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 | ||
801a16dc | 2517 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2518 | struct nfs_fsinfo *info) |
1da177e4 | 2519 | { |
8f70e95f | 2520 | int i, len, status = 0; |
0fabee24 | 2521 | rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS]; |
1da177e4 | 2522 | |
6a1a1e34 | 2523 | len = rpcauth_list_flavors(flav_array, ARRAY_SIZE(flav_array)); |
4ea8fed5 TM |
2524 | if (len < 0) |
2525 | return len; | |
8f70e95f BS |
2526 | |
2527 | for (i = 0; i < len; i++) { | |
6a1a1e34 CL |
2528 | /* AUTH_UNIX is the default flavor if none was specified, |
2529 | * thus has already been tried. */ | |
2530 | if (flav_array[i] == RPC_AUTH_UNIX) | |
2531 | continue; | |
2532 | ||
8f70e95f | 2533 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); |
fb8a5ba8 | 2534 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2535 | continue; |
2536 | break; | |
8f70e95f | 2537 | } |
fb8a5ba8 BS |
2538 | /* |
2539 | * -EACCESS could mean that the user doesn't have correct permissions | |
2540 | * to access the mount. It could also mean that we tried to mount | |
2541 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2542 | * existing mount programs don't handle -EACCES very well so it should | |
2543 | * be mapped to -EPERM instead. | |
2544 | */ | |
2545 | if (status == -EACCES) | |
2546 | status = -EPERM; | |
801a16dc BS |
2547 | return status; |
2548 | } | |
2549 | ||
2ed4b95b CL |
2550 | static int nfs4_do_find_root_sec(struct nfs_server *server, |
2551 | struct nfs_fh *fhandle, struct nfs_fsinfo *info) | |
2552 | { | |
2553 | int mv = server->nfs_client->cl_minorversion; | |
2554 | return nfs_v4_minor_ops[mv]->find_root_sec(server, fhandle, info); | |
2555 | } | |
2556 | ||
2557 | /** | |
2558 | * nfs4_proc_get_rootfh - get file handle for server's pseudoroot | |
2559 | * @server: initialized nfs_server handle | |
2560 | * @fhandle: we fill in the pseudo-fs root file handle | |
2561 | * @info: we fill in an FSINFO struct | |
2562 | * | |
2563 | * Returns zero on success, or a negative errno. | |
801a16dc | 2564 | */ |
3028eb2b BS |
2565 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
2566 | struct nfs_fsinfo *info) | |
801a16dc | 2567 | { |
2ed4b95b CL |
2568 | int status; |
2569 | ||
2570 | status = nfs4_lookup_root(server, fhandle, info); | |
2571 | if ((status == -NFS4ERR_WRONGSEC) && | |
2572 | !(server->flags & NFS_MOUNT_SECFLAVOUR)) | |
2573 | status = nfs4_do_find_root_sec(server, fhandle, info); | |
2574 | ||
1da177e4 LT |
2575 | if (status == 0) |
2576 | status = nfs4_server_capabilities(server, fhandle); | |
2577 | if (status == 0) | |
2578 | status = nfs4_do_fsinfo(server, fhandle, info); | |
2ed4b95b | 2579 | |
c12e87f4 | 2580 | return nfs4_map_errors(status); |
1da177e4 LT |
2581 | } |
2582 | ||
bae36241 BS |
2583 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
2584 | struct nfs_fsinfo *info) | |
2585 | { | |
2586 | int error; | |
2587 | struct nfs_fattr *fattr = info->fattr; | |
2588 | ||
2589 | error = nfs4_server_capabilities(server, mntfh); | |
2590 | if (error < 0) { | |
2591 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
2592 | return error; | |
2593 | } | |
2594 | ||
2595 | error = nfs4_proc_getattr(server, mntfh, fattr); | |
2596 | if (error < 0) { | |
2597 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
2598 | return error; | |
2599 | } | |
2600 | ||
2601 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
2602 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
2603 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
2604 | ||
2605 | return error; | |
2606 | } | |
2607 | ||
6b97fd3d MN |
2608 | /* |
2609 | * Get locations and (maybe) other attributes of a referral. | |
2610 | * Note that we'll actually follow the referral later when | |
2611 | * we detect fsid mismatch in inode revalidation | |
2612 | */ | |
f05d147f BS |
2613 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
2614 | const struct qstr *name, struct nfs_fattr *fattr, | |
2615 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
2616 | { |
2617 | int status = -ENOMEM; | |
2618 | struct page *page = NULL; | |
2619 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2620 | |
2621 | page = alloc_page(GFP_KERNEL); | |
2622 | if (page == NULL) | |
2623 | goto out; | |
2624 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2625 | if (locations == NULL) | |
2626 | goto out; | |
2627 | ||
f05d147f | 2628 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
2629 | if (status != 0) |
2630 | goto out; | |
2631 | /* Make sure server returned a different fsid for the referral */ | |
2632 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2633 | dprintk("%s: server did not return a different fsid for" |
2634 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2635 | status = -EIO; |
2636 | goto out; | |
2637 | } | |
533eb461 AA |
2638 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2639 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2640 | |
533eb461 | 2641 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2642 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2643 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2644 | out: | |
2645 | if (page) | |
2646 | __free_page(page); | |
5d7ca35a | 2647 | kfree(locations); |
6b97fd3d MN |
2648 | return status; |
2649 | } | |
2650 | ||
1da177e4 LT |
2651 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2652 | { | |
2653 | struct nfs4_getattr_arg args = { | |
2654 | .fh = fhandle, | |
2655 | .bitmask = server->attr_bitmask, | |
2656 | }; | |
2657 | struct nfs4_getattr_res res = { | |
2658 | .fattr = fattr, | |
2659 | .server = server, | |
2660 | }; | |
2661 | struct rpc_message msg = { | |
2662 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2663 | .rpc_argp = &args, | |
2664 | .rpc_resp = &res, | |
2665 | }; | |
2666 | ||
0e574af1 | 2667 | nfs_fattr_init(fattr); |
7c513058 | 2668 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2669 | } |
2670 | ||
2671 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2672 | { | |
2673 | struct nfs4_exception exception = { }; | |
2674 | int err; | |
2675 | do { | |
2676 | err = nfs4_handle_exception(server, | |
2677 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2678 | &exception); | |
2679 | } while (exception.retry); | |
2680 | return err; | |
2681 | } | |
2682 | ||
2683 | /* | |
2684 | * The file is not closed if it is opened due to the a request to change | |
2685 | * the size of the file. The open call will not be needed once the | |
2686 | * VFS layer lookup-intents are implemented. | |
2687 | * | |
2688 | * Close is called when the inode is destroyed. | |
2689 | * If we haven't opened the file for O_WRONLY, we | |
2690 | * need to in the size_change case to obtain a stateid. | |
2691 | * | |
2692 | * Got race? | |
2693 | * Because OPEN is always done by name in nfsv4, it is | |
2694 | * possible that we opened a different file by the same | |
2695 | * name. We can recognize this race condition, but we | |
2696 | * can't do anything about it besides returning an error. | |
2697 | * | |
2698 | * This will be fixed with VFS changes (lookup-intent). | |
2699 | */ | |
2700 | static int | |
2701 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2702 | struct iattr *sattr) | |
2703 | { | |
08e9eac4 | 2704 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2705 | struct rpc_cred *cred = NULL; |
d530838b | 2706 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2707 | int status; |
2708 | ||
8a1636c4 | 2709 | if (pnfs_ld_layoutret_on_setattr(inode)) |
24028672 | 2710 | pnfs_commit_and_return_layout(inode); |
8a1636c4 | 2711 | |
0e574af1 | 2712 | nfs_fattr_init(fattr); |
1da177e4 | 2713 | |
2669940d AA |
2714 | /* Deal with open(O_TRUNC) */ |
2715 | if (sattr->ia_valid & ATTR_OPEN) | |
2716 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME|ATTR_OPEN); | |
2717 | ||
2718 | /* Optimization: if the end result is no change, don't RPC */ | |
2719 | if ((sattr->ia_valid & ~(ATTR_FILE)) == 0) | |
2720 | return 0; | |
2721 | ||
d530838b | 2722 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2723 | if (sattr->ia_valid & ATTR_FILE) { |
2724 | struct nfs_open_context *ctx; | |
2725 | ||
2726 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2727 | if (ctx) { |
2728 | cred = ctx->cred; | |
2729 | state = ctx->state; | |
2730 | } | |
659bfcd6 | 2731 | } |
08e9eac4 | 2732 | |
659bfcd6 | 2733 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2734 | if (status == 0) |
2735 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2736 | return status; |
2737 | } | |
2738 | ||
0c2e53f1 TM |
2739 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
2740 | const struct qstr *name, struct nfs_fh *fhandle, | |
2741 | struct nfs_fattr *fattr) | |
2b3de441 | 2742 | { |
0c2e53f1 | 2743 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
2744 | int status; |
2745 | struct nfs4_lookup_arg args = { | |
2746 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 2747 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
2748 | .name = name, |
2749 | }; | |
2750 | struct nfs4_lookup_res res = { | |
2751 | .server = server, | |
2752 | .fattr = fattr, | |
2753 | .fh = fhandle, | |
2754 | }; | |
2755 | struct rpc_message msg = { | |
2756 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2757 | .rpc_argp = &args, | |
2758 | .rpc_resp = &res, | |
2759 | }; | |
2760 | ||
2761 | nfs_fattr_init(fattr); | |
2762 | ||
1da177e4 | 2763 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 2764 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2765 | dprintk("NFS reply lookup: %d\n", status); |
2766 | return status; | |
2767 | } | |
2768 | ||
72de53ec | 2769 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 2770 | { |
7ebb9315 | 2771 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 2772 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
2773 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
2774 | fattr->nlink = 2; | |
2775 | } | |
2776 | ||
72de53ec BS |
2777 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
2778 | struct qstr *name, struct nfs_fh *fhandle, | |
2779 | struct nfs_fattr *fattr) | |
1da177e4 LT |
2780 | { |
2781 | struct nfs4_exception exception = { }; | |
72de53ec | 2782 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
2783 | int err; |
2784 | do { | |
72de53ec BS |
2785 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr); |
2786 | switch (err) { | |
08ef7bd3 | 2787 | case -NFS4ERR_BADNAME: |
72de53ec BS |
2788 | err = -ENOENT; |
2789 | goto out; | |
0c2e53f1 | 2790 | case -NFS4ERR_MOVED: |
f05d147f | 2791 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
72de53ec | 2792 | goto out; |
0c2e53f1 | 2793 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
2794 | err = -EPERM; |
2795 | if (client != *clnt) | |
2796 | goto out; | |
2797 | ||
2798 | client = nfs4_create_sec_client(client, dir, name); | |
2799 | if (IS_ERR(client)) | |
2800 | return PTR_ERR(client); | |
2801 | ||
2802 | exception.retry = 1; | |
2803 | break; | |
2804 | default: | |
2805 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 2806 | } |
1da177e4 | 2807 | } while (exception.retry); |
72de53ec BS |
2808 | |
2809 | out: | |
2810 | if (err == 0) | |
2811 | *clnt = client; | |
2812 | else if (client != *clnt) | |
2813 | rpc_shutdown_client(client); | |
2814 | ||
1da177e4 LT |
2815 | return err; |
2816 | } | |
2817 | ||
80a16b21 | 2818 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, |
72de53ec BS |
2819 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2820 | { | |
2821 | int status; | |
2822 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
2823 | ||
2824 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2825 | if (client != NFS_CLIENT(dir)) { | |
2826 | rpc_shutdown_client(client); | |
2827 | nfs_fixup_secinfo_attributes(fattr); | |
2828 | } | |
2829 | return status; | |
2830 | } | |
2831 | ||
f05d147f BS |
2832 | struct rpc_clnt * |
2833 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, | |
2834 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2835 | { | |
2836 | int status; | |
2837 | struct rpc_clnt *client = rpc_clone_client(NFS_CLIENT(dir)); | |
2838 | ||
2839 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2840 | if (status < 0) { | |
2841 | rpc_shutdown_client(client); | |
2842 | return ERR_PTR(status); | |
2843 | } | |
2844 | return client; | |
2845 | } | |
2846 | ||
1da177e4 LT |
2847 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
2848 | { | |
76b32999 | 2849 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2850 | struct nfs4_accessargs args = { |
2851 | .fh = NFS_FH(inode), | |
a4980e78 | 2852 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
2853 | }; |
2854 | struct nfs4_accessres res = { | |
2855 | .server = server, | |
1da177e4 | 2856 | }; |
1da177e4 LT |
2857 | struct rpc_message msg = { |
2858 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2859 | .rpc_argp = &args, | |
2860 | .rpc_resp = &res, | |
2861 | .rpc_cred = entry->cred, | |
2862 | }; | |
2863 | int mode = entry->mask; | |
2864 | int status; | |
2865 | ||
2866 | /* | |
2867 | * Determine which access bits we want to ask for... | |
2868 | */ | |
2869 | if (mode & MAY_READ) | |
2870 | args.access |= NFS4_ACCESS_READ; | |
2871 | if (S_ISDIR(inode->i_mode)) { | |
2872 | if (mode & MAY_WRITE) | |
2873 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2874 | if (mode & MAY_EXEC) | |
2875 | args.access |= NFS4_ACCESS_LOOKUP; | |
2876 | } else { | |
2877 | if (mode & MAY_WRITE) | |
2878 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2879 | if (mode & MAY_EXEC) | |
2880 | args.access |= NFS4_ACCESS_EXECUTE; | |
2881 | } | |
c407d41a TM |
2882 | |
2883 | res.fattr = nfs_alloc_fattr(); | |
2884 | if (res.fattr == NULL) | |
2885 | return -ENOMEM; | |
2886 | ||
7c513058 | 2887 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 2888 | if (!status) { |
6168f62c | 2889 | nfs_access_set_mask(entry, res.access); |
c407d41a | 2890 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2891 | } |
c407d41a | 2892 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2893 | return status; |
2894 | } | |
2895 | ||
2896 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2897 | { | |
2898 | struct nfs4_exception exception = { }; | |
2899 | int err; | |
2900 | do { | |
2901 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2902 | _nfs4_proc_access(inode, entry), | |
2903 | &exception); | |
2904 | } while (exception.retry); | |
2905 | return err; | |
2906 | } | |
2907 | ||
2908 | /* | |
2909 | * TODO: For the time being, we don't try to get any attributes | |
2910 | * along with any of the zero-copy operations READ, READDIR, | |
2911 | * READLINK, WRITE. | |
2912 | * | |
2913 | * In the case of the first three, we want to put the GETATTR | |
2914 | * after the read-type operation -- this is because it is hard | |
2915 | * to predict the length of a GETATTR response in v4, and thus | |
2916 | * align the READ data correctly. This means that the GETATTR | |
2917 | * may end up partially falling into the page cache, and we should | |
2918 | * shift it into the 'tail' of the xdr_buf before processing. | |
2919 | * To do this efficiently, we need to know the total length | |
2920 | * of data received, which doesn't seem to be available outside | |
2921 | * of the RPC layer. | |
2922 | * | |
2923 | * In the case of WRITE, we also want to put the GETATTR after | |
2924 | * the operation -- in this case because we want to make sure | |
140150db | 2925 | * we get the post-operation mtime and size. |
1da177e4 LT |
2926 | * |
2927 | * Both of these changes to the XDR layer would in fact be quite | |
2928 | * minor, but I decided to leave them for a subsequent patch. | |
2929 | */ | |
2930 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2931 | unsigned int pgbase, unsigned int pglen) | |
2932 | { | |
2933 | struct nfs4_readlink args = { | |
2934 | .fh = NFS_FH(inode), | |
2935 | .pgbase = pgbase, | |
2936 | .pglen = pglen, | |
2937 | .pages = &page, | |
2938 | }; | |
f50c7000 | 2939 | struct nfs4_readlink_res res; |
1da177e4 LT |
2940 | struct rpc_message msg = { |
2941 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2942 | .rpc_argp = &args, | |
f50c7000 | 2943 | .rpc_resp = &res, |
1da177e4 LT |
2944 | }; |
2945 | ||
7c513058 | 2946 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2947 | } |
2948 | ||
2949 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2950 | unsigned int pgbase, unsigned int pglen) | |
2951 | { | |
2952 | struct nfs4_exception exception = { }; | |
2953 | int err; | |
2954 | do { | |
2955 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2956 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2957 | &exception); | |
2958 | } while (exception.retry); | |
2959 | return err; | |
2960 | } | |
2961 | ||
1da177e4 | 2962 | /* |
8867fe58 | 2963 | * This is just for mknod. open(O_CREAT) will always do ->open_context(). |
1da177e4 | 2964 | */ |
1da177e4 LT |
2965 | static int |
2966 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 2967 | int flags) |
1da177e4 | 2968 | { |
8867fe58 | 2969 | struct nfs_open_context *ctx; |
1da177e4 | 2970 | struct nfs4_state *state; |
1da177e4 LT |
2971 | int status = 0; |
2972 | ||
8867fe58 MS |
2973 | ctx = alloc_nfs_open_context(dentry, FMODE_READ); |
2974 | if (IS_ERR(ctx)) | |
2975 | return PTR_ERR(ctx); | |
2976 | ||
a8a5da99 | 2977 | sattr->ia_mode &= ~current_umask(); |
8626e4a4 TM |
2978 | state = nfs4_do_open(dir, dentry, ctx->mode, |
2979 | flags, sattr, ctx->cred, | |
2980 | &ctx->mdsthreshold); | |
d4d9cdcb | 2981 | d_drop(dentry); |
1da177e4 LT |
2982 | if (IS_ERR(state)) { |
2983 | status = PTR_ERR(state); | |
c0204fd2 | 2984 | goto out; |
1da177e4 | 2985 | } |
d4d9cdcb | 2986 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2987 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
8867fe58 | 2988 | ctx->state = state; |
1da177e4 | 2989 | out: |
8867fe58 | 2990 | put_nfs_open_context(ctx); |
1da177e4 LT |
2991 | return status; |
2992 | } | |
2993 | ||
2994 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2995 | { | |
16e42959 | 2996 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2997 | struct nfs_removeargs args = { |
1da177e4 | 2998 | .fh = NFS_FH(dir), |
26fe5750 | 2999 | .name = *name, |
16e42959 | 3000 | }; |
4fdc17b2 | 3001 | struct nfs_removeres res = { |
16e42959 | 3002 | .server = server, |
1da177e4 | 3003 | }; |
1da177e4 | 3004 | struct rpc_message msg = { |
4fdc17b2 TM |
3005 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
3006 | .rpc_argp = &args, | |
3007 | .rpc_resp = &res, | |
1da177e4 | 3008 | }; |
778d2817 | 3009 | int status; |
1da177e4 | 3010 | |
7c513058 | 3011 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 3012 | if (status == 0) |
16e42959 | 3013 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
3014 | return status; |
3015 | } | |
3016 | ||
3017 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3018 | { | |
3019 | struct nfs4_exception exception = { }; | |
3020 | int err; | |
3021 | do { | |
3022 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3023 | _nfs4_proc_remove(dir, name), | |
3024 | &exception); | |
3025 | } while (exception.retry); | |
3026 | return err; | |
3027 | } | |
3028 | ||
e4eff1a6 | 3029 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 3030 | { |
e4eff1a6 TM |
3031 | struct nfs_server *server = NFS_SERVER(dir); |
3032 | struct nfs_removeargs *args = msg->rpc_argp; | |
3033 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 3034 | |
e4eff1a6 | 3035 | res->server = server; |
1da177e4 | 3036 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
9d12b216 | 3037 | nfs41_init_sequence(&args->seq_args, &res->seq_res, 1); |
1da177e4 LT |
3038 | } |
3039 | ||
34e137cc BS |
3040 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
3041 | { | |
d9afbd1b TM |
3042 | nfs4_setup_sequence(NFS_SERVER(data->dir), |
3043 | &data->args.seq_args, | |
3044 | &data->res.seq_res, | |
3045 | task); | |
1da177e4 LT |
3046 | } |
3047 | ||
e4eff1a6 | 3048 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 3049 | { |
e4eff1a6 TM |
3050 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
3051 | ||
14516c3a TM |
3052 | if (!nfs4_sequence_done(task, &res->seq_res)) |
3053 | return 0; | |
9e33bed5 | 3054 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
3055 | return 0; |
3056 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 3057 | return 1; |
1da177e4 LT |
3058 | } |
3059 | ||
d3d4152a JL |
3060 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
3061 | { | |
3062 | struct nfs_server *server = NFS_SERVER(dir); | |
3063 | struct nfs_renameargs *arg = msg->rpc_argp; | |
3064 | struct nfs_renameres *res = msg->rpc_resp; | |
3065 | ||
3066 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 3067 | res->server = server; |
9d12b216 | 3068 | nfs41_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
3069 | } |
3070 | ||
c6bfa1a1 BS |
3071 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
3072 | { | |
d9afbd1b TM |
3073 | nfs4_setup_sequence(NFS_SERVER(data->old_dir), |
3074 | &data->args.seq_args, | |
3075 | &data->res.seq_res, | |
3076 | task); | |
d3d4152a JL |
3077 | } |
3078 | ||
3079 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
3080 | struct inode *new_dir) | |
3081 | { | |
3082 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
