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; | |
6e3cf241 TM |
110 | case -NFS4ERR_FILE_OPEN: |
111 | return -EBUSY; | |
52567b03 | 112 | default: |
1da177e4 | 113 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 114 | __func__, -err); |
52567b03 | 115 | break; |
1da177e4 | 116 | } |
52567b03 | 117 | return -EIO; |
1da177e4 LT |
118 | } |
119 | ||
120 | /* | |
121 | * This is our standard bitmap for GETATTR requests. | |
122 | */ | |
1549210f | 123 | const u32 nfs4_fattr_bitmap[3] = { |
1da177e4 LT |
124 | FATTR4_WORD0_TYPE |
125 | | FATTR4_WORD0_CHANGE | |
126 | | FATTR4_WORD0_SIZE | |
127 | | FATTR4_WORD0_FSID | |
128 | | FATTR4_WORD0_FILEID, | |
129 | FATTR4_WORD1_MODE | |
130 | | FATTR4_WORD1_NUMLINKS | |
131 | | FATTR4_WORD1_OWNER | |
132 | | FATTR4_WORD1_OWNER_GROUP | |
133 | | FATTR4_WORD1_RAWDEV | |
134 | | FATTR4_WORD1_SPACE_USED | |
135 | | FATTR4_WORD1_TIME_ACCESS | |
136 | | FATTR4_WORD1_TIME_METADATA | |
137 | | FATTR4_WORD1_TIME_MODIFY | |
138 | }; | |
139 | ||
1549210f TM |
140 | static const u32 nfs4_pnfs_open_bitmap[3] = { |
141 | FATTR4_WORD0_TYPE | |
142 | | FATTR4_WORD0_CHANGE | |
143 | | FATTR4_WORD0_SIZE | |
144 | | FATTR4_WORD0_FSID | |
145 | | FATTR4_WORD0_FILEID, | |
146 | FATTR4_WORD1_MODE | |
147 | | FATTR4_WORD1_NUMLINKS | |
148 | | FATTR4_WORD1_OWNER | |
149 | | FATTR4_WORD1_OWNER_GROUP | |
150 | | FATTR4_WORD1_RAWDEV | |
151 | | FATTR4_WORD1_SPACE_USED | |
152 | | FATTR4_WORD1_TIME_ACCESS | |
153 | | FATTR4_WORD1_TIME_METADATA | |
154 | | FATTR4_WORD1_TIME_MODIFY, | |
155 | FATTR4_WORD2_MDSTHRESHOLD | |
156 | }; | |
157 | ||
e23008ec AA |
158 | static const u32 nfs4_open_noattr_bitmap[3] = { |
159 | FATTR4_WORD0_TYPE | |
160 | | FATTR4_WORD0_CHANGE | |
161 | | FATTR4_WORD0_FILEID, | |
162 | }; | |
163 | ||
1da177e4 LT |
164 | const u32 nfs4_statfs_bitmap[2] = { |
165 | FATTR4_WORD0_FILES_AVAIL | |
166 | | FATTR4_WORD0_FILES_FREE | |
167 | | FATTR4_WORD0_FILES_TOTAL, | |
168 | FATTR4_WORD1_SPACE_AVAIL | |
169 | | FATTR4_WORD1_SPACE_FREE | |
170 | | FATTR4_WORD1_SPACE_TOTAL | |
171 | }; | |
172 | ||
4ce79717 | 173 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
174 | FATTR4_WORD0_MAXLINK |
175 | | FATTR4_WORD0_MAXNAME, | |
176 | 0 | |
177 | }; | |
178 | ||
dae100c2 | 179 | const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE |
1da177e4 LT |
180 | | FATTR4_WORD0_MAXREAD |
181 | | FATTR4_WORD0_MAXWRITE | |
182 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 183 | FATTR4_WORD1_TIME_DELTA |
dae100c2 FI |
184 | | FATTR4_WORD1_FS_LAYOUT_TYPES, |
185 | FATTR4_WORD2_LAYOUT_BLKSIZE | |
1da177e4 LT |
186 | }; |
187 | ||
830b8e33 MN |
188 | const u32 nfs4_fs_locations_bitmap[2] = { |
189 | FATTR4_WORD0_TYPE | |
190 | | FATTR4_WORD0_CHANGE | |
191 | | FATTR4_WORD0_SIZE | |
192 | | FATTR4_WORD0_FSID | |
193 | | FATTR4_WORD0_FILEID | |
194 | | FATTR4_WORD0_FS_LOCATIONS, | |
195 | FATTR4_WORD1_MODE | |
196 | | FATTR4_WORD1_NUMLINKS | |
197 | | FATTR4_WORD1_OWNER | |
198 | | FATTR4_WORD1_OWNER_GROUP | |
199 | | FATTR4_WORD1_RAWDEV | |
200 | | FATTR4_WORD1_SPACE_USED | |
201 | | FATTR4_WORD1_TIME_ACCESS | |
202 | | FATTR4_WORD1_TIME_METADATA | |
203 | | FATTR4_WORD1_TIME_MODIFY | |
204 | | FATTR4_WORD1_MOUNTED_ON_FILEID | |
205 | }; | |
206 | ||
bc4785cd | 207 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
208 | struct nfs4_readdir_arg *readdir) |
209 | { | |
0dbb4c67 | 210 | __be32 *start, *p; |
1da177e4 | 211 | |
1da177e4 | 212 | if (cookie > 2) { |
b7ef1956 | 213 | readdir->cookie = cookie; |
1da177e4 LT |
214 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
215 | return; | |
216 | } | |
217 | ||
218 | readdir->cookie = 0; | |
219 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
220 | if (cookie == 2) | |
221 | return; | |
222 | ||
223 | /* | |
224 | * NFSv4 servers do not return entries for '.' and '..' | |
225 | * Therefore, we fake these entries here. We let '.' | |
226 | * have cookie 0 and '..' have cookie 1. Note that | |
227 | * when talking to the server, we always send cookie 0 | |
228 | * instead of 1 or 2. | |
229 | */ | |
2b86ce2d | 230 | start = p = kmap_atomic(*readdir->pages); |
1da177e4 LT |
231 | |
232 | if (cookie == 0) { | |
233 | *p++ = xdr_one; /* next */ | |
234 | *p++ = xdr_zero; /* cookie, first word */ | |
235 | *p++ = xdr_one; /* cookie, second word */ | |
236 | *p++ = xdr_one; /* entry len */ | |
237 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
238 | p++; | |
239 | *p++ = xdr_one; /* bitmap length */ | |
240 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
241 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 242 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
243 | } |
244 | ||
245 | *p++ = xdr_one; /* next */ | |
246 | *p++ = xdr_zero; /* cookie, first word */ | |
247 | *p++ = xdr_two; /* cookie, second word */ | |
248 | *p++ = xdr_two; /* entry len */ | |
249 | memcpy(p, "..\0\0", 4); /* entry */ | |
250 | p++; | |
251 | *p++ = xdr_one; /* bitmap length */ | |
252 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
253 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 254 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
255 | |
256 | readdir->pgbase = (char *)p - (char *)start; | |
257 | readdir->count -= readdir->pgbase; | |
2b86ce2d | 258 | kunmap_atomic(start); |
1da177e4 LT |
259 | } |
260 | ||
65de872e TM |
261 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) |
262 | { | |
263 | int res = 0; | |
264 | ||
265 | might_sleep(); | |
266 | ||
267 | if (*timeout <= 0) | |
268 | *timeout = NFS4_POLL_RETRY_MIN; | |
269 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
270 | *timeout = NFS4_POLL_RETRY_MAX; | |
d310310c | 271 | freezable_schedule_timeout_killable(*timeout); |
65de872e TM |
272 | if (fatal_signal_pending(current)) |
273 | res = -ERESTARTSYS; | |
274 | *timeout <<= 1; | |
275 | return res; | |
276 | } | |
277 | ||
278 | /* This is the error handling routine for processes that are allowed | |
279 | * to sleep. | |
280 | */ | |
b064eca2 | 281 | static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
65de872e TM |
282 | { |
283 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 284 | struct nfs4_state *state = exception->state; |
3114ea7a | 285 | struct inode *inode = exception->inode; |
65de872e TM |
286 | int ret = errorcode; |
287 | ||
288 | exception->retry = 0; | |
289 | switch(errorcode) { | |
290 | case 0: | |
291 | return 0; | |
3114ea7a | 292 | case -NFS4ERR_OPENMODE: |
011e2a7f | 293 | if (inode && nfs4_have_delegation(inode, FMODE_READ)) { |
57ec14c5 | 294 | nfs4_inode_return_delegation(inode); |
3114ea7a TM |
295 | exception->retry = 1; |
296 | return 0; | |
297 | } | |
298 | if (state == NULL) | |
299 | break; | |
5d422301 TM |
300 | ret = nfs4_schedule_stateid_recovery(server, state); |
301 | if (ret < 0) | |
302 | break; | |
3114ea7a | 303 | goto wait_on_recovery; |
a1d0b5ee | 304 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
305 | case -NFS4ERR_ADMIN_REVOKED: |
306 | case -NFS4ERR_BAD_STATEID: | |
9e33bed5 TM |
307 | if (state == NULL) |
308 | break; | |
14977489 | 309 | nfs_remove_bad_delegation(state->inode); |
5d422301 TM |
310 | ret = nfs4_schedule_stateid_recovery(server, state); |
311 | if (ret < 0) | |
312 | break; | |
0400a6b0 | 313 | goto wait_on_recovery; |
0ced63d1 | 314 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
315 | if (state != NULL) { |
316 | ret = nfs4_schedule_stateid_recovery(server, state); | |
317 | if (ret < 0) | |
318 | break; | |
319 | } | |
65de872e | 320 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 321 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
322 | nfs4_schedule_lease_recovery(clp); |
323 | goto wait_on_recovery; | |
03391693 | 324 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
325 | case -NFS4ERR_BADSESSION: |
326 | case -NFS4ERR_BADSLOT: | |
327 | case -NFS4ERR_BAD_HIGH_SLOT: | |
328 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
329 | case -NFS4ERR_DEADSESSION: | |
330 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
331 | case -NFS4ERR_SEQ_MISORDERED: | |
332 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
333 | errorcode); | |
9f594791 | 334 | nfs4_schedule_session_recovery(clp->cl_session, errorcode); |
399f11c3 | 335 | goto wait_on_recovery; |
03391693 | 336 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 337 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
338 | if (exception->timeout > HZ) { |
339 | /* We have retried a decent amount, time to | |
340 | * fail | |
341 | */ | |
342 | ret = -EBUSY; | |
343 | break; | |
344 | } | |
65de872e TM |
345 | case -NFS4ERR_GRACE: |
346 | case -NFS4ERR_DELAY: | |
347 | ret = nfs4_delay(server->client, &exception->timeout); | |
348 | if (ret != 0) | |
349 | break; | |
a8a4ae3a | 350 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
351 | case -NFS4ERR_OLD_STATEID: |
352 | exception->retry = 1; | |
b064eca2 TM |
353 | break; |
354 | case -NFS4ERR_BADOWNER: | |
355 | /* The following works around a Linux server bug! */ | |
356 | case -NFS4ERR_BADNAME: | |
357 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
358 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
359 | exception->retry = 1; | |
360 | printk(KERN_WARNING "NFS: v4 server %s " | |
361 | "does not accept raw " | |
362 | "uid/gids. " | |
363 | "Reenabling the idmapper.\n", | |
364 | server->nfs_client->cl_hostname); | |
365 | } | |
65de872e TM |
366 | } |
367 | /* We failed to handle the error */ | |
368 | return nfs4_map_errors(ret); | |
0400a6b0 | 369 | wait_on_recovery: |
a2c0b9e2 TM |
370 | ret = nfs4_wait_clnt_recover(clp); |
371 | if (ret == 0) | |
372 | exception->retry = 1; | |
373 | return ret; | |
65de872e TM |
374 | } |
375 | ||
376 | ||
452e9352 | 377 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 378 | { |
1da177e4 LT |
379 | spin_lock(&clp->cl_lock); |
380 | if (time_before(clp->cl_last_renewal,timestamp)) | |
381 | clp->cl_last_renewal = timestamp; | |
382 | spin_unlock(&clp->cl_lock); | |
383 | } | |
384 | ||
452e9352 TM |
385 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
386 | { | |
387 | do_renew_lease(server->nfs_client, timestamp); | |
388 | } | |
389 | ||
cccef3b9 AA |
390 | #if defined(CONFIG_NFS_V4_1) |
391 | ||
d185a334 | 392 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 | 393 | { |
e3725ec0 | 394 | struct nfs4_session *session; |
13615871 | 395 | struct nfs4_slot_table *tbl; |
c10e4498 | 396 | bool send_new_highest_used_slotid = false; |
13615871 | 397 | |
dfb4f309 | 398 | if (!res->sr_slot) { |
13615871 AA |
399 | /* just wake up the next guy waiting since |
400 | * we may have not consumed a slot after all */ | |
691daf3b | 401 | dprintk("%s: No slot\n", __func__); |
35dc1d74 | 402 | return; |
13615871 | 403 | } |
e3725ec0 TM |
404 | tbl = res->sr_slot->table; |
405 | session = tbl->session; | |
ea028ac9 | 406 | |
35dc1d74 | 407 | spin_lock(&tbl->slot_tbl_lock); |
c10e4498 TM |
408 | /* Be nice to the server: try to ensure that the last transmitted |
409 | * value for highest_user_slotid <= target_highest_slotid | |
410 | */ | |
411 | if (tbl->highest_used_slotid > tbl->target_highest_slotid) | |
412 | send_new_highest_used_slotid = true; | |
413 | ||
b75ad4cd TM |
414 | if (nfs41_wake_and_assign_slot(tbl, res->sr_slot)) { |
415 | send_new_highest_used_slotid = false; | |
416 | goto out_unlock; | |
417 | } | |
f4af6e2a | 418 | nfs4_free_slot(tbl, res->sr_slot); |
c10e4498 TM |
419 | |
420 | if (tbl->highest_used_slotid != NFS4_NO_SLOT) | |
421 | send_new_highest_used_slotid = false; | |
b75ad4cd | 422 | out_unlock: |
35dc1d74 | 423 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 424 | res->sr_slot = NULL; |
c10e4498 TM |
425 | if (send_new_highest_used_slotid) |
426 | nfs41_server_notify_highest_slotid_update(session->clp); | |
13615871 AA |
427 | } |
428 | ||
14516c3a | 429 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c | 430 | { |
e3725ec0 | 431 | struct nfs4_session *session; |
933602e3 | 432 | struct nfs4_slot *slot; |
14516c3a | 433 | struct nfs_client *clp; |
ac20d163 | 434 | bool interrupted = false; |
85563073 | 435 | int ret = 1; |
b0df806c | 436 | |
468f8613 BS |
437 | /* don't increment the sequence number if the task wasn't sent */ |
438 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
439 | goto out; |
440 | ||
933602e3 | 441 | slot = res->sr_slot; |
e3725ec0 | 442 | session = slot->table->session; |
933602e3 | 443 | |
ac20d163 TM |
444 | if (slot->interrupted) { |
445 | slot->interrupted = 0; | |
446 | interrupted = true; | |
447 | } | |
448 | ||
691daf3b | 449 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
450 | switch (res->sr_status) { |
451 | case 0: | |
b0df806c | 452 | /* Update the slot's sequence and clientid lease timer */ |
933602e3 | 453 | ++slot->seq_nr; |
e3725ec0 | 454 | clp = session->clp; |
8e63b6a8 | 455 | do_renew_lease(clp, res->sr_timestamp); |
0629e370 | 456 | /* Check sequence flags */ |
b4410c2f TM |
457 | if (res->sr_status_flags != 0) |
458 | nfs4_schedule_lease_recovery(clp); | |
464ee9f9 | 459 | nfs41_update_target_slotid(slot->table, slot, res); |
14516c3a | 460 | break; |
ac20d163 TM |
461 | case 1: |
462 | /* | |
463 | * sr_status remains 1 if an RPC level error occurred. | |
464 | * The server may or may not have processed the sequence | |
465 | * operation.. | |
466 | * Mark the slot as having hosted an interrupted RPC call. | |
467 | */ | |
468 | slot->interrupted = 1; | |
469 | goto out; | |
14516c3a TM |
470 | case -NFS4ERR_DELAY: |
471 | /* The server detected a resend of the RPC call and | |
472 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
473 | * of RFC5661. | |
474 | */ | |
df2fabff | 475 | dprintk("%s: slot=%u seq=%u: Operation in progress\n", |
dfb4f309 | 476 | __func__, |
df2fabff | 477 | slot->slot_nr, |
933602e3 | 478 | slot->seq_nr); |
14516c3a | 479 | goto out_retry; |
85563073 TM |
480 | case -NFS4ERR_BADSLOT: |
481 | /* | |
482 | * The slot id we used was probably retired. Try again | |
483 | * using a different slot id. | |
484 | */ | |
e8794440 TM |
485 | goto retry_nowait; |
486 | case -NFS4ERR_SEQ_MISORDERED: | |
ac20d163 TM |
487 | /* |
488 | * Was the last operation on this sequence interrupted? | |
489 | * If so, retry after bumping the sequence number. | |
490 | */ | |
491 | if (interrupted) { | |
492 | ++slot->seq_nr; | |
493 | goto retry_nowait; | |
494 | } | |
e8794440 TM |
495 | /* |
496 | * Could this slot have been previously retired? | |
497 | * If so, then the server may be expecting seq_nr = 1! | |
498 | */ | |
8e63b6a8 TM |
499 | if (slot->seq_nr != 1) { |
500 | slot->seq_nr = 1; | |
501 | goto retry_nowait; | |
502 | } | |
503 | break; | |
e8794440 TM |
504 | case -NFS4ERR_SEQ_FALSE_RETRY: |
505 | ++slot->seq_nr; | |
506 | goto retry_nowait; | |
14516c3a TM |
507 | default: |
508 | /* Just update the slot sequence no. */ | |
933602e3 | 509 | ++slot->seq_nr; |
b0df806c AA |
510 | } |
511 | out: | |
512 | /* The session may be reset by one of the error handlers. */ | |
513 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 514 | nfs41_sequence_free_slot(res); |
85563073 | 515 | return ret; |
e8794440 TM |
516 | retry_nowait: |
517 | if (rpc_restart_call_prepare(task)) { | |
518 | task->tk_status = 0; | |
519 | ret = 0; | |
520 | } | |
521 | goto out; | |
14516c3a | 522 | out_retry: |
d05dd4e9 | 523 | if (!rpc_restart_call(task)) |
14516c3a TM |
524 | goto out; |
525 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
526 | return 0; | |
b0df806c AA |
527 | } |
528 | ||
14516c3a TM |
529 | static int nfs4_sequence_done(struct rpc_task *task, |
530 | struct nfs4_sequence_res *res) | |
df896455 | 531 | { |
e3725ec0 | 532 | if (res->sr_slot == NULL) |
14516c3a TM |
533 | return 1; |
534 | return nfs41_sequence_done(task, res); | |
df896455 TM |
535 | } |
536 | ||
9d12b216 TM |
537 | static void nfs41_init_sequence(struct nfs4_sequence_args *args, |
538 | struct nfs4_sequence_res *res, int cache_reply) | |
539 | { | |
2b2fa717 | 540 | args->sa_slot = NULL; |
9d12b216 | 541 | args->sa_cache_this = 0; |
8fe72bac | 542 | args->sa_privileged = 0; |
9d12b216 TM |
543 | if (cache_reply) |
544 | args->sa_cache_this = 1; | |
9d12b216 TM |
545 | res->sr_slot = NULL; |
546 | } | |
547 | ||
8fe72bac TM |
548 | static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args) |
549 | { | |
550 | args->sa_privileged = 1; | |
551 | } | |
552 | ||
dc70d7b3 | 553 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
554 | struct nfs4_sequence_args *args, |
555 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
556 | struct rpc_task *task) |
557 | { | |
fbcd4abc AA |
558 | struct nfs4_slot *slot; |
559 | struct nfs4_slot_table *tbl; | |
fbcd4abc AA |
560 | |
561 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 562 | /* slot already allocated? */ |
dfb4f309 | 563 | if (res->sr_slot != NULL) |
d9afbd1b | 564 | goto out_success; |
ce5039c1 | 565 | |
fbcd4abc AA |
566 | tbl = &session->fc_slot_table; |
567 | ||
69d206b5 TM |
568 | task->tk_timeout = 0; |
569 | ||
fbcd4abc | 570 | spin_lock(&tbl->slot_tbl_lock); |
a2118c33 | 571 | if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) && |
8fe72bac | 572 | !args->sa_privileged) { |
0b1c8fc4 | 573 | /* The state manager will wait until the slot table is empty */ |
0b1c8fc4 | 574 | dprintk("%s session is draining\n", __func__); |
7b939a3f | 575 | goto out_sleep; |
689cf5c1 AB |
576 | } |
577 | ||
2dc03b7f | 578 | slot = nfs4_alloc_slot(tbl); |
69d206b5 TM |
579 | if (IS_ERR(slot)) { |
580 | /* If out of memory, try again in 1/4 second */ | |
581 | if (slot == ERR_PTR(-ENOMEM)) | |
582 | task->tk_timeout = HZ >> 2; | |
fbcd4abc | 583 | dprintk("<-- %s: no free slots\n", __func__); |
7b939a3f | 584 | goto out_sleep; |
fbcd4abc AA |
585 | } |
586 | spin_unlock(&tbl->slot_tbl_lock); | |
587 | ||
2b2fa717 | 588 | args->sa_slot = slot; |
fbcd4abc | 589 | |
2dc03b7f TM |
590 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, |
591 | slot->slot_nr, slot->seq_nr); | |
fbcd4abc | 592 | |
dfb4f309 | 593 | res->sr_slot = slot; |
8e63b6a8 | 594 | res->sr_timestamp = jiffies; |
2a6e26cd | 595 | res->sr_status_flags = 0; |
fbcd4abc AA |
596 | /* |
597 | * sr_status is only set in decode_sequence, and so will remain | |
598 | * set to 1 if an rpc level failure occurs. | |
599 | */ | |
600 | res->sr_status = 1; | |
d9afbd1b TM |
601 | out_success: |
602 | rpc_call_start(task); | |
ce5039c1 | 603 | return 0; |
7b939a3f | 604 | out_sleep: |
8fe72bac TM |
605 | /* Privileged tasks are queued with top priority */ |
606 | if (args->sa_privileged) | |
1e1093c7 TM |
607 | rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, |
608 | NULL, RPC_PRIORITY_PRIVILEGED); | |
609 | else | |
610 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
7b939a3f TM |
611 | spin_unlock(&tbl->slot_tbl_lock); |
612 | return -EAGAIN; | |
ce5039c1 | 613 | } |
dc70d7b3 | 614 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 615 | |
035168ab | 616 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
617 | struct nfs4_sequence_args *args, |
618 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
619 | struct rpc_task *task) |
620 | { | |
035168ab | 621 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
622 | int ret = 0; |
623 | ||
d9afbd1b TM |
624 | if (session == NULL) { |
625 | rpc_call_start(task); | |
035168ab | 626 | goto out; |
d9afbd1b | 627 | } |
035168ab | 628 | |
df2fabff | 629 | dprintk("--> %s clp %p session %p sr_slot %d\n", |
dfb4f309 | 630 | __func__, session->clp, session, res->sr_slot ? |
df2fabff | 631 | res->sr_slot->slot_nr : -1); |
ce5039c1 | 632 | |
9d12b216 | 633 | ret = nfs41_setup_sequence(session, args, res, task); |
ce5039c1 AA |
634 | out: |
635 | dprintk("<-- %s status=%d\n", __func__, ret); | |
636 | return ret; | |
637 | } | |
638 | ||
639 | struct nfs41_call_sync_data { | |
035168ab | 640 | const struct nfs_server *seq_server; |
ce5039c1 AA |
641 | struct nfs4_sequence_args *seq_args; |
642 | struct nfs4_sequence_res *seq_res; | |
ce5039c1 AA |
643 | }; |
644 | ||
645 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
646 | { | |
647 | struct nfs41_call_sync_data *data = calldata; | |
6ba7db34 | 648 | struct nfs4_session *session = nfs4_get_session(data->seq_server); |
ce5039c1 | 649 | |
035168ab TM |
650 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
651 | ||
d9afbd1b | 652 | nfs41_setup_sequence(session, data->seq_args, data->seq_res, task); |
ce5039c1 AA |
653 | } |
654 | ||
69ab40c4 AA |
655 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
656 | { | |
657 | struct nfs41_call_sync_data *data = calldata; | |
658 | ||
14516c3a | 659 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
660 | } |
661 | ||
17280175 | 662 | static const struct rpc_call_ops nfs41_call_sync_ops = { |
ce5039c1 | 663 | .rpc_call_prepare = nfs41_call_sync_prepare, |
69ab40c4 | 664 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
665 | }; |
666 | ||
7c513058 BS |
667 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
668 | struct nfs_server *server, | |
ce5039c1 AA |
669 | struct rpc_message *msg, |
670 | struct nfs4_sequence_args *args, | |
8fe72bac | 671 | struct nfs4_sequence_res *res) |
ce5039c1 AA |
672 | { |
673 | int ret; | |
674 | struct rpc_task *task; | |
675 | struct nfs41_call_sync_data data = { | |
035168ab | 676 | .seq_server = server, |
ce5039c1 AA |
677 | .seq_args = args, |
678 | .seq_res = res, | |
ce5039c1 AA |
679 | }; |
680 | struct rpc_task_setup task_setup = { | |
7c513058 | 681 | .rpc_client = clnt, |
ce5039c1 AA |
682 | .rpc_message = msg, |
683 | .callback_ops = &nfs41_call_sync_ops, | |
684 | .callback_data = &data | |
685 | }; | |
686 | ||
ce5039c1 AA |
687 | task = rpc_run_task(&task_setup); |
688 | if (IS_ERR(task)) | |
689 | ret = PTR_ERR(task); | |
690 | else { | |
691 | ret = task->tk_status; | |
692 | rpc_put_task(task); | |
693 | } | |
694 | return ret; | |
695 | } | |
696 | ||
df896455 | 697 | #else |
8fe72bac | 698 | static |
9d12b216 TM |
699 | void nfs41_init_sequence(struct nfs4_sequence_args *args, |
700 | struct nfs4_sequence_res *res, int cache_reply) | |
701 | { | |
702 | } | |
703 | ||
8fe72bac TM |
704 | static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args) |
705 | { | |
706 | } | |
707 | ||
708 | ||
14516c3a TM |
709 | static int nfs4_sequence_done(struct rpc_task *task, |
710 | struct nfs4_sequence_res *res) | |
df896455 | 711 | { |
14516c3a | 712 | return 1; |
df896455 | 713 | } |
cccef3b9 AA |
714 | #endif /* CONFIG_NFS_V4_1 */ |
715 | ||
fd0c0953 | 716 | static |
7c513058 BS |
717 | int _nfs4_call_sync(struct rpc_clnt *clnt, |
718 | struct nfs_server *server, | |
cccef3b9 AA |
719 | struct rpc_message *msg, |
720 | struct nfs4_sequence_args *args, | |
fd0c0953 | 721 | struct nfs4_sequence_res *res) |
cccef3b9 | 722 | { |
7c513058 | 723 | return rpc_call_sync(clnt, msg, 0); |
cccef3b9 AA |
724 | } |
725 | ||
fd0c0953 | 726 | static |
7c513058 BS |
727 | int nfs4_call_sync(struct rpc_clnt *clnt, |
728 | struct nfs_server *server, | |
e73b83f2 BS |
729 | struct rpc_message *msg, |
730 | struct nfs4_sequence_args *args, | |
731 | struct nfs4_sequence_res *res, | |
732 | int cache_reply) | |
733 | { | |
fd0c0953 | 734 | nfs41_init_sequence(args, res, cache_reply); |
7c513058 | 735 | return server->nfs_client->cl_mvops->call_sync(clnt, server, msg, |
fd0c0953 | 736 | args, res); |
e73b83f2 | 737 | } |
cccef3b9 | 738 | |
38478b24 | 739 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 740 | { |
38478b24 | 741 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 742 | |
38478b24 | 743 | spin_lock(&dir->i_lock); |
359d7d1c | 744 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA; |
a9a4a87a | 745 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 746 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 747 | dir->i_version = cinfo->after; |
de242c0b | 748 | nfs_fscache_invalidate(dir); |
38478b24 | 749 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
750 | } |
751 | ||
e56e0b78 | 752 | struct nfs4_opendata { |
c6d00e63 | 753 | struct kref kref; |
e56e0b78 TM |
754 | struct nfs_openargs o_arg; |
755 | struct nfs_openres o_res; | |
cdd4e68b TM |
756 | struct nfs_open_confirmargs c_arg; |
757 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
758 | struct nfs4_string owner_name; |
759 | struct nfs4_string group_name; | |
e56e0b78 | 760 | struct nfs_fattr f_attr; |
e56e0b78 | 761 | struct dentry *dir; |
82a2c1b7 | 762 | struct dentry *dentry; |
e56e0b78 | 763 | struct nfs4_state_owner *owner; |
aac00a8d | 764 | struct nfs4_state *state; |
e56e0b78 | 765 | struct iattr attrs; |
26e976a8 | 766 | unsigned long timestamp; |
3e309914 | 767 | unsigned int rpc_done : 1; |
24ac23ab TM |
768 | int rpc_status; |
769 | int cancelled; | |
e56e0b78 TM |
770 | }; |
771 | ||
49f9a0fa TM |
772 | static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server *server, |
773 | int err, struct nfs4_exception *exception) | |
774 | { | |
775 | if (err != -EINVAL) | |
776 | return false; | |
777 | if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1)) | |
778 | return false; | |
779 | server->caps &= ~NFS_CAP_ATOMIC_OPEN_V1; | |
780 | exception->retry = 1; | |
781 | return true; | |
782 | } | |
783 | ||
784 | static enum open_claim_type4 | |
785 | nfs4_map_atomic_open_claim(struct nfs_server *server, | |
786 | enum open_claim_type4 claim) | |
787 | { | |
788 | if (server->caps & NFS_CAP_ATOMIC_OPEN_V1) | |
789 | return claim; | |
790 | switch (claim) { | |
791 | default: | |
792 | return claim; | |
793 | case NFS4_OPEN_CLAIM_FH: | |
794 | return NFS4_OPEN_CLAIM_NULL; | |
795 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
796 | return NFS4_OPEN_CLAIM_DELEGATE_CUR; | |
797 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
798 | return NFS4_OPEN_CLAIM_DELEGATE_PREV; | |
799 | } | |
800 | } | |
2ced46c2 TM |
801 | |
802 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
803 | { | |
804 | p->o_res.f_attr = &p->f_attr; | |
c1d51931 TM |
805 | p->o_res.seqid = p->o_arg.seqid; |
806 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 | 807 | p->o_res.server = p->o_arg.server; |
5f657530 | 808 | p->o_res.access_request = p->o_arg.access; |
2ced46c2 | 809 | nfs_fattr_init(&p->f_attr); |
6926afd1 | 810 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
811 | } |
812 | ||
82a2c1b7 | 813 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 814 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be | 815 | const struct iattr *attrs, |
4a1c0893 | 816 | enum open_claim_type4 claim, |
8535b2be | 817 | gfp_t gfp_mask) |
e56e0b78 | 818 | { |
82a2c1b7 | 819 | struct dentry *parent = dget_parent(dentry); |
e56e0b78 TM |
820 | struct inode *dir = parent->d_inode; |
821 | struct nfs_server *server = NFS_SERVER(dir); | |
822 | struct nfs4_opendata *p; | |
823 | ||
8535b2be | 824 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
825 | if (p == NULL) |
826 | goto err; | |
8535b2be | 827 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 TM |
828 | if (p->o_arg.seqid == NULL) |
829 | goto err_free; | |
82a2c1b7 AV |
830 | nfs_sb_active(dentry->d_sb); |
831 | p->dentry = dget(dentry); | |
e56e0b78 TM |
832 | p->dir = parent; |
833 | p->owner = sp; | |
834 | atomic_inc(&sp->so_count); | |
dc0b027d TM |
835 | p->o_arg.open_flags = flags; |
836 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
ae2bb032 WAA |
837 | /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS |
838 | * will return permission denied for all bits until close */ | |
839 | if (!(flags & O_EXCL)) { | |
840 | /* ask server to check for all possible rights as results | |
841 | * are cached */ | |
842 | p->o_arg.access = NFS4_ACCESS_READ | NFS4_ACCESS_MODIFY | | |
843 | NFS4_ACCESS_EXTEND | NFS4_ACCESS_EXECUTE; | |
ae2bb032 | 844 | } |
7539bbab | 845 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
95b72eb0 TM |
846 | p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time); |
847 | p->o_arg.id.uniquifier = sp->so_seqid.owner_id; | |
82a2c1b7 | 848 | p->o_arg.name = &dentry->d_name; |
e56e0b78 TM |
849 | p->o_arg.server = server; |
850 | p->o_arg.bitmask = server->attr_bitmask; | |
1549210f | 851 | p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0]; |
49f9a0fa TM |
852 | p->o_arg.claim = nfs4_map_atomic_open_claim(server, claim); |
853 | switch (p->o_arg.claim) { | |
4a1c0893 TM |
854 | case NFS4_OPEN_CLAIM_NULL: |
855 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
856 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
857 | p->o_arg.fh = NFS_FH(dir); | |
858 | break; | |
859 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
860 | case NFS4_OPEN_CLAIM_FH: | |
861 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
862 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
863 | p->o_arg.fh = NFS_FH(dentry->d_inode); | |
864 | } | |
536e43d1 | 865 | if (attrs != NULL && attrs->ia_valid != 0) { |
cd93710e | 866 | __be32 verf[2]; |
d77d76ff | 867 | |
e56e0b78 TM |
868 | p->o_arg.u.attrs = &p->attrs; |
869 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
cd93710e CL |
870 | |
871 | verf[0] = jiffies; | |
872 | verf[1] = current->pid; | |
873 | memcpy(p->o_arg.u.verifier.data, verf, | |
874 | sizeof(p->o_arg.u.verifier.data)); | |
e56e0b78 | 875 | } |
cdd4e68b TM |
876 | p->c_arg.fh = &p->o_res.fh; |
877 | p->c_arg.stateid = &p->o_res.stateid; | |
878 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 879 | nfs4_init_opendata_res(p); |
c6d00e63 | 880 | kref_init(&p->kref); |
e56e0b78 TM |
881 | return p; |
882 | err_free: | |
883 | kfree(p); | |
884 | err: | |
885 | dput(parent); | |
886 | return NULL; | |
887 | } | |
888 | ||
c6d00e63 | 889 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 890 | { |
c6d00e63 TM |
891 | struct nfs4_opendata *p = container_of(kref, |
892 | struct nfs4_opendata, kref); | |
82a2c1b7 | 893 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
894 | |
895 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
896 | if (p->state != NULL) |
897 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
898 | nfs4_put_state_owner(p->owner); |
899 | dput(p->dir); | |
82a2c1b7 AV |
900 | dput(p->dentry); |
901 | nfs_sb_deactive(sb); | |
6926afd1 | 902 | nfs_fattr_free_names(&p->f_attr); |
c6d00e63 TM |
903 | kfree(p); |
904 | } | |
905 | ||
906 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
907 | { | |
908 | if (p != NULL) | |
909 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
910 | } |
911 | ||
06f814a3 TM |
912 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
913 | { | |
06f814a3 TM |
914 | int ret; |
915 | ||
06f814a3 | 916 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
917 | return ret; |
918 | } | |
919 | ||
dc0b027d | 920 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
921 | { |
922 | int ret = 0; | |
dc0b027d | 923 | |
536e43d1 | 924 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
925 | goto out; |
926 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 927 | case FMODE_READ: |
88069f77 TM |
928 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
929 | && state->n_rdonly != 0; | |
6ee41268 TM |
930 | break; |
931 | case FMODE_WRITE: | |
88069f77 TM |
932 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
933 | && state->n_wronly != 0; | |
6ee41268 TM |
934 | break; |
935 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
936 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
937 | && state->n_rdwr != 0; | |
6ee41268 | 938 | } |
dc0b027d | 939 | out: |
6ee41268 TM |
940 | return ret; |
941 | } | |
942 | ||
dc0b027d | 943 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 944 | { |
652f89f6 TM |
945 | if (delegation == NULL) |
946 | return 0; | |
dc0b027d | 947 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 948 | return 0; |
15c831bf | 949 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 950 | return 0; |
d25be546 TM |
951 | if (test_bit(NFS_DELEGATION_RETURNING, &delegation->flags)) |
952 | return 0; | |
b7391f44 | 953 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
954 | return 1; |
955 | } | |
956 | ||
dc0b027d | 957 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 958 | { |
dc0b027d | 959 | switch (fmode) { |
e7616923 TM |
960 | case FMODE_WRITE: |
961 | state->n_wronly++; | |
962 | break; | |
963 | case FMODE_READ: | |
964 | state->n_rdonly++; | |
965 | break; | |
966 | case FMODE_READ|FMODE_WRITE: | |
967 | state->n_rdwr++; | |
968 | } | |
dc0b027d | 969 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
970 | } |
971 | ||
dc0b027d | 972 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
973 | { |
974 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
f597c537 TM |
975 | nfs4_stateid_copy(&state->stateid, stateid); |
976 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
dc0b027d | 977 | switch (fmode) { |
003707c7 TM |
978 | case FMODE_READ: |
979 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
980 | break; | |
981 | case FMODE_WRITE: | |
