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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/nfs/nfs4proc.c | |
3 | * | |
4 | * Client-side procedure declarations for NFSv4. | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
36 | */ | |
37 | ||
38 | #include <linux/mm.h> | |
1da177e4 LT |
39 | #include <linux/delay.h> |
40 | #include <linux/errno.h> | |
41 | #include <linux/string.h> | |
652f89f6 TM |
42 | #include <linux/ratelimit.h> |
43 | #include <linux/printk.h> | |
5a0e3ad6 | 44 | #include <linux/slab.h> |
1da177e4 LT |
45 | #include <linux/sunrpc/clnt.h> |
46 | #include <linux/nfs.h> | |
47 | #include <linux/nfs4.h> | |
48 | #include <linux/nfs_fs.h> | |
49 | #include <linux/nfs_page.h> | |
9b7160c5 | 50 | #include <linux/nfs_mount.h> |
1da177e4 | 51 | #include <linux/namei.h> |
02a913a7 | 52 | #include <linux/mount.h> |
99fe60d0 | 53 | #include <linux/module.h> |
6926afd1 | 54 | #include <linux/nfs_idmap.h> |
64c2ce8b | 55 | #include <linux/xattr.h> |
c7a360b0 | 56 | #include <linux/utsname.h> |
d310310c | 57 | #include <linux/freezer.h> |
1da177e4 | 58 | |
4ce79717 | 59 | #include "nfs4_fs.h" |
1da177e4 | 60 | #include "delegation.h" |
101070ca | 61 | #include "internal.h" |
006ea73e | 62 | #include "iostat.h" |
fc931582 | 63 | #include "callback.h" |
b1f69b75 | 64 | #include "pnfs.h" |
f092075d | 65 | #include "netns.h" |
73e39aaa | 66 | #include "nfs4session.h" |
de242c0b | 67 | #include "fscache.h" |
1da177e4 LT |
68 | |
69 | #define NFSDBG_FACILITY NFSDBG_PROC | |
70 | ||
2066fe89 | 71 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
72 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
73 | ||
cdd4e68b | 74 | struct nfs4_opendata; |
864472e9 | 75 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
b257957e | 76 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data); |
1da177e4 | 77 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
9e33bed5 | 78 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *); |
81934ddb | 79 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); |
bae36241 | 80 | static int nfs4_proc_getattr(struct nfs_server *, struct nfs_fh *, struct nfs_fattr *); |
9936781d | 81 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr); |
0ab64e0e TM |
82 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
83 | struct nfs_fattr *fattr, struct iattr *sattr, | |
84 | struct nfs4_state *state); | |
f062eb6c | 85 | #ifdef CONFIG_NFS_V4_1 |
1cab0652 BS |
86 | static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *); |
87 | static int nfs41_free_stateid(struct nfs_server *, nfs4_stateid *); | |
f062eb6c | 88 | #endif |
1da177e4 | 89 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 90 | static int nfs4_map_errors(int err) |
1da177e4 | 91 | { |
52567b03 TM |
92 | if (err >= -1000) |
93 | return err; | |
94 | switch (err) { | |
95 | case -NFS4ERR_RESOURCE: | |
30005121 WAA |
96 | case -NFS4ERR_LAYOUTTRYLATER: |
97 | case -NFS4ERR_RECALLCONFLICT: | |
52567b03 | 98 | return -EREMOTEIO; |
7ebb9315 BS |
99 | case -NFS4ERR_WRONGSEC: |
100 | return -EPERM; | |
3ddeb7c5 TM |
101 | case -NFS4ERR_BADOWNER: |
102 | case -NFS4ERR_BADNAME: | |
103 | return -EINVAL; | |
fb13bfa7 TM |
104 | case -NFS4ERR_SHARE_DENIED: |
105 | return -EACCES; | |
f25efd85 SD |
106 | case -NFS4ERR_MINOR_VERS_MISMATCH: |
107 | return -EPROTONOSUPPORT; | |
6168f62c WAA |
108 | case -NFS4ERR_ACCESS: |
109 | return -EACCES; | |
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: | |
b570a975 TM |
307 | if (inode != NULL && nfs4_have_delegation(inode, FMODE_READ)) { |
308 | nfs_remove_bad_delegation(inode); | |
309 | exception->retry = 1; | |
310 | break; | |
311 | } | |
9e33bed5 TM |
312 | if (state == NULL) |
313 | break; | |
5d422301 TM |
314 | ret = nfs4_schedule_stateid_recovery(server, state); |
315 | if (ret < 0) | |
316 | break; | |
0400a6b0 | 317 | goto wait_on_recovery; |
0ced63d1 | 318 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
319 | if (state != NULL) { |
320 | ret = nfs4_schedule_stateid_recovery(server, state); | |
321 | if (ret < 0) | |
322 | break; | |
323 | } | |
65de872e | 324 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 325 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
326 | nfs4_schedule_lease_recovery(clp); |
327 | goto wait_on_recovery; | |
03391693 | 328 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
329 | case -NFS4ERR_BADSESSION: |
330 | case -NFS4ERR_BADSLOT: | |
331 | case -NFS4ERR_BAD_HIGH_SLOT: | |
332 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
333 | case -NFS4ERR_DEADSESSION: | |
334 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
335 | case -NFS4ERR_SEQ_MISORDERED: | |
336 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
337 | errorcode); | |
9f594791 | 338 | nfs4_schedule_session_recovery(clp->cl_session, errorcode); |
399f11c3 | 339 | goto wait_on_recovery; |
03391693 | 340 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 341 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
342 | if (exception->timeout > HZ) { |
343 | /* We have retried a decent amount, time to | |
344 | * fail | |
345 | */ | |
346 | ret = -EBUSY; | |
347 | break; | |
348 | } | |
65de872e TM |
349 | case -NFS4ERR_GRACE: |
350 | case -NFS4ERR_DELAY: | |
351 | ret = nfs4_delay(server->client, &exception->timeout); | |
352 | if (ret != 0) | |
353 | break; | |
a8a4ae3a | 354 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
355 | case -NFS4ERR_OLD_STATEID: |
356 | exception->retry = 1; | |
b064eca2 TM |
357 | break; |
358 | case -NFS4ERR_BADOWNER: | |
359 | /* The following works around a Linux server bug! */ | |
360 | case -NFS4ERR_BADNAME: | |
361 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
362 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
363 | exception->retry = 1; | |
364 | printk(KERN_WARNING "NFS: v4 server %s " | |
365 | "does not accept raw " | |
366 | "uid/gids. " | |
367 | "Reenabling the idmapper.\n", | |
368 | server->nfs_client->cl_hostname); | |
369 | } | |
65de872e TM |
370 | } |
371 | /* We failed to handle the error */ | |
372 | return nfs4_map_errors(ret); | |
0400a6b0 | 373 | wait_on_recovery: |
a2c0b9e2 TM |
374 | ret = nfs4_wait_clnt_recover(clp); |
375 | if (ret == 0) | |
376 | exception->retry = 1; | |
377 | return ret; | |
65de872e TM |
378 | } |
379 | ||
380 | ||
452e9352 | 381 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 382 | { |
1da177e4 LT |
383 | spin_lock(&clp->cl_lock); |
384 | if (time_before(clp->cl_last_renewal,timestamp)) | |
385 | clp->cl_last_renewal = timestamp; | |
386 | spin_unlock(&clp->cl_lock); | |
387 | } | |
388 | ||
452e9352 TM |
389 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
390 | { | |
391 | do_renew_lease(server->nfs_client, timestamp); | |
392 | } | |
393 | ||
cccef3b9 AA |
394 | #if defined(CONFIG_NFS_V4_1) |
395 | ||
d185a334 | 396 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 | 397 | { |
e3725ec0 | 398 | struct nfs4_session *session; |
13615871 | 399 | struct nfs4_slot_table *tbl; |
c10e4498 | 400 | bool send_new_highest_used_slotid = false; |
13615871 | 401 | |
dfb4f309 | 402 | if (!res->sr_slot) { |
13615871 AA |
403 | /* just wake up the next guy waiting since |
404 | * we may have not consumed a slot after all */ | |
691daf3b | 405 | dprintk("%s: No slot\n", __func__); |
35dc1d74 | 406 | return; |
13615871 | 407 | } |
e3725ec0 TM |
408 | tbl = res->sr_slot->table; |
409 | session = tbl->session; | |
ea028ac9 | 410 | |
35dc1d74 | 411 | spin_lock(&tbl->slot_tbl_lock); |
c10e4498 TM |
412 | /* Be nice to the server: try to ensure that the last transmitted |
413 | * value for highest_user_slotid <= target_highest_slotid | |
414 | */ | |
415 | if (tbl->highest_used_slotid > tbl->target_highest_slotid) | |
416 | send_new_highest_used_slotid = true; | |
417 | ||
b75ad4cd TM |
418 | if (nfs41_wake_and_assign_slot(tbl, res->sr_slot)) { |
419 | send_new_highest_used_slotid = false; | |
420 | goto out_unlock; | |
421 | } | |
f4af6e2a | 422 | nfs4_free_slot(tbl, res->sr_slot); |
c10e4498 TM |
423 | |
424 | if (tbl->highest_used_slotid != NFS4_NO_SLOT) | |
425 | send_new_highest_used_slotid = false; | |
b75ad4cd | 426 | out_unlock: |
35dc1d74 | 427 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 428 | res->sr_slot = NULL; |
c10e4498 TM |
429 | if (send_new_highest_used_slotid) |
430 | nfs41_server_notify_highest_slotid_update(session->clp); | |
13615871 AA |
431 | } |
432 | ||
14516c3a | 433 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c | 434 | { |
e3725ec0 | 435 | struct nfs4_session *session; |
933602e3 | 436 | struct nfs4_slot *slot; |
14516c3a | 437 | struct nfs_client *clp; |
ac20d163 | 438 | bool interrupted = false; |
85563073 | 439 | int ret = 1; |
b0df806c | 440 | |
468f8613 BS |
441 | /* don't increment the sequence number if the task wasn't sent */ |
442 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
443 | goto out; |
444 | ||
933602e3 | 445 | slot = res->sr_slot; |
e3725ec0 | 446 | session = slot->table->session; |
933602e3 | 447 | |
ac20d163 TM |
448 | if (slot->interrupted) { |
449 | slot->interrupted = 0; | |
450 | interrupted = true; | |
451 | } | |
452 | ||
691daf3b | 453 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
454 | switch (res->sr_status) { |
455 | case 0: | |
b0df806c | 456 | /* Update the slot's sequence and clientid lease timer */ |
933602e3 | 457 | ++slot->seq_nr; |
e3725ec0 | 458 | clp = session->clp; |
8e63b6a8 | 459 | do_renew_lease(clp, res->sr_timestamp); |
0629e370 | 460 | /* Check sequence flags */ |
b4410c2f TM |
461 | if (res->sr_status_flags != 0) |
462 | nfs4_schedule_lease_recovery(clp); | |
464ee9f9 | 463 | nfs41_update_target_slotid(slot->table, slot, res); |
14516c3a | 464 | break; |
ac20d163 TM |
465 | case 1: |
466 | /* | |
467 | * sr_status remains 1 if an RPC level error occurred. | |
468 | * The server may or may not have processed the sequence | |
469 | * operation.. | |
470 | * Mark the slot as having hosted an interrupted RPC call. | |
471 | */ | |
472 | slot->interrupted = 1; | |
473 | goto out; | |
14516c3a TM |
474 | case -NFS4ERR_DELAY: |
475 | /* The server detected a resend of the RPC call and | |
476 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
477 | * of RFC5661. | |
478 | */ | |
df2fabff | 479 | dprintk("%s: slot=%u seq=%u: Operation in progress\n", |
dfb4f309 | 480 | __func__, |
df2fabff | 481 | slot->slot_nr, |
933602e3 | 482 | slot->seq_nr); |
14516c3a | 483 | goto out_retry; |
85563073 TM |
484 | case -NFS4ERR_BADSLOT: |
485 | /* | |
486 | * The slot id we used was probably retired. Try again | |
487 | * using a different slot id. | |
488 | */ | |
e8794440 TM |
489 | goto retry_nowait; |
490 | case -NFS4ERR_SEQ_MISORDERED: | |
ac20d163 TM |
491 | /* |
492 | * Was the last operation on this sequence interrupted? | |
493 | * If so, retry after bumping the sequence number. | |
494 | */ | |
495 | if (interrupted) { | |
496 | ++slot->seq_nr; | |
497 | goto retry_nowait; | |
498 | } | |
e8794440 TM |
499 | /* |
500 | * Could this slot have been previously retired? | |
501 | * If so, then the server may be expecting seq_nr = 1! | |
502 | */ | |
8e63b6a8 TM |
503 | if (slot->seq_nr != 1) { |
504 | slot->seq_nr = 1; | |
505 | goto retry_nowait; | |
506 | } | |
507 | break; | |
e8794440 TM |
508 | case -NFS4ERR_SEQ_FALSE_RETRY: |
509 | ++slot->seq_nr; | |
510 | goto retry_nowait; | |
14516c3a TM |
511 | default: |
512 | /* Just update the slot sequence no. */ | |
933602e3 | 513 | ++slot->seq_nr; |
b0df806c AA |
514 | } |
515 | out: | |
516 | /* The session may be reset by one of the error handlers. */ | |
517 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 518 | nfs41_sequence_free_slot(res); |
85563073 | 519 | return ret; |
e8794440 TM |
520 | retry_nowait: |
521 | if (rpc_restart_call_prepare(task)) { | |
522 | task->tk_status = 0; | |
523 | ret = 0; | |
524 | } | |
525 | goto out; | |
14516c3a | 526 | out_retry: |
d05dd4e9 | 527 | if (!rpc_restart_call(task)) |
14516c3a TM |
528 | goto out; |
529 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
530 | return 0; | |
b0df806c AA |
531 | } |
532 | ||
14516c3a TM |
533 | static int nfs4_sequence_done(struct rpc_task *task, |
534 | struct nfs4_sequence_res *res) | |
df896455 | 535 | { |
e3725ec0 | 536 | if (res->sr_slot == NULL) |
14516c3a TM |
537 | return 1; |
538 | return nfs41_sequence_done(task, res); | |
df896455 TM |
539 | } |
540 | ||
9d12b216 TM |
541 | static void nfs41_init_sequence(struct nfs4_sequence_args *args, |
542 | struct nfs4_sequence_res *res, int cache_reply) | |
543 | { | |
2b2fa717 | 544 | args->sa_slot = NULL; |
9d12b216 | 545 | args->sa_cache_this = 0; |
8fe72bac | 546 | args->sa_privileged = 0; |
9d12b216 TM |
547 | if (cache_reply) |
548 | args->sa_cache_this = 1; | |
9d12b216 TM |
549 | res->sr_slot = NULL; |
550 | } | |
551 | ||
8fe72bac TM |
552 | static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args) |
553 | { | |
554 | args->sa_privileged = 1; | |
555 | } | |
556 | ||
dc70d7b3 | 557 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
558 | struct nfs4_sequence_args *args, |
559 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
560 | struct rpc_task *task) |
561 | { | |
fbcd4abc AA |
562 | struct nfs4_slot *slot; |
563 | struct nfs4_slot_table *tbl; | |
fbcd4abc AA |
564 | |
565 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 566 | /* slot already allocated? */ |
dfb4f309 | 567 | if (res->sr_slot != NULL) |
d9afbd1b | 568 | goto out_success; |
ce5039c1 | 569 | |
fbcd4abc AA |
570 | tbl = &session->fc_slot_table; |
571 | ||
69d206b5 TM |
572 | task->tk_timeout = 0; |
573 | ||
fbcd4abc | 574 | spin_lock(&tbl->slot_tbl_lock); |
a2118c33 | 575 | if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) && |
8fe72bac | 576 | !args->sa_privileged) { |
0b1c8fc4 | 577 | /* The state manager will wait until the slot table is empty */ |
0b1c8fc4 | 578 | dprintk("%s session is draining\n", __func__); |
7b939a3f | 579 | goto out_sleep; |
689cf5c1 AB |
580 | } |
581 | ||
2dc03b7f | 582 | slot = nfs4_alloc_slot(tbl); |
69d206b5 TM |
583 | if (IS_ERR(slot)) { |
584 | /* If out of memory, try again in 1/4 second */ | |
585 | if (slot == ERR_PTR(-ENOMEM)) | |
586 | task->tk_timeout = HZ >> 2; | |
fbcd4abc | 587 | dprintk("<-- %s: no free slots\n", __func__); |
7b939a3f | 588 | goto out_sleep; |
fbcd4abc AA |
589 | } |
590 | spin_unlock(&tbl->slot_tbl_lock); | |
591 | ||
2b2fa717 | 592 | args->sa_slot = slot; |
fbcd4abc | 593 | |
2dc03b7f TM |
594 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, |
595 | slot->slot_nr, slot->seq_nr); | |
fbcd4abc | 596 | |
dfb4f309 | 597 | res->sr_slot = slot; |
8e63b6a8 | 598 | res->sr_timestamp = jiffies; |
2a6e26cd | 599 | res->sr_status_flags = 0; |
fbcd4abc AA |
600 | /* |
601 | * sr_status is only set in decode_sequence, and so will remain | |
602 | * set to 1 if an rpc level failure occurs. | |
603 | */ | |
604 | res->sr_status = 1; | |
d9afbd1b TM |
605 | out_success: |
606 | rpc_call_start(task); | |
ce5039c1 | 607 | return 0; |
7b939a3f | 608 | out_sleep: |
8fe72bac TM |
609 | /* Privileged tasks are queued with top priority */ |
610 | if (args->sa_privileged) | |
1e1093c7 TM |
611 | rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, |
612 | NULL, RPC_PRIORITY_PRIVILEGED); | |
613 | else | |
614 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
7b939a3f TM |
615 | spin_unlock(&tbl->slot_tbl_lock); |
616 | return -EAGAIN; | |
ce5039c1 | 617 | } |
dc70d7b3 | 618 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 619 | |
035168ab | 620 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
621 | struct nfs4_sequence_args *args, |
622 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
623 | struct rpc_task *task) |
624 | { | |
035168ab | 625 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
626 | int ret = 0; |
627 | ||
d9afbd1b TM |
628 | if (session == NULL) { |
629 | rpc_call_start(task); | |
035168ab | 630 | goto out; |
d9afbd1b | 631 | } |
035168ab | 632 | |
df2fabff | 633 | dprintk("--> %s clp %p session %p sr_slot %d\n", |
dfb4f309 | 634 | __func__, session->clp, session, res->sr_slot ? |
df2fabff | 635 | res->sr_slot->slot_nr : -1); |
ce5039c1 | 636 | |
9d12b216 | 637 | ret = nfs41_setup_sequence(session, args, res, task); |
ce5039c1 AA |
638 | out: |
639 | dprintk("<-- %s status=%d\n", __func__, ret); | |
640 | return ret; | |
641 | } | |
642 | ||
643 | struct nfs41_call_sync_data { | |
035168ab | 644 | const struct nfs_server *seq_server; |
ce5039c1 AA |
645 | struct nfs4_sequence_args *seq_args; |
646 | struct nfs4_sequence_res *seq_res; | |
ce5039c1 AA |
647 | }; |
648 | ||
649 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
650 | { | |
651 | struct nfs41_call_sync_data *data = calldata; | |
6ba7db34 | 652 | struct nfs4_session *session = nfs4_get_session(data->seq_server); |
ce5039c1 | 653 | |
035168ab TM |
654 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
655 | ||
d9afbd1b | 656 | nfs41_setup_sequence(session, data->seq_args, data->seq_res, task); |
ce5039c1 AA |
657 | } |
658 | ||
69ab40c4 AA |
659 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
660 | { | |
661 | struct nfs41_call_sync_data *data = calldata; | |
662 | ||
14516c3a | 663 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
664 | } |
665 | ||
17280175 | 666 | static const struct rpc_call_ops nfs41_call_sync_ops = { |
ce5039c1 | 667 | .rpc_call_prepare = nfs41_call_sync_prepare, |
69ab40c4 | 668 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
669 | }; |
670 | ||
7c513058 BS |
671 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
672 | struct nfs_server *server, | |
ce5039c1 AA |
673 | struct rpc_message *msg, |
674 | struct nfs4_sequence_args *args, | |
8fe72bac | 675 | struct nfs4_sequence_res *res) |
ce5039c1 AA |
676 | { |
677 | int ret; | |
678 | struct rpc_task *task; | |
679 | struct nfs41_call_sync_data data = { | |
035168ab | 680 | .seq_server = server, |
ce5039c1 AA |
681 | .seq_args = args, |
682 | .seq_res = res, | |
ce5039c1 AA |
683 | }; |
684 | struct rpc_task_setup task_setup = { | |
7c513058 | 685 | .rpc_client = clnt, |
ce5039c1 AA |
686 | .rpc_message = msg, |
687 | .callback_ops = &nfs41_call_sync_ops, | |
688 | .callback_data = &data | |
689 | }; | |
690 | ||
ce5039c1 AA |
691 | task = rpc_run_task(&task_setup); |
692 | if (IS_ERR(task)) | |
693 | ret = PTR_ERR(task); | |
694 | else { | |
695 | ret = task->tk_status; | |
696 | rpc_put_task(task); | |
697 | } | |
698 | return ret; | |
699 | } | |
700 | ||
df896455 | 701 | #else |
8fe72bac | 702 | static |
9d12b216 TM |
703 | void nfs41_init_sequence(struct nfs4_sequence_args *args, |
704 | struct nfs4_sequence_res *res, int cache_reply) | |
705 | { | |
706 | } | |
707 | ||
8fe72bac TM |
708 | static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args) |
709 | { | |
710 | } | |
711 | ||
712 | ||
14516c3a TM |
713 | static int nfs4_sequence_done(struct rpc_task *task, |
714 | struct nfs4_sequence_res *res) | |
df896455 | 715 | { |
14516c3a | 716 | return 1; |
df896455 | 717 | } |
cccef3b9 AA |
718 | #endif /* CONFIG_NFS_V4_1 */ |
719 | ||
fd0c0953 | 720 | static |
7c513058 BS |
721 | int _nfs4_call_sync(struct rpc_clnt *clnt, |
722 | struct nfs_server *server, | |
cccef3b9 AA |
723 | struct rpc_message *msg, |
724 | struct nfs4_sequence_args *args, | |
fd0c0953 | 725 | struct nfs4_sequence_res *res) |
cccef3b9 | 726 | { |
7c513058 | 727 | return rpc_call_sync(clnt, msg, 0); |
cccef3b9 AA |
728 | } |
729 | ||
fd0c0953 | 730 | static |
7c513058 BS |
731 | int nfs4_call_sync(struct rpc_clnt *clnt, |
732 | struct nfs_server *server, | |
e73b83f2 BS |
733 | struct rpc_message *msg, |
734 | struct nfs4_sequence_args *args, | |
735 | struct nfs4_sequence_res *res, | |
736 | int cache_reply) | |
737 | { | |
fd0c0953 | 738 | nfs41_init_sequence(args, res, cache_reply); |
7c513058 | 739 | return server->nfs_client->cl_mvops->call_sync(clnt, server, msg, |
fd0c0953 | 740 | args, res); |
e73b83f2 | 741 | } |
cccef3b9 | 742 | |
38478b24 | 743 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 744 | { |
38478b24 | 745 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 746 | |
38478b24 | 747 | spin_lock(&dir->i_lock); |
359d7d1c | 748 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA; |
a9a4a87a | 749 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 750 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 751 | dir->i_version = cinfo->after; |
de242c0b | 752 | nfs_fscache_invalidate(dir); |
38478b24 | 753 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
754 | } |
755 | ||
e56e0b78 | 756 | struct nfs4_opendata { |
c6d00e63 | 757 | struct kref kref; |
e56e0b78 TM |
758 | struct nfs_openargs o_arg; |
759 | struct nfs_openres o_res; | |
cdd4e68b TM |
760 | struct nfs_open_confirmargs c_arg; |
761 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
762 | struct nfs4_string owner_name; |
763 | struct nfs4_string group_name; | |
e56e0b78 | 764 | struct nfs_fattr f_attr; |
e56e0b78 | 765 | struct dentry *dir; |
82a2c1b7 | 766 | struct dentry *dentry; |
e56e0b78 | 767 | struct nfs4_state_owner *owner; |
aac00a8d | 768 | struct nfs4_state *state; |
e56e0b78 | 769 | struct iattr attrs; |
26e976a8 | 770 | unsigned long timestamp; |
3e309914 | 771 | unsigned int rpc_done : 1; |
bdeca1b7 | 772 | unsigned int is_recover : 1; |
24ac23ab TM |
773 | int rpc_status; |
774 | int cancelled; | |
e56e0b78 TM |
775 | }; |
776 | ||
49f9a0fa TM |
777 | static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server *server, |
778 | int err, struct nfs4_exception *exception) | |
779 | { | |
780 | if (err != -EINVAL) | |
781 | return false; | |
782 | if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1)) | |
783 | return false; | |
784 | server->caps &= ~NFS_CAP_ATOMIC_OPEN_V1; | |
785 | exception->retry = 1; | |
786 | return true; | |
787 | } | |
788 | ||
789 | static enum open_claim_type4 | |
790 | nfs4_map_atomic_open_claim(struct nfs_server *server, | |
791 | enum open_claim_type4 claim) | |
792 | { | |
793 | if (server->caps & NFS_CAP_ATOMIC_OPEN_V1) | |
794 | return claim; | |
795 | switch (claim) { | |
796 | default: | |
797 | return claim; | |
798 | case NFS4_OPEN_CLAIM_FH: | |
799 | return NFS4_OPEN_CLAIM_NULL; | |
800 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
801 | return NFS4_OPEN_CLAIM_DELEGATE_CUR; | |
802 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
803 | return NFS4_OPEN_CLAIM_DELEGATE_PREV; | |
804 | } | |
805 | } | |
2ced46c2 TM |
806 | |
807 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
808 | { | |
809 | p->o_res.f_attr = &p->f_attr; | |
c1d51931 TM |
810 | p->o_res.seqid = p->o_arg.seqid; |
811 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 | 812 | p->o_res.server = p->o_arg.server; |
5f657530 | 813 | p->o_res.access_request = p->o_arg.access; |
2ced46c2 | 814 | nfs_fattr_init(&p->f_attr); |
6926afd1 | 815 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
816 | } |
817 | ||
82a2c1b7 | 818 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 819 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be | 820 | const struct iattr *attrs, |
4a1c0893 | 821 | enum open_claim_type4 claim, |
8535b2be | 822 | gfp_t gfp_mask) |
e56e0b78 | 823 | { |
82a2c1b7 | 824 | struct dentry *parent = dget_parent(dentry); |
e56e0b78 TM |
825 | struct inode *dir = parent->d_inode; |
826 | struct nfs_server *server = NFS_SERVER(dir); | |
827 | struct nfs4_opendata *p; | |
828 | ||
8535b2be | 829 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
830 | if (p == NULL) |
831 | goto err; | |
8535b2be | 832 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 TM |
833 | if (p->o_arg.seqid == NULL) |
834 | goto err_free; | |
82a2c1b7 AV |
835 | nfs_sb_active(dentry->d_sb); |
836 | p->dentry = dget(dentry); | |
e56e0b78 TM |
837 | p->dir = parent; |
838 | p->owner = sp; | |
839 | atomic_inc(&sp->so_count); | |
dc0b027d TM |
840 | p->o_arg.open_flags = flags; |
841 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
ae2bb032 WAA |
842 | /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS |
843 | * will return permission denied for all bits until close */ | |
844 | if (!(flags & O_EXCL)) { | |
845 | /* ask server to check for all possible rights as results | |
846 | * are cached */ | |
847 | p->o_arg.access = NFS4_ACCESS_READ | NFS4_ACCESS_MODIFY | | |
848 | NFS4_ACCESS_EXTEND | NFS4_ACCESS_EXECUTE; | |
ae2bb032 | 849 | } |
7539bbab | 850 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
95b72eb0 TM |
851 | p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time); |
852 | p->o_arg.id.uniquifier = sp->so_seqid.owner_id; | |
82a2c1b7 | 853 | p->o_arg.name = &dentry->d_name; |
e56e0b78 TM |
854 | p->o_arg.server = server; |
855 | p->o_arg.bitmask = server->attr_bitmask; | |
1549210f | 856 | p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0]; |
49f9a0fa TM |
857 | p->o_arg.claim = nfs4_map_atomic_open_claim(server, claim); |
858 | switch (p->o_arg.claim) { | |
4a1c0893 TM |
859 | case NFS4_OPEN_CLAIM_NULL: |
860 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
861 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
862 | p->o_arg.fh = NFS_FH(dir); | |
863 | break; | |
864 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
865 | case NFS4_OPEN_CLAIM_FH: | |
866 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
867 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
868 | p->o_arg.fh = NFS_FH(dentry->d_inode); | |
869 | } | |
536e43d1 | 870 | if (attrs != NULL && attrs->ia_valid != 0) { |
cd93710e | 871 | __be32 verf[2]; |
d77d76ff | 872 | |
e56e0b78 TM |
873 | p->o_arg.u.attrs = &p->attrs; |
874 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
cd93710e CL |
875 | |
876 | verf[0] = jiffies; | |
877 | verf[1] = current->pid; | |
878 | memcpy(p->o_arg.u.verifier.data, verf, | |
879 | sizeof(p->o_arg.u.verifier.data)); | |
e56e0b78 | 880 | } |
cdd4e68b TM |
881 | p->c_arg.fh = &p->o_res.fh; |
882 | p->c_arg.stateid = &p->o_res.stateid; | |
883 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 884 | nfs4_init_opendata_res(p); |
c6d00e63 | 885 | kref_init(&p->kref); |
e56e0b78 TM |
886 | return p; |
887 | err_free: | |
888 | kfree(p); | |
889 | err: | |
890 | dput(parent); | |
891 | return NULL; | |
892 | } | |
893 | ||
c6d00e63 | 894 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 895 | { |
c6d00e63 TM |
896 | struct nfs4_opendata *p = container_of(kref, |
897 | struct nfs4_opendata, kref); | |
82a2c1b7 | 898 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
899 | |
900 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
901 | if (p->state != NULL) |
902 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
903 | nfs4_put_state_owner(p->owner); |
904 | dput(p->dir); | |
82a2c1b7 AV |
905 | dput(p->dentry); |
906 | nfs_sb_deactive(sb); | |
6926afd1 | 907 | nfs_fattr_free_names(&p->f_attr); |
c6d00e63 TM |
908 | kfree(p); |
909 | } | |
910 | ||
911 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
912 | { | |
913 | if (p != NULL) | |
914 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
915 | } |
916 | ||
06f814a3 TM |
917 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
918 | { | |
06f814a3 TM |
919 | int ret; |
920 | ||
06f814a3 | 921 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
922 | return ret; |
923 | } | |
924 | ||
dc0b027d | 925 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
926 | { |
927 | int ret = 0; | |
dc0b027d | 928 | |
536e43d1 | 929 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
930 | goto out; |
931 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 932 | case FMODE_READ: |
88069f77 TM |
933 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
934 | && state->n_rdonly != 0; | |
6ee41268 TM |
935 | break; |
936 | case FMODE_WRITE: | |
88069f77 TM |
937 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
938 | && state->n_wronly != 0; | |
6ee41268 TM |
939 | break; |
940 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
941 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
942 | && state->n_rdwr != 0; | |
6ee41268 | 943 | } |
dc0b027d | 944 | out: |
6ee41268 TM |
945 | return ret; |
946 | } | |
947 | ||
dc0b027d | 948 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 949 | { |
652f89f6 TM |
950 | if (delegation == NULL) |
951 | return 0; | |
dc0b027d | 952 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 953 | return 0; |
15c831bf | 954 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 955 | return 0; |
d25be546 TM |
956 | if (test_bit(NFS_DELEGATION_RETURNING, &delegation->flags)) |
957 | return 0; | |
b7391f44 | 958 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
959 | return 1; |
960 | } | |
961 | ||
dc0b027d | 962 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 963 | { |
dc0b027d | 964 | switch (fmode) { |
e7616923 TM |
965 | case FMODE_WRITE: |
966 | state->n_wronly++; | |
967 | break; | |
968 | case FMODE_READ: | |
969 | state->n_rdonly++; | |
970 | break; | |
971 | case FMODE_READ|FMODE_WRITE: | |
972 | state->n_rdwr++; | |
973 | } | |
dc0b027d | 974 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
975 | } |
976 | ||
dc0b027d | 977 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
978 | { |
979 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
f597c537 TM |
980 | nfs4_stateid_copy(&state->stateid, stateid); |
981 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
92b40e93 | 982 | set_bit(NFS_OPEN_STATE, &state->flags); |
dc0b027d | 983 | switch (fmode) { |
003707c7 TM |
984 | case FMODE_READ: |
985 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
986 | break; | |
987 | case FMODE_WRITE: | |
988 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
989 | break; | |
990 | case FMODE_READ|FMODE_WRITE: | |
991 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
992 | } | |
e7616923 TM |
993 | } |
994 | ||
dc0b027d | 995 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 996 | { |
8bda4e4c | 997 | write_seqlock(&state->seqlock); |
dc0b027d | 998 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 999 | write_sequnlock(&state->seqlock); |
003707c7 TM |
1000 | } |
1001 | ||
dc0b027d | 1002 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 1003 | { |
8bda4e4c TM |
1004 | /* |
1005 | * Protect the call to nfs4_state_set_mode_locked and | |
1006 | * serialise the stateid update | |
1007 | */ | |
1008 | write_seqlock(&state->seqlock); | |
003707c7 | 1009 | if (deleg_stateid != NULL) { |
f597c537 | 1010 | nfs4_stateid_copy(&state->stateid, deleg_stateid); |
003707c7 TM |
1011 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
1012 | } | |
1013 | if (open_stateid != NULL) | |
dc0b027d | 1014 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
1015 | write_sequnlock(&state->seqlock); |
1016 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 1017 | update_open_stateflags(state, fmode); |
ec073428 | 1018 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
1019 | } |
1020 | ||
dc0b027d | 1021 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
1022 | { |
1023 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1024 | struct nfs_delegation *deleg_cur; | |
1025 | int ret = 0; | |
1026 | ||
dc0b027d | 1027 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
1028 | |
1029 | rcu_read_lock(); | |
1030 | deleg_cur = rcu_dereference(nfsi->delegation); | |
1031 | if (deleg_cur == NULL) | |
1032 | goto no_delegation; | |
1033 | ||
1034 | spin_lock(&deleg_cur->lock); | |
1035 | if (nfsi->delegation != deleg_cur || | |
d25be546 | 1036 | test_bit(NFS_DELEGATION_RETURNING, &deleg_cur->flags) || |
dc0b027d | 1037 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
1038 | goto no_delegation_unlock; |
1039 | ||
1040 | if (delegation == NULL) | |
1041 | delegation = &deleg_cur->stateid; | |
f597c537 | 1042 | else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) |
34310430 TM |
1043 | goto no_delegation_unlock; |
1044 | ||
b7391f44 | 1045 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 1046 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
1047 | ret = 1; |
1048 | no_delegation_unlock: | |
1049 | spin_unlock(&deleg_cur->lock); | |
1050 | no_delegation: | |
1051 | rcu_read_unlock(); | |
1052 | ||
1053 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 1054 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
1055 | ret = 1; |
1056 | } | |
1057 | ||
1058 | return ret; | |
1059 | } | |
1060 | ||
1061 | ||
dc0b027d | 1062 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1063 | { |
1064 | struct nfs_delegation *delegation; | |
1065 | ||
1066 | rcu_read_lock(); | |
1067 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1068 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1069 | rcu_read_unlock(); |
1070 | return; | |
1071 | } | |
1072 | rcu_read_unlock(); | |
57ec14c5 | 1073 | nfs4_inode_return_delegation(inode); |
aac00a8d TM |
1074 | } |
1075 | ||
6ee41268 | 1076 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1077 | { |
1078 | struct nfs4_state *state = opendata->state; | |
1079 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1080 | struct nfs_delegation *delegation; | |
