 | goto out_sleep; |
fbcd4abc AA |
583 | } |
584 | spin_unlock(&tbl->slot_tbl_lock); | |
585 | ||
2b2fa717 | 586 | args->sa_slot = slot; |
fbcd4abc | 587 | |
2dc03b7f TM |
588 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, |
589 | slot->slot_nr, slot->seq_nr); | |
fbcd4abc | 590 | |
dfb4f309 | 591 | res->sr_slot = slot; |
8e63b6a8 | 592 | res->sr_timestamp = jiffies; |
2a6e26cd | 593 | res->sr_status_flags = 0; |
fbcd4abc AA |
594 | /* |
595 | * sr_status is only set in decode_sequence, and so will remain | |
596 | * set to 1 if an rpc level failure occurs. | |
597 | */ | |
598 | res->sr_status = 1; | |
d9afbd1b TM |
599 | out_success: |
600 | rpc_call_start(task); | |
ce5039c1 | 601 | return 0; |
7b939a3f | 602 | out_sleep: |
8fe72bac TM |
603 | /* Privileged tasks are queued with top priority */ |
604 | if (args->sa_privileged) | |
1e1093c7 TM |
605 | rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, |
606 | NULL, RPC_PRIORITY_PRIVILEGED); | |
607 | else | |
608 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
7b939a3f TM |
609 | spin_unlock(&tbl->slot_tbl_lock); |
610 | return -EAGAIN; | |
ce5039c1 | 611 | } |
dc70d7b3 | 612 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 613 | |
035168ab | 614 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
615 | struct nfs4_sequence_args *args, |
616 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
617 | struct rpc_task *task) |
618 | { | |
035168ab | 619 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
620 | int ret = 0; |
621 | ||
d9afbd1b TM |
622 | if (session == NULL) { |
623 | rpc_call_start(task); | |
035168ab | 624 | goto out; |
d9afbd1b | 625 | } |
035168ab | 626 | |
df2fabff | 627 | dprintk("--> %s clp %p session %p sr_slot %d\n", |
dfb4f309 | 628 | __func__, session->clp, session, res->sr_slot ? |
df2fabff | 629 | res->sr_slot->slot_nr : -1); |
ce5039c1 | 630 | |
9d12b216 | 631 | ret = nfs41_setup_sequence(session, args, res, task); |
ce5039c1 AA |
632 | out: |
633 | dprintk("<-- %s status=%d\n", __func__, ret); | |
634 | return ret; | |
635 | } | |
636 | ||
637 | struct nfs41_call_sync_data { | |
035168ab | 638 | const struct nfs_server *seq_server; |
ce5039c1 AA |
639 | struct nfs4_sequence_args *seq_args; |
640 | struct nfs4_sequence_res *seq_res; | |
ce5039c1 AA |
641 | }; |
642 | ||
643 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
644 | { | |
645 | struct nfs41_call_sync_data *data = calldata; | |
6ba7db34 | 646 | struct nfs4_session *session = nfs4_get_session(data->seq_server); |
ce5039c1 | 647 | |
035168ab TM |
648 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
649 | ||
d9afbd1b | 650 | nfs41_setup_sequence(session, data->seq_args, data->seq_res, task); |
ce5039c1 AA |
651 | } |
652 | ||
69ab40c4 AA |
653 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
654 | { | |
655 | struct nfs41_call_sync_data *data = calldata; | |
656 | ||
14516c3a | 657 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
658 | } |
659 | ||
17280175 | 660 | static const struct rpc_call_ops nfs41_call_sync_ops = { |
ce5039c1 | 661 | .rpc_call_prepare = nfs41_call_sync_prepare, |
69ab40c4 | 662 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
663 | }; |
664 | ||
7c513058 BS |
665 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
666 | struct nfs_server *server, | |
ce5039c1 AA |
667 | struct rpc_message *msg, |
668 | struct nfs4_sequence_args *args, | |
8fe72bac | 669 | struct nfs4_sequence_res *res) |
ce5039c1 AA |
670 | { |
671 | int ret; | |
672 | struct rpc_task *task; | |
673 | struct nfs41_call_sync_data data = { | |
035168ab | 674 | .seq_server = server, |
ce5039c1 AA |
675 | .seq_args = args, |
676 | .seq_res = res, | |
ce5039c1 AA |
677 | }; |
678 | struct rpc_task_setup task_setup = { | |
7c513058 | 679 | .rpc_client = clnt, |
ce5039c1 AA |
680 | .rpc_message = msg, |
681 | .callback_ops = &nfs41_call_sync_ops, | |
682 | .callback_data = &data | |
683 | }; | |
684 | ||
ce5039c1 AA |
685 | task = rpc_run_task(&task_setup); |
686 | if (IS_ERR(task)) | |
687 | ret = PTR_ERR(task); | |
688 | else { | |
689 | ret = task->tk_status; | |
690 | rpc_put_task(task); | |
691 | } | |
692 | return ret; | |
693 | } | |
694 | ||
df896455 | 695 | #else |
8fe72bac | 696 | static |
9d12b216 TM |
697 | void nfs41_init_sequence(struct nfs4_sequence_args *args, |
698 | struct nfs4_sequence_res *res, int cache_reply) | |
699 | { | |
700 | } | |
701 | ||
8fe72bac TM |
702 | static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args) |
703 | { | |
704 | } | |
705 | ||
706 | ||
14516c3a TM |
707 | static int nfs4_sequence_done(struct rpc_task *task, |
708 | struct nfs4_sequence_res *res) | |
df896455 | 709 | { |
14516c3a | 710 | return 1; |
df896455 | 711 | } |
cccef3b9 AA |
712 | #endif /* CONFIG_NFS_V4_1 */ |
713 | ||
fd0c0953 | 714 | static |
7c513058 BS |
715 | int _nfs4_call_sync(struct rpc_clnt *clnt, |
716 | struct nfs_server *server, | |
cccef3b9 AA |
717 | struct rpc_message *msg, |
718 | struct nfs4_sequence_args *args, | |
fd0c0953 | 719 | struct nfs4_sequence_res *res) |
cccef3b9 | 720 | { |
7c513058 | 721 | return rpc_call_sync(clnt, msg, 0); |
cccef3b9 AA |
722 | } |
723 | ||
fd0c0953 | 724 | static |
7c513058 BS |
725 | int nfs4_call_sync(struct rpc_clnt *clnt, |
726 | struct nfs_server *server, | |
e73b83f2 BS |
727 | struct rpc_message *msg, |
728 | struct nfs4_sequence_args *args, | |
729 | struct nfs4_sequence_res *res, | |
730 | int cache_reply) | |
731 | { | |
fd0c0953 | 732 | nfs41_init_sequence(args, res, cache_reply); |
7c513058 | 733 | return server->nfs_client->cl_mvops->call_sync(clnt, server, msg, |
fd0c0953 | 734 | args, res); |
e73b83f2 | 735 | } |
cccef3b9 | 736 | |
38478b24 | 737 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 738 | { |
38478b24 | 739 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 740 | |
38478b24 | 741 | spin_lock(&dir->i_lock); |
359d7d1c | 742 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA; |
a9a4a87a | 743 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 744 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 745 | dir->i_version = cinfo->after; |
de242c0b | 746 | nfs_fscache_invalidate(dir); |
38478b24 | 747 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
748 | } |
749 | ||
e56e0b78 | 750 | struct nfs4_opendata { |
c6d00e63 | 751 | struct kref kref; |
e56e0b78 TM |
752 | struct nfs_openargs o_arg; |
753 | struct nfs_openres o_res; | |
cdd4e68b TM |
754 | struct nfs_open_confirmargs c_arg; |
755 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
756 | struct nfs4_string owner_name; |
757 | struct nfs4_string group_name; | |
e56e0b78 | 758 | struct nfs_fattr f_attr; |
e56e0b78 | 759 | struct dentry *dir; |
82a2c1b7 | 760 | struct dentry *dentry; |
e56e0b78 | 761 | struct nfs4_state_owner *owner; |
aac00a8d | 762 | struct nfs4_state *state; |
e56e0b78 | 763 | struct iattr attrs; |
26e976a8 | 764 | unsigned long timestamp; |
3e309914 | 765 | unsigned int rpc_done : 1; |
24ac23ab TM |
766 | int rpc_status; |
767 | int cancelled; | |
e56e0b78 TM |
768 | }; |
769 | ||
2ced46c2 TM |
770 | |
771 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
772 | { | |
773 | p->o_res.f_attr = &p->f_attr; | |
c1d51931 TM |
774 | p->o_res.seqid = p->o_arg.seqid; |
775 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 | 776 | p->o_res.server = p->o_arg.server; |
5f657530 | 777 | p->o_res.access_request = p->o_arg.access; |
2ced46c2 | 778 | nfs_fattr_init(&p->f_attr); |
6926afd1 | 779 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
780 | } |
781 | ||
82a2c1b7 | 782 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 783 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be TM |
784 | const struct iattr *attrs, |
785 | gfp_t gfp_mask) | |
e56e0b78 | 786 | { |
82a2c1b7 | 787 | struct dentry *parent = dget_parent(dentry); |
e56e0b78 TM |
788 | struct inode *dir = parent->d_inode; |
789 | struct nfs_server *server = NFS_SERVER(dir); | |
790 | struct nfs4_opendata *p; | |
791 | ||
8535b2be | 792 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
793 | if (p == NULL) |
794 | goto err; | |
8535b2be | 795 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 TM |
796 | if (p->o_arg.seqid == NULL) |
797 | goto err_free; | |
82a2c1b7 AV |
798 | nfs_sb_active(dentry->d_sb); |
799 | p->dentry = dget(dentry); | |
e56e0b78 TM |
800 | p->dir = parent; |
801 | p->owner = sp; | |
802 | atomic_inc(&sp->so_count); | |
803 | p->o_arg.fh = NFS_FH(dir); | |
dc0b027d TM |
804 | p->o_arg.open_flags = flags; |
805 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
ae2bb032 WAA |
806 | /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS |
807 | * will return permission denied for all bits until close */ | |
808 | if (!(flags & O_EXCL)) { | |
809 | /* ask server to check for all possible rights as results | |
810 | * are cached */ | |
811 | p->o_arg.access = NFS4_ACCESS_READ | NFS4_ACCESS_MODIFY | | |
812 | NFS4_ACCESS_EXTEND | NFS4_ACCESS_EXECUTE; | |
ae2bb032 | 813 | } |
7539bbab | 814 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
95b72eb0 TM |
815 | p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time); |
816 | p->o_arg.id.uniquifier = sp->so_seqid.owner_id; | |
82a2c1b7 | 817 | p->o_arg.name = &dentry->d_name; |
e56e0b78 TM |
818 | p->o_arg.server = server; |
819 | p->o_arg.bitmask = server->attr_bitmask; | |
1549210f | 820 | p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0]; |
e56e0b78 | 821 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; |
536e43d1 | 822 | if (attrs != NULL && attrs->ia_valid != 0) { |
cd93710e | 823 | __be32 verf[2]; |
d77d76ff | 824 | |
e56e0b78 TM |
825 | p->o_arg.u.attrs = &p->attrs; |
826 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
cd93710e CL |
827 | |
828 | verf[0] = jiffies; | |
829 | verf[1] = current->pid; | |
830 | memcpy(p->o_arg.u.verifier.data, verf, | |
831 | sizeof(p->o_arg.u.verifier.data)); | |
e56e0b78 | 832 | } |
cdd4e68b TM |
833 | p->c_arg.fh = &p->o_res.fh; |
834 | p->c_arg.stateid = &p->o_res.stateid; | |
835 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 836 | nfs4_init_opendata_res(p); |
c6d00e63 | 837 | kref_init(&p->kref); |
e56e0b78 TM |
838 | return p; |
839 | err_free: | |
840 | kfree(p); | |
841 | err: | |
842 | dput(parent); | |
843 | return NULL; | |
844 | } | |
845 | ||
c6d00e63 | 846 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 847 | { |
c6d00e63 TM |
848 | struct nfs4_opendata *p = container_of(kref, |
849 | struct nfs4_opendata, kref); | |
82a2c1b7 | 850 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
851 | |
852 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
853 | if (p->state != NULL) |
854 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
855 | nfs4_put_state_owner(p->owner); |
856 | dput(p->dir); | |
82a2c1b7 AV |
857 | dput(p->dentry); |
858 | nfs_sb_deactive(sb); | |
6926afd1 | 859 | nfs_fattr_free_names(&p->f_attr); |
c6d00e63 TM |
860 | kfree(p); |
861 | } | |
862 | ||
863 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
864 | { | |
865 | if (p != NULL) | |
866 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
867 | } |
868 | ||
06f814a3 TM |
869 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
870 | { | |
06f814a3 TM |
871 | int ret; |
872 | ||
06f814a3 | 873 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
874 | return ret; |
875 | } | |
876 | ||
dc0b027d | 877 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
878 | { |
879 | int ret = 0; | |
dc0b027d | 880 | |
536e43d1 | 881 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
882 | goto out; |
883 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 884 | case FMODE_READ: |
88069f77 TM |
885 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
886 | && state->n_rdonly != 0; | |
6ee41268 TM |
887 | break; |
888 | case FMODE_WRITE: | |
88069f77 TM |
889 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
890 | && state->n_wronly != 0; | |
6ee41268 TM |
891 | break; |
892 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
893 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
894 | && state->n_rdwr != 0; | |
6ee41268 | 895 | } |
dc0b027d | 896 | out: |
6ee41268 TM |
897 | return ret; |
898 | } | |
899 | ||
dc0b027d | 900 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 901 | { |
652f89f6 TM |
902 | if (delegation == NULL) |
903 | return 0; | |
dc0b027d | 904 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 905 | return 0; |
15c831bf | 906 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 907 | return 0; |
d25be546 TM |
908 | if (test_bit(NFS_DELEGATION_RETURNING, &delegation->flags)) |
909 | return 0; | |
b7391f44 | 910 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
911 | return 1; |
912 | } | |
913 | ||
dc0b027d | 914 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 915 | { |
dc0b027d | 916 | switch (fmode) { |
e7616923 TM |
917 | case FMODE_WRITE: |
918 | state->n_wronly++; | |
919 | break; | |
920 | case FMODE_READ: | |
921 | state->n_rdonly++; | |
922 | break; | |
923 | case FMODE_READ|FMODE_WRITE: | |
924 | state->n_rdwr++; | |
925 | } | |
dc0b027d | 926 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
927 | } |
928 | ||
dc0b027d | 929 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
930 | { |
931 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
f597c537 TM |
932 | nfs4_stateid_copy(&state->stateid, stateid); |
933 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
dc0b027d | 934 | switch (fmode) { |
003707c7 TM |
935 | case FMODE_READ: |
936 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
937 | break; | |
938 | case FMODE_WRITE: | |
939 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
940 | break; | |
941 | case FMODE_READ|FMODE_WRITE: | |
942 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
943 | } | |
e7616923 TM |
944 | } |
945 | ||
dc0b027d | 946 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 947 | { |
8bda4e4c | 948 | write_seqlock(&state->seqlock); |
dc0b027d | 949 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 950 | write_sequnlock(&state->seqlock); |
003707c7 TM |
951 | } |
952 | ||
dc0b027d | 953 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 954 | { |
8bda4e4c TM |
955 | /* |
956 | * Protect the call to nfs4_state_set_mode_locked and | |
957 | * serialise the stateid update | |
958 | */ | |
959 | write_seqlock(&state->seqlock); | |
003707c7 | 960 | if (deleg_stateid != NULL) { |
f597c537 | 961 | nfs4_stateid_copy(&state->stateid, deleg_stateid); |
003707c7 TM |
962 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
963 | } | |
964 | if (open_stateid != NULL) | |
dc0b027d | 965 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
966 | write_sequnlock(&state->seqlock); |
967 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 968 | update_open_stateflags(state, fmode); |
ec073428 | 969 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
970 | } |
971 | ||
dc0b027d | 972 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
973 | { |
974 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
975 | struct nfs_delegation *deleg_cur; | |
976 | int ret = 0; | |
977 | ||
dc0b027d | 978 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
979 | |
980 | rcu_read_lock(); | |
981 | deleg_cur = rcu_dereference(nfsi->delegation); | |
982 | if (deleg_cur == NULL) | |
983 | goto no_delegation; | |
984 | ||
985 | spin_lock(&deleg_cur->lock); | |
986 | if (nfsi->delegation != deleg_cur || | |
d25be546 | 987 | test_bit(NFS_DELEGATION_RETURNING, &deleg_cur->flags) || |
dc0b027d | 988 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
989 | goto no_delegation_unlock; |
990 | ||
991 | if (delegation == NULL) | |
992 | delegation = &deleg_cur->stateid; | |
f597c537 | 993 | else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) |
34310430 TM |
994 | goto no_delegation_unlock; |
995 | ||
b7391f44 | 996 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 997 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
998 | ret = 1; |
999 | no_delegation_unlock: | |
1000 | spin_unlock(&deleg_cur->lock); | |
1001 | no_delegation: | |
1002 | rcu_read_unlock(); | |
1003 | ||
1004 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 1005 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
1006 | ret = 1; |
1007 | } | |
1008 | ||
1009 | return ret; | |
1010 | } | |
1011 | ||
1012 | ||
dc0b027d | 1013 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1014 | { |
1015 | struct nfs_delegation *delegation; | |
1016 | ||
1017 | rcu_read_lock(); | |
1018 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1019 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1020 | rcu_read_unlock(); |
1021 | return; | |
1022 | } | |
1023 | rcu_read_unlock(); | |
57ec14c5 | 1024 | nfs4_inode_return_delegation(inode); |
aac00a8d TM |
1025 | } |
1026 | ||
6ee41268 | 1027 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1028 | { |
1029 | struct nfs4_state *state = opendata->state; | |
1030 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1031 | struct nfs_delegation *delegation; | |
536e43d1 | 1032 | int open_mode = opendata->o_arg.open_flags & (O_EXCL|O_TRUNC); |
dc0b027d | 1033 | fmode_t fmode = opendata->o_arg.fmode; |
aac00a8d TM |
1034 | nfs4_stateid stateid; |
1035 | int ret = -EAGAIN; | |
1036 | ||
aac00a8d | 1037 | for (;;) { |
dc0b027d | 1038 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 1039 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
1040 | if (can_open_cached(state, fmode, open_mode)) { |
1041 | update_open_stateflags(state, fmode); | |
6ee41268 | 1042 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
1043 | goto out_return_state; |
1044 | } | |
1045 | spin_unlock(&state->owner->so_lock); | |
1046 | } | |
34310430 TM |
1047 | rcu_read_lock(); |
1048 | delegation = rcu_dereference(nfsi->delegation); | |
652f89f6 | 1049 | if (!can_open_delegated(delegation, fmode)) { |
34310430 | 1050 | rcu_read_unlock(); |
aac00a8d | 1051 | break; |
34310430 | 1052 | } |
aac00a8d | 1053 | /* Save the delegation */ |
f597c537 | 1054 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1055 | rcu_read_unlock(); |
af22f94a | 1056 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
1057 | if (ret != 0) |
1058 | goto out; | |
1059 | ret = -EAGAIN; | |
34310430 TM |
1060 | |
1061 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1062 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1063 | goto out_return_state; |
aac00a8d | 1064 | } |
aac00a8d TM |
1065 | out: |
1066 | return ERR_PTR(ret); | |
1067 | out_return_state: | |
1068 | atomic_inc(&state->count); | |
1069 | return state; | |
1070 | } | |
1071 | ||
e23008ec AA |
1072 | static void |
1073 | nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state) | |
1074 | { | |
1075 | struct nfs_client *clp = NFS_SERVER(state->inode)->nfs_client; | |
1076 | struct nfs_delegation *delegation; | |
1077 | int delegation_flags = 0; | |
1078 | ||
1079 | rcu_read_lock(); | |
1080 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
1081 | if (delegation) | |
1082 | delegation_flags = delegation->flags; | |
1083 | rcu_read_unlock(); | |
1084 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) { | |
1085 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " | |
1086 | "returning a delegation for " | |
1087 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
1088 | clp->cl_hostname); | |
1089 | } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) | |
1090 | nfs_inode_set_delegation(state->inode, | |
1091 | data->owner->so_cred, | |
1092 | &data->o_res); | |
1093 | else | |
1094 | nfs_inode_reclaim_delegation(state->inode, | |
1095 | data->owner->so_cred, | |
1096 | &data->o_res); | |
1097 | } | |
1098 | ||
1099 | /* | |
1100 | * Check the inode attributes against the CLAIM_PREVIOUS returned attributes | |
1101 | * and update the nfs4_state. | |
1102 | */ | |
1103 | static struct nfs4_state * | |
1104 | _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data) | |
1105 | { | |
1106 | struct inode *inode = data->state->inode; | |
1107 | struct nfs4_state *state = data->state; | |
1108 | int ret; | |
1109 | ||
1110 | if (!data->rpc_done) { | |
1111 | ret = data->rpc_status; | |
1112 | goto err; | |
1113 | } | |
1114 | ||
1115 | ret = -ESTALE; | |
1116 | if (!(data->f_attr.valid & NFS_ATTR_FATTR_TYPE) || | |
1117 | !(data->f_attr.valid & NFS_ATTR_FATTR_FILEID) || | |
1118 | !(data->f_attr.valid & NFS_ATTR_FATTR_CHANGE)) | |
1119 | goto err; | |
1120 | ||
1121 | ret = -ENOMEM; | |
1122 | state = nfs4_get_open_state(inode, data->owner); | |
1123 | if (state == NULL) | |
1124 | goto err; | |
1125 | ||
1126 | ret = nfs_refresh_inode(inode, &data->f_attr); | |
1127 | if (ret) | |
1128 | goto err; | |
1129 | ||
1130 | if (data->o_res.delegation_type != 0) | |
1131 | nfs4_opendata_check_deleg(data, state); | |
1132 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
1133 | data->o_arg.fmode); | |
1134 | ||
1135 | return state; | |
1136 | err: | |
1137 | return ERR_PTR(ret); | |
1138 | ||
1139 | } | |
1140 | ||
1141 | static struct nfs4_state * | |
1142 | _nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
24ac23ab TM |
1143 | { |
1144 | struct inode *inode; | |
1145 | struct nfs4_state *state = NULL; | |
1b370bc2 | 1146 | int ret; |
24ac23ab | 1147 | |
aac00a8d | 1148 | if (!data->rpc_done) { |
6ee41268 | 1149 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1150 | goto out; |
1151 | } | |
1152 | ||
1b370bc2 | 1153 | ret = -EAGAIN; |
24ac23ab | 1154 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1155 | goto err; |
24ac23ab | 1156 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 1157 | ret = PTR_ERR(inode); |
03f28e3a | 1158 | if (IS_ERR(inode)) |
1b370bc2 TM |
1159 | goto err; |
1160 | ret = -ENOMEM; | |
24ac23ab TM |
1161 | state = nfs4_get_open_state(inode, data->owner); |
1162 | if (state == NULL) | |
1b370bc2 | 1163 | goto err_put_inode; |
e23008ec AA |
1164 | if (data->o_res.delegation_type != 0) |
1165 | nfs4_opendata_check_deleg(data, state); | |
34310430 | 1166 | update_open_stateid(state, &data->o_res.stateid, NULL, |
dc0b027d | 1167 | data->o_arg.fmode); |
24ac23ab | 1168 | iput(inode); |
aac00a8d | 1169 | out: |
7aa262b5 | 1170 | nfs_release_seqid(data->o_arg.seqid); |
24ac23ab | 1171 | return state; |
1b370bc2 TM |
1172 | err_put_inode: |
1173 | iput(inode); | |
1174 | err: | |
1175 | return ERR_PTR(ret); | |
24ac23ab TM |
1176 | } |
1177 | ||
e23008ec AA |
1178 | static struct nfs4_state * |
1179 | nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
1180 | { | |
1181 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) | |
1182 | return _nfs4_opendata_reclaim_to_nfs4_state(data); | |
1183 | return _nfs4_opendata_to_nfs4_state(data); | |
1184 | } | |
1185 | ||
864472e9 TM |
1186 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1187 | { | |
1188 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1189 | struct nfs_open_context *ctx; | |
1190 | ||
1191 | spin_lock(&state->inode->i_lock); | |
1192 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1193 | if (ctx->state != state) | |
1194 | continue; | |
1195 | get_nfs_open_context(ctx); | |
1196 | spin_unlock(&state->inode->i_lock); | |
1197 | return ctx; | |
1198 | } | |
1199 | spin_unlock(&state->inode->i_lock); | |
1200 | return ERR_PTR(-ENOENT); | |
1201 | } | |
1202 | ||
6f220ed5 TM |
1203 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
1204 | { | |
1205 | struct nfs4_opendata *opendata; | |
1206 | ||
3d4ff43d | 1207 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, NULL, GFP_NOFS); |
6f220ed5 TM |
1208 | if (opendata == NULL) |
1209 | return ERR_PTR(-ENOMEM); | |
1210 | opendata->state = state; | |
1211 | atomic_inc(&state->count); | |
1212 | return opendata; | |
1213 | } | |
1214 | ||
dc0b027d | 1215 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1216 | { |
2ced46c2 | 1217 | struct nfs4_state *newstate; |
864472e9 TM |
1218 | int ret; |
1219 | ||
dc0b027d TM |
1220 | opendata->o_arg.open_flags = 0; |
1221 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1222 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1223 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1224 | nfs4_init_opendata_res(opendata); | |
b257957e | 1225 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1226 | if (ret != 0) |
1227 | return ret; | |
2ced46c2 | 1228 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1229 | if (IS_ERR(newstate)) |
1230 | return PTR_ERR(newstate); | |
643168c2 | 1231 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1232 | *res = newstate; |
864472e9 TM |
1233 | return 0; |
1234 | } | |
1235 | ||
1236 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1237 | { | |
864472e9 | 1238 | struct nfs4_state *newstate; |
864472e9 TM |
1239 | int ret; |
1240 | ||
1241 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1242 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
1243 | smp_rmb(); |
1244 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1245 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1246 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1247 | if (ret != 0) |
1248 | return ret; | |
2ced46c2 TM |
1249 | if (newstate != state) |
1250 | return -ESTALE; | |
864472e9 TM |
1251 | } |
1252 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1253 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1254 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1255 | if (ret != 0) |
1256 | return ret; | |
2ced46c2 TM |
1257 | if (newstate != state) |
1258 | return -ESTALE; | |
864472e9 TM |
1259 | } |
1260 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1261 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1262 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1263 | if (ret != 0) |
1264 | return ret; | |
2ced46c2 TM |
1265 | if (newstate != state) |
1266 | return -ESTALE; | |
864472e9 | 1267 | } |
1ac7e2fd TM |
1268 | /* |
1269 | * We may have performed cached opens for all three recoveries. | |
1270 | * Check if we need to update the current stateid. | |
1271 | */ | |
1272 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 1273 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 1274 | write_seqlock(&state->seqlock); |
1ac7e2fd | 1275 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 1276 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 1277 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1278 | } |
864472e9 TM |
1279 | return 0; |
1280 | } | |
1281 | ||
1da177e4 LT |
1282 | /* |
1283 | * OPEN_RECLAIM: | |
1284 | * reclaim state on the server after a reboot. | |
1da177e4 | 1285 | */ |
539cd03a | 1286 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1287 | { |
1ac7e2fd | 1288 | struct nfs_delegation *delegation; |
864472e9 | 1289 | struct nfs4_opendata *opendata; |
dc0b027d | 1290 | fmode_t delegation_type = 0; |
1da177e4 LT |
1291 | int status; |
1292 | ||
6f220ed5 TM |
1293 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1294 | if (IS_ERR(opendata)) | |
1295 | return PTR_ERR(opendata); | |
864472e9 TM |
1296 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
1297 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
1298 | rcu_read_lock(); |
1299 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1300 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1301 | delegation_type = delegation->type; |
1ac7e2fd | 1302 | rcu_read_unlock(); |
864472e9 TM |
1303 | opendata->o_arg.u.delegation_type = delegation_type; |
1304 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1305 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1306 | return status; |
1307 | } | |
1308 | ||
539cd03a | 1309 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1310 | { |
1311 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1312 | struct nfs4_exception exception = { }; | |
1313 | int err; | |
1314 | do { | |
539cd03a | 1315 | err = _nfs4_do_open_reclaim(ctx, state); |
168667c4 | 1316 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1317 | break; |
1318 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1319 | } while (exception.retry); |
1320 | return err; | |
1321 | } | |
1322 | ||
864472e9 TM |
1323 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1324 | { | |
1325 | struct nfs_open_context *ctx; | |
1326 | int ret; | |
1327 | ||
1328 | ctx = nfs4_state_find_open_context(state); | |
1329 | if (IS_ERR(ctx)) | |
1330 | return PTR_ERR(ctx); | |
539cd03a | 1331 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1332 | put_nfs_open_context(ctx); |
1333 | return ret; | |
1334 | } | |
1335 | ||
13437e12 | 1336 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 1337 | { |
e56e0b78 | 1338 | struct nfs4_opendata *opendata; |
864472e9 | 1339 | int ret; |
1da177e4 | 1340 | |
6f220ed5 TM |
1341 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1342 | if (IS_ERR(opendata)) | |
1343 | return PTR_ERR(opendata); | |
e56e0b78 | 1344 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
f597c537 | 1345 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); |
864472e9 | 1346 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 1347 | nfs4_opendata_put(opendata); |
864472e9 | 1348 | return ret; |
1da177e4 LT |
1349 | } |
1350 | ||
13437e12 | 1351 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
1352 | { |
1353 | struct nfs4_exception exception = { }; | |
539cd03a | 1354 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
1355 | int err; |
1356 | do { | |
13437e12 | 1357 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
1358 | switch (err) { |
1359 | case 0: | |
965b5d67 TM |
1360 | case -ENOENT: |
1361 | case -ESTALE: | |
1362 | goto out; | |
bcfa49f6 RL |
1363 | case -NFS4ERR_BADSESSION: |
1364 | case -NFS4ERR_BADSLOT: | |
1365 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1366 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1367 | case -NFS4ERR_DEADSESSION: | |
37380e42 | 1368 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
9f594791 | 1369 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); |
37380e42 | 1370 | err = -EAGAIN; |
bcfa49f6 | 1371 | goto out; |
1da177e4 LT |
1372 | case -NFS4ERR_STALE_CLIENTID: |
1373 | case -NFS4ERR_STALE_STATEID: | |