982 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
983 | break; | |
984 | case FMODE_READ|FMODE_WRITE: | |
985 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
986 | } | |
e7616923 TM |
987 | } |
988 | ||
dc0b027d | 989 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 990 | { |
8bda4e4c | 991 | write_seqlock(&state->seqlock); |
dc0b027d | 992 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 993 | write_sequnlock(&state->seqlock); |
003707c7 TM |
994 | } |
995 | ||
dc0b027d | 996 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 997 | { |
8bda4e4c TM |
998 | /* |
999 | * Protect the call to nfs4_state_set_mode_locked and | |
1000 | * serialise the stateid update | |
1001 | */ | |
1002 | write_seqlock(&state->seqlock); | |
003707c7 | 1003 | if (deleg_stateid != NULL) { |
f597c537 | 1004 | nfs4_stateid_copy(&state->stateid, deleg_stateid); |
003707c7 TM |
1005 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
1006 | } | |
1007 | if (open_stateid != NULL) | |
dc0b027d | 1008 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
1009 | write_sequnlock(&state->seqlock); |
1010 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 1011 | update_open_stateflags(state, fmode); |
ec073428 | 1012 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
1013 | } |
1014 | ||
dc0b027d | 1015 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
1016 | { |
1017 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1018 | struct nfs_delegation *deleg_cur; | |
1019 | int ret = 0; | |
1020 | ||
dc0b027d | 1021 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
1022 | |
1023 | rcu_read_lock(); | |
1024 | deleg_cur = rcu_dereference(nfsi->delegation); | |
1025 | if (deleg_cur == NULL) | |
1026 | goto no_delegation; | |
1027 | ||
1028 | spin_lock(&deleg_cur->lock); | |
1029 | if (nfsi->delegation != deleg_cur || | |
d25be546 | 1030 | test_bit(NFS_DELEGATION_RETURNING, &deleg_cur->flags) || |
dc0b027d | 1031 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
1032 | goto no_delegation_unlock; |
1033 | ||
1034 | if (delegation == NULL) | |
1035 | delegation = &deleg_cur->stateid; | |
f597c537 | 1036 | else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) |
34310430 TM |
1037 | goto no_delegation_unlock; |
1038 | ||
b7391f44 | 1039 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 1040 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
1041 | ret = 1; |
1042 | no_delegation_unlock: | |
1043 | spin_unlock(&deleg_cur->lock); | |
1044 | no_delegation: | |
1045 | rcu_read_unlock(); | |
1046 | ||
1047 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 1048 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
1049 | ret = 1; |
1050 | } | |
1051 | ||
1052 | return ret; | |
1053 | } | |
1054 | ||
1055 | ||
dc0b027d | 1056 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1057 | { |
1058 | struct nfs_delegation *delegation; | |
1059 | ||
1060 | rcu_read_lock(); | |
1061 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1062 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1063 | rcu_read_unlock(); |
1064 | return; | |
1065 | } | |
1066 | rcu_read_unlock(); | |
57ec14c5 | 1067 | nfs4_inode_return_delegation(inode); |
aac00a8d TM |
1068 | } |
1069 | ||
6ee41268 | 1070 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1071 | { |
1072 | struct nfs4_state *state = opendata->state; | |
1073 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1074 | struct nfs_delegation *delegation; | |
536e43d1 | 1075 | int open_mode = opendata->o_arg.open_flags & (O_EXCL|O_TRUNC); |
dc0b027d | 1076 | fmode_t fmode = opendata->o_arg.fmode; |
aac00a8d TM |
1077 | nfs4_stateid stateid; |
1078 | int ret = -EAGAIN; | |
1079 | ||
aac00a8d | 1080 | for (;;) { |
dc0b027d | 1081 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 1082 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
1083 | if (can_open_cached(state, fmode, open_mode)) { |
1084 | update_open_stateflags(state, fmode); | |
6ee41268 | 1085 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
1086 | goto out_return_state; |
1087 | } | |
1088 | spin_unlock(&state->owner->so_lock); | |
1089 | } | |
34310430 TM |
1090 | rcu_read_lock(); |
1091 | delegation = rcu_dereference(nfsi->delegation); | |
652f89f6 | 1092 | if (!can_open_delegated(delegation, fmode)) { |
34310430 | 1093 | rcu_read_unlock(); |
aac00a8d | 1094 | break; |
34310430 | 1095 | } |
aac00a8d | 1096 | /* Save the delegation */ |
f597c537 | 1097 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1098 | rcu_read_unlock(); |
af22f94a | 1099 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
1100 | if (ret != 0) |
1101 | goto out; | |
1102 | ret = -EAGAIN; | |
34310430 TM |
1103 | |
1104 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1105 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1106 | goto out_return_state; |
aac00a8d | 1107 | } |
aac00a8d TM |
1108 | out: |
1109 | return ERR_PTR(ret); | |
1110 | out_return_state: | |
1111 | atomic_inc(&state->count); | |
1112 | return state; | |
1113 | } | |
1114 | ||
e23008ec AA |
1115 | static void |
1116 | nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state) | |
1117 | { | |
1118 | struct nfs_client *clp = NFS_SERVER(state->inode)->nfs_client; | |
1119 | struct nfs_delegation *delegation; | |
1120 | int delegation_flags = 0; | |
1121 | ||
1122 | rcu_read_lock(); | |
1123 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
1124 | if (delegation) | |
1125 | delegation_flags = delegation->flags; | |
1126 | rcu_read_unlock(); | |
1127 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) { | |
1128 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " | |
1129 | "returning a delegation for " | |
1130 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
1131 | clp->cl_hostname); | |
1132 | } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) | |
1133 | nfs_inode_set_delegation(state->inode, | |
1134 | data->owner->so_cred, | |
1135 | &data->o_res); | |
1136 | else | |
1137 | nfs_inode_reclaim_delegation(state->inode, | |
1138 | data->owner->so_cred, | |
1139 | &data->o_res); | |
1140 | } | |
1141 | ||
1142 | /* | |
1143 | * Check the inode attributes against the CLAIM_PREVIOUS returned attributes | |
1144 | * and update the nfs4_state. | |
1145 | */ | |
1146 | static struct nfs4_state * | |
1147 | _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data) | |
1148 | { | |
1149 | struct inode *inode = data->state->inode; | |
1150 | struct nfs4_state *state = data->state; | |
1151 | int ret; | |
1152 | ||
1153 | if (!data->rpc_done) { | |
1154 | ret = data->rpc_status; | |
1155 | goto err; | |
1156 | } | |
1157 | ||
1158 | ret = -ESTALE; | |
1159 | if (!(data->f_attr.valid & NFS_ATTR_FATTR_TYPE) || | |
1160 | !(data->f_attr.valid & NFS_ATTR_FATTR_FILEID) || | |
1161 | !(data->f_attr.valid & NFS_ATTR_FATTR_CHANGE)) | |
1162 | goto err; | |
1163 | ||
1164 | ret = -ENOMEM; | |
1165 | state = nfs4_get_open_state(inode, data->owner); | |
1166 | if (state == NULL) | |
1167 | goto err; | |
1168 | ||
1169 | ret = nfs_refresh_inode(inode, &data->f_attr); | |
1170 | if (ret) | |
1171 | goto err; | |
1172 | ||
1173 | if (data->o_res.delegation_type != 0) | |
1174 | nfs4_opendata_check_deleg(data, state); | |
1175 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
1176 | data->o_arg.fmode); | |
1177 | ||
1178 | return state; | |
1179 | err: | |
1180 | return ERR_PTR(ret); | |
1181 | ||
1182 | } | |
1183 | ||
1184 | static struct nfs4_state * | |
1185 | _nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
24ac23ab TM |
1186 | { |
1187 | struct inode *inode; | |
1188 | struct nfs4_state *state = NULL; | |
1b370bc2 | 1189 | int ret; |
24ac23ab | 1190 | |
aac00a8d | 1191 | if (!data->rpc_done) { |
6ee41268 | 1192 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1193 | goto out; |
1194 | } | |
1195 | ||
1b370bc2 | 1196 | ret = -EAGAIN; |
24ac23ab | 1197 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1198 | goto err; |
24ac23ab | 1199 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 1200 | ret = PTR_ERR(inode); |
03f28e3a | 1201 | if (IS_ERR(inode)) |
1b370bc2 TM |
1202 | goto err; |
1203 | ret = -ENOMEM; | |
24ac23ab TM |
1204 | state = nfs4_get_open_state(inode, data->owner); |
1205 | if (state == NULL) | |
1b370bc2 | 1206 | goto err_put_inode; |
e23008ec AA |
1207 | if (data->o_res.delegation_type != 0) |
1208 | nfs4_opendata_check_deleg(data, state); | |
34310430 | 1209 | update_open_stateid(state, &data->o_res.stateid, NULL, |
dc0b027d | 1210 | data->o_arg.fmode); |
24ac23ab | 1211 | iput(inode); |
aac00a8d | 1212 | out: |
7aa262b5 | 1213 | nfs_release_seqid(data->o_arg.seqid); |
24ac23ab | 1214 | return state; |
1b370bc2 TM |
1215 | err_put_inode: |
1216 | iput(inode); | |
1217 | err: | |
1218 | return ERR_PTR(ret); | |
24ac23ab TM |
1219 | } |
1220 | ||
e23008ec AA |
1221 | static struct nfs4_state * |
1222 | nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
1223 | { | |
1224 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) | |
1225 | return _nfs4_opendata_reclaim_to_nfs4_state(data); | |
1226 | return _nfs4_opendata_to_nfs4_state(data); | |
1227 | } | |
1228 | ||
864472e9 TM |
1229 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1230 | { | |
1231 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1232 | struct nfs_open_context *ctx; | |
1233 | ||
1234 | spin_lock(&state->inode->i_lock); | |
1235 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1236 | if (ctx->state != state) | |
1237 | continue; | |
1238 | get_nfs_open_context(ctx); | |
1239 | spin_unlock(&state->inode->i_lock); | |
1240 | return ctx; | |
1241 | } | |
1242 | spin_unlock(&state->inode->i_lock); | |
1243 | return ERR_PTR(-ENOENT); | |
1244 | } | |
1245 | ||
4a1c0893 TM |
1246 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, |
1247 | struct nfs4_state *state, enum open_claim_type4 claim) | |
6f220ed5 TM |
1248 | { |
1249 | struct nfs4_opendata *opendata; | |
1250 | ||
4a1c0893 TM |
1251 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, |
1252 | NULL, claim, GFP_NOFS); | |
6f220ed5 TM |
1253 | if (opendata == NULL) |
1254 | return ERR_PTR(-ENOMEM); | |
1255 | opendata->state = state; | |
1256 | atomic_inc(&state->count); | |
1257 | return opendata; | |
1258 | } | |
1259 | ||
dc0b027d | 1260 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1261 | { |
2ced46c2 | 1262 | struct nfs4_state *newstate; |
864472e9 TM |
1263 | int ret; |
1264 | ||
dc0b027d TM |
1265 | opendata->o_arg.open_flags = 0; |
1266 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1267 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1268 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1269 | nfs4_init_opendata_res(opendata); | |
b257957e | 1270 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1271 | if (ret != 0) |
1272 | return ret; | |
2ced46c2 | 1273 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1274 | if (IS_ERR(newstate)) |
1275 | return PTR_ERR(newstate); | |
643168c2 | 1276 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1277 | *res = newstate; |
864472e9 TM |
1278 | return 0; |
1279 | } | |
1280 | ||
1281 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1282 | { | |
864472e9 | 1283 | struct nfs4_state *newstate; |
864472e9 TM |
1284 | int ret; |
1285 | ||
1286 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1287 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
1288 | smp_rmb(); |
1289 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1290 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1291 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1292 | if (ret != 0) |
1293 | return ret; | |
2ced46c2 TM |
1294 | if (newstate != state) |
1295 | return -ESTALE; | |
864472e9 TM |
1296 | } |
1297 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1298 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1299 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1300 | if (ret != 0) |
1301 | return ret; | |
2ced46c2 TM |
1302 | if (newstate != state) |
1303 | return -ESTALE; | |
864472e9 TM |
1304 | } |
1305 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1306 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1307 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1308 | if (ret != 0) |
1309 | return ret; | |
2ced46c2 TM |
1310 | if (newstate != state) |
1311 | return -ESTALE; | |
864472e9 | 1312 | } |
1ac7e2fd TM |
1313 | /* |
1314 | * We may have performed cached opens for all three recoveries. | |
1315 | * Check if we need to update the current stateid. | |
1316 | */ | |
1317 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 1318 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 1319 | write_seqlock(&state->seqlock); |
1ac7e2fd | 1320 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 1321 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 1322 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1323 | } |
864472e9 TM |
1324 | return 0; |
1325 | } | |
1326 | ||
1da177e4 LT |
1327 | /* |
1328 | * OPEN_RECLAIM: | |
1329 | * reclaim state on the server after a reboot. | |
1da177e4 | 1330 | */ |
539cd03a | 1331 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1332 | { |
1ac7e2fd | 1333 | struct nfs_delegation *delegation; |
864472e9 | 1334 | struct nfs4_opendata *opendata; |
dc0b027d | 1335 | fmode_t delegation_type = 0; |
1da177e4 LT |
1336 | int status; |
1337 | ||
4a1c0893 TM |
1338 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
1339 | NFS4_OPEN_CLAIM_PREVIOUS); | |
6f220ed5 TM |
1340 | if (IS_ERR(opendata)) |
1341 | return PTR_ERR(opendata); | |
1ac7e2fd TM |
1342 | rcu_read_lock(); |
1343 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1344 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1345 | delegation_type = delegation->type; |
1ac7e2fd | 1346 | rcu_read_unlock(); |
864472e9 TM |
1347 | opendata->o_arg.u.delegation_type = delegation_type; |
1348 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1349 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1350 | return status; |
1351 | } | |
1352 | ||
539cd03a | 1353 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1354 | { |
1355 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1356 | struct nfs4_exception exception = { }; | |
1357 | int err; | |
1358 | do { | |
539cd03a | 1359 | err = _nfs4_do_open_reclaim(ctx, state); |
49f9a0fa TM |
1360 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
1361 | continue; | |
168667c4 | 1362 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1363 | break; |
1364 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1365 | } while (exception.retry); |
1366 | return err; | |
1367 | } | |
1368 | ||
864472e9 TM |
1369 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1370 | { | |
1371 | struct nfs_open_context *ctx; | |
1372 | int ret; | |
1373 | ||
1374 | ctx = nfs4_state_find_open_context(state); | |
1375 | if (IS_ERR(ctx)) | |
91876b13 | 1376 | return -EAGAIN; |
539cd03a | 1377 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1378 | put_nfs_open_context(ctx); |
1379 | return ret; | |
1380 | } | |
1381 | ||
be76b5b6 | 1382 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 1383 | { |
be76b5b6 | 1384 | struct nfs_server *server = NFS_SERVER(state->inode); |
e56e0b78 | 1385 | struct nfs4_opendata *opendata; |
be76b5b6 | 1386 | int err; |
1da177e4 | 1387 | |
4a1c0893 | 1388 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
ccb46e20 | 1389 | NFS4_OPEN_CLAIM_DELEG_CUR_FH); |
6f220ed5 TM |
1390 | if (IS_ERR(opendata)) |
1391 | return PTR_ERR(opendata); | |
f597c537 | 1392 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); |
be76b5b6 | 1393 | err = nfs4_open_recover(opendata, state); |
c6d00e63 | 1394 | nfs4_opendata_put(opendata); |
be76b5b6 TM |
1395 | switch (err) { |
1396 | default: | |
1397 | printk(KERN_ERR "NFS: %s: unhandled error " | |
1398 | "%d.\n", __func__, err); | |
1399 | case 0: | |
1400 | case -ENOENT: | |
1401 | case -ESTALE: | |
1402 | break; | |
1403 | case -NFS4ERR_BADSESSION: | |
1404 | case -NFS4ERR_BADSLOT: | |
1405 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1406 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1407 | case -NFS4ERR_DEADSESSION: | |
1408 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1409 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); | |
1410 | return -EAGAIN; | |
1411 | case -NFS4ERR_STALE_CLIENTID: | |
1412 | case -NFS4ERR_STALE_STATEID: | |
1413 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1414 | case -NFS4ERR_EXPIRED: | |
1415 | /* Don't recall a delegation if it was lost */ | |
1416 | nfs4_schedule_lease_recovery(server->nfs_client); | |
1417 | return -EAGAIN; | |
1418 | case -NFS4ERR_DELEG_REVOKED: | |
1419 | case -NFS4ERR_ADMIN_REVOKED: | |
1420 | case -NFS4ERR_BAD_STATEID: | |
1421 | nfs_inode_find_state_and_recover(state->inode, | |
1422 | stateid); | |
1423 | nfs4_schedule_stateid_recovery(server, state); | |
1424 | case -ENOMEM: | |
1425 | return 0; | |
1426 | case -NFS4ERR_DELAY: | |
1427 | case -NFS4ERR_GRACE: | |
1428 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1429 | ssleep(1); | |
1430 | return -EAGAIN; | |
1431 | } | |
1da177e4 LT |
1432 | return err; |
1433 | } | |
1434 | ||
cdd4e68b TM |
1435 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1436 | { | |
1437 | struct nfs4_opendata *data = calldata; | |
1438 | ||
1439 | data->rpc_status = task->tk_status; | |
26e976a8 | 1440 | if (data->rpc_status == 0) { |
f597c537 | 1441 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 1442 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1443 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1444 | data->rpc_done = 1; |
26e976a8 | 1445 | } |
cdd4e68b TM |
1446 | } |
1447 | ||
1448 | static void nfs4_open_confirm_release(void *calldata) | |
1449 | { | |
1450 | struct nfs4_opendata *data = calldata; | |
1451 | struct nfs4_state *state = NULL; | |
1452 | ||
1453 | /* If this request hasn't been cancelled, do nothing */ | |
1454 | if (data->cancelled == 0) | |
1455 | goto out_free; | |
1456 | /* In case of error, no cleanup! */ | |
3e309914 | 1457 | if (!data->rpc_done) |
cdd4e68b | 1458 | goto out_free; |
cdd4e68b | 1459 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1460 | if (!IS_ERR(state)) |
643168c2 | 1461 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1462 | out_free: |
c6d00e63 | 1463 | nfs4_opendata_put(data); |
cdd4e68b TM |
1464 | } |
1465 | ||
1466 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1467 | .rpc_call_done = nfs4_open_confirm_done, |
1468 | .rpc_release = nfs4_open_confirm_release, | |
1469 | }; | |
1470 | ||
1471 | /* | |
1472 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1473 | */ | |
1474 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1475 | { | |
1476 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1477 | struct rpc_task *task; | |
5138fde0 TM |
1478 | struct rpc_message msg = { |
1479 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1480 | .rpc_argp = &data->c_arg, | |
1481 | .rpc_resp = &data->c_res, | |
1482 | .rpc_cred = data->owner->so_cred, | |
1483 | }; | |
c970aa85 TM |
1484 | struct rpc_task_setup task_setup_data = { |
1485 | .rpc_client = server->client, | |
5138fde0 | 1486 | .rpc_message = &msg, |
c970aa85 TM |
1487 | .callback_ops = &nfs4_open_confirm_ops, |
1488 | .callback_data = data, | |
101070ca | 1489 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1490 | .flags = RPC_TASK_ASYNC, |
1491 | }; | |
1da177e4 LT |
1492 | int status; |
1493 | ||
c6d00e63 | 1494 | kref_get(&data->kref); |
3e309914 TM |
1495 | data->rpc_done = 0; |
1496 | data->rpc_status = 0; | |
5138fde0 | 1497 | data->timestamp = jiffies; |
c970aa85 | 1498 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1499 | if (IS_ERR(task)) |
cdd4e68b | 1500 | return PTR_ERR(task); |
cdd4e68b TM |
1501 | status = nfs4_wait_for_completion_rpc_task(task); |
1502 | if (status != 0) { | |
1503 | data->cancelled = 1; | |
1504 | smp_wmb(); | |
1505 | } else | |
1506 | status = data->rpc_status; | |
e6b3c4db | 1507 | rpc_put_task(task); |
1da177e4 LT |
1508 | return status; |
1509 | } | |
1510 | ||
24ac23ab | 1511 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1512 | { |
24ac23ab TM |
1513 | struct nfs4_opendata *data = calldata; |
1514 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 1515 | |
24ac23ab | 1516 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
c8da19b9 | 1517 | goto out_wait; |
aac00a8d TM |
1518 | /* |
1519 | * Check if we still need to send an OPEN call, or if we can use | |
1520 | * a delegation instead. | |
1521 | */ | |
1522 | if (data->state != NULL) { | |
1523 | struct nfs_delegation *delegation; | |
1524 | ||
dc0b027d | 1525 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1526 | goto out_no_action; |
aac00a8d TM |
1527 | rcu_read_lock(); |
1528 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
652f89f6 TM |
1529 | if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR && |
1530 | can_open_delegated(delegation, data->o_arg.fmode)) | |
1531 | goto unlock_no_action; | |
aac00a8d TM |
1532 | rcu_read_unlock(); |
1533 | } | |
95b72eb0 | 1534 | /* Update client id. */ |
1f0e890d | 1535 | data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; |
6f220ed5 | 1536 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 1537 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
e23008ec | 1538 | data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0]; |
6f220ed5 TM |
1539 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1540 | } | |
26e976a8 | 1541 | data->timestamp = jiffies; |
035168ab | 1542 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 1543 | &data->o_arg.seq_args, |
2240a9e2 TM |
1544 | &data->o_res.seq_res, |
1545 | task) != 0) | |
1546 | nfs_release_seqid(data->o_arg.seqid); | |
6ee41268 | 1547 | return; |
652f89f6 TM |
1548 | unlock_no_action: |
1549 | rcu_read_unlock(); | |
6ee41268 TM |
1550 | out_no_action: |
1551 | task->tk_action = NULL; | |
c8da19b9 | 1552 | out_wait: |
b75ad4cd | 1553 | nfs4_sequence_done(task, &data->o_res.seq_res); |
b257957e AB |
1554 | } |
1555 | ||
24ac23ab TM |
1556 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1557 | { | |
1558 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1559 | |
24ac23ab | 1560 | data->rpc_status = task->tk_status; |
d898528c | 1561 | |
14516c3a TM |
1562 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1563 | return; | |
d898528c | 1564 | |
24ac23ab | 1565 | if (task->tk_status == 0) { |
807d66d8 TM |
1566 | if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) { |
1567 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1568 | case S_IFREG: |
1569 | break; | |
1570 | case S_IFLNK: | |
24ac23ab | 1571 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1572 | break; |
1573 | case S_IFDIR: | |
24ac23ab | 1574 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1575 | break; |
1576 | default: | |
24ac23ab | 1577 | data->rpc_status = -ENOTDIR; |
807d66d8 | 1578 | } |
6f926b5b | 1579 | } |
26e976a8 | 1580 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1581 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1582 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1583 | } |
3e309914 | 1584 | data->rpc_done = 1; |
24ac23ab | 1585 | } |
6f926b5b | 1586 | |
24ac23ab TM |
1587 | static void nfs4_open_release(void *calldata) |
1588 | { | |
1589 | struct nfs4_opendata *data = calldata; | |
1590 | struct nfs4_state *state = NULL; | |
1591 | ||
1592 | /* If this request hasn't been cancelled, do nothing */ | |
1593 | if (data->cancelled == 0) | |
1594 | goto out_free; | |
1595 | /* In case of error, no cleanup! */ | |
3e309914 | 1596 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1597 | goto out_free; |
1598 | /* In case we need an open_confirm, no cleanup! */ | |
1599 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1600 | goto out_free; | |
24ac23ab | 1601 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1602 | if (!IS_ERR(state)) |
643168c2 | 1603 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1604 | out_free: |
c6d00e63 | 1605 | nfs4_opendata_put(data); |
24ac23ab TM |
1606 | } |
1607 | ||
1608 | static const struct rpc_call_ops nfs4_open_ops = { | |
1609 | .rpc_call_prepare = nfs4_open_prepare, | |
1610 | .rpc_call_done = nfs4_open_done, | |
1611 | .rpc_release = nfs4_open_release, | |
1612 | }; | |
1613 | ||
b257957e | 1614 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) |
24ac23ab TM |
1615 | { |
1616 | struct inode *dir = data->dir->d_inode; | |
1617 | struct nfs_server *server = NFS_SERVER(dir); | |
1618 | struct nfs_openargs *o_arg = &data->o_arg; | |
1619 | struct nfs_openres *o_res = &data->o_res; | |
1620 | struct rpc_task *task; | |
5138fde0 TM |
1621 | struct rpc_message msg = { |
1622 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1623 | .rpc_argp = o_arg, | |
1624 | .rpc_resp = o_res, | |
1625 | .rpc_cred = data->owner->so_cred, | |
1626 | }; | |
c970aa85 TM |
1627 | struct rpc_task_setup task_setup_data = { |
1628 | .rpc_client = server->client, | |
5138fde0 | 1629 | .rpc_message = &msg, |
c970aa85 TM |
1630 | .callback_ops = &nfs4_open_ops, |
1631 | .callback_data = data, | |
101070ca | 1632 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1633 | .flags = RPC_TASK_ASYNC, |
1634 | }; | |
24ac23ab TM |
1635 | int status; |
1636 | ||
9d12b216 | 1637 | nfs41_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 1638 | kref_get(&data->kref); |
3e309914 TM |
1639 | data->rpc_done = 0; |
1640 | data->rpc_status = 0; | |
2ced46c2 | 1641 | data->cancelled = 0; |
b257957e | 1642 | if (isrecover) |
8fe72bac | 1643 | nfs4_set_sequence_privileged(&o_arg->seq_args); |
c970aa85 | 1644 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1645 | if (IS_ERR(task)) |
1646 | return PTR_ERR(task); | |
1647 | status = nfs4_wait_for_completion_rpc_task(task); | |
1648 | if (status != 0) { | |
1649 | data->cancelled = 1; | |
1650 | smp_wmb(); | |
1651 | } else | |
1652 | status = data->rpc_status; | |
1653 | rpc_put_task(task); | |
1654 | ||
1655 | return status; | |
1656 | } | |
1657 | ||
1658 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1659 | { | |
1660 | struct inode *dir = data->dir->d_inode; | |
1661 | struct nfs_openres *o_res = &data->o_res; | |
1662 | int status; | |
1663 | ||
1664 | status = nfs4_run_open_task(data, 1); | |
1665 | if (status != 0 || !data->rpc_done) | |
1666 | return status; | |
1667 | ||
6926afd1 TM |
1668 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
1669 | ||
b257957e AB |
1670 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
1671 | status = _nfs4_proc_open_confirm(data); | |
1672 | if (status != 0) | |
1673 | return status; | |
1674 | } | |
1675 | ||
1676 | return status; | |
1677 | } | |
1678 | ||
6168f62c WAA |
1679 | static int nfs4_opendata_access(struct rpc_cred *cred, |
1680 | struct nfs4_opendata *opendata, | |
f8d9a897 WAA |
1681 | struct nfs4_state *state, fmode_t fmode, |
1682 | int openflags) | |
6168f62c WAA |
1683 | { |
1684 | struct nfs_access_entry cache; | |
1685 | u32 mask; | |
1686 | ||
1687 | /* access call failed or for some reason the server doesn't | |
1688 | * support any access modes -- defer access call until later */ | |
1689 | if (opendata->o_res.access_supported == 0) | |
1690 | return 0; | |
1691 | ||
1692 | mask = 0; | |
bbd3a8ee | 1693 | /* don't check MAY_WRITE - a newly created file may not have |
f8d9a897 WAA |
1694 | * write mode bits, but POSIX allows the creating process to write. |
1695 | * use openflags to check for exec, because fmode won't | |
1696 | * always have FMODE_EXEC set when file open for exec. */ | |
1697 | if (openflags & __FMODE_EXEC) { | |
1698 | /* ONLY check for exec rights */ | |
1699 | mask = MAY_EXEC; | |
1700 | } else if (fmode & FMODE_READ) | |
1701 | mask = MAY_READ; | |
6168f62c WAA |
1702 | |
1703 | cache.cred = cred; | |
1704 | cache.jiffies = jiffies; | |
1705 | nfs_access_set_mask(&cache, opendata->o_res.access_result); | |
1706 | nfs_access_add_cache(state->inode, &cache); | |
1707 | ||
bbd3a8ee | 1708 | if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0) |
6168f62c WAA |
1709 | return 0; |
1710 | ||
1711 | /* even though OPEN succeeded, access is denied. Close the file */ | |
1712 | nfs4_close_state(state, fmode); | |
998f40b5 | 1713 | return -EACCES; |
6168f62c WAA |
1714 | } |
1715 | ||
b257957e AB |
1716 | /* |
1717 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1718 | */ | |
1719 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1720 | { | |
1721 | struct inode *dir = data->dir->d_inode; | |
1722 | struct nfs_server *server = NFS_SERVER(dir); | |
1723 | struct nfs_openargs *o_arg = &data->o_arg; | |
1724 | struct nfs_openres *o_res = &data->o_res; | |
1725 | int status; | |
1726 | ||
1727 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
1728 | if (!data->rpc_done) |
1729 | return status; | |
1730 | if (status != 0) { | |
1731 | if (status == -NFS4ERR_BADNAME && | |
1732 | !(o_arg->open_flags & O_CREAT)) | |
1733 | return -ENOENT; | |
24ac23ab | 1734 | return status; |
08ef7bd3 | 1735 | } |
24ac23ab | 1736 | |
6926afd1 TM |
1737 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
1738 | ||
90ff0c54 | 1739 | if (o_arg->open_flags & O_CREAT) |
56ae19f3 | 1740 | update_changeattr(dir, &o_res->cinfo); |
0df5dd4a TM |
1741 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1742 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1743 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1744 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1745 | if (status != 0) |
24ac23ab | 1746 | return status; |
1da177e4 LT |
1747 | } |
1748 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1749 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1750 | return 0; |
1da177e4 LT |
1751 | } |
1752 | ||
d83217c1 AA |
1753 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1754 | { | |
1755 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1756 | } | |
1757 | ||
1da177e4 LT |
1758 | /* |
1759 | * OPEN_EXPIRED: | |
1760 | * reclaim state on the server after a network partition. | |
1761 | * Assumes caller holds the appropriate lock | |
1762 | */ | |
539cd03a | 1763 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1764 | { |
e56e0b78 | 1765 | struct nfs4_opendata *opendata; |
864472e9 | 1766 | int ret; |
1da177e4 | 1767 | |
4a1c0893 | 1768 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
49f9a0fa | 1769 | NFS4_OPEN_CLAIM_FH); |
6f220ed5 TM |
1770 | if (IS_ERR(opendata)) |
1771 | return PTR_ERR(opendata); | |
864472e9 | 1772 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1773 | if (ret == -ESTALE) |
3d4ff43d | 1774 | d_drop(ctx->dentry); |
c6d00e63 | 1775 | nfs4_opendata_put(opendata); |
864472e9 | 1776 | return ret; |
1da177e4 LT |
1777 | } |
1778 | ||
a9ed2e25 | 1779 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1780 | { |
539cd03a | 1781 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1782 | struct nfs4_exception exception = { }; |
1783 | int err; | |
1784 | ||
1785 | do { | |
539cd03a | 1786 | err = _nfs4_open_expired(ctx, state); |
49f9a0fa TM |
1787 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
1788 | continue; | |
a9ed2e25 TM |
1789 | switch (err) { |
1790 | default: | |
1791 | goto out; | |
1792 | case -NFS4ERR_GRACE: | |
1793 | case -NFS4ERR_DELAY: | |
1794 | nfs4_handle_exception(server, err, &exception); | |
1795 | err = 0; | |
1796 | } | |
202b50dc | 1797 | } while (exception.retry); |
a9ed2e25 | 1798 | out: |
202b50dc TM |
1799 | return err; |
1800 | } | |
1801 | ||
1da177e4 LT |
1802 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1803 | { | |
1da177e4 | 1804 | struct nfs_open_context *ctx; |
864472e9 | 1805 | int ret; |
1da177e4 | 1806 | |
864472e9 TM |
1807 | ctx = nfs4_state_find_open_context(state); |
1808 | if (IS_ERR(ctx)) | |
91876b13 | 1809 | return -EAGAIN; |
539cd03a | 1810 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1811 | put_nfs_open_context(ctx); |
1812 | return ret; | |
1da177e4 LT |
1813 | } |
1814 | ||
f062eb6c | 1815 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd | 1816 | static void nfs41_clear_delegation_stateid(struct nfs4_state *state) |
f062eb6c | 1817 | { |
f062eb6c | 1818 | struct nfs_server *server = NFS_SERVER(state->inode); |
3e60ffdd CL |
1819 | nfs4_stateid *stateid = &state->stateid; |
1820 | int status; | |
1821 | ||
1822 | /* If a state reset has been done, test_stateid is unneeded */ | |
1823 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
1824 | return; | |
1825 | ||
1826 | status = nfs41_test_stateid(server, stateid); | |
1827 | if (status != NFS_OK) { | |
1828 | /* Free the stateid unless the server explicitly | |
1829 | * informs us the stateid is unrecognized. */ | |
1830 | if (status != -NFS4ERR_BAD_STATEID) | |
1831 | nfs41_free_stateid(server, stateid); | |
6938867e | 1832 | nfs_remove_bad_delegation(state->inode); |
3e60ffdd | 1833 | |
6938867e BS |
1834 | write_seqlock(&state->seqlock); |
