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 | ||
13437e12 | 1382 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 1383 | { |
e56e0b78 | 1384 | struct nfs4_opendata *opendata; |
864472e9 | 1385 | int ret; |
1da177e4 | 1386 | |
4a1c0893 | 1387 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
ccb46e20 | 1388 | NFS4_OPEN_CLAIM_DELEG_CUR_FH); |
6f220ed5 TM |
1389 | if (IS_ERR(opendata)) |
1390 | return PTR_ERR(opendata); | |
f597c537 | 1391 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); |
864472e9 | 1392 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 1393 | nfs4_opendata_put(opendata); |
864472e9 | 1394 | return ret; |
1da177e4 LT |
1395 | } |
1396 | ||
13437e12 | 1397 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
1398 | { |
1399 | struct nfs4_exception exception = { }; | |
539cd03a | 1400 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
1401 | int err; |
1402 | do { | |
13437e12 | 1403 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
1404 | switch (err) { |
1405 | case 0: | |
965b5d67 TM |
1406 | case -ENOENT: |
1407 | case -ESTALE: | |
1408 | goto out; | |
bcfa49f6 RL |
1409 | case -NFS4ERR_BADSESSION: |
1410 | case -NFS4ERR_BADSLOT: | |
1411 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1412 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1413 | case -NFS4ERR_DEADSESSION: | |
37380e42 | 1414 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
9f594791 | 1415 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); |
37380e42 | 1416 | err = -EAGAIN; |
bcfa49f6 | 1417 | goto out; |
1da177e4 LT |
1418 | case -NFS4ERR_STALE_CLIENTID: |
1419 | case -NFS4ERR_STALE_STATEID: | |
37380e42 | 1420 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
1da177e4 LT |
1421 | case -NFS4ERR_EXPIRED: |
1422 | /* Don't recall a delegation if it was lost */ | |
0400a6b0 | 1423 | nfs4_schedule_lease_recovery(server->nfs_client); |
37380e42 | 1424 | err = -EAGAIN; |
965b5d67 | 1425 | goto out; |
a1d0b5ee | 1426 | case -NFS4ERR_DELEG_REVOKED: |
965b5d67 TM |
1427 | case -NFS4ERR_ADMIN_REVOKED: |
1428 | case -NFS4ERR_BAD_STATEID: | |
a1d0b5ee TM |
1429 | nfs_inode_find_state_and_recover(state->inode, |
1430 | stateid); | |
0400a6b0 | 1431 | nfs4_schedule_stateid_recovery(server, state); |
965b5d67 TM |
1432 | case -ENOMEM: |
1433 | err = 0; | |
1434 | goto out; | |
1da177e4 | 1435 | } |
37380e42 | 1436 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
1da177e4 LT |
1437 | err = nfs4_handle_exception(server, err, &exception); |
1438 | } while (exception.retry); | |
965b5d67 | 1439 | out: |
1da177e4 LT |
1440 | return err; |
1441 | } | |
1442 | ||
cdd4e68b TM |
1443 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1444 | { | |
1445 | struct nfs4_opendata *data = calldata; | |
1446 | ||
1447 | data->rpc_status = task->tk_status; | |
26e976a8 | 1448 | if (data->rpc_status == 0) { |
f597c537 | 1449 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 1450 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1451 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1452 | data->rpc_done = 1; |
26e976a8 | 1453 | } |
cdd4e68b TM |
1454 | } |
1455 | ||
1456 | static void nfs4_open_confirm_release(void *calldata) | |
1457 | { | |
1458 | struct nfs4_opendata *data = calldata; | |
1459 | struct nfs4_state *state = NULL; | |
1460 | ||
1461 | /* If this request hasn't been cancelled, do nothing */ | |
1462 | if (data->cancelled == 0) | |
1463 | goto out_free; | |
1464 | /* In case of error, no cleanup! */ | |
3e309914 | 1465 | if (!data->rpc_done) |
cdd4e68b | 1466 | goto out_free; |
cdd4e68b | 1467 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1468 | if (!IS_ERR(state)) |
643168c2 | 1469 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1470 | out_free: |
c6d00e63 | 1471 | nfs4_opendata_put(data); |
cdd4e68b TM |
1472 | } |
1473 | ||
1474 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1475 | .rpc_call_done = nfs4_open_confirm_done, |
1476 | .rpc_release = nfs4_open_confirm_release, | |
1477 | }; | |
1478 | ||
1479 | /* | |
1480 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1481 | */ | |
1482 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1483 | { | |
1484 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1485 | struct rpc_task *task; | |
5138fde0 TM |
1486 | struct rpc_message msg = { |
1487 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1488 | .rpc_argp = &data->c_arg, | |
1489 | .rpc_resp = &data->c_res, | |
1490 | .rpc_cred = data->owner->so_cred, | |
1491 | }; | |
c970aa85 TM |
1492 | struct rpc_task_setup task_setup_data = { |
1493 | .rpc_client = server->client, | |
5138fde0 | 1494 | .rpc_message = &msg, |
c970aa85 TM |
1495 | .callback_ops = &nfs4_open_confirm_ops, |
1496 | .callback_data = data, | |
101070ca | 1497 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1498 | .flags = RPC_TASK_ASYNC, |
1499 | }; | |
1da177e4 LT |
1500 | int status; |
1501 | ||
c6d00e63 | 1502 | kref_get(&data->kref); |
3e309914 TM |
1503 | data->rpc_done = 0; |
1504 | data->rpc_status = 0; | |
5138fde0 | 1505 | data->timestamp = jiffies; |
c970aa85 | 1506 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1507 | if (IS_ERR(task)) |
cdd4e68b | 1508 | return PTR_ERR(task); |
cdd4e68b TM |
1509 | status = nfs4_wait_for_completion_rpc_task(task); |
1510 | if (status != 0) { | |
1511 | data->cancelled = 1; | |
1512 | smp_wmb(); | |
1513 | } else | |
1514 | status = data->rpc_status; | |
e6b3c4db | 1515 | rpc_put_task(task); |
1da177e4 LT |
1516 | return status; |
1517 | } | |
1518 | ||
24ac23ab | 1519 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1520 | { |
24ac23ab TM |
1521 | struct nfs4_opendata *data = calldata; |
1522 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 1523 | |
24ac23ab | 1524 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
c8da19b9 | 1525 | goto out_wait; |
aac00a8d TM |
1526 | /* |
1527 | * Check if we still need to send an OPEN call, or if we can use | |
1528 | * a delegation instead. | |
1529 | */ | |
1530 | if (data->state != NULL) { | |
1531 | struct nfs_delegation *delegation; | |
1532 | ||
dc0b027d | 1533 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1534 | goto out_no_action; |
aac00a8d TM |
1535 | rcu_read_lock(); |
1536 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
652f89f6 TM |
1537 | if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR && |
1538 | can_open_delegated(delegation, data->o_arg.fmode)) | |
1539 | goto unlock_no_action; | |
aac00a8d TM |
1540 | rcu_read_unlock(); |
1541 | } | |
95b72eb0 | 1542 | /* Update client id. */ |
1f0e890d | 1543 | data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; |
6f220ed5 | 1544 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 1545 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
e23008ec | 1546 | data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0]; |
6f220ed5 TM |
1547 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1548 | } | |
26e976a8 | 1549 | data->timestamp = jiffies; |
035168ab | 1550 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 1551 | &data->o_arg.seq_args, |
2240a9e2 TM |
1552 | &data->o_res.seq_res, |
1553 | task) != 0) | |
1554 | nfs_release_seqid(data->o_arg.seqid); | |
6ee41268 | 1555 | return; |
652f89f6 TM |
1556 | unlock_no_action: |
1557 | rcu_read_unlock(); | |
6ee41268 TM |
1558 | out_no_action: |
1559 | task->tk_action = NULL; | |
c8da19b9 | 1560 | out_wait: |
b75ad4cd | 1561 | nfs4_sequence_done(task, &data->o_res.seq_res); |
b257957e AB |
1562 | } |
1563 | ||
24ac23ab TM |
1564 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1565 | { | |
1566 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1567 | |
24ac23ab | 1568 | data->rpc_status = task->tk_status; |
d898528c | 1569 | |
14516c3a TM |
1570 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1571 | return; | |
d898528c | 1572 | |
24ac23ab | 1573 | if (task->tk_status == 0) { |
807d66d8 TM |
1574 | if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) { |
1575 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1576 | case S_IFREG: |
1577 | break; | |
1578 | case S_IFLNK: | |
24ac23ab | 1579 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1580 | break; |
1581 | case S_IFDIR: | |
24ac23ab | 1582 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1583 | break; |
1584 | default: | |
24ac23ab | 1585 | data->rpc_status = -ENOTDIR; |
807d66d8 | 1586 | } |
6f926b5b | 1587 | } |
26e976a8 | 1588 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1589 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1590 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1591 | } |
3e309914 | 1592 | data->rpc_done = 1; |
24ac23ab | 1593 | } |
6f926b5b | 1594 | |
24ac23ab TM |
1595 | static void nfs4_open_release(void *calldata) |
1596 | { | |
1597 | struct nfs4_opendata *data = calldata; | |
1598 | struct nfs4_state *state = NULL; | |
1599 | ||
1600 | /* If this request hasn't been cancelled, do nothing */ | |
1601 | if (data->cancelled == 0) | |
1602 | goto out_free; | |
1603 | /* In case of error, no cleanup! */ | |
3e309914 | 1604 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1605 | goto out_free; |
1606 | /* In case we need an open_confirm, no cleanup! */ | |
1607 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1608 | goto out_free; | |
24ac23ab | 1609 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1610 | if (!IS_ERR(state)) |
643168c2 | 1611 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1612 | out_free: |
c6d00e63 | 1613 | nfs4_opendata_put(data); |
24ac23ab TM |
1614 | } |
1615 | ||
1616 | static const struct rpc_call_ops nfs4_open_ops = { | |
1617 | .rpc_call_prepare = nfs4_open_prepare, | |
1618 | .rpc_call_done = nfs4_open_done, | |
1619 | .rpc_release = nfs4_open_release, | |
1620 | }; | |
1621 | ||
b257957e | 1622 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) |
24ac23ab TM |
1623 | { |
1624 | struct inode *dir = data->dir->d_inode; | |
1625 | struct nfs_server *server = NFS_SERVER(dir); | |
1626 | struct nfs_openargs *o_arg = &data->o_arg; | |
1627 | struct nfs_openres *o_res = &data->o_res; | |
1628 | struct rpc_task *task; | |
5138fde0 TM |
1629 | struct rpc_message msg = { |
1630 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1631 | .rpc_argp = o_arg, | |
1632 | .rpc_resp = o_res, | |
1633 | .rpc_cred = data->owner->so_cred, | |
1634 | }; | |
c970aa85 TM |
1635 | struct rpc_task_setup task_setup_data = { |
1636 | .rpc_client = server->client, | |
5138fde0 | 1637 | .rpc_message = &msg, |
c970aa85 TM |
1638 | .callback_ops = &nfs4_open_ops, |
1639 | .callback_data = data, | |
101070ca | 1640 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1641 | .flags = RPC_TASK_ASYNC, |
1642 | }; | |
24ac23ab TM |
1643 | int status; |
1644 | ||
9d12b216 | 1645 | nfs41_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 1646 | kref_get(&data->kref); |
3e309914 TM |
1647 | data->rpc_done = 0; |
1648 | data->rpc_status = 0; | |
2ced46c2 | 1649 | data->cancelled = 0; |
b257957e | 1650 | if (isrecover) |
8fe72bac | 1651 | nfs4_set_sequence_privileged(&o_arg->seq_args); |
c970aa85 | 1652 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1653 | if (IS_ERR(task)) |
1654 | return PTR_ERR(task); | |
1655 | status = nfs4_wait_for_completion_rpc_task(task); | |
1656 | if (status != 0) { | |
1657 | data->cancelled = 1; | |
1658 | smp_wmb(); | |
1659 | } else | |
1660 | status = data->rpc_status; | |
1661 | rpc_put_task(task); | |
1662 | ||
1663 | return status; | |
1664 | } | |
1665 | ||
1666 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1667 | { | |
1668 | struct inode *dir = data->dir->d_inode; | |
1669 | struct nfs_openres *o_res = &data->o_res; | |
1670 | int status; | |
1671 | ||
1672 | status = nfs4_run_open_task(data, 1); | |
1673 | if (status != 0 || !data->rpc_done) | |
1674 | return status; | |
1675 | ||
6926afd1 TM |
1676 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
1677 | ||
b257957e AB |
1678 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
1679 | status = _nfs4_proc_open_confirm(data); | |
1680 | if (status != 0) | |
1681 | return status; | |
1682 | } | |
1683 | ||
1684 | return status; | |
1685 | } | |
1686 | ||
6168f62c WAA |
1687 | static int nfs4_opendata_access(struct rpc_cred *cred, |
1688 | struct nfs4_opendata *opendata, | |
f8d9a897 WAA |
1689 | struct nfs4_state *state, fmode_t fmode, |
1690 | int openflags) | |
6168f62c WAA |
1691 | { |
1692 | struct nfs_access_entry cache; | |
1693 | u32 mask; | |
1694 | ||
1695 | /* access call failed or for some reason the server doesn't | |
1696 | * support any access modes -- defer access call until later */ | |
1697 | if (opendata->o_res.access_supported == 0) | |
1698 | return 0; | |
1699 | ||
1700 | mask = 0; | |
bbd3a8ee | 1701 | /* don't check MAY_WRITE - a newly created file may not have |
f8d9a897 WAA |
1702 | * write mode bits, but POSIX allows the creating process to write. |
1703 | * use openflags to check for exec, because fmode won't | |
1704 | * always have FMODE_EXEC set when file open for exec. */ | |
1705 | if (openflags & __FMODE_EXEC) { | |
1706 | /* ONLY check for exec rights */ | |
1707 | mask = MAY_EXEC; | |
1708 | } else if (fmode & FMODE_READ) | |
1709 | mask = MAY_READ; | |
6168f62c WAA |
1710 | |
1711 | cache.cred = cred; | |
1712 | cache.jiffies = jiffies; | |
1713 | nfs_access_set_mask(&cache, opendata->o_res.access_result); | |
1714 | nfs_access_add_cache(state->inode, &cache); | |
1715 | ||
bbd3a8ee | 1716 | if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0) |
6168f62c WAA |
1717 | return 0; |
1718 | ||
1719 | /* even though OPEN succeeded, access is denied. Close the file */ | |
1720 | nfs4_close_state(state, fmode); | |
998f40b5 | 1721 | return -EACCES; |
6168f62c WAA |
1722 | } |
1723 | ||
b257957e AB |
1724 | /* |
1725 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1726 | */ | |
1727 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1728 | { | |
1729 | struct inode *dir = data->dir->d_inode; | |
1730 | struct nfs_server *server = NFS_SERVER(dir); | |
1731 | struct nfs_openargs *o_arg = &data->o_arg; | |
1732 | struct nfs_openres *o_res = &data->o_res; | |
1733 | int status; | |
1734 | ||
1735 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
1736 | if (!data->rpc_done) |
1737 | return status; | |
1738 | if (status != 0) { | |
1739 | if (status == -NFS4ERR_BADNAME && | |
1740 | !(o_arg->open_flags & O_CREAT)) | |
1741 | return -ENOENT; | |
24ac23ab | 1742 | return status; |
08ef7bd3 | 1743 | } |
24ac23ab | 1744 | |
6926afd1 TM |
1745 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
1746 | ||
90ff0c54 | 1747 | if (o_arg->open_flags & O_CREAT) |
56ae19f3 | 1748 | update_changeattr(dir, &o_res->cinfo); |
0df5dd4a TM |
1749 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1750 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1751 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1752 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1753 | if (status != 0) |
24ac23ab | 1754 | return status; |
1da177e4 LT |
1755 | } |
1756 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1757 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1758 | return 0; |
1da177e4 LT |
1759 | } |
1760 | ||
d83217c1 AA |
1761 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1762 | { | |
1763 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1764 | } | |
1765 | ||
1da177e4 LT |
1766 | /* |
1767 | * OPEN_EXPIRED: | |
1768 | * reclaim state on the server after a network partition. | |
1769 | * Assumes caller holds the appropriate lock | |
1770 | */ | |
539cd03a | 1771 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1772 | { |
e56e0b78 | 1773 | struct nfs4_opendata *opendata; |
864472e9 | 1774 | int ret; |
1da177e4 | 1775 | |
4a1c0893 | 1776 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
49f9a0fa | 1777 | NFS4_OPEN_CLAIM_FH); |
6f220ed5 TM |
1778 | if (IS_ERR(opendata)) |
1779 | return PTR_ERR(opendata); | |
864472e9 | 1780 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1781 | if (ret == -ESTALE) |
3d4ff43d | 1782 | d_drop(ctx->dentry); |
c6d00e63 | 1783 | nfs4_opendata_put(opendata); |
864472e9 | 1784 | return ret; |
1da177e4 LT |
1785 | } |
1786 | ||
a9ed2e25 | 1787 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1788 | { |
539cd03a | 1789 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1790 | struct nfs4_exception exception = { }; |
1791 | int err; | |
1792 | ||
1793 | do { | |
539cd03a | 1794 | err = _nfs4_open_expired(ctx, state); |
49f9a0fa TM |
1795 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
1796 | continue; | |
a9ed2e25 TM |
1797 | switch (err) { |
1798 | default: | |
1799 | goto out; | |
1800 | case -NFS4ERR_GRACE: | |
1801 | case -NFS4ERR_DELAY: | |
1802 | nfs4_handle_exception(server, err, &exception); | |
1803 | err = 0; | |
1804 | } | |
202b50dc | 1805 | } while (exception.retry); |
a9ed2e25 | 1806 | out: |
202b50dc TM |
1807 | return err; |
1808 | } | |
1809 | ||
1da177e4 LT |
1810 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1811 | { | |
1da177e4 | 1812 | struct nfs_open_context *ctx; |
864472e9 | 1813 | int ret; |
1da177e4 | 1814 | |
864472e9 TM |
1815 | ctx = nfs4_state_find_open_context(state); |
1816 | if (IS_ERR(ctx)) | |
91876b13 | 1817 | return -EAGAIN; |
539cd03a | 1818 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1819 | put_nfs_open_context(ctx); |
1820 | return ret; | |
1da177e4 LT |
1821 | } |
1822 | ||
f062eb6c | 1823 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd | 1824 | static void nfs41_clear_delegation_stateid(struct nfs4_state *state) |
f062eb6c | 1825 | { |
f062eb6c | 1826 | struct nfs_server *server = NFS_SERVER(state->inode); |
3e60ffdd CL |
1827 | nfs4_stateid *stateid = &state->stateid; |
1828 | int status; | |
1829 | ||
1830 | /* If a state reset has been done, test_stateid is unneeded */ | |
1831 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
1832 | return; | |
1833 | ||
1834 | status = nfs41_test_stateid(server, stateid); | |
1835 | if (status != NFS_OK) { | |
1836 | /* Free the stateid unless the server explicitly | |
1837 | * informs us the stateid is unrecognized. */ | |
1838 | if (status != -NFS4ERR_BAD_STATEID) | |
1839 | nfs41_free_stateid(server, stateid); | |
6938867e | 1840 | nfs_remove_bad_delegation(state->inode); |
3e60ffdd | 1841 | |
6938867e BS |
1842 | write_seqlock(&state->seqlock); |
1843 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
1844 | write_sequnlock(&state->seqlock); | |
3e60ffdd CL |
1845 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
1846 | } | |
1847 | } | |
1848 | ||
1849 | /** | |
1850 | * nfs41_check_open_stateid - possibly free an open stateid | |
1851 | * | |
1852 | * @state: NFSv4 state for an inode | |
1853 | * | |
1854 | * Returns NFS_OK if recovery for this stateid is now finished. | |
1855 | * Otherwise a negative NFS4ERR value is returned. | |
1856 | */ | |
1857 | static int nfs41_check_open_stateid(struct nfs4_state *state) | |
1858 | { | |
1859 | struct nfs_server *server = NFS_SERVER(state->inode); | |
fcb6d9c6 | 1860 | nfs4_stateid *stateid = &state->open_stateid; |
3e60ffdd CL |
1861 | int status; |
1862 | ||
1863 | /* If a state reset has been done, test_stateid is unneeded */ | |
1864 | if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) && | |
1865 | (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) && | |
1866 | (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0)) | |
1867 | return -NFS4ERR_BAD_STATEID; | |
1868 | ||
1869 | status = nfs41_test_stateid(server, stateid); | |
1870 | if (status != NFS_OK) { | |
1871 | /* Free the stateid unless the server explicitly | |
1872 | * informs us the stateid is unrecognized. */ | |
1873 | if (status != -NFS4ERR_BAD_STATEID) | |
1874 | nfs41_free_stateid(server, stateid); | |
1875 | ||
1876 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1877 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1878 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
b01dd1d8 BS |
1879 | } |
1880 | return status; | |
1881 | } | |
1882 | ||
1883 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
1884 | { | |
eb64cf96 | 1885 | int status; |
b01dd1d8 | 1886 | |
3e60ffdd CL |
1887 | nfs41_clear_delegation_stateid(state); |
1888 | status = nfs41_check_open_stateid(state); | |
eb64cf96 CL |
1889 | if (status != NFS_OK) |
1890 | status = nfs4_open_expired(sp, state); | |
1891 | return status; | |
f062eb6c BS |
1892 | } |
1893 | #endif | |
1894 | ||
aa53ed54 JL |
1895 | /* |
1896 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1897 | * fields corresponding to attributes that were used to store the verifier. | |
1898 | * Make sure we clobber those fields in the later setattr call | |
1899 | */ | |
1900 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1901 | { | |
1902 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1903 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1904 | sattr->ia_valid |= ATTR_ATIME; | |
1905 | ||
1906 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1907 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1908 | sattr->ia_valid |= ATTR_MTIME; | |
1909 | } | |
1910 | ||
c21443c2 TM |
1911 | static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, |
1912 | fmode_t fmode, | |
1913 | int flags, | |
1914 | struct nfs4_state **res) | |
1915 | { | |
1916 | struct nfs4_state_owner *sp = opendata->owner; | |
1917 | struct nfs_server *server = sp->so_server; | |
1918 | struct nfs4_state *state; | |
1919 | unsigned int seq; | |
1920 | int ret; | |
1921 | ||
1922 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); | |
1923 | ||
1924 | ret = _nfs4_proc_open(opendata); | |
1925 | if (ret != 0) | |
1926 | goto out; | |
1927 | ||
1928 | state = nfs4_opendata_to_nfs4_state(opendata); | |
1929 | ret = PTR_ERR(state); | |
1930 | if (IS_ERR(state)) | |
1931 | goto out; | |
1932 | if (server->caps & NFS_CAP_POSIX_LOCK) | |
1933 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); | |
1934 | ||
1935 | ret = nfs4_opendata_access(sp->so_cred, opendata, state, fmode, flags); | |
1936 | if (ret != 0) | |
1937 | goto out; | |
1938 | ||
91876b13 | 1939 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) |
c21443c2 | 1940 | nfs4_schedule_stateid_recovery(server, state); |
c21443c2 TM |
1941 | *res = state; |
1942 | out: | |
1943 | return ret; | |
1944 | } | |
1945 | ||
1da177e4 | 1946 | /* |
24ac23ab | 1947 | * Returns a referenced nfs4_state |
1da177e4 | 1948 | */ |
82be417a AA |
1949 | static int _nfs4_do_open(struct inode *dir, |
1950 | struct dentry *dentry, | |
1951 | fmode_t fmode, | |
1952 | int flags, | |
1953 | struct iattr *sattr, | |
1954 | struct rpc_cred *cred, | |
1955 | struct nfs4_state **res, | |
1956 | struct nfs4_threshold **ctx_th) | |
1da177e4 LT |
1957 | { |
1958 | struct nfs4_state_owner *sp; | |
1959 | struct nfs4_state *state = NULL; | |
1960 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1961 | struct nfs4_opendata *opendata; |
49f9a0fa | 1962 | enum open_claim_type4 claim = NFS4_OPEN_CLAIM_NULL; |
aac00a8d | 1963 | int status; |
1da177e4 LT |
1964 | |
1965 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 1966 | status = -ENOMEM; |
d1e284d5 TM |
1967 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
1968 | if (sp == NULL) { | |
1da177e4 LT |
1969 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
1970 | goto out_err; | |
1971 | } | |
58d9714a TM |
1972 | status = nfs4_recover_expired_lease(server); |
1973 | if (status != 0) | |
b4454fe1 | 1974 | goto err_put_state_owner; |
82a2c1b7 AV |
1975 | if (dentry->d_inode != NULL) |
1976 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 1977 | status = -ENOMEM; |
49f9a0fa TM |
1978 | if (dentry->d_inode) |
1979 | claim = NFS4_OPEN_CLAIM_FH; | |
4a1c0893 | 1980 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, |
49f9a0fa | 1981 | claim, GFP_KERNEL); |
e56e0b78 | 1982 | if (opendata == NULL) |
95d35cb4 | 1983 | goto err_put_state_owner; |
1da177e4 | 1984 | |
82be417a AA |
1985 | if (ctx_th && server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
1986 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
1987 | if (!opendata->f_attr.mdsthreshold) | |
1988 | goto err_opendata_put; | |
1549210f | 1989 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 1990 | } |
82a2c1b7 AV |
1991 | if (dentry->d_inode != NULL) |
1992 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 1993 | |
c21443c2 | 1994 | status = _nfs4_open_and_get_state(opendata, fmode, flags, &state); |
6168f62c WAA |
1995 | if (status != 0) |
1996 | goto err_opendata_put; | |
1997 | ||
0ab64e0e TM |
1998 | if (opendata->o_arg.open_flags & O_EXCL) { |
1999 | nfs4_exclusive_attrset(opendata, sattr); | |
2000 | ||
2001 | nfs_fattr_init(opendata->o_res.f_attr); | |
2002 | status = nfs4_do_setattr(state->inode, cred, | |
2003 | opendata->o_res.f_attr, sattr, | |
2004 | state); | |
2005 | if (status == 0) | |
2006 | nfs_setattr_update_inode(state->inode, sattr); | |
2007 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
2008 | } | |
82be417a AA |
2009 | |
2010 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) | |
2011 | *ctx_th = opendata->f_attr.mdsthreshold; | |
2012 | else | |
2013 | kfree(opendata->f_attr.mdsthreshold); | |
2014 | opendata->f_attr.mdsthreshold = NULL; | |
2015 | ||
c6d00e63 | 2016 | nfs4_opendata_put(opendata); |
1da177e4 | 2017 | nfs4_put_state_owner(sp); |
1da177e4 LT |
2018 | *res = state; |
2019 | return 0; | |
c6d00e63 | 2020 | err_opendata_put: |
82be417a | 2021 | kfree(opendata->f_attr.mdsthreshold); |
c6d00e63 | 2022 | nfs4_opendata_put(opendata); |
e56e0b78 TM |
2023 | err_put_state_owner: |
2024 | nfs4_put_state_owner(sp); | |
1da177e4 | 2025 | out_err: |
1da177e4 LT |
2026 | *res = NULL; |
2027 | return status; | |
2028 | } | |
2029 | ||
2030 | ||
82be417a AA |
2031 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
2032 | struct dentry *dentry, | |
2033 | fmode_t fmode, | |
2034 | int flags, | |
2035 | struct iattr *sattr, | |
2036 | struct rpc_cred *cred, | |
2037 | struct nfs4_threshold **ctx_th) | |
1da177e4 | 2038 | { |
49f9a0fa | 2039 | struct nfs_server *server = NFS_SERVER(dir); |
1da177e4 LT |
2040 | struct nfs4_exception exception = { }; |
2041 | struct nfs4_state *res; | |
2042 | int status; | |
2043 | ||
6168f62c | 2044 | fmode &= FMODE_READ|FMODE_WRITE|FMODE_EXEC; |
1da177e4 | 2045 | do { |
82be417a AA |
2046 | status = _nfs4_do_open(dir, dentry, fmode, flags, sattr, cred, |
2047 | &res, ctx_th); | |
1da177e4 LT |
2048 | if (status == 0) |
2049 | break; | |
2050 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
2051 | * book-keeping w.r.t. state-changing operations | |
2052 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
2053 | * It is actually a sign of a bug on the client or on the server. | |
2054 | * | |
2055 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 2056 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
2057 | * have unhashed the old state_owner for us, and that we can |
2058 | * therefore safely retry using a new one. We should still warn | |
2059 | * the user though... | |
2060 | */ | |