37380e42 | 1374 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
1da177e4 LT |
1375 | case -NFS4ERR_EXPIRED: |
1376 | /* Don't recall a delegation if it was lost */ | |
0400a6b0 | 1377 | nfs4_schedule_lease_recovery(server->nfs_client); |
37380e42 | 1378 | err = -EAGAIN; |
965b5d67 | 1379 | goto out; |
a1d0b5ee | 1380 | case -NFS4ERR_DELEG_REVOKED: |
965b5d67 TM |
1381 | case -NFS4ERR_ADMIN_REVOKED: |
1382 | case -NFS4ERR_BAD_STATEID: | |
a1d0b5ee TM |
1383 | nfs_inode_find_state_and_recover(state->inode, |
1384 | stateid); | |
0400a6b0 | 1385 | nfs4_schedule_stateid_recovery(server, state); |
965b5d67 TM |
1386 | case -ENOMEM: |
1387 | err = 0; | |
1388 | goto out; | |
1da177e4 | 1389 | } |
37380e42 | 1390 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
1da177e4 LT |
1391 | err = nfs4_handle_exception(server, err, &exception); |
1392 | } while (exception.retry); | |
965b5d67 | 1393 | out: |
1da177e4 LT |
1394 | return err; |
1395 | } | |
1396 | ||
cdd4e68b TM |
1397 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1398 | { | |
1399 | struct nfs4_opendata *data = calldata; | |
1400 | ||
1401 | data->rpc_status = task->tk_status; | |
26e976a8 | 1402 | if (data->rpc_status == 0) { |
f597c537 | 1403 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 1404 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1405 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1406 | data->rpc_done = 1; |
26e976a8 | 1407 | } |
cdd4e68b TM |
1408 | } |
1409 | ||
1410 | static void nfs4_open_confirm_release(void *calldata) | |
1411 | { | |
1412 | struct nfs4_opendata *data = calldata; | |
1413 | struct nfs4_state *state = NULL; | |
1414 | ||
1415 | /* If this request hasn't been cancelled, do nothing */ | |
1416 | if (data->cancelled == 0) | |
1417 | goto out_free; | |
1418 | /* In case of error, no cleanup! */ | |
3e309914 | 1419 | if (!data->rpc_done) |
cdd4e68b | 1420 | goto out_free; |
cdd4e68b | 1421 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1422 | if (!IS_ERR(state)) |
643168c2 | 1423 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1424 | out_free: |
c6d00e63 | 1425 | nfs4_opendata_put(data); |
cdd4e68b TM |
1426 | } |
1427 | ||
1428 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1429 | .rpc_call_done = nfs4_open_confirm_done, |
1430 | .rpc_release = nfs4_open_confirm_release, | |
1431 | }; | |
1432 | ||
1433 | /* | |
1434 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1435 | */ | |
1436 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1437 | { | |
1438 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1439 | struct rpc_task *task; | |
5138fde0 TM |
1440 | struct rpc_message msg = { |
1441 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1442 | .rpc_argp = &data->c_arg, | |
1443 | .rpc_resp = &data->c_res, | |
1444 | .rpc_cred = data->owner->so_cred, | |
1445 | }; | |
c970aa85 TM |
1446 | struct rpc_task_setup task_setup_data = { |
1447 | .rpc_client = server->client, | |
5138fde0 | 1448 | .rpc_message = &msg, |
c970aa85 TM |
1449 | .callback_ops = &nfs4_open_confirm_ops, |
1450 | .callback_data = data, | |
101070ca | 1451 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1452 | .flags = RPC_TASK_ASYNC, |
1453 | }; | |
1da177e4 LT |
1454 | int status; |
1455 | ||
c6d00e63 | 1456 | kref_get(&data->kref); |
3e309914 TM |
1457 | data->rpc_done = 0; |
1458 | data->rpc_status = 0; | |
5138fde0 | 1459 | data->timestamp = jiffies; |
c970aa85 | 1460 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1461 | if (IS_ERR(task)) |
cdd4e68b | 1462 | return PTR_ERR(task); |
cdd4e68b TM |
1463 | status = nfs4_wait_for_completion_rpc_task(task); |
1464 | if (status != 0) { | |
1465 | data->cancelled = 1; | |
1466 | smp_wmb(); | |
1467 | } else | |
1468 | status = data->rpc_status; | |
e6b3c4db | 1469 | rpc_put_task(task); |
1da177e4 LT |
1470 | return status; |
1471 | } | |
1472 | ||
24ac23ab | 1473 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1474 | { |
24ac23ab TM |
1475 | struct nfs4_opendata *data = calldata; |
1476 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 1477 | |
24ac23ab | 1478 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
c8da19b9 | 1479 | goto out_wait; |
aac00a8d TM |
1480 | /* |
1481 | * Check if we still need to send an OPEN call, or if we can use | |
1482 | * a delegation instead. | |
1483 | */ | |
1484 | if (data->state != NULL) { | |
1485 | struct nfs_delegation *delegation; | |
1486 | ||
dc0b027d | 1487 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1488 | goto out_no_action; |
aac00a8d TM |
1489 | rcu_read_lock(); |
1490 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
652f89f6 TM |
1491 | if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR && |
1492 | can_open_delegated(delegation, data->o_arg.fmode)) | |
1493 | goto unlock_no_action; | |
aac00a8d TM |
1494 | rcu_read_unlock(); |
1495 | } | |
95b72eb0 | 1496 | /* Update client id. */ |
1f0e890d | 1497 | data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; |
6f220ed5 | 1498 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 1499 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
e23008ec | 1500 | data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0]; |
6f220ed5 TM |
1501 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1502 | } | |
26e976a8 | 1503 | data->timestamp = jiffies; |
035168ab | 1504 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 1505 | &data->o_arg.seq_args, |
2240a9e2 TM |
1506 | &data->o_res.seq_res, |
1507 | task) != 0) | |
1508 | nfs_release_seqid(data->o_arg.seqid); | |
6ee41268 | 1509 | return; |
652f89f6 TM |
1510 | unlock_no_action: |
1511 | rcu_read_unlock(); | |
6ee41268 TM |
1512 | out_no_action: |
1513 | task->tk_action = NULL; | |
c8da19b9 | 1514 | out_wait: |
b75ad4cd | 1515 | nfs4_sequence_done(task, &data->o_res.seq_res); |
b257957e AB |
1516 | } |
1517 | ||
24ac23ab TM |
1518 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1519 | { | |
1520 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1521 | |
24ac23ab | 1522 | data->rpc_status = task->tk_status; |
d898528c | 1523 | |
14516c3a TM |
1524 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1525 | return; | |
d898528c | 1526 | |
24ac23ab | 1527 | if (task->tk_status == 0) { |
807d66d8 TM |
1528 | if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) { |
1529 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1530 | case S_IFREG: |
1531 | break; | |
1532 | case S_IFLNK: | |
24ac23ab | 1533 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1534 | break; |
1535 | case S_IFDIR: | |
24ac23ab | 1536 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1537 | break; |
1538 | default: | |
24ac23ab | 1539 | data->rpc_status = -ENOTDIR; |
807d66d8 | 1540 | } |
6f926b5b | 1541 | } |
26e976a8 | 1542 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1543 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1544 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1545 | } |
3e309914 | 1546 | data->rpc_done = 1; |
24ac23ab | 1547 | } |
6f926b5b | 1548 | |
24ac23ab TM |
1549 | static void nfs4_open_release(void *calldata) |
1550 | { | |
1551 | struct nfs4_opendata *data = calldata; | |
1552 | struct nfs4_state *state = NULL; | |
1553 | ||
1554 | /* If this request hasn't been cancelled, do nothing */ | |
1555 | if (data->cancelled == 0) | |
1556 | goto out_free; | |
1557 | /* In case of error, no cleanup! */ | |
3e309914 | 1558 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1559 | goto out_free; |
1560 | /* In case we need an open_confirm, no cleanup! */ | |
1561 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1562 | goto out_free; | |
24ac23ab | 1563 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1564 | if (!IS_ERR(state)) |
643168c2 | 1565 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1566 | out_free: |
c6d00e63 | 1567 | nfs4_opendata_put(data); |
24ac23ab TM |
1568 | } |
1569 | ||
1570 | static const struct rpc_call_ops nfs4_open_ops = { | |
1571 | .rpc_call_prepare = nfs4_open_prepare, | |
1572 | .rpc_call_done = nfs4_open_done, | |
1573 | .rpc_release = nfs4_open_release, | |
1574 | }; | |
1575 | ||
b257957e | 1576 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) |
24ac23ab TM |
1577 | { |
1578 | struct inode *dir = data->dir->d_inode; | |
1579 | struct nfs_server *server = NFS_SERVER(dir); | |
1580 | struct nfs_openargs *o_arg = &data->o_arg; | |
1581 | struct nfs_openres *o_res = &data->o_res; | |
1582 | struct rpc_task *task; | |
5138fde0 TM |
1583 | struct rpc_message msg = { |
1584 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1585 | .rpc_argp = o_arg, | |
1586 | .rpc_resp = o_res, | |
1587 | .rpc_cred = data->owner->so_cred, | |
1588 | }; | |
c970aa85 TM |
1589 | struct rpc_task_setup task_setup_data = { |
1590 | .rpc_client = server->client, | |
5138fde0 | 1591 | .rpc_message = &msg, |
c970aa85 TM |
1592 | .callback_ops = &nfs4_open_ops, |
1593 | .callback_data = data, | |
101070ca | 1594 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1595 | .flags = RPC_TASK_ASYNC, |
1596 | }; | |
24ac23ab TM |
1597 | int status; |
1598 | ||
9d12b216 | 1599 | nfs41_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 1600 | kref_get(&data->kref); |
3e309914 TM |
1601 | data->rpc_done = 0; |
1602 | data->rpc_status = 0; | |
2ced46c2 | 1603 | data->cancelled = 0; |
b257957e | 1604 | if (isrecover) |
8fe72bac | 1605 | nfs4_set_sequence_privileged(&o_arg->seq_args); |
c970aa85 | 1606 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1607 | if (IS_ERR(task)) |
1608 | return PTR_ERR(task); | |
1609 | status = nfs4_wait_for_completion_rpc_task(task); | |
1610 | if (status != 0) { | |
1611 | data->cancelled = 1; | |
1612 | smp_wmb(); | |
1613 | } else | |
1614 | status = data->rpc_status; | |
1615 | rpc_put_task(task); | |
1616 | ||
1617 | return status; | |
1618 | } | |
1619 | ||
1620 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1621 | { | |
1622 | struct inode *dir = data->dir->d_inode; | |
1623 | struct nfs_openres *o_res = &data->o_res; | |
1624 | int status; | |
1625 | ||
1626 | status = nfs4_run_open_task(data, 1); | |
1627 | if (status != 0 || !data->rpc_done) | |
1628 | return status; | |
1629 | ||
6926afd1 TM |
1630 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
1631 | ||
b257957e AB |
1632 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
1633 | status = _nfs4_proc_open_confirm(data); | |
1634 | if (status != 0) | |
1635 | return status; | |
1636 | } | |
1637 | ||
1638 | return status; | |
1639 | } | |
1640 | ||
6168f62c WAA |
1641 | static int nfs4_opendata_access(struct rpc_cred *cred, |
1642 | struct nfs4_opendata *opendata, | |
f8d9a897 WAA |
1643 | struct nfs4_state *state, fmode_t fmode, |
1644 | int openflags) | |
6168f62c WAA |
1645 | { |
1646 | struct nfs_access_entry cache; | |
1647 | u32 mask; | |
1648 | ||
1649 | /* access call failed or for some reason the server doesn't | |
1650 | * support any access modes -- defer access call until later */ | |
1651 | if (opendata->o_res.access_supported == 0) | |
1652 | return 0; | |
1653 | ||
1654 | mask = 0; | |
bbd3a8ee | 1655 | /* don't check MAY_WRITE - a newly created file may not have |
f8d9a897 WAA |
1656 | * write mode bits, but POSIX allows the creating process to write. |
1657 | * use openflags to check for exec, because fmode won't | |
1658 | * always have FMODE_EXEC set when file open for exec. */ | |
1659 | if (openflags & __FMODE_EXEC) { | |
1660 | /* ONLY check for exec rights */ | |
1661 | mask = MAY_EXEC; | |
1662 | } else if (fmode & FMODE_READ) | |
1663 | mask = MAY_READ; | |
6168f62c WAA |
1664 | |
1665 | cache.cred = cred; | |
1666 | cache.jiffies = jiffies; | |
1667 | nfs_access_set_mask(&cache, opendata->o_res.access_result); | |
1668 | nfs_access_add_cache(state->inode, &cache); | |
1669 | ||
bbd3a8ee | 1670 | if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0) |
6168f62c WAA |
1671 | return 0; |
1672 | ||
1673 | /* even though OPEN succeeded, access is denied. Close the file */ | |
1674 | nfs4_close_state(state, fmode); | |
998f40b5 | 1675 | return -EACCES; |
6168f62c WAA |
1676 | } |
1677 | ||
b257957e AB |
1678 | /* |
1679 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1680 | */ | |
1681 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1682 | { | |
1683 | struct inode *dir = data->dir->d_inode; | |
1684 | struct nfs_server *server = NFS_SERVER(dir); | |
1685 | struct nfs_openargs *o_arg = &data->o_arg; | |
1686 | struct nfs_openres *o_res = &data->o_res; | |
1687 | int status; | |
1688 | ||
1689 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
1690 | if (!data->rpc_done) |
1691 | return status; | |
1692 | if (status != 0) { | |
1693 | if (status == -NFS4ERR_BADNAME && | |
1694 | !(o_arg->open_flags & O_CREAT)) | |
1695 | return -ENOENT; | |
24ac23ab | 1696 | return status; |
08ef7bd3 | 1697 | } |
24ac23ab | 1698 | |
6926afd1 TM |
1699 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
1700 | ||
90ff0c54 | 1701 | if (o_arg->open_flags & O_CREAT) |
56ae19f3 | 1702 | update_changeattr(dir, &o_res->cinfo); |
0df5dd4a TM |
1703 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1704 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1705 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1706 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1707 | if (status != 0) |
24ac23ab | 1708 | return status; |
1da177e4 LT |
1709 | } |
1710 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1711 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1712 | return 0; |
1da177e4 LT |
1713 | } |
1714 | ||
d83217c1 AA |
1715 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1716 | { | |
1717 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1718 | } | |
1719 | ||
1da177e4 LT |
1720 | /* |
1721 | * OPEN_EXPIRED: | |
1722 | * reclaim state on the server after a network partition. | |
1723 | * Assumes caller holds the appropriate lock | |
1724 | */ | |
539cd03a | 1725 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1726 | { |
e56e0b78 | 1727 | struct nfs4_opendata *opendata; |
864472e9 | 1728 | int ret; |
1da177e4 | 1729 | |
6f220ed5 TM |
1730 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1731 | if (IS_ERR(opendata)) | |
1732 | return PTR_ERR(opendata); | |
864472e9 | 1733 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1734 | if (ret == -ESTALE) |
3d4ff43d | 1735 | d_drop(ctx->dentry); |
c6d00e63 | 1736 | nfs4_opendata_put(opendata); |
864472e9 | 1737 | return ret; |
1da177e4 LT |
1738 | } |
1739 | ||
a9ed2e25 | 1740 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1741 | { |
539cd03a | 1742 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1743 | struct nfs4_exception exception = { }; |
1744 | int err; | |
1745 | ||
1746 | do { | |
539cd03a | 1747 | err = _nfs4_open_expired(ctx, state); |
a9ed2e25 TM |
1748 | switch (err) { |
1749 | default: | |
1750 | goto out; | |
1751 | case -NFS4ERR_GRACE: | |
1752 | case -NFS4ERR_DELAY: | |
1753 | nfs4_handle_exception(server, err, &exception); | |
1754 | err = 0; | |
1755 | } | |
202b50dc | 1756 | } while (exception.retry); |
a9ed2e25 | 1757 | out: |
202b50dc TM |
1758 | return err; |
1759 | } | |
1760 | ||
1da177e4 LT |
1761 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1762 | { | |
1da177e4 | 1763 | struct nfs_open_context *ctx; |
864472e9 | 1764 | int ret; |
1da177e4 | 1765 | |
864472e9 TM |
1766 | ctx = nfs4_state_find_open_context(state); |
1767 | if (IS_ERR(ctx)) | |
1768 | return PTR_ERR(ctx); | |
539cd03a | 1769 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1770 | put_nfs_open_context(ctx); |
1771 | return ret; | |
1da177e4 LT |
1772 | } |
1773 | ||
f062eb6c | 1774 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd | 1775 | static void nfs41_clear_delegation_stateid(struct nfs4_state *state) |
f062eb6c | 1776 | { |
f062eb6c | 1777 | struct nfs_server *server = NFS_SERVER(state->inode); |
3e60ffdd CL |
1778 | nfs4_stateid *stateid = &state->stateid; |
1779 | int status; | |
1780 | ||
1781 | /* If a state reset has been done, test_stateid is unneeded */ | |
1782 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
1783 | return; | |
1784 | ||
1785 | status = nfs41_test_stateid(server, stateid); | |
1786 | if (status != NFS_OK) { | |
1787 | /* Free the stateid unless the server explicitly | |
1788 | * informs us the stateid is unrecognized. */ | |
1789 | if (status != -NFS4ERR_BAD_STATEID) | |
1790 | nfs41_free_stateid(server, stateid); | |
6938867e | 1791 | nfs_remove_bad_delegation(state->inode); |
3e60ffdd | 1792 | |
6938867e BS |
1793 | write_seqlock(&state->seqlock); |
1794 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
1795 | write_sequnlock(&state->seqlock); | |
3e60ffdd CL |
1796 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
1797 | } | |
1798 | } | |
1799 | ||
1800 | /** | |
1801 | * nfs41_check_open_stateid - possibly free an open stateid | |
1802 | * | |
1803 | * @state: NFSv4 state for an inode | |
1804 | * | |
1805 | * Returns NFS_OK if recovery for this stateid is now finished. | |
1806 | * Otherwise a negative NFS4ERR value is returned. | |
1807 | */ | |
1808 | static int nfs41_check_open_stateid(struct nfs4_state *state) | |
1809 | { | |
1810 | struct nfs_server *server = NFS_SERVER(state->inode); | |
fcb6d9c6 | 1811 | nfs4_stateid *stateid = &state->open_stateid; |
3e60ffdd CL |
1812 | int status; |
1813 | ||
1814 | /* If a state reset has been done, test_stateid is unneeded */ | |
1815 | if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) && | |
1816 | (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) && | |
1817 | (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0)) | |
1818 | return -NFS4ERR_BAD_STATEID; | |
1819 | ||
1820 | status = nfs41_test_stateid(server, stateid); | |
1821 | if (status != NFS_OK) { | |
1822 | /* Free the stateid unless the server explicitly | |
1823 | * informs us the stateid is unrecognized. */ | |
1824 | if (status != -NFS4ERR_BAD_STATEID) | |
1825 | nfs41_free_stateid(server, stateid); | |
1826 | ||
1827 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1828 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1829 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
b01dd1d8 BS |
1830 | } |
1831 | return status; | |
1832 | } | |
1833 | ||
1834 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
1835 | { | |
eb64cf96 | 1836 | int status; |
b01dd1d8 | 1837 | |
3e60ffdd CL |
1838 | nfs41_clear_delegation_stateid(state); |
1839 | status = nfs41_check_open_stateid(state); | |
eb64cf96 CL |
1840 | if (status != NFS_OK) |
1841 | status = nfs4_open_expired(sp, state); | |
1842 | return status; | |
f062eb6c BS |
1843 | } |
1844 | #endif | |
1845 | ||
aa53ed54 JL |
1846 | /* |
1847 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1848 | * fields corresponding to attributes that were used to store the verifier. | |
1849 | * Make sure we clobber those fields in the later setattr call | |
1850 | */ | |
1851 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1852 | { | |
1853 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1854 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1855 | sattr->ia_valid |= ATTR_ATIME; | |
1856 | ||
1857 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1858 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1859 | sattr->ia_valid |= ATTR_MTIME; | |
1860 | } | |
1861 | ||
c21443c2 TM |
1862 | static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, |
1863 | fmode_t fmode, | |
1864 | int flags, | |
1865 | struct nfs4_state **res) | |
1866 | { | |
1867 | struct nfs4_state_owner *sp = opendata->owner; | |
1868 | struct nfs_server *server = sp->so_server; | |
1869 | struct nfs4_state *state; | |
1870 | unsigned int seq; | |
1871 | int ret; | |
1872 | ||
1873 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); | |
1874 | ||
1875 | ret = _nfs4_proc_open(opendata); | |
1876 | if (ret != 0) | |
1877 | goto out; | |
1878 | ||
1879 | state = nfs4_opendata_to_nfs4_state(opendata); | |
1880 | ret = PTR_ERR(state); | |
1881 | if (IS_ERR(state)) | |
1882 | goto out; | |
1883 | if (server->caps & NFS_CAP_POSIX_LOCK) | |
1884 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); | |
1885 | ||
1886 | ret = nfs4_opendata_access(sp->so_cred, opendata, state, fmode, flags); | |
1887 | if (ret != 0) | |
1888 | goto out; | |
1889 | ||
1890 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) { | |
1891 | nfs4_schedule_stateid_recovery(server, state); | |
1892 | nfs4_wait_clnt_recover(server->nfs_client); | |
1893 | } | |
1894 | *res = state; | |
1895 | out: | |
1896 | return ret; | |
1897 | } | |
1898 | ||
1da177e4 | 1899 | /* |
24ac23ab | 1900 | * Returns a referenced nfs4_state |
1da177e4 | 1901 | */ |
82be417a AA |
1902 | static int _nfs4_do_open(struct inode *dir, |
1903 | struct dentry *dentry, | |
1904 | fmode_t fmode, | |
1905 | int flags, | |
1906 | struct iattr *sattr, | |
1907 | struct rpc_cred *cred, | |
1908 | struct nfs4_state **res, | |
1909 | struct nfs4_threshold **ctx_th) | |
1da177e4 LT |
1910 | { |
1911 | struct nfs4_state_owner *sp; | |
1912 | struct nfs4_state *state = NULL; | |
1913 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1914 | struct nfs4_opendata *opendata; |
aac00a8d | 1915 | int status; |
1da177e4 LT |
1916 | |
1917 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 1918 | status = -ENOMEM; |
d1e284d5 TM |
1919 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
1920 | if (sp == NULL) { | |
1da177e4 LT |
1921 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
1922 | goto out_err; | |
1923 | } | |
58d9714a TM |
1924 | status = nfs4_recover_expired_lease(server); |
1925 | if (status != 0) | |
b4454fe1 | 1926 | goto err_put_state_owner; |
82a2c1b7 AV |
1927 | if (dentry->d_inode != NULL) |
1928 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 1929 | status = -ENOMEM; |
82a2c1b7 | 1930 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, GFP_KERNEL); |
e56e0b78 | 1931 | if (opendata == NULL) |
95d35cb4 | 1932 | goto err_put_state_owner; |
1da177e4 | 1933 | |
82be417a AA |
1934 | if (ctx_th && server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
1935 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
1936 | if (!opendata->f_attr.mdsthreshold) | |
1937 | goto err_opendata_put; | |
1549210f | 1938 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 1939 | } |
82a2c1b7 AV |
1940 | if (dentry->d_inode != NULL) |
1941 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 1942 | |
c21443c2 | 1943 | status = _nfs4_open_and_get_state(opendata, fmode, flags, &state); |
6168f62c WAA |
1944 | if (status != 0) |
1945 | goto err_opendata_put; | |
1946 | ||
0ab64e0e TM |
1947 | if (opendata->o_arg.open_flags & O_EXCL) { |
1948 | nfs4_exclusive_attrset(opendata, sattr); | |
1949 | ||
1950 | nfs_fattr_init(opendata->o_res.f_attr); | |
1951 | status = nfs4_do_setattr(state->inode, cred, | |
1952 | opendata->o_res.f_attr, sattr, | |
1953 | state); | |
1954 | if (status == 0) | |
1955 | nfs_setattr_update_inode(state->inode, sattr); | |
1956 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
1957 | } | |
82be417a AA |
1958 | |
1959 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) | |
1960 | *ctx_th = opendata->f_attr.mdsthreshold; | |
1961 | else | |
1962 | kfree(opendata->f_attr.mdsthreshold); | |
1963 | opendata->f_attr.mdsthreshold = NULL; | |
1964 | ||
c6d00e63 | 1965 | nfs4_opendata_put(opendata); |
1da177e4 | 1966 | nfs4_put_state_owner(sp); |
1da177e4 LT |
1967 | *res = state; |
1968 | return 0; | |
c6d00e63 | 1969 | err_opendata_put: |
82be417a | 1970 | kfree(opendata->f_attr.mdsthreshold); |
c6d00e63 | 1971 | nfs4_opendata_put(opendata); |
e56e0b78 TM |
1972 | err_put_state_owner: |
1973 | nfs4_put_state_owner(sp); | |
1da177e4 | 1974 | out_err: |
1da177e4 LT |
1975 | *res = NULL; |
1976 | return status; | |
1977 | } | |
1978 | ||
1979 | ||
82be417a AA |
1980 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
1981 | struct dentry *dentry, | |
1982 | fmode_t fmode, | |
1983 | int flags, | |
1984 | struct iattr *sattr, | |
1985 | struct rpc_cred *cred, | |
1986 | struct nfs4_threshold **ctx_th) | |
1da177e4 LT |
1987 | { |
1988 | struct nfs4_exception exception = { }; | |
1989 | struct nfs4_state *res; | |
1990 | int status; | |
1991 | ||
6168f62c | 1992 | fmode &= FMODE_READ|FMODE_WRITE|FMODE_EXEC; |
1da177e4 | 1993 | do { |
82be417a AA |
1994 | status = _nfs4_do_open(dir, dentry, fmode, flags, sattr, cred, |
1995 | &res, ctx_th); | |
1da177e4 LT |
1996 | if (status == 0) |
1997 | break; | |
1998 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1999 | * book-keeping w.r.t. state-changing operations | |
2000 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
2001 | * It is actually a sign of a bug on the client or on the server. | |
2002 | * | |
2003 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 2004 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
2005 | * have unhashed the old state_owner for us, and that we can |
2006 | * therefore safely retry using a new one. We should still warn | |
2007 | * the user though... | |
2008 | */ | |
2009 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 2010 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
2011 | " returned a bad sequence-id error!\n", |
2012 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
2013 | exception.retry = 1; |
2014 | continue; | |
2015 | } | |
550f5747 TM |
2016 | /* |
2017 | * BAD_STATEID on OPEN means that the server cancelled our | |
2018 | * state before it received the OPEN_CONFIRM. | |
2019 | * Recover by retrying the request as per the discussion | |
2020 | * on Page 181 of RFC3530. | |
2021 | */ | |
2022 | if (status == -NFS4ERR_BAD_STATEID) { | |
2023 | exception.retry = 1; | |
2024 | continue; | |
2025 | } | |
aac00a8d TM |
2026 | if (status == -EAGAIN) { |
2027 | /* We must have found a delegation */ | |
2028 | exception.retry = 1; | |
2029 | continue; | |
2030 | } | |
1da177e4 LT |
2031 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
2032 | status, &exception)); | |
2033 | } while (exception.retry); | |
2034 | return res; | |
2035 | } | |
2036 | ||
659bfcd6 TM |
2037 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2038 | struct nfs_fattr *fattr, struct iattr *sattr, | |
2039 | struct nfs4_state *state) | |
1da177e4 | 2040 | { |
3e4f6290 | 2041 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 2042 | struct nfs_setattrargs arg = { |
3e4f6290 | 2043 | .fh = NFS_FH(inode), |
1da177e4 LT |
2044 | .iap = sattr, |
2045 | .server = server, | |
2046 | .bitmask = server->attr_bitmask, | |
2047 | }; | |
2048 | struct nfs_setattrres res = { | |
2049 | .fattr = fattr, | |
2050 | .server = server, | |
2051 | }; | |
2052 | struct rpc_message msg = { | |
659bfcd6 TM |
2053 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
2054 | .rpc_argp = &arg, | |
2055 | .rpc_resp = &res, | |
2056 | .rpc_cred = cred, | |
1da177e4 | 2057 | }; |
26e976a8 | 2058 | unsigned long timestamp = jiffies; |
65e4308d | 2059 | int status; |
1da177e4 | 2060 | |
0e574af1 | 2061 | nfs_fattr_init(fattr); |
1da177e4 | 2062 | |
5d422301 | 2063 | if (state != NULL && nfs4_valid_open_stateid(state)) { |
2a369153 TM |
2064 | struct nfs_lockowner lockowner = { |
2065 | .l_owner = current->files, | |
2066 | .l_pid = current->tgid, | |
2067 | }; | |
4fc8796d | 2068 | nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, |
2a369153 | 2069 | &lockowner); |
4fc8796d TM |
2070 | } else if (nfs4_copy_delegation_stateid(&arg.stateid, inode, |
2071 | FMODE_WRITE)) { | |
3e4f6290 | 2072 | /* Use that stateid */ |
08e9eac4 | 2073 | } else |
f597c537 | 2074 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 2075 | |
7c513058 | 2076 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
2077 | if (status == 0 && state != NULL) |
2078 | renew_lease(server, timestamp); | |
65e4308d | 2079 | return status; |
1da177e4 LT |
2080 | } |
2081 | ||
659bfcd6 TM |
2082 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2083 | struct nfs_fattr *fattr, struct iattr *sattr, | |
2084 | struct nfs4_state *state) | |
1da177e4 | 2085 | { |
3e4f6290 | 2086 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
2087 | struct nfs4_exception exception = { |
2088 | .state = state, | |
3114ea7a | 2089 | .inode = inode, |
a1d0b5ee | 2090 | }; |
1da177e4 LT |
2091 | int err; |
2092 | do { | |
451146be TM |
2093 | err = _nfs4_do_setattr(inode, cred, fattr, sattr, state); |
2094 | switch (err) { | |
2095 | case -NFS4ERR_OPENMODE: | |
2096 | if (state && !(state->state & FMODE_WRITE)) { | |
2097 | err = -EBADF; | |
2098 | if (sattr->ia_valid & ATTR_OPEN) | |
2099 | err = -EACCES; | |
2100 | goto out; | |
2101 | } | |
2102 | } | |
2103 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 2104 | } while (exception.retry); |
451146be | 2105 | out: |
1da177e4 LT |
2106 | return err; |
2107 | } | |
2108 | ||
2109 | struct nfs4_closedata { | |
2110 | struct inode *inode; | |
2111 | struct nfs4_state *state; | |
2112 | struct nfs_closeargs arg; | |
2113 | struct nfs_closeres res; | |
516a6af6 | 2114 | struct nfs_fattr fattr; |
26e976a8 | 2115 | unsigned long timestamp; |
f7e8917a FI |
2116 | bool roc; |
2117 | u32 roc_barrier; | |
1da177e4 LT |
2118 | }; |
2119 | ||
963d8fe5 | 2120 | static void nfs4_free_closedata(void *data) |
9512135d | 2121 | { |
963d8fe5 TM |
2122 | struct nfs4_closedata *calldata = data; |
2123 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 2124 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 2125 | |
f7e8917a FI |
2126 | if (calldata->roc) |
2127 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
2128 | nfs4_put_open_state(calldata->state); |
2129 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 2130 | nfs4_put_state_owner(sp); |
322b2b90 | 2131 | nfs_sb_deactive(sb); |
9512135d TM |
2132 | kfree(calldata); |
2133 | } | |
2134 | ||
88069f77 TM |
2135 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
2136 | fmode_t fmode) | |
2137 | { | |
2138 | spin_lock(&state->owner->so_lock); | |
2139 | if (!(fmode & FMODE_READ)) | |
2140 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2141 | if (!(fmode & FMODE_WRITE)) | |