1835 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
1836 | write_sequnlock(&state->seqlock); | |
3e60ffdd CL |
1837 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
1838 | } | |
1839 | } | |
1840 | ||
1841 | /** | |
1842 | * nfs41_check_open_stateid - possibly free an open stateid | |
1843 | * | |
1844 | * @state: NFSv4 state for an inode | |
1845 | * | |
1846 | * Returns NFS_OK if recovery for this stateid is now finished. | |
1847 | * Otherwise a negative NFS4ERR value is returned. | |
1848 | */ | |
1849 | static int nfs41_check_open_stateid(struct nfs4_state *state) | |
1850 | { | |
1851 | struct nfs_server *server = NFS_SERVER(state->inode); | |
fcb6d9c6 | 1852 | nfs4_stateid *stateid = &state->open_stateid; |
3e60ffdd CL |
1853 | int status; |
1854 | ||
1855 | /* If a state reset has been done, test_stateid is unneeded */ | |
1856 | if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) && | |
1857 | (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) && | |
1858 | (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0)) | |
1859 | return -NFS4ERR_BAD_STATEID; | |
1860 | ||
1861 | status = nfs41_test_stateid(server, stateid); | |
1862 | if (status != NFS_OK) { | |
1863 | /* Free the stateid unless the server explicitly | |
1864 | * informs us the stateid is unrecognized. */ | |
1865 | if (status != -NFS4ERR_BAD_STATEID) | |
1866 | nfs41_free_stateid(server, stateid); | |
1867 | ||
1868 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1869 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1870 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
b01dd1d8 BS |
1871 | } |
1872 | return status; | |
1873 | } | |
1874 | ||
1875 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
1876 | { | |
eb64cf96 | 1877 | int status; |
b01dd1d8 | 1878 | |
3e60ffdd CL |
1879 | nfs41_clear_delegation_stateid(state); |
1880 | status = nfs41_check_open_stateid(state); | |
eb64cf96 CL |
1881 | if (status != NFS_OK) |
1882 | status = nfs4_open_expired(sp, state); | |
1883 | return status; | |
f062eb6c BS |
1884 | } |
1885 | #endif | |
1886 | ||
aa53ed54 JL |
1887 | /* |
1888 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1889 | * fields corresponding to attributes that were used to store the verifier. | |
1890 | * Make sure we clobber those fields in the later setattr call | |
1891 | */ | |
1892 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1893 | { | |
1894 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1895 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1896 | sattr->ia_valid |= ATTR_ATIME; | |
1897 | ||
1898 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1899 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1900 | sattr->ia_valid |= ATTR_MTIME; | |
1901 | } | |
1902 | ||
c21443c2 TM |
1903 | static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, |
1904 | fmode_t fmode, | |
1905 | int flags, | |
1906 | struct nfs4_state **res) | |
1907 | { | |
1908 | struct nfs4_state_owner *sp = opendata->owner; | |
1909 | struct nfs_server *server = sp->so_server; | |
1910 | struct nfs4_state *state; | |
1911 | unsigned int seq; | |
1912 | int ret; | |
1913 | ||
1914 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); | |
1915 | ||
1916 | ret = _nfs4_proc_open(opendata); | |
1917 | if (ret != 0) | |
1918 | goto out; | |
1919 | ||
1920 | state = nfs4_opendata_to_nfs4_state(opendata); | |
1921 | ret = PTR_ERR(state); | |
1922 | if (IS_ERR(state)) | |
1923 | goto out; | |
1924 | if (server->caps & NFS_CAP_POSIX_LOCK) | |
1925 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); | |
1926 | ||
1927 | ret = nfs4_opendata_access(sp->so_cred, opendata, state, fmode, flags); | |
1928 | if (ret != 0) | |
1929 | goto out; | |
1930 | ||
91876b13 | 1931 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) |
c21443c2 | 1932 | nfs4_schedule_stateid_recovery(server, state); |
c21443c2 TM |
1933 | *res = state; |
1934 | out: | |
1935 | return ret; | |
1936 | } | |
1937 | ||
1da177e4 | 1938 | /* |
24ac23ab | 1939 | * Returns a referenced nfs4_state |
1da177e4 | 1940 | */ |
82be417a AA |
1941 | static int _nfs4_do_open(struct inode *dir, |
1942 | struct dentry *dentry, | |
1943 | fmode_t fmode, | |
1944 | int flags, | |
1945 | struct iattr *sattr, | |
1946 | struct rpc_cred *cred, | |
1947 | struct nfs4_state **res, | |
1948 | struct nfs4_threshold **ctx_th) | |
1da177e4 LT |
1949 | { |
1950 | struct nfs4_state_owner *sp; | |
1951 | struct nfs4_state *state = NULL; | |
1952 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1953 | struct nfs4_opendata *opendata; |
49f9a0fa | 1954 | enum open_claim_type4 claim = NFS4_OPEN_CLAIM_NULL; |
aac00a8d | 1955 | int status; |
1da177e4 LT |
1956 | |
1957 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 1958 | status = -ENOMEM; |
d1e284d5 TM |
1959 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
1960 | if (sp == NULL) { | |
1da177e4 LT |
1961 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
1962 | goto out_err; | |
1963 | } | |
58d9714a TM |
1964 | status = nfs4_recover_expired_lease(server); |
1965 | if (status != 0) | |
b4454fe1 | 1966 | goto err_put_state_owner; |
82a2c1b7 AV |
1967 | if (dentry->d_inode != NULL) |
1968 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 1969 | status = -ENOMEM; |
49f9a0fa TM |
1970 | if (dentry->d_inode) |
1971 | claim = NFS4_OPEN_CLAIM_FH; | |
4a1c0893 | 1972 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, |
49f9a0fa | 1973 | claim, GFP_KERNEL); |
e56e0b78 | 1974 | if (opendata == NULL) |
95d35cb4 | 1975 | goto err_put_state_owner; |
1da177e4 | 1976 | |
82be417a AA |
1977 | if (ctx_th && server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
1978 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
1979 | if (!opendata->f_attr.mdsthreshold) | |
1980 | goto err_opendata_put; | |
1549210f | 1981 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 1982 | } |
82a2c1b7 AV |
1983 | if (dentry->d_inode != NULL) |
1984 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 1985 | |
c21443c2 | 1986 | status = _nfs4_open_and_get_state(opendata, fmode, flags, &state); |
6168f62c WAA |
1987 | if (status != 0) |
1988 | goto err_opendata_put; | |
1989 | ||
0ab64e0e TM |
1990 | if (opendata->o_arg.open_flags & O_EXCL) { |
1991 | nfs4_exclusive_attrset(opendata, sattr); | |
1992 | ||
1993 | nfs_fattr_init(opendata->o_res.f_attr); | |
1994 | status = nfs4_do_setattr(state->inode, cred, | |
1995 | opendata->o_res.f_attr, sattr, | |
1996 | state); | |
1997 | if (status == 0) | |
1998 | nfs_setattr_update_inode(state->inode, sattr); | |
1999 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
2000 | } | |
82be417a AA |
2001 | |
2002 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) | |
2003 | *ctx_th = opendata->f_attr.mdsthreshold; | |
2004 | else | |
2005 | kfree(opendata->f_attr.mdsthreshold); | |
2006 | opendata->f_attr.mdsthreshold = NULL; | |
2007 | ||
c6d00e63 | 2008 | nfs4_opendata_put(opendata); |
1da177e4 | 2009 | nfs4_put_state_owner(sp); |
1da177e4 LT |
2010 | *res = state; |
2011 | return 0; | |
c6d00e63 | 2012 | err_opendata_put: |
82be417a | 2013 | kfree(opendata->f_attr.mdsthreshold); |
c6d00e63 | 2014 | nfs4_opendata_put(opendata); |
e56e0b78 TM |
2015 | err_put_state_owner: |
2016 | nfs4_put_state_owner(sp); | |
1da177e4 | 2017 | out_err: |
1da177e4 LT |
2018 | *res = NULL; |
2019 | return status; | |
2020 | } | |
2021 | ||
2022 | ||
82be417a AA |
2023 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
2024 | struct dentry *dentry, | |
2025 | fmode_t fmode, | |
2026 | int flags, | |
2027 | struct iattr *sattr, | |
2028 | struct rpc_cred *cred, | |
2029 | struct nfs4_threshold **ctx_th) | |
1da177e4 | 2030 | { |
49f9a0fa | 2031 | struct nfs_server *server = NFS_SERVER(dir); |
1da177e4 LT |
2032 | struct nfs4_exception exception = { }; |
2033 | struct nfs4_state *res; | |
2034 | int status; | |
2035 | ||
6168f62c | 2036 | fmode &= FMODE_READ|FMODE_WRITE|FMODE_EXEC; |
1da177e4 | 2037 | do { |
82be417a AA |
2038 | status = _nfs4_do_open(dir, dentry, fmode, flags, sattr, cred, |
2039 | &res, ctx_th); | |
1da177e4 LT |
2040 | if (status == 0) |
2041 | break; | |
2042 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
2043 | * book-keeping w.r.t. state-changing operations | |
2044 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
2045 | * It is actually a sign of a bug on the client or on the server. | |
2046 | * | |
2047 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 2048 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
2049 | * have unhashed the old state_owner for us, and that we can |
2050 | * therefore safely retry using a new one. We should still warn | |
2051 | * the user though... | |
2052 | */ | |
2053 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 2054 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
2055 | " returned a bad sequence-id error!\n", |
2056 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
2057 | exception.retry = 1; |
2058 | continue; | |
2059 | } | |
550f5747 TM |
2060 | /* |
2061 | * BAD_STATEID on OPEN means that the server cancelled our | |
2062 | * state before it received the OPEN_CONFIRM. | |
2063 | * Recover by retrying the request as per the discussion | |
2064 | * on Page 181 of RFC3530. | |
2065 | */ | |
2066 | if (status == -NFS4ERR_BAD_STATEID) { | |
2067 | exception.retry = 1; | |
2068 | continue; | |
2069 | } | |
aac00a8d TM |
2070 | if (status == -EAGAIN) { |
2071 | /* We must have found a delegation */ | |
2072 | exception.retry = 1; | |
2073 | continue; | |
2074 | } | |
49f9a0fa TM |
2075 | if (nfs4_clear_cap_atomic_open_v1(server, status, &exception)) |
2076 | continue; | |
2077 | res = ERR_PTR(nfs4_handle_exception(server, | |
1da177e4 LT |
2078 | status, &exception)); |
2079 | } while (exception.retry); | |
2080 | return res; | |
2081 | } | |
2082 | ||
659bfcd6 TM |
2083 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2084 | struct nfs_fattr *fattr, struct iattr *sattr, | |
2085 | struct nfs4_state *state) | |
1da177e4 | 2086 | { |
3e4f6290 | 2087 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 2088 | struct nfs_setattrargs arg = { |
3e4f6290 | 2089 | .fh = NFS_FH(inode), |
1da177e4 LT |
2090 | .iap = sattr, |
2091 | .server = server, | |
2092 | .bitmask = server->attr_bitmask, | |
2093 | }; | |
2094 | struct nfs_setattrres res = { | |
2095 | .fattr = fattr, | |
2096 | .server = server, | |
2097 | }; | |
2098 | struct rpc_message msg = { | |
659bfcd6 TM |
2099 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
2100 | .rpc_argp = &arg, | |
2101 | .rpc_resp = &res, | |
2102 | .rpc_cred = cred, | |
1da177e4 | 2103 | }; |
26e976a8 | 2104 | unsigned long timestamp = jiffies; |
65e4308d | 2105 | int status; |
1da177e4 | 2106 | |
0e574af1 | 2107 | nfs_fattr_init(fattr); |
1da177e4 | 2108 | |
5d422301 | 2109 | if (state != NULL && nfs4_valid_open_stateid(state)) { |
2a369153 TM |
2110 | struct nfs_lockowner lockowner = { |
2111 | .l_owner = current->files, | |
2112 | .l_pid = current->tgid, | |
2113 | }; | |
4fc8796d | 2114 | nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, |
2a369153 | 2115 | &lockowner); |
4fc8796d TM |
2116 | } else if (nfs4_copy_delegation_stateid(&arg.stateid, inode, |
2117 | FMODE_WRITE)) { | |
3e4f6290 | 2118 | /* Use that stateid */ |
08e9eac4 | 2119 | } else |
f597c537 | 2120 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 2121 | |
7c513058 | 2122 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
2123 | if (status == 0 && state != NULL) |
2124 | renew_lease(server, timestamp); | |
65e4308d | 2125 | return status; |
1da177e4 LT |
2126 | } |
2127 | ||
659bfcd6 TM |
2128 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2129 | struct nfs_fattr *fattr, struct iattr *sattr, | |
2130 | struct nfs4_state *state) | |
1da177e4 | 2131 | { |
3e4f6290 | 2132 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
2133 | struct nfs4_exception exception = { |
2134 | .state = state, | |
3114ea7a | 2135 | .inode = inode, |
a1d0b5ee | 2136 | }; |
1da177e4 LT |
2137 | int err; |
2138 | do { | |
451146be TM |
2139 | err = _nfs4_do_setattr(inode, cred, fattr, sattr, state); |
2140 | switch (err) { | |
2141 | case -NFS4ERR_OPENMODE: | |
2142 | if (state && !(state->state & FMODE_WRITE)) { | |
2143 | err = -EBADF; | |
2144 | if (sattr->ia_valid & ATTR_OPEN) | |
2145 | err = -EACCES; | |
2146 | goto out; | |
2147 | } | |
2148 | } | |
2149 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 2150 | } while (exception.retry); |
451146be | 2151 | out: |
1da177e4 LT |
2152 | return err; |
2153 | } | |
2154 | ||
2155 | struct nfs4_closedata { | |
2156 | struct inode *inode; | |
2157 | struct nfs4_state *state; | |
2158 | struct nfs_closeargs arg; | |
2159 | struct nfs_closeres res; | |
516a6af6 | 2160 | struct nfs_fattr fattr; |
26e976a8 | 2161 | unsigned long timestamp; |
f7e8917a FI |
2162 | bool roc; |
2163 | u32 roc_barrier; | |
1da177e4 LT |
2164 | }; |
2165 | ||
963d8fe5 | 2166 | static void nfs4_free_closedata(void *data) |
9512135d | 2167 | { |
963d8fe5 TM |
2168 | struct nfs4_closedata *calldata = data; |
2169 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 2170 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 2171 | |
f7e8917a FI |
2172 | if (calldata->roc) |
2173 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
2174 | nfs4_put_open_state(calldata->state); |
2175 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 2176 | nfs4_put_state_owner(sp); |
322b2b90 | 2177 | nfs_sb_deactive(sb); |
9512135d TM |
2178 | kfree(calldata); |
2179 | } | |
2180 | ||
88069f77 TM |
2181 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
2182 | fmode_t fmode) | |
2183 | { | |
2184 | spin_lock(&state->owner->so_lock); | |
2185 | if (!(fmode & FMODE_READ)) | |
2186 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2187 | if (!(fmode & FMODE_WRITE)) | |
2188 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2189 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
2190 | spin_unlock(&state->owner->so_lock); | |
2191 | } | |
2192 | ||
963d8fe5 | 2193 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2194 | { |
963d8fe5 | 2195 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2196 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
2197 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
2198 | ||
a3ca5651 | 2199 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2200 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2201 | return; | |
1da177e4 LT |
2202 | /* hmm. we are done with the inode, and in the process of freeing |
2203 | * the state_owner. we keep this around to process errors | |
2204 | */ | |
1da177e4 LT |
2205 | switch (task->tk_status) { |
2206 | case 0: | |
f7e8917a FI |
2207 | if (calldata->roc) |
2208 | pnfs_roc_set_barrier(state->inode, | |
2209 | calldata->roc_barrier); | |
45328c35 | 2210 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 2211 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
2212 | nfs4_close_clear_stateid_flags(state, |
2213 | calldata->arg.fmode); | |
1da177e4 LT |
2214 | break; |
2215 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
2216 | case -NFS4ERR_OLD_STATEID: |
2217 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2218 | case -NFS4ERR_EXPIRED: |
dc0b027d | 2219 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2220 | break; |
1da177e4 | 2221 | default: |
72211dbe TM |
2222 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
2223 | rpc_restart_call_prepare(task); | |
1da177e4 | 2224 | } |
72211dbe | 2225 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2226 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2227 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2228 | } |
2229 | ||
4ce70ada | 2230 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2231 | { |
4ce70ada | 2232 | struct nfs4_closedata *calldata = data; |
9512135d | 2233 | struct nfs4_state *state = calldata->state; |
7fdab069 | 2234 | struct inode *inode = calldata->inode; |
88069f77 | 2235 | int call_close = 0; |
9512135d | 2236 | |
a3ca5651 | 2237 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2238 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 2239 | goto out_wait; |
003707c7 | 2240 | |
88069f77 TM |
2241 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
2242 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 2243 | spin_lock(&state->owner->so_lock); |
003707c7 | 2244 | /* Calculate the change in open mode */ |
e7616923 | 2245 | if (state->n_rdwr == 0) { |
003707c7 | 2246 | if (state->n_rdonly == 0) { |
88069f77 TM |
2247 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
2248 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2249 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
2250 | } |
2251 | if (state->n_wronly == 0) { | |
88069f77 TM |
2252 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
2253 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2254 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 2255 | } |
e7616923 | 2256 | } |
5d422301 TM |
2257 | if (!nfs4_valid_open_stateid(state)) |
2258 | call_close = 0; | |
4cecb76f | 2259 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2260 | |
2261 | if (!call_close) { | |
963d8fe5 | 2262 | /* Note: exit _without_ calling nfs4_close_done */ |
c8da19b9 | 2263 | goto out_no_action; |
9512135d | 2264 | } |
88069f77 | 2265 | |
f7e8917a | 2266 | if (calldata->arg.fmode == 0) { |
88069f77 | 2267 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a | 2268 | if (calldata->roc && |
7fdab069 | 2269 | pnfs_roc_drain(inode, &calldata->roc_barrier, task)) |
c8da19b9 | 2270 | goto out_wait; |
f7e8917a | 2271 | } |
88069f77 | 2272 | |
516a6af6 | 2273 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2274 | calldata->timestamp = jiffies; |
7fdab069 | 2275 | if (nfs4_setup_sequence(NFS_SERVER(inode), |
9d12b216 TM |
2276 | &calldata->arg.seq_args, |
2277 | &calldata->res.seq_res, | |
2240a9e2 TM |
2278 | task) != 0) |
2279 | nfs_release_seqid(calldata->arg.seqid); | |
a3ca5651 | 2280 | dprintk("%s: done!\n", __func__); |
c8da19b9 TM |
2281 | return; |
2282 | out_no_action: | |
2283 | task->tk_action = NULL; | |
2284 | out_wait: | |
2285 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
1da177e4 LT |
2286 | } |
2287 | ||
963d8fe5 | 2288 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2289 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2290 | .rpc_call_done = nfs4_close_done, |
2291 | .rpc_release = nfs4_free_closedata, | |
2292 | }; | |
2293 | ||
1da177e4 LT |
2294 | /* |
2295 | * It is possible for data to be read/written from a mem-mapped file | |
2296 | * after the sys_close call (which hits the vfs layer as a flush). | |
2297 | * This means that we can't safely call nfsv4 close on a file until | |
2298 | * the inode is cleared. This in turn means that we are not good | |
2299 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2300 | * share state even when we are done with one of the three share | |
2301 | * stateid's in the inode. | |
2302 | * | |
2303 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2304 | */ | |
1f7977c1 | 2305 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) |
1da177e4 | 2306 | { |
4a35bd41 | 2307 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2308 | struct nfs4_closedata *calldata; |
b39e625b TM |
2309 | struct nfs4_state_owner *sp = state->owner; |
2310 | struct rpc_task *task; | |
5138fde0 TM |
2311 | struct rpc_message msg = { |
2312 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2313 | .rpc_cred = state->owner->so_cred, | |
2314 | }; | |
c970aa85 TM |
2315 | struct rpc_task_setup task_setup_data = { |
2316 | .rpc_client = server->client, | |
5138fde0 | 2317 | .rpc_message = &msg, |
c970aa85 | 2318 | .callback_ops = &nfs4_close_ops, |
101070ca | 2319 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2320 | .flags = RPC_TASK_ASYNC, |
2321 | }; | |
9512135d | 2322 | int status = -ENOMEM; |
1da177e4 | 2323 | |
8535b2be | 2324 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2325 | if (calldata == NULL) |
9512135d | 2326 | goto out; |
9d12b216 | 2327 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2328 | calldata->inode = state->inode; |
1da177e4 | 2329 | calldata->state = state; |
4a35bd41 | 2330 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2331 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2332 | /* Serialization for the sequence id */ |
8535b2be | 2333 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2334 | if (calldata->arg.seqid == NULL) |
2335 | goto out_free_calldata; | |
dc0b027d | 2336 | calldata->arg.fmode = 0; |
a65318bf | 2337 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2338 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2339 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2340 | calldata->res.server = server; |
1f7977c1 | 2341 | calldata->roc = pnfs_roc(state->inode); |
643168c2 | 2342 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2343 | |
1174dd1f TM |
2344 | msg.rpc_argp = &calldata->arg; |
2345 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2346 | task_setup_data.callback_data = calldata; |
2347 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2348 | if (IS_ERR(task)) |
2349 | return PTR_ERR(task); | |
a49c3c77 TM |
2350 | status = 0; |
2351 | if (wait) | |
2352 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2353 | rpc_put_task(task); |
a49c3c77 | 2354 | return status; |
9512135d TM |
2355 | out_free_calldata: |
2356 | kfree(calldata); | |
2357 | out: | |
b39e625b TM |
2358 | nfs4_put_open_state(state); |
2359 | nfs4_put_state_owner(sp); | |
9512135d | 2360 | return status; |
1da177e4 LT |
2361 | } |
2362 | ||
2b484297 | 2363 | static struct inode * |
cd9a1c0e | 2364 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2365 | { |
1da177e4 | 2366 | struct nfs4_state *state; |
1da177e4 | 2367 | |
565277f6 | 2368 | /* Protect against concurrent sillydeletes */ |
82be417a AA |
2369 | state = nfs4_do_open(dir, ctx->dentry, ctx->mode, open_flags, attr, |
2370 | ctx->cred, &ctx->mdsthreshold); | |
f46e0bd3 TM |
2371 | if (IS_ERR(state)) |
2372 | return ERR_CAST(state); | |
cd9a1c0e | 2373 | ctx->state = state; |
f46e0bd3 | 2374 | return igrab(state->inode); |
1da177e4 LT |
2375 | } |
2376 | ||
1185a552 | 2377 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2378 | { |
2379 | if (ctx->state == NULL) | |
2380 | return; | |
2381 | if (is_sync) | |
643168c2 | 2382 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2383 | else |
643168c2 | 2384 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2385 | } |
1da177e4 LT |
2386 | |
2387 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2388 | { | |
43652ad5 BH |
2389 | struct nfs4_server_caps_arg args = { |
2390 | .fhandle = fhandle, | |
2391 | }; | |
1da177e4 LT |
2392 | struct nfs4_server_caps_res res = {}; |
2393 | struct rpc_message msg = { | |
2394 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2395 | .rpc_argp = &args, |
1da177e4 LT |
2396 | .rpc_resp = &res, |
2397 | }; | |
2398 | int status; | |
2399 | ||
7c513058 | 2400 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2401 | if (status == 0) { |
2402 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2403 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2404 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2405 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2406 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2407 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2408 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2409 | server->caps |= NFS_CAP_ACLS; | |
2410 | if (res.has_links != 0) | |
2411 | server->caps |= NFS_CAP_HARDLINKS; | |
2412 | if (res.has_symlinks != 0) | |
2413 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2414 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2415 | server->caps |= NFS_CAP_FILEID; | |
2416 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2417 | server->caps |= NFS_CAP_MODE; | |
2418 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2419 | server->caps |= NFS_CAP_NLINK; | |
2420 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2421 | server->caps |= NFS_CAP_OWNER; | |
2422 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2423 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2424 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2425 | server->caps |= NFS_CAP_ATIME; | |
2426 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2427 | server->caps |= NFS_CAP_CTIME; | |
2428 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2429 | server->caps |= NFS_CAP_MTIME; | |
2430 | ||
a65318bf TM |
2431 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2432 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2433 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 | 2434 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 2435 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 2436 | } |
cccef3b9 | 2437 | |
1da177e4 LT |
2438 | return status; |
2439 | } | |
2440 | ||
55a97593 | 2441 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2442 | { |
2443 | struct nfs4_exception exception = { }; | |
2444 | int err; | |
2445 | do { | |
2446 | err = nfs4_handle_exception(server, | |
2447 | _nfs4_server_capabilities(server, fhandle), | |
2448 | &exception); | |
2449 | } while (exception.retry); | |
2450 | return err; | |
2451 | } | |
2452 | ||
2453 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2454 | struct nfs_fsinfo *info) | |
2455 | { | |
1da177e4 LT |
2456 | struct nfs4_lookup_root_arg args = { |
2457 | .bitmask = nfs4_fattr_bitmap, | |
2458 | }; | |
2459 | struct nfs4_lookup_res res = { | |
2460 | .server = server, | |
0e574af1 | 2461 | .fattr = info->fattr, |
1da177e4 LT |
2462 | .fh = fhandle, |
2463 | }; | |
2464 | struct rpc_message msg = { | |
2465 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2466 | .rpc_argp = &args, | |
2467 | .rpc_resp = &res, | |
2468 | }; | |
008f55d0 | 2469 | |
0e574af1 | 2470 | nfs_fattr_init(info->fattr); |
7c513058 | 2471 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2472 | } |
2473 | ||
2474 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2475 | struct nfs_fsinfo *info) | |
2476 | { | |
2477 | struct nfs4_exception exception = { }; | |
2478 | int err; | |
2479 | do { | |
fb8a5ba8 BS |
2480 | err = _nfs4_lookup_root(server, fhandle, info); |
2481 | switch (err) { | |
2482 | case 0: | |
2483 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 2484 | goto out; |
fb8a5ba8 BS |
2485 | default: |
2486 | err = nfs4_handle_exception(server, err, &exception); | |
2487 | } | |
1da177e4 | 2488 | } while (exception.retry); |
05e9cfb4 | 2489 | out: |
1da177e4 LT |
2490 | return err; |
2491 | } | |
2492 | ||
8f70e95f BS |
2493 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2494 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2495 | { | |
2496 | struct rpc_auth *auth; | |
2497 | int ret; | |
2498 | ||
2499 | auth = rpcauth_create(flavor, server->client); | |
e8d920c5 | 2500 | if (IS_ERR(auth)) { |
8f70e95f BS |
2501 | ret = -EIO; |
2502 | goto out; | |
2503 | } | |
2504 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2505 | out: |
2506 | return ret; | |
2507 | } | |
2508 | ||
801a16dc | 2509 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2510 | struct nfs_fsinfo *info) |
1da177e4 | 2511 | { |
8f70e95f | 2512 | int i, len, status = 0; |
0fabee24 | 2513 | rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS]; |
1da177e4 | 2514 | |
6a1a1e34 | 2515 | len = rpcauth_list_flavors(flav_array, ARRAY_SIZE(flav_array)); |
4ea8fed5 TM |
2516 | if (len < 0) |
2517 | return len; | |
8f70e95f BS |
2518 | |
2519 | for (i = 0; i < len; i++) { | |
6a1a1e34 CL |
2520 | /* AUTH_UNIX is the default flavor if none was specified, |
2521 | * thus has already been tried. */ | |
2522 | if (flav_array[i] == RPC_AUTH_UNIX) | |
2523 | continue; | |
2524 | ||
8f70e95f | 2525 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); |
fb8a5ba8 | 2526 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2527 | continue; |
2528 | break; | |
8f70e95f | 2529 | } |
fb8a5ba8 BS |
2530 | /* |
2531 | * -EACCESS could mean that the user doesn't have correct permissions | |
2532 | * to access the mount. It could also mean that we tried to mount | |
2533 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2534 | * existing mount programs don't handle -EACCES very well so it should | |
2535 | * be mapped to -EPERM instead. | |
2536 | */ | |
2537 | if (status == -EACCES) | |
2538 | status = -EPERM; | |
801a16dc BS |
2539 | return status; |
2540 | } | |
2541 | ||
2542 | /* | |
2543 | * get the file handle for the "/" directory on the server | |
2544 | */ | |
3028eb2b BS |
2545 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
2546 | struct nfs_fsinfo *info) | |
801a16dc | 2547 | { |
fca78d6d | 2548 | int minor_version = server->nfs_client->cl_minorversion; |
801a16dc | 2549 | int status = nfs4_lookup_root(server, fhandle, info); |
fb8a5ba8 BS |
2550 | if ((status == -NFS4ERR_WRONGSEC) && !(server->flags & NFS_MOUNT_SECFLAVOUR)) |
2551 | /* | |
2552 | * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM | |
2553 | * by nfs4_map_errors() as this function exits. | |
2554 | */ | |
fca78d6d | 2555 | status = nfs_v4_minor_ops[minor_version]->find_root_sec(server, fhandle, info); |
1da177e4 LT |
2556 | if (status == 0) |
2557 | status = nfs4_server_capabilities(server, fhandle); | |
2558 | if (status == 0) | |
2559 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2560 | return nfs4_map_errors(status); |
1da177e4 LT |
2561 | } |
2562 | ||
bae36241 BS |
2563 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
2564 | struct nfs_fsinfo *info) | |
2565 | { | |
2566 | int error; | |
2567 | struct nfs_fattr *fattr = info->fattr; | |
2568 | ||
2569 | error = nfs4_server_capabilities(server, mntfh); | |
2570 | if (error < 0) { | |
2571 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
2572 | return error; | |
2573 | } | |
2574 | ||
2575 | error = nfs4_proc_getattr(server, mntfh, fattr); | |
2576 | if (error < 0) { | |
2577 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
2578 | return error; | |
2579 | } | |
2580 | ||
2581 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
2582 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
2583 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
2584 | ||
2585 | return error; | |
2586 | } | |
2587 | ||
6b97fd3d MN |
2588 | /* |
2589 | * Get locations and (maybe) other attributes of a referral. | |
2590 | * Note that we'll actually follow the referral later when | |
2591 | * we detect fsid mismatch in inode revalidation | |
2592 | */ | |
f05d147f BS |
2593 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
2594 | const struct qstr *name, struct nfs_fattr *fattr, | |
2595 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
2596 | { |
2597 | int status = -ENOMEM; | |
2598 | struct page *page = NULL; | |
2599 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2600 | |
2601 | page = alloc_page(GFP_KERNEL); | |
2602 | if (page == NULL) | |
2603 | goto out; | |
2604 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2605 | if (locations == NULL) | |
2606 | goto out; | |
2607 | ||
f05d147f | 2608 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
2609 | if (status != 0) |
2610 | goto out; | |
2611 | /* Make sure server returned a different fsid for the referral */ | |
2612 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2613 | dprintk("%s: server did not return a different fsid for" |
2614 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2615 | status = -EIO; |
2616 | goto out; | |
2617 | } | |
533eb461 AA |
2618 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2619 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2620 | |
533eb461 | 2621 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2622 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2623 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2624 | out: | |
2625 | if (page) | |
2626 | __free_page(page); | |
5d7ca35a | 2627 | kfree(locations); |
6b97fd3d MN |
2628 | return status; |
2629 | } | |
2630 | ||
1da177e4 LT |
2631 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2632 | { | |
2633 | struct nfs4_getattr_arg args = { | |
2634 | .fh = fhandle, | |
2635 | .bitmask = server->attr_bitmask, | |
2636 | }; | |
2637 | struct nfs4_getattr_res res = { | |
2638 | .fattr = fattr, | |
2639 | .server = server, | |
2640 | }; | |
2641 | struct rpc_message msg = { | |
2642 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2643 | .rpc_argp = &args, | |
2644 | .rpc_resp = &res, | |
2645 | }; | |
2646 | ||
0e574af1 | 2647 | nfs_fattr_init(fattr); |
7c513058 | 2648 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2649 | } |
2650 | ||
2651 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2652 | { | |
2653 | struct nfs4_exception exception = { }; | |
2654 | int err; | |
2655 | do { | |