536e43d1 | 1081 | int open_mode = opendata->o_arg.open_flags & (O_EXCL|O_TRUNC); |
dc0b027d | 1082 | fmode_t fmode = opendata->o_arg.fmode; |
aac00a8d TM |
1083 | nfs4_stateid stateid; |
1084 | int ret = -EAGAIN; | |
1085 | ||
aac00a8d | 1086 | for (;;) { |
dc0b027d | 1087 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 1088 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
1089 | if (can_open_cached(state, fmode, open_mode)) { |
1090 | update_open_stateflags(state, fmode); | |
6ee41268 | 1091 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
1092 | goto out_return_state; |
1093 | } | |
1094 | spin_unlock(&state->owner->so_lock); | |
1095 | } | |
34310430 TM |
1096 | rcu_read_lock(); |
1097 | delegation = rcu_dereference(nfsi->delegation); | |
652f89f6 | 1098 | if (!can_open_delegated(delegation, fmode)) { |
34310430 | 1099 | rcu_read_unlock(); |
aac00a8d | 1100 | break; |
34310430 | 1101 | } |
aac00a8d | 1102 | /* Save the delegation */ |
f597c537 | 1103 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1104 | rcu_read_unlock(); |
fa332941 | 1105 | nfs_release_seqid(opendata->o_arg.seqid); |
bdeca1b7 TM |
1106 | if (!opendata->is_recover) { |
1107 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); | |
1108 | if (ret != 0) | |
1109 | goto out; | |
1110 | } | |
aac00a8d | 1111 | ret = -EAGAIN; |
34310430 TM |
1112 | |
1113 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1114 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1115 | goto out_return_state; |
aac00a8d | 1116 | } |
aac00a8d TM |
1117 | out: |
1118 | return ERR_PTR(ret); | |
1119 | out_return_state: | |
1120 | atomic_inc(&state->count); | |
1121 | return state; | |
1122 | } | |
1123 | ||
e23008ec AA |
1124 | static void |
1125 | nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state) | |
1126 | { | |
1127 | struct nfs_client *clp = NFS_SERVER(state->inode)->nfs_client; | |
1128 | struct nfs_delegation *delegation; | |
1129 | int delegation_flags = 0; | |
1130 | ||
1131 | rcu_read_lock(); | |
1132 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
1133 | if (delegation) | |
1134 | delegation_flags = delegation->flags; | |
1135 | rcu_read_unlock(); | |
1136 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) { | |
1137 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " | |
1138 | "returning a delegation for " | |
1139 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
1140 | clp->cl_hostname); | |
1141 | } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) | |
1142 | nfs_inode_set_delegation(state->inode, | |
1143 | data->owner->so_cred, | |
1144 | &data->o_res); | |
1145 | else | |
1146 | nfs_inode_reclaim_delegation(state->inode, | |
1147 | data->owner->so_cred, | |
1148 | &data->o_res); | |
1149 | } | |
1150 | ||
1151 | /* | |
1152 | * Check the inode attributes against the CLAIM_PREVIOUS returned attributes | |
1153 | * and update the nfs4_state. | |
1154 | */ | |
1155 | static struct nfs4_state * | |
1156 | _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data) | |
1157 | { | |
1158 | struct inode *inode = data->state->inode; | |
1159 | struct nfs4_state *state = data->state; | |
1160 | int ret; | |
1161 | ||
1162 | if (!data->rpc_done) { | |
1163 | ret = data->rpc_status; | |
1164 | goto err; | |
1165 | } | |
1166 | ||
1167 | ret = -ESTALE; | |
1168 | if (!(data->f_attr.valid & NFS_ATTR_FATTR_TYPE) || | |
1169 | !(data->f_attr.valid & NFS_ATTR_FATTR_FILEID) || | |
1170 | !(data->f_attr.valid & NFS_ATTR_FATTR_CHANGE)) | |
1171 | goto err; | |
1172 | ||
1173 | ret = -ENOMEM; | |
1174 | state = nfs4_get_open_state(inode, data->owner); | |
1175 | if (state == NULL) | |
1176 | goto err; | |
1177 | ||
1178 | ret = nfs_refresh_inode(inode, &data->f_attr); | |
1179 | if (ret) | |
1180 | goto err; | |
1181 | ||
1182 | if (data->o_res.delegation_type != 0) | |
1183 | nfs4_opendata_check_deleg(data, state); | |
1184 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
1185 | data->o_arg.fmode); | |
1186 | ||
1187 | return state; | |
1188 | err: | |
1189 | return ERR_PTR(ret); | |
1190 | ||
1191 | } | |
1192 | ||
1193 | static struct nfs4_state * | |
1194 | _nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
24ac23ab TM |
1195 | { |
1196 | struct inode *inode; | |
1197 | struct nfs4_state *state = NULL; | |
1b370bc2 | 1198 | int ret; |
24ac23ab | 1199 | |
aac00a8d | 1200 | if (!data->rpc_done) { |
6ee41268 | 1201 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1202 | goto out; |
1203 | } | |
1204 | ||
1b370bc2 | 1205 | ret = -EAGAIN; |
24ac23ab | 1206 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1207 | goto err; |
24ac23ab | 1208 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 1209 | ret = PTR_ERR(inode); |
03f28e3a | 1210 | if (IS_ERR(inode)) |
1b370bc2 TM |
1211 | goto err; |
1212 | ret = -ENOMEM; | |
24ac23ab TM |
1213 | state = nfs4_get_open_state(inode, data->owner); |
1214 | if (state == NULL) | |
1b370bc2 | 1215 | goto err_put_inode; |
e23008ec AA |
1216 | if (data->o_res.delegation_type != 0) |
1217 | nfs4_opendata_check_deleg(data, state); | |
34310430 | 1218 | update_open_stateid(state, &data->o_res.stateid, NULL, |
dc0b027d | 1219 | data->o_arg.fmode); |
24ac23ab | 1220 | iput(inode); |
aac00a8d | 1221 | out: |
7aa262b5 | 1222 | nfs_release_seqid(data->o_arg.seqid); |
24ac23ab | 1223 | return state; |
1b370bc2 TM |
1224 | err_put_inode: |
1225 | iput(inode); | |
1226 | err: | |
1227 | return ERR_PTR(ret); | |
24ac23ab TM |
1228 | } |
1229 | ||
e23008ec AA |
1230 | static struct nfs4_state * |
1231 | nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
1232 | { | |
1233 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) | |
1234 | return _nfs4_opendata_reclaim_to_nfs4_state(data); | |
1235 | return _nfs4_opendata_to_nfs4_state(data); | |
1236 | } | |
1237 | ||
864472e9 TM |
1238 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1239 | { | |
1240 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1241 | struct nfs_open_context *ctx; | |
1242 | ||
1243 | spin_lock(&state->inode->i_lock); | |
1244 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1245 | if (ctx->state != state) | |
1246 | continue; | |
1247 | get_nfs_open_context(ctx); | |
1248 | spin_unlock(&state->inode->i_lock); | |
1249 | return ctx; | |
1250 | } | |
1251 | spin_unlock(&state->inode->i_lock); | |
1252 | return ERR_PTR(-ENOENT); | |
1253 | } | |
1254 | ||
4a1c0893 TM |
1255 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, |
1256 | struct nfs4_state *state, enum open_claim_type4 claim) | |
6f220ed5 TM |
1257 | { |
1258 | struct nfs4_opendata *opendata; | |
1259 | ||
4a1c0893 TM |
1260 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, |
1261 | NULL, claim, GFP_NOFS); | |
6f220ed5 TM |
1262 | if (opendata == NULL) |
1263 | return ERR_PTR(-ENOMEM); | |
1264 | opendata->state = state; | |
1265 | atomic_inc(&state->count); | |
1266 | return opendata; | |
1267 | } | |
1268 | ||
dc0b027d | 1269 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1270 | { |
2ced46c2 | 1271 | struct nfs4_state *newstate; |
864472e9 TM |
1272 | int ret; |
1273 | ||
dc0b027d TM |
1274 | opendata->o_arg.open_flags = 0; |
1275 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1276 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1277 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1278 | nfs4_init_opendata_res(opendata); | |
b257957e | 1279 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1280 | if (ret != 0) |
1281 | return ret; | |
2ced46c2 | 1282 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1283 | if (IS_ERR(newstate)) |
1284 | return PTR_ERR(newstate); | |
643168c2 | 1285 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1286 | *res = newstate; |
864472e9 TM |
1287 | return 0; |
1288 | } | |
1289 | ||
1290 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1291 | { | |
864472e9 | 1292 | struct nfs4_state *newstate; |
864472e9 TM |
1293 | int ret; |
1294 | ||
1295 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1296 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
fd068b20 | 1297 | clear_bit(NFS_OPEN_STATE, &state->flags); |
864472e9 TM |
1298 | smp_rmb(); |
1299 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1300 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1301 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1302 | if (ret != 0) |
1303 | return ret; | |
2ced46c2 TM |
1304 | if (newstate != state) |
1305 | return -ESTALE; | |
864472e9 TM |
1306 | } |
1307 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1308 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1309 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1310 | if (ret != 0) |
1311 | return ret; | |
2ced46c2 TM |
1312 | if (newstate != state) |
1313 | return -ESTALE; | |
864472e9 TM |
1314 | } |
1315 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1316 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1317 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1318 | if (ret != 0) |
1319 | return ret; | |
2ced46c2 TM |
1320 | if (newstate != state) |
1321 | return -ESTALE; | |
864472e9 | 1322 | } |
1ac7e2fd TM |
1323 | /* |
1324 | * We may have performed cached opens for all three recoveries. | |
1325 | * Check if we need to update the current stateid. | |
1326 | */ | |
1327 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 1328 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 1329 | write_seqlock(&state->seqlock); |
1ac7e2fd | 1330 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 1331 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 1332 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1333 | } |
864472e9 TM |
1334 | return 0; |
1335 | } | |
1336 | ||
1da177e4 LT |
1337 | /* |
1338 | * OPEN_RECLAIM: | |
1339 | * reclaim state on the server after a reboot. | |
1da177e4 | 1340 | */ |
539cd03a | 1341 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1342 | { |
1ac7e2fd | 1343 | struct nfs_delegation *delegation; |
864472e9 | 1344 | struct nfs4_opendata *opendata; |
dc0b027d | 1345 | fmode_t delegation_type = 0; |
1da177e4 LT |
1346 | int status; |
1347 | ||
4a1c0893 TM |
1348 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
1349 | NFS4_OPEN_CLAIM_PREVIOUS); | |
6f220ed5 TM |
1350 | if (IS_ERR(opendata)) |
1351 | return PTR_ERR(opendata); | |
1ac7e2fd TM |
1352 | rcu_read_lock(); |
1353 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1354 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1355 | delegation_type = delegation->type; |
1ac7e2fd | 1356 | rcu_read_unlock(); |
864472e9 TM |
1357 | opendata->o_arg.u.delegation_type = delegation_type; |
1358 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1359 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1360 | return status; |
1361 | } | |
1362 | ||
539cd03a | 1363 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1364 | { |
1365 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1366 | struct nfs4_exception exception = { }; | |
1367 | int err; | |
1368 | do { | |
539cd03a | 1369 | err = _nfs4_do_open_reclaim(ctx, state); |
49f9a0fa TM |
1370 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
1371 | continue; | |
168667c4 | 1372 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1373 | break; |
1374 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1375 | } while (exception.retry); |
1376 | return err; | |
1377 | } | |
1378 | ||
864472e9 TM |
1379 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1380 | { | |
1381 | struct nfs_open_context *ctx; | |
1382 | int ret; | |
1383 | ||
1384 | ctx = nfs4_state_find_open_context(state); | |
1385 | if (IS_ERR(ctx)) | |
91876b13 | 1386 | return -EAGAIN; |
539cd03a | 1387 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1388 | put_nfs_open_context(ctx); |
1389 | return ret; | |
1390 | } | |
1391 | ||
db4f2e63 | 1392 | static int nfs4_handle_delegation_recall_error(struct nfs_server *server, struct nfs4_state *state, const nfs4_stateid *stateid, int err) |
1da177e4 | 1393 | { |
be76b5b6 TM |
1394 | switch (err) { |
1395 | default: | |
1396 | printk(KERN_ERR "NFS: %s: unhandled error " | |
1397 | "%d.\n", __func__, err); | |
1398 | case 0: | |
1399 | case -ENOENT: | |
1400 | case -ESTALE: | |
1401 | break; | |
1402 | case -NFS4ERR_BADSESSION: | |
1403 | case -NFS4ERR_BADSLOT: | |
1404 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1405 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1406 | case -NFS4ERR_DEADSESSION: | |
1407 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1408 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); | |
1409 | return -EAGAIN; | |
1410 | case -NFS4ERR_STALE_CLIENTID: | |
1411 | case -NFS4ERR_STALE_STATEID: | |
1412 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1413 | case -NFS4ERR_EXPIRED: | |
1414 | /* Don't recall a delegation if it was lost */ | |
1415 | nfs4_schedule_lease_recovery(server->nfs_client); | |
1416 | return -EAGAIN; | |
1417 | case -NFS4ERR_DELEG_REVOKED: | |
1418 | case -NFS4ERR_ADMIN_REVOKED: | |
1419 | case -NFS4ERR_BAD_STATEID: | |
db4f2e63 | 1420 | case -NFS4ERR_OPENMODE: |
be76b5b6 TM |
1421 | nfs_inode_find_state_and_recover(state->inode, |
1422 | stateid); | |
1423 | nfs4_schedule_stateid_recovery(server, state); | |
be76b5b6 TM |
1424 | return 0; |
1425 | case -NFS4ERR_DELAY: | |
1426 | case -NFS4ERR_GRACE: | |
1427 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1428 | ssleep(1); | |
1429 | return -EAGAIN; | |
db4f2e63 TM |
1430 | case -ENOMEM: |
1431 | case -NFS4ERR_DENIED: | |
1432 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
1433 | return 0; | |
be76b5b6 | 1434 | } |
1da177e4 LT |
1435 | return err; |
1436 | } | |
1437 | ||
db4f2e63 TM |
1438 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1439 | { | |
1440 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1441 | struct nfs4_opendata *opendata; | |
1442 | int err; | |
1443 | ||
1444 | opendata = nfs4_open_recoverdata_alloc(ctx, state, | |
1445 | NFS4_OPEN_CLAIM_DELEG_CUR_FH); | |
1446 | if (IS_ERR(opendata)) | |
1447 | return PTR_ERR(opendata); | |
1448 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); | |
1449 | err = nfs4_open_recover(opendata, state); | |
1450 | nfs4_opendata_put(opendata); | |
1451 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); | |
1452 | } | |
1453 | ||
cdd4e68b TM |
1454 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1455 | { | |
1456 | struct nfs4_opendata *data = calldata; | |
1457 | ||
1458 | data->rpc_status = task->tk_status; | |
26e976a8 | 1459 | if (data->rpc_status == 0) { |
f597c537 | 1460 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 1461 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1462 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1463 | data->rpc_done = 1; |
26e976a8 | 1464 | } |
cdd4e68b TM |
1465 | } |
1466 | ||
1467 | static void nfs4_open_confirm_release(void *calldata) | |
1468 | { | |
1469 | struct nfs4_opendata *data = calldata; | |
1470 | struct nfs4_state *state = NULL; | |
1471 | ||
1472 | /* If this request hasn't been cancelled, do nothing */ | |
1473 | if (data->cancelled == 0) | |
1474 | goto out_free; | |
1475 | /* In case of error, no cleanup! */ | |
3e309914 | 1476 | if (!data->rpc_done) |
cdd4e68b | 1477 | goto out_free; |
cdd4e68b | 1478 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1479 | if (!IS_ERR(state)) |
643168c2 | 1480 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1481 | out_free: |
c6d00e63 | 1482 | nfs4_opendata_put(data); |
cdd4e68b TM |
1483 | } |
1484 | ||
1485 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1486 | .rpc_call_done = nfs4_open_confirm_done, |
1487 | .rpc_release = nfs4_open_confirm_release, | |
1488 | }; | |
1489 | ||
1490 | /* | |
1491 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1492 | */ | |
1493 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1494 | { | |
1495 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1496 | struct rpc_task *task; | |
5138fde0 TM |
1497 | struct rpc_message msg = { |
1498 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1499 | .rpc_argp = &data->c_arg, | |
1500 | .rpc_resp = &data->c_res, | |
1501 | .rpc_cred = data->owner->so_cred, | |
1502 | }; | |
c970aa85 TM |
1503 | struct rpc_task_setup task_setup_data = { |
1504 | .rpc_client = server->client, | |
5138fde0 | 1505 | .rpc_message = &msg, |
c970aa85 TM |
1506 | .callback_ops = &nfs4_open_confirm_ops, |
1507 | .callback_data = data, | |
101070ca | 1508 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1509 | .flags = RPC_TASK_ASYNC, |
1510 | }; | |
1da177e4 LT |
1511 | int status; |
1512 | ||
c6d00e63 | 1513 | kref_get(&data->kref); |
3e309914 TM |
1514 | data->rpc_done = 0; |
1515 | data->rpc_status = 0; | |
5138fde0 | 1516 | data->timestamp = jiffies; |
c970aa85 | 1517 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1518 | if (IS_ERR(task)) |
cdd4e68b | 1519 | return PTR_ERR(task); |
cdd4e68b TM |
1520 | status = nfs4_wait_for_completion_rpc_task(task); |
1521 | if (status != 0) { | |
1522 | data->cancelled = 1; | |
1523 | smp_wmb(); | |
1524 | } else | |
1525 | status = data->rpc_status; | |
e6b3c4db | 1526 | rpc_put_task(task); |
1da177e4 LT |
1527 | return status; |
1528 | } | |
1529 | ||
24ac23ab | 1530 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1531 | { |
24ac23ab TM |
1532 | struct nfs4_opendata *data = calldata; |
1533 | struct nfs4_state_owner *sp = data->owner; | |
549b19cc | 1534 | struct nfs_client *clp = sp->so_server->nfs_client; |
5138fde0 | 1535 | |
24ac23ab | 1536 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
c8da19b9 | 1537 | goto out_wait; |
aac00a8d TM |
1538 | /* |
1539 | * Check if we still need to send an OPEN call, or if we can use | |
1540 | * a delegation instead. | |
1541 | */ | |
1542 | if (data->state != NULL) { | |
1543 | struct nfs_delegation *delegation; | |
1544 | ||
dc0b027d | 1545 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1546 | goto out_no_action; |
aac00a8d TM |
1547 | rcu_read_lock(); |
1548 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
652f89f6 | 1549 | if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR && |
cd4c9be2 | 1550 | data->o_arg.claim != NFS4_OPEN_CLAIM_DELEG_CUR_FH && |
652f89f6 TM |
1551 | can_open_delegated(delegation, data->o_arg.fmode)) |
1552 | goto unlock_no_action; | |
aac00a8d TM |
1553 | rcu_read_unlock(); |
1554 | } | |
95b72eb0 | 1555 | /* Update client id. */ |
549b19cc | 1556 | data->o_arg.clientid = clp->cl_clientid; |
8188df17 TM |
1557 | switch (data->o_arg.claim) { |
1558 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1559 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1560 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
e23008ec | 1561 | data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0]; |
8188df17 TM |
1562 | case NFS4_OPEN_CLAIM_FH: |
1563 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; | |
6f220ed5 TM |
1564 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1565 | } | |
26e976a8 | 1566 | data->timestamp = jiffies; |
035168ab | 1567 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 1568 | &data->o_arg.seq_args, |
2240a9e2 TM |
1569 | &data->o_res.seq_res, |
1570 | task) != 0) | |
1571 | nfs_release_seqid(data->o_arg.seqid); | |
549b19cc TM |
1572 | |
1573 | /* Set the create mode (note dependency on the session type) */ | |
1574 | data->o_arg.createmode = NFS4_CREATE_UNCHECKED; | |
1575 | if (data->o_arg.open_flags & O_EXCL) { | |
1576 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE; | |
1577 | if (nfs4_has_persistent_session(clp)) | |
1578 | data->o_arg.createmode = NFS4_CREATE_GUARDED; | |
1579 | else if (clp->cl_mvops->minor_version > 0) | |
1580 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE4_1; | |
1581 | } | |
6ee41268 | 1582 | return; |
652f89f6 TM |
1583 | unlock_no_action: |
1584 | rcu_read_unlock(); | |
6ee41268 TM |
1585 | out_no_action: |
1586 | task->tk_action = NULL; | |
c8da19b9 | 1587 | out_wait: |
b75ad4cd | 1588 | nfs4_sequence_done(task, &data->o_res.seq_res); |
b257957e AB |
1589 | } |
1590 | ||
24ac23ab TM |
1591 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1592 | { | |
1593 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1594 | |
24ac23ab | 1595 | data->rpc_status = task->tk_status; |
d898528c | 1596 | |
14516c3a TM |
1597 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1598 | return; | |
d898528c | 1599 | |
24ac23ab | 1600 | if (task->tk_status == 0) { |
807d66d8 TM |
1601 | if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) { |
1602 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1603 | case S_IFREG: |
1604 | break; | |
1605 | case S_IFLNK: | |
24ac23ab | 1606 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1607 | break; |
1608 | case S_IFDIR: | |
24ac23ab | 1609 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1610 | break; |
1611 | default: | |
24ac23ab | 1612 | data->rpc_status = -ENOTDIR; |
807d66d8 | 1613 | } |
6f926b5b | 1614 | } |
26e976a8 | 1615 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1616 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1617 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1618 | } |
3e309914 | 1619 | data->rpc_done = 1; |
24ac23ab | 1620 | } |
6f926b5b | 1621 | |
24ac23ab TM |
1622 | static void nfs4_open_release(void *calldata) |
1623 | { | |
1624 | struct nfs4_opendata *data = calldata; | |
1625 | struct nfs4_state *state = NULL; | |
1626 | ||
1627 | /* If this request hasn't been cancelled, do nothing */ | |
1628 | if (data->cancelled == 0) | |
1629 | goto out_free; | |
1630 | /* In case of error, no cleanup! */ | |
3e309914 | 1631 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1632 | goto out_free; |
1633 | /* In case we need an open_confirm, no cleanup! */ | |
1634 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1635 | goto out_free; | |
24ac23ab | 1636 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1637 | if (!IS_ERR(state)) |
643168c2 | 1638 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1639 | out_free: |
c6d00e63 | 1640 | nfs4_opendata_put(data); |
24ac23ab TM |
1641 | } |
1642 | ||
1643 | static const struct rpc_call_ops nfs4_open_ops = { | |
1644 | .rpc_call_prepare = nfs4_open_prepare, | |
1645 | .rpc_call_done = nfs4_open_done, | |
1646 | .rpc_release = nfs4_open_release, | |
1647 | }; | |
1648 | ||
b257957e | 1649 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) |
24ac23ab TM |
1650 | { |
1651 | struct inode *dir = data->dir->d_inode; | |
1652 | struct nfs_server *server = NFS_SERVER(dir); | |
1653 | struct nfs_openargs *o_arg = &data->o_arg; | |
1654 | struct nfs_openres *o_res = &data->o_res; | |
1655 | struct rpc_task *task; | |
5138fde0 TM |
1656 | struct rpc_message msg = { |
1657 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1658 | .rpc_argp = o_arg, | |
1659 | .rpc_resp = o_res, | |
1660 | .rpc_cred = data->owner->so_cred, | |
1661 | }; | |
c970aa85 TM |
1662 | struct rpc_task_setup task_setup_data = { |
1663 | .rpc_client = server->client, | |
5138fde0 | 1664 | .rpc_message = &msg, |
c970aa85 TM |
1665 | .callback_ops = &nfs4_open_ops, |
1666 | .callback_data = data, | |
101070ca | 1667 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1668 | .flags = RPC_TASK_ASYNC, |
1669 | }; | |
24ac23ab TM |
1670 | int status; |
1671 | ||
9d12b216 | 1672 | nfs41_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 1673 | kref_get(&data->kref); |
3e309914 TM |
1674 | data->rpc_done = 0; |
1675 | data->rpc_status = 0; | |
2ced46c2 | 1676 | data->cancelled = 0; |
bdeca1b7 TM |
1677 | data->is_recover = 0; |
1678 | if (isrecover) { | |
8fe72bac | 1679 | nfs4_set_sequence_privileged(&o_arg->seq_args); |
bdeca1b7 TM |
1680 | data->is_recover = 1; |
1681 | } | |
c970aa85 | 1682 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1683 | if (IS_ERR(task)) |
1684 | return PTR_ERR(task); | |
1685 | status = nfs4_wait_for_completion_rpc_task(task); | |
1686 | if (status != 0) { | |
1687 | data->cancelled = 1; | |
1688 | smp_wmb(); | |
1689 | } else | |
1690 | status = data->rpc_status; | |
1691 | rpc_put_task(task); | |
1692 | ||
1693 | return status; | |
1694 | } | |
1695 | ||
1696 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1697 | { | |
1698 | struct inode *dir = data->dir->d_inode; | |
1699 | struct nfs_openres *o_res = &data->o_res; | |
1700 | int status; | |
1701 | ||
1702 | status = nfs4_run_open_task(data, 1); | |
1703 | if (status != 0 || !data->rpc_done) | |
1704 | return status; | |
1705 | ||
6926afd1 TM |
1706 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
1707 | ||
b257957e AB |
1708 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
1709 | status = _nfs4_proc_open_confirm(data); | |
1710 | if (status != 0) | |
1711 | return status; | |
1712 | } | |
1713 | ||
1714 | return status; | |
1715 | } | |
1716 | ||
6168f62c WAA |
1717 | static int nfs4_opendata_access(struct rpc_cred *cred, |
1718 | struct nfs4_opendata *opendata, | |
f8d9a897 WAA |
1719 | struct nfs4_state *state, fmode_t fmode, |
1720 | int openflags) | |
6168f62c WAA |
1721 | { |
1722 | struct nfs_access_entry cache; | |
1723 | u32 mask; | |
1724 | ||
1725 | /* access call failed or for some reason the server doesn't | |
1726 | * support any access modes -- defer access call until later */ | |
1727 | if (opendata->o_res.access_supported == 0) | |
1728 | return 0; | |
1729 | ||
1730 | mask = 0; | |
bbd3a8ee | 1731 | /* don't check MAY_WRITE - a newly created file may not have |
f8d9a897 WAA |
1732 | * write mode bits, but POSIX allows the creating process to write. |
1733 | * use openflags to check for exec, because fmode won't | |
1734 | * always have FMODE_EXEC set when file open for exec. */ | |
1735 | if (openflags & __FMODE_EXEC) { | |
1736 | /* ONLY check for exec rights */ | |
1737 | mask = MAY_EXEC; | |
1738 | } else if (fmode & FMODE_READ) | |
1739 | mask = MAY_READ; | |
6168f62c WAA |
1740 | |
1741 | cache.cred = cred; | |
1742 | cache.jiffies = jiffies; | |
1743 | nfs_access_set_mask(&cache, opendata->o_res.access_result); | |
1744 | nfs_access_add_cache(state->inode, &cache); | |
1745 | ||
bbd3a8ee | 1746 | if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0) |
6168f62c WAA |
1747 | return 0; |
1748 | ||
1749 | /* even though OPEN succeeded, access is denied. Close the file */ | |
1750 | nfs4_close_state(state, fmode); | |
998f40b5 | 1751 | return -EACCES; |
6168f62c WAA |
1752 | } |
1753 | ||
b257957e AB |
1754 | /* |
1755 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1756 | */ | |
1757 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1758 | { | |
1759 | struct inode *dir = data->dir->d_inode; | |
1760 | struct nfs_server *server = NFS_SERVER(dir); | |
1761 | struct nfs_openargs *o_arg = &data->o_arg; | |
1762 | struct nfs_openres *o_res = &data->o_res; | |
1763 | int status; | |
1764 | ||
1765 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
1766 | if (!data->rpc_done) |
1767 | return status; | |
1768 | if (status != 0) { | |
1769 | if (status == -NFS4ERR_BADNAME && | |
1770 | !(o_arg->open_flags & O_CREAT)) | |
1771 | return -ENOENT; | |
24ac23ab | 1772 | return status; |
08ef7bd3 | 1773 | } |
24ac23ab | 1774 | |
6926afd1 TM |
1775 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
1776 | ||
90ff0c54 | 1777 | if (o_arg->open_flags & O_CREAT) |
56ae19f3 | 1778 | update_changeattr(dir, &o_res->cinfo); |
0df5dd4a TM |
1779 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1780 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1781 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1782 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1783 | if (status != 0) |
24ac23ab | 1784 | return status; |
1da177e4 LT |
1785 | } |
1786 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1787 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1788 | return 0; |
1da177e4 LT |
1789 | } |
1790 | ||
d83217c1 AA |
1791 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1792 | { | |
1793 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1794 | } | |
1795 | ||
1da177e4 LT |
1796 | /* |
1797 | * OPEN_EXPIRED: | |
1798 | * reclaim state on the server after a network partition. | |
1799 | * Assumes caller holds the appropriate lock | |
1800 | */ | |
539cd03a | 1801 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1802 | { |
e56e0b78 | 1803 | struct nfs4_opendata *opendata; |
864472e9 | 1804 | int ret; |
1da177e4 | 1805 | |
4a1c0893 | 1806 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
49f9a0fa | 1807 | NFS4_OPEN_CLAIM_FH); |
6f220ed5 TM |
1808 | if (IS_ERR(opendata)) |
1809 | return PTR_ERR(opendata); | |
864472e9 | 1810 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1811 | if (ret == -ESTALE) |
3d4ff43d | 1812 | d_drop(ctx->dentry); |
c6d00e63 | 1813 | nfs4_opendata_put(opendata); |
864472e9 | 1814 | return ret; |
1da177e4 LT |
1815 | } |
1816 | ||
a9ed2e25 | 1817 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1818 | { |
539cd03a | 1819 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1820 | struct nfs4_exception exception = { }; |
1821 | int err; | |
1822 | ||
1823 | do { | |
539cd03a | 1824 | err = _nfs4_open_expired(ctx, state); |
49f9a0fa TM |
1825 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
1826 | continue; | |
a9ed2e25 TM |
1827 | switch (err) { |
1828 | default: | |
1829 | goto out; | |
1830 | case -NFS4ERR_GRACE: | |
1831 | case -NFS4ERR_DELAY: | |
1832 | nfs4_handle_exception(server, err, &exception); | |
1833 | err = 0; | |
1834 | } | |
202b50dc | 1835 | } while (exception.retry); |
a9ed2e25 | 1836 | out: |
202b50dc TM |
1837 | return err; |
1838 | } | |
1839 | ||
1da177e4 LT |
1840 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1841 | { | |
1da177e4 | 1842 | struct nfs_open_context *ctx; |
864472e9 | 1843 | int ret; |
1da177e4 | 1844 | |
864472e9 TM |
1845 | ctx = nfs4_state_find_open_context(state); |
1846 | if (IS_ERR(ctx)) | |
91876b13 | 1847 | return -EAGAIN; |
539cd03a | 1848 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1849 | put_nfs_open_context(ctx); |
1850 | return ret; | |
1da177e4 LT |
1851 | } |
1852 | ||
f062eb6c | 1853 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd | 1854 | static void nfs41_clear_delegation_stateid(struct nfs4_state *state) |
f062eb6c | 1855 | { |
f062eb6c | 1856 | struct nfs_server *server = NFS_SERVER(state->inode); |
3e60ffdd CL |
1857 | nfs4_stateid *stateid = &state->stateid; |
1858 | int status; | |
1859 | ||
1860 | /* If a state reset has been done, test_stateid is unneeded */ | |
1861 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
1862 | return; | |
1863 | ||
1864 | status = nfs41_test_stateid(server, stateid); | |
1865 | if (status != NFS_OK) { | |
1866 | /* Free the stateid unless the server explicitly | |
1867 | * informs us the stateid is unrecognized. */ | |
1868 | if (status != -NFS4ERR_BAD_STATEID) | |
1869 | nfs41_free_stateid(server, stateid); | |
6938867e | 1870 | nfs_remove_bad_delegation(state->inode); |
3e60ffdd | 1871 | |
6938867e BS |
1872 | write_seqlock(&state->seqlock); |
1873 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
1874 | write_sequnlock(&state->seqlock); | |
3e60ffdd CL |
1875 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
1876 | } | |
1877 | } | |
1878 | ||
1879 | /** | |
1880 | * nfs41_check_open_stateid - possibly free an open stateid | |
1881 | * | |
1882 | * @state: NFSv4 state for an inode | |
1883 | * | |
1884 | * Returns NFS_OK if recovery for this stateid is now finished. | |
1885 | * Otherwise a negative NFS4ERR value is returned. | |
1886 | */ | |
1887 | static int nfs41_check_open_stateid(struct nfs4_state *state) | |
1888 | { | |
1889 | struct nfs_server *server = NFS_SERVER(state->inode); | |
fcb6d9c6 | 1890 | nfs4_stateid *stateid = &state->open_stateid; |
3e60ffdd CL |
1891 | int status; |
1892 | ||
1893 | /* If a state reset has been done, test_stateid is unneeded */ | |
1894 | if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) && | |
1895 | (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) && | |
1896 | (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0)) | |
1897 | return -NFS4ERR_BAD_STATEID; | |
1898 | ||
1899 | status = nfs41_test_stateid(server, stateid); | |
1900 | if (status != NFS_OK) { | |
1901 | /* Free the stateid unless the server explicitly | |
1902 | * informs us the stateid is unrecognized. */ | |
1903 | if (status != -NFS4ERR_BAD_STATEID) | |
1904 | nfs41_free_stateid(server, stateid); | |
1905 | ||
1906 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1907 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1908 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
fd068b20 | 1909 | clear_bit(NFS_OPEN_STATE, &state->flags); |
b01dd1d8 BS |
1910 | } |
1911 | return status; | |
1912 | } | |
1913 | ||
1914 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
1915 | { | |
eb64cf96 | 1916 | int status; |
b01dd1d8 | 1917 | |
3e60ffdd CL |
1918 | nfs41_clear_delegation_stateid(state); |
1919 | status = nfs41_check_open_stateid(state); | |
eb64cf96 CL |