2142 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2143 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
2144 | spin_unlock(&state->owner->so_lock); | |
2145 | } | |
2146 | ||
963d8fe5 | 2147 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2148 | { |
963d8fe5 | 2149 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2150 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
2151 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
2152 | ||
a3ca5651 | 2153 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2154 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2155 | return; | |
1da177e4 LT |
2156 | /* hmm. we are done with the inode, and in the process of freeing |
2157 | * the state_owner. we keep this around to process errors | |
2158 | */ | |
1da177e4 LT |
2159 | switch (task->tk_status) { |
2160 | case 0: | |
f7e8917a FI |
2161 | if (calldata->roc) |
2162 | pnfs_roc_set_barrier(state->inode, | |
2163 | calldata->roc_barrier); | |
45328c35 | 2164 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 2165 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
2166 | nfs4_close_clear_stateid_flags(state, |
2167 | calldata->arg.fmode); | |
1da177e4 LT |
2168 | break; |
2169 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
2170 | case -NFS4ERR_OLD_STATEID: |
2171 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2172 | case -NFS4ERR_EXPIRED: |
dc0b027d | 2173 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2174 | break; |
1da177e4 | 2175 | default: |
72211dbe TM |
2176 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
2177 | rpc_restart_call_prepare(task); | |
1da177e4 | 2178 | } |
72211dbe | 2179 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2180 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2181 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2182 | } |
2183 | ||
4ce70ada | 2184 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2185 | { |
4ce70ada | 2186 | struct nfs4_closedata *calldata = data; |
9512135d | 2187 | struct nfs4_state *state = calldata->state; |
7fdab069 | 2188 | struct inode *inode = calldata->inode; |
88069f77 | 2189 | int call_close = 0; |
9512135d | 2190 | |
a3ca5651 | 2191 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2192 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 2193 | goto out_wait; |
003707c7 | 2194 | |
88069f77 TM |
2195 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
2196 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 2197 | spin_lock(&state->owner->so_lock); |
003707c7 | 2198 | /* Calculate the change in open mode */ |
e7616923 | 2199 | if (state->n_rdwr == 0) { |
003707c7 | 2200 | if (state->n_rdonly == 0) { |
88069f77 TM |
2201 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
2202 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2203 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
2204 | } |
2205 | if (state->n_wronly == 0) { | |
88069f77 TM |
2206 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
2207 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2208 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 2209 | } |
e7616923 | 2210 | } |
5d422301 TM |
2211 | if (!nfs4_valid_open_stateid(state)) |
2212 | call_close = 0; | |
4cecb76f | 2213 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2214 | |
2215 | if (!call_close) { | |
963d8fe5 | 2216 | /* Note: exit _without_ calling nfs4_close_done */ |
c8da19b9 | 2217 | goto out_no_action; |
9512135d | 2218 | } |
88069f77 | 2219 | |
f7e8917a | 2220 | if (calldata->arg.fmode == 0) { |
88069f77 | 2221 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a | 2222 | if (calldata->roc && |
7fdab069 | 2223 | pnfs_roc_drain(inode, &calldata->roc_barrier, task)) |
c8da19b9 | 2224 | goto out_wait; |
f7e8917a | 2225 | } |
88069f77 | 2226 | |
516a6af6 | 2227 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2228 | calldata->timestamp = jiffies; |
7fdab069 | 2229 | if (nfs4_setup_sequence(NFS_SERVER(inode), |
9d12b216 TM |
2230 | &calldata->arg.seq_args, |
2231 | &calldata->res.seq_res, | |
2240a9e2 TM |
2232 | task) != 0) |
2233 | nfs_release_seqid(calldata->arg.seqid); | |
a3ca5651 | 2234 | dprintk("%s: done!\n", __func__); |
c8da19b9 TM |
2235 | return; |
2236 | out_no_action: | |
2237 | task->tk_action = NULL; | |
2238 | out_wait: | |
2239 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
1da177e4 LT |
2240 | } |
2241 | ||
963d8fe5 | 2242 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2243 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2244 | .rpc_call_done = nfs4_close_done, |
2245 | .rpc_release = nfs4_free_closedata, | |
2246 | }; | |
2247 | ||
1da177e4 LT |
2248 | /* |
2249 | * It is possible for data to be read/written from a mem-mapped file | |
2250 | * after the sys_close call (which hits the vfs layer as a flush). | |
2251 | * This means that we can't safely call nfsv4 close on a file until | |
2252 | * the inode is cleared. This in turn means that we are not good | |
2253 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2254 | * share state even when we are done with one of the three share | |
2255 | * stateid's in the inode. | |
2256 | * | |
2257 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2258 | */ | |
1f7977c1 | 2259 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) |
1da177e4 | 2260 | { |
4a35bd41 | 2261 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2262 | struct nfs4_closedata *calldata; |
b39e625b TM |
2263 | struct nfs4_state_owner *sp = state->owner; |
2264 | struct rpc_task *task; | |
5138fde0 TM |
2265 | struct rpc_message msg = { |
2266 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2267 | .rpc_cred = state->owner->so_cred, | |
2268 | }; | |
c970aa85 TM |
2269 | struct rpc_task_setup task_setup_data = { |
2270 | .rpc_client = server->client, | |
5138fde0 | 2271 | .rpc_message = &msg, |
c970aa85 | 2272 | .callback_ops = &nfs4_close_ops, |
101070ca | 2273 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2274 | .flags = RPC_TASK_ASYNC, |
2275 | }; | |
9512135d | 2276 | int status = -ENOMEM; |
1da177e4 | 2277 | |
8535b2be | 2278 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2279 | if (calldata == NULL) |
9512135d | 2280 | goto out; |
9d12b216 | 2281 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2282 | calldata->inode = state->inode; |
1da177e4 | 2283 | calldata->state = state; |
4a35bd41 | 2284 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2285 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2286 | /* Serialization for the sequence id */ |
8535b2be | 2287 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2288 | if (calldata->arg.seqid == NULL) |
2289 | goto out_free_calldata; | |
dc0b027d | 2290 | calldata->arg.fmode = 0; |
a65318bf | 2291 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2292 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2293 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2294 | calldata->res.server = server; |
1f7977c1 | 2295 | calldata->roc = pnfs_roc(state->inode); |
643168c2 | 2296 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2297 | |
1174dd1f TM |
2298 | msg.rpc_argp = &calldata->arg; |
2299 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2300 | task_setup_data.callback_data = calldata; |
2301 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2302 | if (IS_ERR(task)) |
2303 | return PTR_ERR(task); | |
a49c3c77 TM |
2304 | status = 0; |
2305 | if (wait) | |
2306 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2307 | rpc_put_task(task); |
a49c3c77 | 2308 | return status; |
9512135d TM |
2309 | out_free_calldata: |
2310 | kfree(calldata); | |
2311 | out: | |
b39e625b TM |
2312 | nfs4_put_open_state(state); |
2313 | nfs4_put_state_owner(sp); | |
9512135d | 2314 | return status; |
1da177e4 LT |
2315 | } |
2316 | ||
2b484297 | 2317 | static struct inode * |
cd9a1c0e | 2318 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2319 | { |
1da177e4 | 2320 | struct nfs4_state *state; |
1da177e4 | 2321 | |
565277f6 | 2322 | /* Protect against concurrent sillydeletes */ |
82be417a AA |
2323 | state = nfs4_do_open(dir, ctx->dentry, ctx->mode, open_flags, attr, |
2324 | ctx->cred, &ctx->mdsthreshold); | |
f46e0bd3 TM |
2325 | if (IS_ERR(state)) |
2326 | return ERR_CAST(state); | |
cd9a1c0e | 2327 | ctx->state = state; |
f46e0bd3 | 2328 | return igrab(state->inode); |
1da177e4 LT |
2329 | } |
2330 | ||
1185a552 | 2331 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2332 | { |
2333 | if (ctx->state == NULL) | |
2334 | return; | |
2335 | if (is_sync) | |
643168c2 | 2336 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2337 | else |
643168c2 | 2338 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2339 | } |
1da177e4 LT |
2340 | |
2341 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2342 | { | |
43652ad5 BH |
2343 | struct nfs4_server_caps_arg args = { |
2344 | .fhandle = fhandle, | |
2345 | }; | |
1da177e4 LT |
2346 | struct nfs4_server_caps_res res = {}; |
2347 | struct rpc_message msg = { | |
2348 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2349 | .rpc_argp = &args, |
1da177e4 LT |
2350 | .rpc_resp = &res, |
2351 | }; | |
2352 | int status; | |
2353 | ||
7c513058 | 2354 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2355 | if (status == 0) { |
2356 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2357 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2358 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2359 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2360 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2361 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2362 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2363 | server->caps |= NFS_CAP_ACLS; | |
2364 | if (res.has_links != 0) | |
2365 | server->caps |= NFS_CAP_HARDLINKS; | |
2366 | if (res.has_symlinks != 0) | |
2367 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2368 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2369 | server->caps |= NFS_CAP_FILEID; | |
2370 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2371 | server->caps |= NFS_CAP_MODE; | |
2372 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2373 | server->caps |= NFS_CAP_NLINK; | |
2374 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2375 | server->caps |= NFS_CAP_OWNER; | |
2376 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2377 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2378 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2379 | server->caps |= NFS_CAP_ATIME; | |
2380 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2381 | server->caps |= NFS_CAP_CTIME; | |
2382 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2383 | server->caps |= NFS_CAP_MTIME; | |
2384 | ||
a65318bf TM |
2385 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2386 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2387 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 | 2388 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 2389 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 2390 | } |
cccef3b9 | 2391 | |
1da177e4 LT |
2392 | return status; |
2393 | } | |
2394 | ||
55a97593 | 2395 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2396 | { |
2397 | struct nfs4_exception exception = { }; | |
2398 | int err; | |
2399 | do { | |
2400 | err = nfs4_handle_exception(server, | |
2401 | _nfs4_server_capabilities(server, fhandle), | |
2402 | &exception); | |
2403 | } while (exception.retry); | |
2404 | return err; | |
2405 | } | |
2406 | ||
2407 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2408 | struct nfs_fsinfo *info) | |
2409 | { | |
1da177e4 LT |
2410 | struct nfs4_lookup_root_arg args = { |
2411 | .bitmask = nfs4_fattr_bitmap, | |
2412 | }; | |
2413 | struct nfs4_lookup_res res = { | |
2414 | .server = server, | |
0e574af1 | 2415 | .fattr = info->fattr, |
1da177e4 LT |
2416 | .fh = fhandle, |
2417 | }; | |
2418 | struct rpc_message msg = { | |
2419 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2420 | .rpc_argp = &args, | |
2421 | .rpc_resp = &res, | |
2422 | }; | |
008f55d0 | 2423 | |
0e574af1 | 2424 | nfs_fattr_init(info->fattr); |
7c513058 | 2425 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2426 | } |
2427 | ||
2428 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2429 | struct nfs_fsinfo *info) | |
2430 | { | |
2431 | struct nfs4_exception exception = { }; | |
2432 | int err; | |
2433 | do { | |
fb8a5ba8 BS |
2434 | err = _nfs4_lookup_root(server, fhandle, info); |
2435 | switch (err) { | |
2436 | case 0: | |
2437 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 2438 | goto out; |
fb8a5ba8 BS |
2439 | default: |
2440 | err = nfs4_handle_exception(server, err, &exception); | |
2441 | } | |
1da177e4 | 2442 | } while (exception.retry); |
05e9cfb4 | 2443 | out: |
1da177e4 LT |
2444 | return err; |
2445 | } | |
2446 | ||
8f70e95f BS |
2447 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2448 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2449 | { | |
2450 | struct rpc_auth *auth; | |
2451 | int ret; | |
2452 | ||
2453 | auth = rpcauth_create(flavor, server->client); | |
e8d920c5 | 2454 | if (IS_ERR(auth)) { |
8f70e95f BS |
2455 | ret = -EIO; |
2456 | goto out; | |
2457 | } | |
2458 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2459 | out: |
2460 | return ret; | |
2461 | } | |
2462 | ||
801a16dc | 2463 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2464 | struct nfs_fsinfo *info) |
1da177e4 | 2465 | { |
8f70e95f | 2466 | int i, len, status = 0; |
0fabee24 | 2467 | rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS]; |
1da177e4 | 2468 | |
6a1a1e34 | 2469 | len = rpcauth_list_flavors(flav_array, ARRAY_SIZE(flav_array)); |
4ea8fed5 TM |
2470 | if (len < 0) |
2471 | return len; | |
8f70e95f BS |
2472 | |
2473 | for (i = 0; i < len; i++) { | |
6a1a1e34 CL |
2474 | /* AUTH_UNIX is the default flavor if none was specified, |
2475 | * thus has already been tried. */ | |
2476 | if (flav_array[i] == RPC_AUTH_UNIX) | |
2477 | continue; | |
2478 | ||
8f70e95f | 2479 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); |
fb8a5ba8 | 2480 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2481 | continue; |
2482 | break; | |
8f70e95f | 2483 | } |
fb8a5ba8 BS |
2484 | /* |
2485 | * -EACCESS could mean that the user doesn't have correct permissions | |
2486 | * to access the mount. It could also mean that we tried to mount | |
2487 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2488 | * existing mount programs don't handle -EACCES very well so it should | |
2489 | * be mapped to -EPERM instead. | |
2490 | */ | |
2491 | if (status == -EACCES) | |
2492 | status = -EPERM; | |
801a16dc BS |
2493 | return status; |
2494 | } | |
2495 | ||
2496 | /* | |
2497 | * get the file handle for the "/" directory on the server | |
2498 | */ | |
3028eb2b BS |
2499 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
2500 | struct nfs_fsinfo *info) | |
801a16dc | 2501 | { |
fca78d6d | 2502 | int minor_version = server->nfs_client->cl_minorversion; |
801a16dc | 2503 | int status = nfs4_lookup_root(server, fhandle, info); |
fb8a5ba8 BS |
2504 | if ((status == -NFS4ERR_WRONGSEC) && !(server->flags & NFS_MOUNT_SECFLAVOUR)) |
2505 | /* | |
2506 | * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM | |
2507 | * by nfs4_map_errors() as this function exits. | |
2508 | */ | |
fca78d6d | 2509 | status = nfs_v4_minor_ops[minor_version]->find_root_sec(server, fhandle, info); |
1da177e4 LT |
2510 | if (status == 0) |
2511 | status = nfs4_server_capabilities(server, fhandle); | |
2512 | if (status == 0) | |
2513 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2514 | return nfs4_map_errors(status); |
1da177e4 LT |
2515 | } |
2516 | ||
bae36241 BS |
2517 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
2518 | struct nfs_fsinfo *info) | |
2519 | { | |
2520 | int error; | |
2521 | struct nfs_fattr *fattr = info->fattr; | |
2522 | ||
2523 | error = nfs4_server_capabilities(server, mntfh); | |
2524 | if (error < 0) { | |
2525 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
2526 | return error; | |
2527 | } | |
2528 | ||
2529 | error = nfs4_proc_getattr(server, mntfh, fattr); | |
2530 | if (error < 0) { | |
2531 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
2532 | return error; | |
2533 | } | |
2534 | ||
2535 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
2536 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
2537 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
2538 | ||
2539 | return error; | |
2540 | } | |
2541 | ||
6b97fd3d MN |
2542 | /* |
2543 | * Get locations and (maybe) other attributes of a referral. | |
2544 | * Note that we'll actually follow the referral later when | |
2545 | * we detect fsid mismatch in inode revalidation | |
2546 | */ | |
f05d147f BS |
2547 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
2548 | const struct qstr *name, struct nfs_fattr *fattr, | |
2549 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
2550 | { |
2551 | int status = -ENOMEM; | |
2552 | struct page *page = NULL; | |
2553 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2554 | |
2555 | page = alloc_page(GFP_KERNEL); | |
2556 | if (page == NULL) | |
2557 | goto out; | |
2558 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2559 | if (locations == NULL) | |
2560 | goto out; | |
2561 | ||
f05d147f | 2562 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
2563 | if (status != 0) |
2564 | goto out; | |
2565 | /* Make sure server returned a different fsid for the referral */ | |
2566 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2567 | dprintk("%s: server did not return a different fsid for" |
2568 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2569 | status = -EIO; |
2570 | goto out; | |
2571 | } | |
533eb461 AA |
2572 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2573 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2574 | |
533eb461 | 2575 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2576 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2577 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2578 | out: | |
2579 | if (page) | |
2580 | __free_page(page); | |
5d7ca35a | 2581 | kfree(locations); |
6b97fd3d MN |
2582 | return status; |
2583 | } | |
2584 | ||
1da177e4 LT |
2585 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2586 | { | |
2587 | struct nfs4_getattr_arg args = { | |
2588 | .fh = fhandle, | |
2589 | .bitmask = server->attr_bitmask, | |
2590 | }; | |
2591 | struct nfs4_getattr_res res = { | |
2592 | .fattr = fattr, | |
2593 | .server = server, | |
2594 | }; | |
2595 | struct rpc_message msg = { | |
2596 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2597 | .rpc_argp = &args, | |
2598 | .rpc_resp = &res, | |
2599 | }; | |
2600 | ||
0e574af1 | 2601 | nfs_fattr_init(fattr); |
7c513058 | 2602 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2603 | } |
2604 | ||
2605 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2606 | { | |
2607 | struct nfs4_exception exception = { }; | |
2608 | int err; | |
2609 | do { | |
2610 | err = nfs4_handle_exception(server, | |
2611 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2612 | &exception); | |
2613 | } while (exception.retry); | |
2614 | return err; | |
2615 | } | |
2616 | ||
2617 | /* | |
2618 | * The file is not closed if it is opened due to the a request to change | |
2619 | * the size of the file. The open call will not be needed once the | |
2620 | * VFS layer lookup-intents are implemented. | |
2621 | * | |
2622 | * Close is called when the inode is destroyed. | |
2623 | * If we haven't opened the file for O_WRONLY, we | |
2624 | * need to in the size_change case to obtain a stateid. | |
2625 | * | |
2626 | * Got race? | |
2627 | * Because OPEN is always done by name in nfsv4, it is | |
2628 | * possible that we opened a different file by the same | |
2629 | * name. We can recognize this race condition, but we | |
2630 | * can't do anything about it besides returning an error. | |
2631 | * | |
2632 | * This will be fixed with VFS changes (lookup-intent). | |
2633 | */ | |
2634 | static int | |
2635 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2636 | struct iattr *sattr) | |
2637 | { | |
08e9eac4 | 2638 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2639 | struct rpc_cred *cred = NULL; |
d530838b | 2640 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2641 | int status; |
2642 | ||
8a1636c4 | 2643 | if (pnfs_ld_layoutret_on_setattr(inode)) |
24028672 | 2644 | pnfs_commit_and_return_layout(inode); |
8a1636c4 | 2645 | |
0e574af1 | 2646 | nfs_fattr_init(fattr); |
1da177e4 | 2647 | |
2669940d AA |
2648 | /* Deal with open(O_TRUNC) */ |
2649 | if (sattr->ia_valid & ATTR_OPEN) | |
2650 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME|ATTR_OPEN); | |
2651 | ||
2652 | /* Optimization: if the end result is no change, don't RPC */ | |
2653 | if ((sattr->ia_valid & ~(ATTR_FILE)) == 0) | |
2654 | return 0; | |
2655 | ||
d530838b | 2656 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2657 | if (sattr->ia_valid & ATTR_FILE) { |
2658 | struct nfs_open_context *ctx; | |
2659 | ||
2660 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2661 | if (ctx) { |
2662 | cred = ctx->cred; | |
2663 | state = ctx->state; | |
2664 | } | |
659bfcd6 | 2665 | } |
08e9eac4 | 2666 | |
659bfcd6 | 2667 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2668 | if (status == 0) |
2669 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2670 | return status; |
2671 | } | |
2672 | ||
0c2e53f1 TM |
2673 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
2674 | const struct qstr *name, struct nfs_fh *fhandle, | |
2675 | struct nfs_fattr *fattr) | |
2b3de441 | 2676 | { |
0c2e53f1 | 2677 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
2678 | int status; |
2679 | struct nfs4_lookup_arg args = { | |
2680 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 2681 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
2682 | .name = name, |
2683 | }; | |
2684 | struct nfs4_lookup_res res = { | |
2685 | .server = server, | |
2686 | .fattr = fattr, | |
2687 | .fh = fhandle, | |
2688 | }; | |
2689 | struct rpc_message msg = { | |
2690 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2691 | .rpc_argp = &args, | |
2692 | .rpc_resp = &res, | |
2693 | }; | |
2694 | ||
2695 | nfs_fattr_init(fattr); | |
2696 | ||
1da177e4 | 2697 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 2698 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2699 | dprintk("NFS reply lookup: %d\n", status); |
2700 | return status; | |
2701 | } | |
2702 | ||
72de53ec | 2703 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 2704 | { |
7ebb9315 | 2705 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 2706 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
2707 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
2708 | fattr->nlink = 2; | |
2709 | } | |
2710 | ||
72de53ec BS |
2711 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
2712 | struct qstr *name, struct nfs_fh *fhandle, | |
2713 | struct nfs_fattr *fattr) | |
1da177e4 LT |
2714 | { |
2715 | struct nfs4_exception exception = { }; | |
72de53ec | 2716 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
2717 | int err; |
2718 | do { | |
72de53ec BS |
2719 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr); |
2720 | switch (err) { | |
08ef7bd3 | 2721 | case -NFS4ERR_BADNAME: |
72de53ec BS |
2722 | err = -ENOENT; |
2723 | goto out; | |
0c2e53f1 | 2724 | case -NFS4ERR_MOVED: |
f05d147f | 2725 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
72de53ec | 2726 | goto out; |
0c2e53f1 | 2727 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
2728 | err = -EPERM; |
2729 | if (client != *clnt) | |
2730 | goto out; | |
2731 | ||
2732 | client = nfs4_create_sec_client(client, dir, name); | |
2733 | if (IS_ERR(client)) | |
2734 | return PTR_ERR(client); | |
2735 | ||
2736 | exception.retry = 1; | |
2737 | break; | |
2738 | default: | |
2739 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 2740 | } |
1da177e4 | 2741 | } while (exception.retry); |
72de53ec BS |
2742 | |
2743 | out: | |
2744 | if (err == 0) | |
2745 | *clnt = client; | |
2746 | else if (client != *clnt) | |
2747 | rpc_shutdown_client(client); | |
2748 | ||
1da177e4 LT |
2749 | return err; |
2750 | } | |
2751 | ||
80a16b21 | 2752 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, |
72de53ec BS |
2753 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2754 | { | |
2755 | int status; | |
2756 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
2757 | ||
2758 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2759 | if (client != NFS_CLIENT(dir)) { | |
2760 | rpc_shutdown_client(client); | |
2761 | nfs_fixup_secinfo_attributes(fattr); | |
2762 | } | |
2763 | return status; | |
2764 | } | |
2765 | ||
f05d147f BS |
2766 | struct rpc_clnt * |
2767 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, | |
2768 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2769 | { | |
2770 | int status; | |
2771 | struct rpc_clnt *client = rpc_clone_client(NFS_CLIENT(dir)); | |
2772 | ||
2773 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2774 | if (status < 0) { | |
2775 | rpc_shutdown_client(client); | |
2776 | return ERR_PTR(status); | |
2777 | } | |
2778 | return client; | |
2779 | } | |
2780 | ||
1da177e4 LT |
2781 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
2782 | { | |
76b32999 | 2783 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2784 | struct nfs4_accessargs args = { |
2785 | .fh = NFS_FH(inode), | |
a4980e78 | 2786 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
2787 | }; |
2788 | struct nfs4_accessres res = { | |
2789 | .server = server, | |
1da177e4 | 2790 | }; |
1da177e4 LT |
2791 | struct rpc_message msg = { |
2792 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2793 | .rpc_argp = &args, | |
2794 | .rpc_resp = &res, | |
2795 | .rpc_cred = entry->cred, | |
2796 | }; | |
2797 | int mode = entry->mask; | |
2798 | int status; | |
2799 | ||
2800 | /* | |
2801 | * Determine which access bits we want to ask for... | |
2802 | */ | |
2803 | if (mode & MAY_READ) | |
2804 | args.access |= NFS4_ACCESS_READ; | |
2805 | if (S_ISDIR(inode->i_mode)) { | |
2806 | if (mode & MAY_WRITE) | |
2807 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2808 | if (mode & MAY_EXEC) | |
2809 | args.access |= NFS4_ACCESS_LOOKUP; | |
2810 | } else { | |
2811 | if (mode & MAY_WRITE) | |
2812 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2813 | if (mode & MAY_EXEC) | |
2814 | args.access |= NFS4_ACCESS_EXECUTE; | |
2815 | } | |
c407d41a TM |
2816 | |
2817 | res.fattr = nfs_alloc_fattr(); | |
2818 | if (res.fattr == NULL) | |
2819 | return -ENOMEM; | |
2820 | ||
7c513058 | 2821 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 2822 | if (!status) { |
6168f62c | 2823 | nfs_access_set_mask(entry, res.access); |
c407d41a | 2824 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2825 | } |
c407d41a | 2826 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2827 | return status; |
2828 | } | |
2829 | ||
2830 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2831 | { | |
2832 | struct nfs4_exception exception = { }; | |
2833 | int err; | |
2834 | do { | |
2835 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2836 | _nfs4_proc_access(inode, entry), | |
2837 | &exception); | |
2838 | } while (exception.retry); | |
2839 | return err; | |
2840 | } | |
2841 | ||
2842 | /* | |
2843 | * TODO: For the time being, we don't try to get any attributes | |
2844 | * along with any of the zero-copy operations READ, READDIR, | |
2845 | * READLINK, WRITE. | |
2846 | * | |
2847 | * In the case of the first three, we want to put the GETATTR | |
2848 | * after the read-type operation -- this is because it is hard | |
2849 | * to predict the length of a GETATTR response in v4, and thus | |
2850 | * align the READ data correctly. This means that the GETATTR | |
2851 | * may end up partially falling into the page cache, and we should | |
2852 | * shift it into the 'tail' of the xdr_buf before processing. | |
2853 | * To do this efficiently, we need to know the total length | |
2854 | * of data received, which doesn't seem to be available outside | |
2855 | * of the RPC layer. | |
2856 | * | |
2857 | * In the case of WRITE, we also want to put the GETATTR after | |
2858 | * the operation -- in this case because we want to make sure | |
140150db | 2859 | * we get the post-operation mtime and size. |
1da177e4 LT |
2860 | * |
2861 | * Both of these changes to the XDR layer would in fact be quite | |
2862 | * minor, but I decided to leave them for a subsequent patch. | |
2863 | */ | |
2864 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2865 | unsigned int pgbase, unsigned int pglen) | |
2866 | { | |
2867 | struct nfs4_readlink args = { | |
2868 | .fh = NFS_FH(inode), | |
2869 | .pgbase = pgbase, | |
2870 | .pglen = pglen, | |
2871 | .pages = &page, | |
2872 | }; | |
f50c7000 | 2873 | struct nfs4_readlink_res res; |
1da177e4 LT |
2874 | struct rpc_message msg = { |
2875 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2876 | .rpc_argp = &args, | |
f50c7000 | 2877 | .rpc_resp = &res, |
1da177e4 LT |
2878 | }; |
2879 | ||
7c513058 | 2880 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2881 | } |
2882 | ||
2883 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2884 | unsigned int pgbase, unsigned int pglen) | |
2885 | { | |
2886 | struct nfs4_exception exception = { }; | |
2887 | int err; | |
2888 | do { | |
2889 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2890 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2891 | &exception); | |
2892 | } while (exception.retry); | |
2893 | return err; | |
2894 | } | |
2895 | ||
1da177e4 | 2896 | /* |
8867fe58 | 2897 | * This is just for mknod. open(O_CREAT) will always do ->open_context(). |
1da177e4 | 2898 | */ |
1da177e4 LT |
2899 | static int |
2900 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 2901 | int flags) |
1da177e4 | 2902 | { |
8867fe58 | 2903 | struct nfs_open_context *ctx; |
1da177e4 | 2904 | struct nfs4_state *state; |
1da177e4 LT |