3083 | ||
3084 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
3085 | return 0; | |
3086 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
3087 | return 0; | |
3088 | ||
3089 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 3090 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
3091 | return 1; |
3092 | } | |
3093 | ||
1da177e4 LT |
3094 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
3095 | struct inode *new_dir, struct qstr *new_name) | |
3096 | { | |
6caf2c82 | 3097 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 3098 | struct nfs_renameargs arg = { |
1da177e4 LT |
3099 | .old_dir = NFS_FH(old_dir), |
3100 | .new_dir = NFS_FH(new_dir), | |
3101 | .old_name = old_name, | |
3102 | .new_name = new_name, | |
6caf2c82 | 3103 | }; |
e8582a8b | 3104 | struct nfs_renameres res = { |
6caf2c82 | 3105 | .server = server, |
1da177e4 | 3106 | }; |
1da177e4 LT |
3107 | struct rpc_message msg = { |
3108 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
3109 | .rpc_argp = &arg, | |
3110 | .rpc_resp = &res, | |
3111 | }; | |
011fff72 | 3112 | int status = -ENOMEM; |
1da177e4 | 3113 | |
7c513058 | 3114 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
3115 | if (!status) { |
3116 | update_changeattr(old_dir, &res.old_cinfo); | |
3117 | update_changeattr(new_dir, &res.new_cinfo); | |
3118 | } | |
3119 | return status; | |
3120 | } | |
3121 | ||
3122 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
3123 | struct inode *new_dir, struct qstr *new_name) | |
3124 | { | |
3125 | struct nfs4_exception exception = { }; | |
3126 | int err; | |
3127 | do { | |
3128 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
3129 | _nfs4_proc_rename(old_dir, old_name, | |
3130 | new_dir, new_name), | |
3131 | &exception); | |
3132 | } while (exception.retry); | |
3133 | return err; | |
3134 | } | |
3135 | ||
3136 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3137 | { | |
91ba2eee | 3138 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3139 | struct nfs4_link_arg arg = { |
3140 | .fh = NFS_FH(inode), | |
3141 | .dir_fh = NFS_FH(dir), | |
3142 | .name = name, | |
91ba2eee TM |
3143 | .bitmask = server->attr_bitmask, |
3144 | }; | |
91ba2eee TM |
3145 | struct nfs4_link_res res = { |
3146 | .server = server, | |
1da177e4 | 3147 | }; |
1da177e4 LT |
3148 | struct rpc_message msg = { |
3149 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
3150 | .rpc_argp = &arg, | |
91ba2eee | 3151 | .rpc_resp = &res, |
1da177e4 | 3152 | }; |
136f2627 TM |
3153 | int status = -ENOMEM; |
3154 | ||
3155 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 3156 | if (res.fattr == NULL) |
136f2627 | 3157 | goto out; |
1da177e4 | 3158 | |
7c513058 | 3159 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
3160 | if (!status) { |
3161 | update_changeattr(dir, &res.cinfo); | |
73a3d07c | 3162 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 3163 | } |
136f2627 | 3164 | out: |
136f2627 | 3165 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3166 | return status; |
3167 | } | |
3168 | ||
3169 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3170 | { | |
3171 | struct nfs4_exception exception = { }; | |
3172 | int err; | |
3173 | do { | |
3174 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3175 | _nfs4_proc_link(inode, dir, name), | |
3176 | &exception); | |
3177 | } while (exception.retry); | |
3178 | return err; | |
3179 | } | |
3180 | ||
57dc9a57 TM |
3181 | struct nfs4_createdata { |
3182 | struct rpc_message msg; | |
3183 | struct nfs4_create_arg arg; | |
3184 | struct nfs4_create_res res; | |
3185 | struct nfs_fh fh; | |
3186 | struct nfs_fattr fattr; | |
57dc9a57 TM |
3187 | }; |
3188 | ||
3189 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
3190 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
3191 | { | |
3192 | struct nfs4_createdata *data; | |
3193 | ||
3194 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3195 | if (data != NULL) { | |
3196 | struct nfs_server *server = NFS_SERVER(dir); | |
3197 | ||
3198 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
3199 | data->msg.rpc_argp = &data->arg; | |
3200 | data->msg.rpc_resp = &data->res; | |
3201 | data->arg.dir_fh = NFS_FH(dir); | |
3202 | data->arg.server = server; | |
3203 | data->arg.name = name; | |
3204 | data->arg.attrs = sattr; | |
3205 | data->arg.ftype = ftype; | |
3206 | data->arg.bitmask = server->attr_bitmask; | |
3207 | data->res.server = server; | |
3208 | data->res.fh = &data->fh; | |
3209 | data->res.fattr = &data->fattr; | |
57dc9a57 | 3210 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
3211 | } |
3212 | return data; | |
3213 | } | |
3214 | ||
3215 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3216 | { | |
7c513058 | 3217 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3218 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3219 | if (status == 0) { |
3220 | update_changeattr(dir, &data->res.dir_cinfo); | |
57dc9a57 TM |
3221 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); |
3222 | } | |
3223 | return status; | |
3224 | } | |
3225 | ||
3226 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3227 | { | |
3228 | kfree(data); | |
3229 | } | |
3230 | ||
4f390c15 | 3231 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3232 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 3233 | { |
57dc9a57 TM |
3234 | struct nfs4_createdata *data; |
3235 | int status = -ENAMETOOLONG; | |
1da177e4 | 3236 | |
94a6d753 | 3237 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 3238 | goto out; |
4f390c15 | 3239 | |
57dc9a57 TM |
3240 | status = -ENOMEM; |
3241 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
3242 | if (data == NULL) | |
3243 | goto out; | |
3244 | ||
3245 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
3246 | data->arg.u.symlink.pages = &page; | |
3247 | data->arg.u.symlink.len = len; | |
1da177e4 | 3248 | |
57dc9a57 TM |
3249 | status = nfs4_do_create(dir, dentry, data); |
3250 | ||
3251 | nfs4_free_createdata(data); | |
3252 | out: | |
1da177e4 LT |
3253 | return status; |
3254 | } | |
3255 | ||
4f390c15 | 3256 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3257 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
3258 | { |
3259 | struct nfs4_exception exception = { }; | |
3260 | int err; | |
3261 | do { | |
3262 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
3263 | _nfs4_proc_symlink(dir, dentry, page, |
3264 | len, sattr), | |
1da177e4 LT |
3265 | &exception); |
3266 | } while (exception.retry); | |
3267 | return err; | |
3268 | } | |
3269 | ||
3270 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3271 | struct iattr *sattr) | |
3272 | { | |
57dc9a57 TM |
3273 | struct nfs4_createdata *data; |
3274 | int status = -ENOMEM; | |
1da177e4 | 3275 | |
57dc9a57 TM |
3276 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3277 | if (data == NULL) | |
3278 | goto out; | |
3279 | ||
3280 | status = nfs4_do_create(dir, dentry, data); | |
3281 | ||
3282 | nfs4_free_createdata(data); | |
3283 | out: | |
1da177e4 LT |
3284 | return status; |
3285 | } | |
3286 | ||
3287 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3288 | struct iattr *sattr) | |
3289 | { | |
3290 | struct nfs4_exception exception = { }; | |
3291 | int err; | |
a8a5da99 AK |
3292 | |
3293 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3294 | do { |
3295 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3296 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
3297 | &exception); | |
3298 | } while (exception.retry); | |
3299 | return err; | |
3300 | } | |
3301 | ||
3302 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3303 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3304 | { |
3305 | struct inode *dir = dentry->d_inode; | |
3306 | struct nfs4_readdir_arg args = { | |
3307 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3308 | .pages = pages, |
1da177e4 LT |
3309 | .pgbase = 0, |
3310 | .count = count, | |
96d25e53 | 3311 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3312 | .plus = plus, |
1da177e4 LT |
3313 | }; |
3314 | struct nfs4_readdir_res res; | |
3315 | struct rpc_message msg = { | |
3316 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3317 | .rpc_argp = &args, | |
3318 | .rpc_resp = &res, | |
3319 | .rpc_cred = cred, | |
3320 | }; | |
3321 | int status; | |
3322 | ||
3110ff80 | 3323 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
3324 | dentry->d_parent->d_name.name, |
3325 | dentry->d_name.name, | |
3326 | (unsigned long long)cookie); | |
c3f52af3 | 3327 | nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args); |
1da177e4 | 3328 | res.pgbase = args.pgbase; |
7c513058 | 3329 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3330 | if (status >= 0) { |
c3f52af3 | 3331 | memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3332 | status += args.pgbase; |
3333 | } | |
c4812998 TM |
3334 | |
3335 | nfs_invalidate_atime(dir); | |
3336 | ||
3110ff80 | 3337 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3338 | return status; |
3339 | } | |
3340 | ||
3341 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3342 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3343 | { |
3344 | struct nfs4_exception exception = { }; | |
3345 | int err; | |
3346 | do { | |
3347 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
3348 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 3349 | pages, count, plus), |
1da177e4 LT |
3350 | &exception); |
3351 | } while (exception.retry); | |
3352 | return err; | |
3353 | } | |
3354 | ||
3355 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3356 | struct iattr *sattr, dev_t rdev) | |
3357 | { | |
57dc9a57 TM |
3358 | struct nfs4_createdata *data; |
3359 | int mode = sattr->ia_mode; | |
3360 | int status = -ENOMEM; | |
1da177e4 | 3361 | |
57dc9a57 TM |
3362 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); |
3363 | if (data == NULL) | |
3364 | goto out; | |
3365 | ||
1da177e4 | 3366 | if (S_ISFIFO(mode)) |
57dc9a57 | 3367 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3368 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3369 | data->arg.ftype = NF4BLK; |
3370 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3371 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3372 | } |
3373 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3374 | data->arg.ftype = NF4CHR; |
3375 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3376 | data->arg.u.device.specdata2 = MINOR(rdev); | |
4ea8fed5 TM |
3377 | } else if (!S_ISSOCK(mode)) { |
3378 | status = -EINVAL; | |
3379 | goto out_free; | |
1da177e4 | 3380 | } |
1da177e4 | 3381 | |
57dc9a57 | 3382 | status = nfs4_do_create(dir, dentry, data); |
4ea8fed5 | 3383 | out_free: |
57dc9a57 TM |
3384 | nfs4_free_createdata(data); |
3385 | out: | |
1da177e4 LT |
3386 | return status; |
3387 | } | |
3388 | ||
3389 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3390 | struct iattr *sattr, dev_t rdev) | |
3391 | { | |
3392 | struct nfs4_exception exception = { }; | |
3393 | int err; | |
a8a5da99 AK |
3394 | |
3395 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3396 | do { |
3397 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3398 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
3399 | &exception); | |
3400 | } while (exception.retry); | |
3401 | return err; | |
3402 | } | |
3403 | ||
3404 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3405 | struct nfs_fsstat *fsstat) | |
3406 | { | |
3407 | struct nfs4_statfs_arg args = { | |
3408 | .fh = fhandle, | |
3409 | .bitmask = server->attr_bitmask, | |
3410 | }; | |
24ad148a BH |
3411 | struct nfs4_statfs_res res = { |
3412 | .fsstat = fsstat, | |
3413 | }; | |
1da177e4 LT |
3414 | struct rpc_message msg = { |
3415 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3416 | .rpc_argp = &args, | |
24ad148a | 3417 | .rpc_resp = &res, |
1da177e4 LT |
3418 | }; |
3419 | ||
0e574af1 | 3420 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3421 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3422 | } |
3423 | ||
3424 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3425 | { | |
3426 | struct nfs4_exception exception = { }; | |
3427 | int err; | |
3428 | do { | |
3429 | err = nfs4_handle_exception(server, | |
3430 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3431 | &exception); | |
3432 | } while (exception.retry); | |
3433 | return err; | |
3434 | } | |
3435 | ||
3436 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3437 | struct nfs_fsinfo *fsinfo) | |
3438 | { | |
3439 | struct nfs4_fsinfo_arg args = { | |
3440 | .fh = fhandle, | |
3441 | .bitmask = server->attr_bitmask, | |
3442 | }; | |
3dda5e43 BH |
3443 | struct nfs4_fsinfo_res res = { |
3444 | .fsinfo = fsinfo, | |
3445 | }; | |
1da177e4 LT |
3446 | struct rpc_message msg = { |
3447 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3448 | .rpc_argp = &args, | |
3dda5e43 | 3449 | .rpc_resp = &res, |
1da177e4 LT |
3450 | }; |
3451 | ||
7c513058 | 3452 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3453 | } |
3454 | ||
3455 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3456 | { | |
3457 | struct nfs4_exception exception = { }; | |
3458 | int err; | |
3459 | ||
3460 | do { | |
3461 | err = nfs4_handle_exception(server, | |
3462 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
3463 | &exception); | |
3464 | } while (exception.retry); | |
3465 | return err; | |
3466 | } | |
3467 | ||
3468 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3469 | { | |
e38eb650 BS |
3470 | int error; |
3471 | ||
0e574af1 | 3472 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 | 3473 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
dc182549 PT |
3474 | if (error == 0) { |
3475 | /* block layout checks this! */ | |
3476 | server->pnfs_blksize = fsinfo->blksize; | |
e38eb650 | 3477 | set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype); |
dc182549 | 3478 | } |
e38eb650 BS |
3479 | |
3480 | return error; | |
1da177e4 LT |
3481 | } |
3482 | ||
3483 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3484 | struct nfs_pathconf *pathconf) | |
3485 | { | |
3486 | struct nfs4_pathconf_arg args = { | |
3487 | .fh = fhandle, | |
3488 | .bitmask = server->attr_bitmask, | |
3489 | }; | |
d45b2989 BH |
3490 | struct nfs4_pathconf_res res = { |
3491 | .pathconf = pathconf, | |
3492 | }; | |
1da177e4 LT |
3493 | struct rpc_message msg = { |
3494 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3495 | .rpc_argp = &args, | |
d45b2989 | 3496 | .rpc_resp = &res, |
1da177e4 LT |
3497 | }; |
3498 | ||
3499 | /* None of the pathconf attributes are mandatory to implement */ | |
3500 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3501 | memset(pathconf, 0, sizeof(*pathconf)); | |
3502 | return 0; | |
3503 | } | |
3504 | ||
0e574af1 | 3505 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3506 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3507 | } |
3508 | ||
3509 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3510 | struct nfs_pathconf *pathconf) | |
3511 | { | |
3512 | struct nfs4_exception exception = { }; | |
3513 | int err; | |
3514 | ||
3515 | do { | |
3516 | err = nfs4_handle_exception(server, | |
3517 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3518 | &exception); | |
3519 | } while (exception.retry); | |
3520 | return err; | |
3521 | } | |
3522 | ||
5521abfd | 3523 | int nfs4_set_rw_stateid(nfs4_stateid *stateid, |
9b206149 TM |
3524 | const struct nfs_open_context *ctx, |
3525 | const struct nfs_lock_context *l_ctx, | |
3526 | fmode_t fmode) | |
3527 | { | |
3528 | const struct nfs_lockowner *lockowner = NULL; | |
3529 | ||
3530 | if (l_ctx != NULL) | |
3531 | lockowner = &l_ctx->lockowner; | |
5521abfd | 3532 | return nfs4_select_rw_stateid(stateid, ctx->state, fmode, lockowner); |
9b206149 TM |
3533 | } |
3534 | EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid); | |
3535 | ||
5521abfd TM |
3536 | static bool nfs4_stateid_is_current(nfs4_stateid *stateid, |
3537 | const struct nfs_open_context *ctx, | |
3538 | const struct nfs_lock_context *l_ctx, | |
3539 | fmode_t fmode) | |
3540 | { | |
3541 | nfs4_stateid current_stateid; | |
3542 | ||
3543 | if (nfs4_set_rw_stateid(¤t_stateid, ctx, l_ctx, fmode)) | |
3544 | return false; | |
3545 | return nfs4_stateid_match(stateid, ¤t_stateid); | |
3546 | } | |
3547 | ||
3548 | static bool nfs4_error_stateid_expired(int err) | |
3549 | { | |
3550 | switch (err) { | |
3551 | case -NFS4ERR_DELEG_REVOKED: | |
3552 | case -NFS4ERR_ADMIN_REVOKED: | |
3553 | case -NFS4ERR_BAD_STATEID: | |
3554 | case -NFS4ERR_STALE_STATEID: | |
3555 | case -NFS4ERR_OLD_STATEID: | |
3556 | case -NFS4ERR_OPENMODE: | |
3557 | case -NFS4ERR_EXPIRED: | |
3558 | return true; | |
3559 | } | |
3560 | return false; | |
3561 | } | |
3562 | ||
d20581aa BH |
3563 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3564 | { | |
cd841605 | 3565 | nfs_invalidate_atime(data->header->inode); |
d20581aa BH |
3566 | } |
3567 | ||
cbdabc7f | 3568 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3569 | { |
cd841605 | 3570 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
1da177e4 | 3571 | |
9e33bed5 | 3572 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3573 | rpc_restart_call_prepare(task); |
ec06c096 | 3574 | return -EAGAIN; |
1da177e4 | 3575 | } |
8850df99 | 3576 | |
d20581aa | 3577 | __nfs4_read_done_cb(data); |
1da177e4 | 3578 | if (task->tk_status > 0) |
ec06c096 TM |
3579 | renew_lease(server, data->timestamp); |
3580 | return 0; | |
1da177e4 LT |
3581 | } |
3582 | ||
5521abfd TM |
3583 | static bool nfs4_read_stateid_changed(struct rpc_task *task, |
3584 | struct nfs_readargs *args) | |
3585 | { | |
3586 | ||
3587 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
3588 | nfs4_stateid_is_current(&args->stateid, | |
3589 | args->context, | |
3590 | args->lock_context, | |
3591 | FMODE_READ)) | |
3592 | return false; | |
3593 | rpc_restart_call_prepare(task); | |
3594 | return true; | |
3595 | } | |
3596 | ||
cbdabc7f AA |
3597 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3598 | { | |
3599 | ||
3600 | dprintk("--> %s\n", __func__); | |
3601 | ||
3602 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3603 | return -EAGAIN; | |
5521abfd TM |
3604 | if (nfs4_read_stateid_changed(task, &data->args)) |
3605 | return -EAGAIN; | |
d20581aa BH |
3606 | return data->read_done_cb ? data->read_done_cb(task, data) : |
3607 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
3608 | } |
3609 | ||
bdc7f021 | 3610 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3611 | { |
1da177e4 | 3612 | data->timestamp = jiffies; |
cbdabc7f | 3613 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3614 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
9d12b216 | 3615 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
1da177e4 LT |
3616 | } |
3617 | ||
ea7c3303 BS |
3618 | static void nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) |
3619 | { | |
9b206149 | 3620 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
d9afbd1b TM |
3621 | &data->args.seq_args, |
3622 | &data->res.seq_res, | |
9b206149 TM |
3623 | task)) |
3624 | return; | |
3625 | nfs4_set_rw_stateid(&data->args.stateid, data->args.context, | |
3626 | data->args.lock_context, FMODE_READ); | |
1da177e4 LT |
3627 | } |
3628 | ||
b029bc9b | 3629 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3630 | { |
cd841605 | 3631 | struct inode *inode = data->header->inode; |
1da177e4 | 3632 | |
9e33bed5 | 3633 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3634 | rpc_restart_call_prepare(task); |
788e7a89 | 3635 | return -EAGAIN; |
1da177e4 | 3636 | } |
4f9838c7 | 3637 | if (task->tk_status >= 0) { |
1da177e4 | 3638 | renew_lease(NFS_SERVER(inode), data->timestamp); |
5a37f851 | 3639 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); |
4f9838c7 | 3640 | } |
788e7a89 | 3641 | return 0; |
1da177e4 LT |
3642 | } |
3643 | ||
5521abfd TM |
3644 | static bool nfs4_write_stateid_changed(struct rpc_task *task, |
3645 | struct nfs_writeargs *args) | |
3646 | { | |
3647 | ||
3648 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
3649 | nfs4_stateid_is_current(&args->stateid, | |
3650 | args->context, | |
3651 | args->lock_context, | |
3652 | FMODE_WRITE)) | |
3653 | return false; | |
3654 | rpc_restart_call_prepare(task); | |
3655 | return true; | |
3656 | } | |
3657 | ||
b029bc9b FI |
3658 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3659 | { | |
3660 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3661 | return -EAGAIN; | |
5521abfd TM |
3662 | if (nfs4_write_stateid_changed(task, &data->args)) |
3663 | return -EAGAIN; | |
d20581aa BH |
3664 | return data->write_done_cb ? data->write_done_cb(task, data) : |
3665 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
3666 | } |
3667 | ||
5a37f851 TM |
3668 | static |
3669 | bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data *data) | |
a69aef14 | 3670 | { |
5a37f851 TM |
3671 | const struct nfs_pgio_header *hdr = data->header; |
3672 | ||
3673 | /* Don't request attributes for pNFS or O_DIRECT writes */ | |
3674 | if (data->ds_clp != NULL || hdr->dreq != NULL) | |
3675 | return false; | |
3676 | /* Otherwise, request attributes if and only if we don't hold | |
3677 | * a delegation | |
3678 | */ | |
011e2a7f | 3679 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 3680 | } |
a69aef14 | 3681 | |
bdc7f021 | 3682 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3683 | { |