2061 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 2062 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
2063 | " returned a bad sequence-id error!\n", |
2064 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
2065 | exception.retry = 1; |
2066 | continue; | |
2067 | } | |
550f5747 TM |
2068 | /* |
2069 | * BAD_STATEID on OPEN means that the server cancelled our | |
2070 | * state before it received the OPEN_CONFIRM. | |
2071 | * Recover by retrying the request as per the discussion | |
2072 | * on Page 181 of RFC3530. | |
2073 | */ | |
2074 | if (status == -NFS4ERR_BAD_STATEID) { | |
2075 | exception.retry = 1; | |
2076 | continue; | |
2077 | } | |
aac00a8d TM |
2078 | if (status == -EAGAIN) { |
2079 | /* We must have found a delegation */ | |
2080 | exception.retry = 1; | |
2081 | continue; | |
2082 | } | |
49f9a0fa TM |
2083 | if (nfs4_clear_cap_atomic_open_v1(server, status, &exception)) |
2084 | continue; | |
2085 | res = ERR_PTR(nfs4_handle_exception(server, | |
1da177e4 LT |
2086 | status, &exception)); |
2087 | } while (exception.retry); | |
2088 | return res; | |
2089 | } | |
2090 | ||
659bfcd6 TM |
2091 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2092 | struct nfs_fattr *fattr, struct iattr *sattr, | |
2093 | struct nfs4_state *state) | |
1da177e4 | 2094 | { |
3e4f6290 | 2095 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 2096 | struct nfs_setattrargs arg = { |
3e4f6290 | 2097 | .fh = NFS_FH(inode), |
1da177e4 LT |
2098 | .iap = sattr, |
2099 | .server = server, | |
2100 | .bitmask = server->attr_bitmask, | |
2101 | }; | |
2102 | struct nfs_setattrres res = { | |
2103 | .fattr = fattr, | |
2104 | .server = server, | |
2105 | }; | |
2106 | struct rpc_message msg = { | |
659bfcd6 TM |
2107 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
2108 | .rpc_argp = &arg, | |
2109 | .rpc_resp = &res, | |
2110 | .rpc_cred = cred, | |
1da177e4 | 2111 | }; |
26e976a8 | 2112 | unsigned long timestamp = jiffies; |
65e4308d | 2113 | int status; |
1da177e4 | 2114 | |
0e574af1 | 2115 | nfs_fattr_init(fattr); |
1da177e4 | 2116 | |
5d422301 | 2117 | if (state != NULL && nfs4_valid_open_stateid(state)) { |
2a369153 TM |
2118 | struct nfs_lockowner lockowner = { |
2119 | .l_owner = current->files, | |
2120 | .l_pid = current->tgid, | |
2121 | }; | |
4fc8796d | 2122 | nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, |
2a369153 | 2123 | &lockowner); |
4fc8796d TM |
2124 | } else if (nfs4_copy_delegation_stateid(&arg.stateid, inode, |
2125 | FMODE_WRITE)) { | |
3e4f6290 | 2126 | /* Use that stateid */ |
08e9eac4 | 2127 | } else |
f597c537 | 2128 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 2129 | |
7c513058 | 2130 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
2131 | if (status == 0 && state != NULL) |
2132 | renew_lease(server, timestamp); | |
65e4308d | 2133 | return status; |
1da177e4 LT |
2134 | } |
2135 | ||
659bfcd6 TM |
2136 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2137 | struct nfs_fattr *fattr, struct iattr *sattr, | |
2138 | struct nfs4_state *state) | |
1da177e4 | 2139 | { |
3e4f6290 | 2140 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
2141 | struct nfs4_exception exception = { |
2142 | .state = state, | |
3114ea7a | 2143 | .inode = inode, |
a1d0b5ee | 2144 | }; |
1da177e4 LT |
2145 | int err; |
2146 | do { | |
451146be TM |
2147 | err = _nfs4_do_setattr(inode, cred, fattr, sattr, state); |
2148 | switch (err) { | |
2149 | case -NFS4ERR_OPENMODE: | |
2150 | if (state && !(state->state & FMODE_WRITE)) { | |
2151 | err = -EBADF; | |
2152 | if (sattr->ia_valid & ATTR_OPEN) | |
2153 | err = -EACCES; | |
2154 | goto out; | |
2155 | } | |
2156 | } | |
2157 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 2158 | } while (exception.retry); |
451146be | 2159 | out: |
1da177e4 LT |
2160 | return err; |
2161 | } | |
2162 | ||
2163 | struct nfs4_closedata { | |
2164 | struct inode *inode; | |
2165 | struct nfs4_state *state; | |
2166 | struct nfs_closeargs arg; | |
2167 | struct nfs_closeres res; | |
516a6af6 | 2168 | struct nfs_fattr fattr; |
26e976a8 | 2169 | unsigned long timestamp; |
f7e8917a FI |
2170 | bool roc; |
2171 | u32 roc_barrier; | |
1da177e4 LT |
2172 | }; |
2173 | ||
963d8fe5 | 2174 | static void nfs4_free_closedata(void *data) |
9512135d | 2175 | { |
963d8fe5 TM |
2176 | struct nfs4_closedata *calldata = data; |
2177 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 2178 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 2179 | |
f7e8917a FI |
2180 | if (calldata->roc) |
2181 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
2182 | nfs4_put_open_state(calldata->state); |
2183 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 2184 | nfs4_put_state_owner(sp); |
322b2b90 | 2185 | nfs_sb_deactive(sb); |
9512135d TM |
2186 | kfree(calldata); |
2187 | } | |
2188 | ||
88069f77 TM |
2189 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
2190 | fmode_t fmode) | |
2191 | { | |
2192 | spin_lock(&state->owner->so_lock); | |
2193 | if (!(fmode & FMODE_READ)) | |
2194 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2195 | if (!(fmode & FMODE_WRITE)) | |
2196 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2197 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
2198 | spin_unlock(&state->owner->so_lock); | |
2199 | } | |
2200 | ||
963d8fe5 | 2201 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2202 | { |
963d8fe5 | 2203 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2204 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
2205 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
2206 | ||
a3ca5651 | 2207 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2208 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2209 | return; | |
1da177e4 LT |
2210 | /* hmm. we are done with the inode, and in the process of freeing |
2211 | * the state_owner. we keep this around to process errors | |
2212 | */ | |
1da177e4 LT |
2213 | switch (task->tk_status) { |
2214 | case 0: | |
f7e8917a FI |
2215 | if (calldata->roc) |
2216 | pnfs_roc_set_barrier(state->inode, | |
2217 | calldata->roc_barrier); | |
45328c35 | 2218 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 2219 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
2220 | nfs4_close_clear_stateid_flags(state, |
2221 | calldata->arg.fmode); | |
1da177e4 LT |
2222 | break; |
2223 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
2224 | case -NFS4ERR_OLD_STATEID: |
2225 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2226 | case -NFS4ERR_EXPIRED: |
dc0b027d | 2227 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2228 | break; |
1da177e4 | 2229 | default: |
72211dbe TM |
2230 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
2231 | rpc_restart_call_prepare(task); | |
1da177e4 | 2232 | } |
72211dbe | 2233 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2234 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2235 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2236 | } |
2237 | ||
4ce70ada | 2238 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2239 | { |
4ce70ada | 2240 | struct nfs4_closedata *calldata = data; |
9512135d | 2241 | struct nfs4_state *state = calldata->state; |
7fdab069 | 2242 | struct inode *inode = calldata->inode; |
88069f77 | 2243 | int call_close = 0; |
9512135d | 2244 | |
a3ca5651 | 2245 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2246 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 2247 | goto out_wait; |
003707c7 | 2248 | |
88069f77 TM |
2249 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
2250 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 2251 | spin_lock(&state->owner->so_lock); |
003707c7 | 2252 | /* Calculate the change in open mode */ |
e7616923 | 2253 | if (state->n_rdwr == 0) { |
003707c7 | 2254 | if (state->n_rdonly == 0) { |
88069f77 TM |
2255 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
2256 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2257 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
2258 | } |
2259 | if (state->n_wronly == 0) { | |
88069f77 TM |
2260 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
2261 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2262 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 2263 | } |
e7616923 | 2264 | } |
5d422301 TM |
2265 | if (!nfs4_valid_open_stateid(state)) |
2266 | call_close = 0; | |
4cecb76f | 2267 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2268 | |
2269 | if (!call_close) { | |
963d8fe5 | 2270 | /* Note: exit _without_ calling nfs4_close_done */ |
c8da19b9 | 2271 | goto out_no_action; |
9512135d | 2272 | } |
88069f77 | 2273 | |
f7e8917a | 2274 | if (calldata->arg.fmode == 0) { |
88069f77 | 2275 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a | 2276 | if (calldata->roc && |
7fdab069 | 2277 | pnfs_roc_drain(inode, &calldata->roc_barrier, task)) |
c8da19b9 | 2278 | goto out_wait; |
f7e8917a | 2279 | } |
88069f77 | 2280 | |
516a6af6 | 2281 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2282 | calldata->timestamp = jiffies; |
7fdab069 | 2283 | if (nfs4_setup_sequence(NFS_SERVER(inode), |
9d12b216 TM |
2284 | &calldata->arg.seq_args, |
2285 | &calldata->res.seq_res, | |
2240a9e2 TM |
2286 | task) != 0) |
2287 | nfs_release_seqid(calldata->arg.seqid); | |
a3ca5651 | 2288 | dprintk("%s: done!\n", __func__); |
c8da19b9 TM |
2289 | return; |
2290 | out_no_action: | |
2291 | task->tk_action = NULL; | |
2292 | out_wait: | |
2293 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
1da177e4 LT |
2294 | } |
2295 | ||
963d8fe5 | 2296 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2297 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2298 | .rpc_call_done = nfs4_close_done, |
2299 | .rpc_release = nfs4_free_closedata, | |
2300 | }; | |
2301 | ||
1da177e4 LT |
2302 | /* |
2303 | * It is possible for data to be read/written from a mem-mapped file | |
2304 | * after the sys_close call (which hits the vfs layer as a flush). | |
2305 | * This means that we can't safely call nfsv4 close on a file until | |
2306 | * the inode is cleared. This in turn means that we are not good | |
2307 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2308 | * share state even when we are done with one of the three share | |
2309 | * stateid's in the inode. | |
2310 | * | |
2311 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2312 | */ | |
1f7977c1 | 2313 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) |
1da177e4 | 2314 | { |
4a35bd41 | 2315 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2316 | struct nfs4_closedata *calldata; |
b39e625b TM |
2317 | struct nfs4_state_owner *sp = state->owner; |
2318 | struct rpc_task *task; | |
5138fde0 TM |
2319 | struct rpc_message msg = { |
2320 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2321 | .rpc_cred = state->owner->so_cred, | |
2322 | }; | |
c970aa85 TM |
2323 | struct rpc_task_setup task_setup_data = { |
2324 | .rpc_client = server->client, | |
5138fde0 | 2325 | .rpc_message = &msg, |
c970aa85 | 2326 | .callback_ops = &nfs4_close_ops, |
101070ca | 2327 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2328 | .flags = RPC_TASK_ASYNC, |
2329 | }; | |
9512135d | 2330 | int status = -ENOMEM; |
1da177e4 | 2331 | |
8535b2be | 2332 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2333 | if (calldata == NULL) |
9512135d | 2334 | goto out; |
9d12b216 | 2335 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2336 | calldata->inode = state->inode; |
1da177e4 | 2337 | calldata->state = state; |
4a35bd41 | 2338 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2339 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2340 | /* Serialization for the sequence id */ |
8535b2be | 2341 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2342 | if (calldata->arg.seqid == NULL) |
2343 | goto out_free_calldata; | |
dc0b027d | 2344 | calldata->arg.fmode = 0; |
a65318bf | 2345 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2346 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2347 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2348 | calldata->res.server = server; |
1f7977c1 | 2349 | calldata->roc = pnfs_roc(state->inode); |
643168c2 | 2350 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2351 | |
1174dd1f TM |
2352 | msg.rpc_argp = &calldata->arg; |
2353 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2354 | task_setup_data.callback_data = calldata; |
2355 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2356 | if (IS_ERR(task)) |
2357 | return PTR_ERR(task); | |
a49c3c77 TM |
2358 | status = 0; |
2359 | if (wait) | |
2360 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2361 | rpc_put_task(task); |
a49c3c77 | 2362 | return status; |
9512135d TM |
2363 | out_free_calldata: |
2364 | kfree(calldata); | |
2365 | out: | |
b39e625b TM |
2366 | nfs4_put_open_state(state); |
2367 | nfs4_put_state_owner(sp); | |
9512135d | 2368 | return status; |
1da177e4 LT |
2369 | } |
2370 | ||
2b484297 | 2371 | static struct inode * |
cd9a1c0e | 2372 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2373 | { |
1da177e4 | 2374 | struct nfs4_state *state; |
1da177e4 | 2375 | |
565277f6 | 2376 | /* Protect against concurrent sillydeletes */ |
82be417a AA |
2377 | state = nfs4_do_open(dir, ctx->dentry, ctx->mode, open_flags, attr, |
2378 | ctx->cred, &ctx->mdsthreshold); | |
f46e0bd3 TM |
2379 | if (IS_ERR(state)) |
2380 | return ERR_CAST(state); | |
cd9a1c0e | 2381 | ctx->state = state; |
f46e0bd3 | 2382 | return igrab(state->inode); |
1da177e4 LT |
2383 | } |
2384 | ||
1185a552 | 2385 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2386 | { |
2387 | if (ctx->state == NULL) | |
2388 | return; | |
2389 | if (is_sync) | |
643168c2 | 2390 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2391 | else |
643168c2 | 2392 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2393 | } |
1da177e4 LT |
2394 | |
2395 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2396 | { | |
43652ad5 BH |
2397 | struct nfs4_server_caps_arg args = { |
2398 | .fhandle = fhandle, | |
2399 | }; | |
1da177e4 LT |
2400 | struct nfs4_server_caps_res res = {}; |
2401 | struct rpc_message msg = { | |
2402 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2403 | .rpc_argp = &args, |
1da177e4 LT |
2404 | .rpc_resp = &res, |
2405 | }; | |
2406 | int status; | |
2407 | ||
7c513058 | 2408 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2409 | if (status == 0) { |
2410 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2411 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2412 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2413 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2414 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2415 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2416 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2417 | server->caps |= NFS_CAP_ACLS; | |
2418 | if (res.has_links != 0) | |
2419 | server->caps |= NFS_CAP_HARDLINKS; | |
2420 | if (res.has_symlinks != 0) | |
2421 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2422 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2423 | server->caps |= NFS_CAP_FILEID; | |
2424 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2425 | server->caps |= NFS_CAP_MODE; | |
2426 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2427 | server->caps |= NFS_CAP_NLINK; | |
2428 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2429 | server->caps |= NFS_CAP_OWNER; | |
2430 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2431 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2432 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2433 | server->caps |= NFS_CAP_ATIME; | |
2434 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2435 | server->caps |= NFS_CAP_CTIME; | |
2436 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2437 | server->caps |= NFS_CAP_MTIME; | |
2438 | ||
a65318bf TM |
2439 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2440 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2441 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 | 2442 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 2443 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 2444 | } |
cccef3b9 | 2445 | |
1da177e4 LT |
2446 | return status; |
2447 | } | |
2448 | ||
55a97593 | 2449 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2450 | { |
2451 | struct nfs4_exception exception = { }; | |
2452 | int err; | |
2453 | do { | |
2454 | err = nfs4_handle_exception(server, | |
2455 | _nfs4_server_capabilities(server, fhandle), | |
2456 | &exception); | |
2457 | } while (exception.retry); | |
2458 | return err; | |
2459 | } | |
2460 | ||
2461 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2462 | struct nfs_fsinfo *info) | |
2463 | { | |
1da177e4 LT |
2464 | struct nfs4_lookup_root_arg args = { |
2465 | .bitmask = nfs4_fattr_bitmap, | |
2466 | }; | |
2467 | struct nfs4_lookup_res res = { | |
2468 | .server = server, | |
0e574af1 | 2469 | .fattr = info->fattr, |
1da177e4 LT |
2470 | .fh = fhandle, |
2471 | }; | |
2472 | struct rpc_message msg = { | |
2473 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2474 | .rpc_argp = &args, | |
2475 | .rpc_resp = &res, | |
2476 | }; | |
008f55d0 | 2477 | |
0e574af1 | 2478 | nfs_fattr_init(info->fattr); |
7c513058 | 2479 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2480 | } |
2481 | ||
2482 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2483 | struct nfs_fsinfo *info) | |
2484 | { | |
2485 | struct nfs4_exception exception = { }; | |
2486 | int err; | |
2487 | do { | |
fb8a5ba8 BS |
2488 | err = _nfs4_lookup_root(server, fhandle, info); |
2489 | switch (err) { | |
2490 | case 0: | |
2491 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 2492 | goto out; |
fb8a5ba8 BS |
2493 | default: |
2494 | err = nfs4_handle_exception(server, err, &exception); | |
2495 | } | |
1da177e4 | 2496 | } while (exception.retry); |
05e9cfb4 | 2497 | out: |
1da177e4 LT |
2498 | return err; |
2499 | } | |
2500 | ||
8f70e95f BS |
2501 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2502 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2503 | { | |
2504 | struct rpc_auth *auth; | |
2505 | int ret; | |
2506 | ||
2507 | auth = rpcauth_create(flavor, server->client); | |
e8d920c5 | 2508 | if (IS_ERR(auth)) { |
75bc8821 | 2509 | ret = -EACCES; |
8f70e95f BS |
2510 | goto out; |
2511 | } | |
2512 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2513 | out: |
2514 | return ret; | |
2515 | } | |
2516 | ||
9a744ba3 CL |
2517 | /* |
2518 | * Retry pseudoroot lookup with various security flavors. We do this when: | |
2519 | * | |
2520 | * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC | |
2521 | * NFSv4.1: the server does not support the SECINFO_NO_NAME operation | |
2522 | * | |
2523 | * Returns zero on success, or a negative NFS4ERR value, or a | |
2524 | * negative errno value. | |
2525 | */ | |
801a16dc | 2526 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2527 | struct nfs_fsinfo *info) |
1da177e4 | 2528 | { |
9a744ba3 CL |
2529 | /* Per 3530bis 15.33.5 */ |
2530 | static const rpc_authflavor_t flav_array[] = { | |
2531 | RPC_AUTH_GSS_KRB5P, | |
2532 | RPC_AUTH_GSS_KRB5I, | |
2533 | RPC_AUTH_GSS_KRB5, | |
2534 | RPC_AUTH_NULL, | |
2535 | }; | |
2536 | int status = -EPERM; | |
2537 | size_t i; | |
6a1a1e34 | 2538 | |
9a744ba3 | 2539 | for (i = 0; i < ARRAY_SIZE(flav_array); i++) { |
8f70e95f | 2540 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); |
fb8a5ba8 | 2541 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2542 | continue; |
2543 | break; | |
8f70e95f | 2544 | } |
9a744ba3 | 2545 | |
fb8a5ba8 BS |
2546 | /* |
2547 | * -EACCESS could mean that the user doesn't have correct permissions | |
2548 | * to access the mount. It could also mean that we tried to mount | |
2549 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2550 | * existing mount programs don't handle -EACCES very well so it should | |
2551 | * be mapped to -EPERM instead. | |
2552 | */ | |
2553 | if (status == -EACCES) | |
2554 | status = -EPERM; | |
801a16dc BS |
2555 | return status; |
2556 | } | |
2557 | ||
2ed4b95b CL |
2558 | static int nfs4_do_find_root_sec(struct nfs_server *server, |
2559 | struct nfs_fh *fhandle, struct nfs_fsinfo *info) | |
2560 | { | |
2561 | int mv = server->nfs_client->cl_minorversion; | |
2562 | return nfs_v4_minor_ops[mv]->find_root_sec(server, fhandle, info); | |
2563 | } | |
2564 | ||
2565 | /** | |
2566 | * nfs4_proc_get_rootfh - get file handle for server's pseudoroot | |
2567 | * @server: initialized nfs_server handle | |
2568 | * @fhandle: we fill in the pseudo-fs root file handle | |
2569 | * @info: we fill in an FSINFO struct | |
2570 | * | |
2571 | * Returns zero on success, or a negative errno. | |
801a16dc | 2572 | */ |
3028eb2b BS |
2573 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
2574 | struct nfs_fsinfo *info) | |
801a16dc | 2575 | { |
2ed4b95b CL |
2576 | int status; |
2577 | ||
2578 | status = nfs4_lookup_root(server, fhandle, info); | |
2579 | if ((status == -NFS4ERR_WRONGSEC) && | |
2580 | !(server->flags & NFS_MOUNT_SECFLAVOUR)) | |
2581 | status = nfs4_do_find_root_sec(server, fhandle, info); | |
2582 | ||
1da177e4 LT |
2583 | if (status == 0) |
2584 | status = nfs4_server_capabilities(server, fhandle); | |
2585 | if (status == 0) | |
2586 | status = nfs4_do_fsinfo(server, fhandle, info); | |
2ed4b95b | 2587 | |
c12e87f4 | 2588 | return nfs4_map_errors(status); |
1da177e4 LT |
2589 | } |
2590 | ||
bae36241 BS |
2591 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
2592 | struct nfs_fsinfo *info) | |
2593 | { | |
2594 | int error; | |
2595 | struct nfs_fattr *fattr = info->fattr; | |
2596 | ||
2597 | error = nfs4_server_capabilities(server, mntfh); | |
2598 | if (error < 0) { | |
2599 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
2600 | return error; | |
2601 | } | |
2602 | ||
2603 | error = nfs4_proc_getattr(server, mntfh, fattr); | |
2604 | if (error < 0) { | |
2605 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
2606 | return error; | |
2607 | } | |
2608 | ||
2609 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
2610 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
2611 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
2612 | ||
2613 | return error; | |
2614 | } | |
2615 | ||
6b97fd3d MN |
2616 | /* |
2617 | * Get locations and (maybe) other attributes of a referral. | |
2618 | * Note that we'll actually follow the referral later when | |
2619 | * we detect fsid mismatch in inode revalidation | |
2620 | */ | |
f05d147f BS |
2621 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
2622 | const struct qstr *name, struct nfs_fattr *fattr, | |
2623 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
2624 | { |
2625 | int status = -ENOMEM; | |
2626 | struct page *page = NULL; | |
2627 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2628 | |
2629 | page = alloc_page(GFP_KERNEL); | |
2630 | if (page == NULL) | |
2631 | goto out; | |
2632 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2633 | if (locations == NULL) | |
2634 | goto out; | |
2635 | ||
f05d147f | 2636 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
2637 | if (status != 0) |
2638 | goto out; | |
2639 | /* Make sure server returned a different fsid for the referral */ | |
2640 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2641 | dprintk("%s: server did not return a different fsid for" |
2642 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2643 | status = -EIO; |
2644 | goto out; | |
2645 | } | |
533eb461 AA |
2646 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2647 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2648 | |
533eb461 | 2649 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2650 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2651 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2652 | out: | |
2653 | if (page) | |
2654 | __free_page(page); | |
5d7ca35a | 2655 | kfree(locations); |
6b97fd3d MN |
2656 | return status; |
2657 | } | |
2658 | ||
1da177e4 LT |
2659 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2660 | { | |
2661 | struct nfs4_getattr_arg args = { | |
2662 | .fh = fhandle, | |
2663 | .bitmask = server->attr_bitmask, | |
2664 | }; | |
2665 | struct nfs4_getattr_res res = { | |
2666 | .fattr = fattr, | |
2667 | .server = server, | |
2668 | }; | |
2669 | struct rpc_message msg = { | |
2670 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2671 | .rpc_argp = &args, | |
2672 | .rpc_resp = &res, | |
2673 | }; | |
2674 | ||
0e574af1 | 2675 | nfs_fattr_init(fattr); |
7c513058 | 2676 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2677 | } |
2678 | ||
2679 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2680 | { | |
2681 | struct nfs4_exception exception = { }; | |
2682 | int err; | |
2683 | do { | |
2684 | err = nfs4_handle_exception(server, | |
2685 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2686 | &exception); | |
2687 | } while (exception.retry); | |
2688 | return err; | |
2689 | } | |
2690 | ||
2691 | /* | |
2692 | * The file is not closed if it is opened due to the a request to change | |
2693 | * the size of the file. The open call will not be needed once the | |
2694 | * VFS layer lookup-intents are implemented. | |
2695 | * | |
2696 | * Close is called when the inode is destroyed. | |
2697 | * If we haven't opened the file for O_WRONLY, we | |
2698 | * need to in the size_change case to obtain a stateid. | |
2699 | * | |
2700 | * Got race? | |
2701 | * Because OPEN is always done by name in nfsv4, it is | |
2702 | * possible that we opened a different file by the same | |
2703 | * name. We can recognize this race condition, but we | |
2704 | * can't do anything about it besides returning an error. | |
2705 | * | |
2706 | * This will be fixed with VFS changes (lookup-intent). | |
2707 | */ | |
2708 | static int | |
2709 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2710 | struct iattr *sattr) | |
2711 | { | |
08e9eac4 | 2712 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2713 | struct rpc_cred *cred = NULL; |
d530838b | 2714 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2715 | int status; |
2716 | ||
8a1636c4 | 2717 | if (pnfs_ld_layoutret_on_setattr(inode)) |
24028672 | 2718 | pnfs_commit_and_return_layout(inode); |
8a1636c4 | 2719 | |
0e574af1 | 2720 | nfs_fattr_init(fattr); |
1da177e4 | 2721 | |
2669940d AA |
2722 | /* Deal with open(O_TRUNC) */ |
2723 | if (sattr->ia_valid & ATTR_OPEN) | |
2724 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME|ATTR_OPEN); | |
2725 | ||
2726 | /* Optimization: if the end result is no change, don't RPC */ | |
2727 | if ((sattr->ia_valid & ~(ATTR_FILE)) == 0) | |
2728 | return 0; | |
2729 | ||
d530838b | 2730 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2731 | if (sattr->ia_valid & ATTR_FILE) { |
2732 | struct nfs_open_context *ctx; | |
2733 | ||
2734 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2735 | if (ctx) { |
2736 | cred = ctx->cred; | |
2737 | state = ctx->state; | |
2738 | } | |
659bfcd6 | 2739 | } |
08e9eac4 | 2740 | |