2656 | err = nfs4_handle_exception(server, | |
2657 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2658 | &exception); | |
2659 | } while (exception.retry); | |
2660 | return err; | |
2661 | } | |
2662 | ||
2663 | /* | |
2664 | * The file is not closed if it is opened due to the a request to change | |
2665 | * the size of the file. The open call will not be needed once the | |
2666 | * VFS layer lookup-intents are implemented. | |
2667 | * | |
2668 | * Close is called when the inode is destroyed. | |
2669 | * If we haven't opened the file for O_WRONLY, we | |
2670 | * need to in the size_change case to obtain a stateid. | |
2671 | * | |
2672 | * Got race? | |
2673 | * Because OPEN is always done by name in nfsv4, it is | |
2674 | * possible that we opened a different file by the same | |
2675 | * name. We can recognize this race condition, but we | |
2676 | * can't do anything about it besides returning an error. | |
2677 | * | |
2678 | * This will be fixed with VFS changes (lookup-intent). | |
2679 | */ | |
2680 | static int | |
2681 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2682 | struct iattr *sattr) | |
2683 | { | |
08e9eac4 | 2684 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2685 | struct rpc_cred *cred = NULL; |
d530838b | 2686 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2687 | int status; |
2688 | ||
8a1636c4 | 2689 | if (pnfs_ld_layoutret_on_setattr(inode)) |
24028672 | 2690 | pnfs_commit_and_return_layout(inode); |
8a1636c4 | 2691 | |
0e574af1 | 2692 | nfs_fattr_init(fattr); |
1da177e4 | 2693 | |
2669940d AA |
2694 | /* Deal with open(O_TRUNC) */ |
2695 | if (sattr->ia_valid & ATTR_OPEN) | |
2696 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME|ATTR_OPEN); | |
2697 | ||
2698 | /* Optimization: if the end result is no change, don't RPC */ | |
2699 | if ((sattr->ia_valid & ~(ATTR_FILE)) == 0) | |
2700 | return 0; | |
2701 | ||
d530838b | 2702 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2703 | if (sattr->ia_valid & ATTR_FILE) { |
2704 | struct nfs_open_context *ctx; | |
2705 | ||
2706 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2707 | if (ctx) { |
2708 | cred = ctx->cred; | |
2709 | state = ctx->state; | |
2710 | } | |
659bfcd6 | 2711 | } |
08e9eac4 | 2712 | |
659bfcd6 | 2713 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2714 | if (status == 0) |
2715 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2716 | return status; |
2717 | } | |
2718 | ||
0c2e53f1 TM |
2719 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
2720 | const struct qstr *name, struct nfs_fh *fhandle, | |
2721 | struct nfs_fattr *fattr) | |
2b3de441 | 2722 | { |
0c2e53f1 | 2723 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
2724 | int status; |
2725 | struct nfs4_lookup_arg args = { | |
2726 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 2727 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
2728 | .name = name, |
2729 | }; | |
2730 | struct nfs4_lookup_res res = { | |
2731 | .server = server, | |
2732 | .fattr = fattr, | |
2733 | .fh = fhandle, | |
2734 | }; | |
2735 | struct rpc_message msg = { | |
2736 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2737 | .rpc_argp = &args, | |
2738 | .rpc_resp = &res, | |
2739 | }; | |
2740 | ||
2741 | nfs_fattr_init(fattr); | |
2742 | ||
1da177e4 | 2743 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 2744 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2745 | dprintk("NFS reply lookup: %d\n", status); |
2746 | return status; | |
2747 | } | |
2748 | ||
72de53ec | 2749 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 2750 | { |
7ebb9315 | 2751 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 2752 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
2753 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
2754 | fattr->nlink = 2; | |
2755 | } | |
2756 | ||
72de53ec BS |
2757 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
2758 | struct qstr *name, struct nfs_fh *fhandle, | |
2759 | struct nfs_fattr *fattr) | |
1da177e4 LT |
2760 | { |
2761 | struct nfs4_exception exception = { }; | |
72de53ec | 2762 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
2763 | int err; |
2764 | do { | |
72de53ec BS |
2765 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr); |
2766 | switch (err) { | |
08ef7bd3 | 2767 | case -NFS4ERR_BADNAME: |
72de53ec BS |
2768 | err = -ENOENT; |
2769 | goto out; | |
0c2e53f1 | 2770 | case -NFS4ERR_MOVED: |
f05d147f | 2771 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
72de53ec | 2772 | goto out; |
0c2e53f1 | 2773 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
2774 | err = -EPERM; |
2775 | if (client != *clnt) | |
2776 | goto out; | |
2777 | ||
2778 | client = nfs4_create_sec_client(client, dir, name); | |
2779 | if (IS_ERR(client)) | |
2780 | return PTR_ERR(client); | |
2781 | ||
2782 | exception.retry = 1; | |
2783 | break; | |
2784 | default: | |
2785 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 2786 | } |
1da177e4 | 2787 | } while (exception.retry); |
72de53ec BS |
2788 | |
2789 | out: | |
2790 | if (err == 0) | |
2791 | *clnt = client; | |
2792 | else if (client != *clnt) | |
2793 | rpc_shutdown_client(client); | |
2794 | ||
1da177e4 LT |
2795 | return err; |
2796 | } | |
2797 | ||
80a16b21 | 2798 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, |
72de53ec BS |
2799 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2800 | { | |
2801 | int status; | |
2802 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
2803 | ||
2804 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2805 | if (client != NFS_CLIENT(dir)) { | |
2806 | rpc_shutdown_client(client); | |
2807 | nfs_fixup_secinfo_attributes(fattr); | |
2808 | } | |
2809 | return status; | |
2810 | } | |
2811 | ||
f05d147f BS |
2812 | struct rpc_clnt * |
2813 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, | |
2814 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2815 | { | |
2816 | int status; | |
2817 | struct rpc_clnt *client = rpc_clone_client(NFS_CLIENT(dir)); | |
2818 | ||
2819 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2820 | if (status < 0) { | |
2821 | rpc_shutdown_client(client); | |
2822 | return ERR_PTR(status); | |
2823 | } | |
2824 | return client; | |
2825 | } | |
2826 | ||
1da177e4 LT |
2827 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
2828 | { | |
76b32999 | 2829 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2830 | struct nfs4_accessargs args = { |
2831 | .fh = NFS_FH(inode), | |
a4980e78 | 2832 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
2833 | }; |
2834 | struct nfs4_accessres res = { | |
2835 | .server = server, | |
1da177e4 | 2836 | }; |
1da177e4 LT |
2837 | struct rpc_message msg = { |
2838 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2839 | .rpc_argp = &args, | |
2840 | .rpc_resp = &res, | |
2841 | .rpc_cred = entry->cred, | |
2842 | }; | |
2843 | int mode = entry->mask; | |
2844 | int status; | |
2845 | ||
2846 | /* | |
2847 | * Determine which access bits we want to ask for... | |
2848 | */ | |
2849 | if (mode & MAY_READ) | |
2850 | args.access |= NFS4_ACCESS_READ; | |
2851 | if (S_ISDIR(inode->i_mode)) { | |
2852 | if (mode & MAY_WRITE) | |
2853 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2854 | if (mode & MAY_EXEC) | |
2855 | args.access |= NFS4_ACCESS_LOOKUP; | |
2856 | } else { | |
2857 | if (mode & MAY_WRITE) | |
2858 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2859 | if (mode & MAY_EXEC) | |
2860 | args.access |= NFS4_ACCESS_EXECUTE; | |
2861 | } | |
c407d41a TM |
2862 | |
2863 | res.fattr = nfs_alloc_fattr(); | |
2864 | if (res.fattr == NULL) | |
2865 | return -ENOMEM; | |
2866 | ||
7c513058 | 2867 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 2868 | if (!status) { |
6168f62c | 2869 | nfs_access_set_mask(entry, res.access); |
c407d41a | 2870 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2871 | } |
c407d41a | 2872 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2873 | return status; |
2874 | } | |
2875 | ||
2876 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2877 | { | |
2878 | struct nfs4_exception exception = { }; | |
2879 | int err; | |
2880 | do { | |
2881 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2882 | _nfs4_proc_access(inode, entry), | |
2883 | &exception); | |
2884 | } while (exception.retry); | |
2885 | return err; | |
2886 | } | |
2887 | ||
2888 | /* | |
2889 | * TODO: For the time being, we don't try to get any attributes | |
2890 | * along with any of the zero-copy operations READ, READDIR, | |
2891 | * READLINK, WRITE. | |
2892 | * | |
2893 | * In the case of the first three, we want to put the GETATTR | |
2894 | * after the read-type operation -- this is because it is hard | |
2895 | * to predict the length of a GETATTR response in v4, and thus | |
2896 | * align the READ data correctly. This means that the GETATTR | |
2897 | * may end up partially falling into the page cache, and we should | |
2898 | * shift it into the 'tail' of the xdr_buf before processing. | |
2899 | * To do this efficiently, we need to know the total length | |
2900 | * of data received, which doesn't seem to be available outside | |
2901 | * of the RPC layer. | |
2902 | * | |
2903 | * In the case of WRITE, we also want to put the GETATTR after | |
2904 | * the operation -- in this case because we want to make sure | |
140150db | 2905 | * we get the post-operation mtime and size. |
1da177e4 LT |
2906 | * |
2907 | * Both of these changes to the XDR layer would in fact be quite | |
2908 | * minor, but I decided to leave them for a subsequent patch. | |
2909 | */ | |
2910 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2911 | unsigned int pgbase, unsigned int pglen) | |
2912 | { | |
2913 | struct nfs4_readlink args = { | |
2914 | .fh = NFS_FH(inode), | |
2915 | .pgbase = pgbase, | |
2916 | .pglen = pglen, | |
2917 | .pages = &page, | |
2918 | }; | |
f50c7000 | 2919 | struct nfs4_readlink_res res; |
1da177e4 LT |
2920 | struct rpc_message msg = { |
2921 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2922 | .rpc_argp = &args, | |
f50c7000 | 2923 | .rpc_resp = &res, |
1da177e4 LT |
2924 | }; |
2925 | ||
7c513058 | 2926 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2927 | } |
2928 | ||
2929 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2930 | unsigned int pgbase, unsigned int pglen) | |
2931 | { | |
2932 | struct nfs4_exception exception = { }; | |
2933 | int err; | |
2934 | do { | |
2935 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2936 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2937 | &exception); | |
2938 | } while (exception.retry); | |
2939 | return err; | |
2940 | } | |
2941 | ||
1da177e4 | 2942 | /* |
8867fe58 | 2943 | * This is just for mknod. open(O_CREAT) will always do ->open_context(). |
1da177e4 | 2944 | */ |
1da177e4 LT |
2945 | static int |
2946 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 2947 | int flags) |
1da177e4 | 2948 | { |
8867fe58 | 2949 | struct nfs_open_context *ctx; |
1da177e4 | 2950 | struct nfs4_state *state; |
1da177e4 LT |
2951 | int status = 0; |
2952 | ||
8867fe58 MS |
2953 | ctx = alloc_nfs_open_context(dentry, FMODE_READ); |
2954 | if (IS_ERR(ctx)) | |
2955 | return PTR_ERR(ctx); | |
2956 | ||
a8a5da99 | 2957 | sattr->ia_mode &= ~current_umask(); |
8626e4a4 TM |
2958 | state = nfs4_do_open(dir, dentry, ctx->mode, |
2959 | flags, sattr, ctx->cred, | |
2960 | &ctx->mdsthreshold); | |
d4d9cdcb | 2961 | d_drop(dentry); |
1da177e4 LT |
2962 | if (IS_ERR(state)) { |
2963 | status = PTR_ERR(state); | |
c0204fd2 | 2964 | goto out; |
1da177e4 | 2965 | } |
d4d9cdcb | 2966 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2967 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
8867fe58 | 2968 | ctx->state = state; |
1da177e4 | 2969 | out: |
8867fe58 | 2970 | put_nfs_open_context(ctx); |
1da177e4 LT |
2971 | return status; |
2972 | } | |
2973 | ||
2974 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2975 | { | |
16e42959 | 2976 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2977 | struct nfs_removeargs args = { |
1da177e4 | 2978 | .fh = NFS_FH(dir), |
26fe5750 | 2979 | .name = *name, |
16e42959 | 2980 | }; |
4fdc17b2 | 2981 | struct nfs_removeres res = { |
16e42959 | 2982 | .server = server, |
1da177e4 | 2983 | }; |
1da177e4 | 2984 | struct rpc_message msg = { |
4fdc17b2 TM |
2985 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
2986 | .rpc_argp = &args, | |
2987 | .rpc_resp = &res, | |
1da177e4 | 2988 | }; |
778d2817 | 2989 | int status; |
1da177e4 | 2990 | |
7c513058 | 2991 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 2992 | if (status == 0) |
16e42959 | 2993 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
2994 | return status; |
2995 | } | |
2996 | ||
2997 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2998 | { | |
2999 | struct nfs4_exception exception = { }; | |
3000 | int err; | |
3001 | do { | |
3002 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3003 | _nfs4_proc_remove(dir, name), | |
3004 | &exception); | |
3005 | } while (exception.retry); | |
3006 | return err; | |
3007 | } | |
3008 | ||
e4eff1a6 | 3009 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 3010 | { |
e4eff1a6 TM |
3011 | struct nfs_server *server = NFS_SERVER(dir); |
3012 | struct nfs_removeargs *args = msg->rpc_argp; | |
3013 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 3014 | |
e4eff1a6 | 3015 | res->server = server; |
1da177e4 | 3016 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
9d12b216 | 3017 | nfs41_init_sequence(&args->seq_args, &res->seq_res, 1); |
1da177e4 LT |
3018 | } |
3019 | ||
34e137cc BS |
3020 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
3021 | { | |
d9afbd1b TM |
3022 | nfs4_setup_sequence(NFS_SERVER(data->dir), |
3023 | &data->args.seq_args, | |
3024 | &data->res.seq_res, | |
3025 | task); | |
1da177e4 LT |
3026 | } |
3027 | ||
e4eff1a6 | 3028 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 3029 | { |
e4eff1a6 TM |
3030 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
3031 | ||
14516c3a TM |
3032 | if (!nfs4_sequence_done(task, &res->seq_res)) |
3033 | return 0; | |
9e33bed5 | 3034 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
3035 | return 0; |
3036 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 3037 | return 1; |
1da177e4 LT |
3038 | } |
3039 | ||
d3d4152a JL |
3040 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
3041 | { | |
3042 | struct nfs_server *server = NFS_SERVER(dir); | |
3043 | struct nfs_renameargs *arg = msg->rpc_argp; | |
3044 | struct nfs_renameres *res = msg->rpc_resp; | |
3045 | ||
3046 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 3047 | res->server = server; |
9d12b216 | 3048 | nfs41_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
3049 | } |
3050 | ||
c6bfa1a1 BS |
3051 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
3052 | { | |
d9afbd1b TM |
3053 | nfs4_setup_sequence(NFS_SERVER(data->old_dir), |
3054 | &data->args.seq_args, | |
3055 | &data->res.seq_res, | |
3056 | task); | |
d3d4152a JL |
3057 | } |
3058 | ||
3059 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
3060 | struct inode *new_dir) | |
3061 | { | |
3062 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
3063 | ||
3064 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
3065 | return 0; | |
3066 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
3067 | return 0; | |
3068 | ||
3069 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 3070 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
3071 | return 1; |
3072 | } | |
3073 | ||
1da177e4 LT |
3074 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
3075 | struct inode *new_dir, struct qstr *new_name) | |
3076 | { | |
6caf2c82 | 3077 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 3078 | struct nfs_renameargs arg = { |
1da177e4 LT |
3079 | .old_dir = NFS_FH(old_dir), |
3080 | .new_dir = NFS_FH(new_dir), | |
3081 | .old_name = old_name, | |
3082 | .new_name = new_name, | |
6caf2c82 | 3083 | }; |
e8582a8b | 3084 | struct nfs_renameres res = { |
6caf2c82 | 3085 | .server = server, |
1da177e4 | 3086 | }; |
1da177e4 LT |
3087 | struct rpc_message msg = { |
3088 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
3089 | .rpc_argp = &arg, | |
3090 | .rpc_resp = &res, | |
3091 | }; | |
011fff72 | 3092 | int status = -ENOMEM; |
1da177e4 | 3093 | |
7c513058 | 3094 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
3095 | if (!status) { |
3096 | update_changeattr(old_dir, &res.old_cinfo); | |
3097 | update_changeattr(new_dir, &res.new_cinfo); | |
3098 | } | |
3099 | return status; | |
3100 | } | |
3101 | ||
3102 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
3103 | struct inode *new_dir, struct qstr *new_name) | |
3104 | { | |
3105 | struct nfs4_exception exception = { }; | |
3106 | int err; | |
3107 | do { | |
3108 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
3109 | _nfs4_proc_rename(old_dir, old_name, | |
3110 | new_dir, new_name), | |
3111 | &exception); | |
3112 | } while (exception.retry); | |
3113 | return err; | |
3114 | } | |
3115 | ||
3116 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3117 | { | |
91ba2eee | 3118 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3119 | struct nfs4_link_arg arg = { |
3120 | .fh = NFS_FH(inode), | |
3121 | .dir_fh = NFS_FH(dir), | |
3122 | .name = name, | |
91ba2eee TM |
3123 | .bitmask = server->attr_bitmask, |
3124 | }; | |
91ba2eee TM |
3125 | struct nfs4_link_res res = { |
3126 | .server = server, | |
1da177e4 | 3127 | }; |
1da177e4 LT |
3128 | struct rpc_message msg = { |
3129 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
3130 | .rpc_argp = &arg, | |
91ba2eee | 3131 | .rpc_resp = &res, |
1da177e4 | 3132 | }; |
136f2627 TM |
3133 | int status = -ENOMEM; |
3134 | ||
3135 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 3136 | if (res.fattr == NULL) |
136f2627 | 3137 | goto out; |
1da177e4 | 3138 | |
7c513058 | 3139 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
3140 | if (!status) { |
3141 | update_changeattr(dir, &res.cinfo); | |
73a3d07c | 3142 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 3143 | } |
136f2627 | 3144 | out: |
136f2627 | 3145 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3146 | return status; |
3147 | } | |
3148 | ||
3149 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3150 | { | |
3151 | struct nfs4_exception exception = { }; | |
3152 | int err; | |
3153 | do { | |
3154 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3155 | _nfs4_proc_link(inode, dir, name), | |
3156 | &exception); | |
3157 | } while (exception.retry); | |
3158 | return err; | |
3159 | } | |
3160 | ||
57dc9a57 TM |
3161 | struct nfs4_createdata { |
3162 | struct rpc_message msg; | |
3163 | struct nfs4_create_arg arg; | |
3164 | struct nfs4_create_res res; | |
3165 | struct nfs_fh fh; | |
3166 | struct nfs_fattr fattr; | |
57dc9a57 TM |
3167 | }; |
3168 | ||
3169 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
3170 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
3171 | { | |
3172 | struct nfs4_createdata *data; | |
3173 | ||
3174 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3175 | if (data != NULL) { | |
3176 | struct nfs_server *server = NFS_SERVER(dir); | |
3177 | ||
3178 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
3179 | data->msg.rpc_argp = &data->arg; | |
3180 | data->msg.rpc_resp = &data->res; | |
3181 | data->arg.dir_fh = NFS_FH(dir); | |
3182 | data->arg.server = server; | |
3183 | data->arg.name = name; | |
3184 | data->arg.attrs = sattr; | |
3185 | data->arg.ftype = ftype; | |
3186 | data->arg.bitmask = server->attr_bitmask; | |
3187 | data->res.server = server; | |
3188 | data->res.fh = &data->fh; | |
3189 | data->res.fattr = &data->fattr; | |
57dc9a57 | 3190 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
3191 | } |
3192 | return data; | |
3193 | } | |
3194 | ||
3195 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3196 | { | |
7c513058 | 3197 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3198 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3199 | if (status == 0) { |
3200 | update_changeattr(dir, &data->res.dir_cinfo); | |
57dc9a57 TM |
3201 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); |
3202 | } | |
3203 | return status; | |
3204 | } | |
3205 | ||
3206 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3207 | { | |
3208 | kfree(data); | |
3209 | } | |
3210 | ||
4f390c15 | 3211 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3212 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 3213 | { |
57dc9a57 TM |
3214 | struct nfs4_createdata *data; |
3215 | int status = -ENAMETOOLONG; | |
1da177e4 | 3216 | |
94a6d753 | 3217 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 3218 | goto out; |
4f390c15 | 3219 | |
57dc9a57 TM |
3220 | status = -ENOMEM; |
3221 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
3222 | if (data == NULL) | |
3223 | goto out; | |
3224 | ||
3225 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
3226 | data->arg.u.symlink.pages = &page; | |
3227 | data->arg.u.symlink.len = len; | |
1da177e4 | 3228 | |
57dc9a57 TM |
3229 | status = nfs4_do_create(dir, dentry, data); |
3230 | ||
3231 | nfs4_free_createdata(data); | |
3232 | out: | |
1da177e4 LT |
3233 | return status; |
3234 | } | |
3235 | ||
4f390c15 | 3236 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3237 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
3238 | { |
3239 | struct nfs4_exception exception = { }; | |
3240 | int err; | |
3241 | do { | |
3242 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
3243 | _nfs4_proc_symlink(dir, dentry, page, |
3244 | len, sattr), | |
1da177e4 LT |
3245 | &exception); |
3246 | } while (exception.retry); | |
3247 | return err; | |
3248 | } | |
3249 | ||
3250 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3251 | struct iattr *sattr) | |
3252 | { | |
57dc9a57 TM |
3253 | struct nfs4_createdata *data; |
3254 | int status = -ENOMEM; | |
1da177e4 | 3255 | |
57dc9a57 TM |
3256 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3257 | if (data == NULL) | |
3258 | goto out; | |
3259 | ||
3260 | status = nfs4_do_create(dir, dentry, data); | |
3261 | ||
3262 | nfs4_free_createdata(data); | |
3263 | out: | |
1da177e4 LT |
3264 | return status; |
3265 | } | |
3266 | ||
3267 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3268 | struct iattr *sattr) | |
3269 | { | |
3270 | struct nfs4_exception exception = { }; | |
3271 | int err; | |
a8a5da99 AK |
3272 | |
3273 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3274 | do { |
3275 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3276 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
3277 | &exception); | |
3278 | } while (exception.retry); | |
3279 | return err; | |
3280 | } | |
3281 | ||
3282 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3283 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3284 | { |
3285 | struct inode *dir = dentry->d_inode; | |
3286 | struct nfs4_readdir_arg args = { | |
3287 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3288 | .pages = pages, |
1da177e4 LT |
3289 | .pgbase = 0, |
3290 | .count = count, | |
96d25e53 | 3291 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3292 | .plus = plus, |
1da177e4 LT |
3293 | }; |
3294 | struct nfs4_readdir_res res; | |
3295 | struct rpc_message msg = { | |
3296 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3297 | .rpc_argp = &args, | |
3298 | .rpc_resp = &res, | |
3299 | .rpc_cred = cred, | |
3300 | }; | |
3301 | int status; | |
3302 | ||
3110ff80 | 3303 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
3304 | dentry->d_parent->d_name.name, |
3305 | dentry->d_name.name, | |
3306 | (unsigned long long)cookie); | |
c3f52af3 | 3307 | nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args); |
1da177e4 | 3308 | res.pgbase = args.pgbase; |
7c513058 | 3309 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3310 | if (status >= 0) { |
c3f52af3 | 3311 | memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3312 | status += args.pgbase; |
3313 | } | |
c4812998 TM |
3314 | |
3315 | nfs_invalidate_atime(dir); | |
3316 | ||
3110ff80 | 3317 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3318 | return status; |
3319 | } | |
3320 | ||
3321 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3322 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3323 | { |
3324 | struct nfs4_exception exception = { }; | |
3325 | int err; | |
3326 | do { | |
3327 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
3328 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 3329 | pages, count, plus), |
1da177e4 LT |
3330 | &exception); |
3331 | } while (exception.retry); | |
3332 | return err; | |
3333 | } | |
3334 | ||
3335 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3336 | struct iattr *sattr, dev_t rdev) | |
3337 | { | |
57dc9a57 TM |
3338 | struct nfs4_createdata *data; |
3339 | int mode = sattr->ia_mode; | |
3340 | int status = -ENOMEM; | |
1da177e4 | 3341 | |
57dc9a57 TM |
3342 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); |
3343 | if (data == NULL) | |
3344 | goto out; | |
3345 | ||
1da177e4 | 3346 | if (S_ISFIFO(mode)) |
57dc9a57 | 3347 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3348 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3349 | data->arg.ftype = NF4BLK; |
3350 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3351 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3352 | } |
3353 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3354 | data->arg.ftype = NF4CHR; |
3355 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3356 | data->arg.u.device.specdata2 = MINOR(rdev); | |
4ea8fed5 TM |
3357 | } else if (!S_ISSOCK(mode)) { |
3358 | status = -EINVAL; | |
3359 | goto out_free; | |
1da177e4 | 3360 | } |
1da177e4 | 3361 | |
57dc9a57 | 3362 | status = nfs4_do_create(dir, dentry, data); |
4ea8fed5 | 3363 | out_free: |
57dc9a57 TM |
3364 | nfs4_free_createdata(data); |
3365 | out: | |
1da177e4 LT |
3366 | return status; |
3367 | } | |
3368 | ||
3369 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3370 | struct iattr *sattr, dev_t rdev) | |
3371 | { | |
3372 | struct nfs4_exception exception = { }; | |
3373 | int err; | |
a8a5da99 AK |
3374 | |
3375 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3376 | do { |
3377 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3378 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
3379 | &exception); | |
3380 | } while (exception.retry); | |
3381 | return err; | |
3382 | } | |
3383 | ||
3384 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3385 | struct nfs_fsstat *fsstat) | |
3386 | { | |
3387 | struct nfs4_statfs_arg args = { | |
3388 | .fh = fhandle, | |
3389 | .bitmask = server->attr_bitmask, | |
3390 | }; | |
24ad148a BH |
3391 | struct nfs4_statfs_res res = { |
3392 | .fsstat = fsstat, | |
3393 | }; | |
1da177e4 LT |
3394 | struct rpc_message msg = { |
3395 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3396 | .rpc_argp = &args, | |
24ad148a | 3397 | .rpc_resp = &res, |
1da177e4 LT |
3398 | }; |
3399 | ||
0e574af1 | 3400 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3401 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3402 | } |
3403 | ||
3404 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3405 | { | |
3406 | struct nfs4_exception exception = { }; | |
3407 | int err; | |
3408 | do { | |
3409 | err = nfs4_handle_exception(server, | |
3410 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3411 | &exception); | |
3412 | } while (exception.retry); | |
3413 | return err; | |
3414 | } | |
3415 | ||
3416 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3417 | struct nfs_fsinfo *fsinfo) | |
3418 | { | |
3419 | struct nfs4_fsinfo_arg args = { | |
3420 | .fh = fhandle, | |
3421 | .bitmask = server->attr_bitmask, | |
3422 | }; | |
3dda5e43 BH |
3423 | struct nfs4_fsinfo_res res = { |
3424 | .fsinfo = fsinfo, | |
3425 | }; | |
1da177e4 LT |
3426 | struct rpc_message msg = { |
3427 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3428 | .rpc_argp = &args, | |
3dda5e43 | 3429 | .rpc_resp = &res, |
1da177e4 LT |
3430 | }; |
3431 | ||
7c513058 | 3432 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3433 | } |
3434 | ||
3435 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3436 | { | |
3437 | struct nfs4_exception exception = { }; | |
3438 | int err; | |
3439 | ||
3440 | do { | |
3441 | err = nfs4_handle_exception(server, | |
3442 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
3443 | &exception); | |
3444 | } while (exception.retry); | |
3445 | return err; | |
3446 | } | |
3447 | ||
3448 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3449 | { | |
e38eb650 BS |
3450 | int error; |
3451 | ||
0e574af1 | 3452 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 | 3453 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
dc182549 PT |
3454 | if (error == 0) { |
3455 | /* block layout checks this! */ | |
3456 | server->pnfs_blksize = fsinfo->blksize; | |
e38eb650 | 3457 | set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype); |
dc182549 | 3458 | } |
e38eb650 BS |
3459 | |
3460 | return error; | |
1da177e4 LT |
3461 | } |
3462 | ||
3463 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3464 | struct nfs_pathconf *pathconf) | |
3465 | { | |
3466 | struct nfs4_pathconf_arg args = { | |
3467 | .fh = fhandle, | |
3468 | .bitmask = server->attr_bitmask, | |
3469 | }; | |
d45b2989 BH |
3470 | struct nfs4_pathconf_res res = { |
3471 | .pathconf = pathconf, | |
3472 | }; | |
1da177e4 LT |
3473 | struct rpc_message msg = { |
3474 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3475 | .rpc_argp = &args, | |
d45b2989 | 3476 | .rpc_resp = &res, |
1da177e4 LT |
3477 | }; |
3478 | ||
3479 | /* None of the pathconf attributes are mandatory to implement */ | |
3480 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3481 | memset(pathconf, 0, sizeof(*pathconf)); | |
3482 | return 0; | |
3483 | } | |
3484 | ||
0e574af1 | 3485 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3486 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3487 | } |
3488 | ||
3489 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3490 | struct nfs_pathconf *pathconf) | |
3491 | { | |
3492 | struct nfs4_exception exception = { }; | |
3493 | int err; | |
3494 | ||
3495 | do { | |
3496 | err = nfs4_handle_exception(server, | |
3497 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3498 | &exception); | |
3499 | } while (exception.retry); | |
3500 | return err; | |
3501 | } | |
3502 | ||
5521abfd | 3503 | int nfs4_set_rw_stateid(nfs4_stateid *stateid, |
9b206149 TM |
3504 | const struct nfs_open_context *ctx, |
3505 | const struct nfs_lock_context *l_ctx, | |
3506 | fmode_t fmode) | |
3507 | { | |
3508 | const struct nfs_lockowner *lockowner = NULL; | |
3509 | ||
3510 | if (l_ctx != NULL) | |
3511 | lockowner = &l_ctx->lockowner; | |
5521abfd | 3512 | return nfs4_select_rw_stateid(stateid, ctx->state, fmode, lockowner); |
9b206149 TM |
3513 | } |
3514 | EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid); | |
3515 | ||
5521abfd TM |
3516 | static bool nfs4_stateid_is_current(nfs4_stateid *stateid, |
3517 | const struct nfs_open_context *ctx, | |
3518 | const struct nfs_lock_context *l_ctx, | |
3519 | fmode_t fmode) | |
3520 | { | |
3521 | nfs4_stateid current_stateid; | |
3522 | ||
3523 | if (nfs4_set_rw_stateid(¤t_stateid, ctx, l_ctx, fmode)) | |
3524 | return false; | |
3525 | return nfs4_stateid_match(stateid, ¤t_stateid); | |
3526 | } | |
3527 | ||
3528 | static bool nfs4_error_stateid_expired(int err) | |
3529 | { | |
3530 | switch (err) { | |
3531 | case -NFS4ERR_DELEG_REVOKED: | |
3532 | case -NFS4ERR_ADMIN_REVOKED: | |
3533 | case -NFS4ERR_BAD_STATEID: | |
3534 | case -NFS4ERR_STALE_STATEID: | |
3535 | case -NFS4ERR_OLD_STATEID: | |
3536 | case -NFS4ERR_OPENMODE: | |
3537 | case -NFS4ERR_EXPIRED: | |
3538 | return true; | |
3539 | } | |
3540 | return false; | |
3541 | } | |
3542 | ||
d20581aa BH |
3543 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3544 | { | |
cd841605 | 3545 | nfs_invalidate_atime(data->header->inode); |
d20581aa BH |
3546 | } |
3547 | ||
cbdabc7f | 3548 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3549 | { |
cd841605 | 3550 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
1da177e4 | 3551 | |
9e33bed5 | 3552 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3553 | rpc_restart_call_prepare(task); |
ec06c096 | 3554 | return -EAGAIN; |
1da177e4 | 3555 | } |
8850df99 | 3556 | |
d20581aa | 3557 | __nfs4_read_done_cb(data); |
1da177e4 | 3558 | if (task->tk_status > 0) |
ec06c096 TM |
3559 | renew_lease(server, data->timestamp); |
3560 | return 0; | |
1da177e4 LT |
3561 | } |
3562 | ||
5521abfd TM |
3563 | static bool nfs4_read_stateid_changed(struct rpc_task *task, |
3564 | struct nfs_readargs *args) | |
3565 | { | |
3566 | ||
3567 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