cd841605 | 3684 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
bdc7f021 | 3685 | |
5a37f851 | 3686 | if (!nfs4_write_need_cache_consistency_data(data)) { |
7ffd1064 FI |
3687 | data->args.bitmask = NULL; |
3688 | data->res.fattr = NULL; | |
3689 | } else | |
3690 | data->args.bitmask = server->cache_consistency_bitmask; | |
5a37f851 | 3691 | |
b029bc9b FI |
3692 | if (!data->write_done_cb) |
3693 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3694 | data->res.server = server; |
1da177e4 LT |
3695 | data->timestamp = jiffies; |
3696 | ||
bdc7f021 | 3697 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
9d12b216 | 3698 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3699 | } |
3700 | ||
c6cb80d0 BS |
3701 | static void nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) |
3702 | { | |
9b206149 | 3703 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
d9afbd1b TM |
3704 | &data->args.seq_args, |
3705 | &data->res.seq_res, | |
9b206149 TM |
3706 | task)) |
3707 | return; | |
3708 | nfs4_set_rw_stateid(&data->args.stateid, data->args.context, | |
3709 | data->args.lock_context, FMODE_WRITE); | |
1da177e4 LT |
3710 | } |
3711 | ||
0b7c0153 | 3712 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 | 3713 | { |
d9afbd1b TM |
3714 | nfs4_setup_sequence(NFS_SERVER(data->inode), |
3715 | &data->args.seq_args, | |
3716 | &data->res.seq_res, | |
3717 | task); | |
1da177e4 LT |
3718 | } |
3719 | ||
0b7c0153 | 3720 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 3721 | { |
1da177e4 | 3722 | struct inode *inode = data->inode; |
14516c3a | 3723 | |
9e33bed5 | 3724 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
d00c5d43 | 3725 | rpc_restart_call_prepare(task); |
788e7a89 | 3726 | return -EAGAIN; |
1da177e4 | 3727 | } |
788e7a89 | 3728 | return 0; |
1da177e4 LT |
3729 | } |
3730 | ||
0b7c0153 | 3731 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
3732 | { |
3733 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3734 | return -EAGAIN; | |
0b7c0153 | 3735 | return data->commit_done_cb(task, data); |
5f452431 FI |
3736 | } |
3737 | ||
0b7c0153 | 3738 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 3739 | { |
788e7a89 | 3740 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 3741 | |
0b7c0153 FI |
3742 | if (data->commit_done_cb == NULL) |
3743 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 3744 | data->res.server = server; |
bdc7f021 | 3745 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
9d12b216 | 3746 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3747 | } |
3748 | ||
9bc4e3ca CL |
3749 | struct nfs4_renewdata { |
3750 | struct nfs_client *client; | |
3751 | unsigned long timestamp; | |
3752 | }; | |
3753 | ||
1da177e4 LT |
3754 | /* |
3755 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3756 | * standalone procedure for queueing an asynchronous RENEW. | |
3757 | */ | |
9bc4e3ca | 3758 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3759 | { |
9bc4e3ca CL |
3760 | struct nfs4_renewdata *data = calldata; |
3761 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3762 | |
0851de06 AB |
3763 | if (atomic_read(&clp->cl_count) > 1) |
3764 | nfs4_schedule_state_renewal(clp); | |
3765 | nfs_put_client(clp); | |
9bc4e3ca | 3766 | kfree(data); |
dc96aef9 AB |
3767 | } |
3768 | ||
9bc4e3ca | 3769 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3770 | { |
9bc4e3ca CL |
3771 | struct nfs4_renewdata *data = calldata; |
3772 | struct nfs_client *clp = data->client; | |
3773 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3774 | |
3775 | if (task->tk_status < 0) { | |
95baa25c | 3776 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
3777 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
3778 | return; | |
3779 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 3780 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
3781 | return; |
3782 | } | |
3783 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 3784 | } |
452e9352 | 3785 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3786 | } |
3787 | ||
963d8fe5 TM |
3788 | static const struct rpc_call_ops nfs4_renew_ops = { |
3789 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3790 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3791 | }; |
3792 | ||
2f60ea6b | 3793 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
3794 | { |
3795 | struct rpc_message msg = { | |
3796 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3797 | .rpc_argp = clp, | |
b4454fe1 | 3798 | .rpc_cred = cred, |
1da177e4 | 3799 | }; |
9bc4e3ca | 3800 | struct nfs4_renewdata *data; |
1da177e4 | 3801 | |
2f60ea6b TM |
3802 | if (renew_flags == 0) |
3803 | return 0; | |
0851de06 AB |
3804 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3805 | return -EIO; | |
b569ad34 | 3806 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
3807 | if (data == NULL) |
3808 | return -ENOMEM; | |
3809 | data->client = clp; | |
3810 | data->timestamp = jiffies; | |
1da177e4 | 3811 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, |
9bc4e3ca | 3812 | &nfs4_renew_ops, data); |
1da177e4 LT |
3813 | } |
3814 | ||
8534d4ec | 3815 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3816 | { |
3817 | struct rpc_message msg = { | |
3818 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3819 | .rpc_argp = clp, | |
b4454fe1 | 3820 | .rpc_cred = cred, |
1da177e4 LT |
3821 | }; |
3822 | unsigned long now = jiffies; | |
3823 | int status; | |
3824 | ||
3825 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3826 | if (status < 0) | |
3827 | return status; | |
452e9352 | 3828 | do_renew_lease(clp, now); |
1da177e4 LT |
3829 | return 0; |
3830 | } | |
3831 | ||
aa1870af BF |
3832 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3833 | { | |
3834 | return (server->caps & NFS_CAP_ACLS) | |
3835 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3836 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3837 | } | |
3838 | ||
21f498c2 TM |
3839 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that |
3840 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on | |
aa1870af BF |
3841 | * the stack. |
3842 | */ | |
21f498c2 | 3843 | #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) |
aa1870af | 3844 | |
e9e3d724 NH |
3845 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
3846 | struct page **pages, unsigned int *pgbase) | |
3847 | { | |
3848 | struct page *newpage, **spages; | |
3849 | int rc = 0; | |
3850 | size_t len; | |
3851 | spages = pages; | |
3852 | ||
3853 | do { | |
21f498c2 | 3854 | len = min_t(size_t, PAGE_SIZE, buflen); |
e9e3d724 NH |
3855 | newpage = alloc_page(GFP_KERNEL); |
3856 | ||
3857 | if (newpage == NULL) | |
3858 | goto unwind; | |
3859 | memcpy(page_address(newpage), buf, len); | |
3860 | buf += len; | |
3861 | buflen -= len; | |
3862 | *pages++ = newpage; | |
3863 | rc++; | |
3864 | } while (buflen != 0); | |
3865 | ||
3866 | return rc; | |
3867 | ||
3868 | unwind: | |
3869 | for(; rc > 0; rc--) | |
3870 | __free_page(spages[rc-1]); | |
3871 | return -ENOMEM; | |
3872 | } | |
3873 | ||
e50a1c2e BF |
3874 | struct nfs4_cached_acl { |
3875 | int cached; | |
3876 | size_t len; | |
3e9d4154 | 3877 | char data[0]; |
e50a1c2e BF |
3878 | }; |
3879 | ||
3880 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3881 | { | |
3882 | struct nfs_inode *nfsi = NFS_I(inode); | |
3883 | ||
3884 | spin_lock(&inode->i_lock); | |
3885 | kfree(nfsi->nfs4_acl); | |
3886 | nfsi->nfs4_acl = acl; | |
3887 | spin_unlock(&inode->i_lock); | |
3888 | } | |
3889 | ||
3890 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3891 | { | |
3892 | nfs4_set_cached_acl(inode, NULL); | |
3893 | } | |
3894 | ||
3895 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3896 | { | |
3897 | struct nfs_inode *nfsi = NFS_I(inode); | |
3898 | struct nfs4_cached_acl *acl; | |
3899 | int ret = -ENOENT; | |
3900 | ||
3901 | spin_lock(&inode->i_lock); | |
3902 | acl = nfsi->nfs4_acl; | |
3903 | if (acl == NULL) | |
3904 | goto out; | |
3905 | if (buf == NULL) /* user is just asking for length */ | |
3906 | goto out_len; | |
3907 | if (acl->cached == 0) | |
3908 | goto out; | |
3909 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3910 | if (acl->len > buflen) | |
3911 | goto out; | |
3912 | memcpy(buf, acl->data, acl->len); | |
3913 | out_len: | |
3914 | ret = acl->len; | |
3915 | out: | |
3916 | spin_unlock(&inode->i_lock); | |
3917 | return ret; | |
3918 | } | |
3919 | ||
5794d21e | 3920 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
3921 | { |
3922 | struct nfs4_cached_acl *acl; | |
b291f1b1 | 3923 | size_t buflen = sizeof(*acl) + acl_len; |
e50a1c2e | 3924 | |
1f1ea6c2 | 3925 | if (buflen <= PAGE_SIZE) { |
b291f1b1 | 3926 | acl = kmalloc(buflen, GFP_KERNEL); |
e50a1c2e BF |
3927 | if (acl == NULL) |
3928 | goto out; | |
3929 | acl->cached = 1; | |
5794d21e | 3930 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
3931 | } else { |
3932 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3933 | if (acl == NULL) | |
3934 | goto out; | |
3935 | acl->cached = 0; | |
3936 | } | |
3937 | acl->len = acl_len; | |
3938 | out: | |
3939 | nfs4_set_cached_acl(inode, acl); | |
3940 | } | |
3941 | ||
bf118a34 AA |
3942 | /* |
3943 | * The getxattr API returns the required buffer length when called with a | |
3944 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
3945 | * the required buf. On a NULL buf, we send a page of data to the server | |
3946 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
3947 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
3948 | * the cache. If not so, we throw away the page, and cache the required | |
3949 | * length. The next getxattr call will then produce another round trip to | |
3950 | * the server, this time with the input buf of the required size. | |
3951 | */ | |
16b4289c | 3952 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3953 | { |
bf118a34 | 3954 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
3955 | struct nfs_getaclargs args = { |
3956 | .fh = NFS_FH(inode), | |
3957 | .acl_pages = pages, | |
3958 | .acl_len = buflen, | |
3959 | }; | |
663c79b3 BH |
3960 | struct nfs_getaclres res = { |
3961 | .acl_len = buflen, | |
3962 | }; | |
aa1870af BF |
3963 | struct rpc_message msg = { |
3964 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3965 | .rpc_argp = &args, | |
663c79b3 | 3966 | .rpc_resp = &res, |
aa1870af | 3967 | }; |
21f498c2 TM |
3968 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
3969 | int ret = -ENOMEM, i; | |
aa1870af | 3970 | |
bf118a34 AA |
3971 | /* As long as we're doing a round trip to the server anyway, |
3972 | * let's be prepared for a page of acl data. */ | |
3973 | if (npages == 0) | |
3974 | npages = 1; | |
21f498c2 TM |
3975 | if (npages > ARRAY_SIZE(pages)) |
3976 | return -ERANGE; | |
5a006899 | 3977 | |
bf118a34 AA |
3978 | for (i = 0; i < npages; i++) { |
3979 | pages[i] = alloc_page(GFP_KERNEL); | |
3980 | if (!pages[i]) | |
3981 | goto out_free; | |
e50a1c2e | 3982 | } |
5a006899 SP |
3983 | |
3984 | /* for decoding across pages */ | |
3985 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
3986 | if (!res.acl_scratch) | |
3987 | goto out_free; | |
3988 | ||
bf118a34 AA |
3989 | args.acl_len = npages * PAGE_SIZE; |
3990 | args.acl_pgbase = 0; | |
5a006899 | 3991 | |
de040bec | 3992 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
3993 | __func__, buf, buflen, npages, args.acl_len); |
3994 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
3995 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
3996 | if (ret) |
3997 | goto out_free; | |
bf118a34 | 3998 | |
1f1ea6c2 TM |
3999 | /* Handle the case where the passed-in buffer is too short */ |
4000 | if (res.acl_flags & NFS4_ACL_TRUNC) { | |
4001 | /* Did the user only issue a request for the acl length? */ | |
4002 | if (buf == NULL) | |
4003 | goto out_ok; | |
e50a1c2e | 4004 | ret = -ERANGE; |
1f1ea6c2 | 4005 | goto out_free; |
e50a1c2e | 4006 | } |
1f1ea6c2 | 4007 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 SW |
4008 | if (buf) { |
4009 | if (res.acl_len > buflen) { | |
4010 | ret = -ERANGE; | |
4011 | goto out_free; | |
4012 | } | |
1f1ea6c2 | 4013 | _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 | 4014 | } |
1f1ea6c2 TM |
4015 | out_ok: |
4016 | ret = res.acl_len; | |
e50a1c2e | 4017 | out_free: |
bf118a34 AA |
4018 | for (i = 0; i < npages; i++) |
4019 | if (pages[i]) | |
4020 | __free_page(pages[i]); | |
331818f1 TM |
4021 | if (res.acl_scratch) |
4022 | __free_page(res.acl_scratch); | |
aa1870af BF |
4023 | return ret; |
4024 | } | |
4025 | ||
16b4289c TM |
4026 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
4027 | { | |
4028 | struct nfs4_exception exception = { }; | |
4029 | ssize_t ret; | |
4030 | do { | |
4031 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
4032 | if (ret >= 0) | |
4033 | break; | |
4034 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
4035 | } while (exception.retry); | |
4036 | return ret; | |
4037 | } | |
4038 | ||
e50a1c2e BF |
4039 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
4040 | { | |
4041 | struct nfs_server *server = NFS_SERVER(inode); | |
4042 | int ret; | |
4043 | ||
4044 | if (!nfs4_server_supports_acls(server)) | |
4045 | return -EOPNOTSUPP; | |
4046 | ret = nfs_revalidate_inode(server, inode); | |
4047 | if (ret < 0) | |
4048 | return ret; | |
08a22b39 AK |
4049 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
4050 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
4051 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
4052 | if (ret != -ENOENT) | |
bf118a34 AA |
4053 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
4054 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
4055 | return ret; |
4056 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
4057 | } | |
4058 | ||
16b4289c | 4059 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
4060 | { |
4061 | struct nfs_server *server = NFS_SERVER(inode); | |
4062 | struct page *pages[NFS4ACL_MAXPAGES]; | |
4063 | struct nfs_setaclargs arg = { | |
4064 | .fh = NFS_FH(inode), | |
4065 | .acl_pages = pages, | |
4066 | .acl_len = buflen, | |
4067 | }; | |
73c403a9 | 4068 | struct nfs_setaclres res; |
4b580ee3 BF |
4069 | struct rpc_message msg = { |
4070 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
4071 | .rpc_argp = &arg, | |
73c403a9 | 4072 | .rpc_resp = &res, |
4b580ee3 | 4073 | }; |
21f498c2 | 4074 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
e9e3d724 | 4075 | int ret, i; |
4b580ee3 BF |
4076 | |
4077 | if (!nfs4_server_supports_acls(server)) | |
4078 | return -EOPNOTSUPP; | |
21f498c2 TM |
4079 | if (npages > ARRAY_SIZE(pages)) |
4080 | return -ERANGE; | |
e9e3d724 NH |
4081 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
4082 | if (i < 0) | |
4083 | return i; | |
57ec14c5 | 4084 | nfs4_inode_return_delegation(inode); |
7c513058 | 4085 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
4086 | |
4087 | /* | |
4088 | * Free each page after tx, so the only ref left is | |
4089 | * held by the network stack | |
4090 | */ | |
4091 | for (; i > 0; i--) | |
4092 | put_page(pages[i-1]); | |
4093 | ||
08a22b39 AK |
4094 | /* |
4095 | * Acl update can result in inode attribute update. | |
4096 | * so mark the attribute cache invalid. | |
4097 | */ | |
4098 | spin_lock(&inode->i_lock); | |
4099 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
4100 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
4101 | nfs_access_zap_cache(inode); |
4102 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
4103 | return ret; |
4104 | } | |
4105 | ||
16b4289c TM |
4106 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4107 | { | |
4108 | struct nfs4_exception exception = { }; | |
4109 | int err; | |
4110 | do { | |
4111 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
4112 | __nfs4_proc_set_acl(inode, buf, buflen), | |
4113 | &exception); | |
4114 | } while (exception.retry); | |
4115 | return err; | |
4116 | } | |
4117 | ||
1da177e4 | 4118 | static int |
aa5190d0 | 4119 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 4120 | { |
aa5190d0 TM |
4121 | struct nfs_client *clp = server->nfs_client; |
4122 | ||
4123 | if (task->tk_status >= 0) | |
1da177e4 LT |
4124 | return 0; |
4125 | switch(task->tk_status) { | |
a1d0b5ee | 4126 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
4127 | case -NFS4ERR_ADMIN_REVOKED: |
4128 | case -NFS4ERR_BAD_STATEID: | |
14977489 TM |
4129 | if (state == NULL) |
4130 | break; | |
4131 | nfs_remove_bad_delegation(state->inode); | |
9e33bed5 TM |
4132 | case -NFS4ERR_OPENMODE: |
4133 | if (state == NULL) | |
4134 | break; | |
5d422301 TM |
4135 | if (nfs4_schedule_stateid_recovery(server, state) < 0) |
4136 | goto stateid_invalid; | |
0400a6b0 | 4137 | goto wait_on_recovery; |
0ced63d1 | 4138 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
4139 | if (state != NULL) { |
4140 | if (nfs4_schedule_stateid_recovery(server, state) < 0) | |
4141 | goto stateid_invalid; | |
4142 | } | |
1da177e4 | 4143 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 4144 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
4145 | nfs4_schedule_lease_recovery(clp); |
4146 | goto wait_on_recovery; | |
4745e315 AA |
4147 | #if defined(CONFIG_NFS_V4_1) |
4148 | case -NFS4ERR_BADSESSION: | |
4149 | case -NFS4ERR_BADSLOT: | |
4150 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4151 | case -NFS4ERR_DEADSESSION: | |
4152 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4153 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
4154 | case -NFS4ERR_SEQ_MISORDERED: | |
4155 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
4156 | task->tk_status); | |
9f594791 | 4157 | nfs4_schedule_session_recovery(clp->cl_session, task->tk_status); |
4745e315 AA |
4158 | task->tk_status = 0; |
4159 | return -EAGAIN; | |
4160 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 4161 | case -NFS4ERR_DELAY: |
aa5190d0 | 4162 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 4163 | case -NFS4ERR_GRACE: |
1da177e4 LT |
4164 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
4165 | task->tk_status = 0; | |
4166 | return -EAGAIN; | |
a8a4ae3a | 4167 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
4168 | case -NFS4ERR_OLD_STATEID: |
4169 | task->tk_status = 0; | |
4170 | return -EAGAIN; | |
4171 | } | |
4172 | task->tk_status = nfs4_map_errors(task->tk_status); | |
4173 | return 0; | |
5d422301 TM |
4174 | stateid_invalid: |
4175 | task->tk_status = -EIO; | |
4176 | return 0; | |
0400a6b0 | 4177 | wait_on_recovery: |
a2c0b9e2 | 4178 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
4179 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
4180 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
4181 | task->tk_status = 0; | |
4182 | return -EAGAIN; | |
1da177e4 LT |
4183 | } |
4184 | ||
f092075d CL |
4185 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
4186 | nfs4_verifier *bootverf) | |
cd93710e CL |
4187 | { |
4188 | __be32 verf[2]; | |
4189 | ||
2c820d9a CL |
4190 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
4191 | /* An impossible timestamp guarantees this value | |
4192 | * will never match a generated boot time. */ | |
4193 | verf[0] = 0; | |
4194 | verf[1] = (__be32)(NSEC_PER_SEC + 1); | |
4195 | } else { | |
f092075d CL |
4196 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
4197 | verf[0] = (__be32)nn->boot_time.tv_sec; | |
4198 | verf[1] = (__be32)nn->boot_time.tv_nsec; | |
2c820d9a | 4199 | } |
cd93710e CL |
4200 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
4201 | } | |
4202 | ||
e984a55a CL |
4203 | static unsigned int |
4204 | nfs4_init_nonuniform_client_string(const struct nfs_client *clp, | |
4205 | char *buf, size_t len) | |
4206 | { | |
4207 | unsigned int result; | |
4208 | ||
4209 | rcu_read_lock(); | |
4210 | result = scnprintf(buf, len, "Linux NFSv4.0 %s/%s %s", | |
4211 | clp->cl_ipaddr, | |
4212 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4213 | RPC_DISPLAY_ADDR), | |
4214 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4215 | RPC_DISPLAY_PROTO)); | |
4216 | rcu_read_unlock(); | |
4217 | return result; | |
4218 | } | |
4219 | ||
4220 | static unsigned int | |
4221 | nfs4_init_uniform_client_string(const struct nfs_client *clp, | |
4222 | char *buf, size_t len) | |
4223 | { | |
6f2ea7f2 CL |
4224 | char *nodename = clp->cl_rpcclient->cl_nodename; |
4225 | ||
4226 | if (nfs4_client_id_uniquifier[0] != '\0') | |
4227 | nodename = nfs4_client_id_uniquifier; | |
e984a55a CL |
4228 | return scnprintf(buf, len, "Linux NFSv%u.%u %s", |
4229 | clp->rpc_ops->version, clp->cl_minorversion, | |
6f2ea7f2 | 4230 | nodename); |
e984a55a CL |
4231 | } |
4232 | ||
6bbb4ae8 CL |
4233 | /** |
4234 | * nfs4_proc_setclientid - Negotiate client ID | |
4235 | * @clp: state data structure | |
4236 | * @program: RPC program for NFSv4 callback service | |
4237 | * @port: IP port number for NFS4 callback service | |
4238 | * @cred: RPC credential to use for this call | |
4239 | * @res: where to place the result | |
4240 | * | |
4241 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4242 | */ | |
bb8b27e5 TM |
4243 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
4244 | unsigned short port, struct rpc_cred *cred, | |
4245 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
4246 | { |
4247 | nfs4_verifier sc_verifier; | |
4248 | struct nfs4_setclientid setclientid = { | |