1920 | if (status != NFS_OK) |
1921 | status = nfs4_open_expired(sp, state); | |
1922 | return status; | |
f062eb6c BS |
1923 | } |
1924 | #endif | |
1925 | ||
aa53ed54 JL |
1926 | /* |
1927 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1928 | * fields corresponding to attributes that were used to store the verifier. | |
1929 | * Make sure we clobber those fields in the later setattr call | |
1930 | */ | |
1931 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1932 | { | |
1933 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1934 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1935 | sattr->ia_valid |= ATTR_ATIME; | |
1936 | ||
1937 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1938 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1939 | sattr->ia_valid |= ATTR_MTIME; | |
1940 | } | |
1941 | ||
c21443c2 TM |
1942 | static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, |
1943 | fmode_t fmode, | |
1944 | int flags, | |
1945 | struct nfs4_state **res) | |
1946 | { | |
1947 | struct nfs4_state_owner *sp = opendata->owner; | |
1948 | struct nfs_server *server = sp->so_server; | |
1949 | struct nfs4_state *state; | |
1950 | unsigned int seq; | |
1951 | int ret; | |
1952 | ||
1953 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); | |
1954 | ||
1955 | ret = _nfs4_proc_open(opendata); | |
1956 | if (ret != 0) | |
1957 | goto out; | |
1958 | ||
1959 | state = nfs4_opendata_to_nfs4_state(opendata); | |
1960 | ret = PTR_ERR(state); | |
1961 | if (IS_ERR(state)) | |
1962 | goto out; | |
1963 | if (server->caps & NFS_CAP_POSIX_LOCK) | |
1964 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); | |
1965 | ||
1966 | ret = nfs4_opendata_access(sp->so_cred, opendata, state, fmode, flags); | |
1967 | if (ret != 0) | |
1968 | goto out; | |
1969 | ||
91876b13 | 1970 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) |
c21443c2 | 1971 | nfs4_schedule_stateid_recovery(server, state); |
c21443c2 TM |
1972 | *res = state; |
1973 | out: | |
1974 | return ret; | |
1975 | } | |
1976 | ||
1da177e4 | 1977 | /* |
24ac23ab | 1978 | * Returns a referenced nfs4_state |
1da177e4 | 1979 | */ |
82be417a AA |
1980 | static int _nfs4_do_open(struct inode *dir, |
1981 | struct dentry *dentry, | |
1982 | fmode_t fmode, | |
1983 | int flags, | |
1984 | struct iattr *sattr, | |
1985 | struct rpc_cred *cred, | |
1986 | struct nfs4_state **res, | |
1987 | struct nfs4_threshold **ctx_th) | |
1da177e4 LT |
1988 | { |
1989 | struct nfs4_state_owner *sp; | |
1990 | struct nfs4_state *state = NULL; | |
1991 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1992 | struct nfs4_opendata *opendata; |
49f9a0fa | 1993 | enum open_claim_type4 claim = NFS4_OPEN_CLAIM_NULL; |
aac00a8d | 1994 | int status; |
1da177e4 LT |
1995 | |
1996 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 1997 | status = -ENOMEM; |
d1e284d5 TM |
1998 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
1999 | if (sp == NULL) { | |
1da177e4 LT |
2000 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
2001 | goto out_err; | |
2002 | } | |
58d9714a TM |
2003 | status = nfs4_recover_expired_lease(server); |
2004 | if (status != 0) | |
b4454fe1 | 2005 | goto err_put_state_owner; |
82a2c1b7 AV |
2006 | if (dentry->d_inode != NULL) |
2007 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 2008 | status = -ENOMEM; |
49f9a0fa TM |
2009 | if (dentry->d_inode) |
2010 | claim = NFS4_OPEN_CLAIM_FH; | |
4a1c0893 | 2011 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, |
49f9a0fa | 2012 | claim, GFP_KERNEL); |
e56e0b78 | 2013 | if (opendata == NULL) |
95d35cb4 | 2014 | goto err_put_state_owner; |
1da177e4 | 2015 | |
82be417a AA |
2016 | if (ctx_th && server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
2017 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
2018 | if (!opendata->f_attr.mdsthreshold) | |
2019 | goto err_opendata_put; | |
1549210f | 2020 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 2021 | } |
82a2c1b7 AV |
2022 | if (dentry->d_inode != NULL) |
2023 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 2024 | |
c21443c2 | 2025 | status = _nfs4_open_and_get_state(opendata, fmode, flags, &state); |
6168f62c WAA |
2026 | if (status != 0) |
2027 | goto err_opendata_put; | |
2028 | ||
549b19cc TM |
2029 | if ((opendata->o_arg.open_flags & O_EXCL) && |
2030 | (opendata->o_arg.createmode != NFS4_CREATE_GUARDED)) { | |
0ab64e0e TM |
2031 | nfs4_exclusive_attrset(opendata, sattr); |
2032 | ||
2033 | nfs_fattr_init(opendata->o_res.f_attr); | |
2034 | status = nfs4_do_setattr(state->inode, cred, | |
2035 | opendata->o_res.f_attr, sattr, | |
2036 | state); | |
2037 | if (status == 0) | |
2038 | nfs_setattr_update_inode(state->inode, sattr); | |
2039 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
2040 | } | |
82be417a AA |
2041 | |
2042 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) | |
2043 | *ctx_th = opendata->f_attr.mdsthreshold; | |
2044 | else | |
2045 | kfree(opendata->f_attr.mdsthreshold); | |
2046 | opendata->f_attr.mdsthreshold = NULL; | |
2047 | ||
c6d00e63 | 2048 | nfs4_opendata_put(opendata); |
1da177e4 | 2049 | nfs4_put_state_owner(sp); |
1da177e4 LT |
2050 | *res = state; |
2051 | return 0; | |
c6d00e63 | 2052 | err_opendata_put: |
82be417a | 2053 | kfree(opendata->f_attr.mdsthreshold); |
c6d00e63 | 2054 | nfs4_opendata_put(opendata); |
e56e0b78 TM |
2055 | err_put_state_owner: |
2056 | nfs4_put_state_owner(sp); | |
1da177e4 | 2057 | out_err: |
1da177e4 LT |
2058 | *res = NULL; |
2059 | return status; | |
2060 | } | |
2061 | ||
2062 | ||
82be417a AA |
2063 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
2064 | struct dentry *dentry, | |
2065 | fmode_t fmode, | |
2066 | int flags, | |
2067 | struct iattr *sattr, | |
2068 | struct rpc_cred *cred, | |
2069 | struct nfs4_threshold **ctx_th) | |
1da177e4 | 2070 | { |
49f9a0fa | 2071 | struct nfs_server *server = NFS_SERVER(dir); |
1da177e4 LT |
2072 | struct nfs4_exception exception = { }; |
2073 | struct nfs4_state *res; | |
2074 | int status; | |
2075 | ||
6168f62c | 2076 | fmode &= FMODE_READ|FMODE_WRITE|FMODE_EXEC; |
1da177e4 | 2077 | do { |
82be417a AA |
2078 | status = _nfs4_do_open(dir, dentry, fmode, flags, sattr, cred, |
2079 | &res, ctx_th); | |
1da177e4 LT |
2080 | if (status == 0) |
2081 | break; | |
2082 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
2083 | * book-keeping w.r.t. state-changing operations | |
2084 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
2085 | * It is actually a sign of a bug on the client or on the server. | |
2086 | * | |
2087 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 2088 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
2089 | * have unhashed the old state_owner for us, and that we can |
2090 | * therefore safely retry using a new one. We should still warn | |
2091 | * the user though... | |
2092 | */ | |
2093 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 2094 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
2095 | " returned a bad sequence-id error!\n", |
2096 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
2097 | exception.retry = 1; |
2098 | continue; | |
2099 | } | |
550f5747 TM |
2100 | /* |
2101 | * BAD_STATEID on OPEN means that the server cancelled our | |
2102 | * state before it received the OPEN_CONFIRM. | |
2103 | * Recover by retrying the request as per the discussion | |
2104 | * on Page 181 of RFC3530. | |
2105 | */ | |
2106 | if (status == -NFS4ERR_BAD_STATEID) { | |
2107 | exception.retry = 1; | |
2108 | continue; | |
2109 | } | |
aac00a8d TM |
2110 | if (status == -EAGAIN) { |
2111 | /* We must have found a delegation */ | |
2112 | exception.retry = 1; | |
2113 | continue; | |
2114 | } | |
49f9a0fa TM |
2115 | if (nfs4_clear_cap_atomic_open_v1(server, status, &exception)) |
2116 | continue; | |
2117 | res = ERR_PTR(nfs4_handle_exception(server, | |
1da177e4 LT |
2118 | status, &exception)); |
2119 | } while (exception.retry); | |
2120 | return res; | |
2121 | } | |
2122 | ||
659bfcd6 TM |
2123 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2124 | struct nfs_fattr *fattr, struct iattr *sattr, | |
2125 | struct nfs4_state *state) | |
1da177e4 | 2126 | { |
3e4f6290 | 2127 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 2128 | struct nfs_setattrargs arg = { |
3e4f6290 | 2129 | .fh = NFS_FH(inode), |
1da177e4 LT |
2130 | .iap = sattr, |
2131 | .server = server, | |
2132 | .bitmask = server->attr_bitmask, | |
2133 | }; | |
2134 | struct nfs_setattrres res = { | |
2135 | .fattr = fattr, | |
2136 | .server = server, | |
2137 | }; | |
2138 | struct rpc_message msg = { | |
659bfcd6 TM |
2139 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
2140 | .rpc_argp = &arg, | |
2141 | .rpc_resp = &res, | |
2142 | .rpc_cred = cred, | |
1da177e4 | 2143 | }; |
26e976a8 | 2144 | unsigned long timestamp = jiffies; |
ee3ae84e TM |
2145 | fmode_t fmode; |
2146 | bool truncate; | |
65e4308d | 2147 | int status; |
1da177e4 | 2148 | |
0e574af1 | 2149 | nfs_fattr_init(fattr); |
1da177e4 | 2150 | |
ee3ae84e TM |
2151 | /* Servers should only apply open mode checks for file size changes */ |
2152 | truncate = (sattr->ia_valid & ATTR_SIZE) ? true : false; | |
2153 | fmode = truncate ? FMODE_WRITE : FMODE_READ; | |
2154 | ||
2155 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode, fmode)) { | |
2156 | /* Use that stateid */ | |
2157 | } else if (truncate && state != NULL && nfs4_valid_open_stateid(state)) { | |
2a369153 TM |
2158 | struct nfs_lockowner lockowner = { |
2159 | .l_owner = current->files, | |
2160 | .l_pid = current->tgid, | |
2161 | }; | |
4fc8796d | 2162 | nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, |
2a369153 | 2163 | &lockowner); |
08e9eac4 | 2164 | } else |
f597c537 | 2165 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 2166 | |
7c513058 | 2167 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
2168 | if (status == 0 && state != NULL) |
2169 | renew_lease(server, timestamp); | |
65e4308d | 2170 | return status; |
1da177e4 LT |
2171 | } |
2172 | ||
659bfcd6 TM |
2173 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2174 | struct nfs_fattr *fattr, struct iattr *sattr, | |
2175 | struct nfs4_state *state) | |
1da177e4 | 2176 | { |
3e4f6290 | 2177 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
2178 | struct nfs4_exception exception = { |
2179 | .state = state, | |
3114ea7a | 2180 | .inode = inode, |
a1d0b5ee | 2181 | }; |
1da177e4 LT |
2182 | int err; |
2183 | do { | |
451146be TM |
2184 | err = _nfs4_do_setattr(inode, cred, fattr, sattr, state); |
2185 | switch (err) { | |
2186 | case -NFS4ERR_OPENMODE: | |
721ccfb7 TM |
2187 | if (!(sattr->ia_valid & ATTR_SIZE)) { |
2188 | pr_warn_once("NFSv4: server %s is incorrectly " | |
2189 | "applying open mode checks to " | |
2190 | "a SETATTR that is not " | |
2191 | "changing file size.\n", | |
2192 | server->nfs_client->cl_hostname); | |
2193 | } | |
451146be TM |
2194 | if (state && !(state->state & FMODE_WRITE)) { |
2195 | err = -EBADF; | |
2196 | if (sattr->ia_valid & ATTR_OPEN) | |
2197 | err = -EACCES; | |
2198 | goto out; | |
2199 | } | |
2200 | } | |
2201 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 2202 | } while (exception.retry); |
451146be | 2203 | out: |
1da177e4 LT |
2204 | return err; |
2205 | } | |
2206 | ||
2207 | struct nfs4_closedata { | |
2208 | struct inode *inode; | |
2209 | struct nfs4_state *state; | |
2210 | struct nfs_closeargs arg; | |
2211 | struct nfs_closeres res; | |
516a6af6 | 2212 | struct nfs_fattr fattr; |
26e976a8 | 2213 | unsigned long timestamp; |
f7e8917a FI |
2214 | bool roc; |
2215 | u32 roc_barrier; | |
1da177e4 LT |
2216 | }; |
2217 | ||
963d8fe5 | 2218 | static void nfs4_free_closedata(void *data) |
9512135d | 2219 | { |
963d8fe5 TM |
2220 | struct nfs4_closedata *calldata = data; |
2221 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 2222 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 2223 | |
f7e8917a FI |
2224 | if (calldata->roc) |
2225 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
2226 | nfs4_put_open_state(calldata->state); |
2227 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 2228 | nfs4_put_state_owner(sp); |
322b2b90 | 2229 | nfs_sb_deactive(sb); |
9512135d TM |
2230 | kfree(calldata); |
2231 | } | |
2232 | ||
88069f77 TM |
2233 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
2234 | fmode_t fmode) | |
2235 | { | |
2236 | spin_lock(&state->owner->so_lock); | |
fd068b20 TM |
2237 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2238 | switch (fmode & (FMODE_READ|FMODE_WRITE)) { | |
2239 | case FMODE_WRITE: | |
88069f77 | 2240 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
fd068b20 TM |
2241 | break; |
2242 | case FMODE_READ: | |
88069f77 | 2243 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
fd068b20 TM |
2244 | break; |
2245 | case 0: | |
2246 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2247 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2248 | clear_bit(NFS_OPEN_STATE, &state->flags); | |
2249 | } | |
88069f77 TM |
2250 | spin_unlock(&state->owner->so_lock); |
2251 | } | |
2252 | ||
963d8fe5 | 2253 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2254 | { |
963d8fe5 | 2255 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2256 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
2257 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
2258 | ||
a3ca5651 | 2259 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2260 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2261 | return; | |
1da177e4 LT |
2262 | /* hmm. we are done with the inode, and in the process of freeing |
2263 | * the state_owner. we keep this around to process errors | |
2264 | */ | |
1da177e4 LT |
2265 | switch (task->tk_status) { |
2266 | case 0: | |
f7e8917a FI |
2267 | if (calldata->roc) |
2268 | pnfs_roc_set_barrier(state->inode, | |
2269 | calldata->roc_barrier); | |
45328c35 | 2270 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 2271 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
2272 | nfs4_close_clear_stateid_flags(state, |
2273 | calldata->arg.fmode); | |
1da177e4 LT |
2274 | break; |
2275 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
2276 | case -NFS4ERR_OLD_STATEID: |
2277 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2278 | case -NFS4ERR_EXPIRED: |
dc0b027d | 2279 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2280 | break; |
1da177e4 | 2281 | default: |
72211dbe TM |
2282 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
2283 | rpc_restart_call_prepare(task); | |
1da177e4 | 2284 | } |
72211dbe | 2285 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2286 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2287 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2288 | } |
2289 | ||
4ce70ada | 2290 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2291 | { |
4ce70ada | 2292 | struct nfs4_closedata *calldata = data; |
9512135d | 2293 | struct nfs4_state *state = calldata->state; |
7fdab069 | 2294 | struct inode *inode = calldata->inode; |
88069f77 | 2295 | int call_close = 0; |
9512135d | 2296 | |
a3ca5651 | 2297 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2298 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 2299 | goto out_wait; |
003707c7 | 2300 | |
88069f77 TM |
2301 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
2302 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 2303 | spin_lock(&state->owner->so_lock); |
003707c7 | 2304 | /* Calculate the change in open mode */ |
e7616923 | 2305 | if (state->n_rdwr == 0) { |
003707c7 | 2306 | if (state->n_rdonly == 0) { |
88069f77 TM |
2307 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
2308 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2309 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
2310 | } |
2311 | if (state->n_wronly == 0) { | |
88069f77 TM |
2312 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
2313 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2314 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 2315 | } |
e7616923 | 2316 | } |
5d422301 TM |
2317 | if (!nfs4_valid_open_stateid(state)) |
2318 | call_close = 0; | |
4cecb76f | 2319 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2320 | |
2321 | if (!call_close) { | |
963d8fe5 | 2322 | /* Note: exit _without_ calling nfs4_close_done */ |
c8da19b9 | 2323 | goto out_no_action; |
9512135d | 2324 | } |
88069f77 | 2325 | |
f7e8917a | 2326 | if (calldata->arg.fmode == 0) { |
88069f77 | 2327 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a | 2328 | if (calldata->roc && |
b9536ad5 AA |
2329 | pnfs_roc_drain(inode, &calldata->roc_barrier, task)) { |
2330 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 | 2331 | goto out_wait; |
b9536ad5 | 2332 | } |
f7e8917a | 2333 | } |
88069f77 | 2334 | |
516a6af6 | 2335 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2336 | calldata->timestamp = jiffies; |
7fdab069 | 2337 | if (nfs4_setup_sequence(NFS_SERVER(inode), |
9d12b216 TM |
2338 | &calldata->arg.seq_args, |
2339 | &calldata->res.seq_res, | |
2240a9e2 TM |
2340 | task) != 0) |
2341 | nfs_release_seqid(calldata->arg.seqid); | |
a3ca5651 | 2342 | dprintk("%s: done!\n", __func__); |
c8da19b9 TM |
2343 | return; |
2344 | out_no_action: | |
2345 | task->tk_action = NULL; | |
2346 | out_wait: | |
2347 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
1da177e4 LT |
2348 | } |
2349 | ||
963d8fe5 | 2350 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2351 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2352 | .rpc_call_done = nfs4_close_done, |
2353 | .rpc_release = nfs4_free_closedata, | |
2354 | }; | |
2355 | ||
1da177e4 LT |
2356 | /* |
2357 | * It is possible for data to be read/written from a mem-mapped file | |
2358 | * after the sys_close call (which hits the vfs layer as a flush). | |
2359 | * This means that we can't safely call nfsv4 close on a file until | |
2360 | * the inode is cleared. This in turn means that we are not good | |
2361 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2362 | * share state even when we are done with one of the three share | |
2363 | * stateid's in the inode. | |
2364 | * | |
2365 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2366 | */ | |
1f7977c1 | 2367 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) |
1da177e4 | 2368 | { |
4a35bd41 | 2369 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2370 | struct nfs4_closedata *calldata; |
b39e625b TM |
2371 | struct nfs4_state_owner *sp = state->owner; |
2372 | struct rpc_task *task; | |
5138fde0 TM |
2373 | struct rpc_message msg = { |
2374 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2375 | .rpc_cred = state->owner->so_cred, | |
2376 | }; | |
c970aa85 TM |
2377 | struct rpc_task_setup task_setup_data = { |
2378 | .rpc_client = server->client, | |
5138fde0 | 2379 | .rpc_message = &msg, |
c970aa85 | 2380 | .callback_ops = &nfs4_close_ops, |
101070ca | 2381 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2382 | .flags = RPC_TASK_ASYNC, |
2383 | }; | |
9512135d | 2384 | int status = -ENOMEM; |
1da177e4 | 2385 | |
8535b2be | 2386 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2387 | if (calldata == NULL) |
9512135d | 2388 | goto out; |
9d12b216 | 2389 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2390 | calldata->inode = state->inode; |
1da177e4 | 2391 | calldata->state = state; |
4a35bd41 | 2392 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2393 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2394 | /* Serialization for the sequence id */ |
8535b2be | 2395 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2396 | if (calldata->arg.seqid == NULL) |
2397 | goto out_free_calldata; | |
dc0b027d | 2398 | calldata->arg.fmode = 0; |
a65318bf | 2399 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2400 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2401 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2402 | calldata->res.server = server; |
1f7977c1 | 2403 | calldata->roc = pnfs_roc(state->inode); |
643168c2 | 2404 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2405 | |
1174dd1f TM |
2406 | msg.rpc_argp = &calldata->arg; |
2407 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2408 | task_setup_data.callback_data = calldata; |
2409 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2410 | if (IS_ERR(task)) |
2411 | return PTR_ERR(task); | |
a49c3c77 TM |
2412 | status = 0; |
2413 | if (wait) | |
2414 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2415 | rpc_put_task(task); |
a49c3c77 | 2416 | return status; |
9512135d TM |
2417 | out_free_calldata: |
2418 | kfree(calldata); | |
2419 | out: | |
b39e625b TM |
2420 | nfs4_put_open_state(state); |
2421 | nfs4_put_state_owner(sp); | |
9512135d | 2422 | return status; |
1da177e4 LT |
2423 | } |
2424 | ||
2b484297 | 2425 | static struct inode * |
cd9a1c0e | 2426 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2427 | { |
1da177e4 | 2428 | struct nfs4_state *state; |
1da177e4 | 2429 | |
565277f6 | 2430 | /* Protect against concurrent sillydeletes */ |
82be417a AA |
2431 | state = nfs4_do_open(dir, ctx->dentry, ctx->mode, open_flags, attr, |
2432 | ctx->cred, &ctx->mdsthreshold); | |
f46e0bd3 TM |
2433 | if (IS_ERR(state)) |
2434 | return ERR_CAST(state); | |
cd9a1c0e | 2435 | ctx->state = state; |
f46e0bd3 | 2436 | return igrab(state->inode); |
1da177e4 LT |
2437 | } |
2438 | ||
1185a552 | 2439 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2440 | { |
2441 | if (ctx->state == NULL) | |
2442 | return; | |
2443 | if (is_sync) | |
643168c2 | 2444 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2445 | else |
643168c2 | 2446 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2447 | } |
1da177e4 LT |
2448 | |
2449 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2450 | { | |
43652ad5 BH |
2451 | struct nfs4_server_caps_arg args = { |
2452 | .fhandle = fhandle, | |
2453 | }; | |
1da177e4 LT |
2454 | struct nfs4_server_caps_res res = {}; |
2455 | struct rpc_message msg = { | |
2456 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2457 | .rpc_argp = &args, |
1da177e4 LT |
2458 | .rpc_resp = &res, |
2459 | }; | |
2460 | int status; | |
2461 | ||
7c513058 | 2462 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2463 | if (status == 0) { |
2464 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2465 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2466 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2467 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2468 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2469 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2470 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2471 | server->caps |= NFS_CAP_ACLS; | |
2472 | if (res.has_links != 0) | |
2473 | server->caps |= NFS_CAP_HARDLINKS; | |
2474 | if (res.has_symlinks != 0) | |
2475 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2476 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2477 | server->caps |= NFS_CAP_FILEID; | |
2478 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2479 | server->caps |= NFS_CAP_MODE; | |
2480 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2481 | server->caps |= NFS_CAP_NLINK; | |
2482 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2483 | server->caps |= NFS_CAP_OWNER; | |
2484 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2485 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2486 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2487 | server->caps |= NFS_CAP_ATIME; | |
2488 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2489 | server->caps |= NFS_CAP_CTIME; | |
2490 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2491 | server->caps |= NFS_CAP_MTIME; | |
2492 | ||
a65318bf TM |
2493 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2494 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2495 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 | 2496 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 2497 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 2498 | } |
cccef3b9 | 2499 | |
1da177e4 LT |
2500 | return status; |
2501 | } | |
2502 | ||
55a97593 | 2503 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2504 | { |
2505 | struct nfs4_exception exception = { }; | |
2506 | int err; | |
2507 | do { | |
2508 | err = nfs4_handle_exception(server, | |
2509 | _nfs4_server_capabilities(server, fhandle), | |
2510 | &exception); | |
2511 | } while (exception.retry); | |
2512 | return err; | |
2513 | } | |
2514 | ||
2515 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2516 | struct nfs_fsinfo *info) | |
2517 | { | |
1da177e4 LT |
2518 | struct nfs4_lookup_root_arg args = { |
2519 | .bitmask = nfs4_fattr_bitmap, | |
2520 | }; | |
2521 | struct nfs4_lookup_res res = { | |
2522 | .server = server, | |
0e574af1 | 2523 | .fattr = info->fattr, |
1da177e4 LT |
2524 | .fh = fhandle, |
2525 | }; | |
2526 | struct rpc_message msg = { | |
2527 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2528 | .rpc_argp = &args, | |
2529 | .rpc_resp = &res, | |
2530 | }; | |
008f55d0 | 2531 | |
0e574af1 | 2532 | nfs_fattr_init(info->fattr); |
7c513058 | 2533 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2534 | } |
2535 | ||
2536 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2537 | struct nfs_fsinfo *info) | |
2538 | { | |
2539 | struct nfs4_exception exception = { }; | |
2540 | int err; | |
2541 | do { | |
fb8a5ba8 BS |
2542 | err = _nfs4_lookup_root(server, fhandle, info); |
2543 | switch (err) { | |
2544 | case 0: | |
2545 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 2546 | goto out; |
fb8a5ba8 BS |
2547 | default: |
2548 | err = nfs4_handle_exception(server, err, &exception); | |
2549 | } | |
1da177e4 | 2550 | } while (exception.retry); |
05e9cfb4 | 2551 | out: |
1da177e4 LT |
2552 | return err; |
2553 | } | |
2554 | ||
8f70e95f BS |
2555 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2556 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2557 | { | |
2558 | struct rpc_auth *auth; | |
2559 | int ret; | |
2560 | ||
2561 | auth = rpcauth_create(flavor, server->client); | |
e8d920c5 | 2562 | if (IS_ERR(auth)) { |
75bc8821 | 2563 | ret = -EACCES; |
8f70e95f BS |
2564 | goto out; |
2565 | } | |
2566 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2567 | out: |
2568 | return ret; | |
2569 | } | |
2570 | ||
9a744ba3 CL |
2571 | /* |
2572 | * Retry pseudoroot lookup with various security flavors. We do this when: | |
2573 | * | |
2574 | * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC | |
2575 | * NFSv4.1: the server does not support the SECINFO_NO_NAME operation | |
2576 | * | |
2577 | * Returns zero on success, or a negative NFS4ERR value, or a | |
2578 | * negative errno value. | |
2579 | */ | |
801a16dc | 2580 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2581 | struct nfs_fsinfo *info) |
1da177e4 | 2582 | { |
9a744ba3 CL |
2583 | /* Per 3530bis 15.33.5 */ |
2584 | static const rpc_authflavor_t flav_array[] = { | |
2585 | RPC_AUTH_GSS_KRB5P, | |
2586 | RPC_AUTH_GSS_KRB5I, | |
2587 | RPC_AUTH_GSS_KRB5, | |
c4eafe11 | 2588 | RPC_AUTH_UNIX, /* courtesy */ |
9a744ba3 CL |
2589 | RPC_AUTH_NULL, |
2590 | }; | |
2591 | int status = -EPERM; | |
2592 | size_t i; | |
6a1a1e34 | 2593 | |
9a744ba3 | 2594 | for (i = 0; i < ARRAY_SIZE(flav_array); i++) { |
8f70e95f | 2595 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); |
fb8a5ba8 | 2596 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2597 | continue; |
2598 | break; | |
8f70e95f | 2599 | } |
9a744ba3 | 2600 | |
fb8a5ba8 BS |
2601 | /* |
2602 | * -EACCESS could mean that the user doesn't have correct permissions | |
2603 | * to access the mount. It could also mean that we tried to mount | |
2604 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2605 | * existing mount programs don't handle -EACCES very well so it should | |
2606 | * be mapped to -EPERM instead. | |
2607 | */ | |
2608 | if (status == -EACCES) | |
2609 | status = -EPERM; | |
801a16dc BS |
2610 | return status; |
2611 | } | |
2612 | ||
2ed4b95b CL |
2613 | static int nfs4_do_find_root_sec(struct nfs_server *server, |
2614 | struct nfs_fh *fhandle, struct nfs_fsinfo *info) | |
2615 | { | |
2616 | int mv = server->nfs_client->cl_minorversion; | |
2617 | return nfs_v4_minor_ops[mv]->find_root_sec(server, fhandle, info); | |
2618 | } | |
2619 | ||
2620 | /** | |
2621 | * nfs4_proc_get_rootfh - get file handle for server's pseudoroot | |
2622 | * @server: initialized nfs_server handle | |
2623 | * @fhandle: we fill in the pseudo-fs root file handle | |
2624 | * @info: we fill in an FSINFO struct | |
2625 | * | |
2626 | * Returns zero on success, or a negative errno. | |
801a16dc | 2627 | */ |
3028eb2b BS |
2628 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
2629 | struct nfs_fsinfo *info) | |
801a16dc | 2630 | { |
2ed4b95b CL |
2631 | int status; |
2632 | ||
2633 | status = nfs4_lookup_root(server, fhandle, info); | |
2634 | if ((status == -NFS4ERR_WRONGSEC) && | |
2635 | !(server->flags & NFS_MOUNT_SECFLAVOUR)) | |
2636 | status = nfs4_do_find_root_sec(server, fhandle, info); | |
2637 | ||
1da177e4 LT |
2638 | if (status == 0) |
2639 | status = nfs4_server_capabilities(server, fhandle); | |
2640 | if (status == 0) | |
2641 | status = nfs4_do_fsinfo(server, fhandle, info); | |
2ed4b95b | 2642 | |
c12e87f4 | 2643 | return nfs4_map_errors(status); |
1da177e4 LT |
2644 | } |
2645 | ||
bae36241 BS |
2646 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
2647 | struct nfs_fsinfo *info) | |
2648 | { | |
2649 | int error; | |
2650 | struct nfs_fattr *fattr = info->fattr; | |
2651 | ||
2652 | error = nfs4_server_capabilities(server, mntfh); | |
2653 | if (error < 0) { | |
2654 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
2655 | return error; | |
2656 | } | |
2657 | ||
2658 | error = nfs4_proc_getattr(server, mntfh, fattr); | |
2659 | if (error < 0) { | |
2660 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
2661 | return error; | |
2662 | } | |
2663 | ||
2664 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
2665 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
2666 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
2667 | ||
2668 | return error; | |
2669 | } | |
2670 | ||
6b97fd3d MN |
2671 | /* |
2672 | * Get locations and (maybe) other attributes of a referral. | |
2673 | * Note that we'll actually follow the referral later when | |
2674 | * we detect fsid mismatch in inode revalidation | |
2675 | */ | |
f05d147f BS |
2676 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
2677 | const struct qstr *name, struct nfs_fattr *fattr, | |
2678 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
2679 | { |
2680 | int status = -ENOMEM; | |
2681 | struct page *page = NULL; | |
2682 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2683 | |
2684 | page = alloc_page(GFP_KERNEL); | |
2685 | if (page == NULL) | |
2686 | goto out; | |
2687 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2688 | if (locations == NULL) | |
2689 | goto out; | |
2690 | ||
f05d147f | 2691 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
2692 | if (status != 0) |
2693 | goto out; | |
2694 | /* Make sure server returned a different fsid for the referral */ | |
2695 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2696 | dprintk("%s: server did not return a different fsid for" |
2697 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2698 | status = -EIO; |
2699 | goto out; | |
2700 | } | |
533eb461 AA |
2701 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2702 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2703 | |
533eb461 | 2704 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2705 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2706 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2707 | out: | |
2708 | if (page) | |
2709 | __free_page(page); | |
5d7ca35a | 2710 | kfree(locations); |
6b97fd3d MN |
2711 | return status; |
2712 | } | |
2713 | ||
1da177e4 LT |
2714 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2715 | { | |
2716 | struct nfs4_getattr_arg args = { | |
2717 | .fh = fhandle, | |
2718 | .bitmask = server->attr_bitmask, | |
2719 | }; | |
2720 | struct nfs4_getattr_res res = { | |
2721 | .fattr = fattr, | |
2722 | .server = server, | |
2723 | }; | |
2724 | struct rpc_message msg = { | |
2725 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2726 | .rpc_argp = &args, | |
2727 | .rpc_resp = &res, | |
2728 | }; | |
2729 | ||
0e574af1 | 2730 | nfs_fattr_init(fattr); |
7c513058 | 2731 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2732 | } |
2733 | ||
2734 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2735 | { | |
2736 | struct nfs4_exception exception = { }; | |
2737 | int err; | |
2738 | do { | |
2739 | err = nfs4_handle_exception(server, | |
2740 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2741 | &exception); | |
2742 | } while (exception.retry); | |
2743 | return err; | |
2744 | } | |
2745 | ||
2746 | /* | |
2747 | * The file is not closed if it is opened due to the a request to change | |