659bfcd6 | 2741 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2742 | if (status == 0) |
2743 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2744 | return status; |
2745 | } | |
2746 | ||
0c2e53f1 TM |
2747 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
2748 | const struct qstr *name, struct nfs_fh *fhandle, | |
2749 | struct nfs_fattr *fattr) | |
2b3de441 | 2750 | { |
0c2e53f1 | 2751 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
2752 | int status; |
2753 | struct nfs4_lookup_arg args = { | |
2754 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 2755 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
2756 | .name = name, |
2757 | }; | |
2758 | struct nfs4_lookup_res res = { | |
2759 | .server = server, | |
2760 | .fattr = fattr, | |
2761 | .fh = fhandle, | |
2762 | }; | |
2763 | struct rpc_message msg = { | |
2764 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2765 | .rpc_argp = &args, | |
2766 | .rpc_resp = &res, | |
2767 | }; | |
2768 | ||
2769 | nfs_fattr_init(fattr); | |
2770 | ||
1da177e4 | 2771 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 2772 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2773 | dprintk("NFS reply lookup: %d\n", status); |
2774 | return status; | |
2775 | } | |
2776 | ||
72de53ec | 2777 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 2778 | { |
7ebb9315 | 2779 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 2780 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
2781 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
2782 | fattr->nlink = 2; | |
2783 | } | |
2784 | ||
72de53ec BS |
2785 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
2786 | struct qstr *name, struct nfs_fh *fhandle, | |
2787 | struct nfs_fattr *fattr) | |
1da177e4 LT |
2788 | { |
2789 | struct nfs4_exception exception = { }; | |
72de53ec | 2790 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
2791 | int err; |
2792 | do { | |
72de53ec BS |
2793 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr); |
2794 | switch (err) { | |
08ef7bd3 | 2795 | case -NFS4ERR_BADNAME: |
72de53ec BS |
2796 | err = -ENOENT; |
2797 | goto out; | |
0c2e53f1 | 2798 | case -NFS4ERR_MOVED: |
f05d147f | 2799 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
72de53ec | 2800 | goto out; |
0c2e53f1 | 2801 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
2802 | err = -EPERM; |
2803 | if (client != *clnt) | |
2804 | goto out; | |
2805 | ||
2806 | client = nfs4_create_sec_client(client, dir, name); | |
2807 | if (IS_ERR(client)) | |
2808 | return PTR_ERR(client); | |
2809 | ||
2810 | exception.retry = 1; | |
2811 | break; | |
2812 | default: | |
2813 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 2814 | } |
1da177e4 | 2815 | } while (exception.retry); |
72de53ec BS |
2816 | |
2817 | out: | |
2818 | if (err == 0) | |
2819 | *clnt = client; | |
2820 | else if (client != *clnt) | |
2821 | rpc_shutdown_client(client); | |
2822 | ||
1da177e4 LT |
2823 | return err; |
2824 | } | |
2825 | ||
80a16b21 | 2826 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, |
72de53ec BS |
2827 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2828 | { | |
2829 | int status; | |
2830 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
2831 | ||
2832 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2833 | if (client != NFS_CLIENT(dir)) { | |
2834 | rpc_shutdown_client(client); | |
2835 | nfs_fixup_secinfo_attributes(fattr); | |
2836 | } | |
2837 | return status; | |
2838 | } | |
2839 | ||
f05d147f BS |
2840 | struct rpc_clnt * |
2841 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, | |
2842 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2843 | { | |
2844 | int status; | |
2845 | struct rpc_clnt *client = rpc_clone_client(NFS_CLIENT(dir)); | |
2846 | ||
2847 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2848 | if (status < 0) { | |
2849 | rpc_shutdown_client(client); | |
2850 | return ERR_PTR(status); | |
2851 | } | |
2852 | return client; | |
2853 | } | |
2854 | ||
1da177e4 LT |
2855 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
2856 | { | |
76b32999 | 2857 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2858 | struct nfs4_accessargs args = { |
2859 | .fh = NFS_FH(inode), | |
a4980e78 | 2860 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
2861 | }; |
2862 | struct nfs4_accessres res = { | |
2863 | .server = server, | |
1da177e4 | 2864 | }; |
1da177e4 LT |
2865 | struct rpc_message msg = { |
2866 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2867 | .rpc_argp = &args, | |
2868 | .rpc_resp = &res, | |
2869 | .rpc_cred = entry->cred, | |
2870 | }; | |
2871 | int mode = entry->mask; | |
2872 | int status; | |
2873 | ||
2874 | /* | |
2875 | * Determine which access bits we want to ask for... | |
2876 | */ | |
2877 | if (mode & MAY_READ) | |
2878 | args.access |= NFS4_ACCESS_READ; | |
2879 | if (S_ISDIR(inode->i_mode)) { | |
2880 | if (mode & MAY_WRITE) | |
2881 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2882 | if (mode & MAY_EXEC) | |
2883 | args.access |= NFS4_ACCESS_LOOKUP; | |
2884 | } else { | |
2885 | if (mode & MAY_WRITE) | |
2886 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2887 | if (mode & MAY_EXEC) | |
2888 | args.access |= NFS4_ACCESS_EXECUTE; | |
2889 | } | |
c407d41a TM |
2890 | |
2891 | res.fattr = nfs_alloc_fattr(); | |
2892 | if (res.fattr == NULL) | |
2893 | return -ENOMEM; | |
2894 | ||
7c513058 | 2895 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 2896 | if (!status) { |
6168f62c | 2897 | nfs_access_set_mask(entry, res.access); |
c407d41a | 2898 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2899 | } |
c407d41a | 2900 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2901 | return status; |
2902 | } | |
2903 | ||
2904 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2905 | { | |
2906 | struct nfs4_exception exception = { }; | |
2907 | int err; | |
2908 | do { | |
2909 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2910 | _nfs4_proc_access(inode, entry), | |
2911 | &exception); | |
2912 | } while (exception.retry); | |
2913 | return err; | |
2914 | } | |
2915 | ||
2916 | /* | |
2917 | * TODO: For the time being, we don't try to get any attributes | |
2918 | * along with any of the zero-copy operations READ, READDIR, | |
2919 | * READLINK, WRITE. | |
2920 | * | |
2921 | * In the case of the first three, we want to put the GETATTR | |
2922 | * after the read-type operation -- this is because it is hard | |
2923 | * to predict the length of a GETATTR response in v4, and thus | |
2924 | * align the READ data correctly. This means that the GETATTR | |
2925 | * may end up partially falling into the page cache, and we should | |
2926 | * shift it into the 'tail' of the xdr_buf before processing. | |
2927 | * To do this efficiently, we need to know the total length | |
2928 | * of data received, which doesn't seem to be available outside | |
2929 | * of the RPC layer. | |
2930 | * | |
2931 | * In the case of WRITE, we also want to put the GETATTR after | |
2932 | * the operation -- in this case because we want to make sure | |
140150db | 2933 | * we get the post-operation mtime and size. |
1da177e4 LT |
2934 | * |
2935 | * Both of these changes to the XDR layer would in fact be quite | |
2936 | * minor, but I decided to leave them for a subsequent patch. | |
2937 | */ | |
2938 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2939 | unsigned int pgbase, unsigned int pglen) | |
2940 | { | |
2941 | struct nfs4_readlink args = { | |
2942 | .fh = NFS_FH(inode), | |
2943 | .pgbase = pgbase, | |
2944 | .pglen = pglen, | |
2945 | .pages = &page, | |
2946 | }; | |
f50c7000 | 2947 | struct nfs4_readlink_res res; |
1da177e4 LT |
2948 | struct rpc_message msg = { |
2949 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2950 | .rpc_argp = &args, | |
f50c7000 | 2951 | .rpc_resp = &res, |
1da177e4 LT |
2952 | }; |
2953 | ||
7c513058 | 2954 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2955 | } |
2956 | ||
2957 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2958 | unsigned int pgbase, unsigned int pglen) | |
2959 | { | |
2960 | struct nfs4_exception exception = { }; | |
2961 | int err; | |
2962 | do { | |
2963 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2964 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2965 | &exception); | |
2966 | } while (exception.retry); | |
2967 | return err; | |
2968 | } | |
2969 | ||
1da177e4 | 2970 | /* |
8867fe58 | 2971 | * This is just for mknod. open(O_CREAT) will always do ->open_context(). |
1da177e4 | 2972 | */ |
1da177e4 LT |
2973 | static int |
2974 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 2975 | int flags) |
1da177e4 | 2976 | { |
8867fe58 | 2977 | struct nfs_open_context *ctx; |
1da177e4 | 2978 | struct nfs4_state *state; |
1da177e4 LT |
2979 | int status = 0; |
2980 | ||
8867fe58 MS |
2981 | ctx = alloc_nfs_open_context(dentry, FMODE_READ); |
2982 | if (IS_ERR(ctx)) | |
2983 | return PTR_ERR(ctx); | |
2984 | ||
a8a5da99 | 2985 | sattr->ia_mode &= ~current_umask(); |
8626e4a4 TM |
2986 | state = nfs4_do_open(dir, dentry, ctx->mode, |
2987 | flags, sattr, ctx->cred, | |
2988 | &ctx->mdsthreshold); | |
d4d9cdcb | 2989 | d_drop(dentry); |
1da177e4 LT |
2990 | if (IS_ERR(state)) { |
2991 | status = PTR_ERR(state); | |
c0204fd2 | 2992 | goto out; |
1da177e4 | 2993 | } |
d4d9cdcb | 2994 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2995 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
8867fe58 | 2996 | ctx->state = state; |
1da177e4 | 2997 | out: |
8867fe58 | 2998 | put_nfs_open_context(ctx); |
1da177e4 LT |
2999 | return status; |
3000 | } | |
3001 | ||
3002 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3003 | { | |
16e42959 | 3004 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 3005 | struct nfs_removeargs args = { |
1da177e4 | 3006 | .fh = NFS_FH(dir), |
26fe5750 | 3007 | .name = *name, |
16e42959 | 3008 | }; |
4fdc17b2 | 3009 | struct nfs_removeres res = { |
16e42959 | 3010 | .server = server, |
1da177e4 | 3011 | }; |
1da177e4 | 3012 | struct rpc_message msg = { |
4fdc17b2 TM |
3013 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
3014 | .rpc_argp = &args, | |
3015 | .rpc_resp = &res, | |
1da177e4 | 3016 | }; |
778d2817 | 3017 | int status; |
1da177e4 | 3018 | |
7c513058 | 3019 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 3020 | if (status == 0) |
16e42959 | 3021 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
3022 | return status; |
3023 | } | |
3024 | ||
3025 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3026 | { | |
3027 | struct nfs4_exception exception = { }; | |
3028 | int err; | |
3029 | do { | |
3030 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3031 | _nfs4_proc_remove(dir, name), | |
3032 | &exception); | |
3033 | } while (exception.retry); | |
3034 | return err; | |
3035 | } | |
3036 | ||
e4eff1a6 | 3037 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 3038 | { |
e4eff1a6 TM |
3039 | struct nfs_server *server = NFS_SERVER(dir); |
3040 | struct nfs_removeargs *args = msg->rpc_argp; | |
3041 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 3042 | |
e4eff1a6 | 3043 | res->server = server; |
1da177e4 | 3044 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
9d12b216 | 3045 | nfs41_init_sequence(&args->seq_args, &res->seq_res, 1); |
1da177e4 LT |
3046 | } |
3047 | ||
34e137cc BS |
3048 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
3049 | { | |
d9afbd1b TM |
3050 | nfs4_setup_sequence(NFS_SERVER(data->dir), |
3051 | &data->args.seq_args, | |
3052 | &data->res.seq_res, | |
3053 | task); | |
1da177e4 LT |
3054 | } |
3055 | ||
e4eff1a6 | 3056 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 3057 | { |
e4eff1a6 TM |
3058 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
3059 | ||
14516c3a TM |
3060 | if (!nfs4_sequence_done(task, &res->seq_res)) |
3061 | return 0; | |
9e33bed5 | 3062 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
3063 | return 0; |
3064 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 3065 | return 1; |
1da177e4 LT |
3066 | } |
3067 | ||
d3d4152a JL |
3068 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
3069 | { | |
3070 | struct nfs_server *server = NFS_SERVER(dir); | |
3071 | struct nfs_renameargs *arg = msg->rpc_argp; | |
3072 | struct nfs_renameres *res = msg->rpc_resp; | |
3073 | ||
3074 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 3075 | res->server = server; |
9d12b216 | 3076 | nfs41_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
3077 | } |
3078 | ||
c6bfa1a1 BS |
3079 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
3080 | { | |
d9afbd1b TM |
3081 | nfs4_setup_sequence(NFS_SERVER(data->old_dir), |
3082 | &data->args.seq_args, | |
3083 | &data->res.seq_res, | |
3084 | task); | |
d3d4152a JL |
3085 | } |
3086 | ||
3087 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
3088 | struct inode *new_dir) | |
3089 | { | |
3090 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
3091 | ||
3092 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
3093 | return 0; | |
3094 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
3095 | return 0; | |
3096 | ||
3097 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 3098 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
3099 | return 1; |
3100 | } | |
3101 | ||
1da177e4 LT |
3102 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
3103 | struct inode *new_dir, struct qstr *new_name) | |
3104 | { | |
6caf2c82 | 3105 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 3106 | struct nfs_renameargs arg = { |
1da177e4 LT |
3107 | .old_dir = NFS_FH(old_dir), |
3108 | .new_dir = NFS_FH(new_dir), | |
3109 | .old_name = old_name, | |
3110 | .new_name = new_name, | |
6caf2c82 | 3111 | }; |
e8582a8b | 3112 | struct nfs_renameres res = { |
6caf2c82 | 3113 | .server = server, |
1da177e4 | 3114 | }; |
1da177e4 LT |
3115 | struct rpc_message msg = { |
3116 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
3117 | .rpc_argp = &arg, | |
3118 | .rpc_resp = &res, | |
3119 | }; | |
011fff72 | 3120 | int status = -ENOMEM; |
1da177e4 | 3121 | |
7c513058 | 3122 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
3123 | if (!status) { |
3124 | update_changeattr(old_dir, &res.old_cinfo); | |
3125 | update_changeattr(new_dir, &res.new_cinfo); | |
3126 | } | |
3127 | return status; | |
3128 | } | |
3129 | ||
3130 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
3131 | struct inode *new_dir, struct qstr *new_name) | |
3132 | { | |
3133 | struct nfs4_exception exception = { }; | |
3134 | int err; | |
3135 | do { | |
3136 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
3137 | _nfs4_proc_rename(old_dir, old_name, | |
3138 | new_dir, new_name), | |
3139 | &exception); | |
3140 | } while (exception.retry); | |
3141 | return err; | |
3142 | } | |
3143 | ||
3144 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3145 | { | |
91ba2eee | 3146 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3147 | struct nfs4_link_arg arg = { |
3148 | .fh = NFS_FH(inode), | |
3149 | .dir_fh = NFS_FH(dir), | |
3150 | .name = name, | |
91ba2eee TM |
3151 | .bitmask = server->attr_bitmask, |
3152 | }; | |
91ba2eee TM |
3153 | struct nfs4_link_res res = { |
3154 | .server = server, | |
1da177e4 | 3155 | }; |
1da177e4 LT |
3156 | struct rpc_message msg = { |
3157 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
3158 | .rpc_argp = &arg, | |
91ba2eee | 3159 | .rpc_resp = &res, |
1da177e4 | 3160 | }; |
136f2627 TM |
3161 | int status = -ENOMEM; |
3162 | ||
3163 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 3164 | if (res.fattr == NULL) |
136f2627 | 3165 | goto out; |
1da177e4 | 3166 | |
7c513058 | 3167 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
3168 | if (!status) { |
3169 | update_changeattr(dir, &res.cinfo); | |
73a3d07c | 3170 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 3171 | } |
136f2627 | 3172 | out: |
136f2627 | 3173 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3174 | return status; |
3175 | } | |
3176 | ||
3177 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3178 | { | |
3179 | struct nfs4_exception exception = { }; | |
3180 | int err; | |
3181 | do { | |
3182 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3183 | _nfs4_proc_link(inode, dir, name), | |
3184 | &exception); | |
3185 | } while (exception.retry); | |
3186 | return err; | |
3187 | } | |
3188 | ||
57dc9a57 TM |
3189 | struct nfs4_createdata { |
3190 | struct rpc_message msg; | |
3191 | struct nfs4_create_arg arg; | |
3192 | struct nfs4_create_res res; | |
3193 | struct nfs_fh fh; | |
3194 | struct nfs_fattr fattr; | |
57dc9a57 TM |
3195 | }; |
3196 | ||
3197 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
3198 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
3199 | { | |
3200 | struct nfs4_createdata *data; | |
3201 | ||
3202 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3203 | if (data != NULL) { | |
3204 | struct nfs_server *server = NFS_SERVER(dir); | |
3205 | ||
3206 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
3207 | data->msg.rpc_argp = &data->arg; | |
3208 | data->msg.rpc_resp = &data->res; | |
3209 | data->arg.dir_fh = NFS_FH(dir); | |
3210 | data->arg.server = server; | |
3211 | data->arg.name = name; | |
3212 | data->arg.attrs = sattr; | |
3213 | data->arg.ftype = ftype; | |
3214 | data->arg.bitmask = server->attr_bitmask; | |
3215 | data->res.server = server; | |
3216 | data->res.fh = &data->fh; | |
3217 | data->res.fattr = &data->fattr; | |
57dc9a57 | 3218 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
3219 | } |
3220 | return data; | |
3221 | } | |
3222 | ||
3223 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3224 | { | |
7c513058 | 3225 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3226 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3227 | if (status == 0) { |
3228 | update_changeattr(dir, &data->res.dir_cinfo); | |
57dc9a57 TM |
3229 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); |
3230 | } | |
3231 | return status; | |
3232 | } | |
3233 | ||
3234 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3235 | { | |
3236 | kfree(data); | |
3237 | } | |
3238 | ||
4f390c15 | 3239 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3240 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 3241 | { |
57dc9a57 TM |
3242 | struct nfs4_createdata *data; |
3243 | int status = -ENAMETOOLONG; | |
1da177e4 | 3244 | |
94a6d753 | 3245 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 3246 | goto out; |
4f390c15 | 3247 | |
57dc9a57 TM |
3248 | status = -ENOMEM; |
3249 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
3250 | if (data == NULL) | |
3251 | goto out; | |
3252 | ||
3253 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
3254 | data->arg.u.symlink.pages = &page; | |
3255 | data->arg.u.symlink.len = len; | |
1da177e4 | 3256 | |
57dc9a57 TM |
3257 | status = nfs4_do_create(dir, dentry, data); |
3258 | ||
3259 | nfs4_free_createdata(data); | |
3260 | out: | |
1da177e4 LT |
3261 | return status; |
3262 | } | |
3263 | ||
4f390c15 | 3264 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3265 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
3266 | { |
3267 | struct nfs4_exception exception = { }; | |
3268 | int err; | |
3269 | do { | |
3270 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
3271 | _nfs4_proc_symlink(dir, dentry, page, |
3272 | len, sattr), | |
1da177e4 LT |
3273 | &exception); |
3274 | } while (exception.retry); | |
3275 | return err; | |
3276 | } | |
3277 | ||
3278 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3279 | struct iattr *sattr) | |
3280 | { | |
57dc9a57 TM |
3281 | struct nfs4_createdata *data; |
3282 | int status = -ENOMEM; | |
1da177e4 | 3283 | |
57dc9a57 TM |
3284 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3285 | if (data == NULL) | |
3286 | goto out; | |
3287 | ||
3288 | status = nfs4_do_create(dir, dentry, data); | |
3289 | ||
3290 | nfs4_free_createdata(data); | |
3291 | out: | |
1da177e4 LT |
3292 | return status; |
3293 | } | |
3294 | ||
3295 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3296 | struct iattr *sattr) | |
3297 | { | |
3298 | struct nfs4_exception exception = { }; | |
3299 | int err; | |
a8a5da99 AK |
3300 | |
3301 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3302 | do { |
3303 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3304 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
3305 | &exception); | |
3306 | } while (exception.retry); | |
3307 | return err; | |
3308 | } | |
3309 | ||
3310 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3311 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3312 | { |
3313 | struct inode *dir = dentry->d_inode; | |
3314 | struct nfs4_readdir_arg args = { | |
3315 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3316 | .pages = pages, |
1da177e4 LT |
3317 | .pgbase = 0, |
3318 | .count = count, | |
96d25e53 | 3319 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3320 | .plus = plus, |
1da177e4 LT |
3321 | }; |
3322 | struct nfs4_readdir_res res; | |
3323 | struct rpc_message msg = { | |
3324 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3325 | .rpc_argp = &args, | |
3326 | .rpc_resp = &res, | |
3327 | .rpc_cred = cred, | |
3328 | }; | |
3329 | int status; | |
3330 | ||
3110ff80 | 3331 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
3332 | dentry->d_parent->d_name.name, |
3333 | dentry->d_name.name, | |
3334 | (unsigned long long)cookie); | |
c3f52af3 | 3335 | nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args); |
1da177e4 | 3336 | res.pgbase = args.pgbase; |
7c513058 | 3337 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3338 | if (status >= 0) { |
c3f52af3 | 3339 | memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3340 | status += args.pgbase; |
3341 | } | |
c4812998 TM |
3342 | |
3343 | nfs_invalidate_atime(dir); | |
3344 | ||
3110ff80 | 3345 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3346 | return status; |
3347 | } | |
3348 | ||
3349 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3350 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3351 | { |
3352 | struct nfs4_exception exception = { }; | |
3353 | int err; | |
3354 | do { | |
3355 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
3356 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 3357 | pages, count, plus), |
1da177e4 LT |
3358 | &exception); |
3359 | } while (exception.retry); | |
3360 | return err; | |
3361 | } | |
3362 | ||
3363 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3364 | struct iattr *sattr, dev_t rdev) | |
3365 | { | |
57dc9a57 TM |
3366 | struct nfs4_createdata *data; |
3367 | int mode = sattr->ia_mode; | |
3368 | int status = -ENOMEM; | |
1da177e4 | 3369 | |
57dc9a57 TM |
3370 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); |
3371 | if (data == NULL) | |
3372 | goto out; | |
3373 | ||
1da177e4 | 3374 | if (S_ISFIFO(mode)) |
57dc9a57 | 3375 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3376 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3377 | data->arg.ftype = NF4BLK; |
3378 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3379 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3380 | } |
3381 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3382 | data->arg.ftype = NF4CHR; |
3383 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3384 | data->arg.u.device.specdata2 = MINOR(rdev); | |
4ea8fed5 TM |
3385 | } else if (!S_ISSOCK(mode)) { |
3386 | status = -EINVAL; | |
3387 | goto out_free; | |
1da177e4 | 3388 | } |
1da177e4 | 3389 | |
57dc9a57 | 3390 | status = nfs4_do_create(dir, dentry, data); |
4ea8fed5 | 3391 | out_free: |
57dc9a57 TM |
3392 | nfs4_free_createdata(data); |
3393 | out: | |
1da177e4 LT |
3394 | return status; |
3395 | } | |
3396 | ||
3397 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3398 | struct iattr *sattr, dev_t rdev) | |
3399 | { | |
3400 | struct nfs4_exception exception = { }; | |
3401 | int err; | |
a8a5da99 AK |
3402 | |
3403 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3404 | do { |
3405 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3406 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
3407 | &exception); | |
3408 | } while (exception.retry); | |
3409 | return err; | |
3410 | } | |
3411 | ||
3412 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3413 | struct nfs_fsstat *fsstat) | |
3414 | { | |
3415 | struct nfs4_statfs_arg args = { | |
3416 | .fh = fhandle, | |
3417 | .bitmask = server->attr_bitmask, | |
3418 | }; | |
24ad148a BH |
3419 | struct nfs4_statfs_res res = { |
3420 | .fsstat = fsstat, | |
3421 | }; | |
1da177e4 LT |
3422 | struct rpc_message msg = { |
3423 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3424 | .rpc_argp = &args, | |
24ad148a | 3425 | .rpc_resp = &res, |
1da177e4 LT |
3426 | }; |
3427 | ||
0e574af1 | 3428 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3429 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3430 | } |
3431 | ||
3432 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3433 | { | |
3434 | struct nfs4_exception exception = { }; | |
3435 | int err; | |
3436 | do { | |
3437 | err = nfs4_handle_exception(server, | |
3438 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3439 | &exception); | |
3440 | } while (exception.retry); | |
3441 | return err; | |
3442 | } | |
3443 | ||
3444 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3445 | struct nfs_fsinfo *fsinfo) | |
3446 | { | |
3447 | struct nfs4_fsinfo_arg args = { | |
3448 | .fh = fhandle, | |
3449 | .bitmask = server->attr_bitmask, | |
3450 | }; | |
3dda5e43 BH |
3451 | struct nfs4_fsinfo_res res = { |
3452 | .fsinfo = fsinfo, | |
3453 | }; | |
1da177e4 LT |
3454 | struct rpc_message msg = { |
3455 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3456 | .rpc_argp = &args, | |
3dda5e43 | 3457 | .rpc_resp = &res, |
1da177e4 LT |
3458 | }; |
3459 | ||
7c513058 | 3460 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3461 | } |
3462 | ||
3463 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3464 | { | |
3465 | struct nfs4_exception exception = { }; | |
83ca7f5a | 3466 | unsigned long now = jiffies; |
1da177e4 LT |
3467 | int err; |
3468 | ||
3469 | do { | |
83ca7f5a CL |
3470 | err = _nfs4_do_fsinfo(server, fhandle, fsinfo); |
3471 | if (err == 0) { | |
3472 | struct nfs_client *clp = server->nfs_client; | |
3473 | ||
3474 | spin_lock(&clp->cl_lock); | |
3475 | clp->cl_lease_time = fsinfo->lease_time * HZ; | |
3476 | clp->cl_last_renewal = now; | |
3477 | spin_unlock(&clp->cl_lock); | |
3478 | break; | |
3479 | } | |
3480 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
3481 | } while (exception.retry); |
3482 | return err; | |
3483 | } | |
3484 | ||
3485 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3486 | { | |
e38eb650 BS |
3487 | int error; |
3488 | ||
0e574af1 | 3489 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 | 3490 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
dc182549 PT |
3491 | if (error == 0) { |
3492 | /* block layout checks this! */ | |
3493 | server->pnfs_blksize = fsinfo->blksize; | |