4249 | .sc_verifier = &sc_verifier, | |
4250 | .sc_prog = program, | |
f4eecd5d | 4251 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
4252 | }; |
4253 | struct rpc_message msg = { | |
4254 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
4255 | .rpc_argp = &setclientid, | |
bb8b27e5 | 4256 | .rpc_resp = res, |
286d7d6a | 4257 | .rpc_cred = cred, |
1da177e4 | 4258 | }; |
6bbb4ae8 | 4259 | int status; |
1da177e4 | 4260 | |
de734831 | 4261 | /* nfs_client_id4 */ |
f092075d | 4262 | nfs4_init_boot_verifier(clp, &sc_verifier); |
e984a55a CL |
4263 | if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags)) |
4264 | setclientid.sc_name_len = | |
4265 | nfs4_init_uniform_client_string(clp, | |
4266 | setclientid.sc_name, | |
4267 | sizeof(setclientid.sc_name)); | |
4268 | else | |
4269 | setclientid.sc_name_len = | |
4270 | nfs4_init_nonuniform_client_string(clp, | |
4271 | setclientid.sc_name, | |
4272 | sizeof(setclientid.sc_name)); | |
de734831 | 4273 | /* cb_client4 */ |
e984a55a | 4274 | rcu_read_lock(); |
de734831 | 4275 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, |
d4d3c507 CL |
4276 | sizeof(setclientid.sc_netid), |
4277 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4278 | RPC_DISPLAY_NETID)); | |
de734831 CL |
4279 | rcu_read_unlock(); |
4280 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, | |
d4d3c507 | 4281 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
4282 | clp->cl_ipaddr, port >> 8, port & 255); |
4283 | ||
6bbb4ae8 CL |
4284 | dprintk("NFS call setclientid auth=%s, '%.*s'\n", |
4285 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4286 | setclientid.sc_name_len, setclientid.sc_name); | |
4287 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
4288 | dprintk("NFS reply setclientid: %d\n", status); | |
4289 | return status; | |
1da177e4 LT |
4290 | } |
4291 | ||
6bbb4ae8 CL |
4292 | /** |
4293 | * nfs4_proc_setclientid_confirm - Confirm client ID | |
4294 | * @clp: state data structure | |
4295 | * @res: result of a previous SETCLIENTID | |
4296 | * @cred: RPC credential to use for this call | |
4297 | * | |
4298 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4299 | */ | |
fd954ae1 | 4300 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
4301 | struct nfs4_setclientid_res *arg, |
4302 | struct rpc_cred *cred) | |
1da177e4 LT |
4303 | { |
4304 | struct nfs_fsinfo fsinfo; | |
4305 | struct rpc_message msg = { | |
4306 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 4307 | .rpc_argp = arg, |
1da177e4 | 4308 | .rpc_resp = &fsinfo, |
286d7d6a | 4309 | .rpc_cred = cred, |
1da177e4 LT |
4310 | }; |
4311 | unsigned long now; | |
4312 | int status; | |
4313 | ||
6bbb4ae8 CL |
4314 | dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", |
4315 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4316 | clp->cl_clientid); | |
1da177e4 | 4317 | now = jiffies; |
1bd714f2 | 4318 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
4319 | if (status == 0) { |
4320 | spin_lock(&clp->cl_lock); | |
4321 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
4322 | clp->cl_last_renewal = now; | |
4323 | spin_unlock(&clp->cl_lock); | |
4324 | } | |
6bbb4ae8 | 4325 | dprintk("NFS reply setclientid_confirm: %d\n", status); |
1da177e4 LT |
4326 | return status; |
4327 | } | |
4328 | ||
fe650407 TM |
4329 | struct nfs4_delegreturndata { |
4330 | struct nfs4_delegreturnargs args; | |
fa178f29 | 4331 | struct nfs4_delegreturnres res; |
fe650407 TM |
4332 | struct nfs_fh fh; |
4333 | nfs4_stateid stateid; | |
26e976a8 | 4334 | unsigned long timestamp; |
fa178f29 | 4335 | struct nfs_fattr fattr; |
fe650407 TM |
4336 | int rpc_status; |
4337 | }; | |
4338 | ||
fe650407 TM |
4339 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
4340 | { | |
4341 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 4342 | |
14516c3a TM |
4343 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4344 | return; | |
938e1010 | 4345 | |
79708861 RL |
4346 | switch (task->tk_status) { |
4347 | case -NFS4ERR_STALE_STATEID: | |
4348 | case -NFS4ERR_EXPIRED: | |
4349 | case 0: | |
fa178f29 | 4350 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
4351 | break; |
4352 | default: | |
4353 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
4354 | -EAGAIN) { | |
d00c5d43 | 4355 | rpc_restart_call_prepare(task); |
79708861 RL |
4356 | return; |
4357 | } | |
4358 | } | |
4359 | data->rpc_status = task->tk_status; | |
fe650407 TM |
4360 | } |
4361 | ||
4362 | static void nfs4_delegreturn_release(void *calldata) | |
4363 | { | |
fe650407 TM |
4364 | kfree(calldata); |
4365 | } | |
4366 | ||
938e1010 AA |
4367 | #if defined(CONFIG_NFS_V4_1) |
4368 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
4369 | { | |
4370 | struct nfs4_delegreturndata *d_data; | |
4371 | ||
4372 | d_data = (struct nfs4_delegreturndata *)data; | |
4373 | ||
d9afbd1b TM |
4374 | nfs4_setup_sequence(d_data->res.server, |
4375 | &d_data->args.seq_args, | |
4376 | &d_data->res.seq_res, | |
4377 | task); | |
938e1010 AA |
4378 | } |
4379 | #endif /* CONFIG_NFS_V4_1 */ | |
4380 | ||
c8d149f3 | 4381 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
4382 | #if defined(CONFIG_NFS_V4_1) |
4383 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
4384 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
4385 | .rpc_call_done = nfs4_delegreturn_done, |
4386 | .rpc_release = nfs4_delegreturn_release, | |
4387 | }; | |
4388 | ||
e6f81075 | 4389 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
4390 | { |
4391 | struct nfs4_delegreturndata *data; | |
fa178f29 | 4392 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 4393 | struct rpc_task *task; |
5138fde0 TM |
4394 | struct rpc_message msg = { |
4395 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
4396 | .rpc_cred = cred, | |
4397 | }; | |
c970aa85 TM |
4398 | struct rpc_task_setup task_setup_data = { |
4399 | .rpc_client = server->client, | |
5138fde0 | 4400 | .rpc_message = &msg, |
c970aa85 TM |
4401 | .callback_ops = &nfs4_delegreturn_ops, |
4402 | .flags = RPC_TASK_ASYNC, | |
4403 | }; | |
e6f81075 | 4404 | int status = 0; |
fe650407 | 4405 | |
8535b2be | 4406 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
4407 | if (data == NULL) |
4408 | return -ENOMEM; | |
9d12b216 | 4409 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
4410 | data->args.fhandle = &data->fh; |
4411 | data->args.stateid = &data->stateid; | |
9e907fec | 4412 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 4413 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 4414 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
4415 | data->res.fattr = &data->fattr; |
4416 | data->res.server = server; | |
5138fde0 | 4417 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 4418 | data->timestamp = jiffies; |
fe650407 TM |
4419 | data->rpc_status = 0; |
4420 | ||
c970aa85 | 4421 | task_setup_data.callback_data = data; |
1174dd1f TM |
4422 | msg.rpc_argp = &data->args; |
4423 | msg.rpc_resp = &data->res; | |
c970aa85 | 4424 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 4425 | if (IS_ERR(task)) |
fe650407 | 4426 | return PTR_ERR(task); |
e6f81075 TM |
4427 | if (!issync) |
4428 | goto out; | |
fe650407 | 4429 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
4430 | if (status != 0) |
4431 | goto out; | |
4432 | status = data->rpc_status; | |
e144cbcc TM |
4433 | if (status == 0) |
4434 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
4435 | else | |
4436 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 4437 | out: |
e6b3c4db | 4438 | rpc_put_task(task); |
fe650407 | 4439 | return status; |
1da177e4 LT |
4440 | } |
4441 | ||
e6f81075 | 4442 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
4443 | { |
4444 | struct nfs_server *server = NFS_SERVER(inode); | |
4445 | struct nfs4_exception exception = { }; | |
4446 | int err; | |
4447 | do { | |
e6f81075 | 4448 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
4449 | switch (err) { |
4450 | case -NFS4ERR_STALE_STATEID: | |
4451 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
4452 | case 0: |
4453 | return 0; | |
4454 | } | |
4455 | err = nfs4_handle_exception(server, err, &exception); | |
4456 | } while (exception.retry); | |
4457 | return err; | |
4458 | } | |
4459 | ||
4460 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
4461 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
4462 | ||
4463 | /* | |
4464 | * sleep, with exponential backoff, and retry the LOCK operation. | |
4465 | */ | |
4466 | static unsigned long | |
4467 | nfs4_set_lock_task_retry(unsigned long timeout) | |
4468 | { | |
d310310c | 4469 | freezable_schedule_timeout_killable(timeout); |
1da177e4 LT |
4470 | timeout <<= 1; |
4471 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
4472 | return NFS4_LOCK_MAXTIMEOUT; | |
4473 | return timeout; | |
4474 | } | |
4475 | ||
1da177e4 LT |
4476 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4477 | { | |
4478 | struct inode *inode = state->inode; | |
4479 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 4480 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 4481 | struct nfs_lockt_args arg = { |
1da177e4 | 4482 | .fh = NFS_FH(inode), |
911d1aaf | 4483 | .fl = request, |
1da177e4 | 4484 | }; |
911d1aaf TM |
4485 | struct nfs_lockt_res res = { |
4486 | .denied = request, | |
1da177e4 LT |
4487 | }; |
4488 | struct rpc_message msg = { | |
4489 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
4490 | .rpc_argp = &arg, | |
4491 | .rpc_resp = &res, | |
4492 | .rpc_cred = state->owner->so_cred, | |
4493 | }; | |
1da177e4 LT |
4494 | struct nfs4_lock_state *lsp; |
4495 | int status; | |
4496 | ||
911d1aaf | 4497 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
4498 | status = nfs4_set_lock_state(state, request); |
4499 | if (status != 0) | |
4500 | goto out; | |
4501 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 4502 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4503 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 4504 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
4505 | switch (status) { |
4506 | case 0: | |
4507 | request->fl_type = F_UNLCK; | |
4508 | break; | |
4509 | case -NFS4ERR_DENIED: | |
4510 | status = 0; | |
1da177e4 | 4511 | } |
70cc6487 | 4512 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 4513 | out: |
1da177e4 LT |
4514 | return status; |
4515 | } | |
4516 | ||
4517 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4518 | { | |
4519 | struct nfs4_exception exception = { }; | |
4520 | int err; | |
4521 | ||
4522 | do { | |
4523 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
4524 | _nfs4_proc_getlk(state, cmd, request), | |
4525 | &exception); | |
4526 | } while (exception.retry); | |
4527 | return err; | |
4528 | } | |
4529 | ||
4530 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
4531 | { | |
4532 | int res = 0; | |
4533 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
4534 | case FL_POSIX: | |
4535 | res = posix_lock_file_wait(file, fl); | |
4536 | break; | |
4537 | case FL_FLOCK: | |
4538 | res = flock_lock_file_wait(file, fl); | |
4539 | break; | |
4540 | default: | |
4541 | BUG(); | |
4542 | } | |
1da177e4 LT |
4543 | return res; |
4544 | } | |
4545 | ||
faf5f49c | 4546 | struct nfs4_unlockdata { |
911d1aaf TM |
4547 | struct nfs_locku_args arg; |
4548 | struct nfs_locku_res res; | |
faf5f49c TM |
4549 | struct nfs4_lock_state *lsp; |
4550 | struct nfs_open_context *ctx; | |
911d1aaf TM |
4551 | struct file_lock fl; |
4552 | const struct nfs_server *server; | |
26e976a8 | 4553 | unsigned long timestamp; |
faf5f49c TM |
4554 | }; |
4555 | ||
911d1aaf TM |
4556 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
4557 | struct nfs_open_context *ctx, | |
4558 | struct nfs4_lock_state *lsp, | |
4559 | struct nfs_seqid *seqid) | |
4560 | { | |
4561 | struct nfs4_unlockdata *p; | |
4562 | struct inode *inode = lsp->ls_state->inode; | |
4563 | ||
8535b2be | 4564 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
4565 | if (p == NULL) |
4566 | return NULL; | |
4567 | p->arg.fh = NFS_FH(inode); | |
4568 | p->arg.fl = &p->fl; | |
4569 | p->arg.seqid = seqid; | |
c1d51931 | 4570 | p->res.seqid = seqid; |
911d1aaf TM |
4571 | p->arg.stateid = &lsp->ls_stateid; |
4572 | p->lsp = lsp; | |
4573 | atomic_inc(&lsp->ls_count); | |
4574 | /* Ensure we don't close file until we're done freeing locks! */ | |
4575 | p->ctx = get_nfs_open_context(ctx); | |
4576 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4577 | p->server = NFS_SERVER(inode); | |
4578 | return p; | |
4579 | } | |
4580 | ||
06f814a3 | 4581 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 4582 | { |
963d8fe5 | 4583 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 4584 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
4585 | nfs4_put_lock_state(calldata->lsp); |
4586 | put_nfs_open_context(calldata->ctx); | |
4587 | kfree(calldata); | |
faf5f49c TM |
4588 | } |
4589 | ||
963d8fe5 | 4590 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 4591 | { |
963d8fe5 | 4592 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4593 | |
14516c3a TM |
4594 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
4595 | return; | |
faf5f49c TM |
4596 | switch (task->tk_status) { |
4597 | case 0: | |
f597c537 TM |
4598 | nfs4_stateid_copy(&calldata->lsp->ls_stateid, |
4599 | &calldata->res.stateid); | |
26e976a8 | 4600 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 4601 | break; |
9e33bed5 TM |
4602 | case -NFS4ERR_BAD_STATEID: |
4603 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
4604 | case -NFS4ERR_STALE_STATEID: |
4605 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
4606 | break; |
4607 | default: | |
9e33bed5 | 4608 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
d00c5d43 | 4609 | rpc_restart_call_prepare(task); |
faf5f49c | 4610 | } |
2b1bc308 | 4611 | nfs_release_seqid(calldata->arg.seqid); |
faf5f49c TM |
4612 | } |
4613 | ||
4ce70ada | 4614 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 4615 | { |
4ce70ada | 4616 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4617 | |
911d1aaf | 4618 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 4619 | goto out_wait; |
795a88c9 | 4620 | if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) { |
963d8fe5 | 4621 | /* Note: exit _without_ running nfs4_locku_done */ |
c8da19b9 | 4622 | goto out_no_action; |
faf5f49c | 4623 | } |
26e976a8 | 4624 | calldata->timestamp = jiffies; |
035168ab | 4625 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 4626 | &calldata->arg.seq_args, |
2240a9e2 TM |
4627 | &calldata->res.seq_res, |
4628 | task) != 0) | |
4629 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 TM |
4630 | return; |
4631 | out_no_action: | |
4632 | task->tk_action = NULL; | |
4633 | out_wait: | |
4634 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
faf5f49c TM |
4635 | } |
4636 | ||
963d8fe5 | 4637 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 4638 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 4639 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 4640 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
4641 | }; |
4642 | ||
a5d16a4d TM |
4643 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
4644 | struct nfs_open_context *ctx, | |
4645 | struct nfs4_lock_state *lsp, | |
4646 | struct nfs_seqid *seqid) | |
4647 | { | |
4648 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
4649 | struct rpc_message msg = { |
4650 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
4651 | .rpc_cred = ctx->cred, | |
4652 | }; | |
c970aa85 TM |
4653 | struct rpc_task_setup task_setup_data = { |
4654 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 4655 | .rpc_message = &msg, |
c970aa85 | 4656 | .callback_ops = &nfs4_locku_ops, |
101070ca | 4657 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4658 | .flags = RPC_TASK_ASYNC, |
4659 | }; | |
a5d16a4d | 4660 | |
137d6aca FF |
4661 | /* Ensure this is an unlock - when canceling a lock, the |
4662 | * canceled lock is passed in, and it won't be an unlock. | |
4663 | */ | |
4664 | fl->fl_type = F_UNLCK; | |
4665 | ||
a5d16a4d TM |
4666 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
4667 | if (data == NULL) { | |
4668 | nfs_free_seqid(seqid); | |
4669 | return ERR_PTR(-ENOMEM); | |
4670 | } | |
4671 | ||
9d12b216 | 4672 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4673 | msg.rpc_argp = &data->arg; |
4674 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4675 | task_setup_data.callback_data = data; |
4676 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
4677 | } |
4678 | ||
faf5f49c TM |
4679 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
4680 | { | |
65b62a29 TM |
4681 | struct inode *inode = state->inode; |
4682 | struct nfs4_state_owner *sp = state->owner; | |
4683 | struct nfs_inode *nfsi = NFS_I(inode); | |
911d1aaf | 4684 | struct nfs_seqid *seqid; |
1da177e4 | 4685 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
4686 | struct rpc_task *task; |
4687 | int status = 0; | |
536ff0f8 | 4688 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 4689 | |
8d0a8a9d | 4690 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
4691 | /* Unlock _before_ we do the RPC call */ |
4692 | request->fl_flags |= FL_EXISTS; | |
65b62a29 TM |
4693 | /* Exclude nfs_delegation_claim_locks() */ |
4694 | mutex_lock(&sp->so_delegreturn_mutex); | |
4695 | /* Exclude nfs4_reclaim_open_stateid() - note nesting! */ | |
19e03c57 TM |
4696 | down_read(&nfsi->rwsem); |
4697 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
4698 | up_read(&nfsi->rwsem); | |
65b62a29 | 4699 | mutex_unlock(&sp->so_delegreturn_mutex); |
9b073574 | 4700 | goto out; |
19e03c57 TM |
4701 | } |
4702 | up_read(&nfsi->rwsem); | |
65b62a29 | 4703 | mutex_unlock(&sp->so_delegreturn_mutex); |
8d0a8a9d | 4704 | if (status != 0) |
9b073574 TM |
4705 | goto out; |
4706 | /* Is this a delegated lock? */ | |
4707 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
4708 | goto out; | |
8d0a8a9d | 4709 | lsp = request->fl_u.nfs4_fl.owner; |
8535b2be | 4710 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 4711 | status = -ENOMEM; |
911d1aaf | 4712 | if (seqid == NULL) |
9b073574 | 4713 | goto out; |
cd3758e3 | 4714 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
4715 | status = PTR_ERR(task); |
4716 | if (IS_ERR(task)) | |
9b073574 | 4717 | goto out; |
a5d16a4d | 4718 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 4719 | rpc_put_task(task); |
9b073574 | 4720 | out: |
536ff0f8 | 4721 | request->fl_flags = fl_flags; |
1da177e4 LT |
4722 | return status; |
4723 | } | |
4724 | ||
a5d16a4d TM |
4725 | struct nfs4_lockdata { |
4726 | struct nfs_lock_args arg; | |
4727 | struct nfs_lock_res res; | |
4728 | struct nfs4_lock_state *lsp; | |
4729 | struct nfs_open_context *ctx; | |
4730 | struct file_lock fl; | |
26e976a8 | 4731 | unsigned long timestamp; |
a5d16a4d TM |
4732 | int rpc_status; |
4733 | int cancelled; | |
66179efe | 4734 | struct nfs_server *server; |
a5d16a4d TM |
4735 | }; |
4736 | ||
4737 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
4738 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
4739 | gfp_t gfp_mask) | |
1da177e4 | 4740 | { |
a5d16a4d TM |
4741 | struct nfs4_lockdata *p; |
4742 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 4743 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 4744 | |
8535b2be | 4745 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
4746 | if (p == NULL) |
4747 | return NULL; | |
4748 | ||
4749 | p->arg.fh = NFS_FH(inode); | |
4750 | p->arg.fl = &p->fl; | |
8535b2be | 4751 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4752 | if (p->arg.open_seqid == NULL) |
4753 | goto out_free; | |
8535b2be | 4754 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4755 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4756 | goto out_free_seqid; |
a5d16a4d | 4757 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4758 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 4759 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4760 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 4761 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4762 | p->lsp = lsp; |
66179efe | 4763 | p->server = server; |
a5d16a4d TM |
4764 | atomic_inc(&lsp->ls_count); |
4765 | p->ctx = get_nfs_open_context(ctx); | |
4766 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4767 | return p; | |
2f74c0a0 TM |
4768 | out_free_seqid: |
4769 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4770 | out_free: |
4771 | kfree(p); | |
4772 | return NULL; | |
4773 | } | |
4774 | ||
4775 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4776 | { | |
4777 | struct nfs4_lockdata *data = calldata; | |
4778 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4779 | |
3110ff80 | 4780 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4781 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
c8da19b9 | 4782 | goto out_wait; |
a5d16a4d TM |
4783 | /* Do we need to do an open_to_lock_owner? */ |
4784 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
8fe72bac | 4785 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) { |
2240a9e2 | 4786 | goto out_release_lock_seqid; |
8fe72bac | 4787 | } |
a5d16a4d TM |
4788 | data->arg.open_stateid = &state->stateid; |
4789 | data->arg.new_lock_owner = 1; | |
c1d51931 | 4790 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4791 | } else |