2748 | * the size of the file. The open call will not be needed once the | |
2749 | * VFS layer lookup-intents are implemented. | |
2750 | * | |
2751 | * Close is called when the inode is destroyed. | |
2752 | * If we haven't opened the file for O_WRONLY, we | |
2753 | * need to in the size_change case to obtain a stateid. | |
2754 | * | |
2755 | * Got race? | |
2756 | * Because OPEN is always done by name in nfsv4, it is | |
2757 | * possible that we opened a different file by the same | |
2758 | * name. We can recognize this race condition, but we | |
2759 | * can't do anything about it besides returning an error. | |
2760 | * | |
2761 | * This will be fixed with VFS changes (lookup-intent). | |
2762 | */ | |
2763 | static int | |
2764 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2765 | struct iattr *sattr) | |
2766 | { | |
08e9eac4 | 2767 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2768 | struct rpc_cred *cred = NULL; |
d530838b | 2769 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2770 | int status; |
2771 | ||
8a1636c4 | 2772 | if (pnfs_ld_layoutret_on_setattr(inode)) |
24028672 | 2773 | pnfs_commit_and_return_layout(inode); |
8a1636c4 | 2774 | |
0e574af1 | 2775 | nfs_fattr_init(fattr); |
1da177e4 | 2776 | |
2669940d AA |
2777 | /* Deal with open(O_TRUNC) */ |
2778 | if (sattr->ia_valid & ATTR_OPEN) | |
2779 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME|ATTR_OPEN); | |
2780 | ||
2781 | /* Optimization: if the end result is no change, don't RPC */ | |
2782 | if ((sattr->ia_valid & ~(ATTR_FILE)) == 0) | |
2783 | return 0; | |
2784 | ||
d530838b | 2785 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2786 | if (sattr->ia_valid & ATTR_FILE) { |
2787 | struct nfs_open_context *ctx; | |
2788 | ||
2789 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2790 | if (ctx) { |
2791 | cred = ctx->cred; | |
2792 | state = ctx->state; | |
2793 | } | |
659bfcd6 | 2794 | } |
08e9eac4 | 2795 | |
659bfcd6 | 2796 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2797 | if (status == 0) |
2798 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2799 | return status; |
2800 | } | |
2801 | ||
0c2e53f1 TM |
2802 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
2803 | const struct qstr *name, struct nfs_fh *fhandle, | |
2804 | struct nfs_fattr *fattr) | |
2b3de441 | 2805 | { |
0c2e53f1 | 2806 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
2807 | int status; |
2808 | struct nfs4_lookup_arg args = { | |
2809 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 2810 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
2811 | .name = name, |
2812 | }; | |
2813 | struct nfs4_lookup_res res = { | |
2814 | .server = server, | |
2815 | .fattr = fattr, | |
2816 | .fh = fhandle, | |
2817 | }; | |
2818 | struct rpc_message msg = { | |
2819 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2820 | .rpc_argp = &args, | |
2821 | .rpc_resp = &res, | |
2822 | }; | |
2823 | ||
2824 | nfs_fattr_init(fattr); | |
2825 | ||
1da177e4 | 2826 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 2827 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2828 | dprintk("NFS reply lookup: %d\n", status); |
2829 | return status; | |
2830 | } | |
2831 | ||
72de53ec | 2832 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 2833 | { |
7ebb9315 | 2834 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 2835 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
2836 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
2837 | fattr->nlink = 2; | |
2838 | } | |
2839 | ||
72de53ec BS |
2840 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
2841 | struct qstr *name, struct nfs_fh *fhandle, | |
2842 | struct nfs_fattr *fattr) | |
1da177e4 LT |
2843 | { |
2844 | struct nfs4_exception exception = { }; | |
72de53ec | 2845 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
2846 | int err; |
2847 | do { | |
72de53ec BS |
2848 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr); |
2849 | switch (err) { | |
08ef7bd3 | 2850 | case -NFS4ERR_BADNAME: |
72de53ec BS |
2851 | err = -ENOENT; |
2852 | goto out; | |
0c2e53f1 | 2853 | case -NFS4ERR_MOVED: |
f05d147f | 2854 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
72de53ec | 2855 | goto out; |
0c2e53f1 | 2856 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
2857 | err = -EPERM; |
2858 | if (client != *clnt) | |
2859 | goto out; | |
2860 | ||
2861 | client = nfs4_create_sec_client(client, dir, name); | |
2862 | if (IS_ERR(client)) | |
2863 | return PTR_ERR(client); | |
2864 | ||
2865 | exception.retry = 1; | |
2866 | break; | |
2867 | default: | |
2868 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 2869 | } |
1da177e4 | 2870 | } while (exception.retry); |
72de53ec BS |
2871 | |
2872 | out: | |
2873 | if (err == 0) | |
2874 | *clnt = client; | |
2875 | else if (client != *clnt) | |
2876 | rpc_shutdown_client(client); | |
2877 | ||
1da177e4 LT |
2878 | return err; |
2879 | } | |
2880 | ||
80a16b21 | 2881 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, |
72de53ec BS |
2882 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2883 | { | |
2884 | int status; | |
2885 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
2886 | ||
2887 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2888 | if (client != NFS_CLIENT(dir)) { | |
2889 | rpc_shutdown_client(client); | |
2890 | nfs_fixup_secinfo_attributes(fattr); | |
2891 | } | |
2892 | return status; | |
2893 | } | |
2894 | ||
f05d147f BS |
2895 | struct rpc_clnt * |
2896 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, | |
2897 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2898 | { | |
2899 | int status; | |
2900 | struct rpc_clnt *client = rpc_clone_client(NFS_CLIENT(dir)); | |
2901 | ||
2902 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2903 | if (status < 0) { | |
2904 | rpc_shutdown_client(client); | |
2905 | return ERR_PTR(status); | |
2906 | } | |
2907 | return client; | |
2908 | } | |
2909 | ||
1da177e4 LT |
2910 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
2911 | { | |
76b32999 | 2912 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2913 | struct nfs4_accessargs args = { |
2914 | .fh = NFS_FH(inode), | |
a4980e78 | 2915 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
2916 | }; |
2917 | struct nfs4_accessres res = { | |
2918 | .server = server, | |
1da177e4 | 2919 | }; |
1da177e4 LT |
2920 | struct rpc_message msg = { |
2921 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2922 | .rpc_argp = &args, | |
2923 | .rpc_resp = &res, | |
2924 | .rpc_cred = entry->cred, | |
2925 | }; | |
2926 | int mode = entry->mask; | |
2927 | int status; | |
2928 | ||
2929 | /* | |
2930 | * Determine which access bits we want to ask for... | |
2931 | */ | |
2932 | if (mode & MAY_READ) | |
2933 | args.access |= NFS4_ACCESS_READ; | |
2934 | if (S_ISDIR(inode->i_mode)) { | |
2935 | if (mode & MAY_WRITE) | |
2936 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2937 | if (mode & MAY_EXEC) | |
2938 | args.access |= NFS4_ACCESS_LOOKUP; | |
2939 | } else { | |
2940 | if (mode & MAY_WRITE) | |
2941 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2942 | if (mode & MAY_EXEC) | |
2943 | args.access |= NFS4_ACCESS_EXECUTE; | |
2944 | } | |
c407d41a TM |
2945 | |
2946 | res.fattr = nfs_alloc_fattr(); | |
2947 | if (res.fattr == NULL) | |
2948 | return -ENOMEM; | |
2949 | ||
7c513058 | 2950 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 2951 | if (!status) { |
6168f62c | 2952 | nfs_access_set_mask(entry, res.access); |
c407d41a | 2953 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2954 | } |
c407d41a | 2955 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2956 | return status; |
2957 | } | |
2958 | ||
2959 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2960 | { | |
2961 | struct nfs4_exception exception = { }; | |
2962 | int err; | |
2963 | do { | |
2964 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2965 | _nfs4_proc_access(inode, entry), | |
2966 | &exception); | |
2967 | } while (exception.retry); | |
2968 | return err; | |
2969 | } | |
2970 | ||
2971 | /* | |
2972 | * TODO: For the time being, we don't try to get any attributes | |
2973 | * along with any of the zero-copy operations READ, READDIR, | |
2974 | * READLINK, WRITE. | |
2975 | * | |
2976 | * In the case of the first three, we want to put the GETATTR | |
2977 | * after the read-type operation -- this is because it is hard | |
2978 | * to predict the length of a GETATTR response in v4, and thus | |
2979 | * align the READ data correctly. This means that the GETATTR | |
2980 | * may end up partially falling into the page cache, and we should | |
2981 | * shift it into the 'tail' of the xdr_buf before processing. | |
2982 | * To do this efficiently, we need to know the total length | |
2983 | * of data received, which doesn't seem to be available outside | |
2984 | * of the RPC layer. | |
2985 | * | |
2986 | * In the case of WRITE, we also want to put the GETATTR after | |
2987 | * the operation -- in this case because we want to make sure | |
140150db | 2988 | * we get the post-operation mtime and size. |
1da177e4 LT |
2989 | * |
2990 | * Both of these changes to the XDR layer would in fact be quite | |
2991 | * minor, but I decided to leave them for a subsequent patch. | |
2992 | */ | |
2993 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2994 | unsigned int pgbase, unsigned int pglen) | |
2995 | { | |
2996 | struct nfs4_readlink args = { | |
2997 | .fh = NFS_FH(inode), | |
2998 | .pgbase = pgbase, | |
2999 | .pglen = pglen, | |
3000 | .pages = &page, | |
3001 | }; | |
f50c7000 | 3002 | struct nfs4_readlink_res res; |
1da177e4 LT |
3003 | struct rpc_message msg = { |
3004 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
3005 | .rpc_argp = &args, | |
f50c7000 | 3006 | .rpc_resp = &res, |
1da177e4 LT |
3007 | }; |
3008 | ||
7c513058 | 3009 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3010 | } |
3011 | ||
3012 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3013 | unsigned int pgbase, unsigned int pglen) | |
3014 | { | |
3015 | struct nfs4_exception exception = { }; | |
3016 | int err; | |
3017 | do { | |
3018 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3019 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
3020 | &exception); | |
3021 | } while (exception.retry); | |
3022 | return err; | |
3023 | } | |
3024 | ||
1da177e4 | 3025 | /* |
8867fe58 | 3026 | * This is just for mknod. open(O_CREAT) will always do ->open_context(). |
1da177e4 | 3027 | */ |
1da177e4 LT |
3028 | static int |
3029 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 3030 | int flags) |
1da177e4 | 3031 | { |
8867fe58 | 3032 | struct nfs_open_context *ctx; |
1da177e4 | 3033 | struct nfs4_state *state; |
1da177e4 LT |
3034 | int status = 0; |
3035 | ||
8867fe58 MS |
3036 | ctx = alloc_nfs_open_context(dentry, FMODE_READ); |
3037 | if (IS_ERR(ctx)) | |
3038 | return PTR_ERR(ctx); | |
3039 | ||
a8a5da99 | 3040 | sattr->ia_mode &= ~current_umask(); |
8626e4a4 TM |
3041 | state = nfs4_do_open(dir, dentry, ctx->mode, |
3042 | flags, sattr, ctx->cred, | |
3043 | &ctx->mdsthreshold); | |
d4d9cdcb | 3044 | d_drop(dentry); |
1da177e4 LT |
3045 | if (IS_ERR(state)) { |
3046 | status = PTR_ERR(state); | |
c0204fd2 | 3047 | goto out; |
1da177e4 | 3048 | } |
d4d9cdcb | 3049 | d_add(dentry, igrab(state->inode)); |
d75340cc | 3050 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
8867fe58 | 3051 | ctx->state = state; |
1da177e4 | 3052 | out: |
8867fe58 | 3053 | put_nfs_open_context(ctx); |
1da177e4 LT |
3054 | return status; |
3055 | } | |
3056 | ||
3057 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3058 | { | |
16e42959 | 3059 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 3060 | struct nfs_removeargs args = { |
1da177e4 | 3061 | .fh = NFS_FH(dir), |
26fe5750 | 3062 | .name = *name, |
16e42959 | 3063 | }; |
4fdc17b2 | 3064 | struct nfs_removeres res = { |
16e42959 | 3065 | .server = server, |
1da177e4 | 3066 | }; |
1da177e4 | 3067 | struct rpc_message msg = { |
4fdc17b2 TM |
3068 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
3069 | .rpc_argp = &args, | |
3070 | .rpc_resp = &res, | |
1da177e4 | 3071 | }; |
778d2817 | 3072 | int status; |
1da177e4 | 3073 | |
7c513058 | 3074 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 3075 | if (status == 0) |
16e42959 | 3076 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
3077 | return status; |
3078 | } | |
3079 | ||
3080 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3081 | { | |
3082 | struct nfs4_exception exception = { }; | |
3083 | int err; | |
3084 | do { | |
3085 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3086 | _nfs4_proc_remove(dir, name), | |
3087 | &exception); | |
3088 | } while (exception.retry); | |
3089 | return err; | |
3090 | } | |
3091 | ||
e4eff1a6 | 3092 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 3093 | { |
e4eff1a6 TM |
3094 | struct nfs_server *server = NFS_SERVER(dir); |
3095 | struct nfs_removeargs *args = msg->rpc_argp; | |
3096 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 3097 | |
e4eff1a6 | 3098 | res->server = server; |
1da177e4 | 3099 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
9d12b216 | 3100 | nfs41_init_sequence(&args->seq_args, &res->seq_res, 1); |
1da177e4 LT |
3101 | } |
3102 | ||
34e137cc BS |
3103 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
3104 | { | |
d9afbd1b TM |
3105 | nfs4_setup_sequence(NFS_SERVER(data->dir), |
3106 | &data->args.seq_args, | |
3107 | &data->res.seq_res, | |
3108 | task); | |
1da177e4 LT |
3109 | } |
3110 | ||
e4eff1a6 | 3111 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 3112 | { |
e4eff1a6 TM |
3113 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
3114 | ||
14516c3a TM |
3115 | if (!nfs4_sequence_done(task, &res->seq_res)) |
3116 | return 0; | |
9e33bed5 | 3117 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
3118 | return 0; |
3119 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 3120 | return 1; |
1da177e4 LT |
3121 | } |
3122 | ||
d3d4152a JL |
3123 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
3124 | { | |
3125 | struct nfs_server *server = NFS_SERVER(dir); | |
3126 | struct nfs_renameargs *arg = msg->rpc_argp; | |
3127 | struct nfs_renameres *res = msg->rpc_resp; | |
3128 | ||
3129 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 3130 | res->server = server; |
9d12b216 | 3131 | nfs41_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
3132 | } |
3133 | ||
c6bfa1a1 BS |
3134 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
3135 | { | |
d9afbd1b TM |
3136 | nfs4_setup_sequence(NFS_SERVER(data->old_dir), |
3137 | &data->args.seq_args, | |
3138 | &data->res.seq_res, | |
3139 | task); | |
d3d4152a JL |
3140 | } |
3141 | ||
3142 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
3143 | struct inode *new_dir) | |
3144 | { | |
3145 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
3146 | ||
3147 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
3148 | return 0; | |
3149 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
3150 | return 0; | |
3151 | ||
3152 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 3153 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
3154 | return 1; |
3155 | } | |
3156 | ||
1da177e4 LT |
3157 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
3158 | struct inode *new_dir, struct qstr *new_name) | |
3159 | { | |
6caf2c82 | 3160 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 3161 | struct nfs_renameargs arg = { |
1da177e4 LT |
3162 | .old_dir = NFS_FH(old_dir), |
3163 | .new_dir = NFS_FH(new_dir), | |
3164 | .old_name = old_name, | |
3165 | .new_name = new_name, | |
6caf2c82 | 3166 | }; |
e8582a8b | 3167 | struct nfs_renameres res = { |
6caf2c82 | 3168 | .server = server, |
1da177e4 | 3169 | }; |
1da177e4 LT |
3170 | struct rpc_message msg = { |
3171 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
3172 | .rpc_argp = &arg, | |
3173 | .rpc_resp = &res, | |
3174 | }; | |
011fff72 | 3175 | int status = -ENOMEM; |
1da177e4 | 3176 | |
7c513058 | 3177 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
3178 | if (!status) { |
3179 | update_changeattr(old_dir, &res.old_cinfo); | |
3180 | update_changeattr(new_dir, &res.new_cinfo); | |
3181 | } | |
3182 | return status; | |
3183 | } | |
3184 | ||
3185 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
3186 | struct inode *new_dir, struct qstr *new_name) | |
3187 | { | |
3188 | struct nfs4_exception exception = { }; | |
3189 | int err; | |
3190 | do { | |
3191 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
3192 | _nfs4_proc_rename(old_dir, old_name, | |
3193 | new_dir, new_name), | |
3194 | &exception); | |
3195 | } while (exception.retry); | |
3196 | return err; | |
3197 | } | |
3198 | ||
3199 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3200 | { | |
91ba2eee | 3201 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3202 | struct nfs4_link_arg arg = { |
3203 | .fh = NFS_FH(inode), | |
3204 | .dir_fh = NFS_FH(dir), | |
3205 | .name = name, | |
91ba2eee TM |
3206 | .bitmask = server->attr_bitmask, |
3207 | }; | |
91ba2eee TM |
3208 | struct nfs4_link_res res = { |
3209 | .server = server, | |
1da177e4 | 3210 | }; |
1da177e4 LT |
3211 | struct rpc_message msg = { |
3212 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
3213 | .rpc_argp = &arg, | |
91ba2eee | 3214 | .rpc_resp = &res, |
1da177e4 | 3215 | }; |
136f2627 TM |
3216 | int status = -ENOMEM; |
3217 | ||
3218 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 3219 | if (res.fattr == NULL) |
136f2627 | 3220 | goto out; |
1da177e4 | 3221 | |
7c513058 | 3222 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
3223 | if (!status) { |
3224 | update_changeattr(dir, &res.cinfo); | |
73a3d07c | 3225 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 3226 | } |
136f2627 | 3227 | out: |
136f2627 | 3228 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3229 | return status; |
3230 | } | |
3231 | ||
3232 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3233 | { | |
3234 | struct nfs4_exception exception = { }; | |
3235 | int err; | |
3236 | do { | |
3237 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3238 | _nfs4_proc_link(inode, dir, name), | |
3239 | &exception); | |
3240 | } while (exception.retry); | |
3241 | return err; | |
3242 | } | |
3243 | ||
57dc9a57 TM |
3244 | struct nfs4_createdata { |
3245 | struct rpc_message msg; | |
3246 | struct nfs4_create_arg arg; | |
3247 | struct nfs4_create_res res; | |
3248 | struct nfs_fh fh; | |
3249 | struct nfs_fattr fattr; | |
57dc9a57 TM |
3250 | }; |
3251 | ||
3252 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
3253 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
3254 | { | |
3255 | struct nfs4_createdata *data; | |
3256 | ||
3257 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3258 | if (data != NULL) { | |
3259 | struct nfs_server *server = NFS_SERVER(dir); | |
3260 | ||
3261 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
3262 | data->msg.rpc_argp = &data->arg; | |
3263 | data->msg.rpc_resp = &data->res; | |
3264 | data->arg.dir_fh = NFS_FH(dir); | |
3265 | data->arg.server = server; | |
3266 | data->arg.name = name; | |
3267 | data->arg.attrs = sattr; | |
3268 | data->arg.ftype = ftype; | |
3269 | data->arg.bitmask = server->attr_bitmask; | |
3270 | data->res.server = server; | |
3271 | data->res.fh = &data->fh; | |
3272 | data->res.fattr = &data->fattr; | |
57dc9a57 | 3273 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
3274 | } |
3275 | return data; | |
3276 | } | |
3277 | ||
3278 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3279 | { | |
7c513058 | 3280 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3281 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3282 | if (status == 0) { |
3283 | update_changeattr(dir, &data->res.dir_cinfo); | |
57dc9a57 TM |
3284 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); |
3285 | } | |
3286 | return status; | |
3287 | } | |
3288 | ||
3289 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3290 | { | |
3291 | kfree(data); | |
3292 | } | |
3293 | ||
4f390c15 | 3294 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3295 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 3296 | { |
57dc9a57 TM |
3297 | struct nfs4_createdata *data; |
3298 | int status = -ENAMETOOLONG; | |
1da177e4 | 3299 | |
94a6d753 | 3300 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 3301 | goto out; |
4f390c15 | 3302 | |
57dc9a57 TM |
3303 | status = -ENOMEM; |
3304 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
3305 | if (data == NULL) | |
3306 | goto out; | |
3307 | ||
3308 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
3309 | data->arg.u.symlink.pages = &page; | |
3310 | data->arg.u.symlink.len = len; | |
1da177e4 | 3311 | |
57dc9a57 TM |
3312 | status = nfs4_do_create(dir, dentry, data); |
3313 | ||
3314 | nfs4_free_createdata(data); | |
3315 | out: | |
1da177e4 LT |
3316 | return status; |
3317 | } | |
3318 | ||
4f390c15 | 3319 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3320 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
3321 | { |
3322 | struct nfs4_exception exception = { }; | |
3323 | int err; | |
3324 | do { | |
3325 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
3326 | _nfs4_proc_symlink(dir, dentry, page, |
3327 | len, sattr), | |
1da177e4 LT |
3328 | &exception); |
3329 | } while (exception.retry); | |
3330 | return err; | |
3331 | } | |
3332 | ||
3333 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3334 | struct iattr *sattr) | |
3335 | { | |
57dc9a57 TM |
3336 | struct nfs4_createdata *data; |
3337 | int status = -ENOMEM; | |
1da177e4 | 3338 | |
57dc9a57 TM |
3339 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3340 | if (data == NULL) | |
3341 | goto out; | |
3342 | ||
3343 | status = nfs4_do_create(dir, dentry, data); | |
3344 | ||
3345 | nfs4_free_createdata(data); | |
3346 | out: | |
1da177e4 LT |
3347 | return status; |
3348 | } | |
3349 | ||
3350 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3351 | struct iattr *sattr) | |
3352 | { | |
3353 | struct nfs4_exception exception = { }; | |
3354 | int err; | |
a8a5da99 AK |
3355 | |
3356 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3357 | do { |
3358 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3359 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
3360 | &exception); | |
3361 | } while (exception.retry); | |
3362 | return err; | |
3363 | } | |
3364 | ||
3365 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3366 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3367 | { |
3368 | struct inode *dir = dentry->d_inode; | |
3369 | struct nfs4_readdir_arg args = { | |
3370 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3371 | .pages = pages, |
1da177e4 LT |
3372 | .pgbase = 0, |
3373 | .count = count, | |
96d25e53 | 3374 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3375 | .plus = plus, |
1da177e4 LT |
3376 | }; |
3377 | struct nfs4_readdir_res res; | |
3378 | struct rpc_message msg = { | |
3379 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3380 | .rpc_argp = &args, | |
3381 | .rpc_resp = &res, | |
3382 | .rpc_cred = cred, | |
3383 | }; | |
3384 | int status; | |
3385 | ||
3110ff80 | 3386 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
3387 | dentry->d_parent->d_name.name, |
3388 | dentry->d_name.name, | |
3389 | (unsigned long long)cookie); | |
c3f52af3 | 3390 | nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args); |
1da177e4 | 3391 | res.pgbase = args.pgbase; |
7c513058 | 3392 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3393 | if (status >= 0) { |
c3f52af3 | 3394 | memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3395 | status += args.pgbase; |
3396 | } | |
c4812998 TM |
3397 | |
3398 | nfs_invalidate_atime(dir); | |
3399 | ||
3110ff80 | 3400 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3401 | return status; |
3402 | } | |
3403 | ||
3404 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3405 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3406 | { |
3407 | struct nfs4_exception exception = { }; | |
3408 | int err; | |
3409 | do { | |
3410 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
3411 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 3412 | pages, count, plus), |
1da177e4 LT |
3413 | &exception); |
3414 | } while (exception.retry); | |
3415 | return err; | |
3416 | } | |
3417 | ||
3418 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3419 | struct iattr *sattr, dev_t rdev) | |
3420 | { | |
57dc9a57 TM |
3421 | struct nfs4_createdata *data; |
3422 | int mode = sattr->ia_mode; | |
3423 | int status = -ENOMEM; | |
1da177e4 | 3424 | |
57dc9a57 TM |
3425 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); |
3426 | if (data == NULL) | |
3427 | goto out; | |
3428 | ||
1da177e4 | 3429 | if (S_ISFIFO(mode)) |
57dc9a57 | 3430 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3431 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3432 | data->arg.ftype = NF4BLK; |
3433 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3434 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3435 | } |
3436 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3437 | data->arg.ftype = NF4CHR; |
3438 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3439 | data->arg.u.device.specdata2 = MINOR(rdev); | |
4ea8fed5 TM |
3440 | } else if (!S_ISSOCK(mode)) { |
3441 | status = -EINVAL; | |
3442 | goto out_free; | |
1da177e4 | 3443 | } |
1da177e4 | 3444 | |
57dc9a57 | 3445 | status = nfs4_do_create(dir, dentry, data); |
4ea8fed5 | 3446 | out_free: |
57dc9a57 TM |
3447 | nfs4_free_createdata(data); |
3448 | out: | |
1da177e4 LT |
3449 | return status; |
3450 | } | |
3451 | ||
3452 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3453 | struct iattr *sattr, dev_t rdev) | |
3454 | { | |
3455 | struct nfs4_exception exception = { }; | |
3456 | int err; | |
a8a5da99 AK |
3457 | |
3458 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3459 | do { |
3460 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3461 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
3462 | &exception); | |
3463 | } while (exception.retry); | |
3464 | return err; | |
3465 | } | |
3466 | ||
3467 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3468 | struct nfs_fsstat *fsstat) | |
3469 | { | |
3470 | struct nfs4_statfs_arg args = { | |
3471 | .fh = fhandle, | |
3472 | .bitmask = server->attr_bitmask, | |
3473 | }; | |
24ad148a BH |
3474 | struct nfs4_statfs_res res = { |
3475 | .fsstat = fsstat, | |
3476 | }; | |
1da177e4 LT |
3477 | struct rpc_message msg = { |
3478 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3479 | .rpc_argp = &args, | |
24ad148a | 3480 | .rpc_resp = &res, |
1da177e4 LT |
3481 | }; |
3482 | ||
0e574af1 | 3483 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3484 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3485 | } |
3486 | ||
3487 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3488 | { | |
3489 | struct nfs4_exception exception = { }; | |
3490 | int err; | |
3491 | do { | |
3492 | err = nfs4_handle_exception(server, | |
3493 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3494 | &exception); | |
3495 | } while (exception.retry); | |
3496 | return err; | |
3497 | } | |
3498 | ||
3499 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3500 | struct nfs_fsinfo *fsinfo) | |
3501 | { | |
3502 | struct nfs4_fsinfo_arg args = { | |
3503 | .fh = fhandle, | |
3504 | .bitmask = server->attr_bitmask, | |
3505 | }; | |
3dda5e43 BH |
3506 | struct nfs4_fsinfo_res res = { |
3507 | .fsinfo = fsinfo, | |
3508 | }; | |
1da177e4 LT |
3509 | struct rpc_message msg = { |
3510 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3511 | .rpc_argp = &args, | |
3dda5e43 | 3512 | .rpc_resp = &res, |
1da177e4 LT |
3513 | }; |
3514 | ||
7c513058 | 3515 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3516 | } |
3517 | ||
3518 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3519 | { | |
3520 | struct nfs4_exception exception = { }; | |
83ca7f5a | 3521 | unsigned long now = jiffies; |
1da177e4 LT |
3522 | int err; |
3523 | ||
3524 | do { | |
83ca7f5a CL |
3525 | err = _nfs4_do_fsinfo(server, fhandle, fsinfo); |
3526 | if (err == 0) { | |
3527 | struct nfs_client *clp = server->nfs_client; | |
3528 | ||
3529 | spin_lock(&clp->cl_lock); | |
3530 | clp->cl_lease_time = fsinfo->lease_time * HZ; | |
3531 | clp->cl_last_renewal = now; | |
3532 | spin_unlock(&clp->cl_lock); | |
3533 | break; | |
3534 | } | |
3535 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
3536 | } while (exception.retry); |
3537 | return err; | |
3538 | } | |
3539 | ||
3540 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3541 | { | |
e38eb650 BS |
3542 | int error; |
3543 | ||
0e574af1 | 3544 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 | 3545 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
dc182549 PT |
3546 | if (error == 0) { |
3547 | /* block layout checks this! */ | |
3548 | server->pnfs_blksize = fsinfo->blksize; | |
e38eb650 | 3549 | set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype); |
dc182549 | 3550 | } |
e38eb650 BS |
3551 | |
3552 | return error; | |
1da177e4 LT |
3553 | } |
3554 | ||
3555 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3556 | struct nfs_pathconf *pathconf) | |
3557 | { | |
3558 | struct nfs4_pathconf_arg args = { | |
3559 | .fh = fhandle, | |
3560 | .bitmask = server->attr_bitmask, | |
3561 | }; | |
d45b2989 BH |
3562 | struct nfs4_pathconf_res res = { |
3563 | .pathconf = pathconf, | |
3564 | }; | |
1da177e4 LT |
3565 | struct rpc_message msg = { |
3566 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3567 | .rpc_argp = &args, | |
d45b2989 | 3568 | .rpc_resp = &res, |
1da177e4 LT |
3569 | }; |
3570 | ||
3571 | /* None of the pathconf attributes are mandatory to implement */ | |
3572 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3573 | memset(pathconf, 0, sizeof(*pathconf)); | |
3574 | return 0; | |
3575 | } | |
3576 | ||
0e574af1 | 3577 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3578 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3579 | } |
3580 | ||
3581 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3582 | struct nfs_pathconf *pathconf) | |
3583 | { | |
3584 | struct nfs4_exception exception = { }; | |
3585 | int err; | |
3586 | ||
3587 | do { | |
3588 | err = nfs4_handle_exception(server, | |
3589 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3590 | &exception); | |
3591 | } while (exception.retry); | |
3592 | return err; | |
3593 | } | |
3594 | ||
5521abfd | 3595 | int nfs4_set_rw_stateid(nfs4_stateid *stateid, |
9b206149 TM |
3596 | const struct nfs_open_context *ctx, |
3597 | const struct nfs_lock_context *l_ctx, | |
3598 | fmode_t fmode) | |
3599 | { | |
3600 | const struct nfs_lockowner *lockowner = NULL; | |
3601 | ||
3602 | if (l_ctx != NULL) | |
3603 | lockowner = &l_ctx->lockowner; | |
5521abfd | 3604 | return nfs4_select_rw_stateid(stateid, ctx->state, fmode, lockowner); |
9b206149 TM |
3605 | } |
3606 | EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid); | |
3607 | ||
5521abfd TM |
3608 | static bool nfs4_stateid_is_current(nfs4_stateid *stateid, |
3609 | const struct nfs_open_context *ctx, | |
3610 | const struct nfs_lock_context *l_ctx, | |
3611 | fmode_t fmode) | |
3612 | { | |
3613 | nfs4_stateid current_stateid; | |
3614 | ||
3615 | if (nfs4_set_rw_stateid(¤t_stateid, ctx, l_ctx, fmode)) | |
3616 | return false; | |
3617 | return nfs4_stateid_match(stateid, ¤t_stateid); | |
3618 | } | |
3619 | ||
3620 | static bool nfs4_error_stateid_expired(int err) | |
3621 | { | |
3622 | switch (err) { | |
3623 | case -NFS4ERR_DELEG_REVOKED: | |
3624 | case -NFS4ERR_ADMIN_REVOKED: | |
3625 | case -NFS4ERR_BAD_STATEID: | |
3626 | case -NFS4ERR_STALE_STATEID: | |
3627 | case -NFS4ERR_OLD_STATEID: | |
3628 | case -NFS4ERR_OPENMODE: | |
3629 | case -NFS4ERR_EXPIRED: | |
3630 | return true; | |
3631 | } | |
3632 | return false; | |
3633 | } | |
3634 | ||
d20581aa BH |
3635 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3636 | { | |
cd841605 | 3637 | nfs_invalidate_atime(data->header->inode); |
d20581aa BH |
3638 | } |
3639 | ||
cbdabc7f | 3640 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3641 | { |
cd841605 | 3642 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
1da177e4 | 3643 | |
9e33bed5 | 3644 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3645 | rpc_restart_call_prepare(task); |
ec06c096 | 3646 | return -EAGAIN; |
1da177e4 | 3647 | } |
8850df99 | 3648 | |
d20581aa | 3649 | __nfs4_read_done_cb(data); |
1da177e4 | 3650 | if (task->tk_status > 0) |
ec06c096 TM |
3651 | renew_lease(server, data->timestamp); |
3652 | return 0; | |
1da177e4 LT |
3653 | } |
3654 | ||
5521abfd TM |
3655 | static bool nfs4_read_stateid_changed(struct rpc_task *task, |
3656 | struct nfs_readargs *args) | |
3657 | { | |
3658 | ||
3659 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
3660 | nfs4_stateid_is_current(&args->stateid, | |
3661 | args->context, | |
3662 | args->lock_context, | |