e38eb650 | 3494 | set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype); |
dc182549 | 3495 | } |
e38eb650 BS |
3496 | |
3497 | return error; | |
1da177e4 LT |
3498 | } |
3499 | ||
3500 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3501 | struct nfs_pathconf *pathconf) | |
3502 | { | |
3503 | struct nfs4_pathconf_arg args = { | |
3504 | .fh = fhandle, | |
3505 | .bitmask = server->attr_bitmask, | |
3506 | }; | |
d45b2989 BH |
3507 | struct nfs4_pathconf_res res = { |
3508 | .pathconf = pathconf, | |
3509 | }; | |
1da177e4 LT |
3510 | struct rpc_message msg = { |
3511 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3512 | .rpc_argp = &args, | |
d45b2989 | 3513 | .rpc_resp = &res, |
1da177e4 LT |
3514 | }; |
3515 | ||
3516 | /* None of the pathconf attributes are mandatory to implement */ | |
3517 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3518 | memset(pathconf, 0, sizeof(*pathconf)); | |
3519 | return 0; | |
3520 | } | |
3521 | ||
0e574af1 | 3522 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3523 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3524 | } |
3525 | ||
3526 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3527 | struct nfs_pathconf *pathconf) | |
3528 | { | |
3529 | struct nfs4_exception exception = { }; | |
3530 | int err; | |
3531 | ||
3532 | do { | |
3533 | err = nfs4_handle_exception(server, | |
3534 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3535 | &exception); | |
3536 | } while (exception.retry); | |
3537 | return err; | |
3538 | } | |
3539 | ||
5521abfd | 3540 | int nfs4_set_rw_stateid(nfs4_stateid *stateid, |
9b206149 TM |
3541 | const struct nfs_open_context *ctx, |
3542 | const struct nfs_lock_context *l_ctx, | |
3543 | fmode_t fmode) | |
3544 | { | |
3545 | const struct nfs_lockowner *lockowner = NULL; | |
3546 | ||
3547 | if (l_ctx != NULL) | |
3548 | lockowner = &l_ctx->lockowner; | |
5521abfd | 3549 | return nfs4_select_rw_stateid(stateid, ctx->state, fmode, lockowner); |
9b206149 TM |
3550 | } |
3551 | EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid); | |
3552 | ||
5521abfd TM |
3553 | static bool nfs4_stateid_is_current(nfs4_stateid *stateid, |
3554 | const struct nfs_open_context *ctx, | |
3555 | const struct nfs_lock_context *l_ctx, | |
3556 | fmode_t fmode) | |
3557 | { | |
3558 | nfs4_stateid current_stateid; | |
3559 | ||
3560 | if (nfs4_set_rw_stateid(¤t_stateid, ctx, l_ctx, fmode)) | |
3561 | return false; | |
3562 | return nfs4_stateid_match(stateid, ¤t_stateid); | |
3563 | } | |
3564 | ||
3565 | static bool nfs4_error_stateid_expired(int err) | |
3566 | { | |
3567 | switch (err) { | |
3568 | case -NFS4ERR_DELEG_REVOKED: | |
3569 | case -NFS4ERR_ADMIN_REVOKED: | |
3570 | case -NFS4ERR_BAD_STATEID: | |
3571 | case -NFS4ERR_STALE_STATEID: | |
3572 | case -NFS4ERR_OLD_STATEID: | |
3573 | case -NFS4ERR_OPENMODE: | |
3574 | case -NFS4ERR_EXPIRED: | |
3575 | return true; | |
3576 | } | |
3577 | return false; | |
3578 | } | |
3579 | ||
d20581aa BH |
3580 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3581 | { | |
cd841605 | 3582 | nfs_invalidate_atime(data->header->inode); |
d20581aa BH |
3583 | } |
3584 | ||
cbdabc7f | 3585 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3586 | { |
cd841605 | 3587 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
1da177e4 | 3588 | |
9e33bed5 | 3589 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3590 | rpc_restart_call_prepare(task); |
ec06c096 | 3591 | return -EAGAIN; |
1da177e4 | 3592 | } |
8850df99 | 3593 | |
d20581aa | 3594 | __nfs4_read_done_cb(data); |
1da177e4 | 3595 | if (task->tk_status > 0) |
ec06c096 TM |
3596 | renew_lease(server, data->timestamp); |
3597 | return 0; | |
1da177e4 LT |
3598 | } |
3599 | ||
5521abfd TM |
3600 | static bool nfs4_read_stateid_changed(struct rpc_task *task, |
3601 | struct nfs_readargs *args) | |
3602 | { | |
3603 | ||
3604 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
3605 | nfs4_stateid_is_current(&args->stateid, | |
3606 | args->context, | |
3607 | args->lock_context, | |
3608 | FMODE_READ)) | |
3609 | return false; | |
3610 | rpc_restart_call_prepare(task); | |
3611 | return true; | |
3612 | } | |
3613 | ||
cbdabc7f AA |
3614 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3615 | { | |
3616 | ||
3617 | dprintk("--> %s\n", __func__); | |
3618 | ||
3619 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3620 | return -EAGAIN; | |
5521abfd TM |
3621 | if (nfs4_read_stateid_changed(task, &data->args)) |
3622 | return -EAGAIN; | |
d20581aa BH |
3623 | return data->read_done_cb ? data->read_done_cb(task, data) : |
3624 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
3625 | } |
3626 | ||
bdc7f021 | 3627 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3628 | { |
1da177e4 | 3629 | data->timestamp = jiffies; |
cbdabc7f | 3630 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3631 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
9d12b216 | 3632 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
1da177e4 LT |
3633 | } |
3634 | ||
ea7c3303 BS |
3635 | static void nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) |
3636 | { | |
9b206149 | 3637 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
d9afbd1b TM |
3638 | &data->args.seq_args, |
3639 | &data->res.seq_res, | |
9b206149 TM |
3640 | task)) |
3641 | return; | |
3642 | nfs4_set_rw_stateid(&data->args.stateid, data->args.context, | |
3643 | data->args.lock_context, FMODE_READ); | |
1da177e4 LT |
3644 | } |
3645 | ||
b029bc9b | 3646 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3647 | { |
cd841605 | 3648 | struct inode *inode = data->header->inode; |
1da177e4 | 3649 | |
9e33bed5 | 3650 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3651 | rpc_restart_call_prepare(task); |
788e7a89 | 3652 | return -EAGAIN; |
1da177e4 | 3653 | } |
4f9838c7 | 3654 | if (task->tk_status >= 0) { |
1da177e4 | 3655 | renew_lease(NFS_SERVER(inode), data->timestamp); |
5a37f851 | 3656 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); |
4f9838c7 | 3657 | } |
788e7a89 | 3658 | return 0; |
1da177e4 LT |
3659 | } |
3660 | ||
5521abfd TM |
3661 | static bool nfs4_write_stateid_changed(struct rpc_task *task, |
3662 | struct nfs_writeargs *args) | |
3663 | { | |
3664 | ||
3665 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
3666 | nfs4_stateid_is_current(&args->stateid, | |
3667 | args->context, | |
3668 | args->lock_context, | |
3669 | FMODE_WRITE)) | |
3670 | return false; | |
3671 | rpc_restart_call_prepare(task); | |
3672 | return true; | |
3673 | } | |
3674 | ||
b029bc9b FI |
3675 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3676 | { | |
3677 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3678 | return -EAGAIN; | |
5521abfd TM |
3679 | if (nfs4_write_stateid_changed(task, &data->args)) |
3680 | return -EAGAIN; | |
d20581aa BH |
3681 | return data->write_done_cb ? data->write_done_cb(task, data) : |
3682 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
3683 | } |
3684 | ||
5a37f851 TM |
3685 | static |
3686 | bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data *data) | |
a69aef14 | 3687 | { |
5a37f851 TM |
3688 | const struct nfs_pgio_header *hdr = data->header; |
3689 | ||
3690 | /* Don't request attributes for pNFS or O_DIRECT writes */ | |
3691 | if (data->ds_clp != NULL || hdr->dreq != NULL) | |
3692 | return false; | |
3693 | /* Otherwise, request attributes if and only if we don't hold | |
3694 | * a delegation | |
3695 | */ | |
011e2a7f | 3696 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 3697 | } |
a69aef14 | 3698 | |
bdc7f021 | 3699 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3700 | { |
cd841605 | 3701 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
bdc7f021 | 3702 | |
5a37f851 | 3703 | if (!nfs4_write_need_cache_consistency_data(data)) { |
7ffd1064 FI |
3704 | data->args.bitmask = NULL; |
3705 | data->res.fattr = NULL; | |
3706 | } else | |
3707 | data->args.bitmask = server->cache_consistency_bitmask; | |
5a37f851 | 3708 | |
b029bc9b FI |
3709 | if (!data->write_done_cb) |
3710 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3711 | data->res.server = server; |
1da177e4 LT |
3712 | data->timestamp = jiffies; |
3713 | ||
bdc7f021 | 3714 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
9d12b216 | 3715 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3716 | } |
3717 | ||
c6cb80d0 BS |
3718 | static void nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) |
3719 | { | |
9b206149 | 3720 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
d9afbd1b TM |
3721 | &data->args.seq_args, |
3722 | &data->res.seq_res, | |
9b206149 TM |
3723 | task)) |
3724 | return; | |
3725 | nfs4_set_rw_stateid(&data->args.stateid, data->args.context, | |
3726 | data->args.lock_context, FMODE_WRITE); | |
1da177e4 LT |
3727 | } |
3728 | ||
0b7c0153 | 3729 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 | 3730 | { |
d9afbd1b TM |
3731 | nfs4_setup_sequence(NFS_SERVER(data->inode), |
3732 | &data->args.seq_args, | |
3733 | &data->res.seq_res, | |
3734 | task); | |
1da177e4 LT |
3735 | } |
3736 | ||
0b7c0153 | 3737 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 3738 | { |
1da177e4 | 3739 | struct inode *inode = data->inode; |
14516c3a | 3740 | |
9e33bed5 | 3741 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
d00c5d43 | 3742 | rpc_restart_call_prepare(task); |
788e7a89 | 3743 | return -EAGAIN; |
1da177e4 | 3744 | } |
788e7a89 | 3745 | return 0; |
1da177e4 LT |
3746 | } |
3747 | ||
0b7c0153 | 3748 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
3749 | { |
3750 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3751 | return -EAGAIN; | |
0b7c0153 | 3752 | return data->commit_done_cb(task, data); |
5f452431 FI |
3753 | } |
3754 | ||
0b7c0153 | 3755 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 3756 | { |
788e7a89 | 3757 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 3758 | |
0b7c0153 FI |
3759 | if (data->commit_done_cb == NULL) |
3760 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 3761 | data->res.server = server; |
bdc7f021 | 3762 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
9d12b216 | 3763 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3764 | } |
3765 | ||
9bc4e3ca CL |
3766 | struct nfs4_renewdata { |
3767 | struct nfs_client *client; | |
3768 | unsigned long timestamp; | |
3769 | }; | |
3770 | ||
1da177e4 LT |
3771 | /* |
3772 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3773 | * standalone procedure for queueing an asynchronous RENEW. | |
3774 | */ | |
9bc4e3ca | 3775 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3776 | { |
9bc4e3ca CL |
3777 | struct nfs4_renewdata *data = calldata; |
3778 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3779 | |
0851de06 AB |
3780 | if (atomic_read(&clp->cl_count) > 1) |
3781 | nfs4_schedule_state_renewal(clp); | |
3782 | nfs_put_client(clp); | |
9bc4e3ca | 3783 | kfree(data); |
dc96aef9 AB |
3784 | } |
3785 | ||
9bc4e3ca | 3786 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3787 | { |
9bc4e3ca CL |
3788 | struct nfs4_renewdata *data = calldata; |
3789 | struct nfs_client *clp = data->client; | |
3790 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3791 | |
3792 | if (task->tk_status < 0) { | |
95baa25c | 3793 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
3794 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
3795 | return; | |
3796 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 3797 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
3798 | return; |
3799 | } | |
3800 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 3801 | } |
452e9352 | 3802 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3803 | } |
3804 | ||
963d8fe5 TM |
3805 | static const struct rpc_call_ops nfs4_renew_ops = { |
3806 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3807 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3808 | }; |
3809 | ||
2f60ea6b | 3810 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
3811 | { |
3812 | struct rpc_message msg = { | |
3813 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3814 | .rpc_argp = clp, | |
b4454fe1 | 3815 | .rpc_cred = cred, |
1da177e4 | 3816 | }; |
9bc4e3ca | 3817 | struct nfs4_renewdata *data; |
1da177e4 | 3818 | |
2f60ea6b TM |
3819 | if (renew_flags == 0) |
3820 | return 0; | |
0851de06 AB |
3821 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3822 | return -EIO; | |
b569ad34 | 3823 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
3824 | if (data == NULL) |
3825 | return -ENOMEM; | |
3826 | data->client = clp; | |
3827 | data->timestamp = jiffies; | |
1da177e4 | 3828 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, |
9bc4e3ca | 3829 | &nfs4_renew_ops, data); |
1da177e4 LT |
3830 | } |
3831 | ||
8534d4ec | 3832 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3833 | { |
3834 | struct rpc_message msg = { | |
3835 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3836 | .rpc_argp = clp, | |
b4454fe1 | 3837 | .rpc_cred = cred, |
1da177e4 LT |
3838 | }; |
3839 | unsigned long now = jiffies; | |
3840 | int status; | |
3841 | ||
3842 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3843 | if (status < 0) | |
3844 | return status; | |
452e9352 | 3845 | do_renew_lease(clp, now); |
1da177e4 LT |
3846 | return 0; |
3847 | } | |
3848 | ||
aa1870af BF |
3849 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3850 | { | |
3851 | return (server->caps & NFS_CAP_ACLS) | |
3852 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3853 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3854 | } | |
3855 | ||
21f498c2 TM |
3856 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that |
3857 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on | |
aa1870af BF |
3858 | * the stack. |
3859 | */ | |
21f498c2 | 3860 | #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) |
aa1870af | 3861 | |
e9e3d724 NH |
3862 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
3863 | struct page **pages, unsigned int *pgbase) | |
3864 | { | |
3865 | struct page *newpage, **spages; | |
3866 | int rc = 0; | |
3867 | size_t len; | |
3868 | spages = pages; | |
3869 | ||
3870 | do { | |
21f498c2 | 3871 | len = min_t(size_t, PAGE_SIZE, buflen); |
e9e3d724 NH |
3872 | newpage = alloc_page(GFP_KERNEL); |
3873 | ||
3874 | if (newpage == NULL) | |
3875 | goto unwind; | |
3876 | memcpy(page_address(newpage), buf, len); | |
3877 | buf += len; | |
3878 | buflen -= len; | |
3879 | *pages++ = newpage; | |
3880 | rc++; | |
3881 | } while (buflen != 0); | |
3882 | ||
3883 | return rc; | |
3884 | ||
3885 | unwind: | |
3886 | for(; rc > 0; rc--) | |
3887 | __free_page(spages[rc-1]); | |
3888 | return -ENOMEM; | |
3889 | } | |
3890 | ||
e50a1c2e BF |
3891 | struct nfs4_cached_acl { |
3892 | int cached; | |
3893 | size_t len; | |
3e9d4154 | 3894 | char data[0]; |
e50a1c2e BF |
3895 | }; |
3896 | ||
3897 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3898 | { | |
3899 | struct nfs_inode *nfsi = NFS_I(inode); | |
3900 | ||
3901 | spin_lock(&inode->i_lock); | |
3902 | kfree(nfsi->nfs4_acl); | |
3903 | nfsi->nfs4_acl = acl; | |
3904 | spin_unlock(&inode->i_lock); | |
3905 | } | |
3906 | ||
3907 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3908 | { | |
3909 | nfs4_set_cached_acl(inode, NULL); | |
3910 | } | |
3911 | ||
3912 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3913 | { | |
3914 | struct nfs_inode *nfsi = NFS_I(inode); | |
3915 | struct nfs4_cached_acl *acl; | |
3916 | int ret = -ENOENT; | |
3917 | ||
3918 | spin_lock(&inode->i_lock); | |
3919 | acl = nfsi->nfs4_acl; | |
3920 | if (acl == NULL) | |
3921 | goto out; | |
3922 | if (buf == NULL) /* user is just asking for length */ | |
3923 | goto out_len; | |
3924 | if (acl->cached == 0) | |
3925 | goto out; | |
3926 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3927 | if (acl->len > buflen) | |
3928 | goto out; | |
3929 | memcpy(buf, acl->data, acl->len); | |
3930 | out_len: | |
3931 | ret = acl->len; | |
3932 | out: | |
3933 | spin_unlock(&inode->i_lock); | |
3934 | return ret; | |
3935 | } | |
3936 | ||
5794d21e | 3937 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
3938 | { |
3939 | struct nfs4_cached_acl *acl; | |
b291f1b1 | 3940 | size_t buflen = sizeof(*acl) + acl_len; |
e50a1c2e | 3941 | |
1f1ea6c2 | 3942 | if (buflen <= PAGE_SIZE) { |
b291f1b1 | 3943 | acl = kmalloc(buflen, GFP_KERNEL); |
e50a1c2e BF |
3944 | if (acl == NULL) |
3945 | goto out; | |
3946 | acl->cached = 1; | |
5794d21e | 3947 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
3948 | } else { |
3949 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3950 | if (acl == NULL) | |
3951 | goto out; | |
3952 | acl->cached = 0; | |
3953 | } | |
3954 | acl->len = acl_len; | |
3955 | out: | |
3956 | nfs4_set_cached_acl(inode, acl); | |
3957 | } | |
3958 | ||
bf118a34 AA |
3959 | /* |
3960 | * The getxattr API returns the required buffer length when called with a | |
3961 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
3962 | * the required buf. On a NULL buf, we send a page of data to the server | |
3963 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
3964 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
3965 | * the cache. If not so, we throw away the page, and cache the required | |
3966 | * length. The next getxattr call will then produce another round trip to | |
3967 | * the server, this time with the input buf of the required size. | |
3968 | */ | |
16b4289c | 3969 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3970 | { |
bf118a34 | 3971 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
3972 | struct nfs_getaclargs args = { |
3973 | .fh = NFS_FH(inode), | |
3974 | .acl_pages = pages, | |
3975 | .acl_len = buflen, | |
3976 | }; | |
663c79b3 BH |
3977 | struct nfs_getaclres res = { |
3978 | .acl_len = buflen, | |
3979 | }; | |
aa1870af BF |
3980 | struct rpc_message msg = { |
3981 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3982 | .rpc_argp = &args, | |
663c79b3 | 3983 | .rpc_resp = &res, |
aa1870af | 3984 | }; |
21f498c2 TM |
3985 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
3986 | int ret = -ENOMEM, i; | |
aa1870af | 3987 | |
bf118a34 AA |
3988 | /* As long as we're doing a round trip to the server anyway, |
3989 | * let's be prepared for a page of acl data. */ | |
3990 | if (npages == 0) | |
3991 | npages = 1; | |
21f498c2 TM |
3992 | if (npages > ARRAY_SIZE(pages)) |
3993 | return -ERANGE; | |
5a006899 | 3994 | |
bf118a34 AA |
3995 | for (i = 0; i < npages; i++) { |
3996 | pages[i] = alloc_page(GFP_KERNEL); | |
3997 | if (!pages[i]) | |
3998 | goto out_free; | |
e50a1c2e | 3999 | } |
5a006899 SP |
4000 | |
4001 | /* for decoding across pages */ | |
4002 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
4003 | if (!res.acl_scratch) | |
4004 | goto out_free; | |
4005 | ||
bf118a34 AA |
4006 | args.acl_len = npages * PAGE_SIZE; |
4007 | args.acl_pgbase = 0; | |
5a006899 | 4008 | |
de040bec | 4009 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
4010 | __func__, buf, buflen, npages, args.acl_len); |
4011 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
4012 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
4013 | if (ret) |
4014 | goto out_free; | |
bf118a34 | 4015 | |
1f1ea6c2 TM |
4016 | /* Handle the case where the passed-in buffer is too short */ |
4017 | if (res.acl_flags & NFS4_ACL_TRUNC) { | |
4018 | /* Did the user only issue a request for the acl length? */ | |
4019 | if (buf == NULL) | |
4020 | goto out_ok; | |
e50a1c2e | 4021 | ret = -ERANGE; |
1f1ea6c2 | 4022 | goto out_free; |
e50a1c2e | 4023 | } |
1f1ea6c2 | 4024 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 SW |
4025 | if (buf) { |
4026 | if (res.acl_len > buflen) { | |
4027 | ret = -ERANGE; | |
4028 | goto out_free; | |
4029 | } | |
1f1ea6c2 | 4030 | _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 | 4031 | } |
1f1ea6c2 TM |
4032 | out_ok: |
4033 | ret = res.acl_len; | |
e50a1c2e | 4034 | out_free: |
bf118a34 AA |
4035 | for (i = 0; i < npages; i++) |
4036 | if (pages[i]) | |
4037 | __free_page(pages[i]); | |
331818f1 TM |
4038 | if (res.acl_scratch) |
4039 | __free_page(res.acl_scratch); | |
aa1870af BF |
4040 | return ret; |
4041 | } | |
4042 | ||
16b4289c TM |
4043 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
4044 | { | |
4045 | struct nfs4_exception exception = { }; | |
4046 | ssize_t ret; | |
4047 | do { | |
4048 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
4049 | if (ret >= 0) | |
4050 | break; | |
4051 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
4052 | } while (exception.retry); | |
4053 | return ret; | |
4054 | } | |
4055 | ||
e50a1c2e BF |
4056 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
4057 | { | |
4058 | struct nfs_server *server = NFS_SERVER(inode); | |
4059 | int ret; | |
4060 | ||
4061 | if (!nfs4_server_supports_acls(server)) | |
4062 | return -EOPNOTSUPP; | |
4063 | ret = nfs_revalidate_inode(server, inode); | |
4064 | if (ret < 0) | |
4065 | return ret; | |
08a22b39 AK |
4066 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
4067 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
4068 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
4069 | if (ret != -ENOENT) | |
bf118a34 AA |
4070 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
4071 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
4072 | return ret; |
4073 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
4074 | } | |
4075 | ||
16b4289c | 4076 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
4077 | { |
4078 | struct nfs_server *server = NFS_SERVER(inode); | |
4079 | struct page *pages[NFS4ACL_MAXPAGES]; | |
4080 | struct nfs_setaclargs arg = { | |
4081 | .fh = NFS_FH(inode), | |
4082 | .acl_pages = pages, | |
4083 | .acl_len = buflen, | |
4084 | }; | |
73c403a9 | 4085 | struct nfs_setaclres res; |
4b580ee3 BF |
4086 | struct rpc_message msg = { |
4087 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
4088 | .rpc_argp = &arg, | |
73c403a9 | 4089 | .rpc_resp = &res, |
4b580ee3 | 4090 | }; |
21f498c2 | 4091 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
e9e3d724 | 4092 | int ret, i; |
4b580ee3 BF |
4093 | |
4094 | if (!nfs4_server_supports_acls(server)) | |
4095 | return -EOPNOTSUPP; | |
21f498c2 TM |
4096 | if (npages > ARRAY_SIZE(pages)) |
4097 | return -ERANGE; | |
e9e3d724 NH |
4098 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
4099 | if (i < 0) | |
4100 | return i; | |
57ec14c5 | 4101 | nfs4_inode_return_delegation(inode); |
7c513058 | 4102 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
4103 | |
4104 | /* | |
4105 | * Free each page after tx, so the only ref left is | |
4106 | * held by the network stack | |
4107 | */ | |
4108 | for (; i > 0; i--) | |
4109 | put_page(pages[i-1]); | |
4110 | ||
08a22b39 AK |
4111 | /* |
4112 | * Acl update can result in inode attribute update. | |
4113 | * so mark the attribute cache invalid. | |
4114 | */ | |
4115 | spin_lock(&inode->i_lock); | |
4116 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
4117 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
4118 | nfs_access_zap_cache(inode); |
4119 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
4120 | return ret; |
4121 | } | |
4122 | ||
16b4289c TM |
4123 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4124 | { | |
4125 | struct nfs4_exception exception = { }; | |
4126 | int err; | |
4127 | do { | |
4128 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
4129 | __nfs4_proc_set_acl(inode, buf, buflen), | |
4130 | &exception); | |
4131 | } while (exception.retry); | |
4132 | return err; | |
4133 | } | |
4134 | ||
1da177e4 | 4135 | static int |
aa5190d0 | 4136 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 4137 | { |
aa5190d0 TM |
4138 | struct nfs_client *clp = server->nfs_client; |
4139 | ||
4140 | if (task->tk_status >= 0) | |
1da177e4 LT |
4141 | return 0; |
4142 | switch(task->tk_status) { | |
a1d0b5ee | 4143 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
4144 | case -NFS4ERR_ADMIN_REVOKED: |
4145 | case -NFS4ERR_BAD_STATEID: | |
14977489 TM |
4146 | if (state == NULL) |
4147 | break; | |
4148 | nfs_remove_bad_delegation(state->inode); | |
9e33bed5 TM |
4149 | case -NFS4ERR_OPENMODE: |
4150 | if (state == NULL) | |
4151 | break; | |
5d422301 TM |
4152 | if (nfs4_schedule_stateid_recovery(server, state) < 0) |
4153 | goto stateid_invalid; | |
0400a6b0 | 4154 | goto wait_on_recovery; |
0ced63d1 | 4155 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
4156 | if (state != NULL) { |
4157 | if (nfs4_schedule_stateid_recovery(server, state) < 0) | |
4158 | goto stateid_invalid; | |
4159 | } | |
1da177e4 | 4160 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 4161 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
4162 | nfs4_schedule_lease_recovery(clp); |
4163 | goto wait_on_recovery; | |
4745e315 AA |
4164 | #if defined(CONFIG_NFS_V4_1) |
4165 | case -NFS4ERR_BADSESSION: | |
4166 | case -NFS4ERR_BADSLOT: | |
4167 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4168 | case -NFS4ERR_DEADSESSION: | |
4169 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4170 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
4171 | case -NFS4ERR_SEQ_MISORDERED: | |
4172 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
4173 | task->tk_status); | |
9f594791 | 4174 | nfs4_schedule_session_recovery(clp->cl_session, task->tk_status); |
4745e315 AA |
4175 | task->tk_status = 0; |
4176 | return -EAGAIN; | |
4177 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 4178 | case -NFS4ERR_DELAY: |
aa5190d0 | 4179 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 4180 | case -NFS4ERR_GRACE: |
1da177e4 LT |
4181 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
4182 | task->tk_status = 0; | |
4183 | return -EAGAIN; | |
a8a4ae3a | 4184 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
4185 | case -NFS4ERR_OLD_STATEID: |
4186 | task->tk_status = 0; | |
4187 | return -EAGAIN; | |
4188 | } | |
4189 | task->tk_status = nfs4_map_errors(task->tk_status); | |
4190 | return 0; | |
5d422301 TM |
4191 | stateid_invalid: |
4192 | task->tk_status = -EIO; | |
4193 | return 0; | |
0400a6b0 | 4194 | wait_on_recovery: |
a2c0b9e2 | 4195 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
4196 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
4197 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
4198 | task->tk_status = 0; | |
4199 | return -EAGAIN; | |
1da177e4 LT |
4200 | } |
4201 | ||
f092075d CL |
4202 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
4203 | nfs4_verifier *bootverf) | |
cd93710e CL |
4204 | { |
4205 | __be32 verf[2]; | |
4206 | ||
2c820d9a CL |
4207 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
4208 | /* An impossible timestamp guarantees this value | |
4209 | * will never match a generated boot time. */ | |
4210 | verf[0] = 0; | |
4211 | verf[1] = (__be32)(NSEC_PER_SEC + 1); | |
4212 | } else { | |
f092075d CL |
4213 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
4214 | verf[0] = (__be32)nn->boot_time.tv_sec; | |
4215 | verf[1] = (__be32)nn->boot_time.tv_nsec; | |
2c820d9a | 4216 | } |
cd93710e CL |
4217 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