3568 | nfs4_stateid_is_current(&args->stateid, | |
3569 | args->context, | |
3570 | args->lock_context, | |
3571 | FMODE_READ)) | |
3572 | return false; | |
3573 | rpc_restart_call_prepare(task); | |
3574 | return true; | |
3575 | } | |
3576 | ||
cbdabc7f AA |
3577 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3578 | { | |
3579 | ||
3580 | dprintk("--> %s\n", __func__); | |
3581 | ||
3582 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3583 | return -EAGAIN; | |
5521abfd TM |
3584 | if (nfs4_read_stateid_changed(task, &data->args)) |
3585 | return -EAGAIN; | |
d20581aa BH |
3586 | return data->read_done_cb ? data->read_done_cb(task, data) : |
3587 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
3588 | } |
3589 | ||
bdc7f021 | 3590 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3591 | { |
1da177e4 | 3592 | data->timestamp = jiffies; |
cbdabc7f | 3593 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3594 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
9d12b216 | 3595 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
1da177e4 LT |
3596 | } |
3597 | ||
ea7c3303 BS |
3598 | static void nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) |
3599 | { | |
9b206149 | 3600 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
d9afbd1b TM |
3601 | &data->args.seq_args, |
3602 | &data->res.seq_res, | |
9b206149 TM |
3603 | task)) |
3604 | return; | |
3605 | nfs4_set_rw_stateid(&data->args.stateid, data->args.context, | |
3606 | data->args.lock_context, FMODE_READ); | |
1da177e4 LT |
3607 | } |
3608 | ||
b029bc9b | 3609 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3610 | { |
cd841605 | 3611 | struct inode *inode = data->header->inode; |
1da177e4 | 3612 | |
9e33bed5 | 3613 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3614 | rpc_restart_call_prepare(task); |
788e7a89 | 3615 | return -EAGAIN; |
1da177e4 | 3616 | } |
4f9838c7 | 3617 | if (task->tk_status >= 0) { |
1da177e4 | 3618 | renew_lease(NFS_SERVER(inode), data->timestamp); |
5a37f851 | 3619 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); |
4f9838c7 | 3620 | } |
788e7a89 | 3621 | return 0; |
1da177e4 LT |
3622 | } |
3623 | ||
5521abfd TM |
3624 | static bool nfs4_write_stateid_changed(struct rpc_task *task, |
3625 | struct nfs_writeargs *args) | |
3626 | { | |
3627 | ||
3628 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
3629 | nfs4_stateid_is_current(&args->stateid, | |
3630 | args->context, | |
3631 | args->lock_context, | |
3632 | FMODE_WRITE)) | |
3633 | return false; | |
3634 | rpc_restart_call_prepare(task); | |
3635 | return true; | |
3636 | } | |
3637 | ||
b029bc9b FI |
3638 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3639 | { | |
3640 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3641 | return -EAGAIN; | |
5521abfd TM |
3642 | if (nfs4_write_stateid_changed(task, &data->args)) |
3643 | return -EAGAIN; | |
d20581aa BH |
3644 | return data->write_done_cb ? data->write_done_cb(task, data) : |
3645 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
3646 | } |
3647 | ||
5a37f851 TM |
3648 | static |
3649 | bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data *data) | |
a69aef14 | 3650 | { |
5a37f851 TM |
3651 | const struct nfs_pgio_header *hdr = data->header; |
3652 | ||
3653 | /* Don't request attributes for pNFS or O_DIRECT writes */ | |
3654 | if (data->ds_clp != NULL || hdr->dreq != NULL) | |
3655 | return false; | |
3656 | /* Otherwise, request attributes if and only if we don't hold | |
3657 | * a delegation | |
3658 | */ | |
011e2a7f | 3659 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 3660 | } |
a69aef14 | 3661 | |
bdc7f021 | 3662 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3663 | { |
cd841605 | 3664 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
bdc7f021 | 3665 | |
5a37f851 | 3666 | if (!nfs4_write_need_cache_consistency_data(data)) { |
7ffd1064 FI |
3667 | data->args.bitmask = NULL; |
3668 | data->res.fattr = NULL; | |
3669 | } else | |
3670 | data->args.bitmask = server->cache_consistency_bitmask; | |
5a37f851 | 3671 | |
b029bc9b FI |
3672 | if (!data->write_done_cb) |
3673 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3674 | data->res.server = server; |
1da177e4 LT |
3675 | data->timestamp = jiffies; |
3676 | ||
bdc7f021 | 3677 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
9d12b216 | 3678 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3679 | } |
3680 | ||
c6cb80d0 BS |
3681 | static void nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) |
3682 | { | |
9b206149 | 3683 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
d9afbd1b TM |
3684 | &data->args.seq_args, |
3685 | &data->res.seq_res, | |
9b206149 TM |
3686 | task)) |
3687 | return; | |
3688 | nfs4_set_rw_stateid(&data->args.stateid, data->args.context, | |
3689 | data->args.lock_context, FMODE_WRITE); | |
1da177e4 LT |
3690 | } |
3691 | ||
0b7c0153 | 3692 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 | 3693 | { |
d9afbd1b TM |
3694 | nfs4_setup_sequence(NFS_SERVER(data->inode), |
3695 | &data->args.seq_args, | |
3696 | &data->res.seq_res, | |
3697 | task); | |
1da177e4 LT |
3698 | } |
3699 | ||
0b7c0153 | 3700 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 3701 | { |
1da177e4 | 3702 | struct inode *inode = data->inode; |
14516c3a | 3703 | |
9e33bed5 | 3704 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
d00c5d43 | 3705 | rpc_restart_call_prepare(task); |
788e7a89 | 3706 | return -EAGAIN; |
1da177e4 | 3707 | } |
788e7a89 | 3708 | return 0; |
1da177e4 LT |
3709 | } |
3710 | ||
0b7c0153 | 3711 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
3712 | { |
3713 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3714 | return -EAGAIN; | |
0b7c0153 | 3715 | return data->commit_done_cb(task, data); |
5f452431 FI |
3716 | } |
3717 | ||
0b7c0153 | 3718 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 3719 | { |
788e7a89 | 3720 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 3721 | |
0b7c0153 FI |
3722 | if (data->commit_done_cb == NULL) |
3723 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 3724 | data->res.server = server; |
bdc7f021 | 3725 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
9d12b216 | 3726 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3727 | } |
3728 | ||
9bc4e3ca CL |
3729 | struct nfs4_renewdata { |
3730 | struct nfs_client *client; | |
3731 | unsigned long timestamp; | |
3732 | }; | |
3733 | ||
1da177e4 LT |
3734 | /* |
3735 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3736 | * standalone procedure for queueing an asynchronous RENEW. | |
3737 | */ | |
9bc4e3ca | 3738 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3739 | { |
9bc4e3ca CL |
3740 | struct nfs4_renewdata *data = calldata; |
3741 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3742 | |
0851de06 AB |
3743 | if (atomic_read(&clp->cl_count) > 1) |
3744 | nfs4_schedule_state_renewal(clp); | |
3745 | nfs_put_client(clp); | |
9bc4e3ca | 3746 | kfree(data); |
dc96aef9 AB |
3747 | } |
3748 | ||
9bc4e3ca | 3749 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3750 | { |
9bc4e3ca CL |
3751 | struct nfs4_renewdata *data = calldata; |
3752 | struct nfs_client *clp = data->client; | |
3753 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3754 | |
3755 | if (task->tk_status < 0) { | |
95baa25c | 3756 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
3757 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
3758 | return; | |
3759 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 3760 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
3761 | return; |
3762 | } | |
3763 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 3764 | } |
452e9352 | 3765 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3766 | } |
3767 | ||
963d8fe5 TM |
3768 | static const struct rpc_call_ops nfs4_renew_ops = { |
3769 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3770 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3771 | }; |
3772 | ||
2f60ea6b | 3773 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
3774 | { |
3775 | struct rpc_message msg = { | |
3776 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3777 | .rpc_argp = clp, | |
b4454fe1 | 3778 | .rpc_cred = cred, |
1da177e4 | 3779 | }; |
9bc4e3ca | 3780 | struct nfs4_renewdata *data; |
1da177e4 | 3781 | |
2f60ea6b TM |
3782 | if (renew_flags == 0) |
3783 | return 0; | |
0851de06 AB |
3784 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3785 | return -EIO; | |
b569ad34 | 3786 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
3787 | if (data == NULL) |
3788 | return -ENOMEM; | |
3789 | data->client = clp; | |
3790 | data->timestamp = jiffies; | |
1da177e4 | 3791 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, |
9bc4e3ca | 3792 | &nfs4_renew_ops, data); |
1da177e4 LT |
3793 | } |
3794 | ||
8534d4ec | 3795 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3796 | { |
3797 | struct rpc_message msg = { | |
3798 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3799 | .rpc_argp = clp, | |
b4454fe1 | 3800 | .rpc_cred = cred, |
1da177e4 LT |
3801 | }; |
3802 | unsigned long now = jiffies; | |
3803 | int status; | |
3804 | ||
3805 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3806 | if (status < 0) | |
3807 | return status; | |
452e9352 | 3808 | do_renew_lease(clp, now); |
1da177e4 LT |
3809 | return 0; |
3810 | } | |
3811 | ||
aa1870af BF |
3812 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3813 | { | |
3814 | return (server->caps & NFS_CAP_ACLS) | |
3815 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3816 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3817 | } | |
3818 | ||
21f498c2 TM |
3819 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that |
3820 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on | |
aa1870af BF |
3821 | * the stack. |
3822 | */ | |
21f498c2 | 3823 | #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) |
aa1870af | 3824 | |
e9e3d724 NH |
3825 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
3826 | struct page **pages, unsigned int *pgbase) | |
3827 | { | |
3828 | struct page *newpage, **spages; | |
3829 | int rc = 0; | |
3830 | size_t len; | |
3831 | spages = pages; | |
3832 | ||
3833 | do { | |
21f498c2 | 3834 | len = min_t(size_t, PAGE_SIZE, buflen); |
e9e3d724 NH |
3835 | newpage = alloc_page(GFP_KERNEL); |
3836 | ||
3837 | if (newpage == NULL) | |
3838 | goto unwind; | |
3839 | memcpy(page_address(newpage), buf, len); | |
3840 | buf += len; | |
3841 | buflen -= len; | |
3842 | *pages++ = newpage; | |
3843 | rc++; | |
3844 | } while (buflen != 0); | |
3845 | ||
3846 | return rc; | |
3847 | ||
3848 | unwind: | |
3849 | for(; rc > 0; rc--) | |
3850 | __free_page(spages[rc-1]); | |
3851 | return -ENOMEM; | |
3852 | } | |
3853 | ||
e50a1c2e BF |
3854 | struct nfs4_cached_acl { |
3855 | int cached; | |
3856 | size_t len; | |
3e9d4154 | 3857 | char data[0]; |
e50a1c2e BF |
3858 | }; |
3859 | ||
3860 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3861 | { | |
3862 | struct nfs_inode *nfsi = NFS_I(inode); | |
3863 | ||
3864 | spin_lock(&inode->i_lock); | |
3865 | kfree(nfsi->nfs4_acl); | |
3866 | nfsi->nfs4_acl = acl; | |
3867 | spin_unlock(&inode->i_lock); | |
3868 | } | |
3869 | ||
3870 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3871 | { | |
3872 | nfs4_set_cached_acl(inode, NULL); | |
3873 | } | |
3874 | ||
3875 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3876 | { | |
3877 | struct nfs_inode *nfsi = NFS_I(inode); | |
3878 | struct nfs4_cached_acl *acl; | |
3879 | int ret = -ENOENT; | |
3880 | ||
3881 | spin_lock(&inode->i_lock); | |
3882 | acl = nfsi->nfs4_acl; | |
3883 | if (acl == NULL) | |
3884 | goto out; | |
3885 | if (buf == NULL) /* user is just asking for length */ | |
3886 | goto out_len; | |
3887 | if (acl->cached == 0) | |
3888 | goto out; | |
3889 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3890 | if (acl->len > buflen) | |
3891 | goto out; | |
3892 | memcpy(buf, acl->data, acl->len); | |
3893 | out_len: | |
3894 | ret = acl->len; | |
3895 | out: | |
3896 | spin_unlock(&inode->i_lock); | |
3897 | return ret; | |
3898 | } | |
3899 | ||
5794d21e | 3900 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
3901 | { |
3902 | struct nfs4_cached_acl *acl; | |
b291f1b1 | 3903 | size_t buflen = sizeof(*acl) + acl_len; |
e50a1c2e | 3904 | |
1f1ea6c2 | 3905 | if (buflen <= PAGE_SIZE) { |
b291f1b1 | 3906 | acl = kmalloc(buflen, GFP_KERNEL); |
e50a1c2e BF |
3907 | if (acl == NULL) |
3908 | goto out; | |
3909 | acl->cached = 1; | |
5794d21e | 3910 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
3911 | } else { |
3912 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3913 | if (acl == NULL) | |
3914 | goto out; | |
3915 | acl->cached = 0; | |
3916 | } | |
3917 | acl->len = acl_len; | |
3918 | out: | |
3919 | nfs4_set_cached_acl(inode, acl); | |
3920 | } | |
3921 | ||
bf118a34 AA |
3922 | /* |
3923 | * The getxattr API returns the required buffer length when called with a | |
3924 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
3925 | * the required buf. On a NULL buf, we send a page of data to the server | |
3926 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
3927 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
3928 | * the cache. If not so, we throw away the page, and cache the required | |
3929 | * length. The next getxattr call will then produce another round trip to | |
3930 | * the server, this time with the input buf of the required size. | |
3931 | */ | |
16b4289c | 3932 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3933 | { |
bf118a34 | 3934 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
3935 | struct nfs_getaclargs args = { |
3936 | .fh = NFS_FH(inode), | |
3937 | .acl_pages = pages, | |
3938 | .acl_len = buflen, | |
3939 | }; | |
663c79b3 BH |
3940 | struct nfs_getaclres res = { |
3941 | .acl_len = buflen, | |
3942 | }; | |
aa1870af BF |
3943 | struct rpc_message msg = { |
3944 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3945 | .rpc_argp = &args, | |
663c79b3 | 3946 | .rpc_resp = &res, |
aa1870af | 3947 | }; |
21f498c2 TM |
3948 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
3949 | int ret = -ENOMEM, i; | |
aa1870af | 3950 | |
bf118a34 AA |
3951 | /* As long as we're doing a round trip to the server anyway, |
3952 | * let's be prepared for a page of acl data. */ | |
3953 | if (npages == 0) | |
3954 | npages = 1; | |
21f498c2 TM |
3955 | if (npages > ARRAY_SIZE(pages)) |
3956 | return -ERANGE; | |
5a006899 | 3957 | |
bf118a34 AA |
3958 | for (i = 0; i < npages; i++) { |
3959 | pages[i] = alloc_page(GFP_KERNEL); | |
3960 | if (!pages[i]) | |
3961 | goto out_free; | |
e50a1c2e | 3962 | } |
5a006899 SP |
3963 | |
3964 | /* for decoding across pages */ | |
3965 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
3966 | if (!res.acl_scratch) | |
3967 | goto out_free; | |
3968 | ||
bf118a34 AA |
3969 | args.acl_len = npages * PAGE_SIZE; |
3970 | args.acl_pgbase = 0; | |
5a006899 | 3971 | |
de040bec | 3972 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
3973 | __func__, buf, buflen, npages, args.acl_len); |
3974 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
3975 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
3976 | if (ret) |
3977 | goto out_free; | |
bf118a34 | 3978 | |
1f1ea6c2 TM |
3979 | /* Handle the case where the passed-in buffer is too short */ |
3980 | if (res.acl_flags & NFS4_ACL_TRUNC) { | |
3981 | /* Did the user only issue a request for the acl length? */ | |
3982 | if (buf == NULL) | |
3983 | goto out_ok; | |
e50a1c2e | 3984 | ret = -ERANGE; |
1f1ea6c2 | 3985 | goto out_free; |
e50a1c2e | 3986 | } |
1f1ea6c2 | 3987 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 SW |
3988 | if (buf) { |
3989 | if (res.acl_len > buflen) { | |
3990 | ret = -ERANGE; | |
3991 | goto out_free; | |
3992 | } | |
1f1ea6c2 | 3993 | _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 | 3994 | } |
1f1ea6c2 TM |
3995 | out_ok: |
3996 | ret = res.acl_len; | |
e50a1c2e | 3997 | out_free: |
bf118a34 AA |
3998 | for (i = 0; i < npages; i++) |
3999 | if (pages[i]) | |
4000 | __free_page(pages[i]); | |
331818f1 TM |
4001 | if (res.acl_scratch) |
4002 | __free_page(res.acl_scratch); | |
aa1870af BF |
4003 | return ret; |
4004 | } | |
4005 | ||
16b4289c TM |
4006 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
4007 | { | |
4008 | struct nfs4_exception exception = { }; | |
4009 | ssize_t ret; | |
4010 | do { | |
4011 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
4012 | if (ret >= 0) | |
4013 | break; | |
4014 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
4015 | } while (exception.retry); | |
4016 | return ret; | |
4017 | } | |
4018 | ||
e50a1c2e BF |
4019 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
4020 | { | |
4021 | struct nfs_server *server = NFS_SERVER(inode); | |
4022 | int ret; | |
4023 | ||
4024 | if (!nfs4_server_supports_acls(server)) | |
4025 | return -EOPNOTSUPP; | |
4026 | ret = nfs_revalidate_inode(server, inode); | |
4027 | if (ret < 0) | |
4028 | return ret; | |
08a22b39 AK |
4029 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
4030 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
4031 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
4032 | if (ret != -ENOENT) | |
bf118a34 AA |
4033 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
4034 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
4035 | return ret; |
4036 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
4037 | } | |
4038 | ||
16b4289c | 4039 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
4040 | { |
4041 | struct nfs_server *server = NFS_SERVER(inode); | |
4042 | struct page *pages[NFS4ACL_MAXPAGES]; | |
4043 | struct nfs_setaclargs arg = { | |
4044 | .fh = NFS_FH(inode), | |
4045 | .acl_pages = pages, | |
4046 | .acl_len = buflen, | |
4047 | }; | |
73c403a9 | 4048 | struct nfs_setaclres res; |
4b580ee3 BF |
4049 | struct rpc_message msg = { |
4050 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
4051 | .rpc_argp = &arg, | |
73c403a9 | 4052 | .rpc_resp = &res, |
4b580ee3 | 4053 | }; |
21f498c2 | 4054 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
e9e3d724 | 4055 | int ret, i; |
4b580ee3 BF |
4056 | |
4057 | if (!nfs4_server_supports_acls(server)) | |
4058 | return -EOPNOTSUPP; | |
21f498c2 TM |
4059 | if (npages > ARRAY_SIZE(pages)) |
4060 | return -ERANGE; | |
e9e3d724 NH |
4061 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
4062 | if (i < 0) | |
4063 | return i; | |
57ec14c5 | 4064 | nfs4_inode_return_delegation(inode); |
7c513058 | 4065 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
4066 | |
4067 | /* | |
4068 | * Free each page after tx, so the only ref left is | |
4069 | * held by the network stack | |
4070 | */ | |
4071 | for (; i > 0; i--) | |
4072 | put_page(pages[i-1]); | |
4073 | ||
08a22b39 AK |
4074 | /* |
4075 | * Acl update can result in inode attribute update. | |
4076 | * so mark the attribute cache invalid. | |
4077 | */ | |
4078 | spin_lock(&inode->i_lock); | |
4079 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
4080 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
4081 | nfs_access_zap_cache(inode); |
4082 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
4083 | return ret; |
4084 | } | |
4085 | ||
16b4289c TM |
4086 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4087 | { | |
4088 | struct nfs4_exception exception = { }; | |
4089 | int err; | |
4090 | do { | |
4091 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
4092 | __nfs4_proc_set_acl(inode, buf, buflen), | |
4093 | &exception); | |
4094 | } while (exception.retry); | |
4095 | return err; | |
4096 | } | |
4097 | ||
1da177e4 | 4098 | static int |
aa5190d0 | 4099 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 4100 | { |
aa5190d0 TM |
4101 | struct nfs_client *clp = server->nfs_client; |
4102 | ||
4103 | if (task->tk_status >= 0) | |
1da177e4 LT |
4104 | return 0; |
4105 | switch(task->tk_status) { | |
a1d0b5ee | 4106 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
4107 | case -NFS4ERR_ADMIN_REVOKED: |
4108 | case -NFS4ERR_BAD_STATEID: | |
14977489 TM |
4109 | if (state == NULL) |
4110 | break; | |
4111 | nfs_remove_bad_delegation(state->inode); | |
9e33bed5 TM |
4112 | case -NFS4ERR_OPENMODE: |
4113 | if (state == NULL) | |
4114 | break; | |
5d422301 TM |
4115 | if (nfs4_schedule_stateid_recovery(server, state) < 0) |
4116 | goto stateid_invalid; | |
0400a6b0 | 4117 | goto wait_on_recovery; |
0ced63d1 | 4118 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
4119 | if (state != NULL) { |
4120 | if (nfs4_schedule_stateid_recovery(server, state) < 0) | |
4121 | goto stateid_invalid; | |
4122 | } | |
1da177e4 | 4123 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 4124 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
4125 | nfs4_schedule_lease_recovery(clp); |
4126 | goto wait_on_recovery; | |
4745e315 AA |
4127 | #if defined(CONFIG_NFS_V4_1) |
4128 | case -NFS4ERR_BADSESSION: | |
4129 | case -NFS4ERR_BADSLOT: | |
4130 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4131 | case -NFS4ERR_DEADSESSION: | |
4132 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4133 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
4134 | case -NFS4ERR_SEQ_MISORDERED: | |
4135 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
4136 | task->tk_status); | |
9f594791 | 4137 | nfs4_schedule_session_recovery(clp->cl_session, task->tk_status); |
4745e315 AA |
4138 | task->tk_status = 0; |
4139 | return -EAGAIN; | |
4140 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 4141 | case -NFS4ERR_DELAY: |
aa5190d0 | 4142 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 4143 | case -NFS4ERR_GRACE: |
1da177e4 LT |
4144 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
4145 | task->tk_status = 0; | |
4146 | return -EAGAIN; | |
a8a4ae3a | 4147 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
4148 | case -NFS4ERR_OLD_STATEID: |
4149 | task->tk_status = 0; | |
4150 | return -EAGAIN; | |
4151 | } | |
4152 | task->tk_status = nfs4_map_errors(task->tk_status); | |
4153 | return 0; | |
5d422301 TM |
4154 | stateid_invalid: |
4155 | task->tk_status = -EIO; | |
4156 | return 0; | |
0400a6b0 | 4157 | wait_on_recovery: |
a2c0b9e2 | 4158 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
4159 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
4160 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
4161 | task->tk_status = 0; | |
4162 | return -EAGAIN; | |
1da177e4 LT |
4163 | } |
4164 | ||
f092075d CL |
4165 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
4166 | nfs4_verifier *bootverf) | |
cd93710e CL |
4167 | { |
4168 | __be32 verf[2]; | |
4169 | ||
2c820d9a CL |
4170 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
4171 | /* An impossible timestamp guarantees this value | |
4172 | * will never match a generated boot time. */ | |
4173 | verf[0] = 0; | |
4174 | verf[1] = (__be32)(NSEC_PER_SEC + 1); | |
4175 | } else { | |
f092075d CL |
4176 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
4177 | verf[0] = (__be32)nn->boot_time.tv_sec; | |
4178 | verf[1] = (__be32)nn->boot_time.tv_nsec; | |
2c820d9a | 4179 | } |
cd93710e CL |
4180 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
4181 | } | |
4182 | ||
e984a55a CL |
4183 | static unsigned int |
4184 | nfs4_init_nonuniform_client_string(const struct nfs_client *clp, | |
4185 | char *buf, size_t len) | |
4186 | { | |
4187 | unsigned int result; | |
4188 | ||
4189 | rcu_read_lock(); | |
4190 | result = scnprintf(buf, len, "Linux NFSv4.0 %s/%s %s", | |
4191 | clp->cl_ipaddr, | |
4192 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4193 | RPC_DISPLAY_ADDR), | |
4194 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4195 | RPC_DISPLAY_PROTO)); | |
4196 | rcu_read_unlock(); | |
4197 | return result; | |
4198 | } | |
4199 | ||
4200 | static unsigned int | |
4201 | nfs4_init_uniform_client_string(const struct nfs_client *clp, | |
4202 | char *buf, size_t len) | |
4203 | { | |
6f2ea7f2 CL |
4204 | char *nodename = clp->cl_rpcclient->cl_nodename; |
4205 | ||
4206 | if (nfs4_client_id_uniquifier[0] != '\0') | |
4207 | nodename = nfs4_client_id_uniquifier; | |
e984a55a CL |
4208 | return scnprintf(buf, len, "Linux NFSv%u.%u %s", |
4209 | clp->rpc_ops->version, clp->cl_minorversion, | |
6f2ea7f2 | 4210 | nodename); |
e984a55a CL |
4211 | } |
4212 | ||
6bbb4ae8 CL |
4213 | /** |
4214 | * nfs4_proc_setclientid - Negotiate client ID | |
4215 | * @clp: state data structure | |
4216 | * @program: RPC program for NFSv4 callback service | |
4217 | * @port: IP port number for NFS4 callback service | |
4218 | * @cred: RPC credential to use for this call | |
4219 | * @res: where to place the result | |
4220 | * | |
4221 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4222 | */ | |
bb8b27e5 TM |
4223 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
4224 | unsigned short port, struct rpc_cred *cred, | |
4225 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
4226 | { |
4227 | nfs4_verifier sc_verifier; | |
4228 | struct nfs4_setclientid setclientid = { | |
4229 | .sc_verifier = &sc_verifier, | |
4230 | .sc_prog = program, | |
f4eecd5d | 4231 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
4232 | }; |
4233 | struct rpc_message msg = { | |
4234 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
4235 | .rpc_argp = &setclientid, | |
bb8b27e5 | 4236 | .rpc_resp = res, |
286d7d6a | 4237 | .rpc_cred = cred, |
1da177e4 | 4238 | }; |
6bbb4ae8 | 4239 | int status; |
1da177e4 | 4240 | |
de734831 | 4241 | /* nfs_client_id4 */ |
f092075d | 4242 | nfs4_init_boot_verifier(clp, &sc_verifier); |
e984a55a CL |
4243 | if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags)) |
4244 | setclientid.sc_name_len = | |
4245 | nfs4_init_uniform_client_string(clp, | |
4246 | setclientid.sc_name, | |
4247 | sizeof(setclientid.sc_name)); | |
4248 | else | |
4249 | setclientid.sc_name_len = | |
4250 | nfs4_init_nonuniform_client_string(clp, | |
4251 | setclientid.sc_name, | |
4252 | sizeof(setclientid.sc_name)); | |
de734831 | 4253 | /* cb_client4 */ |
e984a55a | 4254 | rcu_read_lock(); |
de734831 | 4255 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, |
d4d3c507 CL |
4256 | sizeof(setclientid.sc_netid), |
4257 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4258 | RPC_DISPLAY_NETID)); | |
de734831 CL |
4259 | rcu_read_unlock(); |
4260 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, | |
d4d3c507 | 4261 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
4262 | clp->cl_ipaddr, port >> 8, port & 255); |
4263 | ||
6bbb4ae8 CL |
4264 | dprintk("NFS call setclientid auth=%s, '%.*s'\n", |
4265 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4266 | setclientid.sc_name_len, setclientid.sc_name); | |
4267 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
4268 | dprintk("NFS reply setclientid: %d\n", status); | |
4269 | return status; | |
1da177e4 LT |
4270 | } |
4271 | ||
6bbb4ae8 CL |
4272 | /** |
4273 | * nfs4_proc_setclientid_confirm - Confirm client ID | |
4274 | * @clp: state data structure | |
4275 | * @res: result of a previous SETCLIENTID | |
4276 | * @cred: RPC credential to use for this call | |
4277 | * | |
4278 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4279 | */ | |
fd954ae1 | 4280 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
4281 | struct nfs4_setclientid_res *arg, |
4282 | struct rpc_cred *cred) | |
1da177e4 LT |
4283 | { |
4284 | struct nfs_fsinfo fsinfo; | |
4285 | struct rpc_message msg = { | |
4286 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 4287 | .rpc_argp = arg, |
1da177e4 | 4288 | .rpc_resp = &fsinfo, |
286d7d6a | 4289 | .rpc_cred = cred, |
1da177e4 LT |
4290 | }; |
4291 | unsigned long now; | |
4292 | int status; | |
4293 | ||
6bbb4ae8 CL |
4294 | dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", |
4295 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4296 | clp->cl_clientid); | |
1da177e4 | 4297 | now = jiffies; |
1bd714f2 | 4298 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
4299 | if (status == 0) { |
4300 | spin_lock(&clp->cl_lock); | |
4301 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
4302 | clp->cl_last_renewal = now; | |
4303 | spin_unlock(&clp->cl_lock); | |
4304 | } | |
6bbb4ae8 | 4305 | dprintk("NFS reply setclientid_confirm: %d\n", status); |
1da177e4 LT |
4306 | return status; |
4307 | } | |
4308 | ||
fe650407 TM |
4309 | struct nfs4_delegreturndata { |
4310 | struct nfs4_delegreturnargs args; | |
fa178f29 | 4311 | struct nfs4_delegreturnres res; |
fe650407 TM |
4312 | struct nfs_fh fh; |
4313 | nfs4_stateid stateid; | |
26e976a8 | 4314 | unsigned long timestamp; |
fa178f29 | 4315 | struct nfs_fattr fattr; |
fe650407 TM |
4316 | int rpc_status; |
4317 | }; | |
4318 | ||
fe650407 TM |
4319 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
4320 | { | |
4321 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 4322 | |
14516c3a TM |
4323 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4324 | return; | |
938e1010 | 4325 | |
79708861 RL |
4326 | switch (task->tk_status) { |
4327 | case -NFS4ERR_STALE_STATEID: | |
4328 | case -NFS4ERR_EXPIRED: | |
4329 | case 0: | |
fa178f29 | 4330 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
4331 | break; |
4332 | default: | |
4333 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
4334 | -EAGAIN) { | |
d00c5d43 | 4335 | rpc_restart_call_prepare(task); |
79708861 RL |
4336 | return; |
4337 | } | |
4338 | } | |
4339 | data->rpc_status = task->tk_status; | |
fe650407 TM |
4340 | } |
4341 | ||
4342 | static void nfs4_delegreturn_release(void *calldata) | |
4343 | { | |
fe650407 TM |
4344 | kfree(calldata); |
4345 | } | |
4346 | ||
938e1010 AA |
4347 | #if defined(CONFIG_NFS_V4_1) |
4348 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
4349 | { | |
4350 | struct nfs4_delegreturndata *d_data; | |
4351 | ||
4352 | d_data = (struct nfs4_delegreturndata *)data; | |
4353 | ||
d9afbd1b TM |
4354 | nfs4_setup_sequence(d_data->res.server, |
4355 | &d_data->args.seq_args, | |
4356 | &d_data->res.seq_res, | |
4357 | task); | |
938e1010 AA |
4358 | } |
4359 | #endif /* CONFIG_NFS_V4_1 */ | |
4360 | ||
c8d149f3 | 4361 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
4362 | #if defined(CONFIG_NFS_V4_1) |
4363 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
4364 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
4365 | .rpc_call_done = nfs4_delegreturn_done, |
4366 | .rpc_release = nfs4_delegreturn_release, | |
4367 | }; | |
4368 | ||
e6f81075 | 4369 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
4370 | { |
4371 | struct nfs4_delegreturndata *data; | |
fa178f29 | 4372 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 4373 | struct rpc_task *task; |
5138fde0 TM |
4374 | struct rpc_message msg = { |
4375 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
4376 | .rpc_cred = cred, | |
4377 | }; | |
c970aa85 TM |
4378 | struct rpc_task_setup task_setup_data = { |
4379 | .rpc_client = server->client, | |
5138fde0 | 4380 | .rpc_message = &msg, |
c970aa85 TM |
4381 | .callback_ops = &nfs4_delegreturn_ops, |
4382 | .flags = RPC_TASK_ASYNC, | |
4383 | }; | |
e6f81075 | 4384 | int status = 0; |
fe650407 | 4385 | |
8535b2be | 4386 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
4387 | if (data == NULL) |
4388 | return -ENOMEM; | |
9d12b216 | 4389 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
4390 | data->args.fhandle = &data->fh; |
4391 | data->args.stateid = &data->stateid; | |
9e907fec | 4392 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 4393 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 4394 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
4395 | data->res.fattr = &data->fattr; |
4396 | data->res.server = server; | |
5138fde0 | 4397 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 4398 | data->timestamp = jiffies; |
fe650407 TM |
4399 | data->rpc_status = 0; |
4400 | ||
c970aa85 | 4401 | task_setup_data.callback_data = data; |
1174dd1f TM |
4402 | msg.rpc_argp = &data->args; |
4403 | msg.rpc_resp = &data->res; | |
c970aa85 | 4404 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 4405 | if (IS_ERR(task)) |
fe650407 | 4406 | return PTR_ERR(task); |
e6f81075 TM |
4407 | if (!issync) |
4408 | goto out; | |
fe650407 | 4409 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
4410 | if (status != 0) |
4411 | goto out; | |
4412 | status = data->rpc_status; | |
e144cbcc TM |
4413 | if (status == 0) |
4414 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
4415 | else | |
4416 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 4417 | out: |
e6b3c4db | 4418 | rpc_put_task(task); |
fe650407 | 4419 | return status; |
1da177e4 LT |
4420 | } |
4421 | ||
e6f81075 | 4422 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
4423 | { |
4424 | struct nfs_server *server = NFS_SERVER(inode); | |
4425 | struct nfs4_exception exception = { }; | |