3663 | FMODE_READ)) | |
3664 | return false; | |
3665 | rpc_restart_call_prepare(task); | |
3666 | return true; | |
3667 | } | |
3668 | ||
cbdabc7f AA |
3669 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3670 | { | |
3671 | ||
3672 | dprintk("--> %s\n", __func__); | |
3673 | ||
3674 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3675 | return -EAGAIN; | |
5521abfd TM |
3676 | if (nfs4_read_stateid_changed(task, &data->args)) |
3677 | return -EAGAIN; | |
d20581aa BH |
3678 | return data->read_done_cb ? data->read_done_cb(task, data) : |
3679 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
3680 | } |
3681 | ||
bdc7f021 | 3682 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3683 | { |
1da177e4 | 3684 | data->timestamp = jiffies; |
cbdabc7f | 3685 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3686 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
9d12b216 | 3687 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
1da177e4 LT |
3688 | } |
3689 | ||
ea7c3303 BS |
3690 | static void nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) |
3691 | { | |
9b206149 | 3692 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
d9afbd1b TM |
3693 | &data->args.seq_args, |
3694 | &data->res.seq_res, | |
9b206149 TM |
3695 | task)) |
3696 | return; | |
3697 | nfs4_set_rw_stateid(&data->args.stateid, data->args.context, | |
3698 | data->args.lock_context, FMODE_READ); | |
1da177e4 LT |
3699 | } |
3700 | ||
b029bc9b | 3701 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3702 | { |
cd841605 | 3703 | struct inode *inode = data->header->inode; |
1da177e4 | 3704 | |
9e33bed5 | 3705 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3706 | rpc_restart_call_prepare(task); |
788e7a89 | 3707 | return -EAGAIN; |
1da177e4 | 3708 | } |
4f9838c7 | 3709 | if (task->tk_status >= 0) { |
1da177e4 | 3710 | renew_lease(NFS_SERVER(inode), data->timestamp); |
5a37f851 | 3711 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); |
4f9838c7 | 3712 | } |
788e7a89 | 3713 | return 0; |
1da177e4 LT |
3714 | } |
3715 | ||
5521abfd TM |
3716 | static bool nfs4_write_stateid_changed(struct rpc_task *task, |
3717 | struct nfs_writeargs *args) | |
3718 | { | |
3719 | ||
3720 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
3721 | nfs4_stateid_is_current(&args->stateid, | |
3722 | args->context, | |
3723 | args->lock_context, | |
3724 | FMODE_WRITE)) | |
3725 | return false; | |
3726 | rpc_restart_call_prepare(task); | |
3727 | return true; | |
3728 | } | |
3729 | ||
b029bc9b FI |
3730 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3731 | { | |
3732 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3733 | return -EAGAIN; | |
5521abfd TM |
3734 | if (nfs4_write_stateid_changed(task, &data->args)) |
3735 | return -EAGAIN; | |
d20581aa BH |
3736 | return data->write_done_cb ? data->write_done_cb(task, data) : |
3737 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
3738 | } |
3739 | ||
5a37f851 TM |
3740 | static |
3741 | bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data *data) | |
a69aef14 | 3742 | { |
5a37f851 TM |
3743 | const struct nfs_pgio_header *hdr = data->header; |
3744 | ||
3745 | /* Don't request attributes for pNFS or O_DIRECT writes */ | |
3746 | if (data->ds_clp != NULL || hdr->dreq != NULL) | |
3747 | return false; | |
3748 | /* Otherwise, request attributes if and only if we don't hold | |
3749 | * a delegation | |
3750 | */ | |
011e2a7f | 3751 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 3752 | } |
a69aef14 | 3753 | |
bdc7f021 | 3754 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3755 | { |
cd841605 | 3756 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
bdc7f021 | 3757 | |
5a37f851 | 3758 | if (!nfs4_write_need_cache_consistency_data(data)) { |
7ffd1064 FI |
3759 | data->args.bitmask = NULL; |
3760 | data->res.fattr = NULL; | |
3761 | } else | |
3762 | data->args.bitmask = server->cache_consistency_bitmask; | |
5a37f851 | 3763 | |
b029bc9b FI |
3764 | if (!data->write_done_cb) |
3765 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3766 | data->res.server = server; |
1da177e4 LT |
3767 | data->timestamp = jiffies; |
3768 | ||
bdc7f021 | 3769 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
9d12b216 | 3770 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3771 | } |
3772 | ||
c6cb80d0 BS |
3773 | static void nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) |
3774 | { | |
9b206149 | 3775 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
d9afbd1b TM |
3776 | &data->args.seq_args, |
3777 | &data->res.seq_res, | |
9b206149 TM |
3778 | task)) |
3779 | return; | |
3780 | nfs4_set_rw_stateid(&data->args.stateid, data->args.context, | |
3781 | data->args.lock_context, FMODE_WRITE); | |
1da177e4 LT |
3782 | } |
3783 | ||
0b7c0153 | 3784 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 | 3785 | { |
d9afbd1b TM |
3786 | nfs4_setup_sequence(NFS_SERVER(data->inode), |
3787 | &data->args.seq_args, | |
3788 | &data->res.seq_res, | |
3789 | task); | |
1da177e4 LT |
3790 | } |
3791 | ||
0b7c0153 | 3792 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 3793 | { |
1da177e4 | 3794 | struct inode *inode = data->inode; |
14516c3a | 3795 | |
9e33bed5 | 3796 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
d00c5d43 | 3797 | rpc_restart_call_prepare(task); |
788e7a89 | 3798 | return -EAGAIN; |
1da177e4 | 3799 | } |
788e7a89 | 3800 | return 0; |
1da177e4 LT |
3801 | } |
3802 | ||
0b7c0153 | 3803 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
3804 | { |
3805 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3806 | return -EAGAIN; | |
0b7c0153 | 3807 | return data->commit_done_cb(task, data); |
5f452431 FI |
3808 | } |
3809 | ||
0b7c0153 | 3810 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 3811 | { |
788e7a89 | 3812 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 3813 | |
0b7c0153 FI |
3814 | if (data->commit_done_cb == NULL) |
3815 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 3816 | data->res.server = server; |
bdc7f021 | 3817 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
9d12b216 | 3818 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3819 | } |
3820 | ||
9bc4e3ca CL |
3821 | struct nfs4_renewdata { |
3822 | struct nfs_client *client; | |
3823 | unsigned long timestamp; | |
3824 | }; | |
3825 | ||
1da177e4 LT |
3826 | /* |
3827 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3828 | * standalone procedure for queueing an asynchronous RENEW. | |
3829 | */ | |
9bc4e3ca | 3830 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3831 | { |
9bc4e3ca CL |
3832 | struct nfs4_renewdata *data = calldata; |
3833 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3834 | |
0851de06 AB |
3835 | if (atomic_read(&clp->cl_count) > 1) |
3836 | nfs4_schedule_state_renewal(clp); | |
3837 | nfs_put_client(clp); | |
9bc4e3ca | 3838 | kfree(data); |
dc96aef9 AB |
3839 | } |
3840 | ||
9bc4e3ca | 3841 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3842 | { |
9bc4e3ca CL |
3843 | struct nfs4_renewdata *data = calldata; |
3844 | struct nfs_client *clp = data->client; | |
3845 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3846 | |
3847 | if (task->tk_status < 0) { | |
95baa25c | 3848 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
3849 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
3850 | return; | |
3851 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 3852 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
3853 | return; |
3854 | } | |
3855 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 3856 | } |
452e9352 | 3857 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3858 | } |
3859 | ||
963d8fe5 TM |
3860 | static const struct rpc_call_ops nfs4_renew_ops = { |
3861 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3862 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3863 | }; |
3864 | ||
2f60ea6b | 3865 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
3866 | { |
3867 | struct rpc_message msg = { | |
3868 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3869 | .rpc_argp = clp, | |
b4454fe1 | 3870 | .rpc_cred = cred, |
1da177e4 | 3871 | }; |
9bc4e3ca | 3872 | struct nfs4_renewdata *data; |
1da177e4 | 3873 | |
2f60ea6b TM |
3874 | if (renew_flags == 0) |
3875 | return 0; | |
0851de06 AB |
3876 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3877 | return -EIO; | |
b569ad34 | 3878 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
3879 | if (data == NULL) |
3880 | return -ENOMEM; | |
3881 | data->client = clp; | |
3882 | data->timestamp = jiffies; | |
bc7a05ca | 3883 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT, |
9bc4e3ca | 3884 | &nfs4_renew_ops, data); |
1da177e4 LT |
3885 | } |
3886 | ||
8534d4ec | 3887 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3888 | { |
3889 | struct rpc_message msg = { | |
3890 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3891 | .rpc_argp = clp, | |
b4454fe1 | 3892 | .rpc_cred = cred, |
1da177e4 LT |
3893 | }; |
3894 | unsigned long now = jiffies; | |
3895 | int status; | |
3896 | ||
bc7a05ca | 3897 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
3898 | if (status < 0) |
3899 | return status; | |
452e9352 | 3900 | do_renew_lease(clp, now); |
1da177e4 LT |
3901 | return 0; |
3902 | } | |
3903 | ||
aa1870af BF |
3904 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3905 | { | |
3906 | return (server->caps & NFS_CAP_ACLS) | |
3907 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3908 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3909 | } | |
3910 | ||
21f498c2 TM |
3911 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that |
3912 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on | |
aa1870af BF |
3913 | * the stack. |
3914 | */ | |
21f498c2 | 3915 | #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) |
aa1870af | 3916 | |
e9e3d724 NH |
3917 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
3918 | struct page **pages, unsigned int *pgbase) | |
3919 | { | |
3920 | struct page *newpage, **spages; | |
3921 | int rc = 0; | |
3922 | size_t len; | |
3923 | spages = pages; | |
3924 | ||
3925 | do { | |
21f498c2 | 3926 | len = min_t(size_t, PAGE_SIZE, buflen); |
e9e3d724 NH |
3927 | newpage = alloc_page(GFP_KERNEL); |
3928 | ||
3929 | if (newpage == NULL) | |
3930 | goto unwind; | |
3931 | memcpy(page_address(newpage), buf, len); | |
3932 | buf += len; | |
3933 | buflen -= len; | |
3934 | *pages++ = newpage; | |
3935 | rc++; | |
3936 | } while (buflen != 0); | |
3937 | ||
3938 | return rc; | |
3939 | ||
3940 | unwind: | |
3941 | for(; rc > 0; rc--) | |
3942 | __free_page(spages[rc-1]); | |
3943 | return -ENOMEM; | |
3944 | } | |
3945 | ||
e50a1c2e BF |
3946 | struct nfs4_cached_acl { |
3947 | int cached; | |
3948 | size_t len; | |
3e9d4154 | 3949 | char data[0]; |
e50a1c2e BF |
3950 | }; |
3951 | ||
3952 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3953 | { | |
3954 | struct nfs_inode *nfsi = NFS_I(inode); | |
3955 | ||
3956 | spin_lock(&inode->i_lock); | |
3957 | kfree(nfsi->nfs4_acl); | |
3958 | nfsi->nfs4_acl = acl; | |
3959 | spin_unlock(&inode->i_lock); | |
3960 | } | |
3961 | ||
3962 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3963 | { | |
3964 | nfs4_set_cached_acl(inode, NULL); | |
3965 | } | |
3966 | ||
3967 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3968 | { | |
3969 | struct nfs_inode *nfsi = NFS_I(inode); | |
3970 | struct nfs4_cached_acl *acl; | |
3971 | int ret = -ENOENT; | |
3972 | ||
3973 | spin_lock(&inode->i_lock); | |
3974 | acl = nfsi->nfs4_acl; | |
3975 | if (acl == NULL) | |
3976 | goto out; | |
3977 | if (buf == NULL) /* user is just asking for length */ | |
3978 | goto out_len; | |
3979 | if (acl->cached == 0) | |
3980 | goto out; | |
3981 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3982 | if (acl->len > buflen) | |
3983 | goto out; | |
3984 | memcpy(buf, acl->data, acl->len); | |
3985 | out_len: | |
3986 | ret = acl->len; | |
3987 | out: | |
3988 | spin_unlock(&inode->i_lock); | |
3989 | return ret; | |
3990 | } | |
3991 | ||
5794d21e | 3992 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
3993 | { |
3994 | struct nfs4_cached_acl *acl; | |
b291f1b1 | 3995 | size_t buflen = sizeof(*acl) + acl_len; |
e50a1c2e | 3996 | |
1f1ea6c2 | 3997 | if (buflen <= PAGE_SIZE) { |
b291f1b1 | 3998 | acl = kmalloc(buflen, GFP_KERNEL); |
e50a1c2e BF |
3999 | if (acl == NULL) |
4000 | goto out; | |
4001 | acl->cached = 1; | |
5794d21e | 4002 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
4003 | } else { |
4004 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
4005 | if (acl == NULL) | |
4006 | goto out; | |
4007 | acl->cached = 0; | |
4008 | } | |
4009 | acl->len = acl_len; | |
4010 | out: | |
4011 | nfs4_set_cached_acl(inode, acl); | |
4012 | } | |
4013 | ||
bf118a34 AA |
4014 | /* |
4015 | * The getxattr API returns the required buffer length when called with a | |
4016 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
4017 | * the required buf. On a NULL buf, we send a page of data to the server | |
4018 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
4019 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
4020 | * the cache. If not so, we throw away the page, and cache the required | |
4021 | * length. The next getxattr call will then produce another round trip to | |
4022 | * the server, this time with the input buf of the required size. | |
4023 | */ | |
16b4289c | 4024 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 4025 | { |
bf118a34 | 4026 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
4027 | struct nfs_getaclargs args = { |
4028 | .fh = NFS_FH(inode), | |
4029 | .acl_pages = pages, | |
4030 | .acl_len = buflen, | |
4031 | }; | |
663c79b3 BH |
4032 | struct nfs_getaclres res = { |
4033 | .acl_len = buflen, | |
4034 | }; | |
aa1870af BF |
4035 | struct rpc_message msg = { |
4036 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
4037 | .rpc_argp = &args, | |
663c79b3 | 4038 | .rpc_resp = &res, |
aa1870af | 4039 | }; |
21f498c2 TM |
4040 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
4041 | int ret = -ENOMEM, i; | |
aa1870af | 4042 | |
bf118a34 AA |
4043 | /* As long as we're doing a round trip to the server anyway, |
4044 | * let's be prepared for a page of acl data. */ | |
4045 | if (npages == 0) | |
4046 | npages = 1; | |
21f498c2 TM |
4047 | if (npages > ARRAY_SIZE(pages)) |
4048 | return -ERANGE; | |
5a006899 | 4049 | |
bf118a34 AA |
4050 | for (i = 0; i < npages; i++) { |
4051 | pages[i] = alloc_page(GFP_KERNEL); | |
4052 | if (!pages[i]) | |
4053 | goto out_free; | |
e50a1c2e | 4054 | } |
5a006899 SP |
4055 | |
4056 | /* for decoding across pages */ | |
4057 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
4058 | if (!res.acl_scratch) | |
4059 | goto out_free; | |
4060 | ||
bf118a34 AA |
4061 | args.acl_len = npages * PAGE_SIZE; |
4062 | args.acl_pgbase = 0; | |
5a006899 | 4063 | |
de040bec | 4064 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
4065 | __func__, buf, buflen, npages, args.acl_len); |
4066 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
4067 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
4068 | if (ret) |
4069 | goto out_free; | |
bf118a34 | 4070 | |
1f1ea6c2 TM |
4071 | /* Handle the case where the passed-in buffer is too short */ |
4072 | if (res.acl_flags & NFS4_ACL_TRUNC) { | |
4073 | /* Did the user only issue a request for the acl length? */ | |
4074 | if (buf == NULL) | |
4075 | goto out_ok; | |
e50a1c2e | 4076 | ret = -ERANGE; |
1f1ea6c2 | 4077 | goto out_free; |
e50a1c2e | 4078 | } |
1f1ea6c2 | 4079 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 SW |
4080 | if (buf) { |
4081 | if (res.acl_len > buflen) { | |
4082 | ret = -ERANGE; | |
4083 | goto out_free; | |
4084 | } | |
1f1ea6c2 | 4085 | _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 | 4086 | } |
1f1ea6c2 TM |
4087 | out_ok: |
4088 | ret = res.acl_len; | |
e50a1c2e | 4089 | out_free: |
bf118a34 AA |
4090 | for (i = 0; i < npages; i++) |
4091 | if (pages[i]) | |
4092 | __free_page(pages[i]); | |
331818f1 TM |
4093 | if (res.acl_scratch) |
4094 | __free_page(res.acl_scratch); | |
aa1870af BF |
4095 | return ret; |
4096 | } | |
4097 | ||
16b4289c TM |
4098 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
4099 | { | |
4100 | struct nfs4_exception exception = { }; | |
4101 | ssize_t ret; | |
4102 | do { | |
4103 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
4104 | if (ret >= 0) | |
4105 | break; | |
4106 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
4107 | } while (exception.retry); | |
4108 | return ret; | |
4109 | } | |
4110 | ||
e50a1c2e BF |
4111 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
4112 | { | |
4113 | struct nfs_server *server = NFS_SERVER(inode); | |
4114 | int ret; | |
4115 | ||
4116 | if (!nfs4_server_supports_acls(server)) | |
4117 | return -EOPNOTSUPP; | |
4118 | ret = nfs_revalidate_inode(server, inode); | |
4119 | if (ret < 0) | |
4120 | return ret; | |
08a22b39 AK |
4121 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
4122 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
4123 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
4124 | if (ret != -ENOENT) | |
bf118a34 AA |
4125 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
4126 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
4127 | return ret; |
4128 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
4129 | } | |
4130 | ||
16b4289c | 4131 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
4132 | { |
4133 | struct nfs_server *server = NFS_SERVER(inode); | |
4134 | struct page *pages[NFS4ACL_MAXPAGES]; | |
4135 | struct nfs_setaclargs arg = { | |
4136 | .fh = NFS_FH(inode), | |
4137 | .acl_pages = pages, | |
4138 | .acl_len = buflen, | |
4139 | }; | |
73c403a9 | 4140 | struct nfs_setaclres res; |
4b580ee3 BF |
4141 | struct rpc_message msg = { |
4142 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
4143 | .rpc_argp = &arg, | |
73c403a9 | 4144 | .rpc_resp = &res, |
4b580ee3 | 4145 | }; |
21f498c2 | 4146 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
e9e3d724 | 4147 | int ret, i; |
4b580ee3 BF |
4148 | |
4149 | if (!nfs4_server_supports_acls(server)) | |
4150 | return -EOPNOTSUPP; | |
21f498c2 TM |
4151 | if (npages > ARRAY_SIZE(pages)) |
4152 | return -ERANGE; | |
e9e3d724 NH |
4153 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
4154 | if (i < 0) | |
4155 | return i; | |
57ec14c5 | 4156 | nfs4_inode_return_delegation(inode); |
7c513058 | 4157 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
4158 | |
4159 | /* | |
4160 | * Free each page after tx, so the only ref left is | |
4161 | * held by the network stack | |
4162 | */ | |
4163 | for (; i > 0; i--) | |
4164 | put_page(pages[i-1]); | |
4165 | ||
08a22b39 AK |
4166 | /* |
4167 | * Acl update can result in inode attribute update. | |
4168 | * so mark the attribute cache invalid. | |
4169 | */ | |
4170 | spin_lock(&inode->i_lock); | |
4171 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
4172 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
4173 | nfs_access_zap_cache(inode); |
4174 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
4175 | return ret; |
4176 | } | |
4177 | ||
16b4289c TM |
4178 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4179 | { | |
4180 | struct nfs4_exception exception = { }; | |
4181 | int err; | |
4182 | do { | |
4183 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
4184 | __nfs4_proc_set_acl(inode, buf, buflen), | |
4185 | &exception); | |
4186 | } while (exception.retry); | |
4187 | return err; | |
4188 | } | |
4189 | ||
1da177e4 | 4190 | static int |
aa5190d0 | 4191 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 4192 | { |
aa5190d0 TM |
4193 | struct nfs_client *clp = server->nfs_client; |
4194 | ||
4195 | if (task->tk_status >= 0) | |
1da177e4 LT |
4196 | return 0; |
4197 | switch(task->tk_status) { | |
a1d0b5ee | 4198 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
4199 | case -NFS4ERR_ADMIN_REVOKED: |
4200 | case -NFS4ERR_BAD_STATEID: | |
14977489 TM |
4201 | if (state == NULL) |
4202 | break; | |
4203 | nfs_remove_bad_delegation(state->inode); | |
9e33bed5 TM |
4204 | case -NFS4ERR_OPENMODE: |
4205 | if (state == NULL) | |
4206 | break; | |
5d422301 TM |
4207 | if (nfs4_schedule_stateid_recovery(server, state) < 0) |
4208 | goto stateid_invalid; | |
0400a6b0 | 4209 | goto wait_on_recovery; |
0ced63d1 | 4210 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
4211 | if (state != NULL) { |
4212 | if (nfs4_schedule_stateid_recovery(server, state) < 0) | |
4213 | goto stateid_invalid; | |
4214 | } | |
1da177e4 | 4215 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 4216 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
4217 | nfs4_schedule_lease_recovery(clp); |
4218 | goto wait_on_recovery; | |
4745e315 AA |
4219 | #if defined(CONFIG_NFS_V4_1) |
4220 | case -NFS4ERR_BADSESSION: | |
4221 | case -NFS4ERR_BADSLOT: | |
4222 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4223 | case -NFS4ERR_DEADSESSION: | |
4224 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4225 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
4226 | case -NFS4ERR_SEQ_MISORDERED: | |
4227 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
4228 | task->tk_status); | |
9f594791 | 4229 | nfs4_schedule_session_recovery(clp->cl_session, task->tk_status); |
4745e315 AA |
4230 | task->tk_status = 0; |
4231 | return -EAGAIN; | |
4232 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 4233 | case -NFS4ERR_DELAY: |
aa5190d0 | 4234 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 4235 | case -NFS4ERR_GRACE: |
1da177e4 LT |
4236 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
4237 | task->tk_status = 0; | |
4238 | return -EAGAIN; | |
a8a4ae3a | 4239 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
4240 | case -NFS4ERR_OLD_STATEID: |
4241 | task->tk_status = 0; | |
4242 | return -EAGAIN; | |
4243 | } | |
4244 | task->tk_status = nfs4_map_errors(task->tk_status); | |
4245 | return 0; | |
5d422301 TM |
4246 | stateid_invalid: |
4247 | task->tk_status = -EIO; | |
4248 | return 0; | |
0400a6b0 | 4249 | wait_on_recovery: |
a2c0b9e2 | 4250 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
4251 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
4252 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
4253 | task->tk_status = 0; | |
4254 | return -EAGAIN; | |
1da177e4 LT |
4255 | } |
4256 | ||
f092075d CL |
4257 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
4258 | nfs4_verifier *bootverf) | |
cd93710e CL |
4259 | { |
4260 | __be32 verf[2]; | |
4261 | ||
2c820d9a CL |
4262 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
4263 | /* An impossible timestamp guarantees this value | |
4264 | * will never match a generated boot time. */ | |
4265 | verf[0] = 0; | |
4266 | verf[1] = (__be32)(NSEC_PER_SEC + 1); | |
4267 | } else { | |
f092075d CL |
4268 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
4269 | verf[0] = (__be32)nn->boot_time.tv_sec; | |
4270 | verf[1] = (__be32)nn->boot_time.tv_nsec; | |
2c820d9a | 4271 | } |
cd93710e CL |
4272 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
4273 | } | |
4274 | ||
e984a55a CL |
4275 | static unsigned int |
4276 | nfs4_init_nonuniform_client_string(const struct nfs_client *clp, | |
4277 | char *buf, size_t len) | |
4278 | { | |
4279 | unsigned int result; | |
4280 | ||
4281 | rcu_read_lock(); | |
4282 | result = scnprintf(buf, len, "Linux NFSv4.0 %s/%s %s", | |
4283 | clp->cl_ipaddr, | |
4284 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4285 | RPC_DISPLAY_ADDR), | |
4286 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4287 | RPC_DISPLAY_PROTO)); | |
4288 | rcu_read_unlock(); | |
4289 | return result; | |
4290 | } | |
4291 | ||
4292 | static unsigned int | |
4293 | nfs4_init_uniform_client_string(const struct nfs_client *clp, | |
4294 | char *buf, size_t len) | |
4295 | { | |
6f2ea7f2 CL |
4296 | char *nodename = clp->cl_rpcclient->cl_nodename; |
4297 | ||
4298 | if (nfs4_client_id_uniquifier[0] != '\0') | |
4299 | nodename = nfs4_client_id_uniquifier; | |
e984a55a CL |
4300 | return scnprintf(buf, len, "Linux NFSv%u.%u %s", |
4301 | clp->rpc_ops->version, clp->cl_minorversion, | |
6f2ea7f2 | 4302 | nodename); |
e984a55a CL |
4303 | } |
4304 | ||
6bbb4ae8 CL |
4305 | /** |
4306 | * nfs4_proc_setclientid - Negotiate client ID | |
4307 | * @clp: state data structure | |
4308 | * @program: RPC program for NFSv4 callback service | |
4309 | * @port: IP port number for NFS4 callback service | |
4310 | * @cred: RPC credential to use for this call | |
4311 | * @res: where to place the result | |
4312 | * | |
4313 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4314 | */ | |
bb8b27e5 TM |
4315 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
4316 | unsigned short port, struct rpc_cred *cred, | |
4317 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
4318 | { |
4319 | nfs4_verifier sc_verifier; | |
4320 | struct nfs4_setclientid setclientid = { | |
4321 | .sc_verifier = &sc_verifier, | |
4322 | .sc_prog = program, | |
f4eecd5d | 4323 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
4324 | }; |
4325 | struct rpc_message msg = { | |
4326 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
4327 | .rpc_argp = &setclientid, | |
bb8b27e5 | 4328 | .rpc_resp = res, |
286d7d6a | 4329 | .rpc_cred = cred, |
1da177e4 | 4330 | }; |
6bbb4ae8 | 4331 | int status; |
1da177e4 | 4332 | |
de734831 | 4333 | /* nfs_client_id4 */ |
f092075d | 4334 | nfs4_init_boot_verifier(clp, &sc_verifier); |
e984a55a CL |
4335 | if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags)) |
4336 | setclientid.sc_name_len = | |
4337 | nfs4_init_uniform_client_string(clp, | |
4338 | setclientid.sc_name, | |
4339 | sizeof(setclientid.sc_name)); | |
4340 | else | |
4341 | setclientid.sc_name_len = | |
4342 | nfs4_init_nonuniform_client_string(clp, | |
4343 | setclientid.sc_name, | |
4344 | sizeof(setclientid.sc_name)); | |
de734831 | 4345 | /* cb_client4 */ |
e984a55a | 4346 | rcu_read_lock(); |
de734831 | 4347 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, |
d4d3c507 CL |
4348 | sizeof(setclientid.sc_netid), |
4349 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4350 | RPC_DISPLAY_NETID)); | |
de734831 CL |
4351 | rcu_read_unlock(); |
4352 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, | |
d4d3c507 | 4353 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
4354 | clp->cl_ipaddr, port >> 8, port & 255); |
4355 | ||
6bbb4ae8 CL |
4356 | dprintk("NFS call setclientid auth=%s, '%.*s'\n", |
4357 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4358 | setclientid.sc_name_len, setclientid.sc_name); | |
4359 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
4360 | dprintk("NFS reply setclientid: %d\n", status); | |
4361 | return status; | |
1da177e4 LT |
4362 | } |
4363 | ||
6bbb4ae8 CL |
4364 | /** |
4365 | * nfs4_proc_setclientid_confirm - Confirm client ID | |
4366 | * @clp: state data structure | |
4367 | * @res: result of a previous SETCLIENTID | |
4368 | * @cred: RPC credential to use for this call | |
4369 | * | |
4370 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4371 | */ | |
fd954ae1 | 4372 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
4373 | struct nfs4_setclientid_res *arg, |
4374 | struct rpc_cred *cred) | |
1da177e4 | 4375 | { |
1da177e4 LT |
4376 | struct rpc_message msg = { |
4377 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 4378 | .rpc_argp = arg, |
286d7d6a | 4379 | .rpc_cred = cred, |
1da177e4 | 4380 | }; |
1da177e4 LT |
4381 | int status; |
4382 | ||
6bbb4ae8 CL |
4383 | dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", |
4384 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4385 | clp->cl_clientid); | |
1bd714f2 | 4386 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
6bbb4ae8 | 4387 | dprintk("NFS reply setclientid_confirm: %d\n", status); |
1da177e4 LT |
4388 | return status; |
4389 | } | |
4390 | ||
fe650407 TM |
4391 | struct nfs4_delegreturndata { |
4392 | struct nfs4_delegreturnargs args; | |
fa178f29 | 4393 | struct nfs4_delegreturnres res; |
fe650407 TM |
4394 | struct nfs_fh fh; |
4395 | nfs4_stateid stateid; | |
26e976a8 | 4396 | unsigned long timestamp; |
fa178f29 | 4397 | struct nfs_fattr fattr; |
fe650407 TM |
4398 | int rpc_status; |
4399 | }; | |
4400 | ||
fe650407 TM |
4401 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
4402 | { | |
4403 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 4404 | |
14516c3a TM |
4405 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4406 | return; | |
938e1010 | 4407 | |
79708861 RL |
4408 | switch (task->tk_status) { |
4409 | case -NFS4ERR_STALE_STATEID: | |
4410 | case -NFS4ERR_EXPIRED: | |
4411 | case 0: | |
fa178f29 | 4412 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
4413 | break; |
4414 | default: | |
4415 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
4416 | -EAGAIN) { | |
d00c5d43 | 4417 | rpc_restart_call_prepare(task); |
79708861 RL |
4418 | return; |
4419 | } | |
4420 | } | |
4421 | data->rpc_status = task->tk_status; | |
fe650407 TM |
4422 | } |
4423 | ||
4424 | static void nfs4_delegreturn_release(void *calldata) | |
4425 | { | |
fe650407 TM |
4426 | kfree(calldata); |
4427 | } | |
4428 | ||
938e1010 AA |
4429 | #if defined(CONFIG_NFS_V4_1) |
4430 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
4431 | { | |
4432 | struct nfs4_delegreturndata *d_data; | |
4433 | ||
4434 | d_data = (struct nfs4_delegreturndata *)data; | |
4435 | ||
d9afbd1b TM |
4436 | nfs4_setup_sequence(d_data->res.server, |
4437 | &d_data->args.seq_args, | |
4438 | &d_data->res.seq_res, | |
4439 | task); | |
938e1010 AA |
4440 | } |
4441 | #endif /* CONFIG_NFS_V4_1 */ | |
4442 | ||
c8d149f3 | 4443 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
4444 | #if defined(CONFIG_NFS_V4_1) |
4445 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
4446 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
4447 | .rpc_call_done = nfs4_delegreturn_done, |
4448 | .rpc_release = nfs4_delegreturn_release, | |
4449 | }; | |
4450 | ||
e6f81075 | 4451 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
4452 | { |
4453 | struct nfs4_delegreturndata *data; | |
fa178f29 | 4454 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 4455 | struct rpc_task *task; |
5138fde0 TM |
4456 | struct rpc_message msg = { |
4457 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
4458 | .rpc_cred = cred, | |
4459 | }; | |
c970aa85 TM |
4460 | struct rpc_task_setup task_setup_data = { |
4461 | .rpc_client = server->client, | |
5138fde0 | 4462 | .rpc_message = &msg, |
c970aa85 TM |
4463 | .callback_ops = &nfs4_delegreturn_ops, |
4464 | .flags = RPC_TASK_ASYNC, | |
4465 | }; | |
e6f81075 | 4466 | int status = 0; |
fe650407 | 4467 | |
8535b2be | 4468 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
4469 | if (data == NULL) |
4470 | return -ENOMEM; | |
9d12b216 | 4471 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
4472 | data->args.fhandle = &data->fh; |
4473 | data->args.stateid = &data->stateid; | |
9e907fec | 4474 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 4475 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 4476 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
4477 | data->res.fattr = &data->fattr; |
4478 | data->res.server = server; | |
5138fde0 | 4479 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 4480 | data->timestamp = jiffies; |
fe650407 TM |
4481 | data->rpc_status = 0; |
4482 | ||
c970aa85 | 4483 | task_setup_data.callback_data = data; |
1174dd1f TM |
4484 | msg.rpc_argp = &data->args; |
4485 | msg.rpc_resp = &data->res; | |
c970aa85 | 4486 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 4487 | if (IS_ERR(task)) |
fe650407 | 4488 | return PTR_ERR(task); |
e6f81075 TM |
4489 | if (!issync) |
4490 | goto out; | |
fe650407 | 4491 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
4492 | if (status != 0) |
4493 | goto out; | |
4494 | status = data->rpc_status; | |
e144cbcc TM |
4495 | if (status == 0) |
4496 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
4497 | else | |
4498 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 4499 | out: |
e6b3c4db | 4500 | rpc_put_task(task); |
fe650407 | 4501 | return status; |
1da177e4 LT |
4502 | } |
4503 | ||
e6f81075 | 4504 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
4505 | { |
4506 | struct nfs_server *server = NFS_SERVER(inode); | |
4507 | struct nfs4_exception exception = { }; | |
4508 | int err; | |
4509 | do { | |
e6f81075 | 4510 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
4511 | switch (err) { |
4512 | case -NFS4ERR_STALE_STATEID: | |
4513 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
4514 | case 0: |
4515 | return 0; | |
4516 | } | |
4517 | err = nfs4_handle_exception(server, err, &exception); | |
4518 | } while (exception.retry); | |
4519 | return err; | |
4520 | } | |
4521 | ||
4522 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
4523 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
4524 | ||
4525 | /* | |