4218 | } | |
4219 | ||
e984a55a CL |
4220 | static unsigned int |
4221 | nfs4_init_nonuniform_client_string(const struct nfs_client *clp, | |
4222 | char *buf, size_t len) | |
4223 | { | |
4224 | unsigned int result; | |
4225 | ||
4226 | rcu_read_lock(); | |
4227 | result = scnprintf(buf, len, "Linux NFSv4.0 %s/%s %s", | |
4228 | clp->cl_ipaddr, | |
4229 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4230 | RPC_DISPLAY_ADDR), | |
4231 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4232 | RPC_DISPLAY_PROTO)); | |
4233 | rcu_read_unlock(); | |
4234 | return result; | |
4235 | } | |
4236 | ||
4237 | static unsigned int | |
4238 | nfs4_init_uniform_client_string(const struct nfs_client *clp, | |
4239 | char *buf, size_t len) | |
4240 | { | |
6f2ea7f2 CL |
4241 | char *nodename = clp->cl_rpcclient->cl_nodename; |
4242 | ||
4243 | if (nfs4_client_id_uniquifier[0] != '\0') | |
4244 | nodename = nfs4_client_id_uniquifier; | |
e984a55a CL |
4245 | return scnprintf(buf, len, "Linux NFSv%u.%u %s", |
4246 | clp->rpc_ops->version, clp->cl_minorversion, | |
6f2ea7f2 | 4247 | nodename); |
e984a55a CL |
4248 | } |
4249 | ||
6bbb4ae8 CL |
4250 | /** |
4251 | * nfs4_proc_setclientid - Negotiate client ID | |
4252 | * @clp: state data structure | |
4253 | * @program: RPC program for NFSv4 callback service | |
4254 | * @port: IP port number for NFS4 callback service | |
4255 | * @cred: RPC credential to use for this call | |
4256 | * @res: where to place the result | |
4257 | * | |
4258 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4259 | */ | |
bb8b27e5 TM |
4260 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
4261 | unsigned short port, struct rpc_cred *cred, | |
4262 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
4263 | { |
4264 | nfs4_verifier sc_verifier; | |
4265 | struct nfs4_setclientid setclientid = { | |
4266 | .sc_verifier = &sc_verifier, | |
4267 | .sc_prog = program, | |
f4eecd5d | 4268 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
4269 | }; |
4270 | struct rpc_message msg = { | |
4271 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
4272 | .rpc_argp = &setclientid, | |
bb8b27e5 | 4273 | .rpc_resp = res, |
286d7d6a | 4274 | .rpc_cred = cred, |
1da177e4 | 4275 | }; |
6bbb4ae8 | 4276 | int status; |
1da177e4 | 4277 | |
de734831 | 4278 | /* nfs_client_id4 */ |
f092075d | 4279 | nfs4_init_boot_verifier(clp, &sc_verifier); |
e984a55a CL |
4280 | if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags)) |
4281 | setclientid.sc_name_len = | |
4282 | nfs4_init_uniform_client_string(clp, | |
4283 | setclientid.sc_name, | |
4284 | sizeof(setclientid.sc_name)); | |
4285 | else | |
4286 | setclientid.sc_name_len = | |
4287 | nfs4_init_nonuniform_client_string(clp, | |
4288 | setclientid.sc_name, | |
4289 | sizeof(setclientid.sc_name)); | |
de734831 | 4290 | /* cb_client4 */ |
e984a55a | 4291 | rcu_read_lock(); |
de734831 | 4292 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, |
d4d3c507 CL |
4293 | sizeof(setclientid.sc_netid), |
4294 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4295 | RPC_DISPLAY_NETID)); | |
de734831 CL |
4296 | rcu_read_unlock(); |
4297 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, | |
d4d3c507 | 4298 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
4299 | clp->cl_ipaddr, port >> 8, port & 255); |
4300 | ||
6bbb4ae8 CL |
4301 | dprintk("NFS call setclientid auth=%s, '%.*s'\n", |
4302 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4303 | setclientid.sc_name_len, setclientid.sc_name); | |
4304 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
4305 | dprintk("NFS reply setclientid: %d\n", status); | |
4306 | return status; | |
1da177e4 LT |
4307 | } |
4308 | ||
6bbb4ae8 CL |
4309 | /** |
4310 | * nfs4_proc_setclientid_confirm - Confirm client ID | |
4311 | * @clp: state data structure | |
4312 | * @res: result of a previous SETCLIENTID | |
4313 | * @cred: RPC credential to use for this call | |
4314 | * | |
4315 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4316 | */ | |
fd954ae1 | 4317 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
4318 | struct nfs4_setclientid_res *arg, |
4319 | struct rpc_cred *cred) | |
1da177e4 | 4320 | { |
1da177e4 LT |
4321 | struct rpc_message msg = { |
4322 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 4323 | .rpc_argp = arg, |
286d7d6a | 4324 | .rpc_cred = cred, |
1da177e4 | 4325 | }; |
1da177e4 LT |
4326 | int status; |
4327 | ||
6bbb4ae8 CL |
4328 | dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", |
4329 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4330 | clp->cl_clientid); | |
1bd714f2 | 4331 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
6bbb4ae8 | 4332 | dprintk("NFS reply setclientid_confirm: %d\n", status); |
1da177e4 LT |
4333 | return status; |
4334 | } | |
4335 | ||
fe650407 TM |
4336 | struct nfs4_delegreturndata { |
4337 | struct nfs4_delegreturnargs args; | |
fa178f29 | 4338 | struct nfs4_delegreturnres res; |
fe650407 TM |
4339 | struct nfs_fh fh; |
4340 | nfs4_stateid stateid; | |
26e976a8 | 4341 | unsigned long timestamp; |
fa178f29 | 4342 | struct nfs_fattr fattr; |
fe650407 TM |
4343 | int rpc_status; |
4344 | }; | |
4345 | ||
fe650407 TM |
4346 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
4347 | { | |
4348 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 4349 | |
14516c3a TM |
4350 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4351 | return; | |
938e1010 | 4352 | |
79708861 RL |
4353 | switch (task->tk_status) { |
4354 | case -NFS4ERR_STALE_STATEID: | |
4355 | case -NFS4ERR_EXPIRED: | |
4356 | case 0: | |
fa178f29 | 4357 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
4358 | break; |
4359 | default: | |
4360 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
4361 | -EAGAIN) { | |
d00c5d43 | 4362 | rpc_restart_call_prepare(task); |
79708861 RL |
4363 | return; |
4364 | } | |
4365 | } | |
4366 | data->rpc_status = task->tk_status; | |
fe650407 TM |
4367 | } |
4368 | ||
4369 | static void nfs4_delegreturn_release(void *calldata) | |
4370 | { | |
fe650407 TM |
4371 | kfree(calldata); |
4372 | } | |
4373 | ||
938e1010 AA |
4374 | #if defined(CONFIG_NFS_V4_1) |
4375 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
4376 | { | |
4377 | struct nfs4_delegreturndata *d_data; | |
4378 | ||
4379 | d_data = (struct nfs4_delegreturndata *)data; | |
4380 | ||
d9afbd1b TM |
4381 | nfs4_setup_sequence(d_data->res.server, |
4382 | &d_data->args.seq_args, | |
4383 | &d_data->res.seq_res, | |
4384 | task); | |
938e1010 AA |
4385 | } |
4386 | #endif /* CONFIG_NFS_V4_1 */ | |
4387 | ||
c8d149f3 | 4388 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
4389 | #if defined(CONFIG_NFS_V4_1) |
4390 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
4391 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
4392 | .rpc_call_done = nfs4_delegreturn_done, |
4393 | .rpc_release = nfs4_delegreturn_release, | |
4394 | }; | |
4395 | ||
e6f81075 | 4396 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
4397 | { |
4398 | struct nfs4_delegreturndata *data; | |
fa178f29 | 4399 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 4400 | struct rpc_task *task; |
5138fde0 TM |
4401 | struct rpc_message msg = { |
4402 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
4403 | .rpc_cred = cred, | |
4404 | }; | |
c970aa85 TM |
4405 | struct rpc_task_setup task_setup_data = { |
4406 | .rpc_client = server->client, | |
5138fde0 | 4407 | .rpc_message = &msg, |
c970aa85 TM |
4408 | .callback_ops = &nfs4_delegreturn_ops, |
4409 | .flags = RPC_TASK_ASYNC, | |
4410 | }; | |
e6f81075 | 4411 | int status = 0; |
fe650407 | 4412 | |
8535b2be | 4413 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
4414 | if (data == NULL) |
4415 | return -ENOMEM; | |
9d12b216 | 4416 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
4417 | data->args.fhandle = &data->fh; |
4418 | data->args.stateid = &data->stateid; | |
9e907fec | 4419 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 4420 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 4421 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
4422 | data->res.fattr = &data->fattr; |
4423 | data->res.server = server; | |
5138fde0 | 4424 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 4425 | data->timestamp = jiffies; |
fe650407 TM |
4426 | data->rpc_status = 0; |
4427 | ||
c970aa85 | 4428 | task_setup_data.callback_data = data; |
1174dd1f TM |
4429 | msg.rpc_argp = &data->args; |
4430 | msg.rpc_resp = &data->res; | |
c970aa85 | 4431 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 4432 | if (IS_ERR(task)) |
fe650407 | 4433 | return PTR_ERR(task); |
e6f81075 TM |
4434 | if (!issync) |
4435 | goto out; | |
fe650407 | 4436 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
4437 | if (status != 0) |
4438 | goto out; | |
4439 | status = data->rpc_status; | |
e144cbcc TM |
4440 | if (status == 0) |
4441 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
4442 | else | |
4443 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 4444 | out: |
e6b3c4db | 4445 | rpc_put_task(task); |
fe650407 | 4446 | return status; |
1da177e4 LT |
4447 | } |
4448 | ||
e6f81075 | 4449 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
4450 | { |
4451 | struct nfs_server *server = NFS_SERVER(inode); | |
4452 | struct nfs4_exception exception = { }; | |
4453 | int err; | |
4454 | do { | |
e6f81075 | 4455 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
4456 | switch (err) { |
4457 | case -NFS4ERR_STALE_STATEID: | |
4458 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
4459 | case 0: |
4460 | return 0; | |
4461 | } | |
4462 | err = nfs4_handle_exception(server, err, &exception); | |
4463 | } while (exception.retry); | |
4464 | return err; | |
4465 | } | |
4466 | ||
4467 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
4468 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
4469 | ||
4470 | /* | |
4471 | * sleep, with exponential backoff, and retry the LOCK operation. | |
4472 | */ | |
4473 | static unsigned long | |
4474 | nfs4_set_lock_task_retry(unsigned long timeout) | |
4475 | { | |
d310310c | 4476 | freezable_schedule_timeout_killable(timeout); |
1da177e4 LT |
4477 | timeout <<= 1; |
4478 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
4479 | return NFS4_LOCK_MAXTIMEOUT; | |
4480 | return timeout; | |
4481 | } | |
4482 | ||
1da177e4 LT |
4483 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4484 | { | |
4485 | struct inode *inode = state->inode; | |
4486 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 4487 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 4488 | struct nfs_lockt_args arg = { |
1da177e4 | 4489 | .fh = NFS_FH(inode), |
911d1aaf | 4490 | .fl = request, |
1da177e4 | 4491 | }; |
911d1aaf TM |
4492 | struct nfs_lockt_res res = { |
4493 | .denied = request, | |
1da177e4 LT |
4494 | }; |
4495 | struct rpc_message msg = { | |
4496 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
4497 | .rpc_argp = &arg, | |
4498 | .rpc_resp = &res, | |
4499 | .rpc_cred = state->owner->so_cred, | |
4500 | }; | |
1da177e4 LT |
4501 | struct nfs4_lock_state *lsp; |
4502 | int status; | |
4503 | ||
911d1aaf | 4504 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
4505 | status = nfs4_set_lock_state(state, request); |
4506 | if (status != 0) | |
4507 | goto out; | |
4508 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 4509 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4510 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 4511 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
4512 | switch (status) { |
4513 | case 0: | |
4514 | request->fl_type = F_UNLCK; | |
4515 | break; | |
4516 | case -NFS4ERR_DENIED: | |
4517 | status = 0; | |
1da177e4 | 4518 | } |
70cc6487 | 4519 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 4520 | out: |
1da177e4 LT |
4521 | return status; |
4522 | } | |
4523 | ||
4524 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4525 | { | |
4526 | struct nfs4_exception exception = { }; | |
4527 | int err; | |
4528 | ||
4529 | do { | |
4530 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
4531 | _nfs4_proc_getlk(state, cmd, request), | |
4532 | &exception); | |
4533 | } while (exception.retry); | |
4534 | return err; | |
4535 | } | |
4536 | ||
4537 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
4538 | { | |
4539 | int res = 0; | |
4540 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
4541 | case FL_POSIX: | |
4542 | res = posix_lock_file_wait(file, fl); | |
4543 | break; | |
4544 | case FL_FLOCK: | |
4545 | res = flock_lock_file_wait(file, fl); | |
4546 | break; | |
4547 | default: | |
4548 | BUG(); | |
4549 | } | |
1da177e4 LT |
4550 | return res; |
4551 | } | |
4552 | ||
faf5f49c | 4553 | struct nfs4_unlockdata { |
911d1aaf TM |
4554 | struct nfs_locku_args arg; |
4555 | struct nfs_locku_res res; | |
faf5f49c TM |
4556 | struct nfs4_lock_state *lsp; |
4557 | struct nfs_open_context *ctx; | |
911d1aaf TM |
4558 | struct file_lock fl; |
4559 | const struct nfs_server *server; | |
26e976a8 | 4560 | unsigned long timestamp; |
faf5f49c TM |
4561 | }; |
4562 | ||
911d1aaf TM |
4563 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
4564 | struct nfs_open_context *ctx, | |
4565 | struct nfs4_lock_state *lsp, | |
4566 | struct nfs_seqid *seqid) | |
4567 | { | |
4568 | struct nfs4_unlockdata *p; | |
4569 | struct inode *inode = lsp->ls_state->inode; | |
4570 | ||
8535b2be | 4571 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
4572 | if (p == NULL) |
4573 | return NULL; | |
4574 | p->arg.fh = NFS_FH(inode); | |
4575 | p->arg.fl = &p->fl; | |
4576 | p->arg.seqid = seqid; | |
c1d51931 | 4577 | p->res.seqid = seqid; |
911d1aaf TM |
4578 | p->arg.stateid = &lsp->ls_stateid; |
4579 | p->lsp = lsp; | |
4580 | atomic_inc(&lsp->ls_count); | |
4581 | /* Ensure we don't close file until we're done freeing locks! */ | |
4582 | p->ctx = get_nfs_open_context(ctx); | |
4583 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4584 | p->server = NFS_SERVER(inode); | |
4585 | return p; | |
4586 | } | |
4587 | ||
06f814a3 | 4588 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 4589 | { |
963d8fe5 | 4590 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 4591 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
4592 | nfs4_put_lock_state(calldata->lsp); |
4593 | put_nfs_open_context(calldata->ctx); | |
4594 | kfree(calldata); | |
faf5f49c TM |
4595 | } |
4596 | ||
963d8fe5 | 4597 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 4598 | { |
963d8fe5 | 4599 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4600 | |
14516c3a TM |
4601 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
4602 | return; | |
faf5f49c TM |
4603 | switch (task->tk_status) { |
4604 | case 0: | |
f597c537 TM |
4605 | nfs4_stateid_copy(&calldata->lsp->ls_stateid, |
4606 | &calldata->res.stateid); | |
26e976a8 | 4607 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 4608 | break; |
9e33bed5 TM |
4609 | case -NFS4ERR_BAD_STATEID: |
4610 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
4611 | case -NFS4ERR_STALE_STATEID: |
4612 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
4613 | break; |
4614 | default: | |
9e33bed5 | 4615 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
d00c5d43 | 4616 | rpc_restart_call_prepare(task); |
faf5f49c | 4617 | } |
2b1bc308 | 4618 | nfs_release_seqid(calldata->arg.seqid); |
faf5f49c TM |
4619 | } |
4620 | ||
4ce70ada | 4621 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 4622 | { |
4ce70ada | 4623 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4624 | |
911d1aaf | 4625 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 4626 | goto out_wait; |
795a88c9 | 4627 | if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) { |
963d8fe5 | 4628 | /* Note: exit _without_ running nfs4_locku_done */ |
c8da19b9 | 4629 | goto out_no_action; |
faf5f49c | 4630 | } |
26e976a8 | 4631 | calldata->timestamp = jiffies; |
035168ab | 4632 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 4633 | &calldata->arg.seq_args, |
2240a9e2 TM |
4634 | &calldata->res.seq_res, |
4635 | task) != 0) | |
4636 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 TM |
4637 | return; |
4638 | out_no_action: | |
4639 | task->tk_action = NULL; | |
4640 | out_wait: | |
4641 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
faf5f49c TM |
4642 | } |
4643 | ||
963d8fe5 | 4644 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 4645 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 4646 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 4647 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
4648 | }; |
4649 | ||
a5d16a4d TM |
4650 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
4651 | struct nfs_open_context *ctx, | |
4652 | struct nfs4_lock_state *lsp, | |
4653 | struct nfs_seqid *seqid) | |
4654 | { | |
4655 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
4656 | struct rpc_message msg = { |
4657 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
4658 | .rpc_cred = ctx->cred, | |
4659 | }; | |
c970aa85 TM |
4660 | struct rpc_task_setup task_setup_data = { |
4661 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 4662 | .rpc_message = &msg, |
c970aa85 | 4663 | .callback_ops = &nfs4_locku_ops, |
101070ca | 4664 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4665 | .flags = RPC_TASK_ASYNC, |
4666 | }; | |
a5d16a4d | 4667 | |
137d6aca FF |
4668 | /* Ensure this is an unlock - when canceling a lock, the |
4669 | * canceled lock is passed in, and it won't be an unlock. | |
4670 | */ | |
4671 | fl->fl_type = F_UNLCK; | |
4672 | ||
a5d16a4d TM |
4673 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
4674 | if (data == NULL) { | |
4675 | nfs_free_seqid(seqid); | |
4676 | return ERR_PTR(-ENOMEM); | |
4677 | } | |
4678 | ||
9d12b216 | 4679 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4680 | msg.rpc_argp = &data->arg; |
4681 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4682 | task_setup_data.callback_data = data; |
4683 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
4684 | } |
4685 | ||
faf5f49c TM |
4686 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
4687 | { | |
65b62a29 TM |
4688 | struct inode *inode = state->inode; |
4689 | struct nfs4_state_owner *sp = state->owner; | |
4690 | struct nfs_inode *nfsi = NFS_I(inode); | |
911d1aaf | 4691 | struct nfs_seqid *seqid; |
1da177e4 | 4692 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
4693 | struct rpc_task *task; |
4694 | int status = 0; | |
536ff0f8 | 4695 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 4696 | |
8d0a8a9d | 4697 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
4698 | /* Unlock _before_ we do the RPC call */ |
4699 | request->fl_flags |= FL_EXISTS; | |
65b62a29 TM |
4700 | /* Exclude nfs_delegation_claim_locks() */ |
4701 | mutex_lock(&sp->so_delegreturn_mutex); | |
4702 | /* Exclude nfs4_reclaim_open_stateid() - note nesting! */ | |
19e03c57 TM |
4703 | down_read(&nfsi->rwsem); |
4704 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
4705 | up_read(&nfsi->rwsem); | |
65b62a29 | 4706 | mutex_unlock(&sp->so_delegreturn_mutex); |
9b073574 | 4707 | goto out; |
19e03c57 TM |
4708 | } |
4709 | up_read(&nfsi->rwsem); | |
65b62a29 | 4710 | mutex_unlock(&sp->so_delegreturn_mutex); |
8d0a8a9d | 4711 | if (status != 0) |
9b073574 TM |
4712 | goto out; |
4713 | /* Is this a delegated lock? */ | |
4714 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
4715 | goto out; | |
8d0a8a9d | 4716 | lsp = request->fl_u.nfs4_fl.owner; |
8535b2be | 4717 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 4718 | status = -ENOMEM; |
911d1aaf | 4719 | if (seqid == NULL) |
9b073574 | 4720 | goto out; |
cd3758e3 | 4721 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
4722 | status = PTR_ERR(task); |
4723 | if (IS_ERR(task)) | |
9b073574 | 4724 | goto out; |
a5d16a4d | 4725 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 4726 | rpc_put_task(task); |
9b073574 | 4727 | out: |
536ff0f8 | 4728 | request->fl_flags = fl_flags; |
1da177e4 LT |
4729 | return status; |
4730 | } | |
4731 | ||
a5d16a4d TM |
4732 | struct nfs4_lockdata { |
4733 | struct nfs_lock_args arg; | |
4734 | struct nfs_lock_res res; | |
4735 | struct nfs4_lock_state *lsp; | |
4736 | struct nfs_open_context *ctx; | |
4737 | struct file_lock fl; | |
26e976a8 | 4738 | unsigned long timestamp; |
a5d16a4d TM |
4739 | int rpc_status; |
4740 | int cancelled; | |
66179efe | 4741 | struct nfs_server *server; |
a5d16a4d TM |
4742 | }; |
4743 | ||
4744 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
4745 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
4746 | gfp_t gfp_mask) | |
1da177e4 | 4747 | { |
a5d16a4d TM |
4748 | struct nfs4_lockdata *p; |
4749 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 4750 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 4751 | |
8535b2be | 4752 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
4753 | if (p == NULL) |
4754 | return NULL; | |
4755 | ||
4756 | p->arg.fh = NFS_FH(inode); | |
4757 | p->arg.fl = &p->fl; | |
8535b2be | 4758 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4759 | if (p->arg.open_seqid == NULL) |
4760 | goto out_free; | |
8535b2be | 4761 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4762 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4763 | goto out_free_seqid; |
a5d16a4d | 4764 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4765 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 4766 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4767 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 4768 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4769 | p->lsp = lsp; |
66179efe | 4770 | p->server = server; |
a5d16a4d TM |
4771 | atomic_inc(&lsp->ls_count); |
4772 | p->ctx = get_nfs_open_context(ctx); | |
4773 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4774 | return p; | |
2f74c0a0 TM |
4775 | out_free_seqid: |
4776 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4777 | out_free: |
4778 | kfree(p); | |
4779 | return NULL; | |
4780 | } | |
4781 | ||
4782 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4783 | { | |
4784 | struct nfs4_lockdata *data = calldata; | |
4785 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4786 | |
3110ff80 | 4787 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4788 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
c8da19b9 | 4789 | goto out_wait; |
a5d16a4d TM |
4790 | /* Do we need to do an open_to_lock_owner? */ |
4791 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
8fe72bac | 4792 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) { |
2240a9e2 | 4793 | goto out_release_lock_seqid; |
8fe72bac | 4794 | } |
a5d16a4d TM |
4795 | data->arg.open_stateid = &state->stateid; |
4796 | data->arg.new_lock_owner = 1; | |
c1d51931 | 4797 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4798 | } else |
4799 | data->arg.new_lock_owner = 0; | |
5d422301 TM |
4800 | if (!nfs4_valid_open_stateid(state)) { |
4801 | data->rpc_status = -EBADF; | |
4802 | task->tk_action = NULL; | |
4803 | goto out_release_open_seqid; | |
4804 | } | |
26e976a8 | 4805 | data->timestamp = jiffies; |
035168ab TM |
4806 | if (nfs4_setup_sequence(data->server, |
4807 | &data->arg.seq_args, | |
2240a9e2 | 4808 | &data->res.seq_res, |
d9afbd1b | 4809 | task) == 0) |
66179efe | 4810 | return; |
5d422301 | 4811 | out_release_open_seqid: |
2240a9e2 TM |
4812 | nfs_release_seqid(data->arg.open_seqid); |
4813 | out_release_lock_seqid: | |
4814 | nfs_release_seqid(data->arg.lock_seqid); | |
c8da19b9 TM |
4815 | out_wait: |
4816 | nfs4_sequence_done(task, &data->res.seq_res); | |
8fe72bac | 4817 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
b257957e AB |
4818 | } |
4819 | ||
a5d16a4d TM |
4820 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4821 | { | |
4822 | struct nfs4_lockdata *data = calldata; | |
4823 | ||
3110ff80 | 4824 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4825 | |
14516c3a TM |
4826 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4827 | return; | |
66179efe | 4828 | |
a5d16a4d | 4829 | data->rpc_status = task->tk_status; |
a5d16a4d | 4830 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4831 | if (data->rpc_status == 0) |
4832 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4833 | else | |
4834 | goto out; | |
4835 | } | |
4836 | if (data->rpc_status == 0) { | |
f597c537 | 4837 | nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid); |
795a88c9 | 4838 | set_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags); |
3d4ff43d | 4839 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 4840 | } |
a5d16a4d | 4841 | out: |
3110ff80 | 4842 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4843 | } |
4844 | ||
4845 | static void nfs4_lock_release(void *calldata) | |
4846 | { | |
4847 | struct nfs4_lockdata *data = calldata; | |
4848 | ||
3110ff80 | 4849 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4850 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4851 | if (data->cancelled != 0) { |
4852 | struct rpc_task *task; | |
4853 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4854 | data->arg.lock_seqid); | |
4855 | if (!IS_ERR(task)) | |
bf294b41 | 4856 | rpc_put_task_async(task); |
3110ff80 | 4857 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4858 | } else |
4859 | nfs_free_seqid(data->arg.lock_seqid); | |
4860 | nfs4_put_lock_state(data->lsp); | |
4861 | put_nfs_open_context(data->ctx); | |
4862 | kfree(data); | |
3110ff80 | 4863 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4864 | } |
4865 | ||
4866 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4867 | .rpc_call_prepare = nfs4_lock_prepare, | |
4868 | .rpc_call_done = nfs4_lock_done, | |
4869 | .rpc_release = nfs4_lock_release, | |
4870 | }; | |
4871 | ||
2bee72a6 TM |
4872 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4873 | { | |
2bee72a6 TM |
4874 | switch (error) { |
4875 | case -NFS4ERR_ADMIN_REVOKED: | |
4876 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 4877 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 | 4878 | if (new_lock_owner != 0 || |
795a88c9 | 4879 | test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0) |
ecac799a | 4880 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
4881 | break; |
4882 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 4883 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
4884 | case -NFS4ERR_EXPIRED: |
4885 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
4886 | }; |
4887 | } | |
4888 | ||
afe6c27c | 4889 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4890 | { |
4891 | struct nfs4_lockdata *data; | |
4892 | struct rpc_task *task; | |
5138fde0 TM |
4893 | struct rpc_message msg = { |
4894 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4895 | .rpc_cred = state->owner->so_cred, | |
4896 | }; | |
c970aa85 TM |
4897 | struct rpc_task_setup task_setup_data = { |
4898 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4899 | .rpc_message = &msg, |
c970aa85 | 4900 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4901 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4902 | .flags = RPC_TASK_ASYNC, |