4426 | int err; | |
4427 | do { | |
e6f81075 | 4428 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
4429 | switch (err) { |
4430 | case -NFS4ERR_STALE_STATEID: | |
4431 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
4432 | case 0: |
4433 | return 0; | |
4434 | } | |
4435 | err = nfs4_handle_exception(server, err, &exception); | |
4436 | } while (exception.retry); | |
4437 | return err; | |
4438 | } | |
4439 | ||
4440 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
4441 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
4442 | ||
4443 | /* | |
4444 | * sleep, with exponential backoff, and retry the LOCK operation. | |
4445 | */ | |
4446 | static unsigned long | |
4447 | nfs4_set_lock_task_retry(unsigned long timeout) | |
4448 | { | |
d310310c | 4449 | freezable_schedule_timeout_killable(timeout); |
1da177e4 LT |
4450 | timeout <<= 1; |
4451 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
4452 | return NFS4_LOCK_MAXTIMEOUT; | |
4453 | return timeout; | |
4454 | } | |
4455 | ||
1da177e4 LT |
4456 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4457 | { | |
4458 | struct inode *inode = state->inode; | |
4459 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 4460 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 4461 | struct nfs_lockt_args arg = { |
1da177e4 | 4462 | .fh = NFS_FH(inode), |
911d1aaf | 4463 | .fl = request, |
1da177e4 | 4464 | }; |
911d1aaf TM |
4465 | struct nfs_lockt_res res = { |
4466 | .denied = request, | |
1da177e4 LT |
4467 | }; |
4468 | struct rpc_message msg = { | |
4469 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
4470 | .rpc_argp = &arg, | |
4471 | .rpc_resp = &res, | |
4472 | .rpc_cred = state->owner->so_cred, | |
4473 | }; | |
1da177e4 LT |
4474 | struct nfs4_lock_state *lsp; |
4475 | int status; | |
4476 | ||
911d1aaf | 4477 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
4478 | status = nfs4_set_lock_state(state, request); |
4479 | if (status != 0) | |
4480 | goto out; | |
4481 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 4482 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4483 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 4484 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
4485 | switch (status) { |
4486 | case 0: | |
4487 | request->fl_type = F_UNLCK; | |
4488 | break; | |
4489 | case -NFS4ERR_DENIED: | |
4490 | status = 0; | |
1da177e4 | 4491 | } |
70cc6487 | 4492 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 4493 | out: |
1da177e4 LT |
4494 | return status; |
4495 | } | |
4496 | ||
4497 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4498 | { | |
4499 | struct nfs4_exception exception = { }; | |
4500 | int err; | |
4501 | ||
4502 | do { | |
4503 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
4504 | _nfs4_proc_getlk(state, cmd, request), | |
4505 | &exception); | |
4506 | } while (exception.retry); | |
4507 | return err; | |
4508 | } | |
4509 | ||
4510 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
4511 | { | |
4512 | int res = 0; | |
4513 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
4514 | case FL_POSIX: | |
4515 | res = posix_lock_file_wait(file, fl); | |
4516 | break; | |
4517 | case FL_FLOCK: | |
4518 | res = flock_lock_file_wait(file, fl); | |
4519 | break; | |
4520 | default: | |
4521 | BUG(); | |
4522 | } | |
1da177e4 LT |
4523 | return res; |
4524 | } | |
4525 | ||
faf5f49c | 4526 | struct nfs4_unlockdata { |
911d1aaf TM |
4527 | struct nfs_locku_args arg; |
4528 | struct nfs_locku_res res; | |
faf5f49c TM |
4529 | struct nfs4_lock_state *lsp; |
4530 | struct nfs_open_context *ctx; | |
911d1aaf TM |
4531 | struct file_lock fl; |
4532 | const struct nfs_server *server; | |
26e976a8 | 4533 | unsigned long timestamp; |
faf5f49c TM |
4534 | }; |
4535 | ||
911d1aaf TM |
4536 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
4537 | struct nfs_open_context *ctx, | |
4538 | struct nfs4_lock_state *lsp, | |
4539 | struct nfs_seqid *seqid) | |
4540 | { | |
4541 | struct nfs4_unlockdata *p; | |
4542 | struct inode *inode = lsp->ls_state->inode; | |
4543 | ||
8535b2be | 4544 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
4545 | if (p == NULL) |
4546 | return NULL; | |
4547 | p->arg.fh = NFS_FH(inode); | |
4548 | p->arg.fl = &p->fl; | |
4549 | p->arg.seqid = seqid; | |
c1d51931 | 4550 | p->res.seqid = seqid; |
911d1aaf TM |
4551 | p->arg.stateid = &lsp->ls_stateid; |
4552 | p->lsp = lsp; | |
4553 | atomic_inc(&lsp->ls_count); | |
4554 | /* Ensure we don't close file until we're done freeing locks! */ | |
4555 | p->ctx = get_nfs_open_context(ctx); | |
4556 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4557 | p->server = NFS_SERVER(inode); | |
4558 | return p; | |
4559 | } | |
4560 | ||
06f814a3 | 4561 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 4562 | { |
963d8fe5 | 4563 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 4564 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
4565 | nfs4_put_lock_state(calldata->lsp); |
4566 | put_nfs_open_context(calldata->ctx); | |
4567 | kfree(calldata); | |
faf5f49c TM |
4568 | } |
4569 | ||
963d8fe5 | 4570 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 4571 | { |
963d8fe5 | 4572 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4573 | |
14516c3a TM |
4574 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
4575 | return; | |
faf5f49c TM |
4576 | switch (task->tk_status) { |
4577 | case 0: | |
f597c537 TM |
4578 | nfs4_stateid_copy(&calldata->lsp->ls_stateid, |
4579 | &calldata->res.stateid); | |
26e976a8 | 4580 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 4581 | break; |
9e33bed5 TM |
4582 | case -NFS4ERR_BAD_STATEID: |
4583 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
4584 | case -NFS4ERR_STALE_STATEID: |
4585 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
4586 | break; |
4587 | default: | |
9e33bed5 | 4588 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
d00c5d43 | 4589 | rpc_restart_call_prepare(task); |
faf5f49c | 4590 | } |
2b1bc308 | 4591 | nfs_release_seqid(calldata->arg.seqid); |
faf5f49c TM |
4592 | } |
4593 | ||
4ce70ada | 4594 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 4595 | { |
4ce70ada | 4596 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4597 | |
911d1aaf | 4598 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 4599 | goto out_wait; |
795a88c9 | 4600 | if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) { |
963d8fe5 | 4601 | /* Note: exit _without_ running nfs4_locku_done */ |
c8da19b9 | 4602 | goto out_no_action; |
faf5f49c | 4603 | } |
26e976a8 | 4604 | calldata->timestamp = jiffies; |
035168ab | 4605 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 4606 | &calldata->arg.seq_args, |
2240a9e2 TM |
4607 | &calldata->res.seq_res, |
4608 | task) != 0) | |
4609 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 TM |
4610 | return; |
4611 | out_no_action: | |
4612 | task->tk_action = NULL; | |
4613 | out_wait: | |
4614 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
faf5f49c TM |
4615 | } |
4616 | ||
963d8fe5 | 4617 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 4618 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 4619 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 4620 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
4621 | }; |
4622 | ||
a5d16a4d TM |
4623 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
4624 | struct nfs_open_context *ctx, | |
4625 | struct nfs4_lock_state *lsp, | |
4626 | struct nfs_seqid *seqid) | |
4627 | { | |
4628 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
4629 | struct rpc_message msg = { |
4630 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
4631 | .rpc_cred = ctx->cred, | |
4632 | }; | |
c970aa85 TM |
4633 | struct rpc_task_setup task_setup_data = { |
4634 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 4635 | .rpc_message = &msg, |
c970aa85 | 4636 | .callback_ops = &nfs4_locku_ops, |
101070ca | 4637 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4638 | .flags = RPC_TASK_ASYNC, |
4639 | }; | |
a5d16a4d | 4640 | |
137d6aca FF |
4641 | /* Ensure this is an unlock - when canceling a lock, the |
4642 | * canceled lock is passed in, and it won't be an unlock. | |
4643 | */ | |
4644 | fl->fl_type = F_UNLCK; | |
4645 | ||
a5d16a4d TM |
4646 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
4647 | if (data == NULL) { | |
4648 | nfs_free_seqid(seqid); | |
4649 | return ERR_PTR(-ENOMEM); | |
4650 | } | |
4651 | ||
9d12b216 | 4652 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4653 | msg.rpc_argp = &data->arg; |
4654 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4655 | task_setup_data.callback_data = data; |
4656 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
4657 | } |
4658 | ||
faf5f49c TM |
4659 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
4660 | { | |
65b62a29 TM |
4661 | struct inode *inode = state->inode; |
4662 | struct nfs4_state_owner *sp = state->owner; | |
4663 | struct nfs_inode *nfsi = NFS_I(inode); | |
911d1aaf | 4664 | struct nfs_seqid *seqid; |
1da177e4 | 4665 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
4666 | struct rpc_task *task; |
4667 | int status = 0; | |
536ff0f8 | 4668 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 4669 | |
8d0a8a9d | 4670 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
4671 | /* Unlock _before_ we do the RPC call */ |
4672 | request->fl_flags |= FL_EXISTS; | |
65b62a29 TM |
4673 | /* Exclude nfs_delegation_claim_locks() */ |
4674 | mutex_lock(&sp->so_delegreturn_mutex); | |
4675 | /* Exclude nfs4_reclaim_open_stateid() - note nesting! */ | |
19e03c57 TM |
4676 | down_read(&nfsi->rwsem); |
4677 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
4678 | up_read(&nfsi->rwsem); | |
65b62a29 | 4679 | mutex_unlock(&sp->so_delegreturn_mutex); |
9b073574 | 4680 | goto out; |
19e03c57 TM |
4681 | } |
4682 | up_read(&nfsi->rwsem); | |
65b62a29 | 4683 | mutex_unlock(&sp->so_delegreturn_mutex); |
8d0a8a9d | 4684 | if (status != 0) |
9b073574 TM |
4685 | goto out; |
4686 | /* Is this a delegated lock? */ | |
4687 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
4688 | goto out; | |
8d0a8a9d | 4689 | lsp = request->fl_u.nfs4_fl.owner; |
8535b2be | 4690 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 4691 | status = -ENOMEM; |
911d1aaf | 4692 | if (seqid == NULL) |
9b073574 | 4693 | goto out; |
cd3758e3 | 4694 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
4695 | status = PTR_ERR(task); |
4696 | if (IS_ERR(task)) | |
9b073574 | 4697 | goto out; |
a5d16a4d | 4698 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 4699 | rpc_put_task(task); |
9b073574 | 4700 | out: |
536ff0f8 | 4701 | request->fl_flags = fl_flags; |
1da177e4 LT |
4702 | return status; |
4703 | } | |
4704 | ||
a5d16a4d TM |
4705 | struct nfs4_lockdata { |
4706 | struct nfs_lock_args arg; | |
4707 | struct nfs_lock_res res; | |
4708 | struct nfs4_lock_state *lsp; | |
4709 | struct nfs_open_context *ctx; | |
4710 | struct file_lock fl; | |
26e976a8 | 4711 | unsigned long timestamp; |
a5d16a4d TM |
4712 | int rpc_status; |
4713 | int cancelled; | |
66179efe | 4714 | struct nfs_server *server; |
a5d16a4d TM |
4715 | }; |
4716 | ||
4717 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
4718 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
4719 | gfp_t gfp_mask) | |
1da177e4 | 4720 | { |
a5d16a4d TM |
4721 | struct nfs4_lockdata *p; |
4722 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 4723 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 4724 | |
8535b2be | 4725 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
4726 | if (p == NULL) |
4727 | return NULL; | |
4728 | ||
4729 | p->arg.fh = NFS_FH(inode); | |
4730 | p->arg.fl = &p->fl; | |
8535b2be | 4731 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4732 | if (p->arg.open_seqid == NULL) |
4733 | goto out_free; | |
8535b2be | 4734 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4735 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4736 | goto out_free_seqid; |
a5d16a4d | 4737 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4738 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 4739 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4740 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 4741 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4742 | p->lsp = lsp; |
66179efe | 4743 | p->server = server; |
a5d16a4d TM |
4744 | atomic_inc(&lsp->ls_count); |
4745 | p->ctx = get_nfs_open_context(ctx); | |
4746 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4747 | return p; | |
2f74c0a0 TM |
4748 | out_free_seqid: |
4749 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4750 | out_free: |
4751 | kfree(p); | |
4752 | return NULL; | |
4753 | } | |
4754 | ||
4755 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4756 | { | |
4757 | struct nfs4_lockdata *data = calldata; | |
4758 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4759 | |
3110ff80 | 4760 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4761 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
c8da19b9 | 4762 | goto out_wait; |
a5d16a4d TM |
4763 | /* Do we need to do an open_to_lock_owner? */ |
4764 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
8fe72bac | 4765 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) { |
2240a9e2 | 4766 | goto out_release_lock_seqid; |
8fe72bac | 4767 | } |
a5d16a4d TM |
4768 | data->arg.open_stateid = &state->stateid; |
4769 | data->arg.new_lock_owner = 1; | |
c1d51931 | 4770 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4771 | } else |
4772 | data->arg.new_lock_owner = 0; | |
5d422301 TM |
4773 | if (!nfs4_valid_open_stateid(state)) { |
4774 | data->rpc_status = -EBADF; | |
4775 | task->tk_action = NULL; | |
4776 | goto out_release_open_seqid; | |
4777 | } | |
26e976a8 | 4778 | data->timestamp = jiffies; |
035168ab TM |
4779 | if (nfs4_setup_sequence(data->server, |
4780 | &data->arg.seq_args, | |
2240a9e2 | 4781 | &data->res.seq_res, |
d9afbd1b | 4782 | task) == 0) |
66179efe | 4783 | return; |
5d422301 | 4784 | out_release_open_seqid: |
2240a9e2 TM |
4785 | nfs_release_seqid(data->arg.open_seqid); |
4786 | out_release_lock_seqid: | |
4787 | nfs_release_seqid(data->arg.lock_seqid); | |
c8da19b9 TM |
4788 | out_wait: |
4789 | nfs4_sequence_done(task, &data->res.seq_res); | |
8fe72bac | 4790 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
b257957e AB |
4791 | } |
4792 | ||
a5d16a4d TM |
4793 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4794 | { | |
4795 | struct nfs4_lockdata *data = calldata; | |
4796 | ||
3110ff80 | 4797 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4798 | |
14516c3a TM |
4799 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4800 | return; | |
66179efe | 4801 | |
a5d16a4d | 4802 | data->rpc_status = task->tk_status; |
a5d16a4d | 4803 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4804 | if (data->rpc_status == 0) |
4805 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4806 | else | |
4807 | goto out; | |
4808 | } | |
4809 | if (data->rpc_status == 0) { | |
f597c537 | 4810 | nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid); |
795a88c9 | 4811 | set_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags); |
3d4ff43d | 4812 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 4813 | } |
a5d16a4d | 4814 | out: |
3110ff80 | 4815 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4816 | } |
4817 | ||
4818 | static void nfs4_lock_release(void *calldata) | |
4819 | { | |
4820 | struct nfs4_lockdata *data = calldata; | |
4821 | ||
3110ff80 | 4822 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4823 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4824 | if (data->cancelled != 0) { |
4825 | struct rpc_task *task; | |
4826 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4827 | data->arg.lock_seqid); | |
4828 | if (!IS_ERR(task)) | |
bf294b41 | 4829 | rpc_put_task_async(task); |
3110ff80 | 4830 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4831 | } else |
4832 | nfs_free_seqid(data->arg.lock_seqid); | |
4833 | nfs4_put_lock_state(data->lsp); | |
4834 | put_nfs_open_context(data->ctx); | |
4835 | kfree(data); | |
3110ff80 | 4836 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4837 | } |
4838 | ||
4839 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4840 | .rpc_call_prepare = nfs4_lock_prepare, | |
4841 | .rpc_call_done = nfs4_lock_done, | |
4842 | .rpc_release = nfs4_lock_release, | |
4843 | }; | |
4844 | ||
2bee72a6 TM |
4845 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4846 | { | |
2bee72a6 TM |
4847 | switch (error) { |
4848 | case -NFS4ERR_ADMIN_REVOKED: | |
4849 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 4850 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 | 4851 | if (new_lock_owner != 0 || |
795a88c9 | 4852 | test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0) |
ecac799a | 4853 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
4854 | break; |
4855 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 4856 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
4857 | case -NFS4ERR_EXPIRED: |
4858 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
4859 | }; |
4860 | } | |
4861 | ||
afe6c27c | 4862 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4863 | { |
4864 | struct nfs4_lockdata *data; | |
4865 | struct rpc_task *task; | |
5138fde0 TM |
4866 | struct rpc_message msg = { |
4867 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4868 | .rpc_cred = state->owner->so_cred, | |
4869 | }; | |
c970aa85 TM |
4870 | struct rpc_task_setup task_setup_data = { |
4871 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4872 | .rpc_message = &msg, |
c970aa85 | 4873 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4874 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4875 | .flags = RPC_TASK_ASYNC, |
4876 | }; | |
a5d16a4d TM |
4877 | int ret; |
4878 | ||
3110ff80 | 4879 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4880 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4881 | fl->fl_u.nfs4_fl.owner, |
4882 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4883 | if (data == NULL) |
4884 | return -ENOMEM; | |
4885 | if (IS_SETLKW(cmd)) | |
4886 | data->arg.block = 1; | |
9d12b216 | 4887 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4888 | msg.rpc_argp = &data->arg; |
4889 | msg.rpc_resp = &data->res; | |
c970aa85 | 4890 | task_setup_data.callback_data = data; |
8fe72bac TM |
4891 | if (recovery_type > NFS_LOCK_NEW) { |
4892 | if (recovery_type == NFS_LOCK_RECLAIM) | |
4893 | data->arg.reclaim = NFS_LOCK_RECLAIM; | |
4894 | nfs4_set_sequence_privileged(&data->arg.seq_args); | |
4895 | } | |
c970aa85 | 4896 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 4897 | if (IS_ERR(task)) |
a5d16a4d | 4898 | return PTR_ERR(task); |
a5d16a4d TM |
4899 | ret = nfs4_wait_for_completion_rpc_task(task); |
4900 | if (ret == 0) { | |
4901 | ret = data->rpc_status; | |
2bee72a6 TM |
4902 | if (ret) |
4903 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4904 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4905 | } else |
4906 | data->cancelled = 1; | |
e6b3c4db | 4907 | rpc_put_task(task); |
3110ff80 | 4908 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4909 | return ret; |
1da177e4 LT |
4910 | } |
4911 | ||
4912 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4913 | { | |
202b50dc | 4914 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4915 | struct nfs4_exception exception = { |
4916 | .inode = state->inode, | |
4917 | }; | |
202b50dc TM |
4918 | int err; |
4919 | ||
4920 | do { | |
42a2d13e TM |
4921 | /* Cache the lock if possible... */ |
4922 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4923 | return 0; | |
afe6c27c | 4924 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 4925 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
4926 | break; |
4927 | nfs4_handle_exception(server, err, &exception); | |
4928 | } while (exception.retry); | |
4929 | return err; | |
1da177e4 LT |
4930 | } |
4931 | ||
4932 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4933 | { | |
202b50dc | 4934 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4935 | struct nfs4_exception exception = { |
4936 | .inode = state->inode, | |
4937 | }; | |
202b50dc TM |
4938 | int err; |
4939 | ||
6bfc93ef TM |
4940 | err = nfs4_set_lock_state(state, request); |
4941 | if (err != 0) | |
4942 | return err; | |
202b50dc | 4943 | do { |
42a2d13e TM |
4944 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4945 | return 0; | |
afe6c27c | 4946 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
4947 | switch (err) { |
4948 | default: | |
4949 | goto out; | |
4950 | case -NFS4ERR_GRACE: | |
4951 | case -NFS4ERR_DELAY: | |
4952 | nfs4_handle_exception(server, err, &exception); | |
4953 | err = 0; | |
4954 | } | |
202b50dc | 4955 | } while (exception.retry); |
a9ed2e25 | 4956 | out: |
202b50dc | 4957 | return err; |
1da177e4 LT |
4958 | } |
4959 | ||
f062eb6c | 4960 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd CL |
4961 | /** |
4962 | * nfs41_check_expired_locks - possibly free a lock stateid | |
4963 | * | |
4964 | * @state: NFSv4 state for an inode | |
4965 | * | |
4966 | * Returns NFS_OK if recovery for this stateid is now finished. | |
4967 | * Otherwise a negative NFS4ERR value is returned. | |
4968 | */ | |
b01dd1d8 | 4969 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 4970 | { |
eb64cf96 | 4971 | int status, ret = -NFS4ERR_BAD_STATEID; |
b01dd1d8 | 4972 | struct nfs4_lock_state *lsp; |
f062eb6c BS |
4973 | struct nfs_server *server = NFS_SERVER(state->inode); |
4974 | ||
b01dd1d8 | 4975 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
795a88c9 | 4976 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { |
b01dd1d8 BS |
4977 | status = nfs41_test_stateid(server, &lsp->ls_stateid); |
4978 | if (status != NFS_OK) { | |
3e60ffdd CL |
4979 | /* Free the stateid unless the server |
4980 | * informs us the stateid is unrecognized. */ | |
89af2739 CL |
4981 | if (status != -NFS4ERR_BAD_STATEID) |
4982 | nfs41_free_stateid(server, | |
4983 | &lsp->ls_stateid); | |
795a88c9 | 4984 | clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); |
b01dd1d8 BS |
4985 | ret = status; |
4986 | } | |
4987 | } | |
4988 | }; | |
4989 | ||
4990 | return ret; | |
4991 | } | |
4992 | ||
4993 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4994 | { | |
4995 | int status = NFS_OK; | |
4996 | ||
4997 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
4998 | status = nfs41_check_expired_locks(state); | |
eb64cf96 CL |
4999 | if (status != NFS_OK) |
5000 | status = nfs4_lock_expired(state, request); | |
5001 | return status; | |
f062eb6c BS |
5002 | } |
5003 | #endif | |
5004 | ||
1da177e4 LT |
5005 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
5006 | { | |
9a99af49 | 5007 | struct nfs4_state_owner *sp = state->owner; |
19e03c57 | 5008 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 5009 | unsigned char fl_flags = request->fl_flags; |
9a99af49 | 5010 | unsigned int seq; |
8e469ebd | 5011 | int status = -ENOLCK; |
1da177e4 | 5012 | |
8e469ebd TM |
5013 | if ((fl_flags & FL_POSIX) && |
5014 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
5015 | goto out; | |
6bfc93ef | 5016 | /* Is this a delegated open? */ |
6bfc93ef TM |
5017 | status = nfs4_set_lock_state(state, request); |
5018 | if (status != 0) | |
5019 | goto out; | |
01c3b861 TM |
5020 | request->fl_flags |= FL_ACCESS; |
5021 | status = do_vfs_lock(request->fl_file, request); | |
5022 | if (status < 0) | |
5023 | goto out; | |
19e03c57 | 5024 | down_read(&nfsi->rwsem); |
01c3b861 | 5025 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 5026 | /* Yes: cache locks! */ |
01c3b861 | 5027 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
5028 | request->fl_flags = fl_flags & ~FL_SLEEP; |
5029 | status = do_vfs_lock(request->fl_file, request); | |
5030 | goto out_unlock; | |
01c3b861 | 5031 | } |
9a99af49 TM |
5032 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); |
5033 | up_read(&nfsi->rwsem); | |
afe6c27c | 5034 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 5035 | if (status != 0) |
9a99af49 TM |
5036 | goto out; |
5037 | down_read(&nfsi->rwsem); | |
5038 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) { | |
5039 | status = -NFS4ERR_DELAY; | |
01c3b861 | 5040 | goto out_unlock; |
9a99af49 | 5041 | } |
6bfc93ef | 5042 | /* Note: we always want to sleep here! */ |
01c3b861 | 5043 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 5044 | if (do_vfs_lock(request->fl_file, request) < 0) |
a030889a WAA |
5045 | printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " |
5046 | "manager!\n", __func__); | |
01c3b861 | 5047 | out_unlock: |
19e03c57 | 5048 | up_read(&nfsi->rwsem); |
01c3b861 TM |
5049 | out: |
5050 | request->fl_flags = fl_flags; | |
1da177e4 LT |
5051 | return status; |
5052 | } | |
5053 | ||
5054 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
5055 | { | |
a1d0b5ee TM |
5056 | struct nfs4_exception exception = { |
5057 | .state = state, | |
05ffe24f | 5058 | .inode = state->inode, |
a1d0b5ee | 5059 | }; |
1da177e4 LT |
5060 | int err; |
5061 | ||
5062 | do { | |
965b5d67 TM |
5063 | err = _nfs4_proc_setlk(state, cmd, request); |
5064 | if (err == -NFS4ERR_DENIED) | |
5065 | err = -EAGAIN; | |
1da177e4 | 5066 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 5067 | err, &exception); |
1da177e4 LT |
5068 | } while (exception.retry); |
5069 | return err; | |
5070 | } | |
5071 | ||
5072 | static int | |
5073 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
5074 | { | |
5075 | struct nfs_open_context *ctx; | |
5076 | struct nfs4_state *state; | |
5077 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
5078 | int status; | |
5079 | ||
5080 | /* verify open state */ | |
cd3758e3 | 5081 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
5082 | state = ctx->state; |
5083 | ||
5084 | if (request->fl_start < 0 || request->fl_end < 0) | |
5085 | return -EINVAL; | |
5086 | ||
d953126a TM |
5087 | if (IS_GETLK(cmd)) { |
5088 | if (state != NULL) | |
5089 | return nfs4_proc_getlk(state, F_GETLK, request); | |
5090 | return 0; | |
5091 | } | |
1da177e4 LT |
5092 | |
5093 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
5094 | return -EINVAL; | |
5095 | ||
d953126a TM |
5096 | if (request->fl_type == F_UNLCK) { |
5097 | if (state != NULL) | |
5098 | return nfs4_proc_unlck(state, cmd, request); | |
5099 | return 0; | |
5100 | } | |
1da177e4 | 5101 | |
d953126a TM |
5102 | if (state == NULL) |
5103 | return -ENOLCK; | |
55725513 TM |
5104 | /* |
5105 | * Don't rely on the VFS having checked the file open mode, | |
5106 | * since it won't do this for flock() locks. | |
5107 | */ | |
f44106e2 | 5108 | switch (request->fl_type) { |
55725513 TM |
5109 | case F_RDLCK: |
5110 | if (!(filp->f_mode & FMODE_READ)) | |
5111 | return -EBADF; | |
5112 | break; | |
5113 | case F_WRLCK: | |
5114 | if (!(filp->f_mode & FMODE_WRITE)) | |
5115 | return -EBADF; | |
5116 | } | |
5117 | ||
1da177e4 LT |
5118 | do { |
5119 | status = nfs4_proc_setlk(state, cmd, request); | |
5120 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
5121 | break; | |
5122 | timeout = nfs4_set_lock_task_retry(timeout); | |
5123 | status = -ERESTARTSYS; | |
5124 | if (signalled()) | |
5125 | break; | |
5126 | } while(status < 0); | |
1da177e4 LT |
5127 | return status; |
5128 | } | |
5129 | ||
888e694c TM |
5130 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
5131 | { | |
5132 | struct nfs_server *server = NFS_SERVER(state->inode); | |
888e694c TM |
5133 | int err; |
5134 | ||
5135 | err = nfs4_set_lock_state(state, fl); | |
5136 | if (err != 0) | |
5137 | goto out; | |
4a706fa0 TM |
5138 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
5139 | switch (err) { | |
5140 | default: | |
5141 | printk(KERN_ERR "NFS: %s: unhandled error " | |
5142 | "%d.\n", __func__, err); | |
5143 | case 0: | |
5144 | case -ESTALE: | |
5145 | goto out; | |
5146 | case -NFS4ERR_STALE_CLIENTID: | |
5147 | case -NFS4ERR_STALE_STATEID: | |
5148 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
5149 | case -NFS4ERR_EXPIRED: | |
5150 | nfs4_schedule_lease_recovery(server->nfs_client); | |
5151 | return -EAGAIN; | |
5152 | case -NFS4ERR_BADSESSION: | |
5153 | case -NFS4ERR_BADSLOT: | |
5154 | case -NFS4ERR_BAD_HIGH_SLOT: | |
5155 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
5156 | case -NFS4ERR_DEADSESSION: | |
5157 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
5158 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); | |
5159 | return -EAGAIN; | |
5160 | case -NFS4ERR_DELEG_REVOKED: | |
5161 | case -NFS4ERR_ADMIN_REVOKED: | |
5162 | case -NFS4ERR_BAD_STATEID: | |
5163 | case -NFS4ERR_OPENMODE: | |
5164 | nfs4_schedule_stateid_recovery(server, state); | |
5165 | return 0; | |
5166 | case -NFS4ERR_DELAY: | |
5167 | case -NFS4ERR_GRACE: | |
5168 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
5169 | ssleep(1); | |
5170 | return -EAGAIN; | |
5171 | case -ENOMEM: | |
5172 | case -NFS4ERR_DENIED: | |
5173 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
5174 | return 0; | |
5175 | } | |
888e694c TM |
5176 | out: |
5177 | return err; | |
5178 | } | |
6b3b5496 | 5179 | |
cf470c3e TM |
5180 | struct nfs_release_lockowner_data { |
5181 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 5182 | struct nfs_server *server; |
cf470c3e TM |
5183 | struct nfs_release_lockowner_args args; |
5184 | }; | |
5185 | ||
d3c7b7cc TM |
5186 | static void nfs4_release_lockowner_release(void *calldata) |
5187 | { | |
cf470c3e | 5188 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 5189 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
5190 | kfree(calldata); |
5191 | } | |
5192 | ||
17280175 | 5193 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
d3c7b7cc TM |
5194 | .rpc_release = nfs4_release_lockowner_release, |
5195 | }; | |
5196 | ||
cf470c3e | 5197 | int nfs4_release_lockowner(struct nfs4_lock_state *lsp) |
d3c7b7cc TM |
5198 | { |
5199 | struct nfs_server *server = lsp->ls_state->owner->so_server; | |
cf470c3e | 5200 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
5201 | struct rpc_message msg = { |
5202 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
5203 | }; | |
5204 | ||
5205 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
cf470c3e TM |
5206 | return -EINVAL; |
5207 | data = kmalloc(sizeof(*data), GFP_NOFS); | |
5208 | if (!data) | |
5209 | return -ENOMEM; | |
5210 | data->lsp = lsp; | |
5ae67c4f | 5211 | data->server = server; |
cf470c3e TM |
5212 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
5213 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
5214 | data->args.lock_owner.s_dev = server->s_dev; | |
5215 | msg.rpc_argp = &data->args; | |
5216 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); | |
5217 | return 0; | |
d3c7b7cc TM |
5218 | } |
5219 | ||
aa1870af BF |
5220 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
5221 | ||
64c2ce8b AK |
5222 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
5223 | const void *buf, size_t buflen, | |
5224 | int flags, int type) | |
6b3b5496 | 5225 | { |
64c2ce8b AK |
5226 | if (strcmp(key, "") != 0) |
5227 | return -EINVAL; | |
4b580ee3 | 5228 | |
64c2ce8b | 5229 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5230 | } |
5231 | ||
64c2ce8b AK |
5232 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
5233 | void *buf, size_t buflen, int type) | |
6b3b5496 | 5234 | { |
64c2ce8b AK |
5235 | if (strcmp(key, "") != 0) |
5236 | return -EINVAL; | |
aa1870af | 5237 | |
64c2ce8b | 5238 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5239 | } |
5240 | ||
64c2ce8b AK |
5241 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
5242 | size_t list_len, const char *name, | |
5243 | size_t name_len, int type) | |
6b3b5496 | 5244 | { |
64c2ce8b | 5245 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 5246 | |
096455a2 BF |
5247 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
5248 | return 0; | |
64c2ce8b AK |
5249 | |
5250 | if (list && len <= list_len) | |
5251 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 5252 | return len; |
6b3b5496 BF |
5253 | } |
5254 | ||
533eb461 AA |
5255 | /* |
5256 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
5257 | */ | |
69aaaae1 TM |
5258 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
5259 | { | |
533eb461 AA |
5260 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
5261 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
5262 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 5263 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
5264 | return; |
5265 | ||
5266 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 5267 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
5268 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
5269 | fattr->nlink = 2; | |
5270 | } | |
5271 | ||
f05d147f BS |