4526 | * sleep, with exponential backoff, and retry the LOCK operation. | |
4527 | */ | |
4528 | static unsigned long | |
4529 | nfs4_set_lock_task_retry(unsigned long timeout) | |
4530 | { | |
d310310c | 4531 | freezable_schedule_timeout_killable(timeout); |
1da177e4 LT |
4532 | timeout <<= 1; |
4533 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
4534 | return NFS4_LOCK_MAXTIMEOUT; | |
4535 | return timeout; | |
4536 | } | |
4537 | ||
1da177e4 LT |
4538 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4539 | { | |
4540 | struct inode *inode = state->inode; | |
4541 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 4542 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 4543 | struct nfs_lockt_args arg = { |
1da177e4 | 4544 | .fh = NFS_FH(inode), |
911d1aaf | 4545 | .fl = request, |
1da177e4 | 4546 | }; |
911d1aaf TM |
4547 | struct nfs_lockt_res res = { |
4548 | .denied = request, | |
1da177e4 LT |
4549 | }; |
4550 | struct rpc_message msg = { | |
4551 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
4552 | .rpc_argp = &arg, | |
4553 | .rpc_resp = &res, | |
4554 | .rpc_cred = state->owner->so_cred, | |
4555 | }; | |
1da177e4 LT |
4556 | struct nfs4_lock_state *lsp; |
4557 | int status; | |
4558 | ||
911d1aaf | 4559 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
4560 | status = nfs4_set_lock_state(state, request); |
4561 | if (status != 0) | |
4562 | goto out; | |
4563 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 4564 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4565 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 4566 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
4567 | switch (status) { |
4568 | case 0: | |
4569 | request->fl_type = F_UNLCK; | |
4570 | break; | |
4571 | case -NFS4ERR_DENIED: | |
4572 | status = 0; | |
1da177e4 | 4573 | } |
70cc6487 | 4574 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 4575 | out: |
1da177e4 LT |
4576 | return status; |
4577 | } | |
4578 | ||
4579 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4580 | { | |
4581 | struct nfs4_exception exception = { }; | |
4582 | int err; | |
4583 | ||
4584 | do { | |
4585 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
4586 | _nfs4_proc_getlk(state, cmd, request), | |
4587 | &exception); | |
4588 | } while (exception.retry); | |
4589 | return err; | |
4590 | } | |
4591 | ||
4592 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
4593 | { | |
4594 | int res = 0; | |
4595 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
4596 | case FL_POSIX: | |
4597 | res = posix_lock_file_wait(file, fl); | |
4598 | break; | |
4599 | case FL_FLOCK: | |
4600 | res = flock_lock_file_wait(file, fl); | |
4601 | break; | |
4602 | default: | |
4603 | BUG(); | |
4604 | } | |
1da177e4 LT |
4605 | return res; |
4606 | } | |
4607 | ||
faf5f49c | 4608 | struct nfs4_unlockdata { |
911d1aaf TM |
4609 | struct nfs_locku_args arg; |
4610 | struct nfs_locku_res res; | |
faf5f49c TM |
4611 | struct nfs4_lock_state *lsp; |
4612 | struct nfs_open_context *ctx; | |
911d1aaf TM |
4613 | struct file_lock fl; |
4614 | const struct nfs_server *server; | |
26e976a8 | 4615 | unsigned long timestamp; |
faf5f49c TM |
4616 | }; |
4617 | ||
911d1aaf TM |
4618 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
4619 | struct nfs_open_context *ctx, | |
4620 | struct nfs4_lock_state *lsp, | |
4621 | struct nfs_seqid *seqid) | |
4622 | { | |
4623 | struct nfs4_unlockdata *p; | |
4624 | struct inode *inode = lsp->ls_state->inode; | |
4625 | ||
8535b2be | 4626 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
4627 | if (p == NULL) |
4628 | return NULL; | |
4629 | p->arg.fh = NFS_FH(inode); | |
4630 | p->arg.fl = &p->fl; | |
4631 | p->arg.seqid = seqid; | |
c1d51931 | 4632 | p->res.seqid = seqid; |
911d1aaf TM |
4633 | p->arg.stateid = &lsp->ls_stateid; |
4634 | p->lsp = lsp; | |
4635 | atomic_inc(&lsp->ls_count); | |
4636 | /* Ensure we don't close file until we're done freeing locks! */ | |
4637 | p->ctx = get_nfs_open_context(ctx); | |
4638 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4639 | p->server = NFS_SERVER(inode); | |
4640 | return p; | |
4641 | } | |
4642 | ||
06f814a3 | 4643 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 4644 | { |
963d8fe5 | 4645 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 4646 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
4647 | nfs4_put_lock_state(calldata->lsp); |
4648 | put_nfs_open_context(calldata->ctx); | |
4649 | kfree(calldata); | |
faf5f49c TM |
4650 | } |
4651 | ||
963d8fe5 | 4652 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 4653 | { |
963d8fe5 | 4654 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4655 | |
14516c3a TM |
4656 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
4657 | return; | |
faf5f49c TM |
4658 | switch (task->tk_status) { |
4659 | case 0: | |
f597c537 TM |
4660 | nfs4_stateid_copy(&calldata->lsp->ls_stateid, |
4661 | &calldata->res.stateid); | |
26e976a8 | 4662 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 4663 | break; |
9e33bed5 TM |
4664 | case -NFS4ERR_BAD_STATEID: |
4665 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
4666 | case -NFS4ERR_STALE_STATEID: |
4667 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
4668 | break; |
4669 | default: | |
9e33bed5 | 4670 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
d00c5d43 | 4671 | rpc_restart_call_prepare(task); |
faf5f49c | 4672 | } |
2b1bc308 | 4673 | nfs_release_seqid(calldata->arg.seqid); |
faf5f49c TM |
4674 | } |
4675 | ||
4ce70ada | 4676 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 4677 | { |
4ce70ada | 4678 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4679 | |
911d1aaf | 4680 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 4681 | goto out_wait; |
795a88c9 | 4682 | if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) { |
963d8fe5 | 4683 | /* Note: exit _without_ running nfs4_locku_done */ |
c8da19b9 | 4684 | goto out_no_action; |
faf5f49c | 4685 | } |
26e976a8 | 4686 | calldata->timestamp = jiffies; |
035168ab | 4687 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 4688 | &calldata->arg.seq_args, |
2240a9e2 TM |
4689 | &calldata->res.seq_res, |
4690 | task) != 0) | |
4691 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 TM |
4692 | return; |
4693 | out_no_action: | |
4694 | task->tk_action = NULL; | |
4695 | out_wait: | |
4696 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
faf5f49c TM |
4697 | } |
4698 | ||
963d8fe5 | 4699 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 4700 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 4701 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 4702 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
4703 | }; |
4704 | ||
a5d16a4d TM |
4705 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
4706 | struct nfs_open_context *ctx, | |
4707 | struct nfs4_lock_state *lsp, | |
4708 | struct nfs_seqid *seqid) | |
4709 | { | |
4710 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
4711 | struct rpc_message msg = { |
4712 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
4713 | .rpc_cred = ctx->cred, | |
4714 | }; | |
c970aa85 TM |
4715 | struct rpc_task_setup task_setup_data = { |
4716 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 4717 | .rpc_message = &msg, |
c970aa85 | 4718 | .callback_ops = &nfs4_locku_ops, |
101070ca | 4719 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4720 | .flags = RPC_TASK_ASYNC, |
4721 | }; | |
a5d16a4d | 4722 | |
137d6aca FF |
4723 | /* Ensure this is an unlock - when canceling a lock, the |
4724 | * canceled lock is passed in, and it won't be an unlock. | |
4725 | */ | |
4726 | fl->fl_type = F_UNLCK; | |
4727 | ||
a5d16a4d TM |
4728 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
4729 | if (data == NULL) { | |
4730 | nfs_free_seqid(seqid); | |
4731 | return ERR_PTR(-ENOMEM); | |
4732 | } | |
4733 | ||
9d12b216 | 4734 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4735 | msg.rpc_argp = &data->arg; |
4736 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4737 | task_setup_data.callback_data = data; |
4738 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
4739 | } |
4740 | ||
faf5f49c TM |
4741 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
4742 | { | |
65b62a29 TM |
4743 | struct inode *inode = state->inode; |
4744 | struct nfs4_state_owner *sp = state->owner; | |
4745 | struct nfs_inode *nfsi = NFS_I(inode); | |
911d1aaf | 4746 | struct nfs_seqid *seqid; |
1da177e4 | 4747 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
4748 | struct rpc_task *task; |
4749 | int status = 0; | |
536ff0f8 | 4750 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 4751 | |
8d0a8a9d | 4752 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
4753 | /* Unlock _before_ we do the RPC call */ |
4754 | request->fl_flags |= FL_EXISTS; | |
65b62a29 TM |
4755 | /* Exclude nfs_delegation_claim_locks() */ |
4756 | mutex_lock(&sp->so_delegreturn_mutex); | |
4757 | /* Exclude nfs4_reclaim_open_stateid() - note nesting! */ | |
19e03c57 TM |
4758 | down_read(&nfsi->rwsem); |
4759 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
4760 | up_read(&nfsi->rwsem); | |
65b62a29 | 4761 | mutex_unlock(&sp->so_delegreturn_mutex); |
9b073574 | 4762 | goto out; |
19e03c57 TM |
4763 | } |
4764 | up_read(&nfsi->rwsem); | |
65b62a29 | 4765 | mutex_unlock(&sp->so_delegreturn_mutex); |
8d0a8a9d | 4766 | if (status != 0) |
9b073574 TM |
4767 | goto out; |
4768 | /* Is this a delegated lock? */ | |
8d0a8a9d | 4769 | lsp = request->fl_u.nfs4_fl.owner; |
c5a2a15f TM |
4770 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) == 0) |
4771 | goto out; | |
8535b2be | 4772 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 4773 | status = -ENOMEM; |
911d1aaf | 4774 | if (seqid == NULL) |
9b073574 | 4775 | goto out; |
cd3758e3 | 4776 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
4777 | status = PTR_ERR(task); |
4778 | if (IS_ERR(task)) | |
9b073574 | 4779 | goto out; |
a5d16a4d | 4780 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 4781 | rpc_put_task(task); |
9b073574 | 4782 | out: |
536ff0f8 | 4783 | request->fl_flags = fl_flags; |
1da177e4 LT |
4784 | return status; |
4785 | } | |
4786 | ||
a5d16a4d TM |
4787 | struct nfs4_lockdata { |
4788 | struct nfs_lock_args arg; | |
4789 | struct nfs_lock_res res; | |
4790 | struct nfs4_lock_state *lsp; | |
4791 | struct nfs_open_context *ctx; | |
4792 | struct file_lock fl; | |
26e976a8 | 4793 | unsigned long timestamp; |
a5d16a4d TM |
4794 | int rpc_status; |
4795 | int cancelled; | |
66179efe | 4796 | struct nfs_server *server; |
a5d16a4d TM |
4797 | }; |
4798 | ||
4799 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
4800 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
4801 | gfp_t gfp_mask) | |
1da177e4 | 4802 | { |
a5d16a4d TM |
4803 | struct nfs4_lockdata *p; |
4804 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 4805 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 4806 | |
8535b2be | 4807 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
4808 | if (p == NULL) |
4809 | return NULL; | |
4810 | ||
4811 | p->arg.fh = NFS_FH(inode); | |
4812 | p->arg.fl = &p->fl; | |
8535b2be | 4813 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4814 | if (p->arg.open_seqid == NULL) |
4815 | goto out_free; | |
8535b2be | 4816 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4817 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4818 | goto out_free_seqid; |
a5d16a4d | 4819 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4820 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 4821 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4822 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 4823 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4824 | p->lsp = lsp; |
66179efe | 4825 | p->server = server; |
a5d16a4d TM |
4826 | atomic_inc(&lsp->ls_count); |
4827 | p->ctx = get_nfs_open_context(ctx); | |
4828 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4829 | return p; | |
2f74c0a0 TM |
4830 | out_free_seqid: |
4831 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4832 | out_free: |
4833 | kfree(p); | |
4834 | return NULL; | |
4835 | } | |
4836 | ||
4837 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4838 | { | |
4839 | struct nfs4_lockdata *data = calldata; | |
4840 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4841 | |
3110ff80 | 4842 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4843 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
c8da19b9 | 4844 | goto out_wait; |
a5d16a4d TM |
4845 | /* Do we need to do an open_to_lock_owner? */ |
4846 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
8fe72bac | 4847 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) { |
2240a9e2 | 4848 | goto out_release_lock_seqid; |
8fe72bac | 4849 | } |
8e472f33 | 4850 | data->arg.open_stateid = &state->open_stateid; |
a5d16a4d | 4851 | data->arg.new_lock_owner = 1; |
c1d51931 | 4852 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4853 | } else |
4854 | data->arg.new_lock_owner = 0; | |
5d422301 TM |
4855 | if (!nfs4_valid_open_stateid(state)) { |
4856 | data->rpc_status = -EBADF; | |
4857 | task->tk_action = NULL; | |
4858 | goto out_release_open_seqid; | |
4859 | } | |
26e976a8 | 4860 | data->timestamp = jiffies; |
035168ab TM |
4861 | if (nfs4_setup_sequence(data->server, |
4862 | &data->arg.seq_args, | |
2240a9e2 | 4863 | &data->res.seq_res, |
d9afbd1b | 4864 | task) == 0) |
66179efe | 4865 | return; |
5d422301 | 4866 | out_release_open_seqid: |
2240a9e2 TM |
4867 | nfs_release_seqid(data->arg.open_seqid); |
4868 | out_release_lock_seqid: | |
4869 | nfs_release_seqid(data->arg.lock_seqid); | |
c8da19b9 TM |
4870 | out_wait: |
4871 | nfs4_sequence_done(task, &data->res.seq_res); | |
8fe72bac | 4872 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
b257957e AB |
4873 | } |
4874 | ||
a5d16a4d TM |
4875 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4876 | { | |
4877 | struct nfs4_lockdata *data = calldata; | |
4878 | ||
3110ff80 | 4879 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4880 | |
14516c3a TM |
4881 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4882 | return; | |
66179efe | 4883 | |
a5d16a4d | 4884 | data->rpc_status = task->tk_status; |
a5d16a4d | 4885 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4886 | if (data->rpc_status == 0) |
4887 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4888 | else | |
4889 | goto out; | |
4890 | } | |
4891 | if (data->rpc_status == 0) { | |
f597c537 | 4892 | nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid); |
795a88c9 | 4893 | set_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags); |
3d4ff43d | 4894 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 4895 | } |
a5d16a4d | 4896 | out: |
3110ff80 | 4897 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4898 | } |
4899 | ||
4900 | static void nfs4_lock_release(void *calldata) | |
4901 | { | |
4902 | struct nfs4_lockdata *data = calldata; | |
4903 | ||
3110ff80 | 4904 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4905 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4906 | if (data->cancelled != 0) { |
4907 | struct rpc_task *task; | |
4908 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4909 | data->arg.lock_seqid); | |
4910 | if (!IS_ERR(task)) | |
bf294b41 | 4911 | rpc_put_task_async(task); |
3110ff80 | 4912 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4913 | } else |
4914 | nfs_free_seqid(data->arg.lock_seqid); | |
4915 | nfs4_put_lock_state(data->lsp); | |
4916 | put_nfs_open_context(data->ctx); | |
4917 | kfree(data); | |
3110ff80 | 4918 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4919 | } |
4920 | ||
4921 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4922 | .rpc_call_prepare = nfs4_lock_prepare, | |
4923 | .rpc_call_done = nfs4_lock_done, | |
4924 | .rpc_release = nfs4_lock_release, | |
4925 | }; | |
4926 | ||
2bee72a6 TM |
4927 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4928 | { | |
2bee72a6 TM |
4929 | switch (error) { |
4930 | case -NFS4ERR_ADMIN_REVOKED: | |
4931 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 4932 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 | 4933 | if (new_lock_owner != 0 || |
795a88c9 | 4934 | test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0) |
ecac799a | 4935 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
4936 | break; |
4937 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 4938 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
4939 | case -NFS4ERR_EXPIRED: |
4940 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
4941 | }; |
4942 | } | |
4943 | ||
afe6c27c | 4944 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4945 | { |
4946 | struct nfs4_lockdata *data; | |
4947 | struct rpc_task *task; | |
5138fde0 TM |
4948 | struct rpc_message msg = { |
4949 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4950 | .rpc_cred = state->owner->so_cred, | |
4951 | }; | |
c970aa85 TM |
4952 | struct rpc_task_setup task_setup_data = { |
4953 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4954 | .rpc_message = &msg, |
c970aa85 | 4955 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4956 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4957 | .flags = RPC_TASK_ASYNC, |
4958 | }; | |
a5d16a4d TM |
4959 | int ret; |
4960 | ||
3110ff80 | 4961 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4962 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4963 | fl->fl_u.nfs4_fl.owner, |
4964 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4965 | if (data == NULL) |
4966 | return -ENOMEM; | |
4967 | if (IS_SETLKW(cmd)) | |
4968 | data->arg.block = 1; | |
9d12b216 | 4969 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4970 | msg.rpc_argp = &data->arg; |
4971 | msg.rpc_resp = &data->res; | |
c970aa85 | 4972 | task_setup_data.callback_data = data; |
8fe72bac TM |
4973 | if (recovery_type > NFS_LOCK_NEW) { |
4974 | if (recovery_type == NFS_LOCK_RECLAIM) | |
4975 | data->arg.reclaim = NFS_LOCK_RECLAIM; | |
4976 | nfs4_set_sequence_privileged(&data->arg.seq_args); | |
4977 | } | |
c970aa85 | 4978 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 4979 | if (IS_ERR(task)) |
a5d16a4d | 4980 | return PTR_ERR(task); |
a5d16a4d TM |
4981 | ret = nfs4_wait_for_completion_rpc_task(task); |
4982 | if (ret == 0) { | |
4983 | ret = data->rpc_status; | |
2bee72a6 TM |
4984 | if (ret) |
4985 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4986 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4987 | } else |
4988 | data->cancelled = 1; | |
e6b3c4db | 4989 | rpc_put_task(task); |
3110ff80 | 4990 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4991 | return ret; |
1da177e4 LT |
4992 | } |
4993 | ||
4994 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4995 | { | |
202b50dc | 4996 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4997 | struct nfs4_exception exception = { |
4998 | .inode = state->inode, | |
4999 | }; | |
202b50dc TM |
5000 | int err; |
5001 | ||
5002 | do { | |
42a2d13e TM |
5003 | /* Cache the lock if possible... */ |
5004 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
5005 | return 0; | |
afe6c27c | 5006 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 5007 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
5008 | break; |
5009 | nfs4_handle_exception(server, err, &exception); | |
5010 | } while (exception.retry); | |
5011 | return err; | |
1da177e4 LT |
5012 | } |
5013 | ||
5014 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
5015 | { | |
202b50dc | 5016 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
5017 | struct nfs4_exception exception = { |
5018 | .inode = state->inode, | |
5019 | }; | |
202b50dc TM |
5020 | int err; |
5021 | ||
6bfc93ef TM |
5022 | err = nfs4_set_lock_state(state, request); |
5023 | if (err != 0) | |
5024 | return err; | |
202b50dc | 5025 | do { |
42a2d13e TM |
5026 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
5027 | return 0; | |
afe6c27c | 5028 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
5029 | switch (err) { |
5030 | default: | |
5031 | goto out; | |
5032 | case -NFS4ERR_GRACE: | |
5033 | case -NFS4ERR_DELAY: | |
5034 | nfs4_handle_exception(server, err, &exception); | |
5035 | err = 0; | |
5036 | } | |
202b50dc | 5037 | } while (exception.retry); |
a9ed2e25 | 5038 | out: |
202b50dc | 5039 | return err; |
1da177e4 LT |
5040 | } |
5041 | ||
f062eb6c | 5042 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd CL |
5043 | /** |
5044 | * nfs41_check_expired_locks - possibly free a lock stateid | |
5045 | * | |
5046 | * @state: NFSv4 state for an inode | |
5047 | * | |
5048 | * Returns NFS_OK if recovery for this stateid is now finished. | |
5049 | * Otherwise a negative NFS4ERR value is returned. | |
5050 | */ | |
b01dd1d8 | 5051 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 5052 | { |
eb64cf96 | 5053 | int status, ret = -NFS4ERR_BAD_STATEID; |
b01dd1d8 | 5054 | struct nfs4_lock_state *lsp; |
f062eb6c BS |
5055 | struct nfs_server *server = NFS_SERVER(state->inode); |
5056 | ||
b01dd1d8 | 5057 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
795a88c9 | 5058 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { |
b01dd1d8 BS |
5059 | status = nfs41_test_stateid(server, &lsp->ls_stateid); |
5060 | if (status != NFS_OK) { | |
3e60ffdd CL |
5061 | /* Free the stateid unless the server |
5062 | * informs us the stateid is unrecognized. */ | |
89af2739 CL |
5063 | if (status != -NFS4ERR_BAD_STATEID) |
5064 | nfs41_free_stateid(server, | |
5065 | &lsp->ls_stateid); | |
795a88c9 | 5066 | clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); |
b01dd1d8 BS |
5067 | ret = status; |
5068 | } | |
5069 | } | |
5070 | }; | |
5071 | ||
5072 | return ret; | |
5073 | } | |
5074 | ||
5075 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
5076 | { | |
5077 | int status = NFS_OK; | |
5078 | ||
5079 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
5080 | status = nfs41_check_expired_locks(state); | |
eb64cf96 CL |
5081 | if (status != NFS_OK) |
5082 | status = nfs4_lock_expired(state, request); | |
5083 | return status; | |
f062eb6c BS |
5084 | } |
5085 | #endif | |
5086 | ||
1da177e4 LT |
5087 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
5088 | { | |
9a99af49 | 5089 | struct nfs4_state_owner *sp = state->owner; |
19e03c57 | 5090 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 5091 | unsigned char fl_flags = request->fl_flags; |
9a99af49 | 5092 | unsigned int seq; |
8e469ebd | 5093 | int status = -ENOLCK; |
1da177e4 | 5094 | |
8e469ebd TM |
5095 | if ((fl_flags & FL_POSIX) && |
5096 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
5097 | goto out; | |
6bfc93ef | 5098 | /* Is this a delegated open? */ |
6bfc93ef TM |
5099 | status = nfs4_set_lock_state(state, request); |
5100 | if (status != 0) | |
5101 | goto out; | |
01c3b861 TM |
5102 | request->fl_flags |= FL_ACCESS; |
5103 | status = do_vfs_lock(request->fl_file, request); | |
5104 | if (status < 0) | |
5105 | goto out; | |
19e03c57 | 5106 | down_read(&nfsi->rwsem); |
01c3b861 | 5107 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 5108 | /* Yes: cache locks! */ |
01c3b861 | 5109 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
5110 | request->fl_flags = fl_flags & ~FL_SLEEP; |
5111 | status = do_vfs_lock(request->fl_file, request); | |
5112 | goto out_unlock; | |
01c3b861 | 5113 | } |
9a99af49 TM |
5114 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); |
5115 | up_read(&nfsi->rwsem); | |
afe6c27c | 5116 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 5117 | if (status != 0) |
9a99af49 TM |
5118 | goto out; |
5119 | down_read(&nfsi->rwsem); | |
5120 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) { | |
5121 | status = -NFS4ERR_DELAY; | |
01c3b861 | 5122 | goto out_unlock; |
9a99af49 | 5123 | } |
6bfc93ef | 5124 | /* Note: we always want to sleep here! */ |
01c3b861 | 5125 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 5126 | if (do_vfs_lock(request->fl_file, request) < 0) |
a030889a WAA |
5127 | printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " |
5128 | "manager!\n", __func__); | |
01c3b861 | 5129 | out_unlock: |
19e03c57 | 5130 | up_read(&nfsi->rwsem); |
01c3b861 TM |
5131 | out: |
5132 | request->fl_flags = fl_flags; | |
1da177e4 LT |
5133 | return status; |
5134 | } | |
5135 | ||
5136 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
5137 | { | |
a1d0b5ee TM |
5138 | struct nfs4_exception exception = { |
5139 | .state = state, | |
05ffe24f | 5140 | .inode = state->inode, |
a1d0b5ee | 5141 | }; |
1da177e4 LT |
5142 | int err; |
5143 | ||
5144 | do { | |
965b5d67 TM |
5145 | err = _nfs4_proc_setlk(state, cmd, request); |
5146 | if (err == -NFS4ERR_DENIED) | |
5147 | err = -EAGAIN; | |
1da177e4 | 5148 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 5149 | err, &exception); |
1da177e4 LT |
5150 | } while (exception.retry); |
5151 | return err; | |
5152 | } | |
5153 | ||
5154 | static int | |
5155 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
5156 | { | |
5157 | struct nfs_open_context *ctx; | |
5158 | struct nfs4_state *state; | |
5159 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
5160 | int status; | |
5161 | ||
5162 | /* verify open state */ | |
cd3758e3 | 5163 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
5164 | state = ctx->state; |
5165 | ||
5166 | if (request->fl_start < 0 || request->fl_end < 0) | |
5167 | return -EINVAL; | |
5168 | ||
d953126a TM |
5169 | if (IS_GETLK(cmd)) { |
5170 | if (state != NULL) | |
5171 | return nfs4_proc_getlk(state, F_GETLK, request); | |
5172 | return 0; | |
5173 | } | |
1da177e4 LT |
5174 | |
5175 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
5176 | return -EINVAL; | |
5177 | ||
d953126a TM |
5178 | if (request->fl_type == F_UNLCK) { |
5179 | if (state != NULL) | |
5180 | return nfs4_proc_unlck(state, cmd, request); | |
5181 | return 0; | |
5182 | } | |
1da177e4 | 5183 | |
d953126a TM |
5184 | if (state == NULL) |
5185 | return -ENOLCK; | |
55725513 TM |
5186 | /* |
5187 | * Don't rely on the VFS having checked the file open mode, | |
5188 | * since it won't do this for flock() locks. | |
5189 | */ | |
f44106e2 | 5190 | switch (request->fl_type) { |
55725513 TM |
5191 | case F_RDLCK: |
5192 | if (!(filp->f_mode & FMODE_READ)) | |
5193 | return -EBADF; | |
5194 | break; | |
5195 | case F_WRLCK: | |
5196 | if (!(filp->f_mode & FMODE_WRITE)) | |
5197 | return -EBADF; | |
5198 | } | |
5199 | ||
1da177e4 LT |
5200 | do { |
5201 | status = nfs4_proc_setlk(state, cmd, request); | |
5202 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
5203 | break; | |
5204 | timeout = nfs4_set_lock_task_retry(timeout); | |
5205 | status = -ERESTARTSYS; | |
5206 | if (signalled()) | |
5207 | break; | |
5208 | } while(status < 0); | |
1da177e4 LT |
5209 | return status; |
5210 | } | |
5211 | ||
db4f2e63 | 5212 | int nfs4_lock_delegation_recall(struct file_lock *fl, struct nfs4_state *state, const nfs4_stateid *stateid) |
888e694c TM |
5213 | { |
5214 | struct nfs_server *server = NFS_SERVER(state->inode); | |
888e694c TM |
5215 | int err; |
5216 | ||
5217 | err = nfs4_set_lock_state(state, fl); | |
5218 | if (err != 0) | |
db4f2e63 | 5219 | return err; |
4a706fa0 | 5220 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
db4f2e63 | 5221 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); |
888e694c | 5222 | } |
6b3b5496 | 5223 | |
cf470c3e TM |
5224 | struct nfs_release_lockowner_data { |
5225 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 5226 | struct nfs_server *server; |
cf470c3e TM |
5227 | struct nfs_release_lockowner_args args; |
5228 | }; | |
5229 | ||
d3c7b7cc TM |
5230 | static void nfs4_release_lockowner_release(void *calldata) |
5231 | { | |
cf470c3e | 5232 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 5233 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
5234 | kfree(calldata); |
5235 | } | |
5236 | ||
17280175 | 5237 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
d3c7b7cc TM |
5238 | .rpc_release = nfs4_release_lockowner_release, |
5239 | }; | |
5240 | ||
c8b2d0bf | 5241 | static int nfs4_release_lockowner(struct nfs_server *server, struct nfs4_lock_state *lsp) |
d3c7b7cc | 5242 | { |
cf470c3e | 5243 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
5244 | struct rpc_message msg = { |
5245 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
5246 | }; | |
5247 | ||
5248 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
cf470c3e TM |
5249 | return -EINVAL; |
5250 | data = kmalloc(sizeof(*data), GFP_NOFS); | |
5251 | if (!data) | |
5252 | return -ENOMEM; | |
5253 | data->lsp = lsp; | |
5ae67c4f | 5254 | data->server = server; |
cf470c3e TM |
5255 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
5256 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
5257 | data->args.lock_owner.s_dev = server->s_dev; | |
5258 | msg.rpc_argp = &data->args; | |
5259 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); | |
5260 | return 0; | |
d3c7b7cc TM |
5261 | } |
5262 | ||
aa1870af BF |
5263 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
5264 | ||
64c2ce8b AK |
5265 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
5266 | const void *buf, size_t buflen, | |
5267 | int flags, int type) | |
6b3b5496 | 5268 | { |
64c2ce8b AK |
5269 | if (strcmp(key, "") != 0) |
5270 | return -EINVAL; | |
4b580ee3 | 5271 | |
64c2ce8b | 5272 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5273 | } |
5274 | ||
64c2ce8b AK |
5275 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
5276 | void *buf, size_t buflen, int type) | |
6b3b5496 | 5277 | { |
64c2ce8b AK |
5278 | if (strcmp(key, "") != 0) |
5279 | return -EINVAL; | |
aa1870af | 5280 | |
64c2ce8b | 5281 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5282 | } |
5283 | ||
64c2ce8b AK |
5284 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
5285 | size_t list_len, const char *name, | |
5286 | size_t name_len, int type) | |
6b3b5496 | 5287 | { |
64c2ce8b | 5288 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 5289 | |
096455a2 BF |
5290 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
5291 | return 0; | |
64c2ce8b AK |
5292 | |
5293 | if (list && len <= list_len) | |
5294 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 5295 | return len; |
6b3b5496 BF |
5296 | } |
5297 | ||
533eb461 AA |
5298 | /* |
5299 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
5300 | */ | |
69aaaae1 TM |
5301 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
5302 | { | |
533eb461 AA |
5303 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
5304 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
5305 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 5306 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
5307 | return; |
5308 | ||
5309 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 5310 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
5311 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
5312 | fattr->nlink = 2; | |
5313 | } | |
5314 | ||
f05d147f BS |
5315 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5316 | const struct qstr *name, | |
5317 | struct nfs4_fs_locations *fs_locations, | |
5318 | struct page *page) | |
683b57b4 TM |
5319 | { |
5320 | struct nfs_server *server = NFS_SERVER(dir); | |
5321 | u32 bitmask[2] = { | |
361e624f | 5322 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
5323 | }; |
5324 | struct nfs4_fs_locations_arg args = { | |
5325 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 5326 | .name = name, |
683b57b4 TM |
5327 | .page = page, |
5328 | .bitmask = bitmask, | |
5329 | }; | |
22958463 BH |
5330 | struct nfs4_fs_locations_res res = { |
5331 | .fs_locations = fs_locations, | |
5332 | }; | |
683b57b4 TM |
5333 | struct rpc_message msg = { |
5334 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
5335 | .rpc_argp = &args, | |
22958463 | 5336 | .rpc_resp = &res, |
683b57b4 TM |
5337 | }; |
5338 | int status; | |
5339 | ||
3110ff80 | 5340 | dprintk("%s: start\n", __func__); |
533eb461 AA |
5341 | |
5342 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
5343 | * is not supported */ | |
5344 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
5345 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
5346 | else | |
5347 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
5348 | ||
c228fd3a | 5349 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 5350 | fs_locations->server = server; |
830b8e33 | 5351 | fs_locations->nlocations = 0; |
f05d147f | 5352 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 5353 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
5354 | return status; |
5355 | } | |
5356 | ||
f05d147f BS |
5357 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5358 | const struct qstr *name, | |
5359 | struct nfs4_fs_locations *fs_locations, | |
5360 | struct page *page) | |
db0a9593 BS |
5361 | { |
5362 | struct nfs4_exception exception = { }; | |
5363 | int err; | |
5364 | do { | |
5365 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