2905 | int status = 0; |
2906 | ||
8867fe58 MS |
2907 | ctx = alloc_nfs_open_context(dentry, FMODE_READ); |
2908 | if (IS_ERR(ctx)) | |
2909 | return PTR_ERR(ctx); | |
2910 | ||
a8a5da99 | 2911 | sattr->ia_mode &= ~current_umask(); |
8626e4a4 TM |
2912 | state = nfs4_do_open(dir, dentry, ctx->mode, |
2913 | flags, sattr, ctx->cred, | |
2914 | &ctx->mdsthreshold); | |
d4d9cdcb | 2915 | d_drop(dentry); |
1da177e4 LT |
2916 | if (IS_ERR(state)) { |
2917 | status = PTR_ERR(state); | |
c0204fd2 | 2918 | goto out; |
1da177e4 | 2919 | } |
d4d9cdcb | 2920 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2921 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
8867fe58 | 2922 | ctx->state = state; |
1da177e4 | 2923 | out: |
8867fe58 | 2924 | put_nfs_open_context(ctx); |
1da177e4 LT |
2925 | return status; |
2926 | } | |
2927 | ||
2928 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2929 | { | |
16e42959 | 2930 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2931 | struct nfs_removeargs args = { |
1da177e4 | 2932 | .fh = NFS_FH(dir), |
26fe5750 | 2933 | .name = *name, |
16e42959 | 2934 | }; |
4fdc17b2 | 2935 | struct nfs_removeres res = { |
16e42959 | 2936 | .server = server, |
1da177e4 | 2937 | }; |
1da177e4 | 2938 | struct rpc_message msg = { |
4fdc17b2 TM |
2939 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
2940 | .rpc_argp = &args, | |
2941 | .rpc_resp = &res, | |
1da177e4 | 2942 | }; |
778d2817 | 2943 | int status; |
1da177e4 | 2944 | |
7c513058 | 2945 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 2946 | if (status == 0) |
16e42959 | 2947 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
2948 | return status; |
2949 | } | |
2950 | ||
2951 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2952 | { | |
2953 | struct nfs4_exception exception = { }; | |
2954 | int err; | |
2955 | do { | |
2956 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2957 | _nfs4_proc_remove(dir, name), | |
2958 | &exception); | |
2959 | } while (exception.retry); | |
2960 | return err; | |
2961 | } | |
2962 | ||
e4eff1a6 | 2963 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 2964 | { |
e4eff1a6 TM |
2965 | struct nfs_server *server = NFS_SERVER(dir); |
2966 | struct nfs_removeargs *args = msg->rpc_argp; | |
2967 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 2968 | |
e4eff1a6 | 2969 | res->server = server; |
1da177e4 | 2970 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
9d12b216 | 2971 | nfs41_init_sequence(&args->seq_args, &res->seq_res, 1); |
1da177e4 LT |
2972 | } |
2973 | ||
34e137cc BS |
2974 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
2975 | { | |
d9afbd1b TM |
2976 | nfs4_setup_sequence(NFS_SERVER(data->dir), |
2977 | &data->args.seq_args, | |
2978 | &data->res.seq_res, | |
2979 | task); | |
1da177e4 LT |
2980 | } |
2981 | ||
e4eff1a6 | 2982 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 2983 | { |
e4eff1a6 TM |
2984 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
2985 | ||
14516c3a TM |
2986 | if (!nfs4_sequence_done(task, &res->seq_res)) |
2987 | return 0; | |
9e33bed5 | 2988 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
2989 | return 0; |
2990 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 2991 | return 1; |
1da177e4 LT |
2992 | } |
2993 | ||
d3d4152a JL |
2994 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
2995 | { | |
2996 | struct nfs_server *server = NFS_SERVER(dir); | |
2997 | struct nfs_renameargs *arg = msg->rpc_argp; | |
2998 | struct nfs_renameres *res = msg->rpc_resp; | |
2999 | ||
3000 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 3001 | res->server = server; |
9d12b216 | 3002 | nfs41_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
3003 | } |
3004 | ||
c6bfa1a1 BS |
3005 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
3006 | { | |
d9afbd1b TM |
3007 | nfs4_setup_sequence(NFS_SERVER(data->old_dir), |
3008 | &data->args.seq_args, | |
3009 | &data->res.seq_res, | |
3010 | task); | |
d3d4152a JL |
3011 | } |
3012 | ||
3013 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
3014 | struct inode *new_dir) | |
3015 | { | |
3016 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
3017 | ||
3018 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
3019 | return 0; | |
3020 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
3021 | return 0; | |
3022 | ||
3023 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 3024 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
3025 | return 1; |
3026 | } | |
3027 | ||
1da177e4 LT |
3028 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
3029 | struct inode *new_dir, struct qstr *new_name) | |
3030 | { | |
6caf2c82 | 3031 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 3032 | struct nfs_renameargs arg = { |
1da177e4 LT |
3033 | .old_dir = NFS_FH(old_dir), |
3034 | .new_dir = NFS_FH(new_dir), | |
3035 | .old_name = old_name, | |
3036 | .new_name = new_name, | |
6caf2c82 | 3037 | }; |
e8582a8b | 3038 | struct nfs_renameres res = { |
6caf2c82 | 3039 | .server = server, |
1da177e4 | 3040 | }; |
1da177e4 LT |
3041 | struct rpc_message msg = { |
3042 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
3043 | .rpc_argp = &arg, | |
3044 | .rpc_resp = &res, | |
3045 | }; | |
011fff72 | 3046 | int status = -ENOMEM; |
1da177e4 | 3047 | |
7c513058 | 3048 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
3049 | if (!status) { |
3050 | update_changeattr(old_dir, &res.old_cinfo); | |
3051 | update_changeattr(new_dir, &res.new_cinfo); | |
3052 | } | |
3053 | return status; | |
3054 | } | |
3055 | ||
3056 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
3057 | struct inode *new_dir, struct qstr *new_name) | |
3058 | { | |
3059 | struct nfs4_exception exception = { }; | |
3060 | int err; | |
3061 | do { | |
3062 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
3063 | _nfs4_proc_rename(old_dir, old_name, | |
3064 | new_dir, new_name), | |
3065 | &exception); | |
3066 | } while (exception.retry); | |
3067 | return err; | |
3068 | } | |
3069 | ||
3070 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3071 | { | |
91ba2eee | 3072 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3073 | struct nfs4_link_arg arg = { |
3074 | .fh = NFS_FH(inode), | |
3075 | .dir_fh = NFS_FH(dir), | |
3076 | .name = name, | |
91ba2eee TM |
3077 | .bitmask = server->attr_bitmask, |
3078 | }; | |
91ba2eee TM |
3079 | struct nfs4_link_res res = { |
3080 | .server = server, | |
1da177e4 | 3081 | }; |
1da177e4 LT |
3082 | struct rpc_message msg = { |
3083 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
3084 | .rpc_argp = &arg, | |
91ba2eee | 3085 | .rpc_resp = &res, |
1da177e4 | 3086 | }; |
136f2627 TM |
3087 | int status = -ENOMEM; |
3088 | ||
3089 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 3090 | if (res.fattr == NULL) |
136f2627 | 3091 | goto out; |
1da177e4 | 3092 | |
7c513058 | 3093 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
3094 | if (!status) { |
3095 | update_changeattr(dir, &res.cinfo); | |
73a3d07c | 3096 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 3097 | } |
136f2627 | 3098 | out: |
136f2627 | 3099 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3100 | return status; |
3101 | } | |
3102 | ||
3103 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3104 | { | |
3105 | struct nfs4_exception exception = { }; | |
3106 | int err; | |
3107 | do { | |
3108 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3109 | _nfs4_proc_link(inode, dir, name), | |
3110 | &exception); | |
3111 | } while (exception.retry); | |
3112 | return err; | |
3113 | } | |
3114 | ||
57dc9a57 TM |
3115 | struct nfs4_createdata { |
3116 | struct rpc_message msg; | |
3117 | struct nfs4_create_arg arg; | |
3118 | struct nfs4_create_res res; | |
3119 | struct nfs_fh fh; | |
3120 | struct nfs_fattr fattr; | |
57dc9a57 TM |
3121 | }; |
3122 | ||
3123 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
3124 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
3125 | { | |
3126 | struct nfs4_createdata *data; | |
3127 | ||
3128 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3129 | if (data != NULL) { | |
3130 | struct nfs_server *server = NFS_SERVER(dir); | |
3131 | ||
3132 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
3133 | data->msg.rpc_argp = &data->arg; | |
3134 | data->msg.rpc_resp = &data->res; | |
3135 | data->arg.dir_fh = NFS_FH(dir); | |
3136 | data->arg.server = server; | |
3137 | data->arg.name = name; | |
3138 | data->arg.attrs = sattr; | |
3139 | data->arg.ftype = ftype; | |
3140 | data->arg.bitmask = server->attr_bitmask; | |
3141 | data->res.server = server; | |
3142 | data->res.fh = &data->fh; | |
3143 | data->res.fattr = &data->fattr; | |
57dc9a57 | 3144 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
3145 | } |
3146 | return data; | |
3147 | } | |
3148 | ||
3149 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3150 | { | |
7c513058 | 3151 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3152 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3153 | if (status == 0) { |
3154 | update_changeattr(dir, &data->res.dir_cinfo); | |
57dc9a57 TM |
3155 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); |
3156 | } | |
3157 | return status; | |
3158 | } | |
3159 | ||
3160 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3161 | { | |
3162 | kfree(data); | |
3163 | } | |
3164 | ||
4f390c15 | 3165 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3166 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 3167 | { |
57dc9a57 TM |
3168 | struct nfs4_createdata *data; |
3169 | int status = -ENAMETOOLONG; | |
1da177e4 | 3170 | |
94a6d753 | 3171 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 3172 | goto out; |
4f390c15 | 3173 | |
57dc9a57 TM |
3174 | status = -ENOMEM; |
3175 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
3176 | if (data == NULL) | |
3177 | goto out; | |
3178 | ||
3179 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
3180 | data->arg.u.symlink.pages = &page; | |
3181 | data->arg.u.symlink.len = len; | |
1da177e4 | 3182 | |
57dc9a57 TM |
3183 | status = nfs4_do_create(dir, dentry, data); |
3184 | ||
3185 | nfs4_free_createdata(data); | |
3186 | out: | |
1da177e4 LT |
3187 | return status; |
3188 | } | |
3189 | ||
4f390c15 | 3190 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3191 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
3192 | { |
3193 | struct nfs4_exception exception = { }; | |
3194 | int err; | |
3195 | do { | |
3196 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
3197 | _nfs4_proc_symlink(dir, dentry, page, |
3198 | len, sattr), | |
1da177e4 LT |
3199 | &exception); |
3200 | } while (exception.retry); | |
3201 | return err; | |
3202 | } | |
3203 | ||
3204 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3205 | struct iattr *sattr) | |
3206 | { | |
57dc9a57 TM |
3207 | struct nfs4_createdata *data; |
3208 | int status = -ENOMEM; | |
1da177e4 | 3209 | |
57dc9a57 TM |
3210 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3211 | if (data == NULL) | |
3212 | goto out; | |
3213 | ||
3214 | status = nfs4_do_create(dir, dentry, data); | |
3215 | ||
3216 | nfs4_free_createdata(data); | |
3217 | out: | |
1da177e4 LT |
3218 | return status; |
3219 | } | |
3220 | ||
3221 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3222 | struct iattr *sattr) | |
3223 | { | |
3224 | struct nfs4_exception exception = { }; | |
3225 | int err; | |
a8a5da99 AK |
3226 | |
3227 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3228 | do { |
3229 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3230 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
3231 | &exception); | |
3232 | } while (exception.retry); | |
3233 | return err; | |
3234 | } | |
3235 | ||
3236 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3237 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3238 | { |
3239 | struct inode *dir = dentry->d_inode; | |
3240 | struct nfs4_readdir_arg args = { | |
3241 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3242 | .pages = pages, |
1da177e4 LT |
3243 | .pgbase = 0, |
3244 | .count = count, | |
96d25e53 | 3245 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3246 | .plus = plus, |
1da177e4 LT |
3247 | }; |
3248 | struct nfs4_readdir_res res; | |
3249 | struct rpc_message msg = { | |
3250 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3251 | .rpc_argp = &args, | |
3252 | .rpc_resp = &res, | |
3253 | .rpc_cred = cred, | |
3254 | }; | |
3255 | int status; | |
3256 | ||
3110ff80 | 3257 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
3258 | dentry->d_parent->d_name.name, |
3259 | dentry->d_name.name, | |
3260 | (unsigned long long)cookie); | |
c3f52af3 | 3261 | nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args); |
1da177e4 | 3262 | res.pgbase = args.pgbase; |
7c513058 | 3263 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3264 | if (status >= 0) { |
c3f52af3 | 3265 | memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3266 | status += args.pgbase; |
3267 | } | |
c4812998 TM |
3268 | |
3269 | nfs_invalidate_atime(dir); | |
3270 | ||
3110ff80 | 3271 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3272 | return status; |
3273 | } | |
3274 | ||
3275 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3276 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3277 | { |
3278 | struct nfs4_exception exception = { }; | |
3279 | int err; | |
3280 | do { | |
3281 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
3282 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 3283 | pages, count, plus), |
1da177e4 LT |
3284 | &exception); |
3285 | } while (exception.retry); | |
3286 | return err; | |
3287 | } | |
3288 | ||
3289 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3290 | struct iattr *sattr, dev_t rdev) | |
3291 | { | |
57dc9a57 TM |
3292 | struct nfs4_createdata *data; |
3293 | int mode = sattr->ia_mode; | |
3294 | int status = -ENOMEM; | |
1da177e4 | 3295 | |
57dc9a57 TM |
3296 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); |
3297 | if (data == NULL) | |
3298 | goto out; | |
3299 | ||
1da177e4 | 3300 | if (S_ISFIFO(mode)) |
57dc9a57 | 3301 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3302 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3303 | data->arg.ftype = NF4BLK; |
3304 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3305 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3306 | } |
3307 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3308 | data->arg.ftype = NF4CHR; |
3309 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3310 | data->arg.u.device.specdata2 = MINOR(rdev); | |
4ea8fed5 TM |
3311 | } else if (!S_ISSOCK(mode)) { |
3312 | status = -EINVAL; | |
3313 | goto out_free; | |
1da177e4 | 3314 | } |
1da177e4 | 3315 | |
57dc9a57 | 3316 | status = nfs4_do_create(dir, dentry, data); |
4ea8fed5 | 3317 | out_free: |
57dc9a57 TM |
3318 | nfs4_free_createdata(data); |
3319 | out: | |
1da177e4 LT |
3320 | return status; |
3321 | } | |
3322 | ||
3323 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3324 | struct iattr *sattr, dev_t rdev) | |
3325 | { | |
3326 | struct nfs4_exception exception = { }; | |
3327 | int err; | |
a8a5da99 AK |
3328 | |
3329 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3330 | do { |
3331 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3332 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
3333 | &exception); | |
3334 | } while (exception.retry); | |
3335 | return err; | |
3336 | } | |
3337 | ||
3338 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3339 | struct nfs_fsstat *fsstat) | |
3340 | { | |
3341 | struct nfs4_statfs_arg args = { | |
3342 | .fh = fhandle, | |
3343 | .bitmask = server->attr_bitmask, | |
3344 | }; | |
24ad148a BH |
3345 | struct nfs4_statfs_res res = { |
3346 | .fsstat = fsstat, | |
3347 | }; | |
1da177e4 LT |
3348 | struct rpc_message msg = { |
3349 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3350 | .rpc_argp = &args, | |
24ad148a | 3351 | .rpc_resp = &res, |
1da177e4 LT |
3352 | }; |
3353 | ||
0e574af1 | 3354 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3355 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3356 | } |
3357 | ||
3358 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3359 | { | |
3360 | struct nfs4_exception exception = { }; | |
3361 | int err; | |
3362 | do { | |
3363 | err = nfs4_handle_exception(server, | |
3364 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3365 | &exception); | |
3366 | } while (exception.retry); | |
3367 | return err; | |
3368 | } | |
3369 | ||
3370 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3371 | struct nfs_fsinfo *fsinfo) | |
3372 | { | |
3373 | struct nfs4_fsinfo_arg args = { | |
3374 | .fh = fhandle, | |
3375 | .bitmask = server->attr_bitmask, | |
3376 | }; | |
3dda5e43 BH |
3377 | struct nfs4_fsinfo_res res = { |
3378 | .fsinfo = fsinfo, | |
3379 | }; | |
1da177e4 LT |
3380 | struct rpc_message msg = { |
3381 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3382 | .rpc_argp = &args, | |
3dda5e43 | 3383 | .rpc_resp = &res, |
1da177e4 LT |
3384 | }; |
3385 | ||
7c513058 | 3386 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3387 | } |
3388 | ||
3389 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3390 | { | |
3391 | struct nfs4_exception exception = { }; | |
3392 | int err; | |
3393 | ||
3394 | do { | |
3395 | err = nfs4_handle_exception(server, | |
3396 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
3397 | &exception); | |
3398 | } while (exception.retry); | |
3399 | return err; | |
3400 | } | |
3401 | ||
3402 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3403 | { | |
e38eb650 BS |
3404 | int error; |
3405 | ||
0e574af1 | 3406 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 | 3407 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
dc182549 PT |
3408 | if (error == 0) { |
3409 | /* block layout checks this! */ | |
3410 | server->pnfs_blksize = fsinfo->blksize; | |
e38eb650 | 3411 | set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype); |
dc182549 | 3412 | } |
e38eb650 BS |
3413 | |
3414 | return error; | |
1da177e4 LT |
3415 | } |
3416 | ||
3417 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3418 | struct nfs_pathconf *pathconf) | |
3419 | { | |
3420 | struct nfs4_pathconf_arg args = { | |
3421 | .fh = fhandle, | |
3422 | .bitmask = server->attr_bitmask, | |
3423 | }; | |
d45b2989 BH |
3424 | struct nfs4_pathconf_res res = { |
3425 | .pathconf = pathconf, | |
3426 | }; | |
1da177e4 LT |
3427 | struct rpc_message msg = { |
3428 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3429 | .rpc_argp = &args, | |
d45b2989 | 3430 | .rpc_resp = &res, |
1da177e4 LT |
3431 | }; |
3432 | ||
3433 | /* None of the pathconf attributes are mandatory to implement */ | |
3434 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3435 | memset(pathconf, 0, sizeof(*pathconf)); | |
3436 | return 0; | |
3437 | } | |
3438 | ||
0e574af1 | 3439 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3440 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3441 | } |
3442 | ||
3443 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3444 | struct nfs_pathconf *pathconf) | |
3445 | { | |
3446 | struct nfs4_exception exception = { }; | |
3447 | int err; | |
3448 | ||
3449 | do { | |
3450 | err = nfs4_handle_exception(server, | |
3451 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3452 | &exception); | |
3453 | } while (exception.retry); | |
3454 | return err; | |
3455 | } | |
3456 | ||
d20581aa BH |
3457 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3458 | { | |
cd841605 | 3459 | nfs_invalidate_atime(data->header->inode); |
d20581aa BH |
3460 | } |
3461 | ||
cbdabc7f | 3462 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3463 | { |
cd841605 | 3464 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
1da177e4 | 3465 | |
9e33bed5 | 3466 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3467 | rpc_restart_call_prepare(task); |
ec06c096 | 3468 | return -EAGAIN; |
1da177e4 | 3469 | } |
8850df99 | 3470 | |
d20581aa | 3471 | __nfs4_read_done_cb(data); |
1da177e4 | 3472 | if (task->tk_status > 0) |
ec06c096 TM |
3473 | renew_lease(server, data->timestamp); |
3474 | return 0; | |
1da177e4 LT |
3475 | } |
3476 | ||
cbdabc7f AA |
3477 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3478 | { | |
3479 | ||
3480 | dprintk("--> %s\n", __func__); | |
3481 | ||
3482 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3483 | return -EAGAIN; | |
3484 | ||
d20581aa BH |
3485 | return data->read_done_cb ? data->read_done_cb(task, data) : |
3486 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
3487 | } |
3488 | ||
bdc7f021 | 3489 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3490 | { |
1da177e4 | 3491 | data->timestamp = jiffies; |
cbdabc7f | 3492 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3493 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
9d12b216 | 3494 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
1da177e4 LT |
3495 | } |
3496 | ||
ea7c3303 BS |
3497 | static void nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) |
3498 | { | |
d9afbd1b TM |
3499 | nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
3500 | &data->args.seq_args, | |
3501 | &data->res.seq_res, | |
3502 | task); | |
1da177e4 LT |
3503 | } |
3504 | ||
b029bc9b | 3505 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3506 | { |
cd841605 | 3507 | struct inode *inode = data->header->inode; |
1da177e4 | 3508 | |
9e33bed5 | 3509 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3510 | rpc_restart_call_prepare(task); |
788e7a89 | 3511 | return -EAGAIN; |
1da177e4 | 3512 | } |
4f9838c7 | 3513 | if (task->tk_status >= 0) { |
1da177e4 | 3514 | renew_lease(NFS_SERVER(inode), data->timestamp); |
5a37f851 | 3515 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); |
4f9838c7 | 3516 | } |
788e7a89 | 3517 | return 0; |
1da177e4 LT |
3518 | } |
3519 | ||
b029bc9b FI |
3520 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3521 | { | |
3522 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3523 | return -EAGAIN; | |
d20581aa BH |
3524 | return data->write_done_cb ? data->write_done_cb(task, data) : |
3525 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
3526 | } |
3527 | ||
5a37f851 TM |
3528 | static |
3529 | bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data *data) | |
a69aef14 | 3530 | { |
5a37f851 TM |
3531 | const struct nfs_pgio_header *hdr = data->header; |
3532 | ||
3533 | /* Don't request attributes for pNFS or O_DIRECT writes */ | |
3534 | if (data->ds_clp != NULL || hdr->dreq != NULL) | |
3535 | return false; | |
3536 | /* Otherwise, request attributes if and only if we don't hold | |
3537 | * a delegation | |
3538 | */ | |
011e2a7f | 3539 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 3540 | } |
a69aef14 | 3541 | |
bdc7f021 | 3542 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3543 | { |
cd841605 | 3544 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
bdc7f021 | 3545 | |
5a37f851 | 3546 | if (!nfs4_write_need_cache_consistency_data(data)) { |
7ffd1064 FI |
3547 | data->args.bitmask = NULL; |
3548 | data->res.fattr = NULL; | |
3549 | } else | |
3550 | data->args.bitmask = server->cache_consistency_bitmask; | |
5a37f851 | 3551 | |
b029bc9b FI |
3552 | if (!data->write_done_cb) |
3553 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3554 | data->res.server = server; |
1da177e4 LT |
3555 | data->timestamp = jiffies; |
3556 | ||
bdc7f021 | 3557 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
9d12b216 | 3558 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3559 | } |
3560 | ||
c6cb80d0 BS |
3561 | static void nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) |
3562 | { | |
d9afbd1b TM |
3563 | nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
3564 | &data->args.seq_args, | |
3565 | &data->res.seq_res, | |
3566 | task); | |
1da177e4 LT |
3567 | } |
3568 | ||
0b7c0153 | 3569 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 | 3570 | { |
d9afbd1b TM |
3571 | nfs4_setup_sequence(NFS_SERVER(data->inode), |
3572 | &data->args.seq_args, | |
3573 | &data->res.seq_res, | |
3574 | task); | |
1da177e4 LT |
3575 | } |
3576 | ||
0b7c0153 | 3577 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 3578 | { |
1da177e4 | 3579 | struct inode *inode = data->inode; |
14516c3a | 3580 | |
9e33bed5 | 3581 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
d00c5d43 | 3582 | rpc_restart_call_prepare(task); |
788e7a89 | 3583 | return -EAGAIN; |
1da177e4 | 3584 | } |
788e7a89 | 3585 | return 0; |
1da177e4 LT |
3586 | } |
3587 | ||
0b7c0153 | 3588 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
3589 | { |
3590 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3591 | return -EAGAIN; | |
0b7c0153 | 3592 | return data->commit_done_cb(task, data); |
5f452431 FI |
3593 | } |
3594 | ||
0b7c0153 | 3595 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 3596 | { |
788e7a89 | 3597 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 3598 | |
0b7c0153 FI |
3599 | if (data->commit_done_cb == NULL) |
3600 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 3601 | data->res.server = server; |
bdc7f021 | 3602 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
9d12b216 | 3603 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3604 | } |
3605 | ||
9bc4e3ca CL |
3606 | struct nfs4_renewdata { |
3607 | struct nfs_client *client; | |
3608 | unsigned long timestamp; | |
3609 | }; | |
3610 | ||
1da177e4 LT |
3611 | /* |
3612 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3613 | * standalone procedure for queueing an asynchronous RENEW. | |
3614 | */ | |
9bc4e3ca | 3615 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3616 | { |
9bc4e3ca CL |
3617 | struct nfs4_renewdata *data = calldata; |
3618 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3619 | |
0851de06 AB |
3620 | if (atomic_read(&clp->cl_count) > 1) |
3621 | nfs4_schedule_state_renewal(clp); | |
3622 | nfs_put_client(clp); | |
9bc4e3ca | 3623 | kfree(data); |
dc96aef9 AB |
3624 | } |
3625 | ||
9bc4e3ca | 3626 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3627 | { |
9bc4e3ca CL |
3628 | struct nfs4_renewdata *data = calldata; |
3629 | struct nfs_client *clp = data->client; | |
3630 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3631 | |
3632 | if (task->tk_status < 0) { | |
95baa25c | 3633 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
3634 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
3635 | return; | |
3636 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 3637 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
3638 | return; |
3639 | } | |
3640 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 3641 | } |
452e9352 | 3642 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3643 | } |
3644 | ||
963d8fe5 TM |
3645 | static const struct rpc_call_ops nfs4_renew_ops = { |
3646 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3647 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3648 | }; |
3649 | ||
2f60ea6b | 3650 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
3651 | { |
3652 | struct rpc_message msg = { | |
3653 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3654 | .rpc_argp = clp, | |
b4454fe1 | 3655 | .rpc_cred = cred, |
1da177e4 | 3656 | }; |
9bc4e3ca | 3657 | struct nfs4_renewdata *data; |
1da177e4 | 3658 | |
2f60ea6b TM |
3659 | if (renew_flags == 0) |
3660 | return 0; | |
0851de06 AB |
3661 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3662 | return -EIO; | |
b569ad34 | 3663 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
3664 | if (data == NULL) |
3665 | return -ENOMEM; | |
3666 | data->client = clp; | |
3667 | data->timestamp = jiffies; | |
1da177e4 | 3668 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, |
9bc4e3ca | 3669 | &nfs4_renew_ops, data); |
1da177e4 LT |
3670 | } |
3671 | ||
8534d4ec | 3672 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3673 | { |
3674 | struct rpc_message msg = { | |
3675 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3676 | .rpc_argp = clp, | |
b4454fe1 | 3677 | .rpc_cred = cred, |
1da177e4 LT |
3678 | }; |
3679 | unsigned long now = jiffies; | |
3680 | int status; | |
3681 | ||
3682 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3683 | if (status < 0) | |
3684 | return status; | |
452e9352 | 3685 | do_renew_lease(clp, now); |
1da177e4 LT |
3686 | return 0; |
3687 | } | |
3688 | ||
aa1870af BF |
3689 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3690 | { | |
3691 | return (server->caps & NFS_CAP_ACLS) | |
3692 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3693 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3694 | } | |
3695 | ||
21f498c2 TM |
3696 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that |
3697 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on | |
aa1870af BF |
3698 | * the stack. |
3699 | */ | |
21f498c2 | 3700 | #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) |
aa1870af | 3701 | |
e9e3d724 NH |
3702 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
3703 | struct page **pages, unsigned int *pgbase) | |
3704 | { | |
3705 | struct page *newpage, **spages; | |
3706 | int rc = 0; | |
3707 | size_t len; | |
3708 | spages = pages; | |
3709 | ||
3710 | do { | |
21f498c2 | 3711 | len = min_t(size_t, PAGE_SIZE, buflen); |
e9e3d724 NH |
3712 | newpage = alloc_page(GFP_KERNEL); |
3713 | ||
3714 | if (newpage == NULL) | |
3715 | goto unwind; | |
3716 | memcpy(page_address(newpage), buf, len); | |
3717 | buf += len; | |
3718 | buflen -= len; | |
3719 | *pages++ = newpage; | |
3720 | rc++; | |
3721 | } while (buflen != 0); | |
3722 | ||
3723 | return rc; | |
3724 | ||
3725 | unwind: | |
3726 | for(; rc > 0; rc--) | |
3727 | __free_page(spages[rc-1]); | |
3728 | return -ENOMEM; | |
3729 | } | |
3730 | ||
e50a1c2e BF |
3731 | struct nfs4_cached_acl { |
3732 | int cached; | |
3733 | size_t len; | |
3e9d4154 | 3734 | char data[0]; |
e50a1c2e BF |
3735 | }; |
3736 | ||
3737 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3738 | { | |
3739 | struct nfs_inode *nfsi = NFS_I(inode); | |
3740 | ||
3741 | spin_lock(&inode->i_lock); | |