4792 | data->arg.new_lock_owner = 0; | |
5d422301 TM |
4793 | if (!nfs4_valid_open_stateid(state)) { |
4794 | data->rpc_status = -EBADF; | |
4795 | task->tk_action = NULL; | |
4796 | goto out_release_open_seqid; | |
4797 | } | |
26e976a8 | 4798 | data->timestamp = jiffies; |
035168ab TM |
4799 | if (nfs4_setup_sequence(data->server, |
4800 | &data->arg.seq_args, | |
2240a9e2 | 4801 | &data->res.seq_res, |
d9afbd1b | 4802 | task) == 0) |
66179efe | 4803 | return; |
5d422301 | 4804 | out_release_open_seqid: |
2240a9e2 TM |
4805 | nfs_release_seqid(data->arg.open_seqid); |
4806 | out_release_lock_seqid: | |
4807 | nfs_release_seqid(data->arg.lock_seqid); | |
c8da19b9 TM |
4808 | out_wait: |
4809 | nfs4_sequence_done(task, &data->res.seq_res); | |
8fe72bac | 4810 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
b257957e AB |
4811 | } |
4812 | ||
a5d16a4d TM |
4813 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4814 | { | |
4815 | struct nfs4_lockdata *data = calldata; | |
4816 | ||
3110ff80 | 4817 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4818 | |
14516c3a TM |
4819 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4820 | return; | |
66179efe | 4821 | |
a5d16a4d | 4822 | data->rpc_status = task->tk_status; |
a5d16a4d | 4823 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4824 | if (data->rpc_status == 0) |
4825 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4826 | else | |
4827 | goto out; | |
4828 | } | |
4829 | if (data->rpc_status == 0) { | |
f597c537 | 4830 | nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid); |
795a88c9 | 4831 | set_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags); |
3d4ff43d | 4832 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 4833 | } |
a5d16a4d | 4834 | out: |
3110ff80 | 4835 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4836 | } |
4837 | ||
4838 | static void nfs4_lock_release(void *calldata) | |
4839 | { | |
4840 | struct nfs4_lockdata *data = calldata; | |
4841 | ||
3110ff80 | 4842 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4843 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4844 | if (data->cancelled != 0) { |
4845 | struct rpc_task *task; | |
4846 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4847 | data->arg.lock_seqid); | |
4848 | if (!IS_ERR(task)) | |
bf294b41 | 4849 | rpc_put_task_async(task); |
3110ff80 | 4850 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4851 | } else |
4852 | nfs_free_seqid(data->arg.lock_seqid); | |
4853 | nfs4_put_lock_state(data->lsp); | |
4854 | put_nfs_open_context(data->ctx); | |
4855 | kfree(data); | |
3110ff80 | 4856 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4857 | } |
4858 | ||
4859 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4860 | .rpc_call_prepare = nfs4_lock_prepare, | |
4861 | .rpc_call_done = nfs4_lock_done, | |
4862 | .rpc_release = nfs4_lock_release, | |
4863 | }; | |
4864 | ||
2bee72a6 TM |
4865 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4866 | { | |
2bee72a6 TM |
4867 | switch (error) { |
4868 | case -NFS4ERR_ADMIN_REVOKED: | |
4869 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 4870 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 | 4871 | if (new_lock_owner != 0 || |
795a88c9 | 4872 | test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0) |
ecac799a | 4873 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
4874 | break; |
4875 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 4876 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
4877 | case -NFS4ERR_EXPIRED: |
4878 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
4879 | }; |
4880 | } | |
4881 | ||
afe6c27c | 4882 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4883 | { |
4884 | struct nfs4_lockdata *data; | |
4885 | struct rpc_task *task; | |
5138fde0 TM |
4886 | struct rpc_message msg = { |
4887 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4888 | .rpc_cred = state->owner->so_cred, | |
4889 | }; | |
c970aa85 TM |
4890 | struct rpc_task_setup task_setup_data = { |
4891 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4892 | .rpc_message = &msg, |
c970aa85 | 4893 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4894 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4895 | .flags = RPC_TASK_ASYNC, |
4896 | }; | |
a5d16a4d TM |
4897 | int ret; |
4898 | ||
3110ff80 | 4899 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4900 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4901 | fl->fl_u.nfs4_fl.owner, |
4902 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4903 | if (data == NULL) |
4904 | return -ENOMEM; | |
4905 | if (IS_SETLKW(cmd)) | |
4906 | data->arg.block = 1; | |
9d12b216 | 4907 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4908 | msg.rpc_argp = &data->arg; |
4909 | msg.rpc_resp = &data->res; | |
c970aa85 | 4910 | task_setup_data.callback_data = data; |
8fe72bac TM |
4911 | if (recovery_type > NFS_LOCK_NEW) { |
4912 | if (recovery_type == NFS_LOCK_RECLAIM) | |
4913 | data->arg.reclaim = NFS_LOCK_RECLAIM; | |
4914 | nfs4_set_sequence_privileged(&data->arg.seq_args); | |
4915 | } | |
c970aa85 | 4916 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 4917 | if (IS_ERR(task)) |
a5d16a4d | 4918 | return PTR_ERR(task); |
a5d16a4d TM |
4919 | ret = nfs4_wait_for_completion_rpc_task(task); |
4920 | if (ret == 0) { | |
4921 | ret = data->rpc_status; | |
2bee72a6 TM |
4922 | if (ret) |
4923 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4924 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4925 | } else |
4926 | data->cancelled = 1; | |
e6b3c4db | 4927 | rpc_put_task(task); |
3110ff80 | 4928 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4929 | return ret; |
1da177e4 LT |
4930 | } |
4931 | ||
4932 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4933 | { | |
202b50dc | 4934 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4935 | struct nfs4_exception exception = { |
4936 | .inode = state->inode, | |
4937 | }; | |
202b50dc TM |
4938 | int err; |
4939 | ||
4940 | do { | |
42a2d13e TM |
4941 | /* Cache the lock if possible... */ |
4942 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4943 | return 0; | |
afe6c27c | 4944 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 4945 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
4946 | break; |
4947 | nfs4_handle_exception(server, err, &exception); | |
4948 | } while (exception.retry); | |
4949 | return err; | |
1da177e4 LT |
4950 | } |
4951 | ||
4952 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4953 | { | |
202b50dc | 4954 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4955 | struct nfs4_exception exception = { |
4956 | .inode = state->inode, | |
4957 | }; | |
202b50dc TM |
4958 | int err; |
4959 | ||
6bfc93ef TM |
4960 | err = nfs4_set_lock_state(state, request); |
4961 | if (err != 0) | |
4962 | return err; | |
202b50dc | 4963 | do { |
42a2d13e TM |
4964 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4965 | return 0; | |
afe6c27c | 4966 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
4967 | switch (err) { |
4968 | default: | |
4969 | goto out; | |
4970 | case -NFS4ERR_GRACE: | |
4971 | case -NFS4ERR_DELAY: | |
4972 | nfs4_handle_exception(server, err, &exception); | |
4973 | err = 0; | |
4974 | } | |
202b50dc | 4975 | } while (exception.retry); |
a9ed2e25 | 4976 | out: |
202b50dc | 4977 | return err; |
1da177e4 LT |
4978 | } |
4979 | ||
f062eb6c | 4980 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd CL |
4981 | /** |
4982 | * nfs41_check_expired_locks - possibly free a lock stateid | |
4983 | * | |
4984 | * @state: NFSv4 state for an inode | |
4985 | * | |
4986 | * Returns NFS_OK if recovery for this stateid is now finished. | |
4987 | * Otherwise a negative NFS4ERR value is returned. | |
4988 | */ | |
b01dd1d8 | 4989 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 4990 | { |
eb64cf96 | 4991 | int status, ret = -NFS4ERR_BAD_STATEID; |
b01dd1d8 | 4992 | struct nfs4_lock_state *lsp; |
f062eb6c BS |
4993 | struct nfs_server *server = NFS_SERVER(state->inode); |
4994 | ||
b01dd1d8 | 4995 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
795a88c9 | 4996 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { |
b01dd1d8 BS |
4997 | status = nfs41_test_stateid(server, &lsp->ls_stateid); |
4998 | if (status != NFS_OK) { | |
3e60ffdd CL |
4999 | /* Free the stateid unless the server |
5000 | * informs us the stateid is unrecognized. */ | |
89af2739 CL |
5001 | if (status != -NFS4ERR_BAD_STATEID) |
5002 | nfs41_free_stateid(server, | |
5003 | &lsp->ls_stateid); | |
795a88c9 | 5004 | clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); |
b01dd1d8 BS |
5005 | ret = status; |
5006 | } | |
5007 | } | |
5008 | }; | |
5009 | ||
5010 | return ret; | |
5011 | } | |
5012 | ||
5013 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
5014 | { | |
5015 | int status = NFS_OK; | |
5016 | ||
5017 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
5018 | status = nfs41_check_expired_locks(state); | |
eb64cf96 CL |
5019 | if (status != NFS_OK) |
5020 | status = nfs4_lock_expired(state, request); | |
5021 | return status; | |
f062eb6c BS |
5022 | } |
5023 | #endif | |
5024 | ||
1da177e4 LT |
5025 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
5026 | { | |
9a99af49 | 5027 | struct nfs4_state_owner *sp = state->owner; |
19e03c57 | 5028 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 5029 | unsigned char fl_flags = request->fl_flags; |
9a99af49 | 5030 | unsigned int seq; |
8e469ebd | 5031 | int status = -ENOLCK; |
1da177e4 | 5032 | |
8e469ebd TM |
5033 | if ((fl_flags & FL_POSIX) && |
5034 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
5035 | goto out; | |
6bfc93ef | 5036 | /* Is this a delegated open? */ |
6bfc93ef TM |
5037 | status = nfs4_set_lock_state(state, request); |
5038 | if (status != 0) | |
5039 | goto out; | |
01c3b861 TM |
5040 | request->fl_flags |= FL_ACCESS; |
5041 | status = do_vfs_lock(request->fl_file, request); | |
5042 | if (status < 0) | |
5043 | goto out; | |
19e03c57 | 5044 | down_read(&nfsi->rwsem); |
01c3b861 | 5045 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 5046 | /* Yes: cache locks! */ |
01c3b861 | 5047 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
5048 | request->fl_flags = fl_flags & ~FL_SLEEP; |
5049 | status = do_vfs_lock(request->fl_file, request); | |
5050 | goto out_unlock; | |
01c3b861 | 5051 | } |
9a99af49 TM |
5052 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); |
5053 | up_read(&nfsi->rwsem); | |
afe6c27c | 5054 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 5055 | if (status != 0) |
9a99af49 TM |
5056 | goto out; |
5057 | down_read(&nfsi->rwsem); | |
5058 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) { | |
5059 | status = -NFS4ERR_DELAY; | |
01c3b861 | 5060 | goto out_unlock; |
9a99af49 | 5061 | } |
6bfc93ef | 5062 | /* Note: we always want to sleep here! */ |
01c3b861 | 5063 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 5064 | if (do_vfs_lock(request->fl_file, request) < 0) |
a030889a WAA |
5065 | printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " |
5066 | "manager!\n", __func__); | |
01c3b861 | 5067 | out_unlock: |
19e03c57 | 5068 | up_read(&nfsi->rwsem); |
01c3b861 TM |
5069 | out: |
5070 | request->fl_flags = fl_flags; | |
1da177e4 LT |
5071 | return status; |
5072 | } | |
5073 | ||
5074 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
5075 | { | |
a1d0b5ee TM |
5076 | struct nfs4_exception exception = { |
5077 | .state = state, | |
05ffe24f | 5078 | .inode = state->inode, |
a1d0b5ee | 5079 | }; |
1da177e4 LT |
5080 | int err; |
5081 | ||
5082 | do { | |
965b5d67 TM |
5083 | err = _nfs4_proc_setlk(state, cmd, request); |
5084 | if (err == -NFS4ERR_DENIED) | |
5085 | err = -EAGAIN; | |
1da177e4 | 5086 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 5087 | err, &exception); |
1da177e4 LT |
5088 | } while (exception.retry); |
5089 | return err; | |
5090 | } | |
5091 | ||
5092 | static int | |
5093 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
5094 | { | |
5095 | struct nfs_open_context *ctx; | |
5096 | struct nfs4_state *state; | |
5097 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
5098 | int status; | |
5099 | ||
5100 | /* verify open state */ | |
cd3758e3 | 5101 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
5102 | state = ctx->state; |
5103 | ||
5104 | if (request->fl_start < 0 || request->fl_end < 0) | |
5105 | return -EINVAL; | |
5106 | ||
d953126a TM |
5107 | if (IS_GETLK(cmd)) { |
5108 | if (state != NULL) | |
5109 | return nfs4_proc_getlk(state, F_GETLK, request); | |
5110 | return 0; | |
5111 | } | |
1da177e4 LT |
5112 | |
5113 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
5114 | return -EINVAL; | |
5115 | ||
d953126a TM |
5116 | if (request->fl_type == F_UNLCK) { |
5117 | if (state != NULL) | |
5118 | return nfs4_proc_unlck(state, cmd, request); | |
5119 | return 0; | |
5120 | } | |
1da177e4 | 5121 | |
d953126a TM |
5122 | if (state == NULL) |
5123 | return -ENOLCK; | |
55725513 TM |
5124 | /* |
5125 | * Don't rely on the VFS having checked the file open mode, | |
5126 | * since it won't do this for flock() locks. | |
5127 | */ | |
f44106e2 | 5128 | switch (request->fl_type) { |
55725513 TM |
5129 | case F_RDLCK: |
5130 | if (!(filp->f_mode & FMODE_READ)) | |
5131 | return -EBADF; | |
5132 | break; | |
5133 | case F_WRLCK: | |
5134 | if (!(filp->f_mode & FMODE_WRITE)) | |
5135 | return -EBADF; | |
5136 | } | |
5137 | ||
1da177e4 LT |
5138 | do { |
5139 | status = nfs4_proc_setlk(state, cmd, request); | |
5140 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
5141 | break; | |
5142 | timeout = nfs4_set_lock_task_retry(timeout); | |
5143 | status = -ERESTARTSYS; | |
5144 | if (signalled()) | |
5145 | break; | |
5146 | } while(status < 0); | |
1da177e4 LT |
5147 | return status; |
5148 | } | |
5149 | ||
888e694c TM |
5150 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
5151 | { | |
5152 | struct nfs_server *server = NFS_SERVER(state->inode); | |
5153 | struct nfs4_exception exception = { }; | |
5154 | int err; | |
5155 | ||
5156 | err = nfs4_set_lock_state(state, fl); | |
5157 | if (err != 0) | |
5158 | goto out; | |
5159 | do { | |
afe6c27c | 5160 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
d5122201 TM |
5161 | switch (err) { |
5162 | default: | |
a030889a WAA |
5163 | printk(KERN_ERR "NFS: %s: unhandled error " |
5164 | "%d.\n", __func__, err); | |
d5122201 | 5165 | case 0: |
965b5d67 | 5166 | case -ESTALE: |
d5122201 | 5167 | goto out; |
d5122201 | 5168 | case -NFS4ERR_STALE_CLIENTID: |
965b5d67 | 5169 | case -NFS4ERR_STALE_STATEID: |
37380e42 TM |
5170 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
5171 | case -NFS4ERR_EXPIRED: | |
0400a6b0 | 5172 | nfs4_schedule_lease_recovery(server->nfs_client); |
37380e42 | 5173 | err = -EAGAIN; |
0400a6b0 | 5174 | goto out; |
74e7bb73 RL |
5175 | case -NFS4ERR_BADSESSION: |
5176 | case -NFS4ERR_BADSLOT: | |
5177 | case -NFS4ERR_BAD_HIGH_SLOT: | |
5178 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
5179 | case -NFS4ERR_DEADSESSION: | |
37380e42 | 5180 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
9f594791 | 5181 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); |
37380e42 | 5182 | err = -EAGAIN; |
d5122201 | 5183 | goto out; |
a1d0b5ee | 5184 | case -NFS4ERR_DELEG_REVOKED: |
965b5d67 TM |
5185 | case -NFS4ERR_ADMIN_REVOKED: |
5186 | case -NFS4ERR_BAD_STATEID: | |
5187 | case -NFS4ERR_OPENMODE: | |
0400a6b0 | 5188 | nfs4_schedule_stateid_recovery(server, state); |
965b5d67 TM |
5189 | err = 0; |
5190 | goto out; | |
5191 | case -ENOMEM: | |
5192 | case -NFS4ERR_DENIED: | |
5193 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
5194 | err = 0; | |
5195 | goto out; | |
d5122201 | 5196 | } |
37380e42 | 5197 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
888e694c TM |
5198 | err = nfs4_handle_exception(server, err, &exception); |
5199 | } while (exception.retry); | |
5200 | out: | |
5201 | return err; | |
5202 | } | |
6b3b5496 | 5203 | |
cf470c3e TM |
5204 | struct nfs_release_lockowner_data { |
5205 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 5206 | struct nfs_server *server; |
cf470c3e TM |
5207 | struct nfs_release_lockowner_args args; |
5208 | }; | |
5209 | ||
d3c7b7cc TM |
5210 | static void nfs4_release_lockowner_release(void *calldata) |
5211 | { | |
cf470c3e | 5212 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 5213 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
5214 | kfree(calldata); |
5215 | } | |
5216 | ||
17280175 | 5217 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
d3c7b7cc TM |
5218 | .rpc_release = nfs4_release_lockowner_release, |
5219 | }; | |
5220 | ||
cf470c3e | 5221 | int nfs4_release_lockowner(struct nfs4_lock_state *lsp) |
d3c7b7cc TM |
5222 | { |
5223 | struct nfs_server *server = lsp->ls_state->owner->so_server; | |
cf470c3e | 5224 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
5225 | struct rpc_message msg = { |
5226 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
5227 | }; | |
5228 | ||
5229 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
cf470c3e TM |
5230 | return -EINVAL; |
5231 | data = kmalloc(sizeof(*data), GFP_NOFS); | |
5232 | if (!data) | |
5233 | return -ENOMEM; | |
5234 | data->lsp = lsp; | |
5ae67c4f | 5235 | data->server = server; |
cf470c3e TM |
5236 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
5237 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
5238 | data->args.lock_owner.s_dev = server->s_dev; | |
5239 | msg.rpc_argp = &data->args; | |
5240 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); | |
5241 | return 0; | |
d3c7b7cc TM |
5242 | } |
5243 | ||
aa1870af BF |
5244 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
5245 | ||
64c2ce8b AK |
5246 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
5247 | const void *buf, size_t buflen, | |
5248 | int flags, int type) | |
6b3b5496 | 5249 | { |
64c2ce8b AK |
5250 | if (strcmp(key, "") != 0) |
5251 | return -EINVAL; | |
4b580ee3 | 5252 | |
64c2ce8b | 5253 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5254 | } |
5255 | ||
64c2ce8b AK |
5256 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
5257 | void *buf, size_t buflen, int type) | |
6b3b5496 | 5258 | { |
64c2ce8b AK |
5259 | if (strcmp(key, "") != 0) |
5260 | return -EINVAL; | |
aa1870af | 5261 | |
64c2ce8b | 5262 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5263 | } |
5264 | ||
64c2ce8b AK |
5265 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
5266 | size_t list_len, const char *name, | |
5267 | size_t name_len, int type) | |
6b3b5496 | 5268 | { |
64c2ce8b | 5269 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 5270 | |
096455a2 BF |
5271 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
5272 | return 0; | |
64c2ce8b AK |
5273 | |
5274 | if (list && len <= list_len) | |
5275 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 5276 | return len; |
6b3b5496 BF |
5277 | } |
5278 | ||
533eb461 AA |
5279 | /* |
5280 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
5281 | */ | |
69aaaae1 TM |
5282 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
5283 | { | |
533eb461 AA |
5284 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
5285 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
5286 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 5287 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
5288 | return; |
5289 | ||
5290 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 5291 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
5292 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
5293 | fattr->nlink = 2; | |
5294 | } | |
5295 | ||
f05d147f BS |
5296 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5297 | const struct qstr *name, | |
5298 | struct nfs4_fs_locations *fs_locations, | |
5299 | struct page *page) | |
683b57b4 TM |
5300 | { |
5301 | struct nfs_server *server = NFS_SERVER(dir); | |
5302 | u32 bitmask[2] = { | |
361e624f | 5303 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
5304 | }; |
5305 | struct nfs4_fs_locations_arg args = { | |
5306 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 5307 | .name = name, |
683b57b4 TM |
5308 | .page = page, |
5309 | .bitmask = bitmask, | |
5310 | }; | |
22958463 BH |
5311 | struct nfs4_fs_locations_res res = { |
5312 | .fs_locations = fs_locations, | |
5313 | }; | |
683b57b4 TM |
5314 | struct rpc_message msg = { |
5315 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
5316 | .rpc_argp = &args, | |
22958463 | 5317 | .rpc_resp = &res, |
683b57b4 TM |
5318 | }; |
5319 | int status; | |
5320 | ||
3110ff80 | 5321 | dprintk("%s: start\n", __func__); |
533eb461 AA |
5322 | |
5323 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
5324 | * is not supported */ | |
5325 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
5326 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
5327 | else | |
5328 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
5329 | ||
c228fd3a | 5330 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 5331 | fs_locations->server = server; |
830b8e33 | 5332 | fs_locations->nlocations = 0; |
f05d147f | 5333 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 5334 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
5335 | return status; |
5336 | } | |
5337 | ||
f05d147f BS |
5338 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5339 | const struct qstr *name, | |