f05d147f | 5366 | _nfs4_proc_fs_locations(client, dir, name, fs_locations, page), |
db0a9593 BS |
5367 | &exception); |
5368 | } while (exception.retry); | |
5369 | return err; | |
5370 | } | |
5371 | ||
5a5ea0d4 BS |
5372 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) |
5373 | { | |
5374 | int status; | |
5375 | struct nfs4_secinfo_arg args = { | |
5376 | .dir_fh = NFS_FH(dir), | |
5377 | .name = name, | |
5378 | }; | |
5379 | struct nfs4_secinfo_res res = { | |
5380 | .flavors = flavors, | |
5381 | }; | |
5382 | struct rpc_message msg = { | |
5383 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
5384 | .rpc_argp = &args, | |
5385 | .rpc_resp = &res, | |
5386 | }; | |
5387 | ||
5388 | dprintk("NFS call secinfo %s\n", name->name); | |
5389 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); | |
5390 | dprintk("NFS reply secinfo: %d\n", status); | |
5391 | return status; | |
5392 | } | |
5393 | ||
72de53ec BS |
5394 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
5395 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
5396 | { |
5397 | struct nfs4_exception exception = { }; | |
5398 | int err; | |
5399 | do { | |
5400 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
5401 | _nfs4_proc_secinfo(dir, name, flavors), | |
5402 | &exception); | |
5403 | } while (exception.retry); | |
5404 | return err; | |
5405 | } | |
5406 | ||
557134a3 | 5407 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
5408 | /* |
5409 | * Check the exchange flags returned by the server for invalid flags, having | |
5410 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
5411 | * DS flags set. | |
5412 | */ | |
5413 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
5414 | { | |
5415 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
5416 | goto out_inval; | |
5417 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
5418 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
5419 | goto out_inval; | |
5420 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
5421 | goto out_inval; | |
5422 | return NFS_OK; | |
5423 | out_inval: | |
5424 | return -NFS4ERR_INVAL; | |
5425 | } | |
5426 | ||
78fe0f41 | 5427 | static bool |
79d4e1f0 CL |
5428 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
5429 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
5430 | { |
5431 | if (a->server_scope_sz == b->server_scope_sz && | |
5432 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
5433 | return true; | |
5434 | ||
5435 | return false; | |
5436 | } | |
5437 | ||
7c44f1ae WAA |
5438 | /* |
5439 | * nfs4_proc_bind_conn_to_session() | |
5440 | * | |
5441 | * The 4.1 client currently uses the same TCP connection for the | |
5442 | * fore and backchannel. | |
5443 | */ | |
2cf047c9 | 5444 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred) |
7c44f1ae WAA |
5445 | { |
5446 | int status; | |
5447 | struct nfs41_bind_conn_to_session_res res; | |
5448 | struct rpc_message msg = { | |
5449 | .rpc_proc = | |
5450 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
5451 | .rpc_argp = clp, | |
5452 | .rpc_resp = &res, | |
2cf047c9 | 5453 | .rpc_cred = cred, |
7c44f1ae WAA |
5454 | }; |
5455 | ||
5456 | dprintk("--> %s\n", __func__); | |
7c44f1ae WAA |
5457 | |
5458 | res.session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); | |
5459 | if (unlikely(res.session == NULL)) { | |
5460 | status = -ENOMEM; | |
5461 | goto out; | |
5462 | } | |
5463 | ||
5464 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5465 | if (status == 0) { | |
5466 | if (memcmp(res.session->sess_id.data, | |
5467 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { | |
5468 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
5469 | status = -EIO; | |
5470 | goto out_session; | |
5471 | } | |
5472 | if (res.dir != NFS4_CDFS4_BOTH) { | |
5473 | dprintk("NFS: %s: Unexpected direction from server\n", | |
5474 | __func__); | |
5475 | status = -EIO; | |
5476 | goto out_session; | |
5477 | } | |
5478 | if (res.use_conn_in_rdma_mode) { | |
5479 | dprintk("NFS: %s: Server returned RDMA mode = true\n", | |
5480 | __func__); | |
5481 | status = -EIO; | |
5482 | goto out_session; | |
5483 | } | |
5484 | } | |
5485 | out_session: | |
5486 | kfree(res.session); | |
5487 | out: | |
5488 | dprintk("<-- %s status= %d\n", __func__, status); | |
5489 | return status; | |
5490 | } | |
5491 | ||
99fe60d0 BH |
5492 | /* |
5493 | * nfs4_proc_exchange_id() | |
5494 | * | |
6bbb4ae8 CL |
5495 | * Returns zero, a negative errno, or a negative NFS4ERR status code. |
5496 | * | |
99fe60d0 BH |
5497 | * Since the clientid has expired, all compounds using sessions |
5498 | * associated with the stale clientid will be returning | |
5499 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
5500 | * be in some phase of session reset. | |
5501 | */ | |
4d643d1d | 5502 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
5503 | { |
5504 | nfs4_verifier verifier; | |
5505 | struct nfs41_exchange_id_args args = { | |
cd93710e | 5506 | .verifier = &verifier, |
99fe60d0 | 5507 | .client = clp, |
357f54d6 | 5508 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, |
99fe60d0 BH |
5509 | }; |
5510 | struct nfs41_exchange_id_res res = { | |
32b01310 | 5511 | 0 |
99fe60d0 BH |
5512 | }; |
5513 | int status; | |
5514 | struct rpc_message msg = { | |
5515 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
5516 | .rpc_argp = &args, | |
5517 | .rpc_resp = &res, | |
5518 | .rpc_cred = cred, | |
5519 | }; | |
99fe60d0 | 5520 | |
f092075d | 5521 | nfs4_init_boot_verifier(clp, &verifier); |
e984a55a CL |
5522 | args.id_len = nfs4_init_uniform_client_string(clp, args.id, |
5523 | sizeof(args.id)); | |
6bbb4ae8 CL |
5524 | dprintk("NFS call exchange_id auth=%s, '%.*s'\n", |
5525 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
5526 | args.id_len, args.id); | |
99fe60d0 | 5527 | |
acdeb69d | 5528 | res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
bbafffd2 | 5529 | GFP_NOFS); |
acdeb69d | 5530 | if (unlikely(res.server_owner == NULL)) { |
abe9a6d5 WAA |
5531 | status = -ENOMEM; |
5532 | goto out; | |
5533 | } | |
78fe0f41 | 5534 | |
79d4e1f0 | 5535 | res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 5536 | GFP_NOFS); |
177313f1 | 5537 | if (unlikely(res.server_scope == NULL)) { |
abe9a6d5 | 5538 | status = -ENOMEM; |
acdeb69d | 5539 | goto out_server_owner; |
abe9a6d5 | 5540 | } |
78fe0f41 | 5541 | |
bbafffd2 | 5542 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
177313f1 | 5543 | if (unlikely(res.impl_id == NULL)) { |
7d2ed9ac WAA |
5544 | status = -ENOMEM; |
5545 | goto out_server_scope; | |
5546 | } | |
5547 | ||
1bd714f2 | 5548 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
177313f1 | 5549 | if (status == 0) |
32b01310 | 5550 | status = nfs4_check_cl_exchange_flags(res.flags); |
78fe0f41 | 5551 | |
acdeb69d | 5552 | if (status == 0) { |
32b01310 TM |
5553 | clp->cl_clientid = res.clientid; |
5554 | clp->cl_exchange_flags = (res.flags & ~EXCHGID4_FLAG_CONFIRMED_R); | |
5555 | if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R)) | |
5556 | clp->cl_seqid = res.seqid; | |
5557 | ||
acdeb69d CL |
5558 | kfree(clp->cl_serverowner); |
5559 | clp->cl_serverowner = res.server_owner; | |
5560 | res.server_owner = NULL; | |
78fe0f41 | 5561 | |
7d2ed9ac | 5562 | /* use the most recent implementation id */ |
59155546 CL |
5563 | kfree(clp->cl_implid); |
5564 | clp->cl_implid = res.impl_id; | |
7d2ed9ac | 5565 | |
177313f1 | 5566 | if (clp->cl_serverscope != NULL && |
79d4e1f0 | 5567 | !nfs41_same_server_scope(clp->cl_serverscope, |
78fe0f41 WAA |
5568 | res.server_scope)) { |
5569 | dprintk("%s: server_scope mismatch detected\n", | |
5570 | __func__); | |
5571 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
79d4e1f0 CL |
5572 | kfree(clp->cl_serverscope); |
5573 | clp->cl_serverscope = NULL; | |
78fe0f41 WAA |
5574 | } |
5575 | ||
177313f1 | 5576 | if (clp->cl_serverscope == NULL) { |
79d4e1f0 | 5577 | clp->cl_serverscope = res.server_scope; |
abe9a6d5 WAA |
5578 | goto out; |
5579 | } | |
32b01310 TM |
5580 | } else |
5581 | kfree(res.impl_id); | |
7d2ed9ac | 5582 | |
acdeb69d CL |
5583 | out_server_owner: |
5584 | kfree(res.server_owner); | |
7d2ed9ac | 5585 | out_server_scope: |
abe9a6d5 WAA |
5586 | kfree(res.server_scope); |
5587 | out: | |
177313f1 | 5588 | if (clp->cl_implid != NULL) |
6bbb4ae8 | 5589 | dprintk("NFS reply exchange_id: Server Implementation ID: " |
7d2ed9ac | 5590 | "domain: %s, name: %s, date: %llu,%u\n", |
6bbb4ae8 | 5591 | clp->cl_implid->domain, clp->cl_implid->name, |
59155546 CL |
5592 | clp->cl_implid->date.seconds, |
5593 | clp->cl_implid->date.nseconds); | |
6bbb4ae8 | 5594 | dprintk("NFS reply exchange_id: %d\n", status); |
99fe60d0 BH |
5595 | return status; |
5596 | } | |
5597 | ||
66245539 TM |
5598 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
5599 | struct rpc_cred *cred) | |
5600 | { | |
5601 | struct rpc_message msg = { | |
5602 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
5603 | .rpc_argp = clp, | |
5604 | .rpc_cred = cred, | |
5605 | }; | |
5606 | int status; | |
5607 | ||
5608 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5609 | if (status) | |
02c67525 | 5610 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
5611 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
5612 | return status; | |
5613 | } | |
5614 | ||
5615 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
5616 | struct rpc_cred *cred) | |
5617 | { | |
5618 | unsigned int loop; | |
5619 | int ret; | |
5620 | ||
5621 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
5622 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
5623 | switch (ret) { | |
5624 | case -NFS4ERR_DELAY: | |
5625 | case -NFS4ERR_CLIENTID_BUSY: | |
5626 | ssleep(1); | |
5627 | break; | |
5628 | default: | |
5629 | return ret; | |
5630 | } | |
5631 | } | |
5632 | return 0; | |
5633 | } | |
5634 | ||
5635 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
5636 | { | |
5637 | struct rpc_cred *cred; | |
5638 | int ret = 0; | |
5639 | ||
5640 | if (clp->cl_mvops->minor_version < 1) | |
5641 | goto out; | |
5642 | if (clp->cl_exchange_flags == 0) | |
5643 | goto out; | |
05f4c350 CL |
5644 | if (clp->cl_preserve_clid) |
5645 | goto out; | |
66245539 TM |
5646 | cred = nfs4_get_exchange_id_cred(clp); |
5647 | ret = nfs4_proc_destroy_clientid(clp, cred); | |
5648 | if (cred) | |
5649 | put_rpccred(cred); | |
5650 | switch (ret) { | |
5651 | case 0: | |
5652 | case -NFS4ERR_STALE_CLIENTID: | |
5653 | clp->cl_exchange_flags = 0; | |
5654 | } | |
5655 | out: | |
5656 | return ret; | |
5657 | } | |
5658 | ||
2050f0cc AA |
5659 | struct nfs4_get_lease_time_data { |
5660 | struct nfs4_get_lease_time_args *args; | |
5661 | struct nfs4_get_lease_time_res *res; | |
5662 | struct nfs_client *clp; | |
5663 | }; | |
5664 | ||
5665 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
5666 | void *calldata) | |
5667 | { | |
2050f0cc AA |
5668 | struct nfs4_get_lease_time_data *data = |
5669 | (struct nfs4_get_lease_time_data *)calldata; | |
5670 | ||
5671 | dprintk("--> %s\n", __func__); | |
5672 | /* just setup sequence, do not trigger session recovery | |
5673 | since we're invoked within one */ | |
d9afbd1b TM |
5674 | nfs41_setup_sequence(data->clp->cl_session, |
5675 | &data->args->la_seq_args, | |
5676 | &data->res->lr_seq_res, | |
5677 | task); | |
2050f0cc AA |
5678 | dprintk("<-- %s\n", __func__); |
5679 | } | |
5680 | ||
5681 | /* | |
5682 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
5683 | * from sequence operation or clientid errors. | |
5684 | */ | |
5685 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
5686 | { | |
5687 | struct nfs4_get_lease_time_data *data = | |
5688 | (struct nfs4_get_lease_time_data *)calldata; | |
5689 | ||
5690 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5691 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
5692 | return; | |
2050f0cc AA |
5693 | switch (task->tk_status) { |
5694 | case -NFS4ERR_DELAY: | |
5695 | case -NFS4ERR_GRACE: | |
5696 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
5697 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
5698 | task->tk_status = 0; | |
a8a4ae3a AA |
5699 | /* fall through */ |
5700 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 5701 | rpc_restart_call_prepare(task); |
2050f0cc AA |
5702 | return; |
5703 | } | |
2050f0cc AA |
5704 | dprintk("<-- %s\n", __func__); |
5705 | } | |
5706 | ||
17280175 | 5707 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
5708 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
5709 | .rpc_call_done = nfs4_get_lease_time_done, | |
5710 | }; | |
5711 | ||
5712 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
5713 | { | |
5714 | struct rpc_task *task; | |
5715 | struct nfs4_get_lease_time_args args; | |
5716 | struct nfs4_get_lease_time_res res = { | |
5717 | .lr_fsinfo = fsinfo, | |
5718 | }; | |
5719 | struct nfs4_get_lease_time_data data = { | |
5720 | .args = &args, | |
5721 | .res = &res, | |
5722 | .clp = clp, | |
5723 | }; | |
5724 | struct rpc_message msg = { | |
5725 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
5726 | .rpc_argp = &args, | |
5727 | .rpc_resp = &res, | |
5728 | }; | |
5729 | struct rpc_task_setup task_setup = { | |
5730 | .rpc_client = clp->cl_rpcclient, | |
5731 | .rpc_message = &msg, | |
5732 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
5733 | .callback_data = &data, |
5734 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
5735 | }; |
5736 | int status; | |
5737 | ||
9d12b216 | 5738 | nfs41_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
8fe72bac | 5739 | nfs4_set_sequence_privileged(&args.la_seq_args); |
2050f0cc AA |
5740 | dprintk("--> %s\n", __func__); |
5741 | task = rpc_run_task(&task_setup); | |
5742 | ||
5743 | if (IS_ERR(task)) | |
5744 | status = PTR_ERR(task); | |
5745 | else { | |
5746 | status = task->tk_status; | |
5747 | rpc_put_task(task); | |
5748 | } | |
5749 | dprintk("<-- %s return %d\n", __func__, status); | |
5750 | ||
5751 | return status; | |
5752 | } | |
5753 | ||
fc931582 AA |
5754 | /* |
5755 | * Initialize the values to be used by the client in CREATE_SESSION | |
5756 | * If nfs4_init_session set the fore channel request and response sizes, | |
5757 | * use them. | |
5758 | * | |
5759 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
5760 | * always set csa_cachethis to FALSE because the current implementation | |
5761 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
5762 | */ | |
5763 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
5764 | { | |
5765 | struct nfs4_session *session = args->client->cl_session; | |
ae72ae67 TM |
5766 | unsigned int mxrqst_sz = session->fc_target_max_rqst_sz, |
5767 | mxresp_sz = session->fc_target_max_resp_sz; | |
fc931582 AA |
5768 | |
5769 | if (mxrqst_sz == 0) | |
5770 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
5771 | if (mxresp_sz == 0) | |
5772 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
5773 | /* Fore channel attributes */ | |
fc931582 AA |
5774 | args->fc_attrs.max_rqst_sz = mxrqst_sz; |
5775 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 | 5776 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 5777 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
5778 | |
5779 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 5780 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
5781 | __func__, |
5782 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 5783 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
5784 | |
5785 | /* Back channel attributes */ | |
fc931582 AA |
5786 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
5787 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
5788 | args->bc_attrs.max_resp_sz_cached = 0; | |
5789 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
5790 | args->bc_attrs.max_reqs = 1; | |
5791 | ||
5792 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
5793 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
5794 | __func__, | |
5795 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
5796 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
5797 | args->bc_attrs.max_reqs); | |
5798 | } | |
5799 | ||
43c2e885 | 5800 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 5801 | { |
43c2e885 BF |
5802 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
5803 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
5804 | ||
43c2e885 BF |
5805 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
5806 | return -EINVAL; | |
5807 | /* | |
5808 | * Our requested max_ops is the minimum we need; we're not | |
5809 | * prepared to break up compounds into smaller pieces than that. | |
5810 | * So, no point even trying to continue if the server won't | |
5811 | * cooperate: | |
5812 | */ | |
5813 | if (rcvd->max_ops < sent->max_ops) | |
5814 | return -EINVAL; | |
5815 | if (rcvd->max_reqs == 0) | |
5816 | return -EINVAL; | |
b4b9a0c1 VG |
5817 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
5818 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 5819 | return 0; |
8d35301d AA |
5820 | } |
5821 | ||
43c2e885 BF |
5822 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
5823 | { | |
5824 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
5825 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 5826 | |
43c2e885 BF |
5827 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
5828 | return -EINVAL; | |
5829 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
5830 | return -EINVAL; | |
5831 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
5832 | return -EINVAL; | |
5833 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 5834 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 5835 | return -EINVAL; |
b4b9a0c1 | 5836 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 BF |
5837 | return -EINVAL; |
5838 | return 0; | |
5839 | } | |
8d35301d | 5840 | |
8d35301d AA |
5841 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
5842 | struct nfs4_session *session) | |
5843 | { | |
43c2e885 | 5844 | int ret; |
8d35301d | 5845 | |
43c2e885 BF |
5846 | ret = nfs4_verify_fore_channel_attrs(args, session); |
5847 | if (ret) | |
5848 | return ret; | |
5849 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
5850 | } |
5851 | ||
848f5bda TM |
5852 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
5853 | struct rpc_cred *cred) | |
fc931582 AA |
5854 | { |
5855 | struct nfs4_session *session = clp->cl_session; | |
5856 | struct nfs41_create_session_args args = { | |
5857 | .client = clp, | |
5858 | .cb_program = NFS4_CALLBACK, | |
5859 | }; | |
5860 | struct nfs41_create_session_res res = { | |
5861 | .client = clp, | |
5862 | }; | |
5863 | struct rpc_message msg = { | |
5864 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
5865 | .rpc_argp = &args, | |
5866 | .rpc_resp = &res, | |
848f5bda | 5867 | .rpc_cred = cred, |
fc931582 AA |
5868 | }; |
5869 | int status; | |
5870 | ||
5871 | nfs4_init_channel_attrs(&args); | |
0f91421e | 5872 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 5873 | |
1bd714f2 | 5874 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
fc931582 | 5875 | |
43095d39 | 5876 | if (!status) { |
8d35301d AA |
5877 | /* Verify the session's negotiated channel_attrs values */ |
5878 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
5879 | /* Increment the clientid slot sequence id */ |
5880 | clp->cl_seqid++; | |
5881 | } | |
5882 | ||
5883 | return status; | |
5884 | } | |
5885 | ||
5886 | /* | |
5887 | * Issues a CREATE_SESSION operation to the server. | |
5888 | * It is the responsibility of the caller to verify the session is | |
5889 | * expired before calling this routine. | |
5890 | */ | |
848f5bda | 5891 | int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred) |
fc931582 AA |
5892 | { |
5893 | int status; | |
5894 | unsigned *ptr; | |
fc931582 AA |
5895 | struct nfs4_session *session = clp->cl_session; |
5896 | ||
5897 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
5898 | ||
848f5bda | 5899 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
5900 | if (status) |
5901 | goto out; | |
5902 | ||
aacd5537 AA |
5903 | /* Init or reset the session slot tables */ |
5904 | status = nfs4_setup_session_slot_tables(session); | |
5905 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
5906 | if (status) |
5907 | goto out; | |
5908 | ||
5909 | ptr = (unsigned *)&session->sess_id.data[0]; | |
5910 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
5911 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
5912 | out: |
5913 | dprintk("<-- %s\n", __func__); | |
5914 | return status; | |
5915 | } | |
5916 | ||
0f3e66c6 AA |
5917 | /* |
5918 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
5919 | * The caller must serialize access to this routine. | |
5920 | */ | |
848f5bda TM |
5921 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
5922 | struct rpc_cred *cred) | |
0f3e66c6 | 5923 | { |
848f5bda TM |
5924 | struct rpc_message msg = { |
5925 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
5926 | .rpc_argp = session, | |
5927 | .rpc_cred = cred, | |
5928 | }; | |
0f3e66c6 | 5929 | int status = 0; |
0f3e66c6 AA |
5930 | |
5931 | dprintk("--> nfs4_proc_destroy_session\n"); | |
5932 | ||
5933 | /* session is still being setup */ | |
5934 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
5935 | return status; | |
5936 | ||
1bd714f2 | 5937 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
0f3e66c6 AA |
5938 | |
5939 | if (status) | |
08106ac7 | 5940 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
5941 | "Session has been destroyed regardless...\n", status); |
5942 | ||
5943 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
5944 | return status; | |
5945 | } | |
5946 | ||
fc01cea9 AA |
5947 | /* |
5948 | * Renew the cl_session lease. | |
5949 | */ | |
d5f8d3fe TM |
5950 | struct nfs4_sequence_data { |
5951 | struct nfs_client *clp; | |
5952 | struct nfs4_sequence_args args; | |
5953 | struct nfs4_sequence_res res; | |
5954 | }; | |
5955 | ||
dc96aef9 AB |
5956 | static void nfs41_sequence_release(void *data) |
5957 | { | |
d5f8d3fe TM |
5958 | struct nfs4_sequence_data *calldata = data; |
5959 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 5960 | |
7135840f AB |
5961 | if (atomic_read(&clp->cl_count) > 1) |
5962 | nfs4_schedule_state_renewal(clp); | |
5963 | nfs_put_client(clp); | |
d5f8d3fe | 5964 | kfree(calldata); |
dc96aef9 AB |
5965 | } |
5966 | ||
aa5190d0 TM |
5967 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5968 | { | |
5969 | switch(task->tk_status) { | |
5970 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5971 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5972 | return -EAGAIN; | |
5973 | default: | |
0400a6b0 | 5974 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5975 | } |
5976 | return 0; | |
5977 | } | |
5978 | ||
dc96aef9 | 5979 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 5980 | { |
d5f8d3fe TM |
5981 | struct nfs4_sequence_data *calldata = data; |
5982 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 5983 | |
14516c3a TM |
5984 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
5985 | return; | |
fc01cea9 AA |
5986 | |
5987 | if (task->tk_status < 0) { | |
5988 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
5989 | if (atomic_read(&clp->cl_count) == 1) |
5990 | goto out; | |
fc01cea9 | 5991 | |
aa5190d0 TM |
5992 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
5993 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
5994 | return; |
5995 | } | |
5996 | } | |
fc01cea9 | 5997 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 5998 | out: |
fc01cea9 AA |
5999 | dprintk("<-- %s\n", __func__); |
6000 | } | |
6001 | ||
6002 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
6003 | { | |
d5f8d3fe TM |
6004 | struct nfs4_sequence_data *calldata = data; |
6005 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
6006 | struct nfs4_sequence_args *args; |
6007 | struct nfs4_sequence_res *res; | |
6008 | ||
fc01cea9 AA |
6009 | args = task->tk_msg.rpc_argp; |
6010 | res = task->tk_msg.rpc_resp; | |
6011 | ||
d9afbd1b | 6012 | nfs41_setup_sequence(clp->cl_session, args, res, task); |
fc01cea9 AA |
6013 | } |
6014 | ||
6015 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
6016 | .rpc_call_done = nfs41_sequence_call_done, | |
6017 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 6018 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
6019 | }; |
6020 | ||
8fe72bac TM |
6021 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, |
6022 | struct rpc_cred *cred, | |
6023 | bool is_privileged) | |
fc01cea9 | 6024 | { |
d5f8d3fe | 6025 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
6026 | struct rpc_message msg = { |
6027 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
6028 | .rpc_cred = cred, | |
6029 | }; | |
71ac6da9 TM |
6030 | struct rpc_task_setup task_setup_data = { |
6031 | .rpc_client = clp->cl_rpcclient, | |
6032 | .rpc_message = &msg, | |
8fe72bac | 6033 | .callback_ops = &nfs41_sequence_ops, |
bc7a05ca | 6034 | .flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT, |
71ac6da9 | 6035 | }; |
fc01cea9 | 6036 | |
7135840f | 6037 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 6038 | return ERR_PTR(-EIO); |
dfb4f309 | 6039 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 6040 | if (calldata == NULL) { |
7135840f | 6041 | nfs_put_client(clp); |
71ac6da9 | 6042 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 6043 | } |
9d12b216 | 6044 | nfs41_init_sequence(&calldata->args, &calldata->res, 0); |
8fe72bac TM |
6045 | if (is_privileged) |
6046 | nfs4_set_sequence_privileged(&calldata->args); | |
d5f8d3fe TM |
6047 | msg.rpc_argp = &calldata->args; |
6048 | msg.rpc_resp = &calldata->res; | |
6049 | calldata->clp = clp; | |
71ac6da9 | 6050 | task_setup_data.callback_data = calldata; |
fc01cea9 | 6051 | |
71ac6da9 TM |
6052 | return rpc_run_task(&task_setup_data); |
6053 | } | |
6054 | ||
2f60ea6b | 6055 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
6056 | { |
6057 | struct rpc_task *task; | |
6058 | int ret = 0; | |
6059 | ||
2f60ea6b TM |
6060 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
6061 | return 0; | |
8fe72bac | 6062 | task = _nfs41_proc_sequence(clp, cred, false); |
71ac6da9 TM |
6063 | if (IS_ERR(task)) |
6064 | ret = PTR_ERR(task); | |
6065 | else | |
bf294b41 | 6066 | rpc_put_task_async(task); |
71ac6da9 TM |
6067 | dprintk("<-- %s status=%d\n", __func__, ret); |
6068 | return ret; | |
6069 | } | |
6070 | ||
6071 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
6072 | { | |
6073 | struct rpc_task *task; | |
6074 | int ret; | |
6075 | ||
8fe72bac | 6076 | task = _nfs41_proc_sequence(clp, cred, true); |
71ac6da9 TM |
6077 | if (IS_ERR(task)) { |
6078 | ret = PTR_ERR(task); | |
6079 | goto out; | |
6080 | } | |
6081 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
6082 | if (!ret) { |
6083 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
6084 | ||
6085 | if (task->tk_status == 0) | |
6086 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 6087 | ret = task->tk_status; |
b4410c2f | 6088 | } |
71ac6da9 TM |
6089 | rpc_put_task(task); |
6090 | out: | |
6091 | dprintk("<-- %s status=%d\n", __func__, ret); | |
6092 | return ret; | |
fc01cea9 AA |
6093 | } |
6094 | ||
fce5c838 RL |
6095 | struct nfs4_reclaim_complete_data { |
6096 | struct nfs_client *clp; | |
6097 | struct nfs41_reclaim_complete_args arg; | |
6098 | struct nfs41_reclaim_complete_res res; | |
6099 | }; | |
6100 | ||
6101 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
6102 | { | |
6103 | struct nfs4_reclaim_complete_data *calldata = data; | |
6104 | ||
d9afbd1b TM |
6105 | nfs41_setup_sequence(calldata->clp->cl_session, |
6106 | &calldata->arg.seq_args, | |
6107 | &calldata->res.seq_res, | |
6108 | task); | |
fce5c838 RL |
6109 | } |
6110 | ||
aa5190d0 TM |
6111 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
6112 | { | |
6113 | switch(task->tk_status) { | |
6114 | case 0: | |
6115 | case -NFS4ERR_COMPLETE_ALREADY: | |
6116 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
6117 | break; | |
6118 | case -NFS4ERR_DELAY: | |
aa5190d0 | 6119 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
6120 | /* fall through */ |
6121 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
6122 | return -EAGAIN; |
6123 | default: | |
0400a6b0 | 6124 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
6125 | } |
6126 | return 0; | |
6127 | } | |
6128 | ||
fce5c838 RL |
6129 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
6130 | { | |
6131 | struct nfs4_reclaim_complete_data *calldata = data; | |
6132 | struct nfs_client *clp = calldata->clp; | |
6133 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
6134 | ||
6135 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
6136 | if (!nfs41_sequence_done(task, res)) |
6137 | return; | |
fce5c838 | 6138 | |
aa5190d0 TM |
6139 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
6140 | rpc_restart_call_prepare(task); | |
6141 | return; | |
6142 | } | |
fce5c838 RL |
6143 | dprintk("<-- %s\n", __func__); |
6144 | } | |
6145 | ||
6146 | static void nfs4_free_reclaim_complete_data(void *data) | |
6147 | { | |
6148 | struct nfs4_reclaim_complete_data *calldata = data; | |
6149 | ||
6150 | kfree(calldata); | |
6151 | } | |
6152 | ||
6153 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
6154 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
6155 | .rpc_call_done = nfs4_reclaim_complete_done, | |
6156 | .rpc_release = nfs4_free_reclaim_complete_data, | |
6157 | }; | |
6158 | ||
6159 | /* | |
6160 | * Issue a global reclaim complete. | |
6161 | */ | |
6162 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
6163 | { | |
6164 | struct nfs4_reclaim_complete_data *calldata; | |
6165 | struct rpc_task *task; | |
6166 | struct rpc_message msg = { | |
6167 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
6168 | }; | |
6169 | struct rpc_task_setup task_setup_data = { | |
6170 | .rpc_client = clp->cl_rpcclient, | |
6171 | .rpc_message = &msg, | |
6172 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
6173 | .flags = RPC_TASK_ASYNC, | |
6174 | }; | |
6175 | int status = -ENOMEM; | |
6176 | ||
6177 | dprintk("--> %s\n", __func__); | |
8535b2be | 6178 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
6179 | if (calldata == NULL) |
6180 | goto out; | |
6181 | calldata->clp = clp; | |
6182 | calldata->arg.one_fs = 0; | |
fce5c838 | 6183 | |
9d12b216 | 6184 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
8fe72bac | 6185 | nfs4_set_sequence_privileged(&calldata->arg.seq_args); |
fce5c838 RL |
6186 | msg.rpc_argp = &calldata->arg; |
6187 | msg.rpc_resp = &calldata->res; | |
6188 | task_setup_data.callback_data = calldata; | |
6189 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 6190 | if (IS_ERR(task)) { |
fce5c838 | 6191 | status = PTR_ERR(task); |
acf82b85 DC |
6192 | goto out; |
6193 | } | |
c34c32ea AA |
6194 | status = nfs4_wait_for_completion_rpc_task(task); |
6195 | if (status == 0) | |
6196 | status = task->tk_status; | |
fce5c838 | 6197 | rpc_put_task(task); |
acf82b85 | 6198 | return 0; |
fce5c838 RL |
6199 | out: |
6200 | dprintk("<-- %s status=%d\n", __func__, status); | |
6201 | return status; | |
6202 | } | |
b1f69b75 AA |
6203 | |
6204 | static void | |
6205 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
6206 | { | |
6207 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 6208 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
6ba7db34 | 6209 | struct nfs4_session *session = nfs4_get_session(server); |
b1f69b75 AA |
6210 | |
6211 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
6212 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
6213 | * right now covering the LAYOUTGET we are about to send. | |
6214 | * However, that is not so catastrophic, and there seems | |
6215 | * to be no way to prevent it completely. | |
6216 | */ | |
6ba7db34 | 6217 | if (nfs41_setup_sequence(session, &lgp->args.seq_args, |
9d12b216 | 6218 | &lgp->res.seq_res, task)) |
b1f69b75 | 6219 | return; |
cf7d63f1 FI |
6220 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
6221 | NFS_I(lgp->args.inode)->layout, | |
6222 | lgp->args.ctx->state)) { | |
6223 | rpc_exit(task, NFS4_OK); | |
cf7d63f1 | 6224 | } |
b1f69b75 AA |
6225 | } |
6226 | ||
6227 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
6228 | { | |
6229 | struct nfs4_layoutget *lgp = calldata; | |
ee314c2a TM |
6230 | struct inode *inode = lgp->args.inode; |
6231 | struct nfs_server *server = NFS_SERVER(inode); | |
6232 | struct pnfs_layout_hdr *lo; | |
6233 | struct nfs4_state *state = NULL; | |
30005121 | 6234 | unsigned long timeo, giveup; |
b1f69b75 AA |
6235 | |
6236 | dprintk("--> %s\n", __func__); | |
6237 | ||
6ba7db34 | 6238 | if (!nfs41_sequence_done(task, &lgp->res.seq_res)) |
ee314c2a | 6239 | goto out; |
b1f69b75 AA |
6240 | |
6241 | switch (task->tk_status) { | |
6242 | case 0: | |
ee314c2a | 6243 | goto out; |
b1f69b75 AA |
6244 | case -NFS4ERR_LAYOUTTRYLATER: |
6245 | case -NFS4ERR_RECALLCONFLICT: | |
30005121 WAA |
6246 | timeo = rpc_get_timeout(task->tk_client); |