3742 | kfree(nfsi->nfs4_acl); | |
3743 | nfsi->nfs4_acl = acl; | |
3744 | spin_unlock(&inode->i_lock); | |
3745 | } | |
3746 | ||
3747 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3748 | { | |
3749 | nfs4_set_cached_acl(inode, NULL); | |
3750 | } | |
3751 | ||
3752 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3753 | { | |
3754 | struct nfs_inode *nfsi = NFS_I(inode); | |
3755 | struct nfs4_cached_acl *acl; | |
3756 | int ret = -ENOENT; | |
3757 | ||
3758 | spin_lock(&inode->i_lock); | |
3759 | acl = nfsi->nfs4_acl; | |
3760 | if (acl == NULL) | |
3761 | goto out; | |
3762 | if (buf == NULL) /* user is just asking for length */ | |
3763 | goto out_len; | |
3764 | if (acl->cached == 0) | |
3765 | goto out; | |
3766 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3767 | if (acl->len > buflen) | |
3768 | goto out; | |
3769 | memcpy(buf, acl->data, acl->len); | |
3770 | out_len: | |
3771 | ret = acl->len; | |
3772 | out: | |
3773 | spin_unlock(&inode->i_lock); | |
3774 | return ret; | |
3775 | } | |
3776 | ||
5794d21e | 3777 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
3778 | { |
3779 | struct nfs4_cached_acl *acl; | |
b291f1b1 | 3780 | size_t buflen = sizeof(*acl) + acl_len; |
e50a1c2e | 3781 | |
1f1ea6c2 | 3782 | if (buflen <= PAGE_SIZE) { |
b291f1b1 | 3783 | acl = kmalloc(buflen, GFP_KERNEL); |
e50a1c2e BF |
3784 | if (acl == NULL) |
3785 | goto out; | |
3786 | acl->cached = 1; | |
5794d21e | 3787 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
3788 | } else { |
3789 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3790 | if (acl == NULL) | |
3791 | goto out; | |
3792 | acl->cached = 0; | |
3793 | } | |
3794 | acl->len = acl_len; | |
3795 | out: | |
3796 | nfs4_set_cached_acl(inode, acl); | |
3797 | } | |
3798 | ||
bf118a34 AA |
3799 | /* |
3800 | * The getxattr API returns the required buffer length when called with a | |
3801 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
3802 | * the required buf. On a NULL buf, we send a page of data to the server | |
3803 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
3804 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
3805 | * the cache. If not so, we throw away the page, and cache the required | |
3806 | * length. The next getxattr call will then produce another round trip to | |
3807 | * the server, this time with the input buf of the required size. | |
3808 | */ | |
16b4289c | 3809 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3810 | { |
bf118a34 | 3811 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
3812 | struct nfs_getaclargs args = { |
3813 | .fh = NFS_FH(inode), | |
3814 | .acl_pages = pages, | |
3815 | .acl_len = buflen, | |
3816 | }; | |
663c79b3 BH |
3817 | struct nfs_getaclres res = { |
3818 | .acl_len = buflen, | |
3819 | }; | |
aa1870af BF |
3820 | struct rpc_message msg = { |
3821 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3822 | .rpc_argp = &args, | |
663c79b3 | 3823 | .rpc_resp = &res, |
aa1870af | 3824 | }; |
21f498c2 TM |
3825 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
3826 | int ret = -ENOMEM, i; | |
aa1870af | 3827 | |
bf118a34 AA |
3828 | /* As long as we're doing a round trip to the server anyway, |
3829 | * let's be prepared for a page of acl data. */ | |
3830 | if (npages == 0) | |
3831 | npages = 1; | |
21f498c2 TM |
3832 | if (npages > ARRAY_SIZE(pages)) |
3833 | return -ERANGE; | |
5a006899 | 3834 | |
bf118a34 AA |
3835 | for (i = 0; i < npages; i++) { |
3836 | pages[i] = alloc_page(GFP_KERNEL); | |
3837 | if (!pages[i]) | |
3838 | goto out_free; | |
e50a1c2e | 3839 | } |
5a006899 SP |
3840 | |
3841 | /* for decoding across pages */ | |
3842 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
3843 | if (!res.acl_scratch) | |
3844 | goto out_free; | |
3845 | ||
bf118a34 AA |
3846 | args.acl_len = npages * PAGE_SIZE; |
3847 | args.acl_pgbase = 0; | |
5a006899 | 3848 | |
de040bec | 3849 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
3850 | __func__, buf, buflen, npages, args.acl_len); |
3851 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
3852 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
3853 | if (ret) |
3854 | goto out_free; | |
bf118a34 | 3855 | |
1f1ea6c2 TM |
3856 | /* Handle the case where the passed-in buffer is too short */ |
3857 | if (res.acl_flags & NFS4_ACL_TRUNC) { | |
3858 | /* Did the user only issue a request for the acl length? */ | |
3859 | if (buf == NULL) | |
3860 | goto out_ok; | |
e50a1c2e | 3861 | ret = -ERANGE; |
1f1ea6c2 | 3862 | goto out_free; |
e50a1c2e | 3863 | } |
1f1ea6c2 | 3864 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 SW |
3865 | if (buf) { |
3866 | if (res.acl_len > buflen) { | |
3867 | ret = -ERANGE; | |
3868 | goto out_free; | |
3869 | } | |
1f1ea6c2 | 3870 | _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 | 3871 | } |
1f1ea6c2 TM |
3872 | out_ok: |
3873 | ret = res.acl_len; | |
e50a1c2e | 3874 | out_free: |
bf118a34 AA |
3875 | for (i = 0; i < npages; i++) |
3876 | if (pages[i]) | |
3877 | __free_page(pages[i]); | |
331818f1 TM |
3878 | if (res.acl_scratch) |
3879 | __free_page(res.acl_scratch); | |
aa1870af BF |
3880 | return ret; |
3881 | } | |
3882 | ||
16b4289c TM |
3883 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
3884 | { | |
3885 | struct nfs4_exception exception = { }; | |
3886 | ssize_t ret; | |
3887 | do { | |
3888 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
3889 | if (ret >= 0) | |
3890 | break; | |
3891 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
3892 | } while (exception.retry); | |
3893 | return ret; | |
3894 | } | |
3895 | ||
e50a1c2e BF |
3896 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
3897 | { | |
3898 | struct nfs_server *server = NFS_SERVER(inode); | |
3899 | int ret; | |
3900 | ||
3901 | if (!nfs4_server_supports_acls(server)) | |
3902 | return -EOPNOTSUPP; | |
3903 | ret = nfs_revalidate_inode(server, inode); | |
3904 | if (ret < 0) | |
3905 | return ret; | |
08a22b39 AK |
3906 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
3907 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
3908 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
3909 | if (ret != -ENOENT) | |
bf118a34 AA |
3910 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
3911 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
3912 | return ret; |
3913 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
3914 | } | |
3915 | ||
16b4289c | 3916 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
3917 | { |
3918 | struct nfs_server *server = NFS_SERVER(inode); | |
3919 | struct page *pages[NFS4ACL_MAXPAGES]; | |
3920 | struct nfs_setaclargs arg = { | |
3921 | .fh = NFS_FH(inode), | |
3922 | .acl_pages = pages, | |
3923 | .acl_len = buflen, | |
3924 | }; | |
73c403a9 | 3925 | struct nfs_setaclres res; |
4b580ee3 BF |
3926 | struct rpc_message msg = { |
3927 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
3928 | .rpc_argp = &arg, | |
73c403a9 | 3929 | .rpc_resp = &res, |
4b580ee3 | 3930 | }; |
21f498c2 | 3931 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
e9e3d724 | 3932 | int ret, i; |
4b580ee3 BF |
3933 | |
3934 | if (!nfs4_server_supports_acls(server)) | |
3935 | return -EOPNOTSUPP; | |
21f498c2 TM |
3936 | if (npages > ARRAY_SIZE(pages)) |
3937 | return -ERANGE; | |
e9e3d724 NH |
3938 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
3939 | if (i < 0) | |
3940 | return i; | |
57ec14c5 | 3941 | nfs4_inode_return_delegation(inode); |
7c513058 | 3942 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
3943 | |
3944 | /* | |
3945 | * Free each page after tx, so the only ref left is | |
3946 | * held by the network stack | |
3947 | */ | |
3948 | for (; i > 0; i--) | |
3949 | put_page(pages[i-1]); | |
3950 | ||
08a22b39 AK |
3951 | /* |
3952 | * Acl update can result in inode attribute update. | |
3953 | * so mark the attribute cache invalid. | |
3954 | */ | |
3955 | spin_lock(&inode->i_lock); | |
3956 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
3957 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
3958 | nfs_access_zap_cache(inode); |
3959 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
3960 | return ret; |
3961 | } | |
3962 | ||
16b4289c TM |
3963 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
3964 | { | |
3965 | struct nfs4_exception exception = { }; | |
3966 | int err; | |
3967 | do { | |
3968 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3969 | __nfs4_proc_set_acl(inode, buf, buflen), | |
3970 | &exception); | |
3971 | } while (exception.retry); | |
3972 | return err; | |
3973 | } | |
3974 | ||
1da177e4 | 3975 | static int |
aa5190d0 | 3976 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 3977 | { |
aa5190d0 TM |
3978 | struct nfs_client *clp = server->nfs_client; |
3979 | ||
3980 | if (task->tk_status >= 0) | |
1da177e4 LT |
3981 | return 0; |
3982 | switch(task->tk_status) { | |
a1d0b5ee | 3983 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
3984 | case -NFS4ERR_ADMIN_REVOKED: |
3985 | case -NFS4ERR_BAD_STATEID: | |
14977489 TM |
3986 | if (state == NULL) |
3987 | break; | |
3988 | nfs_remove_bad_delegation(state->inode); | |
9e33bed5 TM |
3989 | case -NFS4ERR_OPENMODE: |
3990 | if (state == NULL) | |
3991 | break; | |
5d422301 TM |
3992 | if (nfs4_schedule_stateid_recovery(server, state) < 0) |
3993 | goto stateid_invalid; | |
0400a6b0 | 3994 | goto wait_on_recovery; |
0ced63d1 | 3995 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
3996 | if (state != NULL) { |
3997 | if (nfs4_schedule_stateid_recovery(server, state) < 0) | |
3998 | goto stateid_invalid; | |
3999 | } | |
1da177e4 | 4000 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 4001 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
4002 | nfs4_schedule_lease_recovery(clp); |
4003 | goto wait_on_recovery; | |
4745e315 AA |
4004 | #if defined(CONFIG_NFS_V4_1) |
4005 | case -NFS4ERR_BADSESSION: | |
4006 | case -NFS4ERR_BADSLOT: | |
4007 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4008 | case -NFS4ERR_DEADSESSION: | |
4009 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4010 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
4011 | case -NFS4ERR_SEQ_MISORDERED: | |
4012 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
4013 | task->tk_status); | |
9f594791 | 4014 | nfs4_schedule_session_recovery(clp->cl_session, task->tk_status); |
4745e315 AA |
4015 | task->tk_status = 0; |
4016 | return -EAGAIN; | |
4017 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 4018 | case -NFS4ERR_DELAY: |
aa5190d0 | 4019 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 4020 | case -NFS4ERR_GRACE: |
1da177e4 LT |
4021 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
4022 | task->tk_status = 0; | |
4023 | return -EAGAIN; | |
a8a4ae3a | 4024 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
4025 | case -NFS4ERR_OLD_STATEID: |
4026 | task->tk_status = 0; | |
4027 | return -EAGAIN; | |
4028 | } | |
4029 | task->tk_status = nfs4_map_errors(task->tk_status); | |
4030 | return 0; | |
5d422301 TM |
4031 | stateid_invalid: |
4032 | task->tk_status = -EIO; | |
4033 | return 0; | |
0400a6b0 | 4034 | wait_on_recovery: |
a2c0b9e2 | 4035 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
4036 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
4037 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
4038 | task->tk_status = 0; | |
4039 | return -EAGAIN; | |
1da177e4 LT |
4040 | } |
4041 | ||
f092075d CL |
4042 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
4043 | nfs4_verifier *bootverf) | |
cd93710e CL |
4044 | { |
4045 | __be32 verf[2]; | |
4046 | ||
2c820d9a CL |
4047 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
4048 | /* An impossible timestamp guarantees this value | |
4049 | * will never match a generated boot time. */ | |
4050 | verf[0] = 0; | |
4051 | verf[1] = (__be32)(NSEC_PER_SEC + 1); | |
4052 | } else { | |
f092075d CL |
4053 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
4054 | verf[0] = (__be32)nn->boot_time.tv_sec; | |
4055 | verf[1] = (__be32)nn->boot_time.tv_nsec; | |
2c820d9a | 4056 | } |
cd93710e CL |
4057 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
4058 | } | |
4059 | ||
e984a55a CL |
4060 | static unsigned int |
4061 | nfs4_init_nonuniform_client_string(const struct nfs_client *clp, | |
4062 | char *buf, size_t len) | |
4063 | { | |
4064 | unsigned int result; | |
4065 | ||
4066 | rcu_read_lock(); | |
4067 | result = scnprintf(buf, len, "Linux NFSv4.0 %s/%s %s", | |
4068 | clp->cl_ipaddr, | |
4069 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4070 | RPC_DISPLAY_ADDR), | |
4071 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4072 | RPC_DISPLAY_PROTO)); | |
4073 | rcu_read_unlock(); | |
4074 | return result; | |
4075 | } | |
4076 | ||
4077 | static unsigned int | |
4078 | nfs4_init_uniform_client_string(const struct nfs_client *clp, | |
4079 | char *buf, size_t len) | |
4080 | { | |
6f2ea7f2 CL |
4081 | char *nodename = clp->cl_rpcclient->cl_nodename; |
4082 | ||
4083 | if (nfs4_client_id_uniquifier[0] != '\0') | |
4084 | nodename = nfs4_client_id_uniquifier; | |
e984a55a CL |
4085 | return scnprintf(buf, len, "Linux NFSv%u.%u %s", |
4086 | clp->rpc_ops->version, clp->cl_minorversion, | |
6f2ea7f2 | 4087 | nodename); |
e984a55a CL |
4088 | } |
4089 | ||
6bbb4ae8 CL |
4090 | /** |
4091 | * nfs4_proc_setclientid - Negotiate client ID | |
4092 | * @clp: state data structure | |
4093 | * @program: RPC program for NFSv4 callback service | |
4094 | * @port: IP port number for NFS4 callback service | |
4095 | * @cred: RPC credential to use for this call | |
4096 | * @res: where to place the result | |
4097 | * | |
4098 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4099 | */ | |
bb8b27e5 TM |
4100 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
4101 | unsigned short port, struct rpc_cred *cred, | |
4102 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
4103 | { |
4104 | nfs4_verifier sc_verifier; | |
4105 | struct nfs4_setclientid setclientid = { | |
4106 | .sc_verifier = &sc_verifier, | |
4107 | .sc_prog = program, | |
f4eecd5d | 4108 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
4109 | }; |
4110 | struct rpc_message msg = { | |
4111 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
4112 | .rpc_argp = &setclientid, | |
bb8b27e5 | 4113 | .rpc_resp = res, |
286d7d6a | 4114 | .rpc_cred = cred, |
1da177e4 | 4115 | }; |
6bbb4ae8 | 4116 | int status; |
1da177e4 | 4117 | |
de734831 | 4118 | /* nfs_client_id4 */ |
f092075d | 4119 | nfs4_init_boot_verifier(clp, &sc_verifier); |
e984a55a CL |
4120 | if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags)) |
4121 | setclientid.sc_name_len = | |
4122 | nfs4_init_uniform_client_string(clp, | |
4123 | setclientid.sc_name, | |
4124 | sizeof(setclientid.sc_name)); | |
4125 | else | |
4126 | setclientid.sc_name_len = | |
4127 | nfs4_init_nonuniform_client_string(clp, | |
4128 | setclientid.sc_name, | |
4129 | sizeof(setclientid.sc_name)); | |
de734831 | 4130 | /* cb_client4 */ |
e984a55a | 4131 | rcu_read_lock(); |
de734831 | 4132 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, |
d4d3c507 CL |
4133 | sizeof(setclientid.sc_netid), |
4134 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4135 | RPC_DISPLAY_NETID)); | |
de734831 CL |
4136 | rcu_read_unlock(); |
4137 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, | |
d4d3c507 | 4138 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
4139 | clp->cl_ipaddr, port >> 8, port & 255); |
4140 | ||
6bbb4ae8 CL |
4141 | dprintk("NFS call setclientid auth=%s, '%.*s'\n", |
4142 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4143 | setclientid.sc_name_len, setclientid.sc_name); | |
4144 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
4145 | dprintk("NFS reply setclientid: %d\n", status); | |
4146 | return status; | |
1da177e4 LT |
4147 | } |
4148 | ||
6bbb4ae8 CL |
4149 | /** |
4150 | * nfs4_proc_setclientid_confirm - Confirm client ID | |
4151 | * @clp: state data structure | |
4152 | * @res: result of a previous SETCLIENTID | |
4153 | * @cred: RPC credential to use for this call | |
4154 | * | |
4155 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4156 | */ | |
fd954ae1 | 4157 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
4158 | struct nfs4_setclientid_res *arg, |
4159 | struct rpc_cred *cred) | |
1da177e4 LT |
4160 | { |
4161 | struct nfs_fsinfo fsinfo; | |
4162 | struct rpc_message msg = { | |
4163 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 4164 | .rpc_argp = arg, |
1da177e4 | 4165 | .rpc_resp = &fsinfo, |
286d7d6a | 4166 | .rpc_cred = cred, |
1da177e4 LT |
4167 | }; |
4168 | unsigned long now; | |
4169 | int status; | |
4170 | ||
6bbb4ae8 CL |
4171 | dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", |
4172 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4173 | clp->cl_clientid); | |
1da177e4 | 4174 | now = jiffies; |
1bd714f2 | 4175 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
4176 | if (status == 0) { |
4177 | spin_lock(&clp->cl_lock); | |
4178 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
4179 | clp->cl_last_renewal = now; | |
4180 | spin_unlock(&clp->cl_lock); | |
4181 | } | |
6bbb4ae8 | 4182 | dprintk("NFS reply setclientid_confirm: %d\n", status); |
1da177e4 LT |
4183 | return status; |
4184 | } | |
4185 | ||
fe650407 TM |
4186 | struct nfs4_delegreturndata { |
4187 | struct nfs4_delegreturnargs args; | |
fa178f29 | 4188 | struct nfs4_delegreturnres res; |
fe650407 TM |
4189 | struct nfs_fh fh; |
4190 | nfs4_stateid stateid; | |
26e976a8 | 4191 | unsigned long timestamp; |
fa178f29 | 4192 | struct nfs_fattr fattr; |
fe650407 TM |
4193 | int rpc_status; |
4194 | }; | |
4195 | ||
fe650407 TM |
4196 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
4197 | { | |
4198 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 4199 | |
14516c3a TM |
4200 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4201 | return; | |
938e1010 | 4202 | |
79708861 RL |
4203 | switch (task->tk_status) { |
4204 | case -NFS4ERR_STALE_STATEID: | |
4205 | case -NFS4ERR_EXPIRED: | |
4206 | case 0: | |
fa178f29 | 4207 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
4208 | break; |
4209 | default: | |
4210 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
4211 | -EAGAIN) { | |
d00c5d43 | 4212 | rpc_restart_call_prepare(task); |
79708861 RL |
4213 | return; |
4214 | } | |
4215 | } | |
4216 | data->rpc_status = task->tk_status; | |
fe650407 TM |
4217 | } |
4218 | ||
4219 | static void nfs4_delegreturn_release(void *calldata) | |
4220 | { | |
fe650407 TM |
4221 | kfree(calldata); |
4222 | } | |
4223 | ||
938e1010 AA |
4224 | #if defined(CONFIG_NFS_V4_1) |
4225 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
4226 | { | |
4227 | struct nfs4_delegreturndata *d_data; | |
4228 | ||
4229 | d_data = (struct nfs4_delegreturndata *)data; | |
4230 | ||
d9afbd1b TM |
4231 | nfs4_setup_sequence(d_data->res.server, |
4232 | &d_data->args.seq_args, | |
4233 | &d_data->res.seq_res, | |
4234 | task); | |
938e1010 AA |
4235 | } |
4236 | #endif /* CONFIG_NFS_V4_1 */ | |
4237 | ||
c8d149f3 | 4238 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
4239 | #if defined(CONFIG_NFS_V4_1) |
4240 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
4241 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
4242 | .rpc_call_done = nfs4_delegreturn_done, |
4243 | .rpc_release = nfs4_delegreturn_release, | |
4244 | }; | |
4245 | ||
e6f81075 | 4246 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
4247 | { |
4248 | struct nfs4_delegreturndata *data; | |
fa178f29 | 4249 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 4250 | struct rpc_task *task; |
5138fde0 TM |
4251 | struct rpc_message msg = { |
4252 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
4253 | .rpc_cred = cred, | |
4254 | }; | |
c970aa85 TM |
4255 | struct rpc_task_setup task_setup_data = { |
4256 | .rpc_client = server->client, | |
5138fde0 | 4257 | .rpc_message = &msg, |
c970aa85 TM |
4258 | .callback_ops = &nfs4_delegreturn_ops, |
4259 | .flags = RPC_TASK_ASYNC, | |
4260 | }; | |
e6f81075 | 4261 | int status = 0; |
fe650407 | 4262 | |
8535b2be | 4263 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
4264 | if (data == NULL) |
4265 | return -ENOMEM; | |
9d12b216 | 4266 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
4267 | data->args.fhandle = &data->fh; |
4268 | data->args.stateid = &data->stateid; | |
9e907fec | 4269 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 4270 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 4271 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
4272 | data->res.fattr = &data->fattr; |
4273 | data->res.server = server; | |
5138fde0 | 4274 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 4275 | data->timestamp = jiffies; |
fe650407 TM |
4276 | data->rpc_status = 0; |
4277 | ||
c970aa85 | 4278 | task_setup_data.callback_data = data; |
1174dd1f TM |
4279 | msg.rpc_argp = &data->args; |
4280 | msg.rpc_resp = &data->res; | |
c970aa85 | 4281 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 4282 | if (IS_ERR(task)) |
fe650407 | 4283 | return PTR_ERR(task); |
e6f81075 TM |
4284 | if (!issync) |
4285 | goto out; | |
fe650407 | 4286 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
4287 | if (status != 0) |
4288 | goto out; | |
4289 | status = data->rpc_status; | |
e144cbcc TM |
4290 | if (status == 0) |
4291 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
4292 | else | |
4293 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 4294 | out: |
e6b3c4db | 4295 | rpc_put_task(task); |
fe650407 | 4296 | return status; |
1da177e4 LT |
4297 | } |
4298 | ||
e6f81075 | 4299 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
4300 | { |
4301 | struct nfs_server *server = NFS_SERVER(inode); | |
4302 | struct nfs4_exception exception = { }; | |
4303 | int err; | |
4304 | do { | |
e6f81075 | 4305 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
4306 | switch (err) { |
4307 | case -NFS4ERR_STALE_STATEID: | |
4308 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
4309 | case 0: |
4310 | return 0; | |
4311 | } | |
4312 | err = nfs4_handle_exception(server, err, &exception); | |
4313 | } while (exception.retry); | |
4314 | return err; | |
4315 | } | |
4316 | ||
4317 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
4318 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
4319 | ||
4320 | /* | |
4321 | * sleep, with exponential backoff, and retry the LOCK operation. | |
4322 | */ | |
4323 | static unsigned long | |
4324 | nfs4_set_lock_task_retry(unsigned long timeout) | |
4325 | { | |
d310310c | 4326 | freezable_schedule_timeout_killable(timeout); |
1da177e4 LT |
4327 | timeout <<= 1; |
4328 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
4329 | return NFS4_LOCK_MAXTIMEOUT; | |
4330 | return timeout; | |
4331 | } | |
4332 | ||
1da177e4 LT |
4333 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4334 | { | |
4335 | struct inode *inode = state->inode; | |
4336 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 4337 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 4338 | struct nfs_lockt_args arg = { |
1da177e4 | 4339 | .fh = NFS_FH(inode), |
911d1aaf | 4340 | .fl = request, |
1da177e4 | 4341 | }; |
911d1aaf TM |
4342 | struct nfs_lockt_res res = { |
4343 | .denied = request, | |
1da177e4 LT |
4344 | }; |
4345 | struct rpc_message msg = { | |
4346 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
4347 | .rpc_argp = &arg, | |
4348 | .rpc_resp = &res, | |
4349 | .rpc_cred = state->owner->so_cred, | |
4350 | }; | |
1da177e4 LT |
4351 | struct nfs4_lock_state *lsp; |
4352 | int status; | |
4353 | ||
911d1aaf | 4354 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
4355 | status = nfs4_set_lock_state(state, request); |
4356 | if (status != 0) | |
4357 | goto out; | |
4358 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 4359 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4360 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 4361 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
4362 | switch (status) { |
4363 | case 0: | |
4364 | request->fl_type = F_UNLCK; | |
4365 | break; | |
4366 | case -NFS4ERR_DENIED: | |
4367 | status = 0; | |
1da177e4 | 4368 | } |
70cc6487 | 4369 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 4370 | out: |
1da177e4 LT |
4371 | return status; |
4372 | } | |
4373 | ||
4374 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4375 | { | |
4376 | struct nfs4_exception exception = { }; | |
4377 | int err; | |
4378 | ||
4379 | do { | |
4380 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
4381 | _nfs4_proc_getlk(state, cmd, request), | |
4382 | &exception); | |
4383 | } while (exception.retry); | |
4384 | return err; | |
4385 | } | |
4386 | ||
4387 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
4388 | { | |
4389 | int res = 0; | |
4390 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
4391 | case FL_POSIX: | |
4392 | res = posix_lock_file_wait(file, fl); | |
4393 | break; | |
4394 | case FL_FLOCK: | |
4395 | res = flock_lock_file_wait(file, fl); | |
4396 | break; | |
4397 | default: | |
4398 | BUG(); | |
4399 | } | |
1da177e4 LT |
4400 | return res; |
4401 | } | |
4402 | ||
faf5f49c | 4403 | struct nfs4_unlockdata { |
911d1aaf TM |
4404 | struct nfs_locku_args arg; |
4405 | struct nfs_locku_res res; | |
faf5f49c TM |
4406 | struct nfs4_lock_state *lsp; |
4407 | struct nfs_open_context *ctx; | |
911d1aaf TM |
4408 | struct file_lock fl; |
4409 | const struct nfs_server *server; | |
26e976a8 | 4410 | unsigned long timestamp; |
faf5f49c TM |
4411 | }; |
4412 | ||
911d1aaf TM |
4413 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
4414 | struct nfs_open_context *ctx, | |
4415 | struct nfs4_lock_state *lsp, | |
4416 | struct nfs_seqid *seqid) | |
4417 | { | |
4418 | struct nfs4_unlockdata *p; | |
4419 | struct inode *inode = lsp->ls_state->inode; | |
4420 | ||
8535b2be | 4421 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
4422 | if (p == NULL) |
4423 | return NULL; | |
4424 | p->arg.fh = NFS_FH(inode); | |
4425 | p->arg.fl = &p->fl; | |
4426 | p->arg.seqid = seqid; | |
c1d51931 | 4427 | p->res.seqid = seqid; |
911d1aaf TM |
4428 | p->arg.stateid = &lsp->ls_stateid; |
4429 | p->lsp = lsp; | |
4430 | atomic_inc(&lsp->ls_count); | |
4431 | /* Ensure we don't close file until we're done freeing locks! */ | |
4432 | p->ctx = get_nfs_open_context(ctx); | |
4433 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4434 | p->server = NFS_SERVER(inode); | |
4435 | return p; | |
4436 | } | |
4437 | ||
06f814a3 | 4438 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 4439 | { |
963d8fe5 | 4440 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 4441 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
4442 | nfs4_put_lock_state(calldata->lsp); |
4443 | put_nfs_open_context(calldata->ctx); | |
4444 | kfree(calldata); | |
faf5f49c TM |
4445 | } |
4446 | ||
963d8fe5 | 4447 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 4448 | { |
963d8fe5 | 4449 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4450 | |
14516c3a TM |
4451 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
4452 | return; | |
faf5f49c TM |
4453 | switch (task->tk_status) { |
4454 | case 0: | |
f597c537 TM |
4455 | nfs4_stateid_copy(&calldata->lsp->ls_stateid, |
4456 | &calldata->res.stateid); | |
26e976a8 | 4457 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 4458 | break; |
9e33bed5 TM |
4459 | case -NFS4ERR_BAD_STATEID: |
4460 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
4461 | case -NFS4ERR_STALE_STATEID: |
4462 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
4463 | break; |
4464 | default: | |
9e33bed5 | 4465 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
d00c5d43 | 4466 | rpc_restart_call_prepare(task); |
faf5f49c | 4467 | } |
2b1bc308 | 4468 | nfs_release_seqid(calldata->arg.seqid); |
faf5f49c TM |
4469 | } |
4470 | ||
4ce70ada | 4471 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 4472 | { |
4ce70ada | 4473 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4474 | |
911d1aaf | 4475 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 4476 | goto out_wait; |
795a88c9 | 4477 | if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) { |
963d8fe5 | 4478 | /* Note: exit _without_ running nfs4_locku_done */ |
c8da19b9 | 4479 | goto out_no_action; |
faf5f49c | 4480 | } |
26e976a8 | 4481 | calldata->timestamp = jiffies; |
035168ab | 4482 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 4483 | &calldata->arg.seq_args, |
2240a9e2 TM |
4484 | &calldata->res.seq_res, |
4485 | task) != 0) | |
4486 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 TM |
4487 | return; |
4488 | out_no_action: | |
4489 | task->tk_action = NULL; | |
4490 | out_wait: | |
4491 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
faf5f49c TM |
4492 | } |
4493 | ||
963d8fe5 | 4494 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 4495 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 4496 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 4497 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
4498 | }; |
4499 | ||
a5d16a4d TM |
4500 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
4501 | struct nfs_open_context *ctx, | |
4502 | struct nfs4_lock_state *lsp, | |
4503 | struct nfs_seqid *seqid) | |
4504 | { | |
4505 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
4506 | struct rpc_message msg = { |
4507 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
4508 | .rpc_cred = ctx->cred, | |
4509 | }; | |
c970aa85 TM |
4510 | struct rpc_task_setup task_setup_data = { |
4511 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 4512 | .rpc_message = &msg, |
c970aa85 | 4513 | .callback_ops = &nfs4_locku_ops, |
101070ca | 4514 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4515 | .flags = RPC_TASK_ASYNC, |
4516 | }; | |
a5d16a4d | 4517 | |
137d6aca FF |
4518 | /* Ensure this is an unlock - when canceling a lock, the |
4519 | * canceled lock is passed in, and it won't be an unlock. | |
4520 | */ | |
4521 | fl->fl_type = F_UNLCK; | |
4522 | ||
a5d16a4d TM |
4523 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