5340 | struct nfs4_fs_locations *fs_locations, | |
5341 | struct page *page) | |
db0a9593 BS |
5342 | { |
5343 | struct nfs4_exception exception = { }; | |
5344 | int err; | |
5345 | do { | |
5346 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
f05d147f | 5347 | _nfs4_proc_fs_locations(client, dir, name, fs_locations, page), |
db0a9593 BS |
5348 | &exception); |
5349 | } while (exception.retry); | |
5350 | return err; | |
5351 | } | |
5352 | ||
5a5ea0d4 BS |
5353 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) |
5354 | { | |
5355 | int status; | |
5356 | struct nfs4_secinfo_arg args = { | |
5357 | .dir_fh = NFS_FH(dir), | |
5358 | .name = name, | |
5359 | }; | |
5360 | struct nfs4_secinfo_res res = { | |
5361 | .flavors = flavors, | |
5362 | }; | |
5363 | struct rpc_message msg = { | |
5364 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
5365 | .rpc_argp = &args, | |
5366 | .rpc_resp = &res, | |
5367 | }; | |
5368 | ||
5369 | dprintk("NFS call secinfo %s\n", name->name); | |
5370 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); | |
5371 | dprintk("NFS reply secinfo: %d\n", status); | |
5372 | return status; | |
5373 | } | |
5374 | ||
72de53ec BS |
5375 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
5376 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
5377 | { |
5378 | struct nfs4_exception exception = { }; | |
5379 | int err; | |
5380 | do { | |
5381 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
5382 | _nfs4_proc_secinfo(dir, name, flavors), | |
5383 | &exception); | |
5384 | } while (exception.retry); | |
5385 | return err; | |
5386 | } | |
5387 | ||
557134a3 | 5388 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
5389 | /* |
5390 | * Check the exchange flags returned by the server for invalid flags, having | |
5391 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
5392 | * DS flags set. | |
5393 | */ | |
5394 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
5395 | { | |
5396 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
5397 | goto out_inval; | |
5398 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
5399 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
5400 | goto out_inval; | |
5401 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
5402 | goto out_inval; | |
5403 | return NFS_OK; | |
5404 | out_inval: | |
5405 | return -NFS4ERR_INVAL; | |
5406 | } | |
5407 | ||
78fe0f41 | 5408 | static bool |
79d4e1f0 CL |
5409 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
5410 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
5411 | { |
5412 | if (a->server_scope_sz == b->server_scope_sz && | |
5413 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
5414 | return true; | |
5415 | ||
5416 | return false; | |
5417 | } | |
5418 | ||
7c44f1ae WAA |
5419 | /* |
5420 | * nfs4_proc_bind_conn_to_session() | |
5421 | * | |
5422 | * The 4.1 client currently uses the same TCP connection for the | |
5423 | * fore and backchannel. | |
5424 | */ | |
2cf047c9 | 5425 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred) |
7c44f1ae WAA |
5426 | { |
5427 | int status; | |
5428 | struct nfs41_bind_conn_to_session_res res; | |
5429 | struct rpc_message msg = { | |
5430 | .rpc_proc = | |
5431 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
5432 | .rpc_argp = clp, | |
5433 | .rpc_resp = &res, | |
2cf047c9 | 5434 | .rpc_cred = cred, |
7c44f1ae WAA |
5435 | }; |
5436 | ||
5437 | dprintk("--> %s\n", __func__); | |
7c44f1ae WAA |
5438 | |
5439 | res.session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); | |
5440 | if (unlikely(res.session == NULL)) { | |
5441 | status = -ENOMEM; | |
5442 | goto out; | |
5443 | } | |
5444 | ||
5445 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5446 | if (status == 0) { | |
5447 | if (memcmp(res.session->sess_id.data, | |
5448 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { | |
5449 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
5450 | status = -EIO; | |
5451 | goto out_session; | |
5452 | } | |
5453 | if (res.dir != NFS4_CDFS4_BOTH) { | |
5454 | dprintk("NFS: %s: Unexpected direction from server\n", | |
5455 | __func__); | |
5456 | status = -EIO; | |
5457 | goto out_session; | |
5458 | } | |
5459 | if (res.use_conn_in_rdma_mode) { | |
5460 | dprintk("NFS: %s: Server returned RDMA mode = true\n", | |
5461 | __func__); | |
5462 | status = -EIO; | |
5463 | goto out_session; | |
5464 | } | |
5465 | } | |
5466 | out_session: | |
5467 | kfree(res.session); | |
5468 | out: | |
5469 | dprintk("<-- %s status= %d\n", __func__, status); | |
5470 | return status; | |
5471 | } | |
5472 | ||
99fe60d0 BH |
5473 | /* |
5474 | * nfs4_proc_exchange_id() | |
5475 | * | |
6bbb4ae8 CL |
5476 | * Returns zero, a negative errno, or a negative NFS4ERR status code. |
5477 | * | |
99fe60d0 BH |
5478 | * Since the clientid has expired, all compounds using sessions |
5479 | * associated with the stale clientid will be returning | |
5480 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
5481 | * be in some phase of session reset. | |
5482 | */ | |
4d643d1d | 5483 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
5484 | { |
5485 | nfs4_verifier verifier; | |
5486 | struct nfs41_exchange_id_args args = { | |
cd93710e | 5487 | .verifier = &verifier, |
99fe60d0 | 5488 | .client = clp, |
357f54d6 | 5489 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, |
99fe60d0 BH |
5490 | }; |
5491 | struct nfs41_exchange_id_res res = { | |
32b01310 | 5492 | 0 |
99fe60d0 BH |
5493 | }; |
5494 | int status; | |
5495 | struct rpc_message msg = { | |
5496 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
5497 | .rpc_argp = &args, | |
5498 | .rpc_resp = &res, | |
5499 | .rpc_cred = cred, | |
5500 | }; | |
99fe60d0 | 5501 | |
f092075d | 5502 | nfs4_init_boot_verifier(clp, &verifier); |
e984a55a CL |
5503 | args.id_len = nfs4_init_uniform_client_string(clp, args.id, |
5504 | sizeof(args.id)); | |
6bbb4ae8 CL |
5505 | dprintk("NFS call exchange_id auth=%s, '%.*s'\n", |
5506 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
5507 | args.id_len, args.id); | |
99fe60d0 | 5508 | |
acdeb69d | 5509 | res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
bbafffd2 | 5510 | GFP_NOFS); |
acdeb69d | 5511 | if (unlikely(res.server_owner == NULL)) { |
abe9a6d5 WAA |
5512 | status = -ENOMEM; |
5513 | goto out; | |
5514 | } | |
78fe0f41 | 5515 | |
79d4e1f0 | 5516 | res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 5517 | GFP_NOFS); |
177313f1 | 5518 | if (unlikely(res.server_scope == NULL)) { |
abe9a6d5 | 5519 | status = -ENOMEM; |
acdeb69d | 5520 | goto out_server_owner; |
abe9a6d5 | 5521 | } |
78fe0f41 | 5522 | |
bbafffd2 | 5523 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
177313f1 | 5524 | if (unlikely(res.impl_id == NULL)) { |
7d2ed9ac WAA |
5525 | status = -ENOMEM; |
5526 | goto out_server_scope; | |
5527 | } | |
5528 | ||
1bd714f2 | 5529 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
177313f1 | 5530 | if (status == 0) |
32b01310 | 5531 | status = nfs4_check_cl_exchange_flags(res.flags); |
78fe0f41 | 5532 | |
acdeb69d | 5533 | if (status == 0) { |
32b01310 TM |
5534 | clp->cl_clientid = res.clientid; |
5535 | clp->cl_exchange_flags = (res.flags & ~EXCHGID4_FLAG_CONFIRMED_R); | |
5536 | if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R)) | |
5537 | clp->cl_seqid = res.seqid; | |
5538 | ||
acdeb69d CL |
5539 | kfree(clp->cl_serverowner); |
5540 | clp->cl_serverowner = res.server_owner; | |
5541 | res.server_owner = NULL; | |
78fe0f41 | 5542 | |
7d2ed9ac | 5543 | /* use the most recent implementation id */ |
59155546 CL |
5544 | kfree(clp->cl_implid); |
5545 | clp->cl_implid = res.impl_id; | |
7d2ed9ac | 5546 | |
177313f1 | 5547 | if (clp->cl_serverscope != NULL && |
79d4e1f0 | 5548 | !nfs41_same_server_scope(clp->cl_serverscope, |
78fe0f41 WAA |
5549 | res.server_scope)) { |
5550 | dprintk("%s: server_scope mismatch detected\n", | |
5551 | __func__); | |
5552 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
79d4e1f0 CL |
5553 | kfree(clp->cl_serverscope); |
5554 | clp->cl_serverscope = NULL; | |
78fe0f41 WAA |
5555 | } |
5556 | ||
177313f1 | 5557 | if (clp->cl_serverscope == NULL) { |
79d4e1f0 | 5558 | clp->cl_serverscope = res.server_scope; |
abe9a6d5 WAA |
5559 | goto out; |
5560 | } | |
32b01310 TM |
5561 | } else |
5562 | kfree(res.impl_id); | |
7d2ed9ac | 5563 | |
acdeb69d CL |
5564 | out_server_owner: |
5565 | kfree(res.server_owner); | |
7d2ed9ac | 5566 | out_server_scope: |
abe9a6d5 WAA |
5567 | kfree(res.server_scope); |
5568 | out: | |
177313f1 | 5569 | if (clp->cl_implid != NULL) |
6bbb4ae8 | 5570 | dprintk("NFS reply exchange_id: Server Implementation ID: " |
7d2ed9ac | 5571 | "domain: %s, name: %s, date: %llu,%u\n", |
6bbb4ae8 | 5572 | clp->cl_implid->domain, clp->cl_implid->name, |
59155546 CL |
5573 | clp->cl_implid->date.seconds, |
5574 | clp->cl_implid->date.nseconds); | |
6bbb4ae8 | 5575 | dprintk("NFS reply exchange_id: %d\n", status); |
99fe60d0 BH |
5576 | return status; |
5577 | } | |
5578 | ||
66245539 TM |
5579 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
5580 | struct rpc_cred *cred) | |
5581 | { | |
5582 | struct rpc_message msg = { | |
5583 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
5584 | .rpc_argp = clp, | |
5585 | .rpc_cred = cred, | |
5586 | }; | |
5587 | int status; | |
5588 | ||
5589 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5590 | if (status) | |
02c67525 | 5591 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
5592 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
5593 | return status; | |
5594 | } | |
5595 | ||
5596 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
5597 | struct rpc_cred *cred) | |
5598 | { | |
5599 | unsigned int loop; | |
5600 | int ret; | |
5601 | ||
5602 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
5603 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
5604 | switch (ret) { | |
5605 | case -NFS4ERR_DELAY: | |
5606 | case -NFS4ERR_CLIENTID_BUSY: | |
5607 | ssleep(1); | |
5608 | break; | |
5609 | default: | |
5610 | return ret; | |
5611 | } | |
5612 | } | |
5613 | return 0; | |
5614 | } | |
5615 | ||
5616 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
5617 | { | |
5618 | struct rpc_cred *cred; | |
5619 | int ret = 0; | |
5620 | ||
5621 | if (clp->cl_mvops->minor_version < 1) | |
5622 | goto out; | |
5623 | if (clp->cl_exchange_flags == 0) | |
5624 | goto out; | |
05f4c350 CL |
5625 | if (clp->cl_preserve_clid) |
5626 | goto out; | |
66245539 TM |
5627 | cred = nfs4_get_exchange_id_cred(clp); |
5628 | ret = nfs4_proc_destroy_clientid(clp, cred); | |
5629 | if (cred) | |
5630 | put_rpccred(cred); | |
5631 | switch (ret) { | |
5632 | case 0: | |
5633 | case -NFS4ERR_STALE_CLIENTID: | |
5634 | clp->cl_exchange_flags = 0; | |
5635 | } | |
5636 | out: | |
5637 | return ret; | |
5638 | } | |
5639 | ||
2050f0cc AA |
5640 | struct nfs4_get_lease_time_data { |
5641 | struct nfs4_get_lease_time_args *args; | |
5642 | struct nfs4_get_lease_time_res *res; | |
5643 | struct nfs_client *clp; | |
5644 | }; | |
5645 | ||
5646 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
5647 | void *calldata) | |
5648 | { | |
2050f0cc AA |
5649 | struct nfs4_get_lease_time_data *data = |
5650 | (struct nfs4_get_lease_time_data *)calldata; | |
5651 | ||
5652 | dprintk("--> %s\n", __func__); | |
5653 | /* just setup sequence, do not trigger session recovery | |
5654 | since we're invoked within one */ | |
d9afbd1b TM |
5655 | nfs41_setup_sequence(data->clp->cl_session, |
5656 | &data->args->la_seq_args, | |
5657 | &data->res->lr_seq_res, | |
5658 | task); | |
2050f0cc AA |
5659 | dprintk("<-- %s\n", __func__); |
5660 | } | |
5661 | ||
5662 | /* | |
5663 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
5664 | * from sequence operation or clientid errors. | |
5665 | */ | |
5666 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
5667 | { | |
5668 | struct nfs4_get_lease_time_data *data = | |
5669 | (struct nfs4_get_lease_time_data *)calldata; | |
5670 | ||
5671 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5672 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
5673 | return; | |
2050f0cc AA |
5674 | switch (task->tk_status) { |
5675 | case -NFS4ERR_DELAY: | |
5676 | case -NFS4ERR_GRACE: | |
5677 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
5678 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
5679 | task->tk_status = 0; | |
a8a4ae3a AA |
5680 | /* fall through */ |
5681 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 5682 | rpc_restart_call_prepare(task); |
2050f0cc AA |
5683 | return; |
5684 | } | |
2050f0cc AA |
5685 | dprintk("<-- %s\n", __func__); |
5686 | } | |
5687 | ||
17280175 | 5688 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
5689 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
5690 | .rpc_call_done = nfs4_get_lease_time_done, | |
5691 | }; | |
5692 | ||
5693 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
5694 | { | |
5695 | struct rpc_task *task; | |
5696 | struct nfs4_get_lease_time_args args; | |
5697 | struct nfs4_get_lease_time_res res = { | |
5698 | .lr_fsinfo = fsinfo, | |
5699 | }; | |
5700 | struct nfs4_get_lease_time_data data = { | |
5701 | .args = &args, | |
5702 | .res = &res, | |
5703 | .clp = clp, | |
5704 | }; | |
5705 | struct rpc_message msg = { | |
5706 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
5707 | .rpc_argp = &args, | |
5708 | .rpc_resp = &res, | |
5709 | }; | |
5710 | struct rpc_task_setup task_setup = { | |
5711 | .rpc_client = clp->cl_rpcclient, | |
5712 | .rpc_message = &msg, | |
5713 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
5714 | .callback_data = &data, |
5715 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
5716 | }; |
5717 | int status; | |
5718 | ||
9d12b216 | 5719 | nfs41_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
8fe72bac | 5720 | nfs4_set_sequence_privileged(&args.la_seq_args); |
2050f0cc AA |
5721 | dprintk("--> %s\n", __func__); |
5722 | task = rpc_run_task(&task_setup); | |
5723 | ||
5724 | if (IS_ERR(task)) | |
5725 | status = PTR_ERR(task); | |
5726 | else { | |
5727 | status = task->tk_status; | |
5728 | rpc_put_task(task); | |
5729 | } | |
5730 | dprintk("<-- %s return %d\n", __func__, status); | |
5731 | ||
5732 | return status; | |
5733 | } | |
5734 | ||
fc931582 AA |
5735 | /* |
5736 | * Initialize the values to be used by the client in CREATE_SESSION | |
5737 | * If nfs4_init_session set the fore channel request and response sizes, | |
5738 | * use them. | |
5739 | * | |
5740 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
5741 | * always set csa_cachethis to FALSE because the current implementation | |
5742 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
5743 | */ | |
5744 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
5745 | { | |
5746 | struct nfs4_session *session = args->client->cl_session; | |
ae72ae67 TM |
5747 | unsigned int mxrqst_sz = session->fc_target_max_rqst_sz, |
5748 | mxresp_sz = session->fc_target_max_resp_sz; | |
fc931582 AA |
5749 | |
5750 | if (mxrqst_sz == 0) | |
5751 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
5752 | if (mxresp_sz == 0) | |
5753 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
5754 | /* Fore channel attributes */ | |
fc931582 AA |
5755 | args->fc_attrs.max_rqst_sz = mxrqst_sz; |
5756 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 | 5757 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 5758 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
5759 | |
5760 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 5761 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
5762 | __func__, |
5763 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 5764 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
5765 | |
5766 | /* Back channel attributes */ | |
fc931582 AA |
5767 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
5768 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
5769 | args->bc_attrs.max_resp_sz_cached = 0; | |
5770 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
5771 | args->bc_attrs.max_reqs = 1; | |
5772 | ||
5773 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
5774 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
5775 | __func__, | |
5776 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
5777 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
5778 | args->bc_attrs.max_reqs); | |
5779 | } | |
5780 | ||
43c2e885 | 5781 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 5782 | { |
43c2e885 BF |
5783 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
5784 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
5785 | ||
43c2e885 BF |
5786 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
5787 | return -EINVAL; | |
5788 | /* | |
5789 | * Our requested max_ops is the minimum we need; we're not | |
5790 | * prepared to break up compounds into smaller pieces than that. | |
5791 | * So, no point even trying to continue if the server won't | |
5792 | * cooperate: | |
5793 | */ | |
5794 | if (rcvd->max_ops < sent->max_ops) | |
5795 | return -EINVAL; | |
5796 | if (rcvd->max_reqs == 0) | |
5797 | return -EINVAL; | |
b4b9a0c1 VG |
5798 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
5799 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 5800 | return 0; |
8d35301d AA |
5801 | } |
5802 | ||
43c2e885 BF |
5803 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
5804 | { | |
5805 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
5806 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 5807 | |
43c2e885 BF |
5808 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
5809 | return -EINVAL; | |
5810 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
5811 | return -EINVAL; | |
5812 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
5813 | return -EINVAL; | |
5814 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 5815 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 5816 | return -EINVAL; |
b4b9a0c1 | 5817 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 BF |
5818 | return -EINVAL; |
5819 | return 0; | |
5820 | } | |
8d35301d | 5821 | |
8d35301d AA |
5822 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
5823 | struct nfs4_session *session) | |
5824 | { | |
43c2e885 | 5825 | int ret; |
8d35301d | 5826 | |
43c2e885 BF |
5827 | ret = nfs4_verify_fore_channel_attrs(args, session); |
5828 | if (ret) | |
5829 | return ret; | |
5830 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
5831 | } |
5832 | ||
848f5bda TM |
5833 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
5834 | struct rpc_cred *cred) | |
fc931582 AA |
5835 | { |
5836 | struct nfs4_session *session = clp->cl_session; | |
5837 | struct nfs41_create_session_args args = { | |
5838 | .client = clp, | |
5839 | .cb_program = NFS4_CALLBACK, | |
5840 | }; | |
5841 | struct nfs41_create_session_res res = { | |
5842 | .client = clp, | |
5843 | }; | |
5844 | struct rpc_message msg = { | |
5845 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
5846 | .rpc_argp = &args, | |
5847 | .rpc_resp = &res, | |
848f5bda | 5848 | .rpc_cred = cred, |
fc931582 AA |
5849 | }; |
5850 | int status; | |
5851 | ||
5852 | nfs4_init_channel_attrs(&args); | |
0f91421e | 5853 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 5854 | |
1bd714f2 | 5855 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
fc931582 | 5856 | |
43095d39 | 5857 | if (!status) { |
8d35301d AA |
5858 | /* Verify the session's negotiated channel_attrs values */ |
5859 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
5860 | /* Increment the clientid slot sequence id */ |
5861 | clp->cl_seqid++; | |
5862 | } | |
5863 | ||
5864 | return status; | |
5865 | } | |
5866 | ||
5867 | /* | |
5868 | * Issues a CREATE_SESSION operation to the server. | |
5869 | * It is the responsibility of the caller to verify the session is | |
5870 | * expired before calling this routine. | |
5871 | */ | |
848f5bda | 5872 | int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred) |
fc931582 AA |
5873 | { |
5874 | int status; | |
5875 | unsigned *ptr; | |
fc931582 AA |
5876 | struct nfs4_session *session = clp->cl_session; |
5877 | ||
5878 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
5879 | ||
848f5bda | 5880 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
5881 | if (status) |
5882 | goto out; | |
5883 | ||
aacd5537 AA |
5884 | /* Init or reset the session slot tables */ |
5885 | status = nfs4_setup_session_slot_tables(session); | |
5886 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
5887 | if (status) |
5888 | goto out; | |
5889 | ||
5890 | ptr = (unsigned *)&session->sess_id.data[0]; | |
5891 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
5892 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
5893 | out: |
5894 | dprintk("<-- %s\n", __func__); | |
5895 | return status; | |
5896 | } | |
5897 | ||
0f3e66c6 AA |
5898 | /* |
5899 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
5900 | * The caller must serialize access to this routine. | |
5901 | */ | |
848f5bda TM |
5902 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
5903 | struct rpc_cred *cred) | |
0f3e66c6 | 5904 | { |
848f5bda TM |
5905 | struct rpc_message msg = { |
5906 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
5907 | .rpc_argp = session, | |
5908 | .rpc_cred = cred, | |
5909 | }; | |
0f3e66c6 | 5910 | int status = 0; |