5272 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5273 | const struct qstr *name, | |
5274 | struct nfs4_fs_locations *fs_locations, | |
5275 | struct page *page) | |
683b57b4 TM |
5276 | { |
5277 | struct nfs_server *server = NFS_SERVER(dir); | |
5278 | u32 bitmask[2] = { | |
361e624f | 5279 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
5280 | }; |
5281 | struct nfs4_fs_locations_arg args = { | |
5282 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 5283 | .name = name, |
683b57b4 TM |
5284 | .page = page, |
5285 | .bitmask = bitmask, | |
5286 | }; | |
22958463 BH |
5287 | struct nfs4_fs_locations_res res = { |
5288 | .fs_locations = fs_locations, | |
5289 | }; | |
683b57b4 TM |
5290 | struct rpc_message msg = { |
5291 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
5292 | .rpc_argp = &args, | |
22958463 | 5293 | .rpc_resp = &res, |
683b57b4 TM |
5294 | }; |
5295 | int status; | |
5296 | ||
3110ff80 | 5297 | dprintk("%s: start\n", __func__); |
533eb461 AA |
5298 | |
5299 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
5300 | * is not supported */ | |
5301 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
5302 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
5303 | else | |
5304 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
5305 | ||
c228fd3a | 5306 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 5307 | fs_locations->server = server; |
830b8e33 | 5308 | fs_locations->nlocations = 0; |
f05d147f | 5309 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 5310 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
5311 | return status; |
5312 | } | |
5313 | ||
f05d147f BS |
5314 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5315 | const struct qstr *name, | |
5316 | struct nfs4_fs_locations *fs_locations, | |
5317 | struct page *page) | |
db0a9593 BS |
5318 | { |
5319 | struct nfs4_exception exception = { }; | |
5320 | int err; | |
5321 | do { | |
5322 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
f05d147f | 5323 | _nfs4_proc_fs_locations(client, dir, name, fs_locations, page), |
db0a9593 BS |
5324 | &exception); |
5325 | } while (exception.retry); | |
5326 | return err; | |
5327 | } | |
5328 | ||
5a5ea0d4 BS |
5329 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) |
5330 | { | |
5331 | int status; | |
5332 | struct nfs4_secinfo_arg args = { | |
5333 | .dir_fh = NFS_FH(dir), | |
5334 | .name = name, | |
5335 | }; | |
5336 | struct nfs4_secinfo_res res = { | |
5337 | .flavors = flavors, | |
5338 | }; | |
5339 | struct rpc_message msg = { | |
5340 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
5341 | .rpc_argp = &args, | |
5342 | .rpc_resp = &res, | |
5343 | }; | |
5344 | ||
5345 | dprintk("NFS call secinfo %s\n", name->name); | |
5346 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); | |
5347 | dprintk("NFS reply secinfo: %d\n", status); | |
5348 | return status; | |
5349 | } | |
5350 | ||
72de53ec BS |
5351 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
5352 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
5353 | { |
5354 | struct nfs4_exception exception = { }; | |
5355 | int err; | |
5356 | do { | |
5357 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
5358 | _nfs4_proc_secinfo(dir, name, flavors), | |
5359 | &exception); | |
5360 | } while (exception.retry); | |
5361 | return err; | |
5362 | } | |
5363 | ||
557134a3 | 5364 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
5365 | /* |
5366 | * Check the exchange flags returned by the server for invalid flags, having | |
5367 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
5368 | * DS flags set. | |
5369 | */ | |
5370 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
5371 | { | |
5372 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
5373 | goto out_inval; | |
5374 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
5375 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
5376 | goto out_inval; | |
5377 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
5378 | goto out_inval; | |
5379 | return NFS_OK; | |
5380 | out_inval: | |
5381 | return -NFS4ERR_INVAL; | |
5382 | } | |
5383 | ||
78fe0f41 | 5384 | static bool |
79d4e1f0 CL |
5385 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
5386 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
5387 | { |
5388 | if (a->server_scope_sz == b->server_scope_sz && | |
5389 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
5390 | return true; | |
5391 | ||
5392 | return false; | |
5393 | } | |
5394 | ||
7c44f1ae WAA |
5395 | /* |
5396 | * nfs4_proc_bind_conn_to_session() | |
5397 | * | |
5398 | * The 4.1 client currently uses the same TCP connection for the | |
5399 | * fore and backchannel. | |
5400 | */ | |
2cf047c9 | 5401 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred) |
7c44f1ae WAA |
5402 | { |
5403 | int status; | |
5404 | struct nfs41_bind_conn_to_session_res res; | |
5405 | struct rpc_message msg = { | |
5406 | .rpc_proc = | |
5407 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
5408 | .rpc_argp = clp, | |
5409 | .rpc_resp = &res, | |
2cf047c9 | 5410 | .rpc_cred = cred, |
7c44f1ae WAA |
5411 | }; |
5412 | ||
5413 | dprintk("--> %s\n", __func__); | |
7c44f1ae WAA |
5414 | |
5415 | res.session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); | |
5416 | if (unlikely(res.session == NULL)) { | |
5417 | status = -ENOMEM; | |
5418 | goto out; | |
5419 | } | |
5420 | ||
5421 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5422 | if (status == 0) { | |
5423 | if (memcmp(res.session->sess_id.data, | |
5424 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { | |
5425 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
5426 | status = -EIO; | |
5427 | goto out_session; | |
5428 | } | |
5429 | if (res.dir != NFS4_CDFS4_BOTH) { | |
5430 | dprintk("NFS: %s: Unexpected direction from server\n", | |
5431 | __func__); | |
5432 | status = -EIO; | |
5433 | goto out_session; | |
5434 | } | |
5435 | if (res.use_conn_in_rdma_mode) { | |
5436 | dprintk("NFS: %s: Server returned RDMA mode = true\n", | |
5437 | __func__); | |
5438 | status = -EIO; | |
5439 | goto out_session; | |
5440 | } | |
5441 | } | |
5442 | out_session: | |
5443 | kfree(res.session); | |
5444 | out: | |
5445 | dprintk("<-- %s status= %d\n", __func__, status); | |
5446 | return status; | |
5447 | } | |
5448 | ||
99fe60d0 BH |
5449 | /* |
5450 | * nfs4_proc_exchange_id() | |
5451 | * | |
6bbb4ae8 CL |
5452 | * Returns zero, a negative errno, or a negative NFS4ERR status code. |
5453 | * | |
99fe60d0 BH |
5454 | * Since the clientid has expired, all compounds using sessions |
5455 | * associated with the stale clientid will be returning | |
5456 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
5457 | * be in some phase of session reset. | |
5458 | */ | |
4d643d1d | 5459 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
5460 | { |
5461 | nfs4_verifier verifier; | |
5462 | struct nfs41_exchange_id_args args = { | |
cd93710e | 5463 | .verifier = &verifier, |
99fe60d0 | 5464 | .client = clp, |
357f54d6 | 5465 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, |
99fe60d0 BH |
5466 | }; |
5467 | struct nfs41_exchange_id_res res = { | |
32b01310 | 5468 | 0 |
99fe60d0 BH |
5469 | }; |
5470 | int status; | |
5471 | struct rpc_message msg = { | |
5472 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
5473 | .rpc_argp = &args, | |
5474 | .rpc_resp = &res, | |
5475 | .rpc_cred = cred, | |
5476 | }; | |
99fe60d0 | 5477 | |
f092075d | 5478 | nfs4_init_boot_verifier(clp, &verifier); |
e984a55a CL |
5479 | args.id_len = nfs4_init_uniform_client_string(clp, args.id, |
5480 | sizeof(args.id)); | |
6bbb4ae8 CL |
5481 | dprintk("NFS call exchange_id auth=%s, '%.*s'\n", |
5482 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
5483 | args.id_len, args.id); | |
99fe60d0 | 5484 | |
acdeb69d | 5485 | res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
bbafffd2 | 5486 | GFP_NOFS); |
acdeb69d | 5487 | if (unlikely(res.server_owner == NULL)) { |
abe9a6d5 WAA |
5488 | status = -ENOMEM; |
5489 | goto out; | |
5490 | } | |
78fe0f41 | 5491 | |
79d4e1f0 | 5492 | res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 5493 | GFP_NOFS); |
177313f1 | 5494 | if (unlikely(res.server_scope == NULL)) { |
abe9a6d5 | 5495 | status = -ENOMEM; |
acdeb69d | 5496 | goto out_server_owner; |
abe9a6d5 | 5497 | } |
78fe0f41 | 5498 | |
bbafffd2 | 5499 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
177313f1 | 5500 | if (unlikely(res.impl_id == NULL)) { |
7d2ed9ac WAA |
5501 | status = -ENOMEM; |
5502 | goto out_server_scope; | |
5503 | } | |
5504 | ||
1bd714f2 | 5505 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
177313f1 | 5506 | if (status == 0) |
32b01310 | 5507 | status = nfs4_check_cl_exchange_flags(res.flags); |
78fe0f41 | 5508 | |
acdeb69d | 5509 | if (status == 0) { |
32b01310 TM |
5510 | clp->cl_clientid = res.clientid; |
5511 | clp->cl_exchange_flags = (res.flags & ~EXCHGID4_FLAG_CONFIRMED_R); | |
5512 | if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R)) | |
5513 | clp->cl_seqid = res.seqid; | |
5514 | ||
acdeb69d CL |
5515 | kfree(clp->cl_serverowner); |
5516 | clp->cl_serverowner = res.server_owner; | |
5517 | res.server_owner = NULL; | |
78fe0f41 | 5518 | |
7d2ed9ac | 5519 | /* use the most recent implementation id */ |
59155546 CL |
5520 | kfree(clp->cl_implid); |
5521 | clp->cl_implid = res.impl_id; | |
7d2ed9ac | 5522 | |
177313f1 | 5523 | if (clp->cl_serverscope != NULL && |
79d4e1f0 | 5524 | !nfs41_same_server_scope(clp->cl_serverscope, |
78fe0f41 WAA |
5525 | res.server_scope)) { |
5526 | dprintk("%s: server_scope mismatch detected\n", | |
5527 | __func__); | |
5528 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
79d4e1f0 CL |
5529 | kfree(clp->cl_serverscope); |
5530 | clp->cl_serverscope = NULL; | |
78fe0f41 WAA |
5531 | } |
5532 | ||
177313f1 | 5533 | if (clp->cl_serverscope == NULL) { |
79d4e1f0 | 5534 | clp->cl_serverscope = res.server_scope; |
abe9a6d5 WAA |
5535 | goto out; |
5536 | } | |
32b01310 TM |
5537 | } else |
5538 | kfree(res.impl_id); | |
7d2ed9ac | 5539 | |
acdeb69d CL |
5540 | out_server_owner: |
5541 | kfree(res.server_owner); | |
7d2ed9ac | 5542 | out_server_scope: |
abe9a6d5 WAA |
5543 | kfree(res.server_scope); |
5544 | out: | |
177313f1 | 5545 | if (clp->cl_implid != NULL) |
6bbb4ae8 | 5546 | dprintk("NFS reply exchange_id: Server Implementation ID: " |
7d2ed9ac | 5547 | "domain: %s, name: %s, date: %llu,%u\n", |
6bbb4ae8 | 5548 | clp->cl_implid->domain, clp->cl_implid->name, |
59155546 CL |
5549 | clp->cl_implid->date.seconds, |
5550 | clp->cl_implid->date.nseconds); | |
6bbb4ae8 | 5551 | dprintk("NFS reply exchange_id: %d\n", status); |
99fe60d0 BH |
5552 | return status; |
5553 | } | |
5554 | ||
66245539 TM |
5555 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
5556 | struct rpc_cred *cred) | |
5557 | { | |
5558 | struct rpc_message msg = { | |
5559 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
5560 | .rpc_argp = clp, | |
5561 | .rpc_cred = cred, | |
5562 | }; | |
5563 | int status; | |
5564 | ||
5565 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5566 | if (status) | |
02c67525 | 5567 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
5568 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
5569 | return status; | |
5570 | } | |
5571 | ||
5572 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
5573 | struct rpc_cred *cred) | |
5574 | { | |
5575 | unsigned int loop; | |
5576 | int ret; | |
5577 | ||
5578 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
5579 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
5580 | switch (ret) { | |
5581 | case -NFS4ERR_DELAY: | |
5582 | case -NFS4ERR_CLIENTID_BUSY: | |
5583 | ssleep(1); | |
5584 | break; | |
5585 | default: | |
5586 | return ret; | |
5587 | } | |
5588 | } | |
5589 | return 0; | |
5590 | } | |
5591 | ||
5592 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
5593 | { | |
5594 | struct rpc_cred *cred; | |
5595 | int ret = 0; | |
5596 | ||
5597 | if (clp->cl_mvops->minor_version < 1) | |
5598 | goto out; | |
5599 | if (clp->cl_exchange_flags == 0) | |
5600 | goto out; | |
05f4c350 CL |
5601 | if (clp->cl_preserve_clid) |
5602 | goto out; | |
66245539 TM |
5603 | cred = nfs4_get_exchange_id_cred(clp); |
5604 | ret = nfs4_proc_destroy_clientid(clp, cred); | |
5605 | if (cred) | |
5606 | put_rpccred(cred); | |
5607 | switch (ret) { | |
5608 | case 0: | |
5609 | case -NFS4ERR_STALE_CLIENTID: | |
5610 | clp->cl_exchange_flags = 0; | |
5611 | } | |
5612 | out: | |
5613 | return ret; | |
5614 | } | |
5615 | ||
2050f0cc AA |
5616 | struct nfs4_get_lease_time_data { |
5617 | struct nfs4_get_lease_time_args *args; | |
5618 | struct nfs4_get_lease_time_res *res; | |
5619 | struct nfs_client *clp; | |
5620 | }; | |
5621 | ||
5622 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
5623 | void *calldata) | |
5624 | { | |
2050f0cc AA |
5625 | struct nfs4_get_lease_time_data *data = |
5626 | (struct nfs4_get_lease_time_data *)calldata; | |
5627 | ||
5628 | dprintk("--> %s\n", __func__); | |
5629 | /* just setup sequence, do not trigger session recovery | |
5630 | since we're invoked within one */ | |
d9afbd1b TM |
5631 | nfs41_setup_sequence(data->clp->cl_session, |
5632 | &data->args->la_seq_args, | |
5633 | &data->res->lr_seq_res, | |
5634 | task); | |
2050f0cc AA |
5635 | dprintk("<-- %s\n", __func__); |
5636 | } | |
5637 | ||
5638 | /* | |
5639 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
5640 | * from sequence operation or clientid errors. | |
5641 | */ | |
5642 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
5643 | { | |
5644 | struct nfs4_get_lease_time_data *data = | |
5645 | (struct nfs4_get_lease_time_data *)calldata; | |
5646 | ||
5647 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5648 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
5649 | return; | |
2050f0cc AA |
5650 | switch (task->tk_status) { |
5651 | case -NFS4ERR_DELAY: | |
5652 | case -NFS4ERR_GRACE: | |
5653 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
5654 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
5655 | task->tk_status = 0; | |
a8a4ae3a AA |
5656 | /* fall through */ |
5657 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 5658 | rpc_restart_call_prepare(task); |
2050f0cc AA |
5659 | return; |
5660 | } | |
2050f0cc AA |
5661 | dprintk("<-- %s\n", __func__); |
5662 | } | |
5663 | ||
17280175 | 5664 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
5665 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
5666 | .rpc_call_done = nfs4_get_lease_time_done, | |
5667 | }; | |
5668 | ||
5669 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
5670 | { | |
5671 | struct rpc_task *task; | |
5672 | struct nfs4_get_lease_time_args args; | |
5673 | struct nfs4_get_lease_time_res res = { | |
5674 | .lr_fsinfo = fsinfo, | |
5675 | }; | |
5676 | struct nfs4_get_lease_time_data data = { | |
5677 | .args = &args, | |
5678 | .res = &res, | |
5679 | .clp = clp, | |
5680 | }; | |
5681 | struct rpc_message msg = { | |
5682 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
5683 | .rpc_argp = &args, | |
5684 | .rpc_resp = &res, | |
5685 | }; | |
5686 | struct rpc_task_setup task_setup = { | |
5687 | .rpc_client = clp->cl_rpcclient, | |
5688 | .rpc_message = &msg, | |
5689 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
5690 | .callback_data = &data, |
5691 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
5692 | }; |
5693 | int status; | |
5694 | ||
9d12b216 | 5695 | nfs41_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
8fe72bac | 5696 | nfs4_set_sequence_privileged(&args.la_seq_args); |
2050f0cc AA |
5697 | dprintk("--> %s\n", __func__); |
5698 | task = rpc_run_task(&task_setup); | |
5699 | ||
5700 | if (IS_ERR(task)) | |
5701 | status = PTR_ERR(task); | |
5702 | else { | |
5703 | status = task->tk_status; | |
5704 | rpc_put_task(task); | |
5705 | } | |
5706 | dprintk("<-- %s return %d\n", __func__, status); | |
5707 | ||
5708 | return status; | |
5709 | } | |
5710 | ||
fc931582 AA |
5711 | /* |
5712 | * Initialize the values to be used by the client in CREATE_SESSION | |
5713 | * If nfs4_init_session set the fore channel request and response sizes, | |
5714 | * use them. | |
5715 | * | |
5716 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
5717 | * always set csa_cachethis to FALSE because the current implementation | |
5718 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
5719 | */ | |
5720 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
5721 | { | |
5722 | struct nfs4_session *session = args->client->cl_session; | |
ae72ae67 TM |
5723 | unsigned int mxrqst_sz = session->fc_target_max_rqst_sz, |
5724 | mxresp_sz = session->fc_target_max_resp_sz; | |
fc931582 AA |
5725 | |
5726 | if (mxrqst_sz == 0) | |
5727 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
5728 | if (mxresp_sz == 0) | |
5729 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
5730 | /* Fore channel attributes */ | |
fc931582 AA |
5731 | args->fc_attrs.max_rqst_sz = mxrqst_sz; |
5732 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 | 5733 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 5734 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
5735 | |
5736 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 5737 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
5738 | __func__, |
5739 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 5740 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
5741 | |
5742 | /* Back channel attributes */ | |
fc931582 AA |
5743 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
5744 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
5745 | args->bc_attrs.max_resp_sz_cached = 0; | |
5746 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
5747 | args->bc_attrs.max_reqs = 1; | |
5748 | ||
5749 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
5750 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
5751 | __func__, | |
5752 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
5753 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
5754 | args->bc_attrs.max_reqs); | |
5755 | } | |
5756 | ||
43c2e885 | 5757 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 5758 | { |
43c2e885 BF |
5759 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
5760 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
5761 | ||
43c2e885 BF |
5762 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
5763 | return -EINVAL; | |
5764 | /* | |
5765 | * Our requested max_ops is the minimum we need; we're not | |
5766 | * prepared to break up compounds into smaller pieces than that. | |
5767 | * So, no point even trying to continue if the server won't | |
5768 | * cooperate: | |
5769 | */ | |
5770 | if (rcvd->max_ops < sent->max_ops) | |
5771 | return -EINVAL; | |
5772 | if (rcvd->max_reqs == 0) | |
5773 | return -EINVAL; | |
b4b9a0c1 VG |
5774 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
5775 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 5776 | return 0; |
8d35301d AA |
5777 | } |
5778 | ||
43c2e885 BF |
5779 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
5780 | { | |
5781 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
5782 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 5783 | |
43c2e885 BF |
5784 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
5785 | return -EINVAL; | |
5786 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
5787 | return -EINVAL; | |
5788 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
5789 | return -EINVAL; | |
5790 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 5791 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 5792 | return -EINVAL; |
b4b9a0c1 | 5793 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 BF |
5794 | return -EINVAL; |
5795 | return 0; | |
5796 | } | |
8d35301d | 5797 | |
8d35301d AA |
5798 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
5799 | struct nfs4_session *session) | |
5800 | { | |
43c2e885 | 5801 | int ret; |
8d35301d | 5802 | |
43c2e885 BF |
5803 | ret = nfs4_verify_fore_channel_attrs(args, session); |
5804 | if (ret) | |
5805 | return ret; | |
5806 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
5807 | } |
5808 | ||
848f5bda TM |
5809 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
5810 | struct rpc_cred *cred) | |
fc931582 AA |
5811 | { |
5812 | struct nfs4_session *session = clp->cl_session; | |
5813 | struct nfs41_create_session_args args = { | |
5814 | .client = clp, | |
5815 | .cb_program = NFS4_CALLBACK, | |
5816 | }; | |
5817 | struct nfs41_create_session_res res = { | |
5818 | .client = clp, | |
5819 | }; | |
5820 | struct rpc_message msg = { | |
5821 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
5822 | .rpc_argp = &args, | |
5823 | .rpc_resp = &res, | |
848f5bda | 5824 | .rpc_cred = cred, |
fc931582 AA |
5825 | }; |
5826 | int status; | |
5827 | ||
5828 | nfs4_init_channel_attrs(&args); | |
0f91421e | 5829 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 5830 | |
1bd714f2 | 5831 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
fc931582 | 5832 | |
43095d39 | 5833 | if (!status) { |
8d35301d AA |
5834 | /* Verify the session's negotiated channel_attrs values */ |
5835 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
5836 | /* Increment the clientid slot sequence id */ |
5837 | clp->cl_seqid++; | |
5838 | } | |
5839 | ||
5840 | return status; | |
5841 | } | |
5842 | ||
5843 | /* | |
5844 | * Issues a CREATE_SESSION operation to the server. | |
5845 | * It is the responsibility of the caller to verify the session is | |
5846 | * expired before calling this routine. | |
5847 | */ | |
848f5bda | 5848 | int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred) |
fc931582 AA |
5849 | { |
5850 | int status; | |
5851 | unsigned *ptr; | |
fc931582 AA |
5852 | struct nfs4_session *session = clp->cl_session; |
5853 | ||
5854 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
5855 | ||
848f5bda | 5856 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
5857 | if (status) |
5858 | goto out; | |
5859 | ||
aacd5537 AA |
5860 | /* Init or reset the session slot tables */ |
5861 | status = nfs4_setup_session_slot_tables(session); | |
5862 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
5863 | if (status) |
5864 | goto out; | |
5865 | ||
5866 | ptr = (unsigned *)&session->sess_id.data[0]; | |
5867 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
5868 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
5869 | out: |
5870 | dprintk("<-- %s\n", __func__); | |
5871 | return status; | |
5872 | } | |
5873 | ||
0f3e66c6 AA |
5874 | /* |
5875 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
5876 | * The caller must serialize access to this routine. | |
5877 | */ | |
848f5bda TM |
5878 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
5879 | struct rpc_cred *cred) | |
0f3e66c6 | 5880 | { |
848f5bda TM |
5881 | struct rpc_message msg = { |
5882 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
5883 | .rpc_argp = session, | |
5884 | .rpc_cred = cred, | |
5885 | }; | |
0f3e66c6 | 5886 | int status = 0; |
0f3e66c6 AA |
5887 | |
5888 | dprintk("--> nfs4_proc_destroy_session\n"); | |
5889 | ||
5890 | /* session is still being setup */ | |
5891 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
5892 | return status; | |
5893 | ||
1bd714f2 | 5894 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
0f3e66c6 AA |
5895 | |
5896 | if (status) | |
08106ac7 | 5897 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
5898 | "Session has been destroyed regardless...\n", status); |
5899 | ||
5900 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
5901 | return status; | |
5902 | } | |
5903 | ||
fc01cea9 AA |
5904 | /* |
5905 | * Renew the cl_session lease. | |
5906 | */ | |
d5f8d3fe TM |
5907 | struct nfs4_sequence_data { |
5908 | struct nfs_client *clp; | |
5909 | struct nfs4_sequence_args args; | |
5910 | struct nfs4_sequence_res res; | |
5911 | }; | |
5912 | ||
dc96aef9 AB |
5913 | static void nfs41_sequence_release(void *data) |
5914 | { | |
d5f8d3fe TM |
5915 | struct nfs4_sequence_data *calldata = data; |
5916 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 5917 | |
7135840f AB |
5918 | if (atomic_read(&clp->cl_count) > 1) |
5919 | nfs4_schedule_state_renewal(clp); | |
5920 | nfs_put_client(clp); | |
d5f8d3fe | 5921 | kfree(calldata); |
dc96aef9 AB |
5922 | } |
5923 | ||
aa5190d0 TM |
5924 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5925 | { | |
5926 | switch(task->tk_status) { | |
5927 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5928 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5929 | return -EAGAIN; | |
5930 | default: | |
0400a6b0 | 5931 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5932 | } |
5933 | return 0; | |
5934 | } | |
5935 | ||
dc96aef9 | 5936 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 5937 | { |
d5f8d3fe TM |
5938 | struct nfs4_sequence_data *calldata = data; |
5939 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 5940 | |
14516c3a TM |
5941 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
5942 | return; | |
fc01cea9 AA |
5943 | |
5944 | if (task->tk_status < 0) { | |
5945 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
5946 | if (atomic_read(&clp->cl_count) == 1) |
5947 | goto out; | |
fc01cea9 | 5948 | |
aa5190d0 TM |
5949 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
5950 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
5951 | return; |
5952 | } | |
5953 | } | |
fc01cea9 | 5954 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 5955 | out: |
fc01cea9 AA |
5956 | dprintk("<-- %s\n", __func__); |
5957 | } | |
5958 | ||
5959 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
5960 | { | |
d5f8d3fe TM |
5961 | struct nfs4_sequence_data *calldata = data; |
5962 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
5963 | struct nfs4_sequence_args *args; |
5964 | struct nfs4_sequence_res *res; | |
5965 | ||
fc01cea9 AA |
5966 | args = task->tk_msg.rpc_argp; |
5967 | res = task->tk_msg.rpc_resp; | |
5968 | ||
d9afbd1b | 5969 | nfs41_setup_sequence(clp->cl_session, args, res, task); |
fc01cea9 AA |
5970 | } |
5971 | ||
5972 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
5973 | .rpc_call_done = nfs41_sequence_call_done, | |
5974 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 5975 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
5976 | }; |
5977 | ||
8fe72bac TM |
5978 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, |
5979 | struct rpc_cred *cred, | |
5980 | bool is_privileged) | |
fc01cea9 | 5981 | { |
d5f8d3fe | 5982 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
5983 | struct rpc_message msg = { |
5984 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
5985 | .rpc_cred = cred, | |
5986 | }; | |
71ac6da9 TM |
5987 | struct rpc_task_setup task_setup_data = { |
5988 | .rpc_client = clp->cl_rpcclient, | |
5989 | .rpc_message = &msg, | |
8fe72bac | 5990 | .callback_ops = &nfs41_sequence_ops, |
71ac6da9 TM |
5991 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT, |
5992 | }; | |
fc01cea9 | 5993 | |
7135840f | 5994 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 5995 | return ERR_PTR(-EIO); |
dfb4f309 | 5996 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 5997 | if (calldata == NULL) { |
7135840f | 5998 | nfs_put_client(clp); |
71ac6da9 | 5999 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 6000 | } |
9d12b216 | 6001 | nfs41_init_sequence(&calldata->args, &calldata->res, 0); |
8fe72bac TM |
6002 | if (is_privileged) |
6003 | nfs4_set_sequence_privileged(&calldata->args); | |
d5f8d3fe TM |
6004 | msg.rpc_argp = &calldata->args; |
6005 | msg.rpc_resp = &calldata->res; | |
6006 | calldata->clp = clp; | |
71ac6da9 | 6007 | task_setup_data.callback_data = calldata; |
fc01cea9 | 6008 | |
71ac6da9 TM |
6009 | return rpc_run_task(&task_setup_data); |
6010 | } | |
6011 | ||
2f60ea6b | 6012 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
6013 | { |
6014 | struct rpc_task *task; | |
6015 | int ret = 0; | |
6016 | ||
2f60ea6b TM |
6017 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
6018 | return 0; | |
8fe72bac | 6019 | task = _nfs41_proc_sequence(clp, cred, false); |
71ac6da9 TM |
6020 | if (IS_ERR(task)) |
6021 | ret = PTR_ERR(task); | |
6022 | else | |
bf294b41 | 6023 | rpc_put_task_async(task); |
71ac6da9 TM |
6024 | dprintk("<-- %s status=%d\n", __func__, ret); |
6025 | return ret; | |
6026 | } | |
6027 | ||
6028 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
6029 | { | |
6030 | struct rpc_task *task; | |
6031 | int ret; | |
6032 | ||
8fe72bac | 6033 | task = _nfs41_proc_sequence(clp, cred, true); |
71ac6da9 TM |
6034 | if (IS_ERR(task)) { |
6035 | ret = PTR_ERR(task); | |
6036 | goto out; | |
6037 | } | |
6038 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
6039 | if (!ret) { |
6040 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
6041 | ||
6042 | if (task->tk_status == 0) | |
6043 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 6044 | ret = task->tk_status; |
b4410c2f | 6045 | } |
71ac6da9 TM |
6046 | rpc_put_task(task); |
6047 | out: | |
6048 | dprintk("<-- %s status=%d\n", __func__, ret); | |
6049 | return ret; | |
fc01cea9 AA |
6050 | } |
6051 | ||
fce5c838 RL |
6052 | struct nfs4_reclaim_complete_data { |
6053 | struct nfs_client *clp; | |
6054 | struct nfs41_reclaim_complete_args arg; | |
6055 | struct nfs41_reclaim_complete_res res; | |
6056 | }; | |
6057 | ||
6058 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
6059 | { | |
6060 | struct nfs4_reclaim_complete_data *calldata = data; | |
6061 | ||
d9afbd1b TM |
6062 | nfs41_setup_sequence(calldata->clp->cl_session, |
6063 | &calldata->arg.seq_args, | |
6064 | &calldata->res.seq_res, | |
6065 | task); | |
fce5c838 RL |
6066 | } |
6067 | ||
aa5190d0 TM |
6068 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
6069 | { | |
6070 | switch(task->tk_status) { | |
6071 | case 0: | |
6072 | case -NFS4ERR_COMPLETE_ALREADY: | |
6073 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
6074 | break; | |
6075 | case -NFS4ERR_DELAY: | |
aa5190d0 | 6076 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
6077 | /* fall through */ |
6078 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
6079 | return -EAGAIN; |
6080 | default: | |
0400a6b0 | 6081 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
6082 | } |
6083 | return 0; | |
6084 | } | |
6085 | ||
fce5c838 RL |
6086 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
6087 | { | |
6088 | struct nfs4_reclaim_complete_data *calldata = data; | |
6089 | struct nfs_client *clp = calldata->clp; | |
6090 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
6091 | ||
6092 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
6093 | if (!nfs41_sequence_done(task, res)) |
6094 | return; | |
fce5c838 | 6095 | |
aa5190d0 TM |
6096 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
6097 | rpc_restart_call_prepare(task); | |
6098 | return; | |
6099 | } | |
fce5c838 RL |
6100 | dprintk("<-- %s\n", __func__); |
6101 | } | |
6102 | ||
6103 | static void nfs4_free_reclaim_complete_data(void *data) | |
6104 | { | |
6105 | struct nfs4_reclaim_complete_data *calldata = data; | |
6106 | ||
6107 | kfree(calldata); | |
6108 | } | |
6109 | ||
6110 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
6111 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
6112 | .rpc_call_done = nfs4_reclaim_complete_done, | |
6113 | .rpc_release = nfs4_free_reclaim_complete_data, | |
6114 | }; | |
6115 | ||
6116 | /* | |
6117 | * Issue a global reclaim complete. | |
6118 | */ | |
6119 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
6120 | { | |
6121 | struct nfs4_reclaim_complete_data *calldata; | |
6122 | struct rpc_task *task; | |
6123 | struct rpc_message msg = { | |
6124 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
6125 | }; | |
6126 | struct rpc_task_setup task_setup_data = { | |
6127 | .rpc_client = clp->cl_rpcclient, | |
6128 | .rpc_message = &msg, | |
6129 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
6130 | .flags = RPC_TASK_ASYNC, | |
6131 | }; | |
6132 | int status = -ENOMEM; | |
6133 | ||
6134 | dprintk("--> %s\n", __func__); | |
8535b2be | 6135 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
6136 | if (calldata == NULL) |
6137 | goto out; | |
6138 | calldata->clp = clp; | |
6139 | calldata->arg.one_fs = 0; | |
fce5c838 | 6140 | |
9d12b216 | 6141 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
8fe72bac | 6142 | nfs4_set_sequence_privileged(&calldata->arg.seq_args); |
fce5c838 RL |
6143 | msg.rpc_argp = &calldata->arg; |
6144 | msg.rpc_resp = &calldata->res; | |
6145 | task_setup_data.callback_data = calldata; | |
6146 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 6147 | if (IS_ERR(task)) { |
fce5c838 | 6148 | status = PTR_ERR(task); |
acf82b85 DC |
6149 | goto out; |
6150 | } | |
c34c32ea AA |
6151 | status = nfs4_wait_for_completion_rpc_task(task); |