4524 | if (data == NULL) { | |
4525 | nfs_free_seqid(seqid); | |
4526 | return ERR_PTR(-ENOMEM); | |
4527 | } | |
4528 | ||
9d12b216 | 4529 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4530 | msg.rpc_argp = &data->arg; |
4531 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4532 | task_setup_data.callback_data = data; |
4533 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
4534 | } |
4535 | ||
faf5f49c TM |
4536 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
4537 | { | |
65b62a29 TM |
4538 | struct inode *inode = state->inode; |
4539 | struct nfs4_state_owner *sp = state->owner; | |
4540 | struct nfs_inode *nfsi = NFS_I(inode); | |
911d1aaf | 4541 | struct nfs_seqid *seqid; |
1da177e4 | 4542 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
4543 | struct rpc_task *task; |
4544 | int status = 0; | |
536ff0f8 | 4545 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 4546 | |
8d0a8a9d | 4547 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
4548 | /* Unlock _before_ we do the RPC call */ |
4549 | request->fl_flags |= FL_EXISTS; | |
65b62a29 TM |
4550 | /* Exclude nfs_delegation_claim_locks() */ |
4551 | mutex_lock(&sp->so_delegreturn_mutex); | |
4552 | /* Exclude nfs4_reclaim_open_stateid() - note nesting! */ | |
19e03c57 TM |
4553 | down_read(&nfsi->rwsem); |
4554 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
4555 | up_read(&nfsi->rwsem); | |
65b62a29 | 4556 | mutex_unlock(&sp->so_delegreturn_mutex); |
9b073574 | 4557 | goto out; |
19e03c57 TM |
4558 | } |
4559 | up_read(&nfsi->rwsem); | |
65b62a29 | 4560 | mutex_unlock(&sp->so_delegreturn_mutex); |
8d0a8a9d | 4561 | if (status != 0) |
9b073574 TM |
4562 | goto out; |
4563 | /* Is this a delegated lock? */ | |
4564 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
4565 | goto out; | |
8d0a8a9d | 4566 | lsp = request->fl_u.nfs4_fl.owner; |
8535b2be | 4567 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 4568 | status = -ENOMEM; |
911d1aaf | 4569 | if (seqid == NULL) |
9b073574 | 4570 | goto out; |
cd3758e3 | 4571 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
4572 | status = PTR_ERR(task); |
4573 | if (IS_ERR(task)) | |
9b073574 | 4574 | goto out; |
a5d16a4d | 4575 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 4576 | rpc_put_task(task); |
9b073574 | 4577 | out: |
536ff0f8 | 4578 | request->fl_flags = fl_flags; |
1da177e4 LT |
4579 | return status; |
4580 | } | |
4581 | ||
a5d16a4d TM |
4582 | struct nfs4_lockdata { |
4583 | struct nfs_lock_args arg; | |
4584 | struct nfs_lock_res res; | |
4585 | struct nfs4_lock_state *lsp; | |
4586 | struct nfs_open_context *ctx; | |
4587 | struct file_lock fl; | |
26e976a8 | 4588 | unsigned long timestamp; |
a5d16a4d TM |
4589 | int rpc_status; |
4590 | int cancelled; | |
66179efe | 4591 | struct nfs_server *server; |
a5d16a4d TM |
4592 | }; |
4593 | ||
4594 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
4595 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
4596 | gfp_t gfp_mask) | |
1da177e4 | 4597 | { |
a5d16a4d TM |
4598 | struct nfs4_lockdata *p; |
4599 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 4600 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 4601 | |
8535b2be | 4602 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
4603 | if (p == NULL) |
4604 | return NULL; | |
4605 | ||
4606 | p->arg.fh = NFS_FH(inode); | |
4607 | p->arg.fl = &p->fl; | |
8535b2be | 4608 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4609 | if (p->arg.open_seqid == NULL) |
4610 | goto out_free; | |
8535b2be | 4611 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4612 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4613 | goto out_free_seqid; |
a5d16a4d | 4614 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4615 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 4616 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4617 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 4618 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4619 | p->lsp = lsp; |
66179efe | 4620 | p->server = server; |
a5d16a4d TM |
4621 | atomic_inc(&lsp->ls_count); |
4622 | p->ctx = get_nfs_open_context(ctx); | |
4623 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4624 | return p; | |
2f74c0a0 TM |
4625 | out_free_seqid: |
4626 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4627 | out_free: |
4628 | kfree(p); | |
4629 | return NULL; | |
4630 | } | |
4631 | ||
4632 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4633 | { | |
4634 | struct nfs4_lockdata *data = calldata; | |
4635 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4636 | |
3110ff80 | 4637 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4638 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
c8da19b9 | 4639 | goto out_wait; |
a5d16a4d TM |
4640 | /* Do we need to do an open_to_lock_owner? */ |
4641 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
8fe72bac | 4642 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) { |
2240a9e2 | 4643 | goto out_release_lock_seqid; |
8fe72bac | 4644 | } |
a5d16a4d TM |
4645 | data->arg.open_stateid = &state->stateid; |
4646 | data->arg.new_lock_owner = 1; | |
c1d51931 | 4647 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4648 | } else |
4649 | data->arg.new_lock_owner = 0; | |
5d422301 TM |
4650 | if (!nfs4_valid_open_stateid(state)) { |
4651 | data->rpc_status = -EBADF; | |
4652 | task->tk_action = NULL; | |
4653 | goto out_release_open_seqid; | |
4654 | } | |
26e976a8 | 4655 | data->timestamp = jiffies; |
035168ab TM |
4656 | if (nfs4_setup_sequence(data->server, |
4657 | &data->arg.seq_args, | |
2240a9e2 | 4658 | &data->res.seq_res, |
d9afbd1b | 4659 | task) == 0) |
66179efe | 4660 | return; |
5d422301 | 4661 | out_release_open_seqid: |
2240a9e2 TM |
4662 | nfs_release_seqid(data->arg.open_seqid); |
4663 | out_release_lock_seqid: | |
4664 | nfs_release_seqid(data->arg.lock_seqid); | |
c8da19b9 TM |
4665 | out_wait: |
4666 | nfs4_sequence_done(task, &data->res.seq_res); | |
8fe72bac | 4667 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
b257957e AB |
4668 | } |
4669 | ||
a5d16a4d TM |
4670 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4671 | { | |
4672 | struct nfs4_lockdata *data = calldata; | |
4673 | ||
3110ff80 | 4674 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4675 | |
14516c3a TM |
4676 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4677 | return; | |
66179efe | 4678 | |
a5d16a4d | 4679 | data->rpc_status = task->tk_status; |
a5d16a4d | 4680 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4681 | if (data->rpc_status == 0) |
4682 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4683 | else | |
4684 | goto out; | |
4685 | } | |
4686 | if (data->rpc_status == 0) { | |
f597c537 | 4687 | nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid); |
795a88c9 | 4688 | set_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags); |
3d4ff43d | 4689 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 4690 | } |
a5d16a4d | 4691 | out: |
3110ff80 | 4692 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4693 | } |
4694 | ||
4695 | static void nfs4_lock_release(void *calldata) | |
4696 | { | |
4697 | struct nfs4_lockdata *data = calldata; | |
4698 | ||
3110ff80 | 4699 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4700 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4701 | if (data->cancelled != 0) { |
4702 | struct rpc_task *task; | |
4703 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4704 | data->arg.lock_seqid); | |
4705 | if (!IS_ERR(task)) | |
bf294b41 | 4706 | rpc_put_task_async(task); |
3110ff80 | 4707 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4708 | } else |
4709 | nfs_free_seqid(data->arg.lock_seqid); | |
4710 | nfs4_put_lock_state(data->lsp); | |
4711 | put_nfs_open_context(data->ctx); | |
4712 | kfree(data); | |
3110ff80 | 4713 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4714 | } |
4715 | ||
4716 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4717 | .rpc_call_prepare = nfs4_lock_prepare, | |
4718 | .rpc_call_done = nfs4_lock_done, | |
4719 | .rpc_release = nfs4_lock_release, | |
4720 | }; | |
4721 | ||
2bee72a6 TM |
4722 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4723 | { | |
2bee72a6 TM |
4724 | switch (error) { |
4725 | case -NFS4ERR_ADMIN_REVOKED: | |
4726 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 4727 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 | 4728 | if (new_lock_owner != 0 || |
795a88c9 | 4729 | test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0) |
ecac799a | 4730 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
4731 | break; |
4732 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 4733 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
4734 | case -NFS4ERR_EXPIRED: |
4735 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
4736 | }; |
4737 | } | |
4738 | ||
afe6c27c | 4739 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4740 | { |
4741 | struct nfs4_lockdata *data; | |
4742 | struct rpc_task *task; | |
5138fde0 TM |
4743 | struct rpc_message msg = { |
4744 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4745 | .rpc_cred = state->owner->so_cred, | |
4746 | }; | |
c970aa85 TM |
4747 | struct rpc_task_setup task_setup_data = { |
4748 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4749 | .rpc_message = &msg, |
c970aa85 | 4750 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4751 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4752 | .flags = RPC_TASK_ASYNC, |
4753 | }; | |
a5d16a4d TM |
4754 | int ret; |
4755 | ||
3110ff80 | 4756 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4757 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4758 | fl->fl_u.nfs4_fl.owner, |
4759 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4760 | if (data == NULL) |
4761 | return -ENOMEM; | |
4762 | if (IS_SETLKW(cmd)) | |
4763 | data->arg.block = 1; | |
9d12b216 | 4764 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4765 | msg.rpc_argp = &data->arg; |
4766 | msg.rpc_resp = &data->res; | |
c970aa85 | 4767 | task_setup_data.callback_data = data; |
8fe72bac TM |
4768 | if (recovery_type > NFS_LOCK_NEW) { |
4769 | if (recovery_type == NFS_LOCK_RECLAIM) | |
4770 | data->arg.reclaim = NFS_LOCK_RECLAIM; | |
4771 | nfs4_set_sequence_privileged(&data->arg.seq_args); | |
4772 | } | |
c970aa85 | 4773 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 4774 | if (IS_ERR(task)) |
a5d16a4d | 4775 | return PTR_ERR(task); |
a5d16a4d TM |
4776 | ret = nfs4_wait_for_completion_rpc_task(task); |
4777 | if (ret == 0) { | |
4778 | ret = data->rpc_status; | |
2bee72a6 TM |
4779 | if (ret) |
4780 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4781 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4782 | } else |
4783 | data->cancelled = 1; | |
e6b3c4db | 4784 | rpc_put_task(task); |
3110ff80 | 4785 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4786 | return ret; |
1da177e4 LT |
4787 | } |
4788 | ||
4789 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4790 | { | |
202b50dc | 4791 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4792 | struct nfs4_exception exception = { |
4793 | .inode = state->inode, | |
4794 | }; | |
202b50dc TM |
4795 | int err; |
4796 | ||
4797 | do { | |
42a2d13e TM |
4798 | /* Cache the lock if possible... */ |
4799 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4800 | return 0; | |
afe6c27c | 4801 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 4802 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
4803 | break; |
4804 | nfs4_handle_exception(server, err, &exception); | |
4805 | } while (exception.retry); | |
4806 | return err; | |
1da177e4 LT |
4807 | } |
4808 | ||
4809 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4810 | { | |
202b50dc | 4811 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4812 | struct nfs4_exception exception = { |
4813 | .inode = state->inode, | |
4814 | }; | |
202b50dc TM |
4815 | int err; |
4816 | ||
6bfc93ef TM |
4817 | err = nfs4_set_lock_state(state, request); |
4818 | if (err != 0) | |
4819 | return err; | |
202b50dc | 4820 | do { |
42a2d13e TM |
4821 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4822 | return 0; | |
afe6c27c | 4823 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
4824 | switch (err) { |
4825 | default: | |
4826 | goto out; | |
4827 | case -NFS4ERR_GRACE: | |
4828 | case -NFS4ERR_DELAY: | |
4829 | nfs4_handle_exception(server, err, &exception); | |
4830 | err = 0; | |
4831 | } | |
202b50dc | 4832 | } while (exception.retry); |
a9ed2e25 | 4833 | out: |
202b50dc | 4834 | return err; |
1da177e4 LT |
4835 | } |
4836 | ||
f062eb6c | 4837 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd CL |
4838 | /** |
4839 | * nfs41_check_expired_locks - possibly free a lock stateid | |
4840 | * | |
4841 | * @state: NFSv4 state for an inode | |
4842 | * | |
4843 | * Returns NFS_OK if recovery for this stateid is now finished. | |
4844 | * Otherwise a negative NFS4ERR value is returned. | |
4845 | */ | |
b01dd1d8 | 4846 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 4847 | { |
eb64cf96 | 4848 | int status, ret = -NFS4ERR_BAD_STATEID; |
b01dd1d8 | 4849 | struct nfs4_lock_state *lsp; |
f062eb6c BS |
4850 | struct nfs_server *server = NFS_SERVER(state->inode); |
4851 | ||
b01dd1d8 | 4852 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
795a88c9 | 4853 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { |
b01dd1d8 BS |
4854 | status = nfs41_test_stateid(server, &lsp->ls_stateid); |
4855 | if (status != NFS_OK) { | |
3e60ffdd CL |
4856 | /* Free the stateid unless the server |
4857 | * informs us the stateid is unrecognized. */ | |
89af2739 CL |
4858 | if (status != -NFS4ERR_BAD_STATEID) |
4859 | nfs41_free_stateid(server, | |
4860 | &lsp->ls_stateid); | |
795a88c9 | 4861 | clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); |
b01dd1d8 BS |
4862 | ret = status; |
4863 | } | |
4864 | } | |
4865 | }; | |
4866 | ||
4867 | return ret; | |
4868 | } | |
4869 | ||
4870 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4871 | { | |
4872 | int status = NFS_OK; | |
4873 | ||
4874 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
4875 | status = nfs41_check_expired_locks(state); | |
eb64cf96 CL |
4876 | if (status != NFS_OK) |
4877 | status = nfs4_lock_expired(state, request); | |
4878 | return status; | |
f062eb6c BS |
4879 | } |
4880 | #endif | |
4881 | ||
1da177e4 LT |
4882 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4883 | { | |
9a99af49 | 4884 | struct nfs4_state_owner *sp = state->owner; |
19e03c57 | 4885 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 4886 | unsigned char fl_flags = request->fl_flags; |
9a99af49 | 4887 | unsigned int seq; |
8e469ebd | 4888 | int status = -ENOLCK; |
1da177e4 | 4889 | |
8e469ebd TM |
4890 | if ((fl_flags & FL_POSIX) && |
4891 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
4892 | goto out; | |
6bfc93ef | 4893 | /* Is this a delegated open? */ |
6bfc93ef TM |
4894 | status = nfs4_set_lock_state(state, request); |
4895 | if (status != 0) | |
4896 | goto out; | |
01c3b861 TM |
4897 | request->fl_flags |= FL_ACCESS; |
4898 | status = do_vfs_lock(request->fl_file, request); | |
4899 | if (status < 0) | |
4900 | goto out; | |
19e03c57 | 4901 | down_read(&nfsi->rwsem); |
01c3b861 | 4902 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 4903 | /* Yes: cache locks! */ |
01c3b861 | 4904 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
4905 | request->fl_flags = fl_flags & ~FL_SLEEP; |
4906 | status = do_vfs_lock(request->fl_file, request); | |
4907 | goto out_unlock; | |
01c3b861 | 4908 | } |
9a99af49 TM |
4909 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); |
4910 | up_read(&nfsi->rwsem); | |
afe6c27c | 4911 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 4912 | if (status != 0) |
9a99af49 TM |
4913 | goto out; |
4914 | down_read(&nfsi->rwsem); | |
4915 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) { | |
4916 | status = -NFS4ERR_DELAY; | |
01c3b861 | 4917 | goto out_unlock; |
9a99af49 | 4918 | } |
6bfc93ef | 4919 | /* Note: we always want to sleep here! */ |
01c3b861 | 4920 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 4921 | if (do_vfs_lock(request->fl_file, request) < 0) |
a030889a WAA |
4922 | printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " |
4923 | "manager!\n", __func__); | |
01c3b861 | 4924 | out_unlock: |
19e03c57 | 4925 | up_read(&nfsi->rwsem); |
01c3b861 TM |
4926 | out: |
4927 | request->fl_flags = fl_flags; | |
1da177e4 LT |
4928 | return status; |
4929 | } | |
4930 | ||
4931 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4932 | { | |
a1d0b5ee TM |
4933 | struct nfs4_exception exception = { |
4934 | .state = state, | |
05ffe24f | 4935 | .inode = state->inode, |
a1d0b5ee | 4936 | }; |
1da177e4 LT |
4937 | int err; |
4938 | ||
4939 | do { | |
965b5d67 TM |
4940 | err = _nfs4_proc_setlk(state, cmd, request); |
4941 | if (err == -NFS4ERR_DENIED) | |
4942 | err = -EAGAIN; | |
1da177e4 | 4943 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 4944 | err, &exception); |
1da177e4 LT |
4945 | } while (exception.retry); |
4946 | return err; | |
4947 | } | |
4948 | ||
4949 | static int | |
4950 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
4951 | { | |
4952 | struct nfs_open_context *ctx; | |
4953 | struct nfs4_state *state; | |
4954 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
4955 | int status; | |
4956 | ||
4957 | /* verify open state */ | |
cd3758e3 | 4958 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
4959 | state = ctx->state; |
4960 | ||
4961 | if (request->fl_start < 0 || request->fl_end < 0) | |
4962 | return -EINVAL; | |
4963 | ||
d953126a TM |
4964 | if (IS_GETLK(cmd)) { |
4965 | if (state != NULL) | |
4966 | return nfs4_proc_getlk(state, F_GETLK, request); | |
4967 | return 0; | |
4968 | } | |
1da177e4 LT |
4969 | |
4970 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
4971 | return -EINVAL; | |
4972 | ||
d953126a TM |
4973 | if (request->fl_type == F_UNLCK) { |
4974 | if (state != NULL) | |
4975 | return nfs4_proc_unlck(state, cmd, request); | |
4976 | return 0; | |
4977 | } | |
1da177e4 | 4978 | |
d953126a TM |
4979 | if (state == NULL) |
4980 | return -ENOLCK; | |
55725513 TM |
4981 | /* |
4982 | * Don't rely on the VFS having checked the file open mode, | |
4983 | * since it won't do this for flock() locks. | |
4984 | */ | |
f44106e2 | 4985 | switch (request->fl_type) { |
55725513 TM |
4986 | case F_RDLCK: |
4987 | if (!(filp->f_mode & FMODE_READ)) | |
4988 | return -EBADF; | |
4989 | break; | |
4990 | case F_WRLCK: | |
4991 | if (!(filp->f_mode & FMODE_WRITE)) | |
4992 | return -EBADF; | |
4993 | } | |
4994 | ||
1da177e4 LT |
4995 | do { |
4996 | status = nfs4_proc_setlk(state, cmd, request); | |
4997 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
4998 | break; | |
4999 | timeout = nfs4_set_lock_task_retry(timeout); | |
5000 | status = -ERESTARTSYS; | |
5001 | if (signalled()) | |
5002 | break; | |
5003 | } while(status < 0); | |
1da177e4 LT |
5004 | return status; |
5005 | } | |
5006 | ||
888e694c TM |
5007 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
5008 | { | |
5009 | struct nfs_server *server = NFS_SERVER(state->inode); | |
5010 | struct nfs4_exception exception = { }; | |
5011 | int err; | |
5012 | ||
5013 | err = nfs4_set_lock_state(state, fl); | |
5014 | if (err != 0) | |
5015 | goto out; | |
5016 | do { | |
afe6c27c | 5017 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
d5122201 TM |
5018 | switch (err) { |
5019 | default: | |
a030889a WAA |
5020 | printk(KERN_ERR "NFS: %s: unhandled error " |
5021 | "%d.\n", __func__, err); | |
d5122201 | 5022 | case 0: |
965b5d67 | 5023 | case -ESTALE: |
d5122201 | 5024 | goto out; |
d5122201 | 5025 | case -NFS4ERR_STALE_CLIENTID: |
965b5d67 | 5026 | case -NFS4ERR_STALE_STATEID: |
37380e42 TM |
5027 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
5028 | case -NFS4ERR_EXPIRED: | |
0400a6b0 | 5029 | nfs4_schedule_lease_recovery(server->nfs_client); |
37380e42 | 5030 | err = -EAGAIN; |
0400a6b0 | 5031 | goto out; |
74e7bb73 RL |
5032 | case -NFS4ERR_BADSESSION: |
5033 | case -NFS4ERR_BADSLOT: | |
5034 | case -NFS4ERR_BAD_HIGH_SLOT: | |
5035 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
5036 | case -NFS4ERR_DEADSESSION: | |
37380e42 | 5037 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
9f594791 | 5038 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); |
37380e42 | 5039 | err = -EAGAIN; |
d5122201 | 5040 | goto out; |
a1d0b5ee | 5041 | case -NFS4ERR_DELEG_REVOKED: |
965b5d67 TM |
5042 | case -NFS4ERR_ADMIN_REVOKED: |
5043 | case -NFS4ERR_BAD_STATEID: | |
5044 | case -NFS4ERR_OPENMODE: | |
0400a6b0 | 5045 | nfs4_schedule_stateid_recovery(server, state); |
965b5d67 TM |
5046 | err = 0; |
5047 | goto out; | |
5048 | case -ENOMEM: | |
5049 | case -NFS4ERR_DENIED: | |
5050 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
5051 | err = 0; | |
5052 | goto out; | |
d5122201 | 5053 | } |
37380e42 | 5054 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
888e694c TM |
5055 | err = nfs4_handle_exception(server, err, &exception); |
5056 | } while (exception.retry); | |
5057 | out: | |
5058 | return err; | |
5059 | } | |
6b3b5496 | 5060 | |
cf470c3e TM |
5061 | struct nfs_release_lockowner_data { |
5062 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 5063 | struct nfs_server *server; |
cf470c3e TM |
5064 | struct nfs_release_lockowner_args args; |
5065 | }; | |
5066 | ||
d3c7b7cc TM |
5067 | static void nfs4_release_lockowner_release(void *calldata) |
5068 | { | |
cf470c3e | 5069 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 5070 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
5071 | kfree(calldata); |
5072 | } | |
5073 | ||
17280175 | 5074 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
d3c7b7cc TM |
5075 | .rpc_release = nfs4_release_lockowner_release, |
5076 | }; | |
5077 | ||
cf470c3e | 5078 | int nfs4_release_lockowner(struct nfs4_lock_state *lsp) |
d3c7b7cc TM |
5079 | { |
5080 | struct nfs_server *server = lsp->ls_state->owner->so_server; | |
cf470c3e | 5081 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
5082 | struct rpc_message msg = { |
5083 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
5084 | }; | |
5085 | ||
5086 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
cf470c3e TM |
5087 | return -EINVAL; |
5088 | data = kmalloc(sizeof(*data), GFP_NOFS); | |
5089 | if (!data) | |
5090 | return -ENOMEM; | |
5091 | data->lsp = lsp; | |
5ae67c4f | 5092 | data->server = server; |
cf470c3e TM |
5093 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
5094 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
5095 | data->args.lock_owner.s_dev = server->s_dev; | |
5096 | msg.rpc_argp = &data->args; | |
5097 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); | |
5098 | return 0; | |
d3c7b7cc TM |
5099 | } |
5100 | ||
aa1870af BF |
5101 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
5102 | ||
64c2ce8b AK |
5103 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
5104 | const void *buf, size_t buflen, | |
5105 | int flags, int type) | |
6b3b5496 | 5106 | { |
64c2ce8b AK |
5107 | if (strcmp(key, "") != 0) |
5108 | return -EINVAL; | |
4b580ee3 | 5109 | |
64c2ce8b | 5110 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5111 | } |
5112 | ||
64c2ce8b AK |
5113 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
5114 | void *buf, size_t buflen, int type) | |
6b3b5496 | 5115 | { |
64c2ce8b AK |
5116 | if (strcmp(key, "") != 0) |
5117 | return -EINVAL; | |
aa1870af | 5118 | |
64c2ce8b | 5119 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5120 | } |
5121 | ||
64c2ce8b AK |
5122 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
5123 | size_t list_len, const char *name, | |
5124 | size_t name_len, int type) | |
6b3b5496 | 5125 | { |
64c2ce8b | 5126 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 5127 | |
096455a2 BF |
5128 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
5129 | return 0; | |
64c2ce8b AK |
5130 | |
5131 | if (list && len <= list_len) | |
5132 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 5133 | return len; |
6b3b5496 BF |
5134 | } |
5135 | ||
533eb461 AA |
5136 | /* |
5137 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
5138 | */ | |
69aaaae1 TM |
5139 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
5140 | { | |
533eb461 AA |
5141 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
5142 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
5143 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 5144 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
5145 | return; |
5146 | ||
5147 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 5148 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
5149 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
5150 | fattr->nlink = 2; | |
5151 | } | |
5152 | ||
f05d147f BS |
5153 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5154 | const struct qstr *name, | |
5155 | struct nfs4_fs_locations *fs_locations, | |
5156 | struct page *page) | |
683b57b4 TM |
5157 | { |
5158 | struct nfs_server *server = NFS_SERVER(dir); | |
5159 | u32 bitmask[2] = { | |
361e624f | 5160 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
5161 | }; |
5162 | struct nfs4_fs_locations_arg args = { | |
5163 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 5164 | .name = name, |
683b57b4 TM |
5165 | .page = page, |
5166 | .bitmask = bitmask, | |
5167 | }; | |
22958463 BH |
5168 | struct nfs4_fs_locations_res res = { |
5169 | .fs_locations = fs_locations, | |
5170 | }; | |
683b57b4 TM |
5171 | struct rpc_message msg = { |
5172 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
5173 | .rpc_argp = &args, | |
22958463 | 5174 | .rpc_resp = &res, |
683b57b4 TM |
5175 | }; |
5176 | int status; | |
5177 | ||
3110ff80 | 5178 | dprintk("%s: start\n", __func__); |
533eb461 AA |
5179 | |
5180 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
5181 | * is not supported */ | |
5182 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
5183 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
5184 | else | |
5185 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
5186 | ||
c228fd3a | 5187 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 5188 | fs_locations->server = server; |
830b8e33 | 5189 | fs_locations->nlocations = 0; |
f05d147f | 5190 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 5191 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
5192 | return status; |
5193 | } | |
5194 | ||
f05d147f BS |
5195 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5196 | const struct qstr *name, | |
5197 | struct nfs4_fs_locations *fs_locations, | |
5198 | struct page *page) | |
db0a9593 BS |
5199 | { |
5200 | struct nfs4_exception exception = { }; | |
5201 | int err; | |
5202 | do { | |
5203 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
f05d147f | 5204 | _nfs4_proc_fs_locations(client, dir, name, fs_locations, page), |
db0a9593 BS |
5205 | &exception); |
5206 | } while (exception.retry); | |
5207 | return err; | |
5208 | } | |
5209 | ||
5a5ea0d4 BS |
5210 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) |
5211 | { | |
5212 | int status; | |
5213 | struct nfs4_secinfo_arg args = { | |
5214 | .dir_fh = NFS_FH(dir), | |
5215 | .name = name, | |
5216 | }; | |
5217 | struct nfs4_secinfo_res res = { | |
5218 | .flavors = flavors, | |
5219 | }; | |
5220 | struct rpc_message msg = { | |
5221 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
5222 | .rpc_argp = &args, | |
5223 | .rpc_resp = &res, | |
5224 | }; | |
5225 | ||
5226 | dprintk("NFS call secinfo %s\n", name->name); | |
5227 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); | |
5228 | dprintk("NFS reply secinfo: %d\n", status); | |
5229 | return status; | |
5230 | } | |
5231 | ||
72de53ec BS |
5232 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
5233 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
5234 | { |
5235 | struct nfs4_exception exception = { }; | |
5236 | int err; | |
5237 | do { | |
5238 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
5239 | _nfs4_proc_secinfo(dir, name, flavors), | |
5240 | &exception); | |
5241 | } while (exception.retry); | |
5242 | return err; | |
5243 | } | |
5244 | ||
557134a3 | 5245 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
5246 | /* |
5247 | * Check the exchange flags returned by the server for invalid flags, having | |
5248 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
5249 | * DS flags set. | |
5250 | */ | |
5251 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
5252 | { | |
5253 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
5254 | goto out_inval; | |
5255 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
5256 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
5257 | goto out_inval; | |
5258 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
5259 | goto out_inval; | |
5260 | return NFS_OK; | |
5261 | out_inval: | |
5262 | return -NFS4ERR_INVAL; | |
5263 | } | |
5264 | ||
78fe0f41 | 5265 | static bool |
79d4e1f0 CL |
5266 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
5267 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
5268 | { |
5269 | if (a->server_scope_sz == b->server_scope_sz && | |
5270 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
5271 | return true; | |
5272 | ||
5273 | return false; | |
5274 | } | |
5275 | ||
7c44f1ae WAA |
5276 | /* |
5277 | * nfs4_proc_bind_conn_to_session() | |
5278 | * | |
5279 | * The 4.1 client currently uses the same TCP connection for the | |
5280 | * fore and backchannel. | |
5281 | */ | |
2cf047c9 | 5282 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred) |
7c44f1ae WAA |
5283 | { |
5284 | int status; | |
5285 | struct nfs41_bind_conn_to_session_res res; | |
5286 | struct rpc_message msg = { | |
5287 | .rpc_proc = | |
5288 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
5289 | .rpc_argp = clp, | |
5290 | .rpc_resp = &res, | |
2cf047c9 | 5291 | .rpc_cred = cred, |
7c44f1ae WAA |
5292 | }; |
5293 | ||
5294 | dprintk("--> %s\n", __func__); | |
7c44f1ae WAA |