0f3e66c6 AA |
5911 | |
5912 | dprintk("--> nfs4_proc_destroy_session\n"); | |
5913 | ||
5914 | /* session is still being setup */ | |
5915 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
5916 | return status; | |
5917 | ||
1bd714f2 | 5918 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
0f3e66c6 AA |
5919 | |
5920 | if (status) | |
08106ac7 | 5921 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
5922 | "Session has been destroyed regardless...\n", status); |
5923 | ||
5924 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
5925 | return status; | |
5926 | } | |
5927 | ||
fc01cea9 AA |
5928 | /* |
5929 | * Renew the cl_session lease. | |
5930 | */ | |
d5f8d3fe TM |
5931 | struct nfs4_sequence_data { |
5932 | struct nfs_client *clp; | |
5933 | struct nfs4_sequence_args args; | |
5934 | struct nfs4_sequence_res res; | |
5935 | }; | |
5936 | ||
dc96aef9 AB |
5937 | static void nfs41_sequence_release(void *data) |
5938 | { | |
d5f8d3fe TM |
5939 | struct nfs4_sequence_data *calldata = data; |
5940 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 5941 | |
7135840f AB |
5942 | if (atomic_read(&clp->cl_count) > 1) |
5943 | nfs4_schedule_state_renewal(clp); | |
5944 | nfs_put_client(clp); | |
d5f8d3fe | 5945 | kfree(calldata); |
dc96aef9 AB |
5946 | } |
5947 | ||
aa5190d0 TM |
5948 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5949 | { | |
5950 | switch(task->tk_status) { | |
5951 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5952 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5953 | return -EAGAIN; | |
5954 | default: | |
0400a6b0 | 5955 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5956 | } |
5957 | return 0; | |
5958 | } | |
5959 | ||
dc96aef9 | 5960 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 5961 | { |
d5f8d3fe TM |
5962 | struct nfs4_sequence_data *calldata = data; |
5963 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 5964 | |
14516c3a TM |
5965 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
5966 | return; | |
fc01cea9 AA |
5967 | |
5968 | if (task->tk_status < 0) { | |
5969 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
5970 | if (atomic_read(&clp->cl_count) == 1) |
5971 | goto out; | |
fc01cea9 | 5972 | |
aa5190d0 TM |
5973 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
5974 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
5975 | return; |
5976 | } | |
5977 | } | |
fc01cea9 | 5978 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 5979 | out: |
fc01cea9 AA |
5980 | dprintk("<-- %s\n", __func__); |
5981 | } | |
5982 | ||
5983 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
5984 | { | |
d5f8d3fe TM |
5985 | struct nfs4_sequence_data *calldata = data; |
5986 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
5987 | struct nfs4_sequence_args *args; |
5988 | struct nfs4_sequence_res *res; | |
5989 | ||
fc01cea9 AA |
5990 | args = task->tk_msg.rpc_argp; |
5991 | res = task->tk_msg.rpc_resp; | |
5992 | ||
d9afbd1b | 5993 | nfs41_setup_sequence(clp->cl_session, args, res, task); |
fc01cea9 AA |
5994 | } |
5995 | ||
5996 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
5997 | .rpc_call_done = nfs41_sequence_call_done, | |
5998 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 5999 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
6000 | }; |
6001 | ||
8fe72bac TM |
6002 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, |
6003 | struct rpc_cred *cred, | |
6004 | bool is_privileged) | |
fc01cea9 | 6005 | { |
d5f8d3fe | 6006 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
6007 | struct rpc_message msg = { |
6008 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
6009 | .rpc_cred = cred, | |
6010 | }; | |
71ac6da9 TM |
6011 | struct rpc_task_setup task_setup_data = { |
6012 | .rpc_client = clp->cl_rpcclient, | |
6013 | .rpc_message = &msg, | |
8fe72bac | 6014 | .callback_ops = &nfs41_sequence_ops, |
71ac6da9 TM |
6015 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT, |
6016 | }; | |
fc01cea9 | 6017 | |
7135840f | 6018 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 6019 | return ERR_PTR(-EIO); |
dfb4f309 | 6020 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 6021 | if (calldata == NULL) { |
7135840f | 6022 | nfs_put_client(clp); |
71ac6da9 | 6023 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 6024 | } |
9d12b216 | 6025 | nfs41_init_sequence(&calldata->args, &calldata->res, 0); |
8fe72bac TM |
6026 | if (is_privileged) |
6027 | nfs4_set_sequence_privileged(&calldata->args); | |
d5f8d3fe TM |
6028 | msg.rpc_argp = &calldata->args; |
6029 | msg.rpc_resp = &calldata->res; | |
6030 | calldata->clp = clp; | |
71ac6da9 | 6031 | task_setup_data.callback_data = calldata; |
fc01cea9 | 6032 | |
71ac6da9 TM |
6033 | return rpc_run_task(&task_setup_data); |
6034 | } | |
6035 | ||
2f60ea6b | 6036 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
6037 | { |
6038 | struct rpc_task *task; | |
6039 | int ret = 0; | |
6040 | ||
2f60ea6b TM |
6041 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
6042 | return 0; | |
8fe72bac | 6043 | task = _nfs41_proc_sequence(clp, cred, false); |
71ac6da9 TM |
6044 | if (IS_ERR(task)) |
6045 | ret = PTR_ERR(task); | |
6046 | else | |
bf294b41 | 6047 | rpc_put_task_async(task); |
71ac6da9 TM |
6048 | dprintk("<-- %s status=%d\n", __func__, ret); |
6049 | return ret; | |
6050 | } | |
6051 | ||
6052 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
6053 | { | |
6054 | struct rpc_task *task; | |
6055 | int ret; | |
6056 | ||
8fe72bac | 6057 | task = _nfs41_proc_sequence(clp, cred, true); |
71ac6da9 TM |
6058 | if (IS_ERR(task)) { |
6059 | ret = PTR_ERR(task); | |
6060 | goto out; | |
6061 | } | |
6062 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
6063 | if (!ret) { |
6064 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
6065 | ||
6066 | if (task->tk_status == 0) | |
6067 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 6068 | ret = task->tk_status; |
b4410c2f | 6069 | } |
71ac6da9 TM |
6070 | rpc_put_task(task); |
6071 | out: | |
6072 | dprintk("<-- %s status=%d\n", __func__, ret); | |
6073 | return ret; | |
fc01cea9 AA |
6074 | } |
6075 | ||
fce5c838 RL |
6076 | struct nfs4_reclaim_complete_data { |
6077 | struct nfs_client *clp; | |
6078 | struct nfs41_reclaim_complete_args arg; | |
6079 | struct nfs41_reclaim_complete_res res; | |
6080 | }; | |
6081 | ||
6082 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
6083 | { | |
6084 | struct nfs4_reclaim_complete_data *calldata = data; | |
6085 | ||
d9afbd1b TM |
6086 | nfs41_setup_sequence(calldata->clp->cl_session, |
6087 | &calldata->arg.seq_args, | |
6088 | &calldata->res.seq_res, | |
6089 | task); | |
fce5c838 RL |
6090 | } |
6091 | ||
aa5190d0 TM |
6092 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
6093 | { | |
6094 | switch(task->tk_status) { | |
6095 | case 0: | |
6096 | case -NFS4ERR_COMPLETE_ALREADY: | |
6097 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
6098 | break; | |
6099 | case -NFS4ERR_DELAY: | |
aa5190d0 | 6100 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
6101 | /* fall through */ |
6102 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
6103 | return -EAGAIN; |
6104 | default: | |
0400a6b0 | 6105 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
6106 | } |
6107 | return 0; | |
6108 | } | |
6109 | ||
fce5c838 RL |
6110 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
6111 | { | |
6112 | struct nfs4_reclaim_complete_data *calldata = data; | |
6113 | struct nfs_client *clp = calldata->clp; | |
6114 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
6115 | ||
6116 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
6117 | if (!nfs41_sequence_done(task, res)) |
6118 | return; | |
fce5c838 | 6119 | |
aa5190d0 TM |
6120 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
6121 | rpc_restart_call_prepare(task); | |
6122 | return; | |
6123 | } | |
fce5c838 RL |
6124 | dprintk("<-- %s\n", __func__); |
6125 | } | |
6126 | ||
6127 | static void nfs4_free_reclaim_complete_data(void *data) | |
6128 | { | |
6129 | struct nfs4_reclaim_complete_data *calldata = data; | |
6130 | ||
6131 | kfree(calldata); | |
6132 | } | |
6133 | ||
6134 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
6135 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
6136 | .rpc_call_done = nfs4_reclaim_complete_done, | |
6137 | .rpc_release = nfs4_free_reclaim_complete_data, | |
6138 | }; | |
6139 | ||
6140 | /* | |
6141 | * Issue a global reclaim complete. | |
6142 | */ | |
6143 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
6144 | { | |
6145 | struct nfs4_reclaim_complete_data *calldata; | |
6146 | struct rpc_task *task; | |
6147 | struct rpc_message msg = { | |
6148 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
6149 | }; | |
6150 | struct rpc_task_setup task_setup_data = { | |
6151 | .rpc_client = clp->cl_rpcclient, | |
6152 | .rpc_message = &msg, | |
6153 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
6154 | .flags = RPC_TASK_ASYNC, | |
6155 | }; | |
6156 | int status = -ENOMEM; | |
6157 | ||
6158 | dprintk("--> %s\n", __func__); | |
8535b2be | 6159 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
6160 | if (calldata == NULL) |
6161 | goto out; | |
6162 | calldata->clp = clp; | |
6163 | calldata->arg.one_fs = 0; | |
fce5c838 | 6164 | |
9d12b216 | 6165 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
8fe72bac | 6166 | nfs4_set_sequence_privileged(&calldata->arg.seq_args); |
fce5c838 RL |
6167 | msg.rpc_argp = &calldata->arg; |
6168 | msg.rpc_resp = &calldata->res; | |
6169 | task_setup_data.callback_data = calldata; | |
6170 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 6171 | if (IS_ERR(task)) { |
fce5c838 | 6172 | status = PTR_ERR(task); |
acf82b85 DC |
6173 | goto out; |
6174 | } | |
c34c32ea AA |
6175 | status = nfs4_wait_for_completion_rpc_task(task); |
6176 | if (status == 0) | |
6177 | status = task->tk_status; | |
fce5c838 | 6178 | rpc_put_task(task); |
acf82b85 | 6179 | return 0; |
fce5c838 RL |
6180 | out: |
6181 | dprintk("<-- %s status=%d\n", __func__, status); | |
6182 | return status; | |
6183 | } | |
b1f69b75 AA |
6184 | |
6185 | static void | |
6186 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
6187 | { | |
6188 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 6189 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
6ba7db34 | 6190 | struct nfs4_session *session = nfs4_get_session(server); |
b1f69b75 AA |
6191 | |
6192 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
6193 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
6194 | * right now covering the LAYOUTGET we are about to send. | |
6195 | * However, that is not so catastrophic, and there seems | |
6196 | * to be no way to prevent it completely. | |
6197 | */ | |
6ba7db34 | 6198 | if (nfs41_setup_sequence(session, &lgp->args.seq_args, |
9d12b216 | 6199 | &lgp->res.seq_res, task)) |
b1f69b75 | 6200 | return; |
cf7d63f1 FI |
6201 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
6202 | NFS_I(lgp->args.inode)->layout, | |
6203 | lgp->args.ctx->state)) { | |
6204 | rpc_exit(task, NFS4_OK); | |
cf7d63f1 | 6205 | } |
b1f69b75 AA |
6206 | } |
6207 | ||
6208 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
6209 | { | |
6210 | struct nfs4_layoutget *lgp = calldata; | |
ee314c2a TM |
6211 | struct inode *inode = lgp->args.inode; |
6212 | struct nfs_server *server = NFS_SERVER(inode); | |
6213 | struct pnfs_layout_hdr *lo; | |
6214 | struct nfs4_state *state = NULL; | |
30005121 | 6215 | unsigned long timeo, giveup; |
b1f69b75 AA |
6216 | |
6217 | dprintk("--> %s\n", __func__); | |
6218 | ||
6ba7db34 | 6219 | if (!nfs41_sequence_done(task, &lgp->res.seq_res)) |
ee314c2a | 6220 | goto out; |
b1f69b75 AA |
6221 | |
6222 | switch (task->tk_status) { | |
6223 | case 0: | |
ee314c2a | 6224 | goto out; |
b1f69b75 AA |
6225 | case -NFS4ERR_LAYOUTTRYLATER: |
6226 | case -NFS4ERR_RECALLCONFLICT: | |
30005121 WAA |
6227 | timeo = rpc_get_timeout(task->tk_client); |
6228 | giveup = lgp->args.timestamp + timeo; | |
6229 | if (time_after(giveup, jiffies)) | |
6230 | task->tk_status = -NFS4ERR_DELAY; | |
ee314c2a TM |
6231 | break; |
6232 | case -NFS4ERR_EXPIRED: | |
6233 | case -NFS4ERR_BAD_STATEID: | |
6234 | spin_lock(&inode->i_lock); | |
6235 | lo = NFS_I(inode)->layout; | |
6236 | if (!lo || list_empty(&lo->plh_segs)) { | |
6237 | spin_unlock(&inode->i_lock); | |
6238 | /* If the open stateid was bad, then recover it. */ | |
6239 | state = lgp->args.ctx->state; | |
6240 | } else { | |
6241 | LIST_HEAD(head); | |
6242 | ||
6243 | pnfs_mark_matching_lsegs_invalid(lo, &head, NULL); | |
6244 | spin_unlock(&inode->i_lock); | |
6245 | /* Mark the bad layout state as invalid, then | |
6246 | * retry using the open stateid. */ | |
6247 | pnfs_free_lseg_list(&head); | |
b1f69b75 AA |
6248 | } |
6249 | } | |
ee314c2a TM |
6250 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
6251 | rpc_restart_call_prepare(task); | |
6252 | out: | |
b1f69b75 AA |
6253 | dprintk("<-- %s\n", __func__); |
6254 | } | |
6255 | ||
8554116e IK |
6256 | static size_t max_response_pages(struct nfs_server *server) |
6257 | { | |
6258 | u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; | |
6259 | return nfs_page_array_len(0, max_resp_sz); | |
6260 | } | |
6261 | ||
6262 | static void nfs4_free_pages(struct page **pages, size_t size) | |
6263 | { | |
6264 | int i; | |
6265 | ||
6266 | if (!pages) | |
6267 | return; | |
6268 | ||
6269 | for (i = 0; i < size; i++) { | |
6270 | if (!pages[i]) | |
6271 | break; | |
6272 | __free_page(pages[i]); | |
6273 | } | |
6274 | kfree(pages); | |
6275 | } | |
6276 | ||
6277 | static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags) | |
6278 | { | |
6279 | struct page **pages; | |
6280 | int i; | |
6281 | ||
6282 | pages = kcalloc(size, sizeof(struct page *), gfp_flags); | |
6283 | if (!pages) { | |
6284 | dprintk("%s: can't alloc array of %zu pages\n", __func__, size); | |
6285 | return NULL; | |
6286 | } | |
6287 | ||
6288 | for (i = 0; i < size; i++) { | |
6289 | pages[i] = alloc_page(gfp_flags); | |
6290 | if (!pages[i]) { | |
6291 | dprintk("%s: failed to allocate page\n", __func__); | |
6292 | nfs4_free_pages(pages, size); | |
6293 | return NULL; | |
6294 | } | |
6295 | } | |
6296 | ||
6297 | return pages; | |
6298 | } | |
6299 | ||
b1f69b75 AA |
6300 | static void nfs4_layoutget_release(void *calldata) |
6301 | { | |
6302 | struct nfs4_layoutget *lgp = calldata; | |
a47970ff WAA |
6303 | struct inode *inode = lgp->args.inode; |
6304 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 6305 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
6306 | |
6307 | dprintk("--> %s\n", __func__); | |
8554116e | 6308 | nfs4_free_pages(lgp->args.layout.pages, max_pages); |
a47970ff | 6309 | pnfs_put_layout_hdr(NFS_I(inode)->layout); |
b1f69b75 AA |
6310 | put_nfs_open_context(lgp->args.ctx); |
6311 | kfree(calldata); | |
6312 | dprintk("<-- %s\n", __func__); | |
6313 | } | |
6314 | ||
6315 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
6316 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
6317 | .rpc_call_done = nfs4_layoutget_done, | |
6318 | .rpc_release = nfs4_layoutget_release, | |
6319 | }; | |
6320 | ||
a0b0a6e3 TM |
6321 | struct pnfs_layout_segment * |
6322 | nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags) | |
b1f69b75 | 6323 | { |
a47970ff WAA |
6324 | struct inode *inode = lgp->args.inode; |
6325 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 6326 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
6327 | struct rpc_task *task; |
6328 | struct rpc_message msg = { | |
6329 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
6330 | .rpc_argp = &lgp->args, | |
6331 | .rpc_resp = &lgp->res, | |
6332 | }; | |
6333 | struct rpc_task_setup task_setup_data = { | |
6334 | .rpc_client = server->client, | |
6335 | .rpc_message = &msg, | |
6336 | .callback_ops = &nfs4_layoutget_call_ops, | |
6337 | .callback_data = lgp, | |
6338 | .flags = RPC_TASK_ASYNC, | |
6339 | }; | |
a0b0a6e3 | 6340 | struct pnfs_layout_segment *lseg = NULL; |
b1f69b75 AA |
6341 | int status = 0; |
6342 | ||
6343 | dprintk("--> %s\n", __func__); | |
6344 | ||
8554116e IK |
6345 | lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags); |
6346 | if (!lgp->args.layout.pages) { | |
6347 | nfs4_layoutget_release(lgp); | |
a0b0a6e3 | 6348 | return ERR_PTR(-ENOMEM); |
8554116e IK |
6349 | } |
6350 | lgp->args.layout.pglen = max_pages * PAGE_SIZE; | |
30005121 | 6351 | lgp->args.timestamp = jiffies; |
8554116e | 6352 | |
35124a09 | 6353 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 6354 | lgp->res.seq_res.sr_slot = NULL; |
9d12b216 | 6355 | nfs41_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
a47970ff WAA |
6356 | |
6357 | /* nfs4_layoutget_release calls pnfs_put_layout_hdr */ | |
6358 | pnfs_get_layout_hdr(NFS_I(inode)->layout); | |
6359 | ||
b1f69b75 AA |
6360 | task = rpc_run_task(&task_setup_data); |
6361 | if (IS_ERR(task)) | |
a0b0a6e3 | 6362 | return ERR_CAST(task); |
b1f69b75 | 6363 | status = nfs4_wait_for_completion_rpc_task(task); |
c31663d4 FI |
6364 | if (status == 0) |
6365 | status = task->tk_status; | |
085b7a45 WAA |
6366 | /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */ |
6367 | if (status == 0 && lgp->res.layoutp->len) | |
a0b0a6e3 | 6368 | lseg = pnfs_layout_process(lgp); |
b1f69b75 AA |
6369 | rpc_put_task(task); |
6370 | dprintk("<-- %s status=%d\n", __func__, status); | |
a0b0a6e3 TM |
6371 | if (status) |
6372 | return ERR_PTR(status); | |
6373 | return lseg; | |
b1f69b75 AA |
6374 | } |
6375 | ||
cbe82603 BH |
6376 | static void |
6377 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
6378 | { | |
6379 | struct nfs4_layoutreturn *lrp = calldata; | |
6380 | ||
6381 | dprintk("--> %s\n", __func__); | |
d9afbd1b TM |
6382 | nfs41_setup_sequence(lrp->clp->cl_session, |
6383 | &lrp->args.seq_args, | |
6384 | &lrp->res.seq_res, | |
6385 | task); | |
cbe82603 BH |
6386 | } |
6387 | ||
6388 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
6389 | { | |
6390 | struct nfs4_layoutreturn *lrp = calldata; | |
6391 | struct nfs_server *server; | |
6392 | ||
6393 | dprintk("--> %s\n", __func__); | |
6394 | ||
6ba7db34 | 6395 | if (!nfs41_sequence_done(task, &lrp->res.seq_res)) |
cbe82603 BH |
6396 | return; |
6397 | ||
6398 | server = NFS_SERVER(lrp->args.inode); | |
6399 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 6400 | rpc_restart_call_prepare(task); |
cbe82603 BH |
6401 | return; |
6402 | } | |
cbe82603 BH |
6403 | dprintk("<-- %s\n", __func__); |
6404 | } | |
6405 | ||
6406 | static void nfs4_layoutreturn_release(void *calldata) | |
6407 | { | |
6408 | struct nfs4_layoutreturn *lrp = calldata; | |
849b286f | 6409 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
6410 | |
6411 | dprintk("--> %s\n", __func__); | |
849b286f TM |
6412 | spin_lock(&lo->plh_inode->i_lock); |
6413 | if (lrp->res.lrs_present) | |
6414 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); | |
6415 | lo->plh_block_lgets--; | |
6416 | spin_unlock(&lo->plh_inode->i_lock); | |
70c3bd2b | 6417 | pnfs_put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
6418 | kfree(calldata); |
6419 | dprintk("<-- %s\n", __func__); | |
6420 | } | |
6421 | ||
6422 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
6423 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
6424 | .rpc_call_done = nfs4_layoutreturn_done, | |
6425 | .rpc_release = nfs4_layoutreturn_release, | |
6426 | }; | |
6427 | ||
6428 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
6429 | { | |
6430 | struct rpc_task *task; | |
6431 | struct rpc_message msg = { | |
6432 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
6433 | .rpc_argp = &lrp->args, | |
6434 | .rpc_resp = &lrp->res, | |
6435 | }; | |
6436 | struct rpc_task_setup task_setup_data = { | |
6437 | .rpc_client = lrp->clp->cl_rpcclient, | |
6438 | .rpc_message = &msg, | |
6439 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
6440 | .callback_data = lrp, | |
6441 | }; | |
6442 | int status; | |
6443 | ||
6444 | dprintk("--> %s\n", __func__); | |
9d12b216 | 6445 | nfs41_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
6446 | task = rpc_run_task(&task_setup_data); |
6447 | if (IS_ERR(task)) | |
6448 | return PTR_ERR(task); | |
6449 | status = task->tk_status; | |
6450 | dprintk("<-- %s status=%d\n", __func__, status); | |
6451 | rpc_put_task(task); | |
6452 | return status; | |
6453 | } | |
6454 | ||
7f11d8d3 AA |
6455 | /* |
6456 | * Retrieve the list of Data Server devices from the MDS. | |
6457 | */ | |
6458 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
6459 | const struct nfs_fh *fh, | |
6460 | struct pnfs_devicelist *devlist) | |
6461 | { | |
6462 | struct nfs4_getdevicelist_args args = { | |
6463 | .fh = fh, | |
6464 | .layoutclass = server->pnfs_curr_ld->id, | |
6465 | }; | |
6466 | struct nfs4_getdevicelist_res res = { | |
6467 | .devlist = devlist, | |
6468 | }; | |
6469 | struct rpc_message msg = { | |
6470 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
6471 | .rpc_argp = &args, | |
6472 | .rpc_resp = &res, | |
6473 | }; | |
6474 | int status; | |
6475 | ||
6476 | dprintk("--> %s\n", __func__); | |
6477 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
6478 | &res.seq_res, 0); | |
6479 | dprintk("<-- %s status=%d\n", __func__, status); | |
6480 | return status; | |
6481 | } | |
6482 | ||