6152 | if (status == 0) | |
6153 | status = task->tk_status; | |
fce5c838 | 6154 | rpc_put_task(task); |
acf82b85 | 6155 | return 0; |
fce5c838 RL |
6156 | out: |
6157 | dprintk("<-- %s status=%d\n", __func__, status); | |
6158 | return status; | |
6159 | } | |
b1f69b75 AA |
6160 | |
6161 | static void | |
6162 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
6163 | { | |
6164 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 6165 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
6ba7db34 | 6166 | struct nfs4_session *session = nfs4_get_session(server); |
b1f69b75 AA |
6167 | |
6168 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
6169 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
6170 | * right now covering the LAYOUTGET we are about to send. | |
6171 | * However, that is not so catastrophic, and there seems | |
6172 | * to be no way to prevent it completely. | |
6173 | */ | |
6ba7db34 | 6174 | if (nfs41_setup_sequence(session, &lgp->args.seq_args, |
9d12b216 | 6175 | &lgp->res.seq_res, task)) |
b1f69b75 | 6176 | return; |
cf7d63f1 FI |
6177 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
6178 | NFS_I(lgp->args.inode)->layout, | |
6179 | lgp->args.ctx->state)) { | |
6180 | rpc_exit(task, NFS4_OK); | |
cf7d63f1 | 6181 | } |
b1f69b75 AA |
6182 | } |
6183 | ||
6184 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
6185 | { | |
6186 | struct nfs4_layoutget *lgp = calldata; | |
ee314c2a TM |
6187 | struct inode *inode = lgp->args.inode; |
6188 | struct nfs_server *server = NFS_SERVER(inode); | |
6189 | struct pnfs_layout_hdr *lo; | |
6190 | struct nfs4_state *state = NULL; | |
30005121 | 6191 | unsigned long timeo, giveup; |
b1f69b75 AA |
6192 | |
6193 | dprintk("--> %s\n", __func__); | |
6194 | ||
6ba7db34 | 6195 | if (!nfs41_sequence_done(task, &lgp->res.seq_res)) |
ee314c2a | 6196 | goto out; |
b1f69b75 AA |
6197 | |
6198 | switch (task->tk_status) { | |
6199 | case 0: | |
ee314c2a | 6200 | goto out; |
b1f69b75 AA |
6201 | case -NFS4ERR_LAYOUTTRYLATER: |
6202 | case -NFS4ERR_RECALLCONFLICT: | |
30005121 WAA |
6203 | timeo = rpc_get_timeout(task->tk_client); |
6204 | giveup = lgp->args.timestamp + timeo; | |
6205 | if (time_after(giveup, jiffies)) | |
6206 | task->tk_status = -NFS4ERR_DELAY; | |
ee314c2a TM |
6207 | break; |
6208 | case -NFS4ERR_EXPIRED: | |
6209 | case -NFS4ERR_BAD_STATEID: | |
6210 | spin_lock(&inode->i_lock); | |
6211 | lo = NFS_I(inode)->layout; | |
6212 | if (!lo || list_empty(&lo->plh_segs)) { | |
6213 | spin_unlock(&inode->i_lock); | |
6214 | /* If the open stateid was bad, then recover it. */ | |
6215 | state = lgp->args.ctx->state; | |
6216 | } else { | |
6217 | LIST_HEAD(head); | |
6218 | ||
6219 | pnfs_mark_matching_lsegs_invalid(lo, &head, NULL); | |
6220 | spin_unlock(&inode->i_lock); | |
6221 | /* Mark the bad layout state as invalid, then | |
6222 | * retry using the open stateid. */ | |
6223 | pnfs_free_lseg_list(&head); | |
b1f69b75 AA |
6224 | } |
6225 | } | |
ee314c2a TM |
6226 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
6227 | rpc_restart_call_prepare(task); | |
6228 | out: | |
b1f69b75 AA |
6229 | dprintk("<-- %s\n", __func__); |
6230 | } | |
6231 | ||
8554116e IK |
6232 | static size_t max_response_pages(struct nfs_server *server) |
6233 | { | |
6234 | u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; | |
6235 | return nfs_page_array_len(0, max_resp_sz); | |
6236 | } | |
6237 | ||
6238 | static void nfs4_free_pages(struct page **pages, size_t size) | |
6239 | { | |
6240 | int i; | |
6241 | ||
6242 | if (!pages) | |
6243 | return; | |
6244 | ||
6245 | for (i = 0; i < size; i++) { | |
6246 | if (!pages[i]) | |
6247 | break; | |
6248 | __free_page(pages[i]); | |
6249 | } | |
6250 | kfree(pages); | |
6251 | } | |
6252 | ||
6253 | static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags) | |
6254 | { | |
6255 | struct page **pages; | |
6256 | int i; | |
6257 | ||
6258 | pages = kcalloc(size, sizeof(struct page *), gfp_flags); | |
6259 | if (!pages) { | |
6260 | dprintk("%s: can't alloc array of %zu pages\n", __func__, size); | |
6261 | return NULL; | |
6262 | } | |
6263 | ||
6264 | for (i = 0; i < size; i++) { | |
6265 | pages[i] = alloc_page(gfp_flags); | |
6266 | if (!pages[i]) { | |
6267 | dprintk("%s: failed to allocate page\n", __func__); | |
6268 | nfs4_free_pages(pages, size); | |
6269 | return NULL; | |
6270 | } | |
6271 | } | |
6272 | ||
6273 | return pages; | |
6274 | } | |
6275 | ||
b1f69b75 AA |
6276 | static void nfs4_layoutget_release(void *calldata) |
6277 | { | |
6278 | struct nfs4_layoutget *lgp = calldata; | |
a47970ff WAA |
6279 | struct inode *inode = lgp->args.inode; |
6280 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 6281 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
6282 | |
6283 | dprintk("--> %s\n", __func__); | |
8554116e | 6284 | nfs4_free_pages(lgp->args.layout.pages, max_pages); |
a47970ff | 6285 | pnfs_put_layout_hdr(NFS_I(inode)->layout); |
b1f69b75 AA |
6286 | put_nfs_open_context(lgp->args.ctx); |
6287 | kfree(calldata); | |
6288 | dprintk("<-- %s\n", __func__); | |
6289 | } | |
6290 | ||
6291 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
6292 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
6293 | .rpc_call_done = nfs4_layoutget_done, | |
6294 | .rpc_release = nfs4_layoutget_release, | |
6295 | }; | |
6296 | ||
a0b0a6e3 TM |
6297 | struct pnfs_layout_segment * |
6298 | nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags) | |
b1f69b75 | 6299 | { |
a47970ff WAA |
6300 | struct inode *inode = lgp->args.inode; |
6301 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 6302 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
6303 | struct rpc_task *task; |
6304 | struct rpc_message msg = { | |
6305 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
6306 | .rpc_argp = &lgp->args, | |
6307 | .rpc_resp = &lgp->res, | |
6308 | }; | |
6309 | struct rpc_task_setup task_setup_data = { | |
6310 | .rpc_client = server->client, | |
6311 | .rpc_message = &msg, | |
6312 | .callback_ops = &nfs4_layoutget_call_ops, | |
6313 | .callback_data = lgp, | |
6314 | .flags = RPC_TASK_ASYNC, | |
6315 | }; | |
a0b0a6e3 | 6316 | struct pnfs_layout_segment *lseg = NULL; |
b1f69b75 AA |
6317 | int status = 0; |
6318 | ||
6319 | dprintk("--> %s\n", __func__); | |
6320 | ||
8554116e IK |
6321 | lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags); |
6322 | if (!lgp->args.layout.pages) { | |
6323 | nfs4_layoutget_release(lgp); | |
a0b0a6e3 | 6324 | return ERR_PTR(-ENOMEM); |
8554116e IK |
6325 | } |
6326 | lgp->args.layout.pglen = max_pages * PAGE_SIZE; | |
30005121 | 6327 | lgp->args.timestamp = jiffies; |
8554116e | 6328 | |
35124a09 | 6329 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 6330 | lgp->res.seq_res.sr_slot = NULL; |
9d12b216 | 6331 | nfs41_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
a47970ff WAA |
6332 | |
6333 | /* nfs4_layoutget_release calls pnfs_put_layout_hdr */ | |
6334 | pnfs_get_layout_hdr(NFS_I(inode)->layout); | |
6335 | ||
b1f69b75 AA |
6336 | task = rpc_run_task(&task_setup_data); |
6337 | if (IS_ERR(task)) | |
a0b0a6e3 | 6338 | return ERR_CAST(task); |
b1f69b75 | 6339 | status = nfs4_wait_for_completion_rpc_task(task); |
c31663d4 FI |
6340 | if (status == 0) |
6341 | status = task->tk_status; | |
085b7a45 WAA |
6342 | /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */ |
6343 | if (status == 0 && lgp->res.layoutp->len) | |
a0b0a6e3 | 6344 | lseg = pnfs_layout_process(lgp); |
b1f69b75 AA |
6345 | rpc_put_task(task); |
6346 | dprintk("<-- %s status=%d\n", __func__, status); | |
a0b0a6e3 TM |
6347 | if (status) |
6348 | return ERR_PTR(status); | |
6349 | return lseg; | |
b1f69b75 AA |
6350 | } |
6351 | ||
cbe82603 BH |
6352 | static void |
6353 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
6354 | { | |
6355 | struct nfs4_layoutreturn *lrp = calldata; | |
6356 | ||
6357 | dprintk("--> %s\n", __func__); | |
d9afbd1b TM |
6358 | nfs41_setup_sequence(lrp->clp->cl_session, |
6359 | &lrp->args.seq_args, | |
6360 | &lrp->res.seq_res, | |
6361 | task); | |
cbe82603 BH |
6362 | } |
6363 | ||
6364 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
6365 | { | |
6366 | struct nfs4_layoutreturn *lrp = calldata; | |
6367 | struct nfs_server *server; | |
6368 | ||
6369 | dprintk("--> %s\n", __func__); | |
6370 | ||
6ba7db34 | 6371 | if (!nfs41_sequence_done(task, &lrp->res.seq_res)) |
cbe82603 BH |
6372 | return; |
6373 | ||
6374 | server = NFS_SERVER(lrp->args.inode); | |
6375 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 6376 | rpc_restart_call_prepare(task); |
cbe82603 BH |
6377 | return; |
6378 | } | |
cbe82603 BH |
6379 | dprintk("<-- %s\n", __func__); |
6380 | } | |
6381 | ||
6382 | static void nfs4_layoutreturn_release(void *calldata) | |
6383 | { | |
6384 | struct nfs4_layoutreturn *lrp = calldata; | |
849b286f | 6385 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
6386 | |
6387 | dprintk("--> %s\n", __func__); | |
849b286f TM |
6388 | spin_lock(&lo->plh_inode->i_lock); |
6389 | if (lrp->res.lrs_present) | |
6390 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); | |
6391 | lo->plh_block_lgets--; | |
6392 | spin_unlock(&lo->plh_inode->i_lock); | |
70c3bd2b | 6393 | pnfs_put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
6394 | kfree(calldata); |
6395 | dprintk("<-- %s\n", __func__); | |
6396 | } | |
6397 | ||
6398 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
6399 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
6400 | .rpc_call_done = nfs4_layoutreturn_done, | |
6401 | .rpc_release = nfs4_layoutreturn_release, | |
6402 | }; | |
6403 | ||
6404 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
6405 | { | |
6406 | struct rpc_task *task; | |
6407 | struct rpc_message msg = { | |
6408 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
6409 | .rpc_argp = &lrp->args, | |
6410 | .rpc_resp = &lrp->res, | |
6411 | }; | |
6412 | struct rpc_task_setup task_setup_data = { | |
6413 | .rpc_client = lrp->clp->cl_rpcclient, | |
6414 | .rpc_message = &msg, | |
6415 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
6416 | .callback_data = lrp, | |
6417 | }; | |
6418 | int status; | |
6419 | ||
6420 | dprintk("--> %s\n", __func__); | |
9d12b216 | 6421 | nfs41_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
6422 | task = rpc_run_task(&task_setup_data); |
6423 | if (IS_ERR(task)) | |
6424 | return PTR_ERR(task); | |
6425 | status = task->tk_status; | |
6426 | dprintk("<-- %s status=%d\n", __func__, status); | |
6427 | rpc_put_task(task); | |
6428 | return status; | |
6429 | } | |
6430 | ||
7f11d8d3 AA |
6431 | /* |
6432 | * Retrieve the list of Data Server devices from the MDS. | |
6433 | */ | |
6434 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
6435 | const struct nfs_fh *fh, | |
6436 | struct pnfs_devicelist *devlist) | |
6437 | { | |
6438 | struct nfs4_getdevicelist_args args = { | |
6439 | .fh = fh, | |
6440 | .layoutclass = server->pnfs_curr_ld->id, | |
6441 | }; | |
6442 | struct nfs4_getdevicelist_res res = { | |
6443 | .devlist = devlist, | |
6444 | }; | |
6445 | struct rpc_message msg = { | |
6446 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
6447 | .rpc_argp = &args, | |
6448 | .rpc_resp = &res, | |
6449 | }; | |
6450 | int status; | |
6451 | ||
6452 | dprintk("--> %s\n", __func__); | |
6453 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
6454 | &res.seq_res, 0); | |
6455 | dprintk("<-- %s status=%d\n", __func__, status); | |
6456 | return status; | |
6457 | } | |
6458 | ||
6459 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
6460 | const struct nfs_fh *fh, | |
6461 | struct pnfs_devicelist *devlist) | |
6462 | { | |
6463 | struct nfs4_exception exception = { }; | |
6464 | int err; | |
6465 | ||
6466 | do { | |
6467 | err = nfs4_handle_exception(server, | |
6468 | _nfs4_getdevicelist(server, fh, devlist), | |
6469 | &exception); | |
6470 | } while (exception.retry); | |
6471 | ||
6472 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
6473 | err, devlist->num_devs); | |
6474 | ||
6475 | return err; | |
6476 | } | |
6477 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
6478 | ||
b1f69b75 AA |
6479 | static int |
6480 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6481 | { | |
6482 | struct nfs4_getdeviceinfo_args args = { | |
6483 | .pdev = pdev, | |
6484 | }; | |
6485 | struct nfs4_getdeviceinfo_res res = { | |
6486 | .pdev = pdev, | |
6487 | }; | |
6488 | struct rpc_message msg = { | |
6489 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
6490 | .rpc_argp = &args, | |
6491 | .rpc_resp = &res, | |
6492 | }; | |
6493 | int status; | |
6494 | ||
6495 | dprintk("--> %s\n", __func__); | |
7c513058 | 6496 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
6497 | dprintk("<-- %s status=%d\n", __func__, status); |
6498 | ||
6499 | return status; | |
6500 | } | |
6501 | ||
6502 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6503 | { | |
6504 | struct nfs4_exception exception = { }; | |
6505 | int err; | |
6506 | ||
6507 | do { | |
6508 | err = nfs4_handle_exception(server, | |
6509 | _nfs4_proc_getdeviceinfo(server, pdev), | |
6510 | &exception); | |
6511 | } while (exception.retry); | |
6512 | return err; | |
6513 | } | |
6514 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
6515 | ||
863a3c6c AA |
6516 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
6517 | { | |
6518 | struct nfs4_layoutcommit_data *data = calldata; | |
6519 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6ba7db34 | 6520 | struct nfs4_session *session = nfs4_get_session(server); |
863a3c6c | 6521 | |
d9afbd1b TM |
6522 | nfs41_setup_sequence(session, |
6523 | &data->args.seq_args, | |
6524 | &data->res.seq_res, | |
6525 | task); | |
863a3c6c AA |
6526 | } |
6527 | ||
6528 | static void | |
6529 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
6530 | { | |
6531 | struct nfs4_layoutcommit_data *data = calldata; | |
6532 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6533 | ||
6ba7db34 | 6534 | if (!nfs41_sequence_done(task, &data->res.seq_res)) |
863a3c6c AA |
6535 | return; |
6536 | ||
6537 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
6538 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
6539 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
6540 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
6541 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 6542 | task->tk_status = 0; |
e59d27e0 TM |
6543 | break; |
6544 | case 0: | |
863a3c6c AA |
6545 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
6546 | data->res.fattr); | |
e59d27e0 TM |
6547 | break; |
6548 | default: | |
6549 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
6550 | rpc_restart_call_prepare(task); | |
6551 | return; | |
6552 | } | |
6553 | } | |
863a3c6c AA |
6554 | } |
6555 | ||
6556 | static void nfs4_layoutcommit_release(void *calldata) | |
6557 | { | |
6558 | struct nfs4_layoutcommit_data *data = calldata; | |
6559 | ||
db29c089 | 6560 | pnfs_cleanup_layoutcommit(data); |
863a3c6c AA |
6561 | put_rpccred(data->cred); |
6562 | kfree(data); | |
6563 | } | |
6564 | ||
6565 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
6566 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
6567 | .rpc_call_done = nfs4_layoutcommit_done, | |
6568 | .rpc_release = nfs4_layoutcommit_release, | |
6569 | }; | |
6570 | ||
6571 | int | |
ef311537 | 6572 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
6573 | { |
6574 | struct rpc_message msg = { | |
6575 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
6576 | .rpc_argp = &data->args, | |
6577 | .rpc_resp = &data->res, | |
6578 | .rpc_cred = data->cred, | |
6579 | }; | |
6580 | struct rpc_task_setup task_setup_data = { | |
6581 | .task = &data->task, | |
6582 | .rpc_client = NFS_CLIENT(data->args.inode), | |
6583 | .rpc_message = &msg, | |
6584 | .callback_ops = &nfs4_layoutcommit_ops, | |
6585 | .callback_data = data, | |
6586 | .flags = RPC_TASK_ASYNC, | |
6587 | }; | |
6588 | struct rpc_task *task; | |
6589 | int status = 0; | |
6590 | ||
6591 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
6592 | "lbw: %llu inode %lu\n", | |
6593 | data->task.tk_pid, sync, | |
6594 | data->args.lastbytewritten, | |
6595 | data->args.inode->i_ino); | |
6596 | ||
9d12b216 | 6597 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
6598 | task = rpc_run_task(&task_setup_data); |
6599 | if (IS_ERR(task)) | |
6600 | return PTR_ERR(task); | |
ef311537 | 6601 | if (sync == false) |
863a3c6c AA |
6602 | goto out; |
6603 | status = nfs4_wait_for_completion_rpc_task(task); | |
6604 | if (status != 0) | |
6605 | goto out; | |
6606 | status = task->tk_status; | |
6607 | out: | |
6608 | dprintk("%s: status %d\n", __func__, status); | |
6609 | rpc_put_task(task); | |
6610 | return status; | |
6611 | } | |
fca78d6d BS |
6612 | |
6613 | static int | |
6614 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6615 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6616 | { | |
6617 | struct nfs41_secinfo_no_name_args args = { | |
6618 | .style = SECINFO_STYLE_CURRENT_FH, | |
6619 | }; | |
6620 | struct nfs4_secinfo_res res = { | |
6621 | .flavors = flavors, | |
6622 | }; | |
6623 | struct rpc_message msg = { | |
6624 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
6625 | .rpc_argp = &args, | |
6626 | .rpc_resp = &res, | |
6627 | }; | |
6628 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); | |
6629 | } | |
6630 | ||
6631 | static int | |
6632 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6633 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6634 | { | |
6635 | struct nfs4_exception exception = { }; | |
6636 | int err; | |
6637 | do { | |
6638 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6639 | switch (err) { | |
6640 | case 0: | |
6641 | case -NFS4ERR_WRONGSEC: | |
6642 | case -NFS4ERR_NOTSUPP: | |
05e9cfb4 | 6643 | goto out; |
fca78d6d BS |
6644 | default: |
6645 | err = nfs4_handle_exception(server, err, &exception); | |
6646 | } | |
6647 | } while (exception.retry); | |
05e9cfb4 | 6648 | out: |
fca78d6d BS |
6649 | return err; |
6650 | } | |
6651 | ||
6652 | static int | |
6653 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
6654 | struct nfs_fsinfo *info) | |
6655 | { | |
6656 | int err; | |
6657 | struct page *page; | |
6658 | rpc_authflavor_t flavor; | |
6659 | struct nfs4_secinfo_flavors *flavors; | |
6660 | ||
6661 | page = alloc_page(GFP_KERNEL); | |
6662 | if (!page) { | |
6663 | err = -ENOMEM; | |
6664 | goto out; | |
6665 | } | |
6666 | ||
6667 | flavors = page_address(page); | |
6668 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6669 | ||
6670 | /* | |
6671 | * Fall back on "guess and check" method if | |
6672 | * the server doesn't support SECINFO_NO_NAME | |
6673 | */ | |
6674 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
6675 | err = nfs4_find_root_sec(server, fhandle, info); | |
6676 | goto out_freepage; | |
6677 | } | |
6678 | if (err) | |
6679 | goto out_freepage; | |
6680 | ||
6681 | flavor = nfs_find_best_sec(flavors); | |
6682 | if (err == 0) | |
6683 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
6684 | ||
6685 | out_freepage: | |
6686 | put_page(page); | |
6687 | if (err == -EACCES) | |
6688 | return -EPERM; | |
6689 | out: | |
6690 | return err; | |
6691 | } | |
1cab0652 BS |
6692 | |
6693 | static int _nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) | |
7d974794 BS |
6694 | { |
6695 | int status; | |
6696 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 6697 | .stateid = stateid, |
7d974794 BS |
6698 | }; |
6699 | struct nfs41_test_stateid_res res; | |
6700 | struct rpc_message msg = { | |
6701 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
6702 | .rpc_argp = &args, | |
6703 | .rpc_resp = &res, | |
6704 | }; | |
1cab0652 | 6705 | |
38527b15 | 6706 | dprintk("NFS call test_stateid %p\n", stateid); |
9d12b216 | 6707 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
8fe72bac TM |
6708 | nfs4_set_sequence_privileged(&args.seq_args); |
6709 | status = nfs4_call_sync_sequence(server->client, server, &msg, | |
6710 | &args.seq_args, &res.seq_res); | |
38527b15 CL |
6711 | if (status != NFS_OK) { |
6712 | dprintk("NFS reply test_stateid: failed, %d\n", status); | |
377e507d | 6713 | return status; |
38527b15 CL |
6714 | } |
6715 | dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status); | |
377e507d | 6716 | return -res.status; |
7d974794 BS |
6717 | } |
6718 | ||
38527b15 CL |
6719 | /** |
6720 | * nfs41_test_stateid - perform a TEST_STATEID operation | |
6721 | * | |
6722 | * @server: server / transport on which to perform the operation | |
6723 | * @stateid: state ID to test | |
6724 | * | |
6725 | * Returns NFS_OK if the server recognizes that "stateid" is valid. | |
6726 | * Otherwise a negative NFS4ERR value is returned if the operation | |
6727 | * failed or the state ID is not currently valid. | |
6728 | */ | |
1cab0652 | 6729 | static int nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
7d974794 BS |
6730 | { |
6731 | struct nfs4_exception exception = { }; | |
6732 | int err; | |
6733 | do { | |
377e507d CL |
6734 | err = _nfs41_test_stateid(server, stateid); |
6735 | if (err != -NFS4ERR_DELAY) | |
6736 | break; | |
6737 | nfs4_handle_exception(server, err, &exception); | |
7d974794 BS |
6738 | } while (exception.retry); |
6739 | return err; | |
6740 | } | |
9aeda35f | 6741 | |
1cab0652 | 6742 | static int _nfs4_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f | 6743 | { |
9aeda35f | 6744 | struct nfs41_free_stateid_args args = { |
1cab0652 | 6745 | .stateid = stateid, |
9aeda35f BS |
6746 | }; |
6747 | struct nfs41_free_stateid_res res; | |
6748 | struct rpc_message msg = { | |
6749 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
6750 | .rpc_argp = &args, | |
6751 | .rpc_resp = &res, | |
6752 | }; | |
38527b15 | 6753 | int status; |
9aeda35f | 6754 | |
38527b15 | 6755 | dprintk("NFS call free_stateid %p\n", stateid); |
9d12b216 | 6756 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
8fe72bac | 6757 | nfs4_set_sequence_privileged(&args.seq_args); |
38527b15 | 6758 | status = nfs4_call_sync_sequence(server->client, server, &msg, |
8fe72bac | 6759 | &args.seq_args, &res.seq_res); |
38527b15 CL |
6760 | dprintk("NFS reply free_stateid: %d\n", status); |
6761 | return status; | |
9aeda35f BS |
6762 | } |
6763 | ||
38527b15 CL |
6764 | /** |
6765 | * nfs41_free_stateid - perform a FREE_STATEID operation | |
6766 | * | |
6767 | * @server: server / transport on which to perform the operation | |
6768 | * @stateid: state ID to release | |
6769 | * | |
6770 | * Returns NFS_OK if the server freed "stateid". Otherwise a | |
6771 | * negative NFS4ERR value is returned. | |
6772 | */ | |
1cab0652 | 6773 | static int nfs41_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f BS |
6774 | { |
6775 | struct nfs4_exception exception = { }; | |
6776 | int err; | |
6777 | do { | |
377e507d CL |
6778 | err = _nfs4_free_stateid(server, stateid); |
6779 | if (err != -NFS4ERR_DELAY) | |
6780 | break; | |
6781 | nfs4_handle_exception(server, err, &exception); | |
9aeda35f BS |
6782 | } while (exception.retry); |
6783 | return err; | |
6784 | } | |
36281caa TM |
6785 | |
6786 | static bool nfs41_match_stateid(const nfs4_stateid *s1, | |
6787 | const nfs4_stateid *s2) | |
6788 | { | |
2d2f24ad | 6789 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
6790 | return false; |
6791 | ||
2d2f24ad | 6792 | if (s1->seqid == s2->seqid) |
36281caa | 6793 | return true; |
2d2f24ad | 6794 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
6795 | return true; |
6796 | ||
6797 | return false; | |
6798 | } | |
6799 | ||
557134a3 AA |
6800 | #endif /* CONFIG_NFS_V4_1 */ |
6801 | ||
36281caa TM |
6802 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
6803 | const nfs4_stateid *s2) | |
6804 | { | |
f597c537 | 6805 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
6806 | } |
6807 | ||
6808 | ||
17280175 | 6809 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 6810 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 6811 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
6812 | .recover_open = nfs4_open_reclaim, |
6813 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 6814 | .establish_clid = nfs4_init_clientid, |
90a16617 | 6815 | .get_clid_cred = nfs4_get_setclientid_cred, |
05f4c350 | 6816 | .detect_trunking = nfs40_discover_server_trunking, |
1da177e4 LT |
6817 | }; |
6818 | ||
591d71cb | 6819 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 6820 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
6821 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
6822 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
6823 | .recover_open = nfs4_open_reclaim, | |
6824 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 6825 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6826 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 6827 | .reclaim_complete = nfs41_proc_reclaim_complete, |
05f4c350 | 6828 | .detect_trunking = nfs41_discover_server_trunking, |
591d71cb AA |
6829 | }; |
6830 | #endif /* CONFIG_NFS_V4_1 */ | |
6831 | ||
17280175 | 6832 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
6833 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
6834 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
6835 | .recover_open = nfs4_open_expired, | |
6836 | .recover_lock = nfs4_lock_expired, | |
6837 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 6838 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
6839 | }; |
6840 | ||
6841 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 6842 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 6843 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 6844 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
6845 | .recover_open = nfs41_open_expired, |
6846 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 6847 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6848 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 6849 | }; |
591d71cb | 6850 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 6851 | |
17280175 | 6852 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 6853 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 6854 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 6855 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
6856 | }; |
6857 | ||
6858 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 6859 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 6860 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 6861 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 6862 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
6863 | }; |
6864 | #endif | |
6865 | ||
97dc1359 TM |
6866 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
6867 | .minor_version = 0, | |
39c6daae TM |
6868 | .init_caps = NFS_CAP_READDIRPLUS |
6869 | | NFS_CAP_ATOMIC_OPEN | |
6870 | | NFS_CAP_CHANGE_ATTR | |
6871 | | NFS_CAP_POSIX_LOCK, | |
97dc1359 | 6872 | .call_sync = _nfs4_call_sync, |
36281caa | 6873 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 6874 | .find_root_sec = nfs4_find_root_sec, |
c48f4f35 TM |
6875 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
6876 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
6877 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
6878 | }; |
6879 | ||
6880 | #if defined(CONFIG_NFS_V4_1) | |
6881 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
6882 | .minor_version = 1, | |
39c6daae TM |
6883 | .init_caps = NFS_CAP_READDIRPLUS |
6884 | | NFS_CAP_ATOMIC_OPEN | |
6885 | | NFS_CAP_CHANGE_ATTR | |
3b66486c | 6886 | | NFS_CAP_POSIX_LOCK |
49f9a0fa TM |
6887 | | NFS_CAP_STATEID_NFSV41 |
6888 | | NFS_CAP_ATOMIC_OPEN_V1, | |
104287cd | 6889 | .call_sync = nfs4_call_sync_sequence, |
36281caa | 6890 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 6891 | .find_root_sec = nfs41_find_root_sec, |
c48f4f35 TM |
6892 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
6893 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
6894 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
6895 | }; |
6896 | #endif | |
6897 | ||
97dc1359 TM |
6898 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
6899 | [0] = &nfs_v4_0_minor_ops, | |
6900 | #if defined(CONFIG_NFS_V4_1) | |
6901 | [1] = &nfs_v4_1_minor_ops, | |
6902 | #endif | |
6903 | }; | |
6904 | ||
73a79706 BS |
6905 | const struct inode_operations nfs4_dir_inode_operations = { |
6906 | .create = nfs_create, | |
6907 | .lookup = nfs_lookup, | |
6908 | .atomic_open = nfs_atomic_open, | |
6909 | .link = nfs_link, | |
6910 | .unlink = nfs_unlink, | |
6911 | .symlink = nfs_symlink, | |
6912 | .mkdir = nfs_mkdir, | |
6913 | .rmdir = nfs_rmdir, | |
6914 | .mknod = nfs_mknod, | |
6915 | .rename = nfs_rename, | |
6916 | .permission = nfs_permission, | |
6917 | .getattr = nfs_getattr, | |
6918 | .setattr = nfs_setattr, | |
6919 | .getxattr = generic_getxattr, | |
6920 | .setxattr = generic_setxattr, | |
6921 | .listxattr = generic_listxattr, | |
6922 | .removexattr = generic_removexattr, | |
6923 | }; | |
6924 | ||
92e1d5be | 6925 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
6926 | .permission = nfs_permission, |
6927 | .getattr = nfs_getattr, | |
6928 | .setattr = nfs_setattr, | |
64c2ce8b AK |
6929 | .getxattr = generic_getxattr, |
6930 | .setxattr = generic_setxattr, | |
6931 | .listxattr = generic_listxattr, | |
6932 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
6933 | }; |
6934 | ||
509de811 | 6935 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
6936 | .version = 4, /* protocol version */ |
6937 | .dentry_ops = &nfs4_dentry_operations, | |
6938 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 6939 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 6940 | .file_ops = &nfs4_file_operations, |
1da177e4 | 6941 | .getroot = nfs4_proc_get_root, |
281cad46 | 6942 | .submount = nfs4_submount, |
ff9099f2 | 6943 | .try_mount = nfs4_try_mount, |
1da177e4 LT |
6944 | .getattr = nfs4_proc_getattr, |
6945 | .setattr = nfs4_proc_setattr, | |
6946 | .lookup = nfs4_proc_lookup, | |
6947 | .access = nfs4_proc_access, | |
6948 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
6949 | .create = nfs4_proc_create, |
6950 | .remove = nfs4_proc_remove, | |
6951 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 6952 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 LT |
6953 | .unlink_done = nfs4_proc_unlink_done, |
6954 | .rename = nfs4_proc_rename, | |
d3d4152a | 6955 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 6956 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 6957 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
6958 | .link = nfs4_proc_link, |
6959 | .symlink = nfs4_proc_symlink, | |
6960 | .mkdir = nfs4_proc_mkdir, | |
6961 | .rmdir = nfs4_proc_remove, | |
6962 | .readdir = nfs4_proc_readdir, | |
6963 | .mknod = nfs4_proc_mknod, | |
6964 | .statfs = nfs4_proc_statfs, | |
6965 | .fsinfo = nfs4_proc_fsinfo, | |
6966 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 6967 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
6968 | .decode_dirent = nfs4_decode_dirent, |
6969 | .read_setup = nfs4_proc_read_setup, | |
1abb5088 | 6970 | .read_pageio_init = pnfs_pageio_init_read, |
ea7c3303 | 6971 | .read_rpc_prepare = nfs4_proc_read_rpc_prepare, |
ec06c096 | 6972 | .read_done = nfs4_read_done, |
1da177e4 | 6973 | .write_setup = nfs4_proc_write_setup, |
57208fa7 | 6974 | .write_pageio_init = pnfs_pageio_init_write, |
c6cb80d0 | 6975 | .write_rpc_prepare = nfs4_proc_write_rpc_prepare, |
788e7a89 | 6976 | .write_done = nfs4_write_done, |
1da177e4 | 6977 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 6978 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 6979 | .commit_done = nfs4_commit_done, |
1da177e4 | 6980 | .lock = nfs4_proc_lock, |
e50a1c2e | 6981 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 6982 | .close_context = nfs4_close_context, |
2b484297 | 6983 | .open_context = nfs4_atomic_open, |
011e2a7f | 6984 | .have_delegation = nfs4_have_delegation, |
57ec14c5 | 6985 | .return_delegation = nfs4_inode_return_delegation, |
6663ee7f | 6986 | .alloc_client = nfs4_alloc_client, |
45a52a02 | 6987 | .init_client = nfs4_init_client, |
cdb7eced | 6988 | .free_client = nfs4_free_client, |
1179acc6 BS |
6989 | .create_server = nfs4_create_server, |
6990 | .clone_server = nfs_clone_server, | |
1da177e4 LT |
6991 | }; |
6992 | ||
64c2ce8b AK |
6993 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
6994 | .prefix = XATTR_NAME_NFSV4_ACL, | |
6995 | .list = nfs4_xattr_list_nfs4_acl, | |
6996 | .get = nfs4_xattr_get_nfs4_acl, | |
6997 | .set = nfs4_xattr_set_nfs4_acl, | |
6998 | }; | |
6999 | ||
7000 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
7001 | &nfs4_xattr_nfs4_acl_handler, | |
7002 | NULL | |
7003 | }; | |
7004 | ||
1da177e4 LT |
7005 | /* |
7006 | * Local variables: | |
7007 | * c-basic-offset: 8 | |
7008 | * End: | |
7009 | */ |