5295 | |
5296 | res.session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); | |
5297 | if (unlikely(res.session == NULL)) { | |
5298 | status = -ENOMEM; | |
5299 | goto out; | |
5300 | } | |
5301 | ||
5302 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5303 | if (status == 0) { | |
5304 | if (memcmp(res.session->sess_id.data, | |
5305 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { | |
5306 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
5307 | status = -EIO; | |
5308 | goto out_session; | |
5309 | } | |
5310 | if (res.dir != NFS4_CDFS4_BOTH) { | |
5311 | dprintk("NFS: %s: Unexpected direction from server\n", | |
5312 | __func__); | |
5313 | status = -EIO; | |
5314 | goto out_session; | |
5315 | } | |
5316 | if (res.use_conn_in_rdma_mode) { | |
5317 | dprintk("NFS: %s: Server returned RDMA mode = true\n", | |
5318 | __func__); | |
5319 | status = -EIO; | |
5320 | goto out_session; | |
5321 | } | |
5322 | } | |
5323 | out_session: | |
5324 | kfree(res.session); | |
5325 | out: | |
5326 | dprintk("<-- %s status= %d\n", __func__, status); | |
5327 | return status; | |
5328 | } | |
5329 | ||
99fe60d0 BH |
5330 | /* |
5331 | * nfs4_proc_exchange_id() | |
5332 | * | |
6bbb4ae8 CL |
5333 | * Returns zero, a negative errno, or a negative NFS4ERR status code. |
5334 | * | |
99fe60d0 BH |
5335 | * Since the clientid has expired, all compounds using sessions |
5336 | * associated with the stale clientid will be returning | |
5337 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
5338 | * be in some phase of session reset. | |
5339 | */ | |
4d643d1d | 5340 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
5341 | { |
5342 | nfs4_verifier verifier; | |
5343 | struct nfs41_exchange_id_args args = { | |
cd93710e | 5344 | .verifier = &verifier, |
99fe60d0 | 5345 | .client = clp, |
357f54d6 | 5346 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, |
99fe60d0 BH |
5347 | }; |
5348 | struct nfs41_exchange_id_res res = { | |
32b01310 | 5349 | 0 |
99fe60d0 BH |
5350 | }; |
5351 | int status; | |
5352 | struct rpc_message msg = { | |
5353 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
5354 | .rpc_argp = &args, | |
5355 | .rpc_resp = &res, | |
5356 | .rpc_cred = cred, | |
5357 | }; | |
99fe60d0 | 5358 | |
f092075d | 5359 | nfs4_init_boot_verifier(clp, &verifier); |
e984a55a CL |
5360 | args.id_len = nfs4_init_uniform_client_string(clp, args.id, |
5361 | sizeof(args.id)); | |
6bbb4ae8 CL |
5362 | dprintk("NFS call exchange_id auth=%s, '%.*s'\n", |
5363 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
5364 | args.id_len, args.id); | |
99fe60d0 | 5365 | |
acdeb69d | 5366 | res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
bbafffd2 | 5367 | GFP_NOFS); |
acdeb69d | 5368 | if (unlikely(res.server_owner == NULL)) { |
abe9a6d5 WAA |
5369 | status = -ENOMEM; |
5370 | goto out; | |
5371 | } | |
78fe0f41 | 5372 | |
79d4e1f0 | 5373 | res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 5374 | GFP_NOFS); |
177313f1 | 5375 | if (unlikely(res.server_scope == NULL)) { |
abe9a6d5 | 5376 | status = -ENOMEM; |
acdeb69d | 5377 | goto out_server_owner; |
abe9a6d5 | 5378 | } |
78fe0f41 | 5379 | |
bbafffd2 | 5380 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
177313f1 | 5381 | if (unlikely(res.impl_id == NULL)) { |
7d2ed9ac WAA |
5382 | status = -ENOMEM; |
5383 | goto out_server_scope; | |
5384 | } | |
5385 | ||
1bd714f2 | 5386 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
177313f1 | 5387 | if (status == 0) |
32b01310 | 5388 | status = nfs4_check_cl_exchange_flags(res.flags); |
78fe0f41 | 5389 | |
acdeb69d | 5390 | if (status == 0) { |
32b01310 TM |
5391 | clp->cl_clientid = res.clientid; |
5392 | clp->cl_exchange_flags = (res.flags & ~EXCHGID4_FLAG_CONFIRMED_R); | |
5393 | if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R)) | |
5394 | clp->cl_seqid = res.seqid; | |
5395 | ||
acdeb69d CL |
5396 | kfree(clp->cl_serverowner); |
5397 | clp->cl_serverowner = res.server_owner; | |
5398 | res.server_owner = NULL; | |
78fe0f41 | 5399 | |
7d2ed9ac | 5400 | /* use the most recent implementation id */ |
59155546 CL |
5401 | kfree(clp->cl_implid); |
5402 | clp->cl_implid = res.impl_id; | |
7d2ed9ac | 5403 | |
177313f1 | 5404 | if (clp->cl_serverscope != NULL && |
79d4e1f0 | 5405 | !nfs41_same_server_scope(clp->cl_serverscope, |
78fe0f41 WAA |
5406 | res.server_scope)) { |
5407 | dprintk("%s: server_scope mismatch detected\n", | |
5408 | __func__); | |
5409 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
79d4e1f0 CL |
5410 | kfree(clp->cl_serverscope); |
5411 | clp->cl_serverscope = NULL; | |
78fe0f41 WAA |
5412 | } |
5413 | ||
177313f1 | 5414 | if (clp->cl_serverscope == NULL) { |
79d4e1f0 | 5415 | clp->cl_serverscope = res.server_scope; |
abe9a6d5 WAA |
5416 | goto out; |
5417 | } | |
32b01310 TM |
5418 | } else |
5419 | kfree(res.impl_id); | |
7d2ed9ac | 5420 | |
acdeb69d CL |
5421 | out_server_owner: |
5422 | kfree(res.server_owner); | |
7d2ed9ac | 5423 | out_server_scope: |
abe9a6d5 WAA |
5424 | kfree(res.server_scope); |
5425 | out: | |
177313f1 | 5426 | if (clp->cl_implid != NULL) |
6bbb4ae8 | 5427 | dprintk("NFS reply exchange_id: Server Implementation ID: " |
7d2ed9ac | 5428 | "domain: %s, name: %s, date: %llu,%u\n", |
6bbb4ae8 | 5429 | clp->cl_implid->domain, clp->cl_implid->name, |
59155546 CL |
5430 | clp->cl_implid->date.seconds, |
5431 | clp->cl_implid->date.nseconds); | |
6bbb4ae8 | 5432 | dprintk("NFS reply exchange_id: %d\n", status); |
99fe60d0 BH |
5433 | return status; |
5434 | } | |
5435 | ||
66245539 TM |
5436 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
5437 | struct rpc_cred *cred) | |
5438 | { | |
5439 | struct rpc_message msg = { | |
5440 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
5441 | .rpc_argp = clp, | |
5442 | .rpc_cred = cred, | |
5443 | }; | |
5444 | int status; | |
5445 | ||
5446 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5447 | if (status) | |
02c67525 | 5448 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
5449 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
5450 | return status; | |
5451 | } | |
5452 | ||
5453 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
5454 | struct rpc_cred *cred) | |
5455 | { | |
5456 | unsigned int loop; | |
5457 | int ret; | |
5458 | ||
5459 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
5460 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
5461 | switch (ret) { | |
5462 | case -NFS4ERR_DELAY: | |
5463 | case -NFS4ERR_CLIENTID_BUSY: | |
5464 | ssleep(1); | |
5465 | break; | |
5466 | default: | |
5467 | return ret; | |
5468 | } | |
5469 | } | |
5470 | return 0; | |
5471 | } | |
5472 | ||
5473 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
5474 | { | |
5475 | struct rpc_cred *cred; | |
5476 | int ret = 0; | |
5477 | ||
5478 | if (clp->cl_mvops->minor_version < 1) | |
5479 | goto out; | |
5480 | if (clp->cl_exchange_flags == 0) | |
5481 | goto out; | |
05f4c350 CL |
5482 | if (clp->cl_preserve_clid) |
5483 | goto out; | |
66245539 TM |
5484 | cred = nfs4_get_exchange_id_cred(clp); |
5485 | ret = nfs4_proc_destroy_clientid(clp, cred); | |
5486 | if (cred) | |
5487 | put_rpccred(cred); | |
5488 | switch (ret) { | |
5489 | case 0: | |
5490 | case -NFS4ERR_STALE_CLIENTID: | |
5491 | clp->cl_exchange_flags = 0; | |
5492 | } | |
5493 | out: | |
5494 | return ret; | |
5495 | } | |
5496 | ||
2050f0cc AA |
5497 | struct nfs4_get_lease_time_data { |
5498 | struct nfs4_get_lease_time_args *args; | |
5499 | struct nfs4_get_lease_time_res *res; | |
5500 | struct nfs_client *clp; | |
5501 | }; | |
5502 | ||
5503 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
5504 | void *calldata) | |
5505 | { | |
2050f0cc AA |
5506 | struct nfs4_get_lease_time_data *data = |
5507 | (struct nfs4_get_lease_time_data *)calldata; | |
5508 | ||
5509 | dprintk("--> %s\n", __func__); | |
5510 | /* just setup sequence, do not trigger session recovery | |
5511 | since we're invoked within one */ | |
d9afbd1b TM |
5512 | nfs41_setup_sequence(data->clp->cl_session, |
5513 | &data->args->la_seq_args, | |
5514 | &data->res->lr_seq_res, | |
5515 | task); | |
2050f0cc AA |
5516 | dprintk("<-- %s\n", __func__); |
5517 | } | |
5518 | ||
5519 | /* | |
5520 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
5521 | * from sequence operation or clientid errors. | |
5522 | */ | |
5523 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
5524 | { | |
5525 | struct nfs4_get_lease_time_data *data = | |
5526 | (struct nfs4_get_lease_time_data *)calldata; | |
5527 | ||
5528 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5529 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
5530 | return; | |
2050f0cc AA |
5531 | switch (task->tk_status) { |
5532 | case -NFS4ERR_DELAY: | |
5533 | case -NFS4ERR_GRACE: | |
5534 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
5535 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
5536 | task->tk_status = 0; | |
a8a4ae3a AA |
5537 | /* fall through */ |
5538 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 5539 | rpc_restart_call_prepare(task); |
2050f0cc AA |
5540 | return; |
5541 | } | |
2050f0cc AA |
5542 | dprintk("<-- %s\n", __func__); |
5543 | } | |
5544 | ||
17280175 | 5545 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
5546 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
5547 | .rpc_call_done = nfs4_get_lease_time_done, | |
5548 | }; | |
5549 | ||
5550 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
5551 | { | |
5552 | struct rpc_task *task; | |
5553 | struct nfs4_get_lease_time_args args; | |
5554 | struct nfs4_get_lease_time_res res = { | |
5555 | .lr_fsinfo = fsinfo, | |
5556 | }; | |
5557 | struct nfs4_get_lease_time_data data = { | |
5558 | .args = &args, | |
5559 | .res = &res, | |
5560 | .clp = clp, | |
5561 | }; | |
5562 | struct rpc_message msg = { | |
5563 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
5564 | .rpc_argp = &args, | |
5565 | .rpc_resp = &res, | |
5566 | }; | |
5567 | struct rpc_task_setup task_setup = { | |
5568 | .rpc_client = clp->cl_rpcclient, | |
5569 | .rpc_message = &msg, | |
5570 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
5571 | .callback_data = &data, |
5572 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
5573 | }; |
5574 | int status; | |
5575 | ||
9d12b216 | 5576 | nfs41_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
8fe72bac | 5577 | nfs4_set_sequence_privileged(&args.la_seq_args); |
2050f0cc AA |
5578 | dprintk("--> %s\n", __func__); |
5579 | task = rpc_run_task(&task_setup); | |
5580 | ||
5581 | if (IS_ERR(task)) | |
5582 | status = PTR_ERR(task); | |
5583 | else { | |
5584 | status = task->tk_status; | |
5585 | rpc_put_task(task); | |
5586 | } | |
5587 | dprintk("<-- %s return %d\n", __func__, status); | |
5588 | ||
5589 | return status; | |
5590 | } | |
5591 | ||
fc931582 AA |
5592 | /* |
5593 | * Initialize the values to be used by the client in CREATE_SESSION | |
5594 | * If nfs4_init_session set the fore channel request and response sizes, | |
5595 | * use them. | |
5596 | * | |
5597 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
5598 | * always set csa_cachethis to FALSE because the current implementation | |
5599 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
5600 | */ | |
5601 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
5602 | { | |
5603 | struct nfs4_session *session = args->client->cl_session; | |
ae72ae67 TM |
5604 | unsigned int mxrqst_sz = session->fc_target_max_rqst_sz, |
5605 | mxresp_sz = session->fc_target_max_resp_sz; | |
fc931582 AA |
5606 | |
5607 | if (mxrqst_sz == 0) | |
5608 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
5609 | if (mxresp_sz == 0) | |
5610 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
5611 | /* Fore channel attributes */ | |
fc931582 AA |
5612 | args->fc_attrs.max_rqst_sz = mxrqst_sz; |
5613 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 | 5614 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 5615 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
5616 | |
5617 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 5618 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
5619 | __func__, |
5620 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 5621 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
5622 | |
5623 | /* Back channel attributes */ | |
fc931582 AA |
5624 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
5625 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
5626 | args->bc_attrs.max_resp_sz_cached = 0; | |
5627 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
5628 | args->bc_attrs.max_reqs = 1; | |
5629 | ||
5630 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
5631 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
5632 | __func__, | |
5633 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
5634 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
5635 | args->bc_attrs.max_reqs); | |
5636 | } | |
5637 | ||
43c2e885 | 5638 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 5639 | { |
43c2e885 BF |
5640 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
5641 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
5642 | ||
43c2e885 BF |
5643 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
5644 | return -EINVAL; | |
5645 | /* | |
5646 | * Our requested max_ops is the minimum we need; we're not | |
5647 | * prepared to break up compounds into smaller pieces than that. | |
5648 | * So, no point even trying to continue if the server won't | |
5649 | * cooperate: | |
5650 | */ | |
5651 | if (rcvd->max_ops < sent->max_ops) | |
5652 | return -EINVAL; | |
5653 | if (rcvd->max_reqs == 0) | |
5654 | return -EINVAL; | |
b4b9a0c1 VG |
5655 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
5656 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 5657 | return 0; |
8d35301d AA |
5658 | } |
5659 | ||
43c2e885 BF |
5660 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
5661 | { | |
5662 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
5663 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 5664 | |
43c2e885 BF |
5665 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
5666 | return -EINVAL; | |
5667 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
5668 | return -EINVAL; | |
5669 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
5670 | return -EINVAL; | |
5671 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 5672 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 5673 | return -EINVAL; |
b4b9a0c1 | 5674 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 BF |
5675 | return -EINVAL; |
5676 | return 0; | |
5677 | } | |
8d35301d | 5678 | |
8d35301d AA |
5679 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
5680 | struct nfs4_session *session) | |
5681 | { | |
43c2e885 | 5682 | int ret; |
8d35301d | 5683 | |
43c2e885 BF |
5684 | ret = nfs4_verify_fore_channel_attrs(args, session); |
5685 | if (ret) | |
5686 | return ret; | |
5687 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
5688 | } |
5689 | ||
848f5bda TM |
5690 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
5691 | struct rpc_cred *cred) | |
fc931582 AA |
5692 | { |
5693 | struct nfs4_session *session = clp->cl_session; | |
5694 | struct nfs41_create_session_args args = { | |
5695 | .client = clp, | |
5696 | .cb_program = NFS4_CALLBACK, | |
5697 | }; | |
5698 | struct nfs41_create_session_res res = { | |
5699 | .client = clp, | |
5700 | }; | |
5701 | struct rpc_message msg = { | |
5702 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
5703 | .rpc_argp = &args, | |
5704 | .rpc_resp = &res, | |
848f5bda | 5705 | .rpc_cred = cred, |
fc931582 AA |
5706 | }; |
5707 | int status; | |
5708 | ||
5709 | nfs4_init_channel_attrs(&args); | |
0f91421e | 5710 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 5711 | |
1bd714f2 | 5712 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
fc931582 | 5713 | |
43095d39 | 5714 | if (!status) { |
8d35301d AA |
5715 | /* Verify the session's negotiated channel_attrs values */ |
5716 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
5717 | /* Increment the clientid slot sequence id */ |
5718 | clp->cl_seqid++; | |
5719 | } | |
5720 | ||
5721 | return status; | |
5722 | } | |
5723 | ||
5724 | /* | |
5725 | * Issues a CREATE_SESSION operation to the server. | |
5726 | * It is the responsibility of the caller to verify the session is | |
5727 | * expired before calling this routine. | |
5728 | */ | |
848f5bda | 5729 | int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred) |
fc931582 AA |
5730 | { |
5731 | int status; | |
5732 | unsigned *ptr; | |
fc931582 AA |
5733 | struct nfs4_session *session = clp->cl_session; |
5734 | ||
5735 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
5736 | ||
848f5bda | 5737 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
5738 | if (status) |
5739 | goto out; | |
5740 | ||
aacd5537 AA |
5741 | /* Init or reset the session slot tables */ |
5742 | status = nfs4_setup_session_slot_tables(session); | |
5743 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
5744 | if (status) |
5745 | goto out; | |
5746 | ||
5747 | ptr = (unsigned *)&session->sess_id.data[0]; | |
5748 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
5749 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
5750 | out: |
5751 | dprintk("<-- %s\n", __func__); | |
5752 | return status; | |
5753 | } | |
5754 | ||
0f3e66c6 AA |
5755 | /* |
5756 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
5757 | * The caller must serialize access to this routine. | |
5758 | */ | |
848f5bda TM |
5759 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
5760 | struct rpc_cred *cred) | |
0f3e66c6 | 5761 | { |
848f5bda TM |
5762 | struct rpc_message msg = { |
5763 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
5764 | .rpc_argp = session, | |
5765 | .rpc_cred = cred, | |
5766 | }; | |
0f3e66c6 | 5767 | int status = 0; |
0f3e66c6 AA |
5768 | |
5769 | dprintk("--> nfs4_proc_destroy_session\n"); | |
5770 | ||
5771 | /* session is still being setup */ | |
5772 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
5773 | return status; | |
5774 | ||
1bd714f2 | 5775 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
0f3e66c6 AA |
5776 | |
5777 | if (status) | |
08106ac7 | 5778 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
5779 | "Session has been destroyed regardless...\n", status); |
5780 | ||
5781 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
5782 | return status; | |
5783 | } | |
5784 | ||
fc01cea9 AA |
5785 | /* |
5786 | * Renew the cl_session lease. | |
5787 | */ | |
d5f8d3fe TM |
5788 | struct nfs4_sequence_data { |
5789 | struct nfs_client *clp; | |
5790 | struct nfs4_sequence_args args; | |
5791 | struct nfs4_sequence_res res; | |
5792 | }; | |
5793 | ||
dc96aef9 AB |
5794 | static void nfs41_sequence_release(void *data) |
5795 | { | |
d5f8d3fe TM |
5796 | struct nfs4_sequence_data *calldata = data; |
5797 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 5798 | |
7135840f AB |
5799 | if (atomic_read(&clp->cl_count) > 1) |
5800 | nfs4_schedule_state_renewal(clp); | |
5801 | nfs_put_client(clp); | |
d5f8d3fe | 5802 | kfree(calldata); |
dc96aef9 AB |
5803 | } |
5804 | ||
aa5190d0 TM |
5805 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5806 | { | |
5807 | switch(task->tk_status) { | |
5808 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5809 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5810 | return -EAGAIN; | |
5811 | default: | |
0400a6b0 | 5812 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5813 | } |
5814 | return 0; | |
5815 | } | |
5816 | ||
dc96aef9 | 5817 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 5818 | { |
d5f8d3fe TM |
5819 | struct nfs4_sequence_data *calldata = data; |
5820 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 5821 | |
14516c3a TM |
5822 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
5823 | return; | |
fc01cea9 AA |
5824 | |
5825 | if (task->tk_status < 0) { | |
5826 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
5827 | if (atomic_read(&clp->cl_count) == 1) |
5828 | goto out; | |
fc01cea9 | 5829 | |
aa5190d0 TM |
5830 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
5831 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
5832 | return; |
5833 | } | |
5834 | } | |
fc01cea9 | 5835 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 5836 | out: |
fc01cea9 AA |
5837 | dprintk("<-- %s\n", __func__); |
5838 | } | |
5839 | ||
5840 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
5841 | { | |
d5f8d3fe TM |
5842 | struct nfs4_sequence_data *calldata = data; |
5843 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
5844 | struct nfs4_sequence_args *args; |
5845 | struct nfs4_sequence_res *res; | |
5846 | ||
fc01cea9 AA |
5847 | args = task->tk_msg.rpc_argp; |
5848 | res = task->tk_msg.rpc_resp; | |
5849 | ||
d9afbd1b | 5850 | nfs41_setup_sequence(clp->cl_session, args, res, task); |
fc01cea9 AA |
5851 | } |
5852 | ||
5853 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
5854 | .rpc_call_done = nfs41_sequence_call_done, | |
5855 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 5856 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
5857 | }; |
5858 | ||
8fe72bac TM |
5859 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, |
5860 | struct rpc_cred *cred, | |
5861 | bool is_privileged) | |
fc01cea9 | 5862 | { |
d5f8d3fe | 5863 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
5864 | struct rpc_message msg = { |
5865 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
5866 | .rpc_cred = cred, | |
5867 | }; | |
71ac6da9 TM |
5868 | struct rpc_task_setup task_setup_data = { |
5869 | .rpc_client = clp->cl_rpcclient, | |
5870 | .rpc_message = &msg, | |
8fe72bac | 5871 | .callback_ops = &nfs41_sequence_ops, |
71ac6da9 TM |
5872 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT, |
5873 | }; | |
fc01cea9 | 5874 | |
7135840f | 5875 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 5876 | return ERR_PTR(-EIO); |
dfb4f309 | 5877 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 5878 | if (calldata == NULL) { |
7135840f | 5879 | nfs_put_client(clp); |
71ac6da9 | 5880 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 5881 | } |
9d12b216 | 5882 | nfs41_init_sequence(&calldata->args, &calldata->res, 0); |
8fe72bac TM |
5883 | if (is_privileged) |
5884 | nfs4_set_sequence_privileged(&calldata->args); | |
d5f8d3fe TM |
5885 | msg.rpc_argp = &calldata->args; |
5886 | msg.rpc_resp = &calldata->res; | |
5887 | calldata->clp = clp; | |
71ac6da9 | 5888 | task_setup_data.callback_data = calldata; |
fc01cea9 | 5889 | |
71ac6da9 TM |
5890 | return rpc_run_task(&task_setup_data); |
5891 | } | |
5892 | ||
2f60ea6b | 5893 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
5894 | { |
5895 | struct rpc_task *task; | |
5896 | int ret = 0; | |
5897 | ||
2f60ea6b TM |
5898 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
5899 | return 0; | |
8fe72bac | 5900 | task = _nfs41_proc_sequence(clp, cred, false); |
71ac6da9 TM |
5901 | if (IS_ERR(task)) |
5902 | ret = PTR_ERR(task); | |
5903 | else | |
bf294b41 | 5904 | rpc_put_task_async(task); |
71ac6da9 TM |
5905 | dprintk("<-- %s status=%d\n", __func__, ret); |
5906 | return ret; | |
5907 | } | |
5908 | ||
5909 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5910 | { | |
5911 | struct rpc_task *task; | |
5912 | int ret; | |
5913 | ||
8fe72bac | 5914 | task = _nfs41_proc_sequence(clp, cred, true); |
71ac6da9 TM |
5915 | if (IS_ERR(task)) { |
5916 | ret = PTR_ERR(task); | |
5917 | goto out; | |
5918 | } | |
5919 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
5920 | if (!ret) { |
5921 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
5922 | ||
5923 | if (task->tk_status == 0) | |
5924 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 5925 | ret = task->tk_status; |
b4410c2f | 5926 | } |
71ac6da9 TM |
5927 | rpc_put_task(task); |
5928 | out: | |
5929 | dprintk("<-- %s status=%d\n", __func__, ret); | |
5930 | return ret; | |
fc01cea9 AA |
5931 | } |
5932 | ||
fce5c838 RL |
5933 | struct nfs4_reclaim_complete_data { |
5934 | struct nfs_client *clp; | |
5935 | struct nfs41_reclaim_complete_args arg; | |
5936 | struct nfs41_reclaim_complete_res res; | |
5937 | }; | |
5938 | ||
5939 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
5940 | { | |
5941 | struct nfs4_reclaim_complete_data *calldata = data; | |
5942 | ||
d9afbd1b TM |
5943 | nfs41_setup_sequence(calldata->clp->cl_session, |
5944 | &calldata->arg.seq_args, | |
5945 | &calldata->res.seq_res, | |
5946 | task); | |
fce5c838 RL |
5947 | } |
5948 | ||
aa5190d0 TM |
5949 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5950 | { | |
5951 | switch(task->tk_status) { | |
5952 | case 0: | |
5953 | case -NFS4ERR_COMPLETE_ALREADY: | |
5954 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
5955 | break; | |
5956 | case -NFS4ERR_DELAY: | |
aa5190d0 | 5957 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
5958 | /* fall through */ |
5959 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
5960 | return -EAGAIN; |
5961 | default: | |
0400a6b0 | 5962 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5963 | } |
5964 | return 0; | |
5965 | } | |
5966 | ||
fce5c838 RL |
5967 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
5968 | { | |
5969 | struct nfs4_reclaim_complete_data *calldata = data; | |
5970 | struct nfs_client *clp = calldata->clp; | |
5971 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
5972 | ||
5973 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5974 | if (!nfs41_sequence_done(task, res)) |
5975 | return; | |
fce5c838 | 5976 | |
aa5190d0 TM |
5977 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
5978 | rpc_restart_call_prepare(task); | |
5979 | return; | |
5980 | } | |
fce5c838 RL |
5981 | dprintk("<-- %s\n", __func__); |
5982 | } | |
5983 | ||
5984 | static void nfs4_free_reclaim_complete_data(void *data) | |
5985 | { | |
5986 | struct nfs4_reclaim_complete_data *calldata = data; | |
5987 | ||
5988 | kfree(calldata); | |
5989 | } | |
5990 | ||
5991 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
5992 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
5993 | .rpc_call_done = nfs4_reclaim_complete_done, | |
5994 | .rpc_release = nfs4_free_reclaim_complete_data, | |
5995 | }; | |
5996 | ||
5997 | /* | |
5998 | * Issue a global reclaim complete. | |
5999 | */ | |
6000 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
6001 | { | |
6002 | struct nfs4_reclaim_complete_data *calldata; | |
6003 | struct rpc_task *task; | |
6004 | struct rpc_message msg = { | |
6005 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
6006 | }; | |
6007 | struct rpc_task_setup task_setup_data = { | |
6008 | .rpc_client = clp->cl_rpcclient, | |
6009 | .rpc_message = &msg, | |
6010 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
6011 | .flags = RPC_TASK_ASYNC, | |
6012 | }; | |
6013 | int status = -ENOMEM; | |
6014 | ||
6015 | dprintk("--> %s\n", __func__); | |
8535b2be | 6016 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
6017 | if (calldata == NULL) |
6018 | goto out; | |
6019 | calldata->clp = clp; | |
6020 | calldata->arg.one_fs = 0; | |
fce5c838 | 6021 | |
9d12b216 | 6022 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
8fe72bac | 6023 | nfs4_set_sequence_privileged(&calldata->arg.seq_args); |
fce5c838 RL |
6024 | msg.rpc_argp = &calldata->arg; |
6025 | msg.rpc_resp = &calldata->res; | |
6026 | task_setup_data.callback_data = calldata; | |
6027 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 6028 | if (IS_ERR(task)) { |
fce5c838 | 6029 | status = PTR_ERR(task); |
acf82b85 DC |
6030 | goto out; |
6031 | } | |
c34c32ea AA |
6032 | status = nfs4_wait_for_completion_rpc_task(task); |
6033 | if (status == 0) | |
6034 | status = task->tk_status; | |
fce5c838 | 6035 | rpc_put_task(task); |
acf82b85 | 6036 | return 0; |
fce5c838 RL |
6037 | out: |
6038 | dprintk("<-- %s status=%d\n", __func__, status); | |
6039 | return status; | |
6040 | } | |
b1f69b75 AA |
6041 | |
6042 | static void | |
6043 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
6044 | { | |
6045 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 6046 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
6ba7db34 | 6047 | struct nfs4_session *session = nfs4_get_session(server); |
b1f69b75 AA |
6048 | |
6049 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
6050 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
6051 | * right now covering the LAYOUTGET we are about to send. | |
6052 | * However, that is not so catastrophic, and there seems | |
6053 | * to be no way to prevent it completely. | |
6054 | */ | |
6ba7db34 | 6055 | if (nfs41_setup_sequence(session, &lgp->args.seq_args, |
9d12b216 | 6056 | &lgp->res.seq_res, task)) |
b1f69b75 | 6057 | return; |
cf7d63f1 FI |
6058 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
6059 | NFS_I(lgp->args.inode)->layout, | |
6060 | lgp->args.ctx->state)) { | |
6061 | rpc_exit(task, NFS4_OK); | |
cf7d63f1 | 6062 | } |
b1f69b75 AA |
6063 | } |
6064 | ||
6065 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
6066 | { | |
6067 | struct nfs4_layoutget *lgp = calldata; | |
ee314c2a TM |
6068 | struct inode *inode = lgp->args.inode; |
6069 | struct nfs_server *server = NFS_SERVER(inode); | |
6070 | struct pnfs_layout_hdr *lo; | |
6071 | struct nfs4_state *state = NULL; | |
30005121 | 6072 | unsigned long timeo, giveup; |
b1f69b75 AA |
6073 | |
6074 | dprintk("--> %s\n", __func__); | |
6075 | ||
6ba7db34 | 6076 | if (!nfs41_sequence_done(task, &lgp->res.seq_res)) |
ee314c2a | 6077 | goto out; |
b1f69b75 AA |
6078 | |
6079 | switch (task->tk_status) { | |
6080 | case 0: | |
ee314c2a | 6081 | goto out; |
b1f69b75 AA |
6082 | case -NFS4ERR_LAYOUTTRYLATER: |
6083 | case -NFS4ERR_RECALLCONFLICT: | |
30005121 WAA |
6084 | timeo = rpc_get_timeout(task->tk_client); |
6085 | giveup = lgp->args.timestamp + timeo; | |
6086 | if (time_after(giveup, jiffies)) | |
6087 | task->tk_status = -NFS4ERR_DELAY; | |
ee314c2a TM |
6088 | break; |
6089 | case -NFS4ERR_EXPIRED: | |
6090 | case -NFS4ERR_BAD_STATEID: | |
6091 | spin_lock(&inode->i_lock); | |