6483 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
6484 | const struct nfs_fh *fh, | |
6485 | struct pnfs_devicelist *devlist) | |
6486 | { | |
6487 | struct nfs4_exception exception = { }; | |
6488 | int err; | |
6489 | ||
6490 | do { | |
6491 | err = nfs4_handle_exception(server, | |
6492 | _nfs4_getdevicelist(server, fh, devlist), | |
6493 | &exception); | |
6494 | } while (exception.retry); | |
6495 | ||
6496 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
6497 | err, devlist->num_devs); | |
6498 | ||
6499 | return err; | |
6500 | } | |
6501 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
6502 | ||
b1f69b75 AA |
6503 | static int |
6504 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6505 | { | |
6506 | struct nfs4_getdeviceinfo_args args = { | |
6507 | .pdev = pdev, | |
6508 | }; | |
6509 | struct nfs4_getdeviceinfo_res res = { | |
6510 | .pdev = pdev, | |
6511 | }; | |
6512 | struct rpc_message msg = { | |
6513 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
6514 | .rpc_argp = &args, | |
6515 | .rpc_resp = &res, | |
6516 | }; | |
6517 | int status; | |
6518 | ||
6519 | dprintk("--> %s\n", __func__); | |
7c513058 | 6520 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
6521 | dprintk("<-- %s status=%d\n", __func__, status); |
6522 | ||
6523 | return status; | |
6524 | } | |
6525 | ||
6526 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6527 | { | |
6528 | struct nfs4_exception exception = { }; | |
6529 | int err; | |
6530 | ||
6531 | do { | |
6532 | err = nfs4_handle_exception(server, | |
6533 | _nfs4_proc_getdeviceinfo(server, pdev), | |
6534 | &exception); | |
6535 | } while (exception.retry); | |
6536 | return err; | |
6537 | } | |
6538 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
6539 | ||
863a3c6c AA |
6540 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
6541 | { | |
6542 | struct nfs4_layoutcommit_data *data = calldata; | |
6543 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6ba7db34 | 6544 | struct nfs4_session *session = nfs4_get_session(server); |
863a3c6c | 6545 | |
d9afbd1b TM |
6546 | nfs41_setup_sequence(session, |
6547 | &data->args.seq_args, | |
6548 | &data->res.seq_res, | |
6549 | task); | |
863a3c6c AA |
6550 | } |
6551 | ||
6552 | static void | |
6553 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
6554 | { | |
6555 | struct nfs4_layoutcommit_data *data = calldata; | |
6556 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6557 | ||
6ba7db34 | 6558 | if (!nfs41_sequence_done(task, &data->res.seq_res)) |
863a3c6c AA |
6559 | return; |
6560 | ||
6561 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
6562 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
6563 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
6564 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
6565 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 6566 | task->tk_status = 0; |
e59d27e0 TM |
6567 | break; |
6568 | case 0: | |
863a3c6c AA |
6569 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
6570 | data->res.fattr); | |
e59d27e0 TM |
6571 | break; |
6572 | default: | |
6573 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
6574 | rpc_restart_call_prepare(task); | |
6575 | return; | |
6576 | } | |
6577 | } | |
863a3c6c AA |
6578 | } |
6579 | ||
6580 | static void nfs4_layoutcommit_release(void *calldata) | |
6581 | { | |
6582 | struct nfs4_layoutcommit_data *data = calldata; | |
6583 | ||
db29c089 | 6584 | pnfs_cleanup_layoutcommit(data); |
863a3c6c AA |
6585 | put_rpccred(data->cred); |
6586 | kfree(data); | |
6587 | } | |
6588 | ||
6589 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
6590 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
6591 | .rpc_call_done = nfs4_layoutcommit_done, | |
6592 | .rpc_release = nfs4_layoutcommit_release, | |
6593 | }; | |
6594 | ||
6595 | int | |
ef311537 | 6596 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
6597 | { |
6598 | struct rpc_message msg = { | |
6599 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
6600 | .rpc_argp = &data->args, | |
6601 | .rpc_resp = &data->res, | |
6602 | .rpc_cred = data->cred, | |
6603 | }; | |
6604 | struct rpc_task_setup task_setup_data = { | |
6605 | .task = &data->task, | |
6606 | .rpc_client = NFS_CLIENT(data->args.inode), | |
6607 | .rpc_message = &msg, | |
6608 | .callback_ops = &nfs4_layoutcommit_ops, | |
6609 | .callback_data = data, | |
6610 | .flags = RPC_TASK_ASYNC, | |
6611 | }; | |
6612 | struct rpc_task *task; | |
6613 | int status = 0; | |
6614 | ||
6615 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
6616 | "lbw: %llu inode %lu\n", | |
6617 | data->task.tk_pid, sync, | |
6618 | data->args.lastbytewritten, | |
6619 | data->args.inode->i_ino); | |
6620 | ||
9d12b216 | 6621 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
6622 | task = rpc_run_task(&task_setup_data); |
6623 | if (IS_ERR(task)) | |
6624 | return PTR_ERR(task); | |
ef311537 | 6625 | if (sync == false) |
863a3c6c AA |
6626 | goto out; |
6627 | status = nfs4_wait_for_completion_rpc_task(task); | |
6628 | if (status != 0) | |
6629 | goto out; | |
6630 | status = task->tk_status; | |
6631 | out: | |
6632 | dprintk("%s: status %d\n", __func__, status); | |
6633 | rpc_put_task(task); | |
6634 | return status; | |
6635 | } | |
fca78d6d BS |
6636 | |
6637 | static int | |
6638 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6639 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6640 | { | |
6641 | struct nfs41_secinfo_no_name_args args = { | |
6642 | .style = SECINFO_STYLE_CURRENT_FH, | |
6643 | }; | |
6644 | struct nfs4_secinfo_res res = { | |
6645 | .flavors = flavors, | |
6646 | }; | |
6647 | struct rpc_message msg = { | |
6648 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
6649 | .rpc_argp = &args, | |
6650 | .rpc_resp = &res, | |
6651 | }; | |
6652 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); | |
6653 | } | |
6654 | ||
6655 | static int | |
6656 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6657 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6658 | { | |
6659 | struct nfs4_exception exception = { }; | |
6660 | int err; | |
6661 | do { | |
6662 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6663 | switch (err) { | |
6664 | case 0: | |
6665 | case -NFS4ERR_WRONGSEC: | |
6666 | case -NFS4ERR_NOTSUPP: | |
05e9cfb4 | 6667 | goto out; |
fca78d6d BS |
6668 | default: |
6669 | err = nfs4_handle_exception(server, err, &exception); | |
6670 | } | |
6671 | } while (exception.retry); | |
05e9cfb4 | 6672 | out: |
fca78d6d BS |
6673 | return err; |
6674 | } | |
6675 | ||
6676 | static int | |
6677 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
6678 | struct nfs_fsinfo *info) | |
6679 | { | |
6680 | int err; | |
6681 | struct page *page; | |
6682 | rpc_authflavor_t flavor; | |
6683 | struct nfs4_secinfo_flavors *flavors; | |
6684 | ||
6685 | page = alloc_page(GFP_KERNEL); | |
6686 | if (!page) { | |
6687 | err = -ENOMEM; | |
6688 | goto out; | |
6689 | } | |
6690 | ||
6691 | flavors = page_address(page); | |
6692 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6693 | ||
6694 | /* | |
6695 | * Fall back on "guess and check" method if | |
6696 | * the server doesn't support SECINFO_NO_NAME | |
6697 | */ | |
6698 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
6699 | err = nfs4_find_root_sec(server, fhandle, info); | |
6700 | goto out_freepage; | |
6701 | } | |
6702 | if (err) | |
6703 | goto out_freepage; | |
6704 | ||
6705 | flavor = nfs_find_best_sec(flavors); | |
6706 | if (err == 0) | |
6707 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
6708 | ||
6709 | out_freepage: | |
6710 | put_page(page); | |
6711 | if (err == -EACCES) | |
6712 | return -EPERM; | |
6713 | out: | |
6714 | return err; | |
6715 | } | |
1cab0652 BS |
6716 | |
6717 | static int _nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) | |
7d974794 BS |
6718 | { |
6719 | int status; | |
6720 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 6721 | .stateid = stateid, |
7d974794 BS |
6722 | }; |
6723 | struct nfs41_test_stateid_res res; | |
6724 | struct rpc_message msg = { | |
6725 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
6726 | .rpc_argp = &args, | |
6727 | .rpc_resp = &res, | |
6728 | }; | |
1cab0652 | 6729 | |
38527b15 | 6730 | dprintk("NFS call test_stateid %p\n", stateid); |
9d12b216 | 6731 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
8fe72bac TM |
6732 | nfs4_set_sequence_privileged(&args.seq_args); |
6733 | status = nfs4_call_sync_sequence(server->client, server, &msg, | |
6734 | &args.seq_args, &res.seq_res); | |
38527b15 CL |
6735 | if (status != NFS_OK) { |
6736 | dprintk("NFS reply test_stateid: failed, %d\n", status); | |
377e507d | 6737 | return status; |
38527b15 CL |
6738 | } |
6739 | dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status); | |
377e507d | 6740 | return -res.status; |
7d974794 BS |
6741 | } |
6742 | ||
38527b15 CL |
6743 | /** |
6744 | * nfs41_test_stateid - perform a TEST_STATEID operation | |
6745 | * | |
6746 | * @server: server / transport on which to perform the operation | |
6747 | * @stateid: state ID to test | |
6748 | * | |
6749 | * Returns NFS_OK if the server recognizes that "stateid" is valid. | |
6750 | * Otherwise a negative NFS4ERR value is returned if the operation | |
6751 | * failed or the state ID is not currently valid. | |
6752 | */ | |
1cab0652 | 6753 | static int nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
7d974794 BS |
6754 | { |
6755 | struct nfs4_exception exception = { }; | |
6756 | int err; | |
6757 | do { | |
377e507d CL |
6758 | err = _nfs41_test_stateid(server, stateid); |
6759 | if (err != -NFS4ERR_DELAY) | |
6760 | break; | |
6761 | nfs4_handle_exception(server, err, &exception); | |
7d974794 BS |
6762 | } while (exception.retry); |
6763 | return err; | |
6764 | } | |
9aeda35f | 6765 | |
1cab0652 | 6766 | static int _nfs4_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f | 6767 | { |
9aeda35f | 6768 | struct nfs41_free_stateid_args args = { |
1cab0652 | 6769 | .stateid = stateid, |
9aeda35f BS |
6770 | }; |
6771 | struct nfs41_free_stateid_res res; | |
6772 | struct rpc_message msg = { | |
6773 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
6774 | .rpc_argp = &args, | |
6775 | .rpc_resp = &res, | |
6776 | }; | |
38527b15 | 6777 | int status; |
9aeda35f | 6778 | |
38527b15 | 6779 | dprintk("NFS call free_stateid %p\n", stateid); |
9d12b216 | 6780 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
8fe72bac | 6781 | nfs4_set_sequence_privileged(&args.seq_args); |
38527b15 | 6782 | status = nfs4_call_sync_sequence(server->client, server, &msg, |
8fe72bac | 6783 | &args.seq_args, &res.seq_res); |
38527b15 CL |
6784 | dprintk("NFS reply free_stateid: %d\n", status); |
6785 | return status; | |
9aeda35f BS |
6786 | } |
6787 | ||
38527b15 CL |
6788 | /** |
6789 | * nfs41_free_stateid - perform a FREE_STATEID operation | |
6790 | * | |
6791 | * @server: server / transport on which to perform the operation | |
6792 | * @stateid: state ID to release | |
6793 | * | |
6794 | * Returns NFS_OK if the server freed "stateid". Otherwise a | |
6795 | * negative NFS4ERR value is returned. | |
6796 | */ | |
1cab0652 | 6797 | static int nfs41_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f BS |
6798 | { |
6799 | struct nfs4_exception exception = { }; | |
6800 | int err; | |
6801 | do { | |
377e507d CL |
6802 | err = _nfs4_free_stateid(server, stateid); |
6803 | if (err != -NFS4ERR_DELAY) | |
6804 | break; | |
6805 | nfs4_handle_exception(server, err, &exception); | |
9aeda35f BS |
6806 | } while (exception.retry); |
6807 | return err; | |
6808 | } | |
36281caa TM |
6809 | |
6810 | static bool nfs41_match_stateid(const nfs4_stateid *s1, | |
6811 | const nfs4_stateid *s2) | |
6812 | { | |
2d2f24ad | 6813 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
6814 | return false; |
6815 | ||
2d2f24ad | 6816 | if (s1->seqid == s2->seqid) |
36281caa | 6817 | return true; |
2d2f24ad | 6818 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
6819 | return true; |
6820 | ||
6821 | return false; | |
6822 | } | |
6823 | ||
557134a3 AA |
6824 | #endif /* CONFIG_NFS_V4_1 */ |
6825 | ||
36281caa TM |
6826 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
6827 | const nfs4_stateid *s2) | |
6828 | { | |
f597c537 | 6829 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
6830 | } |
6831 | ||
6832 | ||
17280175 | 6833 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 6834 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 6835 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
6836 | .recover_open = nfs4_open_reclaim, |
6837 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 6838 | .establish_clid = nfs4_init_clientid, |
90a16617 | 6839 | .get_clid_cred = nfs4_get_setclientid_cred, |
05f4c350 | 6840 | .detect_trunking = nfs40_discover_server_trunking, |
1da177e4 LT |
6841 | }; |
6842 | ||
591d71cb | 6843 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 6844 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
6845 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
6846 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
6847 | .recover_open = nfs4_open_reclaim, | |
6848 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 6849 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6850 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 6851 | .reclaim_complete = nfs41_proc_reclaim_complete, |
05f4c350 | 6852 | .detect_trunking = nfs41_discover_server_trunking, |
591d71cb AA |
6853 | }; |
6854 | #endif /* CONFIG_NFS_V4_1 */ | |
6855 | ||
17280175 | 6856 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
6857 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
6858 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
6859 | .recover_open = nfs4_open_expired, | |
6860 | .recover_lock = nfs4_lock_expired, | |
6861 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 6862 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
6863 | }; |
6864 | ||
6865 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 6866 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 6867 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 6868 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
6869 | .recover_open = nfs41_open_expired, |
6870 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 6871 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6872 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 6873 | }; |
591d71cb | 6874 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 6875 | |
17280175 | 6876 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 6877 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 6878 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 6879 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
6880 | }; |
6881 | ||
6882 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 6883 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 6884 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 6885 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 6886 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
6887 | }; |
6888 | #endif | |
6889 | ||
97dc1359 TM |
6890 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
6891 | .minor_version = 0, | |
39c6daae TM |
6892 | .init_caps = NFS_CAP_READDIRPLUS |
6893 | | NFS_CAP_ATOMIC_OPEN | |
6894 | | NFS_CAP_CHANGE_ATTR | |
6895 | | NFS_CAP_POSIX_LOCK, | |
97dc1359 | 6896 | .call_sync = _nfs4_call_sync, |
36281caa | 6897 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 6898 | .find_root_sec = nfs4_find_root_sec, |
c48f4f35 TM |
6899 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
6900 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
6901 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
6902 | }; |
6903 | ||
6904 | #if defined(CONFIG_NFS_V4_1) | |
6905 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
6906 | .minor_version = 1, | |
39c6daae TM |
6907 | .init_caps = NFS_CAP_READDIRPLUS |
6908 | | NFS_CAP_ATOMIC_OPEN | |
6909 | | NFS_CAP_CHANGE_ATTR | |
3b66486c | 6910 | | NFS_CAP_POSIX_LOCK |
49f9a0fa TM |
6911 | | NFS_CAP_STATEID_NFSV41 |
6912 | | NFS_CAP_ATOMIC_OPEN_V1, | |
104287cd | 6913 | .call_sync = nfs4_call_sync_sequence, |
36281caa | 6914 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 6915 | .find_root_sec = nfs41_find_root_sec, |
c48f4f35 TM |
6916 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
6917 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
6918 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
6919 | }; |
6920 | #endif | |
6921 | ||
97dc1359 TM |
6922 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
6923 | [0] = &nfs_v4_0_minor_ops, | |
6924 | #if defined(CONFIG_NFS_V4_1) | |
6925 | [1] = &nfs_v4_1_minor_ops, | |
6926 | #endif | |
6927 | }; | |
6928 | ||
73a79706 BS |
6929 | const struct inode_operations nfs4_dir_inode_operations = { |
6930 | .create = nfs_create, | |
6931 | .lookup = nfs_lookup, | |
6932 | .atomic_open = nfs_atomic_open, | |
6933 | .link = nfs_link, | |
6934 | .unlink = nfs_unlink, | |
6935 | .symlink = nfs_symlink, | |
6936 | .mkdir = nfs_mkdir, | |
6937 | .rmdir = nfs_rmdir, | |
6938 | .mknod = nfs_mknod, | |
6939 | .rename = nfs_rename, | |
6940 | .permission = nfs_permission, | |
6941 | .getattr = nfs_getattr, | |
6942 | .setattr = nfs_setattr, | |
6943 | .getxattr = generic_getxattr, | |
6944 | .setxattr = generic_setxattr, | |
6945 | .listxattr = generic_listxattr, | |
6946 | .removexattr = generic_removexattr, | |
6947 | }; | |
6948 | ||
92e1d5be | 6949 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
6950 | .permission = nfs_permission, |
6951 | .getattr = nfs_getattr, | |
6952 | .setattr = nfs_setattr, | |
64c2ce8b AK |
6953 | .getxattr = generic_getxattr, |
6954 | .setxattr = generic_setxattr, | |
6955 | .listxattr = generic_listxattr, | |
6956 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
6957 | }; |
6958 | ||
509de811 | 6959 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
6960 | .version = 4, /* protocol version */ |
6961 | .dentry_ops = &nfs4_dentry_operations, | |
6962 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 6963 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 6964 | .file_ops = &nfs4_file_operations, |
1da177e4 | 6965 | .getroot = nfs4_proc_get_root, |
281cad46 | 6966 | .submount = nfs4_submount, |
ff9099f2 | 6967 | .try_mount = nfs4_try_mount, |
1da177e4 LT |
6968 | .getattr = nfs4_proc_getattr, |
6969 | .setattr = nfs4_proc_setattr, | |
6970 | .lookup = nfs4_proc_lookup, | |
6971 | .access = nfs4_proc_access, | |
6972 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
6973 | .create = nfs4_proc_create, |
6974 | .remove = nfs4_proc_remove, | |
6975 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 6976 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 LT |
6977 | .unlink_done = nfs4_proc_unlink_done, |
6978 | .rename = nfs4_proc_rename, | |
d3d4152a | 6979 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 6980 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 6981 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
6982 | .link = nfs4_proc_link, |
6983 | .symlink = nfs4_proc_symlink, | |
6984 | .mkdir = nfs4_proc_mkdir, | |
6985 | .rmdir = nfs4_proc_remove, | |
6986 | .readdir = nfs4_proc_readdir, | |
6987 | .mknod = nfs4_proc_mknod, | |
6988 | .statfs = nfs4_proc_statfs, | |
6989 | .fsinfo = nfs4_proc_fsinfo, | |
6990 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 6991 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
6992 | .decode_dirent = nfs4_decode_dirent, |
6993 | .read_setup = nfs4_proc_read_setup, | |
1abb5088 | 6994 | .read_pageio_init = pnfs_pageio_init_read, |
ea7c3303 | 6995 | .read_rpc_prepare = nfs4_proc_read_rpc_prepare, |
ec06c096 | 6996 | .read_done = nfs4_read_done, |
1da177e4 | 6997 | .write_setup = nfs4_proc_write_setup, |
57208fa7 | 6998 | .write_pageio_init = pnfs_pageio_init_write, |
c6cb80d0 | 6999 | .write_rpc_prepare = nfs4_proc_write_rpc_prepare, |
788e7a89 | 7000 | .write_done = nfs4_write_done, |
1da177e4 | 7001 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 7002 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 7003 | .commit_done = nfs4_commit_done, |
1da177e4 | 7004 | .lock = nfs4_proc_lock, |
e50a1c2e | 7005 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 7006 | .close_context = nfs4_close_context, |
2b484297 | 7007 | .open_context = nfs4_atomic_open, |
011e2a7f | 7008 | .have_delegation = nfs4_have_delegation, |
57ec14c5 | 7009 | .return_delegation = nfs4_inode_return_delegation, |
6663ee7f | 7010 | .alloc_client = nfs4_alloc_client, |
45a52a02 | 7011 | .init_client = nfs4_init_client, |
cdb7eced | 7012 | .free_client = nfs4_free_client, |
1179acc6 BS |
7013 | .create_server = nfs4_create_server, |
7014 | .clone_server = nfs_clone_server, | |
1da177e4 LT |
7015 | }; |
7016 | ||
64c2ce8b AK |
7017 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
7018 | .prefix = XATTR_NAME_NFSV4_ACL, | |
7019 | .list = nfs4_xattr_list_nfs4_acl, | |
7020 | .get = nfs4_xattr_get_nfs4_acl, | |
7021 | .set = nfs4_xattr_set_nfs4_acl, | |
7022 | }; | |
7023 | ||
7024 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
7025 | &nfs4_xattr_nfs4_acl_handler, | |
7026 | NULL | |
7027 | }; | |
7028 | ||
1da177e4 LT |
7029 | /* |
7030 | * Local variables: | |
7031 | * c-basic-offset: 8 | |
7032 | * End: | |
7033 | */ |