4903 | }; | |
a5d16a4d TM |
4904 | int ret; |
4905 | ||
3110ff80 | 4906 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4907 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4908 | fl->fl_u.nfs4_fl.owner, |
4909 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4910 | if (data == NULL) |
4911 | return -ENOMEM; | |
4912 | if (IS_SETLKW(cmd)) | |
4913 | data->arg.block = 1; | |
9d12b216 | 4914 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4915 | msg.rpc_argp = &data->arg; |
4916 | msg.rpc_resp = &data->res; | |
c970aa85 | 4917 | task_setup_data.callback_data = data; |
8fe72bac TM |
4918 | if (recovery_type > NFS_LOCK_NEW) { |
4919 | if (recovery_type == NFS_LOCK_RECLAIM) | |
4920 | data->arg.reclaim = NFS_LOCK_RECLAIM; | |
4921 | nfs4_set_sequence_privileged(&data->arg.seq_args); | |
4922 | } | |
c970aa85 | 4923 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 4924 | if (IS_ERR(task)) |
a5d16a4d | 4925 | return PTR_ERR(task); |
a5d16a4d TM |
4926 | ret = nfs4_wait_for_completion_rpc_task(task); |
4927 | if (ret == 0) { | |
4928 | ret = data->rpc_status; | |
2bee72a6 TM |
4929 | if (ret) |
4930 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4931 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4932 | } else |
4933 | data->cancelled = 1; | |
e6b3c4db | 4934 | rpc_put_task(task); |
3110ff80 | 4935 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4936 | return ret; |
1da177e4 LT |
4937 | } |
4938 | ||
4939 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4940 | { | |
202b50dc | 4941 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4942 | struct nfs4_exception exception = { |
4943 | .inode = state->inode, | |
4944 | }; | |
202b50dc TM |
4945 | int err; |
4946 | ||
4947 | do { | |
42a2d13e TM |
4948 | /* Cache the lock if possible... */ |
4949 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4950 | return 0; | |
afe6c27c | 4951 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 4952 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
4953 | break; |
4954 | nfs4_handle_exception(server, err, &exception); | |
4955 | } while (exception.retry); | |
4956 | return err; | |
1da177e4 LT |
4957 | } |
4958 | ||
4959 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4960 | { | |
202b50dc | 4961 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4962 | struct nfs4_exception exception = { |
4963 | .inode = state->inode, | |
4964 | }; | |
202b50dc TM |
4965 | int err; |
4966 | ||
6bfc93ef TM |
4967 | err = nfs4_set_lock_state(state, request); |
4968 | if (err != 0) | |
4969 | return err; | |
202b50dc | 4970 | do { |
42a2d13e TM |
4971 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4972 | return 0; | |
afe6c27c | 4973 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
4974 | switch (err) { |
4975 | default: | |
4976 | goto out; | |
4977 | case -NFS4ERR_GRACE: | |
4978 | case -NFS4ERR_DELAY: | |
4979 | nfs4_handle_exception(server, err, &exception); | |
4980 | err = 0; | |
4981 | } | |
202b50dc | 4982 | } while (exception.retry); |
a9ed2e25 | 4983 | out: |
202b50dc | 4984 | return err; |
1da177e4 LT |
4985 | } |
4986 | ||
f062eb6c | 4987 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd CL |
4988 | /** |
4989 | * nfs41_check_expired_locks - possibly free a lock stateid | |
4990 | * | |
4991 | * @state: NFSv4 state for an inode | |
4992 | * | |
4993 | * Returns NFS_OK if recovery for this stateid is now finished. | |
4994 | * Otherwise a negative NFS4ERR value is returned. | |
4995 | */ | |
b01dd1d8 | 4996 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 4997 | { |
eb64cf96 | 4998 | int status, ret = -NFS4ERR_BAD_STATEID; |
b01dd1d8 | 4999 | struct nfs4_lock_state *lsp; |
f062eb6c BS |
5000 | struct nfs_server *server = NFS_SERVER(state->inode); |
5001 | ||
b01dd1d8 | 5002 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
795a88c9 | 5003 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { |
b01dd1d8 BS |
5004 | status = nfs41_test_stateid(server, &lsp->ls_stateid); |
5005 | if (status != NFS_OK) { | |
3e60ffdd CL |
5006 | /* Free the stateid unless the server |
5007 | * informs us the stateid is unrecognized. */ | |
89af2739 CL |
5008 | if (status != -NFS4ERR_BAD_STATEID) |
5009 | nfs41_free_stateid(server, | |
5010 | &lsp->ls_stateid); | |
795a88c9 | 5011 | clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); |
b01dd1d8 BS |
5012 | ret = status; |
5013 | } | |
5014 | } | |
5015 | }; | |
5016 | ||
5017 | return ret; | |
5018 | } | |
5019 | ||
5020 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
5021 | { | |
5022 | int status = NFS_OK; | |
5023 | ||
5024 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
5025 | status = nfs41_check_expired_locks(state); | |
eb64cf96 CL |
5026 | if (status != NFS_OK) |
5027 | status = nfs4_lock_expired(state, request); | |
5028 | return status; | |
f062eb6c BS |
5029 | } |
5030 | #endif | |
5031 | ||
1da177e4 LT |
5032 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
5033 | { | |
9a99af49 | 5034 | struct nfs4_state_owner *sp = state->owner; |
19e03c57 | 5035 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 5036 | unsigned char fl_flags = request->fl_flags; |
9a99af49 | 5037 | unsigned int seq; |
8e469ebd | 5038 | int status = -ENOLCK; |
1da177e4 | 5039 | |
8e469ebd TM |
5040 | if ((fl_flags & FL_POSIX) && |
5041 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
5042 | goto out; | |
6bfc93ef | 5043 | /* Is this a delegated open? */ |
6bfc93ef TM |
5044 | status = nfs4_set_lock_state(state, request); |
5045 | if (status != 0) | |
5046 | goto out; | |
01c3b861 TM |
5047 | request->fl_flags |= FL_ACCESS; |
5048 | status = do_vfs_lock(request->fl_file, request); | |
5049 | if (status < 0) | |
5050 | goto out; | |
19e03c57 | 5051 | down_read(&nfsi->rwsem); |
01c3b861 | 5052 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 5053 | /* Yes: cache locks! */ |
01c3b861 | 5054 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
5055 | request->fl_flags = fl_flags & ~FL_SLEEP; |
5056 | status = do_vfs_lock(request->fl_file, request); | |
5057 | goto out_unlock; | |
01c3b861 | 5058 | } |
9a99af49 TM |
5059 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); |
5060 | up_read(&nfsi->rwsem); | |
afe6c27c | 5061 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 5062 | if (status != 0) |
9a99af49 TM |
5063 | goto out; |
5064 | down_read(&nfsi->rwsem); | |
5065 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) { | |
5066 | status = -NFS4ERR_DELAY; | |
01c3b861 | 5067 | goto out_unlock; |
9a99af49 | 5068 | } |
6bfc93ef | 5069 | /* Note: we always want to sleep here! */ |
01c3b861 | 5070 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 5071 | if (do_vfs_lock(request->fl_file, request) < 0) |
a030889a WAA |
5072 | printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " |
5073 | "manager!\n", __func__); | |
01c3b861 | 5074 | out_unlock: |
19e03c57 | 5075 | up_read(&nfsi->rwsem); |
01c3b861 TM |
5076 | out: |
5077 | request->fl_flags = fl_flags; | |
1da177e4 LT |
5078 | return status; |
5079 | } | |
5080 | ||
5081 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
5082 | { | |
a1d0b5ee TM |
5083 | struct nfs4_exception exception = { |
5084 | .state = state, | |
05ffe24f | 5085 | .inode = state->inode, |
a1d0b5ee | 5086 | }; |
1da177e4 LT |
5087 | int err; |
5088 | ||
5089 | do { | |
965b5d67 TM |
5090 | err = _nfs4_proc_setlk(state, cmd, request); |
5091 | if (err == -NFS4ERR_DENIED) | |
5092 | err = -EAGAIN; | |
1da177e4 | 5093 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 5094 | err, &exception); |
1da177e4 LT |
5095 | } while (exception.retry); |
5096 | return err; | |
5097 | } | |
5098 | ||
5099 | static int | |
5100 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
5101 | { | |
5102 | struct nfs_open_context *ctx; | |
5103 | struct nfs4_state *state; | |
5104 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
5105 | int status; | |
5106 | ||
5107 | /* verify open state */ | |
cd3758e3 | 5108 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
5109 | state = ctx->state; |
5110 | ||
5111 | if (request->fl_start < 0 || request->fl_end < 0) | |
5112 | return -EINVAL; | |
5113 | ||
d953126a TM |
5114 | if (IS_GETLK(cmd)) { |
5115 | if (state != NULL) | |
5116 | return nfs4_proc_getlk(state, F_GETLK, request); | |
5117 | return 0; | |
5118 | } | |
1da177e4 LT |
5119 | |
5120 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
5121 | return -EINVAL; | |
5122 | ||
d953126a TM |
5123 | if (request->fl_type == F_UNLCK) { |
5124 | if (state != NULL) | |
5125 | return nfs4_proc_unlck(state, cmd, request); | |
5126 | return 0; | |
5127 | } | |
1da177e4 | 5128 | |
d953126a TM |
5129 | if (state == NULL) |
5130 | return -ENOLCK; | |
55725513 TM |
5131 | /* |
5132 | * Don't rely on the VFS having checked the file open mode, | |
5133 | * since it won't do this for flock() locks. | |
5134 | */ | |
f44106e2 | 5135 | switch (request->fl_type) { |
55725513 TM |
5136 | case F_RDLCK: |
5137 | if (!(filp->f_mode & FMODE_READ)) | |
5138 | return -EBADF; | |
5139 | break; | |
5140 | case F_WRLCK: | |
5141 | if (!(filp->f_mode & FMODE_WRITE)) | |
5142 | return -EBADF; | |
5143 | } | |
5144 | ||
1da177e4 LT |
5145 | do { |
5146 | status = nfs4_proc_setlk(state, cmd, request); | |
5147 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
5148 | break; | |
5149 | timeout = nfs4_set_lock_task_retry(timeout); | |
5150 | status = -ERESTARTSYS; | |
5151 | if (signalled()) | |
5152 | break; | |
5153 | } while(status < 0); | |
1da177e4 LT |
5154 | return status; |
5155 | } | |
5156 | ||
888e694c TM |
5157 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
5158 | { | |
5159 | struct nfs_server *server = NFS_SERVER(state->inode); | |
5160 | struct nfs4_exception exception = { }; | |
5161 | int err; | |
5162 | ||
5163 | err = nfs4_set_lock_state(state, fl); | |
5164 | if (err != 0) | |
5165 | goto out; | |
5166 | do { | |
afe6c27c | 5167 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
d5122201 TM |
5168 | switch (err) { |
5169 | default: | |
a030889a WAA |
5170 | printk(KERN_ERR "NFS: %s: unhandled error " |
5171 | "%d.\n", __func__, err); | |
d5122201 | 5172 | case 0: |
965b5d67 | 5173 | case -ESTALE: |
d5122201 | 5174 | goto out; |
d5122201 | 5175 | case -NFS4ERR_STALE_CLIENTID: |
965b5d67 | 5176 | case -NFS4ERR_STALE_STATEID: |
37380e42 TM |
5177 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
5178 | case -NFS4ERR_EXPIRED: | |
0400a6b0 | 5179 | nfs4_schedule_lease_recovery(server->nfs_client); |
37380e42 | 5180 | err = -EAGAIN; |
0400a6b0 | 5181 | goto out; |
74e7bb73 RL |
5182 | case -NFS4ERR_BADSESSION: |
5183 | case -NFS4ERR_BADSLOT: | |
5184 | case -NFS4ERR_BAD_HIGH_SLOT: | |
5185 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
5186 | case -NFS4ERR_DEADSESSION: | |
37380e42 | 5187 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
9f594791 | 5188 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); |
37380e42 | 5189 | err = -EAGAIN; |
d5122201 | 5190 | goto out; |
a1d0b5ee | 5191 | case -NFS4ERR_DELEG_REVOKED: |
965b5d67 TM |
5192 | case -NFS4ERR_ADMIN_REVOKED: |
5193 | case -NFS4ERR_BAD_STATEID: | |
5194 | case -NFS4ERR_OPENMODE: | |
0400a6b0 | 5195 | nfs4_schedule_stateid_recovery(server, state); |
965b5d67 TM |
5196 | err = 0; |
5197 | goto out; | |
5198 | case -ENOMEM: | |
5199 | case -NFS4ERR_DENIED: | |
5200 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
5201 | err = 0; | |
5202 | goto out; | |
d5122201 | 5203 | } |
37380e42 | 5204 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
888e694c TM |
5205 | err = nfs4_handle_exception(server, err, &exception); |
5206 | } while (exception.retry); | |
5207 | out: | |
5208 | return err; | |
5209 | } | |
6b3b5496 | 5210 | |
cf470c3e TM |
5211 | struct nfs_release_lockowner_data { |
5212 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 5213 | struct nfs_server *server; |
cf470c3e TM |
5214 | struct nfs_release_lockowner_args args; |
5215 | }; | |
5216 | ||
d3c7b7cc TM |
5217 | static void nfs4_release_lockowner_release(void *calldata) |
5218 | { | |
cf470c3e | 5219 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 5220 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
5221 | kfree(calldata); |
5222 | } | |
5223 | ||
17280175 | 5224 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
d3c7b7cc TM |
5225 | .rpc_release = nfs4_release_lockowner_release, |
5226 | }; | |
5227 | ||
cf470c3e | 5228 | int nfs4_release_lockowner(struct nfs4_lock_state *lsp) |
d3c7b7cc TM |
5229 | { |
5230 | struct nfs_server *server = lsp->ls_state->owner->so_server; | |
cf470c3e | 5231 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
5232 | struct rpc_message msg = { |
5233 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
5234 | }; | |
5235 | ||
5236 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
cf470c3e TM |
5237 | return -EINVAL; |
5238 | data = kmalloc(sizeof(*data), GFP_NOFS); | |
5239 | if (!data) | |
5240 | return -ENOMEM; | |
5241 | data->lsp = lsp; | |
5ae67c4f | 5242 | data->server = server; |
cf470c3e TM |
5243 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
5244 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
5245 | data->args.lock_owner.s_dev = server->s_dev; | |
5246 | msg.rpc_argp = &data->args; | |
5247 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); | |
5248 | return 0; | |
d3c7b7cc TM |
5249 | } |
5250 | ||
aa1870af BF |
5251 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
5252 | ||
64c2ce8b AK |
5253 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
5254 | const void *buf, size_t buflen, | |
5255 | int flags, int type) | |
6b3b5496 | 5256 | { |
64c2ce8b AK |
5257 | if (strcmp(key, "") != 0) |
5258 | return -EINVAL; | |
4b580ee3 | 5259 | |
64c2ce8b | 5260 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5261 | } |
5262 | ||
64c2ce8b AK |
5263 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
5264 | void *buf, size_t buflen, int type) | |
6b3b5496 | 5265 | { |
64c2ce8b AK |
5266 | if (strcmp(key, "") != 0) |
5267 | return -EINVAL; | |
aa1870af | 5268 | |
64c2ce8b | 5269 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5270 | } |
5271 | ||
64c2ce8b AK |
5272 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
5273 | size_t list_len, const char *name, | |
5274 | size_t name_len, int type) | |
6b3b5496 | 5275 | { |
64c2ce8b | 5276 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 5277 | |
096455a2 BF |
5278 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
5279 | return 0; | |
64c2ce8b AK |
5280 | |
5281 | if (list && len <= list_len) | |
5282 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 5283 | return len; |
6b3b5496 BF |
5284 | } |
5285 | ||
533eb461 AA |
5286 | /* |
5287 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
5288 | */ | |
69aaaae1 TM |
5289 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
5290 | { | |
533eb461 AA |
5291 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
5292 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
5293 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 5294 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
5295 | return; |
5296 | ||
5297 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 5298 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
5299 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
5300 | fattr->nlink = 2; | |
5301 | } | |
5302 | ||
f05d147f BS |
5303 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5304 | const struct qstr *name, | |
5305 | struct nfs4_fs_locations *fs_locations, | |
5306 | struct page *page) | |
683b57b4 TM |
5307 | { |
5308 | struct nfs_server *server = NFS_SERVER(dir); | |
5309 | u32 bitmask[2] = { | |
361e624f | 5310 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
5311 | }; |
5312 | struct nfs4_fs_locations_arg args = { | |
5313 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 5314 | .name = name, |
683b57b4 TM |
5315 | .page = page, |
5316 | .bitmask = bitmask, | |
5317 | }; | |
22958463 BH |
5318 | struct nfs4_fs_locations_res res = { |
5319 | .fs_locations = fs_locations, | |
5320 | }; | |
683b57b4 TM |
5321 | struct rpc_message msg = { |
5322 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
5323 | .rpc_argp = &args, | |
22958463 | 5324 | .rpc_resp = &res, |
683b57b4 TM |
5325 | }; |
5326 | int status; | |
5327 | ||
3110ff80 | 5328 | dprintk("%s: start\n", __func__); |
533eb461 AA |
5329 | |
5330 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
5331 | * is not supported */ | |
5332 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
5333 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
5334 | else | |
5335 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
5336 | ||
c228fd3a | 5337 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 5338 | fs_locations->server = server; |
830b8e33 | 5339 | fs_locations->nlocations = 0; |
f05d147f | 5340 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 5341 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
5342 | return status; |
5343 | } | |
5344 | ||
f05d147f BS |
5345 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5346 | const struct qstr *name, | |
5347 | struct nfs4_fs_locations *fs_locations, | |
5348 | struct page *page) | |
db0a9593 BS |
5349 | { |
5350 | struct nfs4_exception exception = { }; | |
5351 | int err; | |
5352 | do { | |
5353 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
f05d147f | 5354 | _nfs4_proc_fs_locations(client, dir, name, fs_locations, page), |
db0a9593 BS |
5355 | &exception); |
5356 | } while (exception.retry); | |
5357 | return err; | |
5358 | } | |
5359 | ||
5a5ea0d4 BS |
5360 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) |
5361 | { | |
5362 | int status; | |
5363 | struct nfs4_secinfo_arg args = { | |
5364 | .dir_fh = NFS_FH(dir), | |
5365 | .name = name, | |
5366 | }; | |
5367 | struct nfs4_secinfo_res res = { | |
5368 | .flavors = flavors, | |
5369 | }; | |
5370 | struct rpc_message msg = { | |
5371 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
5372 | .rpc_argp = &args, | |
5373 | .rpc_resp = &res, | |
5374 | }; | |
5375 | ||
5376 | dprintk("NFS call secinfo %s\n", name->name); | |
5377 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); | |
5378 | dprintk("NFS reply secinfo: %d\n", status); | |
5379 | return status; | |
5380 | } | |
5381 | ||
72de53ec BS |
5382 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
5383 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
5384 | { |
5385 | struct nfs4_exception exception = { }; | |
5386 | int err; | |
5387 | do { | |
5388 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
5389 | _nfs4_proc_secinfo(dir, name, flavors), | |
5390 | &exception); | |
5391 | } while (exception.retry); | |
5392 | return err; | |
5393 | } | |
5394 | ||
557134a3 | 5395 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
5396 | /* |
5397 | * Check the exchange flags returned by the server for invalid flags, having | |
5398 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
5399 | * DS flags set. | |
5400 | */ | |
5401 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
5402 | { | |
5403 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
5404 | goto out_inval; | |
5405 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
5406 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
5407 | goto out_inval; | |
5408 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
5409 | goto out_inval; | |
5410 | return NFS_OK; | |
5411 | out_inval: | |
5412 | return -NFS4ERR_INVAL; | |
5413 | } | |
5414 | ||
78fe0f41 | 5415 | static bool |
79d4e1f0 CL |
5416 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
5417 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
5418 | { |
5419 | if (a->server_scope_sz == b->server_scope_sz && | |
5420 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
5421 | return true; | |
5422 | ||
5423 | return false; | |
5424 | } | |
5425 | ||
7c44f1ae WAA |
5426 | /* |
5427 | * nfs4_proc_bind_conn_to_session() | |
5428 | * | |
5429 | * The 4.1 client currently uses the same TCP connection for the | |
5430 | * fore and backchannel. | |
5431 | */ | |
2cf047c9 | 5432 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred) |
7c44f1ae WAA |
5433 | { |
5434 | int status; | |
5435 | struct nfs41_bind_conn_to_session_res res; | |
5436 | struct rpc_message msg = { | |
5437 | .rpc_proc = | |
5438 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
5439 | .rpc_argp = clp, | |
5440 | .rpc_resp = &res, | |
2cf047c9 | 5441 | .rpc_cred = cred, |
7c44f1ae WAA |
5442 | }; |
5443 | ||
5444 | dprintk("--> %s\n", __func__); | |
7c44f1ae WAA |
5445 | |
5446 | res.session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); | |
5447 | if (unlikely(res.session == NULL)) { | |
5448 | status = -ENOMEM; | |
5449 | goto out; | |
5450 | } | |
5451 | ||
5452 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5453 | if (status == 0) { | |
5454 | if (memcmp(res.session->sess_id.data, | |
5455 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { | |
5456 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
5457 | status = -EIO; | |
5458 | goto out_session; | |
5459 | } | |
5460 | if (res.dir != NFS4_CDFS4_BOTH) { | |
5461 | dprintk("NFS: %s: Unexpected direction from server\n", | |
5462 | __func__); | |
5463 | status = -EIO; | |
5464 | goto out_session; | |
5465 | } | |
5466 | if (res.use_conn_in_rdma_mode) { | |
5467 | dprintk("NFS: %s: Server returned RDMA mode = true\n", | |
5468 | __func__); | |
5469 | status = -EIO; | |
5470 | goto out_session; | |
5471 | } | |
5472 | } | |
5473 | out_session: | |
5474 | kfree(res.session); | |
5475 | out: | |
5476 | dprintk("<-- %s status= %d\n", __func__, status); | |
5477 | return status; | |
5478 | } | |
5479 | ||
99fe60d0 BH |
5480 | /* |
5481 | * nfs4_proc_exchange_id() | |
5482 | * | |
6bbb4ae8 CL |
5483 | * Returns zero, a negative errno, or a negative NFS4ERR status code. |
5484 | * | |
99fe60d0 BH |
5485 | * Since the clientid has expired, all compounds using sessions |
5486 | * associated with the stale clientid will be returning | |
5487 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
5488 | * be in some phase of session reset. | |
5489 | */ | |
4d643d1d | 5490 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
5491 | { |
5492 | nfs4_verifier verifier; | |
5493 | struct nfs41_exchange_id_args args = { | |
cd93710e | 5494 | .verifier = &verifier, |
99fe60d0 | 5495 | .client = clp, |
357f54d6 | 5496 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, |
99fe60d0 BH |
5497 | }; |
5498 | struct nfs41_exchange_id_res res = { | |
32b01310 | 5499 | 0 |
99fe60d0 BH |
5500 | }; |
5501 | int status; | |
5502 | struct rpc_message msg = { | |
5503 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
5504 | .rpc_argp = &args, | |
5505 | .rpc_resp = &res, | |
5506 | .rpc_cred = cred, | |
5507 | }; | |
99fe60d0 | 5508 | |
f092075d | 5509 | nfs4_init_boot_verifier(clp, &verifier); |
e984a55a CL |
5510 | args.id_len = nfs4_init_uniform_client_string(clp, args.id, |
5511 | sizeof(args.id)); | |
6bbb4ae8 CL |
5512 | dprintk("NFS call exchange_id auth=%s, '%.*s'\n", |
5513 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
5514 | args.id_len, args.id); | |
99fe60d0 | 5515 | |
acdeb69d | 5516 | res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
bbafffd2 | 5517 | GFP_NOFS); |
acdeb69d | 5518 | if (unlikely(res.server_owner == NULL)) { |
abe9a6d5 WAA |
5519 | status = -ENOMEM; |
5520 | goto out; | |
5521 | } | |
78fe0f41 | 5522 | |
79d4e1f0 | 5523 | res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 5524 | GFP_NOFS); |
177313f1 | 5525 | if (unlikely(res.server_scope == NULL)) { |
abe9a6d5 | 5526 | status = -ENOMEM; |
acdeb69d | 5527 | goto out_server_owner; |
abe9a6d5 | 5528 | } |
78fe0f41 | 5529 | |
bbafffd2 | 5530 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
177313f1 | 5531 | if (unlikely(res.impl_id == NULL)) { |
7d2ed9ac WAA |
5532 | status = -ENOMEM; |
5533 | goto out_server_scope; | |
5534 | } | |
5535 | ||
1bd714f2 | 5536 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
177313f1 | 5537 | if (status == 0) |
32b01310 | 5538 | status = nfs4_check_cl_exchange_flags(res.flags); |
78fe0f41 | 5539 | |
acdeb69d | 5540 | if (status == 0) { |
32b01310 TM |
5541 | clp->cl_clientid = res.clientid; |
5542 | clp->cl_exchange_flags = (res.flags & ~EXCHGID4_FLAG_CONFIRMED_R); | |
5543 | if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R)) | |
5544 | clp->cl_seqid = res.seqid; | |
5545 | ||
acdeb69d CL |
5546 | kfree(clp->cl_serverowner); |
5547 | clp->cl_serverowner = res.server_owner; | |
5548 | res.server_owner = NULL; | |
78fe0f41 | 5549 | |
7d2ed9ac | 5550 | /* use the most recent implementation id */ |
59155546 CL |
5551 | kfree(clp->cl_implid); |
5552 | clp->cl_implid = res.impl_id; | |
7d2ed9ac | 5553 | |
177313f1 | 5554 | if (clp->cl_serverscope != NULL && |
79d4e1f0 | 5555 | !nfs41_same_server_scope(clp->cl_serverscope, |
78fe0f41 WAA |
5556 | res.server_scope)) { |
5557 | dprintk("%s: server_scope mismatch detected\n", | |
5558 | __func__); | |
5559 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
79d4e1f0 CL |
5560 | kfree(clp->cl_serverscope); |
5561 | clp->cl_serverscope = NULL; | |
78fe0f41 WAA |
5562 | } |
5563 | ||
177313f1 | 5564 | if (clp->cl_serverscope == NULL) { |
79d4e1f0 | 5565 | clp->cl_serverscope = res.server_scope; |
abe9a6d5 WAA |
5566 | goto out; |
5567 | } | |
32b01310 TM |
5568 | } else |
5569 | kfree(res.impl_id); | |
7d2ed9ac | 5570 | |
acdeb69d CL |
5571 | out_server_owner: |
5572 | kfree(res.server_owner); | |
7d2ed9ac | 5573 | out_server_scope: |
abe9a6d5 WAA |
5574 | kfree(res.server_scope); |
5575 | out: | |
177313f1 | 5576 | if (clp->cl_implid != NULL) |
6bbb4ae8 | 5577 | dprintk("NFS reply exchange_id: Server Implementation ID: " |
7d2ed9ac | 5578 | "domain: %s, name: %s, date: %llu,%u\n", |
6bbb4ae8 | 5579 | clp->cl_implid->domain, clp->cl_implid->name, |
59155546 CL |
5580 | clp->cl_implid->date.seconds, |
5581 | clp->cl_implid->date.nseconds); | |
6bbb4ae8 | 5582 | dprintk("NFS reply exchange_id: %d\n", status); |
99fe60d0 BH |
5583 | return status; |
5584 | } | |
5585 | ||
66245539 TM |
5586 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
5587 | struct rpc_cred *cred) | |
5588 | { | |
5589 | struct rpc_message msg = { | |
5590 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
5591 | .rpc_argp = clp, | |
5592 | .rpc_cred = cred, | |
5593 | }; | |
5594 | int status; | |
5595 | ||
5596 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5597 | if (status) | |
02c67525 | 5598 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
5599 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
5600 | return status; | |
5601 | } | |
5602 | ||
5603 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
5604 | struct rpc_cred *cred) | |
5605 | { | |
5606 | unsigned int loop; | |
5607 | int ret; | |
5608 | ||
5609 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
5610 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
5611 | switch (ret) { | |