6092 | lo = NFS_I(inode)->layout; | |
6093 | if (!lo || list_empty(&lo->plh_segs)) { | |
6094 | spin_unlock(&inode->i_lock); | |
6095 | /* If the open stateid was bad, then recover it. */ | |
6096 | state = lgp->args.ctx->state; | |
6097 | } else { | |
6098 | LIST_HEAD(head); | |
6099 | ||
6100 | pnfs_mark_matching_lsegs_invalid(lo, &head, NULL); | |
6101 | spin_unlock(&inode->i_lock); | |
6102 | /* Mark the bad layout state as invalid, then | |
6103 | * retry using the open stateid. */ | |
6104 | pnfs_free_lseg_list(&head); | |
b1f69b75 AA |
6105 | } |
6106 | } | |
ee314c2a TM |
6107 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
6108 | rpc_restart_call_prepare(task); | |
6109 | out: | |
b1f69b75 AA |
6110 | dprintk("<-- %s\n", __func__); |
6111 | } | |
6112 | ||
8554116e IK |
6113 | static size_t max_response_pages(struct nfs_server *server) |
6114 | { | |
6115 | u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; | |
6116 | return nfs_page_array_len(0, max_resp_sz); | |
6117 | } | |
6118 | ||
6119 | static void nfs4_free_pages(struct page **pages, size_t size) | |
6120 | { | |
6121 | int i; | |
6122 | ||
6123 | if (!pages) | |
6124 | return; | |
6125 | ||
6126 | for (i = 0; i < size; i++) { | |
6127 | if (!pages[i]) | |
6128 | break; | |
6129 | __free_page(pages[i]); | |
6130 | } | |
6131 | kfree(pages); | |
6132 | } | |
6133 | ||
6134 | static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags) | |
6135 | { | |
6136 | struct page **pages; | |
6137 | int i; | |
6138 | ||
6139 | pages = kcalloc(size, sizeof(struct page *), gfp_flags); | |
6140 | if (!pages) { | |
6141 | dprintk("%s: can't alloc array of %zu pages\n", __func__, size); | |
6142 | return NULL; | |
6143 | } | |
6144 | ||
6145 | for (i = 0; i < size; i++) { | |
6146 | pages[i] = alloc_page(gfp_flags); | |
6147 | if (!pages[i]) { | |
6148 | dprintk("%s: failed to allocate page\n", __func__); | |
6149 | nfs4_free_pages(pages, size); | |
6150 | return NULL; | |
6151 | } | |
6152 | } | |
6153 | ||
6154 | return pages; | |
6155 | } | |
6156 | ||
b1f69b75 AA |
6157 | static void nfs4_layoutget_release(void *calldata) |
6158 | { | |
6159 | struct nfs4_layoutget *lgp = calldata; | |
a47970ff WAA |
6160 | struct inode *inode = lgp->args.inode; |
6161 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 6162 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
6163 | |
6164 | dprintk("--> %s\n", __func__); | |
8554116e | 6165 | nfs4_free_pages(lgp->args.layout.pages, max_pages); |
a47970ff | 6166 | pnfs_put_layout_hdr(NFS_I(inode)->layout); |
b1f69b75 AA |
6167 | put_nfs_open_context(lgp->args.ctx); |
6168 | kfree(calldata); | |
6169 | dprintk("<-- %s\n", __func__); | |
6170 | } | |
6171 | ||
6172 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
6173 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
6174 | .rpc_call_done = nfs4_layoutget_done, | |
6175 | .rpc_release = nfs4_layoutget_release, | |
6176 | }; | |
6177 | ||
a0b0a6e3 TM |
6178 | struct pnfs_layout_segment * |
6179 | nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags) | |
b1f69b75 | 6180 | { |
a47970ff WAA |
6181 | struct inode *inode = lgp->args.inode; |
6182 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 6183 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
6184 | struct rpc_task *task; |
6185 | struct rpc_message msg = { | |
6186 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
6187 | .rpc_argp = &lgp->args, | |
6188 | .rpc_resp = &lgp->res, | |
6189 | }; | |
6190 | struct rpc_task_setup task_setup_data = { | |
6191 | .rpc_client = server->client, | |
6192 | .rpc_message = &msg, | |
6193 | .callback_ops = &nfs4_layoutget_call_ops, | |
6194 | .callback_data = lgp, | |
6195 | .flags = RPC_TASK_ASYNC, | |
6196 | }; | |
a0b0a6e3 | 6197 | struct pnfs_layout_segment *lseg = NULL; |
b1f69b75 AA |
6198 | int status = 0; |
6199 | ||
6200 | dprintk("--> %s\n", __func__); | |
6201 | ||
8554116e IK |
6202 | lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags); |
6203 | if (!lgp->args.layout.pages) { | |
6204 | nfs4_layoutget_release(lgp); | |
a0b0a6e3 | 6205 | return ERR_PTR(-ENOMEM); |
8554116e IK |
6206 | } |
6207 | lgp->args.layout.pglen = max_pages * PAGE_SIZE; | |
30005121 | 6208 | lgp->args.timestamp = jiffies; |
8554116e | 6209 | |
35124a09 | 6210 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 6211 | lgp->res.seq_res.sr_slot = NULL; |
9d12b216 | 6212 | nfs41_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
a47970ff WAA |
6213 | |
6214 | /* nfs4_layoutget_release calls pnfs_put_layout_hdr */ | |
6215 | pnfs_get_layout_hdr(NFS_I(inode)->layout); | |
6216 | ||
b1f69b75 AA |
6217 | task = rpc_run_task(&task_setup_data); |
6218 | if (IS_ERR(task)) | |
a0b0a6e3 | 6219 | return ERR_CAST(task); |
b1f69b75 | 6220 | status = nfs4_wait_for_completion_rpc_task(task); |
c31663d4 FI |
6221 | if (status == 0) |
6222 | status = task->tk_status; | |
085b7a45 WAA |
6223 | /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */ |
6224 | if (status == 0 && lgp->res.layoutp->len) | |
a0b0a6e3 | 6225 | lseg = pnfs_layout_process(lgp); |
b1f69b75 AA |
6226 | rpc_put_task(task); |
6227 | dprintk("<-- %s status=%d\n", __func__, status); | |
a0b0a6e3 TM |
6228 | if (status) |
6229 | return ERR_PTR(status); | |
6230 | return lseg; | |
b1f69b75 AA |
6231 | } |
6232 | ||
cbe82603 BH |
6233 | static void |
6234 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
6235 | { | |
6236 | struct nfs4_layoutreturn *lrp = calldata; | |
6237 | ||
6238 | dprintk("--> %s\n", __func__); | |
d9afbd1b TM |
6239 | nfs41_setup_sequence(lrp->clp->cl_session, |
6240 | &lrp->args.seq_args, | |
6241 | &lrp->res.seq_res, | |
6242 | task); | |
cbe82603 BH |
6243 | } |
6244 | ||
6245 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
6246 | { | |
6247 | struct nfs4_layoutreturn *lrp = calldata; | |
6248 | struct nfs_server *server; | |
6249 | ||
6250 | dprintk("--> %s\n", __func__); | |
6251 | ||
6ba7db34 | 6252 | if (!nfs41_sequence_done(task, &lrp->res.seq_res)) |
cbe82603 BH |
6253 | return; |
6254 | ||
6255 | server = NFS_SERVER(lrp->args.inode); | |
6256 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 6257 | rpc_restart_call_prepare(task); |
cbe82603 BH |
6258 | return; |
6259 | } | |
cbe82603 BH |
6260 | dprintk("<-- %s\n", __func__); |
6261 | } | |
6262 | ||
6263 | static void nfs4_layoutreturn_release(void *calldata) | |
6264 | { | |
6265 | struct nfs4_layoutreturn *lrp = calldata; | |
849b286f | 6266 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
6267 | |
6268 | dprintk("--> %s\n", __func__); | |
849b286f TM |
6269 | spin_lock(&lo->plh_inode->i_lock); |
6270 | if (lrp->res.lrs_present) | |
6271 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); | |
6272 | lo->plh_block_lgets--; | |
6273 | spin_unlock(&lo->plh_inode->i_lock); | |
70c3bd2b | 6274 | pnfs_put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
6275 | kfree(calldata); |
6276 | dprintk("<-- %s\n", __func__); | |
6277 | } | |
6278 | ||
6279 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
6280 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
6281 | .rpc_call_done = nfs4_layoutreturn_done, | |
6282 | .rpc_release = nfs4_layoutreturn_release, | |
6283 | }; | |
6284 | ||
6285 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
6286 | { | |
6287 | struct rpc_task *task; | |
6288 | struct rpc_message msg = { | |
6289 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
6290 | .rpc_argp = &lrp->args, | |
6291 | .rpc_resp = &lrp->res, | |
6292 | }; | |
6293 | struct rpc_task_setup task_setup_data = { | |
6294 | .rpc_client = lrp->clp->cl_rpcclient, | |
6295 | .rpc_message = &msg, | |
6296 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
6297 | .callback_data = lrp, | |
6298 | }; | |
6299 | int status; | |
6300 | ||
6301 | dprintk("--> %s\n", __func__); | |
9d12b216 | 6302 | nfs41_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
6303 | task = rpc_run_task(&task_setup_data); |
6304 | if (IS_ERR(task)) | |
6305 | return PTR_ERR(task); | |
6306 | status = task->tk_status; | |
6307 | dprintk("<-- %s status=%d\n", __func__, status); | |
6308 | rpc_put_task(task); | |
6309 | return status; | |
6310 | } | |
6311 | ||
7f11d8d3 AA |
6312 | /* |
6313 | * Retrieve the list of Data Server devices from the MDS. | |
6314 | */ | |
6315 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
6316 | const struct nfs_fh *fh, | |
6317 | struct pnfs_devicelist *devlist) | |
6318 | { | |
6319 | struct nfs4_getdevicelist_args args = { | |
6320 | .fh = fh, | |
6321 | .layoutclass = server->pnfs_curr_ld->id, | |
6322 | }; | |
6323 | struct nfs4_getdevicelist_res res = { | |
6324 | .devlist = devlist, | |
6325 | }; | |
6326 | struct rpc_message msg = { | |
6327 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
6328 | .rpc_argp = &args, | |
6329 | .rpc_resp = &res, | |
6330 | }; | |
6331 | int status; | |
6332 | ||
6333 | dprintk("--> %s\n", __func__); | |
6334 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
6335 | &res.seq_res, 0); | |
6336 | dprintk("<-- %s status=%d\n", __func__, status); | |
6337 | return status; | |
6338 | } | |
6339 | ||
6340 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
6341 | const struct nfs_fh *fh, | |
6342 | struct pnfs_devicelist *devlist) | |
6343 | { | |
6344 | struct nfs4_exception exception = { }; | |
6345 | int err; | |
6346 | ||
6347 | do { | |
6348 | err = nfs4_handle_exception(server, | |
6349 | _nfs4_getdevicelist(server, fh, devlist), | |
6350 | &exception); | |
6351 | } while (exception.retry); | |
6352 | ||
6353 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
6354 | err, devlist->num_devs); | |
6355 | ||
6356 | return err; | |
6357 | } | |
6358 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
6359 | ||
b1f69b75 AA |
6360 | static int |
6361 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6362 | { | |
6363 | struct nfs4_getdeviceinfo_args args = { | |
6364 | .pdev = pdev, | |
6365 | }; | |
6366 | struct nfs4_getdeviceinfo_res res = { | |
6367 | .pdev = pdev, | |
6368 | }; | |
6369 | struct rpc_message msg = { | |
6370 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
6371 | .rpc_argp = &args, | |
6372 | .rpc_resp = &res, | |
6373 | }; | |
6374 | int status; | |
6375 | ||
6376 | dprintk("--> %s\n", __func__); | |
7c513058 | 6377 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
6378 | dprintk("<-- %s status=%d\n", __func__, status); |
6379 | ||
6380 | return status; | |
6381 | } | |
6382 | ||
6383 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6384 | { | |
6385 | struct nfs4_exception exception = { }; | |
6386 | int err; | |
6387 | ||
6388 | do { | |
6389 | err = nfs4_handle_exception(server, | |
6390 | _nfs4_proc_getdeviceinfo(server, pdev), | |
6391 | &exception); | |
6392 | } while (exception.retry); | |
6393 | return err; | |
6394 | } | |
6395 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
6396 | ||
863a3c6c AA |
6397 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
6398 | { | |
6399 | struct nfs4_layoutcommit_data *data = calldata; | |
6400 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6ba7db34 | 6401 | struct nfs4_session *session = nfs4_get_session(server); |
863a3c6c | 6402 | |
d9afbd1b TM |
6403 | nfs41_setup_sequence(session, |
6404 | &data->args.seq_args, | |
6405 | &data->res.seq_res, | |
6406 | task); | |
863a3c6c AA |
6407 | } |
6408 | ||
6409 | static void | |
6410 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
6411 | { | |
6412 | struct nfs4_layoutcommit_data *data = calldata; | |
6413 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6414 | ||
6ba7db34 | 6415 | if (!nfs41_sequence_done(task, &data->res.seq_res)) |
863a3c6c AA |
6416 | return; |
6417 | ||
6418 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
6419 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
6420 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
6421 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
6422 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 6423 | task->tk_status = 0; |
e59d27e0 TM |
6424 | break; |
6425 | case 0: | |
863a3c6c AA |
6426 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
6427 | data->res.fattr); | |
e59d27e0 TM |
6428 | break; |
6429 | default: | |
6430 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
6431 | rpc_restart_call_prepare(task); | |
6432 | return; | |
6433 | } | |
6434 | } | |
863a3c6c AA |
6435 | } |
6436 | ||
6437 | static void nfs4_layoutcommit_release(void *calldata) | |
6438 | { | |
6439 | struct nfs4_layoutcommit_data *data = calldata; | |
6440 | ||
db29c089 | 6441 | pnfs_cleanup_layoutcommit(data); |
863a3c6c AA |
6442 | put_rpccred(data->cred); |
6443 | kfree(data); | |
6444 | } | |
6445 | ||
6446 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
6447 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
6448 | .rpc_call_done = nfs4_layoutcommit_done, | |
6449 | .rpc_release = nfs4_layoutcommit_release, | |
6450 | }; | |
6451 | ||
6452 | int | |
ef311537 | 6453 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
6454 | { |
6455 | struct rpc_message msg = { | |
6456 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
6457 | .rpc_argp = &data->args, | |
6458 | .rpc_resp = &data->res, | |
6459 | .rpc_cred = data->cred, | |
6460 | }; | |
6461 | struct rpc_task_setup task_setup_data = { | |
6462 | .task = &data->task, | |
6463 | .rpc_client = NFS_CLIENT(data->args.inode), | |
6464 | .rpc_message = &msg, | |
6465 | .callback_ops = &nfs4_layoutcommit_ops, | |
6466 | .callback_data = data, | |
6467 | .flags = RPC_TASK_ASYNC, | |
6468 | }; | |
6469 | struct rpc_task *task; | |
6470 | int status = 0; | |
6471 | ||
6472 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
6473 | "lbw: %llu inode %lu\n", | |
6474 | data->task.tk_pid, sync, | |
6475 | data->args.lastbytewritten, | |
6476 | data->args.inode->i_ino); | |
6477 | ||
9d12b216 | 6478 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
6479 | task = rpc_run_task(&task_setup_data); |
6480 | if (IS_ERR(task)) | |
6481 | return PTR_ERR(task); | |
ef311537 | 6482 | if (sync == false) |
863a3c6c AA |
6483 | goto out; |
6484 | status = nfs4_wait_for_completion_rpc_task(task); | |
6485 | if (status != 0) | |
6486 | goto out; | |
6487 | status = task->tk_status; | |
6488 | out: | |
6489 | dprintk("%s: status %d\n", __func__, status); | |
6490 | rpc_put_task(task); | |
6491 | return status; | |
6492 | } | |
fca78d6d BS |
6493 | |
6494 | static int | |
6495 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6496 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6497 | { | |
6498 | struct nfs41_secinfo_no_name_args args = { | |
6499 | .style = SECINFO_STYLE_CURRENT_FH, | |
6500 | }; | |
6501 | struct nfs4_secinfo_res res = { | |
6502 | .flavors = flavors, | |
6503 | }; | |
6504 | struct rpc_message msg = { | |
6505 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
6506 | .rpc_argp = &args, | |
6507 | .rpc_resp = &res, | |
6508 | }; | |
6509 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); | |
6510 | } | |
6511 | ||
6512 | static int | |
6513 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6514 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6515 | { | |
6516 | struct nfs4_exception exception = { }; | |
6517 | int err; | |
6518 | do { | |
6519 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6520 | switch (err) { | |
6521 | case 0: | |
6522 | case -NFS4ERR_WRONGSEC: | |
6523 | case -NFS4ERR_NOTSUPP: | |
05e9cfb4 | 6524 | goto out; |
fca78d6d BS |
6525 | default: |
6526 | err = nfs4_handle_exception(server, err, &exception); | |
6527 | } | |
6528 | } while (exception.retry); | |
05e9cfb4 | 6529 | out: |
fca78d6d BS |
6530 | return err; |
6531 | } | |
6532 | ||
6533 | static int | |
6534 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
6535 | struct nfs_fsinfo *info) | |
6536 | { | |
6537 | int err; | |
6538 | struct page *page; | |
6539 | rpc_authflavor_t flavor; | |
6540 | struct nfs4_secinfo_flavors *flavors; | |
6541 | ||
6542 | page = alloc_page(GFP_KERNEL); | |
6543 | if (!page) { | |
6544 | err = -ENOMEM; | |
6545 | goto out; | |
6546 | } | |
6547 | ||
6548 | flavors = page_address(page); | |
6549 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6550 | ||
6551 | /* | |
6552 | * Fall back on "guess and check" method if | |
6553 | * the server doesn't support SECINFO_NO_NAME | |
6554 | */ | |
6555 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
6556 | err = nfs4_find_root_sec(server, fhandle, info); | |
6557 | goto out_freepage; | |
6558 | } | |
6559 | if (err) | |
6560 | goto out_freepage; | |
6561 | ||
6562 | flavor = nfs_find_best_sec(flavors); | |
6563 | if (err == 0) | |
6564 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
6565 | ||
6566 | out_freepage: | |
6567 | put_page(page); | |
6568 | if (err == -EACCES) | |
6569 | return -EPERM; | |
6570 | out: | |
6571 | return err; | |
6572 | } | |
1cab0652 BS |
6573 | |
6574 | static int _nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) | |
7d974794 BS |
6575 | { |
6576 | int status; | |
6577 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 6578 | .stateid = stateid, |
7d974794 BS |
6579 | }; |
6580 | struct nfs41_test_stateid_res res; | |
6581 | struct rpc_message msg = { | |
6582 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
6583 | .rpc_argp = &args, | |
6584 | .rpc_resp = &res, | |
6585 | }; | |
1cab0652 | 6586 | |
38527b15 | 6587 | dprintk("NFS call test_stateid %p\n", stateid); |
9d12b216 | 6588 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
8fe72bac TM |
6589 | nfs4_set_sequence_privileged(&args.seq_args); |
6590 | status = nfs4_call_sync_sequence(server->client, server, &msg, | |
6591 | &args.seq_args, &res.seq_res); | |
38527b15 CL |
6592 | if (status != NFS_OK) { |
6593 | dprintk("NFS reply test_stateid: failed, %d\n", status); | |
377e507d | 6594 | return status; |
38527b15 CL |
6595 | } |
6596 | dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status); | |
377e507d | 6597 | return -res.status; |
7d974794 BS |
6598 | } |
6599 | ||
38527b15 CL |
6600 | /** |
6601 | * nfs41_test_stateid - perform a TEST_STATEID operation | |
6602 | * | |
6603 | * @server: server / transport on which to perform the operation | |
6604 | * @stateid: state ID to test | |
6605 | * | |
6606 | * Returns NFS_OK if the server recognizes that "stateid" is valid. | |
6607 | * Otherwise a negative NFS4ERR value is returned if the operation | |
6608 | * failed or the state ID is not currently valid. | |
6609 | */ | |
1cab0652 | 6610 | static int nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
7d974794 BS |
6611 | { |
6612 | struct nfs4_exception exception = { }; | |
6613 | int err; | |
6614 | do { | |
377e507d CL |
6615 | err = _nfs41_test_stateid(server, stateid); |
6616 | if (err != -NFS4ERR_DELAY) | |
6617 | break; | |
6618 | nfs4_handle_exception(server, err, &exception); | |
7d974794 BS |
6619 | } while (exception.retry); |
6620 | return err; | |
6621 | } | |
9aeda35f | 6622 | |
1cab0652 | 6623 | static int _nfs4_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f | 6624 | { |
9aeda35f | 6625 | struct nfs41_free_stateid_args args = { |
1cab0652 | 6626 | .stateid = stateid, |
9aeda35f BS |
6627 | }; |
6628 | struct nfs41_free_stateid_res res; | |
6629 | struct rpc_message msg = { | |
6630 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
6631 | .rpc_argp = &args, | |
6632 | .rpc_resp = &res, | |
6633 | }; | |
38527b15 | 6634 | int status; |
9aeda35f | 6635 | |
38527b15 | 6636 | dprintk("NFS call free_stateid %p\n", stateid); |
9d12b216 | 6637 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
8fe72bac | 6638 | nfs4_set_sequence_privileged(&args.seq_args); |
38527b15 | 6639 | status = nfs4_call_sync_sequence(server->client, server, &msg, |
8fe72bac | 6640 | &args.seq_args, &res.seq_res); |
38527b15 CL |
6641 | dprintk("NFS reply free_stateid: %d\n", status); |
6642 | return status; | |
9aeda35f BS |
6643 | } |
6644 | ||
38527b15 CL |
6645 | /** |
6646 | * nfs41_free_stateid - perform a FREE_STATEID operation | |
6647 | * | |
6648 | * @server: server / transport on which to perform the operation | |
6649 | * @stateid: state ID to release | |
6650 | * | |
6651 | * Returns NFS_OK if the server freed "stateid". Otherwise a | |
6652 | * negative NFS4ERR value is returned. | |
6653 | */ | |
1cab0652 | 6654 | static int nfs41_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f BS |
6655 | { |
6656 | struct nfs4_exception exception = { }; | |
6657 | int err; | |
6658 | do { | |
377e507d CL |
6659 | err = _nfs4_free_stateid(server, stateid); |
6660 | if (err != -NFS4ERR_DELAY) | |
6661 | break; | |
6662 | nfs4_handle_exception(server, err, &exception); | |
9aeda35f BS |
6663 | } while (exception.retry); |
6664 | return err; | |
6665 | } | |
36281caa TM |
6666 | |
6667 | static bool nfs41_match_stateid(const nfs4_stateid *s1, | |
6668 | const nfs4_stateid *s2) | |
6669 | { | |
2d2f24ad | 6670 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
6671 | return false; |
6672 | ||
2d2f24ad | 6673 | if (s1->seqid == s2->seqid) |
36281caa | 6674 | return true; |
2d2f24ad | 6675 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
6676 | return true; |
6677 | ||
6678 | return false; | |
6679 | } | |
6680 | ||
557134a3 AA |
6681 | #endif /* CONFIG_NFS_V4_1 */ |
6682 | ||
36281caa TM |
6683 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
6684 | const nfs4_stateid *s2) | |
6685 | { | |
f597c537 | 6686 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
6687 | } |
6688 | ||
6689 | ||
17280175 | 6690 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 6691 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 6692 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
6693 | .recover_open = nfs4_open_reclaim, |
6694 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 6695 | .establish_clid = nfs4_init_clientid, |
90a16617 | 6696 | .get_clid_cred = nfs4_get_setclientid_cred, |
05f4c350 | 6697 | .detect_trunking = nfs40_discover_server_trunking, |
1da177e4 LT |
6698 | }; |
6699 | ||
591d71cb | 6700 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 6701 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
6702 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
6703 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
6704 | .recover_open = nfs4_open_reclaim, | |
6705 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 6706 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6707 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 6708 | .reclaim_complete = nfs41_proc_reclaim_complete, |
05f4c350 | 6709 | .detect_trunking = nfs41_discover_server_trunking, |
591d71cb AA |
6710 | }; |
6711 | #endif /* CONFIG_NFS_V4_1 */ | |
6712 | ||
17280175 | 6713 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
6714 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
6715 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
6716 | .recover_open = nfs4_open_expired, | |
6717 | .recover_lock = nfs4_lock_expired, | |
6718 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 6719 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
6720 | }; |
6721 | ||
6722 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 6723 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 6724 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 6725 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
6726 | .recover_open = nfs41_open_expired, |
6727 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 6728 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6729 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 6730 | }; |
591d71cb | 6731 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 6732 | |
17280175 | 6733 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 6734 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 6735 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 6736 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
6737 | }; |
6738 | ||
6739 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 6740 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 6741 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 6742 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 6743 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
6744 | }; |
6745 | #endif | |
6746 | ||
97dc1359 TM |
6747 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
6748 | .minor_version = 0, | |
6749 | .call_sync = _nfs4_call_sync, | |
36281caa | 6750 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 6751 | .find_root_sec = nfs4_find_root_sec, |
c48f4f35 TM |
6752 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
6753 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
6754 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
6755 | }; |
6756 | ||
6757 | #if defined(CONFIG_NFS_V4_1) | |
6758 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
6759 | .minor_version = 1, | |
104287cd | 6760 | .call_sync = nfs4_call_sync_sequence, |
36281caa | 6761 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 6762 | .find_root_sec = nfs41_find_root_sec, |
c48f4f35 TM |
6763 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
6764 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
6765 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
6766 | }; |
6767 | #endif | |
6768 | ||
97dc1359 TM |
6769 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
6770 | [0] = &nfs_v4_0_minor_ops, | |
6771 | #if defined(CONFIG_NFS_V4_1) | |
6772 | [1] = &nfs_v4_1_minor_ops, | |
6773 | #endif | |
6774 | }; | |
6775 | ||
73a79706 BS |
6776 | const struct inode_operations nfs4_dir_inode_operations = { |
6777 | .create = nfs_create, | |
6778 | .lookup = nfs_lookup, | |
6779 | .atomic_open = nfs_atomic_open, | |
6780 | .link = nfs_link, | |
6781 | .unlink = nfs_unlink, | |
6782 | .symlink = nfs_symlink, | |
6783 | .mkdir = nfs_mkdir, | |
6784 | .rmdir = nfs_rmdir, | |
6785 | .mknod = nfs_mknod, | |
6786 | .rename = nfs_rename, | |
6787 | .permission = nfs_permission, | |
6788 | .getattr = nfs_getattr, | |
6789 | .setattr = nfs_setattr, | |
6790 | .getxattr = generic_getxattr, | |
6791 | .setxattr = generic_setxattr, | |
6792 | .listxattr = generic_listxattr, | |
6793 | .removexattr = generic_removexattr, | |
6794 | }; | |
6795 | ||
92e1d5be | 6796 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
6797 | .permission = nfs_permission, |
6798 | .getattr = nfs_getattr, | |
6799 | .setattr = nfs_setattr, | |
64c2ce8b AK |
6800 | .getxattr = generic_getxattr, |
6801 | .setxattr = generic_setxattr, | |
6802 | .listxattr = generic_listxattr, | |
6803 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
6804 | }; |
6805 | ||
509de811 | 6806 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
6807 | .version = 4, /* protocol version */ |
6808 | .dentry_ops = &nfs4_dentry_operations, | |
6809 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 6810 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 6811 | .file_ops = &nfs4_file_operations, |
1da177e4 | 6812 | .getroot = nfs4_proc_get_root, |
281cad46 | 6813 | .submount = nfs4_submount, |
ff9099f2 | 6814 | .try_mount = nfs4_try_mount, |
1da177e4 LT |
6815 | .getattr = nfs4_proc_getattr, |
6816 | .setattr = nfs4_proc_setattr, | |
6817 | .lookup = nfs4_proc_lookup, | |
6818 | .access = nfs4_proc_access, | |
6819 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
6820 | .create = nfs4_proc_create, |
6821 | .remove = nfs4_proc_remove, | |
6822 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 6823 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 LT |
6824 | .unlink_done = nfs4_proc_unlink_done, |
6825 | .rename = nfs4_proc_rename, | |
d3d4152a | 6826 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 6827 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 6828 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
6829 | .link = nfs4_proc_link, |
6830 | .symlink = nfs4_proc_symlink, | |
6831 | .mkdir = nfs4_proc_mkdir, | |
6832 | .rmdir = nfs4_proc_remove, | |
6833 | .readdir = nfs4_proc_readdir, | |
6834 | .mknod = nfs4_proc_mknod, | |
6835 | .statfs = nfs4_proc_statfs, | |
6836 | .fsinfo = nfs4_proc_fsinfo, | |
6837 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 6838 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
6839 | .decode_dirent = nfs4_decode_dirent, |
6840 | .read_setup = nfs4_proc_read_setup, | |
1abb5088 | 6841 | .read_pageio_init = pnfs_pageio_init_read, |
ea7c3303 | 6842 | .read_rpc_prepare = nfs4_proc_read_rpc_prepare, |
ec06c096 | 6843 | .read_done = nfs4_read_done, |
1da177e4 | 6844 | .write_setup = nfs4_proc_write_setup, |
57208fa7 | 6845 | .write_pageio_init = pnfs_pageio_init_write, |
c6cb80d0 | 6846 | .write_rpc_prepare = nfs4_proc_write_rpc_prepare, |
788e7a89 | 6847 | .write_done = nfs4_write_done, |
1da177e4 | 6848 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 6849 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 6850 | .commit_done = nfs4_commit_done, |
1da177e4 | 6851 | .lock = nfs4_proc_lock, |
e50a1c2e | 6852 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 6853 | .close_context = nfs4_close_context, |
2b484297 | 6854 | .open_context = nfs4_atomic_open, |
011e2a7f | 6855 | .have_delegation = nfs4_have_delegation, |
57ec14c5 | 6856 | .return_delegation = nfs4_inode_return_delegation, |
6663ee7f | 6857 | .alloc_client = nfs4_alloc_client, |
45a52a02 | 6858 | .init_client = nfs4_init_client, |
cdb7eced | 6859 | .free_client = nfs4_free_client, |
1179acc6 BS |
6860 | .create_server = nfs4_create_server, |
6861 | .clone_server = nfs_clone_server, | |
1da177e4 LT |
6862 | }; |
6863 | ||
64c2ce8b AK |
6864 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
6865 | .prefix = XATTR_NAME_NFSV4_ACL, | |
6866 | .list = nfs4_xattr_list_nfs4_acl, | |
6867 | .get = nfs4_xattr_get_nfs4_acl, | |
6868 | .set = nfs4_xattr_set_nfs4_acl, | |
6869 | }; | |
6870 | ||
6871 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
6872 | &nfs4_xattr_nfs4_acl_handler, | |
6873 | NULL | |
6874 | }; | |
6875 | ||
1da177e4 LT |
6876 | /* |
6877 | * Local variables: | |
6878 | * c-basic-offset: 8 | |
6879 | * End: | |
6880 | */ |