6247 | giveup = lgp->args.timestamp + timeo; | |
6248 | if (time_after(giveup, jiffies)) | |
6249 | task->tk_status = -NFS4ERR_DELAY; | |
ee314c2a TM |
6250 | break; |
6251 | case -NFS4ERR_EXPIRED: | |
6252 | case -NFS4ERR_BAD_STATEID: | |
6253 | spin_lock(&inode->i_lock); | |
6254 | lo = NFS_I(inode)->layout; | |
6255 | if (!lo || list_empty(&lo->plh_segs)) { | |
6256 | spin_unlock(&inode->i_lock); | |
6257 | /* If the open stateid was bad, then recover it. */ | |
6258 | state = lgp->args.ctx->state; | |
6259 | } else { | |
6260 | LIST_HEAD(head); | |
6261 | ||
6262 | pnfs_mark_matching_lsegs_invalid(lo, &head, NULL); | |
6263 | spin_unlock(&inode->i_lock); | |
6264 | /* Mark the bad layout state as invalid, then | |
6265 | * retry using the open stateid. */ | |
6266 | pnfs_free_lseg_list(&head); | |
b1f69b75 AA |
6267 | } |
6268 | } | |
ee314c2a TM |
6269 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
6270 | rpc_restart_call_prepare(task); | |
6271 | out: | |
b1f69b75 AA |
6272 | dprintk("<-- %s\n", __func__); |
6273 | } | |
6274 | ||
8554116e IK |
6275 | static size_t max_response_pages(struct nfs_server *server) |
6276 | { | |
6277 | u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; | |
6278 | return nfs_page_array_len(0, max_resp_sz); | |
6279 | } | |
6280 | ||
6281 | static void nfs4_free_pages(struct page **pages, size_t size) | |
6282 | { | |
6283 | int i; | |
6284 | ||
6285 | if (!pages) | |
6286 | return; | |
6287 | ||
6288 | for (i = 0; i < size; i++) { | |
6289 | if (!pages[i]) | |
6290 | break; | |
6291 | __free_page(pages[i]); | |
6292 | } | |
6293 | kfree(pages); | |
6294 | } | |
6295 | ||
6296 | static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags) | |
6297 | { | |
6298 | struct page **pages; | |
6299 | int i; | |
6300 | ||
6301 | pages = kcalloc(size, sizeof(struct page *), gfp_flags); | |
6302 | if (!pages) { | |
6303 | dprintk("%s: can't alloc array of %zu pages\n", __func__, size); | |
6304 | return NULL; | |
6305 | } | |
6306 | ||
6307 | for (i = 0; i < size; i++) { | |
6308 | pages[i] = alloc_page(gfp_flags); | |
6309 | if (!pages[i]) { | |
6310 | dprintk("%s: failed to allocate page\n", __func__); | |
6311 | nfs4_free_pages(pages, size); | |
6312 | return NULL; | |
6313 | } | |
6314 | } | |
6315 | ||
6316 | return pages; | |
6317 | } | |
6318 | ||
b1f69b75 AA |
6319 | static void nfs4_layoutget_release(void *calldata) |
6320 | { | |
6321 | struct nfs4_layoutget *lgp = calldata; | |
a47970ff WAA |
6322 | struct inode *inode = lgp->args.inode; |
6323 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 6324 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
6325 | |
6326 | dprintk("--> %s\n", __func__); | |
8554116e | 6327 | nfs4_free_pages(lgp->args.layout.pages, max_pages); |
a47970ff | 6328 | pnfs_put_layout_hdr(NFS_I(inode)->layout); |
b1f69b75 AA |
6329 | put_nfs_open_context(lgp->args.ctx); |
6330 | kfree(calldata); | |
6331 | dprintk("<-- %s\n", __func__); | |
6332 | } | |
6333 | ||
6334 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
6335 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
6336 | .rpc_call_done = nfs4_layoutget_done, | |
6337 | .rpc_release = nfs4_layoutget_release, | |
6338 | }; | |
6339 | ||
a0b0a6e3 TM |
6340 | struct pnfs_layout_segment * |
6341 | nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags) | |
b1f69b75 | 6342 | { |
a47970ff WAA |
6343 | struct inode *inode = lgp->args.inode; |
6344 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 6345 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
6346 | struct rpc_task *task; |
6347 | struct rpc_message msg = { | |
6348 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
6349 | .rpc_argp = &lgp->args, | |
6350 | .rpc_resp = &lgp->res, | |
6351 | }; | |
6352 | struct rpc_task_setup task_setup_data = { | |
6353 | .rpc_client = server->client, | |
6354 | .rpc_message = &msg, | |
6355 | .callback_ops = &nfs4_layoutget_call_ops, | |
6356 | .callback_data = lgp, | |
6357 | .flags = RPC_TASK_ASYNC, | |
6358 | }; | |
a0b0a6e3 | 6359 | struct pnfs_layout_segment *lseg = NULL; |
b1f69b75 AA |
6360 | int status = 0; |
6361 | ||
6362 | dprintk("--> %s\n", __func__); | |
6363 | ||
8554116e IK |
6364 | lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags); |
6365 | if (!lgp->args.layout.pages) { | |
6366 | nfs4_layoutget_release(lgp); | |
a0b0a6e3 | 6367 | return ERR_PTR(-ENOMEM); |
8554116e IK |
6368 | } |
6369 | lgp->args.layout.pglen = max_pages * PAGE_SIZE; | |
30005121 | 6370 | lgp->args.timestamp = jiffies; |
8554116e | 6371 | |
35124a09 | 6372 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 6373 | lgp->res.seq_res.sr_slot = NULL; |
9d12b216 | 6374 | nfs41_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
a47970ff WAA |
6375 | |
6376 | /* nfs4_layoutget_release calls pnfs_put_layout_hdr */ | |
6377 | pnfs_get_layout_hdr(NFS_I(inode)->layout); | |
6378 | ||
b1f69b75 AA |
6379 | task = rpc_run_task(&task_setup_data); |
6380 | if (IS_ERR(task)) | |
a0b0a6e3 | 6381 | return ERR_CAST(task); |
b1f69b75 | 6382 | status = nfs4_wait_for_completion_rpc_task(task); |
c31663d4 FI |
6383 | if (status == 0) |
6384 | status = task->tk_status; | |
085b7a45 WAA |
6385 | /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */ |
6386 | if (status == 0 && lgp->res.layoutp->len) | |
a0b0a6e3 | 6387 | lseg = pnfs_layout_process(lgp); |
b1f69b75 AA |
6388 | rpc_put_task(task); |
6389 | dprintk("<-- %s status=%d\n", __func__, status); | |
a0b0a6e3 TM |
6390 | if (status) |
6391 | return ERR_PTR(status); | |
6392 | return lseg; | |
b1f69b75 AA |
6393 | } |
6394 | ||
cbe82603 BH |
6395 | static void |
6396 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
6397 | { | |
6398 | struct nfs4_layoutreturn *lrp = calldata; | |
6399 | ||
6400 | dprintk("--> %s\n", __func__); | |
d9afbd1b TM |
6401 | nfs41_setup_sequence(lrp->clp->cl_session, |
6402 | &lrp->args.seq_args, | |
6403 | &lrp->res.seq_res, | |
6404 | task); | |
cbe82603 BH |
6405 | } |
6406 | ||
6407 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
6408 | { | |
6409 | struct nfs4_layoutreturn *lrp = calldata; | |
6410 | struct nfs_server *server; | |
6411 | ||
6412 | dprintk("--> %s\n", __func__); | |
6413 | ||
6ba7db34 | 6414 | if (!nfs41_sequence_done(task, &lrp->res.seq_res)) |
cbe82603 BH |
6415 | return; |
6416 | ||
6417 | server = NFS_SERVER(lrp->args.inode); | |
6418 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 6419 | rpc_restart_call_prepare(task); |
cbe82603 BH |
6420 | return; |
6421 | } | |
cbe82603 BH |
6422 | dprintk("<-- %s\n", __func__); |
6423 | } | |
6424 | ||
6425 | static void nfs4_layoutreturn_release(void *calldata) | |
6426 | { | |
6427 | struct nfs4_layoutreturn *lrp = calldata; | |
849b286f | 6428 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
6429 | |
6430 | dprintk("--> %s\n", __func__); | |
849b286f TM |
6431 | spin_lock(&lo->plh_inode->i_lock); |
6432 | if (lrp->res.lrs_present) | |
6433 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); | |
6434 | lo->plh_block_lgets--; | |
6435 | spin_unlock(&lo->plh_inode->i_lock); | |
70c3bd2b | 6436 | pnfs_put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
6437 | kfree(calldata); |
6438 | dprintk("<-- %s\n", __func__); | |
6439 | } | |
6440 | ||
6441 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
6442 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
6443 | .rpc_call_done = nfs4_layoutreturn_done, | |
6444 | .rpc_release = nfs4_layoutreturn_release, | |
6445 | }; | |
6446 | ||
6447 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
6448 | { | |
6449 | struct rpc_task *task; | |
6450 | struct rpc_message msg = { | |
6451 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
6452 | .rpc_argp = &lrp->args, | |
6453 | .rpc_resp = &lrp->res, | |
6454 | }; | |
6455 | struct rpc_task_setup task_setup_data = { | |
6456 | .rpc_client = lrp->clp->cl_rpcclient, | |
6457 | .rpc_message = &msg, | |
6458 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
6459 | .callback_data = lrp, | |
6460 | }; | |
6461 | int status; | |
6462 | ||
6463 | dprintk("--> %s\n", __func__); | |
9d12b216 | 6464 | nfs41_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
6465 | task = rpc_run_task(&task_setup_data); |
6466 | if (IS_ERR(task)) | |
6467 | return PTR_ERR(task); | |
6468 | status = task->tk_status; | |
6469 | dprintk("<-- %s status=%d\n", __func__, status); | |
6470 | rpc_put_task(task); | |
6471 | return status; | |
6472 | } | |
6473 | ||
7f11d8d3 AA |
6474 | /* |
6475 | * Retrieve the list of Data Server devices from the MDS. | |
6476 | */ | |
6477 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
6478 | const struct nfs_fh *fh, | |
6479 | struct pnfs_devicelist *devlist) | |
6480 | { | |
6481 | struct nfs4_getdevicelist_args args = { | |
6482 | .fh = fh, | |
6483 | .layoutclass = server->pnfs_curr_ld->id, | |
6484 | }; | |
6485 | struct nfs4_getdevicelist_res res = { | |
6486 | .devlist = devlist, | |
6487 | }; | |
6488 | struct rpc_message msg = { | |
6489 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
6490 | .rpc_argp = &args, | |
6491 | .rpc_resp = &res, | |
6492 | }; | |
6493 | int status; | |
6494 | ||
6495 | dprintk("--> %s\n", __func__); | |
6496 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
6497 | &res.seq_res, 0); | |
6498 | dprintk("<-- %s status=%d\n", __func__, status); | |
6499 | return status; | |
6500 | } | |
6501 | ||
6502 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
6503 | const struct nfs_fh *fh, | |
6504 | struct pnfs_devicelist *devlist) | |
6505 | { | |
6506 | struct nfs4_exception exception = { }; | |
6507 | int err; | |
6508 | ||
6509 | do { | |
6510 | err = nfs4_handle_exception(server, | |
6511 | _nfs4_getdevicelist(server, fh, devlist), | |
6512 | &exception); | |
6513 | } while (exception.retry); | |
6514 | ||
6515 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
6516 | err, devlist->num_devs); | |
6517 | ||
6518 | return err; | |
6519 | } | |
6520 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
6521 | ||
b1f69b75 AA |
6522 | static int |
6523 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6524 | { | |
6525 | struct nfs4_getdeviceinfo_args args = { | |
6526 | .pdev = pdev, | |
6527 | }; | |
6528 | struct nfs4_getdeviceinfo_res res = { | |
6529 | .pdev = pdev, | |
6530 | }; | |
6531 | struct rpc_message msg = { | |
6532 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
6533 | .rpc_argp = &args, | |
6534 | .rpc_resp = &res, | |
6535 | }; | |
6536 | int status; | |
6537 | ||
6538 | dprintk("--> %s\n", __func__); | |
7c513058 | 6539 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
6540 | dprintk("<-- %s status=%d\n", __func__, status); |
6541 | ||
6542 | return status; | |
6543 | } | |
6544 | ||
6545 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6546 | { | |
6547 | struct nfs4_exception exception = { }; | |
6548 | int err; | |
6549 | ||
6550 | do { | |
6551 | err = nfs4_handle_exception(server, | |
6552 | _nfs4_proc_getdeviceinfo(server, pdev), | |
6553 | &exception); | |
6554 | } while (exception.retry); | |
6555 | return err; | |
6556 | } | |
6557 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
6558 | ||
863a3c6c AA |
6559 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
6560 | { | |
6561 | struct nfs4_layoutcommit_data *data = calldata; | |
6562 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6ba7db34 | 6563 | struct nfs4_session *session = nfs4_get_session(server); |
863a3c6c | 6564 | |
d9afbd1b TM |
6565 | nfs41_setup_sequence(session, |
6566 | &data->args.seq_args, | |
6567 | &data->res.seq_res, | |
6568 | task); | |
863a3c6c AA |
6569 | } |
6570 | ||
6571 | static void | |
6572 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
6573 | { | |
6574 | struct nfs4_layoutcommit_data *data = calldata; | |
6575 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6576 | ||
6ba7db34 | 6577 | if (!nfs41_sequence_done(task, &data->res.seq_res)) |
863a3c6c AA |
6578 | return; |
6579 | ||
6580 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
6581 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
6582 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
6583 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
6584 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 6585 | task->tk_status = 0; |
e59d27e0 TM |
6586 | break; |
6587 | case 0: | |
863a3c6c AA |
6588 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
6589 | data->res.fattr); | |
e59d27e0 TM |
6590 | break; |
6591 | default: | |
6592 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
6593 | rpc_restart_call_prepare(task); | |
6594 | return; | |
6595 | } | |
6596 | } | |
863a3c6c AA |
6597 | } |
6598 | ||
6599 | static void nfs4_layoutcommit_release(void *calldata) | |
6600 | { | |
6601 | struct nfs4_layoutcommit_data *data = calldata; | |
6602 | ||
db29c089 | 6603 | pnfs_cleanup_layoutcommit(data); |
863a3c6c AA |
6604 | put_rpccred(data->cred); |
6605 | kfree(data); | |
6606 | } | |
6607 | ||
6608 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
6609 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
6610 | .rpc_call_done = nfs4_layoutcommit_done, | |
6611 | .rpc_release = nfs4_layoutcommit_release, | |
6612 | }; | |
6613 | ||
6614 | int | |
ef311537 | 6615 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
6616 | { |
6617 | struct rpc_message msg = { | |
6618 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
6619 | .rpc_argp = &data->args, | |
6620 | .rpc_resp = &data->res, | |
6621 | .rpc_cred = data->cred, | |
6622 | }; | |
6623 | struct rpc_task_setup task_setup_data = { | |
6624 | .task = &data->task, | |
6625 | .rpc_client = NFS_CLIENT(data->args.inode), | |
6626 | .rpc_message = &msg, | |
6627 | .callback_ops = &nfs4_layoutcommit_ops, | |
6628 | .callback_data = data, | |
6629 | .flags = RPC_TASK_ASYNC, | |
6630 | }; | |
6631 | struct rpc_task *task; | |
6632 | int status = 0; | |
6633 | ||
6634 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
6635 | "lbw: %llu inode %lu\n", | |
6636 | data->task.tk_pid, sync, | |
6637 | data->args.lastbytewritten, | |
6638 | data->args.inode->i_ino); | |
6639 | ||
9d12b216 | 6640 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
6641 | task = rpc_run_task(&task_setup_data); |
6642 | if (IS_ERR(task)) | |
6643 | return PTR_ERR(task); | |
ef311537 | 6644 | if (sync == false) |
863a3c6c AA |
6645 | goto out; |
6646 | status = nfs4_wait_for_completion_rpc_task(task); | |
6647 | if (status != 0) | |
6648 | goto out; | |
6649 | status = task->tk_status; | |
6650 | out: | |
6651 | dprintk("%s: status %d\n", __func__, status); | |
6652 | rpc_put_task(task); | |
6653 | return status; | |
6654 | } | |
fca78d6d BS |
6655 | |
6656 | static int | |
6657 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6658 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6659 | { | |
6660 | struct nfs41_secinfo_no_name_args args = { | |
6661 | .style = SECINFO_STYLE_CURRENT_FH, | |
6662 | }; | |
6663 | struct nfs4_secinfo_res res = { | |
6664 | .flavors = flavors, | |
6665 | }; | |
6666 | struct rpc_message msg = { | |
6667 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
6668 | .rpc_argp = &args, | |
6669 | .rpc_resp = &res, | |
6670 | }; | |
6671 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); | |
6672 | } | |
6673 | ||
6674 | static int | |
6675 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6676 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6677 | { | |
6678 | struct nfs4_exception exception = { }; | |
6679 | int err; | |
6680 | do { | |
6681 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6682 | switch (err) { | |
6683 | case 0: | |
6684 | case -NFS4ERR_WRONGSEC: | |
6685 | case -NFS4ERR_NOTSUPP: | |
05e9cfb4 | 6686 | goto out; |
fca78d6d BS |
6687 | default: |
6688 | err = nfs4_handle_exception(server, err, &exception); | |
6689 | } | |
6690 | } while (exception.retry); | |
05e9cfb4 | 6691 | out: |
fca78d6d BS |
6692 | return err; |
6693 | } | |
6694 | ||
6695 | static int | |
6696 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
6697 | struct nfs_fsinfo *info) | |
6698 | { | |
6699 | int err; | |
6700 | struct page *page; | |
6701 | rpc_authflavor_t flavor; | |
6702 | struct nfs4_secinfo_flavors *flavors; | |
6703 | ||
6704 | page = alloc_page(GFP_KERNEL); | |
6705 | if (!page) { | |
6706 | err = -ENOMEM; | |
6707 | goto out; | |
6708 | } | |
6709 | ||
6710 | flavors = page_address(page); | |
6711 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6712 | ||
6713 | /* | |
6714 | * Fall back on "guess and check" method if | |
6715 | * the server doesn't support SECINFO_NO_NAME | |
6716 | */ | |
6717 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
6718 | err = nfs4_find_root_sec(server, fhandle, info); | |
6719 | goto out_freepage; | |
6720 | } | |
6721 | if (err) | |
6722 | goto out_freepage; | |
6723 | ||
6724 | flavor = nfs_find_best_sec(flavors); | |
6725 | if (err == 0) | |
6726 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
6727 | ||
6728 | out_freepage: | |
6729 | put_page(page); | |
6730 | if (err == -EACCES) | |
6731 | return -EPERM; | |
6732 | out: | |
6733 | return err; | |
6734 | } | |
1cab0652 BS |
6735 | |
6736 | static int _nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) | |
7d974794 BS |
6737 | { |
6738 | int status; | |
6739 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 6740 | .stateid = stateid, |
7d974794 BS |
6741 | }; |
6742 | struct nfs41_test_stateid_res res; | |
6743 | struct rpc_message msg = { | |
6744 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
6745 | .rpc_argp = &args, | |
6746 | .rpc_resp = &res, | |
6747 | }; | |
1cab0652 | 6748 | |
38527b15 | 6749 | dprintk("NFS call test_stateid %p\n", stateid); |
9d12b216 | 6750 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
8fe72bac TM |
6751 | nfs4_set_sequence_privileged(&args.seq_args); |
6752 | status = nfs4_call_sync_sequence(server->client, server, &msg, | |
6753 | &args.seq_args, &res.seq_res); | |
38527b15 CL |
6754 | if (status != NFS_OK) { |
6755 | dprintk("NFS reply test_stateid: failed, %d\n", status); | |
377e507d | 6756 | return status; |
38527b15 CL |
6757 | } |
6758 | dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status); | |
377e507d | 6759 | return -res.status; |
7d974794 BS |
6760 | } |
6761 | ||
38527b15 CL |
6762 | /** |
6763 | * nfs41_test_stateid - perform a TEST_STATEID operation | |
6764 | * | |
6765 | * @server: server / transport on which to perform the operation | |
6766 | * @stateid: state ID to test | |
6767 | * | |
6768 | * Returns NFS_OK if the server recognizes that "stateid" is valid. | |
6769 | * Otherwise a negative NFS4ERR value is returned if the operation | |
6770 | * failed or the state ID is not currently valid. | |
6771 | */ | |
1cab0652 | 6772 | static int nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
7d974794 BS |
6773 | { |
6774 | struct nfs4_exception exception = { }; | |
6775 | int err; | |
6776 | do { | |
377e507d CL |
6777 | err = _nfs41_test_stateid(server, stateid); |
6778 | if (err != -NFS4ERR_DELAY) | |
6779 | break; | |
6780 | nfs4_handle_exception(server, err, &exception); | |
7d974794 BS |
6781 | } while (exception.retry); |
6782 | return err; | |
6783 | } | |
9aeda35f | 6784 | |
7c1d5fae TM |
6785 | struct nfs_free_stateid_data { |
6786 | struct nfs_server *server; | |
6787 | struct nfs41_free_stateid_args args; | |
9aeda35f | 6788 | struct nfs41_free_stateid_res res; |
7c1d5fae TM |
6789 | }; |
6790 | ||
6791 | static void nfs41_free_stateid_prepare(struct rpc_task *task, void *calldata) | |
6792 | { | |
6793 | struct nfs_free_stateid_data *data = calldata; | |
6794 | nfs41_setup_sequence(nfs4_get_session(data->server), | |
6795 | &data->args.seq_args, | |
6796 | &data->res.seq_res, | |
6797 | task); | |
6798 | } | |
6799 | ||
6800 | static void nfs41_free_stateid_done(struct rpc_task *task, void *calldata) | |
6801 | { | |
6802 | struct nfs_free_stateid_data *data = calldata; | |
6803 | ||
6804 | nfs41_sequence_done(task, &data->res.seq_res); | |
6805 | ||
6806 | switch (task->tk_status) { | |
6807 | case -NFS4ERR_DELAY: | |
6808 | if (nfs4_async_handle_error(task, data->server, NULL) == -EAGAIN) | |
6809 | rpc_restart_call_prepare(task); | |
6810 | } | |
6811 | } | |
6812 | ||
6813 | static void nfs41_free_stateid_release(void *calldata) | |
6814 | { | |
6815 | kfree(calldata); | |
6816 | } | |
6817 | ||
6818 | const struct rpc_call_ops nfs41_free_stateid_ops = { | |
6819 | .rpc_call_prepare = nfs41_free_stateid_prepare, | |
6820 | .rpc_call_done = nfs41_free_stateid_done, | |
6821 | .rpc_release = nfs41_free_stateid_release, | |
6822 | }; | |
6823 | ||
6824 | static struct rpc_task *_nfs41_free_stateid(struct nfs_server *server, | |
6825 | nfs4_stateid *stateid, | |
6826 | bool privileged) | |
6827 | { | |
9aeda35f BS |
6828 | struct rpc_message msg = { |
6829 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
9aeda35f | 6830 | }; |
7c1d5fae TM |
6831 | struct rpc_task_setup task_setup = { |
6832 | .rpc_client = server->client, | |
6833 | .rpc_message = &msg, | |
6834 | .callback_ops = &nfs41_free_stateid_ops, | |
6835 | .flags = RPC_TASK_ASYNC, | |
6836 | }; | |
6837 | struct nfs_free_stateid_data *data; | |
9aeda35f | 6838 | |
38527b15 | 6839 | dprintk("NFS call free_stateid %p\n", stateid); |
7c1d5fae TM |
6840 | data = kmalloc(sizeof(*data), GFP_NOFS); |
6841 | if (!data) | |
6842 | return ERR_PTR(-ENOMEM); | |
6843 | data->server = server; | |
6844 | nfs4_stateid_copy(&data->args.stateid, stateid); | |
6845 | ||
6846 | task_setup.callback_data = data; | |
6847 | ||
6848 | msg.rpc_argp = &data->args; | |
6849 | msg.rpc_resp = &data->res; | |
6850 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); | |
6851 | if (privileged) | |
6852 | nfs4_set_sequence_privileged(&data->args.seq_args); | |
6853 | ||
6854 | return rpc_run_task(&task_setup); | |
9aeda35f BS |
6855 | } |
6856 | ||
38527b15 CL |
6857 | /** |
6858 | * nfs41_free_stateid - perform a FREE_STATEID operation | |
6859 | * | |
6860 | * @server: server / transport on which to perform the operation | |
6861 | * @stateid: state ID to release | |
6862 | * | |
6863 | * Returns NFS_OK if the server freed "stateid". Otherwise a | |
6864 | * negative NFS4ERR value is returned. | |
6865 | */ | |
1cab0652 | 6866 | static int nfs41_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f | 6867 | { |
7c1d5fae TM |
6868 | struct rpc_task *task; |
6869 | int ret; | |
6870 | ||
6871 | task = _nfs41_free_stateid(server, stateid, true); | |
6872 | if (IS_ERR(task)) | |
6873 | return PTR_ERR(task); | |
6874 | ret = rpc_wait_for_completion_task(task); | |
6875 | if (!ret) | |
6876 | ret = task->tk_status; | |
6877 | rpc_put_task(task); | |
6878 | return ret; | |
9aeda35f | 6879 | } |
36281caa | 6880 | |
c8b2d0bf TM |
6881 | static int nfs41_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp) |
6882 | { | |
6883 | struct rpc_task *task; | |
6884 | ||
6885 | task = _nfs41_free_stateid(server, &lsp->ls_stateid, false); | |
6886 | nfs4_free_lock_state(server, lsp); | |
6887 | if (IS_ERR(task)) | |
6888 | return PTR_ERR(task); | |
6889 | rpc_put_task(task); | |
6890 | return 0; | |
6891 | } | |
6892 | ||
36281caa TM |
6893 | static bool nfs41_match_stateid(const nfs4_stateid *s1, |
6894 | const nfs4_stateid *s2) | |
6895 | { | |
2d2f24ad | 6896 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
6897 | return false; |
6898 | ||
2d2f24ad | 6899 | if (s1->seqid == s2->seqid) |
36281caa | 6900 | return true; |
2d2f24ad | 6901 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
6902 | return true; |
6903 | ||
6904 | return false; | |
6905 | } | |
6906 | ||
557134a3 AA |
6907 | #endif /* CONFIG_NFS_V4_1 */ |
6908 | ||
36281caa TM |
6909 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
6910 | const nfs4_stateid *s2) | |
6911 | { | |
f597c537 | 6912 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
6913 | } |
6914 | ||
6915 | ||
17280175 | 6916 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 6917 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 6918 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
6919 | .recover_open = nfs4_open_reclaim, |
6920 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 6921 | .establish_clid = nfs4_init_clientid, |
90a16617 | 6922 | .get_clid_cred = nfs4_get_setclientid_cred, |
05f4c350 | 6923 | .detect_trunking = nfs40_discover_server_trunking, |
1da177e4 LT |
6924 | }; |
6925 | ||
591d71cb | 6926 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 6927 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
6928 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
6929 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
6930 | .recover_open = nfs4_open_reclaim, | |
6931 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 6932 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6933 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 6934 | .reclaim_complete = nfs41_proc_reclaim_complete, |
05f4c350 | 6935 | .detect_trunking = nfs41_discover_server_trunking, |
591d71cb AA |
6936 | }; |
6937 | #endif /* CONFIG_NFS_V4_1 */ | |
6938 | ||
17280175 | 6939 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
6940 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
6941 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
6942 | .recover_open = nfs4_open_expired, | |
6943 | .recover_lock = nfs4_lock_expired, | |
6944 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 6945 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
6946 | }; |
6947 | ||
6948 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 6949 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 6950 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 6951 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
6952 | .recover_open = nfs41_open_expired, |
6953 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 6954 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6955 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 6956 | }; |
591d71cb | 6957 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 6958 | |
17280175 | 6959 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 6960 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 6961 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 6962 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
6963 | }; |
6964 | ||
6965 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 6966 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 6967 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 6968 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 6969 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
6970 | }; |
6971 | #endif | |
6972 | ||
97dc1359 TM |
6973 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
6974 | .minor_version = 0, | |
39c6daae TM |
6975 | .init_caps = NFS_CAP_READDIRPLUS |
6976 | | NFS_CAP_ATOMIC_OPEN | |
6977 | | NFS_CAP_CHANGE_ATTR | |
6978 | | NFS_CAP_POSIX_LOCK, | |
97dc1359 | 6979 | .call_sync = _nfs4_call_sync, |
36281caa | 6980 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 6981 | .find_root_sec = nfs4_find_root_sec, |
c8b2d0bf | 6982 | .free_lock_state = nfs4_release_lockowner, |
c48f4f35 TM |
6983 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
6984 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
6985 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
6986 | }; |
6987 | ||
6988 | #if defined(CONFIG_NFS_V4_1) | |
6989 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
6990 | .minor_version = 1, | |
39c6daae TM |
6991 | .init_caps = NFS_CAP_READDIRPLUS |
6992 | | NFS_CAP_ATOMIC_OPEN | |
6993 | | NFS_CAP_CHANGE_ATTR | |
3b66486c | 6994 | | NFS_CAP_POSIX_LOCK |
49f9a0fa TM |
6995 | | NFS_CAP_STATEID_NFSV41 |
6996 | | NFS_CAP_ATOMIC_OPEN_V1, | |
104287cd | 6997 | .call_sync = nfs4_call_sync_sequence, |
36281caa | 6998 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 6999 | .find_root_sec = nfs41_find_root_sec, |
c8b2d0bf | 7000 | .free_lock_state = nfs41_free_lock_state, |
c48f4f35 TM |
7001 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
7002 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
7003 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
7004 | }; |
7005 | #endif | |
7006 | ||
97dc1359 TM |
7007 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
7008 | [0] = &nfs_v4_0_minor_ops, | |
7009 | #if defined(CONFIG_NFS_V4_1) | |
7010 | [1] = &nfs_v4_1_minor_ops, | |
7011 | #endif | |
7012 | }; | |
7013 | ||
73a79706 BS |
7014 | const struct inode_operations nfs4_dir_inode_operations = { |
7015 | .create = nfs_create, | |
7016 | .lookup = nfs_lookup, | |
7017 | .atomic_open = nfs_atomic_open, | |
7018 | .link = nfs_link, | |
7019 | .unlink = nfs_unlink, | |
7020 | .symlink = nfs_symlink, | |
7021 | .mkdir = nfs_mkdir, | |
7022 | .rmdir = nfs_rmdir, | |
7023 | .mknod = nfs_mknod, | |
7024 | .rename = nfs_rename, | |
7025 | .permission = nfs_permission, | |
7026 | .getattr = nfs_getattr, | |
7027 | .setattr = nfs_setattr, | |
7028 | .getxattr = generic_getxattr, | |
7029 | .setxattr = generic_setxattr, | |
7030 | .listxattr = generic_listxattr, | |
7031 | .removexattr = generic_removexattr, | |
7032 | }; | |
7033 | ||
92e1d5be | 7034 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
7035 | .permission = nfs_permission, |
7036 | .getattr = nfs_getattr, | |
7037 | .setattr = nfs_setattr, | |
64c2ce8b AK |
7038 | .getxattr = generic_getxattr, |
7039 | .setxattr = generic_setxattr, | |
7040 | .listxattr = generic_listxattr, | |
7041 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
7042 | }; |
7043 | ||
509de811 | 7044 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
7045 | .version = 4, /* protocol version */ |
7046 | .dentry_ops = &nfs4_dentry_operations, | |
7047 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 7048 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 7049 | .file_ops = &nfs4_file_operations, |
1da177e4 | 7050 | .getroot = nfs4_proc_get_root, |
281cad46 | 7051 | .submount = nfs4_submount, |
ff9099f2 | 7052 | .try_mount = nfs4_try_mount, |
1da177e4 LT |
7053 | .getattr = nfs4_proc_getattr, |
7054 | .setattr = nfs4_proc_setattr, | |
7055 | .lookup = nfs4_proc_lookup, | |
7056 | .access = nfs4_proc_access, | |
7057 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
7058 | .create = nfs4_proc_create, |
7059 | .remove = nfs4_proc_remove, | |
7060 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 7061 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 LT |
7062 | .unlink_done = nfs4_proc_unlink_done, |
7063 | .rename = nfs4_proc_rename, | |
d3d4152a | 7064 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 7065 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 7066 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
7067 | .link = nfs4_proc_link, |
7068 | .symlink = nfs4_proc_symlink, | |
7069 | .mkdir = nfs4_proc_mkdir, | |
7070 | .rmdir = nfs4_proc_remove, | |
7071 | .readdir = nfs4_proc_readdir, | |
7072 | .mknod = nfs4_proc_mknod, | |
7073 | .statfs = nfs4_proc_statfs, | |
7074 | .fsinfo = nfs4_proc_fsinfo, | |
7075 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 7076 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
7077 | .decode_dirent = nfs4_decode_dirent, |
7078 | .read_setup = nfs4_proc_read_setup, | |
1abb5088 | 7079 | .read_pageio_init = pnfs_pageio_init_read, |
ea7c3303 | 7080 | .read_rpc_prepare = nfs4_proc_read_rpc_prepare, |
ec06c096 | 7081 | .read_done = nfs4_read_done, |
1da177e4 | 7082 | .write_setup = nfs4_proc_write_setup, |
57208fa7 | 7083 | .write_pageio_init = pnfs_pageio_init_write, |
c6cb80d0 | 7084 | .write_rpc_prepare = nfs4_proc_write_rpc_prepare, |
788e7a89 | 7085 | .write_done = nfs4_write_done, |
1da177e4 | 7086 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 7087 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 7088 | .commit_done = nfs4_commit_done, |
1da177e4 | 7089 | .lock = nfs4_proc_lock, |
e50a1c2e | 7090 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 7091 | .close_context = nfs4_close_context, |
2b484297 | 7092 | .open_context = nfs4_atomic_open, |
011e2a7f | 7093 | .have_delegation = nfs4_have_delegation, |
57ec14c5 | 7094 | .return_delegation = nfs4_inode_return_delegation, |
6663ee7f | 7095 | .alloc_client = nfs4_alloc_client, |
45a52a02 | 7096 | .init_client = nfs4_init_client, |
cdb7eced | 7097 | .free_client = nfs4_free_client, |
1179acc6 BS |
7098 | .create_server = nfs4_create_server, |
7099 | .clone_server = nfs_clone_server, | |
1da177e4 LT |
7100 | }; |
7101 | ||
64c2ce8b AK |
7102 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
7103 | .prefix = XATTR_NAME_NFSV4_ACL, | |
7104 | .list = nfs4_xattr_list_nfs4_acl, | |
7105 | .get = nfs4_xattr_get_nfs4_acl, | |
7106 | .set = nfs4_xattr_set_nfs4_acl, | |
7107 | }; | |
7108 | ||
7109 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
7110 | &nfs4_xattr_nfs4_acl_handler, | |
7111 | NULL | |
7112 | }; | |
7113 | ||
1da177e4 LT |
7114 | /* |
7115 | * Local variables: | |
7116 | * c-basic-offset: 8 | |
7117 | * End: | |
7118 | */ |