5612 | case -NFS4ERR_DELAY: | |
5613 | case -NFS4ERR_CLIENTID_BUSY: | |
5614 | ssleep(1); | |
5615 | break; | |
5616 | default: | |
5617 | return ret; | |
5618 | } | |
5619 | } | |
5620 | return 0; | |
5621 | } | |
5622 | ||
5623 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
5624 | { | |
5625 | struct rpc_cred *cred; | |
5626 | int ret = 0; | |
5627 | ||
5628 | if (clp->cl_mvops->minor_version < 1) | |
5629 | goto out; | |
5630 | if (clp->cl_exchange_flags == 0) | |
5631 | goto out; | |
05f4c350 CL |
5632 | if (clp->cl_preserve_clid) |
5633 | goto out; | |
66245539 TM |
5634 | cred = nfs4_get_exchange_id_cred(clp); |
5635 | ret = nfs4_proc_destroy_clientid(clp, cred); | |
5636 | if (cred) | |
5637 | put_rpccred(cred); | |
5638 | switch (ret) { | |
5639 | case 0: | |
5640 | case -NFS4ERR_STALE_CLIENTID: | |
5641 | clp->cl_exchange_flags = 0; | |
5642 | } | |
5643 | out: | |
5644 | return ret; | |
5645 | } | |
5646 | ||
2050f0cc AA |
5647 | struct nfs4_get_lease_time_data { |
5648 | struct nfs4_get_lease_time_args *args; | |
5649 | struct nfs4_get_lease_time_res *res; | |
5650 | struct nfs_client *clp; | |
5651 | }; | |
5652 | ||
5653 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
5654 | void *calldata) | |
5655 | { | |
2050f0cc AA |
5656 | struct nfs4_get_lease_time_data *data = |
5657 | (struct nfs4_get_lease_time_data *)calldata; | |
5658 | ||
5659 | dprintk("--> %s\n", __func__); | |
5660 | /* just setup sequence, do not trigger session recovery | |
5661 | since we're invoked within one */ | |
d9afbd1b TM |
5662 | nfs41_setup_sequence(data->clp->cl_session, |
5663 | &data->args->la_seq_args, | |
5664 | &data->res->lr_seq_res, | |
5665 | task); | |
2050f0cc AA |
5666 | dprintk("<-- %s\n", __func__); |
5667 | } | |
5668 | ||
5669 | /* | |
5670 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
5671 | * from sequence operation or clientid errors. | |
5672 | */ | |
5673 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
5674 | { | |
5675 | struct nfs4_get_lease_time_data *data = | |
5676 | (struct nfs4_get_lease_time_data *)calldata; | |
5677 | ||
5678 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5679 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
5680 | return; | |
2050f0cc AA |
5681 | switch (task->tk_status) { |
5682 | case -NFS4ERR_DELAY: | |
5683 | case -NFS4ERR_GRACE: | |
5684 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
5685 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
5686 | task->tk_status = 0; | |
a8a4ae3a AA |
5687 | /* fall through */ |
5688 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 5689 | rpc_restart_call_prepare(task); |
2050f0cc AA |
5690 | return; |
5691 | } | |
2050f0cc AA |
5692 | dprintk("<-- %s\n", __func__); |
5693 | } | |
5694 | ||
17280175 | 5695 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
5696 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
5697 | .rpc_call_done = nfs4_get_lease_time_done, | |
5698 | }; | |
5699 | ||
5700 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
5701 | { | |
5702 | struct rpc_task *task; | |
5703 | struct nfs4_get_lease_time_args args; | |
5704 | struct nfs4_get_lease_time_res res = { | |
5705 | .lr_fsinfo = fsinfo, | |
5706 | }; | |
5707 | struct nfs4_get_lease_time_data data = { | |
5708 | .args = &args, | |
5709 | .res = &res, | |
5710 | .clp = clp, | |
5711 | }; | |
5712 | struct rpc_message msg = { | |
5713 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
5714 | .rpc_argp = &args, | |
5715 | .rpc_resp = &res, | |
5716 | }; | |
5717 | struct rpc_task_setup task_setup = { | |
5718 | .rpc_client = clp->cl_rpcclient, | |
5719 | .rpc_message = &msg, | |
5720 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
5721 | .callback_data = &data, |
5722 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
5723 | }; |
5724 | int status; | |
5725 | ||
9d12b216 | 5726 | nfs41_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
8fe72bac | 5727 | nfs4_set_sequence_privileged(&args.la_seq_args); |
2050f0cc AA |
5728 | dprintk("--> %s\n", __func__); |
5729 | task = rpc_run_task(&task_setup); | |
5730 | ||
5731 | if (IS_ERR(task)) | |
5732 | status = PTR_ERR(task); | |
5733 | else { | |
5734 | status = task->tk_status; | |
5735 | rpc_put_task(task); | |
5736 | } | |
5737 | dprintk("<-- %s return %d\n", __func__, status); | |
5738 | ||
5739 | return status; | |
5740 | } | |
5741 | ||
fc931582 AA |
5742 | /* |
5743 | * Initialize the values to be used by the client in CREATE_SESSION | |
5744 | * If nfs4_init_session set the fore channel request and response sizes, | |
5745 | * use them. | |
5746 | * | |
5747 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
5748 | * always set csa_cachethis to FALSE because the current implementation | |
5749 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
5750 | */ | |
5751 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
5752 | { | |
5753 | struct nfs4_session *session = args->client->cl_session; | |
ae72ae67 TM |
5754 | unsigned int mxrqst_sz = session->fc_target_max_rqst_sz, |
5755 | mxresp_sz = session->fc_target_max_resp_sz; | |
fc931582 AA |
5756 | |
5757 | if (mxrqst_sz == 0) | |
5758 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
5759 | if (mxresp_sz == 0) | |
5760 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
5761 | /* Fore channel attributes */ | |
fc931582 AA |
5762 | args->fc_attrs.max_rqst_sz = mxrqst_sz; |
5763 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 | 5764 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 5765 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
5766 | |
5767 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 5768 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
5769 | __func__, |
5770 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 5771 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
5772 | |
5773 | /* Back channel attributes */ | |
fc931582 AA |
5774 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
5775 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
5776 | args->bc_attrs.max_resp_sz_cached = 0; | |
5777 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
5778 | args->bc_attrs.max_reqs = 1; | |
5779 | ||
5780 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
5781 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
5782 | __func__, | |
5783 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
5784 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
5785 | args->bc_attrs.max_reqs); | |
5786 | } | |
5787 | ||
43c2e885 | 5788 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 5789 | { |
43c2e885 BF |
5790 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
5791 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
5792 | ||
43c2e885 BF |
5793 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
5794 | return -EINVAL; | |
5795 | /* | |
5796 | * Our requested max_ops is the minimum we need; we're not | |
5797 | * prepared to break up compounds into smaller pieces than that. | |
5798 | * So, no point even trying to continue if the server won't | |
5799 | * cooperate: | |
5800 | */ | |
5801 | if (rcvd->max_ops < sent->max_ops) | |
5802 | return -EINVAL; | |
5803 | if (rcvd->max_reqs == 0) | |
5804 | return -EINVAL; | |
b4b9a0c1 VG |
5805 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
5806 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 5807 | return 0; |
8d35301d AA |
5808 | } |
5809 | ||
43c2e885 BF |
5810 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
5811 | { | |
5812 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
5813 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 5814 | |
43c2e885 BF |
5815 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
5816 | return -EINVAL; | |
5817 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
5818 | return -EINVAL; | |
5819 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
5820 | return -EINVAL; | |
5821 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 5822 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 5823 | return -EINVAL; |
b4b9a0c1 | 5824 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 BF |
5825 | return -EINVAL; |
5826 | return 0; | |
5827 | } | |
8d35301d | 5828 | |
8d35301d AA |
5829 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
5830 | struct nfs4_session *session) | |
5831 | { | |
43c2e885 | 5832 | int ret; |
8d35301d | 5833 | |
43c2e885 BF |
5834 | ret = nfs4_verify_fore_channel_attrs(args, session); |
5835 | if (ret) | |
5836 | return ret; | |
5837 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
5838 | } |
5839 | ||
848f5bda TM |
5840 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
5841 | struct rpc_cred *cred) | |
fc931582 AA |
5842 | { |
5843 | struct nfs4_session *session = clp->cl_session; | |
5844 | struct nfs41_create_session_args args = { | |
5845 | .client = clp, | |
5846 | .cb_program = NFS4_CALLBACK, | |
5847 | }; | |
5848 | struct nfs41_create_session_res res = { | |
5849 | .client = clp, | |
5850 | }; | |
5851 | struct rpc_message msg = { | |
5852 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
5853 | .rpc_argp = &args, | |
5854 | .rpc_resp = &res, | |
848f5bda | 5855 | .rpc_cred = cred, |
fc931582 AA |
5856 | }; |
5857 | int status; | |
5858 | ||
5859 | nfs4_init_channel_attrs(&args); | |
0f91421e | 5860 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 5861 | |
1bd714f2 | 5862 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
fc931582 | 5863 | |
43095d39 | 5864 | if (!status) { |
8d35301d AA |
5865 | /* Verify the session's negotiated channel_attrs values */ |
5866 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
5867 | /* Increment the clientid slot sequence id */ |
5868 | clp->cl_seqid++; | |
5869 | } | |
5870 | ||
5871 | return status; | |
5872 | } | |
5873 | ||
5874 | /* | |
5875 | * Issues a CREATE_SESSION operation to the server. | |
5876 | * It is the responsibility of the caller to verify the session is | |
5877 | * expired before calling this routine. | |
5878 | */ | |
848f5bda | 5879 | int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred) |
fc931582 AA |
5880 | { |
5881 | int status; | |
5882 | unsigned *ptr; | |
fc931582 AA |
5883 | struct nfs4_session *session = clp->cl_session; |
5884 | ||
5885 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
5886 | ||
848f5bda | 5887 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
5888 | if (status) |
5889 | goto out; | |
5890 | ||
aacd5537 AA |
5891 | /* Init or reset the session slot tables */ |
5892 | status = nfs4_setup_session_slot_tables(session); | |
5893 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
5894 | if (status) |
5895 | goto out; | |
5896 | ||
5897 | ptr = (unsigned *)&session->sess_id.data[0]; | |
5898 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
5899 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
5900 | out: |
5901 | dprintk("<-- %s\n", __func__); | |
5902 | return status; | |
5903 | } | |
5904 | ||
0f3e66c6 AA |
5905 | /* |
5906 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
5907 | * The caller must serialize access to this routine. | |
5908 | */ | |
848f5bda TM |
5909 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
5910 | struct rpc_cred *cred) | |
0f3e66c6 | 5911 | { |
848f5bda TM |
5912 | struct rpc_message msg = { |
5913 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
5914 | .rpc_argp = session, | |
5915 | .rpc_cred = cred, | |
5916 | }; | |
0f3e66c6 | 5917 | int status = 0; |
0f3e66c6 AA |
5918 | |
5919 | dprintk("--> nfs4_proc_destroy_session\n"); | |
5920 | ||
5921 | /* session is still being setup */ | |
5922 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
5923 | return status; | |
5924 | ||
1bd714f2 | 5925 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
0f3e66c6 AA |
5926 | |
5927 | if (status) | |
08106ac7 | 5928 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
5929 | "Session has been destroyed regardless...\n", status); |
5930 | ||
5931 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
5932 | return status; | |
5933 | } | |
5934 | ||
fc01cea9 AA |
5935 | /* |
5936 | * Renew the cl_session lease. | |
5937 | */ | |
d5f8d3fe TM |
5938 | struct nfs4_sequence_data { |
5939 | struct nfs_client *clp; | |
5940 | struct nfs4_sequence_args args; | |
5941 | struct nfs4_sequence_res res; | |
5942 | }; | |
5943 | ||
dc96aef9 AB |
5944 | static void nfs41_sequence_release(void *data) |
5945 | { | |
d5f8d3fe TM |
5946 | struct nfs4_sequence_data *calldata = data; |
5947 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 5948 | |
7135840f AB |
5949 | if (atomic_read(&clp->cl_count) > 1) |
5950 | nfs4_schedule_state_renewal(clp); | |
5951 | nfs_put_client(clp); | |
d5f8d3fe | 5952 | kfree(calldata); |
dc96aef9 AB |
5953 | } |
5954 | ||
aa5190d0 TM |
5955 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5956 | { | |
5957 | switch(task->tk_status) { | |
5958 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5959 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5960 | return -EAGAIN; | |
5961 | default: | |
0400a6b0 | 5962 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5963 | } |
5964 | return 0; | |
5965 | } | |
5966 | ||
dc96aef9 | 5967 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 5968 | { |
d5f8d3fe TM |
5969 | struct nfs4_sequence_data *calldata = data; |
5970 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 5971 | |
14516c3a TM |
5972 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
5973 | return; | |
fc01cea9 AA |
5974 | |
5975 | if (task->tk_status < 0) { | |
5976 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
5977 | if (atomic_read(&clp->cl_count) == 1) |
5978 | goto out; | |
fc01cea9 | 5979 | |
aa5190d0 TM |
5980 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
5981 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
5982 | return; |
5983 | } | |
5984 | } | |
fc01cea9 | 5985 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 5986 | out: |
fc01cea9 AA |
5987 | dprintk("<-- %s\n", __func__); |
5988 | } | |
5989 | ||
5990 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
5991 | { | |
d5f8d3fe TM |
5992 | struct nfs4_sequence_data *calldata = data; |
5993 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
5994 | struct nfs4_sequence_args *args; |
5995 | struct nfs4_sequence_res *res; | |
5996 | ||
fc01cea9 AA |
5997 | args = task->tk_msg.rpc_argp; |
5998 | res = task->tk_msg.rpc_resp; | |
5999 | ||
d9afbd1b | 6000 | nfs41_setup_sequence(clp->cl_session, args, res, task); |
fc01cea9 AA |
6001 | } |
6002 | ||
6003 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
6004 | .rpc_call_done = nfs41_sequence_call_done, | |
6005 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 6006 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
6007 | }; |
6008 | ||
8fe72bac TM |
6009 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, |
6010 | struct rpc_cred *cred, | |
6011 | bool is_privileged) | |
fc01cea9 | 6012 | { |
d5f8d3fe | 6013 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
6014 | struct rpc_message msg = { |
6015 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
6016 | .rpc_cred = cred, | |
6017 | }; | |
71ac6da9 TM |
6018 | struct rpc_task_setup task_setup_data = { |
6019 | .rpc_client = clp->cl_rpcclient, | |
6020 | .rpc_message = &msg, | |
8fe72bac | 6021 | .callback_ops = &nfs41_sequence_ops, |
71ac6da9 TM |
6022 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT, |
6023 | }; | |
fc01cea9 | 6024 | |
7135840f | 6025 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 6026 | return ERR_PTR(-EIO); |
dfb4f309 | 6027 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 6028 | if (calldata == NULL) { |
7135840f | 6029 | nfs_put_client(clp); |
71ac6da9 | 6030 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 6031 | } |
9d12b216 | 6032 | nfs41_init_sequence(&calldata->args, &calldata->res, 0); |
8fe72bac TM |
6033 | if (is_privileged) |
6034 | nfs4_set_sequence_privileged(&calldata->args); | |
d5f8d3fe TM |
6035 | msg.rpc_argp = &calldata->args; |
6036 | msg.rpc_resp = &calldata->res; | |
6037 | calldata->clp = clp; | |
71ac6da9 | 6038 | task_setup_data.callback_data = calldata; |
fc01cea9 | 6039 | |
71ac6da9 TM |
6040 | return rpc_run_task(&task_setup_data); |
6041 | } | |
6042 | ||
2f60ea6b | 6043 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
6044 | { |
6045 | struct rpc_task *task; | |
6046 | int ret = 0; | |
6047 | ||
2f60ea6b TM |
6048 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
6049 | return 0; | |
8fe72bac | 6050 | task = _nfs41_proc_sequence(clp, cred, false); |
71ac6da9 TM |
6051 | if (IS_ERR(task)) |
6052 | ret = PTR_ERR(task); | |
6053 | else | |
bf294b41 | 6054 | rpc_put_task_async(task); |
71ac6da9 TM |
6055 | dprintk("<-- %s status=%d\n", __func__, ret); |
6056 | return ret; | |
6057 | } | |
6058 | ||
6059 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
6060 | { | |
6061 | struct rpc_task *task; | |
6062 | int ret; | |
6063 | ||
8fe72bac | 6064 | task = _nfs41_proc_sequence(clp, cred, true); |
71ac6da9 TM |
6065 | if (IS_ERR(task)) { |
6066 | ret = PTR_ERR(task); | |
6067 | goto out; | |
6068 | } | |
6069 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
6070 | if (!ret) { |
6071 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
6072 | ||
6073 | if (task->tk_status == 0) | |
6074 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 6075 | ret = task->tk_status; |
b4410c2f | 6076 | } |
71ac6da9 TM |
6077 | rpc_put_task(task); |
6078 | out: | |
6079 | dprintk("<-- %s status=%d\n", __func__, ret); | |
6080 | return ret; | |
fc01cea9 AA |
6081 | } |
6082 | ||
fce5c838 RL |
6083 | struct nfs4_reclaim_complete_data { |
6084 | struct nfs_client *clp; | |
6085 | struct nfs41_reclaim_complete_args arg; | |
6086 | struct nfs41_reclaim_complete_res res; | |
6087 | }; | |
6088 | ||
6089 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
6090 | { | |
6091 | struct nfs4_reclaim_complete_data *calldata = data; | |
6092 | ||
d9afbd1b TM |
6093 | nfs41_setup_sequence(calldata->clp->cl_session, |
6094 | &calldata->arg.seq_args, | |
6095 | &calldata->res.seq_res, | |
6096 | task); | |
fce5c838 RL |
6097 | } |
6098 | ||
aa5190d0 TM |
6099 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
6100 | { | |
6101 | switch(task->tk_status) { | |
6102 | case 0: | |
6103 | case -NFS4ERR_COMPLETE_ALREADY: | |
6104 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
6105 | break; | |
6106 | case -NFS4ERR_DELAY: | |
aa5190d0 | 6107 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
6108 | /* fall through */ |
6109 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
6110 | return -EAGAIN; |
6111 | default: | |
0400a6b0 | 6112 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
6113 | } |
6114 | return 0; | |
6115 | } | |
6116 | ||
fce5c838 RL |
6117 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
6118 | { | |
6119 | struct nfs4_reclaim_complete_data *calldata = data; | |
6120 | struct nfs_client *clp = calldata->clp; | |
6121 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
6122 | ||
6123 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
6124 | if (!nfs41_sequence_done(task, res)) |
6125 | return; | |
fce5c838 | 6126 | |
aa5190d0 TM |
6127 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
6128 | rpc_restart_call_prepare(task); | |
6129 | return; | |
6130 | } | |
fce5c838 RL |
6131 | dprintk("<-- %s\n", __func__); |
6132 | } | |
6133 | ||
6134 | static void nfs4_free_reclaim_complete_data(void *data) | |
6135 | { | |
6136 | struct nfs4_reclaim_complete_data *calldata = data; | |
6137 | ||
6138 | kfree(calldata); | |
6139 | } | |
6140 | ||
6141 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
6142 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
6143 | .rpc_call_done = nfs4_reclaim_complete_done, | |
6144 | .rpc_release = nfs4_free_reclaim_complete_data, | |
6145 | }; | |
6146 | ||
6147 | /* | |
6148 | * Issue a global reclaim complete. | |
6149 | */ | |
6150 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
6151 | { | |
6152 | struct nfs4_reclaim_complete_data *calldata; | |
6153 | struct rpc_task *task; | |
6154 | struct rpc_message msg = { | |
6155 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
6156 | }; | |
6157 | struct rpc_task_setup task_setup_data = { | |
6158 | .rpc_client = clp->cl_rpcclient, | |
6159 | .rpc_message = &msg, | |
6160 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
6161 | .flags = RPC_TASK_ASYNC, | |
6162 | }; | |
6163 | int status = -ENOMEM; | |
6164 | ||
6165 | dprintk("--> %s\n", __func__); | |
8535b2be | 6166 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
6167 | if (calldata == NULL) |
6168 | goto out; | |
6169 | calldata->clp = clp; | |
6170 | calldata->arg.one_fs = 0; | |
fce5c838 | 6171 | |
9d12b216 | 6172 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
8fe72bac | 6173 | nfs4_set_sequence_privileged(&calldata->arg.seq_args); |
fce5c838 RL |
6174 | msg.rpc_argp = &calldata->arg; |
6175 | msg.rpc_resp = &calldata->res; | |
6176 | task_setup_data.callback_data = calldata; | |
6177 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 6178 | if (IS_ERR(task)) { |
fce5c838 | 6179 | status = PTR_ERR(task); |
acf82b85 DC |
6180 | goto out; |
6181 | } | |
c34c32ea AA |
6182 | status = nfs4_wait_for_completion_rpc_task(task); |
6183 | if (status == 0) | |
6184 | status = task->tk_status; | |
fce5c838 | 6185 | rpc_put_task(task); |
acf82b85 | 6186 | return 0; |
fce5c838 RL |
6187 | out: |
6188 | dprintk("<-- %s status=%d\n", __func__, status); | |
6189 | return status; | |
6190 | } | |
b1f69b75 AA |
6191 | |
6192 | static void | |
6193 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
6194 | { | |
6195 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 6196 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
6ba7db34 | 6197 | struct nfs4_session *session = nfs4_get_session(server); |
b1f69b75 AA |
6198 | |
6199 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
6200 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
6201 | * right now covering the LAYOUTGET we are about to send. | |
6202 | * However, that is not so catastrophic, and there seems | |
6203 | * to be no way to prevent it completely. | |
6204 | */ | |
6ba7db34 | 6205 | if (nfs41_setup_sequence(session, &lgp->args.seq_args, |
9d12b216 | 6206 | &lgp->res.seq_res, task)) |
b1f69b75 | 6207 | return; |
cf7d63f1 FI |
6208 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
6209 | NFS_I(lgp->args.inode)->layout, | |
6210 | lgp->args.ctx->state)) { | |
6211 | rpc_exit(task, NFS4_OK); | |
cf7d63f1 | 6212 | } |
b1f69b75 AA |
6213 | } |
6214 | ||
6215 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
6216 | { | |
6217 | struct nfs4_layoutget *lgp = calldata; | |
ee314c2a TM |
6218 | struct inode *inode = lgp->args.inode; |
6219 | struct nfs_server *server = NFS_SERVER(inode); | |
6220 | struct pnfs_layout_hdr *lo; | |
6221 | struct nfs4_state *state = NULL; | |
30005121 | 6222 | unsigned long timeo, giveup; |
b1f69b75 AA |
6223 | |
6224 | dprintk("--> %s\n", __func__); | |
6225 | ||
6ba7db34 | 6226 | if (!nfs41_sequence_done(task, &lgp->res.seq_res)) |
ee314c2a | 6227 | goto out; |
b1f69b75 AA |
6228 | |
6229 | switch (task->tk_status) { | |
6230 | case 0: | |
ee314c2a | 6231 | goto out; |
b1f69b75 AA |
6232 | case -NFS4ERR_LAYOUTTRYLATER: |
6233 | case -NFS4ERR_RECALLCONFLICT: | |
30005121 WAA |
6234 | timeo = rpc_get_timeout(task->tk_client); |
6235 | giveup = lgp->args.timestamp + timeo; | |
6236 | if (time_after(giveup, jiffies)) | |
6237 | task->tk_status = -NFS4ERR_DELAY; | |
ee314c2a TM |
6238 | break; |
6239 | case -NFS4ERR_EXPIRED: | |
6240 | case -NFS4ERR_BAD_STATEID: | |
6241 | spin_lock(&inode->i_lock); | |
6242 | lo = NFS_I(inode)->layout; | |
6243 | if (!lo || list_empty(&lo->plh_segs)) { | |
6244 | spin_unlock(&inode->i_lock); | |
6245 | /* If the open stateid was bad, then recover it. */ | |
6246 | state = lgp->args.ctx->state; | |
6247 | } else { | |
6248 | LIST_HEAD(head); | |
6249 | ||
6250 | pnfs_mark_matching_lsegs_invalid(lo, &head, NULL); | |
6251 | spin_unlock(&inode->i_lock); | |
6252 | /* Mark the bad layout state as invalid, then | |
6253 | * retry using the open stateid. */ | |
6254 | pnfs_free_lseg_list(&head); | |
b1f69b75 AA |
6255 | } |
6256 | } | |
ee314c2a TM |
6257 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
6258 | rpc_restart_call_prepare(task); | |
6259 | out: | |
b1f69b75 AA |
6260 | dprintk("<-- %s\n", __func__); |
6261 | } | |
6262 | ||
8554116e IK |
6263 | static size_t max_response_pages(struct nfs_server *server) |
6264 | { | |
6265 | u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; | |
6266 | return nfs_page_array_len(0, max_resp_sz); | |
6267 | } | |
6268 | ||
6269 | static void nfs4_free_pages(struct page **pages, size_t size) | |
6270 | { | |
6271 | int i; | |
6272 | ||
6273 | if (!pages) | |
6274 | return; | |
6275 | ||
6276 | for (i = 0; i < size; i++) { | |
6277 | if (!pages[i]) | |
6278 | break; | |
6279 | __free_page(pages[i]); | |
6280 | } | |
6281 | kfree(pages); | |
6282 | } | |
6283 | ||
6284 | static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags) | |
6285 | { | |
6286 | struct page **pages; | |
6287 | int i; | |
6288 | ||
6289 | pages = kcalloc(size, sizeof(struct page *), gfp_flags); | |
6290 | if (!pages) { | |
6291 | dprintk("%s: can't alloc array of %zu pages\n", __func__, size); | |
6292 | return NULL; | |
6293 | } | |
6294 | ||
6295 | for (i = 0; i < size; i++) { | |
6296 | pages[i] = alloc_page(gfp_flags); | |
6297 | if (!pages[i]) { | |
6298 | dprintk("%s: failed to allocate page\n", __func__); | |
6299 | nfs4_free_pages(pages, size); | |
6300 | return NULL; | |
6301 | } | |
6302 | } | |
6303 | ||
6304 | return pages; | |
6305 | } | |
6306 | ||
b1f69b75 AA |
6307 | static void nfs4_layoutget_release(void *calldata) |
6308 | { | |
6309 | struct nfs4_layoutget *lgp = calldata; | |
a47970ff WAA |
6310 | struct inode *inode = lgp->args.inode; |
6311 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 6312 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
6313 | |
6314 | dprintk("--> %s\n", __func__); | |
8554116e | 6315 | nfs4_free_pages(lgp->args.layout.pages, max_pages); |
a47970ff | 6316 | pnfs_put_layout_hdr(NFS_I(inode)->layout); |
b1f69b75 AA |
6317 | put_nfs_open_context(lgp->args.ctx); |
6318 | kfree(calldata); | |
6319 | dprintk("<-- %s\n", __func__); | |
6320 | } | |
6321 | ||
6322 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
6323 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
6324 | .rpc_call_done = nfs4_layoutget_done, | |
6325 | .rpc_release = nfs4_layoutget_release, | |
6326 | }; | |
6327 | ||
a0b0a6e3 TM |
6328 | struct pnfs_layout_segment * |
6329 | nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags) | |
b1f69b75 | 6330 | { |
a47970ff WAA |
6331 | struct inode *inode = lgp->args.inode; |
6332 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 6333 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
6334 | struct rpc_task *task; |
6335 | struct rpc_message msg = { | |
6336 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
6337 | .rpc_argp = &lgp->args, | |
6338 | .rpc_resp = &lgp->res, | |
6339 | }; | |
6340 | struct rpc_task_setup task_setup_data = { | |
6341 | .rpc_client = server->client, | |
6342 | .rpc_message = &msg, | |
6343 | .callback_ops = &nfs4_layoutget_call_ops, | |
6344 | .callback_data = lgp, | |
6345 | .flags = RPC_TASK_ASYNC, | |
6346 | }; | |
a0b0a6e3 | 6347 | struct pnfs_layout_segment *lseg = NULL; |
b1f69b75 AA |
6348 | int status = 0; |
6349 | ||
6350 | dprintk("--> %s\n", __func__); | |
6351 | ||
8554116e IK |
6352 | lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags); |
6353 | if (!lgp->args.layout.pages) { | |
6354 | nfs4_layoutget_release(lgp); | |
a0b0a6e3 | 6355 | return ERR_PTR(-ENOMEM); |
8554116e IK |
6356 | } |
6357 | lgp->args.layout.pglen = max_pages * PAGE_SIZE; | |
30005121 | 6358 | lgp->args.timestamp = jiffies; |
8554116e | 6359 | |
35124a09 | 6360 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 6361 | lgp->res.seq_res.sr_slot = NULL; |
9d12b216 | 6362 | nfs41_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
a47970ff WAA |
6363 | |
6364 | /* nfs4_layoutget_release calls pnfs_put_layout_hdr */ | |
6365 | pnfs_get_layout_hdr(NFS_I(inode)->layout); | |
6366 | ||
b1f69b75 AA |
6367 | task = rpc_run_task(&task_setup_data); |
6368 | if (IS_ERR(task)) | |
a0b0a6e3 | 6369 | return ERR_CAST(task); |
b1f69b75 | 6370 | status = nfs4_wait_for_completion_rpc_task(task); |
c31663d4 FI |
6371 | if (status == 0) |
6372 | status = task->tk_status; | |
085b7a45 WAA |
6373 | /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */ |
6374 | if (status == 0 && lgp->res.layoutp->len) | |
a0b0a6e3 | 6375 | lseg = pnfs_layout_process(lgp); |
b1f69b75 AA |
6376 | rpc_put_task(task); |
6377 | dprintk("<-- %s status=%d\n", __func__, status); | |
a0b0a6e3 TM |
6378 | if (status) |
6379 | return ERR_PTR(status); | |
6380 | return lseg; | |
b1f69b75 AA |
6381 | } |
6382 | ||
cbe82603 BH |
6383 | static void |
6384 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
6385 | { | |
6386 | struct nfs4_layoutreturn *lrp = calldata; | |
6387 | ||
6388 | dprintk("--> %s\n", __func__); | |
d9afbd1b TM |
6389 | nfs41_setup_sequence(lrp->clp->cl_session, |
6390 | &lrp->args.seq_args, | |
6391 | &lrp->res.seq_res, | |
6392 | task); | |
cbe82603 BH |
6393 | } |
6394 | ||
6395 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
6396 | { | |
6397 | struct nfs4_layoutreturn *lrp = calldata; | |
6398 | struct nfs_server *server; | |
6399 | ||
6400 | dprintk("--> %s\n", __func__); | |
6401 | ||
6ba7db34 | 6402 | if (!nfs41_sequence_done(task, &lrp->res.seq_res)) |
cbe82603 BH |
6403 | return; |
6404 | ||
6405 | server = NFS_SERVER(lrp->args.inode); | |
6406 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 6407 | rpc_restart_call_prepare(task); |
cbe82603 BH |
6408 | return; |
6409 | } | |
cbe82603 BH |
6410 | dprintk("<-- %s\n", __func__); |
6411 | } | |
6412 | ||
6413 | static void nfs4_layoutreturn_release(void *calldata) | |
6414 | { | |
6415 | struct nfs4_layoutreturn *lrp = calldata; | |
849b286f | 6416 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
6417 | |
6418 | dprintk("--> %s\n", __func__); | |
849b286f TM |
6419 | spin_lock(&lo->plh_inode->i_lock); |
6420 | if (lrp->res.lrs_present) | |
6421 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); | |
6422 | lo->plh_block_lgets--; | |
6423 | spin_unlock(&lo->plh_inode->i_lock); | |
70c3bd2b | 6424 | pnfs_put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
6425 | kfree(calldata); |
6426 | dprintk("<-- %s\n", __func__); | |
6427 | } | |
6428 | ||
6429 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
6430 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
6431 | .rpc_call_done = nfs4_layoutreturn_done, | |
6432 | .rpc_release = nfs4_layoutreturn_release, | |
6433 | }; | |
6434 | ||
6435 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
6436 | { | |
6437 | struct rpc_task *task; | |
6438 | struct rpc_message msg = { | |
6439 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
6440 | .rpc_argp = &lrp->args, | |
6441 | .rpc_resp = &lrp->res, | |
6442 | }; | |
6443 | struct rpc_task_setup task_setup_data = { | |
6444 | .rpc_client = lrp->clp->cl_rpcclient, | |
6445 | .rpc_message = &msg, | |
6446 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
6447 | .callback_data = lrp, | |
6448 | }; | |
6449 | int status; | |
6450 | ||
6451 | dprintk("--> %s\n", __func__); | |
9d12b216 | 6452 | nfs41_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
6453 | task = rpc_run_task(&task_setup_data); |
6454 | if (IS_ERR(task)) | |
6455 | return PTR_ERR(task); | |
6456 | status = task->tk_status; | |
6457 | dprintk("<-- %s status=%d\n", __func__, status); | |
6458 | rpc_put_task(task); | |
6459 | return status; | |
6460 | } | |
6461 | ||
7f11d8d3 AA |
6462 | /* |
6463 | * Retrieve the list of Data Server devices from the MDS. | |
6464 | */ | |
6465 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
6466 | const struct nfs_fh *fh, | |
6467 | struct pnfs_devicelist *devlist) | |
6468 | { | |
6469 | struct nfs4_getdevicelist_args args = { | |
6470 | .fh = fh, | |
6471 | .layoutclass = server->pnfs_curr_ld->id, | |
6472 | }; | |
6473 | struct nfs4_getdevicelist_res res = { | |
6474 | .devlist = devlist, | |
6475 | }; | |
6476 | struct rpc_message msg = { | |
6477 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
6478 | .rpc_argp = &args, | |
6479 | .rpc_resp = &res, | |
6480 | }; | |
6481 | int status; | |
6482 | ||
6483 | dprintk("--> %s\n", __func__); | |
6484 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
6485 | &res.seq_res, 0); | |
6486 | dprintk("<-- %s status=%d\n", __func__, status); | |
6487 | return status; | |
6488 | } | |
6489 | ||
6490 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
6491 | const struct nfs_fh *fh, | |
6492 | struct pnfs_devicelist *devlist) | |
6493 | { | |
6494 | struct nfs4_exception exception = { }; | |
6495 | int err; | |
6496 | ||
6497 | do { | |
6498 | err = nfs4_handle_exception(server, | |
6499 | _nfs4_getdevicelist(server, fh, devlist), | |
6500 | &exception); | |
6501 | } while (exception.retry); | |
6502 | ||
6503 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
6504 | err, devlist->num_devs); | |
6505 | ||
6506 | return err; | |
6507 | } | |
6508 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
6509 | ||
b1f69b75 AA |
6510 | static int |
6511 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6512 | { | |
6513 | struct nfs4_getdeviceinfo_args args = { | |
6514 | .pdev = pdev, | |
6515 | }; | |
6516 | struct nfs4_getdeviceinfo_res res = { | |
6517 | .pdev = pdev, | |
6518 | }; | |
6519 | struct rpc_message msg = { | |
6520 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
6521 | .rpc_argp = &args, | |
6522 | .rpc_resp = &res, | |
6523 | }; | |
6524 | int status; | |
6525 | ||
6526 | dprintk("--> %s\n", __func__); | |
7c513058 | 6527 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
6528 | dprintk("<-- %s status=%d\n", __func__, status); |
6529 | ||
6530 | return status; | |
6531 | } | |
6532 | ||
6533 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6534 | { | |
6535 | struct nfs4_exception exception = { }; | |
6536 | int err; | |
6537 | ||
6538 | do { | |
6539 | err = nfs4_handle_exception(server, | |
6540 | _nfs4_proc_getdeviceinfo(server, pdev), | |
6541 | &exception); | |
6542 | } while (exception.retry); | |
6543 | return err; | |
6544 | } | |
6545 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
6546 | ||
863a3c6c AA |
6547 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
6548 | { | |
6549 | struct nfs4_layoutcommit_data *data = calldata; | |
6550 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6ba7db34 | 6551 | struct nfs4_session *session = nfs4_get_session(server); |
863a3c6c | 6552 | |
d9afbd1b TM |
6553 | nfs41_setup_sequence(session, |
6554 | &data->args.seq_args, | |
6555 | &data->res.seq_res, | |
6556 | task); | |
863a3c6c AA |
6557 | } |
6558 | ||
6559 | static void | |
6560 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
6561 | { | |
6562 | struct nfs4_layoutcommit_data *data = calldata; | |
6563 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6564 | ||
6ba7db34 | 6565 | if (!nfs41_sequence_done(task, &data->res.seq_res)) |
863a3c6c AA |
6566 | return; |
6567 | ||
6568 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
6569 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
6570 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
6571 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
6572 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 6573 | task->tk_status = 0; |
e59d27e0 TM |
6574 | break; |
6575 | case 0: | |
863a3c6c AA |
6576 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
6577 | data->res.fattr); | |
e59d27e0 TM |
6578 | break; |
6579 | default: | |
6580 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
6581 | rpc_restart_call_prepare(task); | |
6582 | return; | |
6583 | } | |
6584 | } | |
863a3c6c AA |
6585 | } |
6586 | ||
6587 | static void nfs4_layoutcommit_release(void *calldata) | |
6588 | { | |
6589 | struct nfs4_layoutcommit_data *data = calldata; | |
6590 | ||
db29c089 | 6591 | pnfs_cleanup_layoutcommit(data); |
863a3c6c AA |
6592 | put_rpccred(data->cred); |
6593 | kfree(data); | |
6594 | } | |
6595 | ||
6596 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
6597 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
6598 | .rpc_call_done = nfs4_layoutcommit_done, | |
6599 | .rpc_release = nfs4_layoutcommit_release, | |
6600 | }; | |
6601 | ||
6602 | int | |
ef311537 | 6603 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
6604 | { |
6605 | struct rpc_message msg = { | |
6606 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
6607 | .rpc_argp = &data->args, | |
6608 | .rpc_resp = &data->res, | |
6609 | .rpc_cred = data->cred, | |
6610 | }; | |
6611 | struct rpc_task_setup task_setup_data = { | |
6612 | .task = &data->task, | |
6613 | .rpc_client = NFS_CLIENT(data->args.inode), | |
6614 | .rpc_message = &msg, | |
6615 | .callback_ops = &nfs4_layoutcommit_ops, | |
6616 | .callback_data = data, | |
6617 | .flags = RPC_TASK_ASYNC, | |
6618 | }; | |
6619 | struct rpc_task *task; | |
6620 | int status = 0; | |
6621 | ||
6622 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
6623 | "lbw: %llu inode %lu\n", | |
6624 | data->task.tk_pid, sync, | |
6625 | data->args.lastbytewritten, | |
6626 | data->args.inode->i_ino); | |
6627 | ||
9d12b216 | 6628 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
6629 | task = rpc_run_task(&task_setup_data); |
6630 | if (IS_ERR(task)) | |
6631 | return PTR_ERR(task); | |
ef311537 | 6632 | if (sync == false) |
863a3c6c AA |
6633 | goto out; |
6634 | status = nfs4_wait_for_completion_rpc_task(task); | |
6635 | if (status != 0) | |
6636 | goto out; | |
6637 | status = task->tk_status; | |
6638 | out: | |
6639 | dprintk("%s: status %d\n", __func__, status); | |
6640 | rpc_put_task(task); | |
6641 | return status; | |
6642 | } | |
fca78d6d BS |
6643 | |
6644 | static int | |
6645 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6646 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6647 | { | |
6648 | struct nfs41_secinfo_no_name_args args = { | |
6649 | .style = SECINFO_STYLE_CURRENT_FH, | |
6650 | }; | |
6651 | struct nfs4_secinfo_res res = { | |
6652 | .flavors = flavors, | |
6653 | }; | |
6654 | struct rpc_message msg = { | |
6655 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
6656 | .rpc_argp = &args, | |
6657 | .rpc_resp = &res, | |
6658 | }; | |
6659 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); | |
6660 | } | |
6661 | ||
6662 | static int | |
6663 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6664 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6665 | { | |
6666 | struct nfs4_exception exception = { }; | |
6667 | int err; | |
6668 | do { | |
6669 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6670 | switch (err) { | |
6671 | case 0: | |
6672 | case -NFS4ERR_WRONGSEC: | |
6673 | case -NFS4ERR_NOTSUPP: | |
05e9cfb4 | 6674 | goto out; |
fca78d6d BS |
6675 | default: |
6676 | err = nfs4_handle_exception(server, err, &exception); | |
6677 | } | |
6678 | } while (exception.retry); | |
05e9cfb4 | 6679 | out: |
fca78d6d BS |
6680 | return err; |
6681 | } | |
6682 | ||
6683 | static int | |
6684 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
6685 | struct nfs_fsinfo *info) | |
6686 | { | |
6687 | int err; | |
6688 | struct page *page; | |
6689 | rpc_authflavor_t flavor; | |
6690 | struct nfs4_secinfo_flavors *flavors; | |
6691 | ||
6692 | page = alloc_page(GFP_KERNEL); | |
6693 | if (!page) { | |
6694 | err = -ENOMEM; | |
6695 | goto out; | |
6696 | } | |
6697 | ||
6698 | flavors = page_address(page); | |
6699 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6700 | ||
6701 | /* | |
6702 | * Fall back on "guess and check" method if | |
6703 | * the server doesn't support SECINFO_NO_NAME | |
6704 | */ | |
6705 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
6706 | err = nfs4_find_root_sec(server, fhandle, info); | |
6707 | goto out_freepage; | |
6708 | } | |
6709 | if (err) | |
6710 | goto out_freepage; | |
6711 | ||
6712 | flavor = nfs_find_best_sec(flavors); | |
6713 | if (err == 0) | |
6714 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
6715 | ||
6716 | out_freepage: | |
6717 | put_page(page); | |
6718 | if (err == -EACCES) | |
6719 | return -EPERM; | |
6720 | out: | |
6721 | return err; | |
6722 | } | |
1cab0652 BS |
6723 | |
6724 | static int _nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) | |
7d974794 BS |
6725 | { |
6726 | int status; | |
6727 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 6728 | .stateid = stateid, |
7d974794 BS |
6729 | }; |
6730 | struct nfs41_test_stateid_res res; | |
6731 | struct rpc_message msg = { | |
6732 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
6733 | .rpc_argp = &args, | |
6734 | .rpc_resp = &res, | |
6735 | }; | |
1cab0652 | 6736 | |
38527b15 | 6737 | dprintk("NFS call test_stateid %p\n", stateid); |
9d12b216 | 6738 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
8fe72bac TM |
6739 | nfs4_set_sequence_privileged(&args.seq_args); |
6740 | status = nfs4_call_sync_sequence(server->client, server, &msg, | |
6741 | &args.seq_args, &res.seq_res); | |
38527b15 CL |
6742 | if (status != NFS_OK) { |
6743 | dprintk("NFS reply test_stateid: failed, %d\n", status); | |
377e507d | 6744 | return status; |
38527b15 CL |
6745 | } |
6746 | dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status); | |
377e507d | 6747 | return -res.status; |
7d974794 BS |
6748 | } |
6749 | ||
38527b15 CL |
6750 | /** |
6751 | * nfs41_test_stateid - perform a TEST_STATEID operation | |
6752 | * | |
6753 | * @server: server / transport on which to perform the operation | |
6754 | * @stateid: state ID to test | |
6755 | * | |
6756 | * Returns NFS_OK if the server recognizes that "stateid" is valid. | |
6757 | * Otherwise a negative NFS4ERR value is returned if the operation | |
6758 | * failed or the state ID is not currently valid. | |
6759 | */ | |
1cab0652 | 6760 | static int nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
7d974794 BS |
6761 | { |
6762 | struct nfs4_exception exception = { }; | |
6763 | int err; | |
6764 | do { | |
377e507d CL |
6765 | err = _nfs41_test_stateid(server, stateid); |
6766 | if (err != -NFS4ERR_DELAY) | |
6767 | break; | |
6768 | nfs4_handle_exception(server, err, &exception); | |
7d974794 BS |
6769 | } while (exception.retry); |
6770 | return err; | |
6771 | } | |
9aeda35f | 6772 | |
1cab0652 | 6773 | static int _nfs4_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f | 6774 | { |
9aeda35f | 6775 | struct nfs41_free_stateid_args args = { |
1cab0652 | 6776 | .stateid = stateid, |
9aeda35f BS |
6777 | }; |
6778 | struct nfs41_free_stateid_res res; | |
6779 | struct rpc_message msg = { | |
6780 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
6781 | .rpc_argp = &args, | |
6782 | .rpc_resp = &res, | |
6783 | }; | |
38527b15 | 6784 | int status; |
9aeda35f | 6785 | |
38527b15 | 6786 | dprintk("NFS call free_stateid %p\n", stateid); |
9d12b216 | 6787 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
8fe72bac | 6788 | nfs4_set_sequence_privileged(&args.seq_args); |
38527b15 | 6789 | status = nfs4_call_sync_sequence(server->client, server, &msg, |
8fe72bac | 6790 | &args.seq_args, &res.seq_res); |
38527b15 CL |
6791 | dprintk("NFS reply free_stateid: %d\n", status); |
6792 | return status; | |
9aeda35f BS |
6793 | } |
6794 | ||
38527b15 CL |
6795 | /** |
6796 | * nfs41_free_stateid - perform a FREE_STATEID operation | |
6797 | * | |
6798 | * @server: server / transport on which to perform the operation | |
6799 | * @stateid: state ID to release | |
6800 | * | |
6801 | * Returns NFS_OK if the server freed "stateid". Otherwise a | |
6802 | * negative NFS4ERR value is returned. | |
6803 | */ | |
1cab0652 | 6804 | static int nfs41_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f BS |
6805 | { |
6806 | struct nfs4_exception exception = { }; | |
6807 | int err; | |
6808 | do { | |
377e507d CL |
6809 | err = _nfs4_free_stateid(server, stateid); |
6810 | if (err != -NFS4ERR_DELAY) | |
6811 | break; | |
6812 | nfs4_handle_exception(server, err, &exception); | |
9aeda35f BS |
6813 | } while (exception.retry); |
6814 | return err; | |
6815 | } | |
36281caa TM |
6816 | |
6817 | static bool nfs41_match_stateid(const nfs4_stateid *s1, | |
6818 | const nfs4_stateid *s2) | |
6819 | { | |
2d2f24ad | 6820 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
6821 | return false; |
6822 | ||
2d2f24ad | 6823 | if (s1->seqid == s2->seqid) |
36281caa | 6824 | return true; |
2d2f24ad | 6825 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
6826 | return true; |
6827 | ||
6828 | return false; | |
6829 | } | |
6830 | ||
557134a3 AA |
6831 | #endif /* CONFIG_NFS_V4_1 */ |
6832 | ||
36281caa TM |
6833 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
6834 | const nfs4_stateid *s2) | |
6835 | { | |
f597c537 | 6836 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
6837 | } |
6838 | ||
6839 | ||
17280175 | 6840 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 6841 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 6842 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
6843 | .recover_open = nfs4_open_reclaim, |
6844 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 6845 | .establish_clid = nfs4_init_clientid, |
90a16617 | 6846 | .get_clid_cred = nfs4_get_setclientid_cred, |
05f4c350 | 6847 | .detect_trunking = nfs40_discover_server_trunking, |
1da177e4 LT |
6848 | }; |
6849 | ||
591d71cb | 6850 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 6851 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
6852 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
6853 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
6854 | .recover_open = nfs4_open_reclaim, | |
6855 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 6856 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6857 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 6858 | .reclaim_complete = nfs41_proc_reclaim_complete, |
05f4c350 | 6859 | .detect_trunking = nfs41_discover_server_trunking, |
591d71cb AA |
6860 | }; |
6861 | #endif /* CONFIG_NFS_V4_1 */ | |
6862 | ||
17280175 | 6863 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
6864 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
6865 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
6866 | .recover_open = nfs4_open_expired, | |
6867 | .recover_lock = nfs4_lock_expired, | |
6868 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 6869 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
6870 | }; |
6871 | ||
6872 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 6873 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 6874 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 6875 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
6876 | .recover_open = nfs41_open_expired, |
6877 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 6878 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6879 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 6880 | }; |
591d71cb | 6881 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 6882 | |
17280175 | 6883 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 6884 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 6885 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 6886 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
6887 | }; |
6888 | ||
6889 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 6890 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 6891 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 6892 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 6893 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
6894 | }; |
6895 | #endif | |
6896 | ||
97dc1359 TM |
6897 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
6898 | .minor_version = 0, | |
39c6daae TM |
6899 | .init_caps = NFS_CAP_READDIRPLUS |
6900 | | NFS_CAP_ATOMIC_OPEN | |
6901 | | NFS_CAP_CHANGE_ATTR | |
6902 | | NFS_CAP_POSIX_LOCK, | |
97dc1359 | 6903 | .call_sync = _nfs4_call_sync, |
36281caa | 6904 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 6905 | .find_root_sec = nfs4_find_root_sec, |
c48f4f35 TM |
6906 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
6907 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
6908 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
6909 | }; |
6910 | ||
6911 | #if defined(CONFIG_NFS_V4_1) | |
6912 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
6913 | .minor_version = 1, | |
39c6daae TM |
6914 | .init_caps = NFS_CAP_READDIRPLUS |
6915 | | NFS_CAP_ATOMIC_OPEN | |
6916 | | NFS_CAP_CHANGE_ATTR | |
3b66486c | 6917 | | NFS_CAP_POSIX_LOCK |
49f9a0fa TM |
6918 | | NFS_CAP_STATEID_NFSV41 |
6919 | | NFS_CAP_ATOMIC_OPEN_V1, | |
104287cd | 6920 | .call_sync = nfs4_call_sync_sequence, |
36281caa | 6921 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 6922 | .find_root_sec = nfs41_find_root_sec, |
c48f4f35 TM |
6923 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
6924 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
6925 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
6926 | }; |
6927 | #endif | |
6928 | ||
97dc1359 TM |
6929 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
6930 | [0] = &nfs_v4_0_minor_ops, | |
6931 | #if defined(CONFIG_NFS_V4_1) | |
6932 | [1] = &nfs_v4_1_minor_ops, | |
6933 | #endif | |
6934 | }; | |
6935 | ||
73a79706 BS |
6936 | const struct inode_operations nfs4_dir_inode_operations = { |
6937 | .create = nfs_create, | |
6938 | .lookup = nfs_lookup, | |
6939 | .atomic_open = nfs_atomic_open, | |
6940 | .link = nfs_link, | |
6941 | .unlink = nfs_unlink, | |
6942 | .symlink = nfs_symlink, | |
6943 | .mkdir = nfs_mkdir, | |
6944 | .rmdir = nfs_rmdir, | |
6945 | .mknod = nfs_mknod, | |
6946 | .rename = nfs_rename, | |
6947 | .permission = nfs_permission, | |
6948 | .getattr = nfs_getattr, | |
6949 | .setattr = nfs_setattr, | |
6950 | .getxattr = generic_getxattr, | |
6951 | .setxattr = generic_setxattr, | |
6952 | .listxattr = generic_listxattr, | |
6953 | .removexattr = generic_removexattr, | |
6954 | }; | |
6955 | ||
92e1d5be | 6956 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
6957 | .permission = nfs_permission, |
6958 | .getattr = nfs_getattr, | |
6959 | .setattr = nfs_setattr, | |
64c2ce8b AK |
6960 | .getxattr = generic_getxattr, |
6961 | .setxattr = generic_setxattr, | |
6962 | .listxattr = generic_listxattr, | |
6963 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
6964 | }; |
6965 | ||
509de811 | 6966 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
6967 | .version = 4, /* protocol version */ |
6968 | .dentry_ops = &nfs4_dentry_operations, | |
6969 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 6970 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 6971 | .file_ops = &nfs4_file_operations, |
1da177e4 | 6972 | .getroot = nfs4_proc_get_root, |
281cad46 | 6973 | .submount = nfs4_submount, |
ff9099f2 | 6974 | .try_mount = nfs4_try_mount, |
1da177e4 LT |
6975 | .getattr = nfs4_proc_getattr, |
6976 | .setattr = nfs4_proc_setattr, | |
6977 | .lookup = nfs4_proc_lookup, | |
6978 | .access = nfs4_proc_access, | |
6979 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
6980 | .create = nfs4_proc_create, |
6981 | .remove = nfs4_proc_remove, | |
6982 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 6983 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 LT |
6984 | .unlink_done = nfs4_proc_unlink_done, |
6985 | .rename = nfs4_proc_rename, | |
d3d4152a | 6986 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 6987 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 6988 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
6989 | .link = nfs4_proc_link, |
6990 | .symlink = nfs4_proc_symlink, | |
6991 | .mkdir = nfs4_proc_mkdir, | |
6992 | .rmdir = nfs4_proc_remove, | |
6993 | .readdir = nfs4_proc_readdir, | |
6994 | .mknod = nfs4_proc_mknod, | |
6995 | .statfs = nfs4_proc_statfs, | |
6996 | .fsinfo = nfs4_proc_fsinfo, | |
6997 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 6998 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
6999 | .decode_dirent = nfs4_decode_dirent, |
7000 | .read_setup = nfs4_proc_read_setup, | |
1abb5088 | 7001 | .read_pageio_init = pnfs_pageio_init_read, |
ea7c3303 | 7002 | .read_rpc_prepare = nfs4_proc_read_rpc_prepare, |
ec06c096 | 7003 | .read_done = nfs4_read_done, |
1da177e4 | 7004 | .write_setup = nfs4_proc_write_setup, |
57208fa7 | 7005 | .write_pageio_init = pnfs_pageio_init_write, |
c6cb80d0 | 7006 | .write_rpc_prepare = nfs4_proc_write_rpc_prepare, |
788e7a89 | 7007 | .write_done = nfs4_write_done, |
1da177e4 | 7008 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 7009 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 7010 | .commit_done = nfs4_commit_done, |
1da177e4 | 7011 | .lock = nfs4_proc_lock, |
e50a1c2e | 7012 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 7013 | .close_context = nfs4_close_context, |
2b484297 | 7014 | .open_context = nfs4_atomic_open, |
011e2a7f | 7015 | .have_delegation = nfs4_have_delegation, |
57ec14c5 | 7016 | .return_delegation = nfs4_inode_return_delegation, |
6663ee7f | 7017 | .alloc_client = nfs4_alloc_client, |
45a52a02 | 7018 | .init_client = nfs4_init_client, |
cdb7eced | 7019 | .free_client = nfs4_free_client, |
1179acc6 BS |
7020 | .create_server = nfs4_create_server, |
7021 | .clone_server = nfs_clone_server, | |
1da177e4 LT |
7022 | }; |
7023 | ||
64c2ce8b AK |
7024 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
7025 | .prefix = XATTR_NAME_NFSV4_ACL, | |
7026 | .list = nfs4_xattr_list_nfs4_acl, | |
7027 | .get = nfs4_xattr_get_nfs4_acl, | |
7028 | .set = nfs4_xattr_set_nfs4_acl, | |
7029 | }; | |
7030 | ||
7031 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
7032 | &nfs4_xattr_nfs4_acl_handler, | |
7033 | NULL | |
7034 | }; | |
7035 | ||
1da177e4 LT |
7036 | /* |
7037 | * Local variables: | |
7038 | * c-basic-offset: 8 | |
7039 | * End: | |
7040 | */ |